CN102970773A - Mesh wireless network communication module - Google Patents
Mesh wireless network communication module Download PDFInfo
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- CN102970773A CN102970773A CN2012105214224A CN201210521422A CN102970773A CN 102970773 A CN102970773 A CN 102970773A CN 2012105214224 A CN2012105214224 A CN 2012105214224A CN 201210521422 A CN201210521422 A CN 201210521422A CN 102970773 A CN102970773 A CN 102970773A
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Abstract
The invention relates to a Mesh wireless network communication module which is integrated in a wireless communication terminal. The Mesh wireless network communication module comprises a Mesh chip, a filter, a transceiver, a frequency converter and a power amplifier, wherein the Mesh chip is connected with a main machine of the wireless communication terminal through a universal serial bus (USB) interface and is used for processing a baseband signal and a radio frequency signal, detecting a wireless transmission link and implementing a Mesh algorithm; the filter is used for suppressing an interference signal outside a channel band transmitted by the Mesh chip; the transceiver is connected with the filter and is used for processing an analog baseband signal and a link; the frequency converter is used for performing frequency control on the Mesh chip; and the power amplifier is used for increasing the maximum output function of the Mesh chip. Based on a Mesh mobile self-networking technology, the Mesh wireless network communication module supports multi-skip networking and is adapted to quickly changed network topology so as to provide high and stable access speed; the Mesh wireless network communication module is adapted to various complicated environments; and multiple aspects of broadband communication requirements can be met.
Description
Technical field
The present invention relates to the radio network technique field, particularly relate to a kind of Mesh wireless network communication module.
Background technology
The Mesh wireless network communication module adopts mobile self-networking technology, this technology is " Tactical Internet " that derives from the Technology on Martial Wireless Communication field, but need not to set up the characteristics such as network facilities rapid deployment, survivability be strong because it is distinctive, this network technology has become the core technology of U.S. army's Tactical Internet.Domestic research about mobile self-networking technology still is in the junior stage, and employing is carried out routing addressing in network layer and carried out protocol interaction, can not adapt to the fast variation of topology, high density, large-scale mobile multi-hop MANET.MANET (Mobile Ad hoc Network) fabric study has proposed the agreements such as AODV, DSR, OLSR, TORA, but the property consideration complicated and changeable to radio communication is not enough, can not when supporting high-speed mobile, guarantee lower protocol overhead, can only realize small-scale Mesh networking, differ more with the U.S. army technology.
Therefore, the present invention proposes a kind of Mesh wireless network communication module, it relies on the MANET technology, and take into full account in the situation of existing standard agreement deficiency, solve without the dynamic group net problem under the Central loop by multipath gradient route technology, can adapt to the fast variation of topology, high density, large-scale mobile multi-hop MANET.
Summary of the invention
Technical problem to be solved by this invention provides a kind of Mesh wireless network communication module, is used for solving without visual command, control and communication issue in public network covering area or the destroyed situation of network infrastructure.
The technical scheme that the present invention solves the problems of the technologies described above is as follows: a kind of Mesh wireless network communication module, and it is integrated in the wireless communication terminal, comprises Mesh chip, filter, transceiver, frequency converter and power amplifier;
Described Mesh chip, it links to each other with the main frame of wireless communication terminal by USB interface, for the treatment of baseband signal and radiofrequency signal, detection wireless transmission link, realize the Mesh algorithm;
Described filter, it is connected with described Mesh chip, is used for suppressing the outer interference signal of channel strip of Mesh chip transmission;
Described transceiver, it is connected with described filter, for the treatment of analog baseband signal and link; Here, described transceiver integrates the function of receiver and sender;
Described frequency converter, it is connected with described transceiver and described Mesh chip, is used for Me sh chip is carried out FREQUENCY CONTROL;
Described power amplifier, it is connected with described frequency converter, is used for promoting the maximum work output energy of described Mesh chip.
On the basis of technique scheme, the present invention can also do following improvement.
Further, all included parts of described Mesh wireless network module all are welded on the same pcb board, and described Mesh wireless network module is welded on the mainboard of wireless communication terminal, can arrange according to actual conditions pinout and the Design PCB version size of pcb board.
Further, described Mesh wireless network module also is connected by the CPU of USB interface with the outer net routing module of wireless communication terminal.
Further, described Mesh wireless network module has also defined a radio frequency output port.Here, the definition radio frequency output port is in order to make things convenient for the application of Mesh wireless network module in PDA, and PDA need consider built-in aerial and external antenna interface, and the mode of operation of two kinds of antennas is selected and the AP that switches by PDA realizes the default built-in aerial that then uses.
Further, described Mesh wireless network module also includes radiating module, and this is because the hear rate of Mesh wireless network module mainly is to derive by ground pad, needs the corresponding radiator structure of design.
Further, described Mesh chip comprises for the treatment of baseband signal and radiofrequency signal: the analog basis signal is carried out mould/transformation of variables and steering D/A conversion; Digital baseband signal is carried out Code And Decode; Gather and the monitoring radiofrequency signal.
Further, described Mesh chip be used for to realize that the Mesh algorithm comprises: provide the physical parameter foundation for fast lightweight routing algorithm and adaptive packet data transmit; Finish the physical carrier of eating dishes without rice or wine is monitored, for the Mesh node provides neighbours basis for estimation; Finish physical layer, MAC layer and the partial data link layer functionality of Mesh algorithm.
Further, described transceiver comprises for the treatment of analog baseband signal and link: realize that analog baseband signal is to the frequency spectrum shift of radiofrequency signal; Realize the low-pass filtering function of analog baseband signal, the interference signal that the filtering channel strip is outer; The automatic gain control of realization receiver and the power output of realization transmitting chain are controlled automatically; Realize quick lock in and the switching of frequency source.
Further, the working frequency range after frequency converter carries out variable frequency control is 502MHz to 802MHz.
The invention has the beneficial effects as follows: the invention provides a kind of Me sh wireless network communication module based on the Mesh mobile self-networking technology, can solve the broadband network communication problem under the extreme case that disaster occurs or cover without public network.Because in design system and technical advantage, this module volume is little, low in energy consumption, easy to use, networking flexibility possesses the ability of network self, support the multi-hop networking and adapt to fast-changing network topology, and faster more stable access speed can be provided, so that the present invention can adapt to various complex environments, satisfy many-sided broadband connections demand.
Description of drawings
Fig. 1 is the structural representation of Mesh wireless network communication module of the present invention;
Fig. 2 is the initialization flowchart of Mesh module in the embodiment of the invention one;
Fig. 3 is that the Mesh module is carried out the schematic flow sheet that the IP message receives in the embodiment of the invention one;
Fig. 4 is that the Mesh module is carried out the schematic flow sheet that the IP message sends in the embodiment of the invention one.
Embodiment
Below in conjunction with accompanying drawing principle of the present invention and feature are described, institute gives an actual example and only is used for explaining the present invention, is not be used to limiting scope of the present invention.
As shown in Figure 1, embodiment one has set up a kind of Mesh wireless network communication module, and it is integrated in the wireless communication terminal and uses, and comprises Mesh chip, filter, transceiver, frequency converter and power amplifier.Particularly:
Described Mesh chip, it links to each other with the main frame of wireless communication terminal by USB interface, and concrete function comprises: the analog basis signal is carried out mould/transformation of variables and steering D/A conversion; Digital baseband signal is carried out Code And Decode; Gather and the monitoring radiofrequency signal; For transmitting, fast lightweight routing algorithm and adaptive packet data provide the physical parameter foundation; Finish the physical carrier of eating dishes without rice or wine is monitored, for the Mesh node provides neighbours basis for estimation; Finish physical layer, MAC layer and the partial data link layer functionality of Mesh algorithm.
Described filter, it is connected with described Mesh chip, is used for suppressing the outer interference signal of channel strip of Mesh chip transmission.
Described transceiver, it is connected with described filter, for the treatment of analog baseband signal and link, comprising: realize that analog baseband signal is to the frequency spectrum shift of radiofrequency signal; Realize the low-pass filtering function of analog baseband signal, the interference signal that the filtering channel strip is outer; The automatic gain control of realization receiver and the power output of realization transmitting chain are controlled automatically; Realize quick lock in and the switching of frequency source.In addition, in the present embodiment transceiver is split as receiver and sender uses.
Described frequency converter, it is connected with described transceiver and described Mesh chip, is used for the Mesh chip is carried out FREQUENCY CONTROL, and the working frequency range after the variable frequency control is 502MHz to 802MHz.
Described power amplifier, it is connected with described frequency converter, is used for promoting the maximum work output energy of described Mesh chip.
In addition, included all parts (being Mesh chip, filter, transceiver, frequency converter and power amplifier) of described Mesh wireless network module all are welded on the same pcb board, and described Mesh wireless network module is welded on the mainboard of wireless communication terminal.The overall dimension of Mesh module is that the overall dimension of Mesh card is among the embodiment one: 60 * 50 * 6mm, and corresponding pcb board is thick to be 1mm, it is fixed that each pin definitions can be got according to actual conditions.The performance index of Mesh module are as follows in the present embodiment:
(1) the key technical indexes
Working frequency range: 502MHz～802MHz;
Frequency error :≤± 10 * 10-6;
Channel width: 20MHz
Channel spacing: 5MHz;
Modulation system: OFDM;
54,48,36,24,18,12,9, the 6Mbps self adaptation modulation rate:;
Working method: time division duplex;
Working channel number: 57 channels.
(2) receiver electrical performance indexes
Noise factor :≤6dB
Receiving sensitivity :≤-87dBm(
Representative value);
But minimum demodulation signal to noise ratio requires: 8dB;
Dynamic range: 〉=70dB;
Maximum harmless input: 0dBm;
The accepting state electric current:
(3) transmitter electrical performance indexes
Transmitting power (Max): 25dBm ± 1.5dB
Harmonic emissions :≤-60dB;
Adjacent Channel Power Ratio :≤-45dB(
_ offset);
Operating current:
(4) voltage of Mesh module and power consumption
Mesh module for power supply voltage 3.3V 300mA; 5V (1%～+ 5%) 400mA;
Power consumption: 3W (MAX.);
Heat power consumption: 2.7W (MAX.).
Embodiment one is on the basis of above-mentioned performance index, also provide particularly the application of described Mesh wireless network communication module (hereinafter to be referred as the Mesh module) in wireless communication, it combines with corresponding Mesh module software system, for wireless network terminal provides Mesh wireless communication function and isomery routing function.Described application specifically comprises following step:
One, Mesh module initialization flow process
As shown in Figure 2, the initialization flow process of Mesh module comprises:
1.Mesh drive software monitors the Mesh module and powers up then initialization.
2.Mesh after module initialization is finished, send neighbours' beacon by signaling channel, and receive neighbours' beacon of other Mesh modules, set up neighborhood between the different routers by the exchange of neighbours' beacon; For adapting to fast-changing network configuration, such as high-speed mobile, the cycle of neighbours' beacon is 10-100ms;
3. obtain " Intranet network segment address " from the Intranet routing module, periodically broadcasting " Intranet network segment address " receives " Intranet network segment address " broadcasting from other Mesh modules, sets up corresponding routing relation.
Two, the IP message receives flow process
As shown in Figure 3, IP message reception flow process comprises:
1.Mesh receiving the IP message, module judges that at first whether the IP destination address is the machine Intranet network segment address, is then to be forwarded to the Intranet routing module, otherwise is the Mesh relay messages.
2. at first judge that whether Mesh relaying jumping figure surpasses the upper limit, is then to abandon, otherwise is forwarded to the current best next hop address that the Mesh routing algorithm calculates during the forward relay message.
Three, IP message transmission flow
As shown in Figure 4, IP message transmission flow comprises:
1. the machine produces the IP message, and destination address does not belong to the Intranet network segment of the machine, and table of query and routing obtains the IP default route, i.e. the internal address of the wireless router under the other side.
2. whether inquiry IP default route exists the Mesh route, if there is no then triggers the Mesh route and finds fast; If can't find to arrive the Mesh route of IP default route before overtime, then time-delay is retransmitted.
3. for the Mesh route that exists or pass through to find fast to obtain, in all possible routes, calculate the next hop address of the best, and transmit the IP message; The Mesh route that while Mesh routing algorithm has been set up by the continuous maintenance of Mesh route signaling
The above only is preferred embodiment of the present invention, and is in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. Mesh wireless network communication module, it is integrated in the wireless communication terminal, it is characterized in that, comprises Mesh chip, filter, transceiver, frequency converter and power amplifier;
Described Mesh chip, it links to each other with the main frame of wireless communication terminal by USB interface, for the treatment of baseband signal and radiofrequency signal, detection wireless transmission link and realization Mesh algorithm;
Described filter, it is connected with described Mesh chip, is used for suppressing the outer interference signal of channel strip of Mesh chip transmission;
Described transceiver, it is connected with described filter, for the treatment of analog baseband signal and link;
Described frequency converter, it is connected with described transceiver and described Mesh chip, is used for the Mesh chip is carried out FREQUENCY CONTROL;
Described power amplifier, it is connected with described frequency converter, is used for promoting the maximum work output energy of described Mesh chip.
2. Mesh wireless network module according to claim 1 is characterized in that, all included parts of described Mesh wireless network module all are welded on the same pcb board, and described Mesh wireless network module is welded on the mainboard of wireless communication terminal.
3. Mesh wireless network module according to claim 1 is characterized in that, described Mesh wireless network module also is connected by the CPU of USB interface with the outer net routing module of wireless communication terminal.
4. Mesh wireless network module according to claim 1 is characterized in that, described Mesh wireless network module has also defined a radio frequency output port.
5. Mesh wireless network module according to claim 1 is characterized in that, described Mesh wireless network module also includes radiating module.
6. Mesh wireless network module according to claim 1 is characterized in that, described Mesh chip comprises for the treatment of baseband signal and radiofrequency signal: the analog basis signal is carried out mould/transformation of variables and steering D/A conversion; Digital baseband signal is carried out Code And Decode; Gather and the monitoring radiofrequency signal.
7. Mesh wireless network module according to claim 1 is characterized in that, described Mesh chip be used for to realize that the Mesh algorithm comprises: provide the physical parameter foundation for fast lightweight routing algorithm and adaptive packet data transmit; Finish the physical carrier of eating dishes without rice or wine is monitored, for the Mesh node provides neighbours basis for estimation; Finish physical layer, MAC layer and the partial data link layer functionality of Mesh algorithm.
8. Mesh wireless network module according to claim 1 is characterized in that, described transceiver comprises for the treatment of analog baseband signal and link: realize that analog baseband signal is to the frequency spectrum shift of radiofrequency signal; Realize the low-pass filtering function of analog baseband signal, the interference signal that the filtering channel strip is outer; The automatic gain control of realization receiver and the power output of realization transmitting chain are controlled automatically; Realize quick lock in and the switching of frequency source.
9. Mesh wireless network module according to claim 1 is characterized in that, the working frequency range after frequency converter carries out variable frequency control is 502MHz to 802MHz.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107809265A (en) * | 2017-11-16 | 2018-03-16 | 国网四川省电力公司电力应急中心 | Suitable for the COFDM WiMAX MANET modules under complex environment |
| CN108566626A (en) * | 2018-04-16 | 2018-09-21 | 重庆邮电大学 | A kind of Wireless Mesh emergency communication system and method based on intelligent terminal |
| CN108834176A (en) * | 2018-05-23 | 2018-11-16 | Oppo广东移动通信有限公司 | Aerial signal interferes processing method, device, electronic device and storage medium |
| CN105515972B (en) * | 2015-12-02 | 2018-12-28 | 熊猫电子集团有限公司 | A kind of mobilism ad hoc network wireless communication device |
| CN111246553A (en) * | 2020-01-17 | 2020-06-05 | 广西师范大学 | Power self-adjusting frequency band self-adaptive low-power-consumption wireless ad hoc network method and device |
| CN114553335A (en) * | 2020-11-25 | 2022-05-27 | 上海畅恒自动化设备有限公司 | Fast full-channel power detection circuit structure for self-adaptive channel selection |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105515972B (en) * | 2015-12-02 | 2018-12-28 | 熊猫电子集团有限公司 | A kind of mobilism ad hoc network wireless communication device |
| CN107809265A (en) * | 2017-11-16 | 2018-03-16 | 国网四川省电力公司电力应急中心 | Suitable for the COFDM WiMAX MANET modules under complex environment |
| CN107809265B (en) * | 2017-11-16 | 2020-02-18 | 国网四川省电力公司电力应急中心 | COFDM wireless broadband ad hoc network module suitable for complex environment |
| CN108566626A (en) * | 2018-04-16 | 2018-09-21 | 重庆邮电大学 | A kind of Wireless Mesh emergency communication system and method based on intelligent terminal |
| CN108834176A (en) * | 2018-05-23 | 2018-11-16 | Oppo广东移动通信有限公司 | Aerial signal interferes processing method, device, electronic device and storage medium |
| CN108834176B (en) * | 2018-05-23 | 2022-01-18 | Oppo广东移动通信有限公司 | Antenna signal interference processing method, antenna signal interference processing device, electronic device and storage medium |
| CN111246553A (en) * | 2020-01-17 | 2020-06-05 | 广西师范大学 | Power self-adjusting frequency band self-adaptive low-power-consumption wireless ad hoc network method and device |
| CN114553335A (en) * | 2020-11-25 | 2022-05-27 | 上海畅恒自动化设备有限公司 | Fast full-channel power detection circuit structure for self-adaptive channel selection |
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