Multirate Retry Threshold Loss Models

This chapter considers multirate loss models of random arriving calls with elastic bandwidth requirements and fixed bandwidth allocation during service. Calls may retry several times upon arrival (requiring less bandwidth each time) in order to be accepted for service. Alternatively, calls may request less bandwidth upon arrival, according to the occupied link bandwidth indicated by threshold(s). In the single‐retry model (SRM) under the BR policy, t
_k
b.u. are reserved to benefit calls of all other service‐classes apart from service‐class
k
. The application of the BR policy in the SRM is similar to that of the EMLM/BR. In the connection dependent threshold model (CDTM) under the BR policy, t
_k
b.u. are reserved to benefit calls of all other service‐classes apart from service‐class
k
. The application of the BR policy in the CDTM is similar to that of the MTM/BR.