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Power control information communication method and device for uplink carrier wave

A carrier and power control technology, which is applied in the field of uplink carrier power control information communication methods and devices, and can solve problems such as inability to adjust uplink carrier power control

Active Publication Date: 2011-03-30
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Embodiments of the present invention provide a power control information communication method and device for an uplink carrier, which is used to solve the problem that in a multi-carrier aggregation scenario, when the PDCCH of a downlink carrier needs to carry the control information of multiple uplink carriers, it cannot be used for different uplink carriers. The problem of power control adjustment separately

Method used

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  • Power control information communication method and device for uplink carrier wave
  • Power control information communication method and device for uplink carrier wave
  • Power control information communication method and device for uplink carrier wave

Examples

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no. 2 example

[0152] The sending unit sends multiple TPC-RNTIs and a power control index corresponding to the UE to the UE in the cell through an RRC message, and the sent TPC-RNTI and power control index are as follows:

[0153] TPC-RNTI: TPC-RNTI 1, ... TPC-RNTI n;

[0154] Power control index (TPC-Index): m;

[0155] The number of TPC-RNTIs is the same as the number of DCI information groups occupied by all uplink carriers of the UE. TPC-RNTI 1,...TPC-RNTI n are all 16-bit strings, and the UE uses multiple TPC-RNTIs to descramble the DCI information group to obtain power control information, and the power control index m specifies the position of the UE's power control information in the DCI information group.

[0156] When the power control information of the UE's uplink carrier changes, the update unit updates the DCI information group. In this example, the power control information of the UE1 to UE24 uplink carriers changes, and all 24 UEs have uplink carrier 1 (CC1), and the update ...

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Abstract

The invention relates to the field of communication technologies and provides a power control information communication method and device for an uplink carrier wave, wherein a receiving method comprises the following steps of: receiving a TPC-RNTI (Transmit Power Control-Radio Network Temporary Identifier) and a power control index of the uplink carrier wave and a scrambled DCI (Downlink Control Information) information group; descrambling the DCI information group by utilizing the TPC-RNTI, wherein in the DCI information group, the power control information of all uplink carrier waves of at least one UE (User Equipment) is arranged in the same DCI information group, or the power control information of the uplink carrier waves with the same carrier wave identifier of all UE are arranged in at least one DCI information group; and acquiring the power control information of a plurality of uplink carrier waves from the DCI information group according to the power control index of the uplink carrier wave. The invention has the advantage that the power control on the plurality of uplink carrier waves of the same UE can be realized in a multi-carrier wave polymerization system.

Description

technical field [0001] The present invention relates to the field of communication technologies, in particular to a method and device for communicating power control information of an uplink carrier. Background technique [0002] In the existing Long Time Evolution (LTE) network, the base station sends transmission power control (Transmit Power Control, TPC) information to the user equipment (User Equipment, UE), which is used to adjust the physical uplink control channel (Physical uplink control channel). Uplink Controlchannel, PUCCH) or Physical Uplink Shared Channel (Physical Uplink SharedChannel, PUSCH) transmission power, the power control information can be included in the downlink control information (Downlink Control Information, DCI), depending on the content of the downlink control information, The format of the information is also different, and the DCI format 3 / 3A can be used to carry the above power control information. [0003] LTE is a single-carrier system, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W52/32H04W52/54H04W88/08
Inventor 莫君贤肖晓玲王学寰
Owner HUAWEI TECH CO LTD
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