CN104838675A - Radio communication system, sink node, and radio communication method - Google Patents
Radio communication system, sink node, and radio communication method Download PDFInfo
- Publication number
- CN104838675A CN104838675A CN201280077249.1A CN201280077249A CN104838675A CN 104838675 A CN104838675 A CN 104838675A CN 201280077249 A CN201280077249 A CN 201280077249A CN 104838675 A CN104838675 A CN 104838675A
- Authority
- CN
- China
- Prior art keywords
- source node
- group
- node
- information
- poll
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/12—Shortest path evaluation
- H04L45/122—Shortest path evaluation by minimising distances, e.g. by selecting a route with minimum of number of hops
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W40/00—Communication routing or communication path finding
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access, e.g. scheduled or random access
- H04W74/04—Scheduled or contention-free access
- H04W74/06—Scheduled or contention-free access using polling
Abstract
A radio communication system for use in a network comprises a plurality of source nodes (2), which are information transmission sources, and a sink node (1) that collects the information, the source nodes (2) and sink node (1) having radio communication functions, if any source node (2) and the sink node (1) cannot directly radio communicate with each other, these source node (2) and sink node (1) being connected to each other by use of radio multi-hop. According to the radio communication system, the sink node (1) comprises a multi-polling control unit that requests the source nodes (2) to transmit information, while the source nodes (2) each comprise a polling response control unit that transmits the information to the sink node (1) in response to the request. The multi-polling control unit in the sink node (1) divides the source nodes (2) into a plurality of groups to spatially avoid radio interferences, selects all or some of the plurality of groups as divided, and sequentially performs, for each selected group, polling for the source nodes (2) in the group, thereby simultaneously or successively performing multi-polling.
Description
Technical field
The present invention relates to the wireless communication system being carried out information by poll.
Background technology
In the past, there are sensor network, self-organizing (adhoc) network, wireless mesh (mesh) network etc., in these networks, respectively there is radio communication function as multiple source node in information transmitting source and the aggregation node of the information of collection, when source node and aggregation node directly cannot carry out radio communication, wireless multi-hop is utilized to connect.In these networks, as collecting the method from the information of multiple source node by aggregation node at short notice, there is the following two kinds method: each source node obtains time synchronized, the timing sending information being staggered, prevent wireless conflict thus from each source node; By making aggregation node send information to each originating node requests successively and make each source node in response to this request and the polling system of echo message, preventing wireless conflict and collecting at short notice.
In the former, in order to prevent wireless conflict and improve collection efficiency, need the precision of the time synchronized improving each source node, and need the scheduling of the transmission timing of each source node also comprising relaying.In addition, in the latter, aggregation node sends information to each originating node requests, each source node is echo message in response to this request, after aggregation node receives response, send information, when carrying out polling system successively to next originating node requests so one by one, neither need the time synchronized of each source node, also do not need the scheduling of the transmission timing of each source node.But, need the message from the such down direction of the information sending request of aggregation node, and intrasystem sending node is always 1 node, therefore, although wireless conflict can not be there is, effectively may not use wireless, allow some leeway in shortening acquisition time.
For these problems, such as in following patent documentation 1, the secondary main website disclosed as intermediate node carries out the technology of the poll (many polls) in 2 stages together with the secondary station as source node and the main website as aggregation node, in the art, secondary main website as intermediate node collects information by poll from multiple secondary station, and is sent after the information taken of the secondary station of subordinate to main website by the poll from main website.Describe based on from main website to the poll of secondary main website with from the many polling system of secondary main website to 2 of the poll of secondary station stages and the conflict prevention method of poll.
Prior art document
Patent documentation
Patent documentation 1: Japanese Unexamined Patent Publication 07-074751 publication
Summary of the invention
The class problem that invention will solve
But, according to above-mentioned existing technology, carry out the packetizing (Region Segmentation) of the secondary station of poll and multiple secondary main website to the conflict prevention method of the poll of secondary station without any description about same secondary main website.Therefore, there is problem as follows: wireless conflict cannot be prevented and the collection efficiency improving information to shorten the acquisition time in entire system.
The present invention proposes in view of foregoing just, its object is to obtain a kind of wireless communication system, this wireless communication system can prevent wireless conflict and the collection efficiency improving information to shorten the acquisition time in entire system.
For the means of dealing with problems
Achieve the goal to solve the above problems, wireless communication system in network of the present invention is made up of multiple source node of the emission source as information and the aggregation node of the information of collection, described source node and described aggregation node have radio communication function, when described source node and described aggregation node directly cannot carry out radio communication, wireless multi-hop is utilized to connect, it is characterized in that, described aggregation node possesses many polling systems unit, described many polling systems unit sends information to described originating node requests, described source node possesses poll response control unit, described poll response control unit is in response to described request, echo message, in described aggregation node, each source node is divided into the multiple groups spatially avoiding air interference by described many polling systems unit, select all or part of group in the multiple groups split, by selected each group, successively poll is carried out to the source node in group, thus simultaneously or carry out many polls continuously.
Invention effect
Wireless communication system of the present invention produces following effect: wireless conflict can be prevented and the collection efficiency improving information to shorten the acquisition time in entire system.
Accompanying drawing explanation
Fig. 1 is the figure of the structure example that wireless communication system is shown.
Fig. 2 is the figure of the distribution that group is shown.
Fig. 3 is the figure of the structure example that aggregation node is shown.
Fig. 4 is the figure of the structure example that source node is shown.
Fig. 5 is the sequential chart of the timing of the polling communication illustrated in the wireless communication system of present embodiment.
Fig. 6 is the sequential chart of the timing that polling communication of the prior art is shown.
Fig. 7 is the figure of an example of the system of selection of the source node illustrated in each group.
Embodiment
Below, with reference to the accompanying drawings, the execution mode of wireless communication system of the present invention is described in detail.In addition, the present invention is not limited to this execution mode.
Execution mode.
Fig. 1 is the figure of the structure example of the wireless communication system that present embodiment is shown.In FIG, wireless communication system by aggregation node 1, source node 2-1a, source node 2-1b, source node 2-1c, source node 2-1d, source node 2-1e ..., source node 2-1n, source node 2-2a, source node 2-2b, source node 2-2c ..., source node 2-2n, source node 2-3a ..., source node 2-3n forms.
Fig. 2 illustrates in the wireless communication system shown in Fig. 1 to be configured with each source node 2 (when not needing to distinguish each source node, as general name, be sometimes labeled as source node 2, source node 2-1, source node 2-2, source node 2-3) position on the figure of distribution of group (or region).In fig. 2,3 groups (or region) are divided into along radial direction centered by aggregation node 1, be divided into 3 groups (or region) along the concentric circles direction centered by aggregation node 1, add up to and be divided into 9 groups (or region).In addition, be described as group in the explanation below, but also can be described as region.
In fig. 2, by in split 9 groups, be set to group (1), group (2), group (3) along concentric circles direction away from the group of aggregation node 1, the group of middle is set to group (4), group (5), group (6), immediate group is set to group (7), group (8), group (9).
In FIG, be connected respectively by wireless link between aggregation node 1 with source node 2-1a, between source node 2-1a with source node 2-1b, between source node 2-1b with source node 2-1c, between source node 2-1c with source node 2-1d, between source node 2-1d with source node 2-1e.In addition, for other source nodes 2-1, be also be connected with aggregation node 1 or adjacent source node 2-1 by wireless link.Thus, from aggregation node 1 respectively to source node 2-1a, source node 2-1b, source node 2-1c, source node 2-1d, source node 2-1e ..., source node 2-1n carries out polling communication.Here, as an example, by the multi-hop communication via source node 2-1a, source node 2-1b, source node 2-1c, source node 2-1d, the polling communication based on polling request 3-1e and poll response 4-1e is carried out from aggregation node 1 couple of source node 2-1e.
Equally, be connected respectively by wireless link between aggregation node 1 with source node 2-2a, between source node 2-2a with source node 2-2b, between source node 2-2b with source node 2-2c.In addition, for other source nodes 2-2, be also be connected with aggregation node 1 or adjacent source node 2-2 by wireless link.Thus, from aggregation node 1 respectively to source node 2-2a, source node 2-2b, source node 2-2c ..., source node 2-2n carries out polling communication.Here, as an example, by the multi-hop communication via source node 2-1a, source node 2-1b, the polling communication based on polling request 3-2c and poll response 4-2c is carried out from aggregation node 1 couple of source node 2-2c.
Equally, be connected by wireless link between aggregation node 1 with source node 2-3a.In addition, for other source nodes 2-3, be also be connected with aggregation node 1 or adjacent source node 2-3 by wireless link.Thus, from aggregation node 1 respectively to source node 2-3a ..., source node 2-3n carries out polling communication.Here, as an example, the polling communication based on polling request 3-3a and poll response 4-3a is carried out from aggregation node 1 couple of source node 2-3a.
In addition, in group (1), group (4), n the source node of source node 2-1 ~ source node 2-n is configured with in group (7), in group (2), group (5), n the source node of source node 2-2 ~ source node 2-n is configured with in group (8), in group (3), group (6), n the source node of source node 2-3 ~ source node 2-n is configured with in group (9), the number of the source node 2 be configured on each fan-shaped region in 3 groups is n, but be not limited to this, the number being configured at the source node 2 on each fan-shaped region in 3 groups can be different.
Then, the structure of each node forming wireless communication system is described.Fig. 3 is the figure of the structure example of the aggregation node 1 that the wireless communication system forming present embodiment is shown.Aggregation node 1 is made up of wireless communication part 11, data reception portion 12, poll response acceptance division 13, many polling systems portion 14, reception information accumulation unit 15, polling request sending part 16 and data sending part 17.
Radio communication is carried out between wireless communication part 11 and source node 2.Data reception portion 12 is carried out demodulation etc. to the wireless signal received and is received process.Poll response acceptance division 13 forwards the information of each source node 2 that poll response comprises to the information of reception accumulation unit 15, forwards poll response to many polling systems portion 14, or receives the situation of poll response to many polling systems portion 14 notice.Many polling systems portion 14, with reference to the reception situation of poll response, carries out the control of the many polls to each source node 2.Reception information accumulation unit 15 accumulates the information of sending from each source node 2.Polling request sending part 16, by the control in many polling systems portion 14, generates polling request.The polling request that data sending part 17 pairs of polling request sending parts 16 generate carries out the transmission processing such as modulating.
Fig. 4 is the figure of the structure example of the source node 2 that the wireless communication system forming present embodiment is shown.Source node 2 is made up of wireless communication part 21, data reception portion 22, polling request acceptance division 23, poll response control part 24, information collection component 25, poll response sending part 26 and data sending part 27.
Radio communication is carried out between wireless communication part 21 and aggregation node 1 or other source nodes 2.Data reception portion 22 is carried out demodulation etc. to the wireless signal received and is received process.Polling request acceptance division 23 forwards polling request to poll response control part 24, or receives the situation of polling request to poll response control part 24 notice.Poll response control part 24, according to the polling request received, carries out the control sending poll response.Information collection component 25 collects the information relevant to this node of giving poll response.Poll response sending part 26 generates poll response, and this poll response comprises the information obtained from information collection component 25.The poll response that data sending part 27 pairs of poll response sending parts 26 generate carries out the transmission processing such as modulating.
Then, the timing of the polling communication in wireless communication system is described.Fig. 5 is the sequential chart of the timing of the polling communication illustrated in the wireless communication system of present embodiment.To show in aggregation node 1, time of reception 104 from the delivery time 103 of the delivery time 102 of the delivery time 101 of polling request 3-1e, polling request 3-2c, polling request 3-3a, poll response 4-3a, the time of reception 105 of poll response 4-2c, the time of reception 106 of poll response 4-1e and polling request 3-1e delivery time 101 to the poll time 107 of the time of reception 106 of poll response 4-1e.
Fig. 6 is the sequential chart of the timing that polling communication of the prior art is shown.Here, for convenience of explanation, illustrate that in the wireless communication system shown in Fig. 1, each node has carried out the situation of polling communication of the prior art.To show in aggregation node 1, time of reception 204 from the delivery time 203 of the delivery time 202 of the delivery time 201 of polling request 3-1e, polling request 3-2c, polling request 3-3a, poll response 4-3a, the time of reception 205 of poll response 4-2c, the time of reception 206 of poll response 4-1e and polling request 3-1e delivery time 201 to the poll time 207 of the time of reception 204 of poll response 4-3a.
Fig. 7 is the figure of an example of the system of selection of the source node 2 illustrated in the wireless communication system Zhong Ge group of present embodiment.Such as, the source node 2 in group is selected the source node 2 started from each group in the direction of the clock successively.
Next, use above-mentioned Fig. 1 ~ 7, the action of the polling communication in the wireless communication system of present embodiment is described.
As shown in Figure 1, in a wireless communication system, centered by aggregation node 1, when being configured with source node 2-1a ~ source node 2-1n, source node 2-2a ~ source node 2-2n, source node 2-3a ~ source node 2-3n, source node 2-1a ~ source node 2-1n, source node 2-2a ~ source node 2-2n, source node 2-3a ~ source node 2-3n, according to the positional information relative to aggregation node 1, are divided into multiple group by many polling systems portion 14 of aggregation node 1.In FIG, relative to aggregation node 1, be divided into 3 groups with 3 dotted lines of radial direction.Here, in order to simplify, have employed straight line, but, straight line can not adopted according to the configuration of each source node 2 actually.
In addition, each source node 2, according to from aggregation node 1 to the hop count information of each source node 2 or routing information or this two information, is divided into multiple group by many polling systems portion 14 of aggregation node 1.In FIG, relative to aggregation node 1, be divided into 3 groups with 3 dotted lines in concentric circles direction.Here, in order to simplify, have employed circle, but, circle can not adopted according to the configuration of each source node 2 actually.
In a wireless communication system, many polling systems portion 14 of aggregation node 1 is 9 groups of 3 × 3 by these automatic Segmentations.As shown in Figure 2, when being divided into group (1), group (2), group (3), group (4), group (5), group (6), group (7), group (8), this 9 groups of group (9), different and the staggered group of radial direction and concentric circles direction is selected in the many polling systems portion 14 carrying out the aggregation node 1 of polling system in this 9 group, thus, many polling systems are performed.
Group (1), group (5), these 3 groups of group (9) are such as selected by many polling systems portion 14 of aggregation node 1.Group (1), group (5), group (9) spatially air interference are each other little, even if the source node 2 in each group carries out wireless transmission one by one, source node 2 air interference each other in same system also can be avoided.Source node 2, by selected each group, is selected respectively one by one by many polling systems portion 14 of aggregation node 1.Here, source node 2-1e, source node 2-2c, source node 2-3a is selected.
In Figure 5, first, aggregation node 1 sends polling request 3-1e from aggregation node 1 to the source node 2-1e of the maximum group (1) of jumping figure at the delivery time 101 of polling request 3-1e.Multi-hop communication to source node 2-1a, source node 2-1b, source node 2-1c, source node 2-1d, source node 2-1e, gradually away from aggregation node 1, therefore, it is possible to avoid the air interference of aggregation node 1 vicinity.
Then, aggregation node 1 after the delivery time 101 of polling request 3-1e promptly (such as, when the access of CSMA/CA (Carrier Sense Multiple Access/Collision Avoidance: Carrier Sense Multiple Access/conflict avoidance) mode, after carrier sense) or based on jump polling request 3-1e away from after the bottom line time of aggregation node 1, at the delivery time 102 of polling request 3-2c, the source node 2-2c to the group (5) of middle sends polling request 3-2c.Spatially avoid interference with polling request 3-1e, multi-hop communication is to source node 2-2a, source node 2-2b, source node 2-2c, gradually away from aggregation node 1, therefore, it is possible to avoid the air interference of aggregation node 1 vicinity, in addition, by away from, air interference can also be avoided between the source node 2 of jump destination.
In addition, aggregation node 1 after the delivery time 102 of polling request 3-2c promptly (such as, when the access of CSMA/CA mode, after carrier sense) or based on jump polling request 3-2c away from after the bottom line time of aggregation node 1, at the delivery time 103 of polling request 3-3a, send the polling request 3-3a from aggregation node 1 to the source node 2-3a of the minimum group (9) of jumping figure.
The source node 2-3a receiving polling request 3-3a returns poll response 4-3a, and this poll response 4-3a carries some information of various mensuration information such as sensor information, power check the value in this node etc.
Aggregation node 1 receives poll response 4-3a in the time of reception 104 of poll response 4-3a.Now, poll response 4-2c, poll response 4-1e not yet turn back near aggregation node 1, therefore, it is possible to avoid air interference.
The source node 2-2c receiving polling request 3-2c returns poll response 4-2c, and this poll response 4-2c carries some information of various mensuration information such as sensor information, power check the value in this node etc.
Aggregation node 1 receives poll response 4-2c in the time of reception 105 of poll response 4-2c.Now, poll response 4-1e not yet turns back near aggregation node 1, therefore, it is possible to avoid air interference.
The source node 2-1e receiving polling request 3-1e returns poll response 4-1e, and this poll response 4-1e carries some information of various mensuration information such as sensor information, power check the value in this node etc.
Aggregation node 1 receives poll response 4-1e in the time of reception 106 of poll response 4-1e.Now, other polling request and poll response can not be sent wirelessly, therefore, it is possible to avoid air interference.
Like this, in aggregation node 1, start to send polling request successively to the source node 2 of the many group of jumping figure, while can avoiding thus spatially disturbing, before the poll response that the polling request received with send at first is corresponding, polling request is sent to multiple source node 2, in addition, while can avoiding interference spatially, receive the poll response from multiple source node 2.Thus, during poll time 107, polling system can be carried out between 3 source nodes 2.
Here, according to Fig. 6, the existing polling communication not carrying out many polls is described.Here, aggregation node 1, during the time of reception 206 from the delivery time 201 of polling request 3-1e to poll response 4-1e, terminates the polling system between source node 2-1e.Then, aggregation node 1, during the time of reception 205 from the delivery time 202 of polling request 3-2c to poll response 4-2c, terminates the polling system between source node 2-2c.Then, aggregation node 1, during the time of reception 204 from the delivery time 203 of polling request 3-3a to poll response 4-3a, terminates the polling system between source node 2-3a.In this case, although temporal air interference can be avoided, cause poll time 207 to become and total ascent time of each poll time between 3 source nodes 2.Therefore, compared with the poll time 107 of present embodiment (with reference to Fig. 5), the Information collection time in entire system is elongated.That is, in the present embodiment, compared with the past, the Information collection time in entire system can be shortened.
In aggregation node 1, by a series of order shown in Fig. 5, after the end of polling(EOP) to source node 2-1e, source node 2-2c, source node 2-3a, then, transfer to the poll of other source nodes.Aggregation node 1, by the group (1) of selected group, group (5), group (9), is selected source node 2 separately one by one, is similarly carried out poll.
By repeatedly performing above action, when completing in each group the poll of the institute's active node 2 wanting poll, aggregation node 1 reselects the different and staggered group in radial direction and concentric circles direction in 9 groups.Such as, select group (2), group (6), these 3 groups of group (7), same by each group (2), group (6), group (7), select source node 2 separately one by one, similarly carry out poll.
By performing the action same with the source node 2 of group (1), group (5), group (9) these 3 groups repeatedly to the source node 2 of group (2), group (6), group (7) these 3 groups, when completing in each group the poll of the institute's active node 2 wanting poll, aggregation node 1 reselects the different and staggered group in radial direction and concentric circles direction in 9 groups.Here, select remaining group (3), group (4), these 3 groups of group (8), equally, by each group (3), group (4), group (8), select source node 2 one by one separately, similarly carry out poll.
Accordingly, in aggregation node 1, the poll of the institute's active node 2 wanting poll can be completed in all groups.
In addition, in present embodiment, as the method for segmentation group, the situation of the positional information, hop count information, routing information etc. that use each source node 2 is illustrated, but is not limited to this.Such as, aggregation node 1 to collect from the adjacent node such as received signal strength of adjacent node by each source node 2 between annoyance level information, according to annoyance level information, so that node large for annoyance level is divided into multiple group as the mode of same group, carry out many polls.
In addition, in the present embodiment, when the poll of source node 2-1e, source node 2-2c, source node 2-3a all terminates, aggregation node 1 then transfers to the poll of other source nodes 2, but is not limited to this.Also can be, after aggregation node 1 receives from the source node 2 of the group of requested transmission information the response returned or when not receiving response after wait-receiving mode time-out, in aggregation node 1, do not wait for the response of the source node 2 from other groups, and individually similarly poll is carried out to next source node 2 by each relevant groups.Such as, also can be, in aggregation node 1, after the time of reception 104 of poll response 4-3a, do not wait for the time of reception 105 of poll response 4-2c, the time of reception 106 of poll response 4-1e, and select other source nodes 2 of group (9), start to carry out poll.
In addition, in the present embodiment, when the poll of source node 2-1e, source node 2-2c, source node 2-3a all terminates, aggregation node 1 then transfers to the poll of other source nodes 2, but is not limited to this.Such as, also can be, with to belong to the many groups of jumping figure source node 2 poll compared with, can complete in shorter time the poll of the source node 2 belonging to the few group of jumping figure, therefore, aggregation node 1 at one time in by being set to comparison to the wrap count of the source node 2 belonging to the few group of jumping figure, to belong to the wrap count of the source node 2 of the many groups of jumping figure many.
In addition, in a wireless communication system, complete in each group want the poll of institute's active node 2 of poll after, radial direction and concentric circles direction in 9 groups are reselected and staggered group, but also can be, such as in selected group for the group of the poll completed the institute's active node 2 wanting poll, aggregation node 1 only selects other groups for replacing this group for this group, comes together to proceed many polls with the group continued in poll.
In addition, when add/eliminating source node 2 in a wireless communication system, aggregation node 1 passes through periodically collection/arithmetic path information, can carry out correcting to make to become all the time best group's segmentation.
In addition, in a wireless communication system, even if when causing jumping figure to there occurs change because of route diversion, aggregation node 1 passes through periodically collection/arithmetic path information, also can carry out correcting to make to become all the time best group's segmentation.
In addition, also can be that the acquisition time of aggregation node 1 to the information of each group measures, when acquisition time is long, reduce the nodes in group, when acquisition time is short, increase the nodes in group, thus, carry out the correction of group's segmentation.
In addition, also can be, aggregation node 1 to collect from the adjacent node such as received signal strength of adjacent node by each source node 2 between annoyance level information, according to annoyance level information, node large for annoyance level to be carried out the correction of group's segmentation as the mode of same group.
In addition, in order to preferentially utilize stable wireless link, before aggregation node 1 carries out poll to the institute's active node 2 in same group, the poll to next group can not be transferred to, namely, after the end of polling(EOP), to the institute's active node 2 in same group, the poll of the source node 2 to next group is transferred to.
In addition, also can be, when variation or the path failure of wireless environment, aggregation node 1 is not when having the information from source node 2 to respond for the information sending request of carrying out to source node 2, immediately or after have passed through the set time or after the poll of the institute's active node 2 in same group is all terminated, to the source node 2 not receiving information response, again carry out poll.
In addition, also can be, when variation or the path failure of wireless environment, aggregation node 1 is not being responded from the information of source node 2 for the information sending request of carrying out to source node 2, even if again carried out poll, when all not having with fixed number of times echo message, or, when not having the source node of echo message many, for such group, be judged as that the wireless conditions near this group is temporarily bad, replace polling object in the lump to carry out poll to another group, that is, the group of polling object is changed.
In addition, aggregation node 1 is such as by each group (1), group (5), group (9), when selecting source node 2 one by one to carry out poll separately, in the figure 7, the source node 2 etc. that clockwise direction in the source node 2 that clockwise direction in the source node 2 that clockwise direction in selection group (1) starts, group (5) starts, group (9) starts, according to positional information, annoyance level information, by each group, the order of the poll of each source node 2 in group is set to consistent direction.Namely, aggregation node 1 selects the source node 2 of the position similar relative to the relative position of this node in each group, then from selected source node 2, select the source node 2 be positioned on consistent direction successively, thus poll is carried out to the source node 2 similar relative to the relative position of this node in each group.Thus, even if when the moment overlap of poll, also can carry out the poll to the low source node 2 of annoyance level each other, the degree interfering with each other that this is lower can be kept.
In addition, the order of the poll to each source node 2 in group is set to the order etc. from the many source node of the jumping figure in group to the few source node of jumping figure by aggregation node 1, is set to consistent direction by each group according to jumping figure.Namely, aggregation node 1 selects the source node 2 that jumping figure is few successively in each group from the source node 2 that jumping figure is many, or the source node 2 that jumping figure is many is selected successively from the source node 2 that jumping figure is few, thus, the source node 2 roughly the same to the sequence of the jumping figure number of times in each group carries out poll.Thus, even if between the source node 2 of spatially easily interference, the poll in the moment responded of also can enough carrying out offseting one from another, can keep the deviation in the moment of response each other.
In addition, in the present embodiment, 3 groups that aggregation node 1 selects radial direction and concentric circles direction different and staggered from the group being divided into 9 to carry out poll, but are not limited to this.Such as, also can be, when the configuration density in the communication zone of source node 2 at wireless communication system is low, reduce the quantity of the group split, all groups are set to object and carry out poll.
As described above, according to the present embodiment, in a wireless communication system, the information such as aggregation node use location information, hop count information, routing information, multiple source node is divided into multiple group to avoid air interference spatially, in addition, from split group, select some groups that radial direction and concentric circles direction are different and staggered, perform many polling systems that the source node being subordinated to the many groups of jumping figure starts to carry out successively poll.Accordingly, spatially air interference is each other little, even if the source node in each group carries out wireless transmission one by one, also the source node air interference each other in same system can be avoided, in addition, collection efficiency from the information of source node can be improved to shorten the acquisition time in entire system.
Label declaration
1 aggregation node; 2,2-1a, 2-1b, 2-1c, 2-1d, 2-1e ..., 2-1n, 2-2a, 2-2b, 2-2c ..., 2-2n, 2-3a ..., 2-3n source node; 11 wireless communication parts; 12 data reception portion; 13 poll response acceptance divisions; The portion of polling system more than 14; 15 receive information accumulation unit; 16 polling request sending parts; 17 data sending parts; 21 wireless communication parts; 22 data reception portion; 23 polling request acceptance divisions; 24 poll response control parts; 25 information collection components; 26 poll response sending parts; 27 data sending parts.
Claims (60)
1. the wireless communication system in a network, it is made up of multiple source node of the emission source as information and the aggregation node of the information of collection, described source node and described aggregation node have radio communication function, when described source node and described aggregation node directly cannot carry out radio communication, wireless multi-hop is utilized to connect, it is characterized in that
Described aggregation node possesses many polling systems unit, and described many polling systems unit sends information to described originating node requests,
Described source node possesses poll response control unit, described poll response control unit in response to described request, echo message,
In described aggregation node, each source node is divided into the multiple groups spatially avoiding air interference by described many polling systems unit, select all or part of group in the multiple groups split, by selected each group, successively poll is carried out to the source node in group, thus simultaneously or carry out many polls continuously.
2. wireless communication system according to claim 1, is characterized in that,
In described aggregation node, described many polling systems unit, for each source node, according to the positional information of this source node relative to this node, is divided into the multiple groups spatially avoiding air interference.
3. wireless communication system according to claim 1, is characterized in that,
In described aggregation node, described many polling systems unit, for each source node, according to from this node to the hop count information of this source node or routing information or this two information, is divided into the multiple groups spatially avoiding air interference.
4. wireless communication system according to claim 1, is characterized in that,
In described aggregation node, described many polling systems unit is for each source node, according to this source node relative to the positional information of this node and from this node to the hop count information of this source node or routing information or this two information, compared with only according to positional information or when being only divided into multiple group according to hop count information or routing information or this two information, be divided into the multiple groups spatially avoiding air interference more subtly.
5. wireless communication system according to claim 1, is characterized in that,
In described aggregation node, described many polling systems unit, for each source node, is collected the annoyance level information between adjacent node according to each source node, is divided into the multiple groups of source node large for annoyance level as same group.
6. the wireless communication system according to claim 3 or 4, is characterized in that,
In described aggregation node, described many polling systems unit, when carrying out poll to the source node of selected multiple groups, carries out many polls with such order: from the poll being polled to the source node to the few group of jumping figure of the source node to the many group of jumping figure.
7. the wireless communication system according to claim 3 or 4, is characterized in that,
In described aggregation node, described many polling systems unit is when carrying out poll to each source node of selected multiple groups, receiving from by after the response of described each source node that sends request or after wait-receiving mode time-out, select next source node to carry out poll by each group when not receiving response.
8. the wireless communication system according to claim 3 or 4, is characterized in that,
In described aggregation node, described many polling systems unit when carrying out poll to each source node of selected multiple groups, the wrap count that the source node being set to the many groups of the wrap count comparison jumping figure that carries out the source node of the few group of jumping figure at one time carries out many at one time in the wrap count of the source node to the few group of jumping figure to be set to the wrap count of the source node of the many groups of comparison jumping figure many.
9. the wireless communication system according to claim 3 or 4, is characterized in that,
In described aggregation node, described many polling systems unit is when carrying out poll to each source node of selected multiple groups, receiving from by after the response of the source node of group that sends request or when not receiving response after wait-receiving mode time-out, do not wait for the response of the source node of the group from other, and select next source node to carry out poll individually by each group.
10. the wireless communication system according to claim 2,3 or 4, is characterized in that,
In described aggregation node, to add in a wireless communication system or when eliminating source node, described many polling systems unit periodically collects union routing information, carry out becoming the correction of the cutting state of best group.
11. wireless communication systems according to claim 3 or 4, is characterized in that,
In described aggregation node, when causing jumping figure to there occurs change in a wireless communication system because of route diversion, described many polling systems unit periodically collects union routing information, carries out becoming the correction of the cutting state of best group.
12. wireless communication systems as claimed in any of claims 2 to 5, is characterized in that,
In described aggregation node, the acquisition time of described many polling systems unit to the information of each group measures, when acquisition time is long, reduce the nodes in group, when acquisition time is short, increase the nodes in group, thus, the correction of group's segmentation is carried out.
13. wireless communication systems according to claim 2,3 or 4, is characterized in that,
In described aggregation node, described many polling systems unit, for each source node, collects the annoyance level information between adjacent node by each source node, carries out the correction split as the group of same group by source node large for annoyance level.
14. wireless communication systems as claimed in any of claims 2 to 5, is characterized in that,
In described aggregation node, described many polling systems unit, in order to preferentially utilize stable wireless link, after the end of polling(EOP) to the institute's active node in same group, transfers to the poll of the source node to next group.
15. wireless communication systems as claimed in any of claims 2 to 5, is characterized in that,
In described aggregation node, when variation or the path failure of wireless environment, when not having the information from this source node to respond for the information sending request issuing each source node, described many polling systems unit immediately or after the set time or after all terminating the poll of other source nodes in same group, carries out poll again to the source node of the response not receiving information.
16. wireless communication systems as claimed in any of claims 2 to 5, is characterized in that,
In described aggregation node, when variation or the path failure of wireless environment, do not responding from the information of this source node for the information sending request issuing each source node, even and if again carried out poll do not have to fixed number of times yet respond when, or when not having the source node of response many, the wireless conditions of the group periphery of described many polling systems unit judges belonging to this source node is temporarily bad, switch polling object in the lump, to carry out poll to other groups.
17. wireless communication systems according to claim 2,4 or 5, is characterized in that,
In described aggregation node, as the order of the poll to each source node in group, described many polling systems unit is according to positional information and annoyance level information, the source node of the position similar relative to the relative position of this node be in group is selected in each group, then select successively to be positioned at the source node on consistent direction from selected source node, thus, in each group, poll is carried out to the source node similar relative to the relative position of this node.
18. wireless communication systems according to claim 3 or 4, is characterized in that,
In described aggregation node, as the order of the poll to each source node in group, described many polling systems unit is according to hop count information, in each group, from the source node that jumping figure is many, select the few source node of jumping figure successively or select the source node that jumping figure is many successively from the source node that jumping figure is few, thus, roughly the same to the sequence of the jumping figure number of times in each group source node carries out poll.
19. wireless communication systems as claimed in any of claims 2 to 5, is characterized in that,
In described aggregation node, described many polling systems unit is when carrying out poll to each source node of selected multiple groups, for the group all terminated the poll of the object source node in group, select other groups replacing this group, for the multiple groups comprising the group reselected, proceed many polls.
20. wireless communication systems according to claim 1, is characterized in that,
Described network is sensor network or self-organizing network or wireless mesh network.
21. 1 kinds of aggregation nodes, it is the aggregation node of the wireless communication system in network, described wireless communication system is made up of multiple source node of the emission source as information and the described aggregation node of the information of collection, described source node and described aggregation node have radio communication function, when described source node and described aggregation node directly cannot carry out radio communication, utilize wireless multi-hop to connect, it is characterized in that
Described aggregation node possesses many polling systems unit, and described many polling systems unit sends information to described originating node requests,
Each source node in response to described request echo message is divided into the multiple groups spatially avoiding air interference by described many polling systems unit, select all or part of group in the multiple groups split, by selected each group, successively poll is carried out to the source node in group, thus, simultaneously or carry out many polls continuously.
22. aggregation nodes according to claim 21, is characterized in that,
Described many polling systems unit, for each source node, according to the positional information of this source node relative to this node, is divided into the multiple groups spatially avoiding air interference.
23. aggregation nodes according to claim 21, is characterized in that,
Described many polling systems unit, for each source node, according to from this node to the hop count information of this source node or routing information or this two information, is divided into the multiple groups spatially avoiding air interference.
24. aggregation nodes according to claim 21, is characterized in that,
Described many polling systems unit is for each source node, according to this source node relative to the positional information of this node and from this node to the hop count information of this source node or routing information or this two information, compared with only according to positional information or when being only divided into multiple group according to hop count information or routing information or this two information, be divided into the multiple groups spatially avoiding air interference more subtly.
25. aggregation nodes according to claim 21, is characterized in that,
Described many polling systems unit, for each source node, is collected the annoyance level information between adjacent node according to each source node, is divided into the multiple groups of source node large for annoyance level as same group.
26. aggregation nodes according to claim 23 or 24, is characterized in that,
Described many polling systems unit, when carrying out poll to the source node of selected multiple groups, carries out many polls with such order: from the poll being polled to the source node to the few group of jumping figure of the source node to the many group of jumping figure.
27. aggregation nodes according to claim 23 or 24, is characterized in that,
Described many polling systems unit is when carrying out poll to each source node of selected multiple groups, receiving from by after the response of described each source node that sends request or after wait-receiving mode time-out, select next source node to carry out poll by each group when not receiving response.
28. aggregation nodes according to claim 23 or 24, is characterized in that,
Described many polling systems unit is when carrying out poll to each source node of selected multiple groups, and the wrap count that the source node of the group that the wrap count comparison jumping figure that the source node being set to group few to jumping figure at one time carries out is many carries out is many.
29. aggregation nodes according to claim 23 or 24, is characterized in that,
In described aggregation node, described many polling systems unit is when carrying out poll to each source node of selected multiple groups, receiving from by after the response of the source node of group that sends request or when not receiving response after wait-receiving mode time-out, do not wait for the response of the source node of the group from other, and select next source node to carry out poll individually by each group.
30. aggregation nodes according to claim 22,23 or 24, is characterized in that,
To add in a wireless communication system or when eliminating source node, described many polling systems unit periodically collects union routing information, carry out becoming the correction of the cutting state of best group.
31. aggregation nodes according to claim 23 or 24, is characterized in that,
When causing jumping figure to there occurs change in a wireless communication system because of route diversion, described many polling systems unit periodically collects union routing information, carries out becoming the correction of the cutting state of best group.
32., according to the aggregation node in claim 22 to 25 described in any one, is characterized in that,
The acquisition time of described many polling systems unit to the information of each group measures, and when acquisition time is long, reduces the nodes in group, when acquisition time is short, increases the nodes in group, thus, carries out the correction of group's segmentation.
33. aggregation nodes according to claim 22,23 or 24, is characterized in that,
Described many polling systems unit, for each source node, collects the annoyance level information between adjacent node by each source node, carries out the correction split as the group of same group by source node large for annoyance level.
34., according to the aggregation node in claim 22 to 25 described in any one, is characterized in that,
Described many polling systems unit, in order to preferentially utilize stable wireless link, after the end of polling(EOP) to the institute's active node in same group, transfers to the poll of the source node to next group.
35., according to the aggregation node in claim 22 to 25 described in any one, is characterized in that,
When variation or the path failure of wireless environment, when not having the information from this source node to respond for the information sending request issuing each source node, described many polling systems unit immediately or after the set time or after all terminating the poll of other source nodes in same group, carries out poll again to the source node of the response not receiving information.
36., according to the aggregation node in claim 22 to 25 described in any one, is characterized in that,
When variation or the path failure of wireless environment, do not responding from the information of this source node for the information sending request issuing each source node, even and if again carried out poll when not responding with also there is no fixed number of times, or, when not having the source node of response many, the wireless conditions of the group periphery of described many polling systems unit judges belonging to this source node is temporarily bad, switches polling object in the lump, to carry out poll to other groups.
37. aggregation nodes according to claim 22,24 or 25, is characterized in that,
As the order of the poll to each source node in group, described many polling systems unit is according to positional information and annoyance level information, the source node of the position similar relative to the relative position of this node be in group is selected in each group, then select successively to be positioned at the source node on consistent direction from selected source node, thus, in each group, poll is carried out to the source node similar relative to the relative position of this node.
38. aggregation nodes according to claim 23 or 24, is characterized in that,
As the order of the poll to each source node in group, described many polling systems unit is according to hop count information, in each group, from the source node that jumping figure is many, select the few source node of jumping figure successively or select the source node that jumping figure is many successively from the source node that jumping figure is few, thus, roughly the same to the sequence of the jumping figure number of times in each group source node carries out poll.
39., according to the aggregation node in claim 22 to 25 described in any one, is characterized in that,
Described many polling systems unit is when carrying out poll to each source node of selected multiple groups, for the group all terminated the poll of the object source node in group, select other groups replacing this group, for the multiple groups comprising the group reselected, proceed many polls.
40. aggregation nodes according to claim 21, is characterized in that,
Described network is sensor network or self-organizing network or wireless mesh network.
41. 1 kinds of wireless communications methods, it is the wireless communications method of the wireless communication system in network, described wireless communication system is made up of multiple source node of the emission source as information and the aggregation node of the information of collection, described source node and described aggregation node have radio communication function, when described source node and described aggregation node directly cannot carry out radio communication, utilize wireless multi-hop to connect, it is characterized in that
Described wireless communications method comprises:
Group's segmentation step, each source node is divided into the multiple groups spatially avoiding air interference by described aggregation node;
Step is selected by group, and described aggregation node selects all or part of group in the multiple groups split;
Polling request step, described aggregation node, by selected each group, asks transmission information successively to the source node in group; And
Poll response step, described source node in response to described request echo message,
Between described aggregation node and described source node, simultaneously or carry out many polls continuously.
42. wireless communications methods according to claim 41, is characterized in that,
In described group segmentation step, described aggregation node, for each source node, according to the positional information of this source node relative to this node, is divided into the multiple groups spatially avoiding air interference.
43. wireless communications methods according to claim 41, is characterized in that,
In described group segmentation step, described aggregation node, for each source node, according to from this node to the hop count information of this source node or routing information or this two information, is divided into the multiple groups spatially avoiding air interference.
44. wireless communications methods according to claim 41, is characterized in that,
In described group segmentation step, described aggregation node is for each source node, according to this source node relative to the positional information of this node and from this node to the hop count information of this source node or routing information or this two information, compared with only according to positional information or when being only divided into multiple group according to hop count information or routing information or this two information, be divided into the multiple groups spatially avoiding air interference more subtly.
45. wireless communications methods according to claim 41, is characterized in that,
In described group segmentation step, described aggregation node collects the annoyance level information between adjacent node according to each source node, is divided into the multiple groups of source node large for annoyance level as same group.
46. wireless communications methods according to claim 43 or 44, is characterized in that,
In described polling request step, described aggregation node, when carrying out poll to the source node of selected multiple groups, carries out many polls with such order: from the poll being polled to the source node to the few group of jumping figure of the source node to the many group of jumping figure.
47. wireless communications methods according to claim 43 or 44, is characterized in that,
In described polling request step, described aggregation node is when carrying out poll to each source node of selected multiple groups, receiving from by after the response of described each source node that sends request or after wait-receiving mode time-out, select next source node to carry out poll by each group when not receiving response.
48. wireless communications methods according to claim 43 or 44, is characterized in that,
In described polling request step, described aggregation node is when carrying out poll to each source node of selected multiple groups, and the wrap count that the source node of the group that the wrap count comparison jumping figure that the source node being set to group few to jumping figure at one time carries out is many carries out is many.
49. wireless communications methods according to claim 43 or 44, is characterized in that,
In described polling request step, described aggregation node is when carrying out poll to each source node of selected multiple groups, receiving from by after the response of the source node of group that sends request or when not receiving response after wait-receiving mode time-out, do not wait for the response of the source node of the group from other, and select next source node to carry out poll individually by each group.
50. wireless communications methods according to claim 42,43 or 44, is characterized in that,
In described group segmentation step, to add in a wireless communication system or when eliminating source node, described aggregation node periodically collects union routing information, carry out becoming the correction of the cutting state of best group.
51. wireless communications methods according to claim 43 or 44, is characterized in that,
In described group segmentation step, when causing jumping figure to there occurs change in a wireless communication system because of route diversion, described aggregation node periodically collects union routing information, carries out becoming the correction of the cutting state of best group.
52., according to the wireless communications method in claim 42 to 45 described in any one, is characterized in that,
In described group segmentation step, the acquisition time of described aggregation node to the information of each group measures, when acquisition time is long, reduce the nodes in group, when acquisition time is short, increase the nodes in group, thus, the correction of group's segmentation is carried out.
53. wireless communications methods according to claim 42,43 or 44, is characterized in that,
In described group segmentation step, described aggregation node, for each source node, collects the annoyance level information between adjacent node by each source node, carries out the correction split as the group of same group by source node large for annoyance level.
54., according to the wireless communications method in claim 42 to 45 described in any one, is characterized in that,
In described polling request step, described aggregation node, in order to preferentially utilize stable wireless link, after the end of polling(EOP) to the institute's active node in same group, transfers to the poll of the source node to next group.
55., according to the wireless communications method in claim 42 to 45 described in any one, is characterized in that,
In described polling request step, when variation or the path failure of wireless environment, when not having the information from this source node to respond for the information sending request issuing each source node, described aggregation node immediately or after the set time or after all terminating the poll of other source nodes in same group, carries out poll again to the source node of the response not receiving information.
56., according to the wireless communications method in claim 42 to 45 described in any one, is characterized in that,
In described polling request step, when variation or the path failure of wireless environment, do not responding from the information of this source node for the information sending request issuing each source node, even and if again carried out poll do not have to fixed number of times yet respond when, or when not having the source node of response many, described aggregation node is judged as that the wireless conditions of the group's periphery belonging to this source node is temporarily bad, switch polling object in the lump, to carry out poll to other groups.
57. wireless communications methods according to claim 42,44 or 45, is characterized in that,
In described polling request step, as the order of the poll to each source node in group, described aggregation node is according to positional information and annoyance level information, the source node of the position similar relative to the relative position of this node be in group is selected in each group, then select successively to be positioned at the source node on consistent direction from selected source node, thus, in each group, poll is carried out to the source node similar relative to the relative position of this node.
58. wireless communications methods according to claim 43 or 44, is characterized in that,
In described polling request step, as the order of the poll to each source node in group, described aggregation node is according to hop count information, in each group, from the source node that jumping figure is many, select the few source node of jumping figure successively or select the source node that jumping figure is many successively from the source node that jumping figure is few, thus, roughly the same to the sequence of the jumping figure number of times in each group source node carries out poll.
59., according to the wireless communications method in claim 42 to 45 described in any one, is characterized in that,
Select in step in described group, described aggregation node, when carrying out poll to each source node of selected multiple groups, for the group all terminated the poll of the object source node in group, selects other groups replacing this group,
In described polling request step, described aggregation node, for the multiple groups comprising the group reselected, proceeds many polls.
60. wireless communications methods according to claim 41, is characterized in that,
Described network is sensor network or self-organizing network or wireless mesh network.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2012/080490 WO2014080522A1 (en) | 2012-11-26 | 2012-11-26 | Radio communication system, sink node, and radio communication method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104838675A true CN104838675A (en) | 2015-08-12 |
| CN104838675B CN104838675B (en) | 2018-04-06 |
Family
ID=50775726
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201280077249.1A Active CN104838675B (en) | 2012-11-26 | 2012-11-26 | Wireless communication system, aggregation node and wireless communications method |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP5826410B2 (en) |
| CN (1) | CN104838675B (en) |
| WO (1) | WO2014080522A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109309606A (en) * | 2017-07-26 | 2019-02-05 | 九阳股份有限公司 | A kind of means of communication of household appliance network |
| CN111599168A (en) * | 2020-04-01 | 2020-08-28 | 广东中科臻恒信息技术有限公司 | Road traffic information acquisition method, equipment and storage medium based on road side unit |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105208620B (en) * | 2015-09-01 | 2018-09-21 | 河海大学常州校区 | A kind of industrial wireless sensor network route constructing method towards transmitting interference |
| JP6972625B2 (en) * | 2017-04-05 | 2021-11-24 | 富士電機株式会社 | Communication parameter setting device, wireless communication system, and communication parameter setting method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009206560A (en) * | 2008-02-26 | 2009-09-10 | Nippon Telegr & Teleph Corp <Ntt> | Sensor data collection system and method, sensor network constructing device and method, program, and recording medium |
| US20110235504A1 (en) * | 2010-03-26 | 2011-09-29 | Oki Electric Industry Co., Ltd. | Wireless communication system and nodes |
| CN102264115A (en) * | 2010-05-28 | 2011-11-30 | 中国科学院声学研究所 | Underwater sound sensor network system and topology initializing method thereof |
| CN102340855A (en) * | 2011-11-15 | 2012-02-01 | 江南大学 | Low energy-consumption data acquisition method based on Zigbee wireless sensor network |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0774751A (en) * | 1993-09-02 | 1995-03-17 | Fuji Electric Co Ltd | Method for preventing contention in multi-polling system |
| JP4747009B2 (en) * | 2006-03-10 | 2011-08-10 | 日本電気通信システム株式会社 | Wireless sensor network route construction method, data collection method, route reconstruction method, wireless sensor network system and program |
| JP5835058B2 (en) * | 2012-03-29 | 2015-12-24 | 富士通株式会社 | Route creation method and communication system |
-
2012
- 2012-11-26 WO PCT/JP2012/080490 patent/WO2014080522A1/en active Application Filing
- 2012-11-26 JP JP2014548416A patent/JP5826410B2/en active Active
- 2012-11-26 CN CN201280077249.1A patent/CN104838675B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009206560A (en) * | 2008-02-26 | 2009-09-10 | Nippon Telegr & Teleph Corp <Ntt> | Sensor data collection system and method, sensor network constructing device and method, program, and recording medium |
| US20110235504A1 (en) * | 2010-03-26 | 2011-09-29 | Oki Electric Industry Co., Ltd. | Wireless communication system and nodes |
| CN102264115A (en) * | 2010-05-28 | 2011-11-30 | 中国科学院声学研究所 | Underwater sound sensor network system and topology initializing method thereof |
| CN102340855A (en) * | 2011-11-15 | 2012-02-01 | 江南大学 | Low energy-consumption data acquisition method based on Zigbee wireless sensor network |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109309606A (en) * | 2017-07-26 | 2019-02-05 | 九阳股份有限公司 | A kind of means of communication of household appliance network |
| CN109309606B (en) * | 2017-07-26 | 2022-03-15 | 九阳股份有限公司 | Communication method for household appliance network |
| CN111599168A (en) * | 2020-04-01 | 2020-08-28 | 广东中科臻恒信息技术有限公司 | Road traffic information acquisition method, equipment and storage medium based on road side unit |
| CN111599168B (en) * | 2020-04-01 | 2021-12-21 | 广东中科臻恒信息技术有限公司 | Road traffic information acquisition method, equipment and storage medium based on road side unit |
Also Published As
| Publication number | Publication date |
|---|---|
| JP5826410B2 (en) | 2015-12-02 |
| JPWO2014080522A1 (en) | 2017-01-05 |
| CN104838675B (en) | 2018-04-06 |
| WO2014080522A1 (en) | 2014-05-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11038767B2 (en) | Discovery of a set of nodes in a network | |
| JP4959842B2 (en) | Method for communicating in a wireless network including a plurality of nodes | |
| EP3298710B1 (en) | Low power sensor node operation for wireless network | |
| US9357583B2 (en) | Gateway node device, sensor node device, and method for controlling active time period | |
| CN101641916B (en) | Removal of ambiguities in forming new piconet controller (pnc) when the current pnc controller is suddenly unavailable | |
| US8619609B2 (en) | Mesh infrastructure utilizing priority repeaters and multiple transceivers | |
| JP2009302694A (en) | Radio communication network system | |
| US20230319526A1 (en) | Wireless sensor system, wireless terminal device, communication control method and communication control program | |
| CN104838675A (en) | Radio communication system, sink node, and radio communication method | |
| CN102811474A (en) | Node apparatus, communication system, and channel selection method | |
| US11223931B2 (en) | Wireless sensor system, wireless terminal device, relay device, communication control method, and communication control program | |
| US20140162715A1 (en) | Channel information providing method, channel information providing database server, and channel information providing system | |
| US9814052B2 (en) | Data distribution system, distribution device, terminal device, and data distribution method providing enhanced communication efficiency | |
| US9615308B2 (en) | System for message acknowledgement and data collection in wireless mesh networks | |
| US20160050040A1 (en) | Radio communication system and radio communication method | |
| EP2582181B1 (en) | Method for reducing a time period to collect data from nodes of a wireless mesh communications network | |
| CN115278577A (en) | Information acquisition method, system, electronic device and storage medium | |
| JP5322006B2 (en) | Time allocation method for radio communication, time allocation device, and radio communication system | |
| CN103068000A (en) | Self-organizing network method and system based on minisatellites | |
| CN104661235A (en) | Networking method and device | |
| CN116566439B (en) | HPLC network optimization method, device, electronic equipment and storage medium | |
| JP2022017360A (en) | Radio communication device, radio communication method, and radio communication system | |
| JP5595982B2 (en) | Wireless communication system and wireless communication method | |
| JP2014175894A (en) | Multi-hop network system and radio station |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |