Development in new Radio
Access Technologies (RATs) and increase
in user demand for ubiquitous high speed access are driving the
deployment of a wide array of wireless networks, ranging from
wireless WAN, to wireless MAN, Wireless LAN and wireless PAN.
With
their complementary characteristics especially in terms of data
rate and coverage, it is envisioned that Beyond-3G system will
integrate these heterogeneous networks to offer overlapping
coverage to mobile users.
To enhance cellular
network's throughput and coverage whilst reducing infrastructure
investment, power consumption and handover overhead, recently
there are research efforts to study the incorporation of relay model, which allows Mobile Station (MS) and Base
Station (BS) to communicate with each other through multiple
hops.
From these two dimensions, we sketch out a possible design space
for heterogeneous wireless networks.
Heterogeneous wireless networks pose many interesting research
challenges. Among which, resource management in such a hybrid
environment is still an open problem. Wireless provider can
assign
MSs to the most appropriate one in a candidate list of BSs of
heterogeneous RATs. Relay model also indicates performance
improvement potential. The challenge for wireless operator is to
efficiently allocate the scarcely available radio resources
exploiting the diversity gain of multiple RATs and relay model,
to
support a variety of applications with different QoS
requirements
and maximize revenue.
We analyze resource allocation issues for both
elastic traffic and non-elastic traffic in overlapping
single-hop non-interference wireless networks. .
PhD Thesis proposal [slides] (Dec 27, 2005)
Chen
Bin Bin and Chan Mun Choon, ˇ°Resource Management in Heterogeneous
Wireless Networks with Overlapping coverageˇ±, COMSWARE, New Delhi,
India, January 2006 [slides]
Chen
Bin Bin and Chan Mun Choon, ˇ°Proportional Fairness for Overlapping Cells
in Wireless Networksˇ±, VTC 2006-Fall, 25-28 September, Montreal, Canada [slides]
ˇˇ
