A multimedia wireless multiple access protocol for mobile terminals

Abstract

A wireless multiple access protocol for multimedia traffic (MWMA) is discussed. MWMA is used when a large number of users dynamically migrating to/from a private network communicate multimedia messages with mobile terminals. The protocol uses a stable continual tree algorithm to reserve slots of a channel. MWMA assigns slots to real‐time messages at high priority up to an upper limit in order to preserve a constant bandwidth for the messages, allocating the rest of the slots to non‐real‐time messages. Though the frame length is basically fixed, the protocol divides a frame into smaller frames after the assignment if several free slots are still available in order to decrease undesirable delay of non‐real‐time messages. The protocol uses a central control, which enables it to reduce energy restrictions on mobile terminals and to handle dynamic migration of mobile terminals and hidden terminals. © 1999 Scripta Technica, Electron Comm Jpn Pt 1, 82(8): 1–12, 1999