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Self-adaption adjusting method and device of PDCCH (physical downlink control channel)

A technology of self-adaptive adjustment and automatic adjustment, which is applied in signaling distribution, electrical components, power management, etc., and can solve problems such as performance deterioration.

Active Publication Date: 2013-01-09
ZTE CORP
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AI Technical Summary

Problems solved by technology

In some scenarios, it is necessary to comprehensively consider changing the transmit power of the PDCCH and the degree of CCE aggregation, for example: when the performance of the PDCCH of the cell edge user deteriorates

Method used

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  • Self-adaption adjusting method and device of PDCCH (physical downlink control channel)
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  • Self-adaption adjusting method and device of PDCCH (physical downlink control channel)

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Embodiment Construction

[0063] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer and clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0064] Such as figure 1 As shown, it is a flow chart of a preferred embodiment of the PDCCH adaptive adjustment method of the present invention, and this embodiment includes the following steps:

[0065] Step S100: Initialize the system CCE aggregation degree and PDCCH transmission power;

[0066] For the specific implementation process of this step, see figure 2 .

[0067] Step S200: According to the number of UEs currently required to be scheduled by the system num , to automatically adjust the CFI of the PDCCH;

[0068] This step is to adjust t...

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Abstract

The invention relates to a self-adaption adjusting method and a self-adaption adjusting device of a PDCCH (physical downlink control channel). The device comprises the following steps: automatically adjusting the CFI (control format indicator) of the PDCCH according to the subscriber number UEnum and the presupposed CFI threshold value; scheduling the user needing scheduling in respective scheduling windows; automatically adjusting the current PDCCH transmitting power Po and the current CCE (control channel element) polymerization degree according to the BLER (block error ratio) of the PDCCH of the current scheduling user as well as the adjusting strategy of the presupposed power offset and the CCE polymerization degree; and the device comprises a CFI adjusting module, an initialization module, a scheduler module and a self-adaption adjusting module. According to the self-adaption adjusting method and the device of the PDCCH, the whole performance of an LTE (long-term evolution) system is optimized.

Description

technical field [0001] The present invention relates to the field of wireless communication, in particular to a PDCCH (Physical Downlink Control Channel, physical downlink control channel) adaptive adjustment method and device. Background technique [0002] LTE (Long-Term Evolution, long-term evolution), as the evolution of 3G (3rd Generation, third-generation mobile communication technology), improves and enhances 3G air access technology, adopts OFDM (Orthogonal Frequency Division Multiplexing, orthogonal frequency division Multiplexing) and MIMO (Multiple Input Multiple Output, Multiple Input Multiple Output) and other new technologies are used as the basic technical standards for the evolution of its wireless network. The LTE system can provide higher user peak data rate, larger system coverage, and better user QoS (Quality of Service, quality of service) for cell edge users. [0003] The LTE system adopts SCH (Shared Channel, Shared Channel) in both the uplink and down...

Claims

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Application Information

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IPC IPC(8): H04W72/08H04W72/12H04W72/54
CPCH04W52/16H04W72/08H04W72/12H04W52/143H04L5/0053
Inventor 陈继勋王新台
Owner ZTE CORP
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