Summary of the invention
In view of this, WLAN (wireless local area network) and its implementation of the purpose of this invention is to provide a kind of self-organizing, be used to solve because of the AP in the WLAN (wireless local area network) and do not carry out network planning and optimization, thereby cause the wlan network decreased performance, problems such as QoS of customer is not good, the present invention can be under the prerequisite that does not need manual intervention and operation, intelligently finishes the performance parameter self-configuring of new AP automatically and the self-optimizing of the AP that disposed.
In order to reach the foregoing invention purpose, the invention provides the implementation method of a kind of WLAN (wireless local area network) WLAN of self-organizing, it is characterized in that: each user in the WLAN coverage measures transmitting information wirelessly, and metrical information fed back to the WLAN background server by the access point AP in the WLAN (Access Point), the metrical information of each user feedback is collected and analyzed to the WLAN background server, whether judgement exists covers or interference problem, and finish distributing rationally of channel and power automatically, the also automatic configuration of convenient new AP simultaneously is to significantly improve WLAN user's transmission performance, the networking performance of network and robustness; Described method comprises following two operating procedures:
(1) each new access point AP carries out the operation of intelligentized self-configuring performance parameter;
(2) each network element in the WLAN (wireless local area network) is carried out the network self-organization operation periodically, solve because of the user move and on every side AP startup at any time with close the problem that causes the interfere with dynamic between each AP to change.
In order to reach the foregoing invention purpose, the present invention also provides a kind of WLAN (wireless local area network) wlan system of self-organizing, it is characterized in that: described system comprises: the subscriber equipment of setting up measurement module, metrical information report module and adjusting module, set up the access point AP of receiver module, measurement module, metrical information report module and MANET adjusting module, and the WLAN background server of setting up data acquisition module, data-mining module, self-configuring/self-optimizing analysis module and MANET feedback module: each functions of modules of wherein setting up is respectively:
The subscriber equipment measurement module is used for position coordinates, signal strength signal intensity, Signal to Interference plus Noise Ratio and the transmission frame error rate of this subscriber equipment of measurements and calculations, metrical information is sent to measure again to report module;
Subscriber equipment is measured and is reported module, is used for the metrical information that cycle reception measurement module is sent, and reports to the AP receiver module among the WLAN by wireless transmission method;
The subscriber equipment adjusting module is used for the adjustment order that cycle reception AP MANET adjusting module is sent, and according to relevant parameter this subscriber equipment is adjusted;
The AP receiver module is used to receive subscriber equipment and measures the information that the report module sends to AP, is sent to AP again and measures the report module;
AP measurement module: be used for transmitting power and the channel configuration information of this AP of measurements and calculations self, again metrical information be sent to AP and measure the report module;
AP measures and reports module, is used for the information that the cycle receives AP receiver module and AP measurement module, is sent to the data acquisition module of WLAN background server again;
AP MANET adjusting module, be used to receive the suggestion of sending and adjust parameter from the MANET feedback module of WLAN background server, and adjust suggestion according to this each AP is disposed relevant parameter, the order that will comprise this relevant parameter simultaneously sends to the subscriber equipment adjusting module;
Data acquisition module is used to the WLAN background server to receive AP and measures the information of reporting the module transmission, sends data-mining module again to.
Data-mining module, be used to receive all information that user's measurement module and AP measurement module are measured and calculated that comprise of data acquisition module block movement, and the metrical information that wherein is lower than corresponding predetermined threshold value excavated, and then send to self-configuring/self-optimizing analysis module.
Self-configuring/self-optimizing analysis module is used to receive all information that data-mining module transmits, and these information is analyzed again, and provides the suggestion of self-configuring/self-optimizing parameter of each AP, and these suggestions are sent to the MANET feedback module;
The MANET feedback module is used to be received from the suggestion that configuration/the self-optimizing analysis module issues, and is transmitted to the MANET adjusting module of corresponding AP more respectively, carries out optimizing and revising of relevant parameter to instruct each AP.
The WLAN (wireless local area network) of self-organizing of the present invention and its implementation, be because of its plug and play at the AP among the WLAN, there are not reasonable disposition transmitted power and operating frequency, more cannot be optimized problems such as adjustment according to the wireless operational environment automatic phasing related parameter of WLAN, a kind of ad-hoc wireless local area networks implementation method of carrying out the intelligentized network planning, network configuration and the network optimization automatically that proposes, and provide the requirement and the composition of corresponding network equipment.
The invention has the beneficial effects as follows: can reduce the interference of WLAN to a great extent, improve the covering performance of WLAN, strengthen WLAN networking capability and network performance, improve QoS of customer, and remedied the blank of present wireless communication system network self-organizing aspect WLAN, therefore, the present invention has good popularization and application prospect.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, the present invention is described in further detail below in conjunction with drawings and Examples.
Referring to Fig. 1, introduce the topological structure of wlan network and form: comprise Internet network and following network element: WLAN background server, wireless access point AP (Access Point) and user.Wherein, AP connects the WLAN background server and is connected each user by Radio Link by the Internet network respectively.
The implementation method of the WLAN (wireless local area network) WLAN of self-organizing of the present invention is: each user in the WLAN coverage measures transmitting information wirelessly, and metrical information fed back to the WLAN background server by the access point AP in the WLAN, the WLAN background server is collected and the metrical information of analyzing each user feedback, whether judgement exists covers or interference problem, and channel and the power optimization of finishing each AP automatically dispose, be issued to corresponding AP again, the also automatic configuration of convenient new AP simultaneously, thereby significantly improve WLAN user's transmission performance, the networking performance of network and robustness.
Referring to Fig. 2, introduce self-configuring in the implementation method of self organizing function of WLAN (wireless local area network) WLAN of the present invention and two operating procedures of self-optimizing:
Step 1, each new access point AP carries out intelligentized following self-configuring performance parameter operation;
(11) after new AP powers up,, measure this new AP operating frequency and the received power information of other AP on every side, and initiate the authentication request of access security to the WLAN background server earlier as the user of WLAN;
(12) successfully by behind the secure authentication, this new AP to the WLAN background server send comprise its measurement around the access request of the operating frequency of other AP and received power information, this new AP position reference information;
(13) the WLAN background server receives the access request of this new AP, on the reference information basis, position that obtains this new AP transmission, adopts location technology, further this new AP position, location;
(14) WLAN background server this new AP position of basis and the resource allocation information of other AP on every side thereof, calculate and be provided with the channel resource and the transmitting power of optimization for this new AP, and a channel resource and the transmission power information optimized be handed down to this new AP, guarantee the reasonable covering of many AP and reduce interference between each AP;
(15) this new AP carries out the configuration of resource and power according to receiving from the channel resource and the transmission power information of WLAN background server; After finishing its self-configuring performance parameter operation, allow the user in this AP coverage directly to insert, and corresponding data service service is provided.
By aforesaid operations, just can finish the self-configuring process of new AP in the wlan network of self-organizing.
Step 2, each network element in the WLAN (wireless local area network) are carried out following network self-organization operation periodically, solve because of the user move and on every side AP startup at any time with close the problem that causes the interfere with dynamic between each AP to change;
(21) excited users that inserts AP is according to the judgement of the measurement result execution cycle property of the service quality of its current business and wireless signal transmission: if its following three measurement data: have one to set threshold T SI or TSINR less than it among received signal intensity RSSI (Received Signal Strength Indication) or the Signal to Interference plus Noise Ratio SINR (Signal To Interference plus Noise Ratio), when perhaps transmitting frame error rate FER (Frame Error Rate) greater than its setting threshold T FER, this user just triggers the real-time parameter of carrying out the various transmission performances of measurement periodically and (comprising: received signal intensity, Signal to Interference plus Noise Ratio, the transmission frame error rate, the user position, user emission power and the signal strength signal intensity etc. of AP on every side thereof), and metrical information fed back to operation for the AP of its service.
(22) user's metrical information of periodically it being received of each AP is transmitted to the WLAN background server, also the transmission power information of himself is reported the background server to WLAN periodically simultaneously.
(23) the WLAN background server is handled the metrical information that its each AP that receives transmits: handle carrying out average from the user's of identical or close positions metrical information, promptly calculate the wlan network performance that comprises wireless coverage, wireless transmission quality and wireless Signal to Interference plus Noise Ratio respectively, and these network performances are shown in the WLAN background server in conjunction with electronic chart; Simultaneously, the WLAN background server can be known the receiving and transmitting signal intensity of each AP, the channel of use and the configuration information of transmitting power thereof also according to the report of AP.
(24) according to the metrical information of each AP that collects, the WLAN background server is analyzed the network performance of each AP, in case judge when the network performance parameter of certain AP is lower than predetermined threshold value, just triggers the self-optimizing analysis process in its cycle of startup immediately.
(25) the WLAN background server is transmitted to this AP to the self-optimizing analysis result to this AP, after this AP receives corresponding optimization proposed parameter, adjusts its transmitted power and/or channel frequency according to this optimization proposed parameter; Then, return execution in step (21), promptly enter the next wireless measurement cycle.
Referring to Fig. 3, introduce the concrete operations step of the AP self-optimizing among the self-organizing WLAN of the present invention:
(A) trigger the self-optimizing analysis process.
(B) the WLAN background server is assessed the wireless coverage performance of AP, promptly calculates the coverage rate of AP.
(C) whether the coverage rate of judging AP is lower than threshold T CR, if, execution in step (D) then, otherwise, jump to step (F).
(D) judge that the AP current transmit power increases step delta P after, whether be not more than its maximum transmitting power that allows, if, execution in step (E) then, otherwise, jump to step (F).
(E) AP jumps to step (L) after increasing step delta P on the basis of current transmit power, finishes this self-optimizing analytic process.
Need to prove: step (F) is in step (C) or (D) back execution, the performance issue that promptly shows system is not aspect covering, and promptly prioritization scheme can not be started with from improving coverage rate, therefore, should consider the wireless transmission quality of AP, and carry out following corresponding operating:
(F) calculate user's ratio that Signal to Interference plus Noise Ratio or transmission frame error rate are lower than predetermined threshold value, judge again whether user's ratio surpasses default user's ratio threshold T Q, if, execution in step (G) then, otherwise, jump to step (L), finish this self-optimizing analytic process.
(G) whether judge the multiplexing factor of channel frequency between adjacent AP less than 3, if, execution in step (H) then, otherwise jump to step (I).
(H), revise the channel configuration of contiguous AP by the mode of change frequency.
(I) judge whether the bad zone of signal quality is in the intersection overlay area, and promptly this step is used for judging whether system problem belonged to the interference problem that covering causes, if, execution in step (J), otherwise, jump to step (L), finish this self-optimizing analytic process.
(J) judge that the AP current transmit power reduces step delta P after, whether be not less than its minimum transmitting power that allows, if, execution in step (K) then, otherwise, jump to step (L), finish this self-optimizing analytic process.
(K) AP reduces step delta P on the basis of current transmit power.
(L) the self-optimizing analysis result of AP finishes.
Referring to Fig. 4, introducing the structure of each network equipment in the wlan network system of self-organizing of the present invention forms: wherein ustomer premises access equipment will be set up following three modules: measurement module, metrical information are reported module and adjusting module, access point AP will set up following four modules: receiver module, measurement module, metrical information are reported module and MANET adjusting module, and the WLAN background server will be set up following four modules: data acquisition module, data-mining module, self-configuring/self-optimizing analysis module and MANET feedback module.
Below, the corresponding module that heterogeneous networks equipment is set up is elaborated:
Each functions of modules that user side is set up is:
The subscriber equipment measurement module is used for position coordinates, signal strength signal intensity, Signal to Interference plus Noise Ratio and the transmission frame error rate of this subscriber equipment of measurements and calculations, metrical information is sent to measure again to report module.
Subscriber equipment is measured and is reported module, is used for periodically receiving the measurement data of measurement module, and reports to the AP receiver module among the WLAN by wireless transmission method.
The subscriber equipment adjusting module is used for periodically receiving the adjustment order that AP MANET adjusting module is sent, and according to relevant parameter this subscriber equipment is adjusted.
Each functions of modules that the AP end is set up is:
The AP receiver module is used to receive subscriber equipment and measures the information that the report module sends to AP, is sent to AP again and measures the report module.
AP measurement module: be used for transmitting power and the channel configuration information of this AP of measurements and calculations self, again metrical information be sent to AP and measure the report module.
AP measures and reports module, is used for periodically receiving the information of AP receiver module and AP measurement module, is sent to the data acquisition module of WLAN background server again.
AP MANET adjusting module, be used to receive the suggestion of sending and adjust parameter from the MANET feedback module of WLAN background server, and adjust suggestion according to this each AP is disposed the correlated performance parameter, the order that will comprise this correlated performance parameter simultaneously sends to the subscriber equipment adjusting module.
Each functions of modules that WLAN background server end is set up is:
Data acquisition module is used to the WLAN background server to receive AP and measures the information of reporting the module transmission, sends data-mining module again to.
Data-mining module, be used to receive all information that user's measurement module and AP measurement module are measured and calculated that comprise of data acquisition module block movement, and the metrical information that wherein is lower than corresponding predetermined threshold value excavated, and then send to self-configuring/self-optimizing analysis module.
Self-configuring/self-optimizing analysis module is used to receive all information that data-mining module transmits, and these information is analyzed again, and provides the suggestion of self-configuring/self-optimizing parameter of each AP, and these suggestions are sent to the MANET feedback module;
The MANET feedback module is used to be received from the suggestion that configuration/the self-optimizing analysis module issues, and is transmitted to the MANET adjusting module of corresponding AP more respectively, carries out optimizing and revising of relevant parameter to instruct it.
Need to prove that the method for carrying out the network configuration and the network optimization automatically that the present invention proposes not only can be applicable to also can be applicable to radio honeycomb communication systems such as 3G, B3G, 4G in the WLAN (wireless local area network).
The above only is preferred embodiment of the present invention, and is in order to restriction the present invention, within the spirit and principles in the present invention not all, any modification of being made, is equal to replacement, improvement etc., all should be included within the scope of protection of the invention.