CN106922008A - A kind of IPv6 wireless sense network multi-path transmission methods based on RPL Routing Protocols - Google Patents

A kind of IPv6 wireless sense network multi-path transmission methods based on RPL Routing Protocols Download PDF

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Publication number
CN106922008A
CN106922008A CN201710129767.8A CN201710129767A CN106922008A CN 106922008 A CN106922008 A CN 106922008A CN 201710129767 A CN201710129767 A CN 201710129767A CN 106922008 A CN106922008 A CN 106922008A
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message
number
node
multipath
head
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CN201710129767.8A
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Chinese (zh)
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王恒
王亚东
蒲宬亘
王平
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重庆邮电大学
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W40/00Communication routing or communication path finding
    • H04W40/02Communication route or path selection, e.g. power-based or shortest path routing
    • H04W40/04Communication route or path selection, e.g. power-based or shortest path routing based on wireless node resources
    • H04W40/10Communication route or path selection, e.g. power-based or shortest path routing based on wireless node resources based on available power or energy
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W84/00Network topologies
    • H04W84/18Self-organising networks, e.g. ad-hoc networks or sensor networks
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02DCLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THIR OWN ENERGY USE
    • Y02D70/00Techniques for reducing energy consumption in wireless communication networks

Abstract

The present invention relates to a kind of IPv6 wireless sense network multi-path transmission methods based on RPL Routing Protocols, belong to wireless sensor network technology field.This method is in the 6LoWPAN wireless sense networks based on IPv6 technologies, the father node set generated when being built and route according to the jumping figure value and residue energy of node of source node to aggregation node using RPL agreements, the Rank value of reliability requirement and father node according to message is distributed on multiple RPL father nodes after message is replicated into many parts and forwards.In order that 6LoWPAN network support multipath message transmissions, this method designs a new 6LoWPAN head --- multipath head in adaptation layer, for message to be copied into mulitpath transmission and the last elimination of message.The present invention can improve the reliability of message transmissions in network by increasing redundant path during message transmissions, and consider residue energy of node and the hop count to aggregation node when transmission path is selected, and can effectively extend network lifetime.

Description

A kind of IPv6 wireless sense network multi-path transmission methods based on RPL Routing Protocols

Technical field

The invention belongs to wireless sensor network technology field, it is related to a kind of IPv6 based on RPL Routing Protocols wirelessly to pass Sense net multi-path transmission method.

Background technology

Wireless sensor network is always treated as current international research focus, be technology of Internet of things core research contents it One, perception, collection, treatment and the transmission of physical message can be realized, it is widely used in industry, environmental monitoring, medical treatment and military affairs etc. Many aspects.

IPv6 technologies are introduced to wireless sensor network, each sensor node can be made to have a unique IPv6 ground Location, realizes node side and is communicated with the IP of host side, and the application on internet successfully is extended into wireless sensor network.And And, wireless sensor network is had into popularization and applicability higher with the 6LoWPAN networks that IPv6 technologies are combined, it is more Address space meet that deployment is extensive, the need for high density Low rate wireless personal area network equipment.But due in 6LoWPAN networks Sensor node has the severe defect of low disposal ability, finite energy, communication environment so that easily lost in message transmissions Bag phenomenon, so as to cause bust this.In order to increase message communication reliability, message transmissions performance be improved, in 6LoWPAN networks Middle introducing multipath message transmissions technology is just particularly important.

Various multi-path routing technologies having been proposed in wireless sensor network field at present, though can set up a plurality of Transmission path supplies message transmissions, but can not directly improve and be applied to 6LoWPAN networks.It is a kind of suitable for 6LoWPAN to propose The multi-path transmission method of network, is realized using existing Routing Protocol.RPL is assisted as the route by ietf standard View, the extensive use in 6LoWPAN networks.The a series of new mechanism of RPL Design of Routing Protocol is one for wireless sensing Network, efficient distance vector protocols, node constructs a directed acyclic graph by exchanging distance vector, and being transmitted with it can be with Multipath is avoided to form loop.But using only a transmission paths in message transmission procedure, easily there is message transmissions failure Situation, reduces the transmission reliability of network.

Requirement in order to ensure wireless sensor network to message transmissions reliability, for may go out in 6LoWPAN networks The situation of existing message transmissions failure, based on RPL Routing Protocols, the present invention propose a kind of IPv6 based on RPL Routing Protocols without Line Sensor Network multi-path transmission method, it is intended to improve the reliability of 6LoWPAN network messages transmission.

The content of the invention

In view of this, it is an object of the invention to provide a kind of IPv6 wireless sense network multichannels based on RPL Routing Protocols Footpath transmission method, the method is built according to the jumping figure value and residue energy of node of node to aggregation node using RPL agreements and route The father node set of Shi Shengcheng, sets up to a plurality of message transmissions path of multiple father nodes.The method can solve the problem that message transmissions The problem of failure, effectively improves message transmission success rate end to end, improves the transmission reliability of network.

To reach above-mentioned purpose, the present invention provides following technical scheme:

A kind of IPv6 wireless sense network multi-path transmission methods based on RPL Routing Protocols, in the method, source node hair Deliver newspaper text when, first determine transmitting message needed for number of passes, then by the magnitude relationship between Rank value be each father section Point distributes the Rank value corresponding number of passes, and Rank value is by RPL according to residue energy of node value and the hop count to aggregation node Value is calculated, and in the multipath head that number of passes is encapsulated in adaptation layer message, is sent to the corresponding fathers of the Rank Node, each intermediary routing node carries out message forwarding according to the above method, untill aggregation node is sent to.

Further, the method specifically includes following steps:

S1:After adaptation layer multi-path transmission entity receives the message that protocol stack upper strata is transmitted, the reliability according to message will Ask, it is determined that the total path bar number P needed for transmitting the message;When P is less than or equal to 1, show that the message is passed without the use of multipath It is defeated, then the message is directly forwarded;

S2:It is RPL father using multipath message distribution method when the total path bar number P needed for transmitting the message is more than 1 The distribution of each father node needs to forward the number C of the message in node set;

S3:Father node of the multi-path transmission entity for forwarding number C more than or equal to 1, copy packet and in its adaptation layer After adding multipath head in head, message is then sent to the father node;The multipath head comprising head type declaration domain, Multipath packet number domain (SequenceNumber) and number of passes domain (PathCount);Wherein, it is many in all copy packets The multipath packet number domain of path head must be consistent, and cumulative when next new message is sent, number of passes The corresponding forwarding number C of domain filling;Father node to forwarding number C less than 1, the message of duplication is not sent;

S4:After intermediary routing node receives the message comprising multipath head, path bar number field in multipath head is judged Value PathCount whether be equal to 1, keep the constant direct forwarding of value in multipath head each domain should if PathCount is equal to 1 Message;The message needs to continue to replicate PathCount parts in this node and be distributed to mulitpath if PathCount is more than 1 On, repeat step S2 and S3, in step s 2 P be equal to PathCount, in step s3, do not add new multipath head again Portion simultaneously keeps multipath packet number domain constant, changes the corresponding forwarding number C of number of passes domain filling;

S5:After destination node receives the message comprising multipath head, by the multipath Bao Xu in multipath head Whether row number domain and source address may determine that received the message before, and upper-layer protocol is passed to if not, be abandoned if having The message.

Further, in step s 2, the multipath message distribution method is:If the number of path required by sending node P is then each father according to the magnitude relationship between the Rank value of each father node more than father node sum in RPL father node set Node distribution mulitpath, using equation below:

Wherein, round () is to round up function, is that result of calculation below rounds up treatment;P is total path Bar number, PmIt is the number of passes of father node m distribution to be;RmBe the corresponding Rank values of father node m (m=1,2 ..., n).

If number of path P is less than or equal to father node number, P is selected successively according to Rank value order from small to large Rank value, and for the corresponding father node of each Rank value distributes a paths.

Further, in step s3, multipath head includes head type declaration domain, multipath packet number domain And number of passes domain (PathCount) (SequenceNumber);Wherein, it is all necessary before the different types of heading of adaptation layer There is a head type declaration domain, length is 8;Unique sequence numbers of the SequenceNumber domains comprising message, length is 16; PathCount domains send or E-Packet comprising node needs the number of passes of filling, and length is 8.

The beneficial effects of the present invention are:

1) this method can effectively improve in IPv6 wireless sense networks message transmission success rate end to end, improve network Transmission reliability.Reliability requirement multipath message higher, by the number of passes for distributing in advance, issues corresponding multiple Father node, many transmission paths are set up with this, so as to efficiently solve asking for 6LoWPAN network single paths message transmissions easily failure Topic.

2) this method being capable of effectively energy balance, alleviation network congestion.Sending node is it by father node Rank value When the message number of forwarding is number of passes required for distribution, the calculating of father node Rank value need to consider two parameters, the node To the jumping figure value and residual energy value of aggregation node.Consideration to energy is conducive to balancing energy, it is to avoid excessive message is by energy The relatively low intermediary routing node forwarding of amount.

Brief description of the drawings

In order that the purpose of the present invention, technical scheme and beneficial effect are clearer, the present invention provides drawings described below and carries out Explanation:

Fig. 1 is 6LoWPAN network multipaths footpath transmission method flow chart of the present invention;

Fig. 2 is 6LoWPAN protocol stack architectures figure of the present invention;

Fig. 3 is adaptation layer multipath head frame format figure of the present invention;

Fig. 4 is single father node message transmissions schematic diagram of the present invention;

Fig. 5 is multiple father node (number of passes P is more than father node number) message transmissions schematic diagrames of the present invention;

Fig. 6 illustrates for multiple father node (number of passes P is less than or equal to father node number) message transmissions of the present invention Figure.

Specific embodiment

Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described in detail.

Fig. 1 is 6LoWPAN network multipaths footpath transmission method flow chart, and in 6LoWPAN networks, source node sends message When, then the number of passes needed for first determining transmitting message is that each father node distributes one or more path by Rank value, Rank value is calculated by its father node according to self rest energy value and to the jumping figure value of aggregation node, and in adaptation layer by road Footpath bar number is encapsulated in the multipath head of message, is sent to the corresponding father node of the Rank value, each intermediary routing node according to Message forwarding is carried out according to the above method, untill aggregation node is sent to.

The method specifically includes following steps:

After S1, adaptation layer multi-path transmission entity receive the message that protocol stack upper strata is transmitted, the reliability according to message will Ask, it is determined that the total path bar number P needed for transmitting the message.When P is less than or equal to 1, show that the message is passed without the use of multipath It is defeated, then the message is directly forwarded;

S2, when transmit the message needed for total path bar number P be more than 1 when, using multipath message distribution method be RPL father The distribution of each father node needs to forward the number C of the message in node set;

The father node of S3, multi-path transmission entity for forwarding number C more than or equal to 1, copy packet and in its adaptation layer After adding multipath head in head, message is then sent to the father node, multipath head includes head type declaration domain, multichannel Footpath packet number domain (SequenceNumber) and number of passes domain (PathCount).Wherein, multipath in all copy packets The multipath packet number domain of head must be consistent, and cumulative when next new message is sent, and number of passes domain is filled out Fill corresponding forwarding number C.Father node to forwarding number C less than 1, the message of duplication is not sent;

After S4, intermediary routing node receive the message comprising multipath head, path bar number field in multipath head is judged Value PathCount whether be equal to 1, keep the constant direct forwarding of value in multipath head each domain should if PathCount is equal to 1 Message;The message needs to continue to replicate PathCount parts in this node and be distributed to mulitpath if PathCount is more than 1 On, repeat step 102 and 103, in a step 102 P be equal to PathCount, in step 103, new multichannel is not added again Footpath head simultaneously keeps multipath packet number domain constant, changes the corresponding forwarding number C of number of passes domain filling;

S5, after destination node receives the message comprising multipath head, by the multipath Bao Xu in multipath head Whether row number domain and source address may determine that received the message before, and upper-layer protocol is passed to if not, be abandoned if having The message.

Fig. 2 show 6LoWPAN protocol stack architecture figures, and the RPL for being used by Internet in the present invention is route and is adapted to The multipath head of layer design, realizes multipath message transmissions.

Fig. 3 show adaptation layer multipath head frame format figure, and the multipath head of adaptation layer design is said comprising head type Bright domain, multipath packet number domain (SequenceNumber) and number of passes domain (PathCount).Wherein, adaptation layer is different Must all there is a head type declaration domain before the heading of type, length is 8;SequenceNumber domains include message Unique sequence numbers, are defined as length for 16;Number of passes of the PathCount domains comprising node transmission or the needs that E-Packet, Length is defined as 8.

Fig. 4 show the message transmissions schematic diagram in the case of source node only one of which father node, will be come as a example by scheming below Illustrate message transmission procedure.As illustrated, source node number of passes P=8 according to needed for reliability requirement determines, because it only has , then then to PathCount, i.e. PathCount=8 be encapsulated in multipath head P=8 indirect assignments by one father node Unique father node is issued in message and directly, father node is forwarded the packet away again after receiving message.

Fig. 5 show source node (number of passes P in the case of multiple father nodes>Father node number) message transmissions illustrate Figure, equally will illustrate message transmission procedure as a example by scheming below.As illustrated, source node is according to needed for reliability requirement determines Number of passes P=8, and source node has 3 father nodes, then need the magnitude relationship between the Rank value according to father node, gives father's section Point distribution path bar number, using following distribution formula:

Obtain following result of calculation:

Then by P1、P2、P3Value be assigned to PathCount, i.e. PathCount respectively1=500, PathCount2=100, PathCount3=200, corresponding father node A, B, C respectively are being issued into the encapsulation of multipath head afterwards in messages, they are received New P values, i.e. P=PathCount are obtained after to message.Then same message distribution method is taken again and is forwarded the packet out Go.After destination node receives first message comprising multipath head, upper-layer protocol is passed it to, it is remaining comprising phase Then abandoned with 7 messages of packet number, be not transferred to upper-layer protocol.

Fig. 6 show source node (number of passes P in the case of multiple father nodes<=father node number) message transmissions illustrate Figure, equally will illustrate message transmission procedure as a example by scheming below.As illustrated, source node is according to needed for reliability requirement determines Number of passes P=3, and source node has 4 father nodes, then the sequential selection according to Rank value from small to large, selects Rank here Value be respectively 100,200,500 three paths, behind message will be sent to aggregation node along a paths respectively.Similarly, mesh is worked as Node receive first message comprising multipath head after, pass it to upper-layer protocol, it is remaining comprising identical Bao Xu 2 messages of row number are then abandoned, and are not delivered to upper strata.

Finally illustrate, preferred embodiment above is merely illustrative of the technical solution of the present invention and unrestricted, although logical Cross above preferred embodiment to be described in detail the present invention, it is to be understood by those skilled in the art that can be Various changes are made to it in form and in details, without departing from claims of the present invention limited range.

Claims (4)

1. a kind of IPv6 wireless sense network multi-path transmission methods based on RPL Routing Protocols, it is characterised in that:In the method In, when source node sends message, the number of passes needed for first determining transmitting message, then by the magnitude relationship between Rank value For each father node distributes the Rank value corresponding number of passes, Rank value is by RPL according to residue energy of node value and to convergence The jumping figure value of node is calculated, and in the multipath head that number of passes is encapsulated in adaptation layer message, is sent to this The corresponding father nodes of Rank, each intermediary routing node carries out message forwarding according to the above method, until being sent to aggregation node Untill.
2. a kind of IPv6 wireless sense network multi-path transmission methods based on RPL Routing Protocols according to claim 1, its It is characterised by:The method specifically includes following steps:
S1:After adaptation layer multi-path transmission entity receives the message that protocol stack upper strata is transmitted, according to the reliability requirement of message, really Surely the total path bar number P needed for transmitting the message;When P is less than or equal to 1, show that the message is without the use of multi-path transmission, then The message is directly forwarded;
S2:It is RPL father nodes using multipath message distribution method when the total path bar number P needed for transmitting the message is more than 1 The distribution of each father node needs to forward the number C of the message in set;
S3:Father node of the multi-path transmission entity for forwarding number C more than or equal to 1, copy packet and in its adaptation layer head After middle addition multipath head, message is then sent to the father node;The multipath head includes head type declaration domain, multichannel Footpath packet number domain (SequenceNumber) and number of passes domain (PathCount);Wherein, multipath in all copy packets The multipath packet number domain of head must be consistent, and cumulative when next new message is sent, and number of passes domain is filled out Fill corresponding forwarding number C;Father node to forwarding number C less than 1, the message of duplication is not sent;
S4:After intermediary routing node receives the message comprising multipath head, the value of path bar number field in multipath head is judged Whether PathCount is equal to 1, and the value in each domain of holding multipath head is constant if PathCount is equal to 1 directly forwards the report Text;The message needs to continue to replicate PathCount parts and be distributed on mulitpath in this node if PathCount is more than 1, Repeat step S2 and S3, in step s 2 P be equal to PathCount, in step s3, do not add new multipath head again simultaneously Keep multipath packet number domain constant, change the corresponding forwarding number C of number of passes domain filling;
S5:After destination node receives the message comprising multipath head, by the multipath packet number in multipath head Whether domain and source address may determine that received the message before, and upper-layer protocol is passed to if not, and the report is abandoned if having Text.
3. a kind of IPv6 wireless sense network multi-path transmission methods based on RPL Routing Protocols according to claim 2, its It is characterised by:In step s 2, the multipath message distribution method is:If the number of path P required by sending node is more than RPL Father node sum in father node set, then according to the magnitude relationship between the Rank value of each father node for each father node is distributed Mulitpath, using equation below:
P m = r o u n d ( P R m &CenterDot; ( 1 R 1 + 1 R 2 + ... + 1 R n ) )
Wherein, round () is to round up function, is that result of calculation below rounds up treatment;P is total path bar Number, PmIt is the number of passes of father node m distribution to be;RmBe the corresponding Rank values of father node m (m=1,2 ..., n).
If number of path P is less than or equal to father node number, P Rank is selected successively according to Rank value order from small to large Value, and for the corresponding father node of each Rank value distributes a paths.
4. a kind of IPv6 wireless sense network multi-path transmission methods based on RPL Routing Protocols according to claim 2, its It is characterised by:In step s3, multipath head includes head type declaration domain, multipath packet number domain And number of passes domain (PathCount) (SequenceNumber);Wherein, it is all necessary before the different types of heading of adaptation layer There is a head type declaration domain, length is 8;Unique sequence numbers of the SequenceNumber domains comprising message, length is 16; PathCount domains send or E-Packet comprising node needs the number of passes of filling, and length is 8.
CN201710129767.8A 2017-03-06 2017-03-06 A kind of IPv6 wireless sense network multi-path transmission methods based on RPL Routing Protocols CN106922008A (en)

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