HIERARCHICAL CONTENT CLASSIFICATION IN INFORMATION TRANSMISSIONS

摘要

A mobile terminal receives "push-type' message broadcasts that carry header information indicating the content of the message. Three hierarchical message category designators each consist of a 16 bit word where only one bit may be set to designate each of 16 categories. The first word indicates the message category at a first hierarchical level, the second word the message category at a second hierarchical that falls within the category designated at the first hierarchical level. Similarly the third word designates a category at a third hierarchical level that falls within the category designated at the second hierarchical level. A user specifies those received message categories that are of interest by profile words and at each hierarchical level a bit-for-bit correlation is performed by correlators respectively. If a match is established at each hierarchical level the complete received message is processed by the device, otherwise it is ignored in order to conserve device resources and reduce power consumption.