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Power-control parameter acquirement method and power control method

An acquisition method and parameter technology, applied in the field of communication, can solve problems such as system performance degradation, PUSCH transmission power coding performance mismatch, etc., to achieve the effect of ensuring transmission performance and overall performance

Inactive Publication Date: 2009-04-08
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] The present invention aims to provide a method for acquiring power control parameters and a method for using it to perform power control, so as to solve the problem of system performance degradation caused by the mismatch between the transmission power of PUSCH and the coding performance of uplink control information on PUSCH

Method used

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  • Power-control parameter acquirement method and power control method
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  • Power-control parameter acquirement method and power control method

Examples

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Embodiment 1

[0040] At the current moment, the uplink shared channel data and the uplink control information data are simultaneously transmitted in the physical uplink shared channel from the UE to the NodeB. The uplink subframe at this moment is denoted as i, and subframe i not only bears uplink shared channel data, but also bears one or several kinds of uplink control information among ACK / NACK, CQI / PMI, and RI. Transport format offset parameter Δ TF (i) It can be obtained from the transport block size obtained from the physical downlink control channel at the initial transmission moment and the bandwidth for transmitting the physical uplink shared channel, that is, through the transport block size TBS on subframe t0 and the initial transmission of the uplink The transmission block size TBS obtained in the physical downlink control channel corresponding to the shared channel data and the bandwidth M of the physical uplink shared channel for transmission PUSCH To obtain the transmission ...

Embodiment 2

[0046] At the current moment, only uplink shared channel data is transmitted in the physical uplink shared channel from the UE to the NodeB, and there is no uplink control information data. The uplink subframe at this moment is denoted as i. Subframe i only carries uplink shared channel data, and does not carry one or more uplink control information among ACK / NACK, CQI / PMI, and RI. Use subframe i The transmission block size TBS and the bandwidth M of the transmission physical uplink shared channel on subframe i PUSCH To obtain the transmission format offset parameter Δ on subframe i TF (i). When K S = 1.25, Δ TF ( i ) = 10 lo g 10 ( 2 MPR · K S - 1 ...

Embodiment 3

[0051] At the current moment, only uplink control information data is transmitted in the physical uplink shared channel from the UE to the NodeB, and there is no uplink shared channel data. The uplink subframe at this moment is denoted as i, and the subframe i only carries one or more uplink control instruction information among ACK / NACK, CQI / PMI, and RI, and does not carry uplink shared channel data. Use the transport block size TBS on subframe i and the bandwidth M of the physical uplink shared channel on subframe i PUSCH To obtain the transmission format offset parameter Δ on subframe i TF (i). When K S = 1.25, Δ TF ( i ) = 10 lo g 10 ( 2 MPR · K S - 1 ...

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Abstract

The invention discloses a method for obtaining power control parameters. The method comprises: when the data types carried by a physical uplink sharing channel on a sub-frame i is judged to simultaneously contain uplink sharing channel data and uplink control information by a terminal, the terminal obtains the transmission format excursion parameter DeltaTF(i) of the sub-frame according to the transmission block size TBS obtained in a corresponding physical downlink control channel when primarily transmitting the uplink sharing channel data and a bandwidth MPUSCH for transmitting the uplink sharing channel; wherein, i is a nonnegative integer. The technical scheme of the invention solves the problem of system performance descending caused by the mismatching between the emission power of the PUSCH and the uplink control information coding performance on the PUSCH and ensures the transmission performance of the uplink control information, thereby ensuring the integral performance of the system.

Description

technical field [0001] The present invention relates to the communication field, in particular, to a method for acquiring power control parameters and a method for using the same to perform power control. Background technique [0002] Power control in interference control technology is one of the key technologies to ensure reliable and effective data transmission in the wireless environment, and is an important indicator to measure the quality of mobile communication services. [0003] Uplink power control is an operation process that combines open-loop power control and closed-loop power control, and the closed-loop power control is set around the open-loop power control. The main reason for the combination of open-loop power control and closed-loop power control is that the combination of the two can reduce system overhead compared with pure closed-loop power control, and at the same time reduce the sensitivity of pure closed-loop power control to channel changes. [0004...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/005H04L1/18H04L1/16
Inventor 戴博许进郝鹏徐俊左志松
Owner ZTE CORP
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