WO2007104205A1 - Method for modifying the system time of the network side - Google Patents
Method for modifying the system time of the network side Download PDFInfo
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- WO2007104205A1 WO2007104205A1 PCT/CN2006/003779 CN2006003779W WO2007104205A1 WO 2007104205 A1 WO2007104205 A1 WO 2007104205A1 CN 2006003779 W CN2006003779 W CN 2006003779W WO 2007104205 A1 WO2007104205 A1 WO 2007104205A1
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- system time
- gps clock
- message
- network side
- side system
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/02—Details
- H04J3/06—Synchronising arrangements
- H04J3/0635—Clock or time synchronisation in a network
- H04J3/0638—Clock or time synchronisation among nodes; Internode synchronisation
- H04J3/0658—Clock or time synchronisation among packet nodes
- H04J3/0661—Clock or time synchronisation among packet nodes using timestamps
- H04J3/0667—Bidirectional timestamps, e.g. NTP or PTP for compensation of clock drift and for compensation of propagation delays
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W56/00—Synchronisation arrangements
Definitions
- the present invention relates to the field of CDMA (Code Division Multiple Acces) communication, and in particular to a method for realizing time for correcting network side mobile switching center system in a CDMA communication system .
- CDMA Code Division Multiple Acces
- BACKGROUND OF THE INVENTION Due to long-term operation of a switch or a mobile switching center (MSC), clock errors between system time and real time may gradually accumulate, which may cause a large difference, thereby bringing system bills, Inaccurate billing and inconsistency with system logs between other systems.
- the technical solution adopted by the patent application for modifying the network element clock is: a Real Time Clock (RTC) request in the communication network is sent from the network element to the management system via the data communication network; the time taken from the sending of the request to the reception of the RTC Comparing with a predetermined maximum value, if it is less than or equal to the maximum value, updating the network element RTC; if the maximum value is exceeded, discarding the value and transmitting a new request; receiving the acceptable RTC by subtracting the minimum transmission time or Correct by subtracting half of the actual transmission time.
- RTC Real Time Clock
- the technical problem to be solved by the present invention is to provide a method for correcting the network side system time for accurately correcting the system time on the network side.
- the present invention provides a method for correcting the network side system time, which is applicable to a code division multiple access communication system for accurately correcting system time on the network side, wherein the mobile switching center constructs a time stamp.
- the GPS clock request message is sent to the base station subsystem in the manner of an A interface custom message; the base station subsystem receives the GPS clock request message, and returns a GPS clock response message in the manner of an A interface custom message.
- the mobile switching center acquires a one-way delay according to the local system time and timestamp when receiving the GPS clock response message, and ⁇ ! When the GPS is found, the one-way delay is added to the GPS time 4 in the response message as the new network side system time.
- the method for correcting the network side system time wherein the A interface custom message is provided by the SCCP layer or the SUA layer in the SS7 protocol stack or the SigTran protocol stack.
- the method for modifying the network side system time wherein when the GPS clock request message is constructed, the method further includes a step of setting a timer by the mobile switching center.
- the method for correcting the network side system time wherein, when receiving the GPS clock response message, the method further includes the step of the mobile switching center clearing the timer.
- the method for correcting the network side system time wherein before receiving the GPS clock response message, the method further includes: determining whether the timer has timed out, and if the timeout has expired, the mobile switching center sends an alarm message. And discard the GPS clock response message received after the timer expires.
- the method for correcting the system time of the network side wherein the duration of the timer is a maximum value preset according to network characteristics.
- the method for correcting the network side system time wherein before the step of constructing the GPS clock request message, the mobile switching center further includes configuring or responding to an operation request from the background according to the code division multiple access communication system And initiating the step of acquiring the GPS clock of the base station subsystem.
- the method of gradual network side system time wherein the GPS clock response message is constructed by the base station subsystem in a real time clock of its GPS clock unit and a time in the GPS clock request message.
- the method for correcting network system time wherein after acquiring the new network side system time, the mobile switching center further determines whether the difference between the new network side system time and the current time is in a pre- The step within the acceptable range; if yes, the new network side system time is the network side system time; if not, the alarm information is sent.
- the invention utilizes the GPS clock unit inherent in the base station subsystem BSS, and uses the customized A interface message interaction to obtain a GPS clock with higher precision, and better correct the system time on the network side.
- the process for obtaining the GPS clock of the BSS implemented by the present invention is completely based on the existing mobile network, and does not require additional hardware overhead.
- FIG. 1 is a schematic diagram of a typical architecture of a CDMA mobile communication network in the prior art
- FIG. 2 is a structural diagram of two protocol stacks of an A interface message in the prior art
- DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS Referring to FIG. 1, a typical architecture of a CDMA mobile communication network in the prior art is described. In this architecture, the base station controller or base station subsystem BSS 20 interacts with the mobile switching center MSC 10 via the A interface 1002, which is an important part of the base station subsystem BSS 20.
- FIG. 2 is a schematic diagram of two protocol stack structures of the A interface message in the prior art.
- the A interface message is defined by the IOS (Internet Operate System) protocol, using the SCCP (Signaling Connection Control Part) layer or the SUA (Single User Account) layer. Service.
- the method for realizing the correction of the network side system time of the invention adopts the A interface message (a), (b) two protocol stack structures, wherein (a) the protocol stack structure is the SS7 protocol stack, and (b) the protocol stack structure is SigTran. Protocol stack.
- FIG. 3 is a flowchart of implementing the method for modifying the network side system time according to the present invention. As shown in FIG. 1 and FIG.
- Step 301 Mobile switching
- the central MSC 10 is configured according to the system, for example, configured with a periodic positive time, when the periodic correction time comes or responds to the background operation request, initiates a process of acquiring the GPS clock of the base station subsystem BSS 20;
- Step 302 the mobile switching center MSC 10 according to The current time of the system generates a time stamp (Time Stamp), constructs a GPS Time Request message, and sets a timer.
- the timer duration is a preset maximum value according to network characteristics;
- Step 303 further includes:
- the mobile switching center MSC 10 prohibits other methods of modifying the local system time during the existence of the timer;
- GPS time request GPS Time Request
- a interface 1002 custom message sent to the base station subsystem BSS 20 through the connectionless service provided by the SCCP layer of the SS7 signaling;
- the base station subsystem BSS 20 constructs a GPS Time Response message according to a real time clock of the GPS clock unit 201 and a time stamp carried in the GPS Time Request message.
- the connectionless A interface 1002 sends the form of the custom message to the mobile switching center MSC 10; Step 304, it is determined whether the timer has timed out, and if the timer has timed out, the mobile switching center MSC 10 sends an alarm message and discards The clock response message received after the timeout; if the timer has not timed out, the step ⁇ continues; Step 305, when the mobile switching center MSC 10 receives the response message, clears the timer, and then according to the local system time and time stamp.
- step 306 the mobile switching center MSC 10 determines whether the new network side system time is acceptable, That is, it is judged whether the calculated difference between the new network side system time and the current time is within a preset acceptable range, and if the difference is within a preset acceptable range, the new one is directly used.
- the network side system time is the network side system time, and the time of the local mobile switching center MSC10 is set; otherwise, the alarm information is sent for the operation and maintenance personnel to decide whether to directly accept the base station GPS clock.
- the present invention utilizes the A-interface message interaction between the network-side mobile switching center and the base station subsystem, and provides a solution for obtaining a high-precision GPS clock for the communication device manufacturer without adding additional hardware.
Abstract
A method for modifying the system time of the network side includes: the MSC creates a GPS clock request message containing a time flag, and transmits the message in the form of A interface self-defining message to the BTS; the BTS receives the GPS clock request message, and returns a GPS clock respond message in the form of A interface self-defining message to the MSC; when the MSC receives the GPS clock respond message, the MSC obtains the single route delay based on the local system time and the time flag, and uses the GPS clock in the GPS clock respond message plus the single route delay as the new system time of the network side. The present invention provides a method for obtaining highly accurate GPS clock while the telecommunication device manufacturer does not have to add extra hardware.
Description
一种修正网络侧系统时间的方法 技术领域 本发明涉及 CDMA(Code Division Multiple Acces, 码分多址)通信领域， 特别是涉及一种 CDMA通信系统中的修正网络侧移动交换中心系统时间的实 现方法。 背景技术 交换机或移动交换中心 (Mobile Switch Center, MSC)由于长期运行， 系统 时间和真实时间之间的时钟误差会逐渐累积， 有可能会造成出现较大的差值， 从而带来系统话单、 计费不准确以及与其他系统间系统日志不符等方面的不 利。 为了解决时钟误差积累所带来的种种不利， 有必要在系统中建立一种机 制， 定期在话务负荷低谷时， 用一个标准时钟校正网络侧系统时间。 由于基站 系统本身配置了高精度的 GPS(Global Position System, 全球定位系统）时钟单 元， 因此，可以通过 A接口信令获取基站子系统 (Base Station Sub-System , BSS) 的 GPS时间来爹正网络侧系统时间。 中国发明专利申请 (申请号为 02806521.2) "设置通信网络中的实时时钟" 提供了一种修正网元时钟的方法。 该专利申请修正网元时钟采用的技术方案 是： 通信网络中的实时时钟 (Real Time Clock , RTC)请求经数据通信网络从网元 发送给管理系统；将从发送请求到接收 RTC所耗费的时间与预定最大值进行比 较， 如果它小于或等于最大值， 则更新网元 RTC; 如果超过最大值， 则丟弃该 值， 并发送新的请求；接收的可接受 RTC通过减去最小传输时间或减去实际传 输时间的一半来加以校正。 上述专利申请提供的方法虽然可以修正网络侧系统时间，但得到的实时时 钟精度不够， 在一些对实时性要求较高的场合下， 该方法并不能有效的满足要 求。
发明内容 本发明所要解决的技术问题在于提供一种修正网络侧系统时间的方法，用 于精确修正网络侧的系统时间。 为了实现上述目的， 本发明提供了一种修正网络侧系统时间的方法， 适用 于码分多址通信系统， 用于精确修正网络侧的系统时间， 其特征在于， 移动交 换中心构造一含有时间戳的 GPS时钟请求消息， 并以 A接口自定义消息的方 式发送至基站子系统； 所述基站子系统接收所述 GPS 时钟请求消息， 并以 A 接口自定义消息的方式返回一 GPS时钟响应消息至所述移动交换中心；所述移 动交换中心在收到所述 GPS 时钟响应消息时根据本地系统时间和时间戳获取 单程延迟， 并^！寻所述 GPS时^ 向应消息中的 GPS时 4中加上该单程延迟作为新 的网络侧系统时间。 所述的修正网络侧系统时间的方法， 其中， 所述 A接口自定义消息由七 号信令协议栈或 SigTran协议栈中位于 SCCP层或 SUA层提供。 所述的修正网络侧系统时间的方法， 其中， 在构造所述 GPS时钟请求消 息时， 还包括一所述移动交换中心设置一定时器的步骤。 所述的修正网络侧系统时间的方法， 其中， 在接收所述 GPS时钟响应消 息时， 还包括一所述移动交换中心清除该定时器的步骤。 所述的修正网络侧系统时间的方法， 其中， 在接收所述 GPS时钟响应消 息之前， 还包括一判断该定时器是否已超时的步骤， 若已超时， 则所述移动交 换中心发出告警信息， 并丟弃该定时器超时以后收到的 GPS时钟响应消息。 所述的修正网络侧系统时间的方法， 其中， 所述定时器的时长为根据网络 特性预设的最大值。 所述的修正网络侧系统时间的方法， 其中， 在所述构造 GPS时钟请求消 息的步骤之前， 还包括一所述移动交换中心根据所述码分多址通信系统配置或 响应来自后台的操作请求而发起获取所述基站子系统 GPS时钟的步骤。 所述的 ίι 正网络侧系统时间的方法， 其中， 所述 GPS时钟响应消息由所 述基站子系统 居其 GPS时钟单元的实时时钟及所述 GPS时钟请求消息中的 时间 构造的。
所述的修正网络侧系统时间的方法，其中， 在获取所述新的网络侧系统时 间之后， 还包括一所述移动交换中心判断新的网络侧系统时间与当前时间的差 值是否在一预设的可接受范围之内的步骤； 若是， 则将该新的网络侧系统时间 为网络侧系统时间； 若否， 发送告警信息。 本发明利用基站子系统 BSS固有的 GPS时钟单元，使用自定义的 A接口 消息交互， 可以获得精度较高的 GPS时钟， 更好地修正网络侧的系统时间。 本 发明实现的获取 BSS的 GPS时钟的流程完全建立在现有移动网络基础之上， 不需要增加额外的硬件开销。 以下结合附图和具体实施例对本发明进行详细描述，但不作为对本发明的 限定。 附图说明 图 1为现有技术中一种 CDMA移动通讯网络的典型架构示意图； 图 2为现有技术中 A接口消息的两种协议栈结构图； 图 3为本发明修正网络侧系统时间的方法的实现流程图。 具体实施方式 请参阅图 1所示， 描述了现有技术中一种 CDMA移动通讯网络的典型架 构。 在该架构中， 基站控制器或基站子系统 BSS 20与移动交换中心 MSC 10 通过 A接口 1002交互， GPS时钟单元 201为基站子系统 BSS 20的重要部分。 请参阅图 2所示， 为现有技术中 A接口消息的两种协议栈结构图。 结合 图 1， A接口消息被 IOS(Internet Operate System, 网络操作系统)协议定义， 使 用 SCCP(Signaling Connection Control Part , 4言令连接控制部分）层或者 SUA(Single User Account, 单用户帐号)层提供的服务。 本发明实现修正网络侧 系统时间的方法采用 A接口消息 (a)、 （b)两种协议栈结构， 其中（a)协议栈结构 为七号信令协议栈， （b)协议栈结构为 SigTran协议栈。 在移动通讯网络中， 采用使用七号信令协议栈或 SigTran协议栈中， 位于 SCCP层或 SUA层上的 A接口信令中的自定义消息进^"交互； 请求消息体中 携带有时间戳， 根据收到响应消息时的时钟和时间戳， 计算单程延迟； 在响应
消息的 GPS时间基础上加上单程延迟， 即可作为网络侧新的标准时间。 这样， 移动交换中心 MSC 10的时钟精度可以大大提高。 请参阅图 3所示， 为本发明修正网络侧系统时间的方法的实现流程图。 结 合图 1、 2 所示， 本发明根据移动通讯网络的特点， 提供了一种采用基站子系 统 BSS的 GPS时间修正网络侧系统时间的方法， 该方法由如下的步骤实现： 步骤 301， 移动交换中心 MSC 10 ·据系统配置， 如， 配置了周期 正时 间， 当该周期修正时间到来或者响应后台操作请求 , 发起获取基站子系统 BSS 20的 GPS时钟的流程； 步骤 302 , 移动交换中心 MSC 10根据系统的当前时间生成时间戳 (Time Stamp) , 构造 GPS时钟请求 (GPS Time Request)消息， 并设置定时器， 定时器 时长为根据网络特性而预设的最大值； 步骤 303 , 又包 4舌： FIELD OF THE INVENTION The present invention relates to the field of CDMA (Code Division Multiple Acces) communication, and in particular to a method for realizing time for correcting network side mobile switching center system in a CDMA communication system . BACKGROUND OF THE INVENTION Due to long-term operation of a switch or a mobile switching center (MSC), clock errors between system time and real time may gradually accumulate, which may cause a large difference, thereby bringing system bills, Inaccurate billing and inconsistency with system logs between other systems. In order to solve the various disadvantages caused by the accumulation of clock errors, it is necessary to establish a mechanism in the system to periodically correct the network side system time with a standard clock when the traffic load is low. Since the base station system itself is equipped with a high-precision GPS (Global Position System) clock unit, the GPS time of the Base Station Sub-System (BSS) can be obtained through the A-interface signaling to correct the network. Side system time. Chinese invention patent application (application number 02806521.2) "Setting the real-time clock in the communication network" provides a method for correcting the network element clock. The technical solution adopted by the patent application for modifying the network element clock is: a Real Time Clock (RTC) request in the communication network is sent from the network element to the management system via the data communication network; the time taken from the sending of the request to the reception of the RTC Comparing with a predetermined maximum value, if it is less than or equal to the maximum value, updating the network element RTC; if the maximum value is exceeded, discarding the value and transmitting a new request; receiving the acceptable RTC by subtracting the minimum transmission time or Correct by subtracting half of the actual transmission time. Although the method provided by the above patent application can correct the network side system time, the obtained real-time clock accuracy is not sufficient, and in some occasions where the real-time performance is high, the method cannot effectively meet the requirements. SUMMARY OF THE INVENTION The technical problem to be solved by the present invention is to provide a method for correcting the network side system time for accurately correcting the system time on the network side. In order to achieve the above object, the present invention provides a method for correcting the network side system time, which is applicable to a code division multiple access communication system for accurately correcting system time on the network side, wherein the mobile switching center constructs a time stamp. The GPS clock request message is sent to the base station subsystem in the manner of an A interface custom message; the base station subsystem receives the GPS clock request message, and returns a GPS clock response message in the manner of an A interface custom message. The mobile switching center; the mobile switching center acquires a one-way delay according to the local system time and timestamp when receiving the GPS clock response message, and ^! When the GPS is found, the one-way delay is added to the GPS time 4 in the response message as the new network side system time. The method for correcting the network side system time, wherein the A interface custom message is provided by the SCCP layer or the SUA layer in the SS7 protocol stack or the SigTran protocol stack. The method for modifying the network side system time, wherein when the GPS clock request message is constructed, the method further includes a step of setting a timer by the mobile switching center. The method for correcting the network side system time, wherein, when receiving the GPS clock response message, the method further includes the step of the mobile switching center clearing the timer. The method for correcting the network side system time, wherein before receiving the GPS clock response message, the method further includes: determining whether the timer has timed out, and if the timeout has expired, the mobile switching center sends an alarm message. And discard the GPS clock response message received after the timer expires. The method for correcting the system time of the network side, wherein the duration of the timer is a maximum value preset according to network characteristics. The method for correcting the network side system time, wherein before the step of constructing the GPS clock request message, the mobile switching center further includes configuring or responding to an operation request from the background according to the code division multiple access communication system And initiating the step of acquiring the GPS clock of the base station subsystem. The method of gradual network side system time, wherein the GPS clock response message is constructed by the base station subsystem in a real time clock of its GPS clock unit and a time in the GPS clock request message. The method for correcting network system time, wherein after acquiring the new network side system time, the mobile switching center further determines whether the difference between the new network side system time and the current time is in a pre- The step within the acceptable range; if yes, the new network side system time is the network side system time; if not, the alarm information is sent. The invention utilizes the GPS clock unit inherent in the base station subsystem BSS, and uses the customized A interface message interaction to obtain a GPS clock with higher precision, and better correct the system time on the network side. The process for obtaining the GPS clock of the BSS implemented by the present invention is completely based on the existing mobile network, and does not require additional hardware overhead. The invention is described in detail below with reference to the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic diagram of a typical architecture of a CDMA mobile communication network in the prior art; FIG. 2 is a structural diagram of two protocol stacks of an A interface message in the prior art; Implementation flow chart of the method. DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS Referring to FIG. 1, a typical architecture of a CDMA mobile communication network in the prior art is described. In this architecture, the base station controller or base station subsystem BSS 20 interacts with the mobile switching center MSC 10 via the A interface 1002, which is an important part of the base station subsystem BSS 20. Please refer to FIG. 2, which is a schematic diagram of two protocol stack structures of the A interface message in the prior art. In conjunction with Figure 1, the A interface message is defined by the IOS (Internet Operate System) protocol, using the SCCP (Signaling Connection Control Part) layer or the SUA (Single User Account) layer. Service. The method for realizing the correction of the network side system time of the invention adopts the A interface message (a), (b) two protocol stack structures, wherein (a) the protocol stack structure is the SS7 protocol stack, and (b) the protocol stack structure is SigTran. Protocol stack. In the mobile communication network, a custom message in the A interface signaling located on the SCCP layer or the SUA layer in the SS7 protocol stack or the SigTran protocol stack is used to interact; the request message body carries a timestamp , calculating the one-way delay based on the clock and timestamp when the response message is received; The GPS time of the message plus a one-way delay can be used as the new standard time on the network side. Thus, the clock accuracy of the mobile switching center MSC 10 can be greatly improved. Please refer to FIG. 3, which is a flowchart of implementing the method for modifying the network side system time according to the present invention. As shown in FIG. 1 and FIG. 2, the present invention provides a method for correcting the network side system time by using the GPS time of the base station subsystem BSS according to the characteristics of the mobile communication network, and the method is implemented by the following steps: Step 301, Mobile switching The central MSC 10 is configured according to the system, for example, configured with a periodic positive time, when the periodic correction time comes or responds to the background operation request, initiates a process of acquiring the GPS clock of the base station subsystem BSS 20; Step 302, the mobile switching center MSC 10 according to The current time of the system generates a time stamp (Time Stamp), constructs a GPS Time Request message, and sets a timer. The timer duration is a preset maximum value according to network characteristics; Step 303, further includes:
3031 , 移动交换中心 MSC 10在该定时器存在期间， 禁止其它修改本地系 统时间的方法； 3031, the mobile switching center MSC 10 prohibits other methods of modifying the local system time during the existence of the timer;
3032 , GPS时 4中请求 (GPS Time Request)消息， 以 A接口 1002 自定义消 息的形式， 通过七号信令 SCCP层提供的无连接服务， 发送到基站子系统 BSS 20; 3032, GPS time request (GPS Time Request) message, in the form of A interface 1002 custom message, sent to the base station subsystem BSS 20 through the connectionless service provided by the SCCP layer of the SS7 signaling;
3033 , 保持设置的定时器不变； 3033, keep the set timer unchanged;
3034， 基站子系统 BSS 20根据其 GPS时钟单元 201的实时时钟， 以及 GPS时钟请求 (GPS Time Request)消息中携带的时间戳 (Time Stamp) , 构造 GPS 时钟响应（GPS Time Response)消息， 同样以无连接的 A接口 1002 自定义消息 的形式向移动交换中心 MSC 10发送； 步骤 304, 判断该定时器是否已超时， 若该定时器已超时， 则移动交换中 心 MSC 10发送告警信息， 并丟弃超时以后收到的时钟响应消息； 若该定时器 未超时， 则步 ί继续； 步骤 305 , 移动交换中心 MSC 10收到时 ^向应消息， 清除定时器， 才艮据 本地系统时间和时间戳， 计算出获取基站子系统 BSS 20的 GPS时钟流程的双
程延迟， 在基站子系统 BSS 20的 GPS时钟基础上， 加上一个单程延迟， 计算 出新的网络侧系统时间； 步聚 306 , 移动交换中心 MSC 10判断新的网络侧系统时间是否可接受， 即， 判断计算出来的新的网络侧系统时间与当前时间的差值是否在预先设定的 可接受范围之内， 若该差值在预先设定的可接受范围之内， 则直接使用新的网 络侧系统时间为网絡侧系统时间， 设置本地移动交换中心 MSC10 的时间； 否 则发送告警信息， 供操作维护人员决定是否直接接受基站的 GPS时钟。 综上所述， 本发明利用网络侧移动交换中心和基站子系统的 A接口消息 交互， 为通信设备制造商在不增加额外硬件的情况下， 提供了一种获得高精度 GPS时钟的方案。 当然， 本发明还可有其他多种实施例， 在不背离本发明 神及其实质的情 况下， 熟悉本领域的技术人员当可根据本发明作出各种相应的改变和变形， 但 这些相应的改变和变形都应属于本发明所附的权利要求的保护范围。
3034. The base station subsystem BSS 20 constructs a GPS Time Response message according to a real time clock of the GPS clock unit 201 and a time stamp carried in the GPS Time Request message. The connectionless A interface 1002 sends the form of the custom message to the mobile switching center MSC 10; Step 304, it is determined whether the timer has timed out, and if the timer has timed out, the mobile switching center MSC 10 sends an alarm message and discards The clock response message received after the timeout; if the timer has not timed out, the step ί continues; Step 305, when the mobile switching center MSC 10 receives the response message, clears the timer, and then according to the local system time and time stamp. , calculating the double of the GPS clock flow for acquiring the base station subsystem BSS 20 The process delay, based on the GPS clock of the base station subsystem BSS 20, adds a one-way delay to calculate a new network side system time; step 306, the mobile switching center MSC 10 determines whether the new network side system time is acceptable, That is, it is judged whether the calculated difference between the new network side system time and the current time is within a preset acceptable range, and if the difference is within a preset acceptable range, the new one is directly used. The network side system time is the network side system time, and the time of the local mobile switching center MSC10 is set; otherwise, the alarm information is sent for the operation and maintenance personnel to decide whether to directly accept the base station GPS clock. In summary, the present invention utilizes the A-interface message interaction between the network-side mobile switching center and the base station subsystem, and provides a solution for obtaining a high-precision GPS clock for the communication device manufacturer without adding additional hardware. There are a variety of other embodiments that can be made by those skilled in the art without departing from the spirit and scope of the invention. Changes and modifications are intended to be included within the scope of the appended claims.
Claims
1. 一种修正网络侧系统时间的方法， 适用于码分多址通信系统， 其特征在 于， 移动交换中心构造一含有时间戳的 GPS时钟请求消息 , 并以 A接口 自定义消息的方式发送至基站子系统； 所述基站子系统接收所述 GPS时 钟请求消息，并以 A接口自定义消息的方式返回一 GPS时钟响应消息至 所述移动交换中心； 所述移动交换中心在收到所述 GPS时钟响应消息时 才艮据本地系统时间和时间戳获取单程延迟， 并将所述 GPS时钟响应消息 中的 GPS时钟加上该单程延迟作为新的网络侧系统时间。 A method for correcting network-side system time, which is applicable to a code division multiple access communication system, wherein the mobile switching center constructs a time-stamped GPS clock request message and sends it to the A-interface custom message to a base station subsystem; the base station subsystem receives the GPS clock request message, and returns a GPS clock response message to the mobile switching center in a manner of an A interface custom message; the mobile switching center receives the GPS The one-way delay is obtained according to the local system time and time stamp when the clock responds to the message, and the GPS clock in the GPS clock response message is added to the one-way delay as the new network side system time.
2. 根据权利要求 1所述的修正网络侧系统时间的方法， 其特征在于， 所述 A接口自定义消息由七号信令协议栈或 SigTran协议栈中位于 SCCP层 或 SUA层提供。 The method for modifying the network side system time according to claim 1, wherein the A interface custom message is provided by the SCCP layer or the SUA layer in the SS7 protocol stack or the SigTran protocol stack.
3. 根据权利要求 1所述的修正网络侧系统时间的方法， 其特征在于， 在构 造所述 GPS时钟请求消息时， 还包括一所述移动交换中心设置一定时器 的步 ¾■。 The method for modifying the network side system time according to claim 1, wherein when the GPS clock request message is constructed, the mobile switching center further includes a step of setting a timer.
4. 根据权利要求 3所述的修正网络侧系统时间的方法， 其特征在于， 在接 收所迷 GPS时钟响应消息时， 还包括一所述移动交换中心清除该定时器 的步骤。 The method for modifying the network side system time according to claim 3, wherein when the GPS clock response message is received, the mobile switching center further includes the step of clearing the timer.
5. 根据权利要求 3所述的修正网络侧系统时间的方法， 其特征在于， 在接 收所迷 GPS时钟响应消息之前， 还包括一判断该定时器是否已超时的步 骤， 若已超时， 则所述移动交换中心发出告警信息， 并丟弃该定时器超 时以后收到的 GPS时 †响应消息。 The method for modifying the network side system time according to claim 3, further comprising: before receiving the GPS clock response message, a step of determining whether the timer has timed out, if it has timed out, The mobile switching center sends an alarm message and discards the GPS time response message received after the timer expires.
6. 根据权利要求 3、 4或 5所述的修正网络侧系统时间的方法，其特征在于 , 所述定时器的时长为根据网络特性预设的最大值。 The method for modifying the network-side system time according to claim 3, 4 or 5, wherein the duration of the timer is a maximum value preset according to network characteristics.
7. 根据权利要求 1、 2或 3所述的修正网络侧系统时间的方法，其特征在于， 在所述构造 GPS时钟请求消息的步骤之前， 还包括一所述移动交换中心 才艮据所述码分多址通信系统配置或响应来自后台的操作请求而发起获取 所述基站子系统 GPS时钟的步驟。
7. The method of modifying network-side system time according to claim 1, 2 or 3, wherein before said step of constructing a GPS clock request message, further comprising said mobile switching center The CDMA communication system configures or initiates the step of acquiring the base station subsystem GPS clock in response to an operational request from the background.
8. 根据权利要求 1、2或 3所述的修正网络侧系统时间的方法，其特征在于， 所述 GPS时钟响应消息由所述基站子系统根据其 GPS时钟单元的实时 时钟及所述 GPS时钟请求消息中的时间戳构造的。 The method for modifying network-side system time according to claim 1, 2 or 3, wherein the GPS clock response message is used by the base station subsystem according to a real-time clock of the GPS clock unit and the GPS clock. The timestamp in the request message is constructed.
9. 根据权利要求 1、 2或 3所述的修正网络侧系统时间的方法，其特征在于， 在获取所述新的网络侧系统时间之后， 还包括一所述移动交换中心判断 新的网络侧系统时间与当前时间的差值是否在一预设的可接受范围之内 的步骤； 若是， 则将该新的网络侧系统时间为网络侧系统时间； 若否， 发送告警信息。
The method for modifying the network side system time according to claim 1, 2 or 3, wherein after the acquiring the new network side system time, the mobile switching center further comprises a new network side. Whether the difference between the system time and the current time is within a preset acceptable range; if yes, the new network side system time is the network side system time; if not, the alarm information is sent.
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| CN115134906A (en) * | 2022-06-27 | 2022-09-30 | 国网青海省电力公司信息通信公司 | 5G-based device time service method and device and nonvolatile storage medium |
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| CN101986218B (en) * | 2010-11-03 | 2011-12-28 | 烟台持久钟表集团有限公司 | Clock delay compensation device and clock delay compensation synchronization method |
| CN112511363A (en) * | 2020-03-15 | 2021-03-16 | 中兴通讯股份有限公司 | Time delay performance evaluation method and device and storage medium |
| CN114879473B (en) * | 2022-04-22 | 2023-12-22 | 歌尔股份有限公司 | Smart watch calibration method and system, smart watch and readable storage medium |
Citations (2)
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| EP1215559A2 (en) * | 2000-12-13 | 2002-06-19 | Chrysalis- ITS Inc. | Method and system for time synchronization |
| CN1496618A (en) * | 2001-01-17 | 2004-05-12 | �����Ӣ��֪ʶ��Ȩ����˾ | Setting real time clock in communications networks |
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| EP1215559A2 (en) * | 2000-12-13 | 2002-06-19 | Chrysalis- ITS Inc. | Method and system for time synchronization |
| CN1496618A (en) * | 2001-01-17 | 2004-05-12 | �����Ӣ��֪ʶ��Ȩ����˾ | Setting real time clock in communications networks |
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| CN115134906A (en) * | 2022-06-27 | 2022-09-30 | 国网青海省电力公司信息通信公司 | 5G-based device time service method and device and nonvolatile storage medium |
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