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User device and data transmission method thereof

A data transmission method and user equipment technology, applied in the field of user equipment and its data transmission, can solve the problems of high system overhead and inability to flexibly apply to user terminals, etc., and achieve the effects of reducing overhead, saving resources, and controlling system overhead

Active Publication Date: 2017-05-31
BEIJING SPREADTRUM HI TECH COMM TECH CO LTD
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  • Abstract
  • Description
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Problems solved by technology

However, there are many problems in the technology used to shorten the TTI in the prior art, for example, it cannot be flexibly applied to various user terminals (User Equipment, UE), the system overhead is too large, etc.

Method used

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  • User device and data transmission method thereof
  • User device and data transmission method thereof
  • User device and data transmission method thereof

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Embodiment Construction

[0038] As mentioned in the background, the technology for shortening the TTI in the prior art has problems such as being unable to be flexibly applied to various user terminals (UEs) and having too much system overhead.

[0039] In order to solve the above problems, in the technical solution of the embodiment of the present invention, based on the shortened TTI configuration information sent by the base station, the user equipment blindly detects the preset physical downlink control channel with each shortened TTI as the cycle, so as to obtain the corresponding main Downlink control information, and determine the corresponding secondary downlink control information based on the acquired primary downlink control information, so as to schedule to the corresponding shortened TTI, and perform data transmission with the base station, so that the user equipment can blindly detect the initial channel Switching between the state and the main downlink control information scheduling stat...

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Abstract

The present invention provides a user device and a data transmission method thereof. The method comprises: obtaining configuration information of a shortened TTI (Transmission Time Interval) sent by a base station; taking the shortened TTI as a period to perform blind detection of a preset physical downlink control channel until obtaining the main downlink control information corresponding to itself; determining the corresponding auxiliary downlink control information based on the obtained main downlink control information, wherein the auxiliary downlink control information comprises control information corresponding to the shortened TTI data transmission; and performing data transmission with the base station under the shortened TTI of the auxiliary downlink control information dispatching. According to the scheme, the flexibility suitable for the shortened TTI is improved, and the resource is saved.

Description

technical field [0001] The present invention relates to wireless communication technology, in particular to a user equipment and a data transmission method thereof. Background technique [0002] Transmission Time Interval (Transmission Time Interval, TTI) is an important parameter in a wireless communication system such as a Long Term Evolution (LTE, Long Term Evolution) system, which determines a specific scheduling method of time-frequency resources. A shorter TTI will benefit a variety of wireless communication services, but it also brings problems such as high system overhead. [0003] For example, among the current wireless Internet services, services based on Transmission Control Protocol (TCP) occupy the mainstream, many of which are services with high data rate and low lifetime, such as web browsing, short video playback, etc. . One of the characteristics of the TCP protocol is that the initial size of the window is small, and the window can only be expanded to the...

Claims

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Application Information

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IPC IPC(8): H04W72/12H04L1/00
CPCH04L1/0038H04W72/1273H04W72/23H04L5/0053H04W72/1263
Inventor 刘洋
Owner BEIJING SPREADTRUM HI TECH COMM TECH CO LTD
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