Multipoint cooperation-based method, device and system for receiving control information

Abstract

The invention discloses a multipoint cooperation-based method, device and system for receiving control information, wherein the multipoint cooperation-based method comprises the steps of that one or more cooperative cells of user equipment receive multiplexing parameters of control information and service data of a locally received physical uplink control channel (PUSCH) sent by a service cell of the user equipment; one or more cooperative cells demultiplex the received service data and the control information according to the multiplexing parameters when recieivng the service data and the control information which are carried on the PUSCH to be transmitted after multiplexed; and one or more cooperative cells transmit the control information obtained by demultiplexing to a service cell. According to the invention, the interactive quantity of data between the service cell and the cooperative cells is reduced, the performance loss caused by independent detection, demodulation and decoding of all cells is avoided, and the demodulation and decoding property of the control information is improved.

Description

technical field [0001] The present invention relates to the communication field, in particular, to a method, device and system for receiving control information based on coordinated multi-point coordination. Background technique [0002] With the improvement of communication requirements, it is necessary to improve the transmission quality and throughput of the cell edge. Coordinate Multi-Point (CoMP for short) transmission technology utilizes the cooperative transmission of multiple cell transmit antennas, which can effectively solve the interference problem at the edge of the cell, thereby improving the capacity and reliability of the wireless link. Therefore, in advanced long-term The CoMP technology is introduced into the evolution (Long Term Evolution-Advance, LTE-A for short) system. In a system using CoMP, the cell that sends downlink control information or receives uplink control information is called a serving cell (Serving Cell); the rest of the coordination point...

AI Technical Summary

Problems solved by technology

Therefore, the above-mentioned CRC-based processing method adopted in the related art is no longer applicable to the control information without CRC check code

Moreover, using the above-mentioned CRC-based processing method, each cell needs to be independently detected, demodulated, and decoded. Compared with multi-cell joint processing, it will inevitably lead to performance loss, and for control information multiplexed with a large amount of business data , if the receiving antenna data of the cooperative cell is directly transmitted to the serving cell, it will take up a lot of data overhead

[0005] Directly transmitting the antenna data received by the cooperative cell directly to the serving cell in related technologies will occupy a large amount of data overhead, and the use of CRC-based processing methods will lead to performance loss. No effective solution has been proposed yet.

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