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A method and system for processing interference between physical downlink control channel pdcch cells

A technology of physical downlink control and processing method, applied in the field of interference processing between physical downlink control channel PDCCH cells, can solve the problems of physical downlink control channel PDCCH quality discount, etc., and achieve the effect of reducing interference and improving performance

Active Publication Date: 2015-09-16
NANJING ZHONGXING XIN SOFTWARE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when there is interference between cells, since the above method cannot reduce or eliminate the interference between cells, the quality of the physical downlink control channel PDCCH will be greatly reduced
Therefore, there is still a lack of a method for coordinating the inter-cell interference of the physical downlink control channel PDCCH in the prior art

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  • A method and system for processing interference between physical downlink control channel pdcch cells
  • A method and system for processing interference between physical downlink control channel pdcch cells
  • A method and system for processing interference between physical downlink control channel pdcch cells

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Embodiment Construction

[0047] The present invention will be further described in detail below through specific embodiments in conjunction with the accompanying drawings.

[0048] Implementation principle:

[0049] Firstly, the principle of realization of the present invention will be described. The present invention is realized based on following two facts:

[0050] First, the actual physical downlink control channel PDCCH is not fully loaded.

[0051]At the system level, researchers have conducted a large number of simulations on the working conditions of the physical downlink control channel PDCCH. Simulation results show that when the Cell Network Temprorary Identifier (C-RNTI) is allocated randomly, the load of the physical downlink control channel PDCCH generally does not reach 90%.

[0052] Since the physical downlink control channel PDCCH is not fully loaded, there must be surplus control channel particle CCEs in the application. The control channel particle CCE allocated to the physical ...

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Abstract

The invention discloses a method and a system for processing the inter-cell interference of a physical downlink control channel (PDCCH). Interference between neighbor cells can be reduced. The method comprises an interference coordination process, wherein the interference coordination process comprises the following steps of: determining the collision rate of control channel elements (CCE) between the neighbor cells; and allocating the CCEs of the PDCCH for each neighbor cell according to the collision rate.

Description

technical field [0001] The invention relates to wireless communication technology, in particular to a method and system for processing interference between cells of a physical downlink control channel PDCCH. Background technique [0002] A physical downlink control channel (Physical Downlink Control Channel, PDCCH) is an important physical channel in 3GPP LTE and LTE-A systems, and is used to carry downlink control information (Downlink Control Information, DCI). The downlink control information is located in the first N OFDM symbols of each downlink subframe, where N≤4. Downlink control information includes the following two parts: [0003] Downlink Transport Format (Downlink Transport Format), downlink shared channel (Downlink Shared Channel, DL-SCH) and paging channel physical resource allocation results of two transport channels, downlink shared channel (DL-SCH) related hybrid automatic repeat request information; [0004] The uplink transport format (Uplink Transport...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W28/16H04W72/04
Inventor 杨扬王勇
Owner NANJING ZHONGXING XIN SOFTWARE CO LTD