Disturbance control starting method based on registration in long term evolution (LTE) heterogeneous network

Abstract

The invention provides a disturbance control starting method based on registration in a long term evolution (LTE) heterogeneous network. Whether non-closed subscriber group (CSG) user equipment (UE) is disturbed by a CSG home evolved node B (HeNB) or not is evaluated through utilizing adjacent cell information measured by the non-CSG UE; if being indeed disturbed by the CSG HeNB, the non-CSG UE registers with the CSG HeNB disturbing the non-CSG UE, so as to enable the CSG HeNB to realize that certain non-CSG UE needs protection; and then necessary disturbance coordination measures are adopted to reduce the disturbance to the non-CSG UE.

Description

technical field [0001] The invention belongs to the technical field of communication, and is particularly suitable for an interference coordination starting mechanism of a long-term evolution LTE heterogeneous network. Background technique [0002] In the LTE heterogeneous network, in order to improve the coverage and capacity of the network, further improve the quality of service and spectrum utilization efficiency of the wireless network, and meet various complex rate requirements and coverage requirements, various forms of low-power network nodes such as micro base stations Pico, home base station HeNB, and relay node Relay Nodes will flood the network on a large scale, coexisting and integrating with traditional macro base stations. HeNB is deployed by users without planning, and only serves home users in closed subscriber group CSG mode. Due to the arbitrary deployment of low-power network nodes such as HeNB, the complexity of planning, and the diversity and variabilit...

AI Technical Summary

Problems solved by technology

[0003] Since the HeNB working in closed subscriber group mode only provides wireless communication services for closed subscriber group user CSG UE, non-closed subscriber group user non-CSG UE is a macro user served by the macro station and cannot access the HeNB, so the HeNB will Cause strong downlink interference to non-CSG UEs under its coverage

The huge difference in technical characteristics such as downlink transmission power between HeNB and macro base station makes it difficult for existing interference coordination methods to be applied in heterogeneous networks

If in order to reduce the interference of non-CSG UEs under its coverage, HeNB simply takes interference control measures such as reducing power or performing ABS (Almost Blank Subframe, blank frame) configuration, which will lead to poor communication quality and system throughput of the micro cell. decline

And for non-CSG UEs in the idle state IDLE, the HeNB in ​​the micro cell cannot know whether there are IDLE non-CSG UEs subject to downlink interference that need to be protected, so a mechanism is needed to protect these interfered non-CSG UEs

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