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A method for synchronizing air interfaces of home base stations and base stations

A home base station and air interface synchronization technology, applied in the field of communication, can solve the problems of interference performance, degradation, synchronization, etc., and achieve the effect of reducing interference and improving performance

Active Publication Date: 2013-10-30
CHINA MOBILE COMM GRP CO LTD
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Problems solved by technology

However, if the macro base station adopts other special time slot configurations, Femtocell 2 cannot be synchronized with Femtocell 1 (see Table 1), resulting in interference and performance degradation

Method used

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  • A method for synchronizing air interfaces of home base stations and base stations
  • A method for synchronizing air interfaces of home base stations and base stations
  • A method for synchronizing air interfaces of home base stations and base stations

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Embodiment Construction

[0084] The preferred embodiments of the present invention will be described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0085] In order to ensure that TD-LTE femtocells can obtain synchronization in a unified manner in various complex deployment scenarios, especially to provide multi-level synchronization capabilities, the present invention proposes a synchronization method based on air interface relay designed for TDD systems. This method adjusts the special time slot of the home base station to a "relay time slot" as needed, so that the home base station can provide synchronization signals to other home base stations under any special time slot configuration, that is, the synchronization "relay" to other home base stations The home base station realizes the multi-level synchronizati...

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Abstract

The invention discloses a method for synchronizing air interfaces of home base stations and base stations. The method comprises: a standard home base station receives a synchronization relay request from a synchronization home base station and performs synchronization relay time slot configuration on the synchronization home base station according to special time slot configuration of the standard home base station; and the standard home base station sends synchronization signals to the synchronization home base station in a downlink special time slot. With the method for synchronizing the air interfaces of the home base stations and the base stations, after the home base station which plays the role of a standard base station receives the relay synchronization request, the home base station carries out a self-adaptive adjustment on the special time slot, so that the disadvantage that original synchronization methods can provide multistage synchronization only in limited scenarios is compensated, interference is reduced, and performance of the whole network is improved.

Description

technical field [0001] The present invention relates to TD-LTE technology in the field of communication, in particular to a method and device for synchronizing TD-LTE home base stations based on air interface relay. Background technique [0002] As a supplement to the indoor coverage of the cellular network, the femtocell provides users with voice and data services. However, the TDD system has higher requirements on the synchronization between base stations, and interference will be generated between out-of-synchronization base stations, especially the interference of TDD uplink and downlink cross time slots, resulting in network quality degradation. [0003] There are two situations in the deployment of TD-LTE home base stations. One is that there is no macro coverage network or other indoor distribution systems around the home base station. At this time, the home base station may not be synchronized with other base stations; the other is that one or more home base stations...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W56/00
Inventor 许宁龙紫薇
Owner CHINA MOBILE COMM GRP CO LTD
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