CN102387577A - Method and device for adjusting distributed Mesh network power - Google Patents
Method and device for adjusting distributed Mesh network power Download PDFInfo
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- CN102387577A CN102387577A CN2011103183443A CN201110318344A CN102387577A CN 102387577 A CN102387577 A CN 102387577A CN 2011103183443 A CN2011103183443 A CN 2011103183443A CN 201110318344 A CN201110318344 A CN 201110318344A CN 102387577 A CN102387577 A CN 102387577A
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Abstract
The invention discloses a method and a device for adjusting distributed Mesh network power, which are used for determining a power adjusting strategy according to covering power of each node in a network and user quality of a current node so as to realize that after deeply consulting with adjacent nodes, each node determines the power adjusting strategy and ensures that excessive covering or blind covering areas do not happen in the network using process when power adjustment needs to be carried out on the node under the condition that a special controller is not required. A node power adjusting method comprises the following steps: starting modes and obtaining adjacent node information sheets; counting each STA (single threaded apartment) quality value after starting nodes and interrelating a plurality of STAs; starting the nodes, and judging whether power adjustment needs to be carried out on the nodes according to the collected adjacent node information sheets and the collected STA quality values; and selecting a specific power adjusting strategy and carrying out the power adjustment on the nodes according to the power conditions of adjacent nodes if the power adjustment needs to be carried out.
Description
Technical field
The present invention relates to distributed wireless local channel system technical field, particularly the method and apparatus of Mesh network power adjustment.
Background technology
Distributed network is characterized in that any one node all directly links to each other with other two nodes at least, has higher reliability.The Mesh network is an exemplary of distributed network, and it is also claimed " multi-hop (multi-hop) " network, and it is a kind of and the diverse novel radio network technology of conventional wireless network.The Mesh network is the network architecture that can constantly expand dynamically; Any wireless device node can be simultaneously as access point and router; Each node in the network can send and receive wireless signal, each node can with one or more node direct communication.Difference according to each Mesh nodal function; Wireless Mesh netword generally comprises a plurality of Mesh Point (MP) that carry out direct communication with peer node; Have the MP node M esh Access Point (MAP) of access client (STA) function, and be used for the Mesh Portal (MPP) that message gets into or withdraws from.Just because of the Mesh network this based between numerous WAPs of net distribution cooperating with each other and collaborative, make network have the advantage of broadband high-speed and spectral efficient, have dynamic self-organization, self-configuring, outstanding feature such as maintenance certainly.
Yet in practical application; Because the distance between distributed each node of Mesh network is different with communication environments; Cause the transmitting power of node-to-node also to have very big-difference; Thereby making the node power adjustment strategy of different node requirements also have nothing in common with each other, can be a very complicated job from the power adjustment strategy that the network globality is considered so want to work up a cover.Existing distributed wireless network power regulating method has generally all only been considered the routing condition between present node and the one of which neighbor node; Research on Interactive Problem between can not considering in the network between a plurality of nodes better; So just make existing power regulating method lack globality; Can't ensure that overall performance of network reaches optimum, can't avoid network the problem of transition covering and coverage hole to occur.
Summary of the invention
The present invention provides a kind of distributed Mesh network power method of adjustment, and this method has guaranteed that therefore the situation of transition covering and coverage hole can not appear in network node network when the power adjustment takes place.
The method of said distributed Mesh network power adjustment comprises step:
Start node and obtain the neighbor information table;
After a plurality of clients (STA), add up the STA mass value in the association of startup node;
After above-mentioned two steps are finished, start node, judge whether said node carries out the power adjustment according to said neighbor information table of collecting and STA mass value;
Need carry out the power adjustment if judge said node, the power situation of each neighbor node during then said node is Network Based is selected power adjustment strategy and is carried out the power adjustment.
The present invention also provides a kind of equipment of realizing said method simultaneously, and said equipment comprises:
The algorithm initial value is provided with the unit, and this unit is used for the initial value that memory device is set, and this initial value can be reseted according to user's request;
Neighbours' scanning element, this unit are used for collector node and scan the neighbor information that obtains and set up the neighbor information table;
STA data collection module, this unit are used to collect the STA mass value that is associated on the node;
The power adjustment that power adjustment unit, this unit are used to work out the power adjustment strategy of network node and accomplish node.
Mesh network power method of adjustment provided by the invention and device; Through carrying out the user quality evaluation and test to the information gathering of each node in the networking and to the node that needs carry out the power adjustment; Whole consideration network operation state has been worked out the power adjustment strategy that meets the network overall situation.Other features and advantages of the present invention will be set forth in specification subsequently, and, partly from specification, become apparent, perhaps understand by embodiment of the present invention.The object of the invention can be realized through the structure that in the specification of being write, claims and accompanying drawing, is particularly pointed out and obtained with other advantages.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art; To do one to the accompanying drawing of required use in embodiment or the description of the Prior Art below introduces simply; Obviously, the accompanying drawing in describing below is some embodiments of the present invention, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
The distributed Mesh network topological diagram that Fig. 1 provides for the embodiment of the invention;
Fig. 2 is distributed Mesh network node power adjustment schematic flow sheet;
Whether Fig. 2-1 carries out power adjustment flow chart for distributed Mesh network node predicate node;
Fig. 2-2 is after the judgement of distributed Mesh node need be adjusted power, and node is selected the flow chart of power adjustment strategy;
Fig. 3 is distributed Mesh network power adjustment equipment.
Embodiment
For the purpose, technical scheme and the advantage that make the embodiment of the invention is clearer, will combine the accompanying drawing in the embodiment of the invention below, to the technical scheme in the embodiment of the invention carry out clear, intactly describe.
The present invention is at existing distributed network; Particularly on the basis of Mesh network power control method, proposed a kind ofly to decide the control method of power adjustment, thereby be implemented under the situation that need not special controller according to the covering power of each node and each user's mass value; Each node is all when required power is adjusted; After holding consultation with its designated depth neighbours, just determine desired power adjustment strategy, thereby make when node power is adjusted; Overall performance of network is optimized, and the situation that transition covered or existed coverage hole in the network use, do not occur.
The embodiment of the invention provides distributed Mesh network as shown in Figure 1, and is that example is carried out the power adjustment with MAP2.The MAP2 node has the STA access function.The self-contained power adjustment of MAP2 timer carries out the power adjustment in order to regularly to start node.Node has promptly been opened a power adjustment cycle after starting, and at first said node can scan the information of each neighbor node in its place network, and the neighbor node topology information of collecting is updated in the self-contained neighbor information table of said node.
Distributed Mesh network power adjustment flow process is as shown in Figure 2, and its detailed process is following with regard in the present embodiment:
The MAP2 node of S1, startup scans each node in the network, and collects the topology information on each node that responds its broadcasting, in the neighbor information table that these information updatings to node is self-contained.
Relevant STA in the MAP2 node association of S2, startup, and these related STA quality are calculated.
In the embodiment of the invention, the preferential local case of STA quality is to carry out the average Signal to of STA noise ratio (SNR) value and calculate.
The MAP2 node of S3, startup is judged said startup node according to STA mass value on neighbor information table that upgrades and the said node that calculates, and whether needs carry out the power adjustment.
Preferably, in the present embodiment, the STA mass value is the SNR value of said STA.
After S4, the MAP2 node of judging startup need be adjusted power, each neighbor node in the network was given in said node transmitted power adjustment request.After said MAP2 node sends said power adjustment request; Wait for an of short duration cycle; After treating the agreement response of the neighbor node clean culture that all receive the request of said MAP2 node; The MAP2 node works up concrete power adjustment strategy according to each node current power ordering situation in the network, and carries out the power adjustment of node by this strategy.
In the present embodiment, as above each step in the power adjustment process can more specifically be described as following situation:
In the S1 step, be example with MAP2 node shown in Figure 1, its neighbor information surface low journey of MAP2 node updates is following:
Power adjustment timer starts the MAP2 node, makes it begin the information of other node in the scan for networks.
After the MAP2 node started, the scan element that uses Probe request management frames to carry in the power adjustment element was broadcasted transmission to other node in the network, in order to the scanning neighbor information.Power adjustment element is to be stored in the custom field of routing device of manufacturers produce by means of Probe request management frames.The scan element concrete structure defines as follows:
Wherein, this moment, type of message was:
| The type of message value | Describe |
| 0 | Scanning |
The state definition:
" 0 " is for agreeing to reply the scanning response message;
The scanning response message is replied for disagreeing with in " 1 "
After receiving the scan element of MAP2 node transmission, each node can compare the Mesh id field in the scan element in the network, judges whether to respond the described request that MAP2 sends based on field.Need use the Proberesponse management frames to carry scanning response element clean culture in the power adjustment element like identical then this node of Mesh id field of the Mesh ID in the scan element and this node self returns to sending out and opens the MAP2 node of dialogue.Power adjustment element is to leave in the routing device custom field that manufacturer produced with Probe response management frames form equally.Scanning response element structure is following:
Wherein, this moment, type of message was:
| The type of message value | Describe |
| 1 | The scanning response |
The state definition:
" 0 " is for agreeing to reply the scanning response message;
The scanning response message is replied for disagreeing with in " 1 "
After the MAP2 node is received the Probe response that carries scanning response element prime information, upgrade the MAP2 node with the neighbor information table.
Preferably, the neighbor information table updating method described in the embodiment of the invention is:
Three groups of information of record are respectively: index information Index (integer), neighbor information Bssid (20 of character types), signal strength information Power (tape symbol integer) in the neighbor information table
Receive the response message of first neighbor node when said MAP2 node; The source Bssid (1111.1111.1111) that can obtain sending in the response message and the signal strength signal intensity of this message are (39dBm); Then in its neighbor table, table look-up by Bssid; So, then in table, insert this record because be that first can not find out
| | Bssid | Power | |
| 1 | 1111.1111.1111 | -39 |
Receive the response message of second neighbor node when said MAP2 node; The source Bssid (2222.2222.2222) that can obtain sending in the response message and the signal strength signal intensity of this message are (30dBm); Look in the neighbor information table of MAP2 not this record by Bssid; Need this message is newly promoted in the neighbor information table, before increase, the power of this node and the power of first neighbor node are compared, if bigger than it; Then insert the information of this node in first neighbor node data front, concrete outcome is following:
| | Bssid | Power | |
| 1 | 2222.2222.2222 | -39 | |
| 2 | 1111.1111.1111 | -30 |
Receive the response message of the 3rd neighbor node when said MAP2 node; The source Bssid (3333.3333.3333) that can obtain sending in the response message and the signal strength signal intensity of this message are (32dBm); Look in the neighbor information table of MAP2 not this record by Bssid; Need this message is newly promoted in the neighbor information table, with the power of its node earlier with the power ratio of first neighbor node, if littler than it; Again with the power ratio of second neighbor node, if bigger, then insert the information of the 3rd neighbor node in the information bar front of second neighbor node than it, specific as follows:
| | Bssid | Power | |
| 1 | 2222.2222.2222 | -30 | |
| 2 | 3333.3333.3333 | -32 | |
| 3 | 1111.1111.1111 | -39 |
When the nodal information of all response MAP2 scanning all use after as above method is updated in the neighbor information table, this scan period finishes, and the neighbor information table renewal on the said MAP2 node finishes.
After the next scan period begins; MAP2 receives the response message of above-mentioned first, second, third neighbor node again in succession; At this moment, the signal strength signal intensity of the source Bssid (3333.3333.3333) of the 3rd neighbor node receiving of MAP2 and this message (40dBm), is looked into existing record in the neighbor information table of MAP2 this moment by Bssid; But concrete data need be upgraded, and relatively the back is found.The performance number that the 3rd neighbours are ordered little than in the last scan period; Downwards relatively so (if-31dBm during greatly then upwards relatively) than last scan; At this moment; On the power ratio on the 3rd neighbor node one scan in the cycle signal power-39dBm of first node little, then change the neighbor information table on the MAP2 node, specifically describe as follows:
| | Bssid | Power | |
| 1 | 2222.2222.2222 | -30 | |
| 2 | 1111.1111.1111 | -39 | |
| 3 | 3333.3333.3333 | -40 |
In addition; Though described the update method of neighbor information table in the above-described embodiments; But those skilled in the art is to be understood that; The method of any one collection network neighbor information can be used in power regulating method involved in the present invention in the wireless network, thereby more efficiently also carries out the information of neighbor nodes collection work more exactly.
What the S2 step was calculated in the present embodiment is to be connected to each the STA average SNR value that starts node; But be not limited to this example for the present invention; Those skilled in the art equally also can go up video flowing, audio stream through STA, the packet loss separately or the time delay of stream, background stream are calculated the STA quality as possible, and said acquisition STA mass value is applied in the distributed Mesh network power adjustment process of the present invention.
The distributed Mesh node that the S3 step is specially shown in Fig. 2-1 judges whether carry out power adjustment flow chart, concerning the MAP2 node, concrete grammar is following in the present embodiment:
When the power adjustment cycle of MAP2 node arrived, MAP2 sorted each neighbor node MAP1, MAP3, MAP4, MAP5, MAP6 as shown in Figure 1 by its power from big to small.The method of the aforesaid renewal information of neighbor nodes of sort method table; The result who supposes this ordering in the present embodiment is MAP5＞MAP4＞MAP3＞MAP1＞MAP6; Be that MAP5 is the strongest neighbours of signal of MAP2 node, then the embodiment of the invention is calculated the expection transmission power level and the power expection difference of MAP2 node respectively according to following method.Wherein,
Expection transmitting power (dB)=MAP2 node maximum transmission power (dBm)+MAP2 node covers the power (dBm) of the minimum limit value (dBm) of power-neighbours MAP5 node that signal is the strongest), the maximum transmission power of wherein said node is the set point of network when setting up with covering the minimum limit value of power.
And, the power expection difference=expection transmitting power-current transmit power of MAP2 node.
MAP2 node expection power difference with above-mentioned account form draws is judged the variation tendency that power adjustment this moment indicates Flag, and the initial value of said Flag is " 0 ".After comparing, if power expection power difference is greater than expection power difference Upper threshold, then power adjustment sign Flag=Flag+1 with power expection difference and expection difference Upper threshold; If power expection power difference is less than expection difference Lower Threshold, then the power adjustment indicates Flag=Flag-1.If power expection difference explains then that on the expection difference between the Lower Threshold said MAP2 node need not carry out the power adjustment, send out the power adjustment program that opens by this node and stop.Expection power difference described in this method thresholding up and down is the initial value when building network.
According to the situation of change of power adjustment sign Flag, can judge further that failure client's number and failure client lead on the MAP2 node.That is, when power adjustment is masked as Flag=Flag+1 or Flag=Flag-1, relatively can draws failure client number based on the related STA average SNR value of said MAP2 node with the SNR thresholding and lead with the client that fails, wherein,
It is following that the SNR thresholding calculates the merit formula:
The SNR thresholding of MAP2 node (| dB|)=| MAP2 node transmitting power (dBm)-constant (17dBm)-Coverage Profile (dB) |
The value of Coverage Profile can confirm that preferred, 5G frequency range acquiescence Coverage Profile is 12dB in an embodiment of the present invention according to the aerial signal yield value on the node, and the frequency range of 2.4G is 16dB.
Failure client number=all average SNR values than SNR threshold value little be associated in STA number summation on the MAP2 node.
The failure client leads=fails all the STA numbers in client's number/MAP2 node association.
Preferably; The failure client number that calculates with the average SNR value of the related STA of MAP2 node in embodiments of the present invention and failure client lead and lead thresholding (0-100%) with the preset failure client thresholding (0-256) of network with the client that fails respectively and compare; Failure client thresholding initial value is set to 3; It is 20% that the failure client leads thresholding.If the failure client number of said MAP2 node is greater than thresholding 3; If then said power adjustment sign Flag=Flag+ 1. is not more than thresholding; The failure client who then continues more said MAP2 node leads whether lead thresholding 20% greater than the failure client; If greater than, then said power adjustment sign Flag=Flag+ 1.
If these two values all are not more than thresholding, then said power adjustment sign Flag value remains unchanged.
After above-mentioned determination flow process, variation might take place in power adjustment sign, need judge further that power adjustment after changing indicates whether Flag equals " 0 " at this moment.If be " 0 ", confirm that then the MAP2 node need not carry out the power adjustment, this power adjustment EP (end of program), the power adjustment timer on the promptly said MAP2 node makes zero, and each related on said MAP2 node STA average SNR value makes zero.If be not " 0 ", confirm that then said MAP2 node need carry out the power adjustment, the power adjustment strategy that gets into shown in Fig. 2-2 is worked out the S4 step.
S4 step shown in Fig. 2-2; When said node M AP2 need carry out the power adjustment through as above method affirmation after,, select N=4 in the present embodiment to its preceding N position neighbours' clean culture transmitted power adjustment request; Be said node M AP2 MAP1 in network; MAP3, MAP4, MAP5 node transmitted power adjustment request.Be specially said MAP2 node and use Probe request management frames to take in the power adjustment request element adjustment request element to MAP1, MAP3, MAP4, these four nodes of MAP5 are broadcasted transmission.Power adjustment request element structure is following:
Wherein, type of message is:
| The type of message value | Describe |
| 2 | The adjustment request |
The state definition:
" 0 " is for agreeing adjustment request response message;
" 1 " is for disagreeing with adjustment request response message
After the said MAP2 node transmitted power adjustment request, wait for an of short duration scan period, wait for MAP1; MAP3, MAP4, the adjustment request response of these 4 nodes of MAP5; In these 4 nodes, there is any node not make answer for said MAP2 adjustment request; Then said MAP2 node just no longer carries out power adjustment program, restarts the power adjustment timer on this node, and power adjustment Flag makes zero; Each related STA average SNR value of MAP2 node makes zero, and said MAP2 node is sent out this power adjustment request of opening and finished.
After said MAP2 node sends the adjustment request and waits for a scan period; MAP1, MAP3, MAP4; These 4 nodes of MAP5 all use Probe response management frames to carry the clean culture of adjustment request response element and return to sending out and open the said MAP2 node of dialogue; And when all configuration state values not all were " 0 ", said MAP2 node was sent out the power adjustment EP (end of program) of opening, and no longer carries out the power adjustment on the MAP2 node.It is following that element structure is responded in the adjustment request of Probe response:
Wherein, type of message is:
| The type of message value | Describe |
| 3 | Adjustment request response |
The state definition:
" 0 " is for agreeing the adjustment solicited message;
" 1 " is different adjustment request response messages
Work as MAP1; MAP3; When the configuration state value that MAP4, these 4 nodes of MAP5 return said MAP2 node all is " o ", when promptly all agreeing power adjustment request that said MAP2 node sends; Need power adjustment sign Flag is done further judgement, to confirm the specific strategy of power adjustment on the said MAP2 node.
When power adjustment sign Flag greater than zero the time, judge whether the current power of said MAP2 node is MAP2, MAP1; MAP3, MAP4, maximum in these 5 nodes of MAP5; If then the power adjustment process finishes, the power of MAP2 does not change; Restart MAP2 and go up power adjustment timer, power adjustment Flag makes zero, and the average SNR value of each related STA also makes zero.If but the current power of MAP2 is not maximum in these 5 node powers, then the power of said MAP2 node is heightened one-level, strengthens this node power.Concrete power adjustment grade can be redefined for following 8 grades:
| The power rank | Performance number (dBm) | Performance number (mW) |
| 1 | 20 | 100 |
| 2 | 17 | 50 |
| 3 | 14 | 25 |
| 4 | 11 | 12.5 |
| 5 | 8 | 6.5 |
| 6 | 5 | 3.2 |
| 7 | 2 | 1.6 |
| 8 | -1 | 0.8 |
When power adjustment sign Flag less than zero the time; Whether the current power of judging said MAP2 node is the minimum value in these 5 node powers in the network, if then the power adjustment process finishes; The power of said MAP2 node does not change; Restart power adjustment timer on the MAP2 node, power adjustment sign Flag makes zero, and the average SNR value on each related STA also makes zero.If but the current power of said MAP2 node is not that power is minimum in said 5 nodes, then said MAP2 node power is turned down one-level, reduces this node power.Concrete adjustment grade can be participated in equally and got the power grade classification chart in the table.
Fig. 3 is the distributed Mesh network power adjustment of the control that realizes above-mentioned power regulating method equipment structure chart, and this equipment comprises like lower unit:
The algorithm initial value is provided with the unit: this unit is used for preserving the preset all kinds of initial values of distributed Mesh network; Comprise that in the present embodiment failure client thresholding, failure client lead thresholding, expection power difference numerical value such as thresholding, covering power minimum limit up and down; These initial values can be set when building network according to requirements of different users.
Neighbours' scanning element: this unit is used for regularly collecting the neighbor information that scans from each neighbor node, and sets up and upgrade response neighbours' information table.Start node in the said unit and use Probe request management frames to carry out broadcast transmission, initiate neighbor information scanning;
Receive each node of Probe request management frames judges whether need reply this broadcasting, the node that need reply uses Probe response management frames to carry out clean culture and sends the startup node to.After said startup node is received Probe response management frames, each neighbor node signal strength information sorted upgrade the neighbor information table.
STA data collection module: each the STA mass value in this unit collector node association.
Power adjustment unit: this unit is according to the data of neighbor node and the STA mass value that the STA data collection module calculates in the network of neighbours' scanning element collection; After considering the power of each node in the network; Node power adjustment strategy is made a strategic decision, and the node that changes power for needs carries out corresponding power adjustment.Particularly, start in said unit whether the said startup node of Flag variation judgement need carry out the power adjustment and confirm power adjustment strategy in the node power adjustment process.
Preferably, at first, in said power adjustment unit; The expection transmitting power and this node current transmit power that start node are carried out difference calculating; Obtain starting the power expection difference of node, greater than expection difference Upper threshold, then the power adjustment indicates Flag=Flag+1 as if said difference;
If be not more than, whether then continue to judge said difference less than expection difference Lower Threshold, if less than, then the power adjustment indicates Flag=Flag-1;
When the power in above-mentioned steps adjustment was masked as Flag=Flag+1 or Flag=Flag-1, STA mass value on the said node counted failure client's number to said startup node and the failure client leads according to being associated in;
When said failure client number is counted threshold value greater than the failure client of network settings; Power adjustment sign Flag=Flag+1; Judge whether said Flag is " 0 " this moment, if for " 0 " then this node need carry out power adjustment, if " 0 " then power adjustment EP (end of program);
When the failure client who is not more than network settings when said failure client number counts thresholding; Then continue relatively client's mortality and client's mortality thresholding; If client's mortality is greater than client's mortality thresholding, power adjustment sign Flag=Flag+1 judges whether Flag is " 0 " at this moment; If for " 0 " then this node need carry out power adjustment, if " 0 " then power adjustment EP (end of program);
When said failure client number leads the thresholding that all is not more than separately with the failure client; Then the power adjustment indicates Flag=Flag; Judge whether Flag is " 0 " this moment, if for " 0 " then this node need carry out power adjustment, if " 0 " then power adjustment EP (end of program).
Need carry out the power adjustment in case judge said startup node, power adjustment unit begins to carry out following work:
The preceding multidigit node unicast power adjustment request of said startup node this node in network;
The answer of multidigit node before said startup is not received all, then power adjustment EP (end of program);
After the multidigit node is all replied and agreed to start the power adjustment request of node before said, judge power adjustment sign Flag; Disagree with this request if any the node answer, then power adjustment EP (end of program);
When determining said power adjustment sign Flag greater than " 0 ", and the power that starts node be maximum in the multidigit node said before, then said startup node power increasing, if maximum, said startup node power is not adjusted;
When determining aforementioned power adjustment sign Flag less than " 0 ", and the power that starts node is not minimum in the multidigit node said before, and then said startup node power reduces, if minimum said startup node power is not adjusted.
The method that provides through said structure embodiment of the present invention embodiment can realize the Mesh node in the distributed network is carried out the power adjustment; The enforcement of this method of adjustment has fully taken into account current user's on radio frequency environment and the node of overall network mass value; Thereby solved in the network signal covering problem between node, offered the power operational version that network is more optimized.
What should explain at last is: above embodiment is only in order to explaining technical scheme of the present invention, but not to its restriction; Although with reference to previous embodiment the present invention has been carried out detailed explanation, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these are revised or replacement, do not make the spirit and the scope of the essence disengaging various embodiments of the present invention technical scheme of relevant art scheme.
Claims (16)
1. the method for a distributed Mesh network power adjustment is characterized in that said method step comprises:
Start node and obtain the neighbor information table;
After a plurality of clients (STA), add up the STA mass value in the association of startup node;
After above-mentioned two steps are finished, start node, judge whether said node carries out the power adjustment according to said neighbor information table of collecting and STA mass value;
Need carry out the power adjustment if judge said node, the power situation of each neighbor node during then said node is Network Based is selected power adjustment strategy and is carried out the power adjustment.
2. the method for claim 1 is characterized in that, the STA mass value of said startup node refers to the STA average SNR value in the association of said startup node.
3. the method for claim 1 is characterized in that, changes through power adjustment sign Flag and judges whether said startup node need carry out the power adjustment and confirm power adjustment strategy.
4. method as claimed in claim 3 is characterized in that, each node in the said network all has at least one power adjustment timer, starts node and carries out the power adjustment.
5. method as claimed in claim 4 is characterized in that, each node in the said network all has the Probe request and the Probe response management frames of carrying power adjustment element.
6. method as claimed in claim 5 is characterized in that, said startup node uses Probe request management frames to broadcast transmission, thereby initiates neighbor information scanning;
Receive each node of Probe request management frames judges whether need reply this broadcasting; The node that need reply uses Probe response management frames to carry out clean culture and sends the startup node to; After said startup node is received Probe response management frames, each neighbor node signal strength information sorted upgrade the neighbor information table.
7. method as claimed in claim 6 is characterized in that, uses the expection transmitting power of the said startup node of neighbor node power calculation of ordering signal strength signal intensity maximum in the said neighbor information table.
8. method as claimed in claim 7 is characterized in that, said startup node judges that the step of whether carrying out the power adjustment is:
The expection transmitting power of said startup node and this node current transmit power are carried out difference calculating, obtain starting the power expection difference of node, and greater than expection difference Upper threshold, then the power adjustment indicates Flag=Flag+1 as if said difference;
If be not more than, whether then continue to judge said difference less than expection difference Lower Threshold, if less than, then the power adjustment indicates Flag=Flag-1;
When the power in above-mentioned steps adjustment was masked as Flag=Flag+1 or Flag=Flag-1, STA mass value on the said node counted failure client's number to said startup node and the failure client leads according to being associated in;
When said failure client number is counted threshold value greater than the failure client of network settings; Power adjustment sign Flag=Flag+1; Judge whether said Flag is " 0 " this moment, if for " 0 " then this node need carry out power adjustment, if " 0 " then power adjustment EP (end of program);
When the failure client who is not more than network settings when said failure client number counts thresholding; Then continue relatively client's mortality and client's mortality thresholding; If client's mortality is greater than client's mortality thresholding, power adjustment sign Flag=Flag+1 judges whether Flag is " 0 " at this moment; If for " 0 " then this node need carry out power adjustment, if " 0 " then power adjustment EP (end of program);
When said failure client number leads the thresholding that all is not more than separately with the failure client; Then the power adjustment indicates Flag=Flag; Judge whether Flag is " 0 " this moment, if for " 0 " then this node need carry out power adjustment, if " 0 " then power adjustment EP (end of program).
9. method as claimed in claim 4 is characterized in that, after said startup node affirmation needed adjustment power, tactful the confirming of power adjustment comprised the steps:
The preceding multidigit node unicast power adjustment request of said startup node this node in network;
The answer of multidigit node before said startup is not received all, then power adjustment EP (end of program);
After the multidigit node is all replied and agreed to start the power adjustment request of node before said, judge power adjustment sign Flag; Disagree with this request if any the node answer, then power adjustment EP (end of program);
When determining said power adjustment sign Flag greater than " 0 ", and the power that starts node be maximum in the multidigit node said before, then said startup node power increasing, if maximum, said startup node power is not adjusted;
When determining aforementioned power adjustment sign Flag less than " 0 ", and the power that starts node is not minimum in the multidigit node said before, and then said startup node power reduces, if minimum said startup node power is not adjusted.
10. like any described method in the claim 3 to 8; It is characterized in that, after the startup node power adjustment process of said distributed network finishes, restart the power adjustment timer of said node; Power adjustment sign Flag makes zero, and the related STA mass value of said node makes zero.
11. the equipment of the distributed Mesh network power adjustment of control is characterized in that this equipment comprises:
The algorithm initial value is provided with the unit: be used for the initial value that memory device is set, this initial value can be reseted according to user's request;
Neighbours' scanning element: be used for collector node and scan the neighbor information that obtains and set up the neighbor information table;
STA data collection module: be used to collect the STA mass value that is associated on the node;
Power adjustment unit: the power adjustment that is used to work out the power adjustment strategy of network node and accomplishes node.
12. the equipment described in claim 11 is characterized in that, said neighbor information table is made up of index information, neighbor information, signal strength information three parts.
13. the equipment described in claim 11 is characterized in that, said neighbours' scanning element is used to start node and uses Probe request management frames to broadcast transmission, initiates neighbor information scanning;
Receive each node of Probe request management frames judges whether need reply this broadcasting; The node that need reply uses Probe response management frames to carry out clean culture and sends the startup node to; After said startup node is received Probe response management frames, each neighbor node signal strength information sorted upgrade the neighbor information table.
14. the equipment described in claim 11 is characterized in that, said power adjustment unit is used for starting node power adjustment process Flag variation and judges whether said startup node need carry out the power adjustment and confirm power adjustment strategy.
15. the equipment described in claim 14 is characterized in that, said power adjustment unit is used to judge whether said startup node carries out power adjustment, promptly in this unit,
The expection transmitting power of said startup node and this node current transmit power are carried out difference calculating, obtain starting the power expection difference of node, and greater than expection difference Upper threshold, then the power adjustment indicates Flag=Flag+1 as if said difference;
If be not more than, whether then continue to judge said difference less than expection difference Lower Threshold, if less than, then the power adjustment indicates Flag=Flag-1;
When the power in above-mentioned steps adjustment was masked as Flag=Flag+1 or Flag=Flag-1, STA mass value on the said node counted failure client's number to said startup node and the failure client leads according to being associated in;
When said failure client number is counted threshold value greater than the failure client of network settings; Power adjustment sign Flag=Flag+1; Judge whether said Flag is " 0 " this moment, if for " 0 " then this node need carry out power adjustment, if " 0 " then power adjustment EP (end of program);
When the failure client who is not more than network settings when said failure client number counts thresholding; Then continue relatively client's mortality and client's mortality thresholding; If client's mortality is greater than client's mortality thresholding, power adjustment sign Flag=Flag+1 judges whether Flag is " 0 " at this moment; If for " 0 " then this node need carry out power adjustment, if " 0 " then power adjustment EP (end of program);
When said failure client number leads the thresholding that all is not more than separately with the failure client; Then the power adjustment indicates Flag=Flag; Judge whether Flag is " 0 " this moment, if for " 0 " then this node need carry out power adjustment, if " 0 " then power adjustment EP (end of program).
16. the equipment described in claim 15 is characterized in that, said power adjustment unit is used for the startup node that said needs carry out power adjustment and confirms power adjustment strategy, promptly in this unit,
The preceding multidigit node unicast power adjustment request of said startup node this node in network;
The answer of multidigit node before said startup is not received all, then power adjustment EP (end of program);
After the multidigit node is all replied and agreed to start the power adjustment request of node before said, judge power adjustment sign Flag; Disagree with this request if any the node answer, then power adjustment EP (end of program);
When determining said power adjustment sign Flag greater than " 0 ", and the power that starts node be maximum in the multidigit node said before, then said startup node power increasing, if maximum, said startup node power is not adjusted;
When determining aforementioned power adjustment sign Flag less than " 0 ", and the power that starts node is not minimum in the multidigit node said before, and then said startup node power reduces, if minimum said startup node power is not adjusted.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104270807A (en) * | 2014-10-16 | 2015-01-07 | 电子科技大学 | Method for selecting wireless Mesh network transmitting power for three-dimensional scene and equipment |
| CN106304169A (en) * | 2016-10-21 | 2017-01-04 | 黄东 | The business of a kind of wireless mesh network efficiently processes framework |
| CN110022601A (en) * | 2019-04-12 | 2019-07-16 | 海能达通信股份有限公司 | A kind of control method of signal power, device, storage medium and equipment |
| CN116506932A (en) * | 2023-06-28 | 2023-07-28 | 新华三技术有限公司 | Power adjustment method, device, equipment and storage medium |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1355964A (en) * | 1999-04-09 | 2002-06-26 | 艾利森电话股份有限公司 | Adaptive power control in mobile radio communications system |
| CN1852190A (en) * | 2005-08-15 | 2006-10-25 | 华为技术有限公司 | Access-in spot switching-over method and wireless local network using same |
| CN101621315A (en) * | 2008-06-30 | 2010-01-06 | 华为技术有限公司 | Method and device for acquiring/providing power information and processing system |
| CN101986746A (en) * | 2010-07-29 | 2011-03-16 | 北京星网锐捷网络技术有限公司 | Method, system and device for testing wireless local area network (WLAN) |
-
2011
- 2011-10-18 CN CN201110318344.3A patent/CN102387577B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1355964A (en) * | 1999-04-09 | 2002-06-26 | 艾利森电话股份有限公司 | Adaptive power control in mobile radio communications system |
| CN1852190A (en) * | 2005-08-15 | 2006-10-25 | 华为技术有限公司 | Access-in spot switching-over method and wireless local network using same |
| CN101621315A (en) * | 2008-06-30 | 2010-01-06 | 华为技术有限公司 | Method and device for acquiring/providing power information and processing system |
| CN101986746A (en) * | 2010-07-29 | 2011-03-16 | 北京星网锐捷网络技术有限公司 | Method, system and device for testing wireless local area network (WLAN) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104270807A (en) * | 2014-10-16 | 2015-01-07 | 电子科技大学 | Method for selecting wireless Mesh network transmitting power for three-dimensional scene and equipment |
| CN104270807B (en) * | 2014-10-16 | 2017-12-05 | 电子科技大学 | A kind of system of selection of wireless Mesh netword transmission power and equipment for three-dimensional scenic |
| CN106304169A (en) * | 2016-10-21 | 2017-01-04 | 黄东 | The business of a kind of wireless mesh network efficiently processes framework |
| CN110022601A (en) * | 2019-04-12 | 2019-07-16 | 海能达通信股份有限公司 | A kind of control method of signal power, device, storage medium and equipment |
| CN110022601B (en) * | 2019-04-12 | 2022-07-22 | 海能达通信股份有限公司 | Method and device for controlling signal power, storage medium and equipment |
| CN116506932A (en) * | 2023-06-28 | 2023-07-28 | 新华三技术有限公司 | Power adjustment method, device, equipment and storage medium |
| CN116506932B (en) * | 2023-06-28 | 2023-09-26 | 新华三技术有限公司 | Power adjustment method, device, equipment and storage medium |
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|---|---|
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