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: 2012-08-29
HUAWEI TECH CO LTD
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  • 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

The embodiment of the invention provides a communication method for a carrier aggregation system and relates to the technical field of communication. The method is invented for effectively ensuring the normal communication of a base station and user equipment. The communication method comprises the following steps that: physical downlink sharing channel (PDSCH) information issued by a base station through a sub frame n of an auxiliary cell is received; when the sub frame n of a main cell is a downlink sub frame, acknowledgement / negative acknowledgement (ACK / NACK) feedback of the issued PDSCH information is carried out on a sub frame m or a sub frame p of the main cell, wherein m is a sub frame index of the sub frame of the ACK / NACK for feeding back the PDSCH of the sub frame n of the main cell in the main cell according to the ACK / NACK timing relationship corresponding to the sub frame n of the main cell, and p is a sub frame index of the sub frame of the ACK / NACK for feeding back the PDSCH of the sub frame n of the auxiliary cell in the auxiliary cell according to the ACK / NACK timing relationship corresponding to the sub frame n of the auxiliary cell. The method provided by the invention can be used in the 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 Applications(China)
IPC IPC(8): H04L5/00H04L1/18
CPCH04W72/0446H04W72/20H04W72/23H04L1/1854H04L5/0055H04L1/1887H04L5/14
Inventor 李博官磊吕永霞
Owner HUAWEI TECH CO LTD
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