| Publisher | University of Manchester | ||
|---|---|---|---|
| Format | 138.5KB PDF | Date added | 22 Jan 2004 |
| Topics | Local Area Networks (LAN), Wireless LAN, Mobile - Wireless Communications | ||
| Downloads | 23 | ||
This paper addresses the problem of efficiently integrating speech communication devices, such as cordless telephones, with an "Orthogonal Frequency Division Multiplexing" (OFDM) based wireless LAN. It is argued that traditional "voice over IP" (VoIP) approaches are inefficient for wireless LANs in terms of system overheads, and that more recent proposals, such as the "5- UP" protocol, offer greater promise with the co-existence of OFDM, for high speech packetised data, and simpler (e.g. single carrier) modulation schemes for lower data-rate devices with real time quality of service requirements. A new way of supporting packetised voice is suggested here which is compatible with the IEEE 802.11a and 802.11g standards in "DCF" mode and the "EDCF" features being proposed for 802.11e.
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