TW201145859A - Passive optical network system, optical network unit, optical line terminal and communication method - Google Patents

Abstract

A passive optical network system having an optical network unit 2 and an optical line terminal 1, the optical line terminal 1 comprising a buffer area 10 for storing downloaded data, a transmission timing decision section 14 for deciding the data transmission timing of the downloaded data in accordance with renew cycle of each frequency band and a passive optical network controlling section 19 for attaching the data transmission timing to a GATE frame and transmitting the GATE frame, and the optical network unit 2 comprising an optical receiver 27 for receiving the downloaded data received from the optical line terminal 1, a frame dividing section 28 and a receive timing instructing section 29 for shifting the optical receiver 27 and the frame dividing section 28 to a power-saving state or a normal state in accordance with the data transmission timing included in the GATE frame.

Description

201145859 VI. Description of the Invention: [Technical Field] The present invention relates to a PON (Passive Optical Network) passive optical fiber composed of 0LT (0ptical Line Terminal) and 0NU (0ptioal Network Unit) Network) system. [Prior Art] As an access network connecting the office side and the user side, a PON system which is one of FTTH (Fiber TO The Home) is rapidly spreading based on the viewpoint of high speed and economy. In the PON system, the office side device (0 L T) is connected to a plurality of user side devices (0NU) by dividing the signal output into multiplexed optical fibers of a plurality of optical fibers. At 0NU, TE (terrminal Equipment, terminal equipment) is connected via, for example, a LAN winding. Hgw (Home Gate Way), VoIP-TA (Voice over Internet Protocol-Terminal Adapter), PC (personal computer), etc. are equivalent to te. It is set to 0NU in the user's home, in order to respond to the need for instant services such as optical telephones. Even if you are not in standby for data communication, you must always connect with 0LT and ΤΕ. Therefore, there is a problem that the power consumption of the NU becomes large. In order to solve this problem, a new communication protocol and 0AM are defined in the following Non-Patent Document 1 (0peration Administration and

Maintenance, Operation, Management, and Maintenance messages are transmitted from the 〇NU transfer to sleep mode, and 〇LT is permitted to operate in sleep mode for 〇NU. In this manner, in the method described in the following Non-Patent Document 1, the ONU suppresses unnecessary power consumption of 322663 4 201145859 when communication is not performed. Further, in the following Patent Document 1, a method is disclosed in which, in an emergency such as a disaster, when the power is turned off and the 〇NU is driven by a battery, the ONU is operated by a power saving method in order to secure a life line. . Further, in the following Patent Document 2, a method is disclosed in which the ONU monitors the communication in the downward direction (in the direction of the user side device) and reduces the power consumption in accordance with the reception condition of the user side device. Further, in the following Patent Document 3, 'disclose a method' is to cause the ONU to monitor the logical chain and the state of the physical chain of the system, and to shift the mounted circuit to low power in a state where the logical chain and the physical chain are cut off. Control the way the mode is consumed. (Patent Document 1) Japanese Laid-Open Patent Publication No. 2009-170986 (Patent Document 3) JP-A-2008-170986 (Patent Document 3) JP-A-2008-113193 Patent Document] (Non-Patent Document 1) ITU-T (International Telecommunication Union Telecommunication Standardization Sector) Standardization Submission SG15Q2 Intended type of document (RC-TD): GR-4, "ONU power-save annex", PMC-Sierra, April [Explanation] [Problem to be solved by the invention] 5 322663 201145859 However, in the method described in the above non-patent document, 〇NU only deny the normal mode (a state in which reception and transmission can be performed) and the sleep mode. A state without distinction between uploading communication (direction from 〇NU to 〇LT) and downlink communication (direction from 0LT to 0NU). Therefore, for example, when uploading communication, it is necessary to operate the downlink communication circuit, and conversely, when the communication is downlinked, it is necessary to operate the upload communication circuit. Therefore, there is a problem of low power efficiency. Further, in the method described in the above Non-Patent Document 1, a dedicated frame for signal handover for performing sleep control is used between 〇 LT ” 0NU. Therefore, excessive use is generated for performing sleep control. The problem of the communication band is further described in the method of the above-mentioned patent document, which is to perform only the minimum necessary communication processing function such as a telephone, and to extend the frequency update cycle as much as possible. The communication for device control is not disclosed. Therefore, in the method of the above Patent Document 2, the multi-cast frame (multiCast frame) is emphasized. In the multi-point transmission frame communication, the multi-point transmission circuit is used for power saving. Therefore, there is no power saving in the multi-point transmission signal, and in addition, the communication in the multi-secret transmission frame cannot be realized low. In addition to the method of reading the method of the above patent, there is a problem that the device, the line cut is generated as a conversion trigger into a low-secret power mode. Method: while maintaining continuous communication and making low power consumption. The present invention is based on the above problems, and its purpose is to provide a 322663 6 201145859 PON system, user side device, side device and power saving rate. In order to solve the above problems and achieve the goal, the (Passive Optical Network) system has: 本0 本 本 ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ;褒 个 个 用户 用户 且 且 且 , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , The transmission period 'and the period before the period before the σΡ: is notified as the result of the band allocation to the transmission of the above-mentioned pass-through material, and the above-mentioned device is provided with the remaining means, which will be the former & Receiving the fascinating data material received by the side device; and the state, means, according to the packet: transmitting the foregoing data in the foregoing band allocation result (4), transferring the foregoing receiving to the power saving state or the ordinary [Effect of the Invention] The Ρ0Ν system of the present invention can achieve the effect of improving the power saving efficiency. [Embodiment] Hereinafter, the implementation of the Ν0Ν system, the user side device, the office side device, and the communication method of the present invention will be described based on the drawings. The present invention is not limited to the embodiment. (First embodiment) FIG. 1 is a structural view showing a first embodiment of the 本0Ν system of the present invention. The Ρ0Ν system is composed of 〇LT1 and ONU2 connected to 0LT1 via the splitter 3. In addition, '0LT1 322663 7 201145859 is connected to the upper device 4, and 〇NU2 is connected to the lower device 5. In the first drawing, although only the i-unit 0NU2 is described, the number of the 0NU2 connected to the 0LT1 via the diplexer 3 may be any number of one or more. 0LT1 is a buffer 10, a write control unit u, a buffer management unit 12, a read control unit 13, a transfer timing determining unit 14, a frame multiplexing unit 15, an optical transmitter 16, an optical receiver 17, and a frame. The separation unit 18 and the p〇N control 19 are configured. The buffer buffer 10 is a buffer for temporarily storing the downlink data received by the host device 4 and transmitted to (10). The write control unit 丨丨 controls the writing of data to the buffer 10, and the read control unit 13 controls the reading of the data stored in the buffer. The buffer management unit 12 manages the amount of data stored in the buffer 1 based on the write information of the write control unit u and the read control unit 13. The frame multiplexer 15 generates a user frame storing the downloaded data read from the buffer 1 by the read control unit 13, and multiplexes the generated user frame and the control frame. The optical transmitter 16 converts the multiplexed frame of the electrical signal into an optical signal and transmits the final ONU 2 via the splitter 3. Further, the transmission timing determination unit 14 determines the transmission timing of the downlink data based on the amount of data (the downlink buffer amount) stored in the buffer 10 notified by the buffer management unit, and notifies the control unit of the determined transmission timing. 19. The PON controller 19 performs predetermined processing according to the control frame received from 0Νϋ2, and generates a control frame to be transmitted to the 〇NU2, and allocates a frequency band for uploading the data to the ONU2 (transmission time 322663 8 201145859 band) ). The optical receiver 17 converts the optical signal received from the UI NU2 into an electrical signal and outputs it to the frame separating portion 18. The frame separating unit 18 separates the power s number received from the optical receiver 17 into the control frame and the user frame, and outputs the control frame to the control unit 19, and transmits the user frame to the upper device 4. ° (MI2 is composed of buffer 20, write control unit 2, buffer management unit 22, read control unit 23, frame multiplex unit 24, optical transmitter 25, just control P 26 optical receiver 27, frame The separation unit 28 and the reception timing instruction unit 29 are configured. The buffer 2G is a buffer for temporarily storing the uploaded data (data transmitted to the LT1) received from the lower device 5. The write control 21 controls the writing of data to the buffer. The area 2G' and the read control unit 23 control the reading of the data stored in the buffer area 2. The buffer management unit 22 manages the write information of the write control unit 21 and the read information of the read control unit 23. The amount of data stored in the buffer 20. The frame multiplexer 24 generates a user frame material storing the uploaded data read from the buffer 20 by the read control unit 23, which means that the generated user is controlled and controlled. The bribe is multiplexed. The optical transmitter 25 will be processed after the electrical signal. The 柩 is converted into an optical signal and sent to the OLT 1 via the splitter 3. The optical receiver 27 converts the optical signal received by the OLT 1 into an electrical signal and = outputs the frame separation unit 28. The frame separation unit 28 will play the optical receiver. The received electrical signal is separated into a control frame and a user frame, and the control signal is sent out to the P0N control unit 26, and the user frame is transmitted to the lower device 5. 'Bus off the knife. P 28 is used for The frequency band of the control frame transmitted by the 0LT1 is notified to the Gm frame of the control frame, and is also output to the sequence indication unit 29. ii 卜 &

W 1 in the present embodiment, as described later, in GATE » ', not only the same frequency band allocation result as that of the conventionally transmitted material from 〇NU2 but also the transfer from 〇LTi to circle 2 is stored. The information of the time of the pass-through material is transmitted as a downlink. The control unit 26 generates a predetermined geography based on the control frame received from the 〇LT1 and transmits it to the control frame of the OLT1. Further, the P0N unit 26 notifies the upload buffer amount based on the data stored in the buffer volume (upload buffer amount) notified from the buffer management unit 22, and requests the frequency frame to belong to the control frame of the control frame. Produced. Further, the reception timing instruction unit (state control means) 29 receives the reception time zone of the optical signal from 〇m based on the GATE frame transmitted from the (10), and obtains the reception time band at the time of the reception. The optical connection "27" and the frame separation unit 28 are activated in a manner that can be received. Also. In general, since the predetermined preparation period is required after the photoreceiver 27 or the like is activated and is actually receivable, the reception timing instruction unit 29 advances the optical receiver 27 and the like with respect to the start time of the reception time zone. Time to activate. Further, when the reception time zone is completed, the reception timing instruction unit 29 shifts the optical receiver 27 and the armature separation unit 28 to the power saving mode in the state of power saving (power saving in the downward transmission direction). Regarding the method of power saving of the optical receiver 27 and the frame separating unit 28, any method can be used, but in this case, power supply gating, clock gating, and the like are used for 322663 10 201145859 _ power saving. In addition, the PON control unit 26 uploads the components required for the transmission in the time zone of the (4) line uploading according to the allocation result notified by the GATE frame (for the uploaded data material) (the optical transmitter 25, the frame multiplexing unit) ^ and 23, etc.) to save power (uploading direction power saving). In addition, in the two-state f, it is assumed that the power saving in the uploading direction and the above-described downstream raining, the power saving of the I-electrode Μ receiver 27 and the frame separating unit 28 may be performed only. The power saving of the direction. Furthermore, the component of the power-saving == element can be set as long as the element is made. In the 0m of the composition of the other side of the village, the P〇N control unit 19 also targets the second-two = electrification. In addition, the optical transmitter 16, the signal U, and the read control unit 13 perform the transmitter 16 and the frame multi-TM reading for the non-transmission first signal frame multiplexer 15 and the 1+^ determination unit 14. This is done; two: =: again, the constituent elements of ', and as long as the above-mentioned structure = medium; all of the other components can be saved. The above may be used, and the operation of this embodiment will be described next. Figure 2 shows the implementation 322663

II 201145859 An example of an action in the band 1 update cycle. Band allocation is performed as a unit in the band update period of the system. As shown in Fig. 2, the band update period can be divided into a period of blood flow during the data transmission period. In the next-weekly _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ In the band update period, the 0NU2 system receives the GATE frame received from itself (4), and transmits a RepGrtm frame storing the upload buffer amount of itself for 〇m. In addition, the time of the second transmission is, for example, a time stamp called "- gamma. The time stamp" is used to MPCP (Multi p〇int).

The time specified by the Protoco 1 'Multipoint Control Protocol' and synchronized with _2. In addition, the continuous transmission time is, for example, the TQ of the processing unit belonging to the MPCP (Time calls her, time ~ amount). Although the continuous transmission time is stored as the data transmission amount, the data transmission speed can be converted into the continuous transmission time. The data line 0LT1 is allocated in the next-band update week according to the upload buffer amount included in the previous-band update cycle, and the frequency band is allocated to each _ during the transmission period (start transmission = and hold) , allocation of the transmission time of the shell) 'At the same time, the device itself in the next frequency band is allocated to each (10) time. (4) Using the GATE frame during the next cycle action decision, the band allocation result is notified to each Nu. 322663 12 201145859 During the period of transit, 〇NU2 is based on the transmission start time and continuous transmission specified by the previous band update =::= box. ^ ί 〇 LTl ° In addition, the data transmission period time, ^ Under the w _ band update period allocation, the transmission of the data will be transmitted to the _ under the _? To transfer. Again, the action with the update cycle is the same as the normal one. (4) In the 楂, 、, real & modal form, the GATE frame at the beginning of the transmission of the notification upload data and the time of the next ancestor transmission, the transmission period of the transmission frame of the 0LT1 transmission (subscribe to the user frame of the transmission) (When the transmission time is started and the transmission is continued, in the present embodiment, in the first band update period (between data), the first lower transmission frame will be transmitted and the last transmission will be transmitted = the continuous transmission time. In addition, the continuous transmission time is notified, so that the total billet $ transmitted in one band update period is notified. In addition, after the GATE frame is added, the time after the LT1 transmits the GATE frame is added. Figure 3 is a diagram showing an example of the configuration of the GATE frame of the present embodiment. As shown in Fig. 3, the GATE frame of the present embodiment includes header information including the receiving end, the type of the frame, and the time, and uploads and transmits ttfi. And send and transmit information. The upload and transfer information is the same as the prior art, including QLT1 assigned to

0NU2 upload data start transmission time and continuous transmission time. The next transmission is divided into two types: information during the data transmission period and information during the action determination period. The data transmission period information is included in the next frequency band update period 0LT1. The transmission time and the continuous transmission time of the 0NU2 transmission downlink data are transmitted. In addition, the information of the action determination period is related to the information of the (transmission band allocation) time zone of the GATE 322663 13 201145859 frame, which includes the start transmission time and the continuous transmission time of the GATE frame ((^>1£ frame) Length: gate length). In 0NU2, 'when receiving the GATE frame illustrated in Fig. 3, the time zone in which the data to be transmitted should be received can be grasped. Therefore, as described above, the reception timing can be based on the display portion 29 The negative sfl determines the reception time zone during the transmission of the information transmitted under the GATE frame, and the relevant parts of the downlink reception (the optical receiver 27 and the frame are received in such a manner that the reception time band can be received) The separation unit 28: The following is simply referred to as the lower transmission receiving unit to save power or activate. In addition, the 0NU2 must activate the downlink receiving unit in order to receive the gate frame. In the present embodiment, the QLT1 will be in advance. During the transmission period (10), the data is transmitted to the burst transmission. Then, as the action of transmitting the information, the information is determined during the period of the transmission. The time of transmission and transmission is notified to 'make the time at which the GATEm box should be received after _2 +. Therefore, _2 is stored in the time zone other than the time zone of the information transmission during the transmission of the information transmitted by the downlink. The time zone other than the time when the GA τ E frame is received can be used to electrify the downstream material. In addition, the data is not transmitted in the 0LT1, and the i gate frame is not transmitted. Each part of the transmission of the downlink data (the optical transmitter 16, the frame multiplexer 15, the read control unit 13, etc.) is saved. In addition, the related data is uploaded in the p〇N system. In the 0NU2 towel, the parts related to the upload and delivery (optical transmitter 25, = work department 24, readout control unit 23, etc.) can be saved according to the uploading and receiving 322663 14 201145859 information contained in the GATE frame. The detailed operation of this embodiment will be described in detail. A power-saving control diagram of the system of the present embodiment is shown. First, according to Fig. 4, the operation of the OLT 1 is first described. Decision department 14 will Whether the current time is in the operation, : = _) ' At the time of the non-action determination time (step ^ In addition, the operation determination time is after the operation is performed, and the control unit 19 transmits the time frame to the time frame = For the transmission of the time-lapse mosquitoes 14. The action is determined (4) and the GATE frame is transmitted through a band update cycle, which is set according to each (4). As illustrated in Figure 3, GLT1 uses GAT = new cycle to transmit information. The transmission operation determines the period information, and the time when the band update processing is performed as the next transmission, and the current time of the band update processing is the operation determination time (the step determination unit 14 receives 1 W from the buffer unit 12, and transmits the time) The total frame storage amount of the rushing area 10 is s铗/, impulse (stored in the mitigation unit 14 according to the amount of downlink buffer, and the mosquito determines the transmission time and the data transmission amount according to the deletion transmission timing (corresponding to the beginning of the transmission data, the sub-interval) ) (step S3). This 322663 15 201145859 In addition, the decision to transfer the data at the beginning of the transmission time is maintained in advance. The call transmission amount is set to be next. The transmission timing determination unit 14 determines whether or not the operation transmission time has elapsed (the operation of the GATE frame transmitted to the ONU2, 曰=:: one does not become the operation: when the == (step S4 No), Step S4 is repeated. When the transmission determination time period is reached, the transmission block (downlink transmission unit) transfers the transmission to the next transmission (step S5) 1 and then transfers it to be executable. The transmission start time and the data transmission of the transmission data are as follows: Step S3 is determined to be 19, and the reward control unit 19 will be given a smattering amount to the control unit, as the information for transmitting the information to the next pass, and the data transmission control unit 19 Also decide the next-gate frame. At this time, the action of ' _ determines the time to take the corresponding action frame, and (4) the frame to make the decision period after the information is TE (step S6). And the optical transmitter 16 transmits to 0NU2 Ρ 0Ν When the control unit 19 indicates the transmission of the GATE frame of the transmission timing determining unit slope value S6, the finger determining unit 14 receives the notification, and the power is saved, and the transmission timing is followed by the transmission timing. I: The transmission block is saved. Electrochemical (step magic). During the delivery period, judge In the current frequency band update period (step S8), the user 14 has to transmit the data (user data) to the next (step S8 No), and returns to step S1. 322663 201145859 In the data transmission period of the current band update period, when there is a transmission of the downstream data (user data) (step S8 Yes) 'determine whether it has become the transmission start time of the data transmission period (the transmission time of the downlink data transmission) (Step S9) 'When the start transmission time of the downlink data is not reached (step No.), step S9 is repeated. When the transmission time of the downlink data is reached (step (4), the transmission block is activated' and The transfer timing determination unit 14 instructs the read control unit 13 to read the data based on the start transmission time and the amount of data of the downlink data, and the read control is performed. The unit 13 reads the output of the data element from the buffer 1 () to the frame multiplexer 15 in accordance with the instruction (step S11). The frame multiplexer 15 stores the user frame of the data received by the read control unit 13. Give it 'and The transmitter 2 transmits the reward 2 (small step S12). Further, when there is a control frame outputted from the PON control unit 19, the frame multiplexer 15 performs the control frame and the user frame. The transmission timing decision unit transmits the time and the amount of data according to the start of the transmitted data, and Lin continues to schedule the transmission of the downlink data in the (four) silk shirt (step S13), when there is a predetermined transmission ( Step S13 Yes), returning to step S11. 褚 褚 褚 擅 擅 , , , 擅 擅 ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( 。 。 。 。 。 。 。 。 。 。 。 。 。 Next, the detailed operation of 0NU2 will be explained. In 〇NU2, the reception timing instruction unit 29 (4) determines whether or not the time is transmitted by the GATE frame from the start of the period information of the period LT1, and whether or not the reception of the GATE message 322663 201145859 frame is obtained by the horse. In step S21), when the operation determines the reception time (step S2i Yes), the reception block (the transmission reception unit mx is activated in order to receive the alarm box (step S22). (Step S21 No), step S21 is repeated. After step S22, the reception timing instruction unit 29 receives (4) from (4), and frames (step S23), and saves the reception block (step S2). Then, after being stored in the reception During the transmission of the GATE frame (user data), the judgment is (4) indicates that the next transmission (four) transmission of the # message (continuous transmission time is not the information) (step S25) 'no indication that there is transmission of the downlink data In the case of §fl (step S25 No), the process returns to step S21. When there is information indicating that the transmission of the downlink data is transmitted in the GATE frame (step S25 Yes), the reception timing instruction unit 29 transmits the information during the data transmission according to the GATE frame. The beginning When the transmission time is determined as the reception time of the obtained lower frame (step S26), and the transmission start time of the data transmission period information is not reached (step S26 No), step S26 is repeated. The transmission of the information during the data transmission period is started. At the time (YES in step S26), the reception timing instruction unit 29 activates the reception block (step 527). Next, the message 2 receives the user frame (down data) from the 0LT1 (step 528), and ends at the reception. After that (after a continuous transmission time), the receiving block is saved (step S29) 'back to step S21. Further, the activation of the receiving block in steps S22 and S27 is from the instruction to send the activation to In the case where the preparation time is required to be received, the instruction to transmit the activation is performed before the scheduled reception time. Fig. 5 is a diagram showing an example of the power saving control in the present embodiment. In the example of the fifth 322663 18 201145859 It is assumed that the NU#1 to #3 having the same configuration as 〇卯2 is connected to the OLThOLT1 and transmitted from the host device 4 to the data transmitted to the circle #1 to (10) U#3. As described above, 〇Ln According to the amount of the downlink buffer, the start transmission time and the continuous transmission time of the user frame storing the downloaded data are determined, and the GATE frame storing the determined information is transmitted to 0NU#1 to 0NU#3. In addition, at this time, the GATE frame will start transmitting the next GATE frame and the GATE length, and store and transmit the information as the action decision period. Then, 〇LT 1 will be transmitted to the next cycle action decision. The GATE frame 71 of NU#1, the GATE frame 72 to be transmitted to 〇#2 is transmitted to 〇NU#... to be transmitted. The figure b represents the content of the frame 71 to be transmitted to 〇NU#1 = Fig. 7, and the figure 7 shows the example of the valley to be transmitted to the 〇NU#2iGATE frame 72. As shown in FIG. 6, it is assumed that in the gate frame 71 transmitted to (10) U#1, as the data transmission period information, the start time #1' is stored at the start transmission time and the duration is saved when the continuous transmission time is stored. . Further, in the := TE frame 71, as the operation determination period information, at the beginning, as the resource I is transmitted to the message frame 72, the duration #1 is stored between the two Es. Further, in the ATE frame 72, _ 日柳3 is stored as the operation request time, and the transmission degree is started. Regarding the data transmission period, the information about the long storage box is stored, and the bAiE frame 71 in the update period becomes the same information as in GATE 322663 19 201145859. In contrast, the information about the action determination period is different for each ONU, and thus the GATE frame 71 and the GATE frame 72 become different information. Then, in 0NU #1 to 0NU#3, as described above, when there is no reception of the GATE frame and no reception of the frame is received, the receiving block is set to the power saving state. Then, the receiving block is activated before the receiving time of the GATE frame or the receiving time of the lower frame is earlier than the amount of overhead 61 required for the preparation period for starting the receiving block. Chemical. Further, at the end of the reception time (the end reception time is determined based on the start transmission time and the continuous transmission time), the reception block is shifted to the power saving state. At this time, after the instruction to save power is sent, it is set to a period in which it takes time 62 until it is actually in the power saving state. In Fig. 5, from 0NU #1 to 〇NU#3, the reception block is activated before the start time #1 earlier than the start time #1 shown in Fig. 6, and the start time #1 is obtained. After the duration #1, power saving is performed. Then, in the ONU #1, the reception block is activated before the consumption time 61 of the preparation period earlier than the start time shown in FIG. 6, and the duration #2 is passed from the start time #2. After the power saving. Furthermore, in the middle of the preparatory period earlier than the start time #3 shown in Fig. 7, the amount of the "fourth block" is activated, and the power saving is performed from the start _#3 after the duration #3. . In the example of Fig. 5, it is shown that the GATE frame is transmitted in the respective band update period 〇lti, and the data transmitted from 〇NU#1 to 〇_#3 is not transmitted, and there is no data transmitted from GLT1, etc. The next action determination time 322663 20 201145859 can be set to a time after the one band update period or longer. Fig. 8 is a view showing an example of power saving (4) when the next operation determination time is set to be equal to or longer than the 丨 band update period. In the eighth diagram, as in the case of Fig. 5, the GATE frame 7172 shown in the fourth and seventh figures is transmitted separately, and in the example of Fig. 8, the start time #2 and The start time #3 is set to be the time after the transmission of the GATE frame Ή, and the time of 72 is equal to or longer than the one band update period. Therefore, as shown in the & figure, the power saving state can be set to last for a long time, and in addition, the number of times of consumption 61' 62 can be reduced. The band allocation for this GATE frame can be individually performed according to the individual data reception status of each of 0NU#1 to 〇NU#3. That is, the frequency band 〇 of a part of 〇_ may be allocated in the next band update period, and the band update period after the next time may be allocated to different or all of the ONU bands. Thus, in the present embodiment, 0LT1 determines the start transmission time and the continuous transmission time of the downlink user frame, and the start transmission time and the continuous transmission time of the next GATE frame, and notifies the allocation of the transmission band for the ONU2. The GATE frame stores and transmits the determined start transmission time and continuous transmission time. The downlink user frame and the Gate Temple [white is from the 0LT1 downlink communication, so the above two types of transmission time and continuous transmission time can be regarded as the downlink communication time. In the 0NU2, 8 is separately performing the power saving of the uploading and transmitting section and the power saving of the downlinking receiving section, and the time zone other than the downlink communication time is set according to the GATE frame, and the downlink transmitting and blowing section is set to the power saving state. . Therefore, it is possible to efficiently perform power saving while continuing normal communication. In addition, since there is no need to transmit the special message 21 322663 201145859, it is possible to have a transfer = bring power saving. When the components are formed, the electrification and activation of the time when the activation is very large; and the relay of the whole signal is transmitted, so that the province can save power. In this case, the number of people decreases and the sum is reduced, so that it is possible to increase the transmission under the 0LT1 reception = 〇 NU2, when the transmission unit is in the power-saving state, when it is restarted, it is stored in the buffer 10 and is transmitted in the buffer. The effect. There is no frame loss in the owing. In addition, in the case of the conventional uploading communication status, the 0NU system is transmitted to the 根据 according to the requirements of the license from 0LT. LT, while receiving the U sleep mode that transitions to sleep mode. Therefore, it becomes a time to spend _, (4) at the end of the “before the actual (4) screaming style, it is necessary to spend too much power consumption for that period of time.

J °""2 GATE state, therefore ratio: to: send: and two consecutive transmission time _ for power saving, in order to save power. In the conventional PGN S system, it is transmitted to the sleep mode: 甬? When the generation is 0, the data cannot be transmitted immediately, and an unnecessary delay may occur. In contrast, in this embodiment, the downlink, and

1. The uploading communication system independently saves power. Therefore, in the state where the uploading and transmitting are transmitted to save power, the transmission can be transmitted from the 〇LT1 to the 〇2 and the communication can be delayed to reduce the communication delay. In addition, in the conventional system, the 0LT does not determine in advance the time zone for transmitting the communication hub and is brought in at any time during the data transmission period == 22 322663 201145859, and in the present embodiment, 'because of the prior decision transmission Since the transmission time zone of the lower frame is used, the downlink transmission section is activated by the transmission time zone, and the downlink transmission section can be saved during the data transmission period other than the transmission time zone. Therefore, compared with the conventional one, the 0LT1 can be saved. Further, in the above description, although the continuous transmission time is notified by the amount of data, it is also possible to use other information (time and number of clocks, etc.) to notify without using the amount of data. Further, in the third picture or the like, the downlink communication information is added after the uploading of the information, and the transmission information may be transmitted in addition to the uploading and transmitting information. (Second Embodiment) Fig. 9 is a view showing a configuration example of a second embodiment of the PON system of the present invention. The P(10) system of the present embodiment is the same as the Ρ0Ν system of the first embodiment except that OLT1 of the Ν0Ν system of the first embodiment is replaced with 〇LTla. The constituent elements having the same functions as those of the first embodiment are denoted by the same reference numerals as in the first embodiment, and the description thereof will be omitted. OLTla replaces the buffer 1〇 of the 0LT1 of the first embodiment, the write control unit 11, the buffer management unit 12, the read control unit 13, and the transfer timing decision unit 14 with the buffer 10a and the write control unit, respectively. Other than the iia, the buffer management unit 12a, the read control unit 13a, and the transfer timing determining unit 14a, the other is the same as the 0LT1 of the embodiment. In the present embodiment, it is assumed that the buffer 1 〇a is divided into areas for storing data for each 〇_, and the write control unit 〇a receives the data from the upper device 4 and stores it in the buffer area. The corresponding 下a corresponds to the area of the 0NU of the data receiving end. That is, the write control unit 11a has a function as a receiving end sorting means for transmitting the data of the _ classification of each of the 322663 23 201145859 ends. In addition, the buffer zone la has an area for broadcast transmission in addition to the area of each 〇NU, and the write control unit Ua transmits the data transmitted by the broadcast transmission to the area 4 outside the area. The buffer management unit 12a manages the buffer storage amount for each area, and the read control unit 13a reads the data from the buffer area for each area. Then, the transmission timing determining unit 14a of OLTla transmits (4) (start transmission time and continuous transmission time) of the transmission frame to each of the retransmission frames, and notifies the determined _ to the corresponding _. In the first embodiment, the transmission period is transmitted to the entire _ in the 1-band update period, and is notified to the whole. In the present embodiment, the various 0NU's are transmitted to each. The time of the sub-frame is given next, and the action of the fourth embodiment is explained. An example of the operation of the band update period of the first () = 1). As shown in the figure, in the present embodiment, the data transmission period in the band update period is divided into a wide == transmission period and other periods (by unicast transmission, each _), other It is the same as that of the first embodiment. Ground, = 2 weeks: In the second r, the first real one is transmitted. In addition, as the result of the band allocation result, the amount of the frame is deleted, and the deletion of the bank will be in the present embodiment. Section 1, on the transmission of multicast transmissions and multicast transmissions as shown in the broadcast transmission frame and multicast transmissions 322663 24 201145859 During the period of the delivery. However, the subsequent transmission to the deleted user frames by unicast is performed during the data transmission period other than the transmission period of the broadcast transmission/multipoint transmission. Fig. 11 is a view showing an example of the configuration of a GATE frame of this embodiment. As shown in Fig. 11, the hidden frame of the present embodiment is configured as follows: (1) The information frame of the broadcast frame/multipoint transmission is added to the hidden frame of the embodiment. The broadcast transmission/multicast transmission period information is composed of the start transmission time and the continuous transmission time of the broadcast transmission/multicast transmission period shown in FIG. In the present embodiment, the data transfer information stores different information for each ONU. In the 0NU2, according to the GATE frame, the downlink receiving unit is activated in the time zone corresponding to the information during the transmission of the broadcast transmission/multicast and the information during the data transmission (transmitted to the farm itself). The other parts of the time zone will be transmitted to the receiving section for power saving. Fig. 12 is a flow chart showing an example of the power saving control operation of the present embodiment. The action of 0LTla will be described based on Fig. 12. The step is the same as step 81 of the first embodiment. When the operation determination time is reached (step S1a), the transmission timing determination unit 14a acquires the buffer storage amount for each _ from the buffer management unit (step S3a), and presses each of the ONUs according to each buffer storage amount. The start transfer time and the data transfer amount (continuous transfer time) are determined (step S3a). In addition, it is assumed here that the transmission period of the broadcast transmission/multicast is determined in advance from the data transmission period to the predetermined (four), and * the transmission period of the broadcast transmission/multicast transmission according to the data amount is performed. However, it is not limited to this, and it is also possible to determine the transmission period of the broadcast transmission/multicast transmission according to the storage amount of the data transmitted by the broadcast transmission/multicast transmission according to 322663 25 201145859. After step S4, step S9a is performed, and step sila is the same as that of the first embodiment instead of step S9, and S11. In step S9a, it is judged by each ONU whether or not the transmission time is the start of the data transfer period, and in step S11a, the data is read out from the corresponding areas of the buffers 1 & Further, the operation of the ONU 2 is the same as that of the first embodiment. However, the reception timing control unit 29 refers to the transmission period information of the broadcast transmission/multicast of the GATE frame, and activates the downlink transmission unit during the transmission of the broadcast transmission/multicast. The operation of this embodiment other than the above is the same as that of the first embodiment. Fig. 13 is a view showing an example of power saving control in the present embodiment. In the example of Fig. 13, it is assumed that the same configuration as 〇NU2, that is, #1 to #3 are connected to OLTla. The OLTla receives the data to be transmitted from the host device 4 to be transmitted to the 〇NU#i to 〇NU#3. Next, 〇LTla 〇 〇 NU#1 to 〇NU#3 transmits the message frame 'and during the next-cycle action decision period' is to be transmitted to the GATE frame 73 of the coffee, and the GATE frame 74 to be passed to (10)u#2 is to be Pass to... Send it. '° · Figure 14 is not to be passed to the content example of GATE frame 73 of #1, and the 15th figure is not to be transmitted to the inner case of 〇NU#2iGATE frame 74. As shown in Fig. 14, it is assumed that the message frame 73' to be transmitted to (10) (4) is used as the action determination period information, and the transmission start time is started at time #4, and as the data transmission period information, at the start of transmission ^ 322663 26 201145859 Stores the start time #2 and stores the duration #2 in the continuous transmission time, and as the transmission period information of the broadcast transmission/multicast, the storage start time #1 is stored at the start transmission time, and the storage is continued during the continuous transmission time. Time #1. Further, as shown in FIG. 15, the GATE frame 74 is used as the operation determination period information, and the start time #5 is stored at the start transmission time, and the start time #3 is stored as the data transmission period information at the start transmission time, and The duration #3 is stored for the continuous transmission time, and as the transmission period information of the broadcast transmission/multicast, the start time #1 is stored at the start transmission time, and the duration #1 is stored at the continuous transmission time. As shown in Fig. 13, in the present embodiment, 0NM1 to 0NU#3 may be transmitted only during the data transmission period (except during the transmission of the broadcast transmission/multicast transmission) only during the transmission of the frame below the apparatus itself. The downlink receiving unit is activated, and in the other period, the downlink receiving unit performs power saving. In addition, in the example of FIG. 13, the GATE frame is transmitted in the entire ONU for each frequency band update period, and for the 0NU without receiving the transmission data, the transmission of the GATE frame may be performed after the 1-band update period or later. Timing. Fig. 16 is a diagram showing an example of power saving control in the present embodiment in the case where the time after the one-band update period or longer is set to the transmission timing of the GATE frame by the ONU2. The example shown in Fig. 16 is an example after the start time #5 (the start transmission time of the operation decision period information) notified by the GATE frame 74 is the period shown in Fig. 16. As shown in Fig. 16, in 0NU#2, during the reception period of the GATE frame, the downstream reception unit can be continuously set to the power-saving state, so that the efficiency of power saving can be further improved. 27 322663 201145859 As described above, in the present embodiment, the transmission timing determining unit 14a of the OLT is configured to determine the transmission time zone 4 of the lower frame based on the respective _lower buffer amounts, and the transmission time bands of the respective frames are set. The notification office corresponds to GNU. So 'can be obtained with the first! The same effect is achieved in the embodiment. As compared with the i-th embodiment, it is ensured that the power saving state is lengthened. (Embodiment 3) Fig. 17 is a view showing a configuration example of a third embodiment of the p 〇 N system of the present invention. In the P〇N system of the present embodiment, the 0LT1 of the p〇N system of the i-th embodiment is replaced with the OLTlb, and the other system is the same as the Ν0Ν system of the i-th embodiment. The constituent elements having the same functions as those of the first embodiment are denoted by the same reference numerals as in the first embodiment, and the description thereof will be omitted. OLTlb replaces the buffer 1〇 of the 0LT1 of the first embodiment, the write control unit 11, the buffer management unit 12, the read control unit 13, and the transfer timing determination unit 14 with the buffer 1b and the write control. The other parts are the same as the 0LT1 of the first embodiment except for the part lib, the buffer management unit 12b, the read control unit 13b, and the transfer timing determining unit 14b. In the first embodiment, OLT1 determines the transmission time zone of the lower frame based on the buffer amount of each ONU. In the present embodiment, the transmission time zone is determined based on the delay level of the data. In the present embodiment, the write control unit lib classifies the downlink data received from the upper device 4 into low-latency data belonging to the hierarchy requiring low delay according to the delay hierarchy; and the delay hierarchy which does not require low delay. Non-low latency data for the information. That is, the write control unit 11b has the functions of 28 322663 201145859, which is divided into: a function of classifying the downlink data by the ONU of each receiving end as a receiving end classification means; and classifying the downlink data by each delay level. The function of delay level classification means. The buffer l〇b is divided into regions of low delay and non-low delay, and is divided into regions of each 〇NU. Further, similarly to the second embodiment, an area for broadcasting data is also provided. Here, as shown in Fig. 17, the buffer 1 〇b is separated into 0NU#1 with low delay, 〇卯#2 with low delay..., 〇Νϋ#1 with non-low delay, 0NU#2 with non-low delay... , the area for broadcast transmission. In addition, here, it is assumed that the data transmitted to the broadcast transmission is non-low delay, and the area for broadcast transmission is set to one, and when there is a low delay level to be transmitted to the material for broadcast transmission, the broadcast may also be broadcast. The transmission is divided into two of a low delay level and a non-low delay level. In the present embodiment, for example, a Cos (Class 〇f Service) value of a VLAN (Virtual Local Area Network) and a TCP/IP (Transmission Control Protocol/Internet Protocol) are used. The connection number of the network protocol, etc., is identified by the delay level. The write control unit 11b receives the lower-delay data and the non-low-latency data from the upper device 4 according to the CoS value, the TCP/IP port number, and the like, and classifies them according to the omj of each receiving end. And storing the buffer area 1b in the buffer area 1b, and obtaining the downlink buffer amount for each area, and the read control unit 11b stores the data stored in the buffer area (10) for each area. read out. Fig. 18 is a flow chart showing an example of a power saving control operation of the P〇N system of the present embodiment 322663 29 201145859. According to Fig. 18, the action of 〇LTlb will be described. The step illusion is the same as the first embodiment ‘4. When the operation is determined (step & "o, the transfer timing determining unit 14b acquires the delay level and the buffer storage amount of each ONU from the buffer management unit 12b (step S2b). Then, according to the delay level and the buffer storage amount of each ONU Perform downlink bandwidth allocation (step illusion), and determine the start transmission time and data transmission amount (continuous transmission time) of the next frame according to each ONU (step. 'Specifically' regarding low-latency data, Similarly, in the second embodiment, the start transmission time and the data transmission amount of the lower frame are determined. For the non-low delay data, the data is transmitted and transmitted by the data of the multiple (four) update week == To determine the opening time of the transmission frame and the amount of data transmission. At this time, when both the phase-band update period _ ^ delay data and non-low delay data are transmitted to i _, the time zone is ===== The transmission is carried out. (4) The sequence "for example, the non-low-latency transmission is carried out. The amount of buffering in the band update period of the data is not two or two, and a GNU will be non-lower under the corresponding non-low-latency data. When the threshold value is 1 in the frequency band update period, if it is not stored in the buffer, the boundary value, the buffer amount under the & delay beacon material exceeds the predetermined amount. Low latency (4). Or, • Delay #料 cycle, determined by the number of bands 322663 30 201145859 update cycle, and the way to transmit non-low latency data for each ONU in each predetermined number of band update cycles' The transmission time and the data transmission amount are determined. After step S4, step S9 is performed instead of step S9, and step S11b is performed in the same manner as in the first embodiment. In step S9b, it is judged whether or not it is low according to each ONU. The transmission time of the data transmission period of the delay data and the low-delay data is transmitted, and in step sllb, 'the data is read from the corresponding low-latency data or the non-low-latency data area of the buffer i〇b according to each ONU. In addition, 0NU2 The operation is the same as that of the first embodiment. However, the reception timing control unit 29 refers to the transmission period of the broadcast transmission/multicast of the GATE frame as in the second embodiment. The information is transmitted, and the downlink transmission unit is also activated during the transmission of the broadcast transmission/multicast. The configuration of the GATE frame of the present embodiment is the same as the configuration of the GATE frame of the second embodiment. The operation of this embodiment is the same as that of the third embodiment. Fig. 19 is a diagram showing an example of power saving control according to the present embodiment. In the example of Fig. 19, 〇nu# having the same configuration as 〇NU2 is not used. 1 to connect to OLTlb. OLTlb is in the beginning of the frequency band update week #月, will be transmitted from the host device 4 to G, _#3 low-latency level of the downlink data, and the non-low-latency level transmitted to 0_2 The transmission (4), as well as the non-low-latency level, is transmitted to the broadcast transmission. _, (10) 1 2 = band transmission Wei Yan (four) shape transmission difficult to face 0 delete 3, and will be passed to 0_ the hidden frame 75, and to pass to 322663 31 201145859 〇NU#2 GATE frame 76, ... Transfer. Further, in this band update period 'OLT lb lb receives the data of the low delay level to be supplied from the upper device 4 to NU #2 and the data of the non-low delay level to be given to NU #2. Next, in the third band update period, the low-latency level and the non-low-latency level lower-level communication frame are transmitted to the ONU#2, and the GATE frame containing the GATE frame 77 to be transmitted to the 〇卿#2 is transmitted. - Fig. 20 shows the contents to be transmitted to the 〇NU#1 iGATE frame 75. Fig. 21 is a diagram showing the contents of the GATE frame 76 to be transmitted to 〇NU#2. Further, Fig. 22 shows an example of the contents of the GATE frame 77 to be transmitted to 〇NU#2. As shown in Fig. 20, it is assumed that the information frame 75 to be transmitted to the 〇NU#1 is used as the operation determination period information at the start transmission time storage start time #3; Start transmission time storage start time #2 'Storage duration time in continuous transmission time; transmission period during broadcast transmission/multicasting is 'starting transmission time=starting time' and storing duration in continuous transmission time# 1. In addition, «again. in the GATE frame 76 towel, as the action decision period information = start, the time of the storage phase; as the data transmission period information;; = start transmission time (because no coffee 2 time system storage 〇.付,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, In the gate frame 77, the 'set as shown in the supplementary picture is set to: the information to be transmitted to 〇_ as the action determination period, and the start is to transmit 322663 32 ^1145859 time storage start time #7, when the transmission time storage starts = 乍The data transmission period information is at the beginning #5; and as the broadcast transmission / the continuous transmission time storage duration, the door starts to transmit the time (because there is no wide transmission, the transmission period information is not referred to; the time is stored 〇. In the new cycle, from the beginning of the hall, not in the 0_ towel, in the second band more engraved #2 to the duration #2 = #1 to the duration Between #1, and from the beginning of #3, will be transferred And from the beginning _ to the duration, in addition, in ONU #i, to activate, and other to save power. The communication frame is connected, so from the third band update cycle, because there is no GATE frame The notified time (the duration of the second band update period #6 (the start transmission time of the information from the second determination period) to the GATE frame with the update period during the action determination period is notified by the other ::: Teleportation time) will be transmitted between the receiving unit and the start time #4, and the lower value and the time from the start time #4 to the continuous. In addition, the f / transmission receiving unit is activated, and the other is In the third frequency band update cycle, after the power-saving time 赖, in the third band update cycle, after the start time #7: "and from the start time #7 to the continuous time, the downlink receiving unit is activated, and the others are performed. As shown in Fig. 19, the 〇LTlb is to be transmitted to the band update period of _#2 = and the second band update period is received, and the second ____ is sent to the purely extended data. And 322663 33 201145859 in the fourth "updated" will be non-low-grade and low-latency levels In the present embodiment, the delay level is classified into two types, or the class is three or more. For example, the pepper and ra are classified according to the delay level into new ones for the B system. The cycle is performed and the transmission is performed for C. The transmission frequency is changed according to the delay level according to the 5th band update period. The second transmission: In this embodiment, each _ according to Γ' According to the different receiving end, the classification is based on the 延迟 _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ In the case of i == 枓 之 四 四 四 四 四 四 四 四 : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : The transmission timing determining unit 14b of h is based on the transmission time (four) of each fixed frame, and is transmitted for the allowable delay = standby and will be updated in a plurality of frequency bands =: non-low delay (four) (four) and one Fresh update cycle transmission. Therefore, the same effect as in the second embodiment can be obtained. 2. The period in which the power saving state is lengthened can be ensured. In the above embodiment, the user side device frame performs the frequency band request according to the buffer amount. However, according to the buffer amount, it is not necessary to obtain t 322663 34 201145859, and the present invention is not limited thereto. Therefore, as long as the user can request, the user side device can transmit any information to the office side device to subscribe to the frequency band. In the above embodiment, the time division multiplexing processing system has been described as 'however, as the frequency band allocation As a result, it is passed in advance = ......... |一々. ", Gong. 〒 曰 U, 咕 叩 叩 通知 通知 通知 通知 通知 通知 通知 通知 通知 通知 通知 通知 通知 通知 通知 通知 通知 通知 通知 通知 通知 通知 通知 通知 通知 通知 通知 通知 通知 通知 通知 通知 通知 通知The composition can also be used in the communication system of the time-sharing multi-worker Hungarian Jun. 'For example, the invention can also be buried for wavelength separation multi- ), point division multi-point communication such as code division multiplex, etc. The invention is not limited to optical communication, and can also be applied to a communication system having a system. At this time, the user side device is not light. The receiver and the 2 wireless band allocation result intermittently control the buccal state of the receiver receiving the electric signal, and can achieve more efficient power saving. To save power [industrial availability] As described above, Ρ0Ν system of the invention The user-side device, the communication method, and the communication method are useful for the P0N system that seeks to save power, and the P0N system that seeks to save power without compressing the frequency band. The application is simplified [Illustration] The first figure shows the first FIG. 2 is a diagram showing a configuration of a frequency band update of the first embodiment. FIG. 4 is a view showing an example of the configuration of a GATE frame according to the first embodiment. A flow chart showing an example of the power saving control operation of the Ν0Ν system of the first embodiment. 35 322663 201145859 Fig. 5 is a view showing an example of power saving control in the first embodiment. Fig. 6 is a view showing the first embodiment. Fig. 7 is a view showing an example of the content of the GATE frame of the first embodiment. Fig. 8 is a view showing a case where the next operation determination time is equal to or longer than the one band update period. Fig. 9 is a view showing an example of the structure of the Ν0Ν system of the second embodiment. Fig. 10 is a view showing an example of the operation of the band update period of the second embodiment. 2 implementation of the GATE frame Fig. 12 is a flow chart showing an example of the power saving control operation of the Ν0Ν system of the second embodiment. Fig. 13 is a view showing an example of the power saving control of the second embodiment. Fig. 14 is a view showing an example of the power saving control. FIG. 15 is a view showing an example of the content of the GATE frame in the second embodiment. FIG. 16 is a view showing the content of the GATE frame in the second embodiment. Fig. 17 is a view showing a configuration example of a power saving control system according to a second embodiment of the present invention. Fig. 18 is a view showing a configuration of a system of the third embodiment. Flow chart of an example of power saving control operation. Fig. 19 is a view showing an example of power saving control in the third embodiment. Fig. 20 is a view showing an example of the contents of the GATE frame of the third embodiment. Fig. 21 is a view showing an example of the contents of the GATE frame of the third embodiment. Fig. 22 is a view showing an example of the contents of the GATE frame of the third embodiment. 36 322663 201145859 [Key component symbol description]

1, la, lb OLT 2 3 4 5 10, 10a, 10b, 20 11 , 11a , lib , 21 12 , 12a , 12b , 22 13 , 13a , 13b , 23 14 , 14a , 14b 15 , 24 16 , 25 17 , 27 18, 28 19, 26 29 ONU Disconnector Host Device Lower Device Buffer Write Control Unit Buffer Management Unit Read Control Unit Transmission Timing Determination Unit Frame Multiplexer Optical Transmitter Optical Receiver Frame Separation Unit P0N Separation section reception timing indication section 37 322663

Claims (1)

201145859 VII. Patent application scope: 1. A PON system, which has: a plurality of user-side devices; and a side-side device, which allocates a frequency band for uploading communication to each user-side device, and performs multiplex communication, and the characteristics are as follows: The office-side device includes control means for defining a part of the band update period after the next time as the data transmission period of the downlink data, and notifying the user-side device as the bandwidth allocation result before the transmission of the downlink data. The user side device includes: receiving means for receiving the downlink data transmitted from the office side device; and state control means for receiving the receiving according to the data transmission period included in the bandwidth allocation result The means is transferred to a power saving state or a normal state. 2. The system according to claim 1, wherein the control means allocates the transmission period of the downlink data and the transmission period of the bandwidth allocation result in the frequency band update period, and the foregoing state The control means shifts the receiving means to the power saving state during the transmission period of the transmission of the band separation result during the transmission to the other user side device. 3. The system of claim 1, wherein the control means assigns the data transfer period as a common transfer period to a plurality of the user side devices, and during the transfer period 322663 In 201145859, the assignment result of each user side device is not specified. The term or the system described in the second aspect, wherein the control means assigns a different time period to the plurality of user side devices and transmits the band allocation result. 5. If the application system described in item i or item 2 of the scope of patents, the description of the control means is for the transmission of the (four) frame, with the result of the allocation, and the information for the period of unicast communication. And the period information for multicast communication is specified. 6.2 Applying for the Ρ0Ν system described in item 1 or 2 of the patent scope, the basin control means is not transmitted to the special downstream data in the next-sub-band update period, as the specific user During the aforementioned data transfer of the side device, the period of the next-second band update cycle is specified. The frequency of the wheat 7. The ρ〇Ν system described in the third paragraph of the patent application, wherein the manufacturing method is not transmitted to the specific downstream data of the specific device during the next-sub-band update period. During the above data transfer, the period of the next two side device periods is specified. - Band update after the person. Week 8. The system-based means described in item 4 of the patent application scope is when the next band update period is not transmitted, and the medium === downlink data, as the specific household During the transmission, the frequency band update after the next next time is specified. 322663 2 201145859 9. The p〇N system according to claim 5, wherein the foregoing control means is not transmitted to a specific user side device in the next frequency band update period. In the case of the above-mentioned downlink data, the period of the band update period after the next time is specified as the data transmission period for the specific user side device. 10. The P0N system of claim 1, wherein the side device is provided with a buffer for storing data transmitted from the device itself to the user side device, and the device of the device is controlled. The means includes a transmission timing determining means for determining a data transmission period of a transmission period of the downlink data, and a transmission timing determining means for determining a data transmission period of the transmission period of the downlink data, wherein the means for controlling the data is based on the foregoing data The transmission period is controlled during transmission to control the transmission of the aforementioned band allocation result. The system of claim 1, wherein the user-side device is provided with an uploading and transmitting means and a user-side control device, wherein the uploading and transmitting means performs a transfer processing of the uploading communication; The user side control means shifts the uploading means to a power saving state or a normal state during a period different from the receiving means based on the bandwidth allocation result of the uploading communication. 12. The system of claim 10, wherein the receiving end classification means 'stores the downlink data in the buffer according to the user side device at each receiving end, and the transmission timing is determined. The method determines the data transmission period according to the storage amount of the downlink data stored in the buffer zone of each of the user-side devices, and the user side splitting is performed according to each of the 322663 3 201145859. 13', for example, the remuneration system described in item 12 of the garden, wherein the frequency band update is not performed for each of the user-side devices. 14_, as in the PGN system described in the scope of claim 1G, wherein the late stage is 5?_ segment, which is based on the requirements of the delay, and the number is ▲ ^ to classify, and the classified &==data is stored in the aforementioned buffer buffer according to the level of each delay delay, and the transmission timing (4) is for the aforementioned rumor data of the level that does not require low delay, so as to in! More than one band update The data received by the W block received by the second block is measured in a frequency band update period by a 15.:1 method to determine the aforementioned data transfer period. The system described in item 12 or item 13 of the patent scope has a delay level classification means, which is based on the delay level and the aforementioned users of the respective receiving ends, and the former iife field Θ &gt The tool is to be processed, and the data is stored in the buffer zone according to each delay level and each receiving end. The sounding department refers to the transmission timing determining means according to each of the aforementioned user side i. The storage amount of the aforementioned downlink data is, in addition,: #'[: the household side device determines the data transmission period, and the above-mentioned downlink data of the delay level which is required to be low-latency is updated to the upper frequency band. The user-side device is a user-side device of the PON system, and the user-side device is provided by the user. And the device side device, according to each predetermined frequency band update period, for the user side device to belong to the user side device to the office side device The frequency band of the upload communication of the communication in the direction of the body is allocated, and the allocated frequency band is notified to the user side device as the band allocation result, and the user side device is provided with: receiving means for the device from the side device The received downlink data is subjected to predetermined reception processing; and the reception timing indication means receives the frequency band allocation result of the transmission period in which the downlink data is added from the office side device, and is based on the foregoing bandwidth allocation result included in the foregoing During the data transmission, the aforementioned downlink receiving means is transferred to the power saving state or the normal state. 17. A side device, which is a side device of a system, the system includes: a user side device; and a side device, which is updated for each predetermined frequency band, and the user side device belongs to the user from the user The side device distributes the frequency band of the communication for the communication of the communication in the direction of the office side device itself, and notifies the allocated frequency band as the band allocation result to the user side device, and the device includes: a buffer area For transmitting the data from the device itself to the user-side device for storage; the transmission timing determining means determines the data transmission period of the transmission period belonging to the downlink data according to each of the foregoing frequency band update periods; 5 322663 201145859 The PON control means adds the foregoing data transmission period to the bandwidth allocation result, and transmits the added frequency band allocation result to the user side apparatus. 18. A point-to-multipoint communication method comprising the steps of: transmitting a band allocation result during a period in which a downlink data transmission period is transmitted to a user side device; a step of transmitting the downlink data by the office device in the foregoing frequency band update period after the transmission of the bandwidth allocation result; and receiving light receiving the downlink data according to the bandwidth allocation result received by the user equipment And a step of setting a power saving state during one of the band update periods; and the optical receiver according to the bandwidth allocation result received by the user side device in another period of the band update period Set to the receiving status step. 6 322663