公开(公告)号：US06859446B1

公开(公告)日：2005-02-22

申请号：US09658084

申请日：2000-09-11

申请人： Nandu Gopalakrishnan ,  Niranjan Sudhir Joshi ,  Srinivas R. Kadaba ,  Achilles George Kogiantis ,  Ashok N. Rudrapatna ,  Mehmet Oguz Sunay ,  Ganapathy Subramanian Sundaram ,  Stanley Vitebsky

发明人： Nandu Gopalakrishnan ,  Niranjan Sudhir Joshi ,  Srinivas R. Kadaba ,  Achilles George Kogiantis ,  Ashok N. Rudrapatna ,  Mehmet Oguz Sunay ,  Ganapathy Subramanian Sundaram ,  Stanley Vitebsky

IPC分类号： H04B7/005 ,  H04B7/26 ,  H04W52/22 ,  H04W52/24 ,  H04W52/26 ,  H04W52/34 ,  H04W52/54 ,  H04B7/216

CPC分类号： H04W52/265 ,  H04B7/264 ,  H04W52/223 ,  H04W52/241 ,  H04W52/267 ,  H04W52/34 ,  H04W52/54

摘要： Disclosed is a method of integrating voice and data services onto a same frequency channel using available transmit power information to determine data rates, wherein the available transmit power information indicates an amount of transmit power available for future data transmissions over one or more data channels. In a “distributed” embodiment, a transmitter or base station transmits, via a forward link, an available power message to a receiver or mobile-telephone indicating an amount of available transmit power at some future time t+z. The mobile-telephone performs signal-to-interference measurements corresponding to the received forward link and received interference, and uses such signal-to-interference measurements and the available power message to determine a data rate that can be supported by the mobile-telephone. Preferably, the determined data rate corresponds to a maximum data rate at which a minimum level of quality of service can be achieved at the mobile-telephone. In a “centralized” embodiment, the mobile-telephone transmits the signal-to-interference measurements to the base station, and the base station determines the data rate based on the available transmit power at future time t+z.

摘要翻译： 公开了一种使用可用的发射功率信息将语音和数据业务集成到相同频率信道上以确定数据速率的方法，其中可用发射功率信息指示可用于一个或多个数据信道上将来数据传输的发射功率量。 在“分布式”实施例中，发射机或基站经由前向链路将可用功率消息发射到接收机或移动电话，指示在某个未来时间t + z处的可用发射功率量。 移动电话执行对应于接收到的前向链路和接收到的干扰的信号到干扰测量，并且使用这样的信号对干扰测量和可用功率消息来确定移动电话可以支持的数据速率。 优选地，确定的数据速率对应于在移动电话可以实现最低服务质量水平的最大数据速率。 在“集中”实施例中，移动电话将信号到干扰测量发送到基站，并且基站在未来时间t + z基于可用发射功率来确定数据速率。

公开(公告)号：US07356346B2

公开(公告)日：2008-04-08

申请号：US10186007

申请日：2002-06-28

申请人： Nandu Gopalakrishnan ,  Srinivas R. Kadaba ,  Ashok N. Rudrapatna ,  Ganapathy Subramanian Sundaram

发明人： Nandu Gopalakrishnan ,  Srinivas R. Kadaba ,  Ashok N. Rudrapatna ,  Ganapathy Subramanian Sundaram

IPC分类号： H04B7/00

CPC分类号： H04W72/1231 ,  H04W52/24 ,  H04W72/1268

摘要： A method of scheduling data communication over an uplink. The method enables two or more users seeking to transmit data over the uplink to be scheduled in response to their path loss. The user having the most attractive determined path loss among the two or more users seeking to transmit data over the uplink us scheduled first. Thereafter, the next user having the next most attractive path loss among the remaining users may be subsequently scheduled if the total noise rise leftover is greater than zero. This process repeats so long as or until the total noise rise leftover is about zero.

摘要翻译： 一种通过上行链路调度数据通信的方法。 该方法使得两个或更多个用户通过上行链路发送数据以根据路径损耗进行调度。 在要求通过上行链路发送数据的两个或更多个用户中具有最有吸引力的确定的路径损耗的用户首先被调度。 此后，如果总噪声上升剩余量大于零，则可以随后调度剩余用户中具有下一个最有吸引力的路径损耗的下一个用户。 这个过程重复，直到或者直到总噪声上升剩余量大约为零为止。

公开(公告)号：US06836666B2

公开(公告)日：2004-12-28

申请号：US09851100

申请日：2001-05-08

申请人： Nandu Gopalakrishnan ,  Srinivas R. Kadaba ,  Ashok N. Rudrapatna ,  Ganapathy Subramanian Sundaram

发明人： Nandu Gopalakrishnan ,  Srinivas R. Kadaba ,  Ashok N. Rudrapatna ,  Ganapathy Subramanian Sundaram

IPC分类号： H04Q720

CPC分类号： H04W72/1284 ,  H04B2201/70703 ,  H04W52/265 ,  H04W52/267 ,  H04W52/50 ,  H04W72/1268

摘要： Efficient data communication in wireless communication system is provided by using centralized control of data communications, such as packet switched services, over the uplink channel (mobile station (MS) to base station (BS)). A multiple access protocol is used where packet data mobile stations make requests for uplink channel resources. The request messages transmitted by the MSs inform the BS of service parameters. Examples of such service parameters are available transmit power at the MS, the amount of data to transmit and Quality of Service (QoS). The BS then processes the received request messages and performs interference management calculations to determine the portion of the BS's receive power budget that can be allocated to the data user requesting service. These calculations are used to control the amount of interference seen at the base station, to assign a data rate to the user and to aid scheduling algorithms in computing service order priorities. Any scheduling algorithm may be used; for example, scheduling may be based on the amount of data to be transmitted, the age of the data or the service priority associated with the mobile station. The interference control is used to prevent the occurrence of catastrophic levels of interference while maximizing the utilization of resources on the uplink.

摘要翻译： 通过上行链路信道（移动​​台（MS）到基站（BS））的数据通信（例如分组交换业务）的集中控制来提供无线通信系统中的高效数据通信。 使用多址协议，其中分组数据移动台对上行链路信道资源进行请求。 MS发送的请求消息通知BS服务参数。 这种服务参数的示例是MS处的可用发射功率，要传输的数据量和服务质量（QoS）。 然后，BS处理接收到的请求消息并执行干扰管理计算，以确定可以分配给数据用户请求服务的BS的接收功率预算的部分。 这些计算用于控制在基站处看到的干扰量，为用户分配数据速率，并帮助调度算法计算服务顺序优先级。 可以使用任何调度算法; 例如，调度可以基于要发送的数据量，数据的年龄或与移动站相关联的服务优先级。 干扰控制用于防止灾难性干扰水平的发生，同时最大化上行链路上的资源利用率。

公开(公告)号：US06751480B2

公开(公告)日：2004-06-15

申请号：US09727896

申请日：2000-12-01

申请人： Achilles George Kogiantis ,  Ashok N. Rudrapatna ,  Mehmet Oguz Sunay

发明人： Achilles George Kogiantis ,  Ashok N. Rudrapatna ,  Mehmet Oguz Sunay

IPC分类号： H04B100

CPC分类号： H04W16/28 ,  H04B7/061

摘要： A method for increasing the capacity of a communication network by assigning subscribers of the communication network to individual antennas of an antenna array and allowing the antenna array to convey information to the assigned subscribers under the control of a scheduling algorithm. Antennas—under the control of the scheduling algorithm—in the antenna array are thus able to convey information to different subscribers at different times. The scheduling algorithm determines when to convey information to an assigned subscriber based on channel condition information it receives from the subscribers. The scheduling algorithm also uses the channel condition information to assign certain subscribers to certain antennas.

摘要翻译： 一种通过将通信网络的用户分配给天线阵列的各个天线并允许天线阵列在调度算法的控制下向所分配的用户传送信息的方法来增加通信网络的容量。 在天线阵列中的调度算法的控制下的天线因此能够在不同的时间向不同的用户传送信息。 调度算法基于从用户接收到的信道条件信息确定何时向所分配的用户传送信息。 调度算法还使用信道条件信息来向某些天线分配某些用户。

公开(公告)号：US07158504B2

公开(公告)日：2007-01-02

申请号：US09861967

申请日：2001-05-21

申请人： Srinivas R. Kadaba ,  Farooq Ullah Khan ,  Eshwar Pittampalli ,  Ashok N. Rudrapatna ,  Ganapathy Subramanian Sundaram ,  Subramanian Vasudevan ,  Yunsong Yang

发明人： Srinivas R. Kadaba ,  Farooq Ullah Khan ,  Eshwar Pittampalli ,  Ashok N. Rudrapatna ,  Ganapathy Subramanian Sundaram ,  Subramanian Vasudevan ,  Yunsong Yang

IPC分类号： H04B7/212 ,  H04Q7/20

CPC分类号： H04W74/02 ,  H04L1/0002 ,  H04L1/1819 ,  H04L1/1845

摘要： A multiple mode data communication system and method provides the flexibility to schedule wireless unit transmissions and/or allow the wireless unit to transmit autonomously. In certain embodiments, the wireless units can transmit autonomously and/or use scheduling depending on the data rate, the length of the data packet or the type of data. For example, the wireless units can transmit autonomously at lower data rates and use scheduling at higher data rates. Thus, the multiple mode system enables wireless unit transmissions to be scheduled and/or be transmit autonomously, and wireless units can simultaneously operate in different scheduling and/or autonomous modes. Depending on the embodiment, the system can provide even greater flexibility in operation by permitting wireless units to be scheduled by a single base station, scheduled by a multiplicity of base stations simultaneously or otherwise, via coordination between base stations, scheduled by a multiplicity of base stations in an uncoordinated and asynchronous manner, allowed to transmit autonomously, and/or allowed to transmit autonomously under base station supervision (i.e. rate control/adjustment by the base station). Additionally, a forward and/or reverse link control channel structure is provided which can be used to implement the multiple mode data communication system and/or support various features enabling increased throughput over a shared data channel in a wireless communications system.

公开(公告)号：US07391755B2

公开(公告)日：2008-06-24

申请号：US10261283

申请日：2002-09-30

申请人： Nandu Gopalakrishnan ,  Jung-Tao Liu ,  Ashok N. Rudrapatna ,  Naresh Sharma ,  Achilles George Kogiantis

发明人： Nandu Gopalakrishnan ,  Jung-Tao Liu ,  Ashok N. Rudrapatna ,  Naresh Sharma ,  Achilles George Kogiantis

IPC分类号： H04Q7/00 ,  H04Q7/28

CPC分类号： H04L1/1867 ,  H04B7/061 ,  H04L1/1816 ,  H04L2001/0092 ,  H04L2001/0096

摘要： A method for conveying signaling information of a communication system that uses MIMO antenna systems. To enable a relatively larger amount of information to be conveyed over the communication system and thus exploit the use of the MIMO antenna system, forward link signaling channels are provided where such channels contain swapping information that allow the communication system to retransmit traffic information using any one of the antenna elements of a MIMO system. The forward link signaling channels also contain channel assignment information that indicate which particular groups of channels are available for use by particular users of the communication system. To further accommodate for the relatively larger amount of information being conveyed over the communication system, the format of the reverse link signaling information is modified using any one or any combination of the following three mechanisms: (1) reverse signaling link information is time division multiplexed; (2) the reverse link information is modulated at relatively higher order modulation; (3) additional channels are provided for the reverse link information.

摘要翻译： 一种用于传送使用MIMO天线系统的通信系统的信令信息的方法。 为了能够通过通信系统传送相对较大数量的信息，从而利用MIMO天线系统的使用，提供了前向链路信令信道，其中这些信道包含交换信息，允许通信系统使用任何一个重传交通信息 的MIMO系统的天线元件。 前向链路信令信道还包含信道分配信息，其指示信道的哪些特定组可供通信系统的特定用户使用。 为了进一步适应通过通信系统传送的相对较大量的信息，使用以下三种机制中的任何一种或任意组合来修改反向链路信令信息的格式：（1）反向信令链路信息是时分复用的 ; （2）反相链路信息在相对较高阶调制下进行调制; （3）为反向链路信息提供附加信道。

公开(公告)号：US07110466B1

公开(公告)日：2006-09-19

申请号：US09587727

申请日：2000-06-05

申请人： Nandu Gopalakrishnan ,  Ashok N. Rudrapatna ,  Ganapathy Subramanian Sundaram

发明人： Nandu Gopalakrishnan ,  Ashok N. Rudrapatna ,  Ganapathy Subramanian Sundaram

IPC分类号： H04L27/04

CPC分类号： H04L1/08 ,  H04L1/0009 ,  H04L1/0025

摘要： The present invention provides a method for encoding messages. The method includes identifying at least a first plurality of messages indicative of a corresponding first plurality of data transmission rates and a second plurality of messages indicative of a corresponding second plurality of data transmission rates based on a prior transmitted message, where the first and second pluralities of messages are unequal. The method also includes transmitting a message from one of at least the first and second pluralities of messages.

摘要翻译： 本发明提供一种编码消息的方法。 该方法包括基于先前发送的消息来识别指示对应的第一多个数据传输速率的至少第一多个消息和指示对应的第二多个数据传输速率的第二多个消息，其中第一和第二多个 的消息是不平等的。 该方法还包括从至少第一和第二多个消息中的一个发送消息。

公开(公告)号：US07426196B2

公开(公告)日：2008-09-16

申请号：US11046489

申请日：2005-01-28

申请人： Nandu Gopalakrishnan ,  Niranjan S. Joshi ,  Srinivas R. Kadaba ,  Ashok N. Rudrapatna ,  Ganapathy S. Sundaram

发明人： Nandu Gopalakrishnan ,  Niranjan S. Joshi ,  Srinivas R. Kadaba ,  Ashok N. Rudrapatna ,  Ganapathy S. Sundaram

IPC分类号： H04Q7/00

CPC分类号： H04L1/1812 ,  H04L1/0007 ,  H04L1/0009 ,  H04L1/1887 ,  H04L47/14 ,  H04L47/24 ,  H04L47/30 ,  H04W28/06 ,  H04W72/10

摘要： An apparatus and a method for managing resources for efficient packet data transmission. More specifically, there is provided a method for allocating transmission resources in a base station comprising determining a largest supportable packet size for a highest priority user, wherein the determination is based at least partially on the available modulation types, a total number of codes available for packet transmission, a total amount of available transmission power available for packet transmission, and frame durations supported by a base station.

摘要翻译： 一种用于管理有效分组数据传输的资源的装置和方法。 更具体地，提供了一种用于在基站中分配传输资源的方法，包括确定最高优先级用户的最大可支持分组大小，其中所述确定至少部分地基于可用的调制类型，可用于 分组传输，可用于分组传输的可用传输功率的总量以及由基站支持的帧持续时间。

公开(公告)号：US06961304B1

公开(公告)日：2005-11-01

申请号：US09660094

申请日：2000-09-12

申请人： Ashok N. Rudrapatna ,  Mehmet Oguz Sunay

发明人： Ashok N. Rudrapatna ,  Mehmet Oguz Sunay

IPC分类号： H04B7/26 ,  H04J11/00 ,  H04J13/00 ,  H04J13/18 ,  H04W36/06

CPC分类号： H04B7/2618 ,  H04J13/0048 ,  H04J13/18 ,  H04W36/06

摘要： The code space associated with the communication system is divided into at least two subspaces where each subspace is assigned to a different mode of operation. In one mode, such as a voice mode, each user is given full time access to a portion of the subspace associated with that mode of operation. In a second mode, such as a data mode, each user uses the entire subspace associated with that mode on a time shared basis. Additionally, in-sector handoffs from one Walsh code to another are used to more efficiently distribute the code space.

摘要翻译： 与通信系统相关联的代码空间被划分为至少两个子空间，其中每个子空间被分配到不同的操作模式。 在诸如语音模式的一种模式中，每个用户被给予全职访问与该操作模式相关联的子空间的一部分。 在诸如数据模式的第二模式中，每个用户在时间共享的基础上使用与该模式相关联的整个子空间。 另外，从一个沃尔什码到另一个沃尔什码的扇区间切换被用于更有效地分配代码空间。

公开(公告)号：US06829470B2

公开(公告)日：2004-12-07

申请号：US10118648

申请日：2002-04-08

申请人： Achilles George Kogiantis ,  Ashok N. Rudrapatna ,  Naresh Sharma

发明人： Achilles George Kogiantis ,  Ashok N. Rudrapatna ,  Naresh Sharma

IPC分类号： H04B702

CPC分类号： H04L1/0015 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0625

摘要： A method for allocating data rate to a stream of information to be transmitted over a communication channel of a communication system is provided. Modified union bounds are used to determine the channel characteristic experienced by each of the streams to select their respective data rates from an MCS that can be handled by the communication channel of the communication system.

摘要翻译： 提供了一种用于将数据速率分配给要通过通信系统的通信信道发送的信息流的方法。 修改的联合边界用于确定每个流所经历的信道特性，以从可以由通信系统的通信信道处理的MCS中选择它们各自的数据速率。