Joint time slot and sub-channel scheduling method and device in self-backhaul heterogeneous network

Abstract

Embodiments of the present invention provide a method and device for joint time slot and subchannel scheduling in self-backhaul heterogeneous networks, wherein the method includes: classifying multiple small base stations into multiple small base station sets, and each small base station set Each small base station in the network has the ability to transmit data to each other; obtain the channel information of the self-backhaul heterogeneous network; within the preset resource scheduling time period, divide the self-backhaul heterogeneous network into multiple transmission states according to the time sequence; According to the obtained channel information, determine the number of time slots corresponding to each transmission state; formulate a time slot scheduling plan according to the determined number of time slots, so that the macro base station and the small base stations in the small base station set are allocated according to the time slot scheduling plan subchannel. The embodiment of the present invention can maximize the downlink throughput of the system while satisfying the user's uplink and downlink data rate requirements.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a method and device for joint time slot and sub-channel scheduling in a self-backhaul heterogeneous network. Background technique [0002] With the rapid development of the mobile Internet, people's demand for cellular data grows rapidly. It is conservatively estimated that cellular data traffic will increase by 40% to 70% every year, which means that in the next few decades, the cellular network may need to carry more than 1,000 times. The ever-increasing demand for data services has put forward extremely high requirements on bandwidth and speed. Deploying a heterogeneous network of low-power small base stations within the coverage of macro cells is considered to be a key technology to reduce the burden on macro base stations, reduce latency, improve resource utilization, and enhance user experience. [0003] In a heterogeneous network, with the continuou...

AI Technical Summary

Problems solved by technology

In a wireless self-backhaul heterogeneous network, system interference becomes more complex. These interferences usually include: cross-layer interference between macro base stations and small base stations, same-layer interference between small base stations and small base stations, and uplink and downlink interference. Cross-slot interference between links, if not effectively controlled, will affect the uplink and downlink data transmission rate of the entire wireless self-backhaul heterogeneous network

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