CN101184092A - Environment perception restructurable mobile terminal communication processor - Google Patents
Environment perception restructurable mobile terminal communication processor Download PDFInfo
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- CN101184092A CN101184092A CNA2007101687302A CN200710168730A CN101184092A CN 101184092 A CN101184092 A CN 101184092A CN A2007101687302 A CNA2007101687302 A CN A2007101687302A CN 200710168730 A CN200710168730 A CN 200710168730A CN 101184092 A CN101184092 A CN 101184092A
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Abstract
The invention discloses a mobile terminal communication processor with environment perception and reconfigurable ability, comprising a reconfigurable physical layer unit, a clock manager, a time control unit, a microcontroller, a storage unit, a protocol and perception processing unit, a bus bridge contact, a boundary scan interface, an oscillator, a power management circuit, a high-speed interface for multiple architectures and a bus bridge contact. Datum from exterior are received and self-adaptive transceived by the reconfigurable physical layer unit based on oscillation frequency provided by the oscillator and delivered to the external bus after modulated. The processed datum are delivered to the external bus and sent out from the unit. The invention has the advantages that external environment can be sensed and self-adaptive adjustment of a modulation and demodulation technique and a radio frequency amplifier can be realized; the communication between a non heterogeneous and a heterogeneous network is supported; seamless communication with chips of other protocols in a wide area network can be carried out, and the cost of realization is reduced on basis of improved integral performance of the processor.
Description
Technical field
The present invention relates to computer network communication and integrated circuit fields, the reconfigurable communication of mobile terminal processor of a kind of specifically environment sensing.
Background technology
Development of integrated circuits is very fast at present, also more and more is applied to the communications field.Information communication society just strides forward towards the biological environment of an environment sensing Ubiquitous Network AUN (Ambient Ubiquity Network).Clear and definite promotion policy and development plan have all been formulated from the national industry height in Asia-Pacific, European Union, three representative areas, North America, and the five-year is the critical stage that the environment sensing Ubiquitous Network is popularized, promoted.Ubiqui tous (omnipresent) is derived from Latin language, means to be present in Anywhere (existing everywhere).The breadboard computer scientist MarkWeiser of Xerox in 1991 propose the notion of " ubiquitous computing " (Ubiquitous Computing) first, described anyone and no matter when, where all can be connected with network, obtained the brand-new information-intensive society of individual info service by suitable terminal equipment.
People such as the Alireza Shirvani of Marvel company mention shown in a kind of communication of mobile terminal chip in article " A dual-band triple-mode SoC for802.11a/b/g Embedded WLAN in 90nm CMOS ".This solution integration the physical layer of 802.11a/b/g (Physical writes a Chinese character in simplified form PHY), media access control layer (Media Access Control writes a Chinese character in simplified form MAC) and being used for carry out the ARM nuclear that high density CPU handles, can support the multiple interfaces agreement, be at present up-to-date one of the communications of Mobile Terminals chip that is applied to.This chip following exist aspect several not enough:
1. chip can't the perception external environment condition and internal structure is carried out adaptive adjustment.
2. can only support the 802.11a/b/g agreement, can't carry out seamless communication with the chip of other agreements of wide area network.
3. chip has only been paid close attention to PHY, MAC, does not have to consider more high-rise agreement substantially.
4. the frequency range of frequency synthesizer generation is too little, can't realize that the spectrum scan mechanism according to developer's definition scans in the present wide frequency domain.
5. digital-to-analogue/precision of A/D converter and figure place can not be adjusted, and have caused the waste of resource for the not high application scenario of some demand.
Summary of the invention
The object of the present invention is to provide the reconfigurable communication of mobile terminal processor of a kind of environment sensing, this processor can the perception outside environment and modulation demodulation system and radio frequency amplifier carried out the self adaptation adjustment, can carry out seamless communication with the chip of other agreements of wide area network, reach the requirement of portable terminal low-power consumption.
The reconfigurable communication of mobile terminal processor of environment sensing provided by the invention is characterized in that: it comprises restructural physical layer element, Clock Managing Unit, timing control unit, microcontroller, memory cell, agreement and perception processing unit, bus bridge contact, boundary scan interface, oscillator, electric power management circuit, can redefine high-speed interface and bus bridge contact;
Can redefine high-speed interface is and the connecting interface of peripheral hardware, has the serial line interface and the parallel interface of mutual conversion;
The bus bridge contact is responsible for connecting internal bus and external bus;
Timing control unit is used to finish regularly and interruption controls;
Swap data between configuration when memory cell is used to start, it and inside and external bus, and stored;
Oscillator is used to produce frequency of oscillation, and offers Clock Managing Unit and restructural physical layer element;
The restructural physical layer element receives and comes from outside data, according to the frequency of oscillation that oscillator provides, data is carried out the self adaptation transmitting-receiving, through after the modulation it is sent into external bus; After other resume module were intact, data were admitted to external bus and send through the restructural physical layer element;
Clock Managing Unit receives the frequency of oscillation from oscillator, carries out Clock management by external bus;
Agreement and perception processing unit are by the data of bus bridge contact reception from the restructural physical layer element, carry out the processing of medium access control and media-independent handover, finish the setting of environmental variance, and carry out safety encipher, and then send to the restructural physical layer element by the bus bridge contact;
Boundary scan interface is debugged as the communication of mobile terminal processor and the interface of inner each unit testing;
Microcontroller receives the data that come from agreement and perception processing unit, and data are carried out the processing of mac-layer protocol and the message groups bag and the processing of MIH layer, handles to comprise operation, reset, hover and restart a state; Control through the restructural physical layer element that connects on the external portion of the bus bridge contact bus, comprise the configuration of carrying out sample frequency and figure place, and realize control, management, storage and debugging entire chip;
Electric power management circuit is responsible for the power management of entire process device.
The reconfigurable communication of mobile terminal processor of environment sensing of the present invention is supported the communication between non-isomery/heterogeneous network.So-called environment sensing is meant environment that this processor can the perception outside and modulation demodulation system and radio frequency amplifier is carried out the self adaptation adjustment; The physical layer that so-called restructural is a finger processor can reconfigure according to environment requirement.Processor of the present invention can carry out seamless communication with the chip of other agreements of wide area network, and the Integrated Solution up to MIH layer (Media Independent Handover writes a Chinese character in simplified form MIH) from PHY is provided.The present invention can be fit to the communication between the heterogeneous network of multi-protocols more.Owing to adopted reconfigurable unit, on the basis that the processor overall performance improves, reduced the cost that realizes.To the decline that the perception of environment has also brought power consumption, this performance has great importance for power consumption requires very tight portable terminal.
Description of drawings
Fig. 1 is the structural representation of the reconfigurable communication of mobile terminal processor of environment sensing of the present invention;
Fig. 2 is the structural representation of restructural physical layer element;
Fig. 3 is the structural representation of Clock Managing Unit;
Fig. 4 is the structural representation of timing control unit;
Fig. 5 is the structural representation of memory cell;
Fig. 6 is the structural representation that processing unit is handled in agreement and perception;
Fig. 7 is the structural representation of medium access control coprocessor;
The state diagram of Fig. 8 micro controller unit of the present invention;
The reconfigurable communication of mobile terminal processor of Fig. 9 environment sensing of the present invention application examples structure chart.
Embodiment
The present invention is further detailed explanation below in conjunction with accompanying drawing and example.
As shown in Figure 1, communication of mobile terminal processor of the present invention comprises restructural physical layer element 100, Clock Managing Unit 200, timing control unit 300, microcontroller 600, memory cell 400, agreement and perception processing unit 500, bus bridge contact 930, boundary scan interface 910, oscillator 800, electric power management circuit 700, can redefine high-speed interface 920 and bus bridge contact 930.
Restructural physical layer element 100 is used to finish the self adaptation transmitting-receiving and the modulation of data, and it receives and comes from outside data RX, and it is sent into external bus; After other resume module were intact, data were admitted to external bus and send through restructural physical layer element 100.Oscillator 800 provides needed frequency of oscillation for restructural physical layer element 100.
The major function of Clock Managing Unit 200 is to carry out the management of clock.It receives the frequency of oscillation from oscillator 800, carries out Clock management by external bus.
Timing control unit 300 is used to finish regularly, interruption controls, to improve the anti-interference of system.
The major function of memory cell 400 is the configurations that are used for starting, it and inside and external bus storage, swap data.
The major function of agreement and perception processing unit 500 is to be mainly used to treatment media MAC layer, media-independent handover layer protocol, environmental variance and fail safe etc.It receives from the data of restructural physical layer element 100 by bus bridge contact 930 and handles accordingly, and then sends to restructural physical layer element 100 by bus bridge contact 930.
Boundary scan interface 910 is the interfaces to whole system is debugged and internal element is tested.
The function of oscillator 800 is to produce stable frequency of oscillation.It provides frequency of oscillation for Clock Managing Unit 200 and restructural physical layer element 100.When working frequency of chip is low as the whole clock work of chip.
The major function of microcontroller 600 is the processing of mac-layer protocol and the message groups bag and the processing of MIH layer, and to control, management, storage and the debugging of entire chip.The processing time of microcontroller 600 mainly concentrates on agreement and perception processing unit 500.The control of restructural physical layer element 100 can trigger by timing control unit 300, and the timer in the timing control unit 300 is adjustable with each priority of interrupt, guarantees that microcontroller 600 has time enough to handle MAC layer and MIH layer protocol.Microcontroller 600 comprises 4 states altogether, moves, resets, hovers and restart, and its state such as Fig. 8 show.
Can redefine high-speed interface 920 and can realize and being connected of peripheral hardware that this interface can be defined as serial line interface or parallel interface.
Bus bridge contact 930 is responsible for connecting internal bus and external bus.When the device that connects on 600 pairs of external buss of microcontroller is controlled, need through bus bridge contact 930.
When receiving data, input data RX at first enters restructural physical layer element 100, enters external bus then, enters into internal bus via bus bridge contact 930 again, enters agreement and perception processing unit 500 then, enters microcontroller 600 at last; When sending data, data at first enter agreement by microcontroller 600 and perception processing unit 500 enters internal bus then, enter external bus via bus bridge contact 930, and entering into restructural physical layer element 100 at last becomes data flow TX and send out.
Illustrate the concrete formation of each part mentioned above below.
As shown in Figure 2, restructural physical layer element 100 comprises that frequency synthesizer 106, D and D/A converter 101, upconverter 103, low-converter 102, variable low noise amplifier 105, variable low noise amplifier 104, restructural coded/modulated device 107, direct memory access device 108, restructural decode/demodulates device 109, radio-frequency transmissions buffer memory 110, radio frequency receive buffer memory 111, wireless environment variable configurator 112, antenna switching unit 114, broad-band antenna 113.When its workflow is reception, RX at first enters broad-band antenna 113, enter variable low noise amplifier 105 through antenna switching unit 114, enter low-converter 102 then, enter radio-frequency transmissions buffer memory 110 again through D and D/A converter 101, enter external bus after entering restructural decode/demodulates device 109; Data enter restructural coded/modulated device 107 by external bus in the time of the emission data, enter radio-frequency transmissions buffer memory 110 then, enter upconverter 103 after in D and D/A converter 101, changing accordingly, enter variable low noise amplifier 104 then, become emission data TX through antenna switching unit 114 and broad-band antenna 113.
Frequency synthesizer 106 is a kind of broadband frequency synthesizers of modulating, and this frequency synthesizer can realize being lower than the modulation step-length of 1MHz, and the output frequency modulation range is greater than 10GHz.For modulator and demodulator provide accurate frequency.Particularly frequency synthesizer 106 adopts 3 frequency synthesizers, controls synthetic MHz frequency band signals and ghz band signal as required respectively by control logic, synthesizes then to have the broad frequency range, resolution height, and the fast clock signal of switching rate.Frequency synthesizer 106 is with good expansibility, and can change output frequency flexibly according to the requirement of applied environment.It receives the control signal of external bus, adjusts corresponding output frequency fc.Fc provides conversion frequency for last low-converter.Oscillator 800 provides reference frequency for frequency synthesizer 106.
D and D/A converter 101 is the adaptive pipeline organization digital-to-analogue/analog to digital converters of a kind of restructural, this transducer can be according to the difference of input signal band limits, automatically select the size of sample frequency and the figure place of resolution, and can reduce area of chip and power consumption.Particularly D and D/A converter 101 detects the frequency range that control circuit detects the input analog signal automatically by a frequency range, disposes the size of sample frequency and the figure place of resolution automatically according to frequency range then.As required, D and D/A converter 101 can directly be linked on 802.3 the intermediate frequency.The signal that it receives from low-converter 102 receives buffer memory 111 through issuing radio frequency after the analog-to-digital conversion; It receives from the signal of radio-frequency transmissions buffer memory 110 and issues upconverter 103 through after the digital-to-analogue conversion.Microcontroller 600 can carry out the configuration of sample frequency and figure place by 930 pairs of D and D/A converters of bus bridge contact 101.
The function of upconverter 103 is the lower frequency bands of moving the radiofrequency signal linearity, passes in the base band, is convenient to Base-Band Processing.The structure of upconverter 103 also is a difference paralleling switch on two frequency mixers, at the local frequency input of frequency mixer tandem tap respectively, the shutoff by the radiofrequency signal control switch realizes that not frequency conversion, up-conversion, three kinds of frequency conversion modes of secondary up-conversion move signal in the base band to a higher frequency band.It receives from the signal of D and D/A converter 101 and sends it to variable power amplifier 104.
Variable power amplifier 104 makes transmitter power keep stable in the set point of temperature scope, has the power-on protection function, the damage of impulse current to reflector of avoiding starting shooting.Variable power amplifier 104 compares and enlarges reference voltage and feedback voltage by amplifier, controls the size of bias current, to realize the control of transmitter power.Coupling capacitance effect in this circuit is very important, and its effect is a ripple of eliminating the amplifier output voltage, so it is the key that keeps laser bias current stability.It receives from the data of upconverter 103 and sends it to antenna switching unit 114.
The function of low-converter 102 is the processing of the analog signal that the lower band signal linearity in the base band is moved a high frequency band being convenient to simulate part.The structure of low-converter 102 is difference paralleling switches on two frequency mixers, at the local frequency input of frequency mixer tandem tap respectively, the shutoff by the radiofrequency signal control switch realizes that not frequency conversion, down-conversion, three kinds of frequency conversion modes of secondary down-conversion move radiofrequency signal to a lower frequency band.He receives from the signal of variable low noise amplifier 105 and sends it to D and D/A converter 101.
Variable low noise amplifier 105 satisfies the performance requirement of various protocols to low noise amplifier, comprise a plurality of variable gain power amplification units, possess different saturation output power level separately, configuration is equipped with effect by input switch array with one of them power cell to mode switching signal with controller according to environmental parameter.
By the switching of radio-frequency switch array, the output signal that the high-output power that is used for the high-output power pattern amplifies the variable gain unit or is used for the low output variable gain power cell of low output power mode has realized the efficiency improvement under high and low output power mode.Its frequency makes it can work in the wide frequency ranges of 0～11G by the adjusting of input impedance matching network and gain.And designed automatic gain Control and Feedback loop, make the non-linear of variable low noise amplifier 105 and gain reach good compromise, and regulating and controlling at any time.Avoid the use of cascade variable gain amplifier simultaneously, reduced system noise.For output impedance, adopt standard 50 ohm, made things convenient for the design of subsequent cascaded circuit to avoid too much capacitance-resistance use simultaneously, saved circuit area, reduced cost.It receives from the signal of antenna switching unit 114 and sends it to low-converter 102.
Restructural coded/modulated device 107 provides to be realized coding and modulates needed various basic logic unit (such as register, adder or the like), by controller these basic logic units is configured, and can realize multiple code modulation mode.Its receive from the data of external bus and send it to radio-frequency transmissions buffer memory 110. and it can also by direct memory access device 108 realize with restructural decode/demodulates device 109 between leading directly to.
Direct memory access device 108 is used for realizing leading directly between restructural decode/demodulates device 109 and the restructural coded/modulated device 107.Direct memory access device 108 is arbitrators of internal bus, according to the priority of using, and the priority level of can distribution bus using.
Restructural decode/demodulates device 109 provides realizes decoding and the needed various basic logic units of demodulation (such as register, adder, memory cell or the like), by controller these basic logic units are configured, can realize the algorithm of multiple decoding demodulation.It receives from radio frequency and receives the data of buffer memory 111 and send it to external bus.And it can also be by leading directly between 108 realizations of direct memory access device and the restructural coded/modulated device 107.
Radio-frequency transmissions buffer memory 110 connects D and D/A converter 101 and restructural coded/modulated device 107.Its effect be realize between D and D/A converter 101 and the restructural coded/modulated device 107 synchronously.
Radio frequency receives buffer memory 111 and connects D and D/A converter 101 and restructural decode/demodulates device 109.Its effect be realize between D and D/A converter 101 and the restructural decode/demodulates device 109 synchronously.
Wireless environment variable configurator 112 major functions are QOS requirement, environmental aspect and resource information to be passed to destination node be configured, and require to be suitable modulation scheme Resources allocation according to the algorithm of environment sensing coprocessor 560.It receives from the information of agreement and perception processing unit 500 and handles accordingly.
Antenna switching unit 114 is used for selecting antenna to be in transmission or receiving mode.Its receives from the signal of variable power amplifier 104 and sends to broad-band antenna 113 when sending; Signal comes to enter variable low noise amplifier 105 from broad-band antenna 113 when receiving.
The structure that broad-band antenna 113 adopts is dielectric substrate-tectum structure, takes plane to obtain small size.Realized the comprehensive and optimization of antenna performance by the combination of GA and MoM method.It is the wave point of restructural physical layer element 100 and space outerpace.
As shown in Figure 1, Clock Managing Unit 200 comprises clock generator 220, the phase-locked loop 210 among Fig. 4.
Clock generator 220 can be realized the use of a plurality of clocks, and by using gated clock, each unit can turn-off in real time; The low-speed clock that can turn-off the power supply of phase-locked loop 210 separately and the whole clock of chip is switched to external oscillator unit 800 under the low situation of operating frequency further reduces power.
The function of phase-locked loop 210 is to realize Phase Tracking and locking.It receives from the frequency of oscillation of oscillator 800 and sends data to clock generator 220.
Electric power management circuit 700 adopts circuit structure simple, and the embedded LDO circuit of high-performance low-power-consumption is made the power subsystem of SOC chip.On traditional LDO Fundamental Theory of Circuit, we have increased feedback control loop, have realized the LDO double loop structure.Electric power management circuit 700 is responsible for the power management of entire chip, uses gated clock in design, and each unit can turn-off in real time, can support single-unit, two joints, three joint AAA batteries and single-unit lithium/nickel-cadmium cell power supply.
Timing control unit 300 comprises among Fig. 5: watchdog circuit 301, timer 302, interrupt control unit 303.
The function of watchdog circuit 301 is to prevent that microcontroller 600 from causing the phenomenon that crashes because of being subjected to external interference, improves system's anti-interference.
The stability of the frequency of oscillation of timer 302 has significant effects to the performance of chip, adopts external crystal-controlled oscillation to cooperate the chip internal circuit as clock generation circuit, and its frequency of oscillation depends primarily on quartz crystal.The equivalent Q value of this clock generation circuit is very high, and stray parameter is very little to the influence of frequency of oscillation, so the stability of this clock frequency can be very high.In order to remove the burr of clock, increased Schmidt trigger at the output of oscillator clock signal has been carried out shaping.
The function of interrupt control unit 303 is to be worked simultaneously in microcontroller 600 and other unit.The respective process of interrupting has three phases: promptly interrupt corresponding, Interrupt Process and interruption and return.
As shown in Figure 5, memory cell 400 comprises the tight random asccess memory 401 of Fig. 6, read-only memory 402, random asccess memory 403.
Closely the function of random asccess memory 401 is that wherein a cover bus is taken by DMA, and CPU can use an other cover bus to carry out data or process of commands, and the result that will handle leaves among the tight RAM.When last cover bus is taken by CPU again, reading of data is carried out subsequent treatment from tight RAM.Purpose is to improve the service efficiency of CPU.
The function of read-only memory 402 is programs that place system starts.
The function of random asccess memory 403 is the spaces as executive program, can be used as internal memory and use.
The major function of agreement and perception processing unit 500 is to be mainly used to treatment media MAC layer, media-independent handover layer protocol, environmental variance and fail safe etc., and it comprises among Fig. 7:
Superencipherment algorithm coprocessor 510, medium access control coprocessor 520, medium independent bridge point 540, media-independent handover coprocessor 550, environment sensing coprocessor 560.
The algorithm logic of superencipherment algorithm coprocessor 510 is as follows: the S box of 16 8 bits is finished byte and is replaced, and carries out the capable shift transformation of 128 bits then, and again through the row mixing transformation of 4 32 bits, the last key that comes out with expansion carries out XOR.Its function is the fail safe that improves chip, effectively prevents timing attack, energy attack, particularly superencipherment algorithm differential power consumption attack.
The major function of medium access control coprocessor 520 is to comprise: conflict management; Automatic-answering back device ACK produces; System's multicycle timer; Programmable encryption and decryption is handled and frame check.It comprises among Fig. 8: physical layer interface 521, emission first-in first-out buffer memory 528, reception first-in first-out buffer memory 522, power managed device 531, conflict manager 529, ciphering signature device 527, decrypted authentication device 523, transmit buffer 526, reception buffer 524, tandom number generator 532, multicycle timer 533, Microprocessor Interface 525.Its workflow is DRP data reception process: the data of reception are entered by physical layer interface 521 and receive first-in first-out buffer memory 522, enter reception buffer 524 through decrypted authentication device 523 then, enter Microprocessor Interface 525 at last; Data transmission procedure: the data of transmission enter transmit buffer 526 by Microprocessor Interface 525, through entering emission first-in first-out buffer memory 528 after the ciphering signature device 527, enter physical layer interface 521 at last.
Physical layer interface 521 is used for doing the interface of physical layer and media access control layer.It is the interface of conflict manager 529, emission first-in first-out buffer memory 528, reception first-in first-out buffer memory 522 and internal bus.
Emission first-in first-out buffer memory 528 is used for realizing the synchronous of physical layer and media access control layer.Its receives the data from ciphering signature device 527, data is sent to physical layer interface 521 under the control of conflict manager 529.
Receive first-in first-out buffer memory 522 and be used for realizing the synchronous of physical layer and media access control layer.Its receives the data from physical layer interface 521, data is sent to decrypted authentication device 523 under the control of conflict manager 529.
Power managed device 531 can carry out Clock gating according to using appointment or system's needs, closes idle unit, thereby saves energy consumption, the particularly conversion from the sleep pattern to the mode of operation.
Conflict manager 529 is finished the optional collision detection algorithm of parameter, realizes channel access, and conflict is avoided.It receives from the data of microprocessor 525 and control hazard manager 529, ciphering signature device 527, decrypted authentication device 523, transmit buffer 526, reception buffer 524, emission first-in first-out buffer memory 528, receives first-in first-out buffer memory 522.
Ciphering signature device 527 is based on the block encryption operation of superencipherment algorithm, finishes by special superencipherment algorithm coprocessor is auxiliary.It receives from the data of transmit buffer 526 and sends it to emission first-in first-out buffer memory 528.
Decrypted authentication device 523 is based on the packet deciphering operation of superencipherment algorithm, finishes by special superencipherment algorithm coprocessor is auxiliary.It receives from the data that receive first-in first-out buffer memory 522 and sends it to reception buffer 524.
The function of transmit buffer 526 is to realize synchronous between microcontroller 600 and the ciphering signature device 527.It receives from the data of Microprocessor Interface 525 and sends it to ciphering signature device 527.
The function of reception buffer 524 is to realize synchronous between microcontroller 600 and the decrypted authentication device 523.It receives from the data of decrypted authentication device 523 and sends it to Microprocessor Interface 525.
The function of tandom number generator 532 is to be used for producing the encryption that random number is carried out the media access control layer data.
Multicycle timer 533 can produce the required multiple frequency-dividing clock of system's different operating state.
The function of Microprocessor Interface 525 is to realize being connected of media access control layer and microcontroller 600.
Medium independent bridge point 540 among Fig. 6 can play the effect of route in self-organizing network.At this moment MIH will not work.
Media-independent handover coprocessor 550 is terminals for management level that satisfy the access of independently finishing network under different network environments and handoff functionality and re-establish, be positioned on the MAC, under the IP layer, the part of link layer, also can be referred to as LL2.5, its function comprises:
PDU management, connection management, exchanging policy management, exchange of management, media-independent handover, environment sensing, letter exchange, information service.
The PDU management is to receive protocol data to be given to this layer medium access control coprocessor 520 from the upper strata, breaks into the packet MPDU of media access control layer according to the needs of agreement.
Connection management is that selection is towards connection or towards disconnected mode.
The exchanging policy management is the exchanging policy that selection is adopted.
The exchange of management decision systems is to adopt soft handover or direct-cut operation.
Media-independent handover is to carry out carrying the resource reservation application when operation associated in the association request at terminal and target BS/AP.
Environment sensing is according to the requirement of the cognitive coprocessor of environment the MIH layer to be disposed accordingly.
Information exchange is dynamically change link attribute, linking status and link quality.
Information service is to provide necessary information for message exchange.
Environment sensing coprocessor 560 is carried out corresponding adaptive algorithm by a kind of cost function.Node in transmission always will minimize cost function and minimize BER by adaptive modulation scheme.Consider that at first the throughput of network has precedence over the situation of BER and energy.Find the incomer as the mobile network, server wishes to obtain more video data.Such application has some predefined BER of minimizing.Therefore, environment sensing coprocessor 560 is selected the system configuration of maximum data transfer speed for target BER and given signal to noise ratio.For this application, maximum data transfer speed can minimize cost function; For the sensor network of considering energy, minimize the transmission of power of every bit.Such network is only exported and is satisfied the energy that minimum QOS requires.Environment sensing coprocessor 560 further reduces the energy cost by selecting modulation scheme.
Owing to adopt common bigger data traffic and the operand of unified bus framework can cause the response time long, can't adapt to high speed data transfer, so adopt dual-bus structure among the present invention.
The medium access control coprocessor 520 that operand is big, medium independent bridge point 540 and media-independent handover coprocessor 550 are mounted on independently internal bus, and the transfer of data that directly will accept and send by the DMA unit is to correspondence position, and external bus is responsible for controlling analogue unit and various peripheral cell.
Show that as Fig. 9 the example that this processor of the present invention is used is: in WLAN (wireless local area network), formed portable terminal by the present invention and host computer CPU, keyboard, display; In metropolitan area network, formed portable terminal by the present invention, host computer CPU, display and keyboard.The keyboard of two portable terminals all is keyboards of the T168 of Sony-Ericson of employing, and display all is displays of the 3510i of Nokia of employing.Host computer CPU is 32 ARM nuclears, and its function all is to be used for the above upper-layer protocol of treatment media independent handover layer.In the heterogeneous network of WLAN (wireless local area network) and wireless MAN composition, two portable terminals can carry out real-time, the second best in quality communication, and low in energy consumption.Optimize embodiment though this explanation is of choosing, the professional and technical personnel should understand, and the present invention is not limited to above-mentioned example, but the situation of communicating by letter between the suitable multiple heterogeneous network.
Claims (7)
1. reconfigurable communication of mobile terminal processor of environment sensing, it is characterized in that: it comprises restructural physical layer element (100), Clock Managing Unit (200), timing control unit (300), microcontroller (600), memory cell (400), agreement and perception processing unit (500), bus bridge contact (930), boundary scan interface (910), oscillator (800), electric power management circuit (700), can redefine high-speed interface (920) and bus bridge contact (930);
Can redefine high-speed interface (920) is and the connecting interface of peripheral hardware, has the serial line interface and the parallel interface of mutual conversion;
Bus bridge contact (930) is responsible for connecting internal bus and external bus;
Timing control unit (300) is used to finish regularly and interruption controls;
Swap data between the configuration of memory cell (400) when being used to start, it and inside and external bus, and stored;
Oscillator (800) is used to produce frequency of oscillation, and offers Clock Managing Unit (200) and restructural physical layer element (100);
Restructural physical layer element (100) receives and comes from outside data, according to the frequency of oscillation that oscillator (800) provides, data is carried out the self adaptation transmitting-receiving, through after the modulation it is sent into external bus; After other resume module were intact, data were admitted to external bus and send through restructural physical layer element (100);
Clock Managing Unit (200) receives the frequency of oscillation from oscillator (800), carries out Clock management by external bus;
Agreement and perception processing unit (500) are by the data of bus bridge contact (930) reception from restructural physical layer element (100), carry out the processing of medium access control and media-independent handover, finish the setting of environmental variance, and carry out safety encipher, and then send to restructural physical layer element (100) by bus bridge contact (930);
Boundary scan interface (910) is debugged as the communication of mobile terminal processor and the interface of inner each unit testing;
Microcontroller (600) receives the data that come from agreement and perception processing unit (500), and data are carried out the processing of mac-layer protocol and the message groups bag and the processing of MIH layer, and processing comprises operation, resets, hovers and rebooting status; Through bus bridge contact (930) the restructural physical layer element (100) that connects on the external bus is controlled, comprised the configuration of carrying out sample frequency and figure place, and realize control, management, storage and debugging entire chip;
Electric power management circuit (700) is responsible for the power management of entire process device.
2. the reconfigurable communication of mobile terminal processor of environment sensing according to claim 1 is characterized in that:
Restructural physical layer element (100) comprises frequency synthesizer (106), D and D/A converter (101), upconverter (103), low-converter (102), variable low noise amplifier (105), variable low noise amplifier (104), restructural coded/modulated device (107), direct memory access device (108), restructural decode/demodulates device (109), radio-frequency transmissions buffer memory (110), radio frequency receives buffer memory (111), wireless environment variable configurator (112), antenna switching unit (114), broad-band antenna (113);
Frequency synthesizer (106) receives the control signal of external bus, adjusts corresponding output frequency, for upper and lower frequency converter provides conversion frequency;
D and D/A converter (101) receives the signal from low-converter (102), according to the difference of input signal band limits, detects the frequency range of input analog signal, disposes the size of sample frequency and the figure place of resolution automatically according to frequency range then; Receive buffer memory (111) through issuing radio frequency after the analog-to-digital conversion; It receives from the signal of radio-frequency transmissions buffer memory (110) and issues upconverter (103) through after the digital-to-analogue conversion;
Upconverter (103) receives the radiofrequency signal from D and D/A converter (101), improves its frequency, and sends it to variable power amplifier (104);
Variable power amplifier (104) receives the data from upconverter (103), by amplifier reference voltage and feedback voltage compared and enlarged, and the size of control bias current, and send it to antenna switching unit (114);
Variable low noise amplifier (105) comprises a plurality of variable gain power amplification units that possess different saturation output power level, be used to satisfy the performance requirement of various protocols to low noise amplifier, configuration is equipped with effect by input switch array with one of them power cell to mode switching signal with controller according to environmental parameter; Reception sends it to low-converter (102) from the signal of antenna switching unit (114) after handling;
Low-converter (102) is used for the lower band signal linearity of base band is moved the analog signal of a high frequency band, and it receives the signal from variable low noise amplifier (105), sends it to D and D/A converter (101) after the processing;
Restructural coded/modulated device (107) is used for realizing coding and modulation, it receives from the data of external bus and sends it to radio-frequency transmissions buffer memory (110), also by leading directly between direct memory access device (108) realization and the restructural decode/demodulates device (109);
Direct memory access device (108) is used for the management of internal bus, and according to the priority of using, the priority level that distribution bus is used realizes leading directly between restructural decode/demodulates device (109) and the restructural coded/modulated device (107);
Restructural decode/demodulates device (109) is used for realizing decoding and demodulation, and it receives from radio frequency and receives the data of buffer memory (111) and send it to external bus; It is by leading directly between direct memory access device (108) realization and the restructural coded/modulated device (107);
Radio-frequency transmissions buffer memory (110) connects D and D/A converter (101) and restructural coded/modulated device (107), realizes synchronous between D and D/A converter (101) and the restructural coded/modulated device (107);
Radio frequency receives buffer memory (111) and connects D and D/A converter (101) and restructural decode/demodulates device (109), realizes synchronous between D and D/A converter (101) and the restructural decode/demodulates device (109);
Wireless environment variable configurator (112) is used for that QOS requirement, environmental aspect and resource information are passed to destination node and is configured, algorithm according to environment sensing coprocessor (560) requires to be suitable modulation scheme Resources allocation, and it receives from the information of agreement and perception processing unit (500) and handles accordingly;
Antenna switching unit (114) is used for selecting antenna to be in transmission or receiving mode; Its receives from the signal of variable power amplifier (104) and sends to broad-band antenna (113) when sending; Signal comes to enter variable low noise amplifier (105) from broad-band antenna (113) when receiving;
Broad-band antenna (113) is the wave point of restructural physical layer element (100) and space outerpace.
3. the reconfigurable communication of mobile terminal processor of environment sensing according to claim 1 is characterized in that:
Clock Managing Unit (200) comprises clock generator (220), phase-locked loop (210); Phase-locked loop (210) is used to realize Phase Tracking and locking, and it receives from the frequency of oscillation of oscillator (800) and sends data to clock generator (220);
Clock generator (220) turn-offs the power supply of phase-locked loop (210) separately by using gated clock under the low situation of operating frequency, and the whole clock of chip is switched to the low-speed clock of external oscillator unit (800).
4. the reconfigurable communication of mobile terminal processor of environment sensing according to claim 1 is characterized in that:
Timing control unit (300) comprises watchdog circuit (301), timer (302) and interrupt control unit (303);
Watchdog circuit (301) is used to prevent that microcontroller (600) from causing the phenomenon that crashes because of being subjected to external interference;
Timer (302) is used to provide clock signal;
Interrupt control unit (303) is used to control microcontroller (600) and works simultaneously with other unit.
5. the reconfigurable communication of mobile terminal processor of environment sensing according to claim 1 is characterized in that:
Memory cell (400) comprises tight random asccess memory (401), read-only memory (402) and random asccess memory (403);
Closely random asccess memory (401) is used for wherein that a cover bus is taken by DMA, and CPU deposits its result when using an other cover bus to carry out data or process of commands;
Read-only memory (402) is used for the program that place system starts;
Random asccess memory (403) is as the space of executive program.
6. according to the reconfigurable communication of mobile terminal processor of arbitrary described environment sensing in the claim 1 to 5, it is characterized in that: agreement and perception processing unit (500) comprise superencipherment algorithm coprocessor (510), medium access control coprocessor (520), medium independent bridge point (540), media-independent handover coprocessor (550) and environment sensing coprocessor (560);
Superencipherment algorithm coprocessor (510) prevents timing attack, energy attack, particularly superencipherment algorithm differential power consumption attack by the fail safe that encryption improves chip;
Medium access control coprocessor (520) is used to carry out conflict management, produces automatic-answering back device, and programmable encryption and decryption is handled and frame check, and has the function of system's multicycle timer;
Medium independent bridge point (540) is used for finishing at self-organizing network the function of route;
Media-independent handover coprocessor (550) is used for independently finishing the access of network and handoff functionality and management level re-establishing under different network environments;
Environment sensing coprocessor (560) is used for the system configuration for target bit and given signal to noise ratio selection maximum data transfer speed, reduces the energy cost by selecting modulation scheme.
7. the reconfigurable communication of mobile terminal processor of environment sensing according to claim 6 is characterized in that:
Medium access control coprocessor (520) comprises physical layer interface (521), emission first-in first-out buffer memory (528), receives first-in first-out buffer memory (522), power managed device (531), conflict manager (529), ciphering signature device (527), decrypted authentication device (523), transmit buffer (526), reception buffer (524), tandom number generator (532), multicycle timer (533), Microprocessor Interface (525);
Physical layer interface (521) is used for doing the interface of physical layer and media access control layer, and it is the interface of conflict manager (529), emission first-in first-out buffer memory (528), reception first-in first-out buffer memory (522) and internal bus;
Emission first-in first-out buffer memory (528) be used for realizing physical layer and media access control layer synchronously, its reception is from the data of ciphering signature device (527), data sent to physical layer interface (521) under the control of conflict manager (529);
Receive first-in first-out buffer memory (522) be used for realizing physical layer and media access control layer synchronously, its reception is from the data of physical layer interface (521), data sent to decrypted authentication device (523) under the control of conflict manager (529);
Power managed device (531) is used for carrying out Clock gating according to using appointment or system's needs, closes idle unit;
Conflict manager (529) is used to finish the optional collision detection algorithm of parameter, realizes channel access, and conflict is avoided; It receives from the data of microprocessor (525) and control hazard manager (529), ciphering signature device (527), decrypted authentication device (523), transmit buffer (526), reception buffer (524), emission first-in first-out buffer memory (528), receives first-in first-out buffer memory (522);
Ciphering signature device (527) receives the data from transmit buffer (526), sends to emission first-in first-out buffer memory (528) after the block encryption operation;
Decrypted authentication device (523) receives from the data that receive first-in first-out buffer memory (522), sends to reception buffer (524) after the packet deciphering operation;
Transmit buffer (526) receives the data from Microprocessor Interface (525), realize synchronous between microcontroller (600) and the ciphering signature device (527), and the data after will handling sends to ciphering signature device (527);
Reception buffer (524) receives the data from decrypted authentication device (523), realize synchronous between microcontroller (600) and the decrypted authentication device (523), and the data after will handling sends to Microprocessor Interface (525);
Tandom number generator (532) is used to produce random number, carries out the encryption of media access control layer data;
Multicycle timer (533) is used to produce the required multiple frequency-dividing clock of system's different operating state;
Microprocessor Interface (525) is used to realize being connected of media access control layer and microcontroller (600).
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