Patent ID: 7706772
Filing Date: 2010-04-27
Classification: H04M,H04W,Y02D

Abstract:
1. A method of a battery-powered mobile wireless network device comprising: determining by a battery-powered mobile wireless network device that a period of signal intermittence has started by detecting threshold conditions for a transient network signal being intermittently found and intermittently lost; recording by said mobile wireless network device events of said threshold conditions with operational criteria associated with operational conditions of the events; upon each detection of network signal loss, determining by said mobile wireless network device from said event records a sleep termination condition upon which network signal has been historically reliable following said period of signal intermittence, and determining a sleep duration after which said signal historically becomes reliable and non-intermittent according to said event records; avoiding re-registration by said mobile wireless network device into a wireless network by entering a sleep mode by powering down one or more functions or circuits of said mobile wireless network device selected from a group comprising a protocol circuit, an error checking circuit, an error correction circuit, a security circuit, an encryption circuit, a decryption circuit, a radio signal modulation circuit, a radio signal demodulation circuit, a radio frequency frontend, and an antenna; and waking by said mobile wireless network device from said sleep mode upon detection of said sleep termination condition, or upon elapse of said sleep duration staffing from said step of determining that a period of signal intermittence has staffed, by enabling said powered down functions or circuits of said mobile wireless network device, thereby resuming attempts to re-register into a wireless network.