A wireless communication method and device

Abstract

The invention discloses a wireless communication method and a wireless communication device, to be specific, relates to a method and a device of determining channel availability of an unlicensed carrier in a base station of an LTE communication system. The wireless communication method comprises steps that the base station is used to determine a value of a first parameter, and the first parameter is related to the average interference power; the base station is used to determine a value of a second parameter, and the second parameter is related to the occupation / idle rate of the unlicensed carrier; and the base station is used to determine the channel availability of the unlicensed carrier according to the first parameter and the second parameter.

Description

technical field [0001] The present invention relates to the technical field of communication, in particular to the technical field of wireless communication. Background technique [0002] In the field of wireless communication, generally speaking, the traditional deployment method is that the system works in a licensed frequency band (licensed band), that is, the entire spectrum resource is reserved for the system to use. Typically, the LTE communication system works using licensed frequency bands. [0003] However, with the further growth of wireless services, the requirements for the capacity and frequency band of the wireless communication system are also increased. In this case, the licensed frequency band resources of the LTE system appear to be relatively insufficient. Therefore, one of the recent research hotspots in the LTE field is how to use unlicensed frequency band resources to offload high-incidence data services. This kind of scheme is called LTE (LTE in Unl...

AI Technical Summary

Problems solved by technology

Since the unlicensed carrier can be shared by multiple communication systems, the following situation may occur. During the energy detection period of a certain LTE system, the unlicensed carrier is just used by other communication systems. The normal communication service transmission is carried out on the network, so the transmission power will be relatively large, and this part of the transmission power will be fully recognized as interference power by the LTE system, so a relatively high average interference power measurement result will be obtained; however, the actual The situation may be that the service on the unlicensed carrier only lasted for a short time and then stopped. The carrier is idle and available, but due to the influence of high instantaneous power, the measured average power increases. The LTE system The carrier will not be selected

[0009] In another case, the measured average interference power measurement result is lower than the threshold value, and the LTE system selects the carrier. However, the actual situation is that there is a certain amount of interference in most of the time or in most subframes, and the That is to say, in most cases, the carrier has been occupied by other systems, but due to the low transmit power of the service, the average interference power can still be lower than the threshold value, thus causing the LTE system to wrongly select the carrier, while the actual The carrier is very busy

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