Efficient collecting, clustering, scheduling, and indexing schemes for advertisement of services over Wireless Billboard Channels

Abstract

Efficient mechanisms for broadcasting of service advertisements to Mobile Terminals (MTs) over Wireless Billboard Channels (WBC) are of significant importance for the emerging Ubiquitous Consumer Wireless World (UCWW) 1 . Reducing the MT access time and tuning time are the main goals of these broadcasting mechanisms. The challenge is to define reasonable WBC data management algorithm. Diverse from previous studies, our approach takes into consideration four important data organization schemes, namely the collecting, clustering, scheduling, and indexing of service description. The results show that the performance of the resultant WBC algorithm is close to optimal.

Performance Analysis of "WBC over DVB-H" Link Layer

“…The layered architecture of the designed "WBC over DVB-H" system is shown in Figure 1. The of service advertisements in WBC is an important issue since even a single bit error (in an unprotected message) may result in failure to decode a particular WBC data segment [11]. A section erasure (SE) decoding algorithm based on a cyclic redundancy check (CRC-32) scheme is recommended in the standard ETSI's DVB-H implementation guidelines [8].…”