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Optimal Radio Resource Partition for Joint Contention- and Connection-Oriented Multichannel Access in OFDMA Systems

Li-Chun Wang, A. Chen
2009 IEEE Transactions on Mobile Computing  
In the IEEE 802.16e WiMax system, a truncated binary back-off algorithm is adopted to resolve the contention in random access, while the time-division OFDMA is used for the connection-oriented access.  ...  One of interesting radio resource allocation issue in the OFDMA system is to partition the overall radio resource (bandwidth and time duration) into two portions: one for random access and the other for  ...  In [4] , a new contention resolution algorithm was proposed for the multichannel random access in OFDMA systems, in which data are transmitted at abundant subchannels so that collisions and access delay  ... 
doi:10.1109/tmc.2008.96 fatcat:pdu42wn6hbfylal7dsgj4foefm

Optimal Radio Resource Partition for Joint Contention- and Connection-Oriented Multi-Channel Access in OFDMA Systems

Li-Chun Wang, Anderson Chen
2008 2008 IEEE 68th Vehicular Technology Conference  
In the IEEE 802.16e WiMax system, a truncated binary back-off algorithm is adopted to resolve the contention in random access, while the time-division OFDMA is used for the connection-oriented access.  ...  One of interesting radio resource allocation issue in the OFDMA system is to partition the overall radio resource (bandwidth and time duration) into two portions: one for random access and the other for  ...  In [4] , a new contention resolution algorithm was proposed for the multichannel random access in OFDMA systems, in which data are transmitted at abundant subchannels so that collisions and access delay  ... 
doi:10.1109/vetecf.2008.293 dblp:conf/vtc/WangC08 fatcat:oyfxxjqxezbjtol2h6ndj6oleq

Multichannel random access in OFDMA wireless networks

Young-June Choi, Suho Park, Saewoong Bahk
2006 IEEE Journal on Selected Areas in Communications  
OFDMA systems are considered promising candidates for implementing next generation wireless communication systems. They provide multiple channels that can be accessed via random access schemes.  ...  However, traditional random access schemes could result in an excessive amount of access delay.  ...  Shroff for their invaluable discussions.  ... 
doi:10.1109/jsac.2005.862422 fatcat:53pf2dhribauvgzf6vj5ejmaha

Dynamic Spectrum Access for Wireless Networking

R. Chandramouli, Ananthram Swami, John Chapin, K. P. Subbalakshmi
2010 EURASIP Journal on Advances in Signal Processing  
Xiao et al. investigate opportunistic spectrum access using a self-similar traffic model for primary transmission in their invited paper.  ...  They propose a collision-free frequency hopping (CFFH) system based on the OFDMA framework and an innovative secure subcarrier assignment scheme.  ...  Xiao et al. investigate opportunistic spectrum access using a self-similar traffic model for primary transmission in their invited paper.  ... 
doi:10.1155/2009/630912 fatcat:j2adngtiw5cbdhw57nysykhipu

OFDMA-Based Medium Access Control for Next-Generation WLANs

H. M. Alnuweiri, Y. Pourmohammadi Fallah, P. Nasiopoulos, S. Khan
2009 EURASIP Journal on Wireless Communications and Networking  
These deficiencies are mainly due to the use of random multiple access techniques in the MAC layer.  ...  To improve throughput, we combine the OFDMA access with a carrier sense multiple access (CSMA) scheme.  ...  In comparison to TDMA-based systems, our system has a simpler random access scheme, that does not require synchronization, and it is suitable for a combination of data and multimedia traffic.  ... 
doi:10.1155/2009/512865 fatcat:5crxpcgsabe2npoiebgrjjnrra

OFDMA CSMA/CA protocol for power line communication

Sung-Guk Yoon, Daeho Kang, Saewoong Bahk
2010 ISPLC2010  
In this paper, we propose a carrier sense multiple access with collision avoidance (CSMA/CA) protocol for OFDMA based PLC systems.  ...  Using the multichannel characteristics of orthogonal frequency-division multiple access (OFDMA) for the random access scheme, the power line communication (PLC) can improve system throughput.  ...  SYSTEM MODEL In this section, we briefly overview the characteristics of the power line channel and OFDMA CSMA/CA proposed in [5] . A.  ... 
doi:10.1109/isplc.2010.5479900 fatcat:3ihkxwwz4fb6bibuh43ycmeu4m

2013 Annual Index

2014 IEEE Transactions on Mobile Computing  
The Author Index contains the primary entry for each item, listed under the rst author's name.  ...  -that appeared in this periodical during 2013, and items from previous years that were commented upon or corrected in 2013.  ...  Leith, Alex, +, TMC Oct. 2013 1907-1919 Joint Physical-Layer and System-Level Power Management for Delay-Sen-Model-Based Analysis of Wireless System Architectures for Real-Time Applications.  ... 
doi:10.1109/tmc.2014.1 fatcat:auiwkgw5hraghc33kunuaddexq

Layer 3 wireless mesh networks: mobility management issues

Kenichi Mase
2011 IEEE Communications Magazine  
many TDMA (Time Division Multiple Access) based protocol has been proposed for WMN in recent times.  ...  The 802.11s MAC (Medium Access Control) is designed using CSMA/CA (Carrier Sense Multiple Access) which is not efficient for dynamic nature of multimedia based application services and to overcome this  ...  In [11] they showed hybrid wireless mesh protocol is not efficient enough for random access MAC, and to overcome this they devolved a flexible model that properties of random access for hybrid wireless  ... 
doi:10.1109/mcom.2011.5936169 fatcat:c6sbcd2ulrcfndlyxanfpetdfe

A Queueing Model for Polled Service in WiMAX/IEEE 802.16 Networks

Rajagopal Iyengar, Biplab Sikdar
2012 IEEE Transactions on Communications  
Models are presented for both single channel and multiple channel (OFDMA based) operations. The models evaluate the MAC layer packet delays as a function of various system parameters.  ...  This paper presents a queueing model for the polling based service classes of WiMAX/IEEE 802.16 based wireless networks.  ...  Delay bounds for OFDMA-TDMA and OFDMA systems for some specific burstiness control schemes are developed in [4] .  ... 
doi:10.1109/tcomm.2012.050812.080150 fatcat:5kkvauor5vcajghnkmulg3f4p4

Queueing analysis of polled service classes in the IEEE 802.16 MAC protocol

Biplab Sikdar
2009 IEEE Transactions on Wireless Communications  
Both single and multiple carrier OFDMA operations are considered and models are proposed for two polling strategies.  ...  The models can be used to provide probabilistic service guarantees and explore the impact of various system parameters on the performance, thereby aiding in system design.  ...  Multichannel Scenario: The comparisons between simulation and analysis for the multichannel OFDMA operation are presented in Fig. 5 . A 10MHz channel was used.  ... 
doi:10.1109/twc.2009.12.090027 fatcat:x3j3hfw655hgpct2eawg2rpvca

A mechanism for detecting session hijacks in wireless networks

Xiaobo Long, Biplab Sikdar
2010 IEEE Transactions on Wireless Communications  
Both single and multiple carrier OFDMA operations are considered and models are proposed for two polling strategies.  ...  The models can be used to provide probabilistic service guarantees and explore the impact of various system parameters on the performance, thereby aiding in system design.  ...  Multichannel Scenario: The comparisons between simulation and analysis for the multichannel OFDMA operation are presented in Fig. 5 . A 10MHz channel was used.  ... 
doi:10.1109/twc.2010.04.081447 fatcat:i5sglfonj5hvnjnqs547zvkfhe

Multiband Massive Channel Random Access in Ultra-Reliable Low-Latency Communication

Md. Abir Hossain, Zhenni Pan, Megumi Saito, Jiang Liu, Shigeru Shimamoto
2020 IEEE Access  
Finally, the air interface latency of the OFSMA system is measured for single packet uplink transmission and compared with that of a traditional OFDMA system.  ...  In this paper, a new multiple-access scheme-Orthogonal Frequency-Subcarrier-based Multiple Access (OFSMA)-is proposed with URLLC's high requirement adaptation.  ...  Multichannel random access in an OFDMA wireless network is analyzed in [33] , that proposed a fast retrial algorithm to forward a packet into a frequency diversity system after a collision in a slotted  ... 
doi:10.1109/access.2020.2989772 fatcat:ep65mup75rbbjmaggjqjagumii

2013 Index

2014 IEEE Transactions on Wireless Communications  
The Author Index contains the primary entry for each item, listed under the first author's name.  ...  -that appeared in this periodical during 2013, and items from previous years that were commented upon or corrected in 2013.  ...  Delay in Random Access Networks.  ... 
doi:10.1109/twc.2011.09.499-tw1401-index fatcat:w5ya5mg3sbcodb2crtuaoyk3su

An Adaptive OFDMA-Based MAC Protocol for Underwater Acoustic Wireless Sensor Networks

Issa M. Khalil, Yasser Gadallah, Mohammad Hayajneh, Abdallah Khreishah
2012 Sensors  
In this work, we present an Orthogonal Frequency Division Multiple Access (OFDMA)-based Media Access Control (MAC) protocol that is configurable to suit the operating requirements of the underwater sensor  ...  We derive the mathematical model for optimal power loading and subcarrier selection, which is used as basis for all modes of operation of the protocol.  ...  The work in [ 17] presents an asynchronous random access MAC called the MACA-DT (short for MACA for Delay Tolerant) protocol.  ... 
doi:10.3390/s120708782 pmid:23012517 pmcid:PMC3444075 fatcat:j74m5tydjzhmfjv6mrngr7r4jq

Stabilization of Contention-Based CDMA Ranging Channel in Wireless Metropolitan Area Networks [chapter]

Jeong-Jae Won, Choong-Ho Cho, Hyong-Woo Lee, Victor C. M. Leung
2005 Lecture Notes in Computer Science  
The current IEEE 802.16a and 802.16d standards of wireless metropolitan area networks specify a ranging channel in the OFDMA physical layer that employs a set of CDMA codes for ranging and bandwidth requests  ...  time Markov chain M/M/1 model.  ...  Mean Delay Time and First Exit Time Analysis In order to find the access delay of requests in the ranging channel, we define X i as the number of backlogged users at the end of the i th frame.  ... 
doi:10.1007/11422778_101 fatcat:n5m7zba4gnbgdb52tqzemjxp4i
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