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Method and system for realizing synchronization between micro base stations

A micro base station, self-synchronizing technology, applied in the direction of synchronization device, radio wave measurement system, satellite radio beacon positioning system, etc., can solve the problems of system performance degradation, interference, crystal oscillator error, etc. Effect

Inactive Publication Date: 2011-12-07
张玉峻
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  • Abstract
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AI Technical Summary

Problems solved by technology

Due to cost considerations, micro base stations often do not install synchronization devices, and the crystal oscillators of micro base stations are generally low-cost products. After a period of use, the crystal oscillator will produce large errors.
Therefore, in current practical applications, high-precision synchronization between micro base stations and macro base stations, as well as between micro base stations, cannot be guaranteed. This undoubtedly has a large distance from the synchronization requirements of TDD wireless networks. More importantly, asynchronous When sending signals between base stations, there will be serious interference, so that the receiving equipment cannot distinguish the correct signal, and the system performance will be seriously degraded

Method used

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  • Method and system for realizing synchronization between micro base stations
  • Method and system for realizing synchronization between micro base stations
  • Method and system for realizing synchronization between micro base stations

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Embodiment Construction

[0046] figure 1 It is a flowchart of a method for realizing synchronization between micro base stations of the present invention, such as figure 1 shown, including:

[0047] Step 100: Preset synchronization information in the femtocell.

[0048] In this step, the synchronization information includes a synchronization status (stratum number) value and two indication values ​​indicating whether it is a self-synchronization indication of self-synchronization (indicate of self-synchronized).

[0049] Wherein, the synchronization state value can be represented by several bits, and the bits are all 0 corresponding to the minimum value (equal to 0); the bits are all 1 corresponding to the maximum value (MAX). The self-synchronization indication can be represented by 0 and 1, for example, 0 means yes, 1 means no, or vice versa. The initial value of the synchronization status value may be set to 0; the initial value of the self-synchronization indication may be set to "Yes".

[005...

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Abstract

The present disclosure provides a method and system for implementing synchronization among micro-base stations, including: a micro-base station intercepts a wireless reference signal of an air interface, and selects a synchronization reference object according to an intercepted wireless reference signal; and the micro-base station implements synchronization processing through detecting the wireless reference signal of the selected synchronization reference object, and adjusts its own synchronization information. The method for implementing synchronization among micro-base stations disclosed in the present disclosure is implemented on the basis of the wireless air interface signals of the micro-base stations, requires no additional synchronization hardware devices (such as Global Positioning Satellite (GPS) receiving apparatus, etc.) and has low cost. By the solution disclosed in the present disclosure, the mutual interference caused by asynchronization between a Time Division Duplex (TDD) micro-base station and other base stations is eliminated flexibly.

Description

technical field [0001] The invention relates to equipment synchronization technology, in particular to a method and system for realizing synchronization between time-division duplex miniature base stations. Background technique [0002] With the development of wireless communication technology, the base station of cellular network is developing towards the direction of miniaturization, low power consumption and low cost. For example, the recently appeared home base station (Home NodeB), pico base station (PicoNodeB) and other miniature base stations are representatives in this regard. In the cellular network, indoor coverage is mainly provided through a large number of plug-and-play micro base station equipment, as a supplement to the coverage of ordinary macro cells; on the other hand, from the perspective of users, the appearance of these micro base stations provides users with tariffs Preferential high-speed wireless access service, very convenient and affordable. [00...

Claims

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Application Information

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IPC IPC(8): H04W56/00G01S19/01
CPCH04W92/00H04W56/0015H04W92/20
Inventor 朱昀
Owner 张玉峻
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