TY - GEN
T1 - Bandwidth optimization in hetnets with competing service providers
AU - Chen, Cheng
AU - Berry, Randall A.
AU - Honig, Michael L.
AU - Subramanian, Vijay G.
N1 - Publisher Copyright:
© 2015 IEEE.
PY - 2015/8/4
Y1 - 2015/8/4
N2 - We consider a wireless network in which multiple Service Providers (SPs) compete to provide both macrocell and femtocell services in different bands. There are two types of users: mobile users that can only connect to macrocells, and fixed users that can be served by both macrocells and femtocells. For a given allocation of bandwidths across SPs, we characterize for each SP the optimal bandwidth split across the macro- and femtocells along with the equilibrium prices. We show that there exists a unique Nash equilibrium wherein for each SP, macrocells only serve mobile users while femtocells only serve fixed users. All possible Nash equilibria for different system parameters are sorted into four categories corresponding to whether or not different SPs assign bandwidth to the macro- and/or femtocells. In addition, we characterize properties of each category. The equilibrium prices and macro/femto bandwidths can be computed via a series of best response updates, which is proven to converge. Conditions are also given that guarantee optimal social welfare as the number of SPs tends to infinity. Numerical results are presented to illustrate how the Nash equilibrium can change as a function of SP bandwidths.
AB - We consider a wireless network in which multiple Service Providers (SPs) compete to provide both macrocell and femtocell services in different bands. There are two types of users: mobile users that can only connect to macrocells, and fixed users that can be served by both macrocells and femtocells. For a given allocation of bandwidths across SPs, we characterize for each SP the optimal bandwidth split across the macro- and femtocells along with the equilibrium prices. We show that there exists a unique Nash equilibrium wherein for each SP, macrocells only serve mobile users while femtocells only serve fixed users. All possible Nash equilibria for different system parameters are sorted into four categories corresponding to whether or not different SPs assign bandwidth to the macro- and/or femtocells. In addition, we characterize properties of each category. The equilibrium prices and macro/femto bandwidths can be computed via a series of best response updates, which is proven to converge. Conditions are also given that guarantee optimal social welfare as the number of SPs tends to infinity. Numerical results are presented to illustrate how the Nash equilibrium can change as a function of SP bandwidths.
UR - http://www.scopus.com/inward/record.url?scp=84943231667&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84943231667&partnerID=8YFLogxK
U2 - 10.1109/INFCOMW.2015.7179435
DO - 10.1109/INFCOMW.2015.7179435
M3 - Conference contribution
AN - SCOPUS:84943231667
T3 - Proceedings - IEEE INFOCOM
SP - 504
EP - 509
BT - 2015 IEEE Conference on Computer Communications Workshops, INFOCOM WKSHPS 2015
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - IEEE Conference on Computer Communications Workshops, INFOCOM WKSHPS 2015
Y2 - 26 April 2015 through 1 May 2015
ER -