WO2006063519A1 - Procede de mise en reseau de station de base de reseau d'acces sans fil et reseau d'acces sans fil - Google Patents

Procede de mise en reseau de station de base de reseau d'acces sans fil et reseau d'acces sans fil Download PDF

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Publication number
WO2006063519A1
WO2006063519A1 PCT/CN2005/002181 CN2005002181W WO2006063519A1 WO 2006063519 A1 WO2006063519 A1 WO 2006063519A1 CN 2005002181 W CN2005002181 W CN 2005002181W WO 2006063519 A1 WO2006063519 A1 WO 2006063519A1
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WIPO (PCT)
Prior art keywords
base station
network controller
radio network
maintenance
primary
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PCT/CN2005/002181
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English (en)
French (fr)
Inventor
Wu Lv
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Huawei Technologies Co., Ltd.
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Publication date
Application filed by Huawei Technologies Co., Ltd. filed Critical Huawei Technologies Co., Ltd.
Publication of WO2006063519A1 publication Critical patent/WO2006063519A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/08—Access point devices
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/04—Arrangements for maintaining operational condition

Definitions

  • the present invention relates to the field of access networks of wireless communication networks, and in particular, to a base station networking method and a radio access network for an access network.
  • Security risks affecting network reliability include: transmission failure and power failure accounted for 50%; network hardware and software failure accounted for 11%; fire, lightning, explosion, earthquake and other natural disasters accounted for 18%; human factors accounted for 17%; other The reason is 4%.
  • the current solutions can improve the security of supporting equipment (such as power supply, transmission, etc.), select more stable equipment, strengthen management, standardize processes, and reduce man-made. Accident factors, etc. These solutions can eliminate security risks to a certain extent, but once the network fails, services are still unavailable during maintenance.
  • supporting equipment such as power supply, transmission, etc.
  • radio access network For the radio access network, all base stations access the wireless network through the MC (Radio Network Controller), and the reliability of the RNC is crucial.
  • MC Radio Network Controller
  • the wireless access part of the local network consists of one or more wireless network subsystems.
  • MS Radio Network Subsystem
  • the wireless network subsystem 131 includes a Radio Network Controller (RNC) 121, a Node B 111 and a Node B 112;
  • the wireless network subsystem 132 includes a radio network controller 122.
  • Node B 113 and Node B 114 the wireless network subsystem 132 includes a radio network controller 122.
  • the radio network controllers 121 and 122 control and manage radio resources of the base station (Node B) in the radio network subsystem through the Iub interface, and through the Iu interface and the OTC (Opera, Operation and Maintenance Center) 140 , the core network (CN, Core Network) 150 connection.
  • the devices of the core network are generally placed in the equipment room, and each RNS of the access network covers a different area, and there is only one RNC, and several Node Bs placed at different sites pass.
  • RNC access The local network is managed by the RNC, and the wireless signals transmitted by the Node B form seamless coverage of the contiguous pieces.
  • the RNC controls the radio resources of each RNS. If the RNC fails, all Node Bs of the entire RNS cannot access the network, and the coverage area of the entire RNS cannot communicate. At the same time, the failure of the communication link between the RNC and a Node B will also cause the Node B to be inoperable, causing the network in the Node B coverage area to collapse. For important coverage areas, wireless service disruption can lead to unpredictable economic losses, even temporary network service outages during maintenance are unacceptable.
  • the technical problem to be solved by the present invention is to provide a method for networking a base station of a radio access network and a radio access network.
  • the invention discloses a method for networking a base station of a radio access network, which comprises the following steps:
  • the base station accesses the network through the primary radio network controller
  • the base station accesses the network through the standby radio network controller according to an instruction issued by the maintenance maintenance center by the backup maintenance channel.
  • the operation and maintenance center detects whether the base station can access the primary radio network controller through the primary maintenance channel and/or the alternate maintenance channel.
  • the operation and maintenance center determines whether the base station can access the primary radio network controller by detecting whether the primary radio network controller is faulty and detecting whether the link between the primary radio network controller and the base station is faulty.
  • the operation and maintenance center detects whether the primary radio network controller is faulty according to the following steps:
  • the operation and maintenance center detects whether the main maintenance channel is interrupted. If it is interrupted, the standby maintenance channel logs in to the corresponding base station; B12. The operation and maintenance center synchronizes the current alarm of the base station, determines whether the service channel between the base station and the primary radio network controller is interrupted, and if yes, determines that the primary radio network controller is faulty.
  • the operation and maintenance center detects whether a link between the primary radio network controller and the base station fails according to the following steps:
  • the primary radio network controller detects whether the service channel between the base station and the base station is interrupted. If the service is interrupted, the alarm information is reported to the operation and maintenance center through the main maintenance channel.
  • the operation and maintenance center logs in to the base station through the standby maintenance channel.
  • the operation and maintenance center synchronizes the current alarm of the base station, and confirms that the link between the primary radio network controller and the base station is faulty.
  • the steps A and B include: storing, on the base station, configuration data corresponding to the primary radio network controller and the backup radio network controller, respectively, and storing the main radio network controller and the standby radio network controller respectively. Configuration data with the base station.
  • the process of the base station accessing the network through the standby radio network controller is specifically:
  • the base station enables configuration data corresponding to the standby radio network controller
  • the operation and maintenance center commands the standby radio network controller to enable configuration data with the base station through the standby maintenance channel;
  • the service channel between the standby radio network controller and the base station is in an active state.
  • the method further comprises: after the primary radio network controller fails to repair or the link fault between the primary radio network controller and the base station is repaired, the operation and maintenance center instructs the base station to switch to the primary radio network controller Access to the network.
  • the radio access network includes an operation and maintenance center, a main radio network controller, and a base station connected to the main radio network controller, and the operation and maintenance center passes through the main radio network controller to the base station.
  • the method further includes: a standby radio network controller, where the operation and maintenance center has an alternate maintenance channel between the standby radio network controller and the base station;
  • the base station When the base station cannot access the primary radio network controller, the base station is in operation and maintenance. The heart is commanded by the alternate maintenance channel to access the network through the alternate radio network controller.
  • the present invention connects the Node B to the two RNCs through the primary maintenance channel and the standby maintenance channel. When the primary RNC fails, or the transmission link between the primary RNC and the Node B fails, the operation and maintenance center passes the backup maintenance channel command.
  • the Node B automatically switches to access the network from the standby RNC, thereby ensuring that the Node B coverage area can perform wireless communication normally.
  • the invention improves the availability of the important coverage area of the communication network, eliminates some security risks of the network, and increases the reliability of the network.
  • Figure 1 shows the composition of the local network
  • FIG. 2 is a connection diagram of a normal working state of a base station according to the present invention.
  • FIG. 3 is a diagram showing a connection relationship after the base station in FIG. 2 is switched;
  • FIG. 4 is a topological diagram of a home network of a base station embodying the present invention.
  • Figure 5 is a flow chart showing the method of the present invention.
  • Figure 6 is a block diagram showing the structure of a ring transmission network to which the present invention is applied.
  • the idea of the present invention is to enable Node B to establish a connection to two RNCs, which are controlled by the same operation and maintenance center.
  • the Node B is only connected to one RNC under normal working conditions.
  • the RNC is the primary RNC of the Node B; the other RNC is the standby RNC of the Node B. In the event of a failure of the primary RNC or its transmission link, Node B can switch to the standby RNC to continue working.
  • the radio access network includes an operation and maintenance center, a main radio network controller 221, and base stations 211 and 212 connected to the main radio network controller, and the operation and maintenance center passes through the main wireless network.
  • the controller is connected to the base station through a primary maintenance channel, and further includes a backup radio network controller 222, where the operation and maintenance center has a backup maintenance channel between the backup radio network controller 222 and the base station 212;
  • the base station 212 accesses the network through the alternate radio network controller 222 in accordance with an instruction issued by the alternate maintenance channel 222 by the operation and maintenance center.
  • Node B 211 and Node B 213 are respectively assigned to the radio network controller 221 and the radio network controller 222.
  • the Node B 212 is a base station embodying the present invention, with the radio network controller 221 as the primary RNC and the radio network controller 222 as the standby RNC. In the normal working state, the Node B 212 belongs to the radio network controller 221, and no connection relationship is established with the radio network controller 222.
  • Figure 3 is a diagram showing the connection relationship after the local network in Figure 2 is switched.
  • the wireless network controller In the wireless network controller
  • the Node B 212 When a device failure occurs or the transmission link with the Node B 212 is broken, the Node B 212 enables the pre-stored alternate configuration data to be connected to the radio network controller 222, and the radio network controller 222 accesses the local network until the wireless The network controller 221 or its transmission link with the Node B 212 is repaired and then switched back to the radio network controller 221 to operate.
  • the operation and maintenance center 0MC On the local network, there is usually only one operation and maintenance center 0MC, which is responsible for the operation, monitoring and maintenance of various functional entities in the network. From the operation and maintenance center via RNC to Node B, there is a logical maintenance channel M. Through this logical maintenance channel, the operation and maintenance center can log in to the RNC and Node B to monitor the working conditions of the RNC and Node B.
  • the RNC and the Node B respectively store configuration data required for cooperation with the other party, and the RNC and the Node B have a service channel T for the allocation and management of the radio resources, and the service channel T is the RNC and the Node B.
  • the logical channel on the Iub interface Through this logical maintenance channel, the operation and maintenance center can log in to the RNC and Node B to monitor the working conditions of the RNC and Node B.
  • the RNC and the Node B respectively store configuration data required for cooperation with the other party, and the RNC and the Node B have a service channel T for
  • the operation and maintenance center should have two maintenance channels M connected to the Node B, each of which maintains a different RNC to monitor the Node.
  • the operation and maintenance center 430 has a maintenance channel 441 to the Node B 410 via the radio network controller 421 and a maintenance channel 442 to the Node B 410 via the radio network controller 422.
  • the maintenance channels 441 and 442 exist simultaneously, but in the normal state, the Node B 410 only accepts the login from the maintenance and maintenance center 430 from the maintenance channel 441.
  • the Node B 41 G Upon detecting an interruption of the maintenance channel 441, the Node B 41 G begins accepting from the maintenance channel 442
  • the login and operation and maintenance center 430 can control the Node B 410 through the maintenance channel 442 at this time.
  • the service channels 451 and 452 do not work at the same time, and only the Node B 410 and its own radio network controller The business channel between them is working.
  • step S10 the Node B in the wireless network, usually with its current home RNC as its primary RNC, assigns a primary RNC to the newly added Node B, and selects the RNC with which the Node B has a connection link.
  • the standby MC establishes a primary maintenance channel from the operation and maintenance center through the primary RNC to the Node B and an alternate maintenance channel from the operation and maintenance center via the standby MC to the Node B.
  • step S20 two sets of configuration data required for cooperation with the RNC are stored on the Node B, and corresponding to the configuration data of the primary RNC and the standby RNC, respectively, and the cooperation work with the Node B is stored on the primary RNC and the standby RNC, respectively.
  • Required configuration data are stored on the Node B, and corresponding to the configuration data of the primary RNC and the standby RNC, respectively, and the cooperation work with the Node B is stored on the primary RNC and the standby RNC, respectively.
  • step S30 when the local network is in the normal working state, the Node B receives the monitoring of the operation and maintenance center through the main maintenance channel, runs the configuration data coordinated with the primary RNC, and completes the allocation of the wireless resources through the service channel with the primary RNC.
  • step S40 which are respectively described below.
  • the Node B needs to switch its own RNC:
  • Node B detects the interruption of the service channel between the main maintenance channel and the main RNC, and starts accepting the login from the standby maintenance channel.
  • the main maintenance channel can still work in the part between the operation and maintenance center and the primary RNC.
  • the primary RNC detects that the service channel with the Node B is interrupted and reports it to the operation and maintenance center through the main maintenance channel. After the alarm is sent to the primary RNC, log in to the Node through the standby maintenance channel.
  • the operation and maintenance center synchronizes the current alarm of the Node B, confirming the primary RNC and the Node B. Interrupted business channel between;
  • the operation and maintenance center determines that the transmission link between Node B and the primary RNC has failed.
  • the operation and maintenance center detects that the main maintenance channel is interrupted
  • the operation and maintenance center logs in to the Node B through the standby maintenance channel.
  • the operation and maintenance center synchronizes the current alarm of the Node B, and determines whether the service channel between the Node B and the primary RNC is interrupted. If yes, it determines that the primary RNC is faulty; if not, it determines that the primary RNC and the Node B are working properly, and Do not deal with it.
  • step S50 After the operation and maintenance center determines that the Node B cannot access the primary RNC through the primary maintenance channel and the standby maintenance channel, go to step S50 to enable the Node B to enable the configuration data that matches the standby RNC.
  • step S60 the operation and maintenance center commands the standby RNC to enable the configuration data coordinated with the Node B.
  • step S70 the service channel between the Node B and the standby RNC is connected, and the Node B restores the service capability.
  • the service channel between the primary maintenance channel, the primary RNC, and the Node B can work normally.
  • the Node B is switched back and controlled by the operation and maintenance center. By the main RNC.
  • the preferred embodiment of the present invention has been described above by taking a WCDMA network as an example, and the present invention can also be applied to a wireless communication network based on other standards.
  • the operation and maintenance center can only log in to the base station through the main maintenance channel in the normal working state. In practice, such limitation may not be performed.
  • the present invention is applicable to a Node B covering an important area, and is also suitable for use in a region with rich transmission resources, such as the ring transmission network shown in FIG. 6: the radio network controller 621, the Node B 612, and the Node B 614 pass the STM-1 ( Synchronous Transfer Mode 1 , Synchronous Transfer Mode 1 )
  • the interface is connected to the ring transport network, and the radio network controller 622, Node B 611, and Node B 613 are connected to the ring transport network through the El interface.
  • the Node B 611 and the Node B 612 have the radio network controller 621 as the primary RNC, the radio network controller 622 as the standby RNC, and the Node B 61 3 and the Node B 614 as the radio network controller 622 as the primary RNC.
  • Controller 621 is a standby RNC.
  • the invention is very effective in improving network reliability.
  • the reliability is usually 99.9999% (that is, 6 9).
  • the reliability of the entire network after the networking is 99.999% (that is, 5 9) ).
  • the reliability index of the entire network reaches 99.9998% (that is, close to 6 9).
  • the invention realizes the dual-homing networking of the base station equipment, thereby improving the reliability of the network and ensuring the stability of the network operation. At the same time, the invention has the characteristics of small influence on the product, engineering single, and high operability.

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  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Description

无线接入网的基站组网方法及无线接入网
技术领域
本发明涉及无线通信网络的接入网领域， 尤其涉及一种接入网的基站 组网方法和无线接入网。
背景技术
如今， 随着移动通信网络的用户数量飞速增长， 通信运营商提供服务 项目的不断增加， 日常生产和生活对无线网络的依賴性越来越强， 这就对 无线网络的可靠性提出了要求。
对网络可靠性产生影响的安全隐患包括： 传输故障和电源故障占 50%; 网络硬件和软件故障占 11%; 火灾、 雷电、 爆炸、 地震等自然灾害占 18%; 人为因素占 17%; 其他原因占 4%。
对整个无线网络而言， 为了提高网络的可靠性， 目前可以采用的解决 方案有提高配套设备（如电源、传输等）的安全性、选择更为稳定的设备、 加强管理、 规范流程、 降低人为事故因素等。 这些方案都可以在一定程度 上消除安全隐患， 但一旦网络发生故障， 在维修期间仍然无法提供服务。
对无线接入网而言， 所有的基站都通过 MC ( Radio Network Control ler , 无线网络控制器）接入无线网络， RNC的可靠性至关重要。
以基于 WCDMA ( Wide-band Code Divi s ion Mul t iple Access , 宽带码 分多址接入） 的本地网为例， 参见图 1 , 本地网的无线接入部分由一到多 个无线网络子系统（MS, Radio Network Subsys tem )組成， 其中无线网 络子系统 131包括无线网络控制器（RNC, Radio Network Control ler ) 121 , Node B 111和 Node B 112; 无线网络子系统 132包括无线网络控制器 122、 Node B 113和 Node B 114。 无线网络控制器 121和 122通过 Iub接口对本无 线网络子系统中的基站 （Node B )进行无线资源的控制和管理， 通过 Iu接 口与本地网的操作维护中心 （OMC, Operat ions and Maintenance Center ) 140、 核心网络（CN, Core Network ) 150连接。 在本地网组网时， 核心网 络的设备一般集中放置在机房内， 而接入网的每个 RNS覆盖一片不同的区 域， 其中有且只有一个 RNC, 放置在不同站址的若干个 Node B通过 RNC接入 本地网， 由 RNC对其进行管理， Node B发射出的无线信号形成连片的无缝 覆盖。
可见， RNC控制着每个 RNS的无线资源。 一旦 RNC发生故障， 会导致 整个 RNS的所有 Node B无法接入网络， 整个 RNS的覆盖区域无法进行通 信。 同时 RNC与某个 Node B之间通信链路的故障也会导致该 Node B无法 工作， 使该 Node B覆盖区域的网络瘫痪。 而对于重要的覆盖区域， 无线 服务中断会导致难以估量的经济损失， 即使是维修期间暂时的网络服务停 顿也是不能接受的。
发明内容
本发明要解决的技术问题是提供一种无线接入网的基站组网方法及 无线接入网， 在 RNC出现故障和 RNC与基站之间的传输链路发生故障时， 该 基站仍能正常接入网络， 保证该基站覆盖区域的无线通信能够正常进行。
本发明公开了一种无线接入网的基站组网方法， 包括以下步骤：
A. 设置基站的主无线网络控制器和备用无线网络控制器， 建立从操 作维护中心经主无线网络控制器至所述基站的主维护通道， 和从操作维护 中心经备用无线网络控制器至所述基站的备用维护通道；
B. 所述基站通过主无线网络控制器接入网络；
C. 当所述基站无法接入主无线网络控制器时， 所述基站根据操作维 护中心由备用维护通道发出的指令， 通过备用无线网络控制器接入网络。
其中：
操作维护中心通过主维护通道和 /或备用维护通道检测所述基站是否 能够接入主无线网络控制器。
操作维护中心通过检测主无线网络控制器是否发生故障， 以及检测主 无线网络控制器与所述基站之间的链路是否发生故障来判断所述基站是 否能够接入主无线网络控制器。
所述操作维护中心按照下述步骤检测主无线网络控制器是否发生故 障：
B11. 操作维护中心检测主维护通道是否中断， 如果中断， 则备用维 护通道登录到相应基站； B12. 操作维护中心同步该基站的当前告警， 判断该基站与主无线网 络控制器之间的业务通道是否中断， 如果是， 则确定主无线网絡控制器发 生故障。
所述操作维护中心按照下述步骤检测主无线网络控制器与所述基站 之间的链路是否发生故障：
B21. 主无线网络控制器检测与所述基站之间的业务通道是否中断， 如果中断， 将告警信息通过主维护通道上报操作维护中心；
B22. 操作维护中心收到告警信息后， 通过备用维护通道登录到所述 基站；
B23. 操作维护中心同步所述基站的当前告警， 确认主无线网络控制 器与所述基站之间的链路发生故障。
优选地， 步骤 A与 B之间包括： 在所述基站上存储分别对应于主无线网 络控制器和备用无线网络控制器的配置数据， 在主无线网络控制器和备用 无线网络控制器上分别存储与所述基站的配置数据。
所述基站通过备用无线网络控制器接入网絡的过程具体为：
C1. 所述基站启用对应于备用无线网络控制器的配置数据；
C2. 操作维护中心通过备用维护通道命令备用无线网络控制器启用与 所述基站的配置数据；
C3. 使备用无线网络控制器与所述基站之间的业务通道处于工作状 态。
优选地， 所述方法还包括： 主无线网络控制器故障修复或主无线网络 控制器与所述基站之间的链路故障修复后， 操作维护中心指令所述基站切 换至由主无线网络控制器接入网络。
本发明提供的无线接入网， 包括操作维护中心、 主用无线网络控制器 和与所述主用无线网络控制器连接的基站， 所述操作维护中心经主无线网 络控制器至所述基站之间通过主维护通道连接， 还包括： 备用无线网络控 制器 , 所述操作维护中心经备用无线网络控制器至所述基站之间具有备用 维护通道；
当所述基站无法接入主无线网络控制器时， 所述基站根据操作维护中 心由备用维护通道发出的指令， 通过备用无线网络控制器接入网络。 本发明将 Node B通过主维护通道和备用维护通道连接到两个 RNC, 当 主 RNC出现故障时， 或主 RNC与该 Node B之间的传输链路发生故障时， 操作维护中心通过备用维护通道指令该 Node B 自动切换为从备用 RNC接 入网络， 从而保证该 Node B覆盖区域能够正常进行无线通信。 本发明提 高了通信网络重要覆盖区域的可用性， 消除了网络的部分安全隐患， 增加 了网络的可靠性。
附图说明
图 1所示为本地网的组成结构图；
图 2所示为本发明所述基站正常工作状态的连接关系图；
图 3所示为图 2中的基站发生切换后的连接关系图；
图 4所示为实施本发明的基站的欢归属网络拓朴图；
图 5所示为本发明所述方法的流程图；
图 6所示为应用本发明的环形传输网结构图。
具体实施方式 本发明的思路是令 Node B可以建立到两个 RNC的连接， 这两个 RNC由同 一个操作维护中心控制。 Node B在正常工作状态下只与一个 RNC保持连接 状态， 这个 RNC为该 Node B的主 RNC; 另一个 RNC为该 Node B的备用 RNC。 在 出现主 RNC瘫机或其间的传输链路出现故障的情况下 Node B能够切换到备 用 RNC继续工作。
本发明提供的无线接入网参考图 2， 包括操作维护中心、 主用无线网 络控制器 221和与所述主用无线网络控制器连接的基站 211、 212 , 所述操 作维护中心经主无线网络控制器至所述基站之间通过主维护通道连接， 还 包括备用无线网络控制器 222 , 所述操作维护中心经备用无线网络控制器 222至所述基站 212之间具有备用维护通道；
当所述基站 212无法接入主无线网络控制器时 , 所述基站 212根据操作 维护中心由备用维护通道 222发出的指令， 通过备用无线网络控制器 222接 入网络。
图 2所示的网络实体的正常工作状态的连接关系也参考图 2。 Node B 211和 Node B 213 , 分别归属于无线网络控制器 221及无线网络控制器 222。
Node B 212为实施本发明的基站， 以无线网络控制器 221为主 RNC, 以无线 网络控制器 222为备用 RNC。 在正常工作状态， Node B 212归属于无线网络 控制器 221， 而与无线网络控制器 222之间并未建立连接关系。
图 3所示为图 2中本地网发生切换后的连接关系图。 在无线网络控制器
221出现设备故障或其与 Node B 212之间的传输链路断路时， Node B 212 启用预先存储的备用配置数据连接到无线网络控制器 222 , 由无线网絡控 制器 222接入本地网， 直至无线网络控制器 221或其与 Node B 212之间的传 输链路被修复后再切换回无线网络控制器 221工作。
在本地网中， 通常只有一个操作维护中心 0MC， 负责网络中各个功能 实体的操作、 监控和维护。 从操作维护中心经 RNC到 Node B有一条逻辑维 护通道 M,操作维护中心通过这条逻辑维护通道可以登录到 RNC和 Node B上， 对 RNC和 Node B的工作情况进行监控。 此外， 在 RNC与 Node B上分别存储有 与对方协同工作所需的配置数据， RNC与 Node B之间有业务通道 T, 用于无 线资源的分配和管理， 业务通道 T为 RNC与 Node B之间 Iub接口上的逻辑通 道。
要使一个 Node B能够接受两个 RNC的控制， 首先要具备以下条件： 操 作维护中心应当有两条维护通道 M连接该 Node B, 其中每条维护通道 M经过 不同的 RNC, 用以监控该 Node B与 RNC之间的工作状态， 并控制 Node B对归 属 RCN的切换。
同时， 在该 Node B上存储两套配置数据， 对应于两个 RNC , 在这两个 RNC上也要存储对应于该 Node B的配置数据； 并且， Node B应当能够与每 个 RNC之间都建立业务通道 T。
图 4所示为实施本发明的 Node B的双归属网络拓朴图。 Node B 410的 主 RNC为无线网络控制器 421 , 备用 RNC为无线网络控制器 422。 操作维护中 心 430经无线网络控制器 421有至 Node B 410的维护通道 441 , 经无线网络 控制器 422有至 Node B 410的维护通道 442。 维护通道 441和 442同时存在, 但在正常状态时 Node B 410只接受操作维护中心 430来自维护通道 441的登 录。 在检测到维护通道 441中断时， Node B 41 G开始接受来自维护通道 442 的登录， 操作维护中心 430此时可以通过维护通道 442对 Node B 410进行控 制。 Node B 410与无线网络控制器 421之间有业务通道 451， 与无线网络控 制器 422之间可以建立业务通道 452 , 业务通道 451和 452不同时工作， 只有 Node B 410与其归属的无线网络控制器之间的业务通道处于工作状态。
以下结合图 5 , 详细说明本发明的实施流程。
在步骤 S1 0， 对无线网络中的 Node B， 通常以其当前归属的 RNC为其主 RNC, 对新加入的 Node B为其指定主 RNC, 选择与该 Node B有连接链路的 RNC 为其备用 MC, 建立从操作维护中心经主 RNC至该 Node B的主维护通道和从 操作维护中心经备用 MC至该 Node B的备用维护通道。
在步骤 S20, 在该 Node B上存储两套与 RNC配合工作所需的配置数据， 分别对应于主 RNC和备用 RNC的配置数据， 在主 RNC和备用 RNC上分別存储与 该 Node B的配合工作所需的配置数据。
在步骤 S 30 , 本地网处于正常工作状态时， Node B通过主维护通道接 受操作维护中心的监控， 运行与主 RNC配合的配置数据， 与主 RNC之间通过 业务通道完成无线资源的分配。
导致 Node B无法接入主 RNC的原因有两类， 一类是主 RNC出现故障无法 正常工作， 另一类是主 RNC与 Node B之间的通信链路出现故障致使二者无 法正常交换数据。 对这两类故障有不同的检测方法， 均对应于步驟 S40 , 以下分别说明。
当 Node B和主 MC之间传输链路故障时， 主 RNC与 Node B之间的主维护 通道、 主 RNC与 Node B之间的业务通道同时中断， 此时 Node B需要切换其 归属 RNC:
al . Node B检测到主维护通道、 与主 RNC之间的业务通道中断， 开始 接受来自备用维护通道的登录；
a2. 主维护通道在操作维护中心和主 RNC之间的部分仍能工作， 主 RNC 检测到其与该 Node B的业务通道中断，通过主维护通道上报操作维护中心； a 3.操作维护中心收到主 RNC告警后，通过备用维护通道登录到该 Node
B;
a4. 操作维护中心同步该 Node B的当前告警， 确认主 RNC与该 Node B 之间的业务通道中断；
a5. 操作维护中心认定 Node B和主 RNC之间传输链路发生故障。
当主 RNC发生故障时， 操作维护中心到 Node B的主维护通道、 主 RNC与 Node B之间的业务通道同时中断。 此时， 操作维护中心检测到主维护通道 完全中断。 但在主 RNC与 Node B正常工作时， 如果主 MC与操作维护中心之 间的传输链路发生故障， 也会使操作维护中心检测到主维护通道完全中 断， 而在这种情况下， Node B不需要进行切换。 因此， 当操作维护中心检 测到主维护通道中断时， 需要对主 RNC与 Node B是否正常工作作出判断： bl. Node B检测到主维护通道中断， 开始接受来自备用维护通道的登 录；
b2. 操作维护中心检测到主维护通道中断；
b3. 操作维护中心通过备用维护通道登录到 Node B;
b4. 操作维护中心同步 Node B的当前告警， 判断 Node B与主 RNC之间 的业务通道是否中断， 如果是， 则认定主 RNC发生故障； 如果否， 则认定 主 RNC与 Node B工作正常， 并不做处理。
操作维护中心通过主维护通道和备用维护通道认定 Node B无法接入到 主 RNC后， 进行步骤 S50 , 命令 Node B启用与备用 RNC配合的配置数据。
在步骤 S60 ,操作维护中心命令备用 RNC启用与 Node B配合的配置数据。 在步骤 S70， Node B与备用 RNC之间的业务通道连通， Node B恢复业务 能力。
当主 RNC能够正常工作或主 RNC与 Node B之间的通信链路恢复正常后， 主维护通道、 主 RNC与 Node B之间的业务通道都能够正常工作时， Node B 由操作维护中心控制切换回由主 RNC。
以上以 WCDMA网络为例说明了本发明的优选实施方式， 本发明也可以 用于基于其他标准的无线通信网络。
优选实施方式中操作维护中心在正常工作状态时只能通过主维护通 道登录到基站上， 实际中也可以不进行这样的限制。
优选实施方式的备用 MC只有一个， 实际中可以设置多个备用 RNC, 预 置各个 RNC的优先级， 为基站接入提供更好的可靠性。 本发明适用于覆盖重要区域的 Node B, 也艮适合在传输资源丰富的地 域使用， 例如图 6所示的环形传输网： 无线网络控制器 621、 Node B 612、 Node B 614通过 STM- 1 ( Synchronous Transfer Mode 1 , 同步传输模式 1 ) 接口连接到环形传输网， 无线网络控制器 622、 Node B 611、 Node B 613 通过 El接口连接到环形传输网。 其中， Node B 611、 Node B 612以无线网 络控制器 621为主 RNC， 以无线网络控制器 622为备用 RNC; Node B 61 3、 Node B 614以无线网络控制器 622为主 RNC, 以无线网络控制器 621为备用 RNC。
本发明在提高网络可靠性方面效果非常明显。对于单个设备如 Node B、 RNC等的可靠性通常情况下为 99. 9999% (即 6个 9 ) , 采用现有技术组网后 整个网络的可靠性指标为 99. 999% (即 5个 9 ) 。 应用本发明后， 整个网络 的可靠性指标达到 99. 9998% (即接近 6个 9 ) 。
本发明实现了基站设备的双归属组网， 从而提高了网络的可靠性， 保 证了网络运营稳定， 同时本发明具有对产品影响小、 工程筒单、 可操作性 强等特点。
以上所述的本发明优选实施方式， 并不构成对本发明保护范围的限 定。任何在本发明的精神和原则之内所作的任何修改、等同替换和改进等， 均应包含在本发明的权利要求保护范围之内。

Claims

权 利 要 求
1. 一种无线接入网的基站组网方法， 其特征在于， 包括以下步骤：
A. 设置基站的主无线网络控制器和备用无线网络控制器， 建立从操 作维护中心经主无线网络控制器至所述基站的主维护通道， 和从操作维护 中心经备用无线网络控制器至所述基站的备用维护通道；
B. 所述基站通过主无线网络控制器接入网络；
C. 当所述基站无法接入主无线网络控制器时， 所述基站根据操作维 护中心由备用维护通道发出的指令， 通过备用无线网络控制器接入网络。
2. 按照权利要求 1所述无线接入网的基站组网方法， 其特征在于： 操 作维护中心通过主维护通道和 /或备用维护通道检测所述基站是否能够接 入主无线网络控制器。
3. 按照权利要求 2所述无线接入网的基站组网方法， 其特征在于： 操 作维护中心通过检测主无线网络控制器是否发生故障， 以及检测主无线网 络控制器与所述基站之间的链路是否发生故障来判断所述基站是否能够 接入主无线网络控制器。
4. 按照权利要求 3所述无线接入网的基站组网方法， 其特征在于： 所 述操作维护中心按照下述步骤检测主无线网络控制器是否发生故障：
B11. 操作维护中心检测主维护通道是否中断， 如果中断， 则备用维 护通道登录到相应基站；
B12. 操作维护中心同步该基站的当前告警， 判断该基站与主无线网 络控制器之间的业务通道是否中断， 如果是， 则确定主无线网络控制器发 生故障。
5. 按照权利要求 4所述无线接入网的基站组网方法， 其特征在于： 所 述操作维护中心按照下述步骤检测主无线网络控制器与所述基站之间的 链路是否发生故障：
B21. 主无线网絡控制器检测与所述基站之间的业务通道是否中断， 如果中断， 将告警信息通过主维护通道上 ^艮操作维护中心；
B22. 操作维护中心收到告警信息后， 通过备用维护通道登录到所述 基站； B23. 操作维护中心同步所述基站的当前告警， 确认主无线网络控制 器与所述基站之间的链路发生故障。
6. 按照权利要求 1至 5任意一项所述无线接入网的基站組网方法， 其 特征在于： 步骤 A与 B之间包括： 在所述基站上存储分别对应于主无线网络 控制器和备用无线网络控制器的配置数据， 在主无线网络控制器和备用无 线网络控制器上分别存储与所述基站的配置数据。
7. 按照权利要求 6所述无线接入网的基站组网方法， 其特征在于： 所 述基站通过备用无线网络控制器接入网络的过程具体为：
C1. 所述基站启用对应于备用无线网络控制器的配置数据；
C2. 操作维护中心通过备用维护通道命令备用无线网络控制器启用与 所述基站的配置数据；
C3. 使备用无线网络控制器与所述基站之间的业务通道处于工作状 态。
8. 按照权利要求 3所述无线接入网的基站组网方法， 其特征在于还 包括： 主无线网络控制器故障修复或主无线网络控制器与所述基站之间的 链路故障修复后，操作维护中心指令所述基站切换至由主无线网络控制器 接入网络。
9. 一种无线接入网， 包括操作维护中心、 主用无线网络控制器和与 所述主用无线网络控制器连接的基站， 所述操作维护中心经主无线网络控 制器至所述基站之间通过主维护通道连接， 其特征在于还包括： 备用无线 网络控制器， 所述操作维护中心经备用无线网络控制器至所述基站之间具 有备用维护通道；
当所述基站无法接入主无线网络控制器时， 所述基站根据操作维护中 心由备用维护通道发出的指令， 通过备用无线网络控制器接入网络。
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EP2173124A4 (en) * 2007-12-14 2010-07-21 Huawei Tech Co Ltd METHOD, NETWORK ELEMENT DEVICE, AND NETWORK SYSTEM FOR ESTABLISHING A CONNECTION BETWEEN A MAINTENANCE STATION AND A BASE STATION
US8233379B2 (en) 2007-12-14 2012-07-31 Huawei Technologies Co., Ltd. Method, network element device and network system for establishing connection between maintenance node and base station
WO2009089786A1 (fr) * 2008-01-07 2009-07-23 Huawei Technologies Co., Ltd. Système de réseau sans fil et procédé de communication correspondant

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