CN1213471A - Method and apparatus for antenna realignement in mobile radiotelephone using injected audio signal - Google Patents
Method and apparatus for antenna realignement in mobile radiotelephone using injected audio signal Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/309—Measuring or estimating channel quality parameters
- H04B17/318—Received signal strength
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/20—Monitoring; Testing of receivers
- H04B17/23—Indication means, e.g. displays, alarms, audible means
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
- H04B1/1027—Means associated with receiver for limiting or suppressing noise or interference assessing signal quality or detecting noise/interference for the received signal
Abstract
A mobile radiotelephone injects an audible alignment signal which is a function of the orientation of the radiotelephone antenna, into the audible radiotelephone communications. The audible alignment signal prompts the radiotelephone user to reorient the radiotelephone antenna for improved alignment with the source of radiotelephone communications. The audible alignment signal is preferably a function of the received signal strength of the radiotelephone communications. The audible alignment signal is preferably artificial noise which is injected in the radiotelephone loudspeaker along with the radiotelephone communications signal, to thereby restore subjective graceful degradation behavior to the received radiotelephone communications. Artificial noise injection is preferably used with coded digital radiotelephone systems which do not audibly degrade until a threshold is reached, below which communications are suppressed. Artificial noise injection may also be used with variable power base stations.
Description
Invention field
The present invention relates to communication system, specifically relate to the mobile radiotelephone communication system of communicating by letter with ground base station or orbiter.
Background of invention
Wireless communication system is used for wireless mobile communications just more and more.The mobile radiotelephone that the wireless communication system use is communicated by letter with ground base station or orbiter.An example of mobile radiotelephone is a cell phone system.Cell phone system is to adopt the wide-area communication network of frequency multiplexing mode.Blecher is at the Vol.VT29 in May nineteen ninety of the vehicle-mounted technology proceedings of IEEE (IEEE Transaction onVehicular Technology), No.2 is entitled as design and the work of having described the analog cellular telephone system in the article of " Advanced Mobile Phone Service " in the pp.238-244.The analog cellular telephone system is also referred to as " AMPS " system.
Recently, digital cellular telephone system and adopt time division multiple access (TDMA) structure to realize above-mentioned digital cellular telephone system has also been proposed.Electronic Industries Association (EIA) and telecommunications industry association (TIA) have also proposed to be used for the standard of digital cellular (ADC) structure of the U.S., and above-mentioned digital cellular (ADC) structure is bimodulus simulation and the digital system that meets EIA/TIA file IS-54B.Assignee of the present invention is just promoting the phone of having realized IS-54B bimodulus structure at present on market.The various criterion that is applicable to digital cellular telephone system has been issued in Europe.The Europe Digital Cellular System is also referred to as GSM, and it also is to use the TDMA structure.
Well-known for those skilled in the art person is that mobile radiotelephone comprises antenna and the transceiver that is used for receiving via the mobile radiotelephone antenna radiotelephone communication.In vehicle-mounted mobile radiotelephone, antenna generally is loaded on the car body.In the hand-held mobile radio phone, antenna generally highlights from the handheld wireless phone housing.The correct orientation of the antenna that radiotelephone communication signals is relevant is for undistorted or call drop and clearly to receive be crucial.As well-known, the direction that often slightly changes antenna will cause the remarkable improvement of radio telephone reception.For example, when the opposite side from user's head receives transmission, cell-phone will suffer the loss of signal strength signal intensity.Head stop the loss of signal that can cause 6dB.
Because the direction of antenna is so important in mobile radiotelephone, so many mobile radiotelephones provide the signal strength signal intensity of the radiotelephone communication signals of being received to show that it can point out the user to redirect antenna.In addition, the quality of received signal trends towards little by little worsening with antenna misalignment increase in simulation or uncoded digital mobile radio telephone system.Therefore, noise level trends towards little by little increasing, and it can point out the user to redirect antenna.Method vehicle-carried mobile or handheld wireless phone can reduce above-mentioned noise by this.
Adopting digital speech code or digital error correction coding at present in wireless communication system is commonplace so that improve communication efficiency.Above-mentioned digital coding allows communication being reduced to than good quality under the situation that is low to moderate 2dB or lower signal to noise ratio, and will end sharp under this thresholding.Therefore, lost simulation FM or the comfort that worsens of coded system not, and replaced the comfort that worsens in sharp cut-off mode under the thresholding.In this type of digital coding wireless communication system, relatively poor orientation can cause that signal strength signal intensity is reduced under the thresholding so that communication suddenly ends.The reduction of signal strength signal intensity can not followed the increase that can point out the noise level that antenna need redirect.
Summary of the invention
Therefore, an object of the present invention is to provide and be used to aim at and the system and method for receiving the mobile radiotelephone antenna direction that mobile radiotelephone is communicated by letter relevant.
Another object of the present invention provides and is used for adopting coding techniques and therefore producing the method and system of the digital mobile radio words directional antenna under the thresholding that a signal ends.
According to the present invention, provide these and other purpose by the mobile radiotelephone that audio frequency aligning direction signal is inserted in the audio frequency radiotelephone communication, above-mentioned audio frequency aligning direction signal is the function of aerial for radio telephone direction.Audio frequency aligning direction signal prompt wireless telephone user improves the direction relevant with the radiotelephone communication source so that aim at the aerial for radio telephone direction again.
Particularly, the radiotelephone communication of receiving has the intensity of receiving signal, and it is the function of aerial for radio telephone position.According to the present invention, audio frequency aligning direction signal is the function of receiving signal strength signal intensity of radiotelephone communication, and it inserts the audio frequency radiotelephone communication.Audio frequency aligning direction signal can be to receive the direct function of signal strength signal intensity or can be the function that depends on another parameter of signal strength signal intensity indirectly, for example distortion or noise level.Audio frequency aligning direction signal is the man-made noise in radiotelephone communication signals is inserted the radio telephone loud speaker preferably, and the performance that the subjective comfortable feeling of radiotelephone communication worsens is received in recovery by this.By recovering the performance that subjective comfortable feeling worsens artificially, the present invention points out the user and receives radiotelephone communication so that aim at the aerial for radio telephone direction again.
Mobile radiotelephone according to the present invention comprises the device that is used to receive radiotelephone communication, and above-mentioned mobile radiotelephone comprises antenna and radio receiving-transmitting unit.The signal intensity indicating equipment response is used to produce the receiving system of signal strength signal intensity indication, and above-mentioned signal strength signal intensity indication is a function of receiving the signal strength signal intensity of radiotelephone communication.As described above, the signal strength signal intensity indication can be the direct or indirect function of a signal strength signal intensity.Audio frequency sensing device response receiving system and signal indicating device produce one and combine the sound signal of receiving radiotelephone communication and signal strength signal intensity indication so that provide the indication of sound signal intensity with the audio frequency radiotelephone communication, and above-mentioned audio frequency sensing device generally comprises one or more loud speaker or earplug loud speaker and can comprise the speech coder and other circuit.
The present invention is useful especially to digital coding radio telephone or other mobile radiotelephone, wherein receiving system is a sharp cut-off receiving system, when receiving that radiotelephone communication signals is on the thresholding, above-mentioned receiving system produces the audio frequency radiotelephone communication signals, and when receiving that radiotelephone communication signals is under the thresholding, above-mentioned receiving system suppresses or ends the audio frequency radiotelephone communication signals.To this type of radio telephone, signal intensity indicating equipment produces alarm signal, and above-mentioned alarm signal is that the function of receiving intensity of radiotelephone communication signals is so that notice receives that the intensity of signal approaches thresholding.
Signal intensity indicating equipment preferably includes the device that is used to produce man-made noise, and the increase of above-mentioned man-made noise is as the function that signal strength signal intensity reduces of receiving of radiotelephone communication signals, and expression receives that signal strength signal intensity is worsening or approaching thresholding by this.The best conduct of the increase of man-made noise is received the function that signal strength signal intensity reduces of receiving the signal strength signal intensity on the thresholding of receiving signal strength signal intensity that is lower than thresholding, expression receives that signal strength signal intensity is approaching thresholding and passing through thresholding by this.Yet, the audio frequency indication that the intensity that also can use increases with signal intensity increases.Therefore, even suppressed radiotelephone communication signals, the man-made noise level still can point out the user so that antenna aligning direction again, and above-mentioned antenna aligning direction again will recover communication.
Man-made noise can be any being different to receive radiotelephone communication and as the signal of antenna direction function.For example, man-made noise can be broadband white noise or pink noise, singlely reduce as signal strength signal intensity and the sinusoidal frequency that changes or a plurality ofly reduce as signal strength signal intensity and the sinusoidal frequency that changes according to amplitude or frequency according to amplitude or frequency.Perhaps, can to be periodic signal worsening or approaching thresholding so that signal strength signal intensity is received in expression man-made noise, for example clatter (Click) or pond pond sound (Chirp), the cycle that their repeat changes the function of receiving change in signal strength as radiotelephone communication signals.The periodic signal of above-mentioned variation can be similar to wireless tuning indication.Man-made noise can be the speech information that synthesizes, and for example the speech of audio frequency " moves ", and it increases as receiving signal strength signal intensity intensity to reduce according to amplitude or frequency.
The present invention couple is also useful especially with the mobile radiotelephone of the automated power control of locating to use at transmitter (ground base station or satellite) (APC).Above-mentioned emissive power control system causes that transmitter increases its power so that response is being received an indication than low signal intensity from the mobile radiotelephone of mobile radiotelephone.This automatic power control system provides a strict more thresholding, because it prevents that the slow reduction of receiving signal strength signal intensity that automatic power control system can follow the tracks of is up to more power no longer is provided.
According to the present invention, transmitter is with radiotelephone communication transmitting power index signal.The transmitting power index signal of receiving according to the response radio telephone also produces audio frequency aligning direction signal, produce a signal strength signal intensity indication by this, above-mentioned signal strength signal intensity indication is the function of receiving the function of the signal strength signal intensity of radiotelephone communication and receiving the transmitting power of radiotelephone communication.Therefore, along with the increase of transmitting power, for example, the amount of inserting man-made noise also increases, and prompting is aimed at antenna direction again so that can use the transmitting power of reduction by this.
The present invention points out the user to aim at wireless telephonic antenna direction again so that obtain higher reception by audio frequency man-made noise signal is inserted the audio frequency radiotelephone communication.Can point out the user before reaching audio frequency deterioration communication, to aim at antenna direction again, improved mobile radiotelephone communication is provided by this.
The accompanying drawing summary
Fig. 1 is a block diagram that can be used for mobile radiotelephone of the present invention.
Fig. 2 is the block diagram of a receiving digital signals processor (DSP), and it produces according to aligning direction signal of the present invention.
Fig. 3 has illustrated the work that produces first aligning direction signal according to the present invention.
Fig. 4 has illustrated the work that produces second aligning direction signal according to the present invention.
Fig. 5 is a block diagram of handling to receive signal according to second embodiment of the present invention.
Fig. 6 is a block diagram according to the demodulator of second embodiment of the present invention.
The preferred embodiment detailed Description Of The Invention
After this will more at large describe the present invention with reference to accompanying drawing, the preferred embodiments of the invention are shown in the drawings.Yet, also can realize the present invention and should not release only being limited to the embodiment that proposes herein with many different forms.Otherwise it is for content disclosed herein is comprehensive and perfect more that these embodiments are provided, and will express scope of the present invention to those skilled in the art person all sidedly.All same numberings refer to same unit in institute's drawings attached.
Referring now to Fig. 1, it shows the functional-block diagram that can be used for mobile radiotelephone of the present invention.Mobile radiotelephone 100 can be vehicle-mounted mobile radiotelephone, but hand-held mobile radio phone preferably.Mobile radiotelephone 100 generally receives radiotelephone communication from the satellite (not shown) of ground base station 155 or injection.Fig. 1 is the reduced representation of bimodulus cellular radio, at common inventor Paul W.Dent and Bjorn Ekelund and authorize U.S. patent application serial number No.07/967 to this agent parent company, 027, be entitled as and more at large described above-mentioned bimodulus cellular radio in " multimode signal processing ", the content of announcing is incited somebody to action combination in view of the above as a reference herein.
In brief, the function of antenna 145, radio receiving-transmitting unit 140 and receiving digital signals processor (DSP) 125 is as the device that is used to receive radiotelephone communication 150.Receive DSP125 and handle the signal of receiving from radio receiving-transmitting unit via dsp interface 135, and its generation can be loaded on speech coder 115 so that send digital audio signal by acoustic frequency sensor (for example loud speaker 110).Send DSP120 and receive, and it produces this signal and sends to dsp interface by radio receiving-transmitting unit 140 and antenna 145 via the digital voice signal of speech coder 115 from microphone 105.Some of microcontroller 130 control mobile radiotelephones 100 or all devices.The design of mobile radiotelephone 100 is well-known to those skilled in the art person, needn't at large describe at this.
Be embodied as one the pick of of the present invention and receive upward executable stored program of DSP125, for example above-mentioned reception DSP125 can be Texas instrument C53 digital signal processor (Texas Instruments C53 DSP).Yet, also can realize the present invention or partly realize as executable stored program on microcontroller 130 or another processor.Selectively, can use the logical design of customization or the combination of software and hardware.In the artificial antenna telephone system, can use analogue device.
Referring now to Fig. 2, will the block diagram of the reception DSP125 of Fig. 1 of configuration according to the present invention be described.Just as shown in Figure 2, receive DSP125 and comprise signal of communication generation device 210, said apparatus 210 produces digital received radio communication (speech) signal 250 according to the radiotelephone communication of receiving from dsp interface 135.Signal of communication 250 is loaded on speech coder 115 so that be converted into analog signal, provide above-mentioned analog signal to loud speaker 110 so that produce the audio frequency radiotelephone communication.Signal of communication generation device 210 can comprise that digital speech decoding and error correction are so that use the known technology of those skilled in the art person to produce the receiver of sharp cut-off.In this type of coded digital system, when radiotelephone communication receives that the intensity of signal is on first thresholding, produce the audio frequency radiotelephone communication signals, and when the intensity of receiving signal is in first thresholding under the time, inhibition audio frequency radiotelephone communication signals.
Still with reference to Fig. 2, receive DSP125 and also comprise aligning direction signal generation device 220.Aligning direction signal generation device 220 can receive the indication of having received signal to noise ratio from dsp interface 135.As this professional skill field personnel understood, radio receiving-transmitting unit 140 can produce the index signal of having received signal strength signal intensity.Perhaps, receiving DS1P125 or microcontroller 130 can be according to receiving that radio communication produces the index signal of having received signal strength signal intensity.The generation of having received the index signal of signal strength signal intensity is well-known and needn't describes further the personnel of this professional skill field.Aligning direction signal generation device 220 produces aligning direction signal or alarm signal 240, and it is the function of receiving signal strength signal intensity of radiotelephone communication signals.
Receive that by merge numeral at summer 230 places wireless communication signals 250 and aligning direction signal 240 insert the audio frequency wireless communication signals to aligning direction signal 240.Summer 230 generations offer speech coder 115 and reach the combined signal 260 of broadcasting via loud speaker 110 so that be converted into analog signal.Be understandable that unnecessary merging wireless communication signals 250 and aligning direction signal 250, yet, provide above-mentioned wireless communication signals 250 and aligning direction signal 250 so respectively to one or more loud speaker or earphone 110 as long as audio frequency aligning direction signal is inserted the audio frequency radiotelephone communication.In the embodiment of Fig. 2, aligning direction signal processing apparatus 220 and summer 260 have constituted the audio frequency aligning direction signal that is used for being the function of aerial for radio telephone directivity and have inserted the insertion device of audio frequency radiotelephone communication.Acoustic frequency sensor device such as loud speaker 110 and speech coder 115, their responses receive digital processing 125 and merge the sound signal of receiving radiotelephone communication signals 250 and aligning direction signal 240 so that the audio frequency radiotelephone communication is inserted in the indication of sound signal intensity so that produce.
Referring now to Fig. 3, use description to produce the work of first embodiment of aligning direction signal (square frame 220 of Fig. 2) below.Specifically, at square frame 310 places, produce an increase signal of receiving signal intensity function as reduction.At square frame 320 places, produce and in proportion or amplify an artificial noise signal by the signal that produces at square frame 310 places.Therefore, produce its amplitude and receive the man-made noise of the increase of signal intensity function, the artificial indication that provides the signal strength signal intensity gradual change to worsen in view of the above as reduction.At square frame 330 places, the man-made noise that has amplified is inserted the audio frequency radiotelephone communication.
The broadband noise that the understandable man-made noise signal of those skilled in the art person can be white noise, pink noise or any other type, it perhaps can be the noise of single frequency or a plurality of frequencies, for example sinusoidal noise or a plurality of sinusoidal noise, their amplitude increases or reduces with the reduction of receiving signal strength signal intensity.The audio frequency indication of preferably selecting to increase with signal intensity has the characteristic of " comfort ", music tonic chord sound for example, yet, will have the characteristic of " discomfort ", for example white noise or incongruous sound with the audio frequency indication that worsens signal and increase.In the digital system of the cut-off threshold that provides the communication of being lower than to stop, the man-made noise signal becomes audio frequency and become stronger when receiving that signal strength signal intensity has surpassed thresholding when being preferably on the thresholding, time prompting user aims at the aerial for radio telephone direction again so that recover communication and be lower than thresholding.
Referring now to Fig. 4, second embodiment of the generation aligning direction signal 220 of Fig. 2 will be described below.At square frame 410 places, produce first and receive the increase signal of signal intensity function, as described in conjunction with square frame 310 as reduction.At square frame 420 places, produce second signal that increases as the function that increases transmitting power.
Those skilled in the art person is understandable in the mobile radio telephone system of having used automatic transmitting power control, base station 155 (Fig. 1) or satellite response mobile radiotelephone 100 is being received the indication that is lower than desired signal intensity so that increase its transmitting power, and its response mobile radiotelephone 100 is receiving that indication greater than desired signal intensity is so that reduce its transmitting power.According to the present invention, provide the indication of base station or satellites transmits power at sending direction by the down link of the radiotelephone communication 150 that mobile radiotelephone received.Therefore, at square frame 220 places, produce second signal that increases as coming automatic network to increase the function of transmitting power.Therefore, come the FEEDBACK CONTROL audio frequency indication prompting user of automatic network to aim at its antenna direction again so that improvement or up link or down link.
Continue the description of Fig. 4,, merge first and second signal so that produce the 3rd signal that changes as the function of first and second signal at square frame 430 places.For example, the 3rd signal will be received the function of signal strength signal intensity and increase as reduction, and it also increases as the function that increases transmitting power.Therefore, when increasing generation power, the aligning direction signal will increase points out the user to aim at antenna direction again so that transmitter can produce lower transmitting power.At square frame 440 places, produce the aligning direction signal.At square frame 440 places, the man-made noise signal is periodic signal, for example sine wave or clatter (Click), and its frequency is based on the value of the 3rd signal and changes.Therefore, the man-made noise signal of above-mentioned variable frequency provides tuning indication, for example, and signal strength signal intensity that wherein higher frequency representation is lower and higher transmitting power.At square frame 450 places, man-made noise is inserted radiotelephone communication.
Therefore, the present invention has produced an audio frequency aligning direction signal, this audio frequency aligning direction signal is the function of the directivity of aerial for radio telephone (also may be the transmitting power of base station or satellite), and the aerial for radio telephone that its expression receives radiotelephone communication is aligning direction or does not have aligning direction.Point out direction that the user aims at antenna again so that the aligning direction signal reduces subsequently.The invention provides that the comfort that can be used in analogue system worsens indication so that provided comfort to worsen indicating device before the real system noise begins to insert, and the present invention also provide can be used in the digital system that adopts coding in case indication be about near or passed through cut-off threshold.The prompting user aims at the direction of antenna again and recovers high-quality signal.
Referring now to Fig. 5, second embodiment of the present invention has been described.Fig. 5 has illustrated that received signal is handled or in radio telephone or the different layouts of the block diagram in transmitter (ground base station or satellite).Fig. 5 is the function distribution figure corresponding to the hardware arrangement of Fig. 1.
According to authorizing Dent to the associating inventor, the U.S. patent application serial number No.08/305 that submits on September 14th, 1994,727, be entitled as " channel is equalizing device independently ", can carry out demodulation and error-correcting decoding by maximum-likelihood sequence estimator, the content of its announcement is incorporated into herein as a reference in view of the above.With reference to figure 6, Viterbi sequence maximum-likelihood sequence estimator comprises that being used to store a plurality of hypothesis has received the status register 65 of symbol sebolic addressing with the path metrics of each expression cumulative probability.Processing comprises uses transmitter module 60, and above-mentioned transmitter module 60 can comprise the model that is called the resulting propagation channel of known bits sequence of training sequence or symbol numeral according to processing.In the reference vector battle array of status register, realized the latter's information.
The work of Fig. 6 has more at large been described in conjunction with present patent application.Foregoing description can be revised so that the indication of tuned noise is provided according to embodiment of the present invention.
As the description of front, comparator 61 calculates hypothesis signal value and the actual difference of receiving between the signal value, and above-mentioned difference is owing to supposing that signal value is to have only radio noise to cause under the genuine situation.Be not the difference that abandons aforementioned calculation, but embodiment of the present invention write down each data symbol of the processing section of difference and status register together.When error correction coding produces the several sample value that has sent of each original data bits that be about to send, transmitter model 60 will similarly produce the several signal samples and the comparator 61 that are used for comparison will test above-mentioned a plurality of sample value so that obtain several differences.These differences merge according to quadratic sum usually so that obtained the mismatch indication before abandoning.
According to embodiment of the present invention, difference is stored in status register 65 corresponding to each bit decision of having handled.When selecting one of two hypothesis that compared to be used as the survivor, allow to cover the saved differences of another state from the saved differences of a state by the Viterbi method.The final bit decision of being carried out by Viterbi MLSE processor is to make squared difference and minimum bit.Therefore, Yu Xia error may be owing to be that radio noise rather than incorrect bit decision cause.The radio noise that the difference of therefore, having stored equals to receive and can export sound decorder 510 to.Speech coder 510 can increase the radio noise sample value to sound signal so that the user will hear the accurate expression of the radio noise characteristic that changes pari passu with signal to noise ratio rather than by the sharp cut-off thresholding of decode procedure.
Adopt the digital cordless phones of digitization of speech signals often not only to insert error detection coding but also inserted error correction coding, for example, in the digital speech transmission of being everlasting, add cyclic redundancy check (CRC) code (CRC) to the most responsive important bit.When CRC check is failed, prevent that by various similarly known " going belch " error covering strategies error bit from causing unwanted audio frequency artifacts.When the CRC failure reached 5% time quantum, this type of went the belch technology can maintain the voice quality of usefulness.Can be used for triggering for CRC failure detection and automatically add the indication of sound signal quality to phone output and take correct operation so that cause the user more than 5% time quantum.
Above-described embodiment has illustrated can be on principle to be extracted the noise that approaches real radio noise arbitrarily the decode procedure and represents and introduce sound signal again artificially so that provide and rise or the real indication of dropping signal quality that they are independent of the threshold performance of demodulator from separating to be in harmonious proportion.
The audio frequency indication that provides the signal quality that rises or descend in the mode that increases the weight of that may need with respect to signal to noise ratio.What for example, may need is the minimizing that represent signal to noise ratio 1dB to the user by 3dB or the 6dB with the indication of the audio frequency of artificial increase.Employing measures or selectively adopts the radio noise waveform of having stored can realize foregoing from the store path of decode procedure.The path metric direct proportion is in the average of radio noise square and can be used for according to radio noise or positively determine the audio frequency indication in proportion according to any power of radio noise level.
Reduce the complexity of demodulator and decode procedure if desired, the indication of the audio frequency of decision can be the audio frequency waveform of a pre-stored in proportion so by this.Just as previously described, when representing the signal quality that is descending, can select this kind waveform is " uncomfortable " sound.Otherwise, when inverse proportion decision during, can use " comfortable " waveform promptly divided by the power power of path metric, master music chord for example is so that its intensity increases with the signal quality that is rising.Also can use uncomfortable sound that increases with noise level and this both combination of comfortable sound that increases with the signal level, but when " the tuning indication of audio frequency " that the user has selected to be about to enable, at least " comfortable " sound should be audio frequency in case be not the voice conversation of better signal to noise ratio during can prevent that it from causing and take sb's mind off sth.
Network selectively or additionally can send as described previously command messages to controller 130 so that remotely open or close the audio frequency indication so that redirect antenna direction.Can be by network or based on the measured signal strength signal intensity of mobile phone and send as to the signal strength signal intensity report of network or can receiver Network Based receive that signal strength signal intensity that the transmission of mobile phone is measured or the two make up and issue this kind order.
What also may need is that audio frequency tone represents that to the user signal quality is not in talking state, and this moment, its phone was received signal bursts periodically on talk channel.For save the power of battery, just mobile phone is not to receive continuously but only allocate in advance to being called under the sleep pattern of each mobile unit herein at network and wake up in idle mode.For example, this may occur according to the interval of having only 1 second (s).Network knows when mobile receiver will be in the state that wakes and the call-reminding of giving receiver only just sends in the above-mentioned time.According to the interval of having only 1 second (s) adopt the signal receive may be too slow a bit so that can not provide the signal quality of the idle condition of optimizing by the portable antenna position to indicate to the user.If necessary, can require the user by enable the audio frequency indication by next key, when phone was in idle pulley, the above-mentioned bond energy of pressing enough temporarily made receiver work continually so that measure the signal strength signal intensity that is used to be intended to be to aim at antenna direction continuously or at least enough.
When not being in talking state, providing the audio frequency indication of various " comforts " not have weak point, for example above-mentioned various comforts can be with improving music drone the sound (Hum) that signal quality intensity rises.The instruction that can abridge subsequently and " be used for maximum drone father-in-law's sound aligning " in equipment user's handbook, it is the instruction that the user is easy to follow.Different " drone sounds " can be provided, depend on the characteristic of the network station that phone locks, for example, when telephone lock due to based on the cellular system on land the time, one " drone sound at interval ".
Reach detailed description with reference to the accompanying drawings, typical preferred embodiment of the present invention is disclosed, although adopted specific term, be to use them to have general and describing significance rather than purpose in order to limit, the scope that the present invention proposes will be in following claim.
Claims (41)
1. mobile radiotelephone comprises:
The mobile radiotelephone antenna;
Be used for receiving the device of radiotelephone communication via above-mentioned mobile radiotelephone antenna;
Respond above-mentioned receiving system, be used for conversion and receive that radiotelephone communication becomes audio frequency radiotelephone communication device; And
Be used to respond above-mentioned receiving system, audio frequency aligning direction signal is inserted the device of audio frequency radiotelephone communication, point out wireless telephone user by this so that aiming at above-mentioned aerial for radio telephone again improves with respect to the aligning direction of receiving radiotelephone communication, wherein above-mentioned audio frequency aligning direction signal is the function of aerial for radio telephone orientation.
2. according to the mobile radiotelephone of claim 1, it is characterized in that, wherein above-mentioned reception radiotelephone communication contains the intensity of receiving signal, above-mentionedly receive that the intensity of signal is the function of the position of above-mentioned aerial for radio telephone, above-mentioned insertion device comprises the device that is used to insert an audio frequency aligning direction signal, and above-mentioned audio frequency aligning direction signal is a function of receiving signal strength signal intensity of receiving radiotelephone communication.
3. according to the mobile radiotelephone of claim 2, it is characterized in that,
Wherein above-mentioned receiving system comprises the receiving system of sharp cut-off, when receive radiotelephone communication receive that signal strength signal intensity is lower than thresholding the time, it is used to the radiotelephone communication that suppresses to receive; And
Wherein above-mentioned insertion device comprises being used to insert audio frequency aligning direction signal so that notice is received the intensity of signal reduces to the device under the thresholding, and above-mentioned audio frequency aligning direction signal is the function of receiving signal strength signal intensity of radiotelephone communication signals.
4. according to the mobile radiotelephone of claim 3, it is characterized in that wherein the receiving system of above-mentioned sharp cut-off comprises digital coding radio telephone receiving system.
5. according to the mobile radiotelephone of claim 1, it is characterized in that wherein above-mentioned insertion device comprises and is used for the man-made noise that changes as the function of aerial for radio telephone directivity is inserted the audio frequency radiotelephone communication.
6. according to the mobile radiotelephone of claim 2, it is characterized in that, wherein above-mentioned insertion device comprises and is used for man-made noise is inserted the audio frequency radiotelephone communication that the amplitude response radiotelephone communication signals of above-mentioned man-made noise is received the reduction of signal strength signal intensity and increased.
7. according to the mobile radiotelephone of claim 2, it is characterized in that, wherein above-mentioned insertion device comprises and being used for periodically man-made noise insertion audio frequency radiotelephone communication that the periodic response radiotelephone communication signals of above-mentioned man-made noise is received the reduction of signal strength signal intensity and changed.
8. according to the mobile radiotelephone of claim 1, it is characterized in that, wherein above-mentioned insertion device responds the transmitting power of the signal that expression received by above-mentioned receiving system further, it is used to insert the aligning direction signal, orientation that above-mentioned aligning direction signal is an aerial for radio telephone and the function of receiving the transmitting power of radiotelephone communication.
9. according to the mobile radiotelephone of claim 1, it is characterized in that,
Wherein above-mentioned conversion equipment comprises and being used for from receiving the device of aerogram communication cancelling noise; Be used for producing estimation from receiving the estimation unit of the noise that aerogram communication is rejected; And
Wherein above-mentioned insertion device comprises the estimation unit that response is above-mentioned, is used to produce the device of the audio frequency index signal that changes as the function of estimating; And the device that is used for the audio frequency index signal is inserted the audio frequency radiotelephone communication.
10. according to the mobile radiotelephone of claim 9, it is characterized in that wherein above-mentioned estimation unit comprises an error correcting deocder that contains the path metric device.
11. the mobile radiotelephone according to claim 9 is characterized in that, wherein above-mentioned estimation unit comprises a Viterbi sequence maximum-likelihood sequence estimator.
12. the mobile radiotelephone according to claim 9 is characterized in that, wherein above-mentioned estimation unit comprises:
Respond above-mentioned receiving system, be used to calculate the device of expection radiotelephone communication;
Response aforementioned calculation device is used for relatively expecting radiotelephone communication and receives radiotelephone communication so that obtain expecting radiotelephone communication and receive the device of difference between the radiotelephone communication; And
Be used to respond above-mentioned comparison means, produce device based on the error signal of resultant difference.
13. mobile radiotelephone according to claim 1, it is characterized in that, the wherein above-mentioned radiotelephone communication of receiving comprises cyclic redundancy check (CRC), and above-mentioned insertion device comprises that being used for one is that the audio frequency aligning direction signal of the function of cyclic redundancy check (CRC) failure inserts and receives the device of radiotelephone communication.
14. mobile radiotelephone according to claim 1, it is characterized in that, wherein above-mentioned insertion device comprises that being used to insert one is the device of aligning direction signal of audio frequency comfort of the function of receiving signal strength signal intensity of receiving the increase of radiotelephone communication, and to be used to insert one be the device of aligning direction signal of audio frequency discomfort of the function of receiving signal strength signal intensity of receiving the reduction of radiotelephone communication.
15. the mobile radiotelephone according to claim 1 is characterized in that, wherein above-mentioned conversion equipment comprises:
Be used for from receiving the device of radiotelephone communication cancelling noise;
Respond above-mentioned device for eliminating, being used for detecting above-mentioned device for eliminating can not be from receiving the Error Detection Unit of radiotelephone communication cancelling noise;
Respond above-mentioned Error Detection Unit, be used for being buried in and receive that radiotelephone communication does not have the error concealment device of the noise effect of rejecting;
The above-mentioned Error Detection Unit of wherein above-mentioned insertion device response.
16. be used for the base station of in mobile radio communications system, communicating by letter, comprise with mobile radiotelephone:
Be used for according to sending the variable power emitter of radio communication to mobile radiotelephone as the power level that changes with respect to the function of the position of the mobile radiotelephone of base station; And
Be used to cause that transmitted power level that above-mentioned variable power emitter sends a radio communication indicates the device to mobile radiotelephone.
17. the base station according to claim 16 is characterized in that, wherein above-mentioned base station is ground base station or satellite base station.
18. mobile radiotelephone comprises:
Be used to receive the device of radiotelephone communication;
Be used to respond above-mentioned receiving system, produce the signal intensity indicating equipment of a signal strength signal intensity indication, above-mentioned signal strength signal intensity indication is a function of receiving the signal strength signal intensity of radiotelephone communication; And
Be used to respond above-mentioned receiving system and above-mentioned signal intensity indicating equipment, produce merged receive radiotelephone communication with the sound signal of above-mentioned signal strength signal intensity indication so that provide the audio frequency sensing device of sound signal intensity indication with the audio frequency radiotelephone communication.
19. mobile radiotelephone according to claim 18, it is characterized in that, wherein above-mentioned receiving system comprises the receiving system of sharp cut-off, when receiving that the signal strength signal intensity of receiving radiotelephone communication is higher than thresholding, it is used to produce the audio frequency radiotelephone communication signals, when receiving that the signal strength signal intensity of receiving radiotelephone communication is lower than thresholding, it is used to suppress the audio frequency radiotelephone communication; And
Wherein above-mentioned signal intensity indicating equipment comprises that being used to produce signal strength signal intensity indicates so that represent to receive that signal strength signal intensity is approaching the device of thresholding, and above-mentioned signal strength signal intensity indication is the function of receiving signal strength signal intensity of radiotelephone communication signals.
20. the mobile radiotelephone according to claim 19 is characterized in that, wherein above-mentioned sharp cut-off receiving system comprises digital coding radio telephone receiving system.
21. mobile radiotelephone according to claim 19, it is characterized in that, wherein above-mentioned signal intensity indicating equipment comprises and is used to produce a man-made noise so that indication receives that signal strength signal intensity is reducing the device that is tending towards thresholding that the amplitude of above-mentioned man-made noise is to receive the function of signal strength signal intensity and increase as the reduction of radiotelephone communication signals.
22. mobile radiotelephone according to claim 21, it is characterized in that, wherein above-mentioned signal intensity indicating equipment comprises that the signal strength signal intensity of receiving that is used for from being on the above-mentioned thresholding receives that signal strength signal intensity produces a man-made noise so that indication receives that signal strength signal intensity has been reduced to the device under the thresholding to being under the above-mentioned thresholding, and the amplitude of above-mentioned man-made noise is to receive the function of signal strength signal intensity and increase as the reduction of radiotelephone communication signals.
23. mobile radiotelephone according to claim 19, it is characterized in that, wherein above-mentioned signal intensity indicating equipment comprises and is used to produce the periodicity man-made noise so that the device that signal strength signal intensity is reducing towards threshold value is received in indication that the periodicity of above-mentioned man-made noise is received the variation of signal strength signal intensity as radiotelephone communication signals and changed.
24. mobile radiotelephone according to claim 23, it is characterized in that, wherein above-mentioned signal intensity indicating equipment comprises that the signal strength signal intensity of receiving that is used for from being on the above-mentioned thresholding receives that signal strength signal intensity produces the one-period man-made noise so that indication receives that signal strength signal intensity has been reduced to the device under the thresholding to being under the above-mentioned thresholding, and the amplitude of above-mentioned periodicity man-made noise is to receive the variation of signal strength signal intensity and change as the reduction of radiotelephone communication signals.
25. mobile radiotelephone according to claim 18, it is characterized in that, wherein above-mentioned signal intensity indicating equipment respond further expression by the transmitting power of above-mentioned receiving system received signal so that produce a signal strength signal intensity indication, above-mentioned signal strength signal intensity indication is the function of receiving the signal strength signal intensity of radiotelephone communication and receiving the signal transmission power of radiotelephone communication.
26. the mobile radiotelephone according to claim 18 is characterized in that, wherein above-mentioned signal intensity indicating equipment comprises:
Be used for from receiving the device of radiotelephone communication cancelling noise;
Be used for producing estimation unit from the estimation of receiving radiotelephone communication institute cancelling noise;
Wherein above-mentioned signal strength signal intensity indication is the function of estimating.
27. the mobile radiotelephone according to claim 26 is characterized in that, wherein above-mentioned estimation unit comprises an error correcting deocder that contains the path metric device.
28. the mobile radiotelephone according to claim 26 is characterized in that, wherein above-mentioned estimation unit comprises a Viterbi sequence maximum-likelihood sequence estimator.
29. the mobile radiotelephone according to claim 26 is characterized in that, wherein above-mentioned estimation unit comprises:
Respond above-mentioned receiving system, be used to calculate the device of expection radiotelephone communication;
Response aforementioned calculation device is used for relatively expecting radiotelephone communication and receives radiotelephone communication so that obtain expecting radiotelephone communication and receive the device of difference between the radiotelephone communication; And
Respond above-mentioned comparison means, be used to produce device based on the error signal of resultant difference.
30. mobile radiotelephone according to claim 18, it is characterized in that, the wherein above-mentioned radiotelephone communication of receiving comprises cyclic redundancy check (CRC), above-mentioned signal intensity indicating equipment comprises the device that is used to produce the signal strength signal intensity indication, and above-mentioned signal strength signal intensity indication is the function of the failure of the cyclic redundancy check (CRC) in receiving radiotelephone communication.
31. mobile radiotelephone according to claim 18, it is characterized in that, wherein above-mentioned signal intensity indicating equipment comprises that being used to produce one is the device of aligning direction signal of audio frequency comfort of the function of receiving signal strength signal intensity of receiving the increase of radiotelephone communication, and to be used to produce one be the device of aligning direction signal of audio frequency discomfort of the function of receiving signal strength signal intensity of receiving the reduction of radiotelephone communication.
32. the mobile radiotelephone according to claim 18 is characterized in that, wherein above-mentioned signal intensity indicating equipment comprises:
Be used for from receiving the device of radiotelephone communication cancelling noise;
Respond above-mentioned device for eliminating, being used for detecting above-mentioned device for eliminating can not be from receiving the Error Detection Unit of radiotelephone communication cancelling noise; And
Be used to respond above-mentioned Error Detection Unit, be buried in the error concealment device of receiving the noise effect that does not have rejecting in the radiotelephone communication.
33. be used for receiving the antenna alignment direction indicating method of the mobile radiotelephone of radiotelephone communication via the mobile radiotelephone antenna, the conversion of above-mentioned mobile radiotelephone receives that radiotelephone communication becomes the audio frequency signal of communication, above-mentioned and step that the antenna alignment direction indicating method comprises:
Audio frequency aligning direction signal is inserted the audio frequency radiotelephone communication, point out wireless telephone user by this so that aiming at above-mentioned aerial for radio telephone direction again improves with respect to the aligning direction of receiving radiotelephone communication, wherein above-mentioned audio frequency aligning direction signal is the function of aerial for radio telephone directivity.
34. antenna alignment direction indicating method according to claim 33, it is characterized in that, wherein above-mentioned reception radiotelephone communication contains the intensity of receiving signal, above-mentionedly receives that the intensity of signal is the function of the position of above-mentioned aerial for radio telephone, the step that above-mentioned insertion device comprises:
An audio frequency aligning direction signal is inserted the audio frequency radiotelephone communication, and above-mentioned audio frequency aligning direction signal is a function of receiving signal strength signal intensity of receiving radiotelephone communication.
35. the antenna alignment direction indicating method according to claim 34 is characterized in that, wherein above-mentioned inserting step comprises the step of the man-made noise that changes as the function of aerial for radio telephone directivity being inserted the audio frequency radiotelephone communication.
36. antenna alignment direction indicating method according to claim 34, it is characterized in that, wherein above-mentioned inserting step comprises the step of man-made noise being inserted the audio frequency radiotelephone communication, and the amplitude response radiotelephone communication signals of above-mentioned man-made noise is received the reduction of signal strength signal intensity and increased.
37. antenna alignment direction indicating method according to claim 34, it is characterized in that, wherein above-mentioned inserting step comprises inserts the step of audio frequency radiotelephone communication to the periodicity man-made noise, and the periodic response radiotelephone communication signals of above-mentioned man-made noise is received the reduction of signal strength signal intensity and changed.
38. the antenna alignment direction indicating method according to claim 33 is characterized in that, wherein above-mentioned mobile radiotelephone receives the transmitting power index signal further, and the step that comprises of the step of wherein above-mentioned insertion:
The aligning direction signal is inserted the audio frequency radiotelephone communication, directivity that above-mentioned aligning direction signal is an aerial for radio telephone and the function of receiving the transmitting power of radiotelephone communication.
39. the antenna alignment direction indicating method according to claim 33 is characterized in that,
Wherein above-mentioned mobile radiotelephone comprises and being used for from receiving the device of radiotelephone communication cancelling noise; And be used for producing estimation unit from the estimation of receiving radiotelephone communication institute cancelling noise; And
Wherein above-mentioned inserting step comprises that generation changes the step of audio frequency index signal as the function of estimating; And the radiotelephone communication of audio frequency index signal insertion audio frequency.
40. antenna alignment direction indicating method according to claim 33, it is characterized in that, the wherein above-mentioned radiotelephone communication of receiving comprises cyclic redundancy check (CRC), above-mentioned inserting step comprises the step of inserting audio frequency aligning direction signal, and above-mentioned audio frequency aligning direction signal is the function of the failure of the cyclic redundancy check (CRC) in receiving radiotelephone communication.
41. the antenna alignment direction indicating method according to claim 37 is characterized in that, the step that wherein above-mentioned inserting step comprises:
Insert audio frequency comfort aligning direction signal, above-mentioned audio frequency comfort aligning direction signal is a function of receiving signal strength signal intensity of receiving that radiotelephone communication increases; And
Insert audio frequency discomfort aligning direction signal, this audio frequency discomfort aligning direction signal is a function of receiving signal strength signal intensity of receiving that radiotelephone communication reduces.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US61549796A | 1996-03-12 | 1996-03-12 | |
| US08/615,497 | 1996-03-12 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1213471A true CN1213471A (en) | 1999-04-07 |
| CN1135755C CN1135755C (en) | 2004-01-21 |
Family
ID=24465640
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB97193004XA Expired - Fee Related CN1135755C (en) | 1996-03-12 | 1997-03-07 | Method and apparatus for antenna realignement in mobile radiotelephone using injected audio signal |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP0895678A2 (en) |
| JP (1) | JP2000506699A (en) |
| KR (1) | KR100349192B1 (en) |
| CN (1) | CN1135755C (en) |
| AU (1) | AU722052B2 (en) |
| BR (1) | BR9708051A (en) |
| WO (1) | WO1997034381A2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102546513A (en) * | 2012-01-20 | 2012-07-04 | 清华大学 | Method and system for designing time domain man-made noises in orthogonal frequency division multiplexing system |
| CN103907380A (en) * | 2011-10-19 | 2014-07-02 | 英派尔科技开发有限公司 | Changing the orientation of a user based at least in part on transmit power |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6411826B1 (en) | 1998-11-17 | 2002-06-25 | Ericsson Inc. | Portable radiotelephones including patch antennas having openings therein |
| JP3691365B2 (en) * | 2000-08-23 | 2005-09-07 | 三洋電機株式会社 | Digital broadcast receiver |
| GB0104282D0 (en) * | 2001-02-21 | 2001-04-11 | Cambridge Silicon Radio Ltd | Communication system |
| WO2005009026A1 (en) * | 2003-07-21 | 2005-01-27 | Koninklijke Philips Electronics N.V. | Image alignment |
| US8600325B2 (en) | 2010-04-09 | 2013-12-03 | Harris Corporation | Simulated degradation of SNR in decoded digital audio correlated to wireless link bit-error rate |
| US9037164B2 (en) | 2011-10-19 | 2015-05-19 | Empire Technology Development Llc | Changing the orientation of a user based at least in part on transmit power |
| KR101669354B1 (en) * | 2015-01-26 | 2016-11-09 | 한국과학기술원 | Apparatus and Method for compensation the position of the antenna in communication with the orbital angular momentum |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4020694A1 (en) * | 1990-06-29 | 1992-01-02 | Philips Patentverwaltung | RADIO RECEIVER WITH ACOUSTIC SIGNAL |
| US5327457A (en) * | 1991-09-13 | 1994-07-05 | Motorola, Inc. | Operation indicative background noise in a digital receiver |
| US5257408A (en) * | 1992-04-30 | 1993-10-26 | Motorola, Inc. | Method for seeking a communication system |
| JPH0832508A (en) * | 1994-07-19 | 1996-02-02 | Kokusai Electric Co Ltd | Digital mobile radio equipment, digital mobile radio reception method and digital mobile radio transmission and reception method |
-
1997
- 1997-03-07 WO PCT/US1997/003558 patent/WO1997034381A2/en not_active Application Discontinuation
- 1997-03-07 CN CNB97193004XA patent/CN1135755C/en not_active Expired - Fee Related
- 1997-03-07 AU AU20716/97A patent/AU722052B2/en not_active Ceased
- 1997-03-07 JP JP9532694A patent/JP2000506699A/en not_active Ceased
- 1997-03-07 BR BR9708051A patent/BR9708051A/en not_active IP Right Cessation
- 1997-03-07 KR KR1019980707145A patent/KR100349192B1/en not_active IP Right Cessation
- 1997-03-07 EP EP97908929A patent/EP0895678A2/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103907380A (en) * | 2011-10-19 | 2014-07-02 | 英派尔科技开发有限公司 | Changing the orientation of a user based at least in part on transmit power |
| CN103907380B (en) * | 2011-10-19 | 2017-07-28 | 英派尔科技开发有限公司 | Transmission power is based at least partially on to change the orientation of user |
| CN102546513A (en) * | 2012-01-20 | 2012-07-04 | 清华大学 | Method and system for designing time domain man-made noises in orthogonal frequency division multiplexing system |
| CN102546513B (en) * | 2012-01-20 | 2014-09-24 | 清华大学 | Method and system for designing time domain man-made noises in orthogonal frequency division multiplexing system |
Also Published As
| Publication number | Publication date |
|---|---|
| WO1997034381A3 (en) | 1997-11-06 |
| WO1997034381A2 (en) | 1997-09-18 |
| AU722052B2 (en) | 2000-07-20 |
| CN1135755C (en) | 2004-01-21 |
| KR100349192B1 (en) | 2002-12-26 |
| JP2000506699A (en) | 2000-05-30 |
| EP0895678A2 (en) | 1999-02-10 |
| KR19990087680A (en) | 1999-12-27 |
| BR9708051A (en) | 1999-07-27 |
| AU2071697A (en) | 1997-10-01 |
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