Terminal connection method and device

Abstract

The invention discloses a terminal connection method and device. The method comprises the following steps: receiving a first message sent by a first terminal; forwarding the first message to a third terminal; receiving a second message sent by the third terminal, wherein the second message is generated by the third terminal for the first terminal according to the first message; and forwarding the second message to the first terminal.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of communication technology, in particular to a terminal connection method and device. BACKGROUND

[0002] The method for realizing remote terminal connection through a relay terminal is to realize relay connection based on L2-ID (Layer 2 Identity document), that is, different end-to-end links are assigned different L2-ID, and the method for realizing remote terminal connection through a relay terminal does not consider the control of an access network, and is a scheme of establishing a link completely based on a terminal device autonomous manner.

[0003] Therefore, in the method for realizing remote terminal connection through a relay terminal, since the relay terminal assigns different L2-ID to different end-to-end links, the number of RLC (Radio Link Control) entities supported by the relay terminal increases with the number of end-to-end links, and the complexity is high. When the terminal device is in the coverage of an access network, the routing establishment cannot be optimized from a global perspective through the control of the access network, and therefore there is a technical problem of high complexity of the terminal connection process and poor optimization configuration. SUMMARY

[0004] The present application provides a method and device for optimizing the technical problem of terminal connection.

[0005] The embodiment of the present application provides a terminal connection method, applied to a first terminal, and comprising the following steps: sending a first message to a second terminal, the first message being forwarded to a third terminal by the second terminal; receiving a second message forwarded by the second terminal, the second message being generated by the third terminal for the first terminal according to the first message; establishing connection with the third terminal according to the second message.

[0006] The embodiment of the present application provides a terminal connection method, applied to a second terminal, and comprising the following steps: receiving a first message sent by a first terminal; forwarding the first message to a third terminal; receiving a second message sent by the third terminal, the second message being generated by the third terminal for the first terminal according to the first message; forwarding the second message to the first terminal.

[0007] The embodiment of the present application provides a terminal connection method, applied to a third terminal, and comprising the following steps: receiving a first message forwarded by a second terminal; According to the first message, the second message is generated for the first terminal; The second message is sent to the second terminal; The connection established by the first terminal according to the second message is accepted.

[0008] The embodiment of the present application provides a terminal connection device, which comprises: The first sending module is used for sending the first message to the second terminal, and the first message is forwarded to the third terminal by the second terminal; The first receiving module is used for receiving the second message forwarded by the second terminal, and the second message is generated for the first terminal by the third terminal according to the first message; The first connection module is used for establishing the connection with the third terminal according to the second message.

[0009] The embodiment of the present application provides a terminal connection device, which comprises: The second receiving module is used for receiving the first message sent by the first terminal; The second sending module is used for forwarding the first message to the third terminal; The second receiving module is also used for receiving the second message sent by the third terminal, and the second message is generated for the first terminal by the third terminal according to the first message; The second sending module is also used for forwarding the second message to the first terminal.

[0010] The embodiment of the present application provides a terminal connection device, which comprises: The third receiving module is used for receiving the first message forwarded by the second terminal; The generating module is used for generating the second message for the first terminal according to the first message; The third sending module is used for sending the second message to the second terminal; The third connection module is used for accepting the connection established by the first terminal according to the second message.

[0011] The embodiment of the present application provides a terminal device, which comprises a processor, a memory, a transmission program stored on the memory and executable on the processor, and the processor implements any one of the terminal connection methods when executing the program.

[0012] The embodiment of the present application provides a computer readable storage medium, which stores a computer program, and the computer program is executed to implement any one of the terminal connection methods.

[0013] The embodiment of the present application provides a computer program product, which is stored in a non-transient computer readable storage medium, and the computer program is executed to implement any one of the terminal connection methods.

[0014] The chip includes a processor configured to call and run a computer program from a memory, and a device installed with the chip is configured to perform any of the terminal connection methods.

[0015] The computer program is configured to implement any of the terminal connection methods when executed.

[0016] The technical solutions provided by the embodiments of the present application can have the following beneficial effects. The first message is forwarded by the second terminal to the third terminal, and the second message is received, which is generated by the third terminal according to the first message for the first terminal; and the connection with the third terminal is established according to the second message. Thus, the first terminal establishes the connection with the third terminal according to the second message, and the connection of the first terminal and the third terminal is optimized.

[0017] It should be understood that the foregoing general description and the following detailed description are only examples, and cannot limit the present application. BRIEF DESCRIPTION OF DRAWINGS

[0018] The accompanying drawings incorporated in and forming a part of the specification, illustrate the embodiments consistent with the present application and, together with the description, serve to explain the principles of the application.

[0019] Figure 1 is a network architecture diagram of a communication system to which the embodiments of the present application can be applied; Figure 2 is a flowchart of a terminal connection method according to the first embodiment of the present application; Figure 3 is a block diagram of a terminal connection device according to the second embodiment of the present application; Figure 4 is a block diagram of a terminal connection device according to the third embodiment of the present application; Figure 5 is a block diagram of a terminal connection device according to the fourth embodiment of the present application; Figure 6 is a hardware structure diagram of a terminal connection device according to the fifth embodiment of the present application. DETAILED DESCRIPTION

[0020] Detailed description of exemplary embodiments will now be made with reference to the drawings, in which example embodiments are illustrated. The following description is made with reference to the accompanying drawings in which like reference numerals represent like elements or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Instead, they are merely examples consistent with some aspects of the present application as detailed in the appended claims. Based on the description of the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0021] In the system architecture, the example communication system can be a Global System of Mobile communication (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 (LTE) system, an LTE Frequency Division Duplex (FDD) system, an LTE Time Division Duplex (TDD) system, an Advanced long term evolution (LTE-A) system, a New Radio (NR) system, an evolved system of the NR system, an LTE-based access to unlicensed spectrum (LTE-U) system, a New Radio based access to unlicensed spectrum (NR-U) system, a Universal Mobile Telecommunication System (UMTS), a Worldwide Interoperability for Microwave Access (WiMAX) communication system, a Wireless Local Area Networks (WLAN), a Wireless Fidelity (WiFi), a next generation communication system, or other communication systems, etc.

[0022] Generally, a conventional communication system supports a limited number of connections and is easy to implement. However, with the development of communication technology, a mobile communication system will support not only conventional communication but also, for example, Proximity-based Service (ProSe), Device to Device (D2D) communication, Machine to Machine (M2M) communication, Machine Type Communication (MTC), Vehicle to Vehicle (V2V) communication, and Vehicle to X (V2X), and the like. Embodiments of the present application can also be applied to these communication systems.

[0023] The user terminal involved in the embodiments of the present application can include various handheld devices, vehicle-mounted devices, wearable devices, computing devices, or other processing devices connected to a wireless modem, and various forms of User Equipment (UE), Mobile Station (MS), terminal device, and the like, which have a communication function. For the convenience of description, the devices mentioned above are collectively referred to as terminal devices.

[0024] In addition, the terms "system" and "network" are often used interchangeably herein. The term "and / or", only describes the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B, which can represent the following three cases: A exists alone, A and B exist together, and B exists alone. In addition, the character " / " in this paper generally represents that the associated objects before and after are an "or" relationship.

[0025] It should be understood that in the embodiments of the present application, "B corresponding to A" means that B is associated with A, and B can be determined according to A. However, it should also be understood that the determination of B according to A does not mean that B is determined only according to A, but B can also be determined according to A and / or other information.

[0026] Figure 1 The system architecture of the communication system that can be applied in the following embodiments of the present application. The system architecture includes a source terminal A, a relay terminal B, and a destination terminal C.

[0027] Remote UEs, including source UE A and destination UE C, are connected to each other through one or more relay UEs B. The remote UEs and the relay UEs B or the relay UEs B are connected through a PC5 interface of a 3GPP (3rd Generation Partnership Project) system. In a method for realizing remote UE connection of the source UE A and the destination UE C through the relay UEs B, in steps 102 and 103, a direct communication request (DCR) message is forwarded through the relay UEs B, and the relay UEs B insert a relay identifier into the DCR message and forward it. In the forwarding process, the relay UEs B assign independent L2 (Layer 2) identity numbers or L2 addresses, i.e., L2-IDs, to different source UEs A for data forwarding. The L2 layer is a Data Link Layer, and the functions supported by the L2 layer include, but are not limited to, a MAC layer (Medium Access Control Layer), an RLC layer (Radio Link Control Layer), a PDCP layer (Packet Data Convergence Protocol Layer), a scheduling function, an automatic repeat request (ARQ) function, RLC protocol data unit (PDU) division and connection functions, and the like.

[0028] In step 104, the destination UE C receives the DCR message forwarded by the relay UE B, starts an authentication and security process, and in this process, the destination UE C uses the L2-ID assigned by the relay UE B. The relay UE B forwards the authentication and security related messages to the source UE A. In the forwarding process, the relay UE B assigns independent L2-IDs to different destination UEs C for data forwarding. Subsequent communication is relayed through the independent L2 addresses assigned by the relay UE B to the source UE A and the destination UE C.

[0029] However, in the method for realizing the connection of the remote terminal through the relay terminal, the relay is realized based on the L2-ID replacement, and since the relay terminal assigns different L2-IDs to different end-to-end links, when there are multiple end-to-end links, the number of RLC (Radio Link Control) entities supported by the relay terminal increases with the number of end-to-end links, and the complexity is high. When the terminal device is in the coverage of the access network, the routing establishment cannot be optimized from a global perspective through the control of the access network, and therefore, there are technical problems of high complexity of the process of terminal connection and poor optimization configuration.

[0030] The following specific embodiments of the present application will describe in detail how to realize the connection of the terminal and realize the optimization of the connection of the terminal.

[0031] As shown in the flowchart of the terminal connection method provided by the specific embodiment of the present application, the method comprises the following steps: Figure 2 Step 110, a single-hop link is established between the first terminal and the second terminal, and / or between the second terminal and the third terminal.

[0032] Optionally, the establishment of the single-hop link comprises: establishing a wireless bearer for relay.

[0033] Optionally, the wireless bearer comprises: a unicast signaling bearer and / or a broadcast signaling bearer.

[0034] Step 120, the first terminal sends a first message to the second terminal.

[0035] Optionally, the first terminal can send the first message to the nearby second terminal, and the nearby second terminal comprises a terminal device that can establish a single-hop link with the first terminal.

[0036] Optionally, the first message comprises a direct communication request message DCR (direct communication request) message.

[0037] Optionally, the direct communication request message comprises relay indication information.

[0038] Optionally, the relay indication information is used to indicate whether the direct communication request DCR message can be relayed, and / or the number of times the direct communication request DCR message can be relayed.

[0039] Step 130, the second terminal determines whether to forward the first message to the third terminal according to the first parameter.

[0040] ​The second terminal judges whether the first message can be relayed according to the first parameter after receiving the first message, and forwards the first message to the third terminal when it is judged that the first message can be relayed. Optionally, the first parameter comprises at least one of the following: a channel quality related parameter; a service related parameter; and identity information of the first terminal and / or the third terminal. The channel quality related parameter can comprise an RSRP (Reference Signal Receiving Power) parameter, a CBR (Channel busy ratio) parameter, an SINR (Signal to Interference plus Noise Ratio) parameter and an RSSI (Received Signal Strength Indicator) parameter.

[0041] In step 140, the second terminal forwards the first message to the third terminal.

[0042] Optionally, the step 140 can comprise the following steps: When the second terminal forwards the first message to the third terminal, the second terminal sends the indication information of the identity information of the first terminal to the third terminal.

[0043] When the second terminal forwards the first message to the third terminal, the second terminal can send the indication information of the identity information of the first terminal to the third terminal at the same time. The indication information of the identity information of the first terminal is not included in the first message.

[0044] Optionally, the first message comprises the indication information of the identity information of the first terminal.

[0045] When the second terminal forwards the first message to the third terminal, the first message can comprise the indication information of the identity information of the first terminal.

[0046] Optionally, the indication information of the identity information of the first terminal comprises a data link layer identity number of the first terminal.

[0047] The indication information can be a data link layer identity number of the first terminal, i.e. a layer 2 identity number or a layer 2 address L2-ID. The data link layer identity number of the first terminal can be a data link layer identity number of the first terminal in the relay protocol layer, so that the L2-ID of the first terminal and the L2-ID of the third terminal can interact in the relay protocol layer, and the second terminal can reuse the RLC entity to realize relay communication of multiple end-to-end links.

[0048] Optionally, after the step 140, the terminal connection method can comprise the following steps: A single-hop link is established between the second terminal and the third terminal.

[0049] If a single-hop link between the second terminal and the third terminal has not been established after the second terminal forwards the first message to the third terminal, a single-hop link between the second terminal and the third terminal is established.

[0050] In step 150, the third terminal sends a second message to the second terminal.

[0051] The third terminal receives the first message forwarded by the second terminal, and judges whether a connection with the first terminal can be established. When the third terminal judges that a connection with the first terminal can be established, the third terminal generates the second message for the first terminal according to the first message, and then sends the second message to the second terminal. The second message includes an authentication message, and / or a security message, and / or a direct communication accept (DCA) message.

[0052] In step 160, the second terminal judges whether to forward the second message to the first terminal according to the second parameter.

[0053] After receiving the second message, the second terminal judges whether the second message can be relayed according to the second parameter, and forwards the second message to the first terminal when it is judged that the second message can be relayed. The second parameter includes at least one of the following: a channel quality related parameter; a service related parameter; and identity information of the first terminal and / or the third terminal. The channel quality related parameter can include an RSRP (Reference Signal Receiving Power) parameter, a CBR (Channel busy ratio) parameter, an SINR (Signal to Interference plus Noise Ratio) parameter, and an RSSI (Received Signal Strength Indicator) parameter.

[0054] In step 170, the second terminal forwards the second message to the first terminal.

[0055] Optionally, the step 170 can include the following steps: When the second terminal forwards the second message, the second terminal sends indication information of the identity information of the third terminal to the first terminal.

[0056] The second terminal can send the indication information of the identity information of the third terminal to the first terminal at the same time when the second terminal forwards the second message to the first terminal. The indication information of the identity information of the third terminal is not included in the second message.

[0057] Optionally, the second message includes the indication information of the identity information of the third terminal.

[0058] The second message can comprise indication information of the third terminal identity information when the second terminal forwards the second message to the first terminal.

[0059] Optionally, the indication information of the third terminal identity information comprises a data link layer identity number of the third terminal.

[0060] The indication information can be a data link layer identity number of the third terminal, i.e., a layer 2 identity number or a layer 2 address L2-ID. The data link layer identity number of the third terminal can be a data link layer identity number of the third terminal at the relay protocol layer, so as to facilitate the L2-ID of the first terminal and the third terminal to interact at the relay protocol layer, and facilitate the second terminal to reuse the RLC entity to implement relay communication of multiple end-to-end links.

[0061] Optionally, after step 170, the terminal connection method can comprise the following steps: A single-hop link is established between the first terminal and the second terminal.

[0062] If the single-hop link between the first terminal and the second terminal has not been established after the second terminal forwards the second message to the first terminal, a single-hop link is established between the first terminal and the second terminal.

[0063] In step 180, the first terminal determines whether to establish a connection with the third terminal according to the third parameter, and / or determines a routing selection for establishing a connection with the third terminal according to the third parameter.

[0064] After the first terminal receives the third parameter, the first terminal determines whether to establish a connection with the third terminal according to the third parameter, and / or the first terminal determines a routing selection for establishing a connection with the third terminal according to the third parameter. When it is determined that a connection with the third terminal can be established, the first terminal establishes a connection with the third terminal. Optionally, the third parameter comprises at least one of the following: a channel quality related parameter; a service related parameter; identity information of the first terminal and / or the third terminal. The channel quality related parameter can comprise an RSRP (Reference Signal Receiving Power) parameter, a CBR (Channel busy ratio) parameter, an SINR (Signal to Interference plus Noise Ratio) parameter, and an RSSI (Received Signal Strength Indicator) parameter.

[0065] In step 190, a connection with the third terminal is established according to the second message.

[0066] The first terminal establishes a connection with the third terminal according to the second message, and the first terminal and the third terminal perform relay communication of signaling and / or data, establish a link, and perform communication. During the communication, the L2-ID of the opposite terminal device is used at the relay protocol layer, so that the relay signaling / data is transmitted to the opposite terminal device through the second terminal.

[0067] Optionally, the first parameter and / or the second parameter and / or the third parameter are configured by an access network and / or a core network and / or preconfigured.

[0068] For the first parameter, the second parameter, and the third parameter configured by the access network and the core network, the configuration can be preconfigured by the access network and the core network, or the configuration can be triggered by the terminal device reporting to the access network and the core network and then configured by the access network and the core network. The first parameter, the second parameter, and the third parameter configured by the access network and the core network can be transmitted through a relay protocol and / or sidelink signaling, and the sidelink signaling includes PC5-S signaling. The first parameter, the second parameter, and the third parameter preconfigured can be pre-stored in the corresponding terminal device.

[0069] Optionally, the first message and / or the second message and / or the indication information of the first terminal identity information and / or the indication information of the third terminal identity information are transmitted through a relay protocol and / or sidelink signaling.

[0070] The first message, the second message, the indication information of the first terminal identity information, and the indication information of the third terminal identity information can be transmitted through a relay protocol, and more specifically, the relay protocol can predefine related parameters of a broadcast signaling bearer used for relay, or the indication information of the first terminal identity information and the indication information of the third terminal identity information can be transmitted through sidelink signaling, and the sidelink signaling includes PC5-S signaling.

[0071] The first terminal to the third terminal L2-ID interaction in the link establishment process is used to perform relay communication at the relay protocol layer, so that different first terminal to third terminal links can communicate through the L2-ID of the first terminal and the third terminal, without allocating different L2-ID for each link, thereby facilitating the relay terminal, i.e., the second terminal, to reuse the RLC entity to serve multiple end-to-end links. The first terminal to the third terminal L2-ID interaction can be implemented at the relay protocol layer, or can be implemented through the transmission of sidelink signaling, including PC5-S signaling. Network signaling of the access network and / or the core network is introduced in the link establishment process, and relay communication under network control is realized.

[0072] Figure 3 is a block diagram of a terminal connection device provided by the second embodiment of the present application. As shown in Figure 3As shown, the apparatus is a first terminal, which can include but is not limited to a first sending module 210, a first receiving module 230 and a first connecting module 250.

[0073] The first sending module 210 is configured to send a first message to a second terminal, and the first message is forwarded to a third terminal by the second terminal. The first receiving module 230 is configured to receive a second message forwarded by the second terminal, and the second message is generated by the third terminal for the first terminal according to the first message. The first connecting module 250 is configured to establish a connection with the third terminal according to the second message.

[0074] Optionally, the first sending module 210 is specifically configured to: The first message is determined by the second terminal to be forwarded to the third terminal according to a first parameter.

[0075] Optionally, the first parameter includes at least one of the following: a channel quality related parameter; a service related parameter; identity information of the first terminal and / or the third terminal.

[0076] Optionally, the first sending module 210 is further configured to: When the second terminal forwards the first message, the first sending module 210 is configured to send indication information of the identity information of the first terminal to the third terminal.

[0077] Optionally, the first message includes the indication information of the identity information of the first terminal.

[0078] Optionally, the indication information of the identity information of the first terminal includes a data link layer identity number of the first terminal.

[0079] Optionally, the first receiving module 230 is specifically configured to: Receive the second message forwarded by the second terminal to the first terminal according to a second parameter.

[0080] Optionally, the second parameter includes at least one of the following: a channel quality related parameter; a service related parameter; identity information of the first terminal and / or the third terminal.

[0081] Optionally, the first receiving module 230 is further configured to: When the second terminal forwards the second message, the first receiving module 230 is configured to receive indication information of identity information of the third terminal sent by the second terminal to the first terminal.

[0082] Optionally, the second message includes the indication information of the identity information of the third terminal.

[0083] Optionally, the indication information of the identity information of the third terminal includes a data link layer identity number of the third terminal.

[0084] Optionally, the apparatus further includes: The first determining module is configured to determine, by the first terminal, to establish a connection with the third terminal according to the third parameter, and / or to determine a routing selection for establishing the connection with the third terminal according to the third parameter.

[0085] Optionally, the third parameter comprises at least one of the following: a channel quality related parameter; a service related parameter; identity information of the first terminal and / or the third terminal.

[0086] Optionally, the first connection module 250 is further configured to: establish a single-hop link between the first terminal and the second terminal, and / or between the second terminal and the third terminal.

[0087] Optionally, the first connection module 250 is further configured to: establish a single-hop link between the second terminal and the third terminal.

[0088] Optionally, the first connection module 250 is further configured to: establish a single-hop link between the first terminal and the second terminal.

[0089] Optionally, establishing the single-hop link comprises establishing a radio bearer for relaying.

[0090] Optionally, the radio bearer comprises a unicast signaling bearer and / or a broadcast signaling bearer.

[0091] Optionally, the first parameter and / or the second parameter and / or the third parameter are configured by an access network and / or a core network and / or pre-configured.

[0092] Optionally, the first message and / or the second message and / or the indication information of the first terminal identity information and / or the indication information of the third terminal identity information are transmitted through a relay protocol and / or sidelink signaling.

[0093] Optionally, the first message comprises a direct communication request message.

[0094] Optionally, the second message comprises an authentication message, and / or a security message, and / or a direct communication acceptance message.

[0095] Optionally, the direct communication request message comprises relay indication information.

[0096] Optionally, the relay indication information is used to indicate whether the direct communication request message can be relayed, and / or the number of times the direct communication request message can be relayed.

[0097] The implementation process of the functions and roles of the various modules in the embodiment and other parts not elaborated or defined in detail are described in detail in the above-mentioned embodiment one, and will not be repeated here.

[0098] Figure 4 is a block diagram of a terminal connection apparatus provided by the third embodiment of the present application. As shown in Figure 4 the apparatus is a second terminal, which can include but is not limited to a second receiving module 310 and a second sending module 330.

[0099] The second receiving module 310 is configured to receive a first message sent by a first terminal. The second sending module 330 is configured to forward the first message to a third terminal. The second receiving module 310 is further configured to receive a second message sent by the third terminal, the second message being generated by the third terminal according to the first message and for the first terminal. The second sending module 330 is further configured to forward the second message to the first terminal.

[0100] Optionally, the apparatus further includes: A second determining module 350, configured to determine, by the second terminal, a first parameter for forwarding the first message to the third terminal.

[0101] Optionally, the first parameter includes at least one of the following: a channel quality related parameter; a service related parameter; identity information of the first terminal and / or the third terminal.

[0102] Optionally, the second sending module 330 is further configured to: When the second terminal forwards the first message, send, to the third terminal, indication information of the identity information of the first terminal.

[0103] Optionally, the first message includes the indication information of the identity information of the first terminal.

[0104] Optionally, the indication information of the identity information of the first terminal includes a data link layer identity number of the first terminal.

[0105] Optionally, the second determining module 350 is further configured to: Determine, by the second terminal, a second parameter for forwarding the second message to the first terminal.

[0106] Optionally, the second parameter includes at least one of the following: a channel quality related parameter; a service related parameter; identity information of the first terminal and / or the third terminal.

[0107] Optionally, the second sending module 330 is further configured to: When the second terminal forwards the second message, send, to the first terminal, indication information of identity information of the third terminal.

[0108] Optionally, the second message includes the indication information of the identity information of the third terminal.

[0109] Optionally, the indication information of the third terminal identity information comprises a data link layer identity number of the third terminal.

[0110] Optionally, the second determining module 350 is further configured to: The first terminal determines, according to the third parameter, to establish a connection with the third terminal, and / or determines, according to the third parameter, a routing selection for establishing a connection with the third terminal.

[0111] Optionally, the third parameter comprises at least one of the following: a channel quality related parameter; a service related parameter; identity information of the first terminal and / or the third terminal.

[0112] Optionally, the apparatus further comprises: A second connection module 370, configured to establish a single-hop link between the first terminal and the second terminal, and / or between the second terminal and the third terminal.

[0113] Optionally, the second connection module 370 is further configured to: Establish a single-hop link between the second terminal and the third terminal.

[0114] Optionally, the second connection module 370 is further configured to: Establish a single-hop link between the first terminal and the second terminal.

[0115] Optionally, establishing a single-hop link comprises establishing a radio bearer for relaying.

[0116] Optionally, the radio bearer comprises a unicast signaling bearer and / or a broadcast signaling bearer.

[0117] Optionally, the first parameter and / or the second parameter and / or the third parameter are configured by an access network and / or configured by a core network and / or pre-configured.

[0118] Optionally, the first message and / or the second message and / or the indication information of the first terminal identity information and / or the indication information of the third terminal identity information are transmitted through a relay protocol and / or sidelink signaling.

[0119] Optionally, the first message comprises a direct communication request message.

[0120] Optionally, the second message comprises an authentication message, and / or a security message, and / or a direct communication acceptance message.

[0121] Optionally, the direct communication request message comprises relay indication information.

[0122] Optionally, the relay indication information is used to indicate whether the direct communication request message can be relayed, and / or to indicate a number of times that the direct communication request message can be relayed.

[0123] The implementation process of the functions and roles of each module in the embodiment and other parts not described or defined in detail are described in Embodiment One above, and will not be described here.

[0124] Figure 5 is a block diagram of a terminal connection device provided by Embodiment Four of the present application. As shown in the figure, the device is a third terminal, which can include but is not limited to a third receiving module 410, a generating module 430, a third sending module 450, and a third connection module 470. Figure 5

[0125] The third receiving module 410 is configured to receive the first message forwarded by the second terminal. The generating module 430 is configured to generate a second message for the first terminal according to the first message. The third sending module 450 is configured to send the second message to the second terminal. The third connection module 470 is configured to accept the connection established by the first terminal according to the second message.

[0126] Optionally, the third receiving module 410 is specifically configured to: receive the first message forwarded by the second terminal according to the first parameter.

[0127] Optionally, the first parameter includes at least one of the following: a channel quality related parameter; a service related parameter; identity information of the first terminal and / or the third terminal.

[0128] Optionally, the third receiving module 410 is further configured to: receive the indication information of the identity information of the first terminal sent by the third terminal when the second terminal forwards the first message.

[0129] Optionally, the first message includes the indication information of the identity information of the first terminal.

[0130] Optionally, the indication information of the identity information of the first terminal includes a data link layer identity number of the first terminal.

[0131] Optionally, the device further includes: A third determining module 490 is configured to determine, by the second terminal, to forward the second message to the first terminal according to a second parameter.

[0132] Optionally, the second parameter includes at least one of the following: a channel quality related parameter; a service related parameter; identity information of the first terminal and / or the third terminal.

[0133] Optionally, the third sending module 450 is further configured to: send the indication information of the identity information of the third terminal to the first terminal when the second terminal forwards the second message. ​

[0134] Optionally, the second message comprises: indication information of the third terminal identity information.

[0135] Optionally, the indication information of the third terminal identity information comprises: a data link layer identity number of the third terminal.

[0136] Optionally, the third connection module 470 is specifically configured to: accept the connection established by the first terminal according to the third parameter, and / or accept the route selection of the connection established by the first terminal according to the third parameter.

[0137] Optionally, the third parameter comprises at least one of the following: a channel quality related parameter; a service related parameter; identity information of the first terminal and / or the third terminal.

[0138] Optionally, the third connection module 470 is further configured to: establish a single-hop link between the first terminal and the second terminal, and / or between the second terminal and the third terminal.

[0139] Optionally, the third connection module 470 is further configured to: establish a single-hop link between the second terminal and the third terminal.

[0140] Optionally, the third connection module 470 is further configured to: establish a single-hop link between the first terminal and the second terminal.

[0141] Optionally, establishing a single-hop link comprises: establishing a wireless bearer for relaying.

[0142] Optionally, the wireless bearer comprises: a unicast signaling bearer and / or a broadcast signaling bearer.

[0143] Optionally, the first parameter and / or the second parameter and / or the third parameter are configured by an access network and / or a core network and / or pre-configured.

[0144] Optionally, the first message and / or the second message and / or the indication information of the first terminal identity information and / or the indication information of the third terminal identity information are transmitted through a relay protocol and / or sidelink signaling.

[0145] Optionally, the first message comprises: a direct communication request message.

[0146] Optionally, the second message comprises: an authentication message, and / or a security message, and / or a direct communication acceptance message.

[0147] Optionally, the direct communication request message comprises: relay indication information.

[0148] Optionally, the relay indication information is used to indicate whether the direct communication request message can be relayed, and / or the number of times the direct communication request message can be relayed.

[0149] The implementation process of the functions and roles of each module in the embodiment and other parts not described or defined in detail are described in the above embodiment one, and will not be described here.

[0150] Figure 6 Figure 1 is a schematic diagram of a hardware structure of a terminal connection device according to the fifth embodiment of the application. As shown in the figure, the device comprises a processor 510 and a memory 520, and the above-mentioned components of the device are communicatively connected to each other through a bus system. Figure 6

[0151] The memory 520 stores programs executable on the processor 510, and the processor 510 implements some or all steps of the terminal connection method in the above method embodiment one when executing the programs.

[0152] The processor 510 can also be a separate component, or a collective term for multiple processing components. For example, it can be a CPU, an ASIC, or one or more integrated circuits configured to implement the above method, such as at least one microprocessor DSP, or at least one programmable gate array FPGA, etc.

[0153] ​Those skilled in the art should clearly understand that, in one or more examples described above, the functions described in the detailed description of the present application can be implemented entirely or partially by software, hardware, firmware, or any combination thereof. When implemented by software, it can be implemented by a manner that a processor executes software instructions. The software instructions can be composed of corresponding software modules. The software modules can be stored in a computer readable storage medium, which can be any available medium or data storage device including one or more available media integrated in a server, data center, etc. The available medium can be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., digital video disc (DVD)), or a semiconductor medium (e.g., solid state disk (SSD)), etc. The computer readable storage medium includes, but is not limited to, random access memory (RAM), flash memory, read only memory (ROM), erasable programmable ROM (EPROM), electrically EPROM (EEPROM), register, hard disk, mobile hard disk, compact disc read only memory (CD-ROM), or any other form of storage medium well known in the art. An exemplary computer readable storage medium is coupled to the processor, so that the processor can read information from the computer readable storage medium and write information to the computer readable storage medium. Of course, the computer readable storage medium can also be an integral part of the processor. The processor and the computer readable storage medium can be located in an ASIC. In addition, the ASIC can be located in an access network device, a target network device, or a core network device. Of course, the processor and the computer readable storage medium can also exist as discrete components in the access network device, the target network device, or the core network device. When implemented by software, it can also be implemented in the form of a computer program product entirely or partially. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer or a chip, the processes or functions described in the detailed description of the present application are entirely or partially generated. The computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable devices.The computer program instructions can be stored in the above computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer program instructions can be transmitted from one website site, computer, server or data center to another website site, computer, server or data center through wired (for example, coaxial cable, optical fiber, digital subscriber line (Digital Subscriber Line, DSL)) or wireless (for example, infrared, wireless, microwave, etc.) mode.

[0154] The above specific embodiments are further described in detail for the purpose of the specific embodiments of the present application, technical solutions and beneficial effects. It should be understood that the above description is only a specific embodiment of the specific embodiments of the present application, and is not used to limit the protection scope of the specific embodiments of the present application. The present application is not limited to the precise structure described above and shown in the drawings. The scope of the present application is only limited by the appended claims. Any modification, equivalent replacement, improvement, etc. made on the basis of the technical solutions of the specific embodiments of the present application shall be included in the protection scope of the specific embodiments of the present application.

Claims

1. A terminal connection method applied to a second terminal, characterized by, The method comprises: receiving a first message sent by a first terminal; forwarding the first message to a third terminal; receiving a second message sent by the third terminal, the second message being generated by the third terminal for the first terminal according to the first message; forwarding the second message to the first terminal.

2. The method of claim 1, wherein, Before the forwarding of the first message to the third terminal, the method further comprises: the second terminal determines to forward the first message to the third terminal according to a first parameter.

3. The method of claim 2, wherein, The first parameter comprises a channel quality related parameter.

4. The method according to any one of claims 1 to 3, characterized in that, The first message comprises indication information of first terminal identity information.

5. The method according to any one of claims 1 to 4, characterized in that, The second message comprises indication information of third terminal identity information.

6. The method according to any one of claims 1 to 5, characterized in that, The first parameter is configured by an access network or pre-configured.

7. The method of any of claims 1-6, wherein: The first message comprises a direct communication request message.

8. The method according to any one of claims 1 to 6, characterized in that, The second message comprises a direct communication acceptance message.

9. The method of claim 7, wherein, The direct communication request message comprises relay indication information.

10. The method of claim 9, wherein, The relay indication information is used to indicate whether the direct communication request message can be relayed, and / or to indicate a number of times the direct communication request message can be relayed.

11. A terminal connection device, characterized by The apparatus comprises: a second receiving module configured to receive a first message sent by a first terminal; a second sending module configured to forward the first message to a third terminal; the second receiving module is further configured to receive a second message sent by the third terminal, the second message being generated by the third terminal for the first terminal according to the first message; the second sending module is further configured to forward the second message to the first terminal.

12. The apparatus of claim 11, wherein, The apparatus further comprises: a second determining module configured to determine, by the second terminal, to forward the first message to the third terminal according to a first parameter.

13. The device according to claim 12, characterized in that The first parameter comprises a channel quality related parameter.

14. The apparatus of any of claims 11 to 13, wherein, The first message comprises indication information of first terminal identity information.

15. The apparatus of any of claims 11 to 14, wherein, The second message comprises indication information of third terminal identity information.

16. The apparatus of any of claims 11 to 15, wherein, The first parameter is configured by an access network or pre-configured.

17. The apparatus of any of claims 11 to 16, wherein, The first message comprises a direct communication request message.

18. The apparatus of any of claims 11 to 16, wherein, The second message comprises a direct communication acceptance message.

19. The apparatus of claim 17, wherein, The direct communication request message comprises relay indication information.

20. The apparatus of claim 19, wherein, The relay indication information is used to indicate whether the direct communication request message can be relayed, and / or to indicate a number of times the direct communication request message can be relayed.

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