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Data transmission method, terminal equipment and network equipment

A technology of terminal equipment and network equipment, applied in the field of data transmission, can solve the problems of waste of resources, high control signaling overhead, incompatibility with 1msTTI, etc., and achieve the effect of taking into account compatibility and meeting the requirements of delay

Active Publication Date: 2020-11-03
GUANGDONG OPPO MOBILE TELECOMM CORP LTD
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

The advantage of short TTI is to shorten the transmission delay, but the corresponding cost is high control signaling overhead and low spectrum efficiency
For a terminal with multiple types of services at the same time, if a unified TTI is determined based on the service requiring the minimum delay, resources will be wasted
In addition, on the carrier that supports short TTI transmission, the compatibility with the existing LTE system cannot be guaranteed, that is, it cannot be compatible with 1ms TTI

Method used

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  • Data transmission method, terminal equipment and network equipment
  • Data transmission method, terminal equipment and network equipment
  • Data transmission method, terminal equipment and network equipment

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Embodiment Construction

[0055] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0056] figure 1 It is a schematic diagram of an application scenario of the present invention. exist figure 1 , the terminal device 20 can communicate with the base station 10. and, figure 1 The arrows shown in may represent uplink / downlink transmissions over the cellular link between the terminal device 20 and the base station 10 .

[0057] It should be understood that the technical solutions of the embodiments of the present invention can be appl...

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Abstract

A data transmission method is provided, including: a terminal device receives a first DCI and a second DCI, wherein the first DCI is used to schedule the terminal device to receive a first PDSCH transmitted using a first TTI in a target carrier, the first The second DCI is used to schedule the terminal device to receive the second PDSCH transmitted using the second TTI in the target carrier, and the first TTI is smaller than the second TTI, the first PDSCH and the second PDSCH at least partially overlapping on time resources; determining a priority relationship between the first DCI and the second DCI; according to the priority relationship, receiving the first PDSCH or the second PDSCH in the target carrier . The method provided by the embodiment of the present invention can dynamically support multiple TTIs for data transmission in the same carrier, and the terminal device can determine the priority of the transmission channel in a carrier. This method can not only meet the delay requirement, but also take into account Compatibility with existing systems.

Description

technical field [0001] Embodiments of the present invention relate to the communication field, and more specifically, relate to a method for data transmission, a terminal device, and a network device. Background technique [0002] In future communication technologies, with the continuous expansion of air interface technology and applications, reducing latency will become one of the key performance indicators. For example, the end-to-end delay requirement for real-time remote computing for mobile terminals of mobile terminals is less than 10 ms, and the delay requirement for Traffic efficiency and safety is 5 ms, while the existing long-term evolution technology (Long The duration of the transmission time interval (Transmission Time Interval, TTI) of Term Evolution, LTE) is 1 ms. [0003] Since the data processing and decoding delays are mainly related to the length of the TTI, one of the key technologies to reduce the transmission delay is to shorten the TTI. Currently, LT...

Claims

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Application Information

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IPC IPC(8): H04L1/00
CPCH04L5/0053H04W72/0446H04L5/0078H04W72/56H04W72/23H04L5/003H04L5/0064H04L5/0094H04L5/0055H04L5/0092H04W72/1273H04L1/00H04W74/0833
Inventor 冯斌
Owner GUANGDONG OPPO MOBILE TELECOMM CORP LTD
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