WO2017050155A1

WO2017050155A1 - Method and device for transmitting sounding reference signal, and signaling configuration method and device

Info

Publication number: WO2017050155A1
Application number: PCT/CN2016/098830
Authority: WO
Inventors: 弓宇宏
Original assignee: 中兴通讯股份有限公司
Priority date: 2015-09-25
Filing date: 2016-09-13
Publication date: 2017-03-30
Also published as: CN106559277A

Abstract

Provided in an embodiment of the invention are a method and device for transmitting a sounding reference signal, and a signaling configuration method and device. The method comprises: transmitting, according to a preset rule, a sounding reference signal (SRS) over N subsets of antennas, wherein N is a positive integer, and each subset of antennas at least comprises an antenna; and asynchronously transmitting the SRS over at least two subsets of antennas among the N subsets of antennas. The embodiment of the invention solves a problem in which related techniques do not support switching between multiple antennas, and between more than two antennas in particular, for SRS transmission.

Description

Method and device for transmitting sounding reference signal, signaling configuration method and device

Technical field

The embodiments of the present invention relate to the field of communications, and in particular, to a method and a device for transmitting a sounding reference signal, and a signaling configuration method and device.

Background technique

In the Long Term Evolution (LTE), the Sounding Reference Signal (SRS) is mainly used for the measurement of the uplink channel quality.

In the frequency domain, SRS transmission needs to cover the frequency band of interest in the frequency domain. This can be achieved by two methods: one is to cover the entire frequency band by transmitting a large enough SRS, and the other is to transmit multiple narrow bands. SRS, and frequency hopping in the frequency domain, and then a series of sent SRS combined, can cover the entire bandwidth.

Within the same SRS bandwidth, multiple users can use different cyclic shifts (Cyclic Shift, CS for short) on the same frequency comb (comb), send SRS by code division multiplexing, or comb in different spectrums. The SRS is transmitted by frequency division multiplexing. Specifically, in an LTE system, a user who transmits an SRS within a certain SRS bandwidth (usually an integer multiple of four physical resource blocks) has eight cyclic shifts and two available spectrum combs. So the user has a total of 16 resources that can be used to send SRS. These resources are sufficient for single input single output (SISO) or single input multiple output (SIMO), but for multiple input multiple output (Multiple Input Multiple Output, Referring to MIMO for short, it may face the problem of insufficient SRS resources caused by multiple antennas. LTE supports two antenna users to use the antenna selection function to transmit SRS, that is, two-antenna SRS handover transmission. That is, for a given SRS bandwidth, SRS is transmitted on only one antenna at the same time, and two antennas transmit SRS in turn to complete channel quality of two antenna SRS. Information detection. LTE-A introduces aperiodic SRS in the R10 phase. The aperiodic SRS improves the flexible configuration and effective utilization of SRS resources through dynamic triggering, but does not fundamentally improve SRS resources. Source capacity. With the introduction of Massive Multiple Input Multiple Output (Massive MIMO) technology, SRS resource capacity is once again challenged.

In a Time Division Duplexing (TDD) system, the base station can directly obtain downlink channel quality information through SRS measurement because of the reciprocity of the uplink and downlink physical channels. This can avoid excessive feedback overhead of the user and improve the downlink data transmission quality and capability of the base station. However, although the downlink has already supported multiple transmissions, the uplink only supports SRS handover between the two antennas of the user. In the case where the number of downlink receiving antennas and the number of uplink transmitting antennas are different, the base station cannot obtain all of the SRS detections. Downstream channel status information.

In view of the above problems in the related art, there is currently no effective solution.

Summary of the invention

An embodiment of the present invention provides a method and a device for transmitting a sounding reference signal, and a signaling configuration method and device, so as to at least solve the problem that the related art cannot support SRS switching between multiple antennas, especially multiple antennas with more than two antennas. problem.

According to an aspect of the embodiments of the present invention, a method for transmitting a sounding reference signal is provided, comprising: transmitting a sounding reference signal SRS on a subset of N antennas according to a predefined rule, where N is a positive integer, and each antenna is The set includes at least one antenna; the SRS is transmitted at different times on at least two antenna subsets of the N antenna subsets.

Optionally, the predefined rule includes: when the frequency hopping function of the SRS is not enabled, the transmit antenna subset index a(n _SRS ) where the SRS transmission is performed after the nth _SRS times is determined according to the following formula:

a(n _SRS )=n _SRS mod N.

Optionally, the predefined rule includes: when the frequency hopping function of the SRS is enabled and the number of subbands K that are allowed to be hopped is an odd number, the nth _SRS times the transmit antenna subset index a where the SRS transmission is located (n _SRS ) is determined according to the following formula:

a(n _SRS )=n _SRS mod N; or,

Optionally, the predefined rule includes: when the frequency hopping function of the SRS is enabled and the number of subbands K that are allowed to hop are even and K is an integer multiple of 4, the sending of the n _Sth SRS transmission is performed. The antenna subset index a(n _SRS ) is determined as follows:

or,

Optionally, the predefined rule includes: when the sounding reference signal hopping function is enabled and the number of subbands K that are allowed to hop are even and K is a non-integer multiple of 4, the nth _SRS secondary SRS transmission is located The transmit antenna subset index a(n _SRS ) is determined as follows:

or,

Optionally, the predefined rule includes: transmitting a periodic SRS on the N antenna subsets.

Optionally, the predefined rule includes: sending an aperiodic SRS on the N antenna subsets, where one-time triggering N times aperiodic SRS transmission is supported.

Optionally, the N times of aperiodic SRS transmissions are respectively sent on N consecutive uplink transmission symbols in the special subframe.

Optionally, before transmitting the sounding reference signal on the N antenna subsets according to a predefined rule, the method further comprises: dividing the transmitting antenna into the N antenna subsets.

Optionally, before the sounding reference signal is sent on the N antenna subsets according to the predefined rule, the method further includes: receiving signaling on the base station side, where the signaling is used to indicate that the SRS is as described Predefined rules are sent on the N subsets of antennas.

Optionally, the predefined rule includes: determining, according to the enabling or not of the SRS frequency hopping function and the number of times the SRS is transmitted, determining a transmit antenna subset index in which the SRS is transmitted.

Optionally, in a case that the frequency hopping function is enabled, the predefined rule includes: determining, according to at least a number of subbands that allow frequency hopping and a number of times of transmitting the SRS, a subset of transmitting antennas in which the SRS is transmitted. index.

Optionally, the N is 4 and there is one antenna in each antenna subset.

Optionally, the predefined rule includes: selecting, according to the downlink channel state information, selecting the antenna subset corresponding to the best downlink channel to send the SRS.

According to another aspect of the present invention, a signaling configuration method for sounding a reference signal is provided, including: transmitting, to a terminal, the terminal to send, according to a predefined rule, a subset of N antennas of the terminal according to a predefined rule. Signaling of the sounding reference signal SRS, wherein N is a positive integer, each antenna subset includes at least one antenna; and the SRS is transmitted at different times on at least two antenna subsets of the N antenna subsets.

a(n _SRS )=n _SRS mod N.

a(n _SRS )=n _SRS mod N; or,

or,

Optionally, sending, to the terminal, the signaling for instructing the terminal to send the sounding reference signal SRS on the N antenna subsets of the terminal according to a predefined rule comprises: sending 1-bit high-level signaling to the terminal, where The 1-bit high-layer signaling is used to indicate to the terminal whether to send the SRS on the N antenna subsets of the terminal according to the predefined rule.

Optionally, sending, to the terminal, signaling that the terminal sends the sounding reference signal SRS on the N antenna subsets of the terminal according to a predefined rule includes: reusing an existing protocol for indicating to the terminal Whether to enable the antenna selection function of the SRS on the two antennas, wherein the antenna selection function is used to indicate to the terminal whether to transmit the SRS on the N antenna subsets of the terminal according to the predefined rule.

Optionally, sending, to the terminal, signaling that the terminal sends the sounding reference signal SRS on the N antenna subsets of the terminal according to a predefined rule comprises: sending 2-bit high-level signaling to the terminal, where The 2-bit high-level signaling indicates to the terminal whether to send the SRS and the pre-defined rules adopted on the N antenna subsets of the terminal according to the predefined rule.

Optionally, sending, to the terminal, the signaling for instructing the terminal to send the sounding reference signal SRS on the N antenna subsets of the terminal according to a predefined rule comprises: sending 1-bit high-level signaling to the terminal, where The 1-bit high layer signaling is used to indicate to the terminal a predefined rule that the SRS uses to transmit on the N antenna subsets.

Optionally, the 1-bit high-layer signaling is sent to the terminal, where the 1-bit high-layer signaling is used to indicate to the terminal whether the aperiodic sounding reference signal is enabled according to a predefined rule in the N antennas. Sending on the set; if the 1-bit high-layer signaling indicates that the terminal enables the aperiodic sounding reference signal to be transmitted on the N antenna subsets according to a predefined rule, reusing the existing one for triggering the aperiodic SRS transmission The bit physical layer signaling is used to trigger the aperiodic SRS to perform consecutive N transmissions on the valid SRS resource; wherein the valid SRS resource finger can be used for Sending the SRS resource of the aperiodic SRS. .

According to still another aspect of the embodiments of the present invention, a device for transmitting a sounding reference signal is provided, comprising: a first sending module, configured to send a sounding reference signal SRS on a subset of N antennas according to a predefined rule, where A positive integer, each antenna subset includes at least one antenna; the SRS is transmitted at different times on at least two antenna subsets of the N antenna subsets.

a(n _SRS )=n _SRS mod N.

a(n _SRS )=n _SRS mod N; or,

or,

Optionally, the predefined rule includes: when the sounding reference signal frequency hopping function is enabled and the number of subbands K that are allowed to hop are even and K is a non-integer multiple of 4, the nth _SRS secondary SRS transmission is located The transmit antenna subset index a(n _SRS ) is determined as follows:

or,

Optionally, before transmitting the sounding reference signal on the N antenna subsets according to a predefined rule, the apparatus further comprises: a dividing module configured to divide the transmitting antenna into the N antenna subsets.

Optionally, the N is 4 and there is one antenna in each antenna subset.

According to still another aspect of the present invention, a signaling configuration apparatus for sounding a reference signal is provided, including: a second sending module, configured to send, to the terminal, the terminal to indicate that the terminal is in the terminal according to a predefined rule. Signaling for transmitting a sounding reference signal SRS on a subset of N antennas, wherein N is a positive integer, each antenna subset includes at least one antenna; and at least two antenna subsets of the SRS in the N antenna subset Not sent at the same time.

a(n _SRS )=n _SRS mod N.

a(n _SRS )=n _SRS mod N; or,

or,

Optionally, the second sending module further includes: a first sending unit, configured to send 1-bit high-layer signaling to the terminal, where the 1-bit high-layer signaling is used to indicate to the terminal whether The predefined rules send SRS on the N antenna subsets of the terminal.

Optionally, the second sending module further includes: a first reusing unit, configured to reuse an antenna selection function in the existing protocol for indicating to the terminal whether to enable the SRS on the two antennas, wherein the antenna selection function And means for indicating to the terminal whether to send an SRS on the N antenna subsets of the terminal according to the predefined rule.

Optionally, the second sending module further includes: a second sending unit, configured to send 2-bit high-layer signaling to the terminal, where the 2-bit high-layer signaling indicates to the terminal whether according to the predefined The rule sends the SRS on the N antenna subsets of the terminal and the predefined rule.

Optionally, the second sending module further includes: a third sending unit, configured to send 1-bit high-layer signaling to the terminal, where the 1-bit high-layer signaling is used to indicate to the terminal that the SRS is in the The predefined rules used for transmission on the N antenna subsets.

Optionally, the second sending module further includes: a fourth sending unit, configured to send 1-bit high-layer signaling to the terminal, where the 1-bit high-layer signaling is used to indicate to the terminal whether to enable non- The periodic sounding reference signal is sent on the N antenna subsets according to a predefined rule; the second reuse unit is configured to enable the terminal to enable the aperiodic sounding reference signal according to a predefined rule if the one-bit high layer signaling indicates that the terminal is in accordance with a predefined rule. Transmitting on the N antenna subsets, reusing the existing 1-bit physical layer signaling used to trigger the aperiodic SRS transmission for triggering the aperiodic SRS to perform consecutive N transmissions on the valid SRS resources; The valid SRS resource refers to an SRS resource that can be used to transmit the aperiodic SRS. .

In the embodiment of the present invention, a computer storage medium is further provided, and the computer storage medium may store an execution instruction for executing a method for transmitting a sounding reference signal in the foregoing embodiment.

According to the embodiment of the present invention, the antenna of the terminal is divided into N antenna subsets, and each antenna subset includes at least one antenna, and then the sounding reference signal SRS is transmitted on the N antenna subsets according to a predefined rule, where The SRS is transmitted at different times on at least two antenna subsets of the N antenna subsets, and solves the problem that the SRS handover transmission between multiple antennas, especially multiple antennas of two antennas or more, cannot be supported in the related art.

DRAWINGS

The drawings described herein are intended to provide a further understanding of the invention, and are intended to be a part of the invention. In the drawing:

1 is a flowchart of a method of transmitting a sounding reference signal according to an embodiment of the present invention;

2 is a flowchart of a signaling configuration method of sounding reference signals according to an embodiment of the present invention;

3 is a block diagram showing the structure of a transmitting apparatus for detecting a reference signal according to an embodiment of the present invention;

4 is a structural block diagram of a signaling configuration apparatus for sounding reference signals according to an embodiment of the present invention;

FIG. 5A is a schematic diagram of a four-antenna SRS transmission method when the number of SRS frequency hopping subbands is 2 according to an embodiment of the present invention; FIG.

5B is a schematic diagram of a method for transmitting a four-antenna SRS when the number of SRS hopping subbands is 3 according to an embodiment of the present invention;

FIG. 5C is a schematic diagram of a four-antenna SRS transmission method when the number of SRS hopping subbands is 4 according to an embodiment of the present invention; FIG.

5D is a schematic diagram of a method for transmitting a four-antenna SRS when the number of SRS frequency hopping subbands is 6 according to an embodiment of the present invention;

FIG. 6A is a schematic diagram of a four-antenna SRS transmission method when the number of SRS frequency hopping subbands is 2 according to the embodiment of the present invention; FIG.

6B is a schematic diagram of a method for transmitting a four-antenna SRS when the number of SRS hopping subbands is 3 according to Embodiment 2 of the present invention;

6C is a schematic diagram of a method for transmitting a four-antenna SRS when the number of SRS frequency hopping subbands is 4 according to Embodiment 2 of the present invention;

6D is a schematic diagram of a four-antenna SRS transmission method when the number of SRS frequency hopping subbands is 6 according to the embodiment of the present invention;

7A is a schematic diagram of a four-antenna SRS transmission method when the number of SRS frequency hopping subbands is 2 according to Embodiment 3 of the present invention;

7B is a schematic diagram of a method for transmitting a four-antenna SRS when the number of SRS hopping subbands is 3 according to Embodiment 3 of the present invention;

7C is a schematic diagram of a four-antenna SRS transmission method when the number of SRS hopping subbands is 4 according to Embodiment 3 of the present invention;

7D is a schematic diagram of a four-antenna SRS transmission method when the number of SRS frequency hopping subbands is 6 according to Embodiment 3 of the present invention;

FIG. 8A is a four-antenna when the number of SRS frequency hopping subbands is 2 according to an embodiment of the present invention. Schematic diagram of SRS transmission method;

FIG. 8B is a schematic diagram of a four-antenna SRS transmission method when the number of SRS hopping sub-bands is three according to an embodiment of the present invention; FIG.

FIG. 8C is a schematic diagram of a four-antenna SRS transmission method when the number of SRS frequency hopping subbands is 4 according to an embodiment of the present invention; FIG.

8D is a schematic diagram of a four-antenna SRS transmission method when the number of SRS frequency hopping subbands is 6 according to an embodiment of the present invention;

9A is a schematic diagram of a method for transmitting a four-antenna SRS when the number of SRS hopping subbands is 2 according to Embodiment 5 of the present invention;

9B is a schematic diagram of a method for transmitting a four-antenna SRS when the number of SRS hopping subbands is 3 according to Embodiment 5 of the present invention;

9C is a schematic diagram of a four-antenna SRS transmission method when the number of SRS frequency hopping subbands is 4 according to Embodiment 5 of the present invention;

9D is a schematic diagram of a four-antenna SRS transmission method when the number of SRS frequency hopping subbands is 6 according to an embodiment of the present invention;

FIG. 10A is a schematic diagram of a four-antenna SRS transmission method when the number of SRS frequency hopping subbands is 2 according to an embodiment of the present invention; FIG.

FIG. 10B is a schematic diagram of a four-antenna SRS transmission method when the number of SRS hopping subbands is three according to an embodiment of the present invention; FIG.

10C is a schematic diagram of a four-antenna SRS transmission method when the number of SRS frequency hopping subbands is 4 according to an embodiment of the present invention;

FIG. 10D is a schematic diagram of a four-antenna SRS transmission method when the number of SRS frequency hopping subbands is six according to an embodiment of the present invention.

detailed description

The invention will be described in detail below with reference to the drawings in conjunction with the embodiments. It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict.

It is to be understood that the terms "first", "second" and the like in the specification and claims of the present invention are used to distinguish similar objects, and are not necessarily used to describe a particular order or order.

In this embodiment, a method for transmitting a sounding reference signal is provided. FIG. 1 is a flowchart of a method for transmitting a sounding reference signal according to an embodiment of the present invention. As shown in FIG. 1, the flow includes the following steps:

Step S102: The terminal sends the sounding reference signal SRS on the N antenna subsets according to a predefined rule, where N is a positive integer, each antenna subset includes at least one antenna, and the SRS is at least two antennas in the N antenna subset. The subset is not sent at the same time.

It is known from the above step S102 that the antenna of the terminal is divided into N antenna subsets, and each antenna subset includes at least one antenna, and then the sounding reference signal SRS is transmitted on the N antenna subsets according to a predefined rule, where The SRS is transmitted at different times on at least two antenna subsets of the N antenna subsets, that is, the SRS can be switched and transmitted on a subset of the plurality of transmit antennas, so that the same SRS resource can be applied to different SRS antennas. Therefore, the problem of SRS handover transmission between multiple antennas, especially multiple antennas of two antennas or more, cannot be supported in the related art.

In an optional implementation manner of this embodiment, the predefined rules involved in this embodiment may include the following:

(1) When the frequency hopping function of the SRS is not enabled, the transmit antenna subset index a(n _SRS ) where the nth _SRS secondary SRS transmission is located is determined according to the following formula:

a(n _SRS )=n _SRS mod N.

(2): When the frequency hopping function of the SRS is enabled and the number of subbands K that are allowed to be hopped is an odd number, the transmit antenna subset index a(n _SRS ) where the nth _SRS secondary SRS transmission is located is determined according to the following formula:

a(n _SRS )=n _SRS mod N; or,

(3): When the frequency hopping function of the SRS is enabled and the number of subbands K that are allowed to hop are even and K is an integer multiple of 4, the transmit antenna subset index a(n _SRS ) where the nth _SRS secondary SRS transmission is located Determine according to the following formula:

or,

(4): When the sounding reference signal hopping function is enabled and the number of subbands K that are allowed to hop are even and K is a non-integer multiple of 4, the transmitting antenna subset index a where the nth _SRS secondary SRS transmission is located (n _SRS ) is determined according to the following formula:

or,

In addition, it should be noted that the predefined rules include: transmitting periodic SRS on N antenna subsets. And the predefined rule includes: transmitting the aperiodic SRS on the N antenna subsets, wherein the one-time triggering N times of the aperiodic SRS transmission is supported. The N aperiodic SRS transmissions are respectively sent on N consecutive uplink transmission symbols in the special subframe.

In step S102, the sounding reference signal is transmitted on the N antenna subsets according to a predefined rule. Previously, the method of this embodiment further includes dividing the transmit antenna into N antenna subsets.

In addition, in step S102, before the sounding reference signal is transmitted on the N antenna subsets according to the predefined rule, the method further includes: receiving signaling on the base station side, where the signaling is used to indicate that the SRS is in N according to a predefined rule. Send on the antenna subset.

In addition, the predefined rule involved in this embodiment may be: selecting an antenna subset corresponding to the best downlink channel to send the SRS according to the downlink channel state information.

The pre-defined rule of (1) above may be summarized as: determining, according to at least the enabling or not of the SRS frequency hopping function and the number of times of transmitting the SRS, the transmit antenna subset index in which the SRS is transmitted; and (2) The predefined rule to (3) can be summarized on the basis of (1): in the case that the frequency hopping function is enabled, the predefined rule includes: at least according to the number of subbands and the transmission station that are allowed to hop. The number of SRSs is determined to determine the transmit antenna subset index at which the SRS is transmitted.

Optionally, in an optional implementation manner of this embodiment, optionally N is 4 in the embodiment, and one antenna is in each antenna subset.

FIG. 2 is a flowchart of a signaling configuration method for sounding reference signals according to an embodiment of the present invention. As shown in FIG. 2, the steps of the method include:

Step S202: The base station sends, to the terminal, signaling for instructing the terminal to send the sounding reference signal SRS on the N antenna subsets of the terminal according to a predefined rule, where N is a positive integer, and each antenna subset includes at least one antenna; The SRS is transmitted at different times on at least two antenna subsets of the N antenna subsets.

The foregoing step S202 can be used to indicate that the base station can instruct the terminal to send the sounding reference signal SRS on the N antenna subsets of the terminal according to the predefined rule, that is, the SRS can be switched on the subset of the multiple transmitting antennas, so that the same SRS The resources can be applied to different SRS antennas, thereby solving the problem in the related art that SRS handover transmission between multiple antennas, especially multiple antennas of two antennas or more, cannot be supported.

(5) When the frequency hopping function of the SRS is not enabled, the transmit antenna subset index a(n _SRS ) where the nth _SRS secondary SRS transmission is located is determined according to the following formula:

a(n _SRS )=n _SRS mod N.

(6) When the frequency hopping function of the SRS is enabled and the number of subbands K that are allowed to be hopped is an odd number, the transmit antenna subset index a(n _SRS ) where the nth _SRS secondary SRS transmission is located is determined according to the following formula:

a(n _SRS )=n _SRS mod N; or,

(7) When the frequency hopping function of the SRS is enabled and the number of subbands K that are allowed to hop are even and K is an integer multiple of 4, the transmit antenna subset index a(n _SRS ) where the nth _SRS secondary SRS transmission is located is The following formula determines:

or,

(8) When the sounding reference signal hopping function is enabled and the number of subbands K that are allowed to hop are even and K is a non-integer multiple of 4, the transmit antenna subset index a where the nth _SRS secondary SRS transmission is located ( n _SRS ) is determined according to the following formula:

or,

It should be noted that the predefined rule of (5) above may be summarized as: determining, according to at least the enabling or not of the SRS frequency hopping function and the number of times of transmitting the SRS, the transmit antenna subset index in which the SRS is transmitted. Based on the predefined rules of (5), the predefined rules for (6) to (8) can be summarized as follows, in the case where the frequency hopping function is enabled, at least according to the number of subbands allowed to hop and the number of times of transmitting SRS. Determine the transmit antenna subset index at which the SRS is transmitted.

For the step S202 involved in the embodiment, the base station sends a signaling manner to the terminal for instructing the terminal to send the sounding reference signal SRS on the N antenna subsets of the terminal according to the predefined rule, which can be implemented as follows:

Manner 1: Sending 1-bit high-layer signaling to the terminal, where the 1-bit high-layer signaling is used to indicate to the terminal whether to send the SRS on the N antenna subsets of the terminal according to a predefined rule.

Manner 2: Sending 1-bit high-layer signaling to the terminal, where the 1-bit high-layer signaling is used to indicate that the antenna selection function for indicating whether to enable the SRS on the two antennas in the existing protocol is reused, and the antenna selection function is used. The SRS is indicated to indicate to the terminal whether to transmit the SRS on the N antenna subsets of the terminal according to a predefined rule.

Manner 3: Sending 2-bit high-layer signaling to the terminal, where the 2-bit high-level signaling indicates to the terminal whether to send the SRS and the predefined rule adopted on the N antenna subsets of the terminal according to a predefined rule.

Manner 4: transmitting 1-bit high-layer signaling to the terminal, where the 1-bit high-layer signaling is used to indicate to the terminal a predefined rule used by the SRS to transmit on the N antenna subsets.

Manner 5: transmitting 1-bit high-layer signaling to the terminal, where the 1-bit high-layer signaling is used to indicate to the terminal whether the aperiodic sounding reference signal is enabled to be sent on the N antenna subsets according to a predefined rule; The 1-bit high-level signaling indicates that the terminal enables the aperiodic sounding reference signal to be transmitted on the N antenna subsets according to a predefined rule, and reuses the existing one for triggering the aperiodic The 1-bit physical layer signaling sent by the SRS is used to trigger the aperiodic SRS to perform consecutive N transmissions on the valid SRS resource; wherein the valid SRS resource refers to the SRS resource that can be used to send the aperiodic SRS.

Through the description of the above embodiments, those skilled in the art can clearly understand that the method according to the above embodiment can be implemented by means of software plus a necessary general hardware platform, and of course, by hardware, but in many cases, the former is A better implementation. Based on such understanding, the technical solution of the present invention, which is essential or contributes to the prior art, may be embodied in the form of a software product stored in a storage medium (such as ROM/RAM, disk, The optical disc includes a number of instructions for causing a terminal device (which may be a cell phone, a computer, a server, or a network device, etc.) to perform the methods of various embodiments of the present invention.

In this embodiment, a device for transmitting a sounding reference signal and a signaling configuration device are provided, which are used to implement the above-mentioned embodiments and preferred embodiments, and are not described again. As used below, the term "module" may implement a combination of software and/or hardware of a predetermined function. Although the apparatus described in the following embodiments is preferably implemented in software, hardware, or a combination of software and hardware, is also possible and contemplated.

3 is a structural block diagram of a transmitting apparatus for detecting a reference signal according to an embodiment of the present invention. The apparatus is applied to a terminal side, and the apparatus includes: a first transmitting module 32 configured to transmit a sound on a subset of N antennas according to a predefined rule. Reference signal SRS, where N is a positive integer, each antenna subset contains at least one antenna; SRS is transmitted at different times on at least two antenna subsets of the N antenna subsets.

(9) When the frequency hopping function of the SRS is not enabled, the transmit antenna subset index a(n _SRS ) where the nth _SRS secondary SRS transmission is located is determined according to the following formula:

a(n _SRS )=n _SRS mod N.

(10): When the frequency hopping function of the SRS is enabled and the number of subbands K that are allowed to be hopped is an odd number, the transmit antenna subset index a(n _SRS ) where the nth _SRS secondary SRS transmission is located is determined according to the following formula:

a(n _SRS )=n _SRS mod N; or,

(11): When the frequency hopping function of the SRS is enabled and the number of subbands K that are allowed to hop are even and K is an integer multiple of 4, the transmit antenna subset index a(n _SRS ) where the nth _SRS secondary SRS transmission is located Determine according to the following formula:

or,

(12): When the sounding reference signal hopping function is enabled and the number of subbands K that are allowed to hop are even and K is a non-integer multiple of 4, the transmitting antenna subset index a where the nth _SRS secondary SRS transmission is located (n _SRS ) is determined according to the following formula:

or,

In addition, it should be noted that the predefined rules include: sending cycles on N antenna subsets SRS. And the predefined rule includes: transmitting the aperiodic SRS on the N antenna subsets, wherein the one-time triggering N times of the aperiodic SRS transmission is supported. The N aperiodic SRS transmissions are respectively sent on N consecutive uplink transmission symbols in the special subframe.

Before the sounding reference signal is sent on the N antenna subsets according to the predefined rule, the apparatus of this embodiment further includes: a third sending module, configured to divide the transmitting antenna into N antenna subsets.

In addition, before transmitting the sounding reference signal on the N antenna subsets according to the predefined rule, the apparatus of this embodiment further includes: a receiving module, configured to receive the signaling of the base station side, where the signaling is used to indicate that the SRS is in accordance with the pre- The definition rules are sent on N antenna subsets.

The pre-defined rule of (9) above may be summarized as: determining, according to at least the enabling or not of the SRS frequency hopping function and the number of times of transmitting the SRS, the transmit antenna subset index in which the SRS is transmitted; and (10) The predefined rule to (12) can be summarized on the basis of (9): in the case that the frequency hopping function is enabled, the predefined rule includes: at least according to the number of subbands and the transmission station that are allowed to hop. The number of SRSs is determined to determine the transmit antenna subset index at which the SRS is transmitted.

4 is a structural block diagram of a signaling configuration apparatus for sounding reference signals according to an embodiment of the present invention. As shown in FIG. 4, the apparatus is applied to a device side, and the apparatus includes: a second sending module 42 configured to send to a terminal. And signaling to the terminal to transmit the sounding reference signal SRS on the N antenna subsets of the terminal according to a predefined rule, where N is a positive integer, each antenna subset includes at least one antenna; and the SRS is in the N antenna subset At least two antenna subsets are not sent at the same time.

(13) When the frequency hopping function of the SRS is not enabled, the transmit antenna subset index a(n _SRS ) where the nth _SRS secondary SRS transmission is located is determined according to the following formula:

a(n _SRS )=n _SRS mod N.

(14): When the frequency hopping function of the SRS is enabled and the number of subbands K that are allowed to be hopped is an odd number, the transmit antenna subset index a(n _SRS ) where the nth _SRS secondary SRS transmission is located is determined according to the following formula:

a(n _SRS )=n _SRS mod N; or,

(15): When the frequency hopping function of the SRS is enabled and the number of subbands K that are allowed to hop are even and K is an integer multiple of 4, the transmit antenna subset index a(n _SRS ) where the nth _SRS secondary SRS transmission is located Determine according to the following formula:

or,

(16): When the sounding reference signal hopping function is enabled and the number of subbands K that are allowed to hop are even and K is a non-integer multiple of 4, the transmitting antenna subset index a where the nth _SRS secondary SRS transmission is located (n _SRS ) is determined according to the following formula:

or,

It should be noted that the predefined rule of (13) above may be summarized as: determining, according to at least the enabling or not of the SRS frequency hopping function and the number of times of transmitting the SRS, the transmit antenna subset index in which the SRS is transmitted. Based on the predefined rules of (13), the predefined rules for (14) to (16) can be summarized as follows, in the case where the frequency hopping function is enabled, at least according to the number of subbands allowed to hop and the number of times of transmitting SRS. Determine the transmit antenna subset index at which the SRS is transmitted.

For the second sending module involved in this embodiment, signaling for transmitting, by the terminal, the terminal to transmit the sounding reference signal SRS on the N antenna subsets of the terminal according to a predefined rule may be implemented by:

The first sending unit sends a 1-bit high-level signaling to the terminal, where the 1-bit high-level signaling is used to indicate to the terminal whether to send the SRS on the N antenna subsets of the terminal according to a predefined rule.

The first reuse unit is configured to reuse an antenna selection function in the existing protocol for indicating whether to enable the SRS on the two antennas, and the antenna selection function is used to indicate to the terminal whether the N antennas in the terminal are according to a predefined rule. Send SRS on the set.

The second sending unit sends the 2-bit high-layer signaling to the terminal, where the 2-bit high-level signaling indicates to the terminal whether to send the SRS and the adopted predefined rule on the N antenna subsets of the terminal according to a predefined rule.

The third sending unit is configured to send 1-bit high-layer signaling to the terminal, where the 1-bit high-layer signaling is used to indicate to the terminal, the predefined rule that the SRS uses to transmit on the N antenna subsets.

a fourth sending unit: transmitting 1-bit high-layer signaling to the terminal, where the 1-bit high-layer signaling is used to indicate to the terminal whether the aperiodic sounding reference signal is enabled to be sent on the N antenna subsets according to a predefined rule; The dual-use unit is configured to re-use the existing one for triggering the aperiodic SRS transmission if the 1-bit high-level signaling indicates that the terminal enables the aperiodic sounding reference signal to be transmitted on the N antenna subsets according to a predefined rule. The bit physical layer signaling is used to trigger the aperiodic SRS to perform consecutive N transmissions on the valid SRS resources; wherein the valid SRS resources refer to SRS resources that can be used to transmit the aperiodic SRS.

It should be noted that each of the above modules can be implemented by software or hardware. The latter can be implemented in the following manner, but is not limited thereto: the above modules are all located in the same processor; or, the above modules are respectively located in multiple processors.

The invention is exemplified below in conjunction with an alternative embodiment of the invention;

The optional embodiment provides a method for transmitting and signaling a sounding reference signal. By adopting the method of the optional embodiment, the switching of the sounding reference signal on multiple transmitting antennas can be implemented, so that the same SRS resource is used. It can be applied to different SRS antennas, which saves SRS resources compared to multiple antennas (the number of antennas is at least greater than 2), which is beneficial to solve the problem of insufficient SRS capacity in large-scale MIMO systems. It is also advantageous for the base station in the TDD system to obtain all downlink channel information by using the sounding reference signal of the terminal.

The embodiment of the invention provides a method for transmitting and signaling a sounding reference signal, and the steps of the method include:

Step S301: The base station sends signaling to the terminal, where the terminal is configured to send the sounding reference signal according to a predefined rule.

Step S302: The terminal receives the signaling sent by the base station, and sends the sounding reference signal on the N antenna subsets according to a predefined rule.

Where N is a positive integer and each antenna subset contains at least one antenna. There may also be only one antenna per subset of antennas, where N is an integer greater than two. When at least one antenna subset in each antenna subset includes at least two antennas, optionally, the terminal transmits the transmit antenna to N before the terminal transmits the sounding reference signal on the N antenna subsets according to a predefined rule. a subset. For example, N is equal to and there is only one antenna per subset of antennas, indicating that the terminal has 4 transmit antennas, and the terminal will transmit the sounding reference signals on the four antennas according to a predefined rule.

Optionally, the predefined rule may also be understood as a rule of antenna switching or a rule of antenna selection.

In addition, the base station may also indicate to the terminal to send the sounding reference signal according to a predefined rule in one of the following ways:

Manner 1: The 1-bit high-level signaling indicates to the terminal whether to send the sounding reference signal according to a predefined rule. For example, when the 1-bit high-level signaling indication is 0, it means that the predefined rules are not followed. Then, the sounding reference signal is sent. When the indication is 1, it indicates that the sounding reference signal is transmitted according to a predefined rule. The 1-bit high-level signaling may reuse the 1-bit high-layer signaling used in the existing protocol to indicate whether to enable the antenna selection transmission function of the two antennas, or may be the newly added 1-bit high-layer signaling.

Manner 2: The terminal is instructed by the 2-bit high-layer signaling whether to send the sounding reference signal and the predefined rule adopted according to the predefined rule. Wherein, the two bits can be jointly notified, for example, as shown in Table 1; the two bits can also be independently notified; for example, one of the bits is an antenna selection transmission in the existing protocol for indicating whether to turn on the two antennas to the terminal. Functional 1-bit high-level signaling, when the terminal has a subset of N SRS transmit antennas (the total number of transmit antennas included in the N transmit antenna subsets is greater than 2), the 1-bit high-level signaling simultaneously indicates to the terminal whether to follow The predefined rule transmits the sounding reference signal on the N antenna subsets, and the second bit is valid only when the first bit indicates that the sounding reference signal is transmitted according to a predefined rule, and the second bit is used to indicate N transmissions to the terminal. Predefined rules used for SRS transmission on the antenna subset. For example, when the second bit indicates 0, it indicates that the predefined rule 1 is adopted, and when the second bit indicates 1, it indicates that the predefined rule 2 is adopted. Optionally, the predefined rule may be any one of Embodiment 1 to Embodiment 6 below.

Table 1

Manner 3: The terminal is instructed to send a sounding reference signal according to a predefined rule by newly adding 1-bit physical layer signaling. This method is mainly used for transmitting on the N antenna subsets of the terminal. The reference signal is limited to the case of a non-periodic sounding reference signal. The newly added 1-bit physical layer signaling is valid only when the aperiodic sounding reference signal is triggered, that is, the 1-bit physical layer signaling indication used to trigger the aperiodic sounding reference signal in the existing protocol is 1 This newly added 1-bit physical layer signaling is effective. Optionally, when the aperiodic sounding reference signal is triggered, the newly added 1-bit physical layer signaling indicates to the terminal that the antenna selection transmission function of the N antenna subset is turned on, and implicitly indicates to the terminal that the aperiodic sounding reference signal needs to be NK consecutive transmissions are used to complete the measurement of channel quality information of four antennas at full bandwidth.

Manner 4: transmitting, by the terminal, 1-bit high-layer signaling, to indicate to the terminal, whether to enable the aperiodic sounding reference signal to be sent on the N antenna subsets according to a predefined rule; The signaling indicates that the terminal enables the aperiodic sounding reference signal to be sent on the N antenna subsets according to a predefined rule, and reuses the existing 1-bit physical layer signaling used to trigger the aperiodic SRS transmission to trigger the non- The periodic SRS performs a continuous N transmissions on valid SRS resources. The valid SRS resource refers to an SRS resource that can be used to send the aperiodic SRS.

Optionally, the predefined rule includes the sounding reference signal transmitted on the N antenna subsets of the terminal according to the following predefined rules may be limited to the periodic sounding reference signal. Of course, it may be limited to the aperiodic sounding reference signal. When the sounding reference signal transmitted on the N antenna subsets of the terminal is limited to the non-periodic sounding reference signal according to the following predetermined rules, the aperiodic sounding reference signal needs to be supported. The measurement of channel quality information of full bandwidth can be completed by triggering N consecutive transmissions at a time. Preferably, the N times aperiodic sounding reference signals are respectively transmitted on N consecutive uplink transmission symbols of the TDD system special subframe. When it is limited to periodically detecting the reference signal, the periodic sounding reference signal completes the measurement of the channel quality information of the full bandwidth every NK times of the SRS transmission.

Optionally, the predefined rule includes that the N antenna subsets that send the sounding reference signals are respectively located on the N consecutive uplink transmission symbols of the TDD system special subframe to send the SRS.

Optionally, the predefined rule comprises the sounding reference signal being transmitted at different times on at least two antenna subsets in the N antenna subsets of the terminal.

Optionally, the pre-defined rule packet used by the sounding reference signal to transmit on the N antenna subsets include:

When the sounding reference signal hopping function is not enabled, the transmit antenna subset index a(n _SRS ) where the nth _SRS secondary SRS transmission is located is determined according to the following formula:

a(n _SRS )=n _SRS mod N.

When the sounding reference signal hopping function is enabled and the number of subbands K to be hopped is an odd number, the transmit antenna subset index a(n _SRS ) where the nth _SRS secondary SRS transmission is located is determined according to the following equation:

a(n _SRS )=n _SRS mod N, or,

When the sounding reference signal hopping function is enabled and the number of subbands K that are allowed to hop are even and K is an integer multiple of 4, the transmit antenna subset index a(n _SRS ) where the nth _SRS secondary SRS transmission is located is The following formula determines:

or,

When the sounding reference signal hopping function is enabled and the number of subbands K that are allowed to hop are even and K is a non-integer multiple of 4, the transmit antenna subset index a(n _SRS ) where the nth _SRS secondary SRS transmission is located Determine according to the following formula:

or,

The following predefined rules for transmitting the sounding reference signal on the N transmit antenna subsets described in this embodiment will be described by the following embodiments:

Embodiment 1:

The terminal has four transmitting antennas, and the terminal sends the sounding reference signals on the four antennas according to a predefined rule, which specifically includes:

When the SRS frequency domain frequency hopping function is not enabled, the terminal transmits the antenna subset index a(n _SRS ) where the nth _SRS secondary SRS transmission is located according to the following formula:

a(n _SRS )=n _SRS mod 4

When the SRS frequency domain frequency hopping function is enabled, the transmitting antenna subset index a(n _SRS ) where the terminal is located in the nth _SRS secondary SRS transmission is determined according to the following formula:

among them,

K indicates the number of SRS subbands that allow SRS frequency hopping when the SRS frequency domain hopping function is enabled. When the SRS hopping function is disabled, K defaults to 1, and n _SRS indicates the counter of the user-specific SRS transmission times. , n _{SRS is a} non-negative integer.

In the first scheme, as the number of SRS transmissions changes, the SRS transmission antenna continuously switches. When the SRS frequency hopping function is enabled, the SRS transmitting antenna also switches with the frequency hopping of the SRS subband.

FIG. 5A is a schematic diagram of a four-antenna SRS transmission method when the number of SRS frequency hopping subbands is two according to an embodiment of the present invention. As shown in FIG. 5A, K=2, that is, when there are two frequency hopping subbands, the SRS is four. The transmission law on the transmitting antenna. With the switching of two sub-bands, the transmitting antenna of the SRS also switches: when the 0th SRS transmission (n _SRS =0), the SRS is transmitted on the sub-band 0 and the first antenna (TX0); when the first SRS When transmitting (n _SRS =1), the SRS is transmitted on the subband 1 and the second antenna (TX1); when the second SRS transmission (n _SRS = 2), the subband hopping of the SRS enters the second hopping Cycle, SRS is transmitted on subband 0 and third antenna (TX2); when the third SRS transmission (n _SRS = 3), the subband hopping of SRS is in the second hopping period, and SRS is in subband 1 And transmitting on the fourth antenna (TX3); when the 4th SRS transmission (n _SRS = 4), the subband hopping of the SRS enters the third hopping period, and the SRS is in the subband 0 and the second antenna (TX1) Upper transmission; when the 5th SRS transmission (n _SRS = 5), the subband hopping of the SRS is in the third hopping period, and the SRS is transmitted on the subband 1 and the third antenna (TX2); When SRS transmission (n _SRS = 6), the subband hopping of the SRS enters the fourth hopping period, and the SRS is transmitted on the subband 0 and the fourth antenna (TX3); when the 7th SRS transmission (n _SRS = 7) When the subband hopping of the SRS is in the fourth hopping period, the SRS is on the subband 1 and the first antenna (TX0) Feeding; after the transmission of the SRS, and so the SRS transmission regularity. It can be seen that in the 4K (here K=2) secondary SRS transmission, the terminal completes the transmission of the four antenna SRS on each subband, and the base station can utilize the SRS signals received from the four antennas on each subband. The uplink/downlink channel quality information on each subband with four transmit antennas/four receive antennas is obtained.

FIG. 5B is a schematic diagram of a method for transmitting a four-antenna SRS when the number of SRS hopping subbands is three according to an embodiment of the present invention. As shown in FIG. 5B, K=3, that is, when there are three frequency hopping subbands, the SRS is transmitted in four. Transmission rule on the antenna: With the switching of the sub-band, the transmission of the SRS is cyclically switched in the first antenna (TX0), the second antenna (TX1), the third antenna (TX2), and the fourth antenna (TX3).

FIG. 5C is a schematic diagram of a four-antenna SRS transmission method when the number of SRS frequency hopping subbands is 4 according to an embodiment of the present invention. As shown in FIG. 5C, K=4, that is, when there are four frequency hopping subbands, the SRS is four. Transmission rule on the transmitting antenna: With the switching of the subband, in the first SRS subband hopping period (n _SRS =0 to 3), the SRS is respectively in the first antenna (TX0), the second antenna (TX1), The third antenna (TX2) and the fourth antenna (TX3) are sequentially transmitted; in the second SRS subband hopping period (n _SRS = 4 to 7), the SRS is respectively at the second antenna (TX1) and the third antenna. (TX2), fourth antenna (TX3), first antenna (TX0) transmission; in the third SRS subband frequency hopping period (n _SRS = 8 to 11), SRS is respectively at the third antenna (TX2), The fourth antenna (TX3), the first antenna (TX0), and the second antenna (TX1) are transmitted; in the fourth SRS subband hopping period (n _SRS = 12 to 15), the SRS is respectively at the fourth antenna ( TX3), the first antenna (TX0), the second antenna (TX1), and the third antenna (TX2) are sequentially transmitted.

5D is a schematic diagram of a method for transmitting a four-antenna SRS when the number of SRS hopping subbands is 6 according to an embodiment of the present invention. As shown in FIG. 5D, when K=6, there are six hopping subbands, and the SRS is at four. Transmission rules on one transmit antenna: In every 4K SRS transmissions, in the first two subband hopping periods (n _SRS =0 to 11), the SRS is transmitted in the first antenna (TX0) and the second antenna (TX1). The third antenna (TX2) and the fourth antenna (TX3) are cyclically switched; in the latter two subband hopping periods (n _SRS = 12 to 23), the SRS is transmitted in the second antenna (TX1) and the third antenna. The (TX2), the fourth antenna (TX3), and the first antenna (TX0) are sequentially cycled.

The transmission law of SRS on the four antennas under other K values can be calculated by using the formula in the first scheme, and will not be described here in view of the space.

Embodiment 2:

When the SRS frequency domain frequency hopping function is not enabled or enabled, the terminal transmits the antenna subset index a(n _SRS ) where the nth _SRS secondary SRS transmission is located according to the following formula:

Different from the first sub-band switching of the first scheme, the antenna is also switched. In the second scheme, when When the SRS frequency hopping function is enabled, the SRS transmitting antenna does not switch during an SRS frequency domain hopping period. The SRS transmitting antenna switches only when entering a new SRS frequency domain hopping period. As in the first scheme, scheme 2 also completes the transmission of the four antenna SRS on each subband in 4K SRS transmissions.

6A is a schematic diagram of a method for transmitting a four-antenna SRS when the number of SRS frequency hopping subbands is 2 according to the embodiment of the present invention. As shown in FIG. 6A, K=2, that is, when there are two frequency hopping subbands, the SRS is four. Transmission rule on the transmitting antenna: in the first SRS hopping period (n _SRS =0 to 1), the SRS is transmitted on the first antenna (TX0); in the second SRS hopping period (n _SRS = 2~) 3), SRS is transmitted on the second antenna (TX1); in the third SRS hopping period (n _SRS = 4 to 5), the SRS is transmitted on the third antenna (TX2); in four SRS frequency hopping During the period (n _SRS = 6 to 7), the SRS is transmitted on the fourth antenna (TX3).

6B is a schematic diagram of a method for transmitting a four-antenna SRS when the number of SRS frequency hopping subbands is 3 according to the embodiment of the present invention. As shown in FIG. 6B, K=3, that is, when there are three frequency hopping subbands, the SRS is sent in four. Transmission rule on the antenna: In the first SRS hopping period (n _SRS =0~2), the SRS is transmitted on the first antenna (TX0); in the second SRS hopping period (n _SRS = 3~5) Within the SRS, the SRS is transmitted on the second antenna (TX1); in the third SRS hopping period (n _SRS = 6-8), the SRS is transmitted on the third antenna (TX2); in the fourth SRS frequency hopping During the period (n _SRS = 9 to 11), the SRS is transmitted on the fourth antenna (TX3).

6C is a schematic diagram of a method for transmitting a four-antenna SRS when the number of SRS frequency hopping subbands is 4 according to the embodiment of the present invention. As shown in FIG. 6C, K=4, that is, when there are four frequency hopping subbands, the SRS is four. Transmission rule on the transmitting antenna: In the first SRS hopping period (n _SRS =0 to 3), the SRS is transmitted on the first antenna (TX0); in the second SRS hopping period (n _SRS = 4~) 7), the SRS is transmitted on the second antenna (TX1); in the third SRS hopping period (n _SRS = 8 to 11), the SRS is transmitted on the third antenna (TX2); in the fourth SRS hop Within the frequency period (n _SRS = 12 to 15), the SRS is transmitted on the fourth antenna (TX3).

6D is a schematic diagram of a four-antenna SRS transmission method when the number of SRS frequency hopping subbands is 6 according to the embodiment of the present invention. As shown in FIG. 6D, K=6, that is, when there are six frequency hopping subbands, the SRS is four. Transmission rule on the transmitting antenna: In the first SRS hopping period (n _SRS =0 to 5), the SRS is transmitted on the first antenna (TX0); in the second SRS hopping period (n _SRS = 6~) 11), the SRS is transmitted on the second antenna (TX1); in the third SRS hopping period (n _SRS = 12 to 17), the SRS is transmitted on the third antenna (TX2); in the fourth SRS hop Within the frequency period (n _SRS = 18 to 23), the SRS is transmitted on the fourth antenna (TX3).

The transmission law of SRS on the four antennas under other K values can be calculated by using the formula in the second scheme. For the sake of space, it will not be repeated here.

Embodiment 3:

a(n _SRS )=n _SRS mod 4

among them,

The third feature of the scheme is that when the SRS frequency hopping function is enabled, and K is even, the SRS transmission antenna is switched once every two times (ie, each pair), and the antenna switching rule and protocol between the pair and the pair are performed. The existing two-antenna SRS transmission antenna switching law is the same. Scheme 3 also completes the transmission of the four antenna SRS on each subband in 4K SRS transmissions.

FIG. 7A is a schematic diagram of a four-antenna SRS transmission method when the number of SRS frequency hopping subbands is 2 according to Embodiment 3 of the present invention. As shown in FIG. 7A, K=2, that is, when there are two frequency hopping subbands, SRS is transmitted in four. Transmission rule on the antenna: in the first pair of SRS transmissions (n _SRS =0 to 1), the SRS is transmitted on the first antenna (TX0); in the second pair of SRS transmissions (n _SRS = 2 to 3), SRS Transmitted on the second antenna (TX1); in the third pair of SRS transmissions (n _SRS = 4 to 5), the SRS is transmitted on the third antenna (TX2); in the fourth pair of SRS transmissions (n _SRS = 6 to 7) In the SRS, the SRS is transmitted on the fourth antenna (TX3).

FIG. 7B is a schematic diagram of a four-antenna SRS transmission method when the number of SRS frequency hopping subbands is three according to the embodiment of the present invention. As shown in FIG. 7B, when K=3, that is, when there are three frequency hopping subbands, the SRS is in four transmitting antennas. Transmission rule: When the number of subbands is an odd number, the transmission rule of the SRS on the four transmitting antennas is the same as that of the scheme 1, and will not be described here.

7C is a schematic diagram of a method for transmitting a four-antenna SRS when the number of SRS hopping subbands is 4 according to Embodiment 3 of the present invention. As shown in FIG. 7C, when K=4, that is, when there are four frequency hopping subbands, the SRS is transmitted in four. Transmission law on the antenna: in the first pair (n _SRS =0 to 1), the second pair (n _SRS = 2 to 3), the third pair (n _SRS = 4 to 5), and the fourth pair (n _SRS = 6-7) In SRS transmission, SRS is transmitted on the first antenna (TX0), the second antenna (TX1), the third antenna (TX2), and the fourth antenna (TX3), respectively; in the fifth pair (n _SRS = 8) ～9), sixth pair (n _SRS =10～11), seventh pair (n _SRS =12～13), eighth pair (n _SRS =14～15) SRS transmission, SRS are respectively in the second antenna ( TX1), third antenna (TX2), fourth antenna (TX3), and first antenna (TX0) are transmitted.

7D is a schematic diagram of a four-antenna SRS transmission method when the number of SRS frequency hopping subbands is 6 according to Embodiment 3 of the present invention, as shown in FIG. 7D, where K=6, that is, when there are six frequency hopping subbands, SRS is transmitted in four. Transmission law on the antenna: in the first pair (n _SRS =0 to 1), the second pair (n _SRS = 2 to 3), the third pair (n _SRS = 4 to 5), and the fourth pair (n _SRS = 6-7) In SRS transmission, SRS is transmitted on the first antenna (TX0), the second antenna (TX1), the third antenna (TX2), and the fourth antenna (TX3), respectively; in the fifth pair (n _SRS = 8) ～9), sixth pair (n _SRS =10～11), seventh pair (n _SRS =12～13), and eighth pair (n _SRS =14～15) SRS transmission, SRS are respectively in the first antenna ( TX0), second antenna (TX1), third antenna (TX2), fourth antenna (TX3) are transmitted; in the ninth pair (n _SRS = 16 to 17), the tenth pair (n _SRS = 18 to 19) In the eleventh pair (n _SRS = 20 to 21) and the twelfth pair (n _SRS = 22 to 23) SRS transmission, the SRS is in the first antenna (TX0), the second antenna (TX1), and the third antenna, respectively. (TX2), transmitted on the fourth antenna (TX3).

The transmission rule of SRS on the four antennas under other K values can be calculated by using the formula in the third scheme. For the sake of space, it will not be repeated here.

Embodiment 4:

a(n _SRS )=n _SRS mod 4

among them,

The scheme 3 is the same as the scheme 1. The characteristic is that the SRS transmission antenna continuously switches with the change of the number of SRS transmissions. When the SRS frequency hopping function is enabled, the SRS transmission antenna also switches with the frequency hopping of the SRS subband. However, the switching sequence is slightly different, especially when the SRS frequency hopping function is enabled and K is even.

FIG. 8A is a schematic diagram of a four-antenna SRS transmission method when the number of SRS frequency hopping subbands is 2 according to an embodiment of the present invention. As shown in FIG. 8A, when K=2, that is, when there are two frequency hopping subbands, the SRS is transmitted in four. The transmission rule on the antenna. With the switching of two sub-bands, the transmitting antenna of the SRS also switches: when the 0th SRS transmission (n _SRS =0), the SRS is transmitted on the sub-band 0 and the first antenna (TX0); when the first SRS When transmitting (n _SRS =1), the SRS is transmitted on the subband 1 and the second antenna (TX1); when the second SRS transmission (n _SRS = 2), the subband hopping of the SRS enters the second hopping Cycle, SRS is transmitted on subband 0 and third antenna (TX2); when the third SRS transmission (n _SRS = 3), the subband hopping of SRS is in the second hopping period, and SRS is in subband 1 And transmitting on the fourth antenna (TX3); when the 4th SRS transmission (n _SRS = 4), the subband hopping of the SRS enters the third hopping period, and the SRS is in the subband 0 and the second antenna (TX1) Upper transmission; when the 5th SRS transmission (n _SRS = 5), the subband hopping of the SRS is in the third hopping period, and the SRS is transmitted on the subband 1 and the third antenna (TX2); When SRS transmission (n _SRS = 6), the subband hopping of the SRS enters the fourth hopping period, and the SRS is transmitted on the subband 0 and the fourth antenna (TX3); when the 7th SRS transmission (n _SRS = 7) When the subband hopping of the SRS is in the fourth hopping period, the SRS is on the subband 1 and the first antenna (TX0) Feeding; after the transmission of the SRS, and so the SRS transmission regularity. It can be seen that in the 4K (here K=2) secondary SRS transmission, the terminal completes the transmission of the four antenna SRS on each subband, and the base station can utilize the SRS signals received from the four antennas on each subband. The uplink/downlink channel quality information on each subband with four transmit antennas/four receive antennas is obtained.

FIG. 8B is a schematic diagram of a four-antenna SRS transmission method when the number of SRS frequency hopping subbands is three according to an embodiment of the present invention. As shown in FIG. 8B, K=3, that is, when there are three frequency hopping subbands, the SRS is transmitted in four. Transmission rule on the antenna: With the switching of the subband, the SRS is transmitted at the first antenna (TX0), The second antenna (TX1), the third antenna (TX2), and the fourth antenna (TX3) are sequentially cycled.

FIG. 8C is a schematic diagram of a four-antenna SRS transmission method when the number of SRS frequency hopping subbands is 4 according to an embodiment of the present invention. As shown in FIG. 8C, when K=4, that is, when there are four frequency hopping subbands, the SRS is transmitted in four. Transmission rule on the antenna: With the sub-band switching, in the first four SRS transmissions (n _SRS =0 to 3), the SRS is respectively at the first antenna (TX0), the second antenna (TX1), and the third antenna ( TX2), fourth antenna (TX3) are sequentially transmitted; in the second four-time SRS transmission (n _SRS = 4 to 7), SRS is respectively at the second antenna (TX1), the third antenna (TX2), and the fourth The antenna (TX3) and the first antenna (TX0) transmit; in the third four-time SRS transmission (n _SRS = 8 to 11), the SRS is respectively at the third antenna (TX2), the fourth antenna (TX3), One antenna (TX0) and the second antenna (TX1) are transmitted; in the fourth four-time SRS transmission (n _SRS = 12 to 15), the SRS is respectively at the fourth antenna (TX3), the first antenna (TX0), The second antenna (TX1) and the third antenna (TX2) are sequentially transmitted.

FIG. 8D is a schematic diagram of a four-antenna SRS transmission method when the number of SRS frequency hopping subbands is six according to an embodiment of the present invention. As shown in FIG. 8D, when there are six frequency hopping subbands at K=6, the SRS is four. Transmission rule on the transmitting antenna: With the sub-band switching, in the first four SRS transmissions (n _SRS =0 to 3), the SRS is respectively at the first antenna (TX0), the second antenna (TX1), and the third antenna. (TX2), the fourth antenna (TX3) is sequentially transmitted; in the second four-time SRS transmission (n _SRS = 4 to 7), the SRS is respectively at the first antenna (TX0), the second antenna (TX1), Four antennas (TX3) and first antennas (TX0) are transmitted; in the third four-time SRS transmission (n _SRS = 8 to 11), SRSs are respectively at the second antenna (TX1) and the third antenna (TX2). The fourth antenna (TX3) and the first antenna (TX0) transmit; in the fourth four-time SRS transmission (n _SRS = 12 to 15), the SRS is at the third antenna (TX2) and the fourth antenna (TX3), respectively. And transmitting on the first antenna (TX0) and the second antenna (TX1); in the fifth four-time SRS transmission (n _SRS = 16 to 19), the SRS is respectively in the third antenna (TX2) and the fourth antenna (TX3) ), the second antenna (TX1), the third antenna (TX2) is sent; in the sixth four times S In the RS transmission (n _SRS = 20 to 23), the SRS is transmitted on the fourth antenna (TX3), the first antenna (TX0), the second antenna (TX1), and the third antenna (TX2), respectively.

The transmission law of SRS on the four antennas under other K values can be calculated by using the formula in the fourth scheme. For the sake of space, it will not be repeated here.

Embodiment 5:

The four SRS transmit antennas of the terminal are divided into two groups, which are respectively referred to as a first antenna group and a second antenna group (the group indexes are 0 and 1 respectively). The SRSs are simultaneously transmitted on the two antennas in the group and orthogonalized by using different cyclic shift sequences, and the inter-group antennas are not simultaneously transmitted. For convenience of description, we assume that the antenna included in the first antenna group is the first antenna (TX0) and the second antenna (TX1), and the antenna included in the second antenna group is the third antenna (TX2) and the fourth antenna ( TX3).

When the SRS frequency domain frequency hopping function is not enabled, the index of the transmitting antenna group where the terminal is located in the nth _SRS secondary SRS transmission

Determine according to the following formula:

When the SRS frequency domain frequency hopping function is enabled, the index of the transmitting antenna group where the terminal is located in the nth _SRS secondary SRS transmission

Determine according to the following formula:

among them,

In this scheme, as the number of SRS transmissions changes, the SRS transmission antenna group switches regularly. When the SRS frequency hopping function is enabled, the SRS transmitting antenna group also switches regularly as the SRS subband hops. With this solution, only 2K transmissions are needed, and the terminal can be completed in four SRS transmission on one antenna.

9A is a schematic diagram of a method for transmitting a four-antenna SRS when the number of SRS hopping subbands is 2 according to Embodiment 5 of the present invention. As shown in FIG. 9A, K=2, that is, when there are two frequency hopping subbands, the SRS is four. Transmission law on the transmit antenna (two antenna groups). As the two sub-bands are switched, the transmit antenna group of the SRS also switches regularly: when the 0th SRS transmission (n _SRS =0), the SRS is on the sub-band 0 and the first antenna group (TX0 and TX1) Transmit; when the first SRS transmission (n _SRS =1), the SRS is transmitted on the subband 1 and the second antenna group (TX2 and TX3); when the second SRS transmission (n _SRS = 2), the SRS Subband hopping into the second hopping period, SRS is transmitted on subband 0 and the second antenna group (TX2 and TX3); when the third SRS transmission (n _SRS = 3), subband hopping of SRS In the second frequency hopping period, the SRS is transmitted on the subband 1 and the first antenna group (TX0 and TX1).

9B is a schematic diagram of a method for transmitting a four-antenna SRS when the number of SRS hopping subbands is 3 according to the fifth embodiment of the present invention. As shown in FIG. 9B, K=3, that is, when there are three frequency hopping subbands, the SRS is transmitted in four. Transmission rule on the antenna (two transmitting antenna groups): With the switching of the sub-bands, the transmission of the SRS is cyclically switched on the first antenna group (TX0 and TX1) and the second antenna group (TX2 and TX3).

9C is a schematic diagram of a four-antenna SRS transmission method when the number of SRS frequency hopping subbands is 4 according to Embodiment 5 of the present invention. As shown in FIG. 9C, K=4, that is, when there are four frequency hopping subbands, the SRS is transmitted in four. Transmission rule on the antenna (two transmit antenna groups): With the sub-band switching, in the first half of the first SRS subband hopping period (n _SRS =0 to 1), the SRS is respectively at the first antenna The groups (TX0 and TX1) and the second antenna group (TX2 and TX3) are sequentially transmitted; in the second half of the first SRS subband hopping period (n _SRS = 2 to 3), the SRS is respectively in the second The antenna groups (TX2 and TX3) and the first antenna group (TX0 and TX1) are sequentially transmitted; in the first half of the second SRS subband hopping period (n _SRS = 4 to 5), the SRS is respectively in the first The antenna groups (TX0 and TX1) and the second antenna group (TX2 and TX3) are sequentially transmitted; in the second half of the second SRS subband hopping period (n _SRS = 6 to 7), the SRSs are respectively The two antenna groups (TX2 and TX3) and the first antenna group (TX0 and TX1) are sequentially transmitted. When K=4, SRS transmission with four antennas on each of the four sub-bands can be completed with 8 SRS transmissions.

9D is a schematic diagram of a four-antenna SRS transmission method when the number of SRS frequency hopping subbands is 6 according to the embodiment of the present invention. As shown in FIG. 9D, K=6, that is, when there are six frequency hopping subbands, the SRS is transmitted in four. Transmission rule on the antenna (two transmit antenna groups): as the sub-band switches, in the first half of each SRS sub-band hop period (eg n _SRS =0 to 1, n _SRS = 4 to 5, n _{In SRS} = 8 to 9), the SRS is sequentially transmitted on the first antenna group (TX0 and TX1) and the second antenna group (TX2 and TX3); in the second half of each SRS subband hopping period (for example) In the case of n _SRS = 2 to 3, n _SRS = 6 to 7, and n _SRS = 10 to 11), the SRSs are sequentially transmitted on the second antenna group (TX2 and TX3) and the first antenna group (TX0 and TX1), respectively. When K=6, SRS transmission with four antennas on each of the six sub-bands can be completed with 12 SRS transmissions.

The transmission rule of SRS on the four antennas under other K values can be calculated by using the formula in the scheme 5, and will not be described here in view of the space.

Example 6:

When the SRS frequency domain frequency hopping function is not enabled or enabled, the index of the transmitting antenna group where the terminal is located in the nth _SRS secondary SRS transmission

Determine according to the following formula:

K indicates the number of SRS subbands that allow SRS frequency hopping when the SRS frequency domain hopping function is enabled. When the SRS hopping function is disabled, K defaults to 1, and n _SRS indicates the counter of the user-specific SRS transmission times. , n _{SRS is a} non-negative integer. The feature of this scheme is that the SRS transmitting antenna only switches once every K times of SRS transmission. When the SRS subband hopping function is enabled, the SRS transmitting antenna is switched at the same time as each SRS subband hopping period is switched.

FIG. 10A is a schematic diagram of a four-antenna SRS transmission method when the number of SRS frequency hopping subbands is 2 according to the embodiment of the present invention. As shown in FIG. 10A, K=2, that is, when there are two frequency hopping subbands, the SRS is four. The transmission rule on the transmit antenna (two transmit antenna groups). During the first SRS hopping period (n _SRS =0 to 1), each SRS transmission, SRS is transmitted on the first antenna group (TX0 and TX1); in the second SRS hopping period (n _SRS) Within =2 to 3), each SRS transmission, the SRS is transmitted on the second antenna group (TX2 and TX3).

FIG. 10B is a schematic diagram of a four-antenna SRS transmission method when the number of SRS frequency hopping subbands is three according to an embodiment of the present invention. As shown in FIG. 10B, K=3, that is, when there are three frequency hopping subbands, the SRS is transmitted in four. The transmission law on the antenna (two transmit antenna groups). During the first SRS hopping period (n _SRS =0 to 2), each SRS transmission, SRS is transmitted on the first antenna group (TX0 and TX1); in the second SRS hopping period (n _SRS) Within =3 to 5), each SRS transmission, the SRS is transmitted on the second antenna group (TX2 and TX3).

FIG. 10C is a schematic diagram of a four-antenna SRS transmission method when the number of SRS hopping sub-bands is 4 according to the embodiment of the present invention, as shown in FIG. 10C, where K=4, that is, four hopping sub-bands, SRS is in four transmitting antennas. The transmission rule on (two transmit antenna groups). During the first SRS hopping period (n _SRS =0 to 3), each SRS transmission, SRS is transmitted on the first antenna group (TX0 and TX1); in the second SRS hopping period (n _SRS) Within 4 to 7), each SRS transmission, the SRS is transmitted on the second antenna group (TX2 and TX3).

10D is a schematic diagram of a four-antenna SRS transmission method when the number of SRS frequency hopping subbands is 6 according to the embodiment of the present invention. As shown in FIG. 10D, K=6, that is, when there are six frequency hopping subbands, the SRS is four. The transmission rule on the transmit antenna (two transmit antenna groups). During the first SRS hopping period (n _SRS =0 to 5), each SRS transmission, SRS is transmitted on the first antenna group (TX0 and TX1); in the second SRS hopping period (n _SRS) Within the range of =6 to 11), each SRS transmission, the SRS is transmitted on the second antenna group (TX2 and TX3).

The transmission rule of the SRS on the four antennas in the case of other K values can be calculated by using the formula in the sixth embodiment, and will not be described here.

Embodiments of the present invention also provide a storage medium. Optionally, in the embodiment, the foregoing storage medium may be configured to store program code for performing the following steps:

S1. The sounding reference signal SRS is sent on the N antenna subsets according to a predefined rule, where N is a positive integer, each antenna subset includes at least one antenna; and the SRS is in at least two antenna subsets of the N antenna subsets. Not sent at the same time.

Optionally, in this embodiment, the foregoing storage medium may include, but not limited to, a USB flash drive, a Read-Only Memory (ROM), a Random Access Memory (RAM), a mobile hard disk, and a magnetic memory. A variety of media that can store program code, such as a disc or a disc.

For example, the specific examples in this embodiment may refer to the examples described in the foregoing embodiments and the optional embodiments, and details are not described herein again.

It will be apparent to those skilled in the art that the various modules or steps of the present invention described above can be implemented by a general-purpose computing device that can be centralized on a single computing device or distributed across a network of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein. The steps shown or described are performed, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps thereof are fabricated as a single integrated circuit module. Thus, the invention is not limited to any specific combination of hardware and software.

The above description is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

Industrial applicability

In the embodiment of the present invention, the antenna of the terminal is divided into N antenna subsets, and each antenna subset includes at least one antenna, and then the sounding reference signal SRS is transmitted on the N antenna subsets according to a predefined rule. The manner in which the SRS is sent at different times on at least two antenna subsets in the N antenna subsets solves the problem that the related art cannot support multiple antennas, especially two days. The problem of SRS switching transmission between multiple antennas above the line.

Claims

A method for transmitting a sounding reference signal, comprising:

The sounding reference signal SRS is transmitted on the N antenna subsets according to a predefined rule, where N is a positive integer, each antenna subset includes at least one antenna; and the SRS is at least two antennas in the N antenna subset The subset is not sent at the same time.
The method according to claim 1, wherein the predefined rule comprises: when the frequency hopping function of the SRS is not enabled, the nth SRS times the transmit antenna subset index a (n SRS) where the SRS transmission is located ) Determine according to the following formula:

a(n SRS )=n SRS modN.
The method according to claim 1, wherein the predefined rule comprises: when the frequency hopping function of the SRS is enabled and the number of subbands K that are allowed to be hopped is an odd number, the nth SRS times the SRS transmission is located The transmit antenna subset index a(n SRS ) is determined as follows:

a(n SRS )=n SRS modN; or,
The method according to claim 1, wherein the predefined rule comprises: when the frequency hopping function of the SRS is enabled and the number of subbands K that are allowed to hop are even and K is an integer multiple of 4, nth The transmit antenna subset index a(n SRS ) where the SRS secondary SRS transmission is located is determined according to the following equation:

or,

or,

or,

or,
The method according to claim 1, wherein said predefined rule comprises: when the sounding reference signal hopping function is enabled and the number of subbands K that are allowed to hop are even and K is a non-integer multiple of 4, The transmit antenna subset index a(n SRS ) where the nth SRS secondary SRS transmission is located is determined according to the following equation:

or,

or,

or,

or,
The method of claim 1 wherein the predefined rules comprise transmitting a periodic SRS on the N subsets of antennas.
The method of claim 1, wherein the predefined rules comprise transmitting aperiodic SRS on the N subsets of antennas, wherein one-time triggering of N aperiodic SRS transmissions is supported.
The method according to claim 1, wherein the predefined rule comprises: transmitting, by the N antenna subsets of the sounding reference signals, N consecutive uplink transmission symbols in a special subframe of the TDD system to transmit an SRS.
The method according to any one of claims 1 to 8, wherein before the sounding reference signal is transmitted on the N antenna subsets according to a predefined rule, the method further comprises:

The transmit antenna is divided into the N antenna subsets.
The method according to any one of claims 1 to 8, wherein before the sounding reference signal is transmitted on the N antenna subsets according to a predefined rule, the method further comprises:

Receiving signaling on the base station side, where the signaling is used to indicate that the SRS is sent on the N antenna subsets according to the predefined rule.
The method according to any one of claims 1 to 5, wherein the predefined rule comprises: determining, according to the enabling or not of the SRS frequency hopping function and the number of times the SRS is transmitted, determining to transmit the SRS The transmit antenna subset index.
The method according to claim 11, wherein, in the case that the frequency hopping function is enabled, the predefined rule comprises: determining, according to at least a number of subbands that allow frequency hopping and a number of times of transmitting the SRS, The transmit antenna subset index where the SRS is located.
The method of claim 1 wherein said N is 4 and there is one antenna in each antenna subset.
The method of claim 1, wherein the predefined rules comprise: selecting the subset of antennas corresponding to the best downlink channel to transmit the SRS according to downlink channel state information.
A signaling configuration method for sounding reference signals, comprising:

Sending, to the terminal, signaling for instructing the terminal to send the sounding reference signal SRS on the N antenna subsets of the terminal according to a predefined rule, where N is a positive integer, and each antenna subset includes at least one antenna; The SRS is transmitted at different times on at least two antenna subsets of the N antenna subsets.
The method according to claim 15, wherein the predefined rule comprises: when the frequency hopping function of the SRS is not enabled, the nth SRS times the transmit antenna subset index a (n SRS) where the SRS transmission is located ) Determine according to the following formula:

a(n SRS )=n SRS modN.
The method according to claim 15, wherein the predefined rule comprises: when the frequency hopping function of the SRS is enabled and the number of subbands K that are allowed to be hopped is an odd number, the nth SRS times the SRS transmission is located The transmit antenna subset index a(n SRS ) is determined as follows:

a(n SRS )=n SRS modN; or,
The method according to claim 15, wherein the predefined rule comprises: when the frequency hopping function of the SRS is enabled and the number of subbands K that are allowed to hop are even and K is an integer multiple of 4, nth The transmit antenna subset index a(n SRS ) where the SRS secondary SRS transmission is located is determined according to the following equation:

or,

or,

or,

or,
The method according to claim 15, wherein said predefined rule comprises: when the sounding reference signal hopping function is enabled and the number of subbands K that are allowed to hop are even and K is a non-integer multiple of 4, The transmit antenna subset index a(n SRS ) where the nth SRS secondary SRS transmission is located is determined according to the following equation:

or,

or,

or,

or,
The method according to any one of claims 15 to 19, wherein the predefined rule comprises: determining, according to at least the enabling or not of the SRS frequency hopping function and the number of times the SRS is transmitted, determining where the SRS is transmitted Send the antenna subset index.
The method according to claim 20, wherein, in the case that the frequency hopping function is enabled, the predefined rule comprises: determining, according to at least a number of subbands that are allowed to hop, and a number of times of transmitting the SRS. The transmit antenna subset index where the SRS is located.
The method of claim 15, wherein the signaling to the terminal to instruct the terminal to transmit the sounding reference signal SRS on the N antenna subsets of the terminal according to a predefined rule comprises:

Sending 1-bit high-layer signaling to the terminal, where the 1-bit high-layer signaling is used to indicate to the terminal whether to send an SRS on the N antenna subsets of the terminal according to the predefined rule.
The method of claim 15, wherein the signaling to the terminal to instruct the terminal to transmit the sounding reference signal SRS on the N antenna subsets of the terminal according to a predefined rule comprises:

Reusing the antenna selection function in the existing protocol for indicating to the terminal whether to enable the SRS on the two antennas, wherein the antenna selection function is used to indicate to the terminal whether the N antennas in the terminal according to the predefined rule The SRS is sent on the subset.
The method of claim 15, wherein the signaling to the terminal to instruct the terminal to transmit the sounding reference signal SRS on the N antenna subsets of the terminal according to a predefined rule comprises:

Transmitting 2-bit high-layer signaling to the terminal, wherein the 2-bit high-level signaling indicates to the terminal whether to send the SRS and the pre-defined rule adopted on the N antenna subsets of the terminal according to the predefined rule.
The method of claim 15 wherein transmitting to the terminal is for indicating said The signaling that the terminal sends the sounding reference signal SRS on the N antenna subsets of the terminal according to a predefined rule includes:

Transmitting, by the terminal, 1-bit high-layer signaling, where the 1-bit high-layer signaling is used to indicate to the terminal, a predefined rule that is sent by the SRS on the N antenna subsets.
The method of claim 15, wherein the signaling to the terminal to instruct the terminal to transmit the sounding reference signal SRS on the N antenna subsets of the terminal according to a predefined rule comprises:

Sending 1-bit high-layer signaling to the terminal, where the 1-bit high-layer signaling is used to indicate to the terminal whether the aperiodic sounding reference signal is enabled to be sent on the N antenna subsets according to a predefined rule;

If the 1-bit high-layer signaling indicates that the terminal enables the aperiodic sounding reference signal to be transmitted on the N antenna subsets according to a predefined rule, reuse the existing 1-bit physical layer signal for triggering the aperiodic SRS transmission. Letting the aperiodic SRS be triggered to perform consecutive N transmissions on valid SRS resources;

The valid SRS resource refers to an SRS resource that can be used to send the aperiodic SRS.
A transmitting device for detecting a reference signal, comprising:

a first sending module, configured to send the sounding reference signal SRS on the N antenna subsets according to a predefined rule, where N is a positive integer, each antenna subset includes at least one antenna; and the SRS is at the N antennas At least two subsets of antennas in the subset are not sent at the same time.
The apparatus according to claim 27, wherein the predefined rule comprises: when the frequency hopping function of the SRS is not enabled, the nth SRS times the transmit antenna subset index a (n SRS) where the SRS transmission is located ) Determine according to the following formula:

a(n SRS )=n SRS modN.
The apparatus according to claim 27, wherein the predefined rule comprises: when the frequency hopping function of the SRS is enabled and the number of subbands K that are allowed to be hopped is an odd number, the nth SRS times the SRS transmission is located The transmit antenna subset index a(n SRS ) is determined as follows:

a(n SRS )=n SRS modN; or,
The apparatus according to claim 27, wherein said predefined rule comprises: when the frequency hopping function of said SRS is enabled and the number of subbands K that are allowed to hop are even and K is an integer multiple of 4, nth The transmit antenna subset index a(n SRS ) where the SRS secondary SRS transmission is located is determined according to the following equation:

or,

or,

or,

or,
The apparatus according to claim 27, wherein said predefined rule comprises: when the sounding reference signal hopping function is enabled and the number of subbands K that are allowed to hop are even and K is a non-integer multiple of 4, The transmit antenna subset index a(n SRS ) where the nth SRS secondary SRS transmission is located is determined according to the following equation:

or,

or,

or,

or,
The apparatus of claim 27, wherein the predefined rules comprise transmitting a periodic SRS on the N subsets of antennas.
The apparatus of claim 27, wherein the predefined rules comprise transmitting aperiodic SRS on the N subsets of antennas, wherein one-time triggering of N aperiodic SRS transmissions is supported.
The apparatus of claim 33, wherein the N aperiodic SRS transmissions are respectively transmitted on N consecutive uplink transmission symbols in a special subframe.
The apparatus of any one of claims 27 to 34, wherein the apparatus further comprises: before transmitting the sounding reference signal on the N antenna subsets according to a predefined rule, the apparatus further comprising:

A dividing module is configured to divide the transmitting antenna into the N antenna subsets.
The apparatus of any one of claims 27 to 34, wherein the apparatus further comprises: before transmitting the sounding reference signal on the N antenna subsets according to a predefined rule, the apparatus further comprising:

The receiving module is configured to receive signaling on the base station side, where the signaling is used to indicate that the SRS is sent on the N antenna subsets according to the predefined rule.
The apparatus according to any one of claims 27 to 31, wherein the predefined rule comprises: determining, according to the enabling or not of the SRS frequency hopping function and the number of times the SRS is transmitted, determining to transmit the SRS The transmit antenna subset index.
The apparatus according to claim 37, wherein, in a case where the frequency hopping function is enabled, the predefined rule comprises: determining, according to at least a number of subbands that allow frequency hopping and a number of times of transmitting the SRS, The transmit antenna subset index where the SRS is located.
The apparatus of claim 27 wherein said N is 4 and there is one antenna in each antenna subset.
The apparatus of claim 27, wherein the predefined rule comprises: selecting the subset of antennas corresponding to the best downlink channel to transmit the SRS according to downlink channel state information.
A signaling configuration device for detecting a reference signal, comprising:

The second sending module is configured to send, to the terminal, signaling for instructing the terminal to send the sounding reference signal SRS on the N antenna subsets of the terminal according to a predefined rule, where N is a positive integer, and each antenna The subset includes at least one antenna; the SRS is transmitted at different times on at least two antenna subsets of the N antenna subsets.
The apparatus according to claim 41, wherein the predefined rule comprises: when the frequency hopping function of the SRS is not enabled, the nth SRS times the transmit antenna subset index a (n SRS) where the SRS transmission is located ) Determine according to the following formula:

a(n SRS )=n SRS modN.
The apparatus according to claim 41, wherein the predefined rule comprises: when the frequency hopping function of the SRS is enabled and the number of subbands K that are allowed to be hopped is an odd number, the nth SRS times the SRS transmission is located The transmit antenna subset index a(n SRS ) is determined as follows:

a(n SRS )=n SRS modN; or,
The apparatus according to claim 41, wherein said predefined rule comprises: when the frequency hopping function of said SRS is enabled and the number of subbands K that are allowed to hop are even and K is an integer multiple of 4, nth The transmit antenna subset index a(n SRS ) where the SRS secondary SRS transmission is located is determined according to the following equation:

or,

or,

or,

or,
The apparatus according to claim 41, wherein said predefined rule comprises: when the sounding reference signal hopping function is enabled and the number of subbands K that are allowed to hop are even and K is a non-integer multiple of 4, The transmit antenna subset index a(n SRS ) where the nth SRS secondary SRS transmission is located is determined according to the following equation:

or,

or,

or,

or,
The apparatus according to any one of claims 41 to 45, wherein the predefined rule comprises: determining, according to at least the enabling or not of the SRS frequency hopping function and the number of times the SRS is transmitted, determining where the SRS is transmitted Send the antenna subset index.
The apparatus according to claim 46, wherein, in the case where the frequency hopping function is enabled, the predefined rule comprises: determining, according to at least a number of subbands that are allowed to hop and a number of times of transmitting the SRS, The transmit antenna subset index where the SRS is located.
The apparatus of claim 41, wherein the second sending module further comprises:

a first sending unit, configured to send 1-bit high-level signaling to the terminal, where the 1 The bit high layer signaling is used to indicate to the terminal whether to transmit the SRS on the N antenna subsets of the terminal according to the predefined rule.
The apparatus of claim 41, wherein the second sending module further comprises:

a first reuse unit configured to reuse an antenna selection function in the existing protocol for indicating to the terminal whether to enable the SRS on the two antennas, wherein the antenna selection function is configured to indicate to the terminal whether to follow the predefined The rule sends the SRS on the N antenna subsets of the terminal.
The apparatus of claim 41, wherein the second sending module further comprises:

a second sending unit, configured to send 2-bit high-layer signaling to the terminal, where the 2-bit high-layer signaling indicates to the terminal whether to send an SRS on the N antenna subsets of the terminal according to the predefined rule and Predefined rules used.
The apparatus of claim 41, wherein the second sending module further comprises:

a third sending unit, configured to send 1-bit high-layer signaling to the terminal, where the 1-bit high-layer signaling is used to indicate to the terminal, a predefined rule that is used by the SRS to send on the N antenna subsets .
The apparatus of claim 41, wherein the second sending module further comprises:

a fourth sending unit, configured to send 1-bit high-layer signaling to the terminal, where the 1-bit high-layer signaling is used to indicate to the terminal whether the aperiodic sounding reference signal is enabled according to a predefined rule in the N Send on a subset of antennas;

a second reuse unit, configured to: if the 1-bit high-layer signaling indicates that the terminal enables the aperiodic sounding reference signal to be transmitted on the N antenna subsets according to a predefined rule, reuse the existing used to trigger the aperiodic SRS The transmitted 1-bit physical layer signaling is used to trigger the aperiodic SRS to perform consecutive N transmissions on the valid SRS resource;

Wherein the valid SRS resource refers to an SRS that can be used to send the aperiodic SRS Resources.