Fronthaul control method and system

Abstract

The present invention discloses a forward transmission control method and system. The method comprises: an active device of a forward transmission system sends a first IP message carrying control reporting information to a first edge device; the first edge device sends the first IP message to a second edge device based on a configured VLAN tunnel; the second edge device sends the first IP message to a data communication network DCN, and the DCN sends the first IP message to a control system based on IP routing. The embodiment of the present invention realizes the transmission of control signaling between multiple forward transmission systems and a centrally deployed control system, which is conducive to the centralized control of the forward transmission system.

Description

Technical Field

[0001] The present invention relates to the field of network transmission, and in particular to a forward transmission control method and system. Background Art

[0002] Compared with 4G (4th generation mobile communication) technology, 5G (5th generation mobile communication) network has significantly improved in terms of throughput, latency, number of connections, etc., while also posing new challenges to the fronthaul network, such as dense fiber deployment, higher transmission bandwidth, lower latency and many other new requirements. For example, Figure 1 As shown in FIG, the 5G fronthaul semi-active system generally includes: active equipment, optical modules, passive combiners and splitters, optical fibers, etc.; wherein the active equipment is arranged on the DU+CU (distributed unit and integrated unit, corresponding to the baseband processing unit of 4G) side, for example, Figure 1 The DU side WDM (Wavelength Division Multiplexing) master device shown; the optical module is deployed on the wireless device AAU (Active Antenna Unit) side, for example, Figure 1 The AAU side color optical module is shown; the AAU side color optical module is connected to the DU side WDM main device via the AAU side combiner / demultiplexer and optical fiber.

[0003] Usually, multiple fronthaul systems need to be deployed in a province or city, and a control system is needed to centrally control the fronthaul systems in the province or city. The control system of the fronthaul system is usually also centrally deployed in the province or city. However, there is currently no unified standard in the industry for how the fronthaul system interacts with the centrally deployed control system.

[0004] In related technologies, operators often establish a dedicated DCN (Data communication network) network to carry the control signaling of various professional networks. However, dedicated DCN network nodes are limited and are usually deployed in some core computer rooms of metropolitan areas or provincial trunk lines. It is impossible to ensure that DCN nodes are deployed in computer rooms of all sites. The fronthaul semi-active system is usually deployed in the metropolitan edge node computer room together with DU / CU and other equipment. These computer rooms usually do not have DCN nodes deployed, which makes it impossible for the fronthaul semi-active system to directly access the DCN network, making it difficult to achieve centralized control. Summary of the invention

[0005] In view of this, an embodiment of the present invention provides a fronthaul control method and system, which aims to realize the transmission of control signaling between multiple fronthaul systems and a centrally deployed control system.

[0006] The technical solution of the embodiment of the present invention is achieved as follows:

[0007] An embodiment of the present invention provides a forward transmission control method, including:

[0008] The active device of the fronthaul system sends a first IP (Internet Protocol) message carrying the control reporting information to the first edge device;

[0009] The first edge device sends the first IP message to the second edge device based on the configured VLAN (Virtual Local Area Network) tunnel;

[0010] The second edge device sends the first IP message to a DCN (Data communication network), and the DCN sends the first IP message to a management and control system based on IP routing.

[0011] In the above solution, before the active device of the fronthaul system sends the first IP message carrying the control reporting information to the first edge device, the method further includes:

[0012] The active device obtains first information of itself, and / or obtains second information of an optical module of a fronthaul system based on the wavelength top tuning information;

[0013] Based on a preset encapsulation protocol, information including the first information and / or the second information is encapsulated into the first IP message.

[0014] In the above solution, the first edge device sends the first IP message to the second edge device based on the configured VLAN tunnel, including:

[0015] The first edge device adds a first VLAN identifier indicating the address of the second edge device and a second VLAN identifier indicating the address of the aggregation device to the received first IP message;

[0016] The first edge device sends the first IP message to the aggregation device based on the second VLAN identifier;

[0017] The aggregation device sends the first IP message to the second edge device based on the first VLAN identifier.

[0018] In the above solution, the DCN is a metropolitan area DCN deployed in a metropolitan area network or a provincial backbone DCN deployed in a provincial backbone network.

[0019] The embodiment of the present invention also provides a forward transmission control method, including:

[0020] The management and control system sends the second IP message carrying the management and control downlink instruction to the second edge device via the DCN;

[0021] The second edge device sends the second IP message to the first edge device based on the configured VLAN tunnel;

[0022] The first edge device sends the second IP message to an active device of the fronthaul system.

[0023] In the above scheme, the method further comprises:

[0024] The active device converts the instruction for operating the optical module of the fronthaul system carried in the second IP message into wavelength adjustment information;

[0025] The active device sends the wavelength adjustment information to the optical module.

[0026] In the above solution, the second edge device sends the second IP message to the first edge device based on the configured VLAN tunnel, including:

[0027] The second edge device adds a third VLAN identifier indicating the address of the first edge device and a fourth VLAN identifier indicating the address of the aggregation device to the received second IP message;

[0028] The second edge device sends the second IP message to the aggregation device based on the fourth VLAN identifier;

[0029] The aggregation device sends the second IP message to the first edge device based on the third VLAN identifier.

[0030] In the above solution, the DCN is a metropolitan area DCN deployed in a metropolitan area network or a provincial backbone DCN deployed in a provincial backbone network.

[0031] The embodiment of the present invention further provides a system for fronthaul control, including:

[0032] A forwarding system configured to send a first IP message carrying control reporting information to a first edge device;

[0033] A first edge device, configured to send the first IP message to a second edge device based on a configured VLAN tunnel;

[0034] The second edge device is configured to send the first IP message to the DCN, and the DCN sends the first IP message to the management and control system based on IP routing.

[0035] The embodiment of the present invention further provides a system for fronthaul control, including:

[0036] The control system is configured to send the second IP message carrying the control downlink instruction to the second edge device via the DCN;

[0037] A second edge device, configured to send the second IP message to the first edge device based on a configured VLAN tunnel;

[0038] The first edge device is configured to send the second IP message to an active device of a fronthaul system.

[0039] The technical solution provided by the embodiment of the present invention is to set a first edge device and a second edge device between the fronthaul system and the DCN where the control system is located; the active device of the fronthaul system sends the first IP message carrying the control reporting information to the first edge device; the first edge device sends the first IP message to the second edge device based on the configured VLAN tunnel; the second edge device sends the first IP message to the DCN, and the DCN sends the first IP message to the control system based on IP routing; or, the control system sends the second IP message carrying the control downlink instruction to the second edge device via the DCN; the second edge device sends the second IP message to the first edge device based on the configured VLAN tunnel; the first edge device sends the second IP message to the active device of the fronthaul system; the transmission of control signaling between multiple fronthaul systems and the centrally deployed control system is realized, which is conducive to centralized control of the fronthaul system. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 It is a structural diagram of a 5G fronthaul semi-active system in the related art;

[0041] Figure 2 This is a flow chart of a fronthaul control method according to an embodiment of the present invention;

[0042] Figure 3 The figure is a schematic diagram of the principle of interaction between the optical module and the active device of the fronthaul system based on top modulation OAM in one embodiment of the present invention;

[0043] Figure 4 A schematic diagram of the working principle of active equipment of a fronthaul system in one embodiment of the present invention;

[0044] Figure 5 This is a structural diagram of a 5G fronthaul control system deployed in a metropolitan DCN in an embodiment of the present invention;

[0045] Figure 6 It is a structural diagram of a 5G fronthaul control system arranged in a provincial trunk DCN in one embodiment of the present invention;

[0046] Figure 7 It is a schematic diagram of the principle of control signaling interaction when the fronthaul control system is deployed in the metropolitan DCN in one embodiment of the present invention;

[0047] Figure 8 It is a schematic diagram of the principle of control signaling interaction when the fronthaul control system is deployed in the provincial trunk DCN in one embodiment of the present invention;

[0048] Fig. 9 The schematic diagram is a principle diagram of the control signaling interaction between multiple fronthaul active devices and a control system deployed in a metropolitan DCN in one embodiment of the present invention;

[0049] Fig.10 It is a schematic diagram of the principle of control signaling interaction between a metropolitan edge node and a control system arranged in a provincial DCN in one embodiment of the present invention;

[0050] Fig.11 This is a flow chart of a forward transmission control method according to another embodiment of the present invention;

[0051] Fig.12 This is an application schematic diagram of control signaling interaction between a control system and a remote optical module in one embodiment of the present invention;

[0052] Fig.13 Schematic diagram of the structure of a system for forward transmission control in one embodiment of the present invention. DETAILED DESCRIPTION

[0053] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

[0054] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0055] In related technologies, the fronthaul semi-active system is usually deployed in the metropolitan edge node room together with DU / CU and other equipment. These rooms usually do not have DCN nodes deployed, which makes it impossible for the fronthaul semi-active system to directly access the DCN network and difficult to achieve centralized management and control.

[0056] Based on this, in various embodiments of the present invention, a first edge device and a second edge device are set between the fronthaul system and the DCN where the control system is located; the active device of the fronthaul system sends the first IP message carrying the control reporting information to the first edge device; the first edge device sends the first IP message to the second edge device based on the configured VLAN tunnel; the second edge device sends the first IP message to the DCN, and the DCN sends the first IP message to the control system based on IP routing; or, the control system sends the second IP message carrying the control downlink instruction to the second edge device via the DCN; the second edge device sends the second IP message to the first edge device based on the configured VLAN tunnel; the first edge device sends the second IP message to the active device of the fronthaul system; the transmission of control signaling between multiple fronthaul systems and the centrally deployed control system is realized, which is conducive to the centralized control of the fronthaul system. It can be understood that the control signaling in the embodiment of the present invention includes: the control reporting information uploaded by the active device to the control system and the control downlink instruction sent by the control system to the active device.

[0057] The following describes the fronthaul control method according to an embodiment of the present invention with respect to control reporting information and control downlink instructions respectively.

[0058] like Figure 2 As shown, an embodiment of the present invention provides a fronthaul control method, including:

[0059] Step 201, the active device of the fronthaul system sends a first IP message carrying control reporting information to a first edge device;

[0060] Step 202: The first edge device sends the first IP message to the second edge device based on the configured VLAN tunnel;

[0061] Step 203: The second edge device sends the first IP message to the DCN, and the DCN sends the first IP message to the management and control system based on IP routing.

[0062] Here, if Figure 3 As shown, the fronthaul system includes: an active device and an optical module located at the remote end, and the optical module and the active device are connected by optical communication. Optical labels can be implemented based on wavelength top modulation technology. The wavelength top modulation technology refers to the superposition of a small low-frequency sine or cosine modulation as an identifier on each wavelength at the transmitting end in a wavelength division multiplexing system, and different wavelengths are identified by different frequencies. When this low-frequency sine or cosine signal is superimposed on the optical wavelength, there is a modulation amplitude for the top of the optical wavelength, so it can also be called a top modulation signal. The optical module and the active device can exchange information through the optical label, so that the active device can obtain information from the optical module and send configuration parameters to the optical module. As shown Figure 3As shown, the active device and the optical module interact based on the OAM (operation, administration and maintenance) signal. The active device obtains the information reported by the optical module by monitoring the OAM signal. The optical module obtains the configuration parameters sent by the active device by receiving the OAM signal sent by the active device.

[0063] Exemplarily, the top-modulation OAM signal exchanged between the optical module and the active device may include information as shown in Table 1:

[0064] Table 1

[0065]

[0066]

[0067] The active device can obtain the optical module information and send the configuration based on the top-modulated OAM signal shown in Table 1.

[0068] Exemplarily, before the active device of the fronthaul system sends the first IP message carrying the control reporting information to the first edge device, the method further includes:

[0069] The active device obtains first information of itself, and / or obtains second information of an optical module of a fronthaul system based on the wavelength top tuning information;

[0070] Based on a preset encapsulation protocol, information including the first information and / or the second information is encapsulated into the first IP message.

[0071] Exemplarily, the first information of the active device maintained by the active device may be as shown in Table 2:

[0072] Table 2

[0073] id ID status NE status manufacturer Network element manufacturer name productName Product Name softwareVersion Software Version hardwareVersion Hardware version optModList Optical module list

[0074] The active device may also obtain second information of the optical module based on the top modulation OAM signal, that is, the information shown in the aforementioned Table 1.

[0075] Exemplarily, the main control board of the active device can encapsulate the first information and / or the second information into a first IP message based on Netconf (network configuration protocol), and send it to the first edge device from the network port of the main control board in the form of an IP message, for example, via a GE (Gigabit Ethernet, Gigabit Ethernet interface) port. Here, the first IP message can be an IP message generated by the active device in response to a query operation or configuration operation issued by the management and control system, so as to report the parameter information queried by the management and control system or the response information of the configuration operation to the management and control system. The destination IP address of the first IP message (i.e., the access address of the management and control system) can be pre-configured on the main control board of the active device.

[0076] For example, Figure 4 As shown, the main control board of the active device (also called the fronthaul active device) is configured with a GE port, and based on the GE port, bypasses the DU and connects to the metropolitan area device (i.e., the first edge device). Here, the first edge device can be a metropolitan area SPN (Slicing Packet Network) device arranged in the same computer room as the active device. For example, the GE port of the main control board is directly connected to the GE port of the SPN device in the same computer room. If multiple fronthaul active devices are deployed in the same computer room, the multiple fronthaul active devices can be connected to the SPN device after being aggregated through a switch. Here, the main control board of the active device encapsulates the Netconf message and sends it from the GE port of the main control board to the GE port of the SPN device in the form of an IP message. The destination IP address of the message is the IP address of the controller to which the device belongs (i.e., the address of the management and control system), which is pre-configured on the main control board of the active device.

[0077] Exemplarily, the DCN may be a metropolitan DCN deployed in a metropolitan area network or a provincial DCN deployed in a provincial backbone network. It is understandable that the management and control system may be centrally deployed in a city, for example, in a metropolitan DCN; or centrally deployed in a province, for example, in a provincial DCN.

[0078] like Figure 5 As shown in the figure, when the management and control system is deployed in the metro DCN, the optical module interacts with the active device by adjusting the OAM information. The active device is directly connected to the metro edge device in the same computer room through an out-of-band connection (i.e., the GE port of the main control board is connected to the GE port of the first edge device), and the management and control reporting information is forwarded to the metro network in the form of IP packets. The metro edge device is configured with a VLAN tunnel to directly forward the management and control reporting information to the metro DCN, and then sent to the management and control system through IP routing.

[0079] like Figure 6As shown, when the control system is deployed in the provincial backbone network, the optical module interacts with the active device by adjusting the OAM information, and the active device is directly connected to the metropolitan edge device in the same computer room through an out-of-band connection (i.e., the GE port of the main control board is connected to the GE port of the first edge device), and the control report information is forwarded to the metropolitan area network in the form of an IP message. The metropolitan edge device is configured with a VLAN tunnel to directly forward the control report information to the provincial backbone network, such as the provincial backbone OTN (Optical Transport Network), and the provincial backbone network forwards it to the control system through the internal DCN (i.e., the provincial backbone DCN).

[0080] For example, Figure 7 As shown, the management and control system is deployed in the metropolitan area network. The metropolitan area edge node A (i.e., the first edge device) provides a client-side GE port (port A) for receiving / forwarding management and control signaling. The GE port signal is directly connected to the main control board of the metropolitan area edge device. The main control board of the metropolitan area edge device encapsulates the outer layer of the signal with a VLAN tag (assuming that the encapsulated VLAN ID = VLAN1) and forwards it to the line side port for sending.

[0081] The metropolitan edge node B (i.e., the second edge device) identifies the VLAN and directly transfers the corresponding VLAN (VLAN1) to the device main control board. The device main control board identifies the VLAN, removes the VLAN tag of the corresponding VLAN (VLAN1), and restores it to an IP message. The message is directly transferred to the DCN network (i.e., metropolitan DCN) through the GE port (port B) on the main control board. The DCN network identifies the message IP address and transfers the signaling message to the corresponding management and control system. Among them, node A, node B, port A, port B, VLAN1, and VLAN1 tunnel are all pre-planned.

[0082] For example, Figure 8 As shown in the figure, the control system is deployed in the provincial backbone network. The metropolitan area network forwards the control signaling to the metropolitan area network edge network element (assuming it is node B), and then forwards it to the provincial backbone OTN network.

[0083] Within the metropolitan area network (SPN), a selected VLAN (VLAN1) is pre-planned, and VLAN switching is configured at each node in the metropolitan area network to form a VLAN tunnel from metropolitan area node A (i.e., the first edge device) to node B (i.e., the second edge device), and the control signaling is forwarded to node B through the VLAN tunnel.

[0084] The edge node (node ​​B) identifies the VLAN and directly transfers the corresponding VLAN (VLAN1) to the device main control board. The device main control board identifies the VLAN, removes the VLAN tag of the corresponding VLAN (VLAN1), restores it to an IP message, and transfers it to the client-side GE port (port B). Port B directly forwards the message to the connected provincial backbone device, and then forwards it to the management and control system based on IP routing in the provincial backbone network. Among them, node A, node B, port A, port B, VLAN1 and VLAN1 tunnel are all pre-planned. In this case, node B is the edge device node that connects the metropolitan area network with the provincial backbone network.

[0085] In some embodiments, the first edge device sends the first IP packet to the second edge device based on the configured VLAN tunnel, including:

[0086] The first edge device adds a first VLAN identifier indicating the address of the second edge device and a second VLAN identifier indicating the address of the aggregation device to the received first IP message;

[0087] The first edge device sends the first IP message to the aggregation device based on the second VLAN identifier;

[0088] The aggregation device sends the first IP message to the second edge device based on the first VLAN identifier.

[0089] Here, by setting up a convergence device, the management and control reporting information of multiple first edge devices can be converged to the second edge device.

[0090] like Fig. 9 As shown, in an application example, the control system is deployed on the metro DCN side, and the metro network is connected to the metro DCN through a gateway network element node (equivalent to the aforementioned second edge device). The control signaling of the fronthaul system under multiple metro edge devices (equivalent to the aforementioned first edge device) needs to be aggregated in the uplink direction and forwarded to the gateway network element node. In the downlink direction, it needs to be forwarded to the corresponding metro edge device through diversion.

[0091] Exemplarily, in the entire metropolitan area network (SPN network), control signaling uses a fixed SVLAN (outer VLAN, i.e., the aforementioned first VLAN identifier), and under the SVLAN, CVLAN (i.e., the aforementioned second VLAN identifier) ​​is allocated based on different SPN edge computer rooms. A signaling aggregation node is set up to aggregate the signaling of multiple active devices to the gateway network element.

[0092] Exemplarily, the working mechanism of each node in the metropolitan area network is as follows:

[0093] Edge Nodes:

[0094] The control signaling enters from a fixed port. For the uplink control signaling, that is, the first IP message carrying the control reporting information, a fixed SVLAN (unique in the entire network) and CVLAN (unique in the node) are added and forwarded to the signaling aggregation node (pre-configured path). It can be understood that for downlink control signaling, the edge node can send it directly to the fronthaul active device through an out-of-band connection.

[0095] Signaling aggregation node:

[0096] Downstream traffic is forwarded based on the forwarding table and CVLAN.

[0097] Configure the CVLAN-based forwarding table as follows:

[0098] CVLAN port XX PortXX XX PortXX

[0099] Here, the signaling aggregation node (ie, the aggregation device) may determine the downstream port based on the CVLAN, and thus forward the control downstream instruction to the corresponding first edge device based on the corresponding port.

[0100] The uplink is directly aggregated to the port on the other side (pre-configured), that is, the port connected to the gateway network element node.

[0101] Gateway network element node:

[0102] The downstream identifies the IP address and forwards based on the following forwarding table:

[0103] IP address CVLAN XX XX XX XX

[0104] Here, the gateway network element node (ie, the second edge device) may determine the CVLAN based on the target IP address corresponding to the control downlink instruction.

[0105] The upstream is directly transferred to the metro DCN or provincial trunk line (based on port pre-configuration).

[0106] For example, Fig.10 As shown in the figure, assuming that the control system is deployed in the provincial backbone network, the client-side GE port of the provincial backbone OTN edge device receives the IP message and forwards all the GE port signals to the device main control board, which forwards them based on the IP address. Since the provincial backbone OTN has implemented internal DCN, when the control system is deployed in the provincial backbone DCN, the OTN device main control board and the control system IP are reachable, and the signaling message can be directly forwarded to the control system through IP routing. The OTN device main control board needs to identify the message IP address and forward the signaling message to the corresponding control system according to the routing table configuration.

[0107] In order to control the transmission of downlink instructions, the embodiment of the present invention also provides a forward transmission control method, such as Fig.11 As shown, including:

[0108] Step 1101, the management and control system sends a second IP message carrying a management and control downlink instruction to a second edge device via the DCN;

[0109] Step 1102: The second edge device sends the second IP packet to the first edge device based on the configured VLAN tunnel;

[0110] Step 1103: The first edge device sends the second IP packet to an active device of a fronthaul system.

[0111] Exemplarily, the DCN may be a metropolitan DCN deployed in a metropolitan area network or a provincial DCN deployed in a provincial backbone network. It is understandable that the management and control system may be centrally deployed in a city, for example, in a metropolitan DCN; or centrally deployed in a province, for example, in a provincial DCN. For details, please refer to the aforementioned Figure 5 and Figure 6 The structure shown will not be described in detail here.

[0112] Here, the first edge device can be a metropolitan SPN device arranged in the same machine room as the active device. When the management and control system is deployed in the metropolitan DCN, the second edge device is a metropolitan edge node connected to the metropolitan DCN. When the management and control system is deployed in the provincial DCN, the second edge device is a metropolitan edge node connected to the provincial backbone network.

[0113] It is understandable that the active device in the fronthaul system and the remote optical module can interact based on the wavelength top tuning technology. For details, please refer to the above description and will not be repeated here.

[0114] In some embodiments, the downlink control instructions include instructions for the optical module, such as configuration operation instructions or query operation instructions, and the fronthaul control method also includes: the active device converts the instructions for operating the optical module of the fronthaul system carried in the second IP message into wavelength top adjustment information; the active device sends the wavelength top adjustment information to the optical module.

[0115] In some embodiments, the second edge device sends the second IP packet to the first edge device based on the configured VLAN tunnel, including:

[0116] The second edge device adds a third VLAN identifier indicating the address of the first edge device and a fourth VLAN identifier indicating the address of the aggregation device to the received second IP message;

[0117] The second edge device sends the second IP message to the aggregation device based on the fourth VLAN identifier;

[0118] The aggregation device sends the second IP message to the first edge device based on the third VLAN identifier.

[0119] For example, Fig. 9 As shown, the control system is deployed on the metropolitan DCN side, and the second IP message carrying the control downlink instruction issued by the control system is sent to the gateway network element node via the metropolitan DCN. The gateway network element node adds CVLAN (i.e., the third VLAN identifier) ​​based on the destination IP address, and adds a fixed SVLAN (i.e., the fourth VLAN identifier). The gateway network element node sends the second IP message to the signaling aggregation node based on the SVLAN, and the signaling aggregation node determines the first edge device corresponding to the second IP message based on the configured CVLAN forwarding table, thereby realizing the diversion of the control downlink instruction.

[0120] It is understandable that the multiple fronthaul systems may be fronthaul systems of different manufacturers. The embodiments of the present invention can realize centralized control of fronthaul systems of different manufacturers on the side of the centrally deployed control system through the aggregation of the aforementioned control reporting information. In addition, through the diversion of the aforementioned control downlink instructions, the control system can control the diversion of fronthaul systems of different manufacturers. In this way, while the multiple fronthaul systems are centrally controlled based on the control system, the decoupling of the fronthaul system and the control system of different manufacturers can be further realized, so that the fronthaul equipment of multiple manufacturers can be centrally controlled based on the common control system.

[0121] In an application example, Fig.12 As shown in the figure, the control signaling interaction between the control system and the remote optical module includes:

[0122] Step 1201, the management and control system sends a second IP message carrying an optical module query request to an active device of the fronthaul system based on the Netconf protocol;

[0123] Here, the management and control system can encapsulate the optical module query request into a second IP message based on the Netconf protocol, and the second IP message is forwarded to the corresponding active device through the aforementioned DCN, the second edge device and the first edge device.

[0124] Step 1202, the active device sends an optical module query request to a remote optical module based on the top-modulated OAM signal;

[0125] Here, the active device decapsulates the second IP message to obtain an optical module query request, converts the optical module query request into an optical module top-modulation OAM signal based on the wavelength top-modulation technology, and sends the optical module top-modulation OAM signal to the remote optical module.

[0126] Step 1203, the remote optical module returns the query result to the active device based on the top-modulated OAM signal;

[0127] Here, the remote optical module obtains the optical module query request based on the top-modulated OAM signal, and returns the query result to the active device in the form of the top-modulated OAM signal.

[0128] Step 1204: The active device reports the first IP message carrying the query result to the management and control system based on the Netconf protocol.

[0129] Here, the active device encapsulates the query result into a first IP message based on the Netconf protocol, and passes through the aforementioned first edge device, second edge device and DCN, and the first IP message is forwarded to the management and control system.

[0130] It is understandable that the centrally deployed control system can perform a unified abstraction of the optical module based on the top-modulation OAM signal described in Table 1, and can also perform a unified abstraction of the active device based on the first information described in Table 2, thereby realizing the centralized control of the fronthaul systems of different manufacturers. It should be noted that if the control system controls the active devices in the fronthaul system, the Fig.12 In step 1202 and step 1203, the active device generates a query result based on the query request, and encapsulates the query result into a first IP message and reports it to the management and control system, which will not be repeated here.

[0131] In order to implement the fronthaul control method of the embodiment of the present invention, the embodiment of the present invention also provides a fronthaul control system, such as Fig.13 As shown, it includes: a fronthaul system 1301, a first edge device 1302, a second edge device 1303, a DCN 1304 and a control system 1305. Among them, the fronthaul system 1301 is configured to send a first IP message carrying control reporting information to the first edge device 1302. The first edge device 1302 is configured to send the first IP message to the second edge device 1303 based on the configured VLAN tunnel. The second edge device 1303 is configured to send the first IP message to the DCN 1304, and the DCN 1304 sends the first IP message to the control system 1305 based on IP routing.

[0132] Exemplarily, the control system 1305 is configured to send the second IP message carrying the control downlink instruction to the second edge device 1303 via the DCN 1304. The second edge device 1303 is configured to send the second IP message to the first edge device 1302 based on the configured VLAN tunnel. The first edge device 1302 is configured to send the second IP message to the active device of the fronthaul system 1301.

[0133] Exemplarily, the fronthaul system 1301 includes: an active device and an optical module located at a remote end, and the optical module and the active device are connected by optical communication. Figure 3The above-mentioned related descriptions will not be repeated here.

[0134] Exemplarily, DCN 1304 may be a metropolitan DCN deployed in a metropolitan area network or a provincial DCN deployed in a provincial backbone network. It is understandable that the management and control system 1305 may be centrally deployed in a city, for example, in a metropolitan DCN; or centrally deployed in a province, for example, in a provincial DCN.

[0135] Exemplarily, corresponding to the plurality of first edge devices 1302, a convergence device ( Fig.13 (not shown), the aggregation device can aggregate the upstream control reporting information of each first edge device 1302 to the second edge device 1303. Correspondingly, the downstream control downlink instructions of the second edge device 1303 can be diverted by the aggregation device and sent to the corresponding first edge device 1302. For details, please refer to the relevant description of the aforementioned method, which will not be repeated here.

[0136] It should be noted that: "first", "second", etc. are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0137] In addition, the technical solutions described in the embodiments of the present invention can be arbitrarily combined without conflict.

[0138] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A fronthaul control method, characterized in that: include: The active device of the fronthaul system sends a first Internet Protocol IP message carrying the control reporting information to the first edge device; The first edge device sends the first IP message to the second edge device based on the configured virtual local area network VLAN tunnel; The second edge device sends the first IP message to a data communication network DCN, and the DCN sends the first IP message to a management and control system based on IP routing.

2. The method according to claim 1, characterized in that Before the active device of the fronthaul system sends the first IP message carrying the control reporting information to the first edge device, the method further includes: The active device obtains first information of itself, and / or obtains second information of an optical module of a fronthaul system based on the wavelength top tuning information; Based on a preset encapsulation protocol, information including the first information and / or the second information is encapsulated into the first IP message.

3. The method according to claim 1, characterized in that The first edge device sends the first IP message to the second edge device based on the configured VLAN tunnel, including: The first edge device adds a first VLAN identifier indicating the address of the second edge device and a second VLAN identifier indicating the address of the aggregation device to the received first IP message; The first edge device sends the first IP message to the aggregation device based on the second VLAN identifier; The aggregation device sends the first IP message to the second edge device based on the first VLAN identifier.

4. The method according to claim 1, characterized in that: The DCN is a metropolitan DCN deployed in a metropolitan area network or a provincial backbone DCN deployed in a provincial backbone network.

5. A fronthaul control method, characterized in that: include: The management and control system sends the second IP message carrying the management and control downlink instruction to the second edge device via the DCN; The second edge device sends the second IP message to the first edge device based on the configured VLAN tunnel; The first edge device sends the second IP message to an active device of the fronthaul system.

6. The method according to claim 5, characterized in that The method further comprises: The active device converts the instruction for operating the optical module of the fronthaul system carried in the second IP message into wavelength adjustment information; The active device sends the wavelength adjustment information to the optical module.

7. The method according to claim 5, characterized in that The second edge device sends the second IP message to the first edge device based on the configured VLAN tunnel, including: The second edge device adds a third VLAN identifier indicating the address of the first edge device and a fourth VLAN identifier indicating the address of the aggregation device to the received second IP message; The second edge device sends the second IP message to the aggregation device based on the fourth VLAN identifier; The aggregation device sends the second IP message to the first edge device based on the third VLAN identifier.

8. The method according to claim 5, characterized in that The DCN is a metropolitan DCN deployed in a metropolitan area network or a provincial backbone DCN deployed in a provincial backbone network.

9. A system for fronthaul control, characterized in that: include: A forwarding system configured to send a first IP message carrying control reporting information to a first edge device; A first edge device, configured to send the first IP message to a second edge device based on a configured VLAN tunnel; The second edge device is configured to send the first IP message to the DCN, and the DCN sends the first IP message to the management and control system based on IP routing.

10. A system for fronthaul control, characterized in that: include: The control system is configured to send the second IP message carrying the control downlink instruction to the second edge device via the DCN; A second edge device, configured to send the second IP message to the first edge device based on a configured VLAN tunnel; The first edge device is configured to send the second IP message to an active device of a fronthaul system.

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