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PUCCH power control method and device

A technology of power control and power control parameters, which is applied in the communication field and can solve problems such as no PUCCH power control scheme

Active Publication Date: 2014-07-16
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the UE supports transmitting PUCCH on different uplink carriers corresponding to different carrier groups, there is no corresponding PUCCH power control scheme

Method used

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  • PUCCH power control method and device
  • PUCCH power control method and device
  • PUCCH power control method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] Power adjustment δ PUCCHIn the M downlink subframes of a carrier group that transmits UCI in the PUCCH on the uplink carrier, each power adjustment amount δ indicated by the PDCCH / EPDCCH received on a designated downlink carrier in the carrier group PUCCH ; That is, when a PUCCH only feeds back the UCI of one carrier group, a carrier group that has a corresponding relationship with the uplink carrier (that is, pre-configured or agreed, the uplink carrier is the corresponding carrier group used to transmit the carrier through the PUCCH δ received in M ​​downlink subframes in UCI uplink carrier) PUCCH When summing, each downlink subframe only accumulates 1 δ indicated by a PDCCH / EPDCCH PUCCH , the PDCCH / EPDCCH is received on a specified downlink carrier in the carrier group.

[0063] Specifically, in the M downlink subframes corresponding to a carrier group that transmits UCI in the PUCCH on the uplink carrier, the TPC command in the PDCCH / EPDCCH received on a designate...

Embodiment 2

[0067] Power adjustment δ PUCCH is: in the M downlink subframes of a carrier group in which UCI is transmitted in the PUCCH on the uplink carrier, each power adjustment amount δ indicated by the PDCCH / EPDCCH received on any downlink carrier in the carrier PUCCH ; That is, when a PUCCH only feeds back the UCI of 1 carrier group, the δ received in M ​​downlink subframes in a carrier group PUCCH When summing, each downlink subframe only accumulates 1 δ indicated by a PDCCH / EPDCCH PUCCH , in each downlink subframe, the above-mentioned PDCCH / EPDCCH received on any downlink carrier in the carrier group can be selected for power accumulation, and δ is obtained in each downlink subframe PUCCH The downlink carriers in the carrier group can be different. If the above-mentioned PDCCH / EPDCCH is received on multiple downlink carriers in the carrier group in one downlink subframe, these PDCCH / EPDCCH should indicate the same δ PUCCH , choose one of them to sum.

[0068] Specifically, in t...

Embodiment 3

[0071] Power adjustment δ PUCCH In the M downlink subframes of a carrier group that transmits UCI in the PUCCH on the uplink carrier, each power adjustment amount δ indicated by the PDCCH / EPDCCH received on all downlink carriers in the carrier group PUCCH ; That is, when a PUCCH only feeds back the UCI of 1 carrier group, the δ received in M ​​downlink subframes in a carrier group PUCCH When summing, multiple δ indicated by multiple PDCCH / EPDCCH may be accumulated in each downlink subframe PUCCH , these PDCCH / EPDCCH are received on all downlink carriers in the subframe in the carrier group, and the δ indicated by these PDCCH / EPDCCH PUCCH Not necessarily the same.

[0072] Specifically, it will correspond to the power corresponding to the TPC command in the PDCCH / EPDCCH received on all downlink carriers of the carrier group in M ​​downlink subframes of one carrier group that transmits UCI in the PUCCH on the uplink carrier Adjustment δ PUCCH Summation (that is, the power ad...

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Abstract

The invention discloses a PUCCH power control method and device, and relates to the communication technology. When UE supports PUCCH transmission on different uplink carriers corresponding to different carrier sets, the uplink carrier where PUCCH transmission is located in a current uplink sub-frame is determined, and as for the uplink carrier where each PUCCH transmission is located, power adjusting cumulant corresponding to a PUCCH transmitted on the uplink carrier of the current uplink sub-frame is determined based on a TPC command received from at least one downlink carrier in at least one carrier set for transmitting UCI in the PUCCH of the current uplink sub-frame on the uplink carrier; according to PUCCH power control parameters and the power adjusting cumulant corresponding to the uplink carrier, transmit power of the PUCCH transmitted in the current uplink sub-frame on the uplink carrier is determined, and accordingly PUCCH power control is achieved.

Description

technical field [0001] The present invention relates to communication technology, in particular to a PUCCH power control method and device. Background technique [0002] In Long Term Evolution (LTE) and previous wireless communication systems, there is only one carrier in a cell, and the maximum bandwidth is 20MHz, such as figure 1 shown. In the Long Term Evolution-Advanced (LTE-A) system, the peak rate of the system is greatly improved compared with LTE, and it is required to reach 1Gbps in the downlink and 500Mbps in the uplink. Using only one carrier with a bandwidth of 20MHz cannot meet the peak rate requirement. Therefore, the LTE-A system introduces carrier aggregation (Carrier Aggregation, CA) technology, that is, multiple continuous or discontinuous carriers under the same eNB (base station) are aggregated together to serve user equipment (User Equipment, UE) at the same time ,Such as figure 2 shown. These aggregated carriers are called component carriers (Comp...

Claims

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Application Information

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IPC IPC(8): H04W52/14
CPCH04W52/325H04W52/34H04W52/146H04W72/0453H04L5/0055H04L5/0048H04L5/14H04W72/21
Inventor 高雪娟林亚男沈祖康
Owner DATANG MOBILE COMM EQUIP CO LTD
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