WO2012009975A1 - 临时核心网的选取方法、基站及集群通信系统 - Google Patents

临时核心网的选取方法、基站及集群通信系统 Download PDF

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Publication number
WO2012009975A1
WO2012009975A1 PCT/CN2011/071271 CN2011071271W WO2012009975A1 WO 2012009975 A1 WO2012009975 A1 WO 2012009975A1 CN 2011071271 W CN2011071271 W CN 2011071271W WO 2012009975 A1 WO2012009975 A1 WO 2012009975A1
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Prior art keywords
base station
core network
information
temporary core
judgment
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PCT/CN2011/071271
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English (en)
French (fr)
Inventor
郄小丹
张现周
Original Assignee
中兴通讯股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Priority to EP11809164.4A priority Critical patent/EP2597909B1/en
Priority to US13/810,743 priority patent/US9084109B2/en
Publication of WO2012009975A1 publication Critical patent/WO2012009975A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/30—Network data restoration; Network data reliability; Network data fault tolerance
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/18—Selecting a network or a communication service

Definitions

  • the present invention relates to the field of wireless communication technologies, and specifically relates to a method for selecting a temporary core network in a Long Term Evolution (LTE) trunking communication system, a base station, and a cluster communication system.
  • LTE Long Term Evolution
  • the trunking communication system is a dedicated wireless communication system developed for industrial users to meet the needs of the industry.
  • the large number of wireless users in the trunking communication system share a small number of wireless channels, and the command and dispatch is the main application. It is a multi-purpose and efficient system.
  • the cluster communication system has a wide application market in the fields of government departments, public safety, emergency telecommunications, electric power, civil aviation, petrochemicals and military.
  • the basic characteristics of the trunking communication system include point-to-multipoint half-duplex communication. Multi-users share downlink radio resources, and have fast command and dispatch capabilities such as group call and single call.
  • the network reliability and security requirements are high and faulty. Weakening and off-line capabilities. Since the trunking communication system is mostly used for military, public security, emergency situations, etc., this requires a broadband wireless access system with higher fault-tolerant processing capability, redundant backup capability, when the network side (core network) fails. Cluster users should still be able to communicate, minimizing the impact of network-side failures and minimizing risk.
  • the broadband digital trunking communication system based on TD-LTE Datang Telecom-Long Term Evolution
  • TD-LTE Datang Telecom-Long Term Evolution
  • the main object of the present invention is to provide a method for selecting a temporary core network, a base station, and a cluster communication system, which can effectively switch to a suitable base station when the core network fails, so that the base station serves as a temporary core network for the user.
  • the present invention provides a method for selecting a temporary core network, including:
  • each base station After the failure of the core network, each base station is accepted as a temporary core network according to the ruling result of the judgment information and the ruling criteria.
  • the receiving the judgment information sent by the other base station and transmitting the judgment information of the other base station to the other base station specifically includes:
  • the accepting each base station becomes a temporary core network according to the ruling result of the judgment information and the ruling criterion, and specifically includes:
  • the decision information includes: processing capability and load information.
  • the present invention provides a base station, including:
  • An information setting unit configured to set unified judgment information and a rule of judgment
  • An information receiving unit configured to receive the judgment information sent by other base stations and send its own judgment information to other base stations;
  • the ruling result accepting unit is configured to: after the core network fails, accept each base station according to The decision information and the ruling result of the ruling criteria become the temporary core network.
  • the information receiving unit receives the decision information transmitted by other base stations in real time or periodically, and sends its own decision information to other base stations in real time or periodically.
  • the decision result accepting unit further includes:
  • a request receiving subunit configured to receive request information sent by the other base station to be a temporary core network
  • the response sending subunit is configured to send, to the other base station, response information that agrees to be the temporary core network.
  • the decision information includes: processing capability and load information.
  • the present invention provides a trunking communication system, comprising: a first base station and other base stations having at least two base stations, wherein the first base station and other base stations are provided with unified decision information and a decision criterion, wherein:
  • the first base station is configured to receive the judgment information sent by the other base station and send its own judgment information to other base stations. After the core network fails, accept the decision result of each base station according to the judgment information and the award criterion. Become a temporary core network.
  • the other base station is configured to send the decision information to the first base station, and receive the judgment information sent by the first base station, and after the core network fails, determine the first according to the judgment information and the ruling criterion.
  • the base station becomes a temporary core network.
  • the first base station and the other base station send decision information to each other in real time or periodically.
  • the first base station is configured to receive request information sent by the other base station to become a temporary core network, and send, to the other base station, response information that is agreed to become a temporary core network;
  • the other base station is configured to send, to the first base station, request information that requests the first base station to become a temporary core network, and receive response information returned by the first base station.
  • the technical solution of the present invention has the following beneficial effects:
  • the method for selecting a temporary core network, the base station, and the trunking communication system provided by the present invention transmit the decision information in real time between the base stations.
  • a base station is determined as a temporary core network according to the decision information and the pre-established decision criterion, and the function of the substitute core network serves the users under each base station.
  • FIG. 1 is a flowchart of a method for selecting a temporary core network according to an embodiment of the present invention
  • FIG. 2 is a specific flowchart of receiving a base network according to a determination result of each of the base stations according to the judgment information and the ruling criterion according to an embodiment of the present invention
  • FIG. 3 is still another flowchart of a method for selecting a temporary core network according to an embodiment of the present invention
  • FIG. 4 is still another flowchart of a method for selecting a temporary core network according to an embodiment of the present invention
  • FIG. 6 is a schematic structural diagram of a base station according to an embodiment of the present invention
  • FIG. 7 is another schematic structural diagram of a base station according to an embodiment of the present invention.
  • FIG. 8 is a structural diagram of a trunking communication system according to an embodiment of the present invention. detailed description
  • An embodiment of the present invention provides a method for selecting a temporary core network. As shown in FIG. 1, the method includes:
  • Step S101 Setting unified judgment information and a rule of judgment
  • the unified decision information and the ruling criteria are set on all the base stations, and the decision information and the ruling criterion are also set on the base station selected as the core network in the future.
  • the judgment information includes: Processing capacity and load information.
  • the above-mentioned ruling criterion is determined according to the magnitude of the processing capability or the load of the load information reaction: a base station used as a temporary core network by a base station having a small load, or a base station used as a temporary core network by a base station having a large processing capability .
  • Step S102 Receive decision information sent by other base stations and send their own decision information to other base stations.
  • the base stations of the trunking communication system transmit the decision information in real time or periodically through the interface. If there is a physical interface between the two base stations, the decision information can be directly transmitted through the interface. There is no physical interface between the two base stations.
  • a base station having a physical interface with each other serves as a relay base station to forward decision information.
  • Step S103 After the core network fails, the base station is accepted as a temporary core network according to the ruling result of the foregoing judgment information and the ruling criterion.
  • the base station with a small load is used as a base station for the temporary core network, or the base station with a large capacity for processing is used as a base station for the temporary core network.
  • the function of the base station instead of the core network serves the users under each base station.
  • each base station is accepted as a temporary core network according to the determination result of the foregoing judgment information and the ruling criterion, and specifically includes the following steps: Step S131: Receive a request sent by the other base station It becomes the request information of the temporary core network;
  • the other base stations send request information to the base station used as the temporary core network. If there is a physical interface between the two base stations, the request information is sent directly through the interface. If there is no physical interface between the two base stations, the other base stations act as relays. Forward request information.
  • Step S131 Send response information to the other base station to agree to be the temporary core network.
  • the base station responds to the response information as a response to the temporary core network. If there is a physical interface between the base stations, the request information is sent directly through the interface. If there is no physical interface between the base stations, the other base stations serve as relay forwarding request information. Agree to be the temporary core network, then reply to agree to become the response information of the temporary core network. If you do not agree, you will also reply to reject the consent as a response message to the temporary core network. The function of serving the user by the base station used as the temporary core network is realized. As shown in FIG. 3, another flowchart of a method for selecting a temporary core network according to an embodiment of the present invention; three base stations in the core network of the system are a base station 1, a base station 2, and a base station 3, and each base station exists Physical interface.
  • Step S201 Each base station sets unified decision information and a ruling criterion, where the decision information is load information, where the ruling criterion is: using a base station used as a temporary core network by a base station with a small load as a ruling criterion;
  • the interface transmits the load information of each base station in real time or periodically.
  • the load is low to high, which is base station 1, base station 2, and base station 3.
  • Each base station can receive load information of other base stations, and each base station will The load information of itself and other base stations is sorted and saved in the form of a sorted list;
  • Step S202 After the core network fails, each base station finds the lowest load base station (ie, base station 1) according to its own load ordering list of each base station; then each base station (base station 1 and base station 2) sends a request to the lowest load base station 1. The message requests the base station 1 as a base station for the temporary core network.
  • Step S203 After receiving the request message, the base station 1 with the lowest load does not agree to serve as the temporary core network, and replies to the other base stations (base station 2 and base station 3) with a reject message.
  • Step S204 After receiving the rejection message, the other base stations (the base station 2 and the base station 3) send a request message to the base station 2 with the second load.
  • Step S205 After receiving the request message in step S204, the base station 2 agrees to serve as a base station for the temporary core network, and returns a consent message to other base stations (base station 1 and base station 3), and other base stations (base station 1 and base station 3) When the response message is received, the base station 2 is regarded as the temporary core network and Communicate. As shown in FIG. 4, it is still another flowchart of a method for selecting a temporary core network according to an embodiment of the present invention.
  • base station 1 There are three base stations under the core network, namely, base station 1, base station 2 and base station 3. There are physical interfaces between the base stations.
  • Step S301 The unified decision information and the ruling criterion are set on the three base stations, where the decision information is the processing capability of the base station, and the processing criterion is: using the base station used by the base station with high processing capability as the temporary core network as the ruling criterion;
  • the base station transmits the processing capability of each base station in real time or periodically through the interface between the base stations.
  • the processing capability from high to low is base station 1, base station 2, and base station 3; each base station can receive other each.
  • the processing capability of the base station, each base station sorts the processing capabilities of itself and other base stations, and saves them in the form of a sorted list.
  • Step S302 After the core network fails, each base station finds the base station with the highest processing capability (ie, base station 1) according to its own sorting list of processing capabilities of each base station; each base station (base station 2 and base station 3) sends the base station with the highest processing capability. A request message is sent to request the base station 1 as a base station for the temporary core network.
  • Step S303 After receiving the request message, the base station 1 with the highest processing capability agrees to use the base station as the temporary core network, and sends a response message to the other base stations (base station 2 and base station 3) to inform the consent information, and the other base stations (base station 2) And when the base station 3 receives the response message for the consent information, the base station 1 is regarded as the base station for the temporary core network and communicates with the base station.
  • FIG. 5 is still another flowchart of a method for selecting a temporary core network according to an embodiment of the present invention.
  • the base station 1 There are three base stations under the core network, namely, the base station 1, the base station 2, and the base station 3, where: there is no physical interface between the base station 2 and the base station 3, and information between the base station 2 and the base station 3 needs to be performed by the base station 1. Forward.
  • Step S401 The three base stations set unified decision information and a ruling criterion, and the ruling information is a processing capability, where the ruling criterion is: a base station used by the base station with high processing capability as a temporary core network as a ruling criterion, the base station 1 and the base station 2.
  • the base station 1 and the base station 3 transmit the processing capability of each base station in real time or periodically through the inter-base station interface, and the base station 2 and the base station 3 transmit the processing capability of each base station through the base station 1 in real time or periodically; each base station can receive other each The processing capability of the base station, each base station sorts the processing capabilities of itself and other base stations, and saves them in the form of a sorted list.
  • Step S402 After the core network fails, each base station finds the lowest load base station (ie, base station 2) according to its own load sorting list of base stations, and the base station 1 passes the interface between the base station 1 and the base station 2 to the base station with the highest processing capability. 2, a request message is sent, requesting the base station 2 to serve as a base station for the temporary core network; and the base station 3 forwards through the base station 1 a request message requesting the base station 2 as a base station for the temporary core network.
  • base station 2 the lowest load base station
  • Step S403 After receiving the request message, the base station 2 with the highest processing capability agrees to use the base station used as the temporary core network to reply the response message to the interface base station 1 that is directly connected to itself, and forwards the response message to the base station 3 through the base station 1.
  • the base station 2 receives the response message as the consent, the base station 2 is regarded as the base station for the temporary core network and communicates with it.
  • an embodiment of the present invention provides a base station, where the base station includes:
  • the information setting unit 501 is configured to set unified decision information and a rule of judgment; the decision information includes: processing capability and load information.
  • the above-mentioned ruling criterion is determined according to the magnitude of the processing capability or the load of the load information reaction: a base station used as a temporary core network by a base station having a small load, or a base station used as a temporary core network by a large base station with high processing capability.
  • the information receiving unit 502 is configured to receive the decision information sent by the other base station and send the decision information of the other base station to the other base station.
  • the information receiving unit 502 is configured to receive other base stations for real-time or periodic transmission.
  • the ruling result accepting unit 503 is configured to: after the failure of the core network, accept the ruling results of the respective base stations according to the judgment information and the ruling criteria, and become a temporary core network.
  • the base station provided in this embodiment transmits the decision information in real time between the base stations.
  • a base station is determined as a temporary core network according to the decision information and the pre-established decision criterion, and the function of the substitute core network serves the users under each base station.
  • the acknowledgment result accepting unit 503 further includes: a request receiving subunit 504, configured to receive request information sent by the other base station to be a temporary core network;
  • the response sending subunit 505 is configured to send, to the other base station, response information that agrees to be the temporary core network.
  • the function of serving the user by the base station used as the temporary core network is realized.
  • the foregoing judgment information includes: processing capability and load information.
  • the embodiment of the present invention further provides a trunking communication system, which includes: a first base station 11 and other base stations 12 having at least one base station, and the foregoing first base station 11 and other base stations 12 are provided.
  • a trunking communication system which includes: a first base station 11 and other base stations 12 having at least one base station, and the foregoing first base station 11 and other base stations 12 are provided.
  • There are unified decision information and ruling criteria and the above base stations 11, 12 are connected to the server 13 by wireless, and the decision information includes: processing capability and load information.
  • the above-mentioned ruling criterion is determined according to the magnitude of the processing capability or the load of the load information reaction: a base station used as a temporary core network by a base station having a small load, or a base station used as a temporary core network by a base station having a large processing capability .
  • the first base station 11 is configured to receive the decision information sent by the other base station 12 and send its own decision information to other base stations 12. After the core network fails, the other base stations 12 are accepted according to the judgment information and the ruling criterion. The result of the ruling became a temporary core network.
  • the other base station 12 is configured to send the judgment information to the first base station 11 and receive the judgment information sent by the first base station 11, and after the core network fails, accept the first base station 11 according to the judgment information and the rule of judgment.
  • the result of the ruling became a temporary core network.
  • the first base station 11 and the other base stations 12 send decision information to each other in real time or periodically.
  • the system provided in this embodiment transmits the decision information in real time between the base stations.
  • a base station is determined as a temporary core network according to the decision information and the pre-established decision criterion, and the function of the substitute core network serves the users under each base station.
  • the first base station 11 is configured to receive request information sent by the other base station 12 to be a temporary core network, and send response information to the other base station 12 to be a temporary core network.
  • the other base station 12 is configured to A base station 11 transmits request information requesting the first base station 11 to become a temporary core network, and receives response information returned by the first base station 11.
  • the function of serving the user by the base station used as the temporary core network is realized.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Databases & Information Systems (AREA)
  • Computer Security & Cryptography (AREA)
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Abstract

本发明公开了一种临时核心网的选取方法、基站及集群通信系统，用于解决在核心网出现故障时，选取临时核心网的技术问题。本发明在基站间实时传输判决信息，当核心网发生故障时，根据该判决信息以及预先制定好的判决准则裁决出一个基站作为临时核心网，替代核心网的功能为各个基站下的用户服务，从而解决了在核心网出现故障时，临时核心网的选取问题。

Description

临时核心网的选取方法、 基站及集群通信系统 技术领域
本发明涉及无线通信技术领域， 具体是指在长期演进 （Long Term Evolution, LTE )集群通信系统中的临时核心网的选取方法、 基站及集群通 信系统。 背景技术
集群通信系统是为了满足行业用户指挥需求而开发的、 面向特定行业 应用的专用无线通信系统， 集群通信系统中大量无线用户共享少量无线信 道， 以指挥调度为主体应用， 是一种多用途、 高效能的无线通信系统。 集 群通信系统在政府部门、 公共安全、 应急通信、 电力、 民航、 石油化工和 军队等领域有着广泛的应用市场。
集群通信系统的基本特征有釆用点对多点的半双工通信方式， 多用户 共享下行无线资源， 具有组呼、 单呼等快速指挥调度能力， 网络可靠性、 安全性要求高， 具有故障弱化和脱网直通等能力。 由于集群通信系统多用 于军事， 公共安全， 紧急突发情况等， 这就要求宽带无线接入系统具有更 高的容错处理能力， 冗余备份能力， 当网络侧 （核心网） 出现故障的情况 下， 集群用户应仍能够进行通信， 使得网络侧故障所带来的影响尽可能弱 化， 并使风险降到最低。 目前基于 TD-LTE (大唐电信 -长期演进）技术的 宽带数字集群通信系统通常釆用由基站担当临时核心网的方法进行故障弱 化， 但对于如何选取合适的基站作为临时核心网还没有提出可行的解决方 案。 发明内容
本发明的主要目的是提供一种临时核心网的选取方法、 基站及集群通 信系统， 在核心网出现故障时， 能够有效的切换到合适的基站， 使该基站 作为临时核心网为用户服务。
本发明解决其技术问题所釆用的技术方案是：
本发明提供一种临时核心网的选取方法， 包括：
在基站上设置统一的判决信息和裁决准则；
接收其他基站发送过来的判决信息并向其他基站发送自身的判决信 息；
当核心网出现故障后， 接受各个基站根据所述判决信息和裁决准则的 裁决结果， 成为临时核心网。
优选地， 所述接收其他基站发送过来的判决信息并向其他基站发送自 身的判决信息， 具体包括：
接收其他基站实时或者周期性传输过来的判决信息， 并实时或者周期 性的向其他基站发送自身的判决信息。
优选地， 所述接受各个基站根据所述判决信息和裁决准则的裁决结果， 成为临时核心网， 具体包括：
接收所述其他基站发送的请求其成为临时核心网的请求信息； 向所述其他基站发送同意成为临时核心网的响应信息。
优选地， 所述判决信息包括： 处理能力和负荷信息。
本发明提供一种基站， 包括：
信息设置单元， 用于设置统一的判决信息和裁决准则；
信息接收单元， 用于接收其他基站发送过来的判决信息并向其他基站 发送自身的判决信息；
裁决结果接受单元， 用于： 当核心网出现故障后， 接受各个基站根据 所述判决信息和裁决准则的裁决结果， 成为临时核心网。
优选地， 所述信息接收单元接收其他基站实时或者周期性传输过来的 判决信息， 并实时或者周期性的向其他基站发送自身的判决信息。
优选地， 所述裁决结果接受单元， 还包括：
请求接收子单元， 用于接收所述其他基站发送的请求其成为临时核心 网的请求信息；
响应发送子单元， 用于向所述其他基站发送同意成为临时核心网的响 应信息。
优选地， 所述判决信息包括： 处理能力和负荷信息。
本发明提供一种集群通信系统， 其包括： 第一基站和至少具有两个基 站的其他基站， 所述第一基站和其他基站上都设置有统一的判决信息和裁 决准则， 其中：
所述第一基站， 用于接收所述其他基站发送过来的判决信息并向其他 基站发送自身的判决信息， 当核心网出现故障后， 接受各个基站根据所述 判决信息和裁决准则的裁决结果， 成为临时核心网。
所述其他基站， 用于向所述第一基站发送判决信息， 并接收所述第一 基站发送过来的判决信息， 当核心网出现故障后， 根据所述判决信息和裁 决准则裁决所述第一基站成为临时核心网。
优选地， 所述第一基站和所述其他基站之间实时或者周期性的相互发 送判决信息。
优选地， 所述第一基站， 用于接收所述其他基站发送的请求其成为临 时核心网的请求信息； 向所述其他基站发送同意成为临时核心网的响应信 息；
所述其他基站， 用于向所述第一基站发送请求所述第一基站成为临时 核心网的请求信息， 并接收所述第一基站返回的响应信息。 实施本发明的技术方案， 具有以下有益效果： 本发明提供的临时核心 网的选取方法、 基站及集群通信系统， 在基站间实时传输判决信息。 当核 心网发生故障时， 根据该判决信息以及预先制定好的判决准则裁决出一个 基站作为临时核心网， 替代核心网的功能为各个基站下的用户服务。 附图说明
图 1为本发明实施例提供的临时核心网的选取方法的一流程图； 图 2为本发明实施例提供的接受各个基站根据上述判决信息和裁决准 则的裁决结果成为临时核心网的具体流程图；
图 3为本发明实施例提供的临时核心网的选取方法的又一流程图； 图 4为本发明实施例提供的临时核心网的选取方法的又一流程图； 图 5为本发明实施例提供的临时核心网的选取方法的又一流程图； 图 6为本发明实施例提供的基站结构示意图；
图 7为本发明实施例提供的基站的另一结构示意图。
图 8为本发明实施例提供的集群通信系统的架构图。 具体实施方式
为了使本发明的目的、 技术方案及优点更加清楚明白， 以下结合附图 及实施例， 对本发明进行进一步详细说明。 应当理解， 此处所描述的具体 实施例仅仅用以解释本发明， 并不用于限定本发明。 本发明实施例提供一种临时核心网的选取方法， 如图 1 所示， 该方法 包括：
步骤 S101、 设置统一的判决信息和裁决准则；
在所有的基站上设置统一的判决信息和裁决准则， 当然也包括在该将 来被选为核心网的基站上也设置该判决信息和裁决准则。 该判决信息包括： 处理能力和负荷信息。 上述裁决准则为根据该处理能力大小或负荷信息反 应的负荷大小来决定： 由负荷小的基站来作为临时核心网之用的基站， 或 者由处理能力大的基站来作为临时核心网之用的基站。
步骤 S102、 接收其他基站发送过来的判决信息并向其他基站发送自身 的判决信息；
接收其他基站实时或者周期性传输过来的判决信息， 并实时或者周期 性的向其他基站发送自身的判决信息。
该集群通信系统的各个基站之间通过接口实时或周期的传输判决信 息， 两个基站之间存在物理接口的， 可以直接通过接口传输判决信息， 两 个基站之间不存在物理接口的， 通过其他相互之间具有物理接口的基站作 为中继基站来转发判决信息。
步骤 S103、 当核心网出现故障后， 接受各个基站根据上述判决信息和 裁决准则的裁决结果， 成为临时核心网。
当核心网出现故障后， 根据判决信息并根据上述裁决规则， 由负荷小 的基站来作为临时核心网之用的基站， 或者由处理能力大基站来作为临时 核心网之用的基站。
该基站替代核心网的功能为各个基站下的用户服务。
如图 2所示， 进一步的实施例中， 在上述步骤 S103接受各个基站根据 上述判决信息和裁决准则的裁决结果， 成为临时核心网， 具体包括步骤： 步骤 S131、 接收所述其他基站发送的请求其成为临时核心网的请求信 息；
其他各基站向作为临时核心网之用的基站发送请求信息， 两个基站之 间存在物理接口的， 直接通过接口发送请求信息， 两个基站之间不存在物 理接口的， 通过其他基站作为中继转发请求信息。
步骤 S 131、 向所述其他基站发送同意成为临时核心网的响应信息。 作为临时核心网之用的基站回复响应信息作为应答， 基站间存在物理 接口的， 直接通过接口发送请求信息， 基站间不存在物理接口的， 通过其 他基站作为中继转发请求信息； 如果， 该基站同意作为临时核心网， 则回 复同意成为临时核心网的响应信息。 如果不同意， 也回复拒绝同意作为临 时核心网的响应消息。 以实现该被成为临时核心网之用的基站为用户服务 的功能。 如图 3 所示， 为本发明实施例提供的临时核心网的选取方法的另一流 程图； 该系统的核心网下存在 3个基站分别为基站 1、 基站 2和基站 3 , 各 基站间存在物理接口。
步骤 S201、 各基站设定统一的判决信息和裁决准则， 该判决信息为负 荷信息， 该裁决准则是： 以负荷小的基站做临时核心网之用的基站为裁决 准则； 各个基站之间通过基站之间接口实时或周期的传输各基站的负荷信 息， 该实施例中负荷由低到高依次是基站 1、 基站 2、 基站 3; 各基站均能 收到其他各基站的负荷信息， 各基站将自己和其他各基站的负荷信息进行 排序， 并以排序列表的形式保存下来；
步骤 S202、 当核心网出现故障后， 各基站根据自己对各基站负荷排序 列表找出负荷最低的基站（即基站 1 ); 然后各基站（基站 1和基站 2 ) 向 负荷最低的基站 1发出请求消息， 请求基站 1作为临时核心网之用的基站。
步骤 S203、 负荷最低的基站 1收到请求消息后， 不同意作为临时核心 网， 向其他各基站（基站 2和基站 3 ) 回复拒绝消息。
步骤 S204、 其他各基站（基站 2和基站 3 )收到上述拒绝消息后， 则 向负荷次之的基站 2发出请求消息。
步骤 S205、基站 2收到步骤 S204中的请求消息后， 同意作为临时核心 网之用的基站， 向其他各基站 (基站 1和基站 3 )回复同意消息， 其他各基 站（基站 1和基站 3 )收到应答消息为同意， 则视基站 2为临时核心网并与 之进行通信。 如图 4所示， 为本发明实施例提供的临时核心网的选取方法的又一流 程图；
该核心网下存在 3个基站分别为基站 1、 基站 2和基站 3 , 各个基站间 存在物理接口。
步骤 S301、 三个基站上都设定统一的判决信息和裁决准则， 该判决信 息为基站的处理能力， 该处理准则是： 以处理能力高的基站做临时核心网 之用的基站为裁决准则；
基站之间通过基站之间的接口实时或周期的传输各基站的处理能力， 该实施例中处理能力由高到低依次是基站 1、 基站 2、 基站 3 ; 每个基站都 能收到其他各基站的处理能力， 各基站将自己和其他各基站的处理能力进 行排序， 以排序列表的形式保存下来。
步骤 S302、 当核心网出现故障后， 各基站根据自己对各基站处理能力 排序列表找出处理能力最高的基站 (即： 基站 1 ); 各个基站 （基站 2和基 站 3 )向处理能力最高的基站 1发出请求消息，请求基站 1作为临时核心网 之用的基站。
步骤 S303、 处理能力最高的基站 1收到请求消息后， 同意作为临时核 心网之用的基站， 向其他各基站（基站 2和基站 3 )回复应答消息告知该同 意信息， 其他各基站（基站 2和基站 3 )收到为同意信息的应答消息时， 则 视基站 1为临时核心网之用的基站并与之进行通信。 如图 5 所示， 为本发明实施例提供的临时核心网的选取方法的又一流 程图；
核心网下存在 3个基站分别为基站 1、 基站 2和基站 3 , 其中： 基站 2 和基站 3间没有物理接口， 基站 2与基站 3间的信息需要通过基站 1进行 转发。
步骤 S401、 三个基站设定统一的判决信息和裁决准则， 该判决信息为 处理能力， 该裁决准则是： 以处理能力高的基站做临时核心网之用的基站 为裁决准则，基站 1和基站 2,基站 1和基站 3通过基站间接口实时或周期 的传输各基站的处理能力， 基站 2和基站 3通过基站 1实时或周期的传输 各基站的处理能力； 每个基站都能收到其他各基站的处理能力， 各基站将 自己和其他各基站的处理能力进行排序， 以排序列表的形式保存下来。
步骤 S402、 当核心网出现故障后， 各基站根据自己对各基站负荷排序 列表找出负荷最低的基站 (即： 基站 2 ), 基站 1通过基站 1与基站 2间的 接口向处理能力最高的基站 2发出请求消息， 请求基站 2作为临时核心网 之用的基站； 基站 3通过基站 1转发请求基站 2作为临时核心网之用的基 站的请求消息。
步骤 S403、 处理能力最高的基站 2收到请求消息后， 同意作为临时核 心网之用的基站， 向与自己直接物理连接的接口基站 1 回复应答消息； 并 通过基站 1向基站 3转发应答消息， 其他各基站（基站 1和基站 3 )收到应 答消息为同意， 则视基站 2为临时核心网之用的基站并与之进行通信。 如图 6所示， 本发明实施例提供一种基站， 该基站包括：
信息设置单元 501 , 用于设置统一的判决信息和裁决准则； 该判决信息 包括： 处理能力和负荷信息。 上述裁决准则为根据该处理能力大小或负荷 信息反应的负荷大小来决定： 由负荷小的基站来作为临时核心网之用的基 站， 或者由处理能力大基站来作为临时核心网之用的基站。
信息接收单元 502 ,用于接收其他基站发送过来的判决信息并向上述其 他基站发送自身的判决信息； 其中， 具体的实施例中， 上述信息接收单元 502, 用于接收其他基站实时或者周期性传输过来的判决信息， 并实时或者 周期性的向其他基站发送自身的判决信息。 裁决结果接受单元 503 , 用于： 当核心网出现故障后， 接受各个基站根 据上述判决信息和裁决准则的裁决结果， 成为临时核心网。
本实施例提供的基站， 在基站之间实时传输判决信息。 当核心网发生 故障时， 根据该判决信息以及预先制定好的判决准则裁决出一个基站作为 临时核心网， 替代核心网的功能为各个基站下的用户服务。
如图 7所示， 进一步的实施例中， 上述裁决结果接受单元 503还包括： 请求接收子单元 504,用于接收所述其他基站发送的请求其成为临时核 心网的请求信息；
响应发送子单元 505 ,用于向所述其他基站发送同意成为临时核心网的 响应信息。 以实现该被成为临时核心网之用的基站为用户服务的功能。
其中， 上述判决信息包括： 处理能力和负荷信息。 如图 8所示， 本发明实施例还提供一种集群通信系统， 其特征在于， 包括： 第一基站 11和至少具有一个基站的其他基站 12, 上述第一基站 11 和其他基站 12 上都设置有统一的判决信息和裁决准则， 上述基站 11、 12 都通过无线方式连接服务器 13 , 该判决信息包括： 处理能力和负荷信息。 上述裁决准则为根据该处理能力大小或负荷信息反应的负荷大小来决定： 由负荷小的基站来作为临时核心网之用的基站， 或者由处理能力大的基站 来作为临时核心网之用的基站。
其中：
上述第一基站 11 ,用于接收上述其他基站 12发送过来的判决信息并向 其他基站 12发送自身的判决信息， 当核心网出现故障后， 接受上述其他基 站 12才艮据上述判决信息和裁决准则的裁决结果， 成为临时核心网。
上述其他基站 12, 用于向上述第一基站 11发送判决信息， 并接收上述 第一基站 11发送过来的判决信息， 当核心网出现故障后， 接受第一基站 11 根据上述判决信息和裁决准则的裁决结果， 成为临时核心网。 在本实施例 中， 上述第一基站 11和上述其他基站 12之间实时或者周期性的相互发送 判决信息。
本实施例提供的系统， 在基站之间实时传输判决信息。 当核心网发生 故障时， 根据该判决信息以及预先制定好的判决准则裁决出一个基站作为 临时核心网， 替代核心网的功能为各个基站下的用户服务。
进一步的实施例中，
上述第一基站 11 ,用于接收上述其他基站 12发送的请求其成为临时核 心网的请求信息；向上述其他基站 12发送同意成为临时核心网的响应信息； 上述其他基站 12 , 用于向上述第一基站 11发送请求该第一基站 11成 为临时核心网的请求信息， 并接收上述第一基站 11返回的响应信息。
以实现该被成为临时核心网之用的基站为用户服务的功能。
以上上述仅为本发明的较佳实施例而已， 并不用以限制本发明， 凡在 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 在本发明的保护范围之内。

Claims

权利要求书
1、 一种临时核心网的选取方法， 其特征在于， 该方法包括： 设置统一的判决信息和裁决准则；
接收其他基站发送过来的判决信息并向其他基站发送自身的判决信 息；
当核心网出现故障后， 接受各个基站根据所述判决信息和裁决准则的 裁决结果， 成为临时核心网。
2、 如权利要求 1所述方法， 其特征在于， 所述接收其他基站发送过来 的判决信息并向其他基站发送自身的判决信息， 具体包括：
接收其他基站实时或者周期性传输过来的判决信息， 并实时或者周期 性的向其他基站发送自身的判决信息。
3、 如权利要求 1所述方法， 其特征在于， 所述接受各个基站根据所述 判决信息和裁决准则的裁决结果， 成为临时核心网， 具体包括：
接收所述其他基站发送的请求其成为临时核心网的请求信息； 向所述其他基站发送同意成为临时核心网的响应信息。
4、 如权利要求 1所述方法， 其特征在于， 所述判决信息包括： 处理能 力和负荷信息。
5、 一种基站， 其特征在于， 该基站包括：
信息设置单元， 用于设置统一的判决信息和裁决准则；
信息接收单元， 用于接收其他基站发送过来的判决信息并向其他基站 发送自身的判决信息；
裁决结果接受单元， 用于当核心网出现故障后， 接受各个基站根据所 述判决信息和裁决准则的裁决结果， 成为临时核心网。
6、 如权利要求 5所述基站， 其特征在于， 所述信息接收单元接收其他 基站实时或者周期性传输过来的判决信息， 并实时或者周期性的向其他基 站发送自身的判决信息。
7、 如权利要求 5所述基站， 其特征在于， 所述基站还包括： 请求接收子单元， 用于接收所述其他基站发送的请求其成为临时核心 网的请求信息；
响应发送子单元， 用于向所述其他基站发送同意成为临时核心网的响 应信息。
8、 如权利要求 5所述基站， 其特征在于， 所述判决信息包括： 处理能 力和负荷信息。
9、 一种集群通信系统， 其特征在于， 包括： 第一基站和至少具有一个 基站的其他基站， 所述第一基站和其他基站上都设置有统一的判决信息和 裁决准则， 其中：
所述第一基站， 用于接收所述其他基站发送过来的判决信息并向其他 基站发送自身的判决信息， 当核心网出现故障后， 接受所述其他基站根据 所述判决信息和裁决准则的裁决结果， 成为临时核心网；
所述其他基站， 用于向所述第一基站发送判决信息， 并接收所述第一 基站发送过来的判决信息， 当核心网出现故障后， 根据所述判决信息和裁 决准则裁决所述第一基站成为临时核心网。
10、 如权利要求 9 集群通信系统， 其特征在于， 所述第一基站和所述 其他基站之间实时或者周期性的相互发送判决信息。
11、 如权利要求 9集群通信系统， 其特征在于，
所述第一基站， 还用于接收所述其他基站发送的请求其成为临时核心 网的请求信息； 向所述其他基站发送同意成为临时核心网的响应信息； 所述其他基站， 还用于向所述第一基站发送请求所述第一基站成为临 时核心网的请求信息， 并接收所述第一基站返回的响应信息。
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