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公开(公告)号：US20220201493A1
公开(公告)日：2022-06-23
申请号：US17602893
申请日：2020-03-26
Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
Inventor： Naotaka SHIBATA , Keita TAKAHASHI , Tatsuya FUKUI , Hideaki KIMURA , Hirofumi YAMAMOTO , Noriyuki OTA , Jun TERADA
Abstract: Signal transfer devices that relay base stations of service providers that perform communication with radio terminals and an aggregation station that controls the base stations, and a route control device that controls signal distribution to user network interfaces (UNIs) and network network interfaces (NNIs) of each of the signal transfer devices, are included. The route control device includes an allocation information acquisition unit that acquires allocation information of frequency to each of the base stations; a band adjustment unit that adjusts an MBH band for each of the UNIs, on the basis of correspondence relation information representing a correspondence relation between the UNIs and the service providers, band information indicating a maximum MBH band of each of the UNIs, and the allocation information; and a distribution determination unit that determines signal distribution to each of the NNIs, on the basis of the MBH band adjusted by the band adjustment unit and configuration information representing a connection configuration of each of the signal transfer devices. The signal transfer device transmits a signal from each of the NNIs on the basis of the signal distribution to each of the NNIs determined by the distribution determination unit.
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公开(公告)号：US20220200702A1
公开(公告)日：2022-06-23
申请号：US17602954
申请日：2020-03-26
Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
Inventor： Naotaka SHIBATA , Keita TAKAHASHI , Tatsuya FUKUI , Hideaki KIMURA , Hirofumi YAMAMOTO , Noriyuki OTA , Jun TERADA
IPC: H04B10/112 , H04J14/02 , H04B10/272 , H04W72/04
Abstract: An uplink transmission band and a downlink transmission band that are allocated to each of a plurality of users are determined based on allocation information indicating allocation of a frequency bandwidth available to each of the plurality of users, and are output as uplink transmission band allocation information and downlink transmission band allocation information, respectively. Based on the downlink transmission band allocation information, downlink signals output from a plurality of wireless control devices toward a plurality of wireless devices for each of the plurality of users, and the uplink transmission band allocation information are multiplexed, and the multiplexed signal is demultiplexed into downlink signals for each of the plurality of users and the uplink transmission band allocation information. Based on the demultiplexed uplink transmission band allocation information, the uplink transmission band allocated to each of the plurality of users is changed, and uplink signals output from the plurality of wireless devices toward the plurality of wireless control devices for each of the plurality of users are multiplexed according to the changed uplink transmission band and then, the multiplexed signal is demultiplexed into the uplink signals for each of the plurality of users.
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公开(公告)号：US20230319604A1
公开(公告)日：2023-10-05
申请号：US18022607
申请日：2020-08-27
Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
Inventor： Hiroko NOMURA , Hirofumi YAMAMOTO , Keita TAKAHASHI
IPC: H04W24/04
Abstract: A slave station system 2 includes a first individual function unit 11a connected to a first master station device 3a and corresponding to the first master station device 3a, a second individual function unit 11b connected to a second master station device 3b and corresponding to the second master station device 3b, and a common function unit 21 connected to the first individual function unit 11a and the second individual function unit 11b and functioning regardless of the types of a plurality of master station devices. The first individual function unit 11a and the second individual function unit 11b are mounted on the same shared slave station device 10. The first individual function unit 11a and the second individual function unit 11b are configured to be operable independently of each other. The first individual function unit 11a includes a restoration function operated at least either manually or dynamically. The second individual function unit 11b includes a restoration function operated at least either manually or dynamically.
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Patent Agency Ranking
公开(公告)号：US20220006509A1
公开(公告)日：2022-01-06
申请号：US17291254
申请日：2019-10-25
Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
Inventor： Naotaka SHIBATA , Hirofumi YAMAMOTO , Keita TAKAHASHI , Noriyuki OTA , Jun TERADA
Abstract: A relay device that relays between a plurality of radio devices that perform radio communication with terminals, and at least one radio control device that controls the radio devices, the relay device including: a replication necessity determination unit that determines whether or not to replicate a downlink signal received from the radio control device; a signal replicating unit that makes the same number of copies of a downlink signal as the number of destination radio devices only when the replication necessity determination unit determines that the downlink signal is to be replicated; and a downlink signal assignment unit that transfers a downlink signal that has been determined by the replication necessity determination unit as a signal that is not to be replicated, and downlink signals replicated by the signal replicating unit, to the radio devices respectively corresponding thereto.
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公开(公告)号：US20220007151A1
公开(公告)日：2022-01-06
申请号：US17291259
申请日：2019-10-25
Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
Inventor： Naotaka SHIBATA , Hirofumi YAMAMOTO , Keita TAKAHASHI , Noriyuki OTA , Jun TERADA
Abstract: A relay device including: an information storage unit that stores conversion-target header information; a downlink signal dividing unit that divides a downlink signal received from the radio control device into a header and a payload; a signal replicating unit that makes the same number of copies of the payload of the downlink signal as the number of the plurality of destination radio devices; a downlink signal header information conversion unit that performs conversion on the header of the downlink signal for each destination radio device based on the header information stored in the information storage unit; and a signal addition assignment unit that adds the header converted by the downlink signal header information conversion unit to each of the payloads of the downlink signal replicated by the signal replicating unit, and transfers the payloads to the radio devices respectively corresponding thereto.
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公开(公告)号：US20230319595A1
公开(公告)日：2023-10-05
申请号：US18022637
申请日：2020-08-27
Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
Inventor： Hirofumi YAMAMOTO , Keita TAKAHASHI , Hiroko NOMURA
IPC: H04W24/02
Abstract: A slave station system 2 includes: a first shared slave station device 10 connected to a plurality of master station devices including at least a first master station device 3a and a second master station device 3b different from the first master station device 3a, and a second shared slave station device 20 connected to the first shared slave station device 10. The first shared slave station device 10 is equipped with a first individual function unit 11a corresponding to the first master station device 3a and a second individual function unit 11b corresponding to the second master station device 3b. The second shared slave station device 20 is equipped with a common function unit 21 connected to the first individual function unit 11a and the second individual function unit 11b and functioning regardless of the types of the plurality of master station devices.
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公开(公告)号：US20230246717A1
公开(公告)日：2023-08-03
申请号：US18011280
申请日：2020-06-24
Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
Inventor： Hirofumi YAMAMOTO , Hirotaka NAKAMURA
IPC: H04B10/80
CPC classification number: H04B10/806
Abstract: An optical communication system 1 includes an OLT 100 and an ONU 200. The ONU 200 includes a local power supply reception unit 202 capable of receiving power from an external power supply 300, a station-side power supply reception unit 204 connected to a station-side power supply 110 controlled by the OLT 100, via a power supply cable 120, and a power feeding switching unit 205 capable of selectively switching a state of the ONU 200 between a first state in which power feeding is performed by the local power supply reception unit 202 and a second state in which power feeding is performed by the station-side power supply reception unit 204. Upon an amount of power fed by the local power supply reception unit 202 falling below a prescribed amount in the first state, the ONU 200 transmits a power transmission request signal to the OLT 100 and switches from the first state from the second state via the power feeding switching unit 205. Upon reception of the power transmission request signal, the OLT 100 makes the station-side power supply 110 perform power transmission to a second power reception unit of the ONU 200.
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公开(公告)号：US20220201536A1
公开(公告)日：2022-06-23
申请号：US17603464
申请日：2020-04-02
Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
Inventor： Tatsuya FUKUI , Naotaka SHIBATA , Keita TAKAHASHI , Hideaki KIMURA , Noriyuki OTA , Hirofumi YAMAMOTO , Jun TERADA
IPC: H04W28/02
Abstract: An object is to provide a communication system, a communication apparatus, and a terminal apparatus capable of integrating communication paths of both of mobile access and fixed access while addition of a new function to a mobile network is reduced.
In a communication system 100 according to the present invention, a communication path of one mobile bearer between a base station master station apparatus 300 and a user gateway 600 includes a split bearer configuration including a mobile access communication path being connected from the base station master station apparatus 300 to the user gateway 600 via a mobile access slave station apparatus 400 and a non-mobile access communication path being connected from the base station master station apparatus 300 to the user gateway 600 via a non-mobile access slave station apparatus 500.
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