CN101127714A - A route management method and device for wireless mesh network - Google Patents
A route management method and device for wireless mesh network Download PDFInfo
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- CN101127714A CN101127714A CNA200710146341XA CN200710146341A CN101127714A CN 101127714 A CN101127714 A CN 101127714A CN A200710146341X A CNA200710146341X A CN A200710146341XA CN 200710146341 A CN200710146341 A CN 200710146341A CN 101127714 A CN101127714 A CN 101127714A
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Abstract
The utility model provides a routing management method of wireless mesh network for the routing study process of wireless access point in the wireless mesh network, comprising the flowing steps: the routing broadcast request message is transmitted to other wireless access points in the wireless mesh network; the broadcast request message transmitted by other wireless access points in the wireless mesh network is received, the broadcast request message covers the original wireless access point address of the broadcast message; the routing of the original wireless access point is maintained. The utility model also provides a wireless mesh network a routing management equipment in the wireless mesh network. The utility model has the advantages that equivalent routing is established for objective MP, thereby improving firmness of MESH network routing and the utilization ratio of the MESH network source.
Description
Technical field
The present invention relates to wireless communication technology field, relate in particular to route management method and equipment in a kind of based on wireless mesh network.
Background technology
WLAN (Wireless Local Access Network, WLAN (wireless local area network)) provides a kind of wireless connections service of local area network (LAN).Because wireless data access at a high speed can be provided, WLAN is one of relatively more popular technology of present IT industry, also is popular wireless access way.WLAN adopts centralized AC (Access Controller, wireless controller)-AP (Access Point, WAP (wireless access point)) framework usually.AC provides the centralized management of wlan network, and AP then adds wlan network and the wireless access service is provided by setting up link with AC.
Concentrate the WLAN framework at CAPWAP (Control and Provisioning of Wireless AccessPoints, wireless access point control and regulation) clearly definition arranged in the agreement, this protocol description the division of WLAN function on AP equipment and AC equipment, and defined communication protocol between AP and the AC.Communication protocol between AC-AP is at present: seek AC after AP powers on, if AC is interconnected with two layers of AP, then can find AC by broadcasting packet, if AC is interconnected by three layers with AP, then need be by other agreements such as DHCP (Dynamic Host Configuration Protocol, DHCP), DNS (Domain Name Server, name server) obtains the information of AC, sets up CAPWAP tunnel with AC then.
HWMP (Hybrid Wireless MESH Protocol, hybrid wireless MESH agreement) is the Routing Protocol that solves in the WLAN protocol family in the Wireless MESH network, defines in 802.11s.This agreement comes from AODV (Ad hoc On-demand Distance Vector Routing, self network organized and distance vector) agreement, is the distance vector protocol of data-driven.Be characterized in the maintenance on demand routing iinformation, concrete implementation procedure comprises: need send to destination when the source end has data, and the source end is not when arriving the route of destination, the source end obtains the route of destination by sending route request information; After destination is received the route requests that the source end sends, respond route replies message.This method has farthest reduced the routing iinformation quantity of safeguarding, the expense of Routing Protocol is less, but owing to when not having route, need to carry out the route learning search procedure, has increased the propagation delay time of data.
802.11s the sight that Routing Protocol is attempted to solve is that all nodes all move in the network, and can both dynamically keep in any way and the getting in touch of other nodes, network node can move everywhere, also startup and shutdown at any time, these all can make topology of networks change at any time.Present popular MESH framework is based on AC-MP's, and the MESH access point is fixed usually.As shown in Figure 1: comprising: MP (MESH Point, the MESH point), MPP (MESH Point collocated witha mesh Portal, the MESH point of configuration mesh inlet), MAP (MESH Access Point, MESH access point) and STA (Station, website).MAP realizes that STA inserts the function of MESH network, and MPP realizes the IWF of MESH network and external network.
Pass through RREQ (Route Request in the Routing Protocol that 802.11s recommends at present, route requests) and RREP (Route Reply, route is responded) get access to the route of purpose MP in the MESH network in real time, be specially: RREQ goes for the route of asking purpose by broadcasting, and on earth where, can only not broadcast because know purpose this moment, the node backward learning is to the route in source on the way, like this after destination node receives this route requests, according to the route in the source of learning, clean culture RREP.And, only can select an optimum route because the RREP message is clean culture, and can not set up the equal-cost route that arrives purpose MP, can not set up route stand-by.For Wireless MESH network, equal-cost route not only can provide load sharing, can also increase the robustness of route, reduces route and changes the Internet resources expense that causes.
Summary of the invention
The invention provides route management method and equipment in a kind of based on wireless mesh network, being implemented in the route that is maintained into all WAP (wireless access point) in the MESH network, and then obtain and be maintained into the equal-cost route of purpose WAP (wireless access point).
The invention provides route management method in a kind of based on wireless mesh network, be used for the route learning process of WAP (wireless access point), said method comprising the steps of at based on wireless mesh network:
Other WAP (wireless access point) send the routing broadcast request message in based on wireless mesh network;
Receive the broadcast request message that other WAP (wireless access point) send in the based on wireless mesh network, comprise the source wireless access dot address that sends described broadcasting packet in the described broadcast request message;
Be maintained into the route of described source WAP (wireless access point).
Also comprise aim sequence number in the described broadcast request message, the described route that is maintained into the source WAP (wireless access point) specifically comprises:
Obtain described aim sequence DSN;
Manage the route of described source WAP (wireless access point) according to described DSN.
Described route of managing described source WAP (wireless access point) according to described DSN specifically comprises:
If the DSN that the DSN in the current broadcast request message carries less than previous broadcast request message then abandons described current broadcast request message;
If the DSN that the DSN in the current broadcast request message carries greater than previous broadcast request message then is updated to the route of the source WAP (wireless access point) of broadcast request message correspondence;
If the DSN in the current broadcast request message equals the DSN that previous broadcast request message is carried, then select route according to link cost.
The described route that is maintained into the source WAP (wireless access point) comprises two at least, realizes link backup and/or load balancing.
Described two routes are equal-cost route; Or comprise an optimum route and a hypo-optimal route in described two routes.
The described process that is maintained into two routes comprises:
Judge whether the optimum route that exists cost identical;
If exist, then safeguard the optimum route that described cost is identical, link backups each other;
If there is no, then be this Route Selection suboptimum route, as the backup link of described optimum route.
Described based on wireless mesh network is the MESH network, and described WAP (wireless access point) is the MESH access point.
The present invention also provides routing device in a kind of based on wireless mesh network, is used for the route learning process of WAP (wireless access point) at based on wireless mesh network, comprising:
The broadcast request message receiving element is used for receiving the broadcast request message that other WAP (wireless access point) of based on wireless mesh network send, and comprises the source wireless access dot address that sends described broadcasting packet in the described broadcast request message;
The route maintenance unit is connected with described broadcast request message receiving element, is used to be maintained into the route of described source WAP (wireless access point).
Described route maintenance unit specifically comprises:
The routing iinformation storing sub-units is used to store into the routing iinformation of other source WAP (wireless access point);
Upgrade subelement, be used for upgrading the routing iinformation in the described routing iinformation storing sub-units according to the aim sequence of described broadcast request message number.
Described renewal subelement specifically is used for: the DSN that the DSN of current broadcast request message carries less than previous broadcast request message then abandons described current broadcast request message; The DSN that DSN in the current broadcast request message carries greater than previous broadcast request message is updated to the route of the source WAP (wireless access point) of broadcast request message correspondence; DSN in the current broadcast request message equals the DSN that previous broadcast request message is carried, and then selects route according to link cost.
Described route maintenance unit also comprises:
Optimum route selecting subelement is connected with described renewal subelement, is used to choose the optimum route of other WAP (wireless access point).
Described route maintenance unit also comprises:
Equal-cost route obtains subelement, is used for when having the optimum route of identical cost, safeguards the optimum route of identical cost, realizes link backup and/or load balancing; Or optimum route and hypo-optimal route are set, realize link backup and/or load balancing.
Described based on wireless mesh network MESH network, described WAP (wireless access point) is the MESH access point.
The invention provides a kind of computer program of on WAP (wireless access point), carrying out, comprise that some instructions are in order to carry out aforementioned WAP (wireless access point) multicast tree retransmission method in based on wireless mesh network.
The invention provides a kind of storage medium, store described computer program.
The invention provides a kind of computer equipment, comprise in order to the software of carrying out aforementioned WAP (wireless access point) route management method in based on wireless mesh network and the hardware that cooperates with software.
Compared with prior art, the embodiment of the invention has the following advantages:
In the embodiments of the invention, can set up equal-cost route, improve the robustness and the MESH network resource utilization of MESH network route for purpose MP.
In addition, by equal-cost route is that given link is set up the protection link, if the optimum route to next jumping is the link that needs protection, then be this Route Selection suboptimum route, to the suboptimal route of route next jump the backup link of setting up for protected link neighbours; And main road is exactly a primary link for protected link neighbours by link.
Description of drawings
Fig. 1 is a MESH schematic network structure in the prior art;
Fig. 2 is a route management method flow chart in the based on wireless mesh network in the embodiment of the invention;
Fig. 3 is the based on wireless mesh network structure chart that route management method is used among Fig. 2 embodiment;
Fig. 4 is a routing device structure chart in a kind of based on wireless mesh network in the embodiment of the invention.
Embodiment
Below in conjunction with drawings and Examples, the specific embodiment of the present invention is described in further detail:
Route management method in a kind of based on wireless mesh network of the embodiment of the invention is applied to the route learning process of WAP (wireless access point) in based on wireless mesh network, and wherein, WAP (wireless access point) includes but not limited to that MP, based on wireless mesh network include but not limited to the MESH network.Wireless mesh network system comprises MP1, MP2, MP3, MP4 and MP5 as shown in Figure 3, and this route management method may further comprise the steps:
Step s201, all MP in the based on wireless mesh network are periodically to other MP broadcasting RREQ message, destination address in the RREQ message is a broadcast address, so that all WAP (wireless access point) in the based on wireless mesh network can receive this broadcast, source address is the wireless access dot address that sends this broadcasting packet.For example, the encapsulation format of message encapsulation comprises in the MESH network: RA (receiver address), TA (transmission address), DA (purpose MP address), SA (MP address, source), when MP1 sends the broadcast request message, RA is the MPP address, and TA is that address, the DA of MP1 is that broadcast address (promptly comprising all MP addresses in the network), SA are the MP1 address; When MP2 sent the broadcast request message, RA was the address of MP1, and TA is that address, the DA of MP2 is that broadcast address (promptly comprising all MP addresses in the network), SA are the MP2 address; When MP3 sent the broadcast request message, RA was the address of MPP, and TA is that address, the DA of MP3 is that broadcast address (promptly comprising all MP addresses in the network), SA are the MP3 address; When MP4 sent the broadcast request message, RA was the address of MP3 or MP4, and TA is that address, the DA of MP4 is that broadcast address (promptly comprising all MP addresses in the network), SA are the MP4 address; When MP5 sent the broadcast request message, TA was that address, the DA of MP5 is that broadcast address (promptly comprising all MP addresses in the network), SA are the MP5 address.
Step s202, WAP (wireless access point) receives the broadcast request message that sends from other WAP (wireless access point) in the based on wireless mesh network, comprise the wireless access dot address, DSN (the Destination Sequence Number that send described broadcasting packet in the broadcast request message, aim sequence number), described address is above-mentioned RA, TA, DA, SA.The WAP (wireless access point) that receives broadcasting packet is according to the corresponding routing iinformation of source address SA storage.
Step s203, the WAP (wireless access point) of described reception broadcast request message is maintained into the route of described source WAP (wireless access point).At first determine the routing iinformation of updated stored: if the DSN that the DSN in the current broadcast request message carries less than the previous broadcast request message of preserving according to the DSN among the step s202, illustrate that this broadcast request message is not up-to-date message, the subsequent packet of this message arrives, this message need not be handled, and then abandons described current message; If the DSN that the DSN in the current broadcast request message carries greater than the previous broadcast request message of preserving, show that this is the message of a renewal, need then to be updated to the route of the source WAP (wireless access point) of broadcast request message correspondence with the original content of safeguarding of the content to replace of this new information; If the DSN in the current broadcast request message equals the DSN that previous broadcast request message is carried, this message has passed through different paths and has arrived this node, different routes is described, then can safeguards these to many of the source WAP (wireless access point) different routes, link backups each other.Generally,, reduce bandwidth availability ratio, need then to select optimum route according to link cost in order to raise the efficiency.After selecting optimum route, if find that also other routes identical with this optimum routing link cost are arranged, then safeguard the optimum route of this equivalence, realize link backup or realize load balancing.Wherein, be exactly total link cost from the source node to the destination node cost, walk different routes, it spends different, optimum route is exactly the route of link cost minimum.Optimum route if there is no of equal value is that given link is safeguarded backup link according to strategy then, and default policy selects the suboptimum route as backup link, can certainly be that primary link is set up backup link according to the attributes such as load of link.For example: be this Route Selection suboptimum route, backup link as described optimum route, if optimum route next jump link corresponding is the link that needs protection, then be this Route Selection suboptimum route, suboptimum route next jump link corresponding is exactly the backup link of setting up for protected link neighbours; And main road is exactly a primary link for protected link neighbours by link.
The present invention also provides routing device in a kind of based on wireless mesh network, be used for the communication process of WAP (wireless access point) at based on wireless mesh network, as shown in Figure 4, comprise: broadcast request message receiving element 100, be used for receiving the broadcast request message that other WAP (wireless access point) of based on wireless mesh network send, comprise the source wireless access dot address that sends described broadcasting packet in the described broadcast request message; Route maintenance unit 200 is connected with described broadcast request message receiving element 100, is used to be maintained into the route of described source WAP (wireless access point); Broadcast request message transmitting element 300 is used for sending the routing broadcast request message to other WAP (wireless access point) of based on wireless mesh network.
Described route maintenance unit 200 specifically comprises: routing iinformation storing sub-units 210 is used to store into the routing iinformation of other source WAP (wireless access point); Upgrade subelement 220, be used for upgrading the routing iinformation in the described routing iinformation storing sub-units according to the aim sequence of described broadcast request message number; Optimum route selecting subelement 230 is connected with described renewal subelement 220, is used to choose the optimum route of other WAP (wireless access point); Equal-cost route obtains subelement 240, is used for when having the optimum route of identical cost, safeguards the optimum route of identical cost, realizes link backup and/or load balancing; Or optimum route and hypo-optimal route are set, realize link backup and/or load balancing.
Through the above description of the embodiments, those skilled in the art can be well understood to the present invention and can realize by the mode that software adds essential general hardware platform, can certainly pass through hardware, but the former is better execution mode under a lot of situation.Based on such understanding, the part that technical scheme of the present invention contributes to prior art in essence in other words can embody with the form of software product, this computer software product is stored in the storage medium, comprise that some instructions are with so that a computer equipment (can be a personal computer, server, the perhaps network equipment etc.) carry out the method for each embodiment of the present invention.
The above only is a preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (13)
1. route management method in the based on wireless mesh network is used for the route learning process of WAP (wireless access point) at based on wireless mesh network, it is characterized in that, said method comprising the steps of:
Other WAP (wireless access point) send the routing broadcast request message in based on wireless mesh network;
Receive the broadcast request message that other WAP (wireless access point) send in the based on wireless mesh network, comprise the source wireless access dot address that sends described broadcasting packet in the described broadcast request message;
Be maintained into the route of described source WAP (wireless access point).
2. route management method in the based on wireless mesh network according to claim 1 is characterized in that, also comprises aim sequence number in the described broadcast request message, and the described route that is maintained into the source WAP (wireless access point) specifically comprises:
Obtain described aim sequence DSN;
Manage the route of described source WAP (wireless access point) according to described DSN.
3. as route management method in the based on wireless mesh network as described in the claim 2, it is characterized in that described route of managing described source WAP (wireless access point) according to described DSN specifically comprises:
If the DSN that the DSN in the current broadcast request message carries less than previous broadcast request message then abandons described current broadcast request message;
If the DSN that the DSN in the current broadcast request message carries greater than previous broadcast request message then is updated to the route of the source WAP (wireless access point) of broadcast request message correspondence;
If the DSN in the current broadcast request message equals the DSN that previous broadcast request message is carried, then select route according to link cost.
4. as route management method in the based on wireless mesh network as described in the claim 3, it is characterized in that the described route that is maintained into the source WAP (wireless access point) comprises two at least, realize link backup and/or load balancing.
5. as route management method in the based on wireless mesh network as described in the claim 4, it is characterized in that described two routes are equal-cost route; Or comprise an optimum route and a hypo-optimal route in described two routes.
6. as route management method in the based on wireless mesh network as described in the claim 5, it is characterized in that the described process that is maintained into two routes comprises:
Judge whether the optimum route that exists cost identical;
If exist, then safeguard the optimum route that described cost is identical, link and/or load balancing backup each other;
If there is no, then be this Route Selection suboptimum route, as the backup link and/or the load balancing of described optimum route.
7. as route management method in the based on wireless mesh network as described in each in the claim 1 to 6, it is characterized in that described based on wireless mesh network is the MESH network, described WAP (wireless access point) is the MESH access point.
8. routing device in the based on wireless mesh network is used for the route learning process of WAP (wireless access point) at based on wireless mesh network, it is characterized in that, comprising:
The broadcast request message transmitting element is used for sending the routing broadcast request message to other WAP (wireless access point) of based on wireless mesh network;
The broadcast request message receiving element is used for receiving the broadcast request message that other WAP (wireless access point) of based on wireless mesh network send, and comprises the source wireless access dot address that sends described broadcasting packet in the described broadcast request message;
The route maintenance unit is connected with described broadcast request message receiving element, is used to be maintained into the route of described source WAP (wireless access point).
9. as routing device in the based on wireless mesh network as described in the claim 8, it is characterized in that described route maintenance unit specifically comprises:
The routing iinformation storing sub-units is used to store into the routing iinformation of other source WAP (wireless access point);
Upgrade subelement, be used for upgrading the routing iinformation in the described routing iinformation storing sub-units according to the aim sequence of described broadcast request message number.
10. as routing device in the based on wireless mesh network as described in the claim 9, it is characterized in that described renewal subelement specifically is used for: the DSN that the DSN of current broadcast request message carries less than previous broadcast request message then abandons described current broadcast request message; The DSN that DSN in the current broadcast request message carries greater than previous broadcast request message is updated to the route of the source WAP (wireless access point) of broadcast request message correspondence; DSN in the current broadcast request message equals the DSN that previous broadcast request message is carried, and then selects route according to link cost.
11., it is characterized in that described route maintenance unit also comprises as routing device in the based on wireless mesh network as described in the claim 8:
Route stand-by is chosen subelement, is connected with described renewal subelement, is used to choose the route stand-by of other WAP (wireless access point).
12., it is characterized in that described route maintenance unit also comprises as routing device in the based on wireless mesh network as described in the claim 8:
Equal-cost route obtains subelement, is used for when having the optimum route of identical cost, safeguards the optimum route of identical cost, realizes link backup and/or load balancing; Or optimum route and hypo-optimal route are set, realize link backup and/or load balancing.
13. as routing device in the based on wireless mesh network as described in each in the claim 8 to 12, it is characterized in that, described based on wireless mesh network MESH network, described WAP (wireless access point) is the MESH access point.
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| CN200710146341XA CN101127714B (en) | 2007-09-06 | 2007-09-06 | A route management method and device for wireless mesh network |
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| CN102186221A (en) * | 2011-04-25 | 2011-09-14 | 北京星网锐捷网络技术有限公司 | Method and device for updating routing table item |
| CN101616426B (en) * | 2009-07-30 | 2011-09-28 | 杭州华三通信技术有限公司 | Method for avoiding wireless mesh network loop and mobile wireless mesh network access point |
| CN102246586A (en) * | 2008-10-23 | 2011-11-16 | 马来西亚微电子系统有限公司 | Wireless network system |
| CN102316041A (en) * | 2011-09-09 | 2012-01-11 | 福建星网锐捷网络有限公司 | Router switching method and device |
| CN101640628B (en) * | 2008-07-28 | 2012-05-23 | 华为技术有限公司 | Mesh network-based routing management and routing methods, node, device and system |
| CN102547905A (en) * | 2012-01-09 | 2012-07-04 | 上海电机学院 | Quality of service (QoS) routing realization method supporting Ad Hoc network |
| CN104320334A (en) * | 2014-11-03 | 2015-01-28 | 电子科技大学 | Centralized routing algorithm in wireless Mesh network |
| CN104412548A (en) * | 2013-12-31 | 2015-03-11 | 华为技术有限公司 | Method and device for keeping user device IP address fixed |
| CN104994556A (en) * | 2015-05-20 | 2015-10-21 | 杭州华三通信技术有限公司 | Method and device for establishing route based on hybrid wireless netted network protocol |
| CN112636963A (en) * | 2020-12-15 | 2021-04-09 | 烽火通信科技股份有限公司 | Networking management system and networking management method based on multiple addresses |
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| CN101640628B (en) * | 2008-07-28 | 2012-05-23 | 华为技术有限公司 | Mesh network-based routing management and routing methods, node, device and system |
| CN102246586A (en) * | 2008-10-23 | 2011-11-16 | 马来西亚微电子系统有限公司 | Wireless network system |
| CN102246586B (en) * | 2008-10-23 | 2014-06-25 | 马来西亚微电子系统有限公司 | Wireless network system |
| CN101616426B (en) * | 2009-07-30 | 2011-09-28 | 杭州华三通信技术有限公司 | Method for avoiding wireless mesh network loop and mobile wireless mesh network access point |
| CN102186221B (en) * | 2011-04-25 | 2013-11-20 | 北京星网锐捷网络技术有限公司 | Method and device for updating routing table item |
| CN102186221A (en) * | 2011-04-25 | 2011-09-14 | 北京星网锐捷网络技术有限公司 | Method and device for updating routing table item |
| CN102316041A (en) * | 2011-09-09 | 2012-01-11 | 福建星网锐捷网络有限公司 | Router switching method and device |
| CN102316041B (en) * | 2011-09-09 | 2014-10-29 | 福建星网锐捷网络有限公司 | Router switching method and device |
| CN102547905A (en) * | 2012-01-09 | 2012-07-04 | 上海电机学院 | Quality of service (QoS) routing realization method supporting Ad Hoc network |
| CN104412548A (en) * | 2013-12-31 | 2015-03-11 | 华为技术有限公司 | Method and device for keeping user device IP address fixed |
| CN104320334A (en) * | 2014-11-03 | 2015-01-28 | 电子科技大学 | Centralized routing algorithm in wireless Mesh network |
| CN104320334B (en) * | 2014-11-03 | 2017-06-13 | 电子科技大学 | A kind of concentrated route algorithm in wireless Mesh netword |
| CN104994556A (en) * | 2015-05-20 | 2015-10-21 | 杭州华三通信技术有限公司 | Method and device for establishing route based on hybrid wireless netted network protocol |
| CN112636963A (en) * | 2020-12-15 | 2021-04-09 | 烽火通信科技股份有限公司 | Networking management system and networking management method based on multiple addresses |
| CN112636963B (en) * | 2020-12-15 | 2022-04-26 | 烽火通信科技股份有限公司 | Networking management system and networking management method based on multiple addresses |
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