A distributed resource allocation method based on laa cellular system

Abstract

The invention discloses a distributed resource allocation method based on an LAA cellular system. The distributed resource allocation method is applied to the LAA cellular system. Under the coverage of a macro base station, a small base station shares an unlicensed frequency band through an LBT mechanism. Meanwhile, a licensed frequency band sub-channel is multiplexed to serve users of the small base station. The distributed resource allocation method comprises the following steps: an adjacent matrix A in a graph theory is adopted to represent an information interaction relationship between small base stations, i.e., the matrix A records a communication relationship between the small base stations in a macro base station range, and the matrix A is in a connected and undirected form; and the macro base station broadcasts parameters of distributed algorithms of other small base stations to the small base station according to the connection matrix A through a backhaul link, and the smallbase station optimizes resource allocation on a licensed frequency band and an unlicensed frequency band by adopting the distributed algorithms so as to obtain the optimal spectrum resource utilization rate. According to the distributed resource allocation method, the throughput of the cellular system is improved while the co-channel interference caused by multiplexing the licensed channel by thesmall base station is ensured to be at a limit value.

Description

technical field [0001] The invention relates to the communication field, in particular to a distributed resource allocation method based on an LAA cellular system. Background technique [0002] With the emergence of new application scenarios, people's demand for the rate of mobile communication is also increasing. Improving spectrum utilization efficiency or introducing new spectrum resources to increase data transmission rate is one of the main contents of next-generation mobile communication technology. Among them, applying higher-efficiency technologies on licensed frequency bands to improve efficiency is the most direct way. The license-free frequency band with abundant frequency band resources has also attracted the attention of industry and academia. At present, using the license-free frequency band as an auxiliary frequency band to increase the speed of mobile users, that is, the LAA (License Assisted Access) technology, is one of the feasible technologies for introd...

AI Technical Summary

Problems solved by technology

However, the serious signaling overhead caused by this cannot be ignored, and it is not suitable for systems that tend to be distributed.

In addition, user data should be managed by the small base station on the upper layer. Acquiring all user information within the system by the macro base station means that the privacy and security of user data cannot be guaranteed.

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