An Intelligent Beam Switching Algorithm

Abstract

The invention belongs to the technical field of radio frequency wireless communication and particularly relates to an intelligent wave beam switching algorithm. The algorithm includes the steps of by combining with a multibeam intelligent antenna model, making statistics of the number of the labels to be identified in each sector of the scanning range based on the Chebyshev inequality and determining the scanning start position and the beam dwell time; and based on the adaptive power control algorithm, adaptively determining the sub-area size divided by each sub-sector according to the actual distribution condition of the labels; and determining the scanning interval (namely, the respective scanning time corresponding to the different power in the same one scanning area) of the corresponding power by the number of the labels to be identified in each sub-area. The algorithm is characterized in that through the combination with the concepts of intelligent wave beam switching and adaptive power control, the algorithm can be applied to an RFID system to improve the maximum identification distance, coverage area, anticollision, positioning, anti-interference and other performances of a reader in the prior art, and is new study direction.

Description

technical field [0001] The invention belongs to the technical field of radio frequency wireless communication, and relates to an intelligent beam switching algorithm. Background technique [0002] In recent years, the Internet of Things has been widely used in all aspects of society as an emerging industry, and Radio Frequency Identification (RFID, Radio Frequency Identification), as a key technology of the Internet of Things, has attracted more and more attention. Radio frequency identification technology is a wireless communication technology that conducts two-way communication through non-contact radio frequency signals, automatically identifies target objects and obtains relevant information data. It uses the spatial coupling of radio frequency signals (alternating magnetic field or electromagnetic field) The transmitted information achieves the purpose of identifying the object. As an important part of the RFID system, the reader is a key factor in realizing wireless d...

AI Technical Summary

Problems solved by technology

However, in the RFID system, the reader usually uses a low-gain fixed beam formed by a single antenna, which will cause a large positioning error for the identification target, and the collision of multiple reflected signals of the tags in the identification area makes it difficult for the reader to achieve a 100% identification rate.

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