CN101199158B

5G,4G

Title

Method and apparatus for ciphering and re-ordering packets in a wireless communication system

Application Number:

CN20068021929

Publication Date:

20-06-2012

Current Assignee:

Family ID:

Application Date:

26-04-2006

Declaring Company:

Publication Country:

US

Priority Date:

26-04-2005

Title

Method and apparatus for ciphering and re-ordering packets in a wireless communication system

Application Number:

CN20068021929

Family ID:

Publication Country:

US

Publication Date:

20-06-2012

Application Date:

26-04-2006

Priority Date:

26-04-2005

Current Assignee:

Declaring Company:

Abstract  Abstract

The invention claims techniques for using a single full sequence number for executing encryption and reordering techniques. the input packet is encrypted to obtain the encrypted packet transmitter wherein encrypting each of the full sequence number for the input packet. the transmitter generates output packets for the ciphered packets wherein each output packet comprises means for reordering and from derived partial sequence number for the full sequence number. The full sequence number may be incremented for each byte of each input packet or each packet. the partial sequence number is used as a sequence number for RLC and may be used for re-ordering duplicate detection error correction and/or other functions. the receiver performs the complementary processing the partial sequence number included in each packet based on the received packet can be reordered and using the partial sequence number included in each received packet of the packet of the received decryption.

Techniques for performing ciphering and re-ordering using a single full sequence number are described. A transmitter ciphers input packets to obtain ciphered packets with each input packet being ciphered with a full sequence number. The transmitter generates output packets for the ciphered packets with each output packet including a partial sequence number used for re-ordering and derived from the full sequence number. The full sequence number may be incremented for each input packet or each byte of each packet. The partial sequence number may be used as a sequence number for RLC and may be used for re-ordering duplicate detection error correction and/or other functions. A receiver performs the complementary processing re-orders received packets based on the partial sequence number included in each packet and deciphers the received packets using the partial sequence number included in each received packet.

Note:

The information in blue was extracted from the third parties (Standard Setting Organisation, Espacenet)

The information in grey was provided by the patent holder

The information in purple was extracted from the FrandAvenue

Explicitly disclosed patent:openly and comprehensibly describes all details of the invention in the patent document.

Implicitly disclosed patent:does not explicitly state certain aspects of the invention, but still allows for these to be inferred from the information provided.

Basis patent:The core patent in a family, outlining the fundamental invention from which related patents or applications originate.

Family member:related patents or applications that share a common priority or original filing.