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Time division duplex (TDD) base station synchronization method based on external reference clock and subframe synchronizing signals

A subframe synchronization and external reference technology, applied in the direction of synchronization devices, wireless communications, electrical components, etc., can solve the problems of reduced coverage radius of base stations and difficulty in obtaining air interface synchronization of adjacent base stations, so as to reduce the number of base stations, ensure handover and reassignment Effect of selected power, simplified clock and subframe synchronization system design

Active Publication Date: 2013-05-08
苏州智铸通信科技股份有限公司
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Problems solved by technology

[0005] The purpose of the present invention is to provide a TDD base station synchronization method based on an external reference clock and a subframe synchronization signal, which solves the difficulty in obtaining air interface synchronization of adjacent base stations in the prior art, and the coverage of the base station in the prior art to meet handover and reselection Radius reduction etc.

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  • Time division duplex (TDD) base station synchronization method based on external reference clock and subframe synchronizing signals
  • Time division duplex (TDD) base station synchronization method based on external reference clock and subframe synchronizing signals
  • Time division duplex (TDD) base station synchronization method based on external reference clock and subframe synchronizing signals

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Embodiment

[0026] The following only takes the TD-SCDMA system as an example to illustrate the working principle and flow of the system. Its principles and processes are also applicable to TDD-LTE system and other similar TDD (Time Division Multiple Access) systems. The base station synchronization method based on an external high-precision reference clock and a subframe synchronization signal is specifically performed in the following steps:

[0027] A high-precision clock signal is generated and sent by an external high-precision reference clock generator (for example: 26MHz clock). On the one hand, the high-precision clock is transmitted to all base stations (such as image 3 and Figure 4 ); on the other hand, the high-precision clock signal is also sent to the subframe synchronization signal generator for producing subframe synchronization signals (such as Figure 5 ); the high-precision reference clock and subframe synchronization signal are transmitted to all base stations in th...

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Abstract

The invention discloses a time division duplex (TDD) base station synchronization method based on external reference clock and subframe synchronizing signals. Through incoming of external reference high-precision reference clock and subframe synchronizing signals, all the base stations in a system obtain precise clock and subframe synchronization, therefore covering radiuses of all the base stations are widened, the number of base stations needed in the same coverage area is reduced, network coverage cost is greatly reduced, and meanwhile success rates of switching and reselection of the system are guaranteed.

Description

technical field [0001] The invention belongs to the technical field of 3G base station air interface synchronization, and in particular relates to a TDD base station synchronization method based on an external reference clock and a subframe synchronization signal. Background technique [0002] Indoor base station, or home base station (the Chinese term for English Femtocell), is an important technical solution to solve indoor coverage problems. By deploying indoor base stations, operators can solve the indoor coverage problem of the network, increase network capacity and coverage, and greatly reduce costs; and indoor base stations are also an effective means to realize the integration of fixed and mobile networks, which will create more new business models , Enhance user stickiness and reduce user loss. Due to the many advantages of indoor base stations, it has become the new darling of operators. [0003] With the development of technology and market, the application rang...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W56/00
Inventor 蒲锦先
Owner 苏州智铸通信科技股份有限公司
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