WO2016161886A1 - 在设备直通系统中用户终端与中继节点的通信方法和装置 - Google Patents

在设备直通系统中用户终端与中继节点的通信方法和装置 Download PDF

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Publication number
WO2016161886A1
WO2016161886A1 PCT/CN2016/076730 CN2016076730W WO2016161886A1 WO 2016161886 A1 WO2016161886 A1 WO 2016161886A1 CN 2016076730 W CN2016076730 W CN 2016076730W WO 2016161886 A1 WO2016161886 A1 WO 2016161886A1
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WO
WIPO (PCT)
Prior art keywords
remote
relay node
information
connection establishment
connection
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PCT/CN2016/076730
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English (en)
French (fr)
Inventor
汪梦珍
陈琳
黄莹
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中兴通讯股份有限公司
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Publication of WO2016161886A1 publication Critical patent/WO2016161886A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
    • H04W12/06—Authentication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria

Definitions

  • the present invention relates to the field of communication technology between a user terminal and a relay node in a device through-system, and more particularly to a communication method and device for a user terminal and a relay node in a device through-through system.
  • D2D technology can reduce the burden of cellular networks, reduce the battery power consumption of user equipment, increase the data rate, and improve the robustness of the network infrastructure, which satisfies the requirements of the above high data rate services and proximity services.
  • D2D technology is also called Proximity Services (ProSe), and one-side link (Sidelink, SL).
  • D2D technology can work in licensed or unlicensed bands, allowing multiple D2D-enabled user equipment (D2D User Equipment, D2D UE) to directly discover without network infrastructure or network infrastructure. / Direct communication.
  • D2D User Equipment D2D User Equipment
  • D2D UE D2D User Equipment
  • UE1 and UE2 perform data interaction under the coverage of the cellular network, and the user plane data does not pass through the network infrastructure, as shown in mode 1 of FIG. 1;
  • UE relay transmission in the weak/uncovered area allows UE4 with poor signal quality to communicate with the network through UE3 with network coverage nearby, which can help operators expand coverage and increase capacity. ;
  • the D2D technology generally includes a D2D discovery technology and a D2D communication technology, wherein the D2D discovery technology is used to determine/determine the proximity between two or more D2D user devices (for example, within a range in which D2D direct communication is possible) Or a technique for determining/determining that the first user equipment is adjacent to the second user equipment.
  • D2D user equipment can discover each other by transmitting or receiving discovery signals/information;
  • D2D communication technology refers to a technology in which some or all communication data between D2D user equipments can communicate directly without using a network infrastructure.
  • D2D communication not only work in a network coverage scenario, but also requires partial coverage and no network coverage scenarios.
  • the UE3 can communicate with the network side using the relevant LTE mode, and can also serve as a relay and out of coverage terminal (in the figure).
  • UE4 communicates using D2D mode, including D2D Discovery and/or D2D communication.
  • UE4 a remote user (Remote UE) and UE3 as a relay user (Relay UE).
  • UE6 may forward data packets between UE5 and UE7, UE6 may be referred to as a relay user, and UE5 may be referred to as a remote user, and UE7 may be called a UE. It is the remote user.
  • the related technology does not provide a complete solution for the connection establishment process of the remote D2D user equipment and the relay device in the relay transmission mode in the above scenario.
  • the present invention provides a communication method between a remote user and a relay node in a device through-through system, and the technical problem to be solved is to provide a complete solution for connection establishment and bearer configuration between the remote UE and the relay UE.
  • a method for communicating a remote user and a relay node in a device through-through system comprising:
  • the remote UE sends the connection establishment request information to the relay node
  • the remote UE receives connection establishment response information sent by the relay node.
  • the remote UE is a UE without a network coverage UE, a cell edge UE, or a network coverage and looking for a relay node to perform data forwarding.
  • connection establishment request information includes any combination of the following fields: an identifier of the remote UE, a connection establishment cause, and a priority.
  • the identifier of the remote UE includes: a user equipment identifier Prose UE ID of the proximity service allocated by the service function entity and/or a device-to-device D2D communication group identifier to which the remote UE belongs.
  • the priority includes: a user equipment priority of the remote UE, a service priority, a priority of the communication group that the remote UE requests to communicate, or a priority of the D2D bearer that is requested to be established.
  • the step of the remote UE sending the connection establishment request information to the relay node includes:
  • the remote UE sends the connection establishment request information under any of the following conditions:
  • the remote UE has data to send to the network
  • the remote UE requests access to the network.
  • connection establishment request information further includes one or more D2D bearer configuration request information.
  • the D2D bearer configuration request information includes any combination of the following: a quality of service level identifier QCI, an allocation and retention priority ARP, and UE-to-network indication information.
  • the D2D bearer configuration request information further includes an uplink/downlink/unilateral guaranteed bit rate and/or an uplink/downlink/unilateral maximum bit rate.
  • connection establishment response information is connection establishment acceptance information or connection establishment rejection information
  • the connection establishment acceptance information includes: a UE identifier allocated by the relay node for the remote UE, and MAC layer configuration information, physical layer configuration information, and configuration information added by the D2D bearer. At least one;
  • the connection establishment rejection information includes: a rejection reason and/or a prohibition timing information, wherein the prohibition timing information is used to control the remote UE to fail to send connection establishment request information before a preset prohibition timeout expires.
  • the configuration information added by the D2D bearer includes any combination of the following fields: D2D bearer identifier, packet data convergence protocol PDCP layer configuration information, radio link control RLC layer configuration information, logical channel identifier, logical channel configuration, remote The aggregate maximum bit rate UE-AMBR of the UE.
  • the reason for the rejection is any one of the following: the authorization authentication of the remote UE fails, the number of accessed remote UEs reaches a preset upper limit, no available resources, and the relay node capability is affected. limit.
  • the method further includes:
  • connection establishment response information is connection establishment acceptance information
  • the remote UE completes the corresponding configuration according to the connection establishment acceptance information
  • connection establishment response information is connection establishment rejection information
  • the remote UE searches for other relay node access, or waits for the prohibition timer to timeout and then sends the connection establishment request information to the relay node again.
  • the method further includes:
  • the remote UE sends connection release request information to the relay node.
  • the step of the remote UE sending the connection release request information to the relay node includes:
  • the remote UE sends connection release request information to the relay node under the following conditions:
  • the remote UE If the remote UE measures that the channel condition between the remote UE and the relay node is degraded, the remote UE requests to release the connection with the relay node; or
  • the remote UE If the remote UE no longer needs to remain connected to the network through the relay node, the remote UE requests to release the connection with the relay node.
  • a method for communicating a remote user and a relay node in a device through-through system comprising:
  • the relay node receives the connection establishment request information sent by the remote UE;
  • the relay node sends connection establishment acceptance information to the remote UE; otherwise, the relay node sends connection establishment rejection information to the Remote UE.
  • the step of the relay node determining whether to accept the connection establishment request of the remote UE includes:
  • the relay node Determining, by the relay node, whether the remote UE authorizes the authentication; if the authorization authentication passes, the relay node determines whether there are sufficient air interface resources to provide the remote UE with the service;
  • the relay node accepts a connection establishment request of the remote UE, otherwise the relay node rejects The connection establishment request of the remote UE.
  • the step of determining, by the relay node, whether there are sufficient air interface resources to provide services for the remote UE includes:
  • the relay node determines, according to any information below, whether there are sufficient air interface resources to provide services for the remote UE: the number of remote UEs that have been accessed, the transceiving capability of the relay node, and the resources of the relay node. The load and the priority of the remote UE.
  • connection establishment accepting information includes: at least one of a UE identifier allocated by the relay node for the remote UE, media access control MAC layer configuration information, physical layer configuration information, and configuration information added by the D2D bearer;
  • the connection establishment rejection information includes: a rejection reason and/or a prohibition timing information, wherein the prohibition timing information is used to control the remote UE to fail to send connection establishment request information before a preset prohibition timeout expires.
  • the configuration information added by the D2D bearer includes any combination of the following fields: D2D bearer identifier, packet data convergence protocol PDCP layer configuration information, radio link control RLC layer configuration information, logical channel identifier, logical channel configuration, and remote The aggregate maximum bit rate UE-AMBR of the UE.
  • the reason for the rejection includes one of the following information: the authorization authentication of the remote UE fails, the number of accessed remote UEs reaches a preset upper limit, no available resources, and the relay node capability Limited.
  • the method further includes:
  • the relay node completes authorization authentication of the remote UE with the proximity service function entity according to the identifier of the remote UE in the connection establishment request information;
  • the relay node acquires subscription information of the remote UE from the neighboring service function entity, where the subscription information of the remote UE includes an initial bearer-level quality of service QoS parameter of the remote UE and/or a downlink service flow template TFT information.
  • the initial bearer level QoS parameter includes any combination of the following: a quality of service level QCI, an allocation and reservation priority ARP, an aggregate maximum bit rate UE-AMBR, and an access point aggregation maximum bit rate APN-AMBR.
  • the method further includes:
  • the relay node sends connection release information to the remote UE;
  • the relay node receives connection release request information sent by the remote UE.
  • the step of the relay node sending connection release information to the remote UE includes:
  • the relay node sends the connection release information to the remote UE under the following conditions:
  • the relay node releases all connections with the remote UE;
  • the relay node releases a connection with the remote UE if the relay node measures that the channel condition between the remote UE and the remote UE is degraded;
  • the relay node When the relay node receives a connection establishment request of a remote UE with a high priority, if the number of remote UEs that have established a connection with the relay node reaches a preset upper limit or the relay node If the resource load is overloaded, the relay node releases the preemptable connection of the low-level remote UE.
  • the first sending module is configured to: send connection establishment request information to the relay node;
  • the first receiving module is configured to: receive connection establishment response information sent by the relay node.
  • the device is located in a UE without a network coverage UE, a cell edge UE, or a network coverage and looking for a relay node for data forwarding.
  • connection establishment request information includes any combination of the following fields: an identifier of the remote UE, a connection establishment cause, and a priority.
  • the identifier of the remote UE includes: a user equipment identifier Prose UE ID of a proximity service allocated by the service function entity and/or a device pass-through D2D communication group identifier to which the remote UE belongs.
  • the priority includes: a user equipment priority of the remote UE, a service priority, a priority of the communication group that the remote UE requests to communicate, or a priority of the D2D bearer that is requested to be established.
  • the first sending module is configured to send connection establishment request information to the relay node as follows:
  • connection establishment request information is sent under any of the following conditions:
  • the remote UE has data to send to the network
  • the remote UE requests access to the network.
  • connection establishment request information further includes one or more D2D bearer configuration request information.
  • the D2D bearer configuration request information includes any combination of the following: a quality of service level identifier QCI, an allocation and retention priority ARP, and UE-to-network indication information.
  • the D2D bearer configuration request information further includes an uplink/downlink/unilateral guaranteed bit rate and/or an uplink/downlink/unilateral maximum bit rate.
  • connection establishment response information is connection establishment acceptance information or connection establishment rejection information
  • connection establishment acceptance information includes: at least one of a UE identifier allocated by the relay node for the remote UE, media layer control MAC layer configuration information, physical layer configuration information, and configuration information added by the D2D bearer;
  • the connection establishment rejection information includes: a rejection reason and/or a prohibition timing information, wherein the prohibition timing information is used to control the remote UE not to send a connection establishment request message before a preset prohibition timeout expires.
  • the configuration information added by the D2D bearer includes any combination of the following fields: D2D bearer identifier, packet data convergence protocol PDCP layer configuration information, radio link control RLC layer configuration information, logical channel identifier, logical channel configuration, and remote The aggregate maximum bit rate UE-AMBR of the UE.
  • the reason for the rejection includes any one of the following information: the authorization authentication of the remote UE fails, the number of accessed remote UEs reaches a preset upper limit, no available resources, and the relay node capability Limited.
  • the device further includes:
  • the processing module is configured to: if the connection establishment response information is the connection establishment acceptance information, complete the corresponding configuration according to the connection establishment acceptance information; if the connection establishment response information is the connection establishment rejection information, look for other relay node access , or wait for the prohibition timer to expire before sending the connection establishment request information to the relay node again.
  • the device further includes:
  • the second receiving module is configured to: receive connection release information sent by the relay node; or
  • the second sending module is configured to: send connection release request information to the relay node.
  • the second sending module is configured to send the connection release request as follows Information to the relay node:
  • the remote UE no longer needs to remain connected to the network through the relay node, then request to release the connection with the relay node.
  • the third receiving module is configured to: receive connection establishment request information
  • the first determining module is configured to: determine whether to accept the connection establishment request of the remote UE;
  • a third sending module configured to: if the connection establishment request of the remote UE is accepted, send connection establishment acceptance information to the remote UE; otherwise, send connection establishment rejection information to the remote UE.
  • the first determining module is configured to determine whether to accept the connection establishment request of the remote UE according to the following manner:
  • Determining whether the remote UE authorizes the authentication if the authorization is passed, determining whether the relay node has sufficient air interface resources to provide services for the remote UE;
  • the remote UE authorizes the authentication and the relay node has sufficient air interface resources to provide the remote UE with a service, the connection establishment request of the remote UE is accepted, otherwise the connection establishment request of the remote UE is rejected.
  • the first determining module is configured to determine, according to the following manner, whether there are sufficient air interface resources to provide services for the remote UE:
  • connection establishment accepting information includes: the UE allocated by the relay node to the remote UE At least one of identity, media access control MAC layer configuration information, physical layer configuration information, and configuration information added by the D2D bearer;
  • the connection establishment rejection information includes: a rejection reason and/or a prohibition timing information, wherein the prohibition timing information is used to control the remote UE not to send a connection establishment request message before a preset prohibition timeout expires.
  • the configuration information added by the D2D bearer includes any combination of the following fields: D2D bearer identifier, packet data convergence protocol PDCP layer configuration information, radio link control RLC layer configuration information, logical channel identifier, logical channel configuration, remote The aggregate maximum bit rate UE-AMBR of the UE.
  • the reason for the rejection includes one of the following information: the authorization authentication of the remote UE fails, the number of accessed remote UEs reaches a preset upper limit, no available resources, and the relay node capability Limited.
  • the device further includes:
  • the authentication module is configured to: perform authorization authentication on the remote UE with the proximity service function entity according to the identifier of the remote UE in the connection establishment request information;
  • An obtaining module configured to: obtain subscription information of the remote UE from the neighboring service function entity, where the subscription information of the remote UE includes an initial bearer-level quality of service QoS parameter and/or a downlink service flow template of the remote UE TFT information.
  • the initial bearer level QoS parameter includes any combination of the following: a quality of service level QCI, an allocation and reservation priority ARP, an aggregate maximum bit rate UE-AMBR, and an access point aggregation maximum bit rate APN-AMBR.
  • the device further includes:
  • a fourth sending module configured to: send connection release information to the remote UE; or
  • the fourth receiving module is configured to: receive connection release request information sent by the remote UE.
  • the fourth sending module is configured to send connection release information to the remote UE as follows:
  • relay node no longer continues to operate as a relay node, release all connections to the remote UE;
  • the present invention provides an embodiment, in a scenario without network coverage, the remote UE is connected to the relay UE, and the relay UE can establish a connection according to the quality of service requirements of the remote UE, thereby ensuring that the remote UE can communicate with the network through the relay UE. .
  • FIG. 1 is a schematic diagram of a device through/system discovery/communication scenario in the related art
  • FIG. 2 is a flowchart of a method for communicating a user terminal and a relay node in a device through-through system according to an embodiment of the present invention
  • FIG. 3 is a flowchart of another method for communicating a user terminal and a relay node in a device through-through system according to an embodiment of the present invention
  • FIG. 4 is a flowchart of establishing a connection between a remote UE and a relay node according to Embodiment 1 of the present invention
  • FIG. 5 is a flowchart of a connection failure establishment of a remote UE and a relay node according to Embodiment 1 of the present invention
  • FIG. 6 is a flowchart of a connection release between a remote UE and a relay node according to Embodiment 2 of the present invention.
  • FIG. 7 is a flowchart of establishing a connection between a remote UE and a relay node according to Embodiment 3 of the present invention.
  • FIG. 8 is a structural diagram of a communication device between a user terminal and a relay node in a device through-through system according to an embodiment of the present invention.
  • FIG. 9 is a structural diagram of another communication device between a user terminal and a relay node in a device through-through system according to an embodiment of the present invention.
  • FIG. 2 is a flowchart of a method for communicating a remote user and a relay node in a device through-system, that is, a D2D communication system according to an embodiment of the present invention.
  • the method shown in Figure 2 includes:
  • Step 201 The remote UE sends connection establishment request information to the relay node.
  • the relay node is the relay user mentioned in the background section.
  • Step 202 The remote UE receives connection establishment response information sent by the relay node.
  • the remote UE in a scenario where the network is partially covered or has no network coverage or network coverage and the relay forwarding data is sought, the remote UE is connected to the relay UE, and the relay UE performs authorization authentication and access for the remote UE. Control so that the remote UE can remain connected to the network by relaying the UE.
  • FIG. 3 is a flowchart of another method for communicating a remote user and a relay node in a device through-through system according to an embodiment of the present invention.
  • the method shown in Figure 3 includes:
  • Step 301 The relay node receives the connection establishment request message information.
  • Step 302 The relay node determines whether to accept a connection establishment request of the remote UE, and obtains a determination result.
  • Step 303 If the relay node accepts the connection establishment request of the remote UE, the relay node sends connection establishment information to the remote UE; otherwise, the relay node sends connection establishment rejection information to the remote UE.
  • the remote UE in a scenario where the network is partially covered or has no network coverage or network coverage and the relay forwarding data is sought, the remote UE is connected to the relay UE, and the relay UE performs authorization authentication and access for the remote UE. Control so that the remote UE can remain connected to the network by relaying the UE.
  • the remote UE is a UE without a network coverage UE, a cell edge UE, or a network coverage and looking for a relay node to perform data forwarding.
  • the connection establishment request information includes any combination of the following fields: an identifier of the remote UE, a connection establishment cause, and a priority.
  • connection establishment request information Specifically, the partial fields of the connection establishment request information are described:
  • the identifier of the remote UE includes a Prose UE ID allocated by a neighboring service function entity Prose function and/or a device pass-through D2D communication group identifier to which the remote UE belongs.
  • the priority in the connection establishment request includes the user equipment priority of the remote UE, the service priority, the priority of the communication group that the remote UE requests to communicate, or the priority of the D2D bearer requested to be established.
  • the remote UE sends the connection establishment request under any of the following conditions, including:
  • the remote UE has data to send to the network
  • the remote UE requests access to the network.
  • the foregoing connection establishment request may be sent.
  • the high level or the low level in this document may be a priority set for each UE, or may be obtained by comparing a value of a certain priority of the UE with a threshold corresponding to the priority.
  • the determined high level or low level for example, when the value of a certain priority of the UE is greater than or equal to the threshold of the priority, thereby determining that the priority of the UE is a high level according to the information, otherwise determining the The priority of the UE is a low level.
  • the connection establishment request information further includes one or more D2D bearer configuration request information.
  • connection establishment and the D2D bearer establishment process are performed simultaneously, in order to reduce the number of information interactions and improve the information processing efficiency, in the process of establishing the connection, the D2D bearer establishment negotiation is completed at the same time, and the information interaction process is simplified; In practical applications, the connection establishment process and the D2D bearer establishment process can also be performed separately, that is, the two processes are independent of each other.
  • the D2D bearer configuration request information includes any combination of the following fields: a quality of service level identifier QCI, an allocation and retention priority ARP, and UE-to-network indication information.
  • the UE-to-network indication information is used to distinguish the traffic with the UE-to-UE, the pure remote UE to the relay UE, and the subsequent control of the EPS bearer.
  • the D2D bearer configuration request information further includes an uplink/downlink/unilateral guaranteed bit rate and/or an uplink/downlink/unilateral maximum bit rate when the D2D bearer is a bearer of the guaranteed bit rate GBR.
  • the relay node is conveniently configured to establish a bearer that facilitates data transmission by the remote UE by transmitting the foregoing information to the relay node.
  • connection establishment response information is connection establishment information or connection establishment rejection information, where the connection establishment information includes a UE identifier allocated by the relay node for the remote UE, and MAC layer configuration information, physical layer configuration information, and D2D bearer. At least one of the added configuration information; the connection establishment rejection information includes a rejection reason and/or a prohibition timing information, wherein the prohibition timing information is used to control the remote UE not to send a connection establishment before a preset prohibition timeout expires Request information.
  • the configuration information added by the D2D bearer includes any combination of the following fields: D2D bearer identifier, packet data convergence protocol PDCP layer configuration information, radio link control RLC layer configuration information, logical channel identifier, logical channel configuration, remote UE Aggregate the maximum bit rate UE-AMBR.
  • the reason for the rejection is any one of the following: the authorization authentication of the remote UE fails, the number of accessed remote UEs reaches a preset upper limit, no available resources, and the capability of the relay node is limited.
  • the method further includes:
  • connection establishment response information is connection establishment configuration information
  • the remote UE completes corresponding configuration according to the configuration information
  • connection establishment response information is connection establishment rejection information
  • the remote UE searches for The other relay node accesses, or waits for the prohibition timer to expire before sending the connection establishment request information to the relay node again.
  • the method further includes:
  • the remote UE sends connection release request information to the relay node.
  • the remote UE may trigger the release operation of the connection by sending the connection release request information, or the release node actively initiates the release operation, and the remote UE receives the release information of the relay node to ensure timely release of resources and ensure rational use of resources. .
  • the remote UE sends the connection release request information to the relay node under the following conditions, including:
  • the remote UE If the remote UE measures that the channel condition between the remote UE and the relay node is degraded, the remote UE requests to release the connection with the relay node; or
  • the remote UE If the remote UE no longer needs to remain connected to the network through the relay node, the remote UE requests to release the connection with the relay node.
  • the signal variation can be judged by, for example, the measurement result being less than a given threshold, and or the remote UE reselecting other relay nodes.
  • the relay node determines whether to accept the connection establishment request of the remote UE, and obtains the determination result, including:
  • the relay node determines whether the remote UE authorizes the authentication; if the authorization authentication passes, the relay node determines whether there are sufficient air interface resources to provide the remote UE with the service;
  • the relay node accepts the connection establishment request of the remote UE, otherwise the relay node rejects the connection establishment request of the remote UE.
  • determining whether the remote UE authorizes the authentication determining whether the legality of the remote UE, determining whether the local resource has the capability to provide the remote UE, and determining whether the remote UE can be provided.
  • Service through the above judgment operation, can ensure the security and stability of the connection.
  • the relay node determines whether there are sufficient air interface resources to provide services for the remote UE, including:
  • the relay node determines, according to any information below, whether there are sufficient air interface resources to provide services for the remote UE, where the information includes the number of remote UEs that have been accessed, the transceiver capability of the relay node, and the middle Following the resource load of the node and the priority of the remote UE.
  • the connection establishment information includes a UE identifier allocated by the relay node for the remote UE, media layer control MAC layer configuration information, physical layer configuration information, and configuration information added by the D2D bearer.
  • At least one of the connection establishment rejection information includes a rejection reason and/or a prohibition timing information, wherein the prohibition timing information is used to control the remote UE to fail to transmit connection establishment request information before a preset prohibition timeout expires.
  • the UE identifier that is allocated by the relay node to the remote UE is uniquely identifiable in the relay node, and is used to ensure the uniqueness of the unicast when the remote UE communicates with the relay UE.
  • the configuration information added by the D2D bearer includes any combination of the following fields: D2D bearer identifier, packet data convergence protocol PDCP layer configuration information, radio link control RLC layer configuration information, logical channel identifier, logical channel configuration, and maximum aggregation of remote UEs. Bit rate UE-AMBR.
  • the reason for the rejection is any one of the following: the authorization authentication of the remote UE fails, the number of accessed remote UEs reaches a preset upper limit, no available resources, and the capability of the relay node is limited.
  • the remote UE is convenient to determine whether to initiate the request again, effectively controlling the number of interactions between the remote UE and the relay node, and reducing resource waste.
  • the method further includes:
  • the relay node completes the authorization authentication of the remote UE with the proximity service function entity Prose function according to the identifier of the remote UE in the connection establishment request information;
  • the relay node acquires subscription information of the remote UE from the proximity service function entity, where the subscription information of the remote UE includes an initial bearer-level quality of service QoS parameter and/or a downlink service flow template TFT information of the remote UE.
  • the initial bearer level QoS parameter includes any combination of the following information: a quality of service level QCI, an allocation and reservation priority ARP, an aggregate maximum bit rate UE-AMBR, and an access point aggregation maximum bit rate APN-AMBR.
  • the method further includes:
  • the relay node sends connection release information to the remote UE;
  • the relay node receives connection release request information sent by a remote UE.
  • the relay node sends connection release information to the remote UE under the following conditions, including:
  • the relay node releases all connections with remote UEs
  • the relay node If the relay node measures that the channel condition between it and the remote UE is degraded, the relay node releases the connection with the remote UE;
  • the relay node When the relay node receives a connection establishment request of a remote UE with a high priority, if the number of remote UEs that have established a connection with the relay node reaches a preset upper limit or a resource load of the relay node If the overload occurs, the relay node releases the preemptable connection of the low-level remote UE.
  • the relay node controls the release of the connection by using the foregoing conditions, ensures reasonable utilization of resources, and improves resource utilization.
  • connection establishment of the remote D2D UE and the relay D2D UE is given below, and the connection release process is performed. The following is explained in detail by way of Example 1 to Example 3.
  • Office A, B uses public safety UE1, UE2 with D2D capabilities. Officer A, B are all subscribed to public safety services.
  • UE1 is in a network coverage state
  • UE2 is in a networkless coverage state.
  • the UE2 wants to communicate with the network, and finds that the UE1 can serve as a relay node or receives an advertisement that can be broadcasted by the UE1 as a relay node, and the UE2 attempts to establish a connection with the UE1 through the UE-to-network Relay. Communicate with the network for forwarding data for it.
  • the UE2 sends a relay connection establishment request message to the relay node UE1.
  • the relay connection establishment request message may include information such as the identifier of the remote UE2, connection establishment cause, priority, and the like.
  • the identifier of the remote UE2 may be the Prose UE ID allocated by the Prose function and the D2D communication group identifier to which the remote UE2 belongs.
  • the connection establishment cause may be that the UE has data to be sent to the network, and the remote UE has data to be sent to the target UE.
  • the remote UE is to be connected to the network or has high priority access; the priority may be the priority of the remote UE user equipment, the priority of the service, the priority of the communication group that the remote UE wishes to communicate, or the priority of the D2D bearer that is desired to be established. .
  • the UE1 receives the relay connection establishment request message sent by the UE2, and performs authorization authentication for the UE2 according to the identity information of the UE2 and the Prose function. If the UE2 fails to pass the authentication, the UE1 sends a connection establishment reject message to the UE2, where the reason for the rejection is that the authentication fails. If the UE2 passes the authorization authentication, the UE1 performs access control on the UE2 according to the number of remote UEs with which the connection has been established, its own transceiving capability, resource load status, priority, and the like. If the UE1 allows the UE2 to access, the connection establishment receiving message is sent to the UE2.
  • connection establishment rejection message is sent to the UE1, and the reason for the rejection may be carried, as shown in FIG.
  • the reason for the rejection may be that the number of remote UEs that have been accessed reaches an upper limit, there is no available resource, and the capability of the relay node is limited.
  • the connection establishment reject message may carry a prohibition timer, and the remote UE2 is required to not repeatedly send the connection establishment request message to the relay node UE1 before the prohibition timer expires.
  • the UE1 may obtain the subscription information of the UE2 from the Prose function, such as the bearer-level QoS parameter, the UE aggregates the maximum bit rate, and the like.
  • the configuration of the security key may also be included.
  • the security key can be dynamically configured in the connection establishment phase.
  • the NAS PDU that the remote UE2 interacts with the Prose function is carried in the connection establishment interaction message, so that the UE2 can obtain the air interface key.
  • the relay UE1 can also obtain the key of the air interface encryption and decryption corresponding to the air interface transmission of the UE2 in the process of interacting with the Prose function.
  • the relay node UE1 releases the connection with the remote UE2: the relay node is no longer suitable for continuing as a relay node due to factors such as low power consumption and measurement of poor channel conditions between the remote node and the remote UE; After the node receives the connection establishment request of the high-priority uncovered UE, the number of uncovered UEs that have established a connection with the relay node reaches the upper limit or the relay node resources are negative. The load is higher and the relay node releases the connection with the low priority uncovered UE.
  • the connection release request may also be initiated by the remote UE, and after receiving the connection release request, the relay node releases the connection with the remote UE.
  • the remote UE If the remote UE measures that the channel condition between it and the relay node is degraded, or the remote UE no longer needs to maintain a connection with the network through the relay node, the remote UE will actively send a connection release request to the relay node.
  • the specific process is shown in Figure 6.
  • Office A, B uses public safety UE1, UE2 with D2D capabilities. Officer A, B are all subscribed to public safety services.
  • UE1 is in a network coverage state
  • UE2 is in a networkless coverage state.
  • the UE2 wants to communicate with the network, and finds that the UE1 can serve as a relay node or receives an advertisement that can be broadcasted by the UE1 as a relay node, and the UE2 attempts to establish a connection with the UE1 and complete the bearer configuration, through the relay node UE1 (UE-to -network Relay) communicates with the network for forwarding data.
  • the relay node UE1 UE-to -network Relay
  • the bearer configuration process may be considered to be integrated into the connection establishment process, as shown in FIG. 7.
  • the remote UE carries the relevant QoS parameters of the request bearer configuration in the sending connection setup request message, and after receiving the message, the relay node first completes the authorization authentication and access control for the remote UE, and if the authentication passes and allows access, the receiving is performed.
  • the relay node first determines whether the EPS bearer needs to be established with the network, and if necessary, initiates an EPS bearer resource allocation or a bearer resource modification process, requesting to establish/modify the EPS bearer; After the EPS bearer setup/modification is completed, the D2D bearer configuration is performed, and the bearer configuration setup information is carried in the connection setup response message and sent to the remote UE.
  • FIG. 8 is a structural diagram of a communication device between a remote user and a relay node in a device through system according to an embodiment of the present invention.
  • the device shown in Figure 8 includes:
  • the first sending module 801 is configured to: send connection establishment request information to the relay node;
  • the first receiving module 802 is configured to: receive a connection establishment response message sent by the relay node interest.
  • the device is located in a UE without a network coverage UE, a cell edge UE, or a network coverage and looking for a relay node to perform data forwarding.
  • the connection establishment request information includes any combination of the following fields: an identifier of the remote UE, a connection establishment cause, and a priority.
  • the identifier of the remote UE includes a user equipment identifier Prose UE ID of a proximity service allocated by the service function entity and/or a device pass-through D2D communication group identifier to which the remote UE belongs.
  • the priority in the connection establishment request includes a user equipment priority of the remote UE, a service priority, a priority of the communication group that the remote UE requests to communicate, or a priority of the D2D bearer that is requested to be established.
  • the remote UE sends the connection establishment request under any of the following conditions, including:
  • the remote UE has data to send to the network
  • the remote UE requests access to the network.
  • the connection establishment request information further includes one or more D2D bearer configuration request information.
  • the D2D bearer configuration request information includes any combination of the following fields: a quality of service level identifier QCI, an allocation and retention priority ARP, and UE-to-network indication information.
  • the D2D bearer configuration request information further includes an uplink/downlink/unilateral guaranteed bit rate and/or an uplink/downlink/unilateral maximum bit rate when the D2D bearer is a bearer of the guaranteed bit rate GBR.
  • connection establishment response information is connection establishment information or connection establishment rejection information, where the connection establishment information includes a UE identifier allocated by the relay node for the remote UE, and MAC layer configuration information, physical layer configuration information, and D2D bearer. At least one of the added configuration information; the connection establishment rejection information includes a rejection reason and/or a prohibition timing information, wherein the prohibition timing information is used to control the remote UE not to send a connection establishment before a preset prohibition timeout expires Request message.
  • the configuration information added by the D2D bearer includes any combination of the following fields: D2D bearer Identification, packet data convergence protocol PDCP layer configuration information, radio link control RLC layer configuration information, logical channel identification, logical channel configuration, aggregated maximum bit rate UE-AMBR of remote UE.
  • the reason for the rejection is any one of the following: the authorization authentication of the remote UE fails, the number of accessed remote UEs reaches a preset upper limit, no available resources, and the capability of the relay node is limited.
  • the device further comprises:
  • the processing module is configured to: if the connection establishment response information is connection establishment information, the remote UE completes the corresponding configuration according to the connection establishment information; if the connection establishment response information is connection establishment rejection information, the remote UE searches for The other relay node accesses, or waits for the prohibition timer to expire before sending the connection establishment request information to the relay node again.
  • the device further comprises:
  • the second receiving module is configured to: receive connection release information sent by the relay node; or
  • the second sending module is configured to: send connection release request information to the relay node;
  • the device sends connection release request information to the relay node under the following conditions, including:
  • the remote UE If the remote UE measures that the channel condition between the remote UE and the relay node is degraded, the remote UE requests to release the connection with the relay node; or
  • the remote UE If the remote UE no longer needs to remain connected to the network through the relay node, the remote UE requests to release the connection with the relay node.
  • the remote UE is connected to the relay UE, and the relay UE performs authorization authentication and access to the remote UE in a scenario where the network coverage is partially covered or there is no network coverage and the relay forwarding data is sought. Control so that the remote UE can remain connected to the network by relaying the UE.
  • FIG. 9 is a structural diagram of another communication device between a remote user and a relay node in a device through-through system according to an embodiment of the present invention.
  • the device shown in Figure 9 includes:
  • the third receiving module 901 is configured to: receive connection establishment request information;
  • the first determining module 902 is configured to: determine whether to accept the connection establishment request of the remote UE, and obtain a determination result;
  • the third sending module 903 is configured to: if the connection establishment request of the remote UE is accepted, send connection establishment information to the remote UE; otherwise, send connection establishment rejection information to the remote UE.
  • the first determining 901 is specifically configured to:
  • the relay node determines whether there is sufficient air interface resource to provide the remote UE with the service
  • the remote UE authorizes the authentication and the relay node has sufficient air interface resources to provide the remote UE with a service, the connection establishment request of the remote UE is accepted, otherwise the connection establishment request of the remote UE is rejected.
  • the first determining module 901 determines whether there are sufficient air interface resources to provide services for the remote UE, including:
  • the relay node determines, according to any information below, whether there are sufficient air interface resources to provide services for the remote UE, where the information includes the number of remote UEs that have been accessed, the transceiver capability of the relay node, and the middle Following the resource load of the node and the priority of the remote UE.
  • the connection establishment information includes at least one of a UE identifier allocated by the relay node for the remote UE, and MAC layer configuration information, physical layer configuration information, and configuration information added by the D2D bearer.
  • the connection establishment rejection information includes a rejection reason and/or a prohibition timing information, wherein the prohibition timing information is used to control the remote UE to fail to send a connection establishment request message before a preset prohibition timeout expires.
  • the configuration information added by the D2D bearer includes any combination of the following fields: D2D bearer identifier, packet data convergence protocol PDCP layer configuration information, radio link control RLC layer configuration information, logical channel identifier, logical channel configuration, and maximum aggregation of remote UEs. Bit rate UE-AMBR.
  • the reason for the rejection is any one of the following: the authorization authentication of the remote UE fails, the number of accessed remote UEs reaches a preset upper limit, and no available resources and The relay node capacity is limited.
  • the device further comprises:
  • the authentication module is configured to: perform authorization authentication on the remote UE with the neighboring service function entity according to the identifier of the remote UE in the connection establishment request information;
  • the obtaining module is configured to: obtain subscription information of the remote UE from the neighboring service function entity, where the subscription information of the remote UE includes an initial bearer-level quality of service QoS parameter and/or a downlink service flow template TFT information of the remote UE.
  • the initial bearer level QoS parameter includes any combination of the following information: a quality of service level QCI, an allocation and reservation priority ARP, an aggregate maximum bit rate UE-AMBR, and an access point aggregation maximum bit rate APN-AMBR.
  • the device further comprises:
  • a fourth sending module configured to: send connection release information to the remote UE; or
  • the fourth receiving module is configured to: receive connection release request information sent by the remote UE.
  • the device sends connection release information to the remote UE under the following conditions, including:
  • the relay node releases all connections with remote UEs
  • the relay node If the relay node measures that the channel condition between it and the remote UE is degraded, the relay node releases the connection with the remote UE;
  • the relay node When the relay node receives a connection establishment request of a remote UE with a high priority, if the number of remote UEs that have established a connection with the relay node reaches a preset upper limit or a resource load of the relay node If the overload occurs, the relay node releases the preemptable connection of the low-level remote UE.
  • the remote UE is connected to the relay UE, and the relay UE performs authorization authentication and access to the remote UE in a scenario where the network coverage is partially covered or the network coverage is not covered but the D2D communication cannot be directly performed. Control so that the remote UE can remain connected to the network by relaying the UE.
  • the embodiment of the invention further discloses a computer program, comprising program instructions, when the program instruction is executed by the terminal, so that the terminal can perform the communication method of any of the remote users and the relay node.
  • the embodiment of the invention also discloses a carrier carrying the computer program.
  • the embodiment of the invention further discloses a computer program, comprising program instructions, when the program instruction is executed by the relay node, so that the relay node can perform the communication method of any of the remote users and the relay node.
  • the embodiment of the invention also discloses a carrier carrying the computer program.
  • all or part of the steps of the above embodiments may also be implemented by using an integrated circuit. These steps may be separately fabricated into individual integrated circuit modules, or multiple modules or steps may be fabricated into a single integrated circuit module. achieve. Thus, the invention is not limited to any specific combination of hardware and software.
  • the devices/function modules/functional units in the above embodiments may be implemented by a general-purpose computing device, which may be centralized on a single computing device or distributed over a network of multiple computing devices.
  • each device/function module/functional unit in the above embodiment When each device/function module/functional unit in the above embodiment is implemented in the form of a software function module and sold or used as a stand-alone product, it can be stored in a computer readable storage medium.
  • the above mentioned computer readable storage medium may be a read only memory, a magnetic disk or an optical disk or the like.
  • the remote UE is connected to the relay UE, and the relay UE can establish a connection according to the quality of service requirement of the remote UE, thereby ensuring that the remote UE can communicate with the network through the relay UE. Therefore, the present invention has strong industrial applicability.

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Abstract

一种在设备直通系统中用户终端与中继节点的通信方法和装置；所述方法，包括：远程UE发送连接建立请求信息给中继节点；所述远程UE接收所述中继节点发送的连接建立响应信息。

Description

在设备直通系统中用户终端与中继节点的通信方法和装置 技术领域
本文涉及在设备直通系统中用户终端与中继节点的通信技术领域，尤其涉及一种在设备直通系统中用户终端与中继节点的通信方法和装置。
背景技术
随着无线多媒体业务的发展，人们对高数据速率和用户体验的需求日益增长，从而对传统蜂窝网络的系统容量和覆盖提出了较高要求。另一方面公共安全、社交网络、近距离数据共享、本地广告等应用场景使得人们对了解附近人或事物并与之通信(Proximity Services，邻近服务)的需求逐渐增加。传统的以基站为中心的蜂窝网络在高数据速率以及邻近服务的支持方面存在明显的局限性，在这种需求背景下，代表未来通信技术发展新方向的D2D(Device-to-Device，设备到设备)技术应运而生。D2D技术的应用，可以减轻蜂窝网络的负担、减少用户设备的电池功耗、提高数据速率，并改善网络基础设施的鲁棒性，很好地满足上述高数据速率业务和邻近服务的要求。目前D2D技术又称之为邻近服务(Proximity Services，ProSe)，单边链路(Sidelink，SL)。
D2D技术可以工作在授权频段或非授权频段，允许多个支持D2D功能的用户设备(即D2D用户设备，D2D User Equipment，D2D UE)在有网络基础设施或无网络基础设施的情况下进行直接发现/直接通信。D2D的应用场景主要有三种：
1)UE1和UE2在蜂窝网络的覆盖下进行数据交互，用户面数据不经过网络基础设施，如图1的模式1；
2)在弱/无覆盖区域的UE中继传输，如图1中的模式2，允许信号质量较差的UE4通过附近有网络覆盖的UE3与网络进行通信，能帮助运营商扩展覆盖、提高容量；
3)在发生地震或紧急情况，蜂窝网络不能正常工作的情况下，允许设备 间直接通信，如图1中的模式3，UE5，UE6和UE7间控制面和用户面都不经过网络基础设施而进行一跳或多跳的数据通信。
D2D技术通常包括D2D发现技术和D2D通信技术，其中，D2D发现技术是指用于判断/确定两个或多个D2D用户设备之间相互邻近(例如，在可进行D2D直接通信的范围之内)或者用于判断/确定第一用户设备邻近第二用户设备的技术。通常，D2D用户设备间可通过发送或接收发现信号/信息来发现对方；D2D通信技术是指D2D用户设备之间部分或全部通信数据可以不通过网络基础设施而直接进行通信的技术。
公共安全场景的通信要求具有很强的鲁棒性，能够在当前通信资源短缺或者拥塞或者网络基础设施瘫痪的情况下仍然能够最大限度的提供服务。因此公共安全要求D2D通信不仅在有网络覆盖场景下工作，也要求在部分覆盖以及无网络覆盖场景下工作。对于图1中的模式2对应的UE-to-Network Relay场景，所述UE3可以和网络侧使用相关LTE方式通讯，同时还可以作为中继和覆盖外(out of coverage)的终端(图示中的UE4)使用D2D方式通讯，这些方式包括D2D发现(Discovery)和/或D2D通讯(communication)。如果覆盖外或是信号较差的终端UE4通过覆盖内的终端UE3将数据发送给基站，那么我们称呼UE4为远程用户(Remote UE)，UE3为中继用户(Relay UE)。类似地，对于模式3对应的UE-to-UE Relay场景，UE6可在UE5和UE7之间转发数据包，则UE6可称之为中继用户，而UE5可称之为远程用户，UE7可称之为对端远程用户。
相关技术并没有对上述场景中，中继传输模式下远程D2D用户设备与中继设备连接建立过程给出系统完善的解决方案。
发明内容
本发明提供了一种在设备直通系统中远程用户与中继节点的通信方法，要解决的技术问题是为远程UE与中继UE进行连接建立及承载配置提供完善的解决方案。
为解决上述技术问题，采用如下技术方案：
一种在设备直通系统中远程用户与中继节点的通信方法，包括：
远程UE发送连接建立请求信息给中继节点；
所述远程UE接收所述中继节点发送的连接建立响应信息。
可选地，所述远程UE是无网络覆盖UE、小区边缘UE或有网络覆盖的且寻找中继节点进行数据转发的UE。
可选地，所述连接建立请求信息包括以下字段的任意组合：远程UE的标识、连接建立原因和优先级。
可选地，所述远程UE的标识包括：邻近服务功能实体分配的邻近服务的用户设备标识Prose UE ID和/或所述远程UE所属的设备到设备D2D通信组标识。
可选地，所述优先级包括：远程UE的用户设备优先级、业务优先级、远程UE请求通信的通信组的优先级、或请求建立的D2D承载的优先级。
可选地，所述远程UE发送连接建立请求信息给中继节点的步骤包括：
所述远程UE在如下任一条件下发送所述连接建立请求信息：
所述远程UE有数据要发送到网络；
所述远程UE请求接入网络。
可选地，所述连接建立请求信息中还包含一个或多个D2D承载配置请求信息。
可选地，所述D2D承载配置请求信息包括以下字段的任意组合：服务质量等级标识QCI、分配和保留优先级ARP和UE-to-network指示信息。
可选地，在D2D承载为保证比特率GBR的承载时，所述D2D承载配置请求信息还包括上行/下行/单边保证比特率和/或上行/下行/单边最大比特率。
可选地，所述连接建立响应信息为连接建立接受信息或连接建立拒绝信息；
其中，所述连接建立接受信息包括：中继节点为远程UE分配的UE标识，以及MAC层配置信息，物理层配置信息和D2D承载增加的配置信息中 的至少一个；
所述连接建立拒绝信息包括：拒绝原因和/或禁止定时信息，其中所述禁止定时信息用于控制所述远程UE在预先设置的禁止时间超时之前不能发送连接建立请求信息。
可选地，所述D2D承载增加的配置信息包括以下字段的任意组合：D2D承载标识、分组数据汇聚协议PDCP层配置信息、无线链路控制RLC层配置信息、逻辑信道标识、逻辑信道配置、远程UE的聚合最大比特速率UE-AMBR。
可选地，所述拒绝原因是以下任意之一：所述远程UE的授权认证未通过、已接入的远程UE的数量达到预先设置的数量上限、没有可用资源和所述中继节点能力受限。
可选地，所述远程UE接收所述中继节点发送的连接建立响应信息的步骤之后，所述方法还包括：
如果所述连接建立响应信息为连接建立接受信息，则所述远程UE根据连接建立接受信息完成相应配置；
如果所述连接建立响应信息为连接建立拒绝信息，则所述远程UE寻找其它中继节点接入，或等待禁止定时器超时之后再次给所述中继节点发送连接建立请求信息。
可选地，所述远程UE接收所述中继节点发送的连接建立响应信息的步骤之后，所述方法还包括：
所述远程UE接收所述中继节点发送的连接释放信息；或者，
所述远程UE发送连接释放请求信息给所述中继节点。
可选地，所述远程UE发送连接释放请求信息给所述中继节点的步骤包括：
所述远程UE在如下条件下发送连接释放请求信息给所述中继节点：
如果所述远程UE测量到所述远程UE与中继节点之间信道状况变差，则所述远程UE请求释放与中继节点的连接；或者，
如果所述远程UE不再需要通过中继节点与网络保持连接，则所述远程UE请求释放与中继节点的连接。
一种在设备直通系统中远程用户与中继节点的通信方法，包括：
中继节点接收远程UE发来的连接建立请求信息；
所述中继节点判断是否接受所述远程UE的连接建立请求；
如果所述中继节点接受所述远程UE的所述连接建立请求，则所述中继节点发送连接建立接受信息给所述远程UE；否则，所述中继节点发送连接建立拒绝信息给所述远程UE。
可选地，所述中继节点判断是否接受远程UE的连接建立请求的步骤包括：
所述中继节点判断所述远程UE是否授权认证通过；若授权认证通过，所述中继节点判断是否有足够的空口资源为所述远程UE提供服务；
如果所述远程UE授权认证通过且所述中继节点有足够的空口资源为所述远程UE提供服务，则所述中继节点接受所述远程UE的连接建立请求，否则所述中继节点拒绝所述远程UE的连接建立请求。
可选地，所述中继节点判断是否有足够的空口资源为所述远程UE提供服务的步骤包括：
所述中继节点根据如下任意信息，判断是否有足够的空口资源为所述远程UE提供服务：已接入的远程UE的数量、所述中继节点的收发能力、所述中继节点的资源负荷和所述远程UE的优先级。
可选地，所述连接建立接受信息包括：中继节点为远程UE分配的UE标识、媒体接入控制MAC层配置信息，物理层配置信息和D2D承载增加的配置信息中的至少一个；
所述连接建立拒绝信息包括：拒绝原因和/或禁止定时信息，其中所述禁止定时信息用于控制所述远程UE在预先设置的禁止时间超时之前不能发送连接建立请求信息。
可选地，所述D2D承载增加的配置信息包括以下字段的任意组合：D2D承载标识、分组数据汇聚协议PDCP层配置信息、无线链路控制RLC层配置信息、逻辑信道标识、逻辑信道配置和远程UE的聚合最大比特速率UE-AMBR。
可选地，所述拒绝原因包括以下任意信息之一：所述远程UE的授权认证未通过、已接入的远程UE的数量达到预先设置的数量上限、没有可用资源和所述中继节点能力受限。
可选地，所述中继节点接收远程UE发来的连接建立请求信息的步骤之后，所述方法还包括：
所述中继节点根据所述连接建立请求信息中的远程UE的标识，与邻近服务功能实体完成对所述远程UE的授权认证；
所述中继节点从所述邻近服务功能实体获取所述远程UE的订阅信息，其中所述远程UE的订阅信息包括所述远程UE的初始承载级服务质量QoS参数和/或下行业务流模板TFT信息。
可选地，所述初始承载级QoS参数包括如下信息的任意组合：服务质量等级QCI、分配和保留优先级ARP、聚合最大比特速率UE-AMBR和接入点聚合最大比特速率APN-AMBR。
可选地，所述中继节点发送连接建立接受信息给所述远程UE的步骤之后，所述方法还包括：
所述中继节点发送连接释放信息给所述远程UE；或者，
所述中继节点接收所述远程UE发送的连接释放请求信息。
可选地，所述中继节点发送连接释放信息给所述远程UE的步骤包括：
所述中继节点在如下条件下发送所述连接释放信息给所述远程UE：
如果所述中继节点不再继续作为中继节点工作，则所述中继节点释放所有与所述远程UE的连接；
如果所述中继节点测量到其与所述远程UE之间信道状况变差，所述中继节点释放与所述远程UE的连接；
所述中继节点在收到优先级为高级别的远程UE的连接建立请求时，如果与所述中继节点已建立连接的远程UE的数量达到预先设置的数量上限或所述中继节点的资源负荷超载，则所述中继节点释放可抢占的优先级为低级别的远程UE的连接。
一种在设备直通系统中远程用户与中继节点的通信装置，位于远程UE中，包括：
第一发送模块，设置成：发送连接建立请求信息给中继节点；
第一接收模块，设置成：接收所述中继节点发送的连接建立响应信息。
可选地，所述装置位于无网络覆盖UE、小区边缘UE或有网络覆盖的且寻找中继节点进行数据转发的UE。
可选地，所述连接建立请求信息包括以下字段的任意组合：远程UE的标识、连接建立原因和优先级。
可选地，所述远程UE的标识包括：邻近服务功能实体分配的邻近服务的用户设备标识Prose UE ID和/或所述远程UE所属的设备直通D2D通信组标识。
可选地，所述优先级包括：远程UE的用户设备优先级、业务优先级、远程UE请求通信的通信组的优先级、或请求建立的D2D承载的优先级。
可选地，所述第一发送模块设置成按照如下方式发送连接建立请求信息给中继节点：
在如下任一条件下发送所述连接建立请求信息：
所述远程UE有数据要发送到网络；
所述远程UE请求接入网络。
可选地，所述连接建立请求信息中还包含一个或多个D2D承载配置请求信息。
可选地，所述D2D承载配置请求信息包括以下字段的任意组合：服务质量等级标识QCI、分配和保留优先级ARP和UE-to-network指示信息。
可选地，在D2D承载为保证比特率GBR的承载时，所述D2D承载配置请求信息还包括上行/下行/单边保证比特率和/或上行/下行/单边最大比特率。
可选地，所述连接建立响应信息为连接建立接受信息或连接建立拒绝信息；
其中，所述连接建立接受信息包括：中继节点为远程UE分配的UE标识、媒体接入控制MAC层配置信息，物理层配置信息和D2D承载增加的配置信息中的至少一个；
所述连接建立拒绝信息包括：拒绝原因和/或禁止定时信息，其中所述禁止定时信息用于控制所述远程UE在预先设置的禁止时间超时之前不能发送连接建立请求消息。
可选地，所述D2D承载增加的配置信息包括以下字段的任意组合：D2D承载标识、分组数据汇聚协议PDCP层配置信息、无线链路控制RLC层配置信息、逻辑信道标识、逻辑信道配置和远程UE的聚合最大比特速率UE-AMBR。
可选地，所述拒绝原因包括以下信息任意之一：所述远程UE的授权认证未通过、已接入的远程UE的数量达到预先设置的数量上限、没有可用资源和所述中继节点能力受限。
可选地，所述装置还包括：
处理模块，设置成：如果所述连接建立响应信息为连接建立接受信息，则根据连接建立接受信息完成相应配置；如果所述连接建立响应信息为连接建立拒绝信息，则寻找其它中继节点接入，或等待禁止定时器超时之后再次给所述中继节点发送连接建立请求信息。
可选地，所述装置还包括：
第二接收模块，设置成：接收所述中继节点发送的连接释放信息；或者，
第二发送模块，设置成：发送连接释放请求信息给所述中继节点。
可选地，所述第二发送模块设置成按照如下方式发送所述连接释放请求 信息给所述中继节点：
在如下条件下发送所述连接释放请求信息给所述中继节点：
如果测量到所述远程UE与中继节点之间信道状况变差，则请求释放与中继节点的连接；或者，
如果所述远程UE不再需要通过中继节点与网络保持连接，则请求释放与中继节点的连接。
一种在设备直通系统中远程用户与中继节点的通信装置，位于中继节点上，包括：
第三接收模块，设置成：接收连接建立请求信息；
第一判断模块，设置成：判断是否接受远程UE的连接建立请求；
第三发送模块，设置成：如果接受所述远程UE的连接建立请求，则发送连接建立接受信息给所述远程UE；否则发送连接建立拒绝信息给所述远程UE。
可选地，所述第一判断模块设置成按照如下方式判断是否接受远程UE的连接建立请求：
判断所述远程UE是否授权认证通过；若授权认证通过，判断所述中继节点是否有足够的空口资源为所述远程UE提供服务；
如果远程UE授权认证通过且所述中继节点有足够的空口资源为所述远程UE提供服务，则接受所述远程UE的连接建立请求，否则拒绝所述远程UE的连接建立请求。
可选地，所述第一判断模块设置成按照如下方式判断是否有足够的空口资源为所述远程UE提供服务：
根据如下任意信息，判断是否有足够的空口资源为所述远程UE提供服务：已接入的远程UE的数量、所述中继节点的收发能力、所述中继节点的资源负荷和所述远程UE的优先级。
可选地，所述连接建立接受信息包括：中继节点为远程UE分配的UE 标识、媒体接入控制MAC层配置信息、物理层配置信息和D2D承载增加的配置信息中的至少一个；
所述连接建立拒绝信息包括：拒绝原因和/或禁止定时信息，其中所述禁止定时信息用于控制所述远程UE在预先设置的禁止时间超时之前不能发送连接建立请求消息。
可选地，所述D2D承载增加的配置信息包括以下字段的任意组合：D2D承载标识、分组数据汇聚协议PDCP层配置信息、无线链路控制RLC层配置信息、逻辑信道标识、逻辑信道配置、远程UE的聚合最大比特速率UE-AMBR。
可选地，所述拒绝原因包括以下任意信息之一：所述远程UE的授权认证未通过、已接入的远程UE的数量达到预先设置的数量上限、没有可用资源和所述中继节点能力受限。
可选地，所述装置还包括：
认证模块，设置成：根据所述连接建立请求信息中的远程UE的标识，与邻近服务功能实体完成对所述远程UE的授权认证；
获取模块，设置成：从所述邻近服务功能实体获取所述远程UE的订阅信息，其中所述远程UE的订阅信息包括所述远程UE的初始承载级服务质量QoS参数和/或下行业务流模板TFT信息。
可选地，所述初始承载级QoS参数包括如下信息的任意组合：服务质量等级QCI、分配和保留优先级ARP、聚合最大比特速率UE-AMBR和接入点聚合最大比特速率APN-AMBR。
可选地，所述装置还包括：
第四发送模块，设置成：发送连接释放信息给所述远程UE；或者，
第四接收模块，设置成：接收所述远程UE发送的连接释放请求信息。
可选地，所述第四发送模块设置成按照如下方式发送连接释放信息给所述远程UE：
在如下条件下发送所述连接释放信息给所述远程UE：
如果所述中继节点不再继续作为中继节点工作，则释放所有与远程UE的连接；
如果中继节点测量到其与所述远程UE之间信道状况变差，释放与所述远程UE的连接；
在收到优先级为高级别的远程UE的连接建立请求时，如果与所述中继节点已建立连接的远程UE的数量达到预先设置的数量上限或所述中继节点的资源负荷超载，则释放可抢占的优先级为低级别的远程UE的连接。
本发明提供实施例，在无网络覆盖的场景下，远程UE连接到中继UE，并且中继UE可以根据远程UE的服务质量要求建立连接，进而保证远程UE能够通过中继UE与网络进行通信。
附图概述
图1为相关技术中设备直通系统发现/通信场景示意图；
图2为本发明实施例提供的一种在设备直通系统中用户终端与中继节点的通信方法的流程图；
图3为本发明实施例提供的另一种在设备直通系统中用户终端与中继节点的通信方法的流程图；
图4为本发明实例1提供的远程UE与中继节点连接建立流程图；
图5为本发明实例1提供的远程UE与中继节点连接建立失败流程图；
图6为本发明实例2提供的远程UE与中继节点连接释放流程图；
图7为本发明实例3提供的远程UE与中继节点连接建立流程图；
图8为本发明实施例提供的一种在设备直通系统中用户终端与中继节点的通信装置的结构图；
图9为本发明实施例提供的另一种在设备直通系统中用户终端与中继节点的通信装置的结构图。
本发明的较佳实施方式
以下是对本文详细描述的主题的概述。本概述并非是为了限制权利要求的保护范围。
下面将结合附图及具体实施例对本发明作进一步的详细描述。需要说明的是，在不冲突的情况下，本申请中的实施例及实施例中的特征可以相互任意组合。
图2为本发明实施例提供的一种在设备直通系统中，也就是D2D通信系统中远程用户与中继节点的通信方法的流程图。图2所示方法包括：
步骤201、远程UE发送连接建立请求信息给中继节点；
此处及以后的中继节点就是背景技术部分提到的中继用户。
步骤202、所述远程UE接收所述中继节点发送的连接建立响应信息。
本发明实施例提供的方法，在部分覆盖或无网络覆盖或有网络覆盖且寻找中继转发数据的场景下，远程UE连接到中继UE，中继UE对远程UE进行授权认证和做接入控制，从而使得远程UE能够通过中继UE与网络保持连接。
图3为本发明实施例提供的另一种在设备直通系统中远程用户与中继节点的通信方法的流程图。图3所示方法包括：
步骤301、中继节点接收连接建立请求消息信息；
步骤302、所述中继节点判断是否接受远程UE的连接建立请求，得到判断结果；
步骤303、如果所述中继节点接受所述远程UE的连接建立请求，则中继节点发送连接建立信息给所述远程UE；否则所述中继节点发送连接建立拒绝信息给所述远程UE。
本发明实施例提供的方法，在部分覆盖或无网络覆盖或有网络覆盖且寻找中继转发数据的场景下，远程UE连接到中继UE，中继UE对远程UE进行授权认证和做接入控制，从而使得远程UE能够通过中继UE与网络保持连接。
下面对上述方法作进一步说明：
首先对远程UE侧的方法流程进行说明：
所述远程UE是无网络覆盖UE、小区边缘UE或有网络覆盖的且寻找中继节点进行数据转发的UE。
其中，所述连接建立请求信息包括以下字段的任意组合：远程UE的标识、连接建立原因和优先级。
具体的，对连接建立请求信息的部分字段进行说明：
所述远程UE的标识包括邻近服务功能实体Prose function分配的Prose UE ID和/或所述远程UE所属的设备直通D2D通信组标识。
所述连接建立请求中的优先级包括远程UE的用户设备优先级、业务优先级、远程UE请求通信的通信组的优先级、或请求建立的D2D承载的优先级。
所述远程UE在如下任一条件下发送所述连接建立请求，包括：
所述远程UE有数据要发送到网络；
所述远程UE请求接入网络。
具体的，在远程UE有上述需求时，可以发送上述连接建立请求。
需要说明的是，本文中的高级别或者低级别，可以是为每个UE预先设置的优先级，也可以是将该UE的某一优先级的数值与该优先级对应的阈值比较后得到的结果，确定的高级别或低级别，例如，当该UE的某一优先级的数值大于或等于该优先级的阈值时，从而根据该信息确定该UE的优先级为高级别，否则，确定该UE的优先级为低级别。
其中，所述连接建立请求信息中还包含一个或多个D2D承载配置请求信息。
具体的，如果连接建立和D2D承载建立过程是同时进行的，为了减少信息交互次数，提高信息处理效率，在实现连接建立过程中，同时完成D2D承载建立的协商，简化信息交互流程；当然，在实际应用中，连接建立过程与D2D承载的建立过程也可以分开执行，即两个流程是相互独立的。
其中，所述D2D承载配置请求信息包括以下字段的任意组合：服务质量等级标识QCI、分配和保留优先级ARP和UE-to-network指示信息。
其中，UE-to-network指示信息用于为了区分与UE-to-UE的流量、纯粹的远程UE到中继UE的流量，为了后续中继EPS承载的控制。
其中，在所述D2D承载为保证比特率GBR的承载时，所述D2D承载配置请求信息还包括上行/下行/单边保证比特率和/或上行/下行/单边最大比特率。
具体的，为了保证D2D承载的传输能力能够更好的为远程UE提供服务，通过将上述信息发送给中继节点，方便中继节点建立有利于远程UE传输数据的承载。
其中，所述连接建立响应信息为连接建立信息或连接建立拒绝信息，其中，所述连接建立信息包括中继节点为远程UE分配的UE标识，以及MAC层配置信息，物理层配置信息和D2D承载增加的配置信息中的至少一个；所述连接建立拒绝信息包括拒绝原因和/或禁止定时信息，其中所述禁止定时信息用于控制所述远程UE在预先设置的禁止时间超时之前不能发送连接建立请求信息。
其中，所述D2D承载增加的配置信息包括以下字段的任意组合：D2D承载标识、分组数据汇聚协议PDCP层配置信息、无线链路控制RLC层配置信息、逻辑信道标识、逻辑信道配置、远程UE的聚合最大比特速率UE-AMBR。
其中，所述拒绝原因是以下任意之一：所述远程UE的授权认证未通过、已接入的远程UE的数量达到预先设置的数量上限、没有可用资源和所述中继节点能力受限。
其中，所述远程UE接收所述中继节点发送的连接建立响应信息之后，所述方法还包括：
如果所述连接建立响应信息为连接建立配置信息，则所述远程UE根据配置信息完成相应配置；
如果所述连接建立响应信息为连接建立拒绝信息，则所述远程UE寻找 其它中继节点接入，或等待禁止定时器超时之后再次给所述中继节点发送连接建立请求信息。
其中，所述远程UE接收所述中继节点发送的连接建立响应信息之后，所述方法还包括：
所述远程UE接收所述中继节点发送的连接释放信息；或者，
所述远程UE发送连接释放请求信息给所述中继节点。
具体的，远程UE可以通过发送连接释放请求信息触发连接的释放操作，或者，由中继节点主动发起释放操作，远程UE接收中继节点的释放信息，保证资源的及时释放，保证资源的合理利用。
其中，所述远程UE在如下条件下发送连接释放请求信息给所述中继节点，包括：
如果所述远程UE测量到所述远程UE与中继节点之间信道状况变差，则所述远程UE请求释放与中继节点的连接；或者，
如果所述远程UE不再需要通过中继节点与网络保持连接，则所述远程UE请求释放与中继节点的连接。
其中信号变差可以通过如下方式来判断，如测量结果小于给定门限，和或远程UE重选其他的中继节点。
下面对中继节点(即中继UE)进行说明：
其中，所述中继节点判断是否接受远程UE的连接建立请求，得到判断结果，包括：
所述中继节点判断远程UE是否授权认证通过；若授权认证通过，所述中继节点判断是否有足够的空口资源为所述远程UE提供服务；
如果远程UE授权认证通过且中继节点有足够的空口资源为所述远程UE提供服务，则中继节点接受远程UE的连接建立请求，否则中继节点拒绝远程UE的连接建立请求。
具体的，通过判断远程UE是否授权认证，确定远程UE的合法性；判断本地是否有资源能够为远程UE提供服务，可以确定是否可以为远程UE提供 服务，通过上述判断操作，可以保证连接的安全和稳定性。
其中，所述中继节点判断是否有足够的空口资源为所述远程UE提供服务，包括：
所述中继节点根据如下任意信息，判断是否有足够的空口资源为所述远程UE提供服务，所述信息包括已接入的远程UE的数量、所述中继节点的收发能力、所述中继节点的资源负荷和所述远程UE的优先级。
在本发明实施例的一种实施方式中，所述连接建立信息包括中继节点为远程UE分配的UE标识、媒体接入控制MAC层配置信息，物理层配置信息和D2D承载增加的配置信息中的至少一个；所述连接建立拒绝信息包括拒绝原因和/或禁止定时信息，其中所述禁止定时信息用于控制所述远程UE在预先设置的禁止时间超时之前不能发送连接建立请求信息。
具体的，其中中继节点为远程UE分配的UE标识，该标识在该中继节点内是唯一可辨识的，用于保证remote UE与relay UE通信时单播的唯一性。
其中，D2D承载增加的配置信息包括以下字段的任意组合：D2D承载标识、分组数据汇聚协议PDCP层配置信息、无线链路控制RLC层配置信息、逻辑信道标识、逻辑信道配置和远程UE的聚合最大比特速率UE-AMBR。
其中，所述拒绝原因是以下任意之一：所述远程UE的授权认证未通过、已接入的远程UE的数量达到预先设置的数量上限、没有可用资源和所述中继节点能力受限。
具体的，通过告知远程UE本次连接建立请求拒绝的原因，方便远程UE确定是否再次发起请求，有效控制远程UE和中继节点的交互次数，减少资源的浪费。
其中，所述中继节点接收连接建立请求信息之后，所述方法还包括：
中继节点根据连接建立请求信息中的远程UE的标识，与邻近服务功能实体Prose function完成对远程UE的授权认证；
中继节点从邻近服务功能实体获取远程UE的订阅信息，其中所述远程UE的订阅信息包括所述远程UE的初始承载级服务质量QoS参数和/或下行业务流模板TFT信息。
其中，所述初始承载级QoS参数包括如下信息的任意组合：服务质量等级QCI、分配和保留优先级ARP、聚合最大比特速率UE-AMBR和接入点聚合最大比特速率APN-AMBR。
其中，所述中继节点发送连接建立信息给所述远程UE之后，所述方法还包括：
所述中继节点发送连接释放信息给所述远程UE；或者，
所述中继节点接收远程UE发送的连接释放请求信息。
其中，所述中继节点在如下条件下发送连接释放信息给所述远程UE，包括：
如果所述中继节点不再继续作为中继节点工作，则所述中继节点释放所有与远程UE的连接；
如果中继节点测量到其与远程UE之间信道状况变差，所述中继节点释放与远程UE的连接；
中继节点在收到优先级为高级别的远程UE的连接建立请求时，如果与所述中继节点已建立连接的远程UE的数量达到预先设置的数量上限或所述中继节点的资源负荷超载，则所述中继节点释放可抢占的优先级为低级别的远程UE的连接。
具体的，中继节点通过上述条件来控制连接的释放，保证资源的合理利用，提高资源的利用率。
下面给出远程D2D UE与中继D2D UE的连接建立，连接释放过程。以下通过实例1至实例3详细阐述。
实例1
在公共安全场景，Officer A，B使用具备D2D功能的公共安全UE1，UE2。Officer A，B都订阅了公共安全服务。在救援地点，UE1处于有网络覆盖状态，而UE2处于无网络覆盖状态。UE2想要与网络进行通信，寻找到UE1可作为中继节点或接收到UE1广播的可作为中继节点的广告，UE2尝试与UE1建立连接，通过中继节点UE1(UE-to-network Relay)为其转发数据与网络进行通信。
UE2发送中继连接建立请求消息给中继节点UE1，如图4所示，中继连接建立请求消息中可包含远程UE2的标识，连接建立原因，优先级等信息。其中，远程UE2的标识可以是Prose function分配的Prose UE ID和或远程UE2所属的D2D通信组标识；连接建立原因远程可以是UE有数据要发送到网络，远程UE有数据要发送到目标UE，远程UE要与网络保持连接，或高优先级接入；优先级可以是远程UE用户设备优先级，业务优先级，远程UE希望通信的通信组的优先级，或希望建立的D2D承载的优先级。
UE1接收UE2发送的中继连接建立请求消息，根据其中UE2的标识信息与Prose function交互完成对UE2的授权认证。如果UE2无法通过认证，则UE1发送连接建立拒绝消息给UE2，其中拒绝原因为认证未通过。如果UE2通过授权认证，UE1根据已与其建立连接的远程UE的数量，其自身收发能力，资源负荷状况，优先级等对UE2做接入控制。如果UE1允许UE2接入，则发送连接建立接收消息给UE2，否则，发送连接建立拒绝消息给UE1，可携带拒绝原因，如图5所示。其中，拒绝原因可以是已接入的远程UE的数量达到上限，没有可用资源，中继节点能力受限。可选的，连接建立拒绝消息中可以携带一个禁止定时器，要求远程UE2在禁止定时器超时之前不要给该中继节点UE1重复发送连接建立请求消息。此外，在UE1与Prose function交互过程中，UE1还可以从Prose function获得UE2的订阅信息，如承载级QoS参数，UE聚合最大比特速率等。
在连接建立过程中，除了完成对远程UE2的授权认证、接入控制外，还可包含安全密钥的配置。可以考虑在连接建立阶段动态配置安全密钥，如在连接建立交互消息中携带远程UE2与Prose function交互的NAS PDU，使得UE2可以获得空口密钥。相应地，中继UE1也可以在与Prose function交互的过程中获得与UE2进行空口传输对应的空口加解密的密钥。
实例2
如果出现下面的情况，中继节点UE1会释放与远程UE2的连接：中继节点因电量低、测量到其与远程UE之间的信道状况变差等因素不再适合继续作为中继节点；中继节点收到高优先级的无覆盖UE的连接建立请求，而此时与该中继节点已建立连接的无覆盖UE的数量达到上限或中继节点资源负 荷较高，中继节点会释放与低优先级无覆盖UE的连接。此外，也可以由远程UE发起连接释放请求，中继节点收到连接释放请求后，释放与该远程UE的连接。如果远程UE测量到其与中继节点之间的信道状况变差，或者远程UE不再需要通过中继节点与网络保持连接，远程UE会主动发送连接释放请求给中继节点。具体流程如图6所示。
实例3
在公共安全场景，Officer A，B使用具备D2D功能的公共安全UE1，UE2。Officer A，B都订阅了公共安全服务。在救援地点，UE1处于有网络覆盖状态，而UE2处于无网络覆盖状态。UE2想要与网络进行通信，寻找到UE1可作为中继节点或接收到UE1广播的可作为中继节点的广告，UE2尝试与UE1建立连接并完成承载配置，通过中继节点UE1(UE-to-network Relay)为其转发数据与网络进行通信。
除了远程UE2与中继节点UE1的连接建立过程与它们之间的D2D数据承载配置过程独立进行的场景，也可以考虑将承载配置过程结合到连接建立过程中，具体流程如图7所示。远程UE在发送连接建立请求消息中携带请求承载配置的相关QoS参数，中继节点收到该消息后首先完成对远程UE的授权认证与接入控制，如果认证通过且允许接入，则进行接纳控制，中继节点先确定与网络是否需要建立EPS承载，若需要则发起EPS承载资源分配(bearer resource allocation)或承载资源修改(bearer resource modification)过程，请求建立/修改EPS承载；若不需要或已完成EPS承载建立/修改，则进行D2D承载配置，在连接建立响应消息中携带承载配置建立信息发送给远程UE。
图8为本发明实施例提供的一种在设备直通系统中远程用户与中继节点的通信装置的结构图。图8所示装置包括：
第一发送模块801，设置成：发送连接建立请求信息给中继节点；
第一接收模块802，设置成：接收所述中继节点发送的连接建立响应信 息。
其中，所述装置位于无网络覆盖UE、小区边缘UE或有网络覆盖的且寻找中继节点进行数据转发的UE。
其中，所述连接建立请求信息包括以下字段的任意组合：远程UE的标识、连接建立原因和优先级。
其中，所述远程UE的标识包括邻近服务功能实体分配的邻近服务的用户设备标识Prose UE ID和/或所述远程UE所属的设备直通D2D通信组标识。
其中，所述连接建立请求中的优先级包括远程UE的用户设备优先级、业务优先级、远程UE请求通信的通信组的优先级、或请求建立的D2D承载的优先级。
其中，所述远程UE在如下任一条件下发送所述连接建立请求，包括：
所述远程UE有数据要发送到网络；
所述远程UE请求接入网络。
其中，所述连接建立请求信息中还包含一个或多个D2D承载配置请求信息。
其中，所述D2D承载配置请求信息包括以下字段的任意组合：服务质量等级标识QCI、分配和保留优先级ARP和UE-to-network指示信息。
其中，在所述D2D承载为保证比特率GBR的承载时，所述D2D承载配置请求信息还包括上行/下行/单边保证比特率和/或上行/下行/单边最大比特率。
其中，所述连接建立响应信息为连接建立信息或连接建立拒绝信息，其中，所述连接建立信息包括中继节点为远程UE分配的UE标识，以及MAC层配置信息，物理层配置信息和D2D承载增加的配置信息中的至少一个；所述连接建立拒绝信息包括拒绝原因和/或禁止定时信息，其中所述禁止定时信息用于控制所述远程UE在预先设置的禁止时间超时之前不能发送连接建立请求消息。
其中，D2D承载增加的配置信息包括以下字段的任意组合：D2D承载标 识、分组数据汇聚协议PDCP层配置信息、无线链路控制RLC层配置信息、逻辑信道标识、逻辑信道配置、远程UE的聚合最大比特速率UE-AMBR。
其中，所述拒绝原因是以下任意之一：所述远程UE的授权认证未通过、已接入的远程UE的数量达到预先设置的数量上限、没有可用资源和所述中继节点能力受限。
其中，所述装置还包括：
处理模块，设置成：如果所述连接建立响应信息为连接建立信息，则所述远程UE根据连接建立信息完成相应配置；如果所述连接建立响应信息为连接建立拒绝信息，则所述远程UE寻找其它中继节点接入，或等待禁止定时器超时之后再次给所述中继节点发送连接建立请求信息。
其中，所述装置还包括：
第二接收模块，设置成：接收所述中继节点发送的连接释放信息；或者，
第二发送模块，设置成：发送连接释放请求信息给所述中继节点；
其中，所述装置在如下条件下发送连接释放请求信息给所述中继节点，包括：
如果所述远程UE测量到所述远程UE与中继节点之间信道状况变差，则所述远程UE请求释放与中继节点的连接；或者，
如果所述远程UE不再需要通过中继节点与网络保持连接，则所述远程UE请求释放与中继节点的连接。
本发明实施例提供的装置，在部分覆盖或无网络覆盖或有网络覆盖且寻找中继转发数据的场景下，远程UE连接到中继UE，中继UE对远程UE进行授权认证和做接入控制，从而使得远程UE能够通过中继UE与网络保持连接。
图9为本发明实施例提供的另一种在设备直通系统中远程用户与中继节点的通信装置的结构图。图9所示装置，包括：
第三接收模块901设置成：接收连接建立请求信息；
第一判断模块902，设置成：判断是否接受远程UE的连接建立请求，得到判断结果；
第三发送模块903，设置成：如果接受所述远程UE的连接建立请求，则发送连接建立信息给所述远程UE；否则发送连接建立拒绝信息给所述远程UE。
其中，所述第一判断901具体设置成：
判断远程UE是否授权认证通过；若授权认证通过，所述中继节点判断是否有足够的空口资源为所述远程UE提供服务；
如果远程UE授权认证通过和中继节点有足够的空口资源为所述远程UE提供服务，则接受远程UE的连接建立请求，否则拒绝远程UE的连接建立请求。
其中，所述第一判断模块901判断是否有足够的空口资源为所述远程UE提供服务，包括：
所述中继节点根据如下任意信息，判断是否有足够的空口资源为所述远程UE提供服务，所述信息包括已接入的远程UE的数量、所述中继节点的收发能力、所述中继节点的资源负荷和所述远程UE的优先级。
其中，所述连接建立信息包括中继节点为远程UE分配的UE标识，以及MAC层配置信息，物理层配置信息和D2D承载增加的配置信息中的至少一个；
所述连接建立拒绝信息包括拒绝原因和/或禁止定时信息，其中所述禁止定时信息用于控制所述远程UE在预先设置的禁止时间超时之前不能发送连接建立请求消息。
其中，D2D承载增加的配置信息包括以下字段的任意组合：D2D承载标识、分组数据汇聚协议PDCP层配置信息、无线链路控制RLC层配置信息、逻辑信道标识、逻辑信道配置、远程UE的聚合最大比特速率UE-AMBR。
其中，所述拒绝原因是以下任意之一：所述远程UE的授权认证未通过、已接入的远程UE的数量达到预先设置的数量上限、没有可用资源和所 述中继节点能力受限。
其中，所述装置还包括：
认证模块，设置成：根据连接建立请求信息中的远程UE的标识，与邻近服务功能实体完成对远程UE的授权认证；
获取模块，设置成：从邻近服务功能实体获取远程UE的订阅信息，其中所述远程UE的订阅信息包括所述远程UE的初始承载级服务质量QoS参数和/或下行业务流模板TFT信息。
其中，所述初始承载级QoS参数包括如下信息的任意组合：服务质量等级QCI、分配和保留优先级ARP、聚合最大比特速率UE-AMBR和接入点聚合最大比特速率APN-AMBR。
其中，所述装置还包括：
第四发送模块，设置成：发送连接释放信息给所述远程UE；或者，
第四接收模块，设置成：接收远程UE发送的连接释放请求信息。
其中，所述装置在如下条件下发送连接释放信息给所述远程UE，包括：
如果所述中继节点不再继续作为中继节点工作，则所述中继节点释放所有与远程UE的连接；
如果中继节点测量到其与远程UE之间信道状况变差，所述中继节点释放与远程UE的连接；
中继节点在收到优先级为高级别的远程UE的连接建立请求时，如果与所述中继节点已建立连接的远程UE的数量达到预先设置的数量上限或所述中继节点的资源负荷超载，则所述中继节点释放可抢占的优先级为低级别的远程UE的连接。
本发明实施例提供的装置，在部分覆盖或无网络覆盖或有网络覆盖但不能直接进行D2D通信的场景下，远程UE连接到中继UE，中继UE对远程UE进行授权认证和做接入控制，从而使得远程UE能够通过中继UE与网络保持连接。
本发明实施例还公开了一种计算机程序，包括程序指令，当该程序指令被终端执行时，使得该终端可执行上述任意的远程用户与中继节点的通信方法。
本发明实施例还公开了一种载有所述的计算机程序的载体。
本发明实施例还公开了一种计算机程序，包括程序指令，当该程序指令被中继节点执行时，使得该中继节点可执行上述任意的远程用户与中继节点的通信方法。
本发明实施例还公开了一种载有所述的计算机程序的载体。
在阅读并理解了附图和详细描述后，可以明白其他方面。
本领域普通技术人员可以理解上述实施例的全部或部分步骤可以使用计算机程序流程来实现，所述计算机程序可以存储于一计算机可读存储介质中，所述计算机程序在相应的硬件平台上(如系统、设备、装置、器件等)执行，在执行时，包括方法实施例的步骤之一或其组合。
可选地，上述实施例的全部或部分步骤也可以使用集成电路来实现，这些步骤可以被分别制作成一个个集成电路模块，或者将它们中的多个模块或步骤制作成单个集成电路模块来实现。这样，本发明不限制于任何特定的硬件和软件结合。
上述实施例中的各装置/功能模块/功能单元可以采用通用的计算装置来实现，它们可以集中在单个的计算装置上，也可以分布在多个计算装置所组成的网络上。
上述实施例中的各装置/功能模块/功能单元以软件功能模块的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。上述提到的计算机可读取存储介质可以是只读存储器，磁盘或光盘等。
以上所述，仅为本发明的具体实施方式，但本发明的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本发明的保护范围之内。因此，本发明的保护 范围应以权利要求所述的保护范围为准。
工业实用性
本发明提供的实施例，远程UE连接到中继UE，并且中继UE可以根据远程UE的服务质量要求建立连接，进而保证远程UE能够通过中继UE与网络进行通信。因此本发明具有很强的工业实用性。

Claims (38)

  1. 一种在设备直通系统中远程用户与中继节点的通信方法，包括：
    远程UE发送连接建立请求信息给中继节点；
    所述远程UE接收所述中继节点发送的连接建立响应信息。
  2. 根据权利要求1所述的远程用户与中继节点的通信方法，其中，所述远程UE是无网络覆盖UE、小区边缘UE或有网络覆盖的且寻找中继节点进行数据转发的UE。
  3. 根据权利要求1所述的远程用户与中继节点的通信方法，其中，所述连接建立请求信息包括以下字段的任意组合：远程UE的标识、连接建立原因和优先级。
  4. 根据权利要求3所述的远程用户与中继节点的通信方法，其中，所述远程UE的标识包括：邻近服务功能实体分配的邻近服务的用户设备标识Prose UE ID和/或所述远程UE所属的设备到设备D2D通信组标识。
  5. 根据权利要求3所述的远程用户与中继节点的通信方法，其中，所述优先级包括：远程UE的用户设备优先级、业务优先级、远程UE请求通信的通信组的优先级、或请求建立的D2D承载的优先级。
  6. 根据权利要求1所述的远程用户与中继节点的通信方法，其中，所述远程UE发送连接建立请求信息给中继节点的步骤包括：
    所述远程UE在如下任一条件下发送所述连接建立请求信息：
    所述远程UE有数据要发送到网络；
    所述远程UE请求接入网络。
  7. 根据权利要求1所述的远程用户与中继节点的通信方法，其中，所述连接建立请求信息中还包含一个或多个D2D承载配置请求信息。
  8. 根据权利要求7所述的远程用户与中继节点的通信方法，其中，所述 D2D承载配置请求信息包括以下字段的任意组合：服务质量等级标识QCI、分配和保留优先级ARP和UE-to-network指示信息。
  9. 根据权利要求8所述的远程用户与中继节点的通信方法，其中，在D2D承载为保证比特率GBR的承载时，所述D2D承载配置请求信息还包括上行/下行/单边保证比特率和/或上行/下行/单边最大比特率。
  10. 根据权利要求1所述的远程用户与中继节点的通信方法，其中
    所述连接建立响应信息为连接建立接受信息或连接建立拒绝信息；
    其中，所述连接建立接受信息包括：中继节点为远程UE分配的UE标识，以及MAC层配置信息，物理层配置信息和D2D承载增加的配置信息中的至少一个；
    所述连接建立拒绝信息包括：拒绝原因和/或禁止定时信息，其中所述禁止定时信息用于控制所述远程UE在预先设置的禁止时间超时之前不能发送连接建立请求信息。
  11. 根据权利要求10所述的远程用户与中继节点的通信方法，其中，所述D2D承载增加的配置信息包括以下字段的任意组合：D2D承载标识、分组数据汇聚协议PDCP层配置信息、无线链路控制RLC层配置信息、逻辑信道标识、逻辑信道配置、远程UE的聚合最大比特速率UE-AMBR。
  12. 根据权利要求10所述的远程用户与中继节点的通信方法，其中，所述拒绝原因是以下任意之一：所述远程UE的授权认证未通过、已接入的远程UE的数量达到预先设置的数量上限、没有可用资源和所述中继节点能力受限。
  13. 根据权利要求1所述的远程用户与中继节点的通信方法，其中，所述远程UE接收所述中继节点发送的连接建立响应信息的步骤之后，所述方法还包括：
    如果所述连接建立响应信息为连接建立接受信息，则所述远程UE根据 连接建立接受信息完成相应配置；
    如果所述连接建立响应信息为连接建立拒绝信息，则所述远程UE寻找其它中继节点接入，或等待禁止定时器超时之后再次给所述中继节点发送连接建立请求信息。
  14. 根据权利要求1所述的远程用户与中继节点的通信方法，其中，所述远程UE接收所述中继节点发送的连接建立响应信息的步骤之后，所述方法还包括：
    所述远程UE接收所述中继节点发送的连接释放信息；或者，
    所述远程UE发送连接释放请求信息给所述中继节点。
  15. 根据权利要求14所述的远程用户与中继节点的通信方法，其中，所述远程UE发送连接释放请求信息给所述中继节点的步骤包括：
    所述远程UE在如下条件下发送连接释放请求信息给所述中继节点：
    如果所述远程UE测量到所述远程UE与中继节点之间信道状况变差，则所述远程UE请求释放与中继节点的连接；或者，
    如果所述远程UE不再需要通过中继节点与网络保持连接，则所述远程UE请求释放与中继节点的连接。
  16. 一种在设备直通系统中远程用户与中继节点的通信方法，包括：
    中继节点接收远程UE发来的连接建立请求信息；
    所述中继节点判断是否接受所述远程UE的连接建立请求；
    如果所述中继节点接受所述远程UE的所述连接建立请求，则所述中继节点发送连接建立接受信息给所述远程UE；否则，所述中继节点发送连接建立拒绝信息给所述远程UE。
  17. 根据权利要求16所述的远程用户与中继节点的通信方法，其中，所述中继节点判断是否接受远程UE的连接建立请求的步骤包括：
    所述中继节点判断所述远程UE是否授权认证通过；若授权认证通过， 所述中继节点判断是否有足够的空口资源为所述远程UE提供服务；
    如果所述远程UE授权认证通过且所述中继节点有足够的空口资源为所述远程UE提供服务，则所述中继节点接受所述远程UE的连接建立请求，否则所述中继节点拒绝所述远程UE的连接建立请求。
  18. 根据权利要求17所述的远程用户与中继节点的通信方法，其中，所述中继节点判断是否有足够的空口资源为所述远程UE提供服务的步骤包括：
    所述中继节点根据如下任意信息，判断是否有足够的空口资源为所述远程UE提供服务：已接入的远程UE的数量、所述中继节点的收发能力、所述中继节点的资源负荷和所述远程UE的优先级。
  19. 根据权利要求16所述的远程用户与中继节点的通信方法，其中：
    所述连接建立接受信息包括：中继节点为远程UE分配的UE标识、媒体接入控制MAC层配置信息，物理层配置信息和D2D承载增加的配置信息中的至少一个；
    所述连接建立拒绝信息包括：拒绝原因和/或禁止定时信息，其中所述禁止定时信息用于控制所述远程UE在预先设置的禁止时间超时之前不能发送连接建立请求信息。
  20. 根据权利要求19所述的远程用户与中继节点的通信方法，其中，所述D2D承载增加的配置信息包括以下字段的任意组合：D2D承载标识、分组数据汇聚协议PDCP层配置信息、无线链路控制RLC层配置信息、逻辑信道标识、逻辑信道配置和远程UE的聚合最大比特速率UE-AMBR。
  21. 根据权利要求19所述的远程用户与中继节点的通信方法，其中，所述拒绝原因包括以下任意信息之一：所述远程UE的授权认证未通过、已接入的远程UE的数量达到预先设置的数量上限、没有可用资源和所述中继节点能力受限。
  22. 根据权利要求16所述的远程用户与中继节点的通信方法，其中，所述中继节点接收远程UE发来的连接建立请求信息的步骤之后，所述方法还 包括：
    所述中继节点根据所述连接建立请求信息中的远程UE的标识，与邻近服务功能实体完成对所述远程UE的授权认证；
    所述中继节点从所述邻近服务功能实体获取所述远程UE的订阅信息，其中所述远程UE的订阅信息包括所述远程UE的初始承载级服务质量QoS参数和/或下行业务流模板TFT信息。
  23. 根据权利要求22所述的远程用户与中继节点的通信方法，其中，所述初始承载级QoS参数包括如下信息的任意组合：服务质量等级QCI、分配和保留优先级ARP、聚合最大比特速率UE-AMBR和接入点聚合最大比特速率APN-AMBR。
  24. 根据权利要求16所述的远程用户与中继节点的通信方法，其中，所述中继节点发送连接建立接受信息给所述远程UE的步骤之后，所述方法还包括：
    所述中继节点发送连接释放信息给所述远程UE；或者，
    所述中继节点接收所述远程UE发送的连接释放请求信息。
  25. 根据权利要求16所述的远程用户与中继节点的通信方法，其中，所述中继节点发送连接释放信息给所述远程UE的步骤包括：
    所述中继节点在如下条件下发送所述连接释放信息给所述远程UE：
    如果所述中继节点不再继续作为中继节点工作，则所述中继节点释放所有与所述远程UE的连接；
    如果所述中继节点测量到其与所述远程UE之间信道状况变差，所述中继节点释放与所述远程UE的连接；
    所述中继节点在收到优先级为高级别的远程UE的连接建立请求时，如果与所述中继节点已建立连接的远程UE的数量达到预先设置的数量上限或所述中继节点的资源负荷超载，则所述中继节点释放可抢占的优先级为低级别的远程UE的连接。
  26. 一种在设备直通系统中远程用户与中继节点的通信装置，位于远程UE中，包括：
    第一发送模块，设置成：发送连接建立请求信息给中继节点；
    第一接收模块，设置成：接收所述中继节点发送的连接建立响应信息。
  27. 根据权利要求26所述的远程用户与中继节点的通信装置，其中，所述装置位于无网络覆盖UE、小区边缘UE或有网络覆盖的且寻找中继节点进行数据转发的UE。
  28. 根据权利要求26所述的远程用户与中继节点的通信装置，其中，所述连接建立请求信息包括以下字段的任意组合：远程UE的标识、连接建立原因和优先级。
  29. 根据权利要求28所述的远程用户与中继节点的通信装置，其中，所述远程UE的标识包括：邻近服务功能实体分配的邻近服务的用户设备标识Prose UE ID和/或所述远程UE所属的设备直通D2D通信组标识。
  30. 根据权利要求28所述的远程用户与中继节点的通信装置，其中，所述优先级包括：远程UE的用户设备优先级、业务优先级、远程UE请求通信的通信组的优先级、或请求建立的D2D承载的优先级。
  31. 根据权利要求26所述的远程用户与中继节点的通信装置，其中
    所述连接建立响应信息为连接建立接受信息或连接建立拒绝信息；
    其中，所述连接建立接受信息包括：中继节点为远程UE分配的UE标识、媒体接入控制MAC层配置信息，物理层配置信息和D2D承载增加的配置信息中的至少一个；
    所述连接建立拒绝信息包括：拒绝原因和/或禁止定时信息，其中所述禁止定时信息用于控制所述远程UE在预先设置的禁止时间超时之前不能发送连接建立请求消息。
  32. 根据权利要求26所述的远程用户与中继节点的通信装置，其中，所 述装置还包括：
    第二接收模块，设置成：接收所述中继节点发送的连接释放信息；或者，
    第二发送模块，设置成：发送连接释放请求信息给所述中继节点。
  33. 根据权利要求32所述的远程用户与中继节点的通信装置，其中，所述第二发送模块设置成按照如下方式发送所述连接释放请求信息给所述中继节点：
    在如下条件下发送所述连接释放请求信息给所述中继节点：
    如果测量到所述远程UE与中继节点之间信道状况变差，则请求释放与中继节点的连接；或者，
    如果所述远程UE不再需要通过中继节点与网络保持连接，则请求释放与中继节点的连接。
  34. 一种在设备直通系统中远程用户与中继节点的通信装置，位于中继节点上，包括：
    第三接收模块，设置成：接收连接建立请求信息；
    第一判断模块，设置成：判断是否接受远程UE的连接建立请求；
    第三发送模块，设置成：如果接受所述远程UE的连接建立请求，则发送连接建立接受信息给所述远程UE；否则发送连接建立拒绝信息给所述远程UE。
  35. 根据权利要求34所述的远程用户与中继节点的通信装置，其中：
    所述连接建立接受信息包括：中继节点为远程UE分配的UE标识、媒体接入控制MAC层配置信息、物理层配置信息和D2D承载增加的配置信息中的至少一个；
    所述连接建立拒绝信息包括：拒绝原因和/或禁止定时信息，其中所述禁止定时信息用于控制所述远程UE在预先设置的禁止时间超时之前不能发送连接建立请求消息。
  36. 根据权利要求35所述的远程用户与中继节点的通信装置，其中，所述拒绝原因包括以下任意信息之一：所述远程UE的授权认证未通过、已接入的远程UE的数量达到预先设置的数量上限、没有可用资源和所述中继节点能力受限。
  37. 根据权利要求34所述的远程用户与中继节点的通信装置，所述装置还包括：
    第四发送模块，设置成：发送连接释放信息给所述远程UE；或者，
    第四接收模块，设置成：接收所述远程UE发送的连接释放请求信息。
  38. 根据权利要求34所述的远程用户与中继节点的通信装置，其中，所述第四发送模块设置成按照如下方式发送连接释放信息给所述远程UE：
    在如下条件下发送所述连接释放信息给所述远程UE：
    如果所述中继节点不再继续作为中继节点工作，则释放所有与远程UE的连接；
    如果中继节点测量到其与所述远程UE之间信道状况变差，释放与所述远程UE的连接；
    在收到优先级为高级别的远程UE的连接建立请求时，如果与所述中继节点已建立连接的远程UE的数量达到预先设置的数量上限或所述中继节点的资源负荷超载，则释放可抢占的优先级为低级别的远程UE的连接。
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