CN117676671A

CN117676671A - Antenna determining method and device, electronic equipment and storage medium

Info

Publication number: CN117676671A
Application number: CN202211035668.0A
Authority: CN
Inventors: 黄河清
Original assignee: Beijing Xiaomi Mobile Software Co Ltd
Current assignee: Beijing Xiaomi Mobile Software Co Ltd
Priority date: 2022-08-26
Filing date: 2022-08-26
Publication date: 2024-03-08

Abstract

The disclosure relates to a method and a device for determining an antenna, electronic equipment and a storage medium, and relates to the field of wireless communication. Firstly, respectively transmitting sounding reference signals to a base station through the plurality of antennas, then acquiring antenna indication information transmitted by the base station according to the sounding reference signals, and finally determining an uplink transmitting antenna of the terminal according to the antenna indication information. By adopting the scheme, the uplink transmitting antenna with optimal uplink signal quality can be accurately determined from a plurality of antennas of the terminal, the uplink channel performance of wireless communication is improved, and the user experience is improved.

Description

Antenna determining method and device, electronic equipment and storage medium

Technical Field

The disclosure relates to the field of wireless communication, and in particular relates to a method and a device for determining an antenna, electronic equipment and a storage medium.

Background

Because the transmitting power of the terminal is limited, the coverage performance of the uplink direction from the terminal to the base station is generally poorer than the coverage performance of the downlink direction from the base station to the terminal, and in the related art, the terminal can select the antenna with the best downlink reference signal quality from a plurality of antennas of the terminal as an uplink transmitting antenna according to the downlink channel quality. However, the accuracy of the uplink transmitting antenna selected by the method is not high, the optimal uplink signal quality cannot be obtained, and the user experience is affected.

Disclosure of Invention

In order to overcome the problems in the related art, the present disclosure provides a method, an apparatus, an electronic device, and a storage medium for selecting an antenna.

According to a first aspect of embodiments of the present disclosure, there is provided a method for determining an antenna, the method being applied to a terminal including a plurality of antennas, the method including:

transmitting sounding reference signals to a base station through the plurality of antennas respectively, wherein the sounding reference signals are used for estimating the quality of an uplink channel;

acquiring antenna indication information issued by the base station according to the sounding reference signal;

and determining an uplink transmitting antenna of the terminal according to the antenna indication information.

Optionally, the method further comprises:

receiving antenna round-robin configuration information issued by the base station;

the transmitting the sounding reference signal to the base station through the plurality of antennas respectively includes:

and transmitting the sounding reference signal through at least one target antenna in the plurality of antennas in turn according to the antenna round trip configuration information, wherein the antenna round trip configuration information is used for indicating the at least one target antenna transmitting the sounding reference signal each time.

Optionally, the antenna indication information includes downlink control information, the downlink control information includes an antenna indication field, the antenna indication field is used for indicating an uplink transmitting antenna of the terminal, and determining, according to the antenna indication information, the uplink transmitting antenna of the terminal from the multiple antennas includes:

And taking the antenna indicated in the antenna indication field of the downlink control information as the uplink transmitting antenna.

Optionally, the antenna indication information includes a radio resource control message, where the radio resource control message includes a preset reserved field, where the preset reserved field is used to indicate an uplink transmitting antenna of the terminal, and determining, according to the antenna indication information, the uplink transmitting antenna of the terminal from the multiple antennas includes:

and taking the antenna indicated in the preset reserved field of the radio resource control message as the uplink transmitting antenna.

Optionally, the preset reserved field includes a Dummy field.

According to a second aspect of embodiments of the present disclosure, there is provided a method for determining an antenna, the method being applied to a base station, the method comprising:

receiving sounding reference signals respectively sent by a terminal through a plurality of antennas, wherein the sounding reference signals are used for estimating the quality of an uplink channel;

determining a target antenna according to the sounding reference signal;

and transmitting the antenna indication information to the terminal according to the target antenna, wherein the antenna indication information is used for indicating the terminal to determine an uplink transmitting antenna of the terminal from the plurality of antennas.

Optionally, the determining antenna indication information according to the sounding reference signal includes:

and taking one or more antennas with the best uplink channel quality among the plurality of antennas as target antennas according to the sounding reference signals.

Optionally, the antenna indication information includes downlink control information, the downlink control information includes an antenna indication field, the antenna indication field is used for indicating an uplink transmitting antenna of the terminal, and the issuing the antenna indication information to the terminal according to the target antenna includes:

and transmitting the antenna indication information to the terminal through the downlink control information according to the target antenna.

Optionally, the antenna indication information includes a radio resource control message, and the issuing the antenna indication information to the terminal according to the target antenna includes:

and transmitting the antenna indication information to the terminal through the radio resource control message according to the target antenna, wherein the radio resource control message comprises a preset reserved field, and the preset reserved field is used for indicating an uplink transmitting antenna of the terminal.

Optionally, the preset reserved field includes a Dummy field.

Optionally, the method further comprises:

determining the antenna round-robin configuration information according to the parameter configuration information of the user;

and transmitting the antenna round-robin configuration information to the terminal.

According to a third aspect of embodiments of the present disclosure, there is provided an apparatus for determining an antenna, the apparatus being applied to a terminal including a plurality of antennas, the apparatus comprising:

a first transmitting module configured to transmit sounding reference signals to a base station through the plurality of antennas, respectively, the sounding reference signals being used for uplink channel quality estimation;

the acquisition module is configured to acquire antenna indication information issued by the base station according to the sounding reference signal;

and the first determining module is configured to determine an uplink transmitting antenna of the terminal according to the antenna indication information.

Optionally, the first sending module is further configured to:

receiving antenna round-robin configuration information issued by a base station;

Optionally, the antenna indication information includes downlink control information, the downlink control information includes an antenna indication field, the antenna indication field is used for indicating an uplink transmitting antenna of the terminal, and the first determining module is further configured to:

Optionally, the antenna indication information includes a radio resource control message, where the radio resource control message includes a preset reserved field, where the preset reserved field is used to indicate an uplink transmitting antenna of the terminal, and the first determining module is further configured to:

According to a fourth aspect of embodiments of the present disclosure, there is provided an apparatus for determining an antenna, the apparatus being applied to a base station, the apparatus comprising:

the receiving module is configured to receive sounding reference signals respectively sent by a terminal through a plurality of antennas, wherein the sounding reference signals are used for estimating the quality of an uplink channel;

a second determining module configured to determine a target antenna from the sounding reference signal;

And the second sending module is configured to send the antenna indication information to the terminal according to the target antenna, wherein the antenna indication information is used for indicating the terminal to take the target antenna as an uplink sending antenna of the terminal.

Optionally, the second determining module is further configured to:

Optionally, the antenna indication information includes downlink control information, where the downlink control information includes an antenna indication field, where the antenna indication field is used to indicate an uplink transmission antenna of the terminal, and the second transmission module is further configured to:

Optionally, the antenna indication information includes a radio resource control message, where the radio resource control message includes a preset reserved field, where the preset reserved field is used to indicate an uplink transmitting antenna of the terminal, and the second transmitting module is further configured to:

and transmitting the antenna indication information to the terminal through the radio resource control message according to the target antenna.

Optionally, the apparatus further includes a third sending module configured to:

and sending the antenna round trip configuration information to the terminal.

According to a fifth aspect of embodiments of the present disclosure, there is provided an electronic device, comprising:

a memory having a computer program stored thereon;

a processor for executing the computer program in the memory to implement the steps of the method of any of the first aspects; alternatively, the computer program in the memory is executed to implement the steps of the method of any of the second aspects.

According to a sixth aspect of embodiments of the present disclosure, there is provided a computer readable storage medium having stored thereon computer program instructions which, when executed by a processor, implement the steps of the method of any of the first aspects; alternatively, the program instructions, when executed by a processor, implement the steps of the method of any of the second aspects.

The technical scheme provided by the embodiment of the disclosure can comprise the following beneficial effects:

the method comprises the steps of firstly, respectively sending sounding reference signals to a base station through the plurality of antennas, then obtaining antenna indication information sent by the base station according to the sounding reference signals, and finally determining an uplink sending antenna of the terminal according to the antenna indication information. By adopting the scheme, the uplink transmitting antenna with optimal uplink signal quality can be accurately determined from a plurality of antennas of the terminal, the uplink channel performance of wireless communication is improved, and the user experience is improved.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Additional features and advantages of the present disclosure will be set forth in the detailed description which follows.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description, serve to explain the principles of the disclosure, but do not constitute a limitation of the disclosure.

Fig. 1 is a flowchart illustrating a method of determining an antenna according to an exemplary embodiment.

Fig. 2 is a schematic diagram illustrating antenna round trip configuration information according to an example embodiment.

Fig. 3 is a schematic diagram illustrating another antenna round trip configuration information, according to an example embodiment.

Fig. 4 is a flow chart illustrating another method of determining an antenna according to an exemplary embodiment.

Fig. 5 is a flowchart illustrating yet another method of determining an antenna according to an exemplary embodiment.

Fig. 6 is a flowchart illustrating yet another method of determining an antenna according to an exemplary embodiment.

Fig. 7 is a block diagram of a determination apparatus of an antenna according to an exemplary embodiment.

Fig. 8 is a block diagram of another antenna determination apparatus according to an exemplary embodiment.

Fig. 9 is a block diagram of a determination apparatus of yet another antenna according to an exemplary embodiment.

Fig. 10 is a block diagram of an electronic device, according to an example embodiment.

Detailed Description

Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples are not representative of all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with some aspects of the present disclosure as detailed in the accompanying claims, it being understood that the detailed description described herein is merely illustrative and explanatory of the disclosure and is not restrictive of the disclosure.

Firstly, describing the application scenario of the present disclosure, with the development of wireless communication technology, MIMO (Multiple Input Multiple Output ) technology with multiple antennas becomes a key technology for improving user experience, and in order to improve uplink signal quality, a suitable transmitting antenna needs to be selected from multiple antennas of a terminal generally by adopting MIMO technology to bring spatial multiplexing gain and diversity gain to data transmission. For example, in a 5G wireless communication system, a terminal may support four physical antennas, and an operation mode of an uplink transmission antenna of the terminal may be, for example, 1T (one-transmission operation mode) or 2T (two-transmission operation mode). In the related art, in order to select an optimal uplink transmission antenna from four physical antennas, a terminal may determine one or more reception antennas with the best downlink channel quality according to RSRP (Reference Signal Receiving Power, reference signal reception power) measured by each reception antenna, use the one or more reception antennas with the better downlink channel quality as an uplink transmission antenna of the terminal, use the one reception antenna with the best downlink channel quality as a main transmission antenna of the terminal when the operation mode of the uplink transmission antenna of the terminal is 1T, and use the two reception antennas with the best downlink channel quality as main transmission antennas and auxiliary transmission antennas of the terminal when the operation mode of the uplink transmission antenna of the terminal is 2T.

The inventor has noted that the above scheme of using one or more receiving antennas with the best downlink quality as uplink transmitting antennas of the terminal has a problem of low accuracy of selecting antennas, for example, in an FDD (Frequency Division Duplex ) wireless communication system, uplink and downlink frequencies are inconsistent, so that the error of determining the uplink transmitting antennas by the terminal using the downlink channel quality is large. In TDD (Time Division Duplex ) wireless communication systems, the uplink and downlink frequencies are consistent (also referred to as channel reciprocity), but due to the complexity of the wireless channel, the accuracy of this approach is still not high, especially in areas where the wireless signal is weak.

The method for determining the antenna can accurately determine the uplink transmitting antenna with the optimal uplink signal quality from a plurality of antennas of the terminal, improves the uplink channel performance of wireless communication, and improves the experience of users.

The present disclosure is described below in connection with specific embodiments.

Fig. 1 is a flowchart illustrating a method of determining an antenna according to an exemplary embodiment, the method being applied to a terminal including a plurality of antennas, and the method may include the steps of:

In step S101, sounding reference signals are transmitted to the base station through a plurality of antennas, respectively.

Wherein the sounding reference signal is used for uplink channel quality estimation.

Taking a 5G wireless communication system as an example, the sounding reference signal may be SRS (Sounding Reference Signal ), the number of antennas of the terminal may be four, and the operation mode of the uplink transmitting antenna of the terminal may be 1T or 2T.

The embodiment can be applied to a 5G wireless communication system, where the terminal can support antenna rotation to transmit the sounding reference signal, that is, the terminal sequentially transmits the sounding reference signal through one or more antennas in an antenna rotation manner, and in some possible implementations, the sounding reference signal can be transmitted to the base station through multiple antennas through the following steps.

Step 1, receiving antenna round-robin configuration information issued by a base station.

The antenna round trip configuration information is used for indicating at least one target antenna transmitting the sounding reference signal each time.

Taking a 5G wireless communication system as an example, the base station may send an SRS sounding reference signal in a manner that an SRS-resource configuration user is "antenna switching" to instruct the terminal to send the SRS sounding reference signal through antenna sounding. In addition, the terminal may also be indicated to send at least one target antenna of the SRS sounding reference signal each time through antenna sounding configuration information (for example, through an SRS-ResourceSet implicit indication in the SRS configuration), where the antenna sounding configuration information may be determined by the base station according to the supported SRS-txpoint switch capability reported by the terminal, and the terminal may determine the antenna sounding configuration information according to the SRS-ResourceSet in the SRS configuration, which may be specifically referred to the specification of the relevant standard protocol and will not be repeated herein.

Fig. 2 is a schematic diagram illustrating antenna round trip configuration information according to an example embodiment. As shown in fig. 2, in the case that the antenna round configuration information is characterized as "t1r4", the terminal may respectively transmit the SRS sounding reference signal in four different SRS resources by using different antennas, where each SRS resource corresponds to a different symbol, that is, the SRS sounding reference signal is sequentially transmitted through the four antennas of the terminal in the four different symbols.

Fig. 3 is a schematic diagram illustrating another antenna round trip configuration information, according to an example embodiment. As shown in fig. 3, in the case where the antenna round trip configuration information is characterized as "t2r4", the terminal may divide four antennas into two antenna groups, each antenna group includes two antennas, the same antenna group transmits an SRS sounding reference signal in the same SRS resource, and different antenna groups transmit an SRS sounding reference signal in different SRS resources. For example: antenna 0 and antenna 1 respectively correspond to different SRS ports of the same SRS resource in the same SRS symbol, antenna 2 and antenna 3 respectively correspond to different SRS ports of the same SRS resource in another SRS symbol, and specific meanings of the SRS ports may be referred to description of MIMO technology in the related art, and are not repeated here.

It should be noted that, in the present disclosure, the antenna of the terminal is a logical antenna port of the terminal, and the present disclosure does not limit a correspondence between a logical antenna port and a physical antenna port of the terminal.

And step 2, transmitting the sounding reference signal through at least one target antenna in the plurality of antennas in sequence according to the antenna round-robin configuration information.

And the terminal sequentially transmits SRS sounding reference signals to the base station through each antenna according to the antenna round configuration information, so that the base station acquires the SRS sounding reference signals transmitted by each antenna of the terminal.

In step S102, antenna indication information issued by the base station according to the sounding reference signal is obtained.

For example, after acquiring the SRS sounding reference signal sent by each antenna of the terminal, the base station may determine antenna indication information according to the SRS sounding reference signal, and send the antenna indication information to the terminal, where the terminal receives the antenna indication information sent by the base station, where the antenna indication information is used to indicate a sending antenna when the terminal sends uplink data.

In step S103, an uplink transmission antenna of the terminal is determined based on the antenna instruction information.

In some embodiments, the antenna indication information includes downlink control information. The downlink control information includes an antenna indication field, where the antenna indication field is used to indicate an uplink transmitting antenna of the terminal, and an antenna indicated in the antenna indication field of the downlink control information may be used as the uplink transmitting antenna.

Still taking a 5G wireless communication system as an example, the operation mode of the uplink transmitting antenna of the terminal may be 1T or 2T. In the case that the operation mode of the uplink transmission antenna of the terminal is 1T, the uplink transmission antenna may include a main transmission antenna. In the case that the operation mode of the uplink transmission antenna of the terminal is 2T, the uplink transmission antenna may include a main transmission antenna and an auxiliary transmission antenna.

In some possible implementations, in a case where the terminal is not configured with the aperiodic SRS resource, the downlink control information may include DCI (Downlink Control Information ), the antenna indication field may include an SRS request field (may also be referred to as a cell Information Element) in the DCI, the SRS request field includes two bits, and an antenna indicated in the antenna indication field of the downlink control information may be used as an uplink transmission antenna.

For example, the correspondence between the value of the SRS request field (i.e., the antenna indication field) and the uplink transmission antenna of the terminal can be seen in the following table one.

List one

As shown in table one, when the operation mode of the uplink transmission antenna of the terminal is 1T, the primary transmission antenna corresponding to the terminal may be determined by the value of the SRS request field (i.e., the antenna indication field) in the first DCI. When the operation mode of the uplink transmitting antenna of the terminal is 2T, the primary transmitting antenna corresponding to the terminal may be determined by the value of the SRS request field (i.e. the antenna indication field) in the first DCI, and the secondary transmitting antenna corresponding to the terminal may be determined by the value of the SRS request field (i.e. the antenna indication field) in the second DCI.

For example, the first DCI may be DCI 0-1, the second DCI may be DCI 1-1, where when the operation mode of the uplink transmission antenna of the terminal is 2T, the value of the SRS request field in DCI 0-1 is "01", and the value of the SRS request field in DCI 1-1 is "11", it is determined that the main transmission antenna of the terminal is antenna 1, and the auxiliary transmission antenna is antenna 3.

By adopting the scheme, the transmitting antenna with the optimal uplink signal quality can be accurately determined from a plurality of antennas of the terminal, the uplink channel performance of wireless communication is improved, and the user experience is improved.

In another possible implementation manner, when the operation mode of the uplink transmission antenna of the terminal is 1T, the target SRS resource may be determined according to the value of the SRS request field (i.e., the antenna indication field) in the third DCI, where the target SRS resource may be a number of SRS resources in the SRS resource set corresponding to the usage of "antenna switching", and then the terminal antenna corresponding to the target SRS resource is determined according to the antenna round configuration information.

For example, in the case that the operation mode of the uplink transmitting antenna of the terminal is 1T, the corresponding relationship between the SRS request field value in the third DCI and the target SRS resource may be referred to as the following table two.

Watch II

As shown in table two, when the operation mode of the uplink transmission antenna of the terminal is 1T, the corresponding target SRS resource may be determined according to the value of the SRS request field in the third DCI, and then the terminal antenna corresponding to the target SRS resource may be determined according to the antenna round configuration information. For example, the third DCI may be DCI 0-1, and when the value of the SRS request field in DCI 0-1 is "01" and the antenna round trip configuration information is characterized by "t1r4", the target SRS resource may be determined to be 1 according to the value of the SRS request field, and further, the main transmitting antenna of the corresponding terminal may be determined to be 1 according to the correspondence between the SRS resource and the terminal antenna.

In another possible implementation manner, when the operation mode of the uplink transmission antenna of the terminal is 2T, the target SRS resource may be determined according to the value of the SRS request field (i.e. the antenna indication field) in the fourth DCI, where the target SRS resource may be a number of SRS resources in the SRS resource set corresponding to the usage being "antenna switching", and then a target antenna group corresponding to the target SRS resource is determined according to the antenna round configuration information, where the target antenna group includes at least two terminal antennas. And determining an SRS port corresponding to the main transmitting antenna in the target SRS resource according to the SRS request field (namely the antenna indication field) value in the fifth DCI, determining the main transmitting antenna from the target antenna group according to the SRS port, and taking other antennas in the target antenna group as auxiliary transmitting antennas after determining the main transmitting antenna from the target antenna group.

For example, in the case where the operation mode of the uplink transmitting antenna of the terminal is 2T, the correspondence between the SRS request field value in the fourth DCI and the target SRS resource and the correspondence between the SRS request field in the fifth DCI and the SRS port may be referred to the following table three.

Watch III

As shown in table three, when the operation mode of the uplink transmission antenna of the terminal is 2T, and the antenna round configuration information is characterized as "T2r4", the corresponding target SRS resources may be determined according to the value of the SRS request field in the fourth DCI, each target SRS resource corresponds to two SRS ports, the SRS port corresponding to the main transmission antenna may be determined according to the value of the SRS request field in the fifth DCI, and the main transmission antenna may be determined from the target antenna group. For example, the fourth DCI may be DCI0-1, where the SRS request field has a value of "01" in DCI0-1 and the antenna round configuration information is characterized as "t2r4", the target SRS resource may be determined to be 1, the fifth DCI may be DCI1-1, where the SRS request field has a value of "00" in DCI1-1, the SRS port may be determined to be 0, so that the primary transmit antenna of the terminal is determined to be antenna 2, and where it is determined that the primary transmit antenna of the terminal is 2, other antennas (for example, antenna 3 in fig. 3) in the same target antenna group may be used as secondary transmit antennas.

It should be noted that, the target SRS resource in the second and third tables may represent an order of the target SRS resource in the srsrsresourceset of the SRS resource allocation message, or may be a specific SRS resource number, which is not limited in this disclosure, and the SRS port in the third table is a port number when the terminal sends the SRS resource, may represent an order of a plurality of SRS logical ports, and does not limit a correspondence between the port number and the SRS logical port, and specific SRS resource allocation and SRS logical ports may refer to a specification of a related standard protocol, which are not repeated herein.

By adopting the scheme, when the working mode of the uplink transmitting antenna of the terminal is further expanded to more uplink transmitting antennas, the uplink transmitting antenna with the optimal uplink signal quality can be accurately determined from a plurality of antennas of the terminal, the application scene of the antenna determining method is expanded, and the user experience is further improved.

In other embodiments, the terminal may determine the uplink transmit antenna of the terminal from a plurality of antennas according to the antenna indication information by referring to the comprehensive evaluation of other wireless indexes measured by the terminal, which is not limited in this disclosure.

For example, the comprehensive evaluation of the uplink transmitting antenna of the terminal and the downlink channel quality information (for example, RSRP) measured by the terminal may be obtained through the antenna indication information, where, when the RSRP of a third transmitting antenna other than the main transmitting antenna and the auxiliary transmitting antenna deviates from the RSRP of the main transmitting antenna by less than a preset deviation threshold, and the signal fluctuation is less than a preset fluctuation threshold (for example, the standard deviation of the RSRP is less than the preset fluctuation threshold), the third transmitting antenna may also be used as the auxiliary transmitting antenna.

By adopting the scheme, the uplink transmitting antenna with optimal uplink signal quality can be accurately determined from a plurality of antennas of the terminal, the uplink channel performance of wireless communication is improved, and the user experience is improved.

In other possible implementations, the downlink Control information may include a MAC (Media Access Control ) CE (Control Element). The terminal can determine the uplink transmitting antenna of the terminal through the MAC CE.

For example, the antenna indicated in the MAC CE may be used as an uplink transmission antenna. In some possible implementations, the Reserved field (Index is 100001-101111) or the Padding field (Index is 111111) in the MAC CE may be used as the antenna indication field, and the antenna indicated in the antenna indication field of the MAC CE (i.e. the downlink control information) may be used as the uplink transmitting antenna. Specifically, the uplink transmitting antenna of the terminal may be indicated in a manner similar to the first, second or third manners, or may be indicated in a bitmap manner. For example, when the operation mode of the uplink transmission antenna of the terminal is 1T and the number of the antennas of the terminal is four, the main transmission antenna of the terminal may be indicated by one four-bit bitmap, for example, "0001" indicates that the main transmission antenna of the terminal is antenna 3 and "1000" indicates that the main transmission antenna of the terminal is antenna 0. When the working mode of the uplink transmitting antenna of the terminal is 2T and the number of the antennas of the terminal is four, the main transmitting antenna and the auxiliary transmitting antenna of the terminal can be indicated by two four-bit bitmaps or one eight-bit bitmap (for example, the first four bits indicate the main transmitting antenna and the second four bits indicate the auxiliary transmitting antenna), for example, "00010010" indicates that the main transmitting antenna is the antenna 3 and the auxiliary transmitting antenna is the antenna 2.

In other embodiments, the antenna indication information includes a radio resource control message. The uplink transmit antenna of the terminal may be determined according to the radio resource control message.

In some possible implementations, an antenna indicated in a preset reserved field of the radio resource control message may be used as an uplink transmitting antenna.

Still taking the 5G wireless communication system as an example, the radio resource control message may include an RRC (Radio Resource Control ) message, and the preset reserved field may include a preset Dummy field in the RRC message.

For example, in a different RRC version, the field reserved in the RRC message is referred to as the Dummy field. In some possible implementations, the antenna indicated in one or more preset Dummy fields in the preset RRC message may be used as an uplink transmission antenna of the terminal. Specifically, the preset Dummy field may indicate the uplink transmitting antenna of the terminal in a manner similar to the first, second or third manners, or may indicate the uplink transmitting antenna of the terminal in a bitmap manner, and specifically, the technical scheme of the MAC CE indicating the terminal transmitting antenna may be referred to, which is not described herein again.

Fig. 4 is a flowchart illustrating another method of determining an antenna, which is applied to a base station, according to an exemplary embodiment, and which may include the steps of:

in step S401, the receiving terminal transmits sounding reference signals through a plurality of antennas, respectively.

Taking a 5G wireless communication system as an example, the sounding reference signal may be an SRS reference signal, and the base station receives the SRS reference signal sent by the terminal through multiple antennas, and is configured to estimate uplink channel quality of each antenna through the SRS reference signal.

In step S402, a target antenna is determined from the sounding reference signal.

In some possible implementations, one or more antennas with the best uplink channel quality among the multiple antennas may be used as a target antenna according to the sounding reference signal.

For example, one or more target antennas with the best uplink channel quality may be determined according to the operation mode of the transmitting antenna of the terminal and the sounding reference signals corresponding to each transmitting antenna of the terminal. For example, in the case where the operation mode of the uplink transmission antenna of the terminal is 1T, a target antenna with the best uplink channel quality may be determined according to the sounding reference signal. Under the condition that the working mode of the uplink transmitting antenna of the terminal is 2T, two target antennas with the best uplink channel quality can be determined according to the sounding reference signal.

For example, in the case where the operation mode of the uplink transmission antenna of the terminal is 1T, the first target antenna with the best uplink channel quality may be used as the main transmission antenna of the terminal. When the working mode of the uplink transmitting antenna of the terminal is 2T, the first target antenna with the best uplink channel quality can be used as the main transmitting antenna of the terminal, and the second target antenna with the next best uplink channel quality can be used as the auxiliary transmitting antenna of the terminal.

In step S403, antenna indication information is issued to the terminal according to the target antenna.

The antenna indication information is used for indicating the terminal to take the target antenna as an uplink transmitting antenna of the terminal. In some embodiments, the antenna indication information includes downlink control information, where the downlink control information includes an antenna indication field, and the antenna indication field is used to indicate an uplink transmitting antenna of the terminal, and the antenna indication information may be sent to the terminal through the downlink control information according to the target antenna by the following steps.

And step 1, determining antenna indication information according to a target antenna.

Taking the 5G wireless communication system as an example, in a case that the terminal is not configured with an aperiodic SRS resource, the downlink control information includes DCI, and in some possible implementations, an SRS request field in the DCI may be used as an antenna indication field, and the value of the SRS request field in the DCI (i.e. the antenna indication field) indicates that the terminal determines an uplink transmitting antenna of the terminal from multiple antennas.

For example, when the operation mode of the uplink transmission antenna of the terminal is 1T, after determining the main transmission antenna of the terminal, the antenna indication information may be determined by referring to the correspondence between the value of the SRS request field (i.e. the antenna indication field) in the first DCI and the main transmission antenna of the terminal in table one. For example, the first DCI may be DCI0-1, and when determining that the main transmit antenna of the terminal is antenna 1, the SRS request field in DCI0-1 is determined to have a value of "01". In the case that the operation mode of the uplink transmitting antenna of the terminal is 2T, after determining the primary transmitting antenna and the secondary transmitting antenna of the terminal, the corresponding relationship between the value of the SRS request field (i.e. the antenna indication field) in the first DCI and the primary transmitting antenna of the terminal and the corresponding relationship between the value of the SRS request field (i.e. the antenna indication field) in the second DCI and the secondary transmitting antenna of the terminal may be referred to in table one to determine the antenna indication information. For example, the first DCI may be DCI0-1, the second DCI may be DCI 1-1, and when determining that the primary transmit antenna of the terminal is antenna 1 and the secondary transmit antenna is 3, the value of the SRS request field in DCI0-1 may be determined to be "01", and the value of the SRS request field in DCI 1-1 may be determined to be "11".

In another possible implementation manner, the antenna indication information is determined according to the target antenna and the antenna round trip configuration information, and the antenna indication information is sent to the terminal.

For example, when the operation mode of the uplink transmitting antenna of the terminal is 1T, the target SRS resource corresponding to the main transmitting antenna of the terminal may also be determined through the antenna round trip configuration information, and the value of the SRS request field in the third DCI may be determined according to the target SRS resource and table two. For example, the third DCI may be DCI0-1, where the primary transmit antenna of the terminal is determined to be 1 and the antenna round configuration information is characterized as "t1r4", the target SRS resource may be determined to be 1, and according to the target SRS resource and table two, the value of the SRS request field in DCI0-1 may be determined to be "01". When the operation mode of the uplink transmitting antenna of the terminal is 2T and the target SRS resources corresponding to the main transmitting antenna and the auxiliary transmitting antenna of the terminal are the same SRS resources according to the antenna round configuration information, the values of the SRS request fields (i.e. the antenna indication fields) in the fourth DCI and the fifth DCI may be determined according to the SRS ports and the target SRS resources corresponding to the main transmitting antenna and the auxiliary transmitting antenna respectively. For example, the fourth DCI may be DCI0-1, the fifth DCI may be DCI1-1, and when it is determined that the primary transmit antenna is 2, the secondary transmit antenna is 3, and the antenna round configuration information is characterized by "t2r4", it may be determined that SRS ports corresponding to the primary transmit antenna and the secondary transmit antenna are 0 and 1, respectively, and corresponding target SRS resources are 1, and it may be confirmed that the value of the SRS request field in DCI0-1 is "01" and the value of the SRS request field in DCI1-1 is "00" according to the SRS ports, the target SRS resources, and table three, respectively.

In another possible implementation, the downlink control information may include a MAC CE. The base station may transmit the antenna indication information through the MAC CE.

Still taking the 5G wireless communication system as an example, a Reserved field (Index is 100001-101111) or a Padding field (Index is 111111) in the MAC CE may be used as the antenna indication field, in which the transmitting antenna is indicated. Specifically, the uplink transmitting antenna of the terminal may be indicated in a manner similar to the first, second or third manners, or may be indicated in a bitmap manner. For example, in the case where the operation mode of the transmitting antenna of the terminal is 1T and the number of the antennas of the terminal is four, the main transmitting antenna of the terminal may be indicated by one four-bit bitmap, for example, "0001" indicates that the main transmitting antenna of the terminal is antenna 3 and "1000" indicates that the main transmitting antenna of the terminal is antenna 0. In the case that the operation mode of the transmitting antenna of the terminal is 2T and the number of the antennas of the terminal is four, the main transmitting antenna and the auxiliary transmitting antenna of the terminal can be indicated by two four-bit bitmaps or one eight-bit bitmap (the first four bits indicate the main transmitting antenna and the second four bits indicate the auxiliary transmitting antenna), for example, "00010010" indicates that the main transmitting antenna is the antenna 3 and the auxiliary transmitting antenna is the antenna 2. In another possible implementation manner, in the case that the operation mode of the transmitting antenna of the terminal is 2T and the number of the antennas of the terminal is four, the uplink transmitting antenna of the terminal may be indicated by one four-bit bitmap, and the terminal may determine the main transmitting antenna and the auxiliary transmitting antenna by itself from the uplink transmitting antennas, for example, "1010" indicates that the uplink transmitting antennas of the terminal are antenna 0 and antenna 2, and the terminal may determine the main transmitting antenna and the auxiliary transmitting antenna by itself from antenna 0 and antenna 2.

And step 2, transmitting antenna indication information to the terminal through the downlink control information.

For example, after determining the antenna indication information according to the target antenna, the antenna indication information may be transmitted to the terminal through the above-mentioned downlink control information.

In other embodiments, the antenna indication information includes a radio resource control message. The antenna indication information may be transmitted to the terminal through a radio resource control message.

The radio resource control message comprises a preset reserved field, wherein the preset reserved field is used for indicating an uplink transmitting antenna of the terminal. The antenna indication information may be transmitted to the terminal through the radio resource control message according to the target antenna as follows.

And step 1, determining antenna indication information according to a target antenna. Still taking the 5G wireless communication system as an example, the radio resource control message may include a preset RRC (Radio Resource Control ) message, and the preset reserved field may include a preset Dummy field in the preset RRC message.

In some possible implementations, the base station determines a preset RRC message corresponding to each terminal and a preset Dummy field in the preset RRC message according to the difference of RRC software versions of the terminals. The preset RRC messages corresponding to different RRC version terminals and preset Dummy fields in the preset RRC messages may be different or the same, and specifically, reference may be made to the 5G related protocol standard. And sending antenna indication information through a preset Dummy field in the preset RRC message corresponding to the terminal. Specifically, the preset Dummy field may indicate the uplink transmitting antenna of the terminal in a manner similar to the first table, the second table or the third table, or may indicate the uplink transmitting antenna of the terminal in a bitmap manner, and specifically, the technical scheme of the terminal transmitting antenna may be indicated by referring to the above MAC CE, which is not repeated herein.

And step 2, transmitting antenna indication information to the terminal through the radio resource control message.

For example, after determining the antenna indication information according to the target antenna, the antenna indication information may be transmitted to the terminal through the above-described radio resource control message.

Fig. 5 is a flowchart illustrating yet another method of determining an antenna according to an exemplary embodiment, as shown in fig. 5, which may further include the following steps on the basis of the embodiment shown in fig. 4:

in step S404, antenna round trip configuration information is determined according to the parameter configuration information of the user.

Still taking a 5G wireless communication system as an example, the base station may send an SRS sounding reference signal in an SRS-resource configuration with a usage of "antenna switching" indicating that the terminal sends the SRS sounding reference signal through antenna sounding. In addition, in some possible implementations, the base station may determine antenna round trip configuration information according to terminal capability reported by a supported SRS-txpoint switch in the terminal capability and quality of a terminal uplink signal, and determine specific SRS configuration according to the antenna round trip configuration information, so as to instruct the terminal to transmit at least one target antenna of the SRS sounding reference signal each time. Reference may be made specifically to the provision of the relevant standard protocol, which is not described here in detail.

In step S405, antenna round trip configuration information is issued to the terminal.

Still taking the 5G wireless communication system as an example, the antenna round-robin configuration information may be sent to the terminal through a parameter configuration RRC message, and specifically, reference may be made to a protocol standard related to 5G, which is not described herein.

By adopting the scheme, the sounding reference signals can be respectively sent by the indication terminal through the antenna round-trip configuration information, so that the uplink sending antenna with optimal uplink signal quality can be accurately determined, the uplink channel performance of wireless communication is improved, and the user experience is improved.

Fig. 6 is a flowchart illustrating yet another method of determining an antenna, as shown in fig. 6, according to an exemplary embodiment:

in step S601, the base station determines antenna round-robin configuration information according to parameter configuration information of a user.

Still taking a 5G wireless communication system as an example, the base station may send an SRS sounding reference signal in an SRS-resource configuration with a usage of "antenna switching" indicating that the terminal sends the SRS sounding reference signal through antenna sounding. In addition, in some possible implementations, antenna round trip configuration information may be determined according to terminal capability reported by a supported SRS-txpoint switch in the terminal capability and the quality of a terminal uplink signal, and specific SRS configuration may be determined according to the antenna round trip configuration information, so as to instruct the terminal to transmit at least one target antenna of the SRS sounding reference signal each time.

In step S602, the base station transmits antenna round trip configuration information to the terminal.

In step S603, the terminal receives antenna round trip configuration information issued by the base station.

In step S604, the terminal sequentially transmits sounding reference signals through at least one target antenna of the plurality of antennas according to the antenna sounding configuration information.

Still taking a 5G wireless communication system as an example, the sounding reference signal may include an SRS sounding reference signal, and the terminal sequentially sends the SRS sounding reference signal through each antenna according to the antenna round trip configuration information, so that the base station obtains the SRS sounding reference signal sent by each antenna of the terminal.

In step S605, the base station receives sounding reference signals transmitted by the terminal through a plurality of antennas.

In step S606, a target antenna is determined from the sounding reference signal.

In step S607, the base station transmits antenna indication information to the terminal according to the target antenna.

The antenna indication information is used for indicating the terminal to take the target antenna as an uplink transmitting antenna of the terminal.

Taking the 5G wireless communication system as an example, the base station may determine the antenna indication information according to the target antenna, and then send the antenna indication information to the terminal through downlink control information (e.g., an antenna indication field in DCI or MACCE) or a radio resource control message (a preset reserved field in a preset radio resource control message).

In step S608, the terminal acquires antenna indication information sent by the base station according to the sounding reference signal.

Still taking a 5G wireless communication system as an example, after the base station acquires an SRS sounding reference signal transmitted by each transmitting antenna of the terminal, determines antenna indication information according to the SRS sounding reference signal, and transmits the antenna indication information to the terminal, the terminal may acquire the antenna indication information from the base station, where the antenna indication information is used to indicate a transmitting antenna when the terminal transmits uplink data.

In step S609, the terminal determines an uplink transmission antenna of the terminal according to the antenna instruction information.

The specific reference may be made to the description of step S103, which is not repeated here.

Fig. 7 is a block diagram of an antenna determining apparatus 700 according to an exemplary embodiment, and the antenna determining apparatus 700 is applied to a terminal including a plurality of antennas, as shown in fig. 7, the antenna determining apparatus 700 includes:

a first transmitting module 701 configured to transmit sounding reference signals to the base station through a plurality of antennas, respectively, the sounding reference signals being used for uplink channel quality estimation;

An obtaining module 702, configured to obtain antenna indication information sent by a base station according to a sounding reference signal;

the first determining module 703 is configured to determine an uplink transmitting antenna of the terminal according to the antenna indication information.

Optionally, the first sending module 701 is further configured to:

and transmitting the sounding reference signal through at least one target antenna in the plurality of antennas in sequence according to the antenna round trip configuration information, wherein the antenna round trip configuration information is used for indicating the at least one target antenna transmitting the sounding reference signal each time.

Optionally, the antenna indication information includes downlink control information, where the downlink control information includes an antenna indication field, where the antenna indication field is used to indicate an uplink transmission antenna of the terminal, and the first determining module 703 is further configured to:

and taking the antenna indicated in the antenna indication field of the downlink control information as an uplink transmitting antenna.

Optionally, the antenna indication information includes a radio resource control message, where the radio resource control message includes a preset reserved field, where the preset reserved field is used to indicate an uplink transmitting antenna of the terminal, and the first determining module 703 is further configured to:

and taking the antenna indicated in the preset reserved field of the radio resource control message as an uplink transmitting antenna.

Fig. 8 is a block diagram of another antenna determining apparatus according to an exemplary embodiment, the antenna determining apparatus 800 is applied to a base station, and as shown in fig. 8, the antenna determining apparatus 800 includes:

a receiving module 801, configured to receive sounding reference signals sent by a terminal through a plurality of antennas respectively, where the sounding reference signals are used for uplink channel quality estimation;

a second determining module 802 configured to determine a target antenna according to the sounding reference signal;

and the second sending module 803 is configured to send antenna indication information to the terminal according to the target antenna, where the antenna indication information is used to instruct the terminal to determine an uplink sending antenna of the terminal from multiple antennas.

Optionally, the second determining module 802 is further configured to:

and determining the target antenna with the best uplink channel quality from the plurality of antennas according to the sounding reference signal.

Optionally, the antenna indication information includes downlink control information, where the downlink control information includes an antenna indication field, where the antenna indication field is used to indicate an uplink transmission antenna of the terminal, and the second transmission module 803 is further configured to:

and transmitting antenna indication information to the terminal through the downlink control information according to the target antenna.

Optionally, the antenna indication information includes a radio resource control message, where the radio resource control message includes a preset reserved field, where the preset reserved field is used to indicate a transmitting antenna of the terminal, and the second transmitting module 803 is further configured to:

And transmitting antenna indication information to the terminal through the radio resource control message according to the target antenna.

Fig. 9 is a block diagram of yet another antenna determination apparatus, according to an exemplary embodiment, as shown in fig. 9, the antenna determination apparatus 800 further includes a third sending module 804 configured to:

determining antenna round-robin configuration information according to parameter configuration information of a user;

and transmitting antenna round-robin configuration information to the terminal.

The specific manner in which the various modules perform the operations in the apparatus of the above embodiments have been described in detail in connection with the embodiments of the method, and will not be described in detail herein.

Fig. 10 is a block diagram of an electronic device 1000, shown in accordance with an exemplary embodiment. As shown in fig. 10, the electronic device 1000 may include: a processor 1001, and a memory 1002. The electronic device 1000 may also include one or more of a multimedia component 1003, an input/output interface 1004, and a communication component 1005.

Wherein the processor 1001 is configured to control the overall operation of the electronic device 1000 to perform all or part of the steps in the determining method of the first aspect; or to complete all or part of the steps in the determination method of the second aspect described above. The memory 1002 is used to store various types of data to support operation at the electronic device 1000, which may include, for example, instructions for any application or method operating on the electronic device 1000, as well as application-related data, such as contact data, transceived messages, pictures, audio, video, and the like. The Memory 1002 may be implemented by any type or combination of volatile or non-volatile Memory devices, such as static random access Memory (Static Random Access Memory, SRAM for short), electrically erasable programmable Read-Only Memory (Electrically Erasable Programmable Read-Only Memory, EEPROM for short), erasable programmable Read-Only Memory (Erasable Programmable Read-Only Memory, EPROM for short), programmable Read-Only Memory (Programmable Read-Only Memory, PROM for short), read-Only Memory (ROM for short), magnetic Memory, flash Memory, magnetic disk, or optical disk. The multimedia component 1003 may include a screen and audio components. Wherein the screen may be, for example, a touch screen, the audio component being for outputting and/or inputting audio signals. For example, the audio component may include a microphone for receiving external audio signals. The received audio signals may be further stored in the memory 1002 or transmitted through the communication component 1005. The audio assembly further comprises at least one speaker for outputting audio signals. The input/output interface 1004 provides an interface between the processor 1001 and other interface modules, which may be a keyboard, mouse, buttons, etc. These buttons may be virtual buttons or physical buttons. The communication component 1005 is used for wired or wireless communication between the electronic device 1000 and other devices. Wireless communication, such as Wi-Fi, bluetooth, near field communication (Near Field Communication, NFC for short), 2G, 3G, 4G, NB-IOT, eMTC, or other 5G, etc., or one or a combination of more of them, is not limited herein. The corresponding communication component 1005 may thus comprise: wi-Fi module, bluetooth module, NFC module, etc.

In another exemplary embodiment, there is also provided a non-transitory computer readable storage medium including program instructions which, when executed by a processor, implement the steps of the method of determining an antenna of the first aspect described above; alternatively, the program instructions, when executed by a processor, implement the steps of the method for determining an antenna of the second aspect described above. For example, the computer readable storage medium may be the above-described memory including program instructions executable by a processor of the electronic device to perform the method of determining an antenna of the first aspect or the method of determining an antenna of the second aspect.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure. This application is intended to cover any adaptations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It is to be understood that the present disclosure is not limited to the precise arrangements and instrumentalities shown in the drawings, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A method for determining an antenna, the method being applied to a terminal, the terminal comprising a plurality of antennas, the method comprising:

2. The method according to claim 1, wherein the method further comprises:

3. The method according to claim 1 or 2, wherein the antenna indication information includes downlink control information, the downlink control information includes an antenna indication field, the antenna indication field is used to indicate an uplink transmission antenna of the terminal, and the determining, according to the antenna indication information, the uplink transmission antenna of the terminal from the plurality of antennas includes:

4. The method according to claim 1 or 2, wherein the antenna indication information includes a radio resource control message, the radio resource control message includes a preset reserved field, the preset reserved field is used for indicating an uplink transmission antenna of the terminal, and determining, according to the antenna indication information, the uplink transmission antenna of the terminal from the plurality of antennas includes:

5. The method of claim 4, wherein the pre-set reserved field comprises a Dummy field.

6. A method for determining an antenna, the method being applied to a base station, the method comprising:

determining a target antenna according to the sounding reference signal;

and transmitting the antenna indication information to the terminal according to the target antenna, wherein the antenna indication information is used for indicating the terminal to take the target antenna as an uplink transmitting antenna of the terminal.

7. The method of claim 6, wherein said determining a target antenna from said sounding reference signal comprises:

8. The method of claim 7, wherein the antenna indication information comprises downlink control information, the downlink control information comprises an antenna indication field, the antenna indication field is used to indicate an uplink transmit antenna of the terminal, and the issuing the antenna indication information to the terminal according to the target antenna comprises:

9. The method of claim 7, wherein the antenna indication information comprises a radio resource control message, and wherein the issuing the antenna indication information to the terminal according to the target antenna comprises: and transmitting the antenna indication information to the terminal through the radio resource control message according to the target antenna, wherein the radio resource control message comprises a preset reserved field, and the preset reserved field is used for indicating an uplink transmitting antenna of the terminal.

10. The method of claim 9, wherein the preset reserved field comprises a Dummy field.

11. The method according to any one of claims 7 to 10, further comprising:

12. An antenna determining apparatus, wherein the apparatus is applied to a terminal including a plurality of antennas, the apparatus comprising:

13. An apparatus for determining an antenna, the apparatus being applied to a base station, the apparatus comprising:

14. An electronic device, comprising:

a memory having a computer program stored thereon;

a processor for executing the computer program in the memory to implement the steps of the method of any one of claims 1-5; alternatively, the computer program in the memory is executed to implement the steps of the method of any of claims 6-11.

15. A non-transitory computer readable storage medium having stored thereon a computer program, characterized in that the program when executed by a processor implements the steps of the method according to any of claims 1-5; alternatively, the program, when executed by a processor, implements the steps of the method of any of claims 6-11.