阅读说明：本技术 波束训练方法、网络设备、终端、系统和存储介质 (Beam training method, network device, terminal, system and storage medium ) 是由 李萍 王建利 孙振喆 于泳 陆涛 黄静月 蔡荣荣 于 2020-06-11 设计创作，主要内容包括：本发明公开一种波束训练方法、网络设备、终端、系统和存储介质,属于通信技术领域。该方法包括：将K-(1)个问询波束分为Q-(1)组,在每一个波束训练周期对应的工作波束下发时间内的时频资源位置,利用工作波束集合中的工作波束发送导频信息；在每一个波束训练周期对应的问询波束下发时间内的时频资源位置,利用任一组问询波束组中的问询波束发送导频信息。本发明在不同的波束训练周期中,问询波束是分组下发的,因此减少了每个训练周期内下发的时频资源位置的数量,从而利用较少的时频资源位置训练了更多的波束,提高了波束训练效率,降低了系统开销。(The invention discloses a beam training method, network equipment, a terminal, a system and a storage medium, and belongs to the technical field of communication. The method comprises the following steps: will K 1 Each query beam being divided into Q 1 The group is used for sending pilot frequency information by utilizing the working wave beams in the working wave beam set at the time frequency resource position in the working wave beam sending time corresponding to each wave beam training period; and at the time-frequency resource position within the inquiry beam issuing time corresponding to each beam training period, sending pilot frequency information by using the inquiry beams in any inquiry beam group. The invention sends the inquiry wave beam in groups in different wave beam training periods, thereby reducing the time frequency resource sent in each training periodThe number of the positions is reduced, so that more beams are trained by using fewer time-frequency resource positions, the beam training efficiency is improved, and the system overhead is reduced.)

1. A method of beam training, comprising:

acquiring a working beam set and an inquiry beam set; wherein the working beam set comprises at least one working beam and the query beam set comprises K₁A query beam, said K₁The query beam is divided into Q₁Group query beam group, K₁And Q₁Are all positive integers greater than or equal to 2;

using Q₁Sending pilot frequency information at a time-frequency resource position in each wave beam training period so as to train the working wave beam set and the inquiry wave beam set;

the beam training period comprises working beam issuing time and inquiry beam issuing time;

said utilization Q₁The time frequency resource position in each wave beam training period sends down pilot frequency information, which comprises the following steps:

for each beam training period, sending pilot frequency information by using the working beam in the working beam set at the time-frequency resource position within the working beam sending time corresponding to each beam training period;

and transmitting pilot frequency information by using the inquiry wave beams in any inquiry wave beam group at the time frequency resource position in the inquiry wave beam issuing time corresponding to each wave beam training period.

2. The method of claim 1, wherein the sending pilot information by using the query beams in any one of the query beam groups at the time-frequency resource location within the query beam sending time corresponding to each of the beam training periods comprises:

at the time-frequency resource position in the inquiry wave beam sending time corresponding to each wave beam training period, the inquiry wave beams in any inquiry wave beam group are utilized to send pilot frequency information, so that Q is ensured₁Group query beam groups in correspondence with Q₁The training is completed within one beam training period.

3. The beam training method according to claim 1 or 2, further comprising:

and informing the terminal of the quantity of pilot frequency information issued in each beam training period so that the terminal can receive the working beam and the inquiry beam according to the quantity of the pilot frequency information.

4. The beam training method of claim 3, further comprising:

receiving the signal quality of the working beam and the inquiry beam fed back by the terminal;

determining an optimal set of beam pairs based on the signal quality of the working beam and the query beam.

5. The beam training method of claim 4, after determining the optimal set of beam pairs, further comprising:

comparing the signal quality of the working beam with the signal quality of the interrogating beam in the set of optimal beam pairs;

and updating the working beam set and the inquiry beam set according to the comparison result.

6. The method of claim 5, wherein the updating the working set of beams and the query set of beams according to the comparison comprises:

judging whether the difference value between the signal quality of the query wave beam and the signal quality of the working wave beam in the optimal wave beam pair set is larger than a first threshold value or not;

and if so, deleting the query beam from the query beam set, and adding the query beam as a working beam into the working beam set.

7. The beam training method of claim 6, wherein the set of working beams and the set of query beams are updated according to the comparison result, further comprising:

judging whether the difference value between the signal quality of the working beam and the signal quality of the inquiry beam in the optimal beam pair set is smaller than a second threshold value or not;

and if so, deleting the working beam from the working beam set, and adding the working beam as a query beam into the query beam set.

8. The beam training method of claim 4, further comprising:

updating the working beam set and the query beam set according to the proportion that the optimal beam in the optimal beam pair set fed back by the terminal is the query beam;

alternatively, the first and second electrodes may be,

and updating the working beam set and the inquiry beam set according to the attribute parameters of the terminal.

9. The beam training method of claim 1, further comprising:

updating the beam width of the working beam or the beam width of the query beam or the grouping mode of the query beam set, and executing the following steps:

obtaining an updated set of working beams and an updated set of query beamsCombining; the updated working beam set comprises at least one working beam, and the updated query beam set comprises K₂A query beam, said K₂Each query beam being divided into Q₂Group query beam group, K₂And Q₂Are all positive integers greater than or equal to 2;

using Q₂Sending pilot frequency information at a time-frequency resource position in each wave beam training period so as to train the updated working wave beam set and the updated inquiry wave beam set;

the beam training period comprises working beam issuing time and inquiry beam issuing time;

said utilization Q₂The time frequency resource position in each wave beam training period sends down pilot frequency information, which comprises the following steps:

for each beam training period, sending pilot frequency information by using the working beam in the updated working beam set at the time-frequency resource position within the working beam sending time corresponding to each beam training period;

and at the time-frequency resource position within the inquiry beam issuing time corresponding to each beam training period, sending pilot frequency information by using the inquiry beam in any updated inquiry beam group.

10. A method of beam training, comprising:

at Q₁Receiving a plurality of pilot frequency information from network equipment at a time-frequency resource position in a beam training period; a plurality of said pilot information including at least one operating beam pilot information and K₁Query beam pilot information; wherein the pilot information of the working beam is that the network equipment utilizes the working beam at Q₁Q within one beam training period₁Pilot frequency information sent by down sending time of each working beam, wherein the inquiry beam pilot frequency information is that the network equipment utilizes any one inquiry beam group to be in Q₁Q within one beam training period₁Pilot frequency information sent by the sending time of each inquiry wave beam; k₁And Q₁Are all positive integers greater than or equal to 2;

detecting signal quality of a plurality of said pilot information;

and feeding back the signal quality of the beams corresponding to the plurality of pilot frequency information to the network equipment.

11. The beam training method of claim 10, further comprising:

receiving the quantity of pilot frequency information issued in each wave beam training period from the network equipment;

said at Q₁Receiving a plurality of pilot information from the network device at a time-frequency resource location within a beam training period, including:

and receiving pilot frequency information corresponding to the pilot frequency information quantity at the time-frequency resource position in each wave beam training period.

12. A network device comprising a memory, a processor, and a program stored on the memory and executable on the processor, the program when executed by the processor implementing the steps of the beam training method of any one of claims 1 to 9.

13. A terminal comprising a memory, a processor and a program stored on the memory and executable on the processor, the program when executed by the processor implementing the steps of the beam training method of claim 10 or 11.

14. A beam training system comprising a network device for performing the steps of the beam training method of any one of claims 1 to 9 and a terminal for performing the steps of the beam training method of claim 10 or 11.

15. A storage medium for computer readable storage, the storage medium storing one or more programs, the one or more programs being executable by one or more processors to perform the steps of the beam training method of any one of claims 1 to 9 or the steps of the beam training method of claim 10 or 11.

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a beam training method, a network device, a terminal, a system, and a storage medium.

Background

The use of high carrier frequencies has received a great deal of attention from the communications industry in order to gain rich spectrum resources. Although the high carrier frequency can bring abundant spectrum resources, when a high-frequency signal propagates in a free space propagation path, the high-frequency signal has the disadvantages of large intensity loss, remarkable air absorption, serious rain attenuation influence and the like, and has a remarkable influence on the coverage distance of the high-frequency signal. To ensure good coverage of the target area, multiple beams need to be designed on both the base station side and the terminal side, and optimal beam pair communication between the base station side and the terminal side is obtained through beam training.

In the related communication technology, there are many methods for performing beam training, but the system overhead is large.

Disclosure of Invention

The embodiments of the present invention mainly aim to provide a beam training method, a network device, a terminal, a system, and a storage medium, which aim to train more beams using fewer time-frequency resource locations, improve beam training efficiency, and reduce system overhead.

In order to achieve the above object, an embodiment of the present invention provides a beam training method, including the following steps:

acquiring a working beam set and an inquiry beam set; wherein the working beam set comprises at least one working beam and the query beam set comprises K₁A query beam, said K₁The query beam is divided into Q₁A group query beam group;

using Q₁Sending pilot frequency information at a time-frequency resource position in each wave beam training period so as to train the working wave beam set and the inquiry wave beam set;

the beam training period comprises working beam issuing time and inquiry beam issuing time;

said utilization Q₁The time frequency resource position in each wave beam training period sends down pilot frequency information, which comprises the following steps:

for each beam training period, sending pilot frequency information by using the working beam in the working beam set at the time-frequency resource position within the working beam sending time corresponding to each beam training period;

and transmitting pilot frequency information by using the inquiry wave beams in any inquiry wave beam group at the time frequency resource position in the inquiry wave beam issuing time corresponding to each wave beam training period.

In order to achieve the above object, an embodiment of the present invention further provides a beam training method, where the method includes:

at Q₁Receiving a plurality of pilot frequency information from network equipment at a time-frequency resource position in a beam training period; a plurality of said pilot information including at least one operating beam pilot information and K₁Query beam pilot information; wherein the pilot information of the working beam is that the network equipment utilizes the working beam at Q₁Q within one beam training period₁Pilot frequency information sent by down sending time of each working beam, wherein the inquiry beam pilot frequency information is that the network equipment utilizes any one inquiry beam group to be in Q₁Q within one beam training period₁Pilot frequency information sent by the sending time of each inquiry wave beam;

detecting signal quality of a plurality of said pilot information;

and feeding back the signal quality of the beams corresponding to the plurality of pilot frequency information to the network equipment.

To achieve the above object, the present invention also provides a network device, which includes a memory, a processor, and a program stored on the memory and executable on the processor, wherein the program, when executed by the processor, implements the steps of the first beam training method as described above.

To achieve the above object, the present invention also provides a terminal including a memory, a processor, and a program stored on the memory and executable on the processor, the program implementing the steps of the second beam training method as described above when executed by the processor.

To achieve the above object, the present invention further provides a beam training system, which includes a network device and a terminal, wherein the network device is configured to perform the steps of the first beam training method, and the terminal is configured to perform the steps of the second beam training method.

To achieve the above object, the present invention also provides a storage medium for a computer-readable storage, the storage medium storing one or more programs, the one or more programs being executable by one or more processors to implement the steps of the aforementioned method.

According to the beam training method, the network equipment, the terminal, the system and the storage medium, the base station issues the working beams and the inquiry beams, and the inquiry beams are issued in groups in different beam training periods, so that the number of time-frequency resource positions issued in each training period (the number of the working beams plus the number of the inquiry beams in each group) is reduced, more beams are trained by using fewer time-frequency resource positions, the beam training efficiency is improved, and the system overhead is reduced.

Drawings

Fig. 1 is a beam configuration diagram of a network device and a terminal according to an embodiment of the present invention. Fig. 2 is a flowchart of a beam training method according to an embodiment of the first aspect of the present invention.

Fig. 3 is a block diagram of a beam training period in accordance with an embodiment of the present invention.

Fig. 4 is a flow chart of step S120 of the beam training method shown in fig. 2 in some embodiments.

Fig. 5 is a flowchart of a beam training method according to another embodiment of the first aspect of the present invention.

Fig. 6 is a flowchart of a beam training method according to another embodiment of the first aspect of the present invention.

Fig. 7 is a flowchart of a beam training method according to another embodiment of the first aspect of the present invention.

Fig. 8 is a flow chart of step S170 of the beam training method shown in fig. 7 in some embodiments.

Fig. 9 is a flow diagram of steps S140 and S150 of the beam training method shown in fig. 6 in some embodiments.

Fig. 10 is a flowchart of a beam training method according to another embodiment of the first aspect of the present invention.

Fig. 11 is a flowchart of a beam training method according to another embodiment of the first aspect of the present invention.

Fig. 12 is a flow chart of step S1110 of the beam training method shown in fig. 10 in some embodiments.

Fig. 13 is a block diagram of a total period of beam training in accordance with one embodiment of the present invention.

Fig. 14 is a flowchart of a beam training method according to an embodiment of the second aspect of the present invention.

Fig. 15 is a flowchart of a beam training method according to another embodiment of the second aspect of the present invention.

Detailed Description

It should be understood that the embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

Due to the diversification of services carried over 5G, the demand for spectrum resources is facilitated. From 5G to the future 6G, the use of high carrier frequencies has received a great deal of attention from the communications industry in order to obtain rich spectrum resources. Current potential high carrier frequencies include 28GHz, 39GHz, 60GHz, 70GHz, terahertz, and the like. Although the high frequency band brings more abundant spectrum resources, when the signal of the high frequency component is transmitted in a free space transmission path, the defects of large intensity loss, obvious air absorption, serious rain attenuation influence and the like exist, and the coverage distance and the scene of the high frequency signal in the actual use are all obviously influenced.

The large-scale antenna array well makes up the defect in a high-frequency communication system through high beam forming gain. In a high-frequency communication system, a large-scale antenna array and beam forming can be used for obtaining high antenna gain, and enough link coverage capacity is ensured. Massive MIMO beamforming has the advantage of providing large antenna gain in one direction, but the gain beams tend to be very narrow. Thus, multiple beams are a typical feature of high frequency communications.

To ensure good coverage of the target area, both the network device and the terminal need to design multiple beams. As shown in fig. 1, the network device 100 designs a plurality of beams 110 and the terminal 200 designs a plurality of beams 120. The optimal beam pair communication between the network device 100 and the terminal 200 is obtained through beam training. Therefore, a large amount of beam training results in a large system overhead. For example, in the related art, the beam training needs to sequentially transmit pilot information by using all beams to be trained in a beam training period, which is long in beam training period and large in system overhead. Therefore, how to reduce the system overhead in the beam training phase is a problem to be solved.

Based on the above, the invention provides a beam training method, a network device, a terminal, a system and a storage medium, which can reduce resources used for beam training, thereby improving beam training efficiency and reducing system overhead.

In a first aspect, as shown in fig. 2, an embodiment of the present invention provides a beam training method applied to a network device, where the method includes:

step S110: acquiring a working beam set and an inquiry beam set; the working beam set comprises at least one working beam, and the inquiry beam set comprises K₁Individual query beam, K₁The query beam is divided into Q₁The groups query the beam group.

In some embodiments, N beams covering the target area are acquired as a set of beams Z: { Z₁，Z₂，……，Z_N}. And selecting a beam set to be transmitted from the beam set Z to carry out beam training. The issued beam set comprises working beamsSet and query beam set, the working beam set is W: { W₁，W₂，……，W_MM working beams are totally obtained, and M is a positive integer greater than or equal to 2; query beam set is S:total K₁Individual query beam, K₁Is a positive integer greater than or equal to 2. Wherein W belongs to Z, S belongs to Z, W is U-S belongs to Z, M + K₁N is less than or equal to N. The working beam preferably covers the beam of the target area, while the interrogation beam may be determined by the working beam varying beamwidth and/or coverage distance.

In some embodiments, K₁Each query beam being divided into Q₁Groups of interrogating beams, each group having R₁An interrogation beam, R₁*Q₁＝K₁，Q₁Is a positive integer greater than or equal to 2.

The working beams in the working beam set are used for long-time communication of control channels and traffic channels between the network equipment and the terminal. The query beams in the set of query beams are used for beam discovery during beam training and may be used for short-time communication of control channels and traffic channels between the network device and the terminal.

In some embodiments, the network device is a base station, and may also be other network devices that can implement the functions of the base station.

Step S120: using Q₁And transmitting pilot frequency information at the time-frequency resource position in each wave beam training period so as to train the working wave beam set and the inquiry wave beam set.

In some embodiments, as shown in fig. 3, beam training periods T are set, each beam training period T including a working beam launch time at which pilot information is transmitted using the working beam and a query beam launch time at which pilot information is transmitted using the query beam. Wherein, the pilot frequency information is the known information defined by the network equipment and the terminal protocol.

Due to the time-frequency resource position of the working beam (the time-frequency resource position is placed by the pilot frequency information in the frame structure)Time position) and the working beam are mapped one-to-one, that is, one time frequency resource position maps one working beam and the working beam number, so that the working beam issuing time in each beam training period has M issued time frequency resource positions; the time frequency resource position of the inquiry wave beam and the inquiry wave beam are mapped in a one-to-many way, namely, one time frequency resource position maps a plurality of inquiry wave beams and inquiry wave beam numbers. Will K₁The query beams are grouped into Q₁Groups of interrogating beams, each group R₁An interrogation beam, R₁*Q₁＝K₁Therefore, the inquiry wave beam issuing time of each wave beam training period and the issued time frequency resource position are R₁And (4) respectively. That is, the time-frequency resource position issued in each beam training period is M + R₁By using Q₁The beam training period completes the beam training of the working beam set and the inquiry beam set.

In some embodiments, as shown in fig. 4, step S120 includes the steps of:

step S121: for each wave beam training period, transmitting pilot frequency information by using the working wave beams in the working wave beam set at the time frequency resource position within the working wave beam sending time corresponding to each wave beam training period;

in some embodiments, as described above, by utilizing Q₁The beam training period completes the beam training of the working beam set and the inquiry beam set. At Q₁Q of one beam training period₁And the network equipment sends pilot frequency information to the terminal at the corresponding M time frequency resource positions by using the M working beams in the beam set.

Step S122: and at the time-frequency resource position within the inquiry beam issuing time corresponding to each beam training period, sending pilot frequency information by using the inquiry beams in any inquiry beam group.

In some embodiments, at Q₁Q of one beam training period₁The time-frequency resource position in the sending time of each inquiry beam is utilized by the network equipment₁Individual query beamAnd transmitting the pilot frequency information to the terminal.

In some embodiments, at Q₁Q of one beam training period₁The network equipment can also utilize Q respectively at the time-frequency resource position within the sending time of each inquiry wave beam₁Query beams in a group query beam group transmit pilot information to a terminal to cause Q₁Group query beam groups in correspondence with Q₁The training is completed within each beam training period, thereby training all the query beams in the query beam set. I.e., during a first beam training period, using R within a first query beam set₁Each query beam being at corresponding R₁Transmitting pilot frequency information to the terminal from the time frequency resource position, and utilizing R in the second inquiry wave beam group in the second wave beam training period₁Each query beam being at corresponding R₁Sending pilot frequency information to the terminal at the position of each time frequency resource, and so on, at the Q < th > position₁A beam training period using the Q-th beam₁R within a query beam group₁Each query beam being at corresponding R₁And sending pilot frequency information to the terminal by each time-frequency resource position. It should be noted that Q may be paired in order₁The query beams in the set of query beams may or may not be trained in the order described above, provided that Q is guaranteed₁Group query beam groups in correspondence with Q₁And finishing training in each beam training period, so that all the query beams in the query beam set can be trained.

To this end, M working beams in the working beam set and K in the query beam set₁Each query beam is trained.

In the related art, M working beams and K are trained₁Each inquiry beam needs to send M + K in the beam training period₁And (4) the position of each time-frequency resource. In the embodiment, the base station issues the working beam and the inquiry beam, and the inquiry beam is divided into Q in different beam training periods₁Group transmission, thereby reducing the number of time-frequency resource positions (the number of working beams M + the number of inquiry beams R in each group) transmitted in each training period₁) Thereby utilizing less time-frequency resource location trainingMore beams are trained, the beam training efficiency is improved, and the system overhead is reduced. In addition, each beam training period issues a working beam, Q₁The working beam has been repeatedly transmitted Q after a beam training period₁By the method, the number of the working beams is increased, so that the opportunity of receiving the working beams by the terminal is increased, and the coverage area of the base station is expanded.

In some embodiments, as shown in fig. 5, the beam training method further includes:

step S130: and informing the terminal of the quantity of pilot frequency information issued in each beam training period so that the terminal can receive the working beam and the inquiry beam according to the quantity of the pilot frequency information.

In some embodiments, as described above, the time-frequency resource location issued in each beam training period is M + R₁The time frequency resource position is the time position of pilot frequency information placement in the frame structure, and correspondingly, the number of the pilot frequency information issued in each wave beam training period is also M + R₁A, Q₁The quantity of the pilot frequency information issued in each wave beam training period is also M + K₁And (4) respectively. The network device needs to inform the terminal of the number of pilot information M + R issued in each beam training period₁And Q₁Number of pilot information M + K issued in each wave beam training period₁. The terminal trains in each wave beam and in M + R₁Receiving pilot frequency information of M working beams and R at each moment and corresponding time frequency resource position₁Individual query beam pilot information.

In some embodiments, as shown in fig. 6, the beam training method further includes:

step S140: receiving the signal quality of the working beam and the inquiry beam fed back by the terminal;

step S150: an optimal set of beam pairs is determined based on the signal quality of the working beam and the query beam.

In some embodiments, the terminal receives pilot information for M operating beams and R₁After inquiring the pilot frequency information of the wave beam, the signal quality of the pilot frequency information is detected, and then M + R is fed back to the network equipment₁Signal quality of individual beams and beam number. NetThe network device receives the signal quality of the working beam and the query beam (i.e. the signal quality of the pilot information of the working beam and the signal quality of the pilot information of the query beam) fed back by the terminal, determines an optimal beam pair set according to the signal quality of the working beam and the signal quality of the query beam, and completes beam pair training.

A beam pair is a pair of communication links formed by a network device beam and a terminal beam. The optimal beam pair set may include one or more optimal beam pairs, and the optimal beam pair may be a pair of optimal working beams for the network device and the terminal to communicate with, or a pair of optimal query beams for the network device and the terminal to communicate with. It can be understood that if there is only one terminal on the terminal side, there is only one pair of optimal beam pairs; if the terminal side includes a plurality of terminals, the optimal beam pair set includes a plurality of optimal beam pairs, that is, optimal beam pairs between the network device and each terminal.

In some embodiments, the parameters of the Signal quality fed back by the terminal include, but are not limited to, RSRP (Reference Signal Receiving Power) and SINR (Signal to interference plus Noise Ratio).

In some embodiments, as shown in fig. 7, after determining the optimal set of beam pairs, the beam training method further includes:

step S160: comparing the signal quality of the working beam with the signal quality of the query beam in the optimal set of beam pairs;

step S170: and updating the working beam set and the inquiry beam set according to the comparison result.

In some embodiments, in order to guarantee the communication quality of the network device and the terminal, the working beam set and the query beam set need to be updated. The network equipment updates the working beams in the working beam set and the query beams in the query beam set by comparing the signal quality of the working beams with the signal quality of the query beams in the optimal beam pair set fed back by the terminal.

In some embodiments, as shown in fig. 8, step S170 includes:

step S171: judging whether the difference value between the signal quality of the query wave beam and the signal quality of the working wave beam in the optimal wave beam pair set is larger than a first threshold value or not; if yes, go to step S172, otherwise go to step S173;

step S172: deleting the query beam from the query beam set, and adding the query beam as a working beam into the working beam set;

step S173: the working set of beams and the interrogating set of beams are kept unchanged.

In some embodiments, in the optimal beam pair set, the signal quality of the working beam is subtracted from the signal quality of the query beam, and if the difference is greater than a first threshold value, it indicates that the communication quality of the query beam is better (in this case, the optimal beam is the query beam), the query beam is deleted from the query beam set and added as the working beam to the working beam set; otherwise, the working set of beams and the query set of beams are kept unchanged.

In some embodiments, as shown in fig. 8, step S170 further includes:

step S174: judging whether the difference value between the signal quality of the working beam and the signal quality of the inquiry beam in the optimal beam pair set is smaller than a second threshold value or not; if yes, go to step S175; otherwise, step S173 is executed;

step S175: the working beam is deleted from the working beam set and added as a query beam to the query beam set.

In some embodiments, in the optimal beam pair set, the signal quality of the working beam is subtracted from the signal quality of the query beam, and if the difference is smaller than a second threshold, which indicates that the communication quality of the working beam is poor, the working beam is deleted from the working beam set and added as the query beam to the query beam set.

In some embodiments, since the working beam is used for long-time communication between the network device and the terminal, a judgment mechanism needs to be added for deleting the working beam to avoid misjudgment. In some embodiments, in the optimal beam pair set, the signal quality of the query beam is subtracted from the signal quality of the working beam, and if the difference is smaller than the second threshold value and lasts for a preset time, which indicates that the communication quality of the working beam is poor in the preset time, the working beam is deleted from the working beam set and added to the query beam set as the query beam.

In the above embodiment, the network device updates the beam set according to the feedback of one terminal. If the terminal side includes multiple terminals, in some embodiments, the network device may also update the beam set according to feedback of the multiple terminals with a certain criterion, and accordingly,

as shown in fig. 9, step S140 includes:

step S141: receiving signal qualities of a plurality of working beams and a plurality of inquiry beams fed back by a plurality of terminals;

the step S150 includes:

step S151: an optimal set of beam pairs is determined based on the signal quality of the plurality of working beams and the plurality of query beams.

As shown in fig. 10, the beam training method further includes:

step S180: updating the working beam set and the query beam set according to the proportion that the optimal beam in the optimal beam pair set fed back by the terminal is the query beam;

alternatively, the first and second electrodes may be,

step S190: and updating the working beam set and the inquiry beam set according to the attribute parameters of the terminal.

In some embodiments, if the terminal side includes a plurality of terminals, the determined optimal beam pair set includes a plurality of optimal beam pairs, that is, optimal beam pairs between the network device and each terminal. The network device determines an optimal beam pair set according to the signal quality of a plurality of working beams and a plurality of query beams fed back by a plurality of terminals, calculates the proportion that the optimal beam in the optimal beam pair set is the query beam, and if the proportion is greater than a preset proportion, executes step S160 and step S170 to update the working beam set and the query beam set.

In some embodiments, the working set of beams and the query set of beams may also be updated according to attribute parameters of the terminal. The attribute parameter of the terminal may be a soft attribute parameter of the terminal, such as a terminal service class. Taking the example that the terminal service level includes a high priority terminal and a normal level terminal, if the terminal is the high priority terminal, the network device updates the working beam to the high priority terminal no matter what the signal quality or the ratio of the working beam and the inquiry beam fed back by different terminals in the network, so as to ensure the normal communication between the network device and the high priority terminal. If the terminal is a normal-grade terminal, the network device may determine whether to update the working beam according to the influence on the overall performance of the system, which is fed back by the plurality of terminals.

In some embodiments, after the network device updates the working beam set and the query beam set, the time-frequency resource location is also updated according to the updated working beam set and the updated query beam set.

As can be seen from the above examples, M + K is originally used₁Training M + K for time-frequency resource position₁The wave beam training method provided by the embodiment of the invention only needs M + R₁The M + K can be trained by each time-frequency resource position₁And the beam training efficiency is improved and the system overhead is reduced by using the single beam.

In some embodiments, as shown in fig. 11, the beam training method further includes:

step S1100: updating the beam width of the working beam or the beam width of the inquiry beam or the grouping mode of the inquiry beam set;

step S1110: the beam training method similar to steps S110 to S190 is repeatedly performed.

In some embodiments, as shown in fig. 12, step S1110 includes:

step S1111: acquiring an updated working beam set and an updated inquiry beam set; the updated working beam set includes at least one working beam and the updated query beam set includes K₂Individual query beam, K₂Each query beam being divided into Q₂Group query beam group, K₂And Q₂Are all greater than or equal toA positive integer of 2;

in some embodiments, K₂Each query beam being divided into Q₂Groups of interrogating beams, each group having R₂An interrogation beam, R₂*Q₂＝K₂，K₂And Q₂Are all positive integers greater than or equal to 2.

Step S1112: using Q₂Sending pilot frequency information at a time-frequency resource position in each wave beam training period so as to train the updated working wave beam set and the updated inquiry wave beam set;

step S1113: informing the terminal of the quantity of pilot frequency information issued in each beam training period so that the terminal can receive working beams and inquiry beams according to the quantity of the pilot frequency information;

step S1114: receiving the signal quality of the working beam and the inquiry beam fed back by the terminal;

step S1115: determining an optimal beam pair set according to the signal quality of the working beam and the query beam;

step S1116: comparing the signal quality of the working beam with the signal quality of the query beam in the optimal set of beam pairs;

step S1117: updating the working beam set and the inquiry beam set according to the comparison result;

step S1118: updating the working beam set and the query beam set according to the proportion that the optimal beam in the optimal beam pair set is the query beam;

step S1119: and updating the working beam set and the inquiry beam set according to the attribute parameters of the terminal.

Please refer to the description of step S110 to step S190 for the flow from step S1111 to step S1119, which is not described herein again.

For example, as shown in fig. 13, in the first beam training total period (the first beam training total period includes Q)₁One beam training period) performs the beam training method of steps S110 to S190 to perform beam training. Updating the beam width of the working beam or the beam width of the query beam or the grouping of the query beam set, in the second beamTotal period of training (the second total period of beam training includes Q₂One beam training period) performs step S1110, and performs beam training.

In some embodiments, in different beam training periods, by repeatedly performing the beam training method as described above by updating the beam width of the working beam or updating the beam width of the query beam or updating the grouping manner of the query beam set, more types of beams can be trained, thereby realizing communication between the base station and more types of terminals.

It should be noted that the beam width is used to characterize the size of the area covered by the beam. The beam width is inversely related to the number of beams. For example, the beam width of the query beam in the second beam training period is reduced by 2 times compared with the beam width of the query beam in the first beam training period, and the number of query beams to be transmitted in the second beam training period is 2 times larger than the number of query beams to be transmitted in the first beam training period. By updating the beamwidth of the query beam, 2 query beams are trained.

It should be further noted that the grouping manner for updating the query beam set specifically includes updating the number of query beams and the number of query beams in each group. For example, 24 query beams are divided into 8 groups, with 3 query beams per group; after the update, the 48 query beams are divided into 8 groups of 6 query beams.

Further exemplary explanation may refer to application example two through application example four, below.

In a second aspect, an embodiment of the present invention provides a beam training method, which is applied to a terminal. The terminal may be a mobile terminal device or a non-mobile terminal device. The mobile terminal equipment can be a mobile phone, a tablet computer, a notebook computer, a palm computer, vehicle-mounted terminal equipment, wearable equipment, a super mobile personal computer, a netbook, a personal digital assistant and the like; the non-mobile terminal equipment can be a personal computer, a television, a teller machine or a self-service machine and the like; the embodiments of the present invention are not particularly limited.

As shown in fig. 14, the method includes:

step S210: at Q₁Receiving a plurality of pilot frequency information from network equipment at a time-frequency resource position in a beam training period; the plurality of pilot information includes at least one operating beam pilot information and K₁Query beam pilot information; wherein the work beam pilot information is used by the network device to utilize the work beam at Q₁Q within one beam training period₁Pilot frequency information sent by down sending time of each working beam, inquiry beam pilot frequency information is used by network equipment to use any one inquiry beam group in Q₁Q within one beam training period₁Pilot frequency information sent by the sending time of each inquiry wave beam.

In some embodiments, the network device utilizes the operating beam at Q₁Q within one beam training period₁Sending work beam pilot frequency information to the terminal by the down sending time of each work beam, and using any one group of inquiry beam groups to be in Q₁Q within one beam training period₁And sending inquiry beam pilot frequency information to the terminal according to the inquiry beam issuing time. Terminal at Q₁And receiving the pilot frequency information of the working wave beam and the pilot frequency information of the inquiry wave beam at the time-frequency resource position in the wave beam training period. If there are M working beams in the working beam set acquired by the network equipment, there are K working beams in the inquiry beam set₁The number of pilot frequency information received by the terminal is M + K for each working beam₁。

Step S220: the signal quality of the plurality of pilot information is detected.

In some embodiments, the terminal detects the Signal quality of the working beam pilot information and the query beam pilot information after Receiving the working beam pilot information and the query beam pilot information, and the detected parameters include, but are not limited to, RSRP (reference Signal Receiving Power) and SINR (Signal to interference plus Noise Ratio).

Step S230: and feeding back the signal quality of the wave beam corresponding to the plurality of pilot frequency information to the network equipment.

In some embodiments, after the terminal detects the signal quality of the working beam pilot information and the query beam pilot information, the signal quality of the beam corresponding to the pilot information is fed back to the network device, so that the network device determines the optimal beam pair set according to the feedback of the terminal, and then updates the working beam set and the query beam set according to the signal quality of the working beam and the signal quality of the query beam in the optimal beam pair set, where in some embodiments, the update process refers to the description in the first aspect.

In some embodiments, as shown in fig. 15, the beam training method further includes:

step S240: receiving the quantity of pilot frequency information issued in each wave beam training period from the network equipment;

correspondingly, step S210 includes:

and receiving pilot frequency information corresponding to the pilot frequency information quantity at the time-frequency resource position in each wave beam training period.

In some embodiments, the terminal receives the amount of pilot information transmitted in each beam training period from the network device. If there are M working beams in the working beam set acquired by the network equipment, there is R in each inquiry beam group₁Each inquiry beam, the quantity of pilot frequency information received by the terminal in a beam training period is M + R₁. The terminal receives the time frequency resource position corresponding to the pilot frequency information quantity M + R in each wave beam training period₁I.e. receiving M operating beam pilot information and R₁Individual query beam pilot information. After receiving the pilot frequency information, the terminal detects the signal quality of the pilot frequency information and then feeds back M + R to the network equipment₁Signal quality and beam number of the individual beam pilot information.

In a third aspect, an embodiment of the present invention provides a beam training method, which is applied to a system formed by a network device and a terminal, and includes the beam training method according to the first aspect and the beam training method according to the second aspect.

The following describes the beam training method according to the first aspect and the beam training method according to the second aspect with four specific application examples. In all of the four specific application examples, the network device is taken as a base station.

Application example 1

In application example one, the working beam uses the same beamwidth and the query beam uses the same beamwidth during different beam training periods.

The base station acquires 64 beams (i.e., N-64) covering the target area as a beam set Z: { Z₁，Z₂，……，Z₆₄}. And selecting a beam set to be transmitted from the beam set Z to carry out beam training. The issued beam set comprises a working beam set and a query beam set, wherein the working beam set is W: { W₁，W₂，……，W₁₆A total of 16 operating beams (i.e., M-16); query beam set is S: { S₁，S₂，……，S₄₈A total of 48 query beams (i.e., K)₁＝48)。

The 48 query beams are grouped into 8 beams each (i.e., R)₁8) into 6 groups (i.e., Q) of group 1, group 2, … …₁6). Because the time frequency resource position of the working beam and the working beam are mapped in a one-to-one way, namely one time frequency resource position maps one working beam and the working beam number, the working beam issuing time in each beam training period T is 16 in total; the time frequency resource position of the inquiry wave beam and the inquiry wave beam are mapped in a one-to-many way, namely, one time frequency resource position maps a plurality of inquiry wave beams and inquiry wave beam numbers, so that the issuing time of the inquiry wave beam in each wave beam training period T is 8, and the issued time frequency resource positions are all 8. That is, the positions of the time-frequency resource issued in each beam training period T are 16+8 to 24, and a total of 6 beam training periods are required to complete the beam training of the working beam set and the query beam set.

Mapping table of beam and time frequency resource position issued in table 1

As can be seen from table 1:

in different wave beam training periods and in the working wave beam issuing time, the issued working wave beam is kept unchanged.

In different beam training periods and the inquiry beam issuing time, the issued inquiry beams are issued in groups, and the inquiry beam issuing time in the first beam training period issues a first group of inquiry beams; issuing a second group of inquiry wave beams according to the inquiry wave beam issuing time in the second wave beam training period; and repeating the steps until the inquiry beam issuing time in the 6 th beam training period, and issuing the 6 th group of inquiry beams.

Such a beam down transmission process is repeated until all the query beam sets complete one transmission.

Meanwhile, in each beam training period issued by the base station, the terminal receives 16 pieces of working beam pilot information and 8 pieces of inquiry beam pilot information at 24 moments and corresponding time-frequency resource positions thereof, detects the signal quality (including but not limited to RSRP and SINR) of the known pilot information, and feeds back 24 beam numbers and signal quality to the base station. I.e., the beam numbers and the signal qualities of the corresponding beams are in one-to-one correspondence, so that the base station can know the signal quality corresponding to each working beam or query beam.

And the base station selects an optimal beam pair set between the base station and the terminal according to the signal quality of the working beam and the inquiry beam fed back by the terminal to finish beam training.

In the process, the base station adopts 24 time-frequency resource positions to train 64 beams, and in the related technology, 64 time-frequency resource positions are required for training 64 beams, so that the beam training method of the embodiment obviously reduces the system overhead and improves the beam training efficiency.

Preferably, no storage overhead and no reporting overhead are additionally added to the terminal in the process.

Application example two

In application example two, the working beam uses the same beam width and the query beam uses different beam widths in different total beam training periods. Taking the total period of beam training as 2 as an example, the first total period of beam training includes 3 beam training periods T, and the second total period of beam training includes 6 beam training periods T. A wide beam of the query beam in the first total period of beam training corresponds to the same coverage area as the 2 narrow beams of the query beam in the second total period of beam training. It will be appreciated that the number of query beams in the second total period of beam training is 2 times the number of query beams in the first total period of beam training.

First total period of beam training (query beam is wide beam):

the base station acquires 40 beams (i.e., N ═ 40) covering the target area as a beam set Z: { Z₁，Z₂，……，Z₄₀}. And selecting a beam set to be transmitted from the beam set Z to carry out beam training. The issued beam set comprises a working beam set and a query beam set, wherein the working beam set is W: { W₁，W₂，……，W₁₆A total of 16 operating beams (i.e., M-16); query beam set is S: { S₁，S₂，……，S₂₄A total of 24 query beams (i.e., K)₁＝24)。

The 24 query beams are grouped into 8 beams each (i.e., R)₁8) into 3 groups (i.e., Q) of group 1, group 2, … …₁3). Because the time frequency resource position of the working beam and the working beam are mapped in a one-to-one way, namely one time frequency resource position maps one working beam and the working beam number, the working beam issuing time in each beam training period T is 16 in total; the time frequency resource position of the inquiry wave beam and the inquiry wave beam are mapped in a one-to-many way, namely, one time frequency resource position maps a plurality of inquiry wave beams and inquiry wave beam numbers, so that the issuing time of the inquiry wave beam in each wave beam training period T is 8, and the issued time frequency resource positions are all 8. That is, the positions of the time-frequency resource issued in each beam training period T are 16+8 to 24, and a total of 3 beam training periods are required to complete the working beam set and the query beam setAnd (4) combined beam training.

Table 2 shows the mapping table of the beam and the time frequency resource position (the first training total period, the query beam is a wide beam)

Period of beam training	Location of time-frequency resources	Working beam	Interrogating beam
				T1	1	1	Null
T1	2	2	Null
				T1	3	3	Null
T1	……	……	Null
				T1	16	16	Null
T1	17	Null	1
				T1	18	Null	2
T1	……	Null	……
				T1	24	Null	8
T2	1	1	Null
				T2	2	2	Null
T2	3	3	Null
				T2	……	……	Null
T2	16	16	Null
				T2	17	Null	9
T2	18	Null	10
				T2	……	Null	……
T2	24	Null	16
				T3	1	1	Null
T3	2	2	Null
				T3	3	3	Null
T3	……	……	Null
				T3	16	16	Null
T3	17	Null	17
				T3	18	Null	18
T3	……	Null	……
				T3	24	Null	24

As can be seen from table 2:

in different wave beam training periods and in the working wave beam issuing time, the issued working wave beam is kept unchanged.

In different beam training periods and the inquiry beam issuing time, the issued inquiry beams are issued in groups, and the inquiry beam issuing time in the first beam training period issues a first group of inquiry beams; issuing a second group of inquiry wave beams according to the inquiry wave beam issuing time in the second wave beam training period; and repeating the steps until the inquiry beam issuing time in the 3 rd beam training period, and issuing the 3 rd group inquiry beam.

Such a beam down transmission process is repeated until all the query beam sets complete one transmission.

Meanwhile, in each beam training period issued by the base station, the terminal receives 16 pieces of working beam pilot information and 8 pieces of inquiry beam pilot information at 24 moments and corresponding time-frequency resource positions thereof, detects the signal quality (including but not limited to RSRP and SINR) of the known pilot information, and feeds back 24 beam numbers and signal quality to the base station.

And the base station selects an optimal beam pair set between the base station and the terminal according to the signal quality of the working beam and the inquiry beam fed back by the terminal to finish beam training.

In the first beam training total period, the base station adopts 24 time-frequency resource positions to train 40 beams, thereby obviously reducing the system overhead and improving the beam training efficiency.

Second total period of beam training (query beam is narrow beam):

the base station acquires 64 beams (i.e., N-64) covering the target area as a beam set Z: { Z₁，Z₂，……，Z₆₄}. And selecting a beam set to be transmitted from the beam set Z to carry out beam training. The issued beam set comprises a working beam set and a query beam set, wherein the working beam set is W: { W₁，W₂，……，W₁₆A total of 16 operating beams (i.e., M-16); query beam set is S: { S₁，S₂，……，S₄₈A total of 48 query beams (i.e., K)₂＝48)。

Will be 48 questionsThe beams are grouped into 8 beams each (i.e., R)₂8) into 6 groups (i.e., Q) of group 1, group 2, … …₂6). Because the time frequency resource position of the working beam and the working beam are mapped in a one-to-one way, namely one time frequency resource position maps one working beam and the working beam number, the working beam issuing time in each beam training period T is 16 in total; the time frequency resource position of the inquiry wave beam and the inquiry wave beam are mapped in a one-to-many way, namely, one time frequency resource position maps a plurality of inquiry wave beams and inquiry wave beam numbers, so that the issuing time of the inquiry wave beam in each wave beam training period T is 8, and the issued time frequency resource positions are all 8. That is, the positions of the time-frequency resource issued in each beam training period T are 16+8 to 24, and a total of 6 beam training periods are required to complete the beam training of the working beam set and the query beam set.

Table 3 shows the mapping table of the beam and the time frequency resource position (second training period, the inquiry beam is a narrow beam)

As can be seen from table 3:

in different wave beam training periods and in the working wave beam issuing time, the issued working wave beam is kept unchanged.

In different beam training periods and the inquiry beam issuing time, the issued inquiry beams are issued in groups, and the inquiry beam issuing time in the first beam training period issues a first group of inquiry beams; issuing a second group of inquiry wave beams according to the inquiry wave beam issuing time in the second wave beam training period; and repeating the steps until the inquiry beam issuing time in the 6 th beam training period, and issuing the 6 th group of inquiry beams.

Such a beam down transmission process is repeated until all the query beam sets complete one transmission.

Meanwhile, in each beam training period issued by the base station, the terminal receives 16 pieces of working beam pilot information and 8 pieces of inquiry beam pilot information at 24 moments and corresponding time-frequency resource positions thereof, detects the signal quality (including but not limited to RSRP and SINR) of the known pilot information, and feeds back 24 beam numbers and signal quality to the base station.

And the base station selects an optimal beam pair set between the base station and the terminal according to the signal quality of the working beam and the inquiry beam fed back by the terminal to finish beam training.

In the second total period of beam training, the base station adopts 24 time-frequency resource positions to train 64 beams, thereby obviously reducing the system overhead and improving the efficiency of beam training.

Application example three

The base station acquires 64 beams (i.e., N-64) covering the target area as a beam set Z: { Z₁，Z₂，……，Z₆₄}。

When the terminal side includes a plurality of terminals, the coverage angle range of the base station needs to be changed to satisfy that the beam issued by the base station can cover the plurality of terminals. It is worth mentioning that each terminal is configured with ID information.

And selecting a beam set to be transmitted from the beam set Z to carry out beam training. The issued beam set comprises a working beam set and a query beam set, wherein the working beam set is W: { W₁，W₂，……，W₁₆A total of 16 operating beams (i.e., M-16); query beam set is S: { S₁，S₂，……，S₄₈A total of 48 query beams (i.e., K)₁＝48)。

The 48 query beams are grouped into 8 beams each (i.e., R)₁8) into 6 groups (i.e., Q) of group 1, group 2, … …₁6). Because the time frequency resource position of the working beam and the working beam are mapped in a one-to-one way, namely one time frequency resource position maps one working beam and the working beam number, the working beam issuing time in each beam training period T is issuedThe number of the time frequency resource positions is 16; the time frequency resource position of the inquiry wave beam and the inquiry wave beam are mapped in a one-to-many way, namely, one time frequency resource position maps a plurality of inquiry wave beams and inquiry wave beam numbers, so that the issuing time of the inquiry wave beam in each wave beam training period T is 8, and the issued time frequency resource positions are all 8. That is, the positions of the time-frequency resource issued in each beam training period T are 16+8 to 24, and a total of 6 beam training periods are required to complete the beam training of the working beam set and the query beam set.

Table 4 mapping table of beam and time-frequency resource position

Period of beam training	Location of time-frequency resources	Working beam	Interrogating beam
				T1	1	1	Null
T1	2	2	Null
				T1	3	3	Null
T1	……	……	Null
				T1	16	16	Null
T1	17	Null	1
				T1	18	Null	2
T1	……	Null	……
				T1	24	Null	8
T2	1	1	Null
				T2	2	2	Null
T2	3	3	Null
				T2	……	……	Null
T2	16	16	Null
				T2	17	Null	9
T2	18	Null	10
				T2	……	Null	……
T2	24	Null	16
				……	……	……	……
T6	1	1	Null
				T6	2	2	Null
T6	3	3	Null
				T6	……	……	Null
T6	16	16	Null
				T6	17	Null	41
T6	18	Null	42
				T6	……	Null	……
T6	24	Null	48

As can be seen from table 4:

in different wave beam training periods and in the working wave beam issuing time, the issued working wave beam is kept unchanged.

In different beam training periods and the inquiry beam issuing time, the issued inquiry beams are issued in groups, and the inquiry beam issuing time in the first beam training period issues a first group of inquiry beams; issuing a second group of inquiry wave beams according to the inquiry wave beam issuing time in the second wave beam training period; and repeating the steps until the inquiry beam issuing time in the 6 th beam training period, and issuing the 6 th group of inquiry beams.

Such a beam down transmission process is repeated until all the query beam sets complete one transmission.

Meanwhile, in each beam training period issued by the base station, the terminal receives 16 pieces of working beam pilot information and 8 pieces of inquiry beam pilot information at 24 moments and corresponding time-frequency resource positions thereof, detects the signal quality (including but not limited to RSRP and SINR) of the known pilot information, and feeds back 24 pieces of beam numbers and signal quality as well as terminal ID information to the base station.

And the base station receives the signal quality fed back by the plurality of terminals, selects an optimal beam pair set between the base station and the corresponding terminal according to the terminal ID information according to the signal quality of the working beams and the inquiry beams fed back by the plurality of terminals, and completes beam training.

And the base station compares the signal quality of the working beam and the signal quality of the inquiry beam in the optimal beam pair set, and updates the working beam set and the inquiry beam set according to the comparison result.

And after updating the working beam set and the inquiry beam set, the base station updates the time-frequency resource position according to the updated working beam set and the updated inquiry beam set. Specifically, the number of time-frequency resource locations is updated according to the number of working beams in the updated working beam set and the number of query beams in the updated query beam set.

Application example four

In the fourth application example, in different total periods of beam training, the working beam adopts different beam widths, and the query beam also adopts different beam widths. Taking the total period of beam training as 2 as an example, the first total period of beam training includes 3 beam training periods T, and the second total period of beam training includes 5 beam training periods T. In addition, in the process of issuing the query beam, the number of time-frequency resource positions can be changed in each beam training total period, the number of time-frequency resource positions in the first beam training total period is 24, and the number of time-frequency resource positions in the second beam training total period is 32.

First beam training total period (number of time-frequency resource locations is 24):

the base station acquires 40 beams (i.e., N ═ 40) covering the target area as a beam set Z: { Z₁，Z₂，……，Z₄₀}. And selecting a beam set to be transmitted from the beam set Z to carry out beam training. The issued beam set comprises a working beam set and a query beam set, wherein the working beam set is W: { W₁，W₂，……，W₁₆A total of 16 operating beams (i.e., M-16); query beam set is S: { S₁，S₂，……，S₂₄A total of 24 query beams (i.e., K)₁＝24)。

The 24 query beams are grouped into 8 beams each (i.e., R)₁8) into 3 groups (i.e., Q) of group 1, group 2, … …₁3). Because the time-frequency resource position of the working beam and the working beam are mapped one to one, namely one time-frequency resource position maps one workThe working beams and the working beams are numbered, so that the working beam issuing time in each beam training period T is 16 in total, and the issued time frequency resource positions are determined; the time frequency resource position of the inquiry wave beam and the inquiry wave beam are mapped in a one-to-many way, namely, one time frequency resource position maps a plurality of inquiry wave beams and inquiry wave beam numbers, so that the issuing time of the inquiry wave beam in each wave beam training period T is 8, and the issued time frequency resource positions are all 8. That is, the positions of the time-frequency resource issued in each beam training period T are 16+8 to 24, and 3 beam training periods are required in total to complete the beam training of the working beam set and the query beam set.

Table 5 shows the mapping table of the beam and the time frequency resource location (the first total period of training, the number of the time frequency resource locations is 24)

As can be seen from table 5:

in different wave beam training periods and in the working wave beam issuing time, the issued working wave beam is kept unchanged.

In different beam training periods and the inquiry beam issuing time, the issued inquiry beams are issued in groups, and the inquiry beam issuing time in the first beam training period issues a first group of inquiry beams; issuing a second group of inquiry wave beams according to the inquiry wave beam issuing time in the second wave beam training period; and repeating the steps until the inquiry beam issuing time in the 3 rd beam training period, and issuing the 3 rd group inquiry beam.

Such a beam down transmission process is repeated until all the query beam sets complete one transmission.

Meanwhile, in each beam training period issued by the base station, the terminal receives 16 pieces of working beam pilot information and 8 pieces of inquiry beam pilot information at 24 moments and corresponding time-frequency resource positions thereof, detects the signal quality (including but not limited to RSRP and SINR) of the known pilot information, and feeds back 24 beam numbers and signal quality to the base station.

And the base station selects an optimal beam pair set between the base station and the terminal according to the signal quality of the working beam and the inquiry beam fed back by the terminal to finish beam training.

In the first beam training period, the base station adopts 24 time-frequency resource positions to train 40 beams, thereby obviously reducing the system overhead and improving the beam training efficiency.

Second total period of beam training (number of time-frequency resource locations is 32):

the base station acquires 64 beams (i.e., N-64) covering the target area as a beam set Z: { Z₁，Z₂，……，Z₆₄}. And selecting a beam set to be transmitted from the beam set Z to carry out beam training. The issued beam set comprises a working beam set and a query beam set, wherein the working beam set is W: { W₁，W₂，……，W₂₄A total of 24 working beams (i.e., 24); query beam set is S: { S₁，S₂，……，S₄₀A total of 40 query beams (i.e., K)₂＝48)。

The 40 query beams are grouped into 8 beams each (i.e., R)₂8) into 5 groups (i.e., Q) of group 1, group 2, … …₂5). Because the time frequency resource position of the working beam and the working beam are mapped in a one-to-one way, namely one time frequency resource position maps one working beam and the working beam number, the working beam issuing time in each beam training period T is 24 in total; the time frequency resource position of the inquiry wave beam and the inquiry wave beam are mapped in a one-to-many way, namely, one time frequency resource position maps a plurality of inquiry wave beams and inquiry wave beam numbers, so that the issuing time of the inquiry wave beam in each wave beam training period T is 8, and the issued time frequency resource positions are all 8. That is, the positions of the time-frequency resource issued in each beam training period T are 24+ 8-32, and a total of 5 beam training periods are required to complete the waves of the working beam set and the query beam setAnd (5) training a bundle.

Table 6 shows the mapping table of the beam and the time frequency resource location (the second total period of training, the number of the time frequency resource locations is 32)

As can be seen from table 6:

in different wave beam training periods and in the working wave beam issuing time, the issued working wave beam is kept unchanged.

In different beam training periods and the inquiry beam issuing time, the issued inquiry beams are issued in groups, and the inquiry beam issuing time in the first beam training period issues a first group of inquiry beams; issuing a second group of inquiry wave beams according to the inquiry wave beam issuing time in the second wave beam training period; and repeating the steps until the inquiry beam issuing time in the 5 th beam training period, and issuing the 5 th group of inquiry beams.

Such a beam down transmission process is repeated until all the query beam sets complete one transmission.

Meanwhile, in each beam training period issued by the base station, the terminal receives 24 pieces of working beam pilot information and 8 pieces of inquiry beam pilot information at 32 moments and corresponding time-frequency resource positions thereof, detects the signal quality (including but not limited to RSRP and SINR) of the known pilot information, and feeds back 32 beam numbers and signal quality to the base station.

And the base station selects an optimal beam pair set between the base station and the terminal according to the signal quality of the working beam and the inquiry beam fed back by the terminal to finish beam training.

In the second beam training total period, the base station adopts 32 time-frequency resource positions to train 64 beams, thereby obviously reducing the system overhead and improving the beam training efficiency.

In the fourth application example, the working beam set and the query beam set are changed in different total beam training periods. In this process, as the number of working beams increases, the opportunity for the terminal to receive the working beams is increased, while continuing to query with the query beam to extend the coverage area of the base station is preserved.

In a fourth aspect, an embodiment of the present invention provides a network device, where the network device includes a memory, a processor, and a program stored in the memory and executable on the processor, where the program, when executed by the processor, implements the steps of the beam training method according to the first aspect.

In some embodiments, the network device is a base station, and may also be other network devices that can implement the functions of the base station.

In a fifth aspect, an embodiment of the present invention provides a terminal, where the terminal includes a memory, a processor, and a program stored in the memory and executable on the processor, and the program, when executed by the processor, implements the steps of the beam training method according to the second aspect.

In some embodiments, the terminal may be a mobile terminal device or a non-mobile terminal device. The mobile terminal equipment can be a mobile phone, a tablet computer, a notebook computer, a palm computer, vehicle-mounted terminal equipment, wearable equipment, a super mobile personal computer, a netbook, a personal digital assistant and the like; the non-mobile terminal equipment can be a personal computer, a television, a teller machine or a self-service machine and the like; the embodiments of the present invention are not particularly limited.

In a sixth aspect, an embodiment of the present invention provides a beam training system, including a network device and a terminal, where the network device is configured to perform the steps of the beam training method according to the first aspect, and the terminal is configured to perform the steps of the beam training method according to the second aspect, so as to perform beam training between the network device and the terminal.

In some embodiments, the network device is a base station, and may also be other network devices that can implement the functions of the base station.

In some embodiments, the terminal may be a mobile terminal device or a non-mobile terminal device. The mobile terminal equipment can be a mobile phone, a tablet computer, a notebook computer, a palm computer, vehicle-mounted terminal equipment, wearable equipment, a super mobile personal computer, a netbook, a personal digital assistant and the like; the non-mobile terminal equipment can be a personal computer, a television, a teller machine or a self-service machine and the like; the embodiments of the present invention are not particularly limited.

In a seventh aspect, an embodiment of the present invention provides a storage medium for a computer-readable storage, where one or more programs are stored, and the one or more programs are executable by one or more processors to implement the steps of the beam training method according to the first aspect or the steps of the beam training method according to the second aspect.

One of ordinary skill in the art will appreciate that all or some of the steps of the methods, systems, functional modules/units in the devices disclosed above may be implemented as software, firmware, hardware, and suitable combinations thereof.

In a hardware implementation, the division between functional modules/units mentioned in the above description does not necessarily correspond to the division of physical components; for example, one physical component may have multiple functions, or one function or step may be performed by several physical components in cooperation. Some or all of the physical components may be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit. Such software may be distributed on computer readable media, which may include computer storage media (or non-transitory media) and communication media (or transitory media). The term computer storage media includes volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data, as is well known to those of ordinary skill in the art. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, Digital Versatile Disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to store the desired information and which can accessed by a computer. In addition, communication media typically embodies computer readable instructions, data structures, program modules or other data in a modulated data signal such as a carrier wave or other transport mechanism and includes any information delivery media as known to those skilled in the art.

The preferred embodiments of the present invention have been described above with reference to the accompanying drawings, and are not to be construed as limiting the scope of the invention. Any modifications, equivalents and improvements which may occur to those skilled in the art without departing from the scope and spirit of the present invention are intended to be within the scope of the claims.