公开(公告)号：EP1597828A2

公开(公告)日：2005-11-23

申请号：EP04715077.6

申请日：2004-02-26

申请人： Flarion Technologies, INC.

发明人： RICHARDSON, Tom

IPC分类号： H03M13/27

CPC分类号： H03M13/116 ,  H03M13/1102 ,  H03M13/6356 ,  H03M13/6362

摘要： Methods and apparatus of the present invention can be used to implement a communications system wherein different devices using the same LDPC code can be implemented using different levels of parallelism. The use of a novel class of LDPC codes makes such differences in parallelism possible. Use of a factorable permuter (706) in various embodiments of the invention make LDPC devices with different levels of parallelism in the encoder and decoder relatively easy to implement when using codes in the class of LDPC codes discussed herein. The factorable permuter (706) may be implemented as a controllable multi-stage switching device which performs none, one, or multiple sequential reordering operations on a Z element vector passed between memory (702) and a Z element vector processor (710), with the switching of individual vectors being controlled (718) in accordance with the graph structure (720) of the code being implemented.

公开(公告)号：EP1595353A2

公开(公告)日：2005-11-16

申请号：EP04705282.4

申请日：2004-01-26

申请人： Flarion Technologies, INC.

发明人： O'NEILL, Alan ,  CORSON, Scott, M. ,  TSIRTSIS, George ,  PARK, Vincent

IPC分类号： H04L1/00

摘要： Methods and apparatus for storing, manipulating, retrieving, and forwarding state, e.g., context and other information, used to support communications sessions with one or more end nodes, e.g., mobile devices, are described. Various features are directed to a mobile node controlling the transfer of state from a first access node to a second access node during a handoff operation thereby eliminating any need for state transfer messages to be transmitted between the second access node and the first access node during handoff. Other features of the invention are directed to the use of a core network node to store state information. State information stored in the core node can be accessed and used by access nodes in cases where a mobile node does not send a state transfer message during a handoff, e.g., because communication with the first access node is lost or because such messages are not supported.

公开(公告)号：EP1206072B1

公开(公告)日：2005-06-29

申请号：EP01308987.5

申请日：2001-10-23

申请人： LUCENT TECHNOLOGIES INC. ,  Flarion Technologies, INC.

发明人： Laroia, Rajiv ,  Junyi, Li ,  Uppala, Sathyadev Venkata

IPC分类号： H04Q7/38

CPC分类号： H04L12/189 ,  H04W68/00 ,  H04W72/005

公开(公告)号：EP1483677A1

公开(公告)日：2004-12-08

申请号：EP03704086.2

申请日：2003-01-31

申请人： Flarion Technologies, INC.

发明人： O'NEILL, Alan

IPC分类号： G06F15/16 ,  H04L12/26

CPC分类号： H04L29/06027 ,  H04L29/06 ,  H04L65/1006 ,  H04L65/1043 ,  H04L65/1069 ,  H04L65/80

摘要： This application describes how Session Description Protocol (SDP) preconditions signaling can be enhanced to support lead role negotiation, precondition capability exchange, premature precondition attempts, and concatenated preconditions processing. The application describes the use of send and receive tags (1004) in an SDP message (1012) for a given media line. In a given message, a success or failure tag (1018) may be associated with a send or receive tag in addition to an optional or mandatory condition indicator tag. A lead role indicator may also be associated with a send or receive tag to indicate a desired preference with regard to the sender or receiver taking the lead role. These additions lead to a greater chance of successful session set-up completion, reduce the number of signaling exchanges in general, and enable precondition attempts to be started earlier and to be executed in parallel.

公开(公告)号：EP1421710A2

公开(公告)日：2004-05-26

申请号：EP02757155.3

申请日：2002-08-15

申请人： Flarion Technologies, INC.

发明人： O'NEILL, Alan

IPC分类号： H04B7/00

CPC分类号： H04W76/27 ,  H04L29/06027 ,  H04L65/1043 ,  H04W72/10 ,  H04W76/25 ,  H04W76/36

摘要： This invention describes how combined session and resource tracking in a mobile node (MN) and/or basestation in a dynamic network resource environment can be used to control reactions to resource shortages. The session that is to experience a resource shortage is detected either by the MN, or communicated to the MN where session signaling is used to modify the session according to MN and basestation policy/configuration. The basestation can alternatively modify the session itself with all the session peers, on behalf of the MN. The specific new reaction to resource shortages that is then enabled is to place the session on hold such that the resources are freed, but so that the session state is maintained in the peers. This is preferable to dropping the session, as is generally the case in dynamic environments, if the likely period of resource loss is short and the session modifications require less overhead than restarting the session when the resources return after dropping the session. In addition, before having resources removed, the basestation can provide the MN with an opportunity to upgrade the priority of its resource request compared to other users in the cell, so that a resource auction is conducted to decide which MN actually loses its resources.

摘要翻译： 本发明描述了如何可以使用移动节点（MN）中的组合会话和资源跟踪和/或动态网络资源环境中的基站来控制对资源短缺的反应。 遇到资源短缺的会话由MN检测，或者通过MN传送给MN，根据MN和基站策略/配置，会话信令用于修改会话。 基站可以代替MN修改与所有会话对等体的会话本身。 然后启用对资源短缺的具体新反应是将会话置于保持状态，以便资源被释放，但是会话状态保持在对等体中。 如果资源丢失的可能周期短，并且会话修改需要较少的开销，则在删除会话后资源返回时重新启动会话，这比删除会话更为可取。 此外，在删除资源之前，基站可以向MN提供与小区中的其他用户相比资源请求的优先级升级的机会，从而进行资源拍卖以决定哪个MN实际上丢失其资源。

公开(公告)号：EP1330880A2

公开(公告)日：2003-07-30

申请号：EP01970767.8

申请日：2001-09-12

申请人： Flarion Technologies, INC.

发明人： VISWANATH, Pramod,127 Coordinated Sciences Lab ,  LAROIA, Rajiv ,  TSE, David, N., C.

IPC分类号： H04B1/00

CPC分类号： H04W72/1231 ,  H04B7/0671 ,  H04B7/0682 ,  H04B17/24 ,  H04L1/0026 ,  H04W28/22 ,  H04W52/267 ,  H04W52/42 ,  H04W72/1278

摘要： Methods and apparatus for scheduling mobile stations (MSs) to download data and/or to control the rate of downloading to an MS from a base station (BS) as a function of downlink channel condition information are described. Artificial channel variations, which can be measured at the MS, and feedback to a BS for scheduling purposes, are introduced through the use of two or more transmitter antennas at a BS. Each of the antennas transmits a signal at the same frequency having the same information content, e.g., modulated data. However the signals are mode to differ with time in their phase and/or amplitude. Multiple signals having the same transmission frequency and information content are received and interpreted as a single composite signal by a receiving MS. The interaction of the received signals and the intentional variations introduced into the signals result an MS detecting different signal amplitudes and/or phases over time even when the total amount of power used to transmit the combination of the signals having the same information content remains constant with time. Data transmission rates are controlled in some embodiments as a function of channel conditions, e.g., the better the channel conditions the faster the transmission data rate used. By varying the data rate as a function of channel conditions and by preferring MSs with good channel conditions to those with bad channel conditions, improved overall throughput can be achieved by a BS with regard to downlinks as compared to known systems.

公开(公告)号：EP1317813A2

公开(公告)日：2003-06-11

申请号：EP01968770.6

申请日：2001-09-11

申请人： Flarion Technologies, INC.

发明人： LAROIA, Rajiv ,  LI, Junyi

IPC分类号： H04L5/06

CPC分类号： H04L27/2626 ,  H04L5/0012 ,  H04L5/0039 ,  H04L5/0041 ,  H04L5/0048 ,  H04L5/023 ,  H04L27/2602 ,  H04L27/2605 ,  H04L27/2614 ,  H04L27/2643 ,  H04L27/2647

摘要： FDM signal communication methods and apparatus are described. In accordance with the invention FDM signals are generated in the time domain with symbols being mapped to specific point in time. Training symbols may be included in the transmitted FDM signal to facilitate symbol recovery. An exemplary receiver receives the FDM signal from the communications channel, converts it into the frequency domain, and then filters it in the frequency domain to eliminate tones corresponding to other users. The filtered signal free of MAC interference is then converted into the time domain where channel estimation and compensation operations are performed. After channel compensation symbol recovery is performed in the time domain.