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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Leung, V.C.M. |
| Copyright Year | 1992 |
| Description | Author affiliation: Dept. of Electr. Eng., British Comumbia Univ., Vancouver, BC, Canada (Leung, V.C.M.) |
| Abstract | The protocol design for a mobile radio service supporting half-duplex, push-to-talk, voice communications over mobile satellite systems currently being developed around the world is presented. The service enables a close group of mobile users to communicate among themselves, such that a transmission from any user is received by all. A key issue in the design is the efficient utilization of satellite channels. Demand assignment multiple access (DAMA) is used to allocate channels only to those user-groups in active sessions of conversations. The unique characteristics of the half-duplex, point-to-multipoint group communications necessitate the DAMA protocol proposed for this service. Within a channel assigned to a user-group, access contentions can occur among its members. The resulting loss of capacity due to collisions is exacerbated by the very long round trip delay. A novel access control signal protocol is proposed to detect an resolve across contentions, thus improving channel utilization. Analysis and numerical results are presented to illustrate the efficacy of this protocol. |
| Starting Page | 874 |
| Ending Page | 877 |
| File Size | 480330 |
| Page Count | 4 |
| File Format | |
| ISBN | 0780306732 |
| ISSN | 10903038 |
| DOI | 10.1109/VETEC.1992.245287 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 1992-05-10 |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Land mobile radio Mobile communication Satellite broadcasting Artificial satellites Access protocols L-band Satellite ground stations Base stations Communication system control Signal resolution |
| Content Type | Text |
| Resource Type | Article |
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