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Method, system and device for activating SPS under condition of losing PDSSH

A technology of reconfiguration and physical downlink control, applied in the field of communication, can solve the problems of data packet loss, interference, errors, etc., to prevent data transmission errors and interference, and solve the error situation of continuous scheduling process.

Active Publication Date: 2012-10-10
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] The purpose of the present invention is to at least solve one of the above-mentioned technical defects, especially to solve the problem of continuous loss of data packets, errors and interference, and waste of resources in the prior art due to PDCCH loss

Method used

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  • Method, system and device for activating SPS under condition of losing PDSSH
  • Method, system and device for activating SPS under condition of losing PDSSH
  • Method, system and device for activating SPS under condition of losing PDSSH

Examples

Experimental program
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Embodiment 1

[0051] In this embodiment, the first activation of the downlink persistent scheduling is described as an example, as Figure 4 As shown, it is a flow chart of the SPS activation method in the case of PDCCH loss in Embodiment 1 of the present invention. In this embodiment, the UE is in the initial transmission stage, the persistent scheduling service is not activated, and the UE receives the persistent scheduling retransmission from the eNB The corresponding SPS service is activated after the command, and the start time of the SPS service is calculated according to the sending time of the persistent scheduling retransmission command. Include the following steps:

[0052] In step S401, the eNB sends a persistent scheduling activation command to the UE through the PDCCH, and at the same time schedules the first downlink data packet of the persistent scheduling to the UE. Wherein, the control command is 0, which indicates initial transmission scheduling.

[0053] In step S402, t...

Embodiment 2

[0059] In this embodiment, the downlink persistent scheduling reconfiguration is described as an example, as Figure 5As shown, it is a flow chart of the SPS activation method in the case of PDCCH loss in Embodiment 2 of the present invention. In this embodiment, the persistent scheduling service of the UE has been activated, and there is already a persistent scheduling resource configuration in the UE, and at this time due to For reasons such as unreasonable resource allocation, the eNB needs to reconfigure the persistent scheduling of the UE. However, since the UE has not received the persistent scheduling reconfiguration command sent by the eNB due to the loss of the PDCCH, after the UE receives the persistent scheduling retransmission scheduling command, if it thinks that the persistent scheduling retransmission command is obviously abnormal, then the UE considers The persistent scheduling reconfiguration command has been lost. At this time, the UE discards the original pe...

Embodiment 3

[0066] This embodiment is described by taking the initial activation of uplink persistent scheduling as an example, as Image 6 As shown, it is a flow chart of the SPS activation method in the case of PDCCH loss in the third embodiment of the present invention. In this embodiment, the UE is in the initial transmission stage, the persistent scheduling service is not activated, and the UE receives the persistent scheduling retransmission from the eNB The corresponding SPS service is activated after the command, and the start time of the SPS service is calculated according to the sending time of the persistent scheduling retransmission command. Include the following steps:

[0067] In step S601, the eNB sends a persistent scheduling activation command to the UE through the PDCCH, and schedules the UE to send the first uplink data packet of the persistent scheduling. Wherein, the NDI in the control command is 0, which indicates initial transmission scheduling.

[0068] Step S602...

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PUM

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Abstract

The invention provides a method, a system and a device for activating SPS under the condition of losing PDSSH. User equipment (UE) receives a continuous scheduling retransmission command transmitted by an evolution base station (eNB) through the PDSSH, activates corresponding SPS service by the continuous scheduling retransmission command and calculates the starting time of the SPS service according to the transmitting time of the continuous scheduling retransmission command. In the invention, the UE can activate the continuous schedule according to the received retransmission scheduling command to rapidly realize continuous scheduling activation under the condition of losing the PDSSH, thereby solving the problem of mistaken continuous scheduling process caused by losing the PDSSH and preventing data transmission error and interference caused by losing a control command activating the continuous schedule.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a method, system and device for activating SPS (Semi-Persistent Scheduling, Semi-Persistent Scheduling) when PDCCH (Physical Downlink Control Channel, Physical Downlink Control Channel) is lost. Background technique [0002] The SPS mechanism is introduced into the LTE (Long Term Evolution, long term evolution) system. Semi-persistent scheduling can be used for specific services, such as VoIP (Voice over Internet Protocol) services. Its working method is: the initial transmission of specific data packets (such as voice packets of VoIP services) uses the continuous A combination of dynamic scheduling and continuous scheduling. The difference between persistent scheduling and dynamic scheduling is whether to use control command indication, and the control command is carried by PDCCH. [0003] The following is a brief introduction to the two scheduling methods of dy...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W72/08H04W72/12H04L1/16H04L1/18
Inventor 谌丽杨晓东李国庆
Owner DATANG MOBILE COMM EQUIP CO LTD
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