CN202353824U - Chip and vehicle-mounted device based on WAVE (Wireless Access in Vehicle Environment) standard - Google Patents
Chip and vehicle-mounted device based on WAVE (Wireless Access in Vehicle Environment) standard Download PDFInfo
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- CN202353824U CN202353824U CN 201120473562 CN201120473562U CN202353824U CN 202353824 U CN202353824 U CN 202353824U CN 201120473562 CN201120473562 CN 201120473562 CN 201120473562 U CN201120473562 U CN 201120473562U CN 202353824 U CN202353824 U CN 202353824U
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Abstract
The utility model discloses a chip and a vehicle-mounted device based on a WAVE (Wireless Access in Vehicle Environment) standard, which are used for realizing the chip which adopts the WAVE standard and is used for a vehicle-mounted device unit in an integrated way, increasing the product integrated level, shortening the developing time, saving the production cost, and reducing the difficulty and the complexity of developing while increasing the product quality. The chip comprises a master control module, a radio frequency communication module, a modulation-demodulation module, an encoding-and-decoding module and a power supply module. The utility model further discloses a vehicle-mounted device based on the WAVE standard.
Description
Technical field
The utility model relates to the intelligent transport technology field, relates in particular to a kind of based on automobile-used environment cordless communication network (Wireless Access in Vehicle Environment, WAVE) chip of standard and mobile unit.
Background technology
In order to realize intelligent transportation system (Intelligent Transportation System; ITS) (Wireless Access in Vehicle Environment, WAVE) standard comprises two sub-criteria: IEEE 802.11p standard and IEEE 1609 standards to use the automobile-used environment cordless communication network that proposes.IEEE 802.11p standard definition IEEE 802.11 (also claiming Wi-Fi) technology is used for the high-speed radio environment mechanism of automobile and truck applications.IEEE 1609 standards are divided into the standard of four segmentations, are respectively: 1609.1 are responsible for resource management; 1609.2 be responsible for security service; 1609.3 be responsible for network layer and transport layer management; 1609.4 be responsible for the multichannel management.
Under the ITS applied environment; Roadside unit (Road Side Unit, RSU) or other service providing device (On Board Unit OBU) provides when service to the mobile unit unit; Communicating pair all adopts the standard protocol stack shown in accompanying drawing 1 to carry out data communication; Wherein, the high-rise standard of application layer (Application Layer) (Higher Layer Standards) correspondence 1609.1, the security service in the management plane (Security Services) corresponding 1609.2; WAVE management entity in the management plane (WAVE Management Entity; WME) corresponding 1609.3, comprise again among the WME expansion of MAC layer management entity (MAC Layer Management Entity Extension), MAC layer management entity (MAC Layer Management Entity, MLME) and PLME (Physical Layer Management Entity; PLME); UDP/TCP, IPV6 and WAVE short-message protocol that transport layer (Transport Layer) and network layer comprise, and the logic link layer in the data link layer (Data Link Layer) (Logical Link Layer, LLC) corresponding 1609.3; Multichannel operation (Multichannel Operation) correspondence 1609.4 that belongs to data link layer, and MAC and physical layer are for 802.11P.Its application model is served provider memory contents and service data on backstage computer or server shown in accompanying drawing 2; The service supplier gives RSU through communication network with transfer of data, and RSU receives and serves the data that the provider sends; RSU adopts the WAVE agreement to give physical layer with transfer of data, sends to OBU through wireless communication network interface; OBU adopts the WAVE standard to receive data equally, at last data content is transferred to final user through user interface (like display device LCD etc.).
Though; Have the OBU of the employing WAVE standard that adopts the design of separate type components and parts at present in the world, but cause consistency not high owing to adopt the separate type components and parts to design, the separate type components and parts realize that cost is high; Product development cycle is long, and makes the production procedure complicacy of OBU product.
The utility model content
The utility model provides a kind of chip and mobile unit based on the WAVE standard; Adopt the chip of WAVE standard and be used for mobile unit in order to adopt integrated mode to realize; Improve the integrated level of product; Shorten the development time, save production cost, when improving the quality of products, reduce development difficulty and complexity.
The concrete technical scheme that the utility model embodiment provides is following:
A kind of chip based on automobile-used environment cordless communication network WAVE standard comprises main control module, radio-frequency communication module, modulation module, coding/decoding module and power module:
Main control module; Connect coding/decoding module and power module respectively; Issue the power management instruction to said power module, and need send first signal of remote equipment to, and receive the secondary signal that said coding/decoding module processing is passed through by the remote equipment transmission to said coding/decoding module transmission;
Radio-frequency communication module connects the modulation module, and first signal after the modulation that reception modulation module is sent is transmitted to remote equipment via antenna, and receives the secondary signal that remote equipment sends via antenna;
The modulation module; Connect radio-frequency communication module and coding/decoding module respectively; First signal behind the coding that the reception coding/decoding module sends; First signal behind the coding is sent to radio-frequency communication module after modulating, and the received RF communication module secondary signal that receives via antenna of sending, said secondary signal is carried out sending to coding/decoding module after the demodulation;
Coding/decoding module; Connect modulation module and main control module respectively; Receive said first signal that main control module sends, to sending to the modulation module after said first signal encoding, and the secondary signal after the demodulation that the modulation demodulation module is sent sends to main control module after decoding;
Power module; Connect radio-frequency communication module, modulation module, coding/decoding module and main control module respectively; The said power management instruction that the reception main control module issues is operated accordingly, is radio-frequency communication module, modulation module, coding/decoding module and main control module power supply.
A kind of mobile unit based on automobile-used environment cordless communication network WAVE standard comprises: said chip, and the ancillary equipment that is connected with at least one interface that said chip comprises.
Based on technique scheme; In the present embodiment; Comprise the chip of main control module, radio-frequency communication module, modulation module, coding/decoding module and power management module through design, issue the power management instruction to power module, and to carry out signal mutual with coding/decoding module through main control module; Accept the signal that main control module sends through coding/decoding module; Carry out carrying out demodulation by the modulation module after the encoding process, launch through antenna by radio-frequency communication module again, and by behind the antenna receiving signal; Sending the modulation module to through radio-frequency communication module carries out demodulation, sends to main control module by after the coding/decoding module decoding again; Receive power management instruction the carrying out corresponding operating that main control module issues through power module, be radio-frequency communication module, modulation module, coding/decoding module and main control module power supply, thereby can carry out the reception and the transmission of signal through the chip that integration mode is realized; Realization is communicated by letter with roadside unit or other vehicles, thereby can this chip be used for intelligent transportation system.And the chip of the employing WAVE standard that realizes through integrated mode can improve the integrated level of product, shortens the development time, saves production cost, and when improving the quality of products, reduces development difficulty and complexity.
Description of drawings
Fig. 1 is a WAVE standard protocol stack sketch map;
Fig. 2 is the communication pattern sketch map based on the WAVE standard;
Fig. 3 is based on the chip system Organization Chart of WAVE standard in the present embodiment;
Fig. 4 is a main control module Organization Chart in the present embodiment;
Fig. 5 is the detailed functional block diagram of master control submodule in the present embodiment;
Fig. 6 is the detailed functional block diagram of embedded-type security control module in the present embodiment;
Fig. 7 is the detailed functional block diagram of radio-frequency communication module in the present embodiment;
Fig. 8 is the level distribution map of present embodiment chips implementation.
Embodiment
Adopt the chip of WAVE standard and be used for the mobile unit unit in order to adopt integrated mode to realize; Improve the integrated level of product; Shorten the development time, save production cost, when improving the quality of products, reduce development difficulty and complexity; The utility model embodiment provides a kind of chip based on automobile-used environment cordless communication network (WAVE) standard, mainly comprises main control module, radio-frequency communication module, modulation module, coding/decoding module and power module.
Below in conjunction with accompanying drawing the utility model preferred embodiment is elaborated.
Shown in accompanying drawing 3; Among the utility model embodiment; Chip system based on the WAVE standard mainly comprises main control module (Host Controller) 301, radio-frequency communication module (RF) 302, modulation module (Module) 303, coding/decoding module 304 and power module (Power Manager Unit) 305; Wherein
Radio-frequency communication module 302 connects modulation module 303, and first signal after the modulation that reception modulation module 303 is sent is transmitted to remote equipment via antenna, and receives the secondary signal that remote equipment sends via antenna;
Coding/decoding module 304; Connect modulation module 303 and main control module 301 respectively; Receive first signal that main control module 301 sends; To sending to modulation module 303 after first signal encoding, and the secondary signal after the demodulation that modulation demodulation module 303 is sent sends to main control module 301 after decoding;
In the present embodiment; Remote equipment can be a roadside unit; Main control module 301 sends first signal through coding/decoding module 304, modulation module 303 and radio-frequency communication module 302 and gives roadside unit, functions such as realization is paid the fees to calculate according to this first signal, traffic information statistics, and roadside unit sends secondary signal to main control module; So that road conditions signal, the information of paying the fees etc. is informed main control module 301; Handle accordingly by main control module 301 again, for example, through display interface the traffic information or the number of paying the fees are shown to the user by main control module 301.Remote equipment can also be the mobile unit that is positioned on other vehicles; Main control module 301 carries out the mutual of information such as road conditions through the mobile unit of radio-frequency communication module 302 and other vehicles, perhaps know vehicle that main control module 301 is local and the distance between other vehicles.
Wherein, radio-frequency communication module 302 is joined through interface and antenna, with transmission and the reception that is used for signal.
In the present embodiment; Shown in accompanying drawing 4; Main control module 301 comprises master control submodule 401, peripheral interface and application module 402, and peripheral interface is connected ancillary equipment 403 with application module 402, and master control submodule 401 is connected with coding/decoding module 304; Send first signal and receive the secondary signal of sending through coding/decoding module 304 to coding/decoding module 304, master control submodule 401 also is used for carrying out information interaction with application module 402 with the ancillary equipment that is connected 403 through peripheral interface.
Shown in accompanying drawing 5; Particularly; Master control submodule 401 comprises: one or more in main control processor (Host Processor), synchronous DRAM (SDRAM), flash memory (Flash), bus control unit (Bus Controller), timer (Times) and the watchdog circuit (Watchdog); Wherein, synchronous DRAM, flash memory, bus control unit, timer, watchdog circuit are connected through bus with main control processor.Particularly; Peripheral interface and application module 402 comprise: one or more in embedded-type security control module (ESAM), transmit/receive antenna interface (TX/RX), intelligent card interface (Smart Card Interface), display interface (Visual Interface), COBBAIF (Audio Interface), power-management interface (Power Management Unit), universal input/output interface (GPIO Interface), keyboard interface (Keypad Interface), network interface (Network Interface), debugging interface (Develop Interface) and the serial interface (Parallel&Serial Interface), and embedded-type security control module and each interface are connected with main control processor in the main control module through bus.
In the present embodiment; Shown in accompanying drawing 6; The embedded-type security control module comprises: embedded-type security processor controls (ESAM CPU), encryption logic (Security Sleep Logic), randomizer (RNG), super encryption processor (ACE), read-only memory (ROM), random asccess memory (RAM), external random access memory (XRAM) and nonvolatile memory (NVM); Wherein, Randomizer, super encryption processor, read-only memory, random asccess memory, external random access memory and nonvolatile memory are connected with the embedded-type security processor controls through bus, and encryption logic is connected with the embedded-type security processor controls.Wherein, encryption logic can guarantee the data security in the read-only memory, is that the external world need not illegally obtain the data in the read-only memory; Deposit command parameter when random asccess memory is used for embedded-type security control operation system works, and return information such as structure, safe condition, odd-job key; Be mainly used in the read-only memory and deposit embedded-type security control operation system program; Nonvolatile memory is used to deposit user's application data, and operating system is saved to data in the nonvolatile storage with document form, when satisfying preset safety condition, just allows to carry out read-write operation; Store AES in the super encryption processor, the embedded-type security processor controls is obtained AES and is encrypted based on the random number that randomizer generates when needs are encrypted from the super encryption processor.
Shown in accompanying drawing 7; Particularly; Radio-frequency communication module 302 comprises: analog digital/digital analog converter (I/Q AD; Be ad/da converter), filter (Filter), transmitter (Transmitter), power amplifier (PA) and RF switch filter (RF Switch), and ad/da converter, filter, transmitter, power amplifier and RF switch filter are connected successively.In the present embodiment; Radio-frequency communication module 302 also comprises: phase-locked loop (PLL), receiver (Receiver) and noiselike signal amplifier (LNA); The output of noiselike signal amplifier is connected with the input of receiver; And the output of receiver is connected with the input of filter, and the noiselike signal amplifier input terminal is connected with the output of RF switch filter, and the output of phase-locked loop is connected with the input of receiver.Wherein, phase-locked loop is used to provide the frequency with the corresponding 5.9G hertz of WAVE standard.Modulation module 303 realizes that by digital signal processor (DSP) DSP connects ad/da converter and master control interface respectively, is connected with main control module 301 through the master control interface with coding/decoding module 304.
Shown in accompanying drawing 8, the said chip implementation carries out level according to the WAVE standard fully and distributes.
Based on such scheme, among the utility model embodiment, shown in accompanying drawing 7; Data transmission method for uplink based on said chip is specially: receive first signal that main control module sends through the master control interface, receive first signal by DSP after; In the data of first signal, add scrambler and carry out convolutional encoding, carry out data interlacing, again the data of first signal are modulated the back and add control information; And after carrying out fast Fourier transform, increase the protection isolation strip, realize information window; And send to ad/da converter and further the data of first signal are carried out digital-to-analogue conversion; By sending to transmitter after the filters baseband signal, carry out power amplification after further first signal being modulated to high-frequency signal by transmitter, undertaken sending after the filtering by the RF switch filter.Wherein, interweave (interleaving) is a kind of error-control technique, and purpose is to make the error code discretization, and the burst error channel is become discrete mistake channel, improves data transmission quality through correcting random error again.
Based on such scheme, among the utility model embodiment, shown in accompanying drawing 7; Data receive method based on said chip is specially: the RF switch filter receives secondary signal via antenna, behind the filtration high-frequency signal; Carry out power amplification by the noiselike signal amplifier, be demodulated into low frequency signal by receiver again, fall baseband signal via filters; After further further carrying out the analog digital conversion, transfer to DSP, remove the protection isolation strip by DSP by ad/da converter; And carry out inverse fast Fourier transform, after the removal control information, further the data of secondary signal are carried out the laggard line data deinterleaving of demodulation; And carry out convolution decoder, behind the data removal scrambler to secondary signal, send to main control module through the master control interface.
Among the utility model embodiment, a kind of mobile unit based on the WAVE standard is provided also, has comprised above-mentioned chip, and the ancillary equipment that is connected with at least one interface that this chip comprises.Wherein, the ancillary equipment that is connected with at least one interface that chip comprises specifically comprises: the antenna that is connected with described transmit/receive antenna interface; The smart card fetch equipment that is connected with the intelligent card interface of chip; The display device that is connected with the display interface of chip; The audio frequency apparatus that is connected with the COBBAIF of chip; The power-supply device that is connected with the power-management interface of chip; The general input-output equipment that is connected with universal input/output interface; The keyboard that is connected with keyboard interface; The network equipment that is connected with network interface; The commissioning device that is connected with debugging interface; The global positioning system that is connected with the serial interface.Wherein, display device can be an indicator light, also can be display.
Based on technique scheme; In the present embodiment; Comprise the chip of main control module, radio-frequency communication module, modulation module, coding/decoding module and power module through design, issue the power management instruction to power module, and to carry out signal mutual with coding/decoding module through main control module; Accept the signal that main control module sends through coding/decoding module; Carry out modulating by the modulation module after the encoding process, launch through antenna by radio-frequency communication module again, and by behind the antenna receiving signal; Sending the modulation module to through radio-frequency communication module carries out demodulation, sends to main control module by after the coding/decoding module decoding again; Receive power management instruction the carrying out corresponding operating that main control module issues through power module, be radio-frequency communication module, modulation module, coding/decoding module and main control module power supply, thereby can carry out the reception and the transmission of signal through the chip that integration mode is realized; Realization is communicated by letter with roadside unit or other vehicles, thereby can this chip be used for intelligent transportation system.And the chip of the employing WAVE standard that realizes through integrated mode can improve the integrated level of product, shortens the development time, saves production cost, and when improving the quality of products, reduces development difficulty and complexity.
Obviously, those skilled in the art can carry out various changes and modification to the utility model and not break away from the spirit and the scope of the utility model.Like this, belong within the scope of the utility model claim and equivalent technologies thereof if these of the utility model are revised with modification, then the utility model also is intended to comprise these changes and modification interior.
Claims (10)
1. the chip based on automobile-used environment cordless communication network WAVE standard is characterized in that, comprises main control module, radio-frequency communication module, modulation module, coding/decoding module and power module:
Main control module; Connect coding/decoding module and power module respectively; Issue the power management instruction to said power module, and need send first signal of remote equipment to, and receive the secondary signal that said coding/decoding module processing is passed through by the remote equipment transmission to said coding/decoding module transmission;
Radio-frequency communication module connects the modulation module, and first signal after the modulation that reception modulation module is sent is transmitted to remote equipment via antenna, and receives the secondary signal that remote equipment sends via antenna;
The modulation module; Connect radio-frequency communication module and coding/decoding module respectively; First signal behind the coding that the reception coding/decoding module sends; First signal behind the coding is sent to radio-frequency communication module after modulating, and the received RF communication module secondary signal that receives via antenna of sending, said secondary signal is carried out sending to coding/decoding module after the demodulation;
Coding/decoding module; Connect modulation module and main control module respectively; Receive said first signal that main control module sends, to sending to the modulation module after said first signal encoding, and the secondary signal after the demodulation that the modulation demodulation module is sent sends to main control module after decoding;
Power module; Connect radio-frequency communication module, modulation module, coding/decoding module and main control module respectively; The said power management instruction that the reception main control module issues is operated accordingly, is radio-frequency communication module, modulation module, coding/decoding module and main control module power supply.
2. chip as claimed in claim 1 is characterized in that said main control module comprises master control submodule, peripheral interface and application module;
Said peripheral interface is connected ancillary equipment with application module;
Said master control submodule is connected with said coding/decoding module, sends said first signal and receives the secondary signal that transmits through said coding/decoding module to said coding/decoding module; And carry out information interaction with application module with the ancillary equipment that is connected through said peripheral interface.
3. chip as claimed in claim 2; It is characterized in that; Said master control submodule comprises: one or more in main control processor, synchronous DRAM, flash memory, bus control unit, timer and the watchdog circuit, and said synchronous DRAM, flash memory, bus control unit, timer and watchdog circuit are connected with said main control processor through bus.
4. chip as claimed in claim 3; It is characterized in that; Said peripheral interface and application module comprise: one or more in embedded-type security control module, transmit/receive antenna interface, intelligent card interface, display interface, COBBAIF, power-management interface, universal input/output interface, keyboard interface, network interface, debugging interface and the serial interface, and all be connected with said main control processor through bus.
5. chip as claimed in claim 4; It is characterized in that said embedded-type security control module comprises: embedded-type security processor controls, encryption logic, randomizer, super encryption processor, read-only memory, random asccess memory, external random access memory and nonvolatile memory; Wherein
Said randomizer, super encryption processor, read-only memory, random asccess memory, external random access memory and nonvolatile memory are connected with said embedded-type security processor controls through bus, and said encryption logic is connected with said embedded-type security processor controls.
6. chip as claimed in claim 1; It is characterized in that; Said radio-frequency communication module comprises: analog digital/digital analog converter, filter, transmitter, power amplifier and RF switch filter, and said analog digital/digital analog converter, filter, transmitter, power amplifier and RF switch filter are connected successively.
7. chip as claimed in claim 6; It is characterized in that; Said radio-frequency communication module also comprises: phase-locked loop, receiver and noiselike signal amplifier; The output of said noiselike signal amplifier is connected with the input of said receiver; And the output of said receiver is connected with the input of said filter, and said noiselike signal amplifier input terminal is connected with the output of said RF switch filter, and the output of said phase-locked loop is connected with the input of said receiver.
8. chip as claimed in claim 1 is characterized in that, said modulation module and coding/decoding module are realized by digital signal processor.
9. the mobile unit based on automobile-used environment cordless communication network WAVE standard is characterized in that, comprising: each described chip of claim 1-8, and the ancillary equipment that is connected with at least one interface that said chip comprises.
10. mobile unit as claimed in claim 9 is characterized in that, the ancillary equipment that is connected with at least one interface that said chip comprises specifically comprises:
The antenna that is connected with the transmit/receive antenna interface of said chip;
The smart card fetch equipment that is connected with the intelligent card interface of said chip;
The display device that is connected with the display interface of said chip;
The audio frequency apparatus that is connected with the COBBAIF of said chip;
The power-supply device that is connected with the power-management interface of said chip;
The general input-output equipment that is connected with said universal input/output interface;
The keyboard that is connected with said keyboard interface;
The network equipment that is connected with said network interface;
The commissioning device that is connected with said debugging interface;
The global positioning system that is connected with said serial interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120473562 CN202353824U (en) | 2011-11-24 | 2011-11-24 | Chip and vehicle-mounted device based on WAVE (Wireless Access in Vehicle Environment) standard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120473562 CN202353824U (en) | 2011-11-24 | 2011-11-24 | Chip and vehicle-mounted device based on WAVE (Wireless Access in Vehicle Environment) standard |
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| Publication Number | Publication Date |
|---|---|
| CN202353824U true CN202353824U (en) | 2012-07-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201120473562 Expired - Lifetime CN202353824U (en) | 2011-11-24 | 2011-11-24 | Chip and vehicle-mounted device based on WAVE (Wireless Access in Vehicle Environment) standard |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103442080A (en) * | 2013-09-07 | 2013-12-11 | 李拓彬 | Vehicle-mounted communication system based on WAVE |
| CN105812017A (en) * | 2014-10-16 | 2016-07-27 | 三星Sds株式会社 | Antenna controlling device and controlling method based on wireless access in vehicular environment |
-
2011
- 2011-11-24 CN CN 201120473562 patent/CN202353824U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103442080A (en) * | 2013-09-07 | 2013-12-11 | 李拓彬 | Vehicle-mounted communication system based on WAVE |
| CN105812017A (en) * | 2014-10-16 | 2016-07-27 | 三星Sds株式会社 | Antenna controlling device and controlling method based on wireless access in vehicular environment |
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| CP01 | Change in the name or title of a patent holder |
Address after: 100015 Beijing city Chaoyang District Dongzhimen West eight Street No. 2 room Wanhong Yan Dong Business Garden Patentee after: Beijing Watchdata Limited by Share Ltd Address before: 100015 Beijing city Chaoyang District Dongzhimen West eight Street No. 2 room Wanhong Yan Dong Business Garden Patentee before: Beijing Woqi Data System Co., Ltd. |
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| CP01 | Change in the name or title of a patent holder | ||
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Granted publication date: 20120725 |
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| CX01 | Expiry of patent term |