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Hybrid Automatic Repeat Request Information Feedback Method and System Based on Carrier Aggregation

A hybrid automatic retransmission and carrier aggregation technology, 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 adaptation.

Active Publication Date: 2019-11-12
POTEVIO INFORMATION TECH CO LTD
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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 and System Based on Carrier Aggregation
  • Hybrid Automatic Repeat Request Information Feedback Method and System Based on Carrier Aggregation
  • Hybrid Automatic Repeat Request Information Feedback Method and System Based on Carrier Aggregation

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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 used to illustrate the present invention, but should not be used 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 i...

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Abstract

The present invention provides a hybrid automatic repeat request information feedback method and system based on carrier aggregation. In the present invention, the base station sets index values ​​for the scheduling carrier and the scheduled carrier, and transmits the index value information and the total number of carriers to the terminal. The terminal Judgment is made according to the received information to determine whether the downlink information corresponding to a certain carrier is lost, and the first predetermined information, that is, NACK information is sent to the carrier for which the downlink information is lost; The accuracy of the data packet feeds back the first predetermined information or the second predetermined information, that is, NACK or ACK information. The invention can determine the information to be fed back according to the carrier actually invoked by the terminal, realizes the flexible self-adaptation between the feedback information and the actual scheduled carrier, and improves the reliability of the useful information carried by the PUCCH / PUSCH channel.

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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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/18H04W72/04H04W72/12H04W72/14
CPCH04L1/1858H04L1/1864H04W72/0453H04W72/20H04W72/23
Inventor 鲁智池连刚
Owner POTEVIO INFORMATION TECH CO LTD
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