CN103139879A - Wireless individual local area network (LAN) communication system - Google Patents
Wireless individual local area network (LAN) communication system Download PDFInfo
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Abstract
The invention provides a wireless individual local area network (LAN) communication system which is applicable to the communication field. The wireless individual LAN communication system comprises a radio-frequency signal processing unit, a base band processing unit, a medium access control processing unit, a signal processing unit, an application interface unit and a power supply unit. The wireless individual LAN communication system is different from the prior art. According to the wireless individual LAN communication system, the radio-frequency signal processing unit, the base band processing unit, the medium access control processing unit, the signal processing unit, the application interface unit and the power supply unit are designed to be in a chip-on system structure and together placed on a single chip, and therefore flexibility of system development is improved, the size is reduced in physical design, power consumption is reduced, manufacture cost is reduced, and an application bottleneck is eliminated.
Description
Technical field
The invention belongs to the communications field, relate in particular to a kind of wireless personal local area network communication system that is applied to ZigBee network.
Background technology
Wireless personal local area network is a kind of PAN (Personal Area Network) that adopts wireless connections, and it is widely used in the Small Extension Node. Communications in the fields such as logistics, medical treatment, monitoring, plantation.That supports wireless personal local area network includes bluetooth, ZigBee, overclocking wave band etc.
The wireless personal local area network communication system that prior art provides is generally to adopt general kernel processor chip to come the discrete signal processing chips such as external radio frequency chip, medium access control (Medium Access Control, MAC) chip, baseband processing chip.Because the hardware of each discrete chip is fixing, limited the flexibility of research and development, usually can only carry out the exploitation of procotol and the exploitation of application layer on the basis of existing hardware and operating system, and can not reduce volume, cost and the power consumption of system on physical Design, make that existing wireless personal local area network communication system volume is large, cost is higher, power consumption is larger, form the bottleneck into the restriction system applies.
Summary of the invention
The object of the present invention is to provide a kind of wireless personal local area network communication system, be intended to solve wireless personal local area network communication system that prior art provides because each chip that it comprises is discrete, make that system bulk is large, cost is higher, power consumption is larger, has limited the problem of system applies.
The present invention is achieved in that a kind of wireless personal local area network communication system, and described system comprises radiofrequency signal processing unit, baseband processing unit, medium access control processing unit, signal processing unit, application interface unit and power supply unit;
Described radiofrequency signal processing unit, baseband processing unit, medium access control processing unit, signal processing unit, application interface unit and power supply unit are placed on one chip jointly.
In the embodiment of the present invention, radiofrequency signal processing unit, baseband processing unit, medium access control processing unit, signal processing unit, application interface unit and power supply unit adopt the system on chip structure design, jointly be placed on one chip, thereby improved the flexibility of system research and development, reduced on physical Design system volume, reduced system power dissipation, and cost of manufacture reduces, and has eliminated the application bottleneck of wireless personal local area network communication system.
Description of drawings
Fig. 1 is the structure chart of the wireless personal local area network communication system that provides of the embodiment of the present invention;
Fig. 2 is the structure chart of application interface unit in Fig. 1;
Fig. 3 is the structure chart of signal processing unit in Fig. 1;
Fig. 4 is the structure chart of Fig. 1 medium access control processing unit;
Fig. 5 is the structure chart of baseband processing unit in Fig. 1;
Fig. 6 is the structure chart of radiofrequency signal processing unit in Fig. 1;
Fig. 7 is the structure chart of power supply unit in Fig. 1.
Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, is not intended to limit the present invention.
The problem that the existing volume of wireless personal local area network communication system is large, power consumption is large that provides in order to overcome prior art, the wireless personal local area network communication system that the embodiment of the present invention provides has adopted the SOC (system on a chip) architecture design, the purpose that reduce volume to reach, reduces power consumption.
Fig. 1 shows the structure of the wireless personal local area network communication system that the embodiment of the present invention provides, this wireless personal local area network communication system is the wireless personal local area network communication system that is applied to ZigBee network, for convenience of explanation, only show the part relevant to the embodiment of the present invention.
The wireless personal local area network communication system that the embodiment of the present invention provides comprises: radiofrequency signal processing unit 15, baseband processing unit 14, medium access control processing unit 13, signal processing unit 12, application interface unit 11 and power supply unit 16.
On the one hand, after radiofrequency signal processing unit 15 will convert digital baseband signal to from the radiofrequency signal that exterior antenna receives, carrying out demodulation, solution by 14 pairs of these digital baseband signals of baseband processing unit extends to decoding and processes, and the digital signal that will obtain after processing sends to signal processing unit 12 by medium access control processing unit 13, after this digital signal that 12 pairs of medium access control processing units of signal processing unit 13 send is used processing, send corresponding applying unit to by application interface unit 11.
on the other hand, applying unit can also send signal to be transmitted to signal processing unit 12 by application interface unit 11, after 12 pairs of these signals to be transmitted of signal processing unit carry out the respective application processing, digital signal by medium access control processing unit 13 after baseband processing unit 14 transmission processings, the encoding digital signals that 14 pairs of medium access control processing units of baseband processing unit 13 send, obtain digital baseband signal after spread spectrum and modulation treatment, and send this digital baseband signal to radiofrequency signal processing unit 15, after converting this baseband signal to radiofrequency signal by radiofrequency signal processing unit 15, send by exterior antenna.
Unlike the prior art, in the embodiment of the present invention, radiofrequency signal processing unit 15, baseband processing unit 14, medium access control processing unit 13, signal processing unit 12, application interface unit 11 and power supply unit 16 adopt the system on chip structure design, jointly be placed on one chip, thereby improved the flexibility of system research and development, reduced on physical Design system volume, reduced system power dissipation, and cost of manufacture reduces, and has eliminated the application bottleneck of wireless personal local area network communication system.
Fig. 2 shows the structure of application interface unit 11 in Fig. 1.
Particularly, application interface unit 11 can comprise: the first analog-to-digital conversion module 111 after being used for converting the signal to be transmitted that applying unit sends to digital signal, sends signal processing unit 12 to; The first D/A converter module 112 after the digital signal after being used for signal processing unit 12 is processed converts analog signal to, sends corresponding applying unit to; And/or be connected to universal input/output interface module 113 between signal processing unit 12 and corresponding applying unit.
Fig. 3 shows the structure of signal processing unit 12 in Fig. 1.
Particularly, signal processing unit 12 can comprise: flash memory module 123; Static memory module 124; Signal processing module 121 is used for the digital signal that medium access control processing unit 13 sends is used processing, and carries out respective application and process using signal to be transmitted that the unit sends by application interface unit 11; SOC (system on a chip) bus module 122 is used for connecting flash memory module 123, static memory module 124, signal processing module 121, application interface unit 11 and medium access control processing unit 13.
Wherein, the preferred employing model of signal processing unit 12 is the processor of ARM926; The preferred Advanced High-performance Bus (Advanced High performance Bus, AHB) that adopts of SOC (system on a chip) bus module 122.
Fig. 4 shows the structure of Fig. 1 medium access control processing unit 13.
Particularly, medium access control processing unit 13 can comprise: Co-processor Module 132, at least one accepting state machine 131 and at least one transmission state machine 133; Co-processor Module 132 enables control signal according to the state machine that signal processing unit 12 sends, control the digital signal after corresponding accepting state machine 131 receives baseband processing unit 14 processing, and this digital signal that will be received by corresponding accepting state machine 131 sends to signal processing unit 12, and control the corresponding signal to be transmitted that sends after state machine 133 receives signal processing unit 12 processing, and send to baseband processing unit 14 by this signal to be transmitted that corresponding transmission state machine 133 will receive.
Fig. 5 is the structure of baseband processing unit 14 in Fig. 1.
Particularly, baseband processing unit 14 can comprise: Signal coding module 141 sends after being used for the encoding digital signals that medium access control processing unit 13 sends is processed; Spread spectrum module 142 is used for the digital signal that Signal coding module 141 sends is carried out sending after spread processing; The first modulation module 143 after being used for the digital signal that spread spectrum module 142 sends is carried out modulation treatment, sends to radiofrequency signal processing unit 15 with the baseband signal that obtains.
Fig. 6 is the structure of radiofrequency signal processing unit 15 in Fig. 1.
Particularly, radiofrequency signal processing unit 15 can comprise: the second D/A converter module 151, and be used for that the digital baseband signal that baseband processing unit 14 transmits is carried out digital-to-analogue conversion and process, obtain exporting after analog baseband signal; The second modulation module 152 is used for the analog baseband signal of the second D/A converter module 151 outputs is carried out modulation treatment; Signal amplification module 153 is used for the signal that obtains after the second modulation module 152 modulation treatment is amplified processing, obtains radiofrequency signal and sends by exterior antenna;
Radiofrequency signal processing unit 15 can also comprise: radiofrequency signal amplification module 154 is used for and will amplifies processing from the radiofrequency signal that exterior antenna receives; The second demodulation module 155, the radiofrequency signal after being used for radiofrequency signal amplification module 154 is amplified is carried out demodulation process; Intermediate-freuqncy signal amplification module 156 is used for that the signal after the second demodulation module 155 demodulation process is carried out intermediate frequency and amplifies processing; The second analog-to-digital conversion module 157 after the signal after being used for the 156 intermediate frequencies amplifications of intermediate-freuqncy signal amplification module are processed converts digital baseband signal to, sends to baseband processing unit 14 with the digital baseband signal that obtains.
in order further to reduce system power dissipation, in the embodiment of the present invention, power supply unit 16 also has the function of low-power dissipation power supply management, at this moment, radiofrequency signal processing unit 15 can also comprise: energy detection module 158, channel energy for detection of the signal after the second demodulation module 155 demodulation process, and the testing result signal is sent to power supply unit 16, power supply unit 16 is according to the testing result signal that receives, control radiofrequency signal processing unit 15, baseband processing unit 14, medium access control processing unit 13, signal processing unit 12, and application interface unit 11 enters minimum mode of operation or recovers normal mode of operation.
Fig. 7 shows the structure of power supply unit 16 in Fig. 1.
particularly, power supply unit 16 can comprise: battery 161, battery management module 162 is used for battery 161 is carried out the electric energy outgoing management, Voltage stabilizing module 163 after being used for converting the magnitude of voltage that battery 161 is exported to corresponding magnitude of voltage, is exported to radiofrequency signal processing unit 15, baseband processing unit 14, medium access control processing unit 13, signal processing unit 12 and application interface unit 11, low power consumption control module 164, be used for the testing result signal according to energy detection module 158 transmissions, by controlling battery management module 162 and Voltage stabilizing module 163, and then control Voltage stabilizing module 163 to corresponding radiofrequency signal processing unit 15, baseband processing unit 14, medium access control processing unit 13, signal processing unit 12 or application interface unit 11 output voltage values, so that radiofrequency signal processing unit 15, baseband processing unit 14, medium access control processing unit 13, signal processing unit 12 and application interface unit 11 enter minimum operational module or recover normal mode of operation, thereby complete the function of low-power dissipation power supply management.
In the embodiment of the present invention, radiofrequency signal processing unit 15, baseband processing unit 14, medium access control processing unit 13, signal processing unit 12, application interface unit 11 and power supply unit 16 adopt the system on chip structure design, jointly be placed on one chip, thereby improved the flexibility of system research and development, reduced on physical Design system volume, reduced system power dissipation, and cost of manufacture reduces, and has eliminated the application bottleneck of wireless personal local area network communication system.
The above is only preferred embodiment of the present invention, not in order to limiting the present invention, all any modifications of doing within the spirit and principles in the present invention, is equal to and replaces and improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
1. a wireless personal local area network communication system, is characterized in that, described system comprises radiofrequency signal processing unit, baseband processing unit, medium access control processing unit, signal processing unit, application interface unit and power supply unit;
Described radiofrequency signal processing unit, baseband processing unit, medium access control processing unit, signal processing unit, application interface unit and power supply unit are placed on one chip jointly.
2. wireless personal local area network communication system as claimed in claim 1, it is characterized in that, after described radiofrequency signal processing unit will convert digital baseband signal to from the radiofrequency signal that exterior antenna receives, by described baseband processing unit, described digital baseband signal is carried out demodulation, solution extends to decoding and processes, and the digital signal that will obtain after processing sends to described signal processing unit by described medium access control processing unit, after the digital signal that described signal processing unit sends described medium access control processing unit is used processing, send corresponding applying unit to by described application interface unit.
3. wireless personal local area network communication system as claimed in claim 2, it is characterized in that, described applying unit sends signal to be transmitted by described application interface unit to described signal processing unit, after described signal processing unit carries out the respective application processing to described signal to be transmitted, digital signal by described medium access control processing unit after the described baseband processing unit transmission processing, the encoding digital signals that described baseband processing unit sends described medium access control processing unit, obtain baseband signal after spread spectrum and modulation treatment, and send described baseband signal to described radiofrequency signal processing unit, after converting described baseband signal to radiofrequency signal by described radiofrequency signal processing unit, send by described exterior antenna.
4. wireless personal local area network communication system as claimed in claim 3, is characterized in that, described application interface unit comprises:
The first analog-to-digital conversion module after being used for converting the signal described to be transmitted that described applying unit sends to digital signal, sends described signal processing unit to;
The first D/A converter module after being used for converting the digital signal after described signal processing unit processes to analog signal, sends corresponding described applying unit to; And/or
Be connected to the universal input/output interface module between described signal processing unit and corresponding described applying unit.
5. wireless personal local area network communication system as claimed in claim 3, is characterized in that, described signal processing unit comprises:
Flash memory module;
The static memory module;
Signal processing module is used for the digital signal that described medium access control processing unit sends is used processing, and the signal described to be transmitted that described applying unit sends by described application interface unit is carried out respective application process;
The SOC (system on a chip) bus module is used for connecting described flash memory module, static memory module, signal processing module, application interface unit and medium access control processing unit.
6. wireless personal local area network communication system as claimed in claim 5, is characterized in that, described signal processing unit is that model is the processor of ARM926; Described SOC (system on a chip) bus module is Advanced High-performance Bus.
7. wireless personal local area network communication system as claimed in claim 3, is characterized in that, described medium access control processing unit comprises: Co-processor Module, at least one accepting state machine and at least one transmission state machine;
Described Co-processor Module enables control signal according to the state machine that described signal processing unit sends, control the digital signal after corresponding described accepting state machine receives described baseband processing unit processing, and the described digital signal that will be received by corresponding described accepting state machine sends to described signal processing unit; And control signal described to be transmitted after corresponding described transmission state machine receives described signal processing unit processes, and the signal described to be transmitted that will be received by corresponding described transmission state machine sends to described baseband processing unit.
8. wireless personal local area network communication system as claimed in claim 3, is characterized in that, described baseband processing unit comprises:
The Signal coding module sends after the encoding digital signals that is used for that described medium access control processing unit is sent is processed;
Spread spectrum module is used for the digital signal that described Signal coding module sends is carried out sending after spread processing;
The first modulation module after being used for the digital signal that described spread spectrum module sends is carried out modulation treatment, sends to described radiofrequency signal processing unit with the baseband signal that obtains;
Synchronous search module is used for the synchronous digital baseband signal that extracts after described radiofrequency signal processing unit is changed;
The channel parameter estimation module, the digital baseband signal that is used for described synchronous search module is extracted carries out sending after channel parameter estimation;
The first demodulation module is used for the digital baseband signal that described channel parameter estimation module sends is carried out sending after demodulation process;
The despreading module is used for the digital baseband signal that described the first demodulation module sends is carried out sending after despreading is processed;
Channel decoding module, for processing that the digital baseband signal of described despreading module transmission is decoded, and the digital signal that will obtain after processing sends to described medium access control processing unit.
9. wireless personal local area network communication system as claimed in claim 3, is characterized in that, described radiofrequency signal processing unit comprises:
The second D/A converter module is used for that the digital baseband signal that described baseband processing unit transmits is carried out digital-to-analogue conversion and processes, and obtains exporting after analog baseband signal;
The second modulation module is used for the described analog baseband signal of described the second D/A converter module output is carried out modulation treatment;
The signal amplification module is used for the signal that obtains after described the second modulation module modulation treatment is amplified processing, obtains radiofrequency signal and sends by described exterior antenna;
The radiofrequency signal amplification module is used for and will amplifies processing from the radiofrequency signal that described exterior antenna receives;
The second demodulation module, the radiofrequency signal after being used for described radiofrequency signal amplification module is amplified is carried out demodulation process;
The intermediate-freuqncy signal amplification module is used for that the signal after described the second demodulation module demodulation process is carried out intermediate frequency and amplifies processing;
The second analog-to-digital conversion module after the signal after being used for described intermediate-freuqncy signal amplification module intermediate frequency amplification is processed converts digital baseband signal to, sends to described baseband processing unit with the digital baseband signal that obtains.
10. wireless personal local area network communication system as claimed in claim 9, it is characterized in that, described radiofrequency signal processing unit also comprises: energy detection module, for detection of the channel energy of the signal after described the second demodulation module demodulation process, and the testing result signal is sent to described power supply unit;
Described power supply unit is controlled described radiofrequency signal processing unit, baseband processing unit, medium access control processing unit, signal processing unit and application interface unit and is entered minimum mode of operation or recover normal mode of operation according to the described testing result signal that receives.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107015940A (en) * | 2015-11-12 | 2017-08-04 | 三星电子株式会社 | Multicomputer system and its method comprising the memory shared by multiprocessor |
| CN109035670A (en) * | 2018-10-12 | 2018-12-18 | 湖北旭兴达科技有限公司 | A kind of fire alarm system and its address coding method |
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| CN1893382A (en) * | 2005-06-01 | 2007-01-10 | 美国博通公司 | Method and apparatus for providing wireless communication |
| CN1893299A (en) * | 2005-06-01 | 2007-01-10 | 美国博通公司 | Wireless communication method and system |
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| CN1893382A (en) * | 2005-06-01 | 2007-01-10 | 美国博通公司 | Method and apparatus for providing wireless communication |
| CN1893299A (en) * | 2005-06-01 | 2007-01-10 | 美国博通公司 | Wireless communication method and system |
| CN102067689A (en) * | 2008-06-16 | 2011-05-18 | 马维尔国际贸易有限公司 | Short-range wireless communication |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107015940A (en) * | 2015-11-12 | 2017-08-04 | 三星电子株式会社 | Multicomputer system and its method comprising the memory shared by multiprocessor |
| CN107015940B (en) * | 2015-11-12 | 2021-12-21 | 三星电子株式会社 | Multiprocessor system including memory shared by multiple processors and method thereof |
| CN109035670A (en) * | 2018-10-12 | 2018-12-18 | 湖北旭兴达科技有限公司 | A kind of fire alarm system and its address coding method |
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