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Air interface synchronization method, base stations, control device and wireless communication system

A technology between base stations and base stations, applied in the direction of synchronization devices, wireless communications, electrical components, etc., can solve the problems of high maintenance costs and high construction costs, and achieve the effect of reducing maintenance

Inactive Publication Date: 2014-05-14
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The implementation of the present invention provides a processing method, device and wireless communication system for realizing time synchronization of air interfaces between base stations, so as to solve the problems of high construction cost and high maintenance cost existing in the time synchronization between base stations using GPS

Method used

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  • Air interface synchronization method, base stations, control device and wireless communication system
  • Air interface synchronization method, base stations, control device and wireless communication system
  • Air interface synchronization method, base stations, control device and wireless communication system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0086] image 3 It is the processing method of the centralized controller in the air interface synchronization provided by the embodiment of the present invention, which is described in detail as follows.

[0087] S301. Acquire at least one time difference, where the time difference is a time difference between a first base station and a second base station.

[0088] The centralized controller acquires at least one time difference, which is the time difference between the first base station and the second base station. The above-mentioned at least one time difference includes a first time difference, and the first time difference is a time difference obtained according to the non-contention random access of the first UE handed over between the first base station and the second base station, and the first time difference may be obtained by the first base station according to the first receiving moment and the time difference between the first base station and the second base s...

Embodiment 2

[0117] exist figure 1 In the shown wireless communication system, a first UE is handed over from a first base station to a second base station.

[0118] Figure 6 It is a method for acquiring time difference by using an inter-station handover mode provided by an embodiment of the present invention, and is described in detail as follows.

[0119] S601. The first base station selects a second base station as a target base station according to the neighbor cell measurement report of the first UE, and sends a handover request message to the second base station.

[0120] S602. After receiving the handover request message sent by the first base station, the second base station sends a handover request confirmation message to the first base station, where the handover request confirmation message carries the index of the first random access preamble allocated by the second base station to the first UE .

[0121] S603. After receiving the handover request confirmation message sent ...

Embodiment 3

[0176] see figure 1 , the centralized controller 101 is independent of the base station, the base station 102a is a reference base station, and the time synchronization process between the base station 102b and the reference base station through an air interface is described in detail as follows.

[0177] When there is a UE 103a switched from base station 102a to base station 102b, the first time difference acquisition process between base stations is the same as in embodiment 2, base station 102a is used as the first base station, base station 102b is used as the second base station, and base station 102a reports the first time difference to the centralized controller 101.

[0178] When there is a UE 103b switched from base station 102b to base station 102a, the second time difference acquisition process between base stations is the same as that in Embodiment 2, base station 102a is used as the second base station, base station 102b is used as the first base station, and base...

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PUM

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Abstract

The invention discloses an air interface synchronization method, base stations, a control device thereof and a wireless communication system. By utilization of a non-competitive random access process of user equipment switched between the base stations, time difference between the base stations is obtained through signaling interaction, time adjustment amount of the non-reference base station is obtained according to a reference time of the reference base station, so that time adjustment is performed for the non-reference base station according to the time adjustment amount, and therefore time synchronization between the non-reference base station and the reference base station is achieved. According to the invention, air interface synchronization of the base stations is achieved simply and effectively by utilization of wireless network, expensive synchronization equipment is not required to be used, construction and maintenance costs are reduced, and economic and convenient technical effects are achieved.

Description

technical field [0001] The invention relates to the field of wireless communication, in particular to an air interface synchronization method, a base station, a control device and a wireless communication system. Background technique [0002] With the increasing demand for wireless network capacity, in order to obtain higher network capacity, site deployment is more intensive. For the Long Term Evolution (LTE) system, whether it is a Homogenous Network (HomNet) or a Heterogeneous Network (HomNet), due to the denser site deployment, the interference between cells is more serious, and the The user throughput drops, and in severe cases, it affects the normal work of edge users. The staggering of edge user resources can solve the problem of inter-cell interference. The existing practice is to use inter-cell time-domain interference coordination, and realize inter-cell interference staggering by coordinating the use of subframes between different cells. Specifically, it is rea...

Claims

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Application Information

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IPC IPC(8): H04W56/00
CPCH04W56/0015H04W56/0035H04W56/0045H04W36/08H04W36/0072H04W74/006H04W74/04
Inventor 胡军
Owner HUAWEI TECH CO LTD
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