• Unified mobility architectures integrate inter-networking, handoff, and transport-layer adaptations to enable seamless roaming across heterogeneous networks using IP and ATM technologies. This pattern is evidenced by architecture studies, mobile handoff methodologies, ATM-based transport designs, and IP-based mobile networking work from the period [1], [4], [5], [6], [9].

• Routing and location-aware protocols address dynamic topology in mobile networks through distributed routing, dynamic source routing, and location-aided approaches to optimise paths and resiliency in ad hoc and cellular contexts [8], [13], [17], [19].

• Cross-layer design links modulation, channel assignment, and signaling with transport and networking to improve reliability and handoff performance in mobile systems, highlighting modulation schemes, radio signaling, and transport-layer integration [7], [11], [12], [16].

• Contextual and user-centric mobile computing emphasizes context models, online tracking, and network-aware applications to tailor services and support mobility for users and devices [10], [18], [19], [20].