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Method for data transmission in semi-persistent scheduling mode and user equipment

A semi-static scheduling, user equipment technology, applied in digital transmission systems, transmission systems, error prevention/detection using return channels, etc., can solve the problems of collision between new data and retransmitted data, reduce system overhead, etc., to reduce computing power , the effect of reducing system overhead and improving processing performance

Active Publication Date: 2012-02-15
ZTE CORP
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  • Description
  • Claims
  • Application Information

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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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  • Method for data transmission in semi-persistent scheduling mode and user equipment
  • Method for data transmission in semi-persistent scheduling mode and user equipment
  • Method for data transmission in semi-persistent scheduling mode and user equipment

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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 the activation signaling of the 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 scrambl...

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Abstract

The invention discloses a method for data transmission in a semi-persistent scheduling mode. The method comprises that: when data received by user equipment (UE) and scrambled by a semi-persistent scheduling cell radio network temporary identifier (SPS-C-RNTI) is active signaling transmitted in the semi-persistent mode, and data retransmission is performed by adopting a non-adaptive hybrid automatic repeat request (HARQ), the UE sets a cycle timer for the transmission of new data; and the UE transmits the new data by conventional time-frequency resources after the time-out of the cycle timer, and transmits retransmitted data at the arrival of the next sub-frame after the transmission of the new data. The invention also provides the user equipment. By the technical scheme provided by the invention, system overhead is decreased, and the problems of collisions between the new data and the retransmitted data in the semi-persistent scheduling mode are 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, an 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 (Voice over 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 interval ...

Claims

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Application Information

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