Adaptive IP handoff triggering and iterative tuning of IP handoff trigger timing
AssigneeNtt Docomo, Inc.
InventorsYoungjune Gwon, Daichi Funato, Guangrui Fu, Atsushi Takeshita
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Abstract
A method and system for providing an adaptive IP handoff triggering system for a wireless communication system that consists of either the same or heterogeneous wireless access technologies. A mobile node is notified of at least one pre-trigger timing parameter by a current access network. At least one variable handoff threshold is constructed with the mobile node based on the at least one pre-trigger timing parameter. An IP handoff is then initiated to a candidate access network when pilot beacon signal strength of the mobile node reaches the variable handoff threshold.
Claims20
A method for providing an adaptive handoff triggering system for a wireless communication system that consists of either the same or heterogeneous wireless access technologies, comprising the steps of:
- notifying a mobile node of at least one pre-trigger timing parameter with a current access network;
- constructing at least one variable handoff threshold with said mobile node based on said at least one pre-trigger timing parameter;
- and
- initiating a handoff to a candidate access network when a pilot beacon signal strength on said mobile node reaches said variable handoff threshold.
An adaptive handoff triggering system for a wireless access network that consists of either the same or heterogeneous wireless access technologies, comprising:
- an active access network connected to a mobile node, wherein said mobile node is provided with at least one pre-trigger timing parameter by said current access network, wherein said mobile node constructs at least one variable handoff threshold based on said at least one pre-trigger timing parameter;
- and
- at least one candidate access network within radio range of said mobile node, wherein a handoff is initiated to said candidate access network when a beacon pilot signal strength on said mobile node reaches said variable handoff threshold.
A method for providing an adaptive handoff triggering system for a wireless communication system that consists of either the same or heterogeneous wireless access technologies, comprising the steps of:
- transmitting a pre-trigger timing parameter to a mobile node;
- measuring a beacon pilot signal strength between said mobile node and a current access network;
- and
- triggering a handoff to a candidate access network when said beacon pilot signal strength reaches a variable handoff threshold.
A method for providing an adaptive handoff triggering system for a wireless communication system, comprising the steps of:
- notifying a mobile node of at least one pre-trigger timing parameter with a current access network;
- constructing at least one variable handoff threshold with said mobile node based on said at least one pre-trigger timing parameter;
- initiating a handoff to a candidate access network when a pilot beacon signal strength on said mobile node reaches said variable handoff threshold;
- reporting an IP blackout duration to said current access network with said mobile node;
- and
- retuning said pre-trigger timing parameter based on said blackout duration with said current access network.
Dependencies are inferred from the claim text.