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Method for transmitting HARQ feedback information, terminal and base station

A technology that feeds back information and transmits configuration information. It is applied in the directions of sub-channel allocation of transmission paths, transmission systems, and digital transmission systems, and can solve problems such as high signaling overhead.

Active Publication Date: 2018-12-21
BEIJING XIAOMI MOBILE SOFTWARE CO LTD
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, each HARQ feedback information is carried by a scheduling signaling, and the signaling overhead will be relatively large. In addition, for a communication system operating on an unlicensed spectrum, due to the uncertainty of channel occupancy, there may be cases where the base station needs to The HARQ feedback information for multiple uplink data transmissions of a terminal is transmitted on the same transmission unit. In this case, it is not appropriate to use a separate scheduling signaling for each HARQ feedback information.

Method used

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  • Method for transmitting HARQ feedback information, terminal and base station
  • Method for transmitting HARQ feedback information, terminal and base station
  • Method for transmitting HARQ feedback information, terminal and base station

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Embodiment approach

[0212] In a first implementation manner, corresponding to the above transmission characteristic information is: a preset time-frequency position for transmitting the target downlink control signaling.

[0213] Then the above step 13 may include: if the terminal detects its own downlink control information at the preset time-frequency position of the transmission unit, determining that the downlink control information is the target downlink control signaling.

[0214] In the embodiments of the present disclosure, the base station or the system agrees to set the target downlink control signaling at preset time-frequency positions of one or more downlink transmission units. Assuming that the above-mentioned transmission unit is a time slot, it may be agreed that the above-mentioned target downlink control signaling is carried at a preset time-frequency position in the control area of ​​a time slot. In the present disclosure, the above-mentioned transmission unit may be a time-dom...

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Abstract

The present disclosure provides a method, a terminal, and a base station for transmitting HARQ feedback information, where the method includes: acquiring preset downlink hybrid automatic repeat request HARQ configuration information, where the preset downlink HARQ configuration information is used to notify the terminal target The downlink control signaling is used to carry the HARQ feedback information of the at least two uplink data transmissions of any terminal; and the target downlink control information is determined according to the preset downlink HARQ configuration information. And obtaining the target downlink control signaling of the terminal according to the feature information, and parsing the target downlink control signaling to obtain HARQ feedback information of at least twouplink data transmissions. In the present disclosure, the base station may transmit HARQ feedback information for multiple uplink data transmissions of one terminal by using target downlink control signaling, thereby saving system signaling overhead.

Description

technical field [0001] The present disclosure relates to the field of communication technologies, and in particular to a method for transmitting HARQ feedback information, a terminal and a base station. Background technique [0002] In a wireless communication system, due to the time-varying characteristics of the wireless channel and the influence of multipath fading, it will affect the transmission of the signal and lead to the failure of data transmission. In order to solve this problem, the wireless communication system introduces the mechanism of HARQ (Hybrid Automatic Repeat reQuest, hybrid automatic repeat request), through the HARQ feedback information of the receiving end, that is, the ACK signal or NACK signal, to feedback whether the data is received correctly or not; It is determined whether to resend the data packet that has been sent according to the above HARQ feedback information. In a traditional LTE (Long Term Evoluttion, Long Term Evolution) system, there...

Claims

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Application Information

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IPC IPC(8): H04L1/18H04L5/00
CPCH04L1/1812H04L1/1893H04L5/0055H04L1/1864H04L1/1822H04L1/1614H04L1/1861
Inventor 朱亚军
Owner BEIJING XIAOMI MOBILE SOFTWARE CO LTD
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