CN104093173A - Wireless channel distribution method based on MESH network - Google Patents
Wireless channel distribution method based on MESH network Download PDFInfo
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- CN104093173A CN104093173A CN201410368551.3A CN201410368551A CN104093173A CN 104093173 A CN104093173 A CN 104093173A CN 201410368551 A CN201410368551 A CN 201410368551A CN 104093173 A CN104093173 A CN 104093173A
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Abstract
The invention discloses a wireless channel distribution method based on a MESH network and an access and roaming optimization method based on a WLAN under uplink and downlink asymmetric wireless link conditions. On the basis that AP and STA air interface standard information processes are not changed, optimization is conducted on an AP side, so that the problem that an STA is in a dead link state for a long time is completely solved, and switch efficiency of the STA and stability of STA data service are greatly promoted under a complex WLAN networking environment.
Description
Technical field
The present invention relates to a kind of wireless channel technology, relate in particular to a kind of wireless channel distribution method based on MESH network.
Background technology
At present, more common MESH network, in order to improve the service traffics of wireless network integral body, common a plurality of different channel working groups of static programming in advance, for example: shown in Figure 1, suppose at arbitrary region memory seven MESH base stations, i.e. base station 1, base station 2, base station 3, base station 4, base station 5, base station 6 and base station 7, conventionally in the network planning, in base station 1, base station 2 and base station 3 planning Yi Ge working groups, and jointly use channel A to communicate, in base station 4 and base station 5 planning Yi Ge working groups, and jointly use channel B to communicate, in base station 6 and base station 7 planning Yi Ge working groups, and jointly use channel C to communicate, in this region, effectively working channel just has three like this, be channel A, channel B and channel C, therefore,, than using single working channel, service traffics just can promote more than 3 times, if MESH number of base stations continues to promote, the working channel number of planning is along with the lifting of number of base stations also promotes again, service traffics promote amplitude also can further be increased, yet, the multi channel mode of operation of this static programming, in base station all under static or semi-static state time, can very simply realize communication and efficiency very high, but, once base station is in mobile status, the working channel of static programming just cannot effectively carry out work so, for example, shown in Figure 2, once after base station movement, distance between base station 1 and base station 2 and base station 3 is elongated, thereby cannot set up wireless connections, and other base station is because the channel that static channel planning produces isolates, cannot set up wireless connections with base station 1, therefore, relay function in MESH network also cannot come into force, between base station 1 and base station 2 and base station 3 in wireless lost contact state, thereby cause this network planning failure.In supporting the MESH network of Move Mode, for fear of above-mentioned network planning failure, the Trunk Characteristics of MESH network is come into force, a working channel of the common use of all base stations common planning in a MESH network area, can avoid isolating due to the mobile channel occurring of MESH base station like this.Yet, use a working channel, although solved the base station UNICOM problem in MESH network area, but service traffics but significantly reduce, therefore, when run into service traffics large or to business Qos(service and quality) application of having relatively high expectations, the MESH network of single channel just can not satisfy the demands.
In sum, existing wireless channel distribution method, while being used multichannel, while there is mobile base station in MESH network, the situation that there will be wireless lost contact between base station, and while using single channel, cannot meet again the application that service traffics are large or business Qos is had relatively high expectations.
Summary of the invention
The object of the invention is to, for the existing defect of prior art, provides a kind of wireless channel distribution method, when guaranteeing MESH network link, promotes the wireless transmission capacity of MESH network.
To achieve these goals, the invention provides a kind of wireless channel distribution method based on MESH network, comprise the steps
Wireless channel is divided, and the wireless channel after division comprises a control channel and many data transmission channels; Described control channel is for the signalling channel between source base station and target BS, and described many data transmission channels are the transmission for data as alternative data transmission channel;
When source base station receives after the data sending request of upper layer application transmission, by described control channel, to target BS, send RTS data sending request signaling, and according to NAV list, select, when the lightest data transmission channel of preload is as alternative data transmission channel, to carry described alternative data transmission channel simultaneously;
When target BS receives after the RTS data sending request signaling of source base station transmission, according to local NAV list, judge that whether the described alternative data transmission channel carrying in RTS cell is available, if available, to source base station, reply CTS and allow transfer of data signaling, and be switched to described alternative data transmission channel, wait for the business datum of reception sources base station;
The CTS that receives target BS when source base station allows transfer of data to confirm signaling, source base station and target BS confirmation are using described alternative data transmission channel as current formal data transmission channel, and source base station is switched to current formal data transmission channel from described control channel;
Source base station sends Data business datum to target BS, target BS receives the Data business datum from source base station, after target BS judgement data receiver, Data business datum is uploaded to upper layer application, by current data transmission channel, to source base station, send DataRsp data answering simultaneously, when source base station receives after the DataRsp data answering of target BS transmission, think and success of transfer of data described data transmission channel is switched to described control channel.
Also comprise that source base station is in the step of signaling buffer area search buffer memory signaling, and buffer memory signaling is sent to target BS by described control channel.
Also comprise that source base station, in the step of the business datum of business datum buffer area search buffer memory, if there is the business datum of buffer memory, starts business datum transmission flow.
Also comprise that target BS is in the step of signaling buffer area search buffer memory signaling, and buffer memory signaling is sent to source base station by described control channel.
Compared with prior art, beneficial effect of the present invention is: because the present invention's planning has a control channel and many data transmission channels, during use, all MESH base station is all used a control channel in advance jointly, this is similar to the MESH network of single channel, thereby can well solve the UNICOM's problem between each base station in mobile MESH, in addition, the business data transmission of large flow relies on data channel to complete, and a control channel delivery flow rate requires lower control signal and the negotiation signaling of transfer of data, the business datum of so large flow is evenly distributed in many data transmission channels of planning in advance completely to be transmitted, from and guaranteed the service transmission bandwidth mobile MESH network, therefore, greatly be better than traditional multichannel planing method.
Accompanying drawing explanation
Fig. 1 is static network frame diagram in prior art.
Fig. 2 is dynamic network frame diagram in prior art.
Fig. 3 is data transmission flow figure of the present invention.
Fig. 4 is data receiver flow chart of the present invention.
Embodiment
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with drawings and embodiments, the present invention is described in further details.At this, exemplary embodiment of the present invention and explanation are used for explaining the present invention, but not as a limitation of the invention.
Shown in Fig. 3 and Fig. 4, a kind of wireless channel distribution method based on MESH network of the present invention, comprises the steps:
Wireless channel is divided, and the wireless channel after division comprises a control channel and many data transmission channels; Described control channel is for the signalling channel between source base station and target BS, and described many data transmission channels are the transmission for data as alternative data transmission channel;
When source base station receives after the data sending request of upper layer application transmission, by described control channel, to target BS, send RTS data sending request signaling, and according to NAV list, select, when the lightest data transmission channel of preload is as alternative data transmission channel, to carry described alternative data transmission channel simultaneously;
When target BS receives after the RTS data sending request signaling of source base station transmission, according to local NAV list, judge that whether the described alternative data transmission channel carrying in RTS cell is available, if available, to source base station, reply CTS and allow transfer of data signaling, and be switched to described alternative data transmission channel, wait for the business datum of reception sources base station;
The CTS transfer of data that receives target BS when source base station is confirmed after signaling, source base station and target BS confirmation are using described alternative data transmission channel as current formal data transmission channel, and source base station is switched to current formal data transmission channel from described control channel;
Source base station sends Data business datum to target BS, target BS receives the Data business datum from source base station, after target BS judgement data receiver, Data business datum is uploaded to upper layer application, by current data transmission channel, to source base station, send DataRsp data answering simultaneously, when source base station receives after the DataRsp data answering of target BS transmission, think and success of transfer of data described data transmission channel is switched to described control channel.
Also comprise that source base station is in the step of signaling buffer area search buffer memory signaling, and buffer memory signaling is sent to target BS by described control channel.
Also comprise that source base station, in the step of the business datum of business datum buffer area search buffer memory, if there is the business datum of buffer memory, starts business datum transmission flow.
Also comprise that target BS is in the step of signaling buffer area search buffer memory signaling, and buffer memory signaling is sent to source base station by described control channel.
In addition, the present invention also provides a kind of channel dividing arrangement, comprising: data link module 101, dispatching management module 102, wireless channel administration module 103, community logic manage module 104 and safety management module 105;
Wherein: data link module 101 is for interpolation and the parsing of transmitted data protocol frame head, effect is to guarantee that transfer of data delivers according to the order of sequence, guarantees the transmitting of data simultaneously;
Dispatching management module 102 is distributed the control of sequential for the forwarding of signaling and storage, the control of data transmission utilization measure, the control of message transmission rate, data transfer bandwidth;
Wireless channel administration module 103 is for being divided into wireless channel control channel and data transmission channel, the quantity of control channel is one, the quantity of data transmission channel is many, when data send, according to the NAV of data transmission channel, select when the lightest channel of preload is as current data transmission channel;
Community logic manage module 104 is for dynamically controlling radius of society according to the node density of MESH network, when effect is to guarantee between each node data high-speed transmitting, less to the interference of wireless device around;
Safety management module 105, for by node authentication and signaling integrity protection, is forbidden disabled user's access.
The foregoing is only better embodiment of the present invention; protection scope of the present invention is not limited with above-mentioned execution mode; in every case the equivalence that those of ordinary skills do according to disclosed content is modified or is changed, and all should include in the protection range of recording in claims.
Claims (4)
1. the wireless channel distribution method based on MESH network, is characterized in that, comprises the steps:
Wireless channel is divided, and the wireless channel after division comprises a control channel and many data transmission channels; Described control channel is for the signalling channel between source base station and target BS, and described many data transmission channels are the transmission for data as alternative data transmission channel;
When source base station receives after the data sending request of upper layer application transmission, by described control channel, to target BS, send RTS data sending request signaling, and according to NAV list, select, when the lightest data transmission channel of preload is as alternative data transmission channel, to carry described alternative data transmission channel simultaneously;
When target BS receives after the RTS data sending request signaling of source base station transmission, according to local NAV list, judge that whether the described alternative data transmission channel carrying in RTS cell is available, if available, to source base station, replying CTS allows transfer of data to confirm signaling, and be switched to described alternative data transmission channel, wait for the business datum of reception sources base station;
The CTS that receives target BS when source base station allows transfer of data to confirm signaling, source base station and target BS confirmation are using described alternative data transmission channel as current formal data transmission channel, and source base station is switched to current formal data transmission channel from described control channel;
Source base station sends Data business datum to target BS, target BS receives the Data business datum from source base station, after target BS judgement data receiver, Data business datum is uploaded to upper layer application, by current data transmission channel, to source base station, send DataRsp data answering simultaneously, when source base station receives after the DataRsp data answering of target BS transmission, think and success of transfer of data described data transmission channel is switched to described control channel.
2. wireless channel distribution method according to claim 1, is characterized in that: also comprise that source base station is in the step of signaling buffer area search buffer memory signaling, and buffer memory signaling is sent to target BS by described control channel.
3. wireless channel distribution method according to claim 1, is characterized in that: also comprise that source base station, in the step of the business datum of business datum buffer area search buffer memory, if there is the business datum of buffer memory, starts business datum transmission flow.
4. wireless channel distribution method according to claim 1, is characterized in that: also comprise that target BS is in the step of signaling buffer area search buffer memory signaling, and buffer memory signaling is sent to source base station by described control channel.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107040962A (en) * | 2017-04-18 | 2017-08-11 | 江苏中科羿链通信技术有限公司 | A kind of adaptive wireless channel negotiation method |
| CN112004257A (en) * | 2020-07-31 | 2020-11-27 | 海尔优家智能科技（北京）有限公司 | Network element communication method and communication system |
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| CN102088704A (en) * | 2011-01-20 | 2011-06-08 | 北京交通大学 | Dual radio multi-channel data interaction method and system of wireless Mesh network |
| CN102111772A (en) * | 2009-12-24 | 2011-06-29 | 杨槐 | Multi-channel control technology for wireless Mesh network |
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Patent Citations (5)
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| EP1566944A1 (en) * | 2004-02-20 | 2005-08-24 | Broadcom Corporation | Wireless communication between stations of differing protocols |
| US20080225796A1 (en) * | 2007-03-17 | 2008-09-18 | Qualcomm Incorporated | Handover in wireless communications |
| CN102111772A (en) * | 2009-12-24 | 2011-06-29 | 杨槐 | Multi-channel control technology for wireless Mesh network |
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| CN107040962A (en) * | 2017-04-18 | 2017-08-11 | 江苏中科羿链通信技术有限公司 | A kind of adaptive wireless channel negotiation method |
| CN112004257A (en) * | 2020-07-31 | 2020-11-27 | 海尔优家智能科技（北京）有限公司 | Network element communication method and communication system |
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