A method and device for generating contention parameters of an unlicensed channel

Abstract

The present application discloses a method and a device for generating competition parameters of an authorization-free channel. When the LAA base station is not currently competing for a channel and does not need to send a discovery reference signal, the present invention and the competition parameters corresponding to each service to be scheduled and the weights of each service to be scheduled generate the current competition parameters of the LAA base station. It can be seen that the present invention generates competition parameters for the base station to compete for the license-free frequency band by comprehensively considering different competition parameters corresponding to LTE service data to be scheduled on the license-free frequency band. On the one hand, it prevents LTE from always competing for channels with better competition parameters. It is unfair to other access technologies. On the other hand, it also considers the business needs of different priorities to avoid the impact on delay-sensitive services.

Description

technical field [0001] The present application relates to the field of communication technologies, and more specifically, to a method and device for generating contention parameters of an unlicensed channel. Background technique [0002] With the rapid development of mobile smart devices, the rapid emergence of high-definition multimedia streaming services, and the penetration of the Internet into all walks of life, etc., the traffic of mobile data services has exploded, and the existing licensed frequency bands are not enough to provide sufficient network capacity. Meet user needs. Offloading data services to unlicensed frequency bands (such as 5GHz) can relieve network pressure. How to use unlicensed spectrum resources with the assistance of licensed spectrum has become one of the important research topics of 3GPP. [0003] Usually, technologies in licensed frequency bands, such as LTE (Long Term Evolution, long-term evolution), are not suitable for use in unlicensed freq...

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Problems solved by technology

[0005] If the LAA base station adopts the contention parameters corresponding to the service with higher priority, and does not expand the backoff window after receiving NACK, this is beneficial for LAA to seize the license-free frequency band, but it is unfair to other access technologies (such as Wi-Fi) , and will also lead to an increased probability of data collisions

If the LAA base station uses the contention parameters corresponding to low-priority services, and doubles the backoff window as long as there is data retransmission, this will increase the delay for LTE to seize the channel, so that high-priority and time-consuming services that need new transmission Adverse impact on delay-sensitive business

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