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Method and device for adjusting physical downlink control channel

A technology for physical downlink control and control information, applied in the field of communication, can solve problems that affect the transmission performance of PDCCH channels and cannot fully reflect the quality of PDCCH channels

Active Publication Date: 2014-12-24
POTEVIO INFORMATION TECH
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Problems solved by technology

[0012] Since PDSCH and PDCCH adopt different methods of transmission and power control, the CQI reflects the channel quality of PDSCH and cannot fully reflect the channel quality of PDCCH
Therefore, directly using CQI to estimate the channel quality of PDCCH will have a large estimation deviation, which will affect the transmission performance of PDCCH channel.

Method used

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  • Method and device for adjusting physical downlink control channel

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Embodiment Construction

[0059] In order to make the object, technical solution and advantages of the present invention more clearly, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0060] In the embodiment of the present invention, using N bundled Adjust the aggregation level and transmission power of the PDCCH to improve the transmission performance and transmission efficiency of the PDCCH. The known parameters are used for adjustment, without additional complexity of LTE device implementation, and the accuracy is high.

[0061] According to the relevant agreement, the uplink control information (UCI) is transmitted on the PUSCH channel, and the ACK / NACK mode is set to bundling (bundling), the base station can determine the N used by the UE according to the received signal. bundled parameter.

[0062] Use N bundled It can reflect the loss of DCI. Since the base station itself does not know the situation tha...

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Abstract

The invention relates to a method for adjusting a physical downlink control channel (PDCCH). The method includes the steps that the minimum aggregation stage Taumin and the maximum aggregation stage Taumax of the PDCCH are determined according to the format of DCI of UE; Nbundled parameters used by the UE are determined according to received signals; the state statistics amount deltaPDCCH of the PDCCH is calculated according to the number NDAI of DCIs carried by Nbundled and a base station on the PDCCH; the aggregation stage of the PDCCH is firstly adjusted according to the deltaPDCCH, and when the present aggregation stage Tau is larger than the Taumax or smaller than the Taumin, the transmission power of the PDCCH is then adjusted according to the deltaPDCCH. After the embodiment is applied, the downlink control channel can be adjusted according to existing parameters, and accuracy can be guaranteed.

Description

technical field [0001] The present application relates to the technical field of communications, and more specifically, to a method and device for adjusting a Physical Downlink Control Channel (PDCCH). Background technique [0002] In the LTE system, the PDCCH carries downlink control information (DCI) information. The DCI is used to control functions such as scheduling allocation of uplink and downlink resources and uplink power. Therefore, the transmission performance of the PDCCH channel directly affects the transmission performance of the Physical Downlink Shared Channel (PDSCH) and the Physical Uplink Shared Channel (PUSCH). Ensuring reliable transmission of the PDCCH channel is crucial to the throughput of the entire LTE system. [0003] However, in order to meet a large amount of data communication requirements of users, the PDCCH needs to carry multiple DCIs on limited resources, so the channel utilization of the PDCCH is also very important. It can be seen that im...

Claims

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Application Information

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IPC IPC(8): H04W52/14H04W52/18
Inventor 郭晨
Owner POTEVIO INFORMATION TECH
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