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Semi-persistent scheduling method and apparatus based on statistically multiplexing in time and frenquency resources

A semi-permanent scheduling and frequency resource technology, applied in the direction of frequency division multiplexing selection devices, time division multiplexing selection devices, multiplexing system selection devices, etc. problem, achieve the effect of reducing authorization cost, increasing VoIP capacity, and minimizing waste

Active Publication Date: 2011-03-30
ALCATEL LUCENT SHANGHAI BELL CO LTD
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Problems solved by technology

[0007] 2. Dynamic scheduling, allowing only the same L1 / L2 grants as those used for bursty packet traffic (such as best effort);
[0014] Although in principle, dynamic scheduling can be applied to VoIP services like other dynamic packet services (such as best-effort services), considering the strict delay and the requirement to support a large number of VoIP users at the same time, from the point of view of signaling cost, this Pure dynamic scheduling mode is inefficient and not preferred for LTE R8

Method used

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  • Semi-persistent scheduling method and apparatus based on statistically multiplexing in time and frenquency resources
  • Semi-persistent scheduling method and apparatus based on statistically multiplexing in time and frenquency resources
  • Semi-persistent scheduling method and apparatus based on statistically multiplexing in time and frenquency resources

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Embodiment Construction

[0049] Hereinafter, the present invention will be described based on the accompanying drawings. In the following description, some specific embodiments are only used for the purpose of description, and should not be construed as limitations on the present invention, but as examples of the present invention. Descriptions of conventional structures or constructions will be omitted since they may obscure the understanding of the present invention.

[0050] 1. VoIP service characteristics

[0051] For VoIP services, there are two states: dialogue state or silent state. In the dialogue state, only one VoIP packet is transmitted every 20ms; while in the silent state, one SID (Silent Descriptor) packet is transmitted every 160ms, such as figure 1 shown. Furthermore, for UL VoIP transmission, synchronous HARQ is supported.

[0052] 2. For semi-persistent scheduling mode, use TDM / FDM method to share HARQ transmission

[0053] Due to the property that semi-persistent scheduling is ...

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Abstract

A semi-persistent scheduling method and apparatus based on statistically multiplexing in time and frequency resources, the method comprises steps of: allocting each initial transmission to use fixed time and frequency resources reserved for initial transmission by using a persisitent grant, and allocating each retransmission to use time resource reserved for retransmission by using a persistent grant and dynamically allocating each retransmission to use frequency resource reserved for retransmission by using a dynamic grant or a default grant, wherein the initial transmission and the retransmission share the frequency resources within the same time slot.

Description

technical field [0001] The present invention relates to the field of wireless communication, more specifically, to a semi-persistent scheduling method and device based on statistical multiplexing of time and frequency resources, used for semi-persistent scheduling of voice over IP (VoIP) in the uplink Shared Hybrid Automatic Repeat Request (HARQ) process resources. Background technique [0002] In a Long Term Evolution (LTE) system, all services are carried in the packet domain, and Voice over IP (VoIP) is an important service for operators. Scheduling is critical to improving VoIP capacity in terms of Quality of Service (QoS) and channel information. According to the current 3rd Generation Partnership Project (3GPP) progress on uplink (UL) scheduling principles: [0003] 1. An evolved Node B (eNB) may allocate predefined uplink resources for a first Hybrid Automatic Repeat Request (HARQ) transmission and retransmission to a User Equipment (UE). [0004] 2. Dynamic schedu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W16/10H04W28/26H04W72/12
CPCH04L1/1887H04L1/1893H04L5/0037H04L5/0044H04Q11/02H04Q11/04H04Q2213/13367H04Q2213/13292H04Q2213/13392H04L1/1819H04Q2213/13348H04Q2213/13291H04L5/0053
Inventor 尤明礼赵岩杨涛
Owner ALCATEL LUCENT SHANGHAI BELL CO LTD
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