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WO2013060159A1 - 一种基带资源动态共享的方法及装置 - Google Patents

一种基带资源动态共享的方法及装置 Download PDF

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Publication number
WO2013060159A1
WO2013060159A1 PCT/CN2012/077804 CN2012077804W WO2013060159A1 WO 2013060159 A1 WO2013060159 A1 WO 2013060159A1 CN 2012077804 W CN2012077804 W CN 2012077804W WO 2013060159 A1 WO2013060159 A1 WO 2013060159A1
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Prior art keywords
cell
baseband
resource
allocation
threshold
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English (en)
French (fr)
Inventor
陶敬
王炎
李辉
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ZTE Corp
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ZTE Corp
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/14—Spectrum sharing arrangements between different networks

Definitions

  • the present invention relates to resource sharing technologies in mobile communications, and in particular to a method and apparatus for dynamically sharing baseband resources in a base station system. Background technique
  • BBU Baseband Unit
  • RRU Remote Radio Unit
  • the existing baseband resource allocation method is usually configured according to the maximum service capacity of the cell, but in reality, most of the time, the service cannot reach the maximum service capacity, and thus, most of the time is caused.
  • the baseband resources of some cells in the room are wasted, and at the same time, the other base cells may have insufficient baseband resources.
  • the main purpose of the present invention is to provide a method and an apparatus for dynamically sharing baseband resources, which can enable baseband resources to be shared among cells, and dynamically allocated according to actual demand of baseband resources of each cell, so that baseband resources between cells are enabled. Maximize utilization and save baseband resources.
  • the present invention provides a method for dynamically sharing baseband resources in a base station system, the method comprising: allocating initial baseband resources for carrier frequencies of each cell; determining cells that need to allocate or release baseband resources according to actual demand conditions of baseband resources of each cell And the carrier frequency; the baseband resources of the determined carrier frequency are allocated or released for the cell.
  • the method before the initial baseband resource is allocated to the carrier frequency of each cell, the method further includes: obtaining a priority of each carrier frequency, and determining, according to the obtained carrier frequency priority of each cell and a preset allocation rule.
  • the carrier frequency of the cell allocates baseband resources.
  • the method further includes: setting a normal allocation threshold and a normal release threshold, and setting a cycle timer;
  • the loop timer expires and the requirement of the baseband resource of the cell reaches the common allocation threshold, it is determined that the baseband resource needs to be allocated to the corresponding cell.
  • the loop timer expires and the requirement of the baseband resource of the cell reaches the normal release threshold, it is determined that The corresponding cell releases the baseband resources.
  • the method further includes: setting an emergency allocation threshold and an emergency release threshold; determining that the baseband resource needs to be urgently allocated for the corresponding cell when the demand for the baseband resource of the cell reaches the emergency allocation threshold; When the threshold is released, it is determined that the baseband resource needs to be urgently released for the corresponding cell.
  • the present invention also provides an apparatus for dynamically sharing a baseband resource in a base station system, where the apparatus includes: a resource module, a service module, and an allocation module; a resource module, including all baseband resources required for execution of the business process, for allocation or release by the assigned module;
  • a service module configured to determine, according to actual demand conditions of the baseband resources of each cell, a cell and a carrier frequency that need to allocate or release the baseband resource, and initiate a request to the allocation module, and the cell and the carrier frequency notification allocation module that need to allocate or release the baseband resource ;
  • an allocation module configured to allocate initial baseband resources for carrier frequencies of each cell; and after receiving the request of the service module, allocate or release baseband resources of the determined carrier frequency for the cell.
  • the service module is configured with a common allocation threshold, a normal release threshold, and a loop timer.
  • the service module is further configured to: when the loop timer expires, if the requirement of the baseband resource of the cell reaches a common allocation threshold.
  • the normal release threshold request to allocate or release the required baseband resources for the corresponding cell.
  • the service module is configured with an emergency allocation threshold and an emergency release threshold.
  • the service module is further configured to request emergency allocation of the corresponding cell when the demand of the baseband resource of the cell reaches an emergency allocation threshold or an emergency release threshold. Or the baseband resources needed for emergency release.
  • the resource module is further configured to notify the allocation module of whether the baseband resource is successfully allocated or released when the baseband resource is allocated or released.
  • the allocation module is further configured to acquire a priority of a carrier frequency of each cell, and allocate a baseband resource to a carrier frequency of each cell according to the obtained priority of each carrier frequency and a preset allocation rule.
  • the method and device for dynamically sharing a baseband resource introduces a concept of a dynamic baseband resource pool, and does not use the prior art to permanently allocate a baseband resource carrying a maximum service capacity for each cell, but according to the traffic volume of each cell.
  • the actual requirements dynamically configure the corresponding baseband resources, so that the baseband resources are dynamically shared between the cells, so as to maximize the utilization of the baseband resources between the cells, thereby solving the problem that some baseband resources are wasted while other baseband resources are insufficient; Can save costs.
  • the baseband resource can be dynamically allocated through the baseband pool, and the normal baseband resources are allocated to the corresponding cell of the faulty baseband processing board, and the faulty baseband processing board is retired, so that the base station can be made.
  • the system is very fault tolerant.
  • FIG. 1 is a schematic diagram of the tide traffic phenomenon
  • FIG. 2 is a schematic flowchart of an implementation process of a baseband resource dynamic sharing method according to the present invention
  • FIG. 3 is a schematic structural diagram of a baseband resource dynamic sharing device according to the present invention.
  • FIG. 4 is a schematic structural diagram of an application environment of a method for dynamically sharing a baseband resource according to an embodiment of the present invention
  • FIG. 5 is a schematic flowchart of an implementation of an embodiment of a method for dynamically sharing a baseband resource according to the present invention.
  • the basic idea of the present invention is: Introduce a dynamic baseband resource pool, dynamically configure corresponding baseband resources according to the actual demand of each cell traffic, so that baseband resources are dynamically shared between cells.
  • FIG. 2 is a flowchart showing an implementation process of a method for dynamically sharing a baseband resource according to the present invention. As shown in FIG. 2, the method includes the following steps:
  • Step 201 Allocating initial baseband resources for carrier frequencies of each cell;
  • the allocating the initial baseband resource may be to allocate the initial baseband resource for the carrier frequency carrying the maximum traffic amount in the existing manner; or to allocate the initial baseband to the preset carrier frequency not less than the minimum traffic volume.
  • Resources For example, if the maximum traffic of cell A requires 20 carrier frequencies and the minimum traffic requires 6 carrier frequencies, then the initial baseband resources may be allocated for 20 carrier frequencies first, or the bearer traffic may be greater than Equal to 6, the preset carrier frequency is allocated initial baseband resources, such as: The initial baseband resources are allocated for 10 carrier frequencies.
  • baseband resources may be allocated according to different priorities of carrier frequencies of respective cells and pre-set allocation rules. Specifically, priority of carrier frequencies of each cell is obtained first, and then according to obtained carrier frequency of each cell. Priority and pre-set allocation rules for the carrier frequency allocation base of each cell With a resource; where, each cell includes more than two cells; the preset allocation rule may be cell polling, or cell preference, and the like.
  • Step 202 Determine, according to actual demand conditions of the baseband resources of each cell, a cell and a carrier frequency that need to allocate or release baseband resources.
  • the actual demand situation of the baseband resources of each cell may be obtained based on the cell traffic statistics method or the channel occupancy method, but is not limited to the above two methods.
  • the BTS detects the current traffic or channel occupancy of each cell in real time and reports it to the base station controller (BSC, Base Station).
  • the controller determines, according to the traffic volume or channel occupancy, the current baseband resource requirement of each cell, and determines and requests the BTS to allocate or release the carrier frequency of the baseband resource according to the baseband resource requirement of each cell.
  • the office area and the residential area are allocated 10 baseband resources of the carrier frequency.
  • the BSC will notify the BTS.
  • the baseband resources of the four carrier frequencies allocated to the cells corresponding to the office area are released, and the baseband resources of the four carrier frequencies released by the office area are allocated to the cells corresponding to the residential area.
  • two thresholds may be set in advance: a common allocation threshold and a normal release threshold; specifically, a common allocation threshold may be set and an ordinary
  • a common allocation threshold may be set and an ordinary
  • the loop timer is set, and when the loop timer expires and the requirement of the baseband resource of the cell reaches the common allocation threshold, it is determined that the baseband resource needs to be allocated for the corresponding cell; when the loop timer expires, and the baseband resource of the cell
  • the normal release threshold it is determined that the baseband resource needs to be released for the corresponding cell; thus, the baseband resource and the baseband resource are frequently allocated in the case of temporary traffic fluctuation.
  • the loop timer is also reset.
  • the other two thresholds may be set: an emergency allocation threshold and an emergency release threshold; further, when the demand for the baseband resource of the cell reaches the emergency allocation threshold, it is determined that the baseband resource needs to be urgently allocated for the corresponding cell; When the demand situation of the baseband resource reaches the emergency release threshold, it is determined that the baseband resource needs to be urgently released for the corresponding cell.
  • the emergency allocation threshold is greater than the normal allocation threshold; the emergency release threshold is greater than the normal release threshold.
  • Step 203 Allocate or release a baseband resource of the determined carrier frequency for the cell.
  • the cell is a cell in step 202 that needs to allocate or release baseband resources.
  • the present invention further provides a baseband resource dynamic sharing device.
  • the device includes: a resource module 31, a service module 32, and an allocation module 33.
  • the resource module 31 includes a service flow execution. All baseband resources required at the time, equivalent to a dynamic baseband resource pool, for allocation or release by the allocation module 33;
  • the service module 32 is configured to determine, according to the actual demand situation of the baseband resources of each cell, a cell and a carrier frequency that need to allocate or release the baseband resource, and initiate a request to the allocating module 33, and notify the cell and the carrier frequency that need to allocate or release the baseband resource.
  • the request for allocating the baseband resource is initiated to the allocating module 33; when the cell does not need the baseband resource, the request for releasing the baseband resource is initiated to the allocating module 33; the request carries the need to allocate or release the baseband The cell and carrier frequency of the resource.
  • the service module 32 may set a common allocation threshold, a normal release threshold, and a loop timer; correspondingly, the service module 32 is further used in the loop.
  • the timer expires, if the requirement of the baseband resource of the cell reaches the normal allocation threshold or the normal release threshold, the request is to allocate or release the required baseband resource for the corresponding cell.
  • the service module 32 may also set two other thresholds: an emergency allocation threshold and an emergency release threshold; correspondingly, the service module 32.
  • the method is further configured to: when the demand for the baseband resource of the cell reaches the emergency allocation threshold, request the emergency allocation of the required baseband resource for the corresponding cell; when the demand for the baseband resource of the cell reaches the emergency release threshold, request the emergency release of the corresponding cell. Baseband resources required.
  • the allocating module 33 is configured to allocate initial baseband resources for the carrier frequency of each cell; after receiving the request of the service module 32, allocate or release the baseband resource of the determined carrier frequency for the cell; wherein, the cell is a service module 32 determined cells that need to allocate or release baseband resources.
  • the resource module 31 is further configured to notify the allocation module 33 of whether the baseband resource is successfully allocated or released when the baseband resource is allocated or released;
  • the resource module 31 is further configured to report the change of the baseband resource to the service module 32 when the baseband resource is allocated or released.
  • the allocating module 33 is further configured to obtain a priority of a carrier frequency of each cell, and allocate a baseband resource to a carrier frequency of each cell according to the obtained priority of each carrier frequency and a preset allocation rule.
  • FIG. 4 and FIG. 5 respectively show an application environment component mechanism and an implementation process according to an embodiment of the present invention. This embodiment is implemented based on the GSM system.
  • the GSM system includes a BTS 402 and a BSC 401.
  • the BTS 402 further includes a BBU and an RRU.
  • the service module is implemented by the BSC 401, and the allocation module and the resource module are implemented by the BTS 402.
  • the BSC 401 is configured to determine, according to an actual demand situation of the baseband resources of each cell, a cell and a carrier frequency that need to allocate or release the baseband resource, and initiate a baseband resource allocation or release request to the BTS 402, which needs to be allocated or released.
  • the cell and carrier frequency of the baseband resource is notified to the BTS 402; wherein, the actual demand situation refers to: statistics on cell traffic, or statistics on channel occupancy.
  • the BTS 402 is configured to allocate initial baseband resources for carrier frequencies of each cell; after receiving the request of the BSC 401, allocate or release baseband resources of the determined carrier frequency for cells requiring baseband resources; The current traffic or channel occupancy of each cell is detected and reported to the BSC 401.
  • the BTS 402 will assign the release or release success to the BSC 401.
  • the baseband resources can be shared between different RBR sites in different cells under the same BTS site.
  • the dynamic sharing function of the baseband resource may be a software module, and the software module may belong to the BBU software system in part, and the other part belongs to the BSC software system, that is, one part is implemented in the BBU of the BTS, and the other part is in the BBU.
  • the software modules can all belong to the BBU software system, that is, all are implemented in the BBU of the BTS.
  • the implementation process of the baseband resource dynamic sharing method in this embodiment is as shown in FIG. 5, and the method includes the following steps:
  • Step 501 Acquire a carrier frequency priority of each cell before initially allocating baseband resources; where, it may be two or more cells.
  • Step 502 Allocate initial baseband resources for carrier frequencies of each cell according to the obtained carrier frequency priority and a preset preset rule.
  • the initial baseband resource may be allocated for the carrier frequency of each cell carrying the maximum traffic; the initial baseband resource may also be allocated for the carrier frequency of each cell not less than the minimum requirement.
  • Steps 503 - 510 The current baseband resource requirement of each cell is counted, and according to the set threshold and the round-robin timer, it is determined whether the baseband resource needs to be allocated or released for the cell.
  • the loop timer is only used for the normal allocation threshold and the normal release threshold to determine whether the baseband resource needs to be allocated or released when the loop timer expires.
  • the emergency allocation threshold and the emergency release threshold are specifically set for emergency or emergency events. Therefore, it is not limited by the loop timer, ie: it is independent of the loop timer setting.
  • a loop timer, a normal allocation threshold, a normal release threshold, an emergency allocation threshold, and an emergency release threshold may be preset.
  • a general setting can be set as needed.
  • One of the distribution threshold and the normal release threshold, the emergency allocation threshold, and the emergency release threshold, or both groups are set; and when the normal allocation threshold and the normal release threshold are set, the cycle timer is set at the same time.
  • the current baseband resource requirement of each cell may be calculated according to the algorithm of the traffic volume of the cell, for example, calculating the traffic volume by using the traffic channel (TCH, Traffic Channel) occupation time/available TCH number*900;
  • the channel occupancy method can be used for statistics, such as: the ratio of the number of occupied TCHs to the number of available TCHs within 15 minutes, but is not limited to the above two statistical methods.
  • the step of determining whether a baseband resource needs to be allocated or released for a cell includes:
  • the loop timer For the common allocation threshold and the normal release threshold, since the loop timer is set at the same time, if the loop timer expires, the subsequent operation is performed. If the loop timer expires, it is determined whether the demand of the baseband resource reaches the normal allocation threshold. If the normal release threshold is reached, the required baseband resources are allocated for the carrier frequency of the corresponding cell. If the normal release threshold is reached, the required baseband resources are released for the carrier frequency of the corresponding cell. If the loop timer has not timed out, it continues to wait for the loop timer to time out; if the loop timer expires and does not reach any of the thresholds, no processing is performed.
  • step 505 and step 506 are directly executed after step 503, respectively, Whether the emergency allocation threshold is reached and whether the emergency release threshold is reached. If the emergency allocation threshold is reached, the required baseband resources are allocated for the carrier frequency of the corresponding cell; if the emergency release threshold is reached, the required baseband resources are released for the carrier frequency of the corresponding cell. .
  • one or more of the above four thresholds may be determined according to actual needs, and may be judged sequentially or simultaneously.
  • the baseband resource when determining that the baseband resource needs to be allocated to the cell, it is also necessary to determine whether there are enough baseband resources in the dynamic baseband resource pool for allocation, and if there are enough free baseband resources, The corresponding baseband resources are directly allocated. If there is not enough free baseband resources, it can be determined whether there is a baseband resource that currently reaches the emergency release threshold. If yes, the baseband resources that reach the emergency release threshold are released first, and then the released baseband resources are allocated. Give the required cell, if not, return a message to the cell that the baseband resource cannot be allocated.
  • the baseband resources can be dynamically shared, thereby maximizing the utilization of the baseband resources.
  • the time-distributed traffic is unbalanced, that is, the traffic in the office area is relatively concentrated during working hours, the office traffic is lower after work, and the traffic in the residential area is rising.
  • the situation can be solved very well. Assumption: The office area and residential area need to allocate 18 carrier frequency baseband resources at the most, and at least 6 carrier frequency baseband resources need to be configured. Then, if the prior art scheme is adopted, both regions need to have the carrier frequency according to the maximum demand.
  • the corresponding baseband resources are configured, that is, the baseband resources of the 18 carrier frequencies are respectively allocated in the two regions, and the baseband resources of the carrier frequency are totaled by 36.
  • the baseband resource dynamic sharing scheme of the present invention is used to configure the carrier baseband resources of the two regions.
  • the sum of the maximum values of the baseband resources of the carrier frequency required for the two regions at the same time may be: baseband resources of 18 carrier frequencies in the office area during working hours, and baseband resources of 6 carrier frequencies in the residential area;
  • the base station resources of 6 carrier frequencies are allocated in the area, and the baseband resources of 18 carrier frequencies are allocated in the residential area; that is, the baseband resources of 24 carrier frequencies need to be configured.
  • the baseband resources of 12 carrier frequencies are saved, and the cost is greatly reduced; and the baseband resources of 24 carrier frequencies are maximized.

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Abstract

本发明公开了一种基站系统中基带资源动态共享的方法，包括：为各小区的载频分配初始基带资源；根据各小区基带资源的实际需求情况，确定需要分配或释放基带资源的小区和载频；为小区分配或释放所确定载频的基带资源。本发明还同时公开了一种基站系统中基带资源动态共享的装置。采用本发明的方法和装置，能使基带资源在小区间共享，并根据各小区的基带资源实际需求量，将基带资源动态分配到各小区中，使得小区间的基带资源能最大化利用，从而节省基带资源。

Description

一种基带资源动态共享的方法及装置 技术领域
本发明涉及移动通信中资源共享技术， 特别是涉及一种基站系统中基 带资源动态共享的方法及装置。 背景技术
在无线通信领域中， 通信设备正逐渐向分布式和模块化方向发展， 特 别是通用协议无线接口 （ CPRI, Common Public Radio Interface )和主动开 放基站体系 （ OBSAI, Open Base Station Architecture Initiative )等协议组织 的成立，使基带单元（ BBU, Baseband Unit )和射频单元（ RRU, Remote Radio Unit )分离的架构得到迅速发展和应用。 所谓 BBU与 RRU的分离架构， 就 是将基站收发信台 ( BTS, Base Transceiver Station )分成两个部分： BBU 和 RRU; 其中， BBU由基带处理板 ( BP, Baseband Process )组成， 多个 基带资源集中在一起， 构成一个基带资源池； RRU用于提供信号的射频处 理功能； BBU和 RRU之间采用光纤连接， 构成射频拉远系统架构。
目前， 在业界基带资源分配的方法中， 基带资源和射频资源都是静态 分配的， 基带处理设备和射频单元——对应。 而在实际网络环境中， 业务 随时间的分布是非常不平衡的， 不同小区和站点间经常会存在潮汐话务现 象， 如图 1所示， 工作时间用户大量聚集在办公区 11所在区域， 如： 中央 商务区域（CBD, Central Business District ), 而下班后大量用户又会向住宅 区 12迁移， 如此， 就会引发通信系统中大量话务量流动的现象， 使得一个 小区的最大业务量^艮可能比平均业务量大^艮多。
现有基带资源分配方法通常是按照小区最大业务容量来配置的， 但实 际上， 大多数时候业务不能达到最大业务容量， 这样， 就会导致大部分时 间内一些小区被配置的基带资源被浪费， 而同时其它小区又会出现基带资 源不足的情况。 发明内容
有鉴于此， 本发明的主要目的在于提供一种基带资源动态共享的方法 及装置， 能使基带资源在小区间共享， 并根据各小区基带资源的实际需求 量动态分配， 使得小区间的基带资源能最大化利用， 从而节省基带资源。
为达到上述目的， 本发明的技术方案是这样实现的：
本发明提供了一种基站系统中基带资源动态共享的方法， 该方法包括: 为各小区的载频分配初始基带资源； 根据各小区基带资源的实际需求 情况， 确定需要分配或释放基带资源的小区和载频； 为小区分配或释放所 确定载频的基带资源。
上述方案中， 所述为各小区的载频分配初始基带资源之前， 该方法还 包括： 获取各小区载频的优先级， 根据获得的各小区载频的优先级和预先 设置的分配规则为各小区的载频分配基带资源。
上述方案中， 该方法进一步包括： 设置普通分配门限和普通释放门限， 并设置循环定时器；
当循环定时器超时， 且小区基带资源的需求情况达到普通分配门限时， 确定需要为相应小区分配基带资源； 当循环定时器超时， 且小区基带资源 的需求情况达到普通释放门限时， 确定需要为相应小区释放基带资源。
上述方案中， 该方法进一步包括： 设置紧急分配门限和紧急释放门限； 当小区基带资源的需求情况达到紧急分配门限时， 确定需要为相应小 区紧急分配基带资源； 当小区基带资源的需求情况达到紧急释放门限时， 确定需要为相应小区紧急释放基带资源。
本发明还提供了一种基站系统中基带资源动态共享的装置， 该装置包 括： 资源模块、 业务模块、 以及分配模块； 其中， 资源模块， 包括业务流程执行时所需的所有基带资源， 用于被分配模 块分配或释放；
业务模块， 用于根据各小区基带资源的实际需求情况， 确定需要分配 或释放基带资源的小区和载频， 并向分配模块发起请求， 将需要分配或释 放基带资源的小区和载频通知分配模块；
分配模块， 用于为各小区的载频分配初始基带资源； 在收到业务模块 的请求后， 为小区分配或释放所确定载频的基带资源。
上述方案中， 所述业务模块中设置有普通分配门限、 普通释放门限、 以及循环定时器； 所述业务模块， 还用于在循环定时器超时时， 如果小区 基带资源的需求情况达到普通分配门限或普通释放门限， 则请求为相应小 区分配或释放所需的基带资源。
上述方案中， 所述业务模块中设置有紧急分配门限、 紧急释放门限； 所述业务模块， 还用于当小区基带资源的需求情况达到紧急分配门限或紧 急释放门限时， 请求为相应小区紧急分配或紧急释放所需的基带资源。
上述方案中， 所述资源模块， 还用于在基带资源被分配或释放时， 将 基带资源是否分配或释放成功的结果通知分配模块。
上述方案中， 所述分配模块， 还用于获取各小区载频的优先级， 根据 获得的各小区载频的优先级和预先设置的分配规则为各小区的载频分配基 带资源。
本发明提供的基带资源动态共享的方法及装置， 引入动态基带资源池 的概念， 不采用现有技术为每个小区固定分配承载最大业务容量的基带资 源的方式， 而是根据每个小区业务量的实际需求动态配置相应的基带资源， 使基带资源在小区间动态共享， 以实现小区间基带资源利用的最大化， 从 而解决一些小区基带资源浪费的同时， 其它小区基带资源不足的问题； 并 且， 能节省成本。 另外， 当基带处理板出现故障时， 还可以通过基带池动态调配基带资 源， 将正常的基带资源分配给故障基带处理板对应的小区， 同时将故障基 带处理板退服， 这样， 就可以使基站系统具有很好的容错性。 附图说明
图 1为潮汐话务现象示意图；
图 2为本发明基带资源动态共享方法的实现流程示意图；
图 3为本发明基带资源动态共享装置的组成结构示意图；
图 4为本发明基带资源动态共享方法一实施例应用环境的结构示意图； 图 5为本发明基带资源动态共享方法一实施例的实现流程示意图。 具体实施方式
本发明的基本思想是： 引入动态基带资源池， 根据每个小区业务量的 实际需求动态配置相应的基带资源， 使基带资源在小区间动态共享。
图 2所示为本发明基带资源动态共享方法的实现流程， 如图 2所示， 该方法包括以下步驟：
步驟 201 : 为各小区的载频分配初始基带资源；
这里， 所述分配初始基带资源可以是按现有方式先为承载最大业务量 的载频分配初始基带资源； 也可以是先为不小于承载最小业务量的、 预先 设定的载频分配初始基带资源。 举个例子来说， 假设小区 A最大业务量需 要 20个载频， 最小业务量需要 6个载频， 那么， 可以先为 20个载频都分 配初始基带资源， 也可以是为承载业务量大于等于 6、预先设定的载频分配 初始基带资源， 如： 为 10个载频分配初始基带资源。
本步驟中， 可根据各小区载频的优先级的不同、 以及预先设置的分配 规则进行基带资源的分配； 具体的， 先获取各小区载频的优先级， 再根据 获得的各小区载频的优先级和预先设置的分配规则为各小区的载频分配基 带资源； 其中， 各个小区包括两个以上小区； 所述预先设置的分配规则可 以是小区轮询、 或小区优选等等。
步驟 202: 根据各小区基带资源的实际需求情况，确定需要分配或释放 基带资源的小区和载频；
这里， 所述各小区基带资源的实际需求情况， 可以基于小区话务量统 计方法、 或信道占用方法获得， 但不限于以上两种方法。
举例来说，假设在全球移动通信系统（GSM, Global System For Mobile Communications ) 的实际应用中， BTS 会实时检测各小区当前的话务量或 信道占用， 并上报给基站控制器（BSC, Base Station Controller ), BSC根 据话务量或信道占用统计各个小区当前的基带资源需求情况， 根据各个小 区的基带资源需求确定并请求 BTS分配或释放基带资源的载频。 比如： 初 始分配时， 办公区和住宅区各分配有 10个载频的基带资源， 经过统计确定 当前办公区只需要 6个载频， 而住宅区需要 14个载频， 那么， BSC会通知 BTS释放分配给办公区所对应的小区的 4个载频的基带资源， 且再将办公 区释放的 4个载频的基带资源分配给住宅区所对应的小区。
本步驟中， 为了防止出现反复请求分配或释放基带资源的问题， 即： 避免发生乒乓现象， 可以预先设置两个门限： 普通分配门限和普通释放门 限； 具体的， 可在设置普通分配门限和普通释放门限的同时设置循环定时 器， 那么， 当循环定时器超时， 且小区基带资源的需求情况达到普通分配 门限时， 确定需要为相应小区分配基带资源； 当循环定时器超时， 且小区 基带资源的需求情况达到普通释放门限时， 确定需要为相应小区释放基带 资源； 如此， 可以避免在出现临时性业务量波动时， 频繁地分配基带资源 和释放基带资源。
进一步的， 分配或释放基带资源后， 还要重新设置循环定时器。
另外， 考虑到由于一些特殊情况， 可能使话务量或信道占用峰值突升 或突降， 因此， 还可以设置另两个门限： 紧急分配门限和紧急释放门限； 进一步的， 当小区基带资源的需求情况达到紧急分配门限时， 确定需要为 相应小区紧急分配基带资源； 当小区基带资源的需求情况达到紧急释放门 限时， 确定需要为相应小区紧急释放基带资源。
一般情况下， 紧急分配门限值大于普通分配门限值； 紧急释放门限大 于普通释放门限值。
步驟 203： 为小区分配或释放所确定载频的基带资源；
这里， 所述小区为步驟 202中确定需要分配或释放基带资源的小区。 为实现上述方法， 本发明还提供了一种基带资源动态共享装置， 如图 3 所示， 该装置包括： 资源模块 31、 业务模块 32以及分配模块 33; 其中， 资源模块 31 , 包括业务流程执行时所需的所有基带资源， 相当于动态 基带资源池， 用于被分配模块 33分配或释放；
业务模块 32, 用于根据各小区基带资源的实际需求情况， 确定需要分 配或释放基带资源的小区和载频， 并向分配模块 33发起请求， 将需要分配 或释放基带资源的小区和载频通知分配模块 33;
这里， 当确定小区需要基带资源时， 向分配模块 33发起分配基带资源 的请求； 当小区不需要基带资源时， 向分配模块 33发起释放基带资源的请 求； 请求中均携带有需要分配或释放基带资源的小区及载频。
在实际应用中， 为避免频繁请求分配或释放基带资源， 所述业务模块 32中可设置普通分配门限、 普通释放门限、 以及循环定时器； 相应的， 所述业务模块 32, 还用于在循环定时器超时时， 如果小区基带资源的 需求情况达到普通分配门限或普通释放门限， 则请求为相应小区分配或释 放所需的基带资源。
为防止话务量或信道占用峰值突升或突降， 所述业务模块 32中还可以 设置另两个门限： 紧急分配门限、 紧急释放门限； 相应的， 所述业务模块 32, 还用于当小区基带资源的需求情况达到紧急分配门限时， 请求为相应 小区紧急分配所需的基带资源； 当小区基带资源的需求情况达到紧急释放 门限时， 请求为相应小区紧急释放所需的基带资源。
所述分配模块 33, 用于为各小区的载频分配初始基带资源； 在收到业 务模块 32的请求后， 为小区分配或释放所确定载频的基带资源； 其中， 所 述小区为业务模块 32所确定的需要分配或释放基带资源的小区。
进一步的， 资源模块 31 , 还用于在基带资源被分配或释放时， 将基带 资源是否分配或释放成功的结果通知分配模块 33;
进一步的， 资源模块 31 , 还用于在基带资源被分配或被释放成功时， 将基带资源发生变化的情况上报给业务模块 32。
进一步的， 分配模块 33, 还用于获取各小区载频的优先级， 根据获得 的各小区载频的优先级和预先设置的分配规则为各小区的载频分配基带资 源。
图 4和图 5分别给出了本发明一实施例的应用环境组成机构及实现流 程， 本实施例基于 GSM系统实现。
如图 4所示， GSM系统包括 BTS 402和 BSC 401 , BTS 402进一步包 括 BBU和 RRU, 本实施例中， 业务模块由 BSC 401实现， 分配模块和资 源模块由 BTS 402实现。
具体的， 所述 BSC 401 , 用于根据各小区基带资源的实际需求情况， 确 定需要分配或释放基带资源的小区和载频， 并向 BTS 402发起基带资源分 配或释放请求， 将需要分配或释放基带资源的小区和载频通知 BTS 402; 其中， 实际需求情况是指： 对小区话务量的统计、 或对信道占用的统 计。
所述 BTS 402, 用于为各小区的载频分配初始基带资源； 在收到 BSC 401的请求后， 为需要基带资源的小区分配或释放所确定载频的基带资源； 检测各小区当前的话务量或信道占用， 并上报给 BSC 401。
进一步的， BTS 402将分配或释放是否成功的结果上 ^艮给 BSC 401。 本实施例中， 基带资源动态共享后， 基带资源在同一个 BTS站点下的 不同小区， 不同的 RRU站点间就可以共享。
在实际应用中， 实现基带资源动态共享功能的可以是一个软件模块， 该软件模块可以一部分属于 BBU软件系统， 另一部分属于 BSC软件系统， 也就是说， 一部分在 BTS的 BBU中实现， 另一部分在 BSC中实现； 该软 件模块也可以全部属于 BBU软件系统， 也就是说， 全部在 BTS的 BBU中 实现。
本实施例基带资源动态共享方法的实现流程， 如图 5 所示， 该方法包 括以下步驟：
步驟 501: 在初始分配基带资源之前， 先获取各个小区的载频优先级； 这里， 可以是两个或两个以上小区。
步驟 502: 根据获取的载频优先级和预先设置的预先设置规则， 为各小 区的载频分配初始基带资源；
这里， 可以先为每个小区承载最大业务量的载频分配初始基带资源； 也可以为每个小区不小于最小需求的载频分配初始基带资源。
步驟 503 - 510: 统计各小区当前基带资源的需求情况， 并根据设置的 门限值和循环定时器， 确定是否需要为小区分配或释放基带资源。
其中， 循环定时器仅针对普通分配门限、 普通释放门限使用， 以确定 循环定时器到时时是否需要分配或释放基带资源； 紧急分配门限、 紧急释 放门限是专门针对紧急事件或突发事件设置的， 所以不受循环定时器的限 制， 即： 与循环定时器设置无关。
具体的， 可预先设置循环定时器、 普通分配门限、 普通释放门限、 紧 急分配门限、 紧急释放门限。 当然， 实际应用中， 可以根据需要仅设置普 通分配门限和普通释放门限、 紧急分配门限和紧急释放门限其中的一组， 或两组都设置； 且当设置普通分配门限和普通释放门限时， 要同时设置循 环定时器。
所述各小区当前基带资源的需求情况， 可以基于小区的话务量的算法 进行统计， 如： 通过业务信道（TCH, Traffic Channel ) 占用时间 /可用 TCH 数 *900, 计算出话务量； 还可以用信道占用的方法进行统计， 如： 15分钟 内占用 TCH数与可用 TCH数的比值， 但不限于以上两种统计方法。
所述确定是否需要为小区分配或释放基带资源的步驟包括：
针对普通分配门限和普通释放门限， 由于同时设置有循环定时器， 因 此， 要根据循环定时器是否超时进行后续操作， 如果循环定时器超时， 则 分别判断基带资源的需求情况是否达到普通分配门限、 是否达到普通释放 门限， 如果达到普通分配门限， 则为相应小区的载频分配所需基带资源； 如果达到普通释放门限， 则为相应小区的载频释放所需基带资源。 如果循 环定时器未超时， 则继续等待循环定时器超时； 如果循环定时器超时而未 达到任意一个门限值， 则不做处理。
针对紧急分配门限和紧急释放门限， 无需考虑循环定时器， 也就是说， 无论是否设置循环定时器、无论设置的循环定时器是否超时，执行步驟 503 后均直接执行步驟 505和步驟 506, 分别判断是否达到紧急分配门限、 以及 是否达到紧急释放门限， 如果达到紧急分配门限， 则为相应小区的载频分 配所需基带资源； 如果达到紧急释放门限， 则为相应小区的载频释放所需 基带资源。
实际应用中， 可根据实际需要判断上述四个门限值的其中一个或多个， 可以依次判断或同时判断。
进一步的， 在确定需要为小区分配基带资源时， 还需先确定动态基带 资源池中是否有足够的基带资源可以用于分配， 如果有足够空闲基带资源， 则直接分配相应的基带资源； 如果没有足够空闲基带资源， 可先判断是否 有当前达到紧急释放门限的基带资源， 如果有， 先释放达到紧急释放门限 的基带资源， 再将释放出的基带资源分配给所需的小区， 如果没有， 则向 小区返回无法分配基带资源的消息。
通过采用本发明的方案， 能使基带资源动态共享， 进而使基带资源得 到最大化利用。 具体来说， 对于城市中普遍存在的按时间分布的话务不均 衡的潮汐话务现象， 即： 上班时间办公区话务比较集中， 下班后办公区话 务较低而住宅区话务上升的情况， 可以得到很好的解决。 假设： 办公区和 住宅区最大需要配置 18个载频的基带资源， 最少需要配置 6个载频的基带 资源， 那么， 如果采用现有技术的方案， 两个区域均需按最大需求的载频 配置相应基带资源， 即： 两个区域分别配置 18个载频的基带资源， 总计 36 个载频的基带资源； 而采用本发明的基带资源动态共享方案， 两个区域的 载频基带资源的配置为同一时刻两个区域所需要的载频的基带资源的最大 值之和， 可以是： 上班时间办公区配置 18个载频的基带资源， 住宅区配置 6个载频的基带资源； 下班后办公区配置 6个载频的基带资源，住宅区配置 18个载频的基带资源； 即： 需要配置 24个载频的基带资源。 显然， 节省了 12个载频的基带资源， 成本大大降低了； 并且， 24个载频的基带资源得到 了最大化的利用。
以上所述仅为本发明的较佳实施例， 用于说明和解释本发明， 并非用 对这些实施例的各种修改对本领域内的技术人员是显而易见的， 本发明不 限于这里所示的实施例， 而应依据符合这里所揭示的原理和新特征的最宽 范围。

Claims

权利要求书
1、 一种基带资源动态共享的方法， 其特征在于， 该方法包括： 为各小区的载频分配初始基带资源；
根据各小区基带资源的实际需求情况， 确定需要分配或释放基带资源 的小区和载频；
为小区分配或释放所确定载频的基带资源。
2、 根据权利要求 1所述的方法， 其特征在于， 所述为各小区的载频分 配初始基带资源之前， 该方法还包括：
获取各小区载频的优先级， 根据获得的各小区载频的优先级和预先设 置的分配规则为各小区的载频分配基带资源。
3、 根据权利要求 1所述的方法， 其特征在于， 该方法进一步包括： 设 置普通分配门限和普通释放门限， 并设置循环定时器； 相应的，
当循环定时器超时， 且小区基带资源的需求情况达到普通分配门限时， 确定需要为相应小区分配基带资源； 当循环定时器超时， 且小区基带资源 的需求情况达到普通释放门限时， 确定需要为相应小区释放基带资源。
4、根据权利要求 1或 3所述的方法，其特征在于，该方法进一步包括： 设置紧急分配门限和紧急释放门限； 相应的，
当小区基带资源的需求情况达到紧急分配门限时， 确定需要为相应小 区紧急分配基带资源； 当小区基带资源的需求情况达到紧急释放门限时， 确定需要为相应小区紧急释放基带资源。
5、 一种基带资源动态共享的装置， 其特征在于， 该装置包括： 资源模 块、 业务模块、 以及分配模块； 其中，
资源模块， 包括业务流程执行时所需的所有基带资源， 用于被分配模 块分配或释放；
业务模块， 用于根据各小区基带资源的实际需求情况， 确定需要分配 或释放基带资源的小区和载频， 并向分配模块发起请求， 将需要分配或释 放基带资源的小区和载频通知分配模块；
分配模块， 用于为各小区的载频分配初始基带资源； 在收到业务模块 的请求后， 为小区分配或释放业务模块所确定载频的基带资源。
6、 根据权利要求 5所述的装置， 其特征在于， 所述业务模块中设置有 普通分配门限、 普通释放门限、 以及循环定时器； 相应的，
所述业务模块， 还用于在循环定时器超时， 且小区基带资源的需求情 况达到普通分配门限或普通释放门限时， 请求为相应小区分配或释放所需 的基带资源。
7、 根据权利要求 5所述的装置， 其特征在于， 所述业务模块中设置有 紧急分配门限、 紧急释放门限； 相应的，
所述业务模块， 还用于当小区基带资源的需求情况达到紧急分配门限 或紧急释放门限时， 请求为相应小区紧急分配或紧急释放所需的基带资源。
8、 根据权利要求 5、 6或 7所述的装置， 其特征在于， 所述资源模块， 还用于在基带资源被分配或释放时， 将基带资源是否分配或释放成功的结 果通知分配模块。
9、 根据权利要求 5、 6或 7所述的装置， 其特征在于， 所述分配模块， 还用于获取各小区载频的优先级， 根据获得的各小区载频的优先级和预先 设置的分配规则为各小区的载频分配基带资源。
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