Patents by Inventor Chandrasekhar T. Sundarraman

Chandrasekhar T. Sundarraman 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: 8929332
    Abstract: Devices and methods are provided for handing off an access terminal from a macro base station to a femto access point (AP). In one embodiment, the method involves receiving a facilities directive or the like from a communication network entity, such as, for example, a serving mobile switching center (MSC). The method may involve selecting the femto AP based at least in part on femto configuration information, which may include at least one global identifier of the femto AP. The method may involve determining a uniform resource identifier of the femto AP based at least in part on at least one global identifier (e.g., MSC identifier and/or cell identifier).
    Type: Grant
    Filed: August 20, 2009
    Date of Patent: January 6, 2015
    Assignee: QUALCOMM Incorporated
    Inventors: Chandrasekhar T. Sundarraman, Haipeng Jin, John W. Nasielski, Peerapol Tinnakomsrisuphap, Jun Wang, Arungundram C. Mahendran
  • Patent number: 8886200
    Abstract: Ambiguity (e.g., confusion) associated with access point identifiers may be resolved by querying candidate target access points and/or by using historical records indicative of one or more access points that the access point has previously accessed. For example, messages may be sent to access points that are assigned the same identifier to cause the access points to monitor for a signal from an access terminal that received the identifier from a target access point. The target access point may then be identified based on any responses that indicate that a signal was received from the access terminal. A mapping may be maintained for that access terminal that maps the identifier to that access point so that the mapping may be used to resolve any future confusion associated with the use of that identifier by that access terminal.
    Type: Grant
    Filed: September 16, 2009
    Date of Patent: November 11, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: Aleksandar M. Gogic, Chandrasekhar T. Sundarraman, Sanjiv Nanda, Peerapol Tinnakornsrisuphap, Rajarshi Gupta
  • Patent number: 8798634
    Abstract: Systems, apparatus and methods for facilitating identification and/or acquisition of an access point are provided. Methods can include transmitting or receiving access point information (“API”) indicative of an identification of the access point (“AP”). The API can be provided at the AP through hardwiring or receipt of configuration information input by a user or transmitted to the AP by a network operator through Over-The-Air (“OTA”) signaling. The API can be computer-readable and, in some embodiments, the API can also be human-readable. The API can be transmitted on a paging channel from which user equipment (“UE”) can receive information. The frequency at which the API is transmitted can be fixed, dynamic and/or configurable. Upon receipt of the API, acquisition of the AP is attempted if the AP is determined to be a permitted AP.
    Type: Grant
    Filed: June 29, 2012
    Date of Patent: August 5, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: Young C. Yoon, Manoj M. Deshpande, Jen Mei Chen, Chandrasekhar T. Sundarraman, Srinivasan Balasubramanian
  • Publication number: 20140198755
    Abstract: A radio frequency receive chain of an access point is reused for different functions. For example, the same RF receive chain may be used to receive on a downlink at certain points in time and on an uplink at other points in time. An RF receive chain that is used to derive synchronization from downlink signals received from a macro system also may be used to receive uplink signals from an access terminal to provide assistance for hand-in of the access terminal. Accelerated searching for hand-in may be provided through the use of a relatively small search window for hand-in of an access terminal to a small coverage access point. In some aspects, the search window may be defined based on the distance between access points or calibration of synchronization error between access points.
    Type: Application
    Filed: March 14, 2014
    Publication date: July 17, 2014
    Applicant: QUALCOMM Incorporated
    Inventors: Chandrasekhar T. SUNDARRAMAN, Aleksandar M. GOGIC
  • Patent number: 8760998
    Abstract: Ambiguity (e.g., confusion) associated with access point identifiers may be resolved by querying candidate target access points and/or by using historical records indicative of one or more access points that the access point has previously accessed. For example, messages may be sent to access points that are assigned the same identifier to cause the access points to monitor for a signal from an access terminal that received the identifier from a target access point. The target access point may then be identified based on any responses that indicate that a signal was received from the access terminal. In some aspects the access points subject to being queried may be selected using a tiered priority. In addition, it may be determined based on prior handoffs of a given access terminal that when that access terminal reports a given identifier, the access terminal usually ends up being handed-off to a particular access point.
    Type: Grant
    Filed: February 4, 2013
    Date of Patent: June 24, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: Aleksandar M. Gogic, Chandrasekhar T. Sundarraman, Sanjiv Nanda, Peerapol Tinnakornsrisuphap, Rajarshi Gupta
  • Patent number: 8699453
    Abstract: A radio frequency receive chain of an access point is reused for different functions. For example, the same RF receive chain may be used to receive on a downlink at certain points in time and on an uplink at other points in time. An RF receive chain that is used to derive synchronization from downlink signals received from a macro system also may be used to receive uplink signals from an access terminal to provide assistance for hand-in of the access terminal. Accelerated searching for hand-in may be provided through the use of a relatively small search window for hand-in of an access terminal to a small coverage access point. In some aspects, the search window may be defined based on the distance between access points or calibration of synchronization error between access points.
    Type: Grant
    Filed: January 28, 2010
    Date of Patent: April 15, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: Chandrasekhar T. Sundarraman, Aleksandar M. Gogic
  • Patent number: 8379512
    Abstract: Ambiguity (e.g., confusion) associated with access point identifiers may be resolved by querying candidate target access points and/or by using historical records indicative of one or more access points that the access point has previously accessed. For example, messages may be sent to access points that are assigned the same identifier to cause the access points to monitor for a signal from an access terminal that received the identifier from a target access point. The target access point may then be identified based on any responses that indicate that a signal was received from the access terminal. In some aspects the access points subject to being queried may be selected using a tiered priority. In addition, it may be determined based on prior handoffs of a given access terminal that when that access terminal reports a given identifier, the access terminal usually ends up being handed-off to a particular access point.
    Type: Grant
    Filed: September 16, 2009
    Date of Patent: February 19, 2013
    Assignee: QUALCOMM Incorporated
    Inventors: Aleksandar M. Gogic, Chandrasekhar T. Sundarraman, Sanjiv Nanda, Peerapol Tinnakornsrisuphap, Rajarshi Gupta
  • Publication number: 20120270546
    Abstract: Systems, apparatus and methods for facilitating identification and/or acquisition of an access point are provided. Methods can include transmitting or receiving access point information (“API”) indicative of an identification of the access point (“AP”). The API can be provided at the AP through hardwiring or receipt of configuration information input by a user or transmitted to the AP by a network operator through Over-The-Air (“OTA”) signaling. The API can be computer-readable and, in some embodiments, the API can also be human-readable. The API can be transmitted on a paging channel from which user equipment (“UE”) can receive information. The frequency at which the API is transmitted can be fixed, dynamic and/or configurable. Upon receipt of the API, acquisition of the AP is attempted if the AP is determined to be a permitted AP.
    Type: Application
    Filed: June 29, 2012
    Publication date: October 25, 2012
    Applicant: QUALCOMM Incorporated
    Inventors: Young C. YOON, Manoj M. Deshpande, Jen Mei Chen, Chandrasekhar T. Sundarraman, Srinivasan Balasubramanian
  • Patent number: 8229440
    Abstract: Systems, apparatus and methods for facilitating identification and/or acquisition of an access point are provided. Methods can include transmitting or receiving access point information (“API”) indicative of an identification of the access point (“AP”). The API can be provided at the AP through hardwiring or receipt of configuration information input by a user or transmitted to the AP by a network operator through Over-The-Air (“OTA”) signaling. The API can be computer-readable and, in some embodiments, the API can also be human-readable. The API can be transmitted on a paging channel from which user equipment (“UE”) can receive information. The frequency at which the API is transmitted can be fixed, dynamic and/or configurable. Upon receipt of the API, acquisition of the AP is attempted if the AP is determined to be a permitted AP.
    Type: Grant
    Filed: July 13, 2009
    Date of Patent: July 24, 2012
    Assignee: QUALCOMM Incorporated
    Inventors: Young C. Yoon, Manoj M. Deshpande, Jen Mei Chen, Chandrasekhar T. Sundarraman, Srinivasan Balasubramanian
  • Publication number: 20110016313
    Abstract: Aspects describe compressing the concatenation of IP headers, UDP headers, ESP headers, and potentially other headers inside the ESP header. The multiple headers are regarded as one header chain and compressed as a single header chain. The compression can utilize a robust header compression (ROHC) framework. The ROHC ESP profile can be utilized as a basis for compression of ESP/UDP/IP headers with the addition of static chains and dynamic chains for multiple layer transport and application layer headers. Static chains include UDP static header fields either between static IP header fields and static IP header fields or between static IP header fields and static ESP header fields. Dynamic chains include UDP dynamic header fields either between dynamic IP header fields and dynamic ESP header fields or between static IP header fields and static IP header fields.
    Type: Application
    Filed: July 15, 2009
    Publication date: January 20, 2011
    Applicant: QUALCOMM Incorporated
    Inventors: Haipeng Jin, Jun Wang, Lakshminath Reddy Dondeti, Chandrasekhar T. Sundarraman, Anan Palanigounder
  • Publication number: 20100208609
    Abstract: Providing for dynamic mapping of quality of service (QoS) for wireless communication services provided at least in part over broadband Internet is described herein. By way of example, a data packet can be received and analyzed at a broadband Internet link to obtain a QoS level for the data packet. The QoS level can be correlated with a QoS of reverse link traffic for the communication service. If an inconsistency exists, the QoS level can be updated to be consistent with the QoS of the reverse link traffic. In at least one aspect, updating the QoS level can be conditioned at least in part on a type of traffic or service employed for the communication service. In this manner, traffic transmitted over the broadband Internet link can be treated with an appropriate QoS even if marked incorrectly by an entity transmitting the data packet.
    Type: Application
    Filed: February 11, 2010
    Publication date: August 19, 2010
    Applicant: QUALCOMM Incorporated
    Inventors: Chandrasekhar T. Sundarraman, Jun Wang
  • Publication number: 20100195627
    Abstract: A radio frequency receive chain of an access point is reused for different functions. For example, the same RF receive chain may be used to receive on a downlink at certain points in time and on an uplink at other points in time. An RF receive chain that is used to derive synchronization from downlink signals received from a macro system also may be used to receive uplink signals from an access terminal to provide assistance for hand-in of the access terminal. Accelerated searching for hand-in may be provided through the use of a relatively small search window for hand-in of an access terminal to a small coverage access point. In some aspects, the search window may be defined based on the distance between access points or calibration of synchronization error between access points.
    Type: Application
    Filed: January 28, 2010
    Publication date: August 5, 2010
    Applicant: QUALCOMM Incorporated
    Inventors: Chandrasekhar T. Sundarraman, Aleksandar M. Gogic
  • Publication number: 20100067371
    Abstract: Ambiguity (e.g., confusion) associated with access point identifiers may be resolved by querying candidate target access points and/or by using historical records indicative of one or more access points that the access point has previously accessed. For example, messages may be sent to access points that are assigned the same identifier to cause the access points to monitor for a signal from an access terminal that received the identifier from a target access point. The target access point may then be identified based on any responses that indicate that a signal was received from the access terminal In some aspects the access points subject to being queried may be selected using a tiered priority. In addition, it may be determined based on prior handoffs of a given access terminal that when that access terminal reports a given identifier, the access terminal usually ends up being handed-off to a particular access point.
    Type: Application
    Filed: September 16, 2009
    Publication date: March 18, 2010
    Applicant: QUALCOMM Incorporated
    Inventors: Aleksandar M. Gogic, Chandrasekhar T. Sundarraman, Sanjiv Nanda, Peerapol Tinnakornsrisuphap, Rajarshi Gupta
  • Publication number: 20100069072
    Abstract: Ambiguity (e.g., confusion) associated with access point identifiers may be resolved by querying candidate target access points and/or by using historical records indicative of one or more access points that the access point has previously accessed. For example, messages may be sent to access points that are assigned the same identifier to cause the access points to monitor for a signal from an access terminal that received the identifier from a target access point. The target access point may then be identified based on any responses that indicate that a signal was received from the access terminal. In some aspects the access points subject to being queried may be selected using a tiered priority. In addition, it may be determined based on prior handoffs of a given access terminal that when that access terminal reports a given identifier, the access terminal usually ends up being handed-off to a particular access point.
    Type: Application
    Filed: September 16, 2009
    Publication date: March 18, 2010
    Applicant: QUALCOMM Incorporated
    Inventors: Aleksandar M. Gogic, Chandrasekhar T. Sundarraman, Sanjiv Nanda, Peerapol Tinnakornsrisuphap, Rajarshi Gupta
  • Publication number: 20100048216
    Abstract: Devices and methods are provided for handing off an access terminal from a macro base station to a femto access point (AP). In one embodiment, the method involves receiving a facilities directive or the like from a communication network entity, such as, for example, a serving mobile switching center (MSC). The method may involve selecting the femto AP based at least in part on femto configuration information, which may include at least one global identifier of the femto AP. The method may involve determining a uniform resource identifier of the femto AP based at least in part on at least one global identifier (e.g., MSC identifier and/or cell identifier).
    Type: Application
    Filed: August 20, 2009
    Publication date: February 25, 2010
    Applicant: QUALCOMM Incorporated
    Inventors: Chandrasekhar T. Sundarraman, Haipeng Jin, John W. Nasielski, Peerapol Tinnakomsrisuphap, Jun Wang, Arungundram C. Mahendran
  • Publication number: 20100008259
    Abstract: Systems, apparatus and methods for facilitating identification and/or acquisition of an access point are provided. Methods can include transmitting or receiving access point information (“API”) indicative of an identification of the access point (“AP”). The API can be provided at the AP through hardwiring or receipt of configuration information input by a user or transmitted to the AP by a network operator through Over-The-Air (“OTA”) signaling. The API can be computer-readable and, in some embodiments, the API can also be human-readable. The API can be transmitted on a paging channel from which user equipment (“UE”) can receive information. The frequency at which the API is transmitted can be fixed, dynamic and/or configurable. Upon receipt of the API, acquisition of the AP is attempted if the AP is determined to be a permitted AP.
    Type: Application
    Filed: July 13, 2009
    Publication date: January 14, 2010
    Applicant: QUALCOMM Incorporated
    Inventors: Young C. Yoon, Manoj M. Deshpande, Jen Mei Chen, Chandrasekhar T. Sundarraman, Srinivasan Balasubramanian