• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
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    • 专利摘要:
    Connection circuit arranged to connect at least one electrical equipment (12) to an optical fiber (13) on which light signals of different wavelengths are likely to pass, the connection circuit comprising a wavelength multiplexer ( 16) comprising an upstream port (17) intended to be connected to the optical fiber and a plurality of downstream ports (18, 19), a plurality of optical-electrical interfaces (24, 25) each compatible with at least one standard of optical communication and each having an optical port (26) connected to one of the downstream ports of the wavelength multiplexer and an electrical port (27), an electrical processing component (35) comprising a communication port (36) via which the electrical processing component is arranged to transmit and / or receive electrical signals (TXD, RXD), and a switch (45) arranged to selectively connect the communication port of the electrical processing component to an electrical port of one of the optical-electrical interfaces.
    公开号:FR3085242A1
    申请号:FR1857602
    申请日:2018-08-22
    公开日:2020-02-28
    发明作者:Jean-Philippe Jaulin；Mikael Hardy
    申请人:Sagemcom Broadband SAS；
    IPC主号:
    专利说明:

    The invention relates to the field of circuits for connecting a local area network to an optical fiber over which light signals capable of conforming to different optical communication standards are capable of traveling.
    BACKGROUND OF THE INVENTION
    Thanks to FTTH networks (for Fiber To The 110010), many subscribers now benefit from very high speed Internet access. In an FTTH network, optical fiber reaches * the subscribers.
    It is possible to make several coexist on the same optical fiber: optical communication standards :, and thus allow an operator to distribute several services through a reduced infrastructure.
    With reference to FIG. 1, such a reduced infrastructure, which makes it possible to provide the Internet network to subscribers 1, comprises a plurality of termination equipment 2 of OIT type (for Optical Line Terminai], 2G a device for coupling wavelengths 3, and a device for coupling subscriber optical lines 4.
    Among these optical communication standards, there is for example the G-PON standard (for GigabitPassive Optical Network} which allows the transport of 25 2.5Gbps in the downstream direction and of 1.2Gbps in the uplink direction. The G-PON standard is described both at the hardware level and at the protocol level by the ITU-T G standard, 984 and by each of its sub-publications. There is also the XG-PON standard (for eXtended-Gîgabit Passive 30 Optical Network) which allows the transport of lOGbps in the downward direction and of 2,5Gbps in the upward direction The XG-PON standard is · described by standard ITU-T G.988.
    Each of these optical communication standards implements * luminous fluxes whose wavelengths (λ) 35 are precisely defined by the standard characterizing the standard. Thus, the G-PON standard is based on light signals in the downward direction whose wavelength 12: is equal to 14 90nm, and on light signals in the upward direction whose wavelength Al is equal 5 to 1310nrm. The standard XG-PON uses light signals in the downward direction · whose wavelength A4 is equal to 157 7nm, and light signals in the upward direction whose wavelength A3 is equal to 127Ohm.
    There are also other optical communication standards implementing light signals based on different wavelengths or on “combs” of wavelengths (the light signal in one direction is composed of a set of signals combined or not, and distributed over several, 15 wavelengths).
    Each subscriber 1 is equipped with an Internet gateway comprising an optical-electrical interface 6 allowing the exchange of light signals to implement optical communication standards. An optical-electrical interface S conventionally comprises a transmitter comprising a laser diode which generates light signals from electrical signals containing information to be transmitted, and a receiver comprising a photodiode for converting received light signals into electrical signals usable.
    The laser diode generates very pure monofrequency light signals. Furthermore, to immunize the receiver from other light signals present on the optical fiber, it is common to use an optical filter corresponding exactly to the wavelength of the light signals to be received.
    These components are commonly grouped within a macro-component of BQSA type (for Bidi recti onnal Optical Sub Assemby) designed specifically to interface a particular optical communication standard, and therefore a pair of wavelengths, and therefore immune. and incompatible with any other optical communication standard.
    We therefore understand that each gateway is adapted to communicate according to a single optical communication standard, and that it seems extremely complex to allow the subscriber or operator, without changing the gateway, to choose another optical communication standard. among those present on optical fiber.
    It is noted that the standards defining the optical communication standards have been defined on the basis of real field cases: in terms of available components and associated performance, and therefore define 15: performance at the limits, in particular at the limit: optical range, which leave almost no latitude to: manufacturers: of components in terms of sensitivity improvement.
    OBJECT OF THE INVENTION
    The object of the invention is to allow, with the same gateway ·: Internet, to select: an optical communication standard to be used from among a plurality of standards present on the same: optical fiber connected to the gateway.
    SUMMARY OF THE INVENTION
    With a view to achieving this goal, we propose: a connection circuit arranged to connect at least '· electrical equipment located downstream of the connection circuit, to an: optical fiber located upstream of the connection circuit 30 and on which : are likely to travel · light signals of different wavelengths and in accordance with different optical communication standards, the connection circuit comprising a wavelength multiplexer comprising a port: upstream 35 intended to be connected to the fiber optical and a plurality of downstream ports, a plurality of optical electrical interfaces each compatible with at least one optical communication standard and each having an optical port connected to one of the downstream ports of the wavelength multiplexer and an electrical port , an electrical processing component comprising a communication port via which the electrical processing component is arranged to transmit and / or receive electrical signals, and a switch controlled by the electrical processing component and arranged to selectively connect the communication port of the electrical processing component to an electrical port of one of the optical electrical interfaces.
    the connection circuit according to the invention can be integrated into an Internet gateway and makes it possible to selectively connect the electrical equipment, which for example belongs to a local network of a subscriber, to one of the optical communication standards present on optical fiber.
    Note that the connection circuit is simple to implement, requires; a reduced number of components and is therefore inexpensive.
    An Internet gateway is also proposed comprising a connection circuit such as that which has just been described.
    A communication management method is further proposed: implemented in a connection circuit such as that just described, comprising a probing phase comprising the steps, implemented successively for each optical interface. electrical, to attempt · to detect the presence on the optical fiber of downward light signals conforming to an optical communication standard with which said interface is compatible; optical-electric, a selection phase 35 comprising the step of choosing a particular optical communication standard from a result of the sounding phase, and a selection phase comprising the step of having the switch controlled by the electrical processing component so as to connect the communication port of the electrical processing component to the electrical port of an optical electrical interface compatible with the particular optical communication standard chosen.
    We also propose; a computer program comprising instructions for implementing, by an electrical processing component of an Internet gateway, a communication management method such as that which has just been described.
    We also propose storage means', characterized in that they store a computer program comprising instructions for implementation, by an electrical component; processing of an Internet gateway, a communication management method such as that which has just been described.
    The invention will be better understood in the light of the following description of a particular non-limiting embodiment of the invention.
    BRIEF DESCRIPTION OF THE DRAWINGS
    Reference will be made to the appended drawings, among which:
    Figure · 1 shows an optical communication network 'of the prior art;
    FIG. 2 represents a connection circuit according to the invention;
    - Figure 3 shows a wavelength multiplexer;
    the figure; 4 illustrates; the operation of the wavelength multiplexer; ;
    Figure 5 shows one; electrical optical interface 35 of the connection circuit;
    FIG. 6 represents an electrical component for processing the connection circuit;
    - Figure 7 shows phases of a communication management method implemented in the connection circuit;
    - Figure 8 shows stages of a sounding phase;
    - Figure 9 shows steps of a first phase of additional survey;
    - The: Figure 10 shows the steps of a · second phase of additional survey.
    DETAILED DESCRIPTION OF THE INVENTION
    With reference to FIG. 2, the connection circuit according to the invention 10 is here integrated into an Internet gateway 11. The connection circuit · 10 is used to connect a local network of a subscriber, comprising at least one electrical equipment 12 and located downstream of the circuit; connection 10, to an optical fiber 13: located upstream of the connection circuit 10. The optical fiber 13 is 2Q -aas-si connected; to an operator network 14 located upstream of the optical fiber 13; and comprising a plurality of: equipment; OLT termination. By “upstream”, we mean here on the operator network side, and by “downstream”, we mean here on the subscriber side.
    Light signals of different wavelengths and in accordance with different optical communication standards are likely to travel over the optical fiber 13. The standards of; optical communication here includes the G-PON standard, the XG-PON standard and the XGS-PON standard.
    The connection circuit 10 firstly comprises a connector; optics 15 in which is; optical fiber 13.
    With reference to FIG. 3, the connection circuit 35 comprises; additionally a wavelength multiplexer
    16.
    The wavelength multiplexer 16 comprises an upstream port 17 connected to the optical connection · 15 and therefore to the optical fiber /, and a plurality · of downstream ports, here a first downstream port 18 and a second downstream port 19.
    The wavelength multiplexer 16 makes it possible to separate downward light signals traveling on the optical fiber 13 into downward light signals traveling on a branch T and -on a branch R. The wavelength multiplexer 16 also makes it possible to • combine rising light signals traveling on the branch T and on the branch R to obtain rising light signals traveling on the optical fiber 13.
    Here, the R branch is connected to a first intermediate fiber · 21 which is connected to the first downstream port of the wavelength multiplexer 16. The R branch carries at least the wavelengths 1310nm and 149 Ohm corresponding to the standard of G-PON optical communication. The branch T is connected to a second intermediate fiber · 22 · which is connected to the second downstream port of the wavelength multiplexer 16. The branch T carries at least the wavelengths 1270nm and 1577nm corresponding to the XGPON optical communication standard .
    The chosen component is for example the reference WMMSSHGXGPONB0 / 0 of the manufacturer OPTIWORKS, whose · characteristics · are shown on figure 4. This component allows, by internal reflection, the bidirectional passage on the branch R (which is connected to the first fiber intermediate 21) of the light signals of the G-PON system (range of reflection 12 90 to 156 ohms), with a loss of insertion limited to 0.4dB. This component also allows, by transmission, the bidirectional passage on the branch T (which is connected to the second intermediate fiber 22) of the light signals of the XG-PON system (transmission ranges 1260 to 1280nm and 1575 to 158Onm) with a loss insertion limited to 0.7dB.
    The component chosen could also be the reference WMMSAMGXGPONAOO from the manufacturer OPTIWORKS. This component 5 allows, by internal reflection, the bidirectional passage on the branch R (which would then be connected to the second intermediate fiber 22) · light signals from the XG-PON system (reflection ranges 1260 to 1280nm and 1525 to 1620nm), with an insertion loss limited to 0.4dB. This component also allows, by transmission, the bidirectional passage on the branch T (which would then be connected to the first intermediate fiber. 21) of the light signals of the G-PQN system (transmission ranges 1290 to 133Onm and 11480 to 1500nm) with an insertion loss limited to 0.7dB.
    It well -sure are other possible implementations of such a multiplexer in wavelength, subject to choose the transmission ranges and ref lection corresponding to the lengths of wave 7 to be separated.
    Θη note that the use of a conventional optical coupler cannot be envisaged because · such a coupler, which divides the light signal into several parts, introduces a significant loss not compatible: with the components used. For example, a “1 to 2” coupler introduces a loss greater than · 3dB even though the G-PON standard imposes a minimum level of reception of -27dBm at the optical connection of the terminal, and the existing receiver components have a limit of sensitivity between -28 and -29dBm.
    Likewise, the use of an optical switch which would direct all the downward light signals traveling over the optical fiber is difficult to envisage because of its cost.
    The connection circuit 10 furthermore comprises a 35 / plurality of optic s-electronic interfaces, in
    The occurrence a first optical-electrical interface 24 and a second · optical-electrical interface 25. The first optical-electrical interface 24 and the second optical-electrical interface 25 each comprise an optical port 26 and an electrical port 27 which comprises an access transmission 23 and reception access 29.
    The optical port 26 of the first optical electrical interface 24 is connected to the first downstream port 18 of the wavelength multiplexer 16 (via the first intermediate fiber 10 21), and the optical port 26 of the second optical interface -electric 25 is connected to the second downstream port 19 of the wavelength multiplexer 16 (via the second intermediate fiber 22).
    The first optical-electrical interface 24 is compatible with the G-PON standard and the second optical-electrical interface 25 is compatible with the XG-PON standard.
    With reference to FIG. 5, the first optical-electrical interface 24 will now be described, the second optical-electrical interface 25 being similar but adapted to the characteristics of the XG-PON standard.
    The first optical-electrical interface 24 comprises a laser diode 30, a photoreceptor, in this case a photodiode 31, a first matching circuit 32 and 25 a second matching circuit 33.
    The first adaptation circuit 32 receives, via the reception access 2 9 from the electrical port 21, electrical signals TXD_A corresponding to the data to be transmitted to the operator network 14 via the first intermediate fiber 21 and the optical fiber 13 The first adaptation circuit 32 (or driver) controls the laser diode 30 so that the latter produces rising light signals representative of the electrical signals TXD_A and containing the data to be transmitted. The uplink light signals have an uplink wavelength which is within a predetermined uplink wavelength range. The wavelength range; predetermined amounts is associated with the first optical-electrical interface 24 and corresponds to the characteristics 5 of the G-PON standard. Here, the rising wavelength is 1310nm.
    The photodiode 31 receives, for its part, via the optical port 26 ; , down light signals from the operator network 14 and having a down wavelength which is within a predetermined down wavelength range. The predetermined downlink wavelength range is associated with the first optical-electrical interface 24 and corresponds to the characteristics of the G-PQN standard. Here, the downlink wavelength is 1490nm.
    The photodiode 31 transforms the downward light signals into electrical signals which are shaped by the second adaptation circuit 33 to obtain electrical signals RXD_A. The electrical signals RXD_A 20 are transmitted by the second adaptation circuit 33 via the transmission access 28 of the electrical port 27 of the first optical-electrical interface 24.
    Advantageously, the second adaptation circuit 33 comprises a device for detecting the presence on the optical fiber 13 of downward light signals having a downward wavelength lying in the range of predetermined downward wavelengths associated with the first interface. optic-electric 24.
    In the case where such descending light signals have a power greater than its predetermined sensitivity threshold, the first optical electrical interface 24 produces a presence signal RXSD A significant of the presence: of said descending light signals. The presence signal RXSD_A is placed in a predefined state (for example a logic state equal to 1).
    The laser diode 30 and the photodiode 31 are integrated here, as well as other components linked to the shaping of the electrical signals and not described here, in a macro-component, for example a BOSA carrying it. reference- MB374-45-N4-GK-BW-M from the manufacturer MENTECH, or e-iïcore reference PLDM58 6-42 8 from the manufacturer ACCELINK, or any equivalent. The first matching circuit 32 and / or the second matching circuit 33 intended for signal shaping can be integrated in a reference model MO2099 from the manufacturer MACOM, or in a reference model BCM68901 from the manufacturer BROADCOM, or in any equivalent model.
    The connection circuit 10 further comprises an electrical processing component.
    The electrical processing component is here a processor 35, but could be a different component, for example a microcontroller, an FBGA, an ASIC, etc. The processor 35 is adapted to execute instructions of a program to carry out the tasks which are dedicated to it.
    The processor 35 manages the connection circuit 10.
    With reference to FIG. 6, the processor 35 comprises a communication port 36 comprising a transmission access 37 and a reception access 38, a protocol manager 40, a management module 41 and a non-volatile memory 42.
    The protocol manager · 40 is connected to the communication port 36. The protocol manager 40 implements, from instructions stored in the ; non-volatile memory 42, the protocol part corresponding to at least one optical communication standard that may be present on the screen 13.
    The gateway) Internet 11 thus relates, via the communication link 43 and thanks to the processor 35, the data needs of the subscriber with the services offered by the operator through the operator network.
    14. The communication link 43 is for example an Ethernet link.
    In particular, the protocol manager 40 produces the TXD electrical signals via the transmit port 37 of the communication port 36 and receives the RXD electrical signals via the receive port 38 of the communications port 36.
    The management module 41 receives the transmitted RXSD__A presence signal; over there; first electrical-optical interface 24 and the presence signal RXSD_B transmitted by the second electrical-optical interface ^ 25, and generates a selection signal SEL_AB.
    The connection circuit 10 also includes a switch 45.
    The switch 45 comprises; a first upstream port 46, a second upstream port 47 and a downstream port 48.
    The first upstream port 46 of the switch 45 is connected to the electrical port 27 of the first optical-electrical interface 24. The second; upstream port 47 of switch 45 is connected; to the electrical port 2Ί of the second optical-electrical interface 25. The downstream port 48 of the switch 45 is connected to the communication port 36 of the processor 35.
    The switch 45 is controlled by the processor 35 which is arranged to selectively connect the communication port 36 of the processor 35; to the electrical port; 27 of; the first optical-electrical interface 24 or to the electrical port 27 of the second optical-electrical interface 25. The control of the switch 45 is achieved by means of the Selection signal SEL_AB which is transmitted by the processor; 35 at switch 45. Switch 45 switches the electrical signals TXD__A, RXD_A, TXD_B, RXD_B (and TXD 'and RXD) which are · dice; fast electrical signals.
    When the switch 45 connects the communication port 36 of the processor 35 to the electrical port 27 of the first optical-electrical interface 24, which corresponds for example to a logic state equal to 1 of the selection signal. SEL_AB, the electrical signals TXD are directed towards the reception access 29 of the electrical port 27 of the first optical-electrical interface and therefore become the electrical signals TXD A, and the signals; electric RXD_A are directed towards; the reception access 38 of the communication port 36 of the processor 35 and therefore become the electrical signals RXD.
    When the switch 45 connects the communication port 36 of the processor 35 to the electrical port Side the second optical-electrical interface 25, which corresponds for example to a logic state equal to 0 of the selection signal SEL_AB, the electrical signals TXD are directed · towards the reception access 29 of the electrical port 27 of the second optical-electrical interface and therefore become the signals TXD_B 7 and the electrical signals RXD_B are directed towards the reception access of the communication port 36 of the processor 35 and therefore become the RXD electrical signals.
    The; characteristics of the switch 45 are selected in terms of bandwidth, to avoid degradation of the electrical signals. For example, switch 45 used for the transmission part must have a bandwidth greater than or equal to · 1.25GHz so as · not to degrade the electrical signals implemented in the uplink direction of G — PON (l, 2Gbps) and XG -PON 30 (2.5Gbp s). In; the same example, the; switch 45 used for the reception part must have a bandwidth greater than or equal to 5 GHz so as not to degrade the electrical signals; implemented in the downward direction of XG-PON (2.5Gbps) and XG-PON (lOGbps).
    For example ·, the manufacturer's reference PI3DBS12212A
    PERICOM or an equivalent model can be used to implement this function.
    Thanks to the connection circuit according to the invention 10, the Internet gateway 11 is therefore capable of communicating 5 with the operator network 14 by means of several optical communication standards on the same optical fiber 13. It is therefore necessary to correctly select the standard of optical communication that will be used.
    Generally, when subscribing to an internet subscription, a subscriber chooses a particular offer whose characteristics are known and defined (speed, optical communication standard:, data volume, services, etc.). During: time: offers can evolve and the subscriber can do
    - evolve the characteristics of his subscription.
    In the same way, an operator can, over time, make e-ôluef its infrastructure and add or replace optical communication standards on the optical fiber arriving to the home of a subscriber.
    In these two cases, · it is advantageous to implement a communication management method: enabling the use of the associated protocol in the Internet gateway 11 · the optical communication standard corresponding to the choice made between the operator and the subscriber, or using the protocol: offering the best performance if no choice has been established.
    The communication management method is implemented in: the: connection circuit 10. The communication management method is carried out when the Internet gateway 11 is powered up, or else following a restart imposed by the operator following a maintenance operation, or following an update to the Internet gateway · 11.
    The phases and steps of this communication management method are described with reference to FIGS. 7 to 10.
    With reference to FIG. 7, the communication management method firstly comprises a start-up step E1.
    Then, the communication management method includes a reading phase E2. This reading phase includes the step of verifying whether a connection rule, according to which a single optical communication standard must be used, is stored: in the non-volatile memory 42 of the processor 35.
    This connection rule may have been loaded in batches:
    the manufacture of the Internet gateway 11, or injected by the operator during a previous use: during which: the Internet gateway 11 was in communication with the operator network 14. This remote configuration operation is commonly implemented works using the standard TRQ69 protocol.
    Here, we check if only the G-PON standard should be used (step E3). If this is the case, the communication management method comprises a selection phase 20 to 4 which includes the step of causing the switch 45 to be controlled by the processor 35 so as to select · the first optical-electrical interface 24: which is compatible with the G-PON standard. The switch 45 connects the communication port 36 of the processor 35: to the electrical port 27 of the first optical-electrical interface 24.
    It is also checked whether only the XG-PON standard should be used (step E5). If this is the case, the communication management method comprises a selection phase 30 E6 which includes the step of having the switch controlled by the processor 35 so as to select the second optical-electrical interface 25 which is compatible with: the XG-PON standard. The switch 45 connects the communication port 3S of the processor 35 to the electrical port 27 of the second electrical optical interface 16 25.
    © n can make provision to let the Internet gateway choose the optical communication standard · among those possibly: present on the optical fiber 13. In this case, following the reading phase, the communication process includes a probing phase E7 intended to probe the optical fiber 13 to detect the various optical communication standards present.
    The El survey phase consists first of all in testing successively, through the various optical-electrical interfaces present in the connection circuit 10 of the Internet gateway: 11, the presence of an * optical communication standard having characteristics known.
    The optical communication standards on optical fiber are arranged in such a way that the gateway is a slave to the OLT to which it is connected *. In other words, the OLT continuously broadcasts light signals containing all of the useful data intended for all of the subscribers, as well as synchronization data and * control data *. The .Internet 11 gateway must * first * detect (RXSD presence signal) then synchronize (electrical signals: RXD) on: signals transmitted by the OLT before being able to 25 * understand and execute the operations imposed by the control . The Internet gateway 11 transmits uplink light signals *, generated from the electrical signals TXD and intended for the ILO, only when the latter requires it. Outside these periods (bursts *), the Internet gateway must: remain silent and not transmit any light signal.
    The probing phase comprises the steps, implemented * successively * for each optical * electrical interface, of detecting the presence * on the optical fiber 35 of downward light signals conforming to the optical communication standard with which said optical-electrical interface is compatible.
    Thus, with reference to FIG. 8, following a start-up step E8, the probing phase E7 comprises step 5 of reading the presence signal RXSD_A (step E9). If the presence signal RXSD_A is placed in the significant state of the presence of downward light signals conforming to the G-PON standard, the processor 35 deduces therefrom that the G-PON standard is present on the optical fiber 13 (step E10 ). Otherwise, the processor deduces that the G-PON standard is absent (step · Ell).
    Then ·, the sounding phase includes the step of reading the presence signal RXSD_B (step E12), If the: presence signal RXSD_B is placed in the significant state of the presence of downward light signals conforming to the XG- standard PON, the processor 35 deduces therefrom that the standard XG-PON is present on the optical fiber 13 (step E13). Otherwise, the processor 35 deduces therefrom that the XG-PON standard is absent (. Step E14).
    Note however that there are · different optical communication standards using light signals whose wavelengths are identical, but for which other characteristics may be different ·. For example, the Standard XG-PON and XGS-PON (extended Gigabit Symetrical Passive Optical Network ') share the same wavelengths (1270nm in the upward direction and 1577nm in the downward direction). These siandards: also share the speed and protocol characteristics in the downward direction (lOGbps), but in the upward direction, the XGS-PON standard allows a debit:
    lOGbps instead of the 2. SGbps speed allowed by the XG-PON system. In this case, the survey: should be pushed to differentiate the optical communication standards.
    5 For this purpose, after recognition: by means of the presence signal RXSD of the presence of descending light signals in a wavelength capable of supporting several optical communication standards, it may be advantageous to carry out physical recognition of the standard optical communication.
    With reference to FIG. 9, if descending light signals possibly conforming to several optical communication standards are detected, the probing phase E7 also comprises a first phase of;
    additional survey comprising the · steps ;, implemented successively · for each of said optical communication standards, to attempt to read; electrical signals representative of the downward light signals in accordance with said optical communication standard, so as to determine the correct optical communication standard to which the downward light signals conform ;.
    The first phase; of additional sounding includes a starting step El 6. Then, if the presence signal RXSD__B is placed in the significant state of the presence of a downward light signal conforming to the standard · XG-PQN, the first sounding phase complementary comprises the step of connecting the communication port 36 of the processor 37 to the electrical port 27 of the second optical-electrical interface 25; : the electrical signals RXD are routed to the second optical-electrical interface 25 (step; E17).
    Then, the management module 41 of the processor 35 requires the protocol manager 40, via internal signals 50 (visible; in FIG. 6), to apply to the electrical signals · RXD the protocol associated with the first standard of optical communication to which the descending light signals conform (step E18).
    The variable n is initialized to 1.
    The protocol manager 40 then reports to the management module 41, via the internal signals · 50, the success or failure of the recognition attempt.
    It is checked whether the electrical signals RXD are readable by the protocol of the first optical communication standard · (step · El9). If this is the case, it is detected that it is present on the optical fiber 13 (step E20). Otherwise ·, it is detected that the latter is absent (step E21).
    It is checked whether the first optical communication standard is the last standard. potentially compatible · (step E22).
    If this is the case, the first complementary survey phase ends (step E23j.
    Otherwise, the variable n is incremented (step E24) and the above steps are repeated for the second optical communication standard, the third optical communication standard, etc., up to the last optical communication standard. · Potentially compatible.
    It is also possible to attempt to establish a full connection with 1'013 using the entire protocol, after the protocol manager has successfully recognized them; synchronization and control characteristics enabling it to validate the physical presence of the optical communication standard. This makes it possible to completely check the validity of the link and of the authorizations between the Internet gateway 11 of the user and the corresponding OLT implemented by the operator.
    thus, if descending light signals possibly conforming to several optical communication standards are detected, the probing phase E7 comprises a second phase · of complementary probing comprising the steps, implemented successively for each of said optical communication standards, attempt to implement a connection, compliant · audit
    0 optical communication standard, between the processor and an OLT located upstream of the optical fiber, so as to determine the correct optical communication standard to which the downward light signals conform.
    With reference to · Figure 10, if the presence signal RXSD_B is placed in the defined significant state of the presence of a descending light signal conforming to the XG-BON standard, the second complementary sounding phase includes the step of connecting · The communication port 36 of the processor 35 to the electrical port 23 of the second optical-electrical interface 25: the electrical signals RXD and TXD are routed to the second optical-electrical interface 25 (step E25).
    Then, the management module 41 of the processor 35 requires the protocol manager 40, via internal signals 50, to apply to the electrical signals RXD the protocol associated with the first optical communication standard to which the downward light signals conform (step E26) .
    The variable n is initialized to 1.
    The protocol manager 40 then reports to the management module 41, via the internal signals 50, the success or failure of the connection attempt.
    It is checked whether a connection is made according to the protocol of the first communication standard; optical (step E27). If this is the case, it is detected that it is usable on the optical fiber 13 (step E28). Otherwise, it is detected that it is unusable (step E29).
    It is checked whether the first optical communication standard is the last potentially compatible standard (step E30).
    If this is the case, the second .. complementary sounding phase ends (step E31).
    Otherwise, the variable n is incremented (step · E32) and the above steps are repeated for the second standard of optical coinmuni ca t ion, the third third standard of optical communication, etc ... , up to the last potentially compatible optical communication standard.
    The output of the probing phase E7 therefore comprises ·, for each optical-electrical interface, information describing the presence or not of downward light signals showing the presence of at least one optical communication standard corresponding to this wavelength, possibly information giving the list of recognized optical communication standards from their synchronization and protocol signals, and possibly information giving the list of optical communication standards which have made it possible to achieve a physical connection with 1'011 operator.
    Then, again referring to FIG. 7, the communication method comprises a phase; of choice (step E35).
    From information emanating; of the survey phase ·, it is possible to make a choice.
    Eh ef fet, 1; 'ensemble; present and possibly usable optical communication standards are known.
    The native flow characteristics of each of the standards; optical communication are defined by the corresponding standards, it is therefore easy to classify the optical communication standards detected during the survey phase according to the proposed speed.
    The choice phase therefore includes the step of choosing a particular optical communication standard from the result of the sounding phase.
    Then, the communication method comprises the selection phases E4 and E6 consisting in connecting the communication port of the processor to the electrical port of the optical-electrical interface compatible with the; standard G-PON or XG-PON.
    For these selection phases., The management module 41 of the processor · 35 must route, by means of the selection signal SEL_AB, the electrical signals RXD_A or RXD_B and TXD_A or TXDQ3 from the chosen optical-electrical interface to the electrical signals · RXD and TXD of the processor. At the same time, the management module 41 must force the protocol manager 40, by means of the internal signals 50, to execute the chosen protocol, which results in the establishment of communication with the ILO.
    The switch 4) 5 is therefore controlled by the processor 35 so as to select the optical-electrical interface compatible with) the optical communication standard chosen.
    Of course, the invention is not limited to the embodiment described but encompasses any variant falling within the scope of the invention as defined by the claims.
    It has been described here that the connection circuit comprises a first optical-electrical interface 24 compatible with the G-PON optical communication standard and a second · optical-electrical interface 25 compatible with the XG-PON optical communication standard. Of course, the connection circuit could include optical-electrical interfaces; different, for example a third optical-electrical interface compatible with the standard) of XGS-PON optical communication.
    权利要求:
    Claims (8)
    [1]
    1. Connection circuit designed to connect at least one electrical equipment (12) located downstream of the
    5 connection circuit (10), to an optical fiber (13) located upstream of the connection circuit and on which are likely to route light signals of different wavelengths and in accordance with optical communication standards: different, the ; connection circuit comprising a wavelength multiplexer (16) comprising an upstream port (17) intended to be connected to the optical fiber and a plurality: of downstream ports (18, 19), a plurality of optical interfaces - electrical (24, 25) each compatible with at least one standard of
    15 optical communication and each having an optical port (26) connected to one of the downstream ports of the wavelength multiplexer and an electrical port (27), an electrical processing component (35) comprising · a communication (36) via which the electrical processing component is arranged to transmit and / or receive electrical signals (TXD, RXD), and a switch (45) controlled by the electrical processing component and arranged to selectively connect the port of communication of the electrical processing component to an electrical port 25 of one of the optical-electrical interfaces.
    [2]
    2. Connection circuit: according to claim
    1, in which each interface; optical-electric (24,
    25) is arranged to detect the presence on the optical fiber of: downward light signals having a falling wavelength within a predetermined downward wavelength range associated with said optical-electrical interface, to produce a presence signal ; (RXSD_A, RXSD_B) significant of the presence of said descending light signals, and for transmitting the presence signal to the electrical processing component.
    [3]
    3. Connection circuit according to claim 2 : f wherein the electrical processing component (35) is arranged to control · the switch (45) so; than,
    [4]
    5 'when the electrical processing component receives a presence signal from an optical electrical interface, the switch connects; the Communication port of the electrical processing component to the electrical port of said optical-electrical interface.
    4. Connection circuit according to one of the preceding claims ;, in; which them; optical-electrical interfaces include a first optical-electrical interface (24) compatible with the G-PON optical communication standard and / or a second interface;
    15 optical-electrical (25) compatible with the XG-PON optical communication standard, and / or a third interface; optical-electric compatible with the optical communication standard · XGS-PON.
    5. Connection circuit according to one of
    20 preceding claims, wherein the electrical processing component comprises a non-volatile memory (42) arranged so that a connection rule can be stored in the non-volatile memory, the electrical processing component being arranged to read;
    25 the connection rule and to control the switch (45) according to · the connection rule.
    [5]
    6. Pass rëlle; Internet (11) comprising a connection circuit (10) according to one of; previous claims.
    30
    [6]
    7. A communication management method implemented in a connection circuit according to one of claims 1 to 5, comprising a sounding phase (E7) comprising the steps, implemented successively for each optical-electrical interface (24 v 25), of
    35 try to die; detect the presence on the optical fiber; (13) of downward light signals conforming to an optical communication standard with which said optical-electrical interface is compatible, a choice phase (E35) comprising the step of choosing a particular optical communication standard: from a result of the sounding phase, and a selection phase (E4, E5) comprising the step of causing the switch to be controlled by the electrical component: processing so as to connect the communication port of the electrical processing component 10 to the port electrical of an optical electrical interface: compatible with the particular optical communication standard chosen.
    [7]
    8. Method: communication management according to claim 7, wherein, during the phase of
    15 sounding (E7), if descending light signals possibly conforming to several optical communication standards are detected, the sounding phase further comprises the steps, implemented successively for each of said sounding standards
    20 optical communication, to try to read electrical signals representative of the downward light signals: in accordance with said optical communication standard, so as to determine the correct optical communication standard to which the downward light signals conform.
    [8]
    9. A method of · managing: communication according to claim 7, in which, during the sounding phase (E7), if light signals: possibly descending signals: several standards of
    30 optical communication are detected, the probing phase further comprises the steps, implemented successively for each of said optical communication standards, of attempting to implement a connection conforming to said optical communication standard between the electrical processing component 'and termination equipment located upstream of the optical fiber, so as to determine the correct optical communication standard to which the downward light signals conform.
    5 10. A communication management method according to one of claims 7 to 9, comprising a · reading · phase (E2), prior to the phase; survey, comprising the step of verifying whether a connection rule, according to which a single optical communication standard is to be used, is stored; in a non-volatile memory (42) of the electrical processing component (35), and in which, if such a connection rule exists, the phase; of choice is to choose the single standard of; optical communication.
    11. Computer program comprising instructions for implementing, by an electrical processing component of an Internet gateway, a management and communication method according to one of claims 7 to 10.
    12. Storage means, characterized in that they store; a computer program comprising instructions for implementing, by an electrical processing component of an Internet gateway, a communication management method according to one of the claims; 7 ; â 10.
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    同族专利:
    公开号 | 公开日
    EP3614580A1|2020-02-26|
    CN110858931A|2020-03-03|
    FR3085242B1|2021-06-18|
    CA3052662A1|2020-02-22|
    EP3614580B1|2021-09-29|
    US10812881B2|2020-10-20|
    US20200068279A1|2020-02-27|
    BR102019017413A2|2020-03-10|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US20090245790A1|2008-03-31|2009-10-01|Masahiko Mizutani|Passive optical network system and operation method of the same|
    US20110103792A1|2009-10-28|2011-05-05|Hitachi, Ltd.|Passive optical network system and optical line terminal|
    US9338530B2|2010-03-16|2016-05-10|Marvell Israel Ltd.|Versatile optical network interface methods and systems|
    JP4201430B2|1999-04-16|2008-12-24|富士通株式会社|Optical subscriber line termination equipment|
    CN101616338A|2008-06-24|2009-12-30|华为技术有限公司|A kind of method, apparatus and system that data transmit in the multiple spot multi-plexing light accessing system|
    CN102255656A|2011-06-16|2011-11-23|成都新易盛通信技术有限公司|Optical network unit for passive optical network and signal processing method thereof|
    US10018799B2|2016-12-07|2018-07-10|Google Llc|Optical bridge between exterior and interior networks|FR3109683A1|2020-04-22|2021-10-29|Sagemcom Broadband Sas|PROCESS FOR ESTABLISHING COMMUNICATION IN AN OPTICAL ACCESS NETWORK|
    FR3112046A1|2020-06-24|2021-12-31|Sagemcom Broadband Sas|PROCESS FOR ESTABLISHING COMMUNICATION IN AN OPTICAL ACCESS NETWORK|
    法律状态:
    2019-07-22| PLFP| Fee payment|Year of fee payment: 2 |
    2020-02-28| PLSC| Search report ready|Effective date: 20200228 |
    2020-07-21| PLFP| Fee payment|Year of fee payment: 3 |
    2021-07-22| PLFP| Fee payment|Year of fee payment: 4 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1857602A|FR3085242B1|2018-08-22|2018-08-22|CONNECTION CIRCUIT OF A LOCAL NETWORK TO AN OPTICAL FIBER ON WHICH ARE LIKELY TO ROUTE LIGHT SIGNALS CONFORMING TO DIFFERENT OPTICAL COMMUNICATION STANDARDS|FR1857602A| FR3085242B1|2018-08-22|2018-08-22|CONNECTION CIRCUIT OF A LOCAL NETWORK TO AN OPTICAL FIBER ON WHICH ARE LIKELY TO ROUTE LIGHT SIGNALS CONFORMING TO DIFFERENT OPTICAL COMMUNICATION STANDARDS|
    EP19191111.4A| EP3614580B1|2018-08-22|2019-08-09|Connector for coupling a local network to an optical fiber capable of transporting optical signals of different communication standards|
    CN201910767251.5A| CN110858931A|2018-08-22|2019-08-20|Circuit for connecting a local network to an optical fibre|
    CA3052662A| CA3052662A1|2018-08-22|2019-08-20|Local network interconnection circuit to an optical fiber on which it is likely to transmit light signals that comply with various standards of optical communication|
    BR102019017413-7A| BR102019017413A2|2018-08-22|2019-08-21|CIRCUIT TO CONNECT A LOCAL NETWORK TO AN OPTICAL FIBER THAT CAN TRANSPORT LIGHTING SIGNS THAT MEET DIFFERENT OPTICAL COMMUNICATION STANDARDS|
    US16/548,370| US10812881B2|2018-08-22|2019-08-22|Circuit for connecting a local network to an optical fiber that might convey light signals complying with differing optical communication standards|
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