WO2024103973A1 - Procédé de communication et appareil de communication - Google Patents

Procédé de communication et appareil de communication Download PDF

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Publication number
WO2024103973A1
WO2024103973A1 PCT/CN2023/121642 CN2023121642W WO2024103973A1 WO 2024103973 A1 WO2024103973 A1 WO 2024103973A1 CN 2023121642 W CN2023121642 W CN 2023121642W WO 2024103973 A1 WO2024103973 A1 WO 2024103973A1
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WIPO (PCT)
Prior art keywords
trps
beams
signal
terminal device
information
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PCT/CN2023/121642
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English (en)
Chinese (zh)
Inventor
黄松创
宋维斌
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华为技术有限公司
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Publication of WO2024103973A1 publication Critical patent/WO2024103973A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/24—Cell structures
    • H04W16/28—Cell structures using beam steering
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/02—Arrangements for optimising operational condition
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/18—Processing of user or subscriber data, e.g. subscribed services, user preferences or user profiles; Transfer of user or subscriber data
    • H04W8/20—Transfer of user or subscriber data

Definitions

  • the embodiments of the present application relate to the field of wireless communications, and more specifically, to a communication method and a communication device.
  • a multi-TRP cell refers to a logical cell composed of multiple TRPs, and a terminal device can access the cell through any of the TRPs.
  • the present application provides a communication method and a communication device, so that a network device can optimize a network that provides services for a terminal device.
  • a communication method comprising: a network device sends a first signal through beams corresponding to at least two transmission receiving points TRPs, wherein the identifier of at least one beam corresponding to different TRPs is different; thereafter, the network device receives first information from a terminal device, the first information comprising an identifier of a target beam, the target beam being one of the beams corresponding to the at least two TRPs, the energy of a first signal received by the terminal device on the target beam being the largest among the first signals received on the beams corresponding to the at least two TRPs; thereafter, the network device determines the TRP in which the terminal device currently resides based on the identifier of the target beam and second information, the second information comprising a mapping relationship between the identifier of the beam and the TRP.
  • the network device can uniquely determine the TRP corresponding to the identifier of the target beam in the second information as the TRP where the terminal device currently resides based on the identifier of the target beam reported by the terminal device and the second information, thereby optimizing the network that provides services to the terminal device.
  • the method also includes: the network device determines the parameters for generating the beams corresponding to the at least two TRPs based on the number of beams corresponding to the at least two TRPs and third information, and the third information includes a mapping relationship between the number of beams and the parameters for generating the beams; thereafter, the network device generates the beams corresponding to the at least two TRPs based on the parameters for generating the beams corresponding to the at least two TRPs.
  • the network device determines the parameters for generating beams corresponding to the number of beams allocated to a certain TRP from the mapping relationship, thereby generating a corresponding number of beams for the TRP based on the parameters for generating beams.
  • the number of beams corresponding to each of the at least two TRPs is determined based on the number of TRPs in the cell and the number of beams used to send the first signal.
  • the network device determines the number of beams allocated to each TRP according to the number of TRPs in the cell and the number of beams used to send the first signal, so that the beams can be evenly distributed among different TRPs.
  • the number of at least one beam corresponding to different TRPs is different.
  • the first information includes the energy of the first signal received by the terminal device on the target beam.
  • the first signal includes a synchronization signal block SSB.
  • the identifier of the beam includes an index number of the beam.
  • the network device can uniquely determine the TRP corresponding to the identifier of the target beam in the second information as the TRP where the terminal device is currently located based on the identifier of the target beam reported by the terminal device and the second information.
  • the number of beams corresponding to each of the at least two TRPs is determined based on the number of TRPs in the cell and the number of beams used to send the first signal.
  • the network device determines the number of beams allocated to each TRP according to the number of TRPs in the cell and the number of beams used to send the first signal, so that the beams can be evenly distributed among different TRPs.
  • the number of at least one beam corresponding to different TRPs is different.
  • the first information includes energy of the first signal received by the terminal device on the target beam.
  • the first signal includes a synchronization signal block SSB.
  • the identifier of the beam includes an index number of the beam.
  • a communication device which may be a network device or a terminal device in the above method, or a module applied to a network device or a terminal device.
  • the communication device includes: a processor coupled to a memory, and can be used to execute instructions in the memory to implement the method performed by the network device or the terminal device in any of the above aspects and any possible implementation of any of the aspects.
  • the communication device also includes a memory.
  • the communication device also includes a communication interface, and the processor is coupled to the communication interface.
  • the communication interface may be a transceiver, or an input/output interface.
  • the transceiver may be a transceiver circuit.
  • the input/output interface may be an input/output circuit.
  • a program which, when executed by a communication device, is used to execute any method in any of the above aspects and possible implementations thereof.
  • a computer program product comprising: a program code, when the program code is executed by a communication device, the communication device executes any method in any of the above aspects and any possible implementations thereof.
  • a computer-readable storage medium stores a program, and when the program is executed, the communication device executes any method in any of the above aspects and any possible implementation methods thereof.
  • the present application provides a chip, including a processor.
  • the processor is used to read and execute a computer program stored in a memory to execute the method in the first aspect and any possible implementation thereof, or execute the method in the second aspect and any possible implementation thereof, or execute the method described in other embodiments of the present application.
  • the chip also includes a memory, and the memory is connected to the processor via a circuit or wire.
  • a communication system which includes the above-mentioned network device and terminal device.
  • FIG1 is a schematic diagram of the architecture of a communication system used in an embodiment of the present application.
  • FIG2 is a schematic diagram of an example of a connection relationship between multiple TRPs and RRUs in a multi-TRP cell provided by an embodiment of the present application;
  • FIG3 is a schematic diagram of another example of a connection relationship between multiple TRPs and RRUs in a multi-TRP cell provided by an embodiment of the present application;
  • FIG4 is a schematic interactive flow chart of an example of a communication method provided in an embodiment of the present application.
  • FIG5 is a schematic block diagram of an example of a communication device provided in an embodiment of the present application.
  • FIG6 is a schematic block diagram of another communication device provided in an embodiment of the present application.
  • At least one of the following or its similar expressions refers to any combination of these items, including any combination of single item or plural items.
  • at least one of a, b, or c can be represented by: a, b, c, ab, ac, bc, or abc, wherein a, b, c can be single or multiple.
  • the words “first”, “second” and the like are used to distinguish the same items or similar items with substantially the same functions and effects. It can be understood by those skilled in the art that the words “first”, “second” and the like do not limit the quantity and execution order, and the words “first”, “second” and the like do not limit the certain difference.
  • the technical solutions of the embodiments of the present application can be applied to various communication systems, such as the New Radio (NR) in the fifth generation (5G) mobile communication system and future mobile communication systems.
  • NR New Radio
  • 5G fifth generation
  • FIG1 is a schematic diagram of the architecture of a mobile communication system applicable to an embodiment of the present application.
  • the communication system includes a wireless access network 100 and a core network 200.
  • the wireless access network 100 may include at least one access network device (such as 110a and 110b in FIG1 , collectively referred to as 110), and may also include at least one terminal (such as 120a-120j in FIG1 , collectively referred to as 120).
  • the terminals 120a-120j are connected to the access network devices 110a and 110b in a wireless manner.
  • the access network devices 110a and 110b are connected to the core network 200 in a wireless or wired manner.
  • the core network device in the core network and the access network device in the wireless access network may be different physical devices, or may be the same physical device that integrates the core network logical function and the wireless access network logical function.
  • the terminals may be connected to each other in a wireless manner.
  • the access network devices may be connected to each other in a wired or wireless manner.
  • FIG1 is only a schematic diagram, and the communication system may also include other network devices, for example, wireless relay devices and/or wireless backhaul devices (not shown in FIG1 ).
  • the communication system may, for example, support a cellular system related to the 3rd Generation Partnership Project (3GPP) (such as a 5G communication system, a communication system integrating multiple wireless technologies (such as a communication system integrating at least two of 2G, 3G, 4G, or 5G technologies), or a future-oriented evolution system (such as 6G access technology)), or a wireless fidelity (WiFi) system, or a communication system integrating a 3GPP-related cellular system with other technologies, or a future communication system, etc.
  • 3GPP 3rd Generation Partnership Project
  • 5G communication system such as a 5G communication system, a communication system integrating multiple wireless technologies (such as a communication system integrating at least two of 2G, 3G, 4G, or 5G technologies), or a future-oriented evolution system (such as 6G access technology)
  • WiFi wireless fidelity
  • the access network device in the embodiment of the present application is sometimes also referred to as an access node.
  • the access network device has a wireless transceiver function and is used to communicate with the terminal.
  • the access network device includes, but is not limited to, a base station (base station) in the above-mentioned communication system, an evolved base station (evolved NodeB, eNodeB), a transmission reception point (transmission reception point, TRP), a next-generation base station (next generation NodeB, gNB) in a 5G mobile communication system, a next-generation base station in a sixth-generation (6th generation, 6G) mobile communication system, an access network device or a module of an access network device in an open access network ORAN (open RAN, ORAN) system, a base station in a future mobile communication system, or an access node in a WiFi system, etc.
  • ORAN open RAN
  • ORAN open RAN
  • WiFi WiFi
  • the access network device may also be a module or unit that can implement some functions of a base station.
  • the access network device may be a centralized unit (central unit, CU), a distributed unit (distributed unit, DU), a CU-control plane (control plane, CP), a CU-user plane (user plane, UP), or a radio unit (radio unit, RU), etc., as described below.
  • CU can also be called O-CU
  • DU can also be called open (open, O)-DU
  • CU-CP can also be called O-CU-CP
  • CU-UP can also be called O-CUP-UP
  • RU can also be called O-RU.
  • the access network device can be a macro base station (such as 110a in Figure 1), a micro base station or an indoor station (such as 110b in Figure 1), a relay node or a donor node, or a wireless controller in a cloud radio access network (cloud radio access network, CRAN) scenario.
  • the access network device can also be a server, a wearable device, or a vehicle-mounted device.
  • the access network device in the vehicle to everything (V2X) technology can be a road side unit (RSU).
  • Multiple access network devices in the communication system can be base stations of the same type or different types.
  • the base station can communicate with the terminal or communicate with the terminal through a relay station.
  • the terminal can communicate with multiple base stations in different access technologies.
  • the embodiments of the present application do not limit the specific technology and specific device form adopted by the access network device.
  • access network equipment is referred to as network equipment. Unless otherwise specified, in this application, network equipment refers to access network equipment.
  • the terminal may also be referred to as a terminal device, user equipment (UE), mobile station, mobile terminal, etc.
  • the terminal can be widely used in various communication scenarios, for example, it can be applied to device-to-device (D2D) communication, vehicle-to-everything (V2X) communication, machine-type communication (MTC), Internet of Things (IOT), virtual reality, augmented reality, industrial control, automatic driving, telemedicine, smart grid, smart furniture, smart office, smart wear, smart transportation, or smart city.
  • the terminal can be a mobile phone, a tablet computer, a computer with wireless transceiver function, a wearable device, a vehicle, a drone, a helicopter, an airplane, a ship, a robot, a mechanical arm, or a smart home device, etc.
  • the embodiment of the present application does not limit the device form of the terminal.
  • Access network equipment and/or terminals can be fixed or mobile. They can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; they can also be deployed on the water surface; they can also be deployed in the air on aircraft, balloons and artificial satellites.
  • the embodiments of the present application do not limit the application scenarios of the access network device and the terminal.
  • the access network device and the terminal device can be deployed in the same scenario or in different scenarios, for example, the access network device and the terminal device are deployed on land at the same time; or, the access network device is deployed on land and the terminal device is deployed on the water, etc., and examples are not given one by one.
  • each element in the communication system can be regarded as a network element in the communication system.
  • the helicopter or drone 120i in FIG. 1 can be configured as a mobile access network device.
  • the drone 120i is an access network device; but for the access network device 110a, 120i is a terminal device, that is, 110a and 120i communicate through a wireless air interface protocol.
  • 110a and 120i can also communicate through an interface protocol between access network devices and access network devices.
  • the access network device and the terminal device can be collectively referred to as a communication device.
  • 110a and 110b in FIG. 1 can be referred to as a communication device with access network device functions
  • 120a-120j in FIG. 1 can be referred to as a communication device with terminal device functions.
  • the communication device having the access network device function may be an access network device, or a module in the access network device (such as a chip, a chip system, or a software module, etc.), or a control subsystem including the access network device function.
  • the control subsystem including the access network device function may be a control center in scenarios where terminals can be applied, such as smart grids, industrial control, smart transportation, or smart cities.
  • the communication device with terminal function can be a terminal, or a module in a terminal (such as a chip, a chip system, a modem, or a software model, etc.), or a device including a terminal function.
  • a terminal or a module in a terminal (such as a chip, a chip system, a modem, or a software model, etc.), or a device including a terminal function.
  • the base station or BS and the terminal or UE are used as examples for explanation.
  • the protocol layer structure may include a control plane protocol layer structure and a user plane protocol layer structure.
  • the control plane protocol layer structure may include at least one of the following: a radio resource control (RRC) layer, a packet data convergence protocol (PDCP) layer, a radio link control (RLC) layer, a media access control (MAC) layer, or a physical (PHY) layer.
  • the user plane protocol layer structure may include at least one of the following: a service data adaptation protocol (SDAP) layer, a PDCP layer, an RLC layer, a MAC layer, or a physical layer.
  • SDAP service data adaptation protocol
  • the access network device may include a CU and a DU. This design may be referred to as separation of CU and DU. Multiple DUs may be centrally controlled by one CU. As an example, the interface between the CU and the DU is referred to as an F1 interface. Among them, the control plane (control panel, CP) interface may be F1-C, and the user plane (user panel, UP) interface may be F1-U. The embodiments of the present application do not limit the specific names of the interfaces.
  • the CU and the DU may be divided according to the protocol layers of the wireless network: for example, the functions of the PDCP layer and the protocol layers above (such as the RRC layer and the SDAP layer, etc.) are set in the CU, and the functions of the protocol layers below the PDCP layer (such as the RLC layer, the MAC layer, and the PHY layer, etc.) are set in the DU; for another example, the functions of the protocol layers above the PDCP layer are set in the CU, and the functions of the protocol layers below the PDCP layer are set in the DU, without limitation.
  • the functions of the PDCP layer and the protocol layers above such as the RRC layer and the SDAP layer, etc.
  • the functions of the protocol layers below the PDCP layer such as the RLC layer, the MAC layer, and the PHY layer, etc.
  • the above division of the processing functions of CU and DU according to the protocol layer is only an example, and the division can also be carried out in other ways.
  • the CU or DU can be divided into functions with more protocol layers, and the CU or DU can be divided into partial processing functions with protocol layers.
  • some functions of the RLC layer and the functions of the protocol layers above the RLC layer are set in the CU, and the remaining functions of the RLC layer and the functions of the protocol layers below the RLC layer are set in the DU.
  • the functions of the CU or DU can be divided according to the service type or other system requirements, such as division by latency, and the functions whose processing time needs to meet the latency requirements are set in the DU, and the functions that do not need to meet the latency requirements are set in the CU.
  • the CU may have one or more functions of the core network.
  • the radio unit (RU) of the DU can be set remotely.
  • the RU has a radio frequency function.
  • the DU and the RU can be divided at the PHY layer.
  • the DU can implement the high-level functions in the PHY layer
  • the RU can implement the low-level functions in the PHY layer.
  • the functions of the PHY layer may include at least one of the following: adding cyclic redundancy check (CRC) bits, channel coding, rate matching, scrambling, modulation, layer mapping, precoding, resource mapping, physical antenna mapping, or radio frequency transmission function.
  • CRC cyclic redundancy check
  • the functions of the PHY layer may include at least one of the following: CRC check, channel decoding, rate matching, descrambling, demodulation, layer mapping, channel detection, resource demapping, physical antenna demapping, or radio frequency receiving function.
  • the high-level functions in the PHY layer may include a part of the functions of the PHY layer, which is closer to the MAC layer; the low-level functions in the PHY layer may include another part of the functions of the PHY layer, for example, this part of the functions is closer to the radio frequency function.
  • the high-level functions in the PHY layer may include adding CRC bits, channel coding, rate matching, scrambling, modulation, and layer mapping
  • the low-level functions in the PHY layer may include precoding, resource mapping, physical antenna mapping, and RF transmission functions
  • the high-level functions in the PHY layer may include adding CRC bits, channel coding, rate matching, scrambling, modulation, layer mapping, and precoding
  • the low-level functions in the PHY layer may include resource mapping, physical antenna mapping, and RF transmission functions.
  • the high-level functions in the PHY layer may include CRC checking, channel coding, rate matching, scrambling, modulation, layer mapping, and precoding
  • the low-level functions in the PHY layer may include resource mapping, physical antenna mapping, and RF transmission functions.
  • Decoding, rate matching, decoding, demodulation, and layer mapping the low-level functions in the PHY layer may include channel detection, resource demapping, physical antenna demapping, and RF reception functions; or, the high-level functions in the PHY layer may include CRC checking, channel decoding, rate matching, decoding, demodulation, layer mapping, and channel detection, and the low-level functions in the PHY layer may include resource demapping, physical antenna demapping, and RF reception functions.
  • the functions of the CU can be further divided, and the control plane and the user plane can be separated and implemented through different entities.
  • the separated entities are the control plane CU entity (i.e., CU-CP entity) and the user plane CU entity (i.e., CU-UP entity).
  • the CU-CP entity and the CU-UP entity can be connected to the DU respectively.
  • the entity can be understood as a module or a unit, and its existence form can be a hardware structure, a software module, or a hardware structure plus a software module, without limitation.
  • any one of the above-mentioned CU, CU-CP, CU-UP, DU and RU can be a software module, a hardware structure, or a software module plus a hardware structure, without limitation.
  • the existence forms of different entities can be the same or different.
  • CU, CU-CP, CU-UP and DU are software modules
  • RU is a hardware structure.
  • all possible combinations are no longer listed here.
  • These modules and their execution methods are also within the scope of protection of the embodiments of the present application.
  • the method of the embodiment of the present application when executed by an access network device, it can be specifically executed by at least one of CU, CU-CP, CU-UP, DU, or RU.
  • network equipment can configure multiple TRPs into a logical cell, that is, a multi-TRP cell, and the terminal device can access the cell through any one of the TRPs.
  • multiple TRPs can be understood as multiple antennas that can be used by the network device.
  • the network device includes a remote radio unit (RRU), and multiple channels of the RRU are connected to multiple antennas, and each antenna is equivalent to a TRP, as shown in Figure 2; for another example, the network device includes multiple RRUs, each RRU is connected to an antenna, and each antenna is equivalent to a TRP, as shown in Figure 3.
  • RRU remote radio unit
  • the network device in order to optimize the network that provides services to terminal devices in a targeted manner, for example, to evaluate the weak coverage performance of the TRP where the terminal device resides and optimize the antenna corresponding to the TRP, it is necessary for the network device to clearly identify the TRP where the terminal device currently resides.
  • an embodiment of the present application provides a communication method, when a network device sends a first signal through different TRPs, the identifiers of the beams used by different TRPs are different, so that the network device can uniquely determine the TRP corresponding to the identifier of the target beam in the second information as the TRP where the terminal device currently resides based on the identifier of the target beam reported by the terminal device and the second information, thereby optimizing the network that provides services to the terminal device.
  • FIG4 shows an exemplary interaction flow chart of the method.
  • Step 403 The network device sends a first signal through beams corresponding to at least two TRPs in the same cell, wherein the identifier of at least one beam corresponding to different TRPs is different. Accordingly, the terminal device receives the first signal from the network device on the beams corresponding to at least two TRPs in the same cell.
  • the network device When the network device sends the first signal through TRP, it allocates different beams with different identifiers to different TRPs. For example, assuming that the multi-TRP cell configured by the network device includes three TRPs, the network device can send the first signal to the terminal device through these three TRPs respectively.
  • the three TRPs are respectively recorded as TRP1, TRP2, and TRP3.
  • the network device allocates 2 beams to TRP1, and the identifiers of the two beams are identifier 1 and identifier 2 respectively, and allocates 1 beam to TRP2, and the identifier of the beam is identifier 3, and allocates 3 beams to TRP3, and the identifiers of the three beams are identifier 4, identifier 5, and identifier 6 respectively.
  • the network device sends the first signal on each TRP in sequence.
  • the network device can first send the first signal through the beam corresponding to identifier 1 and the beam corresponding to identifier 2 allocated to TRP1, and then the network device sends the first signal through the beam corresponding to identifier 3 allocated to TRP2, and then the network device sends the first signal through the beam corresponding to identifier 4, the beam corresponding to identifier 5, and the beam corresponding to identifier 6 allocated to TRP3.
  • Step 404 The terminal device sends first information to the network device, the first information including an identifier of a target beam, the target beam including one of the beams corresponding to the at least two TRPs, and the energy of a first signal received by the terminal device on the target beam is the largest among the first signals received on the beams corresponding to the at least two TRPs. Accordingly, the network device receives the first information from the terminal device.
  • the terminal device After the terminal device receives the first signal from the network device on the beams corresponding to at least two TRPs in the same cell, it can determine the first signal with the largest energy from the received first signals, and determine the beam corresponding to the first signal with the largest energy as the target beam. After determining the target beam, the terminal device can report the identifier of the target beam to the network device through the first information.
  • the network device sends the first signal through TRP1, TRP2, and TRP3 in sequence, and the terminal device can determine the TRP in which the terminal device is currently located from TRP1, TRP2, and TRP3 based on the first signals received from TRP1, TRP2, and TRP3.
  • the terminal device can measure the received multiple first signals, thereby To determine the first signal with the largest energy, for example, the terminal device may measure any one of the following parameters of the first signal:
  • RSRP Reference signal received power
  • SINR signal to interference plus noise ratio
  • RSRQ reference signal received quality
  • RSSI received signal strength indicator
  • the terminal device can determine the beam corresponding to identifier 5 as the target beam.
  • Step 405 the network device determines the TRP where the terminal device currently resides based on the identifier of the target beam and the second information, the second information includes a mapping relationship between the identifiers of multiple beams and multiple TRPs, the multiple TRPs include at least two TRPs, and the multiple beams include beams corresponding to the at least two TRPs.
  • the network device After the network device obtains the identifier of the target beam, it can determine the TRP corresponding to the identifier of the target beam among multiple TRPs as the TRP where the terminal device is currently located based on the mapping relationship between the identifier of the target beam, multiple beam identifiers and multiple TRPs.
  • the second information may be information pre-stored in the network device, or may be information acquired by the network device, for example, may be acquired by the network device from a core network.
  • the network device when the network device sends the first signal through different TRPs, the identifiers of the beams used by different TRPs are different. Therefore, the network device can uniquely determine the TRP corresponding to the identifier of the target beam in the second information as the TRP where the terminal device currently resides based on the identifier of the target beam reported by the terminal device and the second information, thereby optimizing the network that provides services to the terminal device.
  • method 400 may further include the following steps before step 403:
  • the network device determines parameters for generating beams corresponding to at least two TRPs based on the number of beams corresponding to at least two TRPs and third information, where the third information includes a mapping relationship between multiple numbers of beams and multiple parameters for generating beams, and the multiple numbers of beams include the number of beams corresponding to each of the at least two TRPs.
  • Step 402 The network device generates at least two beams corresponding to the TRP according to the parameters for generating the at least two beams corresponding to the TRP.
  • the network device After the network device determines the number of beams allocated to each TRP, it can determine the parameters of the beam generation corresponding to the number of beams corresponding to the TRP among the multiple parameters of the beam generation as the parameters for generating the beams corresponding to the TRP based on the mapping relationship between the number of beams corresponding to at least two TRPs, the number of multiple beams and the multiple parameters for generating beams. Thereafter, based on the determined parameters for generating beams, generate beams corresponding to at least two TRPs.
  • the network device sends a first signal through TRP1, TRP2, and TRP3. Assume that the network device determines to allocate 2 beams to TRP1, 1 beam to TRP2, and 3 beams to TRP3. In this case, the network device can use the parameters of the generated beams corresponding to the number of beams 2 in the mapping relationship as the parameters for generating the beams corresponding to TRP1, and generate 2 beams based on the parameters, and use these 2 beams as the beams allocated to TRP1. In addition, the network device can use the parameters of the generated beams corresponding to the number of beams 1 in the mapping relationship as the parameters for generating the beams corresponding to TRP2, and generate 1 beam based on the parameters, and use this 1 beam as the beam allocated to TRP2.
  • the network device can use the parameters of the generated beams corresponding to the number of beams 3 in the mapping relationship as the parameters for generating the beams corresponding to TRP3, and generate 3 beams based on the parameters, and use these 3 beams as the beams allocated to TRP3.
  • the network device may determine the number of beams allocated to each TRP in a multi-TRP cell in the following manner:
  • Method 1 The network device determines the number of beams allocated to each TRP in the multi-TRP cell based on the number of TRPs in the multi-TRP cell and the number of beams used to send the first signal.
  • the TRP cell includes three TRPs, namely, TRP1, TRP2, and TRP3, and the number of beams used to send the first signal is 6.
  • B TRPi represents the number of beams allocated to TRPi, i traverses from 1 to N, N represents the number of TRPs in the multi-TRP cell, M represents the number of beams used to send the first signal, and the function floor() represents rounding down.
  • the network device can determine to allocate two beams to each of TRP1, TRP2, and TRP3.
  • Method 2 The network device determines the number of beams allocated to TRP num -1 TRPs in a multi-TRP cell based on the number of TRPs in the multi-TRP cell and the number of beams used to send the first signal, and determines the number of beams allocated to a TRP other than TRP num -1 TRPs in the multi-TRP cell based on the number of beams used to send the first signal and the number of beams allocated to TRP num -1 TRPs.
  • the TRP cell includes three TRPs, namely, TRP1, TRP2, and TRP3, and the number of beams used to send the first signal is 8.
  • the network device can determine the number of beams allocated to two TRPs in TRP1, TRP2, and TRP3 based on the relationship (1), and then determine the number of beams allocated to a TRP other than the above two TRPs in TRP1, TRP2, and TRP3 according to the number of beams used to send the first signal and the number of beams allocated to two TRPs in TRP1, TRP2, and TRP3.
  • the network device determines the number of beams allocated to TRP1 and TRP2 respectively according to equation (1).
  • the network device can determine to allocate 2 beams to TRP1 and TRP2 respectively according to equation (1).
  • the network device can determine the number of beams allocated to TRP3 according to the following equation:
  • B TRPN represents the number of beams allocated to TRPN
  • N represents the number of TRPs in a multi-TRP cell
  • M represents the number of beams used to send the first signal
  • B TRPi represents the number of beams allocated to TRPi.
  • the network device can determine to allocate 4 beams to TRP3.
  • the first signal received by the terminal device on the target beam satisfies the condition that the terminal device currently resides under the TRP corresponding to the target beam, including: the energy of the first signal received by the terminal device on the target beam is the largest among the first signals received on beams corresponding to at least two TRPs.
  • the network device sends the first signal through TRP1, TRP2, and TRP3 in sequence. Assume that the total number of beams allocated by the network device to TRP1, TRP2, and TRP3 is 6.
  • the terminal device can determine the first signal from a certain beam (i.e., the target beam) from the multiple first signals received on the 6 beams. The first signal has the largest energy among the multiple first signals received by the terminal device on the 6 beams. Afterwards, the terminal device can report the identifier of the target beam to the network device.
  • the first information reported by the terminal device to the network device may also include the energy of the first signal received by the terminal device on the target beam.
  • the terminal device After determining the target beam, the terminal device can report the energy of the first signal received by the terminal device on the target beam in addition to reporting the target identifier to the network device through the first information.
  • the terminal device can also report to the network device the energy of the first signal received on other beams except the target beam and the identifiers of other beams, which is not limited in this embodiment of the present application.
  • the first signal may include a synchronization signal block (sync signal block, SSB).
  • SSB synchronization signal block
  • the identification of the beam may include an index number of the beam.
  • the energy of the first signal received by the above-mentioned terminal device on the target beam is the maximum among the first signals received on the beams corresponding to at least two TRPs. This is only an example of the condition that the terminal device currently resides under the TRP corresponding to the target beam, but the embodiments of the present application are not limited to this.
  • the terminal includes hardware structures and/or software modules corresponding to the execution of each function.
  • 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 the form of hardware or computer software driving hardware depends on the specific application scenario and design constraints of the technical solution.
  • Figures 5 and 6 are schematic diagrams of possible communication devices provided by embodiments of the present application. These communication devices can be used to implement the functions of the network device or terminal device in the above method embodiments, and thus can also achieve the beneficial effects possessed by the above method embodiments.
  • the communication device can be the terminal device 120a or the terminal device 120j as shown in Figure 1, or the wireless access network device 120 as shown in Figure 1, or a module (such as a chip) applied to a terminal device or a network device.
  • the communication device 500 includes a transceiver unit 510 and a processing unit 520.
  • the communication device 500 is used to implement the functions of the network device or terminal device in the method embodiment shown in Fig. 4 above.
  • the transceiver unit 510 is used to send a first signal through beams corresponding to at least two transmission receiving points TRP, and the at least two TRPs belong to the same cell, wherein the identifier of at least one beam corresponding to different TRPs is different.
  • the transceiver unit 510 is also used to receive first information from a terminal device, the first information includes an identifier of a target beam, the target beam is one of the beams corresponding to the at least two TRPs, and the energy of the first signal received by the terminal device on the target beam is the largest among the beams corresponding to the at least two TRPs.
  • the processing unit 520 determines the TRP where the terminal device is currently residing based on the identifier of the target beam and the second information, and the second information includes the beam. The mapping relationship between the bundle identifier and the TRP.
  • the transceiver unit 510 is used to receive a first signal from a network device on beams corresponding to at least two TRPs, and the at least two TRPs belong to the same cell, wherein the identifier of at least one beam corresponding to different TRPs is different.
  • the transceiver unit 510 is also used to send first information to the network device, wherein the first information includes an identifier of a target beam, and the target beam includes one of the beams corresponding to the at least two TRPs, and the energy of the first signal received by the terminal device on the target beam is the largest among the beams corresponding to the at least two TRPs.
  • transceiver unit 510 and the processing unit 520 can be directly obtained by referring to the relevant description in the method embodiment shown in FIG. 4 , and will not be repeated here.
  • FIG6 shows a simplified schematic diagram of a communication device 600.
  • the device 600 is used to implement the functions of a network element of an embodiment of the present application.
  • the network element may be a base station, a terminal, a DU, a CU, a CU-CP, a CU-UP, or a RU.
  • the device 600 may be the network element, or a device that can be installed in the network element, or a device that can be used in conjunction with the network element, without limitation.
  • the device may be a chip or a chip system.
  • the device 600 includes an interface circuit 620 and a processor 610.
  • the processor 610 is configured to execute a program 640.
  • the processor 610 may store the program 640, or obtain the program 640 from other devices or equipment (eg, from the memory 630 or downloaded from a third-party website, etc.).
  • the device 600 includes a memory 630.
  • the memory 630 is used to store a program 650.
  • the program 650 may be pre-stored or subsequently loaded.
  • the memory 630 may also be used to store necessary data. These components work together to provide various functions described in the embodiments of the present application.
  • the processor 610 may include one or more processors as a combination of computing devices.
  • the processor 610 may include one or more of the following: a microprocessor, a microcontroller, a digital signal processor (DSP), a digital signal processing device (DSPD), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA), a programmable logic device (PLD), gated logic, transistor logic, discrete hardware circuits, processing circuits or other suitable hardware, firmware, and/or a combination of hardware and software configured to perform the various functions described in the embodiments of the present application.
  • DSP digital signal processor
  • DSPD digital signal processing device
  • ASIC application specific integrated circuit
  • FPGA field programmable gate array
  • PLD programmable logic device
  • Processor 610 may be a general purpose processor or a dedicated processor.
  • processor 610 may be a baseband processor or a central processing unit.
  • a baseband processor may be used to process communication protocols and communication data.
  • a central processing unit may be used to execute software programs and process data in the software programs.
  • the interface circuit 620 may include any suitable hardware or software for enabling communication with one or more computer devices (e.g., network elements of embodiments of the present application).
  • the interface circuit 620 may include terminals and/or pins for coupling wired connected wires or coupling wirelessly connected wireless transceivers.
  • the interface circuit 620 may include a transmitter, a receiver, a transceiver, and/or an antenna.
  • the interface may be configured to enable communication between computer devices (e.g., network elements of embodiments of the present application) using any available protocol (e.g., 3GPP standard protocols).
  • the program in the embodiments of the present application refers to software in a broad sense.
  • the software may be a program code, a program, a subroutine, an instruction set, a code, a code segment, a software module, an application, a software application, etc.
  • the program may be run in a processor and/or a computer to perform the various functions and/or processes described in the embodiments of the present application.
  • the memory 630 may store necessary data required when the processor 610 executes the software.
  • the memory 630 may be implemented using any suitable storage technology.
  • the memory 630 may be any available storage medium that can be accessed by the processor and/or computer.
  • Non-limiting examples of storage media include random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), compact disc read-only memory (CD-ROM), removable media, optical disk storage, magnetic disk storage media, magnetic storage devices, flash memory, registers, state memory, remotely mounted memory, local or remote memory components, or any other medium that can carry or store software, data or information and can be accessed by the processor/computer.
  • the memory 630 and the processor 610 may be provided separately or integrated together.
  • the processor 610 may read information from the memory 630, and store and/or write information in the memory.
  • the memory 630 may be integrated in the processor 610.
  • the processor 610 and the memory 630 may be provided in an integrated circuit (e.g., an application-specific integrated circuit (ASIC)).
  • the integrated circuit may be provided in a network element or other network node in an embodiment of the present application.
  • the processor 610 is used to execute the function of the processing unit 520
  • the interface circuit 620 is used to execute the function of the transceiver unit 510 .
  • the network device chip When the communication device is a chip applied to a network device, the network device chip implements the network device in the above method embodiment. Function.
  • the network device chip receives information from other modules in the network device (such as a radio frequency module or an antenna), and the information is sent by the terminal device to the network device; or the network device chip sends information to other modules in the network device (such as a radio frequency module or an antenna), and the information is sent by the network device to the terminal device.
  • the terminal device chip When the above communication device is a chip applied to a terminal device, the terminal device chip implements the functions of the terminal device in the above method embodiment.
  • the terminal device chip receives information from other modules in the terminal device (such as a radio frequency module or an antenna), and the information is sent by the network device to the terminal device; or the terminal device chip sends information to other modules in the terminal device (such as a radio frequency module or an antenna), and the information is sent by the terminal device to the network device.
  • the method steps in the embodiments of the present application can be implemented in hardware or in software instructions that can be executed by a processor.
  • the software instructions can be composed of corresponding software modules, and the software modules can be stored in random access memory, flash memory, read-only memory, programmable read-only memory, erasable programmable read-only memory, electrically erasable programmable read-only memory, register, hard disk, mobile hard disk, CD-ROM or any other form of storage medium known in the art.
  • An exemplary storage medium is coupled to the processor so that the processor can read information from the storage medium and write information to the storage medium.
  • the storage medium can also be a component of the processor.
  • the processor and the storage medium can be located in an ASIC.
  • the ASIC can be located in a terminal.
  • the processor and the storage medium can also be present in the terminal as discrete components.
  • the computer program product includes one or more computer programs or instructions.
  • the computer may be a general-purpose computer, a special-purpose computer, a computer network, a network device, a user device or other programmable device.
  • the computer program or instruction may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer program or instruction may be transmitted from one website site, computer, server or data center to another website site, computer, server or data center by wired or wireless means.
  • the computer-readable storage medium may be any available medium that a computer can access or a data storage device such as a server, data center, etc. that integrates one or more available media.
  • the available medium may be a magnetic medium, for example, a floppy disk, a hard disk, a tape; it may also be an optical medium, for example, a digital video disc; it may also be a semiconductor medium, for example, a solid-state hard disk.
  • the computer-readable storage medium may be a volatile or nonvolatile storage medium, or may include both volatile and nonvolatile types of storage media.
  • “at least one” refers to one or more, and “more than one” refers to two or more.
  • “And/or” describes the association relationship of associated objects, indicating that three relationships may exist.
  • a and/or B may represent: A exists alone, A and B exist at the same time, and B exists alone, where A and B may be singular or plural.
  • the character “/” generally indicates that the previous and next associated objects are in an “or” relationship; in the formula of the embodiments of the present application, the character “/” indicates that the previous and next associated objects are in a “division” relationship.
  • “Including at least one of A, B and C” may represent: including A; including B; including C; including A and B; including A and C; including B and C; including A, B and C.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Databases & Information Systems (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention concerne un procédé de communication et un appareil de communication, qui s'appliquent au domaine technique des communications sans fil. Le procédé consiste en : l'envoi par un dispositif de réseau d'un premier signal au moyen de faisceaux correspondant à au moins deux points de transmission-réception (TRP) dans une même cellule, des identifiants d'au moins un faisceau correspondant respectivement à différents TRP étant différents ; puis la réception par le dispositif de réseau de premières informations en provenance d'un dispositif terminal, les premières informations contenant un identifiant d'un faisceau cible, le faisceau cible contenant l'un des faisceaux correspondant auxdits au moins deux TRP, et l'énergie du premier signal reçu par le dispositif terminal sur le faisceau cible étant la plus grande parmi les faisceaux correspondant auxdits au moins deux TRP ; puis la détermination par le dispositif de réseau détermine, en fonction de l'identifiant du faisceau cible et des deuxièmes informations, d'un TRP sur lequel le dispositif terminal est actuellement mis en attente, les deuxièmes informations contenant la relation de mappage entre les identifiants des faisceaux et les TRP. Selon le procédé, le dispositif de réseau peut identifier, dans une cellule multi-TRP, le TRP sur lequel le dispositif terminal est actuellement mis en attente, de sorte qu'un réseau fournissant un service pour le dispositif terminal est optimisé.
PCT/CN2023/121642 2022-11-16 2023-09-26 Procédé de communication et appareil de communication WO2024103973A1 (fr)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20170208494A1 (en) * 2016-01-14 2017-07-20 Samsung Electronics Co., Ltd. Method and apparatus for generating cell measurement information in a wireless communication system
CN109151841A (zh) * 2017-06-16 2019-01-04 电信科学技术研究院 一种多trp下波束的传输、接收方法、基站及终端
US20220302994A1 (en) * 2021-03-18 2022-09-22 Samsung Electronics Co., Ltd. Multi transmission reception point (trp) system and method thereof

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20170208494A1 (en) * 2016-01-14 2017-07-20 Samsung Electronics Co., Ltd. Method and apparatus for generating cell measurement information in a wireless communication system
CN109151841A (zh) * 2017-06-16 2019-01-04 电信科学技术研究院 一种多trp下波束的传输、接收方法、基站及终端
US20220302994A1 (en) * 2021-03-18 2022-09-22 Samsung Electronics Co., Ltd. Multi transmission reception point (trp) system and method thereof

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