Vk. Varma et al., INTEGRATED ALERTING AND SYSTEM BROADCAST CHANNEL FOR A WIRELESS ACCESS SYSTEM, IEEE transactions on vehicular technology, 45(1), 1996, pp. 157-163
A protocol is described which allows a wireless access system to dynam
ically multiplex the alerting, system information, and priority access
request subchannels on its system-wide broadcast channel. These subch
annels each have different requirements with respect to the message le
ngth and position within the framing structure; the described protocol
meets each of their requirements. The protocol efficiently accommodat
es a wide range of alerting traffic levels and provides for efficient
downloading of system information to subscriber units by using excess
capacity when alerting traffic is low. It provides error detection cap
abilities above that provided by the radio channel alone and is easily
extendible to accommodate other services such as paging and low bandw
idth broadcast messaging. The flexibility provided by this protocol co
uld permit a broad range of network architectures for wireless access.