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1. (WO2005013537) SYSTEMS AND METHODS FOR THE SYNCHRONIZATION OF A REAL-TIME SCHEDULED PACKET NETWORK USING RELATIVE TIMING
Latest bibliographic data on file with the International Bureau   

Pub. No.: WO/2005/013537 International Application No.: PCT/US2004/024325
Publication Date: 10.02.2005 International Filing Date: 28.07.2004
IPC:
H04L 12/28 (2006.01)
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
L
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
12
Data switching networks
28
characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
Applicants: CETACEAN NETWORKS, INC.[US/US]; 100 Arboretum Drive Portsmouth, NH 03801, US (AllExceptUS)
Inventors: WISLER, Dale, J.; US
Agent: SCHURGIN, Stanley, M. ; Weingarten, Schurgin, Gagnebin & Lebovici, LLP Ten Post Office Square Boston, MA 02109, US
Priority Data:
60/490,60928.07.2003US
Title (EN) SYSTEMS AND METHODS FOR THE SYNCHRONIZATION OF A REAL-TIME SCHEDULED PACKET NETWORK USING RELATIVE TIMING
(FR) SYSTEMES ET METHODES POUR LA SYNCHRONISATION D'UN RESEAU DE PAQUETS PROGRAMMES EN TEMPS REEL, AU MOYEN D'UNE SYNCHRONISATION RELATIVE
Abstract:
(EN) A node (102-114) of a real-time scheduled packet network synchronizes an internal frequency reference to a master node (100) by receiving first heartbeat packets that are transmitted by the master node at a predetermined frequency. The node calculates a link phase of a link over which the first heartbeat packets are received by subtracting a time at which the node transmitted a second heartbeat packet to another node from a time at which the node received a first heartbeat packet.
(FR) L'invention concerne un noeud de réseau de paquets programmés en temps réel permettant de synchroniser une référence de fréquence interne sur un noeud principal, par la réception de premiers paquets pulsés transmis par le noeud principal à une fréquence prédéterminée. Le noeud calcule une phase de liaison d'une liaison par laquelle les premiers paquets pulsés sont reçus par la soustraction du moment auquel le noeud a transmis un second paquet pulsé à un autre noeud, au moment auquel le noeud a reçu un premier paquet pulsé.
Designated States: AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BW, BY, BZ, CA, CH, CN, CO, CR, CU, CZ, DE, DK, DM, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, HR, HU, ID, IL, IN, IS, JP, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MA, MD, MG, MK, MN, MW, MX, MZ, NA, NI, NO, NZ, OM, PG, PH, PL, PT, RO, RU, SC, SD, SE, SG, SK, SL, SY, TJ, TM, TN, TR, TT, TZ, UA, UG, UZ, VC, VN, YU, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (EPO) (AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HU, IE, IT, LU, MC, NL, PL, PT, RO, SE, SI, SK, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)