WO2015124104A1 - Procédé, dispositif et système d'établissement de chemin et dispositif de réseau principal - Google Patents

Procédé, dispositif et système d'établissement de chemin et dispositif de réseau principal Download PDF

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Publication number
WO2015124104A1
WO2015124104A1 PCT/CN2015/073129 CN2015073129W WO2015124104A1 WO 2015124104 A1 WO2015124104 A1 WO 2015124104A1 CN 2015073129 W CN2015073129 W CN 2015073129W WO 2015124104 A1 WO2015124104 A1 WO 2015124104A1
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Prior art keywords
base station
core network
network device
direct communication
path
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PCT/CN2015/073129
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English (en)
Chinese (zh)
Inventor
周燕飞
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电信科学技术研究院
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Publication of WO2015124104A1 publication Critical patent/WO2015124104A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/14—Direct-mode setup
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a path establishment method, device and system, and core network device.
  • UEs User Equipments
  • eNBs evolved NodeBs
  • the UE 1 transmits data to the serving eNB1, and the eNB1 transmits the data to the core network device of the UE1 service: the serving gateway ( Serving GW) and Packet Data Network Gateway (PGW).
  • the PGW will route the data to the serving PGW and the Serving GW of the UE2 according to the routing table of the UE.
  • the Serving GW of the UE2 transmits the data to the serving eNB2 of the UE2, and then transmits the data to the UE2 through the eNB2.
  • the example shown in FIG. 1 is a scenario when the Serving GW and the PGW of the UE1 and the UE2 are the same, and the process of routing the data to the PGW serving the UE2 by the PGW serving the UE1 is omitted.
  • the proximity communication technology is studying when the communication parties satisfy certain conditions (such as close proximity), direct communication between two UEs or direct communication only via the eNB, and the data transmission path thereof is as shown in FIG. 1a and FIG. 1b.
  • FIG. 1a and FIG. 1b are diagrams showing data transmission paths between UEs after implementing proximity communication.
  • UE1 and UE2 may not need to directly transmit data through the mobile network device, or forward data through the same eNB without going through the core network.
  • This transmission method can reduce the data transmission delay and save network resources, especially the network resources of the core network.
  • a UE that satisfies the neighboring communication condition can also perform direct communication through two eNBs. As shown in FIG. 3, the proximity communication data between UE1 and UE2 is transmitted through eNB1 and eNB2, respectively, without going through the core network. .
  • ProSe discovery is divided into two broad categories of methods: direct discovery and core network based discovery.
  • Direct discovery refers to a process in which a ProSe UE discovers a ProSe UE in its vicinity directly through signaling between UEs.
  • Core network based discovery refers to the process by which the network determines whether two ProSe UEs satisfy neighboring communication conditions.
  • a discovery process based on the core network is shown in Figure 4, including the steps:
  • UE A and UE B are respectively registered in respective ProSe Function entities, which are shown in the figure as proximity communication function A or proximity communication function B.
  • the ProSe functional entity is an entity that performs ProSe discovery, identity mapping, and the like in the core network.
  • UE A requests proximity information between the UE and the UE B, for example, when the distance between UE A and UE B is less than one. Receive a network notification when setting.
  • the network locates UE A and UE B, respectively. In this process, the network can learn the cell where the UE is currently camped, as well as the finer-grained location information.
  • ProSe functional entity A (shown as proximity communication function A in the figure) detects that UE A and UE B are in the proximity range, ProSe functional entity A issues a notification message to UE A.
  • the prior art does not teach how the communication path is established in the case where two UEs perform direct communication via two eNBs.
  • the embodiment of the present invention provides a path establishment method, device, and system, and a core network device, which is used to implement establishment of a communication path in a direct communication scenario between two UEs via two eNBs.
  • the core network device determines that the first base station where the first UE camps and the second base station where the second UE resides can establish a communication link;
  • the core network device initiates establishing a direct communication path between the first UE and the second UE via the first base station and the second base station.
  • the core network device determines that the first base station where the first UE camps and the second base station where the second UE resides can establish a communication link, including one of the following manners:
  • Manner 1 The core network device determines, according to the pre-configured information of the direct interface between the first base station and the second base station, that a communication link can be established between the first base station and the second base station;
  • Manner 2 The core network device acquires information about the second base station that is directly interfaced with the first base station, and determines the first base station, when establishing a non-user equipment UE-related connection with the first base station. And establishing, by the second base station, a communication link; or, when establishing a non-UE related connection with the second base station, acquiring, by the core network device, the first interface directly reported by the second base station and having the direct interface with the second base station Information of the base station, thereby determining that a communication link can be established between the first base station and the second base station;
  • Manner 3 The core network device sends, by using UE-related signaling, the first base station, whether the first base station and the second base station can establish an inquiry message of the communication link, where the second base station identifier is carried, and when the first base station receives the return, Receiving the message, the core network device determines that a communication link can be established between the first base station and the second base station; or, the core network device sends, between the second base station and the first base station, the second base station by using UE related signaling An inquiry message of the communication link may be established, where the first base station identifier is carried, and when receiving the accept message returned by the second base station, the core network device determines that a communication link can be established between the second base station and the first base station.
  • the core network device can determine that the first base station where the first UE camps and the second base station where the second UE resides can establish a communication link.
  • the core network device initiates establishing a direct communication path between the first UE and the second UE via the first base station and the second base station, including:
  • the core network device initiates establishment of a direct communication path between the first UE and the second UE via the first base station and the second base station, triggered by the direct communication request message of the UE.
  • the core network device can initiate establishment of a direct communication path via the two base stations, triggered by the UE's direct communication request message.
  • the core network device initiates establishing a direct communication path between the first UE and the second UE via the first base station and the second base station, including:
  • the core network device acquires an IP address and a tunnel port number used by the first base station for direct communication
  • the core network device sends a path setup request message to the second base station, where the IP address and the tunnel port number used by the first base station for direct communication are carried; and the core network device receives the path setup response message returned by the second base station, where the second base station includes IP address and tunnel port number for direct communication;
  • the core network device sends a path setup request message to the first base station, where the IP address and the tunnel port number used by the second base station for direct communication are carried, and the core network device receives the path setup response message returned by the first base station.
  • the core network device initiates establishment of a direct communication path via the two base stations based on the core network based on internal judgment.
  • the core network device acquires an IP address and a tunnel port number used by the first base station for direct communication, including:
  • the core network device sends a direct path tunnel information request message to the first base station, and receives an IP address and a tunnel port number used by the first base station for direct communication by the first base station; or the core network device sends an inquiry message to the first base station, And obtaining an IP address and a tunnel port number used by the first base station for direct communication from the accept message returned by the first base station.
  • the core network device initiates establishing a direct communication path between the first UE and the second UE via the first base station and the second base station, including:
  • the core network device sends a path establishment trigger command to the first base station, where the second base station identifier is used, and the second base station determines the identity information of the UE.
  • the first base station After receiving the path establishment triggering command sent by the core network device, the first base station sends a path establishment request message to the second base station, where the IP address and tunnel port number of the user plane used by the first base station for direct communication are carried, and the first base station controls a face identifier, and the identifier information used by the second base station to determine the UE;
  • the second base station is configured to establish a direct communication path with the second UE according to the identifier information of the UE in the path setup request message sent by the first base station, and the second base station performs the RRC reconfiguration process with the second UE to establish the second base station and the second base station.
  • the second base station returns a path setup response message to the first base station, where the IP address and the tunnel port number used by the second base station for direct communication, and the second base station control plane identifier are included;
  • the core network device receives a path setup trigger response message returned by the first base station.
  • the core network device can initiate establishment of a direct communication path via the two base stations based on the base station based on internal judgment.
  • An embodiment of the present invention provides a path establishment method, including:
  • the second base station that the second UE camps on receives the path setup request message sent by the core network device, where the IP address and the tunnel port number used by the first base station where the first UE resides for direct communication are carried;
  • the second base station performs an RRC reconfiguration process with the second UE, and establishes a radio bearer for direct communication between the second base station and the second UE;
  • the second base station returns a path setup response message to the core network device, where the IP address and tunnel port number used by the second base station for direct communication are included.
  • An embodiment of the present invention provides a path establishment method, including:
  • the first base station that the first UE camps on receives the path setup request message sent by the core network device, where the second UE is carried The IP address and tunnel port number of the second base station that is camped on for direct communication;
  • the first base station performs an RRC reconfiguration process with the first UE, and establishes a radio bearer for direct communication between the first base station and the first UE;
  • the first base station returns a path setup response message to the core network device.
  • the core network device initiates establishment of a direct communication path via two base stations based on the core network.
  • the method further comprises:
  • the information of the base station having a direct interface with itself is reported to the core network device.
  • the core network can determine that the base station where the communication UEs are located can establish a communication link.
  • the method further comprises:
  • the first base station When determining, by the second base station identifier, the first base station can establish a communication link between the first base station and the second base station, the first base station returns an accept message to the core network device.
  • the first base station may further carry an IP address and a tunnel port number used by the first base station for direct communication in the accept message.
  • the core network can determine that the base station where the communication UEs are located can establish a communication link.
  • An embodiment of the present invention provides a path establishment method, including:
  • the first base station that the first UE camps on receives the path establishment trigger command sent by the core network device, where the second base station identifier is carried, and the second base station determines the identifier information of the UE.
  • the first base station sends a path setup request message to the second base station where the second UE resides, where the first base station carries the IP address and tunnel port number of the direct communication user plane, the first base station control plane identifier, and the second base station Determining, by the base station, identification information of the UE;
  • the first base station performs RRC reconfiguration with the first UE, and the first base station returns a path establishment trigger response message to the core network device.
  • An embodiment of the present invention provides a path establishment method, including:
  • the second base station that the second UE camps on according to the path setup request message sent by the first base station where the first UE is camped, learns that a direct communication path is to be established for the second UE, and the second base station performs an RRC reconfiguration process with the second UE. Establishing a radio bearer for direct communication between the second base station and the second UE;
  • the second base station returns a path setup response message to the first base station, where the IP address and tunnel port number used by the second base station for direct communication, and the second base station control plane identifier are included.
  • the core network device is enabled to establish a direct communication path via the two base stations based on the base station.
  • the method further comprises:
  • the information of the base station having a direct interface with itself is reported to the core network device.
  • the core network can determine that the base station where the communication UEs are located can establish a communication link.
  • the method further comprises:
  • the first base station When determining, by the second base station identifier, the first base station can establish a communication link between the first base station and the second base station, the first base station returns an accept message to the core network device.
  • the core network can determine that the base station where the communication UEs are located can establish a communication link.
  • the embodiment of the invention provides a core network device, including:
  • a determining unit configured to determine that the first base station where the first UE camps and the second base station where the second UE resides can establish a communication link
  • an initiating unit configured to initiate establishing a direct communication path between the first UE and the second UE via the first base station and the second base station.
  • the determining unit determines that the first base station where the first UE camps and the second base station where the second UE resides can establish a communication link in one of the following manners:
  • Manner 1 determining, according to the pre-configured information of the direct interface between the first base station and the second base station, that a communication link can be established between the first base station and the second base station;
  • Manner 2 When establishing a non-user equipment UE-related connection with the first base station, acquiring information about the second base station that is directly interfaced with the first base station, and determining the first base station and the second The communication link may be established between the base stations; or, when the non-UE related connection with the second base station is established, the information of the first base station that is directly interfaced with the second base station reported by the second base station is obtained, thereby determining A communication link can be established between the first base station and the second base station;
  • Manner 3 The UE sends an inquiry message about whether a communication link can be established between the first base station and the second base station by using the UE-related signaling, where the second base station identifier is carried, and the receiving message returned by the first base station is received. Determining that a communication link can be established between the first base station and the second base station; or sending, by using UE-related signaling, an inquiry message of whether a communication link can be established between the second base station and the first base station to the second base station, The first base station identifier is carried, and when the accept message returned by the second base station is received, it is determined that a communication link can be established between the second base station and the first base station.
  • the core network device can determine that the first base station where the first UE camps and the second base station where the second UE resides can establish a communication link.
  • the initiating unit is specifically configured to:
  • the core network device can initiate establishment of a direct communication path via the two base stations, triggered by the UE's direct communication request message.
  • the initiating unit is specifically configured to:
  • the core network device initiates establishment of a direct communication path via the two base stations based on the core network based on internal judgment.
  • the initiating unit is specifically configured to:
  • the first base station After receiving the path establishment triggering command, the first base station sends a path establishment request message to the second base station, where the IP address and the tunnel port number of the user plane used by the first base station for direct communication are carried. a base station control plane identifier, and the identifier information used by the second base station to determine the UE;
  • the second base station is configured to establish a direct communication path for the second UE according to the identifier information of the UE in the path setup request message sent by the first base station, and the second base station performs wireless with the second UE.
  • a resource control RRC reconfiguration process establishing a radio bearer for direct communication between the second base station and the second UE;
  • the core network device can initiate establishment of a direct communication path via the two base stations based on the base station based on internal judgment.
  • the embodiment of the invention provides a path establishing device, including:
  • a first unit configured to receive a path setup request message sent by the core network device, where the IP address and the tunnel port number used by the first base station where the first UE resides for direct communication are carried;
  • a second unit configured to perform an RRC reconfiguration process with the second UE, and establish a radio bearer for direct communication between the device and the second UE;
  • a third unit configured to return a path establishment response message to the core network device, where the IP address and the tunnel port number used by the second base station for direct communication are included
  • the third unit is further configured to:
  • the information of the base station having a direct interface with itself is reported to the core network device.
  • the first unit is further configured to: receive, by the core network device, an inquiry message that the communication link can be established between the first base station and the second base station, where the second base station identifier is carried;
  • the third unit is further configured to: when determining, according to the second base station identifier, that a communication link can be established between the first base station and the second base station, returning an accept message to the core network device.
  • the embodiment of the invention provides a path establishing device, including:
  • a first unit configured to receive a path setup trigger command sent by the core network device, where the second base station identifier that the second UE camps on, and the identifier information used by the second base station to determine the UE;
  • a third unit configured to send a path setup request message to the second base station, where the IP address and the tunnel port number of the user plane used by the first base station for direct communication, the first base station control plane identifier, and the second base station determining Identification information of the UE;
  • a second unit configured to perform RRC reconfiguration with the first UE, and return a path establishment trigger response message to the core network device.
  • the third unit is further configured to:
  • the information of the base station having a direct interface with itself is reported to the core network device.
  • the first unit is further configured to: receive, by the core network device, an inquiry message that the communication link can be established between the first base station and the second base station, where the second base station identifier is carried;
  • the third unit is further configured to: when determining, according to the second base station identifier, that a communication link can be established between the first base station and the second base station, returning an accept message to the core network device.
  • the second unit is further configured to: according to the path establishment request message sent by the first base station where the first UE resides, learn to establish a direct communication path to the second UE, perform an RRC reconfiguration process with the second UE, and establish a radio bearer for direct communication between the second base station and the second UE;
  • the third unit is further configured to: return a path setup response message to the first base station, where the IP address and the tunnel port number used by the second base station for direct communication, and the second base station control plane identifier are included.
  • the embodiment of the invention provides a path establishing device, including:
  • a second unit configured to establish a direct communication path with the second UE according to the path establishment request message sent by the first base station where the first UE is camped, perform an RRC reconfiguration process with the second UE, and establish a second base station and the second a radio bearer for direct communication between two UEs;
  • a third unit configured to return a path setup response message to the first base station, where the IP address and tunnel port number used by the second base station for direct communication, and the second base station control plane identifier are included.
  • the third unit is further configured to:
  • the information of the base station having a direct interface with itself is reported to the core network device.
  • An embodiment of the present invention provides a path establishment system, including: a first base station where a first UE resides and a second base station where a second UE resides, where
  • the second base station is used to:
  • the first base station is used to:
  • a path setup response message is returned to the core network device.
  • the core network device initiates establishment of a direct communication path via two base stations based on the core network.
  • the first base station is further configured to:
  • the first base station and/or the second base station are further configured to: when establishing a non-UE related connection with the core network device, report information of the base station that has a direct interface with itself to the core network device.
  • the core network can determine that the base station where the communication UEs are located can establish a communication link.
  • the first base station is further configured to:
  • an accept message is returned to the core network device.
  • the accepting message carries the IP address and port number used by the first base station for direct communication.
  • the core network can determine that the base station where the communication UEs are located can establish a communication link.
  • An embodiment of the present invention provides a path establishment system, including: a first base station where a first UE resides and a second base station where a second UE resides, where
  • the first base station is used to:
  • the second base station is used to:
  • a path setup response message where the IP address and the tunnel port number used by the second base station for direct communication, and the second base station control plane identifier are included;
  • the first base station is further configured to: perform RRC reconfiguration with the first UE, and return a path establishment trigger response message to the core network device.
  • the core network device is enabled to establish a direct communication path via the two base stations based on the base station.
  • the first base station and/or the second base station are further configured to: when establishing a non-UE related connection with the core network device, report information of the base station that has a direct interface with itself to the core network device.
  • the core network can determine that the base station where the communication UEs are located can establish a communication link.
  • the first base station is further configured to:
  • an accept message is returned to the core network device.
  • the core network can determine that the base station where the communication UEs are located can establish a communication link.
  • An embodiment of the present invention provides a core network device, where the device includes: a processor and a memory;
  • the memory is configured to store one or more executable programs, which are used to configure the processor
  • the processor is configured with one or more executable programs, and the one or more executable programs are configured to perform a method for determining a first base station and a second UE station where the first user equipment UE camps The remaining second base station may establish a communication link; and be used to initiate establishment of a direct communication path between the first UE and the second UE via the first base station and the second base station.
  • An embodiment of the present invention provides a base station, including: a processor, a memory, and a transceiver;
  • the memory is configured to store one or more executable programs, which are used to configure the processor
  • the transceiver is configured to receive and send data under the control of the processor
  • the processor is configured with one or more executable programs, and the one or more executable programs are configured to: receive a path establishment trigger command sent by a core network device, where the second user equipment is carried a second base station identifier that is reserved by the UE, and identifier information for determining, by the second base station, a path setup request message for carrying the IP address of the user plane used by the first base station for direct communication And a tunnel port number, a first base station control plane identifier, and identifier information used by the second base station to determine the UE; configured to perform radio resource control RRC reconfiguration with the first UE, and return to the core network device Path establishment trigger response message;
  • An embodiment of the present invention provides a path establishment system, including: a core network device and a base station, where
  • the core network device is used to:
  • Determining that the first base station where the first user equipment UE camps and the second base station where the second UE camps may establish a communication link; and initiating establishing between the first UE and the second UE via the a direct communication path between a base station and the second base station;
  • the base station is used to:
  • radio resource control RRC reconfiguration procedure with the second UE, establishing a radio bearer for direct communication between the device and the second UE; or performing radio resource control RRC with the first UE a matching procedure, establishing a radio bearer for direct communication between the first base station and the first UE;
  • An embodiment of the present invention provides a path establishment system, where the system includes: a core network device and a base station, where
  • the core network device is used to:
  • Determining that the first base station where the first user equipment UE camps and the second base station where the second UE camps may establish a communication link; and initiating establishing between the first UE and the second UE via the a direct communication path between a base station and the second base station;
  • the base station is used to:
  • a message where the IP address and the tunnel port number of the user plane used by the first base station for direct communication, the first base station control plane identifier, and the identifier information used by the second base station to determine the UE are used;
  • the UE performs radio resource control RRC reconfiguration, and returns a path establishment trigger response message to the core network device;
  • FIG. 1 is a schematic diagram of a data channel of communication between devices in the prior art
  • FIGS. 2a and 2b are schematic diagrams of a proximity communication path in the prior art
  • FIG. 3 is a schematic diagram of direct communication via two eNBs in the prior art
  • FIG. 4 is a schematic diagram of a discovery process based on a core network in the prior art
  • FIG. 5 is a schematic flowchart diagram of a path establishment method according to Embodiment 1 of the present invention.
  • FIG. 6 is a schematic flowchart diagram of a path establishment method according to Embodiment 2 of the present invention.
  • FIG. 7 is a schematic flowchart diagram of a path establishment method according to Embodiment 3 of the present invention.
  • FIG. 8 is a schematic flowchart diagram of a path establishment method according to Embodiment 4 of the present invention.
  • FIG. 9 is a schematic flowchart diagram of a path establishment method according to Embodiment 5 of the present invention.
  • FIG. 10 is a schematic flowchart of a method for a core network device of UE1 to learn a core network device to which UE2 belongs when UE1 and UE2 belong to a core network device according to Embodiment 6 of the present invention
  • FIG. 11 is a schematic flowchart diagram of a path establishing method on a core network side according to an embodiment of the present invention.
  • FIG. 12 is a schematic flowchart of a method for establishing a path on an access network side according to an embodiment of the present disclosure
  • FIG. 13 is a schematic flowchart of another path establishment method on the access network side according to an embodiment of the present disclosure.
  • FIG. 14 is a schematic structural diagram of a core network device according to an embodiment of the present disclosure.
  • FIG. 15 is a schematic structural diagram of another core network device according to an embodiment of the present disclosure.
  • FIG. 16 is a schematic structural diagram of a path establishing device according to an embodiment of the present disclosure.
  • FIG. 17 is a schematic structural diagram of a core network device according to an embodiment of the present disclosure.
  • FIG. 18 is a schematic structural diagram of a base station according to an embodiment of the present disclosure.
  • FIG. 19 is a schematic structural diagram of a base station according to an embodiment of the present disclosure.
  • FIG. 20 is a schematic structural diagram of a path establishment system according to an embodiment of the present invention.
  • FIG. 21 is a schematic structural diagram of a path establishment system according to an embodiment of the present invention.
  • the embodiment of the present invention provides a path establishment method, device, and system, and a core network device, which is used to implement establishment of a communication path in a direct communication scenario between two UEs via two eNBs.
  • Embodiments of the present invention provide a solution for establishing a direct communication path of a neighboring communication service via two eNBs.
  • the UE performing the proximity communication includes a communication initiator UE and a communication terminator UE, which are hereinafter referred to as a first UE and a second UE, respectively. If there is no special indication, "UE" indicates the first UE.
  • the base stations in which the first UE and the second UE respectively reside are referred to as the first base station and the second base station, respectively. In the embodiment of the present invention, only the scenarios in which the first base station and the second base station are different are focused.
  • the first step the core network device determines that the base station where the communication UEs are located can establish a communication link.
  • Second step The core network device initiates establishing a direct communication path via the two base stations.
  • the first step specifically has three implementation manners:
  • Manner 1 The core network device is configured with information about whether there is a direct interface between the two subordinate base stations. This configuration is done by the operator based on the network topology.
  • Manner 2 When the base station establishes a non-UE related connection with the core network device, the base station reports information of other base stations that have direct interfaces with itself to the core network device. Based on this information, the core network device maintains a database of direct interfaces between the base stations.
  • the core network device may be a mobility management entity.
  • Manner 3 The core network device directly sends an inquiry message to the first base station by using UE-related signaling, where the second base station identifier is carried.
  • the second base station identifier may be obtained by the core network in the proximity communication discovery process, and the specific method is not within the scope of the present invention. This method three includes two steps:
  • Step 1 The core network device directly sends an inquiry message to the first base station, where the second base station identifier is carried.
  • the identifier of the second base station may be an eNB ID or an Evolved Universal Terrestrial Radio Access Network (E-UTRAN) E-UTRAN Cell Global Identity (ECGI).
  • E-UTRAN Evolved Universal Terrestrial Radio Access Network
  • ECGI Evolved Universal Terrestrial Radio Access Network
  • Step 2 The first base station determines, according to the second base station identifier, whether a communication link can be established between itself and the second base station, and if yes, returns an accept message to the core network, otherwise returns a reject message.
  • the core network device may initiate establishment of a direct communication path via two base stations, triggered by a direct communication request message of the UE; or The core network device may also initiate establishment of a direct communication path via two base stations based on internal judgments, for example, by indicating that the first UE and the second UE satisfy the proximity communication condition by the proximity discovery result, and initiate establishment of a direct communication path via the two base stations.
  • the core network device when triggered by the direct communication request message of the UE, initiates the establishment of the direct communication path via the two base stations, and the direct communication request message sent by the UE to the core network device includes the first UE identifier and the second UE identifier.
  • the first UE identifier may be an International Mobile Subscriber Identity (IMSI) or a neighboring communication identifier, such as a ProSe UE ID or a ProSe Application ID.
  • the second UE identity may be a proximity communication identity, such as a ProSe UE ID or a ProSe Application ID.
  • the core network device initiates the establishment of a direct communication path via two base stations based on internal judgment, the two methods are specifically included:
  • Method 1 Based on the core network device, specifically including the steps:
  • the core network device acquires an IP address and a tunnel port number used by the first base station for direct communication.
  • the core network device may send a direct path tunnel information request message to the first base station, and the first base station returns an IP address and a tunnel port number for direct communication after receiving the first base station; or the core network may obtain the first base station by using an inquiry message. IP address and tunnel port number for direct communication. After the first base station receives the inquiry message, if the communication link can be established between the first base station and the second base station, the IP address and the tunnel port number for direct communication are carried in the accept message.
  • the core network device sends a path establishment request message to the second base station, where the IP address and the tunnel port number used by the first base station for direct communication are carried.
  • the second base station performs an RRC (Radio Resource Control) reconfiguration process with the second UE, and establishes a radio bearer for direct communication between the second base station and the second UE.
  • the second base station returns a path setup response message to the core network device, where the IP address and tunnel port number used by the second base station for direct communication are included.
  • RRC Radio Resource Control
  • the second base station, where the core network device learns that the second UE camps includes:
  • the core network device obtains the identifier information of the second UE from the request message of the first UE, and obtains the permanent identifier of the second UE according to the identifier information, for example, an International Mobile Subscriber Identifier (IMSI), where The prior art can be used to map how the identity information of the second UE and the permanent identity of the second UE are mapped, and how the core network device obtains the permanent identity of the second UE.
  • IMSI International Mobile Subscriber Identifier
  • the core network device finds the context information of the UE according to the permanent identifier of the second UE, and can determine the state of the UE according to the context information of the UE.
  • the core network device initiates paging, so that an identifier of the base station (ie, the second base station) currently camped by the second UE can be obtained;
  • the identifier of the second UE is included in the context information of the second UE stored by the core network device.
  • the core network device sends a path establishment request message to the first base station, where the IP address and the tunnel port number used by the second base station for direct communication are carried.
  • the first base station performs an RRC reconfiguration process with the first UE, and establishes a radio bearer for direct communication between the first base station and the first UE.
  • the first base station returns a path setup response message to the core network device, including the IP address and port number used by the first base station for direct communication.
  • the first base station and the second base station interact with the core network device to establish parameters required for establishing a direct communication path, and respectively establish a radio bearer for direct communication between the first UE and the second UE and the base station,
  • the direct communication path is established.
  • the core network device to which the first UE and the second UE belong are different, when the direct communication path via the two base stations is initiated based on the core network device:
  • the core network device can learn the core network device to which the second UE belongs according to the identifier of the second UE included in the core network device.
  • the path establishment related message between the first base station and the second base station needs to be transited by the core network device to which the first UE and the second UE belong.
  • Method 2 Based on the base station, specifically including the steps:
  • the core network device determines that the first base station can establish a communication link with the second base station, and sends a path establishment trigger command to the first base station, where the second base station identifier is carried, and the second base station determines the identifier information of the second UE. .
  • the first base station After receiving the path establishment triggering command, the first base station sends a path establishment request message to the second base station, where the first base station carries the IP address and tunnel port number of the direct communication user plane, the control identifier of the first base station, and The identification information received by the first base station for determining the UE in the first step.
  • the second base station learns to establish a direct communication path to the second UE according to the identifier information in the path establishment request message sent by the first base station.
  • the second base station performs an RRC reconfiguration process with the second UE, and establishes a radio bearer for direct communication between the second base station and the second UE.
  • the second base station returns a path setup response message to the first base station, where the second base station includes an IP address and a tunnel port number for direct communication, and a second base station control plane identifier.
  • the first base station performs RRC reconfiguration with the first UE.
  • the first base station returns a path establishment trigger response message to the core network device.
  • the first base station and the second base station directly interact with each other to establish parameters required for the direct communication path, and establish direct communication with the first UE and the second UE and the base station respectively.
  • the wireless bearer is established and the direct communication path is established.
  • the core network device in the embodiment of the present invention includes an MME (Mobility Management Entity) and/or a ProSe functional entity.
  • MME Mobility Management Entity
  • ProSe ProSe functional entity
  • Embodiment 1 is a diagrammatic representation of Embodiment 1:
  • the path establishment process includes the steps:
  • the MME pre-configures whether there is direct interface information between the two subordinate base stations, and the MME does not need to interact with the eNB.
  • eNB1 initiates an S1 establishment to the MME, and carries an identifier of one or more eNBs having an X2 interface in the S1 setup request message.
  • the MME returns an S1 setup response to the eNB1.
  • eNB2 uses the same process to establish an S1 connection with the MME.
  • the MME can know the eNB identity that has a direct interface with any of the subordinate eNBs. It should be noted that there is no order between steps 502, 503 and steps 504, 505. And, steps 501 and 502+503/504+505 are optional.
  • Embodiment 2 is a diagrammatic representation of Embodiment 1:
  • UE1 and UE2 adopt a network-based proximity discovery mechanism, UE1 and UE2 respectively camp on eNB1 and eNB2, and eNB1 and eNB2 are connected to the same MME.
  • the specific path establishment process includes the steps:
  • the UE and the network perform a network-based proximity discovery process, in which the MME obtains the identifiers eNB1 and eNB2 of the UE1 and UE2 currently camping on the base station.
  • UE1 sends a proximity communication setup request to the MME, where the UE1 and UE2 identifiers are carried.
  • the MME can know the base station identifier corresponding to the base station currently camped by the UE2.
  • the MME sends an inquiry message to eNB1 carrying the eNB2 identity.
  • the eNB2 has an X2 interface with itself, and returns a response message to the MME, where the GPRS Tunneling Protocol (GTP) tunnel port number, that is, the tunnel end identifier in FIG. (Tunneling Endpoint ID, TEID), and the IP address that eNB1 uses for direct communication.
  • GTP GPRS Tunneling Protocol
  • the MME sends an E-UTRAN Radio Access Bearer (E-RAB) setup request message to the eNB2, where the eNB1 IP address and TEID received in step 604 are carried.
  • E-RAB E-UTRAN Radio Access Bearer
  • eNB2 initiates an RRC reconfiguration procedure to establish a radio bearer for proximity communication with UE2.
  • eNB2 returns an E-RAB setup response to the MME, where the eNB2 carries the TEID assigned to the direct path and the IP address that eNB2 uses for direct communication.
  • the MME sends an E-RAB setup request message to the eNB1, where the eNB2 IP address and the TEID received in step 607, and a Non-Access Stratum (NAS) Packet Data Unit (PDU) are used.
  • the PDU is a proximity communication setup response message sent by the MME to the UE.
  • NAS Non-Access Stratum
  • eNB1 initiates an RRC reconfiguration procedure to establish a radio bearer for communication with UE1 for proximity communication. eNB1 sends the NAS PDU to UE1 during the RRC reconfiguration process.
  • eNB1 returns an E-RAB setup response to the MME, which carries the IP address and TEID of eNB1. So far, the establishment of the direct communication path between UE1, eNB1, eNB2, and UE2 is completed.
  • Embodiment 3 is a diagrammatic representation of Embodiment 3
  • the path establishment process includes the steps:
  • the MME obtains information on whether eNB1 and eNB2 can establish a direct communication link.
  • the UE and the network perform a network-based proximity discovery process, in which the MME obtains the identifiers eNB1 and eNB2 of the base station where UE1 and UE2 are currently camped.
  • UE1 sends a proximity communication setup request to the MME, where the UE1 and UE2 identifiers are carried.
  • the MME sends a direct path tunnel information request to the eNB1 to obtain an IP address and a GTP port number used by the eNB1 for direct path establishment.
  • eNB1 returns a direct path tunnel information response to the MME containing the IP address and TEID for the proximity communication.
  • the MME sends an E-UTRAN Radio Access Bearer (E-RAB) setup request message to the eNB2, which carries the eNB1 IP address and the TEID.
  • E-RAB E-UTRAN Radio Access Bearer
  • the eNB2 initiates an RRC reconfiguration procedure to establish a radio bearer for the proximity communication with the UE2.
  • the eNB2 returns an E-RAB setup response to the MME, which carries the TEID assigned by the eNB2 for the direct path and the IP address that the eNB2 uses for direct communication.
  • the MME sends an E-RAB setup request message to the eNB1, which carries the eNB2 IP address and the TEID, and a Non-Access Stratum (NAS) Packet Data Unit (PDU), which is sent by the MME to the UE.
  • the proximity communication establishes a response message.
  • NAS Non-Access Stratum
  • the eNB1 initiates an RRC reconfiguration procedure to establish a radio bearer for the proximity communication with the UE1.
  • eNB1 sends the NAS PDU to UE1 during the RRC reconfiguration process.
  • the eNB1 returns an E-RAB setup response to the MME, which carries the IP address and TEID of the eNB1. So far, the establishment of the direct communication path between UE1, eNB1, eNB2, and UE2 is completed.
  • Embodiment 4 is a diagrammatic representation of Embodiment 4:
  • the path establishment process includes the steps:
  • the MME obtains information on whether eNB1 and eNB2 can establish a direct communication link.
  • the 802. UE and the network perform a network-based proximity discovery process, in which the MME obtains the identifiers eNB1 and eNB2 of the UE1 and UE2 currently camping on the base station.
  • the MME determines that UE1 and UE2 can establish communication via eNB1 and eNB2, and then initiates a path establishment trigger command to eNB1, where the identifier of eNB2 is carried, and a transparent container Container, which carries eNB2 in the Container.
  • the identifier of the eNB2 UE S1AP ID on the S1 interface the MME can obtain and save the identifier by using the existing technology, where the identifier carries the identifier eNB2UE S1AP ID of the eNB2 on the S1 interface, that is, the second UE determines the second UE. Identification information.
  • the eNB1 sends a path establishment request to the eNB2 according to the eNB2 identifier received in the previous step, where the eNB1 carries the IP address and the TEID for the proximity communication, and the eNB1 is the eNB1X2 path (Path) assigned to the direct path between the eNB2 and the eNB2. ID.
  • eNB1 includes the Container in the message and sends it to eNB2.
  • the eNB2 After receiving the path establishment request message, the eNB2 resolves the Container, and according to the eNB2 UE S1AP ID, it needs to establish a direct path for the UE2. eNB2 performs RRC reconfiguration with UE2.
  • eNB2 allocates an eNB2X2Path ID for direct path identification.
  • the eNB2 returns a Path Setup Response message to the eNB1, including the IP address and TEID used by the eNB2 for the proximity communication, and the direct path identifier eNB2X2Path ID.
  • eNB1 performs RRC reconfiguration with UE1.
  • eNB1 returns a path setup trigger response message to the MME.
  • Embodiment 5 is a diagrammatic representation of Embodiment 5:
  • the path establishment process includes the following steps:
  • the MME learns the direct interface information of the base station according to the configuration or non-UE related signaling.
  • UE1 and UE2 perform a proximity discovery process.
  • UE1 sends a proximity communication setup request message to MME1, where the identifiers of UE1 and UE2 are carried.
  • the MME1 learns the MME2 to which it belongs according to the identifier of the UE2. For the specific procedure, see Embodiment 6 below.
  • MME1 sends a path request message to eNB1.
  • eNB1 returns a path response to MME1, which contains IP address and port number information used by eNB1 for direct communication.
  • MME1 sends a direct path tunnel setup request to MME2, which includes IP address and port number information used by eNB1 for direct communication.
  • the MME2 sends a direct path tunnel establishment request to the eNB2, which includes the IP address and port number information used by the eNB1 for direct communication.
  • eNB2 performs RRC reconfiguration with UE2 to establish an air interface bearer related to direct communication.
  • eNB2 returns a direct path tunnel setup response to MME2, which contains IP address and port number information used by eNB2 for direct communication.
  • MME2 returns a direct path tunnel setup response to MME1, which includes IP address and port number information used by eNB2 for direct communication.
  • MME1 sends a direct path tunnel establishment request to eNB1, which contains IP address and port number information used by eNB2 for direct communication.
  • eNB1 performs RRC reconfiguration with UE1 to establish an air interface bearer related to direct communication.
  • eNB1 returns a direct path tunnel setup response to MME1.
  • FIG. 10 When the core network device to which the UE1 and the UE2 belong are different, the method for the core network device of the UE1 to learn the core network device to which the UE2 belongs is shown in FIG. 10, and includes:
  • UE1 sends a proximity communication request message to MME1, which includes the identifiers of UE1 and UE2.
  • the identity of UE2 is the ProSe ID (proximity communication identity) of UE2.
  • the MME1 sends an identifier request to the ProSe Function in the network, where the ProSe ID of the UE2 is carried.
  • ProSe Function The identity identifier of UE2 is known from the identity mapping.
  • the ProSe Function queries the HSS for the MME currently registered by the UE2 through the permanent identifier of the UE2, and obtains the identifier of the MME2.
  • the ProSe Function returns an identity response message to the MME1, where the MME2 identifier is carried.
  • a path establishment method provided by an embodiment of the present invention includes the following steps:
  • the core network device determines that the first base station where the first UE resides and the second base station where the second UE resides may establish a communication link.
  • the core network device initiates establishing a direct communication path between the first UE and the second UE via the first base station and the second base station.
  • a path establishment method provided by an embodiment of the present invention includes the following steps:
  • the second base station receives a path setup request message sent by the core network device, where the IP address and the tunnel port number used by the first base station where the first UE resides for direct communication are carried.
  • the second base station performs an RRC reconfiguration process with the second UE, and establishes a radio bearer for direct communication between the second base station and the second UE.
  • the second base station returns a path setup response message to the core network device, where the IP address and the tunnel port number used by the second base station for direct communication are included.
  • the first base station receives a path setup request message sent by the core network device, where the IP address and the tunnel port number used by the second base station for direct communication are carried.
  • the first base station performs an RRC reconfiguration process with the first UE, and establishes a radio bearer for direct communication between the first base station and the first UE.
  • the first base station returns a path setup response message to the core network device, where the IP address and port number used by the first base station itself for direct communication are included.
  • another path establishment method provided by the embodiment of the present invention includes the following steps:
  • the first base station that is camped by the first UE receives a path setup trigger command sent by the core network device, where the second base station identifier is carried, and the second base station determines the identifier information of the UE.
  • the first base station sends a path setup request message to the second base station where the second UE resides, where the first base station carries the IP address and tunnel port number of the direct communication user plane, the first base station control plane identifier, and is used for The second base station determines identification information of the UE;
  • the second base station is configured to establish a direct communication path with the second UE according to the path setup request message sent by the first base station, and the second base station performs an RRC reconfiguration process with the second UE to establish a relationship between the second base station and the second UE.
  • the second base station returns a path setup response message to the first base station, where the IP address and the tunnel port number used by the second base station for direct communication, and the second base station control plane identifier are included.
  • the first base station performs RRC reconfiguration with the first UE, and the first base station returns a path establishment trigger response message to the core network device.
  • a core network device includes:
  • the determining unit 11 is configured to determine that the first base station where the first UE camps and the second base station where the second UE resides can establish a communication link;
  • the initiating unit 12 is configured to initiate establishing a direct communication path between the first UE and the second UE via the first base station and the second base station.
  • the determining unit 11 determines that the first base station where the first UE camps and the second base station where the second UE resides can establish a communication link in one of the following manners:
  • Manner 1 determining, according to the pre-configured information of the direct interface between the first base station and the second base station, that a communication link can be established between the first base station and the second base station;
  • Manner 2 When the non-user equipment UE related connection between the first base station and the first base station is established, the first base station reports the Information about the second base station having direct interface with the first base station, thereby determining that a communication link can be established between the first base station and the second base station; or acquiring when establishing a non-UE related connection with the second base station Determining, by the second base station, information of the first base station that has a direct interface with the second base station, so as to determine that a communication link can be established between the first base station and the second base station;
  • Manner 3 The UE sends an inquiry message about whether a communication link can be established between the first base station and the second base station by using the UE-related signaling, where the second base station identifier is carried, and the receiving message returned by the first base station is received. Determining that a communication link can be established between the first base station and the second base station; or sending, by using UE-related signaling, an inquiry message of whether a communication link can be established between the second base station and the first base station to the second base station, The first base station identifier is carried, and when the accept message returned by the second base station is received, it is determined that a communication link can be established between the second base station and the first base station.
  • the initiating unit 12 is specifically configured to:
  • the core network device can initiate establishment of a direct communication path via the two base stations, triggered by the UE's direct communication request message.
  • the initiating unit 12 is specifically configured to:
  • the first base station sends a path to the second base station Establishing a request message, where the IP address and tunnel port number of the user plane used by the first base station for direct communication, the first base station control plane identifier, and the identifier information used by the second base station to determine the UE are carried;
  • the second base station is configured to establish a direct communication path for the second UE according to the identifier information of the UE in the path setup request message sent by the first base station, and the second base station performs radio resources with the second UE. And controlling a RRC reconfiguration process, establishing a radio bearer for direct communication between the second base station and the second UE, and receiving a path setup response message returned by the first base station.
  • the core network device initiates establishment of a direct communication path via the two base stations based on the core network based on internal judgment.
  • the initiating unit sends a direct path tunnel information request message to the first base station, and receives an IP address and a tunnel port number used by the first base station for direct communication returned by the first base station; or, the initiating unit goes to the first A base station transmits an inquiry message and obtains an IP address and a tunnel port number used by the first base station for direct communication from the acceptance message returned by the first base station.
  • the initiating unit 12 is specifically configured to:
  • the core network device can initiate establishment of a direct communication path via the two base stations based on the base station based on internal judgment.
  • another core network device provided by an embodiment of the present invention includes: a memory 230 and a processor 240.
  • the processor 240 is configured with a computer program or the like for performing the method on the core network device side to implement the function of the core network device side described in the embodiment of the present invention; the memory 230 is configured to store the computer program.
  • the code may be used to configure the processor 240; the processor 240 may include a baseband processing component and a radio frequency according to actual needs. Equipment such as components can realize data transmission and reception. A detailed description of the functions of the memory 230 and the processor 240 is given below.
  • the processor 240 is configured to determine that the first base station where the first UE camps and the second base station where the second UE resides can establish a communication link;
  • the processor 240 is configured to initiate establishing a direct communication path between the first UE and the second UE via the first base station and the second base station.
  • the processor 240 determines that the first base station where the first UE camps and the second base station where the second UE resides can establish a communication link in one of the following manners:
  • Manner 1 determining, according to the pre-configured information of the direct interface between the first base station and the second base station, that a communication link can be established between the first base station and the second base station;
  • Manner 2 When establishing a non-user equipment UE-related connection with the first base station, acquiring information about the second base station that is directly interfaced with the first base station, and determining the first base station and the second The communication link may be established between the base stations; or, when the non-UE related connection with the second base station is established, the information of the first base station that is directly interfaced with the second base station reported by the second base station is obtained, thereby determining A communication link can be established between the first base station and the second base station;
  • Manner 3 The UE sends an inquiry message about whether a communication link can be established between the first base station and the second base station by using the UE-related signaling, where the second base station identifier is carried, and the receiving message returned by the first base station is received. Determining that a communication link can be established between the first base station and the second base station; or sending, by using UE-related signaling, an inquiry message of whether a communication link can be established between the second base station and the first base station to the second base station, The first base station identifier is carried, and when the accept message returned by the second base station is received, it is determined that a communication link can be established between the second base station and the first base station.
  • the processor 240 is specifically configured to:
  • the core network device can initiate establishment of a direct communication path via the two base stations, triggered by the UE's direct communication request message.
  • the processor 240 is specifically configured to:
  • the core network device initiates establishment of a direct communication path via the two base stations based on the core network based on internal judgment.
  • the initiating unit sends a direct path tunnel information request message to the first base station, and receives an IP address and a tunnel port number used by the first base station for direct communication returned by the first base station; or, the initiating unit goes to the first A base station transmits an inquiry message and obtains an IP address and a tunnel port number used by the first base station for direct communication from the acceptance message returned by the first base station.
  • the processor 240 is specifically configured to:
  • the core network device can initiate establishment of a direct communication path via the two base stations based on the base station based on internal judgment.
  • the path establishment system includes: a first base station where the first UE resides and a second base station where the second UE resides, where
  • the second base station is used to:
  • the first base station is used to:
  • a path setup response message is returned to the core network device, including the IP address and port number used by the first base station itself for direct communication.
  • the core network device initiates establishment of a direct communication path via two base stations based on the core network.
  • the first base station is further configured to:
  • the first base station and/or the second base station are further configured to: when establishing a non-UE related connection with the core network device, report information of the base station that has a direct interface with itself to the core network device.
  • the core network can determine that the base station where the communication UEs are located can establish a communication link.
  • the first base station is further configured to:
  • an accept message is returned to the core network device.
  • the accept message further includes an IP address and a tunnel port number used by the first base station for direct communication.
  • the core network can determine that the base station where the communication UEs are located can establish a communication link.
  • a path establishment system that is adopted by the embodiment of the present invention includes: a first base station where the first UE resides and a second base station where the second UE resides, where
  • the first base station is used to:
  • the second base station is used to:
  • a path setup response message where the IP address and the tunnel port number used by the second base station for direct communication, and the second base station control plane identifier are included;
  • the first base station is further configured to: perform RRC reconfiguration with the first UE, and return a path establishment trigger response message to the core network device.
  • the core network device is enabled to establish a direct communication path via the two base stations based on the base station.
  • the first base station is further configured to: receive a direct path tunnel information request message sent by the core network device, and return an IP address and a tunnel port number used by the first base station for direct communication to the core network device; or receive the core network.
  • the inquiry message sent by the device returns an accept message carrying the IP address and tunnel port number used by the first base station for direct communication.
  • the first base station is further configured to: when determining, according to the second base station identifier, that a communication link can be established between the first base station and the second base station, returning an accept message to the core network device.
  • the accept message further includes an IP address and a tunnel port number used by the first base station for direct communication.
  • the first base station and/or the second base station are further configured to: when establishing a non-UE related connection with the core network device, report information of the base station that has a direct interface with itself to the core network device.
  • the core network can determine that the base station where the communication UEs are located can establish a communication link.
  • the first base station is further configured to:
  • an accept message is returned to the core network device.
  • a path establishing device which may be a base station, is provided in the embodiment of the present invention, and includes:
  • the first unit 161 is configured to receive a path setup request message sent by the core network device, where the IP address and the tunnel port number used by the first base station where the first UE resides for direct communication are carried;
  • the second unit 162 is configured to perform an RRC reconfiguration process with the second UE, and establish a radio bearer for direct communication between the device and the second UE.
  • the third unit 163 is configured to return a path establishment response message to the core network device, where the IP address and the tunnel port number used by the second base station for direct communication are included.
  • the third unit 163 is further configured to:
  • the information of the base station having a direct interface with itself is reported to the core network device.
  • the first unit 161 is further configured to: receive an inquiry message of whether a communication link can be established between the first base station and the second base station, where the core network device carries the second base station identifier;
  • the third unit 163 is further configured to: when determining, according to the second base station identifier, that a communication link can be established between the first base station and the second base station, returning an accept message to the core network device.
  • Another path establishing device provided by the embodiment of the present invention may be, for example, a base station, and has the structure shown in FIG.
  • the first unit 161 is configured to receive a path setup trigger command sent by the core network device, where the second base station identifier that the second UE camps on, and the second base station determine the identifier information of the UE.
  • the third unit 163 is configured to send a path setup request message to the second base station, where the IP address and the tunnel port number of the user plane used by the first base station for direct communication, the first base station control plane identifier, and the second base station are used. Determining identification information of the UE;
  • the second unit 162 is configured to perform RRC reconfiguration with the first UE, and return a path establishment trigger response message to the core network device.
  • the third unit 163 is further configured to:
  • the information of the base station having a direct interface with itself is reported to the core network device.
  • the first unit 161 is further configured to: receive an inquiry message of whether a communication link can be established between the first base station and the second base station, where the core network device carries the second base station identifier;
  • the third unit 163 is further configured to: when determining, according to the second base station identifier, that a communication link can be established between the first base station and the second base station, returning an accept message to the core network device.
  • the second unit 162 is further configured to: according to the path setup request message sent by the first base station where the first UE is camped, learn to establish a direct communication path to the second UE, and perform an RRC reconfiguration process with the second UE, Establishing a radio bearer for direct communication between the second base station and the second UE;
  • the third unit 163 is further configured to: return a path setup response message to the first base station, where the IP address and the tunnel port number used by the second base station for direct communication, and the second base station control plane identifier are included.
  • the third path establishing device may be, for example, a base station, and may not include the foregoing first unit, and specifically includes:
  • the second unit 162 is configured to: according to the path setup request message sent by the first base station where the first UE resides, learn to establish a direct communication path for the second UE, perform an RRC reconfiguration process with the second UE, and establish a second base station and a radio bearer for direct communication between the second UEs;
  • the third unit 163 is configured to return a path setup response message to the first base station, where the IP address and tunnel port number used by the second base station for direct communication, and the second base station control plane identifier are included.
  • the third unit 163 is further configured to:
  • the information of the base station having a direct interface with itself is reported to the core network device.
  • the functions of the first unit 161, the second unit 162, and the third unit 163 described above may all be implemented by a processor.
  • the embodiment of the present invention further provides a core network device, a base station, and a system.
  • the specific content of the core network device, the base station, and the system may be implemented by referring to the foregoing method, and details are not described herein.
  • a core network device structure diagram provided by an embodiment of the present invention includes: a processor 1701, a memory 1702;
  • the memory 1702 is configured to store one or more executable programs, and is used to configure the processor 1701;
  • the processor 1701 is configured with one or more executable programs, and the one or more executable programs are configured to perform a method for determining a first base station and a second UE where the first user equipment UE camps The second base station that camps on can establish a communication link; for initiating establishment of the first base station and the first UE between the first UE and the second UE The direct communication path of the two base stations.
  • the processor 1701 determines that the first base station where the first UE camps and the second base station where the second UE resides can establish a communication link in one of the following manners:
  • Manner 1 determining, according to the pre-configured information of the direct interface between the first base station and the second base station, that a communication link can be established between the first base station and the second base station;
  • Manner 2 acquiring, when establishing a non-user equipment UE-related connection with the first base station, information about the second base station that is directly interfaced with the first base station by the first base station, according to the obtained information Determining that a communication link can be established between the first base station and the second base station; or, when establishing a non-UE related connection with the second base station, acquiring the information reported by the second base station Determining, by the second base station, information of the first base station that is directly connected, and determining, according to the obtained information, that a communication link can be established between the first base station and the second base station;
  • Manner 3 Send, by using the UE related signaling, the first base station, whether an inquiry message of the communication link can be established between the first base station and the second base station, where the second base station identifier is carried, when receiving the When the receiving message is returned by the first base station, determining that a communication link can be established between the first base station and the second base station; or sending the second base station and the second base station by using UE related signaling Determining whether the first base station can establish an inquiry message of the communication link, where the first base station identifier is carried, and when receiving the accept message returned by the second base station, determining the second base station and the first base station A communication link can be established.
  • the processor 1701 is specifically configured to:
  • a direct communication path between the first UE and the second UE via the first base station and the second base station is initiated, triggered by a direct communication request message of the UE.
  • the processor 1701 is specifically configured to:
  • the processor 1701 sends a direct path tunnel information request message to the first base station, and receives an IP address and a tunnel port number used by the first base station for direct communication returned by the first base station; or And the initiating unit sends an inquiry message to the first base station, and obtains an IP address and a tunnel port number used by the first base station for direct communication from an accept message returned by the first base station.
  • the processor 1701 is specifically configured to:
  • the first base station After receiving the path establishment triggering command, the first base station sends a path establishment request message to the second base station, where the IP address and the tunnel port number of the user plane used by the first base station for direct communication are carried. a base station control plane identifier, and the identifier information used by the second base station to determine the UE;
  • the second base station is configured to establish a direct communication path for the second UE according to the identifier information of the UE in the path setup request message sent by the first base station, and the second base station performs wireless with the second UE.
  • Resource Control RRC a matching procedure, establishing a radio bearer for direct communication between the second base station and the second UE;
  • the bus architecture may include any number of interconnected buses and bridges, specifically linked by one or more processors represented by processor 1701 and various circuits of memory represented by memory 1702.
  • the bus architecture can also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be further described herein.
  • the bus interface provides an interface.
  • a base station structure diagram includes: a processor 1801, a memory 1802, and a transceiver 1803;
  • the memory 1802 is configured to store one or more executable programs, and is used to configure the processor 1801;
  • the transceiver 1803 is configured to receive and send data under the control of the processor 1801;
  • the processor 1801 is configured with one or more executable programs, where the one or more executable programs are configured to: receive a path setup request message sent by a core network device, where the first user is carried The IP address and the tunnel port number used by the first base station where the device UE resides for direct communication; or the IP address and tunnel port number used by the second base station where the second UE resides for direct communication;
  • radio resource control RRC reconfiguration procedure with the second UE, establishing a radio bearer for direct communication between the device and the second UE; or performing radio resource control RRC with the first UE a matching procedure, establishing a radio bearer for direct communication between the first base station and the first UE;
  • the processor 1801 is further configured to:
  • the core network device When establishing a non-UE related connection with the core network device, the core network device reports information of a base station that has a direct interface with itself.
  • the processor 1801 is further configured to:
  • the bus architecture may include any number of interconnected buses and bridges, specifically linked by one or more processors represented by processor 1801 and various circuits of memory represented by memory 1802.
  • the bus architecture can also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be further described herein.
  • the bus interface provides an interface.
  • Transceiver 1803 can be a plurality of components, including a transmitter and a transceiver, providing means for communicating with various other devices on a transmission medium.
  • the processor 1801 is responsible for managing the bus architecture and general processing, and the memory 1802 can store data used by the processor 1801 in performing operations.
  • a base station structure diagram provided by an embodiment of the present invention includes: a processor 1901, a memory 1902, and a transceiver 1903;
  • the memory 1902 is configured to store one or more executable programs, and is used to configure the processor 1901;
  • the transceiver 1903 is configured to receive and send data under the control of the processor 1901;
  • the processor 1901 is configured with one or more executable programs, where the one or more executable programs are configured to: receive a path establishment trigger command sent by a core network device, where the second user is carried a second base station identifier that the device UE camps on, and identifier information used by the second base station to determine the UE; and configured to send a path setup request message to the second base station, where the IP of the user plane used by the first base station for direct communication is carried An address and a tunnel port number, a first base station control plane identifier, and identifier information used by the second base station to determine the UE, configured to perform radio resource control RRC reconfiguration with the first UE, and to the core network device Return path establishment trigger response message;
  • the processor 1901 is further configured to:
  • the core network device When establishing a non-UE related connection with the core network device, the core network device reports information of a base station that has a direct interface with itself.
  • the processor 1901 is further configured to:
  • the processor 1901 is further configured to:
  • the second base station includes an IP address and a tunnel port number for direct communication, and a second base station control plane identifier.
  • the bus architecture may include any number of interconnected buses and bridges, specifically linked by one or more processors represented by processor 1901 and various circuits of memory represented by memory 1902.
  • the bus architecture can also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be further described herein.
  • the bus interface provides an interface.
  • the transceiver 1903 can be a plurality of components, including a transmitter and a transceiver, providing means for communicating with various other devices on a transmission medium.
  • the processor 1901 is responsible for managing the bus architecture and general processing, and the memory 1902 can store data used by the processor 1901 when performing operations.
  • an embodiment of the present invention provides a path establishment system, where the system includes: a core network device 2001 and a base station 2002, where
  • the core network device 2001 is used to:
  • Determining that the first base station where the first user equipment UE camps and the second base station where the second UE camps may establish a communication link; and initiating establishing between the first UE and the second UE via the Directly between a base station and the second base station Communication path
  • the base station 2002 is used to:
  • radio resource control RRC reconfiguration procedure with the second UE, establishing a radio bearer for direct communication between the device and the second UE; or performing radio resource control RRC with the first UE a matching procedure, establishing a radio bearer for direct communication between the first base station and the first UE;
  • an embodiment of the present invention provides a path establishment system, where the system includes: a core network device 2101 and a base station 2102, where
  • the core network device 2101 is configured to:
  • Determining that the first base station where the first user equipment UE camps and the second base station where the second UE camps may establish a communication link; and initiating establishing between the first UE and the second UE via the a direct communication path between a base station and the second base station;
  • the base station 2102 is configured to:
  • a message where the IP address and the tunnel port number of the user plane used by the first base station for direct communication, the first base station control plane identifier, and the identifier information used by the second base station to determine the UE are used;
  • the UE performs radio resource control RRC reconfiguration, and returns a path establishment trigger response message to the core network device;
  • embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Moreover, the invention can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage and optical storage, etc.) including computer usable program code.
  • the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory include a system of instructions.
  • the instruction means implements the functions specified in a block or blocks of a flow or a flow and/or a block diagram of the flowchart.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
  • the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention concerne un procédé, un dispositif et un système d'établissement de chemin, ainsi qu'un dispositif de réseau principal, utilisés pour établir un chemin de communication dans un scénario dans lequel deux équipements utilisateur (UE) établissent une communication directe par l'intermédiaire de deux nœuds B évolués (eNB). Un procédé d'établissement de chemin décrit dans la présente invention comprend les opérations suivantes : un dispositif de réseau principal détermine qu'une première station de base dans laquelle un premier UE réside et une seconde station de base dans laquelle un second UE réside peuvent établir une liaison de communication ; le dispositif de réseau principal initie l'établissement d'un chemin de communication directe entre le premier UE et le second UE par l'intermédiaire de la première station de base et de la seconde station de base.
PCT/CN2015/073129 2014-02-20 2015-02-15 Procédé, dispositif et système d'établissement de chemin et dispositif de réseau principal WO2015124104A1 (fr)

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CN201410058859.8A CN104869659B (zh) 2014-02-20 2014-02-20 一种路径建立方法、设备及系统、核心网设备

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