Browse Prior Art Database

GROUP CALLS ON VARIABLE BANDWIDTH CHANNELS, DYNAMIC ASSIGNMENT OF CHANNEL TYPE

IP.com Disclosure Number: IPCOM000009780D
Original Publication Date: 2000-May-01
Included in the Prior Art Database: 2002-Sep-18

Publishing Venue

Motorola

Related People

Authors:
Kamala Urs Valy Lev Arieh Cimet

Abstract

As dispatch systems evolve, issues arise with multiple generations of subscriber units needing to operate on a single system. These subscriber units may have different requirements for bandwidth, modulation, etc. Group call becomes a particular issue, since all subscribers participating in a group call within a cell share a single channel. The system may not know what subscriber units are participating in a group call, since only one subscriber unit in any cell sends in a page response. The other subscriber units join the group call but do not signal their intent to do so in order to optimize the system.