Synchronization method, base station, network server and communication system
A technology of network server and base station, which is applied in communication between multiple stations, synchronization device, wireless communication, etc. It can solve problems such as inability to synchronize and base stations cannot receive, and achieve the effect of reducing costs
Active Publication Date: 2011-04-06
HUAWEI TECH CO LTD
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[0008] The embodiment of the present invention provides a synchronization method, a base station, a network server and a communication system, so as to solve the problem that the base station cannot receive the GPS signal and cause synchronization failure
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[0039] In order to express the purpose, technical solutions and advantages of the embodiments of the present invention more clearly, the technical solutions provided by the embodiments of the present invention will be described in detail below in conjunction with specific embodiments and drawings.
[0040] The following takes the WiMAX system as an example to describe the synchronization method provided by the embodiment of the present invention in detail. In the WiMAX system, the pilot signal may be a Preamble signal, and the embodiment of the present invention is not limited to the WiMAX system.
[0041] In the WiMAX system, the coverage distance of the Preamble signal of a base station is much higher than the coverage distance of its broadcast message and traffic channel. Using this feature, in the embodiment of the present invention, a base station that needs to be synchronized can receive the Preamble signal of a certain adjacent base station and By demodulating the Preamb...
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The embodiment of the invention provides a synchronization method, a base station, a network server and a communication system. The synchronization method comprises the following steps: receiving a Preamble signal which comes from a clock reference base station from a base station by a clock; detecting the Preamble signal to determine a phase deviation relative to the clock reference base station; determining a frequency deviation relative to the clock reference base station according to the phase deviation; performing time synchronization by the determined phase deviation and performing frequency synchronization by the frequency deviation to realize synchronization with the clock reference base station. By the synchronization method, the base station can determine the phase deviation relative to the clock reference base station to perform the rapid synchronization by detecting the Preamble signal of the clock reference base station in the present network.
Description
technical field [0001] The invention relates to communication technology, in particular to a synchronization method, a base station, a network server and a communication system. Background technique [0002] The synchronization of the base stations in the existing wireless communication system uses the Global Positioning System (GPS) (Global Position System) synchronization technology for synchronization. The existing Global Positioning System GPS is divided into: [0003] Space segment - GPS satellite constellation; [0004] Ground control part - ground monitoring system; [0005] User equipment part - GPS signal receiver. [0006] The GPS satellite constellation and the ground monitoring system work together to provide accurate time signals to the ground, which can cover all regions of the world. After receiving the time signals of the satellite constellation, the GPS signal receiver outputs precise 1PPS pulses and absolute time to the needs Synchronous communication eq...
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IPC IPC(8): H04W56/00H04B7/26H04J3/06
CPCH04W56/00
Inventor 刘洪黄晖林海鸿吴勇江胜峰伊成刚
Owner HUAWEI TECH CO LTD