Efficient communication with passive devices

Efficient delivery of information services information

Efficient direct call database management for mobile devices...

Efficient high latitude service area satellite mobile...

Efficient location determination for mobile units

Efficient location management strategies in a UMTS-based...

Efficient location of mobile radiotelephones using cellular...

Efficient neighbor list creation for cellular networks

Efficient radio link adaptation and base station sector...

Efficient re-registration of mobile IP nodes

Efficient resource management for packet data services

Efficient system and method of monitoring neighboring cells...

Efficient wireless call delivery across regional and...

Electric device capable of being controlled based on data...

Electric field detecting method

Electronic apparatus

Electronic apparatus and service providing method used in...

Electronic apparatus and wireless communication control method

Electronic apparatus operating system

Electronic business/personal card and method of use thereof