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    • 1. 发明申请
    • METHOD FOR TRANSMITTING DATA PACKETS WITH DIFFERRENT PRECEDENCE THROUGH A PASSIVE OPTICAL NETWORK
    • 通过被动光网络传输具有不同前提的数据包的方法
    • WO2007051488A1
    • 2007-05-10
    • PCT/EP2005/055654
    • 2005-10-31
    • TELECOM ITALIA S.p.A.CAPURSO, AlessandroMERCINELLI, RobertoVALENTINI, MarcelloVALVO, Maurizio
    • CAPURSO, AlessandroMERCINELLI, RobertoVALENTINI, MarcelloVALVO, Maurizio
    • H04Q11/00
    • H04Q11/0067H04Q11/0066
    • 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).
    • 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。
    • 4. 发明申请
    • ACTIVATION OF AN OPTICAL NETWORK UNIT IN A MULTI-WAVELENGTH PASSIVE OPTICAL NETWORK
    • 在多波长无源光网络中激活光网络单元
    • WO2017000992A1
    • 2017-01-05
    • PCT/EP2015/064859
    • 2015-06-30
    • TELECOM ITALIA S.P.A.POLITECNICO DI TORINO
    • CAPRIATA, StefanoGAUDINO, RobertoFERRERO, ValterVALVO, Maurizio
    • H04J14/02
    • H04B10/272H04B10/2507H04J14/0282
    • It is disclosed a optical transmitter for an optical network unit of a multi- wavelength passive optical network comprising an optical line termination and a number of further optical network units for transmitting upstream signals to said optical line termination on multiple upstream channels. The optical transmitter is configured to generate and transmit an optical activation signal carrying activation information to be transmitted to said optical line termination on an upstream channel, the activation signal having an optical power lower than the optical power of each one of said upstream signals. The optical transmitter comprises an optical source, a first electric source configured to modulate the optical source with a first electric signal carrying the activation information; and a second electric source configured to directly modulate the optical source with a second electric signal so as to produce a frequency chirp on the optical activation signal.
    • 公开了一种用于多波长无源光网络的光网络单元的光发射机,其包括光线路终端和用于将上行信号发送到多个上行信道上的所述光线路终端的多个另外的光网络单元。 光发送器被配置为产生并发送携带启动信息的光激活信号,以在上行信道上发送到所述光线路终端,激活信号具有低于每个所述上行信号的光功率的光功率。 光发射机包括光源,第一电源,被配置为用携带激活信息的第一电信号调制光源; 以及第二电源,被配置为用第二电信号直接调制所述光源,以在所述光激活信号上产生频率啁啾。
    • 5. 发明申请
    • ACTIVATION OF AN OPTICAL NETWORK UNIT IN A MULTI-WAVELENGTH PASSIVE OPTICAL NETWORK
    • 在多波长无源光网络中激活光网络单元
    • WO2016034207A1
    • 2016-03-10
    • PCT/EP2014/068573
    • 2014-09-02
    • TELECOM ITALIA S.P.A.POLITECNICO DI TORINO
    • GAUDINO, RobertoFERRERO, ValterMERCINELLI, RobertoVALVO, Maurizio
    • H04J14/02
    • H04J14/0282H04B10/272H04J14/0227H04J14/0252
    • 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.
    • 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。