Method, device and system for realizing switching of multiple antenna modes

Abstract

The invention provides a method for realizing the switching of multiple antenna modes, which comprises the steps of: estimating the signal-to-noise ratio (SNR) of each data stream of various antenna modes after the detection; mapping the SNRs with transmission block sizes (TBSs) of the antenna modes; and comparing the TBSs of the antenna modes, and selecting the antenna mode corresponding to the maximum TBS for switching. The invention also provides a device and a system for realizing the switching of the multiple antenna modes. The adoption of the method, the device and the system can realizethe self-adaptive switching of the multiple antenna modes; and at the same time, the method, the device and the system have lower complexity of the realization, can better embody the requirement of QoS according to TBS values mapped by the SNRs after the detection, and have better selection accuracy for the system throughput maximization target which is widely used.

Description

technical field [0001] The present invention relates to the field of mobile communication technologies, and in particular, to a method, device and system for implementing multi-antenna mode switching. Background technique [0002] In many future communication systems, such as HSPA+ (High Speed ​​Packet Access Plus, High Speed ​​Packet Access Evolution), LTE (Long Term Evolution, Long Term Evolution), etc., MIMO (Multiple Input Multiple Output, Multiple Input Multiple Output) technology is introduced , which can further improve the data transmission rate and transmission quality of the system; among them, MIMO technology mainly includes SM (Spatial Multiplexing, spatial multiplexing) technology and TD (Transmit Diversity, transmit diversity) technology; In addition, smart antennas are also obtained in the communication system. For a wide range of applications, the key technology used is BF (Beam-Forming, beam forming) technology. [0003] Among the several multi-antenna tech...

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Problems solved by technology

[0014] However, whether it is the Shannon capacity criterion, the minimum block error rate criterion, the maximum minimum Euclidean distance criterion, or the Demmel condition number criterion, the channel quality used by these criteria is difficult to achieve a relatively low level in the short term in an actual communication system. The calculation complexity is accurate, and the AMC (Adaptive Modulation and Coding, Adaptive Modulation and Coding) technology of the existing system cannot be fully utilized to complete the adaptive switching of the antenna mode

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