公开(公告)号：US09379842B2

公开(公告)日：2016-06-28

申请号：US14067449

申请日：2013-10-30

Applicant: Telefonaktiebolaget L M Ericsson (publ)

Inventor： Xixian Chen ,  Hong Ren ,  Edward Mah ,  Shiguang Guo ,  Ping Yu ,  Guoqiang Lu

IPC: H04L1/00 ,  H04L1/18

CPC classification number: H04L1/0013 ,  H04L1/002 ,  H04L1/0033 ,  H04L1/1893

Abstract: A method and base station for adjusting outer-loop adjustment values used for link adaptation in a wireless communication network is provided. A modulation of a user equipment is determined and a success or failure of a Transport Block (TB) based on a TB feedback message is determined. Based on the TB feedback, one of an acknowledgement counter and a non-acknowledgement counter is incremented corresponding to the determined modulation. An upward step size for the determined modulation is updated based on the respective acknowledgement counter and the non-acknowledgement counter to affect link adaption.

Abstract translation: 提供了一种用于在无线通信网络中调整用于链路自适应的外环调整值的方法和基站。 确定用户设备的调制，并且确定基于TB反馈消息的传输块（TB）的成功或失败。 基于TB反馈，确认计数器和非确认计数器之一对应于所确定的调制而递增。 基于相应的确认计数器和非确认计数器来更新所确定的调制的向上步长以影响链路适应。

公开(公告)号：US09294355B2

公开(公告)日：2016-03-22

申请号：US14273681

申请日：2014-05-09

Applicant: Cisco Technology, Inc.

Inventor： William Frank Edwards ,  Keith Frank Tharp ,  Ken Naumann ,  Amrik Bains ,  Clark Carty ,  Alan Yee ,  Arvind Kansal ,  Samir Bouadjel

IPC: H04B3/00 ,  H04L25/00 ,  H04L12/24 ,  H04L12/10 ,  G06F13/40 ,  H04L1/00 ,  H04L5/14 ,  H04L12/40 ,  H04L12/931 ,  H04L29/08 ,  H04L12/935

CPC classification number: H04L41/083 ,  G06F13/40 ,  H04L1/002 ,  H04L5/1446 ,  H04L12/10 ,  H04L12/4013 ,  H04L49/3054 ,  H04L49/40 ,  H04L69/323

Abstract: Adjustable data rate data communications may be provided. First, a plurality of remote data rates at which a remote device is configured to operate may be received. Then, a plurality of local data rates at which a local device is configured to operate may be received. A greatest one of the plurality of local data rates may comprise a cable data rate comprising a greatest rate supported by a length of cable connecting the local device and the remote device. Next, an operating data rate may be determined. The operating data rate may comprise a highest one of the plurality of local data rates that has a corresponding equivalent within the plurality of remote data rates. The local device may then be operated at the operating data rate.

Abstract translation: 可以提供可调整的数据速率数据通信。 首先，可以接收远程设备被配置为操作的多个远程数据速率。 然后，可以接收本地设备被配置为操作的多个本地数据速率。 多个本地数据速率中最大的一个可以包括由连接本地设备和远程设备的电缆长度支持的最大速率的电缆数据速率。 接下来，可以确定操作数据速率。 操作数据速率可以包括在多个远程数据速率内具有对应等效的多个本地数据速率中的最高一个。 然后可以以操作数据速率操作本地设备。

公开(公告)号：US08615033B2

公开(公告)日：2013-12-24

申请号：US12346476

申请日：2008-12-30

Applicant: Jan Boer ,  Bas Driesen ,  Ra'anan Gil ,  Kai Roland Kriedte

Inventor： Jan Boer ,  Bas Driesen ,  Ra'anan Gil ,  Kai Roland Kriedte

IPC: H04B1/38

CPC classification number: H04L1/002 ,  H04L1/0002 ,  H04L1/206 ,  Y02D50/10

Abstract: A method for controlling a transmission rate of at least one transceiver, the transceiver including a transmitter and a receiver, includes: determining a signal quality characteristic corresponding to a signal received at the receiver by measuring a difference between one or more reference constellation points and one or more received constellation points, and modifying a transmission rate of the transmitter over a wireless communication channel as a function of the signal quality characteristic. The step of modifying the transmission rate over the wireless communication channel includes: determining lower and upper threshold levels representing reference minimum and maximum signal quality characteristics, respectively, corresponding to the transmission rate; maintaining the transmission rate when the measured signal quality characteristic is between the lower and upper threshold levels; and increasing the transmission rate when the signal quality characteristic is less than one or more lower threshold levels associated with one or more corresponding higher transmission rates.

Abstract translation: 一种用于控制至少一个收发器的传输速率的方法，所述收发器包括发射机和接收机，包括：通过测量一个或多个参考星座点与一个参考星座点之间的差异来确定与在接收机处接收到的信号相对应的信号质量特性 或更多的接收到的星座点，以及作为信号质量特性的函数，通过无线通信信道修改发射机的传输速率。 通过无线通信信道修改传输速率的步骤包括：分别对应于传输速率确定代表参考最小和最大信号质量特性的较低和较高阈值电平; 当测量的信号质量特性在下限阈值和上限阈值之间时，保持传输速率; 以及当信号质量特性小于与一个或多个相应较高传输速率相关联的一个或多个下限阈值时，增加传输速率。

公开(公告)号：US08381047B2

公开(公告)日：2013-02-19

申请号：US11290144

申请日：2005-11-30

Applicant: Amer A. Hassan ,  Deyun Wu ,  Christian Huitema ,  Vishesh M. Parikh

Inventor： Amer A. Hassan ,  Deyun Wu ,  Christian Huitema ,  Vishesh M. Parikh

IPC: G06F11/00 ,  G01R31/28 ,  H03M13/00

CPC classification number: G06F11/076 ,  G06F11/079 ,  H04L1/0009 ,  H04L1/002 ,  H04L1/20 ,  H04L43/50

Abstract: Methods and apparatus are disclosed for using error detection techniques, such as Forward Error Correction techniques, to predict the degradation below a certain threshold of an ability to accurately convey information on a communication channel, for example, to predict a failure of the communication channel. In response, transmission and/or reception of information on the channel may be adapted, for example, to prevent the degradation below the threshold, e.g., prevent channel failure. Predicting the degradation may be based, at least in part, on data transmission error information corresponding to one or more blocks of information received on the channel and may include determining an error rate pattern over time. Based on these determinations, the degradation below the threshold may be predicted and the transmission and/or reception adapted. Adapting may include initiating use of a different error encoding scheme and/or using an additional communication channel to convey information.

Abstract translation: 公开了使用错误检测技术（例如前向纠错技术）的方法和装置来预测在通信信道上准确地传送信息的能力的某一阈​​值以下的劣化，例如预测通信信道的故障。 作为响应，信道上的信息的传输和/或接收可以适应于例如防止劣化到阈值以下，例如防止信道故障。 可以至少部分地基于与信道上接收的一个或多个信息块相对应的数据传输错误信息来预测劣化，并且可以包括随时间确定错误率模式。 基于这些确定，可以预测低于阈值的劣化，并且传输和/或接收适应。 适应可以包括启动使用不同的错误编码方案和/或使用附加通信信道来传达信息。

公开(公告)号：US08019018B2

公开(公告)日：2011-09-13

申请号：US11548763

申请日：2006-10-12

Applicant: Daniel R. Cormier ,  Peter Do ,  Alan V. Ly

Inventor： Daniel R. Cormier ,  Peter Do ,  Alan V. Ly

IPC: H03K9/00

CPC classification number: H04L1/002 ,  H04L1/0003 ,  H04L1/0025 ,  H04L1/20

Abstract: In one aspect, the invention is a method that includes transferring data at an initial mode from a transmitter to a receiver, determining a suggested mode based on the data transferred and determining a count of the data transferred from the transmitter to the receiver. The method also includes transferring the suggested mode and the count to the transmitter and determining a pending mode based on the suggested mode and the count.

Abstract translation: 一方面，本发明是一种方法，其包括以初始模式将数据从发射机传送到接收机，基于所传输的数据确定建议的模式，并确定从发射机传送到接收机的数据的计数。 该方法还包括将建议的模式和计数传送到发射机，并根据建议的模式和计数确定待机模式。

公开(公告)号：US07876725B2

公开(公告)日：2011-01-25

申请号：US12272991

申请日：2008-11-18

Applicant: Steve Fantaske

Inventor： Steve Fantaske

IPC: H04W4/00 ,  H04J3/24 ,  H04L12/56

CPC classification number: H04L1/0019 ,  H04L1/0002 ,  H04L1/0018 ,  H04L1/002 ,  H04L1/1607 ,  H04L1/1803 ,  H04L1/188 ,  H04L1/1887 ,  H04L12/4604 ,  H04L67/14 ,  H04L67/146 ,  H04L69/08 ,  H04L69/16 ,  H04L69/161 ,  H04L69/163 ,  H04L69/32 ,  H04L69/326 ,  H04W28/22 ,  H04W80/04 ,  H04W80/06

Abstract: A network controller for facilitating roaming of a mobile wireless communications device between access points communicates with at least one access point over a wired network which, in turn, communicate with a mobile wireless communications device over a wireless network. The network controller includes a data processing system including a protocol stack that facilitates a communication session between the mobile device and a network device on the wired network, and a session table identifying session information for each said communication session. The session information identifies the current access point with which the mobile device is currently associated. The protocol stack updates the session table from session information received from the current access point, maintains a first virtual circuit with the network device, maintains a second virtual circuit with the current access point, and bridges communication between the virtual circuits in accordance with the session information.

Abstract translation: 用于促进移动无线通信设备在接入点之间的漫游的网络控制器通过有线网络与至少一个接入点进行通信，而有线网络又通过无线网络与移动无线通信设备进行通信。 该网络控制器包括数据处理系统，该数据处理系统包括促进移动设备与有线网络上的网络设备之间的通信会话的协议栈，以及识别每个所述通信会话的会话信息的会话表。 会话信息标识移动设备当前与之相关联的当前接入点。 协议栈从当前接入点接收到的会话信息更新会话表，与网络设备维护第一虚拟电路，用当前接入点维护第二虚拟电路，并根据会话桥接虚拟电路之间的通信 信息。

公开(公告)号：US07876697B2

公开(公告)日：2011-01-25

申请号：US11613823

申请日：2006-12-20

Applicant: Robert J. Thompson ,  Michael J. Cooper ,  Charles S. Moore ,  John L. Moran, III

Inventor： Robert J. Thompson ,  Michael J. Cooper ,  Charles S. Moore ,  John L. Moran, III

IPC: H04L12/26

CPC classification number: H04B10/0775 ,  H04B10/079 ,  H04L1/0003 ,  H04L1/002

Abstract: The available modulation schemes of a network are analyzed to determine which ones contain excessive phase noise or narrowband interference. A network element is selected and assigned to a test channel at a first modulation scheme at a predetermined power level to achieve a predetermined PER. The network element transmits a test signal and the network controller measures the signal to noise ratio (SNR) in the received test signal. If the SNR is not within a predetermined tolerance range of an estimated SNR for the modulation scheme at the predetermined PER, the modulation scheme is determined to have excessive phase noise or narrowband interference. Each available modulation scheme is tested by instructing the network element to transmit the test signal using each modulation scheme and assigning the power level of each modulation scheme. The suitable modulation schemes may be determined.

Abstract translation: 分析网络的可用调制方案以确定哪些包含过多的相位噪声或窄带干扰。 以预定功率电平选择并以第一调制方案将测试信道分配给测试信道以实现预定的PER。 网络元件发送测试信号，网络控制器测量接收到的测试信号中的信噪比（SNR）。 如果SNR在预定的PER下不在调制方案的估计SNR的预定公差范围内，则调制方案被确定为具有过大的相位噪声或窄带干扰。 每个可用的调制方案通过指示网络单元使用每个调制方案发送测试信号并分配每个调制方案的功率电平来测试。 可以确定合适的调制方案。

公开(公告)号：US07617288B2

公开(公告)日：2009-11-10

申请号：US10333321

申请日：2001-07-11

Applicant: Guenter Beyer ,  Reiner Gieck

Inventor： Guenter Beyer ,  Reiner Gieck

IPC: G06F15/16 ,  G01R31/08

CPC classification number: H04L1/188 ,  H04L1/0002 ,  H04L1/002 ,  H04L1/0025 ,  H04L1/1848 ,  Y02D50/10

Abstract: In state of the art baseband methods, the range in the access area decreases with increasing transmission speed. When a limit is reached with a predetermined distance and a selected speed, it is no longer possible to change over to an even greater speed. Otherwise, the synchronism between the transmitter and receiver is lost. The invention resolves this deficiency by combining the features of broadband technology with an acknowledged message exchange by means of which the parameters can be controlled between the transmitter and the receiver.

Abstract translation: 在现有技术的基带方法中，接入区域的范围随着传输速度的增加而减小。 当以预定的距离和选定的速度达到极限时，不再能够改变到更大的速度。 否则，发送器和接收器之间的同步丢失。 本发明通过将宽带技术的特征与确认的消息交换相结合来解决这个缺陷，通过该消息可以在发射机和接收机之间控制参数。

公开(公告)号：US20090238208A1

公开(公告)日：2009-09-24

申请号：US11721611

申请日：2005-12-08

Applicant: Katsuyoshi Naka

Inventor： Katsuyoshi Naka

IPC: H04J3/22

CPC classification number: H04L47/10 ,  H04L1/0003 ,  H04L1/0007 ,  H04L1/002 ,  H04L1/0061 ,  H04L1/0072 ,  H04L1/16 ,  H04L25/0222 ,  H04L27/2602 ,  H04L47/14 ,  H04L47/365 ,  H04L69/22 ,  H04W28/06

Abstract: A wireless communication apparatus wherein the throughput is improved. In a wireless communication apparatus (100), a frame generating part (120) adds a header to a data portion to form a transport frame. A control part (190) acquires a variation index in a propagation path and decides the length of the data portion of the transport frame in accordance with the propagation path variation index. In this way, when the propagation path variation index is large, that is, the degree of propagation path variation is high, the data portion can be shortened. Contrarily, when the propagation path variation index is small, that is, the degree of propagation path variation is low, the data portion can be elongated. Thus, when the degree of propagation path variation is high and hence the probability of reception of a retransmission request from a receiving end is high, the data portion can be shortened to prevent a degradation of the throughput that would occur due to a transmission of long data. Contrarily, when the probability of reception of a retransmission request is low, a long data can be transmitted to improve the throughput.

Abstract translation: 一种提高吞吐量的无线通信装置。 在无线通信装置（100）中，帧生成部（120）向数据部添加报头以形成传送帧。 控制部分（190）获取传播路径中的变化索引，并且根据传播路径变化指数来确定传输帧的数据部分的长度。 以这种方式，当传播路径变化指数大时，即传播路径变化度高时，可以缩短数据部分。 相反，当传播路径变化指数小时，即传播路径变化度低时，数据部分可以被拉长。 因此，当传播路径变化度高时，从接收端接收到重发请求的概率高时，可以缩短数据部分，以防止由于长时间传输而发生的吞吐量的劣化 数据。 相反，当重发请求的接收概率低时，可以发送长数据以提高吞吐量。

公开(公告)号：US20080279092A1

公开(公告)日：2008-11-13

申请号：US11801785

申请日：2007-05-11

Applicant: Amer A. Hassan ,  Bernard D. Aboba ,  Kun Tan ,  Jiansong Zhang

Inventor： Amer A. Hassan ,  Bernard D. Aboba ,  Kun Tan ,  Jiansong Zhang

IPC: G06F11/00

CPC classification number: H04L1/002 ,  H04L1/0002 ,  H04L1/0009 ,  H04L1/0021 ,  H04L1/203

Abstract: A computing device configured for wireless communication may effectively control adaptation to channel conditions. The device may be configured to identify and classify conditions impacting performance of a channel so that appropriate adaptations may be made. Interference may be detected by correlating received signal strength and packet errors. High received signal strength correlated to a high packet error rate may signify presence of a source of interference. Once a source of interference is detected, other criteria may be used to determine the nature of the interference so that an adaptation that is minimally disruptive of applications can be selected. Additionally, channel degradation may be predicted by monitoring trends in error rates, including Forward Error Correction rates, and adaptation may be used before packet error rates exceed an unacceptable level.

Abstract translation: 配置用于无线通信的计算设备可以有效地控制对信道条件的适配。 该设备可以被配置为识别和分类影响信道性能的条件，以便进行适当的调整。 可以通过将接收的信号强度和分组错误相关联来检测干扰。 与高分组错误率相关的高接收信号强度可能意味着存在干扰源。 一旦检测到干扰源，可以使用其他标准来确定干扰的性质，从而可以选择最小程度地破坏应用的适配。 另外，可以通过监视错误率的趋势（包括前向纠错率）来预测信道恶化，并且可以在分组错误率超过不可接受的水平之前使用适配。