CN101827416A - Node switching method in wireless sensor network, network and network node - Google Patents
Node switching method in wireless sensor network, network and network node Download PDFInfo
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Abstract
The embodiment of the invention discloses a node switching method in a wireless sensor network, a network and a network node, which are used for preventing waste of network resources and confused routing and addressing. The method in the embodiment of the invention comprises the following steps that: a mobile node detects the quality of a link between the mobile node and a first father node; when the quality of the link reaches a preset threshold, the mobile node transmits a departure request to the first father node, wherein the departure request is used for indicating that the mobile node applies for alteration of the father node so as to request the first father node to release a network identifier of the mobile node and update route information; and the mobile node transmits a join request to a second father node, wherein the join request is used for requesting the second father node to allow the mobile node to be joined in the network as a sub-node thereof, distributing the network identifier to the mobile node and updating the route information. The embodiment of the invention also provides the network and the network node. The embodiment of the invention can effectively prevent the waste of the network resources and the confused routing and addressing at the same time.
Description
Technical field
The present invention relates to the communications field, relate in particular to node switching method, network and network node in a kind of wireless sensor network.
Background technology
Sensor network is to be different from other traditional communication network, and it is and uses relevant network that its generation and development all interrelate with application always.Pass through the deduction of different field for many years, the application of sensor network technique in fields such as military field, environmental monitoring, medical monitoring, industrial monitoring, Smart Homes obtained affirming fully and showing.
In wireless sensor network, each node presents the tree topology structure, and wherein, aggregation node is a root node, is distributed with father node and child node successively downwards, also is distributed with leaf node at the least significant end of tree topology structure.
Wireless sensor network protocols of the prior art comprises bottom standard agreement and high-rise standard agreement, wherein, high-rise standard agreement mainly adopts ZigBee 2007 Pro agreements, according to ZigBee 2007 Pro agreements, in case networks are completed, network identity (the ID of each node, Identity) with regard to basic fixed, if certain mobile node is moved, exceeded the communication range with former father node, this mobile node will disconnect the link with father node, deviated from network, like this, this mobile node must be searched new father node again, and adds the flow process of network again.
But, in above-mentioned prior art, because mobile node belongs to new father node when adding network again, so new father node distributes new network ID for initiate mobile node, and former father node and do not know that mobile node has left, so before timer expired, can not discharge the network ID of this mobile node, on the one hand cause waste of network resources, making on the other hand has two different network IDs to point to same mobile node in the network, causes the routing addressing confusion easily.
Summary of the invention
The embodiment of the invention provides node switching method, network and network node in a kind of wireless sensor network, can avoid waste of network resources, prevents the situation of routing addressing confusion simultaneously.
Node switching method in the wireless sensor network that the embodiment of the invention provides comprises: the link-quality between the mobile node detection and first father node; When described link-quality reaches the thresholding that presets, mobile node sends the request of leaving to described first father node, describedly leave request and be used to represent described mobile node application change father node, discharge the network identity of described mobile node and new routing information more to ask described first father node; Mobile node joins request to second father node transmission that scans, and described joining request is used to ask described second father node to allow described mobile node also to identify also more new routing information for described mobile node distribution network as its child node adding network.
Node switching method in the wireless sensor network that the embodiment of the invention provides comprises: receive the request of leaving that mobile node sends; When described when leaving the described mobile node application change of request expression father node, discharge the network identity of described mobile node and new routing information more.
Node switching method in the wireless sensor network that the embodiment of the invention provides comprises: receive joining request of mobile node transmission; Join request the described mobile node application of expression when adding network again when described, allow described mobile node to add network and be described mobile node distribution network sign and new routing information more as its child node.
The wireless sensor network node that the embodiment of the invention provides comprises: detecting unit, be used to detect and first father node between link-quality; Scanning element is used to scan second father node; Leave request transmitting unit, be used for when described link-quality reaches the thresholding that presets, leave request to described first father node transmission, described leaving asks to be used for expression application change father node, identifies also more new routing information to ask the described first father node releasing network; The transmitting element that joins request is used for sending to described second father node and joins request, and described joining request is used to ask described second father node to allow mobile node to add network as its child node, distribution network sign and new routing information more.
The wireless sensor network node that the embodiment of the invention provides comprises: leave the request receiving element, be used to receive the request of leaving that mobile node sends; Releasing unit is used for when described discharging the network identity of described mobile node when leaving the described mobile node application change of request expression father node; Updating block is used for when described when leaving the described mobile node application change of request expression father node, more new routing information; Radio unit is used to broadcast the routing iinformation after the renewal.
The wireless sensor network node that the embodiment of the invention provides comprises: the receiving element that joins request is used to receive joining request of mobile node transmission; Allocation units are used for when the described described mobile node application of expression that joins request adds network again, allow described mobile node to add network and be described mobile node distribution network sign as its child node; Updating block is used for when the described described mobile node application of expression that joins request adds network again, more new routing information; Radio unit is used to broadcast the routing iinformation after the renewal.
The wireless sensor network that the embodiment of the invention provides comprises: mobile node, first father node, and second father node.
As can be seen from the above technical solutions, the embodiment of the invention has the following advantages:
In the embodiment of the invention, mobile node is after determining to need the replacing father node, can send the request of leaving to former father node, to ask this former father node to discharge the network ID of mobile node, and renewal routing table, mobile node can send to new father node and join request simultaneously, allowing mobile node to add network as its child node with this new father node of request is mobile node distribution network ID also, and the renewal routing table, so, when mobile node after former father node moves to new father node, its network ID in former father node promptly can be deleted, therefore, this network ID can be repeated to utilize, thereby has avoided waste of network resources;
Simultaneously, when mobile node after former father node moves to new father node, its network ID in former father node promptly can be deleted, thus the situation that two different network IDs point to same mobile node can not appear in network, thus can prevent the situation of routing addressing confusion.
Description of drawings
Fig. 1 is embodiment schematic diagram of node switching method in the embodiment of the invention;
Fig. 2 is another embodiment schematic diagram of node switching method in the embodiment of the invention;
Fig. 3 is another embodiment schematic diagram of node switching method in the embodiment of the invention;
Fig. 4 is another embodiment schematic diagram of node switching method in the embodiment of the invention;
Fig. 5 is a tree topology structural representation in the wireless sensor network in the embodiment of the invention;
Fig. 6 is embodiment of network node in the embodiment of the invention;
Fig. 7 is another embodiment of network node in the embodiment of the invention;
Fig. 8 is another embodiment of network node in the embodiment of the invention;
Fig. 9 is a wireless sensor network embodiment schematic diagram in the embodiment of the invention.
Embodiment
The embodiment of the invention provides node switching method and network node and wireless sensor network in a kind of wireless sensor network, can avoid waste of network resources, prevents the situation of routing addressing confusion simultaneously.
See also Fig. 1, node switching method is applied in the wireless sensor network in the embodiment of the invention, and one of them embodiment comprises:
101, the link-quality between the mobile node detection and first father node;
In wireless sensor network, when a certain mobile node is moved, the link-quality between the continuous detection of its meeting and its current father node (first father node).
102, mobile node sends the request of leaving to first father node;
When link-quality reached the thresholding that presets, mobile node sent the request of leaving to first father node.
Need to prove, link-quality reaches and presets thresholding and be meant that link-quality drops to certain degree, illustrate that then mobile node can leave first father node, this moment, mobile node can send the request of leaving to first father node, this leaves request and is used to represent mobile node application change father node, discharges the network ID of mobile node and new routing information more to ask first father node.
103, mobile node sends to second father node that scans and joins request.
In the present embodiment, mobile node can scan new father node, specifically can in the link quality process between step 101 detection and first father node, scan new father node, can scan new father node again when step 102 link-quality reaches the thresholding that presets, concrete scanning does not limit opportunity herein yet.
Mobile node scans after the new father node, if this new father node is one, then this new father node is defined as second father node, if this new father node is a plurality of, then choosing wherein, the best father node of channel conditions is second father node.
Determined after second father node that mobile node can send to this second father node and join request, this joins request and is used to ask second father node to allow mobile node to add network and be mobile node distribution network ID and new routing information more as its child node.
In the present embodiment, mobile node is after determining to need the replacing father node, can send the request of leaving to former father node, to ask this former father node to discharge the network ID of mobile node, and renewal routing table, mobile node can send to new father node and join request simultaneously, allowing mobile node to add network as its child node with this new father node of request is mobile node distribution network ID also, and the renewal routing table, so, when mobile node after former father node moves to new father node, its network ID in former father node promptly can be deleted, therefore, this network ID can be repeated to utilize, thereby has avoided waste of network resources;
Simultaneously, when mobile node after former father node moves to new father node, its network ID in former father node promptly can be deleted, thus the situation that two different network IDs point to same mobile node can not appear in network, thus can prevent the situation of routing addressing confusion.
Angle from mobile node is described the node switching method the embodiment of the invention above, angle from former father node (i.e. first father node) is described the node switching method the embodiment of the invention below, see also Fig. 2, node switching method is applied in the wireless sensor network in the embodiment of the invention, and wherein another embodiment comprises:
201, receive the request of leaving that mobile node sends;
In the present embodiment, when a certain mobile node is moved, the link-quality between the continuous detection of its meeting and its first father node, when link-quality reached the thresholding that presets, first father node can receive the request of leaving from this mobile node.
202, the network ID of release mobile node and more new routing information;
When first father node determines that this leaves request expression mobile node application change father node, the then network ID of first father node release mobile node and more new routing information.
203, the routing iinformation after broadcasting is upgraded.
In the present embodiment, after first father node has upgraded routing iinformation, can also broadcast the routing iinformation after this renewal.
In the present embodiment, former father node can be deleted the network ID of this mobile node according to the request of mobile node, and therefore, this network ID can be repeated to utilize, thereby has avoided waste of network resources;
Simultaneously, when mobile node after former father node moves to new father node, its network ID in former father node promptly can be deleted, thus the situation that two different network IDs point to same mobile node can not appear in network, thus can prevent the situation of routing addressing confusion.
Angle from new father node (i.e. second father node) is described the node switching method the embodiment of the invention below, sees also Fig. 3, and node switching method is applied in the wireless sensor network in the embodiment of the invention, and wherein another embodiment comprises:
301, receive joining request of mobile node transmission;
In the present embodiment, when a certain mobile node was moved, it scanned new father node (i.e. second father node) and can send to this second father node afterwards and join request, and then second father node can receive this from mobile node and joins request.
302, be mobile node distribution network ID and new routing information more.
When second father node determined that this expression mobile node application that joins request adds network again, this second father node allowed mobile node to add network as its child node and be also new routing information more of mobile node distribution network ID.
303, the routing iinformation after broadcasting is upgraded.
In the present embodiment, after second father node has upgraded routing iinformation, can also broadcast the routing iinformation after this renewal.
In the present embodiment, when mobile node after former father node moves to new father node, its network ID in former father node promptly can be deleted, so the situation that two different network IDs point to same mobile node in network, can not occur, thereby can prevent the situation of routing addressing confusion.
Mutual angle is described the node switching method the embodiment of the invention between each node below, sees also Fig. 4, and node switching method is applied in the wireless sensor network in the embodiment of the invention, and wherein another embodiment comprises:
401, the link-quality between the mobile node detection and first father node;
In wireless sensor network, when a certain mobile node is moved, the link-quality between the continuous detection of its meeting and its current father node (first father node).
In the present embodiment, specifically can detect by following several modes:
(1) detects received signal intensity;
Mobile node detects the intensity of the signal that receives from first father node, and the intensity of this signal is used for estimating the link-quality between the mobile node and first father node.
(2) detect the error rate that receives data;
Mobile node detects the error rate of the data that receive from first father node, and the error rate of these data is used for estimating the link-quality between the mobile node and first father node.
Need to prove, only be that to be example in two modes be illustrated detecting link-quality in the present embodiment above, is understandable that, in actual applications, except adopting above-mentioned dual mode, can also adopt more mode, specifically do not limit herein.
402, judge whether to reach prerequisite, if then execution in step 403 and 405 if not, then continues execution in step 401;
Mobile node detected and first father node between link-quality after, can judge whether to arrive prerequisite, whether the intensity of the signal that promptly receives is lower than is preset thresholding, or whether the error rate of the data that receive is higher than and presets thresholding.
403, send the request of leaving;
After mobile node was determined to reach prerequisite, mobile node sent to first father node and leaves request, and this leaves request (NLME-LEAVE.request) specifically can be as shown in the table:
Table 1
| ??1 |
| ??Command?Options |
| ??NWK?command?payload |
Wherein, Command Options represents the option of ordering, and (NWK, Network) command payload represents the load of ordering to network.
The form of Command Options specifically can be as shown in the table:
Table 2
| Bit: 0～3 | ??4 | ??5 | ??6 | ??7 |
| ??Reserved | ??Change?parent | ??Rejoin | ??Request | ??Remove?children |
Wherein, bit 0～3 is Reserved, be expressed as and keep the position, bit 4 is Change parent, expression change father node sign position, when being 0 (or being 1), this position represents mobile node request change father node, bit 5 is Rejoin, and expression adds the network identity position again, represents that the mobile node request adds network again when this position is 0 (or being 1), bit 6 is Request, expression request mark position, what represent the mobile node transmission when this position is 0 (or being 1) is request message, bit 7 is Removechildren, expression removes child node, represents that the mobile node request removes child node when this position is 0 (or being 1).
404, the first father node releasing network ID, more new routing information and broadcasting;
First father node is determined mobile node request change father node according to the bit 4 (being Change parent sign position) that leaves in the request, and then first father node discharges the network ID of this mobile node, afterwards more new routing information and broadcasting.
In the present embodiment, concrete routing iinformation can comprise the child node quantity under this first father node, the initial ID address information of routing table, and routing table stops information such as ID address information.
Be understandable that this routing iinformation can also comprise the information of other types, does not specifically limit herein.
405, the new father node of mobile node scanning;
In the present embodiment, the opportunity of the father node that mobile node scanning is new is after the mobile link-quality that detects between definite and first father node reaches prerequisite, be understandable that, in actual applications, mobile node can scan new father node equally in the process of the link-quality between the detection and first father node.
In the present embodiment, the detailed process of the father node that mobile node scanning is new can for: constantly whether scanning can receive the beacon signal that other father nodes send on channel.
406, judge whether to scan father node, if scan, then execution in step 407, if do not scan, then continue execution in step 405;
407, determine second father node;
After mobile node receives beacon signal, can determine the father node that scans according to beacon signal, this process is those skilled in the art's a common practise, does not limit herein.
The father node that scans is one, determines that then this father node is second father node, if the father node that scans is a plurality of, then obtains the channel information of each father node that scans, according to the best father node of channel information selective channel situation as second father node.
408, transmission joins request;
Mobile node is determined can join request to the transmission of second father node after second father node, and concrete joining request (Rejoin Request) can be as shown in the table:
Table 3
| ??1 |
| ??Capability?Information |
| ??NWK?command?payload |
Wherein, expressing possibility property of Capability Information information, NWK command payload represents the load of ordering.
NWK command payload partly comprises the information that the explanation node adds the mode of network, can realize that the NLME-JOIN.request parameter comprises by the parameter setting in the corresponding N LME-JOIN.request order:
NLME-JOIN.request{
ExtendedPANId，
RejoinNetwork，
ScanChannel，
ScanDuration，
CapabilityInformation，
SecurityEnable}
Wherein, ExtendedPANId represents to expand the PAN sign, RejoinNetwork represents to add again the parameter of network, channel when ScanChannel represents to scan father node, duration when ScanDuration represents to scan father node, expressing possibility property of CapabilityInformation information, SecurityEnable represents the security enabled parameter.
Need to prove, in the present embodiment, the RejoinNetwork parameter can be set to 0X02, adopts the mode that adds network again to add second father node with the expression mobile node, in this joined request, the address setting of target device was the address of the second definite father node of mobile node.
409, the second father node distribution network ID, more new routing information and broadcasting;
When second father node determined that the mobile node application adds network again, this second father node allowed mobile node to add network as its child node and be also new routing information more of mobile node distribution network ID.
In the present embodiment, concrete routing iinformation can comprise the child node quantity under this second father node, the initial ID address information of routing table, and routing table stops information such as ID address information.
Be understandable that this routing iinformation can also comprise the information of other types, does not specifically limit herein.
In the present embodiment, mobile node is after determining to need the replacing father node, can send the request of leaving to former father node, to ask this former father node to discharge the network ID of mobile node, and renewal routing table, mobile node can send to new father node and join request simultaneously, with this new father node of request is that mobile node allows mobile node to add network as its child node, distribution network ID, and upgrade routing table, so, when mobile node after former father node moves to new father node, its network ID in former father node promptly can be deleted, therefore, this network ID can be repeated to utilize, thereby has avoided waste of network resources;
Simultaneously, when mobile node after former father node moves to new father node, its network ID in former father node promptly can be deleted, thus the situation that two different network IDs point to same mobile node can not appear in network, thus can prevent the situation of routing addressing confusion.
Above-mentioned node switching method in the embodiment of the invention is described, this node switching method can be applied in the wireless sensor network, need to prove, the high-rise standard agreement of the wireless sensor network in the embodiment of the invention can adopt ZigBee 2007 Pro agreements equally, above-mentioned each node switching method embodiment can set up process based on the networking process and the route of ZigBee 2007 Pro agreements, for ease of understanding, below the networking process of ZigBee 2007 Pro agreements and route being set up process is briefly described, but the regulation of this agreement should not be considered to be limitation of the present invention, if the technical scheme of other type protocol or non-agreement is identical in essence with the technical scheme of the embodiment of the invention, then also should be considered to be a part of the present invention.See also Fig. 5, ZigBee 2007 Pro protocol algorithm idiographic flows comprise:
(1), become the tree stage, aggregation node is broadcasted the control message downwards, each child node selects a father node to add into tree, each node all need be known father node and the child node of oneself.If a node is received the one-tenth tree request of a plurality of upstream nodes, then selecting the strong node of signal to add becomes its child node.
Wherein, node A is an aggregation node, Node B, and C, D, E, I, J, L is father node, node F, G, H, K, N, O, M are leaf node, promptly these nodes all do not have child node.
Need to prove that father node is relative node, certain node may be the father node of a node, is again the child node of another node simultaneously, and for example node C is the father node of node E, and is the child node of Node B,
In the embodiment of the invention, in (1) stage, the control message that uses between each node comprises two fields: " Source " and " Destination ", wherein, Source is a upstream node sign (can be media access control address), and Destination is a downstream node sign (can be media access control address).
The initial value of " Source " and " Destination " is this node identification in this control message, child node changes Source into Destination after receiving this message, and Destination changes into own and safeguards, continue this control messages of broadcasting, but not upwards broadcasting.When node is received a plurality of control messages, select the father node of the strong node of signal as oneself.
(2), after (1) process is finished, from leaf node, upwards transmit statistics control message, this message accounting all trees of this node node number and own ID numbers of expecting (having number of nodes more than or equal to own subtree) down so that the expansion of the adding of node and network.
Upstream node adds the 1 father node transmission that continues to oneself with the node number in this message, until arriving aggregation node, aggregation node is added up the ID number of all node numbers and each tree expectation, and distribute a continuous ID piece to subtree according to this, child node is selected the ID of a conduct oneself in the piece, and all the other ID are distributed to the subtree of oneself.In assigning process, node is according to the regular allocation ID that increases progressively along (contrary) clockwise ID value, and each father node uses the first ID of the own block of assigning to.
In the embodiment of the invention, in (2) stage, the control message that uses between each node comprises three fields: " ID of source ", " Total Num " and " Num desire ", wherein, ID of source is upstream father node sign, and Total Num is all subtree node numbers, the ID number that Num desire obtains for expectation.
After (2) process was finished, tree built up, can utilize tree to set up route to the communication of aggregation node.
After tree was set up, the node maintenance state table can be as shown in the table:
Table 4
| ??Num-branch | |||
| ??Branch1 | ??Beg-ID | ??End-ID | ??Nexthop |
| ??Branch2 | ??Beg-ID | ??End-ID | ??Nexthop |
Wherein, Num-branch is the number of subtree, and Beg-ID is assigned to the initial ID of ID piece for this tree, and End-ID is assigned to the termination ID of ID piece for this tree, and Nexthop is this tree next-hop node ID.
After the tree topology structure foundation of wireless sensor network is finished, each node can communicate by this tree topology structure, concrete use this tree topology structure to carry out the mode that method that node switches and earlier figures 1 describe to the embodiment shown in Figure 4 identical, repeat no more herein.
Below the network node embodiment in the embodiment of the invention is described, see also Fig. 6, embodiment of network node comprises in the embodiment of the invention:
Detecting unit 601, be used to detect and first father node between link-quality;
In the present embodiment, detecting unit 601 specifically can be by detecting received signal intensity, or the mode that detect to receive the error rate of data detects and first father node between link-quality, the testing process of describing among concrete testing process and the aforementioned embodiment shown in Figure 4 is similar, repeats no more herein.
In the present embodiment, the scanning process of describing among the process of scanning element 602 scanning second father node and the aforementioned embodiment shown in Figure 4 is similar, repeats no more herein.
Leave request transmitting unit 603, be used for when link-quality reaches the thresholding that presets, send to first father node and leave request, the request left is used for expression application change father node, to ask the first father node releasing network ID and new routing information more;
The transmitting element 604 that joins request is used for sending to second father node and joins request, and joining request is used to ask second father node to allow mobile node to add network as its child node, distribution network ID and new routing information more.
The mobile node that network node in the present embodiment can be described to the embodiment shown in Figure 4 for earlier figures 1 in actual applications.
In the present embodiment, mobile node is after determining to need the replacing father node, leave request transmitting unit 603 and can send the request of leaving to former father node, to ask this former father node to discharge the network ID of mobile node, and renewal routing table, the transmitting element 604 that joins request simultaneously can send to new father node and join request, allowing mobile node to add network as its child node with this new father node of request is mobile node distribution network ID also, and renewal routing table, so, when mobile node after former father node moves to new father node, its network ID in former father node promptly can be deleted, therefore, this network ID can be repeated to utilize, thereby has avoided waste of network resources;
Simultaneously, when mobile node after former father node moves to new father node, its network ID in former father node promptly can be deleted, thus the situation that two different network IDs point to same mobile node can not appear in network, thus can prevent the situation of routing addressing confusion.
See also Fig. 7, another embodiment of network node comprises in the embodiment of the invention:
Leave request receiving element 701, be used to receive the request of leaving that mobile node sends;
Releasing unit 702 is used for discharging the network ID of mobile node when leaving request expression mobile node application change father node;
Updating block 703 is used for when leaving request expression mobile node application change father node, more new routing information;
The former father node (i.e. first father node) that network node in the present embodiment can be described to the embodiment shown in Figure 4 for earlier figures 1 in actual applications.
In the present embodiment, releasing unit 702 can be deleted the network ID of this mobile node according to the request of mobile node, and therefore, this network ID can be repeated to utilize, thereby has avoided waste of network resources;
Simultaneously, when mobile node after former father node moves to new father node, its network ID in former father node promptly can be deleted, thus the situation that two different network IDs point to same mobile node can not appear in network, thus can prevent the situation of routing addressing confusion.
See also Fig. 8, another embodiment of network node comprises in the embodiment of the invention:
The receiving element 801 that joins request is used to receive joining request that mobile node sends;
Allocation units 802 are used for when the expression mobile node application that joins request adds network again, and allowing mobile node to add network as its child node is mobile node distribution network ID also;
Updating block 803 is used for when the expression mobile node application that joins request adds network again, more new routing information;
Radio unit 804 is used to broadcast the routing iinformation after the renewal.
The new father node (i.e. second father node) that network node in the present embodiment can be described to the embodiment shown in Figure 4 for earlier figures 1 in actual applications.
In the present embodiment, when mobile node after former father node moves to new father node, its network ID in former father node promptly can be deleted, so the situation that two different network IDs point to same mobile node in network, can not occur, thereby can prevent the situation of routing addressing confusion.
The embodiment of the invention also provides a kind of wireless sensor network, sees also Fig. 9, and the wireless sensor network embodiment in the embodiment of the invention comprises:
Wherein, mobile node 901 specifically can network node shown in Figure 6 as described above, first father node 902 specifically can network node shown in Figure 7 as described above, second father node 903 specifically can network node shown in Figure 8 as described above, annexation between the composition of the internal element of each network node and each network node is the content described in Fig. 6 to Fig. 8 as described above all, repeats no more herein.
Of particular note, among aforementioned each embodiment, moving that mobile node took place is relative moving, for example, when a certain network node is moved, this network node is moving of active for its father node, the child node of this network node then is passive moving for this network node, mobile node described in the embodiment of the invention all is meant child node, this move comprised that aforesaid active is moved with passive and moved, network described in the embodiment of the invention specifically can be the wireless sensor network of tree topology, specifically can repeat no more as shown in Figure 5 herein.
One of ordinary skill in the art will appreciate that all or part of step that realizes in the foregoing description method is to instruct relevant hardware to finish by program, this program can be stored in a kind of computer-readable recording medium, the above-mentioned storage medium of mentioning can be a read-only memory, disk or CD etc.
More than node switching method and network node and wireless sensor network in a kind of wireless sensor network provided by the present invention are described in detail, for one of ordinary skill in the art, thought according to the embodiment of the invention, part in specific embodiments and applications all can change, therefore, this description should not be construed as limitation of the present invention.
Claims (12)
1. node switching method in the wireless sensor network is characterized in that, comprising:
Link-quality between the mobile node detection and first father node;
When described link-quality reaches the thresholding that presets, mobile node sends the request of leaving to described first father node, describedly leave request and be used to represent described mobile node application change father node, discharge the network identity of described mobile node and new routing information more to ask described first father node;
Mobile node joins request to second father node transmission that scans, and described joining request is used to ask described second father node to allow described mobile node also to identify also more new routing information for described mobile node distribution network as its child node adding network.
2. method according to claim 1 is characterized in that, the link-quality between the described mobile node detection and first father node comprises:
Mobile node detects the intensity of the signal that receives from described first father node, or detects the error rate of the data that receive from described first father node;
Described link-quality reaches the thresholding that presets and comprises:
The intensity of the described signal that receives is lower than and presets thresholding, or the error rate of the described data that receive is higher than and presets thresholding.
3. method according to claim 1 and 2 is characterized in that, in the process of the link-quality between the described mobile node detection and first father node, or described method also comprises when described link-quality reaches the thresholding that presets:
Mobile node scans second father node.
4. method according to claim 3 is characterized in that, described mobile node scans second father node and comprises:
Mobile node detects the beacon signal in the channel;
According to the scanning of the beacon signal in described detected channel father node;
If the father node that scans has only one, determine that then this father node is second father node, if the father node that scans is a plurality of, then obtain the channel information of each father node that scans, according to the best father node of described channel information selective channel situation as second father node.
5. node switching method in the wireless sensor network is characterized in that, comprising:
Receive the request of leaving that mobile node sends;
When described when leaving the described mobile node application change of request expression father node, discharge the network identity of described mobile node and new routing information more.
6. method according to claim 5 is characterized in that,
Described routing iinformation comprises child node quantity, routing table origin identification address information, and routing table stops home address information;
Also comprise after the described more new routing information:
Broadcast described child node quantity, routing table origin identification address information, and routing table stops home address information.
7. node switching method in the wireless sensor network is characterized in that, comprising:
Receive joining request of mobile node transmission;
Join request the described mobile node application of expression when adding network again when described, allow described mobile node to add network and be described mobile node distribution network sign and new routing information more as its child node.
8. method according to claim 7 is characterized in that,
Described routing iinformation comprises child node quantity, routing table origin identification address information, and routing table stops home address information;
Also comprise after the described more new routing information:
Broadcast described child node quantity, routing table origin identification address information, and routing table stops home address information.
9. a wireless sensor network node is characterized in that, comprising:
Detecting unit, be used to detect and first father node between link-quality;
Scanning element is used to scan second father node;
Leave request transmitting unit, be used for when described link-quality reaches the thresholding that presets, leave request to described first father node transmission, described leaving asks to be used for expression application change father node, identifies also more new routing information to ask the described first father node releasing network;
The transmitting element that joins request is used for sending to described second father node and joins request, and described joining request is used to ask described second father node to allow mobile node to add network as its child node, distribution network sign and new routing information more.
10. a wireless sensor network node is characterized in that, comprising:
Leave the request receiving element, be used to receive the request of leaving that mobile node sends;
Releasing unit is used for when described discharging the network identity of described mobile node when leaving the described mobile node application change of request expression father node;
Updating block is used for when described when leaving the described mobile node application change of request expression father node, more new routing information;
Radio unit is used to broadcast the routing iinformation after the renewal.
11. a wireless sensor network node is characterized in that, comprising:
The receiving element that joins request is used to receive joining request that mobile node sends;
Allocation units are used for when the described described mobile node application of expression that joins request adds network again, allow described mobile node to add network and be described mobile node distribution network sign as its child node;
Updating block is used for when the described described mobile node application of expression that joins request adds network again, more new routing information;
Radio unit is used to broadcast the routing iinformation after the renewal.
12. a wireless sensor network is characterized in that, comprising:
Mobile node as claimed in claim 9, first father node as claimed in claim 10, and second father node as claimed in claim 11.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1011241A1 (en) * | 1998-12-11 | 2000-06-21 | Lucent Technologies Inc. | Wireless access to packet-based networks |
| CN1842207A (en) * | 2005-03-31 | 2006-10-04 | 西门子（中国）有限公司 | Distributed multihop wireless network access method |
| CN101237470A (en) * | 2008-03-11 | 2008-08-06 | 西南交通大学 | A car ground broadband access method based on wireless multi-hop network technology |
-
2010
- 2010-04-02 CN CN 201010139838 patent/CN101827416A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1011241A1 (en) * | 1998-12-11 | 2000-06-21 | Lucent Technologies Inc. | Wireless access to packet-based networks |
| CN1842207A (en) * | 2005-03-31 | 2006-10-04 | 西门子（中国）有限公司 | Distributed multihop wireless network access method |
| CN101237470A (en) * | 2008-03-11 | 2008-08-06 | 西南交通大学 | A car ground broadband access method based on wireless multi-hop network technology |
Cited By (34)
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|---|---|---|---|---|
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