CN116938422A

CN116938422A - SRS sequence generation method, sequence indication method, terminal and network equipment

Info

Publication number: CN116938422A
Application number: CN202210382490.0A
Authority: CN
Inventors: 郑凯立; 塔玛拉卡·拉盖施; 宋扬; 蔡建生
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2022-04-12
Filing date: 2022-04-12
Publication date: 2023-10-24

Abstract

The application discloses a sequence generation method, a sequence indication method, a terminal and network side equipment of SRS, belonging to the technical field of communication. The terminal generates M first sequences according to the first information, wherein the M first sequences correspond to a sounding reference signal SRS resource; the terminal maps M first sequences to N Orthogonal Frequency Division Multiplexing (OFDM) symbols, wherein the N OFDM symbols are OFDM symbols occupied by R times of repetition of SRS resources in one time slot, N, M and R are positive integers, N is more than or equal to M, and N is more than or equal to R; the first information comprises at least one of X sequence group indexes and Y sequence indexes corresponding to SRS resources, wherein the Y sequence indexes belong to one sequence group, and X and Y are integers larger than 1; or, the first information is a first indication signaling received from the network side device.

Description

SRS sequence generation method, sequence indication method, terminal and network equipment

Technical Field

The application belongs to the technical field of communication, and particularly relates to a sequence generation method, a sequence indication method, a terminal and network side equipment of a sounding reference signal (sounding reference signal, SRS).

Background

In a New Radio (NR) system, SRS resources can be used for beam management (beam management), codebook-based transmission, non-codebook-based transmission, antenna switching (antenna switching) transmission, and so forth. The terminal may acquire an SRS resource set through higher layer signaling, and the SRS resource set may include one or more SRS resources.

However, in the case of a proliferation of users (such as terminals) in the network, since the number of mutually orthogonal or low-correlation SRS resources is limited, collision may occur between SRS resources used by the terminals, and when the SRS resources collide, mutual interference may occur between the SRS resources, resulting in a decrease in channel estimation performance of the SRS resources, thereby affecting transmission performance of the system.

Disclosure of Invention

The embodiment of the application provides a sequence generation method, a sequence indication method, a terminal and network side equipment of SRS, which can solve the problem of reduced channel estimation performance of SRS resources caused by conflict among SRS resources of the terminal.

In a first aspect, there is provided a sequence generating method of SRS, the method comprising: the terminal generates M first sequences according to the first information, wherein the M first sequences correspond to one SRS resource; the terminal maps M first sequences to N OFDM symbols, wherein the N OFDM symbols are OFDM symbols occupied by R times of repetition of SRS resources in one time slot, N, M and R are positive integers, N is more than or equal to M, and N is more than or equal to R; the first information comprises at least one of X sequence group indexes and Y sequence indexes corresponding to SRS resources, wherein the Y sequence indexes belong to one sequence group, and X and Y are integers larger than 1; or, the first information is a first indication signaling received from the network side device.

In a second aspect, there is provided a sequence indication method of SRS, the method comprising: the network side equipment sends a first indication signaling to the terminal; the first indication signaling is used for indicating or updating a sequence identifier corresponding to the SRS resource; or the first indication signaling is used for indicating or updating the SRS resource set, wherein the SRS resource set is the resource set where the SRS resource is located; or the first indication signaling is used for triggering an aperiodic SRS resource set, wherein the aperiodic SRS resource set is a resource set where SRS resources are located.

In a third aspect, an SRS sequence generating apparatus is provided, where the SRSR sequence generating apparatus includes a generating module and a mapping module; the generating module is used for generating M first sequences according to the first information, wherein the M first sequences correspond to one SRS resource; the mapping module is used for mapping the M first sequences onto N OFDM symbols, wherein the N OFDM symbols are OFDM symbols occupied by R times of repetition of SRS resources in one time slot, N, M and R are positive integers, N is more than or equal to M, and N is more than or equal to R; the first information comprises at least one of X sequence group indexes and Y sequence indexes corresponding to SRS resources, wherein the Y sequence indexes belong to one sequence group, and X and Y are integers larger than 1; or, the first information is a first indication signaling received from the network side device.

In a fourth aspect, an SRS sequence indication apparatus is provided, where the SRS sequence indication apparatus includes a transmitting module; the sending module is used for sending a first indication signaling to the terminal; the first indication signaling is used for indicating or updating a sequence identifier corresponding to the SRS resource; or the first indication signaling is used for indicating or updating the SRS resource set, wherein the SRS resource set is the resource set where the SRS resource is located; or the first indication signaling is used for triggering an aperiodic SRS resource set, wherein the aperiodic SRS resource set is a resource set where SRS resources are located.

In a fifth aspect, there is provided a terminal comprising a processor and a memory storing a program or instructions executable on the processor, the program or instructions implementing the steps of the method as in the first or second aspect when executed by the processor.

In a sixth aspect, a terminal is provided, including a processor and a communication interface, where the processor is configured to generate M first sequences according to first information, where the M first sequences correspond to one SRS resource; mapping M first sequences onto N OFDM symbols, wherein the N OFDM symbols are OFDM symbols occupied by R times of repetition of SRS resources in one time slot, N, M and R are positive integers, N is more than or equal to M, and N is more than or equal to R; the first information comprises at least one of X sequence group indexes and Y sequence indexes corresponding to SRS resources, wherein the Y sequence indexes belong to one sequence group, and X and Y are integers larger than 1; or, the first information is a first indication signaling received from the network side device.

In a seventh aspect, a network side device is provided, the network side device comprising a processor and a memory storing a program or instructions executable on the processor, which when executed by the processor, implement the steps of the method as in the second aspect.

An eighth aspect provides a network side device, including a processor and a communication interface, where the communication interface is configured to send a first indication signaling to a terminal; the first indication signaling is used for indicating or updating a sequence identifier corresponding to the SRS resource; or the first indication signaling is used for indicating or updating the SRS resource set, wherein the SRS resource set is the resource set where the SRS resource is located; or the first indication signaling is used for triggering an aperiodic SRS resource set, wherein the aperiodic SRS resource set is a resource set where SRS resources are located.

In a ninth aspect, there is provided a wireless communication system comprising: the terminal may be configured to perform the steps of the sequence generating method of the SRS according to the first aspect, and the network side device may be configured to perform the steps of the sequence indicating method of the SRS according to the second aspect.

In a tenth aspect, there is provided a readable storage medium having stored thereon a program or instructions which when executed by a processor, performs steps of a method as in the first aspect or performs steps of a method as in the second aspect.

In an eleventh aspect, there is provided a chip comprising a processor and a communications interface, the communications interface being coupled to the processor for running a program or instructions to implement a method as in the first or second aspect.

In a twelfth aspect, there is provided a computer program/program product stored in a storage medium, the computer program/program product being executed by at least one processor to carry out the steps of the method as in the first or second aspect.

In the embodiment of the application, the terminal can generate M first sequences according to the first information, wherein the M first sequences correspond to one SRS resource; and mapping the M first sequences onto N OFDM symbols, wherein the N OFDM symbols are OFDM symbols occupied by R repetitions of SRS resources in one time slot, N, M and R are positive integers, N is more than or equal to M, and N is more than or equal to R. The first information comprises at least one of X sequence group indexes and Y sequence indexes corresponding to SRS resources, wherein the Y sequence indexes belong to one sequence group, and X and Y are integers larger than 1; or, the first information is a first indication signaling received from the network side device. According to the scheme, the terminal can generate a plurality of first sequences according to at least one of the X sequence group indexes and the Y sequence indexes corresponding to the SRS resource, so that the terminal can map different first sequences on the N OFDM symbols, and the diversity of the first sequences mapped on the OFDM symbols is increased. Or the terminal can generate the first sequence corresponding to the SRS resource according to the first indication signaling received from the network side device, that is, the terminal can dynamically generate the first sequence according to the indication of the network side device, so that the first sequence corresponding to the SRS resource mapped to the OFDM symbol is more flexible. Thus, when more users are in the network, the interference between sequences mapped on the OFDM symbols by the SRS resources of the terminal can be reduced, so that the channel estimation performance of the SRS resources can be ensured, and the transmission performance of the system is further ensured.

Drawings

Fig. 1 is a block diagram of a wireless communication system provided by an embodiment of the present application;

fig. 2 is a flowchart of a method for generating a sequence of an SRS according to an embodiment of the present application;

fig. 3 is an application schematic diagram of a sequence generation method of SRS provided by the embodiment of the present application;

fig. 4 is a flowchart of a sequence indication method of SRS provided by an embodiment of the present application;

fig. 5 is a schematic structural diagram of an SRS sequence generating apparatus according to an embodiment of the present application;

fig. 6 is a schematic structural diagram of an SRS sequence indication apparatus according to an embodiment of the present application;

fig. 7 is a schematic structural diagram of a communication device according to an embodiment of the present application;

fig. 8 is a schematic hardware diagram of a terminal according to an embodiment of the present application;

fig. 9 is a schematic hardware diagram of a network side device according to an embodiment of the present application.

Detailed Description

The technical solutions of the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which are derived by a person skilled in the art based on the embodiments of the application, fall within the scope of protection of the application.

The terms first, second and the like in the description and in the claims, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application are capable of operation in sequences other than those illustrated or otherwise described herein, and that the terms "first" and "second" are generally intended to be used in a generic sense and not to limit the number of objects, for example, the first sequence may be one or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/" generally means a relationship in which the associated object is an "or" before and after.

It should be noted that the techniques described in the embodiments of the present application are not limited to long term evolution (Long Term Evolution, LTE)/LTE evolution (LTE-Advanced, LTE-a) systems, but may also be used in other wireless communication systems, such as code division multiple access (Code Division Multiple Access, CDMA), time division multiple access (Time Division Multiple Access, TDMA), frequency division multiple access (Frequency Division Multiple Access, FDMA), orthogonal frequency division multiple access (Orthogonal Frequency Division Multiple Access, OFDMA), single carrier frequency division multiple access (Single-carrier Frequency Division Multiple Access, SC-FDMA), and other systems. The terms "system" and "network" in embodiments of the application are often used interchangeably, and the techniques described may be used for both the above-mentioned systems and radio technologies, as well as other systems and radio technologies. The following description describes a New air interface (NR) system for purposes of example and NR terminology is used in much of the description below, but these techniques may also be applied to applications other than NR system applications, such as the 6th generation (6th Generation,6G) communication system.

Fig. 1 shows a block diagram of a wireless communication system to which an embodiment of the present application is applicable. The wireless communication system includes a terminal 11 and a network device 12. The terminal 11 may be a mobile phone, a tablet (Tablet Personal Computer), a Laptop (Laptop Computer) or a terminal-side Device called a notebook, a personal digital assistant (Personal Digital Assistant, PDA), a palm top, a netbook, an ultra-mobile personal Computer (ultra-mobile personal Computer, UMPC), a mobile internet appliance (Mobile Internet Device, MID), an augmented reality (augmented reality, AR)/Virtual Reality (VR) Device, a robot, a Wearable Device (weather Device), a vehicle-mounted Device (VUE), a pedestrian terminal (PUE), a smart home (home Device with a wireless communication function, such as a refrigerator, a television, a washing machine, or a furniture), a game machine, a personal Computer (personal Computer, PC), a teller machine, or a self-service machine, and the Wearable Device includes: intelligent wrist-watch, intelligent bracelet, intelligent earphone, intelligent glasses, intelligent ornament (intelligent bracelet, intelligent ring, intelligent necklace, intelligent anklet, intelligent foot chain etc.), intelligent wrist strap, intelligent clothing etc.. It should be noted that the specific type of the terminal 11 is not limited in the embodiment of the present application. The network-side device 12 may comprise an access network device or a core network device, wherein the access network device 12 may also be referred to as a radio access network device, a radio access network (Radio Access Network, RAN), a radio access network function or a radio access network element. Access network device 12 may include a base station, WLAN access point, or WiFi node, among others. A base station may be referred to as a node B, an evolved node B (eNB), an access point, a base transceiver station (Base Transceiver Station, BTS), a radio base station, a radio transceiver, a basic service set (Basic Service Set, BSS), an extended service set (Extended Service Set, ESS), a home node B, a home evolved node B, a transmission and reception point (Transmitting Receiving Point, TRP), or some other suitable terminology in the art, and is not limited to a specific technical vocabulary so long as the same technical effect is achieved, and it should be noted that in the embodiment of the present application, a base station in an NR system is merely described as an example, and a specific type of the base station is not limited. The core network device may include, but is not limited to, at least one of: core network nodes, core network functions, mobility management entities (Mobility Management Entity, MME), access mobility management functions (Access and Mobility Management Function, AMF), session management functions (Session Management Function, SMF), user plane functions (User Plane Function, UPF), policy control functions (Policy Control Function, PCF), policy and charging rules function units (Policy and Charging Rules Function, PCRF), edge application service discovery functions (Edge Application Server Discovery Function, EASDF), unified data management (Unified Data Management, UDM), unified data repository (Unified Data Repository, UDR), home subscriber server (Home Subscriber Server, HSS), centralized network configuration (Centralized network configuration, CNC), network storage functions (Network Repository Function, NRF), network opening functions (Network Exposure Function, NEF), local NEF (or L-NEF), binding support functions (Binding Support Function, BSF), application functions (Application Function, AF), and the like. It should be noted that, in the embodiment of the present application, only the core network device in the NR system is described as an example, and the specific type of the core network device is not limited.

In NR systems SRS (Sounding Reference Signal) can be used for beam management, codebook-based transmission, non-codebook-based transmission, antenna-switched transmission. The terminal may acquire SRS resource sets through higher layer signaling, where each SRS resource set configuration includes its use, periodic characteristics (periodic, semi-persistent, and aperiodic) configuration, and so on.

Currently, SRS resources only support transmission of 1,2,4 ports. In 1 time slot, the symbol starting position of SRS resource can be on any symbol in one time slot, and the high-layer signaling configurable SRS occupies 1/2/4 symbol transmission and supports the comb-2, comb-4 and comb-8 structures in the frequency domain.

The base sequence of SRS of NR system is ZC (Zadoff-Chu) sequence. One important property of ZC sequences is: the ZC sequence is also a ZC sequence after DFT conversion. The ZC sequence has a constant time domain amplitude with a low peak-to-average ratio (Peak to Average Power Ratio, PAPR). Since ZC sequences are also ZC sequences after fourier transformation, ZC sequences also have flat spectrum. Since flat spectrum is equivalent to zero cyclic autocorrelation for any non-zero cyclic shift, this means that two different time domain cyclic shifts of the same ZC sequence are orthogonal. Note that: the time domain cyclic shift corresponds to a continuous phase rotation of the frequency domain.

Therefore, the concept of cyclic shift (SRS) is introduced in SRS sequence generation. For the comb-2 structure, the number of maximum cyclic shifts is defined as 8; for the comb-4 structure, the number of maximum cyclic shifts is defined as 12; for the comb-8 structure, the number of maximum cyclic shifts is defined as 6.

According to TS38.211, NR SRS sequences were generated as follows:

wherein, the liquid crystal display device comprises a liquid crystal display device,for the length of SRS sequence, +.>Is a sequence of SRS, and is generated based on ZC sequence. The sequence of SRS is divided into 30 sequence groups, wherein each sequence group contains 2 sequences. u is the index of the sequence group, and the value of u is 0-29. v is the sequence index in the sequence group(sequence index in the basic application embodiment), the value is 0 or 1.

In addition, in the case of the optical fiber,

for the followingBasic sequence->The expression (++A) is obtained by>the base sequence/>is given by)：

Wherein, the liquid crystal display device comprises a liquid crystal display device,

N _ZC is of length of N _ZC ＜M _ZC The maximum prime number of The (The length N) _ZC is given by the largest prime number such thatN _ZC ＜M _ZC )。

cyclic shiftα _i And SRS port antanna port p _i The relationship of (2) is given by:

wherein, the liquid crystal display device comprises a liquid crystal display device,is the cyclic shift offset configured by the network side device through the RRC signaling. The maximum cyclic shift values are: />If K _TC ＝8；/>If K _TC ＝4；/>If K _TC ＝2。K _TC And (5) taking the frequency comb value corresponding to the comb structure.

Wherein, SRS port can be defined by p _i =1000+i. When the number of network configuration SRS ports is 8, i=0, 1,2,3,4,5,6,7; when the number of network configuration SRS ports is 4, i=0, 1,2 and 3; when the number of network configuration SRS ports is 2, i=0, 1; when the number of network-configured SRS ports is 1, i=0.

In addition, when the SRS port and the cyclic shift satisfy the following relationship, the SRS port may also be distinguished by FDM.

Wherein, the liquid crystal display device comprises a liquid crystal display device,configured by the network side device through RRC signaling, may be referred to as 'comb offset'. K (K) _TC For comb structures, e.g. pairsIn comb-4, K _TC =4. As can be seen from the above, the FDM mode and the prior artRelated to the following. When->When the number of ports (ports) is 4, and a port whose port number belongs to {1001,1003} and a port whose port number belongs to {1000,1002} can be distinguished by FDM. I.e., the 2 groups of ports are in different comb locations, respectively. In other words, the mapping of these 2 groups of ports is to different RE locations on the frequency domain. Conversely, ifWhen 4 ports are mapped to the same RE in the frequency domain, only distinguished by different cyclic shift. It can be seen that the arrangement->The orthogonality between ports is better.

The sequence generation method, the sequence indication method, the terminal and the network side device for the SRS provided by the embodiment of the application are described in detail below through some embodiments and application scenes thereof with reference to the accompanying drawings.

As shown in fig. 2, an embodiment of the present application provides a method for generating SRS resources, which may be applied to the wireless communication system shown in fig. 1, and includes steps 201 and 202 described below.

Step 201, the terminal generates M first sequences according to the first information.

Wherein, the M first sequences may correspond to one SRS resource. It is understood that the M first sequences are part of the SRS resource, i.e. the M first sequences constitute the SRS resource.

Step 202, the terminal maps the M first sequences onto N orthogonal frequency division multiplexing (Orthogonal frequency division multiplex) OFDM symbols.

The N OFDM symbols may be OFDM symbols occupied by R repetitions of SRS resources in one slot (slot), where N, M and R are positive integers, and N is greater than or equal to M, and N is greater than or equal to R.

It should be noted that, when r=1, the N OFDM symbols may be OFDM symbols occupied by the SRS resource in one slot, and when R > 1, the N OFDM symbols may be OFDM symbols occupied by R repetitions of the SRS resource in one slot. Wherein, the SRS resource may occupy a plurality of OFDM symbols, for example, 2 OFDM symbols, etc. in one repetition.

In the embodiment of the present application, in a first implementation manner, the first information may include at least one of X sequence group indexes and Y sequence indexes corresponding to SRS resources, where the Y sequence indexes belong to a sequence group, and X and Y are integers greater than 1. In a second implementation, the first information may be first indication signaling received from the network side device.

It can be understood that, for the first manner, the terminal may calculate the M first sequences through a calculation formula including a sequence group index and a sequence index.

It should be noted that, for the first implementation manner described above, M > 1. After the terminal generates M first sequences, the terminal may map each of the M first sequences onto one of the N OFDM symbols, respectively, in which case m=n. The terminal may map one of the M first sequences to a plurality of the N OFDM symbols, in which case M < N. For example, m=2, n=4, and r=2, where the first sequence is mapped to the OFDM symbol corresponding to the first repetition, i.e., the first two OFDM symbols in the 4 OFDM symbols, and the second first sequence is mapped to the OFDM symbol corresponding to the second repetition, i.e., the last two OFDM symbols in the 4 OFDM symbols.

Optionally, for the first implementation manner, the values of the X sequence group indexes may be associated with at least one of the following:

symbol indexes of N OFDM symbols;

z sequence identifications (sequence Ids) corresponding to SRS resources, wherein Z is a positive integer;

Identification of SRS resources (SRS-resource id).

The sequence identifier corresponding to the SRS resource and the identifier of the SRS resource may be configured through RRC signaling.

For example, in the case where the SRS resource does not employ sequence group hopping, the values of the X sequence group indices may be associated with the symbol indices of the N OFDM symbols, that is, when the SRS resource does not employ sequence group hopping, the symbol index of the OFDM symbol is one of the variables included in the calculation formula of the sequence group index. For example, the value of the sequence group index is correspondingly increased according to the increment of the symbol index of the OFDM symbol. Thus, each of the N OFDM symbols may be made to correspond to one of the X sequence group indices, respectively. For example, the terminal may generate two sequence group indexes according to the sequence indexes of 2 OFDM, further generate 2 first sequences according to the 2 sequence group indexes, and map to 2 OFDM symbols respectively.

Also for example, the values of the X sequence group indexes may be associated with the Z sequence identifications corresponding to the SRS resources, that is, the sequence identification corresponding to the SRS resources is one of the variables included in the calculation formula of the sequence group index. The Z sequence identifiers may be configured for a network device to use as a terminal.

Optionally, the value of Z is associated with the value of N, that is, the number of sequence identities corresponding to the SRS resource, with the number of OFDM symbols occupied by R repetitions of the SRS resource in one slot, or with the number of OFDM symbols occupied by each repetition of the SRS resource in one slot.

Alternatively, the SRS resource may correspond to a plurality of sequence identifications, i.e., Z is greater than 1. For example, the network side device corresponds to 2 sequence identifiers for one SRS resource configured for the terminal, and the terminal may generate 2 sequence group indexes according to the 2 sequence identifiers, generate 2 first sequences according to the 2 sequence group indexes, and map the 2 first sequences to 2 OFDM symbols respectively.

Optionally, for the first implementation manner, the values of the Y sequence indexes may be associated with at least one of the following:

symbol indexes of N OFDM symbols;

identification of SRS resources (SRS-ResourceID);

orthogonal cover code (Orthogonal Cover Codes, OCC) sequences mapped on SRS resources are valued.

Illustratively, in the case that the values of the Y sequence indexes are associated with the symbol indexes of the N OFDM symbols, the values of the Y sequence indexes may be obtained by performing a modulo-2 operation on the symbol indexes of the N OFDM symbols.

Also for example, in the case where the values of the Y sequence indexes are associated with the values of the OCC sequences mapped on the SRS resource, when an element of the OCC sequence is +1, the value of the sequence index corresponding to the OCC sequence may be 0; when the element of the OCC sequence is-1, the value of the sequence index corresponding to the OCC sequence may be 1.

Alternatively, for the first implementation manner, in the case of r=1, n >1, the SRS resource adopts frequency hopping, and the frequency hopping may include sequence group frequency hopping, or sequence frequency hopping.

Optionally, in the embodiment of the present application, in the case of n=2, the frequency hopping is sequence frequency hopping; in the case of N > 2, the hopping is sequence group hopping.

Note that, for the case where r=1 and n >1, the use of frequency hopping for SRS resources can be understood as follows: in the case of r=1, n >1, the terminal expects that the SRS resource configured or indicated by the network side device is frequency hopped. That is, when the network side device instructs or configures the SRS resource to the terminal, if r=1, n >1, the network side device instructs or configures the SRS resource to the terminal using sequence group hopping, or sequence hopping.

Alternatively, for the first implementation, in the case of R >1, n >1, the OFDM symbols with the same relative symbol index in the R repetitions may correspond to the same first sequence, where the relative symbol index corresponds to the time domain position of the OFDM symbol in each repetition.

Illustratively, as shown in fig. 3, n=4 and r=2 are assumed, i.e. each repetition of the SRS resource on one slot occupies 2 OFDM symbols, wherein the first repetition of the SRS resource on one slot occupies 2 nd and 3 rd OFDM symbols and the 2 nd repetition occupies 4 th and 5 th OFDM symbols. Wherein, the symbol index of the 2 nd OFDM symbol is 1, the symbol index of the 3 rd OFDM symbol is 2, the symbol index of the 4 th OFDM symbol is 3, and the symbol index of the 5 th OFDM symbol is 4. Then, the relative symbol indexes of the 2 nd OFDM symbol and the 4 th OFDM symbol on the time slot are the same, and the relative symbol indexes of the 2 nd OFDM symbol and the 4 th OFDM symbol are #0; the relative symbol indexes of the 3 rd OFDM symbol and the 5 th OFDM symbol on the time slot are the same, namely the 2 nd OFDM symbol occupied by each repetition, namely the relative symbol indexes of the 3 rd OFDM symbol and the 5 th OFDM symbol are #1.

In the embodiment of the present application, in the case where R >1 and N >1, the number of the first sequences may be a ratio of the number N of OFDM symbols occupied by R repetitions of the SRS resource in one slot to the repetition number R, that is, m=n/R.

Alternatively, in an embodiment of the present application, the above-described identical first sequence may satisfy at least one of the following conditions:

corresponding to the same sequence group index;

corresponding to the same sequence index.

In the embodiment of the present application, since there may be a plurality of variables in the calculation formula of the first sequence, the same first sequence may be calculated by different sequence group indexes and different sequence indexes. Therefore, the same first sequence in the embodiment of the present application may also correspond to different sequence group indexes and different sequence indexes.

In the embodiment of the application, the terminal can generate a plurality of first sequences corresponding to the SRS resources according to at least one of the X sequence group indexes and the Y sequence indexes corresponding to the SRS resources, so that the terminal can map different first sequences on the N OFDM symbols, thereby increasing the diversity of the first sequences mapped on the OFDM symbols. Thus, when more users are in the network, the interference between sequences mapped on the OFDM symbols by the SRS resources of the terminal can be reduced, so that the channel estimation performance of the SRS resources can be ensured, and the transmission performance of the system is further ensured.

Optionally, in the embodiment of the present application, for the second implementation manner (the first information is the first indication signaling received from the network side device), the sequence generating method of SRS provided in the embodiment of the present application may further include the following step 203 and step 204.

Step 203, the network side device sends a first indication signaling to the terminal.

Step 204, the terminal receives the first indication signaling from the network side device.

The first indication signaling may have three cases, namely a first case, a second case and a third case. These three cases are each exemplarily described below.

First case: the first indication signaling may be used to indicate or update a sequence identifier (sequence id) corresponding to the SRS resource.

It may be appreciated that, in the first case, the first indication signaling may be used to indicate a sequence identifier corresponding to the SRS resource, or the first indication signaling may be used to indicate the terminal to update the sequence identifier corresponding to the SRS resource.

Second case: the first indication signaling may be used to indicate or update an SRS resource set, where the SRS resource set is a resource set where an SRS resource is located.

It may be appreciated that, in the second case, the first indication signaling may be used to indicate an SRS resource set in which SRS resources are located, or the first indication signaling may be used to indicate the terminal to update the SRS resource set in which SRS resources are located.

Third case: the first indication signaling may be used to trigger an aperiodic SRS resource set, where the aperiodic SRS resource set is a resource set where SRS resources are located.

It can be appreciated that, in the third case, the network side device has configured an aperiodic SRS resource set to the terminal, and the first indication signaling is used to trigger the aperiodic SRS resource set to take effect. For example, the first indication signaling may be an SRS request (SRS request) in DCI.

Optionally, in an embodiment of the present application, the first indication signaling is a media access control (medium access control, MAC) Control Element (CE) signaling or a downlink control information (downlink control information, DCI) signaling.

In the embodiment of the present application, in the first case (where the first indication signaling is used to indicate or update the sequence identifier corresponding to the SRS resource), the first indication signaling is associated with the identifier (SRS-resource id) of the SRS resource.

In the embodiment of the present application, in the first case, the first indication signaling may correspond to an SRS resource set where SRS resources are located, that is, the first indication signaling corresponds to one SRS resource set. The first indication signaling may update sequence identifiers corresponding to K SRS resources in the SRS resource set, where K may include the SRS resource, and K is a positive integer. The first indication signaling may be indicated in the form of a bitmap (bitmap) of L bits. For example, if there are 8 SRS resources in one SRS resource set corresponding to the first indication signaling, l=8. The 8 bits of higher order to lower order are corresponding to the 8 SRS resource identifiers (SRS-Resourceid) in order from small to large. Wherein, bit 1 indicates a sequence identifier corresponding to the updated SRS resource, and bit 0 indicates a sequence identifier corresponding to the non-updated SRS resource. And the first indication signaling additionally indicates the sequence identifier corresponding to the SRS resource to be updated.

In the embodiment of the present application, in the second case described above (where the first indication signaling is used to indicate or update the SRS resource set), if the SRS resource set is periodic or semi-persistent, the SRS resource set is replaced with the SRS resource set indicated by the first indication signaling.

Optionally, in the third case (where the first indication signaling is used to trigger the aperiodic SRS resource set), and where the SRS resource corresponds to W sequence identities, the sequence generating method for SRS provided by the embodiment of the present application may further include the following step 205.

Step 205, the terminal selects one sequence identifier from W sequence identifiers according to the second indication signaling, where the one sequence identifier may be used to generate the M first sequences, and W is an integer greater than 1.

The second indication signaling may be the first indication signaling or other indication signaling received by the terminal from the network side device.

Optionally, based on the step 205, if the aperiodic SRS resource set associates L aperiodic SRS resource triggers (aperiodic SRS-resource trigger), where L is a positive integer, in an implementation manner, the method for generating the sequence of the SRS provided by the embodiment of the present application may further include the following steps 206 and 207.

Step 206, the network side device sends a third indication signaling to the terminal.

Step 207, the terminal receives the third indication signaling from the network side device.

The third indication signaling may be used to indicate a correspondence between the L aperiodic SRS resource triggers and the W sequence identifications.

Optionally, in the embodiment of the present application, each SRS resource in the aperiodic SRS resource set is associated with W sequence identifications.

Optionally, in an embodiment of the present application, the third indication signaling may be DCI signaling. For example, the correspondence between the L aperiodic SRS resource triggers and the W sequence identifications may be indicated by a new DCI domain (such as one or more bits) in the DCI signaling.

Optionally, based on the step 205, in another embodiment, if the aperiodic SRS resource set associates W aperiodic SRS resource triggers, the terminal and the network side device default to agree that an nth aperiodic SRS resource trigger in the W aperiodic SRS resource triggers corresponds to an nth sequence identifier in the W sequence identifiers, where 1 n is equal to or less than or equal to W.

Based on this further embodiment, each SRS resource in the aperiodic SRS resource set is associated with W sequence identifications.

Optionally, based on the step 205, in another embodiment, if the aperiodic SRS resource set is associated with 1 aperiodic SRS resource trigger, the terminal and the network side device default agree that the 1 st sequence identifier in the W corresponding sequence identifiers is the 1 st aperiodic SRS resource trigger.

In the embodiment of the application, the terminal can generate the first sequence corresponding to the SRS resource according to the first indication signaling received from the network side equipment, namely, the terminal can dynamically generate the first sequence according to the indication of the network side equipment, so that the first sequence corresponding to the SRS resource mapped to the OFDM symbol is more flexible. Thus, when more users are in the network, the interference between sequences mapped on the OFDM symbols by the SRS resources of the terminal can be reduced, so that the channel estimation performance of the SRS resources can be ensured, and the transmission performance of the system is further ensured.

Optionally, after the step 201, the method for generating the sequence of the SRS provided by the embodiment of the present application may further include a step 208 described below.

Step 208, the terminal superimposes the scrambling sequences on the N OFDM symbols, respectively.

It is understood that the terminal may superimpose the scrambling sequence on each of the N OFDM symbols, respectively. The terminal may superimpose different scrambling sequences on different OFDM symbols, or superimpose different scrambling sequences on multiple OFDM symbols in the N OFDM symbols, which may be specifically determined according to actual use requirements, and the embodiment of the present application is not limited.

Optionally, in an embodiment of the present application, a scrambling sequence corresponding to one OFDM symbol may be associated with at least one of the following:

a symbol index of one OFDM symbol;

sequence identification (sequeneid) corresponding to SRS resource;

a sequence group index corresponding to a second sequence, wherein the second sequence may be a first sequence corresponding to the one OFDM symbol;

a sequence index corresponding to the second sequence;

scrambling code identification configured by network side equipment;

bandwidth occupied by SRS resources.

The one OFDM symbol may be any one of the N OFDM symbols.

In the embodiment of the application, because the terminal can respectively superimpose the scrambling sequences on the N OFDM symbols, SRS resources transmitted on the N OFDM symbols can be distinguished from SRS resources transmitted by other users in the network, thereby improving the anti-interference capability of the SRS resources and further ensuring the transmission performance of the system.

As shown in fig. 4, an embodiment of the present application further provides a sequence indication method of SRS, where the sequence indication method of SRS may include the following step 401.

Step 401, the network side device sends a first indication signaling to the terminal.

The first indication signaling is used for indicating or updating a sequence identifier corresponding to the SRS resource; or the first indication signaling is used for indicating or updating the SRS resource set, wherein the SRS resource set is the resource set where the SRS resource is located; or the first indication signaling is used for triggering an aperiodic SRS resource set, wherein the aperiodic SRS resource set is a resource set where SRS resources are located.

Optionally, in an embodiment of the present application, the first indication signaling is MAC CE signaling or DCI signaling.

Optionally, in the embodiment of the present application, in a case where the first indication signaling is used to indicate or update a sequence identifier corresponding to the SRS resource, the first indication signaling is associated with the identifier of the SRS resource.

Optionally, in the embodiment of the present application, when the first indication signaling is used to indicate or update the sequence identifier corresponding to the SRS resource, the first indication signaling corresponds to the SRS resource set where the SRS resource is located; the first indication signaling indicates or updates sequence identifications corresponding to K SRS resources in the SRS resource set, wherein the K SRS resources comprise SRS resources, and K is a positive integer.

Optionally, in the embodiment of the present application, in a case where the first indication signaling is used to indicate or update the SRS resource set, if the SRS resource set is periodic or semi-persistent, the SRS resource set is replaced with the SRS resource set indicated by the first indication signaling.

Optionally, in the embodiment of the present application, in the case that the first indication signaling is used to trigger the aperiodic SRS resource set and the SRS resource corresponds to W sequence identifications, the sequence indication method for SRS provided in the embodiment of the present application may further include the following step 402.

Step 402, the network side device instructs the terminal to select one sequence identifier from W sequence identifiers through a second instruction signaling, where W is an integer greater than 1, and one sequence identifier is used to generate M first sequences.

The second indication signaling may be the first indication signaling, or other indication signaling.

Optionally, in the embodiment of the present application, if the aperiodic SRS resource set is associated with L aperiodic SRS resource triggers, where L is a positive integer, the sequence indication method for SRS provided in the embodiment of the present application may further include the following step 403.

Step 403, the network side device sends a third indication signaling to the terminal, where the third indication signaling is used to indicate the correspondence between the L aperiodic SRS resource triggers and the W sequence identifications.

Optionally, in the embodiment of the present application, if the aperiodic SRS resource set is associated with W aperiodic SRS resource triggers, the network side device and the terminal default agree that an nth aperiodic SRS resource trigger in the W aperiodic SRS resource triggers corresponds to an nth sequence identifier in the W sequence identifiers, where n is greater than or equal to 1 and less than or equal to W.

Optionally, in the embodiment of the present application, if the aperiodic SRS resource set is associated with 1 aperiodic SRS resource trigger, the network side device and the terminal default agree that the 1 st sequence identifier in the W sequence identifiers corresponds to the 1 st aperiodic SRS resource trigger.

In the embodiment of the application, the network side equipment can dynamically indicate or update the sequence identifier corresponding to the SRS resource through the first indication signaling, or dynamically indicate or update the SRS resource set, or dynamically trigger the aperiodic SRS resource set, so that the terminal can be instructed to generate or update the first sequence corresponding to the SRS resource. The terminal can dynamically generate the first sequence according to the indication of the network side equipment, so that the first sequence corresponding to the SRS resource mapped to the OFDM symbol is more flexible. Thus, when more users are in the network, the interference between sequences mapped on the OFDM symbols by the SRS resources of the terminal can be reduced, so that the channel estimation performance of the SRS resources can be ensured, and the transmission performance of the system is further ensured.

According to the SRS sequence generation method provided by the embodiment of the application, the execution main body can be the SRS sequence generation device. In the embodiment of the present application, an SRS sequence generating apparatus according to the embodiment of the present application will be described by taking an SRS sequence generating method performed by the SRS sequence generating apparatus as an example.

As shown in fig. 5, an embodiment of the present application provides an SRS sequence generating apparatus 500, where the SRS sequence generating apparatus 500 includes a generating module 501 and a mapping module 502. A generating module 501, configured to generate M first sequences according to the first information, where the M first sequences correspond to one SRS resource; the mapping module 502 is configured to map the M first sequences onto N OFDM symbols, where the N OFDM symbols are OFDM symbols occupied by R repetitions of SRS resources in one slot, both N, M and R are positive integers, N is greater than or equal to M, and N is greater than or equal to R; the first information comprises at least one of X sequence group indexes and Y sequence indexes corresponding to SRS resources, wherein the Y sequence indexes belong to one sequence group, and X and Y are integers larger than 1; or, the first information is a first indication signaling received from the network side device.

Optionally, in an embodiment of the present application, the values of the X sequence group indexes are associated with at least one of the following:

symbol indexes of N OFDM symbols;

z sequence identifications corresponding to SRS resources, wherein Z is a positive integer;

identification of SRS resources.

Optionally, in an embodiment of the present application, the values of the Y sequence indexes are associated with at least one of the following:

symbol indexes of N OFDM symbols;

identification of SRS resources;

and the value of the OCC sequence mapped on the SRS resource.

Optionally, in the embodiment of the present application, in the case where r=1, n >1, the SRS resource adopts frequency hopping, where frequency hopping includes sequence group frequency hopping, or sequence frequency hopping.

Optionally, in the embodiment of the present application, in the case of R >1, n >1, the OFDM symbols with the same relative symbol index in R repetitions correspond to the same first sequence, and the relative symbol index corresponds to the time domain position of the OFDM symbol in each repetition.

Optionally, in an embodiment of the present application, the same first sequence satisfies at least one of the following conditions:

corresponding to the same sequence group index;

Corresponding to the same sequence index.

Optionally, in the embodiment of the present application, the SRS sequence generating apparatus further includes a receiving module; a receiving module, configured to receive a first indication signaling from a network side device; the first indication signaling is used for indicating or updating a sequence identifier corresponding to the SRS resource; or the first indication signaling is used for indicating or updating the SRS resource set, wherein the SRS resource set is the resource set where the SRS resource is located; or the first indication signaling is used for triggering an aperiodic SRS resource set, wherein the aperiodic SRS resource set is a resource set where SRS resources are located.

Optionally, in the embodiment of the present application, when the first indication signaling is used to trigger the aperiodic SRS resource set and the SRS resource corresponds to W sequence identifications, the sequence generating apparatus for SRS further includes a selection module; the selection module is used for selecting one sequence identifier from W sequence identifiers according to the second indication signaling, wherein the one sequence identifier is used for generating M first sequences, and W is an integer greater than 1; the second indication signaling is the first indication signaling or other indication signaling received by the terminal from the network side equipment.

Optionally, in the embodiment of the present application, if the aperiodic SRS resource set associates L aperiodic SRS resource triggers, where L is a positive integer, the receiving module is further configured to receive a third indication signaling from the network side device, where the third indication signaling is used to indicate a correspondence between the L aperiodic SRS resource triggers and W sequence identifiers.

Optionally, in the embodiment of the present application, if the aperiodic SRS resource set is associated with W aperiodic SRS resource triggers, the terminal and the network side device default agree that an nth aperiodic SRS resource trigger in the W aperiodic SRS resource triggers corresponds to an nth sequence identifier in the W sequence identifiers, where n is greater than or equal to 1 and less than or equal to W.

Optionally, in the embodiment of the present application, if the aperiodic SRS resource set is associated with 1 aperiodic SRS resource trigger, the terminal and the network side device default agree that the 1 st sequence identifier in the W sequence identifiers corresponds to the 1 st aperiodic SRS resource trigger.

Optionally, in the embodiment of the present application, the SRS sequence generating apparatus further includes a superposition module; and the superposition module is used for respectively superposing the scrambling code sequences on the N OFDM symbols.

Optionally, in an embodiment of the present application, a scrambling sequence corresponding to one OFDM symbol is associated with at least one of the following:

a symbol index of one OFDM symbol;

sequence identification corresponding to SRS resources;

a sequence group index corresponding to a second sequence, wherein the second sequence is a first sequence corresponding to one OFDM symbol;

a sequence index corresponding to the second sequence;

scrambling code identification configured by network side equipment;

bandwidth occupied by SRS resources.

According to the SRS sequence generation device provided by the embodiment of the application, a plurality of first sequences can be generated according to at least one of the X sequence group indexes and the Y sequence indexes corresponding to the SRS resources, so that different first sequences can be mapped on the N OFDM symbols, and the diversity of the first sequences mapped on the OFDM symbols is increased. And the first sequence corresponding to the SRS resource can be generated according to the first indication signaling received from the network side equipment, namely the first sequence can be dynamically generated according to the indication of the network side equipment, so that the first sequence corresponding to the SRS resource mapped to the OFDM symbol is more flexible. Thus, when more users are in the network, the interference between sequences mapped on the OFDM symbols by the SRS resources of the terminal can be reduced, so that the channel estimation performance of the SRS resources can be ensured, and the transmission performance of the system is further ensured.

According to the SRS sequence indication method provided by the embodiment of the application, the execution main body can be the SRS sequence indication device. In the embodiment of the present application, an example of a method for executing the sequence indication of the SRS by the sequence indication device of the SRS is described.

As shown in fig. 6, an embodiment of the present application provides an SRS sequence indicating apparatus 600, where the SRS sequence indicating apparatus 600 includes a transmitting module 601. A sending module 601, configured to send a first indication signaling to a terminal; the first indication signaling is used for indicating or updating a sequence identifier corresponding to the SRS resource; or the first indication signaling is used for indicating or updating the SRS resource set, wherein the SRS resource set is the resource set where the SRS resource is located; or the first indication signaling is used for triggering an aperiodic SRS resource set, wherein the aperiodic SRS resource set is a resource set where SRS resources are located.

Optionally, in the embodiment of the present application, when the first indication signaling is used to trigger the aperiodic SRS resource set and the SRS resource corresponds to W sequence identifications, the sequence indication device for SRS further includes an indication module; the indication module is used for indicating the terminal to select one sequence identifier from W sequence identifiers through a second indication signaling, wherein the one sequence identifier is used for generating M first sequences, and W is an integer greater than 1; wherein the second indication signaling is the first indication signaling, or other indication signaling.

Optionally, in the embodiment of the present application, if the aperiodic SRS resource set associates L aperiodic SRS resource triggers, where L is a positive integer, the sending module is further configured to send a third indication signaling to the terminal, where the third indication signaling is used to indicate a correspondence between the L aperiodic SRS resource triggers and W sequence identifiers.

According to the SRS sequence indicating device provided by the embodiment of the application, the sequence identification corresponding to the SRS resource can be dynamically indicated or updated through the first indication signaling, or the SRS resource set can be dynamically indicated or updated, or the aperiodic SRS resource set can be dynamically triggered, so that the terminal can be indicated to generate or update the first sequence corresponding to the SRS resource. The terminal can dynamically generate the first sequence according to the indication of the SRS sequence indication device, so that the first sequence corresponding to the SRS resource mapped to the OFDM symbol is more flexible. Thus, when more users are in the network, the interference between sequences mapped on the OFDM symbols by the SRS resources of the terminal can be reduced, so that the channel estimation performance of the SRS resources can be ensured, and the transmission performance of the system is further ensured.

The SRS sequence generating apparatus in the embodiment of the present application may be an electronic device, for example, an electronic device with an operating system, or may be a component in an electronic device, for example, an integrated circuit or a chip. The electronic device may be a terminal, or may be other devices than a terminal. The terminal may include, but is not limited to, the types of the terminal 11 listed above, and the sequence indication device of the SRS may be a network side device, for example, a base station, etc., which is not limited in particular.

The SRS sequence generating apparatus provided in the embodiment of the present application can implement each process implemented by the terminal in the method embodiment, and achieve the same technical effect, and in order to avoid repetition, a description is omitted here.

Optionally, as shown in fig. 7, the embodiment of the present application further provides a communication device 700, including a processor 701 and a memory 702, where the memory 702 stores a program or instructions that can be executed on the processor 701, for example, when the communication device m00 is a terminal, the program or instructions implement the steps of the above-mentioned SRS sequence generating method embodiment when executed by the processor 701, and achieve the same technical effects. When the communication device 700 is a network side device, the program or the instruction implements the steps of the above-mentioned SRS sequence indication method embodiment when executed by the processor 701, and the same technical effects can be achieved, so that repetition is avoided, and no further description is given here.

The embodiment of the application also provides a terminal, which comprises a processor and a communication interface, wherein the processor is used for generating M first sequences according to the first information, and the M first sequences correspond to one SRS resource; mapping M first sequences onto N Orthogonal Frequency Division Multiplexing (OFDM) symbols, wherein the N OFDM symbols are OFDM symbols occupied by R times of repetition of SRS resources in one time slot, N, M and R are positive integers, N is more than or equal to M, and N is more than or equal to R; the first information comprises at least one of 1 sequence group index and Y sequence indexes corresponding to SRS resources, wherein the Y sequence indexes belong to one sequence group, and 1 and Y are integers larger than 1; or, the first information is a first indication signaling received from the network side device. The terminal embodiment corresponds to the terminal-side method embodiment, and each implementation process and implementation manner of the method embodiment can be applied to the terminal embodiment, and the same technical effects can be achieved. Specifically, fig. 8 is a schematic diagram of a hardware structure of a terminal for implementing an embodiment of the present application.

The terminal 100 includes, but is not limited to: at least some of the components of the radio frequency unit 101, the network module 102, the audio output unit 103, the input unit 104, the sensor 105, the display unit 106, the user input unit 107, the interface unit 108, the memory 109, and the processor 110, etc.

Those skilled in the art will appreciate that the terminal 100 may further include a power source (e.g., a battery) for powering the various components, and the power source may be logically coupled to the processor 110 by a power management system to perform functions such as managing charging, discharging, and power consumption by the power management system. The terminal structure shown in fig. 8 does not constitute a limitation of the terminal, and the terminal may include more or less components than shown, or may combine certain components, or may be arranged in different components, which will not be described in detail herein.

It should be appreciated that in embodiments of the present application, the input unit 104 may include a graphics processing unit (Graphics Processing Unit, GPU) 1041 and a microphone 1042, with the graphics processor 1041 processing image data of still pictures or video obtained by an image capturing device (e.g., a camera) in a video capturing mode or an image capturing mode. The display unit 106 may include a display panel 1061, and the display panel 1061 may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like. The user input unit 107 includes at least one of a touch panel 1071 and other input devices 1072. The touch panel 1071 is also referred to as a touch screen. The touch panel 1071 may include two parts of a touch detection device and a touch controller. Other input devices 1072 may include, but are not limited to, a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, a joystick, and so forth, which are not described in detail herein.

In the embodiment of the present application, after receiving downlink data from a network side device, the radio frequency unit 101 may transmit the downlink data to the processor 110 for processing; in addition, the radio frequency unit 101 may send uplink data to the network side device. Typically, the radio frequency unit 101 includes, but is not limited to, an antenna, an amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like.

Memory 109 may be used to store software programs or instructions and various data. The memory 109 may mainly include a first memory area storing programs or instructions and a second memory area storing data, wherein the first memory area may store an operating system, application programs or instructions (such as a sound playing function, an image playing function, etc.) required for at least one function, and the like. Further, the memory 109 may include volatile memory or nonvolatile memory, or the memory 109 may include both volatile and nonvolatile memory. The nonvolatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable EPROM (EEPROM), or a flash Memory. The volatile memory may be random access memory (Random Access Memory, RAM), static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double Data Rate SDRAM (ddr SDRAM), enhanced SDRAM (Enhanced SDRAM), synchronous DRAM (SLDRAM), and Direct RAM (DRRAM). Memory 109 in embodiments of the present application includes, but is not limited to, these and any other suitable types of memory.

Processor 110 may include one or more processing units; optionally, the processor 110 integrates an application processor that primarily processes operations involving an operating system, user interface, application programs, etc., and a modem processor that primarily processes wireless communication signals, such as a baseband processor. It will be appreciated that the modem processor described above may not be integrated into the processor 110.

The processor 110 is configured to generate M first sequences according to the first information, where the M first sequences correspond to one SRS resource; mapping M first sequences onto N OFDM symbols, wherein the N OFDM symbols are OFDM symbols occupied by R times of repetition of SRS resources in one time slot, N, M and R are positive integers, N is more than or equal to M, and N is more than or equal to R; the first information comprises at least one of X sequence group indexes and Y sequence indexes corresponding to SRS resources, wherein the Y sequence indexes belong to one sequence group, and X and Y are integers larger than 1; or, the first information is a first indication signaling received from the network side device.

According to the terminal provided by the embodiment of the application, as a plurality of first sequences can be generated according to at least one of the X sequence group indexes and the Y sequence indexes corresponding to the SRS resource, different first sequences can be mapped on the N OFDM symbols, so that the diversity of the first sequences mapped on the OFDM symbols is increased. Or, the first sequence corresponding to the SRS resource may be generated according to the first indication signaling received from the network side device, that is, the first sequence may be dynamically generated according to the indication of the SRS sequence indication device, so that the first sequence corresponding to the SRS resource mapped to the OFDM symbol is more flexible. Thus, when more users are in the network, the interference between sequences mapped on the OFDM symbols by the SRS resources of the terminal can be reduced, so that the channel estimation performance of the SRS resources can be ensured, and the transmission performance of the system is further ensured.

The embodiment of the application also provides network side equipment, which comprises a processor and a communication interface, wherein the communication interface is used for sending a first indication signaling to the terminal; the first indication signaling is used for indicating or updating a sequence identifier corresponding to the SRS resource; or the first indication signaling is used for indicating or updating the SRS resource set, wherein the SRS resource set is the resource set where the SRS resource is located; or the first indication signaling is used for triggering an aperiodic SRS resource set, wherein the aperiodic SRS resource set is a resource set where SRS resources are located.

The network side device embodiment corresponds to the network side device method embodiment, and each implementation process and implementation manner of the method embodiment can be applied to the network side device embodiment, and the same technical effects can be achieved.

Specifically, the embodiment of the application also provides network side equipment. As shown in fig. 9, the network side device 900 includes: an antenna 91, a radio frequency device 92, a baseband device 93, a processor 94 and a memory 95. The antenna 91 is connected to a radio frequency device 92. In the uplink direction, the radio frequency device 92 receives information via the antenna 91, and transmits the received information to the baseband device 93 for processing. In the downlink direction, the baseband device 93 processes information to be transmitted, and transmits the processed information to the radio frequency device 92, and the radio frequency device 92 processes the received information and transmits the processed information through the antenna 91.

The method performed by the network side device in the above embodiment may be implemented in the baseband apparatus 93, and the baseband apparatus 93 includes a baseband processor.

The baseband device 93 may, for example, include at least one baseband board, where a plurality of chips are disposed, as shown in fig. 9, where one chip, for example, a baseband processor, is connected to the memory 95 through a bus interface, so as to call a program in the memory 95, and perform the network side device operation shown in the above method embodiment.

The network-side device may also include a network interface 96, such as a common public radio interface (common public radio interface, CPRI).

Specifically, the network side device 900 of the embodiment of the present application further includes: instructions or programs stored in the memory 95 and executable on the processor 94, the processor 94 invokes the instructions or programs in the memory 95 to perform the methods performed by the modules shown in fig. 6 and achieve the same technical effects, and are not repeated here.

The embodiment of the application also provides a readable storage medium, and the readable storage medium stores a program or an instruction, which when executed by a processor, implements each process of the above-mentioned SRS sequence generation method or SRS sequence indication method embodiment, and can achieve the same technical effect, so that repetition is avoided, and no redundant description is provided herein.

Wherein the processor is the processor in the terminal in the above embodiment. Readable storage media include computer readable storage media such as computer readable memory ROM, random access memory RAM, magnetic or optical disks, and the like.

The embodiment of the application further provides a chip, the chip comprises a processor and a communication interface, the communication interface is coupled with the processor, the processor is used for running a program or instructions, the sequence generation method of the SRS or each process of the sequence indication method embodiment of the SRS is realized, the same technical effect can be achieved, and the repetition is avoided, and the repeated description is omitted.

It should be understood that the chips referred to in the embodiments of the present application may also be referred to as system-on-chip chips, or the like.

The embodiment of the present application further provides a computer program/program product, where the computer program/program product is stored in a storage medium, and the computer program/program product is executed by at least one processor to implement the above-mentioned SRS sequence generating method or each process of the SRS sequence indicating method embodiment, and the same technical effects can be achieved, so that repetition is avoided, and details are not repeated here.

The embodiment of the application also provides a wireless communication system, which comprises: the terminal and the network side device, the terminal may be configured to perform the steps of the sequence generating method of the SRS, and the network side device may be configured to perform the steps of the sequence indicating method of the SRS.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Furthermore, it should be noted that the scope of the methods and apparatus in the embodiments of the present application is not limited to performing the functions in the order shown or discussed, but may also include performing the functions in a substantially simultaneous manner or in an opposite order depending on the functions involved, e.g., the described methods may be performed in an order different from that described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

From the above description of the embodiments, it will be clear to those skilled in the art that the above-described embodiment method may be implemented by means of software plus a necessary general hardware platform, but of course may also be implemented by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art in the form of a computer software product stored in a storage medium (e.g. ROM/RAM, magnetic disk, optical disk), comprising instructions for causing a terminal (which may be a mobile phone, a computer, a server, an air conditioner, etc.), or a network side device to perform the method of the various embodiments of the present application.

The embodiments of the present application have been described above with reference to the accompanying drawings, but the present application is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those having ordinary skill in the art without departing from the spirit of the present application and the scope of the claims, which are to be protected by the present application.

Claims

1. A sequence generation method of SRS, comprising:

the terminal generates M first sequences according to the first information, wherein the M first sequences correspond to one sounding reference signal SRS resource;

the terminal maps the M first sequences to N Orthogonal Frequency Division Multiplexing (OFDM) symbols, wherein the N OFDM symbols are OFDM symbols occupied by R times of repetition of the SRS resource in one time slot, N, M and R are positive integers, N is more than or equal to M, and N is more than or equal to R;

the first information comprises at least one of X sequence group indexes and Y sequence indexes corresponding to the SRS resource, wherein the Y sequence indexes belong to one sequence group, and X and Y are integers larger than 1; or the first information is a first indication signaling received from the network side equipment.

2. The method of claim 1, wherein the value of the X sequence group indices is associated with at least one of:

symbol indexes of the N OFDM symbols;

z sequence identifications corresponding to the SRS resources, wherein Z is a positive integer;

and the identification of the SRS resource.

3. The method of claim 1, wherein the values of the Y sequence indices are associated with at least one of:

symbol indexes of the N OFDM symbols;

identification of the SRS resources;

and the value of the orthogonal cover code OCC sequence mapped on the SRS resource.

4. The method of claim 1, wherein the SRS resource employs frequency hopping in the case of R = 1, n >1, the frequency hopping comprising sequence group hopping, or sequence hopping.

5. The method of claim 4, wherein the step of determining the position of the first electrode is performed,

in the case of n=2, the frequency hopping is sequence frequency hopping;

and under the condition that N is more than 2, the frequency hopping is sequence group frequency hopping.

6. The method of claim 1, wherein in the case of R >1, n >1, OFDM symbols with the same relative symbol index in the R repetitions correspond to the same first sequence, the relative symbol index corresponding to the time domain position of the OFDM symbol in each repetition.

7. The method of claim 6, wherein the identical first sequence satisfies at least one of the following conditions:

corresponding to the same sequence group index;

corresponding to the same sequence index.

8. The method of claim 1, wherein prior to generating the M first sequences from the first information, the method further comprises:

the terminal receives the first indication signaling from the network side equipment;

the first indication signaling is used for indicating or updating a sequence identifier corresponding to the SRS resource; or (b)

The first indication signaling is used for indicating or updating an SRS resource set, wherein the SRS resource set is a resource set where the SRS resource is located; or (b)

The first indication signaling is used for triggering an aperiodic SRS resource set, wherein the aperiodic SRS resource set is a resource set where the SRS resource is located.

9. The method according to claim 8, wherein the first indication signaling is medium access control MAC control element CE signaling or downlink control information DCI signaling.

10. The method of claim 8, wherein the first indication signaling is associated with an identity of the SRS resource if the first indication signaling is used to indicate or update a sequence identity corresponding to the SRS resource.

11. The method of claim 8, wherein the first indication signaling corresponds to an SRS resource set in which the SRS resource is located if the first indication signaling is used to indicate or update a sequence identity corresponding to the SRS resource;

the first indication signaling indicates or updates sequence identifications corresponding to K SRS resources in the SRS resource set, where K is a positive integer, and the K SRS resources include the SRS resources.

12. The method of claim 8, wherein in the case where the first indication signaling is used to indicate or update a set of SRS resources, if the set of SRS resources is periodic or semi-persistent, the set of SRS resources is replaced with a set of SRS resources indicated by the first indication signaling.

13. The method of claim 8, wherein in the case where the first indication signaling is used to trigger a set of aperiodic SRS resources and the SRS resources correspond to W sequence identifications, the method further comprises:

the terminal selects one sequence identifier from the W sequence identifiers according to a second indication signaling, wherein the one sequence identifier is used for generating the M first sequences, and W is an integer greater than 1;

The second indication signaling is the first indication signaling or other indication signaling received by the terminal from the network side equipment.

14. The method of claim 13, wherein if the set of aperiodic SRS resources is associated with L aperiodic SRS resource triggers, L being a positive integer, the method further comprises:

and the terminal receives a third indication signaling from the network side equipment, wherein the third indication signaling is used for indicating the corresponding relation between the L aperiodic SRS resource triggers and the W sequence identifications.

15. The method of claim 13, wherein if the aperiodic SRS resource set associates W aperiodic SRS resource triggers, the terminal and the network side device default agree that an nth aperiodic SRS resource trigger in the W aperiodic SRS resource triggers corresponds to an nth sequence identifier in the W sequence identifiers, and 1 n is less than or equal to W.

16. The method of claim 13, wherein if the set of aperiodic SRS resources is associated with 1 aperiodic SRS resource trigger, the terminal and the network side device default agree that the 1 st aperiodic SRS resource trigger corresponds to a 1 st sequence identity of the W sequence identities.

17. The method of claim 1, wherein after the generating the M first sequences, the method further comprises:

the terminal superimposes scrambling sequences on the N OFDM symbols, respectively.

18. The method of claim 17, wherein the scrambling sequence corresponding to one OFDM symbol is associated with at least one of:

a symbol index of the one OFDM symbol;

a sequence identifier corresponding to the SRS resource;

a sequence group index corresponding to a second sequence, wherein the second sequence is a first sequence corresponding to the one OFDM symbol;

a sequence index corresponding to the second sequence;

the scrambling code identifier configured by the network side equipment;

and the bandwidth occupied by the SRS resources.

19. A sequence indication method of SRS, comprising:

the network side equipment sends a first indication signaling to the terminal;

20. The method according to claim 19, wherein the first indication signaling is medium access control MAC control element CE signaling or downlink control information DCI signaling.

21. The method of claim 19, wherein the first indication signaling is associated with an identity of the SRS resource if the first indication signaling is used to indicate or update a sequence identity corresponding to the SRS resource.

22. The method of claim 19, wherein the first indication signaling corresponds to a set of SRS resources in which the SRS resources are located if the first indication signaling is used to indicate or update a sequence identity corresponding to the SRS resources;

23. The method of claim 19, wherein in the case where the first indication signaling is used to indicate or update a set of SRS resources, if the set of SRS resources is periodic or semi-persistent, the set of SRS resources is replaced with a set of SRS resources indicated by the first indication signaling.

24. The method of claim 19, wherein in the case where the first indication signaling is used to trigger a set of aperiodic SRS resources and the SRS resources correspond to W sequence identifications, the method further comprises:

the network side equipment instructs the terminal to select one sequence identifier from the W sequence identifiers through a second instruction signaling, wherein the one sequence identifier is used for generating the M first sequences, and W is an integer greater than 1;

wherein the second indication signaling is the first indication signaling, or other indication signaling.

25. The method of claim 24, wherein if the set of aperiodic SRS resources is associated with L aperiodic SRS resource triggers, L being a positive integer, the method further comprises:

and the network side equipment sends a third indication signaling to the terminal, wherein the third indication signaling is used for indicating the corresponding relation between the L aperiodic SRS resource triggers and the W sequence identifications.

26. The method of claim 24, wherein if the aperiodic SRS resource set associates W aperiodic SRS resource triggers, the network side device and the terminal default agree that an nth aperiodic SRS resource trigger in the W aperiodic SRS resource triggers corresponds to an nth sequence identifier in the W sequence identifiers, 1 n W.

27. The method of claim 24, wherein if the set of aperiodic SRS resources is associated with 1 aperiodic SRS resource trigger, the network side device and the terminal default agree that the 1 st one of the W sequence identifications corresponds to the 1 st one of the W aperiodic SRS resource triggers.

28. An SRS sequence generating apparatus, wherein the apparatus includes a generating module and a mapping module;

the generating module is configured to generate M first sequences according to the first information, where the M first sequences correspond to one sounding reference signal SRS resource;

the mapping module is configured to map the M first sequences onto N orthogonal frequency division multiplexing OFDM symbols, where the N OFDM symbols are OFDM symbols occupied by R repetitions of the SRS resource in one slot, each of N, M and R is a positive integer, N is greater than or equal to M, and N is greater than or equal to R;

29. The apparatus of claim 28, wherein the value of the X sequence group index is associated with at least one of:

Symbol indexes of the N OFDM symbols;

and the identification of the SRS resource.

30. The apparatus of claim 28, wherein the values of the Y sequence indices are associated with at least one of:

symbol indexes of the N OFDM symbols;

identification of the SRS resources;

31. The apparatus of claim 28, wherein the SRS resource employs frequency hopping in the case of r=1, n >1, the frequency hopping comprising sequence group hopping, or sequence hopping.

32. The apparatus of claim 31, wherein the device comprises a plurality of sensors,

in the case of n=2, the frequency hopping is sequence frequency hopping;

33. The apparatus of claim 28, wherein OFDM symbols with identical relative symbol indices in the R repetitions correspond to identical first sequences in the case of R >1, n >1, the relative symbol indices corresponding to time domain positions of the OFDM symbols in each repetition.

34. The apparatus of claim 28, further comprising a receiving module;

The receiving module is configured to receive the first indication signaling from the network side device;

35. The apparatus of claim 34, wherein the first indication signaling is associated with an identity of the SRS resource if the first indication signaling is used to indicate or update a sequence identity corresponding to the SRS resource.

36. The apparatus of claim 34, wherein the first indication signaling corresponds to a set of SRS resources in which the SRS resources are located if the first indication signaling is used to indicate or update a sequence identity corresponding to the SRS resources;

37. The apparatus of claim 34, wherein, in the case where the first indication signaling is used to indicate or update a set of SRS resources, if the set of SRS resources is periodic or semi-persistent, the set of SRS resources is replaced with a set of SRS resources indicated by the first indication signaling.

38. The apparatus of claim 34, wherein in the case where the first indication signaling is used to trigger a set of aperiodic SRS resources and the SRS resources correspond to W sequence identifications, the apparatus further comprises a selection module;

the selection module is used for selecting one sequence identifier from the W sequence identifiers according to a second indication signaling, wherein the one sequence identifier is used for generating the M first sequences, and W is an integer greater than 1;

39. The apparatus of claim 38, wherein if the set of aperiodic SRS resources associates with L aperiodic SRS resource triggers, L being a positive integer, the receiving module is further configured to receive a third indication signaling from the network-side device, where the third indication signaling is used to indicate a correspondence between the L aperiodic SRS resource triggers and the W sequence identifications.

40. The apparatus of claim 38, wherein if the set of aperiodic SRS resources associates W aperiodic SRS resource triggers, the terminal and the network side device default agree that an nth aperiodic SRS resource trigger in the W aperiodic SRS resource triggers corresponds to an nth sequence identity in the W sequence identities, 1 n W.

41. The apparatus of claim 38, wherein if the set of aperiodic SRS resources is associated with 1 aperiodic SRS resource trigger, the terminal and the network side device default agree that the 1 aperiodic SRS resource trigger corresponds to a 1 st sequence identity of the W sequence identities.

42. The apparatus of claim 28, further comprising a superposition module;

and the superposition module is used for respectively superposing the scrambling sequences on the N OFDM symbols.

43. The apparatus of claim 42, wherein the scrambling sequence corresponding to one OFDM symbol is associated with at least one of:

a symbol index of the one OFDM symbol;

a sequence identifier corresponding to the SRS resource;

A sequence index corresponding to the second sequence;

the scrambling code identifier configured by the network side equipment;

and the bandwidth occupied by the SRS resources.

44. An SRS sequence indication apparatus, wherein the apparatus includes a transmission module;

the sending module is used for sending a first indication signaling to the terminal;

45. The apparatus of claim 44, wherein the first indication signaling is associated with an identity of the SRS resource if the first indication signaling is used to indicate or update a sequence identity corresponding to the SRS resource.

46. The apparatus of claim 44, wherein the first indication signaling corresponds to a set of SRS resources in which the SRS resources are located if the first indication signaling is used to indicate or update a sequence identity corresponding to the SRS resources;

47. The apparatus of claim 44, wherein if the first indication signaling is used to indicate or update a set of SRS resources, the set of SRS resources is replaced with the set of SRS resources indicated by the first indication signaling if the set of SRS resources is periodic or semi-persistent.

48. The apparatus of claim 44, wherein in the case where the first indication signaling is used to trigger a set of aperiodic SRS resources and the SRS resources correspond to W sequence identifications, the apparatus further comprises an indication module;

the indication module is configured to instruct the terminal to select one sequence identifier from the W sequence identifiers through a second indication signaling, where the one sequence identifier is used to generate the M first sequences, and W is an integer greater than 1;

49. The apparatus of claim 48, wherein if the set of aperiodic SRS resources associates with L aperiodic SRS resource triggers, L being a positive integer, the sending module is further configured to send a third indication signaling to the terminal, where the third indication signaling is configured to indicate a correspondence between the L aperiodic SRS resource triggers and the W sequence identifications.

50. The apparatus of claim 48, wherein if the set of aperiodic SRS resources associates W aperiodic SRS resource triggers, the network side device and the terminal default agree that an nth aperiodic SRS resource trigger in the W aperiodic SRS resource triggers corresponds to an nth sequence identity in the W sequence identities, 1 n W.

51. The apparatus of claim 48, wherein if the set of aperiodic SRS resources is associated with 1 aperiodic SRS resource trigger, the network side device and the terminal default agree that the 1 st one of the W sequence identifications corresponds to the 1 st one of the W aperiodic SRS resource triggers.

52. A terminal comprising a processor and a memory storing a program or instructions executable on the processor, which when executed by the processor, implement the steps of the sequence generation method of the sounding reference signal, SRS, of any one of claims 1 to 18.

53. A network side device comprising a processor and a memory storing a program or instructions executable on the processor, which when executed by the processor, implement the steps of the sequence indication method of the sounding reference signal, SRS, of any one of claims 19 to 27.

54. A readable storage medium, characterized in that a program or instructions is stored on the readable storage medium, which when executed by a processor implements the sequence generation method of a sounding reference signal SRS according to any one of claims 1-18 or the steps of the sequence indication method of an SRS according to any one of claims 19 to 27.