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Message feedback method and device for carrier aggregation

A technology of carrier aggregation and message feedback, applied in the field of communication, can solve problems such as waste of resources

Active Publication Date: 2021-01-29
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Embodiments of the present invention provide a carrier aggregation message feedback method and device, which are used to solve the problem of resource waste caused by replying ACK or NACK in the prior art

Method used

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  • Message feedback method and device for carrier aggregation
  • Message feedback method and device for carrier aggregation
  • Message feedback method and device for carrier aggregation

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Embodiment Construction

[0125] Base station: also known as radio access network (Radio Access Network, RAN) equipment, is a device that connects terminals to a wireless network, which can be Global System of Mobile communication (GSM) or code division multiple Base Transceiver Station (BTS for short) in Code Division Multiple Access (CDMA for short), or a base station (NodeB, NB for short) in Wideband Code Division Multiple Access (WCDMA for short), or It is an evolved base station (Evolutional Node B, eNB or eNodeB for short) in Long Term Evolution (LTE for short), or a relay station or an access point, or a base station in a future 5G network, etc., and is not limited here.

[0126] Terminal: It can be a wireless terminal or a wired terminal. A wireless terminal can be a device that provides voice and / or other business data connectivity to users, a handheld device with a wireless connection function, or other processing devices connected to a wireless modem. The wireless terminal can communicate wi...

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Abstract

Embodiments of the present invention provide a carrier aggregation message feedback method and device, the method includes: a terminal receives a data packet sent by a base station in the first downlink subframe of the carrier aggregation combination, wherein the carrier aggregation combination includes: the first The carrier and the second carrier; according to the subframe configuration of the carrier aggregation combination and the mapping relationship between the subframe configuration of the carrier aggregation combination and timing, determine the first timing; according to the first timing in the subframe configuration of the carrier aggregation combination Determine the first uplink subframe in the frame; send a feedback message to the base station on the first uplink subframe. It is realized that the first uplink subframe is determined in the entire carrier combination to send the feedback message, and the selectable range is larger, so that a closer subframe is used to send the feedback message, and the feedback efficiency is effectively improved.

Description

technical field [0001] The present invention relates to communication technology, in particular to a message feedback method and device for carrier aggregation. Background technique [0002] Hybrid Automatic Repeat request (HARQ for short) is a technology that combines Forward Error Correction (FEC for short) and Automatic Repeat request (ARQ for short) methods. Among them, FEC enables the receiving end to correct some errors by adding redundant information, thereby reducing the number of retransmissions. For errors that cannot be corrected by FEC, the receiving end will request the sending end to resend data through the ARQ mechanism. In the specific implementation process, the receiving end uses the error detection code to detect whether the received data packet is wrong. If there is no error, the receiving end sends an acknowledgment (Acknowledgment, ACK for short) to the sending end. Send a negative acknowledgment (Negative Acknowledgment, NACK for short), and the sende...

Claims

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Application Information

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IPC IPC(8): H04W72/04
CPCH04W72/04H04L5/0055H04L5/001H04L5/0082H04L5/0092H04L5/1469H04W72/0446H04L27/2666H04L5/14H04L5/0078H04L1/1861H04L1/1893
Inventor 李华栗忠峰肖洁华周国华
Owner HUAWEI TECH CO LTD