Sunwave Communications Co., Ltd.

Brav-o-tech Gmbh

Bti Wireless Limited

Junrong Yan

Xin Chen

Yingbiao Yao

Peng Pan

Rulong Chu

Xingbao Ou

Fangmin Xu

The disclosure discloses a method for distributing pilot frequency in a massive antenna system, including: dividing a pilot frequency set into three sub sets that are intersecting with each other, and then dividing the users of each cell into a cell central user and a cell edge user. The cell central users use an intersection set of three pilot frequency sub sets. The cell edge users of all cells use a difference set, an intersection set and a union set of three pilot frequency sub sets according to a certain rule. When it is designing to implement the pilot resource distribution plan of the massive antenna system, three cells that are adjacent with each other in the system are used as a cluster, and a pilot frequency use plan of any one cluster may be designed according to the method proposed by the disclosure, and then the same design plan is applied to other clusters in the system, and then is adjusted according to the user distribution of each cluster and the business distribution circumstance thereof.

Method for distributing pilot frequency in massive antenna system

Provided in the present invention is a method for avoiding downlink interference between an indoor DAS system and a small base station, the steps comprising: step 1: determining an initial access RU, and establishing a signal strength table; step 2: the DAS system, by means of the chosen RU, attempts to establish a downlink with UE, and detects the signal to interference plus noise ratio (SINR) value of the downlink signal of UE, and comparing same with a preset threshold value &#x3b3;; step 3: UEmaintains one or a plurality of RU downlinks assigned thereto by the DAS system, during the communication process continuously detects an SINR value at a set time interval, and on the basis of whether same is greater than &#x3b3;, ensures a corresponding service quality.

Method for avoiding downlink interference between indoor DAS system and small base station

The present invention provides a method for resisting small base station uplink signal interference of an indoor DAS based on antenna selection. The method comprises: step 1: determining an initial access RU, and establishing an uplink; step 2: determining, by the access RU of UEon the basis of the level of interference, whether to switch to another RU, and continuously detecting, by the access RU of UEan SINR value at a set time interval, and comparing the SINR with a preset threshold value &#x3b3;1; wherein if the SINR value is lower than &#x3b3;1, 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 &#x3b3;1 and sets the RU having the greatest receiving signal power as the new access RU of UE

Method for resisting small base station uplink signal interference of indoor DAS system based on antenna selection

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Hangzhou, China

Junrong Yan