WO2015124104A1 - 一种路径建立方法、设备及系统、核心网设备 - Google Patents

一种路径建立方法、设备及系统、核心网设备 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)
French (fr)
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/zh

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W76/00Connection management
    • H04W76/10Connection setup
    • H04W76/14Direct-mode setup
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W76/00Connection management
    • H04W76/10Connection 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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Abstract

一种路径建立方法、设备及系统,以及一种核心网设备,用以实现两个UE经由两个eNB进行直接通信场景下的通信路径的建立。本发明提供的一种路径建立方法包括:核心网设备确定第一UE驻留的第一基站和第二UE驻留的第二基站可以建立通信链路;核心网设备发起建立第一UE和第二UE之间的经由第一基站和第二基站的直接通信路径。

Description

一种路径建立方法、设备及系统、核心网设备
本申请要求在2014年2月20日提交中华人民共和国知识产权局、申请号为201410058859.8、发明名称为“一种路径建立方法、设备及系统、核心网设备”的中国专利申请的优先权,其全部内容通过引用结合在本申请中。
技术领域
本发明涉及通信技术领域,尤其涉及一种路径建立方法、设备及系统、核心网设备。
背景技术
邻近通信中的一种场景是两个用户设备(User Equipment,UE)通过一个或多个演进型基站(evolved NodeB,eNB)进行直接通信。
现有协议定义的两个UE间在通信时,其数据通道如图1所示,UE 1将数据发送到服务的eNB1,而eNB1会将数据传递到UE1的服务的核心网设备:服务网关(Serving GW)和分组数据网络网关(Packet Data Network Gateway,PGW)。PGW会根据UE的路由表将数据路由到UE2的服务PGW和Serving GW,UE2的服务Serving GW将数据传递到UE2的服务eNB2,再通过eNB2传递给UE2。图1中所示的例子是当UE1和UE2的服务Serving GW和PGW相同时的场景,此时省略了为UE1服务的PGW将数据路由到为UE2服务的PGW的过程。
由图1所示可以看出,即使通信的两个UE之间的距离非常近,通信数据也需要通过各自的服务eNB以及核心网才能到达对端。而邻近通信技术正在研究当通信双方满足一定条件时(如距离很近),两个UE之间的直接通信或者仅经由eNB的直接通信,其数据传输路径如图1a和图1b所示。
图1a和图1b所示为实现邻近通信后UE之间的数据传输路径图。UE1和UE2可以不需要经过移动网络设备直接传输数据,或者通过同一个eNB转发数据而不需要经过核心网。这种传输方式可以减少数据传输延时,并且可以节省网络的资源,特别是核心网的网络资源。
除了上述两种路由路径外,满足邻近通信条件的UE还可以通过两个eNB进行直接通信,如图3所示,UE1和UE2之间的邻近通信数据分别经过eNB1和eNB2传输,无需经过核心网。
具有邻近通信能力的UE需要在一定范围之内才能进行邻近通信。判断两个UE邻近关系的过程称为邻近通信业务(Proximity-based Services,ProSe)发现过程。ProSe发现分为两大类方法:直接发现和基于核心网的发现。
直接发现是指ProSe UE直接通过UE之间的信令发现其附近的ProSe UE的过程。
基于核心网的发现是指由网络来判断两个ProSe UE是否满足邻近通信条件的过程。一种基于核心网的发现流程如图4所示,包括步骤:
1a和1b:UE A和UE B分别注册到各自的ProSe功能(Function)实体中,所述ProSe功能实体在图中示为邻近通信功能A或邻近通信功能B。其中,ProSe功能实体是核心网中执行ProSe发现、标识映射等的实体。
2.UE A向网络请求与UE B之间的邻近信息,比如,当UE A与UE B之间的距离小于一 定值时收到网络通知。
3a和3b:网络分别对UE A和UE B进行定位。在该过程中,网络可以获知UE当前驻留的小区,以及更细粒度的位置信息。
4.当ProSe功能实体A(图中示为邻近通信功能A)检测到UE A和UE B处于邻近范围内时,ProSe功能实体A向UE A发出通知消息。
但是,现有技术没有给出两个UE经由两个eNB进行直接通信场景下,通信路径如何建立的方案。
发明内容
本发明实施例提供了一种路径建立方法、设备及系统,以及一种核心网设备,用以实现两个UE经由两个eNB进行直接通信场景下的通信路径的建立。
本发明实施例提供了一种路径建立方法包括:
核心网设备确定第一UE驻留的第一基站和第二UE驻留的第二基站可以建立通信链路;
核心网设备发起建立第一UE和第二UE之间的经由第一基站和第二基站的直接通信路径。
从而实现了核心网发起的两个UE经由两个eNB进行直接通信场景下的通信路径的建立。
较佳地,所述核心网设备确定第一UE驻留的第一基站和第二UE驻留的第二基站可以建立通信链路,包括下列方式之一:
方式一:核心网设备根据预先配置的第一基站和第二基站之间具有直接接口的信息,确定第一基站与第二基站之间可以建立通信链路;
方式二:核心网设备在建立与第一基站之间的非用户设备UE相关连接时,获取该第一基站上报的与该第一基站有直接接口的第二基站的信息,从而确定第一基站与第二基站之间可以建立通信链路;或者,核心网设备在建立与第二基站之间的非UE相关连接时,获取该第二基站上报的与该第二基站有直接接口的第一基站的信息,从而确定第一基站与第二基站之间可以建立通信链路;
方式三:核心网设备通过UE相关信令向第一基站发送该第一基站与第二基站之间是否可以建立通信链路的询问消息,其中携带第二基站标识,当接收到第一基站返回的接受消息时,核心网设备确定第一基站与第二基站之间可以建立通信链路;或者,核心网设备通过UE相关信令向第二基站发送该第二基站与第一基站之间是否可以建立通信链路的询问消息,其中携带第一基站标识,当接收到第二基站返回的接受消息时,核心网设备确定第二基站与第一基站之间可以建立通信链路。
从而核心网设备可以确定第一UE驻留的第一基站和第二UE驻留的第二基站可以建立通信链路。
较佳地,核心网设备发起建立第一UE和第二UE之间的经由第一基站和第二基站的直接通信路径,包括:
核心网设备在UE的直接通信请求消息触发下,发起建立第一UE和第二UE之间的经由第一基站和第二基站的直接通信路径。
从而核心网设备可以在UE的直接通信请求消息触发下,发起建立经由两个基站的直接通信路径。
较佳地,核心网设备发起建立第一UE和第二UE之间的经由第一基站和第二基站的直接通信路径,包括:
核心网设备获取第一基站用于直接通信的IP地址和隧道端口号;
核心网设备向第二基站发送路径建立请求消息,其中携带第一基站用于直接通信的IP地址和隧道端口号;核心网设备接收第二基站返回的路径建立响应消息,其中包含第二基站用于直接通信的IP地址和隧道端口号;
核心网设备向第一基站发送路径建立请求消息,其中携带第二基站用于直接通信的IP地址和隧道端口号,核心网设备接收第一基站返回的路径建立响应消息。
从而核心网设备基于内部判断,基于核心网发起建立经由两个基站的直接通信路径。
较佳地,所述核心网设备获取第一基站用于直接通信的IP地址和隧道端口号,包括:
核心网设备向第一基站发送直接路径隧道信息请求消息,并接收第一基站返回的第一基站用于直接通信的IP地址和隧道端口号;或者,核心网设备向第一基站发送询问消息,并从第一基站返回的接受消息中获得第一基站用于直接通信的IP地址和隧道端口号。
较佳地,核心网设备发起建立第一UE和第二UE之间的经由第一基站和第二基站的直接通信路径,包括:
核心网设备向第一基站发送路径建立触发命令,其中携带第二基站标识以及用于第二基站确定UE的标识信息;
第一基站收到核心网设备发送的路径建立触发命令后,向第二基站发送路径建立请求消息,其中携带第一基站用于直接通信的用户面的IP地址和隧道端口号、第一基站控制面标识,以及所述用于第二基站确定UE的标识信息;
第二基站根据第一基站发送的路径建立请求消息中的UE的标识信息,获知要对第二UE建立直接通信路径,第二基站与第二UE进行RRC重配过程,建立第二基站与第二UE之间用于直接通信的无线承载;
第二基站向第一基站返回路径建立响应消息,其中包含第二基站用于直接通信的IP地址和隧道端口号,以及第二基站控制面标识;
核心网设备接收第一基站返回的路径建立触发响应消息。
从而核心网设备可以基于内部判断,基于基站发起建立经由两个基站的直接通信路径。
本发明实施例提供了一种路径建立方法,包括:
第二UE驻留的第二基站接收核心网设备发送的路径建立请求消息,其中携带第一UE驻留的第一基站用于直接通信的IP地址和隧道端口号;
第二基站与第二UE进行RRC重配过程,建立第二基站与第二UE之间用于直接通信的无线承载;
第二基站向核心网设备返回路径建立响应消息,其中包含第二基站用于直接通信的IP地址和隧道端口号。
本发明实施例提供了一种路径建立方法,包括:
第一UE驻留的第一基站接收核心网设备发送的路径建立请求消息,其中携带第二UE 驻留的第二基站用于直接通信的IP地址和隧道端口号;
第一基站与第一UE进行RRC重配过程,建立第一基站与第一UE之间用于直接通信的无线承载;
第一基站向核心网设备返回路径建立响应消息。
从而在基站侧,实现了核心网设备基于核心网发起建立经由两个基站的直接通信路径。
较佳地,该方法还包括:
第一基站和/或第二基站在建立与核心网设备之间的非UE相关连接时,向核心网设备上报与自身有直接接口的基站的信息。
从而使核心网可以确定通信双方UE各自所在的基站可以建立通信链路。
较佳地,该方法还包括:
第一基站接收核心网设备发送的该第一基站与第二基站之间是否可以建立通信链路的询问消息,其中携带第二基站标识;
第一基站当根据第二基站标识确定第一基站与该第二基站之间可以建立通信链路时,向核心网设备返回接受消息。优选地,第一基站还可以在接受消息中携带第一基站用于直接通信的IP地址和隧道端口号。
从而使核心网可以确定通信双方UE各自所在的基站可以建立通信链路。
本发明实施例提供了一种路径建立方法,包括:
第一UE驻留的第一基站接收核心网设备发送的路径建立触发命令,其中携带第二基站标识,以及用于第二基站确定UE的标识信息;
第一基站向第二UE驻留的第二基站发送路径建立请求消息,其中携带第一基站用于直接通信用户面的IP地址和隧道端口号、第一基站控制面标识,以及用于第二基站确定UE的标识信息;
第一基站与第一UE进行RRC重配,并且第一基站向核心网设备返回路径建立触发响应消息。
本发明实施例提供了一种路径建立方法,包括:
第二UE驻留的第二基站根据第一UE驻留的第一基站发送的路径建立请求消息,获知要对第二UE建立直接通信路径,第二基站与第二UE进行RRC重配过程,建立第二基站与第二UE之间用于直接通信的无线承载;
第二基站向第一基站返回路径建立响应消息,其中包含第二基站用于直接通信的IP地址和隧道端口号,以及第二基站控制面标识。
从而在基站侧,实现了核心网设备基于基站发起建立经由两个基站的直接通信路径。
较佳地,该方法还包括:
第一基站和/或第二基站在建立与核心网设备之间的非UE相关连接时,向核心网设备上报与自身有直接接口的基站的信息。
从而使核心网可以确定通信双方UE各自所在的基站可以建立通信链路。
较佳地,该方法还包括:
第一基站接收核心网设备发送的该第一基站与第二基站之间是否可以建立通信链路的询问消息,其中携带第二基站标识;
第一基站当根据第二基站标识确定第一基站与该第二基站之间可以建立通信链路时,向核心网设备返回接受消息。
从而使核心网可以确定通信双方UE各自所在的基站可以建立通信链路。
本发明实施例提供了一种核心网设备,包括:
确定单元,用于确定第一UE驻留的第一基站和第二UE驻留的第二基站可以建立通信链路;
发起单元,用于发起建立第一UE和第二UE之间的经由第一基站和第二基站的直接通信路径。
从而实现了核心网发起的两个UE经由两个eNB进行直接通信场景下的通信路径的建立。
较佳地,所述确定单元采用下列方式之一确定第一UE驻留的第一基站和第二UE驻留的第二基站可以建立通信链路:
方式一:根据预先配置的第一基站和第二基站之间具有直接接口的信息,确定第一基站与第二基站之间可以建立通信链路;
方式二:在建立与第一基站之间的非用户设备UE相关连接时,获取该第一基站上报的与该第一基站有直接接口的第二基站的信息,从而确定第一基站与第二基站之间可以建立通信链路;或者,在建立与第二基站之间的非UE相关连接时,获取该第二基站上报的与该第二基站有直接接口的第一基站的信息,从而确定第一基站与第二基站之间可以建立通信链路;
方式三:通过UE相关信令向第一基站发送该第一基站与第二基站之间是否可以建立通信链路的询问消息,其中携带第二基站标识,当接收到第一基站返回的接受消息时,确定第一基站与第二基站之间可以建立通信链路;或者,通过UE相关信令向第二基站发送该第二基站与第一基站之间是否可以建立通信链路的询问消息,其中携带第一基站标识,当接收到第二基站返回的接受消息时,确定第二基站与第一基站之间可以建立通信链路。
从而核心网设备可以确定第一UE驻留的第一基站和第二UE驻留的第二基站可以建立通信链路。
较佳地,所述发起单元,具体用于:
在UE的直接通信请求消息触发下,发起建立第一UE和第二UE之间的经由第一基站和第二基站的直接通信路径。
从而核心网设备可以在UE的直接通信请求消息触发下,发起建立经由两个基站的直接通信路径。
较佳地,所述发起单元,具体用于:
获取第一基站用于直接通信的IP地址和隧道端口号;
向第二基站发送路径建立请求消息,其中携带第一基站用于直接通信的IP地址和隧道端口号;接收第二基站返回的路径建立响应消息,其中包含第二基站用于直接通信的IP地址和隧道端口号;
向第一基站发送路径建立请求消息,其中携带第二基站用于直接通信的IP地址和隧道端口号;接收第一基站返回的路径建立响应消息。
从而核心网设备基于内部判断,基于核心网发起建立经由两个基站的直接通信路径。
较佳地,所述发起单元,具体用于:
向第一基站发送路径建立触发命令,其中携带第二基站标识以及用于第二基站确定UE的标识信息;
所述第一基站收到所述路径建立触发命令后,向所述第二基站发送路径建立请求消息,其中携带所述第一基站用于直接通信的用户面的IP地址和隧道端口号、第一基站控制面标识,以及所述用于所述第二基站确定UE的标识信息;
所述第二基站根据所述第一基站发送的路径建立请求消息中的UE的标识信息,获知要对所述第二UE建立直接通信路径,所述第二基站与所述第二UE进行无线资源控制RRC重配过程,建立所述第二基站与所述第二UE之间用于直接通信的无线承载;
接收第一基站返回的路径建立触发响应消息。
从而核心网设备可以基于内部判断,基于基站发起建立经由两个基站的直接通信路径。
本发明实施例提供了一种路径建立设备,包括:
第一单元,用于接收核心网设备发送的路径建立请求消息,其中携带第一UE驻留的第一基站用于直接通信的IP地址和隧道端口号;
第二单元,用于与第二UE进行RRC重配过程,建立在所述设备与第二UE之间用于直接通信的无线承载;
第三单元,用于向核心网设备返回路径建立响应消息,其中包含第二基站用于直接通信的IP地址和隧道端口号
较佳地,所述第三单元还用于:
在建立与核心网设备之间的非UE相关连接时,向核心网设备上报与自身有直接接口的基站的信息。
较佳地,所述第一单元还用于:接收核心网设备发送的该第一基站与第二基站之间是否可以建立通信链路的询问消息,其中携带第二基站标识;
所述第三单元还用于:当根据第二基站标识确定第一基站与该第二基站之间可以建立通信链路时,向核心网设备返回接受消息。
本发明实施例提供了一种路径建立设备,包括:
第一单元,用于接收核心网设备发送的路径建立触发命令,其中携带第二UE驻留的第二基站标识,以及用于第二基站确定UE的标识信息;
第三单元,用于向第二基站发送路径建立请求消息,其中携带第一基站用于直接通信的用户面的IP地址和隧道端口号、第一基站控制面标识,以及用于第二基站确定UE的标识信息;
第二单元,用于与第一UE进行RRC重配,并且向核心网设备返回路径建立触发响应消息。
较佳地,所述第三单元还用于:
在建立与核心网设备之间的非UE相关连接时,向核心网设备上报与自身有直接接口的基站的信息。
较佳地,所述第一单元还用于:接收核心网设备发送的该第一基站与第二基站之间是否可以建立通信链路的询问消息,其中携带第二基站标识;
所述第三单元还用于:当根据第二基站标识确定第一基站与该第二基站之间可以建立通信链路时,向核心网设备返回接受消息。
较佳地,第二单元还用于:根据第一UE驻留的第一基站发送的路径建立请求消息,获知要对第二UE建立直接通信路径,与第二UE进行RRC重配过程,建立第二基站与第二UE之间用于直接通信的无线承载;
第三单元还用于:向第一基站返回路径建立响应消息,其中包含第二基站用于直接通信的IP地址和隧道端口号,以及第二基站控制面标识。
本发明实施例提供了一种路径建立设备,包括:
第二单元,用于根据第一UE驻留的第一基站发送的路径建立请求消息,获知要对第二UE建立直接通信路径,与第二UE进行RRC重配过程,建立第二基站与第二UE之间用于直接通信的无线承载;
第三单元,用于向第一基站返回路径建立响应消息,其中包含第二基站用于直接通信的IP地址和隧道端口号,以及第二基站控制面标识。
较佳地,所述第三单元还用于:
在建立与核心网设备之间的非UE相关连接时,向核心网设备上报与自身有直接接口的基站的信息。
本发明实施例提供了一种路径建立系统,包括:第一UE驻留的第一基站和第二UE驻留的第二基站,其中,
第二基站用于:
接收核心网设备发送的路径建立请求消息,其中携带第一UE驻留的第一基站用于直接通信的IP地址和隧道端口号;
与第二UE进行RRC重配过程,建立第二基站与第二UE之间用于直接通信的无线承载;
向核心网设备返回路径建立响应消息,其中包含第二基站用于直接通信的IP地址和隧道端口号;
第一基站用于:
接收核心网设备发送的路径建立请求消息,其中携带第二基站用于直接通信的IP地址和隧道端口号;
与第一UE进行RRC重配过程,建立第一基站与第一UE之间用于直接通信的无线承载;
向核心网设备返回路径建立响应消息。
从而在基站侧,实现了核心网设备基于核心网发起建立经由两个基站的直接通信路径。
较佳地,所述第一基站还用于:
接收核心网设备发送的直接路径隧道信息请求消息,并返回第一基站用于直接通信的IP地址和隧道端口号给核心网设备;或者,接收核心网设备发送的询问消息,并返回接受消息,其中携带第一基站用于直接通信的IP地址和隧道端口号。
较佳地,第一基站和/或第二基站还用于:在建立与核心网设备之间的非UE相关连接时,向核心网设备上报与自身有直接接口的基站的信息。
从而使核心网可以确定通信双方UE各自所在的基站可以建立通信链路。
较佳地,第一基站还用于:
接收核心网设备发送的该第一基站与第二基站之间是否可以建立通信链路的询问消息,其中携带第二基站标识;
当根据第二基站标识确定第一基站与该第二基站之间可以建立通信链路时,向核心网设备返回接受消息。优选地,在接受消息中携带第一基站用于直接通信的IP地址和端口号。
从而使核心网可以确定通信双方UE各自所在的基站可以建立通信链路。
本发明实施例提供了一种路径建立系统,包括:第一UE驻留的第一基站和第二UE驻留的第二基站,其中,
第一基站用于:
接收核心网设备发送的路径建立触发命令,其中携带第二基站标识,以及用于第二基站确定UE的标识信息;
向第二UE驻留的第二基站发送路径建立请求消息,其中携带第一基站用于直接通信用户面的IP地址和隧道端口号、第一基站控制面标识,以及用于第二基站确定UE的标识信息;
第二基站用于:
根据第一基站发送的路径建立请求消息,获知要对第二UE建立直接通信路径;与第二UE进行RRC重配过程,建立第二基站与第二UE之间用于直接通信的无线承载;
向第一基站返回路径建立响应消息,其中包含第二基站用于直接通信的IP地址和隧道端口号,以及第二基站控制面标识;
第一基站还用于:与第一UE进行RRC重配,并且向核心网设备返回路径建立触发响应消息。
从而在基站侧,实现了核心网设备基于基站发起建立经由两个基站的直接通信路径。
较佳地,第一基站和/或第二基站还用于:在建立与核心网设备之间的非UE相关连接时,向核心网设备上报与自身有直接接口的基站的信息。
从而使核心网可以确定通信双方UE各自所在的基站可以建立通信链路。
较佳地,第一基站还用于:
接收核心网设备发送的该第一基站与第二基站之间是否可以建立通信链路的询问消息,其中携带第二基站标识;
当根据第二基站标识确定第一基站与该第二基站之间可以建立通信链路时,向核心网设备返回接受消息。
从而使核心网可以确定通信双方UE各自所在的基站可以建立通信链路。
本发明实施例提供了一种核心网设备,该设备包括:处理器、存储器;
所述存储器,用于存储一个或多个可执行程序,被用于配置所述处理器;
所述处理器,被配置了一个或多个可执行程序,所述一个或多个可执行程序用于执行以下方法:用于确定第一用户设备UE驻留的第一基站和第二UE驻留的第二基站可以建立通信链路;用于发起建立所述第一UE和所述第二UE之间的经由所述第一基站和所述第二基站的直接通信路径。
本发明实施例提供了一种基站,包括:处理器、存储器、收发机;
所述存储器,用于存储一个或多个可执行程序,被用于配置所述处理器;
所述收发机,用于在所述处理器的控制下接收和发送数据;
所述处理器,被配置了一个或多个可执行程序,所述一个或多个可执行程序用于执行以下方法:用于接收核心网设备发送的路径建立触发命令,其中携带第二用户设备UE驻留的第二基站标识,以及用于第二基站确定UE的标识信息;用于向所述第二基站发送路径建立请求消息,其中携带第一基站用于直接通信的用户面的IP地址和隧道端口号、第一基站控制面标识,以及用于所述第二基站确定UE的标识信息;用于与所述第一UE进行无线资源控制RRC重配,并且向所述核心网设备返回路径建立触发响应消息;
用于根据第一用户设备UE驻留的第一基站发送的路径建立请求消息,获知要对第二UE建立直接通信路径,与所述第二UE进行无线资源控制RRC重配过程,建立第二基站与所述第二UE之间用于直接通信的无线承载;用于向所述第一基站返回路径建立响应消息,其中包含所述第二基站用于直接通信的IP地址和隧道端口号,以及第二基站控制面标识。
本发明实施例提供了一种路径建立系统,包括:核心网设备和基站,其中,
所述核心网设备用于:
确定第一用户设备UE驻留的第一基站和第二UE驻留的第二基站可以建立通信链路;用于发起建立所述第一UE和所述第二UE之间的经由所述第一基站和所述第二基站的直接通信路径;
所述基站用于:
接收核心网设备发送的路径建立请求消息,其中携带第一用户设备UE驻留的第一基站用于直接通信的IP地址和隧道端口号;或者,携带第二UE驻留的第二基站用于直接通信的IP地址和隧道端口号;
用于与第二UE进行无线资源控制RRC重配过程,建立在所述设备与所述第二UE之间用于直接通信的无线承载;或者,与所述第一UE进行无线资源控制RRC重配过程,建立所述第一基站与所述第一UE之间用于直接通信的无线承载;
用于向所述核心网设备返回路径建立响应消息,其中包含第二基站用于直接通信的IP地址和隧道端口号;或者,包含第一基站用于直接通信的IP地址和端口号。
本发明实施例提供了一种路径建立系统,该系统包括:核心网设备和基站,其中,
所述核心网设备用于:
确定第一用户设备UE驻留的第一基站和第二UE驻留的第二基站可以建立通信链路;用于发起建立所述第一UE和所述第二UE之间的经由所述第一基站和所述第二基站的直接通信路径;
所述基站用于:
接收核心网设备发送的路径建立触发命令,其中携带第二用户设备UE驻留的第二基站标识,以及用于第二基站确定UE的标识信息;用于向所述第二基站发送路径建立请求消息,其中携带第一基站用于直接通信的用户面的IP地址和隧道端口号、第一基站控制面标识,以及用于所述第二基站确定UE的标识信息;用于与所述第一UE进行无线资源控制RRC重配,并且向所述核心网设备返回路径建立触发响应消息;
用于根据第一用户设备UE驻留的第一基站发送的路径建立请求消息,获知要对第二UE建立直接通信路径,与所述第二UE进行无线资源控制RRC重配过程,建立第二基站与所述第二UE之间用于直接通信的无线承载;用于向所述第一基站返回路径建立响应消息,其中 包含所述第二基站用于直接通信的IP地址和隧道端口号,以及第二基站控制面标识。
附图说明
图1现有技术中设备间通信的数据通道示意图;
图2a和图2b为现有技术中邻近通信路径示意图;
图3为现有技术中经由两个eNB的直接通信示意图;
图4为现有技术中一种基于核心网的发现流程示意图;
图5为本发明实施例一提供的一种路径建立方法的流程示意图;
图6为本发明实施例二提供的一种路径建立方法的流程示意图;
图7为本发明实施例三提供的一种路径建立方法的流程示意图;
图8为本发明实施例四提供的一种路径建立方法的流程示意图;
图9为本发明实施例五提供的一种路径建立方法的流程示意图;
图10为本发明实施例六提供的当UE1和UE2所属的核心网设备不同时,UE1的核心网设备获知UE2所属的核心网设备的方法流程示意图;
图11为本发明实施例提供的核心网侧的一种路径建立方法的流程示意图;
图12为本发明实施例提供的接入网侧的一种路径建立方法的流程示意图;
图13为本发明实施例提供的接入网侧的另一种路径建立方法的流程示意图;
图14为本发明实施例提供的一种核心网设备的结构示意图;
图15为本发明实施例提供的另一种核心网设备的结构示意图;
图16为本发明实施例提供的一种路径建立设备的结构示意图;
图17为本发明实施例提供的一种核心网设备的结构示意图;
图18为本发明实施例提供的一种基站的结构示意图;
图19为本发明实施例提供的一种基站的结构示意图;
图20为本发明实施例提供了一种路径建立系统的结构示意图;
图21为本发明实施例提供了一种路径建立系统的结构示意图。
具体实施方式
本发明实施例提供了一种路径建立方法、设备及系统,以及一种核心网设备,用以实现两个UE经由两个eNB进行直接通信场景下的通信路径的建立。
本发明实施例提出一种建立经由两个eNB的邻近通信业务直接通信路径的方案。本发明实施例中,进行邻近通信的UE包括通信发起方UE和通信终止方UE,下文分别简称为第一UE和第二UE。若无特殊指示,“UE”均表示第一UE。第一UE和第二UE各自驻留的基站分别称为第一基站和第二基站,本发明实施例中仅关注第一基站和第二基站不同的场景。
本发明实施例提供的一种由网络发起的经由两个eNB的直接路径建立方法,包括两个大的步骤:
第一步骤:核心网设备确定通信双方UE各自所在的基站可以建立通信链路。
第二步骤:核心网设备发起建立经由两个基站的直接通信路径。
所述第一步骤具体有三种实现方式:
方式一:核心网设备中配置有下属基站两两之间是否有直接接口的信息。该配置由运营商基于网络拓扑完成。
方式二:基站在建立与核心网设备之间的非UE相关连接时,向核心网设备上报与自身有直接接口的其它基站的信息。根据该信息,核心网设备维护基站之间直接接口的数据库。此处,所述核心网设备可以是移动性管理实体。
方式三:核心网设备通过UE相关信令向第一基站直接发送询问消息,其中携带第二基站标识。其中,第二基站标识可以由核心网在邻近通信发现过程中获得,具体方法不在本发明范围之内。该方式三包括两个步骤:
步骤一:核心网设备向第一基站直接发送询问消息,其中携带第二基站标识。其中,第二基站的标识可以是eNB ID或演进的通用陆地无线接入网(Evolved Universal Terrestrial Radio Access Network,E-UTRAN)小区全球标识(E-UTRAN Cell Global Identity,ECGI)。
步骤二:第一基站根据第二基站标识判断自身与该第二基站之间是否可以建立通信链路,如果可以则向核心网返回接受消息,否则返回拒绝消息。
所述第二步骤中,核心网设备发起建立经由两个基站的直接通信路径的过程中,核心网设备可以在UE的直接通信请求消息触发下,发起建立经由两个基站的直接通信路径;或者,核心网设备也可以基于内部判断发起建立经由两个基站的直接通信路径,例如通过邻近发现结果显示第一UE和第二UE满足邻近通信条件,发起建立经由两个基站的直接通信路径。
具体地,核心网设备在UE的直接通信请求消息触发下,发起建立经由两个基站的直接通信路径时,UE向核心网设备发送的直接通信请求消息中包含第一UE标识和第二UE标识。其中,第一UE标识可以是全球移动用户标识(International Mobile Subscriber Identity,IMSI)或其邻近通信标识,如ProSe UE ID或ProSe应用(Application)ID。第二UE标识可以是邻近通信标识,如ProSe UE ID或ProSe Application ID。
核心网设备基于内部判断发起建立经由两个基站的直接通信路径时,具体包括两种方式:
方式一:基于核心网设备,具体包括步骤:
一、核心网设备获取第一基站用于直接通信的IP地址和隧道端口号。其中,核心网设备可以向第一基站发送直接路径隧道信息请求消息,第一基站收到后返回自身用于直接通信的IP地址和隧道端口号;或者,核心网可以通过询问消息获得第一基站用于直接通信的IP地址和隧道端口号。当第一基站收到询问消息后,如果第一基站与第二基站之间可以建立通信链路,则在接受消息中携带用于直接通信的IP地址和隧道端口号。
二、核心网设备向第二基站发送路径建立请求消息,其中携带第一基站用于直接通信的IP地址和隧道端口号。第二基站与第二UE进行RRC(Radio Resource Control,无线资源控制)重配过程,建立第二基站与第二UE之间用于直接通信的无线承载。第二基站向核心网设备返回路径建立响应消息,其中包含第二基站用于直接通信的IP地址和隧道端口号。
其中,关于核心网设备如何获知第二UE驻留的第二基站,包括:
核心网设备从第一UE的请求消息中获得第二UE的标识信息,并根据该标识信息获取到第二UE的永久标识,例如国际移动用户标识(International Mobile Subscriber Identifier,IMSI),其中,第二UE的标识信息和第二UE的永久标识如何映射,以及核心网设备如何获取到第二UE的永久标识,可以采用现有技术。
核心网设备根据第二UE的永久标识找到该UE的上下文信息,并根据UE的上下文信息可以确定UE的状态。
如果第二UE是空闲态,则核心网设备发起寻呼,从而可获得第二UE当前驻留的基站(也即第二基站)的标识;
如果第二UE是连接态,则核心网设备存储的第二UE的上下文信息中就包含第二基站的标识。
三、核心网设备向第一基站发送路径建立请求消息,其中携带第二基站用于直接通信的IP地址和隧道端口号。第一基站与第一UE进行RRC重配过程,建立第一基站与第一UE之间用于直接通信的无线承载。第一基站向核心网设备返回路径建立响应消息,其中包含第一基站用于直接通信的IP地址和端口号。
根据上述三个步骤,第一基站与第二基站通过核心网设备交互了建立直接通信路径所需参数,并分别建立了第一UE和第二UE与基站之间用于直接通信的无线承载,直接通信路径建立完毕。
另外,若第一UE和第二UE所属的核心网设备不同,则基于核心网设备发起建立经由两个基站的直接通信路径时:
核心网设备收到第一UE的请求消息时,根据其中包含的第二UE的标识,可以获知第二UE所属的核心网设备。
当采用核心网设备发起直接通信路径建立时,第一基站和第二基站之间的路径建立相关消息需要通过第一UE和第二UE各自所属的核心网设备进行中转。
方式二:基于基站,具体包括步骤:
一、核心网设备确定第一基站可以与第二基站建立通信链路后,向第一基站发送路径建立触发命令,其中携带第二基站标识,以及用于第二基站确定第二UE的标识信息。
二、第一基站收到路径建立触发命令后,向第二基站发送路径建立请求消息,其中携带第一基站用于直接通信用户面的IP地址和隧道端口号、第一基站控制面标识,以及第一步中收到的用于第二基站确定UE的标识信息。
三、第二基站根据第一基站发送的路径建立请求消息中的标识信息,获知要对第二UE建立直接通信路径。第二基站与第二UE进行RRC重配过程,建立第二基站与第二UE之间用于直接通信的无线承载。
四、第二基站向第一基站返回路径建立响应消息,其中包含第二基站用于直接通信的IP地址和隧道端口号,以及第二基站控制面标识。
五、第一基站与第一UE进行RRC重配。第一基站向核心网设备返回路径建立触发响应消息。
根据上述五个步骤,在核心网设备触发下,第一基站与第二基站直接交互建立直接通信路径所需参数,并分别建立了与第一UE和第二UE与基站之间用于直接通信的无线承载,直接通信路径建立完毕。
本发明实施例中所述的核心网设备,包括MME(Mobility Management Entity,移动性管理实体)和/或ProSe功能实体。
下面给出几个具体实施例的说明。
实施例一:
参见图5,路径建立过程包括步骤:
501.MME预先通过配置保存下属基站两两之间是否有直接接口的信息,MME无需与eNB交互。
502.eNB1向MME发起S1建立,在S1建立请求消息中携带与其有X2接口的一个或多个eNB的标识。
503.MME返回S1建立响应给eNB1。
504-505、eNB2采用相同的过程与MME建立S1连接。
通过上述过程,MME可以知道与下属任一eNB有直接接口的eNB标识。需要说明的是,步骤502、503与步骤504、505之间没有先后顺序。并且,步骤501和502+503/504+505是任选其一的。
实施例二:
UE1和UE2采用基于网络的邻近发现机制,UE1和UE2分别驻留于eNB1和eNB2,eNB1和eNB2连接到同一个MME。
参见图6,具体的路径建立过程包括步骤:
601.UE和网络执行基于网络的邻近发现过程,MME在该过程中获得UE1和UE2当前驻留基站的标识eNB1和eNB2。
602.UE1向MME发送邻近通信建立请求,其中携带UE1和UE2标识。
603.MME根据601步中获得的信息,可以知道UE2当前驻留基站对应的基站标识。MME向eNB1发送询问消息,其中携带eNB2标识。
604.eNB1根据配置信息可知eNB2与自身有X2接口,向MME返回响应消息,其中携带eNB1为直接路径分配的GPRS隧道协议(GPRS Tunneling Protocol,GTP)隧道端口号,即图6中的隧道端点标识(Tunneling Endpoint ID,TEID),以及eNB1用于直接通信的IP地址。
605.MME向eNB2发送E-UTRAN无线接入承载(E-UTRAN Radio Access Bearer,E-RAB)建立请求消息,其中携带604步中收到的eNB1IP地址和TEID。
606.eNB2发起RRC重配过程,建立与UE2之间用于邻近通信的无线承载。
607.eNB2向MME返回E-RAB建立响应,其中携带eNB2为直接路径分配的TEID,以及eNB2用于直接通信的IP地址。
608.MME向eNB1发送E-RAB建立请求消息,其中携带607步收到的eNB2IP地址和TEID,以及一个非接入层(Non Access Stratum,NAS)分组数据单元(Packet Data Unit,PDU),该PDU为MME发送给UE的邻近通信建立响应消息。
609.eNB1发起RRC重配过程,建立与UE1之间用于邻近通信的无线承载。eNB1在RRC重配过程中将NAS PDU发给UE1.
610.eNB1向MME返回E-RAB建立响应,其中携带eNB1的IP地址和TEID。至此,UE1、eNB1、eNB2、UE2之间的直接通信路径建立完成。
实施例三:
参见图7,路径建立过程包括步骤:
701.MME获得eNB1与eNB2是否可以建立直接通信链路的信息。
702.UE和网络执行基于网络的邻近发现过程,MME在该过程中获得UE1和UE2当前驻留基站的标识eNB1和eNB2。
703.UE1向MME发送邻近通信建立请求,其中携带UE1和UE2标识。
704.MME向eNB1发出直接路径隧道信息请求获得eNB1用于直接路径建立的IP地址和GTP端口号。
705.eNB1向MME返回直接路径隧道信息响应,其中包含用于邻近通信的IP地址和TEID。
后续步骤同实施例二中的步骤605-610,即
MME向eNB2发送E-UTRAN无线接入承载(E-UTRAN Radio Access Bearer,E-RAB)建立请求消息,其中携带eNB1IP地址和TEID。
eNB2发起RRC重配过程,建立与UE2之间用于邻近通信的无线承载。
eNB2向MME返回E-RAB建立响应,其中携带eNB2为直接路径分配的TEID,以及eNB2用于直接通信的IP地址。
MME向eNB1发送E-RAB建立请求消息,其中携带eNB2IP地址和TEID,以及一个非接入层(Non Access Stratum,NAS)分组数据单元(Packet Data Unit,PDU),该PDU为MME发送给UE的邻近通信建立响应消息。
eNB1发起RRC重配过程,建立与UE1之间用于邻近通信的无线承载。eNB1在RRC重配过程中将NAS PDU发给UE1.
eNB1向MME返回E-RAB建立响应,其中携带eNB1的IP地址和TEID。至此,UE1、eNB1、eNB2、UE2之间的直接通信路径建立完成。
实施例四:
参见图8,路径建立过程包括步骤:
801.MME获得eNB1与eNB2是否可以建立直接通信链路的信息。
802.UE和网络执行基于网络的邻近发现过程,MME在该过程中获得UE1和UE2当前驻留基站的标识eNB1和eNB2。
803.基于邻近发现结果和步骤801,MME判断UE1和UE2可以建立经由eNB1和eNB2的通信,则向eNB1发起路径建立触发命令,其中携带eNB2的标识,以及透明容器Container,该Container中携带eNB2在S1接口上的标识eNB2UE S1AP ID,MME通过现有技术即可获得和保存该标识,其中,Container中携带eNB2在S1接口上的标识eNB2UE S1AP ID,即为用于第二基站确定第二UE的标识信息。
804.eNB1根据上一步收到的eNB2标识,向eNB2发出路径建立请求,其中携带eNB1用于邻近通信的IP地址和TEID,以及eNB1为与eNB2之间的直接路径分配的标识eNB1X2路径(Path)ID。eNB1将Container包含在消息中发送给eNB2.
805.eNB2收到路径建立请求消息后,解析其中的Container,根据eNB2UE S1AP ID可知需要为UE2建立直接路径。eNB2与UE2进行RRC重配。
806.eNB2分配用于直接路径标识的eNB2X2Path ID。eNB2向eNB1返回路径建立响应消息,其中包括eNB2用于邻近通信的IP地址和TEID,以及直接路径标识eNB2X2Path ID。
807.eNB1与UE1进行RRC重配。
808.eNB1向MME返回路径建立触发响应消息。
实施例五:
当eNB1和eNB2所属的核心网设备不同时,参见图9,路径建立过程包括步骤:
901.MME根据配置或者非UE相关的信令获知基站的直接接口信息。
902.UE1和UE2进行邻近发现过程。
903.UE1向MME1发出邻近通信建立请求消息,其中携带UE1和UE2的标识。MME1根据UE2的标识获知其所属的MME2.具体过程见下面的实施例六。
904.MME1向eNB1发送路径请求消息。
905.eNB1向MME1返回路径响应,其中包含eNB1用于直接通信的IP地址和端口号信息。
906.MME1向MME2发送直接路径隧道建立请求,其中包含eNB1用于直接通信的IP地址和端口号信息。
907.MME2向eNB2发送直接路径隧道建立请求,其中包含eNB1用于直接通信的IP地址和端口号信息。
908.eNB2与UE2进行RRC重配,建立直接通信相关的空口承载。
909.eNB2向MME2返回直接路径隧道建立响应,其中包含eNB2用于直接通信的IP地址和端口号信息。
910.MME2向MME1返回直接路径隧道建立响应,其中包含eNB2用于直接通信的IP地址和端口号信息。
911.MME1向eNB1发送直接路径隧道建立请求,其中包含eNB2用于直接通信的IP地址和端口号信息。
912.eNB1与UE1进行RRC重配,建立直接通信相关的空口承载。
913.eNB1向MME1返回直接路径隧道建立响应。
通过上述过程,UE1、eNB1、eNB2和UE2之间的直接通信路径建立完毕。
实施例六:
当UE1和UE2所属的核心网设备不同时,UE1的核心网设备获知UE2所属的核心网设备的方法参见图10,包括:
1001.UE1向MME1发送邻近通信请求消息,其中包含UE1和UE2的标识。UE2的标识为UE2的ProSe ID(邻近通信标识)。
1002.MME1向网络中的ProSe Function发送标识请求,其中携带UE2的ProSe ID。
1003.ProSe Function从标识映射可知UE2的永久标识。
1004.ProSe Function通过UE2的永久标识,向HSS查询UE2当前注册的MME,获得MME2的标识。
1005.ProSe Function向MME1返回标识响应消息,其中携带MME2标识。
综上,参见图11,在核心网设备侧,本发明实施例提供的一种路径建立方法包括步骤:
S101、核心网设备确定第一UE驻留的第一基站和第二UE驻留的第二基站可以建立通信链路;
S102、核心网设备发起建立第一UE和第二UE之间的经由第一基站和第二基站的直接通信路径。
相应地,参见图12,在接入网侧,本发明实施例提供的一种路径建立方法包括步骤:
S201、第二UE驻留的第二基站接收核心网设备发送的路径建立请求消息,其中携带第一UE驻留的第一基站用于直接通信的IP地址和隧道端口号;
S202、第二基站与第二UE进行RRC重配过程,建立第二基站与第二UE之间用于直接通信的无线承载;
S203、第二基站向核心网设备返回路径建立响应消息,其中包含第二基站用于直接通信的IP地址和隧道端口号;
S204、第一基站接收核心网设备发送的路径建立请求消息,其中携带第二基站用于直接通信的IP地址和隧道端口号;
S205、第一基站与第一UE进行RRC重配过程,建立第一基站与第一UE之间用于直接通信的无线承载;
S206、第一基站向核心网设备返回路径建立响应消息,其中包含第一基站自身用于直接通信的IP地址和端口号。
相应地,参见图13,在接入网侧,本发明实施例提供的另一种路径建立方法包括步骤:
S301、第一UE驻留的第一基站接收核心网设备发送的路径建立触发命令,其中携带第二基站标识,以及用于第二基站确定UE的标识信息;
S302、第一基站向第二UE驻留的第二基站发送路径建立请求消息,其中携带第一基站用于直接通信用户面的IP地址和隧道端口号、第一基站控制面标识,以及用于第二基站确定UE的标识信息;
S303、第二基站根据第一基站发送的路径建立请求消息,获知要对第二UE建立直接通信路径,第二基站与第二UE进行RRC重配过程,建立第二基站与第二UE之间用于直接通信的无线承载;
S304、第二基站向第一基站返回路径建立响应消息,其中包含第二基站用于直接通信的IP地址和隧道端口号,以及第二基站控制面标识;
S305、第一基站与第一UE进行RRC重配,并且第一基站向核心网设备返回路径建立触发响应消息。
参见图14,本发明实施例提供的一种核心网设备包括:
确定单元11,用于确定第一UE驻留的第一基站和第二UE驻留的第二基站可以建立通信链路;
发起单元12,用于发起建立第一UE和第二UE之间的经由第一基站和第二基站的直接通信路径。
较佳地,所述确定单元11采用下列方式之一确定第一UE驻留的第一基站和第二UE驻留的第二基站可以建立通信链路:
方式一:根据预先配置的第一基站和第二基站之间具有直接接口的信息,确定第一基站与第二基站之间可以建立通信链路;
方式二:在建立与第一基站之间的非用户设备UE相关连接时,获取该第一基站上报的 与该第一基站有直接接口的第二基站的信息,从而确定第一基站与第二基站之间可以建立通信链路;或者,在建立与第二基站之间的非UE相关连接时,获取该第二基站上报的与该第二基站有直接接口的第一基站的信息,从而确定第一基站与第二基站之间可以建立通信链路;
方式三:通过UE相关信令向第一基站发送该第一基站与第二基站之间是否可以建立通信链路的询问消息,其中携带第二基站标识,当接收到第一基站返回的接受消息时,确定第一基站与第二基站之间可以建立通信链路;或者,通过UE相关信令向第二基站发送该第二基站与第一基站之间是否可以建立通信链路的询问消息,其中携带第一基站标识,当接收到第二基站返回的接受消息时,确定第二基站与第一基站之间可以建立通信链路。
较佳地,所述发起单元12,具体用于:
在UE的直接通信请求消息触发下,发起建立第一UE和第二UE之间的经由第一基站和第二基站的直接通信路径。
从而核心网设备可以在UE的直接通信请求消息触发下,发起建立经由两个基站的直接通信路径。
或者,所述发起单元12,具体用于:
获取第一基站用于直接通信的IP地址和隧道端口号;
向第二基站发送路径建立请求消息,其中携带第一基站用于直接通信的IP地址和隧道端口号;接收第二基站返回的路径建立响应消息,其中包含第二基站用于直接通信的IP地址和隧道端口号;
向第一基站发送路径建立请求消息,其中携带第二基站用于直接通信的IP地址和隧道端口号;所述第一基站收到所述路径建立触发命令后,向所述第二基站发送路径建立请求消息,其中携带所述第一基站用于直接通信的用户面的IP地址和隧道端口号、第一基站控制面标识,以及所述用于所述第二基站确定UE的标识信息;所述第二基站根据所述第一基站发送的路径建立请求消息中的UE的标识信息,获知要对所述第二UE建立直接通信路径,所述第二基站与所述第二UE进行无线资源控制RRC重配过程,建立所述第二基站与所述第二UE之间用于直接通信的无线承载;接收第一基站返回的路径建立响应消息。
从而核心网设备基于内部判断,基于核心网发起建立经由两个基站的直接通信路径。
较佳地,所述发起单元向第一基站发送直接路径隧道信息请求消息,并接收第一基站返回的第一基站用于直接通信的IP地址和隧道端口号;或者,所述发起单元向第一基站发送询问消息,并从第一基站返回的接受消息中获得第一基站用于直接通信的IP地址和隧道端口号。
或者,所述发起单元12,具体用于:
向第一基站发送路径建立触发命令,其中携带第二基站标识以及用于第二基站确定UE的标识信息;
接收第一基站返回的路径建立触发响应消息。
从而核心网设备可以基于内部判断,基于基站发起建立经由两个基站的直接通信路径。
参见图15,本发明实施例提供的另一种核心网设备包括:存储器230和处理器240。
其中,处理器240被配置了用于执行上述核心网设备侧的方法的计算机程序等,从而实现本发明实施例中所述的核心网设备侧的功能;存储器230,用于存储该计算机程序的代码,可以被用于配置所述处理器240;处理器240根据实际需要可以包括基带处理部件、射频处 理部件等设备,可以实现数据的收发功能。下面给出存储器230和处理器240的具体的功能介绍。
处理器240,用于确定第一UE驻留的第一基站和第二UE驻留的第二基站可以建立通信链路;
处理器240,用于发起建立第一UE和第二UE之间的经由第一基站和第二基站的直接通信路径。
较佳地,所述处理器240采用下列方式之一确定第一UE驻留的第一基站和第二UE驻留的第二基站可以建立通信链路:
方式一:根据预先配置的第一基站和第二基站之间具有直接接口的信息,确定第一基站与第二基站之间可以建立通信链路;
方式二:在建立与第一基站之间的非用户设备UE相关连接时,获取该第一基站上报的与该第一基站有直接接口的第二基站的信息,从而确定第一基站与第二基站之间可以建立通信链路;或者,在建立与第二基站之间的非UE相关连接时,获取该第二基站上报的与该第二基站有直接接口的第一基站的信息,从而确定第一基站与第二基站之间可以建立通信链路;
方式三:通过UE相关信令向第一基站发送该第一基站与第二基站之间是否可以建立通信链路的询问消息,其中携带第二基站标识,当接收到第一基站返回的接受消息时,确定第一基站与第二基站之间可以建立通信链路;或者,通过UE相关信令向第二基站发送该第二基站与第一基站之间是否可以建立通信链路的询问消息,其中携带第一基站标识,当接收到第二基站返回的接受消息时,确定第二基站与第一基站之间可以建立通信链路。
较佳地,所述处理器240,具体用于:
在UE的直接通信请求消息触发下,发起建立第一UE和第二UE之间的经由第一基站和第二基站的直接通信路径。
从而核心网设备可以在UE的直接通信请求消息触发下,发起建立经由两个基站的直接通信路径。
或者,所述处理器240,具体用于:
获取第一基站用于直接通信的IP地址和隧道端口号;
向第二基站发送路径建立请求消息,其中携带第一基站用于直接通信的IP地址和隧道端口号;接收第二基站返回的路径建立响应消息,其中包含第二基站用于直接通信的IP地址和隧道端口号;
向第一基站发送路径建立请求消息,其中携带第二基站用于直接通信的IP地址和隧道端口号;接收第一基站返回的路径建立响应消息。
从而核心网设备基于内部判断,基于核心网发起建立经由两个基站的直接通信路径。
较佳地,所述发起单元向第一基站发送直接路径隧道信息请求消息,并接收第一基站返回的第一基站用于直接通信的IP地址和隧道端口号;或者,所述发起单元向第一基站发送询问消息,并从第一基站返回的接受消息中获得第一基站用于直接通信的IP地址和隧道端口号。
或者,所述处理器240,具体用于:
向第一基站发送路径建立触发命令,其中携带第二基站标识以及用于第二基站确定UE的标识信息;
接收第一基站返回的路径建立触发响应消息。
从而核心网设备可以基于内部判断,基于基站发起建立经由两个基站的直接通信路径。
本发明实施例提供的一种路径建立系统,包括:第一UE驻留的第一基站和第二UE驻留的第二基站,其中,
第二基站用于:
接收核心网设备发送的路径建立请求消息,其中携带第一UE驻留的第一基站用于直接通信的IP地址和隧道端口号;
与第二UE进行RRC重配过程,建立第二基站与第二UE之间用于直接通信的无线承载;
向核心网设备返回路径建立响应消息,其中包含第二基站用于直接通信的IP地址和隧道端口号;
第一基站用于:
接收核心网设备发送的路径建立请求消息,其中携带第二基站用于直接通信的IP地址和隧道端口号;
与第一UE进行RRC重配过程,建立第一基站与第一UE之间用于直接通信的无线承载;
向核心网设备返回路径建立响应消息,其中包含第一基站自身用于直接通信的IP地址和端口号。
从而在基站侧,实现了核心网设备基于核心网发起建立经由两个基站的直接通信路径。
较佳地,所述第一基站还用于:
接收核心网设备发送的直接路径隧道信息请求消息,并返回第一基站用于直接通信的IP地址和隧道端口号给核心网设备;或者,接收核心网设备发送的询问消息,并返回接受消息,其中携带第一基站用于直接通信的IP地址和隧道端口号。
较佳地,第一基站和/或第二基站还用于:在建立与核心网设备之间的非UE相关连接时,向核心网设备上报与自身有直接接口的基站的信息。
从而使核心网可以确定通信双方UE各自所在的基站可以建立通信链路。
较佳地,第一基站还用于:
接收核心网设备发送的该第一基站与第二基站之间是否可以建立通信链路的询问消息,其中携带第二基站标识;
当根据第二基站标识确定第一基站与该第二基站之间可以建立通信链路时,向核心网设备返回接受消息。较佳地,该接受消息中还包括第一基站用于直接通信的IP地址和隧道端口号。
从而使核心网可以确定通信双方UE各自所在的基站可以建立通信链路。
本发明实施例通过的一种路径建立系统,包括:第一UE驻留的第一基站和第二UE驻留的第二基站,其中,
第一基站用于:
接收核心网设备发送的路径建立触发命令,其中携带第二基站标识,以及用于第二基站确定UE的标识信息;
向第二UE驻留的第二基站发送路径建立请求消息,其中携带第一基站用于直接通信用户面的IP地址和隧道端口号、第一基站控制面标识,以及用于第二基站确定UE的标识信息;
第二基站用于:
根据第一基站发送的路径建立请求消息,获知要对第二UE建立直接通信路径;与第二UE进行RRC重配过程,建立第二基站与第二UE之间用于直接通信的无线承载;
向第一基站返回路径建立响应消息,其中包含第二基站用于直接通信的IP地址和隧道端口号,以及第二基站控制面标识;
第一基站还用于:与第一UE进行RRC重配,并且向核心网设备返回路径建立触发响应消息。
从而在基站侧,实现了核心网设备基于基站发起建立经由两个基站的直接通信路径。
较佳地,第一基站还用于:接收核心网设备发送的直接路径隧道信息请求消息,并返回第一基站用于直接通信的IP地址和隧道端口号给核心网设备;或者,接收核心网设备发送的询问消息,并返回接受消息,其中携带第一基站用于直接通信的IP地址和隧道端口号。
较佳地,第一基站还用于:当根据第二基站标识确定第一基站与该第二基站之间可以建立通信链路时,向核心网设备返回接受消息。较佳地,该接受消息中还包括第一基站用于直接通信的IP地址和隧道端口号。
较佳地,第一基站和/或第二基站还用于:在建立与核心网设备之间的非UE相关连接时,向核心网设备上报与自身有直接接口的基站的信息。
从而使核心网可以确定通信双方UE各自所在的基站可以建立通信链路。
较佳地,第一基站还用于:
接收核心网设备发送的该第一基站与第二基站之间是否可以建立通信链路的询问消息,其中携带第二基站标识;
当根据第二基站标识确定第一基站与该第二基站之间可以建立通信链路时,向核心网设备返回接受消息。
参见图16、本发明实施例提供的一种路径建立设备,例如可以是基站,包括:
第一单元161,用于接收核心网设备发送的路径建立请求消息,其中携带第一UE驻留的第一基站用于直接通信的IP地址和隧道端口号;
第二单元162,用于与第二UE进行RRC重配过程,建立在所述设备与第二UE之间用于直接通信的无线承载;
第三单元163,用于向核心网设备返回路径建立响应消息,其中包含第二基站用于直接通信的IP地址和隧道端口号。
较佳地,所述第三单元163还用于:
在建立与核心网设备之间的非UE相关连接时,向核心网设备上报与自身有直接接口的基站的信息。
较佳地,所述第一单元161还用于:接收核心网设备发送的该第一基站与第二基站之间是否可以建立通信链路的询问消息,其中携带第二基站标识;
所述第三单元163还用于:当根据第二基站标识确定第一基站与该第二基站之间可以建立通信链路时,向核心网设备返回接受消息。
本发明实施例提供的另一种路径建立设备,例如可以是基站,也具有图16所示的结构,具体包括:
第一单元161,用于接收核心网设备发送的路径建立触发命令,其中携带第二UE驻留的第二基站标识,以及用于第二基站确定UE的标识信息;
第三单元163,用于向第二基站发送路径建立请求消息,其中携带第一基站用于直接通信的用户面的IP地址和隧道端口号、第一基站控制面标识,以及用于第二基站确定UE的标识信息;
第二单元162,用于与第一UE进行RRC重配,并且向核心网设备返回路径建立触发响应消息。
较佳地,所述第三单元163还用于:
在建立与核心网设备之间的非UE相关连接时,向核心网设备上报与自身有直接接口的基站的信息。
较佳地,所述第一单元161还用于:接收核心网设备发送的该第一基站与第二基站之间是否可以建立通信链路的询问消息,其中携带第二基站标识;
所述第三单元163还用于:当根据第二基站标识确定第一基站与该第二基站之间可以建立通信链路时,向核心网设备返回接受消息。
较佳地,第二单元162还用于:根据第一UE驻留的第一基站发送的路径建立请求消息,获知要对第二UE建立直接通信路径,与第二UE进行RRC重配过程,建立第二基站与第二UE之间用于直接通信的无线承载;
第三单元163还用于:向第一基站返回路径建立响应消息,其中包含第二基站用于直接通信的IP地址和隧道端口号,以及第二基站控制面标识。
另外,本发明实施例提供的第三种路径建立设备,例如可以是基站,可以不包括上述第一单元,具体包括:
第二单元162,用于根据第一UE驻留的第一基站发送的路径建立请求消息,获知要对第二UE建立直接通信路径,与第二UE进行RRC重配过程,建立第二基站与第二UE之间用于直接通信的无线承载;
第三单元163,用于向第一基站返回路径建立响应消息,其中包含第二基站用于直接通信的IP地址和隧道端口号,以及第二基站控制面标识。
较佳地,所述第三单元163还用于:
在建立与核心网设备之间的非UE相关连接时,向核心网设备上报与自身有直接接口的基站的信息。
上述第一单元161、第二单元162、第三单元163的功能,均可以由处理器实现。
针对上述方法流程,本发明实施例还提供一种核心网设备、一种基站以及系统,该核心网设备、基站以及系统的具体内容可以参照上述方法实施,在此不再赘述。
如图17所示,本发明实施例提供的一种核心网设备结构图,包括:处理器1701、存储器1702;
所述存储器1702,用于存储一个或多个可执行程序,被用于配置所述处理器1701;
所述处理器1701,被配置了一个或多个可执行程序,所述一个或多个可执行程序用于执行以下方法:用于确定第一用户设备UE驻留的第一基站和第二UE驻留的第二基站可以建立通信链路;用于发起建立所述第一UE和所述第二UE之间的经由所述第一基站和所述第 二基站的直接通信路径。
较佳的,所述处理器1701采用下列方式之一确定所述第一UE驻留的所述第一基站和所述第二UE驻留的所述第二基站可以建立通信链路:
方式一:根据预先配置的所述第一基站和所述第二基站之间具有直接接口的信息,确定所述第一基站与所述第二基站之间可以建立通信链路;
方式二:在建立与所述第一基站之间的非用户设备UE相关连接时,获取所述第一基站上报的与所述第一基站有直接接口的第二基站的信息,根据获取到的信息确定所述第一基站与所述第二基站之间可以建立通信链路;或者,在建立与所述第二基站之间的非UE相关连接时,获取所述第二基站上报的与所述第二基站有直接接口的第一基站的信息,根据获取到的信息确定所述第一基站与所述第二基站之间可以建立通信链路;
方式三:通过UE相关信令向所述第一基站发送所述第一基站与所述第二基站之间是否可以建立通信链路的询问消息,其中携带第二基站标识,当接收到所述第一基站返回的接受消息时,确定所述第一基站与所述第二基站之间可以建立通信链路;或者,通过UE相关信令向所述第二基站发送所述第二基站与所述第一基站之间是否可以建立通信链路的询问消息,其中携带第一基站标识,当接收到所述第二基站返回的接受消息时,确定所述第二基站与所述第一基站之间可以建立通信链路。
较佳的,所述处理器1701具体用于:
在UE的直接通信请求消息触发下,发起建立所述第一UE和所述第二UE之间的经由所述第一基站和所述第二基站的直接通信路径。
较佳的,所述处理器1701具体用于:
获取所述第一基站用于直接通信的IP地址和隧道端口号;
向所述第二基站发送路径建立请求消息,其中携带所述第一基站用于直接通信的IP地址和隧道端口号;接收所述第二基站返回的路径建立响应消息,其中包含所述第二基站用于直接通信的IP地址和隧道端口号;
向所述第一基站发送路径建立请求消息,其中携带所述第二基站用于直接通信的IP地址和隧道端口号;接收所述第一基站返回的路径建立响应消息。
较佳的,所述处理器1701向所述第一基站发送直接路径隧道信息请求消息,并接收所述第一基站返回的所述第一基站用于直接通信的IP地址和隧道端口号;或者,所述发起单元向所述第一基站发送询问消息,并从所述第一基站返回的接受消息中获得所述第一基站用于直接通信的IP地址和隧道端口号。
较佳的,所述处理器1701具体用于:
向所述第一基站发送路径建立触发命令,其中携带第二基站标识以及用于所述第二基站确定UE的标识信息;
所述第一基站收到所述路径建立触发命令后,向所述第二基站发送路径建立请求消息,其中携带所述第一基站用于直接通信的用户面的IP地址和隧道端口号、第一基站控制面标识,以及所述用于所述第二基站确定UE的标识信息;
所述第二基站根据所述第一基站发送的路径建立请求消息中的UE的标识信息,获知要对所述第二UE建立直接通信路径,所述第二基站与所述第二UE进行无线资源控制RRC重 配过程,建立所述第二基站与所述第二UE之间用于直接通信的无线承载;
接收所述第一基站返回的路径建立触发响应消息。
其中,在图17中,总线架构可以包括任意数量的互联的总线和桥,具体由处理器1701代表的一个或多个处理器和存储器1702代表的存储器的各种电路链接在一起。总线架构还可以将诸如外围设备、稳压器和功率管理电路等之类的各种其他电路链接在一起,这些都是本领域所公知的,因此,本文不再对其进行进一步描述。总线接口提供接口。
如图18所示,本发明实施例提供的一种基站结构图,包括:处理器1801、存储器1802、收发机1803;
所述存储器1802,用于存储一个或多个可执行程序,被用于配置所述处理器1801;
所述收发机1803,用于在所述处理器1801的控制下接收和发送数据;
所述处理器1801,被配置了一个或多个可执行程序,所述一个或多个可执行程序用于执行以下方法:用于接收核心网设备发送的路径建立请求消息,其中携带第一用户设备UE驻留的第一基站用于直接通信的IP地址和隧道端口号;或者,携带第二UE驻留的第二基站用于直接通信的IP地址和隧道端口号;
用于与第二UE进行无线资源控制RRC重配过程,建立在所述设备与所述第二UE之间用于直接通信的无线承载;或者,与所述第一UE进行无线资源控制RRC重配过程,建立所述第一基站与所述第一UE之间用于直接通信的无线承载;
用于向所述核心网设备返回路径建立响应消息,其中包含第二基站用于直接通信的IP地址和隧道端口号;或者,包含第一基站用于直接通信的IP地址和端口号。
较佳的,所述处理器1801还用于:
在建立与所述核心网设备之间的非UE相关连接时,向所述核心网设备上报与自身有直接接口的基站的信息。
较佳的,所述处理器1801还用于:
接收所述核心网设备发送的所述第一基站与所述第二基站之间是否可以建立通信链路的询问消息,其中携带第二基站标识;
当根据所述第二基站标识确定所述第一基站与所述第二基站之间可以建立通信链路时,向所述核心网设备返回接受消息。
其中,在图18中,总线架构可以包括任意数量的互联的总线和桥,具体由处理器1801代表的一个或多个处理器和存储器1802代表的存储器的各种电路链接在一起。总线架构还可以将诸如外围设备、稳压器和功率管理电路等之类的各种其他电路链接在一起,这些都是本领域所公知的,因此,本文不再对其进行进一步描述。总线接口提供接口。收发机1803可以是多个元件,即包括发送机和收发机,提供用于在传输介质上与各种其他装置通信的单元。处理器1801负责管理总线架构和通常的处理,存储器1802可以存储处理器1801在执行操作时所使用的数据。
如图19所示,本发明实施例提供的一种基站结构图,包括:处理器1901、存储器1902、收发机1903;
所述存储器1902,用于存储一个或多个可执行程序,被用于配置所述处理器1901;
所述收发机1903,用于在所述处理器1901的控制下接收和发送数据;
所述处理器1901,被配置了一个或多个可执行程序,所述一个或多个可执行程序用于执行以下方法:用于接收核心网设备发送的路径建立触发命令,其中携带第二用户设备UE驻留的第二基站标识,以及用于第二基站确定UE的标识信息;用于向所述第二基站发送路径建立请求消息,其中携带第一基站用于直接通信的用户面的IP地址和隧道端口号、第一基站控制面标识,以及用于所述第二基站确定UE的标识信息;用于与所述第一UE进行无线资源控制RRC重配,并且向所述核心网设备返回路径建立触发响应消息;
用于根据第一用户设备UE驻留的第一基站发送的路径建立请求消息,获知要对第二UE建立直接通信路径,与所述第二UE进行无线资源控制RRC重配过程,建立第二基站与所述第二UE之间用于直接通信的无线承载;用于向所述第一基站返回路径建立响应消息,其中包含所述第二基站用于直接通信的IP地址和隧道端口号,以及第二基站控制面标识。
较佳的,所述处理器1901还用于:
在建立与所述核心网设备之间的非UE相关连接时,向所述核心网设备上报与自身有直接接口的基站的信息。
较佳的,所述处理器1901还用于:
接收所述核心网设备发送的所述第一基站与所述第二基站之间是否可以建立通信链路的询问消息,其中携带第二基站标识;
当根据所述第二基站标识确定所述第一基站与所述第二基站之间可以建立通信链路时,向所述核心网设备返回接受消息。
较佳的,所述处理器1901还用于:
根据所述第一UE驻留的所述第一基站发送的路径建立请求消息,获知要对所述第二UE建立直接通信路径,与所述第二UE进行RRC重配过程,建立所述第二基站与所述第二UE之间用于直接通信的无线承载;
向所述第一基站返回路径建立响应消息,其中包含所述第二基站用于直接通信的IP地址和隧道端口号,以及第二基站控制面标识。
其中,在图19中,总线架构可以包括任意数量的互联的总线和桥,具体由处理器1901代表的一个或多个处理器和存储器1902代表的存储器的各种电路链接在一起。总线架构还可以将诸如外围设备、稳压器和功率管理电路等之类的各种其他电路链接在一起,这些都是本领域所公知的,因此,本文不再对其进行进一步描述。总线接口提供接口。收发机1903可以是多个元件,即包括发送机和收发机,提供用于在传输介质上与各种其他装置通信的单元。处理器1901负责管理总线架构和通常的处理,存储器1902可以存储处理器1901在执行操作时所使用的数据。
如图20所示,本发明实施例提供了一种路径建立系统,该系统包括:核心网设备2001和基站2002,其中,
所述核心网设备2001用于:
确定第一用户设备UE驻留的第一基站和第二UE驻留的第二基站可以建立通信链路;用于发起建立所述第一UE和所述第二UE之间的经由所述第一基站和所述第二基站的直接 通信路径;
所述基站2002用于:
接收核心网设备发送的路径建立请求消息,其中携带第一用户设备UE驻留的第一基站用于直接通信的IP地址和隧道端口号;或者,携带第二UE驻留的第二基站用于直接通信的IP地址和隧道端口号;
用于与第二UE进行无线资源控制RRC重配过程,建立在所述设备与所述第二UE之间用于直接通信的无线承载;或者,与所述第一UE进行无线资源控制RRC重配过程,建立所述第一基站与所述第一UE之间用于直接通信的无线承载;
用于向所述核心网设备返回路径建立响应消息,其中包含第二基站用于直接通信的IP地址和隧道端口号;或者,包含第一基站用于直接通信的IP地址和端口号。
如图21所示,本发明实施例提供了一种路径建立系统,该系统包括:核心网设备2101和基站2102,其中,
所述核心网设备2101用于:
确定第一用户设备UE驻留的第一基站和第二UE驻留的第二基站可以建立通信链路;用于发起建立所述第一UE和所述第二UE之间的经由所述第一基站和所述第二基站的直接通信路径;
所述基站2102用于:
接收核心网设备发送的路径建立触发命令,其中携带第二用户设备UE驻留的第二基站标识,以及用于第二基站确定UE的标识信息;用于向所述第二基站发送路径建立请求消息,其中携带第一基站用于直接通信的用户面的IP地址和隧道端口号、第一基站控制面标识,以及用于所述第二基站确定UE的标识信息;用于与所述第一UE进行无线资源控制RRC重配,并且向所述核心网设备返回路径建立触发响应消息;
用于根据第一用户设备UE驻留的第一基站发送的路径建立请求消息,获知要对第二UE建立直接通信路径,与所述第二UE进行无线资源控制RRC重配过程,建立第二基站与所述第二UE之间用于直接通信的无线承载;用于向所述第一基站返回路径建立响应消息,其中包含所述第二基站用于直接通信的IP地址和隧道端口号,以及第二基站控制面标识。
本领域内的技术人员应明白,本发明的实施例可提供为方法、系统、或计算机程序产品。因此,本发明可采用完全硬件实施例、完全软件实施例、或结合软件和硬件方面的实施例的形式。而且,本发明可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器和光学存储器等)上实施的计算机程序产品的形式。
本发明是参照根据本发明实施例的方法、设备(系统)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器,使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中,使得存储在该计算机可读存储器中的指令产生包括指令装置的制 造品,该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上,使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理,从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。
显然,本领域的技术人员可以对本发明进行各种改动和变型而不脱离本发明的精神和范围。这样,倘若本发明的这些修改和变型属于本发明权利要求及其等同技术的范围之内,则本发明也意图包含这些改动和变型在内。

Claims (54)

  1. 一种路径建立方法,其特征在于,该方法包括:
    核心网设备确定第一用户设备UE驻留的第一基站和第二UE驻留的第二基站可以建立通信链路;
    所述核心网设备发起建立所述第一UE和所述第二UE之间的经由所述第一基站和所述第二基站的直接通信路径。
  2. 根据权利要求1所述的方法,其特征在于,所述核心网设备确定第一UE驻留的第一基站和第二UE驻留的第二基站可以建立通信链路,包括下列方式之一:
    方式一:所述核心网设备根据预先配置的所述第一基站和所述第二基站之间具有直接接口的信息,确定所述第一基站与所述第二基站之间可以建立通信链路;
    方式二:所述核心网设备在建立与所述第一基站之间的非UE相关连接时,获取所述第一基站上报的与所述第一基站有直接接口的第二基站的信息,根据获取到的信息确定所述第一基站与所述第二基站之间可以建立通信链路;或者,所述核心网设备在建立与所述第二基站之间的非UE相关连接时,获取所述第二基站上报的与所述第二基站有直接接口的第一基站的信息,根据获取到的信息确定所述第一基站与所述第二基站之间可以建立通信链路;
    方式三:所述核心网设备通过UE相关信令向所述第一基站发送所述第一基站与所述第二基站之间是否可以建立通信链路的询问消息,其中携带第二基站标识,当接收到所述第一基站返回的接受消息时,所述核心网设备确定所述第一基站与所述第二基站之间可以建立通信链路;或者,所述核心网设备通过UE相关信令向所述第二基站发送所述第二基站与所述第一基站之间是否可以建立通信链路的询问消息,其中携带第一基站标识,当接收到所述第二基站返回的接受消息时,所述核心网设备确定所述第二基站与所述第一基站之间可以建立通信链路。
  3. 根据权利要求1所述的方法,其特征在于,所述核心网设备发起建立第一UE和第二UE之间的经由第一基站和第二基站的直接通信路径,包括:
    所述核心网设备在UE的直接通信请求消息触发下,发起建立所述第一UE和所述第二UE之间的经由所述第一基站和所述第二基站的直接通信路径。
  4. 根据权利要求1所述的方法,其特征在于,所述核心网设备发起建立所述第一UE和所述第二UE之间的经由所述第一基站和所述第二基站的直接通信路径,包括:
    所述核心网设备获取所述第一基站用于直接通信的IP地址和隧道端口号;
    所述核心网设备向所述第二基站发送路径建立请求消息,其中携带所述第一基站用于直接通信的IP地址和隧道端口号;所述核心网设备接收所述第二基站返回的路径建立响应消息,其中包含所述第二基站用于直接通信的IP地址和隧道端口号;
    所述核心网设备向所述第一基站发送路径建立请求消息,其中携带所述第二基站用于直接通信的IP地址和隧道端口号,所述核心网设备接收所述第一基站返回的路径建立响应消息。
  5. 根据权利要求4所述的方法,其特征在于,所述核心网设备获取所述第一基站用于直接通信的IP地址和隧道端口号,包括:
    所述核心网设备向所述第一基站发送直接路径隧道信息请求消息,并接收所述第一基站 返回的所述第一基站用于直接通信的IP地址和隧道端口号;或者,所述核心网设备向所述第一基站发送询问消息,并从所述第一基站返回的接受消息中获得所述第一基站用于直接通信的IP地址和隧道端口号。
  6. 根据权利要求1所述的方法,其特征在于,所述核心网设备发起建立所述第一UE和所述第二UE之间的经由所述第一基站和所述第二基站的直接通信路径,包括:
    所述核心网设备向所述第一基站发送路径建立触发命令,其中携带第二基站标识以及用于所述第二基站确定UE的标识信息;
    所述第一基站收到所述核心网设备发送的路径建立触发命令后,向所述第二基站发送路径建立请求消息,其中携带所述第一基站用于直接通信的用户面的IP地址和隧道端口号、第一基站控制面标识,以及所述用于所述第二基站确定UE的标识信息;
    所述第二基站根据所述第一基站发送的路径建立请求消息中的UE的标识信息,获知要对所述第二UE建立直接通信路径,所述第二基站与所述第二UE进行无线资源控制RRC重配过程,建立所述第二基站与所述第二UE之间用于直接通信的无线承载;
    所述第二基站向所述第一基站返回路径建立响应消息,其中包含所述第二基站用于直接通信的IP地址和隧道端口号,以及第二基站控制面标识;
    所述核心网设备接收所述第一基站返回的路径建立触发响应消息。
  7. 一种路径建立方法,其特征在于,该方法包括:
    第二用户设备UE驻留的第二基站接收核心网设备发送的路径建立请求消息,其中携带第一UE驻留的第一基站用于直接通信的IP地址和隧道端口号;
    所述第二基站与所述第二UE进行无线资源控制RRC重配过程,建立所述第二基站与所述第二UE之间用于直接通信的无线承载;
    所述第二基站向所述核心网设备返回路径建立响应消息,其中包含所述第二基站用于直接通信的IP地址和隧道端口号。
  8. 根据权利要求7所述的方法,其特征在于,该方法还包括:
    所述第二基站在建立与所述核心网设备之间的非UE相关连接时,向所述核心网设备上报与自身有直接接口的基站的信息。
  9. 一种路径建立方法,其特征在于,该方法包括:
    第一用户设备UE驻留的第一基站接收核心网设备发送的路径建立请求消息,其中携带第二UE驻留的第二基站用于直接通信的IP地址和隧道端口号;
    所述第一基站与所述第一UE进行无线资源控制RRC重配过程,建立所述第一基站与所述第一UE之间用于直接通信的无线承载;
    所述第一基站向所述核心网设备返回路径建立响应消息。
  10. 根据权利要求9所述的方法,其特征在于,该方法还包括:
    所述第一基站在建立与所述核心网设备之间的非UE相关连接时,向所述核心网设备上报与自身有直接接口的基站的信息。
  11. 根据权利要求9所述的方法,其特征在于,该方法还包括:
    所述第一基站接收所述核心网设备发送的所述第一基站与所述第二基站之间是否可以建立通信链路的询问消息,其中携带第二基站标识;
    当所述第一基站根据所述第二基站标识确定所述第一基站与所述第二基站之间可以建立通信链路时,向所述核心网设备返回接受消息。
  12. 一种路径建立方法,其特征在于,该方法包括:
    第一用户设备UE驻留的第一基站接收核心网设备发送的路径建立触发命令,其中携带第二基站标识,以及用于第二基站确定UE的标识信息;
    所述第一基站向所述第二UE驻留的所述第二基站发送路径建立请求消息,其中携带所述第一基站用于直接通信用户面的IP地址和隧道端口号、第一基站控制面标识,以及用于所述第二基站确定UE的标识信息;
    所述第一基站与所述第一UE进行无线资源控制RRC重配,并且所述第一基站向所述核心网设备返回路径建立触发响应消息。
  13. 根据权利要求12所述的方法,其特征在于,该方法还包括:
    所述第一基站在建立与所述核心网设备之间的非UE相关连接时,向所述核心网设备上报与自身有直接接口的基站的信息。
  14. 根据权利要求12所述的方法,其特征在于,该方法还包括:
    所述第一基站接收所述核心网设备发送的所述第一基站与所述第二基站之间是否可以建立通信链路的询问消息,其中携带第二基站标识;
    当所述第一基站根据所述第二基站标识确定所述第一基站与所述第二基站之间可以建立通信链路时,向所述核心网设备返回接受消息。
  15. 一种路径建立方法,其特征在于,该方法包括:
    第二用户设备UE驻留的第二基站根据第一UE驻留的第一基站发送的路径建立请求消息,获知要对所述第二UE建立直接通信路径,所述第二基站与所述第二UE进行无线资源控制RRC重配过程,建立所述第二基站与第二UE之间用于直接通信的无线承载;
    所述第二基站向所述第一基站返回路径建立响应消息,其中包含所述第二基站用于直接通信的IP地址和隧道端口号,以及第二基站控制面标识。
  16. 根据权利要求15所述的方法,其特征在于,该方法还包括:
    所述第二基站在建立与所述核心网设备之间的非UE相关连接时,向所述核心网设备上报与自身有直接接口的基站的信息。
  17. 一种核心网设备,其特征在于,该设备包括:
    确定单元,用于确定第一用户设备UE驻留的第一基站和第二UE驻留的第二基站可以建立通信链路;
    发起单元,用于发起建立所述第一UE和所述第二UE之间的经由所述第一基站和所述第二基站的直接通信路径。
  18. 根据权利要求17所述的设备,其特征在于,所述确定单元采用下列方式之一确定所述第一UE驻留的所述第一基站和所述第二UE驻留的所述第二基站可以建立通信链路:
    方式一:根据预先配置的所述第一基站和所述第二基站之间具有直接接口的信息,确定所述第一基站与所述第二基站之间可以建立通信链路;
    方式二:在建立与所述第一基站之间的非用户设备UE相关连接时,获取所述第一基站上报的与所述第一基站有直接接口的第二基站的信息,根据获取到的信息确定所述第一基站 与所述第二基站之间可以建立通信链路;或者,在建立与所述第二基站之间的非UE相关连接时,获取所述第二基站上报的与所述第二基站有直接接口的第一基站的信息,根据获取到的信息确定所述第一基站与所述第二基站之间可以建立通信链路;
    方式三:通过UE相关信令向所述第一基站发送所述第一基站与所述第二基站之间是否可以建立通信链路的询问消息,其中携带第二基站标识,当接收到所述第一基站返回的接受消息时,确定所述第一基站与所述第二基站之间可以建立通信链路;或者,通过UE相关信令向所述第二基站发送所述第二基站与所述第一基站之间是否可以建立通信链路的询问消息,其中携带第一基站标识,当接收到所述第二基站返回的接受消息时,确定所述第二基站与所述第一基站之间可以建立通信链路。
  19. 根据权利要求17所述的设备,其特征在于,所述发起单元,具体用于:
    在UE的直接通信请求消息触发下,发起建立所述第一UE和所述第二UE之间的经由所述第一基站和所述第二基站的直接通信路径。
  20. 根据权利要求17所述的设备,其特征在于,所述发起单元,具体用于:
    获取所述第一基站用于直接通信的IP地址和隧道端口号;
    向所述第二基站发送路径建立请求消息,其中携带所述第一基站用于直接通信的IP地址和隧道端口号;接收所述第二基站返回的路径建立响应消息,其中包含所述第二基站用于直接通信的IP地址和隧道端口号;
    向所述第一基站发送路径建立请求消息,其中携带所述第二基站用于直接通信的IP地址和隧道端口号;接收所述第一基站返回的路径建立响应消息。
  21. 根据权利要求20所述的设备,其特征在于,所述发起单元向所述第一基站发送直接路径隧道信息请求消息,并接收所述第一基站返回的所述第一基站用于直接通信的IP地址和隧道端口号;或者,所述发起单元向所述第一基站发送询问消息,并从所述第一基站返回的接受消息中获得所述第一基站用于直接通信的IP地址和隧道端口号。
  22. 根据权利要求17所述的设备,其特征在于,所述发起单元,具体用于:
    向所述第一基站发送路径建立触发命令,其中携带第二基站标识以及用于所述第二基站确定UE的标识信息;
    所述第一基站收到所述路径建立触发命令后,向所述第二基站发送路径建立请求消息,其中携带所述第一基站用于直接通信的用户面的IP地址和隧道端口号、第一基站控制面标识,以及所述用于所述第二基站确定UE的标识信息;
    所述第二基站根据所述第一基站发送的路径建立请求消息中的UE的标识信息,获知要对所述第二UE建立直接通信路径,所述第二基站与所述第二UE进行无线资源控制RRC重配过程,建立所述第二基站与所述第二UE之间用于直接通信的无线承载;
    接收所述第一基站返回的路径建立触发响应消息。
  23. 一种路径建立设备,其特征在于,该设备包括:
    第一单元,用于接收核心网设备发送的路径建立请求消息,其中携带第一用户设备UE驻留的第一基站用于直接通信的IP地址和隧道端口号;
    第二单元,用于与第二UE进行无线资源控制RRC重配过程,建立在所述设备与所述第二UE之间用于直接通信的无线承载;
    第三单元,用于向所述核心网设备返回路径建立响应消息,其中包含第二基站用于直接通信的IP地址和隧道端口号。
  24. 根据权利要求23所述的设备,其特征在于,所述第三单元还用于:
    在建立与所述核心网设备之间的非UE相关连接时,向所述核心网设备上报与自身有直接接口的基站的信息。
  25. 根据权利要求23所述的设备,其特征在于,
    所述第一单元还用于:接收所述核心网设备发送的所述第一基站与所述第二基站之间是否可以建立通信链路的询问消息,其中携带第二基站标识;
    所述第三单元还用于:当根据所述第二基站标识确定所述第一基站与所述第二基站之间可以建立通信链路时,向所述核心网设备返回接受消息。
  26. 一种路径建立设备,其特征在于,该设备包括:
    第一单元,用于接收核心网设备发送的路径建立触发命令,其中携带第二用户设备UE驻留的第二基站标识,以及用于第二基站确定UE的标识信息;
    第三单元,用于向所述第二基站发送路径建立请求消息,其中携带第一基站用于直接通信的用户面的IP地址和隧道端口号、第一基站控制面标识,以及用于所述第二基站确定UE的标识信息;
    第二单元,用于与所述第一UE进行无线资源控制RRC重配,并且向所述核心网设备返回路径建立触发响应消息。
  27. 根据权利要求26所述的设备,其特征在于,所述第三单元还用于:
    在建立与所述核心网设备之间的非UE相关连接时,向所述核心网设备上报与自身有直接接口的基站的信息。
  28. 根据权利要求26所述的设备,其特征在于,
    所述第一单元还用于:接收所述核心网设备发送的所述第一基站与所述第二基站之间是否可以建立通信链路的询问消息,其中携带第二基站标识;
    所述第三单元还用于:当根据所述第二基站标识确定所述第一基站与所述第二基站之间可以建立通信链路时,向所述核心网设备返回接受消息。
  29. 根据权利要求26所述的设备,其特征在于,
    所述第二单元还用于:根据所述第一UE驻留的所述第一基站发送的路径建立请求消息,获知要对所述第二UE建立直接通信路径,与所述第二UE进行RRC重配过程,建立所述第二基站与所述第二UE之间用于直接通信的无线承载;
    所述第三单元还用于:向所述第一基站返回路径建立响应消息,其中包含所述第二基站用于直接通信的IP地址和隧道端口号,以及第二基站控制面标识。
  30. 一种路径建立设备,其特征在于,该设备包括:
    第二单元,用于根据第一用户设备UE驻留的第一基站发送的路径建立请求消息,获知要对第二UE建立直接通信路径,与所述第二UE进行无线资源控制RRC重配过程,建立第二基站与所述第二UE之间用于直接通信的无线承载;
    第三单元,用于向所述第一基站返回路径建立响应消息,其中包含所述第二基站用于直接通信的IP地址和隧道端口号,以及第二基站控制面标识。
  31. 根据权利要求30所述的设备,其特征在于,所述第三单元还用于:
    在建立与所述核心网设备之间的非UE相关连接时,向所述核心网设备上报与自身有直接接口的基站的信息。
  32. 一种路径建立系统,其特征在于,该系统包括:第一用户设备UE驻留的第一基站和第二UE驻留的第二基站,其中,
    所述第二基站用于:
    接收核心网设备发送的路径建立请求消息,其中携带所述第一UE驻留的所述第一基站用于直接通信的IP地址和隧道端口号;
    与所述第二UE进行无线资源控制RRC重配过程,建立所述第二基站与所述第二UE之间用于直接通信的无线承载;
    向所述核心网设备返回路径建立响应消息,其中包含所述第二基站用于直接通信的IP地址和隧道端口号;
    所述第一基站用于:
    接收所述核心网设备发送的路径建立请求消息,其中携带所述第二基站用于直接通信的IP地址和隧道端口号;
    与所述第一UE进行RRC重配过程,建立所述第一基站与所述第一UE之间用于直接通信的无线承载;
    向所述核心网设备返回路径建立响应消息。
  33. 根据权利要求32所述的系统,其特征在于,所述第一基站还用于:
    接收所述核心网设备发送的直接路径隧道信息请求消息,并返回所述第一基站用于直接通信的IP地址和隧道端口号给核心网设备;或者,接收所述核心网设备发送的询问消息,并返回接受消息,其中携带所述第一基站用于直接通信的IP地址和隧道端口号。
  34. 根据权利要求32所述的系统,其特征在于,所述第一基站和/或所述第二基站还用于:在建立与所述核心网设备之间的非UE相关连接时,向所述核心网设备上报与自身有直接接口的基站的信息。
  35. 根据权利要求32所述的系统,其特征在于,所述第一基站还用于:
    接收所述核心网设备发送的所述第一基站与所述第二基站之间是否可以建立通信链路的询问消息,其中携带第二基站标识;
    当根据所述第二基站标识确定所述第一基站与所述第二基站之间可以建立通信链路时,向所述核心网设备返回接受消息。
  36. 根据权利要求35所述的系统,其特征在于,所述接受消息中还包括所述第一基站用于直接通信的IP地址和隧道端口号。
  37. 一种路径建立系统,其特征在于,该系统包括:第一用户设备UE驻留的第一基站和第二UE驻留的第二基站,其中,
    所述第一基站用于:
    接收核心网设备发送的路径建立触发命令,其中携带第二基站标识,以及用于所述第二基站确定UE的标识信息;
    向所述第二UE驻留的所述第二基站发送路径建立请求消息,其中携带所述第一基站用 于直接通信用户面的IP地址和隧道端口号、第一基站控制面标识,以及用于所述第二基站确定UE的标识信息;
    所述第二基站用于:
    根据所述第一基站发送的路径建立请求消息,获知要对所述第二UE建立直接通信路径;与所述第二UE进行无线资源控制RRC重配过程,建立所述第二基站与所述第二UE之间用于直接通信的无线承载;
    向所述第一基站返回路径建立响应消息,其中包含所述第二基站用于直接通信的IP地址和隧道端口号,以及第二基站控制面标识;
    所述第一基站还用于:与所述第一UE进行RRC重配,并且向所述核心网设备返回路径建立触发响应消息。
  38. 根据权利要求37所述的系统,其特征在于,所述第一基站和/或所述第二基站还用于:在建立与所述核心网设备之间的非UE相关连接时,向所述核心网设备上报与自身有直接接口的基站的信息。
  39. 根据权利要求37所述的系统,其特征在于,所述第一基站还用于:
    接收所述核心网设备发送的所述第一基站与所述第二基站之间是否可以建立通信链路的询问消息,其中携带第二基站标识;
    当根据所述第二基站标识确定所述第一基站与所述第二基站之间可以建立通信链路时,向所述核心网设备返回接受消息。
  40. 一种核心网设备,其特征在于,该设备包括:处理器、存储器;
    所述存储器,用于存储一个或多个可执行程序,被用于配置所述处理器;
    所述处理器,被配置了一个或多个可执行程序,所述一个或多个可执行程序用于执行以下方法:用于确定第一用户设备UE驻留的第一基站和第二UE驻留的第二基站可以建立通信链路;用于发起建立所述第一UE和所述第二UE之间的经由所述第一基站和所述第二基站的直接通信路径。
  41. 根据权利要求40所述的设备,其特征在于,所述处理器采用下列方式之一确定所述第一UE驻留的所述第一基站和所述第二UE驻留的所述第二基站可以建立通信链路:
    方式一:根据预先配置的所述第一基站和所述第二基站之间具有直接接口的信息,确定所述第一基站与所述第二基站之间可以建立通信链路;
    方式二:在建立与所述第一基站之间的非用户设备UE相关连接时,获取所述第一基站上报的与所述第一基站有直接接口的第二基站的信息,根据获取到的信息确定所述第一基站与所述第二基站之间可以建立通信链路;或者,在建立与所述第二基站之间的非UE相关连接时,获取所述第二基站上报的与所述第二基站有直接接口的第一基站的信息,根据获取到的信息确定所述第一基站与所述第二基站之间可以建立通信链路;
    方式三:通过UE相关信令向所述第一基站发送所述第一基站与所述第二基站之间是否可以建立通信链路的询问消息,其中携带第二基站标识,当接收到所述第一基站返回的接受消息时,确定所述第一基站与所述第二基站之间可以建立通信链路;或者,通过UE相关信令向所述第二基站发送所述第二基站与所述第一基站之间是否可以建立通信链路的询问消息,其中携带第一基站标识,当接收到所述第二基站返回的接受消息时,确定所述第二基站 与所述第一基站之间可以建立通信链路。
  42. 根据权利要求40所述的设备,其特征在于,所述处理器具体用于:
    在UE的直接通信请求消息触发下,发起建立所述第一UE和所述第二UE之间的经由所述第一基站和所述第二基站的直接通信路径。
  43. 根据权利要求40所述的设备,其特征在于,所述处理器具体用于:
    获取所述第一基站用于直接通信的IP地址和隧道端口号;
    向所述第二基站发送路径建立请求消息,其中携带所述第一基站用于直接通信的IP地址和隧道端口号;接收所述第二基站返回的路径建立响应消息,其中包含所述第二基站用于直接通信的IP地址和隧道端口号;
    向所述第一基站发送路径建立请求消息,其中携带所述第二基站用于直接通信的IP地址和隧道端口号;接收所述第一基站返回的路径建立响应消息。
  44. 根据权利要求43所述的设备,其特征在于,所述处理器向所述第一基站发送直接路径隧道信息请求消息,并接收所述第一基站返回的所述第一基站用于直接通信的IP地址和隧道端口号;或者,所述发起单元向所述第一基站发送询问消息,并从所述第一基站返回的接受消息中获得所述第一基站用于直接通信的IP地址和隧道端口号。
  45. 根据权利要求40所述的设备,其特征在于,所述处理器具体用于:
    向所述第一基站发送路径建立触发命令,其中携带第二基站标识以及用于所述第二基站确定UE的标识信息;
    所述第一基站收到所述路径建立触发命令后,向所述第二基站发送路径建立请求消息,其中携带所述第一基站用于直接通信的用户面的IP地址和隧道端口号、第一基站控制面标识,以及所述用于所述第二基站确定UE的标识信息;
    所述第二基站根据所述第一基站发送的路径建立请求消息中的UE的标识信息,获知要对所述第二UE建立直接通信路径,所述第二基站与所述第二UE进行无线资源控制RRC重配过程,建立所述第二基站与所述第二UE之间用于直接通信的无线承载;
    接收所述第一基站返回的路径建立触发响应消息。
  46. 一种基站,其特征在于,包括:处理器、存储器、收发机;
    所述存储器,用于存储一个或多个可执行程序,被用于配置所述处理器;
    所述收发机,用于在所述处理器的控制下接收和发送数据;
    所述处理器,被配置了一个或多个可执行程序,所述一个或多个可执行程序用于执行以下方法:用于接收核心网设备发送的路径建立请求消息,其中携带第一用户设备UE驻留的第一基站用于直接通信的IP地址和隧道端口号;或者,携带第二UE驻留的第二基站用于直接通信的IP地址和隧道端口号;
    用于与第二UE进行无线资源控制RRC重配过程,建立在所述设备与所述第二UE之间用于直接通信的无线承载;或者,与所述第一UE进行无线资源控制RRC重配过程,建立所述第一基站与所述第一UE之间用于直接通信的无线承载;
    用于向所述核心网设备返回路径建立响应消息,其中包含第二基站用于直接通信的IP地址和隧道端口号;或者,包含第一基站用于直接通信的IP地址和端口号。
  47. 根据权利要求46所述的基站,其特征在于,所述处理器还用于:
    在建立与所述核心网设备之间的非UE相关连接时,向所述核心网设备上报与自身有直接接口的基站的信息。
  48. 根据权利要求46所述的基站,其特征在于,所述处理器还用于:
    接收所述核心网设备发送的所述第一基站与所述第二基站之间是否可以建立通信链路的询问消息,其中携带第二基站标识;
    当根据所述第二基站标识确定所述第一基站与所述第二基站之间可以建立通信链路时,向所述核心网设备返回接受消息。
  49. 一种基站,其特征在于,包括:处理器、存储器、收发机;
    所述存储器,用于存储一个或多个可执行程序,被用于配置所述处理器;
    所述收发机,用于在所述处理器的控制下接收和发送数据;
    所述处理器,被配置了一个或多个可执行程序,所述一个或多个可执行程序用于执行以下方法:用于接收核心网设备发送的路径建立触发命令,其中携带第二用户设备UE驻留的第二基站标识,以及用于第二基站确定UE的标识信息;用于向所述第二基站发送路径建立请求消息,其中携带第一基站用于直接通信的用户面的IP地址和隧道端口号、第一基站控制面标识,以及用于所述第二基站确定UE的标识信息;用于与所述第一UE进行无线资源控制RRC重配,并且向所述核心网设备返回路径建立触发响应消息;
    用于根据第一用户设备UE驻留的第一基站发送的路径建立请求消息,获知要对第二UE建立直接通信路径,与所述第二UE进行无线资源控制RRC重配过程,建立第二基站与所述第二UE之间用于直接通信的无线承载;用于向所述第一基站返回路径建立响应消息,其中包含所述第二基站用于直接通信的IP地址和隧道端口号,以及第二基站控制面标识。
  50. 根据权利要求49所述的基站,其特征在于,所述处理器还用于:
    在建立与所述核心网设备之间的非UE相关连接时,向所述核心网设备上报与自身有直接接口的基站的信息。
  51. 根据权利要求49所述的基站,其特征在于,所述处理器还用于:
    接收所述核心网设备发送的所述第一基站与所述第二基站之间是否可以建立通信链路的询问消息,其中携带第二基站标识;
    当根据所述第二基站标识确定所述第一基站与所述第二基站之间可以建立通信链路时,向所述核心网设备返回接受消息。
  52. 根据权利要求49所述的基站,其特征在于,所述处理器还用于:
    根据所述第一UE驻留的所述第一基站发送的路径建立请求消息,获知要对所述第二UE建立直接通信路径,与所述第二UE进行RRC重配过程,建立所述第二基站与所述第二UE之间用于直接通信的无线承载;
    向所述第一基站返回路径建立响应消息,其中包含所述第二基站用于直接通信的IP地址和隧道端口号,以及第二基站控制面标识。
  53. 一种路径建立系统,其特征在于,该系统包括:核心网设备和基站,其中,
    所述核心网设备用于:
    确定第一用户设备UE驻留的第一基站和第二UE驻留的第二基站可以建立通信链路;用于发起建立所述第一UE和所述第二UE之间的经由所述第一基站和所述第二基站的直接 通信路径;
    所述基站用于:
    接收核心网设备发送的路径建立请求消息,其中携带第一用户设备UE驻留的第一基站用于直接通信的IP地址和隧道端口号;或者,携带第二UE驻留的第二基站用于直接通信的IP地址和隧道端口号;
    用于与第二UE进行无线资源控制RRC重配过程,建立在所述设备与所述第二UE之间用于直接通信的无线承载;或者,与所述第一UE进行无线资源控制RRC重配过程,建立所述第一基站与所述第一UE之间用于直接通信的无线承载;
    用于向所述核心网设备返回路径建立响应消息,其中包含第二基站用于直接通信的IP地址和隧道端口号;或者,包含第一基站用于直接通信的IP地址和端口号。
  54. 一种路径建立系统,其特征在于,该系统包括:核心网设备和基站,其中,
    所述核心网设备用于:
    确定第一用户设备UE驻留的第一基站和第二UE驻留的第二基站可以建立通信链路;用于发起建立所述第一UE和所述第二UE之间的经由所述第一基站和所述第二基站的直接通信路径;
    所述基站用于:
    接收核心网设备发送的路径建立触发命令,其中携带第二用户设备UE驻留的第二基站标识,以及用于第二基站确定UE的标识信息;用于向所述第二基站发送路径建立请求消息,其中携带第一基站用于直接通信的用户面的IP地址和隧道端口号、第一基站控制面标识,以及用于所述第二基站确定UE的标识信息;用于与所述第一UE进行无线资源控制RRC重配,并且向所述核心网设备返回路径建立触发响应消息;
    用于根据第一用户设备UE驻留的第一基站发送的路径建立请求消息,获知要对第二UE建立直接通信路径,与所述第二UE进行无线资源控制RRC重配过程,建立第二基站与所述第二UE之间用于直接通信的无线承载;用于向所述第一基站返回路径建立响应消息,其中包含所述第二基站用于直接通信的IP地址和隧道端口号,以及第二基站控制面标识。
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