WO2019214693A1 - 确定父节点的方法及装置 - Google Patents

确定父节点的方法及装置 Download PDF

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Publication number
WO2019214693A1
WO2019214693A1 PCT/CN2019/086283 CN2019086283W WO2019214693A1 WO 2019214693 A1 WO2019214693 A1 WO 2019214693A1 CN 2019086283 W CN2019086283 W CN 2019086283W WO 2019214693 A1 WO2019214693 A1 WO 2019214693A1
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WO
WIPO (PCT)
Prior art keywords
node
information
type
parent
backhaul link
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PCT/CN2019/086283
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English (en)
French (fr)
Inventor
杨瑾
毕峰
陈琳
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中兴通讯股份有限公司
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Publication of WO2019214693A1 publication Critical patent/WO2019214693A1/zh

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/003Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053Allocation of signaling, i.e. of overhead other than pilot signals
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W4/00Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/06Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W76/00Connection management
    • H04W76/10Connection setup

Definitions

  • the present application relates to the field of communications, and in particular, to a method and apparatus for determining a parent node.
  • 5G fifth generation mobile communication
  • gNB 5G base station
  • ng-eNB 5G base station
  • a wireless backhaul link (Backhaul link) connection needs to be established between the base stations.
  • FIG. 1 is a schematic diagram of a wireless backhaul link between base stations according to the related art. As shown in FIG. 1, gNB B and gNB C are not directly connected to a core network, and thus cannot be used for a base station and a user terminal (UE, User).
  • the information on the access link between the Equipments is sent to the core network.
  • the base station gNB A has a direct connection with the core network, and by establishing a wireless backhaul link connection between gNB A and gNB B, gNB A and gNB C, the base station (gNB B and gNB) that are not directly connected to the core network can be made.
  • C) Connect to gNB A over the backhaul link and further indirectly connect to the core network. Through the backhaul link forwarding via gNB A, gNB B and gNB C can provide information exchange between the serving UE and the core network.
  • the embodiments of the present application provide a method and apparatus for determining a parent node to at least solve the problem in the related art that a scheme for establishing a backhaul link between base stations applicable to a new system is lacking.
  • a method for determining a parent node including: obtaining, by a first node, parent node reference information, wherein the parent node reference information includes at least one of: the first node and the first node Signal quality information of the wireless link between the two nodes; first type indication information broadcast by the second node; second type indication information sent by the management node; pre-configuration information; the first node according to the parent node
  • the reference information determines the parent node and establishes a backhaul link connection with the parent node.
  • a device for determining a parent node is further applied to the first node, including: a first obtaining module, configured to obtain parent node reference information, where the parent node reference information includes At least one of: signal quality information of a wireless link between the first node and the second node; first type indication information broadcast by the second node; second type indication information sent by the management node; pre-configuration
  • the first determining module is configured to determine a parent node according to the parent node reference information, and a connection module, configured to establish a backhaul link connection with the parent node.
  • a storage medium having stored therein a computer program, wherein the computer program is configured to execute the steps of any one of the method embodiments described above.
  • an electronic device comprising a memory and a processor, wherein the memory stores a computer program, the processor being configured to run the computer program to perform any of the above The steps in the method embodiments.
  • the first node obtains the parent node reference information, where the parent node reference information includes at least one of: signal quality information of the wireless link between the first node and the second node; the second node broadcasts The first type of indication information; the second type of indication information sent by the management node; the pre-configuration information; the first node determines the parent node according to the reference information of the parent node, and establishes a backhaul link connection with the parent node.
  • At least four schemes for determining the parent node are given, which solves the problem that the related art lacks a scheme for establishing a backhaul link between base stations applicable to the new system, and determines the parent node and establishes a backhaul with the parent node.
  • FIG. 1 is a schematic diagram of a wireless backhaul link between base stations according to the related art
  • FIG. 2 is a flowchart of a method of determining a parent node according to an embodiment of the present application
  • FIG. 3 is a first schematic diagram of establishing a backhaul link connection between base stations according to an embodiment of the present application
  • FIG. 4 is a second schematic diagram of establishing a backhaul link connection between base stations according to an embodiment of the present application
  • FIG. 5 is a flowchart of a method for a base station to measure link quality and select a parent node according to an example 1 of method 1 of the embodiment of the present application;
  • FIG. 6 is a schematic flowchart of selecting a parent node by a first node of method 2 according to an embodiment of the present application
  • FIG. 7 is an architectural diagram of a base station selecting a parent node according to example 2 of method 2 of the second embodiment of the present application;
  • FIG. 8 is an architectural diagram of selecting a parent node by a first node of Example 3 of Method 2 according to an embodiment of the present application;
  • FIG. 9 is an architectural diagram of selecting a parent node by a first node of Example 4 of Method 2 according to an embodiment of the present application.
  • FIG. 10 is a flowchart 1 of a method for determining a parent node by a first node according to method 3 of the embodiment of the present application;
  • 11 is a second flowchart of a method for determining a parent node by a first node according to method 3 of the embodiment of the present application;
  • FIG. 12 is a block diagram of a first node selecting a parent node of Example 5 of Method 3 according to an embodiment of the present application.
  • a mobile communication network including but not limited to a 5G mobile communication network
  • the network architecture of the network may include a network side device (for example, a base station) and a terminal.
  • an information transmission method that can be run on the network architecture is provided.
  • the node in the present application may be a base station, and the network side includes one or more of the following entities: an evolved base station (eNB), a relay station (RN), a 5G system base station (gNB, ng-eNB), and a cell cooperative entity.
  • eNB evolved base station
  • RN relay station
  • gNB 5G system base station
  • ng-eNB 5G system base station
  • OFAM Operations Management and Maintenance
  • FIG. 2 is a method for determining a parent node according to an embodiment of the present application.
  • the flow chart, as shown in Figure 2 includes the following steps:
  • Step S202 the first node obtains the parent node reference information, where the parent node reference information includes at least one of: signal quality information of the wireless link between the first node and the second node; the second node broadcasts The first type of indication information; the second type of indication information sent by the management node; the pre-configuration information;
  • Step S204 the first node determines a parent node according to the parent node reference information
  • Step S206 the first node establishes a backhaul link connection with the parent node.
  • the second node in the present application refers to a neighboring node of the first node, and a node capable of detecting that the wireless signal of the other party is received may be referred to as a neighboring node.
  • the first node obtains the parent node reference information, where the parent node reference information includes at least one of: signal quality information of the wireless link between the first node and the second node; the second node broadcasts The first type of indication information; the second type of indication information sent by the management node; the pre-configuration information; the first node determines the parent node according to the parent node reference information and further establishes a backhaul link connection with the parent node.
  • at least four schemes for determining the parent node are given, which solves the problem that the related art lacks a scheme for establishing a backhaul link between base stations applicable to the new system, and determines the parent node and establishes a backhaul with the parent node.
  • step S202 and step S204 are interchangeable, that is, step S204 may be performed first, and then S202 is performed.
  • the first node after determining the parent node, the first node establishes a connection with the parent node, and the parent node connects to the core network element.
  • the first node obtains the parent node reference information, including at least one of the following:
  • the first node measures signal quality of a wireless link with one or more of the second nodes, and obtains signal quality information of a wireless link between the first node and one or more of the second nodes;
  • the first node receives the second type of indication information sent by the management node, where the second type of indication information includes the identification information of the parent node configured by the management node for the first node, and/or the management node is Identification information of the first type of node configured by the first node;
  • the pre-configuration information Determining, by the first node, the pre-configuration information, where the pre-configuration information is indicated by a network side configuration or pre-configured by the first node, where the pre-configuration information includes identifier information of a parent node pre-configured for the first node And/or identification information of the first type of node pre-configured for the first node;
  • the first type of node refers to a node that is directly connected to the core network element.
  • the first node determines the parent node according to the parent node reference information, including at least one of the following:
  • the first node selects one of the second nodes as a parent node according to the first type of indication information of the second node, and the exemplary selection policy may be pre-configured by the network side or pre-defined by the system. Or, the first node itself decides.
  • the first node determines the configured parent node according to the first type of node identifier information indicated in the second type of indication information. Exemplarily, according to the first type of node identification information in the second type of indication information, the first node determines that the indicated first type of node is a parent node; or the first node determines that a second type of node is a parent a node, and the first type node corresponding to the second type node is the first type node configured by the management node, where there is a direct or indirect back link connection between the second type node and the first type node .
  • Determining, by the first node, the configured parent node according to the first type of node identifier information indicated in the pre-configuration information and exemplarily, determining, according to the first type of node identifier information indicated in the pre-configuration information, the first node determines The indicated first type of node is a parent node; or the first node determines that a second type of node is a parent node, and the corresponding first type of node of the second type node is the first type of node, where There is a direct or indirect backhaul link between the second type of node and the first type of node.
  • the first node measures the signal quality of the radio link with the second node, including: obtaining the first node and the second node by measuring at least one of the following signals sent by the second node Signal quality information between the wireless links: system synchronization signal SS; system broadcast signal PBCH; channel state measurement reference signal CSI-RS.
  • the first type of indication information that is broadcast by the second node includes at least one of the following information: first identifier information of the second node, where the first identifier information is a unique identity of the second node in the network. Identification information; the second identifier information of the second node, the second identifier information is used to identify the second node as a management node; the third identifier information of the second node, the third identifier information is used to identify the second Identification information of the first type of node related to the node, where the first type of node related to the second node may be the first type of node adjacent to the second node, or the second node itself is the first type of node; the second The topological distance between the node and the network element of the core network.
  • the topology distance in the present application is equivalent to the hop count and the number of layers in the embodiment; the configuration of the channel state information reference signal CSI-RS of the second node Information; a backhaul link load of the second node, wherein the backhaul link load includes a load of one or more backhaul links to which the second node is connected; and a backhaul link resource of the second node Configuration information, where the backhaul link resource configuration includes resource configuration information of one or more backhaul links to which the second node is connected; and the first type of indication information of one or more neighboring nodes of the second node .
  • the third identifier information is used to identify the identifier information of the first type of node that is related to the second node, and includes one of the following: when the second node is a second type of node, the second node is related to the first node.
  • a class node is a first type of node that is directly or indirectly connected to the second node through a backhaul link, where the second type of node refers to a node that is not directly connected to the core network element;
  • the first type of node associated with the second node refers to the second node itself.
  • the topological distance between the second node and the core network element includes one of the following: the topology distance refers to the number of links that are passed between the second node and the core network element.
  • the passing link includes a backhaul link and a link between the first type of node and the core network element;
  • the topology distance refers to the number of backhaul links passing through the connection between the second node and the core network element
  • the topology distance refers to the number of nodes passing through the connection between the second node and the core network element, wherein the passing node includes a first type node and a second type node, wherein the second type A node is a node that is not directly connected to a core network element.
  • the second node may indicate its own level or hop count in the backhaul link, and the tier or hop count refers to the number of backhaul links that the second node passes between the corresponding first type of nodes, which can be further understood in conjunction with FIG. The above technical solution.
  • the configuration information of the channel state information reference signal CSI-RS of the second node includes at least one of: a period of the CSI-RS, a resource used by the CSI-RS, and a sequence used by the CSI-RS, Antenna configuration information used by the CSI-RS.
  • the backhaul link load of the second node includes at least one of: a number of backhaul links that the second node currently remains connected; a number of child nodes that the second node is currently connected, where the child The node is connected to the core network element through the second node; the number of parent nodes currently connected by the second node.
  • the back link resource configuration information of the second node includes at least one of the following:
  • Time domain and/or frequency domain resource configuration information of the backhaul link of the second node are Time domain and/or frequency domain resource configuration information of the backhaul link of the second node
  • the ratio of the maximum available resources of the backhaul link of the second node where the ratio of the resources of the second node refers to the ratio of the resource amount of the backhaul link of the second node to the resource amount of the access link, or refers to the second The proportion of the backhaul link resource of the node in the total resource amount of the second node.
  • the ratio of the maximum available resources described in the above embodiments can be understood as the maximum proportion of resources allowed to be occupied.
  • the amount of resources refers to the amount of time-frequency and/or frequency-domain resources available on the wireless link.
  • the ratio of the amount of back-link link resources to the amount of access link resources refers to the directly connected backhaul chain of the second node.
  • the first node determines the parent node according to the parent node reference information, including at least one of the following:
  • the first node determines that the second node is a parent node of the first node;
  • the first node obtains second identifier information of the second node from the first type of indication information, and when the second identifier of the second node indicates that the second node is a management node, the first node determines the second node Is the parent node of the first node;
  • the first node obtains the third identifier information of the second node from the first type of indication information, and the identifier information of the first type node indicated by the third identifier of the second node, and the second type of indication information
  • the first node determines that the second node is the parent node of the first node
  • the first node obtains a topological distance of the second node from the first type of indication information, and the second node that selects the least topology distance is the parent node of the first node;
  • the first node obtains CSI-RS configuration information of the second node from the first type of indication information, detects a CSI-RS signal of the second node, and obtains a detection result, where the first node selects the detection result that is optimal.
  • the two nodes are the parent nodes of the first node; the detection result of detecting the CSI-RS signal is optimal, and the signal quality of the detected CSI-RS signals of the second nodes is optimal, or the signal quality is higher than a certain value. .
  • the first node obtains the backhaul link load of the second node from the first type of indication information, and the second node that selects the backhaul link load quantity is the parent node of the first node;
  • the first node obtains backhaul link resource configuration information of the second node from the first type of indication information, and the second node that selects the optimal backhaul link resource configuration is the parent node of the first node.
  • the receiving, by the first node, the second type of indication information sent by the management node including: receiving a handover indication sent by the management node, interrupting a backhaul link connection with the management node, and according to the second type indication
  • the indication in the information determines the parent node and establishes a backhaul link connection with the determined parent node. It should be added that after interrupting the connection with the backhaul link of the management node, the parent node is determined according to the second type of indication information.
  • the entity of the network side may include, but is not limited to, a 5G system base station (gNB, ng-eNB), an evolved base station eNB, a relay station RN, and a cell cooperation entity MCE.
  • gNB 5G system base station
  • ng-eNB 5G system base station
  • eNB evolved base station
  • RN relay station
  • MCE cell cooperation entity
  • the gateway GW, the mobility management device MME, the operation management, and the maintenance OAM manager are specifically described below by taking a base station as an example.
  • a base station functions as a network side device of a radio access network, and has two types: gNB and ng-eNB. Both provide different types of service interfaces for the UE, and both can connect with the 5G core network and implement data interaction with the core network.
  • the two can also be collectively referred to as NG-RAN (NG Radio Access Network) nodes, and the interface between the base stations, that is, the interface between the NG-RAN nodes is called an Xn interface.
  • NG-RAN NG Radio Access Network
  • the gNB when the gNB is directly connected to the core network (such as gNB A), the subordinate serving UE (such as UE A) is connected to gNB A through the access link Access link, and further implemented by gNB A.
  • Information exchange of the core network For gNB B and gNB C, since there is no direct connection with the core network, a backhaul link connection with the gNB A backhaul link needs to be established, and the information of the served UE (such as UE B, UE C) is passed through the backhaul link. Forwarding, indirectly connecting to the core network through gNB A, thereby implementing information interaction between the served UE and the core network.
  • a base station directly connected to a core network is referred to as a first type of node, such as gNB A in FIG. 1, and correspondingly, a base station not directly connected to the core network is referred to as a second type.
  • FIG. 3 is a first schematic diagram of establishing a backhaul link connection between base stations according to an embodiment of the present application. As shown in FIG. 3, a second type node node C can be connected to another second type node node B and through node. B is indirectly connected to node A of the first type to connect to the core network.
  • node A is called the parent node of node B
  • node B is called the parent node of node C
  • node B is also called the child node of node A
  • node C is called the child node of node B.
  • the first type of node can be the parent of the second type of node
  • the second type of node can also be the parent of the other second type of node.
  • FIG. 4 is a base station according to an embodiment of the present application.
  • Figure 2 shows the connection of the backhaul link.
  • the First hop backhual can be the first hop backhaul link in Chinese.
  • the Second hop backhaul can be interpreted as the second hop backhaul link.
  • different parent node selections may affect the connection path between the base station and the core network, and further affect the information interaction efficiency, delay, and resource utilization between the base station and the core network. As shown in FIG.
  • node F when node F selects node C as the parent node, node F can be indirectly connected to the core network through the first hop backhaul link; and when node F selects node D as the parent node, Then node F first needs to connect to node D through the second hop backhaul link, and then connect to the core network through the first hop back link of node D and node A.
  • node F selects node C as the parent node, the path that needs to pass is shorter, and the corresponding delay is also lower. Therefore, reasonable and efficient parent node selection is beneficial to the overall efficiency of the system.
  • the second type of node can be indirectly connected to the core network through a multi-hop link, and the backhaul link between the second type of node and the first type of node is called the first hop backhaul link.
  • the backhaul link between the second type of node directly connected to the first type of node and the other second type of node is called the second hop backhaul link, as shown in Figure 4, node B and node.
  • the link between E By analogy, a third hop backhaul link, a fourth hop backhaul link, ... can be defined. On the backhaul link of each hop, there is a relationship between the parent node and the child node.
  • the present application proposes a plurality of methods for determining a parent node, which are used to determine a parent node for the first node, which will be described below in conjunction with specific examples.
  • the first node measures the signal quality of the wireless link with the adjacent node, selects the parent node according to the measurement result, and further establishes a connection with the selected parent node.
  • the link quality of the wireless link directly affects the signal quality and information transmission efficiency of communication on the wireless link. Therefore, selecting the parent node according to the quality of the wireless link between the first node and the adjacent node can effectively protect the selected parent.
  • the information transmission efficiency of the backhaul link between the node and the first node is beneficial to improve resource utilization.
  • the neighboring node refers to other base stations around the first node, including the first type of base station and the second type of base station.
  • the neighboring node is a candidate parent node, which may also be referred to herein as a second node.
  • the first node may measure the link quality of the wireless link with the adjacent node by measuring any one or more of the following signals:
  • PBCH Physical broadcast channel
  • CSI-RS Channel State Information Reference Signal
  • the neighboring node acts as a base station, one or more of the foregoing signals are periodically or in a certain configuration, and the first node may blindly detect and receive according to the sending rule of the corresponding signal, or receive and detect the above signal according to the indication. One or more, and by measuring the received signal, obtain a measurement of the quality of the radio link channel with the corresponding neighboring node.
  • the system synchronization signal SS includes a primary synchronization signal PSS (Primary synchronization signal) and a secondary synchronization signal SSS (Secondary synchronization signal).
  • PSS Primary synchronization signal
  • SSS Secondary synchronization signal
  • the SS and PBCH have system-defined transmission rules and corresponding transmission resource sets, so the first node can obtain the SS by blind detection on the corresponding resources and obtain the measurement result.
  • the PBCH is sent by the base station and carries the system broadcast information of the base station, similar to the SS transmission, and has a system-defined transmission rule and a transmission resource set. Therefore, the first node can blindly detect and receive one or more second nodes on the corresponding resource set.
  • the PBCH includes a PBCH demodulation pilot, and the first node may perform reception measurement on the PBCH according to the PBCH demodulation pilot to obtain a measurement result.
  • the CSI-RS transmission resource is configurable, and the first node needs to obtain the corresponding CSI-RS configuration information, and then receives and detects the CSI-RS of the second node according to the resource and related parameters indicated in the configuration information, and obtains the measurement. result.
  • the first node obtains a link quality measurement result of the backhaul link with each adjacent node according to the measurement of one or more neighboring nodes, and selects the parent node according to the measurement result, and attempts to select with the selected node.
  • the parent node establishes a backhaul link connection.
  • a selection strategy is to select a second node with a high quality of the corresponding backhaul link as its own parent node.
  • the first node may re-measure the wireless link with the one or more second nodes and select the parent node; or the first node The above measurement result can be directly used, another second node is selected as the parent node, and an attempt is made to make a backhaul link connection with the selected parent node.
  • the first node is a newly deployed base station. After the first node is powered on, it needs to search and discover neighboring nodes, and select a parent node to establish a backhaul link connection to implement information interaction with the core network. Take SS in Method 1 as an example.
  • FIG. 5 is a flowchart of a method for a base station to measure link quality and select a parent node according to an example 1 of method 1 of the embodiment of the present application. As shown in FIG. 5, the process of measuring and selecting a parent node by the first node is as follows:
  • Step 1 The first node blindly detects whether there is a synchronization signal SS sent by the second node;
  • Step 2 The first node detects the SSs of the n second nodes, and measures the SS signals of the n second nodes.
  • Step 3 Based on the measurement of step 2, the first node obtains link quality measurement results of each backhaul link with the corresponding n second nodes;
  • Step 4 The first node selects a second node as a parent node according to the measurement result of step 3.
  • Step 5 The first node establishes a backhaul link connection with the selected parent node.
  • the node with the best radio link quality in the measurement result is selected as the parent node.
  • the first node may also act as a UE to initiate a random access procedure to the selected parent node to implement a connection with the parent node.
  • the first node establishes an Access link connection with the parent node.
  • the first node receives the first type of indication information of the neighboring node, and according to the configuration indication in the first type of indication information, selects an optimal parent node according to a certain parent node selection policy, and further establishes a connection with the selected parent node.
  • FIG. 6 is a schematic flowchart of selecting a parent node by a first node according to method 2 of the embodiment of the present application. As shown in FIG. 6, the process of selecting a parent node by a first node includes:
  • Step 1 The first node detects that the broadcast message of the second node is received.
  • Step 2 The first node detects the broadcast messages of the n second nodes, and obtains the first type of indication information of each second node respectively.
  • Step 3 The first node selects a second node as a parent node according to the first type indication information of the obtained n second nodes according to the parent node selection policy.
  • Step 4 The first node establishes a backhaul link connection with the selected parent node.
  • the first type of indication information is sent in a broadcast message of the second node, and includes indication information related to the backhaul link, and includes at least one of the following:
  • the second node serves as identification information of the management node
  • the identifier information of the second node refers to the identity information of the base station itself, such as the ID of the second node, the cell ID, and the like.
  • the first node may identify the second node by using the identification information of the second node, and distinguish the plurality of second nodes.
  • the second node When the second node is the management node, the second node indicates its identification information as the management node in the first type of indication information.
  • the management node means that the second node has the function and authority to manage other neighboring nodes, and the neighboring nodes need to perform backhaul link connection or communication according to the configuration instruction of the management node.
  • the first node selects the parent node, if the second node is a management node, the second node has a higher preference level and is selected as the parent node.
  • the second node When the second node is a second type of node, the second node may indicate the identification information of the first type of node directly or indirectly connected thereto, that is, the root node information, for example, the gNB ID, the cell ID, and the like indicating the corresponding first type of node.
  • the second node When the second node itself is the first type of node, the second node may indicate its identity information as the first type of node.
  • the first node may identify the first type node corresponding to the second node as a reference when the parent node is selected, thereby selecting the corresponding first type node as the root node of the access core network.
  • the second node can indicate its own topological distance in the backhaul link network.
  • the topological distance refers to the logical distance between the node and the core network in the backhaul link topology. It can be defined as:
  • the number of traversed links in the connection between the node and the core network element wherein the traversed link includes a backhaul link and a link between the first type of node and the core network element Or the number of backhaul links passing through the connection between the node and the core network element; or the number of nodes passing through the connection between the node and the core network element, where
  • the passing nodes include a first type of node and a second type of node; or, defined as a level or a hop count, the level or hop count refers to a backhaul link that passes between the second node and the corresponding first type of node. Quantity. For example, in the backhaul link structure shown in FIG.
  • node D is a second type of node, and after connecting to the core network through the node node A/node C of the first type, node A/node C is called the first hop node, or The first level node, the corresponding node D is called the second hop node, or the second level node.
  • node E can be referred to as a third hop node, or a third tier node.
  • the hop count or level of the second node in the backhaul link refers to the hierarchical position of the node in the backhaul link, which reflects the number of backhaul links that the node needs to go through to the core network.
  • the first node may determine the location of the second node in the backhaul link structure as the basis for selecting the parent node. For example, a second node with a smaller tier or hop count has a higher priority as a parent node.
  • the second node may also indicate its own CSI-RS configuration in the first type of indication information, including, for example, a CSI-RS period, a resource, a sequence used, an antenna-related configuration, and the like.
  • the first node may receive a CSI-RS signal for detecting the second node according to the CSI-RS configuration of the second node, thereby implementing a more accurate measurement of the wireless link with the second node, and using the measurement result for the parent. The decision of the node selection.
  • the backhaul link load of the second node may be represented by any one or more of the following methods: the number of backhaul links that the second node is currently connected to; the number of child nodes that the second node is currently connected; the current connection of the second node Number of parent nodes; backhaul link resource configuration of the second node, such as backhaul link time domain and/or frequency domain resource configuration of the second node, or backhaul link time domain and/or frequency domain resource configuration of the second node The ratio of the time domain and/or frequency domain resource configuration of the access link, or the ratio of the backhaul link time domain and/or frequency domain resource configuration of the second node to the total resource amount; the back link of the second node The maximum amount of available resources, or the maximum available resources.
  • the first node can determine the capacity of the backhaul link communication that the second node can provide as the parent node, as the basis for selecting the parent node.
  • the backhaul link resource configuration of the second node refers to resource configuration for the backhaul link in all available time domain and frequency domain resources of the second node, for example, including the backhaul link time domain resource of the second node and/or Or frequency domain resource configuration.
  • the first node can determine the capacity of the backhaul link communication that the second node can provide as the parent node, as the basis for selecting the parent node.
  • the related information of the other neighboring nodes means that the second node can indicate the corresponding first type of indication information of other surrounding nodes in the first type of indication information of the second node, that is, forward the information of the other neighboring nodes as the second node.
  • the second node indicates related information of other neighboring nodes, which is beneficial for the first node to obtain more information of the neighboring nodes, thereby providing more judgment basis for the parent node selection.
  • the first node receives the first type of indication information from the second node, obtains any one or more of the foregoing information, further selects a neighboring node as a parent node according to a certain parent node selection policy, and attempts to The selected parent establishes a backhaul link connection.
  • the parent node selection policy may be predefined by the system, pre-configured by the network side, or implemented by the base station.
  • the parent node selection strategy can be combined with any one or more of the above information as the basis for the selection decision.
  • the first node may re-run the parent node selection policy, reselect another neighboring node as the parent node, and try to contact the selected parent node. Make a backhaul link connection.
  • the first node receives the system broadcast message of the neighboring neighboring nodes, and obtains the first type of indication information, which includes an indication of the number of backhaul link hops of the second node.
  • the first node selects the second node with the least number of hops as the parent node according to the hop count of the plurality of second nodes, and establishes a backhaul link connection with the parent node to implement information interaction with the core network.
  • FIG. 7 is a structural diagram of selecting a parent node by a base station according to method 2 of method 2 of the method according to the embodiment of the present application.
  • node B is a first node, and a parent node is selected to implement connection with a core network.
  • the Node B obtains the first type of indication information of the adjacent second nodes node A and node C by detecting.
  • the first type of indication information of the node A indicates that the node A is the first hop node, or indicates that the topological distance of the node A is 1, that is, the direct connection with the core network, and the indication of the first type of indication information of the node C Node C is the second hop node, or indicates that the topological distance of node C is 2, that is, it needs to be connected to the core network through an indirect connection of a certain first type of node.
  • the first node selects a node with fewer hops or a node with a smaller topological distance as the parent node according to the predefined parent node selection policy of the system, that is, selects node A as the parent node.
  • node B initiates a connection establishment request to node A and establishes a backhaul link connection with node A.
  • node B performs a random access procedure to establish an Access link with the parent node.
  • the first node receives the system broadcast message of the neighboring nodes, and obtains the first type of indication information, where the identifier information of the second node is included.
  • the first node selects the second node identified as the management node as the parent node according to the identification information of the plurality of second nodes, and establishes a backhaul link connection with the parent node to implement information interaction with the core network.
  • FIG. 8 is a structural diagram of selecting a parent node of a first node according to method 3 of method 2 according to an embodiment of the present application.
  • node E is a first node, and a parent node is selected to implement connection with a core network.
  • Node E obtains the first type of indication information of the adjacent nodes node B and node D respectively.
  • the first type of indication information of the node D indicates that the node D is a backhaul link management node and has a management function for the backhaul link.
  • the first node selects the management node as the parent node according to the predefined parent node selection policy of the system, that is, selects node D as the parent node.
  • node E initiates a connection establishment request to node D and establishes a backhaul link connection with node D.
  • the first node receives the system broadcast message of the surrounding second node, and obtains the first type of indication information, where the CSI-RS configuration information of the second node is included. Further, the first node detects that the CSI-RS of each second node is received, and according to the measurement result of the CSI-RS, selects a second node with a higher radio link quality between the first node as a parent node, and the parent The node establishes a backhaul link connection to implement information exchange with the core network.
  • FIG. 9 is a structural diagram of selecting a parent node of a first node according to method 4 of method 2 of the embodiment of the present application.
  • node E is a first node, and a parent node is selected to implement connection with a core network.
  • Node E obtains the first type of indication information of the adjacent nodes node A, node B and node D respectively.
  • Each of the second nodes indicates a respective CSI-RS configuration.
  • the first node receives the CSI-RS signals of the respective second nodes according to the indicated CSI-RS configuration, and measures the radio link quality between the nodes A, node B, and node D.
  • the measurement result of the first node is that the radio link condition between node D and node D is optimal, and the first node selects the node with the best channel condition as the parent node, that is, selects node D as the parent node.
  • node E initiates a connection establishment request to node D and establishes a backhaul link connection with node D.
  • the first node receives the second type of indication information of the management node, where the management node indicates the parent node information configured for the first node, or indicates the configured first type of node information, and further, the first node establishes with the configured parent node. Connect, or according to the indicated first type of node, determine the parent node and establish a connection with the determined parent node.
  • FIG. 10 is a flowchart 1 of a method for determining a parent node by a first node according to method 3 of the embodiment of the present application. As shown in FIG. 10, the process of determining a parent node by a first node includes:
  • Step 1 The first node receives the second type of indication information, and the second type of indication information is sent by the management node.
  • Step 2 The first node obtains the identifier information of the configured parent node from the second type of indication information.
  • Step 3 The first node establishes a backhaul link connection with the configured parent node.
  • FIG. 11 is a flowchart 2 of a method for determining a parent node by a first node according to method 3 of the embodiment of the present application. As shown in FIG. 11, the process for determining a parent node by a first node includes:
  • Step 1 The first node receives the second type of indication information of the management node.
  • Step 2 The first node obtains, from the second type of indication information, identification information of the first type of node indicated by the management node configuration.
  • Step 3 The first node determines the parent node according to the indicated first type node
  • Step 4 The first node establishes a backhaul link connection with the determined parent node.
  • the second type of indication information is indicated by the management node to the first node by using high layer signaling, for example, by using RRC (Radio Resource Control) signaling indication.
  • RRC Radio Resource Control
  • the second type of indication information includes the identification information of the parent node configured for the first node, such as the configured gNB ID of the parent node, the cell ID, and the like. Based on this identification information, the first node can uniquely determine the configured parent node. Or the second type of indication information includes the identifier information of the first type of node configured for the first node, such as the gNB ID, the cell ID, and the like of the configured first type of node. Based on this identification information, the first node can uniquely determine the configured first type of node.
  • the first node establishes a backhaul link connection with the configured parent node, and may initiate a connection to the parent node through random access, or initiate a connection to the parent node by using non-competitive random access according to the configuration of the management node, or The connection to the parent node is achieved through the switching process.
  • the method can also be used to manage the node configuration to adjust the parent node of the first node.
  • the current node has a corresponding parent node, and a backhaul link connection is established with the parent node, and the management node may reconfigure another base station as the parent node of the first node for the first node, and indicate that the first node is heavy.
  • the configured parent node ID and indicates that the first node establishes a connection with the reconfigured parent node.
  • the management node may also instruct the first node to interrupt the connection with the previous parent node.
  • the first node has a backhaul link connection with the management node, and the management node controls the backhaul link connection and communication of the first node, including configuring or reconfiguring the parent node for the first node.
  • FIG. 12 is a structural diagram of a first node selecting a parent node according to example 5 of method 3 of the method according to the embodiment of the present application.
  • node E is a first node
  • node A is a management node
  • node E is configured according to node A.
  • Node A first indicates that node B is the parent node through the RRC message, and node E establishes a backhaul link connection with node B according to the second type indication information indicated by node A, and performs data interaction with the core network.
  • node B Due to the change of the overall load of the backhaul link, the service that node B can provide as the parent node of node E cannot meet the requirements of node E, then it is requested by node E or the control of the management node, and node A indicates the second update to node E.
  • Class indication information reconfigure node D as the parent node for node E. Based on the indication information, Node E establishes a connection with node D and interrupts the connection with the original parent node B.
  • the centralized management node can coordinate the connection relationship of the backhaul link, thereby managing the load sharing and resource allocation of the backhaul link, achieving higher resource utilization, and the system. performance.
  • the first node has a backhaul link connection with the management node, and the management node controls the backhaul link connection and communication of the first node, including configuring a corresponding first type node for the first node.
  • node E is the first node
  • node D is the management node
  • node E determines the parent node according to the configuration instruction of node D.
  • Node D indicates to node E that the corresponding first type node is node A through RRC message, and node E should select the path with node A as the root node to establish a connection with the core network.
  • Node E first searches for neighbor nodes to connect directly to node A. If node E and node A are adjacent nodes, node E directly establishes a connection with node A; when node E cannot directly receive the signal of node A, node E searches for the adjacent second type of node to determine the node B connection.
  • the first type of node is node A, and node E determines that node B is the parent node and establishes a backhaul link connection with node B, thereby connecting indirectly to node A. Further, node E performs data interaction with the core network through the parent node.
  • the first node determines the parent node according to the pre-configuration, and further establishes a connection with the pre-configured parent node.
  • the base station Since the base station belongs to the network side node and is managed and managed by the operator, the base station itself can be pre-configured, including pre-configuring the corresponding parent node or the corresponding first type node for the first node.
  • the pre-configuration may be written by the network side through the OAM to send configuration information, or the pre-configuration information carried by the base station itself.
  • the first node needs to search for the configured first type node as its own parent node in the adjacent node; or the first node selects and configures the first type A node having a direct or indirect backhaul link is used as a parent node, and is connected indirectly to the configured first type node through a backhaul link with the parent node, and implements a connection with the core network.
  • the first node is written with pre-configuration information when the network is deployed.
  • the pre-configuration information is written to write configuration information related to the operation of the first node, including the parent node identification information, in the software memory of the first node.
  • the first node After the first node is powered on, it reads the pre-configuration information in its own memory to obtain the parent node identification information. Further, the first node searches for the configured parent node in the neighboring cell according to the pre-configured parent node information. The first node can determine whether the configured parent node is configured by detecting the broadcast message of the neighboring node, where the identification information of each neighboring node is identified. When the first node detects the configured parent node in the neighboring node, initiates a connection establishment to the parent node and establishes a backhaul link connection with the parent node. When the first node does not detect the pre-configured parent node in the neighboring node, the first node may determine the parent node by using any one of the foregoing methods 1 to 3, and establish a backhaul link connection. Core network communication.
  • the first node determines the method of determining the parent node according to the configuration and/or according to the configuration indication, determines the parent node and establishes a wireless link connection with the parent node, and implements the relay to the core network through the relay forwarding of the parent node. Communication.
  • the problem that the base station cannot effectively determine the parent node of the backhaul link in the 5G communication system is solved.
  • the backhaul link parent node is determined by the measurement of the base station or the information indication of the neighboring node, and a backhaul link connection is established with the parent node. This method can be used to establish a backhaul link between base stations, and achieve flexible and efficient backhaul link organization, which is beneficial to improving resource utilization and meeting UE service requirements.
  • the method according to the above embodiment can be implemented by means of software plus a necessary general hardware platform, and of course, by hardware, but in many cases, the former is A better implementation.
  • the technical solution of the present application which is essential or contributes to the prior art, may be embodied in the form of a software product stored in a storage medium (such as ROM/RAM, disk,
  • the optical disc includes a number of instructions for causing a terminal device (which may be a mobile phone, a computer, a server, or a network device, etc.) to perform the methods described in various embodiments of the present application.
  • a device for determining a parent node is provided, and the device is used to implement the foregoing embodiments and preferred embodiments, and details are not described herein.
  • the term "module” may implement a combination of software and/or hardware of a predetermined function.
  • the apparatus described in the following embodiments is preferably implemented in software, hardware, or a combination of software and hardware, is also possible and contemplated.
  • a device for determining a parent node which is applied to a first node, and includes:
  • a first obtaining module configured to obtain parent node reference information, where the parent node reference information includes at least one of the following:
  • the first type of indication information broadcast by the second node is the first type of indication information broadcast by the second node
  • the second type of indication information sent by the management node is the second type of indication information sent by the management node.
  • a first determining module connected to the first obtaining module, configured to determine a parent node according to the parent node reference information
  • connection module connected to the first determining module, configured to establish a backhaul link connection with the parent node.
  • the first obtaining module is configured to obtain parent node reference information, where the parent node reference information includes at least one of: signal quality information of a wireless link between the first node and the second node.
  • the first type of indication information broadcasted by the second node; the second type of indication information sent by the management node; the pre-configuration information; the first determining module is configured to determine the parent node according to the reference information of the parent node.
  • the first obtaining module further includes at least one of the following:
  • a first measuring unit configured to measure a signal quality of a wireless link with one or more of the second nodes, to obtain a wireless link between the first node and one or more of the second nodes Signal quality information
  • a first receiving unit configured to receive broadcast information sent by one or more of the second nodes, where the first type of indication information is included
  • a second receiving unit configured to receive the second type of indication information that is sent by the management node, where the second type of indication information includes identifier information of a parent node configured by the management node for the first node, And/or, the management node is identification information of the first type of node configured by the first node;
  • a first determining unit configured to determine the pre-configuration information, where the pre-configuration information is indicated by a network side configuration or pre-configured by the first node, where the pre-configuration information is included as the first node Identification information of the pre-configured parent node, and/or identification information of the first type of node pre-configured for the first node;
  • the first type of node refers to a node that is directly connected to a core network element.
  • the first determining module is further used in at least one of the following:
  • the first measurement unit is further configured to obtain, by measuring at least one of the following signals sent by the second node, signal quality information of a wireless link between the first node and the second node. :
  • Channel state measurement reference signal CSI-RS Channel state measurement reference signal
  • the first type of indication information broadcast by the second node includes at least one of the following information:
  • the first identifier information of the second node where the first identifier information is unique identifier information of the second node in the network;
  • the second identifier information of the second node where the second identifier information is used to identify the second node as a management node;
  • the third identifier information of the second node where the third identifier information is used to identify identifier information of the first type of node related to the second node;
  • the channel state information of the second node refers to configuration information of a signal CSI-RS
  • the backhaul link load includes a load of one or more backhaul links to which the second node is connected;
  • the backhaul link resource configuration information of the second node where the backhaul link resource configuration includes resource configuration information of one or more backhaul links to which the second node is connected;
  • the first type of indication information of one or more neighboring nodes of the second node is the first type of indication information of one or more neighboring nodes of the second node.
  • the third identifier information is used to identify identifier information of the first type of node related to the second node, including one of the following:
  • the first type of node related to the second node is a first type of node that is directly or indirectly connected by the second node through a backhaul link, where the second A class node is a node that is not directly connected to a core network element;
  • the first type of node related to the second node refers to the second node itself.
  • the topological distance between the second node and the core network element includes one of the following:
  • the topology distance refers to the number of links that pass through the connection between the second node and the core network element, wherein the passed link includes a backhaul link and the first type of node. a link with a core network element;
  • the topological distance refers to the number of backhaul links passing through the connection between the second node and the core network element
  • the topological distance refers to the number of nodes passing through the connection between the second node and the core network element, wherein the passing node includes a first type node and a second type node, where The second type of node refers to a node that is not directly connected to the core network element.
  • the configuration information of the channel state information reference signal CSI-RS of the second node includes at least one of the following:
  • a period of the CSI-RS a resource used by the CSI-RS, a sequence used by the CSI-RS, and antenna configuration information used by the CSI-RS.
  • the backhaul link load of the second node includes at least one of the following:
  • the number of parent nodes to which the second node is currently connected is the number of parent nodes to which the second node is currently connected.
  • the back link resource configuration information of the second node includes at least one of the following:
  • Time domain and/or frequency domain resource configuration information of the backhaul link of the second node are Time domain and/or frequency domain resource configuration information of the backhaul link of the second node
  • the ratio of the maximum available resources of the back link of the second node refers to the ratio of the resources of the back link of the second node to the resources of the access link, or refers to The proportion of the backhaul link resource of the second node in the total resource amount of the second node.
  • the first determination is further used for at least one of the following:
  • the second node is a parent node of the first node
  • the identifier information of the first type of node indicated by the third identifier of the second node is the same as the first type of node identifier information indicated in the second type of indication information, or the pre-configuration information
  • the first type of node identification information indicated in the same is the same, determining that the second node is a parent node of the first node;
  • the second receiving unit is further configured to receive a handover indication sent by the management node, where the first determining module is further configured to interrupt a backhaul link connection with the management node, and according to the second The indication in the class indication information determines a parent node, and the connection module is further configured to establish a backhaul link connection with the determined parent node.
  • each of the above modules may be implemented by software or hardware.
  • the foregoing may be implemented by, but not limited to, the foregoing modules are all located in the same processor; or, the above modules are in any combination.
  • the forms are located in different processors.
  • a storage medium having stored therein a computer program, wherein the computer program is configured to execute the steps of any one of the method embodiments described above.
  • an electronic device comprising a memory and a processor, wherein the memory stores a computer program, the processor being configured to run the computer program to perform any of the above The steps in the method embodiments.
  • modules or steps of the present application can be implemented by a general computing device, which can be concentrated on a single computing device or distributed in a network composed of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein.
  • the steps shown or described are performed, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps thereof are fabricated as a single integrated circuit module.
  • the application is not limited to any particular combination of hardware and software.

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Abstract

本申请提供了一种确定父节点的方法及装置,其中,该方法包括:第一节点获得父节点参考信息,其中,该父节点参考信息包括以下至少之一:该第一节点与第二节点之间的无线链路的信号质量信息;该第二节点广播的第一类指示信息;管理节点发送的第二类指示信息;预配置信息;该第一节点根据该父节点参考信息确定父节点。采用上述技术方案,至少给出了四种确定父节点的方案,解决了相关技术中缺乏适用于新系统的基站之间建立回程链路的方案的问题,采用确定父节点并与父节点建立回程链路的方法,实现基站或节点之间进行回程链路数据传输。 (图2)

Description

确定父节点的方法及装置 技术领域
本申请涉及通信领域,具体而言,涉及一种确定父节点的方法及装置。
背景技术
在相关技术中,随着无线通信技术的发展和用户对通信需求的日益增加,为了满足更高、更快和更新的通信需要,第五代移动通信(5th Generation,简称为:5G)技术已成为未来网络发展的趋势。
在5G通信系统中,由于系统使用的频段资源,网络部署需求等因素,5G基站(gNB或ng-eNB)的部署密度较高,其中部分基站不具备与核心网的直接连接。为了达到更低的网络铺设成本,同时提供稳定的网络服务,获得更高的资源效率以及网络部署灵活性,需要为基站之间建立无线回程链路(Backhaul link)连接。图1是根据相关技术中的基站之间的无线回程链路的示意图,如图1所示,gNB B和gNB C本身没有与核心网的直接连接,因此无法将基站与用户终端(UE,User Equipment)之间的接入链路(Access link)上的信息发送到核心网。而基站gNB A具有与核心网的直接连接,则通过在gNB A与gNB B,gNB A与gNB C之间建立无线回程链路连接,可以使没有与核心网直接连接的基站(gNB B和gNB C)通过回程链路连接至gNB A,进一步的间接连接到核心网。通过经由gNB A的回程链路转发,gNB B和gNB C可以为所服务的UE提供与核心网之间的信息交换。
在5G通信系统中,基站之间在回程链路上的连接及通信还没有相应的解决方案,使5G基站无法与邻近基站建立回程链路连接。针对这类问题,目前尚未提出有效的解决方案。
针对相关技术中缺乏适用于新系统的基站之间建立回程链路的方案的问题,目前还没有有效的解决方案。
发明内容
本申请实施例提供了一种确定父节点的方法及装置,以至少解决相关技术中缺乏适用于新系统的基站之间建立回程链路的方案的问题。
根据本申请的一个实施例,提供了一种确定父节点的方法,包括:第一节点获得父节点参考信息,其中,所述父节点参考信息包括以下至少之一:所述第一节点与第二节点之间的无线链路的信号质量信息;所述第二节点广播的第一类指示信息;管理节点发送的第二类指示信息;预配置信息;所述第一节点根据所述父节点参考信息确定父节点,并与所述父节点建立回程链路连接。
根据本申请的另一个实施例,还提供了一种确定父节点的装置,应用于第一节点,包括:第一获取模块,用于获得父节点参考信息,其中,所述父节点参考信息包括以下至少之一:所述第一节点与第二节点之间的无线链路的信号质量信息;所述第二节点广播的第一类指示信息;管理节点发送的第二类指示信息;预配置信息;第一确定模块,用于根据所述父节点参考信息确定父节点;连接模块,用于与所述父节点建立回程链路连接。
根据本申请的又一个实施例,还提供了一种存储介质,所述存储介质中存储有计算机程序,其中,所述计算机程序被设置为运行时执行上述任一项方法实施例中的步骤。
根据本申请的又一个实施例,还提供了一种电子装置,包括存储器和处理器,所述存储器中存储有计算机程序,所述处理器被设置为运行所述计算机程序以执行上述任一项方法实施例中的步骤。
通过本申请,第一节点获得父节点参考信息,其中,该父节点参考信息包括以下至少之一:该第一节点与第二节点之间的无线链路的信号质量信息;该第二节点广播的第一类指示信息;管理节点发送的第二类指示信息;预配置信息;该第一节点根据该父节点参考信息确定父节点,并与该父节点建立回程链路连接。采用上述技术方案,至少给出了四种确定父节点的方案,解决了相关技术中缺乏适用于新系统的基站之间建立回程链路的方案的问题,采用确定父节点并与父节点建立回程链路的方法,实现基站或节点之间进行回程链路数据传输。
附图说明
此处所说明的附图用来提供对本申请的进一步理解,构成本申请的一部分,本申请的示意性实施例及其说明用于解释本申请,并不构成对本申请的不当限定。在附图中:
图1是根据相关技术中的基站之间的无线回程链路的示意图;
图2是根据本申请实施例的确定父节点的方法的流程图;
图3是根据本申请实施例的基站之间建立回程链路连接的示意图一;
图4是根据本申请实施例的基站之间建立回程链路连接的示意图二;
图5是根据本申请实施例方法一的实例一的基站测量链路质量并选择父节点的方法流程图;
图6是根据本申请实施例方法二的第一节点选择父节点的流程示意图;
图7是根据本申请实施例方法二的实例二的基站选择父节点的架构图;
图8是根据本申请实施例方法二的实例三的第一节点选择父节点的架构图;
图9是根据本申请实施例方法二的实例四的第一节点选择父节点的架构图;
图10是根据本申请实施例方法三的第一节点确定父节点的方法流程图一;
图11是根据本申请实施例方法三的第一节点确定父节点的方法流程图二;
图12是根据本申请实施例方法三的实例五的第一节点选择父节点的架构图。
具体实施方式
下文中将参考附图并结合实施例来详细说明本申请。需要说明的是,在不冲突的情况下,本申请中的实施例及实施例中的特征可以相互组合。
需要说明的是,本申请的说明书和权利要求书及上述附图中的术语“第一”、“第二”等是用于区别类似的对象,而不必用于描述特定的顺序或先后次序。
本申请实施例中提供了一种移动通信网络(包括但不限于5G移动通信网络),该网络的网络架构可以包括网络侧设备(例如基站)和终端。在本实施例中提供了一种可运行于上述网络架构上的信息传输方法,需要说明的是,本申请实施例中提供的上述信息传输方法的运行环境并不限于上述网络架构。本申请文件中的节点可以是基站,网络侧包括包括以下实体中的一种或多种:演进型基站(eNB)、中继站(RN)、5G系统基站(gNB,ng-eNB),小区协作实体(MCE)、网关(GW)、移动性管理设备(MME)、演进型通用陆地无线接入网(EUTRAN)操作管理及维护(OAM)管理器。
实施例一
本申请文件中的可以应用于图1的场景中,在本实施例中提供了一种运行于上述网络架构的确定父节点的方法,图2是根据本申请实施例的确定父节点的方法的流程图,如图2所示,该流程包括如下步骤:
步骤S202,第一节点获得父节点参考信息,其中,该父节点参考信息包括以下至少之一:该第一节点与第二节点之间的无线链路的信号质量信息;该第二节点广播的第一类指示信息;管理节点发送的第二类指示信息;预配置信息;
步骤S204,该第一节点根据该父节点参考信息确定父节点;
步骤S206,该第一节点建立与该父节点的回程链路连接。
本申请文件中的第二节点是指第一节点的相邻节点,能够检测接收到对方的无线信号的节点可称为相邻节点。
通过上述步骤,第一节点获得父节点参考信息,其中,该父节点参考信息包括以下至少之一:该第一节点与第二节点之间的无线链路的信号质量信息;该第二节点广播的第一类指示信息;管理节点发送的第二类指示信息;预配置信息;该第一节点根据该父节点参考信息确定父节点并进一步与父节点建立回程链路连接。采用上述技术方案,至少给出了四种确定父节点的方案,解决了相关技术中缺乏适用于新系统的基站之间建立回程链路的方案的问题,采用确定父节点并与父节点建立回程链路的方法,实现基站或节点之间进行回程链路数据传输。
可选地,步骤S202和步骤S204的执行顺序是可以互换的,即可以先执行步骤S204,然后再执行S202。
可选地,在确定父节点之后,该第一节点建立与该父节点之间的连接,通过该父节点连接至核心网网元。
可选地,该第一节点获得该父节点参考信息,包括以下至少之一:
该第一节点测量与一个或多个该第二节点之间的无线链路的信号质量,获得该第一节点与一个或多个该第二节点之间的无线链路的信号质量信息;
该第一节点接收一个或多个该第二节点发送的广播信息,其中包括该第一类指示信息;
该第一节点接收该管理节点发送的该第二类指示信息,其中该第二类指示信息包含有该管理节点为该第一节点配置的父节点的标识信息,和/或,该管理节点为该第一节点配置的第一类节点的标识信息;
该第一节点确定该预配置信息,其中,该预配置信息由网络侧配置指示或者由该第一节点预配置,其中,该预配置信息包含为该第一节点预配置的父节点的标识信息,和/或为该第一节点预配置的第一类节点的标识信息;
其中,该第一类节点是指与核心网网元有直接连接的节点。
可选地,该第一节点根据该父节点参考信息确定父节点,包括以下至少之一:
该第一节点依据该第一节点与一个或多个该第二节点之间的无线链路的信号质量信息,从中选择一个该第二节点作为该第一节点的父节点,示例性地,可以选择信号质量高于阈值或者最高的第二节点作为父节点;
该第一节点依据一个或多个该第二节点的该第一类指示信息,从中选择一个该第二节点作为父节点,示例性的选择策略可以是网络侧预配置的,或者是系统预定义的,或者是第一节点自身决定的。
该第一节点依据该第二类指示信息中指示的父节点标识信息,确定所配置的父节点;
该第一节点依据该第二类指示信息中指示的第一类节点标识信息,确定所配置的父节点。示例性地,根据该第二类指示信息中的第一类节点标识信息,该第一节点确定所指示的第一类节点为父节点;或者该第一节点确定某个第二类节点为父节点,且该第二类节点相应的第一类节点为该管理节点配置的该第一类节点,这里,该第二类节点与该第一类节点之间有直接或间接的回程链路连接。
该第一节点依据该预配置信息中指示的父节点标识信息,确定所配置的父节点;
该第一节点依据该预配置信息中指示的第一类节点标识信息,确定所配置的父节点,示例性地,根据该预配置信息中指示的第一类节点标识信息,该第一节点确定所指示的该第一类节点为父节点;或者该第一节点确定某个第二类节点为父节点,且该第二类节点相应的第一类节点为该第一类节点,这里,该第二类节点与该第一类节点之间有直接或间接的回程链路连接。
可选地,该第一节点测量与该第二节点之间的无线链路的信号质量,包括:通过测量该第二节点发送的以下信号至少之一,获得该第一节点与该第二节点之间的无线链路的信号质量信息:系统同步信号SS;系统广播信号PBCH;信道状态测量参考信号CSI-RS。
可选地,该第二节点广播的第一类指示信息中,包括以下信息至少之一:该第二节点的第一标识信息,该第一标识信息为该第二节点在网络中的唯一身份标识信息;该第二节 点的第二标识信息,该第二标识信息用于标识该第二节点为管理节点;该第二节点的第三标识信息,该第三标识信息用于标识该第二节点相关的第一类节点的标识信息,此处第二节点相关的第一类节点可以是第二节点周围相邻的第一类节点,或者第二节点本身就是第一类节点;该第二节点与该核心网网元之间拓扑距离,本申请文件中的拓扑距离与实施例中的跳数,层数的概念是相当的;该第二节点的信道状态信息参考信号CSI-RS的配置信息;该第二节点的回程链路负载量,其中,该回程链路负载量包括该第二节点所连接的一条或多条回程链路的负载量;该第二节点的回程链路资源配置信息,其中,该回程链路资源配置包括该第二节点所连接的一条或多条回程链路的资源配置信息;该第二节点的一个或多个相邻节点的该第一类指示信息。
可选地,该第三标识信息用于标识该第二节点相关的第一类节点的标识信息,包括以下之一:该第二节点为第二类节点时,该第二节点相关的第一类节点是指该第二节点通过回程链路直接或间接连接的第一类节点,其中,该第二类节点是指与核心网网元没有直接连接的节点;
该第二节点为第一类节点时,该第二节点相关的第一类节点是指该第二节点自身。
可选地,该第二节点与核心网网元之间拓扑距离,包括以下之一:该拓扑距离是指该第二节点与该核心网网元之间的连接中,经过的链路的数量,其中,该经过的链路包括回程链路和该第一类节点与核心网网元之间的链路;
该拓扑距离是指该第二节点与该核心网网元之间的连接中,经过的回程链路的数量;
该拓扑距离是指该第二节点与该核心网网元之间的连接中,经过的节点的数量,其中,该经过的节点包括第一类节点和第二类节点,其中,该第二类节点是指与核心网网元没有直接连接的节点。第二节点可以指示自己在回程链路中的层级或者跳数,该层级或跳数是指第二节点到相应的第一类节点之间经过的回程链路的数量,可以结合图3进一步理解的上述技术方案。
可选地,该第二节点的信道状态信息参考信号CSI-RS的配置信息,包括以下至少之一:该CSI-RS的周期,该CSI-RS使用的资源,该CSI-RS使用的序列,该CSI-RS使用的天线配置信息。
可选地,该第二节点的回程链路负载量,包括以下至少之一:该第二节点当前保持连接的回程链路数量;该第二节点当前连接的子节点的数量,其中,该子节点通过该第二节点连接至该核心网网元;该第二节点当前连接的父节点的数量。
可选地,该第二节点的回程链路资源配置信息,包括以下至少之一:
该第二节点的回程链路的时域和/或频域资源配置信息;
该第二节点的回程链路的资源量与该第二节点与用户设备之间的接入链路的资源量的比例;
该第二节点的回程链路资源量在该第二节点的总资源量中的占比,其中,该总资源量包括该第二节点在回程链路和接入链路的可用资源总量;
该第二节点的回程链路最大可用的资源量;
该第二节点的回程链路最大可用资源的比例,其中,该资源的比例是指该第二节点的回程链路的资源量与接入链路的资源量的比例,或者是指该第二节点的回程链路资源量在该第二节点的总资源量中的占比。上述实施例中记载的最大可用资源的比例,可以理解为允许占用的资源的最大比例。资源量是指无线链路上可用的时频和/或频域资源量,示例性的,回程链路资源量与接入链路资源量的比例是指该第二节点在直接相连的回程链路上可使用的资源量与接入链路上可使用的资源量的比例。
可选地,该第一节点根据该父节点参考信息确定父节点,包括以下至少之一:
该第一节点从第一类指示信息中获得该第二节点的第一标识信息,当该第二节点的第一标识信息与该第二类指示信息中指示的父节点标识信息,或者与该预配置信息中指示的父节点标识信息相同时,该第一节点确定该第二节点为该第一节点的父节点;
该第一节点从第一类指示信息中获得该第二节点的第二标识信息,当该第二节点的第二标识指示该第二节点为管理节点时,该第一节点确定该第二节点为该第一节点的父节点;
该第一节点从第一类指示信息中获得该第二节点的第三标识信息,当该第二节点的第三标识指示的该第一类节点的标识信息,与该第二类指示信息中指示的第一类节点标识信息相同,或者与该预配置信息中指示的第一类节点标识信息相同时,该第一节点确定该第二节点为该第一节点的父节点;
该第一节点从第一类指示信息中获得该第二节点的拓扑距离,该第一节点选择拓扑距离最小的该第二节点为该第一节点的父节点;
该第一节点从第一类指示信息中获得该第二节点的CSI-RS配置信息,检测该第二节点的CSI-RS信号,获得检测结果,该第一节点选择检测结果最优的该第二节点为该第一节点的父节点;检测CSI-RS信号的检测结果最优,可以为检测到的多个第二节点的CSI-RS信号中信号质量最优,或者信号质量高于一定数值。
该第一节点从第一类指示信息中获得该第二节点的回程链路负载量,该第一节点选择回程链路负载量最优的该第二节点为该第一节点的父节点;
该第一节点从第一类指示信息中获得该第二节点的回程链路资源配置信息,该第一节点选择回程链路资源配置最优的该第二节点为该第一节点的父节点。
可选地,该第一节点接收该管理节点发送的该第二类指示信息,包括:接收该管理节点发送的切换指示,中断与该管理节点的回程链路连接,并根据该第二类指示信息中的指示,确定父节点,与所确定的父节点建立回程链路连接。需要补充的是,在中断与管理节点的回程链路连接后,根据第二类指示信息确定父节点。
下面结合本申请的另一个实施例进一步说明。
在本申请的实施例中,网络侧(如图1中的基站)的实体可以包括但不限于为:5G系统基站(gNB,ng-eNB),演进型基站eNB、中继站RN、小区协作实体MCE、网关GW、移动性管理设备MME、操作管理及维护OAM管理器,下面以基站为例进行具体 说明。
在5G通信系统中,基站作为无线接入网络的网络侧设备,有两种类型:gNB与ng-eNB。二者面向UE提供不同类型的服务接口,且都能够与5G核心网连接并实现与核心网之间的数据交互。二者也可以统称为NG-RAN(NG Radio Access Network)节点,基站间的接口,即NG-RAN节点之间的接口称为Xn接口。在本申请的说明中,以gNB为例进行说明,ng-eNB同样可应用本申请的任意方案。
如图1所示,当gNB与核心网有直接连接时(如gNB A),其下属服务的UE(如UE A)通过接入链路Access link与gNB A连接,进一步的通过gNB A实现与核心网的信息交互。而对于gNB B与gNB C,由于没有与核心网的直接连接,则需要建立与gNB A的回程链路Backhaul link连接,将所服务的UE(如UE B,UE C)的信息通过回程链路转发,通过gNB A间接连接到核心网,从而实现所服务UE与核心网之间的信息交互。
在本申请中,为了描述的清楚,将与核心网有直接连接的基站称为第一类节点,如图1中的gNB A,相应的,与核心网没有直接连接的基站称为第二类节点,如图1中的gNB B和gNB C。
由于回程链路接口是无线接口,即第一类节点与第二类节点之间需要建立无线连接。另外,多个第二类节点之间也可以建立回程链路连接。图3是根据本申请实施例的基站之间建立回程链路连接的示意图一,如图3所示,一个第二类节点node C可以通过连接到另一个第二类节点node B,并通过node B间接连接到第一类节点node A,从而连接到核心网。此时,node A称为node B的父节点,node B称为node C的父节点,node B也称为node A的子节点,node C称为node B的子节点。可以看到,第一类节点可以作为第二类节点的父节点,第二类节点也可以作为另一个第二类节点的父节点。
在实际的5G通信系统中,基站的部署可能较为密集,则对任意一个基站来说,周围都可能存在多个第一类节点或第二类节点,图4是根据本申请实施例的基站之间建立回程链路连接的示意图二,如图4所示,First hop backhual可以是中文释义第一跳回程链路,Second hop backhaul可以中文释义为第二跳回程链路,此时,对一个基站来说,不同的父节点选择会影响基站与核心网之间的连接路径,进一步的影响基站与核心网之间的信息交互效率,时延,资源利用率等。如图3中所示,当node F选择node C为父节点,则node F可通过第一跳(the first hop)回程链路间接连接到核心网;而当node F选择node D作为父节点,则node F首先需要通过第二跳(the second hop)回程链路连接到node D,再通过node D与node A的第一跳回程链路连接至核心网。显然,这两种路径方式中,node F选择node C为父节点时,所需要经过的路径更短,相应的时延也会更低。因此合理高效的父节点选择有利于系统的整体效率提升。
在5G系统中,第二类节点可以通过多跳链路间接连接到核心网,第二类节点与第一类节点之间的回程链路称为第一跳回程链路the first hop Backhaul link,如图4中node A与node B之间的链路。相应的,与第一类节点直接相连的第二类节点与另一个第二类节 点之间的回程链路称为第二跳回程链路the second hop Backhaul link,如图4中node B与node E之间的链路。依次类推,可以定义第三跳回程链路,第四跳回程链路,...。在每一跳的回程链路上,都存在父节点与子节点的关系。
为了实现合理高效的父节点选择,本申请提出了多种确定父节点的方法,用于为第一节点确定父节点,下面结合具体实例进行说明。
方法一
第一节点测量与相邻节点之间的无线链路的信号质量,根据测量结果选择父节点,并进一步与所选择的父节点建立连接。
无线链路的链路质量直接影响在无线链路上进行通信的信号质量及信息传输效率,因此根据第一节点与相邻节点间的无线链路质量选择父节点,能够有效保障所选择的父节点与第一节点之间的回程链路的信息传输效率,有利于提高资源利用率。
这里,相邻节点是指第一节点周围的其他基站,包括第一类基站和第二类基站。相邻节点作为候选的父节点,这里也可以称为第二节点。
示例性的,第一节点可以通过测量下列信号中的任意一种或多种,实现对与相邻节点间无线链路的链路质量的测量:
系统同步信号SS(Synchronization Signal);
系统广播信号PBCH(Physical broadcast channel);
信道状态测量导频CSI-RS(Channel State Information Reference Signal)。
可能还有别的测量链路质量的方案,不局限于上述举例。
由于相邻节点作为基站,会周期性或者按一定配置发送上述信号中的一种或多种,第一节点可以按照相应信号的发送规则,盲检测接收,或按指示接收并检测上述信号中的一种或多种,并通过对所接收信号的测量,获得与相应相邻节点之间的无线链路信道质量的测量结果。
其中,系统同步信号SS包括主同步信号PSS(Primary synchronization signal)和辅同步信号SSS(Secondary synchronization signal)。SS和PBCH有系统定义的发送规则和相应的发送资源集合,因此第一节点可以通过在相应资源上的盲检测接收获得SS,并获得测量结果。
PBCH由基站发送,携带基站的系统广播信息,类似于SS发送,具有系统定义的发送规则和发送资源集合,因此第一节点可以在相应的资源集合上盲检测接收一个或多个第二节点的PBCH,其中包含PBCH解调导频,第一节点可以根据PBCH解调导频对PBCH进行接收测量,获得测量结果。
CSI-RS的发送资源可配置,则第一节点需要获得相应的CSI-RS的配置信息后,根据配置信息中指示的资源及相关参数对第二节点的CSI-RS进行接收检测,并获得测量结果。
进一步的,第一节点根据对一个或多个相邻节点的测量,获得与各个相邻节点间的回 程链路的链路质量测量结果,并根据测量结果选择父节点,并尝试与所选择的父节点建立回程链路连接。优选的,一种选择策略为,选择相应回程链路信号质量高的第二节点作为自己的父节点。
进一步的,当第一节点与所选择的父节点建立回程链路失败,则第一节点可以重新进行与一个或多个第二节点间的无线链路测量,并选择父节点;或者第一节点可以直接使用上述测量结果,选择另一个第二节点作为父节点,并尝试与所选择的父节点进行回程链路连接。
方法一的实例一
第一节点为新部署的基站,在第一节点开机启动后,需要搜索发现相邻节点,并从中选择父节点建立回程链路连接,实现与核心网的信息交互。以方法一中检测SS为例说明。
图5是根据本申请实施例方法一的实例一的基站测量链路质量并选择父节点的方法流程图,如图5所示,第一节点测量并选择父节点的流程如下:
步骤1:第一节点盲检测周围是否存在第二节点发送的同步信号SS;
步骤2:第一节点检测到n个第二节点的SS,并对n个第二节点的SS信号进行测量;
步骤3:基于步骤2的测量,第一节点获得与相应n个第二节点之间各个回程链路的链路质量测量结果;
步骤4:第一节点根据步骤3的测量结果,选择一个第二节点作为父节点;
步骤5:第一节点与所选择的父节点建立回程链路连接。
其中,步骤4中第一节点选择父节点时,选择测量结果中无线链路质量最优的节点作为父节点。
步骤5中,第一节点也可以作为一个UE,向所选择的父节点发起随机接入过程,实现与父节点的连接。此时,也可以称第一节点与父节点建立了Access link连接。
方法二
第一节点接收相邻节点的第一类指示信息,并根据第一类指示信息中的配置指示,按照一定的父节点选择策略选择最优父节点,并进一步与所选择的父节点建立连接。
图6是根据本申请实施例方法二的第一节点选择父节点的流程示意图,如图6所示,第一节点选择父节点的过程包括:
步骤1:第一节点检测接收第二节点的广播消息;
步骤2:第一节点检测到n个第二节点的广播消息,分别从中获得各个第二节点的第一类指示信息;
步骤3:第一节点根据获得的n个第二节点的第一类指示信息,根据父节点选择策略,选择一个第二节点作为父节点;
步骤4:第一节点与所选择的父节点建立回程链路连接;
其中,第一类指示信息在第二节点的广播消息中发送,包含与回程链路相关的指示信息,至少包括以下任意一项:
第二节点的标识信息gNB ID;
第二节点作为管理节点的标识信息;
第二节点直接或间接连接的第一类节点的标识信息;
第二节点的跳数/层级;
第二节点的CSI-RS配置;
第二节点的回程链路负载量;
第二节点的回程链路资源配置;
其他第二节点的相关信息:
其中,第二节点的标识信息是指此基站自身的标识信息,例如第二节点的ID,cell ID等。第一节点可以通过第二节点的标识信息识别第二节点,并区分多个第二节点。
当第二节点是管理节点时,第二节点在第一类指示信息中指示其作为管理节点的标识信息。管理节点是指此第二节点具有管理相邻其他节点的功能及权限,周围相邻节点需要根据管理节点的配置指示进行回程链路连接或通信。在第一节点选择父节点时,若第二节点是管理节点,则此第二节点具有更高的优选级被选作父节点。
当第二节点为第二类节点时,第二节点可以指示与其直接或间接连接的第一类节点的标识信息,即根节点信息,例如指示相应第一类节点的gNB ID,cell ID等。当第二节点本身即为第一类节点时,第二节点可以指示其作为第一类节点的标识信息。第一节点可以通过识别第二节点相应的第一类节点,作为父节点选择时的参考,从而选择相应的第一类节点作为接入核心网的根节点。
第二节点可以指示自己在回程链路网络中的拓扑距离,拓扑距离是指节点在回程链路拓扑结构中与核心网之间的逻辑距离,可以定义为:
节点与所述核心网网元之间的连接中,经过的链路的数量,其中,所述经过的链路包括回程链路和所述第一类节点与核心网网元之间的链路;或者,节点与所述核心网网元之间的连接中,经过的回程链路的数量;或者,节点与所述核心网网元之间的连接中,经过的节点的数量,其中,所述经过的节点包括第一类节点和第二类节点;或者,定义为层级或者跳数,所述层级或跳数是指第二节点到相应的第一类节点之间经过的回程链路的数量。例如图4所示的回程链路结构中,node D是一个第二类节点,经过第一类节点node A/node C连接至核心网,则node A/node C称为第一跳节点,或者第一层级节点,相应的node D称为第二跳节点,或者第二层级节点。类似的,node E可称为第三跳节点,或第三层级节点。第二节点在回程链路中的跳数或层级即指此节点在回程链路中的层次位置,体现了此节点到核心网需要经过的回程链路的数量。根据第二节点的层级或跳数,第一节点可以确定第二节点在回程链路结构中的位置,作为选择父节点的依据。例如,层级或跳数越小的第二节点,作为父节点的优先级更高。
第二节点还可以在第一类指示信息中指示自身的CSI-RS配置,示例性的包括CSI-RS的周期,资源,所使用的序列,天线相关配置等。第一节点根据第二节点的CSI-RS配置,可以接收检测第二节点的CSI-RS信号,从而实现对与第二节点之间无线链路的更准确的测量,并将测量结果用于父节点选择的判决。
第二节点的回程链路负载量,可以通过下述任意一种或多种方式体现:第二节点当前保持连接的回程链路数量;第二节点当前连接的子节点数量;第二节点当前连接的父节点数量;第二节点的回程链路资源配置,例如第二节点的回程链路时域和/或频域资源配置,或者第二节点的回程链路时域和/或频域资源配置与接入链路的时域和/或频域资源配置的比例,或者第二节点的回程链路时域和/或频域资源配置在总资源量中的比例;第二节点的回程链路最大可用资源量,或者最大可用资源比例。通过第二节点的回程链路负载量,第一节点可以判断第二节点作为父节点可以提供的回程链路通信的容量,作为选择父节点的依据。
第二节点的回程链路资源配置是指在第二节点所有可用的时域和频域资源中,用于回程链路的资源配置,例如,包括第二节点的回程链路时域资源和/或频域资源配置。通过第二节点的回程链路资源配置,第一节点可以判断第二节点作为父节点可以提供的回程链路通信的容量,作为选择父节点的依据。
其他相邻节点的相关信息是指第二节点可以在自身的第一类指示信息中指示周围其他节点的相应第一类指示信息,即转发其他相邻节点作为第二节点的上述信息。第二节点指示其他相邻节点的相关信息,有利于第一节点获得更多的相邻节点的信息,从而为父节点选择提供更多判决依据。
第一节点从第二节点接收第一类指示信息,从中获得上述信息中的任意一项或多项,进一步的根据一定的父节点选择策略,选择一个相邻节点作为父节点,并尝试与所选择的父节点建立回程链路连接。
其中,父节点选择策略可以由系统预定义,网络侧预配置,或者为基站实现方法。父节点选择策略可以结合上述信息中获得的任意一项或多项,作为选择判决的依据。
类似的,当第一节点与所选择的父节点建立回程链路失败,则第一节点可以重新运行父节点选择策略,重新选择另一个相邻节点作为父节点,并尝试与所选择的父节点进行回程链路连接。
方法二的实例二
第一节点接收周围相邻节点的系统广播消息,从中获得第一类指示信息,其中包含第二节点的回程链路跳数的指示。第一节点根据周围多个第二节点的跳数,选择跳数最少的第二节点作为父节点,并与父节点建立回程链路连接,实现与核心网的信息交互。
图7是根据本申请实施例方法二的实例二的基站选择父节点的架构图,如图7所示,node B为第一节点,要选择一个父节点实现与核心网的连接。Node B通过检测,分别获 得了相邻的第二节点node A与node C的第一类指示信息。其中,node A的第一类指示信息中指示,node A是第一跳节点,或指示node A的拓扑距离为1,即具有与核心网的直接连接,node C的第一类指示信息中指示,node C是第二跳节点,或指示node C的拓扑距离为2,即需要通过某个第一类节点的间接连接,与核心网连接。第一节点根据系统预定义的父节点选择策略,选择跳数更少的节点,或拓扑距离更小的节点作为父节点,即选择node A为父节点。
进一步的,node B向node A发起连接建立请求,与node A建立回程链路连接。或者,node B执行随机接入过程,与父节点建立Access link连接。
方法二的实例三
第一节点接收周围相邻节点的系统广播消息,从中获得第一类指示信息,其中包含第二节点的标识信息。第一节点根据周围多个第二节点的标识信息,选择标识为管理节点的第二节点作为父节点,并与父节点建立回程链路连接,实现与核心网的信息交互。
图8是根据本申请实施例方法二的实例三的第一节点选择父节点的架构图,如图8所示,node E为第一节点,要选择一个父节点实现与核心网的连接。Node E通过检测,分别获得了相邻节点node B与node D的第一类指示信息。其中,node D的第一类指示信息中指示,node D是回程链路管理节点,具有对回程链路的管理功能。第一节点根据系统预定义的父节点选择策略,选择管理节点作为父节点,即选择node D为父节点。
进一步的,node E向node D发起连接建立请求,与node D建立回程链路连接。
方法二的实例四
第一节点接收周围第二节点的系统广播消息,从中获得第一类指示信息,其中包含第二节点的CSI-RS配置信息。进一步的,第一节点检测接收各个第二节点的CSI-RS,根据CSI-RS的测量结果,选择与第一节点之间的无线链路质量更高的第二节点作为父节点,并与父节点建立回程链路连接,实现与核心网的信息交互。
图9是根据本申请实施例方法二的实例四的第一节点选择父节点的架构图,如图9所示,node E为第一节点,要选择一个父节点实现与核心网的连接。Node E通过检测,分别获得了相邻节点node A,node B与node D的第一类指示信息。其中,各个第二节点指示了各自的CSI-RS配置。第一节点根据所指示的CSI-RS配置,分别接收各个第二节点的CSI-RS信号,测量与node A,node B,node D之间的无线链路质量。第一节点的测量结果为,与node D之间的无线链路条件最优,则第一节点选择信道条件最优的节点作为父节点,即选择node D为父节点。
进一步的,node E向node D发起连接建立请求,与node D建立回程链路连接。
方法三
第一节点接收管理节点的第二类指示信息,其中指示了管理节点为第一节点配置的父节点信息,或者指示配置的第一类节点信息,进一步,第一节点与所配置的父节点建立连接,或者根据所指示的第一类节点,确定父节点,并与确定的父节点建立连接。
图10是根据本申请实施例方法三的第一节点确定父节点的方法流程图一,如图10所示,第一节点确定父节点的过程包括:
步骤1:第一节点接收第二类指示信息,该第二类指示信息由管理节点发送;
步骤2:第一节点从第二类指示信息中获得所配置的父节点的标识信息;
步骤3:第一节点与所配置的父节点建立回程链路连接。
图11是根据本申请实施例方法三的第一节点确定父节点的方法流程图二,如图11所示,第一节点确定父节点的过程包括:
步骤1:第一节点接收管理节点的第二类指示信息;
步骤2:第一节点从第二类指示信息中获得管理节点配置指示的第一类节点的标识信息;
步骤3:第一节点根据指示的第一类节点,确定父节点;
步骤4:第一节点与所确定的父节点建立回程链路连接。
其中,第二类指示信息由管理节点通过高层信令指示给第一节点,例如使用无线资源控制RRC(Radio Resource Control)信令指示。
第二类指示信息中包含为第一节点配置的父节点的标识信息,如所配置的父节点的gNB ID,cell ID等。基于此标识信息,第一节点可以唯一确定所配置的父节点。或者,第二类指示信息中包含为第一节点配置的第一类节点的标识信息,如所配置的第一类节点的gNB ID,cell ID等。基于此标识信息,第一节点可以唯一确定所配置的第一类节点。
进一步的,第一节点与所配置的父节点建立回程链路连接,可以通过随机接入向父节点发起连接,或者根据管理节点的配置,采用非竞争性随机接入向父节点发起连接,或者通过切换过程实现与父节点的连接。
进一步的,此方法还可以用于管理节点配置调整第一节点的父节点。示例性的,当前节点已有相应的父节点,并与父节点建立了回程链路连接,管理节点可以为第一节点重配置另一个基站作为第一节点的父节点,并指示第一节点重配置的父节点标识,并指示第一节点与重配置的父节点建立连接。进一步的,管理节点还可以指示第一节点中断与之前父节点的连接。
方法三的实例五
第一节点与管理节点存在回程链路连接,管理节点控制管理第一节点的回程链路连接及通信,包括为第一节点配置或重配置父节点。
图12是根据本申请实施例方法三的实例五的第一节点选择父节点的架构图,如图12所示,node E为第一节点,node A为管理节点,node E根据node A的配置指示确定父节 点。Node A首先通过RRC消息为node E指示node B为父节点,则node E根据node A指示的第二类指示信息,与node B建立回程链路连接,并与核心网进行数据交互。
由于回程链路整体负载的变化,node B作为node E的父节点能够提供的服务不能满足node E的需求,则由node E请求,或管理节点的控制,node A向node E指示更新的第二类指示信息,为node E重配置node D为父节点。Node E根据指示信息,建立与node D的连接,并中断与原父节点node B的连接。
通过管理节点控制配置第一节点的父节点选择,可以由集中的管理节点统一协调回程链路的连接关系,进而管理回程链路的负载分担和资源配置,达到更高的资源利用率,以及系统性能。
方法三的实例六
第一节点与管理节点存在回程链路连接,管理节点控制管理第一节点的回程链路连接及通信,包括为第一节点配置相应的第一类节点。
以图4所示的拓扑结构为例说明本申请的方法三的另一种实现。如图4所示,node E为第一节点,node D为管理节点,node E根据node D的配置指示确定父节点。
Node D通过RRC消息为node E指示相应的第一类节点为node A,则node E应选择以node A为根节点的路径,与核心网建立连接。Node E根据配置指示,首先,在相邻节点中搜索是否可以直接连接到node A。如果node E与node A为相邻节点,则node E直接建立与node A的连接;当node E无法直接接收node A的信号,则node E在相邻的第二类节点搜索,确定node B连接的第一类节点为node A,则node E确定node B为父节点,与node B建立回程链路连接,从而间接连接到node A。进一步的,node E通过父节点与核心网进行数据交互。
方法四
第一节点根据预配置,确定父节点,并进一步与预配置的父节点建立连接。
由于基站属于网络侧节点,由运营商统一管理部署,则基站本身可以被预配置,包括为第一节点预配置相应的父节点或相应的第一类节点。这里,预配置可以由网络侧通过OAM下发配置信息,或者基站本身携带的预配置信息中写入。通过为第一节点预配置父节点,可以更快速的实现第一节点与父节点的连接建立,避免第一节点选择父节点的过程需要的时延,同时有利于回程链路的统一控制管理。或者当预配置相应的第一类节点时,第一节点需在相邻节点中,搜索所配置的第一类节点,作为自己的父节点;或者,第一节点选择与所配置的第一类节点有直接或间接回程链路连接的第二节点作为父节点,通过与父节点的回程链路连接,间接连接到所配置的第一类节点,并实现与核心网的连接。
方法四的实例七
第一节点在网络部署时被写入预配置信息,这里写入预配置信息是指在第一节点的软 件存储器中写入与第一节点运行相关的配置信息,包括父节点标识信息。
第一节点上电运行后,读取本身存储器中的预配置信息,获得父节点标识信息。进一步的,第一节点根据预配置的父节点信息,在相邻小区中搜索所配置的父节点。第一节点通过检测接收相邻节点的广播消息,其中标识了各个相邻节点的标识信息,则第一节点可以判定其中是否有所配置的父节点。当第一节点在相邻节点中检测到所配置父节点时,向父节点发起连接建立,与父节点建立回程链路连接。当第一节点在相邻节点中未检测到预配置的父节点时,则第一节点可以采用上述方法一至方法三中的任意一种方式,确定父节点,并建立回程链路连接,实现到核心网的通信。
通过本申请实施例,采用第一节点通过测量和/或根据配置指示确定父节点的方法,确定父节点并与之建立无线链路连接,并通过父节点的中继转发,实现至核心网的通信。解决了在5G通信系统中,基站无法有效确定回程链路父节点的问题。通过基站的测量或邻近节点的信息指示,确定回程链路父节点,并与父节点建立回程链路连接。通过此方法可以实现基站间回程链路的建立,达到灵活高效的回程链路组织,有利于提高资源利用率,满足UE业务需求。
通过以上的实施方式的描述,本领域的技术人员可以清楚地了解到根据上述实施例的方法可借助软件加必需的通用硬件平台的方式来实现,当然也可以通过硬件,但很多情况下前者是更佳的实施方式。基于这样的理解,本申请的技术方案本质上或者说对现有技术做出贡献的部分可以以软件产品的形式体现出来,该计算机软件产品存储在一个存储介质(如ROM/RAM、磁碟、光盘)中,包括若干指令用以使得一台终端设备(可以是手机,计算机,服务器,或者网络设备等)执行本申请各个实施例所述的方法。
实施例二
在本实施例中还提供了一种确定父节点的装置,该装置用于实现上述实施例及优选实施方式,已经进行过说明的不再赘述。如以下所使用的,术语“模块”可以实现预定功能的软件和/或硬件的组合。尽管以下实施例所描述的装置较佳地以软件来实现,但是硬件,或者软件和硬件的组合的实现也是可能并被构想的。
根据本申请的一个实施例,提供了一种确定父节点的装置,应用于第一节点,包括:
第一获取模块,用于获得父节点参考信息,其中,所述父节点参考信息包括以下至少之一:
所述第一节点与第二节点之间的无线链路的信号质量信息;
所述第二节点广播的第一类指示信息;
管理节点发送的第二类指示信息;
预配置信息;
第一确定模块,连接至所述第一获取模块,用于根据所述父节点参考信息确定父节点;
连接模块,连接至所述第一确定模块,用于与所述父节点建立回程链路连接。
采用上述技术方案,第一获取模块用于获得父节点参考信息,其中,所述父节点参考 信息包括以下至少之一:所述第一节点与第二节点之间的无线链路的信号质量信息;所述第二节点广播的第一类指示信息;管理节点发送的第二类指示信息;预配置信息;第一确定模块用于根据所述父节点参考信息确定父节点。采用上述技术方案,至少给出了四种确定父节点的方案,解决了相关技术中缺乏适用于新系统的基站之间建立回程链路的方案的问题,采用确定父节点建立回程链路,便于基站或节点之间进行数据传输。
可选地,所述第一获取模块还包括以下至少之一:
第一测量单元,用于测量与一个或多个所述第二节点之间的无线链路的信号质量,获得所述第一节点与一个或多个所述第二节点之间的无线链路的信号质量信息;
第一接收单元,用于接收一个或多个所述第二节点发送的广播信息,其中包括所述第一类指示信息;
第二接收单元,用于接收所述管理节点发送的所述第二类指示信息,其中所述第二类指示信息包含有所述管理节点为所述第一节点配置的父节点的标识信息,和/或,所述管理节点为所述第一节点配置的第一类节点的标识信息;
第一确定单元,用于确定所述预配置信息,其中,所述预配置信息由网络侧配置指示或者由所述第一节点预配置,其中,所述预配置信息包含为所述第一节点预配置的父节点的标识信息,和/或为所述第一节点预配置的第一类节点的标识信息;
其中,所述第一类节点是指与核心网网元有直接连接的节点。
可选地,所述第一确定模块还用于以下至少之一:
用于依据所述第一节点与一个或多个所述第二节点之间的无线链路的信号质量信息,从中选择一个所述第二节点作为所述第一节点的父节点;
用于依据一个或多个所述第二节点的所述第一类指示信息,从中选择一个所述第二节点作为父节点;
用于依据所述第二类指示信息中指示的父节点标识信息,确定所配置的父节点;
用于依据所述第二类指示信息中指示的第一类节点标识信息,确定所配置的父节点;
用于依据所述预配置信息中指示的父节点标识信息,确定所配置的父节点;
用于依据所述预配置信息中指示的第一类节点标识信息,确定所配置的父节点。
可选地,所述第一测量单元还用于通过测量所述第二节点发送的以下信号至少之一,获得所述第一节点与所述第二节点之间的无线链路的信号质量信息:
系统同步信号SS;
系统广播信号PBCH;
信道状态测量参考信号CSI-RS。
可选地,所述第二节点广播的第一类指示信息中,包括以下信息至少之一:
所述第二节点的第一标识信息,所述第一标识信息为所述第二节点在网络中的唯一身份标识信息;
所述第二节点的第二标识信息,所述第二标识信息用于标识所述第二节点为管理节点;
所述第二节点的第三标识信息,所述第三标识信息用于标识所述第二节点相关的第一类节点的标识信息;
所述第二节点与所述核心网网元之间拓扑距离;
所述第二节点的信道状态信息参考信号CSI-RS的配置信息;
所述第二节点的回程链路负载量,其中,所述回程链路负载量包括所述第二节点所连接的一条或多条回程链路的负载量;
所述第二节点的回程链路资源配置信息,其中,所述回程链路资源配置包括所述第二节点所连接的一条或多条回程链路的资源配置信息;
所述第二节点的一个或多个相邻节点的所述第一类指示信息。
可选地,所述第三标识信息用于标识所述第二节点相关的第一类节点的标识信息,包括以下之一:
所述第二节点为第二类节点时,所述第二节点相关的第一类节点是指所述第二节点通过回程链路直接或间接连接的第一类节点,其中,所述第二类节点是指与核心网网元没有直接连接的节点;
所述第二节点为第一类节点时,所述第二节点相关的第一类节点是指所述第二节点自身。
可选地,所述第二节点与核心网网元之间拓扑距离,包括以下之一:
所述拓扑距离是指所述第二节点与所述核心网网元之间的连接中,经过的链路的数量,其中,所述经过的链路包括回程链路和所述第一类节点与核心网网元之间的链路;
所述拓扑距离是指所述第二节点与所述核心网网元之间的连接中,经过的回程链路的数量;
所述拓扑距离是指所述第二节点与所述核心网网元之间的连接中,经过的节点的数量,其中,所述经过的节点包括第一类节点和第二类节点,其中,所述第二类节点是指与核心网网元没有直接连接的节点。
可选地,所述第二节点的信道状态信息参考信号CSI-RS的配置信息,包括以下至少之一:
所述CSI-RS的周期,所述CSI-RS使用的资源,所述CSI-RS使用的序列,所述CSI-RS使用的天线配置信息。
可选地,所述第二节点的回程链路负载量,包括以下至少之一:
所述第二节点当前保持连接的回程链路数量;
所述第二节点当前连接的子节点的数量,其中,所述子节点通过所述第二节点连接至所述核心网网元;
所述第二节点当前连接的父节点的数量。
可选地,所述第二节点的回程链路资源配置信息,包括以下至少之一:
所述第二节点的回程链路的时域和/或频域资源配置信息;
所述第二节点的回程链路的资源量与所述第二节点与用户设备之间的接入链路的资源量的比例;
所述第二节点的回程链路资源量在所述第二节点的总资源量中的占比,其中,所述总资源量包括所述第二节点在回程链路和接入链路的可用资源总量;
所述第二节点的回程链路最大可用的资源量;
所述第二节点的回程链路最大可用资源的比例,其中,所述资源的比例是指所述第二节点的回程链路的资源量与接入链路的资源量的比例,或者是指所述第二节点的回程链路资源量在所述第二节点的总资源量中的占比。
可选地,所述第一确定还用于以下至少之一:
用于当所述第二节点的第一标识信息与所述第二类指示信息中指示的父节点标识信息,或者与所述预配置信息中指示的父节点标识信息相同时,确定所述第二节点为所述第一节点的父节点;
用于当所述第二节点的第二标识指示所述第二节点为管理节点时,确定所述第二节点为所述第一节点的父节点;
用于当所述第二节点的第三标识指示的所述第一类节点的标识信息,与所述第二类指示信息中指示的第一类节点标识信息相同,或者与所述预配置信息中指示的第一类节点标识信息相同时,确定所述第二节点为所述第一节点的父节点;
用于根据所述第二节点的拓扑距离,确定拓扑距离最小的所述第二节点为所述第一节点的父节点;
用于根据所述第二节点的CSI-RS配置信息,检测所述第二节点的CSI-RS信号,获得检测结果,确定检测结果最优的所述第二节点为所述第一节点的父节点;
用于根据所述第二节点的回程链路负载量,确定回程链路负载量最优的所述第二节点为所述第一节点的父节点;
用于根据所述第二节点的回程链路资源配置信息,确定回程链路资源配置最优的所述第二节点为所述第一节点的父节点。
可选地,所述第二接收单元还用于接收所述管理节点发送的切换指示,所述第一确定模块还用于中断与所述管理节点的回程链路连接,并根据所述第二类指示信息中的指示,确定父节点,所述连接模块还用于与所确定的父节点建立回程链路连接。
需要说明的是,上述各个模块是可以通过软件或硬件来实现的,对于后者,可以通过以下方式实现,但不限于此:上述模块均位于同一处理器中;或者,上述各个模块以任意组合的形式分别位于不同的处理器中。
实施例三
根据本申请的又一个实施例,还提供了一种存储介质,所述存储介质中存储有计算机程序,其中,所述计算机程序被设置为运行时执行上述任一项方法实施例中的步骤。
实施例四
根据本申请的又一个实施例,还提供了一种电子装置,包括存储器和处理器,所述存储器中存储有计算机程序,所述处理器被设置为运行所述计算机程序以执行上述任一项方法实施例中的步骤。
显然,本领域的技术人员应该明白,上述的本申请的各模块或各步骤可以用通用的计算装置来实现,它们可以集中在单个的计算装置上,或者分布在多个计算装置所组成的网络上,可选地,它们可以用计算装置可执行的程序代码来实现,从而,可以将它们存储在存储装置中由计算装置来执行,并且在某些情况下,可以以不同于此处的顺序执行所示出或描述的步骤,或者将它们分别制作成各个集成电路模块,或者将它们中的多个模块或步骤制作成单个集成电路模块来实现。这样,本申请不限制于任何特定的硬件和软件结合。
以上所述仅为本申请的优选实施例而已,并不用于限制本申请,对于本领域的技术人员来说,本申请可以有各种更改和变化。凡在本申请的精神和原则之内,所作的任何修改、等同替换、改进等,均应包含在本申请的保护范围之内。

Claims (26)

  1. 一种确定父节点的方法,包括:
    第一节点获得父节点参考信息,其中,所述父节点参考信息包括以下至少之一:
    所述第一节点与第二节点之间的无线链路的信号质量信息;
    所述第二节点广播的第一类指示信息;
    管理节点发送的第二类指示信息;
    预配置信息;
    所述第一节点根据所述父节点参考信息确定父节点,并与所述父节点建立回程链路连接。
  2. 根据权利要求1所述的方法,其中,所述第一节点获得所述父节点参考信息,包括以下至少之一:
    所述第一节点测量与一个或多个所述第二节点之间的无线链路的信号质量,获得所述第一节点与一个或多个所述第二节点之间的无线链路的信号质量信息;
    所述第一节点接收一个或多个所述第二节点发送的广播信息,其中包括所述第一类指示信息;
    所述第一节点接收所述管理节点发送的所述第二类指示信息,其中所述第二类指示信息包含有所述管理节点为所述第一节点配置的父节点的标识信息,和/或,所述管理节点为所述第一节点配置的第一类节点的标识信息;
    所述第一节点确定所述预配置信息,其中,所述预配置信息由网络侧配置指示或者由所述第一节点预配置,其中,所述预配置信息包含为所述第一节点预配置的父节点的标识信息,和/或为所述第一节点预配置的第一类节点的标识信息;
    其中,所述第一类节点是指与核心网网元有直接连接的节点。
  3. 根据权利要求1或2所述的方法,其中,所述第一节点根据所述父节点参考信息确定父节点,包括以下至少之一:
    所述第一节点依据所述第一节点与一个或多个所述第二节点之间的无线链路的信号质量信息,从中选择一个所述第二节点作为所述第一节点的父节点;
    所述第一节点依据一个或多个所述第二节点的所述第一类指示信息,从中选择一个所述第二节点作为父节点;
    所述第一节点依据所述第二类指示信息中指示的父节点标识信息,确定所配置的父节点;
    所述第一节点依据所述第二类指示信息中指示的第一类节点标识信息,确定所配置的父节点;
    所述第一节点依据所述预配置信息中指示的父节点标识信息,确定所配置的父节点;
    所述第一节点依据所述预配置信息中指示的第一类节点标识信息,确定所配置的父节点。
  4. 根据权利要求2所述的方法,其中,所述第一节点测量与所述第二节点之间的无线链路的信号质量,包括:
    通过测量所述第二节点发送的以下信号至少之一,获得所述第一节点与所述第二节点之间的无线链路的信号质量信息:
    系统同步信号SS;
    系统广播信号PBCH;
    信道状态测量参考信号CSI-RS。
  5. 根据权利要求2所述的方法,其中,所述第二节点广播的第一类指示信息中,包括以下信息至少之一:
    所述第二节点的第一标识信息,所述第一标识信息为所述第二节点在网络中的唯一身份标识信息;
    所述第二节点的第二标识信息,所述第二标识信息用于标识所述第二节点为管理节点;
    所述第二节点的第三标识信息,所述第三标识信息用于标识所述第二节点相关的第一类节点的标识信息;
    所述第二节点与所述核心网网元之间拓扑距离;
    所述第二节点的信道状态信息参考信号CSI-RS的配置信息;
    所述第二节点的回程链路负载量,其中,所述回程链路负载量包括所述第二节点所连接的一条或多条回程链路的负载量;
    所述第二节点的回程链路资源配置信息,其中,所述回程链路资源配置包括所述第二节点所连接的一条或多条回程链路的资源配置信息;
    所述第二节点的一个或多个相邻节点的所述第一类指示信息。
  6. 根据权利要求5所述的方法,其中,所述第三标识信息用于标识所述第二节点相关的第一类节点的标识信息,包括以下之一:
    所述第二节点为第二类节点时,所述第二节点相关的第一类节点是指所述第二节点通过回程链路直接或间接连接的第一类节点,其中,所述第二类节点是指与核心网网元没有直接连接的节点;
    所述第二节点为第一类节点时,所述第二节点相关的第一类节点是指所述第二节点自身。
  7. 根据权利要求5所述的方法,其中,所述第二节点与核心网网元之间拓扑距离,包括以下之一:
    所述拓扑距离是指所述第二节点与所述核心网网元之间的连接中,经过的链路的数量,其中,所述经过的链路包括回程链路和所述第一类节点与核心网网元之间的链路;
    所述拓扑距离是指所述第二节点与所述核心网网元之间的连接中,经过的回程链路的数量;
    所述拓扑距离是指所述第二节点与所述核心网网元之间的连接中,经过的节点的数量, 其中,所述经过的节点包括第一类节点和第二类节点,其中,所述第二类节点是指与核心网网元没有直接连接的节点。
  8. 根据权利要求5所述的方法,其中,所述第二节点的信道状态信息参考信号CSI-RS的配置信息,包括以下至少之一:
    所述CSI-RS的周期,所述CSI-RS使用的资源,所述CSI-RS使用的序列,所述CSI-RS使用的天线配置信息。
  9. 根据权利要求5所述的方法,其中,所述第二节点的回程链路负载量,包括以下至少之一:
    所述第二节点当前保持连接的回程链路数量;
    所述第二节点当前连接的子节点的数量,其中,所述子节点通过所述第二节点连接至所述核心网网元;
    所述第二节点当前连接的父节点的数量。
  10. 根据权利要求5所述的方法,其中,所述第二节点的回程链路资源配置信息,包括以下至少之一:
    所述第二节点的回程链路的时域和/或频域资源配置信息;
    所述第二节点的回程链路的资源量与所述第二节点与用户设备之间的接入链路的资源量的比例;
    所述第二节点的回程链路资源量在所述第二节点的总资源量中的占比,其中,所述总资源量包括所述第二节点在回程链路和接入链路的可用资源总量;
    所述第二节点的回程链路最大可用的资源量;
    所述第二节点的回程链路最大可用资源的比例,其中,所述资源的比例是指所述第二节点的回程链路的资源量与接入链路的资源量的比例,或者是指所述第二节点的回程链路资源量在所述第二节点的总资源量中的占比。
  11. 根据权利要求3所述的方法,其中,所述第一节点根据所述父节点参考信息确定父节点,包括以下至少之一:
    所述第一节点从第一类指示信息中获得所述第二节点的第一标识信息,当所述第二节点的第一标识信息与所述第二类指示信息中指示的父节点标识信息,或者与所述预配置信息中指示的父节点标识信息相同时,所述第一节点确定所述第二节点为所述第一节点的父节点;
    所述第一节点从第一类指示信息中获得所述第二节点的第二标识信息,当所述第二节点的第二标识指示所述第二节点为管理节点时,所述第一节点确定所述第二节点为所述第一节点的父节点;
    所述第一节点从第一类指示信息中获得所述第二节点的第三标识信息,当所述第二节点的第三标识指示的所述第一类节点的标识信息,与所述第二类指示信息中指示的第一类节点标识信息相同,或者与所述预配置信息中指示的第一类节点标识信息相同时,所述第 一节点确定所述第二节点为所述第一节点的父节点;
    所述第一节点从第一类指示信息中获得所述第二节点的拓扑距离,所述第一节点选择拓扑距离最小的所述第二节点为所述第一节点的父节点;
    所述第一节点从第一类指示信息中获得所述第二节点的CSI-RS配置信息,检测所述第二节点的CSI-RS信号,获得检测结果,所述第一节点选择检测结果最优的所述第二节点为所述第一节点的父节点;
    所述第一节点从第一类指示信息中获得所述第二节点的回程链路负载量,所述第一节点选择回程链路负载量最优的所述第二节点为所述第一节点的父节点;
    所述第一节点从第一类指示信息中获得所述第二节点的回程链路资源配置信息,所述第一节点选择回程链路资源配置最优的所述第二节点为所述第一节点的父节点。
  12. 根据权利要求2所述的方法,其中,所述第一节点接收所述管理节点发送的所述第二类指示信息,包括:
    接收所述管理节点发送的切换指示,中断与所述管理节点的回程链路连接,并根据所述第二类指示信息中的指示,确定父节点,与所确定的父节点建立回程链路连接。
  13. 一种确定父节点的装置,应用于第一节点,包括:
    第一获取模块,用于获得父节点参考信息,其中,所述父节点参考信息包括以下至少之一:
    所述第一节点与第二节点之间的无线链路的信号质量信息;
    所述第二节点广播的第一类指示信息;
    管理节点发送的第二类指示信息;
    预配置信息;
    第一确定模块,用于根据所述父节点参考信息确定父节点;
    连接模块,用于与所述父节点建立回程链路连接。
  14. 根据权利要求13所述的装置,其中,所述第一获取模块还包括以下至少之一:
    第一测量单元,用于测量与一个或多个所述第二节点之间的无线链路的信号质量,获得所述第一节点与一个或多个所述第二节点之间的无线链路的信号质量信息;
    第一接收单元,用于接收一个或多个所述第二节点发送的广播信息,其中包括所述第一类指示信息;
    第二接收单元,用于接收所述管理节点发送的所述第二类指示信息,其中所述第二类指示信息包含有所述管理节点为所述第一节点配置的父节点的标识信息,和/或,所述管理节点为所述第一节点配置的第一类节点的标识信息;
    第一确定单元,用于确定所述预配置信息,其中,所述预配置信息由网络侧配置指示或者由所述第一节点预配置,其中,所述预配置信息包含为所述第一节点预配置的父节点的标识信息,和/或为所述第一节点预配置的第一类节点的标识信息;
    其中,所述第一类节点是指与核心网网元有直接连接的节点。
  15. 根据权利要求13或14所述的装置,其中,所述第一确定模块还用于以下至少之一:
    用于依据所述第一节点与一个或多个所述第二节点之间的无线链路的信号质量信息,从中选择一个所述第二节点作为所述第一节点的父节点;
    用于依据一个或多个所述第二节点的所述第一类指示信息,从中选择一个所述第二节点作为父节点;
    用于依据所述第二类指示信息中指示的父节点标识信息,确定所配置的父节点;
    用于依据所述第二类指示信息中指示的第一类节点标识信息,确定所配置的父节点;
    用于依据所述预配置信息中指示的父节点标识信息,确定所配置的父节点;
    用于依据所述预配置信息中指示的第一类节点标识信息,确定所配置的父节点。
  16. 根据权利要求14所述的装置,其中,所述第一测量单元还用于通过测量所述第二节点发送的以下信号至少之一,获得所述第一节点与所述第二节点之间的无线链路的信号质量信息:
    系统同步信号SS;
    系统广播信号PBCH;
    信道状态测量参考信号CSI-RS。
  17. 根据权利要求14所述的装置,其中,所述第二节点广播的第一类指示信息中,包括以下信息至少之一:
    所述第二节点的第一标识信息,所述第一标识信息为所述第二节点在网络中的唯一身份标识信息;
    所述第二节点的第二标识信息,所述第二标识信息用于标识所述第二节点为管理节点;
    所述第二节点的第三标识信息,所述第三标识信息用于标识所述第二节点相关的第一类节点的标识信息;
    所述第二节点与所述核心网网元之间拓扑距离;
    所述第二节点的信道状态信息参考信号CSI-RS的配置信息;
    所述第二节点的回程链路负载量,其中,所述回程链路负载量包括所述第二节点所连接的一条或多条回程链路的负载量;
    所述第二节点的回程链路资源配置信息,其中,所述回程链路资源配置包括所述第二节点所连接的一条或多条回程链路的资源配置信息;
    所述第二节点的一个或多个相邻节点的所述第一类指示信息。
  18. 根据权利要求17所述的装置,其中,所述第三标识信息用于标识所述第二节点相关的第一类节点的标识信息,包括以下之一:
    所述第二节点为第二类节点时,所述第二节点相关的第一类节点是指所述第二节点通过回程链路直接或间接连接的第一类节点,其中,所述第二类节点是指与核心网网元没有直接连接的节点;
    所述第二节点为第一类节点时,所述第二节点相关的第一类节点是指所述第二节点自身。
  19. 根据权利要求17所述的装置,其中,所述第二节点与核心网网元之间拓扑距离,包括以下之一:
    所述拓扑距离是指所述第二节点与所述核心网网元之间的连接中,经过的链路的数量,其中,所述经过的链路包括回程链路和所述第一类节点与核心网网元之间的链路;
    所述拓扑距离是指所述第二节点与所述核心网网元之间的连接中,经过的回程链路的数量;
    所述拓扑距离是指所述第二节点与所述核心网网元之间的连接中,经过的节点的数量,其中,所述经过的节点包括第一类节点和第二类节点,其中,所述第二类节点是指与核心网网元没有直接连接的节点。
  20. 根据权利要求17所述的装置,其中,所述第二节点的信道状态信息参考信号CSI-RS的配置信息,包括以下至少之一:
    所述CSI-RS的周期,所述CSI-RS使用的资源,所述CSI-RS使用的序列,所述CSI-RS使用的天线配置信息。
  21. 根据权利要求17所述的装置,其中,所述第二节点的回程链路负载量,包括以下至少之一:
    所述第二节点当前保持连接的回程链路数量;
    所述第二节点当前连接的子节点的数量,其中,所述子节点通过所述第二节点连接至所述核心网网元;
    所述第二节点当前连接的父节点的数量。
  22. 根据权利要求17所述的装置,其中,所述第二节点的回程链路资源配置信息,包括以下至少之一:
    所述第二节点的回程链路的时域和/或频域资源配置信息;
    所述第二节点的回程链路的资源量与所述第二节点与用户设备之间的接入链路的资源量的比例;
    所述第二节点的回程链路资源量在所述第二节点的总资源量中的占比,其中,所述总资源量包括所述第二节点在回程链路和接入链路的可用资源总量;
    所述第二节点的回程链路最大可用的资源量;
    所述第二节点的回程链路最大可用资源的比例,其中,所述资源的比例是指所述第二节点的回程链路的资源量与接入链路的资源量的比例,或者是指所述第二节点的回程链路资源量在所述第二节点的总资源量中的占比。
  23. 根据权利要求15所述的装置,其中,所述第一确定模块还用于以下至少之一:
    用于当所述第二节点的第一标识信息与所述第二类指示信息中指示的父节点标识信息,或者与所述预配置信息中指示的父节点标识信息相同时,确定所述第二节点为所述第 一节点的父节点;
    用于当所述第二节点的第二标识指示所述第二节点为管理节点时,确定所述第二节点为所述第一节点的父节点;
    用于当所述第二节点的第三标识指示的所述第一类节点的标识信息,与所述第二类指示信息中指示的第一类节点标识信息相同,或者与所述预配置信息中指示的第一类节点标识信息相同时,确定所述第二节点为所述第一节点的父节点;
    用于根据所述第二节点的拓扑距离,确定拓扑距离最小的所述第二节点为所述第一节点的父节点;
    用于根据所述第二节点的CSI-RS配置信息,检测所述第二节点的CSI-RS信号,获得检测结果,确定检测结果最优的所述第二节点为所述第一节点的父节点;
    用于根据所述第二节点的回程链路负载量,确定回程链路负载量最优的所述第二节点为所述第一节点的父节点;
    用于根据所述第二节点的回程链路资源配置信息,确定回程链路资源配置最优的所述第二节点为所述第一节点的父节点。
  24. 根据权利要求13或14所述的装置,其中,
    所述第二接收单元还用于接收所述管理节点发送的切换指示;
    所述第一确定模块还用于中断与所述管理节点的回程链路连接,并根据所述第二类指示信息中的指示,确定父节点;
    所述连接模块还用于与所确定的父节点建立回程链路连接。
  25. 一种存储介质,所述存储介质中存储有计算机程序,其中,所述计算机程序被设置为运行时执行所述权利要求1至12任一项中所述的方法。
  26. 一种电子装置,包括存储器和处理器,其中,所述存储器中存储有计算机程序,所述处理器被设置为运行所述计算机程序以执行所述权利要求1至12任一项中所述的方法。
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