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A data transmission method and user equipment in a semi-persistent scheduling mode

A semi-static scheduling and user equipment technology, applied in digital transmission systems, transmission systems, error prevention/detection using return channels, etc., can solve problems such as reducing system overhead, collisions between new data and retransmitted data, and reduce system traffic. Effects of overhead, reduced computation, improved processing performance

Active Publication Date: 2017-06-09
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of this, the main purpose of the present invention is to provide a data transmission method and user equipment in a semi-static scheduling mode, which reduces system overhead and solves the problem of collision between new data and retransmitted data in a semi-static scheduling mode

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  • A data transmission method and user equipment in a semi-persistent scheduling mode
  • A data transmission method and user equipment in a semi-persistent scheduling mode

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Embodiment Construction

[0037] The basic idea of ​​the present invention is: when the SPS-C-RNTI scrambled data received by the UE is an activation signaling for semi-persistent scheduling transmission, and non-adaptive HARQ is used for data retransmission, the UE sets the new data transmission A periodic timer: after the periodic timer expires, the UE sends new data on the original time-frequency resource, and sends retransmission data when the next subframe arrives after the new data is sent.

[0038] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0039] The present invention provides a data transmission method in a semi-static scheduling mode, figure 1 It is a schematic flow diagram of the method of data transmission in the semi-static scheduling mode of the present invention, as shown in figure 1 As shown, the method includes the following steps:

[0040] Step 101, the UE receives the SPS-C-RNTI scrambled d...

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Abstract

Disclosed in the invention is a method for data transmission in a semi-persistent scheduling mode. The method comprises that: when semi-persistent scheduling cell radio network temporary identity (SPS-C-RNTI) scrambled data received by a user equipment (UE) is a semi-persistent scheduling transmission active signaling, and data retransmission is performed by adopting non-adaptive hybrid automatic repeat request (HARQ), the UE sets a cycle timer for new data transmission; the UE transmits new data in original time-frequency resources when the cycle timer expires, and transmits the retransmitted data at the arrival of a next sub-frame after the new data is transmitted. The invention also provides a user equipment. By the technical scheme of the invention, the system overhead is reduced, and a problem of the new data and the retransmitted data collision in the semi-persistent scheduling mode is solved at the same time.

Description

technical field [0001] The invention relates to the field of wireless digital communication, in particular to a data transmission method and user equipment in a semi-static scheduling mode. Background technique [0002] Different from the traditional 3G system, a very important feature of the Long Term Evolution (LTE, Long Term Evolution) system is that it cancels all circuit domain services, and proposes the concept of an all-IP network, using VoIP (Voiceover Internet Protocol) Packet data transmission technology to carry voice services. In the LTE system, the dedicated channel is canceled, and the scheduling resource allocation method of the shared channel is adopted, so that the wireless resources can be effectively utilized to the maximum extent. [0003] Rich service types and high-speed data rates put forward high requirements for the packet data transmission technology of the LTE system. For VoIP data packets whose size is relatively fixed and the arrival time interv...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/16H04L1/18H04L1/00
CPCH04L1/1887H04L1/1812H04L1/1825
Inventor 刘巅
Owner ZTE CORP