CN117296256A

CN117296256A - Wireless communication method, device, communication equipment and storage medium

Info

Publication number: CN117296256A
Application number: CN202280001419.1A
Authority: CN
Inventors: 罗星熠
Original assignee: Beijing Xiaomi Mobile Software Co Ltd
Current assignee: Beijing Xiaomi Mobile Software Co Ltd
Priority date: 2022-04-26
Filing date: 2022-04-26
Publication date: 2023-12-26
Also published as: WO2023206104A1

Abstract

The embodiment of the disclosure provides a wireless communication method, wherein the method is executed by access network equipment, and the method comprises the following steps: sending indication information to a terminal; wherein the indication information is used for indicating at least one of the following: aiming at comb resource structure types configured by terminals under different transmission access points TRPs, the comb resource structure types are used for determining frequency domain resources for transmitting sounding reference signals SRS; for cyclic shift parameters configured by terminals under different TPRs, the cyclic shift parameters are used for determining SRS resource sequences; the configurable cyclic shift parameters are different for different TRPs.

Description

Wireless communication method, device, communication equipment and storage medium

Technical Field

The present disclosure relates to the field of wireless communication technologies, but is not limited to the field of wireless communication technologies, and in particular, to a wireless communication method, apparatus, communication device, and storage medium.

Background

In order to improve the signal quality at the edge of the serving cell, to provide a more balanced service in the serving cell, the coordinated multipoint transmission (CoMP, coordinated Multiple Point transmission) technique is still an important technical means in a New air interface (NR) system. For a multiple Transmission Reception scenario (TRP), uncorrelated joint Transmission (NC-JT, non-Coherent Joint Transmission) and joint Transmission (C-JT, coherent Joint Transmission) may be involved. In wireless networks, many types of networks have been able to implement related joint transmissions, such as a centralized radio access network (C-RAN, centralized Radio Access Network) architecture and intra-station cooperation.

In the related art, when a plurality of TRPs are subjected to correlated joint transmission, interference between sounding reference signals (SRS, sounding Reference Signal) for channel estimation between different TRPs is serious, and reliability of wireless communication is low.

Disclosure of Invention

The embodiment of the disclosure discloses a wireless communication method, a wireless communication device and a wireless communication storage medium.

According to a first aspect of embodiments of the present disclosure, there is provided a wireless communication method, wherein the method is performed by an access network device, the method comprising:

sending indication information to a terminal;

wherein the indication information is used for indicating at least one of the following:

comb-shaped resource structure types configured for terminals under different transmission access points TRPs are used for determining frequency domain resources for transmitting sounding reference signals SRS;

a cyclic shift parameter configured for a terminal under different TPRs, the cyclic shift parameter being used to determine an SRS resource sequence; the cyclic shift parameters configurable under different TRPs are different.

In one embodiment, the comb structure type includes one of:

a second type comb structure comb-2;

comb-3 of a third type;

A fourth type comb structure comb-4;

comb structures comb-6 of the sixth type.

In one embodiment, the cyclic shift parameter comprises a maximum cyclic shift value and/or a cyclic shift initial value.

In one embodiment, the SRS resource sequences of the different TRPs determined based on the cyclic shift parameter are mutually orthogonal.

In one embodiment, the indication information further includes an indication of at least one of:

a base sequence;

comb offset values.

According to a second aspect of embodiments of the present disclosure, there is provided a wireless communication method, wherein the method is performed by a terminal, the method comprising:

receiving indication information sent by access network equipment;

In one embodiment, the comb structure type includes one of:

A second type comb structure comb-2;

comb-3 of a third type;

a second type comb structure comb-4;

comb structures comb-6 of the sixth type.

In one embodiment, SRS resource sequences of different of the TRPs determined based on the cyclic shift parameter are mutually orthogonal.

a base sequence;

comb offset values.

According to a third aspect of embodiments of the present disclosure, there is provided a wireless communication apparatus, wherein the apparatus comprises:

the sending module is configured to send indication information to the terminal;

According to a fourth aspect of embodiments of the present disclosure, there is provided a wireless communication apparatus, the apparatus comprising:

the receiving module is configured to receive indication information sent by the access network equipment;

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

a processor;

a memory for storing the processor-executable instructions;

wherein the processor is configured to: for executing the executable instructions, implementing the methods described in any of the embodiments of the present disclosure.

According to a sixth aspect of embodiments of the present disclosure, there is provided a computer storage medium storing a computer executable program which, when executed by a processor, implements the method of any embodiment of the present disclosure.

In the embodiment of the disclosure, indication information is sent to a terminal; wherein the indication information is used for indicating at least one of the following: comb-shaped resource structure types configured for terminals under different transmission access points TRPs are used for determining frequency domain resources for transmitting sounding reference signals SRS; a cyclic shift parameter configured for a terminal under different TPRs, the cyclic shift parameter being used to determine an SRS resource sequence; the cyclic shift parameters configurable under different TRPs are different. Here, since the comb resource structure types configured for the terminals under the different transmission access points TRP are configured respectively, the frequency domain resources of the SRS determined based on the comb resource structure types configured for the terminals under the different transmission access points TRP may be different, and/or since the cyclic shift parameters configured for the terminals under the different TRP are different, the SRS resource sequences determined based on the cyclic shift parameters configured for the terminals under the different TRP may be orthogonal, compared with the manner of uniformly configuring the comb resource structure types and/or the cyclic shift parameters for the terminals, it may be ensured that the users under the two TRPs allocate different resources to reduce the interference between the SRS, and improve the reliability of wireless communication.

Drawings

Fig. 1 is a schematic diagram illustrating a structure of a wireless communication system according to an exemplary embodiment.

Fig. 2 is a schematic diagram illustrating a scenario of federated communication, according to an example embodiment.

Fig. 3 is a diagram illustrating a bandwidth distribution according to an example embodiment.

Fig. 4 is a diagram illustrating a comb-like resource distribution according to an example embodiment.

Fig. 5 is a flow chart illustrating a method of wireless communication according to an exemplary embodiment.

Fig. 6 is a flow chart illustrating a method of wireless communication according to an example embodiment.

Fig. 7 is a flow chart illustrating a method of wireless communication according to an exemplary embodiment.

Fig. 8 is a flow chart illustrating a method of wireless communication according to an exemplary embodiment.

Fig. 9 is a flow chart illustrating a method of wireless communication according to an exemplary embodiment.

Fig. 10 is a flow chart illustrating a method of wireless communication according to an exemplary embodiment.

Fig. 11 is a flow chart illustrating a method of wireless communication according to an exemplary embodiment.

Fig. 12 is a flow chart illustrating a method of wireless communication according to an exemplary embodiment.

Fig. 13 is a flow chart illustrating a method of wireless communication according to an exemplary embodiment.

Fig. 14 is a flow chart illustrating a method of wireless communication according to an exemplary embodiment.

Fig. 15 is a schematic diagram illustrating a structure of a wireless communication apparatus according to an exemplary embodiment.

Fig. 16 is a schematic diagram illustrating a structure of a wireless communication device according to an exemplary embodiment.

Fig. 17 is a schematic diagram showing a structure of a terminal according to an exemplary embodiment.

Fig. 18 is a block diagram of a base station, according to an example embodiment.

Detailed Description

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

The terminology used in the embodiments of the disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the embodiments of the disclosure. As used in this disclosure of embodiments and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any or all possible combinations of one or more of the associated listed items.

It should be understood that although the terms first, second, third, etc. may be used in embodiments of the present disclosure to describe various information, these information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, the first information may also be referred to as second information, and similarly, the second information may also be referred to as first information, without departing from the scope of embodiments of the present disclosure. The word "if" as used herein may be interpreted as "at … …" or "at … …" or "responsive to a determination", depending on the context.

For purposes of brevity and ease of understanding, the terms "greater than" or "less than" are used herein in characterizing a size relationship. But it will be appreciated by those skilled in the art that: the term "greater than" also encompasses the meaning of "greater than or equal to," less than "also encompasses the meaning of" less than or equal to.

Referring to fig. 1, a schematic structural diagram of a wireless communication system according to an embodiment of the disclosure is shown. As shown in fig. 1, the wireless communication system is a communication system based on a mobile communication technology, and may include: a number of user equipments 110 and a number of base stations 120.

User device 110 may be, among other things, a device that provides voice and/or data connectivity to a user. The user equipment 110 may communicate with one or more core networks via a radio access network (Radio Access Network, RAN), and the user equipment 110 may be an internet of things user equipment such as sensor devices, mobile phones and computers with internet of things user equipment, for example, stationary, portable, pocket, hand-held, computer-built-in or vehicle-mounted devices. Such as a Station (STA), subscriber unit (subscriber unit), subscriber Station (subscriber Station), mobile Station (mobile), remote Station (remote Station), access point, remote user equipment (remote terminal), access user equipment (access terminal), user device (user terminal), user agent (user agent), user device (user device), or user equipment (user request). Alternatively, the user device 110 may be a device of an unmanned aerial vehicle. Alternatively, the user device 110 may be a vehicle-mounted device, for example, a laptop with a wireless communication function, or a wireless user device with an external laptop. Alternatively, the user device 110 may be a roadside device, for example, a street lamp, a signal lamp, or other roadside devices with a wireless communication function.

The base station 120 may be a network-side device in a wireless communication system. Wherein the wireless communication system may be a fourth generation mobile communication technology (the 4th generation mobile communication,4G) system, also known as a long term evolution (Long Term Evolution, LTE) system; alternatively, the wireless communication system may be a 5G system, also known as a new air interface system or a 5G NR system. Alternatively, the wireless communication system may be a next generation system of the 5G system. Among them, the access network in the 5G system may be called NG-RAN (New Generation-Radio Access Network, new Generation radio access network).

The base station 120 may be an evolved node b (eNB) employed in a 4G system. Alternatively, the base station 120 may be a base station (gNB) in a 5G system that employs a centralized and distributed architecture. When the base station 120 adopts a centralized and distributed architecture, it generally includes a Centralized Unit (CU) and at least two Distributed Units (DUs). A protocol stack of a packet data convergence protocol (Packet Data Convergence Protocol, PDCP) layer, a radio link layer control protocol (Radio Link Control, RLC) layer, and a medium access control (Media Access Control, MAC) layer is provided in the centralized unit; a Physical (PHY) layer protocol stack is provided in the distribution unit, and the specific implementation of the base station 120 is not limited in the embodiments of the present disclosure.

A wireless connection may be established between the base station 120 and the user equipment 110 over a wireless air interface. In various embodiments, the wireless air interface is a fourth generation mobile communication network technology (4G) standard-based wireless air interface; or, the wireless air interface is a wireless air interface based on a fifth generation mobile communication network technology (5G) standard, for example, the wireless air interface is a new air interface; alternatively, the wireless air interface may be a wireless air interface based on a 5G-based technology standard of a next generation mobile communication network.

In some embodiments, an E2E (End to End) connection may also be established between the user devices 110. Such as V2V (vehicle to vehicle, vehicle-to-vehicle) communications, V2I (vehicle to Infrastructure, vehicle-to-road side equipment) communications, and V2P (vehicle to pedestrian, vehicle-to-person) communications among internet of vehicles communications (vehicle to everything, V2X).

Here, the above-described user equipment can be regarded as the terminal equipment of the following embodiment.

In some embodiments, the wireless communication system described above may also include a network management device 130.

Several base stations 120 are respectively connected to a network management device 130. The network management device 130 may be a core network device in a wireless communication system, for example, the network management device 130 may be a mobility management entity (Mobility Management Entity, MME) in an evolved packet core network (Evolved Packet Core, EPC). Alternatively, the network management device may be other core network devices, such as a Serving GateWay (SGW), a public data network GateWay (Public Data Network GateWay, PGW), a policy and charging rules function (Policy and Charging Rules Function, PCRF) or a home subscriber server (Home Subscriber Server, HSS), etc. The embodiment of the present disclosure is not limited to the implementation form of the network management device 130.

For ease of understanding by those skilled in the art, the embodiments of the present disclosure enumerate a plurality of implementations to clearly illustrate the technical solutions of the embodiments of the present disclosure. Of course, those skilled in the art will appreciate that the various embodiments provided in the embodiments of the disclosure may be implemented separately, may be implemented in combination with the methods of other embodiments of the disclosure, and may be implemented separately or in combination with some methods of other related technologies; the embodiments of the present disclosure are not so limited.

In order to better understand the technical solution described in any embodiment of the present disclosure, first, an application scenario in the related art is described:

in one embodiment, the problem of interference of SRS for channel estimation between different TRPs is more serious for the case of correlated joint transmission of multiple TRPs. Referring to fig. 2, in order to estimate the channel of joint transmission, TRP1 needs to receive SRS (SRS 1) of user 1 (UE 1), and the SRS of user 2 located closer to TRP2 becomes interference. How to cancel SRS interference between TRPs is a problem to be solved. Note that TRP1 may be a TRP corresponding to the associated Cell (Coordination Cell) in fig. 2, and TRP2 may be a TRP corresponding to the Serving Cell (Serving Cell).

In one embodiment, the configuration of the SRS includes a time domain location configuration and a frequency domain location configuration. The time domain position configuration parameters comprise: start symbol position (Starting symbol location l) ₀ ) Duration (Time duration)) And a period and slot offset (Periodicity and slot offset), etc. The parameters of the frequency domain location configuration include: the detection bandwidth (Sounding bandwidth) and the transmission comb spacing and comb offset (Transmission comb spacing and comb offset), etc. Referring to FIG. 3, a maximum probe Bandwidth (Maximum Sounding Bandwidth) and actual probe band in a Bandwidth Part (BWP) are shownWide (Actual Sounding Bandwidth). Referring to fig. 4, the transmission comb spacing (1, 3, and 3, respectively) and comb structure offset (0, 1, 0, and 1, respectively) are shown.

The acquisition of the phase rotation or cyclic shift may be based on the following formula:

wherein,as configured by the network,port number, p, of SRS resource for user _i Is the SRS port number.

As shown in fig. 5, in this embodiment, there is provided a wireless communication method, where the method is performed by an access network device, the method includes:

step 51, sending indication information to a terminal;

Aiming at comb resource structure types configured by terminals under different transmission access points TRPs, the comb resource structure types are used for determining frequency domain resources of transmission sounding reference signals SRS within a sounding bandwidth;

for cyclic shift parameters configured by terminals under different TPRs, the cyclic shift parameters are used for determining SRS resource sequences; the configurable cyclic shift parameters are different for different TRPs.

Here, the terminal related to the present disclosure may be, but is not limited to, a mobile phone, a wearable device, a vehicle-mounted terminal, a Road Side Unit (RSU), a smart home terminal, an industrial sensing device, and/or a medical device, etc. In some embodiments, the terminal may be a Redcap terminal or a predetermined version of a new air-interface NR terminal (e.g., an NR terminal of R17).

The access network devices referred to in this disclosure may be various types of base stations, for example, base stations of third generation mobile communication (3G) networks, base stations of fourth generation mobile communication (4G) networks, base stations of fifth generation mobile communication (5G) networks, or other evolved base stations.

It should be noted that TRP may be understood as a base station, but in some scenarios, a cell may not be covered by one TRP, but may be covered by a combination of multiple TRPs, so that the coverage radius of the cell is increased, and the terminal may be reduced from continuously switching on the cell.

In one embodiment, the indication information may be sent to the terminal through an RRC message, where the indication information is used to indicate at least one of: aiming at comb resource structure types configured by terminals under different transmission access points TRPs, the comb resource structure types are used for determining frequency domain resources of transmission sounding reference signals SRS within a sounding bandwidth; for cyclic shift parameters configured by terminals under different TPRs, the cyclic shift parameters are used for determining SRS resource sequences; the configurable cyclic shift parameters are different for different TRPs.

In one embodiment, an access network device sends indication information to a terminal; wherein the indication information is used for indicating at least one of the following: aiming at comb resource structure types configured by terminals under different transmission access points TRPs, the comb resource structure types are used for determining frequency domain resources of transmission sounding reference signals SRS within a sounding bandwidth; for cyclic shift parameters configured by terminals under different TPRs, the cyclic shift parameters are used for determining SRS resource sequences; the configurable cyclic shift parameters are different for different TRPs. After receiving the indication information, the terminal can transmit the SRS based on the comb resource structure type indicated by the indication information and the cyclic shift parameter. For example, the SRS may be transmitted according to an SRS resource sequence determined based on the frequency domain resource determined based on the comb resource structure type and the cyclic shift parameter.

In one embodiment, the comb structure type includes one of the following:

a second type comb structure comb-2;

comb-3 of a third type;

a fourth type comb structure comb-4;

comb structures comb-6 of the sixth type.

It should be noted that the comb structure type may be, but is not limited to, the above-mentioned comb structure type. Different comb structure types can be configured for terminals under different TRPs. Of course, the same comb structure type may be configured for terminals under different TRPs.

It should be noted that the cyclic shift parameter may not include the maximum cyclic shift value. For example, after receiving the indication information, the terminal may directly determine the maximum cyclic shift value based on the comb structure type indicated by the indication information and the mapping relationship between the comb structure type and the maximum cyclic shift value. In this way, the terminal can determine the maximum cyclic shift value whenever the comb structure type is determined, which essentially indicates the maximum cyclic shift value in a implicit manner. Of course, the maximum cyclic shift value may also be indicated by means of an explicit indication, i.e. the maximum cyclic shift value is directly included in the indication information sent by the access network device to the terminal.

In one embodiment, indication information is sent to a terminal; wherein, the instruction information is used for indicating: for cyclic shift parameters configured by terminals under different TPRs, the cyclic shift parameters are used for determining SRS resource sequences; the configurable cyclic shift parameters are different for different TRPs. The SRS resource sequences of different TRPs determined based on the cyclic shift parameter are orthogonal to each other. Illustratively, SRS resource sequences of different TRPs determined by terminals under different TRPs based on the same base sequence and cyclic shift parameters are mutually orthogonal.

In one embodiment, the indication information further includes an indication of at least one of: a base sequence; comb offset values. The indication information may not directly carry the base sequence, and may indicate the base sequence by the indication identifier. Illustratively, the base sequence is divided into a plurality of packets, each packet containing a plurality of base sequences, and then the packet in which the base sequence is located may be indicated by the identification "x" and the sequence number within the packet in which the base sequence is located may be indicated by the identification "y". In this way, the indication information can directly carry the identifier "x" and the identifier "y", and the indication is performed by the implicit indication mode. Of course, the base sequence may be directly carried in the indication information, and the indication may be performed by an explicit indication method.

In one embodiment, indication information is sent to a terminal; wherein the indication information is used for indicating at least one of the following: information indicating that the SRS frequency domain resource is comb-2 comb structure and information of a corresponding maximum number Dmax of cyclic shifts, wherein Dmax is 12 or 24. It should be noted that, in the embodiment of the present disclosure, the user SRS port p _i The sequence cyclic shift value alpha of SRS of (2) _i Is determined by the following formula, wherein d ₀ As configured by the network,the port number configured for the SRS resource of the user;

in the embodiment of the disclosure, d of the network configuration is configured according to the formula ₀ The values of (2) may be: when Dmax is configured to 12, a cyclic shift initial value d of a user (or terminal) under TRP1 ₀ Configurable as {0,2,4,6,8,10}; under TRP2Initial value d of cyclic shift of user ₀ Configurable as {1,3,5,7,9,11}; alternatively, when Damx is 24, the cyclic shift initial value d of the user (or terminal) under TRP1 ₀ Configurable as {0,2,4,6,8,10, …,22}; initial value d of cyclic shift of user under TRP2 ₀ May be configured as {1,3,5,7,9,11, …,23}.

In another embodiment, d of the network configuration ₀ The values of (2) may be: when Dmax is configured to 12, a cyclic shift initial value d of a user (or terminal) under TRP1 ₀ Configurable as {0,1,2, …,5}; initial value d of cyclic shift of user under TRP2 ₀ Configurable as {0,1,2, …,11}; alternatively, when Damx is 24, the cyclic shift initial value d of the user (or terminal) under TRP1 ₀ Configurable as {0,1,2, …,5}; initial value d of cyclic shift of user under TRP2 ₀ May be configured as {0,1,2, …,11}. And user SRS port p _i The sequence cyclic shift value alpha of SRS of (2) _i Determined as follows:

in one scenario embodiment, terminals under different TRPs choose the same base sequence. Through the above processing, the user selectable cyclic shifts under two different TRPs (TRP 1 and TRP 2) are different, and even if the same base sequence (root sequence) is selected, the cyclic shift values of the sequences are different, so that the sequences will not interfere with each other. Because the inner product between two users isWherein |alpha _i -α _k The possible values of I areOr alternativelySince the frequency domain resource of SRS is necessarily a multiple of 4 PRBs, for the case of comb-2, N in the inner product formula is necessarily a multiple of 12 or 24, and the inner product is always 0, the SRS resource sequences of the terminals under different TRPs are orthogonal to each other, so that the SRS transmitted by the terminals under different TRPs will not interfere with each other.

In one scenario embodiment, the base sequences selected for terminals under different TRPs are not identical. Thus, due to the base sequence difference, the SRS sequence correlation between users of two TRPs is low and the interference is also small.

In one embodiment, indication information is sent to a terminal; wherein, the instruction information is used for indicating: information indicating that the SRS frequency domain resource is comb-3 comb structure and information of a corresponding maximum number Dmax of cyclic shifts (corresponding to a maximum cyclic shift value). For example, referring to fig. 6, resource mapping may be performed in the manner shown in fig. 6, where the comb structure comb may be configured with an offset value of {0,1,2}. Maximum number of cyclic shifts D _max 8 or 16. D of network configuration ₀ The values of (2) may be: user selectable d under TRP1 ₀ Is {0,2,4,6}, or {0,2,4,6,8,10, …,14}; user selectable d under TRP2 ₀ Is {1,3,5,7} or {1,3,4,7,9, …,15}.

In one embodiment, indication information is sent to a terminal; wherein, the instruction information is used for indicating: information indicating that the SRS frequency domain resource is comb-6 comb structure and information of a corresponding maximum number Dmax of cyclic shifts (corresponding to a maximum cyclic shift value). For example, referring to FIG. 7, resource mapping may be performed in the manner shown in FIG. 7, wherein the offset value of the configurable comb is {0,1,2,3,4,5}. Maximum number of available cyclic shifts D _max 8. D of network configuration ₀ Is a value of (1): user selectable d under TRP1 ₀ User selectable cyclic shift d under TRP2 for {0,2,4,6} ₀ {1,3,5,7}.

In the embodiment of the disclosure, indication information is sent to a terminal; wherein the indication information is used for indicating at least one of the following: aiming at comb resource structure types configured by terminals under different transmission access points TRPs, the comb resource structure types are used for determining frequency domain resources for transmitting sounding reference signals SRS; for cyclic shift parameters configured by terminals under different TPRs, the cyclic shift parameters are used for determining SRS resource sequences; the configurable cyclic shift parameters are different for different TRPs. Here, since the comb resource structure types configured for the terminals under the different transmission access points TRP are respectively configured, the frequency domain resources of the SRS determined based on the comb resource structure types configured for the terminals under the different transmission access points TRP may be different, and/or since the cyclic shift parameters configured for the terminals under the different TRP are different, the SRS resource sequences determined based on the cyclic shift parameters configured for the terminals under the different TRP may be orthogonal, compared with the manner of uniformly configuring the comb resource structure types and/or the cyclic shift parameters for the terminals, it may be ensured that the users under the two TRPs allocate different resources to reduce the interference between the SRS, and improve the reliability of wireless communication.

It should be noted that, as those skilled in the art may understand, the methods provided in the embodiments of the present disclosure may be performed alone or together with some methods in the embodiments of the present disclosure or some methods in the related art.

As shown in fig. 8, in this embodiment, there is provided a wireless communication method, where the method is performed by an access network device, the method includes:

step 81, sending indication information to a terminal; wherein the indication information is used for indicating at least one of the following: aiming at comb resource structure types configured by terminals under different transmission access points TRPs, the comb resource structure types are used for determining frequency domain resources for transmitting sounding reference signals SRS; for cyclic shift parameters configured by terminals under different TPRs, the cyclic shift parameters are used for determining SRS resource sequences; the configurable cyclic shift parameters are different under different TRPs; the comb structure type includes one of the following: a second type comb structure comb-2; comb-3 of a third type; a fourth type comb structure comb-4; comb structures comb-6 of the sixth type.

It should be noted that, when the number of terminals under TRP is greater than the number threshold, the comb structure type indicated by the indication information may be a; when the number of terminals under TRP is smaller than the number threshold, the comb structure type indicated by the indication information may be B, where the resource distribution density of a is smaller than that of B. As such, the comb structure type may be adapted to the number of terminals under TRP. Illustratively, when the number of terminals under the TRP is greater than the number threshold, the comb structure type indicated by the indication information may be comb3; when the number of terminals under the TRP is smaller than the number threshold, the comb structure type indicated by the indication information may be comb2. It should be noted that, as those skilled in the art may understand, the methods provided in the embodiments of the present disclosure may be performed alone or together with some methods in the embodiments of the present disclosure or some methods in the related art.

As shown in fig. 9, in this embodiment, there is provided a wireless communication method, where the method is performed by an access network device, the method includes:

step 91, sending indication information to a terminal; wherein the indication information is used for indicating at least one of the following: aiming at comb resource structure types configured by terminals under different transmission access points TRPs, the comb resource structure types are used for determining frequency domain resources for transmitting sounding reference signals SRS; for cyclic shift parameters configured by terminals under different TPRs, the cyclic shift parameters are used for determining SRS resource sequences; the configurable cyclic shift parameters are different under different TRPs; the cyclic shift parameter includes a maximum cyclic shift value and/or a cyclic shift initial value.

In one embodiment, the cyclic shift parameter may not contain a maximum cyclic shift value. For example, after receiving the indication information, the terminal may directly determine the maximum cyclic shift value based on the comb structure type indicated by the indication information and the mapping relationship between the comb structure type and the maximum cyclic shift value. In this way, the terminal can determine the maximum cyclic shift value whenever the comb structure type is determined, which essentially indicates the maximum cyclic shift value in a implicit manner. Of course, the maximum cyclic shift value may also be indicated by means of an explicit indication, i.e. the maximum cyclic shift value is directly included in the indication information sent by the access network device to the terminal.

For other descriptions of the step 91, please refer to the description of the step 51, and the description is omitted herein.

As shown in fig. 10, in this embodiment, there is provided a wireless communication method, where the method is performed by an access network device, the method includes:

Step 101, sending indication information to a terminal; wherein the indication information is used for indicating at least one of the following: aiming at comb resource structure types configured by terminals under different transmission access points TRPs, the comb resource structure types are used for determining frequency domain resources for transmitting sounding reference signals SRS; for cyclic shift parameters configured by terminals under different TPRs, the cyclic shift parameters are used for determining SRS resource sequences; the configurable cyclic shift parameters are different under different TRPs; SRS resource sequences of different TRPs determined based on the cyclic shift parameter are mutually orthogonal.

As shown in fig. 11, in this embodiment, there is provided a wireless communication method, wherein the method is performed by a terminal, the method including:

step 111, receiving indication information sent by access network equipment;

aiming at comb resource structure types configured by terminals under different transmission access points TRPs, the comb resource structure types are used for determining frequency domain resources in a detection bandwidth for transmitting a detection reference signal SRS;

In one embodiment, the indication information broadcasted by the access network device may be received through a system message, where the indication information is used to indicate at least one of the following: aiming at comb resource structure types configured by terminals under different transmission access points TRPs, the comb resource structure types are used for determining frequency domain resources of transmission sounding reference signals SRS within a sounding bandwidth; for cyclic shift parameters configured by terminals under different TPRs, the cyclic shift parameters are used for determining SRS resource sequences; the configurable cyclic shift parameters are different for different TRPs.

In one embodiment, the indication information sent by the access network device may be received through an RRC message, where the indication information is used to indicate at least one of the following: aiming at comb resource structure types configured by terminals under different transmission access points TRPs, the comb resource structure types are used for determining frequency domain resources of transmission sounding reference signals SRS within a sounding bandwidth; for cyclic shift parameters configured by terminals under different TPRs, the cyclic shift parameters are used for determining SRS resource sequences; the configurable cyclic shift parameters are different for different TRPs.

In one embodiment, receiving indication information sent by access network equipment; wherein the indication information is used for indicating at least one of the following: aiming at comb resource structure types configured by terminals under different transmission access points TRPs, the comb resource structure types are used for determining frequency domain resources of transmission sounding reference signals SRS within a sounding bandwidth; for cyclic shift parameters configured by terminals under different TPRs, the cyclic shift parameters are used for determining SRS resource sequences; the configurable cyclic shift parameters are different for different TRPs. After receiving the indication information, the terminal can transmit the SRS based on the comb resource structure type indicated by the indication information and the cyclic shift parameter. For example, the terminal may transmit SRS according to an SRS resource sequence determined based on the frequency domain resource determined based on the comb resource structure type and the cyclic shift parameter.

In one embodiment, the comb structure type includes one of the following:

a second type comb structure comb-2;

comb-3 of a third type;

a fourth type comb structure comb-4;

comb structures comb-6 of the sixth type.

In one embodiment, receiving indication information sent by an access network; wherein, the instruction information is used for indicating: for cyclic shift parameters configured by terminals under different TPRs, the cyclic shift parameters are used for determining SRS resource sequences; the configurable cyclic shift parameters are different for different TRPs. The SRS resource sequences of different TRPs determined based on the cyclic shift parameter are orthogonal to each other. Illustratively, SRS resource sequences of different TRPs determined by terminals under different TRPs based on the same base sequence and cyclic shift parameters are mutually orthogonal.

In one embodiment, receiving indication information sent by access network equipment; wherein the indication information is used for indicating at least one of the following: information indicating that the SRS frequency domain resource is comb-2 comb structure and information of a corresponding maximum number Dmax of cyclic shifts, wherein Dmax is 12 or 24. It should be noted that, in the embodiment of the present disclosure, the user SRS port p _i The sequence cyclic shift value alpha of SRS of (2) _i Is determined by the following formula, wherein d ₀ As configured by the network,the port number configured for the SRS resource of the user;

in the embodiment of the disclosure, d of the network configuration is configured according to the formula ₀ The values of (2) may be: when Dmax is configured to 12, a cyclic shift initial value d of a user (or terminal) under TRP1 ₀ Configurable as {0,2,4,6,8,10}; initial value d of cyclic shift of user under TRP2 ₀ Configurable as {1,3,5,7,9,11}; alternatively, when Damx is 24, the cyclic shift initial value d of the user (or terminal) under TRP1 ₀ May be configured as {0,2,4,6,8,10, …,22}; initial value d of cyclic shift of user under TRP2 ₀ Configurable (or configurable){1,3,5,7,9,11, …,23}.

In one scenario embodiment, terminals under different TRPs choose the same base sequence. Through the above processing, the user selectable cyclic shifts under two different TRPs (TRP 1 and TRP 2) are different, and even if the same base sequence (root sequence) is selected, the cyclic shift values of the sequences are different, so that the sequences will not interfere with each other. Because the inner product between two users isWherein |alpha _i -α _k The possible values of I areOr alternativelyBecause the frequency domain resource of SRS is necessarily a multiple of 4PRB, for comb-2, N is necessarily a multiple of 12 or 24 in the inner product formula, the inner product is always 0, which is differentThe SRS resource sequences of terminals under TRP are orthogonal to each other, so that SRS transmitted by terminals under different TRP will not interfere with each other.

In one embodiment, receiving indication information sent by access network equipment; wherein, the instruction information is used for indicating: information indicating that the SRS frequency domain resource is comb-3 comb structure and information of a corresponding maximum number Dmax of cyclic shifts (corresponding to a maximum cyclic shift value). For example, referring again to fig. 6, resource mapping may be performed in the manner shown in fig. 6, wherein the comb structure comb may be configured with an offset value of {0,1,2}. Maximum number of cyclic shifts D _max 8 or 16. D of network configuration ₀ The values of (2) may be: user selectable d under TRP1 ₀ Is {0,2,4,6}, or {0,2,4,6,8,10, …,14}; user selectable d under TRP2 ₀ Is {1,3,5,7} or {1,3,4,7,9, …,15}.

In one embodiment, receiving indication information sent by access network equipment; wherein, the instruction information is used for indicating: information indicating that the SRS frequency domain resource is comb-6 comb structure and information of a corresponding maximum number Dmax of cyclic shifts (corresponding to a maximum cyclic shift value). For example, referring again to FIG. 7, resource mapping may be performed in the manner shown in FIG. 7, wherein the offset value of the configurable comb is {0,1,2,3,4,5}. Maximum number of available cyclic shifts D _max 8. D of network configuration ₀ Is a value of (1): user selectable d under TRP1 ₀ User selectable cyclic shift d under TRP2 for {0,2,4,6} ₀ {1,3,5,7}.

As shown in fig. 12, in this embodiment, there is provided a wireless communication method, wherein the method is performed by a terminal, the method including:

Step 121, receiving indication information sent by access network equipment; wherein the indication information is used for indicating at least one of the following: aiming at comb resource structure types configured by terminals under different transmission access points TRPs, the comb resource structure types are used for determining frequency domain resources for transmitting sounding reference signals SRS; for cyclic shift parameters configured by terminals under different TPRs, the cyclic shift parameters are used for determining SRS resource sequences; the configurable cyclic shift parameters are different under different TRPs; the comb structure type includes one of the following: a second type comb structure comb-2; comb-3 of a third type; a fourth type comb structure comb-4; comb structures comb-6 of the sixth type.

It should be noted that, when the number of terminals under TRP is greater than the number threshold, the comb structure type indicated by the indication information may be a; when the number of terminals under TRP is smaller than the number threshold, the comb structure type indicated by the indication information may be B, where the resource distribution density of a is smaller than that of B. As such, the comb structure type may be adapted to the number of terminals under TRP. Illustratively, when the number of terminals under the TRP is greater than the number threshold, the comb structure type indicated by the indication information may be comb3; when the number of terminals under the TRP is smaller than the number threshold, the comb structure type indicated by the indication information may be comb2.

As shown in fig. 13, in this embodiment, there is provided a wireless communication method, wherein the method is performed by a terminal, the method including:

step 131, receiving indication information sent by access network equipment; wherein the indication information is used for indicating at least one of the following: aiming at comb resource structure types configured by terminals under different transmission access points TRPs, the comb resource structure types are used for determining frequency domain resources for transmitting sounding reference signals SRS; for cyclic shift parameters configured by terminals under different TPRs, the cyclic shift parameters are used for determining SRS resource sequences; the configurable cyclic shift parameters are different under different TRPs; the cyclic shift parameter includes a maximum cyclic shift value and/or a cyclic shift initial value.

For other descriptions of the step 131, please refer to the description of the step 101, and the description is omitted herein.

As shown in fig. 14, in this embodiment, there is provided a wireless communication method, wherein the method is performed by a terminal, the method including:

step 141, receiving indication information sent by access network equipment; wherein the indication information is used for indicating at least one of the following: aiming at comb resource structure types configured by terminals under different transmission access points TRPs, the comb resource structure types are used for determining frequency domain resources for transmitting sounding reference signals SRS; for cyclic shift parameters configured by terminals under different TPRs, the cyclic shift parameters are used for determining SRS resource sequences; the configurable cyclic shift parameters are different under different TRPs; SRS resource sequences of different TRPs determined based on the cyclic shift parameter are mutually orthogonal.

In one embodiment, receiving indication information sent by access network equipment; wherein, the instruction information is used for indicating: for cyclic shift parameters configured by terminals under different TPRs, the cyclic shift parameters are used for determining SRS resource sequences; the configurable cyclic shift parameters are different for different TRPs. The SRS resource sequences of different TRPs determined based on the cyclic shift parameter are orthogonal to each other. Illustratively, SRS resource sequences of different TRPs determined by terminals under different TRPs based on the same base sequence and cyclic shift parameters are mutually orthogonal.

For other descriptions of step 141, please refer to the description of step 101, and the description is omitted herein.

As shown in fig. 15, in this embodiment, there is provided a wireless communication apparatus, wherein the apparatus includes:

a transmitting module 151 configured to transmit indication information to a terminal;

As shown in fig. 16, in this embodiment, there is provided a wireless communication apparatus including:

a receiving module 161, configured to receive indication information sent by the access network device;

The embodiment of the disclosure provides a communication device, which comprises:

a processor;

a memory for storing processor-executable instructions;

wherein the processor is configured to: for executing executable instructions, implements a method that is applicable to any of the embodiments of the present disclosure.

The processor may include, among other things, various types of storage media, which are non-transitory computer storage media capable of continuing to memorize information stored thereon after a power down of the communication device.

The processor may be coupled to the memory via a bus or the like for reading the executable program stored on the memory.

The embodiments of the present disclosure also provide a computer storage medium, where the computer storage medium stores a computer executable program that when executed by a processor implements the method of any of the embodiments of the present disclosure.

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

As shown in fig. 17, one embodiment of the present disclosure provides a structure of a terminal.

Referring to the terminal 800 shown in fig. 17, the present embodiment provides a terminal 800, which may be embodied as a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, or the like.

Referring to fig. 17, a terminal 800 may include one or more of the following components: a processing component 802, a memory 804, a power component 806, a multimedia component 808, an audio component 810, an input/output (I/O) interface 812, a sensor component 814, and a communication component 816.

The processing component 802 generally controls overall operation of the terminal 800, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processing component 802 may include one or more processors 820 to execute instructions to perform all or part of the steps of the methods described above. Further, the processing component 802 can include one or more modules that facilitate interactions between the processing component 802 and other components. For example, the processing component 802 can include a multimedia module to facilitate interaction between the multimedia component 808 and the processing component 802.

The memory 804 is configured to store various types of data to support operations at the device 800. Examples of such data include instructions for any application or method operating on the terminal 800, contact data, phonebook data, messages, pictures, videos, and the like. The memory 804 may be implemented by any type or combination of volatile or nonvolatile memory devices such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disk.

The power supply component 806 provides power to the various components of the terminal 800. The power components 806 may include a power management system, one or more power sources, and other components associated with generating, managing, and distributing power for the terminal 800.

The multimedia component 808 includes a screen between the terminal 800 and the user that provides an output interface. In some embodiments, the screen may include a Liquid Crystal Display (LCD) and a Touch Panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive input signals from a user. The touch panel includes one or more touch sensors to sense touches, swipes, and gestures on the touch panel. The touch sensor may sense not only the boundary of a touch or sliding action, but also the duration and pressure associated with the touch or sliding operation. In some embodiments, the multimedia component 808 includes a front camera and/or a rear camera. The front camera and/or the rear camera may receive external multimedia data when the device 800 is in an operational mode, such as a shooting mode or a video mode. Each front camera and rear camera may be a fixed optical lens system or have focal length and optical zoom capabilities.

The audio component 810 is configured to output and/or input audio signals. For example, the audio component 810 includes a Microphone (MIC) configured to receive external audio signals when the terminal 800 is in an operation mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signals may be further stored in the memory 804 or transmitted via the communication component 816. In some embodiments, audio component 810 further includes a speaker for outputting audio signals.

The I/O interface 812 provides an interface between the processing component 802 and peripheral interface modules, which may be a keyboard, click wheel, buttons, etc. These buttons may include, but are not limited to: homepage button, volume button, start button, and lock button.

The sensor assembly 814 includes one or more sensors for providing status assessment of various aspects of the terminal 800. For example, the sensor assembly 814 may detect an on/off state of the device 800, a relative positioning of the assemblies, such as a display and keypad of the terminal 800, the sensor assembly 814 may also detect a change in position of the terminal 800 or a component of the terminal 800, the presence or absence of user contact with the terminal 800, an orientation or acceleration/deceleration of the terminal 800, and a change in temperature of the terminal 800. The sensor assembly 814 may include a proximity sensor configured to detect the presence of nearby objects without any physical contact. The sensor assembly 814 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 814 may also include an acceleration sensor, a gyroscopic sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

The communication component 816 is configured to facilitate communication between the terminal 800 and other devices, either wired or wireless. The terminal 800 may access a wireless network based on a communication standard, such as Wi-Fi,2G, or 3G, or a combination thereof. In one exemplary embodiment, the communication component 816 receives broadcast signals or broadcast related information from an external broadcast management system via a broadcast channel. In one exemplary embodiment, the communication component 816 further includes a Near Field Communication (NFC) module to facilitate short range communications. For example, the NFC module may be implemented based on Radio Frequency Identification (RFID) technology, infrared data association (IrDA) technology, ultra Wideband (UWB) technology, bluetooth (BT) technology, and other technologies.

In an exemplary embodiment, the terminal 800 can be implemented by one or more Application Specific Integrated Circuits (ASICs), digital Signal Processors (DSPs), digital Signal Processing Devices (DSPDs), programmable Logic Devices (PLDs), field Programmable Gate Arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic elements for executing the methods described above.

In an exemplary embodiment, a non-transitory computer readable storage medium is also provided, such as memory 804 including instructions executable by processor 820 of terminal 800 to perform the above-described method. For example, the non-transitory computer readable storage medium may be ROM, random Access Memory (RAM), CD-ROM, magnetic tape, floppy disk, optical data storage device, etc.

As shown in fig. 18, an embodiment of the present disclosure shows a structure of a base station. For example, base station 900 may be provided as a network-side device. Referring to fig. 18, base station 900 includes a processing component 922 that further includes one or more processors and memory resources represented by memory 932 for storing instructions, such as applications, executable by processing component 922. The application programs stored in memory 932 may include one or more modules that each correspond to a set of instructions. Further, processing component 922 is configured to execute instructions to perform any of the methods described above as applied at the base station.

Base station 900 may also include a power component 926 configured to perform power management for base station 900, a wired or wireless network interface 950 configured to connect base station 900 to a network, and an input output (I/O) interface 958. The base station 900 may operate based on an operating system stored in memory 932, such as Windows Server TM, mac OS XTM, unixTM, linuxTM, freeBSDTM, or the like.

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

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

Claims

A method of wireless communication, wherein the method is performed by an access network device, the method comprising:

sending indication information to a terminal;

wherein the indication information is used for indicating at least one of the following:

comb-shaped resource structure types configured for terminals under different transmission access points TRPs are used for determining frequency domain resources for transmitting sounding reference signals SRS;

a cyclic shift parameter configured for a terminal under different TPRs, the cyclic shift parameter being used to determine an SRS resource sequence; the cyclic shift parameters configurable under different TRPs are different.
The method of claim 1, wherein the comb structure type comprises one of:

a second type comb structure comb-2;

comb-3 of a third type;

a fourth type comb structure comb-4;

comb structures comb-6 of the sixth type.
The method of claim 1, wherein the cyclic shift parameter comprises a maximum cyclic shift value and/or a cyclic shift initial value.
The method of claim 3, wherein the SRS resource sequences of the different TRPs determined based on the cyclic shift parameter are mutually orthogonal.
The method of claim 1, wherein the indication information further comprises an indication of at least one of:

a base sequence;

comb offset values.
A wireless communication method, wherein the method is performed by a terminal, the method comprising:

receiving indication information sent by access network equipment;

wherein the indication information is used for indicating at least one of the following:

comb-shaped resource structure types configured for terminals under different transmission access points TRPs are used for determining frequency domain resources for transmitting sounding reference signals SRS;

a cyclic shift parameter configured for a terminal under different TPRs, the cyclic shift parameter being used to determine an SRS resource sequence; the cyclic shift parameters configurable under different TRPs are different.
The method of claim 6, wherein the comb structure type comprises one of:

a second type comb structure comb-2;

comb-3 of a third type;

a second type comb structure comb-4;

comb structures comb-6 of the sixth type.
The method of claim 6, wherein the cyclic shift parameter comprises a maximum cyclic shift value and/or a cyclic shift initial value.
The method of claim 8, wherein SRS resource sequences of different of the TRPs determined based on the cyclic shift parameter are mutually orthogonal.
The method of claim 6, wherein the indication information further comprises an indication of at least one of:

a base sequence;

comb offset values.
A wireless communications apparatus, wherein the apparatus comprises:

the sending module is configured to send indication information to the terminal;

wherein the indication information is used for indicating at least one of the following:

comb-shaped resource structure types configured for terminals under different transmission access points TRPs are used for determining frequency domain resources for transmitting sounding reference signals SRS;

a cyclic shift parameter configured for a terminal under different TPRs, the cyclic shift parameter being used to determine an SRS resource sequence; the cyclic shift parameters configurable under different TRPs are different.
A wireless communications apparatus, wherein the apparatus comprises:

the receiving module is configured to receive indication information sent by the access network equipment;

Wherein the indication information is used for indicating at least one of the following:

comb-shaped resource structure types configured for terminals under different transmission access points TRPs are used for determining frequency domain resources for transmitting sounding reference signals SRS;

a cyclic shift parameter configured for a terminal under different TPRs, the cyclic shift parameter being used to determine an SRS resource sequence; the cyclic shift parameters configurable under different TRPs are different.
A communication device, comprising:

a memory;

a processor, coupled to the memory, configured to execute computer-executable instructions stored on the memory and to implement the method of any one of claims 1 to 5.
A computer storage medium storing computer executable instructions which, when executed by a processor, enable the method of any one of claims 1 to 5.