Multi-operator LTE-U dual-band resource configuration method based on Lyapunov

Abstract

The invention relates to a multi-operator LTE-U dual-band resource configuration method based on Lyapunov, and belongs to the technical field of wireless communication. To guarantee the system performance of a WiFi network, the invention adopts a mechanism of listening first and transmitting later to detect a WiFi signal. Meanwhile to coordinate each operator base station, the invention provides acompetitive auction mechanism to ensure that the multiple operator base stations effectively access an unauthorized band. Based on a full duplex transmission mode, a same resource block can be simultaneously applied to an uplink and a downlink, and meanwhile can be affected by self-interference. Based on a half-duplex transmission mode, the same resource block is prevented from being affected byself-interference, but can be only applied to the single uplink or downlink. According to the method provided by the invention, based on the quantity of data packets accumulated in a cache region of auser, a Lyapunov optimization method is used for ensuring the stability of a data packet queue, meanwhile the system gain of the unauthorized band is maximally used, and the total benefit of the whole network is enhanced.

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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