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1. 发明授权

US06813277B2 Method and apparatus enabling multiple access on a broadband communication network 有权
标题翻译：能够在宽带通信网络上进行多次接入的方法和装置
公开(公告)号：US06813277B2
公开(公告)日：2004-11-02
申请号：US10036272
申请日：2001-12-26
申请人： Eugene L. Edmon , Chia-Chang Li , Kotikalapudi Sriram
发明人： Eugene L. Edmon , Chia-Chang Li , Kotikalapudi Sriram
IPC分类号： H04J300
CPC分类号： H04L65/80 , H04J3/1694 , H04L12/2801 , H04L29/06 , H04L29/06027 , H04L2012/561 , H04L2012/5671 , H04L2012/5675 , H04N7/17318 , H04Q11/0478
摘要： A protocol for handling multiple access on broadband communication networks, e.g., fiber/coax networks and wireless networks, supports both continuous bit rate (CBR) and variable bit rate (VBR) traffic representing voice, video telephony, interactive television, and data. The invention is carried out both in customer premise equipment (CPE) at stations, and in a common controller with which all stations communicate. A medium access control (MAC) processor provided in each of the stations and in the common controller divides the time domain for a given RF channel into a series of successive frames, each having a plurality of time slots. Because of the architecture of the communication network, individual stations do not communicate directly with each other, but can receive broadcast messages indicating the status of each time slot, which messages are generated in the common controller and transmitted in a downstream channel. When a station desires to transmit information in the upstream direction, it inserts the information into an available time slot, with availability being determined in accordance with time slot status. Depending upon the type of traffic being originated, a station can indicate to the common controller a need for continued use of the “same” time slot in successive frames. This permits a station, such as a station requiring a CBR connection, to avoid having to contend repeatedly for continued access to the transmission network. In the case of a wireless communication network, the invention is carried out both in mobile stations, and in a base station which acts as a common controller and with which all mobile stations communicate.
摘要翻译：用于处理宽带通信网络（例如，光纤/同轴电缆网络和无线网络）上的多路访问的协议支持代表语音，视频电话，交互式电视和数据的连续比特率（CBR）和可变比特率（VBR）业务。本发明在站点的客户驻地设备（CPE）以及所有站点通信的公共控制器中进行。提供在每个站和公共控制器中的介质访问控制（MAC）处理器将给定RF信道的时域划分为一系列连续的帧，每个帧具有多个时隙。由于通信网络的架构，各个站不直接相互通信，而是可以接收指示每个时隙的状态的广播消息，哪些消息在公共控制器中生成并在下行信道中发送。当站希望在上行方向传输信息时，它将信息插入到可用时隙中，其可用性根据时隙状态确定。根据发起的业务类型，站可以向公共控制器指示在连续帧中继续使用“相同”时隙的需要。这允许诸如要求CBR连接的站之类的站点避免不得不反复争取持续访问传输网络。在无线通信网络的情况下，本发明在移动台以及作为公共控制器的基站中进行，并且所有移动台都与其通信。

2. 发明授权

US5570355A Method and apparatus enabling synchronous transfer mode and packet mode access for multiple services on a broadband communication network 失效
标题翻译：能够在宽带通信网络上实现多个服务的同步传输模式和分组模式接入的方法和装置
公开(公告)号：US5570355A
公开(公告)日：1996-10-29
申请号：US340927
申请日：1994-11-17
申请人： James E. Dail , Chia-Chang Li , Peter D. Magill , Kotikalapudi Sriram , Norman A. Whitaker, Jr.
发明人： James E. Dail , Chia-Chang Li , Peter D. Magill , Kotikalapudi Sriram , Norman A. Whitaker, Jr.
IPC分类号： H04J3/16 , H04J3/00 , H04J3/17 , H04L12/56 , H04L12/64 , H04Q11/04
CPC分类号： H04Q11/0478 , H04L12/6418 , H04J2203/0069 , H04J2203/0089 , H04L2012/5632 , H04L2012/5672 , H04L2012/6421 , H04L2012/6427 , H04L2012/644 , H04L2012/6448 , H04L2012/6462 , H04L2012/6486
摘要： STM traffic, e.g. voice and video telephony (VT), as well as packet mode (e.g. ATM) traffic, e.g. broadcast digital video, interactive television, and data, are transmitted via a multiple access broadband fiber/coaxial cable network. Customer premises equipment (CPE) at stations, and a bandwidth controller, which may be at a head end or central office, with which all stations communicate, work together to adapt to the changing demands of the traffic mix, and efficiently allocate bandwidth to a variety of bursty and isochronous traffic sources. The bandwidth allocation defines two types of time slots, STM and ATM, and divides each frame into two corresponding STM and ATM regions. The boundary between the regions can be changed dynamically. A contention access signaling channel is provided in the STM region, for call control and set-up requests. Within the STM region, the time slots can be of variable length and be allocated on a per call basis; the length of the time slots is proportional to the bandwidth requirement of STM calls. Within the ATM region, the time slots are of fixed length, each capable of accommodating one ATM cell. Further, the fixed length ATM time slots may be reserved for a particular user for the duration of a call, or may be shared through a contention process. At least one contention ATM time slot is always made available for signaling messages related to ATM call control and set-up requests. The downstream time frame is structured in a similar manner, but includes an additional MAP field to transmit to the stations ATM time slot allocation and status information for time slots in the upstream channel.
摘要翻译： STM业务，例如语音和视频电话（VT），以及分组模式（例如ATM）业务，例如。广播数字视频，交互式电视和数据通过多址宽带光纤/同轴电缆网络传输。站点的客户端设备（CPE）以及可能位于所有站点通信的前端或中心局的带宽控制器，一起工作以适应流量混合的不断变化的需求，并且有效地将带宽分配给各种突发和同步流量来源。带宽分配定义了两种类型的时隙STM和ATM，并将每个帧划分为两个对应的STM和ATM区域。区域之间的边界可以动态变化。在STM区域中提供争用接入信令信道，用于呼叫控制和建立请求。在STM区域内，时隙可以是可变长度，并且按每个呼叫分配; 时隙的长度与STM呼叫的带宽要求成比例。在ATM区域内，时隙是固定长度的，每个时隙可容纳一个ATM信元。此外，固定长度的ATM时隙可以在呼叫期间为特定用户保留，或者可以通过争用过程共享。总是使至少一个争用ATM时隙可用于与ATM呼叫控制和建立请求有关的信令消息。下游时间帧以类似的方式构成，但是包括附加的MAP字段，用于向站中的ATM时隙分配和上行信道中的时隙的状态信息进行发送。

3. 发明授权

US5953344A Method and apparatus enabling enhanced throughput efficiency by use of dynamically adjustable mini-slots in access protocols for shared transmission media 失效
标题翻译：通过使用用于共享传输介质的接入协议中的动态可调小型时隙来实现提高吞吐量效率的方法和装置
公开(公告)号：US5953344A
公开(公告)日：1999-09-14
申请号：US762789
申请日：1996-12-10
申请人： James E. Dail , Chia-Chang Li , Peter D. Magill , Kotikalapudi Sriram
发明人： James E. Dail , Chia-Chang Li , Peter D. Magill , Kotikalapudi Sriram
IPC分类号： H04J3/16 , H04L12/56 , H04L12/64 , H04N21/222 , H04N21/2381 , H04N21/2385 , H04N21/239 , H04N21/61 , H04N21/643 , H04Q11/04 , H04L5/22
CPC分类号： H04N21/2381 , H04J3/1694 , H04L12/6418 , H04N21/2221 , H04N21/2385 , H04N21/239 , H04N21/6118 , H04N21/64307 , H04Q11/0478 , H04J2203/0069 , H04L2012/5605 , H04L2012/5606 , H04L2012/561 , H04L2012/5632 , H04L2012/6427 , H04L2012/6456
摘要： A head-end dynamically allocates bandwidth of a communications channel as a function of the type of communications traffic. In particular, the head-end communicates to subscriber stations via a broadband cable network using an access protocol, which is modified to provide a variable number of mini-slots and a variable number of data slots in each frame. Each mini-slot is used to request assignment of a data slot(s) to subscriber stations for the communication of information and, also, as a vehicle to resolve contention between subscriber stations. The head-end dynamically adjusts the number of mini-slots over a period time as a function of the type of communications traffic, e.g., bursty and isochronous traffic sources. Any variation in the number of mini-slots concomitantly effects the number of data slots available to communicate information. For example, less mini-slots provides more data slots. As a result, the dynamic adjustment of the number of mini-slots allows the head-end to more efficiently allocate bandwidth on the communications channel.
摘要翻译：根据通信流量的类型，头端动态地分配通信信道的带宽。特别地，头端通过使用接入协议的宽带有线网络与用户站通信，接入协议被修改为在每帧中提供可变数目的小时隙和可变数量的数据时隙。每个小时隙用于请求分配给订户站的数据时隙用于信息的通信，并且还用作解决用户站之间争用的工具。前端根据通信业务的类型（例如突发和等时业务源）动态地调整一段时间内的小时隙数量。迷你时隙数量的任何变化同时影响可用于传达信息的数据时隙数量。例如，较少的迷你插槽提供更多的数据插槽。结果，微时隙的数量的动态调整允许前端在通信信道上更有效地分配带宽。

4. 发明授权

US06282196B1 Dynamic build-out approach for use in packet voice systems 失效
标题翻译：用于分组语音系统的动态构建方法
公开(公告)号：US06282196B1
公开(公告)日：2001-08-28
申请号：US08900000
申请日：1997-07-24
申请人： Terry Gregory Lyons , Kotikalapudi Sriram , Yung-Terng Wang
发明人： Terry Gregory Lyons , Kotikalapudi Sriram , Yung-Terng Wang
IPC分类号： H04L1256
CPC分类号： H04Q11/0478 , H04L2012/5656 , H04L2012/5671 , H04L2012/5681
摘要： In a packet voice system, a dynamic build-out delay approach in a receiver during the duration of a call. In particular, the build-out delay is applied at least twice during the duration of the call. In one embodiment, a packet voice system includes an ATM Adaptation Layer Type 2 (AAL-2) and Service Specific Convergence Sublayer (SSCS) System. The receiver portion of the SSCS System recovers AAL-2 packets and plays back the compressed audio to a voice decoding element. In providing playback, the receiver applies the build-out delay at the start of each talk-spurt. The voice decoding element provides an uncompressed audio stream. In another embodiment, the receiver portion of the SSCS System applies the build-out delay at the start of the each talk-spurt as a function of the length of the previous silence interval.
摘要翻译：在分组语音系统中，在呼叫期间在接收机中的动态建立延迟方法。特别地，在呼叫期间，建立延迟至少应用两次。在一个实施例中，分组语音系统包括ATM适配层类型2（AAL-2）和服务特定会聚子层（SSCS）系统。 SSCS系统的接收器部分恢复AAL-2数据包，并将压缩音频回放到语音解码元素。在提供播放时，接收机将在每次通话突发开始时应用建立延迟。语音解码元件提供未压缩音频流。在另一个实施例中，SSCS系统的接收机部分根据先前的静默间隔的长度，在每个通话突发的开始处施加建立延迟。

5. 发明授权

US06219339B1 Method and apparatus for selectively discarding packets 失效
标题翻译：用于选择性地丢弃分组的方法和装置
公开(公告)号：US06219339B1
公开(公告)日：2001-04-17
申请号：US09026830
申请日：1998-02-20
申请人： Bharat Tarachand Doshi , Kotikalapudi Sriram , Yung-Terng Wang
发明人： Bharat Tarachand Doshi , Kotikalapudi Sriram , Yung-Terng Wang
IPC分类号： H04L1228
CPC分类号： H04L12/5602 , H04L47/32
摘要： In a packet voice system, discarding of a packet is performed as a function of previously discarded packets. In one embodiment, a packet voice system includes an ATM Adaptation Layer Type 2 (AAL2) and Service Specific Convergence Sublayer (SSCS) System. In this system, a transmission buffer stores AAL2 voice packets for transmission, each AAL2 voice packet comprising a sequence number, the values of which range from 0 to n−1, and a source identifier, k. When traffic congestion is detected, the transmitter portion of the SSCS System selectively discards one packet from a source k at the output of the transmission buffer if no packet from source k was dropped in either the last n−1 packets or over a predefined prior interval of time. Another embodiment of the invention discards packets at the input of the transmission buffer.
摘要翻译：在分组语音系统中，根据先前丢弃的分组，执行丢弃分组。在一个实施例中，分组语音系统包括ATM适配层类型2（AAL2）和业务特定会聚子层（SSCS）系统。在该系统中，发送缓冲器存储用于发送的AAL2语音分组，每个AAL2语音分组包括序列号，其值范围从0到n-1，源标识符k。当检测到交通拥堵时，如果在最后的n-1个分组中没有丢弃来自源k的分组，或者超过预定的先前间隔，则SSCS系统的发射机部分选择性地丢弃来自发射缓冲器输出端的源k的一个分组的时间。本发明的另一实施例在发送缓冲器的输入处丢弃分组。

6. 发明申请

US20130302033A1 Dynamic Assignment Of Wavelengths In Agile Photonic Networks 审中-公开
标题翻译：敏捷光子网络中波长的动态分配
公开(公告)号：US20130302033A1
公开(公告)日：2013-11-14
申请号：US13944401
申请日：2013-07-17
申请人： Kotikalapudi Sriram , Mukul Katiyar , Jonathan Titchener , Rajender Rao Nednur , Anthony Vernon Walker Smith
发明人： Kotikalapudi Sriram , Mukul Katiyar , Jonathan Titchener , Rajender Rao Nednur , Anthony Vernon Walker Smith
IPC分类号： H04Q11/00
CPC分类号： H04Q11/0005 , H04J14/0221 , H04J14/0246 , H04J14/0257 , H04J14/0267 , H04J14/0269 , H04J14/0283 , H04J14/0284
摘要： In an automatically switched optical network, the wavelengths are assigned to optical path based on their intrinsic physical performance and on the current network operating parameters. The wavelength performance information is organized in binning tables, based primarily on the wavelength reach capabilities. A network topology database provides the distance between the nodes of the network, which is used to determine the length of the optical path. Other network operating parameters needed for wavelength selection are also available in this database. Once a bin corresponding to the path length is identified in the binning table, the wavelength for that path is selected based on length only, or based on the length and one or more additional parameters. The optical path performance is estimated for the selected wavelength, and the search continues if the estimated path performance is not satisfactory. Several available wavelengths are searched and of those, the wavelength that is most used along the optical path in consideration or alternatively network-wide is selected and assigned. This method helps minimize wavelength fragmentation. The binning tables may have various granularities, and may be organized by reach, or by reach, wavelength spacing, the load on the respective optical path, the fiber type, etc.
摘要翻译：在自动切换光网络中，根据其固有物理性能和当前网络运行参数将波长分配给光路。波长性能信息主要基于波长到达能力组织在合并表中。网络拓扑数据库提供网络节点之间的距离，用于确定光路长度。波长选择所需的其他网络运行参数也可在此数据库中使用。一旦在分箱表中识别出对应于路径长度的仓，则该路径的波长仅基于长度，或者基于长度和一个或多个附加参数来选择。对于所选择的波长估计光路性能，如果估计的路径性能不令人满意，则搜索继续。搜索几种可用的波长，并且选择和分配在考虑中或最广泛的光路中最常使用的波长。该方法有助于最小化波长碎片。分箱表可以具有各种粒度，并且可以通过到达或到达波长间隔，各个光路上的负载，光纤类型等来组织。

7. 发明授权

US08521022B1 Dynamic assignment of wavelengths in agile photonic networks 有权
标题翻译：敏捷光子网络波长的动态分配
公开(公告)号：US08521022B1
公开(公告)日：2013-08-27
申请号：US10128092
申请日：2002-04-23
申请人： Kotikalapudi Sriram , Mukul Katiyar , Jonathan Titchener , Rajender Rao Nednur , Anthony Vernon Walker Smith
发明人： Kotikalapudi Sriram , Mukul Katiyar , Jonathan Titchener , Rajender Rao Nednur , Anthony Vernon Walker Smith
IPC分类号： H04J14/00
CPC分类号： H04Q11/0005 , H04J14/0221 , H04J14/0246 , H04J14/0257 , H04J14/0267 , H04J14/0269 , H04J14/0283 , H04J14/0284
摘要： In an automatically switched optical network, the wavelengths are assigned to optical path based on their intrinsic physical performance and on the current network operating parameters. The wavelength performance information is organized in binning tables, based primarily on the wavelength reach capabilities. A network topology database provides the distance between the nodes of the network, which is used to determine the length of the optical path. Other network operating parameters needed for wavelength selection are also available in this database. Once a bin corresponding to the path length is identified in the binning table, the wavelength for that path is selected based on length only, or based on the length and one or more additional parameters. The optical path performance is estimated for the selected wavelength, and the search continues if the estimated path performance is not satisfactory. Several available wavelengths are searched and of those, the wavelength that is most used along the optical path in consideration or alternatively network-wide is selected and assigned. This method helps minimize wavelength fragmentation. The binning tables may have various granularities, and may be organized by reach, or by reach, wavelength spacing, the load on the respective optical path, the fiber type, etc.
摘要翻译：在自动切换光网络中，根据其固有物理性能和当前网络运行参数将波长分配给光路。波长性能信息主要基于波长到达能力组织在合并表中。网络拓扑数据库提供网络节点之间的距离，用于确定光路长度。波长选择所需的其他网络运行参数也可在此数据库中使用。一旦在分箱表中识别出对应于路径长度的仓，则该路径的波长仅基于长度，或者基于长度和一个或多个附加参数来选择。对于所选择的波长估计光路性能，如果估计的路径性能不令人满意，则搜索继续。搜索几种可用的波长，并且选择和分配在考虑中或最广泛的光路中最常使用的波长。该方法有助于最小化波长碎片。分箱表可以具有各种粒度，并且可以通过到达或到达波长间隔，各个光路上的负载，光纤类型等来组织。

8. 发明授权

US07414968B1 Method for call admission on packet voice system statistical multiplexing and dynamic voice encoding 失效
标题翻译：分组语音系统统计复用和动态语音编码的呼叫准入方法
公开(公告)号：US07414968B1
公开(公告)日：2008-08-19
申请号：US09521730
申请日：2000-03-09
申请人： Kotikalapudi Sriram , Yung-Terng Wang
发明人： Kotikalapudi Sriram , Yung-Terng Wang
IPC分类号： H04L12/26
CPC分类号： H04Q11/0478 , H04L2012/5638 , H04L2012/5656 , H04L2012/6481
摘要： An AAL2/SSCS packet voice system multiplexes various forms of voice-band traffic including voice packets, fax packets, and data packets into a virtual circuit (VC). This AAL2/SSCS packet voice system executes a dynamic call admission algorithm that takes into account call type in deciding whether to admit a new call to the VC. In particular, this approach takes into account different bandwidth needs for different call types. The AAL2/SSCS packet voice system also performs bit or block dropping on voice packets to mitigate the effects of traffic congestion. The bit or block dropping is done based on the packet queue fill value exceeding at least one queue threshold. Further, the AAL2/SSCS packet voice system also dynamically varies a queue threshold as a function of capacity.
摘要翻译： AAL2 / SSCS分组语音系统将包括语音分组，传真分组和数据分组在内的各种语音频带业务复用到虚拟电路（VC）中。该AAL2 / SSCS分组语音系统执行动态呼叫准入算法，该算法在决定是否允许对VC的新呼叫时考虑呼叫类型。特别地，这种方法考虑到不同呼叫类型的不同带宽需求。 AAL2 / SSCS分组语音系统还对语音分组进行比特或阻塞，以减轻交通拥堵的影响。基于分组队列填充值超过至少一个队列阈值来完成比特或块丢弃。此外，AAL2 / SSCS分组语音系统还动态地改变作为容量的函数的队列阈值。

9. 发明授权

US06169738A Method for call admission in packet voice system using statistical multiplexing and dynamic voice encoding 失效
标题翻译：使用统计复用和动态语音编码的分组语音系统中的呼叫准入方法
公开(公告)号：US06169738A
公开(公告)日：2001-01-02
申请号：US08965515
申请日：1997-11-06
申请人： Kotikalapudi Sriram , Yung-Terng Wang
发明人： Kotikalapudi Sriram , Yung-Terng Wang
IPC分类号： H04L1228
CPC分类号： H04Q11/0478 , H04L2012/5638 , H04L2012/5656 , H04L2012/6481
摘要： An AAL2/SSCS packet voice system multiplexes various forms of voice-band traffic including voice packets, fax packets, and data packets into a virtual circuit (VC). This AAL2/SSCS packet voice system executes a dynamic call admission algorithm that takes into account call type in deciding whether to admit a new call to the VC. In particular, this approach takes into account different bandwidth needs for different call types. The AAL2/SSCS packet voice system also performs bit or block dropping on voice packets to mitigate the effects of traffic congestion. The bit or block dropping is done based on the packet queue fill value exceeding at least one queue threshold. Further, the AAL2/SSCS packet voice system also dynamically varies a queue threshold as a function of capacity.
摘要翻译： AAL2 / SSCS分组语音系统将包括语音分组，传真分组和数据分组在内的各种语音频带业务复用到虚拟电路（VC）中。该AAL2 / SSCS分组语音系统执行动态呼叫准入算法，该算法在决定是否允许对VC的新呼叫时考虑呼叫类型。特别地，这种方法考虑到不同呼叫类型的不同带宽需求。 AAL2 / SSCS分组语音系统还对语音分组进行比特或阻塞，以减轻交通拥堵的影响。基于分组队列填充值超过至少一个队列阈值来完成比特或块丢弃。此外，AAL2 / SSCS分组语音系统还动态地改变作为容量的函数的队列阈值。

10. 发明授权

US6075798A Extended header for use in ATM adaptation layer type 2 packets 失效
标题翻译：用于ATM适配层类型2数据包的扩展报头
公开(公告)号：US6075798A
公开(公告)日：2000-06-13
申请号：US880181
申请日：1997-06-20
申请人： Terry Gregory Lyons , Kotikalapudi Sriram
发明人： Terry Gregory Lyons , Kotikalapudi Sriram
IPC分类号： H04L12/56 , H04Q11/04 , H04J3/24
CPC分类号： H04Q11/0478 , H04L2012/5616 , H04L2012/5656 , H04L2012/5671
摘要： A packet voice system includes an ATM Adaptation Layer Type 2 (AAL-2) and Service Specific Convergence Sublayer (SSCS) System comprising a transmitter and a receiver. A portion of the 32 codepoints of the five bit RES (or UUI) field of the AAL-2 header are predefined to indicate an extended header. This a prior definition is stored in tables in both the transmitter and the receiver. The extended header itself comprises an additional octet appended to the AAL-2 header. A sequence number is normally carried in the RES field for the packet stream of voice calls that require sequence numbers. When the extended header is used, the sequence number is part of the extended header and thus messages are conveyed from the transmitter to the receiver without causing an interruption to sequence number assignment messages The transmitter dynamically uses the extended header and discontinues use of the extended header after a predefined duration of time or upon receiving an acknowledgment from the receiver.
摘要翻译：分组语音系统包括包括发射机和接收机的ATM适配层类型2（AAL-2）和业务特定会聚子层（SSCS）系统。 AAL-2头部的5位RES（或UUI）字段的32个代码点中的一部分被预先定义以指示扩展头。这个先前的定义存储在发射机和接收机中的表中。扩展报头本身包括附加到AAL-2报头的附加八位字节。序列号通常在需要序列号的语音呼叫的分组流的RES字段中携带。当使用扩展报头时，序列号是扩展报头的一部分，因此消息从发送器传送到接收器，而不会导致序列号分配消息的中断。发送器动态地使用扩展报头并停止使用扩展报头在预定义的持续时间之后或在从接收机接收到确认之后。

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