Performance Bounds for Joint Power Control & Link Adaption for NRT bearers in Centralized (Bunched) Wireless Network
1999 (English)Conference paper (Refereed)
Third generation wireless systems, e.g. the UMTS/UTRA scheme will provide bearer services suitable for for wideband multimedia communications. The physical implementation of the different bearer services includes the solution of new and interesting radio resource management problems. In particular the non-real time applications have been in the focus of standardization efforts since applications like wireless internet and web browsing are considered as driving the wireless evolution. These applications offer new challenges since they will be able to use any excess bandwidth that the system may be able to provide in a best effort fashion as soon as minimum rate guarantees have been honored. Choosing how the transmitter power should be controlled to achieve these minimum rate requirements is a straightforward task given the previous work in the field. In this paper, we will however, address the problem how the scheduling of transmission bursts and the transmitter power should be controlled to maximize the use of the excess capacity to achieve maximal total throughput. The system chosen as example here is a UMTS TD/CDMA system in a "bunch"-configuration allowing centralized resource management [6,7] as proposed in the ACTS/FRAMES project. The problem is formalized and several of its properties are demonstrated. Results show that depending on the link configuration and the propagation conditions, either sequential scheduling of bearer slots as well as simultaneous slot reuse may achieve optimum throughput.
Place, publisher, year, edition, pages
New York: IEEE , 1999.
Computer and Information Science
Research subject SRA - ICT
IdentifiersURN: urn:nbn:se:kth:diva-28119OAI: oai:DiVA.org:kth-28119DiVA: diva2:383978
Int. Symp. Personal, Indoor and Mobile Radio Communications (PIMRC)
QC 201101112011-01-062011-01-062011-01-11Bibliographically approved