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).

  • Patent number: 8983526
    Abstract: 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: Grant
    Filed: August 30, 2012
    Date of Patent: March 17, 2015
    Assignee: Telefonaktiebolaget L M Ericsson (publ)
    Inventors: Pulin Chhatbar, Miroslav Budic, Abdennaceaur Lachtar, Ravindra Dongre, Gheorghe Spiride
  • Patent number: 8694018
    Abstract: 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: Grant
    Filed: June 16, 2011
    Date of Patent: April 8, 2014
    Assignee: Telefonaktiebolaget L M Ericsson (Publ)
    Inventors: Miroslav Budic, Abdennaceaur Lachtar, Narendra Tilwani, Pulin Chhatbar
  • Patent number: 8675606
    Abstract: 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: Grant
    Filed: September 8, 2011
    Date of Patent: March 18, 2014
    Assignee: Telefonaktiebolaget L M Ericsson (Publ)
    Inventors: Miroslav Budic, Abdennaceaur Lachtar
  • Publication number: 20130116003
    Abstract: 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: Application
    Filed: August 30, 2012
    Publication date: May 9, 2013
    Inventors: Pulin Chhatbar, Miroslav Budic, Abdennaceaur Lachtar, Ravindra Dongre, Gheorghe Spiride
  • Patent number: 8433333
    Abstract: 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: Grant
    Filed: May 27, 2010
    Date of Patent: April 30, 2013
    Assignee: Telefonaktiebolaget L M Ericsson (publ)
    Inventors: Scott Tran, Michael Woodmansee, Gordon Edwards, Kashif Hussain, Martin Kendall, Miroslav Budic, Abdennaceaur Lachtar, Yves Choiniere
  • Publication number: 20130064087
    Abstract: 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: Application
    Filed: September 8, 2011
    Publication date: March 14, 2013
    Inventors: Miroslav Budic, Abdennaceaur Lachtar
  • Publication number: 20120231824
    Abstract: 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: Application
    Filed: June 16, 2011
    Publication date: September 13, 2012
    Inventors: Miroslav Budic, Abdennaceaur Lachtar, Narendra Tilwani, Pulin Chhatbar
  • Publication number: 20110294503
    Abstract: 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: Application
    Filed: May 27, 2010
    Publication date: December 1, 2011
    Inventors: Scott Tran, Michael Woodmansee, Gordon Edwards, Kashif Hussain, Martin Kendall, Miroslav Budic, Abdennaceaur Lachtar, Yves Choiniere
  • Patent number: 7289484
    Abstract: 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: Grant
    Filed: July 12, 2002
    Date of Patent: October 30, 2007
    Assignee: Nortel Networks Limited
    Inventors: Parthasarathy Guturu, Abdennaceaur Lachtar
  • Publication number: 20040008643
    Abstract: 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: Application
    Filed: July 12, 2002
    Publication date: January 15, 2004
    Applicant: Nortel Networks Limited
    Inventors: Parthasarathy Guturu, Abdennaceaur Lachtar
  • Publication number: 20030125039
    Abstract: 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: Application
    Filed: December 27, 2001
    Publication date: July 3, 2003
    Applicant: Nortel Networks Limited
    Inventors: Abdennaceaur Lachtar, Sarvesh Sharma