Method for sensing multi-channel, cognition radio system, base station as well as user terminal

Abstract

The embodiment of the invention discloses a method for sensing multiple channels, including steps that a base station BS divides customer premises equipment CPE into different physical clusters according to the physical position information of the CPE contained in the system; the physical clusters divided by the BS allocate a plurality of working channels supported by physical clusters to the BS, allocate quiet period QP to the working channels, allocate sensing tasks to the CPE; according to QP allocated by the BS, the CPE executes the sensing tasks allocated by the BS, and sends sensing results to the BS. The embodiment of the invention also discloses a cognitive radio system, the BS and the customer premises equipment CPE. The channel resources and sensing tasks can be allocated equitablely according to the physical position information of the CPE in the system by utilizing the method, the system, the BS and the CPE provided by the embodiment of the invention.

Description

technical field [0001] The present invention relates to cognitive radio (CR) technology, in particular to a method for perceiving multiple channels, a cognitive radio system, a base station and a user terminal. Background technique [0002] Cognitive radio is a solution to the problem that frequency band resources are increasingly tight and the utilization rate of licensed frequency bands is not high. The cognitive radio system can flexibly and efficiently use spectrum holes adaptively according to the actual occupancy of spectrum resources, that is, make full use of idle frequency bands for data transmission without interfering with licensed users. [0003] In order to protect the authorized user (IU), the base station (BS) and user equipment (CPE) in the cognitive radio system must sense the working channel to determine whether the working channel is idle. This perception can be divided into perception inside the working channel and perception outside the working channel....

AI Technical Summary

Problems solved by technology

[0006] The above method does not take into account that multiple CPEs in the system may be in close geographical locations, and there may be multiple CPEs returning the same or similar channel sensing results. In this case, these CPEs are equivalent to repeatedly performing the same sensing task. Therefore, it may cause a waste of system resources

Secondly, because the existing technology does not consider the physical location of the CPE in the system when assigning working channels to the CPE, it cannot effectively use multiple CPEs with close physical locations to return the perception report of the area where it is located to the BS without conflicts, so it cannot be guaranteed to obtain The perceived reliability of the report

[0007] In short, the multi-channel sensing methods in the prior art do not reasonably allocate channel resources for CPEs and rationally configure sensing tasks based on the physical location information of CPEs in the system. Therefore, when the physical locations of CPEs are concentrated, system resources may waste, resulting in the BS not being able to efficiently and reliably obtain the perception reports of authorized users in its own coverage area

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