WO2021088093A1 - 通信方法及装置 - Google Patents

通信方法及装置 Download PDF

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Publication number
WO2021088093A1
WO2021088093A1 PCT/CN2019/116894 CN2019116894W WO2021088093A1 WO 2021088093 A1 WO2021088093 A1 WO 2021088093A1 CN 2019116894 W CN2019116894 W CN 2019116894W WO 2021088093 A1 WO2021088093 A1 WO 2021088093A1
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WIPO (PCT)
Prior art keywords
neighboring cell
information
side link
terminal
cell
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PCT/CN2019/116894
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English (en)
French (fr)
Inventor
刘俊
常俊仁
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to PCT/CN2019/116894 priority Critical patent/WO2021088093A1/zh
Priority to CN201980101187.5A priority patent/CN114503759A/zh
Publication of WO2021088093A1 publication Critical patent/WO2021088093A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling

Definitions

  • This application relates to the field of communication technology, and in particular to a communication method and device.
  • the system information block (SIB) used to carry sidelink (SL) configuration information in the neighboring cell of a cell can be used on demand (on -Demand) mode.
  • the base station will not broadcast the SIB before receiving the request from the terminal.
  • the terminal is required to camp in a neighboring cell of the cell to obtain the SIB, and then obtain the SL configuration
  • the information is not conducive to the cell reselection of the terminal performing SL communication.
  • the embodiments of the present application provide a communication method and device for improving the success rate of network access.
  • a communication method including: a terminal receives system information including side link configuration information of the neighboring cell from a neighboring cell of a first cell in a non-on-demand manner, and according to the side link of the neighboring cell The configuration information determines the priority of the frequency point adopted by the neighboring cell.
  • the side link is a direct communication link between the terminal and other terminals.
  • the neighboring cell can send system information including the SL configuration information of the neighboring cell to the terminal in a non-on-demand manner.
  • the terminal performing SL communication can directly obtain the SL of the neighboring cell in the first cell.
  • the configuration information does not need to reside in the neighboring cell, which can facilitate the terminal to perform cell reselection according to the SL configuration information of the neighboring cell, and improve the success rate of network access.
  • the terminal receives system information from the neighboring cell of the first cell in a non-on-demand manner, including: the terminal receives the system information directly from the neighboring cell, for example, the terminal directly receives the system information from the neighboring cell System information broadcasted by neighboring cells.
  • the side link configuration information of the neighboring cell includes one or more of the following information: whether the neighboring cell provides side link resource configuration information; whether the neighboring cell only Provides anchor point carrier information; whether the neighboring cell provides information about the side link resource configuration using the first wireless access technology; whether the neighboring cell provides information about the side link resource configuration using the second wireless access technology; neighbor Whether the area provides only anchor carrier information for the side link using the first radio access technology; whether the neighboring area provides only the anchor carrier information for the side link using the second radio access technology.
  • the terminal can perform cell reselection according to the SL resource configuration of the neighboring cell. For example, the terminal can select a neighboring cell that can provide the SL resource configuration that meets the SL communication requirements, thereby ensuring the SL after reselecting to the neighboring cell. Communication quality.
  • a communication method which includes: a terminal receives system information including side link configuration information of a neighboring cell of the first cell from a first cell, and determines the neighboring cell based on the side link configuration information of the neighboring cell. The priority of the frequency point used in the zone.
  • the side link is a direct communication link between the terminal and other terminals
  • the side link configuration information of the neighboring cell includes one or more of the following information: whether the neighboring cell provides side link resource configuration Information; whether the neighboring cell provides only anchor point carrier information; whether the neighboring cell provides information on the side link resource configuration using the first wireless access technology; whether the neighboring cell provides the side link using the second wireless access technology Information on resource configuration; whether the neighboring cell only provides anchor point carrier information for the side link using the first radio access technology; whether the neighboring cell only provides anchor point carrier information for the side link using the second wireless access technology Information.
  • the first cell can send system information containing the SL configuration information of the neighboring cell to the terminal.
  • the terminal performing SL communication can directly obtain the SL configuration information of the neighboring cell without staying in The neighboring cell can facilitate the terminal to perform cell reselection based on the SL configuration information of the neighboring cell, and improve the success rate of network access.
  • the terminal receiving system information from the first cell includes: the terminal receiving system information from the first cell in an on-demand or non-on-demand manner.
  • the terminal receives system information from the first cell in an on-demand manner, including: the terminal sends a request message to the first cell, and the request message is used to request the side link of the neighboring cell Configuration information; the terminal receives system information from the first cell.
  • the terminal receiving system information from the first cell in a non-on-demand manner includes: the terminal directly receiving system information from the first cell.
  • the first cell obtains the side link configuration information of the neighboring cell through an interface between the network device to which the first cell belongs and the network device to which the neighboring cell belongs.
  • the side link resource configuration includes a carrier inner uplink resource configuration and/or an inter-carrier side link resource configuration.
  • the carrier inner uplink resource configuration of the adjacent cell refers to the side uplink resource configuration of the same frequency as the frequency adopted by the adjacent cell, or ,
  • the inter-carrier side link resource configuration of the neighboring cell refers to the side link resource configuration of a frequency point different from the frequency used in the neighboring cell , Or, the side link resource configuration on the adjacent frequency of the frequency adopted by the neighboring cell, or the side link resource configuration on the carrier different from the carrier used by the neighboring cell.
  • the terminal determines the priority of the frequency point adopted by the neighboring cell according to the side link configuration information of the neighboring cell, including: In the case where the link configuration information determines that the neighboring cell provides side link resource configuration, the terminal determines the frequency point used by the neighboring cell as the frequency point with the highest priority. For a terminal performing side-link communication, side-link resources are required to perform side-link communication. Therefore, this optional method will be able to provide the frequency used by the neighboring cell of the side-link resource configuration. The point is determined as the frequency point with the highest priority, which can ensure that the side link resources are available after reselecting to the neighboring cell.
  • the terminal meets one or more of the following conditions: the terminal has side-link communication capabilities, the terminal is configured for side-link communication, and the terminal is Authorize side link communication.
  • the terminal determines the priority of the frequency point used by the neighboring cell according to the side link configuration information of the neighboring cell, including: When one wireless access technology is used for side-link communication and the second wireless access technology is also used for side-link communication, the terminal will not only provide side-link resource configuration using the first wireless access technology, but also The frequency used by the neighboring cell that provides the side link resource configuration using the second wireless access technology is determined to be the frequency with the highest priority; or the terminal is configured to use only the first wireless access technology for the side link In the case of communication, the terminal determines the frequency used by the neighboring cell that provides the sidelink resource configuration using the first wireless access technology as the frequency with the highest priority; or, when the terminal is configured to use only the second wireless access In the case of side-link communication using the access technology, the terminal determines the frequency point adopted by the neighboring cell using the side-link resource configuration of the second wireless access technology as the frequency point with the highest priority.
  • the terminal when the terminal is currently configured to use a certain (or certain) radio access technology for sidelink communication, the terminal will be able to provide the use of the certain (or certain) wireless access technology
  • the frequency point used in the neighboring cell of the side link resource configuration is determined as the frequency point with the highest priority, which can ensure that appropriate side link resources are available after reselecting to the neighboring cell.
  • the terminal is configured to use both the first wireless access technology for side-link communication and the second wireless access technology for side-link communication.
  • the terminal meets one or more of the following conditions: the terminal has the ability to use both the first wireless access technology for side-link communication and the second wireless access technology for side-link communication ; The terminal is authorized to use the first wireless access technology and the second wireless access technology for side link communication; or, in the case that the terminal is configured to only use the first wireless access technology for side link communication, The terminal meets one or more of the following conditions: the terminal has the ability to use the first wireless access technology for side link communication, and the terminal is authorized to perform side link communication using the first wireless access technology; or, When the terminal is configured to only use the second wireless access technology for side-link communication, the terminal meets one or more of the following conditions: the terminal has the ability to use the second wireless access technology for side-link communication, The terminal is authorized to perform sidelink communication using the second wireless access technology.
  • one bit is used to indicate whether the neighboring cell provides sidelink resource configuration, and/or one bit is used to indicate whether the neighboring cell only provides anchor points Carrier.
  • 2 bits are used to indicate whether the neighboring cell provides side link resource configuration using the first radio access technology and/or the second radio access technology .
  • the side link resource configuration includes the side link transmission resource configuration, and/or the side link reception resource configuration.
  • the neighboring cell does not provide side link resource configuration means that the neighboring cell does not provide the side link resource configuration through system information, nor does it provide it through dedicated signaling. Side link resource configuration.
  • the neighboring cell does not provide side link resource configuration means that the neighboring cell does not provide side link resource configuration through system information, but provides side link resource configuration through dedicated signaling. Uplink resource configuration.
  • the side link configuration information of the neighboring cell includes one or more of the following information: the side link radio bearer configuration provided by the neighboring cell corresponds to QoS configuration file index; whether the neighboring cell has information about the configuration of the side link radio bearer that enables HARQ; whether the neighboring cell has the information of the side link radio bearer configuration using RLC AM; the side link resource pool provided by the neighboring cell Index; the lowest CBR index of the side link resource pool provided by the neighboring cell; whether the neighboring cell has information about the synchronization reference source configuration; the side link resource configuration provided by the neighboring cell; the side link radio bearer configuration provided by the neighboring cell; The synchronization reference source configuration provided by the neighboring cell.
  • the terminal determines that there are multiple frequency points with the highest priority, the terminal can determine the relative priority of these frequency points based on this information, so as to determine the priority of the frequency points more accurately.
  • the terminal determines the priority of the frequency point adopted by the neighboring cell according to the side link configuration information of the neighboring cell, including: when the terminal is configured to be in the side line When the service is transmitted on the link, the terminal determines the frequency used by the neighboring cell that meets the service requirements in the neighboring cell according to the side link configuration information of the neighboring cell as the frequency with the highest priority. In this possible implementation, the terminal determines the frequency used by the neighboring cell that meets the service requirements in the neighboring cell as the frequency with the highest priority, thereby ensuring that appropriate side link resources are available after reselecting to the neighboring cell .
  • a communication method is provided, which is applied to a network device, and the network device provides a neighboring cell of a first cell.
  • the method includes: generating system information including side link configuration information of the neighboring cell, where the side link is A direct communication link between two terminals; the neighboring cell sends system information to the terminal located in the first cell in a non-on-demand manner, and the side link configuration information of the neighboring cell in the system information is used for the terminal to determine the neighboring cell The priority of the frequency point used.
  • the neighboring cell can send system information containing the SL configuration information of the neighboring cell to the terminal in a non-on-demand manner.
  • the terminal performing SL communication can directly obtain the SL of the neighboring cell in the first cell.
  • the configuration information does not need to reside in the neighboring cell, which can facilitate the terminal to perform cell reselection according to the SL configuration information of the neighboring cell, and improve the success rate of network access.
  • the neighboring cell sends system information to the terminal located in the first cell in a non-on-demand manner, including: the neighboring cell directly sends the system information to the terminal.
  • the side link configuration information of the neighboring cell includes one or more of the following information: whether the neighboring cell provides information on the side link resource configuration; whether the neighboring cell only Provides anchor point carrier information; whether the neighboring cell provides information about the side link resource configuration using the first wireless access technology; whether the neighboring cell provides information about the side link resource configuration using the second wireless access technology; neighbor Whether the area provides only anchor carrier information for the side link using the first radio access technology; whether the neighboring area provides only the anchor carrier information for the side link using the second radio access technology.
  • the terminal can perform cell reselection according to the SL resource configuration of the neighboring cell. For example, the terminal can select a neighboring cell that can provide the SL resource configuration that meets the SL communication requirements, thereby ensuring the SL after reselecting to the neighboring cell. Communication quality.
  • a communication method is provided, which is applied to a network device, and the network device provides a first cell.
  • the method includes: generating system information including sidelink configuration information of neighboring cells of the first cell, and sending the system information to the first cell.
  • the terminal in a cell sends system information, and the side link configuration information of the neighboring cell in the system information is used by the terminal to determine the priority of the frequency point used by the neighboring cell.
  • the side link is a direct communication link between two terminals
  • the side link configuration information of the neighboring cell includes one or more of the following information: whether the neighboring cell provides information on the side link resource configuration ; Whether the neighboring cell provides only anchor carrier information; whether the neighboring cell provides information on the side link resource configuration using the first wireless access technology; whether the neighboring cell provides side link resources using the second wireless access technology Configuration information; whether the neighboring cell only provides anchor point carrier information for the side link using the first wireless access technology; whether the neighboring cell only provides anchor point carrier information for the side link using the second wireless access technology information.
  • the first cell can send system information containing the SL configuration information of the neighboring cell to the terminal.
  • the terminal performing SL communication can directly obtain the SL configuration information of the neighboring cell without staying in The neighboring cell can facilitate the terminal to perform cell reselection based on the SL configuration information of the neighboring cell, and improve the success rate of network access.
  • the first cell sending system information to a terminal located in the first cell includes: the first cell sending system information to the terminal in an on-demand or non-on-demand manner.
  • the first cell sends system information to the terminal in an on-demand manner, including: the first cell receives a request message from the terminal, and the request message is used to request the side link of the neighboring cell Configuration information; the first cell sends system information to the terminal according to the request message.
  • the first cell sending system information to the terminal in a non-on-demand manner includes: the first cell directly sending system information to the terminal.
  • the first cell obtains the side link configuration information of the neighboring cell through an interface between the network device to which the first cell belongs and the network device to which the neighboring cell belongs.
  • the side link resource configuration includes a carrier inner uplink resource configuration and/or an inter-carrier side link resource configuration.
  • the carrier inner uplink resource configuration of the adjacent cell refers to the side uplink resource configuration of the same frequency as the frequency adopted by the adjacent cell, or ,
  • the inter-carrier side link resource configuration of the neighboring cell refers to the side link resource configuration of a frequency point different from the frequency used in the neighboring cell , Or, the side link resource configuration on the adjacent frequency of the frequency adopted by the neighboring cell, or the side link resource configuration on the carrier different from the carrier used by the neighboring cell.
  • one bit is used to indicate whether the neighboring cell provides sidelink resource configuration, and/or one bit is used to indicate whether the neighboring cell only provides anchor points Carrier.
  • 2 bits are used to indicate whether the neighboring cell provides side link resource configuration using the first radio access technology and/or the second radio access technology .
  • the side link resource configuration includes the side link transmission resource configuration, and/or the side link reception resource configuration.
  • the neighboring cell does not provide side link resource configuration means that the neighboring cell does not provide side link resource configuration through system information, nor does it provide through dedicated signaling. Side link resource configuration.
  • the neighboring cell does not provide side link resource configuration means that the neighboring cell does not provide side link resource configuration through system information, but provides side link resource configuration through dedicated signaling. Uplink resource configuration.
  • the side link configuration information of the neighboring cell includes one or more of the following information: the side link radio bearer configuration provided by the neighboring cell corresponds to QoS configuration file index; whether the neighboring cell has information about the configuration of the side link radio bearer that enables HARQ; whether the neighboring cell has the information of the side link radio bearer configuration using RLC AM; the side link resource pool provided by the neighboring cell Index; the lowest CBR index of the side link resource pool provided by the neighboring cell; whether the neighboring cell has information about the synchronization reference source configuration; the side link resource configuration provided by the neighboring cell; the side link radio bearer configuration provided by the neighboring cell; The synchronization reference source configuration provided by the neighboring cell.
  • the terminal determines that there are multiple frequency points with the highest priority, the terminal can determine the relative priority of these frequency points based on this information, so as to determine the priority of the frequency points more accurately.
  • a communication method including: a terminal receives system information including side link configuration information of a neighboring cell of a first cell, and determining the neighboring cell based on the side link configuration information of the neighboring cell of the first cell Whether the district meets business needs.
  • the side link configuration information of the neighboring cell includes one or more of the following information: whether the neighboring cell provides information about the side link resource configuration; whether the neighboring cell only provides information about the anchor carrier; whether the neighboring cell provides Information about the side link resource configuration of the first wireless access technology; whether the neighboring cell provides information about the side link resource configuration using the second wireless access technology; the neighboring cell is for the side link using the first wireless access technology Whether the link provides only anchor carrier information; whether the neighboring cell only provides anchor carrier information for the side link using the second radio access technology; the QoS configuration corresponding to the side link radio bearer configuration provided by the neighboring cell File index; whether the neighboring cell has information about the configuration of the side link radio bearer that enables HARQ; whether the neighboring cell has the information of the side link radio bearer configuration using RLC AM; the index of the side link resource pool provided by the neighboring cell; The lowest CBR index of the side link resource pool provided by the neighboring cell; whether the neighboring cell has the information of the synchronization reference source configuration;
  • the terminal performing SL communication can obtain the SL configuration information of the neighboring cell, and can determine whether the neighboring cell meets the service requirements according to the SL configuration information of the neighboring cell.
  • the terminal can be reselected to meet the service requirements This prevents subsequent connection establishment or connection restoration, avoids increasing the power consumption of the terminal, and can also improve service transmission performance and continuity.
  • the terminal receiving system information includes: the terminal receiving system information from a neighboring cell in a non-on-demand manner.
  • the terminal receives the system information from the neighboring cell in a non-on-demand manner, including: the terminal directly receives the system information from the neighboring cell.
  • the terminal receiving system information includes: the terminal receiving system information from the first cell.
  • the terminal receiving system information from the first cell includes: the terminal receiving system information from the first cell in an on-demand or non-on-demand manner.
  • the terminal receives system information from the first cell in an on-demand manner, including: the terminal sends a request message to the first cell, and the request message is used to request the side link of the neighboring cell Configuration information; the terminal receives system information from the first cell.
  • the terminal receiving system information from the first cell in a non-on-demand manner includes: the terminal directly receiving system information from the first cell.
  • the first cell obtains the side link configuration information of the neighboring cell through an interface between the network device to which the first cell belongs and the network device to which the neighboring cell belongs.
  • the side link resource configuration includes the inner carrier link resource configuration and/or the inter-carrier side link resource configuration.
  • the carrier inner uplink resource configuration of the neighboring cell refers to the side uplink resource configuration of the same frequency as the neighboring cell, or the same as that of the neighboring cell.
  • the side link resource configuration on the same carrier used in the carrier; the inter-carrier side link resource configuration of the adjacent cell refers to the side link resource configuration of a frequency point different from the frequency point used in the adjacent cell, or The side link resource configuration on the adjacent frequency of the frequency adopted by the cell, or the side link resource configuration on a carrier different from the carrier used by the adjacent cell.
  • one bit is used to indicate whether the neighboring cell provides side link resource configuration, and/or one bit is used to indicate whether the neighboring cell only provides anchor point carriers.
  • 2 bits are used to indicate whether the neighboring cell provides a side link resource configuration using the first radio access technology and/or the second radio access technology.
  • the side link resource configuration includes the side link transmission resource configuration, and/or the side link reception resource configuration.
  • the neighboring cell does not provide side link resource configuration means that the neighboring cell does not provide side link resource configuration through system information, nor does it provide side link resource configuration through dedicated signaling. Resource allocation.
  • the neighboring cell does not provide sidelink resource configuration means that the neighboring cell does not provide sidelink resource configuration through system information, but provides sidelink resource configuration through dedicated signaling Configuration.
  • the method further includes: when the side link configuration information of the neighboring cell does not meet service requirements, the terminal does not preferentially reselect to the neighboring cell. This possible implementation can avoid reselecting to neighboring cells that do not meet service requirements.
  • the method further includes: in the case that the side link configuration information of the neighboring cell does not meet the service requirements, the terminal avoids reselecting to the neighboring cell.
  • This possible implementation can avoid reselecting to neighboring cells that do not meet service requirements.
  • the method further includes: the terminal removes the neighboring cell whose side link configuration information of the neighboring cell does not meet the service requirements from the first candidate cell list to obtain the second candidate cell list.
  • Candidate cell list if the number of cells in the second candidate cell list is greater than 0, the terminal performs cell reselection in the second candidate cell list; if the number of cells in the second candidate cell list is equal to 0, the terminal will remove The cell is then added to the second candidate cell list, and cell reselection is performed in the second candidate cell list after the cell is added.
  • the method further includes: the terminal adds the neighboring cell whose side link configuration information in the first candidate cell list meets service requirements to the second candidate cell list; 2. If the number of cells in the candidate cell list is greater than 0, the terminal performs cell reselection in the second candidate cell list; if the number of cells in the second candidate cell list is equal to 0, the terminal performs cell reselection in the first candidate cell list selected.
  • This possible implementation can avoid reselecting to neighboring cells that do not meet service requirements.
  • a communication method is provided, which is applied to a network device, and the network device provides a neighboring cell of a first cell.
  • the method includes: generating system information including side link configuration information of the neighboring cell of the first cell, and The system information is sent to the terminal located in the first cell in a non-on-demand manner, and the side link configuration information of the neighboring cell in the system information is used by the terminal to determine whether the neighboring cell meets service requirements.
  • the side link configuration information of the neighboring cell includes one or more of the following information: whether the neighboring cell provides information about the side link resource configuration; whether the neighboring cell only provides information about the anchor carrier; whether the neighboring cell provides Information about the side link resource configuration of the first wireless access technology; whether the neighboring cell provides information about the side link resource configuration using the second wireless access technology; the neighboring cell is for the side link using the first wireless access technology Whether the link provides only anchor carrier information; whether the neighboring cell only provides anchor carrier information for the side link using the second radio access technology; the QoS configuration corresponding to the side link radio bearer configuration provided by the neighboring cell File index; whether the neighboring cell has information about the configuration of the side link radio bearer that enables HARQ; whether the neighboring cell has the information of the side link radio bearer configuration using RLC AM; the index of the side link resource pool provided by the neighboring cell; The lowest CBR index of the side link resource pool provided by the neighboring cell; whether the neighboring cell has the information of the synchronization reference source configuration;
  • the terminal performing SL communication can obtain the SL configuration information of the neighboring cell, and can determine whether the neighboring cell meets the service requirements according to the SL configuration information of the neighboring cell. In this case, the terminal can be reselected to meet the service requirements This prevents subsequent connection establishment or connection restoration, avoids increasing the power consumption of the terminal, and can also improve service transmission performance and continuity.
  • the neighboring cell sends system information to the terminal located in the first cell in a non-on-demand manner, including: the neighboring cell directly sends the system information to the terminal.
  • a communication method is provided, which is applied to a network device, and the network device provides a first cell.
  • the method includes: generating system information including sidelink configuration information of neighboring cells of the first cell, and sending the system information to the first cell.
  • the terminal in a cell sends system information, and the side link configuration information of the neighboring cell in the system information is used by the terminal to determine whether the neighboring cell meets service requirements.
  • the side link configuration information of the neighboring cell includes one or more of the following information: whether the neighboring cell provides information about the side link resource configuration; whether the neighboring cell only provides information about the anchor carrier; whether the neighboring cell provides Information about the side link resource configuration of the first wireless access technology; whether the neighboring cell provides information about the side link resource configuration using the second wireless access technology; the neighboring cell is for the side link using the first wireless access technology Whether the link provides only anchor carrier information; whether the neighboring cell only provides anchor carrier information for the side link using the second radio access technology; the QoS configuration corresponding to the side link radio bearer configuration provided by the neighboring cell File index; whether the neighboring cell has information about the configuration of the side link radio bearer that enables HARQ; whether the neighboring cell has the information of the side link radio bearer configuration using RLC AM; the index of the side link resource pool provided by the neighboring cell; The lowest CBR index of the side link resource pool provided by the neighboring cell; whether the neighboring cell has the information of the synchronization reference source configuration;
  • the terminal performing SL communication can obtain the SL configuration information of the neighboring cell, and can determine whether the neighboring cell meets the service requirements according to the SL configuration information of the neighboring cell.
  • the terminal can be reselected to meet the service requirements This prevents subsequent connection establishment or connection restoration, avoids increasing the power consumption of the terminal, and can also improve service transmission performance and continuity.
  • the first cell sending system information to a terminal located in the first cell includes: the first cell sending system information to the terminal in an on-demand or non-on-demand manner.
  • the first cell sends system information to the terminal in an on-demand manner, including: the first cell receives a request message from the terminal, and the request message is used to request the side link of the neighboring cell Configuration information; the first cell sends system information to the terminal according to the request message.
  • the first cell sending system information to the terminal in a non-on-demand manner includes: the first cell directly sending system information to the terminal.
  • the first cell obtains the side link configuration information of the neighboring cell through an interface between the network device to which the first cell belongs and the network device to which the neighboring cell belongs.
  • the side link resource configuration includes a carrier inner uplink resource configuration and/or an inter-carrier side link resource configuration.
  • the carrier inner uplink resource configuration of the adjacent cell refers to the side uplink resource configuration of the same frequency as the frequency adopted by the adjacent cell, or ,
  • the inter-carrier side link resource configuration of the neighboring cell refers to the side link resource configuration of a frequency point different from the frequency used in the neighboring cell , Or, the side link resource configuration on the adjacent frequency of the frequency adopted by the neighboring cell, or the side link resource configuration on the carrier different from the carrier used by the neighboring cell.
  • one bit is used to indicate whether the neighboring cell provides sidelink resource configuration, and/or one bit is used to indicate whether the neighboring cell only provides anchor points Carrier.
  • 2 bits are used to indicate whether the neighboring cell provides side link resource configuration using the first radio access technology and/or the second radio access technology .
  • the side link resource configuration includes the side link transmission resource configuration, and/or the side link reception resource configuration.
  • the neighboring cell does not provide the side link resource configuration means that the neighboring cell does not provide the side link resource configuration through system information, nor does it provide it through dedicated signaling. Side link resource configuration.
  • the neighboring cell does not provide side link resource configuration means that the neighboring cell does not provide side link resource configuration through system information, but provides side link resource configuration through dedicated signaling. Uplink resource configuration.
  • a communication device including: a functional unit for executing any one of the methods provided in the first aspect, and the actions performed by the functional unit are realized by hardware or by hardware executing corresponding software.
  • the communication device may include a communication unit and a processing unit.
  • the communication unit is used for receiving and/or sending signals, and the processing unit is used for information processing.
  • a communication device including: a functional unit for executing any one of the methods provided in the second aspect, and the actions performed by the functional unit are realized by hardware or by hardware executing corresponding software.
  • the communication device may include a communication unit and a processing unit.
  • the communication unit is used for receiving and/or sending signals, and the processing unit is used for information processing.
  • a communication device which includes a functional unit for executing any of the methods provided in the third aspect, and the actions performed by the functional unit are realized by hardware or by hardware executing corresponding software.
  • the communication device may include a communication unit and a processing unit.
  • the communication unit is used for receiving and/or sending signals, and the processing unit is used for information processing.
  • a communication device which includes a functional unit for executing any one of the methods provided in the fourth aspect, and the actions performed by the functional unit are implemented by hardware or implemented by hardware executing corresponding software.
  • the communication device may include a communication unit and a processing unit.
  • the communication unit is used for receiving and/or sending signals, and the processing unit is used for information processing.
  • a communication device including: a functional unit for executing any one of the methods provided in the fifth aspect, and the actions performed by the functional unit are realized by hardware or by hardware executing corresponding software.
  • the communication device may include a communication unit and a processing unit.
  • the communication unit is used for receiving and/or sending signals, and the processing unit is used for information processing.
  • a communication device which includes a functional unit for executing any one of the methods provided in the sixth aspect, and the actions performed by the functional unit are realized by hardware or by hardware executing corresponding software.
  • the communication device may include a communication unit and a processing unit.
  • the communication unit is used for receiving and/or sending signals, and the processing unit is used for information processing.
  • a communication device including: a functional unit for executing any one of the methods provided in the seventh aspect, and the actions performed by the functional unit are implemented by hardware or implemented by hardware executing corresponding software.
  • the communication device may include a communication unit and a processing unit.
  • the communication unit is used for receiving and/or sending signals, and the processing unit is used for information processing.
  • a communication device including a processor.
  • the processor is connected to the memory, and the memory is used to store computer-executed instructions, and the processor executes the computer-executed instructions stored in the memory, so as to implement any one of the methods provided in any one of the first to seventh aspects.
  • the memory and the processor can be integrated together or can be independent devices. In the latter case, the memory may be located in the communication device or outside the communication device.
  • the processor includes a logic circuit, and also includes at least one of an input interface and an output interface. Among them, the output interface is used to execute the sending action in the corresponding method, and the input interface is used to execute the receiving action in the corresponding method.
  • the communication device further includes a communication interface and a communication bus, and the processor, the memory, and the communication interface are connected through the communication bus.
  • the communication interface is used to perform the sending and receiving actions in the corresponding method.
  • the communication interface may also be called a transceiver.
  • the communication interface includes at least one of a transmitter and a receiver. In this case, the transmitter is used to perform the sending action in the corresponding method, and the receiver is used to perform the receiving action in the corresponding method.
  • the communication device exists in the form of a chip product.
  • a communication system including: the communication device provided in the eighth aspect and the communication device provided in the tenth aspect; or, the communication device provided in the ninth aspect and the communication device provided in the eleventh aspect Communication device; the communication device provided by the above-mentioned twelfth aspect and the communication device provided by the above-mentioned thirteenth aspect or the fourteenth aspect.
  • a computer-readable storage medium including instructions, which when run on a computer, cause the computer to execute any one of the methods provided in any one of the first to seventh aspects.
  • a computer program product containing instructions is provided, when the instructions are run on a computer, the computer executes any one of the methods provided in any one of the first to seventh aspects.
  • FIG. 1 is a schematic diagram of a network architecture provided by an embodiment of the application
  • FIG. 1 is a schematic diagram of V2X communication
  • FIG. 7 is a schematic diagram of the composition of a communication device provided by an embodiment of this application.
  • FIG. 8 and FIG. 9 are respectively schematic diagrams of the hardware structure of a communication device provided by an embodiment of the application.
  • A/B can mean A or B.
  • “And/or” in this article is only an association relationship describing the associated objects, which means that there can be three kinds of relationships.
  • a and/or B can mean: A alone exists, A and B exist at the same time, and B exists alone. These three situations.
  • “at least one” means one or more, and “plurality” means two or more.
  • the words “first” and “second” do not limit the quantity and order of execution, and the words “first” and “second” do not limit the difference.
  • the network elements involved in this application include network equipment and terminals in a communication system.
  • the method provided by the embodiment of the present application mainly involves the communication between the terminal and the terminal, and the communication between the terminal and the network device.
  • the terminal and the network device can communicate through the Uu port, and the terminal and the terminal can communicate through the PC5 port.
  • the communication link for direct communication between the terminal and the terminal may be referred to as an SL or side link.
  • two terminals performing SL communication can access the same network device, for example, terminal 1 and terminal 2, or can access different network devices (for example, terminal 2 and terminal 3).
  • the sending terminal can directly send data to the receiving terminal, without first sending the data to the network device, and then forwarding it through the core network, and then sending it to the receiving terminal, which can greatly reduce the data transmission delay.
  • the communication systems in the embodiments of this application include but are not limited to long term evolution (LTE) systems, fifth-generation (5th-generation, 5G) systems, NR systems, wireless local area networks (WLAN) systems, and Future evolution system or multiple communication fusion systems.
  • LTE long term evolution
  • 5th-generation 5th-generation
  • 5G fifth-generation
  • NR wireless local area networks
  • WLAN wireless local area networks
  • Future evolution system or multiple communication fusion systems Future evolution system or multiple communication fusion systems.
  • the method provided in the embodiments of the present application can be specifically applied to the evolved-universal terrestrial radio access network (E-UTRAN) and the next generation-radio access network (next generation-radio access network). , NG-RAN) system.
  • E-UTRAN evolved-universal terrestrial radio access network
  • N-RAN next generation-radio access network
  • the network device in the embodiment of the present application is an entity on the network side that is used to send signals, receive signals, or send signals and receive signals.
  • the network equipment may be a device that is deployed in a radio access network (RAN) to provide wireless communication functions for the terminal.
  • RAN radio access network
  • the network equipment may be a transmission reception point (TRP), a base station (for example, an evolved base station (evolved base station)).
  • CRAN cloud radio access network
  • RSU roadside unit
  • the network equipment may be various forms of macro base stations, micro base stations (also referred to as small stations), relay stations, access points (access points, AP), etc., and may also be antenna panels of base stations.
  • the control node may be connected to multiple base stations and configure resources for multiple terminals under the coverage of the multiple base stations.
  • RAT radio access technologies
  • the names of devices with base station functions may be different. For example, it may be called eNB or eNodeB in the LTE system, and it may be called gNB in the 5G system or NR system.
  • the specific name of the base station is not limited in this application.
  • the network equipment may also be the network equipment in the public land mobile network (PLMN) that will evolve in the future.
  • PLMN public land mobile network
  • the terminal in the embodiment of the present application is an entity on the user side that is used to receive signals, or send signals, or receive signals and send signals.
  • the terminal is used to provide users with one or more of voice services and data connectivity services.
  • the terminal can also be called user equipment (UE), terminal equipment, access terminal, user unit, user station, mobile station, remote station, remote terminal, mobile device, user terminal, wireless communication device, user agent, or user Device.
  • UE user equipment
  • the terminal can be a vehicle to everything (V2X) device, for example, smart car (smart car or intelligent car), digital car (digital car), unmanned car (unmanned car or driverless car or pilotless car or automobile), automatic Automobile (self-driving car or autonomous car), pure electric vehicle (pure EV or battery EV), hybrid electric vehicle (hybrid electric vehicle, HEV), extended-range electric vehicle (range extended EV, REEV), plug-in hybrid electric vehicle Automobile (plug-in HEV, PHEV), new energy vehicle (new energy vehicle), etc.
  • the terminal may also be a device to device (D2D) device, for example, an electric meter, a water meter, and so on.
  • D2D device to device
  • the terminal can also be a mobile station (MS), subscriber unit (subscriber unit), drone, Internet of things (IoT) equipment, station (ST) in WLAN, and cellular phone (cellular phone). ), smart phone (smart phone), cordless phone, wireless data card, tablet computer, session initiation protocol (SIP) phone, wireless local loop (WLL) station, personal digital processing (personal) Digital assistant (PDA) equipment, laptop computer, machine type communication (MTC) terminal, handheld device with wireless communication function, computing device or other processing equipment connected to wireless modem, vehicle-mounted equipment , Wearable devices (also known as wearable smart devices).
  • the terminal may also be a terminal in a next-generation communication system, for example, a terminal in a 5G system or a terminal in a future evolved PLMN, a terminal in an NR system, and so on.
  • D2D unmanned driving
  • ADS autonomous driving
  • ADAS driver assistance
  • intelligent driving intelligent driving
  • V2V vehicle-to-vehicle
  • V2I vehicle-to-roadside infrastructure
  • V2P vehicle-to-pedestrian communication
  • V2P vehicle-to-vehicle
  • V2N Network, V2N and other communication methods to obtain road condition information or receive information services in time. These communication methods can be collectively referred to as V2X communication.
  • FIG 2 is a schematic diagram of V2V communication and V2I communication.
  • vehicles can broadcast their own speed, driving direction, specific location, and whether they have stepped on emergency brakes and other information to surrounding vehicles.
  • Drivers of surrounding vehicles can obtain this type of information to make changes.
  • Good perception of traffic conditions outside the line of sight so as to predict dangerous conditions in advance and make avoidance.
  • roadside infrastructure such as RSU
  • RSU roadside infrastructure
  • the network device in this application may be a roadside infrastructure, for example, an RSU, and the terminal may be a vehicle.
  • the SL resources used can be of the following two types.
  • the first type dedicated resources
  • the dedicated resource may be a resource scheduled for the terminal by the network device through the mode 1 (mode 1) resource configuration mode (name in NR) or the mode 3 (mode 3) resource configuration mode (name in LTE).
  • mode 1 or mode 3 the network device can semi-statically or dynamically allocate SL resources for the terminal through a dedicated radio network temporary identifier (RNTI) of the terminal.
  • RNTI radio network temporary identifier
  • Dedicated resources include configured grant (CG) resources, for example, type 1 (type 1) CG (SL configured grant type-1) resources, type 2 (type 2) CG (SL configured grant type-2) resources, and authorization-free ( SL grant free) resources, semi-persistent scheduling (SL Semi-Persistent Scheduling, SL SPS) resources.
  • Dedicated resources also include dynamic grant (DG) resources.
  • Mode1 or mode3 in the embodiments of this application all refer to resource allocation methods based on base station scheduling, and is not limited to mode1 or mode3, but also includes future resource allocation methods based on base station scheduling.
  • the competing resources may be resources allocated by the network device to the terminal through the mode 2 (mode2) resource configuration mode (name in NR) or the mode 4 (mode4) resource configuration mode (name in LTE).
  • mode 2 or mode 4 when the terminal is within the communication coverage of the network device, the network device can configure the SL resource pool for the terminal through broadcasted system information or dedicated signaling, and the SL resource pool is shared by multiple terminals. The terminal obtains appropriate SL resources in the SL resource pool by competing with other terminals to send control signals and/or data signals.
  • Mode 2 and Mode 4 support idle, inactive, and connected terminals.
  • Mode2 or mode4 in the embodiments of this application all refer to a terminal autonomous resource allocation method, which is not limited to mode2 or mode4, and also includes a future terminal autonomous resource allocation method.
  • This application mainly relates to the second SL resource.
  • Cell selection refers to the process of selecting a cell to camp on when the terminal is powered on or enters the coverage area from a blind area.
  • the terminal selects a PLMN and performs a cell search, determines a cell that meets certain conditions, and selects a cell to camp on among the cells that meet certain conditions through cell selection.
  • Cell reselection refers to the cell reselection when the terminal is in an idle state or in an inactive state.
  • the terminal stays in a cell, as the terminal moves, the signal strength of the current cell and nearby cells is constantly changing. Therefore, the terminal needs to monitor the signal quality of the neighboring cell and the current cell, and select the best one through cell reselection. Provide services in the community.
  • Cell reselection includes intra-frequency cell reselection and inter-frequency cell reselection (including inter-RAT cell reselection).
  • inter-frequency (inter-frequency) cell reselection includes inter-frequency cell reselection that does not cross RAT and cross-RAT cell reselection.
  • the terminal When performing cell reselection, the terminal prioritizes each frequency according to certain rules, and sequentially determines whether the cell on the frequency meets the condition according to the priority of each frequency from high to low. If multiple neighboring cells on the highest priority meet the conditions, the terminal selects the best cell on the highest priority frequency point. For the same priority frequency points (or the same frequency), the R criterion of the same frequency cell reselection is used to reselect the cells.
  • the frequency point can also be replaced with a carrier wave, and the carrier wave can also be replaced with a frequency point.
  • the terminal When performing cell reselection, the terminal determines a cell satisfying the S criterion in the candidate cell list, and performs cell reselection among the cells satisfying the S criterion.
  • the candidate cell list below may refer to the initial candidate cell list, or may refer to the list of cells that satisfy the S criterion in the candidate cell set.
  • the cell reselection priority refers to the priority of each frequency point in the above cell reselection.
  • the following describes the existing cell reselection priority of the terminal performing SL communication through Case 1 and Case 2.
  • NR Uu refers to NR Uu port
  • NR SL refers to NR SL
  • LTE Uu refers to LTE Uu port
  • LTE SL refers to LTE SL
  • NR V2X refers to NR V2X
  • LTE V2X refers to LTE's V2X.
  • the network device can provide in-carrier in-carrier for the terminal in the neighboring cell through NR Uu. (intra-carrier) NRSL configuration, inter-carrier NRSL configuration, and NR anchor carrier that provides NRSL configuration.
  • the intra-carrier NR SL configuration refers to the NR SL configuration of the same NR SL frequency as the NR Uu frequency.
  • the inter-carrier NR SL configuration refers to the NR SL configuration of the NR SL frequency point that is different from the NR Uu frequency point.
  • the network device when the network device provides intra-carrier NR SL configuration and inter-carrier NR SL configuration, it will provide specific SL resource configuration.
  • the network device provides NR anchor carrier, the network device does not provide SL configuration, and the terminal searches for NR anchor carrier.
  • NR SL configuration the neighboring cell can indicate the anchor carrier through the parameter anchorCarrierFreqList.
  • the NR Uu frequency that can provide intra-carrier NR SL configuration and inter-carrier NR SL configuration is the frequency with the highest priority in the cell reselection priority.
  • the terminal needs to read the SIB scheduling information in the SIB1 of the neighboring cell to learn whether the neighboring cell provides the SIB that can carry the NRSL configuration.
  • the SIB that provides NR SL configuration can be provided in an on-demand or non-on-demand manner.
  • the on-demand mode means that the network device sends the SIB to the terminal after receiving the request of the terminal.
  • the SIB may be NR V2X SIB, and the NR V2X SIB may include one or more of the aforementioned intra-carrier NR SL configuration, inter-carrier NR SL configuration, and NR anchor carrier configuration that provides NR SL configuration.
  • the network device uses LTE Uu to configure NR SL for the terminal, the network device provides inter-carrier NR SL configuration for the terminal in the neighboring cell through LTE Uu, and provides NR SL configured LTE Anchor carrier and NR anchor carrier that provides NR SL configuration.
  • the inter-carrier NR SL configuration refers to the NR SL configuration of the NR SL frequency point different from the LTE Uu frequency point.
  • the LTE Uu frequency point that can provide inter-carrier NR SL configuration is the frequency point with the highest priority among the cell reselection priorities.
  • the network device uses NR Uu to configure the terminal for LTE SL, the network device provides inter-carrier LTE SL configuration for the terminal in the neighboring cell through NR Uu, and provides LTE SL configured LTE Anchor carrier and NR anchor carrier that provides LTE SL configuration.
  • the inter-carrier LTE SL configuration refers to the LTE SL configuration of the LTE SL frequency point different from the NR Uu frequency point.
  • the NR Uu frequency point that can provide inter-carrier LTE SL configuration is the frequency point with the highest priority among the cell reselection priorities.
  • the SIB carrying the LTE SL configuration is the existing SIB.
  • the SIB carrying the NR SL configuration is also an existing SIB.
  • the SIB carrying the NR SL configuration is a separate new SIB (for example, SIB28).
  • the SIB carrying the LTE SL configuration is also a separate new SIB (for example, SIB29).
  • the terminal needs to read the SIB scheduling information in the SIB1 of the neighboring cell to learn whether the neighboring cell provides SIBs with NR SL configuration and/or LTESL configuration. For example, if the SIB scheduling information in SIB1 includes the scheduling information of the existing SIB and the new SIB, it means that the neighboring cell can provide SIBs in NR SL configuration and LTE SL configuration.
  • the network device can perform NR SL configuration for the terminal only through LTE Uu, or it can perform NR SL configuration and LTE SL configuration for the terminal through LTE Uu. If the network device performs LTE SL configuration for the terminal through NR Uu, the network device can perform LTE SL configuration for the terminal only through NR Uu, or it can perform LTE SL configuration and NR SL configuration for the terminal through NR Uu.
  • the frequency of providing both LTE SL configuration and NR SL configuration may be higher than the frequency of providing only LTE SL configuration or NR SL configuration.
  • the priority is high.
  • the terminal can learn whether the neighboring cell provides SIBs carrying NR SL configuration and/or LTE SL configuration by reading the SIB scheduling information in SIB1 of the neighboring cell, but if the SIB is Provided in an on-demand manner, the terminal is required to stay in the neighboring cell to obtain the SIB, and then to obtain the SL configuration information, so that the terminal performing SL communication cannot determine the priority of the frequency adopted by the neighboring cell in the serving cell.
  • the terminal can learn whether the neighboring cell provides SIBs carrying NR SL configuration and/or LTE SL configuration by reading the SIB scheduling information in SIB1 of the neighboring cell. If the SIB is passed For non-on-demand provisioning, although the terminal can directly obtain the SIB, reading the SIB of multiple neighboring cells by the terminal will increase the power consumption of the terminal.
  • a terminal If a terminal reselects to a cell, but the cell does not provide SL resource configuration or does not meet the quality of service (QoS) requirements of the current V2X service sidelink radio bearer (SLRB) configuration, Then the terminal needs to initiate connection establishment (for idle state terminals) or connection recovery (for inactive state terminals) to obtain appropriate SL resources or SL configurations from the network device. On the one hand, this will increase the power consumption of handheld (pedestrian to everything, P2X) terminals. On the other hand, the terminal uses a special (exeptional) resource pool for service transmission before obtaining the appropriate SL resource or SL configuration, but the performance of the exeptional resource pool is unreliable, especially when the number of terminals used is relatively large. The performance difference in competing resources is relatively large, which will affect the service transmission performance and continuity of the V2X terminal with service transmission, and has a greater impact on critical services.
  • QoS quality of service
  • SLRB V2X service sidelink radio bearer
  • the present application provides the communication method shown in the following embodiments.
  • the neighboring cell of the cell where the terminal resides (the cell where the terminal resides is recorded as the first cell in each embodiment of this application) (in each embodiment of this application, the neighboring cell of the first cell is briefly described) Is a neighboring cell) sends system information to the terminal in a non-on-demand manner.
  • the communication method provided in the first embodiment includes:
  • the system information includes SL configuration information of neighboring cells.
  • SL is a direct communication link between two terminals.
  • the first cell and neighboring cells are both provided by network equipment.
  • the network device that provides one or more neighboring cells and the network device that provides the first cell may be the same network device or different network devices. I won't repeat them in the following.
  • the system information may be generated by the network device to which the neighboring cell belongs (or the network device that provides the neighboring cell), or may be generated by the neighboring cell.
  • the neighboring cell generation is used as an example for drawing.
  • SL configuration may include one or more of SL resource configuration, synchronization configuration, resource selection configuration, zone configuration, channel busy ratio (CBR) related configuration and other information.
  • the SL resource configuration may be used to indicate SL resources, for example, one or more of SL time domain resources, SL frequency domain resources, SL code domain resources, and SL space domain resources. I won't repeat them in the following.
  • the SL resource configuration may be the resource configuration of SL communication, or the resource configuration in SL communication configuration.
  • the neighboring cell sends system information to the terminal in a non-on-demand manner.
  • the terminal receives system information from neighboring cells in a non-on-demand manner.
  • each of the multiple neighboring cells can perform step 301 and step 302, and the terminal can receive system information sent by multiple neighboring cells.
  • the non-on-demand mode in each embodiment of the present application refers to a mode that does not rely on the request of the terminal to send information to the terminal.
  • the non-on-demand mode in each embodiment of the present application refers to a mode in which information can be obtained without sending a request.
  • it may include: the neighboring cell directly sends the system information to the terminal, and correspondingly, the terminal directly receives the system information from the neighboring cell.
  • that the terminal directly receives information means that the terminal does not send a request before receiving the information.
  • Directly sending information by a cell means that the cell does not send information according to the request of the terminal.
  • the non-on-demand mode may be a broadcast mode.
  • it may include: neighboring cell broadcasting system information, and correspondingly, the terminal receives the neighboring cell broadcast system information from the neighboring cell.
  • the system information may be a system information block that cannot be sent in an on-demand manner (for example, a master information block (MIB), MIB-SL-V2X, SIB1, etc.).
  • MIB master information block
  • MIB-SL-V2X MIB-SL-V2X
  • SIB1 SIB1
  • the on-demand mode in each embodiment of the present application refers to a mode of sending information to the terminal depending on the request of the terminal.
  • the on-demand mode in each embodiment of the present application refers to a mode in which information can be obtained only by sending a request.
  • the information used to indicate part or all of the information is part or all of the information in the system information (for example, SIB28 and/or SIB29) used to carry SL configuration information)
  • the system information for example, MIB, MIB-SL-V2X, or SIB1 put in this application is sent to the terminal, so that the terminal can obtain some information that cannot be obtained in a non-on-demand manner.
  • the information used to indicate part or all of the information may be information that directly indicates the part or all of the information, or may be information that indirectly indicates the part or all of the information, and this application is not limited.
  • the terminal determines the priority of the frequency point used by the neighboring cell according to the SL configuration information of the neighboring cell.
  • the method further includes:
  • the terminal performs cell reselection according to the priority of the frequency point adopted by the neighboring cell.
  • step 304 can refer to the prior art, which will not be repeated here.
  • the neighboring cell can send system information containing the SL configuration information of the neighboring cell to the terminal in a non-on-demand manner.
  • the terminal performing SL communication can directly obtain the SL of the neighboring cell in the first cell.
  • the configuration information does not need to reside in a neighboring cell, which can facilitate the terminal to perform cell reselection according to the SL configuration information of the neighboring cell (that is, the above problem 1 can be solved).
  • the terminal does not need to read the SIB carrying the NR SL configuration and/or the LTE SL configuration, which can avoid increasing the power consumption of the terminal (that is, the above problem 2 can be solved).
  • the terminal may determine the priority of the frequency point used by the neighboring cell according to the SL configuration information of the neighboring cell, so as to perform cell reselection. For example, the terminal may set the priority of the frequency adopted by the neighboring cell that meets the SL communication requirement to a higher priority, so as to ensure that the cell reselected by the terminal meets the terminal's SL communication requirement.
  • the SL configuration information of the neighboring cell includes one or more of the following information:
  • the first RAT may be LTE
  • the second RAT may be NR.
  • the SL resource configuration includes the SL sending resource configuration, and/or the SL receiving resource configuration.
  • SL resource configuration includes intra-carrier SL resource configuration (that is, SL resource configuration carried in intra-carrier SL configuration) and/or inter-carrier SL resource configuration (that is, SL resource configuration carried in inter-carrier SL configuration) Resource allocation).
  • the intra-carrier SL resource configuration of the neighboring cell refers to the SL resource configuration of the same frequency as that of the neighboring cell, or the SL resource configuration of the carrier on the same carrier as the neighboring cell;
  • the inter-carrier SL resource configuration refers to the SL resource configuration at a frequency different from the frequency used in the adjacent cell, or the SL resource configuration on the adjacent frequency of the frequency used in the adjacent cell, or the carrier used in the adjacent cell SL resource configuration on different carriers.
  • the frequency or carrier used by the neighboring cell can be the frequency or carrier used by the neighboring cell at the Uu port.
  • the SL resource configuration provided by the neighboring cell means one of the following meanings:
  • the neighboring cell provides intra-carrier SL resource configuration
  • the neighboring cell provides inter-carrier SL resource configuration
  • the neighboring cell provides intra-carrier SL resource configuration and inter-carrier SL resource configuration.
  • the neighboring cell does not provide SL resource configuration means that the neighboring cell does not provide intra-carrier SL resource configuration and inter-carrier SL resource configuration.
  • the neighboring cell does not provide SL resource configuration only means that the neighboring cell does not provide SL resource configuration through system information, but there is no restriction on whether to provide SL resource configuration through other information.
  • the neighboring cell does not provide SL resource configuration it means that the neighboring cell does not provide SL resource configuration through system information, nor does it provide SL resource configuration through dedicated signaling; or, if the neighboring cell does not provide SL resource configuration, it means that the neighboring cell does not pass system information.
  • the SL resource configuration provided by the system information is a resource pool configuration (for example, a mode2 or mode4 resource pool configuration).
  • the SL resource configuration provided by dedicated signaling can be a resource pool configuration or a non-resource pool configuration (for example, mode1 or mode3 resource configuration).
  • the neighboring cell may or may not provide an anchor carrier.
  • 1 bit is used to indicate whether the neighboring cell provides SL resource configuration. For example, when the bit value is 0, it means that the neighboring cell does not provide SL resource configuration, and when the bit value is 1, it means that the neighboring cell provides SL resource configuration. The reverse is also possible.
  • multiple bits may be used to indicate whether the neighboring cell provides intra-carrier SL resource configuration and/or inter-carrier SL resource configuration.
  • one of the two bits is used to indicate whether the neighboring cell provides intra-carrier SL resource configuration
  • the other one of the two bits is used to indicate whether the neighboring cell provides inter-carrier SL resource configuration.
  • it is distinguished by the different values of 2 bits. 00 means only intra-carrier SL resource configuration is provided, 01 means only inter-carrier SL resource configuration is provided, and 10 means both intra-carrier SL resource configuration and inter-carrier are provided. carrier SL resource allocation.
  • multiple bits may be used to indicate whether the neighboring cell provides intra-carrier SL resource configuration, inter-carrier SL resource configuration, and anchor carrier.
  • the first bit of the 3 bits indicates whether the neighboring cell provides intra-carrier SL resource configuration
  • the second bit of the 3 bits indicates whether the neighbor cell provides inter-carrier SL resource configuration.
  • the third bit in indicates whether the neighboring cell provides an anchor point carrier.
  • 100 means to provide both intra-carrier SL resource configuration and anchor carrier
  • 101 means to provide both inter-carrier SL resource configuration and anchor carrier
  • 111 means to provide intra-carrier at the same time SL resource configuration, inter-carrier SL resource configuration and anchor carrier.
  • the neighboring cell only provides anchor point carriers, which means that the neighboring cell only provides anchor point carriers and does not provide SL configuration (naturally, it does not provide SL resource configuration).
  • the neighboring cell not only provides the anchor carrier, which means that the neighboring cell may also provide SL resource configuration or other information in addition to the anchor carrier.
  • 1 bit is used to indicate whether the neighboring cell only provides anchor point carriers. For example, when the bit value is 0, it means that the neighboring cell only provides anchor point carriers, and when the bit value is 1, it means that the neighboring cell not only provides anchor point carriers. The reverse is also possible.
  • 1 bit is used to indicate whether the neighboring cell provides SL resource configuration using the first RAT. For example, when the bit value is 0, it means that the neighboring cell provides SL resource configuration using the first RAT, and when the bit value is 1, it means that the neighboring cell does not provide SL resource configuration using the first RAT. The reverse is also possible.
  • multiple bits may be used to indicate whether the neighboring cell provides intra-carrier SL resource configuration using the first RAT and/or inter-carrier SL resource configuration using the first RAT.
  • -carrier SL resource configuration For example, one of the two bits is used to indicate whether the neighboring cell provides the intra-carrier SL resource configuration using the first RAT, and the other one of the two bits is used to indicate whether the neighboring cell provides the inter-carrier using the first RAT.
  • carrier SL resource allocation For another example, it is distinguished by the different values of 2 bits.
  • 00 means only intra-carrier SL resource configuration using the first RAT is provided
  • 01 means only inter-carrier SL resource configuration using the first RAT is provided
  • 10 means simultaneous Provides intra-carrier SL resource configuration using the first RAT and inter-carrier SL resource configuration using the first RAT.
  • multiple bits can be used to indicate whether the neighboring cell provides intra-carrier SL resource configuration using the first RAT, and inter-carrier SL resource configuration using the first RAT.
  • carrier SL resource configuration and anchor carrier using the first RAT For example, the first bit of the 3 bits indicates whether the neighboring cell provides the intra-carrier SL resource configuration using the first RAT, and the second bit of the 3 bits indicates whether the neighboring cell provides the inter-carrier SL resource configuration using the first RAT.
  • -carrier SL resource configuration indicates whether the neighboring cell provides an anchor carrier using the first RAT. For another example, it is distinguished by the different values of 3 bits.
  • 000 means only the intra-carrier SL resource configuration using the first RAT is provided, 001 means only the inter-carrier SL resource configuration using the first RAT is provided, and 010 means only the inter-carrier SL resource configuration using the first RAT is provided.
  • 011 indicates that both intra-carrier SL resource configuration that uses the first RAT and inter-carrier SL resource configuration that uses the first RAT are provided.
  • 100 indicates that intra-carrier that uses the first RAT is provided at the same time.
  • 101 indicates that both the inter-carrier SL resource configuration adopting the first RAT and the anchor carrier adopting the first RAT are provided at the same time, and 111 indicates the intra-carrier adopting the first RAT is provided at the same time SL resource configuration, inter-carrier SL resource configuration using the first RAT, and anchor carrier using the first RAT.
  • 1 bit is used to indicate whether the neighboring cell provides SL resource configuration using the second RAT. For example, when the bit value is 0, it means that the neighboring cell provides SL resource configuration using the second RAT, and when the bit value is 1, it means that the neighboring cell does not provide SL resource configuration using the second RAT. The reverse is also possible.
  • multiple bits can be used to indicate whether the neighboring cell provides intra-carrier SL resource configuration using the second RAT and/or inter-carrier SL resource configuration using the second RAT.
  • -carrier SL resource configuration For example, one of the two bits is used to indicate whether the neighboring cell provides the intra-carrier SL resource configuration using the second RAT, and the other one of the two bits is used to indicate whether the neighboring cell provides the inter-carrier using the second RAT.
  • carrier SL resource allocation For another example, it is distinguished by the different values of 2 bits.
  • 00 means only intra-carrier SL resource configuration using the second RAT is provided
  • 01 means only inter-carrier SL resource configuration using the second RAT is provided
  • 10 means simultaneous Provides intra-carrier SL resource configuration using the second RAT and inter-carrier SL resource configuration using the second RAT.
  • multiple bits may be used to indicate whether the neighboring cell provides intra-carrier SL resource configuration using the second RAT, and inter-carrier SL resource configuration using the second RAT.
  • carrier SL resource configuration and anchor carrier using the second RAT For example, the first bit of the 3 bits indicates whether the neighboring cell provides the intra-carrier SL resource configuration using the second RAT, and the second bit of the 3 bits indicates whether the neighboring cell provides the inter-carrier SL resource configuration using the second RAT.
  • -carrier SL resource configuration indicates whether the neighboring cell provides an anchor carrier using the second RAT. For another example, it is distinguished by different values of 3 bits.
  • 000 means only the intra-carrier SL resource configuration using the second RAT is provided, 001 means only the inter-carrier SL resource configuration using the second RAT is provided, and 010 means only the inter-carrier SL resource configuration using the second RAT is provided.
  • 011 means that both intra-carrier SL resource configuration using the second RAT and inter-carrier SL resource configuration using the second RAT are provided at the same time, and 100 means intra-carrier using the second RAT is provided at the same time SL resource configuration and the anchor carrier adopting the second RAT, 101 indicates that both the inter-carrier SL resource configuration adopting the second RAT and the anchor carrier adopting the second RAT are provided at the same time, and 111 indicates the intra-carrier adopting the second RAT is provided at the same time.
  • SL resource configuration, inter-carrier SL resource configuration using the second RAT, and anchor carrier using the second RAT are provided at the same time.
  • the neighboring cell only provides the anchor carrier for the SL using the first RAT, which means that the neighboring cell only provides the anchor carrier using the first RAT, and does not provide the SL resource configuration of the first RAT.
  • the neighboring cell not only provides the anchor carrier for the SL adopting the first RAT, which means that the neighboring cell may provide the SL resource configuration of the first RAT in addition to the anchor carrier of the first RAT.
  • 1 bit is used to indicate whether the neighboring cell only provides an anchor point carrier for the SL adopting the first RAT. For example, when the bit value is 0, it means that the neighboring cell only provides anchor point carriers for the SL adopting the first RAT, and when the bit value is 1, it means that the neighboring cell not only provides anchor point carriers for the SL adopting the first RAT. The reverse is also possible.
  • the neighboring cell only provides the anchor carrier for the SL using the second RAT, which means that the neighboring cell only provides the anchor carrier using the second RAT, and does not provide the SL resource configuration of the second RAT.
  • the neighboring cell not only provides an anchor carrier for the SL using the second RAT, which means that the neighboring cell provides the anchor carrier using the second RAT but may also provide the SL resource configuration of the second RAT.
  • 1 bit is used to indicate whether the neighboring cell only provides an anchor carrier for the SL adopting the second RAT. For example, when the bit value is 0, it means that the neighboring cell only provides an anchor carrier for the SL using the second RAT. When the bit value is 1, it means that the neighboring cell not only provides the anchor carrier for the SL using the second RAT. The reverse is also possible.
  • the different values of the multiple bits indicate whether the neighboring cell provides SL resource configuration using the first RAT and/or the second RAT. Exemplarily, 00 indicates that only the SL resource configuration using the first RAT is provided, 01 indicates that only the SL resource configuration using the second RAT is provided, and 10 indicates that the SL resource configuration using the first RAT and the second RAT are provided at the same time. Information 5 and information 6 are similar and will not be repeated here.
  • the SL configuration information of the neighboring cell may only include information 1 or information 3 (at this time, the RAT supported by the neighboring cell is the first RAT) Or information 4 (at this time, the RAT supported by the neighboring cell is the second RAT), and the terminal can determine whether the neighboring cell provides SL resource configuration according to the information 1 or the information 3 or the information 4.
  • the SL configuration information of the neighboring cell may include a plurality of information 1 to information 4, and the terminal determines whether the neighboring cell provides SL resource configuration according to one or more of the plurality of information.
  • the SL configuration information of the neighboring cell may only include information 3 and information 4, or may include both information 3 and information 4, and also include information 1. And/or information 2.
  • the SL configuration information of the neighboring cell also includes whether the neighboring cell provides the use of other RATs other than the first RAT and the second RAT ( For example, the information about the SL resource configuration of the RAT that will be evolved in the future.
  • the neighboring cell provides information about the SL resource configuration using the RAT, or it can be indicated by different values of multiple bits (for example, 3 or 5 bits). Whether the neighboring cell provides SL resource configuration using one or more of multiple RATs.
  • step 303 When the information contained in the SL configuration information of the neighboring cell is different, the implementation of step 303 is also different. The following describes cases 1 to 4 respectively.
  • the SL configuration information of the neighboring cell includes at least information 1.
  • step 303 when step 303 is specifically implemented, it includes: in the case that the terminal determines that the neighboring cell provides the SL resource configuration according to the SL configuration information of the neighboring cell, the terminal determines the frequency adopted by the neighboring cell as the frequency with the highest priority .
  • the terminal determines whether the neighboring cell provides SL resource configuration according to information 1.
  • the terminal satisfies one or more of the following conditions: the terminal has side-link communication capabilities, the terminal is configured to perform side-link communication, and the terminal is authorized to perform side-link communication.
  • the SL configuration information of the neighboring cell includes at least information 2.
  • step 303 when the terminal determines that the neighboring cell does not provide SL resource configuration according to the SL configuration information of the neighboring cell, the terminal does not determine the frequency adopted by the neighboring cell as the highest priority Frequency.
  • the terminal determines according to information 2 that the neighboring cell does not provide SL resource configuration.
  • the terminal has SL communication capabilities, and the terminal is configured to perform SL communication.
  • the SL configuration information of the neighboring cell includes at least information 3 and information 4.
  • step 303 when step 303 is specifically implemented, it includes:
  • the terminal When the terminal is configured to use both the first RAT for SL communication and the second RAT for SL communication, the terminal will provide both the SL resource configuration using the first RAT and the SL resource configuration using the second RAT.
  • the frequency point used in the neighboring cell is determined as the frequency point with the highest priority; or,
  • the terminal In the case that the terminal is configured to use only the first RAT for SL communication, the terminal will provide a neighboring cell that uses the SL resource configuration of the first RAT (at this time, the neighboring cell can provide the SL resource configuration of the second RAT, or The SL resource configuration using the second RAT is not provided)
  • the frequency used is determined as the frequency with the highest priority; or,
  • the terminal In the case that the terminal is configured to only use the second RAT for SL communication, the terminal will use the neighboring cell configured with the SL resource of the second RAT (at this time, the neighboring cell may provide the SL resource configuration using the first RAT, or not Provide the SL resource configuration using the first RAT)
  • the frequency used is determined as the frequency with the highest priority.
  • the SL configuration information of the neighboring cell includes at least information 5 and information 6.
  • step 303 when step 303 is specifically implemented, it includes:
  • the terminal In the case that the terminal is configured to use both the first RAT for SL communication and the second RAT for SL communication, the terminal will only provide anchor carriers for SLs that use the first RAT and/or for SLs that use the second RAT.
  • the frequency used by the neighboring cell that only provides the anchor carrier is uncertain as the frequency with the highest priority; or,
  • the terminal In the case that the terminal is configured to use only the first RAT for SL communication, the terminal will not determine the frequency used by the neighboring cell that only provides the anchor carrier for the SL using the first RAT as the frequency with the highest priority; or,
  • the terminal In the case where the terminal is configured to use only the second RAT for SL communication, the terminal will not determine the frequency used by the neighboring cell that only provides the anchor carrier for the SL using the first RAT as the frequency with the highest priority.
  • Case 3 and Case 4 when the terminal is configured to use both the first RAT for SL communication and the second RAT for SL communication, the terminal meets one or more of the following conditions: The ability of a RAT to perform SL communication and also use a second RAT for SL communication; the terminal is authorized to perform SL communication using the first RAT and the second RAT.
  • the terminal when the terminal is configured to only use the first RAT for SL communication, the terminal meets one or more of the following conditions: the terminal has the ability to use the first RAT for SL communication, and the terminal is authorized Perform SL communication using the first RAT.
  • the terminal when the terminal is configured to only use the second RAT for SL communication, the terminal meets one or more of the following conditions: the terminal has the ability to use the second RAT for SL communication, and the terminal is authorized Perform SL communication using the second RAT.
  • the SL configuration information of the neighboring cell includes one or more of the following information:
  • Radio link control radio link control
  • AM acknowledged mode
  • the terminal can determine whether the SLRB configuration provided by the neighboring cell meets the Qos requirement of the SL service (for example, the V2X service) according to the information 7.
  • the SL service for example, the V2X service
  • the terminal can determine whether the neighboring cell provides the HARQ function of the SL according to the information 8.
  • the terminal can determine whether the neighboring cell adopts the AM mode at the RLC layer of the SL according to the information 9.
  • the terminal can determine the index of the resource pool provided by the neighboring cell according to the information 10, and the index size of the resource pool corresponds to the size of the resource pool. Therefore, the terminal can indirectly determine the size of the resource pool provided by the neighboring cell according to the information 10.
  • the terminal may determine the resource pool with the lowest CBR in at least one SL resource pool of the neighboring cell according to the information 11.
  • the terminal can determine whether there is a synchronization reference source in the neighboring cell according to the information 12.
  • the terminal can determine the SL resource configuration of the neighboring cell according to the information 13.
  • the terminal can determine the SLRB configuration provided by the neighboring cell according to the information 14.
  • the terminal can determine the synchronization reference source provided by the neighboring cell according to the information 15.
  • the SL configuration information of the neighboring cell includes one or more of information 1 to information 15.
  • step 303 may include: when the terminal is configured When transmitting services on the SL, the terminal determines the frequency used by the neighboring cell that meets the service requirements in the neighboring cell according to the SL configuration information of the neighboring cell as the frequency with the highest priority.
  • the terminal determines the frequency point with the highest priority according to one or more of information 1 to information 6 in the SL configuration information of the neighboring cell. If there are multiple frequency points with the highest priority, the relative priority of the frequency point with the highest priority is determined according to one or more of information 7 to information 15. Specifically, when the terminal is configured to transmit services on the SL According to one or more of information 7 to information 15 in the SL configuration information of the neighboring cell, the terminal determines that the neighboring cell that meets the service requirements in the neighboring cell has a higher relative priority in the frequency point set with the highest priority. This possible implementation can more accurately determine the priority of the frequency points adopted by the neighboring cell.
  • the neighboring cell meeting the business requirements can mean that the SL configuration information of the neighboring cells meets N1 (N1 is greater than 0) in the M1 requirements.
  • N1 An integer less than or equal to M1) requirements.
  • the value of N1 can be preset or predefined or stipulated by agreement or determined according to the value of M1. For example, when the SL configuration information of the neighboring cell meets all the requirements in the M1 item, the neighboring cell meets the business requirements. For another example, when the SL configuration information of the neighboring cell meets any of the requirements of the M1 requirements, the neighboring cell meets the service requirements.
  • the terminal judges that the neighboring cell can provide the SLRB configuration using RLC AM, and then it is considered that the neighboring cell can meet the service requirements of the terminal.
  • the auxiliary information of the neighboring cell may be included in the system information, and the auxiliary information of the neighboring cell may include one or more of the aforementioned information 7 to information 15.
  • the terminal determines the frequency point with the highest priority according to one or more of information 1 to information 6 in the SL configuration information of the neighboring cell, and then according to information 7 to information 15 Determine one or more adjacent cells corresponding to the frequency point with the highest priority that do not meet the business requirements, and remove the frequency points used by the adjacent cells that do not meet the business requirements from the frequency point with the highest priority. Or remove the neighboring cells that do not meet the service requirements from the candidate list (candidate list, that is, the list of cells that meet the S criterion).
  • the neighboring cell does not meet the business requirements can mean: the SL configuration information of the neighboring cell does not meet the M2 requirements N2 (N2 is An integer greater than 0 and less than or equal to M2) requirements.
  • the value of N2 can be preset or predefined or stipulated by agreement or determined according to the value of M2. For example, when the SL configuration information of the neighboring cell does not meet all the requirements in the M2 item, the neighboring cell does not meet the service requirements. For another example, when the SL configuration information of the neighboring cell does not meet any of the requirements of the M2 requirements, the neighboring cell does not meet the service requirements.
  • the terminal judges that the neighboring cell cannot provide the SLRB configuration using RLC AM according to the SL configuration information of a certain neighboring cell, it is considered that the neighboring cell does not meet the service requirements of the terminal.
  • the main difference between the second embodiment and the first embodiment is that in the first embodiment, the terminal obtains the SL configuration information of the neighboring cell through the neighboring cell, while in the second embodiment, the terminal obtains the SL configuration information of the neighboring cell through the first cell.
  • the communication method provided in the second embodiment includes:
  • system information includes SL configuration information of neighboring cells, where SL is a direct communication link between two terminals.
  • the system information may be generated by the network device to which the first cell belongs (or the network device that provides the first cell), or it may be generated by the first cell.
  • the first cell generation is used as an example for drawing .
  • the SL configuration information of the neighboring cell includes one or more of the following information:
  • the first cell obtains the SL configuration information of the neighboring cell through an interface between the network device to which the first cell belongs and the network device to which the neighboring cell belongs.
  • the network device to which the first cell belongs passes through the interface between the network device to which the neighboring cell belongs (when both network devices are eNBs, the interface can be an X2 interface, and when both network devices are gNB, or one When the network device is a gNB and the other network device is an ng-eNB, the interface may be an Xn interface) to obtain the SL configuration information of one or more neighboring cells.
  • the network device to which the neighboring cell belongs also sends the updated SL configuration information to the network device to which the first cell belongs through the interface.
  • the first cell sends system information to a terminal located in the first cell, and correspondingly, the terminal receives system information from the first cell.
  • the first cell may send the system information including the SL configuration information of the multiple neighboring cells to the terminal.
  • the terminal determines the priority of the frequency point used by the neighboring cell according to the SL configuration information of the neighboring cell.
  • step 403 when the information contained in the SL configuration information of the neighboring cell is different, the implementation of step 403 is also different. For details, refer to Case 1 to Case 4 in Embodiment 1.
  • the method further includes:
  • the terminal performs cell reselection according to the priority of the frequency point adopted by the neighboring cell.
  • the first cell can send system information containing the SL configuration information of the neighboring cell to the terminal.
  • the terminal performing SL communication can directly obtain the SL configuration information of the neighboring cell without staying in
  • the neighboring cell can facilitate the terminal to perform cell reselection according to the SL configuration information of the neighboring cell (that is, the above problem 1 can be solved).
  • the terminal does not need to read the SIB carrying the NR SL configuration and/or the LTE SL configuration, which can avoid increasing the power consumption of the terminal (that is, the above problem 2 can be solved).
  • the terminal may determine the priority of the frequency point used by the neighboring cell according to the SL configuration information of the neighboring cell, so as to perform cell reselection. For example, the terminal may set the priority of the frequency adopted by the neighboring cell that meets the SL communication requirement to a higher priority, so as to ensure that the cell reselected by the terminal meets the terminal's SL communication requirement.
  • step 402 when step 402 is specifically implemented, it includes: the first cell sends system information to the terminal in an on-demand or non-on-demand manner.
  • the terminal receives system information from the first cell in an on-demand or non-on-demand manner.
  • step 402 may specifically include: the terminal sends a request message to the first cell, the request message is used to request the SL configuration information of the neighboring cell; the first cell receives from the terminal The request message sends system information to the terminal according to the request message, and the terminal receives the system information from the first cell.
  • the system information may be a system information block (for example, intra-frequency cell reselection SIB (for example, SIB3), inter-frequency cell reselection SIB (for example, SIB4), or V2X-SIB, etc.) sent in an on-demand manner.
  • SIB intra-frequency cell reselection SIB
  • SIB4 inter-frequency cell reselection SIB
  • V2X-SIB V2X-SIB
  • step 402 may specifically include: the first cell directly sends the system information to the terminal, and the terminal directly receives the system information from the first cell.
  • the system information may be a system information block (for example, MIB, MIB-SL-V2X, SIB1, etc.) that cannot be sent in an on-demand manner.
  • the SL configuration information of the neighboring cell includes one or more of the following information:
  • Radio link control radio link control
  • AM acknowledged mode
  • the terminal can determine whether the SLRB configuration provided by the neighboring cell meets the Qos requirement of the SL service (for example, the V2X service) according to the information 7.
  • the SL service for example, the V2X service
  • the terminal can determine whether the neighboring cell provides the HARQ function of the SL according to the information 8.
  • the terminal can determine whether the neighboring cell adopts the AM mode at the RLC layer of the SL according to the information 9.
  • the terminal can determine the index of the resource pool provided by the neighboring cell according to the information 10, and the index size of the resource pool corresponds to the size of the resource pool. Therefore, the terminal can indirectly determine the size of the resource pool provided by the neighboring cell according to the information 10.
  • the terminal may determine the resource pool with the lowest CBR in at least one SL resource pool of the neighboring cell according to the information 11.
  • the terminal can determine whether there is a synchronization reference source in the neighboring cell according to the information 12.
  • the terminal can determine the SL resource configuration of the neighboring cell according to the information 13.
  • the terminal can determine the SLRB configuration provided by the neighboring cell according to the information 14.
  • the terminal can determine the synchronization reference source provided by the neighboring cell according to the information 15.
  • the SL configuration information of the neighboring cell includes one or more of information 1 to information 15.
  • step 303 may include: when the terminal is configured When transmitting services on the SL, the terminal determines the frequency used by the neighboring cell that meets the service requirements in the neighboring cell according to the SL configuration information of the neighboring cell as the frequency with the highest priority.
  • the terminal determines the frequency point with the highest priority according to one or more of information 1 to information 6 in the SL configuration information of the neighboring cell. If there are multiple frequency points with the highest priority, the relative priority of the frequency point with the highest priority is determined according to one or more of information 7 to information 15. Specifically, when the terminal is configured to transmit services on the SL According to one or more of information 7 to information 15 in the SL configuration information of the neighboring cell, the terminal determines that the neighboring cell that meets the service requirements in the neighboring cell has a higher relative priority in the frequency point set with the highest priority. This possible implementation can more accurately determine the priority of the frequency points adopted by the neighboring cell.
  • the neighboring cell meeting the business requirements can mean that the SL configuration information of the neighboring cells meets N1 in the M1 requirements (N1 is greater than 0).
  • the value of N1 can be preset or predefined or stipulated by agreement or determined according to the value of M1. For example, when the SL configuration information of the neighboring cell meets all the requirements in the M1 item, the neighboring cell meets the business requirements. For another example, when the SL configuration information of the neighboring cell meets any of the requirements of the M1 requirements, the neighboring cell meets the service requirements.
  • the terminal judges that the neighboring cell can provide the SLRB configuration using RLC AM, and then it is considered that the neighboring cell can meet the service requirements of the terminal.
  • the auxiliary information of the neighboring cell may be included in the system information, and the auxiliary information of the neighboring cell may include one or more of the aforementioned information 7 to information 15.
  • the terminal determines the frequency point with the highest priority according to one or more of information 1 to information 6 in the SL configuration information of the neighboring cell, and then according to information 7 to information 15 Determine one or more adjacent cells corresponding to the frequency point with the highest priority that do not meet the business requirements, and remove the frequency points used by the adjacent cells that do not meet the business requirements from the frequency point with the highest priority. Or remove the neighboring cells that do not meet the service requirements from the candidate list (candidate list, that is, the list of cells that meet the S criterion).
  • the neighboring cell does not meet the business requirements can mean: the SL configuration information of the neighboring cell does not meet the M2 requirements N2 (N2 is An integer greater than 0 and less than or equal to M2) requirements.
  • the value of N2 can be preset or predefined or stipulated by agreement or determined according to the value of M2. For example, when the SL configuration information of the neighboring cell does not meet all the requirements in the M2 item, the neighboring cell does not meet the service requirements. For another example, when the SL configuration information of the neighboring cell does not meet any of the requirements of the M2 requirements, the neighboring cell does not meet the service requirements.
  • the terminal judges that the neighboring cell cannot provide the SLRB configuration using RLC AM according to the SL configuration information of a certain neighboring cell, it is considered that the neighboring cell does not meet the service requirements of the terminal.
  • the neighboring cell or the first cell sends system information to the terminal, and the terminal determines whether the neighboring cell meets service requirements according to the system information.
  • the communication method provided in the third embodiment includes:
  • a terminal receives system information.
  • the system information includes SL configuration information of a neighboring cell.
  • SL is a direct communication link between two terminals.
  • the terminal can receive one system information, which can include the SL configuration information of multiple neighboring cells, or the terminal can receive multiple system information, and one system information includes one or more neighboring cells.
  • SL configuration information can also be a system information block.
  • the SL configuration information of the neighboring cell includes one or more of the following information:
  • the terminal determines whether the neighboring cell meets service requirements according to the SL configuration information of the neighboring cell.
  • the terminal performing SL communication can obtain the SL configuration information of the neighboring cell, and can determine whether the neighboring cell meets the service requirements according to the SL configuration information of the neighboring cell. In this case, the terminal can be reselected to meet the service requirements This prevents subsequent connection establishment or connection restoration, avoids increasing the power consumption of the terminal, and can also improve service transmission performance and continuity (that is, the above problem 3 can be solved).
  • step 501 when specifically implemented, it can be implemented in the following manner one or two.
  • Method 1 Generate system information, and send the system information to the terminal in a non-on-demand manner, and the terminal receives the system information from the neighboring cell in a non-on-demand manner.
  • the system information can be generated by the network device to which the neighboring cell belongs (or the network device that provides the neighboring cell), or it can be generated by the neighboring cell.
  • the first method may include: the neighboring cell sends system information directly to the terminal, and the terminal directly receives system information from the neighboring cell.
  • the non-on-demand mode is the broadcast mode
  • the neighboring cell broadcasts system information
  • the terminal receives the system information broadcasted by the neighboring cell.
  • the system information may be a system information block that cannot be sent in an on-demand manner (for example, MIB, MIB-SL-V2X, SIB1, etc.).
  • the information used to indicate part or all of the information is part or all of the information in the system information (for example, SIB28 and/or SIB29) used to carry SL configuration information)
  • the system information (for example, MIB, MIB-SL-V2X, or SIB1) put in this application is sent to the terminal, so that the terminal can obtain some information that cannot be obtained in a non-on-demand manner.
  • the information used to indicate part or all of the information may be information that directly indicates the part or all of the information, or may be information that indirectly indicates the part or all of the information, and this application is not limited.
  • Manner 2 The first cell generates system information and sends the system information to the terminal, and the terminal receives the system information from the first cell.
  • the system information may be generated by the network device to which the first cell belongs (or the network device that provides the first cell), or may be generated by the first cell.
  • the second method includes in specific implementation: the first cell sends system information to the terminal in an on-demand manner or a non-on-demand manner.
  • the terminal receives system information from the first cell in an on-demand or non-on-demand manner.
  • step 501 specifically includes: the terminal sends a request message to the first cell, the request message is used to request the SL configuration information of the neighboring cell; the first cell receives the request from the terminal Message, and send system information to the terminal according to the request message, and the terminal receives the system information from the first cell.
  • the system information may be a system information block (for example, intra-frequency cell reselection SIB (for example, SIB3), inter-frequency cell reselection SIB (for example, SIB4), or V2X-SIB, etc.) sent in an on-demand manner.
  • SIB intra-frequency cell reselection SIB
  • SIB4 inter-frequency cell reselection SIB
  • V2X-SIB V2X-SIB
  • step 501 specifically includes: the first cell directly broadcasts the system information, and the terminal directly receives the system information from the first cell.
  • the system information may be a system information block (for example, MIB, MIB-SL-V2X, SIB1, etc.) that cannot be sent in an on-demand manner.
  • the first cell obtains the SL configuration information of the neighboring cell through the interface between the network device to which the first cell belongs and the network device to which the neighboring cell belongs.
  • the network device to which the first cell belongs passes through the interface between the network device to which the neighboring cell belongs (when both network devices are eNBs, the interface can be an X2 interface, and when both network devices are gNB, or one When the network device is a gNB and the other network device is an ng-eNB, the interface may be an Xn interface) to obtain the SL configuration information of one or more neighboring cells.
  • the network device to which the neighboring cell belongs also sends the updated SL configuration information to the network device to which the first cell belongs through the interface.
  • the method further includes any one of the following methods.
  • Method 1 When the SL configuration information of the neighboring cell does not meet the service requirements, the terminal does not preferentially reselect to the neighboring cell.
  • the terminal avoids reselecting to the neighboring cell. Specifically, the terminal may add the neighboring cell that does not meet the service requirements to the blacklist or not be a candidate cell.
  • Method 3 The terminal removes the neighbor cells whose SL configuration information does not meet the business requirements from the first candidate cell list (for example, moves to the temp remove list), and obtains the second candidate cell list; 2. If the number of cells in the candidate cell list is greater than 0, the terminal performs cell reselection in the second candidate cell list; if the number of cells in the second candidate cell list is equal to 0, the terminal adds the removed cell to the second candidate cell list.
  • Candidate cell list that is, move all the neighboring cells in the temp remove list back to the candidate list, and perform cell reselection in the second candidate cell list after adding the cell.
  • Method 4 The terminal adds the neighboring cells whose SL configuration information in the first candidate cell list meets service requirements to the second candidate cell list; if the number of cells in the second candidate cell list is greater than 0, the terminal is in the second candidate cell list If the number of cells in the second candidate cell list is equal to 0, the terminal performs cell reselection in the first candidate cell list.
  • the neighboring cell does not meet the business requirements may mean that the SL configuration information of the neighboring cell does not meet the M2 requirements
  • N2 is an integer greater than 0 and less than or equal to M2 item requirements.
  • the value of N2 can be preset or predefined or stipulated by agreement or determined according to the value of M2. For example, when the SL configuration information of the neighboring cell does not meet all the requirements in the M2 item, the neighboring cell does not meet the service requirements. For another example, when the SL configuration information of the neighboring cell does not meet any of the requirements of the M2 requirements, the neighboring cell does not meet the service requirements.
  • the terminal judges that the neighboring cell cannot provide the SLRB configuration using RLC AM according to the SL configuration information of a certain neighboring cell, it is considered that the neighboring cell does not meet the service requirements of the terminal.
  • the terminal is configured to use the first RAT for SL communication, but the neighboring cell only provides the SL resource configuration using the second RAT, it is considered that the neighboring cell does not meet the service requirements of the terminal.
  • the terminal has SL communication capability and the terminal is configured to perform SL communication, but the neighboring cell does not provide SL resource configuration, it is considered that the neighboring cell does not meet the service requirements of the terminal.
  • the neighboring cell meeting the business requirements can mean that the SL configuration information of the neighboring cells meets N1 in the M1 requirements (N1 is greater than 0 and less than 0).
  • the value of N1 can be preset or predefined or stipulated by agreement or determined according to the value of M1. For example, when the SL configuration information of the neighboring cell meets all the requirements in the M1 item, the neighboring cell meets the business requirements. For another example, when the SL configuration information of the neighboring cell meets any of the requirements of the M1 requirements, the neighboring cell meets the service requirements.
  • the terminal judges that the neighboring cell can provide the SLRB configuration using RLC AM, and then it is considered that the neighboring cell can meet the service requirements of the terminal.
  • the terminal is configured to use both the first RAT for SL communication and the second RAT for SL communication
  • the neighboring cell provides both the SL resource configuration using the first RAT and the SL resource configuration using the second RAT. It is considered that the neighboring area meets the service requirements of the terminal.
  • the terminal has SL communication capabilities and the terminal is configured to perform SL communication, and the neighboring cell also provides SL resource configuration, it is considered that the neighboring cell meets the service requirements of the terminal.
  • the terminal may perform the different methods in the above-mentioned method 1 to method 4. For example, when one or more of information 1 to information 6 in the SL configuration information of the neighboring cell is used as a basis for the terminal cell reselection, the terminal may perform the above method 1 or method 2. For another example, when one or more of information 7 to information 12 in the SL configuration information of the neighboring cell is used as the basis for the terminal cell reselection, the terminal can execute the above method 3 or method 4.
  • the terminal may perform the above method 1 or method 2.
  • the terminal may perform the above method 3 or method 4.
  • the information in the SL configuration information may belong to different information groups, for example, information 1 to information 6 belong to one information group, and information 7 to information 12 belong to another information group, and different information groups correspond to different methods.
  • the first information group adopts method 1
  • the second information group adopts method 3.
  • the candidate cells can be screened for the first time according to the first information group using method 1, and then the first screening
  • the latter set of cells is screened for the second time using Method 3 according to the second information group.
  • cell reselection is performed according to the prior art.
  • the neighboring cell or the first cell sends system information to the terminal, and the terminal determines whether the neighboring cell meets service requirements based on part of the information in the system information, and then determines the frequency point of each neighboring cell in the determined neighboring cell. priority.
  • the communication method provided in the fourth embodiment includes:
  • the terminal receives system information.
  • the system information includes the SL configuration information of the neighboring cell, and the SL is a direct communication link between the two terminals.
  • the terminal can receive one system information, which can include the SL configuration information of multiple neighboring cells, or the terminal can receive multiple system information, and one system information includes the SL configuration of one neighboring cell. information.
  • the SL configuration information of the neighboring cell includes one or more of the following information:
  • Embodiment 1 For the related description of the information included in the SL configuration information of the neighboring cell, refer to Embodiment 1, and will not be repeated.
  • the terminal determines whether the neighboring cell meets service requirements according to the SL configuration information of the neighboring cell.
  • the terminal performing SL communication can obtain the SL configuration information of the neighboring cell, and can determine whether the neighboring cell meets the service requirements according to the SL configuration information of the neighboring cell. In this case, the terminal can be reselected to meet the service requirements This prevents subsequent connection establishment or connection restoration, avoids increasing the power consumption of the terminal, and can also improve service transmission performance and continuity (that is, the above problem 3 can be solved).
  • step 601 can refer to the specific implementation of step 501, which will not be described in detail.
  • the method may further include any one of method 1 to method 4 in the third embodiment, and details are not described herein again.
  • the system information also includes auxiliary information of the neighboring cell, and the auxiliary information of the neighboring cell includes one or more of the following information:
  • the terminal can determine the neighboring cell in the candidate cell list that does not meet the business requirements (denoted as target) according to one or more of the information 1 to 6 Neighboring cell), and determine the priority of the frequency points used by neighboring cells other than the target neighboring cell in the neighboring cell based on the auxiliary information of the neighboring cell. For example, according to the auxiliary information of the neighboring cell, the neighboring cell except the target neighboring cell The frequency used by the neighboring cell that meets the service requirements in the neighboring cells outside the neighboring cell is determined as the frequency with the highest priority.
  • the terminal may determine, according to the auxiliary information of the neighboring cells, the frequency point used by the neighboring cell that satisfies the most service requirements among the neighboring cells other than the target neighboring cell as the frequency point with the highest priority. For example, if there are 8 neighboring cells, they are recorded as neighboring cell 1 to neighboring cell 8. The terminal determines that neighboring cell 5 to neighboring cell 8 do not meet the business requirements according to the SL configuration information. At this time, the terminal determines the neighboring cell based on the auxiliary information of the neighboring cell 1 to the priority of the frequency points used in the neighboring cell 4.
  • the auxiliary information of the neighboring cell 4 meets the most service requirements (for example, the service requirements of the terminal include 4 requirements, and the auxiliary information of the neighboring cell 4 can meet these 4 requirements
  • the other neighboring cells can only meet 2 of the 4 requirements.
  • the auxiliary information of neighboring cell 4 meets the most service requirements
  • the frequency used by neighboring cell 4 is determined as the frequency with the highest priority .
  • the terminal can determine the frequency point of the neighboring cell (denoted as the target neighboring cell) in the candidate cell list that meets the service requirements in the candidate cell list according to one or more of the information 1 to information 6, and Determine the priority of the frequency used by the neighboring cell in the target neighboring cell based on the auxiliary information of the neighboring cell. For example, determine the frequency used by the neighboring cell whose auxiliary information in the target neighboring cell meets the most business needs as the highest priority Frequency.
  • the terminal determines that neighboring cell 5 to neighboring cell 8 meet the business requirements according to the SL configuration information.
  • the auxiliary information of neighboring cell 5 meets the most services If required, the frequency point adopted by the neighboring area 5 is determined as the frequency point with the highest priority.
  • cell reselection after determining the priority of the frequency adopted by the neighboring cell, cell reselection can be performed according to the priority of the frequency adopted by the neighboring cell. For details, see The existing technology will not be repeated.
  • the methods provided in the first to fourth embodiments of this application can be applied to V2X communication scenarios, and can also be applied to other SL communication scenarios.
  • the information related to V2X in this application is replaced with corresponding information in other SL communication scenarios That is, for example, MIB-SL-V2X can be replaced with MIB in other SL communication scenarios.
  • the SL configuration information of the neighboring cell in the embodiment of this application can also be carried in other information besides system information.
  • system information for example, in dedicated signaling, this application only uses system information as an example for illustration, but this should not be It is considered to be a limitation of this application.
  • each network element for example, a network device and a terminal, includes a hardware structure and/or software module corresponding to each function.
  • the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a certain function is executed by hardware or computer software-driven hardware depends on the specific application and design constraint conditions of the technical solution. Professionals and technicians can use different methods for each specific application to implement the described functions, but such implementation should not be considered beyond the scope of this application.
  • the embodiment of the present application may divide the network device and the terminal into functional units according to the foregoing method examples.
  • each functional unit may be divided corresponding to each function, or two or more functions may be integrated into one processing unit.
  • the above-mentioned integrated unit can be implemented in the form of hardware or software functional unit. It should be noted that the division of units in the embodiments of the present application is illustrative, and is only a logical function division, and there may be other division methods in actual implementation.
  • FIG. 7 shows a possible structural diagram of the communication device (denoted as the communication device 70) involved in the above-mentioned embodiment.
  • the communication device 70 includes a processing unit 701 and a communication unit 702. , May also include a storage unit 703.
  • the schematic structural diagram shown in FIG. 7 may be used to illustrate the structure of the network device or terminal involved in the foregoing embodiment.
  • the network device may provide the above-mentioned first cell and/or neighboring cell.
  • the communication device 70 when the communication device 70 is used to indicate the terminal in the foregoing embodiment, the communication device 70 may perform the actions shown in one or more of the following Embodiment 1, Embodiment 2 and Embodiment 3.
  • the communication device 70 when the communication device 70 is used to indicate the network device in the above-mentioned embodiment and the network device provides a neighboring area, the communication device 70 can perform the actions shown in the following embodiment 4 and/or embodiment 6.
  • the communication apparatus 70 may perform the actions shown in Embodiment 5 and/or Embodiment 7 below.
  • the communication unit is configured to receive system information from a neighboring cell of the first cell in a non-on-demand manner, and the system information includes side link configuration information of the neighboring cell, and the side link
  • the path is a direct communication link between the communication device and other communication devices;
  • the processing unit is configured to determine the priority of the frequency point used by the neighboring cell according to the side link configuration information of the neighboring cell .
  • the communication unit is specifically configured to receive the system information directly from the neighboring cell.
  • the side link configuration information of the neighboring cell includes one or more of the following information: whether the neighboring cell provides side link resource configuration information; Whether the neighboring cell provides only anchor point carrier information; whether the neighboring cell provides information about the sidelink resource configuration using the first radio access technology; whether the neighboring cell provides information using the second radio access technology Side link resource configuration information; whether the neighboring cell only provides anchor point carrier information for the side link that adopts the first radio access technology; the neighboring cell is about adopting the second radio access technology Whether the side link of the technology only provides information about the anchor carrier.
  • the communication unit is configured to receive system information from a first cell, where the system information includes side link configuration information of neighboring cells of the first cell, and the side link is the
  • the side link configuration information of the neighboring cell includes one or more of the following information: whether the neighboring cell provides information on the side link resource configuration ; Whether the neighboring cell provides only anchor point carrier information; whether the neighboring cell provides information on the sidelink resource configuration using the first wireless access technology; whether the neighboring cell provides the second wireless access technology Information about the side link resource configuration; whether the neighboring cell only provides anchor point carrier information for the side link using the first radio access technology; the neighboring cell is Whether the side link of the incoming technology only provides anchor point carrier information; the processing unit is configured to determine the priority of the frequency point adopted by the neighboring cell according to the side link configuration information of the neighboring cell.
  • the communication unit is specifically configured to receive system information from the first cell in an on-demand or non-on-demand manner.
  • the communication unit is specifically configured to send a request message to the first cell, and the request message is used to request side link configuration information of the neighboring cell ; Receive the system information from the first cell.
  • the communication unit is specifically configured to receive the system information directly from the first cell.
  • the first cell obtains the side row of the neighboring cell through the interface between the network device to which the first cell belongs and the network device to which the neighboring cell belongs. Link configuration information.
  • the side link resource configuration includes a carrier inner uplink resource configuration and/or an inter-carrier side link resource configuration.
  • the carrier inner uplink resource configuration of the adjacent cell refers to the side uplink of the same frequency as the frequency adopted by the adjacent cell Resource configuration, or side link resource configuration on the same carrier as the carrier used by the neighboring cell;
  • the inter-carrier side link resource configuration of the neighboring cell refers to a frequency point different from the frequency used by the neighboring cell.
  • the processing unit is specifically configured to: determine that the neighboring cell provides a side link according to the side link configuration information of the neighboring cell In the case of resource allocation, the frequency point adopted by the neighboring cell is determined as the frequency point with the highest priority.
  • the communication device satisfies one or more of the following conditions: the communication device has side link communication capability, and the communication device is configured Perform side-link communication, and the communication device is authorized to perform side-link communication.
  • the processing unit is specifically configured to: when the communication device is configured to both use the first radio access technology to perform sidelink Communication, when the second wireless access technology is also used for side-link communication, it will provide both the side-link resource configuration using the first wireless access technology and the second wireless access technology.
  • the frequency point used by the neighboring cell in the side link resource configuration of the access technology is determined to be the frequency point with the highest priority; or, when the communication device is configured to use only the first wireless access technology for side traffic In the case of link communication, the frequency used by the neighboring cell that provides the side link resource configuration using the first wireless access technology is determined as the frequency with the highest priority; or, in the communication device In the case of being configured to use only the second wireless access technology for sidelink communication, the frequency used by the neighboring cell using the sidelink resource configuration of the second wireless access technology is determined as The frequency point with the highest priority.
  • the communication device is configured to not only use the first wireless access technology for sidelink communication, but also use the second wireless
  • the communication device meets one or more of the following conditions: the communication device is capable of both using the first wireless access technology for side-link communication, and The ability to use the second wireless access technology for side-link communication; the communication device is authorized to perform side-link communication using the first wireless access technology and the second wireless access technology;
  • the communication device satisfies one or more of the following conditions: The first wireless access technology is capable of performing side-link communication, and the communication device is authorized to perform side-link communication using the first wireless access technology; or, when the communication device is configured to only use When the second wireless access technology performs side-link communication, the communication device satisfies one or more of the following conditions: the communication device is capable of performing side-link communication using
  • one bit is used to indicate whether the neighboring cell provides sidelink resource configuration, and/or one bit is used to indicate whether the neighboring cell Only the anchor carrier is provided.
  • 2 bits are used to indicate whether the neighboring cell provides the first wireless access technology and/or the second wireless access technology. Side link resource configuration.
  • the side link resource configuration includes a side link transmission resource configuration, and/or a side link reception resource configuration.
  • the neighboring cell does not provide side link resource configuration means that the neighboring cell does not provide side link resource configuration through system information, nor does it pass Dedicated signaling provides side link resource configuration.
  • the neighboring cell does not provide sidelink resource configuration, which means that the neighboring cell does not provide sidelink resource configuration through system information, but uses dedicated information. Order to provide side link resource configuration.
  • the side link configuration information of the neighboring cell includes one or more of the following information: the side link radio provided by the neighboring cell The index of the QoS configuration file corresponding to the bearer configuration; whether the neighboring cell has information about the HARQ-enabled side link radio bearer configuration; whether the neighboring cell has information about the side link radio bearer configuration using RLC AM; The index of the side link resource pool provided by the neighboring cell; the lowest CBR index of the side link resource pool provided by the neighboring cell; whether the neighboring cell has the information of the synchronization reference source configuration; the side link provided by the neighboring cell Path resource configuration; side link radio bearer configuration provided by the neighboring cell; synchronization reference source configuration provided by the neighboring cell.
  • the processing unit is specifically configured to: when the communication device is configured to transmit services on the side link, according to the neighboring cell
  • the side link configuration information in the neighboring cell determines the frequency point used by the neighboring cell that meets the service requirement as the frequency point with the highest priority.
  • the communication unit is configured to receive system information, the system information includes side link configuration information of a neighboring cell of the first cell, and the side link configuration information of the neighboring cell includes the following information One or more of: whether the neighboring cell provides side link resource configuration information; whether the neighboring cell only provides anchor point carrier information; whether the neighboring cell provides the side link using the first radio access technology Link resource configuration information; whether the neighboring cell provides information on the side link resource configuration using the second wireless access technology; whether the neighboring cell is relevant to the side link using the first wireless access technology Provides only anchor carrier information; whether the neighboring cell only provides anchor carrier information for the side link using the second radio access technology; the side link radio bearer configuration provided by the neighboring cell corresponds to QoS configuration file index; whether the neighboring cell has information about HARQ-enabled side link radio bearer configuration; whether the neighboring cell has information about side link radio bearer configuration using RLC AM; the neighboring cell provides The index of the side link resource pool; the lowest CBR index of the side link resource pool provided by
  • the communication unit is specifically configured to receive system information from the neighboring cell in a non-on-demand manner.
  • the communication unit is specifically configured to receive the system information directly from the neighboring cell.
  • the communication unit is specifically configured to receive system information from the first cell.
  • the communication unit is specifically configured to receive the system information from the first cell in an on-demand or non-on-demand manner.
  • the communication unit is specifically configured to send a request message to the first cell, and the request message is used to request side link configuration information of the neighboring cell , And receive the system information from the first cell.
  • the communication unit is specifically configured to receive the system information directly from the first cell.
  • the first cell obtains the side row of the neighboring cell through an interface between the network device to which the first cell belongs and the network device to which the neighboring cell belongs.
  • Link configuration information
  • the side link resource configuration includes a carrier inner uplink resource configuration and/or an inter-carrier side link resource configuration.
  • the carrier inner uplink resource configuration of the adjacent cell refers to the side uplink resource configuration of the same frequency as the frequency adopted by the adjacent cell, or ,
  • the inter-carrier side link resource configuration of the neighboring cell refers to a frequency point different from the frequency used by the neighboring cell Side link resource configuration, or side link resource configuration on the adjacent frequency of the frequency point used by the neighboring cell, or side link resource configuration on a carrier different from the carrier used by the neighboring cell .
  • one bit is used to indicate whether the neighboring cell provides sidelink resource configuration, and/or one bit is used to indicate whether the neighboring cell only provides anchor points Carrier.
  • 2 bits are used to indicate whether the neighboring cell provides a side link using the first radio access technology and/or the second radio access technology Resource allocation.
  • the side link resource configuration includes a side link transmission resource configuration, and/or a side link reception resource configuration.
  • the neighboring cell does not provide side link resource configuration means that the neighboring cell does not provide side link resource configuration through system information, nor does it provide through dedicated signaling. Side link resource configuration.
  • the neighboring cell does not provide side link resource configuration means that the neighboring cell does not provide side link resource configuration through system information, but provides side link resource configuration through dedicated signaling. Uplink resource configuration.
  • the processing unit is specifically configured to: in the case that the side link configuration information of the neighboring cell does not meet the service requirements, not preferentially reselecting to The neighborhood.
  • the processing unit is specifically configured to: avoid reselection to all locations when the side link configuration information of the neighboring cell does not meet the service requirements.
  • the neighboring area is specifically configured to: avoid reselection to all locations when the side link configuration information of the neighboring cell does not meet the service requirements.
  • the processing unit is specifically configured to: remove the neighboring cell whose side link configuration information of the neighboring cell does not meet the service requirements from the first candidate cell list If the number of cells in the second candidate cell list is greater than 0, perform cell reselection in the second candidate cell list; if the second candidate cell list is If the number of cells in is equal to 0, the removed cells are added to the second candidate cell list again, and cell reselection is performed in the second candidate cell list after the cells are added.
  • the processing unit is specifically configured to: add the neighboring cell whose side link configuration information in the first candidate cell list meets the service requirements to the second candidate cell If the number of cells in the second candidate cell list is greater than 0, perform cell reselection in the second candidate cell list; if the number of cells in the second candidate cell list is equal to 0, Cell reselection is performed in the first candidate cell list.
  • the communication unit and the processing unit; the processing unit is configured to generate (for example, generate on the neighboring cell) system information, where the system information includes side link configuration information of the neighboring cell,
  • the side link is a direct communication link between two terminals;
  • the communication unit is configured to send system information to a terminal located in the first cell in a non-on-demand manner on the neighboring cell
  • the side link configuration information of the neighboring cell in the system information is used by the terminal to determine the priority of the frequency point adopted by the neighboring cell.
  • the communication unit is specifically configured to send the system information directly to the terminal on the neighboring cell.
  • the side link configuration information of the neighboring cell includes one or more of the following information: whether the neighboring cell provides side link resource configuration information; Whether the neighboring cell provides only anchor point carrier information; whether the neighboring cell provides information about the sidelink resource configuration using the first radio access technology; whether the neighboring cell provides information using the second radio access technology Side link resource configuration information; whether the neighboring cell only provides anchor point carrier information for the side link that adopts the first radio access technology; the neighboring cell is about adopting the second radio access technology Whether the side link of the technology only provides information about the anchor carrier.
  • the communication unit and the processing unit; the processing unit is configured to generate (for example, generate on the first cell) system information, the system information including side rows of neighboring cells of the first cell Link configuration information, the side link is a direct communication link between two terminals, and the side link configuration information of the neighboring cell includes one or more of the following information: whether the neighboring cell Provides side link resource configuration information; whether the neighboring cell only provides anchor point carrier information; whether the neighboring cell provides side link resource configuration information using the first radio access technology; the neighboring cell Whether to provide information on the side link resource configuration using the second radio access technology; whether the neighboring cell only provides information on the anchor carrier for the side link using the first radio access technology; The area provides information on whether the side link using the second radio access technology only provides anchor point carriers; the communication unit is configured to send information on the first cell to the terminal located in the first cell In the system information, the side link configuration information of the neighboring cell in the system information is used by the terminal to determine the priority of the frequency point adopted by the neighboring cell.
  • the communication unit is specifically configured to send the system information to the terminal in an on-demand or non-on-demand manner on the first cell.
  • the communication unit is specifically configured to receive a request message from the terminal on the first cell, and the request message is used to request the side of the neighboring cell Uplink configuration information, sending the system information to the terminal according to the request message on the first cell.
  • the communication unit is specifically configured to send the system information directly to the terminal on the first cell.
  • the first cell obtains the side row of the neighboring cell through the interface between the network device to which the first cell belongs and the network device to which the neighboring cell belongs. Link configuration information.
  • the side link resource configuration includes a carrier inner uplink resource configuration and/or an inter-carrier side link resource configuration.
  • the carrier inner uplink resource configuration of the adjacent cell refers to the side uplink of the same frequency as the frequency adopted by the adjacent cell Resource configuration, or side link resource configuration on the same carrier as the carrier used by the neighboring cell;
  • the inter-carrier side link resource configuration of the neighboring cell refers to a frequency point different from the frequency used by the neighboring cell.
  • 1 bit is used to indicate whether the neighboring cell provides sidelink resource configuration, and/or 1 bit is used to indicate whether the neighboring cell Only the anchor carrier is provided.
  • 2 bits are used to indicate whether the neighboring cell provides the first wireless access technology and/or the second wireless access technology. Side link resource configuration.
  • the side link resource configuration includes a side link transmission resource configuration, and/or a side link reception resource configuration.
  • the neighboring cell does not provide side link resource configuration means that the neighboring cell does not provide side link resource configuration through system information, nor does it pass Dedicated signaling provides side link resource configuration.
  • the neighboring cell does not provide side link resource configuration means that the neighboring cell does not provide side link resource configuration through system information, but through dedicated Signaling provides side link resource configuration.
  • the side link configuration information of the neighboring cell includes one or more of the following information: the side link radio provided by the neighboring cell The index of the QoS configuration file corresponding to the bearer configuration; whether the neighboring cell has information about the HARQ-enabled side link radio bearer configuration; whether the neighboring cell has information about the side link radio bearer configuration using RLC AM; The index of the side link resource pool provided by the neighboring cell; the lowest CBR index of the side link resource pool provided by the neighboring cell; whether the neighboring cell has the information of the synchronization reference source configuration; the side link provided by the neighboring cell Path resource configuration; side link radio bearer configuration provided by the neighboring cell; synchronization reference source configuration provided by the neighboring cell.
  • the processing unit and the communication unit; the processing unit is configured to generate (for example, generate on the neighboring cell) system information, the system information including the side link configuration of the neighboring cell of the first cell Information, the side link configuration information of the neighboring cell includes one or more of the following information: whether the neighboring cell provides side link resource configuration information; whether the neighboring cell only provides information about anchor carrier ; Whether the neighboring cell provides information about the side link resource configuration using the first radio access technology; whether the neighboring cell provides information about the side link resource configuration using the second radio access technology; the neighbor Whether the area provides only anchor carrier information for the side link using the first radio access technology; whether the neighboring cell provides only anchor carrier information for the side link using the second radio access technology QoS profile index corresponding to the side link radio bearer configuration provided by the neighboring cell; whether the neighboring cell has information about the HARQ-enabled side link radio bearer configuration; whether the neighboring cell uses RLC AM sidelink radio bearer configuration information; the sidelink resource pool index provided by the neighboring cell
  • the communication unit is specifically configured to directly send the system information to the terminal.
  • the processing unit and the communication unit; the processing unit is configured to generate (for example, generate on the first cell) system information, the system information including the side link of the neighboring cell of the first cell Configuration information, the side link configuration information of the neighboring cell includes one or more of the following information: whether the neighboring cell provides side link resource configuration information; whether the neighboring cell provides only anchor carrier information Information; whether the neighboring cell provides information about the side link resource configuration using the first radio access technology; whether the neighboring cell provides information about the side link resource configuration using the second radio access technology; Whether the neighboring cell only provides anchor point carrier information for the side link using the first wireless access technology; whether the neighboring cell only provides anchor point information for the side link using the second wireless access technology Carrier information; the QoS profile index corresponding to the side link radio bearer configuration provided by the neighboring cell; whether the neighboring cell has information about the HARQ-enabled side link radio bearer configuration; whether the neighboring cell uses RLC AM side link radio bearer configuration information; the side link resource pool index provided by
  • the communication unit is specifically configured to send the system information to the terminal in an on-demand or non-on-demand manner on the first cell.
  • the communication unit is specifically configured to receive a request message from the terminal on the first cell, and the request message is used to request the side of the neighboring cell Uplink configuration information, sending the system information to the terminal according to the request message on the first cell.
  • the communication unit is specifically configured to send the system information directly to the terminal on the first cell.
  • the first cell obtains the side row of the neighboring cell through an interface between the network device to which the first cell belongs and the network device to which the neighboring cell belongs.
  • Link configuration information
  • the side link resource configuration includes a carrier inner uplink resource configuration and/or an inter-carrier side link resource configuration.
  • the carrier inner uplink resource configuration of the adjacent cell refers to the side uplink of the same frequency as the frequency adopted by the adjacent cell.
  • the inter-carrier side link resource configuration of the neighboring cell refers to a frequency point different from the frequency used by the neighboring cell.
  • one bit is used to indicate whether the neighboring cell provides sidelink resource configuration, and/or one bit is used to indicate whether the neighboring cell provides Only the anchor carrier is provided.
  • 2 bits are used to indicate whether the neighboring cell provides the first radio access technology and/or the second radio access technology. Side link resource configuration.
  • the side link resource configuration includes a side link transmission resource configuration, and/or a side link reception resource configuration.
  • the neighboring cell does not provide side link resource configuration means that the neighboring cell does not provide side link resource configuration through system information, nor does it pass Dedicated signaling provides side link resource configuration.
  • the neighboring cell does not provide side link resource configuration means that the neighboring cell does not provide side link resource configuration through system information, but through dedicated Signaling provides side link resource configuration.
  • the communication device 70 may be a device or a chip in the device.
  • the processing unit 701 may be a processor or a controller, and the communication unit 702 may be a communication interface, a transceiver, a transceiver, a transceiver circuit, a transceiver, and the like.
  • the communication interface is a general term and may include one or more interfaces.
  • the storage unit 703 may be a memory.
  • the processing unit 701 may be a processor or a controller, and the communication unit 702 may be an input interface and/or an output interface, a pin or a circuit, or the like.
  • the storage unit 703 may be a storage unit (for example, a register, a cache, etc.) in the chip, or a storage unit (for example, a read-only memory, a random access memory, etc.) located outside the chip in the device.
  • the communication unit may also be referred to as a transceiver unit.
  • the antenna and control circuit with the transceiver function in the communication device 70 can be regarded as the communication unit 702 of the communication device 70, and the processor with processing function can be regarded as the processing unit 701 of the communication device 70.
  • the device for implementing the receiving function in the communication unit 702 may be regarded as a receiving unit, which is used to perform the receiving steps in the embodiment of the present application, and the receiving unit may be a receiver, a receiver, a receiving circuit, and the like.
  • the device used for implementing the sending function in the communication unit 702 can be regarded as a sending unit, the sending unit is used to execute the sending steps in the embodiment of the present application, and the sending unit can be a transmitter, a transmitter, a sending circuit, etc.
  • the integrated unit in FIG. 7 is implemented in the form of a software function module and sold or used as an independent product, it can be stored in a computer readable storage medium.
  • the medium includes several instructions to enable a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor to execute all or part of the steps of the methods described in the various embodiments of the present application.
  • Storage media for storing computer software products include: U disk, mobile hard disk, read-only memory (read-only memory, ROM), random access memory (random access memory, RAM), magnetic disks or optical disks, etc., which can store program codes Medium.
  • the unit in FIG. 7 may also be referred to as a module, for example, the processing unit may be referred to as a processing module.
  • the embodiment of the present application also provides a schematic diagram of the hardware structure of a communication device (denoted as a communication device 80).
  • the communication device 80 includes a processor 801, and optionally, a communication device connected to the processor 801. ⁇ Memory 802.
  • the processor 801 may be a general-purpose central processing unit (central processing unit, CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more programs for controlling the execution of the program of the application. integrated circuit.
  • the processor 801 may also include multiple CPUs, and the processor 801 may be a single-CPU processor or a multi-CPU processor.
  • the processor here may refer to one or more devices, circuits, or processing cores for processing data (for example, computer program instructions).
  • the memory 802 may be a ROM or other types of static storage devices that can store static information and instructions, RAM, or other types of dynamic storage devices that can store information and instructions, or an electrically erasable programmable read-only memory (electrically erasable programmable read-only memory).
  • read-only memory EEPROM
  • compact disc read-only memory, CD-ROM
  • optical disc storage including compact discs, laser discs, optical discs, digital universal discs, Blu-ray discs, etc.
  • magnetic disks A storage medium or other magnetic storage device, or any other medium that can be used to carry or store desired program codes in the form of instructions or data structures and that can be accessed by a computer, and the embodiment of the present application does not impose any limitation on this.
  • the memory 802 may exist independently, or may be integrated with the processor 801. Wherein, the memory 802 may contain computer program code.
  • the processor 801 is configured to execute the computer program code stored in the memory 802, so as to implement the method provided in the embodiment of the present application.
  • the communication device 80 further includes a transceiver 803.
  • the processor 801, the memory 802, and the transceiver 803 are connected by a bus.
  • the transceiver 803 is used to communicate with other devices or a communication network.
  • the transceiver 803 may include a transmitter and a receiver.
  • the device used for implementing the receiving function in the transceiver 803 can be regarded as a receiver, and the receiver is used to perform the receiving steps in the embodiment of the present application.
  • the device used for implementing the sending function in the transceiver 803 can be regarded as a transmitter, and the transmitter is used to perform the sending steps in the embodiment of the present application.
  • the schematic structural diagram shown in FIG. 8 may be used to illustrate the structure of the network device or terminal involved in the foregoing embodiment.
  • the network device may provide the above-mentioned first cell and/or adjacent cell.
  • the processor 801 is used to control and manage the actions of the network device.
  • the processor 801 is used to support the network device to pass through neighbors.
  • the area executes 301 and 302 in FIG. 3 and/or executes 401 and 402 in FIG. 4 through the first cell, and/or the actions performed by the network device in other processes described in the embodiments of the present application.
  • the processor 801 may communicate with other network entities through the transceiver 803, for example, communicate with the terminal shown in FIG. 3.
  • the memory 802 is used to store program codes and data of the network device.
  • the processor 801 is used to control and manage the actions of the terminal.
  • the processor 801 is used to support the terminal to execute the terminal shown in FIG. 3 302 to 304, 402 to 404 in FIG. 4, 501 and 502 in FIG. 5, 601 and 602 in FIG. 6, and/or actions performed by the terminal in other processes described in the embodiments of the present application.
  • the processor 801 may communicate with other network entities through the transceiver 803, for example, communicate with neighboring cells provided by the network device shown in FIG. 3.
  • the memory 802 is used to store program codes and data of the terminal.
  • the processor 801 includes a logic circuit and an input interface and/or an output interface. Among them, the output interface is used to execute the sending action in the corresponding method, and the input interface is used to execute the receiving action in the corresponding method.
  • the schematic structural diagram shown in FIG. 9 may be used to illustrate the structure of the network device or terminal involved in the foregoing embodiment.
  • the network device may provide the above-mentioned first cell and/or neighboring cell.
  • the processor 801 is used to control and manage the actions of the network device.
  • the processor 801 is used to support the network device to pass through neighbors.
  • the area executes 301 and 302 in FIG. 3 and/or executes 401 and 402 in FIG. 4 through the first cell, and/or the actions performed by the network device in other processes described in the embodiments of the present application.
  • the processor 801 may communicate with other network entities through an input interface and/or an output interface, for example, with the terminal shown in FIG. 3.
  • the memory 802 is used to store program codes and data of the network device.
  • the processor 801 is used to control and manage the actions of the terminal.
  • the processor 801 is used to support the terminal to execute the terminal shown in FIG. 3 302 to 304, 402 to 404 in FIG. 4, 501 and 502 in FIG. 5, 601 and 602 in FIG. 6, and/or actions performed by the terminal in other processes described in the embodiments of the present application.
  • the processor 801 may communicate with other network entities through an input interface and/or an output interface, for example, communication between neighboring cells provided by the network device shown in FIG. 3.
  • the memory 802 is used to store program codes and data of the terminal.
  • the embodiment of the present application also provides a computer-readable storage medium, including instructions, which when run on a computer, cause the computer to execute any of the above-mentioned methods.
  • the embodiments of the present application also provide a computer program product containing instructions, which when run on a computer, cause the computer to execute any of the above-mentioned methods.
  • An embodiment of the present application also provides a communication system, including: the above-mentioned network device and a terminal. Optionally, it also includes the aforementioned terminal.
  • 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 can be implemented in the form of a computer program product in whole or in part.
  • the computer program product includes one or more computer instructions.
  • the computer program instructions When the computer program instructions are loaded and executed on the computer, the processes or functions described in the embodiments of the present application are generated in whole or in part.
  • the computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices.
  • Computer instructions may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium.
  • computer instructions may be transmitted from a website, computer, server, or data center through a cable (such as Coaxial cable, optical fiber, digital subscriber line (digital subscriber line, DSL) or wireless (such as infrared, wireless, microwave, etc.) transmission to another website site, computer, server or data center.
  • the computer-readable storage medium may be any available medium that can be accessed by a computer, or may include one or more data storage devices such as a server or a data center that can be integrated with the medium.
  • the usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, and a magnetic tape), an optical medium (for example, a DVD), or a semiconductor medium (for example, a solid state disk (SSD)).

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Abstract

本申请提供了一种通信方法及装置，涉及通信技术领域，该方法中，第一小区的邻区可以通过非按需方式向终端发送包含邻区的侧行链路配置信息的系统信息，相应的，终端通过非按需方式从邻区接收该系统信息，并根据邻区的侧行链路配置信息确定邻区采用的频点的优先级，该情况下，进行侧行链路通信的终端可以直接在第一小区中获取邻区的侧行链路配置信息，而不需要驻留到邻区，可以方便终端根据邻区的侧行链路配置信息进行小区重选。

Description

通信方法及装置 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及装置。
背景技术
目前，在新无线(new radio，NR)中，一个小区的邻区的用于承载侧行链路(sidelink，SL)配置信息的系统信息块(system information block，SIB)可以通过按需(on-demand)方式提供，当该SIB通过按需方式提供时，基站在接收到终端的请求前不会广播该SIB。该情况下，若该小区中的空闲态(idle)或非激活态(inactive)的终端进行小区重选，就要求该终端驻留到该小区的邻区后才能获取该SIB，进而获取SL配置信息，不利于进行SL通信的终端进行小区重选。
发明内容
本申请实施例提供了一种通信方法及装置，用于提高网络接入成功率。
为达到上述目的，本申请提供了以下技术方案：
第一方面，提供了一种通信方法，包括：终端通过非按需方式从第一小区的邻区接收包括邻区的侧行链路配置信息的系统信息，并根据邻区的侧行链路配置信息确定邻区采用的频点的优先级。其中，侧行链路为终端和其他终端之间的直连通信链路。第一方面提供的方法，邻区可以通过非按需方式向终端发送包含邻区的SL配置信息的系统信息，该情况下，进行SL通信的终端可以直接在第一小区中获取邻区的SL配置信息，而不需要驻留到邻区，可以方便终端根据邻区的SL配置信息进行小区重选，提高网络接入成功率。
结合第一方面，在一种可能的实现方式中，终端通过非按需方式从第一小区的邻区接收系统信息，包括：终端直接从邻区接收系统信息，例如，终端直接从邻区接收邻区广播的系统信息。
结合第一方面，在一种可能的实现方式中，邻区的侧行链路配置信息包括以下信息中的一个或多个：邻区是否提供侧行链路资源配置的信息；邻区是否仅提供锚点载波的信息；邻区是否提供采用第一无线接入技术的侧行链路资源配置的信息；邻区是否提供采用第二无线接入技术的侧行链路资源配置的信息；邻区对于采用第一无线接入技术的侧行链路是否仅提供锚点载波的信息；邻区对于采用第二无线接入技术的侧行链路是否仅提供锚点载波的信息。该可选的方法，终端可以根据邻区的SL资源配置进行小区重选，例如，终端可以选择一个能够提供满足SL通信需求的SL资源配置的邻区，从而保证重选到邻区后的SL通信质量。
第二方面，提供了一种通信方法，包括：终端从第一小区接收包括第一小区的邻区的侧行链路配置信息的系统信息，并根据邻区的侧行链路配置信息确定邻区采用的频点的优先级。其中，侧行链路为终端和其他终端之间的直连通信链路，邻区的侧行链路配置信息包括以下信息中的一个或多个：邻区是否提供侧行链路资源配置的信息；邻区是否仅提供锚点载波的信息；邻区是否提供采用第一无线接入技术的侧行链路资源配置的信息；邻区是否提供采用第二无线接入技术的侧行链路资源配置的信息；邻区对于采用第一无线接入技术的侧行链路是否仅提供锚点载波的信息；邻区对于采用第二无线接入技术的侧行链路 是否仅提供锚点载波的信息。第二方面提供的方法，第一小区可以向终端发送包含邻区的SL配置信息的系统信息，该情况下，进行SL通信的终端可以直接获取邻区的SL配置信息，而不需要驻留到邻区，可以方便终端根据邻区的SL配置信息进行小区重选，提高网络接入成功率。
结合第二方面，在一种可能的实现方式中，终端从第一小区接收系统信息，包括：终端通过按需方式或非按需方式从第一小区接收系统信息。
结合第二方面，在一种可能的实现方式中，终端通过按需方式从第一小区接收系统信息，包括：终端向第一小区发送请求消息，请求消息用于请求邻区的侧行链路配置信息；终端从第一小区接收系统信息。
结合第二方面，在一种可能的实现方式中，终端通过非按需方式从第一小区接收系统信息，包括：终端直接从第一小区接收系统信息。
结合第二方面，在一种可能的实现方式中，第一小区通过第一小区所属的网络设备与邻区所属的网络设备之间的接口获取邻区的侧行链路配置信息。
结合第一方面或第二方面，在一种可能的实现方式中，侧行链路资源配置包括载波内侧行链路资源配置和/或载波间侧行链路资源配置。
结合第一方面或第二方面，在一种可能的实现方式中，邻区的载波内侧行链路资源配置是指与邻区采用的频点相同的频点的侧行链路资源配置，或者，与邻区采用的载波相同的载波上的侧行链路资源配置；邻区的载波间侧行链路资源配置是指与邻区采用的频点不同的频点的侧行链路资源配置，或者，邻区采用的频点的邻频上的侧行链路资源配置，或者，与邻区采用的载波不同的载波上的侧行链路资源配置。
结合第一方面或第二方面，在一种可能的实现方式中，终端根据邻区的侧行链路配置信息确定邻区采用的频点的优先级，包括：在终端根据邻区的侧行链路配置信息确定邻区提供侧行链路资源配置的情况下，终端将邻区采用的频点确定为优先级最高的频点。对于进行侧行链路通信的终端而言，需要侧行链路资源才可以进行侧行链路通信，因此，该可选的方法，将能够提供侧行链路资源配置的邻区采用的频点确定为优先级最高的频点，可以保证重选到邻区后有侧行链路资源可用。
结合第一方面或第二方面，在一种可能的实现方式中，终端满足以下条件中的一个或多个：终端具备侧行链路通信能力，终端被配置进行侧行链路通信，终端被授权进行侧行链路通信。
结合第一方面或第二方面，在一种可能的实现方式中，终端根据邻区的侧行链路配置信息确定邻区采用的频点的优先级，包括：在终端被配置为既采用第一无线接入技术进行侧行链路通信，还采用第二无线接入技术进行侧行链路通信的情况下，终端将既提供采用第一无线接入技术的侧行链路资源配置，还提供采用第二无线接入技术的侧行链路资源配置的邻区采用的频点确定为优先级最高的频点；或者，在终端被配置仅采用第一无线接入技术进行侧行链路通信的情况下，终端将提供采用第一无线接入技术的侧行链路资源配置的邻区采用的频点确定为优先级最高的频点；或者，在终端被配置仅采用第二无线接入技术进行侧行链路通信的情况下，终端将采用第二无线接入技术的侧行链路资源配置的邻区采用的频点确定为优先级最高的频点。该可选的方法，当终端当前被配置为采用某个(或某些)无线接入技术进行侧行链路通信时，终端就将能够提供采用该某个(或某些)无线 接入技术的侧行链路资源配置的邻区采用的频点确定为优先级最高的频点，可以保证重选到邻区后有合适的侧行链路资源可用。
结合第一方面或第二方面，在一种可能的实现方式中，在终端被配置为既采用第一无线接入技术进行侧行链路通信，还采用第二无线接入技术进行侧行链路通信的情况下，终端满足以下条件中的一个或多个：终端具备既采用第一无线接入技术进行侧行链路通信，还采用第二无线接入技术进行侧行链路通信的能力；终端被授权进行采用第一无线接入技术和第二无线接入技术的侧行链路通信；或者，在终端被配置仅采用第一无线接入技术进行侧行链路通信的情况下，终端满足以下条件中的一个或多个：终端具备采用第一无线接入技术进行侧行链路通信的能力，终端被授权进行采用第一无线接入技术的侧行链路通信；或者，在终端被配置仅采用第二无线接入技术进行侧行链路通信的情况下，终端满足以下条件中的一个或多个：终端具备采用第二无线接入技术进行侧行链路通信的能力，终端被授权进行采用第二无线接入技术的侧行链路通信。
结合第一方面或第二方面，在一种可能的实现方式中，通过1个比特指示邻区是否提供侧行链路资源配置，和/或，通过1个比特指示邻区是否仅提供锚点载波。
结合第一方面或第二方面，在一种可能的实现方式中，通过2个比特指示邻区是否提供采用第一无线接入技术和/或第二无线接入技术的侧行链路资源配置。
结合第一方面或第二方面，在一种可能的实现方式中，侧行链路资源配置包括侧行链路发送资源配置，和/或，侧行链路接收资源配置。
结合第一方面或第二方面，在一种可能的实现方式中，邻区不提供侧行链路资源配置表示邻区不通过系统信息提供侧行链路资源配置，也不通过专用信令提供侧行链路资源配置。
结合第一方面或第二方面，在一种可能的实现方式中，邻区不提供侧行链路资源配置表示邻区不通过系统信息提供侧行链路资源配置，但通过专用信令提供侧行链路资源配置。
结合第一方面或第二方面，在一种可能的实现方式中，邻区的侧行链路配置信息包括以下信息中的一个或多个：邻区提供的侧行链路无线承载配置对应的QoS配置文件索引；邻区是否有启用HARQ的侧行链路无线承载配置的信息；邻区是否有采用RLC AM的侧行链路无线承载配置的信息；邻区提供的侧行链路资源池索引；邻区提供的侧行链路资源池最低CBR索引；邻区是否有同步参考源配置的信息；邻区提供的侧行链路资源配置；邻区提供的侧行链路无线承载配置；邻区提供的同步参考源配置。该种可能的实现方式，若终端确定优先级最高的频点有多个时，终端可以根据这些信息确定这些频点的相对优先级，从而更加精准的确定频点的优先级。
结合第一方面或第二方面，在一种可能的实现方式中，终端根据邻区的侧行链路配置信息确定邻区采用的频点的优先级，包括：当终端被配置了在侧行链路上传输业务时，终端根据邻区的侧行链路配置信息将邻区中的满足业务需求的邻区采用的频点确定为优先级最高的频点。该种可能的实现方式，终端将邻区中的满足业务需求的邻区采用的频点确定为优先级最高的频点，从而可以保证重选到邻区后有合适的侧行链路资源可用。
第三方面，提供了一种通信方法，应用于网络设备，网络设备提供第一小区的邻区，该方法包括：生成包括邻区的侧行链路配置信息的系统信息，侧行链路为两个终端之间的 直连通信链路；邻区通过非按需方式向位于第一小区中的终端发送系统信息，系统信息中的邻区的侧行链路配置信息用于终端确定邻区采用的频点的优先级。第三方面提供的方法，邻区可以通过非按需方式向终端发送包含邻区的SL配置信息的系统信息，该情况下，进行SL通信的终端可以直接在第一小区中获取邻区的SL配置信息，而不需要驻留到邻区，可以方便终端根据邻区的SL配置信息进行小区重选，提高网络接入成功率。
结合第三方面，在一种可能的实现方式中，邻区通过非按需方式向位于第一小区中的终端发送系统信息，包括：邻区直接向终端发送系统信息。
结合第三方面，在一种可能的实现方式中，邻区的侧行链路配置信息包括以下信息中的一个或多个：邻区是否提供侧行链路资源配置的信息；邻区是否仅提供锚点载波的信息；邻区是否提供采用第一无线接入技术的侧行链路资源配置的信息；邻区是否提供采用第二无线接入技术的侧行链路资源配置的信息；邻区对于采用第一无线接入技术的侧行链路是否仅提供锚点载波的信息；邻区对于采用第二无线接入技术的侧行链路是否仅提供锚点载波的信息。该可选的方法，终端可以根据邻区的SL资源配置进行小区重选，例如，终端可以选择一个能够提供满足SL通信需求的SL资源配置的邻区，从而保证重选到邻区后的SL通信质量。
第四方面，提供了一种通信方法，应用于网络设备，网络设备提供第一小区，该方法包括：生成包括第一小区的邻区的侧行链路配置信息的系统信息，并向位于第一小区中的终端发送系统信息，系统信息中的邻区的侧行链路配置信息用于终端确定邻区采用的频点的优先级。其中，侧行链路为两个终端之间的直连通信链路，邻区的侧行链路配置信息包括以下信息中的一个或多个：邻区是否提供侧行链路资源配置的信息；邻区是否仅提供锚点载波的信息；邻区是否提供采用第一无线接入技术的侧行链路资源配置的信息；邻区是否提供采用第二无线接入技术的侧行链路资源配置的信息；邻区对于采用第一无线接入技术的侧行链路是否仅提供锚点载波的信息；邻区对于采用第二无线接入技术的侧行链路是否仅提供锚点载波的信息。第四方面提供的方法，第一小区可以向终端发送包含邻区的SL配置信息的系统信息，该情况下，进行SL通信的终端可以直接获取邻区的SL配置信息，而不需要驻留到邻区，可以方便终端根据邻区的SL配置信息进行小区重选，提高网络接入成功率。
结合第四方面，在一种可能的实现方式中，第一小区向位于第一小区中的终端发送系统信息，包括：第一小区通过按需方式或非按需方式向终端发送系统信息。
结合第四方面，在一种可能的实现方式中，第一小区通过按需方式向终端发送系统信息，包括：第一小区从终端接收请求消息，请求消息用于请求邻区的侧行链路配置信息；第一小区根据请求消息向终端发送系统信息。
结合第四方面，在一种可能的实现方式中，第一小区通过非按需方式向终端发送系统信息，包括：第一小区直接向终端发送系统信息。
结合第四方面，在一种可能的实现方式中，第一小区通过第一小区所属的网络设备与邻区所属的网络设备之间的接口获取邻区的侧行链路配置信息。
结合第三方面或第四方面，在一种可能的实现方式中，侧行链路资源配置包括载波内侧行链路资源配置和/或载波间侧行链路资源配置。
结合第三方面或第四方面，在一种可能的实现方式中，邻区的载波内侧行链路资源配 置是指与邻区采用的频点相同的频点的侧行链路资源配置，或者，与邻区采用的载波相同的载波上的侧行链路资源配置；邻区的载波间侧行链路资源配置是指与邻区采用的频点不同的频点的侧行链路资源配置，或者，邻区采用的频点的邻频上的侧行链路资源配置，或者，与邻区采用的载波不同的载波上的侧行链路资源配置。
结合第三方面或第四方面，在一种可能的实现方式中，通过1个比特指示邻区是否提供侧行链路资源配置，和/或，通过1个比特指示邻区是否仅提供锚点载波。
结合第三方面或第四方面，在一种可能的实现方式中，通过2个比特指示邻区是否提供采用第一无线接入技术和/或第二无线接入技术的侧行链路资源配置。
结合第三方面或第四方面，在一种可能的实现方式中，侧行链路资源配置包括侧行链路发送资源配置，和/或，侧行链路接收资源配置。
结合第三方面或第四方面，在一种可能的实现方式中，邻区不提供侧行链路资源配置表示邻区不通过系统信息提供侧行链路资源配置，也不通过专用信令提供侧行链路资源配置。
结合第三方面或第四方面，在一种可能的实现方式中，邻区不提供侧行链路资源配置表示邻区不通过系统信息提供侧行链路资源配置，但通过专用信令提供侧行链路资源配置。
结合第三方面或第四方面，在一种可能的实现方式中，邻区的侧行链路配置信息包括以下信息中的一个或多个：邻区提供的侧行链路无线承载配置对应的QoS配置文件索引；邻区是否有启用HARQ的侧行链路无线承载配置的信息；邻区是否有采用RLC AM的侧行链路无线承载配置的信息；邻区提供的侧行链路资源池索引；邻区提供的侧行链路资源池最低CBR索引；邻区是否有同步参考源配置的信息；邻区提供的侧行链路资源配置；邻区提供的侧行链路无线承载配置；邻区提供的同步参考源配置。该种可能的实现方式，若终端确定优先级最高的频点有多个时，终端可以根据这些信息确定这些频点的相对优先级，从而更加精准的确定频点的优先级。
第五方面，提供了一种通信方法，包括：终端接收包括第一小区的邻区的侧行链路配置信息的系统信息，并根据第一小区的邻区的侧行链路配置信息确定邻区是否满足业务需求。其中，邻区的侧行链路配置信息包括以下信息中的一个或多个：邻区是否提供侧行链路资源配置的信息；邻区是否仅提供锚点载波的信息；邻区是否提供采用第一无线接入技术的侧行链路资源配置的信息；邻区是否提供采用第二无线接入技术的侧行链路资源配置的信息；邻区对于采用第一无线接入技术的侧行链路是否仅提供锚点载波的信息；邻区对于采用第二无线接入技术的侧行链路是否仅提供锚点载波的信息；邻区提供的侧行链路无线承载配置对应的QoS配置文件索引；邻区是否有启用HARQ的侧行链路无线承载配置的信息；邻区是否有采用RLC AM的侧行链路无线承载配置的信息；邻区提供的侧行链路资源池索引；邻区提供的侧行链路资源池最低CBR索引；邻区是否有同步参考源配置的信息；邻区提供的侧行链路资源配置；邻区提供的侧行链路无线承载配置；邻区提供的同步参考源配置。第五方面提供的方法，进行SL通信的终端可以获取邻区的SL配置信息，并可以根据邻区的SL配置信息确定邻区是否满足业务需求，该情况下，终端可以重选到满足业务需求的邻区中，从而防止后续进行连接建立或连接恢复，避免增加终端的功耗，还可以提高业务传输性能和连续性。
结合第五方面，在一种可能的实现方式中，终端接收系统信息，包括：终端通过非按 需方式从邻区接收系统信息。
结合第五方面，在一种可能的实现方式中，终端通过非按需方式从邻区接收系统信息，包括：终端直接从邻区接收系统信息。
结合第五方面，在一种可能的实现方式中，终端接收系统信息，包括：终端从第一小区接收系统信息。
结合第五方面，在一种可能的实现方式中，终端从第一小区接收系统信息，包括：终端通过按需方式或非按需方式从第一小区接收系统信息。
结合第五方面，在一种可能的实现方式中，终端通过按需方式从第一小区接收系统信息，包括：终端向第一小区发送请求消息，请求消息用于请求邻区的侧行链路配置信息；终端从第一小区接收系统信息。
结合第五方面，在一种可能的实现方式中，终端通过非按需方式从第一小区接收系统信息，包括：终端直接从第一小区接收系统信息。
结合第五方面，在一种可能的实现方式中，第一小区通过第一小区所属的网络设备与邻区所属的网络设备之间的接口获取邻区的侧行链路配置信息。
结合第五方面，在一种可能的实现方式中，侧行链路资源配置包括载波内侧行链路资源配置和/或载波间侧行链路资源配置。
结合第五方面，在一种可能的实现方式中，邻区的载波内侧行链路资源配置是指与邻区采用的频点相同的频点的侧行链路资源配置，或者，与邻区采用的载波相同的载波上的侧行链路资源配置；邻区的载波间侧行链路资源配置是指与邻区采用的频点不同的频点的侧行链路资源配置，或者，邻区采用的频点的邻频上的侧行链路资源配置，或者，与邻区采用的载波不同的载波上的侧行链路资源配置。
结合第五方面，在一种可能的实现方式中，通过1个比特指示邻区是否提供侧行链路资源配置，和/或，通过1个比特指示邻区是否仅提供锚点载波。
结合第五方面，在一种可能的实现方式中，通过2个比特指示邻区是否提供采用第一无线接入技术和/或第二无线接入技术的侧行链路资源配置。
结合第五方面，在一种可能的实现方式中，侧行链路资源配置包括侧行链路发送资源配置，和/或，侧行链路接收资源配置。
结合第五方面，在一种可能的实现方式中，邻区不提供侧行链路资源配置表示邻区不通过系统信息提供侧行链路资源配置，也不通过专用信令提供侧行链路资源配置。
结合第五方面，在一种可能的实现方式中，邻区不提供侧行链路资源配置表示邻区不通过系统信息提供侧行链路资源配置，但通过专用信令提供侧行链路资源配置。
结合第五方面，在一种可能的实现方式中，该方法还包括：在邻区的侧行链路配置信息不满足业务需求的情况下，终端不优先重选至邻区。该种可能的实现方式，可以避免重选到不满足业务需求的邻区中。
结合第五方面，在一种可能的实现方式中，该方法还包括：在邻区的侧行链路配置信息不满足业务需求的情况下，终端避免重选至邻区。该种可能的实现方式，可以避免重选到不满足业务需求的邻区中。
结合第五方面，在一种可能的实现方式中，该方法还包括：终端将邻区的侧行链路配置信息不满足业务需求的邻区从第一候选小区列表中移除，得到第二候选小区列 表；若第二候选小区列表中的小区个数大于0，终端在第二候选小区列表中进行小区重选；若第二候选小区列表中的小区个数等于0，终端将移除的小区再添加进第二候选小区列表，并在添加小区后的第二候选小区列表中进行小区重选。该种可能的实现方式，可以避免重选到不满足业务需求的邻区中。
结合第五方面，在一种可能的实现方式中，该方法还包括：终端将第一候选小区列表中的侧行链路配置信息满足业务需求的邻区加入第二候选小区列表中；若第二候选小区列表中的小区个数大于0，终端在第二候选小区列表中进行小区重选；若第二候选小区列表中的小区个数等于0，终端在第一候选小区列表中进行小区重选。该种可能的实现方式，可以避免重选到不满足业务需求的邻区中。第六方面，提供了一种通信方法，应用于网络设备，网络设备提供第一小区的邻区，该方法包括：生成包括第一小区的邻区的侧行链路配置信息的系统信息，并通过非按需方式向位于第一小区中的终端发送系统信息，系统信息中的邻区的侧行链路配置信息用于终端确定邻区是否满足业务需求。其中，邻区的侧行链路配置信息包括以下信息中的一个或多个：邻区是否提供侧行链路资源配置的信息；邻区是否仅提供锚点载波的信息；邻区是否提供采用第一无线接入技术的侧行链路资源配置的信息；邻区是否提供采用第二无线接入技术的侧行链路资源配置的信息；邻区对于采用第一无线接入技术的侧行链路是否仅提供锚点载波的信息；邻区对于采用第二无线接入技术的侧行链路是否仅提供锚点载波的信息；邻区提供的侧行链路无线承载配置对应的QoS配置文件索引；邻区是否有启用HARQ的侧行链路无线承载配置的信息；邻区是否有采用RLC AM的侧行链路无线承载配置的信息；邻区提供的侧行链路资源池索引；邻区提供的侧行链路资源池最低CBR索引；邻区是否有同步参考源配置的信息；邻区提供的侧行链路资源配置；邻区提供的侧行链路无线承载配置；邻区提供的同步参考源配置；其中，侧行链路为两个终端之间的直连通信链路。第六方面提供的方法，进行SL通信的终端可以获取邻区的SL配置信息，并可以根据邻区的SL配置信息确定邻区是否满足业务需求，该情况下，终端可以重选到满足业务需求的邻区中，从而防止后续进行连接建立或连接恢复，避免增加终端的功耗，还可以提高业务传输性能和连续性。
结合第六方面，在一种可能的实现方式中，邻区通过非按需方式向位于第一小区中的终端发送系统信息，包括：邻区直接向终端发送系统信息。
第七方面，提供了一种通信方法，应用于网络设备，网络设备提供第一小区，该方法包括：生成包括第一小区的邻区的侧行链路配置信息的系统信息，并向位于第一小区中的终端发送系统信息，系统信息中的邻区的侧行链路配置信息用于终端确定邻区是否满足业务需求。其中，邻区的侧行链路配置信息包括以下信息中的一个或多个：邻区是否提供侧行链路资源配置的信息；邻区是否仅提供锚点载波的信息；邻区是否提供采用第一无线接入技术的侧行链路资源配置的信息；邻区是否提供采用第二无线接入技术的侧行链路资源配置的信息；邻区对于采用第一无线接入技术的侧行链路是否仅提供锚点载波的信息；邻区对于采用第二无线接入技术的侧行链路是否仅提供锚点载波的信息；邻区提供的侧行链路无线承载配置对应的QoS配置文件索引；邻区是否有启用HARQ的侧行链路无线承载配置的信息；邻区是否有采用RLC AM的侧行链路无线承载配置的信息；邻区提供的侧行链路资源池索引；邻区提供的侧行链路资源池最低CBR索引；邻区是否有同步参考源配置的信息；邻区提供的侧行链路资源配置；邻区提供的侧行链路无线承载配置；邻区提供的同步参考 源配置；其中，侧行链路为两个终端之间的直连通信链路。第七方面提供的方法，进行SL通信的终端可以获取邻区的SL配置信息，并可以根据邻区的SL配置信息确定邻区是否满足业务需求，该情况下，终端可以重选到满足业务需求的邻区中，从而防止后续进行连接建立或连接恢复，避免增加终端的功耗，还可以提高业务传输性能和连续性。
结合第七方面，在一种可能的实现方式中，第一小区向位于第一小区中的终端发送系统信息，包括：第一小区通过按需方式或非按需方式向终端发送系统信息。
结合第七方面，在一种可能的实现方式中，第一小区通过按需方式向终端发送系统信息，包括：第一小区从终端接收请求消息，请求消息用于请求邻区的侧行链路配置信息；第一小区根据请求消息向终端发送系统信息。
结合第七方面，在一种可能的实现方式中，第一小区通过非按需方式向终端发送系统信息，包括：第一小区直接向终端发送系统信息。
结合第七方面，在一种可能的实现方式中，第一小区通过第一小区所属的网络设备与邻区所属的网络设备之间的接口获取邻区的侧行链路配置信息。
结合第六方面或第七方面，在一种可能的实现方式中，侧行链路资源配置包括载波内侧行链路资源配置和/或载波间侧行链路资源配置。
结合第六方面或第七方面，在一种可能的实现方式中，邻区的载波内侧行链路资源配置是指与邻区采用的频点相同的频点的侧行链路资源配置，或者，与邻区采用的载波相同的载波上的侧行链路资源配置；邻区的载波间侧行链路资源配置是指与邻区采用的频点不同的频点的侧行链路资源配置，或者，邻区采用的频点的邻频上的侧行链路资源配置，或者，与邻区采用的载波不同的载波上的侧行链路资源配置。
结合第六方面或第七方面，在一种可能的实现方式中，通过1个比特指示邻区是否提供侧行链路资源配置，和/或，通过1个比特指示邻区是否仅提供锚点载波。
结合第六方面或第七方面，在一种可能的实现方式中，通过2个比特指示邻区是否提供采用第一无线接入技术和/或第二无线接入技术的侧行链路资源配置。
结合第六方面或第七方面，在一种可能的实现方式中，侧行链路资源配置包括侧行链路发送资源配置，和/或，侧行链路接收资源配置。
结合第六方面或第七方面，在一种可能的实现方式中，邻区不提供侧行链路资源配置表示邻区不通过系统信息提供侧行链路资源配置，也不通过专用信令提供侧行链路资源配置。
结合第六方面或第七方面，在一种可能的实现方式中，邻区不提供侧行链路资源配置表示邻区不通过系统信息提供侧行链路资源配置，但通过专用信令提供侧行链路资源配置。
第八方面，提供了一种通信装置，包括：用于执行第一方面提供的任意一种方法的功能单元，所述功能单元所执行的动作通过硬件实现或通过硬件执行相应的软件实现。例如，通信装置可以包括通信单元和处理单元，通信单元用于接收信号和/或发送信号，处理单元用于进行信息处理。
第九方面，提供了一种通信装置，包括：用于执行第二方面提供的任意一种方法的功能单元，所述功能单元所执行的动作通过硬件实现或通过硬件执行相应的软件实现。例如，通信装置可以包括通信单元和处理单元，通信单元用于接收信号和/或发送信号，处理单元用于进行信息处理。
第十方面，提供了一种通信装置，包括：用于执行第三方面提供的任意一种方法的功能单元，所述功能单元所执行的动作通过硬件实现或通过硬件执行相应的软件实现。例如，通信装置可以包括通信单元和处理单元，通信单元用于接收信号和/或发送信号，处理单元用于进行信息处理。
第十一方面，提供了一种通信装置，包括：用于执行第四方面提供的任意一种方法的功能单元，所述功能单元所执行的动作通过硬件实现或通过硬件执行相应的软件实现。例如，通信装置可以包括通信单元和处理单元，通信单元用于接收信号和/或发送信号，处理单元用于进行信息处理。
第十二方面，提供了一种通信装置，包括：用于执行第五方面提供的任意一种方法的功能单元，所述功能单元所执行的动作通过硬件实现或通过硬件执行相应的软件实现。例如，通信装置可以包括通信单元和处理单元，通信单元用于接收信号和/或发送信号，处理单元用于进行信息处理。
第十三方面，提供了一种通信装置，包括：用于执行第六方面提供的任意一种方法的功能单元，所述功能单元所执行的动作通过硬件实现或通过硬件执行相应的软件实现。例如，通信装置可以包括通信单元和处理单元，通信单元用于接收信号和/或发送信号，处理单元用于进行信息处理。
第十四方面，提供了一种通信装置，包括：用于执行第七方面提供的任意一种方法的功能单元，所述功能单元所执行的动作通过硬件实现或通过硬件执行相应的软件实现。例如，通信装置可以包括通信单元和处理单元，通信单元用于接收信号和/或发送信号，处理单元用于进行信息处理。
第十五方面，提供了一种通信装置，包括：处理器。处理器与存储器连接，存储器用于存储计算机执行指令，处理器执行存储器存储的计算机执行指令，从而实现第一方面至第七方面中的任一方面提供的任意一种方法。其中，存储器和处理器可以集成在一起，也可以为独立的器件。若为后者，存储器可以位于通信装置内，也可以位于通信装置外。
在一种可能的实现方式中，处理器包括逻辑电路，还包括输入接口和输出接口中的至少一个。其中，输出接口用于执行相应方法中的发送的动作，输入接口用于执行相应方法中的接收的动作。
在一种可能的实现方式中，通信装置还包括通信接口和通信总线，处理器、存储器和通信接口通过通信总线连接。通信接口用于执行相应方法中的收发的动作。通信接口也可以称为收发器。可选的，通信接口包括发送器和接收器中的至少一种，该情况下，发送器用于执行相应方法中的发送的动作，接收器用于执行相应方法中的接收的动作。
在一种可能的实现方式中，通信装置以芯片的产品形态存在。
第十六方面，提供了一种通信系统，包括：上述第八方面提供的通信装置和上述第十方面提供的通信装置；或者，上述第九方面提供的通信装置和上述第十一方面提供的通信装置；上述第十二方面提供的通信装置和上述第十三方面或第十四方面提供的通信装置。
第十七方面，提供了一种计算机可读存储介质，包括指令，当该指令在计算机上 运行时，使得计算机执行第一方面至第七方面中的任一方面提供的任意一种方法。
第十八方面，提供了一种包含指令的计算机程序产品，当该指令在计算机上运行时，使得计算机执行第一方面至第七方面中的任一方面提供的任意一种方法。
第八方面至第十八方面中的任一种实现方式所带来的技术效果可参见第一方面至第七方面中的对应实现方式所带来的技术效果，此处不再赘述。
附图说明
图1为本申请实施例提供的一种网络架构示意图；
图2为一种V2X通信示意图；
图3至图6分别为本申请实施例提供的通信方法的流程图；
图7为本申请实施例提供的一种通信装置的组成示意图；
图8和图9分别为本申请实施例提供的一种通信装置的硬件结构示意图。
具体实施方式
在本申请的描述中，除非另有说明，“/”表示“或”的意思，例如，A/B可以表示A或B。本文中的“和/或”仅仅是一种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：单独存在A，同时存在A和B，单独存在B这三种情况。此外，“至少一个”是指一个或多个，“多个”是指两个或两个以上。“第一”、“第二”等字样并不对数量和执行次序进行限定，并且“第一”、“第二”等字样也并不限定一定不同。
需要说明的是，本申请中，“示例性的”或者“例如”等词用于表示作例子、例证或说明。本申请中被描述为“示例性的”或者“例如”的任何实施例或设计方案不应被解释为比其他实施例或设计方案更优选或更具优势。确切而言，使用“示例性的”或者“例如”等词旨在以具体方式呈现相关概念。
本申请涉及到的网元包括通信系统中的网络设备和终端。参见图1，本申请实施例提供的方法主要涉及终端和终端之间的通信，以及终端和网络设备之间的通信。其中，终端与网络设备之间可以通过Uu口通信，终端和终端之间可以通过PC5口通信。终端与终端之间进行直连通信的通信链路可以称之为SL或者边链路。在本申请实施例中，进行SL通信的两个终端可以接入同一个网络设备，例如，终端1和终端2，也可以接入不同的网络设备(例如，终端2和终端3)。在SL上，发送终端可以直接发送数据给接收终端，而不需要先把数据发送给网络设备，再通过核心网的转发，再发给接收终端，可以大大减少数据的传输时延。
本申请实施例中的通信系统包括但不限于长期演进(long term evolution，LTE)系统、第五代(5th-generation，5G)系统、NR系统，无线局域网(wireless local area networks，WLAN)系统以及未来演进系统或者多种通信融合系统。示例性的，本申请实施例提供的方法具体可应用于演进的全球陆地无线接入网络(evolved-universal terrestrial radio access network，E-UTRAN)和下一代无线接入网(next generation-radio access network，NG-RAN)系统。
本申请实施例中的网络设备为网络侧的一种用于发送信号，或者，接收信号，或者，发送信号和接收信号的实体。网络设备可以为部署在无线接入网(radio access network，RAN)中为终端提供无线通信功能的装置，例如可以为传输接收点(transmission reception point，TRP)、基站(例如，演进型基站(evolved NodeB，eNB或eNodeB)、下一代基站 节点(next generation node base station，gNB)、下一代eNB(next generation eNB，ng-eNB)等)、各种形式的控制节点(例如，网络控制器、无线控制器(例如，云无线接入网络(cloud radio access network，CRAN)场景下的无线控制器))、路侧单元(road side unit，RSU)等。具体的，网络设备可以为各种形式的宏基站，微基站(也称为小站)，中继站，接入点(access point，AP)等，也可以为基站的天线面板。所述控制节点可以连接多个基站，并为所述多个基站覆盖下的多个终端配置资源。在采用不同的无线接入技术(radio access technology，RAT)的系统中，具备基站功能的设备的名称可能会有所不同。例如，LTE系统中可以称为eNB或eNodeB，5G系统或NR系统中可以称为gNB，本申请对基站的具体名称不作限定。网络设备还可以是未来演进的公共陆地移动网络(public land mobile network，PLMN)中的网络设备等。
本申请实施例中的终端是用户侧的一种用于接收信号，或者，发送信号，或者，接收信号和发送信号的实体。终端用于向用户提供语音服务和数据连通性服务中的一种或多种。终端还可以称为用户设备(user equipment，UE)、终端设备、接入终端、用户单元、用户站、移动站、远方站、远程终端、移动设备、用户终端、无线通信设备、用户代理或用户装置。终端可以是车联网(vehicle to everything，V2X)设备，例如，智能汽车(smart car或intelligent car)、数字汽车(digital car)、无人汽车(unmanned car或driverless car或pilotless car或automobile)、自动汽车(self-driving car或autonomous car)、纯电动汽车(pure EV或Battery EV)、混合动力汽车(hybrid electric vehicle，HEV)、增程式电动汽车(range extended EV，REEV)、插电式混合动力汽车(plug-in HEV，PHEV)、新能源汽车(new energy vehicle)等。终端也可以是设备到设备(device to device，D2D)设备，例如，电表、水表等。终端还可以是移动站(mobile station，MS)、用户单元(subscriber unit)、无人机、物联网(internet of things，IoT)设备、WLAN中的站点(station，ST)、蜂窝电话(cellular phone)、智能电话(smart phone)、无绳电话、无线数据卡、平板型电脑、会话启动协议(session initiation protocol，SIP)电话、无线本地环路(wireless local loop，WLL)站、个人数字处理(personal digital assistant，PDA)设备、膝上型电脑(laptop computer)、机器类型通信(machine type communication，MTC)终端、具有无线通信功能的手持设备、计算设备或连接到无线调制解调器的其它处理设备、车载设备、可穿戴设备(也可以称为穿戴式智能设备)。终端还可以为下一代通信系统中的终端，例如，5G系统中的终端或者未来演进的PLMN中的终端，NR系统中的终端等。
本申请实施例提供的方法可适用但不限于如下领域：D2D、V2X、无人驾驶(unmanned driving)、自动驾驶(automated driving，ADS)、辅助驾驶(driver assistance，ADAS)、智能驾驶(intelligent driving)、网联驾驶(connected driving)、智能网联驾驶(intelligent network driving)、汽车共享(car sharing)等。
其中，车辆通过车辆与车辆(vehicle to vehicle，V2V)、车辆与路边基础设施(vehicle to infrastructure，V2I)、车辆与行人之间的通信(vehicle to pedestrian，V2P)或者车辆与网络(vehicle to network，V2N)等通信方式来及时获取路况信息或接收信息服务，这些通信方式可以统称为V2X通信。
以最常见的V2V通信和V2I通信为例，图2是V2V通信和V2I通信的示意图。如图2所示，车辆之间通过V2V通信，可以将自身的车速、行驶方向、具体位置、是否踩了紧急刹车等信息广播给周围车辆，周围车辆的驾驶员通过获取该类信息，可以更好的感知视距外的交通状况，从而对危险状况作出提前预判进而作出避让。而对于V2I通信，除了上述安全信息的交互外，路边基础设施，例如，RSU，可以为车辆提供各类服务信息和数据网络的接入，极大的提高交通智能化。当本申请实施例提供的方法应用在V2I场景下时，本申请中的网络设备可以为路边基础设施，例如，RSU，终端可以为车辆。
为了使得本申请更加的清楚，首先对本申请涉及到的部分概念做简单介绍。
1、SL资源
两个终端在进行SL通信时，所采用的SL资源可以有以下两种。
第一种、专用资源
专用资源可以为网络设备通过模式1(mode1)资源配置模式(NR中的名称)或者模式3(mode3)资源配置模式(LTE中的名称)为终端调度的资源。在模式1或模式3中，网络设备可以通过终端的专用无线网络临时标识(radio network temporary identifier,RNTI)为终端半静态或动态分配SL资源。模式1或模式3主要支持连接态的终端。
专用资源包括配置授权(configured grant，CG)资源，例如，类型1(type1)CG(SL configured grant type-1)资源、类型2(type2)CG(SL configured grant type-2)资源、免授权(SL grant free)资源、半静态调度(SL Semi-Persistent Scheduling，SL SPS)资源。专用资源还包括动态授权(dynamic grant，DG)资源。
本申请实施例中的mode1或mode3都是指基于基站调度的资源分配方式，不限于mode1或mode3，也包括未来基于基站调度的资源分配方式。
第二种、竞争资源
竞争资源可以为网络设备通过模式2(mode2)资源配置模式(NR中的名称)或者模式4(mode4)资源配置模式(LTE中的名称)为终端分配的资源。在模式2或模式4中，终端在网络设备通信覆盖范围内时，网络设备可以通过广播的系统信息或专用信令为终端配置SL资源池，该SL资源池是多个终端共享的。终端通过和其他终端竞争获得SL资源池中的合适的SL资源来发送控制信号和/或数据信号。模式2和模式4支持空闲态、非激活态以及连接态的终端。
本申请实施例中的mode2或mode4都是指终端自主资源分配方式，不限于mode2或mode4，也包括未来的终端自主资源分配方式。
本申请主要涉及第二种SL资源。
2、小区选择与小区重选(cell reselection)
小区选择是指终端开机或从盲区进入覆盖区时，选择一个小区进行驻留的过程。当终端开机或从盲区进入覆盖区时，终端选定PLMN并进行小区搜索，确定满足一定条件的小区，并通过小区选择在满足一定条件的小区中选择一个小区进行驻留。
小区重选是指终端在空闲态或非激活态下的小区再选择。当终端驻留在小区中时，随着终端的移动，当前小区和附近小区的信号强度在不断变化，因此，终端需要监测邻区和当前小区的信号质量，并通过小区重选选择一个最好的小区提供服务。
小区重选包括同频(intra-frequency)小区重选和异频(inter-frequency)小区重选(包括跨RAT(inter-RAT)小区重选)两种。其中，异频(inter-frequency)小区重选包括不跨RAT的异频小区重选和跨RAT小区重选。
终端在进行小区重选时，按照一定的规则对各个频点(frequency)进行优先级排序，并按照各个频点的优先级由高至低的顺序依次确定频点上的小区是否符合条件。若最高优先级上多个邻区符合条件,终端选择最高优先级频点上的最优小区。对于同等优先级频点(或同频),采用同频小区重选的R准则重选小区。本申请实施例中，频点也可以替换为载波，载波也可以替换为频点。
在进行小区重选时，终端在候选小区列表中确定满足S准则的小区，在满足S准则的小区中进行小区重选。下文中的候选小区列表可以是指最初的候选小区列表，也可以是指该候选小区集合中满足S准则的小区组成的列表。
3、小区重选优先级
小区重选优先级即上述小区重选时各个频点的优先级。以下通过情况1和情况2，对进行SL通信的终端的现有的小区重选优先级进行描述。下面的描述中，NR Uu是指NR的Uu口，NR SL是指NR的SL，LTE Uu是指LTE的Uu口，LTE SL是指LTE的SL，NR V2X是指NR的V2X，NR V2X SIB是指NR的V2X中的SIB，LTE V2X是指LTE的V2X。
情况1、同一种RAT内调度时的小区重选优先级
以NR为例，在终端驻留的小区的邻区中，若网络设备通过NR Uu为该邻区中的终端进行NR SL配置，网络设备通过NR Uu可为该邻区中的终端提供载波内(intra-carrier)NR SL配置、载波间(inter-carr ier)NR SL配置、以及提供NR SL配置的NR锚点(anchor)载波。
其中，intra-carrier NR SL配置是指与NR Uu频点相同的NR SL频点的NR SL配置。inter-carrier NR SL配置是指与NR Uu频点不同的NR SL频点的NR SL配置。其中，网络设备提供intra-carrier NR SL配置和inter-carrier NR SL配置时，会提供具体的SL资源配置，网络设备提供NR anchor载波时，网络设备不提供SL配置，终端在NR anchor载波去搜NR SL配置。其中，邻区可以通过参数anchorCarrierFreqList指示anchor载波。
在情况1下，在终端驻留的小区的邻区中，能提供intra-carrier NR SL配置和inter-carrier NR SL配置的NR Uu频点为小区重选优先级中的最高优先级的频点，分别提供intra-carrier NR SL配置和inter-carrier NR SL配置的两个Uu频点，不区分相对优先级，另外，不优先仅提供NR anchor载波配置的NR Uu频点。
在NR V2X中，终端需要通过读取邻区的SIB1中的SIB调度信息来获知该邻区是否提供可以携带NR SL配置的SIB。其中，提供NR SL配置的SIB可通过按需或非按需方式提供。按需方式是指网络设备在接收到终端的请求之后才向终端发送SIB。示例性的，该SIB可以为NR V2X SIB，该NR V2X SIB可包含上述intra-carrier NR SL配置、inter-carrier NR SL配置、提供NR SL配置的NR anchor载波配置中的一个或多个。
情况2、跨RAT(即不同RAT)调度时的小区重选优先级
在终端驻留的小区的邻区中，若网络设备通过LTE Uu为终端进行NR SL配置，网络设备通过LTE Uu为该邻区中的终端提供inter-carrier NR SL配置、提供NR SL配置的LTE anchor载波以及提供NR SL配置的NR anchor载波。其中，inter-carrier NR SL配置是指 与LTE Uu频点不同的NR SL频点的NR SL配置。该情况下，在终端驻留的小区的邻区中，能提供inter-carrier NR SL配置的LTE Uu频点为小区重选优先级中的最高优先级的频点。
在终端驻留的小区的邻区中，若网络设备通过NR Uu为终端进行LTE SL配置，网络设备通过NR Uu为该邻区中的终端提供inter-carrier LTE SL配置、提供LTE SL配置的LTE anchor载波以及提供LTE SL配置的NR anchor载波。其中，inter-carrier LTE SL配置是指与NR Uu频点不同的LTE SL频点的LTE SL配置。该情况下，在终端驻留的小区的邻区中，能提供inter-carrier LTE SL配置的NR Uu频点为小区重选优先级中的最高优先级的频点。
在网络设备通过LTE Uu为终端进行LTE SL配置的情况下，携带LTE SL配置的SIB为现有的SIB。在网络设备通过NR Uu为终端进行NR SL配置的情况下，携带NR SL配置的SIB也为现有的SIB。在网络设备通过LTE Uu为终端进行NR SL配置的情况下，携带NR SL配置的SIB为单独的新SIB(例如，SIB28)。在网络设备通过NR Uu为终端进行LTE SL配置的情况下，携带LTE SL配置的SIB也为单独的新SIB(例如，SIB29)。该情况下，对于要进行小区重选的终端而言，终端需要通过读取邻区的SIB1中的SIB调度信息来获知该邻区是否提供NR SL配置和/或LTE SL配置的SIB。例如，若SIB1中的SIB调度信息中包括现有的SIB和新SIB的调度信息，表示该邻区可以提供NR SL配置和LTE SL配置的SIB。
需要说明的是，若网络设备通过LTE Uu为终端进行NR SL配置，网络设备可以仅通过LTE Uu为终端进行NR SL配置，也可以通过LTE Uu为终端进行NR SL配置和LTE SL配置。若网络设备通过NR Uu为终端进行LTE SL配置，网络设备可以仅通过NR Uu为终端进行LTE SL配置，也可以通过NR Uu为终端进行LTE SL配置和NR SL配置。该情况下，若终端的上层配置了进行针对LTE V2X业务和NR V2X业务的SL通信，则同时提供LTE SL配置和NR SL配置的频点可能比仅提供LTE SL配置或NR SL配置的频点的优先级高。
基于上述描述，以下对现有技术中存在的问题进行总结。
问题1
对于要进行小区重选的终端而言，终端可以通过读取邻区的SIB1中的SIB调度信息来获知该邻区是否提供携带NR SL配置和/或LTE SL配置的SIB，但是若该SIB是通过按需方式提供的，就要求该终端驻留到该邻区后才能获取该SIB，进而获取SL配置信息，使得进行SL通信的终端无法在服务小区确定邻区采用的频点的优先级。
问题2
对于要进行小区重选的终端而言，终端可以通过读取邻区的SIB1中的SIB调度信息来获知该邻区是否提供携带NR SL配置和/或LTE SL配置的SIB，若该SIB是通过非按需方式提供的，虽然终端可以直接获取该SIB，但是终端读取多个邻区的该SIB会增加终端的功耗。
问题3
若一个终端重选到一个小区，但该小区不提供SL资源配置或不满足当前V2X业务的服务质量(quality of service，QoS)需求的侧行链路无线承载(sidelink radio bearer，SLRB)配置，那么终端需要发起连接建立(针对空闲态终端)或连接恢复(针对非激活态终端)以从网络设备获取合适的SL资源或SL配置。一方面，这会增加手持(pedestrian to everything，P2X)终端的功耗。另一方面，终端在获取到合适的SL资源或SL配置之前采用特殊(exeptional)资源池进行业务传输，但exeptional资源池的性能不可靠，特别是当使用的终端个数比较多的情况下相对于竞争资源的性能差别比较大，会影响有业务传输 的V2X终端的业务传输性能和连续性，对紧急(critical)业务影响更大。
为了解决上述问题，本申请提供了以下实施例所示的通信方法。
实施例一
在实施例一中，终端驻留的小区(在本申请各个实施例中终端驻留的小区记为第一小区)的邻区(在本申请各个实施例中将第一小区的邻区简单描述为邻区)通过非按需方式向终端发送系统信息。
具体的，参见图3，实施例一提供的通信方法包括：
301、生成系统信息，系统信息包括邻区的SL配置信息，SL为两个终端之间的直连通信链路。
其中，在本申请各个实施例中，第一小区和邻区均由网络设备提供。提供一个或多个邻区的网络设备和提供第一小区的网络设备可以为同一个网络设备，也可以为不同的网络设备。下文中不再赘述。
步骤301中，系统信息可以为邻区所属的网络设备(或者说提供该邻区的网络设备)生成的，也可以是邻区生成的，图3中以邻区生成为例进行绘制。
其中，在本申请各个实施例中，SL配置可以包括SL资源配置、同步配置、资源选择配置、区域(zone)配置、信道拥塞率(channel busy ratio，CBR)相关配置等信息中的一个或多个。其中，SL资源配置可以用于指示SL资源，例如，SL时域资源、SL频域资源、SL码域资源和SL空域资源中的一个或多个。下文中不再赘述。
在本申请各个实施例中，SL资源配置可以是SL通信的资源配置，或SL通信配置中的资源配置。
302、邻区通过非按需方式向终端发送系统信息。相应的，终端通过非按需方式从邻区接收系统信息。
其中，若邻区有多个，多个邻区中的每个邻区都可以执行步骤301和步骤302，则终端可以接收到多个邻区发送的系统信息。
针对小区，本申请各个实施例中的非按需方式均指不依赖于终端的请求向终端发送信息的方式。针对终端，本申请各个实施例中的非按需方式均指不需要发送请求就可以获取信息的方式。该情况下，步骤302在具体实现时可以包括：邻区直接向终端发送系统信息，相应的，终端直接从邻区接收系统信息。本申请各个实施例中，终端直接接收信息是指终端在接收信息之前不发送请求。一个小区直接发送信息是指该小区不根据终端的请求发送信息。
示例性的，非按需方式可以为广播方式，该情况下，步骤302在具体实现时可以包括：邻区广播系统信息，相应的，终端从邻区接收该邻区广播的系统信息。
其中，系统信息可以是不可以通过按需方式发送的系统信息块(例如，主信息块(master information block，MIB)、MIB-SL-V2X、SIB1等)。针对小区，本申请各个实施例中的按需方式均指依赖于终端的请求向终端发送信息的方式。针对终端，本申请各个实施例中的按需方式均指需要发送请求才可以获取到信息的方式。
在本申请实施例中，可以将用于指示部分或全部信息(该部分或全部信息为用于携带SL配置信息的系统信息(例如，SIB28和/或SIB29)中的部分或全部信息)的信息放到本申请中的系统信息(例如，MIB、MIB-SL-V2X或SIB1)中发送给终端，从而使得终端可以 获取通过非按需方式获取不到的一些信息。其中，用于指示部分或全部信息的信息可以为直接指示该部分或全部信息的信息，也可以为间接指示该部分或全部信息的信息，本申请不作限制。
303、终端根据邻区的SL配置信息确定邻区采用的频点的优先级。
可选的，在步骤303之后，该方法还包括：
304、终端根据邻区采用的频点的优先级进行小区重选。
步骤304的具体实现可参见现有技术，此处不再赘述。
实施例一提供的方法，邻区可以通过非按需方式向终端发送包含邻区的SL配置信息的系统信息，该情况下，进行SL通信的终端可以直接在第一小区中获取邻区的SL配置信息，而不需要驻留到邻区，可以方便终端根据邻区的SL配置信息进行小区重选(即可以解决上述问题1)。另外，终端也不需要读取携带NR SL配置和/或LTE SL配置的SIB，可以避免增加终端的功耗(即可以解决上述问题2)。
另外，终端可以根据邻区的SL配置信息确定邻区采用的频点的优先级，以便进行小区重选。例如，终端可以将满足SL通信需求的邻区采用的频点的优先级设置的较高，从而保证终端重选到的小区是满足终端的SL通信需求的。
可选的，邻区的SL配置信息包括以下信息中的一个或多个：
信息1、邻区是否提供SL资源配置的信息；
信息2、邻区是否仅提供锚点载波的信息；
信息3、邻区是否提供采用第一RAT的SL资源配置的信息；
信息4、邻区是否提供采用第二RAT的SL资源配置的信息；
信息5、邻区对于采用第一RAT的SL是否仅提供锚点载波的信息；
信息6、邻区对于采用第二RAT的SL是否仅提供锚点载波的信息。
示例性的，第一RAT可以为LTE，第二RAT可以为NR。
可选的，SL资源配置包括SL发送资源配置，和/或，SL接收资源配置。
可选的，SL资源配置包括intra-carrier SL资源配置(即携带在intra-carrier SL配置中的SL资源配置)和/或inter-carrier SL资源配置(即携带在inter-carrier SL配置中的SL资源配置)。示例性的，邻区的intra-carrier SL资源配置是指与邻区采用的频点相同的频点的SL资源配置，或者，与邻区采用的载波相同的载波上的SL资源配置；邻区的inter-carrier SL资源配置是指与邻区采用的频点不同的频点的SL资源配置，或者，邻区采用的频点的邻频上的SL资源配置，或者，与邻区采用的载波不同的载波上的SL资源配置。其中,邻区采用的频点或载波可以为邻区在Uu口采用的频点或载波。
以下首先对上述信息1至信息6分别进行介绍。
信息1
在信息1中，邻区提供SL资源配置表示以下含义中的一个：
含义1、邻区提供intra-carrier SL资源配置；
含义2、邻区提供inter-carrier SL资源配置；
含义3、邻区提供intra-carrier SL资源配置和inter-carrier SL资源配置。
邻区不提供SL资源配置表示邻区不提供intra-carrier SL资源配置和inter-carrier SL资源配置。
另外，可选的，邻区不提供SL资源配置仅表示邻区不通过系统信息提供SL资源配置，但是否通过其他信息提供SL资源配置不作限制。示例性的，邻区不提供SL资源配置表示邻区不通过系统信息提供SL资源配置，也不通过专用信令提供SL资源配置；或者，邻区不提供SL资源配置表示邻区不通过系统信息提供SL资源配置，但通过专用信令提供SL资源配置。
其中，通过系统信息提供的SL资源配置为资源池配置(例如，mode2或mode4资源池配置)。通过专用信令提供的SL资源配置可以为资源池配置，也可以为非资源池配置(例如，mode1或mode3资源配置)。
需要说明的是，邻区不提供SL资源配置时，可能提供锚点载波，也可能不提供锚点载波。
信息1中，可选的，通过1个比特指示邻区是否提供SL资源配置。例如，该比特取值为0时，表示邻区不提供SL资源配置，该比特取值为1时，表示邻区提供SL资源配置。反之亦可。
信息1中，在一种情况下，进一步的，可以通过多个比特(例如，2个比特)指示邻区是否提供intra-carrier SL资源配置和/或inter-carrier SL资源配置。例如，通过2个比特中的1个比特指示邻区是否提供intra-carrier SL资源配置，通过2个比特中的另1个比特指示邻区是否提供inter-carrier SL资源配置。再例如，通过2个比特的不同的取值进行区分，00表示仅提供intra-carrier SL资源配置，01表示仅提供inter-carrier SL资源配置，10表示同时提供intra-carrier SL资源配置和inter-carrier SL资源配置。
信息1中，在另一种情况下，进一步的，可以通过多个比特(例如，3个比特)指示邻区是否提供intra-carrier SL资源配置、inter-carrier SL资源配置以及锚点载波。例如，通过3个比特中的第1个比特指示邻区是否提供intra-carrier SL资源配置，通过3个比特中的第2个比特指示邻区是否提供inter-carrier SL资源配置，通过3个比特中的第3个比特指示邻区是否提供锚点载波。再例如，通过3个比特的不同的取值进行区分，000表示仅提供intra-carrier SL资源配置，001表示仅提供inter-carrier SL资源配置，010表示仅提供锚点载波，011表示同时提供intra-carrier SL资源配置和inter-carrier SL资源配置，100表示同时提供intra-carrier SL资源配置和锚点载波，101表示同时提供inter-carrier SL资源配置和锚点载波，111表示同时提供intra-carrier SL资源配置、inter-carrier SL资源配置和锚点载波。
信息2
在信息2中，邻区仅提供锚点载波表示邻区仅提供锚点载波不提供SL配置(自然也就不提供SL资源配置)。邻区不仅提供锚点载波表示邻区提供锚点载波之外还可能提供SL资源配置或其他信息。
在信息2中，可选的，通过1个比特指示邻区是否仅提供锚点载波。例如，该比特取值为0时，表示邻区仅提供锚点载波，该比特取值为1时，表示邻区不仅提供锚点载波。反之亦可。
信息3
在信息3中，可选的，通过1个比特指示邻区是否提供采用第一RAT的SL资源配置。例如，该比特取值为0时，表示邻区提供采用第一RAT的SL资源配置，该比特取值为1时，表示邻区不提供采用第一RAT的SL资源配置。反之亦可。
信息3中，在一种情况下，进一步的，可以通过多个比特(例如，2个比特)指示邻区是否提供采用第一RAT的intra-carrier SL资源配置和/或采用第一RAT的inter-carrier SL资源配置。例如，通过2个比特中的1个比特指示邻区是否提供采用第一RAT的intra-carrier SL资源配置，通过2个比特中的另1个比特指示邻区是否提供采用第一RAT的inter-carrier SL资源配置。再例如，通过2个比特的不同的取值进行区分，00表示仅提供采用第一RAT的intra-carrier SL资源配置，01表示仅提供采用第一RAT的inter-carrier SL资源配置，10表示同时提供采用第一RAT的intra-carrier SL资源配置和采用第一RAT的inter-carrier SL资源配置。
信息3中，在另一种情况下，进一步的，可以通过多个比特(例如，3个比特)指示邻区是否提供采用第一RAT的intra-carrier SL资源配置、采用第一RAT的inter-carrier SL资源配置以及采用第一RAT的锚点载波。例如，通过3个比特中的第1个比特指示邻区是否提供采用第一RAT的intra-carrier SL资源配置，通过3个比特中的第2个比特指示邻区是否提供采用第一RAT的inter-carrier SL资源配置，通过3个比特中的第3个比特指示邻区是否提供采用第一RAT的锚点载波。再例如，通过3个比特的不同的取值进行区分，000表示仅提供采用第一RAT的intra-carrier SL资源配置，001表示仅提供采用第一RAT的inter-carrier SL资源配置，010表示仅提供采用第一RAT的锚点载波，011表示同时提供采用第一RAT的intra-carrier SL资源配置和采用第一RAT的inter-carrier SL资源配置，100表示同时提供采用第一RAT的intra-carrier SL资源配置和采用第一RAT的锚点载波，101表示同时提供采用第一RAT的inter-carrier SL资源配置和采用第一RAT的锚点载波，111表示同时提供采用第一RAT的intra-carrier SL资源配置、采用第一RAT的inter-carrier SL资源配置和采用第一RAT的锚点载波。
信息4
在信息4中，可选的，通过1个比特指示邻区是否提供采用第二RAT的SL资源配置。例如，该比特取值为0时，表示邻区提供采用第二RAT的SL资源配置，该比特取值为1时，表示邻区不提供采用第二RAT的SL资源配置。反之亦可。
信息4中，在一种情况下，进一步的，可以通过多个比特(例如，2个比特)指示邻区是否提供采用第二RAT的intra-carrier SL资源配置和/或采用第二RAT的inter-carrier SL资源配置。例如，通过2个比特中的1个比特指示邻区是否提供采用第二RAT的intra-carrier SL资源配置，通过2个比特中的另1个比特指示邻区是否提供采用第二RAT的inter-carrier SL资源配置。再例如，通过2个比特的不同的取值进行区分，00表示仅提供采用第二RAT的intra-carrier SL资源配置，01表示仅提供采用第二RAT的inter-carrier SL资源配置，10表示同时提供采用第二RAT的intra-carrier SL资源配置和采用第二RAT的inter-carrier SL资源配置。
信息4中，在另一种情况下，进一步的，可以通过多个比特(例如，3个比特)指示邻区是否提供采用第二RAT的intra-carrier SL资源配置、采用第二RAT的inter-carrier SL资源配置以及采用第二RAT的锚点载波。例如，通过3个比特中的第1个比特指示邻区是否提供采用第二RAT的intra-carrier SL资源配置，通过3个比特中的第2个比特指示邻区是否提供采用第二RAT的inter-carrier SL资源配置，通过3个比特中的第3个比特指示邻区是否提供采用第二RAT的锚点载波。再例如，通过3个比特的不同的取值进行区分，000表 示仅提供采用第二RAT的intra-carrier SL资源配置，001表示仅提供采用第二RAT的inter-carrier SL资源配置，010表示仅提供采用第二RAT的锚点载波，011表示同时提供采用第二RAT的intra-carrier SL资源配置和采用第二RAT的inter-carrier SL资源配置，100表示同时提供采用第二RAT的intra-carrier SL资源配置和采用第二RAT的锚点载波，101表示同时提供采用第二RAT的inter-carrier SL资源配置和采用第二RAT的锚点载波，111表示同时提供采用第二RAT的intra-carrier SL资源配置、采用第二RAT的inter-carrier SL资源配置和采用第二RAT的锚点载波。
信息5
在信息5中，邻区对于采用第一RAT的SL仅提供锚点载波表示邻区仅提供采用第一RAT的锚点载波，不提供第一RAT的SL资源配置。邻区对于采用第一RAT的SL不仅提供锚点载波表示邻区提供采用第一RAT的锚点载波之外还可能提供第一RAT的SL资源配置。
在信息5中，可选的，通过1个比特指示邻区对于采用第一RAT的SL是否仅提供锚点载波。例如，该比特取值为0时，表示邻区对于采用第一RAT的SL仅提供锚点载波，该比特取值为1时，表示邻区对于采用第一RAT的SL不仅提供锚点载波。反之亦可。
信息6
在信息6中，邻区对于采用第二RAT的SL仅提供锚点载波表示邻区仅提供采用第二RAT的锚点载波，不提供第二RAT的SL资源配置。邻区对于采用第二RAT的SL不仅提供锚点载波表示邻区提供采用第二RAT的锚点载波之外还可能提供第二RAT的SL资源配置。
在信息6中，可选的，通过1个比特指示邻区对于采用第二RAT的SL是否仅提供锚点载波。例如，该比特取值为0时，表示邻区对于采用第二RAT的SL仅提供锚点载波，该比特取值为1时，表示邻区对于采用第二RAT的SL不仅提供锚点载波。反之亦可。
针对信息3和信息4，除了通过1个比特指示邻区是否提供采用第一RAT的SL资源配置，采用另1个比特指示邻区是否提供采用第二RAT的SL资源配置之外，还可以通过多个比特的不同的取值指示邻区是否提供采用第一RAT和/或第二RAT的SL资源配置。示例性的，00表示仅提供采用第一RAT的SL资源配置，01表示仅提供采用第二RAT的SL资源配置，10表示同时提供采用第一RAT和第二RAT的SL资源配置。信息5和信息6是类似的，不再赘述。
在上述实施例中，当邻区仅支持一个RAT时，一种情况下，该邻区的SL配置信息可以仅包括信息1或信息3(此时，该邻区支持的RAT为第一RAT)或信息4(此时，该邻区支持的RAT为第二RAT)即可，终端根据信息1或信息3或信息4即可判断邻区是否提供SL资源配置。另一种情况下，该邻区的SL配置信息可以包含信息1至信息4中的多个，终端根据该多个中的一个或多个判断邻区是否提供SL资源配置。
当邻区既支持第一RAT也支持第二RAT时，一种情况下，该邻区的SL配置信息可以仅包括信息3和信息4，也可以既包括信息3和信息4，还包括信息1和/或信息2。
另外，当邻区支持两个以上(例如，3个或5个)RAT时，该邻区的SL配置信息还包括该邻区是否提供采用除第一RAT和第二RAT之外的其他RAT(例如，未来演进的RAT)的SL资源配置的信息。此时，针对每个RAT，可以通过1个比特指示邻区是否提供采用该RAT的SL资源配置的信息，也可以通过多个比特(例如，3个或5个比特)的不同的取值指示邻区是否提供采用多种RAT中的一种或多种RAT的SL资源配置。
邻区的SL配置信息包含的信息不同时，步骤303的实现也有所不同，以下通过情况1至 情况4分别进行说明。
情况1、邻区的SL配置信息至少包括信息1。
在情况1下，步骤303在具体实现时，包括：在终端根据邻区的SL配置信息确定邻区提供SL资源配置的情况下，终端将邻区采用的频点确定为优先级最高的频点。
具体的，终端根据信息1确定邻区是否提供SL资源配置。
在情况1下，可选的，终端满足以下条件中的一个或多个：终端具备侧行链路通信能力，终端被配置进行侧行链路通信，终端被授权进行侧行链路通信。
情况2、邻区的SL配置信息至少包括信息2。
在情况2下，步骤303在具体实现时，包括：在终端根据邻区的SL配置信息确定邻区不提供SL资源配置的情况下，终端不将邻区采用的频点确定为优先级最高的频点。
具体的，终端根据信息2确定邻区不提供SL资源配置。
在情况2下，可选的，终端具备SL通信能力、且终端被配置进行SL通信。
情况3、邻区的SL配置信息至少包括信息3和信息4。
在情况3下，步骤303在具体实现时，包括：
在终端被配置为既采用第一RAT进行SL通信，还采用第二RAT进行SL通信的情况下，终端将既提供采用第一RAT的SL资源配置，还提供采用第二RAT的SL资源配置的邻区采用的频点确定为优先级最高的频点；或者，
在终端被配置仅采用第一RAT进行SL通信的情况下，终端将提供采用第一RAT的SL资源配置的邻区(此时，该邻区可以提供采用第二RAT的SL资源配置，也可以不提供采用第二RAT的SL资源配置)采用的频点确定为优先级最高的频点；或者，
在终端被配置仅采用第二RAT进行SL通信的情况下，终端将采用第二RAT的SL资源配置的邻区(此时，该邻区可以提供采用第一RAT的SL资源配置，也可以不提供采用第一RAT的SL资源配置)采用的频点确定为优先级最高的频点。
情况4、邻区的SL配置信息至少包括信息5和信息6。
在情况4下，步骤303在具体实现时，包括：
在终端被配置为既采用第一RAT进行SL通信，还采用第二RAT进行SL通信的情况下，终端将对于采用第一RAT的SL仅提供锚点载波和/或对于采用第二RAT的SL仅提供锚点载波的邻区采用的频点不确定为优先级最高的频点；或者，
在终端被配置仅采用第一RAT进行SL通信的情况下，终端将对于采用第一RAT的SL仅提供锚点载波的邻区采用的频点不确定为优先级最高的频点；或者，
在终端被配置仅采用第二RAT进行SL通信的情况下，终端将对于采用第一RAT的SL仅提供锚点载波的邻区采用的频点不确定为优先级最高的频点。
在情况3和情况4中，在终端被配置为既采用第一RAT进行SL通信，还采用第二RAT进行SL通信的情况下，终端满足以下条件中的一个或多个：终端具备既采用第一RAT进行SL通信，还采用第二RAT进行SL通信的能力；终端被授权进行采用第一RAT和第二RAT的SL通信。
在情况3和情况4中，在终端被配置仅采用第一RAT进行SL通信的情况下，终端满足以下条件中的一个或多个：终端具备采用第一RAT进行SL通信的能力，终端被授权进行采用第一RAT的SL通信。
在情况3和情况4中，在终端被配置仅采用第二RAT进行SL通信的情况下，终端满足以 下条件中的一个或多个：终端具备采用第二RAT进行SL通信的能力，终端被授权进行采用第二RAT的SL通信。
可选的，在第一种情况下，邻区的SL配置信息包括以下信息中的一个或多个：
信息7、邻区提供的SLRB配置对应的QoS配置文件(Profile)索引；
信息8、邻区是否有启用(enable)混合自动重传请求(hybrid automatic repeat request，HARQ)的SLRB配置的信息；
信息9、邻区是否有采用无线链路控制(radio link control，RLC)确认模式(acknowledged mode，AM)的SLRB配置的信息；
信息10、邻区提供的SL资源池索引；
信息11、邻区提供的SL资源池最低CBR索引；
信息12、邻区是否有同步参考源配置的信息；
信息13、邻区提供的SL资源配置；
信息14、邻区提供的SLRB配置；
信息15、邻区提供的同步参考源配置。
其中，针对信息7，终端可以根据信息7确定邻区提供的SLRB配置是否满足SL业务(例如，V2X业务)的Qos需求。
针对信息8，终端可以根据信息8确定邻区是否提供SL的HARQ功能。
针对信息9，终端可以根据信息9确定邻区在SL的RLC层是否采用AM模式。
针对信息10，终端可以根据信息10确定邻区提供的资源池的索引，资源池的索引大小与资源池的大小对应，因此，终端可以根据信息10间接的确定邻区提供的资源池的大小。
针对信息11，终端可以根据信息11确定邻区的至少一个SL资源池中的最低CBR的资源池。
针对信息12，终端可以根据信息12确定邻区是否有同步参考源。
针对信息13，终端可以根据信息13确定邻区的SL资源配置。
针对信息14，终端可以根据信息14确定邻区提供的SLRB配置。
针对信息15，终端可以根据信息15确定邻区提供的同步参考源。
基于第一种情况，一种可能的实现方式，邻区的SL配置信息包括信息1至信息15中的一个或多个，该情况下，步骤303在具体实现时可以包括：当终端被配置了在SL上传输业务时，终端根据邻区的SL配置信息将邻区中的满足业务需求的邻区采用的频点确定为优先级最高的频点。
基于第一种情况，另一种可能的实现方式，步骤303在具体实现时，终端根据邻区的SL配置信息中的信息1至信息6中的一个或多个确定优先级最高的频点，若优先级最高的频点有多个，再根据信息7至信息15中的一个或多个确定优先级最高的频点的相对优先级，具体的，当终端被配置了在SL上传输业务时，终端根据邻区的SL配置信息中的信息7至信息15中的一个或多个，确定邻区中的满足业务需求的邻区在优先级最高的频点集合中的相对优先级更高。该种可能的实现方式可以更精准的确定邻区采用的频点的优先级。
基于第一种情况，当业务需求包括M1(M1为大于0的整数)项需求时，邻区满足业务需求可以是指：邻区的SL配置信息满足M1项需求中的N1(N1为大于0小于等于M1的整数) 项需求。N1的值可以为预设的或预定义的或协议规定的或根据M1的值确定的。例如，当邻区的SL配置信息满足M1项需求中的全部需求时，该邻区满足业务需求。再例如，当邻区的SL配置信息满足M1项需求中的任意一项需求时，该邻区满足业务需求，示例性的，若终端的业务的QoS要求对应的SLRB配置采用RLC AM，则当终端根据某个邻区的SL配置信息判断该邻区能提供采用RLC AM的SLRB配置，则认为该邻区能够满足终端的业务需求。
可选的，在第二种情况下，系统信息中可以包括邻区的辅助信息，邻区的辅助信息包括上述信息7至信息15中的一个或多个。
基于第二种情况，步骤303在具体实现时，终端根据邻区的SL配置信息中的信息1至信息6中的一个或多个确定优先级最高的频点，再根据信息7至信息15中的一个或多个确定优先级最高的频点对应的邻区中的不满足业务需求的邻区，并将不满足业务需求的邻区采用的频点从优先级最高的频点中移除，或者将不满足业务需求的邻区从候选小区列表(candidate list，即满足S准则的小区组成的列表)中移除。
基于第二种情况，当业务需求包括M2(M2为大于0的整数)项需求时，邻区不满足业务需求可以是指：邻区的SL配置信息不满足M2项需求中的N2(N2为大于0小于等于M2的整数)项需求。N2的值可以为预设的或预定义的或协议规定的或根据M2的值确定的。例如，当邻区的SL配置信息不满足M2项需求中的全部需求时，该邻区不满足业务需求。再例如，当邻区的SL配置信息不满足M2项需求中的任意一项需求时，该邻区不满足业务需求，示例性的，若终端的业务的QoS要求对应的SLRB配置采用RLC AM，当终端根据某个邻区的SL配置信息判断该邻区不能提供采用RLC AM的SLRB配置，则认为该邻区不满足终端的业务需求。
实施例二
实施例二与实施例一的区别主要在于，实施例一中终端通过邻区获取邻区的SL配置信息，而实施例二中终端通过第一小区获取邻区的SL配置信息。
具体的，参见图4，实施例二提供的通信方法包括：
401、生成系统信息，系统信息包括邻区的SL配置信息，SL为两个终端之间的直连通信链路。
步骤401中，系统信息可以为第一小区所属的网络设备(或者说提供第一小区的网络设备)生成的，也可以是第一小区生成的，图4中以第一小区生成为例进行绘制。
其中，邻区的SL配置信息包括以下信息中的一个或多个：
信息1、邻区是否提供SL资源配置的信息；
信息2、邻区是否仅提供锚点载波的信息；
信息3、邻区是否提供采用第一RAT的SL资源配置的信息；
信息4、邻区是否提供采用第二RAT的SL资源配置的信息；
信息5、邻区对于采用第一RAT的SL是否仅提供锚点载波的信息；
信息6、邻区对于采用第二RAT的SL是否仅提供锚点载波的信息。
关于邻区的SL配置信息的相关描述可参见实施例一，在此不再赘述。
可选的，第一小区通过第一小区所属的网络设备与邻区所属的网络设备之间的接口获取邻区的SL配置信息。
其中，第一小区所属的网络设备通过与邻区所属的网络设备之间的接口(当两个网络设备均为eNB时，该接口可以为X2接口，当两个网络设备均为gNB，或一个网络设备为gNB， 另一个网络设备为ng-eNB时，该接口可以为Xn接口)获取一个或多个邻区的SL配置信息。其中，若邻区的SL配置信息有更新时，该邻区所属的网络设备也通过该接口向第一小区所属的网络设备发送更新后的SL配置信息。
402、第一小区向位于第一小区中的终端发送系统信息，相应的，终端从第一小区接收系统信息。
若邻区有多个，则第一小区可以向终端发送包含多个邻区的SL配置信息的系统信息。
403、终端根据邻区的SL配置信息确定邻区采用的频点的优先级。
其中，邻区的SL配置信息包含的信息不同时，步骤403的实现也有所不同，具体可参见实施例一中的情况1至情况4。
可选的，在步骤403之后，该方法还包括：
404、终端根据邻区采用的频点的优先级进行小区重选。
实施例二提供的方法，第一小区可以向终端发送包含邻区的SL配置信息的系统信息，该情况下，进行SL通信的终端可以直接获取邻区的SL配置信息，而不需要驻留到邻区，可以方便终端根据邻区的SL配置信息进行小区重选(即可以解决上述问题1)。另外，终端也不需要读取携带NR SL配置和/或LTE SL配置的SIB，可以避免增加终端的功耗(即可以解决上述问题2)。
另外，终端可以根据邻区的SL配置信息确定邻区采用的频点的优先级，以便进行小区重选。例如，终端可以将满足SL通信需求的邻区采用的频点的优先级设置的较高，从而保证终端重选到的小区是满足终端的SL通信需求的。
可选的，步骤402在具体实现时，包括：第一小区通过按需方式或非按需方式向终端发送系统信息。相应的，终端通过按需方式或非按需方式从第一小区接收系统信息。
若第一小区和终端通过按需方式发送和接收系统信息时，步骤402具体可以包括：终端向第一小区发送请求消息，请求消息用于请求邻区的SL配置信息；第一小区从终端接收请求消息，根据请求消息向终端发送系统信息，终端从第一小区接收系统信息。其中，系统信息可以是通过按需方式发送的系统信息块(例如，intra-frequency小区重选SIB(例如，SIB3)、inter-frequency小区重选SIB(例如，SIB4)或V2X-SIB等)。
若第一小区和终端通过非按需方式发送和接收系统信息时，步骤402具体可以包括：第一小区直接向终端发送系统信息，终端直接从第一小区接收系统信息。其中，系统信息可以是不可以通过按需方式发送的系统信息块(例如，MIB、MIB-SL-V2X、SIB1等)。
可选的，在第一种情况下，邻区的SL配置信息包括以下信息中的一个或多个：
信息7、邻区提供的SLRB配置对应的QoS配置文件(Profile)索引；
信息8、邻区是否有启用(enable)混合自动重传请求(hybrid automatic repeat request，HARQ)的SLRB配置的信息；
信息9、邻区是否有采用无线链路控制(radio link control，RLC)确认模式(acknowledged mode，AM)的SLRB配置的信息；
信息10、邻区提供的SL资源池索引；
信息11、邻区提供的SL资源池最低CBR索引；
信息12、邻区是否有同步参考源配置的信息；
信息13、邻区提供的SL资源配置；
信息14、邻区提供的SLRB配置；
信息15、邻区提供的同步参考源配置。
其中，针对信息7，终端可以根据信息7确定邻区提供的SLRB配置是否满足SL业务(例如，V2X业务)的Qos需求。
针对信息8，终端可以根据信息8确定邻区是否提供SL的HARQ功能。
针对信息9，终端可以根据信息9确定邻区在SL的RLC层是否采用AM模式。
针对信息10，终端可以根据信息10确定邻区提供的资源池的索引，资源池的索引大小与资源池的大小对应，因此，终端可以根据信息10间接的确定邻区提供的资源池的大小。
针对信息11，终端可以根据信息11确定邻区的至少一个SL资源池中的最低CBR的资源池。
针对信息12，终端可以根据信息12确定邻区是否有同步参考源。
针对信息13，终端可以根据信息13确定邻区的SL资源配置。
针对信息14，终端可以根据信息14确定邻区提供的SLRB配置。
针对信息15，终端可以根据信息15确定邻区提供的同步参考源。
基于第一种情况，一种可能的实现方式，邻区的SL配置信息包括信息1至信息15中的一个或多个，该情况下，步骤303在具体实现时可以包括：当终端被配置了在SL上传输业务时，终端根据邻区的SL配置信息将邻区中的满足业务需求的邻区采用的频点确定为优先级最高的频点。
基于第一种情况，另一种可能的实现方式，步骤303在具体实现时，终端根据邻区的SL配置信息中的信息1至信息6中的一个或多个确定优先级最高的频点，若优先级最高的频点有多个，再根据信息7至信息15中的一个或多个确定优先级最高的频点的相对优先级，具体的，当终端被配置了在SL上传输业务时，终端根据邻区的SL配置信息中的信息7至信息15中的一个或多个，确定邻区中的满足业务需求的邻区在优先级最高的频点集合中的相对优先级更高。该种可能的实现方式可以更精准的确定邻区采用的频点的优先级。
基于第一种情况，当业务需求包括M1(M1为大于0的整数)项需求时，邻区满足业务需求可以是指：邻区的SL配置信息满足M1项需求中的N1(N1为大于0小于等于M1的整数)项需求。N1的值可以为预设的或预定义的或协议规定的或根据M1的值确定的。例如，当邻区的SL配置信息满足M1项需求中的全部需求时，该邻区满足业务需求。再例如，当邻区的SL配置信息满足M1项需求中的任意一项需求时，该邻区满足业务需求，示例性的，若终端的业务的QoS要求对应的SLRB配置采用RLC AM，则当终端根据某个邻区的SL配置信息判断该邻区能提供采用RLC AM的SLRB配置，则认为该邻区能够满足终端的业务需求。
可选的，在第二种情况下，系统信息中可以包括邻区的辅助信息，邻区的辅助信息包括上述信息7至信息15中的一个或多个。
基于第二种情况，步骤303在具体实现时，终端根据邻区的SL配置信息中的信息1至信息6中的一个或多个确定优先级最高的频点，再根据信息7至信息15中的一个或多个确定优先级最高的频点对应的邻区中的不满足业务需求的邻区，并将不满足业务需求的邻区采用的频点从优先级最高的频点中移除，或者将不满足业务需求的邻区从候选小区列表(candidate list，即满足S准则的小区组成的列表)中移除。
基于第二种情况，当业务需求包括M2(M2为大于0的整数)项需求时，邻区不满足业务需求可以是指：邻区的SL配置信息不满足M2项需求中的N2(N2为大于0小于等于M2的整数)项需求。N2的值可以为预设的或预定义的或协议规定的或根据M2的值确定的。例如，当邻区的SL配置信息不满足M2项需求中的全部需求时，该邻区不满足业务需求。再例如，当邻区的SL配置信息不满足M2项需求中的任意一项需求时，该邻区不满足业务需求，示例性的，若终端的业务的QoS要求对应的SLRB配置采用RLC AM，当终端根据某个邻区的SL配置信息判断该邻区不能提供采用RLC AM的SLRB配置，则认为该邻区不满足终端的业务需求。
实施例三
实施例三中，邻区或第一小区向终端发送系统信息，终端根据系统信息确定邻区是否满足业务需求。
参见图5，实施例三提供的通信方法包括：
501、终端接收系统信息，系统信息包括邻区的SL配置信息，SL为两个终端之间的直连通信链路。
若邻区有多个，则终端可以接收一个系统信息，该系统信息中可以包括多个邻区的SL配置信息，或，终端可以接收多个系统信息，一个系统信息包括一个或多个邻区的SL配置信息。其中，系统信息也可以是系统信息块。
邻区的SL配置信息包括以下信息中的一个或多个：
信息1、邻区是否提供SL资源配置的信息；
信息2、邻区是否仅提供锚点载波的信息；
信息3、邻区是否提供采用第一RAT的SL资源配置的信息；
信息4、邻区是否提供采用第二RAT的SL资源配置的信息；
信息5、邻区对于采用第一RAT的SL是否仅提供锚点载波的信息；
信息6、邻区对于采用第二RAT的SL是否仅提供锚点载波的信息；
信息7、邻区提供的SLRB配置对应的QoS配置文件索引；
信息8、邻区是否有启用HARQ的SLRB配置的信息；
信息9、邻区是否有采用RLC AM的SLRB配置的信息；
信息10、邻区提供的SL资源池索引；
信息11、邻区提供的SL资源池最低CBR索引；
信息12、邻区是否有同步参考源配置的信息；
信息13、邻区提供的SL资源配置；
信息14、邻区提供的SLRB配置；
信息15、邻区提供的同步参考源配置。
其中，关于邻区的SL配置信息中包含的信息的相关描述可参见实施例一，不再赘述。
502、终端根据邻区的SL配置信息确定邻区是否满足业务需求。
实施例三提供的方法，进行SL通信的终端可以获取邻区的SL配置信息，并可以根据邻区的SL配置信息确定邻区是否满足业务需求，该情况下，终端可以重选到满足业务需求的邻区中，从而防止后续进行连接建立或连接恢复，避免增加终端的功耗，还可以提高业务传输性能和连续性(即可以解决上述问题3)。
可选的，步骤501在具体实现时，可以通过以下方式一或方式二实现。
方式一、生成系统信息，并通过非按需方式向终端发送系统信息，终端通过非按需方式从邻区接收系统信息。
方式一，系统信息可以为邻区所属的网络设备(或者说提供该邻区的网络设备)生成的，也可以是邻区生成的。
方式一在具体实现时，可以包括：邻区直接向终端发送系统信息，终端直接从邻区接收系统信息。当非按需方式为广播方式时，邻区广播系统信息，终端接收邻区广播的系统信息。
在方式一中，系统信息可以是不可以通过按需方式发送的系统信息块(例如，MIB、MIB-SL-V2X、SIB1等)。
在本申请实施例中，可以将用于指示部分或全部信息(该部分或全部信息为用于携带SL配置信息的系统信息(例如，SIB28和/或SIB29)中的部分或全部信息)的信息放到本申请中的系统信息(例如，MIB、MIB-SL-V2X或SIB1)中发送给终端，从而使得终端可以获取通过非按需方式获取不到的一些信息。其中，用于指示部分或全部信息的信息可以为直接指示该部分或全部信息的信息，也可以为间接指示该部分或全部信息的信息，本申请不作限制。
方式二、第一小区生成系统信息并向终端发送系统信息，终端从第一小区接收系统信息。
方式二，系统信息可以为第一小区所属的网络设备(或者说提供第一小区的网络设备)生成的，也可以是第一小区生成的。
其中，方式二在具体实现时包括：第一小区通过按需方式或非按需方式向终端发送系统信息。相应的，终端通过按需方式或非按需方式从第一小区接收系统信息。
若第一小区和终端通过按需方式发送和接收系统信息时，步骤501具体包括：终端向第一小区发送请求消息，请求消息用于请求邻区的SL配置信息；第一小区从终端接收请求消息，并根据请求消息向终端发送系统信息，终端从第一小区接收系统信息。其中，系统信息可以是通过按需方式发送的系统信息块(例如，intra-frequency小区重选SIB(例如，SIB3)、inter-frequency小区重选SIB(例如，SIB4)或V2X-SIB等)。
若网络设备和终端通过非按需方式发送和接收系统信息时，步骤501具体包括：第一小区直接广播系统信息，终端直接从第一小区接收系统信息。其中，系统信息可以是不可以通过按需方式发送的系统信息块(例如，MIB、MIB-SL-V2X、SIB1等)。
在方式二中，可选的，第一小区通过第一小区所属的网络设备与邻区所属的网络设备之间的接口获取邻区的SL配置信息。
其中，第一小区所属的网络设备通过与邻区所属的网络设备之间的接口(当两个网络设备均为eNB时，该接口可以为X2接口，当两个网络设备均为gNB，或一个网络设备为gNB，另一个网络设备为ng-eNB时，该接口可以为Xn接口)获取一个或多个邻区的SL配置信息。其中，若邻区的SL配置信息有更新时，该邻区所属的网络设备也通过该接口向第一小区所属的网络设备发送更新后的SL配置信息。
可选的，在步骤502之后，该方法还包括以下方法中的任意一种方法。
方法1、在邻区的SL配置信息不满足业务需求的情况下，终端不优先重选至该邻区。
方法2、在邻区的SL配置信息不满足业务需求的情况下，终端避免重选至该邻区，具体的，终端可以将不满足业务需求的邻区加入黑名单或不作为候选小区。
方法3、终端将邻区的SL配置信息不满足业务需求的邻区从第一候选小区列表(candidate list)中移除(例如，移到temp remove list)，得到第二候选小区列表；若第二候选小区列表中的小区个数大于0，终端在第二候选小区列表中进行小区重选；若第二候选小区列表中的小区个数等于0，终端将移除的小区再添加进第二候选小区列表(即将temp remove list中的邻区全部移回candidate list)，并在添加小区后的第二候选小区列表中进行小区重选。
方法4、终端将第一候选小区列表中的SL配置信息满足业务需求的邻区加入第二候选小区列表中；若第二候选小区列表中的小区个数大于0，终端在第二候选小区列表中进行小区重选；若第二候选小区列表中的小区个数等于0，终端在第一候选小区列表中进行小区重选。
在方法1至方法3中，可选的，当业务需求包括M2(M2为大于0的整数)项需求时，邻区不满足业务需求可以是指：邻区的SL配置信息不满足M2项需求中的N2(N2为大于0小于等于M2的整数)项需求。N2的值可以为预设的或预定义的或协议规定的或根据M2的值确定的。例如，当邻区的SL配置信息不满足M2项需求中的全部需求时，该邻区不满足业务需求。再例如，当邻区的SL配置信息不满足M2项需求中的任意一项需求时，该邻区不满足业务需求，示例性的，若终端的业务的QoS要求对应的SLRB配置采用RLC AM，当终端根据某个邻区的SL配置信息判断该邻区不能提供采用RLC AM的SLRB配置，则认为该邻区不满足终端的业务需求。再例如，若终端被配置为采用第一RAT进行SL通信，但邻区仅提供采用第二RAT的SL资源配置，则认为该邻区不满足终端的业务需求。再例如，若终端具备SL通信能力、且终端被配置进行SL通信，但邻区不提供SL资源配置，则认为该邻区不满足终端的业务需求。
在方法4中，当业务需求包括M1(M1为大于0的整数)项需求时，邻区满足业务需求可以是指：邻区的SL配置信息满足M1项需求中的N1(N1为大于0小于等于M1的整数)项需求。N1的值可以为预设的或预定义的或协议规定的或根据M1的值确定的。例如，当邻区的SL配置信息满足M1项需求中的全部需求时，该邻区满足业务需求。再例如，当邻区的SL配置信息满足M1项需求中的任意一项需求时，该邻区满足业务需求，示例性的，若终端的业务的QoS要求对应的SLRB配置采用RLC AM，则当终端根据某个邻区的SL配置信息判断该邻区能提供采用RLC AM的SLRB配置，则认为该邻区能够满足终端的业务需求。再例如，若终端被配置为既采用第一RAT进行SL通信，还采用第二RAT进行SL通信，邻区既提供采用第一RAT的SL资源配置，也提供采用第二RAT的SL资源配置，则认为该邻区满足终端的业务需求。再例如，若终端具备SL通信能力、且终端被配置进行SL通信，邻区也提供SL资源配置，则认为该邻区满足终端的业务需求。
需要说明的是，当邻区的SL配置信息中的不同的信息作为终端小区重选的依据时，终端可以执行上述方法1至方法4中的不同的方法。例如，当邻区的SL配置信息中的信息1至信息6中的一个或多个信息作为终端小区重选的依据时，终端可以执行上述方法1或方法2。再例如，当邻区的SL配置信息中的信息7至信息12中的一个或多 个信息作为终端小区重选的依据时，终端可以执行上述方法3或方法4。再例如，当邻区的SL配置信息中的信息13作为小区重选的依据时，终端可以执行上述方法1或方法2。再例如，当邻区的SL配置信息中的信息14或信息15作为小区重选的依据时，终端可以执行上述方法3或方法4。
也就是说，SL配置信息中的信息可以属于不同的信息组，例如，信息1至信息6属于一个信息组，信息7至信息12属于另一个信息组，不同的信息组对应不同的方法。例如，若分为两组，第一信息组采用方法1，第二信息组采用方法3，则可先根据第一信息组采用方法1对候选小区进行第一次筛选，再对第一次筛选后的小区集合根据第二信息组采用方法3进行第二次筛选。对于第二次筛选后得到的小区集合，按照现有技术进行小区重选。
实施例四
实施例四中，邻区或第一小区向终端发送系统信息，终端根据系统信息中的部分信息确定邻区是否满足业务需求，再在确定出的邻区中确定各个邻区所采用频点的优先级。
参见图6，实施例四提供的通信方法包括：
601、终端接收系统信息，系统信息包括邻区的SL配置信息，SL为两个终端之间的直连通信链路。
若邻区有多个，则终端可以接收一个系统信息，该系统信息中可以包括多个邻区的SL配置信息，或，终端可以接收多个系统信息，一个系统信息包括一个邻区的SL配置信息。
邻区的SL配置信息包括以下信息中的一个或多个：
信息1、邻区是否提供SL资源配置的信息；
信息2、邻区是否仅提供锚点载波的信息；
信息3、邻区是否提供采用第一RAT的SL资源配置的信息；
信息4、邻区是否提供采用第二RAT的SL资源配置的信息；
信息5、邻区对于采用第一RAT的SL是否仅提供锚点载波的信息；
信息6、邻区对于采用第二RAT的SL是否仅提供锚点载波的信息。
其中，关于邻区的SL配置信息中包含的信息的相关描述可参见实施例一，不再赘述。
602、终端根据邻区的SL配置信息确定邻区是否满足业务需求。
实施例四提供的方法，进行SL通信的终端可以获取邻区的SL配置信息，并可以根据邻区的SL配置信息确定邻区是否满足业务需求，该情况下，终端可以重选到满足业务需求的邻区中，从而防止后续进行连接建立或连接恢复，避免增加终端的功耗，还可以提高业务传输性能和连续性(即可以解决上述问题3)。
其中，步骤601的具体实现可参见步骤501的具体实现，不再赘述。
可选的，在步骤602之后，该方法还可以包括实施例三中的方法1至方法4中的任意一种方法，不再赘述。
可选的，系统信息中还包括邻区的辅助信息，邻区的辅助信息包括以下信息中的一个或多个：
信息7、邻区提供的SLRB配置对应的QoS配置文件索引；
信息8、邻区是否有启用HARQ的SLRB配置的信息；
信息9、邻区是否有采用RLC AM的SLRB配置的信息；
信息10、邻区提供的SL资源池索引；
信息11、邻区提供的SL资源池最低CBR索引；
信息12、邻区是否有同步参考源配置的信息；
信息13、邻区提供的SL资源配置；
信息14、邻区提供的SLRB配置；
信息15、邻区提供的同步参考源配置。
基于邻区的辅助信息，在第一种可能的实现方式中，终端可以根据信息1至信息6中的一个或多个信息确定候选小区列表中的、不满足业务需求的邻区(记为目标邻区)，并根据邻区的辅助信息确定邻区中的除目标邻区之外的邻区采用的频点的优先级，比如，根据邻区的辅助信息将邻区中的除目标邻区之外的邻区中的满足业务需求的邻区采用的频点确定为优先级最高的频点。
示例性的，终端可以根据邻区的辅助信息将邻区中的除目标邻区之外的邻区中的满足业务需求最多的邻区采用的频点确定为优先级最高的频点。例如，若邻区有8个，记为邻区1至邻区8，终端根据SL配置信息确定邻区5至邻区8不满足业务需求，此时，终端根据邻区的辅助信息确定邻区1至邻区4采用的频点的优先级，若邻区4的辅助信息满足最多的业务需求(比如，终端的业务需求包括4项需求，邻区4的辅助信息可以满足这4项需求中的4项，其他邻区只能满足4项需求中的2项，此时邻区4的辅助信息满足最多的业务需求)，则将邻区4采用的频点确定为优先级最高的频点。
在第二种可能的实现方式中，终端可以根据信息1至信息6中的一个或多个信息确定候选小区列表中的、满足业务需求的邻区(记为目标邻区)的频点，并根据邻区的辅助信息确定目标邻区中的邻区采用的频点的优先级，例如，将目标邻区中的辅助信息满足最多的业务需求的邻区采用的频点确定为优先级最高的频点。
例如，若邻区有8个，记为邻区1至邻区8，终端根据SL配置信息确定邻区5至邻区8满足业务需求，此时，若邻区5的辅助信息满足最多的业务需求，则将邻区5采用的频点确定为优先级最高的频点。
在第一种可能的实现方式和第二种可能的实现方式中，关于满足和不满足业务需求的描述可参见实施例一，不再赘述。
在第一种可能的实现方式和第二种可能的实现方式中，在确定邻区采用的频点的优先级之后，可以根据邻区采用的频点的优先级进行小区重选，具体可参见现有技术，不再赘述。
本申请上述实施例一至实施例四提供的方法可以应用于V2X通信场景，也可以应用于其他SL通信场景，此时，本申请中的与V2X相关的信息替换为其他SL通信场景中的相应信息即可，例如，MIB-SL-V2X替换为其他SL通信场景中的MIB即可。
另外，本申请实施例中的邻区的SL配置信息也可以携带在系统信息之外的其他信息中，例如，专用信令中，本申请只是以系统信息为例进行举例说明，但这不应当认为是对本申请的限定。
上述主要从各个网元之间交互的角度对本申请实施例的方案进行了介绍。可以理解的是，各个网元，例如，网络设备和终端为了实现上述功能，其包含了执行各个功 能相应的硬件结构和/或软件模块。本领域技术人员应该很容易意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，本申请能够以硬件或硬件和计算机软件的结合形式来实现。某个功能究竟以硬件还是计算机软件驱动硬件的方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。
本申请实施例可以根据上述方法示例对网络设备和终端进行功能单元的划分，例如，可以对应各个功能划分各个功能单元，也可以将两个或两个以上的功能集成在一个处理单元中。上述集成的单元既可以采用硬件的形式实现，也可以采用软件功能单元的形式实现。需要说明的是，本申请实施例中对单元的划分是示意性的，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式。
在采用集成的单元的情况下，图7示出了上述实施例中所涉及的通信装置(记为通信装置70)的一种可能的结构示意图，该通信装置70包括处理单元701和通信单元702，还可以包括存储单元703。图7所示的结构示意图可以用于示意上述实施例中所涉及的网络设备或终端的结构。其中，网络设备可以提供上述第一小区和/或邻区。
其中，当通信装置70用于示意上述实施例中的终端时，通信装置70可以执行以下实施例1、实施例2以及实施例3中的一个或多个中所示的动作。当通信装置70用于示意上述实施例中的网络设备、且该网络设备提供邻区时，通信装置70可以执行以下实施例4和/或实施例6中所示的动作。当通信装置70用于示意上述实施例中的网络设备、且该网络设备提供第一小区时，通信装置70可以执行以下实施例5和/或实施例7中所示的动作。
实施例1中，所述通信单元，用于通过非按需方式从第一小区的邻区接收系统信息，所述系统信息包括所述邻区的侧行链路配置信息，所述侧行链路为所述通信装置和其他通信装置之间的直连通信链路；所述处理单元，用于根据所述邻区的侧行链路配置信息确定所述邻区采用的频点的优先级。
结合实施例1，在一种可能的实现方式中，所述通信单元，具体用于直接从所述邻区接收所述系统信息。
结合实施例1，在一种可能的实现方式中，所述邻区的侧行链路配置信息包括以下信息中的一个或多个：所述邻区是否提供侧行链路资源配置的信息；所述邻区是否仅提供锚点载波的信息；所述邻区是否提供采用第一无线接入技术的侧行链路资源配置的信息；所述邻区是否提供采用第二无线接入技术的侧行链路资源配置的信息；所述邻区对于采用所述第一无线接入技术的侧行链路是否仅提供锚点载波的信息；所述邻区对于采用所述第二无线接入技术的侧行链路是否仅提供锚点载波的信息。
实施例2中，所述通信单元，用于从第一小区接收系统信息，所述系统信息包括所述第一小区的邻区的侧行链路配置信息，所述侧行链路为所述通信装置和其他通信装置之间的直连通信链路，所述邻区的侧行链路配置信息包括以下信息中的一个或多个：所述邻区是否提供侧行链路资源配置的信息；所述邻区是否仅提供锚点载波的信息；所述邻区是否提供采用第一无线接入技术的侧行链路资源配置的信息；所述邻区是否提供采用第二无线接入技术的侧行链路资源配置的信息；所述邻区对于采用所述第一无线接入技术的侧行链路是否仅提供锚点载波的信息；所述邻区对于采用所述第二无线接入技术的侧行链路是否 仅提供锚点载波的信息；所述处理单元，用于根据所述邻区的侧行链路配置信息确定所述邻区采用的频点的优先级。
结合实施例2，在一种可能的实现方式中，所述通信单元，具体用于通过按需方式或非按需方式从所述第一小区接收系统信息。
结合实施例2，在一种可能的实现方式中，所述通信单元，具体用于向所述第一小区发送请求消息，所述请求消息用于请求所述邻区的侧行链路配置信息；从所述第一小区接收所述系统信息。
结合实施例2，在一种可能的实现方式中，所述通信单元，具体用于直接从所述第一小区接收所述系统信息。
结合实施例2，在一种可能的实现方式中，所述第一小区通过所述第一小区所属的网络设备与所述邻区所属的网络设备之间的接口获取所述邻区的侧行链路配置信息。
结合实施例1或实施例2，在一种可能的实现方式中，所述侧行链路资源配置包括载波内侧行链路资源配置和/或载波间侧行链路资源配置。
结合实施例1或实施例2，在一种可能的实现方式中，所述邻区的载波内侧行链路资源配置是指与所述邻区采用的频点相同的频点的侧行链路资源配置，或者，与所述邻区采用的载波相同的载波上的侧行链路资源配置；所述邻区的载波间侧行链路资源配置是指与所述邻区采用的频点不同的频点的侧行链路资源配置，或者，所述邻区采用的频点的邻频上的侧行链路资源配置，或者，与所述邻区采用的载波不同的载波上的侧行链路资源配置。
结合实施例1或实施例2，在一种可能的实现方式中，所述处理单元，具体用于：在根据所述邻区的侧行链路配置信息确定所述邻区提供侧行链路资源配置的情况下，将所述邻区采用的频点确定为优先级最高的频点。
结合实施例1或实施例2，在一种可能的实现方式中，所述通信装置满足以下条件中的一个或多个：所述通信装置具备侧行链路通信能力，所述通信装置被配置进行侧行链路通信，所述通信装置被授权进行侧行链路通信。
结合实施例1或实施例2，在一种可能的实现方式中，所述处理单元，具体用于：在所述通信装置被配置为既采用所述第一无线接入技术进行侧行链路通信，还采用所述第二无线接入技术进行侧行链路通信的情况下，将既提供采用所述第一无线接入技术的侧行链路资源配置，还提供采用所述第二无线接入技术的侧行链路资源配置的所述邻区采用的频点确定为优先级最高的频点；或者，在所述通信装置被配置仅采用所述第一无线接入技术进行侧行链路通信的情况下，将提供采用所述第一无线接入技术的侧行链路资源配置的所述邻区采用的频点确定为优先级最高的频点；或者，在所述通信装置被配置仅采用所述第二无线接入技术进行侧行链路通信的情况下，将采用所述第二无线接入技术的侧行链路资源配置的所述邻区采用的频点确定为优先级最高的频点。
结合实施例1或实施例2，在一种可能的实现方式中，在所述通信装置被配置为既采用所述第一无线接入技术进行侧行链路通信，还采用所述第二无线接入技术进行侧行链路通信的情况下，所述通信装置满足以下条件中的一个或多个：所述通信装置具备既采用所述第一无线接入技术进行侧行链路通信，还采用所述第二无线接入技术进行侧行链路通信的能力；所述通信装置被授权进行采用所述第一无线接入技术和所述第二无线接入技术的侧行链路通信；或者，在所述通信装置被配置仅采用所述第一无线接入技术进行侧行链路通 信的情况下，所述通信装置满足以下条件中的一个或多个：所述通信装置具备采用所述第一无线接入技术进行侧行链路通信的能力，所述通信装置被授权进行采用所述第一无线接入技术的侧行链路通信；或者，在所述通信装置被配置仅采用所述第二无线接入技术进行侧行链路通信的情况下，所述通信装置满足以下条件中的一个或多个：所述通信装置具备采用所述第二无线接入技术进行侧行链路通信的能力，所述通信装置被授权进行采用所述第二无线接入技术的侧行链路通信。
结合实施例1或实施例2，在一种可能的实现方式中，通过1个比特指示所述邻区是否提供侧行链路资源配置，和/或，通过1个比特指示所述邻区是否仅提供锚点载波。
结合实施例1或实施例2，在一种可能的实现方式中，通过2个比特指示所述邻区是否提供采用所述第一无线接入技术和/或所述第二无线接入技术的侧行链路资源配置。
结合实施例1或实施例2，在一种可能的实现方式中，所述侧行链路资源配置包括侧行链路发送资源配置，和/或，侧行链路接收资源配置。
结合实施例1或实施例2，在一种可能的实现方式中，所述邻区不提供侧行链路资源配置表示所述邻区不通过系统信息提供侧行链路资源配置，也不通过专用信令提供侧行链路资源配置。
结合实施例1或实施例2，在一种可能的实现方式中，述邻区不提供侧行链路资源配置表示所述邻区不通过系统信息提供侧行链路资源配置，但通过专用信令提供侧行链路资源配置。
结合实施例1或实施例2，在一种可能的实现方式中，所述邻区的侧行链路配置信息包括以下信息中的一个或多个：所述邻区提供的侧行链路无线承载配置对应的QoS配置文件索引；所述邻区是否有启用HARQ的侧行链路无线承载配置的信息；所述邻区是否有采用RLC AM的侧行链路无线承载配置的信息；所述邻区提供的侧行链路资源池索引；所述邻区提供的侧行链路资源池最低CBR索引；所述邻区是否有同步参考源配置的信息；所述邻区提供的侧行链路资源配置；所述邻区提供的侧行链路无线承载配置；所述邻区提供的同步参考源配置。
结合实施例1或实施例2，在一种可能的实现方式中，所述处理单元，具体用于：当所述通信装置被配置了在侧行链路上传输业务时，根据所述邻区的侧行链路配置信息将所述邻区中的满足业务需求的邻区采用的频点确定为优先级最高的频点。
实施例3中，所述通信单元，用于接收系统信息，所述系统信息包括第一小区的邻区的侧行链路配置信息，所述邻区的侧行链路配置信息包括以下信息中的一个或多个：所述邻区是否提供侧行链路资源配置的信息；所述邻区是否仅提供锚点载波的信息；所述邻区是否提供采用第一无线接入技术的侧行链路资源配置的信息；所述邻区是否提供采用第二无线接入技术的侧行链路资源配置的信息；所述邻区对于采用所述第一无线接入技术的侧行链路是否仅提供锚点载波的信息；所述邻区对于采用所述第二无线接入技术的侧行链路是否仅提供锚点载波的信息；所述邻区提供的侧行链路无线承载配置对应的QoS配置文件索引；所述邻区是否有启用HARQ的侧行链路无线承载配置的信息；所述邻区是否有采用RLC AM的侧行链路无线承载配置的信息；所述邻区提供的侧行链路资源池索引；所述邻区提供的侧行链路资源池最低CBR索引；所述邻区是否有同步参考源配置的信息；所述邻区提供的侧行链路资源配置；所述邻区提供的侧行链路无线承载配置；所述邻区提供的同步参考 源配置；所述处理单元，用于根据所述第一小区的邻区的侧行链路配置信息确定所述邻区是否满足业务需求。
结合实施例3，在一种可能的实现方式中，所述通信单元，具体用于通过非按需方式从所述邻区接收系统信息。
结合实施例3，在一种可能的实现方式中，所述通信单元，具体用于直接从所述邻区接收所述系统信息。
结合实施例3，在一种可能的实现方式中，所述通信单元，具体用于从所述第一小区接收系统信息。
结合实施例3，在一种可能的实现方式中，所述通信单元，具体用于通过按需方式或非按需方式从所述第一小区接收所述系统信息。
结合实施例3，在一种可能的实现方式中，所述通信单元，具体用于向所述第一小区发送请求消息，所述请求消息用于请求所述邻区的侧行链路配置信息，并从所述第一小区接收所述系统信息。
结合实施例3，在一种可能的实现方式中，所述通信单元，具体用于直接从所述第一小区接收所述系统信息。
结合实施例3，在一种可能的实现方式中，所述第一小区通过所述第一小区所属的网络设备与所述邻区所属的网络设备之间的接口获取所述邻区的侧行链路配置信息。
结合实施例3，在一种可能的实现方式中，所述侧行链路资源配置包括载波内侧行链路资源配置和/或载波间侧行链路资源配置。
结合实施例3，在一种可能的实现方式中，所述邻区的载波内侧行链路资源配置是指与所述邻区采用的频点相同的频点的侧行链路资源配置，或者，与所述邻区采用的载波相同的载波上的侧行链路资源配置；所述邻区的载波间侧行链路资源配置是指与所述邻区采用的频点不同的频点的侧行链路资源配置，或者，所述邻区采用的频点的邻频上的侧行链路资源配置，或者，与所述邻区采用的载波不同的载波上的侧行链路资源配置。
结合实施例3，在一种可能的实现方式中，通过1个比特指示所述邻区是否提供侧行链路资源配置，和/或，通过1个比特指示所述邻区是否仅提供锚点载波。
结合实施例3，在一种可能的实现方式中，通过2个比特指示所述邻区是否提供采用所述第一无线接入技术和/或所述第二无线接入技术的侧行链路资源配置。
结合实施例3，在一种可能的实现方式中，所述侧行链路资源配置包括侧行链路发送资源配置，和/或，侧行链路接收资源配置。
结合实施例3，在一种可能的实现方式中，所述邻区不提供侧行链路资源配置表示所述邻区不通过系统信息提供侧行链路资源配置，也不通过专用信令提供侧行链路资源配置。
结合实施例3，在一种可能的实现方式中，所述邻区不提供侧行链路资源配置表示所述邻区不通过系统信息提供侧行链路资源配置，但通过专用信令提供侧行链路资源配置。
结合实施例3，在一种可能的实现方式中，所述处理单元，具体用于：在所述邻区的侧行链路配置信息不满足所述业务需求的情况下，不优先重选至所述邻区。
结合实施例3，在一种可能的实现方式中，所述处理单元，具体用于：在所述邻区的侧行链路配置信息不满足所述业务需求的情况下，避免重选至所述邻区。
结合实施例3，在一种可能的实现方式中，所述处理单元，具体用于：将所述邻 区的侧行链路配置信息不满足所述业务需求的邻区从第一候选小区列表中移除，得到第二候选小区列表；若所述第二候选小区列表中的小区个数大于0，在所述第二候选小区列表中进行小区重选；若所述第二候选小区列表中的小区个数等于0，将移除的小区再添加进所述第二候选小区列表，并在添加小区后的所述第二候选小区列表中进行小区重选。
结合实施例3，在一种可能的实现方式中，所述处理单元，具体用于：将第一候选小区列表中的侧行链路配置信息满足所述业务需求的邻区加入第二候选小区列表中；若所述第二候选小区列表中的小区个数大于0，在所述第二候选小区列表中进行小区重选；若所述第二候选小区列表中的小区个数等于0，在所述第一候选小区列表中进行小区重选。
实施例4中，通信单元和处理单元；所述处理单元，用于生成(例如，在所述邻区上生成)系统信息，所述系统信息包括所述邻区的侧行链路配置信息，所述侧行链路为两个终端之间的直连通信链路；所述通信单元，用于在所述邻区上通过非按需方式向位于所述第一小区中的终端发送系统信息，所述系统信息中的所述邻区的侧行链路配置信息用于所述终端确定所述邻区采用的频点的优先级。
结合实施例4，在一种可能的实现方式中，所述通信单元，具体用于在所述邻区上直接向所述终端发送所述系统信息。
结合实施例4，在一种可能的实现方式中，所述邻区的侧行链路配置信息包括以下信息中的一个或多个：所述邻区是否提供侧行链路资源配置的信息；所述邻区是否仅提供锚点载波的信息；所述邻区是否提供采用第一无线接入技术的侧行链路资源配置的信息；所述邻区是否提供采用第二无线接入技术的侧行链路资源配置的信息；所述邻区对于采用所述第一无线接入技术的侧行链路是否仅提供锚点载波的信息；所述邻区对于采用所述第二无线接入技术的侧行链路是否仅提供锚点载波的信息。
实施例5中，通信单元和处理单元；所述处理单元，用于生成(例如，在所述第一小区上生成)系统信息，所述系统信息包括所述第一小区的邻区的侧行链路配置信息，所述侧行链路为两个终端之间的直连通信链路，所述邻区的侧行链路配置信息包括以下信息中的一个或多个：所述邻区是否提供侧行链路资源配置的信息；所述邻区是否仅提供锚点载波的信息；所述邻区是否提供采用第一无线接入技术的侧行链路资源配置的信息；所述邻区是否提供采用第二无线接入技术的侧行链路资源配置的信息；所述邻区对于采用所述第一无线接入技术的侧行链路是否仅提供锚点载波的信息；所述邻区对于采用所述第二无线接入技术的侧行链路是否仅提供锚点载波的信息；所述通信单元，用于在所述第一小区上向位于所述第一小区中的终端发送所述系统信息，所述系统信息中的所述邻区的侧行链路配置信息用于所述终端确定所述邻区采用的频点的优先级。
结合实施例5，在一种可能的实现方式中，所述通信单元，具体用于在所述第一小区上通过按需方式或非按需方式向所述终端发送所述系统信息。
结合实施例5，在一种可能的实现方式中，所述通信单元，具体用于在所述第一小区上从所述终端接收请求消息，所述请求消息用于请求所述邻区的侧行链路配置信息，在所述第一小区上根据所述请求消息向所述终端发送所述系统信息。
结合实施例5，在一种可能的实现方式中，所述通信单元，具体用于在所述第一小区 上直接向所述终端发送所述系统信息。
结合实施例5，在一种可能的实现方式中，所述第一小区通过所述第一小区所属的网络设备与所述邻区所属的网络设备之间的接口获取所述邻区的侧行链路配置信息。
结合实施例4或实施例5，在一种可能的实现方式中，所述侧行链路资源配置包括载波内侧行链路资源配置和/或载波间侧行链路资源配置。
结合实施例4或实施例5，在一种可能的实现方式中，所述邻区的载波内侧行链路资源配置是指与所述邻区采用的频点相同的频点的侧行链路资源配置，或者，与所述邻区采用的载波相同的载波上的侧行链路资源配置；所述邻区的载波间侧行链路资源配置是指与所述邻区采用的频点不同的频点的侧行链路资源配置，或者，所述邻区采用的频点的邻频上的侧行链路资源配置，或者，与所述邻区采用的载波不同的载波上的侧行链路资源配置。
结合实施例4或实施例5，在一种可能的实现方式中，通过1个比特指示所述邻区是否提供侧行链路资源配置，和/或，通过1个比特指示所述邻区是否仅提供锚点载波。
结合实施例4或实施例5，在一种可能的实现方式中，通过2个比特指示所述邻区是否提供采用所述第一无线接入技术和/或所述第二无线接入技术的侧行链路资源配置。
结合实施例4或实施例5，在一种可能的实现方式中，所述侧行链路资源配置包括侧行链路发送资源配置，和/或，侧行链路接收资源配置。
结合实施例4或实施例5，在一种可能的实现方式中，所述邻区不提供侧行链路资源配置表示所述邻区不通过系统信息提供侧行链路资源配置，也不通过专用信令提供侧行链路资源配置。
结合实施例4或实施例5，在一种可能的实现方式中，所述邻区不提供侧行链路资源配置表示所述邻区不通过系统信息提供侧行链路资源配置，但通过专用信令提供侧行链路资源配置。
结合实施例4或实施例5，在一种可能的实现方式中，所述邻区的侧行链路配置信息包括以下信息中的一个或多个：所述邻区提供的侧行链路无线承载配置对应的QoS配置文件索引；所述邻区是否有启用HARQ的侧行链路无线承载配置的信息；所述邻区是否有采用RLC AM的侧行链路无线承载配置的信息；所述邻区提供的侧行链路资源池索引；所述邻区提供的侧行链路资源池最低CBR索引；所述邻区是否有同步参考源配置的信息；所述邻区提供的侧行链路资源配置；所述邻区提供的侧行链路无线承载配置；所述邻区提供的同步参考源配置。
实施例6中，处理单元和通信单元；所述处理单元，用于生成(例如，在所述邻区上生成)系统信息，所述系统信息包括第一小区的邻区的侧行链路配置信息，所述邻区的侧行链路配置信息包括以下信息中的一个或多个：所述邻区是否提供侧行链路资源配置的信息；所述邻区是否仅提供锚点载波的信息；所述邻区是否提供采用第一无线接入技术的侧行链路资源配置的信息；所述邻区是否提供采用第二无线接入技术的侧行链路资源配置的信息；所述邻区对于采用所述第一无线接入技术的侧行链路是否仅提供锚点载波的信息；所述邻区对于采用所述第二无线接入技术的侧行链路是否仅提供锚点载波的信息；所述邻区提供的侧行链路无线承载配置对应的QoS配置文件索引；所述邻区是否有启用HARQ的侧行链路无线承载配置的信息；所述邻区是否有采用RLC AM的侧行链路无线承载配置的信息；所述邻区提供的侧行链路资源池索引；所述邻区提供的侧行链路资源池最低CBR索引；所 述邻区是否有同步参考源配置的信息；所述邻区提供的侧行链路资源配置；所述邻区提供的侧行链路无线承载配置；所述邻区提供的同步参考源配置；其中，所述侧行链路为两个终端之间的直连通信链路；所述通信单元，用于在所述邻区上通过非按需方式向位于所述第一小区中的终端发送系统信息，所述系统信息中的所述邻区的侧行链路配置信息用于所述终端确定所述邻区是否满足业务需求。
结合实施例6，在一种可能的实现方式中，所述通信单元，具体用于直接向所述终端发送所述系统信息。
实施例7中，处理单元和通信单元；所述处理单元，用于生成(例如，在所述第一小区上生成)系统信息，所述系统信息包括第一小区的邻区的侧行链路配置信息，所述邻区的侧行链路配置信息包括以下信息中的一个或多个：所述邻区是否提供侧行链路资源配置的信息；所述邻区是否仅提供锚点载波的信息；所述邻区是否提供采用第一无线接入技术的侧行链路资源配置的信息；所述邻区是否提供采用第二无线接入技术的侧行链路资源配置的信息；所述邻区对于采用所述第一无线接入技术的侧行链路是否仅提供锚点载波的信息；所述邻区对于采用所述第二无线接入技术的侧行链路是否仅提供锚点载波的信息；所述邻区提供的侧行链路无线承载配置对应的QoS配置文件索引；所述邻区是否有启用HARQ的侧行链路无线承载配置的信息；所述邻区是否有采用RLC AM的侧行链路无线承载配置的信息；所述邻区提供的侧行链路资源池索引；所述邻区提供的侧行链路资源池最低CBR索引；所述邻区是否有同步参考源配置的信息；所述邻区提供的侧行链路资源配置；所述邻区提供的侧行链路无线承载配置；所述邻区提供的同步参考源配置；其中，所述侧行链路为两个终端之间的直连通信链路；所述通信单元，用于在所述第一小区上向位于所述第一小区中的终端发送所述系统信息，所述系统信息中的所述邻区的侧行链路配置信息用于所述终端确定所述邻区是否满足业务需求。
结合实施例7，在一种可能的实现方式中，所述通信单元，具体用于在所述第一小区上通过按需方式或非按需方式向所述终端发送所述系统信息。
结合实施例7，在一种可能的实现方式中，所述通信单元，具体用于在所述第一小区上从所述终端接收请求消息，所述请求消息用于请求所述邻区的侧行链路配置信息，在所述第一小区上根据所述请求消息向所述终端发送所述系统信息。
结合实施例7，在一种可能的实现方式中，所述通信单元，具体用于在所述第一小区上直接向所述终端发送所述系统信息。
结合实施例7，在一种可能的实现方式中，所述第一小区通过所述第一小区所属的网络设备与所述邻区所属的网络设备之间的接口获取所述邻区的侧行链路配置信息。
结合实施例6或实施例7，在一种可能的实现方式中，所述侧行链路资源配置包括载波内侧行链路资源配置和/或载波间侧行链路资源配置。
结合实施例6或实施例7，在一种可能的实现方式中，所述邻区的载波内侧行链路资源配置是指与所述邻区采用的频点相同的频点的侧行链路资源配置，或者，与所述邻区采用的载波相同的载波上的侧行链路资源配置；所述邻区的载波间侧行链路资源配置是指与所述邻区采用的频点不同的频点的侧行链路资源配置，或者，所述邻区采用的频点的邻频上的侧行链路资源配置，或者，与所述邻区采用的载波不同的载波上的侧行链路资源配置。
结合实施例6或实施例7，在一种可能的实现方式中，通过1个比特指示所述邻区是否 提供侧行链路资源配置，和/或，通过1个比特指示所述邻区是否仅提供锚点载波。
结合实施例6或实施例7，在一种可能的实现方式中，通过2个比特指示所述邻区是否提供采用所述第一无线接入技术和/或所述第二无线接入技术的侧行链路资源配置。
结合实施例6或实施例7，在一种可能的实现方式中，所述侧行链路资源配置包括侧行链路发送资源配置，和/或，侧行链路接收资源配置。
结合实施例6或实施例7，在一种可能的实现方式中，所述邻区不提供侧行链路资源配置表示所述邻区不通过系统信息提供侧行链路资源配置，也不通过专用信令提供侧行链路资源配置。
结合实施例6或实施例7，在一种可能的实现方式中，所述邻区不提供侧行链路资源配置表示所述邻区不通过系统信息提供侧行链路资源配置，但通过专用信令提供侧行链路资源配置。
其中，通信装置70可以是一个设备，也可以是设备内的芯片。
其中，当通信装置70为一个设备时，处理单元701可以是处理器或控制器，通信单元702可以是通信接口、收发器、收发机、收发电路、收发装置等。其中，通信接口是统称，可以包括一个或多个接口。存储单元703可以是存储器。当通信装置70为一个设备内的芯片时，处理单元701可以是处理器或控制器，通信单元702可以是输入接口和/或输出接口、管脚或电路等。存储单元703可以是该芯片内的存储单元(例如，寄存器、缓存等)，也可以是设备内的位于该芯片外部的存储单元(例如，只读存储器、随机存取存储器等)。
其中，通信单元也可以称为收发单元。通信装置70中的具有收发功能的天线和控制电路可以视为通信装置70的通信单元702，具有处理功能的处理器可以视为通信装置70的处理单元701。可选的，通信单元702中用于实现接收功能的器件可以视为接收单元，接收单元用于执行本申请实施例中的接收的步骤，接收单元可以为接收机、接收器、接收电路等。通信单元702中用于实现发送功能的器件可以视为发送单元，发送单元用于执行本申请实施例中的发送的步骤，发送单元可以为发送机、发送器、发送电路等。
图7中的集成的单元如果以软件功能模块的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本申请实施例的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的全部或部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)或处理器(processor)执行本申请各个实施例所述方法的全部或部分步骤。存储计算机软件产品的存储介质包括：U盘、移动硬盘、只读存储器(read-only memory，ROM)、随机存取存储器(random access memory，RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
图7中的单元也可以称为模块，例如，处理单元可以称为处理模块。
本申请实施例还提供了一种通信装置(记为通信装置80)的硬件结构示意图，参见图8或图9，该通信装置80包括处理器801，可选的，还包括与处理器801连接的存储器802。
处理器801可以是一个通用中央处理器(central processing unit，CPU)、微处理器、特定应用集成电路(application-specific integrated circuit，ASIC)，或者一个或多个用于控制本申请方案程序执行的集成电路。处理器801也可以包括多个CPU，并且处理器801可以是一个单核(single-CPU)处理器，也可以是多核(multi-CPU)处理器。这里的处理器可以指一个或多个设备、电路或用于处理数据(例如计算机程序指令)的处理核。
存储器802可以是ROM或可存储静态信息和指令的其他类型的静态存储设备、RAM或者可存储信息和指令的其他类型的动态存储设备，也可以是电可擦可编程只读存储器(electrically erasable programmable read-only memory，EEPROM)、只读光盘(compact disc read-only memory，CD-ROM)或其他光盘存储、光碟存储(包括压缩光碟、激光碟、光碟、数字通用光碟、蓝光光碟等)、磁盘存储介质或者其他磁存储设备、或者能够用于携带或存储具有指令或数据结构形式的期望的程序代码并能够由计算机存取的任何其他介质，本申请实施例对此不作任何限制。存储器802可以是独立存在，也可以和处理器801集成在一起。其中，存储器802中可以包含计算机程序代码。处理器801用于执行存储器802中存储的计算机程序代码，从而实现本申请实施例提供的方法。
在第一种可能的实现方式中，参见图8，通信装置80还包括收发器803。处理器801、存储器802和收发器803通过总线相连接。收发器803用于与其他设备或通信网络通信。可选的，收发器803可以包括发射机和接收机。收发器803中用于实现接收功能的器件可以视为接收机，接收机用于执行本申请实施例中的接收的步骤。收发器803中用于实现发送功能的器件可以视为发射机，发射机用于执行本申请实施例中的发送的步骤。
基于第一种可能的实现方式，图8所示的结构示意图可以用于示意上述实施例中所涉及的网络设备或终端的结构。其中，网络设备可以提供上述第一小区和/或邻区。
当图8所示的结构示意图用于示意上述实施例中所涉及的网络设备的结构时，处理器801用于对网络设备的动作进行控制管理，例如，处理器801用于支持网络设备通过邻区执行图3中的301和302和/或通过第一小区执行图4中的401和402，和/或本申请实施例中所描述的其他过程中的网络设备执行的动作。处理器801可以通过收发器803与其他网络实体通信，例如，与图3中示出的终端之间通信。存储器802用于存储网络设备的程序代码和数据。
当图8所示的结构示意图用于示意上述实施例中所涉及的终端的结构时，处理器801用于对终端的动作进行控制管理，例如，处理器801用于支持终端执行图3中的302至304，图4中的402至404，图5中的501和502，图6中的601和602，和/或本申请实施例中所描述的其他过程中的终端执行的动作。处理器801可以通过收发器803与其他网络实体通信，例如，与图3中示出的网络设备提供的邻区之间通信。存储器802用于存储终端的程序代码和数据。
在第二种可能的实现方式中，处理器801包括逻辑电路以及输入接口和/或输出接口。其中，输出接口用于执行相应方法中的发送的动作，输入接口用于执行相应方法中的接收的动作。
基于第二种可能的实现方式，参见图9，图9所示的结构示意图可以用于示意上述实施例中所涉及的网络设备或终端的结构。其中，网络设备可以提供上述第一小区和/或邻区。
当图9所示的结构示意图用于示意上述实施例中所涉及的网络设备的结构时，处理器801用于对网络设备的动作进行控制管理，例如，处理器801用于支持网络设备通过邻区执行图3中的301和302和/或通过第一小区执行图4中的401和402，和/或本申请实施例中所描述的其他过程中的网络设备执行的动作。处理器801可以通过输入接口和/或输出接口与其他网络实体通信，例如，与图3中示出的终端之间通信。存储器802用于存储网络设备的程序代码和数据。
当图9所示的结构示意图用于示意上述实施例中所涉及的终端的结构时，处理器801用于对终端的动作进行控制管理，例如，处理器801用于支持终端执行图3中的302至304，图4中的402至404，图5中的501和502，图6中的601和602，和/或本申请实施例中所描述的其他过程中的终端执行的动作。处理器801可以通过输入接口和/或输出接口与其他网络实体通信，例如，与图3中示出的网络设备提供的邻区之间通信。存储器802用于存储终端的程序代码和数据。
本申请实施例还提供了一种计算机可读存储介质，包括指令，当其在计算机上运行时，使得计算机执行上述任一方法。
本申请实施例还提供了一种包含指令的计算机程序产品，当其在计算机上运行时，使得计算机执行上述任一方法。
本申请实施例还提供了一种通信系统，包括：上述网络设备和终端。可选的，还包括上述终端。
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来实现。该计算机程序产品包括一个或多个计算机指令。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所述的流程或功能。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。计算机指令可以存储在计算机可读存储介质中，或者从一个计算机可读存储介质向另一个计算机可读存储介质传输，例如，计算机指令可以从一个网站站点、计算机、服务器或者数据中心通过有线(例如同轴电缆、光纤、数字用户线(digital subscriber line，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。计算机可读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以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)，光介质(例如，DVD)、或者半导体介质(例如固态硬盘(solid state disk，SSD))等。
尽管在此结合各实施例对本申请进行了描述，然而，在实施所要求保护的本申请过程中，本领域技术人员通过查看附图、公开内容、以及所附权利要求书，可理解并实现公开实施例的其他变化。在权利要求中，“包括”(comprising)一词不排除其他组成部分或步骤，“一”或“一个”不排除多个的情况。单个处理器或其他单元可以实现权利要求中列举的若干项功能。相互不同的从属权利要求中记载了某些措施， 但这并不表示这些措施不能组合起来产生良好的效果。
尽管结合具体特征及其实施例对本申请进行了描述，显而易见的，在不脱离本申请的精神和范围的情况下，可对其进行各种修改和组合。相应地，本说明书和附图仅仅是所附权利要求所界定的本申请的示例性说明，且视为已覆盖本申请范围内的任意和所有修改、变化、组合或等同物。显然，本领域的技术人员可以对本申请进行各种改动和变型而不脱离本申请的精神和范围。这样，倘若本申请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 (37)

  1. 一种通信方法，其特征在于，包括：
    终端通过非按需方式从第一小区的邻区接收系统信息，所述系统信息包括所述邻区的侧行链路配置信息，所述侧行链路为所述终端和其他终端之间的直连通信链路；
    所述终端根据所述邻区的侧行链路配置信息确定所述邻区采用的频点的优先级。
  2. 根据权利要求1所述的方法，其特征在于，所述终端通过非按需方式从第一小区的邻区接收系统信息，包括：
    所述终端直接从所述邻区接收所述系统信息。
  3. 根据权利要求1或2所述的方法，其特征在于，所述邻区的侧行链路配置信息包括以下信息中的一个或多个：所述邻区是否提供侧行链路资源配置的信息；所述邻区是否仅提供锚点载波的信息；所述邻区是否提供采用第一无线接入技术的侧行链路资源配置的信息；所述邻区是否提供采用第二无线接入技术的侧行链路资源配置的信息；所述邻区对于采用所述第一无线接入技术的侧行链路是否仅提供锚点载波的信息；所述邻区对于采用所述第二无线接入技术的侧行链路是否仅提供锚点载波的信息。
  4. 一种通信方法，其特征在于，包括：
    终端从第一小区接收系统信息，所述系统信息包括所述第一小区的邻区的侧行链路配置信息，所述侧行链路为所述终端和其他终端之间的直连通信链路，所述邻区的侧行链路配置信息包括以下信息中的一个或多个：所述邻区是否提供侧行链路资源配置的信息；所述邻区是否仅提供锚点载波的信息；所述邻区是否提供采用第一无线接入技术的侧行链路资源配置的信息；所述邻区是否提供采用第二无线接入技术的侧行链路资源配置的信息；所述邻区对于采用所述第一无线接入技术的侧行链路是否仅提供锚点载波的信息；所述邻区对于采用所述第二无线接入技术的侧行链路是否仅提供锚点载波的信息；
    所述终端根据所述邻区的侧行链路配置信息确定所述邻区采用的频点的优先级。
  5. 根据权利要求4所述的方法，其特征在于，所述终端从所述第一小区接收系统信息，包括：
    所述终端通过按需方式或非按需方式从所述第一小区接收系统信息。
  6. 根据权利要求5所述的方法，其特征在于，所述终端通过按需方式从所述第一小区接收系统信息，包括：
    所述终端向所述第一小区发送请求消息，所述请求消息用于请求所述邻区的侧行链路配置信息；
    所述终端从所述第一小区接收所述系统信息。
  7. 根据权利要求5所述的方法，其特征在于，所述终端通过非按需方式从所述第一小区接收系统信息，包括：
    所述终端直接从所述第一小区接收所述系统信息。
  8. 根据权利要求4-7任一项所述的方法，其特征在于，所述第一小区通过所述第一小区所属的网络设备与所述邻区所属的网络设备之间的接口获取所述邻区的侧行链路配置信息。
  9. 根据权利要求3-8任一项所述的方法，其特征在于，所述侧行链路资源配置包括载波内侧行链路资源配置和/或载波间侧行链路资源配置。
  10. 根据权利要求9所述的方法，其特征在于，所述邻区的载波内侧行链路资源配置是指与所述邻区采用的频点相同的频点的侧行链路资源配置，或者，与所述邻区采用的载波相同的载波上的侧行链路资源配置；所述邻区的载波间侧行链路资源配置是指与所述邻区采用的频点不同的频点的侧行链路资源配置，或者，所述邻区采用的频点的邻频上的侧行链路资源配置，或者，与所述邻区采用的载波不同的载波上的侧行链路资源配置。
  11. 根据权利要求3-10任一项所述的方法，其特征在于，所述终端根据所述邻区的侧行链路配置信息确定所述邻区采用的频点的优先级，包括：
    在所述终端根据所述邻区的侧行链路配置信息确定所述邻区提供侧行链路资源配置的情况下，所述终端将所述邻区采用的频点确定为优先级最高的频点。
  12. 根据权利要求11所述的方法，其特征在于，所述终端满足以下条件中的一个或多个：所述终端具备侧行链路通信能力，所述终端被配置进行侧行链路通信，所述终端被授权进行侧行链路通信。
  13. 根据权利要求3-10任一项所述的方法，其特征在于，所述终端根据所述邻区的侧行链路配置信息确定所述邻区采用的频点的优先级，包括：
    在所述终端被配置为既采用所述第一无线接入技术进行侧行链路通信，还采用所述第二无线接入技术进行侧行链路通信的情况下，所述终端将既提供采用所述第一无线接入技术的侧行链路资源配置，还提供采用所述第二无线接入技术的侧行链路资源配置的所述邻区采用的频点确定为优先级最高的频点；或者，
    在所述终端被配置仅采用所述第一无线接入技术进行侧行链路通信的情况下，所述终端将提供采用所述第一无线接入技术的侧行链路资源配置的所述邻区采用的频点确定为优先级最高的频点；或者，
    在所述终端被配置仅采用所述第二无线接入技术进行侧行链路通信的情况下，所述终端将采用所述第二无线接入技术的侧行链路资源配置的所述邻区采用的频点确定为优先级最高的频点。
  14. 根据权利要求13所述的方法，其特征在于，在所述终端被配置为既采用所述第一无线接入技术进行侧行链路通信，还采用所述第二无线接入技术进行侧行链路通信的情况下，所述终端满足以下条件中的一个或多个：所述终端具备既采用所述第一无线接入技术进行侧行链路通信，还采用所述第二无线接入技术进行侧行链路通信的能力；所述终端被授权进行采用所述第一无线接入技术和所述第二无线接入技术的侧行链路通信；或者，
    在所述终端被配置仅采用所述第一无线接入技术进行侧行链路通信的情况下，所述终端满足以下条件中的一个或多个：所述终端具备采用所述第一无线接入技术进行侧行链路通信的能力，所述终端被授权进行采用所述第一无线接入技术的侧行链路通信；或者，
    在所述终端被配置仅采用所述第二无线接入技术进行侧行链路通信的情况下，所述终端满足以下条件中的一个或多个：所述终端具备采用所述第二无线接入技术进行侧行链路通信的能力，所述终端被授权进行采用所述第二无线接入技术的侧行链路通信。
  15. 根据权利要求3-14任一项所述的方法，其特征在于，通过1个比特指示所述邻区是否提供侧行链路资源配置，和/或，通过1个比特指示所述邻区是否仅提供锚点载波。
  16. 根据权利要求3-15任一项所述的方法，其特征在于，通过2个比特指示所述邻区是否提供采用所述第一无线接入技术和/或所述第二无线接入技术的侧行链路资源配置。
  17. 根据权利要求3-16任一项所述的方法，其特征在于，所述侧行链路资源配置包括侧行链路发送资源配置，和/或，侧行链路接收资源配置。
  18. 根据权利要求3-17任一项所述的方法，其特征在于，所述邻区不提供侧行链路资源配置表示所述邻区不通过系统信息提供侧行链路资源配置，也不通过专用信令提供侧行链路资源配置。
  19. 根据权利要求3-17任一项所述的方法，其特征在于，所述邻区不提供侧行链路资源配置表示所述邻区不通过系统信息提供侧行链路资源配置，但通过专用信令提供侧行链路资源配置。
  20. 根据权利要求1-19任一项所述的方法，其特征在于，所述邻区的侧行链路配置信息包括以下信息中的一个或多个：所述邻区提供的侧行链路无线承载配置对应的服务质量QoS配置文件索引；所述邻区是否有启用混合自动重传请求HARQ的侧行链路无线承载配置的信息；所述邻区是否有采用无线链路控制确认模式RLC AM的侧行链路无线承载配置的信息；所述邻区提供的侧行链路资源池索引；所述邻区提供的侧行链路资源池最低信道拥塞率CBR索引；所述邻区是否有同步参考源配置的信息；所述邻区提供的侧行链路资源配置；所述邻区提供的侧行链路无线承载配置；所述邻区提供的同步参考源配置。
  21. 根据权利要求20所述的方法，其特征在于，所述终端根据所述邻区的侧行链路配置信息确定所述邻区采用的频点的优先级，包括：
    当所述终端被配置了在侧行链路上传输业务时，所述终端根据所述邻区的侧行链路配置信息将所述邻区中的满足业务需求的邻区采用的频点确定为优先级最高的频点。
  22. 一种通信方法，其特征在于，应用于网络设备，所述网络设备提供第一小区的邻区，所述方法包括：
    生成系统信息，所述系统信息包括所述邻区的侧行链路配置信息，所述侧行链路为两个终端之间的直连通信链路；
    所述邻区通过非按需方式向位于所述第一小区中的终端发送系统信息，所述系统信息中的所述邻区的侧行链路配置信息用于所述终端确定所述邻区采用的频点的优先级。
  23. 根据权利要求22所述的方法，其特征在于，所述邻区通过非按需方式向位于所述第一小区中的终端发送系统信息，包括：
    所述邻区直接向所述终端发送所述系统信息。
  24. 根据权利要求22或23所述的方法，其特征在于，所述邻区的侧行链路配置信息包括以下信息中的一个或多个：所述邻区是否提供侧行链路资源配置的信息；所述邻区是否仅提供锚点载波的信息；所述邻区是否提供采用第一无线接入技术的侧行链路资源配置的信息；所述邻区是否提供采用第二无线接入技术的侧行链路资源配置的信息；所述邻区对于采用所述第一无线接入技术的侧行链路是否仅提供锚点载波的信息；所述邻区对于采用所述第二无线接入技术的侧行链路是否仅提供锚点载波的信息。
  25. 一种通信方法，其特征在于，应用于网络设备，所述网络设备提供第一小区，所述方法包括：
    生成系统信息，所述系统信息包括所述第一小区的邻区的侧行链路配置信息，所述侧行链路为两个终端之间的直连通信链路，所述邻区的侧行链路配置信息包括以下信息中的 一个或多个：所述邻区是否提供侧行链路资源配置的信息；所述邻区是否仅提供锚点载波的信息；所述邻区是否提供采用第一无线接入技术的侧行链路资源配置的信息；所述邻区是否提供采用第二无线接入技术的侧行链路资源配置的信息；所述邻区对于采用所述第一无线接入技术的侧行链路是否仅提供锚点载波的信息；所述邻区对于采用所述第二无线接入技术的侧行链路是否仅提供锚点载波的信息；
    所述第一小区向位于所述第一小区中的终端发送所述系统信息，所述系统信息中的所述邻区的侧行链路配置信息用于所述终端确定所述邻区采用的频点的优先级。
  26. 根据权利要求25所述的方法，其特征在于，所述第一小区向位于所述第一小区中的终端发送所述系统信息，包括：
    所述第一小区通过按需方式或非按需方式向所述终端发送所述系统信息。
  27. 根据权利要求26所述的方法，其特征在于，所述第一小区通过按需方式向所述终端发送所述系统信息，包括：
    所述第一小区从所述终端接收请求消息，所述请求消息用于请求所述邻区的侧行链路配置信息；
    所述第一小区根据所述请求消息向所述终端发送所述系统信息。
  28. 根据权利要求26所述的方法，其特征在于，所述第一小区通过非按需方式向所述终端发送所述系统信息，包括：
    所述第一小区直接向所述终端发送所述系统信息。
  29. 根据权利要求25-28任一项所述的方法，其特征在于，所述第一小区通过所述第一小区所属的网络设备与所述邻区所属的网络设备之间的接口获取所述邻区的侧行链路配置信息。
  30. 根据权利要求24-29任一项所述的方法，其特征在于，所述侧行链路资源配置包括载波内侧行链路资源配置和/或载波间侧行链路资源配置。
  31. 根据权利要求30所述的方法，其特征在于，所述邻区的载波内侧行链路资源配置是指与所述邻区采用的频点相同的频点的侧行链路资源配置，或者，与所述邻区采用的载波相同的载波上的侧行链路资源配置；所述邻区的载波间侧行链路资源配置是指与所述邻区采用的频点不同的频点的侧行链路资源配置，或者，所述邻区采用的频点的邻频上的侧行链路资源配置，或者，与所述邻区采用的载波不同的载波上的侧行链路资源配置。
  32. 根据权利要求24-31任一项所述的方法，其特征在于，通过1个比特指示所述邻区是否提供侧行链路资源配置，和/或，通过1个比特指示所述邻区是否仅提供锚点载波。
  33. 根据权利要求24-32任一项所述的方法，其特征在于，通过2个比特指示所述邻区是否提供采用所述第一无线接入技术和/或所述第二无线接入技术的侧行链路资源配置。
  34. 根据权利要求24-33任一项所述的方法，其特征在于，所述侧行链路资源配置包括侧行链路发送资源配置，和/或，侧行链路接收资源配置。
  35. 根据权利要求24-34任一项所述的方法，其特征在于，所述邻区不提供侧行链路资源配置表示所述邻区不通过系统信息提供侧行链路资源配置，也不通过专用信令提供侧行链路资源配置。
  36. 根据权利要求24-34任一项所述的方法，其特征在于，所述邻区不提供侧行链路资源配置表示所述邻区不通过系统信息提供侧行链路资源配置，但通过专用信令提供侧行 链路资源配置。
  37. 根据权利要求22-36任一项所述的方法，其特征在于，所述邻区的侧行链路配置信息包括以下信息中的一个或多个：所述邻区提供的侧行链路无线承载配置对应的服务质量QoS配置文件索引；所述邻区是否有启用混合自动重传请求HARQ的侧行链路无线承载配置的信息；所述邻区是否有采用无线链路控制确认模式RLC AM的侧行链路无线承载配置的信息；所述邻区提供的侧行链路资源池索引；所述邻区提供的侧行链路资源池最低信道拥塞率CBR索引；所述邻区是否有同步参考源配置的信息；所述邻区提供的侧行链路资源配置；所述邻区提供的侧行链路无线承载配置；所述邻区提供的同步参考源配置。
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