CN109379290A - The topological automatic discovering method of the star-like networking of VSAT - Google Patents

The topological automatic discovering method of the star-like networking of VSAT Download PDF

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Publication number
CN109379290A
CN109379290A CN201811458594.5A CN201811458594A CN109379290A CN 109379290 A CN109379290 A CN 109379290A CN 201811458594 A CN201811458594 A CN 201811458594A CN 109379290 A CN109379290 A CN 109379290A
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CN
China
Prior art keywords
vsat
topology
main website
end station
information
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Pending
Application number
CN201811458594.5A
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Chinese (zh)
Inventor
徐宝林
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Sichuan Andi Technology Industrial Co Ltd
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Sichuan Andi Technology Industrial Co Ltd
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Priority to CN201811458594.5A priority Critical patent/CN109379290A/en
Publication of CN109379290A publication Critical patent/CN109379290A/en
Pending legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00—Routing or path finding of packets in data switching networks
    • H04L45/02—Topology update or discovery
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/185—Space-based or airborne stations; Stations for satellite systems
    • H04B7/1851—Systems using a satellite or space-based relay
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/1607—Details of the supervisory signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/44—Star or tree networks

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Astronomy & Astrophysics (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Radio Relay Systems (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

The present invention proposes a kind of topological automatic discovering method of star-like networking of VSAT, is related to network topology structure and automatically updates field.The present invention solves in current VSAT satellite communication system, network topology is mainly calculated by the lock state of receiving channel, the topology information that this method can obtain is fairly limited, such as the problems such as can not know the configuration information of the port information, end station that send and receive channel.Its drip irrigation device are as follows: after main website issues QUERY frame, play a timer, be more than that VSAT network topology is calculated according to the REPLY frame of all end station received after response window；If the topology of end station changes, one REPLY frame of active reporting, notice main website updates topology information；The topology information of main website oneself is directly obtained from associated inner module, if the topology of main website changes, by the topological processing module of associated inner module notice main website.The invention has the advantages that the maintenance and monitoring of VSAT satellite communication system can greatly be facilitated, O&M cost is reduced.

Description

The topological automatic discovering method of the star-like networking of VSAT
Technical field
The present invention relates to the star-like networking technology of VSAT, in particular to the technology of topological automatic discovering in the star-like networking of VSAT.
Background technique
Mainly manually addition configures to safeguard the network topology structure of current main VSAT satellite communication system, and The variation that network topology can not be automatically updated, with the development of satellite communication field, in VSAT satellite communication system, although It has been realized in through the lock state of receiving channel and calculates network topology, but the topology information phase that this method can obtain When configuration information etc. that is limited, such as can not knowing the port information, end station that send and receive channel.
Summary of the invention
The object of the present invention is to provide a kind of topological automatic discovering methods of the star-like networking of VSAT, solve current VSAT satellite In communication system, network topology, the topology information that this method can obtain mainly are calculated by the lock state of receiving channel It is fairly limited, such as the problems such as can not know the configuration information of the port information, end station that send and receive channel.
The present invention solves its technical problem, the technical solution adopted is that: the topological automatic discovering method of the star-like networking of VSAT, The following steps are included:
Step 1, setting often receive a REPLY and need to reply ACK confirmation to end station；
After step 2, main website issue QUERY frame, a timer is played, is more than to be owned after response window according to what is received The REPLY frame of end station calculates VSAT network topology；
If step 3, the topology of end station change, one REPLY frame of active reporting, notice main website updates topology letter Breath；
The topology information of step 4, main website oneself is directly obtained from associated inner module, if the topology of main website becomes Change, then by the topological processing module of associated inner module notice main website.
Specifically, in step 2, the calculating VSAT network topology method particularly includes: if the TX_ of some equipment The center frequency point and bandwidth of the RX_INFO of the center frequency point and bandwidth and another equipment of INFO matches, then it is assumed that they it Between have an effective transmission link, for finally cannot matched channel be then denoted as faulty link.
Further, in step 2, specifically included in the VSAT network topology of the calculating all end station information and it is all in Frequency link information.
Specifically, the model and configuration of all end station are included at least in all end station information, all intermediate frequencies connect It connects information and includes at least port and the status information for sending and receiving channel.
Still further, transmitting topology information using L 2 broadcast signaling in step 3.
The invention has the advantages that by the topological automatic discovering method of the star-like networking of above-mentioned VSAT, it is star-like in VSAT In networking, main website can calculate the topological structure of current network automatically, specifically include all end station information (models, configuration Deng), all intermediate frequency link informations (port, state etc.)；Meanwhile after topology changes, main website can update relevant information.It opens up The maintenance and monitoring of VSAT satellite communication system can greatly be facilitated by flutterring automatic discovery, reduce O&M cost.
Also, the present invention transmits topology information using L 2 broadcast signaling, relative to two layers of unicast or three layers of IP (UDP) Mode is low to network deployment request, realizes simple (independent of IP layers), L 2 broadcast mechanism is utilized and has got through Signalling exchange Path；It is true to increase ACK in satellite network Topology Discovery module for the first time for high latency, high bit-error feature for satellite network Recognize mechanism, it is ensured that under high bit-error scene, also can efficiently carry out topological calculating.
Specific embodiment
Below with reference to embodiment, the technical schemes of the invention are described in detail.
The topological automatic discovering method of the star-like networking of VSAT of the present invention, comprising the following steps:
Step 1, setting often receive a REPLY and need to reply ACK confirmation to end station；
After step 2, main website issue QUERY frame, a timer is played, is more than to be owned after response window according to what is received The REPLY frame of end station calculates VSAT network topology；
If step 3, the topology of end station change, one REPLY frame of active reporting, notice main website updates topology letter Breath；
The topology information of step 4, main website oneself is directly obtained from associated inner module, if the topology of main website becomes Change, then by the topological processing module of associated inner module notice main website.
Embodiment
The CPU in master station period of the embodiment of the present invention sends Query of Topological QUERY frame, and destination address D-MAC uses L 2 broadcast Using the NIC address for issuing frame, TYPE is fixed to use retention by address 0xff-ff-ff-ff-ff-ff, source address S-MAC 0x88DD, with followed by two TLV, QUERY and END, wherein QUERY frame identification inquires topology information, END frame to all end station Identify the end of signaling；After end station CPU receives QUERY frame, need to reply REPLY frame, wherein destination address D-MAC is used The S-MAC of QUERY frame, the i.e. address of the MAC of end station, for raw address S-MAC using the NIC address for issuing REPLY frame, TYPE is solid Surely it uses retention 0x88DD, first TLV to need to encapsulate REPLY, with the topology information of this end station in post package, specifically may For VSAT_INFO, TX_INFO, RX_INFO, the last one TLV needs to encapsulate END.Due to satellite network high latency, high bit error Rate feature, end station need to wait after replying REPLY frame main website ACK to confirm, exceed the time limit not receive ACK confirmation and then retransmit.
Main website topological automatic discovering algorithm is accomplished by
A REPLY is often received to need to reply ACK confirmation to end station.
After main website issues QUERY frame, a timer is played, after being more than response window (default 1 minute), according to receiving All end station REPLY frame calculate VSAT network topology, specific algorithm are as follows: if the center of the TX_INFO of some equipment The center frequency point and bandwidth of frequency point and the RX_INFO of bandwidth and another equipment match, then it is assumed that have one to have between them Imitate transmission link, for finally cannot matched channel be then denoted as faulty link；
If the topology of end station changes, one REPLY frame of active reporting, notice main website updates topology information；
The topology information of main website oneself is directly obtained from associated inner module, if the topology of main website changes, by The topological processing module of relevant module notice main website；
The VSAT topology information that main website calculates externally (such as network management) can provide query interface, facilitate the fortune of network Dimension.

Claims (5)

  1. The topological automatic discovering method of the star-like networking of 1.VSAT, which comprises the following steps:
    Step 1, setting often receive a REPLY and need to reply ACK confirmation to end station；
    Step 2, main website issue QUERY frame after, rise a timer, be more than response window after, according to all end station received REPLY frame calculate VSAT network topology；
    If step 3, the topology of end station change, one REPLY frame of active reporting, notice main website updates topology information；
    The topology information of step 4, main website oneself is directly obtained from associated inner module, if the topology of main website changes, By the topological processing module of associated inner module notice main website.
  2. 2. the topological automatic discovering method of the star-like networking of VSAT according to claim 1, which is characterized in that in step 2, institute It states and calculates VSAT network topology method particularly includes: if the center frequency point and bandwidth of the TX_INFO of some equipment and another The center frequency point and bandwidth of the RX_INFO of a equipment matches, then it is assumed that has an effective transmission link between them, for most Eventually cannot matched channel be then denoted as faulty link.
  3. 3. the topological automatic discovering method of the star-like networking of VSAT according to claim 1 or 2, which is characterized in that step 2 In, all end station information and all intermediate frequency link informations are specifically included in the VSAT network topology of the calculating.
  4. 4. the topological automatic discovering method of the star-like networking of VSAT according to claim 3, which is characterized in that all ends The model and configuration of all end station are included at least in information of standing, all intermediate frequency link informations are logical including at least sending and receiving The port in road and status information.
  5. 5. the topological automatic discovering method of the star-like networking of VSAT according to claim 1, which is characterized in that in step 3, benefit Topology information is transmitted with L 2 broadcast signaling.
CN201811458594.5A 2018-11-30 2018-11-30 The topological automatic discovering method of the star-like networking of VSAT Pending CN109379290A (en)

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Application publication date: 20190222