WO2020147832A1 - 接口可用性上报、指示方法和设备 - Google Patents

接口可用性上报、指示方法和设备 Download PDF

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Publication number
WO2020147832A1
WO2020147832A1 PCT/CN2020/072734 CN2020072734W WO2020147832A1 WO 2020147832 A1 WO2020147832 A1 WO 2020147832A1 CN 2020072734 W CN2020072734 W CN 2020072734W WO 2020147832 A1 WO2020147832 A1 WO 2020147832A1
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Prior art keywords
information
terminal device
availability
target interface
interface
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PCT/CN2020/072734
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English (en)
French (fr)
Inventor
梁敬
郑倩
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维沃移动通信有限公司
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 维沃移动通信有限公司 filed Critical 维沃移动通信有限公司
Priority to EP20741676.9A priority Critical patent/EP3913981A4/en
Priority to KR1020217025535A priority patent/KR102519674B1/ko
Priority to AU2020208709A priority patent/AU2020208709B2/en
Priority to JP2021541564A priority patent/JP7305771B2/ja
Priority to BR112021014069-7A priority patent/BR112021014069A2/pt
Priority to CA3126880A priority patent/CA3126880A1/en
Publication of WO2020147832A1 publication Critical patent/WO2020147832A1/zh
Priority to US17/378,213 priority patent/US20210345234A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H04W72/1215—Wireless traffic scheduling for collaboration of different radio technologies
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/16—Discovering, processing access restriction or access information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W92/00—Interfaces specially adapted for wireless communication networks
    • H04W92/04—Interfaces between hierarchically different network devices
    • H04W92/10—Interfaces between hierarchically different network devices between terminal device and access point, i.e. wireless air interface
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/11—Allocation or use of connection identifiers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02—Terminal devices
    • H04W88/06—Terminal devices adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W92/00—Interfaces specially adapted for wireless communication networks
    • H04W92/16—Interfaces between hierarchically similar devices
    • H04W92/18—Interfaces between hierarchically similar devices between terminal devices

Definitions

  • the present disclosure relates to the field of communication technology, and more specifically to a method and device for reporting and indicating interface availability.
  • a side link (Sidelink, SL), also called a side link or a side link, is used for direct communication between terminal equipment (User Equipment, UE) without network equipment.
  • SL resource selection the terminal equipment in the Long Term Evolution (LTE) system is selected in two modes.
  • the first mode (mode1) is the scheduled resource allocation (Scheduled resource allocation) mode.
  • the device allocates SL resources;
  • the second mode (mode2) is an autonomous resource selection mode, where the UE autonomously selects SL resources, and the second mode includes four types of a, b, c, and d.
  • communication mode the secondary link in LTE communicates through broadcast;
  • the interfaces between different communication subjects are different.
  • the interface for direct communication between terminal devices is the PC5 interface
  • the interface for communication between the terminal device and the network device is the universal interface between the user and the network ( User to Network interface universal (Uu) interface.
  • the terminal device determines whether to select the PC5 interface or the Uu interface for communication is determined by the upper layer of the terminal device.
  • the upper layer selects an interface, it needs to refer to the availability (availability) of different interfaces reported by the access (AS) layer of the terminal device.
  • AS access
  • the embodiments of the present disclosure provide a method and device for reporting and indicating interface availability to clarify the information to be reported and improve the effectiveness of communication.
  • an interface availability reporting method is provided, applied to a terminal device, and the method includes:
  • the access AS layer reports the availability information of the target interface of the first terminal device to the upper layer
  • the availability information includes at least one of first information, second information, third information, fourth information, and fifth information
  • the first information includes the availability of the target interface
  • the second information Includes link information applicable to the availability of the target interface
  • the third information includes time information applicable to the availability of the target interface
  • the fourth information includes a secondary link resource selection mode applicable to the availability of the target interface Information
  • the fifth information includes current secondary link resource selection mode information of the first terminal device.
  • an interface availability indication method is provided, which is applied to a network device, and the method includes:
  • a first terminal device in a third aspect, includes:
  • a reporting module configured to access the AS layer and report the availability information of the target interface of the first terminal device to the upper layer
  • the availability information includes at least one of first information, second information, third information, fourth information, and fifth information
  • the first information includes the availability of the target interface
  • the second information Includes link information applicable to the availability of the target interface
  • the third information includes time information applicable to the availability of the target interface
  • the fourth information includes a secondary link resource selection mode applicable to the availability of the target interface Information
  • the fifth information includes current secondary link resource selection mode information of the first terminal device.
  • a network device in a fourth aspect, includes:
  • the sending module is configured to send indication information used to determine the availability of the target interface of the first terminal device.
  • a terminal device in a fifth aspect, includes a memory, a processor, and a wireless communication program that is stored on the memory and can run on the processor, and the wireless communication program is executed by the processor. When executed, the steps of the method described in the first aspect are realized.
  • a network device includes a memory, a processor, and a wireless communication program stored on the memory and executable on the processor.
  • the wireless communication program is used by the processor. When executed, the steps of the method according to the second aspect are realized.
  • a computer-readable medium on which a wireless communication program is stored, and when the wireless communication program is executed by a processor, the method according to the first aspect or the second aspect is implemented step.
  • the AS layer of the first terminal device can report various availability information of the target interface of the first terminal device to the upper layer
  • the availability information reported by the AS layer to the upper layer is clear and clear, which can help the first
  • the upper layer of a terminal device better selects the communication interface, which improves the effectiveness of communication.
  • Fig. 1 is one of the schematic flowcharts of a method for reporting interface availability according to an embodiment of the present disclosure.
  • Fig. 2 is a second schematic flowchart of a method for reporting interface availability according to an embodiment of the present disclosure.
  • Fig. 3 is a schematic flowchart of a method for indicating interface availability according to an embodiment of the present disclosure.
  • FIG. 4 is one of the structural schematic diagrams of a terminal device 400 according to an embodiment of the present disclosure.
  • FIG. 5 is the second structural diagram of a terminal device 400 according to an embodiment of the present disclosure.
  • Fig. 6 is a schematic structural diagram of a network device 600 according to an embodiment of the present disclosure.
  • FIG. 7 is a schematic structural diagram of a terminal device 700 according to an embodiment of the present disclosure.
  • Fig. 8 is a schematic structural diagram of a network device 800 according to an embodiment of the present disclosure.
  • GSM Global System of Mobile
  • CDMA Code Division Multiple Access
  • WCDMA Wideband Code
  • GPRS General Packet Radio Service
  • LTE Long Term Evolution
  • FDD Frequency Division Duplex
  • TDD Time Division Duplex
  • UMTS Universal Mobile Telecommunication System
  • WiMAX Global Interoperability for Microwave Access
  • Terminal equipment also known as mobile terminal (Mobile Terminal), mobile terminal equipment, etc.
  • UE can communicate with at least one core network via a wireless access network (eg, Radio Access Network, RAN), terminal
  • a wireless access network eg, Radio Access Network, RAN
  • the device may be a mobile terminal, such as a mobile phone (or called a "cellular" phone) and a computer with a mobile terminal, for example, it may be a portable, pocket-sized, handheld, built-in computer, or in-vehicle mobile device, which is wirelessly connected Access the network to exchange language and/or data.
  • a network device is a device that is deployed in a wireless access network device to provide terminal equipment with an interface availability determination function.
  • the network device may be a base station, and the base station may be a base station (Base Transceiver Station) in GSM or CDMA.
  • BTS Base Transceiver Station
  • it can also be the base station (NodeB) in WCDMA, the evolutional Node B (eNB or e-NodeB) and 5G base station (gNB) in LTE, and the network side in the subsequent evolution communication system Equipment, however, the words do not constitute a limitation on the protection scope of the present disclosure.
  • the following describes the method for reporting the availability of an interface for a network device with reference to FIG. 1.
  • Fig. 1 shows a method for reporting interface availability according to an embodiment of the present disclosure, which is applied to a first terminal device. As shown in FIG. 1, the method may include the following steps:
  • Step 101 The access AS layer reports the availability information of the target interface of the first terminal device to the upper layer; wherein, the availability information includes first information, second information, third information, fourth information, and fifth information.
  • the first information includes the availability of the target interface
  • the second information includes link information applicable to the availability of the target interface
  • the third information includes information applicable to the availability of the target interface Time information
  • the fourth information includes secondary link resource selection mode information applicable to the availability of the target interface
  • the fifth information includes current secondary link resource selection mode information of the first terminal device.
  • the target interface may include at least one of a Uu interface and a PC5 interface, where the Uu interface is a user-to-network universal (Uu) interface, and the PC5 interface is an interface for direct communication between terminal devices.
  • Uu interface is a user-to-network universal (Uu) interface
  • PC5 interface is an interface for direct communication between terminal devices.
  • the Access (AS) layer refers to the AS layer of the first terminal device. Taking the protocol stack of the 5G system as an example, the layer below the radio resource control (Radio Resource Control, RRC) layer (including the RRC layer) is the AS layer. The layer above the RRC layer (excluding the RRC layer) is a non-access (NAS) layer, and the layer above the RRC layer is also referred to as the upper layer of the AS layer.
  • RRC Radio Resource Control
  • NAS non-access
  • the availability (availability) of the target interface includes available (availiable) or not available (not available).
  • the following uses examples to illustrate the meaning of the target interface being available or unavailable.
  • the Uu interface is available, which means that the service can be transmitted through the connection between the first terminal device and the network device, and the Uu interface is unavailable, which means that it cannot pass between the first terminal device and the network device.
  • the target interface is the PC5 interface
  • the PC5 interface is available, which means that the service can be transmitted through the connection between the first terminal device and at least one second terminal device.
  • the PC5 interface is unavailable, meaning that it cannot Service transmission is performed through the connection between the first terminal device and the at least one second terminal device.
  • the first terminal device may be the source terminal device in the secondary link service
  • the second terminal device may be any terminal device
  • the second terminal device may also be the target in the secondary link service.
  • (Destination) terminal device also called the opposite terminal device
  • the second terminal device can be either the opposite terminal device to which the first terminal device sends service data, or the opposite terminal to which the first terminal device sends control information
  • the secondary link may be any one of a unicast link and a multicast link.
  • the reported availability information includes at least one of the first information, second information, third information, fourth information, and fifth information
  • the specific content of the reported availability information includes the first information and the second information. Multiple combinations of information, third information, fourth information and fifth information.
  • the first information, the second information, the third information, the fourth information, and the fifth information will be described separately below.
  • the first information may specifically include the availability or unavailability of the target interface.
  • 1 bit can be used to indicate the first information. For example, when the target interface is a PC5 interface, 1 bit can be used to indicate that the PC5 interface is available, or 1 bit can be used to indicate that the PC5 interface is not available; when the target interface is Uu When connecting, you can use 1bit to indicate that the Uu interface is available, or use 1bit to indicate that the Uu interface is unavailable.
  • 2bits can be used to jointly indicate the first information.
  • 1bit of the 2bits can be used to indicate the availability or unavailability of the PC5 interface
  • the remaining 1bit of the 2bits can be used to indicate the availability or unavailability of the Uu interface.
  • the order of 2bits can be arbitrary, and can also be stipulated by the protocol, pre-configured or determined by the upper layer of the AS layer.
  • multiple bits can be used to indicate the availability of the interface under these multiple situations, and the order of the multiple bits can also be arbitrary, or can be determined by Protocol stipulated, pre-configured or determined by the upper layer of the AS layer.
  • the target interface is a PC5 interface
  • PC5 has both unicast and multicast conditions
  • 2bits can be used to jointly indicate the first information.
  • 1bit of these 2bits can be used to indicate that the PC5 interface is available under unicast or Unavailable, use the remaining 1bit in the 2bits to indicate the availability or unavailability of the PC5 interface in the multicast situation, and the order of the 2bits can also be arbitrary.
  • 3bits can be used to jointly indicate the first information. Specifically, the first bit of these 3bits is used to indicate unicast. If the PC5 interface is available or unavailable, use the second bit in the 3bits to indicate the availability or unavailability of the PC5 interface in the multicast situation, and use the third bit in the 3bits to indicate the availability or unavailability of the PC5 interface in the broadcast situation.
  • the order can also be arbitrary.
  • the third information may specifically include time information applicable to the availability of the target interface.
  • the time information may be defined by a timer, or may be an absolute value of time.
  • the time information is used to determine the effective time or stop effective time of the availability of the target interface.
  • the method shown in FIG. 1 may further include: determining the third information based on at least one of protocol provisions, network device configuration, and pre-configuration. That is, the value of the timer or the absolute value of the time may be defined based on at least one of protocol provisions, network device configuration, and pre-configuration.
  • the target interface is the PC5 interface
  • the availability of the PC5 interface is unavailable, and the timer value is 5s
  • the timer value is 5s
  • the timer value is 5s
  • the timer expires the Uu interface unavailability information starts to take effect or stops taking effect.
  • the fourth information may specifically include secondary link resource selection mode information applicable to the availability of the target interface.
  • the secondary link resource selection mode includes scheduled resource allocation mode (mode 1) and autonomous resource selection (autonomous resource selection) Mode (mode2), among them, mode2 is divided into 2a, 2b, 2c and 2d.
  • the first information includes that the PC5 interface is unavailable
  • the fourth information includes that the secondary link resource selection mode for which the PC5 interface is unavailable is mode2.
  • the availability information reported by the AS layer to the upper layer includes "PC5not Available+mode2" means that the PC5 interface is not available in mode2.
  • the first information includes that the Uu interface is unavailable
  • the fourth information includes that the secondary link resource selection mode for which the Uu interface is unavailable is mode1
  • the availability information reported by the AS layer to the upper layer includes " Uu not available+mode1" means that the Uu interface is not available in mode1.
  • the fifth information specifically includes current secondary link resource selection mode information of the first terminal device.
  • the current secondary link resource selection mode information of the first terminal device may include the secondary link resource selection mode currently adopted by the first terminal device, and the currently adopted secondary link resource selection mode may be mode1 or mode2 above.
  • the secondary link resource selection mode currently adopted by a terminal device is mode2, it may also be any one of 2a, 2b, 2c, and 2d.
  • the specific content of the first information, second information, third information, fourth information, and fifth information in the usability information are described separately by way of separate examples, it should be understood that When the availability information that needs to be reported is more than one of the first information, the second information, the third information, the fourth information, and the fifth information, the specific availability information that needs to be reported can be determined by a combination.
  • the embodiment of the present disclosure provides an interface availability reporting method. Since the AS layer of the first terminal device can report various availability information of the target interface of the first terminal device to the upper layer, the AS layer can report the availability of the interface to the upper layer. The information is clear and clear, which can help the upper layer of the first terminal device to better select the communication interface and improve the effectiveness of communication.
  • Step 102 Determine the availability of the target interface based on preset information; wherein the preset information includes at least one of sixth information, seventh information, eighth information, and ninth information, and the sixth information Includes the connection information between the first terminal device and the target device; the seventh information includes information from the network device for determining the availability of the target interface; the eighth information includes the first terminal device The current secondary link resource selection mode information; the ninth information includes the radio resource control RRC state of the first terminal device.
  • the following uses a number of examples to illustrate how to determine the availability of the target interface based on the preset information and what the specific content of the second information reported is corresponding to.
  • step 102 may include: between the first terminal device and at least one of the second terminal devices When the unicast connection is successfully established and/or the unicast connection is normal, it is determined that the target interface is available.
  • the interface availability reporting method shown in FIG. 1 or FIG. 2 may further include: when a first preset condition is satisfied, determining that the connection between the first terminal device and the target device is successfully established Unicast connection and/or unicast connection is normal.
  • the first preset condition includes but is not limited to at least one of the following:
  • the first terminal device receives the unicast connection establishment message sent by the second terminal device;
  • the first terminal device receives the direct communication acceptance information sent by the second terminal device;
  • the first terminal device receives the unicast connection establishment message from the second terminal device sent by the network device;
  • the first terminal device receives the direct communication acceptance information from the second terminal device sent by the network device;
  • the unicast connection between the first terminal device and the second terminal device is normal.
  • the unicast connection between the first terminal device and the second terminal device does not have secondary link failure, or there is no link switching, it is considered that the first terminal device and the The unicast connection between the second terminal devices is normal.
  • a unicast connection can be understood as a description of the unicast establishment process and results, and a normal unicast connection can be regarded as a description of an established unicast connection.
  • step 102 may include: between the first terminal device and at least one of the second terminal devices When the unicast connection is not successfully established and/or the unicast connection is abnormal, it is determined that the target interface is not available.
  • the interface availability reporting method shown in FIG. 1 or FIG. 2 may further include: when a second preset condition is satisfied, determining that the communication between the first terminal device and the target device is unsuccessful The unicast connection is established and/or the unicast connection is abnormal.
  • the second preset condition includes but is not limited to at least one of the following:
  • the first terminal device receives at least one unicast connection rejection message sent by the second terminal device;
  • the first terminal device receives a direct communication rejection message from at least one of the second terminal devices sent by the network device;
  • the first terminal device releases the unicast connection established with at least one of the second terminal devices;
  • Link failure occurs in a unicast connection between the first terminal device and at least one of the second terminal devices
  • the AS layer parameter negotiation between the first terminal device and at least one of the second terminal devices fails.
  • the unsuccessful establishment of a unicast connection can be understood as a description of the unicast establishment process and results, and an abnormal unicast connection can be regarded as a description of an established unicast connection.
  • the second information may specifically include but not limited to at least one of the following:
  • the link type of the availability of the target interface is a unicast link, and unicast link information corresponding to the availability of the target interface.
  • the unicast link information includes the link ID of the unicast link, the data bearer ID of the unicast link, the control bearer ID of the unicast link, and the information of the first terminal device At least one of an ID and an ID of the second terminal device.
  • the first information in the availability information may include the availability of the PC5 interface
  • the second information in the availability information may include the availability of the PC5 interface for unicast links
  • the link information of the available corresponding unicast link includes the link ID of the unicast link, the data bearer ID of the unicast link, the control bearer ID of the unicast link, the ID of the first terminal device and the second terminal Information such as the device ID.
  • the ID of the first terminal device or the ID of the second terminal device may include at least one of the following information: the upper layer ID of the AS layer, the layer 2 (Layer, L2) ID, the physical layer ID, and the international mobile user identification Code (International Mobile Subscriber Identification Number, IMSI), Temporary Mobile Subscriber Identity (5G-S-TMSI), source terminal device ID and destination terminal device ID, etc.
  • step 102 may include: between the first terminal device and at least one of the second terminal devices When the multicast connection is successfully established and/or the multicast connection is normal, it is determined that the target interface is available.
  • the interface availability reporting method shown in FIG. 1 or FIG. 2 may further include: when a third preset condition is satisfied, determining that the first terminal device and at least one of the second terminal devices The multicast connection is successfully established and/or the multicast connection is normal.
  • the third preset condition includes but is not limited to at least one of the following:
  • the first terminal device receives at least one multicast connection establishment message sent by the second terminal device;
  • the first terminal device receives at least one direct communication acceptance information sent by the second terminal device;
  • the multicast connection between the first terminal device and at least one of the second terminal devices is normal.
  • the multicast connection between the first terminal and at least one of the terminal devices is normal.
  • the successful establishment of a multicast connection can be understood as a description of the process and results of the multicast establishment, and a normal multicast connection can be regarded as a description of the established multicast connection.
  • step 102 may include: between the first terminal device and at least one of the second terminal devices When the multicast connection is not successfully established and/or the multicast connection is abnormal, it is determined that the target interface is available.
  • the interface availability reporting method shown in FIG. 1 or FIG. 2 may further include: when a fourth preset condition is satisfied, determining that the first terminal device and the at least one second terminal device The multicast connection is not successfully established and/or the multicast connection is abnormal.
  • the fourth preset condition includes but is not limited to at least one of the following:
  • the first terminal device receives at least one multicast connection rejection message sent by the second terminal device;
  • the first terminal device receives at least one direct communication rejection message sent by the second terminal device;
  • the first terminal device receives a direct communication rejection message from at least one of the second terminal devices sent by the network device;
  • the first terminal device releases the multicast connection established with at least one of the second terminal devices
  • the first terminal device receives at least one multicast connection release message sent by the second terminal device;
  • Link failure occurs in the multicast connection between the first terminal device and at least one of the second terminal devices
  • the multicast connection between the first terminal device and at least one of the second terminal devices is switched;
  • the AS layer parameter negotiation between the first terminal device and at least one of the second terminal devices fails.
  • the unsuccessful establishment of a multicast connection can be understood as a description of the process and results of the multicast establishment, and an abnormal multicast connection can be regarded as a description of the established multicast connection.
  • the second information may specifically include but is not limited to at least one of the following:
  • the link type of the availability of the target interface is a multicast link, and the multicast link information corresponding to the availability of the target interface.
  • the multicast link information includes the link ID of the multicast link, the data bearer ID of the multicast link, the control bearer ID of the multicast link, and the information of the first terminal device At least one of an ID and at least one ID of the second terminal device.
  • the first information in the availability information may include the availability of the PC5 interface
  • the second information in the availability information may include the availability of the PC5 interface for multicast links
  • the link information of the available corresponding multicast link includes the link ID of the multicast link, the data bearer ID of the multicast link, the control bearer ID of the multicast link, and the first terminal in the multicast link Information such as the ID of the device and the ID of the second terminal device.
  • the ID of the first terminal device or the ID of the second terminal device may include at least one of the following information: upper layer ID of the AS layer, layer 2 ID, physical layer ID, IMSI, 5G-S-TMSI, source terminal device ID and target terminal device ID, etc.
  • the first terminal device may be the source terminal device in the secondary link service
  • the second terminal device may be any terminal device
  • the second terminal device may be any terminal device.
  • the terminal device can also be the destination terminal device (also called the opposite terminal device) in the secondary link service, and the second terminal device can be either the opposite terminal device from which the first terminal device sends service data, or It may be the opposite terminal device that the first terminal device sends the control information.
  • the following uses the fifth example and the sixth example to describe how to determine the availability of the Uu interface based on the sixth information and what the specific content of the second information reported is corresponding to.
  • step 102 may include: determining that the target interface is available when the RRC connection is successfully established between the first terminal device and the network device and/or the RRC connection is normal.
  • the method shown in FIG. 1 or FIG. 2 may further include: when a fifth preset condition is satisfied, determining that the RRC connection is successfully established between the first terminal device and the network device and/or the RRC connection is normal.
  • the fifth preset condition includes but is not limited to at least one of the following:
  • the first terminal device receives the message 4 sent by the network device
  • the first terminal device receives the message B sent by the network device
  • the first terminal device receives the RRC connection establishment message sent by the network device;
  • the first terminal device receives a paging message sent by the network device.
  • message 4 is the message msg4 received in the fourth step of the 4-step random access process
  • message B is the message received in the second step of the 2-step random access process
  • paging message It may be a paging message of a radio access network (Radio Access Network, RAN), or it may be a paging message of a core network.
  • Radio Access Network RAN
  • the successful establishment of the RRC connection can be understood as the description of the RRC establishment process and results, and the normal RRC connection can be regarded as the description of the established RRC connection.
  • step 102 may include: determining that the target interface is available when the RRC connection is not successfully established between the first terminal device and the network device and/or the RRC connection is abnormal.
  • the method shown in FIG. 1 or FIG. 2 may further include: when the sixth preset condition is satisfied, determining that the RRC connection is not successfully established between the first terminal device and the network device and/or the RRC connection is abnormal .
  • the sixth preset condition includes but is not limited to at least one of the following:
  • the first terminal device receives the RRC connection rejection message sent by the network device;
  • the first terminal device receives the cell access barring information sent by the network device;
  • the first terminal device receives the RRC connection release message sent by the network device;
  • the first terminal device triggered a cell handover procedure
  • the first terminal device has a beam failure
  • the first terminal device triggers the beam failure recovery process.
  • the unsuccessful establishment of the RRC connection can be understood as a description of the RRC establishment process and results, and an abnormal RRC connection can be regarded as a description of the established RRC connection.
  • the second information may specifically include RRC status information of the first terminal device .
  • the RRC state may include a connected state (connected), an idle state (idle), or an inactive state (Inactive).
  • 1 bit can also be used to indicate the RRC status information of the first terminal device.
  • the availability information reported in step 101 includes the first information and the second information
  • the first information specifically includes that the Uu interface is unavailable
  • the second information includes that the RRC status of the first terminal device is idle State
  • the availability information includes "Uu not available+idle”
  • the availability information includes "Uu not available+idle”
  • the following uses a seventh example to describe the process of determining the availability of the Uu interface based on the seventh information from the network device.
  • the target interface is a Uu interface
  • the preset information includes the seventh information
  • the seventh information includes but is not limited to at least one of the following: first scheduling information from a network device, The first configuration information of the network device and the second configuration information from the network device.
  • the first scheduling information is used to schedule secondary link resources to the first terminal device, and the first scheduling information carries information used to determine the availability of the target interface.
  • the network device when the network device performs secondary link resource scheduling on the first terminal device in mode1 through the first scheduling information, it may add 1 bit or more bits to the first scheduling information to indicate that the Uu interface is available or unavailable.
  • the first configuration information is used to indicate the availability of the target interface.
  • the network device can use special configuration information to indicate to the first terminal device that the Uu interface is available or unavailable, which can be specifically indicated by 1 bit.
  • the second configuration information is used to configure at least one of a secondary link resource pool and a bandwidth part (Band Width Part, BWP) to the first terminal device, and the second configuration information carries the information used to determine the target Information about the availability of the interface.
  • BWP Band Width Part
  • the network device may carry information used to determine the availability of the Uu interface in the configuration information used to configure the secondary link resource pool and/or BWP to the first terminal device.
  • the first terminal device can directly determine whether the Uu interface is available or unavailable.
  • the network device may also carry information for determining the availability of the target interface through other configuration information, which is not limited in the present disclosure.
  • the following uses an eighth example to describe the process of determining the availability of the PC5 interface based on the seventh information from the network device.
  • the target interface is the PC5 interface
  • the preset information includes the seventh information
  • the seventh information includes but is not limited to at least one of the following: second scheduling information from a network device, The third configuration information of the network device, the fourth configuration information from the network device, the fifth configuration information from the network device, and the sixth configuration information from the network device.
  • the second scheduling information is used to schedule secondary link resources to the first terminal device, and the second scheduling information carries information used to determine the availability of the target interface.
  • the network device when the network device performs secondary link resource scheduling on the first terminal device in mode1 through the second scheduling information, it can add 1 bit or more bits to the second scheduling information to indicate whether the PC5 interface is available or unavailable.
  • the third configuration information is used to indicate the availability of the target interface.
  • the network device can use special configuration information to indicate to the first terminal device that the PC5 interface is available or unavailable, which can be specifically indicated by 1 bit.
  • the fourth configuration information is used to configure preset resources for the first terminal device, and the fourth configuration information carries information used to determine the availability of the target interface.
  • the network device may carry information used to determine the availability of the PC5 interface in the configuration information used to configure the secondary link resource pool and/or BWP to the first terminal device.
  • the first terminal device can directly determine whether the PC5 interface is available or unavailable.
  • the way in which the network device indicates that the PC5 interface is available or unavailable through at least one of the second scheduling information, the third configuration information, and the fourth configuration information can be regarded as an explicit indication method.
  • the network explained below The device indicates the availability or unavailability of the PC5 interface through the fifth configuration information and/or the sixth configuration information. Since the configuration information does not directly carry information for determining the availability of the PC5 interface, it can be regarded as a An implicit indication method.
  • the fifth configuration information when the fifth configuration information carries information for configuring preset resources, the fifth configuration information may be used to determine that the target interface is available; in the fifth configuration information When the information used to configure the preset resource is not carried in the file, the fifth configuration information may be used to determine that the target interface is unavailable. That is, the fifth configuration information can be used to indirectly indicate whether the PC5 interface is available or unavailable through whether the fifth configuration information carries information for configuring preset resources. Specifically, if it is carried, the fifth configuration information can be used to indicate that the PC5 interface is available. If it is not carried, the fifth configuration information can be used to indicate that the PC5 interface is unavailable.
  • the fifth configuration information when the fifth configuration information carries information for configuring preset resources, the fifth configuration information can be used to determine that the target interface is unavailable; When the fifth configuration information does not carry information for configuring the preset resource, the fifth configuration information may be used to determine that the target interface is available.
  • the sixth configuration information is used to configure preset resources for the first terminal device, and when the preset resources configured by the sixth configuration information cannot realize the communication between the first terminal device and the second terminal device, The sixth configuration information is used to determine that the target interface is unavailable, and when the preset resource configured by the sixth configuration information can realize the communication between the first terminal device and the second terminal device, the sixth configuration The information is used to determine that the target interface is available.
  • the resources configured by the resource configuration information carried in the sixth configuration information can allow the first terminal device to communicate with the second terminal device, it means that the PC5 interface is available. If the resources configured by the resource configuration information carried in the sixth configuration information cannot allow the first terminal device to communicate with the second terminal device, it means that the PC5 interface is unavailable.
  • the network device configures the first terminal device with preset resources that are different from the second terminal device through the sixth configuration information, the communication between the first terminal device and the second terminal device cannot be realized.
  • the preset resource includes at least one of a secondary link resource pool and a BWP.
  • the first terminal device may also determine that the PC5 interface is available or unavailable. Moreover, since no extra bits are added to the fifth configuration information and the sixth configuration information, communication resources can also be saved.
  • first configuration information and the second configuration information described in the seventh example, and the third configuration information to the sixth configuration information described in the eighth example may be dedicated information sent by a network device. It can also be a broadcast message sent by a network device.
  • fourth configuration information to the sixth configuration information described in the eighth example may be different configuration information or the same configuration information.
  • the following uses a ninth example to describe the process of determining the availability of the target interface based on the eighth information.
  • step 102 may include: determining the availability of the target interface based on the mapping relationship between the eighth information and the availability of the target interface.
  • the eighth information includes the current secondary link resource selection mode of the first terminal device.
  • the ninth example can be used to determine the availability of the Uu interface as well as the availability of the PC5 interface.
  • the mapping relationship between the Uu interface and the current secondary link resource selection mode of the first terminal device may be preset, so that the availability of the Uu interface is determined based on the mapping relationship. For example, if the preset mapping relationship includes "Uuavailable+mode1", this means that when the current secondary link resource selection mode of the first terminal device is mode1, the Uu interface of the first terminal device is available.
  • the mapping relationship between the PC5 interface and the current secondary link resource selection mode of the first terminal device may be preset, so as to determine the availability of the PC5 interface based on the mapping relationship. For example, if the preset mapping relationship includes "PC5available+mode2", it means that when the current secondary link resource selection mode of the first terminal device is mode2, the PC5 interface of the first terminal device is available, etc., this specification does not Illustrate one by one.
  • the following uses a tenth example to describe the process of determining the availability of the target interface based on the ninth information.
  • step 102 may include: determining the availability of the target interface based on the mapping relationship between the ninth information and the availability of the target interface.
  • the ninth information may include the RRC state of the first terminal device, where the RRC state may include a connected state (connected), an idle state (idle), or an inactive state (Inactive).
  • the tenth example can be used to determine the availability of the Uu interface, and can also be used to determine the availability of the PC5 interface.
  • the mapping relationship between the Uu interface and the RRC state of the first terminal device may be preset, so that the availability of the Uu interface is determined based on the mapping relationship.
  • the preset mapping relationship includes "Uuavailable+connected", it means that when the RRC state of the first terminal device is connected, the Uu interface of the first terminal device is available; or, if the preset mapping relationship includes " Uu available+idle/Inactive” means that when the RRC state of the first terminal device is idle or inactive, the Uu interface of the first terminal device is available; or, if the preset mapping relationship includes "Uu available+idle/ Inactive+suitable cell” indicates that when the RRC state of the first terminal device is idle or inactive and resides in a suitable cell, the Uu interface of the first terminal device is available, and so on.
  • the preset mapping relationship includes "Uu not available+idle/Inactive”, it means that when the RRC state of the first terminal device is idle or inactive, the Uu interface of the first terminal device is not available; or, If the preset mapping relationship includes "Uu not available+idle/Inactive+acceptable cell", it means that when the RRC state of the first terminal device is idle or inactive, and it resides in an acceptable cell, the first terminal The Uu interface of the device is unavailable, etc.
  • the mapping relationship between the PC5 interface and the RRC state of the first terminal device may be preset, so that the availability of the PC5 interface is determined based on the mapping relationship. For example, if the preset mapping relationship includes "PC5 not available+idle", this means that when the RRC state of the first terminal device is idle, the PC5 interface of the first terminal device is not available, and so on.
  • the availability of the target interface is determined based on multiple information in the sixth information, seventh information, eighth information, and ninth information.
  • the embodiment shown in FIG. 2 provides a method for reporting the availability of an interface, since not only detailed availability information can be reported, but also a specific method for determining the availability of the target interface is provided, so the problem of how to determine the availability of the target interface can be solved.
  • an interface availability reporting method provided by the present disclosure may further include: reporting to the upper layer that the first terminal device uses broadcast The availability of the target interface when communicating in a way.
  • the availability information reported by the AS layer of the first terminal device to the upper layer may be any combination of the first information, the second information, the third information, the fourth information, and the fifth information.
  • the target interface includes the PC5 interface and the Uu interface
  • it can use 2bits to jointly indicate the first information, specifically, 1bit of the 2bits can be used. Indicate whether the PC5 interface is available or unavailable, and use the remaining 1 bit of the 2bits to indicate the availability or unavailability of the Uu interface.
  • the order of the 2bits can be arbitrary, or can be specified by the protocol, pre-configured or determined by the upper layer of the AS layer.
  • multiple bits can be used to indicate the availability of the interface in these multiple situations, and the order of the multiple bits can also be It is arbitrary, or can be specified by the protocol, pre-configured, or determined by the upper layer of the AS layer. For example, if the target interface is a PC5 interface, and PC5 has both unicast and multicast conditions, then 2bits can be used to jointly indicate the first information.
  • 1bit of these 2bits can be used to indicate that the PC5 interface is available under unicast or Unavailable, use the remaining 1bit in the 2bits to indicate the availability or unavailability of the PC5 interface in the multicast situation, and the order of the 2bits can also be arbitrary.
  • the target interface is the PC5 interface
  • PC5 has three conditions of unicast, multicast and broadcast
  • 3bits can be used to jointly indicate the first information.
  • the first bit of these 3bits is used to indicate unicast.
  • the PC5 interface is available or unavailable, use the second bit in the 3bits to indicate the availability or unavailability of the PC5 interface in the multicast situation, and use the third bit in the 3bits to indicate the availability or unavailability of the PC5 interface in the broadcast situation.
  • the order can also be arbitrary.
  • the above description corresponds to the interface availability reporting method for the first terminal device, and the following description will be made with reference to FIG. 3 corresponding to the interface availability indication method for the network device.
  • an embodiment of the present disclosure also provides an interface availability indication method, which is applied to a network device, and the method includes:
  • Step 301 Send indication information for determining the availability of the target interface of the first terminal device.
  • the target interface includes at least one of a Uu interface and a PC5 interface.
  • the availability of the target interface includes available or unavailable.
  • the indication information includes but is not limited to at least one of first scheduling information, first configuration information, and second configuration information.
  • the first scheduling information is used to schedule secondary link resources to the first terminal device, and the first scheduling information carries information used to determine the availability of the target interface.
  • the first configuration information is used to indicate the availability of the target interface.
  • the second configuration information is used to configure at least one of a secondary link resource pool and a bandwidth part BWP to the first terminal device, and the second configuration information carries information used to determine the availability of the target interface.
  • the first terminal device can directly determine whether the Uu interface is available or unavailable.
  • the indication information includes at least one of second scheduling information, third configuration information, fourth configuration information, fifth configuration information, and sixth configuration information.
  • the second scheduling information is used to schedule secondary link resources to the first terminal device, and the second scheduling information carries information used to determine the availability of the target interface.
  • the third configuration information is used to indicate the availability of the target interface.
  • the fourth configuration information is used to configure preset resources for the first terminal device, and the fourth configuration information carries information used to determine the availability of the target interface.
  • the first terminal device can directly determine whether the PC5 interface is available or unavailable.
  • the way in which the network device indicates that the PC5 interface is available or unavailable through at least one of the second scheduling information, the third configuration information, and the fourth configuration information can be regarded as an explicit indication method.
  • the network explained below The device indicates the availability or unavailability of the PC5 interface through the fifth configuration information and/or the sixth configuration information. Since the configuration information does not directly carry information for determining the availability of the PC5 interface, it can be regarded as a An implicit indication method.
  • the fifth configuration information when the fifth configuration information carries information for configuring preset resources, the fifth configuration information may be used to determine that the target interface is available, and there is no information in the fifth configuration information. When carrying information for configuring preset resources, the fifth configuration information may be used to determine that the target interface is unavailable.
  • the fifth configuration information when the fifth configuration information carries information for configuring preset resources, the fifth configuration information can be used to determine that the target interface is unavailable; When the fifth configuration information does not carry information for configuring the preset resource, the fifth configuration information may be used to determine that the target interface is available.
  • the sixth configuration information is used to configure preset resources for the first terminal device, and when the preset resources configured by the sixth configuration information cannot realize the communication between the first terminal device and the second terminal device, The sixth configuration information is used to determine that the target interface is unavailable, and when the preset resource configured by the sixth configuration information can realize the communication between the first terminal device and the second terminal device, the sixth configuration The information is used to determine that the target interface is available.
  • the resources configured by the resource configuration information carried in the sixth configuration information can allow the first terminal device to communicate with the second terminal device, it means that the PC5 interface is available. If the resources configured by the resource configuration information carried in the sixth configuration information cannot allow the first terminal device to communicate with the second terminal device, it means that the PC5 interface is unavailable.
  • the network device configures the first terminal device with preset resources that are different from the second terminal device through the sixth configuration information, the communication between the first terminal device and the second terminal device cannot be realized.
  • the preset resource includes at least one of a secondary link resource pool and a BWP.
  • the first terminal device may also determine that the PC5 interface is available or unavailable. Moreover, since no extra bits are added to the fifth configuration information and the sixth configuration information, communication resources can also be saved.
  • first configuration information to sixth configuration information may be dedicated signaling sent by a network device, or a broadcast message sent by a network device.
  • fourth configuration information to the sixth configuration information may be the same configuration information or different configuration information.
  • the embodiment shown in FIG. 3 provides a method for indicating the availability of an interface. Since the first terminal device can send indication information for determining the availability of the target interface of the first terminal device, the first terminal device can determine Whether the target interface is available or not, solves the problem of how to determine the availability of the target interface.
  • FIG. 4 shows a schematic structural diagram of a first terminal device provided by an embodiment of the present disclosure.
  • the first terminal device 400 includes a reporting module 401.
  • the reporting module 401 is configured to access the AS layer and report the availability information of the target interface of the first terminal device to the upper layer.
  • the availability information includes at least one of first information, second information, third information, fourth information, and fifth information
  • the first information includes the availability of the target interface
  • the second information Includes link information applicable to the availability of the target interface
  • the third information includes time information applicable to the availability of the target interface
  • the fourth information includes a secondary link resource selection mode applicable to the availability of the target interface Information
  • the fifth information includes current secondary link resource selection mode information of the first terminal device.
  • the target interface may include at least one of a Uu interface and a PC5 interface.
  • the availability (availability) of the target interface includes available (availiable) or unavailable (not available).
  • the first terminal device may be the source terminal device in the secondary link service
  • the second terminal device may be any terminal device
  • the second terminal device may also be the destination terminal device in the secondary link service ( It can also be called the opposite terminal device)
  • the second terminal device can be either the opposite terminal device through which the first terminal device sends service data, or the opposite terminal device through which the first terminal device sends control information, as described below
  • the meaning of the second terminal device is similar.
  • the reported availability information includes at least one of the first information, the second information, the third information, the fourth information, and the fifth information
  • the specific content of the reported availability information includes the first information and the second information. Multiple combinations of information, third information, fourth information and fifth information. The first information, the second information, the third information, the fourth information, and the fifth information will be described separately below.
  • the first information may specifically include the availability or unavailability of the target interface.
  • the third information may specifically include time information applicable to the availability of the target interface.
  • the time information may be defined by a timer, or may be an absolute value of time.
  • the time information is used to determine the effective time or stop effective time of the availability of the target interface.
  • the first terminal device 400 shown in FIG. 4 may further include: a third information determining module, configured to be based on at least one of protocol provisions, network device configuration, and pre-configuration One is to determine the third information.
  • a third information determining module configured to be based on at least one of protocol provisions, network device configuration, and pre-configuration One is to determine the third information.
  • the fourth information may specifically include secondary link resource selection mode information applicable to the availability of the target interface.
  • the secondary link resource selection mode includes scheduled resource allocation mode (mode 1) and autonomous resource selection (autonomous resource selection) Mode (mode2), among them, mode2 is divided into 2a, 2b, 2c and 2d.
  • the fifth information specifically includes current secondary link resource selection mode information of the first terminal device.
  • the current secondary link resource selection mode information of the first terminal device may include the secondary link resource selection mode currently adopted by the first terminal device, and the currently adopted secondary link resource selection mode may be mode1 or mode2 above.
  • the secondary link resource selection mode currently adopted by a terminal device is mode2, it may also be any one of 2a, 2b, 2c, and 2d.
  • the specific content of the first information, second information, third information, fourth information, and fifth information in the usability information are described separately by way of separate examples, it should be understood that When the availability information that needs to be reported is more than one of the first information, the second information, the third information, the fourth information, and the fifth information, the specific availability information that needs to be reported can be determined by a combination.
  • the AS layer of the first terminal device can report various availability information of the target interface of the first terminal device to the upper layer
  • the AS layer reports the availability information of the interface to the upper layer Clear and clear, which can help the upper layer of the first terminal device to better select the communication interface and improve the effectiveness of communication.
  • the first terminal device 400 provided by the embodiment of the present disclosure may further include: an availability determining module 402.
  • the availability determining module 402 is configured to determine the availability of the target interface based on preset information; wherein the preset information includes at least one of sixth information, seventh information, eighth information, and ninth information, so The sixth information includes connection information between the first terminal device and the target device; the seventh information includes information from a network device for determining the availability of the target interface; the eighth information includes the The current secondary link resource selection mode information of the first terminal device; the ninth information includes the radio resource control RRC state of the first terminal device.
  • the availability determination module 402 determines the availability of the target interface based on preset information, and what the specific content of the second information reported by the reporting module 401 corresponds to.
  • the availability determining module 402 may be used to determine the target interface when a unicast connection is successfully established between the first terminal device and at least one of the second terminal devices and/or the unicast connection is normal Available.
  • the first terminal device shown in FIG. 4 or FIG. 5 may further include: a first determining module, configured to determine the relationship between the first terminal device and the first terminal device when the first preset condition is satisfied.
  • the unicast connection is successfully established between the target devices and/or the unicast connection is normal.
  • the first preset condition includes but is not limited to at least one of the following:
  • the first terminal device receives the unicast connection establishment message sent by the second terminal device;
  • the first terminal device receives the direct communication acceptance information sent by the second terminal device;
  • the first terminal device receives the unicast connection establishment message from the second terminal device sent by the network device;
  • the first terminal device receives the direct communication acceptance information from the second terminal device sent by the network device;
  • the unicast connection between the first terminal device and the second terminal device is normal.
  • the unicast connection between the first terminal device and the second terminal device does not have secondary link failure, or there is no link switching, it is considered that the first terminal device and the The unicast connection between the second terminal devices is normal.
  • the availability determination module 402 can be used to determine the target when a unicast connection is not successfully established between the first terminal device and at least one of the second terminal devices and/or the unicast connection is abnormal The interface is not available.
  • the first terminal device shown in FIG. 4 or FIG. 5 may further include: a second determining module, configured to determine the relationship between the first terminal device and the first terminal device when the second preset condition is satisfied.
  • the unicast connection is not successfully established between the target devices and/or the unicast connection is abnormal.
  • the second preset condition includes but is not limited to at least one of the following:
  • the first terminal device receives at least one unicast connection rejection message sent by the second terminal device;
  • the first terminal device receives at least one direct communication rejection message sent by the second terminal device;
  • the first terminal device receives a direct communication rejection message from at least one of the second terminal devices sent by the network device;
  • the first terminal device releases the unicast connection established with at least one of the second terminal devices;
  • the first terminal device receives at least one unicast connection release message sent by the second terminal device;
  • Link failure occurs in a unicast connection between the first terminal device and at least one of the second terminal devices
  • the unicast connection between the first terminal device and at least one of the second terminal devices is switched;
  • the AS layer parameter negotiation between the first terminal device and at least one of the second terminal devices fails.
  • the second information may include but is not limited to at least one of the following: applicable
  • the link type of the availability of the target interface is a unicast link, and unicast link information corresponding to the availability of the target interface.
  • the unicast link information includes the link ID of the unicast link, the data bearer ID of the unicast link, the control bearer ID of the unicast link, and the information of the first terminal device At least one of an ID and an ID of the second terminal device.
  • the first information in the availability information may include the availability of the PC5 interface
  • the second information in the availability information may include the availability of the PC5 interface for unicast links
  • the link information of the available corresponding unicast link includes the link ID of the unicast link, the data bearer ID of the unicast link, the control bearer ID of the unicast link, the ID of the first terminal device and the second terminal Information such as the device ID.
  • the target interface is a PC5 interface
  • the preset information includes the sixth information
  • the target device includes at least one second terminal device
  • the connection between the first terminal device and the target device If the information is multicast connection information, the availability determining module 402 can be used to determine the target interface when the first terminal device successfully establishes a multicast connection with at least one of the second terminal devices and/or the multicast connection is normal Available.
  • the first terminal device shown in FIG. 4 or FIG. 5 may further include: a third determining module, configured to determine that the first terminal device is at least One of the second terminal devices successfully establishes a multicast connection and/or the multicast connection is normal.
  • a third determining module configured to determine that the first terminal device is at least One of the second terminal devices successfully establishes a multicast connection and/or the multicast connection is normal.
  • the third preset condition includes but is not limited to at least one of the following:
  • the first terminal device receives at least one multicast connection establishment message sent by the second terminal device;
  • the first terminal device receives at least one direct communication acceptance information sent by the second terminal device;
  • the multicast connection between the first terminal device and at least one of the second terminal devices is normal.
  • the multicast connection between the first terminal and at least one of the terminal devices is normal.
  • the target interface is a PC5 interface
  • the preset information includes the sixth information
  • the target device includes at least one second terminal device
  • the connection between the first terminal device and the target device If the information is multicast connection information, the availability determination module 402 may be used to determine the target when the first terminal device and at least one of the second terminal devices fail to establish a multicast connection and/or the multicast connection is abnormal. The interface is available.
  • the first terminal device shown in FIG. 4 or FIG. 5 may further include: a fourth determining module, configured to determine that the first terminal device is at least One of the second terminal devices fails to establish a multicast connection and/or the multicast connection is abnormal.
  • the fourth preset condition includes but is not limited to at least one of the following:
  • the first terminal device receives at least one multicast connection rejection message sent by the second terminal device;
  • the first terminal device receives at least one direct communication rejection message sent by the second terminal device;
  • the first terminal device receives a direct communication rejection message from at least one of the second terminal devices sent by the network device;
  • the first terminal device releases the multicast connection established with at least one of the second terminal devices
  • the first terminal device receives at least one multicast connection release message sent by the second terminal device;
  • Link failure occurs in the multicast connection between the first terminal device and at least one of the second terminal devices
  • the multicast connection between the first terminal device and at least one of the second terminal devices is switched;
  • the AS layer parameter negotiation between the first terminal device and at least one of the second terminal devices fails.
  • the second information may include but is not limited to at least one of the following: applicable
  • the link type of the availability of the target interface is a multicast link, and the multicast link information corresponding to the availability of the target interface.
  • the multicast link information includes the link ID of the multicast link, the data bearer ID of the multicast link, the control bearer ID of the multicast link, and the information of the first terminal device At least one of an ID and at least one ID of the second terminal device.
  • the fifth example and the sixth example are used to describe how the availability determination module 402 determines the availability of the Uu interface based on the sixth information, and what the specific content of the second information reported is corresponding to.
  • the availability determining module 402 may be used to determine that the target interface is available when the RRC connection is successfully established between the first terminal device and the network device and/or the RRC connection is normal.
  • the first terminal device 400 shown in FIG. 4 or FIG. 5 may further include: a fifth determining module, configured to determine the relationship between the first terminal device and the network device when the fifth preset condition is satisfied The RRC connection is successfully established and/or the RRC connection is normal.
  • a fifth determining module configured to determine the relationship between the first terminal device and the network device when the fifth preset condition is satisfied The RRC connection is successfully established and/or the RRC connection is normal.
  • the fifth preset condition includes but is not limited to at least one of the following:
  • the first terminal device receives the message 4 sent by the network device
  • the first terminal device receives the message B sent by the network device
  • the first terminal device receives the RRC connection establishment message sent by the network device;
  • the first terminal device receives a paging message sent by the network device.
  • the availability determining module 402 may be used to determine that the target interface is available when the RRC connection is not successfully established between the first terminal device and the network device and/or the RRC connection is abnormal.
  • the first terminal device 400 shown in FIG. 4 or FIG. 5 may further include: a sixth determining module, configured to determine the relationship between the first terminal device and the network device when the fifth preset condition is satisfied The RRC connection is not successfully established and/or the RRC connection is abnormal.
  • the sixth preset condition includes but is not limited to at least one of the following:
  • the first terminal device receives the RRC connection rejection message sent by the network device;
  • the first terminal device receives the cell access barring information sent by the network device;
  • the first terminal device receives the RRC connection release message sent by the network device;
  • the first terminal device triggered a cell handover procedure
  • the first terminal device has a beam failure
  • the first terminal device triggers the beam failure recovery process.
  • the second information may specifically include the RRC status of the first terminal device information.
  • the RRC state may include a connected state (connected), an idle state (idle), or an inactive state (Inactive).
  • 1 bit can also be used to indicate the RRC status information of the first terminal device.
  • the following uses a seventh example to describe the process in which the availability determining module 402 determines the availability of the Uu interface based on the seventh information from the network device.
  • the target interface is a Uu interface
  • the preset information includes the seventh information
  • the seventh information includes but is not limited to at least one of the following: first scheduling information from a network device, The first configuration information of the network device and the second configuration information from the network device.
  • the first scheduling information is used to schedule secondary link resources to the first terminal device, and the first scheduling information carries information used to determine the availability of the target interface.
  • the first configuration information is used to indicate the availability of the target interface.
  • the second configuration information is used to configure at least one of a secondary link resource pool and a bandwidth part (Band Width Part, BWP) to the first terminal device, and the second configuration information carries the information used to determine the target Information about the availability of the interface.
  • BWP Band Width Part
  • the first terminal device can directly determine whether the Uu interface is available or unavailable.
  • the network device may also carry information for determining the availability of the target interface through other configuration information, which is not limited in the present disclosure.
  • the following uses an eighth example to describe the process in which the availability determining module 402 determines the availability of the PC5 interface based on the seventh information from the network device.
  • the target interface is the PC5 interface
  • the preset information includes the seventh information
  • the seventh information includes but is not limited to at least one of the following: second scheduling information from a network device, The third configuration information of the network device, the fourth configuration information from the network device, the fifth configuration information from the network device, and the sixth configuration information from the network device.
  • the second scheduling information is used to schedule secondary link resources to the first terminal device, and the second scheduling information carries information used to determine the availability of the target interface.
  • the third configuration information is used to indicate the availability of the target interface.
  • the fourth configuration information is used to configure preset resources for the first terminal device, and the fourth configuration information carries information used to determine the availability of the target interface.
  • the first terminal device can directly determine whether the PC5 interface is available or unavailable.
  • the way in which the network device indicates that the PC5 interface is available or unavailable through at least one of the second scheduling information, the third configuration information, and the fourth configuration information can be regarded as an explicit indication method.
  • the network explained below The device indicates the availability or unavailability of the PC5 interface through the fifth configuration information and/or the sixth configuration information. Since the configuration information does not directly carry information for determining the availability of the PC5 interface, it can be regarded as a An implicit indication method.
  • the fifth configuration information when the fifth configuration information carries information for configuring preset resources, the fifth configuration information may be used to determine that the target interface is available; in the fifth configuration information When the information used to configure the preset resource is not carried in the file, the fifth configuration information may be used to determine that the target interface is unavailable. That is, the fifth configuration information can be used to indirectly indicate whether the PC5 interface is available or unavailable through whether the fifth configuration information carries information for configuring preset resources. Specifically, if it is carried, the fifth configuration information can be used to indicate that the PC5 interface is available. If it is not carried, the fifth configuration information can be used to indicate that the PC5 interface is unavailable.
  • the fifth configuration information when the fifth configuration information carries information for configuring preset resources, the fifth configuration information can be used to determine that the target interface is unavailable; When the fifth configuration information does not carry information for configuring the preset resource, the fifth configuration information may be used to determine that the target interface is available.
  • the sixth configuration information is used to configure preset resources for the first terminal device, and when the preset resources configured by the sixth configuration information cannot realize the communication between the first terminal device and the second terminal device, The sixth configuration information is used to determine that the target interface is unavailable, and when the preset resource configured by the sixth configuration information can realize the communication between the first terminal device and the second terminal device, the sixth configuration The information is used to determine that the target interface is available.
  • the resources configured by the resource configuration information carried in the sixth configuration information can allow the first terminal device to communicate with the second terminal device, it means that the PC5 interface is available. If the resources configured by the resource configuration information carried in the sixth configuration information cannot allow the first terminal device to communicate with the second terminal device, it means that the PC5 interface is unavailable.
  • the network device configures the first terminal device with preset resources that are different from the second terminal device through the sixth configuration information, the communication between the first terminal device and the second terminal device cannot be realized.
  • the preset resource includes at least one of a secondary link resource pool and a BWP.
  • the first terminal device may also determine that the PC5 interface is available or unavailable. Moreover, since no extra bits are added to the fifth configuration information and the sixth configuration information, communication resources can also be saved.
  • first configuration information and the second configuration information described in the seventh example, and the third configuration information to the sixth configuration information described in the eighth example may be dedicated information sent by a network device. It can also be a broadcast message sent by a network device.
  • fourth configuration information to the sixth configuration information described in the eighth example may be different configuration information or the same configuration information.
  • the following uses a ninth example to describe the process in which the availability determining module 402 determines the availability of the target interface based on the eighth information.
  • the availability determining module 402 may be configured to determine the availability of the target interface based on the mapping relationship between the eighth information and the availability of the target interface .
  • the eighth information includes the current secondary link resource selection mode of the first terminal device.
  • the ninth example can be used to determine the availability of the Uu interface as well as the availability of the PC5 interface.
  • the following uses a tenth example to describe the process of the availability determining module 402 determining the availability of the target interface based on the ninth information.
  • the availability determining module 402 may be configured to determine the availability of the target interface based on the mapping relationship between the ninth information and the availability of the target interface .
  • the ninth information may include the RRC state of the first terminal device, where the RRC state may include a connected state (connected), an idle state (idle), or an inactive state (Inactive).
  • the tenth example can be used to determine the availability of the Uu interface, and can also be used to determine the availability of the PC5 interface.
  • mapping relationships between the availability of the target interface and the RRC state of the first terminal device which are not described here as examples.
  • the availability of the target interface is determined based on multiple information in the sixth information, seventh information, eighth information, and ninth information.
  • the first terminal device provided by the embodiment shown in FIG. 5 can not only report detailed availability information, but also provides a specific method for determining the availability of the target interface, so it can solve the problem of how to determine the availability of the target interface.
  • an interface availability reporting method provided in the present disclosure may further include: reporting to the upper layer that the first terminal device adopts a broadcast mode The availability of the target interface during communication.
  • the availability information reported by the AS layer of the first terminal device to the upper layer may be any combination of the first information, the second information, the third information, the fourth information, and the fifth information.
  • the first terminal device 400 shown in FIG. 4 to FIG. 5 may be used to implement the various embodiments of the interface availability reporting method shown in FIG. 1 to FIG. 2. For related details, please refer to the method embodiment described above.
  • an embodiment of the present disclosure also provides a network device 600, and the network device 600 may include a sending module 601.
  • the sending module 601 is configured to send indication information used to determine the availability of the target interface of the first terminal device.
  • the target interface includes at least one of a Uu interface and a PC5 interface.
  • the availability of the target interface includes available or unavailable.
  • the indication information includes but is not limited to at least one of first scheduling information, first configuration information, and second configuration information.
  • the first scheduling information is used to schedule secondary link resources to the first terminal device, and the first scheduling information carries information used to determine the availability of the target interface.
  • the first configuration information is used to indicate the availability of the target interface.
  • the second configuration information is used to configure at least one of a secondary link resource pool and a bandwidth part BWP to the first terminal device, and the second configuration information carries information used to determine the availability of the target interface.
  • the first terminal device can directly determine whether the Uu interface is available or unavailable.
  • the indication information may include at least one of second scheduling information, third configuration information, fourth configuration information, fifth configuration information, and sixth configuration information.
  • the target interface is a PC5 interface
  • the indication information may include at least one of second scheduling information, third configuration information, fourth configuration information, fifth configuration information, and sixth configuration information.
  • the second scheduling information is used to schedule secondary link resources to the first terminal device, and the second scheduling information carries information used to determine the availability of the target interface.
  • the third configuration information is used to indicate the availability of the target interface.
  • the fourth configuration information is used to configure preset resources for the first terminal device, and the fourth configuration information carries information used to determine the availability of the target interface.
  • the first terminal device can directly determine whether the PC5 interface is available or unavailable.
  • the way in which the network device indicates that the PC5 interface is available or unavailable through at least one of the second scheduling information, the third configuration information, and the fourth configuration information can be regarded as an explicit indication method.
  • the network explained below The device indicates the availability or unavailability of the PC5 interface through the fifth configuration information and/or the sixth configuration information. Since the configuration information does not directly carry information for determining the availability of the PC5 interface, it can be regarded as a An implicit indication method.
  • the fifth configuration information when the fifth configuration information carries information for configuring preset resources, the fifth configuration information may be used to determine that the target interface is available, and there is no information in the fifth configuration information. When carrying information for configuring preset resources, the fifth configuration information may be used to determine that the target interface is unavailable.
  • the fifth configuration information when the fifth configuration information carries information for configuring preset resources, the fifth configuration information can be used to determine that the target interface is unavailable; When the fifth configuration information does not carry information for configuring the preset resource, the fifth configuration information may be used to determine that the target interface is available.
  • the sixth configuration information is used to configure preset resources for the first terminal device, and when the preset resources configured by the sixth configuration information cannot realize the communication between the first terminal device and the second terminal device, The sixth configuration information is used to determine that the target interface is unavailable, and when the preset resource configured by the sixth configuration information can realize the communication between the first terminal device and the second terminal device, the sixth configuration The information is used to determine that the target interface is available.
  • the resources configured by the resource configuration information carried in the sixth configuration information can allow the first terminal device to communicate with the second terminal device, it means that the PC5 interface is available. If the resources configured by the resource configuration information carried in the sixth configuration information cannot allow the first terminal device to communicate with the second terminal device, it means that the PC5 interface is unavailable.
  • the network device configures the first terminal device with preset resources that are different from the second terminal device through the sixth configuration information, the communication between the first terminal device and the second terminal device cannot be realized.
  • the preset resource includes at least one of a secondary link resource pool and a BWP.
  • the first terminal device may also determine that the PC5 interface is available or unavailable. Moreover, since no extra bits are added to the fifth configuration information and the sixth configuration information, communication resources can also be saved.
  • first configuration information to sixth configuration information may be dedicated signaling sent by a network device, or a broadcast message sent by a network device.
  • fourth configuration information to the sixth configuration information may be the same configuration information or different configuration information.
  • the network device 600 provided by the embodiment shown in FIG. 6 can send the indication information for determining the availability of the target interface of the first terminal device to the first terminal device, so that the first terminal device can determine the target interface accordingly. Whether it is available, it solves the problem of how to determine the availability of the target interface.
  • the network device 600 shown in FIG. 6 may be used to implement the various embodiments of the interface availability indication method shown in FIG. 3, and please refer to the foregoing method embodiments for related details.
  • the terminal device 700 shown in FIG. 7 includes: at least one processor 701, a memory 702, at least one network interface 704, and a user interface 703.
  • the various components in the terminal device 700 are coupled together through the bus system 705.
  • the bus system 705 is used to implement connection and communication between these components.
  • the bus system 705 also includes a power bus, a control bus, and a status signal bus.
  • various buses are marked as the bus system 705 in FIG. 7.
  • the user interface 703 may include a display, a keyboard, a pointing device (for example, a mouse, a trackball), a touch panel or a touch screen, etc.
  • the memory 702 in the embodiment of the present disclosure may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory can be read-only memory (Read-OnlyMemory, ROM), programmable read-only memory (ProgrammableROM, PROM), erasable programmable read-only memory (ErasablePROM, EPROM), electrically erasable Programming read-only memory (Electrically EPROM, EEPROM) or flash memory.
  • the volatile memory may be a random access memory (Random Access Memory, RAM), which is used as an external cache.
  • RAM random access memory
  • SRAM static random access memory
  • DRAM dynamic random access memory
  • DRAM synchronous dynamic random access memory
  • SDRAM Double data rate synchronous dynamic random access memory
  • DoubleDataRate SDRAM DDRSDRAM
  • enhanced SDRAM ESDRAM
  • Synch Link DRAM SLDRAM
  • DirectRambusRAM Direct memory bus Random access memory
  • the memory 702 stores the following elements, executable modules or data structures, or their subsets, or their extended sets: operating system 7021 and application programs 7022.
  • the operating system 7021 includes various system programs, such as a framework layer, a core library layer, and a driver layer, etc., for implementing various basic services and processing hardware-based tasks.
  • the application program 7022 includes various application programs, such as a media player (MediaPlayer), a browser (Browser), etc., for implementing various application services.
  • a program for implementing the method of the embodiments of the present disclosure may be included in the application program 7022.
  • the terminal device 700 further includes: a computer program stored in the memory 702 and capable of running on the processor 701.
  • a computer program stored in the memory 702 and capable of running on the processor 701.
  • the methods disclosed in the foregoing embodiments of the present disclosure may be applied to the processor 701 or implemented by the processor 701.
  • the processor 701 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method may be completed by an integrated logic circuit of hardware in the processor 701 or an instruction in the form of software.
  • the aforementioned processor 701 may be a general-purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), a ready-made programmable gate array (Field Programmable Gate Array, FPGA) or other programmable logic devices, discrete gates or Transistor logic devices, discrete hardware components.
  • DSP Digital Signal Processor
  • ASIC Application Specific Integrated Circuit
  • FPGA Field Programmable Gate Array
  • the methods, steps, and logical block diagrams disclosed in the embodiments of the present disclosure can be implemented or executed.
  • the general-purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
  • the steps of the method disclosed in combination with the embodiments of the present disclosure may be directly embodied as being executed and completed by a hardware decoding processor, or executed and completed by a combination of hardware and software modules in the decoding processor.
  • the software module may be located in a computer-readable storage medium that is mature in the art, such as random access memory, flash memory, read-only memory, programmable read-only memory, or electrically erasable programmable memory, and registers.
  • the computer-readable storage medium is located in the memory 702, and the processor 701 reads the information in the memory 702 and completes the steps of the above method in combination with its hardware.
  • a computer program is stored on the computer-readable storage medium, and when the computer program is executed by the processor 701, the steps of the above-mentioned interface availability reporting method embodiment are implemented.
  • FIG. 8 is a structural diagram of a network device applied in an embodiment of the present disclosure, which can implement the details of the above interface availability indication method and achieve the same effect.
  • the network device 800 includes: a processor 801, a transceiver 802, a memory 803, a user interface 804, and a bus interface, where:
  • the network device 800 further includes: a computer program stored in the memory 803 and capable of running on the processor 801.
  • the computer program is executed by the processor 801 to implement the various processes of the interface availability indication method, and To achieve the same technical effect, in order to avoid repetition, I will not repeat them here.
  • the bus architecture may include any number of interconnected buses and bridges. Specifically, at least one processor represented by the processor 801 and various circuits of the memory represented by the memory 803 are linked together. The bus architecture can also link various other circuits such as peripheral devices, voltage regulators, and power management circuits, etc., which are well known in the art, and therefore, they will not be further described in this article.
  • the bus interface provides an interface.
  • the transceiver 802 may be a plurality of elements, including a transmitter and a receiver, and provides a unit for communicating with various other devices on a transmission medium.
  • the user interface 804 may also be an interface that can be externally connected to a required device.
  • the connected devices include, but are not limited to, a keypad, a display, a speaker, a microphone, and a joystick.
  • the processor 801 is responsible for managing the bus architecture and general processing, and the memory 803 can store data used by the processor 801 when performing operations.
  • the embodiments described in the embodiments of the present disclosure may be implemented by hardware, software, firmware, middleware, microcode, or a combination thereof.
  • the processing unit can be implemented in at least one application specific integrated circuit (Application Specific Integrated Circuits, ASIC), digital signal processor (Digital Signal Processing, DSP), digital signal processing device (DSP Device, DSPD), programmable logic device (Programmable Logic Device, PLD), Field-Programmable Gate Array (Field-Programmable Gate Array, FPGA), general-purpose processors, controllers, microcontrollers, microprocessors, other electronic units for performing the functions described in the present disclosure, or combinations thereof.
  • ASIC Application Specific Integrated Circuits
  • DSP Digital Signal Processing
  • DSP Device digital signal processing device
  • PLD programmable logic device
  • Field-Programmable Gate Array Field-Programmable Gate Array
  • FPGA Field-Programmable Gate Array
  • the technology described in the embodiments of the present disclosure may be implemented through modules (eg, procedures, functions, etc.) that perform the functions described in the embodiments of the present disclosure.
  • the software codes can be stored in the memory and executed by the processor.
  • the memory may be implemented in the processor or external to the processor.
  • the embodiments of the present disclosure also provide a computer-readable storage medium on which a computer program is stored, and when the computer program is executed by a processor, the above interface availability reporting method or the above interface availability indicating method embodiments are implemented. , And can achieve the same technical effect, in order to avoid repetition, I will not repeat them here.
  • the computer-readable storage medium such as read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk, etc.
  • the embodiments of the present disclosure also provide a computer program product including instructions.
  • the computer runs the instructions of the computer program product, the computer executes the above interface availability reporting method or the above interface availability indication method.
  • the disclosed system, device, and method may be implemented in other ways.
  • the device embodiments described above are only schematic.
  • the division of the unit is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not implemented.
  • the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical, or other forms.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
  • each functional unit in each embodiment of the present disclosure may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.
  • the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium.
  • the technical solution of the present disclosure essentially or the part that contributes to the prior art or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in the various embodiments of the present disclosure.
  • the foregoing storage media include: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk and other media that can store program code .

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Abstract

本公开提供一种接口可用性上报、指示方法和设备，所述上报方法包括：接入AS层向上层上报所述第一终端设备的目标接口的可用性信息；其中，所述可用性信息包括第一信息、第二信息、第三信息、第四信息和第五信息中的至少一种，所述第一信息包括所述目标接口的可用性，所述第二信息包括适用所述目标接口的可用性的链路信息，所述第三信息包括适用所述目标接口的可用性的时间信息，所述第四信息包括适用所述目标接口的可用性的副链路资源选择模式信息，所述第五信息包括所述第一终端设备的当前副链路资源选择模式信息。

Description

接口可用性上报、指示方法和设备
相关申请的交叉引用
本申请主张在2019年1月18日在中国提交的中国专利申请号No.201910049884.2的优先权，其全部内容通过引用包含于此。
技术领域
本公开涉及通信技术领域，更具体地涉及一种接口可用性上报、指示方法和设备。
背景技术
副链路(Sidelink，SL)，也称侧链路或边链路，用于终端设备(UserEquipment，UE)之间不通过网络设备而直接进行通信。在SL资源选择方面，长期演进(Long Term Evolution，LTE)系统中的终端设备通过两种模式进行选择，第一种模式(mode1)是调度资源分配(Scheduled resource allocation)模式，由网络设备向终端设备分配SL资源；第二种模式(mode2)是自主资源选择(autonomous resource selection)模式，由UE自主选择SL资源，其中，第二种模式又包括a、b、c和d四种。在通信方式方面，LTE中的副链路是通过广播的方式通信的；新空口(New Radio，NR)系统中的副链路支持单播、组播和广播三种通信方式，其中，单播是一对一(one to one)的通信方式，组播和广播都是一对多(one to many)的通信方式，但是广播方式不要求多个目标终端设备属于同一个用户组。
在通信过程中，不同通信主体之间的接口(interface)是不同的，比如，终端设备之间直接通信的接口为PC5接口，终端设备与网络设备之间通信的接口为用户到网络的通用(User to Network interface universal，Uu)接口。
目前，对于终端设备来说，是选择PC5接口还是选择Uu接口进行通信，由终端设备的上层(up layer)决定。上层在进行接口选择时，需要参照终端设备的接入(Access，AS)层上报的不同接口的可用性(availability)。但是，终端设备的AS层具体上报了哪些信息尚不清楚。
发明内容
本公开实施例提供一种接口可用性上报、指示方法和设备，以明确需要上报的信息，提高通信有效性。
第一方面，提供了一种接口可用性上报方法，应用于终端设备，所述方法包括：
接入AS层向上层上报所述第一终端设备的目标接口的可用性信息；
其中，所述可用性信息包括第一信息、第二信息、第三信息、第四信息和第五信息中的至少一种，所述第一信息包括所述目标接口的可用性，所述第二信息包括适用所述目标接口的可用性的链路信息，所述第三信息包括适用所述目标接口的可用性的时间信息，所述第四信息包括适用所述目标接口的可用性的副链路资源选择模式信息，所述第五信息包括所述第一终端设备的当前副链路资源选择模式信息。
第二方面，提供了一种接口可用性指示方法，应用于网络设备，所述方法包括：
发送用于确定第一终端设备的目标接口的可用性的指示信息。
第三方面，提供了第一终端设备，该第一终端设备包括：
上报模块，用于接入AS层向上层上报所述第一终端设备的目标接口的可用性信息；
其中，所述可用性信息包括第一信息、第二信息、第三信息、第四信息和第五信息中的至少一种，所述第一信息包括所述目标接口的可用性，所述第二信息包括适用所述目标接口的可用性的链路信息，所述第三信息包括适用所述目标接口的可用性的时间信息，所述第四信息包括适用所述目标接口的可用性的副链路资源选择模式信息，所述第五信息包括所述第一终端设备的当前副链路资源选择模式信息。
第四方面，提供了一种网络设备，该网络设备包括：
发送模块，用于发送用于确定第一终端设备的目标接口的可用性的指示信息。
第五方面，提供了一种终端设备，该终端设备包括存储器、处理器及存 储在所述存储器上并可在所述处理器上运行的无线通信程序，所述无线通信程序被所述处理器执行时实现如第一方面所述的方法的步骤。
第六方面，提供了一种网络设备，该网络设备包括存储器、处理器及存储在所述存储器上并可在所述处理器上运行的无线通信程序，所述无线通信程序被所述处理器执行时实现如第二方面所述的方法的步骤。
第七方面，提供了一种计算机可读介质，所述计算机可读介质上存储有无线通信程序，所述无线通信程序被处理器执行时实现如第一方面或第二方面所述的方法的步骤。
在本公开实施例中，由于第一终端设备的AS层可以向上层上报所述第一终端设备的目标接口的多种可用性信息，使得AS层向上层上报的可用性信息清楚明确，从而可以帮助第一终端设备的上层更好地进行通信接口的选择，提高了通信有效性。
附图说明
为了更清楚地说明本公开实施例或相关技术中的技术方案，下面将对实施例或相关技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本公开中记载的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。
图1是根据本公开实施例的一种接口可用性上报方法的示意性流程图之一。
图2是根据本公开实施例的一种接口可用性上报方法的示意性流程图之二。
图3是根据本公开实施例的一种接口可用性指示方法的示意性流程图。
图4是根据本公开实施例的终端设备400的结构示意图之一。
图5是根据本公开实施例的终端设备400的结构示意图之二。
图6是根据本公开实施例的网络设备600的结构示意图。
图7是根据本公开实施例的终端设备700的结构示意图。
图8是根据本公开实施例的网络设备800的结构示意图。
具体实施方式
为了使本技术领域的人员更好地理解本公开中的技术方案，下面将结合本公开实施例中的附图，对本公开实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅是本公开一部分实施例，而不是全部的实施例。基于本公开中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都应当属于本公开保护的范围。
应理解，本公开实施例的技术方案可以应用于各种通信系统，例如：全球移动通讯(Global System of Mobile communication，GSM)系统、码分多址(Code Division Multiple Access，CDMA)系统、宽带码分多址(Wideband Code Division Multiple Access，WCDMA)系统、通用分组无线业务(General Packet Radio Service，GPRS)、长期演进(Long Term Evolution，LTE)系统、LTE频分双工(Frequency Division Duplex，FDD)系统、LTE时分双工(Time Division Duplex，TDD)、通用移动通信系统(Universal Mobile Telecommunication System，UMTS)或全球互联微波接入(Worldwide Interoperability for Microwave Access，WiMAX)通信系统、5G系统，或者说新无线(New Radio,NR)系统。
终端设备(User Equipment，UE)，也可称之为移动终端(Mobile Terminal)、移动终端设备等，可以经无线接入网(例如，Radio Access Network，RAN)与至少一个核心网进行通信，终端设备可以是移动终端，如移动电话(或称为“蜂窝”电话)和具有移动终端的计算机，例如，可以是便携式、袖珍式、手持式、计算机内置的或者车载的移动装置，它们与无线接入网交换语言和/或数据。
网络设备是一种部署在无线接入网设中用于为终端设备提供接口可用性确定功能的装置，所述网络设备可以为基站，所述基站可以是GSM或CDMA中的基站(Base Transceiver Station，BTS)，也可以是WCDMA中的基站(NodeB)，还可以是LTE中的演进型基站(evolutional Node B，eNB或e-NodeB)及5G基站(gNB)，以及后续演进通信系统中的网络侧设备，然而用词并不构成对本公开保护范围的限制。
需要说明的是，在描述具体实施例时，各过程的序号的大小并不意味着执行顺序的先后，各过程的执行顺序应以其功能和内在逻辑确定，而不应对本公开实施例的实施过程构成任何限定。
还需要说明的是，在本申请实施例中被“和/或”连接的描述对象，可以理解为是“和/或”所连接的对象中的至少一个。
下面先结合附图1，对应用于网络设备的接口可用性上报方法进行说明。
图1示出了根据本公开一个实施例的接口可用性上报方法，应用于第一终端设备。如图1所示，该方法可以包括如下步骤：
步骤101、接入AS层向上层上报所述第一终端设备的目标接口的可用性信息；其中，所述可用性信息包括第一信息、第二信息、第三信息、第四信息和第五信息中的至少一种，所述第一信息包括所述目标接口的可用性，所述第二信息包括适用所述目标接口的可用性的链路信息，所述第三信息包括适用所述目标接口的可用性的时间信息，所述第四信息包括适用所述目标接口的可用性的副链路资源选择模式信息，所述第五信息包括所述第一终端设备的当前副链路资源选择模式信息。
目标接口可以包括Uu接口和PC5接口中的至少一个，其中，Uu接口是用户到网络的通用(User to Network interface universal，Uu)接口，PC5接口是终端设备之间直接通信的接口。
接入(Access，AS)层指的是第一终端设备的AS层，以5G系统的协议栈为例，无线资源控制(Radio Resource Control，RRC)层以下(包括RRC层)的层为AS层，RRC层以上的层(不包括RRC层)为非接入(NAS)层，RRC层以上的层也称为AS层的上层。
其中，目标接口的可用性(availability)包括可用(availiable)或不可用(not availiable)，下面通过举例说明目标接口可用或不可用的含义。以目标接口为Uu接口为例，Uu接口可用，意味着能够通过第一终端设备与网络设备之间的连接进行业务传输，Uu接口不可用，意味着不能通过第一终端设备与网络设备之间的连接进行业务传输；以目标接口为PC5接口为例，PC5接口可用，意味着能够通过第一终端设备与至少一个第二终端设备之间的连接进行业务传输，PC5接口不可用，意味着不能通过第一终端设备与至少一个 第二终端设备之间的连接进行业务传输。
在发明实施例中，第一终端设备可以是副链路业务中的源(Source)终端设备，第二终端设备可以是任意的终端设备，第二终端设备也可以是副链路业务中的目标(Destination)终端设备(也可以称为对端终端设备)，且第二终端设备既可以是第一终端设备发送业务数据的对端终端设备，也可以是第一终端设备发送控制信息的对端终端设备，下文中述及的第二终端设备的含义类似。其中，副链路可以是单播链路和组播链路中的任一种。
可以理解，由于上报的可用性信息包括第一信息、第二信息、第三信息、第四信息和第五信息中的至少一种，因此，上报的可用性信息的具体内容存在第一信息、第二信息、第三信息、第四信息和第五信息的多种组合情况。下面先对第一信息、第二信息、第三信息、第四信息和第五信息分别进行说明。
第一信息具体可以包括所述目标接口的可用或不可用。
在具体上报时，可以利用1比特(bit)来指示第一信息，例如，当目标接口为PC5接口时，可以利用1bit指示PC5接口可用，或者利用1bit指示PC5接口不可用；当目标接口为Uu接口时，可以利用1bit指示Uu接口可用，或者利用1bit指示Uu接口不可用。
当目标接口包括PC5接口和Uu接口时，可以用2bits联合指示第一信息，具体可以利用2bits中的1bit指示PC5接口可用或不可用，利用2bits中的剩余1bit指示Uu接口可用或不可用，这2bits的顺序可以是任意的，也可以由协议规定、预配置或由AS层的上层确定。
当目标接口中的某一接口存在多种情况时，可以用多个bits对这多种情况下的该接口的可用性分别进行指示，且这多个bits的顺序也可以是任意的，或者可以由协议规定、预配置或由AS层的上层确定。例如，如果目标接口为PC5接口，且PC5存在单播和组播两种情况，那么可以用2bits联合指示第一信息，具体的，利用这2bits中的1bit指示单播情况下的PC5接口可用或不可用，利用2bits中的剩余1bit指示组播情况下的PC5接口可用或不可用，这2bits的顺序也可以是任意的。再如，如果目标接口为PC5接口，且PC5存在单播、组播和广播三种情况，那么可以用3bits联合指示第一信息， 具体的，利用这3bits中的第一bit指示单播情况下的PC5接口可用或不可用，利用3bits中的第二bit指示组播情况下的PC5接口可用或不可用，利用3bits中的第三bit指示广播情况下的PC5接口可用或不可用，这3bits的顺序也可以是任意的。
第二信息具体包含的内容分很多种情况，下文会结合具体的实施例进行说明，此处暂不赘述。
第三信息具体可以包括适用所述目标接口的可用性的时间信息，该时间信息可以由一个定时器(timer)来定义，也可以是一个时间的绝对值。该时间信息用于确定所述目标接口的可用性的生效时间或停止生效的时间。
且可选地，当可用性信息包括所述第三信息时，图1所示的方法还可以包括：基于协议规定、网络设备配置和预配置中的至少一种，确定所述第三信息。也即，可以基于协议规定、网络设备配置和预配置中的至少一种定义定时器的值或时间的绝对值。
例如，假如目标接口为PC5接口，PC5接口的可用性为不可用，且定时器值为5s，则在定时器超时后，PC5接口不可用信息开始生效或停止生效。或者，假如目标接口为Uu接口，Uu接口的可用性为不可用，且定时器值为5s，则在定时器超时后，Uu接口不可用信息开始生效或停止生效。
第四信息具体可以包括适用所述目标接口的可用性的副链路资源选择模式信息，副链路资源选择模式包括调度资源分配(Scheduled resource allocation)模式(mode1)和自主资源选择(autonomous resource selection)模式(mode2)，其中，mode2又分为2a、2b、2c和2d四种。
例如，假设目标接口为PC5，第一信息包括PC5接口不可用，第四信息包括适用PC5接口不可用的副链路资源选择模式为mode2，或者说，AS层向上层上报的可用性信息包括“PC5not available+mode2”，意味着mode2下PC5接口不可用。
再如，假设目标接口为Uu，第一信息包括Uu接口不可用，第四信息包括适用Uu接口不可用的副链路资源选择模式为mode1，或者说，AS层向上层上报的可用性信息包括“Uu not available+mode1”，意味着mode1下Uu接口不可用。
第五信息具体包括所述第一终端设备的当前副链路资源选择模式信息。第一终端设备的当前副链路资源选择模式信息可以包括第一终端设备当前采用的副链路资源选择模式，且当前采用的副链路资源选择模式可以是上文中的mode1或mode2，当第一终端设备当前采用的副链路资源选择模式为mode2时，还可以是2a、2b、2c和2d中的任一个。
在本说明书实施例中，虽然是通过单独举例的方式对可用性信息中的第一信息、第二信息、第三信息、第四信息和第五信息的具体内容分别进行了说明，但应理解，当需要上报的可用性信息是第一信息、第二信息、第三信息、第四信息和第五信息中的多个时，可以通过组合的方式确定具体需要上报的可用性信息。
本公开实施例提供的一种接口可用性上报方法，由于第一终端设备的AS层可以向上层上报所述第一终端设备的目标接口的多种可用性信息，使得AS层向上层上报的接口的可用性信息清楚明确，从而可以帮助第一终端设备的上层更好地进行通信接口的选择，提高了通信有效性。
如图2所示，在另一实施例中，本公开实施例提供的一种接口可用性上报方法，还可以包括：
步骤102、基于预设信息，确定所述目标接口的可用性；其中，所述预设信息包括第六信息、第七信息、第八信息和第九信息中的至少一种，所述第六信息包括所述第一终端设备与目标设备之间的连接信息；所述第七信息包括来自网络设备的用于确定所述目标接口的可用性的信息；所述第八信息包括所述第一终端设备的当前副链路资源选择模式信息；所述第九信息包括所述第一终端设备的无线资源控制RRC状态。
下面通过多个例子，对如何基于预设信息确定目标接口的可用性，以及对应上报的第二信息的具体内容是什么进行说明。
首先通过下文的第一个例子至第四个例子，对基于第六信息确定PC5接口的可用性的过程，以及对应上报的第二信息的具体内容是什么进行说明。
在第一个例子中，如果目标接口为PC5接口，所述预设信息包括所述第六信息，目标设备包括第二终端设备，且所述第一终端设备与目标设备之间的连接信息为单播连接信息(也即第一终端设备与第二终端设备之间的连接 为单播连接)，则步骤102可以包括：在所述第一终端设备与至少一个所述第二终端设备之间成功建立单播连接和/或单播连接正常时，确定所述目标接口可用。
在此基础上，可选地，图1或图2所示的接口可用性上报方法还可以包括：在满足第一预设条件时，确定所述第一终端设备与所述目标设备之间成功建立单播连接和/或单播连接正常。
其中，所述第一预设条件包括但不限于如下至少一种：
所述第一终端设备收到所述第二终端设备发送的单播连接建立消息；
所述第一终端设备收到所述第二终端设备发送的直接通信接受信息；
所述第一终端设备收到网络设备发送的来自所述第二终端设备的单播连接建立消息；
所述第一终端设备收到网络设备发送的来自所述第二终端设备的直接通信接受信息；
所述第一终端设备与所述第二终端设备之间的单播连接正常。
一般情况下，当所述第一终端设备与所述第二终端设备之间的单播连接没有发生副链路失败，或没有出现链路切换时，即认为所述第一终端设备与所述第二终端设备之间的单播连接正常。
需要说明的是，成功建立单播连接可以理解为是对单播建立过程和结果的描述，单播连接正常可以看做是对已建立的单播连接的描述。
在第二个例子中，如果目标接口为PC5接口，所述预设信息包括所述第六信息，目标设备包括第二终端设备，且所述第一终端设备与目标设备之间的连接信息为单播连接信息(也即第一终端设备与第二终端设备之间的连接为单播连接)，则步骤102可以包括：在所述第一终端设备与至少一个所述第二终端设备之间未成功建立单播连接和/或单播连接异常时，确定所述目标接口不可用。
在此基础上，可选地，图1或图2所示的接口可用性上报方法还可以包括：在满足第二预设条件时，确定所述第一终端设备与所述目标设备之间未成功建立单播连接和/或单播连接异常。
其中，所述第二预设条件包括但不限于如下至少一种：
所述第一终端设备收到至少一个所述第二终端设备发送的单播连接拒绝消息；
所述第一终端设备收到网络设备发送的来自至少一个所述第二终端设备的单播连接拒绝消息；
所述第一终端设备收到至少一个所述第二终端设备发送的直接通信拒绝消息；
所述第一终端设备收到网络设备发送的来自至少一个所述第二终端设备的直接通信拒绝消息；
所述第一终端设备与至少一个所述第二终端设备之间不存在单播连接；
所述第一终端设备释放了与至少一个所述第二终端设备建立的单播连接；
所述第一终端设备收到至少一个所述第二终端设备发送的单播连接释放消息；
所述第一终端设备收到网络设备发送的来自至少一个所述第二终端设备的单播连接释放消息；
所述第一终端设备与至少一个所述第二终端设备之间的单播连接发生了链路失败；
所述第一终端设备与至少一个所述第二终端设备之间的单播连接发生了切换；
所述第一终端设备与至少一个所述第二终端设备之间的AS层参数协商失败。
需要说明的是，未成功建立单播连接可以理解为是对单播建立过程和结果的描述，单播连接异常可以看做是对已建立的单播连接的描述。
可选地，在上述第一个例子和第二例子的基础上，如果步骤101中上报的可用性信息包括第二信息，则所述第二信息具体可以包括但不限于如下至少一种：适用所述目标接口的可用性的链路类型为单播链路，以及所述目标接口的可用性对应的单播链路信息。
其中，所述单播链路信息包括所述单播链路的链路ID、所述单播链路的数据承载ID、所述单播链路的控制承载ID、所述第一终端设备的ID和所述第二终端设备的ID中的至少一种。
例如，假如依据上述第一个例子确定PC5接口可用，则可用性信息中的第一信息可以包括PC5接口可用，可用性信息中的第二信息可以包括PC5接口可用适用于单播链路，以及PC5接口可用所对应的单播链路的链路信息包括单播链路的链路ID、单播链路的数据承载ID、单播链路的控制承载ID、第一终端设备的ID和第二终端设备的ID等信息。
第一终端设备的ID或第二终端设备的ID可以包括以下信息中的至少一种：AS层的上层(upper layer)ID、层2(Layer，L2)ID、物理层ID、国际移动用户识别码(International Mobile Subscriber Identification Number，IMSI)、临时移动用户识别码(Temporary Mobile Subscriber Identity，5G-S-TMSI)、源(Source)终端设备ID和目标(Destination)终端设备ID，等等。
在第三个例子中，如果目标接口为PC5接口，所述预设信息包括所述第六信息，目标设备包括至少一个第二终端设备，且所述第一终端设备与目标设备之间的连接信息为组播连接信息(也即第一终端设备与第二终端设备之间的连接为组播连接)，则步骤102可以包括：在所述第一终端设备与至少一个所述第二终端设备成功建立组播连接和/或组播连接正常时，确定所述目标接口可用。
在此基础上，可选地，图1或图2所示的接口可用性上报方法还可以包括：在满足第三预设条件时，确定所述第一终端设备与至少一个所述第二终端设备成功建立组播连接和/或组播连接正常。
其中，所述第三预设条件包括但不限于如下至少一种：
所述第一终端设备收到至少一个所述第二终端设备发送的组播连接建立消息；
所述第一终端设备收到至少一个所述第二终端设备发送的直接通信接受信息；
所述第一终端设备收到网络设备发送的来自至少一个所述第二终端设备的组播连接建立消息；
所述第一终端设备收到网络设备发送的来自至少一个所述第二终端设备的直接通信接受信息；
所述第一终端设备与至少一个所述第二终端设备之间的组播连接正常。
一般情况下，如果第一终端设备与至少一个所述第二终端设备没有发生副链路失败或切换，即认为第一终端与至少一个所述终端设备之间的组播连接正常。
需要说明的是，成功建立组播连接可以理解为是对组播建立过程和结果的描述，组播连接正常可以看做是对已建立的组播连接的描述。
在第四个例子中，如果目标接口为PC5接口，所述预设信息包括所述第六信息，目标设备包括至少一个第二终端设备，且所述第一终端设备与目标设备之间的连接信息为组播连接信息(也即第一终端设备与第二终端设备之间的连接为组播连接)，则步骤102可以包括：在所述第一终端设备与至少一个所述第二终端设备未成功建立组播连接和/或组播连接异常时，确定所述目标接口可用。
在此基础上，可选地，图1或图2所示的接口可用性上报方法还可以包括：在满足第四预设条件时，确定所述第一终端设备与至少一个所述第二终端设备未成功建立组播连接和/或组播连接异常。
其中，所述第四预设条件包括但不限于如下至少一种：
所述第一终端设备收到至少一个所述第二终端设备发送的组播连接拒绝消息；
所述第一终端设备收到网络设备发送的来自至少一个所述第二终端设备的组播连接拒绝消息；
所述第一终端设备收到至少一个所述第二终端设备发送的直接通信拒绝消息；
所述第一终端设备收到网络设备发送的来自至少一个所述第二终端设备的直接通信拒绝消息；
所述第一终端设备与至少一个所述第二终端设备之间不存在已建立的组播连接；
所述第一终端设备释放了与至少一个所述第二终端设备建立的组播连接；
所述第一终端设备收到至少一个所述第二终端设备发送的组播连接释放消息；
所述第一终端设备收到网络设备发送的来自至少一个所述第二终端设备 的组播连接释放消息；
所述第一终端设备与至少一个所述第二终端设备之间的组播连接发生了链路失败；
所述第一终端设备与至少一个所述第二终端设备之间的组播连接发生了切换；
所述第一终端设备与至少一个所述第二终端设备之间的AS层参数协商失败。
需要说明的是，未成功建立组播连接可以理解为是对组播建立过程和结果的描述，组播连接异常可以看做是对已建立的组播连接的描述。
可选地，在上述第三个例子和第四例子的基础上，如果步骤101中上报的可用性信息包括第二信息，则所述第二信息具体可以包括但不限于如下至少一种：适用所述目标接口的可用性的链路类型为组播链路，以及所述目标接口的可用性对应的组播链路信息。
其中，所述组播链路信息包括所述组播链路的链路ID、所述组播链路的数据承载ID、所述组播链路的控制承载ID、所述第一终端设备的ID和至少一个所述第二终端设备的ID中的至少一种。
例如，假如依据上述第三个例子确定PC5接口可用，则可用性信息中的第一信息可以包括PC5接口可用，可用性信息中的第二信息可以包括PC5接口可用适用于组播链路，以及PC5接口可用所对应的组播链路的链路信息包括组播链路的链路ID、组播链路的数据承载ID、组播链路的控制承载ID、该组播链路中的第一终端设备的ID和第二终端设备的ID等信息。
同上文，第一终端设备的ID或第二终端设备的ID可以包括以下信息中的至少一种：AS层的上层ID、层2ID、物理层ID、IMSI、5G-S-TMSI、源终端设备ID和目标终端设备ID，等等。
需要说明的是，在上述第一个例子至第四个例子中，第一终端设备可以是副链路业务中的源(Source)终端设备，第二终端设备可以是任意的终端设备，第二终端设备也可以是副链路业务中的目标(Destination)终端设备(也可以称为对端终端设备)，且第二终端设备既可以是第一终端设备发送业务数据的对端终端设备，也可以是第一终端设备发送控制信息的对端终端设备。
下面通过第五个例子和第六个例子，对如何基于第六信息确定Uu接口的可用性，以及对应上报的第二信息的具体内容是什么进行说明。
在第五个例子中，如果目标接口为Uu接口，所述预设信息包括所述第六信息，目标设备包括网络设备，且所述第一终端设备与目标设备之间的连接信息为RRC连接信息，则步骤102可以包括：在所述第一终端设备与所述网络设备之间成功建立RRC连接和/或RRC连接正常时，确定所述目标接口可用。
相应的，图1或图2所示的方法还可以包括：在满足第五预设条件时，确定所述第一终端设备与所述网络设备之间成功建立RRC连接和/或RRC连接正常。
其中，所述第五预设条件包括但不限于如下至少一种：
所述第一终端设备收到所述网络设备发送的消息4；
所述第一终端设备收到所述网络设备发送的消息B；
所述第一终端设备收到所述网络设备发送的RRC连接建立消息；
所述第一终端设备收到所述网络设备发送的寻呼(paging)消息。
需要说明的是，消息4是4步随机接入过程中的第四步收到的消息msg4，消息B是2步随机接入过程中的第二步收到的消息，寻呼(paging)消息可能为无线接入网(Radio Access Network，RAN)的paging消息，也可能为核心网的paging消息。
需要说明的是，成功建立RRC连接可以理解为是对RRC建立过程和结果的描述，RRC连接正常可以看做是对已建立的RRC连接的描述。
在第六个例子中，如果目标接口为Uu接口，所述预设信息包括所述第六信息，目标设备包括网络设备，且所述第一终端设备与目标设备之间的连接信息为RRC连接信息，则步骤102可以包括：在所述第一终端设备与所述网络设备之间未成功建立RRC连接和/或RRC连接异常时，确定所述目标接口可用。
相应的，图1或图2所示的方法还可以包括：在满足第六预设条件时，确定所述第一终端设备与所述网络设备之间未成功建立RRC连接和/或RRC连接异常。
其中，所述第六预设条件包括但不限于如下至少一种：
所述第一终端设备收到所述网络设备发送的RRC连接拒绝消息；
所述第一终端设备收到所述网络设备发送的小区接入控制信息；
所述第一终端设备收到所述网络设备发送的小区接入禁止信息；
所述第一终端设备收到所述网路设备发送的RRC连接释放消息；
所述第一终端设备与所述网络设备之间发生了无线链路失败；
所述第一终端设备触发了小区切换过程；
所述第一终端设备发生了波束失败；
所述第一终端设备触发了波束失败恢复过程。
需要说明的是，未成功建立RRC连接可以理解为是对RRC建立过程和结果的描述，RRC连接异常可以看做是对已建立的RRC连接的描述。
可选地，在上述第五个例子和第六例子的基础上，如果步骤101中上报的可用性信息包括第二信息，则所述第二信息具体可以包括所述第一终端设备的RRC状态信息。其中，RRC状态可以包括连接态(connected)、空闲态(idle)或非激活态(Inactive)。并且与上报第一信息类似，在具体上报时，也可以利用1bit来指示第一终端设备的RRC状态信息。
在此基础上，举例来说，如果步骤101中上报的可用性信息包括第一信息和第二信息，其中第一信息具体包括Uu接口不可用，第二信息包括第一终端设备的RRC状态为空闲态，也即可用性信息包括“Uu not available+idle”，则意味着，第一终端设备的RRC连接处于空闲态，第一终端设备的Uu接口不可用，需要触发第一终端设备的RRC状态进入连接态，才能使Uu接口可用；如果可用性信息包括“Uu not available+connected”，意味着Uu接口完全不可用。
下面通过第七个例子，对基于来自网络设备的第七信息，确定Uu接口的可用性的过程进行说明。
在第七个例子中，目标接口为Uu接口，所述预设信息包括所述第七信息，且所述第七信息包括但不限于如下至少一种：来自网络设备的第一调度信息、来自网络设备的第一配置信息和来自网络设备的第二配置信息。
第一调度信息用于向所述第一终端设备调度副链路资源，且所述第一调 度信息中携带用于确定所述目标接口的可用性的信息。
也即网络设备在通过第一调度信息对mode1下的第一终端设备进行副链路资源调度时，可以在第一调度信息中额外增加1bit或多个bits来指示Uu接口可用或不可用。
第一配置信息用于指示所述目标接口的可用性。
也即网络设备可以利用专门的配置信息向第一终端设备指示Uu接口可用或不可用，具体可以用1bit来指示。
第二配置信息用于向所述第一终端设备配置副链路资源池和带宽部分(Band Width Part，BWP)中的至少一种，且所述第二配置信息中携带用于确定所述目标接口的可用性的信息。
也即网络设备可以在用于向第一终端设备配置副链路资源池和/或BWP的配置信息中携带用于确定所述Uu接口的可用性的信息。
可以理解，第一终端设备在接收到来自网络设备的第一调度信息、第一配置信息和第二配置信息之后，可以直接确定出Uu接口可用或不可用。
当然，网络设备还可以通过其他配置信息来携带用于确定所述目标接口的可用性的信息，本公开对此不做限制。
下面通过第八个例子，对基于来自网络设备的第七信息，确定PC5接口的可用性的过程进行说明。
在第八个例子中，目标接口为PC5接口，所述预设信息包括所述第七信息，且所述第七信息包括但不限于如下至少一种：来自网络设备的第二调度信息、来自网络设备的第三配置信息、来自网络设备的第四配置信息、来自网络设备的第五配置信息和来自网络设备的第六配置信息。
第二调度信息用于向所述第一终端设备调度副链路资源，且所述第二调度信息中携带用于确定所述目标接口的可用性的信息。
也即网络设备在通过第二调度信息对mode1下的第一终端设备进行副链路资源调度时，可以在第二调度信息中额外增加1bit或多个bits来指示PC5接口可用或不可用。
第三配置信息用于指示所述目标接口的可用性。
也即网络设备可以利用专门的配置信息向第一终端设备指示PC5接口可 用或不可用，具体可以用1bit来指示。
第四配置信息用于向所述第一终端设备配置预设资源，且所述第四配置信息中携带用于确定所述目标接口的可用性的信息。
也即网络设备可以在用于向第一终端设备配置副链路资源池和/或BWP的配置信息中携带用于确定所述PC5接口的可用性的信息。
可以理解，第一终端设备在接收到来自网络设备的第二调度信息、第三配置信息和第四配置信息之后，可以直接确定出PC5接口可用或不可用。
网络设备通过第二调度信息、第三配置信息和第四配置信息中的至少一个，指示PC5接口可用或不可用的方式，可以看作是一种显式的指示方式，而下面要解释的网络设备通过第五配置信息和/或第六配置信息指示PC5接口可用或不可用的方式，由于并没有直接在配置信息中携带用于确定所述PC5接口的可用性的信息，因此可以看作是一种隐式的指示方式。
对于第五配置信息而言，在所述第五配置信息中携带用于配置预设资源的信息时，所述第五配置信息可以用于确定所述目标接口可用；在所述第五配置信息中未携带用于配置预设资源的信息时，所述第五配置信息可以用于确定所述目标接口不可用。也即，可以通过第五配置信息中是否携带配置预设资源的信息来间接的指示PC5接口可用或不可用，具体的，如果携带了，则第五配置信息可以用于指示PC5接口可用，如果未携带，则第五配置信息可以用于指示PC5接口不可用。
当然，反过来也是可行的，也即在所述第五配置信息中携带用于配置预设资源的信息时，所述第五配置信息可以用于确定所述目标接口不可用；在所述第五配置信息中未携带用于配置预设资源的信息时，所述第五配置信息可以用于确定所述目标接口可用。
所述第六配置信息用于向所述第一终端设备配置预设资源，且在所述第六配置信息配置的预设资源不能实现所述第一终端设备与第二终端设备的通信时，所述第六配置信息用于确定所述目标接口不可用，在所述第六配置信息配置的预设资源能够实现所述第一终端设备与第二终端设备的通信时，所述第六配置信息用于确定所述目标接口可用。
也即，如果第六配置信息里面携带的资源配置信息所配置的资源可以让 第一终端设备和第二终端设备通信，则代表PC5接口可用。如果第六配置信息里面携带的资源配置信息所配置的资源无法让第一终端设备和第二终端设备通信，则代表PC5接口不可用。
通常情况下，当网络设备通过第六配置信息给第一终端设备配置了与第二终端设备不同的预设资源时，会导致不能实现所述第一终端设备与第二终端设备的通信。
其中，所述预设资源包括副链路资源池和BWP中的至少一种。
可以理解，第一终端设备在接收到来自网络设备的第五配置信息和第六配置信息之后，也可以确定出PC5接口可用或不可用。并且，由于第五配置信息和第六配置信息中没有增加额外的比特，因此还可以节约通信资源。
需要说明的是，第七个例子中所述的第一配置信息和第二配置信息，以及第八个例子中所述的第三配置信息至第六配置信息，可以是网络设备发送的专用信令，也可以是网络设备发送的广播消息。
还需要说明的是，第八个例子中所述的第四配置信息至第六配置信息，可以不同的配置信息，也可以是同一配置信息。
下面通过第九个例子，对基于第八信息确定目标接口的可用性的过程进行说明。
在第九个例子中，如果所述预设信息包括第八信息，则步骤102可以包括：基于所述第八信息与所述目标接口的可用性的映射关系，确定所述目标接口的可用性。其中，所述第八信息包括第一终端设备的当前副链路资源选择模式。
第九个例子既可以用于确定Uu接口的可用性，也可以用于确定PC5接口的可用性。
例如，可以预设置Uu接口与第一终端设备的当前副链路资源选择模式的映射关系，从而基于该映射关系确定出Uu接口的可用性。具体如，假如预设置的映射关系包括“Uu available+mode1”，这说明当第一终端设备的当前副链路资源选择模式为mode1时，第一终端设备的Uu接口可用。
再如，可以预设置PC5接口与第一终端设备的当前副链路资源选择模式的映射关系，从而基于该映射关系确定出PC5接口的可用性。具体如，假如 预设置的映射关系包括“PC5available+mode2”，这说明当第一终端设备的当前副链路资源选择模式为mode2时，第一终端设备的PC5接口可用，等等，本说明书不一一举例说明。
下面通过第十个例子，对基于第九信息确定目标接口的可用性的过程进行说明。
在第十个例子中，如果所述预设信息包括第九信息，则步骤102可以包括：基于所述第九信息与所述目标接口的可用性的映射关系，确定所述目标接口的可用性。
第九信息可以包括第一终端设备的RRC状态，其中，RRC状态可以包括连接态(connected)、空闲态(idle)或非激活态(Inactive)。
第十个例子既可以用于确定Uu接口的可用性，也可以用于确定PC5接口的可用性。
例如，可以预设置Uu接口与第一终端设备的RRC状态的映射关系，从而基于该映射关系确定出Uu接口的可用性。
具体如，假如预设置的映射关系包括“Uu available+connected”，说明当第一终端设备的RRC状态为连接态时，第一终端设备的Uu接口可用；或者，假如预设置的映射关系包括“Uu available+idle/Inactive”，说明当第一终端设备的RRC状态为空闲态或非激活态时，第一终端设备的Uu接口可用；或者，假如预设置的映射关系包括“Uu available+idle/Inactive+suitable cell”，说明当第一终端设备的RRC状态为空闲态或非激活态，且驻留在合适的小区时，第一终端设备的Uu接口可用，等等。
再如，假如预设置的映射关系包括“Uu not available+idle/Inactive”，说明当第一终端设备的RRC状态为空闲态或非激活态时，第一终端设备的Uu接口不可用；或者，假如预设置的映射关系包括“Uu not available+idle/Inactive+acceptable cell”，说明当第一终端设备的RRC状态为空闲态或非激活态，且驻留在可接受的小区时，第一终端设备的Uu接口不可用，等等。
又如，可以预设置PC5接口与第一终端设备的RRC状态的映射关系，从而基于该映射关系确定出PC5接口的可用性。具体如，假如预设置的映射关系包括“PC5 not available+idle”，这说明当第一终端设备的RRC状态为空 闲态时，第一终端设备的PC5接口不可用，等等。
可以理解，目标接口的可用性与第一终端设备的RRC状态的映射关系有很多种，本说明书不一一举例说明。
需要说明的是，虽然上文中通过十个例子对单独基于第六信息、第七信息、第八信息和第九信息，确定目标接口的可用性做了说明，但应理解，在实际应用中，可以同时基于第六信息、第七信息、第八信息和第九信息中的多个信息确定目标接口的可用性。
图2所示的实施例提供的一种接口可用性上报方法，由于不但可以上报详细的可用性信息，还提供了确定目标接口的可用性的具体方式，因此可以解决如何确定目标接口可用性的问题。
可选地，在上述任一实施例的基础上，如果所述目标接口为PC5，则本公开提供的一种接口可用性上报方法还可以包括：向所述上层上报所述第一终端设备采用广播方式通信时所述目标接口的可用性。
需要补充说明的是，第一终端设备的AS层向上层上报的可用性信息可以是第一信息、第二信息、第三信息、第四信息和第五信息的任意组合。
还需要补充说明的是，第一终端设备的AS层在向上层上报第一信息时，如果目标接口包括PC5接口和Uu接口，则可以用2bits联合指示第一信息，具体可以利用2bits中的1bit指示PC5接口可用或不可用，利用2bits中的剩余1bit指示Uu接口可用或不可用，这2bits的顺序可以是任意的，也可以由协议规定、预配置或由AS层的上层确定。
以及，在具体上报时，如果目标接口中的某一接口存在多种情况，则可以用多个bits对这多种情况下的该接口的可用性分别进行指示，且这多个bits的顺序也可以是任意的，或者可以由协议规定、预配置或由AS层的上层确定。例如，如果目标接口为PC5接口，且PC5存在单播和组播两种情况，那么可以用2bits联合指示第一信息，具体的，利用这2bits中的1bit指示单播情况下的PC5接口可用或不可用，利用2bits中的剩余1bit指示组播情况下的PC5接口可用或不可用，这2bits的顺序也可以是任意的。再如，如果目标接口为PC5接口，且PC5存在单播、组播和广播三种情况，那么可以用3bits联合指示第一信息，具体的，利用这3bits中的第一bit指示单播情况下的PC5 接口可用或不可用，利用3bits中的第二bit指示组播情况下的PC5接口可用或不可用，利用3bits中的第三bit指示广播情况下的PC5接口可用或不可用，这3bits的顺序也可以是任意的。
以上对应用于第一终端设备的接口可用性上报方法进行了说明，下面将结合图3对应用于网络设备的接口可用性指示方法进行说明。
如图3所示，本公开实施例还提供了一种接口可用性指示方法，应用于网络设备，所述方法包括：
步骤301、发送用于确定第一终端设备的目标接口的可用性的指示信息。
其中，目标接口包括Uu接口和PC5接口中的至少一个。目标接口的可用性包括可用或不可用。
在一个例子中，如果所述目标接口包括Uu接口，所述指示信息包括但不限于第一调度信息、第一配置信息和第二配置信息中的至少一种。
第一调度信息用于向所述第一终端设备调度副链路资源，且所述第一调度信息中携带用于确定所述目标接口的可用性的信息。
第一配置信息用于指示所述目标接口的可用性。
第二配置信息用于向所述第一终端设备配置副链路资源池和带宽部分BWP中的至少一种，且所述第二配置信息中携带用于确定所述目标接口的可用性的信息。
可以理解，第一终端设备在接收到来自网络设备的第一调度信息、第一配置信息和第二配置信息之后，可以直接确定出Uu接口可用或不可用。
在另一个例子中，如果所述目标接口包括PC5接口，所述指示信息包括第二调度信息、第三配置信息、第四配置信息、第五配置信息和第六配置信息中的至少一种。
第二调度信息用于向所述第一终端设备调度副链路资源，且所述第二调度信息中携带用于确定所述目标接口的可用性的信息。
第三配置信息用于指示所述目标接口的可用性。
第四配置信息用于向所述第一终端设备配置预设资源，且所述第四配置信息中携带用于确定所述目标接口的可用性的信息。
可以理解，第一终端设备在接收到来自网络设备的第二调度信息、第三 配置信息和第四配置信息之后，可以直接确定出PC5接口可用或不可用。
网络设备通过第二调度信息、第三配置信息和第四配置信息中的至少一个，指示PC5接口可用或不可用的方式，可以看作是一种显式的指示方式，而下面要解释的网络设备通过第五配置信息和/或第六配置信息指示PC5接口可用或不可用的方式，由于并没有直接在配置信息中携带用于确定所述PC5接口的可用性的信息，因此可以看作是一种隐式的指示方式。
对于第五配置信息而言，在第五配置信息中携带用于配置预设资源的信息时，所述第五配置信息可以用于确定所述目标接口可用，在所述第五配置信息中未携带用于配置预设资源的信息时，所述第五配置信息可以用于确定所述目标接口不可用。
当然，反过来也是可行的，也即在所述第五配置信息中携带用于配置预设资源的信息时，所述第五配置信息可以用于确定所述目标接口不可用；在所述第五配置信息中未携带用于配置预设资源的信息时，所述第五配置信息可以用于确定所述目标接口可用。
所述第六配置信息用于向所述第一终端设备配置预设资源，且在所述第六配置信息配置的预设资源不能实现所述第一终端设备与第二终端设备的通信时，所述第六配置信息用于确定所述目标接口不可用，在所述第六配置信息配置的预设资源能够实现所述第一终端设备与第二终端设备的通信时，所述第六配置信息用于确定所述目标接口可用。
也即，如果第六配置信息里面携带的资源配置信息所配置的资源可以让第一终端设备和第二终端设备通信，则代表PC5接口可用。如果第六配置信息里面携带的资源配置信息所配置的资源无法让第一终端设备和第二终端设备通信，则代表PC5接口不可用。
通常情况下，当网络设备通过第六配置信息给第一终端设备配置了与第二终端设备不同的预设资源时，会导致不能实现所述第一终端设备与第二终端设备的通信。
其中，所述预设资源包括副链路资源池和BWP中的至少一种。
可以理解，第一终端设备在接收到来自网络设备的第五配置信息和第六配置信息之后，也可以确定出PC5接口可用或不可用。并且，由于第五配置 信息和第六配置信息中没有增加额外的比特，因此还可以节约通信资源。
需要说明的是，上述第一配置信息至第六配置信息，可以是网络设备发送的专用信令，也可以是网络设备发送的广播消息。
还需要说明的是，第四配置信息至第六配置信息可以是同一配置信息，也可以是不同配置信息。
图3所示的实施例提供的一种接口可用性指示方法，由于可以向第一终端设备发送用于确定第一终端设备的目标接口的可用性的指示信息，因此可以使第一终端设备据此确定出目标接口是否可用，解决了如何确定目标接口可用性的问题。
以上对应用于网络设备的接口可用性指示方法进行了说明，下面将结合图4至图6详细描述根据本公开实施例的第一终端设备和网络设备。
图4示出了本公开实施例提供的第一终端设备的结构示意图，如图4所示，第一终端设备400包括：上报模块401。
上报模块401，用于接入AS层向上层上报所述第一终端设备的目标接口的可用性信息。
其中，所述可用性信息包括第一信息、第二信息、第三信息、第四信息和第五信息中的至少一种，所述第一信息包括所述目标接口的可用性，所述第二信息包括适用所述目标接口的可用性的链路信息，所述第三信息包括适用所述目标接口的可用性的时间信息，所述第四信息包括适用所述目标接口的可用性的副链路资源选择模式信息，所述第五信息包括所述第一终端设备的当前副链路资源选择模式信息。
目标接口可以包括Uu接口和PC5接口中的至少一个。目标接口的可用性(availability)包括可用(availiable)或不可用(not availiable)。
第一终端设备可以是副链路业务中的源(Source)终端设备，第二终端设备可以是任意的终端设备，第二终端设备也可以是副链路业务中的目标(Destination)终端设备(也可以称为对端终端设备)，且第二终端设备既可以是第一终端设备发送业务数据的对端终端设备，也可以是第一终端设备发送控制信息的对端终端设备，下文中述及的第二终端设备的含义类似。
可以理解，由于上报的可用性信息包括第一信息、第二信息、第三信息、 第四信息和第五信息中的至少一种，因此，上报的可用性信息的具体内容存在第一信息、第二信息、第三信息、第四信息和第五信息的多种组合情况。下面先对第一信息、第二信息、第三信息、第四信息和第五信息分别进行说明。
第一信息具体可以包括所述目标接口的可用或不可用。
第二信息具体包含的内容分很多种情况，下文会结合具体的实施例进行说明，此处暂不赘述。
第三信息具体可以包括适用所述目标接口的可用性的时间信息，该时间信息可以由一个定时器(timer)来定义，也可以是一个时间的绝对值。该时间信息用于确定所述目标接口的可用性的生效时间或停止生效的时间。
可选地，当可用性信息包括所述第三信息时，图4所示的第一终端设备400还可以包括：第三信息确定模块，用于基于协议规定、网络设备配置和预配置中的至少一种，确定所述第三信息。
第四信息具体可以包括适用所述目标接口的可用性的副链路资源选择模式信息，副链路资源选择模式包括调度资源分配(Scheduled resource allocation)模式(mode1)和自主资源选择(autonomous resource selection)模式(mode2)，其中，mode2又分为2a、2b、2c和2d四种。
第五信息具体包括所述第一终端设备的当前副链路资源选择模式信息。第一终端设备的当前副链路资源选择模式信息可以包括第一终端设备当前采用的副链路资源选择模式，且当前采用的副链路资源选择模式可以是上文中的mode1或mode2，当第一终端设备当前采用的副链路资源选择模式为mode2时，还可以是2a、2b、2c和2d中的任一个。
在本说明书实施例中，虽然是通过单独举例的方式对可用性信息中的第一信息、第二信息、第三信息、第四信息和第五信息的具体内容分别进行了说明，但应理解，当需要上报的可用性信息是第一信息、第二信息、第三信息、第四信息和第五信息中的多个时，可以通过组合的方式确定具体需要上报的可用性信息。
本公开实施例提供的第一终端设备400，由于第一终端设备的AS层可以向上层上报所述第一终端设备的目标接口的多种可用性信息，使得AS层向 上层上报的接口的可用性信息清楚明确，从而可以帮助第一终端设备的上层更好地进行通信接口的选择，提高了通信有效性。
如图5所示，在另一实施例中，本公开实施例提供的第一终端设备400还可以包括：可用性确定模块402。
可用性确定模块402，用于基于预设信息，确定所述目标接口的可用性；其中，所述预设信息包括第六信息、第七信息、第八信息和第九信息中的至少一种，所述第六信息包括所述第一终端设备与目标设备之间的连接信息；所述第七信息包括来自网络设备的用于确定所述目标接口的可用性的信息；所述第八信息包括所述第一终端设备的当前副链路资源选择模式信息；所述第九信息包括所述第一终端设备的无线资源控制RRC状态。
下面通过多个例子，对可用性确定模块402如何基于预设信息确定目标接口的可用性，以及上报模块401对应上报的第二信息的具体内容是什么进行说明。
首先通过下文的第一个例子至第四个例子，对基于第六信息确定PC5接口的可用性的过程，以及上报模块401对应上报的第二信息的具体内容是什么进行说明。
在第一个例子中，如果目标接口为PC5接口，所述预设信息包括所述第六信息，目标设备包括第二终端设备，且所述第一终端设备与目标设备之间的连接信息为单播连接信息，则可用性确定模块402可用于：在所述第一终端设备与至少一个所述第二终端设备之间成功建立单播连接和/或单播连接正常时，确定所述目标接口可用。
在此基础上，可选地，图4或图5所示的第一终端设备还可以包括：第一确定模块，用于在满足第一预设条件时，确定所述第一终端设备与所述目标设备之间成功建立单播连接和/或单播连接正常。
其中，所述第一预设条件包括但不限于如下至少一种：
所述第一终端设备收到所述第二终端设备发送的单播连接建立消息；
所述第一终端设备收到所述第二终端设备发送的直接通信接受信息；
所述第一终端设备收到网络设备发送的来自所述第二终端设备的单播连接建立消息；
所述第一终端设备收到网络设备发送的来自所述第二终端设备的直接通信接受信息；
所述第一终端设备与所述第二终端设备之间的单播连接正常。
一般情况下，当所述第一终端设备与所述第二终端设备之间的单播连接没有发生副链路失败，或没有出现链路切换时，即认为所述第一终端设备与所述第二终端设备之间的单播连接正常。
在第二个例子中，如果目标接口为PC5接口，所述预设信息包括所述第六信息，目标设备包括第二终端设备，且所述第一终端设备与目标设备之间的连接信息为单播连接信息，则可用性确定模块402可用于：在所述第一终端设备与至少一个所述第二终端设备之间未成功建立单播连接和/或单播连接异常时，确定所述目标接口不可用。
在此基础上，可选地，图4或图5所示的第一终端设备还可以包括：第二确定模块，用于在满足第二预设条件时，确定所述第一终端设备与所述目标设备之间未成功建立单播连接和/或单播连接异常。
其中，所述第二预设条件包括但不限于如下至少一种：
所述第一终端设备收到至少一个所述第二终端设备发送的单播连接拒绝消息；
所述第一终端设备收到网络设备发送的来自至少一个所述第二终端设备的单播连接拒绝消息；
所述第一终端设备收到至少一个所述第二终端设备发送的直接通信拒绝消息；
所述第一终端设备收到网络设备发送的来自至少一个所述第二终端设备的直接通信拒绝消息；
所述第一终端设备与至少一个所述第二终端设备之间不存在单播连接；
所述第一终端设备释放了与至少一个所述第二终端设备建立的单播连接；
所述第一终端设备收到至少一个所述第二终端设备发送的单播连接释放消息；
所述第一终端设备收到网络设备发送的来自至少一个所述第二终端设备的单播连接释放消息；
所述第一终端设备与至少一个所述第二终端设备之间的单播连接发生了链路失败；
所述第一终端设备与至少一个所述第二终端设备之间的单播连接发生了切换；
所述第一终端设备与至少一个所述第二终端设备之间的AS层参数协商失败。
可选地，在上述第一个例子和第二例子的基础上，如果上报模块401中的上报的可用性信息包括第二信息，则所述第二信息可以包括但不限于如下至少一种：适用所述目标接口的可用性的链路类型为单播链路，以及所述目标接口的可用性对应的单播链路信息。
其中，所述单播链路信息包括所述单播链路的链路ID、所述单播链路的数据承载ID、所述单播链路的控制承载ID、所述第一终端设备的ID和所述第二终端设备的ID中的至少一种。
例如，假如依据上述第一个例子确定PC5接口可用，则可用性信息中的第一信息可以包括PC5接口可用，可用性信息中的第二信息可以包括PC5接口可用适用于单播链路，以及PC5接口可用所对应的单播链路的链路信息包括单播链路的链路ID、单播链路的数据承载ID、单播链路的控制承载ID、第一终端设备的ID和第二终端设备的ID等信息。
在第三个例子中，如果目标接口为PC5接口，所述预设信息包括所述第六信息，目标设备包括至少一个第二终端设备，且所述第一终端设备与目标设备之间的连接信息为组播连接信息，则可用性确定模块402可用于：在所述第一终端设备与至少一个所述第二终端设备成功建立组播连接和/或组播连接正常时，确定所述目标接口可用。
在此基础上，可选地，图4或图5所示的第一终端设备还可以包括：第三确定模块，用于在满足第三预设条件时，确定所述第一终端设备与至少一个所述第二终端设备成功建立组播连接和/或组播连接正常。
其中，所述第三预设条件包括但不限于如下至少一种：
所述第一终端设备收到至少一个所述第二终端设备发送的组播连接建立消息；
所述第一终端设备收到至少一个所述第二终端设备发送的直接通信接受信息；
所述第一终端设备收到网络设备发送的来自至少一个所述第二终端设备的组播连接建立消息；
所述第一终端设备收到网络设备发送的来自至少一个所述第二终端设备的直接通信接受信息；
所述第一终端设备与至少一个所述第二终端设备之间的组播连接正常。
一般情况下，如果第一终端设备与至少一个所述第二终端设备没有发生副链路失败或切换，即认为第一终端与至少一个所述终端设备之间的组播连接正常。
在第四个例子中，如果目标接口为PC5接口，所述预设信息包括所述第六信息，目标设备包括至少一个第二终端设备，且所述第一终端设备与目标设备之间的连接信息为组播连接信息，则可用性确定模块402可用于：在所述第一终端设备与至少一个所述第二终端设备未成功建立组播连接和/或组播连接异常时，确定所述目标接口可用。
在此基础上，可选地，图4或图5所示的第一终端设备还可以包括：第四确定模块，用于在满足第四预设条件时，确定所述第一终端设备与至少一个所述第二终端设备未成功建立组播连接和/或组播连接异常。
其中，所述第四预设条件包括但不限于如下至少一种：
所述第一终端设备收到至少一个所述第二终端设备发送的组播连接拒绝消息；
所述第一终端设备收到网络设备发送的来自至少一个所述第二终端设备的组播连接拒绝消息；
所述第一终端设备收到至少一个所述第二终端设备发送的直接通信拒绝消息；
所述第一终端设备收到网络设备发送的来自至少一个所述第二终端设备的直接通信拒绝消息；
所述第一终端设备与至少一个所述第二终端设备之间不存在已建立的组播连接；
所述第一终端设备释放了与至少一个所述第二终端设备建立的组播连接；
所述第一终端设备收到至少一个所述第二终端设备发送的组播连接释放消息；
所述第一终端设备收到网络设备发送的来自至少一个所述第二终端设备的组播连接释放消息；
所述第一终端设备与至少一个所述第二终端设备之间的组播连接发生了链路失败；
所述第一终端设备与至少一个所述第二终端设备之间的组播连接发生了切换；
所述第一终端设备与至少一个所述第二终端设备之间的AS层参数协商失败。
可选地，在上述第三个例子和第四例子的基础上，如果上报模块401中上报的可用性信息包括第二信息，则所述第二信息中可以包括但不限于如下至少一种：适用所述目标接口的可用性的链路类型为组播链路，以及所述目标接口的可用性对应的组播链路信息。
其中，所述组播链路信息包括所述组播链路的链路ID、所述组播链路的数据承载ID、所述组播链路的控制承载ID、所述第一终端设备的ID和至少一个所述第二终端设备的ID中的至少一种。
下面通过第五个例子和第六个例子，对可用性确定模块402如何基于第六信息确定Uu接口的可用性，以及对应上报的第二信息的具体内容是什么进行说明。
在第五个例子中，如果目标接口为Uu接口，所述预设信息包括所述第六信息，目标设备包括网络设备，且所述第一终端设备与目标设备之间的连接信息为RRC连接信息，则可用性确定模块402可用于：在所述第一终端设备与所述网络设备之间成功建立RRC连接和/或RRC连接正常时，确定所述目标接口可用。
相应的，图4或图5所示的第一终端设备400还可以包括：第五确定模块，用于在满足第五预设条件时，确定所述第一终端设备与所述网络设备之间成功建立RRC连接和/或RRC连接正常。
其中，所述第五预设条件包括但不限于如下至少一种：
所述第一终端设备收到所述网络设备发送的消息4；
所述第一终端设备收到所述网络设备发送的消息B；
所述第一终端设备收到所述网络设备发送的RRC连接建立消息；
所述第一终端设备收到所述网络设备发送的寻呼(paging)消息。
在第六个例子中，如果目标接口为Uu接口，所述预设信息包括所述第六信息，目标设备包括网络设备，且所述第一终端设备与目标设备之间的连接信息为RRC连接信息，则可用性确定模块402可用于：在所述第一终端设备与所述网络设备之间未成功建立RRC连接和/或RRC连接异常时，确定所述目标接口可用。
相应的，图4或图5所示的第一终端设备400还可以包括：第六确定模块，用于在满足第五预设条件时，确定所述第一终端设备与所述网络设备之间未成功建立RRC连接和/或RRC连接异常。
其中，所述第六预设条件包括但不限于如下至少一种：
所述第一终端设备收到所述网络设备发送的RRC连接拒绝消息；
所述第一终端设备收到所述网络设备发送的小区接入控制信息；
所述第一终端设备收到所述网络设备发送的小区接入禁止信息；
所述第一终端设备收到所述网路设备发送的RRC连接释放消息；
所述第一终端设备与所述网络设备之间发生了无线链路失败；
所述第一终端设备触发了小区切换过程；
所述第一终端设备发生了波束失败；
所述第一终端设备触发了波束失败恢复过程。
可选地，在上述第五个例子和第六例子的基础上，如果上报模块401中上报的可用性信息包括第二信息，则所述第二信息具体可以包括所述第一终端设备的RRC状态信息。其中，RRC状态可以包括连接态(connected)、空闲态(idle)或非激活态(Inactive)。并且与上报第一信息类似，在具体上报时，也可以利用1bit来指示第一终端设备的RRC状态信息。
下面通过第七个例子，对可用性确定模块402基于来自网络设备的第七信息，确定Uu接口的可用性的过程进行说明。
在第七个例子中，目标接口为Uu接口，所述预设信息包括所述第七信息，且所述第七信息包括但不限于如下至少一种：来自网络设备的第一调度信息、来自网络设备的第一配置信息和来自网络设备的第二配置信息。
第一调度信息用于向所述第一终端设备调度副链路资源，且所述第一调度信息中携带用于确定所述目标接口的可用性的信息。
第一配置信息用于指示所述目标接口的可用性。
第二配置信息用于向所述第一终端设备配置副链路资源池和带宽部分(Band Width Part，BWP)中的至少一种，且所述第二配置信息中携带用于确定所述目标接口的可用性的信息。
可以理解，第一终端设备在接收到来自网络设备的第一调度信息、第一配置信息和第二配置信息之后，可以直接确定出Uu接口可用或不可用。
当然，网络设备还可以通过其他配置信息来携带用于确定所述目标接口的可用性的信息，本公开对此不做限制。
下面通过第八个例子，对可用性确定模块402基于来自网络设备的第七信息，确定PC5接口的可用性的过程进行说明。
在第八个例子中，目标接口为PC5接口，所述预设信息包括所述第七信息，且所述第七信息包括但不限于如下至少一种：来自网络设备的第二调度信息、来自网络设备的第三配置信息、来自网络设备的第四配置信息、来自网络设备的第五配置信息和来自网络设备的第六配置信息。
第二调度信息用于向所述第一终端设备调度副链路资源，且所述第二调度信息中携带用于确定所述目标接口的可用性的信息。
第三配置信息用于指示所述目标接口的可用性。
第四配置信息用于向所述第一终端设备配置预设资源，且所述第四配置信息中携带用于确定所述目标接口的可用性的信息。
可以理解，第一终端设备在接收到来自网络设备的第二调度信息、第三配置信息和第四配置信息之后，可以直接确定出PC5接口可用或不可用。
网络设备通过第二调度信息、第三配置信息和第四配置信息中的至少一个，指示PC5接口可用或不可用的方式，可以看作是一种显式的指示方式，而下面要解释的网络设备通过第五配置信息和/或第六配置信息指示PC5接 口可用或不可用的方式，由于并没有直接在配置信息中携带用于确定所述PC5接口的可用性的信息，因此可以看作是一种隐式的指示方式。
对于第五配置信息而言，在所述第五配置信息中携带用于配置预设资源的信息时，所述第五配置信息可以用于确定所述目标接口可用；在所述第五配置信息中未携带用于配置预设资源的信息时，所述第五配置信息可以用于确定所述目标接口不可用。也即，可以通过第五配置信息中是否携带配置预设资源的信息来间接的指示PC5接口可用或不可用，具体的，如果携带了，则第五配置信息可以用于指示PC5接口可用，如果未携带，则第五配置信息可以用于指示PC5接口不可用。
当然，反过来也是可行的，也即在所述第五配置信息中携带用于配置预设资源的信息时，所述第五配置信息可以用于确定所述目标接口不可用；在所述第五配置信息中未携带用于配置预设资源的信息时，所述第五配置信息可以用于确定所述目标接口可用。
所述第六配置信息用于向所述第一终端设备配置预设资源，且在所述第六配置信息配置的预设资源不能实现所述第一终端设备与第二终端设备的通信时，所述第六配置信息用于确定所述目标接口不可用，在所述第六配置信息配置的预设资源能够实现所述第一终端设备与第二终端设备的通信时，所述第六配置信息用于确定所述目标接口可用。
也即，如果第六配置信息里面携带的资源配置信息所配置的资源可以让第一终端设备和第二终端设备通信，则代表PC5接口可用。如果第六配置信息里面携带的资源配置信息所配置的资源无法让第一终端设备和第二终端设备通信，则代表PC5接口不可用。
通常情况下，当网络设备通过第六配置信息给第一终端设备配置了与第二终端设备不同的预设资源时，会导致不能实现所述第一终端设备与第二终端设备的通信。
其中，所述预设资源包括副链路资源池和BWP中的至少一种。
可以理解，第一终端设备在接收到来自网络设备的第五配置信息和第六配置信息之后，也可以确定出PC5接口可用或不可用。并且，由于第五配置信息和第六配置信息中没有增加额外的比特，因此还可以节约通信资源。
需要说明的是，第七个例子中所述的第一配置信息和第二配置信息，以及第八个例子中所述的第三配置信息至第六配置信息，可以是网络设备发送的专用信令，也可以是网络设备发送的广播消息。
还需要说明的是，第八个例子中所述的第四配置信息至第六配置信息，可以不同的配置信息，也可以是同一配置信息。
下面通过第九个例子，对可用性确定模块402基于第八信息确定目标接口的可用性的过程进行说明。
在第九个例子中，如果所述预设信息包括第八信息，则可用性确定模块402可用于：基于所述第八信息与所述目标接口的可用性的映射关系，确定所述目标接口的可用性。其中，所述第八信息包括第一终端设备的当前副链路资源选择模式。
第九个例子既可以用于确定Uu接口的可用性，也可以用于确定PC5接口的可用性。
可以理解，目标接口的可用性与第一终端设备的当前副链路资源选择模式的映射关系有很多种，此处不再举例说明。
下面通过第十个例子，对可用性确定模块402基于第九信息确定目标接口的可用性的过程进行说明。
在第十个例子中，如果所述预设信息包括第九信息，则可用性确定模块402可用于：基于所述第九信息与所述目标接口的可用性的映射关系，确定所述目标接口的可用性。
第九信息可以包括第一终端设备的RRC状态，其中，RRC状态可以包括连接态(connected)、空闲态(idle)或非激活态(Inactive)。
第十个例子既可以用于确定Uu接口的可用性，也可以用于确定PC5接口的可用性。
可以理解，目标接口的可用性与第一终端设备的RRC状态的映射关系也有很多种，此处不再举例说明。
需要说明的是，虽然上文中通过十个例子对单独基于第六信息、第七信息、第八信息和第九信息，确定目标接口的可用性做了说明，但应理解，在实际应用中，可以同时基于第六信息、第七信息、第八信息和第九信息中的 多个信息确定目标接口的可用性。
图5所示的实施例提供的第一终端设备，由于不但可以上报详细的可用性信息，还提供了确定目标接口的可用性的具体方式，因此可以解决如何确定目标接口可用性的问题。
可选地，在上述任一实施例的基础上，如果所述目标接口包括PC5，本公开提供的一种接口可用性上报方法还可以包括：向所述上层上报所述第一终端设备采用广播方式通信时所述目标接口的可用性。
需要补充说明的是，第一终端设备的AS层向上层上报的可用性信息可以是第一信息、第二信息、第三信息、第四信息和第五信息的任意组合。
上述图4至图5所示的第一终端设备400，可以用于实现上述图1至图2所示的接口可用性上报方法的各个实施例，相关之处请参考上述方法实施例。
如图6所示，本公开实施例还提供了一种网络设备600，所述网络设备600可以包括：发送模块601。
发送模块601，用于发送用于确定第一终端设备的目标接口的可用性的指示信息。
其中，目标接口包括Uu接口和PC5接口中的至少一个。目标接口的可用性包括可用或不可用。
在一个例子中，如果所述目标接口为Uu接口，则所述指示信息包括但不限于第一调度信息、第一配置信息和第二配置信息中的至少一种。
第一调度信息用于向所述第一终端设备调度副链路资源，且所述第一调度信息中携带用于确定所述目标接口的可用性的信息。
第一配置信息用于指示所述目标接口的可用性。
第二配置信息用于向所述第一终端设备配置副链路资源池和带宽部分BWP中的至少一种，且所述第二配置信息中携带用于确定所述目标接口的可用性的信息。
可以理解，第一终端设备在接收到来自网络设备的第一调度信息、第一配置信息和第二配置信息之后，可以直接确定出Uu接口可用或不可用。
在另一个例子中，如果所述目标接口为PC5接口，则所述指示信息可以包括第二调度信息、第三配置信息、第四配置信息、第五配置信息和第六配 置信息中的至少一种。
第二调度信息用于向所述第一终端设备调度副链路资源，且所述第二调度信息中携带用于确定所述目标接口的可用性的信息。
第三配置信息用于指示所述目标接口的可用性。
第四配置信息用于向所述第一终端设备配置预设资源，且所述第四配置信息中携带用于确定所述目标接口的可用性的信息。
可以理解，第一终端设备在接收到来自网络设备的第二调度信息、第三配置信息和第四配置信息之后，可以直接确定出PC5接口可用或不可用。
网络设备通过第二调度信息、第三配置信息和第四配置信息中的至少一个，指示PC5接口可用或不可用的方式，可以看作是一种显式的指示方式，而下面要解释的网络设备通过第五配置信息和/或第六配置信息指示PC5接口可用或不可用的方式，由于并没有直接在配置信息中携带用于确定所述PC5接口的可用性的信息，因此可以看作是一种隐式的指示方式。
对于第五配置信息而言，在第五配置信息中携带用于配置预设资源的信息时，所述第五配置信息可以用于确定所述目标接口可用，在所述第五配置信息中未携带用于配置预设资源的信息时，所述第五配置信息可以用于确定所述目标接口不可用。
当然，反过来也是可行的，也即在所述第五配置信息中携带用于配置预设资源的信息时，所述第五配置信息可以用于确定所述目标接口不可用；在所述第五配置信息中未携带用于配置预设资源的信息时，所述第五配置信息可以用于确定所述目标接口可用。
所述第六配置信息用于向所述第一终端设备配置预设资源，且在所述第六配置信息配置的预设资源不能实现所述第一终端设备与第二终端设备的通信时，所述第六配置信息用于确定所述目标接口不可用，在所述第六配置信息配置的预设资源能够实现所述第一终端设备与第二终端设备的通信时，所述第六配置信息用于确定所述目标接口可用。
也即，如果第六配置信息里面携带的资源配置信息所配置的资源可以让第一终端设备和第二终端设备通信，则代表PC5接口可用。如果第六配置信息里面携带的资源配置信息所配置的资源无法让第一终端设备和第二终端设 备通信，则代表PC5接口不可用。
通常情况下，当网络设备通过第六配置信息给第一终端设备配置了与第二终端设备不同的预设资源时，会导致不能实现所述第一终端设备与第二终端设备的通信。
其中，所述预设资源包括副链路资源池和BWP中的至少一种。
可以理解，第一终端设备在接收到来自网络设备的第五配置信息和第六配置信息之后，也可以确定出PC5接口可用或不可用。并且，由于第五配置信息和第六配置信息中没有增加额外的比特，因此还可以节约通信资源。
需要说明的是，上述第一配置信息至第六配置信息，可以是网络设备发送的专用信令，也可以是网络设备发送的广播消息。
还需要说明的是，第四配置信息至第六配置信息可以是同一配置信息，也可以是不同配置信息。
图6所示的实施例提供的网络设备600，由于可以向第一终端设备发送用于确定第一终端设备的目标接口的可用性的指示信息，因此可以使第一终端设备据此确定出目标接口是否可用，解决了如何确定目标接口可用性的问题。
上述图6所示的网络设备600，可以用于实现上述图3所示的接口可用性指示方法的各个实施例，相关之处请参考上述方法实施例。
图7是本公开另一个实施例的终端设备的结构示意图。图7所示的终端设备700包括：至少一个处理器701、存储器702、至少一个网络接口704和用户接口703。终端设备700中的各个组件通过总线系统705耦合在一起。可理解，总线系统705用于实现这些组件之间的连接通信。总线系统705除包括数据总线之外，还包括电源总线、控制总线和状态信号总线。但是为了清楚说明起见，在图7中将各种总线都标为总线系统705。
其中，用户接口703可以包括显示器、键盘、点击设备(例如，鼠标，轨迹球(trackball))、触感板或者触摸屏等。
可以理解，本公开实施例中的存储器702可以是易失性存储器或非易失性存储器，或可包括易失性和非易失性存储器两者。其中，非易失性存储器可以是只读存储器(Read-OnlyMemory，ROM)、可编程只读存储器 (ProgrammableROM，PROM)、可擦除可编程只读存储器(ErasablePROM，EPROM)、电可擦除可编程只读存储器(ElectricallyEPROM，EEPROM)或闪存。易失性存储器可以是随机存取存储器(RandomAccessMemory，RAM)，其用作外部高速缓存。通过示例性但不是限制性说明，许多形式的RAM可用，例如静态随机存取存储器(StaticRAM，SRAM)、动态随机存取存储器(DynamicRAM，DRAM)、同步动态随机存取存储器(SynchronousDRAM，SDRAM)、双倍数据速率同步动态随机存取存储器(DoubleDataRate SDRAM，DDRSDRAM)、增强型同步动态随机存取存储器(Enhanced SDRAM，ESDRAM)、同步连接动态随机存取存储器(Synch Link DRAM，SLDRAM)和直接内存总线随机存取存储器(DirectRambusRAM，DRRAM)。本公开实施例描述的系统和方法的存储器702旨在包括但不限于这些和任意其它适合类型的存储器。
在一些实施方式中，存储器702存储了如下的元素，可执行模块或者数据结构，或者他们的子集，或者他们的扩展集：操作系统7021和应用程序7022。
其中，操作系统7021，包含各种系统程序，例如框架层、核心库层、驱动层等，用于实现各种基础业务以及处理基于硬件的任务。应用程序7022，包含各种应用程序，例如媒体播放器(MediaPlayer)、浏览器(Browser)等，用于实现各种应用业务。实现本公开实施例方法的程序可以包含在应用程序7022中。
在本公开实施例中，终端设备700还包括：存储在存储器702上并可在处理器701上运行的计算机程序，计算机程序被处理器701执行时实现上述接口可用性上报方法的各个过程，且能达到相同的技术效果，为避免重复，这里不再赘述。
上述本公开实施例揭示的方法可以应用于处理器701中，或者由处理器701实现。处理器701可能是一种集成电路芯片，具有信号的处理能力。在实现过程中，上述方法的各步骤可以通过处理器701中的硬件的集成逻辑电路或者软件形式的指令完成。上述的处理器701可以是通用处理器、数字信号处理器(DigitalSignalProcessor，DSP)、专用集成电路 (ApplicationSpecificIntegratedCircuit，ASIC)、现成可编程门阵列(FieldProgrammableGateArray，FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件。可以实现或者执行本公开实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。结合本公开实施例所公开的方法的步骤可以直接体现为硬件译码处理器执行完成，或者用译码处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器，闪存、只读存储器，可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的计算机可读存储介质中。该计算机可读存储介质位于存储器702，处理器701读取存储器702中的信息，结合其硬件完成上述方法的步骤。具体地，该计算机可读存储介质上存储有计算机程序，计算机程序被处理器701执行时实现如上述接口可用性上报方法实施例的各步骤。
请参阅图8，图8是本公开实施例应用的网络设备的结构图，能够实现上述接口可用性指示方法的细节，并达到相同的效果。如图8所示，网络设备800包括：处理器801、收发机802、存储器803、用户接口804和总线接口，其中：
在本公开实施例中，网络设备800还包括：存储在存储器上803并可在处理器801上运行的计算机程序，计算机程序被处理器801、执行时实现上述接口可用性指示方法的各个过程，且能达到相同的技术效果，为避免重复，这里不再赘述。
在图8中，总线架构可以包括任意数量的互联的总线和桥，具体由处理器801代表的至少一个处理器和存储器803代表的存储器的各种电路链接在一起。总线架构还可以将诸如外围设备、稳压器和功率管理电路等之类的各种其他电路链接在一起，这些都是本领域所公知的，因此，本文不再对其进行进一步描述。总线接口提供接口。收发机802可以是多个元件，即包括发送机和接收机，提供用于在传输介质上与各种其他装置通信的单元。针对不同的终端设备，用户接口804还可以是能够外接内接需要设备的接口，连接的设备包括但不限于小键盘、显示器、扬声器、麦克风、操纵杆等。
处理器801负责管理总线架构和通常的处理，存储器803可以存储处理 器801在执行操作时所使用的数据。
可以理解的是，本公开实施例描述的这些实施例可以用硬件、软件、固件、中间件、微码或其组合来实现。对于硬件实现，处理单元可以实现在至少一个专用集成电路(ApplicationSpecificIntegratedCircuits，ASIC)、数字信号处理器(DigitalSignalProcessing，DSP)、数字信号处理设备(DSPDevice，DSPD)、可编程逻辑设备(ProgrammableLogicDevice，PLD)、现场可编程门阵列(Field-ProgrammableGateArray，FPGA)、通用处理器、控制器、微控制器、微处理器、用于执行本公开所述功能的其它电子单元或其组合中。
对于软件实现，可通过执行本公开实施例所述功能的模块(例如过程、函数等)来实现本公开实施例所述的技术。软件代码可存储在存储器中并通过处理器执行。存储器可以在处理器中或在处理器外部实现。
本公开实施例还提供一种计算机可读存储介质，计算机可读存储介质上存储有计算机程序，该计算机程序被处理器执行时实现上述接口可用性上报方法或者上述接口可用性指示方法实施例的各个过程，且能达到相同的技术效果，为避免重复，这里不再赘述。其中，所述的计算机可读存储介质，如只读存储器(Read-Only Memory，ROM)、随机存取存储器(Random Access Memory，RAM)、磁碟或者光盘等。
本公开实施例还提供一种包括指令的计算机程序产品，当计算机运行所述计算机程序产品的所述指令时，所述计算机执行上述接口可用性上报方法或者上述接口可用性指示方法。
本领域普通技术人员可以意识到，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，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，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公开的范围。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本公开所提供的几个实施例中，应该理解到，所揭露的系统、装置和 方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，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，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本公开各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。
所述功能如果以软件功能单元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，本公开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)执行本公开各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：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。
以上所述，仅为本公开的具体实施方式，但本公开的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本公开揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本公开的保护范围之内。因此，本公开的保护范围应所述以权利要求的保护范围为准。

Claims (26)

  1. 一种接口可用性上报方法，应用于第一终端设备，所述方法包括：
    接入AS层向上层上报所述第一终端设备的目标接口的可用性信息；
    其中，所述可用性信息包括第一信息、第二信息、第三信息、第四信息和第五信息中的至少一种，所述第一信息包括所述目标接口的可用性，所述第二信息包括适用所述目标接口的可用性的链路信息，所述第三信息包括适用所述目标接口的可用性的时间信息，所述第四信息包括适用所述目标接口的可用性的副链路资源选择模式信息，所述第五信息包括所述第一终端设备的当前副链路资源选择模式信息。
  2. 根据权利要求1所述的方法，还包括：
    基于预设信息，确定所述目标接口的可用性；
    其中，所述预设信息包括第六信息、第七信息、第八信息和第九信息中的至少一种，所述第六信息包括所述第一终端设备与目标设备之间的连接信息；所述第七信息包括来自网络设备的用于确定所述目标接口的可用性的信息；所述第八信息包括所述第一终端设备的当前副链路资源选择模式信息；所述第九信息包括所述第一终端设备的无线资源控制RRC状态。
  3. 根据权利要求2所述的方法，其中，
    所述目标接口为PC5接口，所述预设信息包括所述第六信息，所述目标设备包括第二终端设备，且所述连接信息为单播连接信息；
    其中，所述基于预设信息，确定所述目标接口的可用性，包括：在所述第一终端设备与至少一个所述第二终端设备之间成功建立单播连接和/或单播连接正常时，确定所述目标接口可用。
  4. 根据权利要求2所述的方法，其中，
    所述目标接口为PC5接口，所述预设信息包括所述第六信息，所述目标设备包括第二终端设备，且所述连接信息为单播连接信息；
    其中，所述基于预设信息，确定所述目标接口的可用性，包括：在所述第一终端设备与至少一个所述第二终端设备之间未成功建立单播连接和/或单播连接异常时，确定所述目标接口不可用。
  5. 根据权利要求3或4所述的方法，其中，
    所述第二信息包括如下至少一种：
    适用所述目标接口的可用性的链路类型为单播链路；
    所述目标接口的可用性对应的单播链路信息。
  6. 根据权利要求5所述的方法，其中，
    所述单播链路信息包括所述单播链路的链路ID、所述单播链路的数据承载ID、所述单播链路的控制承载ID、所述第一终端设备的ID和所述第二终端设备的ID中的至少一种。
  7. 根据权利要求2所述的方法，其中，
    所述目标接口为PC5接口，所述预设信息包括所述第六信息，所述目标设备包括第二终端设备，且所述连接信息为组播连接信息；
    其中，所述基于预设信息，确定所述目标接口的可用性，包括：在所述第一终端设备与至少一个所述第二终端设备成功建立组播连接和/或组播连接正常时，确定所述目标接口可用。
  8. 根据权利要求2所述的方法，其中，
    所述目标接口为PC5接口，所述预设信息包括所述第六信息，所述目标设备包括至少一个第二终端设备，且所述连接信息为组播连接信息；
    其中，所述基于预设信息，确定所述目标接口的可用性，包括：在所述第一终端设备与至少一个所述第二终端设备未成功建立组播连接和/或组播连接异常时，确定所述目标接口不可用。
  9. 根据权利要求7或8所述的方法，其中，
    所述第二信息包括如下至少一种：
    适用所述目标接口的可用性的链路类型为组播链路；
    所述目标接口的可用性对应的组播链路信息。
  10. 根据权利要求9所述的方法，其中，
    所述组播链路信息包括所述组播链路的链路ID、所述组播链路的数据承载ID、所述组播链路的控制承载ID、所述第一终端设备的ID和至少一个所述第二终端设备的ID中的至少一种。
  11. 根据权利要求2所述的方法，其中，
    所述目标接口为Uu接口，所述预设信息包括所述第六信息，所述目标设备包括网络设备，且所述连接信息为RRC连接信息；
    其中，所述基于预设信息，确定所述目标接口的可用性，包括：在所述第一终端设备与所述网络设备之间成功建立RRC连接和/或RRC连接正常时，确定所述目标接口可用。
  12. 根据权利要求2所述的方法，其中，
    所述目标接口为Uu接口，所述预设信息包括所述第六信息，所述目标设备包括网络设备，且所述连接信息为RRC连接信息；
    其中，所述基于预设信息，确定所述目标接口的可用性，包括：在所述第一终端设备与所述网络设备之间未成功建立RRC连接和/或RRC连接异常时，确定所述目标接口不可用。
  13. 根据权利要求11或12所述的方法，其中，
    所述第二信息包括所述第一终端设备的RRC状态信息。
  14. 根据权利要求2-13任一项所述的方法，其中，
    所述目标接口为Uu接口，所述预设信息包括所述第七信息，且所述第七信息包括如下至少一种：
    来自网络设备的第一调度信息，所述第一调度信息用于向所述第一终端设备调度副链路资源，且所述第一调度信息中携带用于确定所述目标接口的可用性的信息；
    来自网络设备的第一配置信息，所述第一配置信息用于指示所述目标接口的可用性；
    来自网络设备的第二配置信息，所述第二配置信息用于向所述第一终端设备配置副链路资源池和带宽部分BWP中的至少一种，且所述第二配置信息中携带用于确定所述目标接口的可用性的信息。
  15. 根据权利要求2-14任一项所述的方法，其中，
    所述目标接口为PC5接口，所述预设信息包括所述第七信息，且所述第七信息包括如下至少一种：
    来自网络设备的第二调度信息，所述第二调度信息用于向所述第一终端设备调度副链路资源，且所述第二调度信息中携带用于确定所述目标接口的 可用性的信息；
    来自网络设备的第三配置信息，所述第三配置信息用于指示所述目标接口的可用性；
    来自网络设备的第四配置信息，所述第四配置信息用于向所述第一终端设备配置预设资源，且所述第四配置信息中携带用于确定所述目标接口的可用性的信息；
    来自网络设备的第五配置信息，且在所述第五配置信息中携带用于配置预设资源的信息时，所述第五配置信息用于确定所述目标接口可用，在所述第五配置信息中未携带用于配置预设资源的信息时，所述第五配置信息用于确定所述目标接口不可用；
    来自网络设备的第六配置信息，所述第六配置信息用于向所述第一终端设备配置预设资源，且在所述第六配置信息配置的预设资源不能实现所述第一终端设备与第二终端设备的通信时，所述第六配置信息用于确定所述目标接口不可用，在所述第六配置信息配置的预设资源能够实现所述第一终端设备与第二终端设备的通信时，所述第六配置信息用于确定所述目标接口可用；
    其中，所述预设资源包括副链路资源池和带宽部分BWP中的至少一种。
  16. 根据权利要求2-15任一项所述的方法，其中，
    所述预设信息包括所述第八信息，其中，所述基于预设信息，确定所述目标接口的可用性，包括：
    基于所述第八信息与所述目标接口的可用性的映射关系，确定所述目标接口的可用性。
  17. 根据权利要求2-16任一项所述的方法，其中，
    所述预设信息包括所述第九信息，其中，所述基于预设信息，确定所述目标接口的可用性，包括：
    基于所述第九信息与所述目标接口的可用性的映射关系，确定所述目标接口的可用性。
  18. 根据权利要求1-17任一项所述的方法，其中，所述目标接口包括PC5，所述方法还包括：
    向所述上层上报所述第一终端设备采用广播方式通信时所述目标接口的 可用性。
  19. 一种接口可用性指示方法，应用于网络设备，所述方法包括：
    发送用于确定第一终端设备的目标接口的可用性的指示信息。
  20. 根据权利要求19所述的方法，其中，
    所述目标接口为Uu接口，所述指示信息包括第一调度信息、第一配置信息和第二配置信息中的至少一种；其中，
    所述第一调度信息用于向所述第一终端设备调度副链路资源，且所述第一调度信息中携带用于确定所述目标接口的可用性的信息；
    所述第一配置信息用于指示所述目标接口的可用性；
    所述第二配置信息用于向所述第一终端设备配置副链路资源池和带宽部分BWP中的至少一种，且所述第二配置信息中携带用于确定所述目标接口的可用性的信息。
  21. 根据权利要求19或20所述的方法，其中，
    所述目标接口为PC5接口，所述指示信息包括第二调度信息、第三配置信息、第四配置信息、第五配置信息和第六配置信息中的至少一种；其中，
    所述第二调度信息用于向所述第一终端设备调度副链路资源，且所述第二调度信息中携带用于确定所述目标接口的可用性的信息；
    所述第三配置信息用于指示所述目标接口的可用性；
    所述第四配置信息用于向所述第一终端设备配置预设资源，且所述第四配置信息中携带用于确定所述目标接口的可用性的信息；
    在所述第五配置信息中携带用于配置预设资源的信息时，所述第五配置信息用于确定所述目标接口可用，在所述第五配置信息中未携带用于配置预设资源的信息时，所述第五配置信息用于确定所述目标接口不可用；
    所述第六配置信息用于向所述第一终端设备配置预设资源，且在所述第六配置信息配置的预设资源不能实现所述第一终端设备与第二终端设备的通信时，所述第六配置信息用于确定所述目标接口不可用，在所述第六配置信息配置的预设资源能够实现所述第一终端设备与第二终端设备的通信时，所述第六配置信息用于确定所述目标接口可用；
    其中，所述预设资源包括副链路资源池和带宽部分BWP中的至少一种。
  22. 第一终端设备，包括：
    上报模块，用于接入AS层向上层上报所述第一终端设备的目标接口的可用性信息；
    其中，所述可用性信息包括第一信息、第二信息、第三信息、第四信息和第五信息中的至少一种，所述第一信息包括所述目标接口的可用性，所述第二信息包括适用所述目标接口的可用性的链路信息，所述第三信息包括适用所述目标接口的可用性的时间信息，所述第四信息包括适用所述目标接口的可用性的副链路资源选择模式信息，所述第五信息包括所述第一终端设备的当前副链路资源选择模式信息。
  23. 一种网络设备，包括：
    发送模块，用于发送用于确定第一终端设备的目标接口的可用性的指示信息。
  24. 一种终端设备，包括存储器、处理器及存储在所述存储器上并在所述处理器上运行的无线通信程序，所述无线通信程序被所述处理器执行时实现如权利要求1-18任一项所述的方法的步骤。
  25. 一种网络设备，包括存储器、处理器及存储在所述存储器上并在所述处理器上运行的无线通信程序，所述无线通信程序被所述处理器执行时实现如权利要求20-22任一项所述的方法的步骤。
  26. 一种计算机可读介质，所述计算机可读介质上存储有无线通信程序，所述无线通信程序被处理器执行时实现如权利要求1-22任一项所述的方法的步骤。
PCT/CN2020/072734 2019-01-18 2020-01-17 接口可用性上报、指示方法和设备 WO2020147832A1 (zh)

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