Inter-cell cell reference signal interference processing method, system and device

A cell reference signal and processing method technology, applied in wireless communication, electrical components and other directions, can solve the problems of CRS location conflict, CRS interference, system downlink performance degradation, etc., and achieve the effect of improving downlink performance and avoiding CRS interference
CN104080174BActive Publication Date: 2017-08-08CHINA MOBILE COMM GRP CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHINA MOBILE COMM GRP CO LTD
Publication Date
2017-08-08

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Abstract

The present invention discloses a CRS interference processing method, system and device between cells: for any two adjacent cells in the network where CRS positions conflict, when the DwPTS time slot in the special subframe used by one of the cells is configured as a long DwPTS Configure the DwPTS time slot in the special subframe used by another cell as a short DwPTS time slot; determine that the CRS position conflict with the adjacent cell occurs and the terminals of the cell subordinate to the long DwPTS time slot are configured to meet the requirements For the terminal, the compliance includes: being located at the edge of the cell to which it belongs and adjacent to a neighboring cell where the CRS position conflicts with the cell to which it belongs; scheduling the determined terminal to the DwPTS time slot in the special subframe used by the cell to which it belongs for data transmission. Applying the scheme of the present invention can improve the downlink performance of the system.
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Description

technical field

[0001] The present invention relates to wireless technology, in particular to a method, system and device for processing cell reference signal interference between cells. Background technique

[0002] In a Time Division Long Term Evolution (TD-LTE, Time Division Long Term Evolution) system, a Cell-specific Reference Signal (CRS, Cell-specific Reference Signal) is an important reference signal for a terminal to perform channel estimation and data demodulation.

[0003] For the currently commonly used two-antenna port system, under the normal cyclic prefix (CP, Cyclic Prefix) configuration, the CRS is located in the 1st, 5th, 8th, and 12th orthogonals of each 1ms subframe in the time domain On frequency division multiplexing (OFDM, Orthogonal Frequency Division Multiplexing) symbols (the number of OFDM symbols starts from 1), in the frequency domain, every 3 subcarriers appear once, that is, there are 4 CRS positions in every 12 subcarriers.

[0004] For the t...

Claims

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