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41. 发明申请

US20080151804A1 TRANSMISSION TECHNIQUE SELECTOR FOR RADIO COMMUNICATION SYSTEMS WITH MULTIPLE TRANSMIT AND MULTIPLE RECEIVE ANTENNAS 有权
标题翻译：用于具有多个发送和多个接收天线的无线电通信系统的传输技术选择器
公开(公告)号：US20080151804A1
公开(公告)日：2008-06-26
申请号：US11613349
申请日：2006-12-20
申请人： Fan Wang , Lawrence A. Downing , Amitava Ghosh , Chandrasekar Sankaran , Jun Tan
发明人： Fan Wang , Lawrence A. Downing , Amitava Ghosh , Chandrasekar Sankaran , Jun Tan
IPC分类号： H04H20/71 , G06F11/14 , H04J15/00 , G08C25/02
CPC分类号： H04B7/0689 , H04B7/0417 , H04B7/063 , H04B7/0669 , H04B7/0697 , H04H20/22 , H04H60/11
摘要： A radio communications device (102) that has multiple receive antennas processes received data communications signals to select between space time coding and spatial multiplexing as a selected transmission technique from a base device (104) that has multiple transmit antennas. A channel throughput (402-412, 450-454) for each transmission technique is estimated based on signal to interference and noise ratios (502-512, 550-554) of signals being transmitted through a MIMO channel (140) as measured by a receiver (708). The transmission technique with the higher estimated throughput is determined. If spatial multiplexing is determined to have the higher estimated throughput and the throughput of each layer of the spatially multiplexed signal is greater than a threshold, spatial multiplexing is selected. Otherwise, space time coding is selected.
摘要翻译：具有多个接收天线的无线电通信设备（102）处理接收到的数据通信信号，以从具有多个发射天线的基站设备（104）中选择在空间时间编码和空间复用之间作为所选择的传输技术。基于通过MIMO信道（140）发送的信号的信号与干扰和噪声比（502-512,550-554）来估计用于每个传输技术的信道吞吐量（402-412,450-445），如接收器（708）。确定具有较高估计吞吐量的传输技术。如果确定空间复用具有较高的估计吞吐量，并且空间复用信号的每层的吞吐量大于阈值，则选择空间复用。否则，选择空时编码。

42. 发明申请

US20070258540A1 METHOD AND APPARATUS FOR PROVIDING DOWNLINK ACKNOWLEDGMENTS AND TRANSMIT INDICATORS IN AN ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING COMMUNICATION SYSTEM 有权
标题翻译：用于在正交频分复用通信系统中提供下行链路确认和发送指示的方法和装置
公开(公告)号：US20070258540A1
公开(公告)日：2007-11-08
申请号：US11692400
申请日：2007-03-28
申请人： Rapeepat Ratasuk , Amitava Ghosh , Weimin Xiao
发明人： Rapeepat Ratasuk , Amitava Ghosh , Weimin Xiao
IPC分类号： H04L27/28
CPC分类号： H04L1/1861 , H04B1/707 , H04J11/005 , H04L5/0007 , H04L5/0016 , H04L5/0053 , H04L5/0091
摘要： A communication system provides downlink acknowledgments corresponding to uplink transmission using hybrid automatic repeat request to multiple users in an Orthogonal Frequency Division Multiplexing communication system, wherein a frequency bandwidth comprises multiple frequency sub-carriers, by spreading each acknowledgment of multiple acknowledgments with a selected spreading sequence of multiple spreading sequences to produce multiple spread acknowledgments, wherein each acknowledgment is intended for a different user of the multiple users, and distributing the multiple spread acknowledgments across the multiple frequency sub-carriers.
摘要翻译：通信系统使用混合自动重复请求向正交频分复用通信系统中的多个用户提供与上行链路传输相对应的下行链路确认，其中频率带宽包括多个频率子载波，通过用选定的扩展序列扩展多个确认的每个确认多个扩展序列以产生多个扩展确认，其中每个确认旨在用于多个用户的不同用户，并且在多个频率子载波之间分配多个扩展确认。

43. 发明申请

US20070058595A1 METHOD AND APPARATUS FOR REDUCING ROUND TRIP LATENCY AND OVERHEAD WITHIN A COMMUNICATION SYSTEM 审中-公开
标题翻译：用于减少通信系统中的循环延迟和覆盖的方法和装置
公开(公告)号：US20070058595A1
公开(公告)日：2007-03-15
申请号：US11276981
申请日：2006-03-20
申请人： Brian Classon , Kevin Baum , Amitava Ghosh , Robert Love , Vijay Nangia , Kenneth Stewart
发明人： Brian Classon , Kevin Baum , Amitava Ghosh , Robert Love , Vijay Nangia , Kenneth Stewart
IPC分类号： H04B7/212
CPC分类号： H04L1/188 , H04L1/1812 , H04L1/1822
摘要： During operation radio frames are divided into a plurality of subframes. Data is transmitted over the radio frames within a plurality of subframes, and having a frame duration selected from two or more possible frame durations.
摘要翻译：在操作期间，无线电帧被分成多个子帧。数据通过多个子帧内的无线电帧发送，并且具有从两个或更多个可能的帧持续时间中选择的帧持续时间。

44. 发明申请

US20060146756A1 Downlink resource allocation for time offset downlink packets 审中-公开
标题翻译：时间偏移下行链路数据包的下行链路资源分配
公开(公告)号：US20060146756A1
公开(公告)日：2006-07-06
申请号：US11026141
申请日：2004-12-30
申请人： Fan Wang , Amitava Ghosh , Robert Love
发明人： Fan Wang , Amitava Ghosh , Robert Love
IPC分类号： H04B7/216
CPC分类号： H04W52/286 , H04W52/04 , H04W52/223 , H04W52/281 , H04W52/325 , H04W52/346 , H04W52/367 , H04W72/04 , H04W72/1273
摘要： In a network, where a packet is to be transmitted on a channel to a communication device with a time offset between a shared control channel and a shared data channel, the packets can be ordered. A margin (301) can be determined (403) between a power need of a data channel of a packet and a total available transmit power (315) of the network infrastructure device. Scheduling packets (405) is responsive to the margin, and determines the next packet to be sent, where the control channel of the next packet has a power need less than the power margin. Resources are allocated (407) responsive to the margin to further determine the subsequent packet. The subsequent packet is transmitted (411) on the channel, wherein the data channel of the current packet and the control channel of the subsequent packet are at least partially contemporaneous.
摘要翻译：在网络中，其中要在信道上将数据包发送到具有共享控制信道和共享数据信道之间的时间偏移的通信设备，可以对该分组进行排序。可以在分组的数据信道的功率需求与网络基础设施设备的总可用发射功率（315）之间确定余量（301）（403）。调度分组（405）响应于余量，并确定下一个分组的下一个分组，其中下一个分组的控制信道的功率需要小于功率余量。响应于余量分配资源（407）以进一步确定后续分组。在信道上发送（411）随后的分组，其中当前分组的数据信道和后续分组的控制信道至少部分同时进行。

45. 发明申请

US20060099985A1 Apparatus and method for radio transmission in a cellular communication system 审中-公开
标题翻译：蜂窝通信系统中无线电传输的装置和方法
公开(公告)号：US20060099985A1
公开(公告)日：2006-05-11
申请号：US10984162
申请日：2004-11-09
申请人： Nick Whinnett , Amitava Ghosh , Rapeepat Ratasuk , Weimin Xiao
发明人： Nick Whinnett , Amitava Ghosh , Rapeepat Ratasuk , Weimin Xiao
IPC分类号： H04Q7/20
CPC分类号： H04W52/60 , H04W52/282
摘要： A base station (101) of a cellular communication system (100) comprises a receiver (105) and a channel quality processor (111) which receive channel quality indications from a communication unit (103). The base station (101) further comprises a transmitter (107) for transmitting signals to the communication unit (103). A first power control processor (115) controls the transmit power in response to a first power control mode of operation and a second power control processor (117) controls the transmit power in response to the second power control mode of operation. A rate processor (113) determines a rate of change indication for the channel quality indications and a selector (119) selects between the first power control mode and the second power control mode in response to the rate of change indication. The power control mode of operation may be modified to suit the current channel variations of the communication channel. The invention may be applicable to an HSDPA service in a UMTS cellular communication system.
摘要翻译：蜂窝通信系统（100）的基站（101）包括从通信单元（103）接收信道质量指示的接收机（105）和信道质量处理器（111）。基站（101）还包括用于向通信单元（103）发送信号的发射机（107）。第一功率控制处理器（115）响应于第一功率控制操作模式来控制发射功率，并且第二功率控制处理器（117）响应于第二功率控制操作模式来控制发射功率。速率处理器（113）确定信道质量指示的变化率指示，并且选择器（119）响应于变化率指示在第一功率控制模式和第二功率控制模式之间进行选择。可以修改功率控制操作模式以适应通信信道的当前信道变化。本发明可以应用于UMTS蜂窝通信系统中的HSDPA服务。

46. 发明申请

US20060056350A1 Method and apparatus for uplink communication in a cellular communication system 审中-公开
标题翻译：用于蜂窝通信系统中的上行链路通信的方法和装置
公开(公告)号：US20060056350A1
公开(公告)日：2006-03-16
申请号：US11193163
申请日：2005-07-29
申请人： Robert Love , Amitava Ghosh , Rapeepat Ratasuk , Nicholas Whinnett
发明人： Robert Love , Amitava Ghosh , Rapeepat Ratasuk , Nicholas Whinnett
IPC分类号： H04Q7/00
CPC分类号： H04W72/0406 , H04W36/18 , H04W84/042 , H04W88/08
摘要： A cellular communication system (100) comprises a first base station (103) which schedules resource for a user equipment (101). When receiving a resource allocation message, the user equipment (101) transmits a first message comprising a transmit indication to a plurality of base stations (103-109) wherein the transmit indication is indicative of a subsequent transmission of a second message. The user equipment (101) then proceeds to determine a transmit format for the second message; and to transmit the second message to the plurality of base stations (103-109) using the transmit format. When receiving the transmit indication, the plurality of base stations (103-109) proceed to configure their receivers to receive the second message. The first message may be transmitted in a control channel and the second message may be transmitted in a user data channel. The invention is particularly applicable to a High Speed Uplink Packet Access HSUPA service in a UMTS cellular communication system and may facilitate soft handover.
摘要翻译：蜂窝通信系统（100）包括对用户设备（101）调度资源的第一基站（103）。当接收到资源分配消息时，用户设备（101）向多个基站（103-109）发送包括发送指示的第一消息，其中发送指示指示第二消息的后续发送。用户设备（101）然后继续确定第二消息的发送格式; 并且使用发送格式将所述第二消息发送到所述多个基站（103-109）。当接收到发送指示时，多个基站（103-109）继续配置其接收机以接收第二消息。可以在控制信道中发送第一消息，并且可以在用户数据信道中发送第二消息。本发明特别适用于UMTS蜂窝通信系统中的高速上行链路分组接入HSUPA业务，并且可以促进软切换。

47. 发明申请

US20050047360A1 Method and apparatus for scheduling asynchronous transmissions 有权
标题翻译：用于调度异步传输的方法和装置
公开(公告)号：US20050047360A1
公开(公告)日：2005-03-03
申请号：US10966811
申请日：2004-10-15
申请人： Robert Love , Amitava Ghosh , Ravi Kuchibhotla
发明人： Robert Love , Amitava Ghosh , Ravi Kuchibhotla
IPC分类号： H04L12/56 , H04W56/00 , H04W72/04 , H04W72/08 , H04W72/12 , H04W84/04 , H04B7/216
CPC分类号： H04L5/0058 , H04W56/0045 , H04W72/0446 , H04W84/04
摘要： The present invention provides a method of scheduling asynchronous transmissions for a plurality of subscriber units. The method includes receiving information associated with a plurality of subscriber units that have uplink data to transmit, the information including uplink timing offset information associated with each of the subscriber units. Two or more subscriber units are then selected from a set of subscriber units having a timing offset differential, that is below a predetermined threshold, where the timing offset differential is the difference between the timing offset of a first subscriber unit and the timing offset of a second subscriber unit further selectively offset by a multiple of the transmission segment size, which minimizes the difference. The transmission segments, which are available for the uplink of data, are then allocated between the selected two or more subscriber units, which limits the number of transmission segments that have at least one of an overlap or a gap, and the amount of any overlap or gap, in order to minimize wasted scheduling opportunities.
摘要翻译：本发明提供了一种为多个用户单元调度异步传输的方法。该方法包括接收与具有要发送的上行链路数据的多个用户单元相关联的信息，所述信息包括与每个用户单元相关联的上行链路定时偏移信息。然后从具有定时偏移差分的一组用户单元中选择两个或更多个订户单元，该订户单元低于预定阈值，其中定时偏移差分是第一订户单元的定时偏移与第一用户单元的定时偏移之间的差第二用户单元进一步选择性地偏移传输段大小的倍数，这使差异最小化。可用于数据上行链路的传输段然后被分配在所选择的两个或多个用户单元之间，这限制了具有重叠或间隙中的至少一个的传输段的数量以及任何重叠的量或差距，以最小化浪费的调度机会。

48. 发明授权

US06678523B1 Closed loop method for reverse link soft handoff hybrid automatic repeat request 有权
标题翻译：反向链路软切换混合自动重传请求的闭环方法
公开(公告)号：US06678523B1
公开(公告)日：2004-01-13
申请号：US09705850
申请日：2000-11-03
申请人： Amitava Ghosh , Louay Jalloul
发明人： Amitava Ghosh , Louay Jalloul
IPC分类号： H04Q720
CPC分类号： H04L1/1845 , H04L1/1812 , H04W36/18
摘要： A method of combining soft-handoff with a hybrid ARQ scheme to maximize throughput and gain in a communications system. After receiving a frame from the MS (110), the BTSs (104 and 106) will process the frame and communicate to the MS over a forward control channel whether the frame contained any errors. If all BTSs communicate that the frame contains errors, the MS will retransmit the same frame to all BTSs with a flush bit set to instruct the BTSs 104 and 106 to combine the retransmitted frame with the original frame. If only some BTSs communicate that the frame contains errors, the MS will transmit the next frame to all BTSs that successfully decoded the frame with the flush bit set to instruct the BTSs to erase the previous frame from memory and not to combine the previous frame with the current frame. The MS will retransmit the frame to the BTSs that did not successfully decode the frame with the flush bit set to instruct the BTSs to combine the previous frame with the retransmitted frame.
摘要翻译：一种将软切换与混合ARQ方案组合以最大化通信系统中的吞吐量和增益的方法。在从MS（110）接收到帧之后，BTS（104和106）将处理该帧并且通过前向控制信道与MS通信该帧是否包含任何错误。如果所有的BTS都通信帧包含错误，则MS将重新发送相同的帧到所有的BTS，其中设置一个刷新比特，以指示BTS 104和106将重发帧与原始帧组合。如果只有一些BTS通信帧包含错误，则MS将向成功解码帧的所有BTS发送下一帧，该闪存位被设置为指示BTS从存储器擦除先前帧，而不将前一帧与当前框架。 MS将重新发送帧到没有成功解码帧的BTS，其中设置了刷新比特，以指示BTS将前一帧与重发帧组合。

49. 发明授权

US06233231B1 Data transmission within a spread-spectrum communication system 有权
标题翻译：扩频通信系统内的数据传输
公开(公告)号：US06233231B1
公开(公告)日：2001-05-15
申请号：US09204702
申请日：1998-12-03
申请人： Kenneth A. Felix , Mark C. Cudak , Amitava Ghosh
发明人： Kenneth A. Felix , Mark C. Cudak , Amitava Ghosh
IPC分类号： H04J1300
CPC分类号： H04J13/20 , H04J13/0044 , H04L1/0002
摘要： Remote units (113) having large amounts of data to transmit will be dynamically assigned Orthogonal Variable Spreading Factor (OVSF) codes corresponding to higher data rates and remote units (113) with lower amounts of data to be transmitted will be assigned OVSF codes corresponding to lower data rates. Additionally, in an alternate embodiment of the present invention, once system interference becomes greater than a predetermined threshold, the data rate between the base station (100) and remote units (113) in communication with the base station (100) is reduced. The reduction of the data rate between the base station (100) and remote units (113) occurs by changing the current OVSF codes utilized by both the remote units (113) and the base station (100).
摘要翻译：具有大量要发送的数据的远程单元（113）将被动态地分配对应于较高数据速率的正交可变扩频因子（OVSF）代码和具有较低数据量的远程单元（113）将被分配对应于较低的数据速率。另外，在本发明的替代实施例中，一旦系统干扰变得大于预定阈值，则与基站（100）通信的基站（100）和远程单元（113）之间的数据速率减小。基站（100）和远程单元（113）之间的数据速率的降低通过改变由远程单元（113）和基站（100）所使用的当前OVSF代码而发生。

50. 发明授权

US6018667A Method and apparatus for transmitting information regarding the synchronization status of a base station 失效
标题翻译：用于发送关于基站的同步状态的信息的方法和装置
公开(公告)号：US6018667A
公开(公告)日：2000-01-25
申请号：US009403
申请日：1998-01-20
申请人： Amitava Ghosh , Gerald Paul Labedz , Kenneth Allen Haas
发明人： Amitava Ghosh , Gerald Paul Labedz , Kenneth Allen Haas
IPC分类号： H04B7/26 , H04J11/00 , H04Q7/22 , H04Q7/24 , H04Q7/26 , H04Q7/30 , H04B7/005 , H04B7/216 , H04B15/00
CPC分类号： H04J11/0083
摘要： Base stations (101, 102) utilize a spreading code that is dependent upon whether the particular base station (101) is operating in a synchronized, or an unsynchronized mode. Unsynchronized base stations (102) within the communication system (100) utilize a long code unique to the particular base station (102), and base stations (101) operating in a synchronized mode utilize a time shifted version of the same long code. To reduce the search time for remote units (113) within the communication system (100), a group identification code (GIC) (305) is broadcast during a time period that the long code is masked. The GIC (305) indicates a (spreading code) long code group to which the long code of each base station belongs. Additionally, each base station (101, 102) within the communication system (100) determines its synchronization status and utilizes a particular GIC (305) and long code based on the base station's synchronization status.
摘要翻译：基站（101,102）利用依赖于特定基站（101）是以同步或非同步模式操作的扩展码。通信系统（100）内的非同步基站（102）利用特定基站（102）唯一的长码，并且以同步模式操作的基站（101）利用相同长码的时移版本。为了减少通信系统（100）内的远程单元（113）的搜索时间，在长码被屏蔽的时间段期间广播组识别码（GIC）（305）。 GIC（305）表示每个基站的长码所属的（扩展码）长码组。此外，通信系统（100）内的每个基站（101,102）确定其同步状态，并且基于基站的同步状态利用特定的GIC（305）和长码。

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