Source: https://patents.google.com/patent/US8121293B2/en
Timestamp: 2019-10-17 11:23:42
Document Index: 304348138

Matched Legal Cases: ['Application No. 2', 'Application No. 2', 'Application No. 01819644', 'Application No. 01', 'Application No. 01', 'Application No. 20002613', 'Application No. 20010282', 'Application No. 2002', 'Application No. 2002', 'Application No. 2002', 'Application No. 2007', 'Application No. 10', 'Application No. 10', 'Application No. 10', 'Application No. 10', 'Application No. 10']

US8121293B2 - System for ensuring encrypted communication after handover - Google Patents
US8121293B2
US8121293B2 US12/213,618 US21361808A US8121293B2 US 8121293 B2 US8121293 B2 US 8121293B2 US 21361808 A US21361808 A US 21361808A US 8121293 B2 US8121293 B2 US 8121293B2
US12/213,618
US20080267405A1 (en
2000-11-28 Priority to FI20002613A priority Critical patent/FI20002613A0/en
2000-11-28 Priority to FI20002613 priority
2001-11-06 Priority to US10/013,257 priority patent/US7403621B2/en
2008-06-23 Priority to US12/213,618 priority patent/US8121293B2/en
2008-06-23 Application filed by Nokia Oyj filed Critical Nokia Oyj
2008-10-30 Publication of US20080267405A1 publication Critical patent/US20080267405A1/en
2009-10-22 First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=26161088&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=US8121293(B2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
2012-02-21 Publication of US8121293B2 publication Critical patent/US8121293B2/en
2015-01-29 Assigned to NOKIA CORPORATION reassignment NOKIA CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: NIEMI, VALTTERI, VIALEN, JUKKA
FIG. 1 shows with a simplified block diagram a GSM (Global System for Mobile communications) network and a UMTS network. The main parts of the network are user terminals 100 and a network part that comprises the GSM base station subsystem BSS 105 and the UMTS terrestrial radio access network UTRAN 101 (which is a wideband multiple access radio network currently being specified in the 3GPP (Third Generation Partnership Project)) and a core network CN 104. The radio interface between a user terminal and the UTRAN is called Uu and the interface between the UTRAN and the 3G core network is called Iu. The interface between the GSM base station subsystem BSS and general packet radio service GPRS core network is called Gb and interface between the GSM base station subsystem BSS and GSM core networks is called A. The user terminals can be multi-mode terminals, which can operate using at least two radio access technologies, in this example UMTS and GSM. The UTRAN consists of a radio network subsystems RNS 102 that further consists of radio network controller RNC 103 and one or more nodes B (not shown in FIG. 1). An interface between two RNS is called Iur. The interface between the user terminal and the GSM base station subsystem BSS is simply called “Radio Interface”. The GSM base station subsystem BSS consists of the base station controllers BSC 106 and the base transceiver stations BTS 107. The core network nodes, e.g. the (GSM) Mobile Switching Center MSC and the (GPRS) serving GPRS support node SGSN, can be capable of controlling both types of radio access networks—UTRAN and BSS. Another possible network configuration is such that each radio access network (UTRAN and BSS) has its own controlling core network node, MSC and SGSN, respectively—2G MSC, 2G SGSN and 3G MSC, 3G SGSN—but all these core network elements are connected to one and the same home location register HLR (not shown in FIG. 1), which contains all static user information, e.g. the billing of users can be controlled from one location even when the user terminals are able to operate via several different radio access networks.
a transmitter configured to send to a first radio access network an unprotected signaling message identifying encryption algorithms supported by a multimode mobile station in a second radio access network;
a receiver configured to receive from the first radio access network an integrity protected command message identifying said encryption algorithms supported by the multimode mobile station in the second radio access network, said integrity protected command message comprising a payload and a message authentication code; and
a processor configured to conclude whether identification of said encryption algorithms in said integrity protected command message corresponds to identification of said encryption algorithms in said unprotected signaling message.
said unprotected signaling message identifying encryption algorithms supported by a multimode mobile station in the second radio access network includes GSM classmark information relating to the security capability of the multimode mobile station in the second radio access network; and wherein
said integrity protected command message identifying said encryption algorithms supported by the multimode mobile station in the second radio access network includes said GSM classmark information relating to the security capability of the multimode mobile station in the second radio access network; and wherein
said processor is configured to conclude whether said identifications of said encryption algorithms in the sent unprotected and received integrity protected messages, respectively, correspond by determining whether said GSM classmark information in the sent unprotected and received integrity protected messages, respectively, match.
37. The apparatus of claim 36, wherein said first radio access network is a UMTS network and said second radio access network is a GSM network; and wherein
said unprotected signaling message identifying encryption algorithms supported by a multimode mobile station in the second radio access network further includes UE security capability information relating to the security capability of the multimode mobile station in the first radio access network; and wherein
said integrity protected command message identifying said encryption algorithms supported by the multimode mobile station in the second radio access network further includes said UE security capability information relating to the security capability of the multimode mobile station in the first radio access network; and wherein
said processor is configured to conclude whether said respective identifications of said encryption algorithms correspond by determining whether said GSM classmark information in the sent unprotected and received integrity protected messages, respectively is the same and whether said UE security capability information in the sent unprotected and received integrity protected messages, respectively, match.
38. The apparatus of claim 36, wherein said GSM classmark information is used in calculating said message authentication code.
US12/213,618 2000-11-28 2008-06-23 System for ensuring encrypted communication after handover Active 2022-06-25 US8121293B2 (en)
US10/013,257 US7403621B2 (en) 2000-11-28 2001-11-06 System for ensuring encrypted communication after handover
US12/213,618 US8121293B2 (en) 2000-11-28 2008-06-23 System for ensuring encrypted communication after handover
US10/013,257 Continuation US7403621B2 (en) 2000-11-28 2001-11-06 System for ensuring encrypted communication after handover
US20080267405A1 US20080267405A1 (en) 2008-10-30
US8121293B2 true US8121293B2 (en) 2012-02-21
US10/013,257 Active 2025-06-04 US7403621B2 (en) 2000-11-28 2001-11-06 System for ensuring encrypted communication after handover
US12/213,618 Active 2022-06-25 US8121293B2 (en) 2000-11-28 2008-06-23 System for ensuring encrypted communication after handover
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