公开(公告)号：BRPI0407546A

公开(公告)日：2006-03-01

申请号：BRPI0407546

申请日：2004-02-18

Applicant: QUALCOMM INC

Inventor： SINDHUSHAYANA NAGABHUSHANA ,  ATTAR RASHID A ,  REZAIIFAR RAMIN

IPC: H04L12/56

Abstract: Method and apparatus for variable length Physical Layer (PL) packet generation. Multiple Security Layer (SL) packets may be multiplexed into a single PL packet to increase efficiency, wherein the SL packets may have variable lengths. In one embodiment, different format SL packets for different users are combined into capsules that form the PL packet. Shorter packets are for users in poor channel conditions or requiring smaller amounts of data due to the applications and the accompanying Quality of Service (QoS) requirements. In one embodiment, a modified Preamble structure provides for Unicast or multi-user packets. Alternate embodiment provides modified Rate Sets, a mechanism for identifying ACK from a single-user packet or a multiplexed packet (delayed ACK). ON/OFF keying for ACK channel v/s bi-polar keying used in IS-856, and/or multi-valued interpretation of DRC.

公开(公告)号：UA74181C2

公开(公告)日：2005-11-15

申请号：UA2002108077

申请日：2001-04-13

Applicant: QUALCOMM INC

Inventor： BLACK PETER J ,  ATTAR RASHID A

IPC: H04L1/16 ,  H04L1/18 ,  H04Q7/38

Abstract: Пристрійдляшвидкоїпередачісигналіву системізв'язкупризначенийдляповторноїпередачісигналіву системізв’язку. Передавальнийтермінал, наприкладбазовастанція, передаєсигналиу форміпакетівдоприймальноготерміналу, наприклад, абонентськогопункту. Приймальнийтерміналвизначає, чипакетбувпризначенийцьомуприймальномутерміналу, іякщоцетак, приймальнийтерміналдемодулюєпакет. Тодіприймальнийтерміналобчислюєметрикуякостіцьогопакету, наприкладконтролемциклічногонадлишковогокоду, іпорівнюєобчисленуметрикуякостіз метрикоюякості, щоміститьсяу цьомупакеті. Якщометрикиякостіузгоджено, пакетвважаєтьсяприйнятимправильноі перенаправляєтьсядляподальшоїобробки. Якщометрикиякостінеузгоджено, приймальнийтерміналнадсилаєзапитнаповторнупередачупакету. Передавальнийтерміналвизначає, якийпакетнеобхідноповторнопередати, базуючисьнацьомузапиті. Тодіпередавальнийтерміналплануєпакетнаповторнупередачу. Якщопередачапакетузгідноз вищезазначенимописомзривається, здійснюєтьсяповторнапередачазгідноізстандартнимисхемами, щобазуютьсянапорядковихномерах, наприкладпротоколомрадіолінії.

公开(公告)号：CA2516384A1

公开(公告)日：2004-09-02

申请号：CA2516384

申请日：2004-02-18

Applicant: QUALCOMM INC

Inventor： SINDHUSHAYANA NAGABHUSHANA ,  ATTAR RASHID A ,  REZAIIFAR RAMIN

IPC: H04L12/56

Abstract: Method and apparatus for variable length Physical Layer (PL) packet generation. Multiple Security Layer (SL) packets may be multiplexed into a single PL packet to increase efficiency, wherein the SL packets may have variable lengths. In one embodiment, different format SL packets for different users are combined into capsules that form the PL packet. Shorter packets are for users in poor channel conditions or requiring smaller amounts of data due to the applications and the accompanying Quality of Service (QoS) requirements. In one embodiment, a modified Preamble structure provides for Unicast or multi-user packets. Alternate embodiment provides modified Rate Sets, a mechanism for identifying ACK from a single-user packet or a multiplexed packet (delayed ACK). ON/OFF keying for ACK channel v/s bi-polar keying used in IS-856, and/or multi-valued interpretation of DRC.

公开(公告)号：NO20041990A

公开(公告)日：2004-07-05

申请号：NO20041990

申请日：2004-05-14

Applicant: QUALCOMM INC

Inventor： VIJAYAN RAJIV ,  SINDHUSHAYANA NAGABHUSHANA T ,  WU QIANG ,  BLACK PETER J ,  ATTAR RASHID A

IPC: H04J13/00 ,  H04B7/04 ,  H04B7/204 ,  H04B7/26 ,  H04L12/56 ,  H04Q1/00 ,  H04W16/24 ,  H04W24/00 ,  H04W36/06 ,  H04Q7/38

CPC classification number: H04W36/06 ,  H04B7/0491 ,  H04W16/24

公开(公告)号：NO20041990D0

公开(公告)日：2004-05-14

申请号：NO20041990

申请日：2004-05-14

Applicant: QUALCOMM INC

Inventor： VIJAYAN RAJIV ,  SINDHUSHAYANA NAGABHUSHANA T ,  WU QIANG ,  BLACK PETER J ,  ATTAR RASHID A

IPC: H04J13/00 ,  H04B7/04 ,  H04B7/204 ,  H04B7/26 ,  H04L12/56 ,  H04Q1/00 ,  H04W16/24 ,  H04W24/00 ,  H04W36/06 ,  H04B

Abstract: An apparatus for selecting a best serving sector in a code division multiple access (CDMA) communication system. A comparator compares a plurality of signal levels received from a plurality of active sectors with a signal level of a current serving sector to produce a difference. A delta generator is coupled to the comparator that generates a delta credit for each of the plurality of active sectors based on the difference. An accumulator is coupled to the delta generator and accumulates a plurality of delta credits to produce an accumulated total credit. A best sector identifier that is coupled to the accumulator identifies the best serving sector from the accumulated total credit.

公开(公告)号：NO20024910D0

公开(公告)日：2002-10-11

申请号：NO20024910

申请日：2002-10-11

Applicant: QUALCOMM INC

Inventor： JALALI AHMAD ,  ESTEVES EDUARDO A S ,  SINDHUSHAYANA NAGABHUSHANA T ,  BLACK PETER J ,  ATTAR RASHID A

IPC: H04L1/16 ,  H04L1/18 ,  H04Q7/38 ,  H04L

Abstract: A method for wireless communication, comprising: receiving data in multiple forward link timeslots; determining a quality metric of the received data; requesting retransmission of the data via a first request scheme if the quality metric indicates the data has not been received correctly; and if retransmission is requested and the data is not received correctly, requesting retransmission of the data via a second request scheme.

公开(公告)号：WO2007101209A3

公开(公告)日：2007-11-01

申请号：PCT/US2007062897

申请日：2007-02-27

Applicant: QUALCOMM INC ,  ATTAR RASHID A ,  BLACK PETER J ,  GURELLI MEHMET ,  YAVUZ MEHMET ,  BHUSHAN NAGA

Inventor： ATTAR RASHID A ,  BLACK PETER J ,  GURELLI MEHMET ,  YAVUZ MEHMET ,  BHUSHAN NAGA

IPC: H04L12/56 ,  H04L1/00 ,  H04L1/20

CPC classification number: H04L1/0017 ,  H04L1/0002 ,  H04L1/0021 ,  H04L1/20 ,  H04L47/50 ,  H04W28/18 ,  H04W72/1236 ,  H04W72/1242

Abstract: Embodiments disclosed here relate to scheduling packet transmission in a multi-carrier communication system. In an embodiment, a master scheduler having at least one processor and at least one memory operably connected to the at least one processor is adapted to execute instructions stored in the at least one memory, the instructions comprising selecting a packet with a highest packet metric from among candidate packets from one carrier of a plurality of carriers, whereby expedited forwarding flows do not have a higher metric on another carrier.

Abstract translation: 这里公开的实施例涉及在多载波通信系统中调度分组传输。 在一个实施例中，具有至少一个处理器和可操作地连接到所述至少一个处理器的至少一个存储器的主调度器适于执行存储在所述至少一个存储器中的指令，所述指令包括选择具有最高分组度量的分组 在来自多个载波中的一个载波的候选分组中，由此快速转发流在另一个载波上不具有更高的度量。

公开(公告)号：WO0182521A3

公开(公告)日：2002-05-16

申请号：PCT/IB0100976

申请日：2001-04-18

Applicant: QUALCOMM INC

Inventor： SINDHUSHAYANA NAGABHUSHANA T ,  ATTAR RASHID A ,  ESTEVES EDUARDO A S

IPC: H04J13/04 ,  H04L1/00 ,  H04L1/20

CPC classification number: H04L1/0021 ,  H04L1/0002 ,  H04L1/0016 ,  H04L1/002 ,  H04L1/0025 ,  Y02D50/10

Abstract: A method and an apparatus for rate control in a high data rate (HDR) communication system are disclosed. An exemplary HDR communication system defines a set of data rates, at which an access point (AP) may send data packets to an access terminal (AT). The data rate is selected to maintain targeted packet error rate (PER). The AT's open loop algorithm measures received signal to interference and noise ratio (SINR) at regular intervals, and uses the information to predict an average SINR over the next packet duration. The AT's closed loop algorithm measures a packet error rate (PER) of the received signal, and uses the PER to calculate a closed loop correction factor. The loop correction factor is added to the SINR value predicted by the open loop, resulting in an adjusted SINR. The AT maintains a look up table, which comprises a set of SINR thresholds that represent a minimum SINR necessary to successfully decode a packet at each data rate. The AT uses the adjusted set of SINR thresholds in the look up table to select the highest data rate, the SINR threshold of which is below the predicted SINR. The AT then requests, over the reverse link, that the AP send the next packet at this data-rate.

Abstract translation: 公开了一种用于高数据速率（HDR）通信系统中的速率控制的方法和装置。 示例性HDR通信系统定义了一组数据速率，接入点（AP）可在该组数据速率上向接入终端（AT）发送数据分组。 选择数据速率以维持目标分组错误率（PER）。 AT的开环算法以规则的间隔测量接收信号与干扰和噪声比（SINR），并且使用该信息来预测下一个分组持续时间内的平均SINR。 AT的闭环算法测量接收信号的分组错误率（PER），并使用PER计算闭环校正因子。 循环校正因子加到由开环预测的SINR值，得到调整后的SINR。 AT维护查找表，其包括一组SINR阈值，其表示在每个数据速率下成功解码分组所需的最小SINR。 AT在查找表中使用调整后的SINR阈值组来选择SINR阈值低于预测SINR的最高数据速率。 AT然后通过反向链路请求AP以该数据速率发送下一个分组。

公开(公告)号：WO2004045239A3

公开(公告)日：2004-09-23

申请号：PCT/US0336085

申请日：2003-11-07

Applicant: QUALCOMM INC

Inventor： ATTAR RASHID A ,  LOTT CHRISTOPHER G

IPC: H04L12/56 ,  H04W28/22 ,  H04W72/08 ,  H04Q7/38

CPC classification number: H04W28/22 ,  H04W24/00

Abstract: Reverse Link (RL) data rate allocation in a High Data Rate (such as 1xEV-DO) system as a function of Forward Link (FL) channel quality. Rate shaping of a throughput profile for multiple Access Terminals (ATs) is performed by adjusting transition probabilities associated with a data rate allocation algorithm. The RL maximum data rate per AT is adjusted to reduce the loading in a designated area and result in rate shaping of the cell and/or sector. In one embodiment, the maximum data rates are adjusted as a function of the FL Signal to Interference and Noise Ratio (SINR), such as measured per serving sector or as a captured sum total of FL SINR. In still another embodiment, the maximum data rates are adjusted as a function of differences in rise­over-thermal values between neighboring sectors.

Abstract translation: 作为前向链路（FL）信道质量的函数，在高数据速率（例如1xEV-DO）系统中的反向链路（RL）数据速率分配。 通过调整与数据速率分配算法相关联的转换概率来执行多个接入终端（AT）的吞吐量概况的速率整形。 调整每个AT的RL最大数据速率以减少指定区域中的负载并导致小区和/或扇区的速率整形。 在一个实施例中，最大数据速率根据FL信号与干扰和噪声比（SINR）（例如每个服务扇区测量的）或捕获的FL SINR的总和来调整。 在又一个实施例中，根据相邻扇区之间的上升过热值的差异来调整最大数据速率。

公开(公告)号：WO0199385A2

公开(公告)日：2001-12-27

申请号：PCT/US0141051

申请日：2001-06-18

Applicant: QUALCOMM INC

Inventor： SINDHUSHAYANA NAGABHUSHANA T ,  ESTEVES EDUARDO A S ,  ATTAR RASHID A ,  WU QIANG

IPC: H04J13/04 ,  H04L1/00 ,  H04Q7/38 ,  H04L100

CPC classification number: H04L1/0002

Abstract: A method and an apparatus for adaptive data rate selection in a high data rate (HDR) communication system are disclosed. An exemplary HDR communication system defines a set of data rates, at which an access point (AP) may transmit data packets to an access terminal (AT). The transmission data rate is selected to maintain target packet error rate (PER). Each AT monitors signal quality metric of signals received from APs. An AT receiving forward link signals from multiple ATs identifies the AT associated with the highest quality forward link signal. The AT then evaluates the rate at which a tail probability of error is greater than or equal to a target tail probability of error. The AT then generates a prediction of a first data rate at which the PER of packets received from the identified AP will not exceed the target PER, and a prediction of a second data rate at which the PER of packets received from the selected AP will exceed the target PER. The AT uses the values of the first and second data rates to predict probabilities of selecting the first and the second data rates such that a throughput of the HDR system is maximized and the target PER is achieved. The predicted probabilities are then utilized as biases for a method identifying whether the first data rate or the second data rate will be requested from the AP. The disclosed method and apparatus may be extended to the full set of available data rates.

Abstract translation: 公开了一种在高数据速率（HDR）通信系统中进行自适应数据速率选择的方法和装置。 示例性HDR通信系统定义了一组数据速率，接入点（AP）可在该组数据速率上向接入终端（AT）发送数据分组。 选择传输数据速率以维持目标分组错误率（PER）。 每个AT监视从AP接收的信号的信号质量度量。 从多个AT接收前向链路信号的AT识别与最高质量的前向链路信号相关联的AT。 AT然后评估误差的概率大于或等于目标尾部误差概率的速率。 然后，AT产生对从所识​​别的AP接收的分组的PER不超过目标PER的第一数据速率的预测，以及从所选择的AP接收的分组的PER将超过的第二数据速率的预测 目标PER。 AT使用第一和第二数据速率的值来预测选择第一和第二数据速率的概率，使得HDR系统的吞吐量最大化并且实现目标PER。 然后，将预测概率用作用于识别从AP请求第一数据速率或第二数据速率的方法的偏差。 所公开的方法和装置可以扩展到全部可用数据速率。