A multi-operator LTE-U dual-band resource allocation method based on lyapunov

Abstract

The invention relates to a Lyapunov-based multi-operator LTE-U dual-band resource configuration method, which belongs to the technical field of wireless communication. In order to ensure the system performance of the WiFi network, the present invention adopts a listen-before-send mechanism to detect WiFi signals. At the same time, in order to coordinate base stations of various operators, the present invention proposes a bidding auction mechanism to ensure that base stations of multiple operators can effectively access unlicensed frequency bands. Based on the full-duplex transmission mode, the same resource block can be used for uplink and downlink at the same time, but will be affected by self-interference at the same time. Based on the half-duplex transmission mode, the same resource block will not be affected by self-interference, but it can only be used for a single uplink or downlink link. The invention adopts the Lyapunov optimization method based on the accumulated number of data packets in the user cache area to ensure the stability of the queue, and at the same time maximize the system gain of the unlicensed frequency band to improve the total benefit of the entire network.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, and relates to a Lyapunov-based multi-operator LTE-U dual-band resource configuration method. Background technique [0002] With the unprecedented growth of wireless data, wireless operators urgently need more frequency band resources to provide higher data rates and better quality of service (Quality of Service, QoS). Facing the upcoming challenge of 1000 times the amount of mobile data, extending the Long Term Evolution (LTE) technology to the unlicensed frequency band proposed by the 3GPP organization is an effective solution, that is, LTE-U. However, the development of LTE-U faces two problems: [0003] (1) Unlicensed frequency bands have been occupied by many existing wireless networks, such as WiFi networks. Therefore, the most basic problem is to ensure the harmonious coexistence of LTE-U and existing unlicensed users, that is, avoid serious performance interference to exi...

AI Technical Summary

Problems solved by technology

[0004] (2) Multiple LTE-Us access unlicensed frequency bands, and the interference they receive is unpredictable, which seriously damages the performance of LTE-U users

However, due to the imperfect self-interference cancellation, residual self-interference still exists, resulting in a small SINR of the full-duplex FD transmission link, thereby impairing the performance of the full-duplex FD mode

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