Title:
METHOD FOR RESISTING SMALL BASE STATION UPLINK SIGNAL INTERFERENCE OF INDOOR DAS SYSTEM BASED ON ANTENNA SELECTION
Document Type and Number:
WIPO Patent Application WO/2016/107476
Kind Code:
A1
Abstract:
Provided in the present invention is a method for resisting small base station uplink signal interference of indoor DAS system based on antenna selection, the steps comprising: step 1: determining an initial access RU, and establishing an uplink; step 2: the access RU of UE1, on the basis of the level of interference, determines whether switching to a different RU is needed, and the access RU of UE1 continuously detects an SINR value at a set time interval, and compares same with a preset threshold value γ1; if the SINR value is lower than γ1, an MU sets the access RU and each peripheral RU as a candidate RU, and the MU, on the basis of the acquired SINR value of each RU, selects an SINR greater than γ1 and sets the RU having the greatest receiving signal power as the new access RU of UE1. The beneficial effects of the present invention are: (1) not needing to establish a coordination mechanism (sharing information) between the DAS system and the small base station, reducing the feedback link demands; (2) reducing the impact of interference by means of switching between RU, the implementation thereof being simple and not requiring complex signal technology; the present invention can be implemented on current DAS systems by means of simple software and hardware upgrades; and (3) fully taking into consideration SINR and receiving signal power, avoiding the problems triggered by the receiving signal power being too low due to the blind pursuit of SINR, such as the requirements for RU radio frequency front-end sensitivity.
Inventors:
PAN PENG (CN)
CHEN XIN (CN)
YAN JUNRONG (CN)
YAO YINGBIAO (CN)
CHEN XIN (CN)
YAN JUNRONG (CN)
YAO YINGBIAO (CN)
Application Number:
PCT/CN2015/098444
Publication Date:
July 07, 2016
Filing Date:
December 23, 2015
Export Citation:
Assignee:
SUNWAVE COMM CO LTD (CN)
International Classes:
H04W36/00; H04B7/04
Foreign References:
| CN104617995A | 2015-05-13 | |||
| CN102340859A | 2012-02-01 | |||
| US20140219162A1 | 2014-08-07 | |||
| CN103118408A | 2013-05-22 |
Attorney, Agent or Firm:
HANGZHOU JIUZHOU PATENT LTD. (CN)
杭州九洲专利事务所有限公司 (CN)
杭州九洲专利事务所有限公司 (CN)
Download PDF:
Previous Patent: VEHICLE IDENTIFICATION METHOD AND SYSTEM
Next Patent: PICTURE PROCESSING METHOD AND DEVICE
Next Patent: PICTURE PROCESSING METHOD AND DEVICE