CN106921550B - It can recognize the looped network signal transmission method of website sequence and quantity - Google Patents
It can recognize the looped network signal transmission method of website sequence and quantity Download PDFInfo
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- CN106921550B CN106921550B CN201710072168.7A CN201710072168A CN106921550B CN 106921550 B CN106921550 B CN 106921550B CN 201710072168 A CN201710072168 A CN 201710072168A CN 106921550 B CN106921550 B CN 106921550B
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- data bag
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- 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]
- H04L12/42—Loop networks
Abstract
The invention discloses the looped network signal transmission methods of recognizable website sequence and quantity, comprising steps of several signaling receiving channels and signaling sendaisle are arranged for each website；Sum of the quantity of signaling receiving channel not less than website in looped network.Each signaling receiving channel of this website receives the signaling data bag of each signaling sendaisle of a upper website.It sends the signaling data bag of this website on first signaling sendaisle.Second of this website is sent to the last one signaling sendaisle by first of this website to the received each signaling data bag of penultimate signaling receiving channel；Abandon the last one received signaling data bag of signaling receiving channel.Next website is sent by the signaling data bag on each signaling sendaisle on this website.Signaling data bag gradually shifts forwarding, judges the quantity of ring website and the position of website according to the position in channel where the content and signaling data bag of signaling data bag in each signaling receiving channel.
Description
Technical field
The present invention relates to field of communication technology more particularly to the looped network signallings of a kind of recognizable website sequence and quantity
Method.
Background technique
Intercommunication signaling is needed between the website (looped network equipment) of looped network, the intercommunication signaling of major part looped network is by depositing at present
Store up what pass-through mode was realized.Store-and-forward mode are as follows: this website receives storage point after the signaling data bag of a website on looped network
Analysis；If being intended for our station point, signaling data bag to this cut-off；If not this website is issued, then signaling data bag
It is transmitted to next website.However, if the signaling data bag of first website is intended for the last one website, need by
Repeatedly storage forwarding gets to purpose website.If the signaling data bag that first website is sent is intended for next neighbor stations
Point, then it can reach quickly.
This store-and-forward mode has following disadvantage when ring website number is more:
(1) it can not judge website quantity and the sequence of each website in looped network, be unfavorable for the control of looped network.
(2) it can not judge the group delay of looped network.
(3) if this website detects that received signaling data bag is intended for oneself, the signaling data bag to our station
By therefore, existing looped network signalling mode can not make each website obtain the entire packet on entire looped network, inconvenient
It is monitored in looped network.
Summary of the invention
In view of the deficiencies of the prior art, the invention proposes the looped network signallings of a kind of recognizable website sequence and quantity
Method, the signaling data that (1) this method sends each website by several signaling sending and receiving channels being arranged successively of each website
Packet gradually displacement forwarding, can be according to the position in channel where the content and signaling data bag of signaling data bag in each signaling receiving channel
It sets come the position of the quantity and website that judge ring website, solves being not easy to detect and managing for website quantity in existing looped network
The problem of.(2) quantity in this method setting signaling sending and receiving channel is not less than the quantity of looped network website, and each every frame of website sends letter
A bit data of data packet is enabled, the data of this website that each website is sent can return to after looped network circulation
This website can all record the frame number sended and received when website receives and sends data.Therefore, the receiving frame of the data of return
Serial number, which subtracts, to be sent frame number and can obtain looped network group delay frame number, solves what the group delay of existing looped network looped network can not judge
Problem.(3) the online each website of this method middle ring is equality (reciprocity) on looped network.Each website can receive looped network
All data packets that other upper websites issue, solving existing looped network signalling mode can not make each website obtain entirely
Entire packet on looped network is not easy to the problem of monitoring.
To achieve the goals above, technical solution of the present invention is as follows:
The looped network signal transmission method of a kind of recognizable website sequence and quantity, looped network includes several for signaling data
Packet, broadcast data pack receiving and transmitting and the website of processing, each website are sequentially connected by circulation by transmission medium, and this method includes following step
It is rapid:
For each website in looped network, several signaling receiving channels and identical with signaling receiving channel quantity are set
Signaling sendaisle；Each signaling receiving channel is arranged successively, and each signaling sendaisle is arranged successively；The letter of each website
Enable the quantity of receiving channel identical, and the quantity of signaling receiving channel is not less than the sum of website in looped network.
Each letter that each signaling sendaisle of a upper website is sent respectively by each signaling receiving channel of this website
Data packet is enabled to be received one by one.
It sends this website signaling data bag to be sent on first signaling sendaisle of this website.
First of this website to the received each signaling data bag of penultimate signaling receiving channel is sent out one by one respectively
Second of this website is sent to the last one signaling sendaisle；And abandon the last one signaling receiving channel of this website
Received signaling data bag.
The each of next website is sent one by one respectively by each signaling data bag on each signaling sendaisle on this website
In signaling receiving channel.
The signaling data bag received by this website in each signaling receiving channel of this website is filtered, it is each to obtain this website
New received signaling data bag, is analyzed and processed for our station point in signaling receiving channel.
Further, each website in looped network is arranged several signaling receiving channels and receives with signaling logical
The identical signaling sendaisle of road quantity；Each signaling receiving channel is arranged successively, and each signaling sendaisle is arranged successively；
The quantity of the signaling receiving channel of each website is identical, and the quantity of signaling receiving channel is not less than the sum of website in looped network
Step, comprising:
The signalling communication time slot of identical quantity is distributed for each website in looped network；Each signalling communication time slot includes eight
Bit.
Each bit is a signaling receiving channel or a signaling sendaisle；Each signaling receiving channel and signaling
The each frame of sendaisle receives or sends the data of a bit of signaling data bag respectively.
Further, first signaling that the signaling data bag that this website is to be sent is sent to this website sends logical
Step on road, comprising:
Packet header and packet tail are added for this website present frame parallel signaling data packet to be sent.
Serial signaling data bag is converted by the parallel signaling data bag after addition packet header and packet tail.
CRC check is done to signaling data bag, and check results are inserted into before the end mark of signaling data bag.
Send a bit data of this website present frame signaling data bag to be sent to first signaling of this website
On sendaisle.
The transmission frame number for the data that minute book website present frame is sent, for calculating looped network group delay frame number.
Further, the signaling data bag includes the flag sequence for identifying signaling data bag starting and ending.
One bit data of the signaling data bag that this website present frame is to be sent is sent to first of this website
Step on signaling sendaisle, comprising:
Judge whether this website leaves unused；If it has, then replacing this website to work as with a bit data of continuous flag sequence
One bit data of previous frame signaling data bag to be sent.
Further, first signaling that the signaling data bag that this website is to be sent is sent to this website sends logical
Step on road, further includes:
It is received in signaling data bag according to the number of each signaling receiving channel of this website with each signaling receiving channel
Source address information determines position of each website on looped network, restores the sequential organization figure of each website in looped network.
Further, described to send this website for the received signaling data bag of this website l-th signaling receiving channel
On the L+1 signaling sendaisle；And abandon the step of the last one received signaling data bag of signaling receiving channel of this website
Suddenly, comprising:
The received each data of each signaling receiving channel present frame of this website are delayed into a bit respectively.
Cast out last a data.
It successively sends the other each except first signaling sendaisle of this website one by one by the remaining data delayed
On signaling sendaisle.
Further, the signaling data bag received in each signaling receiving channel for filtering this website, obtains this
New received signaling data bag in each signaling receiving channel of website, the step of being analyzed and processed for our station point, comprising:
To each signaling receiving channel of this website packet header of received each signaling data bag detect.
CRC check is done to the received each signaling data bag of each signaling receiving channel institute of this website.
According to each signaling receiving channel of this website received each signaling data bag destination address acquisition belong to our station
The signaling data bag and broadcast data packet of point.
The reception frame number of the received data of minute book website present frame.
Whether the data sent before judging this website return to this website；If it has, then according to the data of the return
It sends frame number and receives frame number and calculate looped network group delay frame number.
Further, serial signaling number is converted into the parallel signaling data bag by after addition packet header and packet tail
It is also comprised the steps of: later according to packet
Continuously occur being inserted into logical zero behind 5 logics 1 in serial signaling data bag.
Further, each signaling receiving channel to this website received each signaling data bag packet header carry out
It is also comprised the steps of: after detection
Remove the subsequent logical zero for continuously occurring 5 logics 1 in signaling data bag.
Beneficial effects of the present invention:
(1) signaling that this method sends each website by several signaling sending and receiving channels being arranged successively of each website
Data packet gradually shifts forwarding, can be according to channel where the content and signaling data bag of signaling data bag in each signaling receiving channel
Position judge the quantity of ring website and the position of website, realize detection and control to website quantity in looped network.
(2) quantity in this method setting signaling sending and receiving channel is not less than the quantity of looped network website, and each every frame of website sends letter
A bit data of data packet is enabled, the data of this website that each website is sent can return to after looped network circulation
This website can all record the frame number sended and received when website receives and sends data.Therefore, the receiving frame of the data of return
Serial number, which subtracts transmission frame number, can obtain looped network group delay frame number.
(3) the online each website of this method middle ring is equality (reciprocity) on looped network.Each website can receive
All data packets that other websites issue on looped network, so any one website can monitor the total data of ring transfers on network
Packet, convenient for monitoring.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of looped network of the invention.
Fig. 2 is flow diagram of the invention.
Fig. 3 is the principle signal that signaling data is forwarded in the signaling reception of a website, the displacement of sendaisle in the present invention
Figure.
Specific embodiment
With reference to the accompanying drawings and examples, the present invention is further explained.
As shown in Figure 1, being the structural schematic diagram of looped network, looped network includes several for signaling data bag, broadcast data packet
The website of transmitting-receiving and processing.Each website is sequentially connected by circulation by transmission medium.Transmission medium is E1 line.
As shown in Fig. 2, the looped network signal transmission method of a kind of recognizable website sequence and quantity, comprising the following steps:
S1: several signaling receiving channels and identical as signaling receiving channel quantity are set for each website in looped network
Signaling sendaisle；Each signaling receiving channel is arranged successively, and each signaling sendaisle is arranged successively；Each website
The quantity of signaling receiving channel is identical, and the quantity of signaling receiving channel is not less than the sum of website in looped network.
S2: each signaling sendaisle of a upper website is sent respectively by each signaling receiving channel of this website each
Signaling data bag is received one by one.
S3: it sends this website signaling data bag to be sent on first signaling sendaisle of this website.
S4: respectively one by one by first of this website to the received each signaling data bag of penultimate signaling receiving channel
Second of this website is sent to the last one signaling sendaisle；And it abandons the last one signaling of this website and receives and lead to
The received signaling data bag in road.
In the present invention, the signaling data bag transmission between each signaling receiving channel and each signaling sendaisle of each website is adopted
With displacement pass-through mode.If displacement is not used to forward, each website needs to send this using different signaling sendaisles
It stands signaling data bag to be sent, rather than unified uses first signaling sendaisle.For example first website uses first
Sendaisle sends the signaling data bag of our station, remaining signaling sendaisle directly forwards the signaling number from signaling receiving channel
According to packet；Second website sends the signaling data bag of our station using second signaling sendaisle, remaining signaling sendaisle is straight
Switch through the signaling data bag sent from signaling receiving channel.This will lead to: (1), looped network be added new site when, new site is not known
Which signaling sendaisle oneself should be used to send the signaling data bag of this website.(2) if, two websites used it is identical
Signaling sendaisle send the signaling data bag of this website, then the signaling data bag that the two two websites issue cannot reach
All websites.(3), each website can not be by that can judge on looped network only by the signaling data bag for receiving oneself transmission
Website quantity.(4), since each website sends the signaling data bag of our station using different signaling sendaisles respectively,
It is not reciprocity between each website, it is unfavorable for managing.
For signaling data bag displacement forwarding, the received signaling number of the last one signaling receiving channel of this website is abandoned
According to packet, life termination of the signaling data bag on looped network is realized, avoids signaling data bag is endless on looped network from going around in circles.
S5: next website is sent one by one respectively by each signaling data bag on each signaling sendaisle on this website
In each signaling receiving channel.
S6: the signaling data bag received by this website in each signaling receiving channel of this website is filtered, our station is obtained
New received signaling data bag, is analyzed and processed for our station point in each signaling receiving channel of point.
Each website, which every time prolongs signaling receiving channel received signaling data bag, to be sent by signaling behind the latter channel
Channel is sent to the next stop, and each signaling data bag after delaying a last signaling receiving channel up to can just be dropped, therefore,
In the case that website sum is less than the quantity of the signaling receiving channel of website in looped network, the signaling data bag of each website transmission
A circle will be circulated beyond in looped network, the signaling receiving channel of the certain site of looped network will be containing having received and processed
Signaling data bag avoids so filtering the signaling data bag received in each signaling receiving channel of this website to signaling number
It is reprocessed according to packet.S6 does not influence S4 to the filtration treatment of signaling message, that is to say, that no matter each letter of this website our station point
Enable receiving channel whether there is or not the signaling data bag received is filtered out, in addition to the signaling of the last one signaling receiving channel of this website
Outside data packet is directly given up, the signaling data bag in each signaling receiving channel of remaining this website our station point can all pass to our station
On each signaling sendaisle of this website of point.
Specifically, S1 includes:
The signalling communication time slot of identical quantity is distributed for each website in looped network；Each signalling communication time slot includes eight
Bit；Each bit is a signaling receiving channel or a signaling sendaisle；Each signaling receiving channel and signaling
The each frame of sendaisle receives or sends the data of a bit of signaling data bag respectively.
Each website is used for signalling communication using the time slot of identical quantity.The number of time slots that signalling communication uses is more, branch
The website number held is also more.Relational expression are as follows: the signaling of each time slot of website number=signalling communication number of time slots * of support connects
Receive the number in (or transmission) channel.
Since the total number of timeslots of E1 line is fixed, so the number of time slots that signalling communication uses is more, voice communication is left for
Number of time slots is fewer.
The signaling data bag format of looped network is as follows:
Signaling data bag successively includes start frame, destination address, source address, packet serial number, the information content, CRC check, end
Frame；Wherein, start frame, destination address, the packet header that source address is signaling data bag, CRC check, end frame are signaling data bag
Packet tail.
0x7E, DstAddr, SrcAddr, FrameNum, DATA1, DATA2 ..., DATAn, CrcHigh,
CrcLow, 0x7E.
0x7E flag sequence, data frame starting and ending mark.
DstAddr destination address, the device address of received data packet, by software, specified (0x0 retains, and 0xFF is broadcast ground
Location).
SrcAddr source address sends the device address of data packet, and by software, specified (0x0 retains, and 0xFF is broadcast ground
Location).
FrameNum packet serial number, one frame data packet serial number of every transmission adds one, for rejecting repeating frame and loss packet test.
DATA1, DATA2 ..., DATAn message data content.
CrcHigh, CrcLow are CRC CCITT verification, participate in the data of verification from DstAddr to DATAn.
Specifically, S2 includes:
Each signaling sendaisle present frame of a upper website is sent respectively by each signaling receiving channel of this website
The data of a bit received one by one.
Specifically, S3 includes:
S31: packet header and packet tail are added for this website present frame parallel signaling data packet to be sent.
S32: serial signaling data bag is converted by the parallel signaling data bag after addition packet header and packet tail；And it is going here and there
Continuously occur being inserted into logical zero behind 5 logical ones in capable signaling data bag.
The head and tail portion of data packet are found from serial data stream for convenience, we borrow inserting for HDLC protocol and 0 delete 0
Way, specifically:
(1) " 0 " position insertion/deletion: as described above, HDLC protocol regulation is mark with 01111110 (i.e. 0x7E flag sequence)
Will byte, but it is also entirely possible in information field the character of same mode, in order to which it is distinguished with flag byte,
So taking the insertion of " 0 " position and deleting technique.The specific practice is transmitting terminal when sending all information (in addition to flag bytes),
As long as encountering continuous 5 " 1 ", it is automatically inserted into one " 0 ", when flag byte (is removed) when receiving data if continuous in receiving end
Receive 5 " 1 ", just automatically by thereafter one " 0 " delete, be by restore information it is original in the form of.The insertion of this " 0 " position and
Deletion process is automatically performed by hardware.
(2) HDLC abnormal ending: if occurring mistake in transmission process, HDLC protocol often uses abnormal ending (Abort)
Character, or cancel this frame for out-of-service sequence.In high-level data link control, 7 continuous " 1 " by as failure character.Certainly exist
" 0 " position insertion/deletion technology is not used in out-of-service sequence.HDLC protocol regulation, does not allow data break occur within a frame.
Between two frames, transmitter can continuous output identification character string, continuous high level can also be exported, it is referred to as the free time
(Idle) signal.
S33: CRC check is done to signaling data bag, and check results are inserted into before the end mark of signaling data bag.
S34: first of this website is sent by a bit data of this website present frame signaling data bag to be sent
On signaling sendaisle.
Specifically, S34 includes:
Judge whether this website leaves unused；If it has, then replacing this website to work as with a bit data of continuous flag sequence
One bit data of previous frame signaling data bag to be sent.
Website on looped network may not send signaling data bag, but the idle every frame of website needs in the sometime free time
A bit data is sent to replace the position of signaling data bag, guarantees that looped network delay is fixed.
Flag sequence 0x7E deletes 0 way without using inserting 0.When the website free time, flag sequence 0x7E is continuously transmitted, to there is number
When according to sending, the time (send and need the 1ms time without using the 0x7E for 0 technology of inserting) for sending 0x7E is saved.When the website free time,
There is no signaling data bag transmission, and continuously transmits 0x7E.In this way, can directly start to send when having signaling data bag
The actual transfer rate of communication can be improved in DstAddr.When website receives data, allow to receive continuous " without using 0 technology of inserting "
0x7E；When receiving the 0x7E data of non-" without using 0 technology of inserting ", show the content for receiving signaling data bag.
S35: signaling data bag is received according to the number of each signaling receiving channel of this website and each signaling receiving channel
In source address information determine position of each website on looped network, restore the sequential organization figure of each website in looped network.
S36: the transmission frame number for the data that minute book website present frame is sent, for calculating looped network group delay frame number.
As soon as the every data for sending frame to the next stop of each website, carry out a frame counter to add one, the every frame of minute book website
The frame number when transmission of data.
Signaling data bag includes empty signaling data bag and useful signaling data bag, first signaling sendaisle of each website
Each frame sends a bit data of empty signaling data bag or useful signaling data bag to next website.
Specifically, S4 includes:
S41: the received each data of each signaling receiving channel present frame of this website are delayed into a bit respectively；
S42: cast out last a data；
S43: successively send the remaining data delayed to one by one its for removing first signaling sendaisle of this website
On its each signaling sendaisle.
Specifically, S6 includes:
S61: to each signaling receiving channel of this website packet header of received each signaling data bag detect, it is abnormal whole
Only detection, normal termination detection；Remove the subsequent logical zero for continuously occurring 5 logical ones in signaling data bag.
S62: CRC check is done to the received each signaling data bag of each signaling receiving channel institute of this website.
S63: according to each signaling receiving channel of this website received each signaling data bag destination address acquisition belong to
The signaling data bag and broadcast data packet of this website.
S64: the reception frame number of the received data of minute book website present frame.
As soon as a station sends the data of frame in each every reception of website, another frame counter is carried out to add one, minute book website
The frame number when reception of every frame data.
S65: whether the data sent before judging this website return to this website；If it has, then according to the number of the return
According to transmission frame number and receive frame number calculate looped network group delay frame number.
The data of this website that each website is sent can return to this website after looped network circulation, and website connects
When receiving and sending data, the frame number sended and received can be all recorded, therefore, the reception frame number of the data of return subtracts transmission frame
Serial number can obtain looped network group delay frame number.
As shown in figure 3, setting the number of timeslots of each website as 4.Each each frame of time slot receives and dispatches the signaling of a byte
Data packet, i.e., the signaling data bag of each each frame transmitting-receiving of website position 32 bits (bit).Every a bit are received as a signaling
Channel is sent out, is divided into 32 signaling receiving and transmission channels for this 32bit.The number in 32 signaling receiving and transmission channels is 00 to 31.Each station
Point uses signaling sendaisle of starting bit of first sending time slots as the newest signaling data bag of this website.
Each website receives the signaling data bag in 32 signaling receiving and transmission channels at a upper station, and will postpone one receiving data
A bit is sent to next website, and the data of the last one receiving channel are abandoned.Each website needs to handle 32 signalings
The data of the data of receiving channel and 1 sendaisle, the data in 31 channels of transparent transmission.
32 signaling sendaisles of this website form are as follows: signaling sendaisle 00 is that the newest signaling transmission of this website is logical
Road；The signaling data bag of signaling sendaisle 01 comes from this website signaling receiving channel 00；The signaling number of signaling sendaisle 02
This website signaling receiving channel 01 is come from according to packet；And so on, the signaling data bag of signaling sendaisle 31 is believed from this website
Enable receiving channel 30.
Each signaling receiving channel and each frame of signaling sendaisle transmit 1bit signaling data, and transmission rate per second is
8Kbps。
In this way, what the signaling receiving channel 00 of website 1 received is the letter from website 5 in looped network as shown in Figure 1
Data packet is enabled, what the signaling receiving channel 01 of website 1 received is the signaling data bag from website 4, and the signaling of website 1 receives
What channel 02 received is the signaling data bag from website 3, and what the signaling receiving channel 03 of website 1 received is from website
2 signaling data bag, what the signaling receiving channel 04 of website 1 received is the signaling data bag from website 1 (this website).
What the signaling receiving channel 05 of website 1 received is still the signaling data bag from website 5, this signaling data bag
The late time of looped network group delay when only than being received by signaling receiving channel 00.
Similarly, what the signaling receiving channel 06 of website 1 received is the signaling data bag from website 4, this signaling number
According to packet only than being received the late time of looped network group delay when channel 1 receives.And so on.
Thus, it will be seen that in 32 website full configuration states, i.e., the signaling of the sum and each website of website in looped network
When the quantity of transceiver channel is identical, what signaling receiving channel 31 received is the signaling data from this website our station point previous frame
Packet.Signaling receiving channel 31 is the last one signaling receiving channel, and received signaling data bag is directly dropped.Other 31 letters
Enable that receiving channel receives is the signaling data bag from other 31 websites respectively.
And can be seen that looped network in website sum be less than each website signaling receiving and transmission channel quantity when, Mei Gezhan
The total signaling receiving channel of point will receive identical signaling data bag.At this point, each station need to only filter out these duplicate signaling numbers
It is analyzed and processed according to packet, and to unduplicated signaling data bag.
Since the quantity of the signaling receiving channel of each website is not less than the sum of website in looped network, each website ensure that
The signaling data bag of transmission can reach on website all on looped network.
When total website is N (N≤32), each website issues a signaling data bag, can be in N-1 signaling receiving channel
Receive the signaling data bag (certainly, other websites also will receive this signaling data bag on looped network) of this website transmission, then (x*
) -1 N [x=1,2 ...] signaling receiving channel (if (x*N) -1 < 32) can also receive the data packet of this website transmission.If every
The signaling data that a website is sent includes our station point identification information (than if any a unique Site ID), then the looped network has this
The advantages of sample:
1, according to receive this website send signaling data bag can assess looped network communication it is whether normal.What if our station was sent
Signaling data bag can be received again by our station, then prove that looped network is normal, and otherwise looped network is abnormal.
2, it can be evaluated on looped network according to the minimum signaling receiving channel number for receiving the signaling data bag that this website is sent
Website quantity.(in the present embodiment because signaling receiving channel number from 0 meter, if receive this website transmission signaling data
The minimum signaling receiving channel of packet is the 8th channel, then one shares 9 websites on looped network).In this way, this station for acquiring looped network website
When total, the response of other websites is needed not rely on.
3, pass through identification information in the time slot channel number and received data packet of received signaling data bag (such as website
ID), the sequence of each website on looped network can be accurately identified.
4, ring website quantity or website sequence change, and all websites can quick sensing.
5, the time (value of frame count) that this website receives signaling data bag subtracts this website and sends this signaling data bag
Time (value of frame count) be equal to looped network group delay.
6, the time difference that the signaling data bag that each website of looped network issues reaches all websites on ring is no more than looped network group delay
Time.
7, after ring environment determines, send signaling data bag arrive receive the delay of data packet substantially with signaling number
It is related according to the length of packet.
8, increase a website in looped network, signaling data bag all on looped network can be collected into, facilitate monitoring.
9, the Source Site identification information (Site ID) and purpose website in the signaling data bag packet header sent according to each website
Identification information (Site ID) may be implemented to filter out the signaling that purpose website identification information (Site ID) is this website in receiving side
Data packet and broadcast data packet abandon other signaling data bags to mitigate the excessive pressure of system processing received data packet quantity.
What has been described above is only a preferred embodiment of the present invention, and present invention is not limited to the above embodiments.It is appreciated that this
Other improvements and changes that field technical staff directly exports or associates without departing from the basic idea of the present invention
It is considered as being included within protection scope of the present invention.
Claims (9)
1. the looped network signal transmission method of a kind of recognizable website sequence and quantity, the looped network includes several for signaling number
According to packet, broadcast data pack receiving and transmitting and the website of processing, each website is sequentially connected by circulation by transmission medium, the feature of the method
It is, comprising the following steps:
For each website in looped network, several signaling receiving channels and signaling identical with signaling receiving channel quantity are set
Sendaisle；Each signaling receiving channel is arranged successively, and each signaling sendaisle is arranged successively；The signaling of each website connects
The quantity for receiving channel is identical, and the quantity of signaling receiving channel is not less than the sum of website in looped network；
Each signaling number that each signaling sendaisle of a upper website is sent respectively by each signaling receiving channel of this website
It is received one by one according to packet；
It sends this website signaling data bag to be sent on first signaling sendaisle of this website；
First of this website to the received each signaling data bag of penultimate signaling receiving channel is sent to one by one respectively
On second of this website to the last one signaling sendaisle；And abandon the reception of the last one signaling receiving channel of this website
Signaling data bag；
Send each signaling data bag on each signaling sendaisle on this website to one by one respectively each signaling of next website
In receiving channel；
The signaling data bag received by this website in each signaling receiving channel of this website is filtered, each signaling of this website is obtained
New received signaling data bag, is analyzed and processed for our station point in receiving channel；
Wherein, judge according to the position in channel where the content and signaling data bag of signaling data bag in each signaling receiving channel
The quantity of ring website and the position of website；When website receives and sends data, the frame number sended and received is recorded.
2. the looped network signal transmission method of recognizable website sequence according to claim 1 and quantity, it is characterised in that:
Several signaling receiving channels and identical with signaling receiving channel quantity are arranged in each website in looped network
Signaling sendaisle；Each signaling receiving channel is arranged successively, and each signaling sendaisle is arranged successively；The letter of each website
Enable the quantity of receiving channel identical, and the quantity of signaling receiving channel is not less than the step of the sum of website in looped network, comprising:
The signalling communication time slot of identical quantity is distributed for each website in looped network；Each signalling communication time slot includes 8 bits
Position；Each bit is a signaling receiving channel or a signaling sendaisle；Each signaling receiving channel and signaling are sent
The each frame in channel receives or sends the data of a bit of signaling data bag respectively.
3. the looped network signal transmission method of recognizable website sequence according to claim 2 and quantity, it is characterised in that:
The signaling data bag that this website is to be sent is sent to the step on first signaling sendaisle of this website, packet
It includes:
Packet header and packet tail are added for this website present frame parallel signaling data packet to be sent；
Serial signaling data bag is converted by the parallel signaling data bag after addition packet header and packet tail；
CRC check is done to signaling data bag, and check results are inserted into before the end mark of signaling data bag；
First signaling that one bit data of this website present frame signaling data bag to be sent is sent to this website is sent
On channel；
The transmission frame number for the data that minute book website present frame is sent, for calculating looped network group delay frame number.
4. the looped network signal transmission method of recognizable website sequence according to claim 3 and quantity, it is characterised in that:
The signaling data bag includes the flag sequence for identifying signaling data bag starting and ending；
One bit data of the signaling data bag that this website present frame is to be sent is sent to first signaling of this website
Step on sendaisle, comprising:
Judge whether this website leaves unused；If it has, then replacing this website present frame with a bit data of continuous flag sequence
One bit data of signaling data bag to be sent.
5. the looped network signal transmission method of recognizable website sequence according to claim 3 and quantity, it is characterised in that:
The L+1 signaling for sending this website for the received signaling data bag of this website l-th signaling receiving channel is sent out
It send on channel；And the step of abandoning this website the last one signaling receiving channel received signaling data bag, comprising:
The received each data of each signaling receiving channel present frame of this website are delayed into a bit respectively；
Cast out last a data；
By the remaining data delayed successively be sent to one by one this website except first signaling sendaisle other each signalings
On sendaisle.
6. the looped network signal transmission method of recognizable website sequence according to claim 3 and quantity, it is characterised in that:
The signaling data bag received in each signaling receiving channel for filtering this website obtains each signaling of this website and receives
New received signaling data bag in channel, the step of being analyzed and processed for our station point, comprising:
To each signaling receiving channel of this website packet header of received each signaling data bag detect；
CRC check is done to the received each signaling data bag of each signaling receiving channel institute of this website；
According to each signaling receiving channel of this website received each signaling data bag destination address acquisition belong to this website
Signaling data bag and broadcast data packet；
The reception frame number of the received data of minute book website present frame；
Whether the data sent before judging this website return to this website；If it has, then according to the transmission of the data of the return
Frame number and reception frame number calculate looped network group delay frame number.
7. the looped network signal transmission method of recognizable website sequence according to claim 3 and quantity, it is characterised in that:
The signaling data bag that this website is to be sent is sent to the step on first signaling sendaisle of this website, also
Include:
With receiving the source in signaling data bag according to the number of each signaling receiving channel of this website and each signaling receiving channel
Location information determines position of each website on looped network, restores the sequential organization figure of each website in looped network.
8. the looped network signal transmission method of recognizable website sequence according to claim 6 and quantity, it is characterised in that:
It is also wrapped after the parallel signaling data bag by after addition packet header and packet tail is converted into serial signaling data bag
Containing following steps:
Continuously occur being inserted into logical zero behind 5 logics 1 in serial signaling data bag.
9. the looped network signal transmission method of recognizable website sequence according to claim 8 and quantity, it is characterised in that:
Each signaling receiving channel to this website received each signaling data bag packet header detect after also wrap
Containing following steps:
Remove the subsequent logical zero for continuously occurring 5 logics 1 in signaling data bag.
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