公开(公告)号：US08937912B2

公开(公告)日：2015-01-20

申请号：US12508286

申请日：2009-07-23

Applicant: Laurent S Mazet ,  Sophie Gault ,  Mohamed Kamoun

Inventor： Laurent S Mazet ,  Sophie Gault ,  Mohamed Kamoun

IPC: H04W4/00 ,  H04W74/08 ,  H04W72/04 ,  H04W74/00 ,  H04W84/12

CPC classification number: H04W74/0816 ,  H04W72/04 ,  H04W74/004 ,  H04W74/006 ,  H04W84/12

Abstract: A system and method using multiple request to send (RTS) messages to enhance wireless communication resource allocation. The system and method operates a receiver to receive an RTS message from a station operating in, for example, a very high throughput wireless local area network, and in response, to transmit an ask for request (AFR) message. The receiver can receive multiple RTS messages and in response, issue respective AFR messages, to thus perform RTS negotiation of resources for access by the stations. If the receiver fails to receive any further RTS messages due to, for example, collision of RTS messages sent by multiple stations or failure of any other stations to send an RTS message, the receiver can then issue a clear to send (CTS) message indicating to all stations that have sent an RTS message that they are clear to send to the receiver using the information contained in the AFR message.

Abstract translation: 一种使用多个请求发送（RTS）消息来增强无线通信资源分配的系统和方法。 该系统和方法操作接收机以从例如在非常高吞吐量的无线局域网中操作的站接收RTS消息，并且响应于发送请求请求（AFR）消息。 接收机可以接收多个RTS消息，并作为响应，发出相应的AFR消息，从而执行RTS协商用于由站访问的资源。 如果由于例如由多个站发送的RTS消息的冲突或任何其他站的故障发送RTS消息而导致接收机未能接收到任何进一步的RTS消息，则接收机然后可以发出明确发送（CTS）消息，指示 发送RTS消息的所有站点，使用AFR消息中包含的信息清楚发送给接收方。

公开(公告)号：US20110195672A1

公开(公告)日：2011-08-11

申请号：US12704484

申请日：2010-02-11

Applicant: Patrick Pratt ,  William Plumb ,  Sophie Gault ,  Pei-Shiun Chung

Inventor： Patrick Pratt ,  William Plumb ,  Sophie Gault ,  Pei-Shiun Chung

IPC: H04B1/10 ,  H04B1/44

CPC classification number: H04B1/525

Abstract: A wireless communication unit includes a transmitter for processing a baseband transmit signal to produce a first radio frequency signal. A receiver is arranged to convert a second radio frequency signal to a baseband receive signal, where the receiver has a summation module arranged to add a cancellation signal to the baseband receive signal. A selectivity element is arranged to couple the transmitter and the receiver to an antenna, where a reduced portion of the first radio frequency signal is introduced into the second radio frequency signal thereby creating a second order inter-modulation distortion component in the baseband receive signal. An adaptive estimator module has a filter for filtering the baseband receive signal to remove dc offsets associated with the second order inter-modulation distortion component and generate the cancellation signal based on the baseband transmit signal and the filtered baseband receive signal for inputting to the summation module.

Abstract translation: 无线通信单元包括用于处理基带发射信号以产生第一射频信号的发射机。 接收器被布置为将第二射频信号转换为基带接收信号，其中接收器具有被设置为将相消号信号加到基带接收信号上的求和模块。 布置选择性元件以将发射器和接收器耦合到天线，其中第一射频信号的减少的部分被引入到第二射频信号中，从而在基带接收信号中产生二阶互调失真分量。 自适应估计器模块具有用于对基带接收信号进行滤波以去除与二阶互调失真分量相关联的直流偏移的滤波器，并且基于基带发送信号和滤波后的基带接收信号产生抵消信号，以输入到求和模块 。

公开(公告)号：US20100061334A1

公开(公告)日：2010-03-11

申请号：US12542056

申请日：2009-08-17

Applicant: Sophie Gault ,  Roberta Fracchia

Inventor： Sophie Gault ,  Roberta Fracchia

IPC: H04W72/04 ,  H04W4/00 ,  H04J1/00 ,  H04L12/413 ,  H04B7/212

CPC classification number: H04L5/0005 ,  H04B7/2656 ,  H04L5/0016 ,  H04L5/0037 ,  H04L5/0044 ,  H04L5/0062 ,  H04W72/0446 ,  H04W72/0453 ,  H04W72/085 ,  H04W74/02

Abstract: A wireless local area network comprising an access point and a plurality of remote stations arranged to communicate using Orthogonal Frequency Division Multiplex (OFDM). The system can operate in a first access mode wherein access to the access point is in accordance with a Carrier Sense Multiple Access (CSMA) scheme and in a temporary second access mode wherein access to the access point is in accordance with a Time Division Multiple Access (TDMA) scheme. A resource allocation of resource blocks when in the TDMA mode is furthermore such that resource blocks may be allocated to a plurality of remote stations which have overlapping time intervals and disjoint sets of OFDM subcarriers thereby allowing simultaneous communication for the plurality of remote stations within the overlapping time interval. The access operation is controlled by a single message transmitted from the access point. The invention may in particular be suitable for IEEE 802.11 systems.

Abstract translation: 一种无线局域网，包括接入点和多个远程站，所述远程站被布置为使用正交频分复用（OFDM）进行通信。 该系统可以以第一接入模式操作，其中接入接入点的接入符合载波侦听多路访问（CSMA）方案，并且在临时第二接入模式中，其中接入接入点的接入符合时分多址 （TDMA）方案。 此外，在TDMA模式中资源块的资源分配进一步使得可以将资源块分配给具有重叠的时间间隔和不相交的OFDM子载波组的多个远程站，从而允许在重叠内的多个远程站的同时通信 时间间隔。 访问操作由从接入点发送的单个消息控制。 本发明特别适用于IEEE 802.11系统。

公开(公告)号：US08320868B2

公开(公告)日：2012-11-27

申请号：US12704484

申请日：2010-02-11

Applicant: Patrick Pratt ,  William Plumb ,  Sophie Gault ,  Pei-Shiun Chung

Inventor： Patrick Pratt ,  William Plumb ,  Sophie Gault ,  Pei-Shiun Chung

IPC: H04B1/10 ,  H03D1/06

CPC classification number: H04B1/525

Abstract: A wireless communication unit includes a transmitter for processing a baseband transmit signal to produce a first radio frequency signal. A receiver is arranged to convert a second radio frequency signal to a baseband receive signal, where the receiver has a summation module arranged to add a cancellation signal to the baseband receive signal. A selectivity element is arranged to couple the transmitter and the receiver to an antenna, where a reduced portion of the first radio frequency signal is introduced into the second radio frequency signal thereby creating a second order inter-modulation distortion component in the baseband receive signal. An adaptive estimator module has a filter for filtering the baseband receive signal to remove dc offsets associated with the second order inter-modulation distortion component and generate the cancellation signal based on the baseband transmit signal and the filtered baseband receive signal for inputting to the summation module.

Abstract translation: 无线通信单元包括用于处理基带发射信号以产生第一射频信号的发射机。 接收器被布置为将第二射频信号转换为基带接收信号，其中接收器具有被设置为将相消号信号加到基带接收信号上的求和模块。 布置选择性元件以将发射器和接收器耦合到天线，其中第一射频信号的减少的部分被引入到第二射频信号中，从而在基带接收信号中产生二阶互调失真分量。 自适应估计器模块具有用于对基带接收信号进行滤波以去除与二阶互调失真分量相关联的直流偏移的滤波器，并且基于基带发送信号和滤波后的基带接收信号产生抵消信号，以输入到求和模块 。

公开(公告)号：US08320866B2

公开(公告)日：2012-11-27

申请号：US12704499

申请日：2010-02-11

Applicant: Patrick Pratt ,  William Plumb ,  Sophie Gault ,  Pei-Shiun Chung

Inventor： Patrick Pratt ,  William Plumb ,  Sophie Gault ,  Pei-Shiun Chung

IPC: H04B1/10 ,  H03D1/06

CPC classification number: H04B1/52 ,  H04B1/525

Abstract: A wireless communication unit includes a transmitter, a receiver, a selectivity element and a baseband processing module. The receiver has at least one summation module arranged to add a cancellation signal to the quadrature baseband receive signal. a baseband processing module arranged to: receive the quadrature baseband transmit signal and quadrature baseband receive signal; apply independent gain and phase adjustments to quadrature portions of the quadrature baseband transmit signal, based on at least one signal component of the quadrature baseband receive signal, to form independent cancellation signals; and apply the independent cancellation signals to the at least one summation module.

Abstract translation: 无线通信单元包括发射机，接收机，选择性元件和基带处理模块。 接收器具有至少一个求和模块，其被布置成将抵消信号加到正交基带接收信号。 基带处理模块，被配置为：接收正交基带发送信号和正交基带接收信号; 基于正交基带接收信号的至少一个信号分量对正交基带发送信号的正交部分进行独立的增益和相位调整，以形成独立的消除信号; 以及将所述独立消除信号应用于所述至少一个求和模块。

公开(公告)号：US20100027490A1

公开(公告)日：2010-02-04

申请号：US12508286

申请日：2009-07-23

Applicant: Laurent S, Mazet ,  Sophie Gault ,  Mohamed Kamoun

Inventor： Laurent S, Mazet ,  Sophie Gault ,  Mohamed Kamoun

IPC: H04W72/04

CPC classification number: H04W74/0816 ,  H04W72/04 ,  H04W74/004 ,  H04W74/006 ,  H04W84/12

Abstract: A system and method using multiple request to send (RTS) messages to enhance wireless communication resource allocation. The system and method operates a receiver to receive an RTS message from a station operating in, for example, a very high throughput wireless local area network, and in response, to transmit an ask for request (AFR) message. The receiver can receive multiple RTS messages and in response, issue respective AFR messages, to thus perform RTS negotiation of resources for access by the stations. If the receiver fails to receive any further RTS messages due to, for example, collision of RTS messages sent by multiple stations or failure of any other stations to send an RTS message, the receiver can then issue a clear to send (CTS) message indicating to all stations that have sent an RTS message that they are clear to send to the receiver using the information contained in the AFR message.

Abstract translation: 一种使用多个请求发送（RTS）消息来增强无线通信资源分配的系统和方法。 该系统和方法操作接收机以从例如在非常高吞吐量的无线局域网中操作的站接收RTS消息，并且响应于发送请求请求（AFR）消息。 接收机可以接收多个RTS消息，并作为响应，发出相应的AFR消息，从而执行RTS协商用于由站访问的资源。 如果由于例如由多个站发送的RTS消息的冲突或任何其他站的故障发送RTS消息而导致接收机未能接收到任何进一步的RTS消息，则接收机然后可以发出明确发送（CTS）消息，指示 发送RTS消息的所有站点，使用AFR消息中包含的信息清楚发送给接收方。

公开(公告)号：US20110195673A1

公开(公告)日：2011-08-11

申请号：US12704499

申请日：2010-02-11

Applicant: Patrick Pratt ,  William Plumb ,  Sophie Gault ,  Pei-Shiun Chung

Inventor： Patrick Pratt ,  William Plumb ,  Sophie Gault ,  Pei-Shiun Chung

IPC: H04B1/44

CPC classification number: H04B1/52 ,  H04B1/525

Abstract: A wireless communication unit includes a transmitter, a receiver, a selectivity element and a baseband processing module. The receiver has at least one summation module arranged to add a cancellation signal to the quadrature baseband receive signal. a baseband processing module arranged to: receive the quadrature baseband transmit signal and quadrature baseband receive signal; apply independent gain and phase adjustments to quadrature portions of the quadrature baseband transmit signal, based on at least one signal component of the quadrature baseband receive signal, to form independent cancellation signals; and apply the independent cancellation signals to the at least one summation module.

Abstract translation: 无线通信单元包括发射机，接收机，选择性元件和基带处理模块。 接收器具有至少一个求和模块，其被布置成将抵消信号加到正交基带接收信号。 基带处理模块，被配置为：接收正交基带发送信号和正交基带接收信号; 基于正交基带接收信号的至少一个信号分量对正交基带发送信号的正交部分进行独立的增益和相位调整，以形成独立的消除信号; 以及将所述独立消除信号应用于所述至少一个求和模块。

公开(公告)号：US08194604B2

公开(公告)日：2012-06-05

申请号：US12542056

申请日：2009-08-17

Applicant: Sophie Gault ,  Roberta Fracchia

Inventor： Sophie Gault ,  Roberta Fracchia

IPC: H04W88/10 ,  H04W74/08 ,  H04W28/08 ,  H04W72/04

CPC classification number: H04L5/0005 ,  H04B7/2656 ,  H04L5/0016 ,  H04L5/0037 ,  H04L5/0044 ,  H04L5/0062 ,  H04W72/0446 ,  H04W72/0453 ,  H04W72/085 ,  H04W74/02

Abstract: A wireless local area network comprising an access point and a plurality of remote stations arranged to communicate using Orthogonal Frequency Division Multiplex (OFDM). The system can operate in a first access mode wherein access to the access point is in accordance with a Carrier Sense Multiple Access (CSMA) scheme and in a temporary second access mode wherein access to the access point is in accordance with a Time Division Multiple Access (TDMA) scheme. A resource allocation of resource blocks when in the TDMA mode is furthermore such that resource blocks may be allocated to a plurality of remote stations which have overlapping time intervals and disjoint sets of OFDM subcarriers thereby allowing simultaneous communication for the plurality of remote stations within the overlapping time interval. The access operation is controlled by a single message transmitted from the access point. The invention may in particular be suitable for IEEE 802.11 systems.

Abstract translation: 一种无线局域网，包括接入点和多个远程站，所述远程站被布置为使用正交频分复用（OFDM）进行通信。 该系统可以以第一接入模式操作，其中接入接入点的接入符合载波侦听多路访问（CSMA）方案，并且在临时第二接入模式中，其中接入接入点的接入符合时分多址 （TDMA）方案。 此外，在TDMA模式中资源块的资源分配进一步使得可以将资源块分配给具有重叠的时间间隔和不相交的OFDM子载波组的多个远程站，从而允许在重叠内的多个远程站的同时通信 时间间隔。 访问操作由从接入点发送的单个消息控制。 本发明特别适用于IEEE 802.11系统。