公开(公告)号：US5077483A

公开(公告)日：1991-12-31

申请号：US349281

申请日：1989-05-08

申请人： Thomas J. Cloonan ,  Stephen J. Hinterlong ,  Harvard S. Hinton ,  Frank K. Hwang ,  Jurgen Jahns ,  Jack L. Jewell ,  Anthony L. Lentine ,  Frederick B. McCormick, Jr. ,  David A. B. Miller ,  Miles J. Murdocca ,  Michael E. Prise ,  Gaylord W. Richards

发明人： Thomas J. Cloonan ,  Stephen J. Hinterlong ,  Harvard S. Hinton ,  Frank K. Hwang ,  Jurgen Jahns ,  Jack L. Jewell ,  Anthony L. Lentine ,  Frederick B. McCormick, Jr. ,  David A. B. Miller ,  Miles J. Murdocca ,  Michael E. Prise ,  Gaylord W. Richards

IPC分类号： H04B10/02 ,  H04Q3/52 ,  H04Q11/00

CPC分类号： H04Q11/0062 ,  H04Q11/0005 ,  H04Q2011/0052 ,  H04Q2011/0081 ,  H04Q2011/009

摘要： A reduced-blocking system where a perfect shuffle equivalent network having a plurality of node stages successively interconnected by link stages, is advantageously combined with expansion before the node stages and/or concentration after the node stages in a manner allowing the design of a system with arbitrarily low or zero blocking probability. An illustrative photonic system implementation uses free-space optical apparatus to effect a low loss, crossover interconnection of two-dimensional arrays of switching nodes comprising, for example, symmetric self electro-optic effect devices (S-SEEDs). Several low loss beam conbination techniques are used to direct multiple arrays of beams to an S-SEED array, and to redirect a reflected output beam array to a subsequent node stage.

公开(公告)号：US4989022A

公开(公告)日：1991-01-29

申请号：US382509

申请日：1989-07-19

申请人： Frank K. Hwang ,  Gaylord W. Richards

发明人： Frank K. Hwang ,  Gaylord W. Richards

IPC分类号： H04Q3/68

CPC分类号： H04Q3/68 ,  Y10T307/747

摘要： A switching network where a large class of combinatorial designs which are well known in the mathematical literature are for the first time applied to advantageously define the pattern of permanent connections effected between network input channels and initial network crosspoints, illustratively by a connection arrangement of a two-stage, rearrangeable network. The class of combinatorial designs comprises designs of three types: (1) block designs, (2) orthogonal arrays, and (3) difference sets. Each of these is used in a unique manner to derive an advantageous pattern of permanent connections.

摘要翻译： 在数学文献中众所周知的大类组合设计的交换网络首次被应用于有利地定义在网络输入信道和初始网络交叉点之间实现的永久连接的模式，示例性地由两个 级，可重排网络。 组合设计类包括三种类型的设计：（1）块设计，（2）正交阵列和（3）差集。 以独特的方式使用它们中的每一个以得到永久连接的有利模式。

公开(公告)号：US4988993A

公开(公告)日：1991-01-29

申请号：US382511

申请日：1989-07-19

申请人： Frank K. Hwang ,  Gaylord W. Richards

发明人： Frank K. Hwang ,  Gaylord W. Richards

IPC分类号： H04Q3/68

CPC分类号： H04Q3/68 ,  Y10T307/747

摘要： A switching network where a large class of combinatorial designs which are well known in the mathematical literature are for the first time applied to advantageously define the pattern of permanent connections effected between network input channels and initial network corsspoints, illustratively by a connection arrangement of a two-stage, rearrangeable network. The class of combinatorial designs comprises designs of three types: (1) block designs, (2) orthogonal arrays, and (3) difference sets. Each of these is used in a unique manner to derive an advantageous pattern of permanent connections.

摘要翻译： 在数学文献中众所周知的大类组合设计的交换网络首次被应用于有利地限定在网络输入通道和初始网络点之间实现的永久连接的模式，示例性地由两个 级，可重排网络。 组合设计类包括三种类型的设计：（1）块设计，（2）正交阵列和（3）差集。 以独特的方式使用它们中的每一个以得到永久连接的有利模式。

公开(公告)号：US4922245A

公开(公告)日：1990-05-01

申请号：US382510

申请日：1989-07-19

申请人： Frank K. Hwang ,  Gaylord W. Richards

发明人： Frank K. Hwang ,  Gaylord W. Richards

IPC分类号： H04Q3/68

CPC分类号： H04Q3/68 ,  Y10T307/747

摘要： A switching network where a large class of combinatorial designs which are well known in the mathematical literature are for the first time applied to advantageously define the pattern of permanent connections effected between network input channels and initial network crosspoints, illustratively by a connection arrangement of a two-stage, rearrangeable network. The class of combinatorial designs comprises designs of three types: (1) block designs, (2) orthogonal arrays, and (3) difference sets. Each of these is used in a unique manner to derive an advantageous pattern of permanent connections.

摘要翻译： 在数学文献中众所周知的大类组合设计的交换网络首次被应用于有利地定义在网络输入信道和初始网络交叉点之间实现的永久连接的模式，示例性地由两个 级，可重排网络。 组合设计类包括三种类型的设计：（1）块设计，（2）正交阵列和（3）差集。 以独特的方式使用它们中的每一个以得到永久连接的有利模式。

公开(公告)号：US4887079A

公开(公告)日：1989-12-12

申请号：US946431

申请日：1986-12-23

申请人： Frank K. Hwang ,  Gaylord W. Richards

发明人： Frank K. Hwang ,  Gaylord W. Richards

IPC分类号： H04Q3/68

CPC分类号： H04Q3/68 ,  Y10T307/747

摘要： A switching network where a large class of combinatorial designs which are well known in the mathematical literature are for the first time applied to advantageously define the pattern of permanent connections effected between network input channels and initial network crosspoints, illustratively by a connection arrangement of a two-stage, rearrangeable network. The class of combinatorial designs comprises designs of three types: (1) block designs, (2) orthogonal arrays, and (3) difference sets. Each of these is used in a unique manner to derive an advantageous pattern of permanent connections.

摘要翻译： 在数学文献中众所周知的大类组合设计的交换网络首次被应用于有利地定义在网络输入信道和初始网络交叉点之间实现的永久连接的模式，示例性地由两个 级，可重排网络。 组合设计类包括三种类型的设计：（1）块设计，（2）正交阵列和（3）差集。 以独特的方式使用它们中的每一个以得到永久连接的有利模式。

公开(公告)号：US4944029A

公开(公告)日：1990-07-24

申请号：US382501

申请日：1989-07-19

申请人： Frank K. Hwang ,  Gaylord W. Richards

发明人： Frank K. Hwang ,  Gaylord W. Richards

IPC分类号： H04Q3/68

CPC分类号： H04Q3/68 ,  Y10T307/747

摘要： A switching network where a large class of combinatorial designs which are well known in the mathematical literature are for the first time applied to advantageously define the pattern of permanent connections effected between network input channels and initial network crosspoints, illustratively by a connection arrangement of a two-stage, rearrangeable network. The class of combinatorial designs comprises designs of three types: (1) block designs, (2) orthogonal arrays, and (3) difference sets. Each of these is used in a unique manner to derive an advantageous pattern of permanent connections.

公开(公告)号：US4914430A

公开(公告)日：1990-04-03

申请号：US382508

申请日：1989-07-19

申请人： Frank K. Hwang ,  Gaylord W. Richards

发明人： Frank K. Hwang ,  Gaylord W. Richards

IPC分类号： H04Q3/68

CPC分类号： H04Q3/68 ,  Y10T307/747

摘要： A switching network where a large class of combinatorial designs which are well known in the mathematical literature are for the first time applied to advantageously define the pattern of permanent connections effected between network input channels and initial network crosspoints, illustratively by a connection arrangement of a two-stage, rearrangeable network. The class of combinatorial designs comprises designs of three types: (1) block designs, (2) orthogonal arrays, and (3) difference sets. Each of these is used in a unique manner to derive an advantageous pattern of permanent connections.

公开(公告)号：US5513379A

公开(公告)日：1996-04-30

申请号：US238138

申请日：1994-05-04

申请人： Mathilde Benveniste ,  Albert G. Greenberg ,  Frank K. Hwang ,  Boris D. Lubachevsky ,  Paul E. Wright

发明人： Mathilde Benveniste ,  Albert G. Greenberg ,  Frank K. Hwang ,  Boris D. Lubachevsky ,  Paul E. Wright

IPC分类号： H04B7/26 ,  H04W16/06 ,  H04W16/14 ,  H04W28/26 ,  H04W72/04 ,  H04W74/00 ,  H04Q7/00

CPC分类号： H04W28/26 ,  H04W16/06 ,  H04W72/06 ,  H04W74/00

摘要： A communications system and method of ordered borrowing which facilitates dynamic access to a global channel set that has been partitioned into subsets, with each cell of the system being assigned a particular subset of the channel set. The assignment of channel subsets is performed in such a way as to respect various constraints imposed by the physical layout. Calls originating in a cell are first assigned to the channels allocated to the base station of that cell, in an order determined by the cell. Once the allotted channels are exhausted, i.e. in the busy state, the cell attempts to borrow channels from those allotted to the base stations of neighboring cells in a specified order. The borrowing cell borrows a specified number of channels from each neighbor before returning to a particular cell to borrow additional channels. The channels borrowed from a neighbor are accessed in an order which is substantially the reverse of the order in which they are accessed by the owner cell. This prescribes, for each cell, a prespecified order in which the entire set of channels may be accessed by calls originating in that cell.

摘要翻译： 一种有序借用的通信系统和方法，其有助于对已经被划分成子集的全局信道集的动态访问，其中系统的每个小区被分配了信道集的特定子集。 以这样的方式执行信道子集的分配，以便尊重由物理布局施加的各种约束。 起始于小区的呼叫首先按照小区确定的顺序分配给分配给该小区的基站的信道。 一旦分配的信道被耗尽，即处于忙状态，小区尝试以指定的顺序从分配给相邻小区的基站的信道中借用信道。 借用单元在返回到特定单元格借用附加通道之前，从每个邻居借用指定数量的通道。 从邻居借用的信道以与所有者小区访问顺序基本相反的顺序被访问。 这规定了对于每个小区，预先指定的顺序，其中整个信道组可以通过源自该小区的呼叫来访问。