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1. (WO1992010913) CORDLESS TELEPHONE SYSTEM
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1992/010913 International Application No.: PCT/GB1991/002155
Publication Date: 25.06.1992 International Filing Date: 05.12.1991
IPC:
H04M 1/733 (2006.01) ,H04W 76/02 (2009.01) ,H04W 12/06 (2009.01) ,H04W 48/18 (2009.01) ,H04W 84/16 (2009.01)
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
M
TELEPHONIC COMMUNICATION
1
Substation equipment, e.g. for use by subscribers
72
Substation extension arrangements; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selecting
725
Cordless telephones
733
with a plurality of base stations connected to a plurality of lines
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
W
WIRELESS COMMUNICATION NETWORKS
76
Connection management, e.g. connection set-up, manipulation or release
02
Connection set-up
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
W
WIRELESS COMMUNICATION NETWORKS
12
Security arrangements, e.g. access security or fraud detection; Authentication, e.g. verifying user identity or authorisation; Protecting privacy or anonymity
06
Authentication
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
W
WIRELESS COMMUNICATION NETWORKS
48
Access restriction; Network selection; Access point selection
18
Selecting a network or a communication service
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
W
WIRELESS COMMUNICATION NETWORKS
84
Network topologies
02
Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
10
Small scale networks; Flat hierarchical networks
16
WPBX [Wireless Private Branch Exchange]
Applicants:
HUTCHISON PERSONAL COMMUNICATIONS LIMITED [GB/GB]; The Chase John Tate Road Foxholes Business Park Hertford Herts SG13 7NN, GB (AllExceptUS)
MacNAMEE, Robert, Joseph, Gerard [GB/GB]; GB (UsOnly)
Inventors:
MacNAMEE, Robert, Joseph, Gerard; GB
Agent:
BOXALL, Robin, John; Philips Electronic and Associated Industries Limited Patents and Trade Marks Department Philips House, 188 Tottenham Court Road London W1P 9LE, GB
Priority Data:
9026493.805.12.1990GB
Title (EN) CORDLESS TELEPHONE SYSTEM
(FR) SYSTEME DE TELEPHONE SANS FIL
Abstract:
(EN) Several different cordless telephone networks can cover an overall operating area. Each network has its own link identification code (LID) which when transmitted by a portable secondary station is recognised by the primary stations of one of the networks as being its home LID. In order to make better use of the overall system, one or more network operators may agree to handle call requests from one another, however preference is given to the home network. In order to do this, a primary station receiving a call request, checks the LID and, if it is not its home LID but that of a roamer, it waits a predetermined time or number of channel scans before accepting the call request which is processed by a host primary station in a way which is transparent to the secondary station that it is not its home primary station.
(FR) Plusieurs réseaux de téléphone sans fil différents peuvent couvrir une zone de fonctionnement globale. Chaque réseau possède son propre code d'identification de liaison (CIL) qui, lors de sa transmission par un poste secondaire portable est reconnu par les postes principaux de l'un des réseaux comme étant son CIL de base. Afin de profiter pleinement du système global, un ou plusieurs opérateurs de réseau peuvent accepter de traiter des demandes d'appel provenant des autres opérateurs mais la préférence est donnée au réseau de base. Ces demandes d'appel sont traitées de la manière suivante: lorsqu'il reçoit une demande d'appel, un poste principal vérifie le CIL et, s'il ne s'agit pas de son CIL de base mais de celui d'un CIL étranger, il attend une période prédéterminée ou un nombre donné de balayages de canaux avant d'accepter la demande d'appel qui est traitée par un poste principal hôte de manière à ce qu'il soit évident pour le poste secondaire qui'il ne s'agit pas de son poste principal de base.
Designated States: FI, JP, US
European Patent Office (AT, BE, CH, DE, DK, ES, FR, GB, GR, IT, LU, MC, NL, SE)
Publication Language: English (EN)
Filing Language: English (EN)