Optimizing the ARQ performance in downlink packet data systems with scheduling

Third generation wireless systems typically employ adaptive coding and modulation, scheduling, and Hybrid Automatic Repeat reQuest (HARQ) techniques to provide high-speed packet data service on the downlink. Two main considerations in designing such a system are algorithms for the selection of codin...

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Bibliographic Details
Published in:IEEE transactions on wireless communications Vol. 4; no. 2; pp. 495 - 506
Main Authors: Haitao Zheng, Viswanathan, H.
Format: Journal Article
Language:English
Published: Piscataway, NJ IEEE 01.03.2005
Institute of Electrical and Electronics Engineers
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects:
Adaptive coding
Algorithm design and analysis
Algorithms
Applied sciences
Automatic repeat request
Data systems
Downlink
Exact sciences and technology
hybrid automatic repeat reQuest (HARQ)
Hybrid power systems
link adaptation
Modulation coding
Operation, maintenance, reliability
packet radio networks
packet scheduling algorithm
quality of service
scheduling
Signal mapping
Signal to noise ratio
Studies
Switching and signalling
Systems, networks and services of telecommunications
Telecommunications
Telecommunications and information theory
Throughput
Transmission and modulation (techniques and equipments)
wireless communications
Performance evaluation
wireless communications
Adaptive system
Wireless telecommunication
Error rate
Information rate
hybrid automatic repeat reQuest (HARQ)
Downlink
Mapping
Optimization
Packet radio networks
Adaptive modulation
Modulation coding
Packet switching
Scheduling
quality of service
Algorithm
Hybrid mode
Information transmission
packet scheduling algorithm
Adaptive coding
Signal interference
Simulation
Signal to interference plus noise ratio
Automatic repeat request
Service quality
link adaptation
ISSN:1536-1276, 1558-2248
Online Access:Get full text
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Description
Summary:Third generation wireless systems typically employ adaptive coding and modulation, scheduling, and Hybrid Automatic Repeat reQuest (HARQ) techniques to provide high-speed packet data service on the downlink. Two main considerations in designing such a system are algorithms for the selection of coding and modulation schemes based on the channel quality of the link and algorithms for the selection of the user to whom a particular slot is assigned. We propose a systematic approach to optimize the mapping between signal-to-interference-and-noise ratio (SINR) and modulation and coding scheme (MCS) to maximize the throughput by taking into account the type of HARQ scheme employed. We also propose to incorporate frame error rate (FER) and retransmission information as a part of the scheduling decision. The proposed scheduler ranking methods based on using an effective rate rather than the instantaneous rate provide natural priority to retransmissions over new transmissions, and priority to users with better channel quality. Extensive simulation results comparing performance of the proposed methods to conventional methods are presented.
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ISSN:1536-1276
1558-2248
DOI:10.1109/TWC.2004.843012