-
公开(公告)号：BR0115760A
公开(公告)日：2006-05-02
申请号：BR0115760
申请日：2001-11-20
Applicant: QUALCOMM INC
Inventor： RAZOUMOV LEONID , HOLTZMAN JACK M
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. The PF values allow the base station to schedule active mobile units having pending data. The scheduling produces an approximately equal share of the allocated transmission time to the multiple mobile stations.
-
公开(公告)号：BR0108900A
公开(公告)日：2006-02-07
申请号：BR0108900
申请日：2001-03-02
Applicant: QUALCOMM INC
Inventor： SARKAR SANDIP , JOU YU-CHEUN , HOLTZMAN JACK M
Abstract: A method of modifying gain tables for the reverse-link communications in a cdma2000 wireless communication network includes the steps of estimating the velocity of a mobile station for a given frame error rate (FER) and data rate, and providing three gains to choose between based on the estimated velocity in order to specify a reverse-link transmit power level. The velocity estimation may be performed using a level crossing technique, a covariance approximation technique, or a Doppler spectrum estimation technique.
-
公开(公告)号：BR0207503A
公开(公告)日：2004-12-28
申请号：BR0207503
申请日：2002-02-22
Applicant: QUALCOMM INC
Inventor： HOLTZMAN JACK M , BAO GANG
Abstract: A method and apparatus for scheduling transmit rates and power levels for data in conjunction with a voice-data communication during conditions of soft and softer handoff. During conditions of no handoff, or hard handoff, an algorithm selects a slot reflecting a favored power level and transmission rate for transmitting the non-voice data on a supplemental channel. The slot is selected based upon the transmission power levels for voice-data transmitted by a base station to a remote station on a fundamental channel. The algorithm applies to softer handoff using information from all the sectors of a base station involved in the softer handoff. During soft handoff, instead of scheduling forward link transmission based on recent power and rate, or C/I information, data is continuously transmitted to the user at a power level based on average required power.
-
公开(公告)号：BR0115762A
公开(公告)日：2004-12-07
申请号：BR0115762
申请日：2001-11-20
Applicant: QUALCOMM INC
Inventor： ODENWALDER JOSEPH P , SARKAR SANDIP , HOLTZMAN JACK M
IPC: H04J11/00 , H04J13/00 , H04L1/00 , H04L1/08 , H04L12/56 , H04L29/06 , H04L29/08 , H04W4/18 , H04W28/06 , H04J13/02
Abstract: In a communication system wherein packetized data is transmitted to remote stations in a channel sensitive manner, a preamble must be transmitted with each discrete data transmission to the remote station. Method and apparatus are presented herein for generating an optimized preamble structure for use with transmissions of packetized data. An optimized preamble structure is one that is easily detectable and decodable, yet occupies a small fractional overhead of the entire transmission to the remote station. Information that needs to be carried by a preamble are used to create a basic structural unit, which is then redundantly permuted.
-
公开(公告)号：NO20035418D0
公开(公告)日：2003-12-05
申请号：NO20035418
申请日：2003-12-05
Applicant: QUALCOMM INC
Inventor： JAIN AVINASH , HOLTZMAN JACK M
Abstract: Method and apparatus for congestion control in a wireless communication system. Individual target data rate values are assigned individual access terminals. The individual data rates of the access terminals are adjusted to achieve the corresponding individual target data rate values. If the target values are not achieved within a predetermined number of iterations, the individual data rate is adjusted. In one embodiment, the status of a congestion bit indicates the type of adjustment, such as increase or decrease, wherein the status of the congestion bit is determined by comparing a congestion parameter to a predetermined threshold. One embodiment implements an outerloop threshold having a margin with respect to the desired congestion metric threshold. According to one embodiment, a congestion indicator includes multiple bits, wherein at least one bit instructs the mobile station to use target values or else to adjust without regard to a target value.
-
Patent Agency Ranking106.发明专利
公开(公告)号：AU2003231193A1
公开(公告)日：2003-11-17
申请号：AU2003231193
申请日：2003-04-29
Applicant: QUALCOMM INC
Inventor： BAO GANG , SARKAR SANDIP , PUIG-OSES DAVID , WEI YONGBIN , HOLTZMAN JACK M
Abstract: A method for formatting a packet into a transmission format comprising: determining a fading curve representative of a transmission channel on which the packet is to be sent to a remote station; determining a margin offset to the fading curve based on a feedback message from the remote station; and determining whether a transmission format incorporating the margin offset is feasible for formatting the packet; and if feasible, then formatting the packet according the trasmission format incorporating the margin offset.
-
公开(公告)号：AT251822T
公开(公告)日：2003-10-15
申请号：AT00908417
申请日：2000-01-28
Applicant: QUALCOMM INC
Inventor： CHEN TAO , HOLTZMAN JACK M , SAINTS KEITH , WHEATLEY CHARLES E III , LING FUYUN , SINDHUSHAYANA NAGABHUSHANA
Abstract: A power control system for controlling the transmission power in a system wherein the transmission power may be gated or capped. The receiver employs a combination of closed loop and outer loop power control. The outer loop is frozen upon detection by the receiver that the signal has been capped or gated.
-
公开(公告)号：NO20032430L
公开(公告)日：2003-07-29
申请号：NO20032430
申请日：2003-05-28
Applicant: QUALCOMM INC
Inventor： ODENWALDER JOSEPH P , SARKAR SANDIP , HOLTZMAN JACK M
IPC: H04J11/00 , H04J13/00 , H04L1/00 , H04L1/08 , H04L12/56 , H04L29/06 , H04L29/08 , H04W4/18 , H04W28/06 , H04J
Abstract: In a communication system wherein packetized data is transmitted to remote stations in a channel sensitive manner, a preamble must be transmitted with each discrete data transmission to the remote station. Method and apparatus are presented herein for generating an optimized preamble structure for use with transmissions of packetized data. An optimized preamble structure is one that is easily detectable and decodable, yet occupies a small fractional overhead of the entire transmission to the remote station. Information that needs to be carried by a preamble are used to create a basic structural unit, which is then redundantly permuted.
-
公开(公告)号：NO20032430D0
公开(公告)日：2003-05-28
申请号：NO20032430
申请日：2003-05-28
Applicant: QUALCOMM INC
Inventor： ODENWALDER JOSEPH P , SARKAR SANDIP , HOLTZMAN JACK M
IPC: H04J11/00 , H04J13/00 , H04L1/00 , H04L1/08 , H04L12/56 , H04L29/06 , H04L29/08 , H04W4/18 , H04W28/06 , H04J
Abstract: In a communication system wherein packetized data is transmitted to remote stations in a channel sensitive manner, a preamble must be transmitted with each discrete data transmission to the remote station. Method and apparatus are presented herein for generating an optimized preamble structure for use with transmissions of packetized data. An optimized preamble structure is one that is easily detectable and decodable, yet occupies a small fractional overhead of the entire transmission to the remote station. Information that needs to be carried by a preamble are used to create a basic structural unit, which is then redundantly permuted.
-
公开(公告)号：NO20032429D0
公开(公告)日：2003-05-28
申请号：NO20032429
申请日：2003-05-28
Applicant: QUALCOMM INC
Inventor： HOLTZMAN JACK M , SARKAR SANDIP , SAIFUDDIN AHMED
IPC: H04B7/005 , H04B7/26 , H04L1/00 , H04L1/16 , H04L1/18 , H04W52/22 , H04W52/28 , H04W52/48 , H04L
Abstract: The present invention relates to wireless voice and data communication systems. More particularly, the present invention relates to novel and improved methods and apparatus for transmitting data traffic on a communication channel. One such method comprises the steps of packaging a data payload into a plurality of subpackets; transmitting a first subpacket to a remote station; if the channel conditions are optimal, transmitting a remaining portion of the plurality of subpackets to the remote station; and if the channel conditions are not optimal within a predetermined time duration, then transmitting a remaining portion of the plurality of subpackets during unfavorable channel conditions. The apparatus may comprise means for packaging a data payload into a plurality of subpackets; means for transmitting a plurality of subpackets to a remote station; means for deciding, after the means for transmitting a plurality of subpackets has transmitted a first subpacket, whether: if the channel conditions are optimal, to transmit a remaining portion of the plurality of subpackets to the remote station; and if the channel conditions are not optimal within a predetermined time duration, then to transmit a remaining portion of the plurality of subpackets during unfavorable channel conditions. The information contained in this facsimile is confidential and is intended for the named addressee only. If the reader of the message is not the intended recipient, you must not copy, distribute or take any action in reliance on it. If you have received this facsimile in error, please notify us immediately and return the original to the sender by mail.
-
-
-
-
-
-
-
-
-
Search Results
160
records
(took 0.026 seconds)
