公开(公告)号：US06704311B1

公开(公告)日：2004-03-09

申请号：US09344781

申请日：1999-06-25

申请人： Mooi Choo Chuah ,  Bharat Tarachand Doshi ,  Anlu Yan ,  On-Ching Yue

发明人： Mooi Choo Chuah ,  Bharat Tarachand Doshi ,  Anlu Yan ,  On-Ching Yue

IPC分类号： H04L1256

CPC分类号： H04L65/4084 ,  H04L12/6418 ,  H04L29/06027 ,  H04L65/608 ,  H04L67/00 ,  H04L69/16 ,  H04L69/329

摘要： An Internet Protocol (IP)-based network incorporates an application level switching server and a number of packet endpoints. A packet endpoint multiplexes application sessions destined for different packet endpoints into one multiplexed session that is terminated with the application level switching server. The latter extracts each application session (or packets associated therewith) and repackages, or switches, them into other multiplexed sessions such that at least two switched packets are transmitted to different packet endpoints. The multiplexed sessions utilize either RTP/UDP/IP or UDP/IP encapsulation.

摘要翻译： 基于互联网协议（IP）的网络集成了应用级交换服务器和多个分组端点。 分组端点将发往不同分组端点的应用会话复用到由应用级交换服务器终止的一个多路复用会话中。 后者提取每个应用程序会话（或与之相关的数据包）和重新包装，或者将它们切换到其他复用的会话中，使得至少两个交换分组被发送到不同的分组端点。 复用的会话使用RTP / UDP / IP或UDP / IP封装。

公开(公告)号：US06993021B1

公开(公告)日：2006-01-31

申请号：US09264053

申请日：1999-03-08

申请人： Mooi Choo Chuah ,  Wolfgang Fleischer ,  Anlu Yan ,  On-Ching Yue

发明人： Mooi Choo Chuah ,  Wolfgang Fleischer ,  Anlu Yan ,  On-Ching Yue

IPC分类号： H04L12/56

CPC分类号： H04L65/607 ,  H04L29/06 ,  H04L29/06027 ,  H04L65/608 ,  H04L65/80 ,  H04L69/04 ,  H04L69/32

摘要： A packet encapsulation scheme for multiplexing application sessions—Lightweight IP Encapsulation (LIPE)—is described. An LIPE packet comprises at least one multiplexing header (NH) and associated multimedia data packet (MDP). The LIPE packet uses UDP/IP as transport. An MH field further comprises a 16-bit a user identifier (UID) field, an 11 bit length indicator (LNG) field, a 1 bit “more” (M) field and an optional payload type/class of service (PT/CoS) field comprising 8 bits.

摘要翻译： 描述了用于复用应用会话的轻量级IP封装（LIPE）的分组封装方案。 LIPE分组包括至少一个复用报头（NH）和相关联的多媒体数据分组（MDP）。 LIPE数据包使用UDP / IP作为传输。 MH字段还包括16位用户标识符（UID）字段，11位长度指示符（LNG）字段，1比特“更多”（M）字段和可选的有效载荷类型/服务等级（PT / CoS ）字段包括8位。

公开(公告)号：US07023884B2

公开(公告)日：2006-04-04

申请号：US09740252

申请日：2000-12-19

申请人： Mooi Choo Chuah ,  Daniel R. Jeske ,  Muralidhran S. Kodialam ,  Ashwin Sampath ,  Anlu Yan ,  On-Ching Yue

发明人： Mooi Choo Chuah ,  Daniel R. Jeske ,  Muralidhran S. Kodialam ,  Ashwin Sampath ,  Anlu Yan ,  On-Ching Yue

IPC分类号： H04J3/06

CPC分类号： H04J3/0667 ,  G06F1/14

摘要： A new algorithm for clock offset estimation for resources distributed across a network (such as the Internet). By exchanging a sequence of time-stamped messages between pairs of network nodes and separately estimating variable delays for each message direction, present inventive embodiments provide estimates for clock offset between node pairs and the bias of such estimates, thereby to permit more accurate correction. Present inventive algorithms operate in a variety of peer and server network configurations while providing significant improvement in convergence speed and accuracy.

公开(公告)号：US06674765B1

公开(公告)日：2004-01-06

申请号：US09172493

申请日：1998-10-14

申请人： Mooi Choo Chuah ,  On-Ching Yue ,  Qinqing Zhang

发明人： Mooi Choo Chuah ,  On-Ching Yue ,  Qinqing Zhang

IPC分类号： H04L1243

CPC分类号： H04W74/0875 ,  H04W84/04 ,  H04W88/08

摘要： The present invention provides methods and apparatus for providing access priority in a MAC protocol of a communications system such as, for example, with respect to UMTS RACH. Particularly, the invention introduces several access priority methodologies including: (i) random chip delay access priority (RCDAP); (ii) random backoff based access priority (RBBAP); (iii) variable logical channel based access priority (VLCAP); (iv) UMTS-specific variable logical channel based access priority (VLCAP′); (v) probability based access priority (PBAP); and (vi) retransmission based access priority (REBAP). Each methodology associates some parameter or parameters to access priority classes in order to influence the likelihood of a remote terminal completing a successful access request to a base station.

摘要翻译： 本发明提供了用于在通信系统的MAC协议中提供访问优先级的方法和装置，例如关于UMTS RACH。 特别地，本发明引入了几种接入优先级方法，包括：（i）随机码片延迟接入优​​先级（RCDAP）; （ii）基于随机回退的访问优先级（RBBAP）; （iii）基于可变逻辑信道的接入优先级（VLCAP）; （iv）基于UMTS的可变逻辑信道接入优先级（VLCAP'）; （v）基于概率的访问优先级（PBAP）; 和（vi）基于重传的访问优先级（REBAP）。 每个方法将一些参数或参数相关联以访问优先级等级，以便影响远程终端完成对基站的成功访问请求的可能性。

公开(公告)号：US06594240B1

公开(公告)日：2003-07-15

申请号：US09172494

申请日：1998-10-14

申请人： Mooi Choo Chuah ,  On-Ching Yue ,  Qinqing Zhang

发明人： Mooi Choo Chuah ,  On-Ching Yue ,  Qinqing Zhang

IPC分类号： H04R700

CPC分类号： H04W74/085 ,  H04W74/0875 ,  H04W84/04 ,  H04W88/08

摘要： The present invention provides methods and apparatus for providing access priority in a MAC protocol of a communications system such as, for example, with respect to UMTS RACH. Particularly, the invention introduces several access priority methodologies including: (i) random chip delay access priority (RCDAP); (ii) random backoff based access priority (RBBAP); (iii) variable logical channel based access priority (VLCAP); (iv) UMTS-specific variable logical channel based access priority (VLCAP′); (v) probability based access priority (PBAP); and (vi) retransmission based access priority (REBAP). Each methodology associates some parameter or parameters to access priority classes in order to influence the likelihood of a remote terminal completing a successful access request to a base station.

摘要翻译： 本发明提供了用于在通信系统的MAC协议中提供访问优先级的方法和装置，例如关于UMTS RACH。 特别地，本发明引入了几种接入优先级方法，包括：（i）随机码片延迟接入优​​先级（RCDAP）; （ii）基于随机回退的访问优先级（RBBAP）; （iii）基于可变逻辑信道的接入优先级（VLCAP）; （iv）基于UMTS的可变逻辑信道接入优先级（VLCAP'）; （v）基于概率的访问优先级（PBAP）; 和（vi）基于重传的访问优先级（REBAP）。 每个方法将一些参数或参数相关联以访问优先级等级，以便影响远程终端完成对基站的成功访问请求的可能性。

公开(公告)号：US06400695B1

公开(公告)日：2002-06-04

申请号：US09172495

申请日：1998-10-14

申请人： Mooi Choo Chuah ,  On-Ching Yue ,  Qinqing Zhang

发明人： Mooi Choo Chuah ,  On-Ching Yue ,  Qinqing Zhang

IPC分类号： H04Q700

CPC分类号： H04W74/0875 ,  H04W84/04 ,  H04W88/08

摘要： The present invention provides methods and apparatus for providing access priority in a MAC protocol of a communications system such as, for example, with respect to UMTS RACH. Particularly, the invention introduces several access priority methodologies including: (i) random chip delay access priority (RCDAP); (ii) random backoff based access priority (RBBAP); (iii) variable logical channel based access priority (VLCAP); (iv) UMTS-specific variable logical channel based access priority (VLCAP′); (v) probability based access priority (PBAP); and (vi) retransmission based access priority (REBAP). Each methodology associates some parameter or parameters to access priority classes in order to influence the likelihood of a remote terminal completing a successful access request to a base station.

摘要翻译： 本发明提供了用于在通信系统的MAC协议中提供访问优先级的方法和装置，例如关于UMTS RACH。 特别地，本发明引入了几种接入优先级方法，包括：（i）随机码片延迟接入优​​先级（RCDAP）; （ii）基于随机回退的访问优先级（RBBAP）; （iii）基于可变逻辑信道的接入优先级（VLCAP）; （iv）基于UMTS的可变逻辑信道接入优先级（VLCAP'）; （v）基于概率的访问优先级（PBAP）; 和（vi）基于重传的访问优先级（REBAP）。 每个方法将一些参数或参数相关联以访问优先级等级，以便影响远程终端完成对基站的成功访问请求的可能性。

公开(公告)号：US08201252B2

公开(公告)日：2012-06-12

申请号：US10232660

申请日：2002-09-03

申请人： Mooi Choo Chuah ,  Wing Cheong Lau ,  On-Ching Yue

发明人： Mooi Choo Chuah ,  Wing Cheong Lau ,  On-Ching Yue

IPC分类号： G06F11/00

CPC分类号： H04L47/10 ,  H04L47/11 ,  H04L47/2441 ,  H04L47/286 ,  H04L47/32 ,  H04L63/0236 ,  H04L63/1458

摘要： The present invention provides systems and methods for providing distributed, adaptive IP filtering techniques used in detecting and blocking IP packets involved in DDOS attacks through the use of Bloom Filters and leaky-bucket concepts to identify “attack” flows. In an exemplary embodiment of the present invention, a device tracks certain criteria of all IP packets traveling from IP sources outside a security perimeter to network devices within the security perimeter. The present invention examines the criteria and places them in different classifications in a uniformly random manner, estimates the amount of criteria normally received and then determines when a group of stored classifications is too excessive to be considered normal for a given period of time. After the device determines the criteria that excessive IP packets have in common, the device then determines rules to identify the packets that meet such criteria and filters or blocks so identified packets.

摘要翻译： 本发明提供了用于提供分布式自适应IP过滤技术的系统和方法，所述技术用于通过使用Bloom Filter和泄漏桶概念识别“攻击”流来检测和阻止涉及DDOS攻击的IP分组。 在本发明的示例性实施例中，设备跟踪从安全边界之外的IP源传播到安全范围内的网络设备的所有IP分组的某些标准。 本发明以均匀随机的方式检查标准并将它们置于不同的分类中，估计正常接收的标准的数量，然后确定一组存储的分类何时太过分，以至于在给定的时间段内不被认为是正常的。 在设备确定过多的IP数据包具有共同之处的标准之后，设备然后确定规则以识别符合这些标准的数据包，并过滤或阻止所识别的数据包。

公开(公告)号：US06693952B1

公开(公告)日：2004-02-17

申请号：US09268799

申请日：1999-03-16

申请人： Mooi Choo Chuah ,  On-Ching Yue ,  Qinqing Zhang

发明人： Mooi Choo Chuah ,  On-Ching Yue ,  Qinqing Zhang

IPC分类号： H04B169

CPC分类号： H04J13/0044 ,  H04J13/20

摘要： In a Universal Mobile Telecommunications System (UMTS) based wireless system, a channelization code-tree is partitioned into two sets: a permanent set and shared a shared set. Those codes in the permanent set are assigned to low data rate users for the duration of a session, or connection. Those codes in the shared set are assigned to high data rate users on a frame-by-frame basis using a downlink shared (DSCH) channel. The partition boundary between the permanent set and the shared set can be dynamically shifted based on traffic conditions.

摘要翻译： 在基于通用移动电信系统（UMTS）的无线系统中，信道化码树被分为两组：永久集合并共享共享集。 永久设置中的代码在会话或连接的持续时间内被分配给低数据速率用户。 共享集中的这些代码使用下行链路共享（DSCH）信道逐帧地分配给高数据速率用户。 永久集和共享集之间的分区边界可以根据流量条件动态移位。

公开(公告)号：US06587672B1

公开(公告)日：2003-07-01

申请号：US09203924

申请日：1998-12-02

申请人： Mooi Choo Chuah ,  On-Ching Yue ,  Qinqing Zhang

发明人： Mooi Choo Chuah ,  On-Ching Yue ,  Qinqing Zhang

IPC分类号： H04B100

CPC分类号： H04W52/362 ,  H04W52/50

摘要： The present invention provides a method for use in a UMTS receiver of detecting a signal transmitted by a UMTS transmitter which includes determining whether the signal is greater than or equal to at least a first power threshold value when the signal is below an initial detection threshold value, and informing the transmitter when the signal is greater than or equal to the first power threshold value such that the transmitter can increase a signal strength of the signal by a first predetermined amount and re-transmit. In another aspect of the invention, a method for use in a UMTS transmitter of power ramping a signal transmitted by the transmitter and received by a UMTS receiver includes increasing a signal strength of the signal by a first predetermined amount when informed by the receiver that the signal is greater than or equal to a first power threshold value but below an initial detection threshold value, and re-transmitting the signal.

摘要翻译： 本发明提供了一种在UMTS接收机中用于检测由UMTS发射机发射的信号的方法，该方法包括当信号低于初始检测阈值时确定信号是否大于或等于至少第一功率阈值 并且当所述信号大于或等于所述第一功率阈值时通知所述发射机，使得所述发射机可以将所述信号的信号强度增加第一预定量并重新发射。 在本发明的另一方面，一种用于在UMTS发射机中使用由发射机发送并由UMTS接收机接收的信号的功率的方法包括：当由接收机通知信号时，将信号的信号强度增加第一预定量， 信号大于或等于第一功率阈值但低于初始检测阈值，并且重新发送信号。

公开(公告)号：US06515994B1

公开(公告)日：2003-02-04

申请号：US09126154

申请日：1998-07-30

申请人： Mooi Choo Chuah ,  Tzyh-Jong Wang ,  On-Ching Yue

发明人： Mooi Choo Chuah ,  Tzyh-Jong Wang ,  On-Ching Yue

IPC分类号： H04J324

CPC分类号： H04L12/185 ,  H04L12/1881 ,  H04L67/06 ,  H04L69/32 ,  H04L69/329

摘要： A method of communication in a communications network permitting efficient asynchronous file transfer from a server to a multiplicity of clients. The method is adaptable to future multicasting, telecommunications and file transfer protocols and provides the benefit of decreased communications network traffic relative to prior art methods with a corresponding savings of server, transmission link, router and router network resources. The method provides for sequential transmission of a dataset in discrete blocks over a single data connection spanning the router network. The method includes subsequent joining of destinations to a transmission already in progress. Each subsequently joined destination begins reception of blocks with the next sequentially transmitted block and continues to receive blocks until all blocks in the dataset have been received. Each subsequently joined destination transmits a status signal to the source to ensure retransmission of blocks transmitted prior to a first received block received at each destination.

摘要翻译： 一种在通信网络中通信的方法，其允许从服务器到多个客户端的高效异步文件传输。 该方法适用于将来的多播，电信和文件传输协议，并且相对于现有技术方法提供减少的通信网络流量的优点，相应地节省了服务器，传输链路，路由器和路由器网络资源。 该方法提供了跨越路由器网络的单个数据连接在离散块中顺序传输数据集。 该方法包括随后将目的地连接到已经进行的传输。 每个随后加入的目的地开始接收具有下一个顺序发送的块的块，并且继续接收块，直到数据集中的所有块已经被接收。 每个随后加入的目的地向源发送状态信号以确保在每个目的地处接收到的第一接收块之前发送的块的重传。