TY - GEN
T1 - Piggybacking lightweight control messages on physical layer for multicarrier wireless LANs
AU - Feng, Bing
AU - Zhang, Chi
AU - Wei, Lingbo
AU - Fang, Yuguang
N1 - Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].
PY - 2016
Y1 - 2016
N2 - Piggyback is an effective scheme to transmit control messages in wireless local area networks (WLANs). In traditional approaches, the piggyback scheme is achieved by redefining or adding control fields in the MAC frame header, i.e., MAC layer piggyback scheme. However, this method has shortcomings. In this paper, we design and present PhyPig (Physical Piggyback), a cross-layer design for lightweight control channel. In the newly proposed communication strategy, the control messages are piggybacked on OFDM-based physical layer so that PhyPig does not consume extra channel resources, and does not harm the normal data throughput. Specifically, PhyPig modulates control messages (or sequences of binary bits) into null or non-null (i.e., normal) data symbols, the minimum 2-D time-frequency resource unit in OFDM. The thus-transmitted messages can be interpreted by checking the patterns of data symbols on OFDM subcarriers. Our extensive results validate the feasibility of PhyPig and show that PhyPig delivers control messages with close to 100% accuracy on a channel with practical SNR regions. Further, based on our simulation results, we demonstrate that PhyPig outperforms traditional piggyback scheme with significant performance improvements in different scenarios.
AB - Piggyback is an effective scheme to transmit control messages in wireless local area networks (WLANs). In traditional approaches, the piggyback scheme is achieved by redefining or adding control fields in the MAC frame header, i.e., MAC layer piggyback scheme. However, this method has shortcomings. In this paper, we design and present PhyPig (Physical Piggyback), a cross-layer design for lightweight control channel. In the newly proposed communication strategy, the control messages are piggybacked on OFDM-based physical layer so that PhyPig does not consume extra channel resources, and does not harm the normal data throughput. Specifically, PhyPig modulates control messages (or sequences of binary bits) into null or non-null (i.e., normal) data symbols, the minimum 2-D time-frequency resource unit in OFDM. The thus-transmitted messages can be interpreted by checking the patterns of data symbols on OFDM subcarriers. Our extensive results validate the feasibility of PhyPig and show that PhyPig delivers control messages with close to 100% accuracy on a channel with practical SNR regions. Further, based on our simulation results, we demonstrate that PhyPig outperforms traditional piggyback scheme with significant performance improvements in different scenarios.
KW - Cross-layer design
KW - Lightweight control channel
KW - OFDM
KW - Piggybacking
KW - WLANs
UR - http://www.scopus.com/inward/record.url?scp=84981295062&partnerID=8YFLogxK
UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-84981295062&origin=recordpage
U2 - 10.1007/978-3-319-42836-9_7
DO - 10.1007/978-3-319-42836-9_7
M3 - RGC 32 - Refereed conference paper (with host publication)
SN - 9783319428352
VL - 9798 LNCS
T3 - Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
SP - 68
EP - 79
BT - Wireless Algorithms, Systems, and Applications - 11th International Conference, WASA 2016, Proceedings
PB - Springer Verlag
T2 - 11th International Conference on Wireless Algorithms, Systems, and Applications, WASA 2016
Y2 - 8 August 2016 through 10 August 2016
ER -