WO2015131677A1 - 虚拟小区的构建、协作节点的选择方法及装置 - Google Patents

虚拟小区的构建、协作节点的选择方法及装置 Download PDF

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WO2015131677A1
WO2015131677A1 PCT/CN2015/070935 CN2015070935W WO2015131677A1 WO 2015131677 A1 WO2015131677 A1 WO 2015131677A1 CN 2015070935 W CN2015070935 W CN 2015070935W WO 2015131677 A1 WO2015131677 A1 WO 2015131677A1
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nodes
node
service
cooperative
srs
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PCT/CN2015/070935
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English (en)
French (fr)
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张芳
邹伟
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中兴通讯股份有限公司
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/24—Cell structures

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  • the present invention relates to the field of communications, and in particular to a method for constructing a virtual cell, a method for selecting a cooperative node, and a device.
  • Network virtualization technology is one of them.
  • VLAN Virtual LAN
  • SDN software-defined network
  • Wireless networks are more complex than wired networks, and need to consider channel uncertainty, interference, and signaling overhead.
  • RSRP Reference Signal Received Power
  • RSRQ Reference Signal Received Quality
  • nodes are faced with complex interference and diverse environments. This kind of distributed management relying solely on wireless signal strength as indicators can no longer be accommodated. It is also necessary to consider cumulative interference and back. Factors such as limited network resources and unbalanced network load.
  • distributed management allows each node to compete with each other in order to meet its own Quality of Service (QoS) requirements, causing serious interference and conflict problems, which in turn leads to deterioration of overall network performance.
  • QoS Quality of Service
  • a node is a cooperative node of multiple virtual cells at the same time, while negotiating resources with a cooperative node of one of the virtual cells, it may receive a negotiation request from other multiple virtual cells, and is distributed. It is difficult to solve the conflict problem of multi-node in resource decision making under the framework; at the same time, because the node does not have regional global information, its decision cannot make efficient use of radio resources and backhaul resources.
  • the decision indicators of virtual cell construction and cooperative node selection are single under the distributed management architecture, and it is difficult to solve the conflict and interference caused by multi-nodes for resource competition.
  • the embodiment of the invention provides a method for constructing a virtual cell, a method for selecting a cooperative node, and a device, so as to at least solve the problem that the decision index of the virtual cell construction and the collaborative node selection in the distributed management architecture is single in the related art.
  • a method of constructing a virtual cell is provided.
  • the method for constructing a virtual cell includes: receiving a sounding reference signal (SRS) measurement result reported by a plurality of neighboring nodes or a reference signal (RS) measurement result reported by a user equipment (UE); according to the SRS measurement result or the RS The measurement result determines a candidate cooperative node set, and reports the candidate cooperative node set to the centralized management device; receives the virtual cell configuration information from the centralized management device, and constructs a virtual cell between the multiple cooperative nodes and the UE according to the virtual cell configuration information.
  • the plurality of cooperative nodes are centralized management devices, and all services in the area in which they are located are respectively selected from respective sets of candidate cooperative nodes.
  • receiving the SRS measurement result reported by the multiple neighboring nodes includes: requesting to acquire SRS configuration information of the UE from the centralized management apparatus; and sending SRS configuration information to multiple neighboring nodes located in the neighboring node list, and notifying the multiple neighboring nodes to perform SRS Measurement; receiving SRS measurements from multiple neighboring nodes.
  • the SRS configuration information is determined by the central management device according to the information stored in the preset interference relationship library, where the SRS configuration information includes at least one of the following: SRS time domain resource information, SRS frequency domain resource information, and SRS code domain. Resource information.
  • receiving the RS measurement result reported by the UE comprises: sending RS configuration information of the multiple neighboring nodes located in the neighboring node list to the UE; and receiving the RS measurement result from the UE after the UE performs the RS measurement.
  • determining the candidate cooperative node set according to the SRS measurement result or the RS measurement result comprises: selecting some or all nodes whose signal strength or signal quality is greater than a preset threshold from a plurality of neighboring nodes according to the SRS measurement result or the RS measurement result; Or all nodes determine a set of candidate collaboration nodes.
  • the method further includes: determining, according to the quality of service (QoS) requirement of each service in all services, the collaboration of the service service from the set of candidate cooperation nodes.
  • QoS quality of service
  • determining a minimum number of cooperative nodes for each service service comprises: determining a data transmission rate (DTR) according to a QoS requirement of each service; and estimating a signal to interference plus noise ratio (SINR) according to the SRS measurement result or the RS measurement result.
  • the modulation and coding strategy (MCS) is determined according to the SINR; the minimum number of cooperative nodes is determined according to the MCS, the available bandwidth, and the DTR.
  • the constructing the virtual cell between the multiple cooperative nodes according to the virtual cell configuration information includes: sending the virtual cell configuration information to the UE by using the system message; and collaborating with each service in the entire service according to the virtual cell configuration information
  • the node information transmits the virtual cell configuration information to other cooperative nodes other than itself, wherein the cooperative node information is combined by the centralized management device according to the minimum number of candidate cooperative node sets and the cooperative nodes, and each candidate cooperative node in the candidate cooperative node set
  • the load information and the backhaul resource information are determined; a virtual cell is constructed between the UE and other coordinated nodes.
  • a method of selecting a cooperative node is provided.
  • a method for selecting a coordinated node includes: receiving a set of candidate cooperative nodes reported by a plurality of control nodes, wherein the set of candidate cooperative nodes is an SRS measurement result reported by the control node according to multiple neighboring nodes of the control node or the UE The reported RS measurement result is determined; a plurality of collaboration nodes are selected from the candidate collaboration node set for each service in all the services in the current region.
  • the method further includes: receiving a minimum number of the cooperative nodes from the control node, wherein the minimum number of the cooperative nodes is the control node according to the quality of service QoS requirement of each service. Determined in the set of candidate collaboration nodes.
  • selecting a plurality of cooperative nodes from the set of candidate cooperative nodes comprises: sorting all the services according to the priority of each service from high to low; according to the order of the service priorities from high to low according to each of the candidate cooperative node sets
  • the load information of the candidate cooperative node and the backhaul resource information select a plurality of cooperation nodes satisfying the quality of service QoS requirements of each service, wherein the number of the plurality of cooperation nodes is greater than or equal to the minimum number of the cooperation nodes.
  • a device for constructing a virtual cell is provided.
  • the apparatus for constructing a virtual cell includes: a first receiving module, configured to receive an SRS measurement result reported by a plurality of neighboring nodes or an RS measurement result reported by the UE; and a first determining module configured to perform the SRS measurement result or The RS measurement result determines a candidate cooperative node set, and reports the candidate cooperative node set to the centralized management device; the constructing module is configured to receive virtual cell configuration information from the centralized management device, and according to the virtual cell configuration information, at the multiple cooperative nodes and A virtual cell is constructed between the UEs, wherein the plurality of cooperative nodes are centralized management devices, and all services in the area are respectively selected from respective sets of candidate cooperative nodes.
  • the first receiving module includes: an obtaining unit, configured to request to acquire SRS configuration information of the UE from the centralized management device; and the first sending unit is configured to send SRS configuration information to the multiple neighboring nodes located in the neighboring node list, and notify The plurality of neighboring nodes perform SRS measurement; the first receiving unit is configured to receive SRS measurement results from the plurality of neighboring nodes.
  • the SRS configuration information is determined by the central management device according to the information stored in the preset interference relationship library, where the SRS configuration information includes at least one of the following: SRS time domain resource information, SRS frequency domain resource information, and SRS code domain. Resource information.
  • the first receiving module includes: a second sending unit, configured to send RS configuration information of the multiple neighboring nodes located in the neighboring node list to the UE; and the second receiving unit is configured to receive after the UE performs the RS measurement RS measurement results from the UE.
  • the first determining module includes: a selecting unit, configured to select, from the plurality of neighboring nodes, part or all nodes whose signal strength or signal quality is greater than a preset threshold according to the SRS measurement result or the RS measurement result; the first determining unit, setting A set of candidate collaborative nodes is determined for some or all of the nodes.
  • the apparatus further includes: a second determining module, configured to determine, from the set of candidate coordinated nodes, a minimum number of cooperative nodes serving the service according to QoS requirements of each service in all services.
  • a second determining module configured to determine, from the set of candidate coordinated nodes, a minimum number of cooperative nodes serving the service according to QoS requirements of each service in all services.
  • the second determining module includes: a second determining unit configured to determine a DTR according to a QoS requirement of each service; an estimating unit configured to estimate an SINR according to the SRS measurement result or the RS measurement result; and a third determining unit configured to The SINR determines an MCS; a fourth determining unit is configured to determine a minimum number of cooperative nodes based on the MCS, the available bandwidth, and the DTR.
  • the building module includes: a third sending unit, configured to send the virtual cell configuration information to the UE by using a preset system message; and the fourth sending unit is configured to perform each service in the virtual cell configuration information and all the services.
  • Corresponding cooperative node information transmits virtual cell configuration information to other cooperative nodes other than itself, wherein the cooperative node information is combined by the centralized management device according to the candidate cooperative node set and the minimum number of the cooperative nodes, each candidate in the candidate cooperative node set The load information of the cooperation node and the backhaul resource information are determined; the construction unit is configured to construct a virtual cell between the UE and other cooperation nodes.
  • a selection means of a cooperative node is provided.
  • the selecting device of the cooperative node includes: a first receiving module, configured to receive a set of candidate cooperative nodes reported by the control node, where the set of candidate cooperative nodes is reported by the control node according to multiple neighboring nodes of the control node The detection reference signal SRS measurement result or the reference signal RS measurement result reported by the user equipment UE is determined; the selection module is configured to select a plurality of cooperation nodes from the respective candidate cooperation node sets for all services in the current region.
  • the apparatus further includes: a second receiving module, configured to receive a minimum number of cooperative nodes from the control node, wherein the minimum number of cooperative nodes is that the control node selects from the candidate cooperative node according to the quality of service QoS requirement of each service. Determined in the collection.
  • a second receiving module configured to receive a minimum number of cooperative nodes from the control node, wherein the minimum number of cooperative nodes is that the control node selects from the candidate cooperative node according to the quality of service QoS requirement of each service. Determined in the collection.
  • the selecting module comprises: a sorting unit, configured to sort all the services according to the priority of each service from high to low; the selecting unit is set according to the order of the service priorities from high to low according to the candidate cooperative node set.
  • the load information of each candidate cooperative node and the backhaul resource information select a plurality of cooperative nodes satisfying the quality of service QoS requirements of each service, wherein the number of the plurality of cooperative nodes is greater than or equal to the minimum number of the cooperative nodes.
  • the SRS measurement result reported by the multiple neighboring nodes or the RS measurement result reported by the UE is received; the candidate cooperative node set is determined according to the SRS measurement result or the RS measurement result, and the candidate cooperative node set is reported to the centralized management apparatus.
  • FIG. 1 is a flowchart of a method for constructing a virtual cell according to an embodiment of the present invention
  • FIG. 2 is a flowchart of a method of selecting a cooperative node according to an embodiment of the present invention
  • FIG. 3 is a schematic diagram of a virtual cell construction scenario in a macro station coverage scenario according to a preferred embodiment of the present invention
  • FIG. 4 is a schematic diagram of a virtual cell construction scenario in a scenario without macro base station coverage according to a preferred embodiment of the present invention
  • FIG. 5 is a structural block diagram of an apparatus for virtual cell construction and cooperative node selection in accordance with a preferred embodiment of the present invention
  • FIG. 6 is a flow chart of a virtual cell construction and cooperative node selection method in accordance with a preferred embodiment of the present invention.
  • FIG. 7 is a flowchart of signaling interaction of virtual cell construction and cooperative node selection in a node-side measurement mode according to a preferred embodiment of the present invention.
  • FIG. 8 is a flowchart of signaling interaction using virtual cell construction and cooperative node selection in a UE-side measurement mode according to a preferred embodiment of the present invention
  • FIG. 9 is a flow chart showing an example of a centralized management device determining a service collaboration node in accordance with a preferred embodiment of the present invention.
  • FIG. 10 is a structural block diagram of a device for constructing a virtual cell according to an embodiment of the present invention.
  • FIG. 11 is a structural block diagram of a device for constructing a virtual cell according to a preferred embodiment of the present invention.
  • FIG. 12 is a structural block diagram of a selection apparatus of a cooperative node according to an embodiment of the present invention.
  • Figure 13 is a block diagram showing the structure of a selection means of a cooperative node in accordance with a preferred embodiment of the present invention.
  • FIG. 1 is a flowchart of a method for constructing a virtual cell according to an embodiment of the present invention. As shown in FIG. 1, the method may include the following processing steps:
  • Step S102 Receive an SRS measurement result reported by multiple neighboring nodes or an RS measurement result reported by the UE;
  • Step S104 Determine a candidate cooperative node set according to the SRS measurement result or the RS measurement result, and report the candidate cooperative node set to the centralized management apparatus;
  • Step S106 Receive virtual cell configuration information from the central management device, and construct a virtual cell between the multiple cooperative nodes and the UE according to the virtual cell configuration information, where the multiple coordinated nodes are all services of the localized management device. Selected from the respective set of candidate cooperative nodes.
  • the decision indicators of the virtual cell construction and the cooperative node selection are single, and in addition, the problem of conflict and interference generated by the multiple nodes for resource competition is difficult to solve.
  • the method shown in FIG. 1 is adopted to select a corresponding cooperative node for the service in a centralized manner to construct a virtual cell, thereby solving the decision index of the virtual cell construction and the cooperative node selection in the distributed management architecture in the related art.
  • the problem of conflict and interference caused by single and multi-nodes for resource competition can effectively improve resource utilization and better meet the needs of different services.
  • receiving the SRS measurement results reported by the multiple neighboring nodes may include the following operations:
  • Step S1 requesting, by the central management device, acquiring SRS configuration information of the UE;
  • Step S2 Send SRS configuration information to multiple neighboring nodes located in the neighboring node list, and notify multiple neighboring nodes to perform SRS measurement;
  • Step S3 Receive SRS measurement results from a plurality of neighboring nodes.
  • the SRS configuration information is determined by the centralized management device according to the information stored in the preset interference relationship database, where the SRS configuration information may include, but is not limited to, at least one of the following:
  • the centralized management device determines Sounding Reference Signal (SRS) configuration information for the newly accessed UE, where the SRS configuration information may include Information in the time domain, frequency domain, and code domain, and transmitting the SRS configuration information to the control node;
  • SRS Sounding Reference Signal
  • the centralized management device can determine the SRS time-frequency code domain resource according to the information in the interference relationship library, and can ensure orthogonalization with other UEs in the region; the area here refers to all node coverage in the control node and its neighbor node list. region.
  • receiving the RS measurement result reported by the UE may include the following steps:
  • Step S4 Send RS configuration information of multiple neighboring nodes located in the neighboring node list to the UE;
  • Step S5 After the UE performs the RS measurement, the RS measurement result from the UE is received.
  • control node informs the node in the neighboring node list to measure the SRS signal strength or quality from the UE and reports the measurement result to the control node.
  • control node may also send the node-side RS information in the neighboring node list to the UE, and the UE measures the strength or quality of the node RS from the list, and then reports the measurement result to the control node.
  • determining the candidate cooperative node set according to the SRS measurement result or the RS measurement result may include the following operations:
  • Step S6 selecting some or all nodes whose signal strength or signal quality is greater than a preset threshold from multiple neighboring nodes according to the SRS measurement result or the RS measurement result;
  • Step S7 determining a candidate cooperative node set by some or all of the nodes.
  • the control node may select a node whose signal quality is greater than a specific threshold as a candidate node according to the measurement result reported by the neighboring node or the UE side, and send the selection result to the centralized management apparatus.
  • the following steps may also be included:
  • Step S8 Determine the minimum number of cooperative nodes serving the service service from the set of candidate cooperative nodes according to the quality of service QoS requirements of each service in all services.
  • determining the minimum number of cooperative nodes for each service service may include the following operations:
  • Step S9 determining DTR according to QoS requirements of each service
  • Step S10 estimating an SINR according to the SRS measurement result or the RS measurement result;
  • Step S11 determining an MCS according to the SINR
  • Step S12 Determine the minimum number of cooperative nodes according to the MCS, the available bandwidth, and the DTR.
  • the control node may determine the number L of cooperative nodes of the service according to the service QoS requirement of the user, and report the result to the centralized management device.
  • the preferred implementation process is as follows: the control node may determine according to the service QoS requirement (for example, GBR).
  • the service rate requires DTR; the signal to interference and noise ratio (SINR) under different cooperative nodes is estimated according to the strength or quality of the RS signal reported by the neighboring node or the UE side, and the corresponding transmission coding format MCS is determined according to the SINR; finally, according to the MCS format and the available bandwidth BW Determine the number of collaboration nodes that can meet the DTR requirements.
  • constructing the virtual cell between the plurality of cooperative nodes according to the virtual cell configuration information may include the following operations:
  • Step S13 transmitting virtual cell configuration information to the UE by using a preset system message
  • Step S14 The virtual cell configuration information is sent to other cooperative nodes except itself, according to the cooperative node information corresponding to each service in all the services carried in the virtual cell configuration information, where the cooperative node information Is determined by the central management device according to the minimum number of candidate cooperative node sets and the cooperative nodes combined with the load information of each candidate cooperative node in the candidate cooperative node set and the backhaul resource information;
  • Step S15 Construct a virtual cell between the UE and other cooperative nodes.
  • the control node receives virtual cell configuration information from the central management device, where the virtual cell configuration information may include, but is not limited to, service node information, virtual cell ID, cooperation mode, and other radio resource configuration information. Then, the virtual cell configuration information is sent to the UE in the form of a system message; at the same time, information such as the virtual cell ID (for layer 2 virtualization) is sent to other cooperative nodes, and the cooperative node is notified to construct a virtual cell to provide data for the corresponding service. Transmitted service.
  • the virtual cell configuration information may include, but is not limited to, service node information, virtual cell ID, cooperation mode, and other radio resource configuration information.
  • FIG. 2 is a flow chart of a method of selecting a cooperative node according to an embodiment of the present invention. As shown in FIG. 2, the method may include the following processing steps:
  • Step S202 Receive a set of candidate cooperative nodes that are reported by the multiple control nodes, where the set of candidate cooperative nodes is determined by the control node according to the SRS measurement result reported by the multiple neighboring nodes of the control node or the RS measurement result reported by the UE;
  • Step S204 Select a plurality of collaboration nodes from the set of candidate collaboration nodes for each of all services in the current region.
  • the following operations may also be included:
  • Step S16 Receive a minimum number of cooperative nodes from the control node, wherein the minimum number of cooperative nodes is determined by the control node from the set of candidate cooperative nodes according to the quality of service QoS requirements of each service.
  • selecting a plurality of collaboration nodes from the set of candidate collaboration nodes may include the following steps:
  • Step S17 Sort all the services according to the priority of each service from high to low;
  • Step S18 Select, according to the load information of each candidate cooperative node in the candidate cooperative node set and the backhaul resource information, a plurality of cooperative nodes that meet the quality of service QoS requirements of each service according to the priority of the service, wherein The number of multiple collaboration nodes is greater than or equal to the minimum number of collaboration nodes.
  • the centralized manager receives information from the control node, determines a corresponding service node for all services in the area, and transmits the result to the control node; meanwhile, the centralized manager determines the virtual size of each service.
  • Information such as zone ID, cooperative mode or MIMO mode, radio resource configuration, etc., is transmitted to the control node along with the service node information.
  • the centralized management device may sort all the services in the current area according to the priority, and determine the service node for each service according to the priority order.
  • the preferred implementation process is as follows: selecting a service with a high priority, determining a load status and a return resource of the candidate node. Whether the service QoS requirement is met, the L nodes that satisfy the QoS requirement with the lowest load and the most backhaul resources are selected among the candidate nodes as the service nodes of the service.
  • the centralized management device may update the node load information base according to each service service node allocation status, and the node Backhaul information base interferes with the content of the relationship library.
  • the centralized management device receives measurement information from each node, such as load information, node backhaul capability information, reference signal strength, etc., updates the node load information base, the node backhaul information base, and the interference relationship library.
  • FIG. 3 is a schematic diagram of a virtual cell construction scenario in a macro station coverage scenario according to a preferred embodiment of the present invention.
  • the macro base station serves as a node connected to the external network, and the centralized management device (Concentrator) ) located in the macro base station.
  • the control plane and the service plane can be separated, and the transmission and reception of the control plane signaling are all handled by the macro base station.
  • FIG. 4 is a schematic diagram of a virtual cell construction scenario in a scenario without macro base station coverage according to a preferred embodiment of the present invention.
  • the centralized management device can be used as a node connected to an external network, and the centralized management device can be a powerful Small Cell node, or a domain manager or a central server.
  • the control plane and the service plane may be separated, and the control node is responsible for the transmission and/or reception of the control plane signaling.
  • the apparatus for virtual cell construction and cooperative node selection may include: a measurement module, located at a control node and a data node side, for performing reference signal (referencing for RS) measurement and reporting.
  • the candidate node selection module is located on the control node side, and is configured to select a candidate service node according to the RS measurement result and report it to the central management node.
  • the management database is located in the centralized management device and may include, but is not limited to, at least one of the following: an interference relationship library, a UE context information base, a node load information base, and a backhaul resource information base.
  • the service node decision module is located in the centralized management device and is used to select candidates according to the control node
  • the virtual cell configuration module is located in the central management device and is used to determine other configuration information required for constructing the virtual cell, such as a virtual cell ID, a collaboration mode, and a radio resource configuration.
  • the result of the measurement module in the data node side can be transmitted to the candidate node selection module of the control node through the air interface or the wired connection, and the output result of the candidate node selection module can be directly transmitted to the service node decision module through the backhaul network, and the service node determines the decision.
  • the result of the module and the virtual cell configuration module can also be transmitted to the control node side directly or through the backhaul network, and the control node can notify the corresponding data node to construct the virtual cell through the air interface or the wired connection.
  • FIG. 6 is a flow diagram of a virtual cell construction and cooperative node selection method in accordance with a preferred embodiment of the present invention. As shown in FIG. 6, the method may include the following processing steps:
  • Step S602 After receiving the request message from the control node, the centralized management device determines the Sounding Reference Signal (SRS) configuration information for the newly accessed UE, where the SRS configuration information may include but not It is limited to: time domain information, frequency domain information, and code domain information, and sends SRS configuration information to the control node.
  • SRS Sounding Reference Signal
  • the centralized management device can determine the SRS time domain, the frequency domain, and the code domain resources according to the information stored in the interference relationship library, thereby ensuring orthogonalization with other UEs in the region.
  • an area refers to all node coverage areas in the control node and its neighbor list.
  • Step S604 The control node notifies the node in the neighboring node list, measures the SRS signal strength or the SRS signal quality from the UE, and reports the measurement result to the control node.
  • control node sends the node-side RS information in the neighboring node list to the UE, and the UE measures the RS strength or RS quality of the node from the list, and then reports the measurement result to the control node.
  • Step S606 The control node selects a node whose signal quality is greater than a preset threshold as a candidate node according to the measurement result reported by the neighboring node or the UE side, and transmits the result to the centralized management apparatus.
  • the control node may determine the number L of cooperative nodes of the service according to the service QoS requirement of the user, and report the number to the centralized management device.
  • the specific method is: the control node may determine the service according to the service QoS requirement (for example, GBR).
  • the rate requirement DTR is further estimated according to the RS signal strength or the RS signal quality reported by the neighboring node or the UE side, and the signal to interference and noise ratio (SINR) of the different cooperative nodes is determined, and the corresponding transmission coding format MCS is determined; finally, according to the MCS format and the available bandwidth BW, Determine the number of collaboration nodes that can meet the DTR requirements.
  • Step S608 The centralized management device receives the information reported by the control node, determines a corresponding service node for all services in the area, and transmits the result to the control node. At the same time, the centralized management device determines the virtual cell ID, cooperation mode, or MIMO of each service. Information such as mode and radio resource configuration is transmitted to the control node along with the service node information.
  • the centralized management device sorts all services in the current area according to priorities, and determines service nodes for each service according to the priority order. Specifically, the service with a high priority is selected, and the load status of the candidate node and the returned resource satisfy the service QoS requirement, and the L nodes with the lowest load and the most returned resources satisfying the QoS requirement are selected as the service. Service node.
  • the centralized management device updates the contents of the node load information base, the node Backhaul information base, and the interference relationship base according to the allocation status of each service service node.
  • the centralized management device receives measurement information from each node, such as load information, node backhaul capability information, reference signal strength, etc., and updates the node load information base, the node backhaul information base, and the interference relationship library.
  • measurement information such as load information, node backhaul capability information, reference signal strength, etc.
  • Step S610 The control node receives the virtual cell configuration information from the centralized management device, where the virtual cell configuration information may include, but is not limited to, a service node, a virtual cell ID, a cooperation mode, and other radio resource configurations, etc., to system messages.
  • the form sends the virtual cell configuration information to the UE; at the same time, the information such as the virtual cell ID (for layer 2 virtualization) is sent to other cooperative nodes to notify the cooperative node to construct the virtual cell, and provide the data transmission service for the corresponding service. .
  • Case 1 Initial access by the user
  • FIG. 7 is a flow chart of signaling interactions for virtual cell construction and cooperative node selection in a node-side measurement mode, in accordance with a preferred embodiment of the present invention. As shown in FIG. 7, when the user initially accesses, a random access procedure needs to be performed with the control node.
  • the control node needs to request the centralized management device to perform the SRS configuration on the UE side.
  • the centralized management device is responsible for configuring the radio resources of the SRS time domain, the frequency domain, and the code domain of all UEs in the area, and combining the interference relationship library in the centralized management device to ensure the SRS wireless of the UE.
  • the resources are orthogonal to other UEs to avoid pilot pollution between different UEs.
  • the SRS configuration of the UE is sent to the node in the neighboring node list, and the node is notified to perform SRS measurement.
  • Each control node maintains a list of neighboring nodes, which are established and periodically updated through network listening or UE measurement reporting results.
  • the neighboring node reports the SRS measurement result (for example, RSRP or RSRQ) to the control node.
  • FIG. 8 is a flowchart of signaling interaction using virtual cell construction and cooperative node selection in a UE-side measurement mode according to a preferred embodiment of the present invention.
  • the control node sends the RS configuration information of the neighboring node to the UE, and the UE reports the RSRP or RSRQ measurement information from the neighboring node to the control node after performing the RS measurement.
  • the random access procedure and the SRS configuration process need not be performed.
  • the control node performs candidate cooperative node selection after receiving the measurement result reported by the neighboring node or the UE side.
  • the selection of candidate nodes can be done as follows:
  • the difference is compared with the preset threshold Threshold. If the node is lower than the preset threshold, it can be used as the candidate node. It is assumed that the number of candidate nodes is M; the above Threshold can be configured by a higher layer, for example: 3 dB.
  • the control node When estimating the optimal number of nodes, the control node first selects the best RSRP or RSRQ node, and estimates the signal to interference and noise ratio SINR and the corresponding MCS format, wherein the correspondence between the SINR and the MCS format is set by a preset CQI-MCS mapping table. get.
  • the data transmission rate DTR is calculated according to the MCS format and bandwidth according to the following formula:
  • the RSRP values of all the received nodes are arranged in descending order, and the sequence numbers are: RSRP 1 , RSRP 2 , ..., RSRP M.
  • the method for estimating the SINR by RSRP can adopt the following formula:
  • the RSRP in this formula is a linear value.
  • the SINR when two nodes cooperatively transmit data can be estimated according to the following formula:
  • the estimated SINR values of the L nodes can be obtained.
  • FIG. 9 is a flow diagram of an example of a centralized management device determining a service collaboration node in accordance with a preferred embodiment of the present invention. As shown in FIG. 9, after receiving the candidate node information of the control node and the number of nodes, the centralized management apparatus determines the cooperation node for each service by using centralized selection scheduling.
  • the centralized management device sorts all the services in the area according to the service priority order, selects the user with the highest priority, and selects the L nodes with the lowest load and the most returned resources from the candidate nodes to be allocated to the user; if there is no L that satisfies the condition Resources, for example, if the load of most nodes is heavy or the resources are insufficient, the number of cooperative nodes can be reduced, and the nodes satisfying the conditions of load and return overhead can be found. If no node satisfies the condition, it is not The service distribution service node directly deletes the service from the list and cycles through it until all services are allocated.
  • the context information can also be combined to select the best collaboration node according to the context, thereby reducing the number of handovers and improving the utilization of the return resources.
  • the centralized management device needs to maintain the following four databases: the interference relationship library, the UE context information base, the node Backhaul information base, and the node load information base.
  • the establishment and update of these repositories can be maintained by periodically and evently reporting measurement information from different nodes.
  • the centralized management device sends the coordinated node assignment result of the service and other virtual cell configurations, for example, a virtual cell ID (for L2 virtualization), a cooperative mode (or MIMO mode), and other radio resource configuration information, etc., to the control node,
  • the control node sends the virtual cell configuration information to the UE in the form of a system message; at the same time, the information such as the virtual cell ID (for L2 virtualization) is sent to other coordinated nodes, and the cooperative node is notified to construct a virtual cell to provide services for different services of the user. .
  • FIG. 10 is a structural block diagram of a device for constructing a virtual cell according to an embodiment of the present invention.
  • the apparatus for constructing the virtual cell may include: a first receiving module 10 configured to receive an SRS measurement result reported by multiple neighboring nodes or an RS measurement result reported by the UE; and the first determining module 20 is configured to SRS measurement results or The RS measurement result determines the candidate cooperative node set, and reports the candidate cooperative node set to the centralized management device; the constructing module 30 is configured to receive the virtual cell configuration information from the centralized management device, and according to the virtual cell configuration information in the multiple cooperative nodes And constructing a virtual cell between the UEs, wherein the plurality of cooperative nodes are centralized management devices, and all services in the area are respectively selected from respective sets of candidate cooperative nodes.
  • the device shown in FIG. 10 solves the problem that the decision indicators of virtual cell construction and cooperative node selection in the distributed management architecture are single in the related art, thereby effectively improving resource utilization and better satisfying different services. demand.
  • the first receiving module 10 may include: an obtaining unit 100, configured to request to acquire SRS configuration information of the UE from the central management device; and the first sending unit 102 is configured to be located in the neighboring node list.
  • the plurality of neighboring nodes transmit SRS configuration information, and notify the plurality of neighboring nodes to perform SRS measurement; and the first receiving unit 104 is configured to receive SRS measurement results from the plurality of neighboring nodes.
  • the SRS configuration information is determined by the centralized management device according to the information stored in the preset interference relationship database, where the SRS configuration information may include, but is not limited to, at least one of the following:
  • the first receiving module 10 may include: a second sending unit 106 configured to send RS configuration information of multiple neighboring nodes located in the neighboring node list to the UE; the second receiving unit 108, It is configured to receive an RS measurement result from the UE after the UE performs the RS measurement.
  • the first determining module 20 may include: a selecting unit 200 configured to select, from the plurality of neighboring nodes, a signal strength or a signal quality that is greater than a preset threshold according to the SRS measurement result or the RS measurement result or All nodes; a first determining unit 202, configured to determine a set of candidate cooperative nodes by some or all of the nodes.
  • the apparatus may further include: a second determining module 40 configured to determine, as a cooperative node of the service service, from the set of candidate cooperative nodes according to the quality of service QoS requirement of each service in all services. The minimum number.
  • the second determining module 40 may include: a second determining unit 400 configured to determine a data transmission rate DTR according to a QoS requirement of each service; and an estimating unit 402 configured to be based on the SRS The measurement result or the RS measurement result estimated signal to interference plus noise ratio SINR; the third determining unit 404 is configured to determine the modulation and coding strategy MCS according to the SINR; and the fourth determining unit 406 is configured to determine the cooperative node according to the MCS, the available bandwidth, and the DTR The minimum number.
  • the building module 30 may include: a third sending unit 300 configured to send virtual cell configuration information to the UE by using a preset system message; and a fourth sending unit 302 configured to follow the virtual cell configuration information.
  • the cooperative node information carried in each service corresponding to each service in the entire service transmits the virtual cell configuration information to other cooperative nodes except itself, wherein the cooperative node information is determined by the centralized management device according to the candidate cooperative node set and the cooperative node.
  • the quantity is determined in conjunction with load information and backhaul resource information of each of the candidate cooperative nodes in the set of candidate cooperative nodes; the constructing unit 304 is configured to construct a virtual cell between the UE and other coordinated nodes.
  • FIG. 12 is a structural block diagram of a selection device of a cooperative node according to an embodiment of the present invention.
  • the selecting means of the cooperative node may include: a first receiving module 50 configured to receive a set of candidate cooperative nodes reported by the control node, where the set of candidate cooperative nodes is a plurality of neighbors of the control node according to the control node Determining the sounding reference signal SRS measurement result reported by the node or the reference signal RS measurement result reported by the user equipment UE; the selecting module 60 is configured to select multiple cooperative nodes from the respective candidate cooperative node sets for all services in the current area. .
  • the apparatus may further include: a second receiving module 70 configured to receive a minimum number of cooperative nodes from the control node, wherein a minimum number of cooperative nodes is a control node according to each service Quality of Service QoS requirements are determined from a set of candidate collaborative nodes.
  • a second receiving module 70 configured to receive a minimum number of cooperative nodes from the control node, wherein a minimum number of cooperative nodes is a control node according to each service Quality of Service QoS requirements are determined from a set of candidate collaborative nodes.
  • the selecting module 60 may include: a sorting unit 600, configured to sort all the services according to the priority of each service from high to low; and the selecting unit 602 is set to be high according to the service priority. Selecting, in a low order, a plurality of cooperation nodes satisfying the quality of service QoS requirements of each service according to load information of each candidate cooperation node in the candidate cooperation node set and backhaul resource information, wherein the number of the plurality of cooperation nodes is greater than or equal to The minimum number of collaboration nodes.
  • a sorting unit 600 configured to sort all the services according to the priority of each service from high to low
  • the selecting unit 602 is set to be high according to the service priority. Selecting, in a low order, a plurality of cooperation nodes satisfying the quality of service QoS requirements of each service according to load information of each candidate cooperation node in the candidate cooperation node set and backhaul resource information, wherein the number of the plurality of cooperation nodes is greater than or equal to The minimum number of collaboration nodes.
  • the mode selects the corresponding cooperative node for the service to construct the virtual cell, which can effectively avoid the interference and conflict of the wireless resources and the return resources between the cooperative nodes in the distributed architecture, and effectively improve the virtual wireless resources and Return the utilization of resources and improve network performance.
  • different cooperative nodes can be selected for different services of the same user, thereby effectively improving resource utilization and better meeting the needs of different services.
  • modules or steps of the present invention described above can be implemented by a general-purpose computing device that can be centralized on a single computing device or distributed across a network 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 invention is not limited to any specific combination of hardware and software.
  • the method for constructing a virtual cell and the method and apparatus for selecting a cooperative node provided by the embodiments of the present invention have the following beneficial effects: the interference between the radio resources and the backhaul resources between the cooperative nodes in the distributed architecture can be effectively avoided. And conflicts, improving the utilization of virtual wireless resources and return resources and network performance.
  • different cooperative nodes can be selected for different services of the same user, thereby effectively improving resource utilization and better meeting the needs of different services.

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Abstract

本发明公开了一种虚拟小区的构建、协作节点的选择方法及装置，在上述方法中，接收多个邻近节点上报的SRS测量结果或UE上报的RS测量结果；根据SRS测量结果或RS测量结果确定候选协作节点集合，并将候选协作节点集合上报至集中管理装置；接收来自于集中管理装置的虚拟小区配置信息，并根据虚拟小区配置信息在多个协作节点以及UE之间构建虚拟小区，其中，多个协作节点是集中管理装置为所在区域的所有业务分别从各自的候选协作节点集合中选取的。根据本发明提供的技术方案，能够有效地提高资源利用率，更好地满足不同业务的需求。

Description

虚拟小区的构建、协作节点的选择方法及装置 技术领域
本发明涉及通信领域，具体而言，涉及一种虚拟小区的构建、协作节点的选择方法及装置。
背景技术
随着智能终端和多元化业务的蓬勃发展，未来无线网络将会呈现出密集部署、多样业务、异构网络并存的多样化形态。在复杂的网络环境下，高弹性和可扩展网络技术的研究受到越来越多的关注与重视，网络虚拟化技术即为其中之一。早期的网络虚拟化技术研究主要集中在核心网侧，例如：虚拟局域网(Virtual LAN，简称为VLAN)、软件定义网络(Soft-Defined Network，简称为SDN)等。虚拟化技术在有线网络侧已经得到了广泛应用。而无线网络相比于有线网络更加复杂，需要考虑信道的不确定性，干扰和信令开销等问题。
对于无线网络虚拟化、虚拟化架构、虚拟化控制方式以及资源的虚拟化管理是关注的重点和热点，尤其是虚拟资源的管理。现有的无线网络虚拟小区构建和为业务提供服务的协作节点选择方案中，仍需要考虑传统的小区选择技术，即主要依靠对无线信号强度的测量信息，例如：参考信号接收强度(Reference Signal Received Power，简称为RSRP)和参考信号接收质量(Reference Signal Received Quality，简称为RSRQ)等，网络侧节点采用分布式的管理方式独立判决或者与邻近节点协商的方式确定。
在密集和无规律部署的网络场景下，节点之间面临着干扰复杂和环境多样的问题，这种仅仅依靠无线信号强度为指标的分布式管理已经无法适应，还必须要考虑到累计干扰、回传网络资源受限以及网络负荷失衡等因素。另外，分布式管理使得各节点为了满足自己的服务质量(Quality of Service，简称为QoS)需求而相互竞争，产生严重的干扰和冲突问题，进而导致整体网络性能恶化。例如：当某个节点同时为多个虚拟小区的协作节点时，在与其中一个虚拟小区的协作节点协商资源的同时，又可能会接收到来自其他多个虚拟小区的协商请求，而在分布式架构下很难解决多节点在资源决策中的冲突问题；同时，由于该节点不具备区域全局信息，其决策无法使得无线资源和回传资源得到有效利用。
综上所述，相关技术中在分布式管理架构下虚拟小区构建与协作节点选择的判决指标单一，以及难以解决多节点对于资源竞争产生的冲突和干扰。
发明内容
本发明实施例提供了一种虚拟小区的构建、协作节点的选择方法及装置，以至少解决相关技术中在分布式管理架构下虚拟小区构建与协作节点选择的判决指标单一的问题。
根据本发明的一个方面，提供了一种虚拟小区的构建方法。
根据本发明实施例的虚拟小区的构建方法包括：接收多个邻近节点上报的探测参考信号(SRS)测量结果或用户设备(UE)上报的参考信号(RS)测量结果；根据SRS测量结果或RS测量结果确定候选协作节点集合，并将候选协作节点集合上报至集中管理装置；接收来自于集中管理装置的虚拟小区配置信息，并根据虚拟小区配置信息在多个协作节点以及UE之间构建虚拟小区，其中，多个协作节点是集中管理装置为所在区域的所有业务分别从各自的候选协作节点集合中选取的。
优选地，接收多个邻近节点上报的SRS测量结果包括：从集中管理装置请求获取UE的SRS配置信息；向位于邻近节点列表中的多个邻近节点发送SRS配置信息，通知多个邻近节点进行SRS测量；接收来自于多个邻近节点的SRS测量结果。
优选地，SRS配置信息是由集中管理装置根据预设干扰关系库中存储的信息确定的，其中，SRS配置信息包括以下至少之一：SRS时域资源信息、SRS频域资源信息、SRS码域资源信息。
优选地，接收UE上报的RS测量结果包括：将位于邻近节点列表中的多个邻近节点的RS配置信息发送至UE；在UE执行RS测量后，接收来自于UE的RS测量结果。
优选地，根据SRS测量结果或RS测量结果确定候选协作节点集合包括：根据SRS测量结果或RS测量结果从多个邻近节点中选取信号强度或信号质量大于预设阈值的部分或全部节点；通过部分或全部节点确定候选协作节点集合。
优选地，在根据SRS测量结果或RS测量结果确定候选协作节点集合之后，还包括：根据全部业务中每项业务的服务质量(QoS)需求从候选协作节点集合中确定为该项业务服务的协作节点的最少数量。
优选地，确定为每项业务服务的协作节点的最少数量包括：根据每项业务的QoS需求确定数据传输速率(DTR)；根据SRS测量结果或RS测量结果估计信号与干扰加噪声比(SINR)；根据SINR确定调制与编码策略(MCS)；根据MCS、可用带宽以及DTR确定协作节点的最少数量。
优选地，根据虚拟小区配置信息在多个协作节点之间构建虚拟小区包括：采用系统消息将虚拟小区配置信息发送至UE；按照虚拟小区配置信息中携带的与全部业务中每项业务对应的协作节点信息将虚拟小区配置信息发送至除自身以外的其他协作节点，其中，协作节点信息是由集中管理装置根据候选协作节点集合和协作节点的最少数量结合候选协作节点集合中每个候选协作节点的负荷信息以及回传资源信息确定的；在UE以及其他协作节点之间构建虚拟小区。
根据本发明的另一方面，提供了一种协作节点的选择方法。
根据本发明实施例的协作节点的选择方法包括：接收多个控制节点上报的候选协作节点集合，其中，候选协作节点集合是控制节点根据该控制节点的多个邻近节点上报的SRS测量结果或UE上报的RS测量结果确定的；为当前所在区域内的所有业务中的每项业务从候选协作节点集合选取多个协作节点。
优选地，在接收控制节点上报的候选协作节点集合之后，还包括：接收来自于控制节点的协作节点的最少数量，其中，协作节点的最少数量是控制节点根据每项业务的服务质量QoS需求从候选协作节点集合中确定的。
优选地，从候选协作节点集合选取多个协作节点包括：对全部业务按照每项业务的优先级由高到低进行排序；按照业务优先级从高到低的顺序根据候选协作节点集合中每个候选协作节点的负荷信息以及回传资源信息选择满足每项业务的服务质量QoS需求的多个协作节点，其中，多个协作节点的数量大于或等于协作节点的最少数量。
根据本发明的又一方面，提供了一种虚拟小区的构建装置。
根据本发明实施例的虚拟小区的构建装置包括：第一接收模块，设置为接收多个邻近节点上报的SRS测量结果或UE上报的RS测量结果；第一确定模块，设置为根据SRS测量结果或RS测量结果确定候选协作节点集合，并将候选协作节点集合上报至集中管理装置；构建模块，设置为接收来自于集中管理装置的虚拟小区配置信息，并根据虚拟小区配置信息在多个协作节点以及UE之间构建虚拟小区，其中，多个协作节点是集中管理装置为所在区域的所有业务分别从各自的候选协作节点集合中选取的。
优选地，第一接收模块包括：获取单元，设置为从集中管理装置请求获取UE的SRS配置信息；第一发送单元，设置为向位于邻近节点列表中的多个邻近节点发送SRS配置信息，通知多个邻近节点进行SRS测量；第一接收单元，设置为接收来自于多个邻近节点的SRS测量结果。
优选地，SRS配置信息是由集中管理装置根据预设干扰关系库中存储的信息确定的，其中，SRS配置信息包括以下至少之一：SRS时域资源信息、SRS频域资源信息、SRS码域资源信息。
优选地，第一接收模块包括：第二发送单元，设置为将位于邻近节点列表中的多个邻近节点的RS配置信息发送至UE；第二接收单元，设置为在UE执行RS测量后，接收来自于UE的RS测量结果。
优选地，第一确定模块包括：选取单元，设置为根据SRS测量结果或RS测量结果从多个邻近节点中选取信号强度或信号质量大于预设阈值的部分或全部节点；第一确定单元，设置为通过部分或全部节点确定候选协作节点集合。
优选地，上述装置还包括：第二确定模块，设置为根据全部业务中每项业务的QoS需求从候选协作节点集合中确定为该项业务服务的协作节点的最少数量。
优选地，第二确定模块包括：第二确定单元，设置为根据每项业务的QoS需求确定DTR；估计单元，设置为根据SRS测量结果或RS测量结果估计SINR；第三确定单元，设置为根据SINR确定MCS；第四确定单元，设置为根据MCS、可用带宽以及DTR确定协作节点的最少数量。
优选地，构建模块包括：第三发送单元，设置为采用预设系统消息将虚拟小区配置信息发送至UE；第四发送单元，设置为按照虚拟小区配置信息中携带的与全部业务中每项业务对应的协作节点信息将虚拟小区配置信息发送至除自身以外的其他协作节点，其中，协作节点信息是由集中管理装置根据候选协作节点集合和协作节点的最少数量结合候选协作节点集合中每个候选协作节点的负荷信息以及回传资源信息确定的；构建单元，设置为在UE以及其他协作节点之间构建虚拟小区。
根据本发明的再一方面，提供了一种协作节点的选择装置。
根据本发明实施例的协作节点的选择装置包括：第一接收模块，设置为接收控制节点上报的候选协作节点集合，其中，候选协作节点集合是控制节点根据该控制节点的多个邻近节点上报的探测参考信号SRS测量结果或用户设备UE上报的参考信号RS测量结果确定的；选取模块，设置为为当前所在区域内的所有业务分别从各自的候选协作节点集合选取多个协作节点。
优选地，上述装置还包括：第二接收模块，设置为接收来自于控制节点的协作节点的最少数量，其中，协作节点的最少数量是控制节点根据每项业务的服务质量QoS需求从候选协作节点集合中确定的。
优选地，选取模块包括：排序单元，设置为对全部业务按照每项业务的优先级由高到低进行排序；选取单元，设置为按照业务优先级从高到低的顺序根据候选协作节点集合中每个候选协作节点的负荷信息以及回传资源信息选择满足每项业务的服务质量QoS需求的多个协作节点，其中，多个协作节点的数量大于或等于协作节点的最少数量。
通过本发明实施例，采用接收多个邻近节点上报的SRS测量结果或UE上报的RS测量结果；根据SRS测量结果或RS测量结果确定候选协作节点集合，并将候选协作节点集合上报至集中管理装置；接收来自于集中管理装置的虚拟小区配置信息，并根据虚拟小区配置信息在多个协作节点以及UE之间构建虚拟小区，其中，多个协作节点是集中管理装置从候选协作节点集合中为所在区域的全部业务选取的，解决了相关技术中在分布式管理架构下虚拟小区构建与协作节点选择的判决指标单一的问题，进而能够有效地提高资源利用率，更好地满足不同业务的需求。
附图说明
此处所说明的附图用来提供对本发明的进一步理解，构成本申请的一部分，本发明的示意性实施例及其说明用于解释本发明，并不构成对本发明的不当限定。在附图中：
图1是根据本发明实施例的虚拟小区的构建方法的流程图；
图2是根据本发明实施例的协作节点的选择方法的流程图；
图3是根据本发明优选实施例的存在宏站覆盖场景下的虚拟小区构建场景示意图；
图4是根据本发明优选实施例的没有宏基站覆盖场景下的虚拟小区构建场景示意图；
图5是根据本发明优选实施例的虚拟小区构建和协作节点选择的装置的结构框图；
图6是根据本发明优选实施例的虚拟小区构建和协作节点选择方法的流程图；
图7是根据本发明优选实施例的采用节点侧测量方式下虚拟小区构建和协作节点选择的信令交互流程图；
图8是根据本发明优选实施例的采用UE侧测量方式下虚拟小区构建和协作节点选择的信令交互流程图；
图9是根据本发明优选实施例的集中管理装置确定业务协作节点示例的流程图；
图10是根据本发明实施例的虚拟小区的构建装置的结构框图；
图11是根据本发明优选实施例的虚拟小区的构建装置的结构框图；
图12是根据本发明实施例的协作节点的选择装置的结构框图；
图13是根据本发明优选实施例的协作节点的选择装置的结构框图。
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发明。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。
图1是根据本发明实施例的虚拟小区的构建方法的流程图。如图1所示，该方法可以包括以下处理步骤：
步骤S102：接收多个邻近节点上报的SRS测量结果或UE上报的RS测量结果；
步骤S104：根据SRS测量结果或RS测量结果确定候选协作节点集合，并将候选协作节点集合上报至集中管理装置；
步骤S106：接收来自于集中管理装置的虚拟小区配置信息，并根据虚拟小区配置信息在多个协作节点以及UE之间构建虚拟小区，其中，多个协作节点是集中管理装置为所在区域的所有业务分别从各自的候选协作节点集合中选取的。
相关技术中，在分布式管理架构下虚拟小区构建与协作节点选择的判决指标单一，另外，多节点对于资源竞争产生的冲突和干扰的问题难以解决。采用如图1所示的方法，采用集中式的方式为业务选择相应的协作节点，以构建虚拟小区，由此解决了相关技术中在分布式管理架构下虚拟小区构建与协作节点选择的判决指标单一以及多节点对于资源竞争产生的冲突和干扰的问题，进而能够有效地提高资源利用率，更好地满足不同业务的需求。
优选地，在步骤S102中，接收多个邻近节点上报的SRS测量结果可以包括以下操作：
步骤S1：从集中管理装置请求获取UE的SRS配置信息；
步骤S2：向位于邻近节点列表中的多个邻近节点发送SRS配置信息，通知多个邻近节点进行SRS测量；
步骤S3：接收来自于多个邻近节点的SRS测量结果。
优选地，上述SRS配置信息是由集中管理装置根据预设干扰关系库中存储的信息确定的，其中，SRS配置信息可以包括但不限于以下至少之一：
(1)SRS时域资源信息；
(2)SRS频域资源信息；
(3)SRS码域资源信息。
在优选实施例中，集中管理装置在接收到来自于控制节点的请求后，为新接入的UE确定探测参考信号(Sounding Reference Signal，简称为SRS)配置信息，其中，该SRS配置信息可以包括时域、频域和码域的信息，并将SRS配置信息传送给控制节点；
集中管理装置可以根据干扰关系库里的信息确定的SRS时频码域资源，能够保证和区域内其他UE正交化；此处的区域是指指控制节点及其邻近节点列表中的所有节点覆盖区域。
优选地，在步骤S102中，接收UE上报的RS测量结果可以包括以下步骤：
步骤S4：将位于邻近节点列表中的多个邻近节点的RS配置信息发送至UE；
步骤S5：在UE执行RS测量后，接收来自于UE的RS测量结果。
在优选实施例中，控制节点通知邻近节点列表中的节点测量来自UE的SRS信号强度或质量，并将测量结果上报给控制节点。当然，控制节点也可以将邻近节点列表中的节点侧RS信息下发给UE，UE测量来自该列表中的节点RS强度或质量，然后再将测量结果上报给控制节点。
优选地，根据SRS测量结果或RS测量结果确定候选协作节点集合可以包括以下操作：
步骤S6：根据SRS测量结果或RS测量结果从多个邻近节点中选取信号强度或信号质量大于预设阈值的部分或全部节点；
步骤S7：通过部分或全部节点确定候选协作节点集合。
控制节点可以根据邻近节点或者UE侧上报测量结果，选择信号质量大于特定阈值的节点作为侯选节点，并将选择结果发送至集中管理装置。
优选地，在根据SRS测量结果或RS测量结果确定候选协作节点集合之后，还可以包括以下步骤：
步骤S8：根据全部业务中每项业务的服务质量QoS需求从候选协作节点集合中确定为该项业务服务的协作节点的最少数量。
优选地，在步骤S8中，确定为每项业务服务的协作节点的最少数量可以包括以下操作：
步骤S9：根据每项业务的QoS需求确定DTR；
步骤S10：根据SRS测量结果或RS测量结果估计SINR；
步骤S11：根据SINR确定MCS；
步骤S12：根据MCS、可用带宽以及DTR确定协作节点的最少数量。
在优选实施例中，控制节点可以根据用户的业务QoS需求确定该业务的协作节点数目L，并上报给集中管理装置，其优选实施过程如下：控制节点可以根据业务QoS需求(例如：GBR)确定业务速率要求DTR；再根据邻近节点或者UE侧上报的RS信号强度或质量估计不同协作节点下的信干噪比SINR，并且根据SINR确定相应传输编码格式MCS；最后，根据MCS格式和可用带宽BW，确定可以满足DTR要求的协作节点数目。
优选地，在步骤S106中，根据虚拟小区配置信息在多个协作节点之间构建虚拟小区可以包括以下操作：
步骤S13：采用预设系统消息将虚拟小区配置信息发送至UE；
步骤S14：按照虚拟小区配置信息中携带的与全部业务中每项业务对应的协作节点信息将虚拟小区配置信息发送至除自身以外的其他协作节点，其中，协作节点信息 是由集中管理装置根据候选协作节点集合和协作节点的最少数量结合候选协作节点集合中每个候选协作节点的负荷信息以及回传资源信息确定的；
步骤S15：在UE以及其他协作节点之间构建虚拟小区。
在优选实施例中，控制节点接收来自于集中管理装置的虚拟小区配置信息，其中，该虚拟小区配置信息可以包括但不限于：服务节点信息、虚拟小区ID、协作方式以及其它无线资源配置等信息，然后以系统消息的形式将虚拟小区配置信息发送给UE；同时将虚拟小区ID(用于层2虚拟化)等信息发送给其它协作节点，通知协作节点构建虚拟小区，为相应的业务提供数据传输的服务。
图2是根据本发明实施例的协作节点的选择方法的流程图。如图2所示，该方法可以包括以下处理步骤：
步骤S202：接收多个控制节点上报的候选协作节点集合，其中，候选协作节点集合是控制节点根据该控制节点的多个邻近节点上报的SRS测量结果或UE上报的RS测量结果确定的；
步骤S204：为当前所在区域内的所有业务中的每项业务从候选协作节点集合选取多个协作节点。
优选地，在步骤S202，接收控制节点上报的候选协作节点集合之后，还可以包括以下操作：
步骤S16：接收来自于控制节点的协作节点的最少数量，其中，协作节点的最少数量是控制节点根据每项业务的服务质量QoS需求从候选协作节点集合中确定的。
优选地，在步骤S204中，从候选协作节点集合选取多个协作节点可以包括以下步骤：
步骤S17：对全部业务按照每项业务的优先级由高到低进行排序；
步骤S18：按照业务优先级从高到低的顺序根据候选协作节点集合中每个候选协作节点的负荷信息以及回传资源信息选择满足每项业务的服务质量QoS需求的多个协作节点，其中，多个协作节点的数量大于或等于协作节点的最少数量。
在优选实施例中，集中管理器接收来自于控制节点的信息，为区域内所有业务确定对应的服务节点，并将结果传给控制节点；同时，集中管理器确定各业务的虚拟小 区ID，协作方式或MIMO模式，无线资源配置等信息，与服务节点信息一起传送给控制节点。
集中管理装置可以对当前区域内所有业务按照优先级进行排序，根据优先级顺序为各业务确定服务节点，其优选实施过程如下：选择优先级高的业务，判断候选节点的负荷状态和回传资源是否满足业务QoS需求，在候选节点中选择负荷最低和回传资源最多的满足QoS需求的L个节点作为该业务的服务节点。
在优选实施过程中，集中管理装置可以根据各业务服务节点分配状况更新节点负荷信息库，节点Backhaul信息库，干扰关系库的内容。
在优选实施过程中，集中管理装置接收来自于各节点的测量信息，例如：负荷信息，节点回传能力信息，参考信号强度等，更新节点负荷信息库，节点回传信息库以及干扰关系库。
下面将结合图3至图9所示的优选实施方式对上述优选实施过程作进一步的描述。
图3是根据本发明优选实施例的存在宏站覆盖场景下的虚拟小区构建场景示意图。如图3所示，在宏基站覆盖范围内有密集部署的Small Cell节点，各Small Cell节点通过有线或无线Backhaul连接到宏基站，宏基站作为和外部网络连接的节点，而集中管理装置(Concentrator)位于宏基站内。另外，可以采用控制面和业务面分离的方式，控制面信令的发送和接收均由宏基站来负责。
图4是根据本发明优选实施例的没有宏基站覆盖场景下的虚拟小区构建场景示意图。如图4所示，没有宏基站部署，采用密集部署的Small Cell进行覆盖。各个Small Cell节点通过有线或无线Backhaul连接到集中管理装置。集中管理装置可以作为与外部网络连接的节点，集中管理装置可以是功能强大的Small Cell节点，也可以是域管理器或者中心服务器。另外，可以采用控制面和业务面分离的方式，控制节点负责控制面信令的发送和/或接收。
图5是根据本发明优选实施例的虚拟小区构建和协作节点选择的装置的结构框图。如图5所示，虚拟小区构建和协作节点选择的装置可以包括：测量模块，位于控制节点和数据节点侧，用来进行参考信号(Reference Signal，简称为RS)测量和上报。候选节点选择模块，位于控制节点侧，用来根据RS测量结果选择侯选服务节点并上报给中心管理节点。管理数据库，位于集中管理装置，可以包括但不限于以下至少之一：干扰关系库、UE上下文信息库、节点负荷信息库以及节点回传网络(Backhaul)资源信息库。服务节点决策模块，位于集中管理装置，用来根据控制节点上报的候选 节点信息，以及节点负荷信息库和节点回传网络资源信息库的资源信息，为区域内所有业务确定服务节点。虚拟小区配置模块，位于集中管理装置，用来确定构建虚拟小区需要的其他配置信息，例如：虚拟小区ID、协作方式、无线资源配置等。
其中，数据节点侧内测量模块的结果可以通过空口或者有线连接传送至控制节点的候选节点选择模块，候选节点选择模块的输出结果可以直接或通过回传网络传送至服务节点决策模块，服务节点决策模块和虚拟小区配置模块的结果也可以直接或通过回传网络传送至控制节点侧，控制节点可以通过空口或者有线连接通知相应的数据节点构建虚拟小区。
图6是根据本发明优选实施例的虚拟小区构建和协作节点选择方法的流程图。如图6所示，该方法可以包括以下处理步骤：
步骤S602：集中管理装置在接收到来自于控制节点的请求消息后，为新接入的UE确定探测参考信号(Sounding Reference Signal，简称为SRS)配置信息，其中，该SRS配置信息可以包括但不限于：时域信息、频域信息和码域信息，并将SRS配置信息发送至控制节点。
在该优选实施例中，集中管理装置可以根据干扰关系库中存储的信息确定SRS时域、频域以及码域资源，以此确保与区域内的其他UE实现正交化。此处，区域是指控制节点及其邻近节点列表中的所有节点覆盖区域。
步骤S604：控制节点通知邻近节点列表中的节点，测量来自于UE的SRS信号强度或SRS信号质量，并将测量结果上报至控制节点。
在该优选实施例中，控制节点将邻近节点列表中的节点侧RS信息下发至UE，UE测量来自该列表中的节点RS强度或RS质量，然后再将测量结果上报至控制节点。
步骤S606：控制节点根据邻近节点或者UE侧上报的测量结果选择信号质量大于预设阈值的节点作为侯选节点，并将结果传输至集中管理装置。
在该优选实施例中，控制节点可以根据用户的业务QoS需求确定该业务的协作节点数量L，并上报至集中管理装置；具体方法为：控制节点可以根据业务QoS需求(例如：GBR)确定业务速率要求DTR；再根据邻近节点或者UE侧上报的RS信号强度或RS信号质量估计不同协作节点下的信干噪比SINR，同时确定相应传输编码格式MCS；最后，根据MCS格式和可用带宽BW，确定可以满足DTR要求的协作节点数目。
步骤S608：集中管理装置接收控制节点上报的信息，为区域内所有业务确定对应的服务节点，并将结果传输至控制节点；同时，集中管理装置确定各项业务的虚拟小区ID、协作方式或MIMO模式、无线资源配置等信息，与服务节点信息一起传送至控制节点。
在该优选实施例中，集中管理装置对当前区域内所有业务按照优先级进行排序，根据优先级顺序为各项业务确定服务节点。具体为：选择优先级高的业务，判断候选节点的负荷状态和回传资源是否满足业务QoS需求，在候选节点中选择负荷最低和回传资源最多的满足QoS需求的L个节点作为该业务的服务节点。
优选地，集中管理装置根据各项业务服务节点的分配状况，更新节点负荷信息库、节点Backhaul信息库以及干扰关系库的内容。
优选地，集中管理装置接收来自于各个节点的测量信息，例如：负荷信息、节点回传能力信息、参考信号强度等，更新节点负荷信息库、节点回传信息库、干扰关系库。
步骤S610：控制节点接收来自于集中管理装置的虚拟小区配置信息，其中，该虚拟小区配置信息可以包括但不限于：服务节点、虚拟小区ID、协作方式以及其它无线资源配置等信息，以系统消息的形式将虚拟小区配置信息发送至UE；同时，将虚拟小区ID(用于层2虚拟化)等信息发送至其它协作节点，以通知协作节点构建虚拟小区，为相应的业务提供数据传输的服务。
在优选实施例中，虚拟小区的构建和协作节点选择存在以下三种情形：
情形一、用户初始接入；
情形二、新的业务接入；
情形三、用户发生切换。
图7是根据本发明优选实施例的采用节点侧测量方式下虚拟小区构建和协作节点选择的信令交互流程图。如图7所示，当用户初始接入时，需要与控制节点之间执行随机接入过程。
对于采用网络侧测量的方案而言，在随机接入过程中，控制节点需要向集中管理装置请求UE侧进行SRS配置。集中管理装置负责区域内所有UE的SRS时域、频域和码域的无线资源配置，结合集中管理装置内的干扰关系库，保证该UE的SRS无线 资源与其它UE正交，避免不同UE间的导频污染。集中管理装置在配置完成SRS资源后将信息传输至控制节点，再由控制节点发送至UE；同时，将该UE的SRS配置发送至邻近节点列表中的节点，通知节点进行SRS测量。每个控制节点都会维护一个邻近节点列表，通过网络侦听或者UE测量上报的结果来建立和周期性更新。邻近节点将SRS测量结果(例如：RSRP或RSRQ)上报至控制节点。
图8是根据本发明优选实施例的采用UE侧测量方式下虚拟小区构建和协作节点选择的信令交互流程图。如图8所示，对于UE侧测量而言，在随机接入过程中不需要提前进行SRS配置。控制节点将邻近节点的RS配置信息发送至UE，UE在执行RS测量后，将来自于邻近节点的RSRP或RSRQ测量信息上报至控制节点。
对于新的业务接入或者切换过程中的虚拟小区构建和协作节点选择，则不需要执行随机接入过程和SRS配置过程。
控制节点在接收到邻近节点或者UE侧上报的测量结果之后，执行候选协作节点选择。候选节点的选择可以按照以下方式进行：
查找所有节点测量结果中的最大值，在将所有节点测量结果与最大值进行比较后，其差值和预设阈值Threshold进行比较，如果低于该预设阈值的节点则可以作为备选节点；假设备选节点的数目为M个；上述Threshold可由高层配置，例如：3dB。
当估计最优节点数目时，控制节点首先选择RSRP或RSRQ最好的节点，估计信干噪比SINR及对应的MCS格式，其中，SINR和MCS格式的对应关系由预先设置的CQI-MCS映射表格得到。根据MCS格式和带宽估计数据传输速率DTR按照如下公式进行计算：
DTR＝MCS*RB*α；
其中，RB为可用带宽内MCS对应的资源块数目，α为加权系数。判断估计得到的DTR是否满足该业务的QoS需求；若是，则该业务的备用节点数目L＝1。若不满足QoS需求，增加次好的节点，重新估计SINR及MCS格式，再次得到DTR，然后再次比较DTR和QoS需求，重复上述过程直至满足业务QoS需求位置，最终得到该业务的节点数目L。
将接收到的所有节点的RSRP值按照从大到小的顺序依次排列，序号为：RSRP1，RSRP2，…，RSRPM，由RSRP估计SINR的方法可以采用以下公式：
Figure PCTCN2015070935-appb-000001
在该公式中的RSRP均为线性值。
假设所有节点中RSRQ最大的两个表示为RSRQ1和RSRQ2(这里RSRQ均为线性值)，则两个节点协作发送数据时的SINR可以按照如下公式进行估计：
Figure PCTCN2015070935-appb-000002
依次类推，可以得到L个节点协作后的SINR估计值。
图9是根据本发明优选实施例的集中管理装置确定业务协作节点示例的流程图。如图9所示，集中管理装置在接收到控制节点的候选节点信息以及节点数目之后，采用集中选择调度的方式为各个业务确定协作节点。集中管理装置将区域内所有业务按照业务优先级顺序排序，选取优先级最高的用户，从候选节点中选择负荷最低和回传资源最多的L个节点分配给该用户；如果不存在满足条件的L个资源，例如：大多数节点的负荷均已较重或者回传资源不足，则可以减少协作节点个数，查找满足负荷和回传开销条件的节点；如果没有一个节点满足条件，则不为该业务分配服务节点，直接将该业务从列表中删除，依次循环，直至所有业务分配完毕。
在切换过程中，同时还可以结合上下文信息，根据上下文来选择最好的协作节点，由此可以减少切换次数，提高回传资源利用率。
集中管理装置需要维护以下四个数据库：干扰关系库、UE上下文信息库、节点Backhaul信息库以及节点负荷信息库。这些信息库的建立和更新可以通过不同节点的周期性和事件性上报测量信息来维护。
最后，集中管理装置将业务的协作节点分配结果以及其他虚拟小区配置，例如：虚拟小区ID(用于L2虚拟化)、协作方式(或MIMO模式)以及其他无线资源配置信息等发送至控制节点，控制节点以系统消息的形式将虚拟小区配置信息发送至UE；同时将虚拟小区ID(用于L2虚拟化)等信息发送至其它协作节点，通知协作节点构建虚拟小区，为用户的不同业务提供服务。
图10是根据本发明实施例的虚拟小区的构建装置的结构框图。如图10所示，该虚拟小区的构建装置可以包括：第一接收模块10，设置为接收多个邻近节点上报的SRS测量结果或UE上报的RS测量结果；第一确定模块20，设置为根据SRS测量结果或 RS测量结果确定候选协作节点集合，并将候选协作节点集合上报至集中管理装置；构建模块30，设置为接收来自于集中管理装置的虚拟小区配置信息，并根据虚拟小区配置信息在多个协作节点以及UE之间构建虚拟小区，其中，多个协作节点是集中管理装置为所在区域的所有业务分别从各自的候选协作节点集合中选取的。
采用如图10所示的装置，解决了相关技术中在分布式管理架构下虚拟小区构建与协作节点选择的判决指标单一的问题，进而能够有效地提高资源利用率，更好地满足不同业务的需求。
优选地，如图11所示，第一接收模块10可以包括：获取单元100，设置为从集中管理装置请求获取UE的SRS配置信息；第一发送单元102，设置为向位于邻近节点列表中的多个邻近节点发送SRS配置信息，通知多个邻近节点进行SRS测量；第一接收单元104，设置为接收来自于多个邻近节点的SRS测量结果。
优选地，上述SRS配置信息是由集中管理装置根据预设干扰关系库中存储的信息确定的，其中，SRS配置信息可以包括但不限于以下至少之一：
(1)SRS时域资源信息；
(2)SRS频域资源信息；
(3)SRS码域资源信息。
优选地，如图11所示，第一接收模块10可以包括：第二发送单元106，设置为将位于邻近节点列表中的多个邻近节点的RS配置信息发送至UE；第二接收单元108，设置为在UE执行RS测量后，接收来自于UE的RS测量结果。
优选地，如图11所示，第一确定模块20可以包括：选取单元200，设置为根据SRS测量结果或RS测量结果从多个邻近节点中选取信号强度或信号质量大于预设阈值的部分或全部节点；第一确定单元202，设置为通过部分或全部节点确定候选协作节点集合。
优选地，如图11所示，上述装置还可以包括：第二确定模块40，设置为根据全部业务中每项业务的服务质量QoS需求从候选协作节点集合中确定为该项业务服务的协作节点的最少数量。
优选地，如图11所示，第二确定模块40可以包括：第二确定单元400，设置为根据每项业务的QoS需求确定数据传输速率DTR；估计单元402，设置为根据SRS 测量结果或RS测量结果估计信号与干扰加噪声比SINR；第三确定单元404，设置为根据SINR确定调制与编码策略MCS；第四确定单元406，设置为根据MCS、可用带宽以及DTR确定协作节点的最少数量。
优选地，如图11所示，构建模块30可以包括：第三发送单元300，设置为采用预设系统消息将虚拟小区配置信息发送至UE；第四发送单元302，设置为按照虚拟小区配置信息中携带的与全部业务中每项业务对应的协作节点信息将虚拟小区配置信息发送至除自身以外的其他协作节点，其中，协作节点信息是由集中管理装置根据候选协作节点集合和协作节点的最少数量结合候选协作节点集合中每个候选协作节点的负荷信息以及回传资源信息确定的；构建单元304，设置为在UE以及其他协作节点之间构建虚拟小区。
图12是根据本发明实施例的协作节点的选择装置的结构框图。如图12所示，该协作节点的选择装置可以包括：第一接收模块50，设置为接收控制节点上报的候选协作节点集合，其中，候选协作节点集合是控制节点根据该控制节点的多个邻近节点上报的探测参考信号SRS测量结果或用户设备UE上报的参考信号RS测量结果确定的；选取模块60，设置为为当前所在区域内的所有业务分别从各自的候选协作节点集合选取多个协作节点。
优选地，如图13所示，上述装置还可以包括：第二接收模块70，设置为接收来自于控制节点的协作节点的最少数量，其中，协作节点的最少数量是控制节点根据每项业务的服务质量QoS需求从候选协作节点集合中确定的。
优选地，如图13所示，选取模块60可以包括：排序单元600，设置为对全部业务按照每项业务的优先级由高到低进行排序；选取单元602，设置为按照业务优先级从高到低的顺序根据候选协作节点集合中每个候选协作节点的负荷信息以及回传资源信息选择满足每项业务的服务质量QoS需求的多个协作节点，其中，多个协作节点的数量大于或等于协作节点的最少数量。
从以上的描述中，可以看出，上述实施例实现了如下技术效果(需要说明的是这些效果是某些优选实施例可以达到的效果)：采用本发明实施例所提供的技术方案，采用集中式的方式为业务选择相应的协作节点，以构建虚拟小区，进而能够有效地避免分布式架构下协作节点之间的无线资源和回传资源的干扰和冲突问题，有效地提升了虚拟无线资源和回传资源的利用率，提升网络性能。另外，根据不同业务的QoS需求，可以为同一用户的不同业务选择不同的协作节点，从而能够有效地提高资源利用率，更好地满足不同业务的需求。
显然，本领域的技术人员应该明白，上述的本发明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，本发明不限制于任何特定的硬件和软件结合。
以上所述仅为本发明的优选实施例而已，并不用于限制本发明，对于本领域的技术人员来说，本发明可以有各种更改和变化。凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。
工业实用性
如上所述，本发明实施例提供的一种虚拟小区的构建、协作节点的选择方法及装置具有以下有益效果：能够有效地避免分布式架构下协作节点之间的无线资源和回传资源的干扰和冲突，提升虚拟无线资源和回传资源的利用率以及网络性能。另外，根据不同业务的QoS需求，还可以为同一用户的不同业务选择不同的协作节点，从而能够有效地提高资源利用率，更好地满足不同业务的需求。

Claims (22)

  1. 一种虚拟小区的构建方法，包括：
    接收多个邻近节点上报的探测参考信号SRS测量结果或用户设备UE上报的参考信号RS测量结果；
    根据所述SRS测量结果或所述RS测量结果确定候选协作节点集合，并将所述候选协作节点集合上报至集中管理装置；
    接收来自于所述集中管理装置的虚拟小区配置信息，并根据所述虚拟小区配置信息在多个协作节点以及所述UE之间构建虚拟小区，其中，所述多个协作节点是所述集中管理装置为所在区域的所有业务分别从各自的所述候选协作节点集合中选取的。
  2. 根据权利要求1所述的方法，其中，接收所述多个邻近节点上报的所述SRS测量结果包括：
    从所述集中管理装置请求获取所述UE的SRS配置信息；
    向位于邻近节点列表中的所述多个邻近节点发送所述SRS配置信息，通知所述多个邻近节点进行SRS测量；
    接收来自于所述多个邻近节点的所述SRS测量结果。
  3. 根据权利要求2所述的方法，其中，所述SRS配置信息是由所述集中管理装置根据预设干扰关系库中存储的信息确定的，其中，所述SRS配置信息包括以下至少之一：
    SRS时域资源信息、SRS频域资源信息、SRS码域资源信息。
  4. 根据权利要求1所述的方法，其中，接收所述UE上报的所述RS测量结果包括：
    将位于邻近节点列表中的所述多个邻近节点的RS配置信息发送至所述UE；
    在所述UE执行RS测量后，接收来自于所述UE的所述RS测量结果。
  5. 根据权利要求1所述的方法，其中，根据所述SRS测量结果或所述RS测量结果确定所述候选协作节点集合包括：
    根据所述SRS测量结果或所述RS测量结果从所述多个邻近节点中选取信号强度或信号质量大于预设阈值的部分或全部节点；
    通过所述部分或全部节点确定所述候选协作节点集合。
  6. 根据权利要求5所述的方法，其中，在根据所述SRS测量结果或所述RS测量结果确定所述候选协作节点集合之后，还包括：
    根据所述全部业务中每项业务的服务质量QoS需求从所述候选协作节点集合中确定为该项业务服务的协作节点的最少数量。
  7. 根据权利要求6所述的方法，其中，确定为每项业务服务的所述协作节点的最少数量包括：
    根据每项业务的所述QoS需求确定数据传输速率DTR；
    根据所述SRS测量结果或所述RS测量结果估计信号与干扰加噪声比SINR；
    根据所述SINR确定调制与编码策略MCS；
    根据所述MCS、可用带宽以及所述DTR确定所述协作节点的最少数量。
  8. 根据权利要求7所述的方法，其中，根据所述虚拟小区配置信息在多个协作节点之间构建虚拟小区包括：
    采用系统消息将所述虚拟小区配置信息发送至所述UE；
    按照所述虚拟小区配置信息中携带的与所述全部业务中每项业务对应的协作节点信息将所述虚拟小区配置信息发送至除自身以外的其他协作节点，其中，所述协作节点信息是由所述集中管理装置根据所述候选协作节点集合和所述协作节点的最少数量结合所述候选协作节点集合中每个候选协作节点的负荷信息以及回传资源信息确定的；
    在所述UE以及所述其他协作节点之间构建虚拟小区。
  9. 一种协作节点的选择方法，包括：
    接收多个控制节点上报的候选协作节点集合，其中，所述候选协作节点集合是所述控制节点根据该控制节点的多个邻近节点上报的探测参考信号SRS测量结果或用户设备UE上报的参考信号RS测量结果确定的；
    为当前所在区域内的所有业务中的每项业务从所述候选协作节点集合选取多个协作节点。
  10. 根据权利要求9所述的方法，其中，在接收所述控制节点上报的所述候选协作节点集合之后，还包括：
    接收来自于所述控制节点的协作节点的最少数量，其中，所述协作节点的最少数量是所述控制节点根据每项业务的服务质量QoS需求从所述候选协作节点集合中确定的。
  11. 根据权利要求9或10所述的方法，其中，从所述候选协作节点集合选取所述多个协作节点包括：
    对所述全部业务按照每项业务的优先级由高到低进行排序；
    按照业务优先级从高到低的顺序根据所述候选协作节点集合中每个候选协作节点的负荷信息以及回传资源信息选择满足每项业务的服务质量QoS需求的所述多个协作节点，其中，所述多个协作节点的数量大于或等于所述协作节点的最少数量。
  12. 一种虚拟小区的构建装置，包括：
    第一接收模块，设置为接收多个邻近节点上报的探测参考信号SRS测量结果或用户设备UE上报的参考信号RS测量结果；
    第一确定模块，设置为根据所述SRS测量结果或所述RS测量结果确定候选协作节点集合，并将所述候选协作节点集合上报至集中管理装置；
    构建模块，设置为接收来自于所述集中管理装置的虚拟小区配置信息，并根据所述虚拟小区配置信息在多个协作节点以及所述UE之间构建虚拟小区，其中，所述多个协作节点是所述集中管理装置为所在区域的所有业务分别从各自的所述候选协作节点集合中选取的。
  13. 根据权利要求12所述的装置，其中，所述第一接收模块包括：
    获取单元，设置为从所述集中管理装置请求获取所述UE的SRS配置信息；
    第一发送单元，设置为向位于邻近节点列表中的所述多个邻近节点发送所述SRS配置信息，通知所述多个邻近节点进行SRS测量；
    第一接收单元，设置为接收来自于所述多个邻近节点的所述SRS测量结果。
  14. 根据权利要求13所述的装置，其中，所述SRS配置信息是由所述集中管理装置根据预设干扰关系库中存储的信息确定的，其中，所述SRS配置信息包括以下至少之一：
    SRS时域资源信息、SRS频域资源信息、SRS码域资源信息。
  15. 根据权利要求12所述的装置，其中，所述第一接收模块包括：
    第二发送单元，设置为将位于邻近节点列表中的所述多个邻近节点的RS配置信息发送至所述UE；
    第二接收单元，设置为在所述UE执行RS测量后，接收来自于所述UE的所述RS测量结果。
  16. 根据权利要求12所述的装置，其中，所述第一确定模块包括：
    选取单元，设置为根据所述SRS测量结果或所述RS测量结果从所述多个邻近节点中选取信号强度或信号质量大于预设阈值的部分或全部节点；
    第一确定单元，设置为通过所述部分或全部节点确定所述候选协作节点集合。
  17. 根据权利要求16所述的装置，其中，所述装置还包括：
    第二确定模块，设置为根据所述全部业务中每项业务的服务质量QoS需求从所述候选协作节点集合中确定为该项业务服务的协作节点的最少数量。
  18. 根据权利要求17所述的装置，其中，所述第二确定模块包括：
    第二确定单元，设置为根据每项业务的所述QoS需求确定数据传输速率DTR；
    估计单元，设置为根据所述SRS测量结果或所述RS测量结果估计信号与干扰加噪声比SINR；
    第三确定单元，设置为根据所述SINR确定调制与编码策略MCS；
    第四确定单元，设置为根据所述MCS、可用带宽以及所述DTR确定所述协作节点的最少数量。
  19. 根据权利要求18所述的装置，其中，所述构建模块包括：
    第三发送单元，设置为采用预设系统消息将所述虚拟小区配置信息发送至所述UE；
    第四发送单元，设置为按照所述虚拟小区配置信息中携带的与所述全部业务中每项业务对应的协作节点信息将所述虚拟小区配置信息发送至除自身以外的其他协作节点，其中，所述协作节点信息是由所述集中管理装置根据所述候选协作节点集合和所述协作节点的最少数量结合所述候选协作节点集合中每个候选协作节点的负荷信息以及回传资源信息确定的；
    构建单元，设置为在所述UE以及所述其他协作节点之间构建虚拟小区。
  20. 一种协作节点的选择装置，包括：
    第一接收模块，设置为接收控制节点上报的候选协作节点集合，其中，所述候选协作节点集合是所述控制节点根据该控制节点的多个邻近节点上报的探测参考信号SRS测量结果或用户设备UE上报的参考信号RS测量结果确定的；
    选取模块，设置为为当前所在区域内的所有业务分别从各自的所述候选协作节点集合选取多个协作节点。
  21. 根据权利要求20所述的装置，其中，所述装置还包括：
    第二接收模块，设置为接收来自于所述控制节点的协作节点的最少数量，其中，所述协作节点的最少数量是所述控制节点根据每项业务的服务质量QoS需求从所述候选协作节点集合中确定的。
  22. 根据权利要求20或21所述的装置，其中，所述选取模块包括：
    排序单元，设置为对所述全部业务按照每项业务的优先级由高到低进行排序；
    选取单元，设置为按照业务优先级从高到低的顺序根据所述候选协作节点集合中每个候选协作节点的负荷信息以及回传资源信息选择满足每项业务的服务质量QoS需求的所述多个协作节点，其中，所述多个协作节点的数量大于或等于协作节点的最少数量。
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