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Synchronization method for multiple low-power launching pads leaded by high-power launching pad

A transmitting station, low-power technology, applied in communication between multiple stations, synchronous signal speed/phase control, advanced technology, etc., can solve the problems of expensive optical fiber, unsuitable for small cell base stations, etc., and achieve cost reduction Effect

Active Publication Date: 2008-04-02
SHANGHAI RES CENT FOR WIRELESS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

If optical fibers are used to provide synchronization reference signals, the cost of laying a large number of optical fibers is very expensive, so although this method can be applied to the core network, it is not suitable for a large number of densely deployed small cell base stations

Method used

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  • Synchronization method for multiple low-power launching pads leaded by high-power launching pad

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Embodiment Construction

[0021] As shown in Figure 1, a synchronization method for multiple low-power transmitting stations led by a high-power transmitting station. The synchronization reference signal transmitted by the high-power transmitting station can simultaneously provide a large number of low-power transmitting stations within a large coverage area. common use.

[0022] In Figure 1, since the distance between a high-power transmitting station and each low-power transmitting station within its coverage may be different, when each low-power transmitting station synchronizes according to the reference synchronization signal, it is necessary to compensate the signal transmission delay separately Impact. After a low-power transmitting station receives the reference synchronization signal, the synchronization time tsynchronization can be obtained by the following formula:

[0023] t 同步 =f{t 接收 , τ, }

[0024] where t 接收 is the time when the reference synchronization signal is received, τ is th...

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Abstract

The present invention relates to a method for synchronizing a plurality of low-power sending stations which are dominated by a high-power sending station, each low-power sending station receives the reference synchronizing signal transmitted by the high-power sending station, does synchronizing according to the synchronizing signal and respectively compensates the signal transmission time delay. The high-power sending station can be broadcasting television base station and the low-power sending station can be one or a plurality of base stations selected from wireless metropolitan area network cellular base station, wireless local area network base station and wireless personal area network. The present invention settles the problem of synchronizing the considerable sending stations and can be widely used in the wireless communication system that needs to be done with network synchronizing, and reduces the cost of realizing the network synchronizing.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, specifically relates to the synchronization of a low-power transmitting station, and is applied to a wireless communication system requiring network synchronization. Background technique [0002] With the development of broadband wireless access technology and market, the bandwidth requirement of wireless access is increasing, and a higher carrier frequency has to be used for communication. Since the higher the carrier frequency, the more serious the transmission loss, so the coverage of the transmitting station is also reduced. When implementing small-scale coverage, the installation height of the launch station is low, and it may need to be installed indoors or under the eaves, so it is difficult to synchronize by directly receiving the reference signal transmitted by the GPS satellite. With the reduction of the coverage of the launch station, the number of the launch station is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/26H04L7/04
CPCY02D30/70
Inventor 张小东戎璐李明齐
Owner SHANGHAI RES CENT FOR WIRELESS TECH
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