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Hybrid automatic repeat request information feedback method based on carrier aggregation and system

A technology of hybrid automatic retransmission and carrier aggregation, applied in transmission systems, digital transmission systems, wireless communications, etc., can solve problems such as deterioration, and achieve the effect of improving reliability and flexible self-adaptation

Active Publication Date: 2017-03-22
POTEVIO INFORMATION TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The problem caused by this aggregation feedback method will be further exacerbated as more carriers need to be aggregated

Method used

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  • Hybrid automatic repeat request information feedback method based on carrier aggregation and system
  • Hybrid automatic repeat request information feedback method based on carrier aggregation and system
  • Hybrid automatic repeat request information feedback method based on carrier aggregation and system

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Embodiment Construction

[0039] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments. The following examples are intended to illustrate the present invention, but not to limit the scope of the present invention.

[0040] figure 2 It is a flowchart of a carrier aggregation-based hybrid automatic repeat request information feedback method according to a preferred embodiment of the present invention, and the method includes the following steps:

[0041] S1. The base station sets an index value for each scheduled carrier and transmits it to the terminal, preferably through DCI; the multiple index values ​​of each scheduled carrier first follow the order of the index value of the serving cell of the scheduled carrier from small to large , and then form a column of continuously increasing integers according to the index value of the scheduled carrier serving cell in ascending order;

[0042] S2. The base station sets an index value ...

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Abstract

The invention provides a hybrid automatic repeat request information feedback method based on carrier aggregation and a system. According to the method and the system, a base station sets index values for dispatching carriers and dispatched carriers; index value information and the total number of carriers transmitted to a terminal; the terminal carries out judgment to determine whether downlink information corresponding to a certain carrier is lost or not according to received information and sends first predetermined information, namely NACK information, to the carrier of which downlink information is lost; and the first predetermined information or second predetermined information, namely NACK or ACK information, is fed back to the carriers of which index values are not lost according to the accuracy of the data packets transmitted on the carriers. According to the method and the system, the information needing to be fed back is determined according to the carriers actually called by the terminal, the flexible self-adaptation of the feedback information and the actually dispatched carriers is realized, and the reliability of bearing useful information by a PUCCH / PUSCH channel is improved.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, and more specifically relates to a hybrid automatic repeat request information feedback method and system based on carrier aggregation. Background technique [0002] In order to meet the requirements of single-user peak rate and system capacity improvement, one of the most direct methods is to increase the system transmission bandwidth. Therefore, the LTE (Long Term Evolution, long-term evolution)-Advanced system introduces a technology for increasing transmission bandwidth, that is, CA (Carrier Aggregation, carrier aggregation). The CA technology can aggregate 2 to 5 LTE component carriers (Component Carriers, CCs) together to achieve a maximum transmission bandwidth of 100 MHz, effectively improving the uplink and downlink transmission rates. The terminal determines, according to its own capability, how many carriers it can use simultaneously for uplink / downlink transmission. I...

Claims

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Application Information

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IPC IPC(8): H04L1/18H04W72/04H04W72/12H04W72/14
CPCH04L1/1858H04L1/1864H04W72/0453H04W72/20H04W72/23
Inventor 鲁智池连刚
Owner POTEVIO INFORMATION TECH
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