Switching method of multipoint-multiuser oriented cooperation transmission

Abstract

The invention discloses a switching method of multipoint-multiuser oriented cooperation transmission, mainly solving the problem that the existing switching technology does not support multiple cooperation transmission points and multiple cooperation users to participate in switching simultaneously. The switching method comprises the steps of: firstly establishing 'cooperation point / users' combined space backup of the users according to the requirements on time-frequency synchronous constraint and average 'F-norm' of channel matrixes, and dynamically monitoring the 'quality' of all combinations in a backup set; and when users need to be switched, judging whether the combinations meeting the requirements on synchronous errors, Doppler residual frequency difference and the average 'F-norm' of the channels exist in the backup set by a baseband processing unit, if so, carrying out cooperation wave-beam soft switching for the users, and if not, carrying out cooperation wave-beam hard switching. The switching method has the advantages that cooperation resources are distributed for switching users in a self-adaptive manner and the computing complexity of a user side is reduced, and is used for cooperation resource switching under the environment of multipoint-multiuser cooperation communication.

Description

technical field [0001] The invention belongs to the field of communication technology, and relates to a cooperative switching technology in joint transmission, which can be used for cooperative resource allocation in a multi-point-multi-user MIMO transmission environment, through dynamic monitoring of "cooperative point / user" combined backup space, adaptive for switching users The set of adjustment partners or the corresponding set of collaboration points. Background technique [0002] In recent years, with the development of mobile communication technology, the communication system's ability to support wireless communication services has been significantly improved. However, users also have higher requirements for high-speed, high-quality multimedia services. Therefore, in the research of next-generation mobile communication technology, higher requirements are put forward for spectrum efficiency, transmission rate, system throughput and cell edge performance. Because it c...

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Problems solved by technology

[0008] The research on the cooperative handover method in the above documents such as document 1) is limited to the research on two relay node models, which has great limitations in practical applications; although document 2) is aimed at the situation of multiple relay nodes , but there is no cooperation between multiple relay nodes. The reason why multiple relay nodes are used is to obtain diversity gain, and it cannot effectively improve the communication quality of cell edge users and improve the system throughput.

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