Publishing Venue
Motorola
Related People
Authors:
Alex Rozenstrauch
•
Mike Sasuta
•
Calvin Fu
Abstract
In a wireless, trunking communication system, the number of communication channels are normally constant. During peak hours, a system may tempo- rarily run out of free channels and consequently queue a service request. The queuing action results in a wait timer for the user and may even result in service denial if the wait time exceeds a pre-define threshold. The method for increasing the statistical probability of satisfying the service request within an acceptable response time is described herein.
Page 1 of 2
MOTOROLA Technical Developments Volume 24 March 1995
2 PHASE RF CHANNEL ALLOCATION
by Alex Rozenstrauch, Mike Sasuta and Calvin Fu
INTRODUCTION
In a wireless, trunking communication system, the number of communication channels are normally constant. During peak hours, a system may tempo- rarily run out of free channels and consequently queue a service request. The queuing action results in a wait timer for the user and may even result in service denial if the wait time exceeds a pre-define threshold. The method for increasing the statistical probability of satisfying the service request within an acceptable response time is described herein.
have the capability to operate on the borrowed fre- quency and be able to reach the borrowed trans- ceiver (overlapping coverage).
The enclosed drawing shows two systems linked together with a WAN (wide area network) which can be used for a channel request/response and sub- sequent call control. As shown in the drawing, the coverage area of the two systems is partially overlapped. In this figure, MS has requested service ofthe first system, but there are no channels availa- ble in this first system. The first system requests to "borrow" a channel from the second system. The second system has an available resource which can be assigned for use by the MS. The MS then com- pletes its service using the channel resource of the second system, even though the service request ini- tiated to the first system.
DESCRIPTION
The method consists of two (2) phase channel allocation:
In the first phase an attempt is made to allocate a free channel locally to satisfl the service request, and if a channel can not be allocated locally,...
