WO2015131831A1 - 一种通信的方法和设备 - Google Patents

一种通信的方法和设备 Download PDF

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Publication number
WO2015131831A1
WO2015131831A1 PCT/CN2015/073665 CN2015073665W WO2015131831A1 WO 2015131831 A1 WO2015131831 A1 WO 2015131831A1 CN 2015073665 W CN2015073665 W CN 2015073665W WO 2015131831 A1 WO2015131831 A1 WO 2015131831A1
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WO
WIPO (PCT)
Prior art keywords
terminal
group
information
communication
request message
Prior art date
Application number
PCT/CN2015/073665
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English (en)
French (fr)
Inventor
衣强
欧阳国威
金辉
Original Assignee
华为终端有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为终端有限公司 filed Critical 华为终端有限公司
Priority to EP15757722.2A priority Critical patent/EP3107349B1/en
Publication of WO2015131831A1 publication Critical patent/WO2015131831A1/zh
Priority to US15/256,334 priority patent/US10069557B2/en

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02—Terminal devices
    • H04W88/04—Terminal devices adapted for relaying to or from another terminal or user
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/70—Services for machine-to-machine communication [M2M] or machine type communication [MTC]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/80—Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W40/00—Communication routing or communication path finding
    • H04W40/02—Communication route or path selection, e.g. power-based or shortest path routing
    • H04W40/22—Communication route or path selection, e.g. power-based or shortest path routing using selective relaying for reaching a BTS [Base Transceiver Station] or an access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/14—Direct-mode setup

Definitions

  • the present invention relates to the field of communications, and in particular, to a method and device for communication.
  • the terminal In a traditional mobile communication network, the terminal needs to go through the core network entity for data communication. Therefore, when the terminal loses network coverage, the terminal cannot access the network to implement communication.
  • ProSe Proximity Services
  • two terminals can implement short-distance communication from device to device without going through the core network entity. In this way, the terminal having the network coverage can implement the short-range communication by using the ProSe technology and the terminal that has lost the network coverage, thereby implementing the function of the relay terminal.
  • the relay terminal can provide a relay service for a group of remote terminals. The network sends data to the remote terminal that has lost the network coverage, and the multicast transmission efficiency can be improved by using the multicast mode.
  • the relay terminal and the remote terminal use the broadcast or multicast method to implement data interaction, thereby relaying.
  • the terminal can relay data to a group of remote terminals by means of group communication, so that the remote terminal that has lost the network coverage can receive the network data through the relay function of the relay terminal that exists in the network coverage.
  • the relay terminal selected by the remote terminal is not in the same communication group as the remote terminal, the relay terminal does not have the information of the communication group where the remote terminal is located. Therefore, the relay terminal cannot implement broadcast with the remote terminal or Multicast communication, which in turn cannot relay data for the remote terminal.
  • Embodiments of the present invention provide a method and apparatus for communication to implement a relay terminal and a remote terminal that belongs to a different communication group from the relay terminal.
  • a method of communicating comprising:
  • the second terminal is a member of a communication group, and the first terminal is a terminal having a relay function ;
  • the first terminal determines that the second terminal selects the first terminal as a relay terminal, if the first terminal is not a member of the communication group, the first terminal acquires the corresponding corresponding to the communication group.
  • the first terminal communicates with the second terminal according to the group information.
  • the first message includes the identifier information of the communication group
  • the method further includes:
  • the acquiring, by the first terminal, the group information corresponding to the communication group includes:
  • the first terminal acquires group information corresponding to the communication group.
  • the acquiring, by the first terminal, the group information corresponding to the communication group includes:
  • the terminal sends the group information corresponding to the communication group.
  • the first terminal sends, by using a proximity service ProSe server that serves the first terminal, an identifier that includes the identifier information of the communication group. a request message, so that the ProSe server sends the group information corresponding to the communication group to the first terminal according to the identifier information of the communication group, including:
  • the acquiring, by the first terminal, the group information corresponding to the communication group includes:
  • the first terminal receives group information corresponding to the communication group sent by the group server corresponding to the communication group.
  • the method further include:
  • the method before the first terminal receives the group information corresponding to the communication group that is sent by the group server corresponding to the communication group, the method also includes:
  • the first terminal After receiving the fourth request message sent by the second terminal, the first terminal sends a fifth request message to the group server corresponding to the communication group according to the fourth request message, so that the group server is And determining, according to the fifth request message, that the first terminal is not a member of the communication group, and sending the group information corresponding to the communication group to the first terminal;
  • the fifth request message includes the identifier information of the first terminal.
  • the group information includes communication resource information of the communication group.
  • the group information further includes at least one of a medium access control layer MAC address of the communication group, an inter-network interconnection protocol IP address of the communication group, and security key information.
  • the group information corresponding to the communication group includes communication resource information
  • the method further includes:
  • the acquiring, by the first terminal, the group information corresponding to the communication group includes:
  • the method further includes:
  • the first terminal communicating with the second terminal according to the group information includes:
  • the first terminal communicates with the second terminal according to the communication resource information.
  • the group information further includes verification information
  • the method further includes:
  • the first terminal generates verification information or obtains the verification information according to the group information, and verifies the second terminal according to the verification information;
  • the first terminal communicating with the second terminal according to the group information includes:
  • the first terminal After the first terminal verifies the second terminal according to the verification information, the first terminal communicates with the second terminal.
  • a method of communication comprising:
  • the proximity service ProSe server receives the first request message sent by the first terminal, where the first message is used to request a relay service, where the The second terminal is a member of the communication group, the first message includes identification information of the communication group, and the first request message is used to indicate the ProSe Sending, by the server, group information corresponding to the communication group to the first terminal;
  • the sending, by the first request message, the group information to the first terminal includes:
  • the group information includes communication resource information of the communication group.
  • the group information further includes a medium access control layer MAC address of the communication group, and an inter-network interconnection protocol IP of the communication group. At least one of the address and security key information.
  • a terminal including:
  • An acquiring unit configured to receive a first message sent by the second terminal, and when determining that the second terminal selects the first terminal as a relay terminal, if the first terminal is not a member of the communication group, acquiring The group information corresponding to the communication group; wherein the first message is used to request a relay service, the second terminal is a member of a communication group, and the first terminal is a terminal having a relay function;
  • a processing unit configured to communicate with the second terminal according to the group information obtained by the acquiring unit.
  • the first message includes the identifier information of the communication group
  • the processing unit is further configured to determine, according to the identification information of the communication group, whether the first terminal is a member of the communication group;
  • the acquiring unit is specifically configured to acquire group information corresponding to the communication group when the processing unit determines that the first terminal is not a member of the communication group.
  • the terminal further includes:
  • a first sending unit configured to send, to the ProSe server serving the first terminal, a first request message that includes the identification information of the communication group, so that the ProSe server sends the information according to the identification information of the communication group.
  • the first terminal sends the group information corresponding to the communication group.
  • the first sending unit is further configured to send, by using a ProSe server that serves the first terminal, an identifier that includes the communication group. a first request message of the information, so that the ProSe server sends a second request message to the group server of the communication group corresponding to the identification information of the communication group according to the first request message, and receives the group server according to the After the second request message is sent to the ProSe server, the group information is sent to the first terminal;
  • the second request message is used to request to acquire group information corresponding to the communication group.
  • the acquiring unit is configured to obtain the group information corresponding to the communication group, where the acquiring unit is configured to receive, by the group server corresponding to the communication group, The group information corresponding to the communication group.
  • the terminal further includes:
  • a second sending unit configured to send a third request message to the group server to which the communication group belongs, so that the group server sends the first terminal to the first terminal when determining that the first terminal is not a member of the communication group Sending group information corresponding to the communication group.
  • the acquiring unit is further configured to receive a fourth request message sent by the second terminal;
  • the terminal further includes: a third sending unit, configured to send, after the acquiring unit receives the fourth request message sent by the second terminal, to the group server corresponding to the communication group according to the fourth request message a fifth request message, to cause the group server to determine, when the first terminal is not a member of the communication group, according to the fifth request message Transmitting, by the first terminal, group information corresponding to the communication group;
  • the fifth request message includes the identifier information of the first terminal.
  • the group information includes communication resource information of the communication group.
  • the group information further includes a media access control layer MAC address of the communication group, and an inter-network interconnection protocol IP of the communication group. At least one of the address and security key information.
  • the group information corresponding to the communication group includes communication resource information
  • the terminal further includes: a fourth sending unit, configured to send a sixth request message to the mobility management entity MME, so that the MME sends a seventh request message to the base station according to the sixth request message, indicating that the base station is The terminal allocates the communication resource information;
  • the obtaining unit is configured to acquire group information corresponding to the communication group, where the acquiring unit is configured to receive communication resource information allocated by the base station;
  • the fourth sending unit is further configured to send the communication resource information to the second terminal;
  • the processing unit is configured to communicate with the second terminal according to the group information obtained by the acquiring unit, where the processing unit is configured to communicate with the second terminal according to the communication resource information.
  • the group information further includes verification information
  • the processing unit is further configured to: after the acquiring unit acquires the group information corresponding to the communication group, generate verification information or obtain the verification information according to the group information, and verify the second information according to the verification information. Ending, and after communicating with the second terminal according to the verification information, communicating with the second terminal.
  • a proximity service ProSe server including:
  • An acquiring unit configured to receive, after receiving the first message sent by the second terminal, the first request message sent by the first terminal, where the first message is used to request a relay service,
  • the second terminal is a member of the communication group, and the first message includes the The first request message is used to instruct the ProSe server to send the group information corresponding to the communication group to the first terminal;
  • a group information obtaining unit configured to obtain group information corresponding to the communication group according to the first request message
  • a sending unit configured to send the group information obtained by the group information acquiring unit to the first terminal according to the first request message, so that the first terminal communicates with the second terminal according to the group information.
  • the sending unit is configured to send, according to the first request message, a second request message to a group server to which the communication group to which the second terminal belongs, So that the group server sends the group information to the ProSe server;
  • the group information acquiring unit is specifically configured to receive the group information sent by the group server;
  • the sending unit is further configured to send the group information received by the group information acquiring unit to the first terminal.
  • the group information includes communication resource information of the communication group.
  • the group information further includes a medium access control layer MAC address of the communication group, and an inter-network interconnection protocol IP of the communication group. At least one of the address and security key information.
  • the first terminal receives the first message sent by the second terminal, and determines that the second terminal selects the first terminal as the relay terminal, if the first terminal is not a member of the communication group where the second terminal is located.
  • the first terminal acquires group information corresponding to the communication group, and communicates with the second terminal according to the group information, so that when the first terminal and the second terminal are not in the same communication group, the first terminal may Obtaining, by the network, the group information of the communication group where the second terminal is located, and implementing communication with the second terminal according to the group information, so that the relay terminal (the first terminal) and the remote terminal belong to different communication groups respectively
  • the terminal terminal (second terminal) communicates.
  • FIG. 1 is a schematic flowchart of a communication method according to an embodiment of the present invention.
  • FIG. 2 is a schematic flowchart of another communication method according to an embodiment of the present invention.
  • FIG. 3 is a schematic flowchart diagram of another communication method according to an embodiment of the present disclosure.
  • FIG. 4 is a schematic flowchart diagram of another communication method according to an embodiment of the present disclosure.
  • FIG. 5 is a schematic flowchart diagram of another communication method according to an embodiment of the present disclosure.
  • FIG. 6 is a schematic flowchart diagram of another communication method according to an embodiment of the present disclosure.
  • FIG. 7 is a schematic structural diagram of a terminal according to an embodiment of the present disclosure.
  • FIG. 8 is a schematic structural diagram of another terminal according to an embodiment of the present invention.
  • FIG. 9 is a schematic structural diagram of another terminal according to an embodiment of the present disclosure.
  • FIG. 10 is a schematic structural diagram of another terminal according to an embodiment of the present disclosure.
  • FIG. 11 is a schematic structural diagram of another terminal according to an embodiment of the present disclosure.
  • FIG. 12 is a schematic structural diagram of a ProSe server according to an embodiment of the present disclosure.
  • FIG. 13 is a schematic structural diagram of another terminal according to an embodiment of the present disclosure.
  • FIG. 14 is a schematic structural diagram of another ProSe server according to an embodiment of the present invention.
  • first, second, third, etc. may be used to describe various messages, requests, and terminals in the embodiments of the present invention, these messages, requests, and terminals should not be limited to these terms. These terms are only used to distinguish messages, requests, and terminals from one another.
  • a first terminal may also be referred to as a second terminal without departing from the scope of the embodiments of the present invention.
  • the second terminal may also be referred to as a first terminal.
  • the words “if” or “if” as used herein may be interpreted as “when” or “when” or “in response to determining” or “in response to detecting.”
  • the phrase “if determined” or “if detected (conditions or events stated)” may be interpreted as “when determined” or “in response to determination” or “when detected (stated condition or event) “Time” or “in response to a test (condition or event stated)”.
  • An embodiment of the present invention provides a method for communication. As shown in FIG. 1 , an execution body of the method is a first terminal, and the method includes:
  • the first terminal receives the first message sent by the second terminal.
  • the second terminal is a member of the communication group, and the member in the communication group can implement communication by means of group communication, the first message is used to request a relay service, and the first terminal is a terminal having a relay function.
  • the first terminal sends the first message by means of a broadcast to find the terminal with the network coverage as the relay terminal, and the first terminal monitors the second terminal broadcast.
  • a message wherein the first terminal has network coverage and has a relay capability.
  • the first terminal is the mobile phone 1
  • the second terminal is the mobile phone 2. If the mobile phone 2 cannot access the communication network due to weak signal, the mobile phone 2 is sent in the form of a broadcast.
  • the first message the mobile phone 1 has network coverage, so that the communication network can be normally accessed, and the mobile phone 1 listens to the first message.
  • the first terminal determines that the second terminal selects the first terminal as the relay terminal, if the first terminal is not a member of the communication group, the first terminal acquires group information corresponding to the communication group.
  • the first terminal receives the notification message or the IP address request message sent by the second terminal, according to the notification message or IP (Internet Protocol, interconnection between networks)
  • IP Internet Protocol, interconnection between networks
  • the first message includes the identification information of the communication group, and the first terminal determines, according to the identification information of the communication group, whether the first terminal is a member of the communication group, and the first terminal determines that the first terminal is not the When the member of the communication group is a member of the communication group, the first terminal acquires group information corresponding to the communication group.
  • the first message includes the identification information of the communication group
  • the first terminal after receiving the first message sent by the second terminal, the first terminal obtains the identifier information according to the first message, and the first terminal saves the When the identification information of the communication group to which the terminal belongs is determined to be different from the identification information of the communication group where the second terminal is located, and the identification information of the communication group where the first terminal is located, it is determined that the second terminal is not a member of the communication group.
  • the first terminal acquires the group information corresponding to the communication group, and may have the following three implementation manners.
  • the first terminal sends a first request message including the identifier information of the communication group to a ProSe (Proximity Services) server serving the first terminal, so that the ProSe server obtains the communication according to the first request message.
  • ProSe Proximity Services
  • the identification information of the group and sending the group information to the first terminal according to the identification information of the communication group.
  • the Prose server serving the first terminal in the following embodiments of the present invention refers to a Prose server serving the first terminal of the first terminal home network.
  • the first terminal sends a first request message to the ProSe server.
  • the ProSe server can verify, according to the subscription information saved by the ProSe server, whether the first terminal can serve as a relay terminal of the communication group where the second terminal is located, and if the verification fails, send a verification failure message to the first terminal, and terminate.
  • the process if the verification is successful, determining that the first terminal can serve as the relay terminal of the second terminal, sending the group information to the first terminal, where the first request message may be an indication including the request to obtain group information. Verify request message or request group information request message.
  • the ProSe server may directly send the group information to the first terminal.
  • the first terminal sends a first request message that includes the identification information of the communication group to the ProSe server that serves the first terminal, so that the ProSe server sends a communication corresponding to the identification information of the communication group according to the first request message.
  • the group server sends a second request message, and after receiving the group information sent by the group server to the ProSe server according to the second request message, sending the group information to the first terminal, where the second The request message is used to request to obtain group information corresponding to the communication group.
  • the ProSe server After the ProSe server verifies the subscription information stored in the ProSe server, if the ProSe server does not configure the group information, the ProSe server sends the content to the group server to which the communication group belongs according to the first request message. And the second request message of the identifier information, and after receiving the group information sent by the group server to the ProSe server according to the identifier information, sending the group information to the first terminal.
  • the proximity service server ProSe Server may also be referred to as a ProSe Function or a PDCF (Proximity Discovery and Communication Control Functionality), and is an entity that manages the subscription information and the verification of the ProSe service on the network side.
  • a ProSe Function or a PDCF (Proximity Discovery and Communication Control Functionality)
  • PDCF Proximity Discovery and Communication Control Functionality
  • the first terminal receives the group information corresponding to the communication group sent by the group server corresponding to the communication group.
  • the first terminal sends a third request message to the group server to which the communication group belongs, so that the group server sends the communication group corresponding to the first terminal when determining that the first terminal is not a member of the communication group.
  • Group information
  • the third request message may be a registration request and verification sent by the first terminal.
  • the request or notification message the present invention does not limit the message type.
  • the first terminal receives the fourth request message sent by the second terminal, according to the first Sending a fifth request message to the group server corresponding to the communication group, so that the group server sends the communication to the first terminal when determining that the first terminal is not a member of the communication group according to the fifth request message Group corresponding group information.
  • the fifth request message includes the identifier information of the first terminal.
  • the fourth request message may be an authentication request message sent by the second terminal to the corresponding group server, and after receiving the fourth request message, the first terminal sends a fifth request message to the group server according to the fourth request message, where
  • the fifth request message includes the identifier information of the first terminal, so that the group server verifies the second terminal after receiving the fifth request message, and further determines whether the first terminal is a group member after the verification is passed.
  • the group information is sent to the first terminal.
  • the fourth request message and the fifth request message may be the same message or different messages.
  • the group information includes communication resource information of the communication group, and the group information may further include a MAC (Media Access Control Layer) address of the communication group. At least one of an IP address and security key information of the communication group.
  • MAC Media Access Control Layer
  • the group information is only communication resource information.
  • the first terminal sends a fifth request message to the MME (Mobility Management Entity), so that the MME sends a seventh request message to the base station according to the sixth request message, indicating that the base station allocates the first request message to the first terminal.
  • MME Mobility Management Entity
  • the communication resource information the first terminal receives the communication resource information allocated by the base station, and after receiving the communication resource information allocated by the base station, sends the communication resource information to the second terminal.
  • the sixth request message may be a communication resource request message, and after receiving the sixth request message, the MME verifies whether the first terminal is a relay terminal of the communication group where the second terminal is located, and the MME may The ProSe server sends an authentication request message for the ProSe server to authenticate the first terminal.
  • the MME may send an authentication request message to the group of servers, where the verification request message includes the identifier information of the first terminal and the identifier information of the communication group where the second terminal is located, so that the group of servers is configured to the first terminal. authenticating.
  • the MME sends a resource allocation instruction to the base station, instructing the base station to allocate communication resources, and the first terminal receives the communication resource information sent by the base station, and sends the communication resource information to the second terminal.
  • the first terminal communicates with the second terminal according to the group information.
  • the first terminal sends verification information to the second terminal to verify the second terminal.
  • the group information further includes verification information.
  • the first terminal acquires the group information corresponding to the communication group
  • the first terminal generates verification information or obtains the verification information according to the group information, and verifies the second terminal according to the verification information, and according to the verification information, After the second terminal passes the verification, it communicates with the second terminal.
  • the first terminal After the first terminal verifies the passage of the second terminal, the first terminal establishes communication with the second terminal according to the group information.
  • the first terminal may implement communication with the second terminal according to the communication resource information, and further, may further protect communication between the first terminal and the second terminal according to the security key information.
  • the first terminal may implement communication with the second terminal, and the first terminal may serve as a relay terminal of the second terminal, thereby implementing information interaction between the second terminal and the communication network.
  • the first terminal receives the first message sent by the second terminal, and determines that the second terminal selects the first terminal as the relay terminal, if the first terminal is not a member of the communication group where the second terminal is located.
  • the first terminal acquires group information corresponding to the communication group, and communicates with the second terminal according to the group information, so that when the first terminal and the second terminal are not in the same communication group, the first terminal may Obtaining, by the network, the group information of the communication group where the second terminal is located, and implementing communication with the second terminal according to the group information, thereby implementing the relay terminal (the first terminal) and the remote terminal belonging to the different communication group respectively
  • the terminal (second terminal) communicates.
  • the embodiment of the present invention provides a method for communication.
  • the execution entity of the method is a ProSe (Proximity Services) server, and the method includes:
  • the proximity service ProSe server After the first terminal receives the first message sent by the second terminal, the proximity service ProSe server receives the first request message sent by the first terminal.
  • the first message is used to request the relay service
  • the second terminal is a member of the communication group
  • the first message includes the identifier information of the communication group, where the first request message is used to indicate that the ProSe server is to the first
  • the terminal sends the group information corresponding to the communication group.
  • the second terminal may lose the network coverage, and the second terminal may send the first message by means of a broadcast to find the terminal with the network coverage as the relay terminal, where the first terminal listens to the second terminal broadcast.
  • the first request message includes the identifier information, and the ProSe server receives the first request message sent by the first terminal, where the first terminal has network coverage and has a relay capability.
  • the first terminal serves the ProSe server.
  • the first terminal is the mobile phone 1 and the second terminal is the mobile phone 2. If the mobile phone 2 cannot access the communication network due to weak signal, the mobile phone 2 sends the first message in the form of a broadcast.
  • the mobile phone 1 has network coverage, so that the communication network can be normally accessed, and the mobile phone 1 receives the first message.
  • the ProSe server sends the group information of the communication group to the first terminal according to the first request message, so that the first terminal communicates with the second terminal according to the group information.
  • the ProSe server may verify, according to the subscription information saved in the ProSe server, whether the first terminal can be used as a relay of the communication group where the second terminal is located. If the verification fails, the terminal sends a verification failure message to the first terminal, and terminates the process. If the verification succeeds, if the verification succeeds, determining that the first terminal can serve as the relay terminal of the second terminal, then the first The terminal sends the group information.
  • the ProSe server may directly send the group information to the first terminal.
  • the ProSe server sends a second request message to the group server to which the communication group to which the second terminal belongs according to the first request message, so that the group server sends the group information to the ProSe server, and receives the group information sent by the group server.
  • the group information and sending the group information to the first terminal are the group information and sending the group information to the first terminal.
  • the ProSe server After the ProSe server verifies the subscription information stored in the ProSe server, if the ProSe server does not configure the group information, the ProSe server sends a second message to the server to which the communication group belongs according to the first request message. And requesting the message, so that the group server sends the group information to the ProSe server, and after receiving the group information sent by the group server according to the identifier information, sending the group information to the first terminal.
  • the group information includes communication resource information of the communication group, and the group information may further include a MAC (Media Access Control Layer) address of the communication group, and an IP of the communication group (Internet Protocol) At least one of an address and a security key information of a protocol interconnected between networks.
  • MAC Media Access Control Layer
  • IP Internet Protocol
  • the first terminal may implement communication with the second terminal according to the communication resource information, and protect communication between the first terminal and the second terminal according to the security key information.
  • the first terminal can implement communication with the second terminal, and can be used as a relay terminal, thereby implementing information interaction between the second terminal and the communication network.
  • the proximity service ProSe server receives the first request message sent by the first terminal, and sends the group information to the first request message according to the first request message.
  • the first terminal so that the first terminal communicates with the second terminal according to the group information, so that when the first terminal and the second terminal are not in the same communication group, the first terminal may acquire group information from the network. And communicating with the second terminal according to the group information, thereby communicating with terminals of different user groups.
  • An embodiment of the present invention provides a method for communication. As shown in FIG. 3, the method includes:
  • the remote terminal broadcasts a relay terminal to find a message to request a relay service.
  • the remote terminal loses network coverage, and the remote terminal is a member of the communication group, and members of the communication group can communicate by means of group communication.
  • the remote terminal search message may include the identifier information of the communication group where the remote terminal is located, and the identifier information may be in the form of a group ID (Identity) or a group ID and an application identifier.
  • the first terminal monitors the relay terminal to find a message, and sends a response message to the remote terminal.
  • the first terminal has network coverage and can serve as a relay terminal.
  • the first terminal that has the network coverage after receiving the relay terminal seeking message sent by the remote terminal, the first terminal that has the network coverage sends a response message to the remote terminal, and the response message indicates that the first terminal can serve as the relay terminal.
  • the remote terminal sends a relay service request message to the first terminal.
  • the remote terminal After receiving the at least one response message, if the remote terminal determines to select the first terminal as the relay terminal according to the preset policy, the remote terminal sends a relay service request message to the first terminal.
  • the preset policy may be that the terminal corresponding to the response message with the highest signal strength is selected as the relay terminal in the at least one response message, and the relay service request message may be configured to include the first terminal as the relay terminal indication information.
  • the notification may also be an IP (Internet Protocol) protocol request message sent by the remote terminal to notify the first terminal that the remote terminal has selected the first terminal as a relay terminal. Following the service, the present invention does not limit the specific type of the message.
  • the remote terminal selects the first terminal as the relay terminal, and may also be the at least one terminal broadcasted by the remote terminal that is monitored by the remote terminal. And determining, according to the preset policy, that the first terminal is a relay terminal, and then sending a relay service request message to the first terminal, which is not limited in this embodiment of the present invention.
  • the relay service request message sent by the remote terminal to the first terminal includes the identifier information of the communication group where the remote terminal is located, which is not limited in this embodiment of the present invention.
  • the first terminal After receiving the relay service request message, if the first terminal determines that the first terminal does not belong to the communication group, the first terminal sends the first to the ProSe (Proximity Services) server that serves the first terminal. Request message.
  • ProSe Proximity Services
  • the first terminal after acquiring the identification information of the communication group, the first terminal pre-stores the identification information of the group in which the first terminal belongs, and determines that the identification information of the communication group to which the remote terminal belongs and the first terminal save When the identification information is different, it is determined that the first terminal does not belong to the communication group to which the remote terminal belongs, and the first terminal sends a first request message to the ProSe server that serves the first terminal, requesting to acquire the communication group to which the remote terminal belongs. Group information to communicate with the remote terminal.
  • the first request message includes the identification information of the communication group, so that the ProSe server returns the group information according to the identification information of the communication group.
  • the group information includes communication resource information of the communication group acquired from the network, and may also include a MAC (Media Access Control Layer) address of the communication group, an IP address of the communication group, and a security key.
  • MAC Media Access Control Layer
  • the security key information may be any one or two of a security key for group communication and a key for verifying the remote terminal, and the communication resource information may be Band information of the transceiver group data.
  • the ProSe server After receiving the first request message, the ProSe server sends a second request message to the group server to which the communication group belongs.
  • the ProSe server After determining, according to the subscription information, the first terminal can serve as a relay terminal of the communication group to which the remote terminal belongs, the ProSe server sends a second request message to the group server to which the communication group to which the remote terminal belongs.
  • the group of servers is requested to send the group information to the ProSe server.
  • the group server sends the group information to the ProSe server according to the second request message.
  • the second request message may include the identifier information of the communication group, and after receiving the second request message sent by the ProSe server, the group server sends the corresponding group information to the ProSe server.
  • the ProSe server may verify the first terminal according to the first request message, and verify whether the first terminal can be used as the remote terminal.
  • the relay terminal of the communication group may be completed by the ProSe server or by the group server, which is not limited by the embodiment of the present invention.
  • the ProSe server requests the group information from the group server, and after receiving the group information, performs the following step S307, and optionally, if the ProSe server has a preset configuration For the group information, the ProSe server can directly determine the corresponding group information according to the identifier information included in the first request message, and perform the following step S307.
  • the ProSe server sends the group information to the first terminal.
  • the ProSe server sends the group information to the first terminal according to the first request message.
  • the first terminal After acquiring the group information, the first terminal sends the key information to the remote terminal.
  • the group information may include key information.
  • the first terminal After receiving the group information, the first terminal acquires the key information according to the group information, and sends the key information to the remote terminal.
  • the first terminal may obtain the key information according to the group information, and optionally, the first terminal may also generate key information, in the embodiment of the present invention. This is not limited.
  • the remote terminal sends a verification message to the first terminal according to the key information.
  • the remote terminal After receiving the key information sent by the first terminal, the remote terminal sends an authentication message to the first terminal according to the key information.
  • the first terminal verifies the remote terminal according to the verification message, and after the verification is passed, communicates with the remote terminal according to the group information.
  • the first terminal may verify the remote terminal according to the information in the verification message sent by the remote terminal, and after the remote terminal passes the verification, the first terminal according to the group Information communicates with the remote terminal.
  • the first terminal allocates an IP address to the remote terminal, and after the IP address is allocated to the remote terminal, the communication between the remote terminal and the network is implemented by communicating with the remote terminal.
  • the first terminal receives the relay service request message sent by the remote terminal, and when determining that the first terminal is not a member of the communication group, acquiring the group information corresponding to the communication group, and according to the group information
  • the remote terminal communicates such that when the first terminal and the remote terminal are not in the same communication group, the first terminal can acquire group information from the network to communicate with terminals of different communication groups.
  • An embodiment of the present invention provides a method for communication. As shown in FIG. 4, the method includes:
  • the remote terminal broadcasts a relay terminal to find a message to request a relay service.
  • the remote terminal loses network coverage, and the remote terminal is a member of the communication group, and members of the communication group can communicate by means of group communication.
  • the remote terminal if the remote terminal loses network coverage and cannot communicate with the network, the remote terminal broadcasts a message to find a terminal with network coverage as a relay terminal.
  • the first terminal monitors the relay terminal to find a message, and sends a response message to the remote terminal.
  • the first terminal has network coverage and can serve as a relay terminal.
  • the first terminal that has the network coverage after receiving the relay terminal seeking message sent by the remote terminal, the first terminal that has the network coverage sends a response message to the remote terminal, and the response message indicates that the first terminal can serve as the relay terminal.
  • the identification information of the first terminal such as MSISDN (Mobile Subscriber International ISDN (Integrated Service Digital), may also be included in the response message.
  • Network Integrated Services Digital Network
  • PSTN Public Switched Telephone Network
  • the remote terminal selects the first terminal as a relay terminal.
  • the remote terminal determines, according to the preset policy, that the first terminal is selected as the relay terminal, and notifies the first terminal.
  • the preset policy may be that the terminal corresponding to the response message with the highest signal strength is selected as the relay terminal in the at least one response message.
  • the remote terminal selects the first terminal as a relay terminal, and may also be a signal broadcast by at least one terminal that is monitored by the remote terminal, and determines the first selection according to a preset policy.
  • the terminal is a relay terminal, and the relay service request message is sent to the first terminal, which is not limited in this embodiment of the present invention.
  • the broadcast signal of the network coverage terminal may include identification information of the terminal, such as an MSISDN.
  • the first terminal allocates an IP (Internet Protocol) protocol to the remote terminal.
  • IP Internet Protocol
  • the first terminal may allocate an IP address to the remote terminal according to the existing IP address allocation process.
  • the remote terminal After obtaining the IP address assigned by the first terminal, the remote terminal sends an authentication request message to the group server to which the communication group belongs.
  • the verification request message includes the identifier information of the first terminal and the identifier information of the remote terminal, so that the group server further determines whether the first terminal is the one after verifying the remote terminal according to the identifier information of the remote terminal. Member of the communication group where the remote terminal is located.
  • the first terminal receives the verification request message sent by the remote terminal, and directly forwards the message to the group server, so that the group server verifies the remote terminal according to the identification information of the remote terminal, and after verifying the remote terminal, And further determining whether the first terminal is a member of a communication group where the remote terminal is located.
  • the first terminal receives the first verification request message sent by the remote terminal, and sends a second verification request message to the group server, where the second verification request message is included in the packet. And including the identifier information of the first terminal and the identifier information of the remote terminal, so that the group server verifies the remote terminal according to the identifier of the remote terminal, and after verifying the remote terminal, further determining whether the first terminal is the remote terminal Member of the communication group where the terminal is located.
  • the second verification request message may be the same as or different from the first verification request message. When the two are different, the second verification request message may be obtained according to the first verification request message.
  • the group server verifies the remote terminal according to the verification request message.
  • the group server After verifying the remote terminal according to the verification request message, the group server returns an authentication response message to the remote terminal, indicating that the remote terminal is successfully authenticated.
  • the verification response message may be directly sent to the remote terminal or forwarded to the remote terminal through the first terminal.
  • the group server sends a second verification response message to the first terminal, so that the first terminal A terminal sends a first verification response message to the remote terminal according to the second verification response message to indicate that the remote terminal is successfully authenticated, and the process of the above group server returning the verification message to the remote terminal is not shown in the figure.
  • the group server verifies the remote terminal to determine that the remote terminal belongs to the communication group.
  • the group server may further verify the first terminal, and verify whether the first terminal can serve as a relay terminal of the communication group where the remote terminal is located.
  • the verification process may be performed by a group server, or may be performed by a ProSe (Proximity Services) server, which is not limited by the embodiment of the present invention.
  • the group server determines that the first terminal does not belong to the communication group.
  • the group server determines, according to the identifier information of the first terminal, whether the first terminal belongs to the communication group. When it is determined that the first terminal does not belong to the communication group, the subsequent steps S408 to S410 are performed.
  • the group server sends a group information request message to the ProSe server serving the first terminal when determining that the first terminal does not belong to the communication group.
  • the group server sends a group information request message including the identification information of the communication group to the ProSe server to which the first terminal belongs.
  • the ProSe server sends the group information to the group server according to the group information request message.
  • the group information request message includes the identifier information of the communication group, and after receiving the group information request message, the ProSe server sends the group information corresponding to the identifier information to the group server.
  • step S410 may be directly performed without performing the above steps S408 to S409.
  • the group server sends the group information to the first terminal.
  • the group information includes the communication resource information of the communication group acquired from the network, and may also include a MAC (Media Access Control) address of the communication group, an IP address of the communication group, and security key information.
  • MAC Media Access Control
  • One or more of the security key information is a security key used for group communication
  • the communication resource information is frequency band information of the transceiver group data.
  • the group server may send a data packet including the group information to the first terminal, and the group server may also send the group information to the first terminal by the ProSe server serving the first terminal, and the present invention The embodiment does not limit this.
  • the sensing of the first terminal by the group of servers may be implemented by carrying the identifier information of the first terminal when the remote terminal sends an authentication request message to the group server, and may also pass the A terminal is required to register, verify, or send a notification message to the group of servers, which is not limited by the embodiment of the present invention.
  • the first terminal communicates with the remote terminal according to the group information.
  • the group information includes communication resource information, and the first terminal and the remote terminal can communicate with the remote terminal by using the communication resource information, and implement communication between the remote terminal and the network by communicating with the remote terminal.
  • the first terminal receives the relay service request message sent by the remote terminal, and the first terminal acquires the group information corresponding to the communication group when the first terminal is not a member of the communication group to which the remote terminal belongs. And communicating with the remote terminal according to the group information, such that when the first terminal and the remote terminal are not in the same communication group, the first terminal can acquire group information from the network, thereby communicating with terminals of different communication groups.
  • An embodiment of the present invention provides a method for communication. As shown in FIG. 5, the method includes:
  • the remote terminal broadcasts a relay terminal to find a message to request a relay service.
  • the remote terminal loses network coverage, and the remote terminal is a member of the communication group, and members of the communication group can communicate by means of group communication.
  • the remote terminal if the remote terminal loses network coverage and cannot communicate with the network, the remote terminal broadcasts a message to find a terminal with network coverage as a relay terminal.
  • the first terminal monitors the relay terminal to find a message, and sends a response message to the remote terminal.
  • the first terminal has network coverage and can serve as a relay terminal.
  • the first terminal that has the network coverage after receiving the relay terminal seeking message sent by the remote terminal, the first terminal that has the network coverage sends a response message to the remote terminal, where the response message is used to notify the remote terminal of the first terminal.
  • the response message is used to notify the remote terminal of the first terminal.
  • the remote terminal sends a relay service request message to the first terminal.
  • the remote terminal after receiving the at least one response message, if the remote terminal determines to select the first terminal as the relay terminal according to the preset policy, the remote terminal sends a relay service request message to the first terminal.
  • the preset policy may be that the selection signal is strong in the at least one response message.
  • the terminal corresponding to the largest response message is a relay terminal.
  • the relay service request message may be a notification that includes the first terminal as the relay terminal indication information, or the remote terminal sends an IP (Internet Protocol, network interconnection protocol) address request message, thereby notifying the A terminal
  • the remote terminal has selected the first terminal as a relay terminal for relay service.
  • the specific type of the message is not limited in the embodiment of the present invention.
  • the remote terminal selects the first terminal as a relay terminal, and may also be a signal broadcast by at least one terminal that is monitored by the remote terminal, and determines the first selection according to a preset policy.
  • the terminal is a relay terminal, and the relay service request message is sent to the first terminal, which is not limited in this embodiment of the present invention.
  • the first terminal allocates an IP address to the remote terminal.
  • the first terminal after receiving the IP address allocation request of the remote terminal, allocates an IP address to the remote terminal according to the existing IP address allocation process.
  • the remote terminal After obtaining the IP address assigned by the first terminal, the remote terminal sends an authentication request message to the group server to which the communication group belongs.
  • the verification request message includes the identifier information of the first terminal and the identifier information of the remote terminal, so that the group server further determines whether the first terminal is the one after verifying the remote terminal according to the identifier information of the remote terminal. Member of the communication group where the remote terminal is located.
  • the first terminal receives the verification request message and directly forwards the message to the group server, so that the group server verifies the remote terminal according to the identification information of the remote terminal, and further determines the first after verifying the remote terminal. Whether the terminal is a member of the communication group where the remote terminal is located.
  • the first terminal receives the first verification request message sent by the remote terminal, and sends a second verification request message to the group server, where the second verification request message includes the identifier information of the first terminal and the far
  • the identification information of the terminal is such that the group server verifies the remote terminal according to the identifier of the remote terminal, and after verifying the remote terminal, further determines whether the first terminal is a member of the communication group where the remote terminal is located.
  • the second verification request message may be the same as or different from the first verification request message. When the two are different, the second verification request message may be obtained according to the first verification request message.
  • the group server verifies the remote terminal according to the verification request message.
  • the group server After the remote server verifies the remote terminal according to the verification request message, the group server returns a verification response message to the remote terminal, indicating that the remote terminal is successfully authenticated. If the remote terminal passes the verification, the subsequent process is performed, otherwise the business process is terminated.
  • the verification response message may be directly sent to the remote terminal or forwarded to the remote terminal through the first terminal.
  • the group server sends a second verification response message to the first terminal, so that The first terminal sends a first verification response message to the remote terminal according to the second verification response message to indicate that the remote terminal is successfully authenticated, and the process of the above group server returning the verification response message to the remote terminal is not shown in the figure.
  • the group server verifies the remote terminal to determine that the remote terminal belongs to the communication group.
  • the group server may further verify the first terminal, and verify whether the first terminal can serve as a relay terminal of the communication group where the remote terminal is located.
  • the verification process may be performed by a group server, or may be performed by a ProSe (Proximity Services) server, which is not limited by the embodiment of the present invention.
  • the first terminal After determining that the remote terminal passes the verification, the first terminal sends a group information request message to the remote terminal.
  • the first terminal sends a notification message to the first terminal to notify the first terminal.
  • the remote terminal authenticates, after determining that the remote terminal belongs to the communication group, the group terminal sends a group information request message to the remote terminal, so that the remote terminal sends the group information of the communication group to the first terminal.
  • the relay service request message includes the identification information of the communication group
  • the first terminal acquires the identification information of the communication group, and the first terminal pre-stores the group in which the group is located. Determining the first information when determining that the identification information of the communication group to which the remote terminal belongs is different from the identification information saved by the first terminal
  • the terminal does not belong to the communication group to which the remote terminal belongs, and the first terminal sends a group information request message to the remote terminal.
  • the group information includes the communication resource information of the communication group, and may further include one of a MAC (Media Access Control) address of the communication group, an IP address of the communication group, and security key information. Or multiple. This security key information is used for the security key of the group communication.
  • the communication resource information refers to frequency band information of the transceiver group data.
  • the identification information of the communication group to which the remote terminal belongs may be included in the relay terminal search message broadcasted by the remote device, or may be included in the relay service request message sent by the remote terminal. This embodiment of the present invention does not limit this.
  • the remote terminal sends the group information to the first terminal according to the group information request message.
  • the remote terminal after receiving the group information request message sent by the first terminal, the remote terminal sends the group information to the first terminal according to the group information request message.
  • the first terminal communicates with the remote terminal according to the group information.
  • the group information includes communication resource information, and the first terminal and the remote terminal can communicate with the remote terminal by using the communication resource information, and implement communication between the remote terminal and the network by communicating with the remote terminal.
  • the first terminal receives the relay service request sent by the remote terminal, and the first terminal acquires the group information corresponding to the communication group when the first terminal is not a member of the communication group to which the remote terminal belongs. And communicating with the remote terminal according to the group information, so that when the first terminal and the remote terminal are not in the same communication group, the first terminal may acquire the group information from the remote terminal, thereby interacting with different communication groups. Terminal communication.
  • An embodiment of the present invention provides a method for communication. As shown in FIG. 6, the method includes:
  • the remote terminal broadcasts a relay terminal to find a message to request a relay service.
  • the remote terminal loses network coverage, and the remote terminal is a member of the communication group, and members of the communication group can communicate by means of group communication.
  • the remote terminal if the remote terminal loses network coverage and cannot communicate with the network, the remote terminal broadcasts a message to find a terminal with network coverage as a relay terminal.
  • the first terminal monitors the relay terminal to find a message, and sends a response message to the remote terminal.
  • the first terminal has network coverage and can serve as a relay terminal.
  • the first terminal that has the network coverage after receiving the relay terminal seeking message sent by the remote terminal, the first terminal that has the network coverage sends a response message to the remote terminal, and the response message indicates that the first terminal can serve as the relay terminal.
  • the remote terminal sends a relay service request message to the first terminal.
  • the remote terminal after receiving the at least one response message, if the remote terminal determines to select the first terminal as the relay terminal according to the preset policy, the remote terminal sends a relay service request message to the first terminal.
  • the preset policy may be that the terminal corresponding to the response message with the highest signal strength is selected as the relay terminal in the at least one response message.
  • the relay service request message may be a notification that includes the first terminal as the relay terminal indication information, or the remote terminal sends an IP (Internet Protocol, network interconnection protocol) address request message, thereby notifying the A terminal
  • the remote terminal has selected the first terminal as a relay terminal for relay service.
  • the specific type of the message is not limited in the embodiment of the present invention.
  • the remote terminal selects the first terminal as a relay terminal, and may also be a signal broadcast by at least one terminal that is monitored by the remote terminal, and determines the first selection according to a preset policy.
  • the terminal is a relay terminal, and the relay service request message is sent to the first terminal, which is not limited in this embodiment of the present invention.
  • the first terminal After receiving the relay service request message, if the relay service request message includes the identification information of the communication group, the first terminal acquires the communication group after receiving the relay service request message. Identification information, the first terminal pre-stores the identification information of the group in which the first terminal is located, and determines that the first terminal does not determine that the identification information of the communication group to which the remote terminal belongs is different from the identification information saved by the first terminal. If the communication terminal belongs to the remote terminal, the first terminal acquires communication resource information that the first terminal communicates with the remote terminal, and if the first terminal cannot specify the communication according to the preset configuration information of the first terminal In the case of resource information, the following steps S604 to S611 are performed.
  • the identification information of the communication group to which the remote terminal belongs may be included in the relay terminal search message broadcasted by the remote device, or may be included in the relay service request message sent by the remote terminal. This embodiment of the present invention does not limit this.
  • the first terminal may also perform an IP address allocation and a process of verifying the remote terminal.
  • the first terminal may also perform an IP address allocation and a process of verifying the remote terminal.
  • the first terminal After receiving the relay service request message, the first terminal sends a communication resource request message to the MME (Mobility Management Entity) if it determines that the first terminal does not belong to the communication group according to the identifier information.
  • MME Mobility Management Entity
  • the communication resource request message may include an identifier of the communication group where the remote terminal is located and the first terminal identifier, and the identifier of the communication group may be a group ID (Identity, ID) or group ID+APP (Application, application) ) The form of the ID.
  • group ID Identity, ID
  • group ID+APP Application, application
  • the MME sends an authentication request message to the ProSe (Proximity Services) server serving the first terminal according to the communication resource request message to verify whether the first terminal can be a relay terminal for the communication group.
  • ProSe Proximity Services
  • the ProSe server may verify the first terminal according to the subscription information saved in the ProSe server, or may verify the first terminal by the group server to which the communication group belongs to the remote device, if the ProSe server is configured according to the subscription information. To verify the first terminal, perform the following step S606.
  • the ProSe server verifies the first terminal.
  • the ProSe server may be based on a subscription letter saved in the ProSe server. Verify the first terminal.
  • the ProSe server requests the group server to which the remote device belongs to verify the first terminal, performing the following steps S607 to S608.
  • the ProSe server sends the verification request message to the group of servers.
  • the resource request information sent by the first terminal to the MME includes the identifier information of the first terminal and the identifier information of the communication group to which the remote terminal belongs, and the first request is sent by the MME to the ProSe server.
  • the identification information and the identification information of the communication group to which the remote terminal belongs, the ProSe server sends the identification information including the first terminal and the identification information of the communication group to which the remote terminal belongs to the group server.
  • the group server verifies the first terminal, and after the verification is passed, sends a response message to the ProSe server.
  • the group server verifies the first terminal based on the group information, and sends a response message to the ProSe server after the verification is passed, and if the verification fails, sends a verification failure message to the ProSe server.
  • the ProSe server sends a response message to the MME.
  • the ProSe server After verifying that the first terminal passes or receiving the response message sent by the group of servers, the ProSe server sends a response message to the MME to notify the MME that the first terminal successfully authenticates, and if the verification fails, sends a verification failure to the MME. Message.
  • the MME sends a communication resource allocation instruction to the base station.
  • the MME wants the base station to send a communication resource allocation instruction, and instructs the base station to allocate communication resources for the communication between the first terminal and the remote terminal.
  • the communication resource allocation instruction may be an initial context setup request message, where the initial context setup request message includes the proximity service group communication indication information.
  • the base station allocates a communication resource according to the communication resource allocation instruction, and sends the corresponding communication resource information to the first terminal.
  • the base station after receiving the communication resource allocation instruction sent by the MME, the base station allocates communication resources for communication between the first terminal and the remote terminal according to the communication resource allocation instruction, and after allocating the communication resource, the communication resource Corresponding communication resource information is sent to the The first terminal.
  • the allocated communication resource information may be transmitted to the first terminal through an RRC (Radio Resource Control) connection reconfiguration message (RRC connection reconfiguration message).
  • RRC Radio Resource Control
  • step S6040 when the first terminal specifies the communication resource information according to the preset configuration information of the first terminal, performing the following step S6040.
  • the first terminal After receiving the relay service request message, the first terminal determines that the first terminal does not belong to the communication group, and obtains communication resource information for group communication with the remote terminal according to the preset configuration information of the first terminal. .
  • the first terminal may specify communication resource information for performing group communication with the remote terminal according to the preset configuration information of the first terminal.
  • the first terminal sends the group information to the remote terminal.
  • the group information includes communication resource information of the communication group specified by the first terminal or acquired from the network, and may further include a MAC of the communication group required by the first terminal to specify communication with the remote terminal group (Media Access Control)
  • the medium access control layer the address, the IP address of the communication group or the security key information, and the first terminal may allocate the above information based on the provisioning information.
  • the security key information is a security key of group communication
  • the communication resource information is frequency band information used for data communication.
  • the first terminal communicates with the remote terminal according to the group information.
  • the first terminal implements, according to the obtained group information, that the remote terminal communicates with the network through the relay terminal.
  • the group information includes communication resource information, and the first terminal and the remote terminal can communicate with the remote terminal by using the communication resource information, and implement communication between the remote terminal and the network by communicating with the remote terminal.
  • the first terminal receives the relay service request message sent by the remote terminal, and when determining that the first terminal is not a member of the communication group to which the remote terminal belongs, the first terminal specifies the communication information or applies for the communication resource. Obtaining the group information, and sending the group information to the remote terminal, and communicating with the remote terminal according to the group information, so that when the first terminal and the remote terminal are not in the same communication group, the first terminal can obtain from the network. Group information to communicate with terminals of different communication groups.
  • the embodiment of the present invention provides a terminal 70.
  • the terminal 70 includes:
  • the acquiring unit 71 is configured to receive a first message sent by the second terminal, and when determining that the second terminal selects the terminal as a relay terminal, if the terminal is not a member of the communication group, acquiring the communication Group corresponding group information.
  • the first message is used to request a relay service
  • the second terminal is a member of a communication group
  • the terminal is a terminal having a relay function.
  • the processing unit 72 is configured to communicate with the second terminal according to the group information obtained by the obtaining unit 71.
  • the second terminal if the second terminal loses the network coverage, the second terminal sends the first message by means of a broadcast to find the terminal with the network coverage as the relay terminal, and the terminal receives the first message broadcast by the second terminal, where The terminal has network coverage.
  • the terminal is the mobile phone 1
  • the second terminal is the mobile phone 2. If the mobile phone 2 cannot access the communication network due to weak signal, the mobile phone 2 sends the first message in the form of a broadcast, and the mobile phone 1 has a network. Covering, so that the communication network can be normally accessed, and the mobile phone 1 receives the first message.
  • the first message includes identification information of the communication group
  • the processing unit 72 is further configured to determine, according to the identification information of the communication group, whether the terminal is a member of the communication group;
  • the obtaining unit 71 is specifically configured to acquire group information corresponding to the communication group when the processing unit 72 determines that the terminal is not a member of the communication group.
  • the first message includes the identification information of the communication group where the second terminal is located
  • the terminal may obtain the identification information of the communication group according to the received first message, and obtain the identifier of the communication group to which the terminal belongs. Determining the second end when determining that the identification information of the communication group where the second terminal is located is different from the identification information of the communication group where the terminal is located The end is not a member of the communication group.
  • the terminal may request the group information from the proximity service ProSe (Proximity Services) server to which the terminal belongs, or may request the group information from the group server to which the communication group belongs, and may also send the group information to the MME (Mobility Management). Entity, the mobility management entity) requests this set of information.
  • ProSe Proximity Services
  • MME Mobility Management
  • the terminal 70 further includes:
  • the first sending unit 73 is configured to send, to the ProSe server serving the terminal, a first request message that includes the identifier information of the communication group, so that the ProSe server sends the group corresponding to the communication group to the terminal according to the identifier information of the communication group. information.
  • the ProSe server may verify, according to the subscription information saved in the ProSe server, whether the terminal can serve as a relay terminal of the communication group where the second terminal is located, if the verification is performed. If the failure is successful, the verification failure message is sent to the terminal. If the verification succeeds, it is determined that the terminal can serve as the relay terminal of the second terminal, and if the group information is sent to the terminal, the group information is sent to the terminal.
  • the ProSe server may directly send the group information to the terminal.
  • the first sending unit 73 is further configured to send, to the ProSe server that serves the terminal, a first request message that includes the identity information of the communication group, so that the ProSe server sends the first request message to the communication group according to the first request message.
  • the group server of the communication group corresponding to the identifier information sends the second request message, and after receiving the group information sent by the group server to the ProSe server according to the second request message, the group information is sent to the terminal.
  • the second request message is used to request to obtain group information corresponding to the communication group.
  • the terminal may send a third request message to the group server to which the communication group belongs, so that the group server sends the group information to the terminal.
  • the obtaining unit 71 is configured to acquire the group information corresponding to the communication group, where the acquiring unit 71 is configured to receive the communication sent by the group server corresponding to the communication group. Group corresponding group information.
  • the terminal 70 further includes:
  • a second sending unit 74 configured to send a third request message to the group server to which the communication group belongs, so that the group server sends the group information corresponding to the communication group to the terminal when determining that the terminal is not a member of the communication group .
  • the acquiring unit 71 is further configured to receive a fourth request message sent by the second terminal.
  • the terminal 70 further includes: a second sending unit 75, configured to send the fifth request message to the group server corresponding to the communication group according to the fourth request message, after the obtaining unit 71 receives the fourth request message sent by the second terminal And requesting the message, so that the group server sends the group information corresponding to the communication group to the terminal when determining that the terminal is not a member of the communication group according to the fifth request message.
  • a second sending unit 75 configured to send the fifth request message to the group server corresponding to the communication group according to the fourth request message, after the obtaining unit 71 receives the fourth request message sent by the second terminal And requesting the message, so that the group server sends the group information corresponding to the communication group to the terminal when determining that the terminal is not a member of the communication group according to the fifth request message.
  • the fifth request message includes the identification information of the terminal.
  • the group information includes communication resource information of the communication group, and the group information may further include a MAC (Media Access Control Layer) address of the communication group, and an IP of the communication group (Internet Protocol)
  • the protocol or security key information is interconnected by the network, and the terminal can allocate the above information based on the provisioning information.
  • the security key information is a security key of group communication
  • the communication resource information is frequency band information used for data communication.
  • the group information corresponding to the communication group includes communication resource information.
  • the terminal 70 further includes: a fourth sending unit 76, configured to send a sixth request message to the mobility management entity MME, so that the MME sends a seventh request message to the base station according to the sixth request message, indicating that the base station allocates the terminal The communication resource information.
  • a fourth sending unit 76 configured to send a sixth request message to the mobility management entity MME, so that the MME sends a seventh request message to the base station according to the sixth request message, indicating that the base station allocates the terminal The communication resource information.
  • the acquiring unit 71 is configured to acquire the group information corresponding to the communication group, and the acquiring unit 71 is configured to receive the communication resource information allocated by the base station;
  • the fourth sending unit 76 is further configured to send the communication resource information to the second terminal.
  • the processing unit 72 is configured to communicate with the second terminal according to the group information obtained by the acquiring unit 71, and the processing unit 72 is configured to use the communication resource information according to the communication resource information. Communicating with the second terminal.
  • the MME verifies whether the terminal can be the relay terminal of the communication group where the second terminal is located, and the MME may send an authentication request message to the ProSe server, where the verification request message includes the The subscription information of the terminal, so that the ProSe server authenticates the terminal.
  • the MME may send an authentication request message to the group of servers, where the verification request message includes the identification information of the terminal and the identification information of the communication group where the second terminal is located, so that the group of servers performs verification on the terminal.
  • the MME sends a resource allocation instruction to the base station, instructing the base station to allocate communication resources, and the terminal receives the communication resource information sent by the base station, and sends the communication resource information to the second terminal.
  • the terminal sends verification information to the second terminal to verify the second terminal.
  • the group information includes verification information
  • the processing unit 72 is further configured to: after the acquiring unit acquires the group information corresponding to the communication group, generate verification information or obtain the verification information according to the group information, and according to the verification information, according to the verification information
  • the second terminal is verified, and after the second terminal is verified to pass according to the verification information, the second terminal is communicated.
  • the terminal After the terminal passes the verification of the second terminal, the terminal establishes communication with the second terminal according to the group information.
  • the terminal may implement communication with the second terminal according to the communication resource information, and protect communication between the terminal and the second terminal according to the security key information.
  • the terminal can implement communication with the second terminal, and can be used as a relay terminal, thereby implementing information interaction between the second terminal and the communication network.
  • the terminal receives the first message sent by the second terminal, and when determining that the terminal is not a member of the communication group, acquires group information corresponding to the communication group, and communicates with the second terminal according to the group information, such that When the terminal and the second terminal are not in the same communication group, the terminal may apply for communication resources to the network, thereby communicating with terminals of different user groups.
  • the embodiment of the present invention provides a proximity service ProSe (Proximity Services) server 120.
  • the ProSe server 120 includes:
  • the receiving unit 121 is configured to receive, after receiving the first message sent by the second terminal, the first request message sent by the first terminal.
  • the first message is used to request the relay service
  • the second terminal is a member of the communication group
  • the first message includes the identifier information of the communication group, where the first request message is used to indicate that the ProSe server is to the first
  • the terminal sends the group information corresponding to the communication group.
  • the group information obtaining unit 122 is configured to obtain group information corresponding to the communication group according to the first request message.
  • the sending unit 123 is configured to send the group information obtained by the group information acquiring unit 122 to the first terminal according to the first request message, so that the first terminal communicates with the second terminal according to the group information.
  • the second terminal if the second terminal loses the network coverage, the second terminal sends the first message by means of a broadcast to find the terminal with the network coverage as the relay terminal, and the first terminal receives the first broadcast of the second terminal. After the message, the first request message is sent to the ProSe server, and the ProSe server accepts the first request message sent by the first terminal.
  • the first terminal has network coverage, and the first terminal belongs to the ProSe server.
  • the ProSe server may verify, according to the subscription information saved in the ProSe server, whether the first terminal can be used as a relay of the communication group where the second terminal is located. If the verification fails, the terminal sends a verification failure message to the first terminal, and if the verification succeeds, sends the group information to the first terminal.
  • the ProSe server may directly send the group information to the first terminal.
  • the group information includes communication resource information of the communication group, and The group information may further include a MAC (Media Access Control Layer) address of the communication group, an IP (Internet Protocol) address or security key information of the communication group, and the first terminal.
  • the above information can be assigned based on the provisioning information.
  • the security key information is a security key of group communication
  • the communication resource information is frequency band information used for data communication.
  • the sending unit 123 is configured to send, according to the first request message, a second request message to a group server to which the communication group to which the second terminal belongs, so that the group server sends the group information to the ProSe server.
  • the group information acquiring unit 122 is specifically configured to receive the group information sent by the group server.
  • the sending unit 123 is specifically configured to send the group information received by the group information acquiring unit 122 to the first terminal.
  • the ProSe server After the ProSe server verifies the subscription information stored in the ProSe server, if the ProSe server does not save the group information, the ProSe server sends the first request message to the group server to which the communication group belongs according to the first request message. And requesting, after receiving the group information sent by the group server to the ProSe server according to the second request, sending the group information to the first terminal.
  • the first terminal when the first terminal and the second terminal are not in the same communication group, the first terminal can apply for communication resources to the network, thereby communicating with terminals of different user groups.
  • the embodiment of the present invention provides a terminal 130.
  • the terminal 130 includes:
  • the receiver 131, the transmitter 132, the memory 133, and the processor 134 (the number of the processors 134 in the device may be one or more, and one processor in FIG. 13 is taken as an example).
  • the receiver 131, the transmitter 132, the memory 133, and The processor 134 can be connected by a bus or other means, wherein the bus connection is taken as an example in FIG.
  • the memory 133 is configured to store program code
  • the processor 134 is configured to invoke the program code stored in the memory 133 to perform the following steps:
  • the receiver 131 Receiving, by the receiver 131, the first message sent by the second terminal, and determining that the second terminal selects the terminal as the relay terminal, if the terminal is not a member of the communication group, acquiring group information corresponding to the communication group;
  • the first message is used to request a relay service, the second terminal is a member of a communication group, and the terminal is a terminal having a relay function;
  • the processor 134 passes the receiver 131 and the transmitter 132 according to the group information.
  • the second terminal communicates.
  • the first message includes identification information of the communication group; the processor 134 determines, according to the identification information of the communication group, whether the terminal is a member of the communication group, and when determining that the terminal is not a member of the communication group, The group information corresponding to the communication group is acquired by the receiver 131.
  • the processor 134 transmits a first request message including the identification information of the communication group to the proximity service ProSe server serving the terminal by the transmitter 132, so that the ProSe server sends the communication to the terminal according to the identification information of the communication group.
  • Group corresponding group information
  • the processor 134 sends a first request message including the identification information of the communication group to the ProSe server serving the terminal by the transmitter 132, so that the ProSe server corresponds to the identification information of the communication group according to the first request message.
  • the group server of the communication group sends a second request message, and after receiving the group information sent by the group server to the ProSe server according to the second request message, sending the group information to the terminal, wherein the second The request message is used to request to obtain group information corresponding to the communication group.
  • the processor 134 receives, by the receiver 131, group information corresponding to the communication group sent by the group server corresponding to the communication group.
  • the processor 134 sends a third request message to the group server to which the communication group belongs by using the transmitter 132, so that the group server sends the corresponding group of the communication group to the terminal when determining that the terminal is not a member of the communication group.
  • Group information
  • the processor 134 receives the group service corresponding to the communication group through the receiver 131. Before receiving the group information corresponding to the communication group, the processor 134, after receiving the fourth request message sent by the second terminal by the receiver 131, responds to the communication group by the transmitter 132 according to the fourth request message.
  • the group server sends a fifth request message, so that the group server sends the group information corresponding to the communication group to the terminal when determining that the terminal is not a member of the communication group according to the fifth request message; wherein the fifth request The message contains the identification information of the terminal.
  • the group information includes communication resource information of the communication group.
  • the group information further includes a MAC (Media Access Control Layer) address of the communication group, an IP (Internet Protocol) protocol address and security key information of the communication group. At least one of them.
  • MAC Media Access Control Layer
  • IP Internet Protocol
  • the group information corresponding to the communication group includes communication resource information
  • the processor 134 before the processor 134 acquires the group information corresponding to the communication group by the receiver 131, the processor 134 further performs: sending, by the transmitter 132, the mobility management entity MME. a sixth request message, so that the MME sends a seventh request message to the base station according to the sixth request message, instructing the base station to allocate the communication resource information for the terminal; receiving, by the receiver 131, the communication resource information allocated by the base station;
  • the router 132 transmits the communication resource information to the second terminal; the processor 134 communicates with the second terminal through the receiver 131 and the transmitter 132 according to the communication resource information.
  • the group information further includes verification information.
  • the processor 134 obtains the group information corresponding to the communication group by the receiver 131, the processor 134 generates verification information or obtains the verification information according to the group information, and according to the verification information.
  • the second terminal is verified to communicate with the second terminal through the receiver 131 and the transmitter 132 after the second terminal is verified to pass according to the verification information.
  • the embodiment of the present invention provides a ProSe (Proximity Services) server 140.
  • the ProSe server includes:
  • Receiver 141, transmitter 142, memory 143, and processor 144 (in the device)
  • the number of processors 144 may be one or more, and one processor is taken as an example in FIG. 14).
  • the receiver 141, the transmitter 142, the memory 143, and the processor 144 may be connected by a bus or other means, wherein the bus connection is taken as an example in FIG.
  • the memory 143 is configured to store program code
  • the processor 144 is configured to invoke the program code stored in the memory 143 to perform the following steps:
  • the first terminal After receiving the first message sent by the second terminal, the first terminal receives the first request message sent by the first terminal, and sends the group information to the first device by using the transmitter 142 according to the first request message.
  • a terminal wherein the first terminal communicates with the second terminal according to the group information; wherein the first message is used to request a relay service, the second terminal is a member of a communication group, and the first message includes the communication group
  • the first request message is used to instruct the ProSe server to send the group information corresponding to the communication group to the first terminal.
  • the processor 144 sends a second request message to the group server to which the communication group of the second terminal belongs according to the first request message by the transmitter 142, so that the group server sends the group information to the ProSe server; 141 receives the group information sent by the group of servers, and sends the group information to the first terminal by using the transmitter 142.
  • the group information includes communication resource information of the communication group.
  • the group information further includes at least one of a medium access control layer MAC address of the communication group, an inter-network interconnection protocol IP address of the communication group, and security key information.

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Abstract

本发明实施例提供一种通信的方法和设备，涉及通信领域，以实现中继终端与不同通信组的远端终端通信，该方法包括：第一终端接收第二终端发送的第一消息，在确定该第二终端选择该第一终端作为中继终端时，获取该通信组对应的组信息，并根据该组信息与该第二终端通信，该方法实施例用于实现通信。

Description

一种通信的方法和设备
本申请要求于2014年3月5日提交中国专利局、申请号为201410079491.3中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明涉及通信领域，尤其涉及一种通信的方法和设备。
背景技术
在传统移动通信网络中，终端进行数据通信需要经过核心网实体，因此，当终端失去网络覆盖时，则无法接入网络实现通信。通过采用ProSe(Proximity Services，接近业务)技术，两个终端可以实现设备到设备的短距离通信，而无需经过核心网实体。这样，存在网络覆盖的终端可以通过ProSe技术与失去网络覆盖的终端实现短程通信，从而实现中继终端的功能，现有技术中，中继终端可以为一组远端终端提供中继服务，当网络向失去网络覆盖的远端终端发送数据，可以利用多播的方式提高数据传输效率，在这种情况下中继终端与远端终端间使用广播或多播的方式实现数据交互，从而中继终端可以通过组通信的方式为一组远端终端中继转发数据，使得失去网络覆盖的远端终端可以通过存在网络覆盖的中继终端的中继功能接收网络数据。
但是，若远端终端选取的中继终端与该远端终端不在同一通信组，则中继终端没有远端终端所在通信组的信息，因此，中继终端无法实现与该远端终端的广播或多播通信，进而无法为该远端终端中继转发数据。
发明内容
本发明的实施例提供一种通信的方法和设备，以实现中继终端和与所述中继终端分别属于不同通信组的远端终端通信。
为达到上述目的，本发明的实施例采用如下技术方案：
第一方面，提供一种通信的方法，包括：
第一终端接收第二终端发送的第一消息；其中，所述第一消息用于请求中继服务，所述第二终端是通信组的成员，所述第一终端是具有中继功能的终端；
所述第一终端在确定所述第二终端选择所述第一终端作为中继终端时，若所述第一终端不是所述通信组的成员，所述第一终端获取所述通信组对应的组信息；
所述第一终端根据所述组信息与所述第二终端通信。
结合第一方面，在第一方面第一种可能的实现方式中，所述第一消息包括所述通信组的标识信息；
在所述第一终端获取所述通信组对应的组信息前，所述方法还包括：
所述第一终端根据所述通信组的标识信息确定所述第一终端是否是所述通信组的成员；
所述第一终端获取所述通信组对应的组信息包括：
在确定所述第一终端不是所述通信组的成员时，所述第一终端获取所述通信组对应的组信息。
结合第一方面或第一方面第一种可能的实现方式，在第二种可能的实现方式中，所述第一终端获取所述通信组对应的组信息包括：
所述第一终端向服务所述第一终端的接近业务ProSe服务器发送包含所述通信组的标识信息的第一请求消息，以便所述ProSe服务器根据所述通信组的标识信息向所述第一终端发送所述通信组对应的组信息。
结合第一方面第二种可能的实现方式，在第三种可能的实现方式中，所述第一终端向服务所述第一终端的接近业务ProSe服务器发送包含所述通信组的标识信息的第一请求消息，以便所述ProSe服务器根据所述通信组的标识信息向所述第一终端发送所述通信组对应的组信息包括：
所述第一终端向服务所述第一终端的ProSe服务器发送包含所述通信组的标识信息的第一请求消息，以便所述ProSe服务器根据所述第一请求消息向所述通信组的标识信息对应的通信组的组服务器发送第二请求消息，并在接收到所述组服务器根据所述第二请求消息向所述ProSe服务器发送的所述组信息后，将所述组信息发送至所述第一终端，其中，所述第二请求消息用于请求获取所述通信组对应的组信息。
结合第一方面，在第四种可能的实现方式中，所述第一终端获取所述通信组对应的组信息包括：
所述第一终端接收所述通信组对应的组服务器发送的所述通信组对应的组信息。
结合第一方面第四种可能的实现方式，在第五种可能的实现方式中，在所述第一终端确定所述第二终端选择所述第一终端作为中继终端后，所述方法还包括：
所述第一终端向所述通信组归属的组服务器发送第三请求消息，以使所述组服务器在确定所述第一终端不是所述通信组的成员时，向所述第一终端发送所述通信组对应的组信息。
结合第一方面第四种可能的实现方式，在第六种可能的实现方式中，在所述第一终端接收所述通信组对应的组服务器发送的所述通信组对应的组信息前，所述方法还包括：
所述第一终端在接收到所述第二终端发送的第四请求消息后，根据所述第四请求消息向所述通信组对应的组服务器发送第五请求消息，以使所述组服务器在根据所述第五请求消息确定所述第一终端不是所述通信组的成员时，向所述第一终端发送所述通信组对应的组信息；
其中，所述第五请求消息包含所述第一终端的标识信息。
结合第一方面第二至第六种可能的实现方式中的任一种，在第七种可能的实现方式中，所述组信息包括所述通信组的通信资源信息。
结合第一方面第七种可能的实现方式，在第八种可能的实现方式 中，所述组信息还包括所述通信组的媒介访问控制层MAC地址、所述通信组的网络间互联协议IP地址和安全密钥信息中的至少一项。
结合第一方面或第一方面第一种可能的实现方式，在第九种可能的实现方式中，所述通信组对应的组信息包括通信资源信息；
在所述获取所述通信组对应的组信息前，所述方法还包括：
向移动性管理实体MME发送第六请求消息，以便所述MME根据所述第六请求消息向基站发送第七请求消息，指示所述基站为所述第一终端分配所述通信资源信息；
所述第一终端获取所述通信组对应的组信息包括：
所述第一终端接收所述基站分配的通信资源信息；
在所述第一终端获取所述通信组对应的组信息后，所述方法还包括：
所述第一终端向所述第二终端发送所述通信资源信息；
所述第一终端根据所述组信息与所述第二终端通信包括：
所述第一终端根据所述通信资源信息与所述第二终端通信。
结合第一方面至第一方面第九种可能的实现方式中的任一种，在第十种可能的实现方式中，所述组信息还包括验证信息；
在所述第一终端获取所述通信组对应的组信息后，所述方法还包括：
所述第一终端生成验证信息或根据所述组信息得到所述验证信息，并根据所述验证信息验证所述第二终端；
所述第一终端根据所述组信息与所述第二终端通信包括：
所述第一终端在根据所述验证信息对所述第二终端验证通过后，与所述第二终端通信。
第二方面，提供一种通信的方法，包括：
在第一终端接收到第二终端发送的第一消息后，接近业务ProSe服务器接收所述第一终端发送的第一请求消息；其中，所述第一消息用于请求中继服务，所述第二终端是通信组的成员，所述第一消息包括所述通信组的标识信息，所述第一请求消息用于指示所述ProSe 服务器向该第一终端发送该通信组对应的组信息；
根据所述第一请求消息将所述组信息发送至所述第一终端，以便所述第一终端根据所述组信息与所述第二终端通信。
结合第二方面，在第二方面第一种可能的实现方式中，所述根据所述第一请求消息将所述组信息发送至所述第一终端包括：
根据所述第一请求消息向所述第二终端所在通信组归属的组服务器发送第二请求消息，以便所述组服务器向所述ProSe服务器发送所述组信息；
接收所述组服务器发送的所述组信息，并将所述组信息发送至所述第一终端。
结合第二方面或第二方面第一种可能的实现方式，在第二种可能的实现方式中，所述组信息包括所述通信组的通信资源信息。
结合第二方面第二种可能的实现方式，在第三种可能的实现方式中，所述组信息还包括所述通信组的媒介访问控制层MAC地址、所述通信组的网络间互联协议IP地址和安全密钥信息中的至少一项。
第三方面，提供一种终端，包括：
获取单元，用于接收第二终端发送的第一消息，并在确定所述第二终端选择所述第一终端作为中继终端时，若所述第一终端不是所述通信组的成员，获取所述通信组对应的组信息；其中，所述第一消息用于请求中继服务，所述第二终端是通信组的成员，所述第一终端是具有中继功能的终端；
处理单元，用于根据所述获取单元得到的组信息与所述第二终端通信。
结合第三方面，在第一种可能的实现方式中，所述第一消息包括所述通信组的标识信息；
所述处理单元还用于，根据所述通信组的标识信息确定所述第一终端是否是所述通信组的成员；
所述获取单元具体用于在所述处理单元确定所述第一终端不是所述通信组的成员时，获取所述通信组对应的组信息。
结合第三方面或第三方面第一种可能的实现方式，在第二种可能的实现方式中，所述终端还包括：
第一发送单元，用于向服务所述第一终端的接近业务ProSe服务器发送包含所述通信组的标识信息的第一请求消息，以便所述ProSe服务器根据所述通信组的标识信息向所述第一终端发送所述通信组对应的组信息。
结合第三方面第二种可能的实现方式，在第三种可能的实现方式中，所述第一发送单元还用于，向服务所述第一终端的ProSe服务器发送包含所述通信组的标识信息的第一请求消息，以便所述ProSe服务器根据所述第一请求消息向所述通信组的标识信息对应的通信组的组服务器发送第二请求消息，并在接收到所述组服务器根据所述第二请求消息向所述ProSe服务器发送的所述组信息后，将所述组信息发送至所述第一终端；
其中，所述第二请求消息用于请求获取所述通信组对应的组信息。
结合第三方面，在第四种可能的实现方式中，所述获取单元用于获取所述通信组对应的组信息具体为，所述获取单元用于接收所述通信组对应的组服务器发送的所述通信组对应的组信息。
结合第三方面第四种可能的实现方式，在第五种可能的实现方式中，所述终端还包括：
第二发送单元，用于向所述通信组归属的组服务器发送第三请求消息，以使所述组服务器在确定所述第一终端不是所述通信组的成员时，向所述第一终端发送所述通信组对应的组信息。
结合第三方面第四种可能的实现方式，在第六种可能的实现方式中，所述获取单元还用于接收所述第二终端发送的第四请求消息；
所述终端还包括：第三发送单元，用于在所述获取单元接收到所述第二终端发送的第四请求消息后，根据所述第四请求消息向所述通信组对应的组服务器发送第五请求消息，以使所述组服务器在根据所述第五请求消息确定所述第一终端不是所述通信组的成员时，向所述 第一终端发送所述通信组对应的组信息；
其中，所述第五请求消息包含所述第一终端的标识信息。
结合第三方面第二至第六种可能的实现方式，在第七种可能的实现方式中，所述组信息包括所述通信组的通信资源信息。
结合第三方面第七种可能的实现方式，在第八种可能的实现方式中，所述组信息还包括所述通信组的媒介访问控制层MAC地址、所述通信组的网络间互联协议IP地址和安全密钥信息中的至少一项。
结合第三方面或第三方面第一种可能的实现方式，在第九种可能的实现方式中，所述通信组对应的组信息包括通信资源信息；
所述终端还包括：第四发送单元，用于向移动性管理实体MME发送第六请求消息，以便所述MME根据所述第六请求消息向基站发送第七请求消息，指示所述基站为所述终端分配所述通信资源信息；
所述获取单元用于获取所述通信组对应的组信息具体为，所述获取单元用于接收所述基站分配的通信资源信息；
所述第四发送单元还用于，向所述第二终端发送所述通信资源信息；
所述处理单元用于根据所述获取单元得到的组信息与所述第二终端通信具体为，所述处理单元用于根据所述通信资源信息与所述第二终端通信。
结合第三方面至第三方面第九种可能的实现方式中的任一种，在第十种可能的实现方式中，所述组信息还包括验证信息；
所述处理单元还用于，在所述获取单元获取所述通信组对应的组信息后，生成验证信息或根据所述组信息得到所述验证信息，并根据所述验证信息验证所述第二终端，并在根据所述验证信息对所述第二终端验证通过后，与所述第二终端通信。
第四方面，提供一种接近业务ProSe服务器，包括：
获取单元，用于在第一终端接收到第二终端发送的第一消息后，接收所述第一终端发送的第一请求消息；其中，所述第一消息用于请求中继服务，所述第二终端是通信组的成员，所述第一消息包括所述 通信组的标识信息，所述第一请求消息用于指示所述ProSe服务器向该第一终端发送该通信组对应的组信息；
组信息获取单元，用于根据所述第一请求消息得到所述通信组对应的组信息；
发送单元，用于根据所述第一请求消息将所述组信息获取单元得到的组信息发送至所述第一终端，以便所述第一终端根据所述组信息与所述第二终端通信。
结合第四方面，在第一种可能的实现方式中，所述发送单元具体用于，根据所述第一请求消息向所述第二终端归属的通信组归属的组服务器发送第二请求消息，以便所述组服务器向所述ProSe服务器发送所述组信息；
所述组信息获取单元具体用于，接收所述组服务器发送的所述组信息；
所述发送单元具体还用于，将所述组信息获取单元接收到的组信息发送至所述第一终端。
结合第四方面或第四方面第一种可能的实现方式，在第二种可能的实现方式中，所述组信息包括所述通信组的通信资源信息。
结合第四方面第二种可能的实现方式，在第三种可能的实现方式中，所述组信息还包括所述通信组的媒介访问控制层MAC地址、所述通信组的网络间互联协议IP地址和安全密钥信息中的至少一项。
通过采用上述方案，第一终端接收第二终端发送的第一消息，在确定该第二终端选择该第一终端作为中继终端时，若该第一终端不是该第二终端所在通信组的成员，第一终端获取该通信组对应的组信息，并根据该组信息与该第二终端通信，这样，在该第一终端与该第二终端不在相同的通信组时，该第一终端可以从网络获取该第二终端所在通信组的组信息，并根据该组信息与该第二终端实现通信，从而实现中继终端(第一终端)和与所述中继终端分别属于不同通信组的远端终端(第二终端)通信。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为本发明实施例提供的一种通信方法的流程示意图；
图2为本发明实施例提供的另一种通信方法的流程示意图；
图3为本发明实施例提供的另一种通信方法的流程示意图；
图4为本发明实施例提供的另一种通信方法的流程示意图；
图5为本发明实施例提供的另一种通信方法的流程示意图；
图6为本发明实施例提供的另一种通信方法的流程示意图；
图7为本发明实施例提供的一种终端的结构示意图；
图8为本发明实施例提供另的一种终端的结构示意图；
图9为本发明实施例提供的另一种终端的结构示意图；
图10为本发明实施例提供的另一种终端的结构示意图；
图11为本发明实施例提供的另一种终端的结构示意图；
图12为本发明实施例提供的一种ProSe服务器的结构示意图；
图13为本发明实施例提供的另一种终端的结构示意图；
图14为本发明实施例提供的另一种ProSe服务器的结构示意图。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
在本发明实施例中使用的术语是仅仅出于描述特定实施例的目的，而非旨在限制本发明。在本发明实施例和所附权利要求书中所使用的单数形式的“一种”、“所述”和“该”也旨在包括多数形式，除非上下文清楚地表示其他含义。还应当理解，本文中使用的术语“和/或”是指并包含一个或多个相关联的列出项目的任何或所有可能组合。
应当理解，尽管在本发明实施例中可能采用术语第一、第二、第三等来描述各种消息、请求和终端，但这些消息、请求和终端不应限于这些术语。这些术语仅用来将消息、请求和终端彼此区分开。例如，在不脱离本发明实施例范围的情况下，第一终端也可以被称为第二终端，类似地，第二终端也可以被称为第一终端。
取决于语境，如在此所使用的词语“如果”或“若”可以被解释成为“在……时”或“当……时”或“响应于确定”或“响应于检测”。类似地，取决于语境，短语“如果确定”或“如果检测(陈述的条件或事件)”可以被解释成为“当确定时”或“响应于确定”或“当检测(陈述的条件或事件)时”或“响应于检测(陈述的条件或事件)”。
本发明实施例提供一种通信的方法，如图1所示，该方法的执行主体为第一终端，该方法包括：
S101、第一终端接收第二终端发送的第一消息。
其中，该第二终端是通信组的成员，该通信组中的成员可以通过组通信的方式实现通信，该第一消息用于请求中继服务，该第一终端是具有中继功能的终端。
具体地，若该第二终端失去网络覆盖，则第一终端通过广播的方式发送第一消息，以寻找存在网络覆盖的终端作为中继终端，该第一终端监听到该第二终端广播的第一消息，其中，该第一终端存在网络覆盖并具备中继能力。
示例地，该第一终端为手机1，该第二终端为手机2，若该手机2由于信号较弱而无法接入通信网络，则该手机2以广播的形式发送 第一消息，该手机1存在网络覆盖，因此可以正常接入通信网络，该手机1监听到该第一消息。
需要说明的是，本发明实施例中描述的第一、第二等类似的说法，没有限定顺序的意思，仅为方便区分而已。
S102、第一终端在确定该第二终端选择该第一终端作为中继终端时，若该第一终端不是该通信组的成员，该第一终端获取该通信组对应的组信息。
具体地，在第二终端确定选择第一终端作为中继终端后，第一终端接收该第二终端发送的通知消息或IP地址请求消息，根据通知消息或IP(Internet Protocol，网络之间互连的协议)地址请求消息确定该第二终端选择该第一终端作为中继终端。
进一步地，该第一消息包括该通信组的标识信息，该第一终端根据该通信组的标识信息确定该第一终端是否是该通信组的成员，第一终端在确定该第一终端不是该通信组的成员时，该第一终端获取该通信组对应的组信息。
具体地，该第一消息包括该通信组的标识信息，在接收到第二终端发送的该第一消息后，该第一终端根据该第一消息得到该标识信息，第一终端中保存了第一终端归属的通信组的标识信息，在确定该第二终端所在通信组的标识信息和该第一终端所在通信组的标识信息不同时，确定该第二终端不是该通信组的成员。
进一步地，该第一终端获取通信组对应的组信息可以有以下三种实现方式。
方式一，该第一终端向服务该第一终端的ProSe(Proximity Services，接近业务)服务器发送包含该通信组的标识信息的第一请求消息，以便该ProSe服务器根据该第一请求消息得到该通信组的标识信息，并根据该通信组的标识信息向该第一终端发送该组信息。
本发明以下实施例中所述的服务该第一终端的Prose服务器指第一终端归属网络的服务该第一终端的Prose服务器。
进一步地，在该第一终端向该ProSe服务器发送第一请求消息 后，该ProSe服务器可以根据该ProSe服务器保存的签约信息验证该第一终端是否可以作为该第二终端所在通信组的中继终端，若验证失败，则向该第一终端发送验证失败消息，终止该过程，若验证成功，确定该第一终端可以作为该第二终端的中继终端，则向该第一终端发送该组信息，其中，该第一请求消息可以为包含请求获取组信息指示的验证请求消息或请求组信息请求消息。
具体地，若该ProSe服务器中配置有该组信息，则该ProSe服务器可以直接将该组信息发送至该第一终端。
可选地，第一终端向服务该第一终端的ProSe服务器发送包含该通信组的标识信息的第一请求消息，以便该ProSe服务器根据该第一请求消息向该通信组的标识信息对应的通信组的组服务器发送第二请求消息，并在接收到该组服务器根据该第二请求消息向该ProSe服务器发送的该组信息后，将该组信息发送至该第一终端，其中，该第二请求消息用于请求获取该通信组对应的组信息。
具体地，在该ProSe服务器根据该ProSe服务器中保存的签约信息验证通过后，若该ProSe服务器没有配置该组信息，则该ProSe服务器根据该第一请求消息向该通信组归属的组服务器发送包含该标识信息的第二请求消息，并在接收到该组服务器根据该标识信息向该ProSe服务器发送的该组信息后，将该组信息发送至该第一终端。
其中，该接近业务服务器ProSe Server还可以称为ProSe Function或PDCF(Proximity Discovery and Communication control Functionality)，是网络侧管理ProSe业务的签约信息和进行验证的实体。
方式二，第一终端接收该通信组对应的组服务器发送的该通信组对应的组信息。
具体地，该第一终端向该通信组归属的组服务器发送第三请求消息，以使该组服务器在确定该第一终端不是该通信组的成员时，向该第一终端发送该通信组对应的组信息。
其中，该第三请求消息可以为第一终端发送的注册请求、验证请 求或通知消息，本发明对该消息类型不作限定。
可选地，在该第一终端接收该通信组对应的组服务器发送的该通信组对应的组信息前，该第一终端在接收到该第二终端发送的第四请求消息后，根据该第四请求消息向该通信组对应的组服务器发送第五请求消息，以使该组服务器在根据该第五请求消息确定该第一终端不是该通信组的成员时，向该第一终端发送该通信组对应的组信息。
其中，该第五请求消息包含该第一终端的标识信息。
具体地，第四请求消息可以是第二终端向对应的组服务器发送的验证请求消息，该第一终端收到第四请求消息后，根据第四请求消息向组服务器发送第五请求消息，该第五请求消息中包含该第一终端的标识信息，使得该组服务器收到第五请求消息后对第二终端进行验证，并在验证通过后，进一步判断该第一终端是否是组成员，在该第一终端不是组成员时将组信息发送到该第一终端。第四请求消息与第五请求消息可以是相同的消息，也可以是不同的消息。
需要说明的是，在上述方式一和方式二中，该组信息包括该通信组的通信资源信息，另外，该组信息还可以包括该通信组的MAC(Media Access Control，媒介访问控制层)地址、该通信组的IP地址和安全密钥信息中的至少一种。
进一步地，当该第一终端采用方式三获取该组信息时，该组信息仅为通信资源信息。
方式三，第一终端向MME(Mobility Management Entity，移动性管理实体)发送第五请求消息，以便该MME根据该第六请求消息向基站发送第七请求消息，指示该基站为该第一终端分配该通信资源信息，该第一终端接收该基站分配的通信资源信息，并在接收该基站分配的通信资源信息后，向该第二终端发送该通信资源信息。
具体地，该第六请求消息可以是通信资源请求消息，MME在接收到该第六请求消息后，验证该第一终端是否可以作为该第二终端所在通信组的中继终端，MME可以向该ProSe服务器发送验证请求消息，以便该ProSe服务器对该第一终端进行验证。
可选地，该MME就可以向该组服务器发送验证请求消息，该验证请求消息包括该第一终端的标识信息和该第二终端所在通信组的标识信息，以便该组服务器对该第一终端进行验证。
进一步地，在验证通过后，MME向基站发送资源分配指令，指示该基站分配通信资源，第一终端接收该基站发送的通信资源信息，并将该通信资源信息发送至该第二终端。
S103、第一终端根据该组信息与该第二终端通信。
进一步地，在第一终端根据该组信息与该第二终端通信前，该第一终端向该第二终端发送验证信息，以验证该第二终端。
具体地，该组信息还包括验证信息。在该第一终端获取该通信组对应的组信息后，该第一终端生成验证信息或根据该组信息得到该验证信息，并根据该验证信息验证该第二终端，并在根据该验证信息对该第二终端验证通过后，与该第二终端通信。
进一步的，第一终端在对该第二终端验证通过后，根据该组信息建立与该第二终端的通信。
具体地，该第一终端可以根据通信资源信息实现与该第二终端的通信，进一步还可以根据该安全密钥信息保护该第一终端与该第二终端间的通信。
进一步地，该第一终端可以实现与该第二终端通信，则该第一终端可以作为第二终端的中继终端，从而实现该第二终端与通信网络的信息交互。
通过采用上述方案，第一终端接收第二终端发送的第一消息，在确定该第二终端选择该第一终端作为中继终端时，若该第一终端不是该第二终端所在通信组的成员，第一终端获取该通信组对应的组信息，并根据该组信息与该第二终端通信，这样，在该第一终端与该第二终端不在相同的通信组时，该第一终端可以从网络获取该第二终端所在通信组的组信息，并根据该组信息与该第二终端实现通信，从而实现中继终端(第一终端)和与该中继终端分别属于不同通信组的远端终端(第二终端)通信。
本发明实施例提供一种通信的方法，如图2所示，该方法的执行主体为ProSe(Proximity Services，接近业务)服务器，该方法包括：
S201、在第一终端接收到第二终端发送的第一消息后，接近业务ProSe服务器接收该第一终端发送的第一请求消息。
其中，该第一消息用于请求中继服务，该第二终端是通信组的成员，该第一消息包括该通信组的标识信息，该第一请求消息用于指示该ProSe服务器向该第一终端发送该通信组对应的组信息。
具体地，第二终端失去网络覆盖，则第二终端可以通过广播的方式发送第一消息，以寻找存在网络覆盖的终端作为中继终端，该第一终端在监听到该第二终端广播的第一消息后，向该ProSe服务器发送包括该标识信息的第一请求消息，则该ProSe服务器接收该第一终端发送的第一请求消息，其中，该第一终端存在网络覆盖并具有中继能力，该第一终端服务于该ProSe服务器。
示例地，示例地，该第一终端为手机1，该第二终端为手机2，若该手机2由于信号较弱而无法接入通信网络，则该手机2以广播的形式发送第一消息，该手机1存在网络覆盖，因此可以正常接入通信网络，该手机1接收该第一消息。
需要说明的是，本发明实施例中描述的第一、第二等类似的说法，没有限定顺序的意思，仅为方便区分而已。
S202、ProSe服务器根据该第一请求消息将该通信组的组信息发送至该第一终端，以便该第一终端根据该组信息与该第二终端通信。
进一步地，在该第一终端向该ProSe服务器发送第一请求消息后，该ProSe服务器可以根据该ProSe服务器中保存的签约信息验证该第一终端是否可以作为该第二终端所在通信组的中继终端，若验证失败，则向该第一终端发送验证失败消息，终止该过程，若验证成功，若验证成功，确定该第一终端可以作为该第二终端的中继终端，则向该第一终端发送该组信息。
具体地，在该ProSe服务器根据该签约信息对该第一终端验证通过后，若该ProSe服务器中配置有该组信息，则该ProSe服务器可以直接将该组信息发送至该第一终端。
可选地，ProSe服务器根据该第一请求消息向该第二终端归属的通信组归属的组服务器发送第二请求消息，以便该组服务器向该ProSe服务器发送该组信息，接收该组服务器发送的该组信息，并将该组信息发送至该第一终端。
具体地，在该ProSe服务器根据该ProSe服务器中保存的签约信息验证通过后，若该ProSe服务器没有配置该组信息，则该ProSe服务器根据该第一请求消息向该通信组归属的服务器发送第二请求消息，以便该组服务器向该ProSe服务器发送该组信息，并在接收到该组服务器根据该标识信息发送的组信息后，将该组信息发送至该第一终端。
需要说明的是，该组信息包括该通信组的通信资源信息，另外，该组信息还可以包括该通信组的MAC(Media Access Control，媒介访问控制层)地址、该通信组的IP(Internet Protocol，网络之间互连的协议)地址和安全密钥信息中的至少一种。
进一步地，该第一终端可以根据通信资源信息实现与该第二终端的通信，并根据该安全密钥信息保护该第一终端与该第二终端间的通信。
具体地，该第一终端可以实现与该第二终端通信，则可以作为中继终端，从而实现该第二终端与通信网络的信息交互。
通过采用上述方案，在第一终端接收到第二终端发送的第一消息后，接近业务ProSe服务器接收该第一终端发送的第一请求消息，并根据该第一请求消息将该组信息发送至该第一终端，以便该第一终端根据该组信息与该第二终端通信，这样，在该第一终端与该第二终端不在相同的通信组时，该第一终端可以从网络获取组信息，并根据该组信息与该第二终端实现通信，从而与不同用户组的终端通信。
本发明实施例提供一种通信的方法，如图3所示，该方法包括：
S301、远端终端广播中继终端寻找消息，以请求中继服务。
其中，该远端终端失去网络覆盖，该远端终端是通信组的成员，该通信组的成员间可以通过组通信的方式通信。
具体地，该远端终端失去网络覆盖，无法与网络通信，则该远端终端广播消息，以寻找存在网络覆盖的终端作为中继终端。中继终端寻找消息中可包含远端终端所在通信组的标识信息，标识信息可以使用组标识group ID(Identity，身份标识号)形式或group ID与应用标识的形式等。
S302、第一终端监听到该中继终端寻找消息，并向该远端终端发送响应消息。
其中，该第一终端存在网络覆盖并可作为中继终端。
具体地，存在网络覆盖的第一终端在接收到该远端终端发送的中继终端寻找消息后，向该远端终端发送响应消息，响应消息指示该第一终端可以作为中继终端。
需要说明的是，本发明实施例中描述的第一、第二等类似的说法，没有限定顺序的意思，仅为方便区分而已。
S303、远端终端向该第一终端发送中继业务请求消息。
具体地，远端终端在接收到至少一条响应消息后，若根据预设策略确定选择第一终端为中继终端，则向该第一终端发送中继业务请求消息。
其中，该预设策略可以是在该至少一条响应消息中选择信号强度最大的响应消息对应的终端为中继终端，该中继业务请求消息可以是包含选择第一终端作为中继终端指示信息的通知，也可以是远端终端发送的获取IP(Internet Protocol，网络之间互连的协议)地址请求消息，以此通知第一终端该远端终端已选择该第一终端作为中继终端进行中继服务，本发明对该消息的具体类型不作限定。
需要说明的是，远端终端选则该第一终端作为中继终端的过程，还可以是远端终端监听到的至少一个存在网络覆盖的终端广播的信 号，并根据预设策略确定选择第一终端为中继终端，则向该第一终端发送中继业务请求消息，本发明实施例对此不作限定。
另外，远端终端向第一终端发送的中继业务请求消息中包含远端终端所在通信组的标识信息，本发明实施例对此不作限定。
S304、第一终端在接收到该中继业务请求消息后，若根据该标识信息确定该第一终端不属于该通信组，向服务第一终端的ProSe(Proximity Services，接近业务)服务器发送第一请求消息。
具体地，第一终端在获取该通信组的标识信息后，该第一终端中预保存了其所在组的标识信息，在确定该远端终端属于的通信组的标识信息与该第一终端保存的标识信息不同时，确定该第一终端不属于该远端终端属于的通信组，则第一终端向服务第一终端的ProSe服务器发送第一请求消息，请求获取该远端终端属于的通信组的组信息，以便与该远端终端通信。
其中，该第一请求消息包括该通信组的标识信息，以使得ProSe服务器根据通信组的标识信息返回组信息。
具体地，该组信息包括从网络获取的该通信组的通信资源信息，还可以包括该通信组的的MAC(Media Access Control，媒介访问控制层)地址、该通信组的IP地址、安全密钥信息的其中的一项或多项，该安全密钥信息可以是用于组通信的安全密钥和用于验证远端终端的密钥中的任何一种或两种，该通信资源信息可以为收发组数据的频段信息。
S305、ProSe服务器在接收到该第一请求消息后，向通信组归属的组服务器发送第二请求消息。
具体地，ProSe服务器在根据该签约信息确定该第一终端可以作为该远端终端属于的通信组的中继终端后，向该远端终端属于的通信组归属的组服务器发送第二请求消息，请求该组服务器将该组信息发送至该ProSe服务器。
S306、组服务器根据该第二请求消息将组信息发送至该ProSe服务器。
具体地，该第二请求消息可包括该通信组的标识信息，该组服务器在接收到该ProSe服务器发送的第二请求消息后，将对应的组信息发送至该ProSe服务器。
需要说明的是，ProSe服务器在接收到该第一终端发送的第一请求消息后，可以根据该第一请求消息对该第一终端进行验证，验证该第一终端是否可以作为该远端终端所在通信组的中继终端，该验证过程可以由ProSe服务器完成，也可以由组服务器完成，本发明实施例对此不作限定。
需要说明的是，上述步骤S305至S306中，ProSe服务器向该组服务器请求该组信息，并在接收到该组信息后执行以下步骤S307，此外可选的，若该ProSe服务器中预设配置有该组信息，则该ProSe服务器可以直接根据该第一请求消息中包含的标识信息确定对应的组信息，并执行以下步骤S307。
S307、ProSe服务器将该组信息发送至该第一终端。
具体地，该ProSe服务器根据该第一请求消息将该组信息发送至第一终端。
S308、第一终端在获取该组信息后，向该远端终端发送密钥信息。
该组信息可以包括密钥信息，第一终端在接收到该组信息后，根据该组信息获取该密钥信息，并将该密钥信息发送至该远端终端。
需要说明的是，若该组信息包括该密钥信息，则第一终端可以根据该组信息获取该密钥信息，此外可选的，该第一终端也可以生成密钥信息，本发明实施例对此不作限定。
S309、远端终端根据该密钥信息向该第一终端发送验证消息。
远端终端在接收到该第一终端发送的密钥信息后，根据该密钥信息向该第一终端发送验证消息。
S310、第一终端根据该验证消息验证该远端终端，并在验证通过后，根据该组信息与该远端终端通信。
具体地，该第一终端可以根据该远端终端发送的验证消息中的信息验证该远端终端，在对该远端终端验证通过后，第一终端根据该组 信息与该远端终端通信。
进一步地，第一终端为该远端终端分配IP地址，并在为该远端终端分配IP地址后，通过与该远端终端的通信实现该远端终端与网络间的通信。
通过采用上述方案，第一终端接收远端终端发送的中继业务请求消息，在确定该第一终端不是该通信组的成员时，获取该通信组对应的组信息，并根据该组信息与该远端终端通信，这样，在第一终端与该远端终端不在相同的通信组时，第一终端可以从网络获取组信息，从而与不同通信组的终端通信。
需要说明的是，对于上述方法实施例，为了简单描述，故将其都表述为一系列的动作组合，但是本领域技术人员应该知悉，本发明并不受所描述的动作顺序的限制。其次，本领域技术人员也应该知悉，说明书中所描述的实施例均属于优选实施例，所涉及的动作和模块并不一定是本发明所必须的。
本发明实施例提供一种通信的方法，如图4所示，该方法包括：
S401、远端终端广播中继终端寻找消息，以请求中继服务。
其中，该远端终端失去网络覆盖，该远端终端是通信组的成员，该通信组的成员间可以通过组通信的方式通信。
具体地，该远端终端失去网络覆盖，无法与网络通信，则该远端终端广播消息，以寻找存在网络覆盖的终端作为中继终端。
S402、第一终端监听到该中继终端寻找消息，并向该远端终端发送响应消息。
其中，该第一终端存在网络覆盖并可作为中继终端。
具体地，存在网络覆盖的第一终端在接收到该远端终端发送的中继终端寻找消息后，向该远端终端发送响应消息，响应消息指示该第一终端可以作为中继终端。
在响应消息中还可包括第一终端的标识信息，如MSISDN(Mobile Subscriber International ISDN(Integrated Service Digital  Network，综合业务数字网)/PSTN(Public Switched Telephone Network，公共交换电话网络)number，移动用户号码)。
需要说明的是，本发明实施例中描述的第一、第二等类似的说法，没有限定顺序的意思，仅为方便区分而已。
S403、远端终端选择第一终端作为中继终端。
具体地，远端终端在接收到至少一条响应消息后，根据预设策略确定选择第一终端为中继终端，并通知该第一终端。其中，该预设策略可以是在该至少一条响应消息中选择信号强度最大的响应消息对应的终端为中继终端。
需要说明的是，远端终端选则该第一终端作为中继终端的过程，还可以是远端终端监听到的至少一个存在网络覆盖的终端广播的信号，并根据预设策略确定选择第一终端为中继终端，则向该第一终端发送中继业务请求消息，本发明实施例对此不作限定。存在网络覆盖终端的广播信号中可包括该终端的标识信息，如MSISDN。
S404、第一终端为该远端终端分配IP(Internet Protocol，网络之间互连的协议)地址。
具体地，第一终端可以在接收到远端终端的IP地址分配请求(未在图中示出)后，按照现有IP地址分配流程为远端终端分配IP地址。
S405、远端终端在获取到该第一终端分配的IP地址后，向通信组归属的组服务器发送验证请求消息。
其中，该验证请求消息包括该第一终端的标识信息和该远端终端的标识信息，以使得组服务器在根据远端终端的标识信息验证远端终端后，进一步判断该第一终端是否是该远端终端所在通信组的成员。
具体的，第一终端接收该远端终端发送的验证请求消息并直接转发至组服务器，以使得该组服务器根据该远端终端的标识信息验证该远端终端，并在验证该远端终端后，进一步判断该第一终端是否是该远端终端所在通信组的成员。
可选的，第一终端接收该远端终端发送的第一验证请求消息，并向组服务器发送第二验证请求消息，其中，该第二验证请求消息中包 含该第一终端的标识信息和该远端终端的标识信息，以使得组服务器根据远端终端的标识验证远端终端，并在验证远端终端后，进一步判断该第一终端是否是该远端终端所在通信组的成员。该第二验证请求消息可以与该第一验证请求消息相同或不同，当两者不同时，该第二验证请求消息可以是根据该第一验证请求消息得到的。
S406、组服务器根据该验证请求消息验证该远端终端。
进一步地，组服务器在根据该验证请求消息对该远端终端验证通过后，向远端终端返回验证响应消息，指示对该远端终端验证成功。对应上述步骤S405的两种情况，当远端终端通过第一终端转发向组服务器发送验证请求消息时，该验证响应消息可以直接发送到远端终端或通过所述第一终端转发到远端终端；当远端终端向第一终端发送第一验证请求，进而使得第一终端根据第一验证请求发送第二验证请求到组服务器时，组服务器发送第二验证响应消息至第一终端，使得第一终端根据第二验证响应消息向远端终端发送第一验证响应消息，以指示对该远端终端验证成功，以上组服务器向远端终端返回验证消息的过程未在图中示出。
具体地，组服务器对该远端终端进行验证，以确定该远端终端属于该通信组。
需要说明的是，组服务器在确定该远端终端属于该通信组后，还可以对该第一终端进行验证，验证该第一终端是否可以作为该远端终端所在通信组的中继终端，该验证过程可以由组服务器完成，也可以由ProSe(Proximity Services，接近业务)服务器完成，本发明实施例对此不作限定。
S407、组服务器确定该第一终端不属于该通信组。
具体的，组服务器根据第一终端的标识信息判断该第一终端是否属于该通信组。在确定该第一终端不属于该通信组时，执行后续步骤S408至S410。
S408、组服务器在确定该第一终端不属于该通信组时，向服务该第一终端的ProSe服务器发送组信息请求消息。
具体地，该组服务器向该第一终端归属的ProSe服务器发送包含该通信组的标识信息的组信息请求消息。
S409、ProSe服务器根据该组信息请求消息向该组服务器发送组信息。
具体地，该组信息请求消息包括该通信组的标识信息，ProSe服务器在接收到该组信息请求消息后，将该标识信息对应的组信息发送至该组服务器。
可选地，若该组服务器中保存有该组信息，则可以不执行上述步骤S408至S409，直接执行以下步骤S410。
S410、组服务器将组信息发送至该第一终端。
其中，该组信息包括从网络获取的该通信组的通信资源信息，还可包含该通信组的MAC(Media Access Control，媒介访问控制层)地址、该通信组的IP地址、安全密钥信息的其中的一项或多项，该安全密钥信息是用于组通信的安全密钥，该通信资源信息是收发组数据的频段信息。
需要说明的是，该组服务器可以向该第一终端发送包含该组信息的数据包，该组服务器也可以令服务该第一终端的ProSe服务器将该组信息发送至该第一终端，本发明实施例对此不作限定。
需要说明的是，本发明实施例中，该组服务器对第一终端的感知可以是在该远端终端向组服务器发送验证请求消息时携带该第一终端的标识信息实现，也可以通过该第一终端向该组服务器注册、验证或发送通知消息实现，本发明实施例对此不作限定。
S411、第一终端根据该组信息与该远端终端通信。
具体地，执行远端终端通过中继终端接入网络的其他步骤，并根据所获得的信息实现远端终端通过中继终端与网络通信。组信息中包括通信资源信息，该第一终端和该远端终端可以通过该通信资源信息与该远端终端通信，并通过与该远端终端的通信实现该远端终端与网络间的通信。
通过采用上述方案，第一终端接收远端终端发送的中继业务请求消息，在确定该第一终端不是该远端终端属于的通信组的成员时，第一终端获取该通信组对应的组信息，并根据该组信息与该远端终端通信，这样，在第一终端与该远端终端不在相同的通信组时，第一终端可以从网络获取组信息，从而与不同通信组的终端通信。
需要说明的是，对于上述方法实施例，为了简单描述，故将其都表述为一系列的动作组合，但是本领域技术人员应该知悉，本发明并不受所描述的动作顺序的限制。其次，本领域技术人员也应该知悉，说明书中所描述的实施例均属于优选实施例，所涉及的动作和模块并不一定是本发明所必须的。
本发明实施例提供一种通信的方法，如图5所示，该方法包括：
S501、远端终端广播中继终端寻找消息，以请求中继服务。
其中，该远端终端失去网络覆盖，该远端终端是通信组的成员，该通信组的成员间可以通过组通信的方式通信。
具体地，该远端终端失去网络覆盖，无法与网络通信，则该远端终端广播消息，以寻找存在网络覆盖的终端作为中继终端。
S502、第一终端监听到该中继终端寻找消息，并向该远端终端发送响应消息。
其中，该第一终端存在网络覆盖并可作为中继终端。
具体地，存在网络覆盖的第一终端在接收到该远端终端发送的中继终端寻找消息后，向该远端终端发送响应消息，其中，该响应消息用来告知远端终端该第一终端可以作为中继终端。
需要说明的是，本发明实施例中描述的第一、第二等类似的说法，没有限定顺序的意思，仅为方便区分而已。
S503、远端终端向该第一终端发送中继业务请求消息。
具体地，远端终端在接收到至少一条响应消息后，若根据预设策略确定选择第一终端为中继终端，则向该第一终端发送中继业务请求消息。其中，该预设策略可以是在该至少一条响应消息中选择信号强 度最大的响应消息对应的终端为中继终端。中继业务请求消息可以是包含选择第一终端作为中继终端指示信息的通知，也可以是远端终端发送获取IP(Internet Protocol，网络之间互连的协议)地址请求消息，以此通知第一终端该远端终端已选择该第一终端作为中继终端进行中继服务。本发明实施例对该消息的具体类型不作限定。
需要说明的是，远端终端选则该第一终端作为中继终端的过程，还可以是远端终端监听到的至少一个存在网络覆盖的终端广播的信号，并根据预设策略确定选择第一终端为中继终端，则向该第一终端发送中继业务请求消息，本发明实施例对此不作限定。
S504、第一终端为该远端终端分配IP地址。
具体地，第一终端在接收到远端终端的IP地址分配请求后，按照现有IP地址分配流程为远端终端分配IP地址。
S505、远端终端在获取到该第一终端分配的IP地址后，向通信组归属的组服务器发送验证请求消息。
其中，该验证请求消息包括该第一终端的标识信息和该远端终端的标识信息，以使得组服务器在根据远端终端的标识信息验证远端终端后，进一步判断该第一终端是否是该远端终端所在通信组的成员。
具体的，第一终端接收验证请求消息并直接转发至组服务器，以使得该组服务器根据该远端终端的标识信息验证该远端终端，并在验证该远端终端后，进一步判断该第一终端是否是该远端终端所在通信组的成员。
可选的，第一终端接收该远端终端发送的第一验证请求消息，并向组服务器发送第二验证请求消息，其中，该第二验证请求消息中包含第一终端的标识信息和该远端终端的标识信息，以使得组服务器根据远端终端的标识验证远端终端，并在验证远端终端后，进一步判断该第一终端是否是该远端终端所在通信组的成员。该第二验证请求消息可以与该第一验证请求消息相同或不同，当两者不同时，该第二验证请求消息可以是根据该第一验证请求消息得到的。
S506、组服务器根据该验证请求消息验证该远端终端。
其中，组服务器在根据该验证请求消息对该远端终端验证通过后，向远端终端返回验证响应消息，指示对该远端终端验证成功。若远端终端验证通过，则执行后续过程，否则终止该业务过程。对应上述步骤S505的两种情况，当远端终端通过第一终端的转发向组服务器发送验证请求消息时，该验证响应消息可以直接发送到远端终端或通过所述第一终端转发到远端终端；当远端终端向第一终端发送第一验证请求，进而使得第一终端根据第一验证请求发送第二验证请求到组服务器时，组服务器发送第二验证响应消息至第一终端，使得第一终端根据第二验证响应消息向远端终端发送第一验证响应消息，以指示对该远端终端验证成功，以上组服务器向远端终端返回验证响应消息的过程未在图中示出。
具体地，组服务器对该远端终端进行验证，以确定该远端终端属于该通信组。
需要说明的是，组服务器在确定该远端终端属于该通信组后，还可以对该第一终端进行验证，验证该第一终端是否可以作为该远端终端所在通信组的中继终端，该验证过程可以由组服务器完成，也可以由ProSe(Proximity Services，接近业务)服务器完成，本发明实施例对此不作限定。
S507、第一终端在确定该远端终端验证通过后，向远端终端发送组信息请求消息。
具体地，第一终端根据第二验证响应消息确定该远端终端验证通过后，或在远端终端接收到验证响应消息确定验证通过后，向第一终端发送通知消息，以通知第一终端该远端终端验证通过，在确定该远端终端属于该通信组后，向该远端终端发送组信息请求消息，以便该远端终端向该第一终端发送该通信组的组信息。
进一步地，该中继业务请求消息包含该通信组的标识信息，第一终端在接受到该中继业务请求消息后，获取该通信组的标识信息，该第一终端中预保存了其所在组的标识信息，在确定该远端终端属于的通信组的标识信息与该第一终端保存的标识信息不同时，确定该第一 终端不属于该远端终端属于的通信组，则第一终端向该远端终端发送组信息请求消息。
其中，该组信息包括该通信组的通信资源信息，还可包含该通信组的MAC(Media Access Control，媒介访问控制层)地址、该通信组的IP地址、安全密钥信息的其中的一项或多项。该安全密钥信息用于组通信的安全密钥。该通信资源信息是指收发组数据的频段信息。
需要说明的是，该远端终端属于的通信组的标识信息可以是该远端设备广播的中继终端寻找消息中包括的，也可以是该远端终端发送的中继业务请求消息中包括的，本发明实施例对此不作限定。
S508、远端终端根据该组信息请求消息向该第一终端发送该组信息。
具体地，远端终端在接收到该第一终端发送的组信息请求消息后，根据该组信息请求消息向该第一终端发送该组信息。
S509、第一终端根据该组信息与该远端终端通信。
具体地，执行远端终端通过中继终端接入网络的其他步骤，并根据所获得的信息实现远端终端通过中继终端与网络通信。该组信息中包括通信资源信息，该第一终端和该远端终端可以通过该通信资源信息与该远端终端通信，并通过与该远端终端的通信实现该远端终端与网络间的通信。
通过采用上述方案，第一终端接收远端终端发送的中继业务请求，在确定该第一终端不是该远端终端属于的通信组的成员时，第一终端获取该通信组对应的组信息，并根据该组信息与该远端终端通信，这样，在第一终端与该远端终端不在相同的通信组时，第一终端可以从该远端终端获取该组信息，从而与不同通信组的终端通信。
需要说明的是，对于上述方法实施例，为了简单描述，故将其都表述为一系列的动作组合，但是本领域技术人员应该知悉，本发明并不受所描述的动作顺序的限制。其次，本领域技术人员也应该知悉，说明书中所描述的实施例均属于优选实施例，所涉及的动作和模块并 不一定是本发明所必须的。
本发明实施例提供一种通信的方法，如图6所示，该方法包括：
S601、远端终端广播中继终端寻找消息，以请求中继服务。
其中，该远端终端失去网络覆盖，该远端终端是通信组的成员，该通信组的成员间可以通过组通信的方式通信。
具体地，该远端终端失去网络覆盖，无法与网络通信，则该远端终端广播消息，以寻找存在网络覆盖的终端作为中继终端。
S602、第一终端监听到该中继终端寻找消息，并向该远端终端发送响应消息。
其中，该第一终端存在网络覆盖，并可作为中继终端。
具体地，存在网络覆盖的第一终端在接收到该远端终端发送的中继终端寻找消息后，向该远端终端发送响应消息，响应消息指示该第一终端可以作为中继终端。
需要说明的是，本发明实施例中描述的第一、第二等类似的说法，没有限定顺序的意思，仅为方便区分而已。
S603、远端终端向该第一终端发送中继业务请求消息。
具体地，远端终端在接收到至少一条响应消息后，若根据预设策略确定选择第一终端为中继终端，则向该第一终端发送中继业务请求消息。其中，该预设策略可以是在该至少一条响应消息中选择信号强度最大的响应消息对应的终端为中继终端。中继业务请求消息可以是包含选择第一终端作为中继终端指示信息的通知，也可以是远端终端发送获取IP(Internet Protocol，网络之间互连的协议)地址请求消息，以此通知第一终端该远端终端已选择该第一终端作为中继终端进行中继服务。本发明实施例对该消息的具体类型不作限定。
需要说明的是，远端终端选则该第一终端作为中继终端的过程，还可以是远端终端监听到的至少一个存在网络覆盖的终端广播的信号，并根据预设策略确定选择第一终端为中继终端，则向该第一终端发送中继业务请求消息，本发明实施例对此不作限定。
进一步地，第一终端在接收到该中继业务请求消息后，若该中继业务请求消息包含该通信组的标识信息，第一终端在接受到该中继业务请求消息后，获取该通信组的标识信息，该第一终端中预保存了其所在组的标识信息，在确定该远端终端属于的通信组的标识信息与该第一终端保存的标识信息不同时，确定该第一终端不属于该远端终端属于的通信组，则第一终端获取该第一终端与该远端终端通信的通信资源信息，若该第一终端不能根据该第一终端的预设配置信息中指定该通信资源信息时，执行以下步骤S604至S611。
需要说明的是，该远端终端属于的通信组的标识信息可以是该远端设备广播的中继终端寻找消息中包括的，也可以是该远端终端发送的中继业务请求消息中包括的，本发明实施例对此不作限定。
另外，第一终端在执行上述步骤S601至S603后，还可以执行IP地址分配、验证远端终端过程，具体参考上述实施例中对应的描述，此处不再赘述。
S604、第一终端在接收到该中继业务请求消息后，若根据该标识信息确定该第一终端不属于该通信组，向MME(Mobility Management Entity，移动性管理实体)发送通信资源请求消息。
具体地，在通信资源请求消息中可包含远端终端所在通信组的标识及第一终端标识，通信组的标识可以是group ID(Identity，身份标识号)或group ID+APP(Application，应用程序)ID的形式。
S605、MME根据该通信资源请求消息向服务第一终端的ProSe(Proximity Services，接近业务)服务器发送验证请求消息，以验证第一终端是否可以为通信组做中继终端。
进一步地，ProSe服务器可以根据该ProSe服务器中保存的签约信息验证该第一终端，也可以令该远端设备属于的通信组归属的组服务器验证该第一终端，若该ProSe服务器根据该签约信息验证该第一终端，则执行以下步骤S606。
S606、ProSe服务器验证该第一终端。
具体地，ProSe服务器可以基于该ProSe服务器中保存的签约信 息验证该第一终端。
可选的，若ProSe服务器请求该远端设备归属的组服务器验证该第一终端，则执行以下步骤S607至S608。
S607、ProSe服务器向该组服务器发送该验证请求消息。
具体地，第一终端向MME发送的资源请求信息中包括第一终端的标识信息和该远端终端属于的通信组的标识信息，该MME向ProSe服务器发送的验证请求消息中包括该第一终端的标识信息和该远端终端属于的通信组的标识信息，则ProSe服务器向组服务器发送包括该第一终端的标识信息和该远端终端属于的通信组的标识信息。
S608、组服务器验证该第一终端，并在验证通过后，向该ProSe服务器发送响应消息。
具体地，组服务器基于组信息验证该第一终端，并在验证通过后，向该ProSe服务器发送响应消息，若验证失败，则向该ProSe服务器发送验证失败消息。
S609、ProSe服务器向MME发送响应消息。
具体地，ProSe服务器在验证该第一终端通过，或接收到该组服务器发送的响应消息后，向MME发送响应消息，通知该MME第一终端验证成功，若验证失败，则向MME发送验证失败消息。
S610、MME向基站发送通信资源分配指令。
具体地，在确定该第一终端验证成功后，MME想基站发送通信资源分配指令，指示该基站为该第一终端和远端终端的通信分配通信资源。其中，该通信资源分配指令可以是初始上下文建立请求消息(initial context setup request)，在该初始上下文建立请求消息中包含接近业务组通信指示信息。
S611、基站根据该通信资源分配指令分配通信资源，并将对应的通信资源信息发送至第一终端。
具体地，基站在接收到该MME发送的通信资源分配指令后，根据该通信资源分配指令为该第一终端和远端终端的通信分配通信资源，并在分配该通信资源后，将该通信资源对应的通信资源信息发送至该 第一终端。可通过RRC(Radio Resource Control，无线资源控制协议)连接重配消息(RRC connection reconfiguration message)将分配的通信资源信息发送到第一终端。
可选地，在该第一终端根据该第一终端的预设配置信息指定该通信资源信息时，执行以下步骤S6040。
S6040、第一终端在接收到该中继业务请求消息后，确定该第一终端不属于该通信组，并根据该第一终端的预设配置信息得到与远端终端进行组通信的通信资源信息。
具体地，该第一终端可以根据该第一终端的预设配置信息指定与远端终端进行组通信的通信资源信息。
S612、第一终端将组信息发送至该远端终端。
具体地，该组信息包括第一终端指定或从网络获取的该通信组的通信资源信息，还可以包括由第一终端指定与远端终端组通信所需要的该通信组的MAC(Media Access Control，媒介访问控制层)地址、该通信组的IP地址或安全密钥信息，第一终端可基于预配信息分配上述信息。该安全密钥信息是组通信的安全密钥，该通信资源信息是数据通信使用的频段信息。
S613、第一终端根据该组信息与该远端终端通信。
具体地，第一终端根据获得的组信息实现远端终端通过中继终端与网络通信。该组信息中包括通信资源信息，该第一终端和该远端终端可以通过该通信资源信息与该远端终端通信，并通过与该远端终端的通信实现该远端终端与网络间的通信。
通过采用上述方案，第一终端接收远端终端发送的中继业务请求消息，在确定该第一终端不是该远端终端属于的通信组的成员时，第一终端指定通信信息或申请通信资源，从而得到组信息，并将组信息发送至远端终端，根据该组信息与远端终端通信，这样，在第一终端与该远端终端不在相同的通信组时，第一终端可以从网络获取组信息，从而与不同通信组的终端通信。
需要说明的是，对于上述方法实施例，为了简单描述，故将其都 表述为一系列的动作组合，但是本领域技术人员应该知悉，本发明并不受所描述的动作顺序的限制。其次，本领域技术人员也应该知悉，说明书中所描述的实施例均属于优选实施例，所涉及的动作和模块并不一定是本发明所必须的。
本发明实施例提供一种终端70，如图7所示，该终端70包括：
获取单元71，用于接收第二终端发送的第一消息，并在确定所述第二终端选择所述终端作为中继终端时，若所述终端不是所述通信组的成员，获取所述通信组对应的组信息。
其中，所述第一消息用于请求中继服务，所述第二终端是通信组的成员，所述终端是具有中继功能的终端。
处理单元72，用于根据所述获取单元71得到的组信息与所述第二终端通信。
具体地，若第二终端失去网络覆盖，则第二终端通过广播的方式发送第一消息，以寻找存在网络覆盖的终端作为中继终端，该终端接收该第二终端广播的第一消息，其中，该终端存在网络覆盖。
示例地，该终端为手机1，该第二终端为手机2，若该手机2由于信号较弱而无法接入通信网络，则该手机2以广播的形式发送第一消息，该手机1存在网络覆盖，因此可以正常接入通信网络，该手机1接收该第一消息。
可选地，该第一消息包括该通信组的标识信息；
该处理单元72还用于，根据该通信组的标识信息确定该终端是否是该通信组的成员；
该获取单元71具体用于在该处理单元72确定该终端不是该通信组的成员时，获取该通信组对应的组信息。
具体地，该第一消息中包含有该第二终端所在通信组的标识信息，该终端可以根据接收到的该第一消息得到该通信组的标识信息，并获取该终端归属的通信组的标识信息，在确定该第二终端所在通信组的标识信息和该终端所在通信组的标识信息不同时，确定该第二终 端不是该通信组的成员。
进一步地，该终端可以向该终端归属的接近业务ProSe(Proximity Services，接近业务)服务器请求该组信息，也可以向该通信组归属的组服务器请求该组信息，还可以向该MME(Mobility Management Entity，移动性管理实体)请求该组信息。
可选地，如图8所示，该终端70还包括：
第一发送单元73，用于向服务该终端的ProSe服务器发送包含该通信组的标识信息的第一请求消息，以便该ProSe服务器根据该通信组的标识信息向该终端发送该通信组对应的组信息。
进一步地，在该终端向该ProSe服务器发送第一请求消息后，该ProSe服务器可以根据该ProSe服务器中保存的签约信息验证该终端是否可以作为该第二终端所在通信组的中继终端，若验证失败，则向该终端发送验证失败消息，若验证成功，确定该终端可以作为该第二终端的中继终端，则向该终端发送该组信息，则向该终端发送该组信息。
具体地，在该ProSe服务器根据该ProSe服务器中保存的签约信息验证通过后，若该ProSe服务器中配置有该组信息，则该ProSe服务器可以直接将该组信息发送至该终端。
可选地，该第一发送单元73还用于，向服务该终端的ProSe服务器发送包含该通信组的标识信息的第一请求消息，以便该ProSe服务器根据该第一请求消息向该通信组的标识信息对应的通信组的组服务器发送第二请求消息，并在接收到该组服务器根据该第二请求消息向该ProSe服务器发送的该组信息后，将该组信息发送至该终端。
其中，该第二请求消息用于请求获取该通信组对应的组信息。
可选地，该终端可以向该通信组归属的组服务器发送第三请求消息，以便该组服务器将该组信息发送至该终端。
可选地，该获取单元71用于获取所述通信组对应的组信息具体为，该获取单元71用于接收该通信组对应的组服务器发送的该通信 组对应的组信息。
进一步地，如图9所示，该终端70还包括：
第二发送单元74，用于向该通信组归属的组服务器发送第三请求消息，以使该组服务器在确定该终端不是该通信组的成员时，向该终端发送该通信组对应的组信息。
可选地，如图10所示，所述获取单元71还用于接收所述第二终端发送的第四请求消息。
该终端70还包括：第二发送单元75，用于在该获取单元71接收到该第二终端发送的第四请求消息后，根据该第四请求消息向该通信组对应的组服务器发送第五请求消息，以使该组服务器在根据该第五请求消息确定该终端不是该通信组的成员时，向该终端发送该通信组对应的组信息。
其中，该第五请求消息包含该终端的标识信息。
需要说明的是，该组信息包括该通信组的通信资源信息，另外，该组信息还可以包括该通信组的MAC(Media Access Control，媒介访问控制层)地址、该通信组的IP(Internet Protocol，网络之间互连的协议)地址或安全密钥信息，终端可基于预配信息分配上述信息。该安全密钥信息是组通信的安全密钥，该通信资源信息是数据通信使用的频段信息。
可选地，如图11所示，该通信组对应的组信息包括通信资源信息。
该终端70还包括：第四发送单元76，用于向移动性管理实体MME发送第六请求消息，以便该MME根据该第六请求消息向基站发送第七请求消息，指示该基站为该终端分配该通信资源信息。
该获取单元71用于获取所述通信组对应的组信息具体为，该获取单元71用于接收该基站分配的通信资源信息；
该第四发送单元76还用于，向该第二终端发送该通信资源信息。
所述处理单元72用于根据所述获取单元71得到的组信息与所述第二终端通信具体为，所述处理单元72用于根据所述通信资源信息 与所述第二终端通信。
具体地，MME在接收到该第六请求消息后，验证该终端是否可以作为该第二终端所在通信组的中继终端，MME可以向该ProSe服务器发送验证请求消息，该验证请求消息中包括该终端的签约信息，以便该ProSe服务器对该终端进行验证。
可选地，该MME可以向该组服务器发送验证请求消息，该验证请求消息包括该终端的标识信息和该第二终端所在通信组的标识信息，以便该组服务器对该终端进行验证。
具体地，在验证通过后，MME向基站发送资源分配指令，指示该基站分配通信资源，终端接收该基站发送的通信资源信息，并将该通信资源信息发送至该第二终端。
进一步地，在终端根据该组信息与该第二终端通信前，该终端向该第二终端发送验证信息，以验证该第二终端。
具体地，该组信息包括验证信息，该处理单元72还用于，在该获取单元获取该通信组对应的组信息后，生成验证信息或根据该组信息得到该验证信息，并根据该验证信息验证该第二终端，并在根据该验证信息对该第二终端验证通过后，与该第二终端通信。
进一步的，终端在对该第二终端验证通过后，根据该组信息建立与该第二终端的通信。
具体地，该终端可以根据该通信资源信息实现与该第二终端的通信，并根据该安全密钥信息保护该终端与该第二终端间的通信。
进一步地，该终端可以实现与该第二终端通信，则可以作为中继终端，从而实现该第二终端与通信网络的信息交互。
通过采用上述终端，终端接收第二终端发送的第一消息，在确定该终端不是该通信组的成员时，获取该通信组对应的组信息，并根据该组信息与该第二终端通信，这样，在终端与该第二终端不在相同的通信组时，终端可以向网络申请通信资源，从而与不同用户组的终端通信。
所属本领域的技术人员可以清楚地了解到，为描述的方便和简 洁，上述描述的终端的具体工作过程和描述，可以参考前述方法实施例中的对应过程，在此不再赘述。
本发明实施例提供一种接近业务ProSe(Proximity Services，接近业务)服务器120，如图12所示，该ProSe服务器120包括：
接收单元121，用于在第一终端接收到第二终端发送的第一消息后，接收该第一终端发送的第一请求消息。
其中，该第一消息用于请求中继服务，该第二终端是通信组的成员，该第一消息包括该通信组的标识信息，该第一请求消息用于指示该ProSe服务器向该第一终端发送该通信组对应的组信息。
组信息获取单元122，用于根据该第一请求消息得到该通信组对应的组信息。
发送单元123，用于根据该第一请求消息将该组信息获取单元122得到的组信息发送至该第一终端，以便该第一终端根据该组信息与该第二终端通信。
具体地，若第二终端失去网络覆盖，则第二终端通过广播的方式发送第一消息，以寻找存在网络覆盖的终端作为中继终端，该第一终端在接收该第二终端广播的第一消息后，向该ProSe服务器发送第一请求消息，则该ProSe服务器接受该第一终端发送的第一请求消息。其中，该第一终端存在网络覆盖，该第一终端归属于该ProSe服务器。
进一步地，在该第一终端向该ProSe服务器发送第一请求消息后，该ProSe服务器可以根据该ProSe服务器中保存的签约信息验证该第一终端是否可以作为该第二终端所在通信组的中继终端，若验证失败，则向该第一终端发送验证失败消息，若验证成功，则向该第一终端发送该组信息。
具体地，在该ProSe服务器根据该签约信息对第一终端验证通过后，若该ProSe服务器中配置有该组信息，则该ProSe服务器可以直接将该组信息发送至该第一终端。
需要说明的是，该组信息包括该通信组的通信资源信息，另外， 该组信息还可以包括该通信组的MAC(Media Access Control，媒介访问控制层)地址、该通信组的IP(Internet Protocol，网络之间互连的协议)地址或安全密钥信息，第一终端可基于预配信息分配上述信息。该安全密钥信息是组通信的安全密钥，该通信资源信息是数据通信使用的频段信息。
可选地，该发送单元123具体用于，根据该第一请求消息向该第二终端归属的通信组归属的组服务器发送第二请求消息，以便该组服务器向该ProSe服务器发送该组信息。
该组信息获取单元122具体用于，接收该组服务器发送的该组信息。
该发送单元123具体用于，将该组信息获取单元122接收到的组信息发送至该第一终端。
具体地，在该ProSe服务器根据该ProSe服务器中保存的签约信息验证通过后，若该ProSe服务器没有保存该组信息，则该ProSe服务器根据该第一请求消息向该通信组归属的组服务器发送第二请求，并在接收到该组服务器根据该第二请求向该ProSe服务器发送的该组信息后，将该组信息发送至该第一终端。
通过采用上述ProSe服务器，在第一终端与该第二终端不在相同的通信组时，第一终端可以向网络申请通信资源，从而与不同用户组的终端通信。
所属本领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的ProSe服务器的具体工作过程和描述，可以参考前述方法实施例中的对应过程，在此不再赘述。
本发明实施例提供一种终端130，如图13所示，所示终端130包括：
接收器131、发射器132、存储器133和处理器134(该设备中的处理器134的数量可以一个或多个，图13中以一个处理器为例)。在本发明的一些实施例中，接收器131、发射器132、存储器133和 处理器134可通过总线或者其它方式连接，其中，图13中以通过总线连接为例。
其中，存储器133用于存储程序代码，处理器134用于调用存储器133存储的程序代码执行如下步骤：
通过接收器131接收第二终端发送的第一消息，并在确定该第二终端选择该终端作为中继终端时，若该终端不是该通信组的成员，获取该通信组对应的组信息；其中，该第一消息用于请求中继服务，该第二终端是通信组的成员，该终端是具有中继功能的终端；处理器134根据该组信息，通过接收器131和发射器132与该第二终端通信。
可选地，该第一消息包括该通信组的标识信息；处理器134根据该通信组的标识信息确定该终端是否是该通信组的成员，并在确定该终端不是该通信组的成员时，通过接收器131获取该通信组对应的组信息。
进一步地，处理器134通过发射器132向服务该终端的接近业务ProSe服务器发送包含该通信组的标识信息的第一请求消息，以便该ProSe服务器根据该通信组的标识信息向该终端发送该通信组对应的组信息。
更进一步地，处理器134通过发射器132向服务该终端的ProSe服务器发送包含该通信组的标识信息的第一请求消息，以便该ProSe服务器根据该第一请求消息向该通信组的标识信息对应的通信组的组服务器发送第二请求消息，并在接收到该组服务器根据该第二请求消息向该ProSe服务器发送的该组信息后，将该组信息发送至该终端，其中，该第二请求消息用于请求获取该通信组对应的组信息。
可选地，处理器134通过接收器131接收该通信组对应的组服务器发送的该通信组对应的组信息。
进一步地，处理器134通过发射器132向该通信组归属的组服务器发送第三请求消息，以使该组服务器在确定该终端不是该通信组的成员时，向该终端发送该通信组对应的组信息。
可选地，在处理器134通过接收器131接收该通信组对应的组服 务器发送的该通信组对应的组信息前，处理器134在通过接收器131接收到该第二终端发送的第四请求消息后，通过发射器132据该第四请求消息向该通信组对应的组服务器发送第五请求消息，以使该组服务器在根据该第五请求消息确定该终端不是该通信组的成员时，向该终端发送该通信组对应的组信息；其中，该第五请求消息包含该终端的标识信息。
具体地，该组信息包括该通信组的通信资源信息。
可选地，该组信息还包括该通信组的MAC(Media Access Control，媒介访问控制层)地址、该通信组的IP(Internet Protocol，网络之间互连的协议)地址和安全密钥信息中的至少一项。
可选地，该通信组对应的组信息包括通信资源信息，处理器134通过接收器131获取该通信组对应的组信息前，处理器134还执行：通过发射器132向移动性管理实体MME发送第六请求消息，以便该MME根据该第六请求消息向基站发送第七请求消息，指示该基站为该终端分配该通信资源信息；通过接收器131接收该基站分配的通信资源信息；并通过发射器132向该第二终端发送该通信资源信息；处理器134根据该通信资源信息，通过接收器131和发射器132与该第二终端通信。
可选地，该组信息还包括验证信息；处理器134通过接收器131获取该通信组对应的组信息后，处理器134生成验证信息或根据该组信息得到该验证信息，并根据该验证信息验证该第二终端，在根据该验证信息对该第二终端验证通过后，通过接收器131和发射器132与该第二终端通信。
所属本领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的终端130的具体工作过程和描述，可以参考前述方法实施例中的对应过程，在此不再赘述。
本发明实施例提供一种ProSe(Proximity Services，接近业务)服务器140，如图14所示，该ProSe服务器包括：
接收器141、发射器142、存储器143和处理器144(该设备中 的处理器144的数量可以一个或多个，图14中以一个处理器为例)。在本发明的一些实施例中，接收器141、发射器142、存储器143和处理器144可通过总线或者其它方式连接，其中，图14中以通过总线连接为例。
其中，存储器143用于存储程序代码，处理器144用于调用存储器143存储的程序代码执行如下步骤：
在第一终端接收到第二终端发送的第一消息后，通过接收器141接收该第一终端发送的第一请求消息；根据该第一请求消息通过发射器142将该组信息发送至该第一终端，以便该第一终端根据该组信息与该第二终端通信；其中，该第一消息用于请求中继服务，该第二终端是通信组的成员，该第一消息包括该通信组的标识信息，该第一请求消息用于指示该ProSe服务器向该第一终端发送该通信组对应的组信息。
进一步地，处理器144通过发射器142根据该第一请求消息向该第二终端所在通信组归属的组服务器发送第二请求消息，以便该组服务器向该ProSe服务器发送该组信息；通过接收器141接收该组服务器发送的该组信息，并通过发射器142将该组信息发送至该第一终端。
具体地，该组信息包括该通信组的通信资源信息。
可选地，该组信息还包括该通信组的媒介访问控制层MAC地址、该通信组的网络间互联协议IP地址和安全密钥信息中的至少一项。
所属本领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的ProSe服务器140的具体工作过程和描述，可以参考前述方法实施例中的对应过程，在此不再赘述。
以上所述，仅为本发明的具体实施方式，但本发明的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本发明的保护范围之内。因此，本发明的保护范围应该以权利要求的保护范围为准。

Claims (30)

  1. 一种通信的方法，其特征在于，包括：
    第一终端接收第二终端发送的第一消息；其中，所述第一消息用于请求中继服务，所述第二终端是通信组的成员，所述第一终端是具有中继功能的终端；
    所述第一终端在确定所述第二终端选择所述第一终端作为中继终端时，若所述第一终端不是所述通信组的成员，所述第一终端获取所述通信组对应的组信息；
    所述第一终端根据所述组信息与所述第二终端通信。
  2. 根据权利要求1所述的方法，其特征在于，所述第一消息包括所述通信组的标识信息；
    在所述第一终端获取所述通信组对应的组信息前，所述方法还包括：
    所述第一终端根据所述通信组的标识信息确定所述第一终端是否是所述通信组的成员；
    所述第一终端获取所述通信组对应的组信息包括：
    在确定所述第一终端不是所述通信组的成员时，所述第一终端获取所述通信组对应的组信息。
  3. 根据权利要求2所述的方法，其特征在于，所述第一终端获取所述通信组对应的组信息包括：
    所述第一终端向服务所述第一终端的接近业务ProSe服务器发送包含所述通信组的标识信息的第一请求消息，以便所述ProSe服务器根据所述通信组的标识信息向所述第一终端发送所述通信组对应的组信息。
  4. 根据权利要求3所述的方法，其特征在于，所述第一终端向服务所述第一终端的接近业务ProSe服务器发送包含所述通信组的标识信息的第一请求消息，以便所述ProSe服务器根据所述通信组的标识信息向所述第一终端发送所述通信组对应的组信息包括：
    所述第一终端向服务所述第一终端的ProSe服务器发送包含所述通信组的标识信息的第一请求消息，以便所述ProSe服务器根据所述第一请求消息向所述通信组的标识信息对应的通信组的组服务器发送第二请求消息，并在接收到所述组服务器根据所述第二请求消息 向所述ProSe服务器发送的所述组信息后，将所述组信息发送至所述第一终端，其中，所述第二请求消息用于请求获取所述通信组对应的组信息。
  5. 根据权利要求1或2所述的方法，其特征在于，所述第一终端获取所述通信组对应的组信息包括：
    所述第一终端接收所述通信组对应的组服务器发送的所述通信组对应的组信息。
  6. 根据权力要求5所述的方法，其特征在于，在所述第一终端确定所述第二终端选择所述第一终端作为中继终端后，所述方法还包括：
    所述第一终端向所述通信组归属的组服务器发送第三请求消息，以使所述组服务器在确定所述第一终端不是所述通信组的成员时，向所述第一终端发送所述通信组对应的组信息。
  7. 根据权利要求5所述的方法，其特征在于，在所述第一终端接收所述通信组对应的组服务器发送的所述通信组对应的组信息前，所述方法还包括：
    所述第一终端在接收到所述第二终端发送的第四请求消息后，根据所述第四请求消息向所述通信组对应的组服务器发送第五请求消息，以使所述组服务器在根据所述第五请求消息确定所述第一终端不是所述通信组的成员时，向所述第一终端发送所述通信组对应的组信息；其中，所述第五请求消息包含所述第一终端的标识信息。
  8. 根据权利要求1至7任一项所述的方法，其特征在于，所述组信息包括所述通信组的通信资源信息。
  9. 根据权利要求8所述的方法，其特征在于，所述组信息还包括所述通信组的媒介访问控制层MAC地址、所述通信组的网络间互联协议IP地址和安全密钥信息中的至少一项。
  10. 根据权利要求1或2所述的方法，其特征在于，所述通信组对应的组信息包括通信资源信息；
    在所述获取所述通信组对应的组信息前，所述方法还包括：
    向移动性管理实体MME发送第六请求消息，以便所述MME根据所述第六请求消息向基站发送第七请求消息，指示所述基站为所述第一终端分配所述通信资源信息；
    所述第一终端获取所述通信组对应的组信息包括：
    所述第一终端接收所述基站分配的通信资源信息；
    在所述第一终端获取所述通信组对应的组信息后，所述方法还包括：
    所述第一终端向所述第二终端发送所述通信资源信息；
    所述第一终端根据所述组信息与所述第二终端通信包括：
    所述第一终端根据所述通信资源信息与所述第二终端通信。
  11. 根据权利要求1至10任一项所述的方法，其特征在于，所述组信息还包括验证信息；
    在所述第一终端获取所述通信组对应的组信息后，所述方法还包括：
    所述第一终端生成验证信息或根据所述组信息得到所述验证信息，并根据所述验证信息验证所述第二终端；
    所述第一终端根据所述组信息与所述第二终端通信包括：
    所述第一终端在根据所述验证信息对所述第二终端验证通过后，与所述第二终端通信。
  12. 一种通信的方法，其特征在于，包括：
    在第一终端接收到第二终端发送的第一消息后，接近业务ProSe服务器接收所述第一终端发送的第一请求消息；其中，所述第一消息用于请求中继服务，所述第二终端是通信组的成员，所述第一消息包括所述通信组的标识信息，所述第一请求消息用于指示所述ProSe服务器向该第一终端发送该通信组对应的组信息；
    根据所述第一请求消息将所述组信息发送至所述第一终端，以便所述第一终端根据所述组信息与所述第二终端通信。
  13. 根据权利要求12所述的方法，其特征在于，所述根据所述第一请求消息将所述组信息发送至所述第一终端包括：
    根据所述第一请求消息向所述第二终端所在通信组归属的组服务器发送第二请求消息，以便所述组服务器向所述ProSe服务器发送所述组信息；
    接收所述组服务器发送的所述组信息，并将所述组信息发送至所述第一终端。
  14. 根据权利要求12或13所述的方法，其特征在于，所述组信 息包括所述通信组的通信资源信息。
  15. 根据权利要求14所述的方法，其特征在于，所述组信息还包括所述通信组的媒介访问控制层MAC地址、所述通信组的网络间互联协议IP地址和安全密钥信息中的至少一项。
  16. 一种终端，其特征在于，包括：
    获取单元，用于接收第二终端发送的第一消息，并在确定所述第二终端选择所述第一终端作为中继终端时，若所述第一终端不是所述通信组的成员，获取所述通信组对应的组信息；其中，所述第一消息用于请求中继服务，所述第二终端是通信组的成员，所述第一终端是具有中继功能的终端；
    处理单元，用于根据所述获取单元得到的组信息与所述第二终端通信。
  17. 根据权利要求16所述的终端，其特征在于，所述第一消息包括所述通信组的标识信息；
    所述处理单元还用于，根据所述通信组的标识信息确定所述第一终端是否是所述通信组的成员；
    所述获取单元具体用于在所述处理单元确定所述第一终端不是所述通信组的成员时，获取所述通信组对应的组信息。
  18. 根据权利要求17所述的终端，其特征在于，所述终端还包括：
    第一发送单元，用于向服务所述第一终端的接近业务ProSe服务器发送包含所述通信组的标识信息的第一请求消息，以便所述ProSe服务器根据所述通信组的标识信息向所述第一终端发送所述通信组对应的组信息。
  19. 根据权利要求18所述的终端，其特征在于，所述第一发送单元还用于，向服务所述第一终端的ProSe服务器发送包含所述通信组的标识信息的第一请求消息，以便所述ProSe服务器根据所述第一请求消息向所述通信组的标识信息对应的通信组的组服务器发送第二请求消息，并在接收到所述组服务器根据所述第二请求消息向所述ProSe服务器发送的所述组信息后，将所述组信息发送至所述第一终端；
    其中，所述第二请求消息用于请求获取所述通信组对应的组信 息。
  20. 根据权利要求16或17所述的终端，其特征在于，所述获取单元用于获取所述通信组对应的组信息具体为，所述获取单元用于接收所述通信组对应的组服务器发送的所述通信组对应的组信息。
  21. 根据权利要求20所述的终端，其特征在于，所述终端还包括：
    第二发送单元，用于向所述通信组归属的组服务器发送第三请求消息，以使所述组服务器在确定所述第一终端不是所述通信组的成员时，向所述第一终端发送所述通信组对应的组信息。
  22. 根据权利要求20所述的终端，其特征在于，所述获取单元还用于接收所述第二终端发送的第四请求消息；
    所述终端还包括：第三发送单元，用于在所述获取单元接收到所述第二终端发送的第四请求消息后，根据所述第四请求消息向所述通信组对应的组服务器发送第五请求消息，以使所述组服务器在根据所述第五请求消息确定所述第一终端不是所述通信组的成员时，向所述第一终端发送所述通信组对应的组信息；
    其中，所述第五请求消息包含所述第一终端的标识信息。
  23. 根据权利要求16至22任一项所述的终端，其特征在于，所述组信息包括所述通信组的通信资源信息。
  24. 根据权利要求23所述的终端，其特征能在于，所述组信息还包括所述通信组的媒介访问控制层MAC地址、所述通信组的网络间互联协议IP地址和安全密钥信息中的至少一项。
  25. 根据权利要求16或17所述的终端，其特征在于，所述通信组对应的组信息包括通信资源信息；
    所述终端还包括：第四发送单元，用于向移动性管理实体MME发送第六请求消息，以便所述MME根据所述第六请求消息向基站发送第七请求消息，指示所述基站为所述终端分配所述通信资源信息；
    所述获取单元用于获取所述通信组对应的组信息具体为，所述获取单元用于接收所述基站分配的通信资源信息；
    所述第四发送单元还用于，向所述第二终端发送所述通信资源信息；
    所述处理单元用于根据所述获取单元得到的组信息与所述第二 终端通信具体为，所述处理单元用于根据所述通信资源信息与所述第二终端通信。
  26. 根据权利要求16至25任一项所述的终端，其特征在于，所述组信息还包括验证信息；
    所述处理单元还用于，在所述获取单元获取所述通信组对应的组信息后，生成验证信息或根据所述组信息得到所述验证信息，并根据所述验证信息验证所述第二终端，并在根据所述验证信息对所述第二终端验证通过后，与所述第二终端通信。
  27. 一种接近业务ProSe服务器，其特征在于，包括：
    接收单元，用于在第一终端接收到第二终端发送的第一消息后，接收所述第一终端发送的第一请求消息；其中，所述第一消息用于请求中继服务，所述第二终端是通信组的成员，所述第一消息包括所述通信组的标识信息，所述第一请求消息用于指示所述ProSe服务器向该第一终端发送该通信组对应的组信息；
    组信息获取单元，用于根据所述第一请求消息得到所述通信组对应的组信息；
    发送单元，用于根据所述第一请求消息将所述组信息获取单元得到的组信息发送至所述第一终端，以便所述第一终端根据所述组信息与所述第二终端通信。
  28. 根据权利要求27所述的ProSe服务器，其特征在于，所述发送单元具体用于，根据所述第一请求消息向所述第二终端归属的通信组归属的组服务器发送第二请求消息，以便所述组服务器向所述ProSe服务器发送所述组信息；
    所述组信息获取单元具体用于，接收所述组服务器发送的所述组信息；
    所述发送单元具体还用于，将所述组信息获取单元接收到的组信息发送至所述第一终端。
  29. 根据权利要求27或28所述的ProSe服务器，其特征在于，所述组信息包括所述通信组的通信资源信息。
  30. 根据权利要求29所述的ProSe服务器，其特征在于，所述组信息还包括所述通信组的媒介访问控制层MAC地址、所述通信组的网络间互联协议IP地址和安全密钥信息中的至少一项。
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