Joint time slot and sub-channel scheduling method and device in auto-return heterogeneous network

Abstract

The embodiment of the invention provides a joint time slot and sub-channel scheduling method and a device in an auto-return heterogeneous network, wherein the method comprises the following steps: a plurality of small base stations are classified into a plurality of small base station sets, and each small base station in each small base station set has the ability to transmit data mutually; channel information of the self-return heterogeneous network is obtained; in the preset resource scheduling time period, a plurality of transmission states are sequentially divided for the self-return heterogeneous network according to the time sequence; the number of time slots corresponding to each transmission state is determined according to the acquired channel information; a time slot scheduling plan is made according to the determined number of time slots so that the small base stations in the macro base station and the small base station set allocate sub-channels respectively according to the time slot scheduling plan. The embodiment of the invention can meet the data rate requirements of the user for uplink and downlink, and at the same time, maximizes the system downlink throughput.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a joint time slot and sub-channel scheduling method and device in a self-backhaul heterogeneous network. Background technique [0002] With the rapid development of mobile Internet, people's demand for cellular data is growing 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 1000 times The ever-increasing demand for data services puts forward extremely high requirements for 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 increasing numbe...

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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