Patents by Inventor Philippe Charas
Philippe Charas has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 7409704Abstract: A telecommunications system and method is disclosed for implementing a Policy Enforcement Point (PEP) for an Internet Service Provider (ISP) at the subscriber premises. This PEP enforces policies with respect to authentication of subscribers, authorization to access and services, accounting and mobility of the subscribers. These policies are defined by the ISP operator in a Policy Decision Point (PDP), which is a server connected to the Internet that communicates with the PEP. In addition, the ISP can supply an encryption key for the PEP and an encryption key for a particular subscriber. Thus, all communications between the subscriber and the PEP, as well as between the PEP and the PDP can be encrypted.Type: GrantFiled: July 15, 1999Date of Patent: August 5, 2008Assignee: Telefonaktiebolaget L M Ericsson (PUBL)Inventor: Philippe Charas
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Patent number: 6965948Abstract: A method and apparatus for providing selective access to a network, between an end device and a network such as the Internet through one or more access network terminating devices includes determining an access capability for each access network terminating device and comparing the access capability with a preferred access capability associated with a user preference. Best access is determined based on a comparison of the capabilities of the access network terminating devices and the preferred capabilities. Once a match is found, one of the access network terminating devices is selected based on the comparison and the end device is configured according to the access capability of the selected one of the access network terminating devices. Access capabilities include, for example, cost of access, coverage area, and QoS. While communicating with the network the end device continues to detect if new access network terminating devices are available.Type: GrantFiled: November 12, 1999Date of Patent: November 15, 2005Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventors: Mats Eneborg, Annika Jonsson, Andras Valko, Tony Larsson, Martin Körling, Philippe Charas
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Patent number: 6781960Abstract: A multi-point to multi-point system includes a plurality of multi-point nodes. Each of the multi-point nodes includes a transmitter that broadcasts over at least one sector, a receiver that receives broadcasts over the sectors, a router, and a memory. Sector identifiers corresponding to each sector are stored in the memory and broadcast over their respective sectors. A link routing table is stored in the memory and is used to inform the router of available communication paths for the multi-point node based on receipt of at least one sector identifier from another multi-point node. A root multi-point node that communicates with at least one of the multi-point nodes includes a memory that stores at least one sector identifier. The sector identifier is communicated to at least one of multi-point nodes. A root node link routing table is stored in the memory that includes contents of link routing tables from all of the plurality of multi-point nodes.Type: GrantFiled: February 16, 2000Date of Patent: August 24, 2004Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventor: Philippe Charas
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Publication number: 20030206533Abstract: The present invention relates to a mobile terminal and a repository for providing access independent global roaming between heterogeneous networks. The invention solves this problem and provides policy enforcement and service transparency when terminals roam between different heterogeneous networks. By providing a policy enforcement point associated with the terminal, and by concerning the transport mechanism between terminals and servers as a packet pipe, adding no extra value except transport and Quality of Service classification thereof. The payment for access and services can be separated and access may be paid in real-time by an anonymous payment method. In accordance with the invention, the terminal becomes more like a personal profile manager, managing rights to services and access. The ability to purchase access opens the possibility for the terminal to act as an e-commerce platform, and the subscriber can access any network any time since access is paid for in real time.Type: ApplicationFiled: January 15, 2001Publication date: November 6, 2003Inventor: Philippe Charas
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Patent number: 6549531Abstract: A Time Division Multiple Access (TDMA) radio communication system, comprising radio access units or radio base stations arranged to provide duplex radio communication with remote radio communication devices in geographically limited areas or cells through a plurality of receive and transmit time slots grouped in frames. The radio communication system is arranged to provide radio communication in a cell through a limited subset of the plurality of receive and transmit time slots of a frame. In a radio communication system comprising a multiple of RF carriers, the system may be arranged to provide radio communication in a cell through a limited subset of said plurality of receive and transmit time slots of frames at different carriers.Type: GrantFiled: May 17, 1999Date of Patent: April 15, 2003Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventor: Philippe Charas
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Patent number: 6400937Abstract: A radio local loop (RLL) system which can automatically reallocate fixed subscriber units to a different radio domain without expending the costly and time consuming efforts needed to manually readjust antennas. By transmitting a code to the fixed subscriber unit, whereby the code identifies a second radio domain, an antenna associated with the fixed subscriber unit automatically adjusts such that said subscriber unit can communicate with the second domain using a radio channel. While the scan angle of the antenna is adjusted, the fixed subscriber unit derives a signal quality value for a number of radio channels. Based on the signal quality values, the RLL system determines whether the second radio domain exhibits superior signal quality characteristics as compared to the first radio domain. If the second radio domain exhibits superior signal quality characteristics than the first radio domain, the fixed subscriber unit is reallocated to the second domain.Type: GrantFiled: March 16, 1999Date of Patent: June 4, 2002Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventors: Philippe Charas, Sten Blomstergren
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Publication number: 20020056002Abstract: The present invention relates to methods for providing access independent global roaming between heterogeneous networks. The invention solves this problem and provides policy enforcement and service transparency when terminals roam between different heterogeneous networks, By providing a policy enforcement point associated with the terminal, and by concerning the transport mechanism between terminals and servers as a packet pipe, adding no extra value except transport and Quality of Service classification thereof. The payment for access and services can be separated and access may be paid in real-time by an anonymous payment method. In accordance with the invention, the terminal becomes more like a personal profile manager, managing rights to services and access. The ability to purchase access opens the possibility for the terminal to act as an e-commerce platform, and the subscriber can access any network any time since access is paid for in real time.Type: ApplicationFiled: January 15, 2001Publication date: May 9, 2002Inventor: Philippe Charas
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Patent number: 6381462Abstract: A radio local loop system which uses an improved dynamic channel selection scheme whereby the fixed subscriber units can automatically select the available traffic channel that exhibits the best signal quality characteristics for establishing a connection. The radio system has fixed subscriber units which measure received signals from radio stations and determine a signal quality factor for each received signal. The fixed subscriber units will create and maintain a traffic channel register that stores the frequency, time slot, radio station number, and fixed subscriber unit integer scan angle for each signal. The fixed subscriber units are assigned an available radio channel and antenna scan angle based upon the signal quality.Type: GrantFiled: March 16, 1999Date of Patent: April 30, 2002Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventor: Philippe Charas
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Patent number: 5991630Abstract: A radio access unit for establishing radio link connections with a plurality of geographically spread remote telecommunication units. The radio access unit comprises radio access modules and antenna means (46), operatively connected to provide a plurality of common radio communication channels in directionally separated transmission sectors (66-71). The radio access modules are arranged for adaptively selecting a free communication channel amongst the plurality of common radio channels in a transmission sector (66-71); i.e. Dynamic Channel Allocation (DCA). The selected channel is individual to a radio link connection in such transmission sector (66-71). The radio access unit can be used in Radio in the Local Loop (RLL) applications and cellular overlay multicell mobile communication networks.Type: GrantFiled: May 14, 1997Date of Patent: November 23, 1999Assignee: Telefonaktiebolaget LM EricssonInventor: Philippe Charas
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Patent number: 5862459Abstract: An improved feed-forward multi carrier power amplifier architecture is described along with a novel array antenna wherein the improved amplifier may be advantageously put to use. The improved amplifier provides for independent control of unwanted intermodulation products generated in the amplifier. When used in the novel array structure, a separate radiation lobe containing the unwanted intermodulation products may be steered independently from a main radiation lobe. In a cellular base station application, the radiation lobe containing the unwanted intermodulation products may be steered away from the main radiation lobe thereby providing spatial filtering of the unwanted signals. The radiation lobe containing the unwanted intermodulation products may be steered rapidly in time using, for example, a noise like function to provide statistical averaging of the interference in the direction of desired communications.Type: GrantFiled: August 27, 1996Date of Patent: January 19, 1999Assignee: Telefonaktiebolaget LM EricssonInventor: Philippe Charas
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Patent number: 5613225Abstract: A radio module for a radio base station of a mobile radio system which transmits and receives radio signals from stationary or moving mobile radio stations over given frequencies. A module comprises an antenna part and a transceiver part of given mechanical construction. Each module of a base station transmits and receives over a given specific frequency which may be different when transmitting and receiving but which is not the same frequency as that used by any other module in the station. A radio base structure is comprised of a plurality of modules, each having its own specific or individual transmitting and receiving frequency and being provided with suppression means which prevent a module from disturbing neighboring modules. A radio base structure having diversity reception is also provided.Type: GrantFiled: November 9, 1993Date of Patent: March 18, 1997Assignee: Telefonaktiebolaget LM EricssonInventor: Philippe Charas
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Patent number: 5603080Abstract: A repeater system in a communication system including a base station and a mobile unit provides a communications link between the base station and the mobile unit when the mobile unit is located in an environment that is substantially closed off to high radio frequency communication between the base station and the mobile unit. The repeater system has a first linear two-way frequency converter including a high frequency port for two-way coupling to the base station and a low frequency port for two-way coupling to a low frequency signal that is capable of distributing radio frequency power through the closed environment. The low frequency port is connected to a cable which propagates and receives low radio frequency power within the closed environment.Type: GrantFiled: October 13, 1994Date of Patent: February 11, 1997Assignee: Telefonaktiebolaget LM EricssonInventors: Stefan E. P. Kallander, Philippe Charas
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Patent number: 5404570Abstract: A repeater system in a communication system including a base station and a mobile unit provides a communications link between the base station and the mobile unit when the mobile unit is located in an environment that is substantially closed off to high radio frequency communication between the base station and the mobile unit. The repeater system has a first linear two-way frequency converter including a high frequency port for two-way coupling to the base station and a low frequency port for two-way coupling to a low frequency signal that is capable of distributing radio frequency power through the closed environment. The low frequency port is connected to a cable which propagates and receives low radio frequency power within the closed environment.Type: GrantFiled: November 23, 1992Date of Patent: April 4, 1995Assignee: Telefonaktiebolaget L M EricssonInventors: Philippe Charas, Stefan Kallander