Downlink control information (DCI) scheduling control method and DCI scheduling control device

A technology for scheduling control and control information, applied in the field of communication, can solve the problems of lost scheduling opportunities, poor power saving effect, waste of bandwidth, etc., to avoid wasting effective scheduling, reducing invalid scheduling, and avoiding wasting resources such as bandwidth.

Active Publication Date: 2017-10-24
NANJING ZHONGXING SOFTWARE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention provides a downlink control information DCI scheduling control method and device, the purpose of which is to solve the problem of poor power saving effect, invalid scheduling waste of bandwidth and Issues where it is possible to lose some scheduling opportunities

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  • Downlink control information (DCI) scheduling control method and DCI scheduling control device
  • Downlink control information (DCI) scheduling control method and DCI scheduling control device
  • Downlink control information (DCI) scheduling control method and DCI scheduling control device

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no. 1 example

[0046] see figure 1 , the first embodiment of the present invention provides a DCI scheduling control method for downlink control information, which is applied to a base station using discontinuous reception DRX, and the method includes:

[0047] Step 101, receiving user terminal HARQ feedback.

[0048] Wherein, the HARQ feedback of the user terminal is the feedback for the DCI scheduling delivered by the base station; the HARQ feedback can be DCI loss or non-loss.

[0049] Step 102, when the first HARQ feedback indicates that the DCI is in the lost state, monitor whether there is a first DCI schedule sent to the user terminal after the first acknowledgment time, wherein the first acknowledgment time is the last time before the reception time of the first HARQ feedback The deadline for a user terminal to be in an active state.

[0050] Specifically, the first HARQ feedback is the latest feedback currently received; the first DCI scheduling is the new DCI scheduling after the...

no. 2 example

[0072] The second embodiment uses a specific embodiment to introduce the downlink control information DCI scheduling control method provided by the present invention. see Figure 2-Figure 4 , are schematic diagrams of scenarios of the interaction process between the base station and the user terminal in the specific embodiment of the second embodiment of the present invention, wherein the period of the persistence timer is set to 5 milliseconds (the duration timer starts counting from 0), and the inactive timing The period of the timer is 4 milliseconds (the inactive timer starts counting from the +1 moment when the scheduling occurs), and there is only uplink scheduling;

[0073] Define the UE possible activation deadline and the first confirmation time; wherein, the UE possible activation deadline is the larger one of the end time of the persistence timer and the end time of the inactivation timer, indicating that the user terminal may be activated before this time State: t...

no. 3 example

[0086] see Figure 5 , the third embodiment of the present invention provides a downlink control information DCI scheduling control device, which is applied to a base station using discontinuous reception DRX, and the device includes:

[0087] The receiving module 501 is configured to receive user terminal hybrid automatic repeat request HARQ feedback;

[0088]The monitoring module 502 is configured to monitor whether there is a first DCI schedule sent to the user terminal after the first confirmation time when the first HARQ feedback indicates that the DCI is in the lost state, where the first confirmation time is the receiving time of the first HARQ feedback The previous deadline for the last time the user terminal was in an active state;

[0089] The stop module 503 is configured to determine that there is an abnormality in the interaction with the user terminal when the first DCI schedule exists, and stop sending the DCI schedule to the user terminal.

[0090] Preferably...

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Abstract

The invention provides a downlink control information (DCI) scheduling control method and a DCI scheduling control device. The method is applied to a base station adopting discontinuous reception (DRX). The method comprises steps: a hybrid automatic repeat request (HARQ) feedback of user equipment is received; when a first HARQ feedback is that the DCI is in a loss state, whether first DCI scheduling transmitted to the user equipment after first confirmation time exists is monitored, wherein the first confirmation time is the cutoff time when the user equipment is in an active state for the last time before the first HARQ feedback receiving time; and when the first DCI scheduling exists, abnormity is determined to exist in the interaction with the user equipment, sending of the DCI scheduling to the user equipment is stopped. The problems that in the existing mode of solving state synchronization between the BS with the DRX and the UE, power saving effects become poor, invalid scheduling wastes bandwidth, and certain scheduling changes are lost possibly can be solved.

Description

technical field [0001] The present invention relates to the field of communications, in particular to a method and device for scheduling and controlling downlink control information DCI. Background technique [0002] In the Long Term Evolution (LTE, Long Term Evolution) system of the general mobile communication technology, in order to enable the user terminal (UE) to save power as much as possible, the LTE applies a Discontinuous Reception (DRX) method. DRX allows the UE to be in an active state or a sleep state, and the UE wakes up periodically to receive and operate the Physical Downlink Control Channel (PDCCH), without having to monitor the PDCCH constantly, thereby achieving the purpose of power saving. [0003] However, the state synchronization between the DRX base station (BS) and the UE is a problem. For example, if the UE does not detect the downlink control information (DCI) issued by the base station, and there is an inactive timer (inactive timer) on the BS side...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W72/12H04W76/04
CPCH04W72/21H04W72/23Y02D30/70
Inventor 李小海于剑唐静武建超
Owner NANJING ZHONGXING SOFTWARE
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