Uplink and downlink decoupling cascade method based on non-orthogonal multi-access

Abstract

The invention provides an uplink and downlink decoupling cascade method based on non-orthogonal multi-access. The method, in order to solve the problems that the load between the uplink and downlink of a macro base station and a small base station is unbalanced and the uplink transmission rate is limited due to a traditional heterogeneous cellular network coupling link user access mechanism, researches a new user air interface access scheme for a 5G / B5G network by using cross-layer dual connection and uplink and downlink decoupling cascade with a non-orthogonal multi-access technology. According to the scheme, the uplink and downlink of the user equipment are allowed to access a plurality of base stations for cascading by adopting different cascading modes, and the performance of a 5G / B5Gnetwork is improved by utilizing the dual-connection characteristic of non-orthogonal multi-access nature and using a cross-layer dual-connection technology to research a high spectrum-energy efficiency wireless transmission scheme.

Description

technical field [0001] The invention belongs to the field of wireless communication, and relates to a non-orthogonal multiple access-based cross-layer dual connection uplink and downlink decoupling cascading method. Background technique [0002] With the advent of the mobile Internet era, data traffic is growing explosively, and at the same time, the user's demand for network experience is also improved. The emergence of heterogeneous networks is to cope with the surge in demand for smart devices and next-generation wireless network data services. It is recognized by the world and industry as one of the key technologies of 5G in the future. This new type of 5G technology will reduce the distance between mobile users and base stations by deploying low-power, short-distance and low-cost small base stations on macro cells, thereby reducing wireless transmission loss and improving user service quality . However, this new type of network architecture is still immature, and ther...

AI Technical Summary

Problems solved by technology

[0005] The present invention provides a non-orthogonal multi-access based cross-layer dual connection uplink and downlink decoupling cascading method in a three-layer heterogeneous network environment to solve the traditional heterogeneous cellular network coupling link The user access mechanism leads to load imbalance between the uplink and downlink of the macro base station and the small base station, the limitation of the uplink transmission rate, and the scarcity of spectrum, which greatly improves the utilization of wireless resources, reduces the delay of system handover, and improves User and System Performance

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