阅读说明：本技术 一种终端单双天线发射自适应控制方法和装置 (Terminal single-double antenna transmission self-adaptive control method and device ) 是由 鲜柯 张光伟 王亮 黄伟 于 2018-05-28 设计创作，主要内容包括：本发明提供了一种终端单双天线发射自适应控制方法和装置,该方法包括：检测确定终端的上下行信道质量；根据终端的上下行信道质量判断终端是否需要切换天线发射模式；当判断终端需要切换天线发射模式时,通知终端最新的天线发射模式,并根据最新的天线发射模式执行针对该终端的调度优化。本发明能够兼顾LTE终端耗电性能和上行覆盖性能,同时能够提高双天线发射模式的性能增益。(The invention provides a self-adaptive control method and a device for single-antenna and double-antenna transmission of a terminal, wherein the method comprises the following steps: detecting and determining the quality of uplink and downlink channels of the terminal; judging whether the terminal needs to switch the antenna transmission mode according to the quality of the uplink and downlink channels of the terminal; and when the terminal needs to switch the antenna transmission mode, informing the terminal of the latest antenna transmission mode, and executing scheduling optimization aiming at the terminal according to the latest antenna transmission mode. The invention can give consideration to the power consumption performance and the uplink coverage performance of the LTE terminal and can improve the performance gain of the dual-antenna transmission mode.)

1. A terminal single-double antenna transmission self-adaptive control method is applied to a base station, and is characterized in that the method comprises the following steps:

detecting and determining the quality of uplink and downlink channels of the terminal;

judging whether the terminal needs to switch the antenna transmission mode according to the quality of the uplink and downlink channels of the terminal;

and when the terminal needs to switch the antenna transmission mode, informing the terminal of the latest antenna transmission mode, and executing scheduling optimization aiming at the terminal according to the latest antenna transmission mode.

2. the method of claim 1,

and when the terminal does not need to switch the day transmission mode, informing the terminal of the current antenna transmission mode.

3. the method of claim 1,

the antenna transmission mode comprises a single antenna transmission mode and a double antenna transmission mode;

The method for judging whether the terminal needs to switch the antenna transmission mode according to the quality of the uplink and downlink channels of the terminal comprises the following steps:

when the terminal is in a single-antenna transmission mode currently, if the quality of uplink and downlink channels of the terminal is lower than the minimum quality requirement of the uplink and downlink channels corresponding to the single-antenna transmission mode, determining that the terminal needs to be switched to a latest double-antenna transmission mode, otherwise, determining that the terminal does not need to be switched to the antenna transmission mode;

when the terminal is in a dual-antenna transmission mode currently, if the quality of the uplink and downlink channels of the terminal is higher than the highest quality requirement of the uplink and downlink channels corresponding to the dual-antenna transmission mode, the terminal is determined to be required to be switched to the latest single-antenna transmission mode, otherwise, the terminal is determined not to be required to be switched to the antenna transmission mode.

4. the method of claim 3,

The method for detecting and determining the quality of the uplink and downlink channels of the terminal comprises the following steps: detecting an uplink channel quality measurement parameter of the terminal, and taking the detected uplink channel quality measurement parameter of the terminal as the uplink and downlink channel quality of the terminal; the uplink information quality measurement parameters comprise: an uplink signal to interference plus noise ratio (SINR), an uplink Reference Signal Received Power (RSRP), and/or a Channel Quality Indication (CQI);

When the uplink SINR of the terminal is smaller than a preset minimum SINR value, the uplink RSRP is smaller than a preset minimum RSRP value, and/or the uplink CQI is smaller than a preset minimum CQI value, determining that the uplink and downlink channel quality of the terminal is lower than the minimum uplink and downlink channel quality requirement corresponding to the single-antenna transmission mode;

And when the uplink SINR of the terminal is greater than the preset highest SINR value, the uplink RSRP is greater than the preset highest RSRP value, and/or the uplink CQI is greater than the preset highest CQI value, determining that the quality of the uplink and downlink channels of the terminal is higher than the quality requirement of the highest uplink and downlink channels corresponding to the dual-antenna transmission mode.

5. The method of claim 3,

when the terminal is informed of the latest single-antenna transmission mode, a first timer is further started;

When the terminal is informed of the latest double-antenna transmission mode, a second timer is further started;

after the terminal is judged to need to switch the antenna transmission mode, and before the terminal is informed of the latest antenna transmission mode, the method further comprises the following steps:

If the latest antenna transmission mode is a double-antenna transmission mode, if the first timer is not overtime, the current single-antenna transmission mode of the terminal is kept, and if the first timer is overtime, the first timer is closed and the terminal is informed of the latest antenna transmission mode;

If the latest antenna transmission mode is the single antenna transmission mode, if the second timer is not overtime, the current dual-antenna transmission mode of the terminal is kept, and if the second timer is overtime, the second timer is closed and the terminal is informed of the latest antenna transmission mode.

6. the method of claim 3,

The method for executing scheduling optimization aiming at the terminal according to the latest antenna transmission mode comprises the following steps:

if the latest antenna transmission mode is a single antenna transmission mode, keeping the current modulation and coding index MCS selection result;

and if the latest antenna transmission mode is a dual-antenna transmission mode, adjusting the current MCS selection result up by a preset step length.

7. the method of claim 2,

the method for informing the terminal of the latest antenna transmission mode comprises the following steps: informing the terminal of the latest antenna transmission mode through PDCCH DCI; or, the terminal is informed of the latest antenna transmission mode through an RRC message;

The method for informing the terminal of the current antenna transmission mode comprises the following steps: informing the current antenna transmission mode of the terminal to the terminal through PDCCH DCI; or, the terminal is informed of the current antenna transmission mode of the terminal through an RRC message.

8. A terminal single-double antenna transmission self-adaptive control device is applied to a base station, and is characterized in that the device comprises: the device comprises a detection unit, a judgment unit and a processing unit;

the detection unit is used for detecting and determining the quality of uplink and downlink channels of the terminal;

the judging unit is used for judging whether the terminal needs to switch the antenna transmitting mode according to the quality of the uplink and downlink channels of the terminal;

and the processing unit is used for informing the terminal of the latest antenna transmission mode and executing scheduling optimization aiming at the terminal according to the latest antenna transmission mode when the judging unit judges that the terminal needs to switch the antenna transmission mode.

9. the apparatus of claim 8,

and the processing unit is used for informing the terminal of the current antenna transmission mode when the judging unit judges that the terminal does not need to switch the day transmission mode.

10. the apparatus of claim 8,

The antenna transmission mode comprises a single antenna transmission mode and a double antenna transmission mode;

The judging unit is used for judging whether the terminal needs to switch the antenna transmitting mode according to the uplink and downlink channel quality of the terminal:

when the terminal is in a single-antenna transmission mode currently, if the quality of uplink and downlink channels of the terminal is lower than the minimum quality requirement of the uplink and downlink channels corresponding to the single-antenna transmission mode, determining that the terminal needs to be switched to a latest double-antenna transmission mode, otherwise, determining that the terminal does not need to be switched to the antenna transmission mode;

when the terminal is in a dual-antenna transmission mode currently, if the quality of the uplink and downlink channels of the terminal is higher than the highest quality requirement of the uplink and downlink channels corresponding to the dual-antenna transmission mode, the terminal is determined to be required to be switched to the latest single-antenna transmission mode, otherwise, the terminal is determined not to be required to be switched to the antenna transmission mode.

11. the apparatus of claim 10,

The detecting unit, when detecting and determining the quality of the uplink and downlink channel of the terminal, is configured to: detecting an uplink channel quality measurement parameter of the terminal, and taking the detected uplink channel quality measurement parameter of the terminal as the uplink and downlink channel quality of the terminal; the uplink information quality measurement parameters comprise: an uplink signal to interference plus noise ratio (SINR), an uplink Reference Signal Received Power (RSRP), and/or a Channel Quality Indication (CQI);

the judging unit is used for determining that the uplink and downlink channel quality of the terminal is lower than the minimum uplink and downlink channel quality requirement corresponding to the single-antenna transmission mode when the uplink SINR of the terminal is smaller than the preset minimum SINR value, the uplink RSRP is smaller than the preset minimum RSRP value and/or the uplink CQI is smaller than the preset minimum CQI value;

The judging unit is used for determining that the quality of the uplink and downlink channel of the terminal is higher than the highest uplink and downlink channel quality requirement corresponding to the dual-antenna transmission mode when the uplink SINR of the terminal is larger than the preset highest SINR value, the uplink RSRP is larger than the preset highest RSRP value and/or the uplink CQI is larger than the preset highest CQI value.

12. the apparatus of claim 10,

the processing unit is used for further starting a first timer when the terminal is informed of the latest single-antenna transmission mode;

The processing unit is used for further starting a second timer when informing the terminal of the latest double-antenna transmission mode;

The processing unit, after the determining unit determines that the terminal needs to switch the antenna transmission mode, and before notifying the terminal of the latest antenna transmission mode, is further configured to:

if the latest antenna transmission mode is a double-antenna transmission mode, if the first timer is not overtime, the current single-antenna transmission mode of the terminal is kept, and if the first timer is overtime, the first timer is closed and the terminal is informed of the latest antenna transmission mode;

if the latest antenna transmission mode is the single antenna transmission mode, if the second timer is not overtime, the current dual-antenna transmission mode of the terminal is kept, and if the second timer is overtime, the second timer is closed and the terminal is informed of the latest antenna transmission mode.

13. the apparatus of claim 10,

the processing unit, when performing scheduling optimization for the terminal according to the latest antenna transmission mode, is configured to:

if the latest antenna transmission mode is a single antenna transmission mode, keeping the current modulation and coding index MCS selection result;

and if the latest antenna transmission mode is a dual-antenna transmission mode, adjusting the current MCS selection result up by a preset step length.

14. The apparatus of claim 9,

The processing unit, when notifying the terminal of the latest antenna transmission mode, is configured to: informing the terminal of the latest antenna transmission mode through PDCCH DCI; or, the terminal is informed of the latest antenna transmission mode through an RRC message;

the processing unit, when notifying the current antenna transmission mode of the terminal, is configured to: informing the current antenna transmission mode of the terminal to the terminal through PDCCH DCI; or, the terminal is informed of the current antenna transmission mode of the terminal through an RRC message.

Technical Field

The invention relates to the technical field of communication, in particular to a self-adaptive control method and device for single-antenna and double-antenna transmission of a terminal.

background

LTE terminals support single antenna transmission and dual antenna transmission. The single-antenna transmission has the advantages of low power consumption of the terminal and small uplink coverage range of the terminal, and the double-antenna transmission has the advantages of large uplink coverage range of the terminal and high power consumption of the terminal. Therefore, no matter the LTE terminal starts single-antenna transmission or dual-antenna transmission by default, power consumption and coverage cannot be both considered.

If the LTE terminal adopts the adaptive selection single-antenna and dual-antenna transmission mode, the base station cannot distinguish whether the terminal adopts the single-antenna transmission mode or the dual-antenna transmission mode, so that the base station cannot timely cooperate with the dual-antenna transmission mode of the LTE terminal in terms of scheduling, for example, timely adjust MCS, thereby affecting uplink throughput and uplink coverage performance gain of the dual-antenna transmission mode.

disclosure of Invention

in view of the above, the present invention provides a method and an apparatus for adaptively controlling single-antenna and dual-antenna transmission of a terminal, which can improve performance gain of a dual-antenna transmission mode while taking power consumption performance and uplink coverage performance of an LTE terminal into consideration.

in order to achieve the purpose, the invention provides the following technical scheme:

A terminal single-double antenna transmission self-adaptive control method is applied to a base station, and comprises the following steps:

Detecting and determining the quality of uplink and downlink channels of the terminal;

Judging whether the terminal needs to switch the antenna transmission mode according to the quality of the uplink and downlink channels of the terminal;

and when the terminal needs to switch the antenna transmission mode, informing the terminal of the latest antenna transmission mode, and executing scheduling optimization aiming at the terminal according to the latest antenna transmission mode.

A terminal single-double antenna transmission self-adaptive control device is applied to a base station, and comprises: the device comprises a detection unit, a judgment unit and a processing unit;

the detection unit is used for detecting and determining the quality of uplink and downlink channels of the terminal;

The judging unit is used for judging whether the terminal needs to switch the antenna transmitting mode according to the quality of the uplink and downlink channels of the terminal;

and the processing unit is used for informing the terminal of the latest antenna transmission mode and executing scheduling optimization aiming at the terminal according to the latest antenna transmission mode when the judging unit judges that the terminal needs to switch the antenna transmission mode.

according to the technical scheme, the base station determines whether the terminal needs to switch the antenna transmission mode or not according to the uplink and downlink channel quality of the terminal by detecting the uplink and downlink channel quality of the terminal, and optimizes the scheduling when the terminal switches the antenna transmission mode. The mode that the base station controls the terminal to switch the antenna transmission mode according to the quality of the uplink and downlink channels of the terminal can give consideration to both the power consumption performance and the uplink coverage performance of the LTE terminal, and the base station can distinguish whether the terminal adopts a single-antenna transmission mode or a double-antenna transmission mode, so that the double-antenna transmission mode of the LTE terminal can be matched in time in scheduling, and the performance gain of the double-antenna transmission mode can be improved.

drawings

fig. 1 is a flow chart of a terminal single-dual antenna transmission adaptive control method according to an embodiment of the present invention;

Fig. 2 is a schematic structural diagram of a terminal single-antenna and dual-antenna transmission adaptive control device according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention are described in detail below with reference to the accompanying drawings according to embodiments.

Referring to fig. 1, fig. 1 is a flowchart of a single-antenna and dual-antenna transmission adaptive control method for a terminal according to an embodiment of the present invention, where the method is applied to a base station and mainly includes the following steps:

step 101, detecting and determining the quality of uplink and downlink channels of a terminal.

In practical applications, an uplink Signal to Interference plus Noise Ratio (SINR), an uplink Reference Signal Receiving Power (RSRP), and a Channel Quality Indicator (CQI) may all be used to measure the uplink and downlink Channel Quality of a terminal.

in the embodiment of the invention, the uplink SINR, the uplink RSRP and/or the uplink CQI of the terminal are/is used as the uplink channel quality measurement parameters of the terminal, the uplink channel quality measurement parameters of the terminal are detected, and the detected uplink channel quality measurement parameter values of the terminal are used as the uplink channel quality and the downlink channel quality of the terminal.

step 102, judging whether the terminal needs to switch the antenna transmission mode according to the quality of the uplink and downlink channels of the terminal, if so, executing step 103, and if not, executing step 104;

in the invention, the antenna transmission mode comprises a single antenna transmission mode and a double antenna transmission mode;

the specific method for judging whether the terminal needs to switch the antenna transmission mode according to the uplink and downlink channel quality of the terminal is as follows:

when the current antenna transmission mode of the terminal is a single antenna transmission mode, if the uplink and downlink channel quality of the terminal is lower than the minimum uplink and downlink channel quality requirement corresponding to the single antenna transmission mode, determining that the latest antenna transmission mode of the terminal is a double-antenna transmission mode, and the terminal needs to be switched to the latest double-antenna transmission mode, otherwise, determining that the terminal does not need to switch the antenna transmission mode and still keeps the current single-antenna transmission mode;

When the current antenna transmission mode of the terminal is a dual-antenna transmission mode, if the quality of the uplink and downlink channels of the terminal is higher than the highest quality requirement of the uplink and downlink channels corresponding to the dual-antenna transmission mode, the latest antenna transmission mode is determined to be a single-antenna transmission mode, the terminal needs to be switched to the latest single-antenna transmission mode, otherwise, the terminal does not need to be switched to the antenna transmission mode, and the current dual-antenna transmission mode is maintained.

wherein the content of the first and second substances,

when the uplink SINR of the terminal is less than the preset minimum SINR value, the uplink RSRP is less than the preset minimum RSRP value, and/or the uplink CQI is less than the preset minimum CQI value, it may be determined that the uplink and downlink channel quality of the terminal is lower than the minimum uplink and downlink channel quality requirement corresponding to the single antenna transmission mode.

when the uplink SINR of the terminal is greater than the preset highest SINR value, the uplink RSRP is greater than the preset highest RSRP value, and/or the uplink CQI is greater than the preset highest CQI value, it may be determined that the uplink and downlink channel quality of the terminal is higher than the highest uplink and downlink channel quality requirement corresponding to the dual-antenna transmission mode.

it should be noted that the preset lowest SINR value is smaller than the preset highest SINR value; the preset lowest RSRP value is smaller than the preset highest RSRP value; the preset lowest CQI value is smaller than the preset highest CQI value.

And 103, informing the terminal of the latest antenna transmission mode, and executing scheduling optimization aiming at the terminal according to the latest antenna transmission mode.

after receiving the latest antenna transmission mode notified by the base station, the terminal determines that the current antenna transmission mode of the terminal needs to be switched to the latest antenna transmission mode by comparing the antenna transmission mode notified by the base station with the current antenna transmission mode of the terminal, and executes corresponding antenna mode switching. And the base station can execute scheduling optimization on the terminal according to the latest antenna transmission mode of the terminal, so that the performance gain of the terminal in a dual-antenna transmission mode can be improved.

In the embodiment of the present invention, the method for performing scheduling optimization for the terminal according to the latest antenna transmission mode specifically includes:

If the latest antenna transmission mode is a single antenna transmission mode, keeping the current modulation and coding index MCS selection result;

And if the latest antenna transmission mode is a dual-antenna transmission mode, adjusting the current MCS selection result up by a preset step length.

Here, the current MCS selection result, i.e. the MCS selected according to the prior art method. The value range of the preset step length is [0, 10], preferably, the preset step length can be a default value: 2.

And step 104, informing the terminal of the current antenna transmission mode, or directly ending the process.

In this step 104, the following two embodiments can be implemented:

The first method comprises the following steps: and when the base station determines that the terminal does not need to switch the antenna transmission mode, the base station informs the terminal of the current antenna transmission mode of the terminal. After the terminal receives the notification, it is determined that antenna transmission mode switching is not required because the notified antenna transmission mode is the same as its current antenna transmission mode.

and the second method comprises the following steps: when the base station determines that the terminal does not need to switch the antenna transmission mode, the base station does not inform the current antenna transmission mode of the terminal, but directly ends the process, so that resource occupation can be avoided.

In the embodiment of the present invention shown in fig. 1, the terminal is notified of the latest antenna transmission mode and the terminal is notified of the current antenna transmission mode by using the same method, that is, both the latest antenna transmission mode and the current antenna transmission mode are notified by using PDCCH DCI or RRC message.

in particular, the amount of the solvent to be used,

the method for informing the terminal of the latest antenna transmission mode comprises the following steps: informing the terminal of the latest antenna transmission mode through PDCCH DCI; or, the terminal is informed of the latest antenna transmission mode through an RRC message;

The method for informing the terminal of the current antenna transmission mode comprises the following steps: informing the current antenna transmission mode of the terminal to the terminal through PDCCH DCI; or, the terminal is informed of the current antenna transmission mode of the terminal through an RRC message.

in the embodiment of the present invention shown in fig. 1, when the base station determines that the terminal needs to switch the antenna transmission mode according to the uplink and downlink channel quality of the terminal, the base station notifies the terminal of the latest antenna transmission mode, so that the terminal performs corresponding antenna transmission mode switching. Thus, when the quality of uplink and downlink channels of the terminal changes frequently, the antenna transmission mode of the terminal is also switched frequently.

In order to avoid frequent switching of the antenna transmission mode of the terminal caused by frequent changes of the uplink and downlink channel quality of the terminal, in the embodiment of the present invention, a first timer and a second timer are configured, where the first timer is used for timing the holding time of the single antenna transmission mode of the terminal, and the second timer is used for timing the holding time of the dual antenna transmission mode of the terminal.

In order to time the holding time of the single antenna transmission mode of the terminal, the base station needs to further start a first timer when informing the terminal of the latest single antenna transmission mode;

In order to time the holding time of the dual-antenna transmission mode of the terminal, the base station needs to further start a second timer when informing the terminal of the latest dual-antenna transmission mode;

Correspondingly, after the base station judges that the terminal needs to switch the antenna transmission mode, before the terminal is informed of the latest antenna transmission mode, whether the terminal is allowed to switch the antenna transmission mode needs to be further determined according to the latest antenna transmission mode of the terminal and the overtime states of the first timer and the second timer, if so, the terminal can be informed of the latest antenna transmission mode, if not, the current antenna transmission state of the terminal needs to be kept, and at this time, the operation of informing the terminal of the latest antenna transmission mode is not executed.

In particular, the amount of the solvent to be used,

if the latest antenna transmission mode is a dual-antenna transmission mode, the current antenna transmission mode of the terminal is a single-antenna transmission mode, whether the holding time of the single-antenna transmission mode of the terminal is long enough or not needs to be judged, whether the first timer is overtime or not needs to be judged, if the first timer is not overtime, the holding time of the single-antenna transmission mode of the terminal is short enough or not needs to be judged, the terminal cannot perform antenna transmission mode switching at this moment, the current single-antenna transmission mode of the terminal needs to be held, if the first timer is overtime, the holding time of the single-antenna transmission mode of the terminal needs to be long enough, the antenna transmission mode switching can be performed at this moment, and therefore, the first timer needs to be closed, and the latest antenna transmission mode of the terminal is informed.

if the latest antenna transmission mode is a single-antenna transmission mode, the current antenna transmission mode of the terminal is indicated to be a double-antenna transmission mode, at this time, whether the holding time of the double-antenna transmission mode of the terminal is long enough or not needs to be judged, whether the second timer is overtime or not needs to be judged, if the second timer is not overtime, the holding time of the double-antenna transmission mode of the terminal is not long enough, at this time, the terminal cannot perform antenna transmission mode switching, the current double-antenna transmission mode of the terminal needs to be held, and if the second timer is overtime, the holding time of the double-antenna transmission mode of the terminal needs to be long enough, at this time, the antenna transmission mode switching can be performed, so the second timer needs to be closed, and the latest antenna transmission mode of the terminal is informed.

The foregoing describes in detail a single-antenna and dual-antenna transmission adaptive control method for a terminal according to an embodiment of the present invention, and the present invention further provides a single-antenna and dual-antenna transmission adaptive control device for a terminal, which is described in detail below with reference to fig. 2.

referring to fig. 2, fig. 2 is a schematic structural diagram of a terminal single-antenna and dual-antenna transmission adaptive control apparatus according to an embodiment of the present invention, where the apparatus is applied to a base station, and as shown in fig. 2, the apparatus includes: a detection unit 201, a judgment unit 202, and a processing unit 203; wherein the content of the first and second substances,

a detecting unit 201, configured to detect and determine uplink and downlink channel quality of a terminal;

A judging unit 202, configured to judge whether the terminal needs to switch an antenna transmission mode according to the quality of uplink and downlink channels of the terminal;

and the processing unit 203 is configured to notify the terminal of the latest antenna transmission mode when the judging unit 202 judges that the terminal needs to switch the antenna transmission mode, and perform scheduling optimization for the terminal according to the latest antenna transmission mode.

in the device shown in figure 2 of the drawings,

The processing unit 203 is configured to notify the terminal of the current antenna transmission mode when the determining unit 202 determines that the terminal does not need to switch the antenna transmission mode.

in the device shown in figure 2 of the drawings,

The antenna transmission mode comprises a single antenna transmission mode and a single antenna transmission mode;

the judging unit is used for judging whether the terminal needs to switch the antenna transmitting mode according to the uplink and downlink channel quality of the terminal:

when the terminal is in a single-antenna transmission mode currently, if the quality of uplink and downlink channels of the terminal is lower than the minimum quality requirement of the uplink and downlink channels corresponding to the single-antenna transmission mode, determining that the terminal needs to be switched to a latest double-antenna transmission mode, otherwise, determining that the terminal does not need to be switched to the antenna transmission mode;

when the terminal is in a dual-antenna transmission mode currently, if the quality of the uplink and downlink channels of the terminal is higher than the highest quality requirement of the uplink and downlink channels corresponding to the dual-antenna transmission mode, the terminal is determined to be required to be switched to the latest single-antenna transmission mode, otherwise, the terminal is determined not to be required to be switched to the antenna transmission mode.

In the device shown in figure 2 of the drawings,

the detecting unit 201, when detecting and determining the quality of the uplink and downlink channels of the terminal, is configured to: detecting an uplink channel quality measurement parameter of the terminal, and taking the detected uplink channel quality measurement parameter of the terminal as the uplink and downlink channel quality of the terminal; the uplink channel quality measurement parameters include: an uplink signal to interference plus noise ratio (SINR), an uplink Reference Signal Received Power (RSRP), and/or a Channel Quality Indication (CQI);

The determining unit 202 is configured to determine that the uplink and downlink channel quality of the terminal is lower than the minimum uplink and downlink channel quality requirement corresponding to the single-antenna transmission mode when the uplink SINR of the terminal is smaller than the preset minimum SINR value, the uplink RSRP is smaller than the preset minimum RSRP value, and/or the uplink CQI is smaller than the preset minimum CQI value;

the determining unit 202 is configured to determine that the quality of the uplink and downlink channel of the terminal is higher than the highest uplink and downlink channel quality requirement corresponding to the dual-antenna transmission mode when the uplink SINR of the terminal is greater than the preset highest SINR value, the uplink RSRP is greater than the preset highest RSRP value, and/or the uplink CQI is greater than the preset highest CQI value.

In the device shown in figure 2 of the drawings,

The processing unit 203 further starts a first timer when notifying the terminal of the latest single-antenna transmission mode;

the processing unit 203 further starts a second timer when notifying the terminal of the latest dual-antenna transmission mode;

after the determining unit 202 determines that the terminal needs to switch the antenna transmission mode, and before notifying the terminal of the latest antenna transmission mode, the processing unit 203 is further configured to:

if the latest antenna transmission mode is a double-antenna transmission mode, if the first timer is not overtime, the current single-antenna transmission mode of the terminal is kept, and if the first timer is overtime, the first timer is closed and the terminal is informed of the latest antenna transmission mode;

if the latest antenna transmission mode is the single antenna transmission mode, if the second timer is not overtime, the current dual-antenna transmission mode of the terminal is kept, and if the second timer is overtime, the second timer is closed and the terminal is informed of the latest antenna transmission mode.

in the device shown in figure 2 of the drawings,

The processing unit 203, when performing scheduling optimization for the terminal according to the latest antenna transmission mode, is configured to:

if the latest antenna transmission mode is a single antenna transmission mode, keeping the current modulation and coding index MCS selection result;

and if the latest antenna transmission mode is a dual-antenna transmission mode, adjusting the current MCS selection result up by a preset step length.

In the device shown in figure 2 of the drawings,

the processing unit 203, when notifying the terminal of the latest antenna transmission mode, is configured to: informing the terminal of the latest antenna transmission mode through PDCCH DCI; or, the terminal is informed of the latest antenna transmission mode through an RRC message;

The processing unit 203, when notifying the terminal of the current antenna transmission mode, is configured to: informing the current antenna transmission mode of the terminal to the terminal through PDCCH DCI; or, the terminal is informed of the current antenna transmission mode of the terminal through an RRC message.

according to the technical scheme, the base station detects the quality of the uplink and downlink channels of the terminal, controls the terminal to switch the antenna transmission mode according to the detection result, so that the power consumption performance and the uplink coverage performance of the terminal are considered, and schedules and optimizes the terminal according to the latest antenna transmission mode of the terminal, so that the performance gain can be improved when the terminal adopts a dual-antenna transmission mode.

the above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.