公开(公告)号：US5008878A

公开(公告)日：1991-04-16

申请号：US257656

申请日：1988-10-14

申请人： Hamid Ahmadi ,  Johannes G. Beha ,  Wolfgang E. Denzel ,  Antonius P. Engbersen ,  Ronald P. Luijten ,  Charles A. Murphy ,  Erich Port

发明人： Hamid Ahmadi ,  Johannes G. Beha ,  Wolfgang E. Denzel ,  Antonius P. Engbersen ,  Ronald P. Luijten ,  Charles A. Murphy ,  Erich Port

IPC分类号： H04L12/56

CPC分类号： H04L49/25 ,  H04L49/101 ,  H04L49/1523 ,  H04L49/254 ,  H04L49/3027 ,  H04L49/45

摘要： In a switching system interconnecting transmission links (21-i, 23-i) on which circuit switched (CS) and packet switched (PS) information is transferred, a switch fabric (11) is provided which interconnects a plurality of input ports (15-i) to a plurality of output ports (19-i). The information arriving on incoming links is converted in switch adapters (13-i) to uniform minipackets, each having a routing address designating the required output port. The switch fabric consists of parallel equal switching slices, e.g. binary routing trees (71), which transfer in a non-blocking manner each minipacket from its input port to one output port in response to the routing address. Collecting means (73, 75) are provided at each output port for accepting the minipackets arriving from the different input ports.

公开(公告)号：US06597671B1

公开(公告)日：2003-07-22

申请号：US09140213

申请日：1998-08-26

申请人： Hamid Ahmadi ,  David Bantz ,  Frederic Bauchot ,  Colin Harrison ,  Arvind Krishna ,  Jose Louis Martinez ,  Kadathur Natarajan ,  Michelle Wetterwald

发明人： Hamid Ahmadi ,  David Bantz ,  Frederic Bauchot ,  Colin Harrison ,  Arvind Krishna ,  Jose Louis Martinez ,  Kadathur Natarajan ,  Michelle Wetterwald

IPC分类号： H04J1306

CPC分类号： H04W28/26 ,  H04B1/713 ,  H04B1/715 ,  H04B2001/7152 ,  H04W16/12 ,  H04W28/16 ,  H04W60/00 ,  H04W64/006 ,  H04W72/00 ,  H04W84/12 ,  H04W88/04 ,  H04W88/08

摘要： In a wireless communication system (106), base stations (118, 120) are connected to a backbone network (116) such as a wired LAN and act as access points and relays for remote stations (128, 132, 136). A remote station registers and performs bidirectional communication with one of the base stations designated as its home base station. Base stations have overlapping coverage areas where a remote station is within reception range of several base stations. Such communication system may for instance be a multicell radio LAN using frequency hopping signaling. The method allows to reuse a limited number of network resources such as frequency hopping patterns and assign the same resource to several active base stations. Upon request from a base station, a network controller (110) connected to the backbone network computes a distance index between the requesting base station and the other active base stations and assigns to the requesting base station the same network resource as the one assigned to another base station with the highest distance index. Information about cells overlaps is centralized in a control database (109) and used by the network controller to compute distance indexes.

摘要翻译： 在无线通信系统（106）中，基站（118,120）连接到诸如有线LAN的骨干网络（116），并且用作远程站（128,132,136）的接入点和中继站。 远程站注册并与指定为其家庭基站的基站之一进行双向通信。 基站具有重叠的覆盖区域，其中远程站在几个基站的接收范围内。 这种通信系统可以例如是使用跳频信令的多单元无线电LAN。 该方法允许重用有限数量的网络资源，例如跳频模式，并将相同的资源分配给多个活动基站。 根据来自基站的请求，连接到骨干网的网络控制器（110）计算请求基站与其他有效基站之间的距离索引，并向请求基站分配与分配给另一个基站的相同的网络资源 基站距离指数最高。 关于细胞重叠的信息集中在控制数据库（109）中，由网络控制器用于计算距离指数。

公开(公告)号：US5781536A

公开(公告)日：1998-07-14

申请号：US468155

申请日：1995-06-06

申请人： Hamid Ahmadi ,  David Bantz ,  Frederic Bauchot ,  Colin Harrison ,  Arvind Krishna ,  Jose Louis Martinez ,  Kadathur Natarajan ,  Michelle Wetterwald

发明人： Hamid Ahmadi ,  David Bantz ,  Frederic Bauchot ,  Colin Harrison ,  Arvind Krishna ,  Jose Louis Martinez ,  Kadathur Natarajan ,  Michelle Wetterwald

IPC分类号： H04B1/713 ,  H04B1/715 ,  H04L12/28 ,  H04L12/56 ,  H04W16/12 ,  H04W28/26 ,  H04W72/00 ,  H04W84/12 ,  H04W88/08 ,  H04Q7/36

CPC分类号： H04W28/26 ,  H04B1/713 ,  H04B1/715 ,  H04B2001/7152 ,  H04W16/12 ,  H04W28/16 ,  H04W60/00 ,  H04W64/006 ,  H04W72/00 ,  H04W84/12 ,  H04W88/04 ,  H04W88/08

摘要： In a wireless communication system (106), base stations (118, 120) are connected to a backbone network (116) such as a wired LAN and act as access points and relays for remote stations (128, 132, 136). A remote station registers and performs bidirectional communication with one of the base stations designated as its home base station. Base stations have overlapping coverage areas where a remote station is within reception range of several base stations. Such communication system may for instance be a multicell radioLAN using frequency hopping signaling. The method allows reuse of a limited number of network resources such as frequency hopping patterns and assign the same resource to several active base stations. Upon request from a base station, a network controller (110) connected to the backbone network computes a distance index between the requesting base station and the other active base stations and assigns to the requesting base station the same network resource as the one assigned to another base station with the highest distance index. Information about cells overlaps is centralized in a control database (109) and used by the network controller to compute distance indexes.

摘要翻译： 在无线通信系统（106）中，基站（118,120）连接到诸如有线LAN的骨干网络（116），并且用作远程站（128,132,136）的接入点和中继站。 远程站注册并与指定为其家庭基站的基站之一进行双向通信。 基站具有重叠的覆盖区域，其中远程站在几个基站的接收范围内。 这样的通信系统可以例如是使用跳频信令的多单元无线LAN。 该方法允许重用有限数量的网络资源，例如跳频模式，并将相同的资源分配给几个活动基站。 根据来自基站的请求，连接到骨干网的网络控制器（110）计算请求基站与其他有效基站之间的距离索引，并向请求基站分配与分配给另一个基站的相同的网络资源 基站距离指数最高。 关于细胞重叠的信息集中在控制数据库（109）中，由网络控制器用于计算距离指数。

公开(公告)号：US5477530A

公开(公告)日：1995-12-19

申请号：US358329

申请日：1994-12-19

申请人： Hamid Ahmadi ,  Jeane S. Chen ,  Krishna Arvind ,  Ofek Yoram

发明人： Hamid Ahmadi ,  Jeane S. Chen ,  Krishna Arvind ,  Ofek Yoram

IPC分类号： G06F13/00 ,  H04L12/46 ,  H04J3/02 ,  H04L12/43 ,  H04L12/66

CPC分类号： H04L12/462

摘要： First and second multi-node communication paths are connected via a bridge node. Each path employs a quota allocation scheme for access thereto by the nodes thereon. A first quota allocation signal is propagated on the first path and a second quota allocation signal is propagated on the second path, the second signal controlling access to the second path for the purpose of transmitting information to the bridge node destined for the first path. The quota allocation signals are synchronized to ensure that there is at most one circulation of the second quota allocation signal for each circulation of the first quota allocation signal. Information from the first path to the second path is deflected from the bridge node and around the first path if the bridge node is full. If the information is transmitted in sequenced packets, a deflected packet is assigned a deflection number. The bridge node tracks deflections via the deflection numbers.

摘要翻译： 第一和第二多节点通信路径经由网桥节点连接。 每个路径采用配额分配方案来访问其上的节点。 第一配额分配信号在第一路径上传播，并且第二配额分配信号在第二路径上传播，第二信号控制对第二路径的访问，以将信息发送到目的地为第一路径的网桥节点。 配额分配信号被同步，以确保第一配额分配信号的每个循环的第二配额分配信号至多有一个循环。 如果桥节点已满，则从第一路径到第二路径的信息从网桥节点和第一路径周围偏转。 如果信息以顺序分组传输，则偏转的分组被分配偏转数。 桥节点通过偏转数跟踪偏转。

公开(公告)号：US5613198A

公开(公告)日：1997-03-18

申请号：US402767

申请日：1995-03-13

申请人： Hamid Ahmadi ,  Amotz Bar-Noy ,  Ilan Kessler ,  Arvind Krishna

发明人： Hamid Ahmadi ,  Amotz Bar-Noy ,  Ilan Kessler ,  Arvind Krishna

IPC分类号： H04L12/28 ,  H04W4/06 ,  H04W16/02 ,  H04W16/10 ,  H04W16/14 ,  H04W72/08 ,  H04W72/12 ,  H04W74/00 ,  H04W84/04 ,  H04W84/12 ,  H04Q7/36

CPC分类号： H04W72/1231 ,  H04W16/10 ,  H04W28/16 ,  H04W72/0453 ,  H04W72/082 ,  H04W84/12

摘要： A method of dynamically allocating bandwidth of channels to cells in a communications cellular network according to user demand. Groups of cells are formed so as to minimize interference within each group, and a particular channel is assigned to each of the groups. The bandwidth of each channel then is dynamically allocated by time division to each of the cells in the assigned group according to user demand in each of the cells thereof.

摘要翻译： 根据用户需求，动态地将通道的带宽分配给通信蜂窝网络中的小区的方法。 形成单元组以使每个组内的干扰最小化，并且将特定频道分配给每个组。 然后，根据每个信道的每个小区中的用户需求，每个信道的带宽被动态地分配给分配组中的每个小区。

公开(公告)号：US5289462A

公开(公告)日：1994-02-22

申请号：US932440

申请日：1992-08-19

申请人： Hamid Ahmadi ,  Roch Guerin ,  Levent Gun

发明人： Hamid Ahmadi ,  Roch Guerin ,  Levent Gun

IPC分类号： H04L12/56 ,  H04Q11/04

CPC分类号： H04L12/5602 ,  H04L2012/5632 ,  H04L2012/5636 ,  H04L2012/5637

摘要： In a packet communications network, the addition or deletion of a connection to the network by a user is governed by a link traffic metric which represents the effective capacity of each link in the network which participates in the packet connection route. The link metric is calculated in real-time and updated by simple vector addition or subtraction. Moreover, this link metric is also used to calculate leaky bucket parameters which govern the access of packets to the network once the connection is set up. A packet network using these link metrics and metric generation techniques provides maximum packet throughput while, at the same time, preserving grade of service guarantees.

摘要翻译： 在分组通信网络中，由用户添加或删除与网络的连接由链路流量度量来管理，链路流量度量表示参与分组连接路由的网络中的每个链路的有效容量。 链接度量是通过简单的向量加法或减法实时计算和更新的。 此外，该链接度量还用于计算泄漏桶参数，其在连接建立后控制分组到网络的访问。 使用这些链接度量和度量生成技术的分组网络提供最大的分组吞吐量，同时保持服务等级的保证。

公开(公告)号：US5311513A

公开(公告)日：1994-05-10

申请号：US943097

申请日：1992-09-10

申请人： Hamid Ahmadi ,  Jeffrey, H. Derby ,  Roch Guerin ,  Levent Gun ,  Gerald A. Marin ,  Mahmoud Naghshineh ,  Khosrow Sohraby

发明人： Hamid Ahmadi ,  Jeffrey, H. Derby ,  Roch Guerin ,  Levent Gun ,  Gerald A. Marin ,  Mahmoud Naghshineh ,  Khosrow Sohraby

IPC分类号： H04L29/06 ,  H04L12/56

CPC分类号： H04L12/5602 ,  H04L2012/5636 ,  H04L2012/5637 ,  H04L2012/5651 ,  H04L2012/568

摘要： A congestion control system for packet communications networks in which access to the network is controlled to prevent such congestion. Packets within the prespecified statistical description of each packet source are marked as high priority ("green" packets) while packets exceeding the pre-specified characteristics are marked with a lower priority ("red" packets). The overall red packet rate is limited to prevent red packet saturation of the network. Packets are marked red for a continuous train of successive red packets. The introduction of red packets into the network is subjected to a degree of hysteresis to provide better interaction with higher layer error recovery protocols. The amount of hysteresis introduced into the red packet marking can be fixed or varied, depending on the statistics of the incoming data packets at the entry point to the network.

摘要翻译： 用于分组通信网络的拥塞控制系统，其中控制对网络的访问以防止这种拥塞。 每个分组源的预先指定的统计描述中的分组被标记为高优先级（“绿色”分组），而超过预定特性的分组被标记为较低优先级（“红色”分组））。 整体红包速率受到限制，以防止网络的红包饱和。 数据包被标记为红色，用于连续的连续红色数据包。 引入红包到网络中受到一定程度的迟滞，以提供与更高层错误恢复协议的更好的交互。 引入到红包标记中的迟滞量可以是固定的或变化的，具体取决于入网点到网络的输入数据包的统计。

公开(公告)号：US5233604A

公开(公告)日：1993-08-03

申请号：US874917

申请日：1992-04-28

申请人： Hamid Ahmadi ,  Jeane S. Chen ,  Chee-Seng Chow ,  Roch Guerin ,  Levent Gun ,  Anthony M. Lee ,  Theodore E. Tedijanto

发明人： Hamid Ahmadi ,  Jeane S. Chen ,  Chee-Seng Chow ,  Roch Guerin ,  Levent Gun ,  Anthony M. Lee ,  Theodore E. Tedijanto

IPC分类号： G06F13/00 ,  H04L12/56

CPC分类号： H04L45/123 ,  H04L45/12

摘要： A packet communications system utilizes a route determining mechanism by identifying principal paths between the source and the destination in the system. Principal paths are minimum hop count paths with a transmission delay less than a specified threshold. Principal path links are accepted as legs of the optimum path, if feasible, i.e., if the resulting load on the link is less than a specified principal threshold. Secondary links are accepted only if the resulting load on the link is less than a specified secondary threshold, where the secondary threshold is less than the principal threshold. All paths must also have a transmission delay less than a specified threshold. Each request for a route includes the source node, the destination node, the load required, the maximum transmission delay and, if desired, the quality of service parameters which all of the legs of the route must satisfy. A modified Bellman-Ford breadth-first search algorithm is used to identify the principal links and, using these principal link identifications, determining the optimum path.

公开(公告)号：US5870385A

公开(公告)日：1999-02-09

申请号：US798817

申请日：1997-02-12

申请人： Hamid Ahmadi ,  David Bantz ,  Frederic Bauchot ,  Colin Harrison ,  Arvind Krishna ,  Jose Louis Martinez ,  Kadathur Natarajan ,  Michelle Wetterwald

发明人： Hamid Ahmadi ,  David Bantz ,  Frederic Bauchot ,  Colin Harrison ,  Arvind Krishna ,  Jose Louis Martinez ,  Kadathur Natarajan ,  Michelle Wetterwald

IPC分类号： H04B1/713 ,  H04B1/715 ,  H04L12/28 ,  H04L12/56 ,  H04W16/12 ,  H04W28/26 ,  H04W72/00 ,  H04W84/12 ,  H04W88/08 ,  H04J13/06 ,  H04Q7/36

CPC分类号： H04W28/26 ,  H04B1/713 ,  H04B1/715 ,  H04B2001/7152 ,  H04W16/12 ,  H04W28/16 ,  H04W60/00 ,  H04W64/006 ,  H04W72/00 ,  H04W84/12 ,  H04W88/04 ,  H04W88/08

摘要： In a wireless communication system (106), base stations (118, 120) are connected to a backbone network (116) such as a wired LAN and act as access points and relays for remote stations (128, 132, 136). A remote station registers and performs bidirectional communication with one of the base stations designated as its home base station. Base stations have overlapping coverage areas where a remote station is within reception range of several base stations. Such communication system may for instance be a multicell radio LAN using frequency hopping signaling. The method allows reuse of a limited number of network resources such as frequency hopping patterns and assign the same resource to several active base stations. Upon request from a base station, a network controller (110) connected to the backbone network computes a distance index between the requesting base station and the other active base stations and assigns to the requesting base station the same network resource as the one assigned to another base station with the highest distance index. Information about cells overlaps is centralized in a control database (109) and used by the network controller to compute distance indexes.

摘要翻译： 在无线通信系统（106）中，基站（118,120）连接到诸如有线LAN的骨干网络（116），并且用作远程站（128,132,136）的接入点和中继站。 远程站注册并与指定为其家庭基站的基站之一进行双向通信。 基站具有重叠的覆盖区域，其中远程站在几个基站的接收范围内。 这种通信系统可以例如是使用跳频信令的多单元无线电LAN。 该方法允许重用有限数量的网络资源，例如跳频模式，并将相同的资源分配给几个活动基站。 根据来自基站的请求，连接到骨干网的网络控制器（110）计算请求基站与其他有效基站之间的距离索引，并向请求基站分配与分配给另一个基站的相同的网络资源 基站距离指数最高。 关于细胞重叠的信息集中在控制数据库（109）中，由网络控制器用于计算距离指数。

公开(公告)号：US5533026A

公开(公告)日：1996-07-02

申请号：US398717

申请日：1995-03-06

申请人： Hamid Ahmadi ,  Frederic J. Bauchot ,  Roselyne Bonnet ,  Ilan Kessler ,  Arvind Krishna ,  Fabien P. Lanne ,  Mahmoud Naghshineh ,  Catherine Solar ,  Michelle M. Wetterwald

发明人： Hamid Ahmadi ,  Frederic J. Bauchot ,  Roselyne Bonnet ,  Ilan Kessler ,  Arvind Krishna ,  Fabien P. Lanne ,  Mahmoud Naghshineh ,  Catherine Solar ,  Michelle M. Wetterwald

IPC分类号： G06F13/00 ,  H04B7/26 ,  H04L12/56 ,  H04L29/06 ,  H04L29/12 ,  H04W8/26 ,  H04W40/24 ,  H04W40/26 ,  H04W40/36 ,  H04W80/04 ,  H04W92/02 ,  H04B7/24

CPC分类号： H04W92/02 ,  H04L45/02 ,  H04L29/12009 ,  H04L61/00 ,  H04W40/248 ,  H04W40/26 ,  H04W40/36 ,  H04W8/26 ,  H04W80/04

摘要： A communications network having a number of routers, a number of base stations and a number of mobile units maintains communications with the mobile units by assigning a unique address known to the routing entities of the network to each mobile unit. By including the mobile units unique address in topology updates of the network, the location of the mobile unit at any time is made known to all routers of the network. That is, once a mobile unit moves into a domain of a new access point and establishes a new link with the new access point, it uses the topology update mechanism of the network to make its new location known to all routers. Once a router of the network receives topology update information specific to the mobile unit's new location, it updates its routing table such that packets destined to the mobile unit are routed in a path which terminates at the mobile unit and contains its new access point.

摘要翻译： 具有多个路由器，多个基站和多个移动单元的通信网络通过向每个移动单元分配网络的路由实体已知的唯一地址来维护与移动单元的通信。 通过将移动单元的唯一地址包括在网络的拓扑更新中，移动单元在任何时间的位置对于网络的所有路由器都是已知的。 也就是说，一旦移动单元移动到新的接入点的域中并与新的接入点建立新的链路，则它使用网络的拓扑更新机制来使其新的位置被所有路由器都知道。 一旦网络的路由器接收到特定于移动单元的新位置的拓扑更新信息，则它更新其路由表，使得去往移动单元的分组在终止于移动单元的路径中路由并且包含其新的接入点。