CN112153708A

CN112153708A - Communication method and related equipment

Info

Publication number: CN112153708A
Application number: CN201910582569.6A
Authority: CN
Inventors: 罗海燕; 戴明增; 曾清海
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2019-06-29
Filing date: 2019-06-29
Publication date: 2020-12-29
Also published as: WO2021000701A1

Abstract

The embodiment of the application provides a communication method and related equipment. The method comprises the following steps: the terminal device sends indication information to the node device through the first link, wherein the indication information is used for indicating a network provided by the wireless access network device to which the terminal device requests to connect. By implementing the method, the node equipment can realize the function of identifying the network provided by the wireless access network equipment which is requested to be connected by the terminal equipment of the multi-network relay equipment, so that the node equipment can further indicate the network provided by the wireless access network equipment which is requested to be connected by the terminal equipment to the wireless access network equipment, the capacity of the existing relay network can be enhanced, and the relay communication efficiency can be improved.

Description

Communication method and related equipment

Technical Field

The present application relates to the field of communications technologies, and in particular, to a relay node communication method and a related device.

Background

In one aspect, a Non-Public Network (NPN), also referred to as a private Network, is defined in the existing mechanisms. The NPN may be deployed depending on a Public Land Mobile Network (PLMN) (non-standby mode) or may be deployed independently (standby mode). For the Non-persistent one mode, one way NPN may be a slice (slice) of PLMN, i.e. NPN as a private network may be a slice of public network. Another way divides the NPN from the Radio Access Network (RAN) side into a Closed Access Group (CAG), but the CAG and the PLMN share the PLMN core network. For the standby mode, the NPN is deployed by the private network side regardless of the RAN side or the core network side. Thus, there may be a scenario where different networks coexist, such as NPN networks and PLMN networks.

On the other hand, there may be a scenario where different standards (RAT) communication systems coexist, for example, the standards of the communication systems may include: global system for mobile communications (GSM), Universal Mobile Telecommunications System (UMTS), Long Term Evolution (LTE), new radio, NR, etc.

The existing relay node technology can enable the terminal device to communicate with the wireless access network device through the relay node device. Taking a UE-to-Network relay (UE-to-Network relay) based on layer two relay as an example, when a terminal device sends user plane data or control plane data (such as an RRC message) to a radio access Network device, the terminal device may send the user plane data or control plane data to a relay node device through a wireless communication interface (such as a PC5 port) between the terminal device and the relay node device, and the relay node device may send the user plane data or control plane data of the terminal device to the radio access Network device through a wireless communication interface (such as a Uu port) between the relay node device and the radio access Network device. Correspondingly, when the radio access network device needs to send user plane data or control plane data to the terminal device, the radio access network device may also send the user plane data or control plane data to the terminal device through the relay node device. For example, in a Home Access (Home Access), a Home Access Point (HAP) node may serve as the relay node device.

However, when the relay node device itself can be connected to networks of different types or formats, the relay node device in the relay node technology cannot identify which type or format network the terminal device requests to connect to.

Disclosure of Invention

On the basis of the current relay node technology, the present application considers that the relay node device itself can be connected to different types or formats of networks provided by one or more radio access network devices, for example, UMTS and LTE can be connected simultaneously, or NPN and PLMN can be connected simultaneously. We may refer to such relay node devices as multi-network relays (multi-network relays), for example, which support both NPN and PLMN connections so that a public network UE or a private network UE can access the public or private network through the multi-network relay node; or, the multi-network relay node simultaneously supports communication systems of GSM, UMTS, LTE, NR, etc., so that the terminal device can access communication systems of different systems through the multi-network relay node.

In view of this, the present application provides a communication method and related device, by which the capability of the existing relay network can be enhanced and the efficiency of relay communication can be improved.

In a first aspect, the present application provides a communication method, which may include: the terminal equipment sends indication information to the node equipment through the first link, wherein the indication information is used for indicating a network provided by the wireless access network equipment which the terminal equipment requests to be connected with; wherein a second link exists between the node device and the radio access network device. With the present design, exemplary benefits include: the node device can identify the network provided by the wireless access network device which the terminal device requests to connect according to the indication information, so that the node device can further indicate the network provided by the wireless access network device which the terminal device requests to connect to the wireless access network device, the capacity of the existing relay network can be enhanced, and the efficiency of relay communication can be improved.

In one possible design, the indication information includes an identification of a network provided by the radio access network device to which the terminal device requests to connect.

In one possible design, the indication information is carried in a Media Access Control (MAC) layer header of the data packet of the first link.

In one possible design, the first link is a sidelink link, and the indication information is carried in Sidelink Control Information (SCI), where the sidelink is a direct wireless communication link between the terminal device and the node device.

In one possible design, the terminal device receives first information from the node device, the first information including an identification of a network that the node device supports the handover.

In one possible design, the identification of the network includes an identification of a type of the network, and/or an identification of a cell of the network.

In one possible design, the type identification of the network includes at least one of: deploying an NPN identifier independently, a closed access group CAG identifier, a public land mobile network PLMN identifier, a universal mobile telecommunications system UMTS identifier, a long term evolution LTE identifier and a new air interface NR identifier; the cell identity of the network comprises at least one of: the cell id of the NPN, the cell id of the CAG, the cell id of the PLMN, the cell id of the UMTS, the cell id of the LTE, and the cell id of the NR.

In one possible design, the radio access network device includes a first radio access network device providing a network including a first network and a second radio access network device providing a network including a second network.

In a second aspect, the present application provides a method of communication, which may include: the terminal equipment sends data to the node equipment through a first time-frequency resource of a first link, wherein the first time-frequency resource has a corresponding relation with a network provided by the wireless access network equipment which the terminal equipment requests to be connected with; wherein a second link exists between the node device and the radio access network device. With the present design, exemplary benefits include: the node equipment can identify the network provided by the wireless access network equipment which is requested to be connected by the terminal equipment according to the time-frequency resource used for receiving the data of the terminal equipment, and the terminal equipment does not need to send indication information to the node equipment, so that the node equipment can further indicate the network provided by the wireless access network equipment which is requested to be connected by the terminal equipment to the wireless access network equipment, the capacity of the existing relay network can be enhanced, and the relay communication efficiency can be improved.

In a feasible design, the terminal device receives first information from the node device, where the first information includes configuration information of the first time-frequency resource and an identifier of a network that the node device supports forwarding, and the configuration information of the first time-frequency resource and the identifier of the network that the node device supports forwarding have a corresponding relationship.

In one possible design, the first time-frequency resource location is a sidelink transmission resource pool, where the sidelink is a direct wireless communication link between the terminal device and the node device.

In one possible design, the first time-frequency resource location is a sidelink reception resource pool, where the sidelink is a direct wireless communication link between the terminal device and the node device.

In a third aspect, the present application provides a communication method, which may include: the node equipment receives indication information from the terminal equipment through a first link; the node equipment determines a network provided by the wireless access network equipment which the terminal equipment requests to connect to based on the indication information; wherein a second link exists between the node device and the radio access network device.

In one possible design, the indication information is carried in a MAC layer header of a packet of the first link.

In one possible design, the first link is a sidelink, and the indication information is carried in the SCI, where the sidelink is a direct wireless communication link between the terminal device and the node device.

In one possible embodiment, the node device sends first information to the terminal device, the first information including an identification of the network to which the node device supports the handover.

In a fourth aspect, the present application provides a communication method, which may include: the node equipment receives data from the terminal equipment through a first time-frequency resource of a first link, wherein the first time-frequency resource has a corresponding relation with a network provided by the wireless access network equipment which the terminal equipment requests to be connected with; the node equipment determines a network provided by the wireless access network equipment which the terminal equipment requests to connect according to the first time-frequency resource and the corresponding relation; wherein a second link exists between the node device and the radio access network device.

In a feasible design, the node device sends first information to the terminal device, where the first information includes configuration information of the first time-frequency resource and an identifier of a network that the node device supports handover, and the configuration information of the first time-frequency resource and the identifier of the network that the node device supports handover have a corresponding relationship.

In a fifth aspect, the present application provides a communication method, which may include: and the node equipment sends indication information to the wireless access network equipment through the second link, wherein the indication information is used for indicating the network provided by the wireless access network equipment to which the terminal equipment requests to connect. With the present design, exemplary benefits include: the wireless access network equipment can determine the network provided by the wireless access network equipment which is requested to be connected by the terminal equipment through the node equipment, so that the capacity of the existing relay network can be enhanced, and the relay communication efficiency can be improved.

In one possible design, the indication information is carried in an adaptation layer header of a packet of the second link.

In a sixth aspect, the present application provides a communication method, which may include: the wireless access network equipment receives the indication information from the node equipment through a second link; the wireless access network equipment determines the network which the terminal equipment requests to connect based on the indication information. With the present design, exemplary benefits include:

in one possible design, the indication information includes an identification of a network to which the terminal device requests to connect.

In a seventh aspect, the present application provides a communication apparatus, which may include: at least one processor and power supply circuitry for supplying power to the processor, the program instructions involved being executable in the at least one processor to cause the communication apparatus to carry out the functions of the method according to the first to sixth aspects and any of its designs, a terminal device or a node device or a radio access network device. The communication device may be the terminal device or the node device or the radio access network device or a chip thereof in the methods of the first to sixth aspects and any design thereof. Optionally, the communication device may further comprise at least one memory storing the program instructions involved.

In an eighth aspect, the present application provides a chip, which can be applied in a communication device, and the chip includes: at least one processor and power supply circuitry for supplying power to the processor, the program instructions involved being executable in the at least one processor to cause the communication apparatus to carry out the functions of the method according to the first to sixth aspects and any of its designs, a terminal device or a node device or a radio access network device. Optionally, the chip may further comprise at least one memory, the memory storing the program instructions involved.

In a ninth aspect, the present application provides a computer storage medium, which can be applied in a communication apparatus, and the computer readable storage medium stores related program instructions, and when the related program instructions are executed, the communication apparatus is enabled to implement the functions of the terminal device or the node device or the radio access network device according to the methods of the first to sixth aspects and any design thereof.

In a tenth aspect, the present application provides a computer program product comprising program instructions involved, which when executed, implement the functionality of the terminal device or node device or radio access network device according to the methods of the first to sixth aspects and any of their designs.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate exemplary embodiments, or features and aspects of the application and, together with the description, serve to explain the principles of the application, it being understood that the drawings in the following description are illustrative of only some embodiments of the application and that others may be incorporated in the practice of the invention without the use of inventive faculty.

FIGS. 1A-1B are schematic diagrams of one possible communication system of the present application;

fig. 2 is a flowchart illustrating a communication method according to an embodiment of the present application;

fig. 3 is a flowchart illustrating a communication method according to an embodiment of the present application;

fig. 4 is a flowchart illustrating a communication method according to an embodiment of the present application;

fig. 5 is a flowchart illustrating a communication method according to an embodiment of the present application;

fig. 6 is a schematic block diagram of a terminal device provided in an embodiment of the present application;

fig. 7A is a schematic block diagram of a node device provided in an embodiment of the present application;

fig. 7B is a schematic block diagram of a node device provided in an embodiment of the present application;

fig. 8 is a schematic block diagram of a radio access network device provided in an embodiment of the present application;

fig. 9 is a schematic block diagram of a communication device provided in an embodiment of the present application;

fig. 10 is a schematic block diagram of a chip provided in an embodiment of the present application.

Detailed Description

In the description of the present application, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, nor order. The "first information" and the like in the present application have information with different numbers, which are only used for contextual convenience, and the different order numbers themselves do not have a specific technical meaning, for example, the first information, the second information and the like can be understood as one or any one of a series of information. The function or role of the numbered information, for example, may be determined by the context of the numbered information and/or by the function of the information carried by the numbered information; it is understood that, in a specific implementation, the information with different numbers may also be the same or the same type of information, and the information with different numbers may also be carried in the same message or the same type of message, or the information with different numbers may also be the same message or the same type of message, which is not limited in this application.

The terms "operation 201" or "operation 202" in this application are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance of an operation or order of execution of operations.

The term "and/or" in this application is only one kind of association relationship describing the associated object, and means that there may be three kinds of relationships, for example, a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

In the present application, "at least one" means one or more, "a plurality" means two or more. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone, wherein A and B can be singular or plural. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. "at least one of the following" or similar expressions refer to any combination of these items, including any combination of the singular or plural items. For example, at least one (one) of a, b, or c, may represent: a, b, c, a-b, a-c, b-c, or a-b-c, wherein a, b, c may be single or multiple.

In the present application, "transmission" may include the following three cases: data transmission, data reception, or both. Alternatively, the data transmission herein includes uplink and/or downlink data transmission. The data may include channels and/or signals, uplink data transmission, i.e., uplink channel and/or uplink signal transmission, and downlink data transmission, i.e., downlink channel and/or downlink signal transmission.

The terms "may include" or "have" and any variations thereof herein, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

The technical solution in the present application will be described below with reference to the accompanying drawings. For example, the features or contents identified by broken lines in the drawings related to the embodiments of the present application can be understood as optional operations or optional structures of the embodiments.

The scheme provided by the embodiment of the present application is applicable to the relay node system shown in fig. 1A-1B, and the relay node system may be used to implement relay node communication between a terminal device and a radio access network device, and may be applied to various communication systems, for example: a global system for mobile communications (GSM) system, a Code Division Multiple Access (CDMA) system, a Wideband Code Division Multiple Access (WCDMA) system, a General Packet Radio Service (GPRS), a long term evolution (long term evolution, LTE) system, a LTE Frequency Division Duplex (FDD) system, a LTE Time Division Duplex (TDD) system, a universal mobile telecommunications system (universal mobile telecommunications system, UMTS), a worldwide interoperability for microwave access (UMTS) communication system, a WiMAX) communication system, or a fifth generation (5G) mobile communication system, and other new radio service (UMTS) systems are not limited to the use of the present application for mobile communication (NR) systems.

As shown in fig. 1A-1B, the relay node system may include a terminal device, a relay node device, and a radio access network device. The terminal device may be connected to the radio access network device through one or more relay node devices, the terminal device may establish a direct connection wireless communication interface (e.g., a PC5 interface) with the relay node device, and the relay node device may establish a wireless communication interface (e.g., an LTE air interface or an NR air interface) with the radio access network device. It should be noted that the network architecture shown in fig. 1A-1B is only an exemplary architecture diagram, and although not shown, the network shown in fig. 1A-1B may include other functional entities besides the network functional entities shown in fig. 1A-1B, such as: core network elements, etc., without limitation.

For example, the terminal device in fig. 1A-1B may be a user equipment, such as a remote user equipment (remote UE), that needs to be connected with the radio access network device through the relay node device. In the present application, the terminal device may generally refer to a device having a capability of communicating with a network side device, and may be, for example, a User Equipment (UE), an access terminal device, a subscriber unit, a subscriber station, a mobile station, a remote terminal device, a mobile device, a user terminal device, a wireless terminal device, a user agent, or a user equipment. The terminal device may also be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device with wireless communication function, a computing device, other processing devices connected to a wireless modem, a vehicle-mounted device, a wearable device (smart watch, smart bracelet, etc.), and may also be smart furniture (or home appliances), a terminal device in a future 5G network, a terminal device in a future evolved Public Land Mobile Network (PLMN), or a vehicle device in a vehicle networking (V2X), and the like, and the specific implementation form of the terminal device is not limited in the embodiments of the present application.

The radio access network device in fig. 1A-1B may be used to implement the functions of a radio physical entity, resource scheduling and radio resource management, radio access control, and mobility management; illustratively, the radio access network device may be a Radio Access Network (RAN) device. In the present application, the radio access network device or the radio access network device may generally refer to a device that can be used for communicating with a terminal device, such as a base station (BTS) in a GSM system or a CDMA system, a Node B (NB) in a WCDMA system, an evolved node B (eNB) in an LTE system, a radio controller in a Cloud Radio Access Network (CRAN) scenario, a relay node station, an access point, a vehicle-mounted device, a Road Side Unit (RSU), a wearable device, and a radio access network device in a future 5G network, for example, the NR nodeB, a next generation base station (gNB), an en-gNB, a Control Unit (CU), a Distributed Unit (DU), or a radio access network device in a PLMN network that is evolved in the future, and the specific implementation form of the radio access network device in the embodiment of the present application is not limited.

The relay node device in fig. 1A-1B may be a terminal device with a relay node function, or a radio access network device, or a communication node device in a network, and the node device in this application may include the relay node device, and may also include other forwarding devices.

As shown in fig. 1A, the relay node device 300 is connected to both a first cell and a second cell, where the first cell and the second cell are cells supporting different networks, and the first cell or the second cell may include at least one of the following: an NPN cell, a CAG cell, a PLMN cell, a Universal Mobile Telecommunications System (UMTS) cell, a Long Term Evolution (LTE) cell and a new air interface (NR) cell; the first cell and the second cell may be provided by the same radio access network device, or may be provided by different radio access network devices, for example, the first cell is provided by the first radio access network device 100, and the second cell is provided by the second radio access network device 200 in fig. 1A; the terminal device may be within a first cell (e.g., terminal device 400), or within a second cell (e.g., terminal device 500), or within an overlapping area of the first cell and the second cell (e.g., terminal device 600), or outside the first cell and outside the second cell (e.g., terminal device 700).

As shown in fig. 1B, the relay node apparatus 300 may only have a connection with the first cell or the second cell, and fig. 1B illustrates an example in which the relay node apparatus 300 only has a connection with the first cell; the first cell and the second cell are heterogeneous cells, and the first cell or the second cell may include at least one of: an NPN cell, a CAG cell, a PLMN cell, a Universal Mobile Telecommunications System (UMTS) cell, a Long Term Evolution (LTE) cell and a new air interface (NR) cell; the first cell and the second cell may be provided by the same radio access network device, or may be provided by different radio access network devices, and fig. 1B illustrates an example in which the first cell and the second cell are both provided by the radio access network device 100; the terminal device may be within a first cell (e.g., terminal device 400), or within a second cell (e.g., terminal device 500), or within an overlapping area of the first cell and the second cell (e.g., terminal device 600), or outside the first cell and outside the second cell (e.g., terminal device 700).

Fig. 2 is a schematic flow chart of a communication method provided in the present application, and the following specifically describes a technical solution of an embodiment of the present application with reference to fig. 2. For example, the communication method 200 corresponding to fig. 2 may include:

operation 201: the node equipment sends first information to the terminal equipment, wherein the first information comprises an identifier of a network which supports the transfer and is supported by the node equipment.

The node device may send first information to the terminal device through a broadcast message, for example, the first information may be a Master Information Block (MIB) or a System Information Block (SIB) message. Illustratively, the first information may be a SIB1 message, the SIB1 message may include information belonging to minimum system information (minimum SI) of a cell served by the radio access network device, and illustratively, the first information may belong to remaining system information (other SI) of the cell served by the radio access network device. Illustratively, the first information may be a sidelink broadcast message, such as a sidelink MasterInformationBlock-SL-V2X or a discovery message.

The first information may comprise an identification of a network to which the node device supports handover (i.e. an identification of a network provided by a radio access network device to which the node device may connect), for example an identification of a type of the network, and/or an identification of a cell of the network.

The type identifier of the network in the present application may include a system of identity (RAT) identifier of the network, for example, the type identifier of the network may include at least one of the following: NPN, CAG, PLMN, UMTS, LTE, NR. For example, the first information may directly carry the network type identifier, or the first information may carry the network type identifier and a corresponding index (index). For example NPN for 1, PLMN for 2; or UMTS for 1, LTE for 2, 5G for 3. Or may also include an index (index) corresponding to the cell identifier, for example, CAG ID corresponds to 1, and PLMN cell identifier corresponds to 2. Or the UMTS cell identification corresponds to 1, the LTE cell identification corresponds to 2 and the like.

In the present application, a "network in which a node device supports transit" may be understood as a network in which the node device itself does not provide the network, but the network may be connected through the node device. For example, the network is provided by the radio access network device, and the node device and the radio access device have a communication connection therebetween, then the node device may serve as a relay node device for the terminal device to assist the terminal device in connecting to the network, thereby achieving the purpose of "handover".

The cell identifier of the network in the present application may include at least one of: the cell identifier of the NPN, the cell identifier of the CAG, the cell identifier of the PLMN, the cell identifier of the UMTS, the cell identifier of the LTE, and the cell identifier of the NR. The cell identifier of the network may include a Physical Cell Identifier (PCI) and a global cell identifier (CGI). The first message may also include a cell identifier of the network and a corresponding index, for example, the cell identifier of the NPN corresponds to index ═ 1, and the cell identifier of the PLMN corresponds to index ═ 2; or the index corresponding to the cell identifier of UMTS is 1, the index corresponding to the cell identifier of LTE is 2, and the index corresponding to the cell identifier of NR is 3. Or the protocol provides that the network identifier or cell identifier corresponding index appearing first in the first information is 1, the second corresponding index is 2, and so on. The subsequent terminal equipment can directly report the index to the node equipment to indicate the network which is expected to be accessed, so that the report quantity and the air interface overhead of the terminal equipment are reduced.

In the present application, the terminal device "request access", "request connection", "desire access", and "desire connection" have equivalent meanings. Illustratively, the first information includes an identification of which network the node device supports handover to. For example, if the first information includes an NPN id, it indicates that the terminal device can connect to an NPN cell provided by the radio access network device through the node device.

Illustratively, taking the first information as a masterinformation block-SL-V2X message as an example, the first information may be represented as follows:

optionally, the first information may include an identifier of a network that the node device supports handover (i.e. an identifier of a network provided by the radio access network device) and a corresponding Preamble. E.g. NPN and corresponding preamble 1, PLMN and corresponding preamble 2. Or UMTS and corresponding preamble 1, LTE and corresponding preamble 2, NR and corresponding preamble 3. Or cell identity and corresponding preamble 1 for example UMTS, cell identity and corresponding preamble 2 for LTE, cell identity and corresponding preamble 3 for NR.

Operation 202: the terminal device sends indication information to the node device through the first link, wherein the indication information is used for indicating a network provided by the wireless access network device to which the terminal device requests to connect.

The indication information may be a layer 1 message, a layer 2 message, or a layer 3 message, for example, layer 1 in this application generally includes a physical layer (PHY) layer, and layer 1 message generally refers to PHY message. Layer 2 in this application generally refers to a Medium Access Control (MAC) layer, or a Radio Link Control (RLC) layer, or a Packet Data Convergence Protocol (PDCP) layer, and layer 2 messages generally refer to PDCP layer information, or RLC layer information, or MAC layer information. Layer 3 in this application refers generally to Radio Resource Control (RRC) layer, or (non-access stratum, NAS) layer signaling, and layer 3 messages refer generally to RRC layer messages, or NAS layer messages, e.g., RRC messages, NAS messages.

Optionally, the indication information may be sent to the node device together with a Radio Resource Control (RRC) message, and the node device forwards the RRC message to the radio access network device. The RRC message is used to establish a radio resource control connection between the terminal device and the radio access network device. In general, it is assumed that a terminal device sends an RRC message to a radio access network device through a node device in a first link, and the terminal device encapsulates, outside the RRC message, a header of a protocol layer supported by the first link, for example, when the first link is a Uu port, the terminal device encapsulates, outside the RRC message, a header of a Uu port protocol layer supported by the first link, for example, the terminal device encapsulates, outside the RRC message, an RLC header, an MAC header, and a PHY header of the Uu port. When the first link is the PC5 port, the terminal device encapsulates the header of the protocol layer of the PC5 port supported by the first link outside the RRC message, for example, the terminal device encapsulates the RLC header, the MAC header, and the PHY header of the PC5 port outside the RRC message. I.e. the RRC message can be regarded as the load of the first link, we can refer to the encapsulated RRC message as the first data. The terminal device then transmits the first data to the node device via the first link.

The first link can be a PC5 port link or a Uu port link. Generally, in a vehicle to event (V2X) or inter-device communication D2D scenario, a communication link for performing direct communication between a terminal device and another terminal device may be referred to as a Sidelink (SL). Since the SL interface may be referred to as a PC5 port, the SL may be referred to as a PC5 port link. The wireless communication link between the terminal device and the network device may be referred to as an Uplink (UL) or a Downlink (DL), and since the UL or DL interface may be referred to as a Uu port, the UL or DL may be referred to as a Uu port link.

Optionally, the indication information may include an identification of a network provided by the radio access network device to which the terminal device requests to connect.

Optionally, when the first information includes the identifier of the network provided by the radio access network device and a corresponding preamble, the indication information may include the preamble corresponding to the network provided by the radio access network device selected by the terminal device. After the node device receives the preamble, the identifier of the network provided by the radio access network device that the terminal device desires to access may be determined according to the correspondence between the preamble and the network provided by the radio access network device.

Optionally, the first link is a sidelink link or a PC5 port link, and the indication information may be carried in Sidelink Control Information (SCI). Before the terminal device sends the data (e.g., the first data), the terminal device sends an SCI to indicate information related to the first data, such as retransmission or new transmission indication, Modulation and Coding Scheme (MCS), priority, and the like. I.e., SCI and first data are transmitted by a time division method. The SCI and the first data may also be transmitted by a frequency division method, i.e., simultaneously. The terminal device may carry the above indication information in the SCI, that is, the SCI includes the network provided by the radio access network device that the terminal device wishes to access. The indication information may be transmitted together with the first data or may be transmitted separately.

Optionally, the first link is a sidelink or a PC5 port link, and the indication information may be carried in a MAC layer header of the first link, for example, included in a MAC header or a MAC subheader. The indication information may be transmitted together with the first data or may be transmitted separately.

The network provided by the wireless access network device can be an NPN, CAG, PLMN, UMTS, LTE, NR, and can also be an NPN cell, a CAG cell, a PLMN cell, a UMTS cell, an LTE cell, an NR cell.

In this application, the radio access network device providing the network may include a plurality of radio access network devices, for example, a first radio access network device providing a PLMN cell and a second radio access network device providing an NPN cell. For example, a first radio access network device providing a UMTS cell, a second radio access network device providing an LTE cell, and a third radio access network device providing an NR cell. Of course, the radio access network device providing the network may also comprise only one radio access network device, for example the radio access network device may provide a PLMN cell and a CAG cell. For example, the radio access network device may provide an LTE cell and an NR cell.

Operation 203: and the node equipment determines the network provided by the wireless access network equipment to which the terminal equipment requests to connect according to the indication information.

Operation 203 is an optional operation, for example, if the node device only supports one network, and if the node device only has a communication connection with one network of the radio access network device, the node device may directly transfer the terminal device to the network provided by the radio access network device to which the terminal device requests connection, and at this time, the node device may also determine the network provided by the radio access network device to which the terminal device requests connection according to the indication information, and then perform operation 204.

Operation 204: and the node equipment sends indication information to the wireless access network equipment through the second link, wherein the indication information is used for indicating the network provided by the wireless access network equipment to which the terminal equipment requests to connect.

Illustratively, the node device sends the forwarded indication information to the radio access network device through a second link, where the second link may be a Uu port link, and the indication information may be carried in an adaptation layer header of a packet of the second link, and the packet may include the forwarded indication information.

For example, the node device and the network provided by the radio access network device to which the terminal device requests connection may or may not have a communication connection therebetween.

Operation 204 is an optional operation, for example, if the node device and the radio access network side are in a dual connectivity scenario, for example, the node device and multiple different networks of multiple radio access network devices have communication connections or multiple different networks of one radio access network device have communication connections, the node device may directly send data from the terminal device to the corresponding connected networks, without sending indication information to the radio access network side.

By the method of the embodiment, the node device can identify the network provided by the radio access network device which the terminal device requests to connect according to the indication information sent by the terminal device, so that the node device can further indicate the network provided by the radio access network device which the terminal device requests to connect to the radio access network device, and after the radio access network device determines the network provided by the radio access network device which the terminal device requests to connect, the network and the terminal device can be further used for communication connection, thereby enhancing the capability of the existing relay network and improving the efficiency of relay communication.

Fig. 3 is a schematic flowchart of a communication method provided in the present application, and the following describes a technical solution of an embodiment of the present application in detail with reference to fig. 3. Illustratively, the communication method 300 corresponding to fig. 3 may include:

operation 301: the node device sends first information to the terminal device, where the first information includes configuration information of the first time-frequency resource and an identifier of a network that the node device supports forwarding, and the configuration information of the first time-frequency resource and the identifier of the network that the node device supports forwarding have a corresponding relationship.

The configuration information of the first time-frequency Resource may include a Resource Block (RB) position, a starting frame number, a starting subframe number, a starting symbol number, a repetition period, and the like.

Optionally, the first Information may be carried in a System Information Block (SIB) message, or may be carried in a discovery (discovery) message of a sidelink of the node device. The first information may also be proprietary information, for example, RRC messages of the first link (i.e. Uu port RRC messages or SL RRC messages), such as RRC reconfiguration messages.

The first time-frequency resource may be one of multiple time-frequency resources, each of the multiple time-frequency resources corresponds to a network identifier, the first information may include configuration information of the first time-frequency resource and an identifier of a network to which the node device supports handover, and may also include configuration information of other time-frequency resources in the multiple time-frequency resources and an identifier of a network to which the node device supports handover, for example, the first information may include a configuration information list and a network identifier list of the time-frequency resources, and for example, a structure of the first information may be as shown in table 1 below:

table 1:

for example, the correspondence between the configuration information of the time-frequency resource included in the first information and the identifier of the network supporting the transit by the node device may be as shown in table 2 below:

table 2:

it should be noted that table 2 only shows a correspondence between one possible time-frequency resource and an identifier of a network that the node device supports forwarding, and the correspondence is not limited to the form shown in table 2, and the application does not limit this. Illustratively, when the node device and the terminal device both store the contents as described in table 2, the first information may be in the form of a bit string (bit string) or a bitmap (bit map) to indicate the corresponding relationship, for example, "000" is used to indicate row 1 in table 2, … …, and "111" is used to indicate row 8 in table 2 or table 2. With the present design, exemplary benefits include: this allows flexible configuration of the content included in the first information or overhead of control signaling.

(1) The configuration information of the first time-frequency resource may be configuration information of an SL resource pool, and the time-frequency resource of the SL resource pool has a corresponding relationship with an identifier of a network that the node device supports switching. For example, in a communication coverage of the node device, the terminal device serving as a data sending end may obtain SL communication resources from a master SL resource pool and a slave SL resource pool to send a control signal and a data signal to the node device serving as a data receiving end; or, for example, the terminal device as a data sending end autonomously obtains the SL communication resource from a preconfigured SL resource pool to send the control signal and/or the data signal to the node device as a data receiving end outside the communication coverage of the node device. Illustratively, the end devices may perceive or contend for SL transmission resources. Optionally, the terminal device sends the control signal by contending with another terminal device to obtain the appropriate SL communication resource in the SL resource pool, and/or the data signal, for example, the higher the priority of the V2X service to be transmitted in the terminal device is, the greater the chance that the terminal device contends for the appropriate SL communication resource in the SL resource pool is. Optionally, the terminal device may also pre-store the SL resource pool information, or the node device pre-configures the SL resource pool when the terminal device accesses the node device.

(2) The configuration information of the first time-frequency resource may be configuration information of a certain type of time-frequency resource, and the type of the time-frequency resource has a corresponding relationship with an identifier of a network that the node device supports switching. Illustratively, the time-frequency resource may include a dynamic grant and a configuration grant. The dynamic authorization is characterized in that the network device needs to allocate resources individually for each data transmission of the terminal device, and the method is characterized by "one-time allocation and one-time use", for example, the network device may dynamically allocate edge link transmission resources to the terminal device through Downlink Control Information (DCI), where the DCI may be carried by a physical downlink control channel. The configuration grant may be that each data transmission of the terminal device does not always require the network device to allocate resources individually, and after the network device allocates resources for the terminal device at a certain time, the terminal device may use the allocated resources for a period of time in the future, and is characterized by "one-time allocation and multiple-time usage", for example, the configuration grant may include type1 configuration grant (SL configured grant type-1), type2 configuration grant (SL configured grant type-2), grant-free (SL grant), and semi-Persistent Scheduling (SLs-Persistent Scheduling, SL SPS). the type1 configuration grant or grant free may be an edge link configuration grant that the network device directly configures to the terminal device through Radio Resource Control (RRC) signaling, and the terminal device may directly use the configuration grant resource to transmit data without additional activation (e.g., activation through PDCCH/DCI). the type2 configuration grant or semi-persistent scheduling may be that the network device defines a period of the configuration grant through RRC signaling, and activates the configuration grant through PDCCH/DCI, so that the terminal device cannot directly use the configuration grant resource to transmit data and can use the data after activation. The main difference between dynamic and configuration grants is the grant, i.e. the flexibility of resource allocation and the overhead of resource allocation. Dynamic authorization, wherein the network needs to allocate authorization for each data transmission of the terminal equipment, and the resource allocation is flexible, but the resource allocation overhead is large; configuration authorization and one-time authorization allocation of network equipment, the terminal can be used for multiple times, the resource allocation cost is low, however, the allocated resources are not changed or adjusted within a long time, and the resource allocation is not flexible. The dynamic authorization is allocated by using a Physical Channel (such as a PDCCH, Physical Downlink Control Channel, or Physical Downlink Control Channel), and the allocation is relatively quick; the configuration grant is configured using higher layer signaling (such as RRC signaling) or higher layer signaling (such as RRC signaling) plus a physical channel (such as PDCCH), and resource allocation is slow.

Operation 302: the node device receives information from the terminal device through a first time-frequency resource of a first link, wherein the first time-frequency resource has a corresponding relation with a network provided by a wireless access network device which the terminal device requests to connect.

The first link may be a sidelink or a PC5 port link, or a Uu port link, and the information may be control signaling and/or traffic data.

Operation 303: and the node equipment determines the network provided by the wireless access network equipment which the terminal equipment requests to connect according to the first time-frequency resource and the corresponding relation.

Operation 303 is an optional operation, for example, if the node device only supports one network, and if the node device only has a communication connection with one network of the radio access network device, the node device may directly transfer the terminal device to the network provided by the radio access network device to which the terminal device requests connection, and at this time, the node device may also determine the network provided by the radio access network device to which the terminal device requests connection according to the indication information, and then perform operation 304.

Operation 304: and the node equipment sends indication information to the wireless access network equipment through the second link, wherein the indication information is used for indicating the network provided by the wireless access network equipment to which the terminal equipment requests to connect.

The second link may be a Uu port link, and the indication information may be carried in an adaptation layer (Adapt) header of a packet of the second link. For example, the node device receives first data sent by the terminal device through the first link, and obtains the RRC message after removing the RLC header, the MAC header, the PHY header, and the like of the first link encapsulated outside the RRC message. Then the node device encapsulates the adaptation layer header, the RLC header, the MAC header, and the PHY header of the second link outside the RRC message, and we refer to the encapsulated data as second data. And the node equipment sends second data to the wireless access network equipment through a second link, wherein the second data comprises indication information. The indication information may be contained in an adaptation layer header or an RLC header or a MAC header or a PHY header of the second link. The indication information may include the network provided by the radio access network device to which the terminal device requests to connect, such as the type of network, or the type of network and the cell identifier of the network. The indication information may be transmitted together with the second data or may be transmitted separately.

Operation 304 is an optional operation, for example, if the node device and the radio access network side are in a dual connectivity scenario, for example, the node device and multiple different networks of multiple radio access network devices have communication connections therebetween or multiple different networks of one radio access network device have communication connections therebetween, the node device may send data from the terminal device directly to the corresponding connected networks, without sending indication information to the radio access network side.

By the method of the embodiment, the node device can identify the network provided by the radio access network device which the terminal device requests to connect according to the time-frequency resource used for receiving the data of the terminal device, so that the node device can further indicate the network provided by the radio access network device which the terminal device requests to connect to the radio access network device, and after the radio access network device determines the network provided by the radio access network device which the terminal device requests to connect, the network and the terminal device can be further used for communication connection, thereby enhancing the capacity of the existing relay network and improving the efficiency of relay communication.

Fig. 4 is a schematic flowchart of a communication method provided in the present application, and the following describes a technical solution of an embodiment of the present application in detail with reference to fig. 4. For example, the communication method 400 corresponding to fig. 4 may include:

operation 401: and the terminal equipment sends the indication information to the wireless access network equipment through the node equipment.

The terminal device can send indication information to the wireless access network device through the node device, wherein the indication information is used for indicating the network requested or expected to be accessed by the terminal device. The indication information may include various identifications of the network requesting or desiring access, such as a network identification, a cell identification, an internal identification, and the like. Or, when different networks coexist in different Network slices (slices), for example, the node device informs the terminal device in advance of the networks supported by the radio access Network device, and corresponding Network Slice identifiers, the indication Information sent by the terminal device to the node device may include a Network Slice identifier, for example, (S-NSSAI).

The indication information may be in the form of a layer 1 message, a layer 2 message, or a layer 3 message, and for example, taking the indication information as an RRC establishment request (RRCSetupRequest) message as an example, the indication information may be represented as follows:

the indication information may also be a radio resource control message such as an RRC recovery request (RRCResumeRequest) message, an RRC reestablishment request (rrcreestablshmentirequest), or the like. The terminal device sends the encapsulated indication message to the node device through the first link, where the specific encapsulation manner may refer to the first data in operation 304, which is not described herein any more, and the indication information sent to the node device may be referred to as encapsulated indication information.

Operation 402: and the node equipment sends the forwarded indication information to the radio access network equipment through the second link, wherein the indication information is used for indicating the network provided by the radio access network equipment which the terminal equipment requests to connect.

After receiving the encapsulated indication information, the node device may directly transmit the encapsulated indication information in a transparent manner without analyzing the encapsulated indication information, or may analyze the encapsulated indication information, convert the encapsulated indication information into an appropriate form, and forward the indication information to the radio access network device through the second link, where the indication information forwarded by the node device may be referred to as forwarded indication information. The first link can be a Uu port or PC5 port link, and the second link can also be a Uu port or PC5 port link.

In operation 403: the wireless access network equipment determines the network which the terminal equipment wants to access according to the indication message.

Illustratively, the radio access network device determines the network that the terminal device wants to access according to the identifier included in the indication information.

By the method of the embodiment, the terminal device can directly send the indication information to the radio access network device through the node device, so that the radio access network device can directly identify the network provided by the radio access network device which the terminal device requests to connect, and after the radio access network device determines the network provided by the radio access network device which the terminal device requests to connect, the network and the terminal device can be further used for communication connection, thereby enhancing the capability of the existing relay network and improving the efficiency of relay communication.

Fig. 5 is a schematic flowchart of a communication method provided in the present application, and the following describes a technical solution of an embodiment of the present application in detail with reference to fig. 5. Illustratively, the communication method 500 corresponding to fig. 5 may include:

operation 501: the node equipment sends first information to the terminal equipment, wherein the first information comprises an identifier of a network which supports the transfer and is supported by the node equipment. The operation may refer to operation 201, and may include optional operations of operation 201, which are not described herein again.

Operation 502: the terminal device determines that the identifier of the network provided by the wireless access network device which the terminal device requests to access exists in the identifiers of the networks which the node device supports the transfer.

For example, the terminal device determines that a network provided by the radio access network device to which the terminal device requests to access exists in the network to which the node device supports the handover, and the terminal device selects the node device as a target device for initial access, or cell reselection, or cell handover.

When the UE moves, it may need to reselect the relay node device (relay). In general, the criteria for relay reselection may be:

the method comprises the following steps: the signal strength of the current relay (i.e. the signal strength of the relay transmission received by the current UE, such as Reference Signal Received Power (RSRP) of the relay) is lower than the threshold 1, and the signal strength of the new relay is higher than the threshold 2;

the method 2 comprises the following steps: the signal strength of the new relay is higher than the threshold 2;

illustratively, considering the case of multi-network relay, the criteria for relay reselection may be changed to:

the method 3 comprises the following steps: the signal strength of the current relay (i.e. the signal strength of the relay transmission received by the current UE) is lower than the threshold 1, the new relay not only needs to support the network that the UE wants to access, but also the signal strength of the new relay is higher than the threshold 2;

the method 4 comprises the following steps: the new relay supports the network that the UE hopes to access, and the signal intensity of the new relay is higher than the threshold 2;

for an example of the above method, in addition to adding a new requirement for the node device to support the network provided by the radio access network device for switching the access requested by the terminal device, a standard still needed for selecting a new relay may refer to a selection standard of a target device in initial access, cell reselection, or cell handover in the prior art, which is not described herein again.

By the method of the embodiment, when the terminal device selects a new node device, the node device can support the network provided by the wireless access network device which is switched to the terminal device to request access, so that the capability of the existing relay network can be enhanced, and the efficiency of relay communication can be improved.

Based on the similar technical concepts, the present application provides a terminal device or a node device or a radio access network device, where the terminal device or the node device or the radio access network device may be the terminal device or the node device or the radio access network device in all the communication methods provided by the foregoing embodiment methods and any possible design thereof, and the terminal device or the node device or the radio access network device may include at least one corresponding unit for executing the method steps or operations or behaviors performed by the terminal device or the node device or the radio access network device in all the communication methods provided by the foregoing embodiment methods. The setting of the at least one unit may have a one-to-one correspondence relationship with method steps or operations or behaviors performed by the terminal device or the node device or the radio access network device.

Illustratively, the structure and function of the terminal device 600 will be specifically described below with reference to fig. 6 in the embodiment of the present application, and fig. 6 is a schematic block diagram of the terminal device 600 provided in the embodiment of the present application.

Illustratively, the present application provides a terminal device 600, which may include: a sending module 601, configured to send, to a node device through a first link, indication information, where the indication information is used to indicate a network provided by a radio access network device to which the terminal device requests to connect; wherein a second link exists between the node device and the radio access network device.

Optionally, the indication information includes an identifier of a network provided by the radio access network device to which the terminal device 600 requests to connect.

Optionally, the indication information is carried in a MAC layer header of the data packet of the first link.

Optionally, the first link is a sidelink, and the indication information is carried in the SCI, where the sidelink is a direct-connection wireless communication link between the terminal device and the node device.

Optionally, the terminal device 600 may further include an obtaining module 602, configured to receive first information from the node device, where the first information includes an identifier of a network that the node device supports forwarding.

Optionally, the identifier of the network includes a type identifier of the network, and/or a cell identifier of the network.

Optionally, the type identifier of the network includes at least one of: deploying an NPN identifier independently, a closed access group CAG identifier, a public land mobile network PLMN identifier, a universal mobile telecommunications system UMTS identifier, a long term evolution LTE identifier and a new air interface NR identifier; the cell identity of the network comprises at least one of: the cell id of the NPN, the cell id of the CAG, the cell id of the PLMN, the cell id of the UMTS, the cell id of the LTE, and the cell id of the NR.

Optionally, the radio access network device includes a first radio access network device and a second radio access network device, the network provided by the first radio access network device includes a first network, and the network provided by the second radio access network device includes a second network.

Illustratively, the present application provides a terminal device 600, which may include: a sending module 601, configured to send data to a node device through a first time-frequency resource of a first link, where the first time-frequency resource has a corresponding relationship with a network provided by a radio access network device to which the terminal device 600 requests connection; wherein a second link exists between the node device and the radio access network device.

Optionally, the terminal device 600 may further include an obtaining module 602, configured to receive first information from the node device, where the first information includes configuration information of the first time-frequency resource and an identifier of a network that the node device supports forwarding, and the configuration information of the first time-frequency resource and the identifier of the network that the node device supports forwarding have a corresponding relationship.

Optionally, the first time-frequency resource location is a sidelink sending resource pool and/or a receiving resource pool, where the sidelink is a direct connection wireless communication link between the terminal device and the node device.

For example, the structure and function of the node device 700A will be specifically described below with reference to fig. 7A in an embodiment of the present application, and fig. 7 is a schematic block diagram of the node device 700A provided in the embodiment of the present application.

Illustratively, the present application provides a node device 700A, which may include: an obtaining module 701A, configured to receive indication information from a terminal device through a first link; a processing module 702A, configured to determine, based on the indication information, a network provided by the radio access network device to which the terminal device requests to connect; wherein a second link exists between the node device 700A and the radio access network device.

Optionally, the indication information includes an identifier of a network provided by the radio access network device to which the terminal device requests to connect.

Optionally, the node device 700A may further include a sending module 703A, configured to send first information to the terminal device, where the first information includes an identifier of a network that the node device supports forwarding.

Illustratively, the present application provides a node device 700A, which may include: an obtaining module 701A, configured to receive data from a terminal device through a first time-frequency resource of a first link, where the first time-frequency resource has a corresponding relationship with a network provided by a radio access network device to which the terminal device requests connection; a processing module 702A, configured to determine, according to the first time-frequency resource and the corresponding relationship, a network provided by the radio access network device to which the terminal device requests to connect; wherein a second link exists between the node device 700 and the radio access network device.

Optionally, the node device 700A may further include a sending module 703A, configured to send first information to the terminal device, where the first information includes configuration information of the first time-frequency resource and an identifier of a network that the node device supports forwarding, and the configuration information of the first time-frequency resource and the identifier of the network that the node device 700A supports forwarding have a corresponding relationship.

Illustratively, the present application provides a node device 700B, which may include: a sending module 701B, configured to send, to the radio access network device through the second link, indication information, where the indication information is used to indicate a network provided by the radio access network device to which the terminal device requests to connect.

Optionally, the indication information is carried in an adaptation layer header of a packet of the second link.

Illustratively, the structure and function of the radio access network device 800 will be described in detail below with reference to fig. 8 in the embodiments of the present application, and fig. 8 is a schematic block diagram of the radio access network device 800 provided in the embodiments of the present application.

Illustratively, the present application provides a radio access network device 800, which may include: an obtaining module 801, configured to receive indication information from a node device through a second link; a processing module 802, configured to determine, based on the indication information, a network to which the terminal device requests to connect.

Optionally, the indication information includes an identifier of a network to which the terminal device requests to connect.

Optionally, the radio access network device 800 includes a first radio access network device and a second radio access network device, the network provided by the first radio access network device includes a first network, and the network provided by the second radio access network device includes a second network.

It should be noted that, these module units of the above embodiments may be implemented by a computer program, may also be implemented by a hardware circuit, and may also be implemented by a computer program in combination with a hardware circuit. For example, the receiving module and the transmitting module may be implemented by one transceiver, or an interface circuit, or a transceiver, or the receiving module may be implemented by a separate receiver, the transmitting module may be implemented by a separate receiver, and the processing module may be implemented by a processor having a data processing function.

Based on the same technical concept, the embodiment of the present application further provides a communication apparatus 900, which may be used to implement the functions executed by any terminal device, any node device, or any radio access network device in the foregoing method embodiments. The structure and function of the communication apparatus 900 will be described in detail with reference to fig. 9 in the embodiment of the present application, and fig. 9 is a schematic block diagram of the communication apparatus 900 provided in the embodiment of the present application. The communication apparatus may comprise at least one processor 901 and power supply circuitry 905, and when the program instructions involved are executed in the at least one processor 901, the communication apparatus 900 may be caused to implement the communication method provided by the methods 200 to 800 and the functions of the terminal device or the node device or the radio access network device in any design thereof. The power supply circuit 905 may be used to power the processor 901. Alternatively, the power supply circuit 905 may be located in the same chip as the processor 901, or in another chip other than the chip where the processor 901 is located. Optionally, the communications apparatus 900 may also include at least one memory 902, where the memory 902 may be used to store desired related program instructions, and/or data. Optionally, the communication apparatus 900 may further include a transceiver 903, where the transceiver 903 may be used for the communication apparatus 900 to perform communication interaction with other communication devices (such as radio access network devices or terminal devices, which is not limited herein), such as interaction control signaling, and/or service data, and the transceiver 903 may be implemented by a circuit having a communication transceiving function. Optionally, as shown in fig. 9, the communication device 900 may further include a bus 904, and various portions of the communication device 900 may be interconnected by the bus 904.

Based on the same technical concept, the embodiment of the present application provides a chip 1000. The structure and function of the chip 1000 will be described in detail with reference to fig. 10 in the embodiment of the present application, and fig. 10 is a schematic block diagram of the chip 1000 provided in the embodiment of the present application. The chip 1000 may be applied to any terminal device, any node device, or any radio access network device, and the processing of the chip enables the terminal device, the node device, or the radio access network device to perform the operations of the communication method provided by the methods 200 to 700 in the embodiments of the present application and the terminal device, the node device, or the radio access network device in any possible design thereof. As shown in fig. 10, the chip 1000 may include at least one processor 1001 and a power supply circuit 1005, and when the program instructions involved are executed in the at least one processor 1001, the operations of the terminal device or the node device or the radio access network device in the communication method provided by the embodiments 200 to 700 of the present application and any possible design thereof are implemented. The power supply circuit 1005 may be used to supply power to the processor 1001. Alternatively, the power supply circuit 1005 may be located on the same chip as the processor 1001, or on another chip than the chip on which the processor 1001 is located. Optionally, the chip 1000 may further include at least one memory 1002, where the memory 1002 stores related program instructions. Optionally, the chip 1000 may further include an interface circuit 1003 and a bus 1004; the at least one processor 1001, the at least one memory 1002, and the interface circuit 1003 are coupled via the bus 1004; the chip 1000 interacts with a terminal device or a node device or a radio access network device or other devices in a network through the interface circuit 1003; alternatively, the processor 1001 and the memory 1002 may be combined into one processing device. For example, in particular implementations, the memory 1002 may be integrated with the processor 1001 or may be separate from the processor 1001.

It should be understood that the processor in the embodiments of the present application may be a Central Processing Unit (CPU), and the processor may also be other general-purpose processors, Digital Signal Processors (DSPs), Application Specific Integrated Circuits (ASICs), Field Programmable Gate Arrays (FPGAs) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, and the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

It will also be appreciated that the memory in the embodiments of the subject application can be either volatile memory or nonvolatile memory, or can include both volatile and nonvolatile memory. The non-volatile memory may be a read-only memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an electrically Erasable EPROM (EEPROM), or a flash memory. Volatile memory can be Random Access Memory (RAM), which acts as external cache memory. By way of example, but not limitation, many forms of Random Access Memory (RAM) are available, such as Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), Enhanced SDRAM (ESDRAM), synchlink DRAM (SLDRAM), and direct bus RAM (DR RAM).

The power supply circuit according to the embodiment of the present application includes, but is not limited to, at least one of the following: the power supply system comprises a power supply subsystem, an electric tube management chip, a power consumption management processor or a power consumption management control circuit.

The transceiver, or the interface circuit, or the transceiver according to the embodiments of the present application may include a separate transmitter and/or a separate receiver, or may be an integrated body of the transmitter and the receiver. The transceiver means, interface circuit or transceivers may operate under the direction of a corresponding processor. Alternatively, the sender may correspond to a transmitter in the physical device, and the receiver may correspond to a receiver in the physical device.

It will be clear to those skilled in the art that, for convenience and simplicity of description, the foregoing division of the functional modules is merely used as an example, and in practical applications, the above function distribution may be performed by different functional modules according to needs, that is, the internal structure of the device is divided into different functional modules to perform all or part of the above described functions. For the specific working processes of the system, the apparatus and the unit described above, reference may be made to the corresponding processes in the foregoing method embodiments, and details are not described here again.

In the embodiments of the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the module or unit is only one logical division, and there may be other divisions when actually implemented, for example, a plurality of units or components may be combined or may be integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.

In the embodiment of the present application, units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may also be distributed on multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiments of the present application.

In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.

The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solutions of the present application may be substantially implemented or contributed by the prior art, or all or part of the technical solutions may be embodied in a software product, which is stored in a storage medium and may include instructions for causing a computer device, such as a personal computer, a server, or a radio access network device, to execute all or part of the operations of the method according to the embodiments of the present application, or a processor (processor). And the aforementioned storage medium may include: a U-disk, a removable hard disk, a read-only memory (ROM), a Random Access Memory (RAM), a magnetic or optical disk, or other various media or computer storage media capable of storing program codes.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application.

Claims

1. A method of communication, comprising:

the method comprises the steps that terminal equipment sends indication information to node equipment through a first link, wherein the indication information is used for indicating a network provided by wireless access network equipment which the terminal equipment requests to be connected with;

wherein a second link exists between the node device and the radio access network device.

2. The method of claim 1, wherein the indication information includes an identification of a network provided by the radio access network device to which the terminal device requests to connect.

3. The method according to claim 1 or 2, wherein the indication information is carried in a medium access control, MAC, layer header of a data packet of the first link.

4. The method according to claim 1 or 2, wherein the first link is a sidelink, and the indication information is carried in sidelink control information SCI, wherein the sidelink is a direct wireless communication link between the terminal device and the node device.

5. The method according to any one of claims 1-4, comprising:

and the terminal equipment receives first information from the node equipment, wherein the first information comprises an identifier of a network which supports the transfer and is received by the node equipment.

6. A method of communication, comprising:

the method comprises the steps that a terminal device sends data to a node device through a first time-frequency resource of a first link, wherein the first time-frequency resource has a corresponding relation with a network provided by a wireless access network device which the terminal device requests to be connected with;

7. The method of claim 6, comprising:

the terminal device receives first information from the node device, where the first information includes configuration information of the first time-frequency resource and an identifier of a network that the node device supports forwarding, and the configuration information of the first time-frequency resource and the identifier of the network that the node device supports forwarding have a corresponding relationship.

8. The method of claim 6 or 7, wherein the first time/frequency resource location is a sidelink transmission resource pool, and wherein the sidelink is a direct wireless communication link between the terminal device and the node device.

9. A method of communication, comprising:

the node equipment receives indication information from the terminal equipment through a first link;

the node equipment determines a network provided by the wireless access network equipment which the terminal equipment requests to connect to based on the indication information;

10. The method of claim 9, wherein the indication information includes an identification of a network provided by the radio access network device to which the terminal device requests to connect.

11. The method according to claim 9 or 10, wherein the indication information is carried in a medium access control, MAC, layer header of a data packet of the first link.

12. The method according to claim 9 or 10, wherein the first link is a sidelink, and the indication information is carried in sidelink control information SCI, wherein the sidelink is a direct wireless communication link between the terminal device and the node device.

13. The method according to any one of claims 9-12, comprising:

and the node equipment sends first information to the terminal equipment, wherein the first information comprises an identifier of a network which supports the transfer and is supported by the node equipment.

14. A method of communication, comprising:

the node equipment receives data from terminal equipment through a first time-frequency resource of a first link, wherein the first time-frequency resource has a corresponding relation with a network provided by wireless access network equipment which the terminal equipment requests to be connected with;

the node equipment determines a network provided by the wireless access network equipment which the terminal equipment requests to connect according to the first time-frequency resource and the corresponding relation;

15. The method of claim 14, comprising:

the node device sends first information to the terminal device, where the first information includes configuration information of the first time-frequency resource and an identifier of a network that the node device supports forwarding, and the configuration information of the first time-frequency resource and the identifier of the network that the node device supports forwarding have a corresponding relationship.

16. The method of claim 14 or 15, wherein the first time/frequency resource location is a sidelink transmission resource pool, and wherein the sidelink is a direct wireless communication link between the terminal device and the node device.

17. A method of communication, comprising:

and the node equipment sends indication information to the wireless access network equipment through the second link, wherein the indication information is used for indicating the network provided by the wireless access network equipment to which the terminal equipment requests to connect.

18. The method of claim 17, wherein the indication information includes an identification of a network provided by the radio access network device to which the terminal device requests to connect.

19. The method according to claim 17 or 18, wherein the indication information is carried in an adaptation layer header of a data packet of the second link.

20. A method of communication, comprising:

the wireless access network equipment receives the indication information from the node equipment through a second link;

and the wireless access network equipment determines the network which the terminal equipment requests to connect based on the indication information.

21. The method according to claim 20, wherein the indication information includes an identifier of a network to which the terminal device requests to connect.

22. The method according to claim 20 or 21, wherein the indication information is carried in an adaptation layer header of a data packet of the second link.

23. The method according to any of claims 1-22, wherein the identity of the network comprises a type identity of the network, and/or a cell identity of the network.

24. The method of claim 23,

the type identification of the network comprises at least one of: deploying an NPN identifier independently, a closed access group CAG identifier, a public land mobile network PLMN identifier, a universal mobile telecommunications system UMTS identifier, a long term evolution LTE identifier and a new air interface NR identifier;

the cell identity of the network comprises at least one of: a cell id of the NPN, a cell id of the CAG, a cell id of the PLMN, a cell id of the UMTS, a cell id of the LTE, and a cell id of the NR.

25. The method according to any one of claims 1-24, comprising: the wireless access network equipment comprises first wireless access network equipment and second wireless access network equipment, the network provided by the first wireless access network equipment comprises a first network, and the network provided by the second wireless access network equipment comprises a second network.

26. A communications apparatus, comprising: at least one processor and power supply circuitry for supplying power to the processor, the program instructions involved being executable in the at least one processor to cause the communication apparatus to carry out the functions of the terminal device, or the node device, or the radio access network device according to any of the methods of claims 1-25.

27. A computer storage medium having stored thereon program instructions related thereto which when executed perform the functions of the terminal device, or the node device, or the radio access network device according to any of claims 1-25.

28. A computer program product comprising program instructions involved, which when executed, implement the functionality of the terminal device, or the node device, or the radio access network device in the method according to any one of claims 1-25.