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Method and system for air interface synchronization between base stations

An air interface synchronization, inter-base station technology

Active Publication Date: 2013-12-11
COMBA TELECOM SYST CHINA LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] Embodiments of the present invention provide a base station and a method and system for air interface synchronization between base stations, which are used to solve the problem in the prior art that the time validity of the listening reference base station selected by the base station to be calibrated cannot be guaranteed. sync failure problem

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  • Method and system for air interface synchronization between base stations
  • Method and system for air interface synchronization between base stations

Examples

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Embodiment 1

[0075] Embodiment 1 of the present invention provides a method for air interface synchronization between base stations, such as figure 2 Shown is a flow chart of the steps of the method, which will be described in detail below.

[0076] Step 101: the base station to be calibrated determines a reference base station.

[0077] There are many methods for determining the reference base station. In Embodiment 1 of the present invention, it includes but is not limited to determining the reference base station in the following manner:

[0078] First, the base station to be calibrated scans the nearby base stations according to the locally configured air interface frequencies of other surrounding base stations, and screens out all base stations whose air interface frequency is the broadcast frequency.

[0079] Then, the base station to be calibrated determines the reception quality of the broadcast frequency points of the selected base stations, and selects the base station correspo...

Embodiment 2

[0117] The air interface synchronization method described in Embodiment 1 will be described in detail below in combination with the simulated data of the surrounding base stations acquired by the base station A to be calibrated in Table 1.

[0118]

[0119] Table 1

[0120] Embodiment 2 of the present invention mainly includes the following steps:

[0121] Step 1: The base station A to be calibrated determines the broadcast frequency point.

[0122] In the second embodiment, the base station A to be calibrated obtains 80 frequency points in total by scanning the air interface, that is, F0, F1 . . . F79.

[0123] From the information in Table 1, it can be seen that only F0, F1, F2, F3, and F4 are broadcast frequency points, and the other 75 frequency points are not broadcast frequency points. It is assumed that the broadcast frequency points F0, F1, F2, F3, and F4 correspond to the base station in turn 0, base station 1, base station 2, base station 3, base station 4.

[...

Embodiment 3

[0139] Embodiment 3 of the present invention provides a system for air interface synchronization between base stations belonging to the same inventive concept as Embodiment 1, such as Figure 4 As shown, the system specifically includes the following system units:

[0140] The base station to be calibrated 401 is configured to determine the first synchronization period and the offset in the first period of the selected reference base station, and adjust the local second synchronization period and the offset in the first period according to the first synchronization period and the offset in the first period The offset in the second period, and according to the adjusted second synchronization period and the offset in the second period, listen to and acquire the synchronization sequence issued by the reference base station, and use the synchronization sequence to communicate with the reference base station Perform synchronization, wherein, the reference base station listens to th...

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Abstract

The invention discloses a method and system for air interface synchronization between base stations. The method mainly comprises the following steps that the base station to be corrected dynamically adjusts a local second synchronization period and the offset in the second synchronization period according to a first synchronization period and the offset in the first synchronization period which are issued by a reference base station, so that the time when the base station to be corrected monitor the fact that the reference base station issues a synchronization sequence according to the adjusted second synchronization period and the adjusted offset in the second synchronization period does not overlap with the time when the reference base station monitors the fact that other base stations issue synchronization sequences according to the first synchronization period and the offset in the first synchronization period, and therefore the effectiveness of the reference base station selected by the base station to be corrected can be guaranteed. Therefore, the reliability of air interface synchronization is improved.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a base station and a method and system for air interface synchronization between base stations. Background technique [0002] As an important device in wireless communication technology, base stations have been widely deployed. The industry divides base stations into macro base stations and micro base stations according to the coverage and transmission power of base stations. In order to ensure the continuity of network coverage, the 3GPP (3rd Generation Partnership Project, third-generation partner) standard proposes an architecture to increase the coverage of several micro base stations within the coverage of macro base stations, that is, HetNet (Heterogeneous Network, heterogeneous network ) architecture. [0003] In the HetNet architecture, with the growth of indoor wireless communication network services, it is particularly urgent to achieve deep coverage and large-c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W56/00H04W88/08
Inventor 李伟丹
Owner COMBA TELECOM SYST CHINA LTD
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