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1. 发明授权

US06631127B1 Apparatus and method for dynamically selecting an ARQ method 有权
标题翻译：动态选择ARQ方法的装置和方法
公开(公告)号：US06631127B1
公开(公告)日：2003-10-07
申请号：US10157619
申请日：2002-05-29
申请人： Mansoor Ahmed , Kamyar Rohani , Kevin M. Laird
发明人： Mansoor Ahmed , Kamyar Rohani , Kevin M. Laird
IPC分类号： H04J324
CPC分类号： H04L1/0068 , H04L1/0003 , H04L1/0026 , H04L1/1819 , H04L1/1825
摘要： A method 600 of selecting an ARQ method for retransmitting a data frame based on an accumulated signal to noise ratio (SNR) of systematic bits in the data frame at a receiving unit 508. The sending unit 500 tracks the accumulated SNR of systematic bits by using channel SNR measurement reports sent by the receiving unit 508. The method utilizes Chase combining of re-transmitted systematic bits (via Partial incremental redundancy transmissions) until the accumulated SNR of the systematic bits has reached a suitable value, and then switches to sending only parity bits (via Full incremental redundancy) in retransmissions. In addition, the method alters the allocation of resources, such as code power, to provide only that necessary for successful decoding of the transmitted frame. The sending unit 500 informs the receiving unit 508 of the type of transmission, number of the transmission and/or resource allocation associated with the data frame.
摘要翻译：一种方法600，其基于在接收单元508处的数据帧中的系统比特的累积信噪比（SNR）来选择用于重传数据帧的ARQ方法。发送单元500通过使用信道SNR测量报告。该方法利用重新发送的系统比特（经由部分增量冗余传输）的Chase组合，直到系统比特的累积SNR已经达到合适的值，然后切换到仅发送奇偶校验重传中的位（通过完全增量冗余）。此外，该方法改变诸如代码功率的资源分配，以仅提供成功解码传输帧所需的资源。发送单元500向接收单元508通知传输类型，与数据帧相关联的传输和/或资源分配的数量。

2. 发明授权

US6064659A Method and system for allocating transmit power to subscriber units in a wireless communications system 失效
标题翻译：在无线通信系统中向用户单元分配发射功率的方法和系统
公开(公告)号：US6064659A
公开(公告)日：2000-05-16
申请号：US113391
申请日：1998-07-10
申请人： Kamyar Rohani , Mansoor Ahmed
发明人： Kamyar Rohani , Mansoor Ahmed
IPC分类号： H04B7/26 , H04B7/005 , H04B7/00
CPC分类号： H04W52/283 , H04W52/281 , H04W52/343 , H04W52/346
摘要： In a transceiver in a wireless communications system, data is transmitted from the transceiver to subscriber units, wherein each subscriber unit has a requested transmit power and an allocated transmit power, and wherein the allocated transmit power is based upon the requested transmit power. A request for an additional power allocation is detected, wherein such additional allocation causes a total requested power to exceed a maximum transceiver power. In response, allocated transmit power is limited for a minimum number of selected subscriber units needed to reduce a total transceiver transmit power below the maximum transceiver power.
摘要翻译：在无线通信系统中的收发器中，数据从收发机发送到用户单元，其中每个用户单元具有所请求的发射功率和分配的发射功率，并且其中所分配的发射功率是基于所请求的发射功率。检测到额外功率分配的请求，其中这种附加分配导致总请求功率超过最大收发机功率。作为响应，分配的发射功率对于将总收发器发射功率降低到最大收发器功率所需的最小数量的所选择的用户单元是有限的。

3. 发明授权

US5946346A Method and system for generating a power control command in a wireless communication system 失效
标题翻译：一种用于在无线通信系统中产生功率控制命令的方法和系统
公开(公告)号：US5946346A
公开(公告)日：1999-08-31
申请号：US946210
申请日：1997-10-07
申请人： Mansoor Ahmed , Louay Jalloul , Kamyar Rohani
发明人： Mansoor Ahmed , Louay Jalloul , Kamyar Rohani
IPC分类号： H04L27/00 , H04B7/005 , H04B7/06 , H04B7/08 , H04B7/26 , H04L1/00 , H04L1/20 , H04B1/38
CPC分类号： H04W52/12 , H04B7/0814 , H04L1/20 , H04B7/0615 , H04W52/20 , H04W52/24 , Y02B60/50
摘要： In a wireless communication system using a power control command to control power of a transmitted traffic channel (58), a signal from a transmitter (64) is received (104) via a channel. A channel quality is measured (70, 108) using the signal from the transmitter. In response to the measured channel quality (70) exceeding (80, 110) a channel quality threshold (82), a decrease traffic channel power command is sent (112) to the transmitter, and a channel quality threshold is increased (114). In response to the channel quality threshold (82) exceeding (80, 110) the measured channel quality (70), an increase traffic channel power command is sent (116) to the transmitter, and the channel quality threshold is decreased (118). A traffic signal quality may be measured (72) and compared (88) to a traffic signal quality threshold (86). The result of the comparison (132) may be used to adjust (134) the channel quality threshold (82). The traffic signal quality threshold may be adjusted (90, 126, 128) in response to whether or not a frame error is detected (74, 124).
摘要翻译：在使用功率控制命令来控制所发射的业务信道（58）的功率的无线通信系统中，来自发射机（64）的信号经由信道被接收（104）。使用来自发射机的信号测量信道质量（70,108）。响应于测量的信道质量（70）超过（80,110）信道质量阈值（82），向发射机发送减少的业务信道功率命令（112），并增加信道质量阈值（114）。响应于超过（80,110）所测量的信道质量（70）的信道质量阈值（82），向发射机发送增加业务信道功率命令（116），并减少信道质量阈值（118）。可以测量交通信号质量（72）并将其与交通信号质量阈值（86）进行比较（88）。比较（132）的结果可以用于调整（134）信道质量阈值（82）。响应于是否检测到帧错误（74,124），可以调整交通信号质量阈值（90,126,128）。

4. 发明授权

US06754475B1 Transmission performance measurement and use thereof 有权
标题翻译：传输性能测量及其使用
公开(公告)号：US06754475B1
公开(公告)日：2004-06-22
申请号：US10185974
申请日：2002-06-28
申请人： Robert Mark Harrison , Kamyar Rohani , Srikanth Gummadi
发明人： Robert Mark Harrison , Kamyar Rohani , Srikanth Gummadi
IPC分类号： H03C162
CPC分类号： H04L1/0001 , H04B7/04 , H04B7/0615 , H04B7/0689 , H04L1/0025 , H04L1/0026
摘要： A method for and wireless communications unit adapted for measuring transmission performance for a signal emanating from an antenna is discussed. The wireless communications unit includes a receiver for receiving the signal in a first and a second time interval to provide, respectively, a first and a second signal; and a channel processor for assessing a relative channel metric corresponding to the first and second signal, the relative channel metric indicative of the transmission performance of a transmission mode. A corresponding method and base transmitter is also arranged and adapted for adjusting a transmission mode based on measured transmission performance and includes a transmitter for sending the signal in the first and second time interval and a base channel processor for determining a channel metric corresponding to the first and second signal, the channel metric indicative of the transmission performance; the transmitter further sending a control signal corresponding to the transmission mode adjusted according to the transmission performance.
摘要翻译：讨论了一种用于测量从天线发出的信号的传输性能的方法和无线通信单元。无线通信单元包括接收器，用于在第一和第二时间间隔中接收信号以分别提供第一和第二信号; 以及信道处理器，用于评估对应于第一和第二信号的相对信道度量，表示传输模式的传输性能的相对信道度量。相应的方法和基站发射机也被布置并适于基于测量的传输性能来调整传输模式，并且包括用于在第一和第二时间间隔内发送信号的发射机和用于确定与第一和第二时间间隔对应的信道度量的基本信道处理器和第二信号，表示传输性能的信道度量; 发射机进一步发送对应于根据传输性能调整的传输模式的控制信号。

5. 发明授权

US06195342B1 Method for determining hand-off candidates in a neighbor set in a CDMA communication system 失效
标题翻译：用于确定CDMA通信系统中的相邻集合中的切换候选的方法
公开(公告)号：US06195342B1
公开(公告)日：2001-02-27
申请号：US08977913
申请日：1997-11-25
申请人： Kamyar Rohani
发明人： Kamyar Rohani
IPC分类号： H04J306
CPC分类号： H04W36/30 , H04B17/318 , H04B17/382 , H04W36/32
摘要： A CDMA communication system (400) includes a plurality of base stations (410, 420 and 430) transmitting at least a corresponding plurality of pilot signals. A mobile station (401) in a coverage area of the system (400) receives at least one of the plurality of pilot signals and transmits a Pilot Strength Measurement Message that includes a Neighbor Set of a list of a plurality of candidate pilots for a and-off routine. A method and apparatus for determining the Neighbor Set includes finding a location of the mobile station (401) in the coverage area of system (400) and determining the list of plurality of candidate pilots in the Neighbor Set according to the location of the mobile station (401).
摘要翻译： CDMA通信系统（400）包括发送至少相应的多个导频信号的多个基站（410,420和430）。系统（400）的覆盖区域中的移动站（401）接收多个导频信号中的至少一个，并发送导频强度测量消息，该导频强度测量消息包括用于a和b的多个候选导频列表的邻居集合关闭例程。用于确定邻居集的方法和装置包括：在系统（400）的覆盖区域中找到移动站（401）的位置，并根据移动站的位置确定邻居集中的多个候选导频的列表（401）。

6. 发明授权

US5594757A Method and apparatus for digital automatic frequency control 失效
标题翻译：数字自动频率控制方法和装置
公开(公告)号：US5594757A
公开(公告)日：1997-01-14
申请号：US281945
申请日：1994-07-28
申请人： Kamyar Rohani
发明人： Kamyar Rohani
IPC分类号： H04L1/20 , H04L7/00 , H04L27/00 , H04L27/06 , H04L27/233
CPC分类号： H04L27/2332 , H04L1/206 , H04L27/066 , H04L2027/003 , H04L2027/0053
摘要： A method and apparatus for digital automatic frequency control includes circuitry for frequency controlling a first information portion of a digital input signal, correlating the output with a known characteristic of the first information portion, and outputting a timing signal and channel estimation signal. The digital input signal is also decimated using the timing signal and frequency controlled into a frequency controlled output signal. This signal is used, along with a signal quality estimate derived from the channel estimation signal and first information portion, to determine an estimated frequency correction signal. The estimated frequency correction signal is used to control the frequency correction steps.
摘要翻译：一种用于数字自动频率控制的方法和装置包括用于频率控制数字输入信号的第一信息部分的电路，将输出与第一信息部分的已知特性相关联，并输出定时信号和信道估计信号。数字输入信号也使用定时信号和频率被控制成频率控制输出信号。使用该信号以及从信道估计信号和第一信息部分导出的信号质量估计，以确定估计的频率校正信号。估计的频率校正信号用于控制频率校正步骤。

7. 发明授权

US5493563A Method and apparatus for mobile assisted handoff in a communication system 失效
标题翻译：通信系统中移动辅助切换的方法和装置
公开(公告)号：US5493563A
公开(公告)日：1996-02-20
申请号：US97499
申请日：1993-07-26
申请人： Walt Rozanski , Kamyar Rohani
发明人： Walt Rozanski , Kamyar Rohani
IPC分类号： H04W36/30 , H04J3/16
CPC分类号： H04W36/30
摘要： A communication system utilizes rotated bursts of voice channels to implement mobile assisted handoff (MAHO). Mobile stations measure the voice channels of adjacent cells as hopping frequencies are rotated from frame-to-frame of the communication system. Measurement of the voice channels of adjacent cells can be performed by mobile stations during timeslots subsequent to their receive and transmission so that measurement during a timeslot dedicated to a control channel related to the adjacent cells is not necessary.
摘要翻译：通信系统利用旋转的语音信道突发来实现移动辅助切换（MAHO）。当跳频从通信系统的帧到帧旋转时，移动站测量相邻小区的话音信道。相邻小区的语音信道的测量可以由移动台在其接收和发送之后的时隙期间执行，使得在专用于与相邻小区相关的控制信道的时隙中的测量不是必需的。

8. 发明授权

US05999522A Method and apparatus for determining hand-off candidates in a communication system 失效
标题翻译：用于在通信系统中确定切换候选的方法和装置
公开(公告)号：US05999522A
公开(公告)日：1999-12-07
申请号：US978559
申请日：1997-11-26
申请人： Kamyar Rohani
发明人： Kamyar Rohani
IPC分类号： H04W16/24 , H04W36/06 , H04W36/26 , H04W36/30 , H04Q7/00
CPC分类号： H04W36/06 , H04W16/24 , H04W36/26 , H04W36/30
摘要： A communication system provides wireless communication in a coverage area and includes a base station (100) and a mobile station (290). The base station (100) has a plurality of sectors (210, 220, 230, 240, 250, 260) where a corresponding plurality of pilot signals (212, 222, 232, 242, 252, 262) are transmitted. A sector (210) transmits a forward link signal (211) for communicating to the mobile station (290). The mobile station (290) transmits a reverse link signal (215) and a message signal including a list of a plurality of candidate sectors for a soft hand-off routine. A method and apparatus of determining the candidate list includes measuring reverse link signal (215) which are received at said plurality of sectors. Then, comparing reverse link signal level received at sector (210) to the reverse link signal levels received at all other sectors of said plurality of sectors (210, 220, 230, 240, 250, 260). Finally, the candidate list is determined according to a result of comparing the reverse link signal levels.
摘要翻译：通信系统在覆盖区域中提供无线通信，并且包括基站（100）和移动站（290）。基站（100）具有多个扇区（210,220,230,240,250,260），其中相应的多个导频信号（212,222,232,242,252,262）被发送。扇区（210）发送用于与移动台（290）进行通信的前向链路信号（211）。移动站（290）发送反向链路信号（215）和包括用于软切换例程的多个候选扇区的列表的消息信号。确定候选列表的方法和装置包括测量在所述多个扇区处接收的反向链路信号（215）。然后，比较在扇区（210）处接收的反向链路信号电平与在所述多个扇区（210,220,230,240,250,260）的所有其他扇区处接收的反向链路信号电平。最后，根据比较反向链路信号电平的结果确定候选列表。

9. 发明授权

US5629934A Power control for CDMA communication systems 失效
标题翻译： CDMA通信系统的功率控制
公开(公告)号：US5629934A
公开(公告)日：1997-05-13
申请号：US491336
申请日：1995-06-30
申请人： Amitava Ghosh , Kamyar Rohani
发明人： Amitava Ghosh , Kamyar Rohani
IPC分类号： H04B7/005 , H04B7/26 , H04W36/18 , H04W48/06 , H04J13/00
CPC分类号： H04W52/267 , H04W48/06 , H04W36/18
摘要： A transmitter transmits the desired signal using a continuous duty cycle at transmission rates of less than full rate (FIG. 6 ). The energy used in each power control group is related to the transmission rate. By repeating the power control groups, time division diversity (FIG. 6 ) is provided. In the receiver, the received power control groups are analyzed and compared to several levels of energy thresholds (73, 75, 77, 79). The results of the comparisons are converted into a power control signal (74, 76, 78, 80, 81) and returned to the mobile. The mobiles are capable of selecting the appropriate bit (93) and adjusting their power (94). Alternatively, an indicator of the transmission rate can be forwarded (155) in advance of the frame. The receiver compares a power estimate with the threshold for the transmission rate indicated (166).
摘要翻译：发射机使用小于全速率的传输速率的连续占空比发射所需信号（图6）。每个功率控制组中使用的能量与传输速率有关。通过重复功率控制组，提供时分多路化（图6）。在接收机中，分析接收到的功率控制组并将其与几个能级阈值（73,75,77,79）进行比较。比较的结果被转换成功率控制信号（74,76,78,80,81）并返回到移动台。移动台能够选择适当的位（93）并调整其功率（94）。或者，可以在帧之前转发（155）传输速率的指示符。接收机将功率估计与所指示的传输速率的阈值进行比较（166）。

10. 发明授权

US5583886A Method for determining a plurality of channel responses and modifying a received signal therewith 失效
标题翻译：用于确定多个信道响应并用其修改接收信号的方法
公开(公告)号：US5583886A
公开(公告)日：1996-12-10
申请号：US985051
申请日：1992-12-03
申请人： Kamyar Rohani , Amitava Ghosh , R. Mark Harrison
发明人： Kamyar Rohani , Amitava Ghosh , R. Mark Harrison
IPC分类号： H04B7/005 , H04L25/02 , H04B3/46 , H04B17/00
CPC分类号： H04L25/0204 , H04B7/005
摘要： Each of a plurality of transmitters (31-37) transmits (62) one of a plurality of known signals. The known signals being known to a receiver (40). The receiver (40) then measures the known signals (63); and using those measurements, estimates the plurality of channel responses (64). The channel responses are then used to determine a power ratio parameter (65) and a phase correction parameter (66).
摘要翻译：多个发射机（31-37）中的每一个发射（62）多个已知信号中的一个。接收器（40）已知的已知信号。接收器（40）然后测量已知信号（63）; 并且使用这些测量来估计多个信道响应（64）。然后，通道响应用于确定功率比参数（65）和相位校正参数（66）。

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