WO2005008965A1 - 通信システム - Google Patents
通信システム Download PDFInfo
- Publication number
- WO2005008965A1 WO2005008965A1 PCT/JP2003/009219 JP0309219W WO2005008965A1 WO 2005008965 A1 WO2005008965 A1 WO 2005008965A1 JP 0309219 W JP0309219 W JP 0309219W WO 2005008965 A1 WO2005008965 A1 WO 2005008965A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- subscriber
- packet
- station
- filter
- bucket
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/16—Time-division multiplex systems in which the time allocation to individual channels within a transmission cycle is variable, e.g. to accommodate varying complexity of signals, to vary number of channels transmitted
- H04J3/1694—Allocation of channels in TDM/TDMA networks, e.g. distributed multiplexers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/66—Arrangements for connecting between networks having differing types of switching systems, e.g. gateways
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/10—Flow control; Congestion control
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/10—Flow control; Congestion control
- H04L47/32—Flow control; Congestion control by discarding or delaying data units, e.g. packets or frames
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/02—Network architectures or network communication protocols for network security for separating internal from external traffic, e.g. firewalls
- H04L63/0227—Filtering policies
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
- H04Q11/0062—Network aspects
- H04Q11/0067—Provisions for optical access or distribution networks, e.g. Gigabit Ethernet Passive Optical Network (GE-PON), ATM-based Passive Optical Network (A-PON), PON-Ring
Definitions
- the present invention relates to a communication system, and more particularly to a communication system for performing communication between a station and a calorie.
- Such an optical access system is an indispensable technology for providing high-capacity communication services such as video-on-demand, CATV, and high-speed computer communication at a low cost.
- Development is progressing as a network.
- FIG. 9 is a diagram showing an outline of an optical access system.
- the subscriber's homes 110-1 to L10-n are provided with subscriber terminating devices 111 to perform optical burst transmission.
- a station device 121 is arranged in 120.
- a terminal 4 such as a personal computer is connected to the subscriber terminating devices 111-1 to 11-n, and an exchange 122 for switching between the network and the office equipment 121 is connected to the office equipment 121. Then, the subscriber terminating devices 111-1 to 111-n and the central office device 121 are connected to the star power bra 130.
- Downlink information from the station 120 to the subscriber's homes 110-1 to 110-n is transmitted from one optical fiber via the star power bra 130 through the optical fiber branched in a tree shape.
- the upstream information from the subscriber's home 110-l to 110_n to the station 120 is transmitted from the optical fiber branched in a tree shape through the optical fiber bundled into one via the star power bra 130.
- the optical access system Reference numeral 100 denotes a star power bra 130 configured as an optical branching type access network that connects the station 120 and a plurality of subscriber terminating units 111-1-1111-n with 1: n.
- Such optical access systems include BP ON (Broadband PON), which transmits and receives fixed-length cells between stations and subscribers based on ATM (Asynchronous Transfer Mode) technology, and is standardized by ITU-T. ing.
- BP ON Broadband PON
- ATM Asynchronous Transfer Mode
- EPON Error PON
- Ethernet registered trademark
- EPON has the advantage that the control is not as complicated as BP ON, the subscriber termination equipment can be made smaller, and the cost can be reduced.
- BP ON is more effective as a dedicated line service for enterprises, but it is expected that FTTH for general households will be mainly connected to the best-effort Internet, so the mechanism is simple and equipment cost is low.
- EPON which can reduce the noise, is expected to spread as a system that becomes the mainstream of optical access networks.
- Patent Document 1
- JP-A-10-112718 (paragraph numbers [0016] to [0021], FIG. 1)
- the present invention has been made in view of such a point, and an object of the present invention is to provide a communication system in which unnecessary buckets are not delivered to a user terminal and transmission efficiency is improved.
- a communication system 1 for performing communication between a station and a subscriber as shown in FIG. 1 transmission and reception of packets between the station and the subscriber, or filter setting data Station device 10 including a station-side communication interface section 11 for transmitting data and receiving filter state data, and transmitting / receiving buckets between the station and the subscriber, or file setting data.
- Subscriber-side communication interface unit 21 for receiving evenings and transmitting filter status data
- terminal address management unit 22 for acquiring and managing terminal addresses from connected terminals, distribution information, registration information, and filters
- Have A communication system 1 is provided.
- the station side communication interface section 11 transmits and receives packets between the station and the subscriber, or transmits filter setting data and receives filter state data.
- the subscriber-side communication interface 21 transmits and receives packets between the station and the subscriber, or receives filter setting data and transmits filter state data.
- the terminal address management unit 22 acquires and manages a terminal address from a connected terminal.
- the packet filter unit 23 performs a filtering process on the packet transmitted from the station device 10 to the terminal based on at least one of the distribution information, the registration information, and the filter setting data.
- the communication system includes Based on the setting data, a search is performed to determine whether or not the destination address included in the packet transmitted from the central office apparatus matches the terminal address managed by the terminal address management unit.
- the packet is transmitted to the corresponding terminal, and if there is no matching address, the packet is discarded.
- unnecessary packets are not delivered to the terminal, and the occupation of the transmission band by the unnecessary packets can be prevented, so that the transmission efficiency can be improved.
- FIG. 1 is a principle diagram of the communication system of the present invention.
- FIG. 2 is a diagram showing a configuration of the subscriber terminal device.
- FIG. 3 is a diagram showing a configuration of the subscriber terminal device.
- FIG. 4 is a diagram illustrating a configuration of a communication system.
- FIG. 5 is a diagram showing a configuration of a communication system.
- FIG. 6 is a diagram showing a configuration of a communication system.
- FIG. 7 is a diagram showing a configuration of a communication system.
- FIG. 8 is a diagram showing a caro entry information table.
- FIG. 9 is a diagram showing an outline of the optical access system. BEST MODE FOR CARRYING OUT THE INVENTION
- FIG. 1 is a principle diagram of the communication system of the present invention.
- the communication system 1 of the present invention is a system for performing communication between a station and a subscriber, and will be described below with reference to an EPON optical access system.
- the communication system 1 includes a plurality of terminals 4-1-1 to 4-11-n and 4-4 respectively connected to the subscriber terminating devices 20-1 to 20-n (collectively, the subscriber terminating devices 20).
- n—1 to 4-n-n (terminal 4 in the collective term) is connected, and the subscriber terminator 20— :!
- the station device 10 includes a station-side communication interface (I ZF) unit 11.
- Station side communication I ZF unit 11 sends and receives packets between the station and the subscriber. In addition, it transmits the filter setting data to the subscriber terminal unit 20 and receives the filter status data from the subscriber terminal unit 20.
- the filter setting data is transmission data for remotely setting the packet filtering function in the subscriber terminal device 20 from the central office device 10, and the filter status data is the packet filtering function of the subscriber terminal device 20. This is the reception data that indicates the setting status of (see Figures 4 and 5).
- the subscriber terminating device 20 comprises a subscriber-side communication IZF unit 21, a terminal address management unit 22, a bucket filter unit 23, and a terminal IZF unit 24.
- the subscriber communication I / F 21 transmits and receives packets between the station and the subscriber. It also receives the filter setting data and transmits the filter status data.
- the terminal address management unit 22 acquires and manages a terminal address from the terminal 4 connected to the own device via the terminal IZF unit 24.
- the packet filter unit 23 performs a filtering process on the packet transmitted from the station device 10 to the terminal 4 based on at least one of the distribution information, the registration information, and the filter setting data.
- the packet filter unit 23 determines whether or not the destination address included in the packet transmitted from the station device 10 matches the terminal address managed by the terminal address management unit 22. Search for. If there is a matching address, the packet is transmitted to the corresponding terminal 4, and if there is no matching address, filtering processing is performed to discard (non-transmit) the packet (the address was used to identify the terminal. Any information can be used as long as the terminal can be identified).
- the filtering operation described above is a filtering process when the distribution information is a distribution pattern of a unicast or when there is no instruction such as blocking of a filter as filter setting data. Details will be described later.
- FIG. 2 is a diagram showing the configuration of the subscriber terminating equipment.
- the subscriber terminating device 20a is connected to the terminals 4-1 to 4-1n, and the subscriber side communication IZF unit 21, terminal address management unit 22, bucket fill unit 23, 3 ⁇ 43 ⁇ 4 * I / F3 ⁇ 4 24, composed of packet buffers 25-1 and 25-2.
- the subscriber communication I / F 21 includes an optical-Z electrical converter 21 a and a PON termination 21 b
- the packet filter 23 includes a filter setting unit 23 a and a downlink filter 2. 3b, including uplink fill 2c.
- the optical / electrical converter 2la receives the PON layer optical signal and converts it into an electrical signal.
- the PON terminator 21b terminates the PON layer to extract a packet, converts the packet into a format compatible with the subscriber terminal device, and then writes the bucket into the packet buffer 25-1. Also, ? The 0 terminating unit 2 113 extracts distribution information described later from the packet and transmits it to the filter setting unit 23 a.
- the terminal address management unit 22 monitors the transmission buckets from the connected terminals 4_1 to 4-n via the terminal I / F unit 24, acquires the terminal address value from the bucket, and stores the value in the table. register.
- Terminal address management unit 22 connects to subscriber terminating device 20a to communicate with the station. It knows in advance the address value of the terminal that is allowed to perform communication and permits registration to the table within this range.
- the filter setting unit 23a performs a filtering setting to the downlink filter 23b based on the distribution information from the PON termination unit 21b.
- the distribution information includes a distribution pattern of multi-Z broadcast and multicast.
- Multi-Z broadcast is to distribute the same packet to all of the terminals 4-1 to 4-n. Means to distribute the bucket to any one of the terminals 4-1 to 4-1n).
- the filter setting section 23a sends the destination address and the downlink address to the downlink filter 23b. Instructs filtering processing based on comparison with the terminal address.
- the downlink filter 23 b reads the packet from the packet buffer 25-1. Then, when the distribution pattern of the distribution information is the multi-Z broadcast, a filtering process for transmitting the received packet to the terminal side is performed. If the delivery pattern is a unicast, only packets whose destination address matches the terminal address are transmitted to the terminal side, and other buckets are discarded.
- the terminal I / F unit 24 transmits a packet that has passed through the downlink filter 23b to all of the terminals 4-l to 4_n. In the case of tuncast, the transmitted bucket is transmitted to the corresponding one terminal.
- multicast distributes the same bucket to all terminals 4-1 to 4-1n, and broadcast divides terminals 411 to 4_n into several broadband groups. Is defined, the packet is delivered to all terminals belonging to the corresponding broadband group.
- the operation of the downlink filter 23b is as follows. All multicast and broadcast packets are transmitted, and in the case of unicast, only the packet whose destination address matches the terminal address is transmitted. Discard the bucket. Also, for terminals 17 and 24, in the case of multicast, Transmit the bucket transmitted through 2 3 b to all the terminals 4 1 to 4-n. In the case of broadband broadcasting, it recognizes the broadband group to be transmitted and transmits the bucket to all terminals in the corresponding broadband group. In the case of multicast, the transmitted bucket is transmitted to the corresponding terminal.
- the transmission in the upstream direction from the subscriber to the station involves transmitting variable-length packets based on the timing specified by the station. What you do).
- the terminal 17 unit 24 transmits the packets to the uplink filter 23c.
- the uplink filter 23c transmits the packet if the source address of the packet is equal to the terminal address from the terminal address management unit 22 and writes the packet to the packet buffer 25-2. (If the source address and the terminal address are not the same, it is assumed that a terminal for which communication is not permitted is connected and communication is not possible.)
- the PON terminator 21b reads out the packet from the bucket buffer 25-2, converts it into a format on the station side, and outputs it.
- the optical / electrical converter 21a converts the received bucket into a PON layer optical signal and transmits the signal to the central office 10.
- the packet filtering section 23 filters unnecessary packets at the subscriber terminal device 20 installed in the preceding stage of the terminal 4. As a result, unnecessary packets are not delivered to the terminal 4 and the occupation of the transmission band of the network between the subscriber terminating device 20 and the terminal 4 by the unnecessary buckets can be prevented, thereby improving the transmission efficiency. Will be possible.
- the above-described filtering process is performed according to a distribution pattern such as multicast, broadcast, or multicast, highly flexible bucket distribution can be performed.
- FIG. 3 is a diagram showing a configuration of the subscriber terminal device.
- the configuration of the subscriber terminal device 2 Ob is the same as the device configuration shown in FIG. The different point is that the registration information is transmitted to the filter setting unit 23a, and the PON termination unit 21b and the registration information are transmitted.
- Terminator 2113 terminates the PON bucket. At this time, the PON terminator 21b determines whether the subscriber terminating device 2 Ob is registered at the station side.
- the 01 ⁇ terminal unit 2113 transmits to the filter setting unit 23a the registration information including the registered / unregistered content, which is the result of the determination.
- the filter setting unit 23a When recognizing from the registration information that the own device has not been registered, the filter setting unit 23a transmits an instruction to discard all received packets to the downlink filter 23b. Also, when recognizing that the own device is registered from the registration information, it instructs the downlink filter 23b to perform a filtering process based on a comparison between the destination address and the terminal address.
- the present invention it is possible to prevent unnecessary packets from being unnecessarily delivered to the terminal 4 by performing a filtering process of discarding a packet when it is not registered and transmitting a packet after registration.
- FIG. 4 shows the configuration of the station device 10c
- FIG. 5 shows the configuration of the subscriber terminal device 20c.
- the station device 10c includes a station-side communication IZF unit 11, a layer 2 switch 12, a packet buffer 13-1, and a 13-2.
- the station-side communication IZF 1511 includes a station-side filter information extraction / input section 11a, a PON termination section llb, and an optical / electrical conversion section 11c.
- the layer 2 switch 12 performs switching processing of an upstream packet to the network and a downstream packet from the network.
- the bucket buffer 13-1 stores packets to be transmitted to the subscriber side, and the bucket buffer 13-2 stores buckets to be transmitted to the network side.
- the optical / electrical converter 11c converts an optical PON packet into an electric signal or converts an electric PON packet into an optical signal.
- PON termination lib Performs format conversion of packets transmitted from the subscriber to the station, or format conversion of packets transmitted from the station to the subscriber.
- the input unit 11a is a filter for setting the filter settings of the downlink filter 23b and uplink filter 23c in the subscriber terminal unit 20c to be remote from the station side. Evening setting data is generated and transmitted to the PON terminal section 1 1 b.
- the filter setting data is transmitted to the subscriber terminating device 20c via the PON terminator 11b and the optical / electrical converter 11c. Further, it receives the file status data transmitted from the subscriber terminal device 20c via the PON terminal portion 11b.
- the station-side filter information extraction 'input unit 11a' can be connected to the maintenance terminal 5 so that the filter contents, settings, and reading can be performed from an operation.
- a subscriber-side communication I / F unit 211 including a subscriber-side file information extraction / import unit 21c is newly installed.
- Subscriber-side filter information extractionThe import unit 21c receives the filter setting data transmitted from the central office device 10c via the PON termination unit 21b, and sets the filter setting. Notify part 23 a. Also, filter condition data indicating the filter setting contents (current filter operation state) of the downlink filter 23b and the uplink filter 23c is received from the filter setting unit 23a. The filter state data is transmitted to the central office 10c via the PON terminal 21b and the optical / electrical converter 21a.
- the input unit 11a generates filter setting data including information that blocks filtering (for example, it is assumed that the downlink filter 23b is blocked), and generates the filter setting data. In the evening,? It is transmitted to the subscriber terminating device 20c via the ⁇ 1 ⁇ terminating unit 1113 and the optical-Z electrical converting unit 11c.
- the filter setting data is extracted by the subscriber-side filter information extraction / input unit 21c via the optical-Z electrical conversion unit 21a and the PON termination unit 21b, and sent to the filter setting unit 23a. Be trusted.
- the filter setting unit 23 a gives a blocking instruction to the downlink filter 23 b.
- the downlink link filter 23 b transmits all received packets based on the blocking instruction. Discard (in this case, the packet is discarded even if the destination address and terminal address of the packet match).
- the downlink filter 23b was blocked.However, the uplink filter 23c can block the packet transmitted from the terminal 4 or can block both filters. it can.
- the station-side filter information extraction and input unit 11a receives the filter state data transmitted from the subscriber terminal unit 20c and displays it through the maintenance terminal 5, so that the operation is always down. It is possible to monitor the state of the link filter 23b and the uplink filter 23c (for example, whether or not a blocking state is present). Note that control signals such as filter setting data and filter state data are transmitted using empty intervals during transmission of the bucket, which is the original main signal. Therefore, when there is a large amount of traffic in the bucket, the filter setting data and filter state data are used. Do not transmit evening state data.
- the filter setting data is transmitted to the subscriber terminal device 20c.
- the traffic of uplink transmission packets is It is determined that it is not overcrowded, and at this time, the filter status data is transmitted to the station device 10C.
- the filtering content of the subscriber terminal device 20c can be set from the central office device 10c, and the filtering content can be remotely managed by the operation. Therefore, it is possible to prevent unnecessary packets from being delivered to the terminal 4, to simplify maintenance, and to improve the reliability of the access network.
- unnecessary packets were prevented from being delivered by filtering on the subscriber side.However, in the following examples, a packet is generated on the station side so that the subscriber side can recognize that the packet is addressed to itself. Is transmitted.
- FIG. 6 and 7 are diagrams showing the configuration of the communication system.
- Communication systems 1 and 2 FIG. 6 shows the configuration of the central office device 10d
- FIG. 7 shows the configuration of the subscriber terminal device 20d.
- the station equipment 10d is composed of a station-side communication I / F section 11, a layer 2 switch 12, a bucket buffer 13-1, a 13-2, a subscriber information management section 14, and an identification number insertion section 15. It is composed of Also, the station communication I / F section 11 is? Includes 0 ⁇ terminal section 113, optical-Z electrical conversion section 110C.
- the subscriber information management unit 14 and the identification number input unit 15 will be described.
- the subscriber information management unit 14 manages the subscriber information transmitted from the subscriber terminating device 20d.
- the subscriber information includes an identification number of the subscriber terminal device 20d and a terminal address connected to each of the subscriber terminal devices 20d.
- FIG. 8 shows a subscriber information table. It shows an image showing the subscriber information table 14a managed in the subscriber information management unit 14, and shows the correspondence between the identification number of the subscriber terminal device and the terminal address.
- the subscriber information management unit 14 searches the subscriber information table 14a for the terminal to which a packet is to be transmitted on the station side by the terminal address, and obtains the identification number of the desired subscriber terminal device.
- the identification number input unit 15 inserts the identification number into the packet and transmits the packet to the subscriber.
- the subscriber terminating device 20 d in FIG. 7 includes a subscriber-side communication IZF unit 21, a terminal address management unit 22, a packet filter unit 23-1, an uplink filter 23 c, a terminal I / F It consists of F ⁇ ⁇ ⁇ ⁇ 24, packet buffer 25-1 and 25-2.
- the subscriber communication IZF unit 21 includes an optical / electrical conversion unit 21a and a PON termination unit 21b, and the packet fill unit 23-1 is a downlink fill unit 23b. including.
- the subscriber-side communication I ZF unit 21 transmits the subscriber information of its own device (the identification number of the subscriber termination device and the address of the connected terminal) to the central office device 10d. Also, the packet filter unit 23-1, including the downlink filter 23b, transmits only the packet in which the same identification number as that of the own device is inserted to the terminal.
- the central office device 10d attaches the identification number of the subscriber terminal device 20d to the packet and transmits the packet. Only the packets with the same identification number as the device are transmitted. This makes it possible to prevent unnecessary packets from being delivered to terminals.
- the present invention is not limited to the optical access system represented by EP ON, and requires a filtering function that does not transmit unnecessary packets to a subsequent processing unit. It is widely applied to communication systems such as
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2003/009219 WO2005008965A1 (ja) | 2003-07-18 | 2003-07-18 | 通信システム |
CNB038265702A CN100525224C (zh) | 2003-07-18 | 2003-07-18 | 通信系统 |
JP2005504385A JP4294027B2 (ja) | 2003-07-18 | 2003-07-18 | 通信システム |
GB0522978A GB2417853B (en) | 2003-07-18 | 2003-07-18 | Communication system |
US11/271,689 US20060067691A1 (en) | 2003-07-18 | 2005-11-10 | Communication system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2003/009219 WO2005008965A1 (ja) | 2003-07-18 | 2003-07-18 | 通信システム |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/271,689 Continuation US20060067691A1 (en) | 2003-07-18 | 2005-11-10 | Communication system |
Publications (1)
Publication Number | Publication Date |
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WO2005008965A1 true WO2005008965A1 (ja) | 2005-01-27 |
Family
ID=34074121
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2003/009219 WO2005008965A1 (ja) | 2003-07-18 | 2003-07-18 | 通信システム |
Country Status (5)
Country | Link |
---|---|
US (1) | US20060067691A1 (ja) |
JP (1) | JP4294027B2 (ja) |
CN (1) | CN100525224C (ja) |
GB (1) | GB2417853B (ja) |
WO (1) | WO2005008965A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2008306681A (ja) * | 2007-06-11 | 2008-12-18 | Mitsubishi Electric Corp | 通信システム、および局側通信装置 |
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KR100605855B1 (ko) * | 2003-09-08 | 2006-07-31 | 삼성전자주식회사 | 방송 스위칭을 통한 방송 통신 융합 ftth망 |
US20060083240A1 (en) * | 2004-10-19 | 2006-04-20 | Padcom, Inc. | Broadcasting data over multiple dissimilar wireless networks |
KR100703379B1 (ko) * | 2005-02-16 | 2007-04-03 | 삼성전자주식회사 | 무선 송수신 장치 |
JP4457964B2 (ja) * | 2005-05-11 | 2010-04-28 | 株式会社日立製作所 | Atm−ponシステムおよびonu自動接続方法 |
CN101064682B (zh) | 2006-04-29 | 2010-08-04 | 华为技术有限公司 | 光网络终端及其报文处理方法 |
JP4460070B1 (ja) * | 2008-12-26 | 2010-05-12 | 古河電気工業株式会社 | 加入者宅側光回線終端装置 |
EP2401828B1 (en) * | 2009-02-24 | 2013-04-10 | Telefonaktiebolaget LM Ericsson (publ) | Dynamic scheduling using pon bandwidth allocation on lower aggregation levels |
EP2469786B1 (en) * | 2009-08-21 | 2020-11-04 | Mitsubishi Electric Corporation | Pon system, subscriber-end terminal apparatus, station-end terminal apparatus and power saving method |
US20140355989A1 (en) * | 2010-05-17 | 2014-12-04 | Cox Communications, Inc. | Systems and methods for providing broadband communication |
US8493986B2 (en) | 2010-05-17 | 2013-07-23 | Cox Communications, Inc. | Service gateways for providing broadband communication |
WO2013082568A1 (en) * | 2011-12-02 | 2013-06-06 | Huawei Technologies Co., Ltd. | Apparatus and method for registering a coaxial network unit on an optical network |
EP2962474B1 (en) * | 2013-02-26 | 2020-12-02 | ZTE Corporation | Channel map for optical network unit activation and rogue behavior prevention |
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JP2004186932A (ja) * | 2002-12-03 | 2004-07-02 | Fujitsu Ltd | 光アクセスシステム |
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2003
- 2003-07-18 CN CNB038265702A patent/CN100525224C/zh not_active Expired - Fee Related
- 2003-07-18 WO PCT/JP2003/009219 patent/WO2005008965A1/ja active Application Filing
- 2003-07-18 GB GB0522978A patent/GB2417853B/en not_active Expired - Fee Related
- 2003-07-18 JP JP2005504385A patent/JP4294027B2/ja not_active Expired - Fee Related
-
2005
- 2005-11-10 US US11/271,689 patent/US20060067691A1/en not_active Abandoned
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JP2002217934A (ja) * | 2001-01-16 | 2002-08-02 | Nippon Telegr & Teleph Corp <Ntt> | 光アクセスネットワークシステムおよびそのセンター側装置ならびに光加入者線終端装置 |
JP2003169067A (ja) * | 2001-11-29 | 2003-06-13 | Mitsubishi Electric Corp | 光分岐ネットワークシステム |
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JP2008306681A (ja) * | 2007-06-11 | 2008-12-18 | Mitsubishi Electric Corp | 通信システム、および局側通信装置 |
Also Published As
Publication number | Publication date |
---|---|
CN100525224C (zh) | 2009-08-05 |
GB2417853A (en) | 2006-03-08 |
GB0522978D0 (en) | 2005-12-21 |
JPWO2005008965A1 (ja) | 2006-09-07 |
CN1788454A (zh) | 2006-06-14 |
US20060067691A1 (en) | 2006-03-30 |
GB2417853B (en) | 2008-07-30 |
JP4294027B2 (ja) | 2009-07-08 |
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