Adaptive Data Delivery

Abstract

Techniques for use in delivering data from a host service to a mobile device operative in a wireless network are disclosed. The host service is configured to maintain in a host memory an availability status indicative of the availability of the mobile device in the wireless network. A router receives an indication signal from the mobile device within a predetermined interval. The indication signal indicates one or more functional states or parameter levels of the mobile device. When the one or more functional states or parameter levels of the indication signal are indicative of availability, and a cached availability status in cache memory of the router equals to unavailable, the router changes the cached availability status from unavailable to available and transmits the changed availability status from the router to the host service for setting the availability status at the host service.

1 - 20 . (canceled) 
     
     
         21 . A method in a router system configured to route messages from a host service to a wireless mobile device via a wireless network, the host service being configured to provide a service for the wireless mobile device, the method in the router system comprising:
 receiving from the host service a message associated with the service for the wireless mobile device, and forwarding the message to the wireless mobile device via the wireless network;
 receiving an indication signal from the wireless mobile device via the wireless network, the indication signal including an indication that indicates unavailability to receive the message associated with the service; 
 determining and setting in memory of the router system an unavailability status associated with the wireless mobile device based on the received indication signal; and 
 providing to the host service the unavailability status associated the wireless mobile device, for indicating to the host service to not send further messages associated with the service to the router system for the wireless mobile device. 
   
     
     
         22 . The method of  claim 21 , further comprising:
 receiving a request from the host service; and   in response to the request, sending the unavailability status associated with the wireless mobile device to the host service.   
     
     
         23 . The method of  claim 21 , further comprising:
 determining the unavailability status associated with the wireless mobile device based on repeated unsuccessful attempts to transmit messages associated with the service to the wireless mobile device.   
     
     
         24 . The method of  claim 21 , wherein the router system is configured to communicate with a plurality of host services which are configured to provide a plurality of services for a plurality of wireless mobile devices. 
     
     
         25 . The method of  claim 21 , wherein the router system is configured to route messages which comprise messages for electronic mail (e-mail). 
     
     
         26 . The method of  claim 21 , wherein the wireless mobile device comprises a cellular telephone. 
     
     
         27 . The method of  claim 21 , wherein the indication comprises a functional state of the wireless mobile device. 
     
     
         28 . The method of  claim 21 , wherein the indication comprises a parameter of the wireless mobile device. 
     
     
         29 . The method of  claim 21 , wherein the indication indicates a status of a battery of the wireless mobile device or a status of available memory space in the wireless mobile device. 
     
     
         30 . The method of  claim 21 , wherein the router system is external to the wireless network and in communication with the host service over a connection via a communication network comprising the Internet. 
     
     
         31 . A router system, comprising:
 a receiver configured to receive from a host service a message associated with a service for a wireless mobile device;   a transmitter configured to forward the' message associated with the service to the wireless mobile device via a wireless network;
 the receiver being further configured to receive an indication signal from the wireless mobile device via the wireless network, the indication signal including an indication that indicates unavailability to receive the message associated with the service; 
 the router system being further configured to determine and set in its memory an unavailability status associated with the wireless mobile device based on the received indication signal; and 
 the transmitter being further configured to provide to the host service the unavailability status associated the wireless mobile device, for indicating to the host service to not send further messages associated with the service to the router system for the wireless mobile device. 
   
     
     
         33 . The router system of  claim 31 , further comprising:
 the receiver being further configured to receive a request from the host service; and   the transmitter being further configured to send, to the host server in response to the request, the unavailability status associated with the wireless mobile device.   
     
     
         34 . The router system of  claim 31 , which is further configured to determine the unavailability status associated with the wireless mobile device based on repeated unsuccessful attempts to transmit messages associated with the service to the wireless mobile device. 
     
     
         35 . The router system of  claim 31 , which is further configured to communicate with a plurality of host services which are configured to provide a plurality of services for a plurality of wireless mobile devices. 
     
     
         36 . The router system of  claim 31 , which is further configured to route messages which comprise messages for electronic mail (e-mail). 
     
     
         37 . The router system of  claim 31 , which is configured to communicate with a wireless mobile device comprising a cellular telephone. 
     
     
         38 . The router system of  claim 31 , wherein the indication comprises a functional state of the wireless mobile device. 
     
     
         39 . The router system of  claim 31 , wherein the indication comprises a parameter of the wireless mobile device. 
     
     
         40 . The router system of  claim 31 , wherein the indication indicates a status of a battery of the wireless mobile device or a status of available memory space in the wireless mobile device. 
     
     
         41 . The router system of  claim 31 , which is external to the wireless network and in communication with the host service over a connection via a communication network comprising the Internet.