WO2020164373A1 - 一种通信方法、装置、系统及存储介质 - Google Patents

一种通信方法、装置、系统及存储介质 Download PDF

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Publication number
WO2020164373A1
WO2020164373A1 PCT/CN2020/073324 CN2020073324W WO2020164373A1 WO 2020164373 A1 WO2020164373 A1 WO 2020164373A1 CN 2020073324 W CN2020073324 W CN 2020073324W WO 2020164373 A1 WO2020164373 A1 WO 2020164373A1
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WIPO (PCT)
Prior art keywords
pci
ssb
access network
network device
cell
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PCT/CN2020/073324
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English (en)
French (fr)
Inventor
石小丽
奥鲁佛松·亨里克
张宏卓
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华为技术有限公司
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Priority to EP20755290.2A priority Critical patent/EP3910989A4/en
Publication of WO2020164373A1 publication Critical patent/WO2020164373A1/zh
Priority to US17/400,438 priority patent/US12069520B2/en

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    • 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
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • 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
    • H04W16/02—Resource partitioning among network components, e.g. reuse partitioning
    • H04W16/12—Fixed resource partitioning
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/26—Network addressing or numbering for mobility support
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/08—Access point devices
    • H04W88/085—Access point devices with remote components
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W92/00—Interfaces specially adapted for wireless communication networks
    • H04W92/16—Interfaces between hierarchically similar devices
    • H04W92/20—Interfaces between hierarchically similar devices between access points

Definitions

  • This application relates to the field of communication technology, and in particular to a communication method, device, system and storage medium.
  • a physical cell identity (PCI) is a basic parameter of a wireless cell, used to distinguish different cells, and one cell can correspond to one PCI.
  • PCI physical cell identity
  • the base station mainly detects whether a PCI conflict occurs by interacting with PCI information of cells under each base station.
  • the present application provides a communication method, device, system, and storage medium to reduce PCI conflicts so as to improve the success rate of terminal handover.
  • the present application provides a communication method.
  • the method includes a first access network device determining that a first PCI of a first cell conflicts with a second PCI of a second cell, and the first access network device communicates with the second
  • the network-connected device and/or the centralized management node send indication information, where the first PCI corresponds to the first synchronization signal and PBCH block (SSB), the second PCI corresponds to the second SSB, and the indication information can be used to indicate the first synchronous broadcast signal block (synchronization signal and PBCH block, SSB).
  • One PCI conflicts with the second PCI, and the centralized management node is used to manage the first access network device and the second access network device.
  • the first PCI corresponds to the first SSB
  • the second PCI corresponds to the second SSB.
  • the first access network device is based on the first PCI of the first cell and the second cell.
  • the second PCI determines that the first PCI conflicts with the second PCI. In this way, the detection of PCI conflicts corresponding to the SSB in the NR system can be realized, which helps to eliminate or reduce the PCI conflicts in the NR network, thereby improving the success rate of terminal handover, and thereby reducing the call drop rate of the terminal.
  • the first cell corresponds to a first PCI
  • the second cell corresponds to a second PCI
  • the first cell includes one or more first SSBs.
  • the first PCI of the first cell is the first PCI corresponding to the first SSB.
  • the first PCI of the first cell may refer to the first PCI corresponding to one of the multiple first SSBs.
  • the second cell may include one or more second SSBs.
  • the second PCI of the second cell is the second PCI corresponding to the second SSB.
  • the second PCI of the second cell may refer to the second PCI corresponding to one second SSB among the multiple second SSBs.
  • the first cell belongs to a first access network device
  • the second cell belongs to a second access network device.
  • the first access network device is the master node
  • the first cell is a cell managed by the master node
  • the second cell is a cell managed by the master node.
  • the second access network device is a secondary node
  • the second cell is a cell managed by the secondary node.
  • the first access network device and the second access network device are different nodes (such as base stations), and the first cell and the second cell are managed by different nodes, respectively.
  • the first access network device and the second access network device are different centralized units (central units, CU), and the first cell and the second cell are respectively managed by different CUs.
  • both the first cell and the second cell belong to the first access network device.
  • the first access network device is a master node
  • the second access network device is a secondary node
  • the first cell and the second cell are different cells managed by the master node.
  • the first access network device is a base station
  • the first cell and the second cell are different cells managed by the base station.
  • both the first cell and the second cell belong to the second access network device.
  • the first access network device is a CU
  • the second access network device is a distributed unit (DU)
  • the first cell and the second cell are different cells managed by the DU.
  • the first access network device is a master node
  • the second access network device is a secondary node
  • the first cell and the second cell are different cells managed by the secondary node.
  • the second access network device is a base station
  • the first cell and the second cell are different cells managed by the base station.
  • the first cell belongs to the second access network device, and the second cell belongs to the third access network device, where both the second access network device and the third access network device are operated by the first access network device management.
  • the first access network device is a CU
  • the second access network device and the third access network device are different DUs managed by the CU
  • the first cell and the second subdivision are under different DU management.
  • the first access network device obtains SSB information corresponding to the first cell and SSB information corresponding to the second cell.
  • the SSB information corresponding to the first cell includes the first PCI and the SSB corresponding to the second cell.
  • the information includes the second PCI.
  • the SSB information corresponding to the first cell further includes a frequency point corresponding to the first SSB
  • the SSB information corresponding to the second cell further includes a frequency point corresponding to the second SSB
  • the SSB information corresponding to the first cell may also include the type of the first SSB
  • the SSB information corresponding to the second cell may also include the type of the second SSB, SSB (first SSB or second SSB).
  • the type of SSB is cell definition-synchronous broadcast signal block (cell defining SSB, CD-SBB) or non-cell definition-synchronous broadcast signal block (non cell defining SSB, non CD-SSB).
  • the first access network device can detect the conflicting type of the first PCI and the second PCI that are in conflict according to the type of the second SSB, and can preferentially choose to modify the PCI corresponding to the non-CD-SSB, which helps to reduce the cost. Modify the impact of PCI on the access network equipment of terminal equipment.
  • the first access network device determines that the first SSB and the second SSB are adjacent, the frequency corresponding to the first SSB and the frequency corresponding to the second SSB are the same, and When the first PCI and the second PCI are the same, it can be determined that the first PCI and the second PCI conflict.
  • the SSB information corresponding to the second cell may further include any one or more of the MTC corresponding to the second SSB, the SCS corresponding to the second SSB, and the time domain corresponding to the second SSB.
  • the SSB information corresponding to the first cell may further include any one or more of the MTC corresponding to the first SSB, the SCS corresponding to the first SSB, and the time domain corresponding to the first SSB.
  • the first access network device determines that the first SSB is adjacent to the second SSB and the frequency and/or measurement timing configuration (measurement timing configuration, MTC) corresponding to the first SSB ) And/or subcarrier spacing (SCS) and/or time domain (SSB occasion) are respectively the same as the frequency point and/or MTC and/or SCS and/or SSB occasion corresponding to the second SSB, and the first
  • MTC measurement timing configuration
  • SCS subcarrier spacing
  • SSB occasion time domain
  • the frequency point and/or MTC and/or SCS and/or SSB occurrence corresponding to the first SSB are the same as the frequency point and/or MTC and/or SCS and/or SSB occurrence respectively corresponding to the second SSB, which may specifically refer to :
  • the frequency point corresponding to the first SSB is the same as the frequency point corresponding to the second SSB
  • the MTC corresponding to the first SSB is the same as the MTC corresponding to the second SSB
  • the SCS corresponding to the first SSB is the same as the SCS corresponding to the second SSB.
  • the SSB occurrence corresponding to the SSB is the same as the SSB occurrence corresponding to the second SSB.
  • Case 1 The first SSB and the second SSB are directly adjacent. In the second case, the first SSB and the second SSB are directly adjacent to the third SSB respectively. In the second case, the first SSB and the second SSB are also indirectly adjacent to each other.
  • the indication information includes the second PCI, the frequency corresponding to the second SSB, the type of the second SSB, the MTC corresponding to the second SSB, the SCS corresponding to the second SSB, and the time corresponding to the second SSB.
  • the domain and NCGI corresponding to the second SSB One or more of the domain and NCGI corresponding to the second SSB.
  • the indication information may include the second PCI; or, the indication information may include the types of the second PCI and the second SSB; or, the indication information may include the frequency points corresponding to the second PCI and the second SSB; or, the indication information It may include the second PCI, the type of the second SSB, and the frequency point corresponding to the second SSB, or the indication information may also include other possible combinations or any of them, which is not limited in this application. Based on the content of the instruction information, the PCI that needs to be modified can be determined.
  • the first access network device may be a CU, the second access network device and the third access network device may be DUs, the CU corresponds to at least one DU, and the CU supports the packet data convergence protocol layer ( at least one of the protocol stack function of packet data convergence protocol, PDCP), the protocol stack function of radio resource control (radio resource control, RRC), and the protocol stack function of service data adaptation protocol (service data adaptation protocol, SDAP), DU supports at least one of radio link control (RLC) protocol stack function, medium access control (MAC) protocol stack function, and physical layer (PHY) protocol stack function ;
  • the first access network device can send instruction information to the second access network device through the F1 interface.
  • the first access network device may be a master node, and the second access network device may be a secondary node, and one primary node corresponds to at least one secondary node.
  • the interfaces through which the first access network device sends instruction information to the second access network device may be different.
  • the first access network device may send instruction information to the second access network device through the Xn interface; for another example, the first access network device may send instruction information to the second access network device through the X2 interface.
  • the first access network device may modify the first PCI and/or the second PCI to realize that the modified PCI corresponding to the first SSB does not conflict with the second PCI.
  • the first access network device may obtain the range information of the first PCI and/or the second PCI range information, the range information of the first PCI is the range of PCIs available in the first cell, and the second PCI range information is the range of PCIs available in the second cell PCI range.
  • the PCI range available for the first cell is the PCI range available for the first SSB.
  • the PCI range available for the first cell refers to the PCI range available for each of the plurality of first SSBs.
  • the second cell includes a second SSB
  • the PCI range available for the second cell is the PCI range available for the second SSB.
  • the PCI range available for the second cell refers to the PCI range available for each second SSB among the multiple second SSBs.
  • an available PCI set can be maintained in the first access network device, and the first access network device can use any PCI in the PCI set.
  • the first access network device can select an available PCI from the maintained PCI set to replace the first PCI and/or the second PCI.
  • the second access network device can ask the OAM for the available PCI, which is also helpful to improve the modification.
  • the centralized management node may be an operation management and maintenance (OAM) device.
  • OAM operation management and maintenance
  • the present application provides a communication method.
  • the method includes a second access network device receiving instruction information from a first access network device, and the second access network device modifies the second PCI according to the instruction information.
  • the indication information is used to indicate that the first PCI of the first cell and the second PCI of the second cell conflict, the first PCI corresponds to the first SSB, and the second PCI corresponds to the second SSB.
  • the first PCI corresponds to the first SSB
  • the second PCI corresponds to the second SSB.
  • the indication information received by the second access network device is used to indicate the first PCI and the second PCI
  • the second access network device can modify the second PCI according to the instruction information so that the modified PCI corresponding to the second SSB does not conflict with the first PCI. This helps eliminate or reduce PCI conflicts in the NR network. Therefore, the success rate of terminal handover can be improved, and the call drop rate of the terminal can be reduced.
  • the first cell belongs to the first access network device, and the second cell belongs to the second access network device; or both the first cell and the second cell belong to the first access network device; Or, both the first cell and the second cell belong to the second access network device; or, the first cell belongs to the second access network device, and the second cell belongs to the third access network device, where the second access network Both the device and the third access network device are managed by the first access network device.
  • the second access network device may send instruction information to the centralized management node, so that the centralized management node modifies the second PCI or modifies the first PCI according to the instruction information.
  • the second access network device sends the SSB information corresponding to the second cell to the first access network device, the SSB information corresponding to the second cell includes the second PCI, and the second cell belongs to the second access Network access equipment.
  • the second access network device may determine the second SSB according to the instruction information, and modify the second PCI corresponding to the second SSB.
  • an available PCI set may be maintained in the second access network device, and the second access network device may use any PCI in the PCI set.
  • the second access network device can also select an available PCI from the maintained PCI set to replace the second PCI. There is no need for the second access network device to request the available PCI from the OAM, which also helps improve the efficiency of modifying the conflicting PCI.
  • the SSB information corresponding to the second cell also includes the frequency corresponding to the second SSB and/or the type of the second SSB, where the type of the second SSB is CD-SBB or nonCD-SSB .
  • the indication information includes the types of the second PCI and the second SSB. In another possible implementation manner, the indication information includes frequency points corresponding to the second PCI and the second SSB. In another possible implementation manner, the indication information includes the second PCI, the type of the second SSB, and the corresponding frequency point of the second SSB.
  • the first access network device is a CU
  • the second access network device and the third access network device are both DUs
  • the CU corresponds to at least one DU
  • the CU supports the PDCP protocol stack function and RRC
  • the DU supports at least one of the protocol stack function of RLC, the protocol stack function of MAC, and the protocol stack function of PHY; in this scenario, the second access The network device can receive the instruction information from the first access network device through the F1 interface.
  • the first access network device is a master node
  • the second access network device is a slave node
  • one master node corresponds to at least one slave node.
  • one situation is that the second access network device can receive the instruction information from the first access network device through the Xn interface; the other situation is that the second access network device can receive the instruction information from the first access network device through the X2 interface. Instruction information of the access network device.
  • an embodiment of the present application provides a communication method.
  • the method includes that the first access network device obtains the range information of the first PCI and/or the range information of the second PCI, which can be modified according to the range information of the first PCI The first PCI, and/or, modify the second PCI according to the range information of the second PCI.
  • the range information of the first PCI is the available PCI range of the first cell
  • the range information of the second PCI is the available PCI range of the second cell.
  • the first access network device can modify the conflicting PCI according to the acquired PCI range information, which helps to improve the efficiency of modifying the PCI.
  • the acquisition of the range information of the first PCI and/or the range information of the second PCI by the first access network device can be divided into the following four situations.
  • Case 1 When the first cell belongs to the first access network device and the second cell belongs to the second access network device, the first access network device can obtain the range information of the first PCI locally, and the first access The network device may obtain the range information of the second PCI from the second access network device.
  • the range information of the first PCI may be determined by the first access network device itself, or may be sent to the first access network device after the OAM of the first access network device is determined.
  • the range information of the second PCI may also be determined by the second access network device itself, or may be sent to the second access network device after the OAM of the second access network device is determined.
  • Case 2 In the case where both the first cell and the second cell belong to the first access network device, the first access network device may obtain the range information of the first PCI and the range information of the second PCI locally.
  • the range information of the first PCI and the range information of the second PCI may both be determined by the first access network device itself, or may be sent after the OAM of the first access network device is determined. For the first access network device.
  • Case 3 In the case where both the first cell and the second cell belong to the second access network device, the first access network device may obtain the range information of the first PCI and the range information of the second PCI from the second access network device .
  • the range information of the first PCI and the range information of the second PCI may be determined by the second access network device itself, or may be sent to the second access network device after the OAM of the second access network device is determined.
  • the second access network equipment may be used to determine the range information of the first PCI and the range information of the second PCI.
  • the first access network device may obtain the range information of the first PCI from the second access network device , And obtain the range information of the second PCI from the third access network device, where both the second access network device and the third access network device are managed by the first access network device.
  • the range information of the first PCI may be determined by the second access network device itself, or may be sent to the second access network device after the OAM of the second access network device is determined.
  • the range information of the second PCI may also be determined by the third access network device itself, or may be sent to the third access network device after the OAM of the third access network device is determined.
  • the first access network device may be a CU, and the second access network device may be a DU.
  • an embodiment of the present application provides a communication device, which has the function of implementing the first access network device and/or the second access network device in the foregoing embodiment.
  • This function can be realized by hardware, or by hardware executing corresponding software.
  • the hardware or software includes one or more units or modules corresponding to the above-mentioned functions.
  • the communication device includes: a processor configured to support the communication device to perform corresponding functions of the access network device in the communication method shown above.
  • the communication device may also include a memory, and the storage may be coupled with the processor, which stores program instructions and data necessary for the communication device.
  • the communication device further includes a transceiver, which is used to support communication between the communication device and network elements such as relay equipment and access network equipment.
  • the transceiver can be an independent receiver, an independent transmitter, a transceiver with integrated transceiver functions, or an interface circuit.
  • the communication device may be an access network device, or a component that can be used in an access network device, such as a chip or a chip system or a circuit.
  • an embodiment of the present application provides a communication device, which is used to implement any one of the foregoing first aspect or the first aspect, or is used to implement any one of the foregoing second or second aspects , Or used to implement the third aspect or any one of the methods in the third aspect, including corresponding functional modules, respectively used to implement the steps in the above methods.
  • the function can be realized by hardware, or by hardware executing corresponding software.
  • the hardware or software includes one or more modules corresponding to the above-mentioned functions.
  • the structure of the communication device includes a processing unit and a transceiving unit, and these units can perform corresponding functions in the foregoing method examples.
  • a processing unit and a transceiving unit can perform corresponding functions in the foregoing method examples.
  • an embodiment of the present application provides a communication system, which includes a first access network device and a second access network device.
  • the first access network device may be used to execute any one of the above-mentioned first aspect or the first aspect
  • the second access network device may be used to execute any one of the above-mentioned second aspect or the second aspect Method, or used to implement the third aspect or any one of the third aspects.
  • an embodiment of the present application provides a computer-readable storage medium.
  • the computer-readable storage medium stores instructions, which when run on a computer, cause the computer to execute the first aspect or any possible implementation of the first aspect
  • the embodiments of the present application provide a computer program product containing instructions that, when run on a computer, cause the computer to execute the method in the first aspect or any possible implementation of the first aspect, or cause the computer to execute The method in any possible implementation manner of the second aspect or the second aspect, or used to implement the third aspect or any one of the methods in the third aspect.
  • Figure 1 is a schematic diagram of a communication system architecture provided by this application.
  • Figure 1a is a schematic diagram of an NR SA networking architecture provided by this application.
  • Figure 1b is a schematic diagram of another NR SA networking architecture provided by this application.
  • Figure 1c is a schematic diagram of an EN-DC architecture provided by this application.
  • Figure 1d is a schematic diagram of an MR-DC architecture provided by this application.
  • Figure 1e is a schematic diagram of an NR CU-DU architecture provided by this application.
  • Figure 1f is a schematic diagram of another MR-DC architecture provided by this application.
  • FIG. 2 is a schematic diagram of a first SSB and a second SSB directly adjacent to each other provided by this application;
  • Figure 2a is a schematic diagram of a first SSB and a second SSB indirectly adjacent to each other provided by this application;
  • FIG. 3 is a schematic flow chart of a communication method provided by this application.
  • FIG. 4 is a schematic flowchart of another communication method provided by this application.
  • Fig. 5 is a schematic flow diagram of another communication method provided by this application.
  • FIG. 6 is a schematic flowchart of another communication method provided by this application.
  • FIG. 7 is a schematic flowchart of another communication method provided by this application.
  • FIG. 8 is a schematic flowchart of another communication method provided by this application.
  • FIG. 9 is a schematic structural diagram of a communication device provided by this application.
  • FIG. 10 is a schematic structural diagram of a communication device provided by this application.
  • At least one (item) refers to one or more, and “multiple” refers to two or more.
  • “And/or” is used to describe the association relationship of associated objects, indicating that there can be three types of relationships, for example, “A and/or B” can mean: only A, only B, and both A and B , Where A and B can be singular or plural.
  • the character “/” generally indicates that the associated objects are in an “or” relationship.
  • the following at least one item (a)” or similar expressions refers to any combination of these items, including any combination of a single item (a) or plural items (a).
  • At least one (a) of a, b or c can mean: a, b, c, "a and b", “a and c", “b and c", or "a and b and c" ", where a, b, and c can be single or multiple.
  • Fig. 1 exemplarily shows a schematic diagram of a communication system architecture provided by the present application.
  • the communication system may include access network equipment.
  • it may also include a centralized management node and terminal equipment.
  • the centralized management node may be an OAM device, which can be used to manage access network equipment.
  • OAM device which can be used to manage access network equipment.
  • FIG. 1 takes the communication system including the access network device 101, the access network device 102, the OAM 103, the terminal device 104, and the terminal device 105 as an example.
  • the terminal device 104 accesses the access network device 101
  • the terminal device 105 accesses the access network device 102.
  • the access network device 101 and the access network device 102 may each include at least one cell, and one cell may include One or more SSBs, different SSBs can correspond to the same PCI, or can correspond to different PCIs.
  • the access network device 101 and the access network device 102 can exchange information of their respective cells and/or SSB of the cells through interface messages.
  • the communication system in this application can be the universal mobile telecommunications system (UMTS), or the global system for mobile communication (GSM)/enhanced data rate for GSM evolution , EDGE) system, or a long term evolution (LTE) wireless communication system, or a fifth generation (5G) mobile communication system such as the NR system, or other communication systems, such as public land mobile networks (Public land mobile network, PLMN) system, or other communication systems that may appear in the future, are not limited by this application.
  • UMTS universal mobile telecommunications system
  • GSM global system for mobile communication
  • EDGE global system for mobile communication
  • LTE long term evolution
  • 5G fifth generation
  • NR public land mobile networks
  • PLMN public land mobile network
  • Access network equipment also known as wireless access network equipment, is used to connect terminal equipment to equipment in a wireless network. It can be the access network equipment in various communication systems, such as the base station (node B) in UMTS, the macro base station eNB in the LTE wireless communication system, the gNB in the 5G mobile communication system, and the transmission reception point.
  • the TRP and other base station equipment, the baseband processing unit pool (building base band unit pool, BBU pool) in the C-RAN network, or the radio network controller (RNC), network equipment controller (base station) controller, BSC), network equipment transceiver station (base transceiver station, BTS), home network equipment (for example, home evolved NodeB, or Home Node B, HNB), or CU or DU in a distributed base station scenario, among which,
  • the CU supports at least one of PDCP protocol stack functions, RRC protocol stack functions, and SDAP protocol stack functions, or the CU may support at least one of PDCP protocol stack functions, RRC protocol stack functions, and SDAP protocol stack functions
  • the function of the protocol stack supported by the CU may change, which is not limited by this application.
  • DU supports at least one of RLC protocol stack functions, MAC protocol stack functions, and PHY protocol stack functions, or DU supports at least one of RLC protocol stack functions, MAC protocol stack functions, and PHY protocol stack functions
  • DU supports at least one of RLC protocol stack functions, MAC protocol stack functions, and PHY protocol stack functions
  • the functions of the protocol stack supported by the DU may change, which is not limited by this application.
  • the CU when the CU is connected to the 5GC, the CU can support the protocol stack function of PDCP, the protocol stack function of RRC, and the protocol stack function of SDAP.
  • the CU When the CU is connected to an evolved packet core network (evolved packet core, EPC), it supports the PDCP protocol stack function and the RRC protocol stack function.
  • EPC evolved packet core network
  • the CU and DU may be two physically or logically separated modules in the overall access network device, or may be two completely independent logical network elements.
  • the terminal device may also be called a terminal or user equipment (UE). It can be a handheld device with a wireless connection function, a vehicle-mounted device, a roadside infrastructure with a communication function, etc.
  • UE user equipment
  • It can be a handheld device with a wireless connection function, a vehicle-mounted device, a roadside infrastructure with a communication function, etc.
  • mobile phones tablet computers, notebook computers, PDAs, mobile internet devices (MID), wearable devices, drone devices, etc., among which wearable devices include, for example, smart watches, smart bracelets, and smartphones. Stepper etc.
  • this application Based on the communication system architecture shown in FIG. 1, this application provides the following three possible scenarios.
  • Scenario 1 NR standalone (SA) networking architecture.
  • FIG. 1a a schematic diagram of an NR SA networking architecture provided for this application.
  • gNB101a and gNB102a can be connected to the 5G core network (5G corenetwork, 5GC) through the NG interface, respectively, and the Xn interface (also called Xn-control plane, Xn-C) can be used between gNB101a and gNB102a. Interface) connection.
  • 5G corenetwork 5G corenetwork
  • Xn-C also called Xn-control plane
  • the gNB101a may be the access network device 101 in FIG. 1
  • the gNB102a may be the access network device 102 in FIG.
  • FIG. 1b a schematic diagram of another NR SA networking architecture provided for this application.
  • evolved NodeB (evolved NodeB, eNB) 101b and LTE eNB102b can also be connected to the 5G core network through an NG interface, and LTE eNB101b and LTE eNB102b can also be connected through an X2-C interface.
  • the LTE eNB 101b may be the access network device 101 in FIG. 1 and the LTE eNB 102b may be the access network device 102 in FIG. 1.
  • Scenario 2 Multi-link data transmission architecture (also called master-slave node architecture).
  • Network architecture 1 E-UTRA-NR dual connectivity (EN-DC) network architecture of evolved universal terrestrial radio access network and NR.
  • EN-DC E-UTRA-NR dual connectivity
  • the primary node in this architecture may be LTE eNB101c, and the secondary node may be NR gNB102c, where LTE eNB101c may also be called an anchor base station.
  • the LTE eNB101c can be connected to the MME or service gateway (SGW) in the 4G core network through the S1-mobility management entity (S1-MME) interface.
  • SGW S1-mobility management entity
  • the LTE eNB101c and NR gNB102c can be connected to the MME or service gateway (SGW) in the 4G core network through the X2- C interface connection.
  • the LTE eNB 101c may be the access network device 101 in FIG. 1 above
  • the NR gNB 102c may be the access network device 102 in FIG. 1 above.
  • Network architecture two, multi-radio dual connectivity (MR-DC) network architecture.
  • the second network architecture can be divided into the following two possible scenarios.
  • EPC also called EN-DC architecture
  • the core network connected by the primary node and the secondary node is 5GC.
  • This situation 2 can be divided into the following two situations (ie, situation 2.1 and situation 2.2).
  • the primary node is NR gNB101d
  • the secondary node is ng-eNB102d.
  • a schematic diagram of an MR-DC architecture provided in this application.
  • the primary node is NR gNB101d
  • the secondary node is ng-eNB102d.
  • NR gNB101d can also be called an anchor base station.
  • NR gNB101d is connected to the 5G core network mobility management function (core access and mobility management function, AMF) network element or user plane function (UPF) network element through the NG-C interface, which is between NR gNB101d and ng-eNB102d It can be connected through the Xn-C interface.
  • AMF core access and mobility management function
  • UPF user plane function
  • the primary node is ng-eNB101f
  • the secondary node is NR gNB102f.
  • the primary node is ng-eNB101f
  • the secondary node is NR gNB102f
  • ng-eNB101f may also be called an anchor base station.
  • the ng-eNB101f is connected to the AMF network element of the 5G core network through the NG-C interface, and the NR gNB102f and the ng-eNB101f can be connected through the Xn-C interface.
  • the CU in this architecture corresponds to at least one DU, and the architecture may be the CU-DU architecture of LTE or the CU-DU architecture of NR.
  • FIG. 1e a schematic diagram of the CU-DU architecture of NR provided in this application.
  • the architecture includes gNB-1 and gNB-2.
  • gNB-1 includes one CU101e and two DU102e
  • gNB-2 also includes one CU101e and two DU102e as an example.
  • gNB-1 and gNB-2 can be the same GNB.
  • CU101e in gNB-1 and CU101e in gNB-2 can be connected via Xn-C interface, and between CU101e and DU102e in gNB-1, and between CU101e in gNB-2 and two DU102e via F1 Interface connection.
  • Case 1 CU101e in gNB-1 may be the access network device 101 in FIG. 1 described above, and DU102e in gNB-1 may be the access network device 102 in FIG. 1 described above.
  • Case 2 CU101e in gNB-1 may be the access network device 101 in FIG. 1, and DU102e in gNB-2 may be the access network device 102 in FIG. 1.
  • Case 3 CU101e in gNB-1 may be the access network device 101 in FIG. 1 above, and CU101e in gNB-2 may be the access network device 102 in FIG. 1 above.
  • each cell may correspond to one PCI.
  • one small area corresponds to one or more SSBs.
  • the PCI of the cell is the PCI corresponding to the SSB under the cell. It can also be understood that the PCI corresponding to the SSB is the PCI of the cell to which the SSB belongs.
  • one SSB corresponds to one PCI
  • the PCI of the cell is the PCI corresponding to one SSB of the multiple SSBs.
  • one SSB can also be considered as a virtual cell, that is, one virtual cell corresponds to one PCI.
  • one SSB corresponds to one frequency point.
  • multiple SSBs may be transmitted, and the PCIs of the SSBs transmitted at different frequency locations may not be unique.
  • SSBs at different frequency locations may have different PCIs.
  • the SSB is associated with the remaining minimum system information (RMSI)
  • the SSB can correspond to an independent cell, with a unique NR cell global identifier (NCGI), and an SSB with a unique NCGI can be Called CD-SSB.
  • NGI NR cell global identifier
  • a cell when a cell can correspond to multiple SSBs, it can be classified as CD-SBB or non CD-SSB according to whether the SSB has a corresponding NCGI.
  • the corresponding NCGI can be called CD-SBB.
  • the SSB corresponding to NCGI can be called a non-CD-SSB, and a cell can include one CD-SBB and at least one non-CD-SSB.
  • CD-SBB or non CD-SSB is also called the type of SSB.
  • different access network devices are indicated as a first access network device, a second access network device, and a third access network device.
  • the first access network device may be a CU
  • the second access network device and the third access network device are different DUs managed by the CU.
  • the first access network device may be the master node
  • the second access network device/third access network device may be the auxiliary node.
  • the cells where PCI conflicts are called the first cell and the second cell, and any SSB under the first cell is called the first SSB, and the PCI corresponding to the first SSB is called First PCI.
  • Any SSB in the second cell is called the second SSB, and the second SSB corresponds to the PCI and is called the second PCI.
  • the access network devices corresponding to the first cell and the second cell are different.
  • the first cell belongs to the second access network device
  • the second cell belongs to the third access network device.
  • the first cell belongs to the first access network device
  • the second cell belongs to the second access network device/the third access network device.
  • the conflict between the first PCI of the first cell and the second PCI of the second cell may be defined as follows:
  • the first cell and the second cell are adjacent, the frequency corresponding to the first cell and the frequency corresponding to the second cell are the same, and the PCI of the first cell and the PCI of the second cell are the same.
  • the first cell and the second cell are adjacent, including the first cell and the second cell directly adjacent; or, the first cell and the second cell are directly adjacent to the third cell respectively, and the first cell and the second cell Not directly adjacent, in this case, the first cell and the second cell are indirectly adjacent.
  • the conflict between the first PCI corresponding to the first SSB and the second PCI corresponding to the second SSB can be performed as follows definition:
  • Possible definition 1 The first SSB and the second SSB are adjacent, the frequency corresponding to the first SSB and the frequency corresponding to the second SSB are the same, and the first PCI and the second PCI are the same.
  • the first SSB and the second SSB are adjacent to each other including the first SSB and the second SSB are directly adjacent; alternatively, the first SSB and the second SSB are directly adjacent to the third SSB, and the first SSB and the second SSB are directly adjacent to each other.
  • the SSBs are not directly adjacent.
  • the first SSB and the second SSB are also called indirectly adjacent.
  • direct neighboring includes geographic neighboring and/or overlap of signal coverage areas. As shown in FIG. 2, a schematic diagram of a first SSB and a second SSB directly adjacent to each other is provided in this application.
  • this application provides a schematic diagram of the first SSB and the second SSB indirectly adjacent to each other, wherein the first SSB is directly adjacent to the third SSB, the second SSB is directly adjacent to the third SSB, And the first SSB and the second SSB are not directly adjacent.
  • the first SSB is adjacent to the second SSB and the frequency and/or measurement timing configuration (MTC) and/or subcarrier spacing (SCS) corresponding to the first SSB and/or Or the time domain (SSB occurrence) and the frequency corresponding to the second SSB and/or MTC and/or SCS and/or SSB are the same respectively, and the first PCI corresponding to the first SSB is the same as the second PCI corresponding to the second SSB .
  • MTC measurement timing configuration
  • SCS subcarrier spacing
  • the frequency point and/or MTC and/or SCS and/or SSB occurrence corresponding to the first SSB are the same as the frequency point and/or MTC and/or SCS and/or SSB occurrence corresponding to the second SSB respectively, which can specifically refer to:
  • the frequency point corresponding to the first SSB is the same as the frequency point corresponding to the second SSB
  • the MTC corresponding to the first SSB is the same as the MTC corresponding to the second SSB
  • the SCS corresponding to the first SSB is the same as the second SSB
  • the corresponding SCS is the same, and/or, the SSB occurrence corresponding to the first SSB is the same as the SSB occurrence corresponding to the second SSB.
  • the frequency point and/or MTC and/or SCS and/or SSB corresponding to the first SSB may represent the following possible combinations: the frequency point corresponding to the first SSB, the MTC corresponding to the first SSB, and the frequency corresponding to the first SSB.
  • PCI conflicts of directly adjacent SSBs are called PCI collisions, and the PCI conflicts of indirectly adjacent SSBs can also be called PCI confusions.
  • the specific names are not limited in this application.
  • the direct neighbor can be understood as the cell that can be measured by the terminal device are all directly neighbors
  • the indirect neighbor can be understood as the cell measured by the terminal device and the neighboring cell of the serving cell are indirectly adjacent.
  • This application provides the following two ways to determine that the first SSB and the second SSB are adjacent (including direct adjacent and indirect adjacent).
  • Implementation manner 1 If the cell to which the first SSB belongs is adjacent to the cell to which the second SSB belongs, it is determined that the first SSB is adjacent to the second SSB.
  • the information exchanged between the first access network device and the second access network device may include the serving cell and the neighboring cells of the serving cell.
  • the serving cell is cell 1 of the second access network device
  • the neighboring cells of the serving cell are cell 2 and cell 3.
  • the first access network device After the first access network device receives the information element sent by the second access network device, it can determine
  • the SSB included in the cell under the first access network device is directly adjacent to the SSB included in cell 1, and the SSB included in the cell under the first access network device is indirectly related to the SSB included in cell 2 and the SSB included in cell 3. adjacent.
  • the SSB in this example may be a CD-SSB or a non-CD-SSB.
  • the access network device can define a cell, which is used to indicate the SSB adjacent to the serving SSB (such as the second SSB), and the first access network device receives the information sent by the second access network device
  • the information includes the defined information element, and the SSB directly adjacent to the serving SSB (such as the second SSB) and the SSB indirectly adjacent to the serving SSB can be respectively determined according to the defined information element.
  • the serving SSB in this example may be a CD-SSB or a non-CD-SSB, and the SSB adjacent to the serving SSB may also be a CD-SSB or a non-CD-SSB.
  • the conflict between the first PCI and the second PCI can be classified into the following three types of situation definitions. Scenario A, PCI conflict between CD-SBB.
  • the first SSB is the first CD-SSB
  • the second SSB is the second CD-SSB.
  • the direct or indirect adjacent between the first CD-SSB and the second CD-SBB it can be divided into situations A-1 and situation A-2.
  • the first CD-SSB and the second CD-SSB are directly adjacent, and the frequency points and/or MTC and/or SCS and/or SSB corresponding to the first CD-SSB correspond to the second CD-SSB respectively.
  • the frequency and/or the MTC and/or SCS and/or SSB occurrence of are respectively the same, and the first PCI corresponding to the first CD-SSB is the same as the second PCI corresponding to the second CD-SSB.
  • the first CD-SSB and the second CD-SSB are indirectly adjacent, and the frequency point corresponding to the first CD-SSB and/or MTC and/or SCS and/or SSB occasion corresponds to the second CD-SSB
  • the frequency and/or MTC and/or SCS and/or SSB occasion are respectively the same, and the first PCI corresponding to the first CD-SSB is the same as the second PCI corresponding to the second CD-SSB.
  • the first SSB is the first non-CD-SSB
  • the second SSB is the second non-CD-SSB. According to whether the first non-CD-SSB and the second non-CD-SBB are directly adjacent or indirectly adjacent, It can be divided into case B-1 and case B-2.
  • the first non CD-SSB and the second non CD-SSB are directly adjacent, and the frequency points corresponding to the first non CD-SSB and/or MTC and/or SCS and/or SSB occasion and the second non CD -The frequency points and/or MTC and/or SCS and/or SSB corresponding to the SSB are the same respectively, and the first PCI corresponding to the first non-CD-SSB is the same as the second PCI corresponding to the second non-CD-SSB.
  • the first non CD-SSB and the second non CD-SSB are indirectly adjacent, and the frequency points corresponding to the first non CD-SSB and/or MTC and/or SCS and/or SSB occasion and the second non CD -The frequency points and/or MTC and/or SCS and/or SSB corresponding to the SSB are the same respectively, and the first PCI corresponding to the first non-CD-SSB is the same as the second PCI corresponding to the second non-CD-SSB.
  • the first SSB is the first non-CD-SSB
  • the second SSB is the second CD-SSB.
  • Cases C-1 and C-2 it can be divided Cases C-1 and C-2; or, the first SSB is the first CD-SSB, and the second SSB is the second non-CD-SBB.
  • Adjacent or indirectly adjacent can also be divided into case C-1 and case C-2.
  • the first CD-SSB and the second non CD-SSB are directly adjacent, and the frequency point corresponding to the first CD-SSB and/or MTC and/or SCS and/or SSB occasion and the second non CD-SSB
  • the corresponding frequency points and/or MTC and/or SCS and/or SSB occasions are respectively the same, and the first PCI corresponding to the first CD-SSB is the same as the second PCI corresponding to the second non-CD-SSB;
  • the first non-CD-SSB and the second CD-SSB are directly adjacent, and the frequency point and/or MTC and/or SCS and/or SSB corresponding to the first non-CD-SSB correspond to the second CD-SSB
  • the frequency point and/or MTC and/or SCS and/or SSB occasion are respectively the same, and the first PCI corresponding to the first non-CD-SSB is the same as the second PCI corresponding to the second CD-SSB.
  • the first CD-SSB is indirectly adjacent to the second non-CD-SSB, and the frequency point corresponding to the first CD-SSB and/or MTC and/or SCS and/or SSB occasion and the second non-CD-SSB
  • the corresponding frequency points and/or MTC and/or SCS and/or SSB occasions are respectively the same
  • the first PCI corresponding to the first CD-SSB is the same as the second PCI corresponding to the second non-CD-SSB;
  • the first non-CD-SSB and the second CD-SSB are indirectly adjacent, and the frequency point and/or MTC and/or SCS and/or SSB corresponding to the first non-CD-SSB correspond to the second CD-SSB
  • the frequency point and/or MTC and/or SCS and/or SSB occasion are respectively the same, and the first PCI corresponding to the first non-CD-SSB is the same as the second PCI corresponding to the second CD-SSB.
  • the terminal may detect one of the first SBB and the second SSB, and the terminal accesses the detected SSB, but may be greatly interfered by the other SSB, or the terminal may not be able to access Any one of the two interfering first SBB and second SSB causes call drop.
  • the first access network device may be the access network device 101 in FIG. 1, and the second access network device may be the access network device 102 in FIG. .
  • the first access network device may be the gNB101a in FIG. 1a
  • the second access network device may be the gNB102a in FIG. 1a.
  • the first access network device may be the LTE eNB 101b in FIG. 1b
  • the second access network device may be the LTE eNB 102b in FIG. 1b.
  • the first access network device can be the master node, and the second access network device can be the auxiliary node.
  • the first access network device may be a CU, and the second access network device may be a DU, and the CU and the DU may belong to the same base station or different base stations.
  • FIG. 3 a schematic flow diagram of a communication method provided by this application. The method includes the following steps:
  • Step 301 The first access network device determines that the first PCI of the first cell and the second PCI of the second cell conflict.
  • the first PCI is for the first cell
  • the second PCI is for the second cell
  • the first PCI corresponds to the first SSB
  • the second PCI corresponds to the second SSB.
  • the first access network device can be based on the conflicts between the PCIs mentioned above. It is determined that the first PCI conflicts with the second PCI, and will not be repeated here.
  • the relationship between the first cell and the second cell and the access network device can be divided into the following four possible scenarios.
  • Case 1 The first cell belongs to the first access network device, and the second cell belongs to the second access network device.
  • the first access network device is a primary node
  • the first cell is a cell managed by the primary node
  • the second access network device is a secondary node
  • the second cell is a cell managed by the secondary node.
  • the first access network device and the second access network device are different nodes (such as base stations, such as gNB101a and gNB101b as shown in FIG. 1a), and the first cell and the second cell are managed by different nodes, respectively
  • the different nodes may all be primary nodes or all secondary nodes.
  • the first access network device and the second access network device are different centralized units (central units, CU), and the first cell and the second cell are respectively managed by different CUs.
  • Case 2 Both the first cell and the second cell belong to the first access network device.
  • the first access network device is node 1
  • the second access network device is node 2
  • both the first cell and the second cell are cells under node 1, where node 1 and node 2 may both be base stations.
  • the first access network device is a master node
  • the second access network device is a secondary node
  • the first cell and the second cell are different cells managed by the master node.
  • Case 3 Both the first cell and the second cell belong to the second access network device.
  • the first access network device is node 1, and the second access network device is node 2, and both the first cell and the second cell are cells under node 2, where node 1 and node 2 may both be base stations.
  • the first access network device is a CU
  • the second access network device is a distributed unit (DU)
  • the first cell and the second cell are different cells managed by the DU.
  • the first access network device is a master node
  • the second access network device is a secondary node
  • the first cell and the second cell are different cells managed by the secondary node.
  • Case 4 The first cell belongs to the second access network device, and the second cell belongs to the third access network device, where both the second access network device and the third access network device are managed by the first access network device .
  • the first access network device is a CU
  • the second access network device and the third access network device are different DUs managed by the CU
  • the first cell and the second subdivision are under different DU management.
  • the first access network device can obtain the first PCI and the second PCI.
  • the first access network device may obtain the first PCI locally, and the first access network device obtains the second PCI from the second access network device.
  • the first access network device can obtain the first PCI and the second PCI locally.
  • the first access network device may obtain the first PCI and the second PCI from the second access network device.
  • the first access network device may obtain the first PCI from the second access network device, and obtain the second PCI from the third access network device.
  • the second PCI corresponding to the second SSB may be carried in the SSB information (referred to as the second SSB information for short) corresponding to the second cell obtained by the first access network device.
  • the SSB information corresponding to the second cell may also include the frequency corresponding to the second SSB, the type of the second SSB, the MTC corresponding to the second SSB, the SCS corresponding to the second SSB, and the time domain corresponding to the second SSB.
  • the frequency corresponding to the second SSB the type of the second SSB
  • the MTC corresponding to the second SSB the MTC corresponding to the second SSB
  • the SCS corresponding to the second SSB the time domain corresponding to the second SSB.
  • the SSB information corresponding to the second cell includes the second PCI corresponding to the second SSB.
  • the SSB information corresponding to the second cell includes the second PCI corresponding to the second SSB, and one or more of the following information: the frequency corresponding to the second SSB, the second SSB
  • the type, the MTC corresponding to the second SSB, the SCS corresponding to the second SSB, and the time domain corresponding to the second SSB are not limited in this application.
  • the SSB information corresponding to the second cell includes the second PCI corresponding to the second SSB and the frequency point corresponding to the second SSB.
  • the SSB information corresponding to the second cell includes the second PCI corresponding to the second SSB, the frequency corresponding to the second SSB, and the type of the second SSB, where the type of the second SSB is CD-SBB or nonCD-SSB .
  • the SSB information corresponding to the second cell may include the second PCI corresponding to the second SSB, the frequency corresponding to the second SSB, the type of the second SSB, and the MTC corresponding to the second SSB.
  • the SSB information corresponding to the second cell may include the second PCI corresponding to the second SSB, the frequency corresponding to the second SSB, the type of the second SSB, and the SCS corresponding to the second SSB.
  • the SSB information corresponding to the second cell may include the second PCI corresponding to the second SSB, the frequency corresponding to the second SSB, the type of the second SSB, the SCS corresponding to the second SSB, and the time domain corresponding to the second SSB. Or other possible combinations, not listed here.
  • Step 302 The first access network device sends instruction information to the second access network device and/or OAM, where the instruction information is used to indicate that the first PCI and the second PCI conflict.
  • the second access network device and/or OAM receives the indication information.
  • the indication information includes the second PCI, the frequency corresponding to the second SSB, the type of the second SSB, the MTC corresponding to the second SSB, the SCS corresponding to the second SSB, and the time corresponding to the second SSB.
  • the domain and NCGI corresponding to the second SSB One or more of the domain and NCGI corresponding to the second SSB.
  • the indication information includes the second PCI; or, the indication information may include the type of the second PCI and the second SSB; or, the indication information may include the type of the second SSB and the frequency point corresponding to the second SSB; or, The indication information may include the frequency points corresponding to the second PCI and the second SSB; or, the indication information may include the second PCI, the type of the second SSB, and the frequency points corresponding to the second SSB; or, the indication information may include the second PCI, The type of the second SSB and the MTC corresponding to the second SSB; or, the indication information may include the second PCI, the type of the second SSB, and the SCS corresponding to the second SSB; or, the indication information may include the information of the second PCI and the second SSB.
  • the type and the time domain corresponding to the second SSB, or other possible combinations, are not listed here.
  • the indication information may also include NCGI.
  • the indication information may be an index, which may indicate that the first PCI and the second PCI conflict; or, the indication information may also be an indication character, which may indicate the first PCI and the second PCI There is a conflict.
  • the specific form of the instruction information may also be a form, which is not limited in this application.
  • gNB101a may send instructions to gNB102a through the Xn-C interface.
  • gNB102a receives the instruction information from gNB101a through the Xn-C interface.
  • the LTE eNB101b may send indication information to the LTE eNB102b through the X2-C interface.
  • the LTE eNB 102b receives the indication information from the LTE eNB 101b through the X2-C interface.
  • the LTE eNB101c is the first access network device
  • the NR gNB102c is the second access network device
  • the LTE eNB101c can send indication information to the NRgNB102c through the X2-C interface
  • the NR gNB102c can receive the indication information from the LTE eNB101c through the X2-C interface.
  • NR gNB101d is the first access network device
  • ng-eNB102d is the second access network device
  • NR gNB101d can send instructions to the ng-eNB102d through the Xn-C interface
  • the ng-eNB 102d can receive the indication information from the NR gNB101d through the Xn-C interface.
  • ng-eNB101f is the first access network device
  • NR gNB102f is the second access network device
  • ng-eNB101f can send instructions to NR gNB102f through the Xn-C interface
  • the NR gNB102f can receive the indication information from the ng-eNB101f through the Xn-C interface.
  • the following three possible implementation manners may be included, and the following three possible implementation manners are all optional steps. It can also be understood that, in combination with the foregoing scenario 3, it is an optional step that the first access network device sends the instruction information to the second access network device and/or OAM.
  • the CU is the first access network device
  • the DU is the second access network device.
  • CU101e in gNB-1 can send instruction information to DU102e in gNB-1 through the F1 interface.
  • DU102e in gNB-1 can receive indication information from CU101e in gNB-1 through the F1 interface.
  • CU101e in gNB-1 can first send instructions to CU101e in gNB-2 through the Xn-C interface, and then CU101e in gNB-2 to DU102e in gNB-2 through the F1 interface Send instructions.
  • DU102e in gNB-2 receives the indication information from CU101e in gNB-1.
  • the CU is the second access network device
  • the DU is the first access network device.
  • the DU can send indication information to the OAM or the CU.
  • the OAM or CU receives the indication information from the DU.
  • the first access network device and the second access network device are both CUs.
  • CU101e in gNB-1 can pass Xn-
  • the C interface sends instruction information to the CU101e in the gNB-2, and the implementation is the same as the process of the Ng-eNB102d and the NR gNB101d in the second scenario.
  • the indication information can be sent through an existing message on the X2-C or Xn-C or F1 interface, or it can also be sent through a newly defined message, which is not limited in this application.
  • the first access network device can determine that the first PCI and the second PCI conflict according to the first PCI corresponding to the first cell and the second PCI corresponding to the second cell, where, The first PCI corresponds to the first SSB, and the second PCI corresponds to the second SSB.
  • the detection of PCI conflicts corresponding to the SSB in the NR system can be realized, which helps to eliminate or reduce the PCI conflicts in the NR network, thereby increasing the success rate of terminal handover, and thereby reducing the call drop rate of the terminal.
  • the communication method provided in this application is suitable for multiple networking scenarios and has high flexibility.
  • the first cell belongs to the first access network device and the second cell belongs to the second access network device.
  • the first access network device can pass The interface with the second access network device obtains the SSB information corresponding to the second cell; or, the first access network device may obtain the SSB information corresponding to the second cell through the air interface with the terminal device.
  • the SSB information corresponding to the second cell may include the PCI corresponding to the second SSB, the frequency corresponding to the second SSB, the MTC corresponding to the second SSBSB, the SCS corresponding to the second SSB, and the type corresponding to the second SSB (such as CD-SSB, non CD-SSB), one or more of the time domain corresponding to the second SSB.
  • the second access network device may send the SSB information corresponding to the second cell to the first access network device, and the second access network device may directly send the SSB corresponding to the second cell to the first access network device.
  • the information may also be that the second access network device sends the SSB information corresponding to the second cell to the relay device, and the relay device transparently transmits the SSB information corresponding to the second cell to the first access network device.
  • the first access network device can receive the SSB information corresponding to the second cell sent from the second access network device.
  • the first access network device may determine whether the first PCI and the second PCI conflict based on the received SSB information corresponding to the second cell and the SSB information corresponding to the first cell. It is understandable that The above step 301 is performed after obtaining the SSB information corresponding to the second cell.
  • the second access network device may send the SSB information corresponding to the second cell to the first access network device through the Xn-C interface.
  • the first access network device can receive the SSB information corresponding to the second cell through the Xn-C interface.
  • the second access network device can send the SSB information corresponding to the second cell to the first access network device through the X2-C interface.
  • the first access network device can receive the SSB information corresponding to the second cell through the X2-C interface.
  • the second access network device may send the SSB information corresponding to the second cell to the first access network device through the Xn-C interface.
  • the first access network device can receive the SSB information corresponding to the second cell through the Xn-C interface.
  • DU102e in gNB-1 can send SSB information to CU101e in gNB-1 through an F1 interface.
  • CU101e in gNB-1 can receive SSB information corresponding to DU102e in gNB-1 through the F1 interface.
  • the DU102e in the gNB-2 can first send the SSB information corresponding to the DU102e in the gNB-2 to the CU101e in the gNB-2 through the F1 interface, and then the CU101e in the gNB-2 through the Xn-C The interface sends the received SSB information corresponding to DU102e in gNB-2 to CU101e in gNB-1.
  • CU101e in gNB-1 receives SSB information corresponding to DU102e in gNB-2.
  • the first access network device is CU1
  • the second access network device is DU1
  • DU1 is managed by CU1. If the first cell is cell1 under DU1, suppose CU1 determines that the direct neighbors of cell1 are cell2, the indirect neighbors are cell3 and cell4, and the indirect neighbors cell3 and cell4 are the direct neighbors of cell2. At this time, CU1 will take cell2's PCI and corresponding SSB information, cell3 PCI and corresponding SSB information, cell4 PCI and corresponding SSB information are sent to DU1, DU1 is used to determine whether the PCI of cell1 and the PCI of cell2, the PCI of cell3, and the PCI of cell4 occur conflict.
  • DU1 may know in advance that the immediate neighbor of cell1 is cell2.
  • DU1 sends the identifier of cell2 to CU1 to request the neighbor of cell2, that is, the indirect neighbor of cell1.
  • CU1 returns the PCI of cell2 and the corresponding cell to DU1.
  • the neighboring cells (directly neighboring cells or indirect neighboring cells) of the first cell may be determined by the first access network device.
  • the second access network device may request the first access device to obtain PCI and corresponding SSB information of neighboring cells of the first cell.
  • the first access network device may actively send the PCI and corresponding SSB information of the neighboring cells of the first cell to the second access network device.
  • the CU101e in the gNB-1 can communicate to the gNB-1 through the F1 interface DU102e in gNB-1 sends the SSB information corresponding to CU101e in gNB-1.
  • DU102e in gNB-1 can receive SSB information corresponding to CU101e in gNB-1 through the F1 interface.
  • CU101e in gNB-1 sends SSB information corresponding to CU101e in gNB-1 to CU101e in gNB-2 through the Xn-C interface, and CU101e in gNB-2 sends the SSB information to gNB through the F1 interface.
  • DU102e in -2 sends and receives SSB information corresponding to CU101e in gNB-1.
  • the first access network device and the second access network device are both CUs.
  • the CU101e in the gNB-2 can pass Xn
  • the -C interface sends the SSB information corresponding to the CU101e in the gNB-2 to the CU101e in the gNB-1.
  • This implementation is the same as the process of the Ng-eNB102d and NRgNB101d in the above scenario 2.
  • the first cell and the second cell both belong to the first access network device, and the first access network device can directly obtain the configuration information from the local SSB information corresponding to the first cell and SSB information corresponding to the second cell.
  • the first cell and the second cell both belong to the second access network access device, and the first access network device can access from the second access network.
  • the network equipment obtains the SSB information corresponding to the first cell and the SSB information corresponding to the second cell.
  • the first access network device may obtain the SSB information corresponding to the first cell and the SSB information corresponding to the second cell through the interface between the first access network device and the second access network device; Obtain the SSB information corresponding to the first cell and the SSB information corresponding to the second cell at the air interface between the two.
  • the first cell belongs to the second access network device, and the second cell belongs to the third access network device, wherein the second Both the access network device and the third access network device are managed by the first access network device.
  • DU102e in gNB-2 can be the second access network device
  • DU102e in gNB-1 can be the third access network device
  • the first access network device can be gNB-1 CU101e.
  • DU102e in gNB-2 can first send SSB information corresponding to DU102e in gNB-2 to CU101e in gNB-2 through the F1 interface, and then CU101e in gNB-2 to CU101e in gNB-1 through the Xn-C interface
  • the received SSB information corresponding to DU102e in gNB-2, DU102e in gNB-1 can first send SSB information corresponding to DU102e in gNB-1 to CU101e in gNB-1 through the F1 interface.
  • CU101e in gNB-1 receives SSB information corresponding to DU102e in gNB-2.
  • this application provides the following three implementation methods to resolve the conflict between the first PCI and the second PCI.
  • the three implementation manners can be implemented individually or in combination, which is not limited in this application.
  • Implementation manner 1 The second access network device modifies the second PCI according to the instruction information.
  • FIG. 4 it is a schematic flowchart of another communication method provided by this application. The method includes the following steps.
  • Step 401 The first access network device determines that the first PCI and the second PCI conflict.
  • This step 401 is the same as the step 301 in the embodiment of FIG. 3, and reference may be made to the foregoing description.
  • Step 402 The first access network device sends instruction information to the second access network device.
  • the indication information may be the same as the indication information in step 302 of the embodiment in FIG. 3, and reference may be made to the foregoing description.
  • the interface for the first access network device to send the instruction information to the second access network device may refer to the introduction in the foregoing step 302 in combination with the specific scenario, which will not be repeated here.
  • Step 403 The second access network device modifies the second PCI according to the instruction information.
  • the second access network device determines the second SSB according to the instruction information, and modifies the second PCI corresponding to the second SSB. For example, when CD-SSB and non-CD-SSB correspond to the same PCI, the second access network device can determine whether the PCI corresponding to the CD-SSB needs to be modified according to the type of the second PCI and the second SSB included in the instruction information, or Modify the PCI corresponding to non-CD-SSB. For another example, since the frequency points corresponding to each SSB are different, the second access network device may determine that the PCI corresponding to the second SSB needs to be modified according to the second PCI and the frequency points corresponding to the second SSB included in the instruction information. For another example, the second access network device may also determine that the PCI corresponding to the second SSB needs to be modified according to the frequency point corresponding to the second SSB, the type of the second SSB, and the second PCI included in the instruction information.
  • modifying PCI needs to meet two requirements: First, collision-free, that is, any two adjacent SSBs with the same frequency cannot use the same PCI. Second, there is no confusion (confusion-free), that is, no two SSBs with the same frequency among all adjacent SSBs of the same SSB use the same PCI. For the SSBs under the same access network device, these SSBs can be treated as special directly adjacent SSBs. That is, the PCI of any two or more SSBs under the same access network device also needs to meet the above-mentioned non-confusion and non-confusion. Conflicting requirements.
  • an available PCI set is maintained in the second access network device, and the second access network device may use any PCI in the PCI set.
  • the second access network device tries to modify the second PCI to a PCI available in the PCI set, that is, select an available PCI to replace the second PCI.
  • the access network equipment asks OAM for available PCI, which helps to improve the efficiency of modifying conflicting PCI.
  • Step 404 The second access network device sends the modified second PCI to the first access network device.
  • This step 404 is optional.
  • the first access network device can update the PCI corresponding to the second SSB in time, so that when the terminal is handed over, the appropriate SSB can be selected for the terminal.
  • the second access network device may send the modified PCI corresponding to the second SSB through the interface for receiving the indication information.
  • the modified PCI corresponding to the second SSB may also be a newly defined message, which is not limited in this application.
  • the communication method shown in FIG. 4 may be a possible example of the communication method shown in FIG. 3.
  • Implementation manner 2 OAM modifies the first PCI or the second PCI according to the instruction information.
  • FIG. 5 it is a schematic flowchart of another communication method provided by this application. The method includes the following steps:
  • Step 501 The first access network device determines that the first PCI and the second PCI conflict.
  • This step 501 is the same as step 301 in the embodiment of FIG. 3, and the foregoing description may be referred to.
  • Step 502 The first access network device sends instruction information to the second access network device.
  • the indication information may be the same as the indication information in step 302 of the embodiment in FIG. 3, and reference may be made to the foregoing description. Further, the interface for the first access network device to send the instruction information to the second access network device may refer to the introduction in the foregoing step 302 in combination with the specific scenario, which will not be repeated here.
  • Step 503 The second access network device sends instruction information to OAM.
  • the second access network device sends instruction information to the OAM.
  • the instruction information may also carry the cell identity to which the second SSB belongs and/or the second access The identity of the network device.
  • Step 504 The OAM modifies the second PCI according to the instruction information.
  • the OAM After the OAM receives the instruction information, it reassigns a new PCI to the second SSB, and the OAM allocates a new PCI to the second SSB also needs to meet the two requirements that need to be met for modifying the PCI in step 403.
  • Step 505 The OAM sends the modified PCI to the second access network device.
  • Step 506 The second access network device sends the modified PCI to the first access network device.
  • step 404 is optional.
  • step 404 is optional.
  • details please refer to step 404 above, which will not be repeated here.
  • FIG. 6 a schematic flow diagram of another communication method provided by this application. The method includes the following steps:
  • Step 601 The first access network device determines that the first PCI and the second PCI conflict.
  • This step 601 is the same as the step 301 in the embodiment of FIG. 3, and reference may be made to the foregoing description.
  • Step 602 The first access network device sends instruction information to OAM.
  • the indication information may further carry the cell identity to which the second SSB belongs and/or the second access to which the cell to which the second SSB belongs in the indication information in step 302 of the above embodiment in FIG. 3 The identity of the network device.
  • the indication information may further include SSB information corresponding to the first cell.
  • the SSB information corresponding to the first cell may include: the types of the first PCI and the first SSB; or, the frequency points corresponding to the first PCI and the first SSB; or, the types of the first PCI and the first SSB, and The frequency point corresponding to the first SSB; or, the first PCI, the type of the first SSB, and the MTC corresponding to the first SSB; or, the indication information may include the first PCI, the type of the first SSB, and the SCS corresponding to the first SSB;
  • the SSB information corresponding to the first cell may include the first PCI, the type of the first SSB, and the time domain corresponding to the first SSB.
  • the indication information may also carry the cell identifier to which the first SSB belongs and/or the identifier of the first access network device and/or the NCGI corresponding to the first
  • the indication information may include SSB information corresponding to the first cell and SSB information corresponding to the second cell.
  • the indication information may also include the frequency points corresponding to the first PCI, the first SSB, the frequency points corresponding to the second PCI and the second SSB; or, the indication information may also include the frequency points corresponding to the first PCI and the first SSB.
  • the indication information may also include the first PCI, the frequency point corresponding to the first SSB, the type of the second PCI, the second SSB, and the frequency point corresponding to the second SSB; or , The indication information may also include the first PCI, the type of the first SSB, the second PCI and the second SSB type; or the indication information may also include the first PCI, the type of the first SSB, the second PCI and the second SSB corresponding Or, the indication information may also include the first PCI, the type of the first SSB, the second PCI, the type of the second SSB, and the frequency corresponding to the second SSB; or, the indication information may also include the first PCI, The type of the first SSB, the frequency corresponding to the first SSB, the frequency corresponding to the second PCI and the second SSB; or the indication information may also include the first PCI, the type of the first SSB,
  • Step 603 The OAM modifies the first PCI or the second PCI according to the instruction information.
  • step 604 OAM modifies the second PCI, and then step 604 is performed; if the instruction information is the second possible implementation manner in step 602, then OAM Modify the first PCI, and then go to step 605; if the instruction information is the third possible implementation in step 602, the OAM can modify the first PCI or the second PCI. There is no specific limitation here. If it is modified For the first PCI, then step 604 is also executed, and if the second PCI is modified, step 605 is then executed.
  • Step 604 The OAM sends the modified first PCI and/or the modified second PCI to the first access network device.
  • the first access network device sends the modified second PCI to the second access network device.
  • the OAM directly sends the modified second PCI to the second access network device.
  • Implementation manner 3 The first access network device modifies the first PCI and/or the second PCI.
  • FIG. 7 it is a schematic flowchart of another communication method provided by this application. The method includes the following steps:
  • Step 701 The first access network device determines that the first PCI and the second PCI conflict.
  • This step 701 is the same as step 301 in the embodiment of FIG. 3, and the foregoing description can be referred to.
  • Step 702 The first access network device modifies the first PCI.
  • the first access network device may obtain the range information of the first PCI and/or the range information of the second PCI, which may be based on the range information of the first PCI and/or the range information of the second PCI. Modify the first PCI and/or the second PCI, where the range information of the first PCI is the PCI range available to the first cell, and the range information of the second PCI is the PCI range available to the second cell. In this way, the efficiency of modifying the PCI of the first access network device is improved.
  • the first access network device can modify the first PCI, can also modify the second PCI, or can also modify the first PCI and the second PCI.
  • the first access network device modifies the first PCI, which means that the first access network device modifies the first PCI corresponding to the first SSB to a PCI that does not conflict with the second PCI, which may specifically be: the first access network device
  • the first PCI can be modified according to the range information of the first PCI.
  • the first access network device modifies the second PCI, which means that the first access network device modifies the second PCI to a PCI that does not conflict with the first PCI.
  • the first access network device can be based on the scope of the second PCI. Modify the second PCI.
  • the first access network device may send instruction information to the second access network device, or may also send instruction information to OAM, or may also send instruction information to both the second access network device and the OAM Indication information, or it is also possible to neither send the indication information to the second access network device nor to the OAM, which is not specifically limited in this application.
  • the first access network device may send the modified first PCI to the second access network device, or the first access network device may send the modified second PCI to The second access network device.
  • the sending of the modified first PCI or the modified second PCI can be carried in the instruction information sent by the first access network device to the second access network device, or it can be in a newly defined message. Not limited.
  • the indication information may be used to indicate that the first PCI and the second PCI conflict.
  • the conflicting first PCI and second PCI can be directly indicated. It can also be used to indicate the modified PCI of the first access network device.
  • the modified PCI can be the PCI of the first PCI corresponding to the first SSB, or the PCI of the second PCI corresponding to the second SSB. .
  • the first access network device has resolved the conflict between the first PCI and the second PCI, which is not specifically limited in this application.
  • the conflicting first PCI and second PCI are the PCI conflicts between CD-SBB and non-CD-SSB in the above scenario C
  • the terminal usually accesses the access network equipment based on the CD-SSB synchronization signal during cell selection
  • non-CD-SSB generally exists as a secondary carrier and is generally used for measurement. Therefore, it is preferred to modify the non-CD-SSB pair The impact of terminal access is minimal.
  • FIG. 8 it is a schematic flowchart of another communication method provided by this application. The method includes the following steps:
  • Step 801 The first access network device determines that the first PCI and the second PCI conflict.
  • Step 802 The first access network device obtains range information of the first PCI and/or range information of the second PCI.
  • the range information of the first PCI is the available PCI range of the first cell
  • the range information of the second PCI is the available PCI range of the second cell.
  • the first access network device obtains the range information of the first PCI and/or the range information of the second PCI can be divided into the following four situations.
  • Case 1 When the first cell belongs to the first access network device and the second cell belongs to the second access network device, the first access network device can obtain the range information of the first PCI locally, and the first access The network device may obtain the range information of the second PCI from the second access network device.
  • the range information of the first PCI may be determined by the first access network device itself, or may be sent to the first access network device after the OAM of the first access network device is determined.
  • the range information of the second PCI may also be determined by the second access network device itself, or may be sent to the second access network device after the OAM of the second access network device is determined.
  • Case 2 In the case where both the first cell and the second cell belong to the first access network device, the first access network device may obtain the range information of the first PCI and the range information of the second PCI locally.
  • the range information of the first PCI and the range information of the second PCI may both be determined by the first access network device itself, or may be sent after the OAM of the first access network device is determined. For the first access network device.
  • Case 3 In the case where both the first cell and the second cell belong to the second access network device, the first access network device may obtain the range information of the first PCI and the range information of the second PCI from the second access network device .
  • the range information of the first PCI and the range information of the second PCI may be determined by the second access network device itself, or may be sent to the second access network device after the OAM of the second access network device is determined.
  • the second access network equipment may be used to determine the range information of the first PCI and the range information of the second PCI.
  • the first access network device may obtain the range information of the first PCI from the second access network device , And obtain the range information of the second PCI from the third access network device, where both the second access network device and the third access network device are managed by the first access network device.
  • the range information of the first PCI may be determined by the second access network device itself, or may be sent to the second access network device after the OAM of the second access network device is determined.
  • the range information of the second PCI may also be determined by the third access network device itself, or may be sent to the third access network device after the OAM of the third access network device is determined.
  • each cell under the first access network device may correspond to one PCI range information, and the PCI range information corresponding to each cell may be the same or different.
  • Each cell under the second access network device may also correspond to a PCI range information, and the PCI range information corresponding to each cell may be the same or different.
  • the first access network device may correspond to a piece of PCI range information, and each cell under the first access network device may apply the PCI range information.
  • the second access network device also corresponds to a piece of PCI range information, and each cell under the second access network device applies the PCI range information.
  • step 801 and the foregoing step 802 are in no order, and step 801 may be performed first, or step 802 may be performed first, which is not limited in this application.
  • Step 803 The first access network device may modify the first PCI according to the range information of the first PCI, and may modify the second PCI according to the range information of the second PCI.
  • the first access network device modifies the conflicting PCI according to the PCI range information, which helps to improve the efficiency of the second access network device to modify the PCI.
  • the first access network device may be a CU, and the second access network device may be a DU.
  • FIG. 9 exemplarily shows a schematic structural diagram of a communication device provided by the present application.
  • the communication device 900 includes a processor 901.
  • it may further include a transceiver 902 and a memory 903; wherein the processor 901, the transceiver 902 and the memory 903 are connected to each other through a bus.
  • the communication device 900 may also be the access network device 101 or the access network device 102 in FIG.
  • gNB101a or gNB102a in FIG. 1a or the LTE eNB101b or LTE eNB102b in FIG. 1b. It can be LTE eNB101c or NR gNB102c in Figure 1c, ng-eNB102d or NRgNB101d in Figure 1d, CU101e or DU102e in Figure 1e, or ng-eNB102d in Figure 1f. eNB101f or NR gNB102f.
  • the memory 903 may include a volatile memory (volatile memory), such as a random-access memory (random-access memory, RAM); the memory may also include a non-volatile memory (non-volatile memory), such as a flash memory (flash memory). ), a hard disk drive (HDD) or a solid-state drive (SSD); the storage 903 may also include a combination of the foregoing types of storage.
  • volatile memory such as a random-access memory (random-access memory, RAM)
  • non-volatile memory such as a flash memory (flash memory).
  • flash memory flash memory
  • HDD hard disk drive
  • SSD solid-state drive
  • the transceiver 902 is used for communication between the communication device and other communication devices.
  • the communication device may communicate with a terminal device or an access network device through the transceiver 902.
  • the transceiver 902 may be a communication interface, and the communication interface may implement the function of the X2 interface, the Xn interface, or the F1 interface in the foregoing embodiment.
  • the processor 901 may be a central processing unit (CPU), a network processor (NP), or a combination of a CPU and an NP.
  • the processor 901 may further include a hardware chip.
  • the aforementioned hardware chip may be an application-specific integrated circuit (ASIC), a programmable logic device (PLD) or a combination thereof.
  • ASIC application-specific integrated circuit
  • PLD programmable logic device
  • the above-mentioned PLD may be a complex programmable logic device (CPLD), a field-programmable gate array (FPGA), a generic array logic (GAL) or any combination thereof.
  • the memory 903 may also be used to store program instructions.
  • the processor 901 calls the program instructions stored in the memory 903 to execute one or more steps in the embodiments shown in the above solutions, or optional implementations therein.
  • the communication device 900 realizes the function of the communication device in the foregoing method.
  • the device may be the first access network device in any of the foregoing embodiments, and may also be a component (such as a chip or a circuit) in the first access network device.
  • a component such as a chip or a circuit
  • the processor 901 is used to execute the instructions stored in the memory and control the transceiver 902 to receive and send signals.
  • the processor 901 in the communication device 800 is used to determine The PCI of one cell conflicts with the second PCI of the second cell, where the first PCI corresponds to the first SSB and the second PCI corresponds to the second SSB; the transceiver 902 is configured to send instruction information to the second access network device, The indication information is used to indicate that the first PCI and the second PCI conflict.
  • the transceiver 902 is further configured to obtain SSB information corresponding to the first cell and SSB information corresponding to the second cell, and the SSB information corresponding to the first cell includes the first cell.
  • the SSB information corresponding to the second cell includes the second PCI.
  • the SSB information corresponding to the first cell further includes a frequency point corresponding to the first SSB
  • the SSB information corresponding to the second cell further includes a frequency point corresponding to the second SSB
  • the processor 901 Specifically used for: determining that the first SSB and the second SSB are adjacent, the frequency corresponding to the first SSB and the frequency corresponding to the second SSB are the same, and the first PCI and the second PCI are the same, determining the first PCI and the second PCI PCI conflict.
  • the processor 901 is specifically configured to: determine that the first SSB and the second SSB are directly adjacent; or, determine that the first SSB and the second SSB are directly adjacent to the third SSB, respectively.
  • the SSB information corresponding to the second cell further includes the type of the second SSB, and the type of the second SSB is CD-SBB or non-CD-SSB.
  • the indication information includes: the types of the second PCI and the second SSB; or, the frequency points corresponding to the second PCI and the second SSB; or, the types and the second PCI and the second SSB. Two frequency points corresponding to SSB.
  • the communication device is used for the CU
  • the second access network device may be a distributed unit DU
  • the CU corresponds to at least one DU
  • the CU supports the protocol stack function of the packet data convergence protocol PDCP and radio resource control RRC
  • the protocol stack function and the service data adaptation protocol SDAP protocol stack function At least one of the protocol stack function and the service data adaptation protocol SDAP protocol stack function.
  • DU supports the protocol stack function of the radio link control RLC, the protocol stack function of the media access control MAC, and the protocol stack function of the physical layer PHY.
  • the transceiver 902 is specifically configured to: send indication information to the second access network device through the F1 interface.
  • the communication device 900 is used for the primary node, the second access network device is the secondary node, and one primary node corresponds to at least one secondary node; the transceiver 902 is specifically used for: connecting to the second node through the Xn interface
  • the network access device sends instruction information; or, the instruction information is sent to the second access network device through the X2 interface.
  • the processor 902 is further configured to: modify the first PCI and/or the second PCI.
  • the device may be the second access network device in any of the foregoing embodiments, and may also be a component (such as a chip or a circuit) in the second access network device.
  • the solution corresponding to the second access network device in FIG. 4 and FIG. 6 can be executed.
  • the processor 901 is configured to execute the instructions stored in the memory and control the transceiver 902 to receive and send signals.
  • the processor 901 in the communication device 900 controls the transceiver 902. Used to receive indication information from the first access network device, the indication information is used to indicate that the first physical cell identity PCI of the first cell conflicts with the second PCI of the second cell, where the first PCI corresponds to the first SSB, The second PCI corresponds to the second SSB; the processor 901 is configured to modify the second PCI according to the instruction information.
  • the transceiver 902 is further configured to: send SSB information corresponding to the second cell to the first access network device, where the SSB information corresponding to the second cell includes the second PCI, The second cell belongs to the second access network device.
  • the processor 901 is specifically configured to determine the second SSB according to the instruction information, and modify the second PCI corresponding to the second SSB.
  • the first access network device is a centralized unit CU
  • the communication device 800 is used for a DU
  • the CU corresponds to at least one DU
  • the CU supports the protocol stack function of the packet data convergence protocol PDCP and radio resource control RRC
  • the protocol stack function and the service data adaptation protocol SDAP protocol stack function At least one of the protocol stack function and the service data adaptation protocol SDAP protocol stack function.
  • DU supports the protocol stack function of the radio link control RLC, the protocol stack function of the media access control MAC, and the protocol stack function of the physical layer PHY.
  • the transceiver 902 is specifically configured to: receive the indication information from the first access network device through the F1 interface.
  • the first access network device is the master node
  • the communication device 900 is used for the secondary node
  • one primary node corresponds to at least one secondary node
  • the transceiver 902 is specifically used for: receiving data from the first access network device through the Xn interface.
  • the instruction information of the access network device; or, the instruction information from the first access network device is received through the X2 interface.
  • FIG. 10 exemplarily shows a schematic structural diagram of a communication device provided by an embodiment of the present application.
  • the communication device 1000 includes a processing unit 1001.
  • a transceiver unit 1002 may also be included.
  • the communication apparatus 1000 in this example may be the first access network device in the foregoing content, and may execute the solutions corresponding to the first access network device in FIG. 3, FIG. 4, FIG. 6, FIG. 7 and FIG. 8.
  • the communication device 900 may also be the access network device 101 or the access network device 102 in FIG. 1, or the gNB101a or gNB102a in FIG. 1a, or the LTE eNB101b or LTE eNB102b in FIG. 1b. It can be LTE eNB101c or NRgNB102c in Figure 1c, ng-eNB102d or NRgNB101d in Figure 1d, DU102e in Figure 1e, or ng-eNB101f or ng-eNB101f in Figure 1f. NR gNB102f.
  • the processing unit 1001 is configured to determine that the first physical cell identifier PCI conflicts with the second PCI, where the first PCI corresponds to the first SSB, and the second PCI corresponds to the second SSB; the transceiver unit 1002 is configured to Send indication information to the second access network device and/or OAM, where the indication information is used to indicate that the first PCI and the second PCI conflict.
  • the transceiver unit 1002 is configured to receive indication information from the first access network device.
  • the indication information is used to indicate that the first PCI of the first cell conflicts with the second PCI of the second cell.
  • One PCI corresponds to the first SSB, and the second PCI corresponds to the second SSB; the processing unit 1001 is configured to modify the second PCI according to the instruction information.
  • the transceiver unit 1002 may be implemented by the transceiver 902 in FIG. 9 described above, and the processing unit 1001 may be implemented by the processor 901 in FIG. 9 described above. That is to say, the transceiver unit 1002 in the embodiment of the present application can execute the solution executed by the transceiver 902 in FIG. 9, and the processing unit 1001 in the embodiment of the application can execute the solution executed by the processor 901 in FIG. You can refer to the above content, which will not be repeated here.
  • the memory 903 included in the communication device 900 may be used to store the code when the processor 901 included in the communication device 900 executes the solution.
  • the code may be a program/code pre-installed when the communication device 1000 is shipped from the factory.
  • the communication system may include a first access network device and a second access network device, where the first access network device is used to determine that the first physical cell identity PCI conflicts with the second PCI, and report to the second access network device Send instruction information, the instruction information is used to indicate that the first PCI and the second PCI conflict, the first PCI corresponds to the first synchronous broadcast signal block SSB of the first access network device, and the second PCI corresponds to the second PCI signal block of the second access network device.
  • Two SSB The second access network device is configured to receive instruction information from the first access network device, and modify the second PCI according to the instruction information.
  • the above-mentioned embodiments it may be implemented in whole or in part by software, hardware, firmware or any combination thereof.
  • a software program it may be implemented in the form of a computer program product in whole or in part.
  • the computer program product includes one or more instructions.
  • the computer program instructions When the computer program instructions are loaded and executed on the computer, the processes or functions according to the embodiments of the present application are generated in whole or in part.
  • the computer can be a general-purpose computer, a dedicated computer, a computer network, or other programmable devices. Instructions can be stored in a computer storage medium, or transmitted from one computer storage medium to another computer storage medium.
  • the instructions can be sent from a website, computer, server, or data center through wired (such as coaxial cable, optical fiber, digital user DSL) or wireless (such as infrared, wireless, microwave, etc.) to another website, computer, server or data center.
  • a computer storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server or data center integrated with one or more available media.
  • Usable media can be magnetic media (for example, floppy disks, hard drives, magnetic tapes, magneto-optical disks (MO), etc.), optical media (for example, CD, DVD, BD, HVD, etc.), or semiconductor media (for example, ROM, EPROM, EEPROM, etc.)
  • Non-volatile memory NAND FLASH
  • solid state disk Solid State Disk, SSD
  • the embodiments of the present application can be provided as methods, systems, or computer program products. Therefore, the embodiments of the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the embodiments of the present application may adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program codes.
  • computer-usable storage media including but not limited to disk storage, CD-ROM, optical storage, etc.
  • These instructions can also be stored in a computer-readable memory that can guide a computer or other programmable data processing equipment to work in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture including the instruction device, and the instruction device implements A function specified in a flow or multiple flows in a flowchart and/or a block or multiple blocks in a block diagram.
  • These instructions can also be loaded on a computer or other programmable data processing equipment, so that a series of operation steps are executed on the computer or other programmable equipment to produce computer-implemented processing, so that the instructions executed on the computer or other programmable equipment provide Steps used to implement the functions specified in one process or multiple processes in the flowchart and/or one block or multiple blocks in the block diagram.

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Abstract

本申请提供的一种通信方法、装置、系统及存储介质，其中方法包括：第一接入网设备确定第一小区的第一PCI和第二小区的第二PCI发生冲突，向第二接入网设备发送指示信息，指示信息可用于指示第一PCI和第二PCI发生冲突，第一PCI对应第一SSB，第二PCI对应第二SSB。由于在NR系统中引入了SSB，第一PCI与第一SSB对应，第二PCI与第二SSB对应，第一接入网设备根据第一小区的第一PCI和第二小区的第二PCI来确定第一PCI和第二PCI发生冲突。如此，可实现对NR系统中SSB对应的PCI冲突的检测，有助于消除或减小NR网络中PCI冲突，从而可提高终端切换的成功率，进而可降低终端的掉话率。

Description

一种通信方法、装置、系统及存储介质
相关申请的交叉引用
本申请要求在2019年02月13日提交中国专利局、申请号为201910112807.7、发明名称为“一种通信方法、装置、系统及存储介质”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及通信技术领域，尤其涉及一种通信方法、装置、系统及存储介质。
背景技术
在长期演进(long term evolution，LTE)系统中，物理小区标识(physical cell identity，PCI)是无线小区的一个基本参数，用于区分不同的小区，一个小区可以对应一个PCI。在LTE系统中，小区的数量较多，但在目前的协议规范中，一共定义了504个PCI，因此，会出现PCI复用的情况，当小区复用PCI时可能会出现PCI冲突问题。
为了避免或减少PCI冲突，在LTE系统中引入了PCI冲突检测与重分配，主要是基站通过交互各基站下的小区的PCI信息来检测是否发生PCI冲突。
然而，随着第五代(5th-Generation，5G)网络的快速发展，在新空口(new radio，NR)系统下引入了波束相关的特性，其中，波束相关的特性可能会影响PCI分配，若仍沿用LTE系统中通过检测小区的PCI来检测PCI是否冲突，仍存在终端切换的成功率较低、掉话率较高的问题。
发明内容
本申请提供一种通信方法、装置、系统及存储介质，用以减少PCI冲突，以实现提高终端切换的成功率。
第一方面，本申请提供一种通信方法，该方法包括第一接入网设备确定第一小区的第一PCI和第二小区的第二PCI发生冲突，第一接入网设备向第二接入网设备和/或集中式管理节点发送指示信息，其中，第一PCI对应第一同步广播信号块(synchronization signal and PBCH block，SSB)，第二PCI对应第二SSB，指示信息可用于指示第一PCI和第二PCI发生冲突，集中式管理节点用于管理第一接入网设备和第二接入网设备。
基于该方案，由于在NR系统中引入了SSB，第一PCI与第一SSB对应，第二PCI与第二SSB对应，第一接入网设备根据第一小区的第一PCI和第二小区的第二PCI来确定第一PCI和第二PCI发生冲突。如此，可实现对NR系统中SSB对应的PCI冲突的检测，有助于消除或减小NR网络中PCI冲突，从而可提高终端切换的成功率，进而可降低终端的掉话率。
在一种可能的情况下，第一小区对应一个第一PCI，第二小区对应一个第二PCI。
在另一种可能情况下，第一小区包括一个或多个第一SSB。在第一小区包括一个第一SSB的情况下，第一小区的第一PCI为第一SSB对应的第一PCI。在第一小区包括多个第 一SSB的情况下，第一小区的第一PCI可指多个第一SSB中的一个第一SSB对应的第一PCI。
类似地，第二小区可包括一个或多个第二SSB。在第二小区包括一个第二SSB的情况下，第二小区的第二PCI即为第二SSB对应的第二PCI。在第二小区包括多个第二SSB的情况下，第二小区的第二PCI可指多个第二SSB中的一个第二SSB对应的第二PCI。
可选地，第一小区属于第一接入网设备，且第二小区属于第二接入网设备，例如第一接入网设备是主节点，第一小区是主节点管理的小区，且第二接入网设备是辅节点，第二小区是辅节点管理的小区。又例如，第一接入网设备和第二接入网设备是不同的节点(如基站)，且第一小区与第二小区分别由不同的节点管理。又例如，第一接入网设备和第二接入网设备是不同的集中式单元(central unit，CU)，且第一小区与第二小区分别由不同的CU管理。
可选地，第一小区和第二小区都属于第一接入网设备。例如，第一接入网设备是主节点，第二接入网设备是辅节点，且第一小区和第二小区是该主节点管理的不同小区。又例如，第一接入网设备是基站，第一小区和第二小区是该基站管理的不同小区。
可选地，第一小区和第二小区都属于第二接入网设备。例如，第一接入网设备是CU，第二接入网设备是分布式单元(distributed unit，DU)，且第一小区和第二小区是该DU管理的不同小区。又例如，第一接入网设备是主节点，第二接入网设备是辅节点，且第一小区和第二小区是该辅节点管理的不同小区。又例如，第二接入网设备是基站，第一小区和第二小区是该基站管理的不同小区。
可选地，第一小区属于第二接入网设备，且第二小区属于第三接入网设备，其中，第二接入网设备和第三接入网设备都由第一接入网设备管理。例如，第一接入网设备是CU，第二接入网设备与第三接入网设备是该CU管理的不同DU，则第一小区与第二小区分属不同的DU管理。
在一种可能的实现方式中，第一接入网设备获取第一小区对应的SSB信息和第二小区对应的SSB信息，第一小区对应的SSB信息包括第一PCI，第二小区对应的SSB信息包括第二PCI。
在另一种可能的实现方式中，第一小区对应的SSB信息还包括第一SSB对应的频点，第二小区对应的SSB信息还包括第二SSB对应的频点。
在又一种可能的实现方式中，第一小区对应的SSB信息还可包括第一SSB的类型，第二小区对应的SSB信息还可包括第二SSB的类型，SSB(第一SSB或第二SSB)的类型为小区定义-同步广播信号块(cell defining SSB，CD-SBB)或非小区定义-同步广播信号块(non cell defining SSB，non CD-SSB)。如此，第一接入网设备可根据第二SSB的类型检测出发生冲突的第一PCI和第二PCI的冲突类型，而且，可优先选择修改non CD-SSB对应的PCI，有助于降低因修改PCI对终端设备接入接入网设备的影响。
基于上述SSB信息，在一种可能的实现方式中，第一接入网设备确定第一SSB和第二SSB相邻、第一SSB对应的频点和第二SSB对应的频点相同、且第一PCI和第二PCI相同时，可确定第一PCI和第二PCI发生冲突。
在另一种可能的实现方式中，第二小区对应的SSB信息还可包括第二SSB对应的MTC、第二SSB对应的SCS和第二SSB对应的时域中的任一个或任多个。第一小区对应的SSB信息还可包括第一SSB对应的MTC、第一SSB对应的SCS和第一SSB对应的时域中的 任一个或任多个。
基于另一种可能的实现方式中的SSB信息，第一接入网设备确定第一SSB与第二SSB相邻、且第一SSB对应的频点和/或测量时间配置(measurement timing configuration，MTC)和/或子载波间隔(subcarrier spacing，SCS)和/或时域(SSB occasion)分别与第二SSB对应的频点和/或MTC和/或SCS和/或SSB occasion分别相同、且第一SSB对应的第一PCI与第二SSB对应的第二PCI相同时，可确定第一PCI和第二PCI发生冲突。
其中，第一SSB对应的频点和/或MTC和/或SCS和/或SSB occasion分别与第二SSB对应的频点和/或MTC和/或SCS和/或SSB occasion分别相同，具体可指：第一SSB对应的频点与第二SSB对应的频点相同，第一SSB对应的MTC与第二SSB对应的MTC相同，第一SSB对应的SCS与第二SSB对应的SCS相同，第一SSB对应的SSB occasion与第二SSB对应的SSB occasion相同。
其中，第一SSB和第二SSB相邻包括两种情形。情形一，第一SSB和第二SSB直接相邻。情形二，第一SSB和第二SSB分别与第三SSB直接相邻，该情形二中，也可称为第一SSB和第二SSB间接相邻。
在一种可能的实现方式中，指示信息包括第二PCI、第二SSB对应的频点、第二SSB的类型、第二SSB对应的MTC、第二SSB对应的SCS、第二SSB对应的时域以及第二SSB对应的NCGI中的一种或多种。
示例性地，指示信息可包括第二PCI；或者，指示信息可包括第二PCI和第二SSB的类型；或者，指示信息可包括第二PCI和第二SSB对应的频点；或者，指示信息可包括第二PCI、第二SSB的类型和第二SSB对应的频点，或者指示信息还可包括其他可能的组合方式或其中任一种，本申请不做限定。基于指示信息的内容，可确定出需要修改的PCI。
在一种可能的实现方式中，第一接入网设备可为CU，第二接入网设备和第三接入网设备可为DU，CU对应至少一个DU，CU支持分组数据汇聚协议层(packet data convergence protocol，PDCP)的协议栈功能、无线资源控制(radio resource control，RRC)的协议栈功能和业务数据适应协议层(service data adaptation protocol，SDAP)的协议栈功能中的至少一种，DU支持无线链路控制(radio link control，RLC)的协议栈功能、媒体访问控制(medium access control，MAC)的协议栈功能和物理层(physical layer，PHY)的协议栈功能中的至少一种；在该情况下，第一接入网设备可通过F1接口向第二接入网设备发送指示信息。
在另一种可能的实现方式中，第一接入网设备可为主节点，第二接入网设备可为辅节点，一个主节点对应至少一个辅节点。基于不同的网络架构，第一接入网设备向第二接入网设备发指示信息的接口可能不同。比如，第一接入网设备可通过Xn接口向第二接入网设备发送指示信息；再比如，第一接入网设备可通过X2接口向第二接入网设备发送指示信息。
在一种可能的实现方式中，第一接入网设备可修改第一PCI和/或第二PCI，以实现第一SSB对应的修改后的PCI和第二PCI不冲突。
进一步，为了提高第一接入网设备修改第一PCI和/或第二PCI的效率。第一接入网设备可获取第一PCI的范围信息和/或第二PCI范围信息，第一PCI的范围信息为第一小区可用的PCI的范围，第二PCI范围信息为第二小区可用的PCI范围。
具体地，在第一小区包括一个第一SSB的情况下，第一小区可用的PCI范围即为第一 SSB可用的PCI范围。在第一小区包括多个第一SSB的情况下，第一小区可用的PCI范围指多个第一SSB中的各个第一SSB可用的PCI范围。相应地，在第二小区包括一个第二SSB的情况下，第二小区可用的PCI范围即为第二SSB可用的PCI范围。在第二小区包括多个第二SSB的情况下，第二小区可用的PCI范围指多个第二SSB中的各个第二SSB可用的PCI范围。
在一种可能的实现方式中，第一接入网设备中可维护有一个可用的PCI集，第一接入网设备可以使用PCI集中任意一个PCI。如此，第一接入网设备可从维护的PCI集中选取一个可用的PCI替换第一PCI和/或第二PCI，不需要第二接入网设备向OAM索要可用的PCI，也有助于提高修改冲突PCI的效率。
在一种可能的实现方式中，集中式管理节点可以为操作管理和维护(opertation administration and maintenance，OAM)设备。
第二方面，本申请提供一种通信方法，该方法包括第二接入网设备接收来自第一接入网设备的指示信息，第二接入网设备根据指示信息修改第二PCI。其中，指示信息用于指示第一小区的第一PCI和第二小区的第二PCI发生冲突，第一PCI对应第一SSB，第二PCI对应第二SSB。
基于该方案，由于在NR系统中引入了SSB，第一PCI对应第一SSB，第二PCI对应第二SSB，第二接入网设备收到的指示信息用于指示第一PCI和第二PCI发生冲突，第二接入网设备可根据指示信息修改第二PCI，以使第二SSB对应的修改后的PCI与第一PCI不冲突，如此，有助于消除或减小NR网络中PCI冲突，从而可提高终端切换的成功率，进而可降低终端的掉话率。
在一种可能的实现方式中，第一小区属于第一接入网设备，且第二小区属于第二接入网设备；或者，第一小区和第二小区都属于第一接入网设备；或者，第一小区和第二小区都属于第二接入网设备；或者，第一小区属于第二接入网设备，且第二小区属于第三接入网设备，其中，第二接入网设备和第三接入网设备都由第一接入网设备管理。
在一种可能的实现方式中，第二接入网设备可向集中式管理节点发送指示信息，以使集中式管理节根据指示信息修改第二PCI或者修改第一PCI。
在一种可能的实现方式中，第二接入网设备向第一接入网设备发送第二小区对应的SSB信息，第二小区对应的SSB信息包括第二PCI，第二小区属于第二接入网设备。
在一种可能的实现方式中，第二接入网设备可根据指示信息确定第二SSB，并修改第二SSB对应的第二PCI。
在一种可能的实现方式中，第二接入网设备中可维护有一个可用的PCI集，第二接入网设备可以使用PCI集中任意一个PCI。如此，第二接入网设备也可从维护的PCI集中选取一个可用的PCI替换第二PCI，不需要第二接入网设备向OAM索要可用的PCI，也有助于提高修改冲突PCI的效率。
在一种可能的实现方式中，第二小区对应的SSB信息还包括第二SSB对应的频点和/或第二SSB的类型，其中，第二SSB的类型为CD-SBB或non CD-SSB。
在一种可能的实现方式中，指示信息包括第二PCI和第二SSB的类型。在又一种可能的实现方式中，指示信息包括第二PCI和第二SSB对应的频点。在又一种可能的实现方式中，指示信息包括第二PCI、第二SSB的类型和第二SSB的对应的频点。
在一种可能的实现方式中，第一接入网设备为CU，第二接入网设备和第三接入网设 备均为DU，CU对应至少一个DU，CU支持PDCP的协议栈功能、RRC的协议栈功能和SDAP的协议栈功能中的至少一种，DU支持RLC的协议栈功能、MAC的协议栈功能和PHY的协议栈功能中的至少一种；在该场景下，第二接入网设备可通过F1接口接收来自第一接入网设备的指示信息。
在另一种可能的实现方式中，第一接入网设备为主节点，第二接入网设备为辅节点，一个主节点对应至少一个辅节点。在该场景下，一种情况为第二接入网设备可通过Xn接口接收来自第一接入网设备的指示信息；另一种情况为第二接入网设备可通过X2接口接收来自第一接入网设备的指示信息。
第三方面，本申请实施例提供的一种通信方法，该方法包括第一接入网设备获取第一PCI的范围信息和/或第二PCI的范围信息，可根据第一PCI的范围信息修改第一PCI，和/或，根据第二PCI的范围信息修改第二PCI。其中，第一PCI的范围信息为第一小区可用的PCI范围，第二PCI的范围信息为第二小区可用的PCI范围。
基于该方案，第一接入网设备可根据获取的PCI的范围信息修改发生冲突的PCI，有助于提高修改PCI的效率。
第一接入网设备获取第一PCI的范围信息和/或第二PCI的范围信息可分如下四种情形。
情形一，第一小区属于第一接入网设备，且第二小区属于第二接入网设备的情况下，第一接入网设备可从本地获取第一PCI的范围信息，第一接入网设备可从第二接入网设备获取第二PCI的范围信息。
在一种可能的实现方式中，第一PCI的范围信息可以是第一接入网设备自己确定的，也可以是第一接入网设备的OAM确定之后，发送给第一接入网设备的。第二PCI的范围信息也可以是第二接入网设备自己确定的，也可以是第二接入网设备的OAM确定之后，发送给第二接入网设备。
情形二，第一小区和第二小区都属于第一接入网设备的情况下，第一接入网设备可以从本地获取第一PCI的范围信息和第二PCI的范围信息。
在一种可能的实现方式中，第一PCI的范围信息和第二PCI的范围信息可以均是第一接入网设备自己确定的，也可以是第一接入网设备的OAM确定之后，发送给第一接入网设备的。
情形三，第一小区和第二小区都属于第二接入网设备的情况下，第一接入网设备可以从第二接入网设备获取第一PCI的范围信息和第二PCI的范围信息。
在一种可能的实现方式中，第一PCI的范围信息和第二PCI的范围信息可以是第二接入网设备自己确定的，也可以是第二接入网设备的OAM确定之后，发送给第二接入网设备的。
情形四，第一小区属于第二接入网设备，且第二小区属于第三接入网设备的情况下，第一接入网设备可以从第二接入网设备获取第一PCI的范围信息，且从第三接入网设备获取第二PCI的范围信息，其中，第二接入网设备和第三接入网设备都由第一接入网设备管理。
在一种可能的实现方式中，第一PCI的范围信息可以是第二接入网设备自己确定的，也可以是第二接入网设备的OAM确定之后，发送给第二接入网设备的。第二PCI的范围信息也可以是第三接入网设备自己确定的，也可以是第三接入网设备的OAM确定之后，发送给第三接入网设备。
在一种可能的实现方式中，第一接入网设备可为CU，第二接入网设备可为DU。
第四方面，本申请实施例提供一种通信装置，该通信装置具有实现上述实施例中的第一接入网设备和/或第二接入网设备的功能。该功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。该硬件或软件包括一个或多个与上述功能相对应的单元或模块。
在一种可能的设计中，该通信装置包括：处理器，该处理器被配置为支持该通信装置执行以上所示通信方法中接入网设备的相应功能。该通信装置还可以包括存储器，该存储可以与处理器耦合，其保存该通信装置必要的程序指令和数据。可选地，该通信装置还包括收发器，该收发器用于支持该通信装置与中继设备、接入网设备等网元之间的通信。其中，收发器可以为独立的接收器、独立的发射器、集成收发功能的收发器、或者是接口电路。
在一个可能的实现方式中，该通信装置可以是接入网设备，或者可用于接入网设备的部件，例如芯片或芯片系统或者电路。
第五方面，本申请实施例提供一种通信装置，用于实现上述第一方面或第一方面中的任意一种方法，或者用于实现上述第二方面或第二方面中的任意一种方法，或者用于实现上述第三方面或第三方面中的任意一种方法，包括相应的功能模块，分别用于实现以上方法中的步骤。功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。硬件或软件包括一个或多个与上述功能相对应的模块。
在一种可能的实施方式中，通信装置的结构中包括处理单元和收发单元，这些单元可以执行上述方法示例中相应功能，具体参见方法示例中的详细描述，此处不做赘述。
第六方面，本申请实施例提供一种通信系统，该通信系统包括第一接入网设备和第二接入网设备。其中，第一接入网设备可以用于执行上述第一方面或第一方面中的任意一种方法，第二接入网设备可以用于执行上述第二方面或第二方面中的任意一种方法，或者用于实现上述第三方面或第三方面中的任意一种方法。
第七方面，本申请实施例提供一种计算机可读存储介质，计算机可读存储介质中存储有指令，当其在计算机上运行时，使得计算机执行第一方面或第一方面的任意可能的实现方式中的方法、或者使得计算机执行第二方面或第二方面的任意可能的实现方式中的方法，或者用于实现上述第三方面或第三方面中的任意一种方法。
第八方面，本申请实施例提供一种包含指令的计算机程序产品，当其在计算机上运行时，使得计算机执行第一方面或第一方面的任意可能的实现方式中的方法、或者使得计算机执行第二方面或第二方面的任意可能的实现方式中的方法，或者用于实现上述第三方面或第三方面中的任意一种方法。
附图说明
图1为本申请提供的一种通信系统架构示意图；
图1a为本申请提供的一种NR SA组网架构示意图；
图1b为本申请提供的另一种NR SA组网架构示意图；
图1c为本申请提供的一种EN-DC架构示意图；
图1d为本申请提供的一种MR-DC架构示意图；
图1e为本申请提供的一种NR的CU-DU架构示意图；
图1f为本申请提供的另一种MR-DC架构示意图；
图2为本申请提供的一种第一SSB和第二SSB直接相邻的示意图；
图2a为本申请提供的一种第一SSB和第二SSB间接相邻的示意图；
图3为本申请提供的一种通信方法流程示意图；
图4为本申请提供的另一种通信方法流程示意图；
图5为本申请提供的另一种通信方法流程示意图；
图6为本申请提供的又一种通信方法流程示意图；
图7为本申请提供的又一种通信方法流程示意图；
图8为本申请提供的另一种通信方法流程示意图；
图9为本申请提供的一种通信装置的结构示意图；
图10为本申请提供的一种通信装置的结构示意图。
具体实施方式
本申请的说明书实施例和权利要求书及上述附图中的术语“第一”、“第二”等是用于区别类似的对象，而不必用于描述特定的顺序或先后次序。
应理解，在本申请中，“至少一个(项)”是指一个或者多个，“多个”是指两个或两个以上。“和/或”，用于描述关联对象的关联关系，表示可以存在三种关系，例如，“A和/或B”可以表示：只存在A，只存在B以及同时存在A和B三种情况，其中A，B可以是单数或者复数。字符“/”一般表示前后关联对象是一种“或”的关系。“以下至少一项(个)”或其类似表达，是指这些项中的任意组合，包括单项(个)或复数项(个)的任意组合。例如，a，b或c中的至少一项(个)，可以表示：a，b，c，“a和b”，“a和c”，“b和c”，或“a和b和c”，其中a，b，c可以是单个，也可以是多个。
图1示例性示出了本申请提供的一种通信系统架构示意图。该通信系统可以包括接入网设备。可选地，还可包括集中式管理节点和终端设备，集中式管理节点可以是OAM设备，可用于管理接入网设备，为了便于说明，以下实施例均以集中式节点为OAM设备为例说明。图1以通信系统包括接入网设备101、接入网设备102、OAM103、终端设备104和终端设备105为例说明。如图1所示，终端设备104接入接入网设备101，终端设备105接入接入网设备102，接入网设备101和接入网设备102可分别包括至少一个小区，一个小区可包括一个或多个SSB，不同的SSB可以对应相同的PCI，也可以对应不同的PCI。接入网设备101与接入网设备102可通过接口消息交互各自的小区和/或小区的SSB的信息。
本申请中的通信系统可以是通用移动通信系统(universal mobile telecommunications system，UMTS)，或者是全球移动通信系统(global system for mobile communication，GSM)/增强型数据速率GSM演进(enhanced data rate for GSM evolution，EDGE)系统，或者是长期演进(long term evolution，LTE)无线通信系统，或者是NR系统等第五代(5th generation，5G)移动通信系统、还可以是其他通信系统，例如公共陆地移动网络(public land mobile network，PLMN)系统，或未来可能出现的其他通信系统等，本申请不做限定。
接入网设备，又可称为无线接入网设备，用于将终端设备接入到无线网络中的设备。可以是各种通信系统中的接入网设备，例如：UMTS中的基站(node B)、LTE无线通信系统中的宏基站eNB、5G移动通信系统中的gNB、传输接收点(transmission reception point，TRP)等基站设备、C-RAN组网中的基带处理单元池(building base band unit pool，BBU  pool)，还可以是无线网络控制器(radio network controller，RNC)、网络设备控制器(base station controller，BSC)、网络设备收发台(base transceiver station,BTS)、家庭网络设备(例如，home evolved NodeB，或Home Node B，HNB)，也可以是分布式基站场景中的CU或者DU，其中，CU支持PDCP的协议栈功能、RRC的协议栈功能和SDAP的协议栈功能中的至少一种，或者，CU可支持PDCP的协议栈功能、RRC的协议栈功能和SDAP的协议栈功能中的至少一种的部分功能，需要说明的是，CU支持的协议栈的功能可能会发生变化，本申请不做限定。DU支持RLC的协议栈功能、MAC的协议栈功能和PHY的协议栈功能中的至少一种，或者，DU支持RLC的协议栈功能、MAC的协议栈功能和PHY的协议栈功能中的至少一种中的部分功能，需要说明的是，DU支持的协议栈的功能可能会发生变化，本申请不做限定。
示例性地，当CU连接5GC时，CU可支持PDCP的协议栈功能、RRC的协议栈功能和SDAP的协议栈功能。当CU连接演进的分组核心网(evolved packet core，EPC)时，支持PDCP的协议栈功能和RRC的协议栈功能。
需要说明的是，CU和DU可以是整体接入网设备中的两个物理或者逻辑分离模块，也可以是完全独立的两个逻辑网元。
终端设备，也可称为终端、或用户设备(user equipment，UE)。可以是具有无线连接功能的手持式设备、车载设备、具有通信功能的路边基础设施等。例如：手机、平板电脑、笔记本电脑、掌上电脑、移动互联网设备(mobile internet device，MID)、可穿戴设备、无人机设备等，其中，可穿戴设备例如包括：智能手表、智能手环、计步器等。
基于图1所示的通信系统架构，本申请提供了如下三种可能的场景。
场景一，NR独立(standlone，SA)组网架构。
如图1a所示，为本申请提供的一种NR SA组网架构示意图。该架构中，gNB101a和gNB102a可分别通过NG接口连接到5G核心网(5G corenetwork，5GC)，gNB101a和gNB102a之间可通过Xn接口(也称为Xn控制面(Xn-control plane，Xn-C)接口)连接。一种可能的情况下，gNB101a可为上述图1中的接入网设备101、gNB102a可为上述图1中的接入网设备102。
如图1b所示，为本申请提供的另一种NR SA组网架构示意图。该架构中LTE演进基站(evolved NodeB，eNB)101b和LTE eNB102b也可通过NG接口连接至5G核心网，LTE eNB101b和LTE eNB102b之间也可通过X2-C接口连接。一种可能的情况下，LTE eNB101b可为上述图1中的接入网设备101、LTE eNB102b可为上述图1中的接入网设备102。
场景二，多链接数据传输架构(也可称为主-辅节点架构)。
需要说明的是，该场景二又可分为如下两种网络架构。
网络架构一，演进的通用地面无线接入网和NR的双链接(E-UTRA-NR dual connectivity，EN-DC)网络架构。
如图1c所示，为本申请提供的一种EN-DC架构示意图。该架构中的主节点可为LTE eNB101c，辅节点为NR gNB102c，其中，LTE eNB101c也可称为锚基站。LTE eNB101c可通过S1-移动性管理网元(mobility management entity，S1-MME)接口连接到4G核心网中的MME或服务网关(service gateway，SGW)，LTE eNB101c和NR gNB102c之间可通过X2-C接口连接。一种可能的情况下，LTE eNB101c可为上述图1中的接入网设备101、NR gNB102c可以为上述图1中的接入网设备102。
网络架构二，多无线双链接(multi-radio dual connectivity，MR-DC)网络架构。
该网络架构二可分为如下两种可能情形。
情形1，主节点和辅节点连接的核心网为EPC(也可称为EN-DC架构)。
该情形1可参见上述图1c所示的EN-DC架构的介绍，此处不再赘述。
情形2，主节点和辅节点连接的核心网为5GC。
该情形2又可分如下两种情形(即情形2.1和情形2.2)。
情形2.1，主节点为NR gNB101d，辅节点为ng-eNB102d。
如图1d所示，为本申请提供的一种MR-DC架构示意图。该架构中的主节点为NR gNB101d，辅节点为ng-eNB102d，NR gNB101d也可称为锚基站。NR gNB101d通过NG-C接口连接到5G核心网的移动性管理功能(core access and mobility management function，AMF)网元或用户面功能(user plane function，UPF)网元，NR gNB101d和ng-eNB102d之间可通过Xn-C接口连接。
情形2.2，主节点为ng-eNB101f，辅节点为NR gNB102f。
如图1f所示，为本申请提供的另一种MR-DC架构示意图。该架构中的主节点为ng-eNB101f，辅节点为NR gNB102f，ng-eNB101f也可称为锚基站。ng-eNB101f通过NG-C接口连接到5G核心网的AMF网元，NR gNB102f和ng-eNB101f之间可通过Xn-C接口连接。
场景三，CU-DU架构。
该架构中CU对应至少一个DU，该架构可以是LTE的CU-DU架构，也可以是NR的CU-DU架构。如图1e所示，为本申请提供的一种NR的CU-DU架构示意图。该架构以包括gNB-1和gNB-2，gNB-1包括一个CU101e和两个DU102e，gNB-2也包括一个CU101e和两个DU102e为例说明，其中，gNB-1和gNB-2可以为相同的gNB。gNB-1中的CU101e和gNB-2中的CU101e之间可通过Xn-C接口连接，gNB-1中的CU101e和DU102e之间、以及gNB-2中的CU101e和两个DU102e之间也通过F1接口连接。
基于场景三，可分如下三种情形。
情形一，gNB-1中的CU101e可为上述图1中的接入网设备101、gNB-1中的DU102e可为上述图1中的接入网设备102。
情形二，gNB-1中的CU101e可为上述图1中的接入网设备101，gNB-2中的DU102e可为上述图1中的接入网设备102。
情形三，gNB-1中的CU101e可为上述图1中的接入网设备101、gNB-2中的CU101e可为上述图1中的接入网设备102。
在介绍本申请的方法之前，首先对本申请所涉及的应用场景进行进一步的介绍说明，以便于理解本方案。需要说明的是，该部分内部也作为本申请的发明内容的一部分可选地的内容。
在一种可能的实现方式中，一个接入网设备下可有一个或多个小区，每个小区可以对应一个PCI。进一步地，一个小可以区对应一个或多个SSB。当一个小区对应一个SSB时，小区的PCI即为该小区下的SSB对应的PCI，也可以理解为，SSB对应的PCI为SSB所属的小区的PCI。当一个小区对应多个SSB时，一个SSB对应一个PCI，小区的PCI为多个SSB中的一个SSB对应的PCI。在一种可能的实现方式中，也可以将一个SSB认为是一个虚拟的小区，即一个虚拟的小区对应一个PCI。
在一种可能的实现方式中，一个SSB对应一个频点。在接入网设备的载波的频率范围内，可以传输多个SSB，在不同的频率位置传输的SSB的PCI可以不是唯一的，例如，不同频率位置上的SSB可能具有不同的PCI。当SSB与保存的最小系统消息(remaining minimum system information，RMSI)关联时，SSB可对应一个独立的小区，具有唯一的NR小区全球唯一标识(NR cell global identifier，NCGI)，具有唯一NCGI的SSB可称为CD-SSB。在另一种可能的实现方式中，一个小区可对应多个SSB时，可以根据SSB是否有对应的NCGI分为CD-SBB或non CD-SSB，对应有NCGI的可称为CD-SBB，没有对应NCGI的SSB可称为non CD-SSB，一个小区可包括一个CD-SBB和至少一个non CD-SSB。其中，CD-SBB或non CD-SSB也称为SSB的类型。
示例性地，在本申请中，将不同的接入网设备示意为第一接入网设备，第二接入网设备和第三接入网设备。例如，在CU-DU场景下，第一接入网设备可以为CU，且第二接入网设备与第三接入网设备为该CU管理的不同DU。又例如，在MR-DC场景下，第一接入网设备可以为主节点，且第二接入网设备/第三接入网设备为辅节点。
示例性地，在本申请中，将PCI发生冲突的小区称为第一小区与第二小区，且第一小区下的任一SSB，称为第一SSB，第一SSB对应的PCI，称为第一PCI。第二小区下的任一SSB称为第二SSB，第二SSB对应PCI，称为第二PCI。可以理解，在不同的组网场景中，第一小区和第二小区对应的接入网设备不同。例如，在上述CU-DU场景下，第一小区属于第二接入网设备，且第二小区属于第三接入网设备。在上述MR-DC场景下，第一小区属于第一接入网设备，且第二小区属于第二接入网设备/第三接入网设备。
本申请中，对于第一小区的第一PCI和第二小区的第二PCI发生冲突的可有如下定义：
可能的定义：第一小区和第二小区相邻，第一小区对应的频点和第二小区对应的频点相同，且第一小区的PCI和第二小区的PCI相同。其中，第一小区和第二小区相邻，包括第一小区和第二小区直接相邻；或者，第一小区和第二小区分别于第三小区直接相邻，且第一小区和第二小区不直接相邻，该情况下也成为第一小区和第二小区间接相邻。
本申请中，也可基于第一小区下的第一SSB和第二小区下的第二SSB，对第一SSB对应的第一PCI，与第二SSB对应的第二PCI发生冲突的可进行如下定义：
可能的定义一：第一SSB和第二SSB相邻、第一SSB对应的频点和第二SSB对应的频点相同、且第一PCI和第二PCI相同。
本申请中，第一SSB和第二SSB相邻包括第一SSB和第二SSB直接相邻；或者，第一SSB和第二SSB分别与第三SSB直接相邻，且第一SSB和第二SSB不直接相邻，该情况下也称为第一SSB和第二SSB间接相邻。可选地，直接相邻包括地理位置上相邻和/或信号覆盖区域的重叠。如图2所示，为本申请提供的一种第一SSB和第二SSB直接相邻的示意图。如图2a所示，为本申请提供的一种第一SSB和第二SSB间接相邻的示意图，其中，第一SSB与第三SSB直接相邻、第二SSB与第三SSB直接相邻、且第一SSB和第二SSB不直接相邻。
可能的定义二，第一SSB与第二SSB相邻、且第一SSB对应的频点和/或测量时间配置(measurement timing configuration，MTC)和/或子载波间隔(subcarrier spacing，SCS)和/或时域(SSB occasion)与第二SSB对应的频点和/或MTC和/或SCS和/或SSB occasion分别相同、且第一SSB对应的第一PCI与第二SSB对应的第二PCI相同。
其中，第一SSB对应的频点和/或MTC和/或SCS和/或SSB occasion与第二SSB对应 的频点和/或MTC和/或SCS和/或SSB occasion分别相同，具体可指：第一SSB对应的频点与第二SSB对应的频点相同，和/或，第一SSB对应的MTC与第二SSB对应的MTC相同，和/或，第一SSB对应的SCS与第二SSB对应的SCS相同，和/或，第一SSB对应的SSB occasion与第二SSB对应的SSB occasion相同。其中，第一SSB对应的频点和/或MTC和/或SCS和/或SSB occasion可表示如下可能的组合方式：第一SSB对应的频点、第一SSB对应的MTC，第一SSB对应的SCS、第一SSB对应的SSB occasion、第一SSB对应的频点和MTC、第一SSB对应的频点和SCS、第一SSB对应的频点和SSB occasion、第一SSB对应的MTC和SCS、第一SSB对应的MTC和SSB occasion、第一SSB对应的SCS和SSB occasion以及第一SSB对应的频点和MTC和SCS和SSB occasion。同理，第二SSB对应的频点和/或MTC和/或SCS和/或SSB occasion也有多种可能的组合方式，组合方式可参见上述第一SSB的组合方式，此处不再赘述。
需要说明的是，直接相邻的SSB的PCI冲突称为PCI碰撞(PCI collision)，间接相邻的SSB的PCI冲突也可以称为PCI混淆(PCI confusion)，具体名字本申请在此不限定。其中，直接相邻可以理解为终端设备能测量到的小区均为直接相邻，间接相邻可以理解为终端设备测量到的小区与服务小区的邻区为间接相邻。
本申请提供的如下两种确定第一SSB和第二SSB相邻(包括直接相邻和间接相邻)的方式。
实现方式一，若第一SSB所属的小区与第二SSB所属的小区相邻，则确定第一SSB与第二SSB相邻。
示例性地，第一接入网设备和第二接入网设备交互的信息中可包括服务小区和服务小区的邻区。比如，服务小区是第二接入网设备的小区1，服务小区的邻区是小区2和小区3，第一接入网设备收到第二接入网设备发送的该信元后，可确定第一接入网设备下的小区包括的SSB与小区1包括的SSB直接相邻，第一接入网设备下的小区包括的SSB与小区2包括的SSB和小区3包括的SSB均为间接相邻。该示例性中的SSB可以是CD-SSB，也可以是non CD-SSB。
实现方式二，接入网设备可以定义一个信元，该信元用于指示与服务SSB(如第二SSB)相邻的SSB，第一接入网设备收到第二接入网设备发送的信息中包括定义的该信元，可根据定义的该信元分别确定与服务SSB(如第二SSB)直接相邻的SSB、以及与服务SSB间接相邻的SSB。该示例性中的服务SSB可以是CD-SSB，也可以是non CD-SSB，与该服务SSB相邻的SSB也可以是CD-SSB，或者也可以是non CD-SSB。
基于上述SSB可分为CD-SBB或non CD-SSB，第一PCI和第二PCI冲突可分为如下三类情形定义。情形A，CD-SBB之间的PCI冲突。
该情形下，第一SSB为第一CD-SSB，第二SSB为第二CD-SSB，根据第一CD-SSB和第二CD-SBB之间直接相邻或者间接相邻，可分为情形A-1和情形A-2。
情形A-1，CD-SBB之间的PCI碰撞。
具体可为：第一CD-SSB与第二CD-SSB直接相邻、且第一CD-SSB对应的频点和/或MTC和/或SCS和/或SSB occasion分别与第二CD-SSB对应的频点和/或MTC和/或SCS和/或SSB occasion分别相同、且第一CD-SSB对应的第一PCI与第二CD-SSB对应的第二PCI相同。
情形A-2，CD-SBB之间的PCI混淆。
具体可为：第一CD-SSB与第二CD-SSB间接相邻、且第一CD-SSB对应的频点和/或MTC和/或SCS和/或SSB occasion与第二CD-SSB对应的频点和/或MTC和/或SCS和/或SSB occasion分别相同、且第一CD-SSB对应的第一PCI与第二CD-SSB对应的第二PCI相同。
情形B，non CD-SSB之间的PCI冲突。
该情形下，第一SSB为第一non CD-SSB，第二SSB为第二non CD-SSB，根据第一non CD-SSB和第二non CD-SBB之间直接相邻或者间接相邻，可分为情形B-1和情形B-2。
情形B-1，non CD-SSB之间的PCI碰撞。
具体可为：第一non CD-SSB与第二non CD-SSB直接相邻、且第一non CD-SSB对应的频点和/或MTC和/或SCS和/或SSB occasion与第二non CD-SSB对应的频点和/或MTC和/或SCS和/或SSB occasion分别相同、且第一non CD-SSB对应的第一PCI与第二non CD-SSB对应的第二PCI相同。
情形B-2，non CD-SSB之间的PCI混淆；
具体可为：第一non CD-SSB与第二non CD-SSB间接相邻、且第一non CD-SSB对应的频点和/或MTC和/或SCS和/或SSB occasion与第二non CD-SSB对应的频点和/或MTC和/或SCS和/或SSB occasion分别相同、且第一non CD-SSB对应的第一PCI与第二non CD-SSB对应的第二PCI相同。
情形C，CD-SBB和non CD-SSB之间的PCI冲突。
该情形下，第一SSB为第一non CD-SSB，第二SSB为第二CD-SSB，根据第一non CD-SSB和第二CD-SBB之间直接相邻或者间接相邻，可分为情形C-1和情形C-2；或者，第一SSB为第一CD-SSB，第二SSB为第二non CD-SBB，根据第一CD-SSB和第二non CD-SBB之间直接相邻或者间接相邻，也可分为情形C-1和情形C-2。
情形C-1，CD-SBB和non CD-SSB之间的PCI碰撞。
具体可为：第一CD-SSB与第二non CD-SSB直接相邻、且第一CD-SSB对应的频点和/或MTC和/或SCS和/或SSB occasion与第二non CD-SSB对应的频点和/或MTC和/或SCS和/或SSB occasion分别相同、且第一CD-SSB对应的第一PCI与第二non CD-SSB对应的第二PCI相同；
或者，第一non CD-SSB与第二CD-SSB直接相邻、且第一non CD-SSB对应的频点和/或MTC和/或SCS和/或SSB occasion与第二CD-SSB对应的频点和/或MTC和/或SCS和/或SSB occasion分别相同、且第一non CD-SSB对应的第一PCI与第二CD-SSB对应的第二PCI相同。
情形C-2，CD-SBB和non CD-SSB之间的PCI混淆。
具体可为：第一CD-SSB与第二non CD-SSB间接相邻、且第一CD-SSB对应的频点和/或MTC和/或SCS和/或SSB occasion与第二non CD-SSB对应的频点和/或MTC和/或SCS和/或SSB occasion分别相同、且第一CD-SSB对应的第一PCI与第二non CD-SSB对应的第二PCI相同；
或者，第一non CD-SSB与第二CD-SSB间接相邻、且第一non CD-SSB对应的频点和/或MTC和/或SCS和/或SSB occasion与第二CD-SSB对应的频点和/或MTC和/或SCS和/或SSB occasion分别相同、且第一non CD-SSB对应的第一PCI与第二CD-SSB对应的第二PCI相同。
在第一SSB和第二SSB满足上述三种情形中的任一种情形时，确定第一SSB对应的第一PCI和第二SSB对应的第二PCI发生冲突、且可确定出发生的是PCI碰撞还是PCI混淆。当出现PCI碰撞时，终端可能会检测到第一SBB和第二SSB中的一个，终端接入检测到的SSB，但是可能会受到另一个SSB较大的干扰，或者终端可能将无法接入到这个两个干扰的第一SBB和第二SSB中的任何一个，造成掉话。当出现PCI混淆时，如果终端请求切换到第一SSB，但是接入网设备不知道哪个是第一SSB，可能出现接入网设备仅知道其中一个SSB，有可能使终端向错误的SSB进行切换，从而造成终端切换失败。
如图3-图6所示，为本申请提供的不同的通信方法流程示意图，均可用于解决背景技术中的问题。如图3-图6所示的通信方法中，第一接入网设备可以为上述图1中的接入网设备101、第二接入网设备可为上述图1中的接入网设备102。基于上述场景一：第一接入网设备可为上述图1a中的gNB101a、第二接入网设备可为上述图1a中的gNB102a。第一接入网设备可为上述图1b中的LTE eNB101b、第二接入网设备可为上述图1b中的LTE eNB102b。基于上述场景二：第一接入网设备可为主节点，第二接入网设备为辅节点。基于上述场景三：第一接入网设备可为CU，第二接入网设备可为DU，CU和DU可以属于同一基站，也可以属于不同的基站。
如图3所示，为本申请提供的一种通信方法流程示意图。该方法包括以下步骤：
步骤301，第一接入网设备确定第一小区的第一PCI和第二小区的第二PCI发生冲突。
其中，第一PCI是第一小区的，第二PCI是第二小区的，第一PCI对应第一SSB，第二PCI对应第二SSB，第一接入网设备可基于上述对PCI之间冲突的定义，确定第一PCI和第二PCI发生冲突，此处不再赘述。
在一种可能的实现方式中，第一小区和第二小区分别与接入网设备之间的关系可分如下四种可能的情形。
情形一，第一小区属于第一接入网设备，且第二小区属于第二接入网设备。例如，第一接入网设备是主节点，第一小区是主节点管理的小区，且第二接入网设备是辅节点，第二小区是辅节点管理的小区。又例如，第一接入网设备和第二接入网设备是不同的节点(如基站，如图1a所示的gNB101a和gNB101b)，且第一小区与第二小区分别由不同的节点管理，其中不同的节点可均是主节点，也可均是辅节点。又例如，第一接入网设备和第二接入网设备是不同的集中式单元(central unit，CU)，且第一小区与第二小区分别由不同的CU管理。
情形二，第一小区和第二小区都属于第一接入网设备。例如，第一接入网设备是节点1，第二接入网设备是节点2，第一小区和第二小区都是节点1下的小区，其中，节点1和节点2可以均是基站。又例如，第一接入网设备为主节点，第二接入网设备是辅节点，且第一小区和第二小区是该主节点管理的不同小区。
情形三，第一小区和第二小区都属于第二接入网设备。例如，第一接入网设备是节点1，第二接入网设备是节点2，第一小区和第二小区都是节点2下的小区，其中，节点1和节点2可以均是基站。又例如，第一接入网设备是CU，第二接入网设备是分布式单元(distributed unit，DU)，且第一小区和第二小区是该DU管理的不同小区。又例如，第一接入网设备是主节点，第二接入网设备是辅节点，且第一小区和第二小区是该辅节点管理的不同小区。
情形四，第一小区属于第二接入网设备，且第二小区属于第三接入网设备，其中，第 二接入网设备和第三接入网设备都由第一接入网设备管理。例如，第一接入网设备是CU，第二接入网设备与第三接入网设备是该CU管理的不同DU，则第一小区与第二小区分属不同的DU管理。
本申请中，第一接入网设备可获取第一PCI和第二PCI。
基于上述情形一，第一接入网设备可以从本地获取第一PCI，第一接入网设备从第二接入网设备获取第二PCI。
基于上述情形二，第一接入网设备可以从本地获取第一PCI和第二PCI。
基于上述情形三，第一接入网设备可以从第二接入网设备获取第一PCI和第二PCI。
基于上述情形四，第一接入网设备可以从第二接入网设备获取第一PCI，且从第三接入网设备获取第二PCI。
在一种可能的实现方式中，第二SSB对应的第二PCI可以是第一接入网设备获得第二小区对应的SSB信息(简称为第二SSB信息)中携带的。
可选地，第二小区对应的SSB信息还可包括第二SSB对应的频点、第二SSB的类型、第二SSB对应的MTC、第二SSB对应的SCS和第二SSB对应的时域中的一种或多种。
在一种可能的实现方式中，第二小区对应的SSB信息包括第二SSB对应的第二PCI。
在另一种可能的实现方式中，第二小区对应的SSB信息包括第二SSB对应的第二PCI，以及，以下信息中的一个或多个：第二SSB对应的频点、第二SSB的类型、第二SSB对应的MTC、第二SSB对应的SCS和第二SSB对应的时域，本申请对此不做限定。比如，第二小区对应的SSB信息包括第二SSB对应的第二PCI和第二SSB对应的频点。再比如，第二小区对应的SSB信息包括第二SSB对应的第二PCI、第二SSB对应的频点和第二SSB的类型，其中，第二SSB的类型为CD-SBB或non CD-SSB。再比如，第二小区对应的SSB信息可包括第二SSB对应的第二PCI、第二SSB对应的频点、第二SSB的类型和第二SSB对应的MTC。再比如，第二小区对应的SSB信息可包括第二SSB对应的第二PCI、第二SSB对应的频点、第二SSB的类型、第二SSB对应的SCS。再比如，第二小区对应的SSB信息可包括第二SSB对应的第二PCI、第二SSB对应的频点、第二SSB的类型、第二SSB对应的SCS、第二SSB对应的时域，或其它可能的组合方式，此处不再一一罗列。
步骤302，第一接入网设备向第二接入网设备和/或OAM发送指示信息，指示信息用于指示第一PCI和第二PCI发生冲突。
相应地，第二接入网设备和/或OAM接收指示信息。
在一种可能的实现方式中，指示信息包括第二PCI、第二SSB对应的频点、第二SSB的类型、第二SSB对应的MTC、第二SSB对应的SCS、第二SSB对应的时域以及第二SSB对应的NCGI中的一种或多种。
示例性地，指示信息中包括第二PCI；或者、指示信息可包括第二PCI和第二SSB的类型；或者，指示信息可包括第二SSB的类型和第二SSB对应的频点；或者，指示信息可包括第二PCI和第二SSB对应的频点；或者，指示信息可包括第二PCI、第二SSB的类型和第二SSB对应的频点；或者，指示信息可包括第二PCI、第二SSB的类型和第二SSB对应的MTC；或者，指示信息可包括第二PCI、第二SSB的类型和第二SSB对应的SCS；或者，指示信息可包括第二PCI、第二SSB的类型和第二SSB对应的时域，或其它可能的组合方式，此处不再一一罗列。
可选的，在上述指示信息的所有可能实现方式中，指示信息中还可包括NCGI。
此处，指示信息可以是一个索引，该索引可指示出第一PCI和第二PCI发生冲突；或者，该指示信息也可以是一个指示字符，该指示字符可指示出第一PCI和第二PCI发生冲突。指示信息的具体形式也可以的形式，本申请对此不做下限定。
结合上述场景一中的图1a，若gNB101a为第一接入网设备，gNB102a为第二接入网设备，可以是gNB101a通过Xn-C接口向gNB102a发送指示信息。相应地，gNB102a通过Xn-C接口接收来自于gNB101a的指示信息。
结合上述场景一中的图1b，若LTE eNB101b为第一接入网设备，LTE eNB102b为第二接入网设备，可以是LTE eNB101b通过X2-C接口向LTE eNB102b发送指示信息。相应地，LTE eNB102b通过X2-C接口接收来自于LTE eNB101b的指示信息。
结合上述场景二中的网络架构一，LTE eNB101c为第一接入网设备，NR gNB102c为第二接入网设备，LTE eNB101c可通过X2-C接口向NR gNB102c发送指示信息。相应地，NR gNB102c可通过X2-C接口从LTE eNB101c接收指示信息。结合场景二中的情形1的指示信息的收发可参见结合场景二中的网络架构一的介绍，此处不再赘述。结合上述场景二中的网络架构二中的情形2.1，NR gNB101d为第一接入网设备，ng-eNB102d为第二接入网设备，NR gNB101d可通过Xn-C接口向ng-eNB102d发送指示信息。相应地，ng-eNB102d可通过Xn-C接口接收来自NR gNB101d的指示信息。结合上述场景二中的网络架构二中的情形2.2，ng-eNB101f为第一接入网设备，NR gNB102f为第二接入网设备，ng-eNB101f可通过Xn-C接口向NR gNB102f发送指示信息。相应地，NR gNB102f可通过Xn-C接口接收来自ng-eNB101f的指示信息。
结合上述场景三，在CU-DU场景下，可包括如下三种可能的实现方式，如下三种可能的实现方式均为可选地步骤。也可以理解为，结合上述场景三，第一接入网设备向第二接入网设备和/或OAM发指示信息为可选步骤。
结合上述场景三，一种可能的实现方式中，CU为第一接入网设备，DU为第二接入网设备。针对上述场景三中的情形一，gNB-1中的CU101e可通过F1接口向gNB-1中的DU102e发送指示信息。相应地，gNB-1中的DU102e可通过F1接口接收来自gNB-1中的CU101e的指示信息。针对上述场景三中的情形二，gNB-1中的CU101e可先通过Xn-C接口向gNB-2中的CU101e发送指示信息，之后gNB-2中的CU101e通过F1接口向gNB-2中的DU102e发送指示信息。相应地，gNB-2中的DU102e接收来自gNB-1中的CU101e的指示信息。
结合上述场景三，另一种可能的实现方式中，CU为第二接入网设备，DU为第一接入网设备。在该实现方式中，DU可向OAM或者CU发送指示信息。相应地，OAM或者CU接收来自DU的指示信息。
结合上述场景三，又一种可能的实现方式中，第一接入网设备和第二接入网设备均为CU，针对上述场景三中的情形三，gNB-1中的CU101e可通过Xn-C接口向gNB-2中的CU101e发送指示信息，该实现方式与上述场景二中的Ng-eNB102d与NR gNB101d的过程相同。
在上述三种场景中，指示信息可以通过X2-C或Xn-C或F1的接口现有消息发送，或者，也可通过新定义的消息发送，本申请不做限定。
从上述步骤301至步骤302可以看出，第一接入网设备可以根据第一小区对应的第一PCI、第二小区对应的第二PCI来确定第一PCI和第二PCI发生冲突，其中，第一PCI对 应第一SSB、第二PCI对应第二SSB。如此，可实现NR系统中SSB对应的PCI冲突的检测，有助于消除或减小NR网络中PCI冲突，从而可提高终端切换的成功率，进而可降低终端的掉话率。且由于第一小区和第二小区可以分属于不同的接入网设备或者属于同一个接入网设备管理，本申请提供的通信方法适用于多种组网场景，灵活度高。
在上述步骤301之前，一种可能的实现方式中，第一小区属于所述第一接入网设备且所述第二小区属于所述第二接入网设备，第一接入网设备可以通过与第二接入网设备之间的接口获取第二小区对应的SSB信息；或者，第一接入网设备可以通过与终端设备之间的空口获取第二小区对应的SSB的信息。第二小区对应的SSB信息可包括第二SSB对应的PCI、第二SSB对应的频点、第二SSBSSB对应的MTC、第二SSB对应的SCS、第二SSB对应的类型(例如CD-SSB、non CD-SSB)、第二SSB对应的时域等的一种或多种。
示例性地，第二接入网设备可向第一接入网设备发送第二小区对应的SSB信息，可以是第二接入网设备直接向第一接入网设备发送第二小区对应的SSB信息，也可以是第二接入网设备向中继设备发送第二小区对应的SSB信息，中继设备将第二小区对应的SSB信息透传至第一接入网设备。
相应地，第一接入网设备可接收来自于第二接入网设备发送的第二小区对应的SSB信息。一种可能的实现方式中，第一接入网设备可基于接收的第二小区对应的SSB信息和第一小区对应的SSB信息，确定第一PCI和第二PCI是否发生冲突，可以理解的是，上述步骤301是在获取到第二小区对应的SSB信息后执行的。
结合上述场景一，第二接入网设备可通过Xn-C接口向第一接入网设备发送第二小区对应的SSB信息。相应地，第一接入网设备可通过Xn-C接口接收来自第二小区对应的SSB信息。
结合上述场景二中的网络架构一，第二接入网设备可通过X2-C接口向第一接入网设备发送第二小区对应的SSB信息。相应地，第一接入网设备可通过X2-C接口接收来自第二小区对应的SSB信息。结合上述场景二中的网络架构二的两种情形，第二接入网设备可通过Xn-C接口向第一接入网设备发送第二小区对应的SSB信息。相应地，第一接入网设备可通过Xn-C接口接收来自第二小区对应的SSB信息。
结合上述场景三，在CU为第一接入网设备，DU为第二接入网设备的情况下。示例性地，结合上述场景三中的情形一，gNB-1中的DU102e可通过F1接口向gNB-1中的CU101e发送SSB信息。相应地，gNB-1中的CU101e可通过F1接口接收来自gNB-1中的DU102e对应的SSB信息。结合上述场景三中的情形二，gNB-2中的DU102e可先通过F1接口向gNB-2中的CU101e发送gNB-2中的DU102e对应的SSB信息，之后gNB-2中的CU101e通过Xn-C接口向gNB-1中的CU101e发送接收到的gNB-2中的DU102e对应的SSB信息。相应地，gNB-1中的CU101e接收来自gNB-2中的DU102e对应的SSB信息。
示例性地,第一接入网设备为CU1，第二接入网设备为DU1，DU1是由CU1管理。若第一小区是DU1下的cell1，假设CU1确定出cell1的直接邻区是cell2，间接邻区是cell3和cell4，间接邻区cell3和cell4就是cell2的直接邻区，此时CU1会把cell2的PCI和对应的SSB信息、cell3的PCI和对应的SSB信息、cell4的PCI和对应的SSB信息发送给DU1，DU1来确定cell1的PCI与cell2的PCI、cell3的PCI、cell4的PCI之间是否发生冲突。
可选的，DU1可提前已经获知cell1的直接邻区是cell2，DU1向CU1发送cell2的标识，请求获取cell2的邻区，也即cell1的间接邻区，CU1向DU1返回cell2的PCI和对应 的SSB信息、cell3的PCI和对应的SSB信息、cell4的PCI和对应的SSB信息。
需要说明的是，第一小区的相邻小区(直接相邻的小区或间接相邻的小区)可以是由第一接入网设备确定。一种可能的实现方式中，第二接入网设备可向第一接入设备请求获取第一小区的相邻小区的PCI和对应的SSB信息。另一种可能的实现方式中，第一接入网设备可主动向第二接入网设备发送第一小区的相邻小区的PCI和对应的SSB信息。
结合上述场景三，在CU为第二接入网设备，DU为第一接入网设备的情况下，结合上述场景三中的情形一，gNB-1中的CU101e可通过F1接口向gNB-1中的DU102e发送gNB-1中的CU101e对应的SSB信息。相应地，gNB-1中的DU102e可通过F1接口接收来自gNB-1中的CU101e对应的SSB信息。结合上述场景三中的情形二，gNB-1中的CU101e通过Xn-C接口向gNB-2中的CU101e发送gNB-1中的CU101e对应的SSB信息，gNB-2中的CU101e通过F1接口向gNB-2中的DU102e发送接收gNB-1中的CU101e对应的SSB信息。
结合上述场景三，在另一种可能的实现方式中，第一接入网设备和第二接入网设备均为CU，针对上述场景三中的情形三，gNB-2中的CU101e可通过Xn-C接口向gNB-1中的CU101e发送gNB-2中的CU101e对应的SSB信息，该实现方式与上述场景二中的Ng-eNB102d与NR gNB101d的过程相同。
在上述步骤301之前，另一种可能的实现方式中，所述第一小区和所述第二小区都属于所述第一接入网设备，第一接入网设备可从本地直接获取配置的第一小区对应的SSB信息和第二小区对应的SSB信息。
在上述步骤301之前，另一种可能的实现方式中，所述第一小区和所述第二小区都属于所述第二接入网入设备，第一接入网设备可从第二接入网设备获取第一小区对应的SSB信息和第二小区对应的SSB信息。第一接入网设备可以通过与第二接入网设备之间的接口获取第一小区对应的SSB信息和第二小区对应的SSB信息；或者，第一接入网设备可以通过与终端设备之间的空口获取第一小区对应的SSB信息和第二小区对应的SSB的信息。结合上述三种场景的描述，可参见上述内容，此处不再赘述。
在上述步骤301之前，又一种可能的实现方式中，所述第一小区属于所述第二接入网设备，且所述第二小区属于第三接入网设备，其中，所述第二接入网设备和所述第三接入网设备都由所述第一接入网设备管理。结合上述场景三中的情形二，gNB-2中的DU102e可为第二接入网设备，gNB-1中的DU102e可为第三接入网设备，第一接入网设备可为gNB-1中CU101e。gNB-2中的DU102e可先通过F1接口向gNB-2中的CU101e发送gNB-2中的DU102e对应的SSB信息，之后gNB-2中的CU101e通过Xn-C接口向gNB-1中的CU101e发送接收到的gNB-2中的DU102e对应的SSB信息，gNB-1中的DU102e可先通过F1接口向gNB-1中的CU101e发送gNB-1中的DU102e对应的SSB信息。相应地，gNB-1中的CU101e接收来自gNB-2中的DU102e对应的SSB信息。
基于上述确定出的第一PCI和第二PCI发生冲突，本申请提供如下三种实现方式来解决第一PCI与第二PCI冲突的问题。三种实现方式可单独实现，也可以组成实现，本申请对此不做限定。
实现方式一，第二接入网设备根据指示信息修改第二PCI。
基于该实现方式一，如图4所示，为本申请提供的另一种通信方法流程示意图。该方法包括以下步骤。
步骤401，第一接入网设备确定第一PCI和第二PCI发生冲突。
该步骤401与上述图3实施例的步骤301相同，可参考前述描述。
步骤402，第一接入网设备向第二接入网设备发送指示信息。
此处，指示信息可与述图3实施例的步骤302中的指示信息相同，可参考前述描述。进一步，第一接入网设备向第二接入网设备发送指示信息的接口可参见上述步骤302中结合具体场景的介绍，此处不再赘述。
步骤403，第二接入网设备根据指示信息修改第二PCI。
一种可能的实现方式中，第二接入网设备根据指示信息确定第二SSB，并修改第二SSB对应的第二PCI。比如CD-SSB与non CD-SSB对应有相同的PCI时，第二接入网设备可根据指示信息中包括第二PCI和第二SSB的类型，确定需要修改CD-SSB对应的PCI，还是需要修改non CD-SSB对应的PCI。再比如，由于各SSB对应的频点不同，第二接入网设备可根据指示信息包括的第二PCI和第二SSB对应的频点，确定出需要修改第二SSB对应的PCI。再比如，第二接入网设备也可根据指示信息包括的第二SSB对应的频点、第二SSB的类型和第二PCI确定需要修改第二SSB对应的PCI。
其中，修改PCI需要满足两个要求：第一，不冲突(collision-free)，即任何两个相邻的同频的SSB都不能使用同一个PCI。第二，不混淆(confusion-free)，即同一个SSB的所有相邻的SSB中不能有任何两个同频的SSB使用相同的PCI。对于同一个接入网设备下的SSB，可将这些SSB作为特殊的直接相邻的SSB对待，即同一接入网设备下的任何两个或多个SSB的PCI也需要满足上述不混淆和不冲突的要求。
示例性地，第二接入网设备中维护有一个可用的PCI集，第二接入网设备可以使用PCI集中任意一个PCI。第二接入网设备根据指示信息以及PCI修改需要满足的上述两个要求，尝试将第二PCI修改为PCI集中可用的一个PCI，即选取一个可用的PCI替换第二PCI，如此，不需要第二接入网设备向OAM索要可用的PCI，有助于提高修改冲突PCI的效率。
步骤404，第二接入网设备向第一接入网设备发送修改后的第二PCI。
该步骤404为可选步骤。通过该步骤可以实现第一接入网设备及时更新第二SSB对应的PCI，以便于在终端切换时，为终端选择合适的SSB。
此处，第二接入网设备可通过接收指示信息的接口发送第二SSB对应的修改后的PCI。第二SSB对应的修改后的PCI也可以是新定义的消息，本申请不做限定。
上述图4所示的通信方法可以是上述图3所示的通信方法中的一种可能的示例。
实现方式二，OAM根据指示信息修改第一PCI或第二PCI。
基于该实现方式二，如图5所示，为本申请提供的另一种通信方法流程示意图。该方法包括以下步骤：
步骤501，第一接入网设备确定第一PCI和第二PCI发生冲突。
该步骤501与上述图3实施例的步骤301相同，可参考前述描述。
步骤502，第一接入网设备向第二接入网设备发送指示信息。
该指示信息可与述图3实施例的步骤302中的指示信息相同，可参考前述描述。进一步，第一接入网设备向第二接入网设备发送指示信息的接口可参见上述步骤302中结合具体场景的介绍，此处不再赘述。
步骤503，第二接入网设备向OAM发送指示信息。
在一种可能的实现方式中，第二接入网设备向OAM发送指示信息，指示信息中除包 括上述步骤302中的内容，还可携带第二SSB所属的小区标识和/或第二接入网设备的标识。
步骤504，OAM根据指示信息修改第二PCI。
此处，OAM收到指示信息后，为第二SSB重新分配一个新的PCI，OAM为第二SSB分配新的PCI也需满足上述步骤403中的修改PCI需要满足的两个要求。
步骤505，OAM将修改后的PCI发送至第二接入网设备。
步骤506，第二接入网设备向第一接入网设备发送修改后的PCI。
该步骤为可选步骤，详细介绍可参见上述步骤404，此处不再赘述。
基于该实现方式二，如图6所示，为本申请提供的又一种通信方法流程示意图。该方法包括以下步骤：
步骤601，第一接入网设备确定第一PCI和第二PCI发生冲突。
该步骤601与上述图3实施例的步骤301相同，可参考前述描述。
步骤602，第一接入网设备向OAM发指示信息。
第一种可能的实现方式中，指示信息可在上述图3实施例的步骤302中的指示信息中再携带第二SSB所属的小区标识和/或第二SSB所属的小区所属的第二接入网设备的标识。
第二种可能的实现方式中，指示信息可还包括第一小区对应的SSB信息。可选地，第一小区对应的SSB信息可以包括：第一PCI和第一SSB的类型；或者，第一PCI和第一SSB对应的频点；或者，第一PCI、第一SSB的类型和第一SSB对应的频点；或者，第一PCI、第一SSB的类型和第一SSB对应的MTC；或者，指示信息可包括第一PCI、第一SSB的类型和第一SSB对应的SCS；或者，第一小区对应的SSB信息可包括第一PCI、第一SSB的类型和第一SSB对应的时域。可选地，指示信息还可携带第一SSB所属的小区标识和/或第一接入网设备的标识和/或第一SSB对应的NCGI。
第三种可能的实现方式中，指示信息可包括第一小区对应的SSB信息和第二小区对应的SSB信息。可选地，指示信息也可以包括第一PCI、第一SSB对应的频点、第二PCI和第二SSB对应的频点；或者，指示信息也可包括第一PCI、第一SSB对应的频点、第二PCI、第二SSB的类型；或者，指示信息也可包括第一PCI、第一SSB对应的频点、第二PCI、第二SSB的类型和第二SSB对应的频点；或者，指示信息也可包括第一PCI、第一SSB的类型、第二PCI和第二SSB的类型；或者指示信息也可包括第一PCI、第一SSB的类型、第二PCI和第二SSB对应的频点；或者，指示信息也可包括第一PCI、第一SSB的类型、第二PCI、第二SSB的类型和第二SSB对应的频点；或者，指示信息也可以包括第一PCI、第一SSB的类型、第一SSB对应的频点、第二PCI和第二SSB对应的频点；或者指示信息也可包括第一PCI、第一SSB的类型、第一SSB对应的频点、第二PCI、第二SSB的类型；或者，指示信息也可以包括第一PCI、第一SSB的类型、第一SSB对应的频点、第二PCI、第二SSB的类型和第二SSB对应的频点；或者指示信息也可以是第一PCI、第一SSB的类型、第一SSB对应的MTC、第一SSB对应的SCS、第一SSB对应的时域以及第一SSB对应的NCGI中的一种或多种、与第二PCI、第二SSB的类型、第二SSB对应的MTC、第二SSB对应的SCS、第二SSB对应的时域以及第二SSB对应的NCGI中的一种或多种的其他可能的组合方式，本申请对此不做限定。可选地，指示信息还可包括第二SSB所属的小区标识和/或第二接入网设备的标识、以及第一SSB所属的小区标识和/或第一接入网设备的标识。
步骤603，OAM根据指示信息修改第一PCI或第二PCI。
示例性地，若指示信息为上述步骤602中第一种可能的实现方式，则OAM修改第二PCI，之后执行步骤604；若指示信息为上述步骤602中第二种可能的实现方式，则OAM修改第一PCI，之后执行步骤605；若指示信息为上述步骤602中第三种可能的实现方式，则OAM可以修改第一PCI也可以修改第二PCI，此处不做具体限定，若是修改了第一PCI，则之后也执行步骤604，若是修改第二PCI，则之后执行步骤605。
其中，OAM修改PCI的过程可参见上述步骤503中介绍，此处不再赘述。
步骤604，OAM向第一接入网设备发送修改后的第一PCI和/或修改后的第二PCI。
可选的，第一接入网设备向第二接入网设备发送修改后的第二PCI。
可选的，OAM直接向第二接入网设备发送修改后的第二PCI。
实现方式三，第一接入网设备修改第一PCI和/或第二PCI。
如图7所示，为本申请提供的又一种通信方法流程示意图。该方法包括以下步骤：
步骤701，第一接入网设备确定第一PCI和第二PCI发生冲突。
该步骤701与上述图3实施例的步骤301相同，可参考前述描述。
步骤702，第一接入网设备修改第一PCI。
在一种可能的实现方式中，第一接入网设备可获取第一PCI的范围信息和/或第二PCI的范围信息，可以根据第一PCI的范围信息和/或第二PCI范围信息来修改第一PCI和/或第二PCI，其中，第一PCI的范围信息为第一小区可用的PCI范围，第二PCI的范围信息为第二小区可用的PCI范围。如此，以提高第一接入网设备修改PCI的效率。
此处，第一接入网设备可修改第一PCI，也可修改第二PCI，或者也可修改第一PCI和第二PCI。第一接入网设备修改第一PCI，指的是第一接入网设备将第一SSB对应的第一PCI修改为与第二PCI不冲突的PCI，具体可以是：第一接入网设备可根据第一PCI的范围信息修改第一PCI。
示例性地，若第一PCI的范围信息为[PCI＝1，PCI＝90]，则第一接入网设备修改第一PCI需在[PCI＝1，PCI＝90]的范围内选择一个PCI。第一接入网设备修改第二PCI，指第一接入网设备将第二PCI修改为与第一PCI不冲突的PCI，具体可以是：第一接入网设备可根据第二PCI的范围修改第二PCI。示例性地，若第二PCI的范围信息为[PCI＝100，PCI＝110]，则第一接入网设备修改第一PCI需在[PCI＝100，PCI＝110]的范围内选择一个PCI。
在一种可能的实现方式中，第一接入网设备可以向第二接入网设备发送指示信息，或者也可以向OAM发送指示信息，或者也可以向第二接入网设备和OAM均发送指示信息，或者也可以既不向第二接入网设备也不向OAM发送指示信息，本申请对此不做具体限定。
在一种可能的实现方式中，第一接入网设备可将修改后的第一PCI发送至第二接入网设备，或者，第一接入网设备可将修改后的第二PCI发送至第二接入网设备。修改后的第一PCI或修改后的第二PCI的发送可以是通过第一接入网设备向第二接入网设备发送的指示信息中携带，或者也可以在一个新定义的消息，本申请不做限定。
需要说明的是，指示信息可用于指示第一PCI和第二PCI发生冲突。例如，可以直接指示发生冲突的第一PCI和第二PCI。也可以用于指示第一接入网设备修改后的PCI，修改后的PCI可以是修改第一SSB对应的第一PCI后的PCI，也可以是修改第二SSB对应的第二PCI后的PCI。
或者也可以指示第一接入网设备已解决第一PCI和第二PCI冲突，本申请对此不作具 体限定。
针对上述三种实现方式，若发生冲突的第一PCI和第二PCI是上述情形C中的CD-SBB和non CD-SSB之间的PCI冲突，则可优先选择修改non CD-SSB对应的PCI，以实现第一PCI和第二PCI不冲突。由于终端在进行小区选择时通常是基于CD-SSB的同步信号接入接入网设备的，non CD-SSB一般作为辅载波存在，一般用于进行测量，因此，优先选择修改non CD-SSB对终端接入的影响最小。
如图8所示，为本申请提供的另一种通信方法流程示意图。该方法包括以下步骤：
步骤801，第一接入网设备确定第一PCI和第二PCI发生冲突。
步骤802，第一接入网设备获取第一PCI的范围信息和/或第二PCI的范围信息。
其中，第一PCI的范围信息为第一小区可用的PCI范围，第二PCI的范围信息为第二小区可用的PCI范围。
在该步骤802中，第一接入网设备获取第一PCI的范围信息和/或第二PCI的范围信息可分如下四种情形。
情形一，第一小区属于第一接入网设备，且第二小区属于第二接入网设备的情况下，第一接入网设备可从本地获取第一PCI的范围信息，第一接入网设备可从第二接入网设备获取第二PCI的范围信息。
在一种可能的实现方式中，第一PCI的范围信息可以是第一接入网设备自己确定的，也可以是第一接入网设备的OAM确定之后，发送给第一接入网设备的。第二PCI的范围信息也可以是第二接入网设备自己确定的，也可以是第二接入网设备的OAM确定之后，发送给第二接入网设备。
情形二，第一小区和第二小区都属于第一接入网设备的情况下，第一接入网设备可以从本地获取第一PCI的范围信息和第二PCI的范围信息。
在一种可能的实现方式中，第一PCI的范围信息和第二PCI的范围信息可以均是第一接入网设备自己确定的，也可以是第一接入网设备的OAM确定之后，发送给第一接入网设备的。
情形三，第一小区和第二小区都属于第二接入网设备的情况下，第一接入网设备可以从第二接入网设备获取第一PCI的范围信息和第二PCI的范围信息。
在一种可能的实现方式中，第一PCI的范围信息和第二PCI的范围信息可以是第二接入网设备自己确定的，也可以是第二接入网设备的OAM确定之后，发送给第二接入网设备的。
情形四，第一小区属于第二接入网设备，且第二小区属于第三接入网设备的情况下，第一接入网设备可以从第二接入网设备获取第一PCI的范围信息，且从第三接入网设备获取第二PCI的范围信息，其中，第二接入网设备和第三接入网设备都由第一接入网设备管理。
在一种可能的实现方式中，第一PCI的范围信息可以是第二接入网设备自己确定的，也可以是第二接入网设备的OAM确定之后，发送给第二接入网设备的。第二PCI的范围信息也可以是第三接入网设备自己确定的，也可以是第三接入网设备的OAM确定之后，发送给第三接入网设备。
在一种可能的实现方式中，第一接入网设备下的各小区可分别对应一个PCI的范围信息，各小区分别对应的PCI的范围信息可以相同，也可以不相同。第二接入网设备下的各 小区也可分别对应一个PCI的范围信息，各小区分别对应的PCI的范围信息可以相同，也可以不相同。
在另一种可能的实现方式中，第一接入网设备可对应一个PCI的范围信息，第一接入网设备下的各个小区均适用该PCI的范围信息。第二接入网设备也对应一个PCI范围信息，第二接入网设备下的各个小区均适用该PCI的范围信息。
上述步骤801和上述步骤802没有先后顺序，可先执行步骤801，也可先执行步骤802，本申请不做限定。
步骤803，第一接入网设备可根据第一PCI的范围信息修改第一PCI，可根据第二PCI的范围信息修改第二PCI。
从上述步骤801至步骤803可以看出，第一接入网设备根据PCI的范围信息修改发生冲突的PCI，有助于提高第二接入网设备修改PCI的效率。
在一种可能的实现方式中，第一接入网设备可为CU，第二接入网设备可为DU。
基于上述内容和相同构思，本申请提供一种通信装置900，用于执行上述方法中的第一接入网设备中的任一个方案，或者用于执行上述方法中第二接入网设备中的任一方案。图9示例性示出了本申请提供的一种通信装置的结构示意图，如图9所示，通信装置900包括处理器901。可选地，还可包括收发器902和存储器903；其中，处理器901、收发器902和存储器903通过总线相互连接。该通信装置900也可以上述图1中的接入网设备101或者接入网设备102，也可以是上述图1a中的gNB101a或者gNB102a，也可以是上述图1b中的LTE eNB101b或LTE eNB102b，也可以是上述图1c中的LTE eNB101c或NR gNB102c，也可以是上述图1d中的ng-eNB102d或NR gNB101d，也可以是上述图1e中的CU101e或DU102e，也可以是上述图1f中的ng-eNB101f或NR gNB102f。
存储器903可以包括易失性存储器(volatile memory)，例如随机存取存储器(random-access memory，RAM)；存储器也可以包括非易失性存储器(non-volatile memory)，例如快闪存储器(flash memory)，硬盘(hard disk drive，HDD)或固态硬盘(solid-state drive，SSD)；存储器903还可以包括上述种类的存储器的组合。
收发器902，用于该通信装置与其它通信装置之间进行通信。例如，该通信装置可通过收发器902与终端设备、或者接入网设备进行通信。可选地，收发器902可以为通信接口，通信接口可实现上述实施例中X2接口、Xn接口或F1接口的功能。
处理器901可以是中央处理器(central processing unit，CPU)，网络处理器(network processor，NP)或者CPU和NP的组合。处理器901还可以进一步包括硬件芯片。上述硬件芯片可以是专用集成电路(application-specific integrated circuit，ASIC)，可编程逻辑器件(programmable logic device，PLD)或其组合。上述PLD可以是复杂可编程逻辑器件(complex programmable logic device，CPLD)，现场可编程逻辑门阵列(field-programmable gate array，FPGA)，通用阵列逻辑(generic array logic,GAL)或其任意组合。
可选地，存储器903还可以用于存储程序指令，处理器901调用该存储器903中存储的程序指令，可以执行上述方案中所示实施例中的一个或多个步骤，或其中可选的实施方式，使得通信装置900实现上述方法中通信设备的功能。
在一种应用中，该装置可为上述任一实施例中的第一接入网设备，还可以为第一接入网设备中的部件(例如芯片或者电路)。可以执行上述图3、图4、图6、图7和图8中第一接入网设备对应执行的方案。
具体地，处理器901用于根据执行存储器存储的指令，并控制收发器902进行信号接收和信号发送，当处理器901执行存储器存储的指令时，通信装置800中的处理器901用于确定第一小区的PCI和第二小区的第二PCI发生冲突，其中，第一PCI对应第一SSB，第二PCI对应第二SSB；收发器902，用于向第二接入网设备发送指示信息，指示信息用于指示第一PCI和第二PCI发生冲突。
在一种可能的实现方式中，收发器902还用于：获取所述第一小区对应的SSB信息和所述第二小区对应的SSB信息，所述第一小区对应的SSB信息包括所述第一PCI，所述第二小区对应的SSB信息包括所述第二PCI。
在一种可能的实现方式中，所述第一小区对应的SSB信息还包括第一SSB对应的频点，所述第二小区对应的SSB信息还包括第二SSB对应的频点；处理器901具体用于：确定第一SSB和第二SSB相邻、第一SSB对应的频点和第二SSB对应的频点相同、且第一PCI和第二PCI相同时，确定第一PCI和第二PCI发生冲突。
在一种可能的实现方式中，处理器901具体用于：确定第一SSB和第二SSB直接相邻；或者，确定第一SSB和第二SSB分别与第三SSB直接相邻。
在一种可能的实现方式中，第二小区对应的SSB信息还包括第二SSB的类型，第二SSB的类型为CD-SBB或non CD-SSB。
在一种可能的实现方式中，指示信息包括：第二PCI和第二SSB的类型；或者，第二PCI和第二SSB对应的频点；或者，第二PCI、第二SSB的类型和第二SSB对应的频点。
在一种可能的实现方式中，通信装置用于CU，第二接入网设备可为分布式单元DU，CU对应至少一个DU，CU支持分组数据汇聚协议PDCP的协议栈功能、无线资源控制RRC的协议栈功能和业务数据适应协议SDAP的协议栈功能中的至少一种，DU支持无线链路控制RLC的协议栈功能、媒体访问控制MAC的协议栈功能和物理层PHY的协议栈功能中的至少一种；收发器902具体用于：可通过F1接口向第二接入网设备发送指示信息。
在一种可能的实现方式中，通信装置900用于主节点，第二接入网设备为辅节点，一个主节点对应至少一个辅节点；收发器902具体用于：通过Xn接口向第二接入网设备发送指示信息；或者，通过X2接口向第二接入网设备发送指示信息。
在一种可能的实现方式中，处理器902，还用于：修改第一PCI和/或所述第二PCI。
在另一种应用中，该装置可为上述任一实施例中的第二接入网设备，还可以为第二接入网设备中的部件(例如芯片或者电路)。可以执行上述图4和图6中第二接入网设备对应执行的方案。
具体地，处理器901用于根据执行存储器存储的指令，并控制收发器902进行信号接收和信号发送，当处理器901执行存储器存储的指令时，通信装置900中的处理器901控制收发器902用于从第一接入网设备接收指示信息，指示信息用于指示第一小区的第一物理小区标识PCI和第二小区的第二PCI发生冲突，其中，第一PCI对应第一SSB，第二PCI对应第二SSB；处理器901，用于根据指示信息修改第二PCI。
在一种可能的实现方式中，收发器902还用于：向第一接入网设备发送所述第二小区对应的SSB信息，所述第二小区对应的SSB信息包括所述第二PCI，所述第二小区属于所述第二接入网设备。
在一种可能的实现方式中，处理器901具体用于：根据指示信息确定第二SSB，并修改第二SSB对应的第二PCI。
在一种可能的实现方式中，第一接入网设备为集中式单元CU，通信装置800用于DU，CU对应至少一个DU，CU支持分组数据汇聚协议PDCP的协议栈功能、无线资源控制RRC的协议栈功能和业务数据适应协议SDAP的协议栈功能中的至少一种，DU支持无线链路控制RLC的协议栈功能、媒体访问控制MAC的协议栈功能和物理层PHY的协议栈功能中的至少一种；收发器902具体用于：通过F1接口接收来自第一接入网设备的指示信息。
在一种可能的实现方式中，第一接入网设备为主节点，通信装置900用于辅节点，一个主节点对应至少一个辅节点；收发器902具体用于：通过Xn接口接收来自第一接入网设备的指示信息；或者，通过X2接口接收来自第一接入网设备的指示信息。
基于上述内容和相同构思，本申请提供一种通信装置，用于执行上述方法中的第一接入网设备中的任一个方案，或者用于执行上述方法中第二接入网设备中的任一方案。图10示例性示出了本申请实施例提供的一种通信装置的结构示意图，如图10所示，通信装置1000包括处理单元1001。可选地，还可包括收发单元1002。该示例中的通信装置1000可以是上述内容中的第一接入网设备，可以执行上述图3、图4、图6、图7和图8中第一接入网设备对应执行的方案。也可以是上述内容中的第二接入网设备，可以执行上述图4和图6中第二接入网设备对应执行的方案。该通信装置900也可以上述图1中的接入网设备101或者接入网设备102，也可以是上述图1a中的gNB101a或者gNB102a，也可以是上述图1b中的LTE eNB101b或LTE eNB102b，也可以是上述图1c中的LTE eNB101c或NR gNB102c，也可以是上述图1d中的ng-eNB102d或NR gNB101d，也可以是上述图1e中的DU102e，也可以是上述图1f中的ng-eNB101f或NR gNB102f。
在一种应用中，处理单元1001，用于确定第一物理小区标识PCI和第二PCI发生冲突，其中，第一PCI对应第一SSB，第二PCI对应第二SSB；收发单元1002，用于向第二接入网设备和/或OAM发送指示信息，指示信息用于指示第一PCI和第二PCI发生冲突。
在第二种应用中，收发单元1002，用于从第一接入网设备接收指示信息，指示信息用于指示第一小区的第一PCI和第二小区的第二PCI发生冲突，其中，第一PCI对应第一SSB，第二PCI对应第二SSB；处理单元1001，用于根据指示信息修改第二PCI。
应理解，以上各个通信装置的单元的划分仅仅是一种逻辑功能的划分，实际实现时可以全部或部分集成到一个物理实体上，也可以物理上分开。本申请实施例中，收发单元1002可以由上述图9的收发器902实现，处理单元1001可以由上述图9的处理器901实现。也就是说，本申请实施例中收发单元1002可以执行上述图9的收发器902所执行的方案，本申请实施例中处理单元1001可以执行上述图9的处理器901所执行的方案，其余内容可以参见上述内容，在此不再赘述。如上述图9所示，通信装置900包括的存储器903中可以用于存储该通信装置900包括的处理器901执行方案时的代码，该代码可为通信装置1000出厂时预装的程序/代码。
需要说明的是，图10所示的通信装置，可用于执行的通信方法的具体有益效果，可参考前述方法实施例中的相关描述，这里不再赘述。可以理解的是，本申请实施例中的单元也可以称为模块。上述单元或者模块可以独立存在，也可以集成在一起。
基于上述内容和相同构思，本申请提供一种通信系统。该通信系统可包括第一接入网设备和第二接入网设备，其中，第一接入网设备用于确定第一物理小区标识PCI和第二PCI发生冲突，向第二接入网设备发送指示信息，指示信息用于指示第一PCI和第二PCI发生冲突，第一PCI对应第一接入网设备的第一同步广播信号块SSB，第二PCI对应第二接入 网设备的第二SSB。第二接入网设备用于接收来自第一接入网设备的指示信息，根据指示信息修改第二PCI。
在上述实施例中，可以全部或部分地通过软件、硬件、固件或者其任意组合来实现、当使用软件程序实现时，可以全部或部分地以计算机程序产品的形式实现。计算机程序产品包括一个或多个指令。在计算机上加载和执行计算机程序指令时，全部或部分地产生按照本申请实施例的流程或功能。计算机可以是通用计算机、专用计算机、计算机网络、或者其他可编程装置。指令可以存储在计算机存储介质中，或者从一个计算机存储介质向另一个计算机存储介质传输，例如，指令可以从一个网站站点、计算机、服务器或数据中心通过有线(例如同轴电缆、光纤、数字用户线(DSL))或无线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。计算机存储介质可以是计算机能够存取的任何可用介质或者是包含一个或多个可用介质集成的服务器、数据中心等数据存储设备。可用介质可以是磁性介质，(例如，软盘、硬盘、磁带、磁光盘(MO)等)、光介质(例如，CD、DVD、BD、HVD等)、或者半导体介质(例如ROM、EPROM、EEPROM、非易失性存储器(NAND FLASH)、固态硬盘(Solid State Disk，SSD))等。
本领域内的技术人员应明白，本申请实施例可提供为方法、系统、或计算机程序产品。因此，本申请实施例可采用完全硬件实施例、完全软件实施例、或结合软件和硬件方面的实施例的形式。而且，本申请实施例可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器、CD-ROM、光学存储器等)上实施的计算机程序产品的形式。
本申请实施例是参照根据本申请实施例的方法、设备(系统)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器，使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。
这些指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中，使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品，该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
这些指令也可装载到计算机或其他可编程数据处理设备上，使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理，从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。
显然，本领域的技术人员可以对本申请实施例进行各种改动和变型而不脱离本申请的范围。这样，倘若本申请实施例的这些修改和变型属于本申请权利要求及其等同技术的范围之内，则本申请也意图包含这些改动和变型在内。

Claims (61)

  1. 一种通信方法，其特征在于，包括：
    所述第一接入网设备确定第一小区的第一物理小区标识PCI和第二小区的第二PCI发生冲突，其中，所述第一PCI对应第一同步广播信号块SSB，所述第二PCI对应第二SSB；
    所述第一接入网设备向所述第二接入网设备发送指示信息，所述指示信息用于指示所述第一PCI和所述第二PCI发生冲突。
  2. 如权利要求1所述的方法，其特征在于，
    所述第一小区属于所述第一接入网设备，且所述第二小区属于所述第二接入网设备；
    或者，所述第一小区和所述第二小区都属于所述第一接入网设备；
    或者，所述第一小区和所述第二小区都属于所述第二接入网设备；
    或者，所述第一小区属于所述第二接入网设备，且所述第二小区属于第三接入网设备，其中，所述第二接入网设备和所述第三接入网设备都由所述第一接入网设备管理。
  3. 如权利要求1或2所述的方法，其特征在于，所述方法还包括：
    所述第一接入网设备获取所述第一小区对应的SSB信息和所述第二小区对应的SSB信息，所述第一小区对应的SSB信息包括所述第一PCI，所述第二小区对应的SSB信息包括所述第二PCI。
  4. 如权利要求1-3任一所述的方法，其特征在于，所述第一小区对应的SSB信息还包括第一SSB对应的频点，所述第二小区对应的SSB信息还包括所述第二SSB对应的频点；
    所述第一接入网设备确定所述第一小区的第一PCI和所述第二小区的第二PCI发生冲突，包括：
    所述第一接入网设备确定所述第一SSB和所述第二SSB相邻、所述第一SSB对应的频点和所述第二SSB对应的频点相同、且所述第一PCI和所述第二PCI相同时，确定所述第一PCI和所述第二PCI发生冲突。
  5. 如权利要求4所述的方法，其特征在于，所述第一接入网设备确定所述第一SSB和所述第二SSB相邻，包括：
    所述第一接入网设备确定所述第一SSB和所述第二SSB直接相邻；或者，
    所述第一接入网设备确定所述第一SSB和所述第二SSB分别与第三SSB直接相邻。
  6. 如权利要求4或5所述的方法，其特征在于，所述第二小区对应的SSB信息还包括所述第二SSB的类型，所述第二SSB的类型为小区定义-同步广播信号块CD-SBB或非小区定义-同步广播信号块non CD-SSB。
  7. 如权利要求6所述的方法，其特征在于，所述指示信息包括：
    所述第二PCI和所述第二SSB的类型；或者，
    所述第二PCI和所述第二SSB对应的频点；或者，
    所述第二PCI、所述第二SSB的类型和所述第二SSB对应的频点。
  8. 如权利要求2所述的方法，其特征在于，所述第一接入网设备为集中式单元CU，所述第二接入网设备和所述第三接入网设备为分布式单元DU，所述CU对应至少一个DU，所述CU支持分组数据汇聚协议PDCP的协议栈功能、无线资源控制RRC的协议栈功能和业务数据适应协议SDAP的协议栈功能中的至少一种，所述DU支持无线链路控制RLC 的协议栈功能、媒体访问控制MAC的协议栈功能和物理层PHY的协议栈功能中的至少一种；
    所述第一接入网设备向所述第二接入网设备发送指示信息，包括：
    所述第一接入网设备通过F1接口向所述第二接入网设备发送所述指示信息。
  9. 如权利要求1至7任一项所述的方法，其特征在于，所述第一接入网设备为主节点，所述第二接入网设备为辅节点，一个所述主节点对应至少一个辅节点；
    所述第一接入网设备向所述第二接入网设备发送指示信息，包括：
    所述第一接入网设备通过Xn接口向所述第二接入网设备发送所述指示信息；或者，
    所述第一接入网设备通过X2接口向所述第二接入网设备发送所述指示信息。
  10. 如权利要求1至9任一项所述的方法，其特征在于，所述方法还包括：
    所述第一接入网设备修改所述第一PCI和/或所述第二PCI。
  11. 如权利要求10所述的方法，其特征在于，所述方法还包括：
    所述第一接入网设备获取所述第一PCI的范围信息和/或所述第二PCI的范围信息，所述第一PCI的范围信息为所述第一小区可用的PCI的范围，所述第二PCI的范围信息为所述第二小区可用的PCI范围。
  12. 如权利要求1至3任一所述的方法，其特征在于，所述第一小区对应的SSB信息还包括所述第一SSB对应的测量时间配置MTC、所述第一SSB对应的子载波间隔SCS和所述第一SSB对应的时域；所述第二小区对应的SSB信息还包括所述第二SSB对应的MTC、所述第二SSB对应的SCS和所述第二SSB对应的时域；
    所述第一接入网设备确定所述第一小区的第一PCI和所述第二小区的第二PCI发生冲突，包括：
    所述第一接入网设备确定所述第一SSB和所述第二SSB相邻、所述第一SSB对应的MTC和所述第二SSB对应的MTC相同、所述第一SSB对应的SCS和所述第二SSB对应的SCS相同、且所述第一SSB对应的时域和所述第二SSB对应的时域相同时，确定所述第一PCI和所述第二PCI发生冲突。
  13. 如权利要求1至12任一所述的方法，其特征在于，所述第一小区对应一个所述第一PCI，所述第二小区对应一个所述第二PCI。
  14. 如权利要求1至13任一所述的方法，其特征在于，若所述第一小区包括一个SSB，则所述第一小区的所述第一PCI为所述第一SSB对应的所述第一PCI；
    若所述第一小区包括多个SSB，则所述第一小区的第一PCI为所述多个SSB中的一个SSB对应的所述第一PCI；
    若所述第二小区包括一个SSB，则所述第二小区的所述第二PCI为所述第二SSB对应的所述第二PCI；
    若所述第二小区包括多个SSB，则所述第二小区的所述第二PCI为所述多个SSB中的一个SSB对应的所述第二PCI。
  15. 一种通信方法，其特征在于，包括：
    第二接入网设备接收来自第一接入网设备的指示信息，所述指示信息用于指示第一小区的第一物理小区标识PCI和第二小区的第二PCI发生冲突，其中，所述第一PCI对应所述第一同步广播信号块SSB，所述第二PCI对应第二SSB；
    所述第二接入网设备根据所述指示信息修改所述第二PCI。
  16. 如权利要求15所述的方法，其特征在于，
    所述第一小区属于所述第一接入网设备，且所述第二小区属于所述第二接入网设备；
    或者，所述第一小区和所述第二小区都属于所述第一接入网设备；
    或者，所述第一小区和所述第二小区都属于所述第二接入网设备；
    或者，所述第一小区属于所述第二接入网设备，且所述第二小区属于第三接入网设备，其中，所述第二接入网设备和所述第三接入网设备都由所述第一接入网设备管理。
  17. 如权利要求15或16所述的方法，其特征在于，所述方法还包括：
    所述第二接入网设备向所述第一接入网设备发送所述第二小区对应的SSB信息，所述第二小区对应的SSB信息包括所述第二PCI，所述第二小区属于所述第二接入网设备。
  18. 如权利要求17所述的方法，其特征在于，所述第二接入网设备根据所述指示信息修改所述第二PCI，包括：
    所述第二接入网设备根据所述指示信息确定所述第二SSB，并修改所述第二SSB对应的第二PCI。
  19. 如权利要求18所述的方法，其特征在于，所述第二小区对应的SSB信息还包括所述第二SSB对应的频点和/或所述第二SSB的类型，其中，所述第二SSB的类型为小区定义-同步广播信号块CD-SBB或非小区定义-同步广播信号块non CD-SSB。
  20. 如权利要求19所述的方法，其特征在于，所述指示信息包括：
    所述第二PCI和所述第二SSB的类型；或者，
    所述第二PCI和所述第二SSB对应的频点；或者，
    所述第二PCI、所述第二SSB的类型和所述第二SSB的对应的频点。
  21. 如权利要求15至20任一项所述的方法，其特征在于，所述第一接入网设备为集中式单元CU，所述第二接入网设备和第三接入网设备为分布式单元DU，所述CU对应至少一个DU，所述CU支持分组数据汇聚协议PDCP的协议栈功能、无线资源控制RRC的协议栈功能和业务数据适应协议SDAP的协议栈功能中的至少一种，所述DU支持无线链路控制RLC的协议栈功能、媒体访问控制MAC的协议栈功能和物理层PHY的协议栈功能中的至少一种；
    所述第二接入网设备接收来自第一接入网设备的指示信息，包括：
    所述第二接入网设备通过F1接口接收来自所述第一接入网设备的所述指示信息。
  22. 如权利要求15至20任一项所述的方法，其特征在于，所述第一接入网设备为主节点，所述第二接入网设备为辅节点，一个所述主节点对应至少一个所述辅节点；
    所述第二接入网设备接收来自第一接入网设备的指示信息，包括：
    所述第二接入网设备通过Xn接口接收来自所述第一接入网设备的所述指示信息；或者，
    所述第二接入网设备通过X2接口接收来自所述第一接入网设备的所述指示信息。
  23. 一种通信方法，其特征在于，包括：
    第二接入网设备接收来自第一接入网设备的指示信息，所述指示信息用于指示第一小区的第一物理小区标识PCI和第二小区的第二PCI发生冲突，其中，所述第一PCI对应所述第一同步广播信号块SSB，所述第二PCI对应第二SSB；
    所述第二接入网设备指示集中式管理节点修改所述第二PCI或所述第一PCI。
  24. 一种通信方法，其特征在于，包括：
    第一接入网设备获取第一PCI的范围信息和/或第二PCI的范围信息；
    所述第一接入网设备根据所述第一PCI的范围信息修改第一PCI，和/或，根据所述第二PCI的范围信息修改第二PCI；其中，所述第一PCI的范围信息为第一小区可用的PCI范围，所述第二PCI的范围信息为第二小区可用的PCI范围。
  25. 如权利要求24所述的方法，其特征在于，所述第一小区属于所述第一接入网设备，且所述第二小区属于第二接入网设备；
    所述第一接入网设备获取第一PCI的范围信息和/或第二PCI的范围信息，包括：
    所述第一接入网设备从所述第一接入网设备获取所述第一PCI的范围信息，和/或，从所述第二接入网设备获取所述第二PCI的范围信息。
  26. 如权利要求24所述的方法，其特征在于，所述第一小区和所述第二小区都属于所述第一接入网设备；
    所述第一接入网设备获取第一PCI的范围信息和/或第二PCI的范围信息，包括：
    所述第一接入网设备从所述第一接入网设备的获取所述第一PCI的范围信息和/或所述第二PCI的范围信息。
  27. 如权利要求24所述的方法，其特征在于，所述第一小区和第二小区都属于第二接入网设备；
    所述第一接入网设备获取第一PCI的范围信息和/或第二PCI的范围信息，包括：
    所述第一接入网设备从所述第二接入网设备获取所述第一PCI的范围信息和/或所述第二PCI的范围信息。
  28. 如权利要求24所述的方法，其特征在于，所述第一小区属于第二接入网设备，所述第二小区属于第三接入网设备；
    所述第一接入网设备获取第一PCI的范围信息和/或第二PCI的范围信息，包括：
    所述第一接入网设备从所述第二接入网设备获取所述第一PCI的范围信息，和/或，从所述第三接入网设备获取所述第二PCI的范围信息，其中，所述第二接入网设备和所述第三接入网设备都由所述第一接入网设备管理。
  29. 一种通信装置，其特征在于，包括处理器和收发器：
    所述处理器，用于确定第一小区的第一物理小区标识PCI和第二小区的第二PCI发生冲突，其中，所述第一PCI对应第一同步广播信号块SSB，所述第二PCI对应第二SSB；
    所述收发器，用于向所述第二接入网设备发送指示信息，所述指示信息用于指示所述第一PCI和所述第二PCI发生冲突。
  30. 如权利要求29所述的通信装置，其特征在于，
    所述第一小区属于所述通信装置，且所述第二小区属于所述第二接入网设备；
    或者，所述第一小区和所述第二小区都属于所述通信装置；
    或者，所述第一小区和所述第二小区都属于所述第二接入网设备；
    或者，所述第一小区属于所述第二接入网设备，且所述第二小区属于第三接入网设备，其中，所述第二接入网设备和所述第三接入网设备都由所述通信装置管理。
  31. 如权利要求29或30所述的通信装置，其特征在于，所述收发器还用于：
    获取所述第一小区对应的SSB信息和所述第二小区对应的SSB信息，所述第一小区对应的SSB信息包括所述第一PCI，所述第二小区对应的SSB信息包括所述第二PCI。
  32. 如权利要求28-30任一项所述的通信装置，其特征在于，所述第一小区对应的SSB 信息还包括第一SSB对应的频点，所述第二小区对应的SSB信息还包括所述第二SSB对应的频点；
    所述处理器，具体用于：
    确定所述第一SSB和所述第二SSB相邻、所述第一SSB对应的频点和所述第二SSB对应的频点相同、且所述第一PCI和所述第二PCI相同时，确定所述第一PCI和所述第二PCI发生冲突。
  33. 如权利要求32所述的通信装置，其特征在于，所述处理器，具体用于：
    确定所述第一SSB和所述第二SSB直接相邻；或者，确定所述第一SSB和所述第二SSB分别与第三SSB直接相邻。
  34. 如权利要求32或33所述的通信装置，其特征在于，所述第二小区对应的SSB信息还包括所述第二SSB的类型，所述第二SSB的类型为小区定义-同步广播信号块CD-SBB或非小区定义-同步广播信号块non CD-SSB。
  35. 如权利要求34所述的通信装置，其特征在于，所述指示信息包括：
    所述第二PCI和所述第二SSB的类型；或者，
    所述第二PCI和所述第二SSB对应的频点；或者，
    所述第二PCI、所述第二SSB的类型和所述第二SSB对应的频点。
  36. 如权利要求30所述的通信装置，其特征在于，所述通信装置用于集中式单元CU，所述第二接入网设备和所述第三接入网设备为分布式单元DU，所述CU对应至少一个DU，所述CU支持分组数据汇聚协议PDCP的协议栈功能、无线资源控制RRC的协议栈功能和业务数据适应协议SDAP的协议栈功能中的至少一种，所述DU支持无线链路控制RLC的协议栈功能、媒体访问控制MAC的协议栈功能和物理层PHY的协议栈功能中的至少一种；
    所述收发器，具体用于：
    通过F1接口向所述第二接入网设备发送所述指示信息。
  37. 如权利要求29至36任一项所述的通信装置，其特征在于，所述通信装置用于主节点，所述第二接入网设备为辅节点，一个所述主节点对应至少一个辅节点；
    所述收发器，具体用于：
    通过Xn接口向所述第二接入网设备发送所述指示信息；或者，通过X2接口向所述第二接入网设备发送所述指示信息。
  38. 如权利要求29至37任一项所述的通信装置，其特征在于，所述处理器，还用于：
    修改所述第一PCI和/或所述第二PCI。
  39. 如权利要求38所述的通信装置，其特征在于，所述收发器，还用于：
    获取所述第一PCI的范围信息和/或所述第二PCI的范围信息，所述第一PCI的范围信息为所述第一小区可用的PCI的范围，所述第二PCI的范围信息为所述第二小区可用的PCI范围。
  40. 如权利要求29至31任一所述的通信装置，其特征在于，所述第一小区对应的SSB信息还包括所述第一SSB对应的测量时间配置MTC、所述第一SSB对应的子载波间隔SCS和所述第一SSB对应的时域；所述第二小区对应的SSB信息还包括所述第二SSB对应的MTC、所述第二SSB对应的SCS和所述第二SSB对应的时域；
    所述处理器，具体用于：
    确定所述第一SSB和所述第二SSB相邻、所述第一SSB对应的MTC和所述第二SSB对应的MTC相同、所述第一SSB对应的SCS和所述第二SSB对应的SCS相同、且所述第一SSB对应的时域和所述第二SSB对应的时域相同时，确定所述第一PCI和所述第二PCI发生冲突。
  41. 如权利要求29至40任一所述的通信装置，其特征在于，所述第一小区对应一个所述第一PCI，所述第二小区对应一个所述第二PCI。
  42. 如权利要求29至41任一所述的通信装置，其特征在于，若所述第一小区包括一个SSB，则所述第一小区的所述第一PCI为所述第一SSB对应的所述第一PCI；
    若所述第一小区包括多个SSB，则所述第一小区的第一PCI为所述多个SSB中的一个SSB对应的所述第一PCI；
    若所述第二小区包括一个SSB，则所述第二小区的所述第二PCI为所述第二SSB对应的所述第二PCI；
    若所述第二小区包括多个SSB，则所述第二小区的所述第二PCI为所述多个SSB中的一个SSB对应的所述第二PCI。
  43. 一种通信装置，其特征在于，包括收发器和处理器：
    所述收发器，用于从第一接入网设备接收指示信息，所述指示信息用于指示第一小区的第一物理小区标识PCI和第二小区的第二PCI发生冲突，其中，所述第一PCI对应第一同步广播信号块SSB，所述第二PCI对应第二SSB；
    所述处理器，用于根据所述指示信息修改所述第二PCI。
  44. 如权利要求43所述的通信装置，其特征在于，所述收发器，还用于：
    向所述第一接入网设备发送所述第二小区对应的SSB信息，所述第二小区对应的SSB信息包括所述第二PCI，所述第二小区属于所述第二接入网设备。
  45. 如权利要求44所述的通信装置，其特征在于，所述处理器，具体用于：
    根据所述指示信息确定所述第二SSB，并修改所述第二SSB对应的第二PCI。
  46. 如权利要求43至45任一项所述的通信装置，其特征在于，所述第一接入网设备为集中式单元CU，所述通信装置和第三接入网设备用于分布式单元DU，所述CU对应至少一个DU，所述CU支持分组数据汇聚协议PDCP的协议栈功能、无线资源控制RRC的协议栈功能和业务数据适应协议SDAP的协议栈功能中的至少一种，所述DU支持无线链路控制RLC的协议栈功能、媒体访问控制MAC的协议栈功能和物理层PHY的协议栈功能中的至少一种；
    所述收发器，具体用于：
    通过F1接口接收来自所述第一接入网设备的所述指示信息。
  47. 如权利要求43至46任一项所述的通信装置，其特征在于，所述第一接入网设备为主节点，所述通信装置用于辅节点，一个所述主节点对应至少一个辅节点；
    所述收发器，具体用于：
    通过Xn接口接收来自所述第一接入网设备的所述指示信息；或者，通过X2接口接收来自所述第一接入网设备的所述指示信息。
  48. 一种通信装置，其特征在于，包括收发器：
    所述收发器，用于接收来自第一接入网设备的指示信息，所述指示信息用于指示第一小区的第一物理小区标识PCI和第二小区的第二PCI发生冲突，其中，所述第一PCI对应 所述第一同步广播信号块SSB，所述第二PCI对应第二SSB；以及指示集中式管理节点修改所述第二PCI或所述第一PCI。
  49. 一种通信装置，其特征在于，包括处理器和收发器：
    所述收发器，用于获取第一PCI的范围信息和/或第二PCI的范围信息；
    所述处理器，用于根据所述第一PCI的范围信息修改第一PCI，和/或，根据所述第二PCI的范围信息修改第二PCI；其中，所述第一PCI的范围信息为第一小区可用的PCI范围，所述第二PCI的范围信息为第二小区可用的PCI范围。
  50. 如权利要求49所述的通信装置，其特征在于，所述第一小区属于所述第一接入网设备，且所述第二小区属于第二接入网设备；
    所述收发器具体用于：从所述第一接入网设备获取所述第一PCI的范围信息，和/或，从所述第二接入网设备获取所述第二PCI的范围信息。
  51. 如权利要求49所述的通信装置，其特征在于，所述第一小区和所述第二小区都属于所述第一接入网设备；
    所述收发器具体用于：从所述第一接入网设备的获取所述第一PCI的范围信息和/或所述第二PCI的范围信息。
  52. 如权利要求49所述的通信装置，其特征在于，所述第一小区和第二小区都属于第二接入网设备；
    所述收发器具体用于：从所述第二接入网设备获取所述第一PCI的范围信息和/或所述第二PCI的范围信息。
  53. 如权利要求49所述的通信装置，其特征在于，所述第一小区属于第二接入网设备，所述第二小区属于第三接入网设备；
    所述第一接入网设备获取第一PCI的范围信息和/或第二PCI的范围信息，包括：
    所述第一接入网设备从所述第二接入网设备获取所述第一PCI的范围信息，和/或，从所述第三接入网设备获取所述第二PCI的范围信息，其中，所述第二接入网设备和所述第三接入网设备都由所述第一接入网设备管理。
  54. 一种通信装置，其特征在于，包括用于执行如权利要求1至14中的任一项所述方法的单元。
  55. 一种通信装置，其特征在于，包括用于执行如权利要求15至22中的任一项所述方法的单元。
  56. 一种通信装置，其特征在于，包括用于执行如权利要求23所述方法的单元。
  57. 一种通信装置，其特征在于，包括用于执行如权利要求24至28任一项所述方法的单元。
  58. 一种通信系统，其特征在于，包括权利要求29至42中任一项所述的通信装置和权利要求43至47中任一项所述的通信装置。
  59. 一种计算机可读存储介质，其特征在于，所述计算机可读存储介质中存储软件程序，所述软件程序在被一个或多个处理器读取并执行时实现权利要求1至28中任一项所述的方法。
  60. 一种计算机程序产品，其特征在于，所述计算机程序产品包括计算机程序或指令，当所述计算机程序或指令被通信装置执行时，实现如权利要求1至28中任一项所述的方法。
  61. 一种芯片系统，其特征在于，包括处理器，所述处理器与存储器相连，所述存储器用于存储计算机程序，所述处理器用于从所述存储器中调用并运行存储的计算机程序，使得安装有芯片系统的装置执行如权利要求1至28中任一项所述的方法。
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