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1.发明授权Methods and apparatuses for allocating time slots to half duplex wireless mobile stations 有权为半双工无线移动台分配时隙的方法和装置公开(公告)号：US07352714B2
公开(公告)日：2008-04-01
申请号：US10252797
申请日：2002-09-24
申请人： Krishna Balachandran , Kirk K. Chang , Wei Luo , Sanjiv Nanda
发明人： Krishna Balachandran , Kirk K. Chang , Wei Luo , Sanjiv Nanda
IPC分类号： H04B7/212
CPC分类号： H04W72/0446
摘要： Methods and apparatuses for allocating control and data time slots to a plurality of wireless mobile stations in a wireless communication system using time division multiplexing. The methods and apparatuses assign such time slots by first placing the wireless mobile stations into a number of different groups. Then, control time slots and anchor data time slots are assigned to the groups in the uplink and downlink frames of a carrier such that the uplink control time slot for each group is maximally spaced in time relative to the downlink control time slot for the same group. Data time slots are subsequently assigned to a particular mobile station by assigning time slots in the uplink and downlink frames which are as close as possible to the group's uplink or downlink anchor data time slots, as the case may be, according to a “grow from center” technique.
摘要翻译： 在使用时分复用的无线通信系统中，向多个无线移动站分配控制和数据时隙的方法和装置。 所述方法和装置通过首先将无线移动站放置到多个不同的组中来分配这样的时隙。 然后，将控制时隙和锚数据时隙分配给载波的上行链路和下行链路中的组，使得每个组的上行链路控制时隙相对于相同组的下行链路控制时隙在时间上最大间隔 。 随后，通过分配尽可能接近组的上行链路或下行链路锚定数据时隙（根据情况可能）的上行链路和下行链路帧中的时隙，随后将数据时隙分配给特定的移动台。 中心“技术。
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公开(公告)号：US06567375B2
公开(公告)日：2003-05-20
申请号：US09750834
申请日：2000-12-29
IPC分类号： A04Q700
CPC分类号： H04L1/0009 , H04L1/0003 , H04L1/0007 , H04L1/0018 , H04L1/1812
摘要： Unlike earlier methods and systems in which Radio Link Control (RLC) performance was characterized in terms of the throughput, and the size of the higher layer Protocol Data Units (PDUs) or packets to be transferred was ignored, a method and apparatus is provided that is based on the delay of a higher layer PDU or packet. A method and apparatus so based have less delay than a method and apparatus based on employing adaptive coding and modulation to achieve the greatest mean throughput of a data block.
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公开(公告)号：US07068619B2
公开(公告)日：2006-06-27
申请号：US09847567
申请日：2001-05-02
IPC分类号： H04Q7/00
CPC分类号： H04L1/1838 , H04L1/0068 , H04L1/1819 , H04L1/189
摘要： In a mobile station-mobile receiver arrangement a method and apparatus for a radio link control (RLC) protocol that allows partial recovery of data for streaming services. The maximum number of retransmissions allowed by the method for each RLC block is a function of the maximum delivery delay required by the streaming service and the round trip delay.
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4.发明授权Methods and devices for scheduling transmissions in interference-limited networks 有权用于在干扰受限网络中调度传输的方法和装置公开(公告)号：US06990104B1
公开(公告)日：2006-01-24
申请号：US09632215
申请日：2000-08-03
IPC分类号： H04L12/28
CPC分类号： H04W72/1242 , H04L47/24 , H04L47/50 , H04L47/56 , H04L47/6225 , H04W24/06 , H04W72/1226
摘要： Uplinked and downlinked transmissions in an interference-limited system, such as a cellular network, are prioritized and authorized by channel quality/data rate to minimize interference.
摘要翻译： 在诸如蜂窝网络的干扰受限系统中的上行链路和下行链路传输被优先化并且被信道质量/数据速率授权以最小化干扰。
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5.发明授权Method and apparatus for determining channel conditions in a communication system 失效用于确定通信系统中的信道状况的方法和装置公开(公告)号：US07020185B1
公开(公告)日：2006-03-28
申请号：US09724231
申请日：2000-11-28
申请人： Krishna Balachandran , Sanjiv Nanda
发明人： Krishna Balachandran , Sanjiv Nanda
IPC分类号： H04B1/38
CPC分类号： H04W52/20 , H04B17/345
摘要： One example of symbol or bit error probability estimation in a communication system using soft decision information determines soft decision metric(s) for each symbol that is received over a communication channel and employs the soft decision metric(s) to obtain an estimate of symbol or bit error probability.
摘要翻译： 使用软判决信息的通信系统中的符号或位错误概率估计的一个例子确定通过通信信道接收的每个符号的软判决度量，并采用软判决度量来获得符号或 位错误概率。
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6.发明授权System for statistically multiplexing real-time and non-real-time voice and data traffic in a wireless system 有权用于统计复用无线系统中实时和非实时语音和数据业务的系统公开(公告)号：US06963544B1
公开(公告)日：2005-11-08
申请号：US09651717
申请日：2000-08-31
CPC分类号： H04B7/2612
摘要： A system for providing statistical multiplexing of speech, other real-time data services and non-real-time data services for point to point and point to multipoint communications. The system has fast access and assignment procedures that allow the multiplexing of real-time, delay-critical data services with non-real-time data services. Continuity of periodic control channels across speech talkspurt and silence periods for conversational voice is maintained to carry signal measurement reports, channel quality feedback, and “comfort” noise information between different parts of the system.
摘要翻译： 提供用于点对点和点对多点通信的语音，其他实时数据服务和非实时数据服务的统计复用的系统。 该系统具有快速的访问和分配过程，允许实时，延迟关键的数据服务与非实时数据服务的复用。 保持语音对话突发周期性控制信道和对话话音静音期间的连续性，以便在系统的不同部分之间传送信号测量报告，信道质量反馈和“舒适”噪声信息。
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公开(公告)号：US6108374A
公开(公告)日：2000-08-22
申请号：US921454
申请日：1997-08-25
IPC分类号： H04L27/00 , H03M13/23 , H04B7/26 , H04B17/00 , H04L1/00 , H04L1/12 , H04L1/20 , H04L27/18 , H04L27/34 , H04W36/30 , H04W72/08 , H04B3/46 , H04Q1/20
CPC分类号： H04L1/006 , H04L1/0009 , H04L1/0015 , H04L1/0026 , H04L1/0054 , H04L1/20 , H04L1/12 , H04W36/30 , H04W72/08
摘要： A system and method to measure channel quality in terms of signal to noise ratio for the transmission of coded signals over fading channels. A Viterbi decoder metric for the Maximum Likelihood path is used as a channel quality measure. This Euclidean distance metric is filtered in order to smooth out short term variations. The filtered or averaged metric is a reliable channel quality measure which remains consistent across different coded modulation schemes and at different mobile speeds. The filtered metric is mapped to the signal to noise ratio per symbol using a threshold based scheme. Use of this implicit signal to noise ratio estimate is used for the mobile assisted handoff and data rate adaptation in the transmitter.
摘要翻译： 一种用于在衰落信道上传输编码信号的信噪比测量信道质量的系统和方法。 用于最大似然路径的维特比解码度量用作信道质量度量。 过滤欧几里德距离度量以平滑短期变化。 滤波或平均度量是可靠的信道质量度量，其在不同的编码调制方案和不同的移动速度下保持一致。 使用基于阈值的方案将经滤波的度量映射到每个符号的信噪比。 使用这种隐式信噪比估计用于发射机中的移动辅助切换和数据速率适配。
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8.发明授权公开(公告)号：US06996083B1
公开(公告)日：2006-02-07
申请号：US09650792
申请日：2000-08-30
CPC分类号： H04B7/2643
摘要： A method and system for reducing delay in wireless communications by use of a burst based access and assignment system. The method for setting up a communication channel uses short burst(s) (essentially a slot of a time frame). Time is saved by keeping the uplink and downlink channels flexible and independent of each other. Thus less time is used trying to fit all requests and responses into constrained choices as in previous protocols. The result is less delay to the mobile user and greater usage density for the wireless service provider.
摘要翻译： 一种通过使用基于突发的接入和分配系统来减少无线通信延迟的方法和系统。 用于建立通信信道的方法使用短突发（基本上是时间帧的时隙）。 通过保持上行链路和下行链路信道彼此灵活和独立来节省时间。 因此，像以前的协议一样，尝试将所有请求和响应都设置为约束选择的时间更少。 结果是对于移动用户的延迟较小，并且无线服务提供商的使用密度更高。
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9.发明授权System and method for link and media access control layer transaction initiation procedures 有权链接和媒体访问控制层事务发起程序的系统和方法公开(公告)号：US06625133B1
公开(公告)日：2003-09-23
申请号：US09283312
申请日：1999-03-31
申请人： Krishna Balachandran , Richard P. Ejzak , Sanjiv Nanda , Shiv M. Seth , Stanley Vitebsky , William Waung
发明人： Krishna Balachandran , Richard P. Ejzak , Sanjiv Nanda , Shiv M. Seth , Stanley Vitebsky , William Waung
IPC分类号： H04Q738
CPC分类号： H04L29/06 , H04L1/0003 , H04L1/0025 , H04L1/1819 , H04L69/32 , H04L69/324
摘要： A system and method of implementing a radio link protocol and dynamic partial echo management for a transaction oriented packet data communication system. A data backlog is described with a media access control layer controller and transmitting a BEGIN protocol data unit transmitted to a receiver. A media access control layer transaction is initiated in response to the transmitting of the BEGIN frame.
摘要翻译： 一种为面向事务的分组数据通信系统实现无线电链路协议和动态部分回声管理的系统和方法。 用媒体访问控制层控制器描述数据积压，并发送传输到接收器的BEGIN协议数据单元。 响应于BEGIN帧的发送，发起媒体访问控制层事务。
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10.发明授权System and method for measuring channel quality information in a communication system 失效用于测量通信系统中信道质量信息的系统和方法公开(公告)号：US06215827B1
公开(公告)日：2001-04-10
申请号：US09044636
申请日：1998-03-19
IPC分类号： H04L2302
CPC分类号： H04L1/0015 , H04L1/0003 , H04L1/0009 , H04L1/0026 , H04L1/0054 , H04L1/006 , H04L1/12 , H04L1/20 , H04W36/30 , H04W72/08
摘要： A system and method to measure channel quality in terms of signal to interference plus noise ratio for the transmission of coded signals over fading channels in a communication system. A Viterbi decoder metric for the Maximum Likelihood path is used as a channel quality measure for coherent and non-coherent transmission schemes. This Euclidean distance metric is filtered in order to smooth out short term variations. The filtered or averaged metric is a reliable channel quality measure which remains consistent across different coded modulation schemes speeds. The filtered metric is mapped to the signal to interference plus noise ratio per symbol using a threshold based scheme. Use of this implicit signal to interference plus noise ratio estimate is used for the mobile assisted handoff in a cellular system, power control and data rate adaptation in the transmitter.
摘要翻译： 一种用于在通信系统中通过衰落信道传输编码信号的信噪比加噪声比来测量信道质量的系统和方法。 用于最大似然路径的维特比解码器度量用作相干和非相干传输方案的信道质量测量。 过滤欧几里德距离度量以平滑短期变化。 滤波或平均的度量是可靠的信道质量度量，其在不同的编码调制方案速度下保持一致。 使用基于阈值的方案将经滤波的度量映射到每个符号的信号与干扰加噪声比。 使用这种隐含信号对干扰加噪声比估计用于蜂窝系统中的移动辅助切换，发射机中的功率控制和数据速率适配。
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