阅读说明：本技术 数据传输时的波束确定方法及装置、存储介质、ue、基站 (Beam determination method and device during data transmission, storage medium, UE (user Equipment) and base station ) 是由 高兴航 于 2020-04-27 设计创作，主要内容包括：一种数据传输时的波束确定方法及装置、存储介质、UE、基站,其中,所述方法包括：确定用于响应数据传输的目标SSB；向基站发送上行数据,并在发送所述上行数据时指示所述目标SSB,以使所述基站使用所述目标SSB发送响应于所述上行数据的响应信息；其中,所述SSB和波束一一对应。通过该方法,能够避免基站不必要的资源浪费,节省基站的功耗。(A method and a device for determining a beam during data transmission, a storage medium, a UE and a base station are provided, wherein the method comprises the following steps: determining a target SSB for responding to the data transmission; sending uplink data to a base station, and indicating the target SSB when sending the uplink data, so that the base station sends response information responding to the uplink data by using the target SSB; wherein, the SSBs correspond to the beams one to one. By the method, unnecessary resource waste of the base station can be avoided, and power consumption of the base station is saved.)

1. A method for determining a beam during data transmission, the method comprising:

determining a target SSB for responding to the data transmission;

sending uplink data to a base station, and indicating the target SSB when sending the uplink data, so that the base station sends response information responding to the uplink data by using the target SSB;

wherein, the SSBs correspond to the beams one to one.

2. The method of claim 1, wherein the indicating the target SSB when transmitting uplink data comprises:

when the uplink data are sent, the target SSB is indirectly indicated through the DMRS resources associated with the uplink data and a preset mapping relation, wherein the preset mapping relation comprises a one-to-one correspondence relation between the DMRS resources and the SSB.

3. The method of claim 2, wherein the indirectly indicating the target SSB through a preset mapping relationship and DMRS resources associated with uplink data when transmitting the uplink data comprises:

determining DMRS resources corresponding to the target SSB according to the target SSB and a preset mapping relation;

and when the uplink data is sent, using the DMRS resource corresponding to the target SSB to correlate the uplink data.

4. The method of claim 2, in which the DMRS resources are DMRS sequences and/or DMRS ports.

5. The method of any of claims 2 to 4, further comprising:

and receiving system information or dedicated RRC signaling to acquire DMRS resource configuration and the preset mapping relation.

6. The method of claim 1, wherein the indicating the target SSB when transmitting uplink data comprises:

and when sending the uplink data, directly indicating the target SSB by using a reporting signaling.

7. The method of claim 6, wherein the reporting signaling is carried in a medium access control unit (MAC) or uplink control information (UPDCI).

8. A method for determining a beam during data transmission, the method comprising:

receiving uplink data sent by UE, and determining a target SSB for responding to data transmission according to the uplink data;

transmitting response information in response to the uplink data using the target SSB;

wherein, the SSBs correspond to the beams one to one.

9. The method of claim 8, wherein the determining a target SSB for a response data transmission according to the uplink data sent by the UE comprises:

and determining the DMRS resource associated with the uplink data, and determining the target SSB corresponding to the DMRS resource associated with the uplink data through a preset mapping relation, wherein the preset mapping relation comprises a one-to-one correspondence relation between the DMRS resource and the SSB.

10. The method of claim 9, wherein the DMRS resources are DMRS sequences and/or DMRS ports.

11. The method according to claim 9 or 10, characterized in that the method further comprises:

and indicating the DMRS resource configuration and the preset mapping relation through system information or dedicated RRC signaling sent to the UE.

12. The method of claim 8, wherein the uplink data comprises reporting signaling directly indicating the target SSB, and wherein the determining the target SSB for responding to data transmission according to the uplink data sent by the UE comprises:

and determining the target SSB according to the reporting signaling.

13. The method of claim 12, wherein the reporting signaling is carried in a medium access control unit (MAC) or uplink control information (UPDCI).

14. An apparatus for beam determination in data transmission, the apparatus comprising:

a target SSB determination module for determining a target SSB for responding to the data transmission;

an uplink data sending module, configured to send uplink data to a base station, and indicate the target SSB when sending the uplink data, so that the base station sends response information responding to the uplink data by using the target SSB;

wherein, the SSBs correspond to the beams one to one.

15. An apparatus for beam determination in data transmission, the apparatus comprising:

an uplink data receiving module, configured to receive uplink data sent by the UE, and determine a target SSB for responding to data transmission according to the uplink data;

a response module, configured to send, by using the target SSB, response information in response to the uplink data;

wherein, the SSBs correspond to the beams one to one.

16. A storage medium having stored thereon a computer program for implementing the steps of the method of any one of claims 1 to 7, or 8 to 13 when executed by a processor.

17. A UE comprising a memory and a processor, the memory storing a computer program, wherein the processor when executing the computer program performs the steps of the method of any of claims 1 to 7.

18. A base station comprising a memory and a processor, the memory storing a computer program, wherein the processor when executing the computer program performs the steps of the method of any one of claims 8 to 13.

Technical Field

The present invention relates to the field of communications, and in particular, to a method and an apparatus for determining a beam during data transmission, a storage medium, a UE, and a base station.

Background

In Long Term Evolution (LTE) of a fourth Generation communication protocol (4Generation, abbreviated as 4G), data transmission on a Preconfigured uplink Resource (pucch) may be supported, a serving cell where a UE is located may be regarded as a single beam (beam) operation, and a base station may directly send a response message to the beam UE.

In a New Radio (NR) of a fifth Generation communication protocol (5Generation, abbreviated as 5G), multi-beam (beam) operation is supported, each beam corresponds to a Synchronization Signal and PBCH block (SSB), and can access to a User Equipment (UE). In the standard text (release) -15/Rel-16, abbreviated as R15/R16, when the UE has no data transceiving, the base station may instruct the UE to perform an Inactive (Inactive) state, and the UE in the Inactive state may transition to a connected state through a Random Access (RA) procedure. The standard text Rel-17 (R17 for short) supports the data transmission of the UE on the PUR under the Inactive state, and transmits the uplink data. However, if the base station configuration is a multi-SSB operation, after the UE finishes transmitting uplink data, the base station needs to know which SSB to send a response message to the UE. If the base station sends the response message to the UE by using all available SSBs, the UE can be guaranteed to receive the response message. However, the base station transmitting the response messages at all SSBs causes unnecessary waste of resources and increases power consumption of the base station.

Disclosure of Invention

The technical problem solved by the invention is how to avoid resource waste and power consumption caused by the transmission of response messages by the base station in all SSBs.

In order to solve the foregoing technical problem, an embodiment of the present invention provides a method for determining a beam during data transmission, where the method includes: determining a target SSB for responding to the data transmission; sending uplink data to a base station, and indicating the target SSB when sending the uplink data, so that the base station sends response information responding to the uplink data by using the target SSB; wherein, the SSBs correspond to the beams one to one.

Optionally, the indicating the target SSB when sending the uplink data includes: when the uplink data are sent, the target SSB is indirectly indicated through the DMRS resources associated with the uplink data and a preset mapping relation, wherein the preset mapping relation comprises a one-to-one correspondence relation between the DMRS resources and the SSB.

Optionally, when the uplink data is sent, the target SSB is indirectly indicated through a preset mapping relationship and DMRS resources associated with the uplink data, where the method includes: determining DMRS resources corresponding to the target SSB according to the target SSB and a preset mapping relation; and when the uplink data is sent, using the DMRS resource corresponding to the target SSB to correlate the uplink data.

Optionally, the DMRS resource is a DMRS sequence and/or a DMRS port.

Optionally, the beam determination method further includes: and receiving system information or dedicated RRC signaling to acquire DMRS resource configuration and the preset mapping relation.

Optionally, the indicating the target SSB when sending the uplink data includes: and when sending the uplink data, directly indicating the target SSB by using a reporting signaling.

Optionally, the reporting signaling is carried in a medium access control unit or uplink control information.

The embodiment of the invention also provides a beam determining method in data transmission, which comprises the following steps: receiving uplink data sent by UE, and determining a target SSB for responding to data transmission according to the uplink data; transmitting response information in response to the uplink data using the target SSB; wherein, the SSBs correspond to the beams one to one.

Optionally, the determining, according to the uplink data sent by the UE, a target SSB for responding to data transmission includes: and determining the DMRS resource associated with the uplink data, and determining the target SSB corresponding to the DMRS resource associated with the uplink data through a preset mapping relation, wherein the preset mapping relation comprises a one-to-one correspondence relation between the DMRS resource and the SSB.

Optionally, the DMRS resource is a DMRS sequence and/or a DMRS port.

Optionally, the beam determination method further includes: and indicating the DMRS resource configuration and the preset mapping relation through system information or dedicated RRC signaling sent to the UE.

Optionally, the determining, by the uplink data sent by the UE, a target SSB for responding to data transmission includes: and determining the target SSB according to the reporting signaling.

Optionally, the reporting signaling is carried in a medium access control unit or uplink control information.

An embodiment of the present invention further provides a beam determining apparatus in data transmission, where the apparatus includes: a target SSB determination module for determining a target SSB for responding to the data transmission; an uplink data sending module, configured to send uplink data to a base station, and indicate the target SSB when sending the uplink data, so that the base station sends response information responding to the uplink data by using the target SSB; wherein, the SSBs correspond to the beams one to one.

An embodiment of the present invention further provides a beam determining apparatus in data transmission, where the apparatus includes: an uplink data receiving module, configured to receive uplink data sent by the UE, and determine a target SSB for responding to data transmission according to the uplink data; a response module, configured to send, by using the target SSB, response information in response to the uplink data; wherein, the SSBs correspond to the beams one to one.

An embodiment of the present invention further provides a storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the steps of any one of the above methods.

An embodiment of the present invention further provides a UE, which includes a memory and a processor, where the memory stores a computer program, and the processor implements the steps of any one of the above methods when executing the computer program.

The embodiment of the present invention further provides a base station, which includes a memory and a processor, where the memory stores a computer program, and the processor implements the steps of any one of the above methods when executing the computer program.

Compared with the prior art, the technical scheme of the embodiment of the invention has the following beneficial effects:

the embodiment of the invention provides a beam determining method in data transmission, which comprises the following steps: determining a target SSB for responding to the data transmission; sending uplink data to a base station, and indicating the target SSB when sending the uplink data, so that the base station sends response information responding to the uplink data by using the target SSB; wherein, the SSBs correspond to the beams one to one. According to the scheme of the embodiment of the invention, the target SSB is indicated when the UE sends the uplink data to the network side, so that the base station can directly send the response message corresponding to the uplink data to the UE through the target SSB without sending the response message to all SSBs configured by the base station, thereby avoiding unnecessary resource waste and saving the power consumption of the base station.

Further, the preset mapping relationship between the DMRS resource and the SSB may be a mapping relationship between the DMRS sequence and the SSB, or a mapping relationship between the DMRS port and the SSB, or a mapping relationship between the DMRS sequence and the DMRS port combined together and the SSB, so that the UE indicates the target SSB when transmitting uplink data through the DMRS resource.

Further, the UE may also directly indicate the target SSB in the uplink data sent to the base station through the report signaling, so that the base station determines the target SSB according to the decoded uplink data, and sends a downlink response message to the UE using the target SSB. The reporting signaling can be carried by the MACCE or UCI.

Drawings

Fig. 1 is a schematic diagram of a first scenario after a UE sends a recovery request to a network in the prior art;

fig. 2 is a diagram of a second scenario after a UE sends a resume request to the network in the prior art;

fig. 3 is a diagram illustrating a third scenario after a UE sends a resume request to a network in the prior art;

fig. 4 is a diagram illustrating a fourth scenario after a UE sends a resume request to a network in the prior art;

fig. 5 is a flowchart illustrating a first method for determining a beam during data transmission according to an embodiment of the present invention;

fig. 6 is a schematic diagram of a preset mapping relationship between a DMRS sequence or a port and an SSB in an application example of the present invention;

fig. 7 is a diagram illustrating a predetermined mapping relationship between DMRS sequences and port combinations and SSBs in an application example of the present invention;

FIG. 8 is a diagram illustrating an example of an application of the present invention in which an 8-bit MAC CE is used to indicate a target SSB;

FIG. 9 is a diagram illustrating the use of a 16-bit MAC CE to indicate a target SSB in an exemplary application of the present invention;

FIG. 10 is a diagram illustrating a MAC CE indicating a target SSB in a packet manner in an embodiment of the present invention;

FIG. 11 is a diagram illustrating a binary value used by a MAC CE to directly indicate a target SSB in an application example;

fig. 12 is a schematic structural diagram of a UCI according to an embodiment of the present invention;

fig. 13 is a flowchart illustrating a beam determination method in a second data transmission according to an embodiment of the present invention;

fig. 14 is a schematic structural diagram of a beam determining apparatus in the first data transmission according to an embodiment of the present invention;

fig. 15 is a schematic structural diagram of a beam determination apparatus in the second data transmission according to an embodiment of the present invention.

Detailed Description

As known in the background art, LTE supports IDLE (IDLE) state for transmitting data on preconfigured uplink resources. The base station may configure, in a connected state, a preconfigured uplink Resource for the UE to enter an idle state for data transmission through a Radio Resource Control (RRC) connection release message, and the base station may update the preconfigured Resource. After the UE performs data transmission on the preconfigured uplink resource, the UE needs to monitor a corresponding response window to receive a response message sent by the base station.

In the prior art version R15, NR introduces Inactive (Inactive) state, and when UE has no data to transmit or receive, the base station may instruct UE to perform Inactive state. The behavior of the UE in the Inactive state is the same as that in the IDLE (IDLE) state, and at this time, the UE does not monitor the PDCCH, does not perform measurement, and only performs the behaviors of detecting a reference signal, reselecting a cell, monitoring a paging (paging)/System Information (SI), and the like. The difference between the Inactive state and the idle state of the UE is as follows: in the Inactive state, the base station and the UE both store the context of the UE for receiving and transmitting data, and when data needs to be received and transmitted again, the UE can perform fast recovery (resume) through the RACH procedure without performing operations such as activation operation of the security mode, capability reporting, information configuration, and the like again. Therefore, the signaling interaction process when the UE is switched to the activated state is simplified, the signaling overhead is reduced, and the power consumption of the UE is reduced.

In the R16 version, the UE is not supported to transmit data in the Inactive state on the user plane, and if the UE has data to transmit, the UE needs to switch to the connected state for transmission. Through the RRC Resume procedure, the RRC Resume can be quickly completed through the 4-step RACH and the 2-step RACH procedures, at this time, the UE sends a Resume message to the base station, where the Resume message may be an RRC Resume Request (RRC Resume Request shown in fig. 1 to 4), and the base station receives the RRC Resume Request, and the corresponding response message is as follows: referring to fig. 1 to 4, fig. 1 to 4 are schematic diagrams illustrating four (a first case, a second case, a third case and a fourth case) after a UE sends an RRC connection resume message to a Network (Network) or a base station in the prior art; if the recovery success (RRC Resume shown in fig. 1) is returned to the UE, the UE enters a connected state; the base station may also reply to the RRC connection establishment success (RRC Setup shown in fig. 2), that is, the RRC connection returns to the RRC connected state (connection), and the UE enters the connected state; if the base station replies with an RRC Release message (RRC Release with Suspend Configuration shown in fig. 3) containing the Suspend Configuration, the UE still stays in Inactive state; if the network rejects the RRC recovery request, a Reject message (RRC Reject shown in fig. 4) may be returned and the UE is still in the Inactive state.

In NR, multi-beam (beam) operation is supported, each beam corresponding to a Synchronization Signal and PBCH block (SSB) and capable of accessing a user terminal (UE). The base station indicates the association relationship between the Random Access resource and the SSB through the system information, the UE firstly measures the downlink reference signal, selects a proper SSB for residence, the UE transmits a preamble (preamble) on the selected SSB-associated Physical Random Access Channel (PRACH) resource, the base station can determine the proper SSB of the user terminal according to the association relationship between the Random Access resource and the SSB by detecting the preamble transmitted on the corresponding PRACH time-frequency domain resource, and the SSB is used for transmitting the Random Access response.

Currently, 3GPP can perform small packet transmission by UE in Inactive state through a stand item of R17 small packet transmission. In the immediately preceding paragraph, it is described to support data transmission on pre-configured uplink resources. Since the configured grant supported by the NR is mainly used in a scenario of Ultra Reliable Low Latency Communications (URLLC), and only supports use in a connected state, both the base station and the UE know the SSB where the UE resides, the base station can know which SSB sends a response message to the UE after the UE sends uplink data.

NR supports Semi-Persistent Scheduling (SPS) for downlink data transmission, and a base station configures the SPS specifically including parameters such as a period, an HARQ process, and an MCS according to a service specification of a UE. The base station performs SPS activation through a Physical Downlink Control Channel (PDCCH for short), the PDCCH scheduling resource is a subsequent transmission resource, and the base station can update the scheduling resource through the PDCCH and also can deactivate the SPS resource through the PDCCH.

NR supports a Configured Grant (Configured Grant) for uplink data transmission. The base station pre-configures resources in advance or activates the pre-configured resources through the PDCCH, including a period, time-frequency domain resources, retransmission (retransmission) information, a Modulation and Coding Scheme (MCS for short), and the like. And the UE transmits data on the corresponding resources according to the configuration.

However, in the prior art, the base station cannot determine which SSB is used to reply the response message to the UE in the non-connected state, and if all available SSBs are used to send the response message to the UE, unnecessary resource waste is caused, and power consumption of the base station is increased.

To solve the problem, an embodiment of the present invention provides a method for determining a beam during data transmission, where the method includes: determining a target SSB for responding to the data transmission; sending uplink data to a base station, and indicating the target SSB when sending the uplink data, so that the base station sends response information responding to the uplink data by using the target SSB; wherein, the SSBs correspond to the beams one to one.

By the method, the base station can send the response message to the UE on the target SSB according to the indication of the UE, thereby avoiding unnecessary resource waste and saving the power consumption of the base station.

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.

Referring to fig. 5, an embodiment of the present invention provides a first method for determining a beam during data transmission, where the method includes:

step S501, determining a target SSB for responding to data transmission;

step S502, sending uplink data to a base station, and indicating the target SSB when sending the uplink data, so that the base station sends response information responding to the uplink data by using the target SSB;

wherein, the SSBs correspond to the beams one to one.

The beam determination method at the time of data transmission shown in fig. 5 may be performed by the UE side in NR communication. When the UE sends uplink data to the base station, the indication information of the target SSB used by the base station to respond to data transmission of the UE is sent together with the uplink data (for example, the indication information may be integrated in the uplink data or independent from the uplink data).

Alternatively, the UE may determine a suitable SSB as the target SSB by measuring the downlink reference signal.

Optionally, the uplink data is data transmitted by the UE to the network side (or the base station) on the PUR.

Optionally, the UE in the Inactive state indicates the target SSB when sending the uplink data, and at this time, the UE may select the camped SSB as the target SSB according to the signal strength and the like corresponding to each beam (beam).

By the scheme of the embodiment, when the UE sends the uplink data to the network side, the target SSB is indicated, and then the base station can directly send the response message corresponding to the uplink data to the UE through the target SSB without sending the response message to all the SSBs configured in the base station, thereby avoiding unnecessary resource waste and saving power consumption of the base station.

In an embodiment, please continue to refer to fig. 5, the step S502 of indicating the target SSB when sending the uplink data includes: when the uplink data is sent, the target SSB is indirectly indicated through a Demodulation Reference Signal (DMRS) resource associated with the uplink data and a preset mapping relation, wherein the preset mapping relation comprises a one-to-one correspondence relation between the DMRS resource and the SSB.

The preset mapping relationship is the mapping relationship between a plurality of SSBs configured by the base station and the DMRS resource, and the preset mapping relationship is consistent between the base station and the UE. The UE can associate the DMRS resource corresponding to the target SSB to indicate the target SSB when transmitting the uplink data through the preset mapping relation, and the base station can decode the target SSB indicated by the UE according to the DMRS resource managed by the uplink data and the preset mapping relation when decoding the uplink data transmitted by the UE.

Optionally, when the uplink data is sent, the target SSB is indirectly indicated through a preset mapping relationship and DMRS resources associated with the uplink data, where the method includes: determining a target DMRS resource corresponding to the target SSB according to the target SSB and a preset mapping relation; and when the uplink data is sent, using the DMRS resource corresponding to the target SSB to correlate the uplink data.

The specific step of the UE indicating the target SSB when sending the uplink data may include: after the target SSB is determined, corresponding DRMS resources are used for associating uplink data on uplink resources pre-configured for the UE by the base station, the base station can determine the target SSB indicated by the UE after decoding the DRMS resources of the uplink data, and response messages are sent to the UE by the target SSB.

Optionally, the DMRS resource is a DMRS sequence (sequence) and/or a DMRS port (port).

The DMRS resources may be DMRS sequence resources or DMRS port resources, or resources in which DMRS sequences and DMRS ports are combined. According to the number of SSBs transmitted by a cell, DMRS sequences can be set to correspond to the SSBs one to one; or corresponding to SSB one by one through DMRS ports; or the DMRS sequences and the DMRS ports are combined to be in one-to-one correspondence with the SSBs.

Optionally, if the number of SSBs transmitted by the base station is small, the preset mapping relationship may correspond to different SSBs through the DMRS sequence or the DMRS port.

Referring to fig. 6, fig. 6 is a schematic diagram illustrating a preset mapping relationship between a DMRS sequence or a port and an SSB in an application example; when the DMRS sequences correspond to different SSBs, for example, if the base station transmits 4 SSBs (referred to as SSBs 0, SSBs 1, SSBs 2, and SSBs 3), the preset mapping relationship may indicate that 4 different DMRS sequences (DMRS sequence 0, DMRS sequence 1, DMRS sequence 2, and DMRS sequence 3) need to be used for corresponding to different SSBs. For example, DMRS sequence 0 corresponds to SSB0, DMRS sequence 1 corresponds to SSB1, DMRS sequence 2 corresponds to SSB2, and DMRS sequence 3 corresponds to SSB 3.

In fig. 6, when DMRS ports correspond to different SSBs, for example, the preset mapping relationship may indicate that 4 DMRS port numbers (DMRS port0, DMRS port 1, DMRS port 2, and DMRS port3) correspond to different SSBs, DMRS port0 corresponds to SSB0, DMRS port 1 corresponds to SSB1, DMRS port 2 corresponds to SSB2, and DMRS port3 corresponds to SSB 3.

In the above two examples of the preset mapping relationship, when the UE determines the SSB targeted by the SSB2, the UE transmits uplink data on the preconfigured time-frequency domain resource by using the DMRS sequence 2 or DMRS port 2.

Optionally, if the number of SSBs is large, the preset mapping relationship may correspond to different SSBs in a manner of combining the DMRS sequence and the DMRS port, and the predetermined mapping relationship may be ordered according to the sequence of the DMRS sequence and then the DMRS port, or ordered according to the sequence of the DMRS port and then the DMRS sequence.

Referring to fig. 7, fig. 7 is a schematic diagram illustrating a preset mapping relationship between DMRS sequences and port combinations and SSBs in an application example; if the base station transmits 16 SSBs (SSB0, SSB1, …, SSB15), for example, 8 DMRS sequences (DMRS sequence 0, DMRS sequence 1, …, DMRS sequence 7) and 2 DMRS ports (DMRS port0 and DMRS port 1) are configured, the preset mapping relationship may indicate that DMRS sequence 0 and DMRS port0 correspond to SSB0, DMRS sequence 0 and DMRS port 1 correspond to SSB1, DMRS sequence 1 and DMRS port0 correspond to SSB2, and DMRS sequence 1 and DMRS port 1 correspond to SSB3 …. At this time, if the target SSB determined by the UE is SSB2, the UE transmits DMRS port0 by using DMRS sequence 1 to associate uplink data on the time-frequency resource configured to the UE, corresponding to DMRS sequence 1 and DMRS port 0.

In addition, the preset relationship may also indicate that DMRS sequence 0 and DMRS port0 correspond to SSB0, DMRS sequence 1 and DMRS port0 correspond to SSB1, and DMRS sequence 2 and DMRS port0 correspond to SSB2 …. At this time, if the target SSB determined by the UE is SSB2, the UE transmits DMRS port0 by using DMRS sequence 2 to associate uplink data with the DMRS sequence 2 on the time-frequency resource configured to the UE, corresponding to the DMRS port0 and the DMRS sequence 2.

In this embodiment, the preset mapping relationship between the DMRS resource and the SSB may be a mapping relationship between the DMRS sequence and the SSB, or a mapping relationship between the DMRS port and the SSB, or a mapping relationship between the DMRS sequence and the DMRS port combined together and the SSB, so that the UE indicates the target SSB when transmitting uplink data through the DMRS resource.

In an embodiment, the method for determining a beam during data transmission may further include: and receiving system information or dedicated RRC signaling to acquire DMRS resource configuration and the preset mapping relation.

Specifically, the network side (or the base station) may indicate, through system information or Radio Resource Control (RRC for short) signaling dedicated to the UE, the DMRS Resource configured by the base station and a preset mapping relationship between the DMRS Resource and the SSB. For example, the base station indicates a preset mapping relationship between the DMRS resource and the SSB in an RRC signaling that indicates the UE to enter an Inactive state and configures dedicated preconfigured uplink resources for the UE.

Optionally, the base station may further indicate, in the Remaining Minimum System Information (RMSI), that the cell starts a transmission function of the preconfigured uplink resource, configure the DMRS resource, and indicate a preset mapping relationship between the DMRS resource and the SSB.

In one embodiment, please continue to refer to fig. 5, step S502 indicates the target SSB when sending uplink data, including: and when sending the uplink data, directly indicating the target SSB by using a reporting signaling.

In step S502, the UE may indicate the target SSB when sending the uplink data, and may report the target SSB while sending the uplink data on the preconfigured uplink resource.

Optionally, the reporting signaling may include an index of the target SSB, so that the base station determines the target SSB according to the index. That is, the network side (or the base station) and the UE side unify a set of SSB indexing mechanism, so as to indicate the corresponding SSB through the SSB index.

Optionally, the reported signaling is carried in a Media Access Control-Control Element (MAC-CE) or Uplink Control information (Uplink Control Link, UCI).

Wherein, a MAC CE is newly defined for bearing the index of the target SSB to indicate the target SSB determined by the UE. The length of the MAC CE may be determined according to the number of SSBs configured by the base station or the number of SSBs supported by the cell. The newly defined MAC CE and uplink data to be transmitted by the UE are multiplexed on the pre-configured uplink resource for transmission, and a new logical channel identifier (logical channel identifier, abbreviated as LCID) is reserved for identifying the MAC CE.

Optionally, the newly defined MAC CE and uplink data to be transmitted by the UE are multiplexed on the preconfigured uplink resource for transmission.

For example: transmitting less than 8 or less than 16 SSBs may indicate the target SSBs determined by the UE with a MAC CE of fixed length 8 bits (bits) or 16bits, each bit (bit) representing an SSB, which may correspond to the sequential SSBs from low to high or from high to low. When the corresponding bit is set to 1, the SSB of the corresponding index is indicated as the target SSB. Referring to fig. 8, fig. 8 is a diagram illustrating an application example using 8-bit MAC CE to indicate a target SSB, where the bits from low to high indicate the corresponding SSB, and if SSB2 is the target SSB, the value of the bit of the corresponding SSB2 is set to 1. Referring to fig. 9, fig. 9 is a diagram illustrating an application example using a 16-bit MAC CE to indicate a target SSB, where if SSB2 is the target SSB, the bit value of the corresponding SSB2 is set to 1, and the remaining bits are all set to 0.

Optionally, when the number of SSBs transmitted by the base station is more than 8, a grouping manner may be adopted, where the number of SSBs in each group is 8, two rows may be used to represent the index of the SSBs transmitted by the base station, a first row identifies a group (group) identifier, and a second row identifies the SSB position in the group (represented by SSBxN, where N is 0,1,2, … 7, which respectively represents 8 SSBs in a group). And the SSB indexes in each group are arranged from small to large, and the UE determines the corresponding group where the corresponding SSB is located and the position in the group according to the index of the target SSB and determines the setting of the bit of the MAC CE. Referring to fig. 10, fig. 10 is a diagram illustrating a MAC CE indicating a target SSB in a packet manner in an application example; if the target SSB index determined by the UE is SSB28, 28mode 8 is 3 to 4, so the SSBx3 positions of the corresponding group3 are all set to 1, and the rest bits are all set to 0.

Optionally, the index of the target SSB may also be directly indicated by a number of bytes (bits), for example, 16 SSBs, i.e., "0000-1111", may be corresponding to a binary value of 4 bits, or 64 SSBs, i.e., "000000-111111", may be corresponding to a binary value of 6 bits. The number of bits required is not limited herein and is applicable to any range of bit (bit) numbers. For a specific MAC CE format, see fig. 11, where fig. 11 is a schematic diagram of an application example in which a MAC CE directly indicates a target SSB by using a binary value; the MAC CE shown in the figure totally includes 8 bits, the SSB index (index) is indicated by 6bits, the other 2 bits are reserved bits (i.e., R bits in the figure), and if the target SSB index determined by the UE is SSB8, the corresponding SSB index (index) is set to 000111. The number of bits required by the SSB index depends on the number of SSBs transmitted by the base station, and the location of the MAC CE where the corresponding bit is located is not limited herein. In addition, the UE also indicates the appropriate SSB for the UE through UCI when transmitting uplink data on the preconfigured uplink resource. The base station decodes the received uplink data in the preconfigured uplink resources, determines a target SSB through the setting of UCI, and sends a downlink response message to the UE by using the target SSB.

Optionally, a UCI is embedded in a header (head) sent by the pre-configured resource, and is used for carrying an index of the target SSB to indicate the target SSB. The byte length of the Data (Data) in the UCI depends on the number of SSBs transmitted by the base station. Referring to fig. 12, fig. 12 provides a schematic structural diagram of a UCI; for example, if the base station transmits 8 SSBs, the SSB index can be identified by a binary value of 3 bits; if SSB3 is the target SSB determined by the UE, the corresponding 3bits should be set to "011". If the base station transmits 64 SSBs, the SSB index can be identified by a binary value of 6 bits. If SSB3 is the appropriate SSB for the UE, then the corresponding 6bits should be set to "000011".

In this embodiment, the UE may also directly indicate the target SSB in the uplink data sent to the base station through the report signaling, so that the base station determines the target SSB according to the decoded uplink data and sends a downlink response message to the UE through the target SSB. The reporting signaling can be carried by the MACCE or UCI.

Referring to fig. 13, an embodiment of the present invention further provides a second method for determining a beam during data transmission, where the second method for determining a beam during data transmission may be performed by a network side (or a base station side), and the method includes the following steps:

step S1301, receiving uplink data sent by UE, and determining a target SSB for responding to data transmission according to the uplink data;

step S1302, sending response information in response to the uplink data by using the target SSB;

wherein, the SSBs correspond to the beams one to one.

Optionally, the determining, according to the uplink data sent by the UE, a target SSB for responding to data transmission includes: and determining the DMRS resource associated with the uplink data, and determining the target SSB corresponding to the DMRS resource associated with the uplink data through a preset mapping relation, wherein the preset mapping relation comprises a one-to-one correspondence relation between the DMRS resource and the SSB.

Optionally, the DMRS resource is a DMRS sequence and/or a DMRS port.

Optionally, the method further includes: and indicating the DMRS resource configuration and the preset mapping relation through system information or dedicated RRC signaling sent to the UE.

Optionally, the determining, by the uplink data sent by the UE, a target SSB for responding to data transmission includes: and determining the target SSB according to the reporting signaling.

Optionally, the reporting signaling is carried in a medium access control unit or uplink control information.

For more contents of the working principle and the working mode of the beam determination method during data transmission in fig. 13, reference may be made to the related descriptions on the network side or the base station side in fig. 5 to fig. 12, which are not described again here.

Referring to fig. 14, an embodiment of the present invention provides a schematic structural diagram of a beam determining apparatus for data transmission, where the apparatus includes:

a target SSB determination module 1401 for determining a target SSB for responding to the data transmission;

an uplink data sending module 1402, configured to send uplink data to a base station, and indicate the target SSB when sending the uplink data, so that the base station sends response information responding to the uplink data by using the target SSB;

wherein, the SSBs correspond to the beams one to one.

For more details of the working principle and working mode of the beam determination apparatus during the first data transmission, reference may be made to the related description in fig. 5, and details are not repeated here.

Referring to fig. 15, an embodiment of the present invention further provides a beam determining apparatus for a second data transmission, where the apparatus includes:

an uplink data receiving module 1501, configured to receive uplink data sent by a UE, where the UE indicates a target SSB for responding to data transmission when sending the uplink data;

a response module 1502, configured to send response information in response to the uplink data by using the target SSB;

wherein, the SSBs correspond to the beams one to one.

For more details of the working principle and working mode of the beam determination apparatus in the second data transmission, reference may be made to the related description in fig. 13, and details are not repeated here.

It should be noted that the technical solution of the present invention is applicable to 5G communication systems, 4G, 3G communication systems, and various future communication systems, such as 6G, 7G, etc.

Embodiments of the present invention further provide a storage medium, on which computer instructions are stored, and when the computer instructions are executed, the method of fig. 5 or fig. 13 is performed. The storage medium may be a computer-readable storage medium, and may include, for example, a non-volatile (non-volatile) or non-transitory (non-transitory) memory, and may further include an optical disc, a mechanical hard disk, a solid state hard disk, and the like.

Specifically, in the embodiment of the present invention, the processor may be a Central Processing Unit (CPU), and the processor may also be other general-purpose processors, Digital Signal Processors (DSPs), Application Specific Integrated Circuits (ASICs), Field Programmable Gate Arrays (FPGAs) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, and the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

It will also be appreciated that the memory in the embodiments of the subject application can be either volatile memory or nonvolatile memory, or can include both volatile and nonvolatile memory. The nonvolatile memory may be a read-only memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), or a flash memory. Volatile memory can be Random Access Memory (RAM), which acts as external cache memory. By way of example and not limitation, many forms of Random Access Memory (RAM) are available, such as Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (enhanced SDRAM), SDRAM (SLDRAM), synchlink DRAM (SLDRAM), and direct bus RAM (DR RAM).

The embodiment of the present invention further provides a UE, which includes a memory and a processor, where the memory stores computer instructions capable of running on the processor, and the processor executes the computer instructions to perform the steps of the method shown in fig. 5. The terminal includes, but is not limited to, a mobile phone, a computer, a tablet computer and other terminal devices.

Specifically, a terminal in this embodiment may refer to various forms of User Equipment (UE), an access terminal, a subscriber unit, a subscriber station, a mobile station (mobile station, MS), a remote station, a remote terminal, a mobile device, a user terminal, a terminal device (terminal device), a wireless communication device, a user agent, or a user equipment. The terminal device may also be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device with a Wireless communication function, a computing device or other processing devices connected to a Wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a future 5G Network or a terminal device in a future evolved Public Land Mobile Network (PLMN), and the like, which is not limited in this embodiment.

The embodiment of the present invention further provides a base station, which includes a memory and a processor, where the memory stores computer instructions capable of being executed on the processor, and the processor executes the computer instructions to execute the steps of the method shown in fig. 13.

A Base Station (BS) in the embodiment of the present application, which may also be referred to as a base station device, is a device deployed in a Radio Access Network (RAN) to provide a wireless communication function. For example, a device providing a base station function in a 2G network includes a Base Transceiver Station (BTS), a device providing a base station function in a 3G network includes a node b (nodeb), apparatuses for providing a base station function in a 4G network include evolved node bs (enbs), which, in a Wireless Local Area Network (WLAN), the devices providing the base station function are an Access Point (AP), a device gNB providing the base station function in a New Radio (NR) of 5G, and a node B (ng-eNB) continuing to evolve, the gNB and the terminal communicate with each other by adopting an NR (NR) technology, the ng-eNB and the terminal communicate with each other by adopting an E-UTRA (evolved Universal Terrestrial Radio Access) technology, and both the gNB and the ng-eNB can be connected to a 5G core network. The base station in the embodiment of the present application also includes a device and the like that provide a function of the base station in a future new communication system.

The base station controller in the embodiment of the present application is a device for managing a base station, for example, a Base Station Controller (BSC) in a 2G network, a Radio Network Controller (RNC) in a 3G network, or a device for controlling and managing a base station in a future new communication system.

The network on the network side in the embodiment of the present invention refers to a communication network providing communication services for a terminal, and includes a base station of a radio access network, a base station controller of the radio access network, and a device on the core network side.

Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.