WO2010028604A1 - 频带划分的方法、装置和基站 - Google Patents
频带划分的方法、装置和基站 Download PDFInfo
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- WO2010028604A1 WO2010028604A1 PCT/CN2009/073865 CN2009073865W WO2010028604A1 WO 2010028604 A1 WO2010028604 A1 WO 2010028604A1 CN 2009073865 W CN2009073865 W CN 2009073865W WO 2010028604 A1 WO2010028604 A1 WO 2010028604A1
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- cell
- edge
- load
- frequency band
- usage range
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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
- H04W72/52—Allocation or scheduling criteria for wireless resources based on load
Definitions
- the present invention relates to the field of mobile communication applications, and in particular, to a method, an apparatus, and a base station for band division.
- each cell uses all available frequency bands.
- the cell edge signal is relatively weak, and the user at the cell edge needs a large transmission power, which causes a large interference to the neighboring cell, and the user at the cell edge is closer to the neighboring cell, and is more susceptible to the neighboring cell user and the base station.
- Downstream interference Therefore, if adjacent cells use the same frequency band at the cell edge, it will cause large inter-cell interference.
- LTE uses inter-cell interference randomization by using different codewords, so the inter-cell interference of the pilot and control channels has little effect.
- the line interference of the small interval is closely related to the distribution of the user.
- An edge user has a large interference to one cell edge of the serving cell, but may have little interference to another neighboring cell of the serving cell. Therefore, the line interference coordination needs to determine the neighboring cells for different edge users, and based on this, perform corresponding operations.
- a high interference indication (High Interference) is defined in the implementation process. Indication, HIl) and overload indication (Overload
- Indication 01
- the body of the message passing information between cells through the defined message body.
- a cell transmits information to different neighboring cells through a ⁇ message, and informs its neighboring cell, which physical resource blocks (Physical Resource)
- PRB is susceptible to interference, ie resources for the cell edge of the cell.
- a bit field is used to identify the performance of the PRB. If the bit field is "0", that is, the PRB is not a high-interference PRB, the neighboring cell can use the PRB at its own edge. If the bit field takes the value "1", that is, the PRB is a high-interference PRB, the neighboring cell preferably does not schedule the PRB at the edge.
- a small area sends information to all neighboring areas through the 01 message, telling its neighboring cells, the degree of interference of the PRB of the cell, and the degree of interference of the PRB is divided into high, medium and low levels. Through the interaction of these two messages, the cells can determine the distribution of the other party's frequency band resources, achieve the reuse of frequency resources between the cells, and try to avoid interference between cells.
- the cell informs the neighboring area of the PRB for the cell edge and the PRB of the cell center through the ⁇ information, and the PRB resource used by the neighboring cell at the edge.
- the edge PRB is not used enough, the resource interference in the cell increases, and the transmission of the HII is triggered again, the allocation of the edge PRB is increased, and the allocation of the PRB at the edge is reduced.
- the inventor finds that if too much frequency band resources are used for the edge in the process of allocation, the user service quality of the cell center is inevitably not guaranteed, and the cell is too much.
- the band resources are used for the edge, and then the bandwidth resources available to the edge of the neighboring cell are few, and the optimal band division purpose is also not obtained.
- the embodiment of the present invention provides a method, a device, and a base station for frequency band division.
- the method provided by the embodiment of the present invention improves user service quality.
- a method of frequency band division comprising:
- a device comprising:
- an acquiring module configured to acquire a cell load of the cell, where the cell load includes a cell edge load of the cell;
- the frequency band dividing module is configured to divide a cell edge frequency band usage range of the cell according to the cell load acquired by the acquiring module.
- a base station comprising the apparatus of any one of claims 6-8.
- a computer readable storage medium storing computer program code, when the computer program code is executed by a computer, the computer program code can cause the computer to perform the claims The method of any one of items 1 to 5.
- the frequency band usage range is dynamically configured for the cell edge according to the cell load, so that excessive band resources are not applied to the cell edge, so that the user quality of the cell center area user and the cell edge user are both Satisfied.
- FIG. 1 is a network system diagram in an embodiment of the present invention
- FIG. 2 is a view showing a positional relationship between a cell edge and a central area divided by a cell according to an embodiment of the present invention
- FIG. 3 is a flowchart of frequency band division in an embodiment of the present invention.
- FIG. 4 is a specific flowchart of frequency band division in an embodiment of the present invention.
- FIG. 5 is a schematic structural diagram of a device according to an embodiment of the present invention.
- FIG. 6 is another schematic structural diagram of a device structure in an embodiment of the present invention.
- a certain number of frequency points are configured for a cell edge of a cell, which can help the base station to divide the edge frequency band and clarify the range of the available frequency band to avoid adversely affecting system performance.
- the network system provided by the embodiment of the present invention includes multiple cells, and the edge distribution of each cell is as shown in FIG. 1.
- FIG. 1 shows four cells, that is, a first cell and a second cell.
- the third cell and the fourth cell may be located in the same base station or in different base stations.
- the cell edge part generally overlaps with the neighboring cell part, such as the cell edge A formed by the first cell and the second cell, the cell edge B formed by the first cell and the third cell, and the cell edge C formed by the first cell and the fourth cell
- the cell edge eight, the cell edge B, and the cell edge C are the sub-cell edges of the first cell, that is, the cell edge is composed of the sub-cell edge.
- the use frequency band range of the cell edge is configured in each cell, and the first cell is mainly described as an example.
- Figure 2 shows the relationship between the cell edge and the central area in the first cell, which will be the first cell
- the area is divided into a cell edge and a cell center.
- a certain number of frequency band usage rates are configured for the cell edge in the cell.
- the method may be configured by using a fixed frequency band, for example, a fixed frequency band is used at the edge of the cell, or may be set by a threshold.
- the limit is a ratio, that is, the ratio of the frequency used by the edge of the cell to the total frequency band of the cell.
- the frequency band configured at the edge of the cell is initially configured in the base station, or the frequency band is initially allocated for the cell. In a specific implementation process, one frequency band may also be reconfigured according to the relationship between the cell edge load and the total load of the cell.
- FIG. 3 shows the first flowchart of the frequency band division in the embodiment of the present invention, and the specific steps are as follows:
- Step S301 Acquire a cell load of the first cell
- Step S302 The frequency band of the cell edge of the first cell is divided according to the cell load.
- the frequency band usage of the cell edge at the cell edge can be controlled according to the cell edge load state, and the frequency band usage of the central area and the cell edge in the cell can be satisfied, so that the service quality in the cell reaches the best.
- FIG. 4 is a specific flowchart of the frequency band division in the embodiment of the present invention.
- the initial use frequency band range is initially divided into the cell edge frequency band of the cell, and in the process of using, the total cell load and the cell need to be combined.
- the edge load relationship optimizes the range of use of the edge band.
- Step S401 pre-set a certain number of frequency band usage ranges for the edge regions on the cell;
- a threshold value may be set according to the total frequency band used by the cell, that is, a constraint ratio, that is, a partial frequency band of the total frequency band is allocated to the cell edge, for example, the threshold value in the first cell.
- the cell edge of the cell can only use half of the total frequency band of the cell.
- the frequency band at the edge of the cell reaches half of the total frequency band of the cell, the cell is no longer the cell edge to ensure the quality of service of the user in the central area. Users provide more usage bands.
- the frequency band usage range of the cell edge configured in this embodiment is an initial configuration value, which may not be an optimal value. Therefore, it is required to further optimize the small relationship by combining the relationship between the cell edge load and the total cell load.
- the band usage range at the edge of the zone is an initial configuration value, which may not be an optimal value. Therefore, it is required to further optimize the small relationship by combining the relationship between the cell edge load and the total cell load.
- Step S402 Acquire a cell edge load and a total cell load
- the cell edge load and the total cell load may be obtained by setting a buffer, and detecting, calculating a cell edge load state, and a total cell load state after the set arrival time is reached; or
- the state base station finds that the edge interference of a certain cell exceeds a preset threshold, and needs to re-divide the frequency usage range to meet the system requirement, triggering the measurement of the cell edge and the load state of the cell, where the preset threshold of the cell edge interference
- the value may be set according to specific system requirements, which is not specifically limited in the embodiment of the present invention.
- the total cell load status is generally reflected by the PRB usage rate in the cell.
- the total cell load state can ultimately be measured by a normalized value.
- the cell may be allocated with the PRB usage rate of the cell edge of the local cell, and the PRBs are PRBs of the local cell, and may be specifically according to the frequency band 1, the frequency band 2, and the frequency band 3 in the first cell. , Band 4, Band 5, and Band 6 are measured by PRB usage.
- the cell edge load can be measured in the same way as a normalized value. After the total load state of the cell and the edge load state of the cell are measured according to two normalized values, the size relationship between the loads can be judged.
- Step S403 determining the relationship between the cell edge load and the total cell load size
- step S404 if the cell edge load is greater than the total cell load, step S404 is performed; if the cell edge load is equal to the total cell load, step S405 is performed; if the cell edge load is less than the total cell load, step S406 is performed. .
- Step S404 Increase the frequency range that can be used by the cell edge
- Step S405 Do not adjust the frequency range that can be used by the cell edge
- Step S406 Reduce the frequency range that can be used by the cell edge.
- a smaller use frequency band may be allocated to the cell edge.
- the threshold may be reduced, and the cell edge may be reduced. The range of use of the frequency band.
- step S404 and step S406 may be performed by using one or more PRBs as the adjustment step size, mainly according to the difference between the cell edge load and the total cell load.
- the edge bands used by the first cell and each neighboring cell are coordinated within a new range of use, and the performance of the cell as a whole is not affected during the band adjustment process at the cell edge.
- the adjusted maximum threshold value and the lowest threshold value may be set, and the highest threshold value is used to limit the unrestricted height adjustment, the minimum threshold value.
- the divided frequency range is no longer added or reduced to the edge area.
- the band usage range of the central area may be divided according to the cell edge load state, so that the central area satisfies the agreement of the use range, thereby satisfying System service quality requirements.
- the load state of the central area may also be obtained, and the frequency division of the cell edge is performed by comparing the load state of the central area with the cell edge load state, and the specific dividing method is divided according to the cell edge load and the total cell load. The method of using the range of the frequency band at the edge of the cell is similar and will not be mentioned here.
- the embodiment of the present invention may coordinate the frequency usage range of each sub-cell edge within the range of the cell edge after the interference of the edge of each sub-cell changes. Therefore, the embodiment of the present invention further includes the step of: coordinating frequency band usage of each edge region according to the divided frequency band use range. Specifically, in the process of providing services for users at the cell edge, the first cell and each neighboring cell exchange information through HII, so that each cell can acquire information of a frequency band used by the edge of each cell. When there are changes in the distribution of cell edge users in different areas, the edge band resources used by the edges of each sub-cell can be re-divided.
- the division is only divided within the frequency band of the cell edge, and the same is required for the division.
- the message informs the corresponding neighbor. For example, if the edge users of the edge C of the sub-cell increase, the interference increases, and the division of the edge frequency band needs to be increased, and the edge users of the sub-cell edge A have few edges and the interference is small, so that the frequency band allocated to the edge A of the sub-cell can be allocated.
- the resource is used by the cell edge C.
- the frequency band 1 is divided into the sub-cell edge C, where the first cell also needs to send a HI I message to notify the new frequency band usage range of the respective sub-cell edges of the second cell and the fourth cell.
- the frequency band usage range of the sub-cell edge is adjusted within the divided frequency band usage range.
- the frequency band resources allocated to the cell edge are more rationally used, satisfying the user requirements of the edge area, and improving the service quality of the edge area.
- FIG. 5 is a schematic structural diagram of a device in an embodiment of the present invention, where the device includes an obtaining module 501 and a frequency band dividing module 502, where: an obtaining module 501 is configured to acquire a cell load, where the cell load includes The edge load of the cell and the total load of the cell, or the edge load of the cell and the load of the cell center area, the band dividing module 502 is configured to divide the cell edge band range of the cell according to the cell load acquired by the obtaining module 501.
- a certain frequency band usage share is configured for the cell edge of the cell, and the available frequency range of the cell edge is clarified, and the frequency band usage share of the cell used at the cell edge is configured.
- the user equipment at the edge of the cell provides services, so that the quality of the user in the central area of the cell and the user at the edge of the cell are satisfied.
- the device may be a base station or a base station controller or the like for managing a cell band resource.
- the embodiment of the present invention further provides a schematic structural diagram of the device. As shown in FIG. 6, the method further includes an obtaining module 601, a band dividing module 602, and a coordination module 603, where:
- the obtaining module 601 is configured to acquire a cell load.
- the cell load may be a cell edge load and a total cell load, or a cell edge load and a cell center area load, and the acquiring method may be: periodically acquiring a cell load. Or, when the cell edge interference exceeds a preset threshold, the cell load is acquired.
- the obtaining unit 601 is configured to acquire a cell load according to a usage rate of the physical resource block.
- the frequency band dividing module 602 is configured to divide a cell edge division frequency band range of the cell according to the cell load information acquired by the obtaining module 601. Specifically, the frequency band dividing module 602 is configured to increase the frequency band usage range of the cell edge division of the cell when the cell edge load acquired by the acquiring unit 601 is greater than the total cell load or the cell center area load, and is also used by the cell acquired by the acquiring unit 601. The edge load is smaller than the total cell load or the cell center area load ⁇ , and the frequency band usage range of the cell edge division of the cell is reduced. If the cell edge load acquired by the acquiring unit 610 is the same as the total cell load or the cell center area load, it is not necessary to adjust the frequency band range of the cell edge load.
- the obtaining unit 601 is further configured to acquire high interference indication information of each sub-cell edge sent by each adjacent cell where the cell edge is located.
- the coordination module 603 is configured to coordinate, according to the high interference indication information acquired by the obtaining unit 601, a frequency band range of the edge of each sub-cell within a frequency band divided by the frequency band division module.
- each cell in the edge of each sub-cell exchanges high-interference indication information at the edge of each sub-cell, where the cell edge includes each sub-cell edge, and coordinates each of the frequency bands in the cell edge according to the high interference indication information of the interaction
- the frequency band range of the edge of the sub-cell when the interference of the high-interference indication information of the interaction indicates that the interference of the edge of the sub-cell increases, the frequency band of the edge of the sub-cell is increased within the frequency band of the cell edge.
- Embodiments of the present invention also provide a base station including the apparatus as described above.
- a certain frequency band usage share is configured for the cell edge of the cell, and the available frequency range of the cell edge is clarified, and the frequency band share configured by the cell at the cell edge is the cell edge.
- the user equipment provides services to satisfy the quality of service of users in the central area of the cell and users at the edge of the cell. By limiting the configuration frequency, too many frequency band resources are not applied to the cell edge, so that the bandwidth resource configuration of the neighboring cell at the edge can be satisfied.
- the user can be served by the frequency of the cell edge allocated by the coordinating cell and the neighboring cell, thereby avoiding the blind adjustment and causing the interference coordination effect to deteriorate, so that the cell edge user changes, and the edge frequency resource is
- the scheduling is more flexible and reasonable, and the efficiency of inter-cell interference coordination is improved.
- the present invention can be implemented by hardware, or can be realized by means of software plus necessary general hardware platform, the present invention.
- the technical solution can be embodied in the form of a software product, which can be stored in a computer readable storage medium (which can be a CD-ROM, a USB flash drive, a mobile hard disk, etc.), and includes a plurality of instructions for making a computer device (may be a personal computer, server, or network device, etc.) Perform the methods described in various embodiments of the present invention.
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Abstract
公开了频带划分的方法、装置和基站,包括:获取小区的小区负载;根据所述小区负载划分所述小区的小区边缘频带范围。本发明实施例还公开了相应的装置和基站。通过实施本发明实施例,使小区的中心区域的用户和小区边缘的用户的服务质量都得到满足。
Description
说明书 频带划分的方法、 装置和基站
[1] 本申请要求了 2008年 9月 10日提交的、 申请号为 200810198462.3、 发明名称为" 频带划分的方法、 装置和基站"的中国申请的优先权, 其全部内容通过引用结合 在本申请中。
[2] 技术领域
[3] 本发明涉及移动通信应用领域, 尤其涉及频带划分的方法、 装置和基站。
[4] 发明背景
[5] 长期演进系统 (Long Term
Evolution, LTE) 的物理层釆用正交频分复用技术 (Orthogonal Frequency
Division
Multiplexing, OFDM) , 各小区使用全部可用频带。 小区边缘信号比较弱, 小 区边缘的用户需要较大的发射功率, 这样就对邻接小区造成较大的干扰, 并且 , 小区边缘的用户离邻区更近, 也更容易受邻区用户和基站的下行干扰。 因此 , 相邻接小区在小区边缘如果使用相同的频带, 将造成较大的小区间干扰。 对 于导频和控制信道, LTE通过使用不同的码字, 进行小区间干扰随机化, 所以导 频和控制信道的小区间干扰影响不大。 但对于共享信道, 就必须通过协调小区 间边缘用户使用的吋频资源和功率控制, 来降低小区间的干扰, 提高系统性能
[6] 在下行干扰协调方面, 目前借用软频率复用的思想, 将用于小区中心的频率资 源和用于小区边缘的频率资源区分幵来, 使得相邻接小区在两者的边缘使用不 同频率层的载波, 以此来消除小区边缘的干扰问题。
[7] 小区间的行干扰和用户的分布情况密切相关, 某个边缘用户对其服务小区的一 个小区边缘有较大的干扰, 但可能对其服务小区的另一个邻区的干扰很小, 所 以, 行干扰协调需要针对不同的边缘用户, 判断其邻接小区, 以此为依据, 进 行相应的操作。 为了使得基于软频率复用思想的干扰协调策略能够实现, 在实 现过程中定义了高干扰指示 (High Interference
Indication, HIl) 禾口过载指示 (Overload
Indication, 01) 消息体, 通过定义的消息体在小区之间传递信息。
[8] —个小区通过 ΗΠ消息向不同邻区传送信息, 告知其邻接小区, 该小区哪些物 理资源块 (Physical Resource
Block, PRB) 是容易受干扰的, 也即用于该小区的小区边缘的资源。 针对每个 P RB都对应一个位域 (bitmap) 用来标识该 PRB的性能, 如果位域取值为 "0", 即 该 PRB不是高干扰 PRB , 邻接小区可以将该 PRB用在自己的边缘; 如果位域取值 为 "1", 即该 PRB是高干扰 PRB , 邻接小区最好不要在边缘调度该 PRB。 一个小 区通过 01消息向所有邻区发送信息, 告知其邻接小区, 该小区 PRB所受干扰的程 度, 该 PRB受干扰的程度被分成高、 中、 低几个等级。 通过这两个消息的交互, 小区之间就可以确定对方频带资源的分布, 达到频率资源在小区之间的复用, 尽量避免小区间的干扰。
[9] 小区通过 ΗΠ的信息告知邻区其用于小区边缘的 PRB和小区中心的 PRB , 与邻接 小区错幵在边缘使用的 PRB资源。 当边缘 PRB不够使用, 小区中的资源干扰增加 吋, 再次触发 HII的传递, 增加边缘 PRB的分配, 反之减少 PRB在边缘的分配。
[10] 在实现本发明实施例的过程中, 发明人发现如果在分配的过程中将过多的频带 资源用于边缘, 必然导致小区中心的用户服务质量得不到保证, 并且本小区过 多的频带资源用于边缘, 那么其邻接小区可用于边缘的频带资源就很少, 同样 起不到最佳的频带划分目的。
[11] 发明内容
[12] 本发明实施例提供了频带划分的方法、 装置和基站, 通过本发明实施例提供的 方法, 提高了用户服务质量。
[13] 一种频带划分的方法, 包括:
[14] 获取小区的小区负载, 其中, 所述小区负载包括所述小区的小区边缘负载; [15] 根据所述小区负载, 划分所述小区的小区边缘频带使用范围。
[16] 一种装置, 所述装置包括:
[17] 获取模块, 用于获取小区的小区负载, 其中, 所述小区负载包括所述小区的小 区边缘负载;
[18] 频带划分模块, 用于根据所述获取模块获取的所述小区负载划分所述小区的小 区边缘频带使用范围。
[19] 一种基站, 该基站包括如权利要求 6-8中任意一项权利要求所述的装置。
[20] 一种计算机可读存储介质, 所述计算机可读存储介质存储计算机程序代码, 当 所述计算机程序代码被计算机执行的吋候, 所述计算机程序代码可以使得所述 计算机执行如权利要求 1至 5项中任意一项所述的方法。
[21] 通过本发明实施例, 根据小区负载为小区边缘动态配置频带使用范围, 从而不 会使过多的频带资源应用在小区边缘, 使小区中心区域的用户和小区边缘的用 户的服务质量都得到满足。
[22] 附图简要说明
[23] 图 1为本发明实施例中的网络系统图;
[24] 图 2为本发明实施例中小区所划分的小区边缘与中心区域的位置关系图;
[25] 图 3为本发明实施例中频带划分的流程图;
[26] 图 4为本发明实施例中频带划分的具体流程图;
[27] 图 5为本发明实施例中的装置结构示意图;
[28] 图 6为本发明实施例中的装置结构另一结构示意图。
[29] 实施本发明的方式
[30] 本发明实施例为小区的小区边缘配置一定使用数量的频点, 可以帮助基站在划 分边缘频带吋, 明确可用频带的范围, 避免对系统性能产生不良影响。
[31] 本发明实施例所提供的网络系统中包含有多个小区, 各个小区的边缘分布情况 如图 1中所示, 图 1中示出了四个小区, 即第一小区、 第二小区、 第三小区和第 四小区, 各个小区可以位于同一个基站中, 也可以位于不同基站中。 小区边缘 部分一般与邻接小区部分互相重叠, 如第一小区与第二小区形成的小区边缘 A, 第一小区与第三小区形成的小区边缘 B , 第一小区与第四小区形成的小区边缘 C , 下面称小区边缘八、 小区边缘 B和小区边缘 C为第一小区的子小区边缘, 即小 区边缘由子小区边缘组成。
[32] 在每一个小区中都配置了小区边缘的使用频带范围, 这里主要以第一小区为例 进行说明。 图 2示出了第一小区中的小区边缘和中心区域的关系, 将第一小区的
区域划分为小区边缘和小区中心。 在该小区内为小区边缘配置有一定数量的频 带使用率, 该配置的方法可以通过固定配置的频带, 如一个固定频带全部都使 用在该小区边缘, 也可以通过门限值进行设置, 该门限值即为一个比例数, 即 该小区边缘使用的频率占小区总的频带的比例。 该小区边缘配置的频带在基站 初始建造吋配置, 或者为小区分配频带吋初始配置。 在具体实施过程中, 也可 以根据小区边缘负载和该小区总负载的大小关系重新配置一个频带。
[33] 下面结合系统图 1和 2说明本发明实施例中的实现方法, 图 3示出了本发明实施 例中的频带划分的第一流程图, 具体步骤如下:
[34] 步骤 S301 : 获取第一小区的小区负载;
[35] 步骤 S302: 根据小区负载划分第一小区的小区边缘的频带。
[36] 通过上述方法的实现, 可以根据小区边缘负载状态控制所在小区边缘的频带使 用范围, 满足小区内中心区域与小区边缘的频带使用, 使小区内服务质量到达 最佳。
[37] 图 4示出了本发明实施例中的频带划分的具体流程图, 最开始为小区的小区边 缘频带划分了初始的使用频带范围, 在使用的过程中, 需要结合小区总负载和 小区边缘负载关系来优化边缘频带的使用范围, 具体步骤如下:
[38] 步骤 S401 : 为小区上的边缘区域预先设置一定数量的频带使用范围;
[39] 本实施例中, 下面结合第一小区进行说明, 在初始配置第一小区的小区边缘的 频带吋, 为子小区边缘 A分配频带 1、 频带 2和频带 3 ; 为子小区边缘 B分配频带 4 和频带 5 ; 为子小区边缘 C分配频带 6。 同样的, 每个小区为小区边缘配置频带吋 , 都为各子小区的小区边缘配置一个频带使用范围。 在具体实现中, 还可以根 据小区的所使用的总频带划分, 设置一个门限值, 即一个约束比例, 即给小区 边缘分配总频带的部分频带, 例如, 第一小区中的该门限值为 0.5, 则该小区的 小区边缘只能使用该小区总频带的一半频带, 当该小区边缘的频带达到小区总 频带的一半吋, 为了保证中心区域的用户的服务质量, 小区不再为小区边缘的 用户提供更多的使用频带。
[40] 本实施例中配置的小区边缘的频带使用范围是初始配置的值, 可能不是一个最 佳的值, 因此需要结合小区边缘负载和小区总负载的关系状态来进一步优化小
区边缘的频带使用范围。
[41] 步骤 S402: 获取小区边缘负载以及小区总负载;
[42] 本实施例中, 可以通过设置定吋器的方式来获取小区边缘负载以及小区总负载 , 在设置的定吋吋间到达吋进行检测、 计算小区边缘负载状态和小区总负载状 态; 或者当状态基站发现某个小区的边缘干扰超过预设的门限值吋, 需要重新 划分频率使用范围满足系统需求, 则触发统计小区边缘和小区的负载状态, 其 中, 小区边缘干扰的预设门限值可以根据具体系统需求设置, 本发明实施例不 做具体限定。
[43] 小区总负载状态一般通过小区内的 PRB使用率来体现, 对于只用于上行的小区 间干扰协调, 只需要统计上行的负载信息。 小区总负载状态最终可以用一个归 一化的值来衡量。 对于小区边缘负载状态, 可以用该小区分配在本小区的小区 边缘的 PRB的使用率来统计, 这些 PRB是本小区的 PRB , 具体的可以根据第一小 区中的频带 1、 频带 2、 频带 3、 频带 4、 频带 5和频带 6的 PRB使用率来衡量。 小区 边缘负载可以用同样的方法获取一个归一化的值来衡量。 在对小区总负载状态 和小区的边缘负载状态根据两个归一化值衡量后, 即可判断负载间的大小关系
[44] 步骤 S403: 判断小区边缘负载与小区总负载大小关系;
[45] 本实施例中, 如果小区边缘负载大于小区总负载, 则进行步骤 S404; 如果小区 边缘负载与小区总负载相等吋, 进行步骤 S405 ; 如果小区边缘负载小于小区总 负载吋, 进行步骤 S406。
[46] 步骤 S404: 增加小区边缘可以使用的频率范围;
[47] 本实施例中, 对于只是划分了固定的使用频带吋, 可以为小区边缘分配更多的 使用频带, 对于用门限值进行约束的情况, 可以提高该门限值, 提高小区边缘 频带的使用范围。
[48] 步骤 S405: 不调整小区边缘可以使用的频率范围;
[49] 步骤 S406: 减少小区边缘可以使用的频率范围。
[50] 本实施例中, 对于只是划分了固定的使用频带吋, 可以为小区边缘分配更少的 使用频带, 对于用门限值进行约束的情况, 可以减少该门限值, 减少小区边缘
频带的使用范围。
[51] 步骤 S404与步骤 S406中的划分可以以一个或者多个 PRB为调整步长, 主要根据 小区边缘负载与小区总负载的差值而定。 在重新划分频带的使用范围后, 第一 小区与各邻区使用的边缘频带在新的使用范围内协调, 在对小区边缘的频带调 整过程中, 不会影响到小区整体的性能。
[52] 需要说明的是, 在小区边缘的频带调整过程中, 可以设置调整的最高门限值和 最低门限值, 该最高门限值是为了约束无限制的调高, 该最低门限值是为了约 束无限制的调低, 即在调整过程中已经到达最高门限值或最小门限值吋, 为了 保证中心区域的服务质量, 不再对边缘区域增加或者减少划分的频带范围。
[53] 需要说明的是, 如果对小区的划分只存在小区边缘和中心区域, 那么也可以根 据小区边缘负载状态来划分中心区域的频带使用范围, 使中心区域满足该使用 范围的约定, 从而满足系统服务质量的要求。 在具体实施中, 也可以获取中心 区域的负载状态, 通过中心区域的负载状态与小区边缘负载状态进行比较对小 区边缘进行频带划分, 具体的划分方法与上述根据小区边缘负载和小区总负载 来划分小区边缘的频带使用范围的方法类似, 在此不再赞述。
[54] 优选地, 本发明实施例在确定小区边缘的频率使用范围后, 当各个子小区边缘 的干扰发生改变吋, 可以在小区边缘的范围内对各子小区边缘的频率使用范围 进行协调, 此吋本发明实施例还包括步骤: 根据划分的频带使用范围协调各个 边缘区域的频带使用情况。 具体地, 在为小区边缘的用户提供服务的过程中, 第一小区与各邻接小区通过 HII交互信息, 从而各小区能够获取各自小区边缘使 用的频带的信息。 当小区边缘用户在不同区域内分布有变化吋, 各子小区边缘 所使用的边缘频带资源可以重新划分, 该划分只是在小区边缘的频带范围内进 行划分, 在进行划分的同吋, 需要通过 ΗΠ消息通知相应的邻区。 例如, 如果子 小区边缘 C的边缘用户增多, 干扰增加, 需要增加边缘频带的划分, 而子小区边 缘 A的边缘用户不多, 干扰很小, 这吋就可以将划分给子小区边缘 A的频带资源 给小区边缘 C来使用, 如将频带 1划为子小区边缘 C, 这里第一小区也需要发送 HI I消息通知第二小区和第四小区各自子小区边缘的新的频带使用范围。
[55] 这样在每个边缘区域, 在划分的频带使用范围内调节子小区边缘的频带使用范
围, 通过协调小区边缘间的频带使用情况, 使划分给小区边缘的频带资源更加 合理的使用, 满足边缘区域的用户需求, 提高了边缘区域的服务质量。
[56] 相应的, 图 5示出了本发明实施例中的装置结构示意图, 该装置包括获取模块 5 01和频带划分模块 502, 其中: 获取模块 501用于获取小区负载, 这里的小区负 载包括小区的边缘负载以及小区总负载, 或者小区的边缘负载和小区中心区域 负载, 频带划分模块 502用于根据获取模块 501获取的小区负载划分小区的小区 边缘频带范围。
[57] 根据所述设备, 根据每一小区的小区边缘负载为小区的小区边缘配置一定的频 带使用份额, 明确了小区边缘的可用的使用频率范围, 小区在小区边缘使用配 置的频带使用份额为小区边缘的用户设备提供服务, 使小区的中心区域的用户 和小区边缘的用户的服务质量都得到满足。 通过上述配置的频率使用份额的限 制, 不会使过多的频带资源应用在小区边缘, 从而可以满足邻接小区在该边缘 的频带资源配置。 该设备可以是基站或者基站控制器等, 用于管理小区频带资 源的设备。
[58] 具体的, 本发明实施例还提出了装置的另一结构示意图, 如图 6中所述, 具体 包括获取模块 601、 频带划分模块 602和协调模块 603, 其中:
[59] 获取模块 601, 用于获取小区负载, 具体的, 小区负载可以是小区边缘负载和 小区总负载, 或者是小区边缘负载和小区中心区域负载, 获取的方法可以是: 周期性获取小区负载, 或者当小区边缘干扰超过预设门限吋获取小区负载。 具 体地, 获取单元 601, 用于根据物理资源块的使用率获取小区负载。
[60] 频带划分模块 602, 用于根据获取模块 601获取的小区负载信息划分小区的小区 边缘划分频带范围。 具体地, 频带划分模块 602用于当获取单元 601获取的小区 边缘负载大于小区总负载或小区中心区域负载吋, 增加小区的小区边缘划分的 频带使用范围, 还用于当获取单元 601获取的小区边缘负载小于小区总负载或小 区中心区域负载吋, 减少小区的小区边缘划分的频带使用范围。 如果获取单元 6 01获取的小区边缘负载与小区总负载或小区中心区域负载相同, 则不需要对小 区边缘负载的频带范围做出调整。 获取单元 601, 进一步用于获取所述小区边缘 所在的各邻接小区发送的各子小区边缘的高干扰指示信息。
[61] 协调模块 603, 用于根据获取单元 601获取的高干扰指示信息在所述频带划分模 块所划分的频带范围内协调所述各子小区边缘的频带范围。 具体的, 各子小区 边缘所在的各个小区之间交互各子小区边缘的高干扰指示信息, 其中, 小区边 缘包含各个子小区边缘, 根据交互的高干扰指示信息在小区边缘的频带范围内 协调各子小区边缘的频带范围, 当交互的高干扰指示信息中表示子小区边缘的 干扰增加吋, 在小区边缘的频带范围内增加该子小区边缘的频带范围。
[62] 本发明实施例还提供了一种基站, 该基站包括如上所述的装置。
[63] 综上所述, 根据每一小区的小区边缘负载为小区的小区边缘配置一定的频带使 用份额, 明确了小区边缘的可用使用频率范围, 小区在小区边缘使用配置的频 带份额为小区边缘的用户设备提供服务, 使小区的中心区域的用户和小区边缘 的用户的服务质量都得到满足。 通过该配置频率的限制, 不会使过多的频带资 源应用在小区边缘, 从而可以满足邻接小区在该边缘的频带资源配置。 在一个 小区边缘范围内, 可以通过协调小区与邻接小区所在小区边缘划分的频率为用 户提供服务, 避免了盲目调整而导致干扰协调效果的恶化, 使得小区边缘用户 发生变化吋, 对边缘频率资源的调度更加灵活和合理, 提高了小区间干扰协调 的效率。
[64] 通过以上的实施方式的描述, 本领域的技术人员可以清楚地了解到本发明可以 通过硬件实现, 也可以可借助软件加必要的通用硬件平台的方式来实现基于这 样的理解, 本发明的技术方案可以以软件产品的形式体现出来, 该软件产品可 以存储在一个计算机可读存储介质 (可以是 CD-ROM, U盘, 移动硬盘等) 中, 包括若干指令用以使得一台计算机设备 (可以是个人计算机, 服务器, 或者网 络设备等) 执行本发明各个实施例所述的方法。
以上所述, 仅为本发明较佳的具体实施方式, 但本发明的保护范围并不局限于 此, 任何熟悉本技术领域的技术人员在本发明揭露的技术范围内, 可轻易想到 的变化或替换, 都应涵盖在本发明的保护范围之内。 因此, 本发明的保护范围 应该以权利要求的保护范围为准。
Claims
[1] 一种频带划分的方法, 其特征在于, 包括:
获取小区的小区负载, 其中, 所述小区负载包括所述小区的小区边缘负载 根据所述小区负载, 划分所述小区的小区边缘频带使用范围。
[2] 如权利要求 1所述的方法, 其特征在于, 所述小区负载还包括:
所述小区的小区总负载; 或者,
所述小区的小区中心区域负载。
[3] 如权利要求 1或 2所述的方法, 其特征在于, 所述获取小区负载包括:
周期性获取所述小区负载; 或
当所述小区的小区边缘的干扰超过预设门限吋, 获取所述小区负载。
[4] 如权利要求 3权利要求所述的方法, 其特征在于, 所述根据所述小区负载划 分所述小区的小区边缘频带使用范围包括:
当所述小区边缘负载大于所述小区总负载或小区中心区域负载吋, 增加所 述小区边缘的频带使用范围; 或
当所述小区边缘负载等于所述小区总负载或小区中心区域负载吋, 不调整 所述小区边缘的频带使用范围; 或
当所述小区边缘负载小于所述小区总负载或小区中心区域负载吋, 减小所 述小区边缘的频带使用范围。
[5] 如权利要求 4任意权利要求所述的方法, 其特征在于, 所述方法还包括: 所述小区和所述小区边缘所在的各邻接小区交互各子小区边缘的高干扰指 示信息, 所述小区边缘包含所述各子小区边缘;
根据所述高干扰指示信息在所述小区边缘的频带使用范围内协调所述各子 小区边缘的频带使用范围。
[6] 一种装置, 其特征在于, 所述装置包括:
获取模块, 用于获取小区的小区负载, 其中, 所述小区负载包括所述小区 的小区边缘负载;
频带划分模块, 用于根据所述获取模块获取的所述小区负载划分所述小区
的小区边缘频带使用范围。
[7] 如权利要求 6所述的装置, 其特征在于, 所述获取模块还用于获取所述小区 的小区总负载; 或者, 还用于获取所述小区的小区中心区域负载。
[8] 如权利要求 7所述的装置, 其特征在于, 所述频带划分模块进一步用于当所 述判获取单元获取的所述小区边缘负载大于所述小区总负载或小区中心区 域负载吋, 增加所述小区的小区边缘划分的频带使用范围, 还用于当所述 获取单元获取的所述小区边缘负载小于所述小区总负载或小区中心区域负 载吋, 减少所述小区的小区边缘划分的频带使用范围。
[9] 如权利要求 6-8任意权利要求所述的装置, 其特征在于, 所述获取单元, 还 用于获取所述小区边缘所在的各邻接小区发送的各子小区边缘的高干扰指 示信息, 所述小区边缘包含所述各子小区边缘;
所述装置还包括: 协调模块, 用于根据所述获取单元获取的所述高干扰指 示信息在所述频带划分模块所划分的频带使用范围内协调所述各子小区边 缘的频带使用范围。
[10] 一种基站, 其特征在于, 该基站包括如权利要求 6-8中任意一项权利要求所 述的装置。
[11] 一种计算机可读存储介质, 其特征在于, 所述计算机可读存储介质存储计 算机程序代码, 当所述计算机程序代码被计算机执行的吋候, 所述计算机 程序代码可以使得所述计算机执行如权利要求 1至 5项中任意一项所述的方 法。
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| EP2679071A4 (en) * | 2011-02-23 | 2016-01-20 | Nec Corp | RADIO RESOURCE RANGE DEFINITION DEVICE, RADIO RESOURCE RANGE DEFINITION METHOD, AND RECORDING MEDIUM |
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| CN101730110B (zh) * | 2009-12-31 | 2012-05-23 | 上海华为技术有限公司 | 边缘频带资源分配方法、装置及基站 |
| CN102340859B (zh) * | 2010-07-26 | 2016-01-13 | 北京邮电大学 | 上行干扰协调方法和设备 |
| CN102413477B (zh) * | 2010-09-20 | 2014-06-04 | 大唐移动通信设备有限公司 | 一种小区间干扰协调的模拟方法及设备 |
| CN102413499B (zh) * | 2010-09-20 | 2014-09-10 | 大唐移动通信设备有限公司 | 一种小区间干扰协调的模拟方法及设备 |
| CN102036250B (zh) * | 2010-12-28 | 2013-09-25 | 华为技术有限公司 | 一种上行频带资源的动态分配方法及基站 |
| CN103338455B (zh) * | 2013-06-07 | 2017-06-27 | 华为技术有限公司 | 通信资源分配方法、系统、终端及网络侧设备 |
| US9258098B2 (en) * | 2013-07-20 | 2016-02-09 | Cisco Technology, Inc. | Exclusive and overlapping transmission unit allocation and use in a network |
| CN105101221B (zh) * | 2014-05-20 | 2018-09-14 | 普天信息技术有限公司 | 一种lte系统动态干扰协调方法和装置 |
| CN104219676B (zh) * | 2014-08-26 | 2017-10-10 | 江苏省邮电规划设计院有限责任公司 | 一种td‑lte基于单站业务量的动态频率复用方法 |
| CN106358306B (zh) * | 2015-07-17 | 2019-09-17 | 普天信息技术有限公司 | 一种边缘频带动态划分方法及装置 |
| CN106658552B (zh) * | 2015-10-30 | 2019-09-17 | 普天信息技术有限公司 | 干扰管理方法、系统 |
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| CN101110659A (zh) * | 2006-07-17 | 2008-01-23 | 华为技术有限公司 | 分配小区频带的方法及其网络设备 |
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| CN101110659A (zh) * | 2006-07-17 | 2008-01-23 | 华为技术有限公司 | 分配小区频带的方法及其网络设备 |
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