TY - GEN
T1 - Design and experimental evaluation of C-MAC solutions for heterogeneous spectrum sharing
AU - Sobron, Iker
AU - Regueiro, Cristina
AU - Eizmendi, Inaki
AU - Gil, Unai
AU - Velez, Manuel
N1 - Publisher Copyright:
© 2016 IEEE.
PY - 2016/12/21
Y1 - 2016/12/21
N2 - Cognitive medium access control (C-MAC) protocols employ several mechanisms that deal with the heterogeneity of a coexistence scenario with multiple wireless systems in the same band. The underutilized channels of some bands such as the TV white spaces (TVWS), are valuable and tangible resources within the congested spectrum for providing new wireless services on licensed and license-exempt basis. This paper presents a new C-MAC protocol based on a sequential frequency hopping scheme with a proactive spectrum sensing phase for opportunistic spectrum sharing. The proposal has been implemented over a software defined radio (SDR) testbed and experimentally assessed in indoor radio-propagation conditions. In addition, the performance of the proposed protocol has been compared with other C-MAC schemes, also implemented over the SDR-based framework. Performance results in terms of free-collision channel occupation rate and transmission throughput show that the proposed architecture outperforms other C-MAC protocols in scenarios with low and medium density of cognitive users per available channel. In contrast, experimental results have shown that partially observable Markov decision process (POMDP)-based solutions are more suitable when the available channels are fewer than the cognitive links.
AB - Cognitive medium access control (C-MAC) protocols employ several mechanisms that deal with the heterogeneity of a coexistence scenario with multiple wireless systems in the same band. The underutilized channels of some bands such as the TV white spaces (TVWS), are valuable and tangible resources within the congested spectrum for providing new wireless services on licensed and license-exempt basis. This paper presents a new C-MAC protocol based on a sequential frequency hopping scheme with a proactive spectrum sensing phase for opportunistic spectrum sharing. The proposal has been implemented over a software defined radio (SDR) testbed and experimentally assessed in indoor radio-propagation conditions. In addition, the performance of the proposed protocol has been compared with other C-MAC schemes, also implemented over the SDR-based framework. Performance results in terms of free-collision channel occupation rate and transmission throughput show that the proposed architecture outperforms other C-MAC protocols in scenarios with low and medium density of cognitive users per available channel. In contrast, experimental results have shown that partially observable Markov decision process (POMDP)-based solutions are more suitable when the available channels are fewer than the cognitive links.
UR - https://www.scopus.com/pages/publications/85010073018
U2 - 10.1109/PIMRC.2016.7794810
DO - 10.1109/PIMRC.2016.7794810
M3 - Conference contribution
AN - SCOPUS:85010073018
T3 - IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC
BT - 2016 IEEE 27th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications, PIMRC 2016
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 27th IEEE Annual International Symposium on Personal, Indoor, and Mobile Radio Communications, PIMRC 2016
Y2 - 4 September 2016 through 8 September 2016
ER -