WO2015042966A1 - 建立回程链路方法、装置及系统 - Google Patents

建立回程链路方法、装置及系统 Download PDF

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Publication number
WO2015042966A1
WO2015042966A1 PCT/CN2013/084738 CN2013084738W WO2015042966A1 WO 2015042966 A1 WO2015042966 A1 WO 2015042966A1 CN 2013084738 W CN2013084738 W CN 2013084738W WO 2015042966 A1 WO2015042966 A1 WO 2015042966A1
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WO
WIPO (PCT)
Prior art keywords
node
backhaul
information
requirement
system information
Prior art date
Application number
PCT/CN2013/084738
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English (en)
French (fr)
Inventor
李明超
熊新
施艺
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to CN201380003525.4A priority Critical patent/CN104823514B/zh
Priority to PCT/CN2013/084738 priority patent/WO2015042966A1/zh
Publication of WO2015042966A1 publication Critical patent/WO2015042966A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W28/00Network traffic management; Network resource management
    • H04W28/02Traffic management, e.g. flow control or congestion control
    • H04W28/08Load balancing or load distribution
    • H04W28/086Load balancing or load distribution among access entities
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W40/00Communication routing or communication path finding
    • H04W40/02Communication route or path selection, e.g. power-based or shortest path routing
    • H04W40/22Communication route or path selection, e.g. power-based or shortest path routing using selective relaying for reaching a BTS [Base Transceiver Station] or an access point
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W84/00Network topologies
    • H04W84/02Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/04Large scale networks; Deep hierarchical networks
    • H04W84/042Public Land Mobile systems, e.g. cellular systems
    • H04W84/047Public Land Mobile systems, e.g. cellular systems using dedicated repeater stations

Definitions

  • the present invention relates to communications technologies, and in particular, to a method, an apparatus, and a system for establishing a backhaul link. Background technique
  • LTE Long Term Evolved
  • 3GPP 3rd Generation Partnership
  • UMTS Universal Mobile Telecommunication System
  • LPN Low Power Node
  • the LPN may be a micro base station (Pico), a home base station (Femto), a relay node (Relay), etc., and the link between the LPN and the user equipment (User Equipment, UE for short) is called an access link, LPN.
  • the link with the eNB is called a backhaul link.
  • the LPN when the backhaul capacity of the LPN is limited, that is, when the backhaul link load is too high, the LPN exchanges current load information with the eNB. If the eNB load is relatively low, the LPN switches the part of the UE that is in the connected state to the eNB. In addition, the LPN can also allow the UE in the idle state to be camped on the cell by cell reselection. . By reducing the amount of traffic by reducing the number of users, the load on the backhaul link can be reduced.
  • the UE in the idle state needs to scan the neighbor information during the cell reselection, which increases the power consumption.
  • the service interruption and delay may also occur. Therefore, when the backhaul capacity of the LPN is limited, Processing will reduce the stability of the UE when transmitting data. Summary of the invention
  • the invention provides a method, a device and a system for establishing a backhaul link, which can reduce the excessive load of the node without affecting the service experience of the user.
  • a first aspect of the present invention provides a method for establishing a backhaul link, including:
  • the user equipment UE acquires system information of the first node, the system information of the first node includes backhaul requirement information of the first node, and the backhaul requirement information of the first node is used to indicate that the first node has a second node The need to establish a backhaul link;
  • the UE Determining, by the UE, the first node as an access node of the UE according to the backhaul requirement information of the first node and the current signal quality of the first node;
  • the request information includes the backhaul capacity improvement information and the identifier of the first node, so that the second node is configured according to the backhaul capacity enhancement information and the first node. Identifying backhaul establishment indication information;
  • the second A node is used to provide services for the UE.
  • the UE receives the backhaul establishment indication information that is sent by the second node, and completes, by using the backhaul establishment indication information, the first node After the configuration of the backhaul link between the UE and the second node, the method further includes: sending, by the UE, backhaul establishment information to the second node, so that the second node establishes the information according to the backhaul establishment information.
  • the first node passes a backhaul link between the UE and the second node.
  • the backhaul requirement information of the first node is a backhaul requirement indication of the first node or the The backhaul requirement level of a node;
  • the backhaul capacity increase information is a backhaul demand indication of the first node or a backhaul demand level of the first node.
  • the backhaul establishment indication information includes the UE establishing the first node and the The radio resource control protocol RRC configuration information required by the second node backhaul link.
  • system information of the first node further includes an identifier of the third node, where the third node is used to Said first node provides services;
  • Determining, according to the backhaul requirement information of the first node, and the signal quality of the first node, that the first node is an access node of the UE, includes:
  • the UE determines that the first node is an access node of the UE;
  • the access conditions include:
  • the backhaul requirement information of the first node meets a preset condition, the current signal quality of the first node measured by the UE is greater than a threshold, and the identifier of the second node is the same as the identifier of the third node.
  • a preset condition including:
  • the backhaul requirement level of the first node is greater than a first preset threshold, and the backhaul requirement level of the fourth node is less than a second preset threshold;
  • the backhaul demand level of the first node is greater than the backhaul demand level of the fourth node.
  • the UE receives the backhaul establishment indication information sent by the second node, and completes the indication according to the backhaul establishment indication information.
  • the method further includes:
  • the UE receives the link release indication information sent by the second node, and releases the connection between the UE and the fourth node according to the link release indication information.
  • the backhaul requirement information of the first node meets a pre- Set conditions, including:
  • the backhaul requirement level of the first node is greater than the backhaul requirement level of the fourth node received by the UE; or
  • the system information of the first node carries a backhaul requirement indication of the first node.
  • the current signal quality of the first node measured by the UE is greater than a preset threshold
  • the system information of the first node includes a backhaul demand level of the first node or a backhaul demand indication of the first node.
  • the method before the user equipment UE acquires system information of the first node, the method further includes: the UE camping on the a second node, and establishing an RRC connection with the second node; the UE receiving measurement control information of the second node, where the measurement control information indicates that the UE periodically reads the first node System information and measuring the signal quality of the first node.
  • a second aspect of the present invention provides a method for establishing a backhaul link, including:
  • the first node measures load information of the first node
  • the system information of the first node is broadcasted, so that the UE acquires system information of the first node, and determines, according to the backhaul requirement information of the first node, that the first node is used as the access of the UE.
  • the first node establishes a backhaul link between the UE and the second node by the first node.
  • the backhaul requirement information of the first node is a backhaul requirement indication of the first node or a backhaul requirement level of the first node.
  • the first node broadcasts system information of the first node, including:
  • the first node broadcasts system information of the first node
  • the system information of the first node includes a backhaul demand indication of the first node, and a third section The identifier of the point;
  • the first node is configured to provide services for the first node.
  • the first node broadcasts system information of the first node, including:
  • the system information of the first node includes a backhaul requirement level of the first node and an identifier of the third node;
  • the third node is configured to provide a service for the first node.
  • the first node broadcasts system information of the first node, including:
  • the first node measures that the first node is not connected to the third node, and the first node broadcasts system information of the first node;
  • the system information of the first node includes a backhaul demand level of the first node or a backhaul demand indication of the first node.
  • a third aspect of the present invention provides a method for establishing a backhaul link, including:
  • the second node receives the request information sent by the user equipment UE, where the request information includes backhaul capacity enhancement information and an identifier of the first node;
  • the second node sends the backhaul establishment indication information to the UE, where the backhaul establishment indication information includes a radio resource control protocol required by the UE to establish a backhaul link with the first node and the second node.
  • RRC configuration information includes a radio resource control protocol required by the UE to establish a backhaul link with the first node and the second node.
  • the second node receives the backhaul establishment information sent by the UE, and establishes, by the backhaul establishment information, the backhaul link of the first node by using the UE and the second node.
  • the backhaul capacity increase information is a backhaul demand indication of the first node or a backhaul demand level of the first node.
  • the method before the second node receives the request information sent by the user equipment UE, the method further includes:
  • the second node establishes an RRC connection with the UE
  • the second node sends measurement control information to the UE, so that the UE periodically reads system information of the first node according to the measurement control information and measures signal quality of the first node.
  • a fourth aspect of the present invention provides a user equipment UE, including:
  • An acquiring module configured to acquire system information of the first node, where system information of the first node includes backhaul requirement information of the first node, and backhaul requirement information of the first node is used to indicate that the first node has The need for the two nodes to establish a backhaul link;
  • a determining module configured to determine, according to the backhaul requirement information of the first node and the current signal quality of the first node, the first node as an access node of the UE;
  • a sending module configured to send request information to the second node, where the request information includes the backhaul capacity promotion information and an identifier of the first node, so that the second node is configured according to the backhaul capacity and the first
  • the identifier of the node determines the backhaul establishment indication information
  • a receiving module configured to receive the backhaul establishment indication information sent by the second node, and complete a backhaul link configuration of the first node and the second node according to the backhaul establishment indication information
  • the second node is configured to provide a service for the UE.
  • the sending module is further configured to receive, by the receiving module, the backhaul establishment indication information that is sent by the second node, and establish an indication according to the backhaul After the information completes the backhaul link configuration of the first node and the second node, sending backhaul completion information to the second node, so that the second node establishes the first information according to the backhaul establishment information.
  • a node passes a backhaul link between the UE and the second node.
  • the backhaul requirement information of the first node is a backhaul requirement indication of the first node or the The backhaul requirement level of a node;
  • the backhaul capacity increase information is a backhaul demand indication of the first node or the first section The return demand level of the point.
  • the backhaul establishment indication information includes that the UE establishes a backhaul chain with the first node and the second node Radio resource control protocol RRC configuration information required by the road.
  • the method further includes:
  • a detecting module configured to detect a current signal quality of the first node
  • the system information of the first node further includes an identifier of the third node, where the third node is configured to provide a service for the first node;
  • the determining module is specifically configured to: if the first node meets an access condition, determine that the first node is an access node of the UE;
  • the access conditions include:
  • the backhaul requirement information of the first node meets a preset condition, the current signal quality of the first node is greater than a threshold, and the identifier of the second node is the same as the identifier of the third node.
  • the UE if the UE is connected to the fourth node and the second node as the relay node, The backhaul requirement information of the first node meets a preset condition, including:
  • the backhaul requirement level of the first node is greater than a first preset threshold, and the backhaul requirement level of the fourth node is less than a second preset threshold;
  • the backhaul demand level of the first node is greater than the backhaul demand level of the fourth node.
  • the receiving module is further configured to receive the backhaul establishment indication information sent by the second node, and receive the backhaul link configuration of the first node and the second node according to the backhaul establishment indication information, and receive The link release indication information sent by the second node, and releasing the connection between the UE and the fourth node according to the link release indication information.
  • the backhaul of the first node if the UE is connected to the second node on one side, the backhaul of the first node The demand information meets the preset conditions, including: The backhaul requirement level of the first node is greater than the backhaul requirement level of the fourth node received by the UE; or
  • the system information of the first node carries a backhaul requirement indication of the first node.
  • the method further includes:
  • a detecting module configured to detect a current signal quality of the first node
  • the determining module is specifically configured to: when the current signal quality of the first node is greater than a preset threshold, determine that the first node is an access node of the UE;
  • the system information of the first node includes a backhaul demand level of the first node or a backhaul demand indication of the first node.
  • the method further includes:
  • connection module configured to: reside in the second node, and establish an RRC connection with the second node, before the acquiring module acquires system information of the first node;
  • the receiving module is further configured to receive measurement control information of the second node, where the measurement control information indicates that the UE periodically reads system information of the first node and measures signal quality of the first node .
  • a fifth aspect of the present invention provides a node, including:
  • a measuring module configured to measure load information of the first node
  • a determining module configured to determine system information of the first node according to load information of the first node, where system information of the first node includes backhaul requirement information of the first node, and a broadcast module, The system information of the first node is broadcasted, so that the UE acquires system information of the first node, and determines, according to the backhaul requirement information of the first node, that the first node is used as the access of the UE.
  • a establishing module configured to establish, by the first node, a backhaul link between the UE and the second node.
  • the backhaul requirement information of the first node is a backhaul requirement indication of the first node or a backhaul requirement level of the first node.
  • the broadcast module is specifically configured to: if the load information of the first node is greater than a load threshold, the first node broadcasts system information of the first node;
  • the system information of the first node includes an indication of a backhaul requirement of the first node and an identifier of the third node;
  • the third node is configured to provide a service for the first node.
  • the broadcast module is specifically configured to determine, according to load information of the first node, a backhaul demand level of the first node, and broadcast system information of the first node;
  • the system information of the first node includes a backhaul requirement level of the first node and an identifier of the third node;
  • the third node is configured to provide a service for the first node.
  • the broadcast module is specifically configured to measure that the first node is not connected to the third node, and the first node broadcasts system information of the first node;
  • the system information of the first node includes a backhaul demand level of the first node or a backhaul demand indication of the first node.
  • a sixth aspect of the present invention provides a node, including:
  • a receiving module configured to receive request information sent by the user equipment UE, where the request information includes backhaul capacity enhancement information and an identifier of the first node;
  • a determining module configured to determine backhaul establishment indication information according to the backhaul capacity promotion information and the identifier of the first node
  • a sending module configured to send the backhaul establishment indication information to the UE, where the backhaul establishment indication information includes a radio resource control protocol required by the UE to establish a backhaul link with the first node and the second node RRC configuration information;
  • the receiving module is further configured to receive backhaul establishment information sent by the UE, and establish, by the backhaul establishment information, a backhaul link of the first node by using the UE and the second node.
  • the backhaul capacity improvement information A backhaul demand indication for the first node or a backhaul demand level of the first node.
  • the method further includes:
  • an establishing module configured to establish an RRC connection with the UE before the receiving module receives the request information sent by the user equipment UE;
  • a seventh aspect of the present invention provides a system for establishing a backhaul link, comprising: the user equipment described in the foregoing fourth aspect and the foregoing various possible implementation manners of the fourth aspect; The nodes described in each of the possible implementation manners; the nodes described in the sixth aspect and the above various feasible implementation manners of the sixth aspect.
  • the UE acquires system information of the first node, where the system information of the first node includes backhaul requirement information of the first node, and the backhaul requirement information of the first node is used to indicate that the first node has a requirement for establishing a backhaul link with the second node, and then Determining, by the UE, the first node as the access node of the UE according to the backhaul requirement information of the first node and the current signal quality of the first node, the UE sending the request information to the second node, where the request information includes the backhaul capacity improvement information and the first node Identifying, so that the second node determines the backhaul establishment indication information according to the backhaul capacity enhancement information and the identifier of the first node, and finally the UE receives the backhaul setup indication information sent by the second node, and completes the first node by using the UE according to the backhaul establishment indication information.
  • the backhaul link configuration of the second node realizes that a new backhaul link with the second node is established for the first node with excessive load through the UE with relay capability, so that the first node can utilize the new backhaul link Data transmission with the second node, without affecting the user's business experience, The load on the first node is too high.
  • FIG. 1 is a schematic flowchart of a method for establishing a backhaul link according to Embodiment 1 of the present invention
  • FIG. 2 is a schematic diagram of a first scenario of a method for establishing a backhaul link according to Embodiment 1 of the present invention
  • FIG. 3 is a schematic diagram of a second scenario of a method for establishing a backhaul link according to Embodiment 1 of the present invention
  • FIG. 4 is a third scenario diagram of a method for establishing a backhaul link according to Embodiment 1 of the present invention.
  • FIG. 5 is a schematic diagram of a fourth scenario of a method for establishing a backhaul link according to Embodiment 1 of the present invention.
  • FIG. 6 is a schematic flowchart of a method for establishing a backhaul link according to Embodiment 6 of the present invention
  • FIG. 6 is a schematic flowchart of a method for establishing a backhaul link according to Embodiment 2 of the present invention
  • FIG. 7 is a schematic flowchart of a method for establishing a backhaul link according to Embodiment 3 of the present invention
  • FIG. 8 is a schematic diagram of signaling interaction of a method for establishing a backhaul link according to Embodiment 4 of the present invention
  • FIG. 9 is a schematic structural diagram of a user equipment UE according to Embodiment 5 of the present invention
  • FIG. 10 is a schematic structural diagram of a user equipment UE according to Embodiment 10 of the present invention.
  • FIG. 10 is a schematic diagram of a user according to Embodiment 6 of the present invention. Schematic diagram of the structure of the device UE;
  • FIG. 11 is a schematic structural diagram of a node according to Embodiment 7 of the present invention.
  • FIG. 12 is a schematic structural diagram of a node according to Embodiment 8 of the present invention.
  • FIG. 13 is a schematic structural diagram of a node according to Embodiment 9 of the present invention.
  • FIG. 14 is a schematic structural diagram of a user equipment UE according to Embodiment 11 of the present invention
  • FIG. 15 is a schematic structural diagram of a node according to Embodiment 12 of the present invention
  • FIG. 16 is a schematic structural diagram of a node according to Embodiment 13 of the present invention. detailed description
  • FIG. 1 is a schematic flowchart of a method for establishing a backhaul link according to Embodiment 1 of the present invention, where an execution subject is a UE with relay capability.
  • This type of UE has dual connectivity capabilities, which means that two network nodes can be connected at the same time.
  • the first node and the second node transmit data through other backhaul links, where the first node may be a low power node (Lower Power Node, LPN for short), and the low power node may be a micro base station (Pico). ), a home base station (Femto), a relay node (Relay), etc.
  • the second node may be an evolved Node B (abbreviated as: eNB).
  • LPN Low Power Node
  • eNB evolved Node B
  • the other backhaul link can be a direct link or a multi-hop link.
  • the second node instructs the UE to establish a backhaul link with the second node and the first node. Therefore, a backhaul link is added between the first node and the second node, and the network can use the UE as a relay to transmit data between the first node and the second node through the newly added backhaul link.
  • the embodiment of the present invention improves the backhaul capacity by dynamically adding such a link, thereby solving the problem that the backhaul link is too high, and does not affect the user's service experience.
  • a method for establishing a backhaul link includes the following steps:
  • Step 100 The user equipment UE acquires system information of the first node.
  • the system information of the first node includes backhaul requirement information of the first node, and the backhaul requirement information of the first node is used to indicate that the first node has a requirement for establishing a backhaul link with the second node.
  • Step 101 The UE determines, according to the backhaul requirement information of the first node and the current signal quality of the first node, the first node as an access node of the UE.
  • Step 102 The UE sends the request information to the second node.
  • the request information includes the backhaul capacity improvement information and the identifier of the first node, so that the second node determines the backhaul establishment indication information according to the backhaul capacity promotion information and the identifier of the first node.
  • Step 103 The UE receives the backhaul establishment indication information sent by the second node, and completes the backhaul link configuration of the first node by using the UE and the second node according to the backhaul establishment indication information.
  • the UE completes the backhaul link configuration of the first node and the second node according to the backhaul establishment indication information, and establishes a backhaul link between the first node and the second node by using the UE as a relay.
  • the backhaul establishment indication information includes radio resource control protocol (Radio Resource Control, RRC) configuration information required by the UE to establish a backhaul link with the first node and the second node.
  • RRC Radio Resource Control
  • the second node is used to provide services for the UE.
  • the system information of the first node is obtained by the UE, the system information of the first node includes backhaul requirement information of the first node, and the backhaul requirement information of the first node is used to indicate that the first node has Establishing a backhaul link with the second node, and determining, by the UE, the first node as the access node of the UE according to the backhaul requirement information of the first node and the current signal quality of the first node, where the UE sends the request information to the second node,
  • the request information includes the backhaul capacity improvement information and the identifier of the first node, so that the second node determines the backhaul establishment indication information according to the backhaul capacity promotion information and the identifier of the first node, and finally the UE receives the backhaul establishment indication information sent by the second node, and Completing the configuration of the backhaul link between the UE and the second node by the first node according to the
  • the method further includes: the UE sending backhaul setup completion information to the second node, so that the second node establishes a backhaul link between the UE and the second node by using the backhaul according to the backhaul establishment information.
  • the backhaul requirement information of the first node in the first embodiment may be the backhaul requirement indication of the first node or the backhaul requirement level of the first node.
  • the backhaul capacity improvement information in the first embodiment is specifically the backhaul requirement indication of the first node or the backhaul requirement level of the first node.
  • an identifier of the lbit may be added to the system information of the first node as the backhaul requirement indication of the first node. For example, when the identifier is set to “0”, the first node does not need to be associated with the second component.
  • the first node When the flag is set to "1", it indicates that the first node needs to establish a new backhaul link with the second node.
  • the first node divides the load condition into several levels according to the size of the load, and the higher the level, the higher the load.
  • the first node compares the measured backhaul link load value with the load value range of each level, and finally determines the backhaul demand level of the first node.
  • the backhaul demand level of the first node actually represents: The backhaul requirement level of the current backhaul link of the first node and the second node, optionally, the higher the backhaul requirement level is, indicating that the load of the existing backhaul link of the first node and the second node is heavier, The more the new backhaul link needs to be established; or the lower the demand level of the backhaul, the more the existing backhaul link load of the first node and the second node is, and the new backhaul link needs to be established.
  • the specific sorting setting for the backhaul demand level is not limited.
  • the system information of the first node in the first embodiment further includes an identifier of the third node, and the third node is used to provide a service for the first node.
  • the third node may be an evolved base station
  • eNB evolved Node B for short: eNB
  • step 101 of the first embodiment the method includes:
  • Step 101a If the first node meets an access condition, the UE determines that the first node is an access node of the UE.
  • the access conditions include:
  • the backhaul requirement information of the first node meets the preset condition, the current signal quality of the first node measured by the UE is greater than a threshold, and the identifier of the second node is the same as the identifier of the third node.
  • the UE may preset a preset threshold, for example, the preset threshold may receive power through a reference signal (Reference Signal Received Power, Abbreviation: RSRP) or Reference Signal Received Quality (RSRQ), when the UE detects the signal quality of the first node, for example, compares the RSRP of the first node with a preset threshold. If the RSRP is greater than the preset threshold, the signal quality of the first node 1 can satisfy the signal quality requirement of establishing the backhaul link between the first node 1 and the second node 2.
  • RSRP Reference Signal Received Power
  • RSRQ Reference Signal Received Quality
  • the identifier of the second node is the same as the identifier of the third node, indicating that the second node serving the UE is the same network node as the third node serving the first node, that is, the third node is the second node. node. In this way, when the backhaul link is established, the establishment of the backhaul link between multiple second nodes is not performed, unnecessary interaction is avoided, and network resources are saved.
  • FIG. 2 is a schematic diagram of a first scenario of a method for establishing a backhaul link according to Embodiment 1 of the present invention.
  • UE 3 is connected as a relay node to a fourth node 4 and a second node 2, respectively.
  • the node 4 is also an LPN.
  • the UE 3 has established a dual connection with the second node 2 and the fourth node 4 to form a backhaul link, that is, the UE 3 has transmitted the second node 2 and the fourth node as a relay node. Data between 4.
  • FIG. 2 is a schematic diagram of a first scenario of a method for establishing a backhaul link according to Embodiment 1 of the present invention.
  • UE 3 is connected as a relay node to a fourth node 4 and a second node 2, respectively.
  • the node 4 is also an LPN.
  • the UE 3 has established a dual connection with the second node 2 and the fourth node 4 to form a backhaul link
  • the first node 1 establishes a multi-hop backhaul link with the second node 2 through other network nodes, or directly establishes a backhaul link with the second node 2. But the first node 1 and the second node 2 also have a backhaul link, and, The backhaul load level of a node 1 is too high.
  • the backhaul requirement information of the first node in the foregoing step 101a satisfies a preset condition, and specifically includes the following two methods:
  • Manner 1 The backhaul demand level of the first node is greater than the first preset threshold, and the backhaul demand level of the fourth node is less than the second preset threshold;
  • the backhaul demand level of the first node and the first preset threshold, and the backhaul demand level of the fourth node are compared with the second preset threshold, which is an absolute comparison, that is, because the backhaul demand level is reflected.
  • the degree of load of a node, so the comparison in the first mode can reflect that the load level of the first node is higher than the first preset threshold, and the load level of the fourth node is lower than the second preset threshold.
  • the first preset threshold and the second preset threshold have no explicit size relationship, and may be designed according to statistics or experience, which is not limited herein.
  • mode 2 the backhaul demand level of the first node is greater than the backhaul demand level of the fourth node, and the second method is a relative comparison, because the backhaul requirement level of the first node reflects the load level of the first node, According to the comparison method of the second method, it only cares about the relative comparison of the degree of load between the two nodes.
  • the UE receives the backhaul establishment indication information sent by the second node, and completes the backhaul link configuration of the first node and the second node according to the backhaul establishment indication information.
  • the UE also includes:
  • Step 104 The UE receives the link release indication information sent by the second node, and releases the connection between the UE and the fourth node according to the link release indication information.
  • the second node after receiving the request message sent by the UE, the second node needs to detect that the fourth node currently connected by the UE has several backhaul links, and if there is only one pass between the fourth node and the second node, The backhaul link established by the UE, the second node does not instruct the UE to establish a backhaul link with the first node. Because if the UE wants to establish a backhaul link with the first node, the UE must first disconnect the backhaul link with the fourth node, so that the fourth node will lose the backhaul link with the second node, causing the user under the fourth node. Communication is interrupted.
  • the second node determines according to the identifier of the first node, the backhaul requirement level of the first node, and the current resource usage. If the establishment condition is met, Instructing the UE to establish a release connection with the fourth node while establishing a backhaul link between the second node and the first node.
  • FIG. 3 is a schematic diagram of a second scenario of a method for establishing a backhaul link according to Embodiment 1 of the present invention.
  • UE 3 is only connected to the second node 2, and the first node 1 passes other backhaul links.
  • the second node 2 is connected.
  • the specific backhaul link may be a backhaul link established by other UEs, or may be a backhaul link formed by directly connecting the first node 1 and the second node 2.
  • the backhaul requirement information of the first node in the foregoing step 101a satisfies a preset condition, including:
  • the system information of the first node carries a backhaul demand indication of the first node.
  • FIG. 4 is a schematic diagram of a third scenario of a method for establishing a backhaul link according to Embodiment 1 of the present invention.
  • UE 3 is connected to the second node 2 on one side, and the first node is The fourth node 4 and the second node 2 both have a connection of a backhaul link, and the fourth node 4 is also an LPN.
  • the load level of the back link of the first node 1 and the second node 2 is significantly higher than the load level of the back link of the fourth node 4 and the second node 2.
  • the backhaul requirement information of the first node in the foregoing step 101a satisfies the preset condition, and the method includes: the backhaul requirement level of the first node is greater than the backhaul demand level of the fourth node received by the UE.
  • the backhaul requirement level of the fourth node may also be implemented in a manner similar to the method of the embodiment 100.
  • the system information of the first node carries the backhaul requirement indication of the first node.
  • FIG. 5 is a schematic diagram of a fourth scenario of a method for establishing a backhaul link according to Embodiment 1 of the present invention.
  • UE 3 is connected to the second node 2 on one side, and the first node 1 is not connected.
  • Any eNB establishes any connection, which is in an isolated state, unable to perform data communication, and the first node 1 of this type has the highest access level.
  • the UE determines that the first node is the access node of the UE, and specifically includes:
  • the access level of the first node 1 is set to the highest access level, and the current signal quality of the first node measured by the UE is greater than a preset threshold.
  • the UE may preset a preset threshold, for example, the preset threshold may receive power through a reference signal (Reference Signal Received Power, Abbreviation: RSRP) or Reference Signal Received Quality (RSRQ), when the UE detects the signal quality of the first node, for example, compares the RSRP of the first node with a preset threshold. If the RSRP is greater than the preset threshold, the signal quality of the first node 1 can satisfy the signal quality requirement of establishing the backhaul link between the first node 1 and the second node 2.
  • RSRP Reference Signal Received Power
  • RSRQ Reference Signal Received Quality
  • the system information of the first node includes a backhaul demand level of the first node or a backhaul demand indication of the first node.
  • the method further includes: Step 105: The UE camps on the second node, and establishes an RRC connection with the second node.
  • Step 106 The UE receives measurement control information of the second node, where the measurement control information indicates that the UE periodically reads system information of the first node and measures signal quality of the first node.
  • FIG. 6 is a schematic flowchart of a method for establishing a backhaul link according to Embodiment 2 of the present invention, where an execution body is a first node, and the first node may be an LPN.
  • a method for establishing a backhaul link includes the following steps:
  • Step 200 The first node measures load information of the first node.
  • the load information may be represented by a total number of physical resource blocks (Physical Resource Blocks, PRBs) for data transmission that the first node is allocated on the backhaul link within a given time period;
  • PRBs Physical Resource Blocks
  • the load information may also be represented by a PRB usage rate of the first node on the backhaul link within a given time period;
  • the load information can also be expressed by the PRB usage rate of the entire cell within the coverage of the first node within a given time period.
  • Step 201 The first node determines system information of the first node according to load information of the first node.
  • the system information of the first node includes backhaul requirement information of the first node.
  • Step 202 The first node broadcasts the system information of the first node, so that the UE acquires system information of the first node, and determines, according to the backhaul requirement information of the first node, the first node as the access node of the UE.
  • Step 203 The first node establishes a backhaul link between the UE and the second node by using the first node. Specifically, the first node receives an RRC setup request sent by the UE, and establishes a backhaul link between the UE and the second node according to the RRC setup request.
  • the first node measures the load information of the first node, and then the first node determines the system information of the first node according to the load information of the first node, and finally the first node includes the first node.
  • the system information of the backhaul requirement information of a node is broadcasted, so that the UE acquires the system information of the first node, and determines, according to the backhaul requirement information of the first node, the first node as the access node of the UE, and finally by the first
  • the node establishes a backhaul link between the UE and the second node by the first node.
  • the backhaul requirement information of the first node is a backhaul requirement indication of the first node or a backhaul requirement level of the first node.
  • Step 202a The first node determines, according to load information of the first node, a backhaul requirement level of the first node, where the first node broadcasts system information of the first node.
  • the system information of the first node includes a backhaul requirement level of the first node and an identifier of the third node;
  • the third node is used to provide services for the first node.
  • the backhaul requirement level of the first node needs to be compared with the backhaul requirement level of the fourth node, when the first After the backhaul requirement level of the node meets the corresponding preset condition, the UE uses the first node as the access node of the UE, and then establishes a backhaul link between the first node and the second node through subsequent interaction between the UE and the second node. .
  • Embodiment 6 A possible implementation of the first node in step 202 is:
  • Step 202b If the load information of the first node is greater than the load threshold, the first node broadcasts the system information of the first node.
  • the system information of the first node includes the backhaul requirement indication of the first node and the identifier of the third node. It should be noted that the third node is used to provide services for the first node.
  • Step 202c The first node measures that the first node is not connected to the third node, and the first node broadcasts the system information of the first node.
  • the system information of the first node includes a backhaul demand level of the first node or a backhaul demand indication of the first node.
  • FIG. 7 is a schematic flowchart of a method for establishing a backhaul link according to Embodiment 3 of the present invention, where an execution entity is a second node, which may be an eNB.
  • a method for establishing a backhaul link includes the following steps:
  • Step 300 The second node receives the request information sent by the user equipment UE.
  • the request information includes backhaul capacity improvement information and an identifier of the first node, where the backhaul capacity improvement information may be a backhaul demand indication of the first node or a backhaul demand level of the first node.
  • Step 301 The second node determines the backhaul establishment indication information according to the backhaul capacity enhancement information and the identifier of the first node.
  • Step 302 The second node sends backhaul establishment indication information to the UE.
  • the backhaul establishment indication information includes RRC configuration information required by the UE to establish a backhaul link with the first node and the second node.
  • Step 303 The second node receives backhaul establishment information sent by the UE, and establishes a backhaul link between the UE and the second node by using the backhaul establishment completion information.
  • the second node receives the request information sent by the user equipment UE, and then the second node determines the backhaul establishment indication information according to the backhaul capacity enhancement information and the identifier of the first node, and finally the second node Sending backhaul indication information to the UE, so that the UE completes the backhaul link configuration of the first node and the second node according to the backhaul establishment indication information, and finally the second node receives the backhaul establishment completion information sent by the UE, and completes the completion information according to the backhaul. Establishing a backhaul link between the UE and the second node by the first node.
  • the backhaul capacity increase information may be a backhaul demand indication of the first node or a backhaul demand level of the first node.
  • step 300 in Figure 7 it also includes:
  • Step 303 The second node establishes an RRC connection with the UE.
  • Step 304 The second node sends measurement control information to the UE, so that the UE periodically reads the system information of the first node according to the measurement control information and measures the signal quality of the first node.
  • FIG. 8 is a schematic diagram of signaling interaction of a method for establishing a backhaul link according to Embodiment 4 of the present invention. Referring to FIG. 8, a backhaul chain is established between a UE, a first node, and a second node involved in the foregoing embodiments of the present invention. The process of the road is generally described. As shown in FIG. 8, a method for establishing a backhaul link includes the following steps:
  • Step 400 The second node establishes an RRC connection with the UE.
  • Step 401 The second node sends measurement control information to the UE, so that the UE periodically reads the system information of the first node according to the measurement control information and measures the signal quality of the first node.
  • Step 402 The first node measures load information of the first node.
  • Step 403 The first node determines system information of the first node according to load information of the first node.
  • the first node measures the load condition of the backhaul link, and determines a corresponding backhaul demand level according to the load measurement value.
  • the first node carries the backhaul requirement level of the first node and the identifier of the third node currently serving the first node in the system information;
  • the first node measures the load of the backhaul link, and if the load size exceeds the preset threshold, the first node carries the backhaul requirement of the first node in the system information of the first node. And indicating the identifier of the third node that is currently serving the first node; for the scenario in the fourth embodiment, the first node measures the load status of the backhaul link, and determines the backhaul requirement level of the corresponding first node according to the load measurement value. .
  • the first node carries the backhaul requirement level of the first node and the identifier of the third node currently serving the first node in the system information of the first node; For the scenario in the foregoing fifth embodiment, the first node detects that it has no connection with any eNB, and the first node carries the backhaul requirement level in the system information without carrying the identifier of the third node.
  • Step 404 The first node broadcasts system information of the first node.
  • Step 405 The UE acquires system information of the first node, and the UE determines, according to the backhaul requirement information of the first node and the current signal quality of the first node, the first node as the access node of the UE.
  • the system information of the first node includes backhaul requirement information of the first node, and the backhaul requirement information of the first node is used to indicate that the first node has a requirement for establishing a backhaul link with the second node.
  • the UE periodically reads the system information of the first node, and if the following conditions are all satisfied, the first node is used as the target access node: the system information of the first node is carried in The backhaul demand level of the first node; the backhaul demand level of the first node is higher than the first preset threshold, and the backhaul demand level of the currently connected fourth node is lower than the second preset threshold;
  • the carried eNB ID is the same as the eNB ID currently serving the UE.
  • the identifier of the second node is the same as the identifier of the third node. If the current signal quality of the first node meets the preset condition, the first node is determined to be the access. node.
  • the UE periodically reads the system information of the first node, and if the following conditions are all satisfied, the first node is used as the target access node: the system information of the first node carries the first The backhaul requirement indication of a node; the eNB ID carried in the system information of the first node is the same as the eNB ID currently serving the UE, that is, the identifier of the second node is the same as the identifier of the third node; the current signal quality of the first node When the preset condition is met, it is determined that the first node is an access node.
  • the UE periodically reads the system information of each first node, and if the following conditions are all satisfied, the first node is used as the target access node: the system information of the first node carries the backhaul The demand level and the backhaul demand level are higher than other nodes (for example, the fourth node in the fourth embodiment); the eNB ID carried in the system information of the first node is the same as the eNB ID currently serving the UE, SP, the identifier of the second node Same as the identifier of the third node; if the current signal quality of the first node meets the preset condition, it is determined that the first node is an access node.
  • the UE periodically reads the system information of the first node, and if the system information of the first node is found to include the backhaul requirement level of the first node or the backhaul requirement indication of the first node, The identifier of the third node, the UE determines that the first node is in No connection status, and the first node access priority is set to the highest. If the signal quality of the first node meets the preset condition, determining that the first node is an access node.
  • Step 406 The UE sends request information to the second node, where the request information includes backhaul capacity promotion information and an identifier of the first node.
  • the UE reports a request message carrying the identifier of the first node and the backhaul capacity enhancement information to the second node, requesting the second node to establish a backhaul link with the first node by using the UE.
  • the backhaul capacity improvement information is the backhaul demand level of the first node;
  • the backhaul capacity improvement information is the backhaul demand indication of the first node;
  • the backhaul capacity increase information is a backhaul demand level of the first node or a backhaul demand indication of the first node.
  • Step 407 The second node determines the backhaul establishment indication information according to the backhaul capacity enhancement information and the identifier of the first node.
  • the second node determines, according to the identifier of the first node, the backhaul requirement level of the first node, the identifier of the fourth node currently connected by the UE, and the current resource usage, if the content is satisfied.
  • the connection establishment condition instructs the UE to release the connection with the fourth node and establish a backhaul link with the first node.
  • the second node determines, according to the identifier of the first node, the backhaul requirement indication of the first node, and the current resource usage, and if the connection establishment condition is met, instructs the UE to establish the second node. And the backhaul link of the first node.
  • the second node determines, according to the identifier of the first node, the backhaul requirement level of the first node, and the current resource usage, and if the connection establishment condition is met, instructs the UE to establish the second node and The backhaul link of the first node.
  • the second node determines, according to the identifier of the first node, the backhaul demand level of the first node, or the backhaul demand indication of the first node, and the current resource usage situation, if the connection establishment condition is met, The UE is instructed to establish a backhaul link with the second node and the first node.
  • Step 408 The second node sends link release indication information to the UE, so that the UE releases the connection with the fourth node.
  • step 408 is only for the scenario of the second embodiment above. For the embodiment 3. In the scenario of the fourth embodiment and the fifth embodiment, the step 408 is not required to be performed.
  • Step 409 The second node sends backhaul establishment indication information to the UE.
  • Step 410 The UE receives the backhaul establishment indication information sent by the second node, and completes the backhaul link configuration of the first node and the second node according to the backhaul establishment indication information. It should be noted that, in the above embodiments, only one first node is involved. When there are multiple first nodes in the network, if multiple first nodes meet the judgment condition as the target first node, the UE will target The list of first nodes and the corresponding backhaul demand level are sent to the second node, and the second node determines which first node to establish the backhaul link with.
  • FIG. 9 is a schematic structural diagram of a user equipment UE according to Embodiment 5 of the present invention.
  • the UE has dual connectivity capability, that is, two network nodes can be connected at the same time. It can be used to perform the corresponding method in FIG. 1 .
  • the UE includes: an obtaining module 10 , a determining module 11 , a sending module 12 , and a receiving module 13 .
  • the obtaining module 10 is configured to obtain system information of the first node.
  • the system information of the first node includes backhaul requirement information of the first node, and the backhaul requirement information of the first node is used to indicate that the first node has a requirement for establishing a backhaul link with the second node.
  • the determining module 11 is configured to determine, according to the backhaul requirement information of the first node and the current signal quality of the first node, the first node as the access node of the UE.
  • the sending module 12 is configured to send request information to the second node.
  • the request information includes the backhaul capacity improvement information and the identifier of the first node, so that the second node determines the backhaul establishment indication information according to the backhaul capacity promotion information and the identifier of the first node.
  • the receiving module 13 is configured to receive the backhaul establishment indication information sent by the second node, and complete the backhaul link configuration of the first node by using the UE and the second node according to the backhaul establishment indication information.
  • the UE completes the backhaul link configuration of the first node and the second node according to the backhaul establishment indication information, and establishes a backhaul link between the first node and the second node by using the UE as a relay.
  • the backhaul establishment indication information includes radio resource control protocol (Radio Resource Control, RRC) configuration information required by the UE to establish a backhaul link with the first node and the second node.
  • RRC Radio Resource Control
  • the second node is used to provide services for the UE.
  • the method for establishing a backhaul link obtains system information of the first node by using an acquiring module, where system information of the first node includes backhaul requirement information of the first node, and the first node
  • the backhaul requirement information is used to indicate that the first node has a requirement for establishing a backhaul link with the second node
  • the determining module determines, according to the backhaul requirement information of the first node and the current signal quality of the first node, that the first node is used as the access of the UE.
  • the sending module sends the request information to the second node, where the request information includes the backhaul capacity lifting information and the identifier of the first node, so that the second node determines the backhaul establishing indication information according to the backhaul capacity lifting information and the identifier of the first node, and finally receives the
  • the module receives the backhaul establishment indication information sent by the second node, and completes the backhaul link configuration of the first node by using the UE and the second node according to the backhaul establishment indication information, and implements the UE with the relay capability to be overloaded.
  • a node establishes a new backhaul link with the second node, so that the first node can use the new backhaul link to perform data transmission with the second node, and reduces the first node without affecting the user's service experience. High load.
  • the sending module 12 is further configured to: after receiving, by the receiving module 13, the backhaul establishing indication information sent by the second node, and completing the backhaul link configuration of the first node and the second node according to the backhaul establishing indication information, to the second The node sends backhaul setup complete information, so that the second node establishes a backhaul link between the UE and the second node by the first node according to the backhaul setup complete information.
  • the backhaul requirement information of the first node in the ninth embodiment may be the backhaul demand indication of the first node or the backhaul demand level of the first node.
  • the backhaul capacity improvement information in the first embodiment is specifically the backhaul requirement indication of the first node or the backhaul requirement level of the first node. The specific implementation of the backhaul requirement indication of the first node or the backhaul requirement level of the first node has been described above and will not be described here.
  • the system information of the first node in the ninth embodiment further includes an identifier of the third node, and the third node is used to provide a service for the first node.
  • the third node may be an evolved base station (evolved Node B: eNB).
  • FIG. 10 is a schematic structural diagram of a user equipment UE according to Embodiment 6 of the present invention. As shown in FIG. 10, the UE further includes: a detection module 14.
  • the detecting module 14 is configured to detect the current signal quality of the first node.
  • the determining module 11 is specifically configured to: if the first node meets the access condition, the UE determines that the first node is the access node of the UE.
  • the access conditions include:
  • the backhaul requirement information of the first node meets the preset condition, the current signal quality of the first node measured by the UE is greater than a threshold, and the identifier of the second node is the same as the identifier of the third node.
  • a feasible implementation manner in which the UE determines that the current signal quality of the first node is greater than the threshold is described in detail in step 101a above, and details are not described herein again.
  • the identifier of the second node is the same as the identifier of the third node, indicating that the second node serving the UE is the same network node as the third node serving the first node, that is, the third node is the second node. node. In this way, when the backhaul link is established, the establishment of the backhaul link between multiple second nodes is not performed, unnecessary interaction is avoided, and network resources are saved.
  • the UE 3 is connected as a relay node to the fourth node 4 and the second node 2, wherein the fourth node 4 is also an LPN.
  • the UE 3 has been associated with the second node 2 and the fourth node 4.
  • a dual connection is established to form a backhaul link, that is, UE 3 has transmitted data between the second node 2 and the fourth node 4 as a relay node.
  • the first node 1 establishes a multi-hop backhaul link with the second node 2 through other network nodes, or directly establishes a backhaul link with the second node 2.
  • the first node 1 and the second node 2 also have a backhaul link, and the backhaul load level of the first node 1 is too high.
  • the backhaul requirement information of the first node in the ninth embodiment satisfies the preset condition, and specifically includes the following two methods:
  • Manner 1 The backhaul demand level of the first node is greater than the first preset threshold, and the backhaul demand level of the fourth node is less than the second preset threshold;
  • the second embodiment has been specifically described in the second embodiment, and details are not described herein again.
  • mode 2 The backhaul demand level of the first node is greater than the backhaul demand level of the fourth node.
  • the second embodiment has been specifically described in the second embodiment, and details are not described herein again.
  • the receiving module 13 in the ninth embodiment is further configured to receive the backhaul establishment indication information sent by the second node, and complete the foregoing according to the backhaul establishment indication information. Before the backhaul link configuration of the node and the second node, receiving the link release indication information sent by the second node, and releasing the connection between the UE and the fourth node according to the link release indication information .
  • the second node after receiving the request message sent by the UE, the second node needs to detect the UE.
  • the fourth node currently connected has a plurality of backhaul links with the second node. If there is only one backhaul link established by the UE between the fourth node and the second node, the second node does not instruct the UE to establish and first.
  • the backhaul link of the node Because if the UE wants to establish a backhaul link with the first node, the UE must first disconnect the backhaul link with the fourth node, so that the fourth node will lose the backhaul link with the second node, causing the user under the fourth node. Communication is interrupted.
  • the second node determines according to the identifier of the first node, the backhaul requirement level of the first node, and the current resource usage. If the establishment condition is met, Instructing the UE to establish a release connection with the fourth node while establishing a backhaul link between the second node and the first node.
  • the UE 3 is only connected to the second node 2, and the first node 1 is connected to the second node 2 through other backhaul links.
  • the specific backhaul link may be a backhaul link established by other UEs, or The backhaul link formed by the first node 1 and the second node 2 may also be directly connected.
  • the backhaul requirement information of the first node in the ninth embodiment meets the preset condition, and includes:
  • the system information of the first node carries a backhaul demand indication of the first node.
  • the UE 3 is connected to the second node 2 on one side, and the first node 1, the fourth node 4, and the second node 2 both have a connection of a backhaul link, wherein the fourth node 4 is also LPN.
  • the load level of the first node 1 and the second node 2 backhaul link is significantly higher than the load level of the fourth node 4 and the second node 2 backhaul link.
  • the backhaul requirement information of the first node in the foregoing embodiment ninth meets the preset condition, and the method includes: the backhaul requirement level of the first node is greater than the backhaul requirement level of the fourth node received by the UE.
  • the backhaul requirement level of the fourth node may also be implemented in a manner similar to the method of the embodiment 100.
  • UE 3 is connected to the second node 2 on one side, and the first node 1 does not establish any connection with any eNB, and it is in an isolated state, and data communication cannot be performed.
  • the first node of class 1 has the highest access level.
  • the UE determines that the first node is the access node of the UE, and specifically includes:
  • first detection module 14 detects the current signal quality of the first node.
  • the access level of the first node is set to the highest access level, and when the current signal quality of the first node is greater than the preset threshold, the determining module 11 determines the first node. As the access node of the UE.
  • the system information of the first node includes a backhaul demand level of the first node or a backhaul demand indication of the first node.
  • connection module is configured to reside at the second node and establish an RRC connection with the second node before the obtaining module 10 acquires system information of the first node.
  • the receiving module 13 is further configured to receive measurement control information of the second node, where the measurement control information indicates that the UE periodically reads system information of the first node and measures signal quality of the first node.
  • FIG. 1 is a schematic structural diagram of a node according to Embodiment 7 of the present invention.
  • the specific node may be the first node in Embodiment 6 above, and the node may be an LPN.
  • the node includes: a measurement module 20, a determination module 21, a broadcast module 22, and an establishment module 23.
  • the measuring module 20 is configured to measure load information of the first node.
  • the determining module 21 is configured to determine system information of the first node according to load information of the first node.
  • the system information of the first node includes backhaul requirement information of the first node.
  • the broadcast module 22 is configured to broadcast the system information of the first node, so that the UE acquires system information of the first node, and determines, according to the backhaul requirement information of the first node, the first node as the access node of the UE.
  • the establishing module 23 is configured to establish a backhaul link between the UE and the second node by using the first node. Specifically, a feasible implementation manner is: the RRC establishment sent by the receiving UE of the first node The setup request, the establishment module 23 establishes a backhaul link through the UE and the second node according to the RRC setup request.
  • the load information of the first node is measured by the measurement module, and then the determining module determines the system information of the first node according to the load information of the first node, and finally the broadcast module includes the first node.
  • the system information of the backhaul requirement information is broadcasted, so that the UE acquires the system information of the first node, and determines, according to the backhaul requirement information of the first node, the first node as the access node of the UE, and finally establishes a module for establishing the A node passes the backhaul link between the UE and the second node.
  • the backhaul requirement information of the first node is a backhaul requirement indication of the first node or a backhaul requirement level of the first node.
  • the determining module 21 of the node in the eleventh embodiment is used according to the first node.
  • the load information determines a backhaul requirement level of the first node, and the first node broadcasts system information of the first node;
  • the system information of the first node includes a backhaul requirement level of the first node and an identifier of the third node;
  • the third node is used to provide services for the first node.
  • the backhaul requirement level of the first node needs to be compared with the backhaul requirement level of the fourth node, when the first After the backhaul requirement level of the node meets the corresponding preset condition, the UE uses the first node as the access node of the UE, and then establishes a backhaul link between the first node and the second node through subsequent interaction between the UE and the second node. .
  • the broadcast module 22 of the node in the eleventh embodiment is configured to: if the load information of the first node is greater than the load threshold, the first The node broadcasts the system information of the first node.
  • the system information of the first node includes the backhaul requirement indication of the first node, and the identifier of the third node.
  • the third node is used to provide services for the first node.
  • the broadcast module 22 of the node in the eleventh embodiment is configured to measure that the first node is not connected to the third node, and the first The node broadcasts the system information of the first node.
  • the system information of the first node includes a backhaul demand level of the first node or a backhaul demand indication of the first node.
  • FIG. 12 is a schematic structural diagram of a node according to Embodiment 8 of the present invention.
  • the node may be a second node in an embodiment, and the node may be an eNB.
  • the node includes: a receiving module 30, a determining module 31, and a sending module 32.
  • the receiving module 30 is configured to receive request information sent by the user equipment UE.
  • the request information includes backhaul capacity improvement information and an identifier of the first node, where the backhaul capacity improvement information may be a backhaul demand indication of the first node or a backhaul demand level of the first node.
  • the determining module 31 is configured to determine the backhaul establishment indication information according to the backhaul capacity promotion information and the identifier of the first node.
  • the sending module 32 is configured to send backhaul indication information to the UE.
  • the backhaul establishment indication information includes RRC configuration information required by the UE to establish a backhaul link with the first node and the second node.
  • the receiving module 30 is further configured to receive the backhaul establishment information sent by the UE, and establish, by the backhaul establishment completion information, the backhaul link of the first node by using the UE and the second node.
  • the receiving module receives the request information sent by the user equipment UE, and the determining module determines the backhaul establishment indication information according to the backhaul capacity enhancement information and the identifier of the first node, and finally the sending module sends the request information to the UE.
  • the backhaul establishes the indication information, so that the UE completes the backhaul link configuration of the first node and the second node according to the backhaul establishment indication information, and finally the receiving module receives the backhaul setup completion information sent by the UE, and establishes the first node according to the backhaul establishment completion information. Passing a backhaul link between the UE and the second node.
  • the backhaul capacity increase information may be a backhaul demand indication of the first node or a backhaul demand level of the first node.
  • FIG. 13 is a schematic structural diagram of a node according to Embodiment 9 of the present invention. As shown in FIG. 13, the node further includes: an establishing module 33.
  • the establishing module 33 is configured to establish an RRC connection with the UE before the receiving module 30 receives the request information sent by the UE.
  • the sending module 32 is further configured to send the measurement control information to the UE, so that the UE periodically reads the system information of the first node according to the measurement control information, and measures the signal quality of the first node, and implements the method according to FIG. 2 to FIG.
  • Example 10 protects a system for establishing a backhaul link, which includes:
  • the user equipment UE of the structure shown in FIG. 10 the UE can perform the corresponding scheme of FIG. 1 to implement the technical effects similar to those of Embodiment 1 to Embodiment 5.
  • the node of the structure shown in FIG. 11 is capable of performing the corresponding scheme of FIG. 6 to achieve the technical effect similar to that of the second embodiment.
  • the node of the structure shown in FIG. 12 and FIG. 13 can perform the corresponding scheme of FIG. 7 to achieve the technical effect similar to that of the third embodiment.
  • FIG. 14 is a schematic structural diagram of a user equipment UE according to Embodiment 11 of the present invention.
  • the UE has dual connectivity capability, that is, two network nodes can be connected at the same time. It can be used to perform the corresponding method in FIG. 1 above.
  • the UE includes: a receiver 40, a processor 41, and a transmitter 42.
  • the processor 41 is configured to acquire system information of the first node.
  • the system information of the first node includes backhaul requirement information of the first node, and the backhaul requirement information of the first node is used to indicate that the first node has a requirement for establishing a backhaul link with the second node.
  • the processor 41 is further configured to determine, according to the backhaul requirement information of the first node and the current signal quality of the first node, the first node as an access node of the UE.
  • the transmitter 42 is configured to send the request information to the second node.
  • the request information includes the backhaul capacity improvement information and the identifier of the first node, so that the second node determines the backhaul establishment indication information according to the backhaul capacity promotion information and the identifier of the first node.
  • the receiver 40 is configured to receive the backhaul establishment indication information sent by the second node, and complete the backhaul link configuration of the first node by using the UE and the second node according to the backhaul establishment indication information. Specifically, the UE completes the backhaul link configuration of the first node and the second node according to the backhaul establishment indication information, and establishes a backhaul link between the first node and the second node by using the UE as a relay.
  • the backhaul establishment indication information includes radio resource control protocol (Radio Resource Control, RRC) configuration information required by the UE to establish a backhaul link with the first node and the second node.
  • RRC Radio Resource Control
  • the second node is used to provide services for the UE.
  • the system information of the first node is obtained by the processor, the system information of the first node includes backhaul requirement information of the first node, and the backhaul requirement information of the first node is used to represent the first node.
  • the processor determines, by the processor, the first node as the access node of the UE according to the backhaul requirement information of the first node and the current signal quality of the first node, where the transmitter sends the second node And the request information includes the backhaul capacity improvement information and the identifier of the first node, so that the second node determines the backhaul establishment indication information according to the backhaul capacity promotion information and the identifier of the first node, and finally the receiver receives the backhaul establishment sent by the second node.
  • the transmitter 42 is further configured to receive the backhaul establishment indication information sent by the second node at the receiver 40, and complete the backhaul link configuration of the first node and the second node according to the backhaul establishment indication information, and then go to the second The node sends backhaul setup complete information, so that the second node establishes a backhaul link between the UE and the second node by the first node according to the backhaul setup complete information.
  • the backhaul requirement information of the first node may specifically be a backhaul demand indication of the first node or a backhaul demand level of the first node.
  • the backhaul capacity upgrade information in the first embodiment is specifically the backhaul demand indication of the first node or the backhaul demand level of the first node. The specific implementation of the backhaul requirement indication for the first node or the backhaul requirement level of the first node has been described above and will not be described here.
  • the system information of the first node further includes an identifier of the third node, and the third node is used to provide a service for the first node.
  • the third node may be an evolved base station (evolved Node B: eNB).
  • the processor 41 is further configured to detect a current signal quality of the first node.
  • the processor 41 is specifically configured to determine that the first node is an access node of the UE if the first node meets the access condition.
  • the access conditions include:
  • the backhaul requirement information of the first node meets the preset condition, the current signal quality of the first node measured by the UE is greater than a threshold, and the identifier of the second node is the same as the identifier of the third node.
  • the identifier of the second node is the same as the identifier of the third node, indicating that the second node serving the UE is the same network node as the third node serving the first node, that is, the third node is the second node. node. In this way, when the backhaul link is established, the establishment of the backhaul link between multiple second nodes is not performed, unnecessary interaction is avoided, and network resources are saved.
  • the UE 3 is connected as a relay node to the fourth node 4 and the second node 2, wherein the fourth node 4 is also an LPN.
  • the UE 3 has been associated with the second node 2 and the fourth node 4.
  • a dual connection is established to form a backhaul link, that is, UE 3 has transmitted data between the second node 2 and the fourth node 4 as a relay node.
  • the first node 1 establishes a multi-hop backhaul link with the second node 2 through other network nodes, or directly establishes a backhaul link with the second node 2.
  • the first node 1 and the second node 2 also have a backhaul link, and the backhaul load level of the first node 1 is too high.
  • the backhaul requirement information of the first node meets the preset condition, and specifically includes the following two methods:
  • Manner 1 The backhaul demand level of the first node is greater than the first preset threshold, and the backhaul demand level of the fourth node is less than the second preset threshold;
  • the second embodiment has been specifically described in the second embodiment, and details are not described herein again.
  • mode 2 The backhaul demand level of the first node is greater than the backhaul demand level of the fourth node.
  • the second embodiment has been specifically described in the second embodiment, and details are not described herein again.
  • the receiver 40 is further configured to receive the second node. Sending the backhaul establishment indication information, and receiving the link release indication information sent by the second node, and releasing the UE according to the link release indication information, before completing the backhaul link configuration of the first node and the second node according to the backhaul establishment indication information The connection of the fourth node.
  • the second node after receiving the request message sent by the UE, the second node needs to detect that the fourth node currently connected by the UE has several backhaul links, and if there is only one pass between the fourth node and the second node, The backhaul link established by the UE, the second node does not instruct the UE to establish a backhaul link with the first node. Because if the UE wants to establish a backhaul link with the first node, the UE must first disconnect the backhaul link with the fourth node, so that the fourth node will lose the backhaul link with the second node, causing the user under the fourth node. Communication is interrupted.
  • the second node determines according to the identifier of the first node, the backhaul requirement level of the first node, and the current resource usage. If the establishment condition is met, Indication
  • the UE establishes a release connection with the fourth node, and establishes a backhaul link between the second node and the first node.
  • the UE 3 is only connected to the second node 2, and the first node 1 is connected to the second node 2 through other backhaul links.
  • the specific backhaul link may be a backhaul link established by other UEs, or The backhaul link formed by the first node 1 and the second node 2 may also be directly connected.
  • the backhaul requirement information of the first node meets the preset condition, and includes:
  • the system information of the first node carries a backhaul demand indication of the first node.
  • the UE 3 is connected to the second node 2 on one side, and the first node 1, the fourth node 4, and the second node 2 both have a connection of a backhaul link, wherein the fourth node 4 is also LPN.
  • the load level of the first node 1 and the second node 2 backhaul link is significantly higher than the load level of the fourth node 4 and the second node 2 backhaul link.
  • the backhaul requirement information of the first node meets the preset condition, and the method includes: the backhaul requirement level of the first node is greater than the backhaul requirement level of the fourth node received by the UE.
  • the backhaul requirement level of the fourth node may also be implemented by a method similar to the embodiment 100. Refer to Example 5 above.
  • the UE 3 is connected to the second node 2 on one side, and the first node 1 does not establish any connection with any eNB, and is in an isolated state, and data communication cannot be performed.
  • the highest access level is the highest access level.
  • the UE determines that the first node is the access node of the UE, and specifically includes:
  • First processor 41 detects the current signal quality of the first node.
  • the access level of the first node is set to the highest access level, and when the current signal quality of the first node is greater than the preset threshold, the processor 41 determines the first node. As the access node of the UE.
  • the system information of the first node includes a backhaul demand level of the first node or a backhaul demand indication of the first node.
  • the processor 41 is further configured to: before the processor 41 acquires system information of the first node, camp on the second node, and establish an RRC connection with the second node.
  • the receiver 40 is further configured to receive measurement control information of the second node, where the measurement control information indicates that the UE periodically reads system information of the first node and measures signal quality of the first node.
  • FIG. 15 is a schematic structural diagram of a node according to Embodiment 12 of the present invention.
  • the specific node may be the first node in Embodiment 6 above, and the node may be an LPN.
  • the node includes: a processor 50 and a transmitter 51.
  • the processor 50 is configured to measure load information of the first node.
  • the processor 50 is further configured to determine system information of the first node according to load information of the first node.
  • the system information of the first node includes backhaul requirement information of the first node.
  • the transmitter 51 is configured to broadcast the system information of the first node, so that the UE acquires system information of the first node, and determines, according to the backhaul requirement information of the first node, the first node as the access node of the UE.
  • a feasible implementation manner is: the first node receives the RRC setup request sent by the UE, and the processor 50 establishes a backhaul link between the UE and the second node according to the RRC setup request.
  • the processor 50 is further configured to establish a backhaul link between the UE and the second node by using the UE.
  • the load information of the first node is measured by the processor, and then the processor determines the system information of the first node according to the load information of the first node, and finally the transmitter includes the first node.
  • the system information of the backhaul requirement information is broadcasted, so that the UE acquires the system information of the first node, and determines, according to the backhaul requirement information of the first node, the first node as the access node of the UE, and the final processor is also used to establish The first node passes the backhaul link between the UE and the second node.
  • the backhaul requirement information of the first node is a backhaul requirement indication of the first node or a backhaul requirement level of the first node.
  • the processor 50 of the node is configured to determine the first node according to the load information of the first node in the scenario of the first embodiment and the fourth embodiment.
  • the backhaul requirement level, the transmitter 51 broadcasts the system information of the first node;
  • the system information of the first node includes a backhaul requirement level of the first node and an identifier of the third node;
  • the third node is used to provide services for the first node.
  • the backhaul requirement level of the first node needs to be compared with the backhaul requirement level of the fourth node, when the first After the backhaul requirement level of the node meets the corresponding preset condition, the UE uses the first node as the access node of the UE, and then establishes a backhaul link between the first node and the second node through subsequent interaction between the UE and the second node. .
  • the transmitter 51 of the node is configured to: if the load information of the first node is greater than the load threshold, the transmitter 51 sends the system information of the first node. Information broadcast.
  • the system information of the first node includes the backhaul requirement indication of the first node and the identifier of the third node. It should be noted that the third node is used to provide services for the first node.
  • the transmitter 51 of the node is configured to measure that the first node is not connected to the third node, and the transmitter 51 broadcasts the system information of the first node.
  • the system information of the first node includes a backhaul demand level of the first node or a backhaul demand indication of the first node.
  • FIG. 16 is a schematic structural diagram of a node according to Embodiment 13 of the present invention.
  • the node may be a second node in an embodiment, and the node may be an eNB.
  • the node includes: a receiver 60, a processor 61, and a transmitter 62.
  • the receiver 60 is configured to receive request information sent by the user equipment UE.
  • the request information includes backhaul capacity improvement information and an identifier of the first node, where the backhaul capacity improvement information may be a backhaul demand indication of the first node or a backhaul demand level of the first node.
  • the processor 61 is configured to determine backhaul establishment indication information according to the backhaul capacity promotion information and the identifier of the first node.
  • the transmitter 62 is configured to send backhaul indication information to the UE.
  • the backhaul establishment indication information includes RRC configuration information required by the UE to establish a backhaul link with the first node and the second node.
  • the receiver 60 is further configured to receive backhaul completion information sent by the UE, and establish, by the backhaul establishment information, a backhaul link of the first node by using the UE and the second node.
  • the receiver receives the request information sent by the user equipment UE, and then the processor determines the backhaul establishment indication information according to the backhaul capacity enhancement information and the identifier of the first node, and finally the transmitter sends the request information to the UE.
  • the backhaul establishes the indication information, so that the UE completes the backhaul link configuration of the first node and the second node according to the backhaul establishment indication information, and the receiver receives the backhaul setup completion information sent by the UE, and establishes the first node according to the backhaul establishment completion information.
  • a backhaul link between the UE and the second node.
  • the backhaul capacity increase information may be the backhaul demand indication of the first node or the backhaul demand level of the first node.
  • the processor 61 is further configured to establish an RRC connection with the UE before the receiver 60 receives the request information sent by the UE.
  • the transmitter 62 is further configured to send measurement control information to the UE, so that the UE periodically reads the system information of the first node according to the measurement control information and measures the signal quality of the first node.

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Abstract

本发明提供一种建立回程链路方法、装置及系统,其中,建立回程链路方法包括: UE获取第一节点广播的包含第一节点的回程需求信息的系统信息, UE根据第一节点的回程需求信息以及第一节点的当前信号质量确定第一节点作为 UE的接入节点;UE向第二节点发送请求信息,以使第二节点根据请求信息中的回程容量提升信息和第一节点的标识确定回程建立指示信息;UE接收第二节点发送的回程建立指示信息,并根据回程建立指示信息完成第一节点通过 UE与第二节点的回程链路配置;实现了通过具有中继能力的 UE,为负载过高的第一节点建立与第二节点新的回程链路,使得在不影响用户的业务体验的前提下,降低了第一节点过高的负载。

Description

技术领域 本发明涉及通信技术, 尤其涉及一种建立回程链路方法、 装置及系统。 背景技术
长期演进网络 (Long Term Evolved, 简称: LTE) 是目前第三代合作 伙伴计戈 U ( 3rd Generation Partnership Program, 简称: 3GPP ) 组织中各厂 商积极研究的一种移动通信网络, 是通用移动通信系统(Universal Mobile Telecommunication System, 简称: UMTS ) 的演进网络。 为了应对移动数 据业务流量的急剧增长, 运营商提出了部署小小区, 希望通过部署小小区 来应对移动业务流量的激增, 用户可以在小小区内享受高速率的数据业 务,特别是室内或室外的热点场景。小小区部署使用的是低功率节点(Low Power Node, 简称: LPN) , 该类节点的发射功率要小于宏基站。 LPN可 以是微基站 (Pico ) 、 家庭基站 (Femto ) 、 中继节点 (Relay) 等等, 其 中 LPN与用户设备(User Equipment, 简称: UE )之间的链路称为接入链 路、 LPN与 eNB之间的链路称为回程链路。 在未来的技术发展中, 小小 区的密集化部署是 LTE的一个重要场景。在该场景下, 小小区覆盖半径变 小, 其覆盖下的用户数越少。 用户设备的移动性以及使用业务种类的随机 性变化使得小小区的业务波动性变化明显。这就造成了网络对于小小区回 程容量的需求也存在明显的波动。 当小小区覆盖下的用户使用大流量业务 时, 会造成小小区回程容量受限。
现有技术中, 当 LPN 的回程容量受限时, 即回程链路负载过高时, LPN会与 eNB交互当前的负载信息。 如果 eNB负载相对较低的话, LPN 将其覆盖下的部分处于连接态的 UE切换到 eNB下, 此外, LPN还可以使 其覆盖下的部分处于空闲态的 UE通过小区重选驻留到其他小区。 通过减 少用户数的方法减少业务量, 可以降低回程链路的负载。
但是, 在现有技术中, 空闲态的 UE在进行小区重选的过程中需要扫 描邻区信息, 这会增加耗电量。 连接态的 UE执行小区切换流程时也会出 现业务中断及时延。 因此, 当 LPN 的回程容量受限时, 通过现有技术的 处理会降低 UE传输数据时的稳定性。 发明内容
本发明提供一种建立回程链路方法、 装置及系统, 能够实现在不影响 用户的业务体验的前提下, 降低节点过高的负载。
本发明的第一方面是提供一种建立回程链路方法, 包括:
用户设备 UE获取第一节点的系统信息, 所述第一节点的系统信息包 含第一节点的回程需求信息, 所述第一节点的回程需求信息用于表示所述 第一节点具有与第二节点建立回程链路的需求;
所述 UE根据所述第一节点的回程需求信息以及所述第一节点的当前 信号质量确定所述第一节点作为所述 UE的接入节点;
所述 UE向第二节点发送请求信息, 所述请求信息包含所述回程容量 提升信息和第一节点的标识, 以使所述第二节点根据所述回程容量提升信 息和所述第一节点的标识确定回程建立指示信息;
所述 UE接收所述第二节点发送的所述回程建立指示信息, 并根据所 述回程建立指示信息完成所述第一节点与所述第二节点的回程链路配置; 其中, 所述第二节点用于为所述 UE提供服务。
结合第一方面, 在第一种可能的实现方式中, 在所述 UE接收所述第 二节点发送的所述回程建立指示信息, 并根据所述回程建立指示信息完成 所述第一节点通过所述 UE与所述第二节点的回程链路配置之后,还包括: 所述 UE向所述第二节点发送回程建立完成信息, 以使所述第二节点 根据所述回程建立完成信息建立所述第一节点通过所述 UE与所述第二节 点的回程链路。
结合第一方面以及第一方面的第一种可能的实现方式, 在第二种可能 的实现方式中, 所述第一节点的回程需求信息为所述第一节点的回程需求 指示或所述第一节点的回程需求等级;
所述回程容量提升信息为所述第一节点的回程需求指示或所述第一 节点的回程需求等级。
结合第一方面或第一方面的上述可能的实现方式, 在第三种可能的实 现方式中, 所述回程建立指示信息包含所述 UE建立与所述第一节点及所 述第二节点回程链路所需要的无线资源控制协议 RRC配置信息。
结合第一方面或第一方面的上述可能的实现方式, 在第四种可能的实 现方式中, 所述第一节点的系统信息还包含第三节点的标识, 所述第三节 点用于为所述第一节点提供服务;
所述根据所述第一节点的回程需求信息以及第一节点的信号质量确 定所述第一节点作为所述 UE的接入节点, 包括:
若所述第一节点满足接入条件, 则所述 UE确定所述第一节点作为所 述 UE的接入节点;
其中, 所述接入条件包括:
所述第一节点的所述回程需求信息满足预设条件、 所述 UE测得所述第 一节点的当前信号质量大于阈值和所述第二节点的标识与所述第三节点的标 识相同。
结合第一方面的第四种可能的实现方式, 在第五种可能的实现方式 中, 若所述 UE作为中继节点分别连接至第四节点及所述第二节点, 则所 述所述第一节点的所述回程需求信息满足预设条件, 包括:
所述第一节点的所述回程需求等级大于第一预设门限, 且所述第四节 点的所述回程需求等级小于第二预设门限; 或者,
所述第一节点的所述回程需求等级大于所述第四节点的所述回程需 求等级。
结合第一方面的第五种可能的实现方式, 在第六种可能的实现方式 中, 在所述 UE接收所述第二节点发送的回程建立指示信息, 并根据所述 回程建立指示信息完成所述第一节点与所述第二节点的回程链路配置之 前, 还包括:
所述 UE接收所述第二节点发送的链路释放指示信息, 并根据所述链 路释放指示信息释放所述 UE与所述第四节点的连接。
结合第一方面的第四种可能的实现方式, 在第七种可能的实现方式 中, 若所述 UE单侧连接所述第二节点, 则所述第一节点的所述回程需求 信息满足预设条件, 包括:
所述第一节点的所述回程需求等级大于所述 UE接收到的第四节点的所 述回程需求等级; 或者, 所述第一节点的系统信息中携带有所述第一节点的回程需求指示。 结合第一方面或第一方面的第一种至第三种可能的实现方式, 在第八 种可能的实现方式中, 所述根据所述第一节点的系统信息以及第一节点的 信号质量确定所述第一节点作为所述 UE的接入节点, 包括:
所述 UE测得的所述第一节点的当前信号质量大于预设阈值;
所述第一节点的系统信息包含所述第一节点的回程需求等级或者所 述第一节点的的回程需求指示。
结合第一方面或第一方面的上述可能的实现方式, 在第九种可能的实 现方式中, 在所述用户设备 UE获取第一节点的系统信息之前, 还包括: 所述 UE驻留在所述第二节点, 并建立与所述第二节点的 RRC连接; 所述 UE接收所述第二节点的测量控制信息, 所述测量控制信息指示 所述 UE周期性读取所述第一节点的系统信息并测量所述第一节点的信号 质量。
本发明的第二方面是提供一种建立回程链路方法, 包括:
第一节点测量所述第一节点的负载信息;
所述第一节点根据所述第一节点的负载信息确定所述第一节点的系 统信息, 所述第一节点的系统信息包含所述第一节点的回程需求信息; 所述第一节点将所述第一节点的系统信息进行广播, 以使所述 UE获 取所述第一节点的系统信息, 并根据所述第一节点的回程需求信息确定将 所述第一节点作为所述 UE的接入节点;
所述第一节点建立所述第一节点通过所述 UE与所述第二节点的回程 链路。
结合第二方面, 在第一种可能的实现方式中, 所述第一节点的回程需 求信息为所述第一节点的回程需求指示或所述第一节点的回程需求等级。
结合第二方面或第二方面的第一种可能的实现方式, 在第二种可能的 实现方式中, 所述所述第一节点将所述第一节点的系统信息进行广播, 包 括:
若所述第一节点的负载信息大于负载阈值, 则所述第一节点将所述第 一节点的系统信息广播;
所述第一节点的系统信息包含所述第一节点的回程需求指示、第三节 点的标识;
所述第 节点用于为所述第一节点提供服务。
结合第 方面或第二方面的第一种可能的实现方式, 在第三种可能的 实现方式中 所述所述第一节点将所述第一节点的系统信息进行广播, 包 括:
所述第一 -节点根据所述第一节点的负载信息确定所述第一节点的回 程需求等级, 所述第一节点将所述第一节点的系统信息广播;
所述第一节点的系统信息包含所述第一节点的回程需求等级、第三节 点的标识;
所述第三节点用于为所述第一节点提供服务。
结合第二 方面或第二方面的第一种可能的实现方式, 在第四种可能的 实现方式中, 所述所述第一节点将所述第一节点的系统信息进行广播, 包 括:
所述第一节点测量到所述第一节点未与第三节点连接, 所述第一节点 将所述第一节点的系统信息广播;
所述第一节点的系统信息包含所述第一节点的回程需求等级或者所 述第一节点的回程需求指示。
本发明的第三方面是提供一种建立回程链路方法, 包括:
第二节点接收用户设备 UE发送的请求信息, 所述请求信息包含回程 容量提升信息和第一节点的标识;
所述第二节点根据所述回程容量提升信息和所述第一节点的标识确 定回程建立指示信息;
所述第二节点向所述 UE发送所述回程建立指示信息, 所述回程建立 指示信息包含所述 UE建立与所述第一节点及所述第二节点回程链路所需 要的无线资源控制协议 RRC配置信息;
所述第二节点接收所述 UE发送的回程建立完成信息, 根据所述回程 建立完成信息建立所述第一节点通过所述 UE 与所述第二节点的回程链 路。
结合第三方面, 在第一种可能的实现方式中, 所述回程容量提升信息 为所述第一节点的回程需求指示或所述第一节点的回程需求等级。 结合第三方面或第三方面的第一种可能的实现方式, 在第二种可能的 实现方式中, 在所述第二节点接收用户设备 UE发送的请求信息之前, 还 包括:
所述第二节点建立与所述 UE的 RRC连接;
所述第二节点向所述 UE发送测量控制信息, 以使所述 UE根据所述 测量控制信息周期性读取所述第一节点的系统信息并测量所述第一节点 的信号质量。
本发明的第四方面是提供一种用户设备 UE, 包括:
获取模块, 用于获取第一节点的系统信息, 所述第一节点的系统信息 包含第一节点的回程需求信息, 所述第一节点的回程需求信息用于表示所 述第一节点具有与第二节点建立回程链路的需求;
确定模块, 用于根据所述第一节点的回程需求信息以及第一节点的当 前信号质量确定所述第一节点作为 UE的接入节点;
发送模块, 用于向第二节点发送请求信息, 所述请求信息包含所述回 程容量提升信息和第一节点的标识, 以使所述第二节点根据所述回程容量 提升信息和所述第一节点的标识确定回程建立指示信息;
接收模块, 用于接收所述第二节点发送的所述回程建立指示信息, 并 根据所述回程建立指示信息完成所述第一节点与所述第二节点的回程链 路配置;
其中, 所述第二节点用于为所述 UE提供服务。
结合第四方面, 在第一种可能的实现方式中, 所述发送模块, 还用于 在所述接收模块接收所述第二节点发送的所述回程建立指示信息, 并根据 所述回程建立指示信息完成所述第一节点与所述第二节点的回程链路配 置之后, 向所述第二节点发送回程建立完成信息, 以使所述第二节点根据 所述回程建立完成信息建立所述第一节点通过所述 UE与所述第二节点的 回程链路。
结合第四方面以及第四方面的第一种可能的实现方式, 在第二种可能 的实现方式中, 所述第一节点的回程需求信息为所述第一节点的回程需求 指示或所述第一节点的回程需求等级;
所述回程容量提升信息为所述第一节点的回程需求指示或所述第一节 点的回程需求等级。
结合第四方面或第四方面的上述可能的实现方式, 在第三种可能的实 现方式中, 所述回程建立指示信息包含所述 UE建立与所述第一节点及所 述第二节点回程链路所需要的无线资源控制协议 RRC配置信息。
结合第四方面或第四方面的上述可能的实现方式, 在第四种可能的实 现方式中, 还包括:
检测模块, 用于检测所述第一节点的当前信号质量;
所述第一节点的系统信息还包含第三节点的标识, 所述第三节点用于 为所述第一节点提供服务;
所述确定模块, 具体用于若所述第一节点满足接入条件, 则确定所述 第一节点作为所述 UE的接入节点;
其中, 所述接入条件包括:
所述第一节点的所述回程需求信息满足预设条件、 所述第一节点的当前 信号质量大于阈值和所述第二节点的标识与所述第三节点的标识相同。
结合第四方面或第四方面的第四种可能的实现方式, 在第五种可能的 实现方式中, 若所述 UE作为中继节点分别连接至第四节点及所述第二节 点, 则所述第一节点的所述回程需求信息满足预设条件, 包括:
所述第一节点的所述回程需求等级大于第一预设门限, 且所述第四节 点的所述回程需求等级小于第二预设门限; 或者,
所述第一节点的所述回程需求等级大于所述第四节点的所述回程需 求等级。
结合第四方面或第四方面的第五种可能的实现方式, 在第六种可能的 实现方式中,
所述接收模块, 还用于在接收所述第二节点发送的回程建立指示信 息, 并根据所述回程建立指示信息完成所述第一节点与所述第二节点的回 程链路配置之前, 接收所述第二节点发送的链路释放指示信息, 并根据所 述链路释放指示信息释放所述 UE与所述第四节点的连接。
结合第四方面或第四方面的第四种可能的实现方式, 在第七种可能的 实现方式中, 若所述 UE单侧连接所述第二节点, 则所述第一节点的所述 回程需求信息满足预设条件, 包括: 所述第一节点的所述回程需求等级大于所述 UE接收到的第四节点的所 述回程需求等级; 或者,
所述第一节点的系统信息中携带有所述第一节点的回程需求指示。 结合第四方面或第四方面的第一种至第二种可能的实现方式, 在第七 种可能的实现方式中, 还包括:
检测模块, 用于检测所述第一节点的当前信号质量;
所述确定模块,具体用于当所述第一节点的当前信号质量大于预设阈值, 则确定所述第一节点作为所述 UE的接入节点;
所述第一节点的系统信息包含所述第一节点的回程需求等级或者所 述第一节点的的回程需求指示。
结合第四方面或第四方面的上述可能的实现方式, 在第八种可能的实 现方式中, 还包括:
连接模块, 用于在所述获取模块获取第一节点的系统信息之前, 驻留 在所述第二节点, 并建立与所述第二节点的 RRC连接;
所述接收模块, 还用于接收所述第二节点的测量控制信息, 所述测量 控制信息指示所述 UE周期性读取所述第一节点的系统信息并测量所述第 一节点的信号质量。
本发明的第五方面是提供一种节点, 包括:
测量模块, 用于测量所述第一节点的负载信息;
确定模块, 用于根据所述第一节点的负载信息确定所述第一节点的系 统信息, 所述第一节点的系统信息包含所述第一节点的回程需求信息; 广播模块, 用于将所述第一节点的系统信息进行广播, 以使所述 UE 获取所述第一节点的系统信息, 并根据所述第一节点的回程需求信息确定 将所述第一节点作为所述 UE的接入节点;
建立模块, 用于建立所述第一节点通过所述 UE与所述第二节点的回 程链路。
结合第五方面, 在第一种可能的实现方式中, 所述第一节点的回程需 求信息为所述第一节点的回程需求指示或所述第一节点的回程需求等级。
结合第五方面或第五方面的第一种可能的实现方式, 在第二种可能的 实现方式中, 所述广播模块, 具体用于若所述第一节点的负载信息大于负载阈值, 则所述第一节点将所述第一节点的系统信息广播;
所述第一节点的系统信息包含所述第一节点的回程需求指示、第三节 点的标识;
所述第三节点用于为所述第一节点提供服务。
结合第五方面或第五方面的第一种可能的实现方式, 在第三种可能的 实现方式中,
所述广播模块, 具体用于根据所述第一节点的负载信息确定所述第一 节点的回程需求等级, 将所述第一节点的系统信息广播;
所述第一节点的系统信息包含所述第一节点的回程需求等级、第三节 点的标识;
所述第三节点用于为所述第一节点提供服务。
结合第五方面或第五方面的第一种可能的实现方式, 在第四种可能的 实现方式中,
所述广播模块, 具体用于测量到所述第一节点未与第三节点连接, 所 述第一节点将所述第一节点的系统信息广播;
所述第一节点的系统信息包含所述第一节点的回程需求等级或者所 述第一节点的的回程需求指示。
本发明的第六方面是提供一种节点, 包括:
接收模块, 用于接收用户设备 UE发送的请求信息, 所述请求信息包 含回程容量提升信息和第一节点的标识;
确定模块, 用于根据所述回程容量提升信息和所述第一节点的标识确 定回程建立指示信息;
发送模块, 用于向所述 UE发送所述回程建立指示信息, 所述回程建 立指示信息包含所述 UE建立与所述第一节点及所述第二节点回程链路所 需要的无线资源控制协议 RRC配置信息;
所述接收模块, 还用于接收所述 UE发送的回程建立完成信息, 根据 所述回程建立完成信息建立所述第一节点通过所述 UE与所述第二节点的 回程链路。
结合第六方面, 在第一种可能的实现方式中, 所述回程容量提升信息 为所述第一节点的回程需求指示或所述第一节点的回程需求等级。
结合第六方面或第六方面的第一种可能的实现方式, 在第二种可能的 实现方式中, 还包括:
建立模块, 用于在所述接收模块接收用户设备 UE发送的请求信息之 前, 建立与所述 UE的 RRC连接;
所述发送模块, 还用于向所述 UE发送测量控制信息, 以使所述 UE 根据所述测量控制信息周期性读取所述第一节点的系统信息并测量所述 第一节点的信号质量。 本发明的第七方面是提供一种建立回程链路系统, 包括: 上述第四方 面以及第四方面的上述各个可行的实现方式中所述的用户设备; 上述第五 方面以及第五方面的上述各个可行的实现方式中所述的节点; 上述第六方 面以及第六方面的上述各个可行的实现方式中所述的节点。
本发明本实施例提供的建立回程链路方法、 装置及系统, 其中, 通过
UE 获取第一节点的系统信息, 第一节点的系统信息包含第一节点的回程 需求信息, 第一节点的回程需求信息用于表示第一节点具有与第二节点建 立回程链路的需求, 再由 UE根据第一节点的回程需求信息以及第一节点 的当前信号质量确定第一节点作为 UE 的接入节点, UE 向第二节点发送 请求信息, 请求信息包含回程容量提升信息和第一节点的标识, 以使第二 节点根据回程容量提升信息和第一节点的标识确定回程建立指示信息, 最 后 UE接收第二节点发送的回程建立指示信息, 并根据回程建立指示信息 完成第一节点通过 UE与第二节点的回程链路配置, 实现了通过具有中继 能力的 UE, 为负载过高的第一节点建立与第二节点新的回程链路, 从而 使得第一节点可以利用新的回程链路与第二节点进行数据传输, 在不影响 用户的业务体验的前提下, 降低了第一节点过高的负载。 附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案, 下面将对 实施例或现有技术描述中所需要使用的附图做一简单地介绍, 显而易见 地, 下面描述中的附图是本发明的一些实施例, 对于本领域普通技术人员 来讲, 在不付出创造性劳动性的前提下, 还可以根据这些附图获得其他的 附图。 图 1为本发明实施例一提供的一种建立回程链路方法的流程示意图; 图 2为本发明实施例一提供的一种建立回程链路方法的第一种场景示 意图;
图 3为本发明实施例一提供的一种建立回程链路方法的第二种场景示 意图;
图 4为本发明实施例一提供的一种建立回程链路方法的第三种场景示 意图;
图 5为本发明实施例一提供的一种建立回程链路方法的第四种场景示 意图;
图 6为本发明实施例六提供的一种建立回程链路方法的流程示意图图 6为本发明实施例二提供的一种建立回程链路方法的流程示意图;
图 7为本发明实施例三提供的一种建立回程链路方法的流程示意图; 图 8为本发明实施例四提供的一种建立回程链路方法的信令交互示意 图;
图 9为本发明实施例五提供的一种用户设备 UE的结构示意图; 图 10为本发明实施例十提供的一种用户设备 UE的结构示意图图 10 为本发明实施例六提供的一种用户设备 UE的结构示意图;
图 11为本发明实施例七提供的一种节点的结构示意图;
图 12为本发明实施例八提供的一种节点的结构示意图;
图 13为本发明实施例九提供的一种节点的结构示意图;
图 14为本发明实施例十一提供的一种用户设备 UE的结构示意图; 图 15为本发明实施例十二提供的一种节点的结构示意图;
图 16为本发明实施例十三提供的一种节点的结构示意图。 具体实施方式
为使本发明实施例的目的、 技术方案和优点更加清楚, 下面将结合本 发明实施例中的附图, 对本发明实施例中的技术方案进行清楚、 完整地描 述, 显然,所描述的实施例是本发明一部分实施例, 而不是全部的实施例。 基于本发明中的实施例, 本领域普通技术人员在没有做出创造性劳动前提 下所获得的所有其他实施例, 都属于本发明保护的范围。
图 1为本发明实施例一提供的一种建立回程链路方法的流程示意图, 其执行主体为具有中继能力的 UE。 该类 UE具备双连接能力, 即可以同 时连接两个网络节点。 最初, 第一节点与第二节点通过其他回程链路传输 数据,其中第一节点可以为低功率节点(Lower Power Node,简称: LPN), 进一歩的, 该低功率节点可以为微基站 (Pico) 、 家庭基站 (Femto ) 、 中 继节点 (Relay) 等等, 第二节点可以为演进型基站 ( evolved Node B, 简 称: eNB ) 。 该其他回程链路可以是直连链路, 也可以多跳链路。 当该其 他回程链路负载过高, 第二节点指示该 UE建立与第二节点及第一节点的 回程链路。 从而在第一节点与第二节点之间增加了一条回程链路, 网络可 利用该 UE作为中继, 通过新增的该回程链路传输第一节点与第二节点之 间的数据。 本发明实施例通过动态增加该类链路的方法来提高回程容量, 从而解决回程链路负载过高的问题, 同时也不影响用户的业务体验。 如图 1所示, 一种建立回程链路方法包括如下歩骤:
歩骤 100、 用户设备 UE获取第一节点的系统信息。
具体的, 第一节点的系统信息包含第一节点的回程需求信息, 第一节 点的回程需求信息用于表示第一节点具有与第二节点建立回程链路的需 求。
歩骤 101、UE根据第一节点的回程需求信息以及第一节点的当前信号 质量确定第一节点作为 UE的接入节点。
歩骤 102、 UE向第二节点发送请求信息。
具体的, 请求信息包含回程容量提升信息和第一节点的标识, 以使第 二节点根据回程容量提升信息和第一节点的标识确定回程建立指示信息。
歩骤 103、 UE接收第二节点发送的回程建立指示信息, 并根据回程建 立指示信息完成第一节点通过所述 UE与第二节点的回程链路配置。
具体的, UE 根据回程建立指示信息完成第一节点与第二节点的回程 链路配置建立了以 UE为中继, 第一节点与第二节点之间的回程链路。
需要说明的是, 回程建立指示信息包含 UE建立与第一节点及第二节 点回程链路所需要的无线资源控制协议 (Radio Resource Control, 筒称: RRC ) 配置信息。 另外, 第二节点用于为 UE提供服务。 本实施例提供的建立回程链路方法, 通过 UE获取第一节点的系统信 息, 第一节点的系统信息包含第一节点的回程需求信息, 第一节点的回程 需求信息用于表示第一节点具有与第二节点建立回程链路的需求, 再由 UE 根据第一节点的回程需求信息以及第一节点的当前信号质量确定第一 节点作为 UE 的接入节点, UE 向第二节点发送请求信息, 请求信息包含 回程容量提升信息和第一节点的标识, 以使第二节点根据回程容量提升信 息和第一节点的标识确定回程建立指示信息, 最后 UE接收第二节点发送 的回程建立指示信息, 并根据回程建立指示信息完成第一节点通过所述 UE与第二节点的回程链路配置, 实现了通过具有中继能力的 UE, 为负载 过高的第一节点建立与第二节点新的回程链路, 从而使得第一节点可以利 用新的回程链路与第二节点进行数据传输, 在不影响用户的业务体验的前 提下, 降低了第一节点过高的负载。
进一歩的, 在上述歩骤 103之后, 还包括: UE向第二节点发送回程 建立完成信息, 以使第二节点根据回程建立完成信息建立第一节点通过 UE与第二节点的回程链路。
进一歩的, 对于实施例一中的第一节点的回程需求信息, 具体可以为 第一节点的回程需求指示或第一节点的回程需求等级。 并且, 实施例一中 的回程容量提升信息具体也为第一节点的回程需求指示或第一节点的回 程需求等级。 需要说明的是, 可以在第一节点的系统信息中添加一个 lbit 的标识作为第一节点的回程需求指示, 例如, 当该标识置" 0"时, 表示第 一节点不需要与第二件点建立新的回程链路; 当该标识置 "1"时, 则表示 该第一节点需要与第二节点建立新的回程链路。 或者, 第一节点将负载情 况按照负载的大小划分为若干等级, 等级越高代表负载越高。 第一节点将 测得的回程链路负载值与各等级的负载值范围相比较, 最终确定第一节点 的回程需求等级, 需要说明的是, 该第一节点的回程需求等级实际表示的 是: 第一节点与第二节点当前回程链路的回程需求等级, 可选的, 设置为 该回程需求等级越高, 说明该第一节点与第二节点的已有回程链路负载越 重, 此时越需要建立新的回程链路; 或者, 设置为该回程需求等级越低, 明该第一节点与第二节点的已有回程链路负载越重, 此时越需要建立新的 回程链路。 此处, 对于回程需求等级具体的排序设置不予限定。 优选的, 实施例一中第一节点的系统信息还包含第三节点的标识, 第 三节点用于为第一节点提供服务。 其中, 第三节点可以为演进型基站
( evolved Node B简称: eNB ) 。
则此时, 实施例一中的歩骤 101, 包括:
歩骤 101a、 若第一节点满足接入条件, 则 UE确定第一节点作为 UE 的接入节点。
其中, 接入条件包括:
第一节点的回程需求信息满足预设条件、 UE测得第一节点的当前信号质 量大于阈值, 且第二节点的标识与第三节点的标识相同。
其中, UE测得第一节点的当前信号质量大于阈值的一种可行的实现方式 为: UE可以预先设置一个预设阈值, 例如, 该预设阈值可以通过参考信号接 收功率(Reference Signal Received Power, 简称: RSRP)或参考信号接受质 量 (Reference Signal Received Quality , 简称: RSRQ) 表示, 当 UE检测到 第一节点的信号质量时, 例如, 将该第一节点的 RSRP与预设阈值进行比较, 若 RSRP大于该预设阈值, 则说明第一节点 1的信号质量能够满足将该第一 节点 1通过 UE与第二节点 2建立回程链路的信号质量需求。
需要说明的是, 第二节点的标识与第三节点的标识相同, 说明为 UE提 供服务的第二节点与为第一节点提供服务的第三节点为同一网络节点, 即第 三节点就是第二节点。 这样, 可以保证在建立回程链路时, 不会在多个第二 节点之间进行回程链路的建立, 避免了不必要的交互, 节约了网络的资源。
下面针对 UE与网络节点的不同连接场景, 通过具体的实施例对本发 明提供的建立回程链路方法进行说明:
实施例二
图 2为本发明实施例一提供的一种建立回程链路方法的第一种场景示 意图,参照图 2、 UE 3作为中继节点分别连接至第四节点 4及第二节点 2, 其中第四节点 4也为 LPN, 在该场景下, UE 3已经与第二节点 2及第四 节点 4建立双连接, 形成回程链路, 即 UE 3已经作为中继节点传输第二 节点 2与第四节点 4之间的数据。 如图 2中所示第一节点 1, 此时通过 其他网络节点与第二节点 2建立多跳回程链路, 或者, 直接与第二节点 2 建立回程链路。 但第一节点 1 与第二节点 2也存在回程链路, 并且, 第 一节点 1的回程负载水平过高。
针对实施例二这种场景, 上文所述歩骤 101a 中第一节点的回程需求 信息满足预设条件, 具体包括一下两种方式:
方式一: 第一节点的回程需求等级大于第一预设门限, 且第四节点的 回程需求等级小于第二预设门限;
需要说明的是, 此处第一节点的回程需求等级与第一预设门限, 以及 第四节点的回程需求等级与第二预设门限比较, 为一个绝对的比较, 即由 于回程需求等级体现了一个节点的负载程度, 因此方式一中的比较只要能 够体现第一节点的负载程度要高于第一预设门限, 以及第四节点的的负载 程度要低于第二预设门限即可。其中第一预设门限与第二预设门限无明确 的大小关系, 可根据统计或经验进行设计, 此处不予限定。
或者, 方式二: 第一节点的回程需求等级大于第四节点的回程需求等 级, 该方式二为一种相对比较, 由于第一节点的回程需求等级体现的是该 第一节点的负载程度, 因此根据方式二的比较方法, 其只关心两个节点之 间负载程度的相对比较。
进一歩的, 针对实施例二的场景, 在歩骤 103、 UE接收所述第二节点 发送的回程建立指示信息, 并根据回程建立指示信息完成第一节点与第二 节点的回程链路配置之前, 还包括:
歩骤 104、 UE接收第二节点发送的链路释放指示信息, 并根据链路释 放指示信息释放 UE与第四节点的连接。
需要说明的是, 第二节点收到 UE发送的请求消息后, 需要检测 UE 当前连接的第四节点与第二节点共有几条回程链路, 如果第四节点与第二 节点之间只有一条通过该 UE搭建的回程链路, 则第二节点不会指示 UE 建立与第一节点的回程链路。因为如果 UE要建立与第一节点的回程链路, UE 必须先断掉与第四节点的回程链路, 这样第四节点将失去与第二节点 的回程链路, 造成第四节点下的用户通信中断。 如果第四节点与第二节点 之间有多条回程链路, 则第二节点根据第一节点的标识、 第一节点的回程 需求等级及当前的资源使用情况进行判断, 如果满足建立条件, 则指示 UE 建立释放与第四节点的连接, 同时建立第二节点与第一节点的回程链 路。 实施例三
图 3为本发明实施例一提供的一种建立回程链路方法的第二种场景示 意图, 参照图 3、 UE 3仅与第二节点 2连接, 此时第一节点 1通过其他 回程链路与第二节点 2连接,具体的其他回程链路可以为通过其他 UE建 立的回程链路, 或者, 也可以为第一节点 1 与第二节点 2直接连接形成 的回程链路。
针对实施例三的场景, 上文所述歩骤 101a 中第一节点的回程需求信 息满足预设条件, 包括:
第一节点的系统信息中携带有第一节点的回程需求指示。
实施例四
图 4为本发明实施例一提供的一种建立回程链路方法的第三种场景示 意图, 参照图 4, 在该场景下, UE 3单侧连接至第二节点 2, 并且第一节 点 1、 第四节点 4与第二节点 2均有回程链路的连接, 其中第四节点 4 也为 LPN。 但是第一节点 1与第二节点 2回程链路的负载水平明显高于 第四节点 4与第二节点 2回程链路的负载水平。
针对实施例四的场景, 上文所述歩骤 101a中第一节点的回程需求信息满 足预设条件, 包括: 第一节点的回程需求等级大于 UE接收到的第四节点的 回程需求等级。
需要说明的是, 第四节点的回程需求等级, 也可以通过类似实施例一 种歩骤 100的方式实现。
或者, 第一节点的系统信息中携带有第一节点的回程需求指示。
实施例五
图 5为本发明实施例一提供的一种建立回程链路方法的第四种场景示 意图, 参照图 5, 在该场景下, UE 3单侧连接至第二节点 2, 第一节点 1 未与任何 eNB建立任何连接, 其处于孤立状态, 无法进行数据通信, 则该 类第一节点 1具有最高接入等级。
针对实施例五的场景, 上文所述歩骤 101a 中若第一节点满足接入条 件, 则 UE确定第一节点作为 UE的接入节点, 具体包括:
当 UE测得该第一节点处于孤立状态, 则将该类第一节点 1的接入等级 设置为最高接入等级, UE测得的第一节点的当前信号质量大于预设阈值。 其中, UE测得第一节点的当前信号质量大于阈值的一种可行的实现方式 为: UE可以预先设置一个预设阈值, 例如, 该预设阈值可以通过参考信号接 收功率(Reference Signal Received Power, 简称: RSRP)或参考信号接受质 量 (Reference Signal Received Quality , 简称: RSRQ) 表示, 当 UE检测到 第一节点的信号质量时, 例如, 将该第一节点的 RSRP与预设阈值进行比较, 若 RSRP大于该预设阈值, 则说明第一节点 1的信号质量能够满足将该第一 节点 1通过 UE与第二节点 2建立回程链路的信号质量需求。
第一节点的系统信息包含第一节点的回程需求等级或者第一节点的 的回程需求指示。
进一歩的,对于上述实施例一至实施例五, 在歩骤 100之前,还包括: 歩骤 105、 UE驻留在第二节点, 并建立与第二节点的 RRC连接。
歩骤 106、 UE接收第二节点的测量控制信息, 测量控制信息指示 UE 周期性读取第一节点的系统信息并测量第一节点的信号质量。
图 6为本发明实施例二提供的一种建立回程链路方法的流程示意图, 其执行主体为第一节点, 并且该第一节点可以为 LPN。 如图 6所示, 一种 建立回程链路方法包括如下歩骤:
歩骤 200、 第一节点测量第一节点的负载信息。
该负载信息可以通过给定时间段内, 第一节点在回程链路被分配到的 用于数据传输的物理资源块 (Physical Resource Block, 简称: PRB ) 总数 来表示;
该负载信息还可以通过给定时间段内,第一节点在回程链路上的 PRB 使用率表示;
该负载信息还可以通过给定时间段内, 第一节点覆盖范围内整个小区 的 PRB使用率表示。
歩骤 201、 第一节点根据第一节点的负载信息确定第一节点的系统信 息。
具体的, 第一节点的系统信息包含第一节点的回程需求信息。
歩骤 202、 第一节点将第一节点的系统信息进行广播, 以使 UE获取 第一节点的系统信息, 并根据第一节点的回程需求信息确定将第一节点作 为 UE的接入节点。 歩骤 203、 第一节点建立第一节点通过 UE与第二节点的回程链路。 具体的, 第一节点接收 UE发送的 RRC建立请求, 根据该 RRC建立 请求建立通过该 UE与第二节点的回程链路。
本实施例提供的建立回程链路方法, 通过第一节点测量第一节点的负 载信息, 再由第一节点根据第一节点的负载信息确定第一节点的系统信 息, 最后第一节点将包含第一节点的回程需求信息的系统信息进行广播, 以使 UE获取所述第一节点的系统信息, 并根据第一节点的回程需求信息 确定将第一节点作为 UE的接入节点, 最终由第一节点建立第一节点通过 UE与第二节点的回程链路。 实现了通过具有中继能力的 UE, 为负载过高 的第一节点建立与第二节点新的回程链路, 从而使得第一节点可以利用新 的回程链路与第二节点进行数据传输, 在不影响用户的业务体验的前提 下, 降低了第一节点过高的负载。
可选的, 对于实施例六的歩骤 201中, 第一节点的回程需求信息为第 一节点的回程需求指示或第一节点的回程需求等级。
具体的, 关于第一节点的回程需求指示以及第一节点的回程需求等级 在上文实施例一中已经进行了详细说明, 此处不再赘述。
针对上文实施例一、 实施例四中 UE侧的操作, 相应的, 在实施例一、 实施例四的场景中, 实施例六歩骤 202第一节点的另一种可能的实现方式 为:
歩骤 202a、第一节点根据第一节点的负载信息确定第一节点的回程需 求等级, 第一节点将第一节点的系统信息广播;
第一节点的系统信息包含第一节点的回程需求等级、 第三节点的标 识;
第三节点用于为第一节点提供服务。
需要说明的是, 由于上文实施例一以及实施例四中都涉及第一节点和 第四节点, 因此需要将第一节点的回程需求等级与第四节点的回程需求等 级进行比较, 当第一节点的回程需求等级满足相应预设条件后, 则 UE将 第一节点作为该 UE的接入节点,从而再通过 UE与第二节点的后续交互, 建立第一节点与第二节点的回程链路。
针对上文实施例三中 UE侧的操作, 相应的, 在实施例三的场景中, 实施例六歩骤 202第一节点的一种可能的实现方式为:
歩骤 202b、若第一节点的负载信息大于负载阈值, 则第一节点将第一 节点的系统信息广播。
具体的, 第一节点的系统信息包含第一节点的回程需求指示、 第三节 点的标识; 需要说明的是, 第三节点用于为第一节点提供服务。
针对上文实施例五中 UE侧的操作, 相应的, 在实施例五的场景中, 实施例六歩骤 202第一节点的另一种可能的实现方式为:
歩骤 202c、第一节点测量到第一节点未与第三节点连接, 第一节点将 第一节点的系统信息广播。
具体的, 第一节点的系统信息包含第一节点的回程需求等级或者第一 节点的的回程需求指示。
图 7为本发明实施例三提供的一种建立回程链路方法的流程示意图, 其执行主体为第二节点, 可以为 eNB。 如图 7所示, 一种建立回程链路方 法包括如下歩骤:
歩骤 300、 第二节点接收用户设备 UE发送的请求信息。
具体的, 请求信息包含回程容量提升信息和第一节点的标识, 其中, 回程容量提升信息可以为第一节点的回程需求指示或第一节点的回程需 求等级。
歩骤 301、 第二节点根据回程容量提升信息和第一节点的标识确定回 程建立指示信息。
歩骤 302、 第二节点向 UE发送回程建立指示信息。
具体的, 回程建立指示信息包含 UE建立与第一节点及第二节点回程 链路所需要的 RRC配置信息。
歩骤 303、 第二节点接收 UE发送的回程建立完成信息, 根据回程建 立完成信息建立第一节点通过 UE与第二节点的回程链路。
本实施例提供的建立回程链路方法, 通过第二节点接收用户设备 UE 发送的请求信息, 再由第二节点根据回程容量提升信息和第一节点的标识 确定回程建立指示信息, 最后第二节点向 UE发送回程建立指示信息, 以 使 UE根据回程建立指示信息完成第一节点与第二节点的回程链路配置, 最终第二节点接收 UE发送的回程建立完成信息, 根据回程建立完成信息 建立第一节点通过 UE与第二节点的回程链路。 实现了通过具有中继能力 的 UE, 为负载过高的第一节点建立与第二节点新的回程链路, 从而使得 第一节点可以利用新的回程链路与第二节点进行数据传输, 在不影响用户 的业务体验的前提下, 降低了第一节点过高的负载。
进一歩的, 对于实施例七中的回程容量提升信息, 该回程容量提升信息 可以为第一节点的回程需求指示或第一节点的回程需求等级。
进一歩的, 在图 7中歩骤 300之前, 还包括:
歩骤 303、 第二节点建立与 UE的 RRC连接。 歩骤 304、 第二节点向 UE发送测量控制信息, 以使 UE根据测量控 制信息周期性读取第一节点的系统信息并测量第一节点的信号质量。 图 8为本发明实施例四提供的一种建立回程链路方法的信令交互示意 图, 参照图 8, 对本发明上述各实施例中涉及的 UE、 第一节点以及第二节 点之间建立回程链路的过程进行整体说明, 下面如图 8所示, 一种建立回 程链路方法包括如下歩骤:
歩骤 400、 第二节点建立与 UE的 RRC连接。
歩骤 401、 第二节点向 UE发送测量控制信息, 以使 UE根据测量控 制信息周期性读取第一节点的系统信息并测量第一节点的信号质量。
歩骤 402、 第一节点测量第一节点的负载信息。
歩骤 403、 第一节点根据第一节点的负载信息确定第一节点的系统信 息。
针对上文实施例二的场景, 第一节点测量回程链路的负载情况, 并根 据负载测量值确定相应的回程需求等级。第一节点在系统信息中携带第一 节点的回程需求等级及当前为第一节点提供服务的第三节点的标识;
针对上文中的实施例三的场景, 第一节点测量回程链路的负载情况, 若负载大小超过预设门限值, 则第一节点在第一节点的系统信息中携带第 一节点的回程需求指示及当前为第一节点提供服务的第三节点的标识; 针对上文中实施例四的场景, 第一节点测量回程链路的负载情况, 并 根据负载测量值确定相应第一节点的回程需求等级。第一节点在第一节点 的系统信息中携带第一节点的回程需求等级及当前为第一节点提供服务 的第三节点的标识; 针对上文实施例五的场景, 第一节点检测到自身与任何 eNB 都无连 接, 则第一节点在系统信息中携带回程需求等级而不携带第三节点的标 识。
歩骤 404、 第一节点将第一节点的系统信息进行广播。
歩骤 405、 UE获取第一节点的系统信息, UE根据第一节点的回程需 求信息以及第一节点的当前信号质量确定第一节点作为 UE的接入节点。
具体的, 第一节点的系统信息包含第一节点的回程需求信息, 第一节 点的回程需求信息用于表示第一节点具有与第二节点建立回程链路的需 求。
其中, 针对上文实施例二的场景, UE周期性读取第一节点的系统信息, 若以下条件全部满足, 则将该第一节点作为目标接入节点: 第一节点的系统 信息中携带有第一节点的回程需求等级; 第一节点的的回程需求等级高于第 一预设门限, 且当前连接的第四节点的回程需求等级低于第二预设门限; 第 一节点的系统信息中携带的 eNB ID与当前为 UE服务的 eNB ID相同, SP,第二 节点的标识与第三节点的标识相同;第一节点的当前信号质量满足预设条件, 则确定该第一节点为接入节点。
针对上文中的实施例三的场景, UE周期性读取第一节点的系统信息, 若 以下条件全部满足, 则将该第一节点作为目标接入节点: 第一节点的系统信 息中携带有第一节点的回程需求指示; 第一节点的系统信息中携带的 eNB ID 与当前为 UE服务的 eNB ID相同,即,第二节点的标识与第三节点的标识相同; 第一节点的当前信号质量满足预设条件, 则确定该第一节点为接入节点。
针对上文中实施例四的场景, UE周期性读取各第一节点的系统信息, 若 以下条件全部满足, 则将该第一节点作为目标接入节点: 第一节点的系统信 息中携带有回程需求等级且回程需求等级高于其他节点 (例如实施例四中的 第四节点);第一节点的系统信息中携带的 eNB ID与当前为 UE服务的 eNB ID 相同, SP, 第二节点的标识与第三节点的标识相同; 第一节点的当前信号质 量满足预设条件, 则确定该第一节点为接入节点。
针对上文实施例五的场景, UE 周期性读取第一节点的系统信息, 若 发现第一节点的系统信息中含有第一节点的回程需求等级或者第一节点 的回程需求指示, 而不含有第三节点的标识, 则 UE确定该第一节点处于 无连接状态, 并将该第一节点接入优先级设定为最高。 若第一节点的信号 质量满足预设条件, 则确定该第一节点为接入节点。
歩骤 406、 UE向第二节点发送请求信息,请求信息包含回程容量提升 信息和第一节点的标识。
针对上文实施例二至实施例五的场景, UE 向第二节点上报携带有第 一节点的标识及回程容量提升信息的请求消息, 请求第二节点使用 UE建 立与第一节点的回程链路; 其中, 对于实施例二, 回程容量提升信息为第 一节点的回程需求等级; 对于实施例三, 回程容量提升信息为第一节点的 回程需求指示; 对于实施例四, 回程容量提升信息为第一节点的回程需求 等级; 对于实施例五, 回程容量提升信息为第一节点的回程需求等级或者 第一节点的回程需求指示。
歩骤 407、 第二节点根据回程容量提升信息和第一节点的标识确定回 程建立指示信息。
具体的, 针对上文实施例二的场景, 第二节点根据第一节点的标识、 第一节点的回程需求等级、 UE 当前连接的第四节点的标识及当前的资源 使用情况进行判断, 若满足连接建立条件, 则指示 UE释放与第四节点的 连接并建立与第一节点的回程链路。
针对上文中的实施例三的场景, 第二节点根据第一节点的标识、 第一 节点的回程需求指示及当前的资源使用情况进行判断, 若满足连接建立条 件, 则指示 UE建立与第二节点及第一节点的回程链路。
针对上文中实施例四的场景, 第二节点根据第一节点的标识、 第一节 点的回程需求等级及当前的资源使用情况进行判断, 若满足连接建立条 件, 则指示 UE建立与第二节点及第一节点的回程链路。
针对上文实施例五的场景, 第二节点根据第一节点的标识、 第一节点 的回程需求等级或者第一节点的回程需求指示及当前的资源使用情况进 行判断, 若满足连接建立条件, 则指示 UE建立与第二节点及第一节点的 回程链路。
歩骤 408、 第二节点向 UE发送链路释放指示信息, 以使 UE释放与 第四节点的连接。
需要说明的, 歩骤 408只是针对上文中实施例二的场景。 对于实施例 三、 实施例四以及实施例五的场景, 则不需要执行歩骤 408。
歩骤 409、 第二节点向 UE发送回程建立指示信息。
歩骤 410、 UE接收第二节点发送的回程建立指示信息, 并根据回程建 立指示信息完成第一节点与第二节点的回程链路配置。 需要说明的是, 上文各实施例中只涉及到一个第一节点, 当网络中有 多个第一节点时, 如果多个第一节点满足作为目标第一节点的判断条件, 则 UE将目标第一节点的列表及相应的回程需求等级发送给第二节点, 由 第二节点决定最终与哪个第一节点建立回程链路。
图 9为本发明实施例五提供的一种用户设备 UE的结构示意图, 该类 UE 具备双连接能力, 即可以同时连接两个网络节点。 其可以用来执行上 文图 1 中对应的方法, 如图 9所示, 该 UE包括: 获取模块 10、 确定模 块 11、 发送模块 12、 接收模块 13。
获取模块 10, 用于获取第一节点的系统信息。
具体的, 第一节点的系统信息包含第一节点的回程需求信息, 第一节 点的回程需求信息用于表示第一节点具有与第二节点建立回程链路的需 求。
确定模块 11,用于根据第一节点的回程需求信息以及第一节点的当前 信号质量确定第一节点作为 UE的接入节点。
发送模块 12, 用于向第二节点发送请求信息。
具体的, 请求信息包含回程容量提升信息和第一节点的标识, 以使第 二节点根据回程容量提升信息和第一节点的标识确定回程建立指示信息。
接收模块 13, 用于接收第二节点发送的回程建立指示信息, 并根据回 程建立指示信息完成第一节点通过 UE与第二节点的回程链路配置。
具体的, UE 根据回程建立指示信息完成第一节点与第二节点的回程 链路配置建立了以 UE为中继, 第一节点与第二节点之间的回程链路。
需要说明的是, 回程建立指示信息包含 UE建立与第一节点及第二节 点回程链路所需要的无线资源控制协议 (Radio Resource Control, 筒称: RRC ) 配置信息。 另外, 第二节点用于为 UE提供服务。
本实施例提供的建立回程链路方法, 通过获取模块获取第一节点的系 统信息, 第一节点的系统信息包含第一节点的回程需求信息, 第一节点的 回程需求信息用于表示第一节点具有与第二节点建立回程链路的需求, 再 由确定模块根据第一节点的回程需求信息以及第一节点的当前信号质量 确定第一节点作为 UE的接入节点, 发送模块向第二节点发送请求信息, 请求信息包含回程容量提升信息和第一节点的标识, 以使第二节点根据回 程容量提升信息和第一节点的标识确定回程建立指示信息, 最后接收模块 接收第二节点发送的回程建立指示信息, 并根据回程建立指示信息完成第 一节点通过 UE与第二节点的回程链路配置, 实现了通过具有中继能力的 UE, 为负载过高的第一节点建立与第二节点新的回程链路,从而使得第一 节点可以利用新的回程链路与第二节点进行数据传输, 在不影响用户的业 务体验的前提下, 降低了第一节点过高的负载。
进一歩的, 发送模块 12, 还用于在接收模块 13接收第二节点发送的 回程建立指示信息, 并根据回程建立指示信息完成第一节点与第二节点的 回程链路配置之后, 向第二节点发送回程建立完成信息, 以使第二节点根 据回程建立完成信息建立第一节点通过 UE与第二节点的回程链路。
进一歩的, 对于实施例九中的第一节点的回程需求信息, 具体可以为 第一节点的回程需求指示或第一节点的回程需求等级。 并且, 实施例一中 的回程容量提升信息具体也为第一节点的回程需求指示或第一节点的回程 需求等级。对于第一节点的回程需求指示或第一节点的回程需求等级具体 的实现方式已在上文中进行了说明, 此处不再赘述。
优选的, 实施例九中第一节点的系统信息还包含第三节点的标识, 第 三节点用于为第一节点提供服务。 其中, 第三节点可以为演进型基站 ( evolved Node B简称: eNB ) 。
进一歩的, 在图 9的基础上, 图 10为本发明实施例六提供的一种用 户设备 UE的结构示意图, 如图 10所示, 该 UE还包括: 检测模块 14。
检测模块 14, 用于检测第一节点的当前信号质量。
则确定模块 11, 具体用于若第一节点满足接入条件, 则 UE确定第一 节点作为 UE的接入节点。
其中, 接入条件包括:
第一节点的回程需求信息满足预设条件、 UE测得第一节点的当前信号质 量大于阈值, 且第二节点的标识与第三节点的标识相同。 其中, UE测得第一节点的当前信号质量大于阈值的一种可行的实现方式 在上文歩骤 101a已进行了详细说明此处不再赘述。
需要说明的是, 第二节点的标识与第三节点的标识相同, 说明为 UE提 供服务的第二节点与为第一节点提供服务的第三节点为同一网络节点, 即第 三节点就是第二节点。 这样, 可以保证在建立回程链路时, 不会在多个第二 节点之间进行回程链路的建立, 避免了不必要的交互, 节约了网络的资源。
下面针对 UE与网络节点的不同连接场景, 通过具体的实施例对本发 明提供的建立回程链路方法进行说明:
参照上文实施例二
参照图 2、 UE 3作为中继节点分别连接至第四节点 4及第二节点 2, 其中第四节点 4也为 LPN, 在该场景下, UE 3已经与第二节点 2及第四 节点 4建立双连接, 形成回程链路, 即 UE 3已经作为中继节点传输第二 节点 2与第四节点 4之间的数据。 如图 2中所示第一节点 1, 此时通过 其他网络节点与第二节点 2建立多跳回程链路, 或者, 直接与第二节点 2 建立回程链路。 但第一节点 1 与第二节点 2也存在回程链路, 并且, 第 一节点 1的回程负载水平过高。
针对实施例二这种场景, 则实施例九中的第一节点的回程需求信息满 足预设条件, 具体包括一下两种方式:
方式一: 第一节点的回程需求等级大于第一预设门限, 且第四节点的 回程需求等级小于第二预设门限;
并且实施例二已经对方式一进行了具体说明, 此处不再赘述。
或者, 方式二: 第一节点的回程需求等级大于第四节点的回程需求等 级。
并且实施例二已经对方式二进行了具体说明, 此处不再赘述。
进一歩的, 针对实施例二的场景, 在实施例九中的接收模块 13, 还用 于在接收所述第二节点发送的回程建立指示信息, 并根据所述回程建立指 示信息完成所述第一节点与所述第二节点的回程链路配置之前, 接收所述 第二节点发送的链路释放指示信息, 并根据所述链路释放指示信息释放所 述 UE与所述第四节点的连接。
需要说明的是, 第二节点收到 UE发送的请求消息后, 需要检测 UE 当前连接的第四节点与第二节点共有几条回程链路, 如果第四节点与第二 节点之间只有一条通过该 UE搭建的回程链路, 则第二节点不会指示 UE 建立与第一节点的回程链路。因为如果 UE要建立与第一节点的回程链路, UE 必须先断掉与第四节点的回程链路, 这样第四节点将失去与第二节点 的回程链路, 造成第四节点下的用户通信中断。 如果第四节点与第二节点 之间有多条回程链路, 则第二节点根据第一节点的标识、 第一节点的回程 需求等级及当前的资源使用情况进行判断, 如果满足建立条件, 则指示 UE 建立释放与第四节点的连接, 同时建立第二节点与第一节点的回程链 路。
针对上文实施例三
参照图 3、 UE 3仅与第二节点 2连接, 此时第一节点 1通过其他回 程链路与第二节点 2连接,具体的其他回程链路可以为通过其他 UE建立 的回程链路, 或者, 也可以为第一节点 1 与第二节点 2直接连接形成的 回程链路。
针对实施例三的场景, 则实施例九中的第一节点的回程需求信息满足 预设条件, 包括:
第一节点的系统信息中携带有第一节点的回程需求指示。
参照上文实施例四
参照图 4, 在该场景下, UE 3单侧连接至第二节点 2, 并且第一节点 1、第四节点 4与第二节点 2均有回程链路的连接,其中第四节点 4也为 LPN。 但是第一节点 1 与第二节点 2 回程链路的负载水平明显高于第四 节点 4与第二节点 2回程链路的负载水平。
针对实施例四的场景, 上文实施例九中第一节点的回程需求信息满足预 设条件, 包括: 第一节点的回程需求等级大于 UE接收到的第四节点的回程 需求等级。
需要说明的是, 第四节点的回程需求等级, 也可以通过类似实施例一 种歩骤 100的方式实现。
参照上文实施例五
参照图 5, 在该场景下, UE 3 单侧连接至第二节点 2, 第一节点 1 未与任何 eNB建立任何连接, 其处于孤立状态, 无法进行数据通信, 则该 类第一节点 1具有最高接入等级。
针对实施例五的场景, 上文实施例九中的若第一节点满足接入条件, 则 UE确定第一节点作为 UE的接入节点, 具体包括:
参照图 10, 首先检测模块 14检测所述第一节点的当前信号质量。
当该第一节点处于孤立状态, 则将该类第一节点的接入等级设置为最高 接入等级, 第一节点的当前信号质量大于预设阈值时, 则确定模块 11确定所 述第一节点作为 UE的接入节点。
其中, 对于第一节点的信号质量大于预设阈值的具体实现方式, 在上文 实施例五中已经进行了详细说明, 此处不再赘述。
第一节点的系统信息包含第一节点的回程需求等级或者第一节点的 的回程需求指示。
进一歩的, 连接模块, 用于在所述获取模块 10获取第一节点的系统信息 之前, 驻留在所述第二节点, 并建立与所述第二节点的 RRC连接。
接收模块 13, 还用于接收第二节点的测量控制信息, 测量控制信息指 示 UE周期性读取第一节点的系统信息并测量第一节点的信号质量。
图 1 1 为本发明实施例七提供的一种节点的结构示意图, 具体的该节 点可以为上文实施例六中的第一节点, 并且该节点可以为 LPN。 如图 1 1 所示, 该节点包括: 测量模块 20、 确定模块 21、 广播模块 22、 建立模块 23。
测量模块 20, 用于测量第一节点的负载信息。
其中, 负载信息已在上文中实施例六的歩骤 200中进行了详细说明, 此处不再赘述。
确定模块 21, 用于根据第一节点的负载信息确定第一节点的系统信 息。
具体的, 第一节点的系统信息包含第一节点的回程需求信息。
广播模块 22, 用于将第一节点的系统信息进行广播, 以使 UE获取第 一节点的系统信息, 并根据第一节点的回程需求信息确定将第一节点作为 UE的接入节点。
建立模块 23, 用于建立第一节点通过 UE与第二节点的回程链路。 具体的, 一种可行的实现方式为:第一节点的接收 UE发送的 RRC建 立请求, 建立模块 23根据该 RRC建立请求建立通过该 UE与第二节点的 回程链路。
本实施例提供的建立回程链路方法, 通过测量模块测量第一节点的负 载信息, 再由确定模块根据第一节点的负载信息确定第一节点的系统信 息, 最后广播模块将包含第一节点的回程需求信息的系统信息进行广播, 以使 UE获取所述第一节点的系统信息, 并根据第一节点的回程需求信息 确定将第一节点作为 UE的接入节点, 最终建立模块用于建立第一节点通 过 UE与第二节点的回程链路。 实现了通过具有中继能力的 UE, 为负载 过高的第一节点建立与第二节点新的回程链路, 从而使得第一节点可以利 用新的回程链路与第二节点进行数据传输, 在不影响用户的业务体验的前 提下, 降低了第一节点过高的负载。
可选的, 对于实施例十一中, 第一节点的回程需求信息为第一节点的 回程需求指示或第一节点的回程需求等级。
具体的, 关于第一节点的回程需求指示以及第一节点的回程需求等级 在上文实施例一中已经进行了详细说明, 此处不再赘述。
针对上文实施例一、 实施例四中 UE侧的操作, 相应的, 在实施例一、 实施例四的场景中, 实施例十一中的节点的确定模块 21, 用于根据第一节 点的负载信息确定第一节点的回程需求等级, 第一节点将第一节点的系统 信息广播;
第一节点的系统信息包含第一节点的回程需求等级、 第三节点的标 识;
第三节点用于为第一节点提供服务。
需要说明的是, 由于上文实施例一以及实施例四中都涉及第一节点和 第四节点, 因此需要将第一节点的回程需求等级与第四节点的回程需求等 级进行比较, 当第一节点的回程需求等级满足相应预设条件后, 则 UE将 第一节点作为该 UE的接入节点,从而再通过 UE与第二节点的后续交互, 建立第一节点与第二节点的回程链路。
针对上文实施例三中 UE侧的操作, 相应的, 在实施例三的场景中, 实施例十一中节点的广播模块 22,用于若第一节点的负载信息大于负载阈 值, 则第一节点将第一节点的系统信息广播。 具体的, 第一节点的系统信息包含第一节点的回程需求指示、 第三节 点的标识; 需要说明的是, 第三节点用于为第一节点提供服务。
针对上文实施例五中 UE侧的操作, 相应的, 在实施例五的场景中, 实施例十一中节点的广播模块 22, 用于测量到第一节点未与第三节点连 接, 第一节点将第一节点的系统信息广播。
具体的, 第一节点的系统信息包含第一节点的回程需求等级或者第一 节点的的回程需求指示。
图 12为本发明实施例八提供的一种节点的结构示意图, 该节点可以 为实施例其中第二节点, 并且, 该节点可以为 eNB。 如图 12所示, 该节 点包括: 接收模块 30、 确定模块 31、 发送模块 32。
接收模块 30, 用于接收用户设备 UE发送的请求信息。
具体的, 请求信息包含回程容量提升信息和第一节点的标识, 其中, 回程容量提升信息可以为第一节点的回程需求指示或第一节点的回程需 求等级。
确定模块 31,用于根据回程容量提升信息和第一节点的标识确定回程 建立指示信息。
发送模块 32, 用于向 UE发送回程建立指示信息。
具体的, 回程建立指示信息包含 UE建立与第一节点及第二节点回程 链路所需要的 RRC配置信息。
接收模块 30, 还用于接收 UE发送的回程建立完成信息, 根据回程建 立完成信息建立所述第一节点通过所述 UE与所述第二节点的回程链路。
本实施例提供的建立回程链路方法, 通过接收模块接收用户设备 UE 发送的请求信息, 再由确定模块根据回程容量提升信息和第一节点的标识 确定回程建立指示信息, 最后发送模块向 UE发送回程建立指示信息, 以 使 UE根据回程建立指示信息完成第一节点与第二节点的回程链路配置, 最终接收模块接收 UE发送的回程建立完成信息, 根据回程建立完成信息 建立所述第一节点通过所述 UE与所述第二节点的回程链路。 实现了通过 具有中继能力的 UE, 为负载过高的第一节点建立与第二节点新的回程链 路, 从而使得第一节点可以利用新的回程链路与第二节点进行数据传输, 在不影响用户的业务体验的前提下, 降低了第一节点过高的负载。 进一歩的, 对于实施例十二中的回程容量提升信息, 该回程容量提升信 息可以为第一节点的回程需求指示或第一节点的回程需求等级。
进一歩的, 在图 12的基础上, 图 13为本发明实施例九提供的一种节 点的结构示意图, 如图 13所示, 该节点, 还包括: 建立模块 33。
建立模块 33, 用于在接收模块 30接收 UE发送的请求信息之前, 建 立与 UE的 RRC连接。
则发送模块 32, 还用于向 UE发送测量控制信息, 以使 UE根据测量 控制信息周期性读取第一节点的系统信息并测量所述第一节点的信号质 参照图 2至图 5, 实施例十保护一种建立回程链路系统, 其包括: 图
9、 图 10所示结构的用户设备 UE, 该 UE能够执行相应图 1 的方案, 实 现类似实施例 1至实施例 5的技术效果。 图 11所示结构的节点, 该节点 能够执行相应图 6的方案, 实现类似实施例二的技术效果。 图 12、 图 13 所示结构的节点, 该节点能够执行相应图 7的方案, 实现类似实施例三的 技术效果。
图 14为本发明实施例十一提供的一种用户设备 UE的结构示意图,该 类 UE具备双连接能力, 即可以同时连接两个网络节点。 其可以用来执行 上文图 1 中对应的方法, 如图 14所示, 该 UE包括: 接收器 40、 处理器 41、 发射器 42。
处理器 41, 用于获取第一节点的系统信息。
具体的, 第一节点的系统信息包含第一节点的回程需求信息, 第一节 点的回程需求信息用于表示第一节点具有与第二节点建立回程链路的需 求。
处理器 41,还用于根据第一节点的回程需求信息以及第一节点的当前 信号质量确定第一节点作为 UE的接入节点。
发射器 42, 用于向第二节点发送请求信息。
具体的, 请求信息包含回程容量提升信息和第一节点的标识, 以使第 二节点根据回程容量提升信息和第一节点的标识确定回程建立指示信息。
接收器 40, 用于接收第二节点发送的回程建立指示信息, 并根据回程 建立指示信息完成第一节点通过 UE与第二节点的回程链路配置。 具体的, UE 根据回程建立指示信息完成第一节点与第二节点的回程 链路配置建立了以 UE为中继, 第一节点与第二节点之间的回程链路。
需要说明的是, 回程建立指示信息包含 UE建立与第一节点及第二节 点回程链路所需要的无线资源控制协议 (Radio Resource Control, 筒称- RRC ) 配置信息。 另外, 第二节点用于为 UE提供服务。
本实施例提供的建立回程链路方法, 通过处理器获取第一节点的系统 信息, 第一节点的系统信息包含第一节点的回程需求信息, 第一节点的回 程需求信息用于表示第一节点具有与第二节点建立回程链路的需求, 再由 处理器根据第一节点的回程需求信息以及第一节点的当前信号质量确定 第一节点作为 UE的接入节点, 发射器向第二节点发送请求信息, 请求信 息包含回程容量提升信息和第一节点的标识, 以使第二节点根据回程容量 提升信息和第一节点的标识确定回程建立指示信息, 最后接收器接收第二 节点发送的回程建立指示信息, 并根据回程建立指示信息完成第一节点通 过 UE与第二节点的回程链路配置, 实现了通过具有中继能力的 UE, 为 负载过高的第一节点建立与第二节点新的回程链路, 从而使得第一节点可 以利用新的回程链路与第二节点进行数据传输, 在不影响用户的业务体验 的前提下, 降低了第一节点过高的负载。
进一歩的, 发射器 42, 还用于在接收器 40接收第二节点发送的回程 建立指示信息, 并根据回程建立指示信息完成第一节点与第二节点的回程 链路配置之后, 向第二节点发送回程建立完成信息, 以使第二节点根据回 程建立完成信息建立第一节点通过 UE与第二节点的回程链路。
进一歩的, 对于第一节点的回程需求信息, 具体可以为第一节点的回 程需求指示或第一节点的回程需求等级。 并且, 实施例一中的回程容量提 升信息具体也为第一节点的回程需求指示或第一节点的回程需求等级。 对 于第一节点的回程需求指示或第一节点的回程需求等级具体的实现方式 已在上文中进行了说明, 此处不再赘述。
优选的, 第一节点的系统信息还包含第三节点的标识, 第三节点用于 为第一节点提供服务。其中,第三节点可以为演进型基站(evolved Node B 简称: eNB ) 。
进一歩的, 处理器 41, 还用于检测第一节点的当前信号质量。 则处理器 41, 具体用于若第一节点满足接入条件, 则确定第一节点作 为 UE的接入节点。
其中, 接入条件包括:
第一节点的回程需求信息满足预设条件、 UE测得第一节点的当前信号质 量大于阈值, 且第二节点的标识与第三节点的标识相同。
其中,处理器 41测得第一节点的当前信号质量大于阈值的一种可行的实 现方式在上文歩骤 101a已进行了详细说明此处不再赘述。
需要说明的是, 第二节点的标识与第三节点的标识相同, 说明为 UE提 供服务的第二节点与为第一节点提供服务的第三节点为同一网络节点, 即第 三节点就是第二节点。 这样, 可以保证在建立回程链路时, 不会在多个第二 节点之间进行回程链路的建立, 避免了不必要的交互, 节约了网络的资源。
下面针对 UE与网络节点的不同连接场景, 通过具体的实施例对本发 明提供的建立回程链路方法进行说明:
参照上文实施例二
参照图 2、 UE 3作为中继节点分别连接至第四节点 4及第二节点 2, 其中第四节点 4也为 LPN, 在该场景下, UE 3已经与第二节点 2及第四 节点 4建立双连接, 形成回程链路, 即 UE 3已经作为中继节点传输第二 节点 2与第四节点 4之间的数据。 如图 2中所示第一节点 1, 此时通过 其他网络节点与第二节点 2建立多跳回程链路, 或者, 直接与第二节点 2 建立回程链路。 但第一节点 1 与第二节点 2也存在回程链路, 并且, 第 一节点 1的回程负载水平过高。
针对实施例二这种场景, 则第一节点的回程需求信息满足预设条件, 具体包括一下两种方式:
方式一: 第一节点的回程需求等级大于第一预设门限, 且第四节点的 回程需求等级小于第二预设门限;
并且实施例二已经对方式一进行了具体说明, 此处不再赘述。
或者, 方式二: 第一节点的回程需求等级大于第四节点的回程需求等 级。
并且实施例二已经对方式二进行了具体说明, 此处不再赘述。
进一歩的, 针对实施例二的场景, 接收器 40, 还用于在接收第二节点 发送的回程建立指示信息, 并根据回程建立指示信息完成第一节点与第二 节点的回程链路配置之前, 接收第二节点发送的链路释放指示信息, 并根 据链路释放指示信息释放 UE与第四节点的连接。
需要说明的是, 第二节点收到 UE发送的请求消息后, 需要检测 UE 当前连接的第四节点与第二节点共有几条回程链路, 如果第四节点与第二 节点之间只有一条通过该 UE搭建的回程链路, 则第二节点不会指示 UE 建立与第一节点的回程链路。因为如果 UE要建立与第一节点的回程链路, UE 必须先断掉与第四节点的回程链路, 这样第四节点将失去与第二节点 的回程链路, 造成第四节点下的用户通信中断。 如果第四节点与第二节点 之间有多条回程链路, 则第二节点根据第一节点的标识、 第一节点的回程 需求等级及当前的资源使用情况进行判断, 如果满足建立条件, 则指示
UE 建立释放与第四节点的连接, 同时建立第二节点与第一节点的回程链 路。
针对上文实施例三
参照图 3、 UE 3仅与第二节点 2连接, 此时第一节点 1通过其他回 程链路与第二节点 2连接,具体的其他回程链路可以为通过其他 UE建立 的回程链路, 或者, 也可以为第一节点 1 与第二节点 2直接连接形成的 回程链路。
针对实施例三的场景, 则第一节点的回程需求信息满足预设条件, 包 括:
第一节点的系统信息中携带有第一节点的回程需求指示。
参照上文实施例四
参照图 4, 在该场景下, UE 3单侧连接至第二节点 2, 并且第一节点 1、第四节点 4与第二节点 2均有回程链路的连接,其中第四节点 4也为 LPN。 但是第一节点 1 与第二节点 2 回程链路的负载水平明显高于第四 节点 4与第二节点 2回程链路的负载水平。
针对实施例四的场景, 上文第一节点的回程需求信息满足预设条件, 包 括: 第一节点的回程需求等级大于 UE接收到的第四节点的回程需求等级。
需要说明的是, 第四节点的回程需求等级, 也可以通过类似实施例一 种歩骤 100的方式实现。 参照上文实施例五
参照图 5, 在该场景下, UE 3 单侧连接至第二节点 2, 第一节点 1 未与任何 eNB建立任何连接, 其处于孤立状态, 无法进行数据通信, 则该 类第一节点 1具有最高接入等级。
针对实施例五的场景, 上文若第一节点满足接入条件, 则 UE确定第 一节点作为 UE的接入节点, 具体包括:
首先处理器 41检测第一节点的当前信号质量。
当该第一节点处于孤立状态, 则将该类第一节点的接入等级设置为最高 接入等级, 第一节点的当前信号质量大于预设阈值时, 则处理器 41确定所述 第一节点作为 UE的接入节点。
其中, 对于第一节点的信号质量大于预设阈值的具体实现方式, 在上文 实施例五中已经进行了详细说明, 此处不再赘述。
第一节点的系统信息包含第一节点的回程需求等级或者第一节点的 的回程需求指示。
进一歩的, 处理器 41, 还用于在所述处理器 41获取第一节点的系统信 息之前, 驻留在所述第二节点, 并建立与所述第二节点的 RRC连接。
接收器 40, 还用于接收第二节点的测量控制信息, 测量控制信息指示 UE周期性读取第一节点的系统信息并测量第一节点的信号质量。
图 15 为本发明实施例十二提供的一种节点的结构示意图, 具体的该 节点可以为上文实施例六中的第一节点, 并且该节点可以为 LPN。 如图 15所示, 该节点包括: 处理器 50、 发射器 51。
处理器 50, 用于测量第一节点的负载信息。
其中, 负载信息已在上文中实施例六的歩骤 200中进行了详细说明, 此处不再赘述。
处理器 50, 还用于根据第一节点的负载信息确定第一节点的系统信 息。
具体的, 第一节点的系统信息包含第一节点的回程需求信息。
发射器 51, 用于将第一节点的系统信息进行广播, 以使 UE获取第一 节点的系统信息, 并根据第一节点的回程需求信息确定将第一节点作为 UE的接入节点。 具体的, 一种可行的实现方式为:第一节点的接收 UE发送的 RRC建 立请求, 处理器 50根据该 RRC建立请求建立通过该 UE与第二节点的回 程链路。
处理器 50, 还用于建立第一节点通过 UE与第二节点的回程链路。 本实施例提供的建立回程链路方法, 通过处理器测量第一节点的负载 信息, 再由处理器根据第一节点的负载信息确定第一节点的系统信息, 最 后发射器将包含第一节点的回程需求信息的系统信息进行广播, 以使 UE 获取所述第一节点的系统信息, 并根据第一节点的回程需求信息确定将第 一节点作为 UE的接入节点, 最终处理器还用于建立第一节点通过 UE与 第二节点的回程链路。 实现了通过具有中继能力的 UE, 为负载过高的第 一节点建立与第二节点新的回程链路, 从而使得第一节点可以利用新的回 程链路与第二节点进行数据传输, 在不影响用户的业务体验的前提下, 降 低了第一节点过高的负载。
可选的, 第一节点的回程需求信息为第一节点的回程需求指示或第一 节点的回程需求等级。
具体的, 关于第一节点的回程需求指示以及第一节点的回程需求等级 在上文实施例一中已经进行了详细说明, 此处不再赘述。
针对上文实施例一、 实施例四中 UE侧的操作, 相应的, 在实施例一、 实施例四的场景中, 节点的处理器 50, 用于根据第一节点的负载信息确定 第一节点的回程需求等级, 发射器 51将第一节点的系统信息广播;
第一节点的系统信息包含第一节点的回程需求等级、 第三节点的标 识;
第三节点用于为第一节点提供服务。
需要说明的是, 由于上文实施例一以及实施例四中都涉及第一节点和 第四节点, 因此需要将第一节点的回程需求等级与第四节点的回程需求等 级进行比较, 当第一节点的回程需求等级满足相应预设条件后, 则 UE将 第一节点作为该 UE的接入节点,从而再通过 UE与第二节点的后续交互, 建立第一节点与第二节点的回程链路。
针对上文实施例三中 UE侧的操作, 相应的, 节点的发射器 51, 用于 若第一节点的负载信息大于负载阈值, 则发射器 51 将第一节点的系统信 息广播。
具体的, 第一节点的系统信息包含第一节点的回程需求指示、 第三节 点的标识; 需要说明的是, 第三节点用于为第一节点提供服务。
针对上文实施例五中 UE侧的操作, 相应的, 节点的发射器 51, 用于 测量到第一节点未与第三节点连接, 发射器 51 将第一节点的系统信息广 播。
具体的, 第一节点的系统信息包含第一节点的回程需求等级或者第一 节点的的回程需求指示。
图 16为本发明实施例十三提供的一种节点的结构示意图, 该节点可 以为实施例其中第二节点, 并且, 该节点可以为 eNB。 如图 16所示, 该 节点包括: 接收器 60、 处理器 61、 发射器 62。
接收器 60, 用于接收用户设备 UE发送的请求信息。
具体的, 请求信息包含回程容量提升信息和第一节点的标识, 其中, 回程容量提升信息可以为第一节点的回程需求指示或第一节点的回程需 求等级。
处理器 61,用于根据回程容量提升信息和第一节点的标识确定回程建 立指示信息。
发射器 62, 用于向 UE发送回程建立指示信息。
具体的, 回程建立指示信息包含 UE建立与第一节点及第二节点回程 链路所需要的 RRC配置信息。
接收器 60, 还用于接收 UE发送的回程建立完成信息, 根据回程建立 完成信息建立所述第一节点通过所述 UE与所述第二节点的回程链路。
本实施例提供的建立回程链路方法, 通过接收器接收用户设备 UE发 送的请求信息, 再由处理器根据回程容量提升信息和第一节点的标识确定 回程建立指示信息, 最后发射器向 UE发送回程建立指示信息, 以使 UE 根据回程建立指示信息完成第一节点与第二节点的回程链路配置, 接收器 接收 UE发送的回程建立完成信息, 根据回程建立完成信息建立所述第一 节点通过所述 UE与所述第二节点的回程链路。 实现了通过具有中继能力 的 UE, 为负载过高的第一节点建立与第二节点新的回程链路, 从而使得 第一节点可以利用新的回程链路与第二节点进行数据传输, 在不影响用户 的业务体验的前提下, 降低了第一节点过高的负载。
进一歩的,回程容量提升信息可以为第一节点的回程需求指示或第一节 点的回程需求等级。
处理器 61, 还用于在接收器 60接收 UE发送的请求信息之前, 建立 与 UE的 RRC连接。
则发射器 62, 还用于向 UE发送测量控制信息, 以使 UE根据测量控 制信息周期性读取第一节点的系统信息并测量所述第一节点的信号质量。
本领域普通技术人员可以理解: 实现上述方法实施例的全部或部分歩骤 可以通过程序指令相关的硬件来完成, 前述的程序可以存储于一计算机可读 取存储介质中, 该程序在执行时, 执行包括上述方法实施例的歩骤; 而前述 的存储介质包括: ROM、 RAM,磁碟或者光盘等各种可以存储程序代码的介 质。
最后应说明的是: 以上各实施例仅用以说明本发明的技术方案, 而非对 其限制; 尽管参照前述各实施例对本发明进行了详细的说明, 本领域的普通 技术人员应当理解:其依然可以对前述各实施例所记载的技术方案进行修改, 或者对其中部分或者全部技术特征进行等同替换; 而这些修改或者替换, 并 不使相应技术方案的本质脱离本发明各实施例技术方案的范围。

Claims

权 利 要 求 书
1、 一种建立回程链路方法, 其特征在于, 包括:
用户设备 UE获取第一节点的系统信息, 所述第一节点的系统信息包 含第一节点的回程需求信息, 所述第一节点的回程需求信息用于表示所述 第一节点具有与第二节点建立回程链路的需求;
所述 UE根据所述第一节点的回程需求信息以及所述第一节点的当前 信号质量确定所述第一节点作为所述 UE的接入节点;
所述 UE向第二节点发送请求信息, 所述请求信息包含回程容量提升 信息和第一节点的标识, 以使所述第二节点根据所述回程容量提升信息和 所述第一节点的标识确定回程建立指示信息;
所述 UE接收所述第二节点发送的所述回程建立指示信息, 并根据所 述回程建立指示信息完成所述第一节点通过所述 UE与所述第二节点的回 程链路配置;
其中, 所述第二节点用于为所述 UE提供服务。
2、 根据权利要求 1所述的方法, 其特征在于, 在所述 UE接收所述第 二节点发送的所述回程建立指示信息, 并根据所述回程建立指示信息完成 所述第一节点通过所述 UE与所述第二节点的回程链路配置之后,还包括: 所述 UE向所述第二节点发送回程建立完成信息, 以使所述第二节点 根据所述回程建立完成信息建立所述第一节点通过所述 UE与所述第二节 点的回程链路。
3、 根据权利要求 1或 2所述的方法, 其特征在于, 所述第一节点的 回程需求信息为所述第一节点的回程需求指示或所述第一节点的回程需 求等级;
所述回程容量提升信息为所述第一节点的回程需求指示或所述第一节 点的回程需求等级。
4、 根据权利要求 1-3任意一项所述的方法, 其特征在于, 所述回程建 立指示信息包含所述 UE建立与所述第一节点及所述第二节点回程链路所 需要的无线资源控制协议 RRC配置信息。
5、 根据权利要求 1-4任意一项所述的方法, 其特征在于, 所述第一节 点的系统信息还包含第三节点的标识, 所述第三节点用于为所述第一节点 提供服务;
所述根据所述第一节点的回程需求信息以及第一节点的信号质量确 定所述第一节点作为所述 UE的接入节点, 包括:
若所述第一节点满足接入条件, 则所述 UE确定所述第一节点作为所 述 UE的接入节点;
其中, 所述接入条件包括:
所述第一节点的所述回程需求信息满足预设条件、 所述 UE测得所述第 一节点的当前信号质量大于阈值和所述第二节点的标识与所述第三节点的标 识相同。
6、 根据权利要求 5所述的方法, 其特征在于, 若所述 UE作为中继节 点分别连接至第四节点及所述第二节点, 则所述所述第一节点的所述回程 需求信息满足预设条件, 包括:
所述第一节点的所述回程需求等级大于第一预设门限, 且所述第四节 点的所述回程需求等级小于第二预设门限; 或者,
所述第一节点的所述回程需求等级大于所述第四节点的所述回程需 求等级。
7、 根据权利要求 6所述的方法, 其特征在于, 在所述 UE接收所述第 二节点发送的回程建立指示信息, 并根据所述回程建立指示信息完成所述 第一节点与所述第二节点的回程链路配置之前, 还包括:
所述 UE接收所述第二节点发送的链路释放指示信息, 并根据所述链 路释放指示信息释放所述 UE与所述第四节点的连接。
8、 根据权利要求 5所述的方法, 其特征在于, 若所述 UE单侧连接所 述第二节点, 则所述第一节点的所述回程需求信息满足预设条件, 包括: 所述第一节点的所述回程需求等级大于所述 UE接收到的第四节点的所 述回程需求等级; 或者,
所述第一节点的系统信息中携带有所述第一节点的回程需求指示。
9、 根据权利要求 1-4任意一项所述的方法, 其特征在于, 所述根据所 述第一节点的系统信息以及第一节点的信号质量确定所述第一节点作为 所述 UE的接入节点, 包括:
所述 UE测得的所述第一节点的当前信号质量大于预设阈值; 所述第一节点的系统信息包含所述第一节点的回程需求等级或者所 述第一节点的的回程需求指示。
10、 根据权利要求 1-9任意一项所述的方法, 其特征在于, 在所述用 户设备 UE获取第一节点的系统信息之前, 还包括:
所述 UE驻留在所述第二节点, 并建立与所述第二节点的 RRC连接; 所述 UE接收所述第二节点的测量控制信息, 所述测量控制信息指示 所述 UE周期性读取所述第一节点的系统信息并测量所述第一节点的信号 质量。
11、 一种建立回程链路方法, 其特征在于, 包括:
第一节点测量所述第一节点的负载信息;
所述第一节点根据所述第一节点的负载信息确定所述第一节点的系 统信息, 所述第一节点的系统信息包含所述第一节点的回程需求信息; 所述第一节点将所述第一节点的系统信息进行广播, 以使所述 UE获 取所述第一节点的系统信息, 并根据所述第一节点的回程需求信息确定将 所述第一节点作为所述 UE的接入节点;
所述第一节点建立所述第一节点通过所述 UE与所述第二节点的回程 链路。
12、 根据权利要求 11 所述的方法, 其特征在于, 所述第一节点的回 程需求信息为所述第一节点的回程需求指示或所述第一节点的回程需求 等级。
13、 根据权利要求 11或 12的方法, 其特征在于, 所述所述第一节点 将所述第一节点的系统信息进行广播, 包括:
若所述第一节点的负载信息大于负载阈值, 则所述第一节点将所述第 一节点的系统信息广播;
所述第一节点的系统信息包含所述第一节点的回程需求指示、第三节 点的标识;
所述第三节点用于为所述第一节点提供服务。
14、 根据权利要求 11或 12的方法, 其特征在于, 所述所述第一节点 将所述第一节点的系统信息进行广播, 包括:
所述第一节点根据所述第一节点的负载信息确定所述第一节点的回 程需求等级, 所述第一节点将所述第一节点的系统信息广播; 所述第一节点的系统信息包含所述第一节点的回程需求等级、第三节 点的标识;
所述第三节点用于为所述第一节点提供服务。
15、 根据权利要求 11或 12的方法, 其特征在于, 所述所述第一节点 将所述第一节点的系统信息进行广播, 包括:
所述第一节点测量到所述第一节点未与第三节点连接, 所述第一节点 将所述第一节点的系统信息广播;
所述第一节点的系统信息包含所述第一节点的回程需求等级或者所 述第一节点的回程需求指示。
16、 一种建立回程链路方法, 其特征在于, 包括:
第二节点接收用户设备 UE发送的请求信息, 所述请求信息包含回程 容量提升信息和第一节点的标识;
所述第二节点根据所述回程容量提升信息和所述第一节点的标识确 定回程建立指示信息;
所述第二节点向所述 UE发送所述回程建立指示信息, 所述回程建立 指示信息包含所述 UE建立与所述第一节点及所述第二节点回程链路所需 要的无线资源控制协议 RRC配置信息;
所述第二节点接收所述 UE发送的回程建立完成信息, 根据所述回程 建立完成信息建立所述第一节点通过所述 UE 与所述第二节点的回程链 路。
17、 根据权利要求 16所述的方法, 其特征在于, 所述回程容量提升信 息为所述第一节点的回程需求指示或所述第一节点的回程需求等级。
18、 根据权利要求 16或 17所述的方法, 其特征在于, 在所述第二节 点接收用户设备 UE发送的请求信息之前, 还包括:
所述第二节点建立与所述 UE的 RRC连接;
所述第二节点向所述 UE发送测量控制信息, 以使所述 UE根据所述 测量控制信息周期性读取所述第一节点的系统信息并测量所述第一节点 的信号质量。
19、 一种用户设备 UE, 其特征在于, 包括: 获取模块, 用于获取第一节点的系统信息, 所述第一节点的系统信息 包含第一节点的回程需求信息, 所述第一节点的回程需求信息用于表示所 述第一节点具有与第二节点建立回程链路的需求;
确定模块, 用于根据所述第一节点的回程需求信息以及所述第一节点 的当前信号质量确定所述第一节点作为 UE的接入节点;
发送模块, 用于向第二节点发送请求信息, 所述请求信息包含所述回 程容量提升信息和第一节点的标识, 以使所述第二节点根据所述回程容量 提升信息和所述第一节点的标识确定回程建立指示信息;
接收模块, 用于接收所述第二节点发送的所述回程建立指示信息, 并 根据所述回程建立指示信息完成所述第一节点通过所述 UE与所述第二节 点的回程链路配置;
其中, 所述第二节点用于为所述 UE提供服务。
20、 根据权利要求 19所述的 UE, 其特征在于, 所述发送模块, 还用 于在所述接收模块接收所述第二节点发送的所述回程建立指示信息, 并根 据所述回程建立指示信息完成所述第一节点与所述第二节点的回程链路 配置之后, 向所述第二节点发送回程建立完成信息, 以使所述第二节点根 据所述回程建立完成信息建立所述第一节点通过所述 UE与所述第二节点 的回程链路。
21、 根据权利要求 19或 20所述的 UE, 其特征在于, 所述第一节点 的回程需求信息为所述第一节点的回程需求指示或所述第一节点的回程 需求等级;
所述回程容量提升信息为所述第一节点的回程需求指示或所述第一节 点的回程需求等级。
22、 根据权利要求 19-21 任意一项所述的 UE, 其特征在于, 所述回 程建立指示信息包含所述 UE建立与所述第一节点及所述第二节点回程链 路所需要的无线资源控制协议 RRC配置信息。
23、 根据权利要求 19-22任意一项所述的 UE, 其特征在于, 还包括: 检测模块, 用于检测所述第一节点的当前信号质量;
所述第一节点的系统信息还包含第三节点的标识, 所述第三节点用于 为所述第一节点提供服务; 所述确定模块, 具体用于若所述第一节点满足接入条件, 则确定所述 第一节点作为所述 UE的接入节点;
其中, 所述接入条件包括:
所述第一节点的所述回程需求信息满足预设条件、 所述第一节点的当前 信号质量大于阈值和所述第二节点的标识与所述第三节点的标识相同。
24、 根据权利要求 23所述的 UE, 其特征在于, 若所述 UE作为中继 节点分别连接至第四节点及所述第二节点, 则所述第一节点的所述回程需 求信息满足预设条件, 包括:
所述第一节点的所述回程需求等级大于第一预设门限, 且所述第四节 点的所述回程需求等级小于第二预设门限; 或者,
所述第一节点的所述回程需求等级大于所述第四节点的所述回程需 求等级。
25、 根据权利要求 24所述的 UE, 其特征在于,
所述接收模块, 还用于在接收所述第二节点发送的回程建立指示信 息, 并根据所述回程建立指示信息完成所述第一节点与所述第二节点的回 程链路配置之前, 接收所述第二节点发送的链路释放指示信息, 并根据所 述链路释放指示信息释放所述 UE与所述第四节点的连接。
26、 根据权利要求 23所述的 UE, 其特征在于, 若所述 UE单侧连接 所述第二节点,则所述第一节点的所述回程需求信息满足预设条件,包括: 所述第一节点的所述回程需求等级大于所述 UE接收到的第四节点的所 述回程需求等级; 或者,
所述第一节点的系统信息中携带有所述第一节点的回程需求指示。
27、根据权利要求 19〜22任意一项所述的 UE,其特征在于,还包括: 检测模块, 用于检测所述第一节点的当前信号质量;
所述确定模块,具体用于当所述第一节点的当前信号质量大于预设阈值, 则确定所述第一节点作为所述 UE的接入节点;
所述第一节点的系统信息包含所述第一节点的回程需求等级或者所 述第一节点的回程需求指示。
28、根据权利要求 19〜27任意一项所述的 UE,其特征在于,还包括: 连接模块, 用于在所述获取模块获取第一节点的系统信息之前, 驻留 在所述第二节点, 并建立与所述第二节点的 RRC连接;
所述接收模块, 还用于接收所述第二节点的测量控制信息, 所述测量 控制信息指示所述 UE周期性读取所述第一节点的系统信息并测量所述第 一节点的信号质量。
29、 一种节点, 其特征在于, 包括:
测量模块, 用于测量所述第一节点的负载信息;
确定模块, 用于根据所述第一节点的负载信息确定所述第一节点的系 统信息, 所述第一节点的系统信息包含所述第一节点的回程需求信息; 广播模块, 用于将所述第一节点的系统信息进行广播, 以使所述 UE 获取所述第一节点的系统信息, 并根据所述第一节点的回程需求信息确定 将所述第一节点作为所述 UE的接入节点;
建立模块, 用于建立所述第一节点通过所述 UE与所述第二节点的回 程链路。
30、 根据权利要求 29所述的节点, 其特征在于, 所述第一节点的回 程需求信息为所述第一节点的回程需求指示或所述第一节点的回程需求 等级。
31、 根据权利要求 29或 30所述的节点, 其特征在于,
所述广播模块, 具体用于若所述第一节点的负载信息大于负载阈值, 则所述第一节点将所述第一节点的系统信息广播;
所述第一节点的系统信息包含所述第一节点的回程需求指示、第三节 点的标识;
所述第三节点用于为所述第一节点提供服务。
32、 根据权利要求 29或 30所述的节点, 其特征在于,
所述广播模块, 具体用于根据所述第一节点的负载信息确定所述第一 节点的回程需求等级, 将所述第一节点的系统信息广播;
所述第一节点的系统信息包含所述第一节点的回程需求等级、第三节 点的标识;
所述第三节点用于为所述第一节点提供服务。
33、 根据权利要求 29或 30所述的节点, 其特征在于,
所述广播模块, 具体用于测量到所述第一节点未与第三节点连接, 所 述第一节点将所述第一节点的系统信息广播;
所述第一节点的系统信息包含所述第一节点的回程需求等级或者所 述第一节点的的回程需求指示。
34、 一种节点, 其特征在于, 包括:
接收模块, 用于接收用户设备 UE发送的请求信息, 所述请求信息包 含回程容量提升信息和第一节点的标识;
确定模块, 用于根据所述回程容量提升信息和所述第一节点的标识确 定回程建立指示信息;
发送模块, 用于向所述 UE发送所述回程建立指示信息, 所述回程建 立指示信息包含所述 UE建立与所述第一节点及所述第二节点回程链路所 需要的无线资源控制协议 RRC配置信息;
所述接收模块, 还用于接收所述 UE发送的回程建立完成信息, 根据 所述回程建立完成信息建立所述第一节点通过所述 UE与所述第二节点的 回程链路。
35、 根据权利要求 34所述的节点, 其特征在于, 所述回程容量提升信 息为所述第一节点的回程需求指示或所述第一节点的回程需求等级。
36、 根据权利要求 34或 35所述的节点, 其特征在于, 还包括: 建立模块, 用于在所述接收模块接收用户设备 UE发送的请求信息之 前, 建立与所述 UE的 RRC连接;
所述发送模块, 还用于向所述 UE发送测量控制信息, 以使所述 UE 根据所述测量控制信息周期性读取所述第一节点的系统信息并测量所述 第一节点的信号质量。
37、一种建立回程链路系统,其特征在于,包括: 上述权利要求 19〜28 任意一项所述的用户设备; 权利要求 29〜33任意一项所述的节点; 权利要 求 34〜36任意一项所述的节点。
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