公开(公告)号：HUE035455T2

公开(公告)日：2018-05-02

申请号：HUE12714489

申请日：2012-04-04

Applicant: QUALCOMM INC

Inventor： ABRAHAM SANTOSH PAUL ,  SHELLHAMMER STEPHEN J

IPC: H04W16/14

公开(公告)号：CA2667739C

公开(公告)日：2013-10-01

申请号：CA2667739

申请日：2007-11-10

Applicant: QUALCOMM INC

Inventor： SHELLHAMMER STEPHEN J

IPC: H04B1/46

Abstract: A method for detecting the presence of a transmission signal in a wireless spectrum channel. The frequency of a signal is converted from a first frequency to a second frequency. The signal with the second frequency is filtered to remove signals that are not within the band of the second frequency. An averaged periodogram of the signal is calculated. A value of the averaged periodogram is compared to a threshold. The presence of the transmission signal is detected, if the value of the averaged periodogram exceeds the threshold.

公开(公告)号：AU2007319384B2

公开(公告)日：2011-07-07

申请号：AU2007319384

申请日：2007-11-10

Applicant: QUALCOMM INC

Inventor： SHELLHAMMER STEPHEN J

IPC: H04B1/46

Abstract: A method for detecting the presence of a transmission signal in a wireless spectrum channel. The frequency of a signal is converted from a first frequency to a second frequency. The signal with the second frequency is filtered to remove signals that are not within the band of the second frequency. An averaged periodogram of the signal is calculated. A value of the averaged periodogram is compared to a threshold. The presence of the transmission signal is detected, if the value of the averaged periodogram exceeds the threshold.

公开(公告)号：MX2009004929A

公开(公告)日：2009-05-21

申请号：MX2009004929

申请日：2007-11-10

Applicant: QUALCOMM INC

Inventor： SHELLHAMMER STEPHEN J

IPC: H04B1/46

Abstract: Un método para detectar la presencia de una señal de transmisión en un canal de espectro inalámbrico. La frecuencia de una señal es convertida desde una primera frecuencia a una segunda frecuencia. La señal con la segunda frecuencia es filtrada para eliminar señales que no están dentro de la banda de la segunda frecuencia. Se calcula un periodograma promediado de la señal. Se compara a un umbral el valor del periodograma promediado. Se detecta la presencia de la señal de transmisión, si el valor del periodograma promediado excede el umbral.

公开(公告)号：ZA201302866B

公开(公告)日：2016-08-31

申请号：ZA201302866

申请日：2013-04-19

Applicant: QUALCOMM INC

Inventor： JAIN AVINASH ,  SHELLHAMMER STEPHEN J ,  ABRAHAM SANTOSHM PAUL ,  SAMPATH HEMANTH

Abstract: Certain aspects of the present disclosure provide techniques and apparatus for operating in a television white space (TVWS) network. One example method generally includes receiving, at an apparatus, a message with a field indicating a current version of an unused frequency spectrum map (e.g., a white space map (WSM)), the unused frequency spectrum map indicating channels usable for wireless communications; determining whether the current version of the unused frequency spectrum map is different than a previous version of the unused frequency spectrum map; and using a channel for wireless communications based on the determination.; Another example method generally includes accessing a database of available channels for a current location of an apparatus via a neighboring portable or fixed enabling apparatus and enabling one or more portable dependent apparatuses for the wireless communications via one or more of the available channels.

公开(公告)号：BR112013010832A2

公开(公告)日：2016-08-16

申请号：BR112013010832

申请日：2011-11-02

Applicant: QUALCOMM INC

Inventor： JAIN AVINASH ,  SAMPATH HEMANTH ,  ABRAHAM SANTOSH PAUL ,  SHELLHAMMER STEPHEN J

IPC: H04W16/14 ,  H04W72/04

Abstract: protocolos para habilitar dispositivos de modo 1 e modo 2 de redes de espaço em branco de tv. certos aspectos da presente descrição proveem técnicas e aparelho para operar em uma rede deespaço branco de televisão (tvws). um método exemplar inclui geralmente receber, em um aparelho, uma mensagem com um campo que indica uma versão atual de um mapa de espectro de frequência não utilizado (por exemplo, um mapa de espaço em branco (wsm), o mapa de espectro de frequência não utilizado indicando canais utilizáveis para comunicações sem fio; determinar se a versão atual do mapa de espectro de frequência não utilizado é diferente de uma versão anterior do mapa de espectro de frequência não utilizado, e usar um canal para comunicação sem fio com base na determinação. outro método exemplar inclui geralmente o acesso ao banco de dados de canais disponíveis para uma localização atual de um aparelho através de um aparelho de localização atul de um aparelho através de um aparelho de habilitação fixo ou portátil vizinho e habilitar um ou mais aparelhos dependentes portáteis para as comunicações sem fio através dos um ou mais canais disponíveis.

公开(公告)号：IN1847MUN2014A

公开(公告)日：2015-07-03

申请号：IN1847MUN2014

申请日：2014-09-19

Applicant: QUALCOMM INC

Inventor： SHELLHAMMER STEPHEN J

IPC: H04L27/26

Abstract: A coax network unit (CNU) is coupled to a coax line terminal (CLT) by a cable plant. In a discovery mode of operation the CNU receives from the CLT one or more message packets that include one or more orthogonal frequency division multiplexing (OFDM) symbols with cyclic prefixes of a first length. In a normal mode of operation subsequent to the discovery mode the CNU receives data packets comprising OFDM symbols from the CLT. The OFDM symbols of the received data packets have cyclic prefixes of a second length that is less than the first length.

公开(公告)号：UA93115C2

公开(公告)日：2011-01-10

申请号：UAA200905808

申请日：2007-11-10

Applicant: QUALCOMM INC

Inventor： SHELLHAMMER STEPHEN J

IPC: H04B1/00 ,  H04B1/44 ,  H04B1/06

Abstract: Способвыявленияналичияпередающегосигналав каналедиапазонабеспроводнойсвязи. Частотусигналапревращаютизпервойчастотыв другуючастоту. Сигналвторойчастотыфильтруютдляудалениясигналов, которыенепопадаютв полосупропускавторойчастоты. Вычисляютусредненнуюпериодограммуданногосигнала. Величинуусредненнойпериодограммысравниваютс порогом. Наличиепередающегосигналавыявлена, есливеличинаусредненнойпериодограммыпревышаетпорог.

公开(公告)号：CA2667739A1

公开(公告)日：2008-05-22

申请号：CA2667739

申请日：2007-11-10

Applicant: QUALCOMM INC

Inventor： SHELLHAMMER STEPHEN J

IPC: H04B1/46

Abstract: A method for detecting the presence of a transmission signal in a wireles s spectrum channel. The frequency of a signal is converted from a first freq uency to a second frequency. The signal with the second frequency is filtere d to remove signals that are not within the band of the second frequency. An averaged periodogram of the signal is calculated. A value of the averaged p eriodogram is compared to a threshold. The presence of the transmission sign al is detected, if the value of the averaged periodogram exceeds the thresho ld.

公开(公告)号：MY145738A

公开(公告)日：2012-03-30

申请号：MYPI20091552

申请日：2007-11-10

Applicant: QUALCOMM INC

Inventor： SHELLHAMMER STEPHEN J

IPC: H04L27/00

Abstract: A METHOD FOR DETECTING THE PRESENCE OF A TRANSMISSION SIGNAL IN A WIRELESS SPECTRUM CHANNEL. THE FREQUENCY OF A SIGNAL IS CONVERTED (302) FROM A FIRST FREQUENCY TO A SECOND FREQUENCY. THE SIGNAL WITH THE SECOND FREQUENCY IS FILTERED (304) TO REMOVE SIGNALS THAT ARE NOT WITHIN THE BAND OF THE SECOND FREQUENCY. AN AVERAGED PERIODOGRAM (712) OF THE SIGNAL IS CALCULATED (306). A VALUE OF THE AVERAGED PERIODOGRARN (712) IS COMPARED (310) TO A THRESHOLD. THE PRESENCE OF THE TRANSMISSION SIGNAL IS DETECTED, IF THE VALUE OF THE AVERAGED PERIODOGRAM (712) EXCEEDS THE THRESHOLD.