WO2019001442A1 - Procédé de transmission par fibres point a multipoint et dispositif associé - Google Patents

Procédé de transmission par fibres point a multipoint et dispositif associé Download PDF

Info

Publication number
WO2019001442A1
WO2019001442A1 PCT/CN2018/092975 CN2018092975W WO2019001442A1 WO 2019001442 A1 WO2019001442 A1 WO 2019001442A1 CN 2018092975 W CN2018092975 W CN 2018092975W WO 2019001442 A1 WO2019001442 A1 WO 2019001442A1
Authority
WO
WIPO (PCT)
Prior art keywords
rec
res
identifier
uplink signal
target
Prior art date
Application number
PCT/CN2018/092975
Other languages
English (en)
Chinese (zh)
Inventor
孙晓
齐江
王自强
Original Assignee
华为技术有限公司
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 华为技术有限公司 filed Critical 华为技术有限公司
Publication of WO2019001442A1 publication Critical patent/WO2019001442A1/fr

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
    • 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
    • H04B10/03—Arrangements for fault recovery
    • H04B10/032—Arrangements for fault recovery using working and protection systems
    • 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
    • H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
    • H04B10/075—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal
    • H04B10/079—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal using measurements of the data signal
    • H04B10/0791—Fault location on the transmission path
    • 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
    • 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
    • H04B10/27—Arrangements for networking
    • H04B10/272—Star-type networks or tree-type networks
    • 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
    • H04B10/27—Arrangements for networking
    • H04B10/275—Ring-type networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446—Resources in time domain, e.g. slots or frames

Definitions

  • the present application relates to the field of communications technologies, and in particular, to a point-to-multipoint optical fiber transmission method and related equipment.
  • the baseband unit (BBU) and the RRU will form a front-end (Fronthaul) network through fiber-optic connections.
  • the pre-transmission network supports long distances of more than 10 kilometers.
  • Optical fiber transmission As the Cloud Radio Access Network (CloudRAN) is commercially available, the BBU will also form a pre-transmission network between the BBU and the RRU.
  • the optical fiber transmission interface standards between the various standard wireless networks BBU and RRU are mainly the Common Public Radio Interface (CPRI) standard, and other standards similar to the CPRI standard exist.
  • CPRI Common Public Radio Interface
  • Figure 1 includes three network topologies: point-to-point link, link link, and ring link. .
  • the above network topology has the following disadvantages: in the link chain, if the RE fails, all the downstream RE services are interrupted; the link and the ring link require more fibers, especially the ring link. The fiber is doubled; the number of stages that the REC can cascade is affected by the clock skew, and the number of REs that can be cascaded is limited.
  • the present application provides a point-to-multipoint optical fiber transmission method and related equipment.
  • the transmission between each RE and the REC is independent of each other.
  • the tree-shaped optical fiber link saves the optical fiber, and the REC supports more RE numbers.
  • the first aspect of the present application provides a point-to-multipoint optical fiber transmission method, which may include: an REC and at least two REs form a tree-shaped optical fiber link, and the REC configures an identity (ID) for each RE, For example, the target identifier is configured for the target RE, and each RE is separately notified of the identifier assigned to it, so that each RE acquires its own identifier. Then, the REC sends at least two downlink signals to the at least two REs, where the at least two downlink signals include a target downlink signal, and the target downlink signal carries a target identifier.
  • ID identity
  • the target REs in the at least two REs After receiving the at least two downlink signals, the target REs in the at least two REs determine a target downlink signal from the target identifiers in the at least two downlink signals, so that the target RE receives the target downlink signal that belongs to itself. It can be seen that the transmission between each RE and REC is independent of each other.
  • the tree-shaped fiber link saves the fiber, and the REC supports the connection of more REs.
  • the foregoing RECs respectively send the at least two downlink signals to the at least two REs, where the REC sends the at least two downlink signals to the at least two REs by using the optical passive beam splitter.
  • the tree-shaped fiber link is more in line with the actual RE physical network topology, and the fiber is saved compared to the chain link and the ring link, especially the backbone fiber. .
  • the method further includes: in the point-to-multipoint optical fiber transmission mechanism, the REC needs to separately configure an uplink time slot for the at least two REs, so that each RE determines an uplink signal according to the uplink time slot configured for the RE. The moment of sending. It can be seen that the transmission timing of the uplink signal of the RE needs to be accurately controlled by the REC to avoid collision of uplink transmission between multiple REs, so that different REs need to insert the time slot required by the REC before transmitting the uplink signal.
  • the method further includes: the REC needs to sample the uplink signal by using a local clock to complete synchronization of the clocks of the REs with the local clock. It can be seen that, in order to ensure that the clocks of the REs are synchronized with the local clock, for example, the clock synchronization is completed within the uplink burst overhead time, the REC needs to resample the uplink signal of the RE through the REC local clock.
  • the method may further include: when the REC detects that there is a RE open station, re-ranging the RE that has the open station; or, when detecting the presence of the RE fault, performing the faulty RE. Re-ranging. It can be seen that only when the RE starts or fails, the distance measurement needs to be performed. If the ranging mechanism needs to be faulty or the network management triggers, the ranging window is opened, and the impact of the ranging on the normal RE service is reduced, and when the faulty RE is re-ranging, Since the original ranging information is stored, the ranging window can be shortened without affecting the operation of other REs.
  • the downlink signal includes a superframe
  • the frame structure of the superframe includes an identifier field and a physical layer control information field.
  • the second aspect of the present application further provides a point-to-multipoint optical fiber transmission method, which may include:
  • the REC and the at least two REs form a tree-shaped fiber link, and any one of the at least two REs determines a transmission time of the uplink signal according to the acquired uplink time slot, and the frame structure of the uplink signal includes an identifier field and a physical layer
  • the overhead field is sent; the RE sends an uplink signal to the REC according to the sending time of the uplink signal. It can be seen that after determining the sending time of the uplink signal, the RE sends the uplink signal according to the sending time to avoid collision or collision of the uplink signal during the transmission.
  • the physical layer control information field is also included in the frame structure of the uplink signal.
  • the third aspect of the present application provides an REC, where the REC and the at least two REs form a tree-shaped fiber link, and the REC can implement the functions of the method provided by the foregoing first aspect or any optional implementation of the first aspect.
  • the function can be implemented by software, and the software includes modules corresponding to the above functions, and each module is used to perform corresponding functions.
  • the fourth aspect of the present application provides an RE, where at least two REs and RECs form a tree-shaped fiber link, and the RE can implement the functions of the method provided by the foregoing second aspect or any alternative implementation of the second aspect,
  • This function can be implemented by software, and the software includes modules corresponding to the above functions, and each module is used to perform corresponding functions.
  • a fifth aspect of the present application provides a computer storage medium for storing computer software instructions for use in the REC described above, including a program designed to perform the functions implemented by the RECs in the various aspects described above.
  • a sixth aspect of the present application provides a computer storage medium for storing computer software instructions for use in the RE described above, including a program designed to perform the functions implemented by the REs in the various aspects described above.
  • the embodiment of the present invention has the following advantages: the REC is the target RE configuration identifier; the REC sends at least two downlink signals to the at least two REs, and the target downlink signal in the at least two downlink signals carries the identifier. Therefore, the target RE in the at least two REs receives the target downlink signal according to the identifier, and the REC and the at least two REs form a tree-shaped fiber link. Therefore, the transmission between each RE and REC is independent of each other.
  • the tree-shaped fiber link saves the fiber, and the REC supports the connection of more REs.
  • FIG. 1 is a schematic diagram of a network topology between three existing RECs and REs;
  • FIG. 2 is a schematic diagram of an existing PON network architecture
  • FIG. 3 is a flowchart of a point-to-multipoint optical fiber transmission method provided by the present application.
  • FIG. 4 is a schematic diagram of a REC provided by the present application connected to at least two REs through a passive optical power beam splitter;
  • FIG. 5 is a schematic structural diagram of a downlink signal frame according to the present application.
  • FIG. 6 is a flowchart of another point-to-multipoint optical fiber transmission method provided by the present application.
  • FIG. 7 is a schematic structural diagram of a frame of an uplink signal provided by the present application.
  • FIG. 8 is a structural diagram of a radio control device REC provided by the present application.
  • FIG. 9 is a structural diagram of another radio control device REC provided by the present application.
  • FIG. 10 is a structural diagram of another radio control device REC provided by the present application.
  • FIG 11 is a structural diagram of another radio control device REC provided by the present application.
  • FIG 12 is a structural diagram of a radio device RE provided by the present application.
  • FIG. 13 is a structural diagram of another radio device RE provided by the present application.
  • the present application provides a point-to-multipoint optical fiber transmission method and related equipment.
  • the transmission between each RE and the REC is independent of each other.
  • the tree-shaped optical fiber link saves the optical fiber, and the REC supports more RE numbers.
  • the present application draws on a fixed broadband network (Passive optical network (PON) network architecture, and introduces a passive optical power beam splitter (also called an optical passive beam splitter) in the BBU-RRU transmission, through passive optical power.
  • the beam splitter, REC is connected to multiple REs at the same time, and is connected by a fiber between the REC and the passive optical power splitter, and multiple REs are connected at the proximal end of the RE through a passive optical power beam splitter.
  • a passive optical power splitter is a passive optical fiber device that is inexpensive and has the same reliability as a fiber link.
  • an Optical Line Terminal (OLT) and an Optical Network Termination (ONT) are implemented by Time Division Multiple (TDM).
  • Communication that is, the downlink OLT broadcasts all signals, and each OLT receives its own information according to its own identity; the uplink is performed by Time Division Multiple Access (TDMA), and each ONT is under the control of the OLT, at the time of allocation. Send signals in the gap to avoid collisions between signals sent by each ONT.
  • TDMA Time Division Multiple Access
  • the bandwidth of the PON network only supports 10Gb/s, the bandwidth requirement for mobile preamble is much higher than this. At least the rate of 25Gb/s and the split ratio of 1:8 are required to meet the point-to-multipoint between BBU-RRUs.
  • the current PON is for data services or TDM services, such as the Ethernet/E1 transmission interface, and the CPRI interface is essentially different from the existing Ethernet/E1 interface, and cannot be directly utilized from the delay variation, clock synchronization accuracy, and transmission mode parameters.
  • the existing PON network carrying the data service or the TDM service directly performs CPRI transmission to implement communication between the REC and the RE. This leads to a point-to-multipoint optical fiber transmission scheme proposed by the present application.
  • an embodiment of the point-to-multipoint optical fiber transmission method in the present application includes:
  • the radio control device REC configures an identifier for the target radio device RE.
  • the REC and the at least two REs form a tree-shaped fiber link, and the REC configures an identifier for each RE, such as a target RE configuration identifier.
  • the REC may choose to separately notify each RE of the identifier assigned to it, so that each RE obtains its own identity, and paves the way for receiving the downlink signal according to the identifier.
  • the REC sends at least two downlink signals to the at least two REs, where the target downlink signal of the at least two downlink signals carries an identifier, so that the target RE of the at least two REs receives the target downlink signal according to the identifier, and the REC and the The at least two REs described above constitute a tree-shaped fiber link.
  • the REC after the REC configures the identifier for the target RE, the REC sends at least two downlink signals to the at least two REs connected thereto, and one of the at least two downlink signals carries the identifier, so that the foregoing
  • the target RE in at least two REs only accepts the target downlink signal belonging to itself according to the identifier.
  • the foregoing REC sending at least two downlink signals to the at least two REs may be:
  • the REC transmits at least two downlink signals to the at least two REs through the optical passive beam splitter.
  • the present application provides a schematic diagram of a REC connected to at least two REs through a passive optical power beam splitter (also referred to as an optical passive beam splitter). See FIG. 4 for details.
  • the tree-shaped fiber link is more in line with the actual RE physical network topology, and the fiber is saved compared to the chain link and the ring link, especially the backbone fiber. .
  • the REC connects three REs, RE1, RE2, and RE3, and the REC assigns the identifier A to the RE1, the REC assigns the identifier B to the RE2, and the REC assigns the identifier C to the RE3.
  • the REC broadcasts the downlink signal a, the downlink signal b, and the downlink signal c.
  • the downlink signal a carries the identifier A
  • the downlink signal b carries the identifier B
  • the downlink signal c carries the identifier C.
  • RE1 receives the downlink signal a according to the identifier A
  • RE2 receives the downlink signal b according to the identifier B
  • the RE3 receives the downlink signal c according to the identifier C.
  • the REC is the target RE configuration identifier; the REC sends at least two downlink signals to the at least two REs, and the target downlink signal in the at least two downlink signals carries the identifier, so that the target REs in the at least two REs are based on The target downlink signal is identified, and the REC and the at least two REs form a tree fiber link. Therefore, the transmission between each RE and REC is independent of each other.
  • the tree-shaped fiber link saves the fiber, and the REC supports the connection of more REs.
  • the method may further include:
  • the REC configures an uplink time slot for each of the at least two REs, so that each RE determines the transmission time of the uplink signal according to the uplink time slot configured for it.
  • the transmission timing of the uplink signal of the RE needs to be accurately controlled by the REC to avoid collision of uplink transmission between multiple REs, so that different REs need to insert the time slot required by the REC before transmitting the uplink signal.
  • the uplink and downlink of the REC and the RE need to ensure strict delay symmetry.
  • the RE needs to insert the time slot required by the REC before transmitting the uplink signal, and the REC should also insert the same time slot before broadcasting the downlink signal.
  • the method may further include:
  • the REC samples the upstream signal through the local clock to complete the synchronization of the clocks of the respective REs with the local clock.
  • the REC needs to resample the uplink signal of the RE through the REC local clock.
  • each RE and REC are physically connected directly, and the REs are independent of each other and have no effect on the clock.
  • the method may further include:
  • the REC When the REC detects that there is a RE open station, it re-ranges the RE that has the open station; or, when it detects the presence of the RE fault, re-ranges the faulty RE.
  • the uplink direction needs to stop the service transmission periodically to provide the RE access network opportunity. Since the RE ranging needs to be performed only when the RE starts or fails, setting the ranging mechanism requires a fault or the network management trigger to open the ranging window, reducing the impact of the ranging on the normal RE service. By storing the original ranging information, the ranging window can be shortened without affecting the operation of other REs.
  • the downlink signal includes a superframe
  • the frame structure of the superframe includes an identifier field and a physical layer control information field.
  • the frame structure of a possible downlink signal provided by the present application can be seen in FIG. 5.
  • the length of the CPRI 10 ms frame is guaranteed to be constant, and several bytes are added in front of each RE on the Hyperframe structure.
  • Overhead where the payload portion contains all Hyperframes belonging to this RE.
  • Overhead includes an identification field and a physical layer control information field.
  • each 10ms frame can be divided into 150 superframes, numbered from 0 to 149, and each superframe contains 256 basic frames, numbered from 0 to 255.
  • the point-to-multipoint CPRI interface in the present application may perform hardware upgrade on an existing CPRI interface.
  • the present application may provide a point-to-multipoint CPRI interface function. It is integrated into a pluggable CPRI optical module and provides a point-to-point hardware interface for the REC and RE. This protects the existing REC and RE. You can upgrade to a point-to-multipoint network only by replacing the CPRI optical module.
  • the fixed bandwidth allocation scheme is adopted on the REC in the present application to meet the requirement, and the required bandwidth is negotiated and determined when the RE accesses the network.
  • FIG. 6 another embodiment of the point-to-multipoint optical fiber transmission method in the present application includes:
  • the radio device RE determines, according to the acquired uplink time slot, a sending time of the uplink signal, where the frame structure of the uplink signal includes an identifier field and a physical layer burst overhead field.
  • the RE determines the transmission timing of the uplink signal according to the acquired uplink time slot.
  • the frame structure of the uplink signal includes an identity field and a physical layer burst overhead field. It can be understood that the frame structure of the uplink signal is similar to the frame structure of the foregoing downlink signal, and the only difference is that in addition to the identifier in the frame structure of each uplink signal, a physical layer burst overhead field of less than 8 bytes is added, and the physical layer The burst overhead field is used for receiving the burst receiver recovery threshold and implementing synchronization.
  • the frame structure of the uplink signal may further include a physical layer control information field, and the content of the physical layer control information field in the frame structure of the uplink signal is The content of the physical layer control information field in the frame structure of the downlink signal is different.
  • the frame structure of a possible uplink signal provided by the present application can be seen in FIG. 7.
  • the RE sends an uplink signal to the radio control device REC according to the sending moment, and the REC and the at least two REs form a tree-shaped fiber link.
  • the RE after determining the sending time of the uplink signal, the RE sends the uplink signal according to the sending time to avoid collision or collision of the uplink signal during the transmission.
  • the point-to-multipoint optical fiber transmission method in the present application is described above by using an embodiment.
  • the radio control device REC in the present application is introduced by an embodiment, and the REC and the at least two radio devices RE form a tree-shaped optical fiber link.
  • Figure 8 an embodiment of the radio control device REC in the present application includes:
  • the configuration module 301 is configured to configure an identifier for the target RE.
  • the sending module 302 is configured to send at least two downlink signals to the at least two REs, where the target downlink signal of the at least two downlink signals carries an identifier, so that the target RE of the at least two REs receives the target downlink signal according to the identifier. .
  • the configuration module 301 configures an identifier for the target RE; the sending module 302 sends at least two downlink signals to the at least two REs, and the target downlink signal of the at least two downlink signals carries the identifier, so that at least two REs are included.
  • the target RE receives the target downlink signal according to the identifier, and the REC and the at least two REs form a tree-shaped fiber link. Therefore, the transmission between each RE and REC is independent of each other.
  • the tree-shaped fiber link saves the fiber, and the REC supports the connection of more REs.
  • the sending module 302 is specifically configured to separately send at least two downlink signals to the at least two REs through the optical passive beam splitter.
  • the tree-shaped fiber link is more in line with the actual RE physical network topology, and the fiber is saved compared to the chain link and the ring link, especially the backbone fiber. .
  • the configuration module 301 is further configured to separately configure an uplink time slot for the at least two REs, so that each RE determines a transmission time of the uplink signal according to the uplink time slot configured for the RE.
  • the sending time of the uplink signal of the RE needs to be accurately controlled by the configuration module 301 to avoid collision of uplink transmission between multiple REs, so that different REs need to insert the time slot required by the configuration module 301 before transmitting the uplink signal.
  • the REC further includes:
  • the sampling module 401 is configured to sample the uplink signal by using a local clock to complete synchronization of the clocks of the REs with the local clock.
  • the sampling module 401 needs to resample the uplink signals of the REs through the REC local clock.
  • the REC further includes:
  • the ranging module 501 is configured to re-range the RE that has the open station when detecting that there is a RE open station;
  • the ranging module 501 is further configured to re-range the faulty RE when detecting that there is an RE fault.
  • the uplink direction needs to stop the service transmission periodically to provide the RE access network opportunity. Since the RE ranging needs to be performed only when the RE starts or fails, setting the ranging mechanism requires a fault or the network management trigger to open the ranging window, reducing the impact of the ranging on the normal RE service. By storing the original ranging information, the ranging window can be shortened without affecting the operation of other REs.
  • the downlink signal includes a superframe
  • the frame structure of the superframe includes an identifier field and a physical layer control information field.
  • an embodiment of the REC in the present application includes: a processor 601, Transmitter 602 and memory 603.
  • the RECs referred to in this application may have more or fewer components than those shown in FIG. 11, may combine two or more components, or may have different component configurations or settings, each component may include one or more A combination of hardware, software, or a combination of hardware and software, such as signal processing and/or application specific integrated circuits.
  • the processor 601 is configured to perform the following operations:
  • the transmitter 602 is configured to perform the following operations:
  • the memory 603 is used to store instructions required by the processor 601 to perform corresponding operations.
  • the processor 601 configures an identifier for the target RE; the transmitter 602 sends at least two downlink signals to the at least two REs, and the target downlink signal of the at least two downlink signals carries the identifier, so that at least two REs are included.
  • the target RE receives the target downlink signal according to the identifier, and the REC and the at least two REs form a tree-shaped fiber link. Therefore, the transmission between each RE and REC is independent of each other.
  • the tree-shaped fiber link saves the fiber, and the REC supports the connection of more REs.
  • the transmitter 602 is also used to perform the following operations:
  • At least two downlink signals are respectively transmitted to the at least two REs through the optical passive beam splitter.
  • the processor 601 is further configured to perform the following operations:
  • the uplink time slots are respectively configured for at least two REs, so that each RE determines the transmission time of the uplink signal according to the uplink time slot configured for it.
  • the processor 601 is further configured to perform the following operations:
  • the upstream signal is sampled by the local clock to complete the synchronization of the clocks of the respective REs with the local clock.
  • the processor 601 is further configured to perform the following operations:
  • the faulty RE is re-ranged.
  • an embodiment of the radio device RE in the present application includes:
  • the determining module 701 is configured to determine, according to the acquired uplink time slot, a sending time of the uplink signal, where the frame structure of the uplink signal includes an identifier field and a physical layer burst overhead field;
  • the sending module 702 is configured to send an uplink signal to the REC according to the sending moment.
  • the determining module 701 after determining the sending time of the uplink signal, sends the uplink signal according to the sending time to avoid collision or collision of the uplink signal during the transmission.
  • the physical layer control information field is also included in the frame structure of the uplink signal.
  • an embodiment of the RE in the present application includes: a processor 801, Transmitter 802 and memory 803.
  • the REs referred to in this application may have more or fewer components than those shown in FIG. 13, may combine two or more components, or may have different component configurations or settings, each component may include one or more A combination of hardware, software, or a combination of hardware and software, such as signal processing and/or application specific integrated circuits.
  • the processor 801 is configured to perform the following operations:
  • the transmitter 802 is configured to perform the following operations:
  • the uplink signal is sent to the REC according to the transmission time.
  • the memory 803 is used to store instructions required by the processor 801 to perform corresponding operations.
  • the processor 802 after determining the sending time of the uplink signal, sends the uplink signal according to the sending time to avoid collision or collision of the uplink signal during the transmission.
  • the computer program product includes one or more computer instructions.
  • the computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable device.
  • the computer instructions can be stored in a storage medium or transferred from one storage medium to another.
  • the computer instructions can be routed from one website site, computer, server or data center to another website site by wire (eg, coaxial cable, twisted pair, fiber optic) or wireless (eg, infrared, wireless, microwave, etc.), Transfer from a computer, server, or data center.
  • the storage medium may be any medium that the computer can store or a data storage device that includes one or more media integrated servers, data centers, and the like.
  • the medium may be a magnetic medium, such as a floppy disk, a hard disk, a magnetic tape, an optical medium such as an optical disk, or a semiconductor medium such as a solid state disk (SSD).
  • SSD solid state disk
  • the disclosed system, apparatus, and method may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network devices. Some or all of the units may be selected according to actual needs to achieve the objectives of the embodiments of the present application.
  • each device Embodiments may be understood with reference to relevant portions of the related method embodiments.
  • the device structure diagrams given in the various device embodiments of the present application show only a simplified design of the corresponding device.
  • the device may include any number of communication modules, processors, memories, etc., to implement the functions or operations performed by the device in the device embodiments of the present application, and all devices that can implement the present application are in the present application. Within the scope of protection of the application.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Computing Systems (AREA)
  • Small-Scale Networks (AREA)

Abstract

La présente invention concerne un procédé de transmission par fibres point à multipoint et un dispositif associé. Les transmissions entre divers RE et un REC sont indépendantes les unes des autres; des fibres sont sauvegardées à l'aide d'une liaison de fibres en forme d'arbre; et le REC prend en charge la connexion pour une plus grande quantité de RE. Le procédé de la présente invention comprend les étapes suivantes : un équipement de commande radio (REC) configure un identifiant pour un équipement radio cible (RE); et le REC envoie respectivement au moins deux signaux de liaison descendante à au moins deux RE, un signal de liaison descendante cible desdits au moins deux signaux de liaison descendante transportant l'identifiant de sorte que le RE cible desdits au moins deux RE reçoit le signal de liaison descendante cible en fonction de l'identifiant, le REC et lesdits au moins deux RE formant une liaison de fibres en forme d'arbre.
PCT/CN2018/092975 2017-06-30 2018-06-27 Procédé de transmission par fibres point a multipoint et dispositif associé WO2019001442A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201710526844.3 2017-06-30
CN201710526844.3A CN107493137A (zh) 2017-06-30 2017-06-30 一种点对多点光纤传输方法及相关设备

Publications (1)

Publication Number Publication Date
WO2019001442A1 true WO2019001442A1 (fr) 2019-01-03

Family

ID=60644397

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2018/092975 WO2019001442A1 (fr) 2017-06-30 2018-06-27 Procédé de transmission par fibres point a multipoint et dispositif associé

Country Status (2)

Country Link
CN (1) CN107493137A (fr)
WO (1) WO2019001442A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107493137A (zh) * 2017-06-30 2017-12-19 上海华为技术有限公司 一种点对多点光纤传输方法及相关设备
CN113213099A (zh) * 2021-05-12 2021-08-06 武汉长江航运规划设计院有限公司 分布式连续型带式输送机控制系统及设备
CN113765615B (zh) * 2021-11-10 2022-02-11 深圳凡维泰科技服务有限公司 Cpri接口的时分通信系统

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101860394A (zh) * 2010-05-25 2010-10-13 中兴通讯股份有限公司 一种基于cpri的多制式iq数据映射方法和装置
CN103326783A (zh) * 2012-03-23 2013-09-25 华为技术有限公司 一种信号传输方法和相关设备及信号传输系统
US20150163684A1 (en) * 2013-12-10 2015-06-11 Fujitsu Limited Radio access system and radio control apparatus
US20160337043A1 (en) * 2015-05-11 2016-11-17 Fujitsu Limited Radio communication device and frequency error measurement method
CN107493137A (zh) * 2017-06-30 2017-12-19 上海华为技术有限公司 一种点对多点光纤传输方法及相关设备

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101860394A (zh) * 2010-05-25 2010-10-13 中兴通讯股份有限公司 一种基于cpri的多制式iq数据映射方法和装置
CN103326783A (zh) * 2012-03-23 2013-09-25 华为技术有限公司 一种信号传输方法和相关设备及信号传输系统
US20150163684A1 (en) * 2013-12-10 2015-06-11 Fujitsu Limited Radio access system and radio control apparatus
US20160337043A1 (en) * 2015-05-11 2016-11-17 Fujitsu Limited Radio communication device and frequency error measurement method
CN107493137A (zh) * 2017-06-30 2017-12-19 上海华为技术有限公司 一种点对多点光纤传输方法及相关设备

Also Published As

Publication number Publication date
CN107493137A (zh) 2017-12-19

Similar Documents

Publication Publication Date Title
EP3307015B1 (fr) Procédé et dispositif servant à une conversion de protocole
US9602212B2 (en) Optical communication system, optical communication method, higher-network apparatus, and optical line terminal
US8554075B2 (en) Communication system, subscriber accommodating apparatus and communication method
WO2016173265A1 (fr) Procédé et système de synchronisation temporelle, et dispositif de réseau
JP2020505848A (ja) 共通公衆無線インターフェース（ｃｐｒｉ）パッシブ光ネットワーク（ｐｏｎ）における同期誤差低減
WO2019001442A1 (fr) Procédé de transmission par fibres point a multipoint et dispositif associé
US9961563B2 (en) Small cell base station system, and related devices and data processing methods
US11381335B2 (en) Method and apparatus for spectrum defragmentation, device, and system
WO2011140945A1 (fr) Procédé et dispositif de transmission de données de service
US11824963B2 (en) Packet processing method and device
US9615153B2 (en) System and method for applying an extended multipoint protocol to wireless access systems
EP3295765A1 (fr) Systèmes et procédés de transport d'informations d'interface internes de station de base radio (rbs) sur un réseau à commutation par paquets
WO2020024736A1 (fr) Procédé, dispositif et système de configuration d'informations de service
US11212068B1 (en) Carrying a timestamp in radio over ethernet
EP3139699B1 (fr) Procédé et dispositif de transmission de données, et système de réseau
US11425474B2 (en) Ranging method and communication method for optical network, OLT, ONU, and optical network system
CN111698708B (zh) 一种在传送系统中业务类型适配的方法和装置
US9137195B2 (en) Method, network device and user equipment for switching media access control address
US11223437B1 (en) Differential clock recovery using a global reference time
EP4200997A1 (fr) Transport d'un horodatage dans une radio ethernet
JP6231438B2 (ja) 中継伝送システムおよび中継伝送方法
WO2018170836A1 (fr) Procédé de configuration de communication, terminaison de ligne optique, et unité de réseau optique
US20130315238A1 (en) Method and Apparatus for Extending Multipoint Control Protocols to Mixed Media Access Systems
CN103326783A (zh) 一种信号传输方法和相关设备及信号传输系统
WO2023201912A1 (fr) Procédé et appareil d'enregistrement de dispositif

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: 18823694

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: 18823694

Country of ref document: EP

Kind code of ref document: A1