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Time synchronization method of femto base station route (BSR) and system thereof

A time synchronization system and femto base station technology, applied in the field of communication, can solve the problem that GPS satellites cannot provide GPS clock sources, etc., and achieve the effect of stable and accurate clock synchronization

Active Publication Date: 2012-05-30
ALCATEL LUCENT SHANGHAI BELL CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] In order to solve the situation that GPS satellites cannot provide GPS clock sources due to faults, the present invention provides a method for using multiple clock sources to provide reference time for femto base station routers

Method used

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  • Time synchronization method of femto base station route (BSR) and system thereof
  • Time synchronization method of femto base station route (BSR) and system thereof
  • Time synchronization method of femto base station route (BSR) and system thereof

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Embodiment Construction

[0063] Such as figure 2 As shown, in the embodiment of the present invention, the STM-N line clock extraction device includes 6 units: SDH physical interface unit, regenerative section terminal unit, multiplex section terminal unit, synchronization equipment management function unit (SEM) and synchronization equipment time source. The above-mentioned units and the relationship between each unit will be described in detail below.

[0064] 1. SDH Physical Interface Module (SDH Physical Interface Module, SPI)

[0065] The SDH physical interface unit is the interface between the optical path and the equipment. It mainly implements optical / electrical conversion, electrical / optical conversion, extraction of line timing information, and detection of corresponding alarms. The SDH physical interface unit obtains line clock information (for example, TTL level clock), and sends the line clock information to the timing source unit of the synchronous equipment for phase locking. After l...

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Abstract

The invention relates to a time synchronization method of a femto base station route (BSR). The method comprises the following steps: extracting line clock information in a core network; comparing the core network line clock information with internal clock information and external clock information and determining the clock information with a highest synchronization quality grade; carrying out time synchronization of the femto BSR according to the clock information with the highest synchronization quality grade. A time synchronization system of the femto BSR comprises: an apparatus used to extract the line clock information in the core network, the apparatus used to comparing the core network line clock information with the internal clock information and the external clock information and determine the clock information with the highest synchronization quality grade and the apparatus used to carry out the time synchronization of the femto BSR according to the clock information with the highest synchronization quality grade. By using the method and the system of the invention, the clock synchronization between a femto BSR clock and a network time protocol (NTP) server can be stable and accurate.

Description

technical field [0001] The invention relates to the communication field, in particular to the core network time synchronization technology of Femto Femto base station router BSR (Base Station Route). Background technique [0002] The femto base station router is an extremely low transmission power communication base station router for family rooms, which extends the indoor coverage of mobile signals at a relatively low cost, meets the needs of mobile terminal users for high-speed data services in indoor scenarios, and can comprehensively provide Various traditional fixed-line services. With the increasing proportion of various indoor integrated services in communication services, Femto base station routers have shown significant advantages in supporting indoor integrated services due to their low price and convenient use. [0003] Femto base station routers extend the functions of communication base stations to the indoor environment. They also face new challenges in realiz...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W56/00H04W88/08H04W88/14
CPCH04J3/065H04J3/0691
Inventor 李彬彬
Owner ALCATEL LUCENT SHANGHAI BELL CO LTD
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