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Power configuration method for physical mixing retransmission indicating channel

A technology of retransmission indication and physical mixing, applied in power management, wireless communication, electrical components, etc., can solve problems such as affecting PHICH transmission, affecting scheduling transmission, affecting PDCCH power allocation of other downlink channels, etc., to achieve dynamic configuration and optimization. Effects of utilization of power resources

Active Publication Date: 2012-03-28
北京万海云科技有限公司
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Problems solved by technology

This not only affects the transmission of PHICH, but also further affects the transmission of PUSCH; correspondingly, since the physical downlink control channel PDCCH and other downlink channels share the total downlink power that can be configured by the system, it will also affect the power allocation of other downlink channels, especially PDCCH, further Affects scheduled transmissions on the Physical Downlink Shared Channel (PDSCH) or PUSCH

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  • Power configuration method for physical mixing retransmission indicating channel
  • Power configuration method for physical mixing retransmission indicating channel
  • Power configuration method for physical mixing retransmission indicating channel

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Embodiment Construction

[0012] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0013] The core idea of ​​the present invention is: considering that the protection of PHICH is very strong, it can be considered as error-free transmission, that is, the transmission of ACK / NACK information is correct; the adjustment of the power gain factor of PHICH that sends ACK / NACK information like this only needs to be based on For changes in channel quality, it is enough to adapt to changes in the channel, that is, according to the CRC check result of this PUSCH data transmission, the channel quality information CQI fed back last time, the signal-to-noise ratio based on the cell-specific reference signal CRS measurement, and the preset The target signal-to-noise ratio when transmitting ACK information on the PHICH and the energy va...

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Abstract

The invention provides a power configuration method for a physical mixing retransmission indicating channel. The power of a PHICH (Physical Hybrid-ARQ Indicator Channel) is regulated according to the verification result of CRC (Cyclic Redundancy Check) results of PUSCH (Physical Uplink Shared Channel) data transmission, a signal-to-noise ratio corresponding to the latest feed backed channel quality information (CQI) and based on cell special reference signal (CRS) measurement, a preset target signal-to-noise ratio during transmitting ACK information in the PHICH, as well as the energy value of each source element of the CRS, so that the power configuration of the present PHICH can be consonant with the quality of the PHICH, the dynamic configuration of the PHICH can be effectively realized, and the use of the PHICH power source is optimized.

Description

technical field [0001] The present invention relates to resource allocation technology in mobile communication, in particular to a physical hybrid retransmission indication channel (PHICH) power allocation method. Background technique [0002] In the LTE system, when performing physical uplink shared channel (PUSCH) transmission, it is necessary to indicate ACK / NACK information of PUSCH transmission through PHICH. The current PHICH transmission process mainly includes the following steps: first, the base station (eNB) decodes the information on the PUSCH, and generates ACK or NACK information according to the CRC check result; then, the eNB calculates the ACK / NACK transmission occupied by the resource location of the PUSCH The position of the PHICH group and the sequence position within the group; finally, multiple PHICH sequences within the group are code-division multiplexed (CDM) to transmit the PHICH. [0003] It can be seen from the above process that the multi-user CD...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W52/24H04W52/48
Inventor 白杰张连波
Owner 北京万海云科技有限公司
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