WO2017186098A1 - Channel bonding in multiple-wavelength passive optical networks (pons) - Google Patents

Channel bonding in multiple-wavelength passive optical networks (pons) Download PDF

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Publication number
WO2017186098A1
WO2017186098A1 PCT/CN2017/081885 CN2017081885W WO2017186098A1 WO 2017186098 A1 WO2017186098 A1 WO 2017186098A1 CN 2017081885 W CN2017081885 W CN 2017081885W WO 2017186098 A1 WO2017186098 A1 WO 2017186098A1
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WIPO (PCT)
Prior art keywords
channel
message
field
onu
grant
Prior art date
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PCT/CN2017/081885
Other languages
French (fr)
Inventor
Xuming WU
Yuanqiu Luo
Jianhe CAO
Original Assignee
Huawei Technologies Co., Ltd.
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Filing date
Publication date
Application filed by Huawei Technologies Co., Ltd. filed Critical Huawei Technologies Co., Ltd.
Priority to EP17788750.2A priority Critical patent/EP3443693B1/en
Priority to CN201780025903.7A priority patent/CN109075887B/en
Priority to JP2018556403A priority patent/JP6726303B2/en
Priority to KR1020187034092A priority patent/KR102284527B1/en
Publication of WO2017186098A1 publication Critical patent/WO2017186098A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J14/00—Optical multiplex systems
    • H04J14/02—Wavelength-division multiplex systems
    • H04J14/0227—Operation, administration, maintenance or provisioning [OAMP] of WDM networks, e.g. media access, routing or wavelength allocation
    • H04J14/0254—Optical medium access
    • H04J14/0256—Optical medium access at the optical channel layer
    • H04J14/0258—Wavelength identification or labelling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J14/00—Optical multiplex systems
    • H04J14/02—Wavelength-division multiplex systems
    • H04J14/0227—Operation, administration, maintenance or provisioning [OAMP] of WDM networks, e.g. media access, routing or wavelength allocation
    • H04J14/0228—Wavelength allocation for communications one-to-all, e.g. broadcasting wavelengths
    • H04J14/023—Wavelength allocation for communications one-to-all, e.g. broadcasting wavelengths in WDM passive optical networks [WDM-PON]
    • H04J14/0232—Wavelength allocation for communications one-to-all, e.g. broadcasting wavelengths in WDM passive optical networks [WDM-PON] for downstream transmission
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J14/00—Optical multiplex systems
    • H04J14/02—Wavelength-division multiplex systems
    • H04J14/0227—Operation, administration, maintenance or provisioning [OAMP] of WDM networks, e.g. media access, routing or wavelength allocation
    • H04J14/0228—Wavelength allocation for communications one-to-all, e.g. broadcasting wavelengths
    • H04J14/023—Wavelength allocation for communications one-to-all, e.g. broadcasting wavelengths in WDM passive optical networks [WDM-PON]
    • H04J14/0235—Wavelength allocation for communications one-to-all, e.g. broadcasting wavelengths in WDM passive optical networks [WDM-PON] for upstream transmission
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J14/00—Optical multiplex systems
    • H04J14/02—Wavelength-division multiplex systems
    • H04J14/0227—Operation, administration, maintenance or provisioning [OAMP] of WDM networks, e.g. media access, routing or wavelength allocation
    • H04J14/0241—Wavelength allocation for communications one-to-one, e.g. unicasting wavelengths
    • H04J14/0242—Wavelength allocation for communications one-to-one, e.g. unicasting wavelengths in WDM-PON
    • H04J14/0249—Wavelength allocation for communications one-to-one, e.g. unicasting wavelengths in WDM-PON for upstream transmission, e.g. ONU-to-OLT or ONU-to-ONU
    • H04J14/0252—Sharing one wavelength for at least a group of ONUs, e.g. for transmissions from-ONU-to-OLT or from-ONU-to-ONU
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/50—Queue scheduling
    • H04L47/62—Queue scheduling characterised by scheduling criteria
    • H04L47/625—Queue scheduling characterised by scheduling criteria for service slots or service orders
    • H04L47/6255—Queue scheduling characterised by scheduling criteria for service slots or service orders queue load conditions, e.g. longest queue first
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/70—Admission control; Resource allocation
    • H04L47/80—Actions related to the user profile or the type of traffic
    • H04L47/805—QOS or priority aware
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J14/00—Optical multiplex systems
    • H04J14/02—Wavelength-division multiplex systems
    • H04J14/0223—Conversion to or from optical TDM
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/50—Queue scheduling
    • H04L47/62—Queue scheduling characterised by scheduling criteria
    • H04L47/625—Queue scheduling characterised by scheduling criteria for service slots or service orders
    • H04L47/6275—Queue scheduling characterised by scheduling criteria for service slots or service orders based on priority

Definitions

  • a PON is one system for providing network access over the last mile, which is the final portion of a telecommunications network that delivers communication to customers.
  • a PON is a P2MP network comprising an OLT at a CO, ONUs at the user premises, and an ODN coupling the OLT to the ONUs.
  • PONs may also comprise RNs located between the OLTs and the ONUs, for instance at the end of roads where multiple customers reside.
  • NG-PONs may combine TDM and WDM to support higher capacities so that increased numbers of users can be served by a single OLT with sufficient bandwidth per user.
  • a WDM PON may be overlaid on top of a TDM PON.
  • different wavelengths may be multiplexed together to share a single feeder fiber, and each wavelength may be shared by multiple users using TDM.
  • the disclosure includes an apparatus comprising: a processor configured to: select a first channel from among a plurality of channels in a network, and generate a first message assigning a first grant corresponding to the first channel; a transmitter coupled to the processor and configured to transmit the first message; and a receiver coupled to the processor and configured to receive a second message on the first channel in response to the first message.
  • the first message is a discovery gate message comprising a channel assignment field, a grant start time field, and a channel information field, wherein the channel assignment field indicates the first channel for upstream transmission, wherein the grant start time field indicates when to transmit on the first channel, and wherein the channel information field indicates channel-related information;
  • the channel-related information is at least one of a channel rate, a channel association, or a channel priority;
  • the first message is a gate message comprising a channel assignment field and a grant start time field, wherein the channel assignment field indicates the first channel for upstream transmission, and wherein the grant start time field indicates when to transmit on the first channel;
  • the second message is a report message comprising a channel assignment field and a queue report field, wherein the channel assignment field indicates the first channel, and wherein the queue report field indicates a queue report for the first channel;
  • the processor is further configured to select a second channel from among the channels, and wherein the first message further assigns a second grant corresponding to the second channel;
  • the transmitter
  • the disclosure includes a method comprising: selecting a first channel from among a plurality of channels in a network; generating a first message assigning a first grant corresponding to the first channel; transmitting the first message; and receiving a second message on the first channel and in response to the first message.
  • the first message is a discovery gate message comprising a channel assignment field, a grant start time field, and a channel information field, wherein the channel assignment field indicates the first channel for upstream transmission, wherein the grant start time field indicates when to transmit on the first channel, and wherein the channel information field indicates channel-related information;
  • the first message is a gate message comprising a channel assignment field and a grant start time field, wherein the channel assignment field indicates the first channel for upstream transmission, and wherein the grant start time field indicates when to transmit on the first channel;
  • the second message is a report message comprising a channel assignment field and a queue report field, wherein the channel assignment field indicates the first channel, and wherein the queue report field indicates a queue report for the first channel;
  • the method further comprises selecting a second channel from among the channels, wherein the first message further assigns a second grant corresponding to the second channel;
  • an OLT implements the method, wherein the network is a PON, wherein the transmitting comprises transmitting the first message to an ONU
  • the disclosure includes an ONU comprising: a receiver configured to receive a first message assigning a first grant corresponding to a first channel selected from among a plurality of channels; a processor coupled to the receiver and configured to:process the first message, and generate a second message; and a transmitter coupled to the processor and configured to transmit the second message on the first channel and according to the first grant.
  • the first message further assigns a second grant corresponding to a second channel selected from among the channels, wherein the processor is further configured to generate a third message, and wherein the transmitter is further configured to transmit the third message on the second channel and according to the second grant;
  • the first message is a gate message comprising a channel assignment field and a grant start time field, wherein the channel assignment field indicates the first channel for upstream transmission, and wherein the grant start time field indicates when to transmit on the first channel;
  • the second message is a report message comprising a channel assignment field and a queue report field, wherein the channel assignment field indicates the first channel, and wherein the queue report field indicates a queue report for the first channel.
  • FIG. 1 is a schematic diagram of a PON.
  • FIG. 2 is a graph demonstrating an upstream channel bonding scheme.
  • FIG. 3 is a message sequence diagram illustrating registration and reporting of an ONU.
  • FIG. 4 is an extended discovery gate message according to an embodiment of the disclosure.
  • FIG. 5 is the channel assignment field in FIG. 4.
  • FIG. 6 is an extended gate message according to an embodiment of the disclosure.
  • FIG. 7 is an extended gate message according to another embodiment of the disclosure.
  • FIG. 8 is a channel assignment field according to an embodiment of the disclosure.
  • FIG. 9 is an extended report message according to an embodiment of the disclosure.
  • FIG. 10 is the channel assignment field in FIG. 9.
  • FIG. 11 is a flowchart illustrating a method of channel bonding in a multiple-wavelength PON according to an embodiment of the disclosure.
  • FIG. 12 is a schematic diagram of a device according to an embodiment of the disclosure.
  • ASIC application-specific integrated circuit
  • CPU central processing unit
  • DSP digital signal processor
  • FCS frame check sequence
  • G, Gb/s gigabit (s) per second
  • ODN optical distribution network
  • OLT optical line terminal
  • ONT optical network terminal
  • PON passive optical network
  • RAM random-access memory
  • ROM read-only memory
  • TCAM ternary content-addressable memory
  • TDM time-division multiplexing
  • TWDM time-and wavelength-division multiplexing
  • WDM wavelength-division multiplexing
  • FIG. 1 is a schematic diagram of a PON 100.
  • the PON 100 comprises an OLT 110, a plurality of ONUs 120, and an ODN 130 that couples the OLT 110 to the ONUs 120.
  • the PON 100 is a communications network that may not require active components to distribute data between the OLT 110 and the ONUs 120. Instead, the PON 100 may use passive optical components in the ODN 130 to distribute data between the OLT 110 and the ONUs 120.
  • the OLT 110 communicates with the ONUs 120 and another network.
  • the OLT 110 is an intermediary between the other network and the ONUs 120.
  • the OLT 110 forwards data received from the other network to the ONUs 120 and forwards data received from the ONUs 120 to the other network.
  • the OLT 110 comprises a transmitter and a receiver.
  • the OLT 110 comprises a converter that converts the network protocol to the PON protocol and vice versa.
  • the OLT 110 is typically located at a central location such as a CO, but it may also be located at other suitable locations.
  • the ODN 130 is a data distribution system that comprises optical fiber cables, couplers, splitters, distributors, and other suitable components.
  • the components include passive optical components that do not require power to distribute signals between the OLT 110 and the ONUs 120. Alternatively, the components include active components such as optical amplifiers that do require power.
  • the ODN 130 extends from the OLT 110 to the ONUs 120 in a branching configuration as shown, but the ODN 130 may be configured in any other suitable P2MP configuration.
  • the ONUs 120 communicate with the OLT 110 and customers and act as intermediaries between the OLT 110 and the customers. For instance, the ONUs 120 forward data from the OLT 110 to the customers and forward data from the customers to the OLT 110.
  • the ONUs 120 comprise optical transmitters that convert electrical signals into optical signals and transmit the optical signals to the OLT 110, and the ONUs 120 comprise optical receivers that receive optical signals from the OLT 110 and convert the optical signals into electrical signals.
  • the ONUs 120 further comprise second transmitters that transmit the electrical signals to the customers and second receivers that receive electrical signals from the customers.
  • ONUs 120 and ONTs are similar, and the terms may be used interchangeably.
  • the ONUs 120 are typically located at distributed locations such as customer premises, but they may also be located at other suitable locations.
  • IEEE P802.3ca 100G-EPON Task Force is tasked with defining physical layer specifications and management parameters for 25G, 50G, and 100G multiple-wavelength PONs.
  • Such PONs support channel bonding, which refers to the OLT 110 assigning multiple channels to an ONU 120 to use at the same time and refers to an ONU 120 using multiple channels at the same time.
  • the ONU 120 may perform channel-bonded reception in a downstream direction from the OLT 110 to the ONU 120, or channel-bonded transmission in an upstream direction from the ONU 120 to the OLT 110.
  • each channel, or lane corresponds to a different wavelength and provides up to a 25G data rate.
  • an ONU 120 transmits and receives using one channel to achieve a 25G data rate, the ONU 120 transmits and receives using two channels to achieve a 50G data rate, the ONU 120 transmits and receives using three channels to achieve a 75G data rate, and the ONU 120 transmits and receives using four channels to achieve a 100G data rate.
  • FIG. 2 is a graph 200 demonstrating an upstream channel bonding scheme.
  • the x-axis represents time in constant units, and the y-axis represents channels in constant units.
  • the PON 100 employs the upstream channel bonding scheme.
  • the PON 100 comprises seven ONUs 120 denoted as ONU 1-ONU 7.
  • the upstream channel bonding scheme uses channels 0-3 corresponding to wavelengths ā‡ 0 - ā‡ 4 . Each channel provides a 25G data rate.
  • ONU 1 transmits using channel 3
  • ONU 2 transmits using both channel 0 and channel 2
  • ONU 3 transmits using channel 1.
  • ONU 2 transmits using both channel 0 and channel 2
  • ONU 3 transmits using channel 1
  • ONU 6 transmits using channel 3.
  • ONU 2 transmits using both channel 0 and channel 2
  • ONU 6 transmits using channel 3
  • ONU 7 transmits using channel 1.
  • ONU 5 transmits using channels 0-3.
  • a discovery gate message is extended to include a channel assignment field, or lane flag field, for the OLT 110 to grant upstream channels to the ONUs 120 for discovery.
  • a gate message is extended to include a channel assignment field for the OLT 110 to grant upstream channels to the ONUs 120 for normal operation.
  • normal operation refers to operation other than during discovery. For instance, normal operation comprises communication of user data that is to be communicated beyond the PON 100 and to a larger network.
  • a report message is extended to include a channel assignment field for the ONUs 120 to report queue statuses of channels to the OLT 110.
  • channels are discussed as being associated with wavelengths, channels may be associated with other concepts.
  • upstream channel bonding is discussed, the same principles apply to downstream channel bonding.
  • extended IEEE MPCP messages are discussed, the same principles apply to other types of extended messages or new messages.
  • FIG. 3 is a message sequence diagram 300 illustrating registration and reporting of an ONU 120.
  • the OLT 110 transmits to the ONUs 120 a discovery gate message granting transmission windows for discovery.
  • an ONU 120 transmits to the OLT 110 a register request message requesting registration in the PON 100 and indicating capabilities of the ONU 120.
  • the OLT 110 transmits to the ONU 120 a register message instructing the ONU 120 to register and assigning IDs to the ONU 120.
  • the OLT 110 transmits to the ONU 120 a gate message to grant transmission windows for the ONU 120 to transmit a register acknowledgment message.
  • the ONU 120 transmits to the OLT 110 a register acknowledgment message acknowledging the register message and echoing the IDs. By completing step 350, the ONU 120 completes registration and enters normal operation.
  • the OLT 110 transmits to the ONU 120 a gate message instructing the ONU 120 to grant transmission windows for normal transmission.
  • the ONU 120 transmits to the OLT 110 a report message indicating queue statuses.
  • the messages are described in IEEE 802.3-2012, Section 5, 2012 ( ā€œ802.3-2012ā€ ) , which is incorporated by reference.
  • the discovery gate message at step 310; the gate message at steps 340, 360; and the report message at step 370 are extended as described further below.
  • FIG. 4 is an extended discovery gate message 400 according to an embodiment of the disclosure.
  • the extended discovery gate message 400 implements the discovery gate message in step 310 in FIG. 3.
  • the OLT 110 transmits the extended discovery gate message 400 to the ONU 120 to grant transmission windows in multiple channels for discovery.
  • the extended discovery gate message 400 comprises a destination address field 405, a source address field 410, a length/type field 415, an opcode field 420, a timestamp field 425, a channel assignment field 430, a number of grants/flags field 435, a grant #1 start time field 440, a grant #1 length field 445, a sync time field 450, a discovery information field 455, a channel information field 460, a pad/reserved field 465, and an FCS field 470.
  • the channel assignment field 430 may be a bitmap and indicates a channel, for instance channel 1 corresponding to wavelength ā‡ 1 , for the ONU 120 to transmit on during discovery.
  • the channel assignment field 430 is described further below.
  • the grant #1 start time field 440 indicates when the ONU 120 can transmit a first signal on the channel indicated in the channel assignment field 430
  • the grant #1 length field 445 indicates how long the ONU 120 can transmit the first signal on the channel indicated in the channel assignment field 430.
  • the channel information field 460 indicates channel-related information of the channel indicated in the channel assignment field 430.
  • the channel-related information is a channel rate, a channel association, a channel priority, or other suitable information.
  • the OLT 110 may transmit the extended discovery gate message 400 to the ONU 120 whether or not the ONU 120 is capable of channel bonding. If the OLT 110 determines that it should assign multiple channels to the ONU 120 for discovery, then the channel assignment field 430 indicates multiple channels. Alternatively, if the OLT 110 determines that it should assign multiple channels to the ONU 120 for discovery, then the channel assignment field 430 indicates one channel and the OLT 110 transmits the extended discovery gate message 400 to the ONU 120 for each channel.
  • FIG. 5 is the channel assignment field 430 in FIG. 4.
  • the channel assignment field 430 comprises bit 0 corresponding to channel 0, bit 1 corresponding to channel 1, bit 2 corresponding to channel 2, bit 3 corresponding to channel 3, and bits 4-7 that are reserved. For each of bits 0-3, a binary 0 indicates that the corresponding channel is not for discovery and a binary 1 indicates that the corresponding channel is for discovery. Bits 4-7 may be padded with 0s or 1s. For example, when bits 0-7 are equal to 00000100, channels 0-1 and 3 are not for discovery and channel 2 is for discovery.
  • FIG. 6 is an extended gate message 600 according to an embodiment of the disclosure.
  • the extended gate message 600 implements the gate message in steps 340, 360 in FIG. 3.
  • the OLT 110 transmits the extended gate message 600 to the ONU 120 to grant transmission windows in multiple channels for normal operation.
  • the extended gate message 600 comprises a destination address field 605, a source address field 610, a length/type field 615, an opcode field 620, a timestamp field 625, a channel assignment field 630, a number of grants/flags field 635, a grant #1 start time field 640, a grant #1 length field 645, a grant #2 start time field 650, a grant #2 length field 655, a grant #3 start time field 660, a grant #3 length field 665, a grant #4 start time field 670, a grant #4 length field 675, a pad/reserved field 680, and an FCS field 685.
  • the channel assignment field 630 may be a bitmap and indicates a channel, for instance channel 1 corresponding to wavelength ā‡ 1 , for the ONU 120 to transmit on during normal operation.
  • the channel assignment field 630 is described further below.
  • the grant #1 start time field 640 indicates when the ONU 120 can transmit a first signal on the channel indicated in the channel assignment field 630
  • the grant #1 length field 645 indicates how long the ONU 120 can transmit the first signal on the channel indicated in the channel assignment field 630.
  • the grant #2 start time field 650 and the grant #2 length field 655 are similar for a second signal
  • the grant #3 start time field 660 and the grant #3 length field 665 are similar for a third signal
  • the grant #4 start time field 670 and the grant #4 length field 675 are similar for a fourth signal.
  • the OLT 110 may transmit the extended gate message 600 to the ONU 120 whether or not the ONU 120 is capable of channel bonding. If the OLT 110 determines that it should assign multiple channels to the ONU 120 for normal operation, then the channel assignment field 630 indicates multiple channels. Alternatively, if the OLT 110 determines that it should assign multiple channels to the ONU 120 for normal operation, then the channel assignment field 630 indicates one channel and the OLT 110 transmits the extended gate message 600 to the ONU 120 for each channel.
  • FIG. 7 is an extended gate message 700 according to another embodiment of the disclosure.
  • the extended gate message 700 is similar to the extended gate message 600 in FIG. 6.
  • the extended gate message 700 comprises a destination address field 703, a source address field 705, a length/type field 707, an opcode field 710, a timestamp field 713, a number of grants/flags field 715, a grant #1 start time field 720, a grant #1 length field 723, a grant #2 start time field 727, a grant #2 length field 730, a grant #3 start time field 735, a grant #3 length field 737, a grant #4 start time field 743, a grant #4 length field 745, a pad/reserved field 747, and an FCS field 750.
  • the extended gate message 700 comprises a channel assignment field for each grant. Specifically, the extended gate message 700 comprises a channel assignment #1 field 717, a channel assignment #2 field 725, a channel assignment #3 field 733, and a channel assignment #4 field 740.
  • FIG. 8 is a channel assignment field 800 according to an embodiment of the disclosure.
  • the channel assignment field 800 implements the channel assignment field 630 in FIG. 6 and the channel assignment #1 field 717, the channel assignment #2 field 725, the channel assignment #3 field 733, and the channel assignment #4 field 740 in FIG. 7.
  • the channel assignment field 800 comprises bit 0 corresponding to channel 0, bit 1 corresponding to channel 1, bit 2 corresponding to channel 2, bit 3 corresponding to channel 3, and bits 4-7 that are reserved. For each of bits 0-3, a binary 0 indicates that the succeeding grant is not for the corresponding channel and a binary 1 indicates that the succeeding grant is for the corresponding channel.
  • Bits 4-7 may be padded with 0s or 1s. For example, when bits 0-7 are equal to 00000010, the grant is not for channels 0 and 2-3, but is for channel 1.
  • FIG. 9 is an extended report message 900 according to an embodiment of the disclosure.
  • the extended report message 900 implements the report message in step 370 in FIG. 3.
  • the ONU 120 transmits the extended report message 900 to the OLT 110 to report queue statuses.
  • the extended report message 900 comprises a destination address field 905, a source address field 910, a length/type field 915, an opcode field 920, a timestamp field 925, a number of queue sets field 930, a channel assignment field 935, a report bitmap field 940, a queue #0 report field 945, a queue #1 report field 950, a queue #2 report field 955, a queue #3 report field 960, a queue #4 report field 965, a queue #5 report field 970, a queue #6 report field 975, a queue #7 report field 980, a pad/reserved field 985, and an FCS field 990.
  • the channel assignment field 935 may be a bitmap and indicates a channel, for instance channel 1 corresponding to wavelength ā‡ 1 , for which the ONU 120 is reporting queue statuses.
  • the channel assignment field 935 is described further below.
  • the queue #0 report field 945, the queue #1 report field 950, the queue #2 report field 955, the queue #3 report field 960, the queue #4 report field 965, the queue #5 report field 970, the queue #6 report field 975, and the queue #7 report field 980 indicate successive queue reports for the channel indicated in the channel assignment field 935.
  • the ONU 120 may transmit the extended report message 900 to the OLT 110 whether or not the ONU 120 is capable of channel bonding. If the ONU 120 is using multiple channels, then the extended report message 900 comprises a set of a channel assignment field and a queue report field for each channel. Alternatively, if the ONU 120 is using multiple channels, then the channel assignment field 935 indicates one channel and the ONU 120 transmits the extended report message 900 to the OLT 110 for each channel.
  • FIG. 10 is the channel assignment field 935 in FIG. 9.
  • the channel assignment field 935 comprises bit 0 corresponding to channel 0, bit 1 corresponding to channel 1, bit 2 corresponding to channel 2, bit 3 corresponding to channel 3, and bits 4-7 that are reserved. For each of bits 0-3, a binary 0 indicates that the succeeding queue reports are not for the corresponding channel and a binary 1 indicates that the succeeding queue reports are for the corresponding channel. Bits 4-7 may be padded with 0s or 1s. For example, when bits 0-7 are equal to 00000010, the grant is not for channels 0 and 2-3, but is for channel 1.
  • the OLT 110 and the ONUs 120 may implement channel bonding.
  • the OLT 110 assigns grants to the ONUs 120 in at least three different manners. In a first manner, the OLT 110 selects a channel, for instance channel 0, as a control channel and communicates control information such as the extended discovery gate message 400, the extended gate message 600, and the extended gate message 700 on channel 0. Thus, if the OLT 110 desires to assign grants to an ONU 120 for both channel 0 and channel 2, then the OLT 110 does so by transmitting the extended discovery gate message 400, the extended gate message 600, or the extended gate message 700 on channel 0.
  • the OLT 110 transmits the extended discovery gate message 400, the extended gate message 600, and the extended gate message 700 to the ONU 120 on all channels.
  • the OLT 110 treats all channels equally and duplicates the extended discovery gate message 400, the extended gate message 600, and the extended gate message 700.
  • the OLT 110 transmits the extended discovery gate message 400, the extended gate message 600, and the extended gate message 700 to the ONU 120 on the channel that the OLT 110 assigns the grants to.
  • the OLT 110 and the ONUs 120 may implement power conservation in the ONUs 120.
  • traffic is light
  • an ONU 120 enters a power-saving mode.
  • the ONU 120 periodically transmits the extended report message 900 to the OLT 110 on one channel, for instance channel 1, to indicate that the other channels, for instance channels 0 and 2-3, are in a power-saving mode.
  • the ONU 120 sets a value of the channel assignment field 935 to 0000010 and sets values of the queue #1 report field 950, the queue #2 report field 955, the queue #3 report field 960, the queue #4 report field 965, the queue #5 report field 970, the queue #6 report field 975, and the queue #7 report field 980 to 0.
  • the OLT 110 may desire to disable transceivers or transmitters of the ONU 120, keep alive the ONU 120, or wake up the ONU 120. If the OLT 110 desires to disable transceivers or transmitters of the ONU 120, then the OLT 110 may do so using the extended discovery gate message 400, the extended gate message 600, or the extended gate message 700.
  • the discovery gate message 400 may instruct the ONU 120 to disable all transceivers or transmitters except a transceiver or transmitter corresponding to a channel indicated in the channel assignment field 430.
  • the extended gate message 600 may instruct the ONU 120 to disable all transceivers or transmitters except a transceiver or transmitter corresponding to a channel indicated in the channel assignment field 630.
  • the extended gate message 700 may instruct the ONU 120 to disable all transceivers or transmitters except transceivers or transmitters corresponding to channels indicated in the channel assignment field #1 field 717, the channel assignment #2 field 725, the channel assignment #3 field 733, and the channel assignment #4 field 740.
  • the OLT 110 desires to keep alive the ONU 120, then the OLT 110 periodically transmits to the ONU 120 the extended gate message 600, the extended gate message 700, or another suitable message with a first format. For instance, for the extended gate message 600, the OLT 110 sets a value of the channel assignment field 630 to all 1s and a value of the number of grants/flags field 635 to 0. For the extended gate message 700, the OLT 110 sets a value of the number of grants/flags field 715 to 0 and sets a value of the channel assignment #1 field 717, the channel assignment #2 field 725, the channel assignment #3 field 733, and the channel assignment #4 field 740 to all 1s.
  • the OLT 110 desires to wake up the ONU 120, then the OLT 110 transmits to the ONU 120 the extended gate message 600, the extended gate message 700, or another suitable message with a second format. For instance, for the extended gate message 600, the OLT 110 sets a value of the channel assignment field 630 to 0000010 and a value of the number of grants/flags field 635 to 1. For the extended gate message 700, the OLT 110 sets a value of the number of grants/flags field 715 to 1 and sets a value of the channel assignment #1 field 717, the channel assignment #2 field 725, the channel assignment #3 field 733, and the channel assignment #4 field 740 to 0000010.
  • FIG. 11 is a flowchart illustrating a method 1100 of channel bonding in a multiple-wavelength PON according to an embodiment of the disclosure.
  • the OLT 110 performs the method 1100.
  • a first channel is selected from among a plurality of channels in a network. For instance, the OLT 110 selects channel 1 from among channels 0-3 in the PON 100.
  • a first message assigning a first grant corresponding to a first channel is generated. For instance, the OLT 110 generates the extended discovery gate message 400, the extended gate message 600, or the extended gate message 700.
  • the first message is transmitted.
  • the OLT 110 transmits the extended discovery gate message 400, the extended gate message 600, or the extended gate message 700 to an ONU 120.
  • a second message is received on the first channel and in response to the first message.
  • the OLT 110 receives a second message from the ONU 120 on channel 1.
  • the second message may be the extended report message 900.
  • FIG. 12 is a schematic diagram of a device 1200 according to an embodiment of the disclosure.
  • the device 1200 may implement the disclosed embodiments.
  • the device 1200 comprises ingress ports 1210 and an RX 1220 coupled to the ingress ports 1210 for receiving data; a processor, logic unit, or CPU 1230 coupled to the RX 1220 to process the data; a TX 1240 coupled to the processor 1230 and egress ports 1250 coupled to the TX 1240 for transmitting the data.
  • a memory 1260 is coupled to the processor 1230 for storing the data.
  • the device 1200 may also comprise OE components and EO components coupled to the ingress ports 1210, the RX 1220, the TX 1240, and the egress ports 1250 for ingress or egress of optical or electrical signals.
  • the processor 1230 is any suitable combination of hardware, middleware, firmware, or software.
  • the processor 1230 comprises any combination of one or more CPU chips, cores, FPGAs, ASICs, or DSPs.
  • the processor 1230 communicates with the ingress ports 1210, RX 1220, TX 1240, egress ports 1250, and memory 1260.
  • the processor 1230 comprises a channel bonding component 1270, which implements the disclosed embodiments. The inclusion of the channel bonding component 1270 therefore provides a substantial improvement to the functionality of the device 1200 and effects a transformation of the device 1200 to a different state.
  • the memory 1260 stores the channel bonding component 1270 as instructions, and the processor 1230 executes those instructions.
  • the memory 1260 comprises one or more disks, tape drives, or solid-state drives.
  • the device 1200 may use the memory 1260 as an over-flow data storage device to store programs when the device 1200 selects those programs for execution and to store instructions and data that the device 1200 reads during execution of those programs.
  • the memory 1260 may be volatile or non-volatile and may be any combination of ROM, RAM, TCAM, or SRAM.
  • the device 1200 includes a channel selection module selecting a first channel from among a plurality of channels in a network, a message generation module generating a first message assigning a first grant corresponding to the first channel, a transmission module transmitting the first message, and a second message reception module receiving a second message on the first channel and in response to the first message.
  • the device 1200 may include other or additional modules for performing any one of or combination of steps described in the embodiments. Further, any of the additional or alternative embodiments or aspects of the method, as shown in any of the figures or recited in any of the claims, are also contemplated to include similar modules.
  • an apparatus comprises: a processor element configured to:select a first channel from among a plurality of channels in a network, and generate a first message assigning a first grant corresponding to the first channel; a transmitter element coupled to the processor element and configured to transmit the first message; and a receiver element coupled to the processor element and configured to receive a second message on the first channel and in response to the first message.
  • a first component is directly coupled to a second component when there are no intervening components, except for a line, a trace, or another medium between the first component and the second component.
  • the first component is indirectly coupled to the second component when there are intervening components other than a line, a trace, or another medium between the first component and the second component.
  • the term ā€œcoupledā€ and its variants include both directly coupled and indirectly coupled. The use of the term ā€œaboutā€ means a range including ā‡ 10%of the subsequent number unless otherwise stated.

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Abstract

An apparatus comprises: a processor configured to: select a first channel from among a plurality of channels in a network, and generate a first message assigning a first grant corresponding to the first channel; a transmitter coupled to the processor and configured to transmit the first message; and a receiver coupled to the processor and configured to receive a second message on the first channel and in response to the first message. A method comprises: selecting a first channel from among a plurality of channels in a network; generating a first message assigning a first grant corresponding to the first channel; transmitting the first message; and receiving a second message on the first channel in response to the first message

Description

CHANNELĀ BONDINGĀ INĀ MULTIPLE-WAVELENGTHĀ PASSIVEĀ OPTICALĀ NETWORKSĀ (PONS)
CROSS-REFERENCEĀ TOĀ RELATEDĀ APPLICATIONS
ThisĀ applicationĀ claimsĀ priorityĀ toĀ U.S.Ā non-provisionalĀ patentĀ applicationĀ SerialĀ No.Ā 15/493,824,Ā filedĀ onĀ AprilĀ 21,Ā 2017,Ā andĀ entitledĀ ā€œChannelĀ BondingĀ inĀ Multiple-WavelengthĀ PassiveĀ OpticalĀ NetworksĀ (PONs)Ā ā€Ā ,Ā whichĀ inĀ turnĀ claimsĀ priorityĀ toĀ andĀ benefitĀ ofĀ UnitedĀ StatesĀ provisionalĀ patentĀ applicationĀ numberĀ 62/329,011Ā filedĀ onĀ AprilĀ 28,Ā 2016Ā byĀ FutureweiĀ Technologies,Ā Inc.Ā andĀ titledĀ ā€œGrantingĀ MechanismsĀ ForĀ Multi-LaneĀ PassiveĀ OpticalĀ NetworksĀ (PONs)Ā ,Ā ā€Ā whichĀ isĀ incorporatedĀ byĀ reference.
BACKGROUND
AĀ PONĀ isĀ oneĀ systemĀ forĀ providingĀ networkĀ accessĀ overĀ theĀ lastĀ mile,Ā whichĀ isĀ theĀ finalĀ portionĀ ofĀ aĀ telecommunicationsĀ networkĀ thatĀ deliversĀ communicationĀ toĀ customers.Ā AĀ PONĀ isĀ aĀ P2MPĀ networkĀ comprisingĀ anĀ OLTĀ atĀ aĀ CO,Ā ONUsĀ atĀ theĀ userĀ premises,Ā andĀ anĀ ODNĀ couplingĀ theĀ OLTĀ toĀ theĀ ONUs.Ā PONsĀ mayĀ alsoĀ compriseĀ RNsĀ locatedĀ betweenĀ theĀ OLTsĀ andĀ theĀ ONUs,Ā forĀ instanceĀ atĀ theĀ endĀ ofĀ roadsĀ whereĀ multipleĀ customersĀ reside.
NG-PONsĀ mayĀ combineĀ TDMĀ andĀ WDMĀ toĀ supportĀ higherĀ capacitiesĀ soĀ thatĀ increasedĀ numbersĀ ofĀ usersĀ canĀ beĀ servedĀ byĀ aĀ singleĀ OLTĀ withĀ sufficientĀ bandwidthĀ perĀ user.Ā InĀ suchĀ aĀ TWDMĀ PON,Ā aĀ WDMĀ PONĀ mayĀ beĀ overlaidĀ onĀ topĀ ofĀ aĀ TDMĀ PON.Ā InĀ otherĀ words,Ā differentĀ wavelengthsĀ mayĀ beĀ multiplexedĀ togetherĀ toĀ shareĀ aĀ singleĀ feederĀ fiber,Ā andĀ eachĀ wavelengthĀ mayĀ beĀ sharedĀ byĀ multipleĀ usersĀ usingĀ TDM.
SUMMARY
InĀ oneĀ embodiment,Ā theĀ disclosureĀ includesĀ anĀ apparatusĀ comprising:Ā aĀ processorĀ configuredĀ to:Ā selectĀ aĀ firstĀ channelĀ fromĀ amongĀ aĀ pluralityĀ ofĀ channelsĀ inĀ aĀ network,Ā andĀ generateĀ aĀ firstĀ messageĀ assigningĀ aĀ firstĀ grantĀ correspondingĀ toĀ theĀ firstĀ channelļ¼›Ā aĀ transmitterĀ coupledĀ toĀ theĀ processorĀ andĀ configuredĀ toĀ transmitĀ theĀ firstĀ messageļ¼›Ā andĀ aĀ receiverĀ coupledĀ toĀ theĀ processorĀ andĀ configuredĀ toĀ receiveĀ aĀ secondĀ messageĀ onĀ theĀ firstĀ channelĀ inĀ responseĀ toĀ theĀ firstĀ message.Ā InĀ someĀ embodiments,Ā whereinĀ theĀ firstĀ messageĀ isĀ aĀ discoveryĀ gateĀ messageĀ comprisingĀ aĀ channelĀ assignmentĀ field,Ā aĀ grantĀ startĀ timeĀ field,Ā andĀ aĀ channelĀ informationĀ field,Ā  whereinĀ theĀ channelĀ assignmentĀ fieldĀ indicatesĀ theĀ firstĀ channelĀ forĀ upstreamĀ transmission,Ā whereinĀ theĀ grantĀ startĀ timeĀ fieldĀ indicatesĀ whenĀ toĀ transmitĀ onĀ theĀ firstĀ channel,Ā andĀ whereinĀ theĀ channelĀ informationĀ fieldĀ indicatesĀ channel-relatedĀ informationļ¼›Ā theĀ channel-relatedĀ informationĀ isĀ atĀ leastĀ oneĀ ofĀ aĀ channelĀ rate,Ā aĀ channelĀ association,Ā orĀ aĀ channelĀ priorityļ¼›Ā theĀ firstĀ messageĀ isĀ aĀ gateĀ messageĀ comprisingĀ aĀ channelĀ assignmentĀ fieldĀ andĀ aĀ grantĀ startĀ timeĀ field,Ā whereinĀ theĀ channelĀ assignmentĀ fieldĀ indicatesĀ theĀ firstĀ channelĀ forĀ upstreamĀ transmission,Ā andĀ whereinĀ theĀ grantĀ startĀ timeĀ fieldĀ indicatesĀ whenĀ toĀ transmitĀ onĀ theĀ firstĀ channelļ¼›Ā theĀ secondĀ messageĀ isĀ aĀ reportĀ messageĀ comprisingĀ aĀ channelĀ assignmentĀ fieldĀ andĀ aĀ queueĀ reportĀ field,Ā whereinĀ theĀ channelĀ assignmentĀ fieldĀ indicatesĀ theĀ firstĀ channel,Ā andĀ whereinĀ theĀ queueĀ reportĀ fieldĀ indicatesĀ aĀ queueĀ reportĀ forĀ theĀ firstĀ channelļ¼›Ā theĀ processorĀ isĀ furtherĀ configuredĀ toĀ selectĀ aĀ secondĀ channelĀ fromĀ amongĀ theĀ channels,Ā andĀ whereinĀ theĀ firstĀ messageĀ furtherĀ assignsĀ aĀ secondĀ grantĀ correspondingĀ toĀ theĀ secondĀ channelļ¼›Ā theĀ transmitterĀ isĀ furtherĀ configuredĀ toĀ transmitĀ theĀ firstĀ messageĀ onĀ theĀ firstĀ channelļ¼›Ā theĀ transmitterĀ isĀ furtherĀ configuredĀ toĀ transmitĀ theĀ firstĀ messageĀ onĀ aĀ secondĀ channelĀ fromĀ amongĀ theĀ channelsļ¼›Ā theĀ apparatusĀ isĀ anĀ OLT,Ā andĀ whereinĀ theĀ networkĀ isĀ aĀ PONļ¼›Ā theĀ transmitterĀ isĀ furtherĀ configuredĀ toĀ furtherĀ transmitĀ theĀ firstĀ messageĀ toĀ anĀ ONUĀ comprisingĀ aĀ pluralityĀ ofĀ ONUĀ transmitters,Ā whereinĀ theĀ ONUĀ transmittersĀ compriseĀ aĀ firstĀ transmitterĀ correspondingĀ toĀ theĀ firstĀ channel,Ā andĀ whereinĀ theĀ firstĀ messageĀ instructsĀ theĀ ONUĀ toĀ disableĀ allĀ ofĀ theĀ ONUĀ transmittersĀ exceptĀ forĀ theĀ firstĀ transmitter.
InĀ anotherĀ embodiment,Ā theĀ disclosureĀ includesĀ aĀ methodĀ comprising:Ā selectingĀ aĀ firstĀ channelĀ fromĀ amongĀ aĀ pluralityĀ ofĀ channelsĀ inĀ aĀ networkļ¼›Ā generatingĀ aĀ firstĀ messageĀ assigningĀ aĀ firstĀ grantĀ correspondingĀ toĀ theĀ firstĀ channelļ¼›Ā transmittingĀ theĀ firstĀ messageļ¼›Ā andĀ receivingĀ aĀ secondĀ messageĀ onĀ theĀ firstĀ channelĀ andĀ inĀ responseĀ toĀ theĀ firstĀ message.Ā InĀ someĀ embodiments,Ā theĀ firstĀ messageĀ isĀ aĀ discoveryĀ gateĀ messageĀ comprisingĀ aĀ channelĀ assignmentĀ field,Ā aĀ grantĀ startĀ timeĀ field,Ā andĀ aĀ channelĀ informationĀ field,Ā whereinĀ theĀ channelĀ assignmentĀ fieldĀ indicatesĀ theĀ firstĀ channelĀ forĀ upstreamĀ transmission,Ā whereinĀ theĀ grantĀ startĀ timeĀ fieldĀ indicatesĀ whenĀ toĀ transmitĀ onĀ theĀ firstĀ channel,Ā andĀ whereinĀ theĀ channelĀ informationĀ fieldĀ indicatesĀ channel-relatedĀ informationļ¼›Ā theĀ firstĀ messageĀ isĀ aĀ gateĀ messageĀ comprisingĀ aĀ channelĀ assignmentĀ fieldĀ andĀ aĀ grantĀ startĀ timeĀ field,Ā whereinĀ theĀ channelĀ assignmentĀ fieldĀ indicatesĀ theĀ firstĀ channelĀ forĀ upstreamĀ transmission,Ā andĀ whereinĀ theĀ grantĀ startĀ timeĀ fieldĀ indicatesĀ whenĀ toĀ transmitĀ onĀ theĀ firstĀ channelļ¼›Ā theĀ secondĀ messageĀ isĀ aĀ reportĀ messageĀ comprisingĀ aĀ channelĀ assignmentĀ fieldĀ andĀ aĀ queueĀ reportĀ field,Ā whereinĀ theĀ channelĀ assignmentĀ fieldĀ indicatesĀ theĀ firstĀ channel,Ā andĀ  whereinĀ theĀ queueĀ reportĀ fieldĀ indicatesĀ aĀ queueĀ reportĀ forĀ theĀ firstĀ channelļ¼›Ā theĀ methodĀ furtherĀ comprisesĀ selectingĀ aĀ secondĀ channelĀ fromĀ amongĀ theĀ channels,Ā whereinĀ theĀ firstĀ messageĀ furtherĀ assignsĀ aĀ secondĀ grantĀ correspondingĀ toĀ theĀ secondĀ channelļ¼›Ā anĀ OLTĀ implementsĀ theĀ method,Ā whereinĀ theĀ networkĀ isĀ aĀ PON,Ā whereinĀ theĀ transmittingĀ comprisesĀ transmittingĀ theĀ firstĀ messageĀ toĀ anĀ ONUĀ comprisingĀ aĀ pluralityĀ ofĀ ONUĀ transmitters,Ā whereinĀ theĀ ONUĀ transmittersĀ compriseĀ aĀ firstĀ transmitterĀ correspondingĀ toĀ theĀ firstĀ channel,Ā andĀ whereinĀ theĀ firstĀ messageĀ instructsĀ theĀ ONUĀ toĀ disableĀ allĀ ofĀ theĀ ONUĀ transmittersĀ exceptĀ forĀ theĀ firstĀ transmitter.
InĀ yetĀ anotherĀ embodiment,Ā theĀ disclosureĀ includesĀ anĀ ONUĀ comprising:Ā aĀ receiverĀ configuredĀ toĀ receiveĀ aĀ firstĀ messageĀ assigningĀ aĀ firstĀ grantĀ correspondingĀ toĀ aĀ firstĀ channelĀ selectedĀ fromĀ amongĀ aĀ pluralityĀ ofĀ channelsļ¼›Ā aĀ processorĀ coupledĀ toĀ theĀ receiverĀ andĀ configuredĀ to:processĀ theĀ firstĀ message,Ā andĀ generateĀ aĀ secondĀ messageļ¼›Ā andĀ aĀ transmitterĀ coupledĀ toĀ theĀ processorĀ andĀ configuredĀ toĀ transmitĀ theĀ secondĀ messageĀ onĀ theĀ firstĀ channelĀ andĀ accordingĀ toĀ theĀ firstĀ grant.Ā InĀ someĀ embodiments,Ā theĀ firstĀ messageĀ furtherĀ assignsĀ aĀ secondĀ grantĀ correspondingĀ toĀ aĀ secondĀ channelĀ selectedĀ fromĀ amongĀ theĀ channels,Ā whereinĀ theĀ processorĀ isĀ furtherĀ configuredĀ toĀ generateĀ aĀ thirdĀ message,Ā andĀ whereinĀ theĀ transmitterĀ isĀ furtherĀ configuredĀ toĀ transmitĀ theĀ thirdĀ messageĀ onĀ theĀ secondĀ channelĀ andĀ accordingĀ toĀ theĀ secondĀ grantļ¼›Ā theĀ firstĀ messageĀ isĀ aĀ gateĀ messageĀ comprisingĀ aĀ channelĀ assignmentĀ fieldĀ andĀ aĀ grantĀ startĀ timeĀ field,Ā whereinĀ theĀ channelĀ assignmentĀ fieldĀ indicatesĀ theĀ firstĀ channelĀ forĀ upstreamĀ transmission,Ā andĀ whereinĀ theĀ grantĀ startĀ timeĀ fieldĀ indicatesĀ whenĀ toĀ transmitĀ onĀ theĀ firstĀ channelļ¼›Ā theĀ secondĀ messageĀ isĀ aĀ reportĀ messageĀ comprisingĀ aĀ channelĀ assignmentĀ fieldĀ andĀ aĀ queueĀ reportĀ field,Ā whereinĀ theĀ channelĀ assignmentĀ fieldĀ indicatesĀ theĀ firstĀ channel,Ā andĀ whereinĀ theĀ queueĀ reportĀ fieldĀ indicatesĀ aĀ queueĀ reportĀ forĀ theĀ firstĀ channel.
AnyĀ ofĀ theĀ aboveĀ embodimentsĀ mayĀ beĀ combinedĀ withĀ anyĀ ofĀ theĀ otherĀ aboveĀ embodimentsĀ toĀ createĀ aĀ newĀ embodiment.Ā TheseĀ andĀ otherĀ featuresĀ willĀ beĀ moreĀ clearlyĀ understoodĀ fromĀ theĀ followingĀ detailedĀ descriptionĀ takenĀ inĀ conjunctionĀ withĀ theĀ accompanyingĀ drawingsĀ andĀ claims.
BRIEFĀ DESCRIPTIONĀ OFĀ THEĀ DRAWINGS
ForĀ aĀ moreĀ completeĀ understandingĀ ofĀ thisĀ disclosure,Ā referenceĀ isĀ nowĀ madeĀ toĀ theĀ followingĀ briefĀ description,Ā takenĀ inĀ connectionĀ withĀ theĀ accompanyingĀ drawingsĀ andĀ detailedĀ description,Ā whereinĀ likeĀ referenceĀ numeralsĀ representĀ likeĀ parts.
FIG.Ā 1Ā isĀ aĀ schematicĀ diagramĀ ofĀ aĀ PON.
Ā FIG.Ā 2Ā isĀ aĀ graphĀ demonstratingĀ anĀ upstreamĀ channelĀ bondingĀ scheme.
Ā FIG.Ā 3Ā isĀ aĀ messageĀ sequenceĀ diagramĀ illustratingĀ registrationĀ andĀ reportingĀ ofĀ anĀ ONU.
FIG.Ā 4Ā isĀ anĀ extendedĀ discoveryĀ gateĀ messageĀ accordingĀ toĀ anĀ embodimentĀ ofĀ theĀ disclosure.
FIG.Ā 5Ā isĀ theĀ channelĀ assignmentĀ fieldĀ inĀ FIG.Ā 4.
FIG.Ā 6Ā isĀ anĀ extendedĀ gateĀ messageĀ accordingĀ toĀ anĀ embodimentĀ ofĀ theĀ disclosure.
FIG.Ā 7Ā isĀ anĀ extendedĀ gateĀ messageĀ accordingĀ toĀ anotherĀ embodimentĀ ofĀ theĀ disclosure.
FIG.Ā 8Ā isĀ aĀ channelĀ assignmentĀ fieldĀ accordingĀ toĀ anĀ embodimentĀ ofĀ theĀ disclosure.
FIG.Ā 9Ā isĀ anĀ extendedĀ reportĀ messageĀ accordingĀ toĀ anĀ embodimentĀ ofĀ theĀ disclosure.
FIG.Ā 10Ā isĀ theĀ channelĀ assignmentĀ fieldĀ inĀ FIG.Ā 9.
FIG.Ā 11Ā isĀ aĀ flowchartĀ illustratingĀ aĀ methodĀ ofĀ channelĀ bondingĀ inĀ aĀ multiple-wavelengthĀ PONĀ accordingĀ toĀ anĀ embodimentĀ ofĀ theĀ disclosure.
FIG.Ā 12Ā isĀ aĀ schematicĀ diagramĀ ofĀ aĀ deviceĀ accordingĀ toĀ anĀ embodimentĀ ofĀ theĀ disclosure.
DETAILEDĀ DESCRIPTION
ItĀ shouldĀ beĀ understoodĀ atĀ theĀ outsetĀ that,Ā althoughĀ anĀ illustrativeĀ implementationĀ ofĀ oneĀ orĀ moreĀ embodimentsĀ areĀ providedĀ below,Ā theĀ disclosedĀ systemsĀ and/orĀ methodsĀ mayĀ beĀ implementedĀ usingĀ anyĀ numberĀ ofĀ techniques,Ā whetherĀ currentlyĀ knownĀ orĀ inĀ existence.Ā TheĀ disclosureĀ shouldĀ inĀ noĀ wayĀ beĀ limitedĀ toĀ theĀ illustrativeĀ implementations,Ā drawings,Ā andĀ techniquesĀ illustratedĀ below,Ā includingĀ theĀ exemplaryĀ designsĀ andĀ implementationsĀ illustratedĀ andĀ describedĀ herein,Ā butĀ mayĀ beĀ modifiedĀ withinĀ theĀ scopeĀ ofĀ theĀ appendedĀ claimsĀ alongĀ withĀ theirĀ fullĀ scopeĀ ofĀ equivalents.
TheĀ followingĀ abbreviationsĀ andĀ initialismsĀ apply:
ASIC:Ā application-specificĀ integratedĀ circuit
CO:Ā centralĀ office
CPU:Ā centralĀ processingĀ unit
DSP:Ā digitalĀ signalĀ processor
EO:Ā electrical-to-optical
EPON:Ā EthernetĀ PON
FCS:Ā frameĀ checkĀ sequence
G,Ā Gb/s:Ā gigabitĀ (s)Ā perĀ second
ID:Ā identifier
IEEE:Ā InstituteĀ ofĀ ElectricalĀ andĀ ElectronicsĀ Engineers
LLID:Ā logicalĀ linkĀ ID
MPCP:Ā Multi-PointĀ ControlĀ Protocol
NG-PON:Ā next-generationĀ PON
ODN:Ā opticalĀ distributionĀ network
OE:Ā optical-to-electrical
OLT:Ā opticalĀ lineĀ terminal
ONT:Ā opticalĀ networkĀ terminal
ONU:Ā opticalĀ networkĀ unit
opcode:Ā operationĀ code
PON:Ā passiveĀ opticalĀ network
P2MP:Ā point-to-multipoint
RAM:Ā random-accessĀ memory
RN:Ā remoteĀ node
ROM:Ā read-onlyĀ memory
RX:Ā receiverĀ unit
SRAM:Ā staticĀ RAM
sync:Ā synchronization
TCAM:Ā ternaryĀ content-addressableĀ memory
TDM:Ā time-divisionĀ multiplexing
TWDM:Ā time-andĀ wavelength-divisionĀ multiplexing
TX:Ā transmitterĀ unit
WDM:Ā wavelength-divisionĀ multiplexing.
FIG.Ā 1Ā isĀ aĀ schematicĀ diagramĀ ofĀ aĀ PONĀ 100.Ā TheĀ PONĀ 100Ā comprisesĀ anĀ OLTĀ 110,Ā aĀ pluralityĀ ofĀ ONUsĀ 120,Ā andĀ anĀ ODNĀ 130Ā thatĀ couplesĀ theĀ OLTĀ 110Ā toĀ theĀ ONUsĀ 120.Ā TheĀ PONĀ 100Ā isĀ aĀ communicationsĀ networkĀ thatĀ mayĀ notĀ requireĀ activeĀ componentsĀ toĀ distributeĀ dataĀ  betweenĀ theĀ OLTĀ 110Ā andĀ theĀ ONUsĀ 120.Ā Instead,Ā theĀ PONĀ 100Ā mayĀ useĀ passiveĀ opticalĀ componentsĀ inĀ theĀ ODNĀ 130Ā toĀ distributeĀ dataĀ betweenĀ theĀ OLTĀ 110Ā andĀ theĀ ONUsĀ 120.
TheĀ OLTĀ 110Ā communicatesĀ withĀ theĀ ONUsĀ 120Ā andĀ anotherĀ network.Ā Specifically,Ā theĀ OLTĀ 110Ā isĀ anĀ intermediaryĀ betweenĀ theĀ otherĀ networkĀ andĀ theĀ ONUsĀ 120.Ā ForĀ instance,Ā theĀ OLTĀ 110Ā forwardsĀ dataĀ receivedĀ fromĀ theĀ otherĀ networkĀ toĀ theĀ ONUsĀ 120Ā andĀ forwardsĀ dataĀ receivedĀ fromĀ theĀ ONUsĀ 120Ā toĀ theĀ otherĀ network.Ā TheĀ OLTĀ 110Ā comprisesĀ aĀ transmitterĀ andĀ aĀ receiver.Ā WhenĀ theĀ otherĀ networkĀ usesĀ aĀ networkĀ protocolĀ thatĀ isĀ differentĀ fromĀ theĀ protocolĀ usedĀ inĀ theĀ PONĀ 100,Ā theĀ OLTĀ 110Ā comprisesĀ aĀ converterĀ thatĀ convertsĀ theĀ networkĀ protocolĀ toĀ theĀ PONĀ protocolĀ andĀ viceĀ versa.Ā TheĀ OLTĀ 110Ā isĀ typicallyĀ locatedĀ atĀ aĀ centralĀ locationĀ suchĀ asĀ aĀ CO,Ā butĀ itĀ mayĀ alsoĀ beĀ locatedĀ atĀ otherĀ suitableĀ locations.
TheĀ ODNĀ 130Ā isĀ aĀ dataĀ distributionĀ systemĀ thatĀ comprisesĀ opticalĀ fiberĀ cables,Ā couplers,Ā splitters,Ā distributors,Ā andĀ otherĀ suitableĀ components.Ā TheĀ componentsĀ includeĀ passiveĀ opticalĀ componentsĀ thatĀ doĀ notĀ requireĀ powerĀ toĀ distributeĀ signalsĀ betweenĀ theĀ OLTĀ 110Ā andĀ theĀ ONUsĀ 120.Ā Alternatively,Ā theĀ componentsĀ includeĀ activeĀ componentsĀ suchĀ asĀ opticalĀ amplifiersĀ thatĀ doĀ requireĀ power.Ā TheĀ ODNĀ 130Ā extendsĀ fromĀ theĀ OLTĀ 110Ā toĀ theĀ ONUsĀ 120Ā inĀ aĀ branchingĀ configurationĀ asĀ shown,Ā butĀ theĀ ODNĀ 130Ā mayĀ beĀ configuredĀ inĀ anyĀ otherĀ suitableĀ P2MPĀ configuration.
TheĀ ONUsĀ 120Ā communicateĀ withĀ theĀ OLTĀ 110Ā andĀ customersĀ andĀ actĀ asĀ intermediariesĀ betweenĀ theĀ OLTĀ 110Ā andĀ theĀ customers.Ā ForĀ instance,Ā theĀ ONUsĀ 120Ā forwardĀ dataĀ fromĀ theĀ OLTĀ 110Ā toĀ theĀ customersĀ andĀ forwardĀ dataĀ fromĀ theĀ customersĀ toĀ theĀ OLTĀ 110.Ā TheĀ ONUsĀ 120Ā compriseĀ opticalĀ transmittersĀ thatĀ convertĀ electricalĀ signalsĀ intoĀ opticalĀ signalsĀ andĀ transmitĀ theĀ opticalĀ signalsĀ toĀ theĀ OLTĀ 110,Ā andĀ theĀ ONUsĀ 120Ā compriseĀ opticalĀ receiversĀ thatĀ receiveĀ opticalĀ signalsĀ fromĀ theĀ OLTĀ 110Ā andĀ convertĀ theĀ opticalĀ signalsĀ intoĀ electricalĀ signals.Ā TheĀ ONUsĀ 120Ā furtherĀ compriseĀ secondĀ transmittersĀ thatĀ transmitĀ theĀ electricalĀ signalsĀ toĀ theĀ customersĀ andĀ secondĀ receiversĀ thatĀ receiveĀ electricalĀ signalsĀ fromĀ theĀ customers.Ā ONUsĀ 120Ā andĀ ONTsĀ areĀ similar,Ā andĀ theĀ termsĀ mayĀ beĀ usedĀ interchangeably.Ā TheĀ ONUsĀ 120Ā areĀ typicallyĀ locatedĀ atĀ distributedĀ locationsĀ suchĀ asĀ customerĀ premises,Ā butĀ theyĀ mayĀ alsoĀ beĀ locatedĀ atĀ otherĀ suitableĀ locations.
IEEEĀ P802.3caĀ 100G-EPONĀ TaskĀ ForceĀ isĀ taskedĀ withĀ definingĀ physicalĀ layerĀ specificationsĀ andĀ managementĀ parametersĀ forĀ 25G,Ā 50G,Ā andĀ 100GĀ multiple-wavelengthĀ PONs.Ā SuchĀ PONsĀ supportĀ channelĀ bonding,Ā whichĀ refersĀ toĀ theĀ OLTĀ 110Ā assigningĀ multipleĀ channelsĀ  toĀ anĀ ONUĀ 120Ā toĀ useĀ atĀ theĀ sameĀ timeĀ andĀ refersĀ toĀ anĀ ONUĀ 120Ā usingĀ multipleĀ channelsĀ atĀ theĀ sameĀ time.Ā TheĀ ONUĀ 120Ā mayĀ performĀ channel-bondedĀ receptionĀ inĀ aĀ downstreamĀ directionĀ fromĀ theĀ OLTĀ 110Ā toĀ theĀ ONUĀ 120,Ā orĀ channel-bondedĀ transmissionĀ inĀ anĀ upstreamĀ directionĀ fromĀ theĀ ONUĀ 120Ā toĀ theĀ OLTĀ 110.Ā ForĀ aĀ 100G-EPON,Ā eachĀ channel,Ā orĀ lane,Ā correspondsĀ toĀ aĀ differentĀ wavelengthĀ andĀ providesĀ upĀ toĀ aĀ 25GĀ dataĀ rate.Ā Thus,Ā anĀ ONUĀ 120Ā transmitsĀ andĀ receivesĀ usingĀ oneĀ channelĀ toĀ achieveĀ aĀ 25GĀ dataĀ rate,Ā theĀ ONUĀ 120Ā transmitsĀ andĀ receivesĀ usingĀ twoĀ channelsĀ toĀ achieveĀ aĀ 50GĀ dataĀ rate,Ā theĀ ONUĀ 120Ā transmitsĀ andĀ receivesĀ usingĀ threeĀ channelsĀ toĀ achieveĀ aĀ 75GĀ dataĀ rate,Ā andĀ theĀ ONUĀ 120Ā transmitsĀ andĀ receivesĀ usingĀ fourĀ channelsĀ toĀ achieveĀ aĀ 100GĀ dataĀ rate.
FIG.Ā 2Ā isĀ aĀ graphĀ 200Ā demonstratingĀ anĀ upstreamĀ channelĀ bondingĀ scheme.Ā TheĀ x-axisĀ representsĀ timeĀ inĀ constantĀ units,Ā andĀ theĀ y-axisĀ representsĀ channelsĀ inĀ constantĀ units.Ā TheĀ PONĀ 100Ā employsĀ theĀ upstreamĀ channelĀ bondingĀ scheme.Ā InĀ thisĀ case,Ā theĀ PONĀ 100Ā comprisesĀ sevenĀ ONUsĀ 120Ā denotedĀ asĀ ONUĀ 1-ONUĀ 7.Ā TheĀ upstreamĀ channelĀ bondingĀ schemeĀ usesĀ channelsĀ 0-3Ā correspondingĀ toĀ wavelengthsĀ Ī»0-Ī»4.Ā EachĀ channelĀ providesĀ aĀ 25GĀ dataĀ rate.Ā AtĀ timeĀ t1,Ā ONUĀ 1Ā transmitsĀ usingĀ channelĀ 3,Ā ONUĀ 2Ā transmitsĀ usingĀ bothĀ channelĀ 0Ā andĀ channelĀ 2,Ā andĀ ONUĀ 3Ā transmitsĀ usingĀ channelĀ 1.Ā AtĀ timeĀ t2,Ā ONUĀ 2Ā transmitsĀ usingĀ bothĀ channelĀ 0Ā andĀ channelĀ 2,Ā ONUĀ 3Ā transmitsĀ usingĀ channelĀ 1,Ā andĀ ONUĀ 6Ā transmitsĀ usingĀ channelĀ 3.Ā AtĀ timeĀ t3,Ā ONUĀ 2Ā transmitsĀ usingĀ bothĀ channelĀ 0Ā andĀ channelĀ 2,Ā ONUĀ 6Ā transmitsĀ usingĀ channelĀ 3,Ā andĀ ONUĀ 7Ā transmitsĀ usingĀ channelĀ 1.Ā AtĀ timeĀ t4,Ā ONUĀ 5Ā transmitsĀ usingĀ channelsĀ 0-3.Ā However,Ā thereĀ remainsĀ aĀ needĀ toĀ implementĀ channelĀ bondingĀ inĀ theĀ upstreamĀ direction.
DisclosedĀ hereinĀ areĀ embodimentsĀ forĀ channelĀ bondingĀ inĀ multiple-wavelengthĀ PONs.Ā TheĀ disclosedĀ embodimentsĀ extendĀ IEEEĀ MPCPĀ messagesĀ toĀ implementĀ upstreamĀ channelĀ bonding.Ā AĀ discoveryĀ gateĀ messageĀ isĀ extendedĀ toĀ includeĀ aĀ channelĀ assignmentĀ field,Ā orĀ laneĀ flagĀ field,Ā forĀ theĀ OLTĀ 110Ā toĀ grantĀ upstreamĀ channelsĀ toĀ theĀ ONUsĀ 120Ā forĀ discovery.Ā AĀ gateĀ messageĀ isĀ extendedĀ toĀ includeĀ aĀ channelĀ assignmentĀ fieldĀ forĀ theĀ OLTĀ 110Ā toĀ grantĀ upstreamĀ channelsĀ toĀ theĀ ONUsĀ 120Ā forĀ normalĀ operation.Ā InĀ thisĀ context,Ā normalĀ operationĀ refersĀ toĀ operationĀ otherĀ thanĀ duringĀ discovery.Ā ForĀ instance,Ā normalĀ operationĀ comprisesĀ communicationĀ ofĀ userĀ dataĀ thatĀ isĀ toĀ beĀ communicatedĀ beyondĀ theĀ PONĀ 100Ā andĀ toĀ aĀ largerĀ network.Ā AĀ reportĀ messageĀ isĀ extendedĀ toĀ includeĀ aĀ channelĀ assignmentĀ fieldĀ forĀ theĀ ONUsĀ 120Ā toĀ reportĀ queueĀ statusesĀ ofĀ channelsĀ toĀ theĀ OLTĀ 110.Ā ThoughĀ specificĀ numbersĀ ofĀ channelsĀ areĀ discussed,Ā theĀ disclosedĀ embodimentsĀ applyĀ toĀ anyĀ suitableĀ numberĀ ofĀ channels.Ā InĀ addition,Ā thoughĀ channelsĀ  areĀ discussedĀ asĀ beingĀ associatedĀ withĀ wavelengths,Ā channelsĀ mayĀ beĀ associatedĀ withĀ otherĀ concepts.Ā Furthermore,Ā thoughĀ upstreamĀ channelĀ bondingĀ isĀ discussed,Ā theĀ sameĀ principlesĀ applyĀ toĀ downstreamĀ channelĀ bonding.Ā Finally,Ā thoughĀ extendedĀ IEEEĀ MPCPĀ messagesĀ areĀ discussed,Ā theĀ sameĀ principlesĀ applyĀ toĀ otherĀ typesĀ ofĀ extendedĀ messagesĀ orĀ newĀ messages.
FIG.Ā 3Ā isĀ aĀ messageĀ sequenceĀ diagramĀ 300Ā illustratingĀ registrationĀ andĀ reportingĀ ofĀ anĀ ONUĀ 120.Ā AtĀ stepĀ 310,Ā theĀ OLTĀ 110Ā transmitsĀ toĀ theĀ ONUsĀ 120Ā aĀ discoveryĀ gateĀ messageĀ grantingĀ transmissionĀ windowsĀ forĀ discovery.Ā AtĀ stepĀ 320,Ā anĀ ONUĀ 120Ā transmitsĀ toĀ theĀ OLTĀ 110Ā aĀ registerĀ requestĀ messageĀ requestingĀ registrationĀ inĀ theĀ PONĀ 100Ā andĀ indicatingĀ capabilitiesĀ ofĀ theĀ ONUĀ 120.Ā AtĀ stepĀ 330,Ā theĀ OLTĀ 110Ā transmitsĀ toĀ theĀ ONUĀ 120Ā aĀ registerĀ messageĀ instructingĀ theĀ ONUĀ 120Ā toĀ registerĀ andĀ assigningĀ IDsĀ toĀ theĀ ONUĀ 120.Ā AtĀ stepĀ 340,Ā theĀ OLTĀ 110Ā transmitsĀ toĀ theĀ ONUĀ 120Ā aĀ gateĀ messageĀ toĀ grantĀ transmissionĀ windowsĀ forĀ theĀ ONUĀ 120Ā toĀ transmitĀ aĀ registerĀ acknowledgmentĀ message.
AtĀ stepĀ 350,Ā theĀ ONUĀ 120Ā transmitsĀ toĀ theĀ OLTĀ 110Ā aĀ registerĀ acknowledgmentĀ messageĀ acknowledgingĀ theĀ registerĀ messageĀ andĀ echoingĀ theĀ IDs.Ā ByĀ completingĀ stepĀ 350,Ā theĀ ONUĀ 120Ā completesĀ registrationĀ andĀ entersĀ normalĀ operation.Ā AtĀ stepĀ 360,Ā theĀ OLTĀ 110Ā transmitsĀ toĀ theĀ ONUĀ 120Ā aĀ gateĀ messageĀ instructingĀ theĀ ONUĀ 120Ā toĀ grantĀ transmissionĀ windowsĀ forĀ normalĀ transmission.Ā Finally,Ā atĀ stepĀ 370,Ā theĀ ONUĀ 120Ā transmitsĀ toĀ theĀ OLTĀ 110Ā aĀ reportĀ messageĀ indicatingĀ queueĀ statuses.Ā TheĀ messagesĀ areĀ describedĀ inĀ IEEEĀ 802.3-2012,Ā SectionĀ 5,Ā 2012Ā (Ā ā€œ802.3-2012ā€Ā )Ā ,Ā whichĀ isĀ incorporatedĀ byĀ reference.Ā TheĀ discoveryĀ gateĀ messageĀ atĀ stepĀ 310ļ¼›Ā theĀ gateĀ messageĀ atĀ  steps Ā 340,Ā 360ļ¼›Ā andĀ theĀ reportĀ messageĀ atĀ stepĀ 370Ā areĀ extendedĀ asĀ describedĀ furtherĀ below.
FIG.Ā 4Ā isĀ anĀ extendedĀ discoveryĀ gateĀ messageĀ 400Ā accordingĀ toĀ anĀ embodimentĀ ofĀ theĀ disclosure.Ā TheĀ extendedĀ discoveryĀ gateĀ messageĀ 400Ā implementsĀ theĀ discoveryĀ gateĀ messageĀ inĀ stepĀ 310Ā inĀ FIG.Ā 3.Ā TheĀ OLTĀ 110Ā transmitsĀ theĀ extendedĀ discoveryĀ gateĀ messageĀ 400Ā toĀ theĀ ONUĀ 120Ā toĀ grantĀ transmissionĀ windowsĀ inĀ multipleĀ channelsĀ forĀ discovery.Ā TheĀ extendedĀ discoveryĀ gateĀ messageĀ 400Ā comprisesĀ aĀ destinationĀ addressĀ fieldĀ 405,Ā aĀ sourceĀ addressĀ fieldĀ 410,Ā aĀ length/typeĀ fieldĀ 415,Ā anĀ opcodeĀ fieldĀ 420,Ā aĀ timestampĀ fieldĀ 425,Ā aĀ channelĀ assignmentĀ fieldĀ 430,Ā aĀ numberĀ ofĀ grants/flagsĀ fieldĀ 435,Ā aĀ grantĀ #1Ā startĀ timeĀ fieldĀ 440,Ā aĀ grantĀ #1Ā lengthĀ fieldĀ 445,Ā aĀ syncĀ timeĀ fieldĀ 450,Ā aĀ discoveryĀ informationĀ fieldĀ 455,Ā aĀ channelĀ informationĀ fieldĀ 460,Ā aĀ pad/reservedĀ fieldĀ 465,Ā andĀ anĀ FCSĀ fieldĀ 470.
TheĀ channelĀ assignmentĀ fieldĀ 430Ā mayĀ beĀ aĀ bitmapĀ andĀ indicatesĀ aĀ channel,Ā forĀ instanceĀ channelĀ 1Ā correspondingĀ toĀ wavelengthĀ Ī»1,Ā forĀ theĀ ONUĀ 120Ā toĀ transmitĀ onĀ duringĀ discovery.Ā TheĀ channelĀ assignmentĀ fieldĀ 430Ā isĀ describedĀ furtherĀ below.Ā TheĀ grantĀ #1Ā startĀ timeĀ fieldĀ 440Ā indicatesĀ whenĀ theĀ ONUĀ 120Ā canĀ transmitĀ aĀ firstĀ signalĀ onĀ theĀ channelĀ indicatedĀ inĀ theĀ channelĀ assignmentĀ fieldĀ 430,Ā andĀ theĀ grantĀ #1Ā lengthĀ fieldĀ 445Ā indicatesĀ howĀ longĀ theĀ ONUĀ 120Ā canĀ transmitĀ theĀ firstĀ signalĀ onĀ theĀ channelĀ indicatedĀ inĀ theĀ channelĀ assignmentĀ fieldĀ 430.Ā TheĀ channelĀ informationĀ fieldĀ 460Ā indicatesĀ channel-relatedĀ informationĀ ofĀ theĀ channelĀ indicatedĀ inĀ theĀ channelĀ assignmentĀ fieldĀ 430.Ā TheĀ channel-relatedĀ informationĀ isĀ aĀ channelĀ rate,Ā aĀ channelĀ association,Ā aĀ channelĀ priority,Ā orĀ otherĀ suitableĀ information.
TheĀ OLTĀ 110Ā mayĀ transmitĀ theĀ extendedĀ discoveryĀ gateĀ messageĀ 400Ā toĀ theĀ ONUĀ 120Ā whetherĀ orĀ notĀ theĀ ONUĀ 120Ā isĀ capableĀ ofĀ channelĀ bonding.Ā IfĀ theĀ OLTĀ 110Ā determinesĀ thatĀ itĀ shouldĀ assignĀ multipleĀ channelsĀ toĀ theĀ ONUĀ 120Ā forĀ discovery,Ā thenĀ theĀ channelĀ assignmentĀ fieldĀ 430Ā indicatesĀ multipleĀ channels.Ā Alternatively,Ā ifĀ theĀ OLTĀ 110Ā determinesĀ thatĀ itĀ shouldĀ assignĀ multipleĀ channelsĀ toĀ theĀ ONUĀ 120Ā forĀ discovery,Ā thenĀ theĀ channelĀ assignmentĀ fieldĀ 430Ā indicatesĀ oneĀ channelĀ andĀ theĀ OLTĀ 110Ā transmitsĀ theĀ extendedĀ discoveryĀ gateĀ messageĀ 400Ā toĀ theĀ ONUĀ 120Ā forĀ eachĀ channel.
FIG.Ā 5Ā isĀ theĀ channelĀ assignmentĀ fieldĀ 430Ā inĀ FIG.Ā 4.Ā TheĀ channelĀ assignmentĀ fieldĀ 430Ā comprisesĀ bitĀ 0Ā correspondingĀ toĀ channelĀ 0,Ā bitĀ 1Ā correspondingĀ toĀ channelĀ 1,Ā bitĀ 2Ā correspondingĀ toĀ channelĀ 2,Ā bitĀ 3Ā correspondingĀ toĀ channelĀ 3,Ā andĀ bitsĀ 4-7Ā thatĀ areĀ reserved.Ā ForĀ eachĀ ofĀ bitsĀ 0-3,Ā aĀ binaryĀ 0Ā indicatesĀ thatĀ theĀ correspondingĀ channelĀ isĀ notĀ forĀ discoveryĀ andĀ aĀ binaryĀ 1Ā indicatesĀ thatĀ theĀ correspondingĀ channelĀ isĀ forĀ discovery.Ā BitsĀ 4-7Ā mayĀ beĀ paddedĀ withĀ 0sĀ orĀ 1s.Ā ForĀ example,Ā whenĀ bitsĀ 0-7Ā areĀ equalĀ toĀ 00000100,Ā channelsĀ 0-1Ā andĀ 3Ā areĀ notĀ forĀ discoveryĀ andĀ channelĀ 2Ā isĀ forĀ discovery.
FIG.Ā 6Ā isĀ anĀ extendedĀ gateĀ messageĀ 600Ā accordingĀ toĀ anĀ embodimentĀ ofĀ theĀ disclosure.Ā TheĀ extendedĀ gateĀ messageĀ 600Ā implementsĀ theĀ gateĀ messageĀ inĀ  steps Ā 340,Ā 360Ā inĀ FIG.Ā 3.Ā TheĀ OLTĀ 110Ā transmitsĀ theĀ extendedĀ gateĀ messageĀ 600Ā toĀ theĀ ONUĀ 120Ā toĀ grantĀ transmissionĀ windowsĀ inĀ multipleĀ channelsĀ forĀ normalĀ operation.Ā TheĀ extendedĀ gateĀ messageĀ 600Ā comprisesĀ aĀ destinationĀ addressĀ fieldĀ 605,Ā aĀ sourceĀ addressĀ fieldĀ 610,Ā aĀ length/typeĀ fieldĀ 615,Ā anĀ opcodeĀ fieldĀ 620,Ā aĀ timestampĀ fieldĀ 625,Ā aĀ channelĀ assignmentĀ fieldĀ 630,Ā aĀ numberĀ ofĀ grants/flagsĀ fieldĀ 635,Ā aĀ grantĀ #1Ā startĀ timeĀ fieldĀ 640,Ā aĀ grantĀ #1Ā lengthĀ fieldĀ 645,Ā aĀ grantĀ #2Ā startĀ timeĀ fieldĀ 650,Ā aĀ grantĀ  #2Ā lengthĀ fieldĀ 655,Ā aĀ grantĀ #3Ā startĀ timeĀ fieldĀ 660,Ā aĀ grantĀ #3Ā lengthĀ fieldĀ 665,Ā aĀ grantĀ #4Ā startĀ timeĀ fieldĀ 670,Ā aĀ grantĀ #4Ā lengthĀ fieldĀ 675,Ā aĀ pad/reservedĀ fieldĀ 680,Ā andĀ anĀ FCSĀ fieldĀ 685.
TheĀ channelĀ assignmentĀ fieldĀ 630Ā mayĀ beĀ aĀ bitmapĀ andĀ indicatesĀ aĀ channel,Ā forĀ instanceĀ channelĀ 1Ā correspondingĀ toĀ wavelengthĀ Ī»1,Ā forĀ theĀ ONUĀ 120Ā toĀ transmitĀ onĀ duringĀ normalĀ operation.Ā TheĀ channelĀ assignmentĀ fieldĀ 630Ā isĀ describedĀ furtherĀ below.Ā TheĀ grantĀ #1Ā startĀ timeĀ fieldĀ 640Ā indicatesĀ whenĀ theĀ ONUĀ 120Ā canĀ transmitĀ aĀ firstĀ signalĀ onĀ theĀ channelĀ indicatedĀ inĀ theĀ channelĀ assignmentĀ fieldĀ 630,Ā andĀ theĀ grantĀ #1Ā lengthĀ fieldĀ 645Ā indicatesĀ howĀ longĀ theĀ ONUĀ 120Ā canĀ transmitĀ theĀ firstĀ signalĀ onĀ theĀ channelĀ indicatedĀ inĀ theĀ channelĀ assignmentĀ fieldĀ 630.Ā TheĀ grantĀ #2Ā startĀ timeĀ fieldĀ 650Ā andĀ theĀ grantĀ #2Ā lengthĀ fieldĀ 655Ā areĀ similarĀ forĀ aĀ secondĀ signal,Ā theĀ grantĀ #3Ā startĀ timeĀ fieldĀ 660Ā andĀ theĀ grantĀ #3Ā lengthĀ fieldĀ 665Ā areĀ similarĀ forĀ aĀ thirdĀ signal,Ā andĀ theĀ grantĀ #4Ā startĀ timeĀ fieldĀ 670Ā andĀ theĀ grantĀ #4Ā lengthĀ fieldĀ 675Ā areĀ similarĀ forĀ aĀ fourthĀ signal.
TheĀ OLTĀ 110Ā mayĀ transmitĀ theĀ extendedĀ gateĀ messageĀ 600Ā toĀ theĀ ONUĀ 120Ā whetherĀ orĀ notĀ theĀ ONUĀ 120Ā isĀ capableĀ ofĀ channelĀ bonding.Ā IfĀ theĀ OLTĀ 110Ā determinesĀ thatĀ itĀ shouldĀ assignĀ multipleĀ channelsĀ toĀ theĀ ONUĀ 120Ā forĀ normalĀ operation,Ā thenĀ theĀ channelĀ assignmentĀ fieldĀ 630Ā indicatesĀ multipleĀ channels.Ā Alternatively,Ā ifĀ theĀ OLTĀ 110Ā determinesĀ thatĀ itĀ shouldĀ assignĀ multipleĀ channelsĀ toĀ theĀ ONUĀ 120Ā forĀ normalĀ operation,Ā thenĀ theĀ channelĀ assignmentĀ fieldĀ 630Ā indicatesĀ oneĀ channelĀ andĀ theĀ OLTĀ 110Ā transmitsĀ theĀ extendedĀ gateĀ messageĀ 600Ā toĀ theĀ ONUĀ 120Ā forĀ eachĀ channel.
FIG.Ā 7Ā isĀ anĀ extendedĀ gateĀ messageĀ 700Ā accordingĀ toĀ anotherĀ embodimentĀ ofĀ theĀ disclosure.Ā TheĀ extendedĀ gateĀ messageĀ 700Ā isĀ similarĀ toĀ theĀ extendedĀ gateĀ messageĀ 600Ā inĀ FIG.Ā 6.Ā Specifically,Ā theĀ extendedĀ gateĀ messageĀ 700Ā comprisesĀ aĀ destinationĀ addressĀ fieldĀ 703,Ā aĀ sourceĀ addressĀ fieldĀ 705,Ā aĀ length/typeĀ fieldĀ 707,Ā anĀ opcodeĀ fieldĀ 710,Ā aĀ timestampĀ fieldĀ 713,Ā aĀ numberĀ ofĀ grants/flagsĀ fieldĀ 715,Ā aĀ grantĀ #1Ā startĀ timeĀ fieldĀ 720,Ā aĀ grantĀ #1Ā lengthĀ fieldĀ 723,Ā aĀ grantĀ #2Ā startĀ timeĀ fieldĀ 727,Ā aĀ grantĀ #2Ā lengthĀ fieldĀ 730,Ā aĀ grantĀ #3Ā startĀ timeĀ fieldĀ 735,Ā aĀ grantĀ #3Ā lengthĀ fieldĀ 737,Ā aĀ grantĀ #4Ā startĀ timeĀ fieldĀ 743,Ā aĀ grantĀ #4Ā lengthĀ fieldĀ 745,Ā aĀ pad/reservedĀ fieldĀ 747,Ā andĀ anĀ FCSĀ fieldĀ 750.Ā However,Ā unlikeĀ theĀ extendedĀ gateĀ messageĀ 600,Ā theĀ extendedĀ gateĀ messageĀ 700Ā comprisesĀ aĀ channelĀ assignmentĀ fieldĀ forĀ eachĀ grant.Ā Specifically,Ā theĀ extendedĀ gateĀ messageĀ 700Ā comprisesĀ aĀ channelĀ assignmentĀ #1Ā fieldĀ 717,Ā aĀ channelĀ assignmentĀ #2Ā fieldĀ 725,Ā aĀ channelĀ assignmentĀ #3Ā fieldĀ 733,Ā andĀ aĀ channelĀ assignmentĀ #4Ā fieldĀ 740.
FIG.Ā 8Ā isĀ aĀ channelĀ assignmentĀ fieldĀ 800Ā accordingĀ toĀ anĀ embodimentĀ ofĀ theĀ disclosure.Ā TheĀ channelĀ assignmentĀ fieldĀ 800Ā implementsĀ theĀ channelĀ assignmentĀ fieldĀ 630Ā inĀ FIG.Ā 6Ā andĀ theĀ channelĀ assignmentĀ #1Ā fieldĀ 717,Ā theĀ channelĀ assignmentĀ #2Ā fieldĀ 725,Ā theĀ channelĀ assignmentĀ #3Ā fieldĀ 733,Ā andĀ theĀ channelĀ assignmentĀ #4Ā fieldĀ 740Ā inĀ FIG.Ā 7.Ā TheĀ channelĀ assignmentĀ fieldĀ 800Ā comprisesĀ bitĀ 0Ā correspondingĀ toĀ channelĀ 0,Ā bitĀ 1Ā correspondingĀ toĀ channelĀ 1,Ā bitĀ 2Ā correspondingĀ toĀ channelĀ 2,Ā bitĀ 3Ā correspondingĀ toĀ channelĀ 3,Ā andĀ bitsĀ 4-7Ā thatĀ areĀ reserved.Ā ForĀ eachĀ ofĀ bitsĀ 0-3,Ā aĀ binaryĀ 0Ā indicatesĀ thatĀ theĀ succeedingĀ grantĀ isĀ notĀ forĀ theĀ correspondingĀ channelĀ andĀ aĀ binaryĀ 1Ā indicatesĀ thatĀ theĀ succeedingĀ grantĀ isĀ forĀ theĀ correspondingĀ channel.Ā BitsĀ 4-7Ā mayĀ beĀ paddedĀ withĀ 0sĀ orĀ 1s.Ā ForĀ example,Ā whenĀ bitsĀ 0-7Ā areĀ equalĀ toĀ 00000010,Ā theĀ grantĀ isĀ notĀ forĀ channelsĀ 0Ā andĀ 2-3,Ā butĀ isĀ forĀ channelĀ 1.
FIG.Ā 9Ā isĀ anĀ extendedĀ reportĀ messageĀ 900Ā accordingĀ toĀ anĀ embodimentĀ ofĀ theĀ disclosure.Ā TheĀ extendedĀ reportĀ messageĀ 900Ā implementsĀ theĀ reportĀ messageĀ inĀ stepĀ 370Ā inĀ FIG.Ā 3.Ā TheĀ ONUĀ 120Ā transmitsĀ theĀ extendedĀ reportĀ messageĀ 900Ā toĀ theĀ OLTĀ 110Ā toĀ reportĀ queueĀ statuses.Ā TheĀ extendedĀ reportĀ messageĀ 900Ā comprisesĀ aĀ destinationĀ addressĀ fieldĀ 905,Ā aĀ sourceĀ addressĀ fieldĀ 910,Ā aĀ length/typeĀ fieldĀ 915,Ā anĀ opcodeĀ fieldĀ 920,Ā aĀ timestampĀ fieldĀ 925,Ā aĀ numberĀ ofĀ queueĀ setsĀ fieldĀ 930,Ā aĀ channelĀ assignmentĀ fieldĀ 935,Ā aĀ reportĀ bitmapĀ fieldĀ 940,Ā aĀ queueĀ #0Ā reportĀ fieldĀ 945,Ā aĀ queueĀ #1Ā reportĀ fieldĀ 950,Ā aĀ queueĀ #2Ā reportĀ fieldĀ 955,Ā aĀ queueĀ #3Ā reportĀ fieldĀ 960,Ā aĀ queueĀ #4Ā reportĀ fieldĀ 965,Ā aĀ queueĀ #5Ā reportĀ fieldĀ 970,Ā aĀ queueĀ #6Ā reportĀ fieldĀ 975,Ā aĀ queueĀ #7Ā reportĀ fieldĀ 980,Ā aĀ pad/reservedĀ fieldĀ 985,Ā andĀ anĀ FCSĀ fieldĀ 990.
TheĀ channelĀ assignmentĀ fieldĀ 935Ā mayĀ beĀ aĀ bitmapĀ andĀ indicatesĀ aĀ channel,Ā forĀ instanceĀ channelĀ 1Ā correspondingĀ toĀ wavelengthĀ Ī»1,Ā forĀ whichĀ theĀ ONUĀ 120Ā isĀ reportingĀ queueĀ statuses.Ā TheĀ channelĀ assignmentĀ fieldĀ 935Ā isĀ describedĀ furtherĀ below.Ā TheĀ queueĀ #0Ā reportĀ fieldĀ 945,Ā theĀ queueĀ #1Ā reportĀ fieldĀ 950,Ā theĀ queueĀ #2Ā reportĀ fieldĀ 955,Ā theĀ queueĀ #3Ā reportĀ fieldĀ 960,Ā theĀ queueĀ #4Ā reportĀ fieldĀ 965,Ā theĀ queueĀ #5Ā reportĀ fieldĀ 970,Ā theĀ queueĀ #6Ā reportĀ fieldĀ 975,Ā andĀ theĀ queueĀ #7Ā reportĀ fieldĀ 980Ā indicateĀ successiveĀ queueĀ reportsĀ forĀ theĀ channelĀ indicatedĀ inĀ theĀ channelĀ assignmentĀ fieldĀ 935.
TheĀ ONUĀ 120Ā mayĀ transmitĀ theĀ extendedĀ reportĀ messageĀ 900Ā toĀ theĀ OLTĀ 110Ā whetherĀ orĀ notĀ theĀ ONUĀ 120Ā isĀ capableĀ ofĀ channelĀ bonding.Ā IfĀ theĀ ONUĀ 120Ā isĀ usingĀ multipleĀ channels,Ā thenĀ theĀ extendedĀ reportĀ messageĀ 900Ā comprisesĀ aĀ setĀ ofĀ aĀ channelĀ assignmentĀ fieldĀ andĀ aĀ queueĀ reportĀ fieldĀ forĀ eachĀ channel.Ā Alternatively,Ā ifĀ theĀ ONUĀ 120Ā isĀ usingĀ multipleĀ channels,Ā thenĀ theĀ  channelĀ assignmentĀ fieldĀ 935Ā indicatesĀ oneĀ channelĀ andĀ theĀ ONUĀ 120Ā transmitsĀ theĀ extendedĀ reportĀ messageĀ 900Ā toĀ theĀ OLTĀ 110Ā forĀ eachĀ channel.
FIG.Ā 10Ā isĀ theĀ channelĀ assignmentĀ fieldĀ 935Ā inĀ FIG.Ā 9.Ā TheĀ channelĀ assignmentĀ fieldĀ 935Ā comprisesĀ bitĀ 0Ā correspondingĀ toĀ channelĀ 0,Ā bitĀ 1Ā correspondingĀ toĀ channelĀ 1,Ā bitĀ 2Ā correspondingĀ toĀ channelĀ 2,Ā bitĀ 3Ā correspondingĀ toĀ channelĀ 3,Ā andĀ bitsĀ 4-7Ā thatĀ areĀ reserved.Ā ForĀ eachĀ ofĀ bitsĀ 0-3,Ā aĀ binaryĀ 0Ā indicatesĀ thatĀ theĀ succeedingĀ queueĀ reportsĀ areĀ notĀ forĀ theĀ correspondingĀ channelĀ andĀ aĀ binaryĀ 1Ā indicatesĀ thatĀ theĀ succeedingĀ queueĀ reportsĀ areĀ forĀ theĀ correspondingĀ channel.Ā BitsĀ 4-7Ā mayĀ beĀ paddedĀ withĀ 0sĀ orĀ 1s.Ā ForĀ example,Ā whenĀ bitsĀ 0-7Ā areĀ equalĀ toĀ 00000010,Ā theĀ grantĀ isĀ notĀ forĀ channelsĀ 0Ā andĀ 2-3,Ā butĀ isĀ forĀ channelĀ 1.
UsingĀ theĀ extendedĀ discoveryĀ gateĀ messageĀ 400,Ā theĀ extendedĀ gateĀ messageĀ 600,Ā theĀ extendedĀ gateĀ messageĀ 700,Ā andĀ theĀ extendedĀ reportĀ messageĀ 900,Ā theĀ OLTĀ 110Ā andĀ theĀ ONUsĀ 120Ā mayĀ implementĀ channelĀ bonding.Ā TheĀ OLTĀ 110Ā assignsĀ grantsĀ toĀ theĀ ONUsĀ 120Ā inĀ atĀ leastĀ threeĀ differentĀ manners.Ā InĀ aĀ firstĀ manner,Ā theĀ OLTĀ 110Ā selectsĀ aĀ channel,Ā forĀ instanceĀ channelĀ 0,Ā asĀ aĀ controlĀ channelĀ andĀ communicatesĀ controlĀ informationĀ suchĀ asĀ theĀ extendedĀ discoveryĀ gateĀ messageĀ 400,Ā theĀ extendedĀ gateĀ messageĀ 600,Ā andĀ theĀ extendedĀ gateĀ messageĀ 700Ā onĀ channelĀ 0.Ā Thus,Ā ifĀ theĀ OLTĀ 110Ā desiresĀ toĀ assignĀ grantsĀ toĀ anĀ ONUĀ 120Ā forĀ bothĀ channelĀ 0Ā andĀ channelĀ 2,Ā thenĀ theĀ OLTĀ 110Ā doesĀ soĀ byĀ transmittingĀ theĀ extendedĀ discoveryĀ gateĀ messageĀ 400,Ā theĀ extendedĀ gateĀ messageĀ 600,Ā orĀ theĀ extendedĀ gateĀ messageĀ 700Ā onĀ channelĀ 0.
InĀ aĀ secondĀ manner,Ā theĀ OLTĀ 110Ā transmitsĀ theĀ extendedĀ discoveryĀ gateĀ messageĀ 400,Ā theĀ extendedĀ gateĀ messageĀ 600,Ā andĀ theĀ extendedĀ gateĀ messageĀ 700Ā toĀ theĀ ONUĀ 120Ā onĀ allĀ channels.Ā Thus,Ā theĀ OLTĀ 110Ā treatsĀ allĀ channelsĀ equallyĀ andĀ duplicatesĀ theĀ extendedĀ discoveryĀ gateĀ messageĀ 400,Ā theĀ extendedĀ gateĀ messageĀ 600,Ā andĀ theĀ extendedĀ gateĀ messageĀ 700.Ā InĀ aĀ thirdĀ manner,Ā theĀ OLTĀ 110Ā transmitsĀ theĀ extendedĀ discoveryĀ gateĀ messageĀ 400,Ā theĀ extendedĀ gateĀ messageĀ 600,Ā andĀ theĀ extendedĀ gateĀ messageĀ 700Ā toĀ theĀ ONUĀ 120Ā onĀ theĀ channelĀ thatĀ theĀ OLTĀ 110Ā assignsĀ theĀ grantsĀ to.
UsingĀ theĀ extendedĀ discoveryĀ gateĀ messageĀ 400,Ā theĀ extendedĀ gateĀ messageĀ 600,Ā theĀ extendedĀ gateĀ messageĀ 700,Ā andĀ theĀ extendedĀ reportĀ messageĀ 900,Ā theĀ OLTĀ 110Ā andĀ theĀ ONUsĀ 120Ā mayĀ implementĀ powerĀ conservationĀ inĀ theĀ ONUsĀ 120.Ā WhenĀ trafficĀ isĀ light,Ā anĀ ONUĀ 120Ā entersĀ aĀ power-savingĀ mode.Ā TheĀ ONUĀ 120Ā periodicallyĀ transmitsĀ theĀ extendedĀ reportĀ messageĀ 900Ā toĀ theĀ OLTĀ 110Ā onĀ oneĀ channel,Ā forĀ instanceĀ channelĀ 1,Ā toĀ indicateĀ thatĀ theĀ otherĀ channels,Ā forĀ instanceĀ channelsĀ 0Ā andĀ 2-3,Ā areĀ inĀ aĀ power-savingĀ mode.Ā TheĀ ONUĀ 120Ā setsĀ aĀ valueĀ ofĀ theĀ  channelĀ assignmentĀ fieldĀ 935Ā toĀ 0000010Ā andĀ setsĀ valuesĀ ofĀ theĀ queueĀ #1Ā reportĀ fieldĀ 950,Ā theĀ queueĀ #2Ā reportĀ fieldĀ 955,Ā theĀ queueĀ #3Ā reportĀ fieldĀ 960,Ā theĀ queueĀ #4Ā reportĀ fieldĀ 965,Ā theĀ queueĀ #5Ā reportĀ fieldĀ 970,Ā theĀ queueĀ #6Ā reportĀ fieldĀ 975,Ā andĀ theĀ queueĀ #7Ā reportĀ fieldĀ 980Ā toĀ 0.
TheĀ OLTĀ 110Ā mayĀ desireĀ toĀ disableĀ transceiversĀ orĀ transmittersĀ ofĀ theĀ ONUĀ 120,Ā keepĀ aliveĀ theĀ ONUĀ 120,Ā orĀ wakeĀ upĀ theĀ ONUĀ 120.Ā IfĀ theĀ OLTĀ 110Ā desiresĀ toĀ disableĀ transceiversĀ orĀ transmittersĀ ofĀ theĀ ONUĀ 120,Ā thenĀ theĀ OLTĀ 110Ā mayĀ doĀ soĀ usingĀ theĀ extendedĀ discoveryĀ gateĀ messageĀ 400,Ā theĀ extendedĀ gateĀ messageĀ 600,Ā orĀ theĀ extendedĀ gateĀ messageĀ 700.Ā TheĀ discoveryĀ gateĀ messageĀ 400Ā mayĀ instructĀ theĀ ONUĀ 120Ā toĀ disableĀ allĀ transceiversĀ orĀ transmittersĀ exceptĀ aĀ transceiverĀ orĀ transmitterĀ correspondingĀ toĀ aĀ channelĀ indicatedĀ inĀ theĀ channelĀ assignmentĀ fieldĀ 430.Ā TheĀ extendedĀ gateĀ messageĀ 600Ā mayĀ instructĀ theĀ ONUĀ 120Ā toĀ disableĀ allĀ transceiversĀ orĀ transmittersĀ exceptĀ aĀ transceiverĀ orĀ transmitterĀ correspondingĀ toĀ aĀ channelĀ indicatedĀ inĀ theĀ channelĀ assignmentĀ fieldĀ 630.Ā TheĀ extendedĀ gateĀ messageĀ 700Ā mayĀ instructĀ theĀ ONUĀ 120Ā toĀ disableĀ allĀ transceiversĀ orĀ transmittersĀ exceptĀ transceiversĀ orĀ transmittersĀ correspondingĀ toĀ channelsĀ indicatedĀ inĀ theĀ channelĀ assignmentĀ fieldĀ #1Ā fieldĀ 717,Ā theĀ channelĀ assignmentĀ #2Ā fieldĀ 725,Ā theĀ channelĀ assignmentĀ #3Ā fieldĀ 733,Ā andĀ theĀ channelĀ assignmentĀ #4Ā fieldĀ 740.
IfĀ theĀ OLTĀ 110Ā desiresĀ toĀ keepĀ aliveĀ theĀ ONUĀ 120,Ā thenĀ theĀ OLTĀ 110Ā periodicallyĀ transmitsĀ toĀ theĀ ONUĀ 120Ā theĀ extendedĀ gateĀ messageĀ 600,Ā theĀ extendedĀ gateĀ messageĀ 700,Ā orĀ anotherĀ suitableĀ messageĀ withĀ aĀ firstĀ format.Ā ForĀ instance,Ā forĀ theĀ extendedĀ gateĀ messageĀ 600,Ā theĀ OLTĀ 110Ā setsĀ aĀ valueĀ ofĀ theĀ channelĀ assignmentĀ fieldĀ 630Ā toĀ allĀ 1sĀ andĀ aĀ valueĀ ofĀ theĀ numberĀ ofĀ grants/flagsĀ fieldĀ 635Ā toĀ 0.Ā ForĀ theĀ extendedĀ gateĀ messageĀ 700,Ā theĀ OLTĀ 110Ā setsĀ aĀ valueĀ ofĀ theĀ numberĀ ofĀ grants/flagsĀ fieldĀ 715Ā toĀ 0Ā andĀ setsĀ aĀ valueĀ ofĀ theĀ channelĀ assignmentĀ #1Ā fieldĀ 717,Ā theĀ channelĀ assignmentĀ #2Ā fieldĀ 725,Ā theĀ channelĀ assignmentĀ #3Ā fieldĀ 733,Ā andĀ theĀ channelĀ assignmentĀ #4Ā fieldĀ 740Ā toĀ allĀ 1s.
IfĀ theĀ OLTĀ 110Ā desiresĀ toĀ wakeĀ upĀ theĀ ONUĀ 120,Ā thenĀ theĀ OLTĀ 110Ā transmitsĀ toĀ theĀ ONUĀ 120Ā theĀ extendedĀ gateĀ messageĀ 600,Ā theĀ extendedĀ gateĀ messageĀ 700,Ā orĀ anotherĀ suitableĀ messageĀ withĀ aĀ secondĀ format.Ā ForĀ instance,Ā forĀ theĀ extendedĀ gateĀ messageĀ 600,Ā theĀ OLTĀ 110Ā setsĀ aĀ valueĀ ofĀ theĀ channelĀ assignmentĀ fieldĀ 630Ā toĀ 0000010Ā andĀ aĀ valueĀ ofĀ theĀ numberĀ ofĀ grants/flagsĀ fieldĀ 635Ā toĀ 1.Ā ForĀ theĀ extendedĀ gateĀ messageĀ 700,Ā theĀ OLTĀ 110Ā setsĀ aĀ valueĀ ofĀ theĀ numberĀ ofĀ grants/flagsĀ fieldĀ 715Ā toĀ 1Ā andĀ setsĀ aĀ valueĀ ofĀ theĀ channelĀ assignmentĀ #1Ā fieldĀ 717,Ā theĀ channelĀ assignmentĀ #2Ā fieldĀ 725,Ā theĀ channelĀ assignmentĀ #3Ā fieldĀ 733,Ā andĀ theĀ channelĀ assignmentĀ #4Ā fieldĀ 740Ā toĀ 0000010.
FIG.Ā 11Ā isĀ aĀ flowchartĀ illustratingĀ aĀ methodĀ 1100Ā ofĀ channelĀ bondingĀ inĀ aĀ multiple-wavelengthĀ PONĀ accordingĀ toĀ anĀ embodimentĀ ofĀ theĀ disclosure.Ā TheĀ OLTĀ 110Ā performsĀ theĀ methodĀ 1100.Ā AtĀ stepĀ 1110,Ā aĀ firstĀ channelĀ isĀ selectedĀ fromĀ amongĀ aĀ pluralityĀ ofĀ channelsĀ inĀ aĀ network.Ā ForĀ instance,Ā theĀ OLTĀ 110Ā selectsĀ channelĀ 1Ā fromĀ amongĀ channelsĀ 0-3Ā inĀ theĀ PONĀ 100.Ā AtĀ stepĀ 1120,Ā aĀ firstĀ messageĀ assigningĀ aĀ firstĀ grantĀ correspondingĀ toĀ aĀ firstĀ channelĀ isĀ generated.Ā ForĀ instance,Ā theĀ OLTĀ 110Ā generatesĀ theĀ extendedĀ discoveryĀ gateĀ messageĀ 400,Ā theĀ extendedĀ gateĀ messageĀ 600,Ā orĀ theĀ extendedĀ gateĀ messageĀ 700.Ā AtĀ stepĀ 1130,Ā theĀ firstĀ messageĀ isĀ transmitted.Ā ForĀ instance,Ā theĀ OLTĀ 110Ā transmitsĀ theĀ extendedĀ discoveryĀ gateĀ messageĀ 400,Ā theĀ extendedĀ gateĀ messageĀ 600,Ā orĀ theĀ extendedĀ gateĀ messageĀ 700Ā toĀ anĀ ONUĀ 120.Ā Finally,Ā atĀ stepĀ 1140,Ā aĀ secondĀ messageĀ isĀ receivedĀ onĀ theĀ firstĀ channelĀ andĀ inĀ responseĀ toĀ theĀ firstĀ message.Ā ForĀ instance,Ā theĀ OLTĀ 110Ā receivesĀ aĀ secondĀ messageĀ fromĀ theĀ ONUĀ 120Ā onĀ channelĀ 1.Ā TheĀ secondĀ messageĀ mayĀ beĀ theĀ extendedĀ reportĀ messageĀ 900.
FIG.Ā 12Ā isĀ aĀ schematicĀ diagramĀ ofĀ aĀ deviceĀ 1200Ā accordingĀ toĀ anĀ embodimentĀ ofĀ theĀ disclosure.Ā TheĀ deviceĀ 1200Ā mayĀ implementĀ theĀ disclosedĀ embodiments.Ā TheĀ deviceĀ 1200Ā comprisesĀ ingressĀ portsĀ 1210Ā andĀ anĀ RXĀ 1220Ā coupledĀ toĀ theĀ ingressĀ portsĀ 1210Ā forĀ receivingĀ dataļ¼›Ā aĀ processor,Ā logicĀ unit,Ā orĀ CPUĀ 1230Ā coupledĀ toĀ theĀ RXĀ 1220Ā toĀ processĀ theĀ dataļ¼›Ā aĀ TXĀ 1240Ā coupledĀ toĀ theĀ processorĀ 1230Ā andĀ egressĀ portsĀ 1250Ā coupledĀ toĀ theĀ TXĀ 1240Ā forĀ transmittingĀ theĀ data.Ā AĀ memoryĀ 1260Ā isĀ coupledĀ toĀ theĀ processorĀ 1230Ā forĀ storingĀ theĀ data.Ā TheĀ deviceĀ 1200Ā mayĀ alsoĀ compriseĀ OEĀ componentsĀ andĀ EOĀ componentsĀ coupledĀ toĀ theĀ ingressĀ portsĀ 1210,Ā theĀ RXĀ 1220,Ā theĀ TXĀ 1240,Ā andĀ theĀ egressĀ portsĀ 1250Ā forĀ ingressĀ orĀ egressĀ ofĀ opticalĀ orĀ electricalĀ signals.
TheĀ processorĀ 1230Ā isĀ anyĀ suitableĀ combinationĀ ofĀ hardware,Ā middleware,Ā firmware,Ā orĀ software.Ā TheĀ processorĀ 1230Ā comprisesĀ anyĀ combinationĀ ofĀ oneĀ orĀ moreĀ CPUĀ chips,Ā cores,Ā FPGAs,Ā ASICs,Ā orĀ DSPs.Ā TheĀ processorĀ 1230Ā communicatesĀ withĀ theĀ ingressĀ portsĀ 1210,Ā RXĀ 1220,Ā TXĀ 1240,Ā egressĀ portsĀ 1250,Ā andĀ memoryĀ 1260.Ā TheĀ processorĀ 1230Ā comprisesĀ aĀ channelĀ bondingĀ componentĀ 1270,Ā whichĀ implementsĀ theĀ disclosedĀ embodiments.Ā TheĀ inclusionĀ ofĀ theĀ channelĀ bondingĀ componentĀ 1270Ā thereforeĀ providesĀ aĀ substantialĀ improvementĀ toĀ theĀ functionalityĀ ofĀ theĀ deviceĀ 1200Ā andĀ effectsĀ aĀ transformationĀ ofĀ theĀ deviceĀ 1200Ā toĀ aĀ differentĀ state.Ā Alternatively,Ā theĀ memoryĀ 1260Ā storesĀ theĀ channelĀ bondingĀ componentĀ 1270Ā asĀ instructions,Ā andĀ theĀ processorĀ 1230Ā executesĀ thoseĀ instructions.
TheĀ memoryĀ 1260Ā comprisesĀ oneĀ orĀ moreĀ disks,Ā tapeĀ drives,Ā orĀ solid-stateĀ drives.Ā TheĀ deviceĀ 1200Ā mayĀ useĀ theĀ memoryĀ 1260Ā asĀ anĀ over-flowĀ dataĀ storageĀ deviceĀ toĀ storeĀ programsĀ whenĀ theĀ deviceĀ 1200Ā selectsĀ thoseĀ programsĀ forĀ executionĀ andĀ toĀ storeĀ instructionsĀ andĀ dataĀ thatĀ theĀ deviceĀ 1200Ā readsĀ duringĀ executionĀ ofĀ thoseĀ programs.Ā TheĀ memoryĀ 1260Ā mayĀ beĀ volatileĀ orĀ non-volatileĀ andĀ mayĀ beĀ anyĀ combinationĀ ofĀ ROM,Ā RAM,Ā TCAM,Ā orĀ SRAM.
InĀ anĀ exampleĀ embodiment,Ā theĀ deviceĀ 1200Ā includesĀ aĀ channelĀ selectionĀ moduleĀ selectingĀ aĀ firstĀ channelĀ fromĀ amongĀ aĀ pluralityĀ ofĀ channelsĀ inĀ aĀ network,Ā aĀ messageĀ generationĀ moduleĀ generatingĀ aĀ firstĀ messageĀ assigningĀ aĀ firstĀ grantĀ correspondingĀ toĀ theĀ firstĀ channel,Ā aĀ transmissionĀ moduleĀ transmittingĀ theĀ firstĀ message,Ā andĀ aĀ secondĀ messageĀ receptionĀ moduleĀ receivingĀ aĀ secondĀ messageĀ onĀ theĀ firstĀ channelĀ andĀ inĀ responseĀ toĀ theĀ firstĀ message.Ā InĀ someĀ embodiments,Ā theĀ deviceĀ 1200Ā mayĀ includeĀ otherĀ orĀ additionalĀ modulesĀ forĀ performingĀ anyĀ oneĀ ofĀ orĀ combinationĀ ofĀ stepsĀ describedĀ inĀ theĀ embodiments.Ā Further,Ā anyĀ ofĀ theĀ additionalĀ orĀ alternativeĀ embodimentsĀ orĀ aspectsĀ ofĀ theĀ method,Ā asĀ shownĀ inĀ anyĀ ofĀ theĀ figuresĀ orĀ recitedĀ inĀ anyĀ ofĀ theĀ claims,Ā areĀ alsoĀ contemplatedĀ toĀ includeĀ similarĀ modules.
InĀ anĀ exampleĀ embodiment,Ā anĀ apparatusĀ comprises:Ā aĀ processorĀ elementĀ configuredĀ to:selectĀ aĀ firstĀ channelĀ fromĀ amongĀ aĀ pluralityĀ ofĀ channelsĀ inĀ aĀ network,Ā andĀ generateĀ aĀ firstĀ messageĀ assigningĀ aĀ firstĀ grantĀ correspondingĀ toĀ theĀ firstĀ channelļ¼›Ā aĀ transmitterĀ elementĀ coupledĀ toĀ theĀ processorĀ elementĀ andĀ configuredĀ toĀ transmitĀ theĀ firstĀ messageļ¼›Ā andĀ aĀ receiverĀ elementĀ coupledĀ toĀ theĀ processorĀ elementĀ andĀ configuredĀ toĀ receiveĀ aĀ secondĀ messageĀ onĀ theĀ firstĀ channelĀ andĀ inĀ responseĀ toĀ theĀ firstĀ message.
AĀ firstĀ componentĀ isĀ directlyĀ coupledĀ toĀ aĀ secondĀ componentĀ whenĀ thereĀ areĀ noĀ interveningĀ components,Ā exceptĀ forĀ aĀ line,Ā aĀ trace,Ā orĀ anotherĀ mediumĀ betweenĀ theĀ firstĀ componentĀ andĀ theĀ secondĀ component.Ā TheĀ firstĀ componentĀ isĀ indirectlyĀ coupledĀ toĀ theĀ secondĀ componentĀ whenĀ thereĀ areĀ interveningĀ componentsĀ otherĀ thanĀ aĀ line,Ā aĀ trace,Ā orĀ anotherĀ mediumĀ betweenĀ theĀ firstĀ componentĀ andĀ theĀ secondĀ component.Ā TheĀ termĀ ā€œcoupledā€Ā andĀ itsĀ variantsĀ includeĀ bothĀ directlyĀ coupledĀ andĀ indirectlyĀ coupled.Ā TheĀ useĀ ofĀ theĀ termĀ ā€œaboutā€Ā meansĀ aĀ rangeĀ includingĀ Ā±10ļ¼…ofĀ theĀ subsequentĀ numberĀ unlessĀ otherwiseĀ stated.
WhileĀ severalĀ embodimentsĀ haveĀ beenĀ providedĀ inĀ theĀ presentĀ disclosure,Ā itĀ mayĀ beĀ understoodĀ thatĀ theĀ disclosedĀ systemsĀ andĀ methodsĀ mightĀ beĀ embodiedĀ inĀ manyĀ otherĀ specificĀ formsĀ withoutĀ departingĀ fromĀ theĀ spiritĀ orĀ scopeĀ ofĀ theĀ presentĀ disclosure.Ā TheĀ presentĀ examplesĀ areĀ toĀ beĀ consideredĀ asĀ illustrativeĀ andĀ notĀ restrictive,Ā andĀ theĀ intentionĀ isĀ notĀ toĀ beĀ limitedĀ toĀ theĀ  detailsĀ givenĀ herein.Ā ForĀ example,Ā theĀ variousĀ elementsĀ orĀ componentsĀ mayĀ beĀ combinedĀ orĀ integratedĀ inĀ anotherĀ systemĀ orĀ certainĀ featuresĀ mayĀ beĀ omitted,Ā orĀ notĀ implemented.
InĀ addition,Ā techniques,Ā systems,Ā subsystems,Ā andĀ methodsĀ describedĀ andĀ illustratedĀ inĀ theĀ variousĀ embodimentsĀ asĀ discreteĀ orĀ separateĀ mayĀ beĀ combinedĀ orĀ integratedĀ withĀ otherĀ systems,Ā components,Ā techniques,Ā orĀ methodsĀ withoutĀ departingĀ fromĀ theĀ scopeĀ ofĀ theĀ presentĀ disclosure.Ā OtherĀ itemsĀ shownĀ orĀ discussedĀ asĀ coupledĀ orĀ directlyĀ coupledĀ orĀ communicatingĀ withĀ eachĀ otherĀ mayĀ beĀ indirectlyĀ coupledĀ orĀ communicatingĀ throughĀ someĀ interface,Ā device,Ā orĀ intermediateĀ componentĀ whetherĀ electrically,Ā mechanically,Ā orĀ otherwise.Ā OtherĀ examplesĀ ofĀ changes,Ā substitutions,Ā andĀ alterationsĀ areĀ ascertainableĀ byĀ oneĀ skilledĀ inĀ theĀ artĀ andĀ mayĀ beĀ madeĀ withoutĀ departingĀ fromĀ theĀ spiritĀ andĀ scopeĀ disclosedĀ herein.

Claims (20)

  1. AnĀ apparatusĀ comprising:
    aĀ processorĀ configuredĀ to:
    selectĀ aĀ firstĀ channelĀ fromĀ amongĀ aĀ pluralityĀ ofĀ channelsĀ inĀ aĀ network,Ā and
    generateĀ aĀ firstĀ messageĀ assigningĀ aĀ firstĀ grantĀ correspondingĀ toĀ theĀ firstĀ channelļ¼›
    aĀ transmitterĀ coupledĀ toĀ theĀ processorĀ andĀ configuredĀ toĀ transmitĀ theĀ firstĀ messageļ¼›Ā and
    aĀ receiverĀ coupledĀ toĀ theĀ processorĀ andĀ configuredĀ toĀ receiveĀ aĀ secondĀ messageĀ onĀ theĀ firstĀ channelĀ inĀ responseĀ toĀ theĀ firstĀ message.
  2. TheĀ apparatusĀ ofĀ claimĀ 1,Ā whereinĀ theĀ firstĀ messageĀ isĀ aĀ discoveryĀ gateĀ messageĀ comprisingĀ aĀ channelĀ assignmentĀ field,Ā aĀ grantĀ startĀ timeĀ field,Ā andĀ aĀ channelĀ informationĀ field,Ā whereinĀ theĀ channelĀ assignmentĀ fieldĀ indicatesĀ theĀ firstĀ channelĀ forĀ upstreamĀ transmission,Ā whereinĀ theĀ grantĀ startĀ timeĀ fieldĀ indicatesĀ whenĀ toĀ transmitĀ onĀ theĀ firstĀ channel,Ā andĀ whereinĀ theĀ channelĀ informationĀ fieldĀ indicatesĀ channel-relatedĀ information.
  3. TheĀ apparatusĀ ofĀ claimĀ 2,Ā whereinĀ theĀ channel-relatedĀ informationĀ isĀ atĀ leastĀ oneĀ ofĀ aĀ channelĀ rate,Ā aĀ channelĀ association,Ā orĀ aĀ channelĀ priority.
  4. TheĀ apparatusĀ ofĀ anyĀ ofĀ claimsĀ 1Ā toĀ 3,Ā whereinĀ theĀ firstĀ messageĀ isĀ aĀ gateĀ messageĀ comprisingĀ aĀ channelĀ assignmentĀ fieldĀ andĀ aĀ grantĀ startĀ timeĀ field,Ā whereinĀ theĀ channelĀ assignmentĀ fieldĀ indicatesĀ theĀ firstĀ channelĀ forĀ upstreamĀ transmission,Ā andĀ whereinĀ theĀ grantĀ startĀ timeĀ fieldĀ indicatesĀ whenĀ toĀ transmitĀ onĀ theĀ firstĀ channel.
  5. TheĀ apparatusĀ ofĀ anyĀ ofĀ claimsĀ 1Ā toĀ 4,Ā whereinĀ theĀ secondĀ messageĀ isĀ aĀ reportĀ messageĀ comprisingĀ aĀ channelĀ assignmentĀ fieldĀ andĀ aĀ queueĀ reportĀ field,Ā whereinĀ theĀ channelĀ assignmentĀ fieldĀ indicatesĀ theĀ firstĀ channel,Ā andĀ whereinĀ theĀ queueĀ reportĀ fieldĀ indicatesĀ aĀ queueĀ reportĀ forĀ theĀ firstĀ channel.
  6. TheĀ apparatusĀ ofĀ anyĀ ofĀ claimsĀ 1Ā toĀ 5,Ā whereinĀ theĀ processorĀ isĀ furtherĀ configuredĀ toĀ selectĀ aĀ secondĀ channelĀ fromĀ amongĀ theĀ channels,Ā andĀ whereinĀ theĀ firstĀ messageĀ furtherĀ assignsĀ aĀ secondĀ grantĀ correspondingĀ toĀ theĀ secondĀ channel.
  7. TheĀ apparatusĀ ofĀ anyĀ ofĀ claimsĀ 1Ā toĀ 6,Ā whereinĀ theĀ transmitterĀ isĀ furtherĀ configuredĀ toĀ transmitĀ theĀ firstĀ messageĀ onĀ theĀ firstĀ channel.
  8. TheĀ apparatusĀ ofĀ anyĀ ofĀ claimsĀ 1Ā toĀ 7,Ā whereinĀ theĀ transmitterĀ isĀ furtherĀ configuredĀ toĀ transmitĀ theĀ firstĀ messageĀ onĀ aĀ secondĀ channelĀ fromĀ amongĀ theĀ channels.
  9. TheĀ apparatusĀ ofĀ anyĀ ofĀ claimsĀ 1Ā toĀ 8,Ā whereinĀ theĀ apparatusĀ isĀ anĀ opticalĀ lineĀ terminalĀ (OLT)Ā ,Ā andĀ whereinĀ theĀ networkĀ isĀ aĀ passiveĀ opticalĀ networkĀ (PON)Ā .
  10. TheĀ apparatusĀ ofĀ claimĀ 9,Ā whereinĀ theĀ transmitterĀ isĀ furtherĀ configuredĀ toĀ furtherĀ transmitĀ theĀ firstĀ messageĀ toĀ anĀ opticalĀ networkĀ unitĀ (ONU)Ā comprisingĀ aĀ pluralityĀ ofĀ ONUĀ transmitters,Ā whereinĀ theĀ ONUĀ transmittersĀ compriseĀ aĀ firstĀ transmitterĀ correspondingĀ toĀ theĀ firstĀ channel,Ā andĀ whereinĀ theĀ firstĀ messageĀ instructsĀ theĀ ONUĀ toĀ disableĀ allĀ ofĀ theĀ ONUĀ transmittersĀ exceptĀ forĀ theĀ firstĀ transmitter.
  11. AĀ methodĀ comprising:
    selectingĀ aĀ firstĀ channelĀ fromĀ amongĀ aĀ pluralityĀ ofĀ channelsĀ inĀ aĀ networkļ¼›
    generatingĀ aĀ firstĀ messageĀ assigningĀ aĀ firstĀ grantĀ correspondingĀ toĀ theĀ firstĀ channelļ¼›
    transmittingĀ theĀ firstĀ messageļ¼›Ā and
    receivingĀ aĀ secondĀ messageĀ onĀ theĀ firstĀ channelĀ andĀ inĀ responseĀ toĀ theĀ firstĀ message.
  12. TheĀ methodĀ ofĀ claimĀ 11,Ā whereinĀ theĀ firstĀ messageĀ isĀ aĀ discoveryĀ gateĀ messageĀ comprisingĀ aĀ channelĀ assignmentĀ field,Ā aĀ grantĀ startĀ timeĀ field,Ā andĀ aĀ channelĀ informationĀ field,Ā whereinĀ theĀ channelĀ assignmentĀ fieldĀ indicatesĀ theĀ firstĀ channelĀ forĀ upstreamĀ transmission,Ā whereinĀ theĀ grantĀ startĀ timeĀ fieldĀ indicatesĀ whenĀ toĀ transmitĀ onĀ theĀ firstĀ channel,Ā andĀ whereinĀ theĀ channelĀ informationĀ fieldĀ indicatesĀ channel-relatedĀ information.
  13. TheĀ methodĀ ofĀ anyĀ ofĀ claimsĀ 11Ā toĀ 12,Ā whereinĀ theĀ firstĀ messageĀ isĀ aĀ gateĀ messageĀ comprisingĀ aĀ channelĀ assignmentĀ fieldĀ andĀ aĀ grantĀ startĀ timeĀ field,Ā whereinĀ theĀ channelĀ assignmentĀ fieldĀ indicatesĀ theĀ firstĀ channelĀ forĀ upstreamĀ transmission,Ā andĀ whereinĀ theĀ grantĀ startĀ timeĀ fieldĀ indicatesĀ whenĀ toĀ transmitĀ onĀ theĀ firstĀ channel.
  14. TheĀ methodĀ ofĀ anyĀ ofĀ claimsĀ 11Ā toĀ 13,Ā whereinĀ theĀ secondĀ messageĀ isĀ aĀ reportĀ messageĀ comprisingĀ aĀ channelĀ assignmentĀ fieldĀ andĀ aĀ queueĀ reportĀ field,Ā whereinĀ theĀ channelĀ assignmentĀ fieldĀ indicatesĀ theĀ firstĀ channel,Ā andĀ whereinĀ theĀ queueĀ reportĀ fieldĀ indicatesĀ aĀ queueĀ reportĀ forĀ theĀ firstĀ channel.
  15. TheĀ methodĀ ofĀ anyĀ ofĀ claimsĀ 11Ā toĀ 14,Ā furtherĀ comprisingĀ selectingĀ aĀ secondĀ channelĀ fromĀ amongĀ theĀ channels,Ā whereinĀ theĀ firstĀ messageĀ furtherĀ assignsĀ aĀ secondĀ grantĀ correspondingĀ toĀ theĀ secondĀ channel.
  16. TheĀ methodĀ ofĀ anyĀ ofĀ claimsĀ 11Ā toĀ 15,Ā whereinĀ anĀ opticalĀ lineĀ terminalĀ (OLT)Ā implementsĀ theĀ method,Ā whereinĀ theĀ networkĀ isĀ aĀ passiveĀ opticalĀ networkĀ (PON)Ā ,Ā whereinĀ theĀ transmittingĀ comprisesĀ transmittingĀ theĀ firstĀ messageĀ toĀ anĀ opticalĀ networkĀ unitĀ (ONU)Ā comprisingĀ aĀ pluralityĀ ofĀ ONUĀ transmitters,Ā whereinĀ theĀ ONUĀ transmittersĀ compriseĀ aĀ firstĀ transmitterĀ correspondingĀ toĀ theĀ firstĀ channel,Ā andĀ whereinĀ theĀ firstĀ messageĀ instructsĀ theĀ ONUĀ toĀ disableĀ allĀ ofĀ theĀ ONUĀ transmittersĀ exceptĀ forĀ theĀ firstĀ transmitter.
  17. AnĀ opticalĀ networkĀ unitĀ (ONU)Ā comprising:
    aĀ receiverĀ configuredĀ toĀ receiveĀ aĀ firstĀ messageĀ assigningĀ aĀ firstĀ grantĀ correspondingĀ toĀ aĀ firstĀ channelĀ selectedĀ fromĀ amongĀ aĀ pluralityĀ ofĀ channelsļ¼›
    aĀ processorĀ coupledĀ toĀ theĀ receiverĀ andĀ configuredĀ to:
    processĀ theĀ firstĀ message,Ā and
    generateĀ aĀ secondĀ messageļ¼›Ā and
    aĀ transmitterĀ coupledĀ toĀ theĀ processorĀ andĀ configuredĀ toĀ transmitĀ theĀ secondĀ messageĀ onĀ theĀ firstĀ channelĀ andĀ accordingĀ toĀ theĀ firstĀ grant.
  18. TheĀ ONUĀ ofĀ claimĀ 17,Ā whereinĀ theĀ firstĀ messageĀ furtherĀ assignsĀ aĀ secondĀ grantĀ correspondingĀ toĀ aĀ secondĀ channelĀ selectedĀ fromĀ amongĀ theĀ channels,Ā whereinĀ theĀ processorĀ isĀ furtherĀ configuredĀ toĀ generateĀ aĀ thirdĀ message,Ā andĀ whereinĀ theĀ transmitterĀ isĀ furtherĀ configuredĀ toĀ transmitĀ theĀ thirdĀ messageĀ onĀ theĀ secondĀ channelĀ andĀ accordingĀ toĀ theĀ secondĀ grant.
  19. TheĀ ONUĀ ofĀ anyĀ ofĀ claimsĀ 17Ā toĀ 18,Ā whereinĀ theĀ firstĀ messageĀ isĀ aĀ gateĀ messageĀ comprisingĀ aĀ channelĀ assignmentĀ fieldĀ andĀ aĀ grantĀ startĀ timeĀ field,Ā whereinĀ theĀ channelĀ assignmentĀ fieldĀ indicatesĀ theĀ firstĀ channelĀ forĀ upstreamĀ transmission,Ā andĀ whereinĀ theĀ grantĀ startĀ timeĀ fieldĀ indicatesĀ whenĀ toĀ transmitĀ onĀ theĀ firstĀ channel.
  20. TheĀ ONUĀ ofĀ anyĀ ofĀ claimsĀ 17Ā toĀ 19,Ā whereinĀ theĀ secondĀ messageĀ isĀ aĀ reportĀ messageĀ comprisingĀ aĀ channelĀ assignmentĀ fieldĀ andĀ aĀ queueĀ reportĀ field,Ā whereinĀ theĀ channelĀ assignmentĀ fieldĀ indicatesĀ theĀ firstĀ channel,Ā andĀ whereinĀ theĀ queueĀ reportĀ fieldĀ indicatesĀ aĀ queueĀ reportĀ forĀ theĀ firstĀ channel.
PCT/CN2017/081885 2016-04-28 2017-04-25 Channel bonding in multiple-wavelength passive optical networks (pons) WO2017186098A1 (en)

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CN201780025903.7A CN109075887B (en) 2016-04-28 2017-04-25 Channel bonding in a multi-wavelength Passive Optical Network (PON)
JP2018556403A JP6726303B2 (en) 2016-04-28 2017-04-25 Channel bonding in multi-wavelength passive optical network (PON)
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US10763988B2 (en) 2020-09-01

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