Title:
ＨＦＮオフセットを用いてユーザ機器を同期するための方法および装置
Document Type and Number:
Japanese Patent JP6776235
Kind Code:
B2
Abstract:
Methods, systems, and devices are described for wireless communication at a user equipment (UE). In some examples, the UE may identify an initialization and refresh (IR) packet at the radio link control (RLC) layer based the size of the IR packet, where the IR packet comprises a larger ciphered PDU size than a compressed RoHC packet. Accordingly, once the UE identifies the received packet as an IR packet, the UE may attempt to decipher the IR packet using one or more HFN offset values. In one example, the UE may determine whether the IR packet is deciphered correctly based on cyclic redundancy check (CRC) value of the deciphered IR packet. As a result, the present disclosure allows the UE to re-synchronize with the transmitting device by at least one of incrementing or decrementing an HFN value at the receiving device.
Inventors:
Bressanelli, Dominique Francois
Basswal, Saket
Xiao, Gun Andy
Maheshwari, Shiresh
Basswal, Saket
Xiao, Gun Andy
Maheshwari, Shiresh
Application Number:
JP2017526649A
Publication Date:
October 28, 2020
Filing Date:
November 20, 2014
Export Citation:
Assignee:
QUALCOMM INCORPORATED
International Classes:
H04W12/04; H04W28/04; H04W28/06; H04W56/00
Domestic Patent References:
| JP2006217100A | ||||
| JP2008154246A | ||||
| JP2010199750A | ||||
| JP2012533213A | ||||
| JP2009219127A | ||||
| JP2007538455A | ||||
| JP2010199750A | ||||
| JP2002344429A |
Other References:
Qualcomm Incorporated,Discussion on HFN de-synchronization and its impact to a VoLTE call[online],3GPP TSG-RAN WG2#87 R2-143728,2014年8月9日掲載,インターネット
Attorney, Agent or Firm:
Kurata Masatoshi
Morisezo Iseki
Takashi Okada
Morisezo Iseki
Takashi Okada