Communication method and apparatus

Abstract

The embodiments of the present application relate to the technical field of communications. Provided are a communication method and apparatus. The method comprises: a network device determining first indication information, wherein the first indication information is used for indicating configuration information of a first reference signal corresponding to a first beam and first antenna port number information corresponding to the first beam; the network device broadcasting the first indication information; and a terminal receiving the first indication information broadcast by the network device, and determining the first reference signal on the basis of the first indication information. In the present application, indicated reference signal configuration information and antenna port number information are in a beam level and are not separately indicated for each terminal, such that indication overheads of signaling can be reduced.

Description

Communication method and device

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office of China on September 26, 2023, with application number 202311260372.3 and application name “A Communication Method and Device”, the entire contents of which are incorporated by reference into this application. Technical Field

[0003] The embodiments of the present application relate to the field of communication technology, and in particular to a communication method and apparatus. Background Art

[0004] The fifth-generation (5G) new radio (NR) standard defines reference signals for downlink channel state measurement, such as the demodulation reference signal (DMRS), channel state information-reference signal (CSI-RS), and phase tracking reference signal (PTRS). The configuration information for these reference signals is user equipment (UE)-specific and is communicated to the UE via radio resource control (RRC) signaling. The reference signal configuration information is indicated for each UE in RRC signaling, resulting in high signaling overhead.

[0005] Summary of the Invention

[0006] The present application provides a communication method and apparatus to reduce the indication overhead of a reference signal.

[0007] In the first aspect, the present application provides a communication method that can be executed through the interaction between a terminal and a network device, wherein the terminal can be understood as the terminal itself, and can also be understood as a chip set inside the terminal, which is not specifically limited here. The terminal can be a mobile phone, a vehicle-mounted device, an Internet of Things device, etc.; the network device can be understood as the network device itself, and can also be understood as a chip set inside the network device. The network device can be a base station, a satellite, an access point, etc., which is not specifically limited here; the method can be applied to 5G communication systems or communication systems above 5G, and can also be applied to non-terrestrial communication systems, which is not specifically limited here. In actual application, it is performed as follows:

[0008] The network device determines first indication information, where the first indication information is used to indicate configuration information of a first reference signal corresponding to a first beam and first antenna port number information corresponding to the first beam; the network device broadcasts the first indication information, and after the terminal receives the first indication information, it determines the first reference signal based on the first indication information.

[0009] In the present application, the network device sends the first indication information to the terminal device through broadcasting. The first indication information is beam-level indication information, rather than a separate indication for each terminal. This method does not require the configuration of the reference signal configuration information in the RRC signaling for each terminal, which can reduce the indication overhead of the reference signal.

[0010] In an optional manner, the terminal determines the first reference signal subsequence occupied by the terminal based on a resource offset between the terminal's allocated resources and a reference resource, where the reference resource is a common reference point of a resource block grid or a starting position of a bandwidth part (BWP).

[0011] In the present application, after receiving the first indication information, the terminal determines to reorder the first reference signal subsequence based on the resource deviation between the reference resource and the allocated resource to ensure that the subsequence of the reference signal allocated to the terminal with a port number orthogonal to the first antenna port and the first reference signal subsequence are orthogonal in the overlapping part.

[0012] In an optional manner, the network device also broadcasts second indication information, and the second indication information is used to instruct the terminal to determine the reference signal sequence based on the reference resource deviation; the reference resource is the common reference point of the resource block grid or the starting position of the BWP; the terminal receives the second indication information broadcast from the network device, and determines the first reference signal subsequence occupied by the terminal based on the resource deviation between the resources allocated to the terminal and the reference resources.

[0013] In the present application, after the terminal receives the second indication information for instructing the terminal to determine the reference signal sequence based on the reference resource deviation, it determines to reorder the first reference signal subsequence based on the resource deviation between the reference resource and the allocated resource to ensure that the subsequence of the reference signal allocated to the terminal with a port number orthogonal to the first antenna port and the first reference signal subsequence are orthogonal in the overlapping part.

[0014] In one optional manner, the network device determines a resource offset, where the resource offset indicates a resource offset of a common reference point of resource block grids between the first beam and the second beam, or a resource offset of a starting position of a bandwidth workpiece (BWP) between the first beam and the second beam; the first beam and the second beam have different carrier bandwidths, or the first beam and the second beam have different bandwidth workpieces; the network device broadcasts third indication information, where the third indication information is used to indicate the resource offset. The terminal receives the third indication information broadcast from the network device and determines the first reference signal subsequence occupied by the terminal based on the third indication information and the resources allocated to the terminal.

[0015] In the present application, after the terminal receives the third indication information for resource deviation, it determines the resource deviation and the resource deviation of the allocated resources, and reorders the first reference signal subsequence to ensure that the subsequence of the reference signal allocated to the terminal with a port number orthogonal to the first antenna port and the first reference signal subsequence are orthogonal in the overlapping part.

[0016] In an optional manner, the first indication information is carried by the following signaling:

[0017] System information block (SIB), or downlink control information (DCI).

[0018] In this application, the first indication information, the second indication information, and the third indication information may be carried using the same signaling, which is not specifically limited herein. Specifically, a field indication may be added to the SIB, a reserved field indication may be used within the SIB, or existing fields may be reused under certain preconditions, which is not specifically limited herein. By using the above information to indicate each indication information, indication overhead can be reduced compared to directly indicating reference signal configuration information to each terminal one by one via RRC signaling.

[0019] In an optional manner, the network device broadcasts fourth indication information, where the fourth indication information is used to indicate configuration parameters of a beam-level update period of the signaling. Accordingly, the terminal receives the fourth indication information broadcast by the network device.

[0020] In an optional manner, the beam-level update period of the signaling is determined by the following formula: m = M*D / N

[0021] Where m indicates the update period; the unit of m is the number of radio frames rf; M indicates the beam-level update period factor; the value of M is 2 X1 , X1 is an integer greater than 1; D indicates the beam-level paging cycle; the value of D is 32rf; the value of N is 2 L , L is a positive integer.

[0022] In an optional manner, the beam level update period of the signaling is determined by the following formula: m = M*D

[0023] Where m indicates the update period; the unit of m is the number of radio frames rf; M indicates the beam-level update period factor; the value of M is 1 or 1 / 2 L ; D indicates the beam-level paging cycle; the value of D is 32rf; or, the value of M is 2 X1 , X1 is an integer greater than 1; D indicates the beam-level paging cycle; the value of D is at least one of the following:

[0024] 1rf, 2rf, 4rf, 8rf, or 16rf.

[0025] Using the above method to determine the beam-level update period of signaling can increase the update frequency of signaling and improve the flexibility of reference information configuration.

[0026] In an optional manner, the first reference signal is DMRS, or CSI-RS, or PTRS.

[0027] In an optional manner, the first indication information is further used to indicate configuration information of the second reference signal corresponding to the first beam and second antenna port number information corresponding to the first beam.

[0028] If a beam corresponds to N types of reference signal configuration information and antenna port numbers, for example, N=2, under one beam, some terminals use the configuration information and antenna port number information of the first reference signal, and the remaining terminals use the configuration information and antenna port number information of the second reference signal. The configurations of the two reference signals can be broadcast simultaneously in the broadcast signal, and only 1 bit is used to indicate the index of the reference signal configuration in the terminal-level signaling (such as RRC signaling or DCI), thereby reducing the terminal-level signaling indication overhead.

[0029] In a second aspect, an embodiment of the present application provides a communication device, which may be a terminal (network device) or a chip disposed inside a terminal (a chip disposed inside a network device). The communication device has the function of implementing the first aspect described above. For example, the communication device includes a module, unit, or means corresponding to executing the steps involved in the first aspect described above. The function, unit, or means may be implemented through software, or through hardware, or may be implemented through hardware executing the corresponding software implementation.

[0030] In one possible design, the communication device includes a processing unit and a transceiver unit, wherein the transceiver unit can be used to send and receive signals to achieve communication between the communication device and other devices, for example, the transceiver unit is used to receive configuration information from a terminal device; the processing unit can be used to perform some internal operations of the communication device. The transceiver unit can be called an input / output unit, a communication unit, etc., and the transceiver unit can be a transceiver; the processing unit can be a processor. When the communication device is a module (such as a chip) in a communication device, the transceiver unit can be an input / output interface, an input / output circuit, or an input / output pin, etc., and can also be called an interface, a communication interface, or an interface circuit, etc.; the processing unit can be a processor, a processing circuit, or a logic circuit, etc.

[0031] In another possible design, the communication device includes a processor and may also include a transceiver, the transceiver being used to transmit and receive signals, and the processor executing program instructions to perform the method in any possible design or implementation of the first aspect above. The communication device may also include one or more memories, the memories being used to couple with the processor, and the memories being used to store the necessary computer programs or instructions for implementing the functions involved in any aspect of the first aspect above. The processor may execute the computer programs or instructions stored in the memories, and when the computer programs or instructions are executed, the communication device implements the method in any possible design or implementation of the first aspect above.

[0032] In another possible design, the communication device includes a processor, which can be coupled to a memory. The memory can store the necessary computer programs or instructions for implementing the functions of any of the first aspects. The processor can execute the computer programs or instructions stored in the memory. When the computer programs or instructions are executed, the communication device implements the method of any possible design or implementation of the first aspect.

[0033] In another possible design, the communication device includes a processor and an interface circuit, wherein the processor is used to communicate with other devices through the interface circuit and execute the method in any possible design or implementation of the first aspect above.

[0034] It can be understood that in the second aspect above, the processor can be implemented by hardware or by software. When implemented by hardware, the processor can be a logic circuit, an integrated circuit, etc.; when implemented by software, the processor can be a general-purpose processor, which is implemented by reading the software code stored in the memory. In addition, the above processors can be one or more, and the memories can be one or more. The memory can be integrated with the processor, or the memory and the processor can be set separately. In the specific implementation process, the memory can be integrated with the processor on the same chip, or can be set on different chips respectively. The embodiment of the present application does not limit the type of memory and the setting method of the memory and the processor.

[0035] In a third aspect, an embodiment of the present application provides a communication system, which includes the terminal and network device in the above-mentioned first aspect.

[0036] In a fourth aspect, the present application provides a chip system, which includes a processor and may also include a memory, for implementing the method described in any possible design of the first aspect. The chip system can be composed of a chip or can include a chip and other discrete devices.

[0037] In a fifth aspect, the present application also provides a computer-readable storage medium, in which computer-readable instructions are stored. When the computer-readable instructions are run on a computer, the computer executes a method as in any possible design in the first aspect.

[0038] In a sixth aspect, the present application provides a computer program product comprising instructions, which, when executed on a computer, enables the computer to execute the methods of the various embodiments of the first aspect above.

[0039] For the technical effects that can be achieved in the above-mentioned second to sixth aspects, please refer to the description of the technical effects that can be achieved by the corresponding possible design schemes in the above-mentioned first aspect, and this application will not repeat them here. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] FIG1 shows a schematic diagram of a terrestrial communication system;

[0041] FIG2 shows a schematic diagram of a non-terrestrial communication system provided by an embodiment of the present application;

[0042] FIG3 shows a schematic diagram of a 5G satellite communication system architecture provided by an embodiment of the present application;

[0043] FIG4 shows a flow chart of a communication method provided in an embodiment of the present application;

[0044] FIG5 shows a schematic diagram of UE occupying resources;

[0045] FIG6 shows a schematic diagram of UE occupying resources provided by the present application;

[0046] FIG7 shows a schematic diagram of UE occupying resources provided by the present application;

[0047] FIG8 shows a schematic structural diagram of a communication device provided in an embodiment of the present application;

[0048] FIG9 shows a schematic structural diagram of another communication device provided in an embodiment of the present application;

[0049] FIG10 shows a schematic structural diagram of yet another communication device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0050] In order to make the purpose, technical solutions and advantages of this application clearer, the present application will be further described in detail below with reference to the accompanying drawings. The specific operating methods in the method embodiments can also be applied to the device embodiments or system embodiments. In the description of this application, unless otherwise specified, "multiple" means two or more. Therefore, the implementation of the device and method can refer to each other, and the repeated parts will not be repeated.

[0051] Figure 1 shows the architecture of a terrestrial network communication system. Communication system 100 may include network device 110 and terminal devices 101-106. It should be understood that communication system 100 may include more or fewer network devices or terminal devices. Network devices or terminal devices may be hardware, functionally divided software, or a combination of the two. Furthermore, terminal devices 104-106 may also form a communication system. For example, terminal device 105 may send downlink data to terminal device 104 or terminal device 106. Network devices and terminal devices may communicate with each other through other devices or network elements. Network device 110 may send downlink data to terminal devices 101-106 and may also receive uplink data sent by terminal devices 101-106. Of course, terminal devices 101-106 may also send uplink data to network device 110 and receive downlink data sent by network device 110.

[0052] The network device 110 is a node in a radio access network (RAN), which may also be referred to as a base station or a RAN node (or device). Currently, some examples of access network devices include: a next generation node B (gNB), a transmitting point (TP), a transmission reception point (TRP), a home base station (e.g., a home evolved NodeB, or home Node B, HNB), a macro base station, a micro base station (also known as a small station), a relay station, a base band unit (BBU) in a 5G network, or network devices in a communication system evolved after 5G, such as the sixth generation (6G). The network device 110 may also be other devices having network device functions. For example, the network device 110 may also be a device that performs base station functions in device-to-device (D2D), vehicle-to-everything (V2X), and machine-to-machine (M2M) communications, etc. It may also include a centralized unit (CU) and a distributed unit (DU) in a cloud radio access network (C-RAN) system, and a network device in a non-terrestrial network (NTN) communication system, that is, it may be deployed on a high-altitude platform or satellite. The embodiments of the present application do not specifically limit this.

[0053] Terminal devices 101-106, also known as UE, mobile station (MS), or mobile terminal (MT), provide voice or data connectivity to users and may also be IoT devices. For example, terminal devices 101-106 include handheld devices and vehicle-mounted devices with wireless connectivity. Currently, terminal devices 101 to 106 may be: mobile phones, tablet computers, laptop computers, PDAs, customer-premises equipment (CPE), mobile internet devices (MIDs), wearable devices (e.g., smart watches, smart bracelets, pedometers, etc.), in-vehicle equipment (e.g., cars, bicycles, electric vehicles, airplanes, ships, trains, high-speed trains, etc.), virtual reality (VR) devices, augmented reality (AR) devices, wireless terminals in industrial control, smart home devices (e.g., refrigerators, televisions, air conditioners, electric meters, etc.), intelligent robots, workshop equipment, wireless terminals in self-driving cars, wireless terminals in remote medical surgery, wireless terminals in smart grids, wireless terminals in transportation safety, wireless terminals in smart cities, wireless terminals in smart homes, flying devices (e.g., intelligent robots, hot air balloons, drones, airplanes), etc. The terminal devices 101 to 106 may also be other devices having terminal functions. For example, the terminal devices 101 to 106 may also be devices that serve as terminal functions in D2D communications.

[0054] Based on the description of the terrestrial network communication system architecture shown in Figure 1, the satellite network routing method provided in the embodiments of the present application can be applied to the NTN communication system. As shown in Figure 2, the NTN communication system includes a satellite 201 and a terminal device 202. The explanation of terminal device 202 can refer to the description of terminal devices 101 to 106 above. Satellite 201 can also be referred to as a high-altitude platform, a high-altitude aircraft, or a satellite base station. In relation to the NTN communication system and the terrestrial network communication system, satellite 201 can be considered as one or more network devices in the terrestrial network communication system architecture. Satellite 201 provides communication services to terminal device 202 and can also connect to core network equipment. The structure and functions of satellite 201 can also refer to the description of network devices above. The communication method between satellite 201 and terminal device 202 can also refer to the description in Figure 1 above. This description will not be repeated here.

[0055] Taking 5G as an example, a 5G satellite communication system architecture is shown in Figure 3. Ground-based terminal devices access the network via the 5G new air interface. 5G base stations are deployed on satellites and connected to the ground core network via wireless links. Wireless links also exist between satellites, enabling signaling exchanges and user data transmission between base stations. The devices and interfaces in Figure 3 are described below:

[0056] 5G core network: Provides services such as user access control, mobility management, session management, user security authentication, and billing. It consists of multiple functional units, which can be divided into control plane and data plane functional entities. The access and mobility management function (AMF) is responsible for user access management, security authentication, and mobility management. The user plane function (UPF) is responsible for managing user plane data transmission, traffic statistics, and other functions. The session management function (SMF) is primarily responsible for session management in mobile networks, such as session establishment, modification, and release.

[0057] Ground station: responsible for forwarding signaling and service data between satellite base stations and 5G core network.

[0058] 5G New Air Interface: The wireless link between the terminal and the base station.

[0059] Xn interface: The interface between 5G base stations, mainly used for signaling interactions such as switching.

[0060] NG interface: The interface between the 5G base station and the 5G core network, which mainly interacts with the core network's non-access stratum (NAS) signaling and user service data.

[0061] The network devices in a terrestrial network communication system and the satellites in an NTN communication system can be collectively considered network devices. The device used to implement the functions of the network device can be a network device; it can also be a device capable of supporting the network device in implementing the functions, such as a chip system, which can be installed in the network device. The following description of the technical solutions provided by the embodiments of the present application uses the example of a satellite as the device used to implement the functions of the network device. It will be understood that when the methods provided by the embodiments of the present application are applied to a terrestrial network communication system, the actions performed by the satellite can be applied to a base station or network device for execution.

[0062] In the embodiments of the present application, the device for realizing the function of the terminal device may be a terminal device; or it may be a device capable of supporting the terminal device to realize the function, such as a chip system, which may be installed in the terminal device. In the embodiments of the present application, the chip system may be composed of a chip, or may include a chip and other discrete devices. In the technical solutions provided in the embodiments of the present application, the technical solutions provided in the embodiments of the present application are described by taking the case where the device for realizing the function of the terminal device is a terminal or UE as an example.

[0063] In addition, the above-mentioned satellites can be geostationary satellites, non-geostationary satellites, artificial satellites, low-orbit satellites, medium-orbit satellites, high-orbit satellites, etc., which are not specifically limited in this application.

[0064] When a terminal device receives reference signal configuration information from a network device, it determines the reference signal resources to be occupied based on the reference signal configuration information. The 5G NR standard defines two reference signals for channel state measurement: DMRS and CSI-RS. The configuration information for these two reference signals is UE-specific and is communicated to the UE by the network device through RRC signaling.

[0065] Taking downlink (DL) DMRS as an example, NR only supports UE-specific DMRS for DL ​​channel estimation. Since NR uses a codebook-based design, DMRS and data are precoded using the same codebook. The UE only needs to estimate the equivalent channel and can demodulate the data without knowing the DL precoding codebook used by the base station. The NR standard supports up to 12 DL orthogonal DMRS ports. For single-user multiple-input multiple-output (SU-MIMO), each UE supports up to 8 DL orthogonal DMRS ports; for multiple-user multiple-input multiple-output (MU-MIMO), each UE supports up to 4 DL orthogonal DMRS ports.

[0066] However, in NTN, beam-based services are provided. Users within a beam have similar transmission environments, and each beam uses a single precoding codebook. Within a single beam, no user codebook is differentiated. Furthermore, users within a beam preferably transmit only a single data stream. Therefore, there is no need to use multiple orthogonal DL DMRS ports within a beam. Therefore, DL DMRS can be used as beam-common information. CSI-RS can also be used as beam-common information in NTN scenarios.

[0067] Based on this, in order to avoid indicating the configuration information of the reference signal in the RRC signaling for each UE, the present application proposes a method for indicating the configuration information of the reference signal at the beam level to reduce the indication overhead of the reference signal. Referring to Figure 4, it can be executed through the interaction between the terminal and the network device, wherein the terminal can be understood as the terminal itself, and can also be understood as a chip set inside the terminal, which is not specifically limited here. The terminal can be a mobile phone, a vehicle-mounted device, an Internet of Things device, etc.; the network device can be understood as the network device itself, and can also be understood as a chip set inside the network device. The network device can be a base station, a satellite, an access point, etc.; this method can be applied to 5G communication systems or communication systems above 5G, and can also be applied to non-terrestrial communication systems, which are not specifically limited here by the present application. In actual application, it is executed as follows:

[0068] In step 401, a network device determines first indication information, where the first indication information is used to indicate configuration information of a first reference signal corresponding to a first beam and first antenna port number information corresponding to the first beam.

[0069] Specifically, the first beam can provide communication services to multiple terminals, such as terminals located in area 1. Terminals in area 1 may include mobile phones, smart watches, laptops, etc., for example. The reference signal configuration information and antenna port number information used by the multiple terminals served by the first beam are generally the same, and the network device can determine the first indication information based on this information.

[0070] The above-mentioned first reference signal can be DMRS, CSI-RS, or PTRS. In future communications, it can also be other reference information used for channel estimation, which is not specifically limited in this application. In addition, the above-mentioned reference signal and the antenna port number are usually one-to-one corresponding. For example, the reference signal is DMRS, and the antenna port numbers of DMRS configuration type 1 can be 1000, 1001, 1002, 1003, 1004, 1005, 1006, and 1007, where ports 1000, 1001, 1004, and 1005 belong to the same CDM group. DMRS_1000 is used here to represent the DMRS with port number 1000. The configuration information of the first reference signal includes: the time-frequency density and scrambling method of the first reference signal, which is not specifically limited in this application.

[0071] When the first reference signal is DMRS, the configuration information may be as follows:

[0072] Among them, dmrs-Type indicates the type of DMRS, dmrs-AdditionalPosition indicates the additional DMRS position, maxLength indicates the number of OFDM symbols occupied by the pre-DMRS, scramblingID0 and scramblingID1 indicate the scrambling mode of DMRS, and phaseTrackingRS indicates the configuration of PTRS.

[0073] In addition, if the user positions in the first beam are different, different reference signal configurations are required, such as the time-frequency density of DMRS, the time-frequency density of CSI-RS, etc. For example, if the UE is located in a position closer to the satellite in the beam, the link budget is better, and a single-symbol pilot can be configured. If the UE is located in a position farther from the satellite in the beam, the link budget is poor, and a double-symbol pilot can be configured. Therefore, the first indication information can also indicate the configuration information of the second reference signal corresponding to the first beam and the second antenna port number information corresponding to the first beam, that is, indicating the configuration information of multiple groups of reference signals in the beam-level broadcast signal (the multiple groups of reference signals can be of the same type or of different types, and different reference signals have different uses, which are not specifically limited in this application), indicating the reference signal configuration index in the UE-level RRC signaling or DCI, such as: the reference signal corresponding to the first beam includes DMRS1, DMRS2, and CSI-RS1, and the terminals served by the first beam include terminals 1-terminal 100, such as indicating the configuration information of DMRS1, DMRS2, and CSI-RS1 in the first indication information. and the antenna port number information corresponding to each reference signal, index 1 is indicated in the RRC signaling of UE1-UE50, wherein index 1 corresponds to the configuration information of DMRS1, that is, it indicates that UE1-UE50 adopts the configuration information of DMRS1 to determine the reference signal, index 2 is indicated in the RRC signaling of UE51-UE100, wherein index 2 corresponds to the configuration information of DMRS2, that is, it indicates that UE51-UE100 adopts the configuration information of DMRS2 to determine the reference signal, index 3 is indicated in the RRC signaling of UE1-UE100, wherein index 3 corresponds to the configuration information of CSI-RS1, that is, it indicates that UE1-UE100 can also adopt the configuration information of CSI-RS1 to determine the reference signal. If a beam corresponds to N types of reference signal configuration information and antenna port numbers, for example, N=2, under one beam, some terminals use the configuration information and antenna port number information of the first reference signal, and the remaining terminals use the configuration information and antenna port number information of the second reference signal. The configurations of the two reference signals can be broadcast simultaneously in the broadcast signal, and only 1 bit is used to indicate the index of the reference signal configuration in the terminal-level signaling (such as RRC signaling or DCI), thereby reducing the terminal-level signaling indication overhead.

[0074] In step 402, the network device broadcasts first indication information. Accordingly, the terminal may receive the first indication information.

[0075] The network device can indicate through signaling such as SIB, DCI (the DCI can be used to schedule SIB), master information block (MIB), etc. Of course, in actual application, other signaling indications for broadcasting can also be used, which are not specifically limited here. Specifically, a field can be added to SIB1 to indicate the information indicated by the above-mentioned first indication information, and a reserved field of SIB can also be used for indication, which is not specifically limited here. By using the above-mentioned signaling to indicate the first indication information, the indication overhead can be reduced compared to directly indicating the reference signal configuration information of each terminal one by one through RRC signaling.

[0076] For example, a field is added to SIB1 to indicate the beam-level DMRS configuration information Beam-DMRS-DownlinkConfig and the beam-level antenna port number Beam-Antenna-Port. If there is no need to change the beam-level DMRS configuration and the beam-level antenna port number during the SIB1 update period, the DMRS configuration and the antenna port number are no longer indicated in the UE-level RRC signaling and DCI. If there is a need to change the beam-level DMRS configuration and the beam-level antenna port number during the SIB1 update period, the updated DMRS configuration and the antenna port number are indicated in the UE-level RRC signaling and DCI, and the reference signal is determined by the information in the UE-level RRC signaling and DCI indication. In addition, a field can be added to the DCI that schedules SIB1 to indicate the beam-level antenna port. This is only an example and is not a specific limitation.

[0077] In addition, in the existing NR standard, the broadcast update period (also known as the broadcast message update period) is defined as SFN mod m = 0, where SFN is the radio frame number and m = modificationPeriodCoeff (update period factor) * defaultPagingCycle (default paging cycle) represents the update period. This means that broadcast message updates can only be performed in radio frames that meet the above formula. modificationPeriodCoeff and defaultPagingCycle are parameters in SIB2. For example, if modificationPeriodCoeff = 2 and defaultPagingCycle = 32rf, the update period is 64rf, where rf indicates the number of radio frames.

[0078] In the existing standard, the minimum update period of the broadcast message is 64 radio frames (640ms). If the DMRS configuration information needs to be updated within 640ms, it cannot be updated through the broadcast message, which will limit the beam scheduling. Therefore, this application redefines the update period of the beam-level broadcast message, and the update period of the beam-level broadcast message can be set to 1 / N of the broadcast update period, where N is 2. L , L is a positive integer. This method can increase the update frequency of signaling and improve the flexibility of reference information configuration. The following methods can be used:

[0079] Method 1: The beam-level update period of the signaling is determined by the following formula 1: m = M*D / N Formula 1

[0080] Where m indicates the update period; the unit of m is the number of radio frames rf; M indicates the beam-level update period factor (also known as modificationPeriodCoeff); the value of M is 2 X1 , X1 is an integer greater than 1; D indicates the beam-level paging cycle (ie, defaultPagingCycle); the value of D is 32rf.

[0081] Method 2: The beam-level update period of the signaling is determined by the following formula 2: m = M*D Formula 2

[0082] Where M indicates the beam-level update period factor; the value of M is 1 or 1 / 2 L ; D indicates the beam-level paging cycle; the value of D is 32rf;

[0083] Method 3: The beam-level update period of the signaling is determined by the above formula 2. However, the value of M is 2 X1 , X1 is an integer greater than 1; the value of D is at least one of the following: 1rf, 2rf, 4rf, 8rf, or 16rf.

[0084] Through the above method, the signaling update period can be reduced to a minimum of 1 radio frame, that is, the beam-level broadcast message can be updated every 10ms, thereby improving the flexibility of reference signal configuration update.

[0085] In addition, in actual application, the configuration parameters of the beam-level update period can be added to the broadcast signal, such as the configuration parameters of the beam-level update period of the signaling indicated by the fourth indication information. When the terminal receives the beam-level update period, this parameter can be used to calculate the beam-level broadcast update period.

[0086] Step 403: The terminal determines a first reference signal according to the first indication information.

[0087] Specifically, the terminal may directly determine the subsequence of the first reference signal based on the first indication information with reference to an existing protocol rule, or may determine the subsequence based on a preset reference signal subsequence configuration rule, which is not specifically limited in this application.

[0088] When multiple beams of multiple orthogonal ports are used for simultaneous transmission, it is necessary to ensure the orthogonality of the DMRS between the beams of the multiple orthogonal ports. Since the mapping of DL DMRS in the NR standard starts from subcarrier 0 of resource block (RB) 0 within the bandwidth allocated to the UE, even if the two beams have the same carrier bandwidth (wherein, the same carrier bandwidth means that the starting position, ending position and length of the carrier bandwidth of the two beams are the same), that is, they have the same Point-A, point-A is the common reference point of the resource block grid. The center point of subcarrier 0 of the common resource block (CRB) 0 of all subcarrier intervals is usually called point-A, which can be understood as the RB position at the bottom of the full bandwidth. Point-A is calculated by k_SSB and OffsetToPointA. Where k_SSB is the offset between subcarrier 0 of SSB and subcarrier 0 of the CRB where the SSB is located, which is determined by the information carried in the MIB. OffsetToPointA is the offset between subcarrier 0 of the CRB where the SSB is located and subcarrier 0 of CRB0, indicated by the high-level parameter ssb-SubcarrierOffset. In addition, point-A can be used to calculate the starting position of the BWP using formula 3:

[0089] Among them, O carrier express The offset to point-A is indicated by the parameter offsetToCarrier. start Indicates BWP is off The offset is determined by the parameter locationAndBandwidth, which can also determine the number of consecutive PRBs in the BWP. This can be understood by referring to existing protocols and will not be described here.

[0090] However, when the actual service bandwidths of the two beams are different and orthogonal beam-level DMRS ports are used between the beams, the DMRS sequences may not be orthogonal in the overlapping part. As shown in Figure 5, taking each beam 1 and beam 2 serving one user as an example, when the orthogonal DMRS ports belong to the same CDM group (for example, port 1000 and port 1001), but due to the different actual occupied bandwidths, the sequences are "misaligned", resulting in different overlapping parts between the two DMRS sequences of the orthogonal DMRS ports, that is, the sequences of the overlapping parts of the bandwidth occupied by the user corresponding to beam 1 and the bandwidth occupied by the user corresponding to beam 2 in Figure 5 are different, where the sequences of the overlapping part of beam 1 are DMRS_1000(RB0) and DMRS_1000(RB1). The sequences of the overlapping part of beam 2 are DMRS_1001(RB4) and DMRS_1001(RB5), where DMRS_1000(RB0) represents a subsequence of the DMRS sequence with port 1000 on RB0, DMRS_1000(RB1) represents a subsequence of the DMRS sequence with port 1000 on RB1, DMRS_1001(RB4) represents a subsequence of the DMRS sequence with port 1001 on RB4, and DMRS_1001(RB5) represents a subsequence of the DMRS sequence with port 1001 on RB5.

[0091] Based on this, the terminal can determine the subsequence of the first reference signal based on the preset reference signal subsequence configuration rule to ensure that the subsequence of the reference signal under the beam adjacent to the first beam overlaps with the first reference signal subsequence.

[0092] Next, we take the second beam, which is adjacent to the first beam, as an example to illustrate the following two different situations:

[0093] Case 1: The carrier bandwidth of the first beam and the second beam are the same (or the BWP starting position of the first beam and the second beam are the same)

[0094] Rule 1: The terminal determines the first reference signal subsequence occupied by the terminal based on the resource offset between the terminal's allocated resources and the reference resource, where the reference resource is the common reference point of the resource block grid or the starting position of the bandwidth part (BWP). In other words, upon receiving the first indication, the terminal may determine to directly use the resource offset between the reference resource and the allocated resources to reorder the first reference signal subsequence to ensure that the reference signal subsequences allocated to the terminal with a port number orthogonal to the first antenna port are orthogonal to the first reference signal subsequence in the overlapping portion.

[0095] Rule 2: The network device also broadcasts a second indication message, which instructs the terminal to determine the reference signal sequence based on a reference resource offset. The reference resource is the common reference point of the resource block grid or the starting position of the BWP. The terminal receives the second indication message from the network device and determines the first reference signal subsequence occupied by the terminal based on the resource offset between the terminal's allocated resources and the reference resource. In other words, only after receiving the second indication message does the terminal determine to use the resource offset between the reference resource and the allocated resources to reorder the first reference signal subsequence.

[0096] In actual application, the network device and the terminal can be pre-configured to adopt the above-mentioned rule 1 or rule 2. This application does not specifically limit this. The difference between the two rules mainly lies in the different execution timing. One does not require the second indication information and can directly use the resource deviation between the reference resource and the allocated resource to reorder the first reference signal subsequence. The other needs to receive the second indication information and then use the resource deviation between the reference resource and the allocated resource to reorder the first reference signal subsequence. This application does not specifically limit which of the above-mentioned rules to adopt and can be flexibly set according to actual needs.

[0097] Next, FIG6 is used as an example to illustrate how to use the resource offset between the reference resource and the allocated resource (wherein FIG6 is an improvement relative to FIG5) to reorder the first reference signal subsequence. In FIG6, beam 1 and beam 2 have the same carrier bandwidth, where the reference resource is point-A, and the resource offset UE-offsetToPointA between the resource occupied by the terminal and point-A in beam 1 is 8 RBs. Then, the resources DMRS_1000(RB0)-DMRS_1000(RB3) occupied by the terminal in FIG5 are reordered to DMRS_1000(RB 8) DMRS_1000 (RB11). In beam 2, the resource offset UE-offsetToPointA between the resources occupied by the terminal and point-A is 4 RBs. Then, the resources DMRS_1001 (RB0) - DMRS_1001 (RB5) occupied by the terminal in Figure 5 are reordered to DMRS_1001 (RB4) - DMRS_1001 (RB9). Then, the sequence of the overlapping part of the bandwidth occupied by the user corresponding to beam 1 and the bandwidth occupied by the user corresponding to beam 2 is the same. This ensures that the DMRS sequence is orthogonal in the overlapping part.

[0098] Case 2: The carrier bandwidths of the first and second beams are different (or the BWP starting positions of the first and second beams are different)

[0099] The network device determines a resource deviation, where the resource deviation indicates a resource deviation of a common reference point of the resource block grids of the first beam and the second beam, or a resource deviation of a BWP starting position of the first beam and the second beam; the network device broadcasts third indication information, where the third indication information is used to indicate the resource deviation. The terminal receives the third indication information from the network device and determines the first reference signal subsequence occupied by the terminal based on the third indication information and the resources allocated to the terminal. After receiving the third indication information indicating the resource deviation, the terminal reorders the first reference signal subsequence based on the resource deviation and the resources allocated to the terminal to ensure that the subsequence of the reference signal allocated to the terminal with a port number orthogonal to the first antenna port and the first reference signal subsequence are orthogonal in the overlapping portion.

[0100] Specifically, it can be understood with reference to Figure 7 that beam 1 and beam 2 have different carrier bandwidths. Taking each beam 1 and beam 2 serving one user as an example, when the orthogonal DMRS ports belong to the same CDM group (for example, port 1000 and port 1001), the common reference point of the resource block grid of beam 1 is point-A, and the common reference point of the resource block grid of beam 2 is point-A0, where the deviation between point-A and point-A0 is the resource deviation. If point-A is used as the benchmark, the resource deviation can be obtained by point-A0-point-A; if point-A0 is used as the benchmark, the resource deviation can be obtained by point-A-point-A0. This application does not specifically limit this. In actual indication, if the indication field of the resource deviation is Beam-offsetToPointA0, it can be determined that the calculation of the resource deviation is based on point-A0. In Figure 6, Beam-offsetToPointA0 is 2 RBs. In beam 1, the resource offset UE-offsetToPointA between the terminal and point-A0 is 8 RBs, which are reordered as DMRS_1000(RB8)-DMRS_1000(RB11). In beam 2, the resource offset UE-offsetToPointA between the terminal and point-A is 2 RBs, which is 4 RBs, which are reordered as DMRS_1001(RB4)-DMRS_1001(RB9). Then, the subsequence of the overlapping part of the bandwidth occupied by the user corresponding to beam 1 and the bandwidth occupied by the user corresponding to beam 2 is the same.

[0101] In the present application, the network device indicates the first indication information to the terminal device through broadcasting. The first indication information is beam-level indication information, rather than separate indication for each terminal. This method does not require the configuration information of the reference signal in the RRC signaling for each terminal, which can reduce the indication overhead of the reference signal.

[0102] In addition, it should be noted that the first indication information, the second indication information, the third indication information and the fourth indication information in this application can all be carried through the SIB and the DCI used to schedule the SIB, and this application does not specifically limit this.

[0103] The above mainly introduces the solution provided by the embodiment of the present application from the perspective of device interaction. It is understandable that, in order to implement the above functions, each device may include a hardware structure and / or software module that performs each function. Those skilled in the art should easily appreciate that, in combination with the units and algorithm steps of each example described in the embodiments disclosed herein, the embodiments of the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is executed in a hardware or computer software driven hardware manner depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0104] In the embodiments of the present application, the functional units of the device can be divided according to the above method examples. For example, each functional unit can be divided according to each function, or two or more functions can be integrated into one unit. The above integrated unit can be implemented in the form of hardware or software functional units.

[0105] In the case of using an integrated unit, Figure 8 shows a possible exemplary block diagram of a communication device involved in an embodiment of the present application. As shown in Figure 8, the communication device 800 may include: a processing unit 801 and a transceiver unit 802. The processing unit 801 is used to control and manage the operations of the communication device 800. The transceiver unit 802 is used to support communication between the communication device 800 and other devices. Optionally, the transceiver unit 802 may include a receiving unit and / or a transmitting unit, respectively, for performing receiving and transmitting operations. Optionally, the communication device 800 may also include a storage unit for storing program code and / or data of the communication device 800. The transceiver unit may be referred to as an input / output unit, a communication unit, etc., and the transceiver unit may be a transceiver; the processing unit may be a processor. When the communication device is a module (such as a chip) in a communication device, the transceiver unit may be an input / output interface, an input / output circuit, or an input / output pin, etc., and may also be referred to as an interface, a communication interface, or an interface circuit, etc.; the processing unit may be a processor, a processing circuit, or a logic circuit, etc. Specifically, the device may be the above-mentioned terminal, network device, etc.

[0106] In one embodiment, the transceiver unit 802 is used to receive first indication information broadcast from a network device, where the first indication information is used to indicate configuration information of a first reference signal corresponding to a first beam and first antenna port number information corresponding to the first beam; the processing unit 801 is used to determine the first reference signal based on the first indication information.

[0107] Optionally, the processing unit 801 is configured to determine a first reference signal subsequence occupied by the terminal according to a resource offset between resources allocated to the terminal and reference resources, where the reference resources are a common reference point of a resource block grid or a starting position of a bandwidth part BWP.

[0108] Optionally, the transceiver unit 802 is also used to receive second indication information broadcast from the network device, and the second indication information is used to instruct the terminal to determine the reference signal sequence based on the reference resource deviation; the reference resource is the common reference point of the resource block grid or the starting position of the BWP; the processing unit 801 also uses language to determine the first reference signal subsequence occupied by the terminal based on the resource deviation between the resources allocated to the terminal and the reference resources.

[0109] Optionally, the transceiver unit 802 is also used to receive a third indication information broadcast from the network device, where the third indication information is used to indicate the resource deviation between the first beam and the second beam; the resource deviation indicates the resource deviation of the common reference point of the resource block grid of the first beam and the second beam, or the resource deviation of the BWP starting position of the first beam and the second beam; the carrier bandwidths of the first beam and the second beam are different, or the first beam and the second beam have different BWPs; the processing unit 801 is also used to determine the first reference signal subsequence occupied by the terminal based on the third indication information and the resources allocated to the terminal.

[0110] Optionally, the first indication information is carried through the following signaling: SIB, or DCI.

[0111] Optionally, the transceiver unit 802 is further used to receive fourth indication information broadcast from the network device, where the fourth indication information is used to indicate configuration parameters of the beam-level update period of the signaling.

[0112] Optionally, the beam-level update period of the signaling is determined by the following formula: m = M*D / N

[0113] Where m indicates the update period; the unit of m is the number of radio frames rf; M indicates the beam-level update period factor; the value of M is 2 X1 , X1 is an integer greater than 1; D indicates the beam-level paging cycle; the value of D is 32rf; the value of N is 2 L , L is a positive integer.

[0114] Optionally, the beam-level update period of the signaling is determined by the following formula: m = M*D

[0115] Where m indicates the update period; the unit of m is the number of radio frames rf; M indicates the beam-level update period factor; the value of M is 1 or 1 / 2 L ; D indicates the beam-level paging cycle; the value of D is 32rf; or, the value of M is 2 X1 , X1 is an integer greater than 1; D indicates the beam-level paging cycle; the value of D is at least one of the following: 1rf, 2rf, 4rf, 8rf, or 16rf.

[0116] Optionally, the first reference signal is DMRS, or CSI-RS, or PTRS.

[0117] Optionally, the first indication information is further used to indicate configuration information of the second reference signal corresponding to the first beam and second antenna port number information corresponding to the first beam.

[0118] In another embodiment, the processing unit 801 is used to determine first indication information, where the first indication information is used to indicate configuration information of a first reference signal corresponding to the first beam and first antenna port number information corresponding to the first beam; the transceiver unit 802 is used to broadcast the first indication information.

[0119] Optionally, the transceiver unit 802 is further used to broadcast second indication information, where the second indication information is used to instruct the terminal to determine a reference signal sequence according to a reference resource offset; the reference resource is a common reference point of a resource block grid or a starting position of a BWP.

[0120] Optionally, the processing unit 801 is also used to determine a resource deviation, where the resource deviation indicates a resource deviation of a common reference point of the resource block grids of the first beam and the second beam, or a resource deviation of a BWP starting position of the first beam and the second beam; the carrier bandwidths of the first beam and the second beam are different, or the first beam and the second beam have different BWPs; the transceiver unit 802 is also used to broadcast third indication information, where the third indication information is used to indicate the resource deviation.

[0121] Optionally, the first indication information is carried by the following signaling:

[0122] SIB, or DCI.

[0123] Optionally, the transceiver unit 802 is further used to broadcast fourth indication information, where the fourth indication information is used to indicate configuration parameters of the beam-level update period of the signaling.

[0124] Optionally, the beam-level update period of the signaling is determined by the following formula: m = M*D / N

[0125] Where m indicates the update period; the unit of m is the number of radio frames rf; M indicates the beam-level update period factor; the value of M is 2 X1, X1 is an integer greater than 1; D indicates the beam-level paging cycle; the value of D is 32rf; the value of N is 2 L , L is a positive integer.

[0126] Optionally, the beam-level update period of the signaling is determined by the following formula: m = M*D

[0127] Where m indicates the update period; the unit of m is the number of radio frames rf; M indicates the beam-level update period factor; the value of M is 1 or 1 / 2 L ; D indicates the beam-level paging cycle; the value of D is 32rf; or, the value of M is 2 X1 , X1 is an integer greater than 1; D indicates the beam-level paging cycle; the value of D is at least one of the following: 1rf, 2rf, 4rf, 8rf, or 16rf.

[0128] Optionally, the first reference signal is DMRS, or CSI-RS, or PTRS.

[0129] Optionally, the first indication information is further used to indicate configuration information of a second reference signal corresponding to the first beam and second antenna port number information corresponding to the first beam.

[0130] As shown in Figure 9, this application also provides a communication device 900. The communication device 900 can be a chip or a chip system. The communication device can be located in the device involved in any of the above method embodiments, such as the first satellite, network equipment, ground equipment, etc., to perform the corresponding actions of the device.

[0131] Optionally, the chip system may consist of the chip, or may include the chip and other discrete devices.

[0132] The communication device 900 includes a processor 910 .

[0133] The processor 910 is configured to execute the computer program stored in the memory 920 to implement the actions of each device in any of the above method embodiments.

[0134] The communication device 900 may further include a memory 920 for storing computer programs.

[0135] Optionally, the memory 920 and the processor 910 are coupled. Coupling is an indirect coupling or communication connection between devices, units, or modules, and can be electrical, mechanical, or other forms, for information exchange between the devices, units, or modules. Optionally, the memory 920 and the processor 910 are integrated.

[0136] The processor 910 and the memory 920 may be one or more and are not limited.

[0137] Optionally, in actual applications, the communication device 900 may or may not include a transceiver 930, as illustrated by a dashed box in the figure. The communication device 900 can exchange information with other devices via the transceiver 930. The transceiver 930 can be a circuit, a bus, or any other device capable of exchanging information.

[0138] In a possible implementation, the communication device 900 may be the first satellite or ground equipment in the implementation of the above methods.

[0139] The specific connection medium between the transceiver 930, processor 910, and memory 920 is not limited in the embodiments of the present application. In FIG. 9 , the memory 920, processor 910, and transceiver 930 are connected via a bus. The bus is represented by a bold line in FIG. The connection between other components is for illustrative purposes only and is not intended to be limiting. Buses can be classified as address buses, data buses, control buses, and the like. For ease of illustration, FIG. 9 uses only one bold line, but this does not imply that there is only one bus or type of bus. In the embodiments of the present application, the processor can be a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field-programmable gate array or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component, and can implement or execute the various methods, steps, and logic block diagrams disclosed in the embodiments of the present application. The general-purpose processor can be a microprocessor or any conventional processor. The steps of the methods disclosed in the embodiments of the present application can be directly executed by a hardware processor or by a combination of hardware and software modules within the processor.

[0140] In an embodiment of the present application, the memory may be a non-volatile memory, such as a hard disk drive (HDD) or a solid-state drive (SSD), etc., or a volatile memory (volatile memory), such as a random-access memory (RAM). The memory may also be any other medium that can be used to carry or store desired program code in the form of instructions or data structures and can be accessed by a computer, but is not limited thereto. The memory in an embodiment of the present application may also be a circuit or any other device that can implement a storage function, for storing computer programs, program instructions and / or data.

[0141] Based on the above embodiments, referring to FIG10 , the embodiment of the present application also provides another communication device 1000, including: an interface circuit 1010 and a logic circuit 1020; the interface circuit 1010 can be understood as an input and output interface, which can be used to execute the receiving and sending steps of each device in any of the above method embodiments; the logic circuit 1020 can be used to run code or instructions to execute the method executed by each device in any of the above embodiments, which will not be repeated.

[0142] Based on the above embodiments, embodiments of the present application further provide a computer-readable storage medium storing instructions that, when executed, cause the method executed by each device in any of the above method embodiments to be implemented. The computer-readable storage medium may include any medium capable of storing program code, such as a USB flash drive, a mobile hard drive, a read-only memory, a random access memory, a magnetic disk, or an optical disk.

[0143] Based on the above embodiments, an embodiment of the present application provides a communication system, which includes the first satellite, ground equipment and other satellites mentioned in any of the above method embodiments, and can be used to execute the method executed by each device in any of the above method embodiments.

[0144] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Furthermore, the present application may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to magnetic disk storage, compact disc read-only memory (CD-ROM), optical storage, etc.) containing computer-usable program code.

[0145] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device produce a device for implementing the functions specified in one or more processes in the flowchart and / or one or more boxes in the block diagram.

[0146] These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce a manufactured product including an instruction device that implements the functions specified in one or more processes in the flowchart and / or one or more boxes in the block diagram.

[0147] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, so that the instructions executed on the computer or other programmable device provide steps for implementing the functions specified in one or more processes in the flowchart and / or one or more boxes in the block diagram.

Claims

1. A communication method, characterized in that: include: The terminal receives first indication information broadcasted from a network device, where the first indication information is used to indicate configuration information of a first reference signal corresponding to a first beam and first antenna port number information corresponding to the first beam; The terminal determines the first reference signal according to the first indication information.

2. The method according to claim 1, characterized in that The terminal determines the first reference signal according to the first indication information, including: The terminal determines a first reference signal subsequence occupied by the terminal according to a resource deviation between a resource allocated to the terminal and a reference resource, where the reference resource is a common reference point of a resource block grid or a starting position of a bandwidth part BWP.

3. The method according to claim 1, characterized in that The method further comprises: The terminal receives second indication information broadcasted by the network device, where the second indication information is used to instruct the terminal to determine a reference signal sequence according to a reference resource deviation; the reference resource is a common reference point of a resource block grid or a starting position of a BWP; The terminal determines, according to a resource offset between resources allocated to the terminal and reference resources, a first reference signal subsequence occupied by the terminal.

4. The method according to claim 1, characterized in that: The method further comprises: The terminal receives third indication information broadcasted by the network device, where the third indication information is used to indicate a resource deviation between the first beam and the second beam; the resource deviation indicates a resource deviation of a common reference point of a resource block grid of the first beam and the second beam, or a resource deviation of a BWP starting position of the first beam and the second beam; the first beam and the second beam have different carrier bandwidths, or the first beam and the second beam have different BWPs; The terminal determines, according to the third indication information and the resources allocated to the terminal, a first reference signal subsequence occupied by the terminal.

5. The method according to any one of claims 1 to 4, characterized in that: The first indication information is carried by the following signaling: System Information Block SIB, or Downlink Control Information DCI.

6. The method according to claim 5, characterized in that Also includes: The terminal receives fourth indication information broadcast from the network device, where the fourth indication information is used to indicate configuration parameters of a beam-level update period of the signaling.

7. The method according to claim 6, characterized in that The beam level update period of the signaling is determined by the following formula: m=M*D / N Wherein, m indicates the update period; the unit of m is the number of radio frames rf; M indicates the beam level update period factor; the value of M is 2 X1 , x1 is an integer greater than 1; D indicates the beam-level paging cycle; the value of D is 32rf; the value of N is 2 L , where L is a positive integer.

8. The method according to claim 6, characterized in that The beam level update period of the signaling is determined by the following formula: m=M*D Wherein, m indicates the update period; the unit of m is the number of radio frames rf; M indicates the beam level update period factor; the value of M is 1 or 1 / 2 L ; The D indicates the beam-level paging cycle; the value of D is 32rf; or, The value of M is 2 X1 , X1 is an integer greater than 1; D indicates the beam-level paging cycle; the value of D is at least one of the following: 1RF, 2RF, 4RF, 8RF, or 16RF.

9. The method according to any one of claims 1 to 8, characterized in that: The first reference signal is a demodulation reference signal DMRS, or a channel state information reference signal CSI-RS, or a phase tracking reference signal PTRS.

10. The method according to any one of claims 1 to 9, characterized in that: The first indication information is further used to indicate configuration information of a second reference signal corresponding to the first beam and second antenna port number information corresponding to the first beam.

11. A communication method, characterized in that: include: The network device determines first indication information, where the first indication information is used to indicate configuration information of a first reference signal corresponding to a first beam and first antenna port number information corresponding to the first beam; The network device broadcasts the first indication information.

12. The method according to claim 11, characterized in that The method further comprises: The network device broadcasts second indication information, where the second indication information is used to instruct the terminal to determine a reference signal sequence according to a reference resource deviation; the reference resource is a common reference point of a resource block grid or a starting position of a BWP.

13. The method according to claim 11, characterized in that The method further comprises: The network device determines a resource deviation, where the resource deviation indicates a resource deviation of a common reference point of a resource block grid of the first beam and the second beam, or a resource deviation of a BWP start position of the first beam and the second beam; the first beam and the second beam have different carrier bandwidths, or the first beam and the second beam have different BWPs; The network device broadcasts third indication information, where the third indication information is used to indicate the resource deviation.

14. The method according to any one of claims 11 to 13, characterized in that: The first indication information is carried by the following signaling: System Information Block SIB, or Downlink Control Information DCI.

15. The method according to claim 14, characterized in that Also includes: The network device broadcasts fourth indication information, where the fourth indication information is used to indicate configuration parameters of a beam-level update period of the signaling.

16. The method according to claim 15, characterized in that The beam level update period of the signaling is determined by the following formula: m=M*D / N Wherein, m indicates the update period; the unit of m is the number of radio frames rf; M indicates the beam level update period factor; the value of M is 2 X1 , X1 is an integer greater than 1; D indicates the beam-level paging cycle; the value of D is 32rf; the value of N is 2 L , where L is a positive integer.

17. The method according to claim 15, characterized in that The beam level update period of the signaling is determined by the following formula: m=M*D Wherein, m indicates the update period; the unit of m is the number of radio frames rf; M indicates the beam level update period factor; the value of M is 1 or 1 / 2 L ; The D indicates the beam-level paging cycle; the value of D is 32rf; or, The value of M is 2X1, where X1 is an integer greater than 1; D indicates a beam-level paging cycle; and the value of D is at least one of the following: 1RF, 2RF, 4RF, 8RF, or 16RF.

18. The method according to any one of claims 11 to 17, characterized in that: The first reference signal is a demodulation reference signal DMRS, or a channel state information reference signal CSI-RS, or a phase tracking reference signal PTRS.

19. The method according to any one of claims 11 to 18, characterized in that: The first indication information is further used to indicate configuration information of a second reference signal corresponding to the first beam and second antenna port number information corresponding to the first beam.

20. A communication device, characterized in that: include: A transceiver unit, configured to receive first indication information broadcasted from a network device, wherein the first indication information is used to indicate configuration information of a first reference signal corresponding to a first beam and first antenna port number information corresponding to the first beam; A processing unit is used to determine the first reference signal according to the first indication information.

21. The device according to claim 20, characterized in that The processing unit is used for: A first reference signal subsequence occupied by the terminal is determined according to a resource deviation between a resource allocated to the terminal and a reference resource, wherein the reference resource is a common reference point of a resource block grid or a starting position of a bandwidth part BWP.

22. The device according to claim 20, characterized in that The transceiver unit is further used to: receive second indication information broadcasted by the network device, wherein the second indication information is used to instruct the terminal to determine a reference signal sequence according to a reference resource deviation; the reference resource is a common reference point of a resource block grid or a starting position of a BWP; The processing unit is further configured to determine a first reference signal subsequence occupied by the terminal according to a resource deviation between resources allocated to the terminal and reference resources.

23. The device according to claim 20, characterized in that The transceiver unit is further used for: receiving third indication information broadcasted from the network device, the third indication information being used to indicate a resource deviation between the first beam and the second beam; the resource deviation indicating a resource deviation of a common reference point of a resource block grid of the first beam and the second beam, or a resource deviation of a BWP starting position of the first beam and the second beam; the first beam and the second beam have different carrier bandwidths, or the first beam and the second beam have different BWPs; The processing unit is further configured to determine a first reference signal subsequence occupied by the terminal according to the third indication information and the resources allocated to the terminal.

24. The device according to any one of claims 20 to 23, characterized in that The first indication information is carried by the following signaling: System Information Block SIB, or Downlink Control Information DCI.

25. The device according to claim 24, characterized in that The transceiver unit is further used to receive fourth indication information broadcast from the network device, where the fourth indication information is used to indicate configuration parameters of the beam-level update period of the signaling.

26. The device according to claim 25, characterized in that The beam level update period of the signaling is determined by the following formula: m=M*D / N Wherein, m indicates the update period; the unit of m is the number of radio frames rf; M indicates the beam level update period factor; the value of M is 2 X1 , X1 is an integer greater than 1; D indicates the beam-level paging cycle; the value of D is 32rf; the value of N is 2 L , where L is a positive integer.

27. The device according to claim 25, characterized in that The beam level update period of the signaling is determined by the following formula: m=M*D Wherein, m indicates the update period; the unit of m is the number of radio frames rf; M indicates the beam level update period factor; the value of M is 1 or 1 / 2 L ; The D indicates the beam-level paging cycle; the value of D is 32rf; or, The value of M is 2 X1 , X1 is an integer greater than 1; D indicates the beam-level paging cycle; the value of D is at least one of the following: 1RF, 2RF, 4RF, 8RF, or 16RF.

28. The device according to any one of claims 20 to 27, characterized in that The first reference signal is a demodulation reference signal DMRS, or a channel state information reference signal CSI-RS, or a phase tracking reference signal PTRS.

29. The device according to any one of claims 20 to 28, characterized in that The first indication information is further used to indicate configuration information of a second reference signal corresponding to the first beam and second antenna port number information corresponding to the first beam.

30. A communication device, characterized in that: include: a processing unit, configured to determine first indication information, where the first indication information is used to indicate configuration information of a first reference signal corresponding to a first beam and first antenna port number information corresponding to the first beam, where the first beam provides a communication service for a terminal; A transceiver unit is used to broadcast the first indication information.

31. The device according to claim 30, characterized in that The transceiver unit is further used to broadcast second indication information, where the second indication information is used to instruct the terminal to determine a reference signal sequence according to a reference resource deviation; the reference resource is a common reference point of a resource block grid or a starting position of a BWP.

32. The device according to claim 30, characterized in that The processing unit is further configured to determine a resource deviation, where the resource deviation indicates a resource deviation of a common reference point of a resource block grid of the first beam and the second beam, or a resource deviation of a BWP starting position of the first beam and the second beam; the first beam and the second beam have different carrier bandwidths, or the first beam and the second beam have different BWPs; The transceiver unit is further used to broadcast third indication information, where the third indication information is used to indicate the resource deviation.

33. The device according to any one of claims 30 to 32, characterized in that The first indication information is carried by the following signaling: System Information Block SIB, or Downlink Control Information DCI.

34. The device according to claim 33, characterized in that The transceiver unit is further used to broadcast fourth indication information, where the fourth indication information is used to indicate configuration parameters of the beam-level update period of the signaling.

35. The device according to claim 34, characterized in that The beam level update period of the signaling is determined by the following formula: m=M*D / N Wherein, m indicates the update period; the unit of m is the number of radio frames rf; M indicates the beam level update period factor; the value of M is 2 X1 , X1 is an integer greater than 1; D indicates the beam-level paging cycle; the value of D is 32rf; the value of N is 2 L , where L is a positive integer.

36. The device according to claim 34, characterized in that The beam level update period of the signaling is determined by the following formula: m=M*D Wherein, m indicates the update period; the unit of m is the number of radio frames rf; M indicates the beam level update period factor; the value of M is 1 or 1 / 2 L ; The D indicates the beam-level paging cycle; the value of D is 32rf; or, The value of M is 2 X1 , X1 is an integer greater than 1; D indicates the beam-level paging cycle; the value of D is at least one of the following: 1RF, 2RF, 4RF, 8RF, or 16RF.

37. The device according to any one of claims 30 to 36, characterized in that The first reference signal is a demodulation reference signal DMRS, or a channel state information reference signal CSI-RS, or a phase tracking reference signal PTRS.

38. The device according to any one of claims 30 to 37, characterized in that The first indication information is further used to indicate configuration information of a second reference signal corresponding to the first beam and second antenna port number information corresponding to the first beam.

39. A communication device, characterized in that: include: at least one processor and memory; The memory is used to store computer programs or instructions; The at least one processor is configured to execute the computer program or instruction so that the method according to any one of claims 1 to 19 is performed.

40. A chip system, characterized in that: The chip system comprises: a processing circuit; the processing circuit is coupled to a storage medium; The processing circuit is used to execute part or all of the computer programs or instructions in the storage medium, and when the part or all of the computer programs or instructions are executed, it is used to implement the method according to any one of claims 1 to 19.

41. A computer-readable storage medium, characterized in that The computer-readable storage medium stores instructions, and when the instructions are executed by a computer, the method according to any one of claims 1 to 19 is executed.

42. A computer program product comprising a computer program or instructions, characterized in that When it is run on a computer, the method described in any one of claims 1 to 19 is executed.

43. A communication system, characterized in that: The method comprises a terminal and a network device, wherein the terminal is used to execute the method according to any one of claims 1 to 10, and the network device is used to execute the method according to any one of claims 11 to 19.

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