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Multi-sub-frame scheduling method and system

A multi-subframe scheduling and single-subframe scheduling technology, applied in transmission systems, digital transmission systems, and error prevention/detection using return channels, which can solve problems such as network capacity becoming a bottleneck.

Active Publication Date: 2015-07-01
CHINA TELECOM CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The surge in mobile data traffic will gradually cause network capacity to become a bottleneck and pose a huge challenge to operators

Method used

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  • Multi-sub-frame scheduling method and system

Examples

Experimental program
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Embodiment 1

[0076] Figure 5 What is shown is a schematic diagram of an embodiment of HARQ process number allocation in the present invention.

[0077] Assume that the total number of processes allocated to multi-subframe scheduling is 4, and the initial process number is 1.

[0078] At time t+1, multi-subframe scheduling exists, and indicates that the process number of the current subframe is 2. Since the data channel and the control signaling of the multi-subframe scheduling are in the same subframe, the process number is 2.

[0079] At time t+4, the data channel and the control signaling of multi-subframe scheduling are not in the same subframe, and its process number is determined by the process number indicated by the last control channel PDCCH, the subframe sequence number of the data channel PDSCH, and the PDCCH. The difference between the subframe sequence numbers and the initial process number assigned to multi-subframe scheduling can be calculated together, and the process numb...

Embodiment 2

[0081] Figure 6 It is a schematic diagram of another embodiment of HARQ process number allocation in the present invention.

[0082] This embodiment is a case where a single subframe and multiple subframes coexist, that is, the user receives a control signaling indicating a single subframe scheduling at time t+3.

[0083] Assume that the total number of processes allocated to multi-subframe scheduling is 4, and the initial process number is 5.

[0084] At time t+1, there is control signaling for multi-subframe scheduling and indicates that the current subframe process number is 7; at time t+3, there is control signaling for single-subframe scheduling and indicating that the HARQ process number is 3, so at t The process number of the data channel at time +3 is 3.

[0085] At time t+4, the data channel and the control signaling of multi-subframe scheduling are not in the same subframe, and the process number of the data channel can be calculated as 5+(7-5+(t+4)-(t+1 ))%4=6. ...

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Abstract

The invention discloses a multi-sub-frame scheduling method and system. The method comprises the following steps: a terminal monitors a control signal of a physical layer control channel; if a control channel belonging to the terminal is found, the terminal judges whether or not the control signal is a multi-sub-frame scheduling control signal, and reads an action scope in the multi-sub-frame scheduling control signal if the control signal is a multi-sub-frame scheduling control signal; and if the control channel belonging to the terminal is not found, the terminal judges whether or not the control signal is in the action scope of the multi-sub-frame scheduling, and calculates a process number if the control signal is in the action scope of the multi-sub-frame scheduling. Through adoption of the multi-sub-frame scheduling method and system, at least one problem in multi-sub-frame scheduling is solved; the physical layer signaling overhead is saved; and the resource utilization ratio is increased.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a multi-subframe scheduling method and system in LTE micro cell deployment. Background technique [0002] in: [0003] HARQ: Hybrid Automatic Repeat request, hybrid automatic repeat request; [0004] PDSCH: PhysicalDownlinkSharedCHannel, physical downlink shared channel, used to carry data from the transmission channel DSCH; [0005] PDCCH: Physical Downlink Control Channel, physical downlink control channel, carrying downlink control information. [0006] The current LTE system includes single-subframe scheduling and semi-persistent scheduling (Semi-persistent scheduling). In the single subframe scheduling process, for the same subframe, each downlink data channel PDSCH has a corresponding physical layer control channel PDCCH indication, and the PDCCH will indicate the HARQ process number of the data channel PDSCH. The signaling overhead of the physica...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W72/12H04L1/18
CPCH04W72/0446H04L1/1812H04W72/20
Inventor 朱剑驰佘小明陈鹏毕奇
Owner CHINA TELECOM CORP LTD
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