Evaluation of packet-by-packet downlink radio resource management schemes

Author

Eriksson, Magnus

Author_Institution

Radio Commun. Syst. Group, R. Inst. of Technol., Stockholm, Sweden

Volume

2

fYear

2001

fDate

2001

Firstpage

967

Abstract

The OFDM based terrestrial digital video broadcasting system (DVB-T) can be utilized for asymmetric Internet access with a downlink peak bit rate of 10-20Mbps. A narrow-band cellular communications system cam be used as uplink. This paper is a comparison of centralized dynamic radio resource management schemes for this downlink packet radio system. Spectrum efficiency in bit/s/Hz/transmitter, and fairly shared spectrum efficiency in bit/s/Hz/transmitter, are evaluated for a best-effort traffic snapshot model. The dynamic packet assignment (DPA) algorithm performs combined packet scheduling and rapid dynamic channel allocation. Even better performance is achieved by the dynamic single frequency networks (DSFN) scheme. It exploits the macro-diversity capability of OFDM modulation. The base station transmitters are dynamically divided into groups that send the same information at the same channel frequency simultaneously

Keywords

Internet; OFDM modulation; channel allocation; digital video broadcasting; diversity reception; packet radio networks; radio spectrum management; scheduling; 10 to 20 Mbit/s; DPA algorithm; DSFN scheme; DVB-T; OFDM based terrestrial digital video broadcasting system; OFDM modulation; asymmetric Internet access; base station transmitters; best-effort traffic snapshot model; centralized dynamic radio resource management schemes; downlink packet radio system; downlink peak bit rate; dynamic channel allocation; dynamic packet assignment algorithm; dynamic single frequency networks scheme; fairly shared spectrum efficiency; macro-diversity capability; narrow-band cellular communications system; packet scheduling; packet-by-packet downlink radio resource management schemes; spectrum efficiency; Bit rate; Digital video broadcasting; Downlink; Internet; Narrowband; OFDM; Packet radio networks; Radio transmitters; Resource management; Scheduling algorithm;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference, 2001. VTC 2001 Spring. IEEE VTS 53rd

Conference_Location

Rhodes

ISSN

1090-3038

Print_ISBN

0-7803-6728-6

Type

conf

DOI

10.1109/VETECS.2001.944522

Filename

944522