TY - GEN
T1 - Increasing cellular capacity using ISM band side-channels
T2 - 4th ACM Workshop on All Things Cellular: Operations, Applications, and Challenges, AllThingsCellular 2014
AU - Bai, Jingwen
AU - Liu, Chenxi
AU - Sabharwal, Ashutosh
PY - 2014
Y1 - 2014
N2 - The rise of ISM band radios, notably for WiFi, with near-default inclusion in smartphones, has been phenomenal. The use of ISM band radios is largely controlled by end-users for data access, either directly connecting to a WiFi access point or wireless tethering. We study an additional use of ISM bands to manage interference in cellular bands, by creating ISM "side-channels" between mobile clients. Our objective is to increase the network capacity in cellular bands, when there is no opportunity of data offloading to WiFi. We first study the likelihood of finding a WiFi-free environment, specifically on highways, to establish an ISM side-channel between smartphones. The likelihood is found by experimentally studying the range of WiFi links between smartphones with our designed Android applications, combined with rush hour traffic data on highways; the result is that there is high probability of finding at least one smartphone within the ISM band range. Finally, we show that the proposed use of ISM side-channels can significantly reduce interference in a MIMO wireless system and increase the overall cellular network capacity, by flexibly accommodating both multiuser beam-forming and full-duplex operation.
AB - The rise of ISM band radios, notably for WiFi, with near-default inclusion in smartphones, has been phenomenal. The use of ISM band radios is largely controlled by end-users for data access, either directly connecting to a WiFi access point or wireless tethering. We study an additional use of ISM bands to manage interference in cellular bands, by creating ISM "side-channels" between mobile clients. Our objective is to increase the network capacity in cellular bands, when there is no opportunity of data offloading to WiFi. We first study the likelihood of finding a WiFi-free environment, specifically on highways, to establish an ISM side-channel between smartphones. The likelihood is found by experimentally studying the range of WiFi links between smartphones with our designed Android applications, combined with rush hour traffic data on highways; the result is that there is high probability of finding at least one smartphone within the ISM band range. Finally, we show that the proposed use of ISM side-channels can significantly reduce interference in a MIMO wireless system and increase the overall cellular network capacity, by flexibly accommodating both multiuser beam-forming and full-duplex operation.
KW - capacity
KW - device-to-device communication
KW - interference management
KW - ISM side-channels
UR - http://www.scopus.com/inward/record.url?scp=84907385095&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84907385095&partnerID=8YFLogxK
U2 - 10.1145/2627585.2627586
DO - 10.1145/2627585.2627586
M3 - Conference contribution
AN - SCOPUS:84907385095
SN - 9781450329903
T3 - AllThingsCellular 2014 - Proceedings of the 4th ACM Workshop on All Things Cellular: Operations, Applications, and Challenges
SP - 9
EP - 14
BT - AllThingsCellular 2014 - Proceedings of the 4th ACM Workshop on All Things Cellular
PB - Association for Computing Machinery
Y2 - 22 August 2014 through 22 August 2014
ER -