中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

12 records (took 0.02 seconds)

    DETECTION OF UNOCCUPIED FREQUENCY BAND
    1.
    发明申请
    DETECTION OF UNOCCUPIED FREQUENCY BAND 审中-公开
    检测未被占用的频带

    公开(公告)号：WO2008043936A3

    公开(公告)日：2008-06-05

    申请号：PCT/FR2007052058

    申请日：2007-10-02

    Applicant: FRANCE TELECOM ,  GHOZZI MOHAMED ,  DOHLER MICHAEL

    Inventor： GHOZZI MOHAMED ,  DOHLER MICHAEL

    IPC: H04W72/02

    CPC classification number: H04W72/02 ,  H04B17/382 ,  H04W16/14 ,  H04W72/10

    Abstract: An unoccupied frequency band (W) is detected in a telecommunications network by obtaining first values relating to a signal received (r(n)) for respective corresponding times, in this frequency band. Next, a compound signal is obtained in the form of vectors (Y n ) respectively associated with these first values, each vector having M components resulting respectively from the products of the first value associated with said vector and M second values relating to the signal received respectively for M offset times (ti) shifted with respect to the time corresponding to said first value, M being a greater integer. Next, at least one first and one second energy vector (E L , E H ) are determined, each containing M components corresponding respectively to energy values of the compound signal for the M offset times, respectively on a first frequency band and on a second frequency band, which are situated either side of a reference frequency. Finally, a decision is made as to whether said frequency band is unoccupied on the basis of a comparison of a distribution of the energy values of the compound signal over the first frequency band and of a distribution of the energy values of the compound signal over the second frequency band.

    Abstract translation: 通过在该频带中获得与接收到的信号（r（n））有关的相应对应时间的第一值，在电信网络中检测到未占用频带（W）。 接下来，以分别与这些第一值相关联的矢量（Y n ）的形式获得复合信号，每个矢量具有分别由与所述矢量相关的第一值与M 与分别针对M偏移时间（ti）接收的信号有关的第二值相对于与所述第一值相对应的时间偏移，M是较大的整数。 接下来，确定至少一个第一和一个第二能量矢量（E L ，E H ），每个包含M个分量，分别对应于所述复合信号的能量值 分别位于参考频率的任一侧的第一频带和第二频带上的M个偏移时间。 最后，基于比较第一频带上的复合信号的能量值的分布以及复合信号的能量值在第一频带上的分布来判断所述频带是否未被占用 第二频带。

    METHOD FOR DETERMINING THE PRESENCE OF A TELECOMMUNICATION SIGNAL ON A FREQUENCY BAND
    2.
    发明申请
    METHOD FOR DETERMINING THE PRESENCE OF A TELECOMMUNICATION SIGNAL ON A FREQUENCY BAND 审中-公开
    用于确定频带上电信信号存在的方法

    公开(公告)号：WO2008113958A3

    公开(公告)日：2008-11-20

    申请号：PCT/FR2008050316

    申请日：2008-02-26

    Applicant: FRANCE TELECOM ,  GHOZZI MOHAMED ,  DOHLER MICHAEL

    Inventor： GHOZZI MOHAMED ,  DOHLER MICHAEL

    IPC: H04B17/00

    CPC classification number: H04B17/26

    Abstract: The invention relates to a method for determining the presence of a telecommunication signal on a frequency band, said signal being considered as cyclostationary, that comprises the following steps: determining an energy vector T (14) including m components respectively representative of the energy values of an self-correlation function of the received signal on said frequency band for m offset times; calculating correlation elements (15) between the m components of the energy vector T; carrying out a statistical calculation (16) on the calculated correlation elements in order to determine a statistical indicator £; comparing (17) the statistical indicator£ thus obtained with a predetermined threshold in order to determine the presence of a telecommunication signal on said frequency band.

    Abstract translation: 本发明涉及一种用于确定频带上的电信信号的存在的方法，所述信号被认为是周期平稳的，其包括以下步骤：确定能量矢量T（14），其包括分别代表能量值 对于m个偏移时间，在所述频带上的接收信号的自相关函数; 计算能量矢量T的m个分量之间的相关元素（15）; 对计算的相关元素进行统计计算（16），以确定统计指标£; 将由此获得的统计指标与预定阈值进行比较（17），以便确定所述频带上的电信信号的存在。

    PROCEDIMIENTO PARA ORGANIZAR UNA RED DE OBJETOS COMUNICANTES, Y OBJETO COMUNICANTE PARA LA PUESTA EN PRACTICA DEL PROCEDIMIENTO.
    5.
    发明专利
    PROCEDIMIENTO PARA ORGANIZAR UNA RED DE OBJETOS COMUNICANTES, Y OBJETO COMUNICANTE PARA LA PUESTA EN PRACTICA DEL PROCEDIMIENTO. 未知

    公开(公告)号：ES2339893T3

    公开(公告)日：2010-05-26

    申请号：ES07731846

    申请日：2007-03-29

    Applicant: FRANCE TELECOM

    Inventor： LU JIA-LIANG ,  DOHLER MICHAEL ,  BARTHEL DOMINIQUE ,  VALOIS FABRICE

    IPC: H04W84/20 ,  H04L12/56 ,  H04L29/12

    Abstract: Procedimiento para organizar una red de objetos comunicantes, en al menos una partición que comprende una pluralidad de celdas de comunicación cubiertas respectivamente por una pluralidad de nodos líderes adecuados para comunicar entre sí, disponiendo la red de un conjunto de direcciones a asignar escindido en una pluralidad de conjuntos de direcciones que serán gestionados de forma distribuida por los nodos líderes de la red, procedimiento en el que, cuando un nuevo nodo llega a la red, el procedimiento comprende una fase a) de detección de nodo líder seguida, llegado el caso, por una fase b) de detección de nodo miembro, de modo que: - durante la fase a), si el nuevo nodo detecta en sus proximidades un nodo líder, dicho nodo líder le asigna una dirección extraída de un conjunto de direcciones que gestiona y el nuevo nodo asume el papel de nodo miembro en la celda del nodo líder, estando los mensajes procedentes de o con destino a un nodo miembro que pertenecen a una celda dada, destinados a transitar por medio del nodo líder que cubre dicha celda; caracterizado porque: - si el nuevo nodo no detecta nodo líder en sus proximidades, pasa a la fase b), - durante la fase b), si el nuevo nodo detecta en sus proximidades un nodo miembro que pertenece a una primera celda, asume el papel de líder que cubre una segunda celda, obtiene un conjunto disponible de direcciones a gestionar y se asigna una de las direcciones de dicho conjunto obtenido.

    6.
    发明专利
    未知

    公开(公告)号：AT456921T

    公开(公告)日：2010-02-15

    申请号：AT07731846

    申请日：2007-03-29

    Applicant: FRANCE TELECOM

    Inventor： LU JIA-LIANG ,  DOHLER MICHAEL ,  BARTHEL DOMINIQUE ,  VALOIS FABRICE

    IPC: H04W84/20 ,  H04L12/56 ,  H04L29/12

    Abstract: A system and method organize a network of communicating objects in at least one partition comprising a plurality of communication cells respectively covered by a plurality of leader nodes, the network having a set of allocatable addresses split into a plurality of address pools distributively managed by the leader nodes. Upon a new node arrival, phase (a) and possibly phase (b) are executed. During phase (a), if the new node detects a leader node, it allocates an address from its managed address pool and the new node assumes a member node roll in the leader node cell. If the new node does not detect any leader node in its vicinity, it goes on to the phase (b), wherein, if the new node detects a first cell member node, it assumes the role of leader covering a second cell, obtains an available pool of managed addresses and is allocated one of the obtained addresses.

    8.
    发明专利
    未知

    公开(公告)号：DE602007004581D1

    公开(公告)日：2010-03-18

    申请号：DE602007004581

    申请日：2007-03-29

    Applicant: FRANCE TELECOM

    Inventor： LU JIA-LIANG ,  DOHLER MICHAEL ,  BARTHEL DOMINIQUE ,  VALOIS FABRICE

    IPC: H04W84/20 ,  H04L12/56 ,  H04L29/12

    Abstract: A system and method organize a network of communicating objects in at least one partition comprising a plurality of communication cells respectively covered by a plurality of leader nodes, the network having a set of allocatable addresses split into a plurality of address pools distributively managed by the leader nodes. Upon a new node arrival, phase (a) and possibly phase (b) are executed. During phase (a), if the new node detects a leader node, it allocates an address from its managed address pool and the new node assumes a member node roll in the leader node cell. If the new node does not detect any leader node in its vicinity, it goes on to the phase (b), wherein, if the new node detects a first cell member node, it assumes the role of leader covering a second cell, obtains an available pool of managed addresses and is allocated one of the obtained addresses.

    PROCEDE DE DETERMINATION DE LA PRESENCE D'UN SIGNAL DE TELECOMMUNICATIONS SUR UNE BANDE DE FREQUENCES.
    9.
    发明专利
    PROCEDE DE DETERMINATION DE LA PRESENCE D'UN SIGNAL DE TELECOMMUNICATIONS SUR UNE BANDE DE FREQUENCES. 未知

    公开(公告)号：FR2913171A1

    公开(公告)日：2008-08-29

    申请号：FR0753557

    申请日：2007-02-28

    Applicant: FRANCE TELECOM

    Inventor： GHOZZI MOHAMED ,  DOHLER MICHAEL

    IPC: H04Q7/36

    Abstract: L'invention concerne un procédé de détermination de la présence d'un signal de télécommunications sur une bande de fréquences, ledit signal étant supposé cyclostationnaire, comportant des étapes de :- détermination d'un vecteur d'énergie T (14) comportant m composantes respectivement représentatives de valeurs d'énergie d'une fonction d'autocorrélation du signal reçu sur ladite bande de fréquences pour m temps de décalage,- calcul d'éléments de corrélation (15) entre les m composantes du vecteur d'énergie T,- réalisation d'un calcul statistique (16) sur les éléments de corrélation calculés afin de déterminer un indicateur statistique l,- comparaison (17) de l'indicateur statistique obtenu l avec un seuil prédéterminé dans le but de déterminer la présence d'un signal de télécommunications sur ladite bande de fréquences.

Patent Agency Ranking