Patents Represented by Attorney, Agent or Law Firm Kent D. Baker
  • Patent number: 8320922
    Abstract: Systems and techniques are disclosed relating to communications. The systems and techniques include an input device, generating a time period in response to a broadcast channel selection from the input device, generating a request to register the broadcast channel if the time period ends before receiving a second broadcast channel selection, and transmitting the request to an access network. It is emphasized that this abstract is provided to comply with the rules requiring an abstract which will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or the meaning of the claims.
    Type: Grant
    Filed: August 7, 2002
    Date of Patent: November 27, 2012
    Assignee: QUALCOMM Incorporated
    Inventors: Baaziz Achour, Lorenzo Casaccia, Ragulan Sinnarajah
  • Patent number: 7881256
    Abstract: A method and apparatus for supervising a dedicated control channel when in the discontinuous transmission mode. The mobile station monitors the frames it receives from a base station and maintains a counter of bad, good, and empty frames, referred to as CNT1, CNT2, CNT3, respectively. If a received frame is a good frame, CNT1 is reset to zero and CNT2 is incremented. If the received frame is a bad frame, CNT1 is incremented and CNT2 is reset to zero. If the received frame is an empty frame, CNT1 and CNT2 are unchanged but CNT3 is incremented. A transmitter coupled to the mobile station is enabled or disabled depending upon which, if any, of the CNTs reaches or exceeds a designated threshold value. In another embodiment, an average aggregated value reflecting the strength of the pilot signals in an active set, measured at the mobile station, is used for comparison to a threshold.
    Type: Grant
    Filed: June 3, 2002
    Date of Patent: February 1, 2011
    Assignee: Qualcomm, Incorporated
    Inventors: Yu-Cheun Jou, Edward G. Tiedemann, Jr.
  • Patent number: 7715855
    Abstract: A wireless communications network (120) responds to each incoming call placed to a wireless communications device (134) by transmitting a call-paging message (418) within a corresponding partition of a digital radio frame of prescribed format. Responsive to each occurrence of a broadcast event (404), the network transmits (414) a repeating broadcast-paging message announcing the availability of broadcast content from the network. The broadcast-paging message is transmitted multiple times within each digital radio frame. Another sequence (500) describes WCD operation in this network. Responsive to wakeup (502) from sleep, the WCD detects (509) received signal quality. The WCD also receives (510) scheduled network transmission of a call-paging message and a number of instances (at least one) of a repeating network transmitted broadcast-paging message that occurs multiple times for each scheduled transmission of the call-paging message. This number varies inversely with the detected signal quality.
    Type: Grant
    Filed: January 12, 2004
    Date of Patent: May 11, 2010
    Assignee: QUALCOMM Incorporated
    Inventor: Parvathanathan Subrahmanya
  • Patent number: 7668561
    Abstract: In a wireless communication system, an apparatus and a method are provided for controlling reverse link interference among access terminals that are power controlled by a sector of a base station. In an embodiment, the maximum effective noise power spectral density is used as a parameter for controlling the level of reverse link loading, by setting a reverse activity bit (RAB) to signal the access terminals to reduce their data rates in order to minimize interference between the access terminals if the maximum effective noise power spectral density is above a predetermined threshold.
    Type: Grant
    Filed: February 27, 2004
    Date of Patent: February 23, 2010
    Assignee: QUALCOMM Incorporated
    Inventors: Jean Put Ling Au, Christopher Gerard Lott, Naga Bhushan, Rashid Ahmed Akbar Attar
  • Patent number: 7657264
    Abstract: Techniques for scheduling terminals with different scheduling delays. Initially, the scheduling delay of each terminal is determined, and the total available transmit power and the link efficiency of each terminal are estimated. In a first scheme, the terminals are scheduled for data transmission based on the longest scheduling delay among the delays of all terminals. In a second scheme, each terminal is assigned a particular priority based on its scheduling delay, and the terminals are scheduled based on their assigned priorities. In a third scheme, the terminals are categorized into classes based on their scheduling delays. A percentage of the total available transmit power is allocated to each class, and the terminals in each class are scheduled based on the transmit power allocated to that class. In a fourth scheme, the terminals are scheduled for data transmission, and the schedule for each terminal is applied after its scheduling delay.
    Type: Grant
    Filed: December 8, 2006
    Date of Patent: February 2, 2010
    Assignee: QUALCOMM Incorporated
    Inventor: Tao Chen
  • Patent number: 7657036
    Abstract: Techniques are provided for determining an updated session encryption key. According to one embodiment, a packet index can be computed using a sequence number received in a session data packet during a SRTP session and a predetermined value. The predetermined value can be, for example, a non-zero value from a roll-over-counter that has been set to the non-zero value. The updated session encryption key can then be determined using a master key received from a BCMCS controller and the packet index. The determined updated session key is used to encrypt or de-encrypt content provided by a content server.
    Type: Grant
    Filed: September 21, 2004
    Date of Patent: February 2, 2010
    Assignee: QUALCOMM Incorporated
    Inventors: Raymond Tah-Sheng Hsu, Jun Wang
  • Patent number: 7647065
    Abstract: In a wireless communication system, an apparatus and a method are provided for controlling reverse link interference among access terminals that are power controlled by a sector of a base station. In an embodiment, the maximum effective noise power spectral density is used as a parameter for controlling the level of reverse link loading, by setting a reverse activity bit (RAB) to signal the access terminals to reduce their data rates in order to minimize interference between the access terminals if the maximum effective noise power spectral density is above a predetermined threshold.
    Type: Grant
    Filed: October 10, 2007
    Date of Patent: January 12, 2010
    Assignee: QUALCOMM Incorporated
    Inventors: Jean Put Ling Au, Christopher Gerard Lott, Naga Bhushan, Rashid Ahmed Akbar Attar
  • Patent number: 7600170
    Abstract: An acknowledgement method in a wireless communication system. Initially, a reverse supplemental channel (R-SCH) frame is received at a base station. The base station then transmits an acknowledgement (ACK) signal if quality of the received R-SCH frame is indicated as being good. A negative acknowledgement (NAK) signal is transmitted only if the received data frame is indicated as being bad but has enough energy such that, if combined with energy from retransmission of the data frame, it would be sufficient to permit correct decoding of the data frame. If the best base station is known, the acknowledgement method may reverse the transmission of the acknowledgement signals for the best base station so that only NAK signal is sent. A positive acknowledgement is assumed in the absence of an acknowledgement. This is done to minimize the transmit power requirements.
    Type: Grant
    Filed: February 4, 2004
    Date of Patent: October 6, 2009
    Assignee: QUALCOMM Incorporated
    Inventors: Peter Gaal, Tao Chen
  • Patent number: 7596090
    Abstract: Techniques to control data transmissions to efficiently utilize the available air-link resources. In accordance with a method for controlling a data transmission between a transmission source (e.g., a base station) and a receiving device (e.g., a remote terminal), a current transmission at a current data rate for a current transmission interval is received. An average throughput for the data transmission is then updated to reflect the current transmission at the current data rate. The updated average throughput is compared against a threshold throughput (which has been previously characterized) supported by the receiving device. If the average throughput exceeds the threshold throughput, the transmission source is signaled to (temporarily) stop the data transmission. Subsequently, after the average throughput has dropped below the threshold throughput, the transmission source can be signaled to resume the data transmission.
    Type: Grant
    Filed: October 4, 2001
    Date of Patent: September 29, 2009
    Assignee: Qualcomm Incorporated
    Inventor: Peter J. Black
  • Patent number: 7586837
    Abstract: Systems and techniques are disclosed detecting an embedded signal which includes producing a plurality of first correlated values from a portion of the first signal and a second signal, transforming the first correlation values into a plurality of second correlation values related to a frequency content of the first correlation values, and searching for the embedded signal by evaluating the second correlation values. It is emphasized that this abstract is provided to comply with the rules requiring an abstract which will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or the meaning of the claims.
    Type: Grant
    Filed: January 24, 2002
    Date of Patent: September 8, 2009
    Assignee: QUALCOMM Incorporated
    Inventors: Mark Roh, Raghu Challa, Serguei A. Glazko
  • Patent number: 7515713
    Abstract: In a disclosed embodiment, a visitor location register first initializes an assignment table to store N entries. Next, the visitor location register waits until a TMSI assignment is needed. Then, a counter is maintained in memory and is incremented. The value of the counter is then hashed to produce an assignment table index. Beginning at the assignment table index, the assignment table is searched for an available entry. The counter is then encrypted to produce a TMSI. The IMSI corresponding to the TMSI assignment is then stored in the assignment table.
    Type: Grant
    Filed: December 17, 2001
    Date of Patent: April 7, 2009
    Assignee: QUALCOMM Incorporated
    Inventors: Roy Franklin Quick, Jr., Gregory G. Rose
  • Patent number: 7437648
    Abstract: An acknowledgement method in a wireless communication system. Initially, a reverse supplemental channel (R-SCH) frame is received at a base station. The base station then transmits an acknowledgement (ACK) signal if quality of the received R-SCH frame is indicated as being good. A negative acknowledgement (NAK) signal is transmitted only if the received data frame is indicated as being bad but has enough energy such that, if combined with energy from retransmission of the data frame, it would be sufficient to permit correct decoding of the data frame. If the best base station is known, the acknowledgement method may reverse the transmission of the acknowledgement signals for the best base station so that only NAK signal is sent. A positive acknowledgement is assumed in the absence of an acknowledgement. This is done to minimize the transmit power requirements.
    Type: Grant
    Filed: February 6, 2006
    Date of Patent: October 14, 2008
    Assignee: QUALCOMM Incorporated
    Inventors: Sandip Sarkar, Tao Chen, Edward G. Tiedemann, Jr., Peter Gaal
  • Patent number: 7424270
    Abstract: Systems and techniques are disclosed relating to communications. The systems and techniques involve receiving a feedback parameter relating to a signal transmission, assigning a probability value to one or more of a plurality of parameter values as a function of the feedback parameter, selecting one of the parameter values as a function of the probability value assignments, and controlling the signal transmission as a function of the selected one of the parameter values. It is emphasized that this abstract is provided to comply with the rules requiring an abstract which will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or the meaning of the claims.
    Type: Grant
    Filed: September 25, 2002
    Date of Patent: September 9, 2008
    Assignee: QUALCOMM Incorporated
    Inventor: Peter Gaal
  • Patent number: 7352737
    Abstract: Systems and techniques are disclosed for establishing a reference corresponding to the timing of a received signal from the first source, determining the timing for each received signal from a plurality of second sources, adjusting the reference to the timing of the received signal from one of the second sources, the timing of the received signal used to adjust the reference being closest in time to the unadjusted reference, and synchronizing a signal to the reference for transmission.
    Type: Grant
    Filed: October 14, 2004
    Date of Patent: April 1, 2008
    Assignee: Qualcomm Incorporated
    Inventors: Josef Blanz, Serge Willenegger
  • Patent number: 7352722
    Abstract: Techniques to mitigate the effects of link imbalance for the uplink between a terminal (or UE) and multiple base stations (or Node Bs). In one aspect, the serving base station (i.e., the one designated to transmit packet data to the terminal) monitors the uplink received SNR for each terminal designated to receive packet data transmission. The serving base station then determines, based on the uplink received SNR and an SNR threshold, whether or not link imbalance potentially exists for each such terminal. In another aspect, if it is determined that link imbalance potentially exists, then a 3-way handshake is performed to check the reliability of a feedback mechanism used for packet data transmission. Appropriate responsive actions may then be performed based on the result of the check.
    Type: Grant
    Filed: May 13, 2002
    Date of Patent: April 1, 2008
    Assignee: Qualcomm Incorporated
    Inventors: Durga P. Malladi, Alkinoos Hector Vayanos
  • Patent number: 7298718
    Abstract: Systems and techniques for communications include calculating a value from data, transmitting the value and data over at least one time slot, receiving the transmission, recalculating the value from the received data, and determining the number of time slots of the transmission from the calculated and recalculated values. It is emphasized that this abstract is provided to comply with the rules requiring an abstract which will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or the meaning of the claims.
    Type: Grant
    Filed: March 25, 2002
    Date of Patent: November 20, 2007
    Assignee: QUALCOMM Incorporated
    Inventors: Joseph P. Odenwalder, Yongbin Wei, Edward G. Tiedemann, Jr., Stein A. Lundby, David Puig-Oses, Sandip Sarkar
  • Patent number: 7298776
    Abstract: Systems and techniques are disclosed wherein a gated pilot signal can be acquired by producing a plurality of product values for each of a first and second signal and a generated signal, coherently combining portions of the product values produced from the first signal and noncoherently combining those coherently combined portions to produce a first value, coherently combining portions of the product values produced from the second signal and noncoherently combining those coherently combined portions to produce a second value, and noncoherently combining the first and second values.
    Type: Grant
    Filed: March 28, 2002
    Date of Patent: November 20, 2007
    Assignee: QUALCOMM Incorporated
    Inventors: Raghu Challa, Rao Yallapragada
  • Patent number: 7277694
    Abstract: A wireless communications network (100) includes roving subscriber-stations (114) and base stations (110) receiving broadcast programs from a content server. A subscriber-station evaluates (618, 620) whether a desired program is available from a subject base station. According to this evaluation, the subscriber-station takes steps to (1) receive the desired program on a shared channel for reception by multiple subscriber-stations (816), or (2) initiate (804, 720) base station delivery (724) of the desired program to the subscriber-station on an individual channel. Responsive to a message from a subject subscriber-station identifying a desired program, a base station either (1) continues (819) transmitting the desired program upon a shared channel, (2) starts (816) transmitting the desired program on a shared channel, or (3) sends the subject subscriber-station a channel assignment message and commences transmission (722) of the desired program on the assigned individual channel.
    Type: Grant
    Filed: October 22, 2002
    Date of Patent: October 2, 2007
    Assignee: QUALCOMM Incorporated
    Inventors: Ragulan Sinnarajah, Jun Wang, Tao Chen, Raymond T. Hsu
  • Patent number: 6804220
    Abstract: Systems and techniques for communications wherein a data packet is transmitted over at least one time slot from a transmission site, a value is computed from an initial value and information, the initial value being a function of the number of time slots of the data packet transmission, the value and the information is transmitted from the transmission site, the transmitted value and the information is received at a receiving site, the value from the received information is recalculated, and the number of time slots of the data packet transmission is determined from the calculated and recalculated values.
    Type: Grant
    Filed: April 11, 2002
    Date of Patent: October 12, 2004
    Assignee: QUALCOMM Incorporated
    Inventors: Joseph P. Odenwalder, Yongbin Wei, Edward G. Tiedemann, Jr., Stein A. Lundby, David Puig-Oses, Sandip Sarkar
  • Patent number: 6795489
    Abstract: Systems and techniques are disclosed wherein a gated pilot signal can be acquired by searching for a first gated pilot signal, deriving timing information from the search for the first gated pilot signal, and searching for a second gated pilot signal using the timing information. This can be implemented in a variety of fashions including a receiver with a searcher configured to generate a bit sequence, a correlator configured to correlate a received signal with the bit sequence, and a processor configured to detect a first gated pilot signal as a function of the correlation, derive timing information from the first gated pilot signal, and detect a second gated pilot signal by using the timing information to control the bit sequence generated by the searcher. It is emphasized that this abstract is provided to comply with the rules requiring an abstract which will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure.
    Type: Grant
    Filed: August 9, 2001
    Date of Patent: September 21, 2004
    Assignee: QUALCOMM Inc.
    Inventors: Abhay A. Joshi, Arthur James Neufeld