Spectrum Sharing between Wireless Networks
| dc.creator | Grokop, Leonard | |
| dc.creator | Tse, David N. C. | |
| dc.date | 2008-09-17 | |
| dc.date.accessioned | 2026-07-07T10:03:28Z | |
| dc.date.available | 2026-07-07T10:03:28Z | |
| dc.description | We consider the problem of two wireless networks operating on the same (presumably unlicensed) frequency band. Pairs within a given network cooperate to schedule transmissions, but between networks there is competition for spectrum. To make the problem tractable, we assume transmissions are scheduled according to a random access protocol where each network chooses an access probability for its users. A game between the two networks is defined. We characterize the Nash Equilibrium behavior of the system. Three regimes are identified; one in which both networks simultaneously schedule all transmissions; one in which the denser network schedules all transmissions and the sparser only schedules a fraction; and one in which both networks schedule only a fraction of their transmissions. The regime of operation depends on the pathloss exponent $α$, the latter regime being desirable, but attainable only for $α>4$. This suggests that in certain environments, rival wireless networks may end up naturally cooperating. To substantiate our analytical results, we simulate a system where networks iteratively optimize their access probabilities in a greedy manner. We also discuss a distributed scheduling protocol that employs carrier sensing, and demonstrate via simulations, that again a near cooperative equilibrium exists for sufficiently large $α$. | |
| dc.identifier | https://arxiv.org/abs/0809.2840 | |
| dc.identifier | http://arxiv.org/abs/0809.2840 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/169299 | |
| dc.subject | Information Theory | |
| dc.title | Spectrum Sharing between Wireless Networks | |
| dc.type | text |