Measurement reference signal configuration method and device

Abstract

The embodiment of the invention provides a measurement reference signal configuration method and device. The network device determines a first SRS resource set and a first SRS base sequence group; wherein the combination of the first SRS resource set and the first SRS base sequence group is one of M * N combinations obtained by permutation and combination of the M SRS resource sets and the N SRS base sequence groups, the M * N combinations and the M * N cells are in one-to-one correspondence, resources of any two SRS resource sets in the M SRS resource sets do not coincide, and the combination of the first SRS resource set and the first SRS base sequence group corresponds to the first cell; and configuring the terminal equipment in the first cell to send the SRS based on the first SRS resource set and the first SRS base sequence group. According to the scheme, when the network equipment configures the SRS resource and the SRS base sequence group for the cells, the cooperative cooperation among the plurality of cells is considered, and the problem of SRS signal interference among different cells can be improved or avoided.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and in particular to a measurement reference signal configuration method and device. Background Art

[0002] The sounding reference signal (SRS) is a signal used to measure the channel state information (CSI) between the terminal device and the network device. In the new radio (NR) system, the terminal device can send the SRS according to the resources configured by the network device and the identity document (ID) of the SRS base sequence group. The network device performs channel estimation based on the received SRS to obtain the CSI, and further performs operations such as beam management and weight calculation based on the CSI.

[0003] SRS is a sequence signal generated based on the Zadoff-Chu sequence. According to the description in the third generation partnership project (3GPP) technical specification (TS 38.211), the existing technology supports up to 30 SRS base sequence groups. The terminal device can generate a SRS base sequence group assigned to it by the network device (such as the network device through the standard signaling). The SRS signal is generated based on the parameters informed to the terminal device).

[0004] In actual networks, multiple cells are connected to provide wireless connections for terminal devices in the area. When the number of cells exceeds 30, different cells will inevitably reuse the same SRS base sequence group. At this time, if the resource locations of SRS sent by terminal devices in different cells are also the same, SRS signal interference between different cells will occur, affecting the channel estimation of network devices. Summary of the invention

[0005] A measurement reference signal configuration method and device provided in an embodiment of the present application are used to solve the problem of SRS signal interference between different cells and improve the reliability and accuracy of channel estimation of network equipment.

[0006] In a first aspect, an SRS configuration method is provided, which can be applied to a network device or a chip in the network device. Taking the application of the method to a network device as an example: the network device determines a first SRS resource set and a first SRS base sequence group; wherein the combination of the first SRS resource set and the first SRS base sequence group is one of M*N combinations obtained by permuting and combining M SRS resource sets and N SRS base sequence groups, the M*N combinations correspond to M*N cells one by one, resources of any two SRS resource sets in the M SRS resource sets do not overlap, the M*N cells include a first cell, the combination of the first SRS resource set and the first SRS base sequence group corresponds to the first cell, M is a positive integer greater than 1, and N is a positive integer greater than 1; based on the first SRS resource set and the first SRS base sequence group, a terminal device in the first cell is configured to send SRS.

[0007] In the above scheme, when the network device configures SRS resources and SRS base sequence groups for a cell, the coordination between multiple cells is considered, that is, the available resources of SRS are decomposed into M non-overlapping SRS resource sets and arranged and combined with N SRS base sequence groups to obtain M*N different combinations, and the M*N combinations correspond to the M*N cells one by one. When the network device allocates SRS resources and SRS base sequence groups to each cell (such as the first cell), the network device allocates the SRS resource set and SRS base sequence group corresponding to the cell in the M*N combinations to the cell (such as configuring the first SRS resource set and the first SRS base sequence group for the first cell), so that the SRS sent by the terminal devices of the M*N cells can be avoided from SRS collision, thereby improving or avoiding the problem of SRS signal interference between different cells, improving the reliability of the channel estimation of the network device, and improving the reliability of communication.

[0008] In a possible design, the identifier of the first cell and the identifier of the first SRS resource set satisfy the following relationship:

[0009] λ=(X+n)mod M;

[0010] Wherein, X is the identifier of the first cell, λ is the identifier of the first SRS resource set, and n is the offset.

[0011] Of course, the above formulas are only examples, and there may be other variations in practice.

[0012] In a possible design, the identifier of the first cell and the identifier of the first SRS base sequence group satisfy the following relationship:

[0013]

[0014] Wherein, α is the identifier of the first SRS base sequence group, and p and q are offsets.

[0015] Of course, the above formulas are only examples, and there may be other variations in practice.

[0016] In a possible design, the identifier of the first cell and the identifier of the first SRS base sequence group satisfy the following relationship:

[0017]

[0018] Wherein, α is the identifier of the first SRS base sequence group, and p and q are offsets.

[0019] Of course, the above formulas are only examples, and there may be other variations in practice.

[0020] In a possible design, the identifier of the first cell is a physical cell index (PCI) or a transmission reception point (TRP) identifier or a virtual cell identifier. Of course, the above is only an example, and there may be other identifier forms in practice.

[0021] In one possible design, N is a positive integer less than or equal to 30.

[0022] In one possible design, the network device may send first SRS configuration information to a first terminal device in a first cell based on a first SRS resource set and a first SRS base sequence group; wherein the first SRS configuration information indicates a first SRS resource and a first SRS base sequence group, and the first SRS resource belongs to the first SRS resource set.

[0023] In this way, it is possible to configure the first SRS base sequence group and the first SRS resource in the first SRS resource set for the first terminal device, thereby ensuring the reliability of the solution.

[0024] In a second aspect, an SRS configuration method is provided, which can be applied to a terminal device or a chip in the terminal device. Taking the method applied to a first terminal device in a first cell as an example: the first terminal device receives first SRS configuration information from a network device, the first SRS configuration information indicates a first SRS resource and a first SRS base sequence group; wherein the first SRS resource belongs to a first SRS resource set, the combination of the first SRS resource set and the first SRS base sequence group is one of M*N combinations obtained by permuting and combining M SRS resource sets and N SRS base sequence groups, the M*N combinations correspond to the M*N cells one-to-one, resources of any two SRS resource sets in the M SRS resource sets do not overlap, the M*N cells include the first cell, the combination of the first SRS resource set and the first SRS base sequence group corresponds to the first cell, M is a positive integer greater than 1, and N is a positive integer greater than 1;

[0025] An SRS is transmitted on a first SRS resource according to a first SRS base sequence group.

[0026] In a possible design, the identifier of the first cell and the identifier of the first SRS resource set satisfy the following relationship:

[0027] λ=(X+n)mod M;

[0028] Wherein, X is the identifier of the first cell, λ is the identifier of the first SRS resource set, and n is the offset.

[0029] In a possible design, the identifier of the first cell and the identifier of the first SRS base sequence group satisfy the following relationship:

[0030]

[0031] Wherein, α is the identifier of the first SRS base sequence group, and p and q are offsets.

[0032] In a possible design, the identifier of the first cell and the identifier of the first SRS base sequence group satisfy the following relationship:

[0033]

[0034] Wherein, α is the identifier of the first SRS base sequence group, and p and q are offsets.

[0035] In one possible design, the identifier of the first cell is a physical cell identifier PCI or a transmission receiving point TRP identifier or a virtual cell identifier.

[0036] In one possible design, N is a positive integer less than or equal to 30.

[0037] In a third aspect, a communication device is provided, the device comprising a module or unit or technical means for executing the method described in the first aspect or any possible design of the first aspect. Exemplarily, the device may include:

[0038] A processing module, used to determine a first SRS resource set and a first SRS base sequence group; wherein the combination of the first SRS resource set and the first SRS base sequence group is one of M*N combinations obtained by permuting and combining M SRS resource sets and N SRS base sequence groups, the M*N combinations correspond to the M*N cells one by one, resources of any two SRS resource sets in the M SRS resource sets do not overlap, the M*N cells include the first cell, the combination of the first SRS resource set and the first SRS base sequence group corresponds to the first cell, M is a positive integer greater than 1, and N is a positive integer greater than 1;

[0039] The transceiver module is used to configure the terminal device in the first cell to send SRS based on the first SRS resource set and the first SRS base sequence group.

[0040] In a fourth aspect, a communication device is provided, the device comprising a module or unit or technical means for executing the method described in the second aspect or any possible design of the second aspect. Exemplarily, the device may include:

[0041] A transceiver module is used to receive first SRS configuration information from a network device, where the first SRS configuration information indicates a first SRS resource and a first SRS base sequence group; wherein the first SRS resource belongs to a first SRS resource set, and the combination of the first SRS resource set and the first SRS base sequence group is one of M*N combinations obtained by permuting and combining M SRS resource sets and N SRS base sequence groups, the M*N combinations correspond to the M*N cells one by one, resources of any two SRS resource sets in the M SRS resource sets do not overlap, the M*N cells include the first cell, the combination of the first SRS resource set and the first SRS base sequence group corresponds to the first cell, M is a positive integer greater than 1, and N is a positive integer greater than 1; the transceiver module is also used to send SRS on the first SRS resource according to the first SRS base sequence group.

[0042] In a fifth aspect, a communication device is provided, comprising: a processor, the processor being coupled to a memory, the memory being used to store programs or instructions, and when the program or instructions are executed by the processor, the communication device executes the method described in the first aspect or any possible design of the first aspect, or the communication device executes the method described in the second aspect or any possible design of the second aspect.

[0043] In a sixth aspect, a computer-readable storage medium is provided, wherein a computer program or instruction is stored in the storage medium. When the computer program or instruction is executed by a communication device, the method described in the first aspect or any possible design of the first aspect is implemented, or the method described in the second aspect or any possible design of the second aspect is implemented.

[0044] In a seventh aspect, a communication system is provided, comprising a communication device as described in the third aspect or any possible design of the third aspect and a communication device as described in the fourth aspect or any possible design of the fourth aspect.

[0045] In an eighth aspect, a computer program product is provided, the computer program product comprising a computer program or instructions, which, when executed by a communication device, causes the method described in the first aspect or any possible design of the first aspect to be executed, or causes the method described in the second aspect or any possible design of the second aspect to be executed.

[0046] For the technical effects that can be achieved by the above-mentioned second to eighth aspects, please refer to the description of the technical effects that can be achieved by the corresponding design scheme in the above-mentioned first aspect, and this application will not repeat them here. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 A schematic diagram of a communication system provided in an embodiment of the present application;

[0048] Figure 2 A flowchart of an SRS configuration method provided in an embodiment of the present application;

[0049] Figure 3 Schematic diagram of configuring a first terminal device to send SRS for a network device

[0050] Figure 4 A schematic diagram of the structure of a communication device provided in an embodiment of the present application;

[0051] Figure 5 A schematic diagram of the structure of another communication device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0052] The terms "system" and "network" in the embodiments of the present application can be used interchangeably. "At least one" means one or more, and "plurality" means two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone, where A and B can be singular or plural. The character " / " generally indicates that the associated objects before and after are in an "or" relationship. "At least one of the following" or its similar expressions refers to any combination of these items, including any combination of single items or plural items, such as at least one of a, b or c, which can represent: a, or b, or c, or a and b, or b and c, or a and c, or a and b and c. "A exceeds B" in this application means that A is greater than B; "A does not exceed B" means that A is less than or equal to B.

[0053] Furthermore, unless otherwise specified, the ordinal numbers such as "first" and "second" mentioned in the embodiments of the present application are used to distinguish multiple objects, and are not used to limit the order, timing, priority or importance of multiple objects. For example, the first priority criterion and the second priority criterion are only used to distinguish different criteria, and do not indicate the difference in the content, priority or importance of the two criteria.

[0054] In addition, the terms "including" and "having" in the embodiments, claims and drawings of the present application are not exclusive. For example, a process, method, system, product or device including a series of steps or modules is not limited to the listed steps or modules, and may also include steps or modules that are not listed.

[0055] The embodiments of the present application can be applied to scenarios where terminal devices communicate with network devices.

[0056] See also Figure 1 , is a schematic diagram of a communication system provided in an embodiment of the present application, comprising at least one terminal device and at least one network device, Figure 1 Two terminal devices and two network devices are shown, namely, terminal device 101, terminal device 102 and network device 103, network device 104, but it is not limited thereto.

[0057] The network device 103 is used to perform access management and handover management on the terminal device 101 and to communicate with the core network. The network device 104 is used to perform access management and handover management on the terminal device 102 and to communicate with the core network.

[0058] The network device described in the embodiments of the present application includes an access network (Radio Access Network, RAN) device, which may sometimes also be referred to as an access network node or a RAN node or a RAN entity or an access node or a RAN network element, etc., and constitutes a part of a communication system to help terminals achieve wireless access.

[0059] Access network equipment such as a base station (BS), or a base station and a radio resource management device for controlling the base station, etc. The base station may include an evolved NodeB (NodeB or eNB or e-NodeB, evolved Node B) in a long term evolution (LTE) system or an advanced long term evolution (LTE-A), or may also include a next generation node B (next generation node B, gNB) or a next generation evolved node B (next generation evolved nodeB, ng-eNB), en-gNB (enhanced next generation node B, gNB) in a fifth generation mobile communication technology (the 5th generation, 5G) new radio (new radio, NR) system: an enhanced next generation base station; it may also include a centralized unit (centralized unit, CU) and a distributed unit (distributed unit, DU) in a cloud access network (cloud radio access network, Cloud RAN) system, etc., which is not limited in the embodiments of the present application.

[0060] In one possible scenario, multiple RAN nodes collaborate to assist the terminal in achieving wireless access, and different RAN nodes respectively implement part of the functions of the base station. For example, the RAN node can be a centralized unit (CU), a distributed unit (DU), a CU-control plane (CP), a CU-user plane (UP), or a radio unit (RU). The CU and DU can be set separately, or can also be included in the same network element, such as a baseband unit (BBU). The RU can be included in a radio frequency device or a radio frequency unit, such as a remote radio unit (RRU), an active antenna unit (AAU) or a remote radio head (RRH).

[0061] In different systems, CU (or CU-CP and CU-UP), DU or RU may also have different names, but those skilled in the art can understand their meanings. For example, in the ORAN system, CU may also be called O-CU (open CU), DU may also be called O-DU, CU-CP may also be called O-CU-CP, CU-UP may also be called O-CU-UP, and RU may also be called O-RU. For the convenience of description, CU, CU-CP, CU-UP, DU and RU are described as examples in this application. Any unit of CU (or CU-CP, CU-UP), DU and RU in this application may be implemented by a software module, a hardware module, or a combination of a software module and a hardware module.

[0062] In some embodiments, the network device may also include a core network device.

[0063] The terminal device described in the embodiment of the present application may also be referred to as a terminal, user equipment (UE), mobile station, mobile terminal, etc. The terminal device can be widely used in various scenarios, for example, device-to-device (D2D), vehicle to everything (V2X) communication, machine-type communication (MTC), Internet of Things (IOT), virtual reality, augmented reality, industrial control, automatic driving, telemedicine, smart grid, smart furniture, smart office, smart wear, smart transportation, smart city, etc. The terminal device can be a mobile phone, a tablet computer, a computer with wireless transceiver function, a wearable device, a vehicle, a drone, a helicopter, an airplane, a ship, a robot, a mechanical arm, a smart home device, etc. The embodiment of the present application does not limit the specific technology and specific device form adopted by the terminal device. It should be understood that the terminal device can be configured to support communication with the network device through the universal user and network air interface (universal user to network interface, Uu).

[0064] A network device can manage one or more cells. Figure 1 For example, each network device manages a cell, that is, network device 103 manages cell 105, and network device 104 manages cell 106. The present invention is not limited thereto. The cell managed by a network device may also be referred to as a cell of the network device, or a cell covered by the network device, and so on.

[0065] Different cells have different coverage and / or frequency domain resources (such as carriers or carrier frequency bands). The network device can use the wireless transmission resources of the cell it manages to communicate with the terminal device in the cell. For example, the network device 103 can use the wireless transmission resources of the cell 105 to communicate with the terminal device 101, and the network device 104 can use the transmission resources of the cell 106 to communicate with the terminal device 103 in the cell 106.

[0066] Cells that are geographically adjacent to each other may be "neighboring cells" (or "neighboring cells"). The coverage areas of adjacent cells may not overlap or at least partially overlap. Figure 1 As shown, cell 105 and cell 106 partially overlap. It can be understood that the coverage of two cells may also be that the coverage of one cell may include the coverage of another cell.

[0067] Above Figure 1 The illustrated communication system may support various radio access technologies (RATs), such as Figure 1 The communication system illustrated may be a fifth generation (5G) communication system (also referred to as a new radio (NR) communication system), a 6G communication system, or a future-oriented evolution system.

[0068] It can be understood that the network architecture and business scenarios described in the embodiments of the present application are intended to more clearly illustrate the technical solutions of the embodiments of the present application, and do not constitute a limitation on the technical solutions provided in the embodiments of the present application. Ordinary technicians in this field can know that with the evolution of network architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.

[0069] In order to ensure the reliability of communication between the network device and the terminal device, the network device may configure the terminal device to send a sounding reference signal (SRS) and perform channel estimation by measuring the SRS of the terminal device.

[0070] Among them, SRS is a signal for measuring the wireless channel state information (CSI) between the terminal device and the network device. In the NR system, the terminal device can send SRS in the corresponding resource position according to the specified configuration based on the parameters such as the resources configured by the network device (such as period, time domain position, frequency domain position, cyclic shift) and the identity document (ID) of the SRS base sequence group. The network device can perform channel estimation based on the received SRS to obtain CSI, and further perform operations such as beam management and weight calculation based on the CSI.

[0071] SRS is a sequence signal generated based on the Zadoff-Chu sequence. According to the description in the third generation partnership project (3GPP) technical specification (TS) 38.211, the NR system supports up to 30 SRS base sequence groups. The terminal device uses the identifier of the SRS base sequence group issued by the network device (such as ) determines the SRS base sequence group allocated by the network device and generates an SRS signal based on the SRS base sequence group.

[0072] In actual networks, multiple cells are connected to provide wireless connections for terminal devices in the area. When the number of cells exceeds 30, different cells will inevitably reuse the same SRS base sequence group. At this time, if the resource locations of SRS sent by terminal devices in different cells are also the same, SRS signal interference between different cells will occur, affecting the channel estimation of network devices.

[0073] In view of this, a technical solution of an embodiment of the present application is provided, which can improve or avoid the problem of SRS signal interference between different cells, improve the reliability of channel estimation of network equipment, and further improve the reliability of communication between network equipment and terminal equipment.

[0074] See also Figure 2 , is a flowchart of an SRS configuration method provided in an embodiment of the present application, which can be applied to Figure 1 The communication system shown in the method includes S201-S202:

[0075] S201. A network device determines a first SRS resource set and a first SRS base sequence group.

[0076] The network device can be Figure 1 The network device 103 or the network device 104 is shown.

[0077] The combination of the first SRS resource set and the first SRS base sequence group is one of M*N combinations obtained by permuting and combining M SRS resource sets and N SRS base sequence groups, the M*N combinations correspond to the M*N cells one by one, the resources of any two SRS resource sets in the M SRS resource sets do not overlap, the M*N cells include the first cell, the combination of the first SRS resource set and the first SRS base sequence group corresponds to the first cell, M is a positive integer greater than 1, and N is a positive integer greater than 1. The first cell is any one of the M*N cells.

[0078] The first cell is a cell managed by the network device. Optionally, the M*N cells may include all cells managed by the network device. Further, the M*N cells may also include cells managed by other network devices. For example, when the network device is Figure 1 In the network device 103 shown, the first cell may be the cell 105; the M*N cells may include the cell 105 and the cell 106, and may also include other cells without limitation.

[0079] In a specific implementation, the network device may obtain all available resources of the SRS (i.e., SRS resources) according to the configuration of the communication system (such as the NR system), wherein the resources may include one or more of time domain resources, frequency domain resources, code domain resources, etc. The network device may decompose all available resources into M non-overlapping resource sets, each resource set corresponding to at least one of the determined time domain resources, frequency domain resources, code domain resources, etc. The identifiers of the M resource sets are, for example, 0, 1, 2, ..., M-1 in sequence.

[0080] Among them, time domain resources include but are not limited to one or more of period, time slot position, starting symbol, symbol length, etc. Frequency domain resources include but are not limited to one or more of frequency comb in frequency domain, starting position in frequency domain, bandwidth, frequency hopping, etc. Code domain resources include but are not limited to cyclic shift.

[0081] The N SRS base sequence groups are part or all of the SRS base sequence groups supported by the system. For example, if the system supports 30 SRS base sequence groups, the value of N is a positive integer greater than 1 and less than 31. It can be understood that as the communication system evolves, the number of SRS base sequence groups supported by the system may be different, and the embodiments of the present application do not limit this. For ease of description, N=30 is mainly used as an example below.

[0082] Each base sequence group may include one or more SRS base sequences, for example, 1 base sequence or 2 base sequences.

[0083] By arranging and combining M resource sets and N SRS base sequence groups, at most M*N different combinations of resource sets and SRS base sequence groups can be determined, which can support the scenario where the SRS resource positions and SRS base sequence groups do not overlap in M*N cells, that is, M*N combinations correspond to M*N cells one by one, so SRS signal interference between M*N cells can be avoided.

[0084] It can be understood that the identifier of the SRS base sequence group in the embodiment of the present application can be the identifier of the SRS base sequence group specified by the protocol, or it can be other identifiers. When the identifier of the SRS base sequence group is not the identifier of the SRS base sequence group specified by the protocol, the terminal device receives the identifier of the SRS base sequence group and can convert (or map) it into the identifier of the SRS base sequence group specified by the protocol.

[0085] Exemplarily, when the value range of the identifier (or number) of the SRS base sequence group specified by the protocol is [a, b] (such as [0, 29]), the value range of the identifier of the SRS base sequence group configured by the network device for the terminal device may be within the value range [a, b] specified by the protocol, or may not be limited to the value range [a, b] specified by the protocol, for example, it may be greater than b. If the identifier of the SRS base sequence group configured by the network device for the terminal device exceeds [a, b], then after the terminal device receives the identifier of the SRS base sequence group sent by the network device, it may perform an operation (such as a modulo operation) on it and map it to the value range [a, b] specified by the protocol. For example, if the identifier of the SRS base sequence group configured by the network device for the terminal device is α, the terminal device may perform the following operation on α:

[0086]

[0087] Among them, α′ is the identifier of the SRS base sequence group finally determined by the terminal device. Within the value range specified by the protocol, α′ can uniquely identify an SRS base sequence group. is the timeslot number in a radio frame when the subcarrier spacing is configured as μ, l ′ is the OFDM symbol offset, is a mapping function, and its value can be one of the following three cases:

[0088] (1) When the base station configures the UE to non-group hopping and non-sequence hopping, is 0;

[0089] (2) When the base station configures the UE to sequence hop, is 0;

[0090] (3) When the base station configures the UE to group hop,

[0091] in, is the number of OFDM symbols in one time slot, and l0 is the OFDM symbol offset.

[0092] For example, taking M=3, N=30, and 90 cells as an example, the cell identifier takes a positive integer from 0 to 89, the SRS base sequence group identifier specified by the protocol takes a positive integer from 0 to 29, and the resource set identifier takes a positive integer from 0 to 2. Referring to Table 1, there can be 90 different combinations of resource sets and SRS base sequence groups, corresponding to 90 cells respectively:

[0093] Table 1

[0094]

[0095] The base sequence group identifiers in Table 1 whose values ​​are greater than or equal to 30 need to be mapped to the range of 0-29 by modulo operation, for example, 31mod30=1, corresponding to the base sequence group numbered 1.

[0096] In one possible design, the network device can save the correspondence between the above-mentioned M*N combinations and M*N cells (for example, save Table 1). When the network device determines the SRS resource set and SRS sequence group for the first cell, it can query the correspondence based on the identifier of the first cell to determine the SRS resource set and SRS base sequence group corresponding to the first cell, that is, the first SRS resource set and the first SRS base sequence group.

[0097] In another possible design, the identifier of the first cell and the identifier of the first SRS resource set satisfy the following relationship:

[0098] λ=(X+n)mod M;

[0099] Wherein, X is the identifier of the first cell, λ is the identifier of the first SRS resource set, "mod" represents a modulo operation, and n is an offset. The value of X is, for example, 0 or a positive integer, and the value of n is, for example, an integer (for example, n=-2 or -1 or 0 or 1 or 2 or 3, etc.). The specific value can be flexibly set according to the requirements, and this application does not impose any restrictions.

[0100] The identifier of the first cell and the identifier of the first SRS base sequence group satisfy the following relationship:

[0101] or,

[0102] Wherein, α is the identifier of the first SRS base sequence group (for example, ), Indicates rounding down. Indicates rounding up.

[0103] It can be understood that the above formula is only an example and there may be other variations in actual applications.

[0104] Correspondingly, when the network device determines the SRS resource set and the SRS base sequence group for the first cell, it may determine the first SRS resource set and the first SRS base sequence group according to the above formula based on the identifier of the first cell.

[0105] Take n=0, p=0, q=0, M=3, N=30 as an example: When X=0, substitute into the formula λ=(X+n)mod M, We get λ=0, α=0, that is, the resource set identifier corresponding to cell 0 is 0, and the identifier of the SRS base sequence group is 0; when X=1, substitute into the formula λ=(X+n)mod M, We get λ=1, α=1, that is, the resource set identifier corresponding to cell 1 is 1, and the identifier of the SRS base sequence group is 1; when X=89, substitute into the formula λ=(X+n)modM, It is obtained that λ=2, α=91, the resource set identifier corresponding to cell 89 is 2, and the identifier of the SRS base sequence group is 91 (the terminal device can map it to the range of 0 to 29).

[0106] It can be understood that the above are only examples, and the identifier of the actual cell, the identifier of the resource set, and the identifier of the SRS base sequence group are not limited thereto.

[0107] In an embodiment of the present application, the identifier of the first cell may be a physical cell identifier (physical cell index, PCI), a transmission reception point (transmission reception point, TRP) identifier, or a virtual cell identifier (such as an index value), etc., and the present application does not make any specific restrictions.

[0108] S202. The network device configures a terminal device in the first cell to send an SRS based on a first SRS resource set and a first SRS base sequence group.

[0109] Specifically, the network device can configure different resources for different terminal devices in the first cell, and configure the first SRS base sequence group for each terminal device. The configuration of resources and the configuration of the first SRS base sequence group can be performed simultaneously or successively, and this application does not limit this.

[0110] See also Figure 3 , taking the example of a network device configuring a first terminal device in a first cell to send an SRS, the steps may include steps S2021 to S2022:

[0111] S2021. The network device sends first SRS configuration information to a first terminal device in a first cell according to a first SRS resource set and a first SRS base sequence group; correspondingly, the first terminal device receives the first SRS configuration information from the network device;

[0112] The first SRS configuration information indicates a first SRS resource and a first SRS base sequence group, and the first SRS resource belongs to a first SRS resource set. For example, the first SRS configuration information includes an identifier of the first SRS resource and an identifier of the first SRS base sequence group.

[0113] For example, when the network device is network device 103, the first terminal device is any terminal device in cell 105, such as terminal device 101. For example, when the network device is network device 104, the first terminal device is any terminal device in cell 106, such as terminal device 102.

[0114] S2022. The first terminal device sends an SRS on the first SRS resource according to the first SRS base sequence group, and correspondingly, the network device receives the SRS sent by the first terminal device.

[0115] For the configuration of other terminal devices in the first cell, reference can be made to S2021 to S2022 above, except that the configured SRS resources are different. For example, the network device sends second SRS configuration information to the second terminal device in the first cell according to the first SRS resource set and the first SRS base sequence group, wherein the second SRS configuration information indicates the second SRS resource and the first SRS base sequence group, the second SRS resource belongs to the first SRS resource set, and the second SRS resource is different from the first SRS resource.

[0116] In the above scheme, when the network equipment allocates SRS resources and SRS base sequence groups to the cells, the coordination between multiple cells is considered (that is, all available SRS resources are decomposed into M non-overlapping SRS resource sets and arranged and combined with N SRS base sequence groups to obtain M*N different combinations. When configuring SRS resources and SRS base sequence groups for each cell, the configuration is performed based on the M*N combinations, so that the M*N combinations correspond to the M*N cells one by one, and the SRS sent by the terminal devices of at most M*N cells can be guaranteed not to collide). The problem of SRS signal interference between different cells can be improved or avoided, thereby improving the reliability of channel estimation of the network equipment and improving the reliability of communication. For example, when M=3 and N=30, it can be guaranteed that there is no SRS signal interference between 90 cells at most. According to the cell coverage in real life, SRS signal interference between cells can basically be avoided.

[0117] The method provided by the embodiment of the present application is introduced above in combination with the accompanying drawings, and the device provided by the embodiment of the present application is introduced below in combination with the accompanying drawings.

[0118] The embodiment of the present application provides a communication device, which includes a module / unit / means for executing the method executed by the network device or terminal device in the above method embodiment. The module / unit / means can be implemented by software, or by hardware, or the corresponding software can be implemented by hardware.

[0119] For example, see Figure 4 The communication device may include a processing module 401 and a transceiver module 402 .

[0120] When the communication device is a network device or is applied to a network device, the processing module 401 can be used to determine a first SRS resource set and a first SRS base sequence group; wherein the combination of the first SRS resource set and the first SRS base sequence group is one of M*N combinations obtained by permuting and combining M SRS resource sets and N SRS base sequence groups, the M*N combinations correspond to the M*N cells one-to-one, the resources of any two SRS resource sets in the M SRS resource sets do not overlap, the M*N cells include the first cell, the combination of the first SRS resource set and the first SRS base sequence group corresponds to the first cell, M is a positive integer greater than 1, and N is a positive integer greater than 1; the transceiver module 402 can be used to configure the terminal device in the first cell to send SRS based on the first SRS resource set and the first SRS base sequence group.

[0121] Taking configuring the first terminal device in the first cell to send SRS as an example, the transceiver module 402 can be used to: send first SRS configuration information to the first terminal device in the first cell according to the first SRS resource set and the first SRS base sequence group; wherein the first SRS configuration information indicates the first SRS resource and the first SRS base sequence group, and the first SRS resource belongs to the first SRS resource set.

[0122] For example, when the communication device is a terminal device or is applied to a terminal device, the transceiver module 402 can be used to receive the first SRS configuration information from the network device, the first SRS configuration information indicates the first SRS resource and the first SRS base sequence group; wherein the first SRS resource belongs to the first SRS resource set, the combination of the first SRS resource set and the first SRS base sequence group is one of the M*N combinations obtained by arranging and combining M SRS resource sets and N SRS base sequence groups, the M*N combinations correspond to the M*N cells one by one, the resources of any two SRS resource sets in the M SRS resource sets do not overlap, the M*N cells include the first cell, the combination of the first SRS resource set and the first SRS base sequence group corresponds to the first cell, M is a positive integer greater than 1, and N is a positive integer greater than 1; the transceiver module 402 can also be used to send SRS on the first SRS resource according to the first SRS base sequence group. Optionally, the processing module 401 is used to generate SRS.

[0123] In a possible design, the identifier of the first cell and the identifier of the first SRS resource set may satisfy the following relationship:

[0124] λ=(X+n)mod M;

[0125] Wherein, X is the identifier of the first cell, λ is the identifier of the first SRS resource set, and n is the offset.

[0126] Further, the identifier of the first cell and the identifier of the first SRS base sequence group may satisfy the following relationship:

[0127] or,

[0128] Wherein, α is the identifier of the first SRS base sequence group, and p and q are offsets.

[0129] The identifier of the first cell may be a physical cell identifier PCI, a transmission receiving point TRP identifier, or a virtual cell identifier, etc., and is not limited in the embodiment of the present application.

[0130] In some embodiments, the value of N may be determined according to the number of SRS base sequence groups supported by the communication system, which is not specifically limited in this application. For example, when the communication system supports 30 SRS base sequence groups, N may be a positive integer less than or equal to 30.

[0131] In specific implementation, the above device can have a variety of product forms. Several possible product forms are introduced below.

[0132] See also Figure 5 , the embodiment of the present application also provides a communication device. It is understandable that the communication device includes necessary forms of technical means such as modules, units, elements, circuits, or interfaces, which are appropriately configured together to implement the present solution. The communication device can be the network device or terminal device in the above method embodiment, or it can be a component (such as a chip) in these devices, to implement the method performed by the network device or terminal device in the above method embodiment.

[0133] The communication device includes one or more processors 501. The processor 501 may be a general-purpose processor or a dedicated processor, etc. For example, it may be a baseband processor or a central processing unit. The baseband processor may be used to process the communication protocol and communication data, and the central processing unit may be used to control the communication device (such as a RAN node, a terminal, or a chip, etc.), execute a software program, and process the data of the software program.

[0134] Optionally, in one design, the processor 501 may include a program 503 (sometimes also referred to as code or instructions), and the program 503 may be run on the processor 501, so that the communication device executes the method executed by the first terminal or the second terminal or the network device in the above method embodiment.

[0135] In yet another possible design, the communication device includes a circuit ( Figure 5 The circuit is used to implement the function of the method executed by the first terminal or the second terminal or the network device in the above method embodiment.

[0136] Optionally, the communication device may include one or more memories 502, on which a program 504 (sometimes also referred to as code or instruction) is stored. The program 504 can be run on the processor 501, so that the communication device executes the method executed by the first terminal or the second terminal or the network device in the above method embodiment.

[0137] Optionally, the processor 501 and / or the memory 502 may include an AI module 507, 508, and the AI ​​module is used to implement AI-related functions. The AI ​​module may be implemented by software, hardware, or a combination of software and hardware. For example, the AI ​​module may include a RIC module. For example, the AI ​​module may be a near real-time RIC or a non-real-time RIC.

[0138] Optionally, data may also be stored in the processor 501 and / or the memory 502. The processor and the memory may be provided separately or integrated together.

[0139] Optionally, the communication device may further include a transceiver 505 and / or an antenna 506. The processor 501 may also be sometimes referred to as a processing unit, which controls the communication device (e.g., a RAN node or a terminal). The transceiver 505 may also be sometimes referred to as a transceiver unit, a transceiver, a transceiver circuit, or a transceiver, etc., which is used to implement the transceiver function of the communication device through the antenna 506.

[0140] It should be understood that the processor mentioned in the embodiments of the present application can be implemented by hardware or by software. When implemented by hardware, the processor can be a logic circuit, an integrated circuit, etc. When implemented by software, the processor can be a general-purpose processor implemented by reading software code stored in a memory.

[0141] Exemplarily, the processor may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc.

[0142] It should be understood that the memory mentioned in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memories. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM), which is used as an external cache. By way of example and not limitation, many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM) and direct memory bus random access memory (DirectRambus RAM, DR RAM).

[0143] It should be noted that when the processor is a general-purpose processor, DSP, ASIC, FPGA or other programmable logic device, discrete gate or transistor logic device, discrete hardware component, the memory (storage module) can be integrated into the processor.

[0144] It should be noted that the memory described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0145] Based on the same technical concept, an embodiment of the present application also provides a computer-readable storage medium, which stores a computer program or instruction. When the computer program or instruction is executed by a communication device, the method steps performed by the network device or terminal device in the above method embodiment are implemented.

[0146] Based on the same technical concept, an embodiment of the present application also provides a computer program product, which includes a computer program or instructions. When the computer program or the instructions are run by a communication device, the method steps performed by the network device or the terminal device in the above method embodiment are executed.

[0147] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application may adopt the form of a computer program product implemented in one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) that include computer-usable program code.

[0148] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0149] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0150] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process in the computer or other programmable device. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0151] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

1. A method for configuring a sounding reference signal (SRS), characterized in that: Applied to network equipment, including: Determine a first SRS resource set and a first SRS base sequence group; wherein the combination of the first SRS resource set and the first SRS base sequence group is one of M*N combinations obtained by permuting and combining M SRS resource sets and N SRS base sequence groups, the M*N combinations correspond to M*N cells one by one, resources of any two SRS resource sets in the M SRS resource sets do not overlap, the M*N cells include a first cell, the combination of the first SRS resource set and the first SRS base sequence group corresponds to the first cell, the M is a positive integer greater than 1, and the N is a positive integer greater than 1; The terminal device in the first cell is configured to send SRS based on the first SRS resource set and the first SRS base sequence group.

2. The method according to claim 1, characterized in that The identifier of the first cell and the identifier of the first SRS resource set satisfy the following relationship: λ=(X+n)mod M; Here, X is the identifier of the first cell, λ is the identifier of the first SRS resource set, and n is an offset.

3. The method according to claim 2, characterized in that The identifier of the first cell and the identifier of the first SRS base sequence group satisfy the following relationship: Wherein, the α is the identifier of the first SRS base sequence group, and p and q are offsets.

4. The method according to claim 2, characterized in that The identifier of the first cell and the identifier of the first SRS base sequence group satisfy the following relationship: Wherein, the α is the identifier of the first SRS base sequence group, and p and q are offsets.

5. The method according to any one of claims 1 to 4, characterized in that: The identifier of the first cell is a physical cell identifier PCI or a transmission reception point TRP identifier or a virtual cell identifier.

6. The method according to any one of claims 1 to 5, characterized in that: The N is a positive integer less than or equal to 30.

7. The method according to any one of claims 1 to 6, characterized in that: The configuring the terminal device in the first cell to send the SRS according to the first SRS resource set and the first SRS base sequence group includes: First SRS configuration information is sent to a first terminal device in the first cell according to the first SRS resource set and the first SRS base sequence group; wherein the first SRS configuration information indicates a first SRS resource and the first SRS base sequence group, and the first SRS resource belongs to the first SRS resource set.

8. A SRS configuration method, characterized in that: A first terminal device applied in a first cell includes: Receive first SRS configuration information from a network device, where the first SRS configuration information indicates a first SRS resource and a first SRS base sequence group; wherein the first SRS resource belongs to a first SRS resource set, a combination of the first SRS resource set and the first SRS base sequence group is one of M*N combinations obtained by permuting and combining M SRS resource sets and N SRS base sequence groups, the M*N combinations correspond to M*N cells one by one, resources of any two SRS resource sets in the M SRS resource sets do not overlap, the M*N cells include the first cell, the combination of the first SRS resource set and the first SRS base sequence group corresponds to the first cell, M is a positive integer greater than 1, and N is a positive integer greater than 1; An SRS is sent on the first SRS resource according to the first SRS base sequence group.

9. The method according to claim 8, characterized in that The identifier of the first cell and the identifier of the first SRS resource set satisfy the following relationship: λ=(X+n)mod M; Here, X is the identifier of the first cell, λ is the identifier of the first SRS resource set, and n is an offset.

10. The method according to claim 9, characterized in that The identifier of the first cell and the identifier of the first SRS base sequence group satisfy the following relationship: Wherein, the α is the identifier of the first SRS base sequence group, and p and q are offsets.

11. The method according to claim 9, characterized in that The identifier of the first cell and the identifier of the first SRS base sequence group satisfy the following relationship: Wherein, the α is the identifier of the first SRS base sequence group, and p and q are offsets.

12. The method according to any one of claims 8 to 11, characterized in that: The identifier of the first cell is a physical cell identifier PCI or a transmission reception point TRP identifier or a virtual cell identifier.

13. The method according to any one of claims 8 to 12, characterized in that: The N is a positive integer less than or equal to 30.

14. A communication device, characterized in that: include: A processing module, used to determine a first SRS resource set and a first SRS base sequence group; wherein the combination of the first SRS resource set and the first SRS base sequence group is one of M*N combinations obtained by permuting and combining M SRS resource sets and N SRS base sequence groups, the M*N combinations correspond to M*N cells one by one, resources of any two SRS resource sets in the M SRS resource sets do not overlap, the M*N cells include a first cell, the combination of the first SRS resource set and the first SRS base sequence group corresponds to the first cell, the M is a positive integer greater than 1, and the N is a positive integer greater than 1; The transceiver module is used to configure the terminal device in the first cell to send SRS based on the first SRS resource set and the first SRS base sequence group.

15. The device according to claim 14, characterized in that The identifier of the first cell and the identifier of the first SRS resource set satisfy the following relationship: λ=(X+n)mod M; Here, X is the identifier of the first cell, λ is the identifier of the first SRS resource set, and n is an offset.

16. The device according to claim 15, characterized in that The identifier of the first cell and the identifier of the first SRS base sequence group satisfy the following relationship: Wherein, the α is the identifier of the first SRS base sequence group, and p and q are offsets.

17. The device according to claim 15, characterized in that The identifier of the first cell and the identifier of the first SRS base sequence group satisfy the following relationship: Wherein, the α is the identifier of the first SRS base sequence group, and p and q are offsets.

18. The device according to any one of claims 14 to 17, characterized in that The identifier of the first cell is a physical cell identifier PCI or a transmission reception point TRP identifier or a virtual cell identifier.

19. The device according to any one of claims 14 to 18, characterized in that: The N is a positive integer less than or equal to 30.

20. The device according to any one of claims 14 to 19, characterized in that The transceiver module is used for: First SRS configuration information is sent to a first terminal device in the first cell according to the first SRS resource set and the first SRS base sequence group; wherein the first SRS configuration information indicates a first SRS resource and the first SRS base sequence group, and the first SRS resource belongs to the first SRS resource set.

21. A communication device, characterized in that: include: A transceiver module, configured to receive first SRS configuration information from a network device, wherein the first SRS configuration information indicates a first SRS resource and a first SRS base sequence group; wherein the first SRS resource belongs to a first SRS resource set, the combination of the first SRS resource set and the first SRS base sequence group is one of M*N combinations obtained by permuting and combining M SRS resource sets and N SRS base sequence groups, the M*N combinations correspond to M*N cells one by one, resources of any two SRS resource sets in the M SRS resource sets do not overlap, the M*N cells include the first cell, the combination of the first SRS resource set and the first SRS base sequence group corresponds to the first cell, and M is a positive integer greater than 1, and N is a positive integer greater than 1; The transceiver module is further configured to send an SRS on the first SRS resource according to the first SRS base sequence group.

22. The device according to claim 21, characterized in that The identifier of the first cell and the identifier of the first SRS resource set satisfy the following relationship: λ=(X+n)mod M; Here, X is the identifier of the first cell, λ is the identifier of the first SRS resource set, and n is an offset.

23. The device according to claim 22, characterized in that The identifier of the first cell and the identifier of the first SRS base sequence group satisfy the following relationship: Wherein, the α is the identifier of the first SRS base sequence group, and p and q are offsets.

24. The device according to claim 22, characterized in that The identifier of the first cell and the identifier of the first SRS base sequence group satisfy the following relationship: Wherein, the α is the identifier of the first SRS base sequence group, and p and q are offsets.

25. The device according to any one of claims 21 to 24, characterized in that The identifier of the first cell is a physical cell identifier PCI or a transmission reception point TRP identifier or a virtual cell identifier.

26. The device according to any one of claims 21 to 25, characterized in that The N is a positive integer less than or equal to 30.

27. A communication device, characterized in that: include: A processor, the processor is coupled to a memory, the memory is used to store programs or instructions, when the program or instructions are executed by the processor, the communication device executes the method as described in any one of claims 1-7, or the communication device executes the method as described in any one of claims 8-13.

28. A computer-readable storage medium, characterized in that: The storage medium stores a computer program or an instruction. When the computer program or the instruction is executed by the communication device, the method according to any one of claims 1 to 7 or the method according to any one of claims 8 to 13 is implemented.

29. A communication system, characterized in that: It comprises the communication device as described in any one of claims 14-20 and the communication device as described in any one of claims 21-26.

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