METHOD AND APPARATUS FOR CIPHERING PACKET UNITS IN WIRELESS COMMUNICATIONS
First Claim
1. A method to process a packet unit (PU) in a radio link control (RLC) layer for transmission, the method comprising:
- buffering the PU;
re-segmenting of the PU in the buffer;
performing a ciphering process on the PU or the re-segmented PU; and
transmitting the ciphered and re-segmented PU.
1 Assignment
0 Petitions
Accused Products
Abstract
A method and apparatus are disclosed relating to ciphering and de-ciphering of packet units in wireless devices during retransmission in wireless communications. The packet units are re-segmented with the ciphering done on the re-segmented packet unit or on a radio link control protocol data unit (RLC PDU) with or without segmentation. Alternatively, the re-segmentation is done on the radio link control service data unit (RLC SDU) with or without segmentation. Alternatively, the ciphering process and multiplexing of the RLC PDU is done in the medium access control (MAC) layer of a MAC PU before undergoing a hybrid automatic repeat request (HARQ) process for retransmission. Further, the ciphering process in the RLC is done on a packet data convergence protocol packet data unit (PDCP PDU).
-
Citations
75 Claims
-
1. A method to process a packet unit (PU) in a radio link control (RLC) layer for transmission, the method comprising:
-
buffering the PU; re-segmenting of the PU in the buffer; performing a ciphering process on the PU or the re-segmented PU; and transmitting the ciphered and re-segmented PU. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
-
-
19. A method to process a packet unit (PU) in a radio link control (RLC) layer for transmission, the method comprising:
-
performing a ciphering process on an upper layer PU in the RLC layer or in an RLC module/implementation to generate the RLC PU buffering the RLC PU; re-segmenting of the RLC PU in the buffer; and transmitting re-segmented RLC PU. - View Dependent Claims (20, 21, 22, 24, 25, 26, 28, 29, 31, 32, 34, 35)
-
-
23. The method of 21 wherein the upper layer PU comprises:
a packet data convergence protocol packet data unit (PDCP PDU) payload, whereby the PDU payload without a PDCP PDU header is ciphered using a ciphering process that utilizes the HFN and the SN, and the SN comprises a PDCP PDU SN. - View Dependent Claims (27, 30, 33)
-
36. A method to process a medium access control (MAC) packet unit (PU) for transmission, the method comprising:
-
buffering the MAC PU; performing a MAC ciphering process on the MAC PU; and transmitting the ciphered MAC PU. - View Dependent Claims (37, 38, 39, 40, 41, 42)
-
-
43. A wireless transmit/receive unit (WTRU), the WTRU comprising:
-
a processor to store at least one packet unit (PU), the processor configured to re-segment the PU and perform a ciphering process on the PU or the re-segmented PU, and provide a signal including the processed PU; and a transmitter configured to transmit the signal. - View Dependent Claims (44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57)
-
-
58. A wireless transmit/receive unit (WTRU), the WTRU comprising:
-
a processor configured to perform ciphering on an upper layer packet unit (PU) in a radio link control (RLC) layer or on an upper layer PU in an RLC module/implementation to generate an RLC PU; the processor storing the RLC PU, re-segmenting the RLC PU and providing a signal including the processed RLC PU; and a transmitter configured to transmit the signal. - View Dependent Claims (59, 60, 61, 63, 64, 65, 67, 68, 70)
-
-
62. The WTRU of 60 wherein the upper layer PU comprises:
a packet data convergence protocol packet data unit (PDCP PDU) payload, whereby the PDU payload without a PDCP PDU header is ciphered using a ciphering process that utilizes the HFN and the SN, and the SN comprises a PDCP PDU SN. - View Dependent Claims (66, 69)
-
71. A wireless transmit/receive unit (WTRU), the WTRU comprising:
-
a processor configured to perform a medium access control (MAC) ciphering process on a MAC packet unit (PU); the processor storing the MAC PU and providing a signal including the processed MAC PU; and a transmitter configured to transmit the signal. - View Dependent Claims (72, 73, 74, 75)
-
Specification