Patents Represented by Attorney Charles Eggers
  • Patent number: 8340664
    Abstract: Techniques for performing cell reselection in a wireless communication system are described. A user equipment (UE) may initially camp on a first cell. While camped on the first cell, the UE may identify second and third cells deemed to be better than the first cell. The UE may move from the first cell to the second cell without performing cell reselection to camp on the second cell. After moving to the second cell, the UE may obtain at least one cell reselection parameter for the second and/or third cell and may update the rankings of the second and third cells based on the cell reselection parameter(s). The UE may then perform cell reselection from the first cell to the second or third cell based on the updated rankings, e.g., perform inter-frequency cell reselection from the first cell to the third cell without actually camping on the second cell.
    Type: Grant
    Filed: July 30, 2008
    Date of Patent: December 25, 2012
    Assignee: Qualcomm Incorporated
    Inventors: Nathan Edward Tenny, Masato Kitazoe, Francesco Grilli
  • Patent number: 8339944
    Abstract: Systems and methodologies are described that facilitate packet discard restriction in a wireless communication system. As described herein, a discard prohibit counter and/or other similar mechanism can be employed to limit the number of consecutive packets that are discarded by a transmitter, even in the event that the delay bounds of those packets have been exceeded. A discard prohibit counter as described herein can be updated upon a packet transmission and reset upon a packet discard to ensure that an acceptable number of packets are transmitted before a packet can be discarded. An acceptable number of packets can be selected based on device specifications, requirements of a data packet flow and/or traffic associated with the flow, or other suitable factors, and can be constant or adaptable to changes in network conditions. As further described herein, multiple counters can be separately maintained and utilized for a plurality of corresponding packet flows.
    Type: Grant
    Filed: November 3, 2008
    Date of Patent: December 25, 2012
    Assignee: Qualcomm Incorporated
    Inventor: Sai Yiu Duncan Ho
  • Patent number: 8149773
    Abstract: Techniques for supporting UE operation with enhanced uplink are described. A UE may select a first signature from a first set of signatures available for random access for enhanced uplink, generate an access preamble based on the first signature, and send the access preamble for random access while operating in an inactive state. The UE may receive an acquisition indicator (AI) for the first signature on an acquisition indicator channel (AICH) from a Node B. The UE may use a default enhanced dedicated channel (E-DCH) resource configuration for the first signature if the AI has a first predetermined value. The UE may determine an E-DCH resource configuration allocated to the UE based on an extended acquisition indicator (EAI) and a second signature if the AI has a second predetermined value. In any case, the UE may send data to the Node B using the allocated E-DCH resource configuration.
    Type: Grant
    Filed: December 29, 2008
    Date of Patent: April 3, 2012
    Assignee: QUALCOMM Incorporated
    Inventors: Sharad Deepak Sambhwani, Juan Montojo, Wei Zeng
  • Patent number: 7978635
    Abstract: Systems and methodologies are described that facilitate reliably receiving a sequence of data packets in a wireless communications environment. In particular, mechanisms are provided that enhance hybrid automatic repeat request protocols through validation of acknowledgment message detection by re-decoding. A transmitter sends a data packet from a sequence of packets in one or more data transmissions. A receiver acknowledges the data packet upon obtaining sufficient transmissions to decode the packet. The receiver re-decodes a successive data transmission in combination with previously received transmissions to validate if the transmitter detected the acknowledgment.
    Type: Grant
    Filed: January 9, 2008
    Date of Patent: July 12, 2011
    Assignee: Qualcomm Incorporated
    Inventors: Ming-Chang Tsai, James J. Wu
  • Patent number: 7899008
    Abstract: A method (18) for scheduling packet data transmissions in a wireless communication system wherein a per-user Priority Function (PF) (24) is based on a channel condition indicated by a Rate Request Indicator (RRI). The method also considers fairness criteria dictated by predetermined Quality of Service (QOS) requirements. In one embodiment, the rate request indicator is a Data Rate Request (DRR). In another embodiment, the rate request indicator is Carrier-to-Interference (C/I) information. In the exemplary embodiment, the base station calculates a Priority Function (PF) for the multiple mobile users. Each PF is a function of the rate request indicator and the projected throughput of a given mobile user. In one embodiment, the predicted throughput is calculated by T?=(T?)?.
    Type: Grant
    Filed: September 24, 2003
    Date of Patent: March 1, 2011
    Assignee: Qualcomm, Incorporated
    Inventors: Jack M. Holtzman, Leonid Razoumov
  • Patent number: 7746816
    Abstract: An apparatus and a method for power control of a channel in a communication system are disclosed.
    Type: Grant
    Filed: March 13, 2003
    Date of Patent: June 29, 2010
    Assignee: Qualcomm Incorporated
    Inventors: Rashid Ahmed Attar, Naga Bhushan
  • Patent number: 7719991
    Abstract: Method and apparatus for Reverse Rate Indicator (RRI) detection. The receiver receives data rate and subpacket index information and applies the information to decoding the RRI. Processing traverses a path based on the last several entries.
    Type: Grant
    Filed: July 14, 2003
    Date of Patent: May 18, 2010
    Assignee: Qualcomm Incorporated
    Inventors: Naga Bhushan, Jun Ma, Mingxi Fan