Communication method and related product

Abstract

The present application discloses a communication method and a related product. The method comprises: a network device sending first information, the first information being associated with a number K of frequency-domain sub-bands corresponding to a first time domain unit, the frequency-domain sub-bands comprising at least one resource block (RB), the K frequency-domain sub-bands being non-contiguous in a frequency domain, and K being an integer greater than 1; and a terminal device receiving the first information, and sending a pilot signal on the K frequency-domain sub-bands. Adopting the method in the embodiments of the present application improves interpolation channel estimation accuracy of remaining unmeasured sub-bands when channel measurement is performed on the basis of a frequency-hopped SRS transmitted on a plurality of frequency-domain sub-bands, thereby improving channel measurement performance.

Description

Communication method and related products

[0001] This application claims priority to the Chinese patent application No. 202411392955.6, filed on September 30, 2024, and entitled "Communication method and related products", the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] The present application relates to the field of communication technology, in particular to a communication method and related products. BACKGROUND

[0003] Sounding reference signal (SRS) frequency hopping is an important transmission mechanism of SRS, which realizes the scanning of the measurement bandwidth through multiple SRS transmissions, and the frequency domain bandwidth of the SRS transmitted in each SRS transmission occasion is less than or equal to the measurement bandwidth. When the frequency domain bandwidth of the SRS transmitted in each SRS transmission occasion is less than the measurement bandwidth, the power spectral density of the SRS can be doubled to improve the received signal-to-noise ratio of the SRS.

[0004] However, when the SRS performs frequency hopping transmission, the frequency domain resources occupied by the SRS in one time domain unit are a plurality of contiguous resource blocks (RBs), and the plurality of contiguous RBs only occupy a part of the entire measurement frequency domain bandwidth. In order to obtain the channel measurement results of the entire measurement frequency domain bandwidth, one way is to wait for multiple SRS frequency hopping transmissions and then collect the measurement results in the entire measurement bandwidth. However, when the SRS transmission period is large or the channel time variation is severe, channel measurement through multiple transmissions will cause the equivalent channel measurement period to increase by a factor of two, resulting in a large difference between the measured channel estimation results and the actual channel, causing serious performance loss. Another way is to use the channel frequency domain correlation through a small number of measurements to obtain the channel estimation results in the bandwidth of the remaining reference signals that are not transmitted through channel measurement of a local bandwidth. However, for one SRS transmission, the measurable frequency domain resources are concentrated in a contiguous sub-band, which will result in difficulty in frequency domain channel interpolation or prediction based on channel correlation, and serious performance loss. SUMMARY

[0005] Embodiments of the present application provide a communication method and related products, by configuring a plurality of frequency domain sub-bands that are not contiguous in the frequency domain in the same time domain unit, so that when channel measurement is performed based on the SRS transmitted by frequency hopping on the plurality of frequency domain sub-bands, the interpolation channel estimation accuracy of the remaining unmeasured sub-bands is improved, and the performance of channel measurement is further improved.

[0006] In a first aspect, a communication method is provided. The method comprises: receiving first information, the first information being associated with a quantity K of frequency domain subbands corresponding to a first time domain unit, the frequency domain subbands comprising at least one resource block (RB), and the K frequency domain subbands being discontinuous in the frequency domain, K being an integer greater than 1; and transmitting pilot signals on the K frequency domain subbands.

[0007] The first aspect solution can be executed by a terminal device or a module (such as a chip system, etc.) in the terminal device, and can also be executed by a logic node, a logic module or software capable of realizing all or part of the terminal device functions, and no limitation is made in this regard.

[0008] In the embodiments of the present application, the terminal device is configured with K frequency domain subbands discontinuous in the same time domain unit, so that the terminal device transmits SRS on the K frequency domain subbands by frequency hopping. When the network device performs channel measurement based on the SRS transmitted by frequency hopping, since the SRS is scattered in the measurement bandwidth, the base station performs interpolation channel estimation of the remaining unmeasured subbands based on the scattered SRS, and the use of adjacent SRS subbands is more conducive to the interpolation estimation of the frequency domain channel, which can effectively improve the accuracy of the channel measurement result and improve the measurement performance.

[0009] In a feasible implementation, the first time domain unit corresponds to one frequency hopping transmission occasion.

[0010] In a feasible implementation, when the frequency domain subband comprises a plurality of RBs, the plurality of RBs are continuous in the frequency domain.

[0011] In a feasible implementation, the first information comprises a first configuration parameter, parameter B SRS , and parameter b hop , when b hop <B SRS , the quantity K of frequency domain subbands is determined according to the first configuration parameter.

[0012] The present embodiment directly indicates the quantity K of frequency domain subbands through the first configuration parameter, which can effectively improve the efficiency of determining the quantity of frequency domain subbands.

[0013] In a feasible implementation, the first information comprises a second configuration parameter b SRS , parameter B SRS , and parameter b hop , when b hop <B SRS , the quantity K of frequency domain subbands is determined according to the second configuration parameter. N b′ represents the quantity of frequency domain subbands corresponding to parameter b′, b SRS is less than or equal to B SRS .

[0014] In a feasible implementation, BSRS for indicating a frequency hopping bandwidth, b hop for indicating a frequency hopping bandwidth, b SRS in combination with determining whether to transmit a pilot signal by frequency hopping.

[0015] The embodiment obtains the number K of frequency domain subbands by calculating a second configuration parameter, wherein the second configuration parameter is related to a parameter B in an existing SRS frequency domain bandwidth configuration table SRS , so that the calculation process for the second configuration parameter follows the parameter setting of the existing SRS frequency domain resource configuration table, and the compatibility of the newly added second configuration parameter with the existing SRS frequency domain resource configuration parameter can be guaranteed.

[0016] In a possible implementation, each of the K frequency domain subbands includes the same number of RBs.

[0017] In a possible implementation, the first information further includes a parameter C SRS , and the number of RBs in each frequency domain subband is a frequency hopping bandwidth determined based on C SRS and B SRS . is an integer.

[0018] In a possible implementation, the first information further includes a parameter C SRS , and the number of RBs in each frequency domain subband is a frequency hopping bandwidth determined based on C SRS and B SRS .

[0019] In a possible implementation, when k is any value from 0 to K-1, the frequency domain interval between the kth frequency domain subband and the k+1th frequency domain subband is the same.

[0020] In the embodiment, the number of RBs included in the K frequency domain subbands is the same, and the frequency domain intervals of every two adjacent frequency domain subbands are the same. In this way, the multiple frequency domain subbands for frequency hopping transmission of SRS can be more uniformly distributed in the SRS measurement bandwidth corresponding to the first time domain unit, so that the interpolation channel estimation of the remaining unmeasured subbands based on the measured subbands is more conducive to the interpolation estimation of the frequency domain channel, which can effectively improve the accuracy of the channel measurement result and improve the measurement performance. In addition, the number of RBs occupied by the SRS transmitted on the first time domain unit corresponds to the frequency hopping bandwidth, that is, the SRS transmitted and measured in the first time domain unit remains unchanged in the existing SRS frequency hopping transmission process, which guarantees the compatibility. Or the number of RBs occupied by each frequency domain subband on the first time domain unit corresponds to the frequency hopping bandwidth, so that when the SRS is frequency hopped and transmitted according to the K frequency domain subbands in each time domain unit, the number of time domain units required to complete the measurement bandwidth scanning is reduced, which equivalently improves the efficiency of the channel measurement. Or in the case that the time domain unit for receiving SRS is fixed, more SRS measurements can be completed, and the channel measurement accuracy is improved.

[0021] In a possible implementation, the frequency domain interval between the kth frequency domain subband and the k+1th frequency domain subband is For the C SRS determined measurement bandwidth; the frequency domain starting position corresponding to the kth frequency domain subband satisfies:

[0022] k is any value in 0 to K-1; B represents the number of subcarriers included in each RB, b is a value greater than or equal to 0 and less than or equal to B SRS , n b is a frequency domain starting offset parameter.

[0023] In a possible implementation, the frequency domain starting offset parameter n b satisfies:

[0024] where n RRC is a frequency hopping frequency domain offset parameter configured by the network device, and n

[0025] b' is a value greater than or equal to b hop and less than or equal to b, and n SRS is a transmission times index.

[0026] In a possible implementation, the frequency domain interval between the kth frequency domain subband and the k+1th frequency domain subband is For the C SRSThe determined measurement bandwidth; the frequency domain starting position corresponding to the kth frequency domain subband satisfies:

[0027] k is any value in 0 to K-1; B represents the number of subcarriers contained in each RB, b is a value greater than or equal to 0 and less than or equal to B SRS , and n b is a frequency domain starting offset parameter.

[0028] In a possible implementation, the frequency domain starting offset parameter satisfies:

[0029] wherein n RRC is a frequency hopping frequency domain offset parameter configured by the network device, wherein,

[0030] b' is a value greater than or equal to b hop and less than or equal to b, and n SRS is a transmission times index.

[0031] The above embodiments provide a manner of determining the frequency domain starting position according to the corresponding formula in the case of transmitting SRS through K frequency domain subbands, so that the occupied frequency domain resources can meet the conditions of the same number of occupied RBs or the same frequency domain interval between every two adjacent frequency domain subbands when transmitting SRS. In this way, the SRS can be transmitted on the K frequency domain subbands in the manner indicated by the network device, and the reliability of SRS transmission and reception is ensured.

[0032] In a second aspect, the present application provides a communication method. The method comprises: transmitting first information, the first information being associated with the number K of frequency domain subbands corresponding to a first time domain unit, the frequency domain subbands including at least one resource block (RB), and the K frequency domain subbands being discontinuous in the frequency domain, K being an integer greater than 1; and receiving a pilot signal on the K frequency domain subbands.

[0033] The second aspect scheme can be executed by a network device or a module (such as a chip system) in the network device, and can also be executed by a logic node, a logic module or software capable of realizing all or part of the functions of the network device, and no limitation is made in this regard.

[0034] In a possible implementation, the first information includes a first configuration parameter B SRS and a parameter b hop , and when b hop < B SRS , the first configuration parameter is used to determine the number K of frequency domain subbands.

[0035] The first information includes a second configuration parameter b SRS and a parameter BSRS , and parameter b hop , when b hop < B SRS , the number of frequency domain subbands N b′ represents the number of frequency domain subbands corresponding to parameter b′, b SRS is less than or equal to B SRS .

[0036] In a possible implementation, B SRS is used to indicate a frequency hopping bandwidth, b hop is used to determine whether to transmit a pilot signal in a frequency hopping manner in combination with B SRS .

[0037] In a possible implementation, each of the K frequency domain subbands includes the same number of RBs.

[0038] In a possible implementation, the first information further includes parameter C SRS , and the number of RBs in each frequency domain subband is is a frequency hopping bandwidth determined based on C SRS and B SRS . is an integer.

[0039] In a possible implementation, the first information further includes parameter C SRS , and the number of RBs in each frequency domain subband is is a frequency hopping bandwidth determined based on C SRS and B SRS .

[0040] In a possible implementation, the frequency domain interval between the kth frequency domain subband and the k+1th frequency domain subband is the same when k is any value from 0 to K-1.

[0041] In a possible implementation, the frequency domain interval between the kth frequency domain subband and the k+1th frequency domain subband is is a measurement bandwidth determined based on C SRS ; and a frequency domain starting position corresponding to the kth frequency domain subband satisfies:

[0042] k is any value from 0 to K-1; represents the number of subcarriers included in each RB, b is a value greater than or equal to 0 and less than or equal to B SRS , n b is a frequency domain starting offset parameter.

[0043] In a possible implementation, the frequency domain starting offset parameter n b satisfies:

[0044] wherein n RRC is a frequency hopping frequency domain offset parameter configured for the network device, wherein n

[0045] b' is a value greater than or equal to b hop and less than or equal to b, and n SRS is a transmission times index.

[0046] In a possible implementation, a frequency domain interval between the kth frequency domain sub-band and the (k+1)th frequency domain sub-band is is a measurement bandwidth determined based on the C SRS , the frequency domain starting position of the kth frequency domain sub-band satisfies:

[0047] k is any value in 0 to K-1; B represents a number of subcarriers contained in each RB, b is a value greater than or equal to 0 and less than or equal to B SRS , and n b is a frequency domain starting offset parameter.

[0048] In a possible implementation, the frequency domain starting offset parameter satisfies:

[0049] wherein n RRC is a frequency hopping frequency domain offset parameter configured for the network device, wherein n

[0050] b' is a value greater than or equal to b hop and less than or equal to b, and n SRS is a transmission times index.

[0051] In a third aspect, a communication apparatus is provided, and the communication apparatus includes units or modules for performing the possible methods in any of the first aspect or the second aspect.

[0052] In a fourth aspect, an embodiment of the present application provides a communication apparatus, and the communication apparatus includes at least one processor coupled with a memory; wherein the at least one processor is configured to execute computer programs or instructions stored in the memory, so that the method implemented in any of the first aspect or the second aspect is executed.

[0053] In a fifth aspect, an embodiment of the present application provides a communication system, the communication system comprising a first device and a second device, wherein the first device is configured to perform the method of any one of the first aspect, and the second device is configured to perform the method of any one of the second aspect.

[0054] In a sixth aspect, an embodiment of the present application provides a computer readable storage medium, the computer readable storage medium storing computer instructions, when the computer instructions are executed, causing a computer to perform the method of any one of the above methods.

[0055] In a seventh aspect, an embodiment of the present application provides a computer program product, the computer program product comprising: computer program code, when the computer program code is run by a computer, causing the computer to perform the method of any one of the above methods.

[0056] In an eighth aspect, an embodiment of the present application provides a chip, the chip being coupled with a memory, and being configured to read and execute program instructions in the memory, so that a device in which the chip is located implements the method of any one of the above methods. BRIEF DESCRIPTION OF DRAWINGS

[0057] FIG. 1A is a wireless communication system architecture provided by an embodiment of the present application.

[0058] FIG. 1B is a module schematic diagram of a communication device provided by an embodiment of the present application.

[0059] FIG. 1C is an O-RAN architecture diagram provided by an embodiment of the present application.

[0060] FIG. 2A is a schematic diagram of SRS frequency hopping occupying frequency domain resources provided by an embodiment of the present application.

[0061] FIG. 2B is a schematic diagram of SRS bandwidth configuration provided by an embodiment of the present application.

[0062] FIG. 2C is a schematic diagram of RB mapping of SRS frequency hopping provided by an embodiment of the present application.

[0063] FIG. 3 is a flowchart of a communication method provided by an embodiment of the present application.

[0064] FIG. 4A is a flowchart of another communication method provided by an embodiment of the present application.

[0065] FIG. 4B is a schematic diagram of a time-frequency resource mapping method of SRS frequency hopping transmission provided by an embodiment of the present application.

[0066] FIG. 5A is a flowchart of another communication method provided by an embodiment of the present application.

[0067] FIG. 5B is a schematic diagram of a time-frequency resource mapping method of SRS frequency hopping transmission provided by an embodiment of the present application.

[0068] FIG. 6 is a structural schematic diagram of a communication apparatus provided by an embodiment of the present application.

[0069] FIG. 7 is a structural schematic diagram of a network device provided by an embodiment of the present application.

[0070] FIG. 8 is a structural schematic diagram of a UE provided by an embodiment of the present application.

[0071] FIG. 9 is a structural schematic diagram of a chip provided by an embodiment of the present application. DETAILED DESCRIPTION

[0072] The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application. In the embodiments of the present application, the terms "system" and "network" can be used interchangeably. Unless otherwise specified, " / " represents an "or" relationship between the objects associated before and after it, for example, A / B can represent A or B; in the present application, "and / or" is only a description of the associated relationship between the associated objects, which means that there can be three relationships, for example, A and / or B, which means that there are three cases of A alone, A and B together, and B alone, where A and B can be singular or plural. In addition, in the description of the present application, unless otherwise specified, "multiple" means two or more than two. "At least one of the following" or similar expressions means any combination of these items, including any combination of single item or multiple items. For example, at least one of a, b, or c can mean a, b, c, a-b, a-c, b-c, or a-b-c, where a, b, and c can be one or more. In addition, in order to clearly describe the technical solutions of the embodiments of the present application, in the embodiments of the present application, the same items or similar items with basically the same function are distinguished by using "first", "second", etc. The skilled in the art can understand that "first", "second", etc. do not limit the quantity and execution order, and "first", "second", etc. also do not necessarily mean different.

[0073] In the embodiments of the present application, the reference to "one embodiment" or "some embodiments" means that the specific features, structures or characteristics described in connection with the embodiment are included in one or more embodiments of the present application. Therefore, the statements "in one embodiment", "in some embodiments", "in other some embodiments", "in further some embodiments" and the like in the specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized. The terms "include", "contain", "have" and their variants mean "include but not limited to", unless otherwise specifically emphasized.

[0074] In addition, in the embodiments of the present application, the words "example" and "for example" are used to mean serving as an instance, illustration, or demonstration. Any embodiment or design presented as an "example" in the present application should not be construed as preferable or advantageous over other embodiments or design schemes. Rather, the word "example" is used to present a concept in a specific manner.

[0075] In the embodiments of the present application, "information", "signal", "message", "channel", and "signaling" can be used interchangeably, and it should be pointed out that when the distinction is not emphasized, the meanings expressed are matched. "Of", "corresponding", and "corresponding" can be used interchangeably, and it should be pointed out that when the distinction is not emphasized, the meanings expressed are matched. In addition, " / " mentioned in the present application can be used to represent the relationship of "or".

[0076] The following detailed description further illustrates the objects, technical schemes, and beneficial effects of the present application. It should be understood that the following is only a specific embodiment of the present application and is not used to limit the protection scope of the present application. Any modification, equivalent replacement, improvement, etc. made on the basis of the technical scheme of the present application should be included in the protection scope of the present application.

[0077] In various embodiments of the present application, the terms and / or descriptions of different embodiments are consistent and can be referred to each other if there is no special description and logical conflict. The technical features in different embodiments can be combined to form new embodiments according to their inherent logical relationship.

[0078] The system architecture related to the embodiments of the present application is introduced below.

[0079] Referring to FIG. 1A, FIG. 1A is a wireless communication system architecture provided by an embodiment of the present application. As shown in FIG. 1A, a wireless communication system 1000 includes a radio access network (RAN) 100 and a core network (CN) 200, and the RAN 100 and the CN 200 can also be connected to the Internet 300. The RAN 100 includes at least one RAN node (such as 110a and 110b in FIG. 1A, collectively referred to as 110) and at least one terminal (such as 120a-120j in FIG. 1A, collectively referred to as 120). The RAN can also include other RAN nodes, such as wireless relay devices and / or wireless backhaul devices (not shown in FIG. 1A), etc. The terminal 120 is connected to the RAN node 110 in a wireless manner. The RAN node 110 is connected to the core network 200 in a wireless or wired manner. The core network device in the core network 200 and the RAN node 110 in the RAN 100 can be different physical devices respectively, or can be the same physical device integrated with the logical functions of the core network and the logical functions of the radio access network.

[0080] The RAN 100 can be a 3rd generation partnership project (3GPP) related cellular system, such as a 4G, 5G mobile communication system, a satellite communication / non-terrestrial network (NTN) system, or a future-oriented evolution system. The RAN 100 can also be an open radio access network (O-RAN or ORAN), a cloud radio access network (CRAN), or a wireless fidelity (WiFi) system, and can also be a communication system combining two or more of the above systems.

[0081] Referring to FIG. 1B, FIG. 1B is a schematic diagram of modules of a communication device according to an embodiment of the present application. The modules and functions of the network device and the UE are as shown in FIG. 1B. The network device and the terminal device can interact with RRC signaling through the RRC module. The network device and the terminal device can interact with MAC control element (MAC CE) signaling through the media access control (MAC) module. The network device and the terminal device can interact with uplink / downlink control signaling such as physical uplink control channel (PUCCH) / physical downlink control channel (PDCCH) and uplink / downlink data signaling such as physical uplink shared channel (PUSCH) / physical downlink shared channel (PDSCH) through the physical layer (PHY).

[0082] The embodiments of the present application are applicable to both homogeneous network and heterogeneous network scenarios, and are not limited to transmission points. The embodiments of the present application are applicable to multi-point cooperative transmission between macro base stations and macro base stations, micro base stations and micro base stations, and macro base stations and micro base stations, and are applicable to frequency division duplexing (FDD) or time division duplexing (TDD) systems. The embodiments of the present application are applicable to both low frequency scenarios (sub 6 GHz) and high frequency scenarios (above 6 GHz), terahertz, optical communication, and the like.

[0083] The terminal involved in the embodiments of the present application can also be referred to as a terminal device, a user equipment (UE), and the like. The terminal device is an entity on the user side for receiving or transmitting signals, used for sending uplink signals to a network device or receiving downlink signals from the network device; the main functions include collecting data (part of the terminal device), receiving control information and downlink data of the network device, and transmitting electromagnetic waves to transmit uplink data to the network device. The terminal device can communicate with one or more core networks through the network device. The terminal device includes a handheld device with a wireless connection function, another processing device connected to a wireless modem, or a vehicle-mounted device, and the like. The terminal device can be a portable, pocket-sized, handheld, built-in computer, or vehicle-mounted mobile device. The terminal device can be widely used in various scenarios, such as cellular communication, D2D, V2X, point-to-point (P2P), machine-to-machine (M2M), machine type communication (MTC), internet of things (IoT), virtual reality (VR), augmented reality (AR), industrial control, autonomous driving, remote medical treatment, smart power grid, smart furniture, smart office, smart wear, smart transportation, smart city, unmanned aerial vehicle, robot, remote sensing, passive sensing, positioning, navigation, autonomous delivery, and mobile, and the like.Some examples of the terminal device are: a user equipment (UE) of a 3GPP standard, a fixed device, a mobile device, a handheld device, a wearable device, a cellular phone, a smart phone, a session initiated protocol (SIP) phone, a notebook, a personal computer, a smart book, a vehicle, a satellite, a global positioning system (GPS) device, a drone, a helicopter, an aircraft, a ship, a remote control device, a smart home device, an industrial device, a personal communication service (PCS) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), a wireless webcam, a tablet, a palm computer, a mobile internet device (MID), a wearable device such as a smart watch, a VR device, an AR device, a wireless terminal in industrial control, a terminal in Internet of Vehicles, a wireless terminal in self-driving, a wireless terminal in smart grid, a wireless terminal in transportation safety, a wireless terminal in smart city such as a smart fuel dispenser, a terminal device on a high-speed rail, and a wireless terminal in a smart home such as a smart speaker, a smart coffee machine, a smart printer, etc. The terminal device can be a wireless device in the above various scenarios or an apparatus used in a wireless device, for example, a communication module, a modem, or a chip in the above devices, etc. The terminal device can also be referred to as a terminal, a terminal device, a UE, a mobile station (MS), a mobile terminal (MT), etc. The terminal device can also be a terminal device in a future wireless communication system. The terminal device can be used in a dedicated network device or a general-purpose device. The embodiments of the present application do not limit the specific technology and specific device form of the terminal device.

[0084] In this application, the communication device for realizing the function of the terminal device can be a terminal device, a terminal device with part of the function of the terminal device, or a device capable of supporting the function of the terminal device, such as a chip system, which can be installed in the terminal device or matched with the terminal device. In this application, the chip system can be composed of a chip or include a chip and other discrete devices. In the technical solutions provided in this application, the communication device is taken as an example for description.

[0085] The wireless access network node involved in the embodiments of the present application is used to receive uplink signals from terminal devices or transmit downlink signals to terminal devices. The access network node can also be referred to as a base station (BS), a RAN device or network element, an access point (AP), a small tower, etc. The base station can be broadly covered by various names in the following or be replaced by the following names, such as: RAN node, Node B (NodeB), evolved Node B (eNB), next generation Node B (gNB), access network device in open radio access network (O-RAN), relay station, access point, transmitting and receiving point (TRP), transmitting point (TP), master eNB (MeNB), secondary eNB (SeNB), multi-standard radio (MSR) node, home base station, network controller, access node, wireless node, access point (AP), transmission node, transceiver node, building baseband unit (BBU), remote radio unit (RRU), active antenna unit (AAU), remote radio head (RRH), centralized unit (CU), distributed unit (DU), radio unit (RU), centralized unit control plane (CU-CP) node, centralized unit user plane (CU-UP) node, positioning node, etc. The base station can be a macro base station, a micro base station, a relay node, a donor node or the like, or a combination thereof. The network device can also refer to a communication module, modem or chip used in the aforementioned devices or apparatuses. The network device can also be a mobile switching center and a device-to-device (D2D), vehicle-to-everything (V2X), machine-to-machine (M2M) communication device that assumes the function of a base station, a network side device in a future communication system, etc. The network device can support networks of the same or different access technologies. The embodiments of the present application do not limit the specific technology and specific device form adopted by the network device.

[0086] In some deployments, the network device mentioned in embodiments of the present application can be a device including a CU, or a DU, or a device including a CU and a DU, or a control plane CU node (central unit-control plane (CU-CP)) and a user plane CU node (central unit-user plane (CU-UP)) and a DU node. For example, the network device can include a gNB-CU-CP, a gNB-CU-UP and a gNB-DU.

[0087] In some deployments, wireless access is assisted by a plurality of RAN nodes cooperating to assist a terminal, and different RAN nodes respectively implement part of the functions of a base station. For example, the RAN node can be a CU, a DU, a CU-CP, a CU-UP, or an RU, etc. The CU and the DU can be separately arranged, or can also be included in the same network element, for example, in a BBU. The RU can be included in a radio frequency device or a radio frequency unit, for example, included in an RRU, an AAU or an RRH.

[0088] The above-mentioned O-RAN aims to implement an intelligent and open access network. The main feature of the O-RAN architecture is the separation of software and hardware, which realizes the virtualization of network functions and the standardization of hardware. In addition, the O-RAN also introduces artificial intelligence (AI). Referring to FIG. 1C, FIG. 1C is an O-RAN architecture provided by an embodiment of the present application, as shown in FIG. 1C, in the ORAN system, the CU can also be referred to as O-CU (open CU), the DU can also be referred to as O-DU, the CU-CP can also be referred to as O-CU-CP, the CU-UP can also be referred to as O-CU-UP, and the RU can also be referred to as O-RU. In different systems, the CU (or CU-CP and CU-UP), DU or RU can also have different names, but those skilled in the art can understand their meanings. Any one of the CU (or CU-CP, CU-UP), DU and RU in the present application can be implemented by a software module, a hardware module, or a combination of a software module and a hardware module.

[0089] The network element of the ORAN system in FIG. 1C is introduced as follows:

[0090] Service management and orchestration framework (SMO): its function is similar to network management.

[0091] Non-Real Time (Non-RT) RAN Intelligent Controller (RIC): A non-real-time intelligent management function for RAN. It is capable of implementing artificial intelligence (AI) / machine learning (ML) workflows including model training and model updates, and guiding applications / functions in the Near-Real Time RAN Intelligent Controller (Near-RT RIC) based on policies. The Non-RT RIC is located in the SMO module.

[0092] Near-RT RIC: A near-real-time intelligent management function for RAN. It implements near-real-time control and optimization of modules and resources of O-RAN through data collection and related operations on the E2 interface.

[0093] O-RAN Central Unit (O-CU): To implement the RRC layer, packet data convergence protocol (PDCP) layer, and service data adaptation protocol (SDAP) layer and other control functions in the 3rd generation partnership project (3GPP) standard.

[0094] O-RAN Central Unit Control Plane (O-CU-CP): Similar to the CU-CP in the NR system, it is used to implement the functions of the RRC layer and the control plane functions of the PDCP layer. It belongs to the O-CU part.

[0095] O-RAN Central Unit User Plane (O-CU-UP): Similar to the CU-UP in the NR system, it is used to implement the functions of the SDAP layer and the user plane functions of the PDCP layer. It belongs to the O-CU part.

[0096] O-RAN Distributed Unit (O-DU): Based on low-layer function split, used to implement the radio link control (RLC) layer, media access control (MAC) layer, and higher physical layer (Higher PHY) in the 3GPP standard. The higher physical layer functions include one or more of the following: forward error correction (FEC) encoding / decoding, scrambling / descrambling, or modulation / demodulation.

[0097] O-RAN Radio Unit (O-RU): Based on low-layer function split, used to implement lower physical layer (Lower PHY) functions and radio frequency functions in the 3GPP standard. The lower physical layer functions include one or more of the following: fast fourier transform (FFT) transform / inverse fast fourier transformation (iFFT) transform, digital beamforming, or extraction and filtering of physical random access channels (PRACH). Similar to the transmission reception point (TRP) or remote radio head (RRH) in 3GPP, but including lower physical layer functions such as FFT / iFFT or PRACH extraction.

[0098] O-RAN Cloud (O-Cloud): As a cloud computing platform, it includes physical infrastructure nodes for hosting O-RAN functions such as RIC, O-DU, etc.; supports software components (such as operating systems, virtual machine monitors, container runtimes), management and orchestration functions.

[0099] The interfaces included in FIG. 1C are described as follows:

[0100] A1 interface: The interface between Non-RT RIC and Near-RT RIC, used for intelligent and dynamic control of O-RAN internal wireless resources. The Non-RT RIC provides policies, rich information, and ML model updates to the Near-RT RIC through the A1 interface, while the Near-RT RIC provides policy feedback to the Non-RT RIC through the A1 interface.

[0101] E2 interface: E2 interface is an open interface between two endpoints, used to connect Near-RT RIC and RAN node, including, for example, CU, DU in 5G, O-RAN compatible eNB in 4G, O-CU (O-CU-CP and / or O-CU-UP) in O-RAN, and / or O-DU, etc. RIC can obtain RAN node data collection and feedback through E2 node, and RAN node can obtain control feedback of Near-RT RIC through E2 node.

[0102] O1 interface: interface between management entity in SMO and O-RAN module, used for operation management, through which FCAPS management, software management, file management are realized.

[0103] O2 interface: interface between SMO and infrastructure management framework supporting O-RAN virtual network function.

[0104] O-FH CUS-Plane interface: including control plane (C-Plane), user plane (U-Plane), synchronization plane (S-Plane) interface. Control plane, used for real-time control between O-DU and O-RU, for example, used for O-DU to transmit weight to O-RU for beamforming, or used for O-DU to control power of O-RU, etc. User plane, used for transmitting communication data between access network device and terminal between DU and RU. Synchronization plane, used for O-DU to provide clock synchronization to O-RU.

[0105] In this application, the communication device for realizing the access network function as above can be an access network device, can be a network device with part of the function of the access network, or can be a device capable of supporting the realization of the access network function, such as a chip system, a hardware circuit, a software module, or a hardware circuit plus a software module, which can be installed in the access network device or used in matching with the access network device. In the method of this application, the communication device for realizing the function of the access network device is taken as an example for description.

[0106] The core network device involved in the embodiments of the present application refers to a device in the CN that provides service support for a terminal. Currently, examples of some core network devices are: an access and mobility management function (AMF) entity, a session management function (SMF) entity, a user plane function (UPF) entity, and the like, which are not listed one by one here. Among them, the AMF entity can be responsible for access management and mobility management of the terminal; the SMF entity can be responsible for session management, such as session establishment of a user; and the UPF entity can be a functional entity of the user plane, mainly responsible for connecting external networks. It should be noted that the entity in the present application can also be referred to as a network element or a functional entity, for example, the AMF entity can also be referred to as an AMF network element or an AMF functional entity, and for another example, the SMF entity can also be referred to as an SMF network element or an SMF functional entity, and the like.

[0107] It should be understood that the number and types of devices in the communication system shown in FIGS. 1A-1C are only illustrative, and the present application is not limited thereto. In actual applications, more terminal devices and more access network devices can also be included in the communication system, and other network elements, such as network elements for implementing artificial intelligence functions, can also be included.

[0108] The related technologies of the present embodiments are described below.

[0109] 1. Key terms

[0110] Spatial layer: For a multiple-input multiple-output (MIMO) system, multiple parallel data streams can be transmitted in the same time-frequency resource by means of spatial division multiplexing, where each data stream can be referred to as a spatial layer. The spatial layer is also referred to as a data stream, or simply referred to as a stream or a layer. For a terminal device, the number of corresponding spatial layers is also referred to as rank. Generally, the number of spatial layers corresponding to a terminal device is not greater than the number of antennas of the terminal device.

[0111] SRS: SRS is an uplink reference signal sent by a terminal device to a network device. After receiving the SRS signal, the network device can obtain the UL channel of the terminal device to the network device according to the SRS signal. If there is channel reciprocity between the uplink and downlink channels (such as a time division duplexing (TDD) system), the downlink channel information of the network device to the terminal device can also be obtained by measuring the uplink channel based on the SRS. After the network device obtains the downlink channel information corresponding to the terminal device, the network device can perform data transmission resource scheduling or precoding processing on the terminal device according to the channel information. The SRS signal can contain one or more SRS ports, also known as ports or antenna ports. An SRS port is used to carry an SRS signal, and each port corresponds to an SRS signal. Different ports can be multiplexed by code division, frequency division, time division, or space division. In an implementation, one SRS resource can include SRS ports, and each SRS port corresponds to a configured time-frequency code resource. In general, each SRS port occupies different time-frequency code domain resources to reduce mutual interference. Each SRS port corresponds to a physical antenna or a virtual antenna of the terminal device.

[0112] 2. SRS transmission

[0113] The network device configures an SRS resource for the terminal device. Based on the existing new radio (NR) protocol, the number of ports in an SRS resource configured by the network device for the terminal device is determined by the parameter , which can be configured as 1, 2, 4, or 8. The multiple ports in an SRS resource correspond to different time-frequency resources or sequences to ensure the orthogonality between different ports. For an SRS port, the corresponding time-frequency resource position for transmission is configured by the network device.

[0114] The sequence of the SRS corresponding to a port p i in an SRS resource can be represented as:

[0115] wherein is an SRS base sequence, which can generally use a ZC sequence, and the specific generation method is determined according to the sequence length. v and u are the numbers of a base sequence in an SRS base sequence group. For different SRS sequence lengths, there are at least 30 base sequences that can be used. These base sequences are further divided into 30 base sequence groups, and each group corresponds to a group number u (u = 0, 1, 2, …, 29). Based on different SRS sequence lengths, each group further contains 1 or 2 base sequences, corresponding to a sequence number v (v = 0, 1). δ = log2(K TC, is the length of the SRS sequence, which is calculated as where is the number of subcarriers within one RB, m is the number of RBs occupied by the SRS in one frequency hopping transmission, and n is the number of sequence elements.

[0116] It can be seen that one SRS port corresponds to one cyclic shift (CS) in the code domain, represented by the parameter a. Specifically, for a port p in an SRS resource i , the CS a i is defined as:

[0117] wherein the parameter represents a reference position (or starting position) of the CS occupied by the multiple ports of the SRS resource allocated to the terminal device, and is configured by the RRC parameter transmissionComb. The parameter represents the maximum value of the supportable CS, or the maximum number of configurable CSs. In the current NR protocol, is jointly configured with the supportable comb degree K TC (the interval between two consecutive frequency domain units (such as subcarriers) corresponding to one SRS comb). and K TC are as shown in Table 1.

[0118] Table 1

[0119] In addition, one SRS port p i corresponds to one comb offset (CO) in the frequency domain, represented by the parameter , and the starting frequency domain position i of the SRS port p is determined according to the following formula:

[0120] wherein is configured by the higher layer signaling transmissionComb. represents the configured frequency domain RB offset, represents the frequency domain subband offset. Based on formula (2), it can be seen that for different port number values and The multiple ports of one SRS resource can be distributed on the same comb, or on two combs.

[0121] The network device also configures the time domain transmission position of the SRS through the SRS time domain configuration parameter. One SRS resource can occupy consecutive one OFDM symbol, and the specific number of symbols can be configured by high layer signaling nrofSymbols. In addition, the network device also configures the starting symbol position of SRS in a slot by high layer signaling startPosition l offset ∈{0,1,…,13}.

[0122] 3. SRS frequency hopping transmission

[0123] Considering the coverage capability of SRS is an important part of SRS design. The SRS measurement bandwidth is the total bandwidth through which the network device performs channel measurement by SRS. At each SRS transmission time, SRS can transmit signals on the entire measurement bandwidth, or only on a part of the measurement bandwidth. When transmitting signals only on a part of the measurement bandwidth, it is called that SRS performs frequency hopping transmission, and the length of the part of the bandwidth transmitted each time is the frequency hopping bandwidth.

[0124] SRS frequency hopping is an important transmission mechanism of SRS. SRS frequency hopping realizes the scanning of the measurement bandwidth through multiple SRS transmissions, and each SRS transmission only transmits a small frequency domain bandwidth, so as to double the power spectral density of SRS and improve the received signal-to-noise ratio of SRS. Through multiple SRS transmission times, the network device can obtain the channel corresponding to the entire SRS measurement bandwidth.

[0125] Referring to FIG. 2A, FIG. 2A is a schematic diagram of SRS frequency hopping occupying frequency domain resources provided by an embodiment of the present application. One grid represents one sub-band (for example, one or more RBs) in the frequency domain, the measurement bandwidth of SRS is 16 RBs, the frequency hopping bandwidth of SRS is 4 RBs, and through 4 times (corresponding to 4 transmission times T0-T3) SRS transmission, the measurement of the measurement bandwidth can be completed.

[0126] Specifically, the network device transmits configuration information to the terminal device to configure SRS resources (SRS-Resource), and the configuration information includes frequency domain configuration parameters and time domain configuration parameters. For SRS port p i , the starting position of the frequency domain may be expressed as,

[0127] wherein, nshift represents the RB offset of the SRS transmission frequency domain position, and nshift is the number of RBs offset relative to the reference frequency domain position configured by the network device through high layer signaling freqDomainShift, nsc represents the number of subcarriers contained in each RB. Frequency domain comb offset for indicating SRS occupation, i.e., the starting frequency domain position of SRS is the subcarrier offset with the first subcarrier of a RB as reference. Frequency domain offset caused by SRS frequency hopping transmission. Corresponding frequency domain offset when SRS partial transmission is configured. The network device configures the SRS measurement bandwidth and frequency hopping bandwidth through high layer signaling parameters C SRS , B SRS and b hop jointly.

[0128] Table 2

[0129] Parameter C SRS in SRS configuration parameters is used to determine a row in Table 2, parameter B SRS is used to indicate SRS frequency hopping bandwidth (corresponding to the column in Table 2), and parameter b hop determines the SRS measurement bandwidth and whether SRS frequency hopping is enabled. If b hop ≥ B SRS , it means that SRS does not perform frequency hopping transmission, and the bandwidth of each SRS transmission is the corresponding bandwidth of parameter B SRS , and the frequency domain starting offset parameter satisfies: Where n RRC is the frequency domain hopping offset parameter configured by the network device. If b hop < B SRS , it means that SRS performs frequency hopping transmission, and the bandwidth of each SRS transmission is the corresponding bandwidth of parameter B SRS , and the frequency domain starting offset parameter satisfies:

[0130] Where,

[0131] even means even number, and odd means odd number.

[0132] Taking C SRS = 18 as an example, the corresponding row in the SRS bandwidth configuration table is:

[0133] It can be seen that B SRS takes values 0-3, respectively, and the total measurement bandwidth of 72 RBs is divided according to a tree structure. FIG. 2B is a schematic diagram of an SRS bandwidth configuration provided by an embodiment of the present application. The bandwidth division under different values is shown in FIG. 2B. B SRSN0=1, means that the total measurement bandwidth is divided into one part, the SRS transmission bandwidth m SRS,0 =0, B SRS =2, N1=3,

[0134] If the network device configures B SRS =2, b hop =0, b hop <B SRS , which means that SRS frequency hopping is enabled. Wherein the SRS measurement bandwidth is The SRS frequency hopping bandwidth, or the SRS transmission bandwidth is It can be understood that the total measurement bandwidth m SRS,0 is divided into Or the frequency domain length m SRS =1 corresponding to the upper level B SRS,1 =24 RB is divided into N2=2 parts. Wherein, N b′ represents the number of frequency domain subbands corresponding to the parameter b', or the number of subbands divided by the upper level (corresponding to b'-1) frequency domain length m SRS,b′-1 . For example, N0=1 means that the number of frequency domain subbands corresponding to b'=0 is 1, and N2=2 means that the number of frequency domain subbands corresponding to b'=2 is 2.

[0135] When the configuration parameter n RRC =0, based on the above frequency hopping frequency domain starting position formula (3), the frequency domain position occupied by SRS frequency hopping transmission at this time is shown in FIG. 2C. FIG. 2C is a RB mapping diagram of SRS frequency hopping provided by an embodiment of the present application. In FIG. 2C, the RBs filled with color are the RBs occupied by the transmission bandwidth of SRS at each transmission time. For example, at transmission time 1 (T0), the transmission bandwidth of SRS occupies RB60-RB71, at transmission time 2 (T1), the transmission bandwidth of SRS occupies RB36-RB47, and so on.

[0136] As can be seen from the above description, when SRS performs frequency hopping transmission, the frequency domain resources occupied by SRS in one time domain unit are a plurality of continuous RBs, and the plurality of continuous RBs only occupy a part of the entire measurement frequency domain bandwidth. In order to obtain the channel measurement result of the entire measurement frequency domain bandwidth, one way is to wait for multiple SRS frequency hopping transmissions and collect the measurement results in the entire measurement bandwidth. As shown in FIG. 2B, B SRS =2, 6 times of SRS transmission is needed to complete the channel estimation of the entire measurement frequency domain bandwidth. When the SRS transmission period is large, or in the scene where the channel time variation is relatively severe, the equivalent channel measurement period will be doubled by multiple transmissions for channel measurement, thereby causing a large difference between the measured channel estimation result and the actual channel, resulting in serious performance loss.

[0137] Another way is to obtain the channel estimation result in the remaining bandwidth without sending reference signals by using channel frequency domain correlation through channel measurement of partial bandwidth by a small number of measurements. However, as shown in FIG. 2B, for one SRS transmission, the measurable frequency domain resources are concentrated in a continuous sub-band, which leads to difficulty in frequency domain channel interpolation or prediction based on channel correlation, and serious performance loss (performance loss is serious for extrapolation than for interpolation).

[0138] Embodiment one: based on this, referring to FIG. 3, FIG. 3 is a flowchart of a communication method provided by an embodiment of the present application, as shown in FIG. 3, the method includes the following steps:

[0139] 201. The network device sends first information, the first information is associated with the number K of frequency domain sub-bands corresponding to the first time domain unit. Correspondingly, the terminal device receives the first information.

[0140] Among them, the frequency domain sub-band includes at least one resource block RB, and the K frequency domain sub-bands are discontinuous in the frequency domain, and K is an integer greater than 1.

[0141] In this embodiment, the first time domain unit refers to the minimum time domain granularity corresponding to frequency hopping transmission. Alternatively, the first time domain unit is the time domain resource (or the corresponding orthogonal frequency division multiplexing (OFDM) symbol) corresponding to one frequency hopping transmission occasion. The first time domain unit can be one or more OFDM symbols. For example, assuming that SRS needs to be transmitted on one OFDM symbol in each frequency hopping transmission occasion, the first time domain unit is the one OFDM symbol. For another example, when SRS is repeatedly transmitted, SRS is transmitted on multiple OFDM symbols in the frequency hopping transmission occasion; or when the number of SRS ports is 8, SRS can be transmitted on 2 OFDM symbols in the frequency hopping transmission occasion, in these cases, the first time domain unit corresponds to multiple OFDM symbols.

[0142] The frequency domain subband corresponding to the first time domain unit refers to the continuous frequency domain units on the first time domain unit for transmitting the SRS. The frequency domain unit refers to the minimum frequency domain granularity for transmitting the SRS, and in this embodiment, one frequency domain unit corresponds to one RB. One frequency domain subband can include one or more RBs. When the frequency domain subband includes multiple RBs, the multiple RBs are continuous in the frequency domain. Alternatively, when two RBs are both used for transmitting the SRS but have a frequency domain interval therebetween, the two RBs belong to two different frequency domain subbands. For example, the frequency domain units on the first time domain unit for transmitting the SRS include RB0-RB5 and RB7, RB10-RB13, and the first time domain unit includes three frequency domain subbands for transmitting the SRS.

[0143] The network device sends the first information to the terminal device, where the first information includes a parameter related to the number K of frequency domain subbands. The first information can be RRC signaling. K is an integer greater than 1, that is, the number of subbands corresponding to the first time domain unit is greater than 1.

[0144] Optionally, the first information includes a first configuration parameter, parameter B SRS , and parameter b hop , when b hop <B SRS , the number K of frequency domain subbands is determined according to the first configuration parameter.

[0145] The parameters B SRS and b hop are related parameters in the SRS frequency domain bandwidth configuration table in Table 2. B SRS may be used to determine the frequency hopping bandwidth, B SRS and b hop may be used to determine whether to transmit the SRS by frequency hopping. The two parameters are configured by RRC signaling. Then, the first configuration parameter and the parameters B SRS and b hop may be the same RRC signaling message or different RRC signaling messages. When b hop <B SRS , it indicates that the SRS is transmitted by frequency hopping, and the SRS is specifically transmitted on the K subbands of the first time domain unit. The first configuration parameter can directly indicate the value of K.

[0146] When the first configuration parameter directly indicates the value of K, the value of the first configuration parameter is greater than 1. Furthermore, since frequency hopping transmission occurs across the entire measurement bandwidth, there are idle frequency domain units (not used for SRS transmission) in the first time domain unit. Therefore, the difference between the first configuration parameter and the measurement bandwidth is less than or equal to K-1 RBs (within the same time domain unit, there must be at least one RB between every two adjacent sub-bands; two adjacent sub-bands mean there are no other sub-bands in between). That is, 1 < first configuration parameter ≤ measurement bandwidth - (K-1).

[0147] Optionally, the first information includes the second configuration parameter b. SRS Parameter B SRS and parameter b hop When b hop SRS At that time, the number of frequency domain subbands N b′ This represents the number of frequency domain subbands corresponding to parameter b′, b SRS Less than or equal to B SRS .

[0148] Similarly, when b hop SRS When it indicates frequency hopping transmission of SRS, SRS is specifically transmitted on K sub-bands of the first time domain unit.

[0149] The second configuration parameter indicated in the first information is b. SRS b SRS greater than or equal to 0 and less than or equal to B SRS The value. The total measurement bandwidth is divided into SRS transmission is performed. Number of subbands on the first time domain unit. Then at least need to Only on the first time domain unit can the SRS transmission of the entire measurement bandwidth be completed.

[0150] 202. The terminal device transmits pilot signals on K frequency sub-bands. Correspondingly, the network device receives pilot signals on K frequency sub-bands.

[0151] A pilot signal is a known signal provided by the transmitter to the receiver for channel estimation or channel sounding. In this embodiment, the pilot signal is the SRS.

[0152] ​​After receiving the first information, the terminal device can determine the number of subbands K, and then transmit SRS on the K subbands. Specifically, the terminal device can transmit SRS on the K subbands of the specified first time domain unit. Or the terminal device can continuously transmit SRS on the K subbands of each time domain unit according to a preset period. The network device can also know the number of subbands K on the first time domain unit, and receive SRS on the K subbands. According to the received SRS, uplink channel measurement is performed. Or downlink channel measurement is also performed.

[0153] It can be seen that the present application configures K subbands discontinuous in the frequency domain for the terminal device in the same time domain unit, so that the terminal device transmits SRS on the K subbands. When the network device performs channel measurement based on the SRS transmitted by hopping, since the SRS is scattered in the measurement bandwidth, the base station performs interpolation channel estimation on the remaining unmeasured subbands based on the scattered SRS, which is more conducive to the interpolation estimation of the frequency domain channel using adjacent SRS subbands, and can effectively improve the accuracy of the channel measurement result and improve the measurement performance.

[0154] Embodiment two: The above embodiment one proposes that the number of frequency domain subbands corresponding to the first time domain unit can be indicated by the first configuration parameter or the second configuration parameter in the first information. This embodiment specifically introduces the case of indicating the number of frequency domain subbands K by the first configuration parameter.

[0155] Referring to FIG. 4A, FIG. 4A is a flowchart of another communication method provided by the present application, which comprises:

[0156] 301. The network device transmits first information, and the first information includes a first configuration parameter. Correspondingly, the terminal device receives the first information.

[0157] In addition, the first information can also include a parameter B SRS and a parameter b hop When b hop <B SRS , the first configuration parameter is used to indicate the number of frequency domain subbands K on the first time domain unit.

[0158] The frequency domain subband includes at least one resource block RB, and the K frequency domain subbands are discontinuous in the frequency domain, and K is an integer greater than 1.

[0159] As described in the above embodiment one, the first configuration parameter, B SRS and b hop , can be transmitted in the first information, and when b hop <B SRSWhen the frequency hopping transmission is indicated, the number K of frequency domain subbands on the first time domain unit can be directly determined according to the first configuration parameter. After the number K of frequency domain subbands is determined, the number of RBs (frequency domain units) included in each frequency domain subband K can be further determined.

[0160] Optionally, the number of RBs included in each of the K frequency domain subbands is the same.

[0161] Optionally, the number of RBs in each frequency domain subband is is determined based on C SRS and B SRS .

[0162] Exemplarily, in the embodiment, the frequency hopping bandwidth on the first time domain unit for transmitting the SRS is determined based on C SRS and B SRS , and is represented as The number of RBs included in each of the K frequency domain subbands is the same, and the number of RBs in each frequency domain subband is that is, the frequency hopping bandwidth on the first time domain unit is evenly divided into K parts. The setting of K also needs to make the number of RBs in each frequency domain subband an integer.

[0163] The embodiment is based on the existing SRS frequency domain bandwidth configuration table, and the first configuration parameter is further transmitted to indicate that the SRS mapped on the measurement bandwidth is transmitted through K frequency domain subbands. Taking C SRS =13 as an example, the corresponding SRS bandwidth configuration table is as follows:

[0164] Table 3

[0165] The network device indicates C SRS =13, B SRS =3, and b hop =0. The terminal device transmits the SRS in one time domain unit, and the corresponding frequency hopping bandwidth of the SRS is m SRS,3 =4 RB, and the corresponding SRS measurement bandwidth is m SRS,0 =48 RB. The frequency domain starting offset parameter of the SRS transmission satisfies: where n RRC is the frequency hopping frequency domain offset parameter configured by the network device. If b hop <B SRS , it indicates that the SRS performs frequency hopping transmission, and the bandwidth of each SRS transmission is the parameter B SRS corresponding bandwidth. Without dividing the K frequency domain subbands, the frequency domain starting offset parameter of the SRS transmission satisfies the foregoing formula (4) and formula (5).

[0166] Referring to FIG. 4B, FIG. 4B is a schematic diagram of a time-frequency resource mapping method of SRS frequency hopping transmission provided by an embodiment of the present application. As shown in (a) of FIG. 4B, when K frequency domain subbands are not divided (or K = 1), only 4 consecutive RBs in 48 RBs to be measured are mapped and transmitted with SRS in one SRS transmission occasion. A total of 12 SRS transmissions are required to complete the channel measurement of 48 RBs.

[0167] In the embodiment, K frequency domain subbands are divided on one time domain unit. The total number of RBs occupied by the K frequency domain subbands is equal to the frequency hopping bandwidth.

[0168] As shown in (b) of FIG. 4B, when the first configuration parameter is 2 and K = 2, the number of RBs in each frequency domain subband is K(RB) = 4 / 2 = 2 RBs. Alternatively, as shown in (c) of FIG. 4B, when K = 4, the number of RBs in each frequency domain subband is K(RB) = 4 / 4 = 1 RB.

[0169] After determining the number of RBs in each frequency domain subband in the K frequency domain subbands on the first time domain unit, the frequency domain interval between every two adjacent frequency domain subbands can be determined. Alternatively, the frequency domain interval between the kth frequency domain subband and the (k+1)th frequency domain subband is the same when k is any value in 0 to K-1.

[0170] For example, the frequency domain interval between the kth frequency domain subband and the (k+1)th frequency domain subband, such as the frequency domain interval between the 1st frequency domain subband and the 2nd frequency domain subband and the frequency domain interval between the 2nd frequency domain subband and the 3rd frequency domain subband, is the same when k is any value in 0 to K-1, that is, the frequency domain interval between every two adjacent frequency domain subbands is the same. In the embodiment, the frequency domain interval between the adjacent two frequency domain subbands refers to the number of RBs between the first RB not included in the former frequency domain subband after the former frequency domain subband and the last RB not included in the latter frequency domain subband before the latter frequency domain subband.

[0171] For example, the frequency domain unit on the first time domain unit is equally divided by the K frequency domain subbands, and the frequency domain interval between the kth frequency domain subband and the (k+1)th frequency domain subband is wherein, is the measurement bandwidth, is the frequency hopping bandwidth, and the frequency domain unit on the first time domain unit not used for transmitting SRS is equally divided into K parts as the frequency domain interval between adjacent frequency domain subbands in the K frequency domain subbands. For example, as shown in (b) of FIG. 4B, is 48 RBs, is 4 RBs, and the frequency domain interval of the frequency domain subband is (48-4) / 2 = 22 RBs when K = 2. Alternatively, as shown in (c) of FIG. 4B, the frequency domain interval of the frequency domain subband is (48-4) / 4 = 11 RBs when K = 4.

[0172] Further, after determining the frequency domain interval of adjacent frequency domain subbands in the K frequency domain subbands, the frequency domain starting position of each frequency domain subband can also be determined. The frequency domain starting position corresponding to the kth frequency domain subband satisfies:

[0173] wherein represents the number of subcarriers contained in each RB, b is a value greater than or equal to 0 and less than or equal to B SRS , and n b is a frequency domain starting offset parameter.

[0174] The frequency domain starting offset parameter n b satisfies:

[0175] wherein n RRC is a frequency hopping frequency domain offset parameter configured by the network device. Wherein,

[0176] b' is a value greater than or equal to b hop and less than or equal to b, and n SRS is a transmission number index.

[0177] 302. The terminal device transmits a pilot signal on the K frequency domain subbands. Correspondingly, the network device receives the pilot signal on the K frequency domain subbands.

[0178] In the above K frequency domain subbands, the number of RBs included in each frequency domain subband is the same; or the frequency domain interval of adjacent frequency domain subbands is the same, etc. The information can be configured by the network device sending the second information, or can be agreed by the protocol, or be a default setting, etc. The terminal device determines the frequency domain resources occupied by the K frequency domain subbands for frequency hopping SRS transmission based on the information, and transmits SRS on the frequency domain resources of the K frequency domain subbands. The network device also determines the frequency domain resources occupied by the K frequency domain subbands based on the related configuration of the K frequency domain subbands, and receives SRS on the frequency domain resources of the K frequency domain subbands. Then the network device can perform uplink channel measurement according to the received SRS. Or also perform downlink channel measurement.

[0179] It can be seen that, in the embodiment of the present application, the first configuration parameter sent by the network device indicates K frequency domain subbands on the first time domain unit, the same number of RBs is configured for each of the K frequency domain subbands on the first time domain unit, and the same frequency domain interval is configured for adjacent frequency domain subbands, which can make the multiple frequency domain subbands for frequency hopping transmission of SRS more uniformly distributed on the first time domain unit, make the interpolation channel estimation of the remaining unmeasured subbands based on the measured subbands, and make the adjacent SRS subbands more conducive to the interpolation estimation of the frequency domain channel, thereby effectively improving the accuracy of the channel measurement result and improving the measurement performance. In addition, the SRS transmitted and measured in each time domain unit in the process is unchanged, which guarantees the compatibility.

[0180] Embodiment three: this embodiment specifically introduces the case of indicating the number K of frequency domain subbands through the second configuration parameter.

[0181] Referring to FIG. 5A, FIG. 5A is a flowchart of another communication method provided by the embodiment of the present application, and the method comprises:

[0182] 401. The network device sends first information, and the first information comprises a second configuration parameter b SRS . Correspondingly, the terminal device receives the first information.

[0183] The first information can also comprise a parameter B SRS and a parameter b hop , when b hop <B SRS , the second configuration parameter is used to determine the number K of frequency domain subbands on the first time domain unit.

[0184] The frequency domain subband comprises at least one resource block RB, and the K frequency domain subbands are discontinuous in the frequency domain, and K is an integer greater than 1.

[0185] As described in the foregoing embodiment one, the second configuration parameter b SRS , B SRS and b hop may be sent in the first information, when b hop <B SRS , frequency hopping transmission is indicated, and at this time the number K of frequency domain subbands on the first time domain unit can be determined according to b SRS . Specifically, N b′ represents the number of frequency domain subbands contained between the b SRS th level and the B SRS th level, b SRS is less than or equal to B SRS .

[0186] Optionally, the number of RBs included in each of the K frequency domain subbands is the same.

[0187] Optionally, the number of RBs in each frequency domain subband is C SRS and B SRS determined frequency hopping bandwidth.

[0188] Exemplarily, in the embodiment, the frequency hopping bandwidth is determined based on C SRS and B SRS in the SRS frequency domain bandwidth configuration table, and is expressed as The number of RBs included in each frequency domain subband is That is, the number of RBs occupied by the SRS transmitted in each time domain unit is: SRS is transmitted K times on each time domain unit.

[0189] Further, assuming that SRS is transmitted according to K frequency domain subbands on a plurality of continuous time domain units, since the number of frequency domain subbands contained between 0 and B SRS level is The number of frequency domain subbands included in each time domain unit is At least through sending occasions, the transmission of all SRSs mapped on the measurement single width can be completed.

[0190] Similarly, taking C SRS = 13 as an example, the corresponding SRS bandwidth configuration table is:

[0191] Table 3

[0192] The corresponding SRS measurement bandwidth is m SRS,0 = 48 RB. In the case of b SRS = 1, the number of frequency domain subbands on each time domain unit is The number of frequency domain subbands contained between 0 and B SRS level is N0N1N2N3 = 1*2*2*3 = 12. At least 12 / 2 = 6 time domain units (sending occasions) are required to completely measure the transmission of SRS on the single width.

[0193] Referring to FIG. 5B, FIG. 5B is a schematic diagram of a time-frequency resource mapping method for SRS frequency hopping transmission provided by an embodiment of the present application, as shown in (a) of FIG. 5B, when K frequency domain subbands are not divided (or K = 1), in one SRS sending occasion, only the continuous 4 RBs in one frequency domain subband in the 48 RBs to be measured are mapped and transmitted. A total of 12 SRS sending occasions are required to complete the channel measurement of 48 RBs.

[0194] In the embodiment, K frequency domain subbands are divided on the time domain unit. And the number of RBs occupied by each frequency domain subband = frequency hopping bandwidth.

[0195] As shown in (b) of FIG. 5B, the network device indicates the second configuration parameter b SRS = 1, The number of RBs in each frequency domain subband K(RB) = 4RB, and 4*2 = 8 RBs of the SRS to be measured can be transmitted on each time domain unit. Then, 48 / 8 = 6 transmission occasions are needed to complete the channel measurement of 48 RBs.

[0196] Alternatively, as shown in (c) of FIG. 4B, the network device indicates the second configuration parameter b SRS = 2, The number of RBs in each frequency domain subband K(RB) = 4RB, and 4*4 = 16 RBs of the SRS to be measured can be transmitted on each time domain unit. Then, 48 / 16 = 3 transmission occasions are needed to complete the channel measurement of 48 RBs.

[0197] After determining the number of RBs in each frequency domain subband in the K frequency domain subbands on the first time domain unit, the frequency domain interval of each two adjacent frequency domain subbands can also be determined. Alternatively, the frequency domain interval of the kth frequency domain subband and the (k+1)th frequency domain subband is the same when k is any value in 0 to K-1.

[0198] For example, the frequency domain interval of the kth frequency domain subband and the (k+1)th frequency domain subband, such as the first frequency domain subband and the second frequency domain subband, the second frequency domain subband and the third frequency domain subband, is the same when k is any value in 0 to K-1. That is, the frequency domain units on the first time domain unit are evenly divided into K frequency domain subbands, and the frequency domain interval of the kth frequency domain subband and the (k+1)th frequency domain subband is wherein, is the measurement bandwidth, is the frequency hopping bandwidth. The frequency domain units on the first time domain unit that are not used for transmitting the SRS are evenly divided into K parts as the frequency domain interval of the adjacent frequency domain subbands in the K frequency domain subbands. For example, as shown in (b) of FIG. 5B, is 48RB, is 4RB, b SRS = 1, K = 2, the frequency domain interval of the frequency domain subband is (48-4*2) / 2 = 20RB. Alternatively, as shown in (c) of FIG. 5B, b SRS = 2, K = 4, the frequency domain interval of the frequency domain subband is (48-4*4) / 4 = 8RB.

[0199] Further, after determining the frequency domain interval of the adjacent frequency domain subbands in the K frequency domain subbands, the frequency domain starting position of each frequency domain subband can also be determined. The frequency domain starting position corresponding to the kth frequency domain subband satisfies:

[0200] wherein denotes the number of subcarriers contained in each RB, b is a value greater than or equal to 0 and less than or equal to B SRS , n b is a frequency domain starting offset parameter.

[0201] The frequency domain starting offset parameter satisfies:

[0202] wherein n RRC is a frequency hopping frequency domain offset parameter configured by the network device. Wherein,

[0203] b' is a value greater than or equal to b hop and less than or equal to b, n SRS is a transmission times index.

[0204] 402、The terminal device transmits the pilot signal on K frequency domain subbands. Correspondingly, the network device receives the pilot signal on K frequency domain subbands.

[0205] In the above K frequency domain subbands, the number of RBs included in each frequency domain subband is the same; or the frequency domain interval of adjacent frequency domain subbands is the same, etc. The information can be configured by the network device sending the second information, or can be agreed by the protocol, or be a default setting, etc. The terminal device determines the frequency domain resources occupied by the K frequency domain subbands for frequency hopping SRS transmission based on the information, and transmits SRS on the frequency domain resources of the K frequency domain subbands. The network device also determines the frequency domain resources occupied by the K frequency domain subbands based on the related configuration of the K frequency domain subbands, and receives SRS on the frequency domain resources of the K frequency domain subbands. Then the network device can perform uplink channel measurement according to the received SRS. Or also perform downlink channel measurement.

[0206] It can be seen that, in the embodiments of the present application, the second configuration parameter sent by the network device determines the K frequency domain subbands on the first time domain unit, the same number of RBs is configured for each of the K frequency domain subbands on the first time domain unit, and the same frequency domain interval is configured for adjacent frequency domain subbands, which can make the multiple frequency domain subbands for frequency hopping transmission of SRS more uniformly distributed on the first time domain unit, further improve the accuracy of interpolation channel estimation of the remaining unmeasured subbands based on the measured subbands, and further improve the measurement performance. In addition, since the number of RBs occupied by each frequency domain subband is equal to the frequency hopping bandwidth, on the one hand, it can ensure that the performance of each SRS channel estimation is not affected; on the other hand, the to-be-measured SRS corresponding to the frequency hopping bandwidth can be sent multiple times in one transmission occasion, so that the number of time domain units required to complete the measurement bandwidth scanning is reduced, and the efficiency of channel measurement is improved. Or, in the case of fixed time domain unit for receiving SRS, more SRS measurement can be completed, and the channel measurement accuracy is improved.

[0207] Please refer to FIG. 6, which is a structural schematic diagram of a communication apparatus provided in an embodiment of the present application. The communication apparatus can be used to execute any of the methods in the foregoing embodiments.

[0208] As shown in FIG. 6, the communication apparatus includes a processing module 1501 and a transceiver module 1502. The processing module 1501 can be one or more processors, and the transceiver module 1502 can be a transceiver or a communication interface. The communication apparatus can be used to implement the functions of the devices such as the first device and the second device involved in any of the method embodiments. These devices can be hardware devices, software functions running on special hardware, or virtualized functions instantiated on a platform (for example, a cloud platform). Optionally, the communication apparatus can further include a storage module 1503 for storing the program code and data of the communication apparatus.

[0209] In a first example, the communication apparatus can be used as a terminal device or a chip in a terminal device in Embodiment 1-Embodiment 3, and execute the steps executed by the terminal device in the method embodiments. The transceiver module 1502 is used to support communication with network devices and the like. The processing module 1501 can be used to support the actions in the method embodiments executed by the terminal device other than sending and receiving.

[0210] Specifically, the transceiver module 1502 is configured to receive first information associated with the number K of frequency domain subbands corresponding to the first time domain unit, the frequency domain subband including at least one resource block RB, and the K frequency domain subbands being discontinuous in the frequency domain, K being an integer greater than 1; and the processing module 1501 is configured to send a pilot signal on the K frequency domain subbands in combination with the transceiver module 1502.

[0211] In an implementation, when the multiple RBs are included in a frequency domain subband, the multiple RBs are continuous in the frequency domain.

[0212] In an implementation, the first information includes a first configuration parameter B SRS , and a parameter b hop , when b hop <B SRS , the number K of the frequency domain subbands is determined according to the first configuration parameter.

[0213] In an implementation, the first information includes a second configuration parameter b SRS , a parameter B SRS , and a parameter b hop , when b hop <B SRS , the number K of the frequency domain subbands is determined according to the second configuration parameter. N b′ represents the number of frequency domain subbands corresponding to the parameter b′, b SRS is less than or equal to B SRS .

[0214] In an implementation, B SRS is used to indicate a frequency hopping bandwidth, and b hop is used to determine whether to transmit the pilot signal in frequency hopping mode in combination with B SRS .

[0215] In an implementation, the number of RBs included in each of the K frequency domain subbands is the same.

[0216] In an implementation, the first information further includes a parameter C SRS , and the number of RBs in each frequency domain subband is is a frequency hopping bandwidth determined based on C SRS and B SRS . is an integer.

[0217] In an implementation, the first information further includes a parameter C SRS , and the number of RBs in each frequency domain subband is is a frequency hopping bandwidth determined based on C SRS and B SRS .

[0218] In an implementation, the frequency domain interval between the kth frequency domain subband and the k+1th frequency domain subband is the same when k is any value from 0 to K-1.

[0219] In one feasible implementation, the frequency domain spacing between the k-th frequency domain sub-band and the (k+1)-th frequency domain sub-band is... For C SRS The measured bandwidth is defined; the starting position of the frequency domain corresponding to the k-th frequency domain sub-band satisfies:

[0220] k can be any value from 0 to K-1; This represents the number of subcarriers contained in each RB, where b is greater than or equal to 0 and less than or equal to B. SRS The value of n b This is the frequency domain starting offset parameter.

[0221] In one feasible implementation, the frequency domain start offset parameter n b satisfy:

[0222] Where n RRC The frequency hopping offset parameter configured for network devices, where,

[0223] b′ is greater than or equal to b hop And the value of n is less than or equal to b. SRS The number of times the message was sent is indexed.

[0224] In one feasible implementation, the frequency domain spacing between the k-th frequency domain sub-band and the (k+1)-th frequency domain sub-band is... For C SRS The measured bandwidth is defined; the starting position of the frequency domain corresponding to the k-th frequency domain sub-band satisfies:

[0225] k can be any value from 0 to K-1; This represents the number of subcarriers contained in each RB, where b is greater than or equal to 0 and less than or equal to B. SRS The value of n b This is the frequency domain starting offset parameter.

[0226] In one feasible implementation, the frequency domain start offset parameter satisfies:

[0227] Where n RRC The frequency hopping offset parameter configured for network devices, where,

[0228] b′ is greater than or equal to b hop And the value of n is less than or equal to b. SRS Index for the number of times the message was sent.

[0229] In a second example, the communication apparatus can be a network device or a chip in a network device in Embodiment One to Embodiment Three, and perform the steps performed by the network device in the method embodiments. The transceiver module 1502 is configured to support communication with the terminal device. The processing module 1501 is configured to support the actions of the network device in the method embodiments, except for sending and receiving.

[0230] Specifically, the transceiver module 1502 is configured to send first information, the first information being associated with a number K of frequency domain subbands corresponding to a first time domain unit, the frequency domain subbands including at least one resource block RB, and the K frequency domain subbands being discontinuous in the frequency domain, K being an integer greater than 1; and the transceiver module 1502 is further configured to receive a pilot signal on the K frequency domain subbands.

[0231] Please refer to FIG. 7, which is a structural schematic diagram of a simplified network device provided by an embodiment of the present application, which can be an implementation of the network device of the present application.

[0232] The network device includes a radio frequency signal transceiving and conversion part and a baseband part 42. The radio frequency signal transceiving and conversion part includes a receiving module 41 part and a sending module 43 part (which can also be collectively referred to as a transceiver module). The radio frequency signal transceiving and conversion part is mainly used for the transceiving of radio frequency signals and the conversion between radio frequency signals and baseband signals; the baseband part 42 is mainly used for baseband processing and controlling the network device, etc. The receiving module 41 can also be referred to as a receiver, a receiver, a receiving circuit, etc. The sending module 43 can also be referred to as a transmitter, a transmitter, a transmitter, a transmitting circuit, etc. The baseband part 42 is usually the control center of the network device, which can also be referred to as a processing module, and is used to perform the steps performed by the network device in any of the above methods. For details, please refer to the description of the related parts above. The sending module 43 can include an antenna and a radio frequency circuit. The radio frequency circuit is mainly used for the conversion between baseband signals and radio frequency signals and the processing of radio frequency signals. The antenna is mainly used for the transceiving of radio frequency signals in the form of electromagnetic waves.

[0233] The baseband part 42 can include one or more single boards, each of which can include one or more processors and one or more memories, the processors being used to read and execute the programs in the memories to realize the baseband processing function and control the network device. If there are multiple single boards, the single boards can be interconnected to increase the processing capacity. As an optional implementation, multiple single boards can also share one or more processors, or multiple single boards can share one or more memories, or multiple single boards can share one or more processors at the same time.

[0234] Please refer to FIG. 8, which is a structural schematic diagram of a simplified UE provided by an embodiment of the present application, which can be an implementation of the terminal device in the present application.

[0235] For the convenience of understanding and illustration, in FIG. 8, the UE takes a mobile phone as an example. As shown in FIG. 8, the UE includes at least one processor, and can further include a radio frequency circuit, an antenna, and an input and output device. The processor can be used to process a communication protocol and communication data, and can also be used to control the UE, execute a software program, process data of the software program, and the like. The UE can further include a memory, which is mainly used to store software programs and data. The programs involved can be loaded into the memory when the communication device is manufactured, or can be loaded into the memory at a later time when needed. The radio frequency circuit is mainly used for conversion between a baseband signal and a radio frequency signal and processing of the radio frequency signal. The antenna is mainly used for receiving and transmitting radio frequency signals in the form of electromagnetic waves. The input and output device, such as a touch screen, a display screen, a keyboard, and the like, is mainly used for receiving user input data and outputting data to the user. It should be noted that some types of UE can not have an input and output device.

[0236] When a signal needs to be sent, the processor performs baseband processing on the data to be sent, and outputs a baseband signal to the radio frequency circuit. The radio frequency circuit performs radio frequency processing on the baseband signal, and transmits the radio frequency signal in the form of electromagnetic waves through the antenna. When data is sent to the UE, the radio frequency circuit receives the radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor. The processor converts the baseband signal into data and processes the data. For the convenience of illustration, only one memory and one processor are shown in FIG. 8. In actual UE products, there can be one or more processors and one or more memories. The memory can also be referred to as a storage medium or a storage device, etc. The memory can be independent of the processor, or can be integrated with the processor. The embodiments of the present application do not limit this.

[0237] In the embodiments of the present application, the antenna and the radio frequency circuit with transceiving functions can be regarded as a receiving unit and a sending unit (which can also be collectively referred to as a transceiving unit) of the UE, and the processor with processing functions can be regarded as a processing unit of the UE. As shown in FIG. 8, the UE includes a receiving module 31, a processing module 32, and a sending module 33. The receiving module 31 can also be referred to as a receiver, a receiver, a receiving circuit, etc. The sending module 33 can also be referred to as a transmitter, a transmitter, a transmitter, a transmitting circuit, etc. The processing module 32 can also be referred to as a processor, a processing board, a processing device, etc.

[0238] It can be understood that the processor in the embodiments of the present application can be a central processing unit (CPU), and can also be other general-purpose processors, digital signal processors (DSPs), application specific integrated circuits (ASICs), field programmable gate arrays (FPGAs) or other programmable logic devices, transistor logic devices, hardware components or any combination thereof. The general-purpose processor can be a microprocessor or any conventional processor.

[0239] Optionally, the memory can also store data. The processor and the memory can be separately arranged or integrated together. The memory can be a non-volatile memory such as a hard disk drive (HDD) or a solid-state drive (SSD), and can also be a volatile memory such as a random-access memory (RAM). The processor in the embodiments of the present application can also be a flash memory, a read-only memory (ROM), a programmable ROM (PROM), an erasable PROM (EPROM), an electrically EPROM (EEPROM), a register, a hard disk, a mobile hard disk, a CD-ROM or any other form of storage medium well known in the art.

[0240] Optionally, the UE can include instructions (which can also be referred to as code or programs at times) that can be run on the processor.

[0241] Optionally, the UE can also include a transceiver and an antenna. The transceiver can be referred to as a transceiving unit, a transceiving module, a transceiver, a transceiving circuit, a transceiver, an input / output interface, etc., and is used to realize the transceiving function of the UE through the antenna.

[0242] Please refer to FIG. 9, which is a schematic diagram of a chip 1000 structure provided by an embodiment of the present application, as an implementation manner of a terminal device chip or a network device chip. The communication apparatus includes a communication interface and a processor 1002. The communication interface and the processor 1002 are coupled with each other. The communication interface can be a transceiver or an input / output interface, and can also be an interface circuit 1001 such as a transceiver circuit. Optionally, the communication apparatus can further include a memory 1003 for storing instructions executed by the processor or storing input data required by the processor for running instructions or storing data generated after the processor runs instructions.

[0243] An embodiment of the present application provides a communication system, which includes the terminal device and the network device.

[0244] An embodiment of the present application provides a computer readable storage medium, which stores computer instructions, and when the computer instructions are executed, the computer executes the method in any of the above methods.

[0245] An embodiment of the present application provides a computer program product, which includes computer program codes, and when the computer program codes are run by a computer, the computer program codes make the computer execute the method in any of the above methods.

[0246] An embodiment of the present application provides a chip, which is coupled with a memory, and is used for reading and executing program instructions in the memory, so that the apparatus where the chip is located implements the method in any of the above methods.

[0247] In the above embodiments, the description of each embodiment has its own focus, and the parts not described in detail in an embodiment can be referred to the related description of other embodiments. It should be noted that, for the above method embodiments, in order to simply describe, each is described as a series of action combinations, but those skilled in the art should know that the present application is not limited to the action order described, because according to the present application, some steps can be performed in other order or simultaneously. Secondly, those skilled in the art should know that the embodiments described in the specification all belong to preferred embodiments, and the actions and modules involved are not necessarily required by the present application.

[0248] In several embodiments provided in the present application, it should be understood that the disclosed apparatus can be implemented in other manners. For example, the division of the apparatus embodiments is merely illustrative, and the division of the units can be changed according to actual conditions, such as a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the displayed or discussed mutual couplings or direct couplings or communication connections can be indirect couplings or communication connections through some interfaces, devices or units, and can be in electrical, mechanical or other forms.

[0249] The units described as separate components can or can not be physically separate, and the components shown as units can or can not be physical units, i.e., can be located in one place or distributed on multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the embodiments.

[0250] The above description and the above embodiments are merely used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can still be modified, or some technical features can be replaced by equivalents; and these modifications or replacements do not make the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

A communication method characterized by comprising: The method comprises: receiving first information associated with a number K of frequency domain subbands corresponding to a first time domain unit, the frequency domain subbands comprising at least one resource block (RB) and the K frequency domain subbands being discontinuous in the frequency domain, K being an integer greater than 1; transmitting a pilot signal on the K frequency domain subbands. The method of claim 1, wherein The first time domain unit corresponds to one frequency hopping transmission occasion. The method of claim 1, wherein The first information includes a first configuration parameter, parameter B SRS , and parameter b hop . When b hop <B SRS , the number K of the frequency domain subbands is determined according to the first configuration parameter. The method of claim 1, wherein The first information includes a second configuration parameter b SRS , parameter B SRS , and parameter b hop , when b hop <B SRS , the number of frequency domain subbands Nb' denotes the number of frequency domain subbands corresponding to the parameter b' SRS less than or equal to B SRS . The method according to claim 3 or 4, characterized in that B SRS for indicating a frequency hopping bandwidth, b hop for determining whether to transmit the pilot signal with frequency hopping in combination with B SRS hopping. The method according to any one of claims 1 to 5, characterized in that Each of the K frequency domain subbands comprises the same number of RBs. The method according to claim 6, characterized in that The first information further includes a parameter C SRS The number of RBs in each frequency domain sub-band is C SRS and B SRS a determined frequency hopping bandwidth; K is an integer. The method of claim 7, wherein The first information further includes a parameter C SRS The number of RBs in each frequency domain sub-band is C SRS and B SRS determined frequency hopping bandwidth. The method according to any one of claims 1 to 8, characterized in that When k is any value from 0 to K-1, the kth frequency domain subband and the k+1th frequency domain subband have the same frequency domain interval. The method of claim 9, wherein The frequency domain interval between the kth frequency domain sub-band and the k+1th frequency domain sub-band is C SRS a determined measurement bandwidth; a frequency domain starting position corresponding to the kth frequency domain sub-band satisfies: k is any value from 0 to K-1 ; This represents the number of subcarriers contained in each RB, where b is greater than or equal to 0 and less than or equal to B. SRS The value of n b This is the frequency domain starting offset parameter. The method of claim 10, wherein The frequency domain start offset parameter n b satisfies: wherein n RRC is a frequency hopping frequency domain offset parameter configured for the network device, wherein, b' is a value greater than or equal to b hop and less than or equal to b, n SRS is the number of transmissions index. The method of claim 9, wherein The frequency domain interval between the kth frequency domain sub-band and the k+1th frequency domain sub-band is C SRS a determined measurement bandwidth; a frequency domain starting position corresponding to the kth frequency domain sub-band satisfies: k is any value from 0 to K-1 ; denotes the number of subcarriers contained in each RB, b is greater than or equal to 0 and less than or equal to B SRS the value of n b is a frequency domain start offset parameter. The method of claim 12, wherein The frequency domain starting offset parameter satisfies: wherein n RRC a frequency hopping frequency domain offset parameter configured for the network device, wherein, b' is a value greater than or equal to b hop and less than or equal to b, n SRS is a transmission number index. A communication method characterized by comprising: The method comprises: transmitting first information associated with a number K of frequency domain subbands corresponding to a first time domain unit, the frequency domain subbands comprising at least one resource block (RB) and the K frequency domain subbands being discontinuous in the frequency domain, K being an integer greater than 1; receiving a pilot signal on the K frequency domain subbands. The method of claim 14, wherein The first information includes a first configuration parameter, parameter B SRS , and parameter b hop . When b hop <B SRS , the first configuration parameter is used to determine the number K of the frequency domain subbands. The method of claim 14, wherein The first information includes a second configuration parameter b SRS , parameter B SRS , and parameter b hop When b hop <B SRS , the number of frequency domain subbands Nb' denotes the number of frequency domain subbands corresponding to the parameter b' SRS less than or equal to B SRS . The method according to claim 15 or 16, characterized in that B SRS for indicating a frequency hopping bandwidth, b hop for determining whether to transmit the pilot signal by frequency hopping in combination with B SRS hopping. The method according to any one of claims 15-18, characterized in that Each of the K frequency domain subbands comprises the same number of RBs. The method of claim 18, wherein The first information further includes a parameter C SRS The number of RBs in each frequency domain sub-band is C SRS and B SRS determined frequency hopping bandwidth; K is an integer. The method of claim 18, wherein The first information further includes a parameter C SRS The number of RBs in each frequency domain sub-band is C SRS and B SRS determined frequency hopping bandwidth. The method according to any one of claims 14-20, characterized in that When k is any value from 0 to K-1, the kth frequency domain subband and the k+1th frequency domain subband have the same frequency domain interval. The method of claim 21, wherein The frequency domain interval between the kth frequency domain sub-band and the k+1th frequency domain sub-band is C SRS a determined measurement bandwidth; a frequency domain starting position corresponding to the kth frequency domain sub-band satisfies: k is any value from 0 to K-1 ; denotes the number of subcarriers contained in each RB, b is a value greater than or equal to 0 and less than or equal to B SRS n is a frequency domain start offset parameter. b n is a frequency domain start offset parameter. The method of claim 22, wherein The frequency domain start offset parameter n b satisfies: wherein n RRC is a frequency hopping frequency domain offset parameter configured for the network device, wherein, b' is a value greater than or equal to b hop and less than or equal to b, n SRS is the number of transmissions index. The method of claim 21, wherein The frequency domain interval between the kth frequency domain sub-band and the k+1th frequency domain sub-band is C SRS a determined measurement bandwidth; a frequency domain starting position corresponding to the kth frequency domain sub-band satisfies: k is any value from 0 to K-1 ; denotes the number of subcarriers contained in each RB, b is greater than or equal to 0 and less than or equal to B SRS the value of n b is a frequency domain start offset parameter. The method of claim 24, wherein The frequency domain starting offset parameter satisfies: wherein n RRC is a frequency hopping frequency domain offset parameter configured for the network device, wherein, b' is a value greater than or equal to b hop and less than or equal to b, n SRS is a transmission number index. A communication device, characterized by A device for implementing the method of any one of claims 1 to 10, or for implementing the method of any one of claims 11 to 19. The apparatus of claim 20, wherein The device comprises a network device or a chip. A communication device, comprising: The communication device comprises at least one processor coupled with a memory; The at least one processor is configured to execute a computer program or instructions stored in the memory, so that the method of any one of claims 1 to 10 or claims 11 to 19 is implemented. A computer-readable storage medium, characterized by The computer readable storage medium stores a computer program which, when executed, causes the method of any one of claims 1 to 10 or claims 11 to 19 to be implemented. A computer program, characterized in that The computer program, when executed, causes the method of any one of claims 1 to 10 or claims 11 to 19 to be implemented.

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