CN111464275A

CN111464275A - Sending configuration and sending method of sounding reference signal, terminal and network equipment

Info

Publication number: CN111464275A
Application number: CN201910054643.7A
Authority: CN
Inventors: 胡丽洁; 杨拓; 侯雪颖; 夏亮; 王启星
Original assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Current assignee: China Mobile Zijin Jiangsu Innovation Research Institute Co ltd; China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Priority date: 2019-01-21
Filing date: 2019-01-21
Publication date: 2020-07-28
Anticipated expiration: 2039-01-21
Also published as: CN111464275B

Abstract

The invention provides a sending configuration and sending method of a sounding reference signal, a terminal and network equipment, wherein the method comprises the following steps: configuring N sets of SRS configuration information for the terminal, wherein different pieces of SRS configuration information are respectively matched with the number of different receiving and transmitting antenna ports, or different pieces of SRS configuration information are respectively matched with the maximum layer number of different MIMO; the embodiment of the invention configures N sets of SRS configuration information for the terminal, and the configuration information is respectively matched with the number of different receiving and transmitting antenna ports or the maximum number of different MIMO layers, so that the terminal can determine the SRS resource adaptive to the number of the semi-static or static changed receiving and transmitting antennas, the problem that the number of the receiving and transmitting antenna ports used by the terminal is not matched with the SRS resource reported by the terminal and the network configuration is solved, and the network overhead can be reduced.

Description

Sending configuration and sending method of sounding reference signal, terminal and network equipment

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a sounding reference signal sending configuration and sending method, a terminal, and a network device.

Background

The number of receiving antennas of the terminal affects the number of radio frequency channels opened by the terminal, and for NR (New radio interface), the terminal is required to support the capability of 4RX reception. Experimental data show that the power consumption of a terminal increases as the number of antennas to receive and the MIMO (Multiple-Input Multiple-Output) Rank number increase.

However, generally, the number of transmit antennas of the terminal is less than the number of receive antennas, for example, the terminal transmits data using 2 antennas, but may receive data using 4 antennas, that is, 2T4R (2 transmit 4 receive), in order to obtain channel state information corresponding to 4 downlink receive antennas, it is necessary to adopt a method of transmitting by antennas in turn, for example, transmit using the first 2 antennas at time n, transmit using the last 2 antennas at time m, synthesize SRS (Sounding Reference Signal) of 4 antennas at two times at the base station, and obtain channel state information on 4 receive antennas by means of reciprocity.

When the SRS resource set configuration for the terminal is used for 'antenna switching' (antenna alternating transmission), the network performs different SRS configurations for the terminal according to different capabilities of the terminal.

For 1T2R (1 transmission 2 reception), at most 2 SRS resource sets with different resource types (e.g., periodic, semi-persistent, aperiodic) may be configured for the terminal, and each set has 2 SRS resources, which are transmitted on different symbols respectively. And each SRS resource contains a single SRS port (SRS port), the SRS ports within the two SRS resources being different.

For 2T4R (2 transmission and 4 reception), at most 2 SRS resource sets with different resource types (e.g., periodic, semi-persistent, and aperiodic) may be configured for the terminal, and each set has 2 SRS resources, which are transmitted on different symbols respectively. Each SRS resource comprises 2 SRS ports, and the SRS ports in the two SRS resources are different.

For 1T4R (1 transmission and 4 reception), a terminal may be configured with 0 or 1 periodic or semi-persistent SRS resource set, where the set includes 4 SRS resources, and the SRS resources are transmitted on different symbols. Each SRS resource contains 1 SRS port, and the SRS ports within each SRS resource are different.

For 1T4R (1 transmission 4 reception), the terminal may be configured with 0 or 2 aperiodic SRS resource sets, which contain 4 SRS resources in total and are transmitted on different symbols on 2 different slots. The SRS ports within each SRS resource are different from each other. There are 2 SRS resources in each of the two sets or one set includes 1 SRS resource and the other set includes 3 SRS resources.

For the case where T ═ R (the number of transmit antennas is equal to the number of receive antennas), 2 SRS resource sets may be configured at most, each set including one SRS resource, and the number of SRS ports in each SRS resource may be 1,2, 4.

The terminal capability reported by the terminal in the current NR for indicating SRS antenna switching is indicated by the following parameters:

supported SRS-TxPortSwitch ENUMERATED { t1r2, t1r4, t2r4, t1r4-t2r4, tr-equivalent }; that is, the number of transceiving antenna ports for SRS antenna switching supported by the terminal is given by way of enumeration as one of options of '1T2R', '2T4R', '1T4R', '1T4R/2T4R', '1T ═ 1R', '2T ═ 2R', or '4T ═ 4R'.

For SRS configuration used for antenna alternate transmission, through configuring SRS resource sets, and reconfiguring corresponding number of SRS resources in each set, the configuration of corresponding number of receiving and transmitting antennas is realized.

However, for some small data packet services, the base station only needs to transmit in a single stream manner, and then the terminal can realize energy saving by turning off part of the receiving antennas. When the base station expects to transmit low-rate data to the terminal in the near future, the base station indicates that the terminal will only perform single-stream scheduling, and the terminal can use a few antennas to receive the downlink control channel and the traffic channel. When the base station expects to use multi-stream to transmit high-rate data for the user, the number of MIMO streams or antennas is indicated to the terminal, and the terminal starts the corresponding number of receiving antennas to realize the receiving of large data rate. Similarly for the number of transmit antennas, the terminal may be instructed to transmit using fewer antennas when only small packets need to be transmitted.

The implementation mode can be indicated to the terminal by the base station semi-statically or dynamically, depending on the scene and the gain.

According to the existing protocol, a base station configures a matched SRS antenna configuration for a terminal based on the terminal reporting capability so as to acquire downlink channel state information.

In consideration of the requirement of terminal energy saving, although the terminal reports the capability of supporting 2T4R, it is still possible for the base station to indicate the number of receiving or transmitting antennas smaller than the capability supported by the terminal in a dynamic or semi-static manner. In this case, it is necessary to determine how the terminal performs antenna rotation transmission using the configured antenna resources. The most intuitive way based on the existing protocol is to reconfigure the SRS Resource through RRC (Radio Resource Control) signaling every time the number of antennas changes, so as to realize the timely release of the SRS Resource. However, the problem with such an arrangement is 2:

1. for the change of the number of antennas indicated in the semi-static state, the method can be realized, but the RRC needs to be sent according to the change of the number of antennas, so that the network overhead is increased;

2. this approach is not feasible for MAC-CE (Media Access Control-Control Element) or dynamically indicated antenna number changes.

Disclosure of Invention

The invention aims to provide a sending configuration and sending method of a sounding reference signal, a terminal and network equipment, and aims to solve the problem that in the prior art, the number of receiving and sending antenna ports used by the terminal is not matched with the capability reported by the terminal and the network configuration of SRS resources.

In order to solve the above problem, an embodiment of the present invention provides a method for configuring sounding reference signal SRS, which is applied to a network side device, and includes:

configuring N sets of SRS configuration information for the terminal, wherein different pieces of SRS configuration information are respectively matched with the number of different receiving and transmitting antenna ports, or different pieces of SRS configuration information are respectively matched with the maximum layer number of different MIMO; n is an integer greater than 1;

wherein the SRS configuration information comprises an indication of SRS resources used for antenna alternate transmission.

Wherein the method further comprises:

receiving capability information reported by a terminal, wherein the capability information is used for indicating the number of receiving and transmitting antenna ports supported by the terminal;

and determining the number of different receiving and transmitting antenna ports which can be used by the terminal and are used for switching the SRS antenna according to the number of the receiving and transmitting antenna ports supported by the terminal.

Wherein, the different SRS configuration information is respectively matched with the number of different receiving and transmitting antenna ports which can be used by the terminal and used for switching the SRS antenna.

Wherein the method further comprises:

sending a first indication signaling to the terminal, wherein the first indication signaling is used for indicating the number of receiving antenna ports and/or the number of sending antenna ports used by the terminal; or, the first indication signaling is used for indicating the maximum number of layers of the MIMO.

The embodiment of the invention also provides a sending method of the sounding reference signal SRS, which is applied to a terminal and comprises the following steps:

receiving N sets of SRS configuration information configured for the terminal by network side equipment, wherein different pieces of SRS configuration information are respectively matched with the number of different receiving and transmitting antenna ports, or different pieces of SRS configuration information are respectively matched with the maximum layer number of different MIMO; wherein, the SRS configuration information comprises an indication of SRS resources used for antenna alternate transmission; n is an integer greater than 1;

selecting SRS resources indicated by SRS configuration information matched with the number of transmitting and receiving antenna ports used by the terminal to transmit SRS; or selecting the SRS resource indicated by the SRS configuration information matched with the maximum number of the MIMO layers configured by the network side equipment to transmit the SRS.

Wherein the method further comprises:

receiving a first indication signaling sent by a network side device, where the first indication signaling is used to indicate the number of receiving antenna ports and/or the number of sending antenna ports used by a terminal, or the first indication signaling is used to indicate the maximum number of layers of MIMO;

and determining the number of the receiving and transmitting antenna ports used by the terminal according to the first indication signaling.

receiving SRS configuration information configured for a terminal by network side equipment, wherein the SRS configuration information comprises an instruction of SRS resources which are used for antenna alternate transmission;

and according to the SRS resources indicated by the SRS configuration information, determining the SRS resources matched with the number of the receiving and transmitting antenna ports used by the terminal and transmitting the SRS.

Wherein, in a case that the number of SRS resources indicated by the SRS configuration information is not less than the number of SRS resources matching the number of transceiving antenna ports used by the terminal, the determining, according to the SRS resources indicated by the SRS configuration information, the number of SRS resources matching the number of transceiving antenna ports used by the terminal includes:

and selecting SRS resources matched with the number of transmitting and receiving antenna ports used by the terminal from the SRS resources indicated by the SRS configuration information.

Wherein, when the SRS resource quantity indicated by the SRS configuration information is smaller than the SRS resource quantity matched with the number of transceiving antenna ports used by the terminal, the determining, according to the SRS resource indicated by the SRS configuration information, the SRS resource matched with the number of transceiving antenna ports used by the terminal includes:

selecting a first part of SRS resources matched with the number of transmitting and receiving antenna ports used by the terminal from the SRS resources indicated by the SRS configuration information;

determining a second part of SRS resources matched with the number of transmitting and receiving antenna ports used by the terminal according to the first part of SRS resources and a target offset value; wherein the first portion of SRS resources and the second portion of SRS resources constitute SRS resources that are matched to a number of transmit-receive antenna ports used by the terminal.

Wherein the method further comprises:

and determining the number of the transceiving antennas used by the terminal according to the first indication signaling.

The embodiment of the present invention further provides a network side device, which includes a processor and a transceiver, where the processor is configured to execute the following processes:

Wherein the transceiver is to:

the processor is further configured to:

Wherein the transceiver is further configured to:

The embodiment of the present invention further provides a device for sending and configuring sounding reference signals SRS, which is applied to a network side device, and includes:

the configuration module is used for configuring N sets of SRS configuration information for the terminal, wherein different pieces of SRS configuration information are respectively matched with the number of different receiving and transmitting antenna ports, or different pieces of SRS configuration information are respectively matched with the maximum layer number of different MIMO (multiple input multiple output); n is an integer greater than 1;

The embodiment of the invention also provides a terminal, which comprises a processor and a transceiver, wherein the transceiver is used for executing the following processes:

the processor is further configured to:

Wherein the transceiver is further configured to:

the processor is further configured to:

The embodiment of the invention also provides a sending device of the sounding reference signal SRS, which is applied to a terminal and comprises the following steps:

the first receiving module is used for receiving N sets of SRS configuration information configured for the terminal by the network side equipment, wherein different pieces of SRS configuration information are respectively matched with the number of different receiving and transmitting antenna ports, or different pieces of SRS configuration information are respectively matched with the maximum layer number of different MIMO (multiple input multiple output); wherein, the SRS configuration information comprises an indication of SRS resources used for antenna alternate transmission; n is an integer greater than 1;

the terminal comprises a first sending module, a second sending module and a sending module, wherein the first sending module is used for selecting SRS resources indicated by SRS configuration information matched with the number of receiving and sending antenna ports used by the terminal to send SRS; or selecting the SRS resource indicated by the SRS configuration information matched with the maximum number of the MIMO layers configured by the network side equipment to transmit the SRS.

the processor is used for executing the following processes:

Wherein the processor is further configured to:

and selecting SRS resources matched with the number of the transmitting and receiving antenna ports used by the terminal from the SRS resources indicated by the SRS configuration information under the condition that the number of the SRS resources indicated by the SRS configuration information is not less than the number of the SRS resources matched with the number of the transmitting and receiving antenna ports used by the terminal.

Wherein the processor is further configured to:

when the number of SRS resources indicated by the SRS configuration information is smaller than the number of SRS resources matched with the number of transmitting and receiving antenna ports used by the terminal, selecting a first part of SRS resources matched with the number of transmitting and receiving antenna ports used by the terminal from the SRS resources indicated by the SRS configuration information;

determining a second part of SRS resources matched with the number of transmitting and receiving antenna ports used by the terminal according to the first part of SRS resources and a target offset value; wherein the first part of SRS resources and the second part of SRS resources form SRS resources matched with the number of transmitting and receiving antenna ports used by the terminal

Wherein the transceiver is further configured to:

the processor is further configured to:

a second receiving module, configured to receive SRS configuration information configured for a terminal by a network side device, where the SRS configuration information includes an instruction of SRS resources for antenna alternate transmission;

and a second sending module, configured to determine, according to the SRS resources indicated by the SRS configuration information, SRS resources that are matched to the number of transmit/receive antenna ports used by the terminal, and send the SRS.

An embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, where the computer program is executed by a processor to implement the steps in the method for configuring sounding reference signal SRS; alternatively, the program realizes the steps in the method for transmitting the sounding reference signal SRS as described above when executed by a processor.

The technical scheme of the invention at least has the following beneficial effects:

in the sending configuration and sending method of sounding reference signals, the terminal and the network device of the embodiment of the invention, the terminal is configured with N sets of SRS configuration information which are respectively matched with different numbers of receiving and sending antenna ports or different maximum numbers of MIMO layers, so that the terminal can determine SRS resources adaptive to the number of the semi-static or static changing receiving and sending antennas, the problem that the number of the receiving and sending antenna ports used by the terminal is not matched with the capability reported by the terminal and the network configuration are SRS resources is solved, and the network overhead can be reduced.

Drawings

Fig. 1 is a schematic diagram illustrating steps of a method for configuring sounding reference signal SRS according to an embodiment of the present invention;

fig. 2 is a flowchart illustrating a step of a method for sending a sounding reference signal SRS according to an embodiment of the present invention;

fig. 3 is a flow chart illustrating a second step of a method for transmitting a sounding reference signal SRS according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a network-side device according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram illustrating an apparatus for configuring sounding reference signal SRS transmission according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of a terminal according to an embodiment of the present invention;

fig. 7 is a schematic structural diagram of a sounding reference signal SRS transmission apparatus according to an embodiment of the present invention;

fig. 8 is a second schematic structural diagram of a sounding reference signal SRS transmission apparatus according to an embodiment of the present invention.

Detailed Description

In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1, an embodiment of the present invention provides a method for configuring sounding reference signal SRS, which is applied to a network side device, and includes:

step 11, configuring N sets of SRS configuration information for the terminal, wherein different pieces of SRS configuration information are respectively matched with the number of different receiving and transmitting antenna ports, or different pieces of SRS configuration information are respectively matched with the maximum layer number of different MIMO; n is an integer greater than 1;

It should be noted that the receiving and transmitting antenna port specifically includes: a receive antenna port and a transmit antenna port.

Each set of SRS configuration information in the N sets of SRS configuration information may be SRS resource set configuration information or SRS resource configuration information. Depending on which parameter is used to configure the antenna corresponding to the different numbers of transceiving antenna ports.

It should be noted that the sets of SRS configuration information are distinguished by the number of corresponding transceiving antenna ports or the maximum number of MIMO layers. For example, according to the current protocol, a maximum of 2 SRS resource sets with different resource types (e.g., periodic, semi-persistent, aperiodic) can be configured for the terminal capability of 1T2R, and each set has 2 SRS resources. Here, there may be at most 2 SRS resource set configuration information corresponding to one set of SRS configuration information of the transmitting/receiving antenna port 1T2R, and each set has 2 SRS resource configuration information. When the number of the receiving and transmitting antenna ports or the maximum number of the MIMO layers which can be supported by the terminal is multiple, multiple sets of SRS configuration information are correspondingly provided.

Further, in the above embodiment of the present invention, the method further includes:

Preferably, the different SRS configuration information is respectively matched with the number of different transceiving antenna ports for SRS antenna switching that can be used by the terminal.

For example, for a terminal supporting 2T4R (i.e. the number of transmit/receive antenna ports supported by the terminal is 2,4 transmit antennas and 4 receive antennas), the terminal may use 2T4R, 2T2R, 1T4R, 1T2R, 1T1R, 1T3R, 2T3R, etc., which are not necessarily enumerated herein, in view of the requirement of energy saving. Therefore, the network side device can configure the terminal with the SRS configuration information matching 2T4R, the SRS configuration information matching 2T2R, the SRS configuration information matching 1T4R, the SRS configuration information matching 1T2R, the SRS configuration information matching 1T1R, the SRS configuration information matching 1T3R, the SRS configuration information matching 2T3R, and the like at the same time, and the terminal selects the matched SRS configuration information for SRS transmission according to the number of currently used transmit/receive antenna ports.

For another example, the SRS configuration information matched with 2T4R includes: 2 sets of SRS resources with different resource types (e.g. periodic, semi-persistent, aperiodic), each set having 2 SRS resources on different symbols, and each SRS resource includes 2 SRS ports, and the SRS ports in the two SRS resources are different. The SRS configuration information matched with 1T2R includes: each set has 2 SRS resources, and each SRS resource is transmitted on a different symbol, each SRS resource includes a single SRS port, and SRS ports in two SRS resources are different.

For example, as shown in table 1, the correspondence between the capability information of the terminal and the number of transmitting and receiving antennas used by the terminal is shown.

TABLE 1

It should be noted that, for the capability information that is not shown in table 1, for example, the capability information reported by the terminal is 2T4R, the number of the transceiving antennas that can be used by the terminal further includes: 1T3R, 2T3R, etc. are also equally applicable to this application and are not enumerated here.

As an alternative embodiment, the method further comprises:

In a specific implementation process, the network side device may explicitly indicate, through a first indication signaling, the number of receive antenna ports and/or the number of transmit antenna ports used by the terminal, or may implicitly indicate, through the first indication signaling, the number of receive antennas used by the terminal, that is, the first indication signaling is used to indicate the maximum number of layers of MIMO.

For example, the terminal may receive using the same number of receive antennas as the maximum number of layers of MIMO indicated by the first indication signaling, i.e., the number of receive antennas is implicitly indicated. In this case, the terminal may infer the number of receiving antennas of the terminal according to the SRS configuration information configured by the network side device; the terminal may also select corresponding SRS configuration information according to the maximum number of MIMO layers and the number of transmit antennas configured by the network side device to perform SRS transmission.

In summary, in the embodiments of the present invention, the network side device configures N sets of SRS configuration information for the terminal, and the SRS configuration information is respectively matched with the number of different transceiving antenna ports or the maximum number of different MIMO layers, so that the terminal can determine the SRS resource adapted to the number of the semi-static or static transceiving antennas, solve the problem that the number of the transceiving antenna ports used by the terminal is not matched with the capability reported by the terminal and the SRS resource configured by the network, and reduce the network overhead.

As shown in fig. 2, an embodiment of the present invention further provides a method for sending a sounding reference signal SRS, which is applied to a terminal, and includes:

step 21, receiving N sets of SRS configuration information configured for the terminal by the network side equipment, wherein different pieces of SRS configuration information are respectively matched with the number of different receiving and transmitting antenna ports, or different pieces of SRS configuration information are respectively matched with the maximum layer number of different MIMO; wherein, the SRS configuration information comprises an indication of SRS resources used for antenna alternate transmission; n is an integer greater than 1;

step 22, selecting the SRS resource indicated by the SRS configuration information matched with the number of the receiving and transmitting antenna ports used by the terminal to transmit the SRS; or selecting the SRS resource indicated by the SRS configuration information matched with the maximum number of the MIMO layers configured by the network side equipment to transmit the SRS.

As an alternative embodiment, the method further comprises:

As shown in fig. 3, an embodiment of the present invention further provides a method for sending a sounding reference signal SRS, which is applied to a terminal, and includes:

step 31, receiving SRS configuration information configured for the terminal by the network side device, where the SRS configuration information includes an instruction of SRS resources for antenna alternate transmission;

and step 32, determining the SRS resources matched with the number of the receiving and transmitting antenna ports used by the terminal according to the SRS resources indicated by the SRS configuration information, and transmitting the SRS.

And the network side equipment configures the SRS configuration information for the terminal according to the capability information reported by the terminal (the capability information is used for indicating the number of the receiving and transmitting antenna ports supported by the terminal). For example, for a terminal supporting 2T4R (that is, the number of transmit/receive antenna ports supported by the terminal is 2,4 transmit antennas and 4 receive antennas), the network side device configures SRS configuration information matched with 2T4R for the terminal; the SRS configuration information matched with 2T4R includes: 2 sets of SRS resources with different resource types (e.g. periodic, semi-persistent, aperiodic), each set having 2 SRS resources on different symbols, and each SRS resource includes 2 SRS ports, and the SRS ports in the two SRS resources are different.

As shown in table 2, an implementation example is described, when the above method is actually used, the method is not necessarily limited to the corresponding resources selected in the table, for example, when the capability is 2T4R and the actually used capability is 1T2R, the currently selected port is the first port in each SRS, and the 2 nd port may also be selected. In fact, only the parameters configured in each of the 2 resources are needed.

TABLE 2

Where v represents the number of transmit and receive antennas that the terminal can use.

As an optional embodiment, in a case that the number of SRS resources indicated by the SRS configuration information is not less than the number of SRS resources matching the number of transmit/receive antenna ports used by the terminal, step 32 includes:

For example, when the terminal receives SRS configuration information of 2T4R and the number of antenna transmissions and receptions used by the terminal is 1T2R, 2 SRS resources are obtained by using the resource of the first port in each of the 2 SRS resources in the 2T4R configuration, and each SRS resource includes a single SRS port, so that the SRS resource of 1T2R is obtained.

As another optional embodiment, in a case that the number of SRS resources indicated by the SRS configuration information is smaller than the number of SRS resources matching the number of transceiving antenna ports used by the terminal, step 32 includes:

For example, when the number of antennas actually used is 1T4R for a terminal capability of 2T4R, the SRS resource configured by the SRS configuration information needs to be adjusted. When the number of antennas actually used is 1T4R, 4 SRS resources are needed to perform antenna transmission to obtain all downlink information. However, for a 2T4R capable terminal, only 2 resources are configured, and each SRS resource has 2 SRS ports. At this time, 4 SRS resources for antenna switching need to be obtained through 2 SRS resources of 2T4R configured. Specifically, only the first SRS port is taken as two of the 4 SRS resources for the 2 configured SRS resources, and the other two SRS resources are obtained by shifting the existing two SRS resources (for example, a target offset value) through adjusting a slot offset (for an aperiodic SRS) or a periodic offset (for a semi-persistent or periodic SRS). For example, when two existing SRS resources are located in the same slot, two new SRS resources can be obtained by increasing the slot offset by N (N is an integer), so that a total of 4 SRS resources are obtained. For another example, when two existing SRS resources are located in different time slots, the time slot offset may be adjusted to obtain two new SRS resources, or the starting position may be adjusted to make the two new SRS resources and the two existing SRS resources located on different symbols, so as to obtain a total of 4 SRS resources.

Generally, T ═ R can only degrade to fewer ports of T ═ R, e.g., 4T4R can be reduced to 2T 2R. But it is also possible if support is reduced to 1T2R, requiring 4 ports configured for 4T4R to be converted into 2 resources. Since only one resource is configured during configuration, one implementation manner is to predefine a rule for extending SRS resources, for example, the SRS resources in the SRS resource set are adjusted by slot offset (for aperiodic SRS) or periodic offset (for semi-persistent or periodic SRS) to obtain the extended SRS resources, for example, an offset value of one slot is provided with respect to the configured SRS resources.

For example, the value of the slot offset or the period offset corresponding to the configured SRS resource is N, then N + T is predefined as another SRS resource, and T is an integer value. It should be noted that the obtained values need to be the respective maximum values of the modulus, so as to avoid exceeding the value range. And the other parameter configurations of the expanded SRS resource except the relevant values of the time slot offset or the period offset are the same as the values of the configured SRS resource.

For example, the terminal may receive using the same number of receive antennas as the maximum number of layers of MIMO indicated by the first indication signaling, i.e., the number of receive antennas is implicitly indicated. In this case, the terminal may infer the number of receiving antennas of the terminal according to the SRS configuration information configured by the network side device; the terminal may also select a corresponding SRS resource according to the maximum number of MIMO layers and the number of transmit antennas configured by the network side device to perform SRS transmission.

In summary, in the embodiments of the present invention, according to the SRS resources indicated by the SRS configuration information configured for the terminal by the network side device, the SRS resources matched with the number of the transmit/receive antenna ports used by the terminal are selected and the SRS is transmitted, so that the terminal can determine the SRS resources matched with the number of the transmit/receive antennas that change semi-statically or statically, the problem that the number of the transmit/receive antenna ports used by the terminal is not matched with the capability reported by the terminal and the SRS resources of the network configuration is solved, and the network overhead can be reduced.

As shown in fig. 4, an embodiment of the present invention further provides a network side device, which includes a processor 400 and a transceiver 410, where the processor 400 is configured to perform the following processes:

Optionally, in the foregoing embodiment of the present invention, the transceiver 410 is configured to:

the processor is further configured to:

Optionally, in the above embodiment of the present invention, the different SRS configuration information is respectively matched with the number of different transceiving antenna ports that can be used by the terminal for SRS antenna switching.

Optionally, in the foregoing embodiment of the present invention, the transceiver 410 is further configured to:

It should be noted that, the network side device provided in the foregoing embodiment of the present invention is a network side device capable of executing the above method for configuring sounding reference signal SRS, and all embodiments of the method for configuring sounding reference signal SRS are applicable to the network side device, and can achieve the same or similar beneficial effects.

As shown in fig. 5, an embodiment of the present invention further provides a device for configuring sounding reference signal SRS, which is applied to a network side device, and includes:

a configuration module 51, configured to configure N sets of SRS configuration information for the terminal, where different SRS configuration information are respectively matched with the number of different transmit/receive antenna ports, or different SRS configuration information are respectively matched with the maximum number of different MIMO layers; n is an integer greater than 1;

Optionally, in the above embodiment of the present invention, the apparatus further includes:

the terminal comprises a capacity receiving module, a capacity judging module and a capacity judging module, wherein the capacity receiving module is used for receiving capacity information reported by the terminal, and the capacity information is used for indicating the number of receiving and transmitting antenna ports supported by the terminal;

and the number determining module is used for determining the number of different receiving and transmitting antenna ports which can be used by the terminal and are used for switching the SRS antenna according to the number of the receiving and transmitting antenna ports supported by the terminal.

a signaling sending module, configured to send a first indication signaling to the terminal, where the first indication signaling is used to indicate a number of receiving antenna ports and/or a number of sending antenna ports used by the terminal; or, the first indication signaling is used for indicating the maximum number of layers of the MIMO.

It should be noted that, the apparatus for configuring sounding reference signal SRS according to the foregoing embodiments of the present invention is an apparatus capable of executing the method for configuring sounding reference signal SRS, and all embodiments of the method for configuring sounding reference signal SRS are applicable to the apparatus and can achieve the same or similar beneficial effects.

An embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored, and when the program is executed by a processor, the process in the above-mentioned method for sending and configuring a sounding reference signal SRS is implemented, and the same technical effect can be achieved, and in order to avoid repetition, details are not repeated here. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.

As shown in fig. 6, an embodiment of the present invention further provides a terminal, which includes a processor 600, a transceiver 610, and a user interface 620, where the transceiver 610 is configured to perform the following processes:

the processor 600 is further configured to:

Optionally, in the foregoing embodiment of the present invention, the transceiver 610 is further configured to:

the processor 600 is further configured to:

It should be noted that, the terminal provided in the above embodiments of the present invention is a terminal capable of executing the above-mentioned method for transmitting the sounding reference signal SRS, and all embodiments of the above-mentioned method for transmitting the sounding reference signal SRS are applicable to the terminal, and can achieve the same or similar beneficial effects.

As shown in fig. 7, an apparatus for transmitting a sounding reference signal SRS according to an embodiment of the present invention is applied to a terminal, and includes:

a first receiving module 71, configured to receive N sets of SRS configuration information configured for the terminal by the network side device, where different SRS configuration information are respectively matched with the number of different transmit/receive antenna ports, or different SRS configuration information are respectively matched with the maximum number of layers of different MIMO; wherein, the SRS configuration information comprises an indication of SRS resources used for antenna alternate transmission; n is an integer greater than 1;

a first sending module 72, configured to select an SRS resource indicated by SRS configuration information that matches the number of transmit/receive antenna ports used by the terminal to send an SRS; or selecting the SRS resource indicated by the SRS configuration information matched with the maximum number of the MIMO layers configured by the network side equipment to transmit the SRS.

a first signaling receiving module, configured to receive a first indication signaling sent by a network side device, where the first indication signaling is used to indicate a number of receiving antenna ports and/or a number of sending antenna ports used by a terminal, or the first indication signaling is used to indicate a maximum number of layers of MIMO;

and the first determining module is used for determining the number of the receiving and transmitting antenna ports used by the terminal according to the first indication signaling.

It should be noted that, the apparatus for transmitting a sounding reference signal SRS according to the above-mentioned embodiments of the present invention is an apparatus capable of executing the above-mentioned method for transmitting a sounding reference signal SRS, and all the embodiments of the above-mentioned method for transmitting a sounding reference signal SRS are applicable to the apparatus and can achieve the same or similar beneficial effects.

An embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored, and when the computer program is executed by a processor, the computer program implements each process in the above-described method for sending an SRS for sounding reference signals, and can achieve the same technical effect, and in order to avoid repetition, details are not repeated here. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.

the processor 600 is configured to perform the following processes:

Optionally, in the foregoing embodiment of the present invention, the processor 600 is further configured to:

the processor 600 is further configured to:

As shown in fig. 8, an apparatus for transmitting a sounding reference signal SRS according to an embodiment of the present invention is applied to a terminal, and includes:

a second receiving module 81, configured to receive SRS configuration information configured for the terminal by the network side device, where the SRS configuration information includes an instruction of SRS resources for antenna alternate transmission;

a second sending module 82, configured to determine, according to the SRS resources indicated by the SRS configuration information, SRS resources that match the number of transmit/receive antenna ports used by the terminal, and send an SRS.

Optionally, in the foregoing embodiment of the present invention, the second sending module includes:

a first sub-module, configured to select, from the SRS resources indicated by the SRS configuration information, an SRS resource that matches the number of transmit/receive antenna ports used by the terminal when the number of SRS resources indicated by the SRS configuration information is not less than the number of SRS resources that matches the number of transmit/receive antenna ports used by the terminal.

a second sub-module, configured to select, from the SRS resources indicated by the SRS configuration information, a first portion of SRS resources that matches the number of transceiving antenna ports used by the terminal when the number of SRS resources indicated by the SRS configuration information is smaller than the number of SRS resources that matches the number of transceiving antenna ports used by the terminal;

a third sub-module, configured to determine, according to the first portion of SRS resources and a target offset value, a second portion of SRS resources that matches the number of transmit/receive antenna ports used by the terminal; wherein the first portion of SRS resources and the second portion of SRS resources constitute SRS resources that are matched to a number of transmit-receive antenna ports used by the terminal.

a second signaling receiving module, configured to receive a first indication signaling sent by a network side device, where the first indication signaling is used to indicate a number of receiving antenna ports and/or a number of sending antenna ports used by a terminal, or the first indication signaling is used to indicate a maximum number of layers of MIMO;

and the second determining module is used for determining the number of the receiving and transmitting antennas used by the terminal according to the first indication signaling.

As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-readable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block or blocks.

These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. A sending configuration method of a Sounding Reference Signal (SRS) is applied to network side equipment, and is characterized by comprising the following steps:

2. The method of claim 1, further comprising:

3. The method of claim 2, wherein different SRS configuration information is respectively matched to different numbers of transceiving antenna ports that can be used by the terminal for SRS antenna switching.

4. The method of claim 1, further comprising:

5. A sending method of Sounding Reference Signal (SRS) is applied to a terminal, and is characterized by comprising the following steps:

6. The method of claim 5, further comprising:

7. A sending method of Sounding Reference Signal (SRS) is applied to a terminal, and is characterized by comprising the following steps:

8. The method according to claim 7, wherein in a case that the number of SRS resources indicated by the SRS configuration information is not less than the number of SRS resources matching the number of transceiving antenna ports used by the terminal, the determining SRS resources matching the number of transceiving antenna ports used by the terminal according to the SRS resources indicated by the SRS configuration information includes:

9. The method according to claim 7, wherein in a case that the number of SRS resources indicated by the SRS configuration information is smaller than the number of SRS resources matching the number of transceiving antenna ports used by the terminal, the determining SRS resources matching the number of transceiving antenna ports used by the terminal according to the SRS resources indicated by the SRS configuration information includes:

10. The method of claim 7, further comprising:

11. A network side device comprising a processor and a transceiver, wherein the processor is configured to perform the following processes:

12. The network-side device of claim 11, wherein the transceiver is configured to:

the processor is further configured to:

13. The network-side device of claim 12, wherein different SRS configuration information is respectively matched to the number of different transceiving antenna ports that can be used by the terminal for SRS antenna switching.

14. The network-side device of claim 11, wherein the transceiver is further configured to:

15. A Sounding Reference Signal (SRS) transmission configuration device applied to a network side device is characterized by comprising:

16. A terminal comprising a processor and a transceiver, wherein the transceiver is configured to perform the following:

the processor is further configured to:

17. The terminal of claim 16, wherein the transceiver is further configured to:

the processor is further configured to:

18. A sending device of Sounding Reference Signal (SRS) is applied to a terminal, and is characterized by comprising:

19. A terminal comprising a processor and a transceiver, wherein the transceiver is configured to perform the following:

the processor is used for executing the following processes:

20. The terminal of claim 19, wherein the processor is further configured to:

21. The terminal of claim 19, wherein the processor is further configured to:

22. The terminal of claim 19, wherein the transceiver is further configured to:

the processor is further configured to:

23. A sending device of Sounding Reference Signal (SRS) is applied to a terminal, and is characterized by comprising:

24. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the method for configuring sounding reference signal, SRS, according to any one of claims 1 to 4; or, the program is executed by a processor to implement the steps in the method for transmitting sounding reference signal, SRS, according to claim 5 or 6; alternatively, the program realizes the steps in the method for transmitting sounding reference signal, SRS, according to any of claims 7 to 10 when executed by a processor.