Performance and service issues in selecting adaptive placement as a load distribution technique

As third and fourth generation wireless networks emerge, operators will manage increasingly diverse services over heterogeneous networks of different technologies, cell sizes and operating environments. Architectural studies on integrated heterogeneous networks propose that a common radio resource manager (CRRM) will achieve higher efficiency by engineering traffic across these networks. Our adaptive placement technique rearranges existing traffic when an MT arrives to a saturated network but is incapable of overflow due to technology or service incompatibilities. This technique has great advantages in performance but is not always appropriate for service reasons. We introduce a late-return technique that has service and performance advantages. We compare its performance to other overflow techniques and discuss service-related issues of when each is appropriate.