[go: up one dir, main page]

WO2012120645A1 - Système pon, dispositif formant terminaison de ligne optique et dispositif formant terminal de chemin de transmission optique - Google Patents

Système pon, dispositif formant terminaison de ligne optique et dispositif formant terminal de chemin de transmission optique Download PDF

Info

Publication number
WO2012120645A1
WO2012120645A1 PCT/JP2011/055392 JP2011055392W WO2012120645A1 WO 2012120645 A1 WO2012120645 A1 WO 2012120645A1 JP 2011055392 W JP2011055392 W JP 2011055392W WO 2012120645 A1 WO2012120645 A1 WO 2012120645A1
Authority
WO
WIPO (PCT)
Prior art keywords
optical
user terminal
transmission line
identifier
llid
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2011/055392
Other languages
English (en)
Japanese (ja)
Inventor
大輔 真下
淳 栖川
池田　博樹
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to PCT/JP2011/055392 priority Critical patent/WO2012120645A1/fr
Publication of WO2012120645A1 publication Critical patent/WO2012120645A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/25—Arrangements specific to fibre transmission
    • H04B10/2575—Radio-over-fibre, e.g. radio frequency signal modulated onto an optical carrier
    • H04B10/25752—Optical arrangements for wireless networks
    • H04B10/25753—Distribution optical network, e.g. between a base station and a plurality of remote units
    • H04B10/25754—Star network topology

Definitions

  • the present invention relates to a wireless terminal handover technique when a wireless base station is accommodated in a PON system.
  • the PON (: Passive Optical Network) system is a high-speed / high-capacity network that shares optical fiber and OLT (Optical Network Terminal, subscriber accommodation equipment) with multiple ONUs (Optical Network Unit, optical subscriber termination equipment). It is an optical access system and supports the current FTTH service as a technology that can control the cost per user.
  • Downlink transmission from the OLT to the ONU employs a time division multiplexing (TDM) method using continuous signals.
  • TDM time division multiplexing
  • the OLT assigns an LLID (: Logical Link ID) to each ONU, and the ONU reads the LLID inserted in the data to determine the data addressed to itself.
  • Non-Patent Document 1 defines a transmission speed of 10 Gbps, a maximum number of branches of 32, and a maximum transmission distance of 20 km.
  • broadband wireless access (BWA) technology is rapidly expanding due to its high flexibility, enabling broadband services to be provided to users with conventional wired connections and users in sparsely populated areas.
  • BWA broadband wireless access
  • technologies such as HSPA (High Speed Packet Access) and WiMAX (Worldwide Interoperability for Microwave Access) have appeared, and the communication speed has improved rapidly. Therefore, it is expected that BWA services will continue to expand globally.
  • the PON system generally inserts LLID for each destination ONU into a MAC frame and establishes a logical P2P link between OLT-ONUs for communication.
  • the ONU requests bandwidth allocation based on the amount of data transmitted from the lower network for the uplink data, inserts the LLID, and transmits it to the OLT.
  • the ONU transmits only the data in which the LLID addressed to itself is inserted to the lower network, and discards other data.
  • FIG. 1 shows the LLID insertion position in the MAC frame in 10G-EPON. In 10G-EPON, a field of 2 octets is secured in the preamble of the MAC frame.
  • a passive optical network system in which an optical transmission line termination device and a plurality of optical line termination devices are connected via an optical fiber, a wireless base station that accommodates wireless user terminals respectively connected to a plurality of ONUs, the OLT and the Internet And the optical transmission line termination device gives an LLID (Logical Link ID) to each wireless user terminal, and the optical line termination device accommodates the wireless base station accommodated by itself.
  • the wireless user terminal detects that the wireless user terminal has moved into the communication area, the LLID of the detected wireless user terminal is requested to the optical transmission line termination device, and the optical transmission line termination device is assigned to the user terminal.
  • the LLID is notified to the optical network unit.
  • a wireless station accommodating PON system even when a user terminal moves during communication, handover can be executed without disconnecting communication.
  • an increase in bandwidth used per user that occurs when a single star mobile backhaul is used is prevented.
  • FIG. 2 shows a configuration example of a wireless base station accommodating PON system to which the present invention is applied.
  • This system includes an Internet 1, OLTs 10 and 11, a GW (Gate Way) 2 that connects the Internet 1 and the OLTs 10 and 11, and optical splitters 20 and 21 that branch optical fibers connected to the OLTs 10 and 11.
  • the radio base stations 40, 41, 42, and 43 have communication areas 60, 61, 62, and 63, respectively, and users 50, 51, 52, 53, 54, and 55 exist in any of the areas. .
  • FIG. 5 shows an apparatus diagram of the base station.
  • the base station includes an ONU transmission / reception unit 401, a data processing unit 402, a wireless transmission / reception unit 403, and a user information unit 404.
  • the ONU side transceiver 401 of the base station has a function of transmitting uplink data from a wireless user to the ONU and receiving downlink data from the ONU.
  • the radio-side transmitting / receiving unit 403 has a function of transmitting downlink data from the ONU to the destination user and receiving uplink data from the user.
  • the data processing unit 402 includes data conversion and scheduling for transmitting and receiving uplink and downlink data, and a connection management function with a wireless terminal and ONU.
  • the user information unit 404 holds connection information such as a connected user's MAC address and terminal ID in a user information table.
  • the data processing unit 402 When a user newly establishes a connection within the communication area of the base station's own base station, the data processing unit 402 registers the user's MAC address in the user information table of the user information unit 404, and further, for the ONU Send the MAC address notification of the same user.
  • the MAC address notification includes a control frame identification field and a user MAC address.
  • the data processing unit 402 deletes the MAC address of the user from the user information table in the user information unit 404, and the ONU A delete notification of the same user is transmitted to.
  • the erasure notification includes a control frame identification field and a user MAC address.
  • FIG. 6 shows the configuration of the ONU.
  • the ONU includes a WDM coupler 301, a transceiver 302, a PON PHY 303, a PON MAC 304, and a radio base station IF (InterFace) 305.
  • the WDM coupler 301 performs multiplexing / demultiplexing of the upstream and downstream optical signals.
  • the transceiver 302 converts the upstream electrical signal input from the PON PHY 303 into an optical signal and transmits it, and also converts the downstream optical signal input from the WDM coupler 301 into an electrical signal and transmits it to the PON PHY 303 at the subsequent stage.
  • the PON PHY 303 performs encoding and parallel / serial conversion on the uplink signal input from the PON MAC 304 and transmits the result to the transceiver 302. Also, the downlink signal input from the transceiver 302 is clock-synchronized, bit-determined, serial / parallel converted, decoded, and transmitted to the PON MAC 304.
  • the PON MAC 304 is equipped with an upstream and downstream data processing function, MPCP (Multi Point Control Protocol) which is a control protocol of the PON system, and the like.
  • MPCP Multi Point Control Protocol
  • the radio base station IF 305 is an interface for connecting a radio base station, and transmits downlink data from the PON MAC 304 to the radio base station. Also, the uplink data from the radio base station is output to the PON MAC 304.
  • the ONU holds an ONU information table in the PON MAC 304.
  • Each ONU information table includes the MAC address of the user terminal existing in the communication area of the accommodated base station and the LLID assigned to the OLT.
  • the PON-MAC 304 of the ONU transmits the received MAC address notification to the OLT and transmits the new user's MAC address notification.
  • Check LLID When the ONU PON MAC 304 receives the LLID notification of the new user from the OLT, it records both the received LLID and the MAC address of the user terminal in the ONU information table.
  • the LLID notification includes a control frame identification field, a user MAC address, and a user LLID.
  • the ONU PON MAC 304 Upon receiving the user deletion notification from the base station, the ONU PON MAC 304 deletes the item corresponding to the MAC address included in the user deletion notification from the ONU information table of the PON MAC 304, and further the PON MAC 304 notifies the OLT to the user deletion notification. Send.
  • the ONU When the ONU receives the uplink data from the base station, the ONU adds the LLID held in the ONU information table of the PON MAC 304 to the uplink data and transmits it to the OLT at the time allocated to the OLT.
  • the ONU When the ONU receives the downlink data from the OLT, the ONU refers to the LLID of the downlink data received by the PON MAC 304, and when the LLID is registered in the ONU information table, the ONU receives the downlink data received by the accommodating base station. Send. Downlink data in which an LLID in which the LLID is not registered in the ONU information table is inserted is discarded.
  • the ONU When the ONU sends a MAC address notification or erasure notification from the PON MAC 304 to the OLT, the ONU inserts the LLID given to the ONU into the control frame.
  • FIG. 7 shows the configuration of the OLT.
  • the OLT includes a WDM coupler 101, a transceiver 102, a PON PHY 103, a PON MAC 104, and an NNI (Network-Network Interface) 105.
  • the WDM coupler 101 performs multiplexing / demultiplexing of upstream and downstream optical signals.
  • the transceiver 102 converts the downstream electrical signal input from the PON PHY 103 into an optical signal and transmits it, and also converts the downstream optical signal input from the WDM coupler 101 into an electrical signal and transmits it to the PON PHY 103 at the subsequent stage.
  • the PON PHY 103 performs encoding and parallel / serial conversion on the downlink signal input from the PON MAC 104 and transmits the result to the transceiver 102.
  • the uplink signal input from the transmitter / receiver 102 is clock-synchronized, bit-determined, serial / parallel converted, decoded, and transmitted to the PON MAC 104.
  • the PON MAC 104 is equipped with an upstream and downstream data processing function, MPCP (Multi Point Control Protocol) which is a control protocol of the PON system, and the like.
  • MPCP Multi Point Control Protocol
  • the NNI 105 is an interface for connecting to the GW, and transmits uplink data from the PON MAC 104 to the GW. Also, the downlink data from the GW is output to the PON MAC 104.
  • the OLT holds an OLT information table in the PON MAC 104.
  • the OLT information table includes the MAC address of the user terminal existing in the communication area of the base station accommodated by the ONU connected to the OLT, the LLID assigned by the OLT corresponding to the MAC address, and the user terminal Contains the ID of the ONU that sent the MAC address notification.
  • the OLT When the OLT receives the MAC address notification from the ONU, the OLT refers to the OLT information table of the PON MAC 104 and specifies whether or not the MAC address notified by the MAC address notification is already registered. When the MAC address notified by the MAC address notification is already registered, the ID of the ONU that notified the MAC address notification is added in association with the MAC address in the OLT control table. Further, the OLT transmits an LLID notification describing the corresponding LLID from the PON MAC 104 to the ONU that has transmitted the MAC address notification.
  • the OLT further transmits a data transmission notification of the user from the PON-MAC 104 to the GW.
  • the data transmission notification includes a control frame identification field, a user MAC address, and an OLT ID.
  • the PON MAC 104 When the OLT receives downlink data from the GW, the PON MAC 104 refers to the destination MAC address and the OLT information table, inserts the LLID corresponding to the destination MAC address, and transmits it to the ONU.
  • the OLT When the OLT receives the deletion notification from the ONU, the OLT deletes the ONU ID corresponding to the user in the OLT information table of the PON MAC 104. When all the registered ONU IDs of the corresponding user are deleted, the MAC address and LLID are also deleted from the OLT information table of the PON MAC 104. Further, the OLT transmits a data stop notification of the user from the PON MAC 104 to the GW.
  • the data stop notification includes a control frame identification field, a user MAC address, and an OLT ID.
  • FIG. 8 shows the device configuration of the GW.
  • the GW includes an upper NW (Network) side transmission / reception unit 201, a data processing unit 202, an OLT side transmission / reception unit 203, and a GW information unit 204.
  • the upper NW side transmission / reception unit 401 has a function of transmitting uplink data from the OLT to the Internet and receiving downlink data from the Internet.
  • the OLT side transmitting / receiving unit 203 has a function of transmitting downlink data from the Internet to the OLT and receiving uplink data from the OLT.
  • the data processing unit 202 has data conversion for transmitting and receiving uplink and downlink data and a connection management function with the OLT.
  • the GW information unit 204 holds the MAC address of the user connected to the base station of the lower NW and the ID of the OLT existing above the base station to which the corresponding user is connected by the GW information table.
  • the GW When the GW receives the data transmission notification from the OLT, the GW records the MAC address described in the data transmission notification and the ID of the OLT that transmitted the data transmission notification in the GW information table of the GW information unit 204.
  • the data processing unit 202 When the GW receives downlink data from the Internet, the data processing unit 202 refers to the MAC address of the downlink data and the GW information table of the GW information unit 204, and transmits the data to the corresponding OLT.
  • the GW When the GW receives the data stop notification from the OLT, the GW deletes the ID of the OLT corresponding to the MAC address included in the data stop notification from the information held in the GW information table of the GW information unit 204. As a result, transmission of data whose destination is the corresponding MAC address to the OLT is stopped. At this time, if all IDs of the OLT corresponding to the corresponding MAC address are deleted, the corresponding MAC address is deleted.
  • the base station 40 When the base station 40 detects the user 50 existing in the area 60, the base station 40 transmits a MAC address notification to the ONU 30 (S100). In the example of FIG. 3, User 50 is notified. If the MAC address included in the MAC address notification is not held in the ONU control table, the ONU 30 transmits the MAC address notification to the OLT 10 (S101).
  • the OLT 10 When the OLT 10 receives the MAC address notification from the ONU, the OLT 10 refers to the OLT information table 80 shown in FIG. 9 and confirms whether the MAC address included in the MAC address notification is registered in the OLT information table 80. When the MAC address included in the MAC address notification is not registered in the OLT information table 80, the OLT gives LLID to the MAC address described in the MAC address notification. In the example of FIG. 9, since the MAC address (User50) described in the MAC address notification is not registered, the OLT 10 assigns a new LLID (ID0_50), and the MAC address (User50) and ONU ID (30). At the same time, it is recorded in the OLT control table 80.
  • the entry 801 of the OLT control table is created. (However, ONU IO (31) is not held here.) Then, the OLT 10 transmits an LLID notification including the newly assigned LLID (ID0_50) and the user's MAC address (User50) to the ONU 30 (S102). ). When the ONU 30 receives the LLID notification from the OLT 10, it registers the MAC address (User50) and LLID (ID0_50) in the ONU information table 90 shown in FIG. Thereby, the entry 901 of the ONU control table 90 is created. The OLT 10 transmits a data transmission notification including the user's MAC address (User50) and OLTID (10) to the GW 2 (S103).
  • the GW 2 When the GW 2 receives the data transmission notification from the OLT 10, the MAC address (User 50) and the OLTOLID (10) are registered in the GW information table 70 shown in FIG. 12, and an entry 701 is created. As a result, the GW 2 transmits downlink data addressed to the user 50 to the OLT 10 (S106).
  • the OLT 10 When the OLT 10 receives the downlink data from the GW 2, the OLT 10 refers to the OLT control table 80, inserts the LLID (ID0_50) into the MAC frame addressed to the user 50, and transmits it to the ONUs 30 and 31.
  • the ONU 30 receives the downlink data from the OLT 10
  • the ONU 30 confirms whether the LLID (ID0_50) included in the downlink data is registered in the ONU information table 90. Since ONL 30 has LLID (ID0_50) registered in the ONU information table 90, the ONU 30 performs reception processing on the downlink data and transmits the downlink data subjected to the reception processing to the base station 40.
  • the base station 40 transmits the downlink data to the user 50 (S104, S105).
  • the ONU 31 discards the downlink data addressed to the user 50 including the LLID (ID0_50) (S105).
  • the base station 41 transmits a MAC address notification including User50, which is the MAC address of the user 50, to the ONU 31 (S107). If the MAC address User50 is not registered in the ONU information table 91, the ONU 31 transmits the MAC address notification to the OLT 10 (S108). Since the LLID (ID0_50) corresponding to the User 50 has already been registered in the OLT information table 80, the OLT 10 transmits an LLID notification including the LLID (ID0_50) and the MAC address (User50) to the ONU 31. At this time, the OLT 10 adds the ONU ID (31) to the ONUID corresponding to the User 50 in the OLT information table 80 (S109).
  • the ONU 31 that has received the LLID notification from the OLT 10 registers the MAC address (User50) and LLID (ID0_50) included in the LLID notification in the ONU information table 91, and an entry 911 is created. Then, until now, the ONU 31 has discarded the data addressed to the user 50, but since the LLID (ID0_50) is registered in the ONU information table 91, the ONU 31 receives the downlink data addressed to the user 50 and sends it to the base station 41. To send. At this time, the user 50 receives data from both the base stations 40 and 41 (S110, S111, S112, S113). For this, it is assumed that the user 50's terminal receives the data with the better radio wave condition.
  • the base station 40 When the base station 40 cannot detect the user 50, the base station 40 transmits an erasure notification of the user 50 including the MAC address User50 of the user 50 to the ONU 30 (S114).
  • the ONU 30 When the ONU 30 receives the user deletion notification, the ONU 30 refers to the MAC address included in the user deletion notification and holds the MAC address (User50) and the MAC address (User50) of the user 50 in the ONU information table 90. Delete LLID (ID0_50). Further, the ONU 30 transmits the erasure notification to the OLT 10 (S115).
  • the OLT 10 When the OLT 10 receives the erasure notification, the OLT 10 refers to the MAC address User50 included in the erasure notification, and among the ONU IDs held in correspondence with the user 50 (MAC address User50) in the OLT information table 80, the erasure notification Delete the ONU ID (30) of the ONU that sent. Thereafter, the ONU 30 does not have an entry registered with the LLID (ID0_50) in the ONU information table 90, so the downlink data addressed to the user 50 is discarded, and only the ONU 31 receives the downlink data addressed to the user 50. .
  • the base station 41 transmits an erasure notification of the user 50 to the ONU 31 (S119).
  • the ONU 31 deletes the LLID (ID0_50) held in correspondence with the MAC address (User50) and the MAC address (User50) of the user 50 in the ONU information table 91. Further, the ONU 31 transmits the erasure notification to the OLT 10 (S120).
  • the OLT 10 receives the erasure notification from the ONU 31, the OLT ID (31) that is the ID of the ONU 31 that has transmitted the erasure notification from the ONUID held in correspondence with the user 50 (MAC address User50) in the OLT information table 80 is obtained. to erase.
  • the OLT 1 determines that the user 50 has moved from the lower network of the OLT 10 because the ONU ID held in correspondence with the MAC address User50 has been deleted in the OLT control table 80, and the MAC address (User50) of the user 50 is determined. ) And LLID (ID0_50) are deleted from the OLT control table 80. Thus, this LLID (ID0_50) can be used again when another user is newly registered.
  • the OLT 10 transmits a data stop notification of the user 50 to the GW 2 (S121).
  • GW2 which has received the data stop notification, refers to the MAC address Use50 included in the data stop notification, and deletes the OLT ID (10) corresponding to the user 50 in the GW information table 70. Further, the GW 2 deletes the MAC address (User 50) because all the OLT IDs held corresponding to the MAC address Use 50 have been deleted in the GW control table 70. Thereafter, even if the data addressed to the user 50 is received by the GW2, it is not transmitted to the OLT10. In this way, by assigning LLID to each user and using the same ID after moving, handover can be executed without disconnecting communication in the radio base station accommodating PON system.
  • the GW needs to acquire the location information of the user terminal and needs to be updated every time the user terminal moves. Therefore, the amount of information to be held and the message overhead can be reduced.
  • the present invention is applied to a wireless network such as a femtocell where the frequency of occurrence of handover is high and the number of branches of the GW lower network is large, the message overhead can be further reduced.
  • OLT 10 and OLT 11 are connected to GW 2
  • ONU 31 is connected to OLT 10
  • ONU 32 is connected to OLT 11.
  • the operation when the user 52 moves from the communication area 61 of the base station 41 accommodated by the ONU 31 to the communication area 62 of the base station 42 accommodated by the ONU 32 will be described.
  • the functions of GW, OLT, ONU, and base station are the same as those in the first embodiment. In this embodiment, it is assumed that wireless LAN terminals are accommodated.
  • a MAC address notification is transmitted to the ONU 31 (S200).
  • the ONU 31 transmits the MAC address notification to the OLT 10 (S201).
  • the OLT 10 refers to the OLT information table 81 shown in FIG.
  • LLID (ID0_52) is newly assigned to the MAC address (User 52), and the MAC address is stored in the OLT information table 81.
  • LLID (ID0_52) is recorded together with (User52) and ONU ID (31), and an entry 811 is created. Then, the LLID notification is transmitted to the ONU 31 (S202).
  • the ONU 31 When the ONU 31 receives the LLID notification, it registers the MAC address (User 52) and LL ID (ID0_52) in the ONU information table 92 shown in FIG. Further, the OLT 10 transmits a data transmission notification to the GW 2 (S203).
  • the GW 2 When the GW 2 receives the data transmission notification from the OLT 10, the GW 2 registers the MAC address (User 52) and the OLT ID (10) included in the data transmission notification in the GW information table 71 shown in FIG. 19 and creates an entry 711. However, at this time, the OLT ID (11) is not registered. As a result, the GW 2 transmits data addressed to the user 52 to the OLT 10 (S206).
  • the OLT 10 inserts LLID (ID0_52) into the MAC frame addressed to the user 52 and transmits it to the ONU 31.
  • the ONU 31 receives data addressed to the user 52, transmits it to the base station 41, and transmits it to the user 52 (S204, S205).
  • the base station 42 transmits a MAC address notification to the ONU 32 (S207), and the ONU 32 transmits the MAC address notification to the OLT 11 (S208).
  • S207 the ONU 32
  • S208 the MAC address notification to the OLT 11
  • an LLID (ID1_52) is assigned, and the MAC address (User 52) and The ONU ID (32) and the newly assigned LLID (ID1_52) are recorded in the OLT control table 81 to create an entry 821.
  • the OLT 11 transmits an LLID notification to the ONU 32 (S209).
  • the ONU 32 registers the MAC address (User 52) and LL ID (ID0_52) in the ONU information table 93.
  • the OLT 11 transmits a data transmission notification to the GW 2 (S210).
  • the GW 2 receives the data transmission notification from the OLT 11, the GW 2 additionally registers the OLT ID (11) with the OLT ID held corresponding to the MAC address (User 52) in the GW information table 71. Thereafter, the GW 2 transmits downlink data addressed to the user 52 to both the OLTs 10 and 11 (S213, S216).
  • the OLT 11 inserts LLID (ID1_52) into the MAC frame addressed to the user 52 and transmits it to the ONU 32.
  • the ONU 32 receives the downlink data addressed to the user 52 and transmits the received downlink data to the base station 42.
  • the base station 42 transmits downlink data addressed to the user 52 to the user 52 (S214, S215).
  • different LLIDs ID0_52 and ID1_52 are used for the same user 52, and the user 52 receives data from both the base stations 41 and 42 (S211, S212, S214, S215).
  • the base station 41 transmits a deletion notification of the user 52 to the ONU 31 (S217).
  • the ONU 31 deletes the MAC address (User 52) and LLID (ID0_52) of the user 52 in the ONU information table 92, and transmits the deletion notification to the OLT 10 (S218).
  • the OLT 10 erases the ONU ID (31) of the user 52 in the OLT information table 81.
  • the OLT 10 determines that the user 52 has moved out of the lower network of the OLT 10 and deletes the MAC address (User52) and LLID (ID0_52) of the user 52 from the OLT information table 81. Then, the data stop notification of the user 52 is transmitted to the GW 2 (S219). The GW 2 receiving the data stop notification deletes the OLT ID (10) corresponding to the user 52 in the GW information table 71. Thereafter, data is transmitted to the user 52 only via the OLT 11 and the ONU 32 (S220, S221).
  • the deletion notification of the user 52 is transmitted to the ONU 32 (S223).
  • the ONU 32 deletes the MAC address (User52) and LLID (ID1_52) of the user 52 in the information table 93, and transmits the deletion notification to the OLT 11 (S224).
  • the OLT 11 deletes the ONU ID (32) of the user 52 in the OLT information table 82.
  • the OLT 11 determines that the user 50 has moved out of the jurisdiction of the OLT 10 and deletes the user 50's MAC address (User52) and LLID (ID1_52) from the OLT information table 82. . Further, the OLT 11 transmits a data stop notification of the user 52 to the GW 2 (S225). The GW 2 that has received the data stop notification deletes the OLT ID (11) corresponding to the user 52 in the GW information table 71, and further deletes the MAC address (User 52) because no OLT ID has been registered. Thereafter, even if the data addressed to the user 52 is received by the GW2, it is not transmitted to the OLTs 10 and 11.
  • each of the above-described embodiments is a preferred embodiment of the present invention, and can be modified within a range that does not depart from the gist of the present invention.
  • the MAC address is used as the terminal identifier, but there is no problem even if the terminal ID is used.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

Dans un système PON qui héberge une station de base sans fil dans un PON, quand un terminal sans fil se déplace pour entrer dans la zone de couverture d'une autre station de base durant une communication, il est impossible de réaliser un transfert intercellulaire sans couper la communication. Ceci est dû au fait qu'une ONU abandonne toutes les données sur la liaison descendante à l'exception d'un LLID correspondant. La présente invention se rapporte à un procédé de transfert intercellulaire caractérisé en ce que le LLID est donné à chaque terminal d'utilisateur et que l'OLT et l'ONU maintiennent des données relatives à l'adresse MAC et au LLID du terminal d'utilisateur. Dans ces conditions, une communication [NAE1] n'est pas interrompue quand un terminal sans fil se déplace [NAE2]. La transmission est alors réalisée dans une section du PON, sur la base du même LLID que celui qui était présent avant le déplacement.
PCT/JP2011/055392 2011-03-08 2011-03-08 Système pon, dispositif formant terminaison de ligne optique et dispositif formant terminal de chemin de transmission optique Ceased WO2012120645A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/JP2011/055392 WO2012120645A1 (fr) 2011-03-08 2011-03-08 Système pon, dispositif formant terminaison de ligne optique et dispositif formant terminal de chemin de transmission optique

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2011/055392 WO2012120645A1 (fr) 2011-03-08 2011-03-08 Système pon, dispositif formant terminaison de ligne optique et dispositif formant terminal de chemin de transmission optique

Publications (1)

Publication Number Publication Date
WO2012120645A1 true WO2012120645A1 (fr) 2012-09-13

Family

ID=46797648

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2011/055392 Ceased WO2012120645A1 (fr) 2011-03-08 2011-03-08 Système pon, dispositif formant terminaison de ligne optique et dispositif formant terminal de chemin de transmission optique

Country Status (1)

Country Link
WO (1) WO2012120645A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104219089A (zh) * 2014-08-25 2014-12-17 深圳键桥通讯技术股份有限公司 一种pon网管自动发现onu设备并自动生成拓扑方法
WO2016062034A1 (fr) * 2014-10-24 2016-04-28 深圳市中兴微电子技术有限公司 Dispositif et procédé de traitement de données, unité de commande de données et support de mémorisation
WO2018168144A1 (fr) * 2017-03-16 2018-09-20 住友電気工業株式会社 Dispositif côté maison et procédé de suppression de table de gestion
US11606161B2 (en) 2019-10-01 2023-03-14 Mitsubishi Electric Corporation Transmission/reception device and transmission/reception method

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010206327A (ja) * 2009-02-27 2010-09-16 Oki Networks Co Ltd 光多重伝送システム、精密時刻同期装置、伝送制御信号生成装置、及び光多重伝送システムにおける精密時刻同期方法

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010206327A (ja) * 2009-02-27 2010-09-16 Oki Networks Co Ltd 光多重伝送システム、精密時刻同期装置、伝送制御信号生成装置、及び光多重伝送システムにおける精密時刻同期方法

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104219089A (zh) * 2014-08-25 2014-12-17 深圳键桥通讯技术股份有限公司 一种pon网管自动发现onu设备并自动生成拓扑方法
WO2016062034A1 (fr) * 2014-10-24 2016-04-28 深圳市中兴微电子技术有限公司 Dispositif et procédé de traitement de données, unité de commande de données et support de mémorisation
WO2018168144A1 (fr) * 2017-03-16 2018-09-20 住友電気工業株式会社 Dispositif côté maison et procédé de suppression de table de gestion
US11606161B2 (en) 2019-10-01 2023-03-14 Mitsubishi Electric Corporation Transmission/reception device and transmission/reception method

Similar Documents

Publication Publication Date Title
Ranaweera et al. Next generation optical-wireless converged network architectures
US12021560B1 (en) Apparatus and method for joint profile-based slicing of mobile access and optical backhaul
JP5114268B2 (ja) 受動光網システムおよびその運用方法
KR100480366B1 (ko) E-pon의 가상 랜 구성 시스템 및 방법, 그 프로그램이 저장된 기록매체
JP5564393B2 (ja) 受動光網システム
US9793993B2 (en) Method and apparatus of delivering upstream data in ethernet passive optical network over coaxial network
CN103650422B (zh) 多波长无源光网络的波长协商方法、系统和装置
TWI725274B (zh) 資料通信系統、光線路終端及基帶單元
JP4676517B2 (ja) 光アクセスシステム、光通信路切替装置及び光回線装置
US8200088B2 (en) Optical communication system, and optical communication method and communication unit therefor
JP5460886B2 (ja) 論理リンク管理方法および通信装置
RU2765991C1 (ru) Сеть связи и соответствующие устройства
CN101778314A (zh) 光通信系统及其运用方法
US11824963B2 (en) Packet processing method and device
CN104581446A (zh) Pon系统中支持基站间直接通信的方法和装置
WO2006124101A2 (fr) Adaptation de multiples segments optiques dans un reseau optique ethernet passif
WO2012120645A1 (fr) Système pon, dispositif formant terminaison de ligne optique et dispositif formant terminal de chemin de transmission optique
JP6459588B2 (ja) アクセス制御システム、アクセス制御方法、親局装置及び子局装置
Hantoro et al. GPON performance analysis for 5G backhaul solutions
WO2012163039A1 (fr) Procédé et dispositif de protection de communications
KR20210008072A (ko) 데이터 처리 방법과 장치, 및 통신 시스템
Chanclou et al. FTTH and 5G Xhaul synergies for the present and future
JP5015278B2 (ja) 光アクセスシステム、光回線装置、及び光通信路切替装置
US20190044617A1 (en) Transmission system and method of a frame transmission
JP2015082784A (ja) 光通信システム、通信制御方法及び局側光回線終端装置

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 11860540

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 11860540

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: JP