A semi-persistent scheduling method and user equipment

A semi-static scheduling and dynamic change technology, applied in the field of communication, which can solve the problems of SPS transmission impact, unsolved problems, etc.

Active Publication Date: 2019-03-08
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the existence of flexible subframes, when the configuration of TDD uplink and downlink ratios is changed, subframes originally used for uplink SPS may become downlink, or subframes originally used for downlink SPS may become uplink. At this time, SPS transmission will be affected. influences
The prior art does not address the method of implementing and running the SPS mechanism when some subframes in the TDD system can be used as flexible subframes

Method used

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  • A semi-persistent scheduling method and user equipment
  • A semi-persistent scheduling method and user equipment
  • A semi-persistent scheduling method and user equipment

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Embodiment Construction

[0091] In the following description, for purposes of illustration rather than limitation, specific details, such as specific system architectures, interfaces, and techniques, are set forth in order to provide a thorough understanding of the present application. It will be apparent, however, to one skilled in the art that the present application may be practiced in other embodiments without these specific details. In other instances, detailed descriptions of well-known devices, circuits, and methods are omitted so as not to obscure the description of the present application with unnecessary detail.

[0092] The time domain in the system is composed of a radio frame (Radio Frame), and a radio frame is passed through a system frame number (System Frame Number, SFN) n f For identification, SFN is to carry out round-robin numbering on radio frames by period. For example, using 10 bits to mark SFN, then n f =0, 1, 2...1023, that is, the radio frames are numbered from 0 to 1023 and...

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Abstract

The invention belongs to the technical field of communication, and provides a semi-static scheduling method and user equipment. Among them, the semi-persistent scheduling method includes: determining a fixed subframe set in the TDD frame, wherein the uplink and downlink attributes of each subframe in the fixed subframe set remain unchanged when the uplink and downlink ratio configuration of the TDD frame changes dynamically; The SPS transmission is performed on subframes in which the uplink and downlink attributes in the subframe set are the same as the transmission direction of the SPS transmission. In this way, under the condition that the TDD uplink and downlink ratios are dynamically configured for the UE, the SPS can be transmitted normally without being affected by the flexible subframe.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a semi-persistent scheduling method and user equipment. Background technique [0002] In the LTE system, two frame structures are supported - frequency division duplex (FDD) and time division duplex (TDD). In the TDD frame structure, such as figure 1 As shown, the 10ms wireless frame is divided into two half-frames with a length of 5ms, and each half-frame is composed of 5 subframes with a length of 1ms, including 4 normal subframes and 1 special subframe. The normal subframe It consists of two 0.5ms, and the special subframe consists of 3 special time slots (uplink pilot time slot UpPTS, guard interval GP and downlink pilot time slot DwPTS, where DwPTS is used for sending downlink signals and UpPTS is used for uplink signals Sending, GP is the guard interval of TDD uplink and downlink conversion). [0003] SPS (Semi-Persistent Scheduling) is a semi-persistent s...

Claims

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Application Information

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IPC IPC(8): H04W16/10
CPCH04W16/10H04W72/0446H04L5/14
Inventor 权威吕永霞杨晓东张戬
Owner HUAWEI TECH CO LTD
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