Title :
Spectrum resource allocation for wireless packet access with application to advanced cellular Internet service
Author :
Chuang, Justin C I ; Sollenberger, Nelson R.
Author_Institution :
AT&T Labs.-Res., Red Bank, NJ, USA
fDate :
8/1/1998 12:00:00 AM
Abstract :
The advanced cellular Internet service (ACIS) is targeted for applications such as Web browsing with a peak downlink transmission rate on the order of 1-2 Mbits/s using a wide-area cellular infrastructure. In order to provide bandwidth on demand using scarce radio spectrum, the medium-access control (MAC) protocol must: 1) handle dynamic and diverse traffic with high throughput, and 2) efficiently reuse limited spectrum with high peak rates and good quality. Most of the existing approaches do not sufficiently address the second aspect. This paper proposes a dynamic packet assignment (DPA) scheme which, without coordinating base stations, allocates spectrum on demand with no collisions and low interference to provide high downlink throughput. Interference sensing and priority ordering are employed to reduce interference probability. A staggered frame assignment schedule is also proposed to prevent adjacent base stations from allocating the same channel to multiple mobiles at the same time. Simulation results based on a packet data traffic model derived from wide-area network traffic statistics, which exhibit a “self-similar” property when aggregating multiple sources, confirm that this method is able to reuse spectrum efficiently in a large cellular system having many users with short active periods. Distributed iterative power control further enhances spectrum efficiency such that the same channel can be simultaneously reused in every base station
Keywords :
Internet; access protocols; cellular radio; distributed control; frequency allocation; interference suppression; iterative methods; packet radio networks; power control; radiofrequency interference; telecommunication control; telecommunication traffic; 1 to 2 Mbit/s; ACIS; DPA; MAC protocol; Web browsing; advanced cellular Internet service; bandwidth on demand; base station; distributed iterative power control; diverse traffic; downlink throughput; downlink transmission rate; dynamic packet assignment; dynamic traffic; interference probability; interference sensing; medium-access control protocol; multiple sources; packet data traffic model; priority ordering; self-similar property; spectrum efficiency; spectrum resource allocation; staggered frame assignment schedule; wide-area cellular infrastructure; wide-area network traffic statistics; wireless packet access; Bandwidth; Base stations; Communication system traffic control; Downlink; Interference; Radio control; Resource management; Throughput; Traffic control; Web and internet services;
Journal_Title :
Selected Areas in Communications, IEEE Journal on