Communication method and communication apparatus

Abstract

Embodiments of the present application provide a communication method and a communication apparatus, which are applied to the technical field of wireless communications. The method comprises: an access network device sends configuration information of a sounding reference signal (SRS), the configuration information being used for indicating a first frequency domain resource, and the bandwidth corresponding to the first frequency domain resource being greater than 272 resource blocks (RBs); a terminal device receives the configuration information, and sends the SRS on the first frequency domain resource; and the access network device receives the SRS on the first frequency domain resource. Compared with sending an SRS on a frequency domain resource less than 272 RBs, said method can help improve communication performance.

Description

Communication methods and communication devices

[0001] This application claims priority to Chinese Patent Application No. 202411944236.0, filed on December 24, 2024, entitled "Communication Method and Communication Device", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of communication technology, and in particular to a communication method and a communication device. Background Technology

[0003] The sounding reference signal (SRS) is primarily used to estimate uplink channel quality and can be used for uplink scheduling, determining uplink timing advance (TA), and uplink beam management. In time-division duplex (TDD) scenarios where uplink and downlink channels are reciprocal, channel symmetry can be leveraged to further estimate downlink channel quality based on the uplink channel quality estimated by the SRS. Summary of the Invention

[0004] This application provides a communication method and a communication device that can help improve communication performance.

[0005] In a first aspect, embodiments of this application provide a communication method that can be applied to a terminal device, a module in a terminal device, or a logical node, logical module, or software that can implement all or part of the functions of the terminal device.

[0006] The method includes: a terminal device receiving configuration information of a channel sounding reference signal (SRS), the configuration information indicating a first frequency domain resource, the first frequency domain resource being used for SRS transmission, and the bandwidth corresponding to the first frequency domain resource being greater than 272 resource blocks (RB); and the terminal device transmitting the SRS on the first frequency domain resource.

[0007] By implementing the method described in the first aspect, the terminal device can transmit SRS on a first frequency domain resource based on configuration information. Since the bandwidth corresponding to the first frequency domain resource indicated by the configuration information is greater than 272 RBs, the terminal device can transmit SRS on frequency domain resources exceeding 272 RBs. Compared to transmitting SRS on frequency domain resources with fewer than 272 RBs, this method can adapt to the transmission requirements of large bandwidths, which is beneficial for improving communication performance.

[0008] Secondly, embodiments of this application provide another communication method that can be applied to access network devices, modules in access network devices, or logical nodes, logical modules, or software that can implement all or part of the functions of access network devices.

[0009] The method includes: transmitting configuration information of a channel sounding reference signal (SRS), the configuration information indicating a first frequency domain resource, the first frequency domain resource being used for SRS transmission, the bandwidth corresponding to the first frequency domain resource being greater than 272 resource blocks (RB); and receiving the SRS on the first frequency domain resource.

[0010] Implementing the method described in the second aspect, the network device can configure the terminal device to transmit SRS on the first frequency domain resource, and after configuration, the network device can receive SRS on the first frequency domain resource. Since the bandwidth corresponding to the first frequency domain resource indicated by the configuration information is greater than 272 RBs, when the terminal device transmits SRS on a frequency domain resource exceeding 272 RBs, the network device can receive SRS on a frequency domain resource exceeding 272 RBs. Compared to receiving SRS on a frequency domain resource less than 272 RBs, this method can adapt to the transmission requirements of large bandwidths, which is beneficial to improving communication performance.

[0011] In conjunction with the first or second aspect, in one possible implementation, the first frequency domain resource includes at least two frequency domain resource groups; the configuration information is also used to indicate one or more of the following: frequency hopping mode, wherein the frequency hopping mode is to first hop frequency between frequency domain resource groups and then hop frequency within frequency domain resource groups, or, wherein the frequency hopping mode is to first hop frequency within frequency domain resource groups and then hop frequency between frequency domain resource groups; frequency hopping pattern between frequency domain resource groups; and frequency hopping pattern within frequency domain resource groups.

[0012] As can be seen, in this method, the first frequency domain resources can be further divided into at least two frequency domain resource groups. The configuration information instructs the terminal device to transmit SRS by frequency hopping within the entire first frequency domain resources by indicating the frequency hopping method, the frequency hopping pattern between frequency domain resource groups, and the frequency hopping pattern within frequency domain resource groups. For example, if the first frequency domain resource is further divided into two frequency domain resource groups, namely Block1 and Block2, then the terminal device can first transmit SRS in Block1 by frequency hopping according to the configuration information. After all the frequency domain resources corresponding to Block1 have been traversed or the maximum number of SRS transmissions in Block1 has been reached, it can then transmit SRS in Block2 by frequency hopping until all the frequency domain resources corresponding to Block2 have been traversed or the maximum number of SRS transmissions in Block2 has been reached. Alternatively, the terminal device can first transmit SRS in Block1 according to the configuration information, then hop to Block2 to transmit SRS in Block2, then hop to Block1 to transmit SRS in Block1, then hop to Block2 to transmit SRS in Block2, and so on, until all the frequency domain resources corresponding to Block1 have been traversed or the maximum number of SRS transmissions in Block1 has been reached, and all the frequency domain resources corresponding to Block2 have been traversed or the maximum number of SRS transmissions in Block2 has been reached.

[0013] In conjunction with the first or second aspect, in one possible implementation, the frequency hopping pattern between the aforementioned frequency domain resource groups is used to indicate the starting frequency domain resource group for frequency hopping and / or the frequency hopping sequence between frequency domain resource groups.

[0014] As can be seen, in this method, the terminal device can determine the frequency domain resource order of frequency hopping based on the starting frequency domain resource group and / or the frequency hopping order between frequency domain resource groups, thereby realizing SRS frequency hopping transmission between frequency domain resource groups on demand.

[0015] In conjunction with the first or second aspect, in one possible implementation, the frequency hopping pattern within the aforementioned frequency domain resource group is used to indicate one or more of the following: the bandwidth corresponding to the frequency domain resource group, the starting position of the frequency domain resource group, the bandwidth of a single SRS transmission within the frequency domain resource group, the starting position of the first SRS transmission within the frequency domain resource group, the number of SRS transmissions within the frequency domain resource group, the total number of symbols occupied by the SRS, and the number of symbols occupied by a single SRS transmission.

[0016] As can be seen, in this method, the terminal device can determine the frequency domain resource order of frequency hopping according to the frequency hopping pattern in the frequency domain resource group, thereby realizing SRS frequency hopping transmission in the frequency domain resource group on demand.

[0017] In conjunction with the first or second aspect, in one possible implementation, the bandwidth of the aforementioned single transmission of SRS within the frequency domain resource group is determined according to a multiplication factor, which is related to the bandwidth corresponding to the frequency domain resource group.

[0018] As can be seen, in this method, the terminal device can determine the bandwidth of a single SRS transmission within the frequency domain resource group based on the multiplication factor, and the multiplication factor is related to the bandwidth corresponding to the frequency domain resource group. Thus, the configuration information can implicitly indicate the bandwidth of a single SRS transmission within the frequency domain resource group by carrying the multiplication factor or the bandwidth corresponding to the frequency domain resource group, which can further reduce the signaling overhead of the configuration information.

[0019] In conjunction with the first or second aspect, in one possible implementation, if the bandwidth corresponding to the frequency domain resource group is less than or equal to 272 RBs, then the frequency hopping pattern in the frequency domain resource group corresponds to the first SRS bandwidth configuration table; and / or, if the bandwidth corresponding to the frequency domain resource group is greater than 272 RBs, then the frequency hopping pattern in the frequency domain resource group corresponds to the second SRS bandwidth configuration table, which is different from the first SRS bandwidth configuration table.

[0020] As can be seen, in this method, the bandwidth corresponding to the frequency domain resource group can be less than or equal to 272 RBs or greater than 272 RBs, and the patterns in the frequency domain resource group correspond to different SRS bandwidth configuration tables. That is, the patterns in the frequency domain resource group can be configured based on the first SRS bandwidth configuration table and / or the second SRS bandwidth configuration table, so as to achieve flexible SRS bandwidth configuration and meet different bandwidth requirements.

[0021] For example, the first SRS bandwidth configuration table is a traditional SRS bandwidth configuration table; the second SRS bandwidth configuration table is a table with bandwidth extension on the first SRS bandwidth configuration table; or, the second SRS bandwidth configuration table is a table completely different from the first SRS bandwidth configuration table and the maximum bandwidth of a single transmission SRS corresponding to any row in the second SRS bandwidth configuration table is greater than 272 RBs.

[0022] In conjunction with the first or second aspect, in one possible implementation, the above configuration information is further used to indicate the frequency hopping pattern within the first frequency domain resource; the frequency hopping pattern within the first frequency domain resource is used to indicate one or more of the following: the bandwidth of a single SRS transmission within the first frequency domain resource, the starting position of the first SRS transmission within the first frequency domain resource, the number of SRS transmissions within the first frequency domain resource, the total number of symbols occupied by the SRS, and the number of symbols occupied by a single SRS transmission.

[0023] As can be seen, in this method, the configuration information instructs the terminal device to transmit SRS by frequency hopping within the entire first frequency domain resource by indicating the frequency hopping pattern within the first frequency domain resource. This eliminates the need to further divide the first frequency domain resource into frequency domain resource groups, thus avoiding the need to indicate the frequency hopping method, the frequency hopping pattern between frequency domain resource groups, and the frequency hopping pattern within a frequency domain resource group. The terminal device can be instructed to transmit SRS by indicating the frequency hopping pattern within the first frequency domain resource, thereby further reducing the signaling overhead of the configuration information.

[0024] In conjunction with the first or second aspect, in one possible implementation, the bandwidth of a single SRS transmission within the first frequency domain resource is determined according to a multiplication factor, which is related to the bandwidth corresponding to the first frequency domain resource.

[0025] As can be seen, in this method, the terminal device can determine the bandwidth of a single SRS transmission within the first frequency domain resource based on the multiplication factor, and the multiplication factor is related to the bandwidth corresponding to the first frequency domain resource. Thus, the configuration information can implicitly indicate the bandwidth of a single SRS transmission within the first frequency domain resource by indicating the multiplication factor or the bandwidth corresponding to the first frequency domain resource, which helps to save on the signaling overhead of the configuration information.

[0026] Thirdly, embodiments of this application provide a communication device including functional modules for implementing the methods described in any one of the first or second aspects. The communication device may be a terminal device or an access network device, or a module (e.g., a processor, chip, or chip system) within the terminal device or access network device, or a logical node, logical module, or software capable of implementing all or part of the functions of the terminal device or access network device.

[0027] Fourthly, embodiments of this application provide a communication device, which includes a processor and an interface circuit. The interface circuit is used to receive signals from other communication devices and transmit them to the processor, or to send signals from the processor to other communication devices. The processor, through logic circuits or executable code instructions, implements the method as described in any one of the first or second aspects. The communication device may be a terminal device or an access network device, or a module (e.g., a processor, chip, or chip system) within a terminal device or access network device, or a logic node, logic module, or software capable of implementing all or part of the functions of a terminal device or access network device. Furthermore, the communication device may also include a memory, which can be used to store instructions executed by the processor, input data required for the processor to execute instructions, or data generated after the processor executes instructions.

[0028] Fifthly, embodiments of this application provide a computer-readable storage medium storing computer instructions or programs that, when executed by a communication device, implement the method as described in any one of the first or second aspects.

[0029] Sixthly, embodiments of this application provide a computer program product, which includes a computer program or program that, when executed by a communication device, implements the method as described in any one of the first or second aspects. The communication device may be a terminal device or an access network device, or a module (e.g., a processor, chip, or chip system) within the terminal device or access network device, or a logical node, logical module, or software capable of implementing all or part of the functions of the terminal device or access network device.

[0030] In a seventh aspect, embodiments of this application provide a communication system, including a terminal device for performing the method as described in any one of the first aspects and an access network device for performing the method as described in any one of the second aspects.

[0031] The beneficial effects of aspects three through seven can be found in the beneficial effects of aspect one, and will not be repeated here. Attached Figure Description

[0032] Figure 1 is a schematic diagram of the architecture of a communication system 10 provided in an embodiment of this application;

[0033] Figure 2 is a schematic diagram of a unified carrier provided in an embodiment of this application;

[0034] Figure 3 is a schematic diagram of the symbols occupied by SRS in a time slot according to an embodiment of this application;

[0035] Figure 4 is a schematic diagram of an SRS bandwidth provided in an embodiment of this application;

[0036] Figure 5 is a schematic diagram of another SRS bandwidth provided in an embodiment of this application;

[0037] Figure 6 is a schematic diagram of an SRS frequency hopping method provided in an embodiment of this application;

[0038] Figure 7 is a flowchart illustrating a communication method provided in an embodiment of this application;

[0039] Figure 8 is a schematic diagram of another SRS frequency hopping provided in an embodiment of this application;

[0040] Figure 9 is a schematic diagram of another SRS frequency hopping provided in an embodiment of this application;

[0041] Figure 10 is a schematic diagram of the structure of a communication device provided in an embodiment of this application;

[0042] Figure 11 is a schematic diagram of another communication device provided in an embodiment of this application. Detailed Implementation

[0043] Figure 1 is a schematic diagram of the architecture of a communication system 10 provided in an embodiment of this application. As shown in Figure 1, the communication system 10 includes a radio access network (RAN) 100, wherein the RAN 100 includes at least one RAN node (110a and 110b in Figure 1, collectively referred to as 110), and may also include at least one terminal (120a-120j in Figure 1, collectively referred to as 120). The RAN 100 may also include other RAN nodes, such as wireless relay devices and / or wireless backhaul devices (not shown in Figure 1). The terminal 120 is wirelessly connected to the RAN node 110. Terminals and RAN nodes can be interconnected via wired or wireless means. The communication system 10 may also include a core network 200. The RAN node 110 is connected to the core network 200 via wireless or wired means. The core network equipment in the core network 200 and the RAN node 110 in the RAN 100 may be independent and different physical devices, or they may be the same physical device integrating the logical functions of the core network equipment and the logical functions of the RAN node. Communication system 10 may also include Internet 300.

[0044] RAN100 can be an evolved universal terrestrial radio access (E-UTRA) system, a new radio (NR) system, a 6th generation (6G) radio access system, or a future radio access system as defined in the 3rd generation partnership project (3GPP), or it can be a WiFi system. RAN100 can also include two or more of the above-mentioned different radio access systems. RAN100 can also be an open RAN (O-RAN).

[0045] RAN nodes, also known as radio access network devices, RAN entities, or access nodes, are used to help terminals access communication systems wirelessly. In one application scenario, an RAN node can be a base station, an evolved NodeB (eNodeB), a transmission reception point (TRP), a next-generation NodeB (gNB) in a 5G mobile communication system, a next-generation base station in a 6G mobile communication system, a base station in a future mobile communication system, or an access node in a WiFi system. RAN nodes can be macro base stations (as shown in Figure 1, 110a), micro base stations or indoor stations (as shown in Figure 1, 110b), relay nodes, or donor nodes.

[0046] In another application scenario, multiple RAN nodes can collaborate to help terminals achieve wireless access, with different RAN nodes implementing different functions of the base station. For example, a RAN node can be a central unit (CU), a distributed unit (DU), or a radio unit (RU). Here, the CU performs the functions of the base station's Radio Resource Control (RRC) and Packet Data Convergence Protocol (PDCP), and can also perform the functions of the Service Data Adaptation Protocol (SDAP). The DU performs the functions of the base station's Radio Link Control (RANC) and Medium Access Control (MAC) layers, and can also perform some or all of the physical layer functions. For specific descriptions of these protocol layers, refer to the relevant 3GPP technical specifications. The RU can be used to implement radio frequency signal transmission and reception. The CU and DU can be two independent RAN nodes or integrated into the same RAN node, such as within a baseband unit (BBU). The RU can be included in radio frequency equipment, such as in a remote radio unit (RRU) or an active antenna unit (AAU). The CU can be further divided into two types of RAN nodes: CU-control plane and CU-user plane.

[0047] In different systems, RAN nodes may have different names. For example, in an O-RAN system, a CU can be called an open CU (O-CU), a DU can be called an open DU (O-DU), and an RU can be called an open RU (O-RU). The RAN nodes in the embodiments of this application can be implemented through software modules, hardware modules, or a combination of software and hardware modules. For example, a RAN node can be a server loaded with the corresponding software modules. The embodiments of this application do not limit the specific technology or device form used in the RAN nodes. For ease of description, a base station is used as an example of a RAN node in the following description.

[0048] A terminal is a device with wireless transceiver capabilities, capable of sending signals to or receiving signals from a base station. Terminals can also be called terminal equipment, user equipment (UE), mobile station, mobile terminal, etc. Terminals can be widely used in various scenarios, such as device-to-device (D2D), vehicle-to-everything (V2X) communication, machine-type communication (MTC), Internet of Things (IoT), virtual reality, augmented reality, industrial control, autonomous driving, telemedicine, smart grids, smart furniture, smart offices, smart wearables, smart transportation, smart cities, etc. Terminals can be mobile phones, tablets, computers with wireless transceiver capabilities, wearable devices, vehicles, airplanes, ships, robots, robotic arms, smart home devices, etc. The embodiments of this application do not limit the specific technology or device form used in the terminal.

[0049] Base stations and terminals can be fixed or mobile. They can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; they can also be deployed on water; and they can be deployed on aircraft, balloons, and satellites. The embodiments of this application do not limit the application scenarios of the base stations and terminals.

[0050] The roles of base stations and terminals can be relative. For example, the helicopter or drone 120i in Figure 1 can be configured as a mobile base station. For terminals 120j that access the wireless access network 100 through 120i, terminal 120i is a base station; however, for base station 110a, 120i is a terminal, meaning that 110a and 120i communicate via a wireless air interface protocol. Of course, 110a and 120i can also communicate via a base station-to-base station interface protocol. In this case, relative to 110a, 120i is also a base station. Therefore, both base stations and terminals can be collectively referred to as communication devices. 110a and 110b in Figure 1 can be called communication devices with base station functions, and 120a-120j in Figure 1 can be called communication devices with terminal functions.

[0051] Communication between base stations and terminals, between base stations, and between terminals can be conducted using licensed spectrum, unlicensed spectrum, or both simultaneously. Communication can be conducted using spectrum below 6 GHz, spectrum above 6 GHz, or both simultaneously. The embodiments of this application do not limit the spectrum resources used for wireless communication.

[0052] In the embodiments of this application, the functions of the base station can be executed by modules (such as chips) within the base station, or by a control subsystem that includes base station functions. This control subsystem, including base station functions, can be a control center in the aforementioned application scenarios such as smart grids, industrial control, intelligent transportation, and smart cities. Similarly, the functions of the terminal can be executed by modules (such as chips or modems) within the terminal, or by a device that includes terminal functions.

[0053] In this application, the base station sends downlink signals or downlink information to the terminal, with the downlink information carried on the downlink channel; the terminal sends uplink signals or uplink information to the base station, with the uplink information carried on the uplink channel. To communicate with the base station, the terminal needs to establish a radio connection on a cell controlled by the base station. The cell with which the terminal has established a radio connection is called the terminal's serving cell. When the terminal communicates with this serving cell, it is also susceptible to interference from signals from neighboring cells.

[0054] In the embodiments of this application, the time-domain symbol can be an orthogonal frequency division multiplexing (OFDM) symbol or a discrete Fourier transform-spread-OFDM (DFT-s-OFDM) symbol. Unless otherwise specified, the symbols in the embodiments of this application refer to time-domain symbols.

[0055] The following explanations of some terms used in the embodiments of this application are provided to facilitate understanding by those skilled in the art.

[0056] This section is for ease of understanding only and should not be regarded as a disclosure or specific limitation of the technical solution of this application.

[0057] I. Bandwidth Part (BWP)

[0058] A Block-Based Resource (BWP) is defined as a combination of multiple contiguous resource blocks (RBs) within a single carrier. The concept of BWP was introduced primarily to allow terminals to better utilize large carrier bandwidths. For a large carrier bandwidth, such as 100MHz, the bandwidth required by a terminal is often limited. If the terminal were to perform real-time full-bandwidth detection and maintenance, energy consumption would pose a significant challenge. The introduction of the BWP concept allocates a portion of the bandwidth within the entire large carrier for terminal access and data transmission. The terminal only needs to perform corresponding operations within the bandwidth configured by the system.

[0059] II. Carrier aggregation (CA)

[0060] CA (Carrier Aggregation) provides greater bandwidth to a single terminal by aggregating multiple component carriers (CCs). This allows the terminal to enjoy a bandwidth equal to the total bandwidth of all CCs, significantly improving the peak rate. Based on whether the CCs belong to the same frequency band and are continuous in the frequency domain, CA can be categorized as follows: Intra-band contiguous CA: CCs belong to the same frequency band and are continuous in the frequency domain. Intra-band non-contiguous CA: CCs belong to the same frequency band but are not continuous in the frequency domain. Inter-band CA: CCs belong to different frequency bands; in this case, the CCs are usually not continuous in the frequency domain.

[0061] III. Uni-carrier

[0062] Multiple carriers aggregated by CA are managed through multiple control channels, leading to increased complexity in blind decoding of the control channels, increased overhead of downlink control information, and longer carrier activation times. To address these issues, the concept of a unified carrier is proposed, where a unified carrier comprises multiple frequency domain resources. These resources can be multiple carriers, multiple BWPs, frequency domain resources across multiple frequency bands, frequency domain resources across multiple frequencies, multiple non-contiguous frequency domain resources, multiple carriers within the same frequency range, or multiple carriers across multiple frequency ranges. The multiple frequency domain resources included in a unified carrier can be considered as a virtual single carrier (or a logical single carrier). For example, these multiple frequency domain resources may share a single radio frequency channel, and / or, when transmitting signals, they may undergo a large-scale Fast Fourier Transform operation. This allows for unified management of these multiple frequency domain resources by managing a single carrier.

[0063] Optionally, unified carriers can be divided / configured according to frequency bands or frequency domain ranges. For example, as shown in Figure 2, the access network device can configure three unified carriers for the terminal, namely unified carrier 0, unified carrier 1, and unified carrier 2. One unified carrier can correspond to a carrier group (CC group), which includes one or more carriers. Multiple carriers in frequency range 1 (FR1) form unified carrier 0, multiple carriers in frequency range 2 (FR2) form unified carrier 1, and multiple carriers in FR3 form unified carrier 2.

[0064] Optionally, the unified carrier involved in this application may also be referred to as a frequency domain resource set, aggregated carrier, joint carrier, or other names defined by the future network. For example, a Uni-carrier may contain one or more frequency domain resource groups, and the frequency domain resource groups contained in different Uni-carriers may be different from each other or partially the same. For example, a Uni-carrier includes one or more carriers within the same frequency band, or a Uni-carrier includes multiple carriers within multiple frequency bands.

[0065] Optionally, the frequency band in this application may be an operating band already defined by the NR protocol, or it may be a portion of the frequency domain resources within the operating band. A frequency band may refer to a segment of frequency domain resources, which may include continuous resources or discontinuous resources.

[0066] Optionally, a unified carrier may include anchor frequency domain resources and capacity frequency domain resources. The anchor frequency domain resources may have functions including, but not limited to, at least one of the following: camping, receiving paging / low-power wake-up signals (LP-WUS), and sending uplink wake-up signals. Anchor frequency domain resources can also be called coverage frequency domain resources, i.e., frequency domain resources that guarantee the basic coverage performance of the terminal. Capacity frequency domain resources may include, but are not limited to, communication functions, such as sending and receiving service data. For example, as shown in Figure 2, unified carrier 0 includes an anchor carrier and a capacity carrier.

[0067] Optionally, the anchor frequency domain resources and capacity frequency domain resources for a terminal can come from one access network device or from multiple access network devices.

[0068] Optionally, multiple frequency domain resources in a unified carrier can be co-located or non-co-located.

[0069] Optionally, a unified carrier can be divided into a downlink unified carrier and an uplink unified carrier. Alternatively, a unified carrier can include both downlink and uplink frequency domain resources.

[0070] Optionally, a unified carrier can be divided into a transmit unified carrier and a receive unified carrier. Alternatively, a unified carrier can include both transmit frequency domain resources and receive frequency domain resources.

[0071] IV. SRS

[0072] SRS transmission can support {1, 2, 4} antenna ports, or more antenna ports, with port numbers starting from 1000.

[0073] The time-domain resources occupied by SRS are as follows: SRS can be transmitted over {1, 2, 4} consecutive symbols in a time slot, or over more symbols, meaning SRS occupies {1, 2, 4, ...} consecutive symbols in a slot. For example, the starting symbol occupied by SRS in a slot = the total number of symbols in the slot - 1 - offset value, where the offset value can be counted backwards from the last symbol and configured as {0, 1, ..., 5}. For example, Figure 3 is a schematic diagram of the symbols occupied by an SRS in a time slot. When the number of symbols occupied by an SRS in a slot is 1, the offset value can be configured to 2, and the index corresponding to the starting symbol is 11, that is, the SRS occupies the symbol with index 11 in the slot. When the number of symbols occupied by an SRS in a slot is 2, the offset value can be configured to 1, and the index corresponding to the starting symbol is 12, that is, the SRS occupies the symbol with index 12 and the symbol with index 13 in the slot. When the number of symbols occupied by an SRS in a slot is 4, the offset value can be configured to 3, and the index corresponding to the starting symbol is 10, that is, the SRS occupies the symbol with index 10, the symbol with index 11, the symbol with index 12, and the symbol with index 13 in the slot.

[0074] The frequency domain resources occupied by SRS are as follows:

[0075] The bandwidth corresponding to the frequency domain resources occupied by a single transmission SRS (hereinafter referred to as the bandwidth occupied by a single transmission SRS) is an integer multiple of 4 RBs, with a minimum of 4 RBs and a maximum of 272 RBs.

[0076] The location of the frequency domain resources occupied by a single SRS transmission can be calculated using the relative offset value nshift of subcarrier 0 (i.e., Point A) of CRB0. The value of nshift ranges from 0 to 268 and is notified to the terminal by the higher-layer parameter freqDomainShift.

[0077] The following describes the existing SRS bandwidth configuration methods in the communication protocol. Currently, the communication protocol has defined a set of bandwidth types that can be allocated for a single SRS transmission by a terminal within a cell. This set can be represented by Table 1 below:

[0078] Table 1

[0079] The meanings of each parameter in Table 1 are as follows:

[0080] C SRS For SRS bandwidth index, C SRS The value of C ranges from 0 to 63. SRSThis indicates which row in Table 1 to use to configure SRS bandwidth, such as configuring the total bandwidth for SRS transmissions and the bandwidth for a single SRS transmission. For example, when C... SRS Once specified, the total bandwidth for transmitting SRS can be determined from m in Table 1. SRS,0 This indicates that the bandwidth of a single SRS transmission is determined by m in Table 1. SRS,0 m SRS,1 m SRS,2 or m SRS,3 This indicates that, for example, C can be configured for the terminal via c-SRS in the higher-level parameter freqHopping. SRS .

[0081] B SRS For the level of the SRS bandwidth tree, B SRS The value ranges from 0 to 3, B SRS Used to indicate the bandwidth of a single SRS transmission That is, m SRS,0 m SRS,1 m SRS,2 or m SRS,3 For example, the B-SRS configuration for the terminal can be set via the higher-level parameter freqHopping. SRS .

[0082] The value is the bandwidth of a single SRS transmission, expressed in units of the number of RBs.

[0083] The value of is in B SRS The indicated number of leaves at the specified level is relative to a single leaf in the previous level; that is, a single leaf in the previous level can be further subdivided into several leaves in this level. A single leaf can be understood as transmitting one SRS. Wherein, when B... SRS When = 0, When B SRS When it is not 0, For example, when C SRS =9 and B SRS When = 1,

[0084] With C SRS Taking 9 as an example, as shown in Figure 4, the total bandwidth for transmitting SRS is 32 RBs. Assuming a minimum granularity of 4 RBs, these 32 RBs can be divided into 8 blocks, each labeled 0-7; when B SRS =0, the bandwidth of a single SRS transmission is 32 RBs, meaning that one SRS transmission can be performed on the frequency domain resources corresponding to the bandwidths labeled 0-7; when BSRS =1, the bandwidth of a single SRS transmission is 16 RBs, meaning that one SRS can be transmitted on the frequency domain resources corresponding to bandwidths labeled 0-3 or 4-7; when B SRS =2, the bandwidth of a single SRS transmission is 8 RBs, meaning that one SRS can be transmitted on the frequency domain resources corresponding to bandwidths labeled 0-1, 2-3, 4-5, or 6-7; when B SRS =3, the bandwidth of a single SRS transmission is 4 RBs, that is, an SRS can be transmitted once on the frequency domain resources corresponding to the bandwidths labeled 0, 1, 2, 3, 4, 5, 6 or 7.

[0085] Based on the above description, C can be configured for the terminal. SRS and B SRS This indicates the bandwidth of a single SRS transmission by the terminal. However, the frequency position corresponding to the bandwidth of a single SRS transmission by the terminal still needs to be determined by the parameter n. RRC Instructions. Where n RRC The range of values ​​for C SRS The value of n is related to the value of n. Taking Figure 4 as an example, n RRC The value can range from 0 to 7, corresponding to the label of each block when the 32 RBs are divided into 8 blocks. As shown in Figure 5, when B SRS =2 and n RRC When =2, the frequency position corresponding to the bandwidth of a single SRS transmission by the terminal can be the black part in Figure 5, that is, the frequency position corresponding to the bandwidth labeled 2-3.

[0086] It should be understood that if C SRS =63, then according to Table 1 above, the total bandwidth for SRS transmission is 272 RBs. Therefore, taking 4 RBs as the smallest unit, n RRC The value range can be 0-63.

[0087] Optional, in C SRS The total bandwidth for transmitting SRS as indicated can be used to transmit one SRS, or to transmit multiple SRSs via frequency hopping. The bandwidth for a single SRS transmission during frequency hopping is determined by the aforementioned C. SRS and B SRS Joint instructions.

[0088] The frequency hopping transmission method is described below:

[0089] The frequency hopping transmission of SRS can be determined based on one or more of the following: the transmission method, the number of symbols Ns occupied by SRS in a slot, and the repetition factor R.

[0090] Among them, the transmission mode is periodic, aperiodic or semi-static. Periodic means that the terminal periodically transmits SRS after receiving the configuration information of SRS. Aperiodic means that the terminal does not directly transmit SRS after receiving the configuration information of SRS, but transmits SRS only after being further triggered by downlink control information (DCI). Semi-static means that the terminal does not directly transmit SRS after receiving the configuration information of SRS, but periodically transmits SRS only after being further activated by a media access control-control element (MAC CE).

[0091] Exemplarily, Ns = {1, 2, 4}, the repetition factor R = {1, 2, 4}, and R ≤ Ns. Specifically: when R = Ns, intra-slot hopping is not supported; when R = 1, Ns = {2, 4}, intra-slot hopping is performed in units of 1 symbol; when R = 2, Ns = 4, intra-slot hopping is performed in units of 2 symbols.

[0092] Specifically, when the transmission mode is aperiodic, SRS performs intra-slot hopping instead of inter-slot hopping, that is, all hopping is completed once triggered. The specific hopping mode can be referred to as shown in Figure 6, where:

[0093] When R = 1, Ns = 2, intra-slot hopping is performed in units of 1 symbol, occupying a total of 2 symbols, that is, the SRS bandwidth is divided into 2 sub-bands, and a total of 2 symbols are used for hopping to achieve.

[0094] When R = 1, Ns = 4, intra-slot hopping is performed in units of 1 symbol, occupying a total of 4 symbols, that is, the SRS bandwidth is divided into 4 sub-bands, and a total of 4 symbols are used for hopping to achieve.

[0095] When R = 2, Ns = 4, intra-slot hopping is performed in units of 2 symbols, occupying a total of 4 symbols, that is, the SRS bandwidth is divided into 2 sub-bands, and a total of 2 symbols are used for hopping to achieve.

[0096] When the transmission modes are periodic and semi-static, intra-slot hopping or inter-slot hopping can be performed. For example, when Ns = 1 or Ns = R, inter-slot hopping can be performed; when Ns = 2 or 4, and R < Ns, intra-slot hopping and inter-slot hopping can be performed.

[0097] From the above content, it can be seen that according to Table 1, the total bandwidth for transmitting SRS can be configured to be less than or equal to 272 RBs. However, a unified carrier can make the total bandwidth for transmitting SRS larger, even exceeding 272 RBs, by aggregating multiple CCs. Thus, it can be seen that the current SRS configuration method cannot adapt to the characteristics of large bandwidth in the unified carrier scenario, resulting in low communication performance.

[0098] To improve communication performance, embodiments of this application provide a communication method and a communication device.

[0099] The communication method and device will be further described below with reference to the accompanying drawings. It is understood that this application uses terminal equipment and access network equipment as examples to illustrate the interaction, but this application does not limit the entities that can perform the interaction. For example, the method executed by the terminal equipment and access network equipment in this application can also be implemented by the communication / processing module in the terminal equipment and access network equipment, or by the circuits or chips responsible for communication / processing functions in the terminal equipment and access network equipment, or by logic nodes, logic modules, or software that can implement all or part of the functions of the terminal equipment and access network equipment.

[0100] Optionally, the solution in this application can be applied to communication between terminal devices and access network devices, or to communication between terminal devices, or to communication between access network devices; this application does not limit this.

[0101] Please refer to Figure 7, which is a flowchart illustrating a communication method provided in an embodiment of this application, wherein:

[0102] 701. The access network device sends SRS configuration information to the terminal device. The configuration information indicates the first frequency domain resource, which is used for SRS transmission. The bandwidth corresponding to the first frequency domain resource is greater than 272 RBs. Accordingly, the terminal device receives the configuration information.

[0103] 702. The terminal device sends an SRS to the access network device on the first frequency domain resource. Correspondingly, the access network device receives the SRS on the first frequency domain resource.

[0104] In one possible implementation, configuration information is carried in a radio resource control (RRC) message.

[0105] In one possible implementation, the first frequency domain resource indicated by the configuration information may be determined based on a uniform carrier.

[0106] For example, the first frequency domain resource may include all frequency domain resources in a uniform carrier.

[0107] Alternatively, the first frequency domain resource may include a portion of the frequency domain resources within the unified carrier. For example, the frequency domain resources corresponding to the unified carrier can be grouped to obtain multiple frequency domain resource groups, and the first frequency domain resource is at least one of these multiple frequency domain resource groups. The unified carrier and / or the first frequency domain resource may be pre-defined by the protocol, or configured to the terminal device by the access network equipment in advance through direct or indirect means.

[0108] In one possible implementation, the configuration information is used to indicate the specific manner in which the first frequency domain resource is located, including: the configuration information indicating the starting position of the first frequency domain resource and / or the bandwidth corresponding to the first frequency domain resource.

[0109] The starting position of the first frequency domain resource refers to the lowest frequency position of the first frequency domain resource. For example, the starting position of the first frequency domain resource can be indicated by the offset value of the starting position of the first frequency domain resource relative to CRB0.

[0110] The bandwidth corresponding to the first frequency domain resource refers to the frequency range occupied by the first frequency domain resource. For example, the frequency range occupied by one RB is equal to the frequency range occupied by 12 subcarriers, and the bandwidth corresponding to the first frequency domain resource can be indicated by the number of RBs.

[0111] Optionally, the configuration information may also be used to instruct the terminal device not to perform frequency hopping transmission of SRS on the first frequency domain resource, or to instruct the terminal device to transmit SRS once on the first frequency domain resource. In this case, the configuration information may indicate the bandwidth of this SRS transmission and the symbols occupied by this SRS transmission. The bandwidth of this SRS transmission is less than or equal to the bandwidth corresponding to the first frequency domain resource.

[0112] Optionally, the configuration information is also used to instruct the terminal device to transmit SRS via frequency hopping on the first frequency domain resource.

[0113] The following describes the indication methods for frequency hopping transmission (SRS), including but not limited to Method 1 and Method 2:

[0114] Method 1: The first frequency domain resource includes at least two frequency domain resource groups, instructing the terminal device to transmit SRS in frequency hopping within these frequency domain resource groups.

[0115] In this approach, the first frequency domain resources are first grouped, and then the obtained grouping is used to instruct frequency hopping transmission of SRS on the first frequency domain resources.

[0116] Optionally, the terminal device may determine, based on the configuration information, at least two frequency domain resource groups included in the first frequency domain resource.

[0117] For example, the configuration information may also indicate the starting position and / or corresponding bandwidth of the frequency domain resource group. In this way, the terminal device can determine the frequency domain resource group by its starting position and / or bandwidth.

[0118] Alternatively, the configuration information can also indicate at least two frequency domain resource groups included in the first frequency domain resource based on the configuration information of the unified carrier. For example, if a frequency domain resource group included in the first frequency domain resource corresponds to a carrier in the unified carrier, or corresponds to a BWP in the unified carrier, then the configuration information can indicate these frequency domain resource groups by indicating the carrier or BWP corresponding to the frequency domain resource group included in the first frequency domain resource, such as carrying the identifier of the carrier or BWP corresponding to these frequency domain resource groups, so that the terminal device can determine these frequency domain resource groups according to the configuration information.

[0119] The configuration information indicates that the terminal device transmits SRS via frequency hopping on the first frequency domain resource in the following specific manner: the configuration information indicates one or more of the following: frequency hopping mode, frequency hopping pattern between frequency domain resource groups, and frequency hopping pattern within frequency domain resource groups.

[0120] In one possible implementation, the frequency hopping method is to first hop between frequency domain resource groups and then hop within frequency domain resource groups, referred to as scheme1; or, the frequency hopping method is to first hop within frequency domain resource groups and then hop between frequency domain resource groups, referred to as scheme2.

[0121] Assuming the frequency domain resources included in the first frequency domain resource are represented as Blocks, then scheme 1 refers to: first transmitting SRS in each Block for the first time, then transmitting SRS in each Block for the second time, then transmitting SRS in each Block for the third time, and so on, until all frequency domain resources in all Blocks have been traversed, or the maximum number of SRS transmissions in all blocks has been reached. Scheme 2 refers to: first transmitting SRS once or more in a Block to traverse all frequency domain resources in that Block, or reaching the maximum number of SRS transmissions in that Block, then transmitting SRS once or more in another different Block to traverse all frequency domain resources in that Block, or reaching the maximum number of SRS transmissions in that Block, and so on, until all frequency domain resources in all Blocks have been traversed, or the maximum number of SRS transmissions in all blocks has been reached.

[0122] Optionally, the frequency hopping method can be determined based on one or more of the following: service type, data packet size, and the RF bandwidth capability of the terminal device. Here, service type refers to the type of uplink service, and data packet refers to the data packet of that uplink service. The RF bandwidth capability of the terminal device includes, but is not limited to, the RF bandwidth of the terminal device and RF handover latency. The RF bandwidth capability of the terminal device can also be described as: the channel bandwidth capability of the terminal device or the maximum channel bandwidth supported by the terminal device.

[0123] For example, the first frequency domain resource includes frequency domain resource groups from Block 0 to Block 3, with the frequencies of Block 0 to Block 3 increasing sequentially. If the RF bandwidth of the terminal device covers Block 0 to Block 3, then the terminal device does not need to perform RF switching when transmitting SRS in different blocks from Block 0 to Block 3. However, if the RF bandwidth of the terminal device does not completely cover Block 0 to Block 3, such as covering only one block from Block 0 to Block 3 each time, then the terminal device needs to perform RF switching when transmitting SRS in different blocks from Block 0 to Block 3, resulting in RF switching delay for the terminal device.

[0124] For example, when the service type or packet size indicates that transmitting data packets requires the use of multiple frequency domain resource groups, the frequency hopping method can be selected as scheme 1, which prioritizes frequency hopping between frequency domain resource groups. This allows the access network device to quickly obtain a relatively coarse channel state of multiple frequency domain resource groups, and thus quickly select the frequency domain resource group with better channel state for transmitting uplink service data packets based on this relatively coarse channel state. Conversely, when the service type or packet size indicates that transmitting data packets requires the use of one frequency domain resource group, the frequency hopping method can be selected as scheme 2, which prioritizes frequency hopping within a frequency domain resource group. This allows the access network device to quickly obtain a more accurate channel state of a single frequency domain resource, and thus quickly select the frequency domain resource group with better channel state for transmitting uplink service data packets based on this more accurate channel state.

[0125] For example, when the terminal's radio frequency (RF) capability is poor, such as RF bandwidth being less than a first threshold and / or RF handover delay being greater than a second threshold, then frequency hopping scheme 2 can be selected, which prioritizes frequency hopping within a frequency domain resource group. This allows the access network device to quickly obtain a relatively accurate channel state for a frequency domain resource group, avoiding the RF handover delay caused by multiple RF handovers. Based on this more accurate channel state, the device can then quickly select a frequency domain resource group with better channel state to transmit uplink service data packets. Conversely, when the terminal's RF bandwidth capability is good, such as RF bandwidth being greater than the first threshold and / or RF handover delay being less than the second threshold, then frequency hopping scheme 1 can be selected, which prioritizes frequency hopping between frequency domain resource groups. This allows the access network device to quickly obtain a relatively coarse channel state from multiple frequency domain resource groups, and based on this coarse channel state, quickly select a frequency domain resource group with better channel state to transmit uplink service data packets.

[0126] In one possible implementation, the frequency hopping pattern between frequency domain resource groups is used to indicate the starting frequency domain resource group for frequency hopping and / or the frequency hopping order between frequency domain resource groups.

[0127] In the first example, when a starting frequency domain resource group for frequency hopping is specified, the terminal device can start from the specified starting frequency domain resource group and perform frequency hopping between frequency domain resource groups in ascending or descending order of frequency. This order can be pre-defined by the protocol, pre-configured by the access network device for the terminal device, or selected by the terminal device itself; this embodiment does not limit this. If the terminal device selects the order itself, it needs to inform the access network device of the frequency hopping order before executing step 702.

[0128] For example, the first frequency domain resource includes frequency domain resource groups from Block 0 to Block 3, with frequencies increasing sequentially from Block 0 to Block 3. The starting frequency domain resource group for frequency hopping is Block 0, and the order is from low to high frequency. When the frequency hopping method involves first hopping between frequency domain resource groups and then hopping within a frequency domain resource group, the SRS can be transmitted sequentially in Block 0, Block 1, Block 2, and Block 3 for the first time, then in Block 0, Block 1, Block 2, and Block 3 for the second time, then in Block 0, Block 1, Block 2, and Block 3 for the third time, and so on. This indicates that the frequency domain resources in Blocks 0 to 3 have been traversed, or that the frequency hopping in Blocks 0 to 3 has been completed. Maximum number of SRS transmissions: When the frequency hopping mode is intra-frequency hopping within a frequency domain resource group, and then inter-frequency hopping between frequency domain resource groups, SRS can be transmitted once or multiple times in Block 0 until the frequency domain resources in Block 0 are exhausted, or the maximum number of SRS transmissions in Block 0 is reached. Then, SRS can be transmitted once or multiple times in Block 1 until the frequency domain resources in Block 1 are exhausted, or the maximum number of SRS transmissions in Block 1 is reached. Then, SRS can be transmitted once or multiple times in Block 2 until the frequency domain resources in Block 2 are exhausted, or the maximum number of SRS transmissions in Block 2 is reached. Then, SRS can be transmitted once or multiple times in Block 3 until the frequency domain resources in Block 3 are exhausted, or the maximum number of SRS transmissions in Block 3 is reached.

[0129] For example, the starting frequency domain resource group for frequency hopping can be indicated by the index of that group. In the example above, if the starting frequency domain resource group for frequency hopping is Block0 and the index is 0, then the configuration information can carry that index.

[0130] In the second example, when the frequency hopping order between frequency domain resource groups is specified, the terminal device can perform frequency hopping between frequency domain resource groups according to the specified frequency hopping order. Optionally, the frequency hopping order here can also implicitly indicate the starting frequency domain resource group for frequency hopping.

[0131] For example, the frequency hopping order between frequency domain resource groups can be indicated by the index order of the frequency domain resource groups. For Blocks 0 to 3, with indices 0 to 3, there are 24 possible index sequences: 0→1→2→3, 0→1→3→2, 0→2→1→3, 0→2→3→1, 0→3→2→1, 0→3→1→2, 1→2→3→0, 1→3→2→0, 1→3→0→2, 1→0→2→3, 1→0→3→2, 1→2→0→3, 2→3→0→1, 2→0→1→3, 2→1→3→0, 2→3→1→0, 2→1→0→3, 2→0→3→1, 3→0→1→2, 3→2→0→1, 3→0→2→1, 3→1→0→2, 3→2→1→0, 3→1→2→0. Configuration information can carry any of these 24 index sequences.

[0132] Alternatively, for example, an index order can be viewed as a pattern, and the frequency hopping order between frequency domain resource groups can be indicated by the pattern index corresponding to the index order of the frequency domain resource groups. For example, the index orders in the above 24 can be represented by a pattern index occupying 5 bits, such as 00000 to 10111, where 00000 corresponds to 0→1→2→3, 00001 corresponds to 0→1→3→2, ..., and 10111 corresponds to 3→1→2→0. Then the configuration information can carry any one of 00000 to 10111. It should be understood that the mapping relationship between the index order and the pattern index can be predefined by the protocol or pre-configured by the access network device to the terminal device; this application does not limit this.

[0133] In the third example, when the starting frequency domain resource group and the frequency hopping order between frequency domain resource groups are specified, the terminal device can perform frequency hopping between frequency domain resource groups starting from the specified starting frequency domain resource group in accordance with the specified frequency hopping order.

[0134] In one possible implementation, the frequency hopping pattern within the frequency domain resource group is used to indicate one or more of the following: the bandwidth corresponding to the frequency domain resource group, the starting position of the frequency domain resource group, the bandwidth of a single SRS transmission within the frequency domain resource group, the starting position of the first SRS transmission within the frequency domain resource group, the number of SRS transmissions within the frequency domain resource group, the total number of symbols occupied by the SRS, and the number of symbols occupied by a single SRS transmission.

[0135] The starting position of a frequency domain resource group refers to the lowest frequency position of that group. For example, it can be indicated by an offset value relative to the starting position of CRB0 or ​​the first frequency domain resource.

[0136] The total number of symbols occupied by the SRS refers to all symbols occupied by the SRS in a single transmission within the frequency domain resource group. The number of symbols occupied by a single transmission of the SRS refers to the symbols occupied by the SRS in a single transmission within the frequency domain resource group, and the symbols occupied by a single transmission of the SRS are {1, 2, 4, ...}. The total number of symbols occupied by the SRS and the number of symbols occupied by a single transmission of the SRS can be indicated by one or more of the following: the slot occupied by the SRS, the starting symbol occupied by the SRS in the slot, and the repetition factor. Optionally, if the frequency hopping between frequency domain resource groups involves radio frequency handover, the frequency hopping pattern within the frequency domain resource group is also used to indicate the interval of the slot / symbol corresponding to the radio frequency handover, and this interval is greater than or equal to the radio frequency handover delay. This ensures that the terminal device can successfully perform frequency hopping between frequency domain resource groups through radio frequency handover.

[0137] The starting position of the first SRS transmission within a frequency domain resource group refers to the lowest frequency position at which the first SRS transmission occurs within that frequency domain resource group. Optionally, the starting position of the first SRS transmission within a frequency domain resource group can be indicated by an offset value relative to CRB0, the starting position of the first frequency domain resource, or the starting position of the frequency domain resource group, etc. Alternatively, the starting position of the first SRS transmission within a frequency domain resource group can be indicated by the frequency position corresponding to the bandwidth of the first SRS transmission. There may be one or more frequency positions corresponding to the bandwidth of a single SRS transmission within the frequency domain resource group, and different frequency positions corresponding to different bandwidths may have different indications. This can be configured using the corresponding descriptions in any of the following methods 1 to 3.

[0138] The bandwidth corresponding to a frequency domain resource group refers to the frequency range occupied by the frequency domain resource group. The bandwidth of a frequency domain resource group can be understood as the total bandwidth of SRS transmission, the total bandwidth of SRS frequency hopping transmission, and the bandwidth range of SRS frequency hopping within that frequency domain resource group. Optionally, the bandwidth corresponding to a frequency domain resource group can be less than or equal to 272 RBs, or greater than 272 RBs. The bandwidth of a single SRS transmission within a frequency domain resource group refers to the frequency range occupied by a single SRS transmission. For example, these bandwidths can be indicated by the number of RBs. The number of SRS transmissions within a frequency domain resource group can be obtained by dividing the bandwidth corresponding to the frequency domain resource group by the bandwidth of a single SRS transmission within the frequency domain resource group. For example, if the bandwidth corresponding to the frequency domain resource group is 68 RBs, and the bandwidth of a single SRS transmission within the frequency domain resource group is 4 RBs, then the number of SRS transmissions within the frequency domain resource group is 68 / 4 = 17.

[0139] Specifically, the bandwidth corresponding to the frequency domain resource group and the bandwidth of a single SRS transmission within the frequency domain resource group can be configured based on at least one of the following methods 1 to 4:

[0140] Among them, at least one of the methods 1 to 4 can be implemented based on the SRS bandwidth configuration table. The SRS bandwidth configuration table is predefined by the protocol or pre-configured by the access network device to the terminal device. The SRS bandwidth configuration table involved in the embodiments of this application is introduced below:

[0141] First SRS Bandwidth Configuration Table: The first SRS bandwidth configuration table is the existing SRS bandwidth configuration table in the communication standard, namely Table 1 above.

[0142] Second SRS bandwidth configuration table:

[0143] Optionally, the second SRS bandwidth configuration table is completely different from the first SRS bandwidth configuration table, and the m value in any row of the second SRS bandwidth configuration table is different. SRS,0 Greater than 272 RBs.

[0144] For example, m SRS,0 The value of m can be greater than 272 and is an integer multiple of 4. For example, m SRS,0 = 272 + 4*m. Where m is a positive integer, m... SRS,0 The values ​​can be 276, 280, 284, 288, 292, 296, 300, 304, 308, 312, 316, 320, 340, 380, 400, 420, 440, or 480, etc.

[0145] Assume m SRS,0 The value of is specified, then the remaining parameters of each row satisfy the following formula:

[0146] For example, B SRS It can take values ​​from 0 to 3 according to existing communication protocols, or it can include more values.

[0147] Optional, and The following formula applies between them:

[0148] The following table shows a second SRS bandwidth configuration table that satisfies the above two formulas in this alternative approach, as shown in Table 2:

[0149] Table 2

[0150] Optionally, the second SRS bandwidth configuration table is a table that extends the bandwidth based on the first SRS bandwidth configuration table, and m in the second SRS bandwidth configuration table SRS,0 The minimum value is 4, and the maximum value is greater than 272, in m SRS,0If the value of is specified, the remaining parameters in each row of the second SRS bandwidth configuration table still satisfy the above two formulas.

[0151] The following table shows a second SRS bandwidth configuration table that satisfies the formula in this method, as shown in Table 3:

[0152] Table 3

[0153] It should be understood that Tables 1 to 3 above may be pre-defined by the protocol or pre-configured by the access network equipment to the terminal equipment, and this application does not limit this.

[0154] Based on the above, methods 1 to 4 are described below:

[0155] Method 1:

[0156] If the bandwidth of all frequency domain resource groups within the first frequency domain resource is less than or equal to 272 RBs, then the bandwidth of the frequency domain resource group indicated by the frequency hopping pattern within the frequency domain resource group and the bandwidth of a single SRS transmission within the frequency domain resource group correspond to the first SRS bandwidth configuration table.

[0157] The bandwidth corresponding to the frequency domain resource group and the bandwidth of a single SRS transmission within the frequency domain resource group, as defined in the first SRS bandwidth configuration table, can be understood as: configuring the bandwidth corresponding to the frequency domain resource group and the bandwidth of a single SRS transmission within the frequency domain resource group according to the first SRS bandwidth configuration table, or determining the bandwidth corresponding to the frequency domain resource group and the bandwidth of a single SRS transmission within the frequency domain resource group according to the first SRS bandwidth configuration table.

[0158] For example, it can be based on C in Table 1 SRS Configure the bandwidth corresponding to the frequency domain resource group as m SRS,0 According to C in Table 1 SRS And B SRS The bandwidth configured for a single SRS transmission within the frequency domain resource group is Alternatively, it can be based on C in Table 1. SRS and n RRC Configure the frequency position corresponding to the bandwidth of a single SRS transmission within the frequency domain resource group. RRC The value is determined according to C in Table 1. SRS The indicated m SRS,0 Confirm. For details on how to confirm, please refer to the corresponding content in Figure 5.

[0159] Method 2:

[0160] If the bandwidth of all frequency domain resource groups within the first frequency domain resource is greater than 272 RBs, then the bandwidth of the frequency domain resource group indicated by the frequency hopping pattern within the frequency domain resource group and the bandwidth of a single SRS transmission within the frequency domain resource group correspond to the second SRS bandwidth configuration table.

[0161] The bandwidth corresponding to the frequency domain resource group and the bandwidth of a single SRS transmission within the frequency domain resource group, as defined in the second SRS bandwidth configuration table, can be understood as: configuring the bandwidth corresponding to the frequency domain resource group and the bandwidth of a single SRS transmission within the frequency domain resource group according to the second SRS bandwidth configuration table, or determining the bandwidth corresponding to the frequency domain resource group and the bandwidth of a single SRS transmission within the frequency domain resource group according to the second SRS bandwidth configuration table.

[0162] For example, C can be used as a reference in Table 2 or Table 3. SRS Configure the bandwidth corresponding to the frequency domain resource group as m SRS,0 According to C in Table 2 or Table 3 SRS And B SRS The bandwidth configured for a single SRS transmission within the frequency domain resource group is Optionally, C can also be used according to Table 2 or Table 3. SRS and n RRC Configure the frequency position corresponding to the bandwidth of a single SRS transmission within the frequency domain resource group. RRC The value is determined according to C in Table 2 or Table 3. SRS The indicated m SRS,0 Confirm. For details on how to confirm, please refer to the corresponding content in Figure 5.

[0163] Method 3:

[0164] Within the first frequency domain resource, there are one or more frequency domain resource groups with a bandwidth greater than 272 RBs, such as the first frequency domain resource group, and one or more other frequency domain resource groups with a bandwidth less than or equal to 272 RBs, such as the second frequency domain resource group.

[0165] Optionally, the frequency hopping pattern in the first frequency domain resource group corresponds to Table 2 or Table 3 above. That is, the bandwidth corresponding to the first frequency domain resource group indicated by the frequency hopping pattern in the first frequency domain resource group and the bandwidth of a single SRS transmission in the first frequency domain resource group are configured according to Table 2 or Table 3 above, or the bandwidth corresponding to the first frequency domain resource group indicated by the frequency hopping pattern in the first frequency domain resource group and the bandwidth of a single SRS transmission in the first frequency domain resource group are determined according to Table 2 or Table 3 above. The frequency hopping pattern in the second frequency domain resource group corresponds to Table 1 or Table 3 above. That is, the bandwidth corresponding to the second frequency domain resource group indicated by the frequency hopping pattern in the second frequency domain resource group and the bandwidth of a single SRS transmission in the second frequency domain resource group are configured according to Table 1 or Table 3 above, or the bandwidth corresponding to the second frequency domain resource group indicated by the frequency hopping pattern in the second frequency domain resource group and the bandwidth of a single SRS transmission in the second frequency domain resource group are determined according to Table 1 or Table 3 above.

[0166] For example, C can be used as a reference in Table 2 or Table 3. SRS Configure the bandwidth corresponding to the first frequency domain resource group to be m SRS,0 According to C in Table 2 or Table 3 SRS And B SRS The bandwidth of a single SRS transmission configured within the first frequency domain resource group is Optionally, C can also be used according to Table 2 or Table 3. SRS and n RRC Configure the frequency position corresponding to the bandwidth of a single SRS transmission within the first frequency domain resource group; n RRC The value is determined according to C in Table 2 or Table 3. SRS The indicated m SRS,0 Confirmation is complete; the specific confirmation method can be found in the corresponding content of Figure 5. It can be based on C in Table 1 or Table 3. SRS Configure the bandwidth corresponding to the second frequency domain resource group to be m SRS,0 According to C in Table 1 or Table 3 SRS And B SRS The bandwidth of a single SRS transmission configured within the second frequency domain resource group is Optionally, C can also be used according to Table 1 or Table 3. SRS and n RRC Configure the frequency position corresponding to the bandwidth of a single SRS transmission within the second frequency domain resource group. RRC The value of C is determined according to Table 1 or Table 3. SRS The indicated m SRS,0 Confirm. For details on how to confirm, please refer to the corresponding content in Figure 5.

[0167] Method 4: Methods 1 and 3 above can also be replaced by Method 4:

[0168] Among them, the bandwidth of a single SRS transmission within the frequency domain resource group corresponds to the first SRS bandwidth configuration table and the multiplication factor.

[0169] The bandwidth of a single SRS transmission within a frequency domain resource group, corresponding to the first SRS bandwidth configuration table and the multiplier factor, can be understood as: configuring the bandwidth of a single SRS transmission within a frequency domain resource group according to the first SRS bandwidth configuration table and the multiplier factor, or determining the bandwidth of a single SRS transmission within a frequency domain resource group according to the first SRS bandwidth configuration table and the multiplier factor.

[0170] Optionally, the multiplier factor is related to the bandwidth corresponding to the frequency domain resource group. For example, the multiplier factor S is related to N. BLock.BWP Related, N BLock.BWP Based on the bandwidth N corresponding to the frequency domain resource group BLock.BWP_initial Determine S and N BLock.BWP The relationship between them can be referred to by the following formula:

[0171] Where, N ref For reference bandwidth, N ref Greater than or equal to 4 and less than or equal to 272, and N ref It is an integer multiple of 4; N bLock.BWP For greater than N ref And it is an integer multiple of 4. For N BLock.BWP / N ref The value is rounded down. For N BLock.BWP / N ref Round up.

[0172] For example, N ref If the value is 272, then S and N BLock.BWP The relationship between them can be further expressed by the following formula:

[0173] in, For N BLock.BWP The value of / 272 is rounded down. For N BLock.BWP / 272 is rounded up. Taking rounding up as an example, when N... BLock.BWP When 272 < 272, S = 1; when 272 ≤ N, S = 1. BLock.BWP When N < 544, S = 2, and so on. Taking rounding down as an example, when N... BLock.BWP When 272 < 272, S = 0; when 272 ≤ N, S = 0. BLock.BWP When S < 544, S = 1, and so on.

[0174] Optionally, if the bandwidth N corresponding to the frequency domain resource group BLock.BWP_initial If N is an integer multiple of 4, thenBLock.BWP The value is N BLock.BWP_initial The value of N. For example, if N BLock.BWP_initial =280, then N can be determined. BLock.BWP It is 280.

[0175] Optional, if N BLock.BWP_initial If N is not a multiple of 4, then we can round down to the nearest integer multiple of 4 to determine N. BLock.BWP For example, if N BLock.BWP_initial =282, then N can be determined. BLock.BWP It is 280.

[0176] For example, N BLock.BWP_initial With N BLock.BWP The relationship between them can be expressed by the following formula:

[0177] in, Indicates N BLock.BWP_initial / 4 is rounded down.

[0178] In the first example, the configuration information includes S and C from Table 1. SRS B SRS In this way, the terminal device can first determine the C value from the configuration information. SRS B SRS And as determined in Table 1 Then according to The S in the configuration information determines the bandwidth of a single SRS transmission within the frequency domain resource group.

[0179] Taking rounding up as an example, the terminal device can determine the bandwidth of a single SRS transmission within the frequency domain resource group as... For example, S = 1 (e.g., N) ref =272, N BLock.BWR When S = 32, C = 1. SRS =9, B SRS =1, then the terminal device can be determined by referring to Table 1. Then determine For example, S = 2 (e.g., N) ref =272, N BLock.BWP When S = 320, C = 2. SRS =9, B SRS =1, then the terminal device can be determined by referring to Table 1. Then determine

[0180] Taking rounding down as an example, the terminal device can determine the bandwidth of a single SRS transmission within the frequency domain resource group as follows: For example, S = 0 (e.g., N) ref =272, N BLock.BWPWhen S=0, C = 32. SRS =9, B SRS =1, then the terminal device can be determined by referring to Table 1. Then determine For example, S=1 (e.g., N) ref =272, N BLock.BWP When S = 320, C = 1. SRS =9, B SRS =1, then the terminal device can be determined by referring to Table 1. Then determine

[0181] Optionally, in this example, when N BLock.BWP_initial When the value is less than or equal to 272 and is a multiple of 4, the configuration information can also be found in Table 1 above, under C. SRS The indicated m SRS,0 Instruction N BLock.BWP_initial For example, for rounding up, when S=1 in the configuration information, N BLock.BWP_initial C can be configured in the configuration information SRS The indicated m SRS,0 For rounding down, when S=0 in the configuration information, N BLock.BWP_initial C can be configured in the configuration information SRS The indicated m SRS,0 .

[0182] Optionally, in this example, when N BLock.BwP_initial Greater than 272, or, N BLock.BWP_initial When the value is less than or equal to 272, the configuration information may also include N. BLock.BWP_initial .

[0183] In the second example, the configuration information includes N BLock.BWP_initial and C in Table 1 SRS B SRS In this way, the terminal device can use the C configuration information. SRS B SRS And as determined in Table 1 According to N in the configuration information BLock.BWP_initial Determine N BLock.BWP Then according to N BLock.BWP and N ref Determine S, then based on S and Determine the bandwidth for a single SRS transmission within the frequency domain resource group.

[0184] Taking rounding up as an example, the terminal device can determine the bandwidth of a single SRS transmission within the frequency domain resource group as... such as N ref =272, N BLock.BWP_initial=32, C SRS =9, B SRS =1, then the terminal device can be determined by referring to Table 1. Sure Sure Therefore, it can be determined For example, N ref =272, N BLock.BWP_initial =322, C SRS =9, B SRS =1, then the terminal device can be determined by referring to Table 1. Sure Sure Therefore, it can be determined

[0185] Taking rounding down as an example, the terminal device can determine the bandwidth of a single SRS transmission within the frequency domain resource group as follows: such as N ref =272, N BLock.BWP_initial =32, C SRS =9, B SRS =1, then the terminal device can be determined by referring to Table 1. Sure Sure Therefore, it can be determined For example, N ref =272, N BLock.BWP_initial =322, C SRS =9, B SRS =1, then the terminal device can be determined by referring to Table 1. Sure Sure Therefore, it can be determined

[0186] In the third example, the configuration information includes N BLock.BWP and C in Table 1 SRS B SRS In this way, the terminal device can use the C configuration information. SRS B SRS Sure According to N ref And N in the configuration information BLock.BWP Determine S, then based on S and Determine the bandwidth for a single SRS transmission within the frequency domain resource group.

[0187] Taking rounding up as an example, the terminal device can determine the bandwidth of a single SRS transmission within the frequency domain resource group as... such as N ref =272, N BLock.BWP =32, CSRS =9, B SRS =1, then the terminal device can be determined by referring to Table 1. Sure Therefore, it can be determined For example, N ref =272, N BLock.BWP =320, C SRS =9, B SRS =1, then the terminal device can be determined by referring to Table 1. Sure Therefore, it can be determined

[0188] Taking rounding down as an example, the terminal device can determine the bandwidth of a single SRS transmission within the frequency domain resource group as follows: such as N ref =272, N BLock.BWP =32, C SRS =9, B SRS =1, then the terminal device can be determined by referring to Table 1. Sure Therefore, it can be determined For example, N ref =272, N BLock.BWP =320, C SRS =9, B SRS =1, then the terminal device can be determined by referring to Table 1. Sure Therefore, it can be determined

[0189] Optionally, in this example, when N BLock.BWP_initial When the value is less than or equal to 272 and is a multiple of 4, the configuration information can also be found in Table 1 above, under C. SRS The indicated m SRS,0 Instruction N BLock.BWP_initial And / or, optionally, in this example, when N BLock.BWP_initial When the value is greater than 272, or less than or equal to 272, the configuration information may also include N. BLock.BWP_initial For details, please refer to the implementation method in the first example above, which will not be elaborated here.

[0190] Based on method 4, the terminal device can determine the bandwidth corresponding to the frequency domain resource group indicated by the frequency hopping pattern within the frequency domain resource group and the bandwidth of a single SRS transmission within the frequency domain resource group through the first SRS bandwidth configuration table and the multiplication factor. This method does not introduce a new SRS bandwidth configuration table and is applicable to cases where the bandwidth corresponding to the frequency domain resource group is greater than 272 RBs, effectively improving communication performance.

[0191] Optionally, when the configuration information indicates the bandwidth corresponding to the frequency domain resource group and the bandwidth of a single SRS transmission within the frequency domain resource group through at least one of the methods 1 to 4 described above, it can also indicate the index of the SRS bandwidth configuration table used. In this way, when the terminal device receives the configuration information, it can accurately determine the frequency hopping pattern within the frequency domain resource group based on the corresponding SRS bandwidth configuration table.

[0192] Optionally, the configuration information can jointly indicate the frequency hopping pattern of groups within different frequency domain resources, or indicate the frequency hopping pattern of groups within different frequency domain resources separately.

[0193] For example, if all frequency domain resource groups included in the first frequency domain resource have the same bandwidth, the same bandwidth for a single SRS transmission within all frequency domain resource groups, the same number of SRS transmissions within all frequency domain resource groups, the same total number of symbols occupied by SRS within all frequency domain resource groups, and / or the same number of symbols occupied by a single SRS transmission within all frequency domain resource groups, then the configuration information can indicate the bandwidth corresponding to a frequency domain resource group, the bandwidth for a single SRS transmission within a frequency domain resource group, the number of SRS transmissions within a frequency domain resource group, the total number of symbols occupied by SRS within a frequency domain resource group, and / or the number of symbols occupied by a single SRS transmission within a frequency domain resource group. This can effectively save signaling overhead and improve communication performance.

[0194] Conversely, if, among the frequency domain resource groups included in the first frequency domain resource, at least two frequency domain resource groups have different bandwidths, different bandwidths for a single SRS transmission within these at least two frequency domain resource groups, different number of SRS transmissions within these at least two frequency domain resource groups, different total symbols occupied by SRS within these at least two frequency domain resource groups, and / or different symbols occupied by a single SRS transmission within these at least two frequency domain resource groups, then the configuration information indicates the bandwidth corresponding to each frequency domain resource group in these at least two frequency domain resource groups, the bandwidth for a single SRS transmission within each frequency domain resource group, the number of SRS transmissions within each frequency domain resource group, the total symbols occupied by SRS within each frequency domain resource group, and / or the symbols occupied by a single SRS transmission within each frequency domain resource group.

[0195] Based on the implementation method described in Method 1, frequency domain resources can be grouped into frequency domain resource groups. Then, by indicating the frequency hopping method, the frequency hopping pattern between frequency domain resource groups, and the frequency hopping pattern within a frequency domain resource group, the terminal device can be instructed to transmit SRS via frequency hopping throughout the entire first frequency domain resource. Since the bandwidth corresponding to the first frequency domain resource is larger than the 272 RBs in existing communication standards, this method can adapt to high-bandwidth scenarios and improve communication performance.

[0196] For example, as shown in Figure 8, a black rectangle represents one SRS transmission. The arrows indicate the frequency hopping order of the SRS transmission. Assuming that the frequencies of Block 0 to Block 3 increase sequentially, and the frequency hopping order is also sequentially increasing in frequency, then the schematic diagrams of SRS frequency hopping transmission corresponding to frequency hopping schemes 1 and 2 are shown in scheme 1 and scheme 2 in Figure 8.

[0197] Method 2: Frequency hopping transmission of SRS on the first frequency domain resources.

[0198] In Method 2, instead of grouping the resources in the first frequency domain, the instructions are given directly on how to perform frequency hopping within the resources in the first frequency domain.

[0199] The frequency hopping pattern within the first frequency domain resource is used to indicate one or more of the following: the bandwidth of a single SRS transmission within the first frequency domain resource, the starting position of the first SRS transmission within the first frequency domain resource, the number of SRS transmissions within the first frequency domain resource, the total number of symbols occupied by the SRS, and the number of symbols occupied by a single SRS transmission.

[0200] Optionally, the frequency hopping pattern within the first frequency domain resource can also be used to indicate the bandwidth corresponding to the first frequency domain resource.

[0201] The number of SRS transmissions, the total number of symbols occupied by the SRS, and the number of symbols occupied by a single SRS transmission within the first frequency domain resource can be implemented using the method described in Method 1, and will not be repeated here. The bandwidth corresponding to the first frequency domain resource and the bandwidth of a single SRS transmission within the first frequency domain resource can be configured based on Method 1 or Method 2 as follows:

[0202] Method 1:

[0203] The bandwidth corresponding to the first frequency domain resource and the bandwidth of a single SRS transmission within the first frequency domain resource can be found in Table 2 or Table 3 above.

[0204] The bandwidth corresponding to the first frequency domain resource and the bandwidth of a single SRS transmission within the first frequency domain resource can be understood as follows: the bandwidth corresponding to the first frequency domain resource and the bandwidth of a single SRS transmission within the first frequency domain resource are configured according to the above Table 2 or Table 3, or the bandwidth corresponding to the first frequency domain resource and the bandwidth of a single SRS transmission within the first frequency domain resource are determined according to the above Table 2 or Table 3.

[0205] For example, C can be used as a reference in Table 2 or Table 3. SRS Configure the bandwidth corresponding to the first frequency domain resource as m SRS,0 According to C in Table 2 or Table 3 SRS And B SRS The bandwidth of a single SRS transmission configured within the first frequency domain resources is Optionally, C can also be used according to Table 2 or Table 3. SRS and n RRC Configured within the first frequency domain resource, the frequency position corresponding to the bandwidth of a single SRS transmission. RRC The value is determined according to C in Table 2 or Table 3. SRS The indicated m SRS,0 Confirm. For details on how to confirm, please refer to the corresponding content in Figure 5.

[0206] Method 2:

[0207] The bandwidth of a single SRS transmission within the first frequency domain resource corresponds to the first SRS bandwidth configuration table and the multiplication factor.

[0208] The bandwidth of a single SRS transmission within the first frequency domain resource corresponding to the first SRS bandwidth configuration table and multiplier factor can be understood as: configuring the bandwidth of a single SRS transmission within the first frequency domain resource according to the first SRS bandwidth configuration table and multiplier factor, or determining the bandwidth of a single SRS transmission within the first frequency domain resource according to the first SRS bandwidth configuration table and multiplier factor.

[0209] Optionally, the multiplier factor is related to the bandwidth corresponding to the first frequency domain resource. For example, the multiplier factor S is related to N. fb.BWP Related, N fb.BWP Based on the bandwidth N corresponding to the first frequency domain resource fb.BWP_initial Determine S and N fb.BWP The relationship between them can be referred to by the following formula:

[0210] Where, N ref For reference bandwidth, N ref Greater than or equal to 4 and less than or equal to 272, and N ref It is an integer multiple of 4; N fb.fWP It is a multiple of 4 that is greater than 272. For N fb.BWP / N ref The value is rounded down. For N fb.BWP / N ref Round up.

[0211] For example, N ref If the value is 272, then S and N fb.BWP The relationship between them can be further expressed by the following formula:

[0212] in, For N fb.BWP The value of / 272 is rounded down. For N fb.BWP / 272 is rounded up. Taking rounding up as an example, when 272... <N fb.BWP When 544 < 544, S = 2; when 544 ≤ <N fb.BWP When S < 816, S = 3, and so on. Taking rounding down as an example, when 272... <N fb.BWP When 544 < 544, S = 1; when 544 ≤ <N fb.BWP When S < 816, S = 2, and so on.

[0213] Optionally, if the bandwidth N corresponding to the first frequency domain resource is... fb.BWP_initial If N is an integer multiple of 4, then fb.BWP The value is N fb.BWP_initial The value of N. For example, if N fb.BWP_initial =320, then N can be determined. fb.BWP It is 320.

[0214] Optional, if N fb.BWP_initial If N is not a multiple of 4, then we can round down to the nearest integer multiple of 4 to determine N. fb.BWP For example, if N fb.BWP_initial =321, then N can be determined. fb.BWP It is 320.

[0215] For example, N fb.BWP_initial With N fb.BWP The relationship between them can be expressed by the following formula:

[0216] in, Indicates to Round down to the nearest integer.

[0217] In the first example, the configuration information includes S and C from Table 1. SRS B SRS In this way, the terminal device can first determine the C value from the configuration information. SRS B SRS And as determined in Table 1 Then according to The S in the configuration information determines the bandwidth of a single SRS transmission within the first frequency domain resources.

[0218] Taking rounding up as an example, the terminal device can determine the bandwidth of a single SRS transmission within the first frequency domain resources as follows: For example, S = 2 (e.g., N) ref =272, N fb.BWP When S = 320, C = 1. SRS =9, B SRS =1, then the terminal device can be determined by referring to Table 1. Then determine

[0219] Taking rounding down as an example, the terminal device can determine the bandwidth of a single SRS transmission within the first frequency domain resources as follows: For example, S = 1 (e.g., N) ref =272, N fb.BWP When S = 320, C = 1. SRS =9, B SRS =1, then the terminal device can be determined by referring to Table 1. Then determine

[0220] Optionally, in this example, the configuration information may also include N fb.BWP_initial In this way, the terminal device can determine the bandwidth corresponding to the first frequency domain resource based on the configuration information.

[0221] In the second example, the configuration information includes N fb.BWP_initial and C in Table 1 SRS B SRS In this way, the terminal device can first determine the C value from the configuration information. SRS B SRS And as determined in Table 1 According to N in the configuration information fb.BWP_initial Determine N fb.BWP According to N fb.BWP and N ref Determine S, then based on S and Determine the bandwidth of a single SRS transmission within the first frequency domain resources.

[0222] Taking rounding up as an example, the terminal device can determine the bandwidth of a single SRS transmission within the first frequency domain resources as follows: such as N ref =272, N fb.BWP_initial =322, C SRS =9, B SRS =1, then the terminal device can be determined by referring to Table 1. Sure Sure Therefore, it can be determined

[0223] Taking rounding down as an example, the terminal device can determine the bandwidth of a single SRS transmission within the first frequency domain resources as follows: such as N ref =272, N fb.BWP_initial =320, C SRS =9, B SRS =1, then the terminal device can be determined by referring to Table 1. Sure Sure Therefore, it can be determined

[0224] In the third example, the configuration information includes N fb.BWP and C in Table 1 SRS B SRS In this way, the terminal device can first determine the C value from the configuration information. SRS B SRS And as determined in Table 1 According to N ref And N in the configuration information fb.BWP Determine S, then based on S and Determine the bandwidth of a single SRS transmission within the first frequency domain resources.

[0225] Taking rounding up as an example, the terminal device can determine the bandwidth of a single SRS transmission within the first frequency domain resources as follows: such as N ref =272, N fb.BWP =320, C SRS =9, B SRS =1, then the terminal device can be determined by referring to Table 1. Sure Therefore, it can be determined

[0226] Taking rounding down as an example, the terminal device can determine the bandwidth of a single SRS transmission within the first frequency domain resources as follows: such as N ref =272, N fb.BWP =320, C SRS =9, B SRS =1, then the terminal device can be determined by referring to Table 1. Sure Therefore, it can be determined

[0227] Optionally, in this example, the configuration information may also include N fb.BWP_initial In this way, the terminal device can determine the bandwidth corresponding to the first frequency domain resource based on the configuration information.

[0228] It should be understood that when frequency hopping is performed within the first frequency domain resources, the hopping order can be from low to high or from high to low, etc., and this application does not limit this.

[0229] Based on the implementation method described in Method 2, the terminal device can be instructed to send SRS by indicating the frequency hopping pattern within the first frequency domain resource, without needing to group the first frequency domain resource, which can further save signaling overhead for configuration information. Furthermore, since the bandwidth corresponding to the first frequency domain resource is larger than the 272 RBs in existing communication standards, this method can adapt to high-bandwidth scenarios and is beneficial for improving communication performance.

[0230] For example, as shown in Figure 9, a black rectangle represents one SRS transmission. The arrows indicate the frequency hopping sequence of the SRS transmission. Assuming the frequency hopping sequence is that the frequencies increase sequentially, the schematic diagram of SRS frequency hopping transmission corresponding to Method 2 is shown in Figure 9.

[0231] Based on the implementation described in Figure 7, the access network device can configure the terminal device to transmit SRS on the first frequency domain resource. Since the bandwidth corresponding to the first frequency domain resource is greater than 272 RBs, the terminal device can transmit SRS on frequency domain resources exceeding 272 RBs. Compared to transmitting SRS on frequency domain resources with less than 272 RBs, this method can improve communication performance.

[0232] Optionally, the description of "integer multiples of 4" in the embodiments of this application is only an example and can be replaced with "integer multiples of A", where A is a positive integer. For example, A can be 4, 8, or 16, etc.

[0233] It is understood that, in order to achieve the functions in the above embodiments, the access network device and the terminal device include hardware structures and / or software modules corresponding to perform each function. Those skilled in the art should readily recognize that, based on the units and method steps of the various examples described in conjunction with the embodiments disclosed in this application, this application can be implemented in hardware or a combination of hardware and computer software. Whether a function is executed in hardware or by computer software driving hardware depends on the specific application scenario and design constraints of the technical solution.

[0234] Figures 10 and 11 are schematic diagrams of possible communication devices provided in embodiments of this application. These communication devices can be used to implement the functions of access network devices or terminal devices in the above method embodiments, and thus can also achieve the beneficial effects of the above method embodiments. In the embodiments of this application, the communication device can be one of the terminals 120a-120j shown in Figure 1, or it can be RAN node 110a or 110b shown in Figure 1, or it can be a module (such as a chip) applied to terminal devices or access network devices.

[0235] As shown in Figure 10, the communication device 1000 includes a processing unit 1010 and a transceiver unit 1020. The communication device 1000 is used to implement the functions of the terminal device or access network device in the method embodiment shown in Figure 7 above.

[0236] When the communication device 1000 is used to implement the functions of the terminal device in the method embodiment shown in FIG7: the transceiver unit 1020 is used to receive the configuration information of the channel sounding reference signal SRS, the configuration information is used to indicate the first frequency domain resource, and the bandwidth corresponding to the first frequency domain resource is greater than 272 resource blocks RB; the transceiver unit 1020 is also used to transmit the SRS on the first frequency domain resource; the processing unit 1010 is used to process the configuration information of the SRS.

[0237] When the communication device 1000 is used to implement the function of the access network device in the method embodiment shown in FIG7: the transceiver unit 1020 is used to send configuration information of the channel sounding reference signal SRS, the configuration information is used to indicate the first frequency domain resource, the bandwidth of the first frequency domain resource is greater than 272 resource blocks RB; the transceiver unit 1020 is also used to receive the SRS on the first frequency domain resource; the processing unit 1010 is used to process the SRS.

[0238] For a more detailed description of the processing unit 1010 and the transceiver unit 1020, please refer to the relevant description in the method embodiment shown in FIG7.

[0239] As shown in Figure 11, the communication device 1100 includes a processor 1110 and an interface circuit 1120. The processor 1110 and the interface circuit 1120 are coupled to each other. It is understood that the interface circuit 1120 can be a transceiver or an input / output interface. Optionally, the communication device 1100 may also include a memory 1130 for storing instructions executed by the processor 1110, or storing input data required by the processor 1110 to execute instructions, or storing data generated after the processor 1110 executes instructions. Sometimes, the interface circuit 1120 can also be understood as part of the processor 1110, in which case the communication device 1100 includes the processor 1110.

[0240] When the communication device 1100 is used to implement the method shown in FIG7, the processor 1110 is used to implement the function of the processing unit 1010, and the interface circuit 1120 is used to implement the function of the transceiver unit 1020.

[0241] When the aforementioned communication device is a chip applied to a terminal device, the chip implements the functions of the terminal device in the above method embodiments. The chip receives information from the access network device, which can be understood as the information being first received by other modules (such as radio frequency modules or antennas) in the terminal device, and then sent to the chip by these modules. The chip sends information to the access network device, which can be understood as the information being first sent to other modules (such as radio frequency modules or antennas) in the terminal device, and then sent to the access network device by these modules.

[0242] When the aforementioned communication device is a chip applied to an access network device, the chip implements the functions of the access network device in the above method embodiments. The chip receives information from the terminal device, which can be understood as the information being first received by other modules (such as radio frequency modules or antennas) in the access network device, and then sent to the chip by these modules. The chip sends information to the terminal device, which can be understood as the information being sent down to other modules (such as radio frequency modules or antennas) in the access network device, and then sent to the terminal device by these modules.

[0243] In this application, entity A sends information to entity B, either directly or indirectly through other entities. Similarly, entity B receives information from entity A, either directly or indirectly through other entities. Entities A and B can be RAN nodes or terminals, or modules within RAN nodes or terminals. Information transmission and reception can be between RAN nodes and terminals, such as between a base station and a terminal; between two RAN nodes, such as between a CU and a DU; or between different modules within a single device, such as between a terminal device chip and other modules of the terminal device, or between an access network device chip and other modules of the access network device.

[0244] It is understood that the processor in the embodiments of this application can be a central processing unit, or other general-purpose processors, digital signal processors, application-specific integrated circuits, field-programmable gate arrays, or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. A general-purpose processor can be a microprocessor or any conventional processor.

[0245] The method steps in the embodiments of this application can be implemented in hardware or in software instructions executable by a processor. The software instructions can consist of corresponding software modules, which can be stored in random access memory, flash memory, read-only memory, programmable read-only memory, erasable programmable read-only memory, electrically erasable programmable read-only memory, registers, hard disks, portable hard disks, optical discs, or any other form of storage medium well known in the art. An exemplary storage medium is coupled to a processor, enabling the processor to read information from and write information to the storage medium. The storage medium can also be a component of the processor. The processor and the storage medium can reside in an application-specific integrated circuit (ASIC). Alternatively, the ASIC can reside in a base station or terminal. The processor and the storage medium can also exist as discrete components in the base station or terminal.

[0246] In the above embodiments, implementation can be achieved entirely or partially through software, hardware, firmware, or any combination thereof. When implemented using software, it can be implemented entirely or partially in the form of a computer program product. The computer program product includes one or more computer programs or instructions. When the computer program or instructions are loaded and executed on a computer, the processes or functions described in the embodiments of this application are performed entirely or partially. The computer can be a general-purpose computer, a special-purpose computer, a computer network, an access network device, a terminal device, or other programmable device. The computer program or instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer program or instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired or wireless means. The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that integrates one or more available media. The available medium can be a magnetic medium, such as a floppy disk, hard disk, or magnetic tape; it can also be an optical medium, such as a digital video optical disc; or it can be a semiconductor medium, such as a solid-state drive. The computer-readable storage medium may be a volatile or non-volatile storage medium, or may include both types of storage media.

[0247] In the various embodiments of this application, unless otherwise specified or in case of logical conflict, the terminology and / or descriptions of different embodiments are consistent and can be referenced by each other. The technical features of different embodiments can be combined to form new embodiments according to their inherent logical relationship.

[0248] Depending on whether the specification uses "optional": In this application, "at least one" means one or more, and "more than one" means two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone, where A and B can be singular or plural. In the textual description of this application, the character " / " generally indicates an "or" relationship between the preceding and following related objects; in the formulas of this application, the character " / " indicates a "division" relationship between the preceding and following related objects. "Including at least one of A, B, and C" can mean: including A; including B; including C; including A and B; including A and C; including B and C; including A, B, and C.

[0249] It is understood that the various numerical designations used in the embodiments of this application are merely for descriptive convenience and are not intended to limit the scope of the embodiments of this application. The order of the process numbers described above does not imply the order of execution; the execution order of each process should be determined by its function and internal logic.

Claims

1. A communication method, characterized in that, The method includes: Configuration information for receiving channel sounding reference signal (SRS) is used to indicate a first frequency domain resource, which is used for SRS transmission, and the bandwidth corresponding to the first frequency domain resource is greater than 272 resource blocks (RB). SRS is transmitted on the first frequency domain resource.

2. A communication method, characterized in that, The method includes: Configuration information for transmitting a Channel Sounding Reference Signal (SRS) is provided, wherein the configuration information is used to indicate a first frequency domain resource, the first frequency domain resource is used for SRS transmission, and the bandwidth corresponding to the first frequency domain resource is greater than 272 resource blocks (RBs). Receive SRS on the first frequency domain resource.

3. The method according to claim 1 or 2, characterized in that, The first frequency domain resource includes at least two frequency domain resource groups; The configuration information is also used to indicate one or more of the following: Frequency hopping method, wherein the frequency hopping method is to first hop frequency between frequency domain resource groups and then hop frequency within frequency domain resource groups, or the frequency hopping method is to first hop frequency within frequency domain resource groups and then hop frequency between frequency domain resource groups; The frequency hopping pattern between frequency domain resource groups; and Frequency hopping patterns within the frequency domain resource group.

4. The method according to claim 3, characterized in that, The frequency hopping pattern between frequency domain resource groups is used to indicate the starting frequency domain resource group for frequency hopping and / or the frequency hopping sequence between the frequency domain resource groups.

5. The method according to claim 3 or 4, characterized in that, The frequency hopping pattern within the frequency domain resource group is used to indicate one or more of the following: The bandwidth corresponding to the frequency domain resource group, the starting position of the frequency domain resource group, the bandwidth of a single SRS transmission within the frequency domain resource group, the starting position of the first SRS transmission within the frequency domain resource group, the number of SRS transmissions within the frequency domain resource group, the total number of symbols occupied by the SRS, and the number of symbols occupied by a single SRS transmission.

6. The method according to claim 5, characterized in that, The bandwidth of a single SRS transmission within the frequency domain resource group is determined according to a multiplier factor, which is related to the bandwidth corresponding to the frequency domain resource group.

7. The method according to any one of claims 3-6, characterized in that, If the bandwidth corresponding to the frequency domain resource group is less than or equal to 272 RBs, then the frequency hopping pattern in the frequency domain resource group corresponds to the first SRS bandwidth configuration table. And / or, if the bandwidth corresponding to the frequency domain resource group is greater than 272 RBs, then the frequency hopping pattern in the frequency domain resource group corresponds to the second SRS bandwidth configuration table, which is different from the first SRS bandwidth configuration table.

8. The method according to claim 1 or 2, characterized in that, The configuration information is also used to indicate the frequency hopping pattern within the first frequency domain resource; the frequency hopping pattern within the first frequency domain resource is used to indicate one or more of the following: the bandwidth of a single SRS transmission within the first frequency domain resource, the starting position of the first SRS transmission within the first frequency domain resource, the number of SRS transmissions within the first frequency domain resource, the total number of symbols occupied by the SRS, and the number of symbols occupied by a single SRS transmission.

9. The method according to claim 8, characterized in that, The bandwidth of a single SRS transmission within the first frequency domain resource is determined based on a multiplier factor, which is related to the bandwidth corresponding to the first frequency domain resource.

10. A communication device, characterized in that, include: One or more functional modules for performing the method as described in any one of claims 1-9.

11. A communication device, characterized in that, The device includes a processor and an interface circuit, wherein the interface circuit is used to receive signals from other communication devices and transmit them to the processor or to send signals from the processor to other communication devices, and the processor is used to implement the method as described in any one of claims 1-9 through logic circuits or executing code instructions.

12. A computer-readable storage medium, characterized in that, The storage medium stores a computer program or instructions, which, when executed by a communication device, implement the method as described in any one of claims 1-9.

13. A computer program product, comprising a computer program or instructions, characterized in that, When the computer program or instructions are executed by the communication device, they implement the method as described in claims 1-9.

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