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Communication method and device for carrier aggregation system

A communication method and carrier aggregation technology, applied in the field of communication, can solve problems such as the inability of communication to proceed normally, and achieve the effect of ensuring normal communication.

Active Publication Date: 2015-02-25
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in a TDD CA system where multiple carriers have different uplink and downlink configurations, since the uplink and downlink configurations of PCell and SCell are different, the communication between the base station and the UE through the Scell ​​may not be performed normally according to the timing relationship corresponding to the Scell.

Method used

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  • Communication method and device for carrier aggregation system
  • Communication method and device for carrier aggregation system
  • Communication method and device for carrier aggregation system

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Embodiment Construction

[0105] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention.

[0106] It should be clear that 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.

[0107] It should be pointed out that the embodiment of the present invention is applicable to a time division duplex TDD (Time Division Duplexing) system, or a carrier aggregation system of TDD and frequency division duplex FDD (Frequency Division Duplexing). In addition, the cell (Cell) in the embodiment of the present invention may also be replaced by the concept of a component carrier, so that a PCell may also be called a PCC, and an ...

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Abstract

Embodiments of the present invention provide a communication method for a carrier aggregation system, relating to the field of communication technologies, and being invented for the purpose of effectively ensuring normal communication between a base station and a user equipment. The communication method includes: receiving physical downlink share channel PDSCH information sent by a base station through a subframe n of a secondary cell; and if a subframe n of a primary cell is a downlink subframe: feeding back an ACK / NACK of the sent PDSCH information on a subframe m or a subframe p of the primary cell, where the m, determined according to the ACK / NACK timing relationship to which the subframe n of the primary cell corresponds, is a subframe index of a subframe that feeds back the ACK / NACK of the PDSCH of the subframe n of the primary cell in the primary cell, and the p, determined according to the ACK / NACK timing relationship to which the subframe n of the secondary cell corresponds, is a subframe index of a subframe that feeds back the ACK / NACK of the PDSCH of the subframe n of the secondary cell in the secondary cell. The present invention may be applied to a carrier aggregation system.

Description

technical field [0001] The present invention relates to the field of communication technologies, and in particular to a communication method and device for a carrier aggregation system. Background technique [0002] In a Long Term Evolution (Long Term Evolution) Release 8 (Release 8, R8) system. A base station and a user equipment (User Equipment, UE) perform communication and data transmission on a carrier. The base station schedules the UE through the physical downlink control channel PDCCH (Physical Downlink Control Channel). ) or scheduling information such as time-frequency resource allocation of a physical uplink shared channel PUSCH (Physical Uplink Shared Channel). After receiving and decoding the PDCCH, the UE will receive the downlink data PDSCH or send the uplink data PUSCH according to the scheduling information carried by it. After that, the UE will feed back the uplink ACK / NACK (AN) to the downlink data, wherein the feedback ACK means to confirm reception or ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L5/00H04L1/18
CPCH04W72/0406H04L1/1854H04W72/1289H04W72/0446H04W72/20H04W72/23H04L5/0055H04L1/1887H04L5/14
Inventor 李博官磊吕永霞
Owner HUAWEI TECH CO LTD
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