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    METHOD AND SYSTEM FOR ADAPTIVELY OBTAINING BANDWIDTH ALLOCATION REQUESTS
    41.
    发明申请
    METHOD AND SYSTEM FOR ADAPTIVELY OBTAINING BANDWIDTH ALLOCATION REQUESTS 审中-公开

    公开(公告)号：US20090207795A1

    公开(公告)日：2009-08-20

    申请号：US12370511

    申请日：2009-02-12

    申请人： Brian Spinar ,  Kenneth L. Stanwood

    发明人： Brian Spinar ,  Kenneth L. Stanwood

    IPC分类号： H04W72/04

    CPC分类号： H04W28/20 ,  H04W28/06 ,  H04W28/18 ,  H04W72/0413 ,  H04W72/042 ,  H04W72/0453 ,  H04W74/06

    摘要： A method and apparatus for adaptively obtaining bandwidth requests in a broadband wireless communication system. The method and apparatus includes dynamically varying technique combinations enabling a plurality of users to efficiently request bandwidth from a shared base station. A user may “piggyback” a new bandwidth request upon, or set a “poll-me bit” within, presently allocated bandwidth. A base station may poll users, individually or in groups, by allocating unrequested bandwidth for new requests. Polling may respond to a “poll-me bit,” and/or it may be adaptively periodic at a rate based on communication status parameters, such as recent communication activity and connection QoS levels. Group polling permits a possibility of collisions. Polling policies may be established for dynamically varying user groups, or may be determined for each user. Dynamic selection of appropriate polling techniques makes use of efficiency benefits associated with each technique.

    Method and apparatus for efficient bandwidth utilization in subscriber unit initialization and synchronization in a time-synchronized communication system
    44.
    发明授权
    Method and apparatus for efficient bandwidth utilization in subscriber unit initialization and synchronization in a time-synchronized communication system 有权
    用于时间同步通信系统中用户单元初始化和同步的有效带宽利用的方法和装置

    公开(公告)号：US06977919B1

    公开(公告)日：2005-12-20

    申请号：US09629569

    申请日：2000-07-31

    申请人： Kenneth L. Stanwood

    发明人： Kenneth L. Stanwood

    IPC分类号： H04B7/26 ,  H04J3/06

    CPC分类号： H04W56/0045 ,  H04L69/28 ,  H04W56/00 ,  H04W72/04 ,  H04W74/0841 ,  H04W88/08

    摘要： A bandwidth efficient subscriber unit initialization and synchronization method and apparatus is described. The inventive subscriber unit initialization and synchronization method and apparatus uses a combination of an access burst format and a data transportation technique to efficiently use bandwidth when initializing and synchronizing subscriber units in a time-synchronized communication system. Advantageously, the present invention provides a mechanism for a base station to receive multiple access bursts from multiple subscriber units in a single contiguous time period. In the preferred embodiment of the present invention, bandwidth is efficiently utilized by searching for multiple initial access bursts from multiple mobile stations during a single time period known as a new access opportunity. The preferred embodiment of the present invention initializes and synchronizes subscriber units in a “contention-based” manner.

    摘要翻译： 描述带宽有效的用户单元初始化和同步方法和装置。 本发明的用户单元初始化和同步方法和装置使用接入脉冲串格式和数据传输技术的组合来在时间同步通信系统中初始化和同步用户单元时有效地使用带宽。 有利地，本发明提供了一种用于基站在单个相邻时间段内从多个用户单元接收多个接入脉冲串的机制。 在本发明的优选实施例中，通过在被称为新的访问机会的单个时间周期内搜索来自多个移动站的多个初始接入脉冲串来有效地利用带宽。 本发明的优选实施例以“基于竞争”的方式初始化和同步用户单元。

    Method and apparatus for a self-correcting bandwidth request/grant protocol in a wireless communication system
    45.
    发明授权
    Method and apparatus for a self-correcting bandwidth request/grant protocol in a wireless communication system 有权
    在无线通信系统中用于自校正带宽请求/授权协议的方法和装置

    公开(公告)号：US06785252B1

    公开(公告)日：2004-08-31

    申请号：US09613434

    申请日：2000-07-11

    申请人： Ofer Zimmerman ,  Kenneth L. Stanwood ,  Brian Spinar ,  Yair Bourlas ,  Amir Serok

    发明人： Ofer Zimmerman ,  Kenneth L. Stanwood ,  Brian Spinar ,  Yair Bourlas ,  Amir Serok

    IPC分类号： H04J316

    CPC分类号： H04W72/0413 ,  H04L5/0064 ,  H04L5/0092 ,  H04L2012/5607 ,  H04L2012/561 ,  H04Q11/0478 ,  H04W4/06 ,  H04W8/24 ,  H04W28/0268 ,  H04W28/06 ,  H04W28/14 ,  H04W56/0005 ,  H04W60/00 ,  H04W72/0406 ,  H04W72/042 ,  H04W72/044 ,  H04W72/0453 ,  H04W72/048 ,  H04W72/10 ,  H04W74/06

    摘要： A method and apparatus for a self-correcting bandwidth request/grant protocol in a broadband wireless communication system is disclosed. The self-correcting bandwidth request/grant protocol utilizes a combination of incremental and aggregate bandwidth requests. In accordance with the present inventive protocol, CPEs primarily transmit incremental bandwidth requests to their associated base stations, followed by periodic transmissions of aggregate bandwidth requests. The use of incremental bandwidth requests reduces risks that a base station erroneously issues duplicate bandwidth allocations to the same CPE for the same connection. Race conditions that may have occurred using only aggregate bandwidth requests are eliminated by requiring the CPEs to request bandwidth in an incremental manner. However, use of periodic aggregate bandwidth requests (that express the current state of their respective connection queues) allows the present bandwidth allocation method and apparatus to be “self-correcting”. The present method is self-correcting because errors that may have been introduced due to lost incremental bandwidth requests are corrected by the base stations when the aggregate bandwidth requests are received and processed. Upon receipt of the aggregate bandwidth requests, the base stations reset their records to correctly reflect the current bandwidth requirements of their associated CPEs. Periodic use of aggregate bandwidth requests provides a self-correcting bandwidth allocation protocol yet without the bandwidth overhead (e.g., bandwidth required to transmit acknowledgements) typically associated with the prior art protocols (such as the guaranteed delivery protocols).

    摘要翻译： 公开了一种用于宽带无线通信系统中的自校正带宽请求/授权协议的方法和装置。 自校正带宽请求/授权协议使用增量和聚合带宽请求的组合。 根据本发明的协议，CPE主要向其相关联的基站发送增量带宽请求，随后是聚合带宽请求的周期性传输。 使用增量带宽请求减少了基站错误地向相同连接的相同CPE发布重复带宽分配的风险。 通过要求CPE以递增方式请求带宽，消除了可能仅使用聚合带宽请求发生的种族条件。 然而，使用周期性聚合带宽请求（表示其相应连接队列的当前状态）允许当前带宽分配方法和装置“自校正”。 本方法是自校正的，因为当接收和处理聚合带宽请求时，基站由于丢失的增量带宽请求而引入的错误被校正。 收到总带宽请求后，基站重新设置其记录，以正确反映其相关CPE的当前带宽需求。 聚合带宽请求的定期使用提供了自校正带宽分配协议，而没有通常与现有技术协议（例如保证传送协议）相关联的带宽开销（例如，传送确认所需的带宽）。

    Method and apparatus for synchronization between MAC and physical layers in a wireless communication system when transporting ATM cells
    46.
    发明授权
    Method and apparatus for synchronization between MAC and physical layers in a wireless communication system when transporting ATM cells 有权
    用于在传送ATM信元时无线通信系统中的MAC和物理层之间的同步的方法和装置

    公开(公告)号：US06771660B1

    公开(公告)日：2004-08-03

    申请号：US09696934

    申请日：2000-10-25

    申请人： Yair Bourlas ,  Jacques Behar ,  Kenneth L. Stanwood

    发明人： Yair Bourlas ,  Jacques Behar ,  Kenneth L. Stanwood

    IPC分类号： H04J306

    CPC分类号： H04L29/06 ,  H04L69/324 ,  H04L2012/5607 ,  H04L2012/5627 ,  H04L2012/5648 ,  H04W80/02

    摘要： The present invention is a novel method and apparatus for efficiently transporting and synchronizing data between the Media Access Control (MAC) and physical communication protocol layers in a wireless communication system. An inventive method and apparatus for transporting and synchronizing to fixed-length ATM cell boundaries and for protecting against the potential misinsertion of ATM cells has been described. An inventive ATM packet format is described. The ATM packet format is used by the present invention for the transportation and synchronization of ATM cells. The ATM packets include fields that are used to detect errors occurring within each ATM cell. ATM cells are transported in exactly two TC/PHY packets, or TDUs. ATM header information is contained in the first TDU only. No ATM header information is carried by the second TDU. An entire ATM cell is discarded if an uncorrectable error is detected in the first TDU. If no uncorrectable error occurs in the first TDU, the second TDU is checked for errors. If an undetectable error exists in the second TDU, no discard action is taken. The error is noted, and both TDUs are passed through to the higher MAC communication layers. The inventive method protects against errors occurring in the ATM header because the ATM header is always carried in the first TDU. Consequently, misinsertion of ATM cells is also prevented.

    摘要翻译： 本发明是一种在无线通信系统中有效地传输和同步媒体接入控制（MAC）与物理通信协议层之间的数据的方法和装置。 已经描述了用于传输和同步到固定长度的ATM信元边界并且用于防止潜在的ATM信元插入的发明方法和装置。 描述了创新的ATM分组格式。 ATM分组格式由本发明用于ATM信元的传输和同步。 ATM分组包括用于检测在每个ATM信元内出现的错误的字段。 ATM信元在两个TC / PHY数据包或TDU中传输。 ATM头信息仅包含在第一个TDU中。 第二个TDU不携带ATM头信息。 如果在第一个TDU中检测到不可校正的错误，则丢弃整个ATM信元。 如果在第一个TDU中没有发生不可纠正的错误，则会检查第二个TDU的错误。 如果第二个TDU中存在不可检测的错误，则不会执行丢弃操作。 注意到错误，并且两个TDU都被传递到较高的MAC通信层。 本发明的方法防止在ATM报头中发生的错误，因为ATM报头总是在第一TDU中携带。 因此，也阻止了ATM信元的误插。

    Method for allocating fractional bandwidth in a fixed-frame communication system
    47.
    发明授权
    Method for allocating fractional bandwidth in a fixed-frame communication system 失效
    在固定帧通信系统中分配带宽的方法

    公开(公告)号：US06693887B2

    公开(公告)日：2004-02-17

    申请号：US09788283

    申请日：2001-02-15

    申请人： Kenneth L. Stanwood ,  Yair Bourlas

    发明人： Kenneth L. Stanwood ,  Yair Bourlas

    IPC分类号： H04Q724

    CPC分类号： H04L12/40

    摘要： A method for allocating fractional bandwidth in a fixed-frame communication system is described. The method includes calculating the integral cells per frame required at a connection, calculating the fractional cells per second required at the connection, setting a counter, adding the fractional cells per second to the counter, determining if the counter is above a preset limit, allocating an additional cell when the counter exceeds the preset limit, and reducing the counter a predetermined amount to reflect allocating the cell.

    摘要翻译： 描述了一种用于在固定帧通信系统中分配分数带宽的方法。 该方法包括计算连接所需的每帧的积分单元，计算连接所需的每秒的分数单元，设置计数器，将每秒的分数单元相加到计数器，确定计数器是否高于预设限制，分配 当计数器超过预设限制时，附加单元，并且将计数器减少到预定量以反映分配单元。