Method for synchronizing a start value for security in a...

Details Method for synchronizing a start value for security in a... Method for synchronizing a start value for security in a...

2007-08-07

2007-08-07

To, Doris H. (Department: 2616)

Multiplex communications

Communication techniques for information carried in plural...

Combining or distributing information via time channels

C370S331000, C455S436000

Reexamination Certificate

active

10064204

ABSTRACT:
A UTRAN sends a Radio Bearer Setup message to a UE, which indicates that SRNS relocation is to be performed and that a new RB is to be established in a first domain. The UE receives the Radio Bearer Setup message and assigns a first START value to a START_VALUE_TO_TRANSMIT variable according to the HFNs of all established RBs in the first domain. The UE the generates a START list containing entries corresponding all domains, including the first domain. The UE fills the entries with corresponding START values, synchronizing the entry corresponding to the first domain to hold a value that is identical to the value of the START_VALUE_TO_TRANMIT variable. The UE then composes a reply message that includes the START list, and sends the reply message to the UTRAN. The UE utilizes the START_VALUE_TO_TRANSMIT variable to set an HFN of the new RB. In a second embodiment, the response message includes both the START list and the START_VALUE_TO_TRANMIT variable. The START list is applied to all RBs but the new RB. The START_VALUE_TO_TRANMIT variable is applied to the new RB.

REFERENCES:
patent: 6925298 (2005-08-01), Ho
patent: 2003/0235231 (2003-12-01), Rincon et al.
patent: 2003/0236085 (2003-12-01), Ho
3GPP TS 25.331 V3.10.0 (Mar. 2002) 3rd Generation Partnership Project; Technical Specification Group Radio Access Network; Radio Resource Control (PRC); Protocol Specification (Release 1999).
3GPP TS 25.322 V3.10.0 (Mar. 2002) 3rd Generation Partnership Project; Technical Specification Group Radio Access Network; Radio Link Control (RLC) protocol specification (Release 1999).

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