Hybrid automatic repeat request (HARQ) progress transmission method and device on unauthorized frequency band, base station and terminal

Abstract

The invention provides a hybrid automatic repeat request (HARQ) progress transmission method and a HARQ progress transmission device on an unauthorized frequency band, a base station and a terminal. The HARQ progress transmission method comprises the steps of counting the number of times that each HARQ progress misses retransmission due to the fact that a data transmitting end executes a channel detection mechanism on the unauthorized frequency band, and/or counting a duration experienced by each HARQ progress from establishment to the time before the data transmitting end receives an ACK message; determining transmission priorities of each HARQ progress in retransmission according to the number of times that each HARQ progress misses retransmission and/or the duration experienced by each HARQ progress from establishment to the time before the data transmitting end receives the ACK message; and when every time it detects that the unauthorized frequency band can be occupied, distributing transmission resources to the HARQ progresses according to the transmission priorities of the HARQ progresses in retransmission. According to the method, the problem that data cannot be transmitted as the HARQ progress always cannot occupy the channel can be avoided, an average delay of the HARQ progresses is reduced, and increasing of the handling capacity of a system is facilitated.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular, to a HARQ process transmission method on an unlicensed frequency band, a HARQ process transmission device on an unlicensed frequency band, a base station and a terminal. Background technique [0002] With the rapid increase of communication traffic, the 3GPP authorized spectrum is increasingly insufficient to provide higher network capacity. In order to further improve the utilization of spectrum resources, 3GPP proposes the concept of LAA (LTE Assisted Access, LTE Assisted Access), which is used to use unlicensed spectrum with the help of LTE (Long Term Evolution, Long Term Evolution) licensed spectrum. In order to make the LTE system coexist harmoniously with different systems such as Wi-Fi on the unlicensed frequency band, 3GPP proposed the LBT (Listen Before Talk, Listen Before Talk) mechanism to ensure that the unlicensed frequency band The fairness of using sp...

AI Technical Summary

Problems solved by technology

However, subframe No. 7 of radio frame 1 and subframe No. 3 of radio frame 2 do not occupy channel resources, so uplink data cannot be sent

[0018] If the above situation always occurs in a certain HARQ process, the delay of the HARQ process will be very large, the fairness of resource allocation of each HARQ process cannot be guaranteed, and data loss may occur, seriously affecting user experience and throughput Quantity and performance

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