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    Signalling mechanisms in MIMO HARQ schemes for wireless communication systems
    2.
    发明公开
    Signalling mechanisms in MIMO HARQ schemes for wireless communication systems 有权
    MIMO HARQ模式中的信号传输机制

    公开(公告)号：EP1404048A1

    公开(公告)日：2004-03-31

    申请号：EP03255072.5

    申请日：2003-08-14

    Applicant: LUCENT TECHNOLOGIES INC.

    Inventor： Gopalakrishnan, Nandu ,  Liu, Jung-Tao ,  Rudrapatna, Ashok N. ,  Sharma, Naresh ,  Kogiantis, Achilles George

    IPC: H04L1/18 ,  H04B7/02

    CPC classification number: H04L1/1867 ,  H04B7/061 ,  H04L1/1816 ,  H04L2001/0092 ,  H04L2001/0096

    Abstract: A method for conveying signaling information of a communication system that uses MIMO antenna systems. To enable a relatively larger amount of information to be conveyed over the communication system and thus exploit the use of the MIMO antenna system, forward link signaling channels are provided where such channels contain swapping information that allow the communication system to retransmit traffic information using any one of the antenna elements of a MIMO system. The forward link signaling channels also contain channel assignment information that indicate which particular groups of channels are available for use by particular users of the communication system. To further accommodate for the relatively larger amount of information being conveyed over the communication system, the format of the reverse link signaling information is modified using any one or any combination of the following three mechanisms: (1) reverse signaling link information is time division multiplexed; (2) the reverse link information is modulated at relatively higher order modulation; (3) additional channels are provided for the reverse link information.

    Abstract translation: 该方法包括提供具有交换信令信息的前向链路信令信道格式，用于使用多输入多输出（MIMO）系统的天线组件（308,318）之一来重新发送业务信息。 提供了反向链路信令信道格式。 通过使用附加的沃尔什码来提供分配给CDMA通信系统的特定用户的附加通信信道。

    A method for encoding a user identifier in a communication system
    3.
    发明公开
    A method for encoding a user identifier in a communication system 有权
    一种用于在通信系统中编码的用户识别符的方法

    公开(公告)号：EP1357691A3

    公开(公告)日：2004-02-18

    申请号：EP03251636.1

    申请日：2003-03-18

    Applicant: LUCENT TECHNOLOGIES INC.

    Inventor： Gopalakrishnan, Nandu

    IPC: H04L1/00

    CPC classification number: H04L1/0061 ,  H04L1/0057 ,  H04L1/0072 ,  H04L1/1812

    Abstract: A method of generating coded user ID information that is combined with CRC codes and the result is appended to signaling information. The CRC codes are generated from the signaling information. The resulting codeword is transmitted over shared signaling channels to various users of a communication system. The resulting codeword is such that the likelihood of users attempting to decode codewords not intended for them is significantly reduced.

    Method and apparatus for link error prediction in a communication system
    5.
    发明公开
    Method and apparatus for link error prediction in a communication system 有权
    在einem社区系统中的Verfahren zur Verbindungsfehler-Vorhersage

    公开(公告)号：EP1564924A1

    公开(公告)日：2005-08-17

    申请号：EP05250507.0

    申请日：2005-01-31

    Applicant: Lucent Technologies Inc.

    Inventor： Ashikhmin, Alexei ,  De Lind van Wijngaar, Adriaan J. ,  Gopalakrishnan, Nandu ,  Kim, Jaehyeong ,  Soljanin, Emina

    IPC: H04L1/20 ,  H04L1/18

    CPC classification number: H04L1/1819 ,  H04L1/1845 ,  H04L1/20

    Abstract: A method is provided to accurately predict the probability of successfully recovering frames of (coded) information received over a wireless link, without having to decode the frame. This method, which consists of three steps, requires only limited information about the received signals and the forward error correction code and retransmission scheme being used. First, the signal to noise ratio (SNR) of each of the received signals is measured, where the average SNR is determined for multiple segments that together constitute the frame. Next, an algorithm is employed that takes these SNR values as inputs and determines the so-called effective SNR. The algorithm translates the measured SNR values using an appropriate convex metric, and subsequently combines the resulting values, thereby factoring in the effects of fading, multi-path, and other signal degradations. In the third stage, the effective SNR is used to determine the frame error rate by using a look-up table of a single reference curve that specifies the frame error rate of the actual error control code over an additive white Gaussian noise channel. This suffices to accurately predict the performance of a wide range of mobile communication channels. This method can be applied to a variety of retransmission strategies, including hybrid automatic-repeat request (ARQ) and incremental redundancy (IR) and combinations of these two strategies.

    Abstract translation: 提供了一种方法来准确地预测成功地恢复通过无线链路接收的（编码）信息的帧的概率，而不必对帧进行解码。 该方法由三个步骤组成，仅需要有关所接收的信号以及所使用的前向纠错码和重传方案的有限信息。 首先，测量每个接收信号的信噪比（SNR），其中对于一起构成帧的多个段确定平均SNR。 接下来，采用将这些SNR值作为输入并且确定所谓的有效SNR的算法。 该算法使用适当的凸度量翻译所测量的SNR值，并且随后组合所得到的值，从而考虑到衰落，多路径和其他信号劣化的影响。 在第三阶段，有效SNR用于通过使用单个参考曲线的查找表来确定帧错误率，该参考曲线通过加性白高斯噪声信道指定实际错误控制码的帧错误率。 这足以准确地预测各种移动通信信道的性能。 该方法可以应用于各种重传策略，包括混合自动重传请求（ARQ）和增量冗余（IR）以及这两种策略的组合。

    Method for transmitting signaling information over two channels
    7.
    发明公开
    Method for transmitting signaling information over two channels 有权
    在两个信道发送信令信息的方法

    公开(公告)号：EP1300978A1

    公开(公告)日：2003-04-09

    申请号：EP01309741.5

    申请日：2001-11-19

    Applicant: LUCENT TECHNOLOGIES INC.

    Inventor： Das, Arnab ,  Gopalakrishnan, Nandu ,  Khan, Farooq Ullah

    IPC: H04L5/02 ,  H04L25/03

    CPC classification number: H04L1/0071 ,  H04B2201/70701 ,  H04L1/0061 ,  H04L1/007 ,  H04L1/0072 ,  H04L25/03866

    Abstract: A method for reliably transmitting signaling information is provided. One type of signaling information is transmitted over a primary control channel. The signaling information that is to be transmitted over the primary control channel is defined as a set of particular information. Other signaling information are conveyed over a secondary control channel. Prior to transmission, the information to be conveyed over the secondary channel is scrambled in accordance with a particular scrambling procedure that indicates the information that is to be sent over the primary control channel. The scrambling is thus used to encode the information content of the primary control channel into the information of the secondary control channel thereby further protecting the integrity of the information being conveyed over both control channels.

    Integrating power-controlled and rate-controlled transmissions on a same frequency carrier
    8.
    发明公开
    Integrating power-controlled and rate-controlled transmissions on a same frequency carrier 有权
    Leistungs- und Datenratenregelung einerÜbertragungauf einerTrägerfrequenz

    公开(公告)号：EP1187370A1

    公开(公告)日：2002-03-13

    申请号：EP01302473.2

    申请日：2001-03-19

    Applicant: LUCENT TECHNOLOGIES INC.

    Inventor： Gopalakrishnan, Nandu ,  Joshi, Niranjan Sudhir ,  Kadaba, Srinivas ,  Kogiantis, Achilles George ,  Rudrapatna, Ashok N. ,  Sunay, Mehmet Oguz ,  Sundaram, Ganapathy Subramanian ,  Vitebsky, Stanley

    IPC: H04B7/26

    CPC classification number: H04W52/265 ,  H04B7/264 ,  H04W52/223 ,  H04W52/241 ,  H04W52/267 ,  H04W52/34 ,  H04W52/54

    Abstract: Disclosed is a method of integrating voice and data services onto a same frequency channel using available transmit power information to determine data rates, wherein the available transmit power information indicates an amount of transmit power available for future data transmissions over one or more data channels. In a "distributed" embodiment, a transmitter or base station transmits, via a forward link, an available power message to a receiver or mobile-telephone indicating an amount of available transmit power at some future time t+z . The mobile-telephone performs signal-to-interference measurements corresponding to the received forward link and received interference, and uses such signal-to-interference measurements and the available power message to determine a data rate that can be supported by the mobile-telephone. Preferably, the determined data rate corresponds to a maximum data rate at which a minimum level of quality of service can be achieved at the mobile-telephone. In a "centralized" embodiment, the mobile-telephone transmits the signal-to-interference measurements to the base station, and the base station determines the data rate based on the available transmit power at future time t+z .

    Abstract translation: 公开了一种使用可用的发射功率信息将语音和数据业务集成到相同频率信道上以确定数据速率的方法，其中可用发射功率信息指示可用于将来数据传输在一个或多个数据信道上的发射功率量。 在“分布式”实施例中，发射机或基站经由前向链路将可用的功率消息发射到接收机或移动电话，指示在某个未来时间t + z的可用发射功率的量。 移动电话执行对应于所接收的前向链路和接收到的干扰的信号到干扰测量，并且使用这样的信号对干扰测量和可用功率消息来确定移动电话可以支持的数据速率。 优选地，确定的数据速率对应于在移动电话处可以实现最低服务质量水平的最大数据速率。 在“集中”实施例中，移动电话将信号到干扰测量发送到基站，并且基站在未来时间t + z基于可用发射功率来确定数据速率。

    Method and apparatus for managing packet data resources
    9.
    发明公开
    Method and apparatus for managing packet data resources 审中-公开
    Verfahren und Vorrichtung zur Verwaltung von Paketdatenressourcen

    公开(公告)号：EP2028905A1

    公开(公告)日：2009-02-25

    申请号：EP08019202.4

    申请日：2006-01-11

    Applicant: LUCENT TECHNOLOGIES INC.

    Inventor： Gopalakrishnan, Nandu ,  Joshi, Niranjan Sudhir ,  Kadaba, Srinivas R. ,  Rudrapatna, Ashok N. ,  Sundaram, Ganapathy Subramanian

    IPC: H04W72/04 ,  H04W72/12

    CPC classification number: H04L1/1812 ,  H04L1/0007 ,  H04L1/0009 ,  H04L1/1887 ,  H04L47/14 ,  H04L47/24 ,  H04L47/30 ,  H04W28/06 ,  H04W72/10

    Abstract: A method for allocating transmission resources in a base station (22a,22b) comprising determining a largest supportable packet size for a highest priority user based at least partially on a combination of available modulation types, a total number of codes available for packet transmission, a total amount of available transmission power available for packet transmission, and frame durations supported by a base station, wherein
    the determination comprises:
    - determining the total amount of transmission power available for packet transmission;
    - determining the total number of codes available for packet transmission,
    - determining a channel rate based on a minimal number of codes needed to transmit the supportable packet size;
    identifying the highest priority user from a plurality of users by determining an ideal channel rate for each of the plurality of users;
    the method comprising:
    - identifying a second highest priority user;
    - allocating transmission power and codes to the second highest priority user, wherein the transmission power allocated to the second highest priority user does not exceed the total transmission power minus the transmission power allocated to the highest priority user and wherein the number of codes allocated to the second highest priority user do not exceed the total number of codes minus the codes allocated to the highest priority user.

    Abstract translation: 一种用于在基站（22a，22b）中分配传输资源的方法，包括至少部分地基于可用调制类型的组合，可用于分组传输的代码的总数，确定用于分组传输的代码的总数，确定用于最高优先级用户的最大可支持分组大小 可用于分组传输的可用传输功率的总量和由基站支持的帧持续时间，其中所述确定包括： - 确定可用于分组传输的传输功率的总量; - 确定可用于分组传输的代码的总数， - 基于发送所述可支持分组大小所需的最少代码数确定信道速率; 通过为所述多个用户中的每一个确定理想的信道速率来识别来自多个用户的最高优先权用户; 该方法包括： - 识别第二高优先级用户; - 向第二最高优先级用户分配传输功率和代码，其中分配给第二最高优先级用户的传输功率不超过总传输功率减去分配给最高优先级用户的传输功率，并且其中分配给 第二高优先级用户不超过代码总数减去分配给最高优先级用户的代码。

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