公开(公告)号：US07457307B1

公开(公告)日：2008-11-25

申请号：US11195876

申请日：2005-08-03

申请人： Herman Chien ,  Jin-Meng Ho ,  Liang A. Hong ,  Eliott Hoole ,  Kin K. Leung

发明人： Herman Chien ,  Jin-Meng Ho ,  Liang A. Hong ,  Eliott Hoole ,  Kin K. Leung

IPC分类号： H04L12/413

CPC分类号： H04W74/0816 ,  H04W74/002 ,  H04W74/0833

摘要： A method and an apparatus provide for controlled access to a shared communication medium. Time slots on a forward channel include information regarding status useful for remote units to determine whether a reverse channel is available for seizure. Additionally, information along the forward channel provides guidance to the remote units to control attempts to seize the reverse channel. In one embodiment a remote unit divides a data package into a plurality of portions and attempts to seize the reverse channel using a single portion of the data package which corresponds to one time slot on the reverse channel. It then waits until it receives notification along the forward channel that the first data portion was successfully received before it attempts to send any of the remainder of its data in consecutive time slots on the reverse channel.

摘要翻译： 方法和装置提供对共享通信介质的受控访问。 前向信道上的时隙包括关于用于远程单元确定反向信道是否可用于发作的状态的信息。 另外，沿着前向信道的信息为远程单元提供指导，以控制占用反向信道的尝试。 在一个实施例中，远程单元将数据包分成多个部分，并尝试使用对应于反向信道上的一个时隙的数据包的单个部分来占用反向信道。 然后它等待直到它在前向信道上接收到第一数据部分被成功接收到的通知，然后它尝试在反向信道上的连续时隙中发送其数据的其余部分。

公开(公告)号：US07324495B1

公开(公告)日：2008-01-29

申请号：US09592820

申请日：2000-06-12

申请人： David B. Gibbons ,  Liang A. Hong ,  Elliott Hoole

发明人： David B. Gibbons ,  Liang A. Hong ,  Elliott Hoole

IPC分类号： H04J1/00

CPC分类号： H04W56/0015 ,  H04L5/0007 ,  H04L5/0053

摘要： A method has been provided for using the broadcast channel of a wireless multiple access network to communicate network timing information, or a time-stamp, to remote units. The method defines a broadcast channel protocol which divides communication frames into units called broadcast channel (BC) superframes. Each broadcast channel superframe is given a unique identification number, called a superframe count, which is transmitted by each base station. Then, both the network base stations and remote units can record events using the known superframe count. A method is also disclosed for the network to assign 14-bit identification numbers to remote units being installed into the network, so that communications can be conducted with installed remote units using the identification numbers instead of the 32-bit hardware serial numbers.

摘要翻译： 已经提供了一种使用无线多址网络的广播信道来向远程单元传送网络定时信息或时间戳的方法。 该方法定义了将通信帧划分成称为广播信道（BC）超帧的单元的广播信道协议。 每个广播频道超帧被给予由每个基站发送的唯一标识号，称为超帧计数。 然后，网络基站和远程单元都可以使用已知的超帧计数记录事件。 还公开了一种用于网络将14位识别号码分配给安装到网络中的远程单元的方法，使得可以使用标识号而不是32位硬件序列号与安装的远程单元进行通信。

公开(公告)号：US06801513B1

公开(公告)日：2004-10-05

申请号：US09597044

申请日：2000-06-20

申请人： David B. Gibbons ,  Eamonn Gormley ,  Liang A. Hong ,  Elliott Hoole ,  Kamyar Moinzadeh

发明人： David B. Gibbons ,  Eamonn Gormley ,  Liang A. Hong ,  Elliott Hoole ,  Kamyar Moinzadeh

IPC分类号： H04J116

CPC分类号： H04W72/0446 ,  H04W24/10 ,  H04W72/02 ,  H04W74/00

摘要： A wireless communication system having a base unit and a plurality of remote transceiver units utilizes a dynamic time slot assignment scheme for channel access. The base unit receives and processes a channel access request message from a remote transceiver unit and prepares a channel measurement request message in response. If an Mth time slot of a time frame is available, the base unit sends this message in the Mth time slot and receives a message having channel measurement data in the Mth time slot of the next time frame. On the other hand, if the Mth time slot of the time frame is already reserved, the base unit sends the message in an Nth time slot of the time frame and receives a message having the channel measurement data in the Nth time slot of the next time frame. The base unit selects, based on the channel measurement data, an appropriate channel for communication for the remote transceiver unit, Continuing with use of the dynamic slot assignment, the base unit sends a message having a channel identifier associated with the selected channel and receives an acknowledgement from the remote transceiver unit in response.

摘要翻译： 具有基本单元和多个远程收发器单元的无线通信系统利用用于信道接入的动态时隙分配方案。 基站单元从远程收发器单元接收并处理信道接入请求消息，并准备响应的信道测量请求消息。 如果时间段的第M个时隙可用，则基站单元在第M个时隙中发送该消息，并在下一个时间帧的第M个时隙中接收具有信道测量数据的消息 。 另一方面，如果已经保留了时间帧的第M个时隙，则基站单元在时间帧的第N个时隙中发送消息，并且接收具有该时隙中的信道测量数据的消息 下一个时间帧的第N个时隙。 基站单元基于信道测量数据选择用于远程收发机单元的通信的适当信道。继续使用动态时隙分配，基站单元发送具有与所选信道相关联的信道标识符的消息，并接收 应答来自远程收发器单元的确认。

公开(公告)号：US06629261B1

公开(公告)日：2003-09-30

申请号：US09717498

申请日：2000-11-21

申请人： Lakshmana Rao Chintada ,  Liang A. Hong ,  Kamyar Moinzadeh ,  Donald P. Wahlstrom

发明人： Lakshmana Rao Chintada ,  Liang A. Hong ,  Kamyar Moinzadeh ,  Donald P. Wahlstrom

IPC分类号： G02H305

CPC分类号： H04L1/1848 ,  H04L1/1621 ,  H04L1/1664 ,  H04L1/1685 ,  H04L1/1809

摘要： A method of recovering lost frames transmitted between a packet data sending unit and a packet data receiving unit in a data communications system is disclosed. When a frame is successfully received by the packet data receiving unit, it identifies a failure to successfully receive prior frames, i.e., at least one frame prior to the frame successfully received at the packet data receiving unit. The packet data receiving unit starts a selective reject wait timer and determines whether the number of frames missed so far is greater than or equal to a predetermined threshold. If the number of missed frames is greater than or equal to the preset limit, the packet data receiving unit generates a selective reject message that includes a payload indicating a first missed frame and subsequent missed frames. If the number of missed frames is less than the predetermined threshold, the packet data receiving unit waits until the expiration of the selective reject wait timer, or until after the next determination that the number of missed frames meets or exceeds the predetermined threshold. It then sends the selective reject message to the packet data sending unit. Upon successful receipt of the retransmitted missed frames from the packet data sending unit, the packet data receiving unit generates a receive ready message and sends the receive ready message to the packet data sending unit.

摘要翻译： 公开了一种在数据通信系统中恢复分组数据发送单元与分组数据接收单元之间传输的丢失帧的方法。 当分组数据接收单元成功接收到帧时，它识别成功接收先前帧的失败，即，在分组数据接收单元成功接收到帧之前的至少一个帧。 分组数据接收单元启动选择性拒绝等待定时器，并确定到目前为止丢失的帧数是否大于或等于预定阈值。 如果丢失帧的数量大于或等于预设限制，则分组数据接收单元产生选择性拒绝消息，该消息包括指示第一丢失帧和后续丢帧的有效载荷。 如果丢失帧的数量小于预定阈值，则分组数据接收单元等待直到选择性拒绝等待定时器到期，或者直到下次确定后，错过的帧的数量满足或超过预定阈值。 然后将选择性拒绝消息发送到分组数据发送单元。 在从分组数据发送单元成功接收到重传的丢失帧之后，分组数据接收单元生成接收就绪消息，并将接收就绪消息发送到分组数据发送单元。