Method and device for transmitting bandwidth information

Abstract

The invention discloses a method and device for transmitting bandwidth information, which are used for transmitting bandwidth information in a CoMP system. The method comprises the steps: a base station determines a transmission bandwidth based on the condition that UE is needed to obtain downlink data or reference signals of the bandwidth information in a plurality of cells; the base station sends the determined indication information of the transmission bandwidth corresponding to the corresponding downlink data or reference signals to the UE; and the base station determines physical resources required to be occupied by the reference signals and sequences of the reference signals according to the transmission bandwidth determined aiming at the reference signals, transmits the sequences of the reference signals on the physical resources, or the base station determines physical resources occupied by the downlink data according to the transmission bandwidth determined aiming at the downlink data, sends indication information of the physical resources to the UE and then transmits the downlink data on the physical resources.

Description

technical field [0001] The invention relates to the communication field, in particular to a method and a device for transmitting bandwidth information. Background technique [0002] In order to improve system throughput or signal transmission quality, a CoMP (Coordinated Multipoint Transmission / Reception, Coordinated Multipoint Transmission) technology is proposed in the industry. A system applying this technology is called a CoMP system. The CoMP technology refers to the cooperation between multiple transmission points separated geographically. Generally, the multiple transmission points are base stations of different cells, or multiple RRHs (Remote Radio Heads, mobile radio units) controlled by the same cell base station. Through cooperative transmission among multiple transmission points, interference between different transmission points can be effectively reduced, and throughput of users, especially cell edge users, can be improved. [0003] Downlink multi-point coor...

AI Technical Summary

Problems solved by technology

[0018] To sum up, in a CoMP system, multiple transmission points (or multiple cells) are involved, and the system bandwidths of multiple cells may be different, so the UE cannot determine which system bandwidth should be used as the transmission bandwidth

Moreover, if the transmission bandwidths used by the base station and the UE are inconsistent, the UE cannot correctly demodulate the downlink data, and the generated reference signal sequence is wrong, etc.

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