CN109120348B - Metropolitan area network system and network access system thereof - Google Patents
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Abstract
The invention discloses a network access system, which comprises an annular optical fiber network; a plurality of user switching devices respectively connected with a preset number of users; a metropolitan area network switching device connected with the metropolitan area network; the first data direction management equipment is arranged on the annular optical fiber network and connected with the metropolitan area network switching equipment; and the second data direction management equipment is used for controlling the received user data to be transmitted on the annular optical fiber network according to a preset direction and controlling the received user data to be transmitted to the first data direction management equipment on the annular optical fiber network along a channel when a breakpoint is generated on the annular optical fiber network. Even if the annular optical fiber network generates a breakpoint, the network breaking accident can not occur, and the reliability of the user network is improved. The invention also discloses a metropolitan area network system which has the same beneficial effects as the network access system.
Description
Technical Field
The invention relates to the field of metropolitan area networks, in particular to a network access system and a metropolitan area network system.
Background
The network access system is used for connecting each user with the metropolitan area network so that the user can enjoy various services brought by the network, one end of a plurality of user switching devices in the network access system is connected with the metropolitan area network switching device, the other end of the plurality of user switching devices is connected with a certain number of users so as to realize the butt joint of the metropolitan area network and the user, along with the upgrade of the bandwidth of the user network, the user switching device is gradually transferred to a place closer to the user, the distance between the metropolitan area network switching device and the user switching device is longer, and no mature network access system exists for the situation, if the original tree connection mode is continued, the optical fiber between the metropolitan area network switching device and the user switching device is probably cut off due to municipal construction and other reasons, all the users connected with the user switching device can be disconnected from the metropolitan area network, and network disconnection accidents are generated, the reliability of the user network is poor, and inconvenience is brought to the user.
Therefore, how to provide a solution to the above technical problem is a problem that needs to be solved by those skilled in the art.
Disclosure of Invention
The invention aims to provide a network access system, which reduces the probability of network disconnection accidents and increases the reliability of a user network; another object of the present invention is to provide a metropolitan area network system including the above network access system, which reduces the probability of network outage and increases the reliability of the user network.
To solve the above technical problem, the present invention provides a network access system, including:
a ring-shaped fiber optic network;
the system comprises a plurality of user switching devices which are respectively connected with a preset number of users and used for sending user data sent by the users to a second data direction management device connected with the user switching devices; acquiring appointed metropolitan area network data from the annular optical fiber network through the corresponding second data direction management equipment and sending the metropolitan area network data to a user;
the metropolitan area network switching equipment is connected with the metropolitan area network and used for sending metropolitan area network data sent by the metropolitan area network to the first data direction management equipment; acquiring user data from the annular optical fiber network through the first data direction management equipment and sending the user data to the metropolitan area network;
the first data direction management equipment is arranged on the annular optical fiber network, connected with the metropolitan area network switching equipment and used for controlling the received metropolitan area network data to be transmitted on the annular optical fiber network according to a preset direction and controlling the received metropolitan area network data to be transmitted to the second data direction management equipment corresponding to a target user on the annular optical fiber network along a path when a breakpoint is generated on the annular optical fiber network; acquiring the user data from the optical fiber network and sending the user data to the metropolitan area network switching equipment;
the second data direction management devices are respectively arranged on the ring-shaped optical fiber network, are respectively connected with the user switching devices in a one-to-one correspondence manner, and are used for controlling the received user data to be transmitted on the ring-shaped optical fiber network according to the preset direction and controlling the received user data to be transmitted to the first data direction management device on the ring-shaped optical fiber network along a path when a breakpoint occurs on the ring-shaped optical fiber network; and acquiring the appointed data of the metropolitan area network from the annular optical fiber network and sending the data to the user switching equipment.
Preferably, the first data direction management device and the second data direction management device are both IP-based IPRAN devices of a transmission network.
Preferably, the metro network switching device is a metro network office.
Preferably, the user switching device is an optical line terminal OLT device.
Preferably, the controlling the received user data to be transmitted to the first data direction management device along a path on the ring-shaped optical fiber network when the breakpoint occurs in the ring-shaped optical fiber network specifically includes:
after the second data direction management device closest to the breakpoint detects the breakpoint, sending a notification instruction to all other second data direction management devices and the first data direction management device along the ring optical fiber network, so that the plurality of second data direction management devices control the received user data to be transmitted to the first data direction management device along a path on the ring optical fiber network;
the step of controlling the received data of the metropolitan area network to be transmitted to the second data direction management device corresponding to the target user along the path on the ring-shaped optical fiber network when the breakpoint occurs in the ring-shaped optical fiber network specifically includes:
and after the notification instruction is received, controlling the received data of the metropolitan area network to be transmitted to the second data direction management equipment corresponding to the target user along a passage on the annular optical fiber network.
In order to solve the technical problem, the present invention further provides a metropolitan area network system, which includes the network access system as described in any one of the above.
Preferably, the network access system is multiple.
The invention provides a network access system, which comprises an annular optical fiber network; the system comprises a plurality of user switching devices which are respectively connected with a preset number of users and used for sending user data sent by the users to a second data direction management device connected with the user switching devices; acquiring appointed metropolitan area network data from the annular optical fiber network through corresponding second data direction management equipment and sending the metropolitan area network data to a user; the metropolitan area network switching equipment is connected with the metropolitan area network and used for sending metropolitan area network data sent by the metropolitan area network to the first data direction management equipment; acquiring user data from the annular optical fiber network through first data direction management equipment and sending the user data to a metropolitan area network; the first data direction management equipment is arranged on the annular optical fiber network, is connected with the metropolitan area network switching equipment and is used for controlling the received metropolitan area network data to be transmitted on the annular optical fiber network according to a preset direction and controlling the received metropolitan area network data to be transmitted to second data direction management equipment corresponding to a target user on the annular optical fiber network along a path when a breakpoint is generated on the annular optical fiber network; acquiring the user data from the optical fiber network and sending the user data to the metropolitan area network switching equipment; the second data direction management devices are respectively arranged on the annular optical fiber network, are respectively connected with the user switching devices in a one-to-one correspondence manner, and are used for controlling the received user data to be transmitted on the annular optical fiber network according to a preset direction and controlling the received user data to be transmitted to the first data direction management device on the annular optical fiber network along a path when a breakpoint is generated on the annular optical fiber network; and acquiring the appointed data of the metropolitan area network from the annular optical fiber network and sending the data to the user switching equipment.
It can be seen that, in the present invention, the first data direction management device can receive the metro area network data sent by the metro area network switching device and control the data to be transmitted in the preset direction on the ring optical fiber network, the second data direction management device can receive the user data sent by the corresponding user switching device and control the data to be transmitted in the preset direction on the ring optical fiber network, when the ring optical fiber network generates a breakpoint, the first data direction management device can control the received metro area network data to be transmitted to the second data direction management device corresponding to the target user along the path on the ring optical fiber network, and the second data direction management device can control the received user data to be transmitted to the first data direction management device along the path on the ring optical fiber network, in all the above processes, the first data direction management device and the second data direction management device can both obtain the designated metro area network data or user data from the ring optical fiber network, under the condition, even if the annular optical fiber network generates a breakpoint, the first data direction management device and the second data direction management device can control the received user data or the received metropolitan area network data to be transmitted to the specified second data direction management device or the first data direction management device along the path on the annular optical fiber network, so that the normal use of the network is realized, the network disconnection accident cannot occur, and the reliability of the user network is improved.
The invention also provides a metropolitan area network system which has the same beneficial effects as the network access system.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed in the prior art and the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a network access system according to the present invention.
Detailed Description
The core of the invention is to provide a network access system, which reduces the probability of network disconnection accidents and increases the reliability of the user network; the other core of the invention is to provide a metropolitan area network system comprising the network access system, thereby reducing the probability of network breaking accidents and increasing the reliability of a user network.
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a network access system provided in the present invention, including:
a ring-shaped optical fiber network 1;
the user switching equipment 2 is respectively connected with a preset number of users and is used for sending user data sent by the users to the connected second data direction management equipment 5; acquiring appointed metropolitan area network data from the annular optical fiber network 1 through the corresponding second data direction management equipment 5 and sending the metropolitan area network data to a user;
the metropolitan area network switching equipment 3 is connected with the metropolitan area network and is used for sending metropolitan area network data sent by the metropolitan area network to the first data direction management equipment 4; acquiring user data from the annular optical fiber network 1 through the first data direction management equipment 4 and sending the user data to a metropolitan area network;
the first data direction management equipment 4 is arranged on the annular optical fiber network 1, is connected with the metropolitan area network switching equipment 3 and is used for controlling the received metropolitan area network data to be transmitted on the annular optical fiber network 1 according to a preset direction and controlling the received metropolitan area network data to be transmitted to the second data direction management equipment 5 corresponding to a target user on the annular optical fiber network 1 along a path when a breakpoint is generated on the annular optical fiber network 1; acquiring user data from an optical fiber network and sending the user data to metropolitan area network switching equipment;
a plurality of second data direction management devices 5, which are all arranged on the ring-shaped optical fiber network 1 and are respectively connected with the user switching devices 2 in a one-to-one correspondence manner, and are used for controlling the received user data to be transmitted on the ring-shaped optical fiber network 1 according to a preset direction and controlling the received user data to be transmitted to the first data direction management device 4 on the ring-shaped optical fiber network 1 along a path when a breakpoint occurs on the ring-shaped optical fiber network 1; and acquiring the appointed data of the metropolitan area network from the ring-shaped optical fiber network and sending the data to the user switching equipment.
Specifically, in view of the technical problems in the background art, in the embodiment of the present invention, unlike the conventional tree-like optical fiber network, the use of the ring-like optical fiber network 1 makes the entire network structure not fragile any more, and even if the optical fiber on the side of the second data direction management device 5 corresponding to the user switching device 2 is broken, the second data direction management device 5 can also receive and transmit data from the optical fiber in the other direction, so that when a break point occurs in the ring-like optical fiber network 1, the metropolitan area network can be kept unblocked infinitely and quickly by adjusting the data transmission direction, but in an extreme case, for example, when all the optical fibers in two directions of a certain second data direction management device 5 are broken, the network can be kept unblocked only by repairing the optical fiber, which requires a certain time, but in a normal case, the probability that two opposite optical fibers of the same second data direction management device 5 or the first data direction management device 4 are broken simultaneously is almost equal to the same optical fiber in the same And (4) zero.
If only the ring optical fiber network 1, the user switching device 2, and the metropolitan area network switching device 3 are used, but the first data direction management device 4 and the second data direction management device 5 are not used, when a breakpoint occurs in the ring optical fiber network 1, the adjustment of the data transmission direction cannot be automatically performed, and a network disconnection situation may also occur.
Specifically, the user switching device 2 may implement data interaction between the user and the second data direction management device 5, the second data direction management device 5 may send the received user data to the ring-shaped optical fiber network 1 according to a preset direction, and transmit the user data to the first data direction management device 4 corresponding to the metro area network switching device 3 through the ring-shaped optical fiber network 1, and the second data direction management device 5 may further identify whether the metro area network data transmitted in the ring-shaped optical fiber network 1 is required by itself, and if so, may acquire the metro area network data, and send the metro area network data to the user through the user switching device 2.
Specifically, as with the user switching device 2, the metropolitan area network switching device 3 may also send metropolitan area network data sent by the metropolitan area network to the first data direction management device 4, and the first data direction management device 4 may send the received metropolitan area network data to the ring-shaped optical fiber network 1 in a reverse direction according to a preset direction, and may also obtain user data transmitted on the ring-shaped optical fiber network and send the user data to the metropolitan area network through the metropolitan area network switching device 3.
Wherein, when no break point is generated on the ring optical fiber network 1, in an initial state, no matter the first data direction management device 4 or the second data direction management device 5, the received user data or the metropolitan area network data can be controlled to be transmitted on the ring optical fiber network 1 according to a uniform preset direction, such as clockwise or counterclockwise transmission, and when the break point is generated on the ring optical fiber network 1, the first data direction management device 4 can control the metropolitan area network data to be transmitted on the ring optical fiber network 1 along a path to the second data direction management device 5 corresponding to the target user, for example, when a break point is generated, the first data direction management device 4 can divide the metropolitan area network data into left and right directions for transmission, and the second data direction management device 5 can control the user data to be transmitted on the ring optical fiber network 1 along a path to the first data direction management device 4, similarly, when a breakpoint is generated, the second data direction management devices 5 at two sides of the breakpoint need to transmit the user data to the first data direction management device 4 along two different directions, where one side of the breakpoint only needs to maintain the original preset direction, and the other side of the breakpoint needs to transmit the user data to the first data direction management device 4 in the opposite direction.
Specifically, the ring-shaped optical fiber network 1 may adopt various types, such as a two-core type, and the first data direction management device 4 and the second data direction management device 5 both perform data transmission along one core in the same preset direction in the initial state, which is not limited herein in the embodiment of the present invention.
Specifically, when the second data direction management device 5 acquires user data required by a corresponding user from the ring optical fiber network 1, the user data may be identified by an identifier attached to the user data, for example, the user data is marked with a first user, and the first user is in a user group to which a certain second data direction management device 5 is correspondingly connected, so that the second data direction management device 5 may acquire the user data and send the user data to the first user through the user forwarding device 2.
In the embodiment of the present invention, a user may upload user data to a metropolitan area network, or download required data from the metropolitan area network, where both the two processes are included in the data interaction process, and the user data and the metropolitan area network data may include control instructions and the like in addition to file data, which is not limited herein.
The preset number of users connected to each user switching device 2 may be set autonomously according to actual conditions, which is not limited herein in the embodiments of the present invention.
In addition, in the background art mentioned above, the user switching device 2 is disposed at a place far from the metro network switching device 3 and close to the user, so that the utilization rate of the optical fiber resource can be effectively improved, and the input cost of the optical fiber can be saved.
On the basis of the above-described embodiment:
as a preferred embodiment, the first data direction management device 4 and the second data direction management device 5 are both IP IPRAN devices of the transmission network.
Specifically, the IPRAN device has the advantages of multi-service bearing, ultra-high bandwidth, good service quality, high reliability and the like.
The IPRAN technology can be an upgrade of the original SDH (Synchronous Digital Hierarchy) technology, and has not only a protection mode of data transmission of the SDH technology but also an advantage of a large bandwidth of IP network data transmission.
Of course, the first data direction management device 4 and the second data direction management device 5 may also be other types of data direction management devices besides the IPRAN device, and the embodiment of the present invention is not limited herein.
In a preferred embodiment, the metro network switching device 3 is a metro network office.
Specifically, the local side of the metropolitan area network has the advantages of reliability, good performance and the like.
Of course, besides the metro network office, the metro network switching device 3 may be of another type, and the embodiment of the present invention is not limited herein.
As a preferred embodiment, the user switching device 2 is an OLT (optical line terminal) device.
Specifically, the OLT has the advantages of high reliability, low price, stable performance and the like.
Of course, the user switching device 2 may be of another type besides the OLT, and the embodiment of the present invention is not limited herein.
In addition, an embodiment of the present invention provides a complete process for establishing a network access system, which may include:
step 1: predicting user requirements in an OLT coverage range, and determining the requirement of OLT uplink transmission bandwidth capacity;
step 2: determining the capacity of the IPRAN equipment;
and step 3: carrying out IPRAN logical networking design according to the existing network architecture;
and 4, step 4: designing a physical optical fiber network according to the logic networking;
and 5: and constructing a network access system according to the design scheme.
As a preferred embodiment, when a breakpoint occurs in the ring optical fiber network 1, controlling the received user data to be transmitted to the first data direction management device 4 along the path on the ring optical fiber network 1 specifically includes:
after detecting the breakpoint, the second data direction management device 5 closest to the breakpoint sends a notification instruction to all other second data direction management devices 5 and the first data direction management device 4 along the ring optical fiber network 1, so that the plurality of second data direction management devices 5 control the received user data to be transmitted to the first data direction management device 4 along the path on the ring optical fiber network 1;
then, when the ring optical fiber network 1 generates a breakpoint, controlling the received data of the metropolitan area network to be transmitted to the second data direction management device 5 corresponding to the target user along the path on the ring optical fiber network 1 specifically includes:
and after receiving the notification instruction, controlling the received data of the metropolitan area network to be transmitted to the second data direction management device 5 corresponding to the target user along the path on the ring-shaped optical fiber network 1.
Specifically, in the actual application process, a uniform preset direction is first set for the first data direction management device 4 and the second data direction management device 5 to perform data transmission, and when a breakpoint occurs, the distance of the normal breakpoint is close to the second data direction management device 5, in this case, the second data direction management device 5 closest to the breakpoint will detect the breakpoint, and then the second data direction management device 5 finding the breakpoint can send a notification instruction to all other second data direction management devices 5 and all first data direction management devices 4, the second data direction management device 5 and the first data direction management device 4 receiving the notification instruction can adjust the data transmission direction, and control the user data or the metro data received by itself not to be transmitted on the ring optical fiber network 1 according to the preset direction, the data are transmitted on the ring-shaped optical fiber network 1 along a path, wherein the path refers to a line which is smooth with an optical fiber between target data direction management equipment, and the data interaction between the metropolitan area network and a user can be rapidly recovered in the information interaction mode, so that the reliability of the user network is ensured.
Of course, in addition to the handling method between the data direction management devices mentioned in the embodiment of the present invention, the handling method of the data direction management devices may be of other types, for example, if the interruption point is closest to the first data direction management device 4, the first data direction management device 4 may also find the interruption point and send the notification instruction to all the second data direction management devices 5, which is not limited herein.
The notification instruction may be sent to other data direction management devices along a path on the ring optical fiber network 1.
The invention also provides a metropolitan area network system, which comprises the network access system in the embodiment.
In a preferred embodiment, the network access system is a plurality of network access systems.
For the description of the metro network system provided in the embodiment of the present invention, please refer to the foregoing embodiment of the network access system, which is not described herein again.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. It is further noted that, in the present specification, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (6)
1. A network access system, comprising:
a ring-shaped fiber optic network;
the system comprises a plurality of user switching devices which are respectively connected with a preset number of users and used for sending user data sent by the users to a second data direction management device connected with the user switching devices; acquiring appointed metropolitan area network data from the annular optical fiber network through the corresponding second data direction management equipment and sending the metropolitan area network data to a user;
the metropolitan area network switching equipment is connected with the metropolitan area network and used for sending metropolitan area network data sent by the metropolitan area network to the first data direction management equipment; acquiring user data from the annular optical fiber network through the first data direction management equipment and sending the user data to the metropolitan area network;
the first data direction management equipment is arranged on the annular optical fiber network, connected with the metropolitan area network switching equipment and used for controlling the received metropolitan area network data to be transmitted on the annular optical fiber network according to a preset direction and controlling the received metropolitan area network data to be transmitted to the second data direction management equipment corresponding to a target user on the annular optical fiber network along a path when a breakpoint is generated on the annular optical fiber network; acquiring the user data from the optical fiber network and sending the user data to the metropolitan area network switching equipment;
the second data direction management devices are respectively arranged on the ring-shaped optical fiber network, are respectively connected with the user switching devices in a one-to-one correspondence manner, and are used for controlling the received user data to be transmitted on the ring-shaped optical fiber network according to the preset direction and controlling the received user data to be transmitted to the first data direction management device on the ring-shaped optical fiber network along a path when a breakpoint occurs on the ring-shaped optical fiber network; acquiring the appointed data of the metropolitan area network from the annular optical fiber network and sending the data to the user switching equipment;
the step of controlling the received user data to be transmitted to the first data direction management device along a path on the ring-shaped optical fiber network when the ring-shaped optical fiber network generates a breakpoint specifically includes:
after the second data direction management device closest to the breakpoint detects the breakpoint, sending a notification instruction to all other second data direction management devices and the first data direction management device along the ring optical fiber network, so that the plurality of second data direction management devices control the received user data to be transmitted to the first data direction management device along a path on the ring optical fiber network;
the step of controlling the received data of the metropolitan area network to be transmitted to the second data direction management device corresponding to the target user along the path on the ring-shaped optical fiber network when the breakpoint occurs in the ring-shaped optical fiber network specifically includes:
and after the notification instruction is received, controlling the received data of the metropolitan area network to be transmitted to the second data direction management equipment corresponding to the target user along a passage on the annular optical fiber network.
2. The network access system of claim 1, wherein the first data direction management device and the second data direction management device are transport network IP IPRAN devices.
3. The network access system of claim 2, wherein the metro network switching device is a metro network office.
4. The network access system of claim 3, wherein the user switching device is an Optical Line Termination (OLT) device.
5. Metropolitan network system comprising a network access system according to any of claims 1 to 4.
6. The metro network system according to claim 5, wherein the network access system is plural.
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