Seamless data network telecommunication service during mobile wireless call handoff
First Claim
1. In a data network providing wireless telecommunication service to a mobile wireless node therein by way of addressable communication packets containing customer communication content (“
- packetized communication content”
), the data network being linked to at least two base stations for communicating with the mobile wireless node when it is located in geographic areas respectively served by the base stations, said data network further including a network routing node assigned to said mobile wireless node and serving as a home agent located in a home subnetwork of said mobile wireless node, said home agent being configured to intercept packetized communication content addressed to a home data network address permanently assigned to said mobile wireless node and to tunnel said packetized communication content to a temporary care-of data network address registered on behalf of said mobile wireless node, a method for providing seamless data network telecommunication service to the mobile wireless node during a mobile wireless call handoff procedure resulting in the mobile wireless node being handed off from a first one of the base stations to second one of the base stations, comprising the steps of;
prior to initiation of said call handoff procedure, controlling said home agent to route said packetized communication content on behalf of said mobile wireless node to a first care-of data network address for delivery to said mobile wireless node via said first base station;
following initiation of said call handoff procedure, notifying said home agent of said call handoff procedure and a second care-of data network address;
controlling said home agent to route said packetized communication content on behalf of said mobile wireless node to said second care-of data network address for delivery to said mobile wireless node via said second base station, while continuing to route the same packetized communication content to said first care-of data network address for delivery to said mobile wireless node via said first base station; and
upon completion of said call handoff procedure, controlling said home agent to terminate the routing of said packetized communication content on behalf of said mobile wireless node to said first care-of data network address.
1 Assignment
0 Petitions
Accused Products
Abstract
A system and method provide seamless data network telecommunication service to a mobile wireless node during mobile wireless call handoff from a first base station to a second base station. Prior to call handoff, communication content addressed to the mobile wireless node is routed to a first address for delivery to the mobile wireless node via the first base station. Upon initiation of the call handoff, the communication content is routed to a second address for delivery to the mobile wireless node via the second base station. At the same time, routing of the same communication content is continued to the first address. Upon completion of the call handoff, communication content routing to the first address is terminated.
120 Citations
15 Claims
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1. In a data network providing wireless telecommunication service to a mobile wireless node therein by way of addressable communication packets containing customer communication content (“
- packetized communication content”
), the data network being linked to at least two base stations for communicating with the mobile wireless node when it is located in geographic areas respectively served by the base stations, said data network further including a network routing node assigned to said mobile wireless node and serving as a home agent located in a home subnetwork of said mobile wireless node, said home agent being configured to intercept packetized communication content addressed to a home data network address permanently assigned to said mobile wireless node and to tunnel said packetized communication content to a temporary care-of data network address registered on behalf of said mobile wireless node, a method for providing seamless data network telecommunication service to the mobile wireless node during a mobile wireless call handoff procedure resulting in the mobile wireless node being handed off from a first one of the base stations to second one of the base stations, comprising the steps of;prior to initiation of said call handoff procedure, controlling said home agent to route said packetized communication content on behalf of said mobile wireless node to a first care-of data network address for delivery to said mobile wireless node via said first base station;
following initiation of said call handoff procedure, notifying said home agent of said call handoff procedure and a second care-of data network address;
controlling said home agent to route said packetized communication content on behalf of said mobile wireless node to said second care-of data network address for delivery to said mobile wireless node via said second base station, while continuing to route the same packetized communication content to said first care-of data network address for delivery to said mobile wireless node via said first base station; and
upon completion of said call handoff procedure, controlling said home agent to terminate the routing of said packetized communication content on behalf of said mobile wireless node to said first care-of data network address. - View Dependent Claims (2, 3, 4, 5, 6, 7)
- packetized communication content”
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8. In a data network providing wireless telecommunication service to a mobile wireless node therein by way of addressable communication packets containing customer communication content (“
- packetized communication content”
), the data network being linked to at least two base stations for communicating with the mobile wireless node when it is located in geographic areas respectively served by the base stations, a system for providing seamless telecommunication service on behalf of the mobile wireless node during a mobile wireless call handoff procedure resulting in the mobile wireless node being handed off from a first base station to a second base station in the data network, comprising;a network routing node assigned to said mobile wireless node, said network routing node being a home agent located in a home subnetwork of said mobile wireless node, said home agent being configured to intercept packetized communication content addressed to a home data network address permanently assigned to said mobile wireless node and to tunnel said packetized communication content to a temporary care-of data network address registered on behalf of said mobile wireless node;
means in said home agent, implemented prior to initiation of said call handoff procedure, for routing said packetized communication content on behalf of said mobile wireless node to a first care-of data network address for delivery to said mobile wireless node via said first base station;
means in said home agent, implemented following initiation of said call handoff procedure, for receiving a notification of said call handoff procedure and a second care-of data network address;
means in said home agent, implemented following initiation of said call handoff procedure, for routing said packetized communication content on behalf of said mobile wireless node to a second care-of data network address for delivery to said mobile wireless node via said second base station, while continuing to route the same packetized communication content to said first care-of data network address; and
means in said home agent, implemented upon completion of said call handoff procedure, for terminating the routing of packetized communication content on behalf of said mobile wireless node to said first care-of data network address. - View Dependent Claims (9, 10, 11, 12, 13, 14)
- packetized communication content”
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15. A data network-implemented wireless telecommunication system with improved service provision of addressable communication packets containing customer communication content (“
- packetized communication content”
) to mobile wireless communication devices during call handoff, comprising;a first base station configured to communicate with mobile wireless communication devices located in a first geographic area served by said first base station;
a second base station configured to communicate with mobile wireless communication devices located in a second geographic area served by a second first base station;
a first data network node for delivering packetized communication content to a mobile wireless communication device when it is located in said first geographic area;
a second data network node for delivering packetized communication content to said mobile wireless communication device when it is located in said second geographic area;
a third data network node serving as a home agent located in a home subnetwork of said mobile wireless communication device for routing packetized communication content from a correspondent node attempting to communicate with said mobile wireless communication device using a home data network address permanently assigned to said mobile wireless communication device to temporary first and second care-of data network addresses respectively associated with said first and second data network nodes;
first means in said third node for routing said packetized communication content to said first node when said mobile wireless communication device is in said first geographic area;
second means in said third node responsive to said first base station initiating a procedure to handoff said mobile wireless communication to said second base station as said mobile wireless communication device travels from said first geographic area to said second geographic area, for routing said packetized communication content to said second node while continuing to route the same packetized communication content to said first node; and
third means in said third node responsive to the completion of said procedure for handing off said mobile wireless communication device to said second base station, for discontinuing the routing of said packetized communication content to said first routing node.
- packetized communication content”
Specification