CN109104700A - A kind of more mesh method of multicasting being suitable for narrowband wireless communication network - Google Patents
A kind of more mesh method of multicasting being suitable for narrowband wireless communication network Download PDFInfo
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- CN109104700A CN109104700A CN201811178693.8A CN201811178693A CN109104700A CN 109104700 A CN109104700 A CN 109104700A CN 201811178693 A CN201811178693 A CN 201811178693A CN 109104700 A CN109104700 A CN 109104700A
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- network controller
- message
- data
- address
- multicasting
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
-
- 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
- H04L45/74—Address processing for routing
- H04L45/745—Address table lookup; Address filtering
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
- H04W4/08—User group management
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The invention discloses a kind of more mesh method of multicasting for being suitable for narrowband wireless communication network, its method and step includes: to receive multicast message by source point network controller, analyze user list member IP in multicast list, then table of query and routing is selected according to routing principle to each IP address, and record the channel type and exit address of next-hop, channel type and address according to record to each IP, the IP for belonging to the same next-hop interface is classified as one kind and again encapsulated message, source point network controller for each class individually send message to destination IP network controller.This method by using more mesh multicasts mode, can effectively save channel resource, guarantee the reliable transmission of business.
Description
Technical field
The present invention relates to wireless communication technology field, more particularly, to a kind of narrowband wireless communication network that is suitable for
More mesh method of multicasting.
Background technique
Narrowband wireless communication network has the characteristics that high dynamic, Weak link, high time delay, narrow bandwidth, low reliable, business transmission
When generally have the modes such as unicast, multicast, broadcast.
It is that IP-based business enters network based on unicast traffic transmission, network is indexed based on the destination address in IP
Routing forwarding realizes business forwarding, disadvantage are as follows: if the same business needs to issue multiple nodes, need according to each node
Purpose IP address table of query and routing, according to routing be forwarded, multiple nodes just need to send multiple data packets.
It needs to run multicast protocol based on multicast service, multicast forwarding tree is constructed, when there is business to need to transmit, according to group
Routing and forwarding strategy are broadcast, optimal Multicast Routing is selected from multicast routing table, and be issued to multicast forward table, is based on multicast
Forwarding table realizes business forwarding, disadvantage are as follows: transmission needs to run multicast routing protocol, uses diffusion, beta pruning and grafting mechanism
Safeguard multicast forwarding tree, wireless network bandwidth is narrow, and the maintenance of agreement needs to consume bandwidth, waste limited bandwidth resources.
Based on broadcast traffic transmissions, broadcast transmission, disadvantage are carried out over the wireless channel are as follows: if the same business needs
Multiple nodes are given, if this multiple radio node belongs to different wireless sub networks, need to carry out in all wireless sub networks
Broadcast, all nodes for belonging to these wireless sub networks can all receive this business, and from a security standpoint, some nodes are in fact simultaneously
It does not need to receive this business.
Summary of the invention
The present invention in order to overcome at least one of the drawbacks of the prior art described above, provides one kind and is suitable for narrowband wireless communication
More mesh method of multicasting of network, the technology can make full use of the high efficiency of transmission of limited Internet resources finishing service.
The present invention is directed to solve above-mentioned technical problem at least to a certain extent.
In order to solve the above technical problems, technical scheme is as follows:
S1: multicast message is received by source point network controller, analyzes user list member IP in multicast list；
S2: selecting table of query and routing according to routing principle to each IP address, and records the channel type of next-hop and go out
Port address；
S3: the IP for belonging to the same next-hop interface is classified as by channel type and address according to record to each IP
One kind and again encapsulated message；
S4: source point network controller individually sends message to destination IP for each class.
Preferably, source point network controller described in the S4 only sends a message to each class.
Preferably, the format of the message in the S3 includes DstNum field, DstIP field, Data field；Wherein
DstNum indicates destination IP number；DstIP indicates purpose IP address；Data indicates the message data for needing to send.
Preferably, it is a byte that the DstNum, which is data volume, and the data volume of DstIP is 4 bytes counted multiplied by IP
Number, the data volume of Data are to send the total amount of data of message.
Compared with prior art, the beneficial effect of technical solution of the present invention is: the present invention realizes multicast functionality by unicast,
Multicast member information, and the message received from the same wireless channel are determined by source point, it will not be on this wireless channel
It is forwarded, realizes the reliable transmission of business, and save channel resource.
Detailed description of the invention
Fig. 1 is flow chart of the invention.
Fig. 2 is the embodiment of the present invention 1.
Fig. 3 is the embodiment of the present invention 2.
Fig. 4 is the embodiment of the present invention 3.
Specific embodiment
The attached figures are only used for illustrative purposes and cannot be understood as limitating the patent；
The following further describes the technical solution of the present invention with reference to the accompanying drawings and examples.
Embodiment 1
For flow chart of the invention, it is mainly comprised the steps that Fig. 1
S1: multicast message is received by source point network controller, analyzes user list member IP in multicast list；
S2: selecting table of query and routing according to routing principle to each IP address, and records the channel type of next-hop and go out
Port address；
S3: the IP for belonging to the same next-hop interface is classified as by channel type and address according to record to each IP
One kind and again encapsulated message；
S4: source point network controller individually and only sends a message to destination IP for each class.
In a particular embodiment:
Network topology is as shown in Figure 2: network controller A, B, C and D belong to wireless sub network 1.When connection network controller A's
When user needs to send data to the user of network controller B, C, D, network controller A query routing, discovery passes through wireless communication
Road 1 can reach network controller B, C and D, be classified as a kind of by B, C and D and send after encapsulated message again, network controller A
The data format sent to network controller B, C, D is as follows:
Wherein DstNum indicates destination IP number；DstIP indicates purpose IP address；Data indicates the message number for needing to send
According to.
Network controller A only needs once to be sent in wireless channel 1.Network controller B, C, D can be received
This data packet.By taking network controller B as an example, network controller B receives message from wireless 1 and is parsed, and finds destination
There are also C, D for location.After query routing, it is still necessary to be sent by wireless 1, but because this message is received from wireless channel 1
's.Network controller C, D are similarly.
Embodiment 2
Network topology is as shown in Figure 3: wherein network controller A, B, C belongs to wireless sub network 1；Network controller A, D belong to
Wireless sub network 2.
When the user for connecting network controller A needs to send data to the user of network controller B, C, D, network-control
Device A query routing, discovery can reach network controller B, C by wireless channel 1, can reach network by wireless channel 2
D is classified as a kind of and again after encapsulated message, net by controller D, therefore be classified as a kind of by B, C and send after encapsulated message again
The data format that network controller A is sent to network controller B, C is as follows:
The data format that network controller A is sent to network controller D is as follows:
| Field identification | Field data amount | Explanation | Numerical value |
| DstNum | 1 byte | Destination IP number | 1 |
| DstIP | 4 bytes | Purpose IP address | 192.192.4.1 |
| Data | N byte | Data |
Network controller A needs are respectively once sent in wireless channel 1 and wireless channel 2.Network controller B, C, D are equal
Data packet can be received.By taking network controller B as an example, network controller B receives message from wireless channel 1 and is parsed, and finds mesh
There are also C for address.After query routing, it is still necessary to be sent by wireless channel 1, but because this message is from wireless channel 1
It receives, will no longer be forwarded at this time.Network controller C is similarly.Network controller D receives message and is parsed, discovery
Destination address only has oneself, will no longer be forwarded.
Embodiment 3
Network topology is as shown in Figure 4: where network controller A, B belong to wireless sub network 1；Network controller A, C belong to nothing
Line subnet 2；Network controller A, D belong to wireless sub network 3.
When the user for connecting network controller A needs to send data to the user of network controller B, C, D, network-control
Device A query routing, discovery can reach network controller B by wireless channel 1, can reach network control by wireless channel 2
Device C processed can reach network controller D by wireless channel 3, therefore B, C, D are individually for a kind of and encapsulated message again
After send, the data format that network controller A is sent to network controller B is as follows:
| Field identification | Field data amount | Explanation | Numerical value |
| DstNum | 1 byte | Destination IP number | 1 |
| DstIP | 4 bytes | Purpose IP address | 192.192.2.1 |
| Data | N byte | Data |
The data format that network controller A is sent to network controller C is as follows:
| Field identification | Field data amount | Explanation | Numerical value |
| DstNum | 1 byte | Destination IP number | 1 |
| DstIP | 4 bytes | Purpose IP address | 192.192.3.1 |
| Data | N byte | Data |
The data format that network controller A is sent to network controller D is as follows:
| Field identification | Field data amount | Explanation | Numerical value |
| DstNum | 1 byte | Destination IP number | 1 |
| DstIP | 4 bytes | Purpose IP address | 192.192.4.1 |
| Data | N byte | Data |
Network controller A needs are respectively once sent in wireless channel 1, wireless channel 2 and wireless channel 3.Network control
Device B, C, D processed can receive data packet.By taking network controller B as an example, network controller B receives message from wireless 1 and is parsed,
It was found that destination address only has oneself, will no longer be forwarded.Network controller C, D are similarly.
Three above-mentioned embodiments are before the network operation, all parameters such as network address of each website of unified planning,
Wherein ultrashort wave radio set transmission rate is 9.6kbit/s；Website is network controlled device and ultrashort wave radio set composition, network control
Device processed realizes the processing of agreement, realizes transmitting-receiving by general ultrashort wave radio set.
Obviously, the above embodiment of the present invention be only to clearly illustrate example of the present invention, and not be pair
The restriction of embodiments of the present invention.For those of ordinary skill in the art, may be used also on the basis of the above description
To make other variations or changes in different ways.There is no necessity and possibility to exhaust all the enbodiments.It is all this
Made any modifications, equivalent replacements, and improvements etc., should be included in the claims in the present invention within the spirit and principle of invention
Protection scope within.
Claims (4)
1. a kind of more mesh method of multicasting for being suitable for narrowband wireless communication network, it is characterised in that:
S1: multicast message is received by source point network controller, analyzes user list member IP in multicast list；
S2: table of query and routing is selected according to routing principle to each IP address, and records channel type and the export place of next-hop
Location；
S3: the IP for belonging to the same next-hop interface is classified as one kind by channel type and address according to record to each IP
And encapsulated message again；
S4: source point network controller individually sends message to destination IP for each class.
2. a kind of more mesh method of multicasting for being suitable for narrowband wireless communication network according to claim 1, it is characterised in that:
Source point network controller described in the S4 only sends a message to each class.
3. a kind of more mesh method of multicasting for being suitable for narrowband wireless communication network according to claim 1, it is characterised in that:
The format of message in the S3 includes DstNum field, DstIP field, Data field；Wherein DstNum indicates destination IP
Number；DstIP indicates purpose IP address；Data indicates the message data for needing to send.
4. a kind of more mesh method of multicasting for being suitable for narrowband wireless communication network according to claim 3, it is characterised in that:
The DstNum is that data volume is a byte, and the data volume of DstIP is 4 byte numbers counted multiplied by IP, the data volume of Data
For the total amount of data for sending message.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112423341A (en) * | 2020-10-23 | 2021-02-26 | 中国电子科技集团公司第七研究所 | SDN southbound interface control method suitable for condition of limited air-based node resources |
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Inventor after: Zhang Jie Inventor after: Xie Jin Inventor after: Zhang Chunsheng Inventor after: Wu Qing Inventor after: Zhang Yunyong Inventor before: Zhang Jie Inventor before: Xie Jin Inventor before: Zhang Chunsheng Inventor before: Wu Qing |
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Application publication date: 20181228 |