Patents by Inventor Abdennaceaur Lachtar
Abdennaceaur Lachtar 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: 8983526Abstract: An Optimized Streetlight Operation (OSLO) system that utilizes a cellular network overlay to broadcast control commands issued by a centralized Streetlight Operation Center (SOC) to RF control modules mounted on each streetlight pole. The cellular network may be a CDMA network utilizing Short Message Service-Broadcast (SMS-B) messaging. When a Mobile Telephone Exchange/Mobile Switching Center (MTX/MSC) receives a SOC control command from the SOC, the MTX/MSC causes a plurality of BSs to broadcast the SOC command in the network operating area a defined number of times. Each RF control module that successfully receives the broadcast SOC control command, performs actions to control operation of the module's associated streetlight, and transmits a confirmation message to the module's serving BS indicating the SOC command was received. The modules are configured to stagger transmission of the confirmation messages over a period of time to reduce a peak load imposed on the cellular network.Type: GrantFiled: August 30, 2012Date of Patent: March 17, 2015Assignee: Telefonaktiebolaget L M Ericsson (publ)Inventors: Pulin Chhatbar, Miroslav Budic, Abdennaceaur Lachtar, Ravindra Dongre, Gheorghe Spiride
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Patent number: 8694018Abstract: A method and apparatus for controlling a Network Load Balancing (NLB) algorithm that balances a traffic load between multiple downlink (DL) sectors in a cellular telecommunication network. A Connection Integrity Preservation (CIP) algorithm, which runs on top of the NLB algorithm in the Radio Network Controller/Base Station Controller (RNC/BSC), minimizes the risk of degrading network performance due to NLB offload decisions. The CIP algorithm may override an NLB offload decision, for example, if there have been too many offload failures, there are no target DL sectors available to acquire an offloaded Access Terminal (AT), or the offloaded AT is not acquired within a threshold time period. The CIP algorithm ensures required metrics are collected, and minimizes the impact on RNC/BSC processing due to Routing Update messages needed to make offload decisions. The invention enables the NLB algorithm to realize its potential without negative side-effects.Type: GrantFiled: June 16, 2011Date of Patent: April 8, 2014Assignee: Telefonaktiebolaget L M Ericsson (Publ)Inventors: Miroslav Budic, Abdennaceaur Lachtar, Narendra Tilwani, Pulin Chhatbar
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Patent number: 8675606Abstract: A base station that supports different sectors and co-located different frequencies across the different sectors in a CDMA network having an Access Terminal includes a processing unit which determines a load imbalance on a connection in a first sector at a first frequency. The base station includes a network interface unit through which the processing unit offloads traffic from the connection in the first sector at the first frequency to a first or second sector at a second frequency. A method for sending traffic with a base station that supports different sectors and co-located different frequencies across the different sectors in a CDMA network having an Access Terminal including the steps of determining with a processing unit a load imbalance on a connection in a first sector at a first frequency. There is the step of offloading with the processing unit through network interface unit traffic from the connection in the first sector at the first frequency to a first or second sector at a second frequency.Type: GrantFiled: September 8, 2011Date of Patent: March 18, 2014Assignee: Telefonaktiebolaget L M Ericsson (Publ)Inventors: Miroslav Budic, Abdennaceaur Lachtar
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Publication number: 20130116003Abstract: An Optimized Streetlight Operation (OSLO) system that utilizes a cellular network overlay to broadcast control commands issued by a centralized Streetlight Operation Center (SOC) to RF control modules mounted on each streetlight pole. The cellular network may be a CDMA network utilizing Short Message Service-Broadcast (SMS-B) messaging. When a Mobile Telephone Exchange/Mobile Switching Center (MTX/MSC) receives a SOC control command from the SOC, the MTX/MSC causes a plurality of BSs to broadcast the SOC command in the network operating area a defined number of times. Each RF control module that successfully receives the broadcast SOC control command, performs actions to control operation of the module's associated streetlight, and transmits a confirmation message to the module's serving BS indicating the SOC command was received. The modules are configured to stagger transmission of the confirmation messages over a period of time to reduce a peak load imposed on the cellular network.Type: ApplicationFiled: August 30, 2012Publication date: May 9, 2013Inventors: Pulin Chhatbar, Miroslav Budic, Abdennaceaur Lachtar, Ravindra Dongre, Gheorghe Spiride
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Patent number: 8433333Abstract: A radio network controller of a wireless telecommunications network having an umbrella cell base station for an umbrella cell and capacity cell base stations for capacity cells within the umbrella cell includes a network interface from which a message is sent to the umbrella base station of the umbrella cell to search for capacity cells within the umbrella cell to redirect traffic of an AT from the umbrella cell to at least one of the capacity cells, and at which eligible capacity cells to which traffic of the AT can be redirected is received. The controller includes a processing unit which selects target capacity cells from the eligible capacity cells to which traffic of the AT will be redirected. A method for a radio network controller of a wireless telecommunications network having an umbrella cell base station for an umbrella cell and capacity cell base stations for capacity cells within the umbrella cell.Type: GrantFiled: May 27, 2010Date of Patent: April 30, 2013Assignee: Telefonaktiebolaget L M Ericsson (publ)Inventors: Scott Tran, Michael Woodmansee, Gordon Edwards, Kashif Hussain, Martin Kendall, Miroslav Budic, Abdennaceaur Lachtar, Yves Choiniere
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Publication number: 20130064087Abstract: A base station that supports different sectors and co-located different frequencies across the different sectors in a CDMA network having an Access Terminal includes a processing unit which determines a load imbalance on a connection in a first sector at a first frequency. The base station includes a network interface unit through which the processing unit offloads traffic from the connection in the first sector at the first frequency to a first or second sector at a second frequency. A method for sending traffic with a base station that supports different sectors and co-located different frequencies across the different sectors in a CDMA network having an Access Terminal including the steps of determining with a processing unit a load imbalance on a connection in a first sector at a first frequency. There is the step of offloading with the processing unit through network interface unit traffic from the connection in the first sector at the first frequency to a first or second sector at a second frequency.Type: ApplicationFiled: September 8, 2011Publication date: March 14, 2013Inventors: Miroslav Budic, Abdennaceaur Lachtar
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Publication number: 20120231824Abstract: A method and apparatus for controlling a Network Load Balancing (NLB) algorithm that balances a traffic load between multiple downlink (DL) sectors in a cellular telecommunication network. A Connection Integrity Preservation (CIP) algorithm, which runs on top of the NLB algorithm in the Radio Network Controller/Base Station Controller (RNC/BSC), minimizes the risk of degrading network performance due to NLB offload decisions. The CIP algorithm may override an NLB offload decision, for example, if there have been too many offload failures, there are no target DL sectors available to acquire an offloaded Access Terminal (AT), or the offloaded AT is not acquired within a threshold time period. The CIP algorithm ensures required metrics are collected, and minimizes the impact on RNC/BSC processing due to Routing Update messages needed to make offload decisions. The invention enables the NLB algorithm to realize its potential without negative side-effects.Type: ApplicationFiled: June 16, 2011Publication date: September 13, 2012Inventors: Miroslav Budic, Abdennaceaur Lachtar, Narendra Tilwani, Pulin Chhatbar
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Publication number: 20110294503Abstract: A radio network controller of a wireless telecommunications network having an umbrella cell base station for an umbrella cell and capacity cell base stations for capacity cells within the umbrella cell includes a network interface from which a message is sent to the umbrella base station of the umbrella cell to search for capacity cells within the umbrella cell to redirect traffic of an AT from the umbrella cell to at least one of the capacity cells, and at which eligible capacity cells to which traffic of the AT can be redirected is received. The controller includes a processing unit which selects target capacity cells from the eligible capacity cells to which traffic of the AT will be redirected. A method for a radio network controller of a wireless telecommunications network having an umbrella cell base station for an umbrella cell and capacity cell base stations for capacity cells within the umbrella cell.Type: ApplicationFiled: May 27, 2010Publication date: December 1, 2011Inventors: Scott Tran, Michael Woodmansee, Gordon Edwards, Kashif Hussain, Martin Kendall, Miroslav Budic, Abdennaceaur Lachtar, Yves Choiniere
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Patent number: 7289484Abstract: This invention presents an efficient and efficacious method for an equitable distribution of wireless traffic across the 800 and 1900 MHz bands. Even though traffic distribution across bands is desirable, there is a risk of call failure because of location of the mobile in the vicinity of a BTS group with low capacity in the other band. The method proposed here tells how decisions to migrate calls across bands can be made robust against call failures without imposing unreasonable constraints that make such decisions sparing.Type: GrantFiled: July 12, 2002Date of Patent: October 30, 2007Assignee: Nortel Networks LimitedInventors: Parthasarathy Guturu, Abdennaceaur Lachtar
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Publication number: 20040008643Abstract: This invention presents an efficient and efficacious method for an equitable distribution of wireless traffic across the 800 and 1900 MHz bands. Even though traffic distribution across bands is desirable, there is a risk of call failure because of location of the mobile in the vicinity of a BTS group with low capacity in the other band. The method proposed here tells how decisions to migrate calls across bands can be made robust against call failures without imposing unreasonable constraints that make such decisions sparing.Type: ApplicationFiled: July 12, 2002Publication date: January 15, 2004Applicant: Nortel Networks LimitedInventors: Parthasarathy Guturu, Abdennaceaur Lachtar
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Publication number: 20030125039Abstract: The carrier determination algorithm (CDA) used in multi carrier traffic allocation in mobile wireless digital telephony is enhanced. Access failure rates are reduced by the enhancements. One technique is based on selecting the originating carrier if capacity is available on that carrier. Availability of resources on other sections is also considered in selecting a carrier frequency, as is which carriers are data-filled with the same priority when carrier priorities are considered. Consideration is also given to possible alternative band carriers if in-band carriers do not have adequate capacity.Type: ApplicationFiled: December 27, 2001Publication date: July 3, 2003Applicant: Nortel Networks LimitedInventors: Abdennaceaur Lachtar, Sarvesh Sharma