公开(公告)号：WO2016034207A1

公开(公告)日：2016-03-10

申请号：PCT/EP2014/068573

申请日：2014-09-02

Applicant: TELECOM ITALIA S.P.A. ,  POLITECNICO DI TORINO

Inventor： GAUDINO, Roberto ,  FERRERO, Valter ,  MERCINELLI, Roberto ,  VALVO, Maurizio

IPC: H04J14/02

CPC classification number: H04J14/0282 ,  H04B10/272 ,  H04J14/0227 ,  H04J14/0252

Abstract: It is disclosed a method for activating an ONU in a multi-wavelength PON. Other ONUs may be already active and transmit upstream signals to the OLT on various upstream channels. The new ONU transmits an activation signal superimposed to such upstream signals. Since the ONU may comprise an uncalibrated tunable transmitter, initially the activation signal wavelength might be different from that upon which the ONU shall be activated. The activation signal optical power is lower than the other upstream signals, so as not to impair their reception at the OLT. The OLT operates the ONUs already active on the upstream channel on which the new ONU shall be activated to suspend transmission for one or more time gaps, during which the OLT detects the activation signal. This improves the activation signal detection conditions, thereby allowing to increase its bitrate. An acceptable duration of the activation procedure is then achieved.

Abstract translation: 公开了一种在多波长PON中激活ONU的方法。 其他ONU可能已经是活动的，并且在上行信道上向OLT发送上行信号。 新的ONU将叠加的激活信号发送到这样的上行信号。 由于ONU可能包括未校准的可调谐发射机，所以最初的激活信号波长可能不同于ONU将被激活的波长。 激活信号光功率低于其他上行信号，从而不损害其在OLT处的接收。 OLT操作在新的ONU被激活的上行信道上已经有效的ONU暂停一个或多个时隙的传输，在该时间间隔期间OLT检测到激活信号。 这改善了激活信号检测条件，从而允许增加其比特率。 然后实现激活程序的可接受的持续时间。

公开(公告)号：WO2007051488A1

公开(公告)日：2007-05-10

申请号：PCT/EP2005/055654

申请日：2005-10-31

Applicant: TELECOM ITALIA S.p.A. ,  CAPURSO, Alessandro ,  MERCINELLI, Roberto ,  VALENTINI, Marcello ,  VALVO, Maurizio

Inventor： CAPURSO, Alessandro ,  MERCINELLI, Roberto ,  VALENTINI, Marcello ,  VALVO, Maurizio

IPC: H04Q11/00

CPC classification number: H04Q11/0067 ,  H04Q11/0066

Abstract: It is disclosed a method of transmitting data packets, for instance Ethernet packets, through a passive optical network (PON), for instance a GPON. The method comprises: receiving a first data packet (EthP) from a first interface (ONUi, OLT) of the passive optical network (PON), the first data packet (EthP) comprising precedence information (p. VID); encapsulating the first data packet (EthP) in a second data packet (GEMF) at the first interface (ONUi, OLT); and transmitting the second data packet (GEMF) through the passive optical network (PON) towards a second interface (OLT, ONUi), wherein encapsulating comprises inserting in a header field (PID) of the second data packet (GEMF) a value indicative of the precedence information (p, VID). The value indicative of the precedence information (p, VID) could comprises priority and/or virtual LAN identifier. Preferably, it is inserted into the Port-Identifier field of the second packet (GEMF), which is a GEM frame. This method allows a better use of bandwidth in the optical network (PON).

Abstract translation: 公开了一种通过无源光网络（PON）（例如GPON）发送数据分组（例如以太网分组）的方法。 该方法包括：从无源光网络（PON）的第一接口（ONUi，OLT）接收第一数据分组（EthP），所述第一数据分组（EthP）包括优先信息（p.VID）; 在第一接口（ONUi，OLT）处将第一数据分组（EthP）封装在第二数据分组（GEMF）中; 以及通过无源光网络（PON）将第二数据分组（GEMF）发送到第二接口（OLT，ONUi），其中封装包括在第二数据分组（GEMF）的报头字段（PID）中插入指示 优先级信息（p，VID）。 指示优先级信息（p，VID）的值可以包括优先级和/或虚拟LAN标识符。 优选地，其被插入作为GEM帧的第二分组（GEMF）的端口标识符字段中。 该方法可以更好地利用光网络（PON）中的带宽。

公开(公告)号：WO2009143893A1

公开(公告)日：2009-12-03

申请号：PCT/EP2008/056616

申请日：2008-05-29

Applicant: TELECOM ITALIA S.p.A. ,  VALVO, Maurizio ,  SOLINA, Paolo ,  MERCINELLI, Roberto

Inventor： VALVO, Maurizio ,  SOLINA, Paolo ,  MERCINELLI, Roberto

IPC: H04Q11/00 ,  H04J3/16 ,  H04J14/00

CPC classification number: H04Q11/0067 ,  H04B10/07 ,  H04B10/272 ,  H04J14/0226 ,  H04J14/0227 ,  H04J14/0247 ,  H04J14/0249 ,  H04J14/0282 ,  H04Q2011/0079 ,  H04Q2011/009

Abstract: It is disclosed a method for localizing an ONT in an optical access network comprising an OLT and a number n of optical links. The method comprises: detecting that the ONT is connected to an optical link and retrieving from it a termination identifier univocally identifying the ONT; using the termination identifier for retrieving an optical link identifier associated to the termination identifier and univocally identifying a given optical link of the optical links; inducing a change in an optical connection between the optical line termination and the given optical link, thus modifying an optical parameter of first optical signals received at the OLT through the given optical link; checking whether second optical signals received at the OLT from the ONT are affected by the change; and in the affirmative, determining that the ONT is connected to the first optical link.

Abstract translation: 公开了一种用于在包括OLT和数量为n的光链路的光接入网中本地化ONT的方法。 该方法包括：检测ONT是否连接到光链路，并从其中检索一个终端标识符，以便识别ONT; 使用所述终止标识符来检索与所述终止标识符相关联的光链路标识符，并且单独地识别所述光链路的给定光链路; 引起光线路终端与给定光链路之间的光连接的变化，从而修改通过给定光链路在OLT处接收到的第一光信号的光参数; 检查在OLT上从ONT接收到的第二光信号是否受到变化的影响; 并且肯定地，确定ONT连接到第一光链路。