Secure candidate access router discovery method and system
AssigneeNEC Laboratories America, Inc.
InventorsEunsoo Shim, Jens-Peter Redlich, Richard D. Gitlin
Life of this patent
Estimating the term…
Abstract
Security mechanisms are disclosed that protect the integrity of the candidate access node discovery procedures in a mobile communication network. In accordance with an aspect of the invention, an access node stores information on candidate access nodes in the mobile communication network and updates the information only after verifying information provided by a mobile terminal after a handoff from one access node to another access node. In accordance with another aspect of the invention, the information on candidate access nodes in the mobile communication network are associated with a particular mobile terminal and stored at the mobile terminal in a candidate access node list.
Claims31
A method of secure discovery of access nodes in a mobile communication network comprising the steps of:
- providing a mobile terminal with information identifying a first access node prior to handoff to another access node;
- after handoff of the mobile terminal to a second access node, receiving at the first access node a message from the second access node requesting verification of information provided by the mobile terminal to the second access node;
- and
- verifying the information provided by the mobile terminal to the second access node before updating information on candidate access nodes in the mobile communication network.
An access node comprising memory for storing information on candidate access nodes in a mobile communication network and a processor that executes device-readable instructions for performing the steps of:
- providing a mobile terminal with information identifying the access node prior to handoff to another access node;
- after handoff of the mobile terminal to a second access node, receiving a message from the second access node requesting verification of information provided by the mobile terminal to the second access node;
- and
- verifying the information provided by the mobile terminal to the second access node before updating the information on candidate access nodes in the mobile communication network.
A mobile terminal comprising memory and a handoff processing circuit that performs the steps of:
- prior to handoff to another access node, receiving information identifying a first access node and a ticket generated by the first access node;
- storing the ticket and the information identifying the first access node in the memory;
- after handoff to a second access node, providing the ticket and the information identifying the first access node to the second access node, so that the second access node can verify the ticket with the first access node prior to updating information on candidate access nodes in the mobile communication network.
A method of secure discovery of access nodes in a mobile communication network comprising the steps of:
- receiving from a mobile terminal a candidate access node list associated with and stored at the mobile terminal;
- updating the candidate access node list associated with the mobile terminal to reflect candidate access nodes discovered by the mobile terminal in the mobile communication network;
- and
- providing the mobile terminal with the updated candidate access list associated with the mobile terminal.
An access node comprising memory for storing information on candidate access nodes in a mobile communication network and a processor that executes device-readable instructions for performing the steps of:
- receiving from a mobile terminal a candidate access node list associated with and stored at the mobile terminal;
- updating the candidate access node list associated with the mobile terminal to reflect candidate access nodes discovered by the mobile terminal in the mobile communication network;
- and
- providing the mobile terminal with the updated candidate access list associated with the mobile terminal.
A mobile terminal comprising memory for storing a candidate access node list and a handoff processing circuit that performs the steps of:
- providing to an access node in a mobile communication network the candidate access node list associated with the mobile terminal;
- receiving from the access node an updated candidate access node list that reflects candidate access nodes discovered by the mobile terminal in the mobile communication network;
- and
- storing the updated candidate access node list in the memory.
Dependencies are inferred from the claim text.