METHODS FOR FORWARD ERROR CORRECTION CODING ABOVE A RADIO LINK CONTROL LAYER AND RELATED APPARATUS

    公开(公告)号:CA2535899A1

    公开(公告)日:2005-03-10

    申请号:CA2535899

    申请日:2004-08-20

    Applicant: QUALCOMM INC

    Abstract: Transmission techniques are provided that improve service continuity and reduce interruptions in delivery of content that can be caused by transition s that occur when the User Equipment (UE) moves from one cell to the other, or when the delivery of content changes from a Point-to-Point (PTP) connection to a Point-to-Multipoint (PTM) connection in the same serving cell, and vice- versa. Such transmission techniques enable seamless delivery of content acro ss cell borders and/or between different transmission schemes such as Point-to- Multipoint (PTM) and Point-to-Point (PTP). Mechanisms for adjusting differen t streams and for recovering content from each data block during such transitions are also provided so that data is not lost during a transition. In addition, mechanisms for realigning data during decoding at a receiving terminal are also provided.

    93.
    发明专利
    未知

    公开(公告)号:BR0214078A

    公开(公告)日:2004-12-07

    申请号:BR0214078

    申请日:2002-11-12

    Applicant: QUALCOMM INC

    Abstract: Techniques for determining valid (i.e., supported) TFCs from among all configured TFCs for normal and compressed modes. These techniques maintain sufficient historical information such that 'TFC qualification' may be accurately performed. In a first scheme, Tx_power-requirement states are maintained for different combinations of each TFC. One combination is applicable for each TFC at each TFC interval, and valid TFCs are determined from applicable combinations in the proper state(s). In a second scheme, two Tx_power_requirement states are maintained for each TFC for the normal and compressed modes. In a third scheme, a single Tx_power_requirement state is maintained for each TFC for both modes based on a particular relative power requirement. In a fourth scheme, Tx_power_requirement states are maintained for a set of relative 'bins' that cover the total range of required transmit power for all TFCs. And in a fifth scheme, a set of relative power requirement thresholds are maintained.

    Data delivery in a hybrid automatic retransmission mechanism in cdma communication systems

    公开(公告)号:AU2003239459A8

    公开(公告)日:2003-11-11

    申请号:AU2003239459

    申请日:2003-05-13

    Applicant: QUALCOMM INC

    Abstract: Techniques for delivering data recovered by an HARQ entity in proper order to higher layers in a CDMA system. In a method, packets are received from the HARQ entity by the re-ordering entity and missing packets among the received packets are detected. Packets may be transmitted in a sequential order based on transmission sequence numbers (TSNs) assigned to the packets, and missing packets may be detected based on the TSNs of the received packets. Delivery of received packets later than the missing packets are stalled because higher layers expect data in-order. A determination is thereafter made whether each missing packet is (1) subsequently received from the HARQ entity or (2) lost, by successively eliminating HARQ channels that may be used to send the missing packet. Received packets previously stalled by each missing packet are delivered after the missing packet is determined to be lost or received.

    95.
    发明专利
    未知

    公开(公告)号:NO20100520L

    公开(公告)日:2003-07-01

    申请号:NO20100520

    申请日:2010-04-12

    Applicant: QUALCOMM INC

    Abstract: A method and system that enables multiplexing a plurality of data streams onto one data stream based on data stream priorities and available transport frame combinations (TFCs) is disclosed. A mobile station 12 has applications that produce separate data streams. Example applications include voice 32, signaling 34, E-mail 36 and web applications 38. The data streams are combined by a multiplexer module 48 into one data stream called the transport stream 50. The transport stream 50 is sent over the reverse link to base station transceivers (BTS) 14. The multiplexer module 48 multiplexes the data streams onto the transport stream according to their priorities and the available TFCs.

    TRANSPORT FORMAT COMBINATION SELECTION FOR COMPRESSED MODE IN A W-CDMA SYSTEM

    公开(公告)号:CA2742097A1

    公开(公告)日:2003-05-22

    申请号:CA2742097

    申请日:2002-11-12

    Applicant: QUALCOMM INC

    Abstract: Techniques for determining valid (i.e., supported) TFCs from among all configured TFCs for normal and compressed modes. These techniques maintain sufficient historical information such that 'TFC qualification' may be accurately performed. In a first scheme, Tx_power-requirement states are maintained for different combinations of each TFC. One combination is applicable for each TFC at each TFC interval, and valid TFCs are determined from applicable combinations in the proper state(s). In a second scheme, two Tx_power_requirement states are maintained for each TFC for the normal and compressed modes. In a third scheme, a single Tx_power_requirement state is maintained for each TFC for both modes based on a particular relative power requirement. In a fourth scheme, Tx_power_requirement states are maintained for a set of relative 'bins' that cover the total range of required transmit power for all TFCs. And in a fifth scheme, a set of relative power requirement thresholds are maintained.

    METHOD AND APPARATUS FOR LOCATING GPS EQUIPPED WIRELESS DEVICES OPERATING IN ANALOG MODE

    公开(公告)号:CA2366620A1

    公开(公告)日:2000-10-05

    申请号:CA2366620

    申请日:2000-03-28

    Applicant: QUALCOMM INC

    Abstract: An apparatus and method for locating a remote station operating in analog mode, and that may not have a sense of network time, using an inverted GPS approach. The invention also enables remote stations operating in analog mod e that do not know true GPS time to determine their own location. A time stamp , reflecting the approximate time a satellite range measurement is made, is assigned to the measurement at either the remote station or elsewhere in the network. The difference between true GPS network time and the measurement ti me is treated as a variable "error" in measurement, the length of which is unknown. This variable error is determined and used in determining the physical location of the remote station.

    Method and apparatus for gps assistance in a communication system

    公开(公告)号:AU3232500A

    公开(公告)日:2000-08-29

    申请号:AU3232500

    申请日:2000-02-14

    Applicant: QUALCOMM INC

    Abstract: A method and apparatus for efficiently transmitting location assistance information to a mobile communication device over a control channel with a minimal impact on the capacity of the control channel. A position location server provides a difference between satellite locations which have been computed using Almanac data and then Ephemeris data. Sending only the difference between the locations and clock corrections computed using the two different data types, the total amount of information to be transmitted to a mobile communication device is significantly reduced. Furthermore, by providing rate of change information, the method and apparatus allows the location assistance information to remain valid for a relatively long time after it is has been received by the mobile communication device.

    METHOD AND APPARATUS FOR LINK CONTROL IN WIRELESS COMMUNICATIONS

    公开(公告)号:CA2570869C

    公开(公告)日:2014-10-07

    申请号:CA2570869

    申请日:2005-06-14

    Applicant: QUALCOMM INC

    Abstract: Methods and Systems are disclosed for use in a communication system 200 to selectively delay transmitting a second negative acknowledgement (NAK) after an initial NAK has already been sent requesting retransmission of a corrupted packet. The receiving entity 210 initiates a NAK prohibit timer 641 associated with a specific NAK 631 which prevents status reports to transmitting entity 220 from including a retransmission of the specific NAK until the timer expires. Use of the NAK prohibit timer 641 reduces the likelihood of spurious retransmissions from the transmitting entity 220 caused by a second NAK from the receiving entity 210 when the retransmission process has already been initiated.

    OUTER CODING METHODS FOR BROADCAST/MULTICAST CONTENT AND RELATED APPARATUS

    公开(公告)号:CA2539399C

    公开(公告)日:2014-05-13

    申请号:CA2539399

    申请日:2004-08-20

    Applicant: QUALCOMM INC

    Abstract: Transmission techniques are provided that improve service continuity and reduce interruptions in delivery of content that can be caused by transitions that occur when the User Equipment (UE) moves from one cell to the other, or when the delivery of content changes from a Point-to-Point (PTP) connection to a Point-to-Multipoint (PTM) connection in the same serving cell, and vice-versa. Such transmission techniques enable seamless delivery of content across cell borders and/or between different transmission schemes such as Point-to-Multipoint (PTM) and Point-to-Point (PTP). Mechanisms for adjusting different streams and for recovering content from each data block during such transitions are also provided so that data is not lost during a transition. In addition, mechanisms for realigning data during decoding at a receiving terminal are also provided.

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