公开(公告)号：US07206286B2

公开(公告)日：2007-04-17

申请号：US10202271

申请日：2002-07-24

申请人： Santosh P Abraham ,  Ching-Roung Chou ,  Mooi Choo Chuah ,  Philip Charles Sapiano ,  Steven E. Sommars

发明人： Santosh P Abraham ,  Ching-Roung Chou ,  Mooi Choo Chuah ,  Philip Charles Sapiano ,  Steven E. Sommars

IPC分类号： H04J1/16

CPC分类号： H04W36/26

摘要： In a UMTS network, each packet data service user requires a dedicated channel (DCH) to transmit at high data rates. However, the number of DCHs available is small due to code and power limitations. Thus many users will have to be allocated the same DCH on a time sharing basis. Such sharing will not impact the quality of service for users whose applications are not delay sensitive and whose traffic generation pattern toggles between transmit and idle states. Such applications include web browsing, FTP sessions and E-mail. The present invention discloses four algorithms that can be used to dynamically allocate DCH channels to a contending user based on the user's need according to its traffic generation. One embodiment of the invention discloses a methodology of allocating user channels for packet data services in a wireless communications network, a first type channel having a given data rate and a second type channel having a lower data rate, including the steps of determining an estimated bandwidth requirement for the packet data services, switching a user to the second channel type from said first channel type if said estimated bandwidth requirement is below a first threshold, and switching a user to the first channel type from said second channel type if the estimated bandwidth requirement is greater than a second threshold. Another embodiment discloses methodology of allocating user channels for packet data services in a wireless communications network, a first type channel having a given data rate and a second type channel having a lower data rate, comprising the steps of providing an inactivity timer per user, and switching from the first channel type to said second channel type depending on a state of said inactivity timer.

摘要翻译： 在UMTS网络中，每个分组数据业务用户需要专用信道（DCH）以高数据速率进行发送。 然而，由于代码和功率限制，DCH的数量很少。 因此，许多用户将必须在时间分配的基础上分配相同的DCH。 这种共享不会影响其应用不延迟敏感并且其业务生成模式在发送和空闲状态之间切换的用户的服务质量。 这样的应用程序包括网页浏览，FTP会话和电子邮件。 本发明公开了四种算法，可以根据用户的流量生成，根据用户需要，动态地向竞争用户分配DCH信道。 本发明的一个实施例公开了一种在无线通信网络中分配用户信道用于分组数据业务的方法，具有给定数据速率的第一类型信道和具有较低数据速率的第二类型信道，包括以下步骤：确定估计带宽 对于分组数据业务的要求，如果所述估计的带宽要求低于第一阈值，则从所述第一信道类型切换用户到第二信道类型，并且如果估计的带宽需求，则将用户切换到来自所述第二信道类型的第一信道类型 大于第二阈值。 另一实施例公开了在无线通信网络中分配用户信道用于分组数据业务的方法，具有给定数据速率的第一类型信道和具有较低数据速率的第二类型信道，包括以下步骤：为每个用户提供不活动定时器，以及 根据所述不活动定时器的状态，从第一通道类型切换到所述第二通道类型。

公开(公告)号：US07283502B1

公开(公告)日：2007-10-16

申请号：US09666809

申请日：2000-09-21

申请人： Santosh P Abraham ,  Mooi Choo Chuah ,  Kameswara Rao Medapalli ,  Ashwin Sampath

发明人： Santosh P Abraham ,  Mooi Choo Chuah ,  Kameswara Rao Medapalli ,  Ashwin Sampath

IPC分类号： H04L12/56 ,  H04L29/06

CPC分类号： H04W72/0406 ,  H04L47/10 ,  H04L47/2433 ,  H04L47/2491 ,  H04L69/16 ,  H04L69/161 ,  H04L69/324 ,  H04W72/087 ,  H04W92/12

摘要： In a UMTS (universal mobile telecommunications system) Terrestrial Radio Access Network (UTRAN) based wireless system, a wireless network element (e.g., a base station) exchanges information with another wireless network element (e.g., a radio network controller) via data frames (uplink or downlink). Each data frame comprising a header portion and a payload portion, which comprises a QoS class indicator field. Illustratively, the eight bit spare extension field of a UTRAN data frame (uplink or downlink) is used to convey a four bit payload type indicator and a four bit QoS class indicator.

摘要翻译： 在基于陆地无线电接入网（UMTS）的UMTS（通用移动电信系统）无线系统中，无线网元（例如，基站）经由数据帧（例如，无线网络控制器）与另一无线网元 上行链路或下行链路）。 每个数据帧包括报头部分和有效载荷部分，其包括QoS类指示符字段。 说明性地，UTRAN数据帧（上行链路或下行链路）的八位备用扩展字段用于传送四位有效载荷类型指示符和四位QoS类别指示符。

公开(公告)号：US07388838B2

公开(公告)日：2008-06-17

申请号：US10652277

申请日：2003-08-29

申请人： Santosh P Abraham ,  Mooi Choo Chuah ,  Tao Liu

发明人： Santosh P Abraham ,  Mooi Choo Chuah ,  Tao Liu

IPC分类号： H04L12/26

CPC分类号： H04W28/24 ,  H04W72/1247

摘要： An advance over the prior art is achieved through an efficient method for an admission control algorithm and a scheduling mechanism that complement each other in providing the following three classes of service. A first class of service is termed Class 1 where users specify a nominal amount of bandwidth desired. A second, lower tier service class is termed Class 2, wherein users specify a nominal and minimum amount of bandwidth desired when entering into a network connection. A third server class is Class 3, where Class 3 users are treated as best effort users. For Class 1 users the methodology of the present invention provides a guaranteed nominal amount of bandwidth. The admission control procedure ensures that Class 1 users are admitted only if resources exist to satisfy the nominal bandwidth requirements of the Class 1 users. Class 2 users are admitted if resources exist to satisfy the minimum bandwidth requirements of the user. Class 2 users are served with a bandwidth of up to their nominal bandwidths if there is capacity left after serving the Class 1 users with their nominal capacities. Class 3 users are served only if the Class 2 users have received their nominal bandwidths.

摘要翻译： 通过用于准入控制算法和调度机制的有效方法来实现现有技术的进步，所述准入控制算法和调度机制在提供以下三类服务时相互补充。 第一类服务被称为1类，用户指定所需的额定带宽量。 第二个较低级别的服务类称为2类，其中用户在进入网络连接时指定所需的标称和最小带宽量。 第三个服务器类是Class 3，其中Class 3用户被视为尽力而为的用户。 对于1类用户，本发明的方法提供了有保证的标称带宽量。 接纳控制程序确保只有在存在资源以满足1类用户的标称带宽要求的情况下才允许1类用户。 如果存在资源以满足用户的最低带宽要求，则允许2类用户使用。 如果在服务具有标称容量的Class 1用户之后剩余容量，则Class 2用户的带宽可达到其标称带宽。 仅当Class 2用户已经收到其标称带宽时才能使用3级用户。

公开(公告)号：US07031254B2

公开(公告)日：2006-04-18

申请号：US10057449

申请日：2002-01-25

申请人： Santosh P Abraham ,  Mooi Choo Chuah ,  Ashwin Sampath ,  Cem Uygur Saraydar

发明人： Santosh P Abraham ,  Mooi Choo Chuah ,  Ashwin Sampath ,  Cem Uygur Saraydar

IPC分类号： H04L12/26

CPC分类号： H04W28/22 ,  H04W28/10 ,  H04W92/14

摘要： A rate control system is provided for a link between a first node, such as an RNC and a second node, such as a Node B, within a wireless communications system where at least one user is provided a rate over the link as a function of link load. For example, the rate control system sets at least one user to a reduced rate on the link as a function of the rates of a plurality of users on the link. In certain embodiments, the rate control system controls the rate by selecting the size of a transport format block used to transport data for a user over the link during a transmission interval. The size of the transport format block can be selected by changing the number of transport blocks used to form the transport format block as a function of the total user data to be transported over the link at that time. The rate of data offered to the link can be controlled by the way user data is mapped into the transport format blocks used to send user data over the link. In a current UMTS systems, as long as the data present in a particular RLC buffer exceeds the size of the largest TFB, the largest TFB is used to pass the data to the next layer. With the rate control system, the size of the TFB for a particular user is determined based on the current status of all the RLC buffers that have data to transmit. If there is more data than the Iub link can carry at that point in time, then smaller TFBs are used for some of the users such that the aggregate traffic offered remains below the sustainable rate.

公开(公告)号：US07298716B2

公开(公告)日：2007-11-20

申请号：US10702748

申请日：2003-11-06

申请人： Santosh P. Abraham ,  Mooi Choo Chuah

发明人： Santosh P. Abraham ,  Mooi Choo Chuah

IPC分类号： H04B7/212

CPC分类号： H04W52/0232 ,  H04W84/18 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/22

摘要： A clustering based load adaptive sleeping protocol for ad hoc networks includes a plurality of nodes forming a cluster, where the nodes in the cluster are partitioned into n groups. This partitioning is performed based on the node ID (e.g. node_id modulo n). The cluster head transmits a beacon at fixed intervals. The beacon interval is divided into N slots, where N is a multiple of n. Node sleep/activation times are synchronized to the beacon interval slots. The node's group number is used to determine the slots within a beacon interval that a node begins it s sleep cycle. Therefore, no additional signaling is required between nodes to indicate sleep patterns. The sleeping time of each node may be increased when extended periods of inactivity are detected according to an adaptive procedure.

摘要翻译： 用于自组织网络的基于聚类的负载自适应睡眠协议包括形成集群的多个节点，其中集群中的节点被划分为n个组。 该分区基于节点ID（例如，node_id模n）来执行。 簇头以固定的间隔发送信标。 信标间隔被分为N个时隙，其中N是n的倍数。 节点睡眠/激活时间与信标间隔时隙同步。 节点的组号用于确定节点开始睡眠周期的信标间隔内的时隙。 因此，节点之间不需要额外的信号来指示睡眠模式。 根据自适应程序检测到延长的不活动时间段时，每个节点的休眠时间可能会增加。

公开(公告)号：US06980533B1

公开(公告)日：2005-12-27

申请号：US09650058

申请日：2000-08-29

申请人： Santosh P Abraham ,  Mooi Choo Chuah

发明人： Santosh P Abraham ,  Mooi Choo Chuah

IPC分类号： H04B7/212 ,  H04J3/16 ,  H04J3/22 ,  H04L12/56 ,  H04W24/00 ,  H04W28/10 ,  H04W72/12 ,  H04W74/00 ,  H04W88/08 ,  H04Q7/00

CPC分类号： H04W72/1257 ,  H04W28/10 ,  H04W72/1263

摘要： In a wireless internet access system, an access point of a base station and a group of wireless modems communicate over a wireless channel. This wireless channel comprises a sequence of “dwells,” where each dwell represents a period of time, e.g., 20 milli-seconds (ms). Each dwell can convey both uplink (or upstream) and downlink (or downstream) transmissions to, and from, the group of wireless modems. However, in each dwell a particular wireless modem can only communicate half-duplex—either provide an uplink transmission to the access point, or receive a downlink transmission from the access point. The access point load balances, or distributes, the downlink transmissions to the group of wireless modems across the dwells upon detection that some dwells convey more downlink transmissions than other dwells.

摘要翻译： 在无线因特网接入系统中，基站的接入点和一组无线调制解调器通过无线信道进行通信。 该无线信道包括一系列“停留”，其中每个驻留表示一段时间，例如20毫秒（ms）。 每个驻留可以向无线调制解调器组和从该组无线调制解调器传送上行链路（或上行）和下行链路（或下游）传输。 然而，在每个驻留中，特定的无线调制解调器只能进行半双工通信，或者向接入点提供上行链路传输，或从接入点接收下行链路传输。 在检测到一些住宅传送比其他住宅更多的下行链路传输时，接入点负载平衡或分布到整个住宅中的无线调制解调器组的下行链路传输。

公开(公告)号：US07085273B1

公开(公告)日：2006-08-01

申请号：US09349571

申请日：1999-07-08

申请人： Mooi Choo Chuah

发明人： Mooi Choo Chuah

IPC分类号： H04L1/18

CPC分类号： H04L1/1877 ,  H04L1/187 ,  H04L12/4633 ,  H04L2001/0098

摘要： A Layer 2 Tunneling Protocol (L2TP) performs a sender initiated recovery algorithm (SIRA) upon receiving, from an L2TP receiver, a predefined number of packets including the same “next received” (Nr) sequence number. The L2TP sender transmits a payload message that includes the “Reset Sr” (R-bit) indicator, which resets the value for Nr (at the receiver) to either just beyond the first missing packet or to the current send sequence number of the sender.

摘要翻译： 第二层隧道协议（L2TP）在从L2TP接收机接收包括相同“下一个接收”（Nr）序列号的预定数量的分组时执行发送方发起的恢复算法（SIRA）。 L2TP发送方发送一个包含“复位Sr”（R-bit）指示符的有效负载消息，该指示器将Nr（在接收器）的值重置为超出第一个丢失数据包或发送方的当前发送序列号 。

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：US06654808B1

公开(公告)日：2003-11-25

申请号：US09285817

申请日：1999-04-02

申请人： Mooi Choo Chuah

发明人： Mooi Choo Chuah

IPC分类号： G06F1516

CPC分类号： H04L69/16 ,  H04L12/2856 ,  H04L12/2859 ,  H04L12/4633 ,  H04L47/2408 ,  H04L69/168 ,  H04W28/24 ,  H04W76/10 ,  H04W80/04

摘要： New Attribute Value Pairs (AVP)s are defined for use in the L2TP control messages for setting up a call. In particular, an L2TP Incoming-Call-Request (ICRQ) or Outgoing-Call-Request (OCRQ) message includes a QoS_Request AVP, which includes a field for defining the number of classes of service within the call. In another embodiment, a new QoS_Request extension and a new QoS_Reply extension are defined for use in Mobile IP networks.

摘要翻译： 新的属性值对（AVP）被定义为用于设置呼叫的L2TP控制消息。 特别地，L2TP进入呼叫请求（ICRQ）或出局呼叫请求（OCRQ）消息包括QoS_Request AVP，其包括用于定义呼叫中的服务等级数量的字段。 在另一个实施例中，新的QoS_Request扩展和新的QoS_Reply扩展被定义为用于移动IP网络。

公开(公告)号：US06327254B1

公开(公告)日：2001-12-04

申请号：US09083675

申请日：1998-05-22

申请人： Mooi Choo Chuah

发明人： Mooi Choo Chuah

IPC分类号： H04J316

CPC分类号： H04W72/1257 ,  H04L43/00 ,  H04L43/0829 ,  H04L43/16 ,  H04L47/10 ,  H04L47/14 ,  H04L47/26 ,  H04L47/286 ,  H04L47/30 ,  H04L47/32 ,  H04W28/14 ,  H04W52/10 ,  H04W52/50 ,  H04W72/1278 ,  H04W88/08

摘要： A method for data transmission in a wireless communication network utilizes an on-demand multiple access method with a fair queuing service discipline for efficient utilization of the limited bandwidth available in the network by sharing bandwidth among the remote hosts. In one embodiment, the base station broadcasts the system virtual time and the assigned shares of service classes to each of the wireless remotes. Each remote host computes its own service tag and reports it to the base station, which assigns transmit permits based on the service tag values and the available data slots. If a packet is lost or in error, the sending remote recomputes the service tag values of all its queued packets, including the packet whose transmission failed. Alternatively, the remote informs the base station of its queue size and the base station computes service tags for each remote based on the service shares of the remote and the available data slots. If a packet is lost or in error, the base station recomputes the service tag values for that remote host based on the current system virtual time. In an alternate embodiment, the AP or wireless node maintains a packet queue and a head-of-line tag. If a packet is lost, only the head-of-line tag needs to be changed. Once the head-of-line packet has been transmitted successfully, the rest of the queued packets will automatically receive the correct tag, the recomputed head-of-line tag plus appropriate increments. For half-duplex, both the uplink and downlink queues at the access points are managed as if there is only one system virtual time. For full-duplex, separate system virtual times for the uplink and the downlink traffic may be used. Remotes may also be divided into one or more separate groups, with each group having a different priority and receiving a different system virtual time. Service tags of all other remotes remain unaffected by the retransmission of a packet from any particular remote, meaning that the QoS experienced by the other remotes does not suffer.