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Uplink power control information indication method and device

A power control information and power control technology, which is applied in power management, wireless communication, electrical components, etc., can solve the problem of high system resource overhead and achieve the effect of easy implementation and system cost saving

Active Publication Date: 2014-11-05
CHINA MOBILE COMM GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0024] The embodiment of the present invention provides an uplink power control information indication method and its device, which are used to solve the problem in the prior art that the transmission of uplink power control information has a large overhead on system resources when the uplink power adjustment value is indicated across carriers.

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  • Uplink power control information indication method and device
  • Uplink power control information indication method and device

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Embodiment Construction

[0044] In view of the above-mentioned problems existing in the prior art, the embodiment of the present invention proposes to use the existing DCI format to transmit TPC control information, and indicate the target carrier for the UE to perform power control for the target UE that needs to perform uplink power control through upper layer signaling and TPC control information, so that the corresponding target UE knows which carrier uses which TPC control information to perform uplink power adjustment technical solution.

[0045] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the embodiments described below are only some of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art w...

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Abstract

The invention discloses an uplink power control information indication method and device, which are used for solving the problem of high system resource expenditure of uplink power control information transmission during cross-carrier indication of an uplink direction power adjustment value in the prior art. The method comprises the following steps of: setting a correspondence among DCI (Downlink Control Information) carrying power control information, the power control information carried in the DCI and a target carrier aiming at the power control information of the target carrier carried in the DCI, wherein the target carrier is the carrier for a target terminal to adjust transmitting power in uplink direction; and transmitting the set correspondence to the target terminal. By adopting the method and the device, the system resource consumed by transmitting the uplink power control information is reduced aiming at the situation of cross-carrier indication of the uplink direction power adjustment value while the original DCI format is not changed.

Description

technical field [0001] The present invention relates to the field of wireless communication, in particular to a method for indicating uplink power control information and a device thereof. Background technique [0002] In the LTE (Long Term Evolution, long-term evolution) system, the eNB (base station) carries the UE (User Equipment, user equipment) in the uplink through DCI (Downlink Control Information, downlink control information) format3 / 3A (that is, format 3 or format 3A format). PUCCH (Physical Uplink Control Channel, Physical Uplink Control Channel) or PUSCH (Physical Uplink Share Channel, Physical Uplink Shared Channel) power adjustment value in the direction. DCI format 3 / 3A format can be as figure 1 As shown, in the DCI format 3 format, each TPC command (power control command) is 2 bits; in the DCI format 3A format, each TPC command is 1 bit. The corresponding relationship between the TPC command and the UE is notified by the eNB to the UE through high-layer sig...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W52/14H04W52/36H04W52/04
Inventor 王军徐晓东胡臻平
Owner CHINA MOBILE COMM GRP CO LTD
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