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Acknowledgement/negative acknowledgement (ACK/NACK) transmission method and equipment for carrier aggregation system

A technology of carrier aggregation and transmission method, which is applied in the field of communication, and can solve problems such as no clear ACK/NAK bundling transmission method

Active Publication Date: 2011-11-09
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] At present, there is no clear transmission method of ACK / NAK bundling in the carrier aggregation scenario

Method used

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  • Acknowledgement/negative acknowledgement (ACK/NACK) transmission method and equipment for carrier aggregation system
  • Acknowledgement/negative acknowledgement (ACK/NACK) transmission method and equipment for carrier aggregation system
  • Acknowledgement/negative acknowledgement (ACK/NACK) transmission method and equipment for carrier aggregation system

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Embodiment Construction

[0040] The following will clearly and completely describe the technical solution of the present invention in conjunction with the accompanying drawings of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0041] In the LTE-A system, multiple carriers can be aggregated to jointly transmit data for a UE, and the transmission block TB on each carrier corresponds to an ACK / NAK feedback, and the UE receives multiple TBs on multiple carriers , it is necessary to transmit multiple ACK / NAK bits in the uplink. For UEs with limited uplink power, ACK / NAK bundling can be used to reduce the number of actual ACK / NAK feedback bits of the UE. In the embodiment of the present invention, the transmis...

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Abstract

The invention discloses an acknowledgement / negative acknowledgement (ACK / NACK) transmission method for a carrier aggregation system. The method comprises that: user equipment receives control signaling in at least one sub-frame of a primary component carrier (PCC) and at least one secondary component carrier (SCC) by a physical downlink control channel (PDCCH); ACK / NACK corresponding to the PDCCH, requiring ACK / NACK feedback, of the at least one sub-frame is fed back in an identical uplink sub-frame; the user equipment generates bundled ACK / NACK information according to the received carrier type of the PDCCH; and the user equipment feeds the generated bundled ACK / NACK information back in the uplink sub-frame. In the embodiment of the invention, the bundled ACK / NACK information is generated according to the received carrier type of the PDCCH, and is fed back in the uplink sub-frame in a carrier aggregation occasion, thereby giving an ACK / NACK bundling transmission way in the carrier aggregation occasion.

Description

technical field [0001] The present invention relates to the field of communication technologies, and in particular to an ACK / NAK transmission method and equipment in a carrier aggregation system. Background technique [0002] In the 3GPP (3rd Generation Partnership Project, third generation partnership project) Rel-8TDD (Time Division Duplexing, time division duplex) system, support ACK (AcknowledgeCharacter, positive confirmation) / NAK (Negative Acknowledgment, negative confirmation) bundling (bundling ) transmission. [0003] A UE (User Equipment, user equipment) receives control information sent by a base station through a PDCCH (Physical DL Control Channel, physical control channel). One PDCCH can carry one piece of control information. The control information includes downlink scheduling information (DL Grant), uplink scheduling information (UL Grant), and other control information. [0004] After receiving some PDCCH, the user equipment needs to feed back ACK / NAK in ...

Claims

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Application Information

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IPC IPC(8): H04L1/16H04W28/04
Inventor 沈祖康林亚男潘学明高雪娟
Owner DATANG MOBILE COMM EQUIP CO LTD