Source: http://www.google.nl/patents/US6226515
Timestamp: 2018-01-18 14:08:31
Document Index: 199269860

Matched Legal Cases: ['art 1995', 'art 2000', 'art 2007', 'art 2009', 'art 2011', 'art 2012', 'art 2003', 'art 2001']

Patent US6226515 - Cellular cordless telecommunications system - Google Patenten
In order to design a cellular cordless telecommunications system which makes it possible to implement a large number of performance features, for example synchronization, roaming, handover, internal links, hold, check-back, transfer etc. in the cellular cordless telecommunications system without any...http://www.google.nl/patents/US6226515?utm_source=gb-gplus-sharePatent US6226515 - Cellular cordless telecommunications system
Publicatienummer US6226515 B1
Aanvraagnummer US 08/952,608
PCT-nummer PCT/DE1996/000933
Publicatiedatum 1 mei 2001
Aanvraagdatum 29 mei 1996
Prioriteitsdatum 31 mei 1995
Ook gepubliceerd als CN1185885A, EP0829172A2, EP0829172B1, WO1996038990A2, WO1996038990A3
Publicatienummer 08952608, 952608, PCT/1996/933, PCT/DE/1996/000933, PCT/DE/1996/00933, PCT/DE/96/000933, PCT/DE/96/00933, PCT/DE1996/000933, PCT/DE1996/00933, PCT/DE1996000933, PCT/DE199600933, PCT/DE96/000933, PCT/DE96/00933, PCT/DE96000933, PCT/DE9600933, US 6226515 B1, US 6226515B1, US-B1-6226515, US6226515 B1, US6226515B1
Uitvinders Burkhard Pauli, Ralf Neuhaus, Hans-Dieter Ide, Horst Flake, Otger Wewers
Patentcitaties (8), Niet-patentcitaties (8), Verwijzingen naar dit patent (179), Classificaties (41), Juridische gebeurtenissen (4)
US 6226515 B1
1. A cellular cordless telecommunications system comprising:
(a) a large number of cordless base stations which are arranged in radio cells in the cellular cordless telecommunications system and are connected to a wire-based switching center for intercellular telecommunications or telecommunications between cells;
(a1) the switching center having at least one S0 interface for a basic access multi-device line S0; and
(a2) each of the cordless base stations having link means for producing an intercellular telecommunications link or a telecommunications link between cells with an S0 transmitting stage constructed in accordance with a ISO/OSI layer model and with an S0 receiving stage in accordance with the ISO/OSI (International Organization of Standardization/Open Standardization/Open System Interconnection) layer model, the transmitting and receiving stages being connected to the S0 interface via an S0 bus having two B channels and one D channel;
(b) at least one cordless mobile unit which telecommunicates with the cordless base stations;
(c) the cordless base stations, in a master-slave configuration having a master cordless base station and at least one slave cordless base station connected to the S0 interface of the switching center;
(d) the master cordless base station and the at least one slave cordless base station being structured in terms of the link means such that, once a layer 1 of the S0 transmitting stage and of the S0 receiving stage has been set up in accordance with the ISO/OSI layer model, a synchronization message is transmitted between the cordless base stations connected to the S0 interface, on the S0 bus from the master cordless base station to the at least one slave cordless base station.
2. The cellular cordless telecommunications system as claimed in claim 1, wherein the link means of the slave cordless base stations are structured such that a received synchronization message is evaluated, and the slave cordless base station being one of abruptly synchronized or continuously synchronized to the master cordless base station, after this evaluation.
(a) a first data set is identified which initiates transmission of a data frame in accordance with a LAP-D (Link Access Procedure D-Channel) protocol;
(b) a bus-related data word is produced from a second data set in data frame, following the first data set, in accordance with a predetermined generation rule which is predetermined in a standard manner for all the cordless base stations;
(c) a base-station-specific time interval between a starting time of a radio time frame which occurs cyclically for channel related cordless transmission in a radio cell and a time of production of a bus-related data word is detected in a base-station-specific, radio-related data word form,
(d) a base-station-specific synchronization signature is formed from the bus-related data word and from the base-station-specific, radio-related data word, is stored and links S0 bus timing to a base-station-specific radio timing.
15. The cellular cordless telecommunications system as claimed in claim 14, wherein the generation rule is based on polynomial division used to form CRC values.
(a) a radio-related master data word which is transmitted with the received master synchronization signature is compared with the corresponding radio-related data word stored in the receiving slave cordless base station; and
(b) if a difference is found between the data word to be compared, the starting time of the radio time frame indicated by the radio-related data word of the receiving slave cordless based station is corrected in a corresponding manner to the difference found.
18. The cellular cordless telecommunications system as claimed in claim 1, wherein the switching center is structured according to a Euro-ISDN (Euro-Integrated Services Digital Network) Standard.
(a) the cordless base stations in a master-slave configuration having a master cordless base station and at least one slave cordless base station, are connected to the S0 interface of the switching center, a first radio link being set up between the master cordless base station and a first cordless mobile unit during intercellular telecommunications or telecommunications between cells;
(b) the first cordless mobile unit is structured such that a second radio link to a second cordless base station is set up in the background and is useable as a telecommunications link during the intercellular telecommunications or telecommunications between cells;
(c) the switching center has a service feature “terminal portability”;
(d) the ink means for producing the intercellular telecommunications link or telecommunications link between cells as well as the switching center are structured such that, if radio quality of the second radio link is better than or equal to radio quality of the first radio link, the service feature “terminal portability”, which is available in the switching center, is utilized such that the second radio link serves as a new telecommunications link during the intercellular telecommunications or telecommunications between cells.
20. The cellular cordless telecommunications system as claimed in claim 1, wherein
(a) the cordless base stations in a master-slave configuration having a master cordless base station and at least one slave cordless base station, are connected to the S0 interface of the switching center, a first radio link being set up between the master cordless station and the first cordless mobile unit during intercellular telecommunications or telecommunications between cells;
(b) the first cordless mobile unit is structured such that a second radio link to the second cordless base station is set up in the background and is useable as a telecommunications link during the intercellular telecommunications or telecommunications between cells;
(c) the master cordless base station and the at least one slave cordless base station are structured in terms of the link means such that a handover-relevant message is transmitted local intercommunication between the cordless base stations connected to the S0 interface, on the S0 bus from the master cordless base station to the at least one slave cordless base station.
21. The cellular cordless telecommunications system as claimed in claim 20, wherein the master cordless base station is structured in terms of the link means such that the message transmitted by the master cordless base station is also received and evaluated by the master cordless base station.
(a1) the switching center having at least one S0 interface; and
(a2) each of the cordless base stations having link means for producing an intercellular telecommunications link or a telecommunications link between cells with an S0 transmitting stage constructed in accordance with a ISO/OSI layer model and with an S0 receiving stage in accordance with the ISO/OSI layer model, transmitting and receiving stages being connected to the S0 interface via an S0 bus having two B channels and one D channel;
(c) the switching center structured according to a Euro-ISDN Standard;
(d) the cordless base stations in a master-slave configuration having a master cordless base station and at least one slave cordless base station, connected to the S0 interface of the switching center, a first radio link being set up between the master cordless base station and a first cordless mobile unit as a telecommunications link during intercellular telecommunications or telecommunications between cells;
(e) the first cordless mobile unit structured such that a second radio link to a second cordless base station is set up in the background and is useable as a telecommunications link during the intercellular telecommunications or telecommunications between cells;
(f) the switching center having a service feature “terminal portability”;
(g) the link means for producing the intercellular telecommunications link or telecommunications link between cells as well as the switching center structured such that, if radio quality of the second radio link is better than or equal to radio quality of the first radio link, the service feature “terminal portability”, which is available in the switching center, is utilized such that the second radio link serves as a new telecommunications link during the intercellular telecommunications or telecommunications between cells.
36. The cellular cordless telecommunication system as claimed in claim 35, wherein the system further comprises a cordless base station having link means for producing an intercellular telecommunications link or a telecommunications link between cells, having an S0 transmitting stage structured in accordance with the ISO/OSI layer model, and having an S0 receiving stage in accordance with the ISO/OSI layer model, which stages are connectable to an S0 interface of the switching center via an S0 bus having two B channels and one D channel.
(b) at least one cordless mobile unit which is capable of telecommunications with the cordless base stations;
(c) the cordless base stations in a master-slave configuration having a master cordless base station and at least one slave cordless base station connected to the S0 interface of the switching center, a first radio link being set up between the master cordless base station and a first cordless mobile unit in the course of intercellular telecommunications or telecommunications between cells;
(d) the first cordless mobile unit structured such that a second radio link to a second cordless base station is set up in the background and is utilized as a telecommunications link during the intercellular telecommunications or telecommunications between cells;
(e) the master cordless base station and the at least one slave cordless base station being structured in terms of the link means such that a handover-relevant message is transmitted during local intercommunication between the cordless base stations connected to the S0 interface, on the S0 bus from the master cordless base station to the at least one slave cordless base station.
40. The cellular cordless telecommunication system as claimed in claim 39, wherein the system further comprises a cordless base station having link means for producing an intercellular telecommunications link or a telecommunications link between cells, having an S0 transmitting stage structured in accordance with the ISO/OSI layer model, and having an S0 receiving stage in accordance with the ISO/OSI layer model, which stages are connectable to an S0 interface of the switching center via an S0 bus having two B channels and one D channel.
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Classificatie in de VS 455/426.1, 455/560, 370/329, 455/561, 370/524, 455/462, 455/555, 455/502, 370/350
Internationale classificatie H04B7/26, H04M1/733, H04Q11/04, H04W48/16, H04W36/18
Coöperatieve classificatie H04Q2213/1332, H04W48/16, H04Q2213/098, H04Q11/0457, H04Q2213/1336, H04M1/733, H04W36/18, H04Q2213/1328, H04Q2213/13322, H04Q2213/13106, H04Q2213/298, H04Q2213/13209, H04J3/0638, H04Q2213/13299, H04Q2213/13098, H04Q2213/1322, H04Q2213/1326, H04B7/2693, H04M2250/08, H04Q2213/13282, H04B7/269, H04Q11/0471, H04Q2213/13202
Europese classificatie H04M1/733, H04Q11/04S1T, H04Q11/04S1P, H04B7/26V6D6B
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:PAULI, BURKHARD;NEUHAUS, RALF;IDE, HANS-DIETER;AND OTHERS;REEL/FRAME:009079/0810;SIGNING DATES FROM 19960530 TO 19960619
2 mei 2005 LAPS Lapse for failure to pay maintenance fees
28 juni 2005 FP Expired due to failure to pay maintenance fee