WO2012062143A1 - Method and device for balancing resident load between cells - Google Patents

Method and device for balancing resident load between cells Download PDF

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Publication number
WO2012062143A1
WO2012062143A1 PCT/CN2011/078430 CN2011078430W WO2012062143A1 WO 2012062143 A1 WO2012062143 A1 WO 2012062143A1 CN 2011078430 W CN2011078430 W CN 2011078430W WO 2012062143 A1 WO2012062143 A1 WO 2012062143A1
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WIPO (PCT)
Prior art keywords
cell
load
base station
resident
load information
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PCT/CN2011/078430
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French (fr)
Chinese (zh)
Inventor
魏莉
董玥昕
徐云翔
龚澍
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中兴通讯股份有限公司
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Publication of WO2012062143A1 publication Critical patent/WO2012062143A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/08—Reselecting an access point
    • 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
    • H04W16/02—Resource partitioning among network components, e.g. reuse partitioning
    • H04W16/06—Hybrid resource partitioning, e.g. channel borrowing
    • H04W16/08—Load shedding arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/16—Performing reselection for specific purposes
    • H04W36/22—Performing reselection for specific purposes for handling the traffic

Definitions

  • the present invention relates to the field of wireless communications, and in particular, to a method and apparatus for residing load balancing between cells. Background technique
  • Load balancing is one of the important functions of LTE system self-optimization.
  • Load balancing can be divided into two types according to different equalization objects.
  • One is load balancing for user equipment (User Equipment), which is mainly based on the traffic load of the cell and its neighbors.
  • the directional operation transfers some users of the higher-load cell to the lower-load neighboring area to achieve load balancing between the cells. This is the most straightforward way to achieve load balancing between cells.
  • the other is load balancing for idle UEs, mainly based on the pre-loading situation of the cell and its neighboring cells, and the partial relocation UE of the cell with higher camping load is transferred by the cell reselection parameter adjustment operation.
  • the load balancing between the cells is realized, thereby reducing the number of handover/redirection triggered by the traffic load, and improving the system capacity while further improving the stability of the system.
  • Resident load balancing for idle state UEs is a useful complement to service load balancing for connected UEs.
  • the operation load balancing and the load balancing operation in the LTE system are all performed by an eNB (Enhanced Node B) base station.
  • the operation of camping load balancing is implemented by adjusting a cell reselection offset parameter in the cell reselection parameter.
  • the cell reselection offset parameter is a cell-based parameter, that is, if cell A has neighbor cells B and C, then A has a cell reselection offset relative to cell B, and a cell reselection bias relative to cell C.
  • Set cell B has cell reselection relative to cell A.
  • Offset cell C also has a cell reselection offset relative to cell A.
  • a and B are cell pairs, and A and C are also a cell pair.
  • the present invention provides a method and a device for relocating load between cells, which can adjust corresponding cell reselection offset parameters according to the difference of the resident load of the neighboring cells, so as to prevent the ping-pong re-election between the cells. Improve the stability of the system.
  • a method for residing load balancing between cells comprising:
  • the first base station to which the first cell belongs obtains load information of the first cell, and determines a resident load amount of the first cell;
  • the first base station when determining that the resident load of the first cell exceeds a set threshold, acquires load information of the second cell, and determines a resident load of the second cell, where the first cell and the second cell are Adjacent cell
  • the first base station adjusts a cell reselection offset parameter of the first cell relative to the second cell according to a difference between the resident load of the first cell and the second cell.
  • a method for residing load balancing between cells comprising:
  • the second base station exchanges the request according to the received load information sent by the first base station, and sends a load information interaction request to the first base station;
  • the second base station obtains load information of the second cell, and determines a resident load amount of the second cell;
  • the second base station adjusts a cell reselection offset parameter of the second cell relative to the first cell according to a difference between the resident load of the first cell and the second cell.
  • a device for residing load balancing between cells comprising:
  • a first cell load obtaining module configured to obtain load information of the first cell, and determine a resident load amount of the first cell
  • a second cell load receiving module configured to: when determining that the resident load of the first cell exceeds a set threshold, acquire load information of the second cell, and determine a resident load of the second cell, where the first cell and The second cell is adjacent;
  • the first cell adjustment module is configured to adjust a cell reselection offset parameter of the first cell relative to the second cell according to a difference between the resident load of the first cell and the second cell.
  • a device for residing load balancing between cells comprising:
  • the first cell load receiving module is configured to: according to the received load information exchange request sent by the first base station, send a load information interaction request to the first base station, receive load information of the first cell sent by the first base station, and determine the first The resident load of the cell;
  • a second cell adjustment module configured to obtain load information of the second cell, determine a resident load of the second cell, and adjust a relative of the second cell according to a difference between the resident load of the first cell and the second cell.
  • the cell reselection offset parameter of the first cell configured to obtain load information of the second cell, determine a resident load of the second cell, and adjust a relative of the second cell according to a difference between the resident load of the first cell and the second cell.
  • the method for residing load balancing between cells can obtain the load information of the current cell periodically, and after the resident load of the current cell exceeds a certain threshold, the resident cell and the neighboring cell can be camped according to the current cell and the neighboring cell.
  • the difference between the load amounts adjusts the relative reselection offset parameters of the neighboring cells in the cell. This can ensure that the parameter adjustment is performed only after the difference is greater than a certain value, and the ping-pong reselection phenomenon that occurs between the UEs in the UE is avoided to some extent.
  • the base station when the local cell and the neighboring cell belong to the same base station, the base station also correspondingly adjusts the cell reselection offset parameter of the neighboring cell, so that the cell and the neighboring cell synchronize the cell reselection offset parameter.
  • the ping-pong reselection phenomenon that occurs between UEs in the cell is further avoided.
  • the first base station to which the local cell belongs and the second base station to which the neighboring cell belongs can perform load information interaction, so that the local cell and the neighboring cell can obtain the resident load amount of each other, and each according to the resident load amount.
  • the difference is adjusted by the cell reselection offset parameter, so that the cell and the neighboring cell can perform the cell reselection offset parameter adjustment synchronously.
  • FIG. 1 is a flowchart of a method for residing load balancing between cells according to Embodiment 1 of the present invention
  • FIG. 2 is a flowchart of a method for residing load balancing between cells according to Embodiment 2 of the present invention
  • the base station 1 adjusts a flow chart of the cell reselection offset parameter of the Cdll;
  • FIG. 4 is a structural diagram of an apparatus for pre-inter-cell resident load balancing according to an embodiment of the present invention
  • FIG. 5 is a structural diagram of a second apparatus for residing load balancing between cells according to an embodiment of the present invention. detailed description
  • the embodiment of the present invention provides a method for residing load balancing between cells. After the resident load of the cell exceeds a threshold, the base station can adjust the relative cell according to the difference between the resident load of the cell and the neighboring cell. Reselection bias parameters for neighboring cells. Only when the difference is greater than a certain value, the parameter adjustment is performed, and the ping-pong reselection phenomenon that occurs between the UEs in the UE is avoided to some extent. Moreover, when the local cell and the neighboring cell belong to the same base station, the base station also correspondingly adjusts the cell reselection offset parameter of the neighboring cell, so that the cell and the neighboring cell synchronize the cell reselection offset parameter.
  • the ping-pong reselection phenomenon that occurs between UEs in the cell is further avoided.
  • the first base station to which the local cell belongs and the second base station to which the neighboring cell belongs can perform load information interaction, so that the local cell and the neighboring cell can obtain the resident of the other party.
  • Load amount, and each performs cell reselection bias parameters according to the difference of the resident load amount The adjustment enables the cell and the neighboring cell to perform cell reselection offset parameter adjustment.
  • the base station can obtain the load information of the two cells, and determine the resident load of the two cells.
  • a flow chart of a method for residing load balancing between cells according to Embodiment 1 of the present invention includes:
  • Step S101 The base station obtains the load information of the local cell, and determines the resident load of the local cell.
  • the base station periodically or the base station obtains the load information of the local cell at the set time point, and determines the resident load of the local cell. ;
  • the base station obtains the load information of Cell 1 and determines the resident load of the Cdll;
  • the base station periodically measures the load information of the cell Cdll reported by the MAC layer, and calculates the resident load of the cell Cell1 according to the load information.
  • the load information refers to the load information specified in the protocol, and generally includes: the total uplink and downlink PRB (Physical Resource Block) usage rate of the cell, the NGBR (Non- Guaranteed Bit Rate) service uplink and downlink PRB usage rate, and the cell GBR (Guaranteed Bit) Rate) PRB usage rate of the uplink and downlink of the service.
  • PRB Physical Resource Block
  • NGBR Non- Guaranteed Bit Rate
  • GBR Guard Bit Rate
  • the resident load amount f (the total PRB usage rate of the cell, the PRB usage rate of the NGBR service, and the PRB usage rate of the GBR service).
  • Step S102 When the base station determines that the resident load of the local cell exceeds a set threshold, acquiring, by the base station, load information of the neighboring cell.
  • the threshold is a load balancing start threshold. When the resident load of the cell exceeds the threshold, the resident load of the cell is high, indicating that the load needs to be performed according to the load of the neighboring cell. Balance.
  • the base station directly obtains the load information of Cdl2, and determines the resident load of Cell 2.
  • Step S103 The base station determines a resident load quantity of the neighboring cell.
  • the base station determines the resident load of the Cdl2 according to the load information of the Cdl2;
  • Step S104 The base station adjusts a cell reselection offset parameter of the neighboring cell relative to the cell according to the difference between the resident load of the cell and the neighboring cell.
  • the base station simultaneously adjusts the cell reselection offset parameter of the neighboring cell relative to the local cell, so as to ensure that the two cells can simultaneously adjust the cell reselection offset parameter, and avoid the cell reselection of the ping-pong phenomenon as much as possible.
  • the base station adjusts the cell reselection offset parameters of Celll and Cdl2 according to the difference of the resident load of Celll and Cell2, specifically:
  • the cell reselection offset parameters of Celll and Cell2 need to be adjusted.
  • the relative Cell2 of Celll is used.
  • the cell reselection offset parameter is lowered, and the cell reselection offset parameter of the relative Cell of Cdl2 is adjusted to be higher, and the steps of Celll and Cdl2 are adjusted to be the same;
  • the cell reselection offset parameter of the Celll is increased, and the cell reselection offset parameter of the Cdl2 is adjusted to be lower, and the steps of the Celll and Cell2 adjustment are the same;
  • a pair of neighboring cells and two adjacent cells belong to adjacent base stations, and the two base stations need To carry out load information interaction, to obtain the load information of the neighboring cell, and determine the resident load of the neighboring cell according to the load information, and adjust the cell reselection offset parameter according to the difference of the resident load amounts of the two. .
  • a flow chart of a method for residing load between cells according to Embodiment 2 of the present invention includes:
  • Step S201 The base station 1 periodically obtains the load information of the Cell1, and determines the resident load of the Celll.
  • Step S202 When the base station 1 determines that the resident load of the cell 1 exceeds the set threshold, the base station 2 sends a load information interaction request, where the load information interaction request is used to request the load information of the cell Cdl2;
  • the load information interaction request is used to request the base station 2 to send the load information of the cell Cdl2 to the base station 1, or request the base station 2 to periodically send the load information of the cell Cdl2 to the base station 1;
  • Step S203 The base station 2 receives the load information interaction request. After that, the load information of Cdl2 is sent to the base station 1;
  • the base station 2 periodically transmits the load information of the Cell 2 to the base station 1;
  • Step S204 The base station 1 determines the resident load of the Cdl2 according to the received load information of the Cell2.
  • Step S205 The base station 1 determines a difference between the resident load amounts of Cell1 and Cdl2, and adjusts a cell reselection offset parameter of Celll relative to Cdl2 according to the difference.
  • the base station 1 If the base station 1 adjusts the cell reselection offset parameter of the Celll, it needs to send a request to stop the load information interaction. After receiving the request, the base station 2 stops transmitting the load information of the Cdl2 to the base station 1.
  • the base station 1 completes the adjustment of the cell reselection offset parameter for the cell Cell1, and refers to the load information of the neighboring cell Cell2 during the adjustment, only When the difference between the two reaches a certain threshold, the cell reselection offset parameter of the cell Cdll is adjusted, and the ping-pong reselection phenomenon of the UE between the cells can be avoided to some extent.
  • step S203 further includes:
  • Step S206 After receiving the load information interaction request, the base station 2 also sends a load information interaction request to the base station 1;
  • Step S207 after receiving the load information interaction request, the base station 1 sends the load information of the Cdll to the base station 2;
  • Step S208 The base station 2 determines, according to the received load information of the Cell1, the resident load of the Cell1.
  • Step S209 the base station 2 obtains the load information of the Cell2, and determines the resident load amount of the Cell2.
  • step S205 the base station 1 adjusts the cell reselection offset parameter of the Cdll according to the difference of the resident load amounts of the Celll and the Cdl2, specifically:
  • the threshold value of a parameter adjustment is preset.
  • the cell reselection offset parameter of the Cdll needs to be adjusted.
  • the cell reselection offset parameter of the Cdll is kept unchanged.
  • a flow chart for adjusting the cell reselection offset parameter of Cell1 for the base station 1 is as follows:
  • Step S301 the base station 1 determines a difference between the resident load of the Cdll and the Cdl2;
  • Step S302 The base station 1 determines whether the difference is greater than or equal to the set parameter adjustment threshold. If yes, go to step S303. If no, keep the cell reselection offset parameter corresponding to Cell2 of Cdll unchanged.
  • Step S303 the base station 1 determines whether the Cdll is negative in two cells (Celll, Cell2). a large-capacity cell, if yes, step S304 is performed, if no, step S305 is performed;
  • Step S304 The base station 1 lowers the cell reselection offset parameter corresponding to the cell Cdl2 in the cell Cell1.
  • the base station 1 lowers the cell reselection offset parameter corresponding to the cell Cdl2 in the cell Cell1 by a set number of steps.
  • Step S305 The base station 1 increases the cell reselection offset parameter corresponding to the cell Cdl2 in the cell Cell1.
  • the base station 1 increases the cell reselection offset parameter corresponding to the cell Cdl2 in the cell Cell1 by a step size.
  • steps S304 and S305 can be set as needed, and the number of steps for each adjustment is not limited in the present invention.
  • step S210 the base station 2 adjusts based on the difference in the resident load amounts of Cell1 and Cdl2.
  • the cell reselection offset parameter of Cell2 is the same as that described above for adjusting Celll by base station 1. When the two are adjusted, the same parameter is used to adjust the threshold. If the base station 1 adjusts the cell reselection offset parameter of Celll, the corresponding base station 2 must adjust the cell reselection offset parameter corresponding to Cdl2. Low, preferably, the number of steps and base station for base station 1 to adjust the cell reselection offset parameter of Celll
  • the foregoing only illustrates the method of the present invention by taking two neighboring cells as an example.
  • the method of the present invention can be applied to the adjustment of the cell reselection offset parameter between any two neighboring cells, if a cell has several neighboring cells.
  • the method may be used to adjust the corresponding cell reselection offset parameter between the local cell and the neighboring cell, thereby implementing resident load balancing among the cells.
  • the cell reselection offset parameter of the neighboring cell of the local cell can be adjusted according to the difference of the resident load of the cell and the neighboring cell. Only when the difference of the resident load is greater than a certain value, the adjustment of the cell reselection offset parameter is performed, which can reduce the small After the area reselection offset parameter is adjusted, the ping-pong reselection phenomenon occurs between the UEs in the cell. Further, when the cell reselection offset parameter of the neighboring cell of the local cell is adjusted correspondingly, the cell reselection offset parameter of the neighboring cell relative to the local cell is adjusted correspondingly, so that the cell opposite to the adjacent two cells can be reselected.
  • the offset parameters are adjusted at the same time, thereby avoiding the phenomenon of ping-pong reselection between adjacent cells in the UE, and improving the system capacity while improving the stability of the system.
  • the embodiment of the present invention provides a first device for residing load balancing between cells, as shown in FIG. 4, including:
  • the first cell load obtaining module 41 is configured to obtain load information of the first cell, and determine a resident load amount of the first cell;
  • the second cell load receiving module 42 is configured to: when determining that the resident load of the first cell exceeds a set threshold, acquire load information of the second cell, and determine a resident load of the second cell, where the first cell, The second cell is adjacent;
  • the first cell adjustment module 43 is configured to adjust a cell reselection offset parameter of the first cell relative to the second cell according to a difference between the resident load of the first cell and the second cell.
  • the first cell and the second cell are in the same base station, and the first cell adjustment module 43 is further configured to adjust the second adjustment when adjusting the cell reselection offset parameter of the first cell relative to the second cell.
  • the cell reselects the offset parameter with respect to the cell of the first cell.
  • the second cell load receiving module 42 is specifically configured to determine that the resident load of the first cell exceeds a set threshold, to the second terminal,
  • the second base station to which the area belongs sends a load information interaction request, and receives load information of the second cell returned by the second base station.
  • the embodiment of the present invention further provides a second device for residing load balancing between cells, as shown in FIG. 5, including:
  • the first cell load receiving module 51 is configured to: according to the received load information interaction request sent by the first base station, and send a load information interaction request to the first base station, and receive the first Load information of a cell, and determining a resident load of the first cell;
  • the second cell adjustment module 52 is configured to obtain load information of the second cell, determine a resident load of the second cell, and adjust the second cell according to a difference between the resident load of the first cell and the second cell.
  • the cell reselection offset parameter is relative to the first cell.
  • the present invention can periodically adjust the load information of the local cell, and after the resident load of the local cell exceeds a certain threshold, the neighboring cell can be adjusted according to the difference between the resident load of the cell and the neighboring cell.
  • the cell reselects the offset parameter. This ensures that the parameter adjustment is performed only after the difference is greater than a certain value, which avoids the ping-pong reselection phenomenon between the UEs to some extent and improves the stability of the system.

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Abstract

Disclosed are a method and a device for balancing resident load between cells, used for solving the problem in the prior art that since resident load of an adjacent cell is not considered when cell reselection parameters of a local cell are adjusted, a UE repeatedly performs cell reselection between the two cells, resulting in a ping-pong phenomenon. Through the present invention, load information of the local cell is periodically obtained, and when the amount of the resident load of the local cell exceeds a threshold, a cell reselection offset parameter of the local cell relative to the adjacent cell is adjusted according to the difference in the amount of the resident loads of the local cell and the adjacent cell. Therefore, it is ensured that the parameter is adjusted only when the difference is greater than a set value, thereby avoiding the ping-pong reselection phenomenon of the UE between the cells to some extent and improving the stability of the system.

Description

一种小区间驻留负荷均衡的方法及装置 技术领域  Method and device for residing load balancing between cells
本发明涉及无线通信领域， 特别是涉及一种小区间驻留负荷均衡的方 法及装置。 背景技术  The present invention relates to the field of wireless communications, and in particular, to a method and apparatus for residing load balancing between cells. Background technique
随着 LTE***的发展与成熟， 3GPP( 3rd Generation Partnership Project ) 提出了***自配置自优化功能。 负荷均衡是 LTE***自优化的重要功能之 一。 根据均衡对象的不同， 负荷均衡可以分为 2种， 一种是针对连接态 UE ( User Equipment, 用户设备）的负荷均衡， 主要是根据本小区及其邻区的 业务负荷情况， 通过切换 /重定向操作， 将负荷较高的小区的部分用户转移 到负荷较低的邻区， 实现小区间的负荷均衡。 这是小区间实现负荷均衡最 直接的方法。  With the development and maturity of the LTE system, 3GPP (3rd Generation Partnership Project) proposed a system self-configuration self-optimization function. Load balancing is one of the important functions of LTE system self-optimization. Load balancing can be divided into two types according to different equalization objects. One is load balancing for user equipment (User Equipment), which is mainly based on the traffic load of the cell and its neighbors. The directional operation transfers some users of the higher-load cell to the lower-load neighboring area to achieve load balancing between the cells. This is the most straightforward way to achieve load balancing between cells.
另一种是针对空闲态 UE的负荷均衡，主要是根据本小区及其邻区的驻 留负荷情况， 通过小区重选参数的调整操作， 将驻留负荷较高的小区的部 分驻留 UE转移到驻留负荷较低的邻区， 实现小区间的驻留负荷均衡，从而 减少因为业务负荷而触发的切换 /重定向次数， 在提高***容量的同时， 进 一步提高了***的稳定性。 针对空闲态 UE 的驻留负荷均衡是针对连接态 UE的业务负荷均衡的有益补充。  The other is load balancing for idle UEs, mainly based on the pre-loading situation of the cell and its neighboring cells, and the partial relocation UE of the cell with higher camping load is transferred by the cell reselection parameter adjustment operation. To the neighboring area with lower load, the load balancing between the cells is realized, thereby reducing the number of handover/redirection triggered by the traffic load, and improving the system capacity while further improving the stability of the system. Resident load balancing for idle state UEs is a useful complement to service load balancing for connected UEs.
LTE***中业务负荷均衡和驻留负荷均衡的操作都是由 eNB( Enhanced Node B )基站来完成的。 其中， 驻留负荷均衡的操作是通过调整小区重选 参数中的小区重选偏置参数实现。 小区重选偏置参数是一个基于小区对儿 的参数， 即^ 设小区 A有相邻小区 B、 C, 则 A有相对小区 B的小区重选 偏置， 以及相对小区 C的小区重选偏置， 小区 B有相对小区 A的小区重选 偏置， 小区 C同样有相对小区 A的小区重选偏置。 A和 B为小区对儿， A 和 C同样为一个小区对儿。 目前， 驻留负荷均衡在进行小区重选参数调整 时， 当其中一个小区确定自身的驻留负荷较大时， 会相应调整自身的小区 重选偏置参数， 并没有考虑相邻小区的驻留负荷， 并且在进行调整时， 小 区对中的相邻小区的小区重选偏置参数并没有改变，这样就导致 UE在该两 个小区间反复执行小区重选， 出现乒乓现象， 增加 UE的耗电， 也大大降低 了网络的稳定性。 发明内容 The operation load balancing and the load balancing operation in the LTE system are all performed by an eNB (Enhanced Node B) base station. The operation of camping load balancing is implemented by adjusting a cell reselection offset parameter in the cell reselection parameter. The cell reselection offset parameter is a cell-based parameter, that is, if cell A has neighbor cells B and C, then A has a cell reselection offset relative to cell B, and a cell reselection bias relative to cell C. Set, cell B has cell reselection relative to cell A. Offset, cell C also has a cell reselection offset relative to cell A. A and B are cell pairs, and A and C are also a cell pair. At present, when performing cell reselection parameter adjustment, when one of the cells determines that its own camping load is large, it will adjust its own cell reselection offset parameter accordingly, and does not consider the neighboring cell's resident. Load, and when making adjustments, the cell reselection offset parameter of the neighboring cell in the cell pair does not change, thus causing the UE to repeatedly perform cell reselection between the two cells, and the ping-pong phenomenon occurs, increasing the consumption of the UE. Electricity also greatly reduces the stability of the network. Summary of the invention
本发明提供一种小区间驻留负荷均衡的方法及装置， 能够根据相邻小 区的驻留负荷量的差值调整对应的小区重选偏置参数，避免 UE在小区之间 发生乒乓重选， 提高***的稳定性。  The present invention provides a method and a device for relocating load between cells, which can adjust corresponding cell reselection offset parameters according to the difference of the resident load of the neighboring cells, so as to prevent the ping-pong re-election between the cells. Improve the stability of the system.
一种小区间驻留负荷均衡的方法， 包括：  A method for residing load balancing between cells, comprising:
第一小区所属的第一基站获得第一小区的负荷信息， 并确定第一小区 的驻留负荷量；  The first base station to which the first cell belongs obtains load information of the first cell, and determines a resident load amount of the first cell;
所述第一基站当确定第一小区的驻留负荷量超过设定阈值时， 获取第 二小区的负荷信息， 并确定第二小区的驻留负荷量， 所述第一小区和第二 小区为相邻小区；  The first base station, when determining that the resident load of the first cell exceeds a set threshold, acquires load information of the second cell, and determines a resident load of the second cell, where the first cell and the second cell are Adjacent cell
所述第一基站根据第一小区和第二小区的驻留负荷量的差值， 调整第 一小区相对该第二小区的小区重选偏置参数。  The first base station adjusts a cell reselection offset parameter of the first cell relative to the second cell according to a difference between the resident load of the first cell and the second cell.
一种小区间驻留负荷均衡的方法， 包括：  A method for residing load balancing between cells, comprising:
第二基站根据接收的第一基站发送的负荷信息交互请求， 并向第一基 站发送负荷信息交互请求；  The second base station exchanges the request according to the received load information sent by the first base station, and sends a load information interaction request to the first base station;
第二基站接收第一基站发送的第一小区的负荷信息， 并确定第一小区 的驻留负荷量；  Receiving, by the second base station, load information of the first cell sent by the first base station, and determining a resident load quantity of the first cell;
第二基站获得第二小区的负荷信息， 并确定第二小区的驻留负荷量； 第二基站根据第一小区和第二小区的驻留负荷量的差值， 调整第二小 区相对第一小区的小区重选偏置参数。 The second base station obtains load information of the second cell, and determines a resident load amount of the second cell; The second base station adjusts a cell reselection offset parameter of the second cell relative to the first cell according to a difference between the resident load of the first cell and the second cell.
一种小区间驻留负荷均衡的装置， 包括：  A device for residing load balancing between cells, comprising:
第一小区负荷获得模块， 用于获得第一小区的负荷信息， 并确定第一 小区的驻留负荷量；  a first cell load obtaining module, configured to obtain load information of the first cell, and determine a resident load amount of the first cell;
第二小区负荷接收模块 , 用于当确定第一小区的驻留负荷量超过设定 阈值时， 获取第二小区的负荷信息， 并确定第二小区的驻留负荷量， 所述 第一小区和第二小区相邻；  a second cell load receiving module, configured to: when determining that the resident load of the first cell exceeds a set threshold, acquire load information of the second cell, and determine a resident load of the second cell, where the first cell and The second cell is adjacent;
第一小区调整模块， 用于根据第一小区和第二小区的驻留负荷量的差 值， 调整第一小区相对该第二小区的小区重选偏置参数。  The first cell adjustment module is configured to adjust a cell reselection offset parameter of the first cell relative to the second cell according to a difference between the resident load of the first cell and the second cell.
一种小区间驻留负荷均衡的装置， 包括：  A device for residing load balancing between cells, comprising:
第一小区负荷接收模块， 用于根据接收的第一基站发送的负荷信息交 互请求， 并向第一基站发送负荷信息交互请求， 接收第一基站发送的第一 小区的负荷信息， 并确定第一小区的驻留负荷量；  The first cell load receiving module is configured to: according to the received load information exchange request sent by the first base station, send a load information interaction request to the first base station, receive load information of the first cell sent by the first base station, and determine the first The resident load of the cell;
第二小区调整模块， 用于获得第二小区的负荷信息， 并确定第二小区 的驻留负荷量， 并根据第一小区和第二小区的驻留负荷量的差值， 调整第 二小区相对第一小区的小区重选偏置参数。  a second cell adjustment module, configured to obtain load information of the second cell, determine a resident load of the second cell, and adjust a relative of the second cell according to a difference between the resident load of the first cell and the second cell. The cell reselection offset parameter of the first cell.
本发明实施例提供的小区间驻留负荷均衡的方法， 通过周期性获取本 小区的负荷信息， 并在本小区的驻留负荷量超过一定阈值后， 能够根据本 小区和相邻小区的驻留负荷量的差值， 调整本小区相对相邻的小区重选偏 置参数。 这样能够保证只有当差值大于一定值之后， 才进行参数调整， 在 一定程度上避免了 UE在小区间发生的乒乓重选现象。并且， 当本小区和相 邻小区属于同一个基站时， 基站还同时对应调整相邻小区的小区重选偏置 参数， 以使得本小区和相邻小区同步进行小区重选偏置参数的调整， 更进 一步避免 UE在小区间发生的乒乓重选现象。较佳地， 当本小区和相邻小区 属于不同基站时， 本小区所属第一基站和相邻小区所属第二基站能够进行 负荷信息交互， 使得本小区和相邻小区都能够获得对方的驻留负荷量， 并 各自根据驻留负荷量的差值进行小区重选偏置参数的调整， 能够使得本小 区和相邻小区能够同步进行小区重选偏置参数调整。 附图说明 The method for residing load balancing between cells according to the embodiment of the present invention can obtain the load information of the current cell periodically, and after the resident load of the current cell exceeds a certain threshold, the resident cell and the neighboring cell can be camped according to the current cell and the neighboring cell. The difference between the load amounts adjusts the relative reselection offset parameters of the neighboring cells in the cell. This can ensure that the parameter adjustment is performed only after the difference is greater than a certain value, and the ping-pong reselection phenomenon that occurs between the UEs in the UE is avoided to some extent. Moreover, when the local cell and the neighboring cell belong to the same base station, the base station also correspondingly adjusts the cell reselection offset parameter of the neighboring cell, so that the cell and the neighboring cell synchronize the cell reselection offset parameter. The ping-pong reselection phenomenon that occurs between UEs in the cell is further avoided. Preferably, when the cell and the neighboring cell When belonging to different base stations, the first base station to which the local cell belongs and the second base station to which the neighboring cell belongs can perform load information interaction, so that the local cell and the neighboring cell can obtain the resident load amount of each other, and each according to the resident load amount. The difference is adjusted by the cell reselection offset parameter, so that the cell and the neighboring cell can perform the cell reselection offset parameter adjustment synchronously. DRAWINGS
图 1为本发明实施例一提供的小区间驻留负荷均衡的方法流程图； 图 2为本发明实施例二提供的小区间驻留负荷均衡的方法流程图； 图 3为本发明实施例提供的基站 1调整 Cdll的小区重选偏置参数的流 程图；  1 is a flowchart of a method for residing load balancing between cells according to Embodiment 1 of the present invention; FIG. 2 is a flowchart of a method for residing load balancing between cells according to Embodiment 2 of the present invention; The base station 1 adjusts a flow chart of the cell reselection offset parameter of the Cdll;
图 4为本发明实施例提供的第一种小区间驻留负荷均衡的装置的结构 图；  4 is a structural diagram of an apparatus for pre-inter-cell resident load balancing according to an embodiment of the present invention;
图 5 为本发明实施例提供的第二种小区间驻留负荷均衡的装置的结构 图。 具体实施方式  FIG. 5 is a structural diagram of a second apparatus for residing load balancing between cells according to an embodiment of the present invention. detailed description
本发明实施例提供一种小区间驻留负荷均衡的方法， 当本小区的驻留 负荷量超过阈值后， 基站能够根据本小区和相邻小区的驻留负荷量的差值， 调整本小区相对相邻小区的重选偏置参数。 只有当差值大于一定值之后， 才进行参数调整， 在一定程度上避免了 UE在小区间发生的乒乓重选现象。 并且， 当本小区和相邻小区属于同一个基站时， 基站还同时对应调整相邻 小区的小区重选偏置参数， 以使得本小区和相邻小区同步进行小区重选偏 置参数的调整， 更进一步避免 UE在小区间发生的乒乓重选现象。 较佳地， 当本小区和相邻小区属于不同基站时， 本小区所属第一基站和相邻小区所 属第二基站能够进行负荷信息交互， 使得本小区和相邻小区都能够获得对 方的驻留负荷量， 并各自根据驻留负荷量的差值进行小区重选偏置参数的 调整， 能够使得本小区和相邻小区都能够进行小区重选偏置参数调整。 下面以一对相邻小区为例， 详细说明本发明的技术方案。 The embodiment of the present invention provides a method for residing load balancing between cells. After the resident load of the cell exceeds a threshold, the base station can adjust the relative cell according to the difference between the resident load of the cell and the neighboring cell. Reselection bias parameters for neighboring cells. Only when the difference is greater than a certain value, the parameter adjustment is performed, and the ping-pong reselection phenomenon that occurs between the UEs in the UE is avoided to some extent. Moreover, when the local cell and the neighboring cell belong to the same base station, the base station also correspondingly adjusts the cell reselection offset parameter of the neighboring cell, so that the cell and the neighboring cell synchronize the cell reselection offset parameter. The ping-pong reselection phenomenon that occurs between UEs in the cell is further avoided. Preferably, when the local cell and the neighboring cell belong to different base stations, the first base station to which the local cell belongs and the second base station to which the neighboring cell belongs can perform load information interaction, so that the local cell and the neighboring cell can obtain the resident of the other party. Load amount, and each performs cell reselection bias parameters according to the difference of the resident load amount The adjustment enables the cell and the neighboring cell to perform cell reselection offset parameter adjustment. The technical solution of the present invention will be described in detail below by taking a pair of adjacent cells as an example.
实施例一  Embodiment 1
一对相邻小区， 并且两小区属于同一个基站， 则该基站能够获得这两 个小区的负荷信息， 并确定两个小区的驻留负荷量。  A pair of neighboring cells, and the two cells belong to the same base station, the base station can obtain the load information of the two cells, and determine the resident load of the two cells.
如图 1 所示， 为本发明实施例一提供的小区间驻留负荷均衡的方法流 程图， 包括：  As shown in FIG. 1 , a flow chart of a method for residing load balancing between cells according to Embodiment 1 of the present invention includes:
步驟 S101、基站获得本小区的负荷信息， 并确定本小区的驻留负荷量； 其中， 基站周期性或者基站在设定的时间点获得本小区的负荷信息， 并确定本小区的驻留负荷量；  Step S101: The base station obtains the load information of the local cell, and determines the resident load of the local cell. The base station periodically or the base station obtains the load information of the local cell at the set time point, and determines the resident load of the local cell. ;
假设两个相邻的小区为 Celll及 Cell2,基站获得 Cell 1的负荷信息， 并 确定 Cdll的驻留负荷量；  Assuming that two adjacent cells are Celll and Cell2, the base station obtains the load information of Cell 1 and determines the resident load of the Cdll;
基站通过 MAC层周期性测量上报小区 Cdll的负荷信息， 并根据负荷 信息计算获得小区 Celll的驻留负荷量；  The base station periodically measures the load information of the cell Cdll reported by the MAC layer, and calculates the resident load of the cell Cell1 according to the load information.
负荷信息是指协议中规定的负荷信息， 一般包括： 小区上下行总的 PRB (Physical Resource Block)使用率、小区 NGBR(Non- Guaranteed Bit Rate) 业务上下行的 PRB使用率、 小区 GBR(Guaranteed Bit Rate)业务上下行的 PRB使用率。  The load information refers to the load information specified in the protocol, and generally includes: the total uplink and downlink PRB (Physical Resource Block) usage rate of the cell, the NGBR (Non- Guaranteed Bit Rate) service uplink and downlink PRB usage rate, and the cell GBR (Guaranteed Bit) Rate) PRB usage rate of the uplink and downlink of the service.
具体的根据负荷信息计算获得驻留负荷量的方法， 例如： 驻留负荷量 = f (小区总的 PRB使用率， NGBR业务的 PRB使用率， GBR业务的 PRB使用 率)。  Specifically, a method for calculating the resident load amount based on the load information, for example, the resident load amount = f (the total PRB usage rate of the cell, the PRB usage rate of the NGBR service, and the PRB usage rate of the GBR service).
步驟 S102、 当基站确定本小区的驻留负荷量超过设定的阈值时， 获取 相邻小区的负荷信息；  Step S102: When the base station determines that the resident load of the local cell exceeds a set threshold, acquiring, by the base station, load information of the neighboring cell.
该阈值为负荷均衡启动门限值， 当本小区的驻留负荷量超过这一阈值 时， 说明本小区驻留负荷较高， 说明需要根据相邻小区的负荷进行负荷均 衡。 The threshold is a load balancing start threshold. When the resident load of the cell exceeds the threshold, the resident load of the cell is high, indicating that the load needs to be performed according to the load of the neighboring cell. Balance.
因为 Cdll、 Cdl2属于同一个基站，则基站直接获得 Cdl2的负荷信息， 并确定 Cell 2的驻留负荷量；  Because Cdll and Cdl2 belong to the same base station, the base station directly obtains the load information of Cdl2, and determines the resident load of Cell 2.
步驟 S103、 基站确定相邻小区的驻留负荷量；  Step S103: The base station determines a resident load quantity of the neighboring cell.
基站根据 Cdl2的负荷信息确定 Cdl2的驻留负荷量；  The base station determines the resident load of the Cdl2 according to the load information of the Cdl2;
步驟 S104、 基站根据本小区和相邻小区的驻留负荷量的差值， 调整本 小区相对相邻小区的小区重选偏置参数；  Step S104: The base station adjusts a cell reselection offset parameter of the neighboring cell relative to the cell according to the difference between the resident load of the cell and the neighboring cell.
较佳地， 基站同时对应调整相邻小区相对本小区的小区重选偏置参数， 以保证两个小区能够同时进行小区重选偏置参数的调整， 尽可能避免小区 重选乒乓现象。  Preferably, the base station simultaneously adjusts the cell reselection offset parameter of the neighboring cell relative to the local cell, so as to ensure that the two cells can simultaneously adjust the cell reselection offset parameter, and avoid the cell reselection of the ping-pong phenomenon as much as possible.
基站根据 Celll和 Cell2的驻留负荷量的差值，调整 Celll和 Cdl2的小 区重选偏置参数， 具体为：  The base station adjusts the cell reselection offset parameters of Celll and Cdl2 according to the difference of the resident load of Celll and Cell2, specifically:
需要预先设定一个参数调整门限值， 当两小区之间的驻留负荷量的差 值超过参数调整门限值时， 需要调整两个小区的小区重选偏置参数。  It is necessary to preset a parameter adjustment threshold. When the difference of the resident load between the two cells exceeds the parameter adjustment threshold, the cell reselection offset parameters of the two cells need to be adjusted.
1 ) 当差值大于或等于参数调整门限值时， 需要调整 Celll和 Cell2的 小区重选偏置参数，当 Celll是两小区中驻留负荷量较大的小区时，将 Celll 的相对 Cell2的小区重选偏置参数调低， 并对应将 Cdl2的相对 Celll的小 区重选偏置参数调高， 并且， Celll、 Cdl2调整的步长相同； 当 Celll是两 小区中驻留负荷量较小的小区时， 将 Celll的小区重选偏置参数调高， 并对 应将 Cdl2的小区重选偏置参数调低， 并且， Celll、 Cell2调整的步长相同； 1) When the difference is greater than or equal to the parameter adjustment threshold, the cell reselection offset parameters of Celll and Cell2 need to be adjusted. When Celll is the cell with larger load in the two cells, the relative Cell2 of Celll is used. The cell reselection offset parameter is lowered, and the cell reselection offset parameter of the relative Cell of Cdl2 is adjusted to be higher, and the steps of Celll and Cdl2 are adjusted to be the same; when Celll is the resident load of the two cells is small In the cell, the cell reselection offset parameter of the Celll is increased, and the cell reselection offset parameter of the Cdl2 is adjusted to be lower, and the steps of the Celll and Cell2 adjustment are the same;
2 ) 当差值小于或等于参数调整门限值时， 说明 Cdll、 Cell2之间的驻 留负荷量相差较小， 不进行两者间的小区重选偏置参数的调整， 即保持 Celll , Cdl2的小区重选偏置参数不变， 驻留负荷均衡操作结束。 2) When the difference is less than or equal to the parameter adjustment threshold, it indicates that the dwell load between Cdll and Cell2 is small, and the adjustment of the cell reselection offset parameter between the two is not performed, that is, keep Celld, Cdl2 The cell reselection offset parameter is unchanged, and the resident load balancing operation ends.
实施例二  Embodiment 2
一对相邻小区， 并且相邻的两小区属于相邻的基站， 则两个基站间需 要进行负荷信息交互， 来获得邻小区的负荷信息， 并根据负荷信息确定邻 小区的驻留负荷量， 并各自根据两者的驻留负荷量的差值， 进行小区重选 偏置参数的调整。 a pair of neighboring cells, and two adjacent cells belong to adjacent base stations, and the two base stations need To carry out load information interaction, to obtain the load information of the neighboring cell, and determine the resident load of the neighboring cell according to the load information, and adjust the cell reselection offset parameter according to the difference of the resident load amounts of the two. .
如图 2所示， 为本发明实施例二提供的小区间驻留负荷均衡的方法流 程图， 包括：  As shown in FIG. 2, a flow chart of a method for residing load between cells according to Embodiment 2 of the present invention includes:
假设相邻的两个小区为 Celll、 Cell2, 且 Cdll属于基站 1 , Cdl2属于 基站 2。  It is assumed that two adjacent cells are Celll, Cell2, and Cdll belongs to base station 1, and Cdl2 belongs to base station 2.
步驟 S201、 基站 1周期性获得 Celll的负荷信息， 并确定 Celll的驻留 负荷量；  Step S201: The base station 1 periodically obtains the load information of the Cell1, and determines the resident load of the Celll.
步驟 S202、 当基站 1确定 Celll的驻留负荷量超过设定的阈值时， 向 基站 2发送负荷信息交互请求， 负荷信息交互请求用于请求小区 Cdl2的负 荷信息；  Step S202: When the base station 1 determines that the resident load of the cell 1 exceeds the set threshold, the base station 2 sends a load information interaction request, where the load information interaction request is used to request the load information of the cell Cdl2;
其中， 负荷信息交互请求用于请求基站 2将小区 Cdl2的负荷信息发送 给基站 1 , 或者请求基站 2周期性将小区 Cdl2的负荷信息发送给基站 1； 步驟 S203、 基站 2接收到负荷信息交互请求后， 将 Cdl2的负荷信息 发送给基站 1;  The load information interaction request is used to request the base station 2 to send the load information of the cell Cdl2 to the base station 1, or request the base station 2 to periodically send the load information of the cell Cdl2 to the base station 1; Step S203: The base station 2 receives the load information interaction request. After that, the load information of Cdl2 is sent to the base station 1;
或者， 基站 2周期性发送 Cell2的负荷信息给基站 1;  Alternatively, the base station 2 periodically transmits the load information of the Cell 2 to the base station 1;
步驟 S204、 基站 1根据接收到的 Cell2的负荷信息， 确定 Cdl2的驻留 负荷量；  Step S204: The base station 1 determines the resident load of the Cdl2 according to the received load information of the Cell2.
步驟 S205、 基站 1确定 Celll和 Cdl2的驻留负荷量的差值， 并根据该 差值调整 Celll的相对 Cdl2的小区重选偏置参数。  Step S205: The base station 1 determines a difference between the resident load amounts of Cell1 and Cdl2, and adjusts a cell reselection offset parameter of Celll relative to Cdl2 according to the difference.
如果是周期性发送时， 则基站 1调整完 Celll的小区重选偏置参数后， 还需要发送停止负荷信息交互的请求， 基站 2接收到该请求后， 停止向基 站 1发送 Cdl2的负荷信息。 通过上述步驟， 基站 1对小区 Celll完成小区 重选偏置参数的调整， 并且， 调整时参考了相邻小区 Cell2的负荷信息， 只 有当两者的差值达到一定阈值时，才对小区 Cdll的小区重选偏置参数进行 调整， 可以在一定程度上避免 UE在小区间发生的乒乓重选现象。 If the base station 1 adjusts the cell reselection offset parameter of the Celll, it needs to send a request to stop the load information interaction. After receiving the request, the base station 2 stops transmitting the load information of the Cdl2 to the base station 1. Through the above steps, the base station 1 completes the adjustment of the cell reselection offset parameter for the cell Cell1, and refers to the load information of the neighboring cell Cell2 during the adjustment, only When the difference between the two reaches a certain threshold, the cell reselection offset parameter of the cell Cdll is adjusted, and the ping-pong reselection phenomenon of the UE between the cells can be avoided to some extent.
较佳地， 为使得 Celll在进行小区重选参数的调整时， Cell2也相应的 能够进行小区重选参数的调整， 上述步驟 S203之后还包括：  Preferably, in order to enable Cell1 to perform cell reselection parameter adjustment, Cell2 is also capable of performing cell reselection parameter adjustment, and step S203 further includes:
步驟 S206、 基站 2接收到负荷信息交互请求后， 也向基站 1发送负荷 信息交互请求；  Step S206: After receiving the load information interaction request, the base station 2 also sends a load information interaction request to the base station 1;
步驟 S207、 基站 1接收到负荷信息交互请求后， 将 Cdll的负荷信息 发送给基站 2;  Step S207, after receiving the load information interaction request, the base station 1 sends the load information of the Cdll to the base station 2;
步驟 S208、 基站 2根据接收到的 Celll的负荷信息， 确定 Celll的驻留 负荷量；  Step S208: The base station 2 determines, according to the received load information of the Cell1, the resident load of the Cell1.
步驟 S209、基站 2获得 Cell2的负荷信息，并确定 Cell2的驻留负荷量； 步驟 S210、 基站 2根据 Celll和 Cell2的驻留负荷量的差值， 调整小区 Cdl2相对小区 Cdll的小区重选偏置参数。  Step S209, the base station 2 obtains the load information of the Cell2, and determines the resident load amount of the Cell2. Step S210: The base station 2 adjusts the cell reselection offset of the cell Cdl2 relative to the cell Cdll according to the difference of the resident load amounts of the Celll and the Cell2. parameter.
其中，步驟 S205中，基站 1根据 Celll和 Cdl2的驻留负荷量的差值调 整 Cdll的小区重选偏置参数， 具体为：  In step S205, the base station 1 adjusts the cell reselection offset parameter of the Cdll according to the difference of the resident load amounts of the Celll and the Cdl2, specifically:
预先设定一个参数调整的门限值， 当 Cdll、 Cell2之间驻留负荷量的差 值超过该参数调整门限值，则需要调整 Cdll的小区重选偏置参数。当 Celll、 Cdl2之间驻留负荷量的差值没有超过该参数调整门限值， 则保持 Cdll的 小区重选偏置参数不变。 如图 3所示， 为基站 1调整 Celll的小区重选偏置 参数的流程图， 具体的调整过程为：  The threshold value of a parameter adjustment is preset. When the difference between the load capacity of the Cdll and the Cell2 exceeds the parameter adjustment threshold, the cell reselection offset parameter of the Cdll needs to be adjusted. When the difference of the resident load between Celll and Cdl2 does not exceed the parameter adjustment threshold, the cell reselection offset parameter of the Cdll is kept unchanged. As shown in FIG. 3, a flow chart for adjusting the cell reselection offset parameter of Cell1 for the base station 1 is as follows:
步驟 S301、 基站 1确定 Cdll和 Cdl2的驻留负荷量的差值；  Step S301, the base station 1 determines a difference between the resident load of the Cdll and the Cdl2;
步驟 S302、 基站 1判断该差值是否大于等于设定的参数调整门限值， 如果是， 执行步驟 S303, 如果否， 则保持 Cdll的与 Cell2对应的小区重选 偏置参数不变；  Step S302: The base station 1 determines whether the difference is greater than or equal to the set parameter adjustment threshold. If yes, go to step S303. If no, keep the cell reselection offset parameter corresponding to Cell2 of Cdll unchanged.
步驟 S303、 基站 1判断 Cdll是否是两小区 （ Celll、 Cell2 ) 中驻留负 荷量大的小区， 如果是， 执行步驟 S304, 如果否， 执行步驟 S305; Step S303, the base station 1 determines whether the Cdll is negative in two cells (Celll, Cell2). a large-capacity cell, if yes, step S304 is performed, if no, step S305 is performed;
步驟 S304、基站 1将小区 Celll中与小区 Cdl2对应的小区重选偏置参 数调低。  Step S304: The base station 1 lowers the cell reselection offset parameter corresponding to the cell Cdl2 in the cell Cell1.
基站 1将小区 Celll中与小区 Cdl2对应的小区重选偏置参数调低设定 个步长。  The base station 1 lowers the cell reselection offset parameter corresponding to the cell Cdl2 in the cell Cell1 by a set number of steps.
步驟 S305、基站 1将小区 Celll中与小区 Cdl2对应的小区重选偏置参 数调高。  Step S305: The base station 1 increases the cell reselection offset parameter corresponding to the cell Cdl2 in the cell Cell1.
基站 1将小区 Celll中与小区 Cdl2对应的小区重选偏置参数调高设定 个步长。  The base station 1 increases the cell reselection offset parameter corresponding to the cell Cdl2 in the cell Cell1 by a step size.
其中， 步驟 S304、 S305中调整的步长数可根据需要设定， 在本发明中 并不限定每次调整的步长数。  The number of steps adjusted in steps S304 and S305 can be set as needed, and the number of steps for each adjustment is not limited in the present invention.
在步驟 S210中， 基站 2根据 Celll和 Cdl2的驻留负荷量的差值调整 In step S210, the base station 2 adjusts based on the difference in the resident load amounts of Cell1 and Cdl2.
Cell2的小区重选偏置参数， 采用上述和基站 1调整 Celll相同的方法。 并 且两者调整时， 采用同一个参数调整门限值， 调整时， 若基站 1将 Celll的 小区重选偏置参数调高，则对应的基站 2必将 Cdl2对应的小区重选偏置参 数调低， 较佳的， 基站 1将 Celll的小区重选偏置参数调整的步长数和基站The cell reselection offset parameter of Cell2 is the same as that described above for adjusting Celll by base station 1. When the two are adjusted, the same parameter is used to adjust the threshold. If the base station 1 adjusts the cell reselection offset parameter of Celll, the corresponding base station 2 must adjust the cell reselection offset parameter corresponding to Cdl2. Low, preferably, the number of steps and base station for base station 1 to adjust the cell reselection offset parameter of Celll
2将 Cell2的小区重选偏置参数调整的步长数相同。 2 The number of steps for adjusting the cell reselection offset parameter of Cell2 is the same.
上述只是以两个相邻小区为例说明本发明的方法， 本发明的方法能够 应用于任意两个相邻小区之间的小区重选偏置参数的调整， 如果一个小区 有若干个相邻小区时， 对每一个相邻小区， 都可以采用该方法调整本小区 和该相邻小区之间对应的小区重选偏置参数， 进而在小区间实现驻留负荷 均衡。  The foregoing only illustrates the method of the present invention by taking two neighboring cells as an example. The method of the present invention can be applied to the adjustment of the cell reselection offset parameter between any two neighboring cells, if a cell has several neighboring cells. For each neighboring cell, the method may be used to adjust the corresponding cell reselection offset parameter between the local cell and the neighboring cell, thereby implementing resident load balancing among the cells.
采用本发明实施例的方法， 能够根据本小区和相邻小区的驻留负荷量 的差值， 调整本小区相对相邻小区的小区重选偏置参数。 只有当驻留负荷 量的差值大于一定值之后， 才进行小区重选偏置参数的调整， 能够减少小 区重选偏置参数调整后， UE在小区间发生的乒乓重选现象。 进一步， 在对 应调整本小区系相对相邻小区的小区重选偏置参数时， 还对应调整相邻小 区相对本小区的小区重选偏置参数， 能够使得相邻两个小区相对的小区重 选偏置参数同时得到调整， 从而避免了 UE在相邻小区间发生乒乓重选现 象， 在提高***容量的同时， 提高***的稳定性。 According to the method of the embodiment of the present invention, the cell reselection offset parameter of the neighboring cell of the local cell can be adjusted according to the difference of the resident load of the cell and the neighboring cell. Only when the difference of the resident load is greater than a certain value, the adjustment of the cell reselection offset parameter is performed, which can reduce the small After the area reselection offset parameter is adjusted, the ping-pong reselection phenomenon occurs between the UEs in the cell. Further, when the cell reselection offset parameter of the neighboring cell of the local cell is adjusted correspondingly, the cell reselection offset parameter of the neighboring cell relative to the local cell is adjusted correspondingly, so that the cell opposite to the adjacent two cells can be reselected. The offset parameters are adjusted at the same time, thereby avoiding the phenomenon of ping-pong reselection between adjacent cells in the UE, and improving the system capacity while improving the stability of the system.
本发明实施例提供第一种小区间驻留负荷均衡的装置， 如图 4所示， 包括：  The embodiment of the present invention provides a first device for residing load balancing between cells, as shown in FIG. 4, including:
第一小区负荷获得模块 41 , 用于获得第一小区的负荷信息， 并确定第 一小区的驻留负荷量；  The first cell load obtaining module 41 is configured to obtain load information of the first cell, and determine a resident load amount of the first cell;
第二小区负荷接收模块 42, 用于当确定第一小区的驻留负荷量超过设 定阈值时， 获取第二小区的负荷信息， 并确定第二小区的驻留负荷量， 该 第一小区、 第二小区相邻；  The second cell load receiving module 42 is configured to: when determining that the resident load of the first cell exceeds a set threshold, acquire load information of the second cell, and determine a resident load of the second cell, where the first cell, The second cell is adjacent;
第一小区调整模块 43 , 用于根据第一小区和第二小区的驻留负荷量的 差值， 调整第一小区相对该第二小区的小区重选偏置参数。  The first cell adjustment module 43 is configured to adjust a cell reselection offset parameter of the first cell relative to the second cell according to a difference between the resident load of the first cell and the second cell.
较佳地， 第一小区和第二小区归属于同一个基站， 则第一小区调整模 块 43还用于在调整第一小区相对该第二小区的小区重选偏置参数时， 对应 调整第二小区相对第一小区的小区重选偏置参数。  Preferably, the first cell and the second cell are in the same base station, and the first cell adjustment module 43 is further configured to adjust the second adjustment when adjusting the cell reselection offset parameter of the first cell relative to the second cell. The cell reselects the offset parameter with respect to the cell of the first cell.
较佳地， 当第一小区和第二小区归属于不同基站时， 第二小区负荷接 收模块 42, 具体用于确定第一小区的驻留负荷量超过设定阈值时， 向第二 'J、区所属的第二基站发送负荷信息交互请求， 并接收该第二基站返回的第 二小区的负荷信息。  Preferably, when the first cell and the second cell are in different base stations, the second cell load receiving module 42 is specifically configured to determine that the resident load of the first cell exceeds a set threshold, to the second terminal, The second base station to which the area belongs sends a load information interaction request, and receives load information of the second cell returned by the second base station.
本发明实施例还提供第二种小区间驻留负荷均衡的装置， 如图 5所示， 包括：  The embodiment of the present invention further provides a second device for residing load balancing between cells, as shown in FIG. 5, including:
第一小区负荷接收模块 51 , 用于根据接收的第一基站发送的负荷信息 交互请求， 并向第一基站发送负荷信息交互请求， 接收第一基站发送的第 一小区的负荷信息， 并确定第一小区的驻留负荷量； The first cell load receiving module 51 is configured to: according to the received load information interaction request sent by the first base station, and send a load information interaction request to the first base station, and receive the first Load information of a cell, and determining a resident load of the first cell;
第二小区调整模块 52, 用于获得第二小区的负荷信息， 并确定第二小 区的驻留负荷量， 并根据第一小区和第二小区的驻留负荷量的差值， 调整 第二小区相对第一小区的小区重选偏置参数。  The second cell adjustment module 52 is configured to obtain load information of the second cell, determine a resident load of the second cell, and adjust the second cell according to a difference between the resident load of the first cell and the second cell. The cell reselection offset parameter is relative to the first cell.
显然， 本领域的技术人员可以对本发明进行各种改动和变型而不脱离 本发明的精神和范围。 这样， 倘若本发明的这些修改和变型属于本发明权 利要求及其等同技术的范围之内， 则本发明也意图包含这些改动和变型在 内。 工业实用性  It is apparent that those skilled in the art can make various modifications and variations to the invention without departing from the spirit and scope of the invention. Thus, it is intended that the present invention cover the modifications and modifications of the invention Industrial applicability
本发明通过周期性获取本小区的负荷信息， 并在本小区的驻留负荷量 超过一定阈值后， 能够根据本小区和相邻小区的驻留负荷量的差值， 调整 本小区相对相邻的小区重选偏置参数。 这样能够保证只有当差值大于一定 值之后， 才进行参数调整，在一定程度上避免了 UE在小区间发生的乒乓重 选现象，提高***的稳定性。  The present invention can periodically adjust the load information of the local cell, and after the resident load of the local cell exceeds a certain threshold, the neighboring cell can be adjusted according to the difference between the resident load of the cell and the neighboring cell. The cell reselects the offset parameter. This ensures that the parameter adjustment is performed only after the difference is greater than a certain value, which avoids the ping-pong reselection phenomenon between the UEs to some extent and improves the stability of the system.

Claims

权利要求书 Claim
1、 一种小区间驻留负荷均衡的方法， 其特征在于， 包括： A method for residing load balancing between cells, characterized in that it comprises:
第一小区所属的第一基站获得第一小区的负荷信息， 并确定第一小区 的驻留负荷量；  The first base station to which the first cell belongs obtains load information of the first cell, and determines a resident load amount of the first cell;
所述第一基站当确定第一小区的驻留负荷量超过设定阈值时， 获取第 二小区的负荷信息， 并确定第二小区的驻留负荷量， 所述第一小区和第二 小区为相邻小区；  The first base station, when determining that the resident load of the first cell exceeds a set threshold, acquires load information of the second cell, and determines a resident load of the second cell, where the first cell and the second cell are Adjacent cell
所述第一基站根据第一小区和第二小区的驻留负荷量的差值， 调整第 一小区相对该第二小区的小区重选偏置参数。  The first base station adjusts a cell reselection offset parameter of the first cell relative to the second cell according to a difference between the resident load of the first cell and the second cell.
2、 如权利要求 1所述的方法， 其中， 若第一小区和第二小区归属于同 一个基站， 则所述第一基站在调整第一小区相对第二小区的小区重选偏置 参数时， 对应调整第二小区相对第一小区的小区重选偏置参数。  2. The method according to claim 1, wherein, if the first cell and the second cell belong to the same base station, the first base station adjusts a cell reselection offset parameter of the first cell relative to the second cell And correspondingly adjusting a cell reselection offset parameter of the second cell relative to the first cell.
3、 如权利要求 1所述的方法， 其中， 若第一小区和第二小区归属于不 同基站， 则当所述第一基站确定第一小区的驻留负荷量超过设定阈值时， 获取第二小区的负荷信息， 具体包括：  The method according to claim 1, wherein, if the first cell and the second cell belong to different base stations, when the first base station determines that the resident load of the first cell exceeds a set threshold, acquiring the first The load information of the two cells specifically includes:
所述第一基站确定第一小区的驻留负荷量超过设定阈值时， 向第二小 区所属的第二基站发送负荷信息交互请求， 并接收所述第二基站返回的第 二小区的负荷信息。  When the first base station determines that the resident load of the first cell exceeds a set threshold, the first base station sends a load information interaction request to the second base station to which the second cell belongs, and receives load information of the second cell returned by the second base station. .
4、 如权利要求 3所述的方法， 其中， 所述方法还包括：  4. The method of claim 3, wherein the method further comprises:
第二基站根据第一基站发送的负荷信息交互请求， 向第一基站发送负 荷信息交互请求， 并接收所述第一基站发送的第一小区的负荷信息。  The second base station sends a load information interaction request to the first base station according to the load information interaction request sent by the first base station, and receives load information of the first cell sent by the first base station.
5、 如权利要求 4所述的方法， 其中， 所述方法还包括：  5. The method of claim 4, wherein the method further comprises:
第二基站根据接收到的所述第一小区的负荷信息， 确定第一小区的驻 留负荷量； 第二基站获得第二小区的负荷信息， 并确定第二小区的驻留负荷量； 第二基站根据第一小区和第二小区的驻留负荷量的差值， 调整第二小 区相对第一小区的小区重选偏置参数。 The second base station determines, according to the received load information of the first cell, a resident load amount of the first cell; The second base station obtains the load information of the second cell, and determines the resident load of the second cell; the second base station adjusts the second cell relative to the first cell according to the difference between the resident load of the first cell and the second cell. The cell reselection bias parameter.
6、 如权利要求 1至 5任一项所述的方法， 其中， 所述根据第一小区和 第二小区的驻留负荷量的差值， 调整第一小区相对第二小区的小区重选偏 置参数， 具体为：  The method according to any one of claims 1 to 5, wherein the adjusting the cell reselection bias of the first cell relative to the second cell according to the difference of the resident load of the first cell and the second cell Set the parameters, specifically:
当所述差值大于等于参数调整门限值时， 若第一小区的驻留负荷量较 高， 则将第一小区的相对第二小区的小区重选偏置参数调低， 若第一小区 的驻留负荷量较低， 则将第一小区的相对第二小区的小区重选偏置参数调 高；  When the difference is greater than or equal to the parameter adjustment threshold, if the resident load of the first cell is higher, the cell reselection offset parameter of the second cell of the first cell is lowered, if the first cell If the resident load is low, the cell reselection offset parameter of the second cell of the first cell is increased;
当所述差值小于等于参数调整门限值时， 则保持第一小区的小区重选 偏置参数不变。  When the difference is less than or equal to the parameter adjustment threshold, the cell reselection offset parameter of the first cell is kept unchanged.
7、 一种小区间驻留负荷均衡的方法， 其特征在于， 包括：  7. A method for residing load balancing between cells, comprising:
第二基站根据接收的第一基站发送的负荷信息交互请求， 并向第一基 站发送负荷信息交互请求；  The second base station exchanges the request according to the received load information sent by the first base station, and sends a load information interaction request to the first base station;
第二基站接收第一基站发送的第一小区的负荷信息， 并确定第一小区 的驻留负荷量；  Receiving, by the second base station, load information of the first cell sent by the first base station, and determining a resident load quantity of the first cell;
第二基站获得第二小区的负荷信息， 并确定第二小区的驻留负荷量； 第二基站根据第一小区和第二小区的驻留负荷量的差值， 调整第二小 区相对第一小区的小区重选偏置参数。  The second base station obtains the load information of the second cell, and determines the resident load of the second cell; the second base station adjusts the second cell relative to the first cell according to the difference between the resident load of the first cell and the second cell. The cell reselection bias parameter.
8、 一种小区间驻留负荷均衡的装置， 其特征在于， 包括：  8. A device for residing load balancing between cells, comprising:
第一小区负荷获得模块， 用于获得第一小区的负荷信息， 并确定第一 小区的驻留负荷量；  a first cell load obtaining module, configured to obtain load information of the first cell, and determine a resident load amount of the first cell;
第二小区负荷接收模块， 用于当确定第一小区的驻留负荷量超过设定 阈值时， 获取第二小区的负荷信息， 并确定第二小区的驻留负荷量， 所述 第一小区和第二小区为相邻小区； a second cell load receiving module, configured to: when determining that the resident load of the first cell exceeds a set threshold, acquire load information of the second cell, and determine a resident load of the second cell, where The first cell and the second cell are neighboring cells;
第一小区调整模块， 用于根据第一小区和第二小区的驻留负荷量的差 值， 调整第一小区相对该第二小区的小区重选偏置参数。  The first cell adjustment module is configured to adjust a cell reselection offset parameter of the first cell relative to the second cell according to a difference between the resident load of the first cell and the second cell.
9、 如权利要求 8所述的装置， 其中， 若第一小区和第二小区归属于同 一个基站， 则所述第一小区调整模块还用于在调整第一小区相对该第二小 区的小区重选偏置参数时， 对应调整第二小区相对第一小区的小区重选偏 置参数。  The device according to claim 8, wherein, if the first cell and the second cell are in the same base station, the first cell adjustment module is further configured to adjust the cell of the first cell relative to the second cell When the offset parameter is reselected, the cell reselection offset parameter of the second cell relative to the first cell is adjusted correspondingly.
10、 如权利要求 8所述的装置， 其中， 若第一小区和第二小区归属于 不同基站， 则所述第二小区负荷接收模块， 在确定第一小区的驻留负荷量 超过设定阈值时， 向第二小区所属的第二基站发送负荷信息交互请求， 并 接收所述第二基站返回的第二小区的负荷信息。  10. The apparatus according to claim 8, wherein, if the first cell and the second cell belong to different base stations, the second cell load receiving module determines that the resident load of the first cell exceeds a set threshold. And sending a load information interaction request to the second base station to which the second cell belongs, and receiving load information of the second cell returned by the second base station.
11、 一种小区间驻留负荷均衡的装置， 其特征在于， 包括：  11. A device for residing load balancing between cells, comprising:
第一小区负荷接收模块， 用于根据接收的第一基站发送的负荷信息交 互请求， 并向第一基站发送负荷信息交互请求， 接收第一基站发送的第一 小区的负荷信息， 并确定第一小区的驻留负荷量；  The first cell load receiving module is configured to: according to the received load information exchange request sent by the first base station, send a load information interaction request to the first base station, receive load information of the first cell sent by the first base station, and determine the first The resident load of the cell;
第二小区调整模块， 用于获得第二小区的负荷信息， 并确定第二小区 的驻留负荷量， 并根据第一小区和第二小区的驻留负荷量的差值， 调整第 二小区相对第一小区的小区重选偏置参数。  a second cell adjustment module, configured to obtain load information of the second cell, determine a resident load of the second cell, and adjust a relative of the second cell according to a difference between the resident load of the first cell and the second cell. The cell reselection offset parameter of the first cell.
PCT/CN2011/078430 2010-11-09 2011-08-15 Method and device for balancing resident load between cells WO2012062143A1 (en)

Applications Claiming Priority (2)

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