System and method for handling simple IP to mobile IP transition
AssigneeBlackBerry Limited
InventorsM. Khaledul Islam, Hao Xue, Jin Kim
Life of this patent
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Abstract
Methods are provided for transitioning between SIP and MIP. Mobile devices, upon detecting a new system, automatically attempt a MIP session to avoid the default position of SIP. A history is maintained of systems visited, and for systems that did not support MIP in the past, a MIP session is not attempted, but rather SIP is initiated from the start.
Claims20
A method for transitioning between a first wireless protocol having geographically dependent addressing and a second wireless protocol having non-geographically dependent addressing, the method comprising:
- a wireless device detecting a new system requiring reconnect of a packet data service while in a state during which link layer connectivity is maintained for the packet data service;
- and
- determining whether the wireless device has previously stored support information for the new system indicating whether a session was previously established using the second wireless protocol, and
- if not, then the wireless device attempting to establish a new ession using the second wireless protocol with the new system, and when the new session using the second wireless protocol is established, the wireless device terminating use of the first wireless protocol thereby transitioning to the second wireless protocol, and storing information regarding the new system support for the second wireless protocol, and
- if so, then attempting to establish the new session with the new system using the first wireless protocol or the second wireless protocol dependent upon the previously stored support information.
A non-transitory computer readable storage medium having computer executable instructions stored thereon for execution on a processor of a wireless device so as to implement a method comprising:
- the wireless device detecting a new system requiring reconnect of a packet data service while in a state during which link layer connectivity is maintained for the packet data service;
- and
- determining whether the wireless device has previously stored support information for the new system indicating whether a session was previously established using the second wireless protocol, and
- if not, then the wireless device attempting to establish a new session using the second wireless protocol with the new system, and when the session using the new second wireless protocol is established, the wireless device terminating use of the first wireless protocol thereby transitioning to the second wireless protocol, and storing information regarding the new system support for the second wireless protocol, and
- if so, then attempting to establish the new session with the new system using the first wireless protocol or the second wireless protocol dependent upon the previously stored support information.
A wireless device configured for transitioning between a first wireless protocol having geographically dependent addressing and a second wireless protocol having non-geographically dependent addressing, the wireless device comprising:
- a transceiver configured to communicate with wireless networks;
- a processor;
- and
- a network determination component configured to implement a method comprising:
- detecting a new system requiring reconnect of a packet data service while in a state during which link layer connectivity is maintained for the packet data service;
- and
- determining whether the wireless device has previously stored support information for the new system indicating whether a session was previously established using the second wireless protocol, and
- if not, then attempting to establish a new session using the second wireless protocol a with the new system, and when the new session using the second wireless protocol is established, terminating use of the first wireless protocol thereby transitioning to the second wireless protocol, and storing information regarding the new system support for the second wireless protocol, and
- if so, then attempting to establish the new session with the new system using the first wireless protocol or the second wireless protocol dependent upon the previously stored support information.
Dependencies are inferred from the claim text.