A closed-loop power control method and device for a physical uplink control channel

A closed-loop power control, user equipment technology, applied in the field of communication, can solve the problem of no TPC value, etc., to achieve the effect of improving performance

Active Publication Date: 2018-11-13
ALCATEL LUCENT SHANGHAI BELL CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] It can be seen that in the current technology, since the user equipment with carrier aggregation function only transmits the PUCCH on the primary cell, and only the PUCCH of the primary cell specifies the closed-loop power control; thus there is no corresponding TPC value for the PUCCH of the secondary cell

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  • A closed-loop power control method and device for a physical uplink control channel
  • A closed-loop power control method and device for a physical uplink control channel
  • A closed-loop power control method and device for a physical uplink control channel

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Embodiment Construction

[0027] For ease of understanding, various abbreviations appearing in the specification and / or in the drawings are defined as follows:

[0028] LTE: Long Term Evolution, long-term evolution

[0029] TDD: Time Division Duplexing, time division duplex

[0030] FDD: Frequency Division Duplexing, Frequency Division Duplex

[0031] PUCCH: Physical Uplink Control Channel, uplink physical control channel

[0032] PDCCH: Physical Downlink Control Channel, downlink physical control channel

[0033] CC: Component Carrier, component carrier

[0034] PCC: Primary Component Carrier, main component carrier

[0035] SCC: Secondary Component Carrier, auxiliary component carrier

[0036] UE: User Equipment, user equipment

[0037] TDM: Time Division Multiplexing, time division multiplexing

[0038] TPC: Transmit Power Control, transmission power control

[0039] DCI: Downlink Control Information, downlink control information

[0040] DAI: Downlink Assignment Index, Downlink Assignment ...

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Abstract

The invention aims at providing a method and device for providing closed-loop power control information for PUCCH. The method is that when a main component carrier and one or a plurality of secondary component carriers are combined to service a user device together, the PUCCH of a main cell includes the HARQ information of the main component carrier and the HARQ information of the one or the plurality of secondary component carriers, and the PUCCH of a secondary cell includes the HARO information of the one or the plurality of secondary component carriers, a base station device can determine TCP information for indicating the secondary cell to bear closed-loop control of the uplink secondary component carrier of PUCCH to the PUCCH corresponding to the secondary cell containing the HARQ information of the one or the plurality of secondary component carriers according to different DCI format information in the downward secondary component carriers of the secondary cell. Compared with the prior art, the method and the device have the advantages that the corresponding TPC value is provided to the secondary cell containing the HARQ information of the secondary component carriers, so that the PUCCH closed-loop power control for the plurality of component carriers is achieved, and the power control performance is improved.

Description

technical field [0001] The present invention relates to the communication field, in particular to a technology for closed-loop power control of PUCCH on multiple component carriers in TDD-FDD carrier aggregation. Background technique [0002] Carrier aggregation is a core function in the enhanced version of the LTE system. By using several carriers or cells in parallel, the uplink and downlink rates of the UE are greatly improved. The cell aggregated by the UE with the carrier aggregation function is divided into a primary cell and a secondary cell. The carrier used by the primary cell is called a primary component carrier (Primary Component Carrier, PCC for short), and the carrier used by the secondary cell is called a secondary component carrier (PCC). Secondary Component Carrier, referred to as SCC). Specifically, the downlink carrier used by the primary cell is called the downlink primary component carrier (Downlink Primary Component Carrier, DL PCC for short), the upli...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W52/08H04W52/32H04L5/00
CPCH04W52/08H04W52/325
Inventor 孙芳蕾刘瑾杨涛
Owner ALCATEL LUCENT SHANGHAI BELL CO LTD
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