Data transmission method and apparatus, network side device, and terminal

Abstract

The invention provides a data transmission method and apparatus, a network side device, and a terminal. The method comprises: first downlink data are scheduled for a first type of terminal at a downlink sub frame m of a current frame, wherein a serial number of a first control channel unit of transmission resources occupied by downlink control information corresponding to the first downlink data is a first value; when the downlink sub frame m is a sub frame in a first downlink sub frame set in a first associated downlink sub frame sequence corresponding to an uplink sub frame k, the first value is stored; and when second downlink data are scheduled for a second type of terminal at a downlink sub frame n of the current frame and the downlink sub frame n is a sub frame in a second downlink sub frame set in a second associated downlink sub frame sequence corresponding to the uplink sub frame k, the serial number of the first control channel unit for carrying transmission resources of downlink control information corresponding to the second downlink data is set to be a second value different from the first value, wherein the uplink sub frame k is used for carrying out hybrid automaticrepeat request (HARQ) acknowledgement / negative acknowledgement (ACK / NACK) feedback on the first downlink data and the second downlink data.

Description

Technical field [0001] The present invention relates to the field of communication technology, in particular, to a data transmission method, a data transmission device, a network side device and a terminal. Background technique [0002] With the development of the mobile Internet, a large number of application services that meet various specific functions have emerged. Some of these services have low data delay requirements, such as sending and receiving emails, downloading movies, etc.; but other services have strict requirements on data delay, such as online games, snapping up purchases, grabbing red envelopes, etc., such services usually The delay of user data is required to be as short as possible. Regarding how to obtain a shorter user plane data delay, there are two main ideas in the current LTE (Long Term Evolution) standard discussion: One idea is to use a shorter TTI (Transmission Time Interval), That is, the data sending and receiving interval adopts a shorter TTI tha...

AI Technical Summary

Problems solved by technology

However, since the CCEs occupied by the DCI of each user are uncertain and will vary with the scheduling of users and factors such as subframe numbers, how to set It is still a complex problem to ensure that each UE will not have resource conflicts, and the The design does not propose a relevant and feasible solution, so it cannot effectively solve the above resource conflict problem

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