WO2017101458A1 - 实现资源分配的方法和系统，及集中控制器和基站 - Google Patents

实现资源分配的方法和系统，及集中控制器和基站 Download PDF

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WO2017101458A1
WO2017101458A1 PCT/CN2016/092854 CN2016092854W WO2017101458A1 WO 2017101458 A1 WO2017101458 A1 WO 2017101458A1 CN 2016092854 W CN2016092854 W CN 2016092854W WO 2017101458 A1 WO2017101458 A1 WO 2017101458A1
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Prior art keywords
comp
resource
cell
allocation
ues
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PCT/CN2016/092854
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English (en)
French (fr)
Inventor
张丽
李楠
胡留军
任震
韩玮
向际鹰
耿鹏
邱刚
李儒岳
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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
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
    • H04W72/542—Allocation or scheduling criteria for wireless resources based on quality criteria using measured or perceived quality
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/022—Site diversity; Macro-diversity
    • H04B7/024—Co-operative use of antennas of several sites, e.g. in co-ordinated multipoint or co-operative multiple-input multiple-output [MIMO] systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
    • H04W72/543—Allocation or scheduling criteria for wireless resources based on quality criteria based on requested quality, e.g. QoS
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/56—Allocation or scheduling criteria for wireless resources based on priority criteria

Definitions

  • Embodiments of the present invention relate to, but are not limited to, coordinated multi-point transmission (CoMP) technology, and in particular, a CoMP-based method and system for realizing resource allocation, and a centralized controller and a base station.
  • CoMP coordinated multi-point transmission
  • LTE Long Term Evolution
  • LTE-A Long Term Evolution-Advanced
  • HetNet Heterogeneous Network
  • Dense cells can increase the frequency reuse rate, but also bring very serious inter-cell interference.
  • CoMP Coordinated Multiple Points
  • they are subject to strong interference from multiple neighboring cells at the same time, resulting in very low data rate and spectrum efficiency of CoMP users. difference.
  • JT joint transmission
  • CS Coordinated Schedule
  • a distributed cell resource coordination and interference avoidance scheme is usually adopted. That is, each cell independently performs scheduling and resource allocation for UEs within the coverage of the cell, that is, parallel scheduling and resource allocation among the cells.
  • the coordination and cooperation between the multiple interference source cells of the CoMP user cannot be performed effectively, and the resource coordination between CoMP users in different cells may collide, so that the resource allocation of the CoMP users cannot be completely orthogonal. Therefore, the performance gain of CoMP users is limited.
  • the CS since the CS usually adopts a distributed scheme, there is no possibility that a plurality of interference source cells of the CoMP user can be performed. Effective coordination and cooperation, and each cell disables a lot of wireless resources in order to cooperate with the CoMP users of the interfering cell, which will cause the system resource utilization to be seriously degraded, affecting the overall throughput and performance of the system.
  • the embodiments of the present invention provide a method and a system for implementing resource allocation, and a centralized controller and a base station, which can avoid interference between CoMP UEs between cells and improve throughput of CoMP UEs.
  • an embodiment of the present invention provides a method for implementing resource allocation, including:
  • the radio resources are pre-allocated for the CoMP UEs of the respective cells according to the number of radio resource blocks required by the CoMP UEs of the respective cells.
  • the related information includes:
  • Cooperative cell information reflecting which neighboring areas of the CoMP UE are interfered with and the degree of interference from neighboring area interference.
  • the determining the number of radio resource blocks required by the CoMP UE of each cell includes:
  • the CoMP UE is an initial resource allocation, calculate the required number of resource blocks according to the target throughput and channel quality information in the related information of the obtained CoMP UE;
  • the CoMP UE has allocated resources in a previous period, according to the obtained target throughput of the CoMP UE, the actual data rate of the CoMP UE, the CQI of the CoMP UE, and the resource utilization of the CoMP UE in the previous period, and the previous one.
  • the resource pre-allocation result of the period is calculated by the resource requirement algorithm to calculate the number of the resource blocks required by the CoMP UE in the current period.
  • the determining the priority of the CoMP UE of each cell includes:
  • the CoMP UE is prioritized by a prioritization algorithm.
  • the CoMP UE resource is pre-allocated with a physical resource block PRB or pre-allocated with a resource block group RBG as granularity.
  • the method further includes:
  • the interference level IL of each common resource is calculated in units of RBG; the priority of each RBG is determined according to the calculated interference level.
  • the determining the priority of each RBG includes:
  • the interference level of each RBG resource needs and the number of cooperating weighted average to calculate priority values of the RBG PRI RGB; RBG sorted according to the calculated priority values PRI RGB; or
  • an RBG that satisfies a preset interference level condition is selected; in the selected RBG, priority is sorted according to the number of resources that the coordinated cell needs to cooperate.
  • the pre-allocating radio resources for the CoMP UEs of each cell includes:
  • the resource location of the coordinated cell of the CoMP UE is an ordinary resource, it is set as an alternative resource for circumventing the coordinated resource of the neighboring cell CoMP UE to prohibit the coordinated cell from using the resource.
  • the method further includes: each cell scheduling and resource allocation of the CoMP UE in the resource pre-allocation result;
  • the resource allocation result of the CoMP UE is sent to each coordinated cell of the CoMP UE, and according to the CoMP UE resource allocation result from the coordinated cell, the cell is adjusted according to the CoMP UE resource allocation situation of the current cell and the resource allocation of the CoMP UE of the coordinated cell.
  • Resource type to obtain an adjusted resource bitmap
  • the scheduling and resource allocation for the CoMP UE includes:
  • the resource pre-allocation result of the CoMP UE is used as a range of base station eNB scheduling and resource allocation, and the eNB allocates resources for the CoMP UE as needed in the actual scheduling process.
  • the adjusting the resource type of the local cell includes:
  • the CoMP UE resource that is not occupied by the local cell is adjusted to be a common resource that can be allocated to the non-CoMP UE; the resource that is not occupied by the CoMP UE is not used by the cell, and if the cell is an alternative resource, the resource is used. Adjust to a common resource that can be allocated to non-CoMP UEs.
  • the embodiment of the present invention further provides a system for implementing resource allocation, which at least includes a centralized controller, configured to acquire related information of a coordinated multi-point transmission CoMP user terminal UE of each cell, and determine a CoMP UE of each cell.
  • a system for implementing resource allocation which at least includes a centralized controller, configured to acquire related information of a coordinated multi-point transmission CoMP user terminal UE of each cell, and determine a CoMP UE of each cell.
  • the radio resources are pre-allocated for the CoMP UEs of the respective cells according to the number of radio resource blocks required by the CoMP UEs of the respective cells.
  • the centralized controller is further configured to: send a CoMP UE pre-allocated radio resource result of each cell to each eNB;
  • the eNB is configured to: each cell performs scheduling and resource allocation on the CoMP UE in the resource pre-allocation result;
  • the resource allocation result of the CoMP UE is sent to each coordinated cell of the CoMP UE, and according to the CoMP UE resource allocation result from the coordinated cell, the cell is adjusted according to the CoMP UE resource allocation situation of the current cell and the resource allocation of the CoMP UE of the coordinated cell.
  • Resource type to obtain an adjusted resource bitmap
  • the centralized controller at least includes an obtaining module, a processing module, and a pre-allocation module; wherein
  • a first acquiring module configured to acquire related information of a CoMP UE of each cell
  • the first processing module is configured to determine, according to the obtained QoS satisfaction, the CQI, the actual data rate of the CoMP UE, and the QCI of the service, the obtained radio resource block of the CoMP UE of each cell.
  • the pre-allocation module is configured to pre-allocate radio resources for the CoMP UEs of the respective cells according to the number of radio resource blocks required by the CoMP UEs of the respective cells according to the priority of the CoMP UEs of the respective cells.
  • the eNB includes at least: a second acquiring module, a second processing module, a resource adjusting module, and a scheduling module, where
  • a second acquiring module configured to acquire a resource pre-allocation result of the CoMP UE of the cell to which the cell belongs;
  • the second processing module is configured to perform scheduling and resource allocation on the CoMP UE in the resource pre-allocation result; and send the resource allocation result of the CoMP UE to each coordinated cell of the CoMP UE;
  • the resource adjustment module is configured to adjust the resource type of the cell according to the CoMP UE resource allocation result of the cell and the resource allocation of the coordinated cell CoMP UE according to the CoMP UE resource allocation result from the coordinated cell, thereby obtaining the adjusted resource bitmap. ;
  • the scheduling module is configured to perform scheduling and resource allocation on the non-CoMP UE according to the adjusted resource bitmap and the data volume and channel quality of the non-CoMP UE.
  • the embodiment of the present invention further provides a centralized controller, including at least an acquiring module, a processing module, and a pre-allocation module;
  • a first acquiring module configured to acquire related information of a CoMP UE of each cell
  • the first processing module is configured to determine, according to the obtained information about the CoMP UE of each cell, the number of radio resource blocks required by the CoMP UE of each cell and the priority of the CoMP UE of each cell;
  • the pre-allocation module is configured to pre-allocate radio resources for the CoMP UEs of the respective cells according to the number of radio resource blocks required by the CoMP UEs of the respective cells according to the priority of the CoMP UEs of the respective cells.
  • the first processing module is specifically configured to:
  • the CoMP UE When the CoMP UE is the initial resource allocation, calculate the required number of resource blocks according to the target throughput and channel quality information in the related information of the obtained CoMP UE;
  • the CoMP UE When the CoMP UE has allocated resources in a previous period, according to the obtained target throughput of the CoMP UE, the actual data rate of the CoMP UE, the CQI of the CoMP UE, and the resource utilization of the CoMP UE in the previous period, and a resource pre-allocation result of a period, and calculating, by using a resource requirement algorithm, the number of the resource blocks required by the CoMP UE in the current period;
  • the CoMP UE is prioritized by a prioritization algorithm.
  • the pre-allocation module is specifically configured to:
  • the resource location of the coordinated cell of the CoMP UE is an ordinary resource, it is set as an alternative resource for circumventing the coordinated resource of the neighboring cell CoMP UE to prohibit the coordinated cell from using the resource.
  • the embodiment of the present invention further provides a base station, including at least: a second acquiring module, a second processing module, a resource adjusting module, and a scheduling module;
  • a second acquiring module configured to acquire a resource pre-allocation node of a CoMP UE of a cell to which the cell belongs fruit;
  • the second processing module is configured to perform scheduling and resource allocation on the CoMP UE in the resource pre-allocation result; and send the resource allocation result of the CoMP UE to each coordinated cell of the CoMP UE;
  • the resource adjustment module is configured to adjust the resource type of the cell according to the CoMP UE resource allocation result of the cell and the resource allocation of the coordinated cell CoMP UE according to the CoMP UE resource allocation result from the coordinated cell, thereby obtaining the adjusted resource bitmap. ;
  • the scheduling module is configured to perform scheduling and resource allocation on the non-CoMP UE according to the adjusted resource bitmap and the data volume and channel quality of the non-CoMP UE.
  • the second processing module is specifically configured to:
  • the resource pre-allocation result of the CoMP UE is used as a range of scheduling and resource allocation, and the CoMP UE allocates resources on demand; and the resource allocation result of the CoMP UE is sent to each coordinated cell of the CoMP UE.
  • the resource adjustment module is specifically configured to:
  • the CoMP UE resource that is not occupied by the current cell is adjusted to be a common resource that can be allocated to the non-CoMP UE; if the resource is not occupied by the CoMP UE, the resource is adjusted to A common resource that can be allocated to non-CoMP UEs.
  • an embodiment of the present invention further provides a computer readable storage medium storing computer executable instructions for performing the method for realizing resource allocation according to any of the above.
  • the technical solution of the present application includes acquiring related information of a CoMP UE of each cell, and determining a number of radio resource blocks required by a CoMP UE of each cell and a priority of a CoMP UE of each cell; and a priority of the CoMP UE according to each cell is high.
  • the radio resources of the CoMP UEs of the respective cells are pre-allocated according to the number of radio resource blocks required by the CoMP UEs of the respective cells.
  • the technical solution for implementing resource allocation according to the embodiment of the present invention by performing resource pre-allocation according to the priority of the CoMP UE of each cell, avoids interference between CoMP UEs between cells, and improves throughput of CoMP UEs. the amount.
  • the resource pre-allocation of the embodiment of the present invention is performed for the CoMP UE according to the priority of the resource, and the resource with a high priority is first allocated to the CoMP UE, and the allocation is ensured.
  • CoMP UE resources have little or no interference.
  • FIG. 1 is a flowchart of a method for implementing resource allocation according to an embodiment of the present invention
  • FIG. 2 is a schematic diagram of interaction of a system for implementing resource allocation according to an embodiment of the present invention
  • 3 is a schematic diagram of classification of radio resources of a system bandwidth according to an embodiment of the present invention.
  • FIG. 4 is a schematic structural diagram of a centralized controller according to an embodiment of the present invention.
  • FIG. 5 is a schematic structural diagram of a base station according to an embodiment of the present invention.
  • FIG. 1 is a flowchart of a method for implementing resource allocation according to an embodiment of the present invention. As shown in FIG. 1, the method includes:
  • Step 100 Acquire related information of CoMP UEs of each cell, and determine the number of radio resource blocks required by the CoMP UEs of each cell and the priority of CoMP UEs of each cell.
  • FIG. 2 is a schematic diagram of interaction of a system for implementing resource allocation according to an embodiment of the present invention.
  • the system of the present invention includes a centralized controller and a plurality of eNBs under its jurisdiction.
  • a thick solid arrow indicates that the eNB sends a CoMP UE to the centralized controller.
  • the information, the thick arrow line indicates that the centralized controller sends the cell resource pre-allocation result information to each eNB, and the solid arrow line indicates the actual scheduling information of the CoMP UEs that the eNBs mutually interact with.
  • the wireless resources of the entire system bandwidth are divided into three types, as shown in Figure 3.
  • the class is a CoMP UE resource, which is a resource used for pre-allocation to a cell CoMP UE; the other is an alternative resource, which is used to circumvent coordinated resources for interference of a neighboring cell CoMP UE, and the eNB does not send any data on the candidate resource.
  • the third type is a common resource, which is a resource that is pre-allocated to a cell non-CoMP UE.
  • the resource pre-allocation of the embodiment of the present invention may be implemented by a centralized controller.
  • the resource pre-allocation may perform periodic resource pre-allocation with a period T, or may perform resource pre-allocation with a non-period.
  • the resource pre-allocation process is a relatively slow process.
  • the embodiment of the present invention takes the granularity of resource pre-allocation as the period T, but the present invention is not limited to periodic resource pre-allocation, wherein the period T is a specific transmission time interval (TTI) (usually 1 ms).
  • TTI transmission time interval
  • a large value, for example, the period T can be taken as 20ms, 50ms or 100ms.
  • each cell reports the related information of the CoMP UE to the centralized controller, and the obtained information about the CoMP UE reported by each cell includes but is not limited to the following information:
  • CQI Channel Quality Indicator
  • the QoS satisfaction of the CoMP UE is used to reflect the QoS satisfaction of the CoMP UE in the period T.
  • Co-cell information of the CoMP UE which is used to reflect the interference of the neighboring area and the interference of the neighboring area.
  • determining the number of radio resource blocks required by the CoMP UEs of each cell includes: determining, by using a resource requirement algorithm, a quantity of resources required by a CoMP UE of each cell; wherein, according to whether the CoMP UE is an initial allocation, determining the CoMP UE The resource demand algorithm for the number of radio resource blocks is different:
  • the required number of resource blocks is calculated according to the target throughput and channel quality information of the CoMP UE.
  • the CoMP UE If the CoMP UE has allocated resources in a previous period, it needs to be based on the obtained CoMP UE related information, that is, the target throughput of the CoMP UE, the actual data rate of the CoMP UE, the CQI of the CoMP UE, and the CoMP of the previous period.
  • the resource utilization information of the UE, and the resource pre-allocation result of the previous cycle, the resource requirement algorithm is used to calculate the number of resource blocks required by the CoMP UE in the current cycle.
  • resource requirement algorithm is not used to limit the scope of protection of the present invention, and existing resource requirement algorithms such as target throughput, actual throughput, channel quality, etc. may be used, and may also be used in existing The resource demand algorithm based on the resource demand algorithm or other resource demand algorithm.
  • determining the priority of the CoMP UEs of each cell includes:
  • the CoMP UE is prioritized according to the QoS satisfaction of the CoMP UE, the CQI of the CoMP UE, the actual data rate of the CoMP UE, and the QoS Class Identifier (QCI) of the CoMP UE specified in the protocol. Prioritize.
  • prioritization algorithm is not used to limit the protection scope of the present invention, and may be implemented by using an existing prioritization algorithm, such as a PF or an ePF algorithm, or an existing prioritization algorithm. Deformed prioritization algorithm or other prioritization algorithm.
  • Step 101 Pre-allocate radio resources for the CoMP UEs of the respective cells according to the number of radio resource blocks required by the CoMP UEs of the respective cells according to the priority of the CoMP UEs of the respective cells.
  • the pre-allocation of the CoMP UE resource may be performed by using a Physical Resource Block (PRB) or a granularity of a Resource Block Group (RBG).
  • PRB Physical Resource Block
  • RBG Resource Block Group
  • the RBG is used as the resource allocation granularity in the present application, but it is not used to limit the protection scope of the embodiment of the present invention.
  • the method of the embodiment of the present invention further includes:
  • Calculate the priority of each common resource first, calculate the interference level (IL, Interference Level) of the common resource, in units of RBG; and then, according to the calculated interference level, determine the priority of each RBG, where
  • IL Interference Level
  • the method for determining the priority of each RBG may be: a weighted averaging method, that is, performing a weighted average on the interference level of each RBG and the number of resources that need to cooperate, thereby comprehensively calculating the priority value PRI RGB on the RBG, according to the calculated
  • the priority value PRI RGB sorts the RBGs. or,
  • the method may also be: a screening ordering method, that is, selecting an RBG that satisfies an interference level condition according to an interference level on each RBG, and then performing priority ordering on the number of resources that the coordinated cell needs to cooperate in the selected RBG.
  • the interference level condition may be a preset interference threshold, and the setting of the interference threshold considers a selection threshold of the interference cooperative cell of the CoMP UE.
  • Step 101 specifically includes: selecting, according to the calculated resource priority, a resource with the highest priority for the CoMP UE, and setting the selected resource as a pre-allocated wireless resource by the CoMP UE. If the resource location of the coordinated cell is a common resource, then it is set as an alternative resource to prevent the coordinated cell from using the resource; if the corresponding resource location of the coordinated cell is a CoMP UE resource or an alternative resource, No adjustments are required.
  • This step emphasizes that the resource is pre-allocated for the CoMP UE according to the priority of the resource.
  • the resource with the highest priority is allocated to the CoMP UE first, ensuring that the interference allocated to the CoMP UE is small or even no interference.
  • the CoMP UEs of each cell also perform resource pre-allocation according to their priorities, which also avoids interference between CoMP UEs between cells and improves the throughput of CoMP UEs.
  • the resource allocation method outputs a resource allocation bitmap to each cell according to the resource pre-allocation result, for example, the resource bitmap is output to each cell in units of RBG.
  • the information includes, but is not limited to, the following information: the RBG location, the UE Id corresponding to the resource location of the coordinated cell, the priority of the RBG, and the coordinated cell. Set; if the RBG is an alternative resource, the information to be included is: RBG location, coordinated cell set.
  • the method for implementing resource allocation avoids interference between CoMP UEs between cells by performing resource pre-allocation according to the priority of the CoMP UE of each cell. Increased throughput of CoMP UEs.
  • the resource pre-allocation is performed by the CoMP UE according to the priority of the resource, and the resource with a high priority is allocated to the CoMP UE first, so that the interference allocated to the CoMP UE is small. Not even disturbing.
  • the method of the embodiment of the present invention further includes:
  • Step 102 Each cell performs scheduling and resource allocation on the CoMP UE in the resource pre-allocation result.
  • the data transmission of the CoMP UE and the non-CoMP UE on the same TTI needs to perform resource allocation according to a certain scheduling order, that is, the eNB preferentially allocates resources for the CoMP UE.
  • the eNB may perform scheduling and resource allocation on the CoMP UE according to factors such as the data volume of the CoMP UE and the channel quality, within the range of the resource pre-allocation result.
  • the scheduling and resource allocation of the CoMP UE includes: pre-allocating a resource pre-allocation result of the CoMP UE, that is, a pre-allocated resource bitmap as a range of eNB scheduling and resource allocation, and the eNB allocates resources to the CoMP UE as needed in the actual scheduling process. That is, the required amount of resources is determined according to the current CoMP UE data amount, channel quality, and the like.
  • a resource pre-allocation result of the CoMP UE that is, a pre-allocated resource bitmap as a range of eNB scheduling and resource allocation
  • the eNB allocates resources to the CoMP UE as needed in the actual scheduling process. That is, the required amount of resources is determined according to the current CoMP UE data amount, channel quality, and the like.
  • Step 103 Send the resource allocation result of the CoMP UE to each coordinated cell of the CoMP UE, and according to the CoMP UE resource allocation result from the coordinated cell, according to the CoMP UE resource allocation situation of the current cell and the resource allocation of the CoMP UE of the coordinated cell, Adjust the resource type of the cell to obtain the adjusted resource bitmap.
  • the eNB sends the usage of the RBG related to the coordinated cell to the coordinated cell according to the resource allocation result of the CoMP UE and the coordinated cell of the RBG of the saved CoMP UE, and is used for coordinated cell resource bitmap adjustment.
  • the resource type of the current cell in this step includes: the CoMP UE resource that is not occupied by the local cell, which can be adjusted to a common resource, that is, can be allocated to the non-CoMP UE; and the resource that is not occupied by the CoMP UE of the coordinated cell, if A cell is an alternative resource, and the resource can also be adjusted to a common resource, that is, it can be allocated to a non-CoMP UE.
  • Step 104 According to the adjusted resource bitmap, and the data volume and channel quality of the non-CoMP UE The amount is scheduled and resource allocated to non-CoMP UEs.
  • the scheduling and resource allocation of the CoMP UE and the non-CoMP UE on one TTI is completed, and the eNB can transmit the packet and data according to the resource allocation result.
  • the resource allocation method in the embodiment of the present invention performs coordinated coordination of radio resources according to the coordinated cell, so that the resource allocation of the system is optimized, which greatly saves the problem caused by avoiding the CoMP UE.
  • the waste of resources improves the resource utilization of the community, thereby further improving the overall throughput and performance of the system.
  • the embodiment of the invention further provides a computer readable storage medium storing computer executable instructions for performing the method for realizing resource allocation according to any of the above.
  • the embodiment of the present invention further provides a system for implementing resource allocation, which includes at least a centralized controller, which is used to acquire related information of coordinated multi-point transmission CoMP user terminal UE of each cell, and determine each The number of radio resource blocks required by the CoMP UE of the cell and the priority of the CoMP UE of each cell;
  • the radio resources are pre-allocated for the CoMP UEs of the respective cells according to the number of radio resource blocks required by the CoMP UEs of the respective cells.
  • the system of the embodiment of the present invention further includes a plurality of base stations eNB under the jurisdiction of the centralized controller;
  • the centralized controller is further configured to: send a CoMP UE pre-allocated radio resource result of each cell to each eNB;
  • the eNB is configured to: each cell performs scheduling and resource allocation on the CoMP UE in the resource pre-allocation result;
  • the resource allocation result of the CoMP UE is sent to each coordinated cell of the CoMP UE, and according to the CoMP UE resource allocation result from the coordinated cell, the cell is adjusted according to the CoMP UE resource allocation situation of the current cell and the resource allocation of the CoMP UE of the coordinated cell.
  • Resource type to obtain an adjusted resource bitmap
  • FIG. 4 is a schematic structural diagram of a centralized controller according to an embodiment of the present invention. As shown in FIG. 4, at least an acquiring module, a processing module, and a pre-allocation module are included;
  • a first acquiring module configured to acquire related information of a CoMP UE of each cell
  • the first processing module is configured to determine, according to the obtained information about the CoMP UE of each cell, the number of radio resource blocks required by the CoMP UE of each cell and the priority of the CoMP UE of each cell;
  • the pre-allocation module is configured to pre-allocate radio resources for the CoMP UEs of the respective cells according to the number of radio resource blocks required by the CoMP UEs of the respective cells according to the priority of the CoMP UEs of the respective cells.
  • the first processing module is specifically configured as:
  • the CoMP UE When the CoMP UE is the initial resource allocation, calculate the required number of resource blocks according to the target throughput and channel quality information in the related information of the obtained CoMP UE;
  • the CoMP UE When the CoMP UE has allocated resources in a previous period, according to the obtained CoMP UE related information, such as the target throughput of the CoMP UE, the actual data rate of the CoMP UE, the CQI of the CoMP UE, and the resource utilization of the CoMP UE in the previous period, and The resource pre-allocation result of the previous cycle, and the resource requirement algorithm calculates the number of resource blocks required by the CoMP UE in the current cycle;
  • the CoMP UE is prioritized by the prioritization algorithm.
  • the pre-allocation module is specifically set to:
  • the corresponding resource location of the coordinated cell of the CoMP UE if it is a normal resource, is set as an alternative resource for circumventing the coordinated resource of the neighboring cell CoMP UE to prohibit the coordinated cell from using the resource.
  • FIG. 5 is a schematic structural diagram of a base station according to an embodiment of the present invention. As shown in FIG. 5, the method further includes: a second acquiring module, a second processing module, a resource adjusting module, and a scheduling module;
  • a second acquiring module configured to acquire a resource pre-allocation result of the CoMP UE of the cell to which the cell belongs;
  • the second processing module is configured to perform scheduling and resource allocation on the CoMP UE in the resource pre-allocation result; and send the resource allocation result of the CoMP UE to each coordinated cell of the CoMP UE;
  • the resource adjustment module is configured to adjust the resource type of the cell according to the CoMP UE resource allocation result of the cell and the resource allocation of the coordinated cell CoMP UE according to the CoMP UE resource allocation result from the coordinated cell, thereby obtaining the adjusted resource bitmap. ;
  • the scheduling module is configured to perform scheduling and resource allocation on the non-CoMP UE according to the adjusted resource bitmap and the data volume and channel quality of the non-CoMP UE.
  • the second processing module is specifically configured as:
  • the resource pre-allocation result of the CoMP UE is used as the range of the base station eNB scheduling and resource allocation, and the eNB allocates the resource for the CoMP UE as needed in the actual scheduling process; and sends the resource allocation result of the CoMP UE to each coordinated cell of the CoMP UE.
  • the resource adjustment module is specifically set to:
  • the CoMP UE resources that are not occupied by the current cell are adjusted to be common resources that can be allocated to the non-CoMP UEs; the resources are not occupied by the CoMP UEs in the coordinated cell, and if the resources are alternate resources in the cell, the resources are adjusted to be allocated. Common resources used by non-CoMP UEs.
  • the method and system for implementing resource allocation, and the centralized controller and the base station, which are provided by the embodiments of the present invention, include acquiring related information of CoMP UEs of each cell, and determining the number of radio resource blocks required by the CoMP UEs of each cell and the cells of each cell.
  • Implementation resources provided by embodiments of the present invention
  • the allocated technical solution by pre-allocating resources according to the priority of the CoMP UEs of each cell, avoids interference between CoMP UEs between cells, and improves the throughput of CoMP UEs.

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Abstract

本文公布了一种实现资源分配的方法和系统，及集中控制器和基站，包括获取各个小区的CoMP UE的相关信息，并确定各个小区的CoMP UE所需的无线资源块数量及各个小区的CoMP UE的优先级；按照各个小区的CoMP UE的优先级从高到低，根据各个小区的CoMP UE所需的无线资源块数量分别为各个小区的CoMP UE预分配无线资源。本发明实施例提供的实现资源分配的技术方案，通过按照各小区的CoMP UE的优先级为其进行资源预分配，规避了各小区之间的CoMP UE之间的干扰，提高了CoMP UE的吞吐量。

Description

实现资源分配的方法和系统，及集中控制器和基站 技术领域
本发明实施例涉及但不限于协作多点传输(CoMP)技术，尤指一种基于CoMP的实现资源分配的方法和系统，及集中控制器和基站。
背景技术
在长期演进(LTE，Long Term Evolution)系统及增强的长期演进(LTE-A，Long Term Evolution-Advanced)系统中，为了提升系统吞吐量，尤其是为了改善小区边缘用户的服务质量和吞吐量，小区间的相互协作和干扰协调越来越重要。
随着第四代移动通信技术(4G)用户的飞速增长，及4G用户对于数据速率以及数据量需求的提升，需要4G移动网络大幅度提升系统吞吐量和频谱效率。为了满足以上需求，尤其是在大型场馆和密集街区，为了不断提高频率复用率和频谱效率，运营商建设了异构网络(HetNet，Heterogeneous Network)，并部署了站间距比较小的密集小区。
密集小区能够增加频率复用率，但是也带来了非常严重的小区间干扰。对于小区边缘用户，尤其是协作多点传输(CoMP，Coordinated Multiple Points)用户，会同时受到来自多个相邻小区的强干扰，从而造成了CoMP用户数据速率和频谱效率都非常低，用户体验较差。为了解决CoMP用户的强干扰问题，在3GPP标准中提出了联合传输(JT)即多个小区利用相同的时频资源同时向一个用户传输数据、协作调度(CS，Coordinated Schedule)等技术方案。
对于相关技术中提到的CS方案，通常是采用分布式的小区资源协调和干扰规避方案。即每个小区独立对本小区覆盖范围内的UE进行调度和资源分配，也就是说，各个小区之间是并行的调度和资源分配。这样的话，CoMP用户的多个干扰源小区之间是无法进行有效的协同和合作的，而不同小区CoMP用户之间的资源协调可能会发生冲突，从而造成CoMP用户的资源分配不能完全正交，因此CoMP用户的性能增益会受到限制。同时，由于CS通常采用分布式方案，因此，CoMP用户的多个干扰源小区之间无法进行有 效的协同和合作，而各个小区为了协作被干扰小区的CoMP用户而禁用了很多无线资源，这样就会造成了系统的资源利用率严重下降，影响了系统的整体吞吐量和性能。
发明内容
以下是对本文详细描述的主题的概述。本概述并非是为了限制权利要求的保护范围。
本发明实施例提供一种实现资源分配的方法和系统，及集中控制器和基站，能够规避各小区之间的CoMP UE之间的干扰，提高CoMP UE的吞吐量。
一方面，本发明实施例提供了一种实现资源分配的方法，包括：
获取各个小区的协作多点传输CoMP用户终端UE的相关信息，并确定各个小区的CoMP UE所需的无线资源块数量及各个小区的CoMP UE的优先级；
按照各个小区的CoMP UE的优先级从高到低，根据各个小区的CoMP UE所需的无线资源块数量分别为各个小区的CoMP UE预分配无线资源。
可选地，所述相关信息包括：
反映所述CoMP UE当前的信道质量的信道质量指示CQI信息；和/或，
反映预先设置的周期T内所述CoMP UE的资源使用情况的资源利用率；和/或，
反映所述CoMP UE需要达到的服务质量QoS要求的目标吞吐量；和/或，
反映预先设置的周期T内所述CoMP UE实际获得的数据传输速率的实际数据速率；和/或，
反映预先设置的周期T内所述CoMP UE的QoS满意程度的QoS满意度；和/或，
反映所述CoMP UE受到哪些邻区干扰以及受到邻区干扰的干扰程度的协作小区信息。
可选地，所述确定各个小区的CoMP UE所需的无线资源块数量包括：
如果所述CoMP UE是初始资源分配，根据所述获得的CoMP UE的相关信息中的目标吞吐量和信道质量信息计算其所需的所述资源块数量；
如果所述CoMP UE上一周期已分配过资源，根据所述获得的CoMP UE的目标吞吐量、CoMP UE的实际数据速率、CoMP UE的CQI及上一周期CoMP UE的资源利用率，和上一周期的资源预分配结果，通过资源需求算法计算本周期所述CoMP UE所需的所述资源块数量。
可选地，所述确定各个小区的CoMP UE的优先级包括：
根据所述获得的CoMP UE相关信息中的QoS满意度、CQI、CoMP UE的实际数据率，以及业务的QoS等级标识QCI，通过优先级排序算法对所述CoMP UE进行优先级排序。
可选地，所述CoMP UE资源预分配以物理资源块PRB，或者以资源块组RBG为颗粒度进行预分配。
可选地，所述CoMP UE资源预分配以资源块组RBG为颗粒度进行预分配时，该方法之前还包括：
将资源类型初始化为可以分配给小区非CoMP UE所使用的普通资源：
以RBG为单位计算各普通资源的干扰水平IL；根据计算出的干扰水平，确定每个RBG的优先级。
可选地，所述确定每个RBG的优先级包括：
对所述每个RBG的干扰水平以及需要协作的资源数进行加权平均，以计算出RBG上优先权值PRIRGB；根据计算出的优先权值PRIRGB对RBG进行排序；或者，
根据所述每个RBG上的干扰水平，筛选出满足预先设置的干扰水平条件的RBG；在筛选出的RBG中，按照协作小区需要协作的资源数进行优先级排序。
可选地，所述为各个小区的CoMP UE预分配无线资源包括：
根据所述计算出的所述RBG的优先级，为CoMP UE选择优先级最高的资源，并将选择的资源设置为所述CoMP UE预分配无线资源；其中，
所述CoMP UE的协作小区相应的资源位置上，如果为普通资源，将其设置为用于规避对相邻小区CoMP UE干扰的协调资源的备选资源，以禁止协作小区使用该资源。
可选地，该方法还包括：各小区在所述资源预分配结果内对CoMP UE进行调度和资源分配；
将CoMP UE的资源分配结果发送给该CoMP UE的各个协作小区，并按照来自协作小区的CoMP UE资源分配结果，根据本小区CoMP UE资源分配情况和协作小区CoMP UE的资源分配情况，调整本小区的资源类型以获得调整后的资源位图；
根据调整后的资源位图，以及非CoMP UE的数据量和信道质量对非CoMP UE进行调度和资源分配。
可选地，所述对CoMP UE进行调度和资源分配包括：
将所述CoMP UE的资源预分配结果作为基站eNB调度和资源分配的范围，eNB在实际调度过程中为CoMP UE按需分配资源。
可选地，所述调整本小区的资源类型包括：
将所述本小区没有占用的CoMP UE资源，调整为可以分配给非CoMP UE使用的普通资源；对于所述协作小区CoMP UE均没有占用的资源，如果在本小区是备选资源，则该资源调整为可以分配给非CoMP UE使用的普通资源。
另一方面，本发明实施例还提供了一种实现资源分配的系统，至少包括集中控制器，设置为获取各个小区的协作多点传输CoMP用户终端UE的相关信息，并确定各个小区的CoMP UE所需的无线资源块数量及各个小区的CoMP UE的优先级；以及，
按照各个小区的CoMP UE的优先级从高到低，根据各个小区的CoMP UE所需的无线资源块数量分别为各个小区的CoMP UE预分配无线资源。
可选地，还包括所述集中控制器管辖下的若干基站eNB；
所述集中控制器还设置为：将所述各个小区的CoMP UE预分配无线资源结果发送给各eNB；
eNB设置为：各小区在所述资源预分配结果内对CoMP UE进行调度和资源分配；
将CoMP UE的资源分配结果发送给该CoMP UE的各个协作小区，并按照来自协作小区的CoMP UE资源分配结果，根据本小区CoMP UE资源分配情况和协作小区CoMP UE的资源分配情况，调整本小区的资源类型以获得调整后的资源位图；
根据调整后的资源位图，以及非CoMP UE的数据量和信道质量对非CoMP UE进行调度和资源分配。
可选地，所述集中控制器至少包括获取模块、处理模块，以及预分配模块；其中，
第一获取模块，设置为获取各个小区的CoMP UE的相关信息；
第一处理模块，设置为根据获得的各个小区的CoMP UE的相关信息中的QoS满意度、CQI、CoMP UE的实际数据率，以及业务的QCI，确定各个小区的CoMP UE所需的无线资源块数量及各个小区的CoMP UE的优先级；
预分配模块，设置为按照各个小区的CoMP UE的优先级从高到低，根据各个小区的CoMP UE所需的无线资源块数量分别为各个小区的CoMP UE预分配无线资源。
可选地，所述eNB至少包括：第二获取模块、第二处理模块、资源调整模块，以及调度模块；其中，
第二获取模块，设置为获取自身所属小区的CoMP UE的资源预分配结果；
第二处理模块，设置为在资源预分配结果内对CoMP UE进行调度和资源分配；将CoMP UE的资源分配结果发送给该CoMP UE的各个协作小区；
资源调整模块，设置为按照来自协作小区的CoMP UE资源分配结果，根据本小区CoMP UE资源分配情况和协作小区CoMP UE的资源分配情况，调整本小区的资源类型，从而获得调整后的资源位图；
调度模块，设置为根据调整后的资源位图，以及非CoMP UE的数据量和信道质量对非CoMP UE进行调度和资源分配。
又一方面，本发明实施例又提供了一种集中控制器，至少包括获取模块、处理模块，以及预分配模块；其中，
第一获取模块，设置为获取各个小区的CoMP UE的相关信息；
第一处理模块，设置为根据获得的各个小区的CoMP UE的相关信息，确定各个小区的CoMP UE所需的无线资源块数量及各个小区的CoMP UE的优先级；
预分配模块，设置为按照各个小区的CoMP UE的优先级从高到低，根据各个小区的CoMP UE所需的无线资源块数量分别为各个小区的CoMP UE预分配无线资源。
可选地，所述第一处理模块具体设置为：
当所述CoMP UE是初始资源分配时，根据所述获得的CoMP UE的相关信息中的目标吞吐量和信道质量信息计算其所需的所述资源块数量；
当所述CoMP UE上一周期已分配过资源时，根据所述获得的CoMP UE的目标吞吐量、CoMP UE的实际数据速率、CoMP UE的CQI及上一周期CoMP UE的资源利用率，和上一周期的资源预分配结果，通过资源需求算法计算本周期所述CoMP UE所需的所述资源块数量；
以及，根据所述获得的CoMP UE相关信息中的中的QoS满意度、CQI、CoMP UE的实际数据率，以及业务的QCI，通过优先级排序算法对所述CoMP UE进行优先级排序。
可选地，所述预分配模块具体设置为：
根据计算出的RBG的优先级，为所述CoMP UE选择优先级最高的资源，并将选择的资源设置为所述CoMP UE预分配无线资源；其中，
所述CoMP UE的协作小区相应的资源位置上，如果为普通资源，将其设置为用于规避对相邻小区CoMP UE干扰的协调资源的备选资源，以禁止协作小区使用该资源。
再一方面，本发明实施例再提供了一种基站，至少包括：第二获取模块、第二处理模块、资源调整模块，以及调度模块；其中，
第二获取模块，设置为获取自身所属小区的CoMP UE的资源预分配结 果；
第二处理模块，设置为在资源预分配结果内对CoMP UE进行调度和资源分配；将CoMP UE的资源分配结果发送给该CoMP UE的各个协作小区；
资源调整模块，设置为按照来自协作小区的CoMP UE资源分配结果，根据本小区CoMP UE资源分配情况和协作小区CoMP UE的资源分配情况，调整本小区的资源类型，从而获得调整后的资源位图；
调度模块，设置为根据调整后的资源位图，以及非CoMP UE的数据量和信道质量对非CoMP UE进行调度和资源分配。
可选地，所述第二处理模块具体设置为：
将所述CoMP UE的资源预分配结果作为调度和资源分配的范围，为所述CoMP UE按需分配资源；将所述CoMP UE的资源分配结果发送给该CoMP UE的各个协作小区。
可选地，所述资源调整模块具体设置为：
将本小区没有占用的CoMP UE资源，调整为可以分配给所述非CoMP UE使用的普通资源；对于协作小区CoMP UE均没有占用的资源，如果在本小区是备选资源，则该资源调整为可以分配给非CoMP UE使用的普通资源。
之外，本发明实施例还提供了一种计算机可读存储介质，存储有计算机可执行指令，所述计算机可执行指令用于执行上述任一项的实现资源分配的方法。
本申请技术方案包括获取各个小区的CoMP UE的相关信息，并确定各个小区的CoMP UE所需的无线资源块数量及各个小区的CoMP UE的优先级；按照各个小区的CoMP UE的优先级从高到低，根据各个小区的CoMP UE所需的无线资源块数量分别为各个小区的CoMP UE预分配无线资源。本发明实施例提供的实现资源分配的技术方案，通过按照各小区的CoMP UE的优先级为其进行资源预分配，规避了各小区之间的CoMP UE之间的干扰，提高了CoMP UE的吞吐量。
可选地，本发明实施例的资源预分配中按照资源的优先级为CoMP UE进行资源预分配，先将优先级别高的资源分配给CoMP UE，保证了分配给 CoMP UE的资源的干扰小，甚至没有干扰。
本发明实施例的其它特征和优点将在随后的说明书中阐述，并且，部分地从说明书中变得显而易见，或者通过实施本发明而了解。本发明的目的和其他优点可通过在说明书、权利要求书以及附图中所特别指出的结构来实现和获得。
在阅读并理解了附图和详细描述后，可以明白其他方面。
附图概述
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为本发明实施例实现资源分配的方法的流程图；
图2为本发明实施例实现资源分配的系统的交互示意图；
图3为本发明实施例系统带宽的无线资源的分类示意图；
图4为本发明实施例集中控制器的组成结构示意图；
图5为本发明实施例基站的组成结构示意图。
本发明的较佳实施方式
为使本发明的目的、技术方案和优点更加清楚明白，下文中将结合附图对本发明的实施例进行详细说明。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任意组合。
图1为本发明实施例实现资源分配的方法的流程图，如图1所示，包括：
步骤100：获取各个小区的CoMP UE的相关信息，并确定各个小区的CoMP UE所需的无线资源块数量及各个小区的CoMP UE的优先级。
图2为本发明实施例实现资源分配的系统的交互示意图，本发明系统包括集中控制器，以及其管辖的若干个eNB，图2中，粗实箭头线表示eNB向集中控制器发送CoMP UE相关信息，粗虚箭头线表示集中控制器向各eNB发送小区资源预分配结果信息，实箭头线表示eNB之间相互交互CoMP UE的实际调度信息。整个系统带宽的无线资源分为三个类型，如图3所示，一 类是CoMP UE资源，为预分配给小区CoMP UE所使用的资源；另一类是备选资源，用于规避对相邻小区CoMP UE干扰的协调资源，在备选资源上eNB不发送任何数据；第三类是普通资源，为预分配给小区非CoMP UE所使用的资源。
本发明实施例的资源预分配可以由集中控制器来实现。资源预分配可以以周期T进行周期性资源预分配，也可以以非周期进行资源预分配。资源预分配过程是一个相对慢速的过程。为了描述方便，本发明实施例以资源预分配的粒度为周期T为例，但是本发明不限于周期性的资源预分配，其中，周期T是一个比传输时间间隔(TTI)(通常为1ms)大的值，比如，周期T可以取值为20ms、50ms或100ms等。
本步骤中，各个小区会向集中控制器上报其CoMP UE的相关信息，获得的每个小区上报的CoMP UE的相关信息包括但不限于如下信息：
(1)CoMP UE的信道质量指示(CQI，Channel Quality Indicator)信息，用于反映CoMP UE当前的信道质量；
(2)CoMP UE的资源利用率，用于反映周期T内CoMP UE的资源使用情况；
(3)CoMP UE的目标吞吐量，用于反映CoMP UE需要达到的服务质量(QoS)要求；
(4)CoMP UE的实际数据速率，用于反映周期T内CoMP UE实际获得的数据传输速率；
(5)CoMP UE的QoS满意度，用于反映周期T内CoMP UE的QoS满意度。
(6)CoMP UE的协作小区信息，用于反映CoMP UE受到哪些邻区干扰以及受到邻区干扰的干扰程度。
本步骤中，确定各个小区的CoMP UE所需的无线资源块数量包括：通过资源需求算法确定各个小区的CoMP UE所需的资源数量；其中，根据CoMP UE是否为初始分配，用于确定CoMP UE的无线资源块数量的资源需求算法有所不同：
(1)如果CoMP UE是初始资源分配，那么，根据CoMP UE的目标吞吐量和信道质量信息计算其所需的资源块数量。
(2)如果CoMP UE上一周期已分配过资源，那么，需要根据获得的CoMP UE相关信息，即CoMP UE的目标吞吐量、CoMP UE的实际数据速率、CoMP UE的CQI，及上一周期CoMP UE的资源利用率等信息，和上一周期的资源预分配结果，通过资源需求算法来计算本周期CoMP UE所需的资源块数量。
需要说明的是，资源需求算法的具体实现并不用于限定本发明的保护范围，可以采用现有的考虑如目标吞吐量，实际吞吐量，信道质量等的资源需求算法，也可以采用在现有资源需求算法基础上变形后的资源需求算法或其它资源需求算法。
本步骤中，确定各个小区的CoMP UE的优先级即对集中控制器获得的所有CoMP UE进行优先级排序包括：
根据CoMP UE的QoS满意度、CoMP UE的CQI、CoMP UE的实际数据率，以及协议中规定的CoMP UE的业务QoS等级标识(QCI，QoS Class Identifier)等因素，通过优先级排序算法对CoMP UE进行优先级排序。
需要说明的是，优先级排序算法的具体实现并不用于限定本发明的保护范围，可以采用现有的优先级排序算法如PF或ePF算法等，也可以采用在现有优先级排序算法基础上变形后的优先级排序算法或其它优先级排序算法。
步骤101：按照各个小区的CoMP UE的优先级从高到低，根据各个小区的CoMP UE所需的无线资源块数量分别为各个小区的CoMP UE预分配无线资源。
CoMP UE资源预分配是可以以物理资源块(PRB，Physical Resource Block)，或者以资源块组(RBG，Resource Block Group)为颗粒度进行预分配。为了方便描述，本申请中仅以RBG作为资源分配粒度为例，但是并不用于限定本发明实施例的保护范围。对于20Mhz带宽的LTE系统，每个小区总共有25个RBG。在进行资源预分配之前即步骤101之前，本发明实施例方法还包括：
将资源类型都初始化为普通资源：
计算各个普通资源的优先级：首先，计算普通资源的干扰水平(IL，Interference Level)，以RBG为单位；然后，根据计算出来的干扰水平，确定每个RBG的优先级，其中，
确定每个RBG的优先级的方法可以是：加权平均法，即对每个RBG的干扰水平以及需要协作的资源数进行加权平均，从而综合计算出RBG上优先权值PRIRGB，根据计算出来的优先权值PRIRGB对RBG进行排序。或者，
也可以是：筛选排序法，即根据每个RBG上的干扰水平，筛选出满足干扰水平条件的RBG，再在筛选出的RBG中，按照协作小区需要协作的资源数进行优先级排序。其中，干扰水平条件可以是一个预先设置的干扰门限值，该干扰门限值的设置会考虑CoMP UE的干扰协作小区的选择门限。
步骤101具体包括：根据计算出的资源优先级，为CoMP UE选择优先级最高的资源，并将选择的资源设置为CoMP UE预分配无线资源。其协作小区相应的资源位置上，如果为普通资源，那么，将其设置为备选资源，以禁止协作小区使用该资源；如果协作小区相应的资源位置上为CoMP UE资源或者为备选资源，则不需要作任何调整。
本步骤强调的是按照资源的优先级为CoMP UE进行资源预分配，先将优先级别高的资源分配给CoMP UE，保证了分配给CoMP UE的资源的干扰小，甚至没有干扰。同时，各小区的CoMP UE也是按照其优先级进行资源预分配，这样也规避了各小区之间的CoMP UE之间的干扰，提高了CoMP UE的吞吐量。
这样，通过本发明实施例上述资源预分配方法，根据资源预分配结果将资源分配位图输出给每个小区，如资源位图以RBG为单位输出给每个小区。那么，进一步地，如果该RBG是协作小区相应的资源位置上CoMP UE资源，需要包含但不限于以下信息：RBG位置、所属协作小区相应的资源位置上UE Id、该RBG的优先级以及协作小区集合；如果该RBG是备选资源，需要包含的信息为：RBG位置、被协作小区集合。
本发明实施例提供的实现资源分配的方法，通过按照各小区的CoMP UE的优先级为其进行资源预分配，规避了各小区之间的CoMP UE之间的干扰， 提高了CoMP UE的吞吐量。
可选地，本发明实施例的资源预分配中按照资源的优先级为CoMP UE进行资源预分配，先将优先级别高的资源分配给CoMP UE，保证了分配给CoMP UE的资源的干扰小，甚至没有干扰。
可选地，本发明实施例方法还包括：
步骤102：各小区在资源预分配结果内对CoMP UE进行调度和资源分配。
CoMP UE和非CoMP UE在同一个TTI上的数据传输，需要按照一定的调度顺序来进行资源分配，也就是说，eNB优先为CoMP UE进行资源分配。本步骤中，eNB在资源预分配结果的范围内，eNB可以根据CoMP UE的数据量和信道质量等因素，对CoMP UE进行调度和资源分配。
其中，对CoMP UE进行调度和资源分配包括：将CoMP UE的资源预分配结果即预分配的资源位图作为eNB调度和资源分配的范围，eNB在实际调度过程中为CoMP UE按需分配资源，即根据当前CoMP UE的数据量、信道质量等来确定所需的资源数量。如何确定的具体实现属于现有技术，并不用于限定本发明的保护范围，这里不再赘述。
步骤103：将CoMP UE的资源分配结果发送给该CoMP UE的各个协作小区，并按照来自协作小区的CoMP UE资源分配结果，根据本小区CoMP UE资源分配情况和协作小区CoMP UE的资源分配情况，调整本小区的资源类型，从而获得调整后的资源位图。
本步骤中，eNB根据CoMP UE的资源分配结果，以及保存的CoMP UE的RBG的协作小区，将与协作小区有关的RBG的使用情况发送给协作小区，用于协作小区资源位图调整。
本步骤中的调整本小区的资源类型包括：对于本小区没有占用的CoMP UE资源，可以调整为普通资源，即可以分配给非CoMP UE使用；对于协作小区CoMP UE均没有占用的资源，如果本小区是备选资源，那么，该资源也可以调整为普通资源，即可以分配给非CoMP UE使用。
步骤104：根据调整后的资源位图，以及非CoMP UE的数据量和信道质 量对非CoMP UE进行调度和资源分配。
本步骤中的如何进行调度和资源分配的具体实现属于本领域技术人员的惯用技术手段，并不用于限定本发明的保护范围，这里不再赘述。
这样，对于一个TTI上CoMP UE、非CoMP UE的调度和资源分配就完成了，eNB就可以根据资源分配结果组包和数据传输了。
从步骤102～步骤104所示的资源分配方法来看，本发明实施例资源分配方法根据协作小区进行无线资源的联合协调，使得系统的资源分配最优化，大大节约了因规避CoMP UE而造成的资源浪费，提高了小区的资源利用率，从而进一步提高了系统的整体吞吐量和性能。
本发明实施例还提供一种计算机可读存储介质，存储有计算机可执行指令，所述计算机可执行指令用于执行上述任一项的实现资源分配的方法。
相应地，如图2所示，本发明实施例还提供一种实现资源分配的系统，至少包括集中控制器，用于获取各个小区的协作多点传输CoMP用户终端UE的相关信息，并确定各个小区的CoMP UE所需的无线资源块数量及各个小区的CoMP UE的优先级；以及，
按照各个小区的CoMP UE的优先级从高到低，根据各个小区的CoMP UE所需的无线资源块数量分别为各个小区的CoMP UE预分配无线资源。
本发明实施例系统还包括集中控制器管辖下的若干基站eNB；此时，
集中控制器还设置为：将各个小区的CoMP UE预分配无线资源结果发送给各eNB；
eNB设置为：各小区在所述资源预分配结果内对CoMP UE进行调度和资源分配；
将CoMP UE的资源分配结果发送给该CoMP UE的各个协作小区，并按照来自协作小区的CoMP UE资源分配结果，根据本小区CoMP UE资源分配情况和协作小区CoMP UE的资源分配情况，调整本小区的资源类型以获得调整后的资源位图；
根据调整后的资源位图，以及非CoMP UE的数据量和信道质量对非CoMP UE进行调度和资源分配。
图4为本发明实施例集中控制器的组成结构示意图，如图4所示，至少包括获取模块、处理模块，以及预分配模块；其中，
第一获取模块，设置为获取各个小区的CoMP UE的相关信息；
第一处理模块，设置为根据获得的各个小区的CoMP UE的相关信息，确定各个小区的CoMP UE所需的无线资源块数量及各个小区的CoMP UE的优先级；
预分配模块，设置为按照各个小区的CoMP UE的优先级从高到低，根据各个小区的CoMP UE所需的无线资源块数量分别为各个小区的CoMP UE预分配无线资源。
其中，
第一处理模块具体设置为：
当CoMP UE是初始资源分配时，根据获得的CoMP UE的相关信息中的目标吞吐量和信道质量信息计算其所需的资源块数量；
当CoMP UE上一周期已分配过资源时，根据获得的CoMP UE相关信息如CoMP UE的目标吞吐量、CoMP UE的实际数据速率、CoMP UE的CQI及上一周期CoMP UE的资源利用率，和上一周期的资源预分配结果，通过资源需求算法计算本周期CoMP UE所需的资源块数量；
以及，根据获得的CoMP UE相关信息中的QoS满意度、CQI、CoMP UE的实际数据率，以及业务的QCI，通过优先级排序算法对CoMP UE进行优先级排序。
预分配模块具体设置为：
根据计算出的RBG的优先级，为CoMP UE选择优先级最高的资源，并将选择的资源设置为所述CoMP UE预分配无线资源；其中，
CoMP UE的协作小区相应的资源位置上，如果为普通资源，将其设置为用于规避对相邻小区CoMP UE干扰的协调资源的备选资源，以禁止协作小区使用该资源。
图5为本发明实施例基站的组成结构示意图，如图5所示，至少包括：第二获取模块、第二处理模块、资源调整模块，以及调度模块；其中，
第二获取模块，设置为获取自身所属小区的CoMP UE的资源预分配结果；
第二处理模块，设置为在资源预分配结果内对CoMP UE进行调度和资源分配；将CoMP UE的资源分配结果发送给该CoMP UE的各个协作小区；
资源调整模块，设置为按照来自协作小区的CoMP UE资源分配结果，根据本小区CoMP UE资源分配情况和协作小区CoMP UE的资源分配情况，调整本小区的资源类型，从而获得调整后的资源位图；
调度模块，设置为根据调整后的资源位图，以及非CoMP UE的数据量和信道质量对非CoMP UE进行调度和资源分配。
其中，
第二处理模块具体设置为：
将CoMP UE的资源预分配结果作为基站eNB调度和资源分配的范围，eNB在实际调度过程中为CoMP UE按需分配资源；将CoMP UE的资源分配结果发送给该CoMP UE的各个协作小区。
资源调整模块具体设置为：
将本小区没有占用的CoMP UE资源，调整为可以分配给非CoMP UE使用的普通资源；对于协作小区CoMP UE均没有占用的资源，如果在本小区是备选资源，则该资源调整为可以分配给非CoMP UE使用的普通资源。
以上所述，仅为本发明实施例的较佳实例而已，并非用于限定本发明的保护范围。凡在本发明的精神和原则之内，所做的任何修改、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
本发明实施例提出的实现资源分配的方法和系统，及集中控制器和基站，包括获取各个小区的CoMP UE的相关信息，并确定各个小区的CoMP UE所需的无线资源块数量及各个小区的CoMP UE的优先级；按照各个小区的CoMP UE的优先级从高到低，根据各个小区的CoMP UE所需的无线资源块数量分别为各个小区的CoMP UE预分配无线资源。本发明实施例提供的实现资源 分配的技术方案，通过按照各小区的CoMP UE的优先级为其进行资源预分配，规避了各小区之间的CoMP UE之间的干扰，提高了CoMP UE的吞吐量。

Claims (22)

  1. 一种实现资源分配的方法，包括：
    获取各个小区的协作多点传输CoMP用户终端UE的相关信息，并确定各个小区的CoMP UE所需的无线资源块数量及各个小区的CoMP UE的优先级；
    按照各个小区的CoMP UE的优先级从高到低，根据各个小区的CoMP UE所需的无线资源块数量分别为各个小区的CoMP UE预分配无线资源。
  2. 根据权利要求1所述的方法，其中，所述相关信息包括：
    反映所述CoMP UE当前的信道质量的信道质量指示CQI信息；和/或，
    反映预先设置的周期T内所述CoMP UE的资源使用情况的资源利用率；和/或，
    反映所述CoMP UE需要达到的服务质量QoS要求的目标吞吐量；和/或，
    反映预先设置的周期T内所述CoMP UE实际获得的数据传输速率的实际数据速率；和/或，
    反映预先设置的周期T内所述CoMP UE的QoS满意程度的QoS满意度；和/或，
    反映所述CoMP UE受到哪些邻区干扰以及受到邻区干扰的干扰程度的协作小区信息。
  3. 根据权利要求1所述的方法，其中，所述确定各个小区的CoMP UE所需的无线资源块数量包括：
    如果所述CoMP UE是初始资源分配，根据所述获得的CoMP UE的相关信息中的目标吞吐量和信道质量信息计算其所需的所述资源块数量；
    如果所述CoMP UE上一周期已分配过资源，根据所述获得的CoMP UE的目标吞吐量、CoMP UE的实际数据速率、CoMP UE的CQI及上一周期CoMP UE的资源利用率，和上一周期的资源预分配结果，通过资源需求算法计算本周期所述CoMP UE所需的所述资源块数量。
  4. 根据权利要求1所述的方法，其中，所述确定各个小区的CoMP UE的优先级包括：
    根据所述获得的CoMP UE相关信息中的QoS满意度、CQI、CoMP UE的实际数据率，以及业务的QoS等级标识QCI，通过优先级排序算法对所述CoMP UE进行优先级排序。
  5. 根据权利要求1所述的方法，其中，所述CoMP UE资源预分配以物理资源块PRB，或者以资源块组RBG为颗粒度进行预分配。
  6. 根据权利要求1所述的方法，当所述CoMP UE资源预分配以资源块组RBG为颗粒度进行预分配时，该方法之前还包括：
    将资源类型初始化为可以分配给小区非CoMP UE所使用的普通资源：
    以RBG为单位计算各普通资源的干扰水平IL；根据计算出的干扰水平，确定每个RBG的优先级。
  7. 根据权利要求6所述的方法，其中，所述确定每个RBG的优先级包括：
    对所述每个RBG的干扰水平以及需要协作的资源数进行加权平均，以计算出RBG上优先权值PRIRGB；根据计算出的优先权值PRIRGB对RBG进行排序；或者，
    根据所述每个RBG上的干扰水平，筛选出满足预先设置的干扰水平条件的RBG；在筛选出的RBG中，按照协作小区需要协作的资源数进行优先级排序。
  8. 根据权利要求6所述的方法，其中，所述为各个小区的CoMP UE预分配无线资源包括：
    根据所述计算出的所述RBG的优先级，为CoMP UE选择优先级最高的资源，并将选择的资源设置为所述CoMP UE预分配无线资源；其中，
    所述CoMP UE的协作小区相应的资源位置上，如果为普通资源，将其设置为用于规避对相邻小区CoMP UE干扰的协调资源的备选资源，以禁止协作小区使用该资源。
  9. 根据权利要求1所述的方法，该方法还包括：各小区在所述资源预分 配结果内对CoMP UE进行调度和资源分配；
    将CoMP UE的资源分配结果发送给该CoMP UE的各个协作小区，并按照来自协作小区的CoMP UE资源分配结果，根据本小区CoMP UE资源分配情况和协作小区CoMP UE的资源分配情况，调整本小区的资源类型以获得调整后的资源位图；
    根据调整后的资源位图，以及非CoMP UE的数据量和信道质量对非CoMP UE进行调度和资源分配。
  10. 根据权利要求9所述的方法，其中，所述对CoMP UE进行调度和资源分配包括：
    将所述CoMP UE的资源预分配结果作为基站eNB调度和资源分配的范围，eNB在实际调度过程中为CoMP UE按需分配资源。
  11. 根据权利要求9所述的方法，其中，所述调整本小区的资源类型包括：
    将所述本小区没有占用的CoMP UE资源，调整为可以分配给非CoMP UE使用的普通资源；对于所述协作小区CoMP UE均没有占用的资源，如果在本小区是备选资源，则该资源调整为可以分配给非CoMP UE使用的普通资源。
  12. 一种实现资源分配的系统，包括集中控制器，设置为获取各个小区的协作多点传输CoMP用户终端UE的相关信息，并确定各个小区的CoMP UE所需的无线资源块数量及各个小区的CoMP UE的优先级；以及，
    按照各个小区的CoMP UE的优先级从高到低，根据各个小区的CoMP UE所需的无线资源块数量分别为各个小区的CoMP UE预分配无线资源。
  13. 根据权利要求12所述的系统，还包括所述集中控制器管辖下的若干基站eNB；
    所述集中控制器还设置为：将所述各个小区的CoMP UE预分配无线资源结果发送给各eNB；
    eNB设置为：各小区在所述资源预分配结果内对CoMP UE进行调度和资源分配；
    将CoMP UE的资源分配结果发送给该CoMP UE的各个协作小区，并按照来自协作小区的CoMP UE资源分配结果，根据本小区CoMP UE资源分配情况和协作小区CoMP UE的资源分配情况，调整本小区的资源类型以获得调整后的资源位图；
    根据调整后的资源位图，以及非CoMP UE的数据量和信道质量对非CoMP UE进行调度和资源分配。
  14. 根据权利要求12或13所述的系统，其中，所述集中控制器至少包括获取模块、处理模块，以及预分配模块；其中，
    第一获取模块，设置为获取各个小区的CoMP UE的相关信息；
    第一处理模块，设置为根据获得的各个小区的CoMP UE的相关信息中的QoS满意度、CQI、CoMP UE的实际数据率，以及业务的QCI，确定各个小区的CoMP UE所需的无线资源块数量及各个小区的CoMP UE的优先级；
    预分配模块，设置为按照各个小区的CoMP UE的优先级从高到低，根据各个小区的CoMP UE所需的无线资源块数量分别为各个小区的CoMP UE预分配无线资源。
  15. 根据权利要求12或13所述的系统，其中，所述eNB包括：第二获取模块、第二处理模块、资源调整模块，以及调度模块；其中，
    第二获取模块，设置为获取自身所属小区的CoMP UE的资源预分配结果；
    第二处理模块，设置为在资源预分配结果内对CoMP UE进行调度和资源分配；将CoMP UE的资源分配结果发送给该CoMP UE的各个协作小区；
    资源调整模块，设置为按照来自协作小区的CoMP UE资源分配结果，根据本小区CoMP UE资源分配情况和协作小区CoMP UE的资源分配情况，调整本小区的资源类型，从而获得调整后的资源位图；
    调度模块，设置为根据调整后的资源位图，以及非CoMP UE的数据量和信道质量对非CoMP UE进行调度和资源分配。
  16. 一种集中控制器，包括获取模块、处理模块，以及预分配模块；其中，
    第一获取模块，设置为获取各个小区的CoMP UE的相关信息；
    第一处理模块，设置为根据获得的各个小区的CoMP UE的相关信息，确定各个小区的CoMP UE所需的无线资源块数量及各个小区的CoMP UE的优先级；
    预分配模块，设置为按照各个小区的CoMP UE的优先级从高到低，根据各个小区的CoMP UE所需的无线资源块数量分别为各个小区的CoMP UE预分配无线资源。
  17. 根据权利要求16所述的集中控制器，其中，所述第一处理模块具体设置为：
    当所述CoMP UE是初始资源分配时，根据所述获得的CoMP UE的相关信息中的目标吞吐量和信道质量信息计算其所需的所述资源块数量；
    当所述CoMP UE上一周期已分配过资源时，根据所述获得的CoMP UE的目标吞吐量、CoMP UE的实际数据速率、CoMP UE的CQI及上一周期CoMP UE的资源利用率，和上一周期的资源预分配结果，通过资源需求算法计算本周期所述CoMP UE所需的所述资源块数量；
    以及，根据所述获得的CoMP UE相关信息中的中的QoS满意度、CQI、CoMP UE的实际数据率，以及业务的QCI，通过优先级排序算法对所述CoMPUE进行优先级排序。
  18. 根据权利要求16所述的集中控制器，其中，所述预分配模块具体设置为：
    根据计算出的RBG的优先级，为所述CoMP UE选择优先级最高的资源，并将选择的资源设置为所述CoMP UE预分配无线资源；其中，
    所述CoMP UE的协作小区相应的资源位置上，如果为普通资源，将其设置为用于规避对相邻小区CoMP UE干扰的协调资源的备选资源，以禁止协作小区使用该资源。
  19. 一种基站，包括：第二获取模块、第二处理模块、资源调整模块，以及调度模块；其中，
    第二获取模块，设置为获取自身所属小区的CoMP UE的资源预分配结 果；
    第二处理模块，设置为在资源预分配结果内对CoMP UE进行调度和资源分配；将CoMP UE的资源分配结果发送给该CoMP UE的各个协作小区；
    资源调整模块，设置为按照来自协作小区的CoMP UE资源分配结果，根据本小区CoMP UE资源分配情况和协作小区CoMP UE的资源分配情况，调整本小区的资源类型，从而获得调整后的资源位图；
    调度模块，设置为根据调整后的资源位图，以及非CoMP UE的数据量和信道质量对非CoMP UE进行调度和资源分配。
  20. 根据权利要求19所述的基站，其中，所述第二处理模块具体设置为：
    将所述CoMP UE的资源预分配结果作为调度和资源分配的范围，为所述CoMP UE按需分配资源；将所述CoMP UE的资源分配结果发送给该CoMP UE的各个协作小区。
  21. 根据权利要求19所述的基站，其中，所述资源调整模块具体设置为：
    将本小区没有占用的CoMP UE资源，调整为可以分配给所述非CoMP UE使用的普通资源；对于协作小区CoMP UE均没有占用的资源，如果在本小区是备选资源，则该资源调整为可以分配给非CoMP UE使用的普通资源。
  22. 一种计算机可读存储介质，存储有计算机可执行指令，所述计算机可执行指令用于执行权利要求1-11任一项的实现资源分配的方法。
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