KR19990087680A - Method and apparatus for antenna realignment of mobile radiotelephone using injected audio signal - Google Patents

Abstract

Mobile radiotelephones inject audible alignment signals, which are a function of the orientation of the radiotelephone antenna, into audible radiotelephone communication. The audible alignment signal prompts the radiotelephone user to redirect the improved alignment radiotelephone antenna as a source of radiotelephone communication. The audible alignment signal is preferably a function of the received signal strength of the radiotelephone communication. The audible alignment signal is preferably similar noise injected into the radiotelephone loudspeaker together with the radiotelephone communication signal, thereby restoring a dependently slow deterioration operation to the received radiotelephone communication. Similar noise injection is well used with coded digital radiotelephone systems that do not audibly degrade until the threshold is reached, and communication is suppressed below the threshold. Similar noise injection can also be used as a variable power base station.

Description

Method and apparatus for antenna rearrangement of mobile radiotelephone using injected audio signal

BACKGROUND OF THE INVENTION Wireless communication systems are increasingly being used for wireless mobile communication. Wireless communication systems use mobile radiotelephones that communicate with terrestrial base stations or orbital satellites. An example of a mobile radiotelephone communication system is a cellular telephone system. Cellular telephone systems are wide area networks using frequency reuse patterns. The design and operation of an analog cellular telephone system is described in "Advanced Mobile Phone Service" by Blecher, IEEE Transactions on Vehicular Technology, Vol. VT29, No. 2, May 1980, pp. 238-244. Analog mobile cellular systems are also called "AMPS" systems.

Recently, digital cellular telephone systems have been proposed and implemented using time division multiple access (TDMA) technology. The standard was also established by the EIA and TIA for US Digital Cellular (ADC) technology in accordance with the Electronics Industry Association / Telecommunications Industry Association (EIA / TIA) document IS-54B. Telephones implementing the IS-54B dual mode architecture are commercially available by the assignee of the present invention. Other standards have spread in Europe for digital cellular telephone systems. European digital cellular systems, called GSM, use TDMA technology.

As is well known to those skilled in the art, a mobile radiotelephone includes an antenna and a transceiver for receiving radiotelephone communication via the mobile radiotelephone antenna. In a vehicle mobile radiotelephone, the antenna is typically installed in the vehicle body. In a portable mobile radiotelephone, the antenna typically protrudes from the housing of the portable radiotelephone. Proper antenna orientation for radiotelephone communications signals is important for clear reception without distortion or dropouts. As is well known, slight antenna redirection significantly improves radiotelephone reception. For example, the cellular phone suffers a loss of signal strength when the transmission is received from the rest of the user's head. Blocking the head can cause 6dB signal loss.

Since antenna orientation is important in mobile radiotelephones, many mobile radiotelephones display the received signal strength of the radiotelephone communication signal, which may prompt the user to redirect the antenna. In addition, the signal quality received in analog or uncoded digital mobile radiotelephone systems gradually degrades as the antenna's misalignment increases. Therefore, the noise level gradually increases, which allows the user to prompt the antenna to be redirected by moving the vehicle or portable radiotelephone to reduce the noise.

It is known to inject an audible alignment signal, which is a function of the orientation of the radiotelephone antenna, into an audible radiotelephone communication to prompt the radiotelephone user to redirect the improved alignment radiotelephone antenna to the received radiotelephone communication. See, for example, documents EP-A-531918, EP-A-464 911 and WO-A-95 21 494.

To improve communication efficiency, it is currently common to use digital voice coding and / or digital error correction coding in wireless communication systems. The digital coding is made possible by a very sharp cutoff below the threshold at good quality below a very low signal-to-noise ratio below 2dB. Therefore, the gentle degradation of the analog FM or uncoded system is eliminated and replaced by a sudden cut off below the threshold. In such a digitally coded wireless communication system, the poor directing direction causes the signal strength to drop below the threshold so that communication abruptly ceases. The decrease in signal strength is not accompanied by an increase in noise level that could prompt antenna redirection.

The present invention relates to a communication system and in particular a mobile radiotelephone communication system in communication with a terrestrial base station or orbital satellite.

1 is a block diagram of a mobile radiotelephone in which the present invention is used.

2 is a block diagram of a receiving digital signal processor (DSP) for generating an alignment signal in accordance with the present invention.

3 is an exemplary view of generating a first alignment signal in accordance with the present invention;

4 is an exemplary view of generating a second alignment signal in accordance with the present invention.

5 is a block diagram of received signal processing according to a second embodiment of the present invention.

6 is a block diagram of a demodulator according to a second embodiment of the present invention.

It is an object of the present invention to provide a system and method for directing a mobile radiotelephone antenna to received mobile radiotelephone communications.

It is another object of the present invention to provide a method and system for directing an antenna in a digital mobile radiotelephone that uses a coding technique and therefore generates a threshold that causes the signal to be blocked below a threshold.

The above and other objects of the present invention are provided by a mobile radiotelephone which injects into the audible radiotelephone communication an audible alignment signal which is a function of the direction of orientation of the radiotelephone antenna. An audible alignment signal prompts the radiotelephone user to redirect the improved alignment radiotelephone antenna to the source of radiotelephone communication.

In particular, the received radiotelephone communication has a received signal strength that is a function of the position of the radiotelephone antenna. According to the invention, an audible alignment signal which is a function of the received signal strength of the radiotelephone communication is injected into the audible radiotelephone signal. The audible alignment signal may be a direct function of the received signal strength, or it may be a function of other parameters, such as distortion or noise level, which indirectly depends on the signal strength. The audible alignment signal is an artificial noise injected into the radiotelephone loudspeaker along with the radiotelephone communication signal, thereby restoring a dependently slow deterioration behavior to the received radiotelephone communication. By similarly restoring a dependently slow degradation operation, the present invention prompts the user to redirect the radiotelephone antenna receiving the radiotelephone communication.

A mobile radiotelephone according to the invention comprises means for receiving radiotelephone communication and comprising an antenna and a radio transceiver. The signal strength indicating means generates a signal strength indication which is a function of the signal strength of the received radiotelephone communication in response to the receiving means. As mentioned above, the signal strength indication can be a direct or indirect function of signal strength. Acoustic conversion means, typically including one or more loudspeakers and earspeakers, and including a voice codec and other circuitry, for receiving an audible signal to generate an audible signal that combines received radiotelephone communications and signal strength indications. In response to the means, an audible signal strength indication is provided with the audible radiotelephone communication.

The present invention is particularly used in a digitally coded mobile radiotelephone or other mobile radiotelephone system in which the receiving means is a sudden blocking receiving means, the receiving means being capable of receiving an audible radiotelephone communication signal when the received signal strength of the radiotelephone communication signal is above a threshold. And the receiving means suppresses or blocks the audible radiotelephone communication signal when the received signal strength is below a threshold. In such a radiotelephone, the signal strength indicating means generates a warning signal which is a function of the received strength of the radiotelephone communication signal to indicate that the received signal strength approaches a threshold.

The signal strength indicating means comprises means for generating increasing similar noise as a function of decreasing the received signal strength of the radiotelephone communication signal, indicating that the received signal strength is lowered or approaching a threshold. Preferably, the similar noise increases as a function of a decrease in received signal strength from received signal strength above the threshold to received signal strength below the threshold, indicating that the received signal strength approaches and passes through the threshold. do. However, an audible indication is also used in which the density increases as the signal strength increases. Therefore, even after the radiotelephone communication signal is suppressed, the similar noise level may continue to prompt the user regarding antenna redirection to restore communication.

The similar noise may be a signal that is different from the received radiotelephone communication and that changes as a function of antenna orientation. For example, the quasi-noise may be broadband white noise or pink noise, a single sinusoidal frequency or multiple sinusoidal frequencies that vary in amplitude or frequency as signal strength decreases. Alternatively, the similar noise may be a periodic signal such as a click or chirp, the repetitive periodicity of which changes as a function of the change in the received signal strength of the radiotelephone communication signal, thereby receiving the received signal strength. Indicates that it is lowering or approaching the threshold. The change periodicity signal may be heard in a radio tune indication. The similar noise can also be in a synchronized voice message, such as an audible word " move ", which increases in amplitude or frequency as the received signal strength decreases.

The present invention is particularly useful in mobile radiotelephone systems that use automatic power control at a transmitter (ground base station or satellite). The transmit power control system causes the transmitter to increase its power in response to an indication from the mobile radiotelephone that receives the low signal strength. The automatic power control system even has a sharp threshold because it prevents signal degradation against the slow reduction of received signal strength that the automatic power control system can track until not much power is provided.

According to the present invention, the transmit power indication signal is transmitted by the transmitter together with the radiotelephone communication. The audible alignment signal is made in response to a transmit power indication signal received by the radiotelephone, generating a signal strength indication that is a function of the transmit power of the received radiotelephone communication and the signal strength of the received radiotelephone communication. Thus, for example, as the transmit power increases, the amount of similar noise injected also increases, prompting the direction of orientation of the antenna so that the reduced transmit power level can be used.

The present invention prompts the user for a good receiving radiotelephone antenna by injecting an audible pseudonoise signal into an audible radiotelephone communication. The user may be prompted to redirect the antenna before an audibly degraded communication arrives. Thus, improved mobile radiotelephone communications are provided.

The invention is explained more fully hereinafter with reference to the accompanying drawings, in which preferred embodiments of the invention are shown. However, the invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; Rather, these embodiments are provided so that this disclosure will be thorough and will fully convey the scope of the invention to those skilled in the art. Like numbers refer to like elements throughout.

1, a functional block diagram is shown in which the present invention may be used. The mobile radiotelephone 100 may be a vehicle mobile radiotelephone but is preferably a portable mobile radiotelephone. Mobile radiotelephone 100 typically receives radiotelephone communication 150 from a terrestrial base station 155 or an orbiting satellite (not shown). 1 is assigned to the parent company of the assignee and described in more detail in US Patent Application No. 07 / 967,027 entitled “Multi-Mode Signal Processing” by co-inventors Paul W. Dent and Bjorn Ekelund. The dual-mode cellular radiotelephone is a simplified representation, the disclosure of which is hereby incorporated by reference.

Briefly, antenna 145, wireless transceiver 140, and receiving digital signal processor (DSP) 125 function as a means for receiving wireless telephone communication 150. The receiving DSP 125 processes the signal received from the wireless transceiver 140 via the DSP interface 135 and can be applied to the transmitting voice codec 115 via an acoustic transducer such as a loudspeaker 110. Generate a signal. Transmit DSP 120 receives from microphone 105 via voice codec 115 and provides the signal to DSP interface 135 for transmission by wireless transceiver 140 and antenna 145. The microcontroller 130 controls some or all of the elements of the mobile radio telephone 100. The design of the mobile radiotelephone 100 is well known to those skilled in the art and is not further described herein.

The invention is particularly well embodied in part as a stored program executing on a receiving DSP 125, which may be, for example, a C53 digital signal processor from Texas Instruments. However, the present invention can also be embodied in part also as a stored program executing on microcontroller 130 or other processor. Alternatively, custom logic design, or a combination of software and hardware may be used. In analog cordless telephone systems, analog devices can be used.

In FIG. 2, a block diagram of the receive DSP 125 of FIG. 1 configured in accordance with the present invention is now described. As shown in FIG. 2, the reception DSP 125 comprises communication signal generating means 210 for generating a digitally received wireless communication (voice) signal 250 from a radiotelephone communication received from the DSP interface 135. The communication signal 250 is applied to the voice codec 115 and converted into an analog signal, which is supplied to the loudspeaker 110 to generate an audible radiotelephone communication. The communication signal processing means 210 generates a sudden interruption at the receiver using techniques well known to those skilled in the art, including digital voice decoding and error correction functions. In such coded digital systems, an audible radiotelephone communication signal is generated when the received signal strength of the radiotelephone communication is greater than or equal to the first threshold, and an audible radiotelephone communication signal is suppressed when the received signal strength is less than or equal to the second threshold. Also in FIG. 2, the reception DSP 125 also comprises an alignment signal generating means 220. The alignment signal generating means 220 may receive an indication of the signal to noise ratio received from the DSP interface 135. As will be appreciated by those skilled in the art, the wireless transceiver 140 may generate a received signal strength indication signal. Alternatively, receive DSP 125 or microcontroller 130 may generate a received signal strength indication signal from the received wireless communication. The generation of the received signal strength signal is well known to those skilled in the art and need not be further explained. The alignment signal generating means 220 generates an alignment or warning signal 240 which is a function of the received signal strength of the radiotelephone communication signal.

The alignment signal 240 is injected into the audible wireless communication signal by combining the alignment signal 240 and the wireless communication signal 250 digitally received at the summer 230. Summer 230 generates the combined signal 260 provided to voice codec 115 to convert it to an analog signal and transmit it through loudspeaker 110. The wireless communication signal 250 and the alignment signal 240 need not be combined, but may be provided separately to one or more loudspeakers or earpieces 110 as long as the audible alignment signal is injected into the audible radiotelephone communication. Can be. In the embodiment of Figure 2, alignment signal generating means 220 and summer 260 form injection means for injecting an audible alignment signal, which is a function of the direction of orientation of the radiotelephone antenna, into audible radiotelephone communication. Sound conversion means such as a loudspeaker 110 and a voice codec 115 generates an audible signal combining the received radiotelephone communication signal 250 and the alignment signal 240 in response to the receiving digital processor 125, thereby audible. The signal strength indication is injected into the audible radiotelephone communication.

In FIG. 3, the operation of making the first embodiment of the alignment signal (block 220 in FIG. 2) is now described. In particular, at block 310, the signal is generated incrementally as a function of decreasing received signal strength. At block 320, a similar noise signal is generated and scaled or amplified by the signal generated at block 310. Thus, similar noise is generated and its amplitude increases as a function of decreasing the received signal strength, providing a similar indication of the gradual drop in signal strength. At block 330, the amplified similar noise is injected into an audible radiotelephone communication.

The quasi-noise signal may be white noise, paint noise, or any other type of broadband noise, or may be single or multiple frequency noises such as sinusoidal noise or multiple sinusoids that increase or decrease the amplitude with a decrease in the received signal strength. Can be. Preferably, an audible indication that increases with signal strength is selected to have a "pleasant" characteristic, such as the music's main chord, while an audible indication that increases with an aggravating signal is a "non-" such as white noise or discordant sound. Pleasant "property. In digital systems that provide a sudden threshold for interrupting communication, the quasi-noise signal is well audible above the threshold and becomes stronger as the received signal strength passes through and falls below the threshold, allowing the user to wirelessly Prompt to redirect the telephone antenna to restore communication.

In Fig. 4, the second embodiment 220 'of the alignment signal generating means 220 of Fig. 2 is now described. At block 410, the first signal is generated and incremented as a function of decreasing received signal strength, as described previously in connection with block 310. At block 420, the second signal is generated incrementally as a function of increasing transmit power.

In a mobile radiotelephone system using automatic transmit power control, the base station 155 (FIG. 1) or satellite increases and transmits its transmit power in response to an indication that the mobile radiotelephone 100 is received less than the desired signal strength. It is understood by one of ordinary skill in the art that the radiotelephone 100 reduces its transmit power in response to an indication that it is received greater than the desired signal strength. In accordance with the present invention, an indication of base station or satellite transmission power is provided in the downlink transmission of radiotelephone communication 150 received by the mobile telephone. Thus, at block 220, the second signal is generated and incremented as a function of increasing transmit power from the network. Audible indication is controlled by feedback from the network prompting the user to redirect his antenna to improve the up- or downlink.

Continuing with the description of FIG. 4, at block 430, the first and second signals are combined to generate a third signal that changes as a function of the first and second signals. For example, the third signal increases as a function of decreasing the received signal strength but also increases as a function of increasing transmit power. Thus, when the transmit power is increased, the alignment signal is increased to prompt the user to redirect the antenna so that the transmitter can generate low transmit power. At block 440, an alignment signal is generated. At block 440, the quasi-noise signal is a periodic signal, such as a sine wave or click, and its frequency is changed based on the value of the third signal. Therefore, the variable frequency pseudonoise signal provides a tuning indication in which, for example, higher frequencies indicate lower signal strength and higher transmit power. At block 450, similar noise is injected into the radiotelephone communication.

Accordingly, the present invention generates an audible alignment signal that is a function of the direction of orientation of the radiotelephone antenna (and also possibly the transmit power of the base station or satellite) indicating the alignment or misalignment of the receiving radiotelephone antenna for radiotelephone communication. The user is prompted to redirect the antenna so that the alignment signal is reduced. The present invention can be used in analog systems with a gentle degradation indicator before actual system noise enters, and a gentle degradation indication that can be used in digital systems using coding to indicate that the cutoff threshold is approaching or passing. Equipped. The user is prompted to redirect the antenna and to restore a high quality signal.

In Fig. 5, a second embodiment of the present invention is illustrated. 5 illustrates another partitioning of the block diagram of received signal processing at a radiotelephone or transmitter (ground base station or satellite). 5 is a function classification corresponding to FIG. 1, which is a hardware classification.

Signal plus noise and interference are received at antenna 145 and frequency transformed and digitized by radio transceiver 140 to obtain a signal representation suitable for digital signal processing. The receiving DSP 125 processes the converted and received signal to perform the demodulation and error-correction decoding function 500 to obtain digital symbols representing the coded speech. The coded voice is also decoded in the DSP 125 and converted to analog voice by the codec 115, the function of which is indicated by block 510 in FIG. 5. Block 500 also decodes the command messages and passes them to the control processor 130. Block 500 also generates a signal quality indication indicating the likelihood that the decoded bits passed to speech decoding will be error free.

Voice decoder 510 includes the ability to ignore unmarked bits and output a default voice sound, or otherwise to effect the error bits by a process known as "voice parameter interpolation". Remove Error elimination involves outputting "comfort noise" during the period of the signal that can be distrusted. The comfortable noise avoids abruptly shutting off all acoustic outputs that have the undesirable effect of "chopped" voice. In accordance with one embodiment of the present invention, demodulation and decoding function 500 may additionally output a signal indicative of wireless noise removed in the decoding process as currently described.

Demodulation and error correction decoding is advantageously performed by a maximum likelihood sequence estimator, published on September 17, 1996, and entitled "Channel-Independent Equalizer Device" by co-inventor Dent under US Patent No. 5,557,645 The disclosure of which is incorporated herein by reference. In FIG. 6, the Viterbi sequential maximum likelihood sequence estimator includes a state memory 65 that stores a number of hypotheses of received symbol sequences along with a path metric for each representing an accumulating likelihood. The processing includes a model of the delivery channel learned from processing a known bit sequence called a training sequence or sync word. The latter information is embodied in the reference vector arrays in the state memory 65.

Transmitter model 60 computes the expected signal value corresponding to the new bit hypothesis in hypothesis, in turn, for each state in which the previous hypothesis is true. The expected signal value is compared with the signal value received at the comparator 61 to obtain a difference. The difference is a measure of the error between the hypothesis and the actual received signal sample, and the error is due to radio noise only if the hypothesis is correct. The mismatch indication is added to the previous path distance corresponding to the hypothesis tested to obtain a new accumulated mismatch or path distance.

Adder 62 forms a new path distance from the state with the leftmost bit in the current hypothesis memory, which is binary '0', while adder 64 differs only at the leftmost bit position, which is binary '1'. To form a new path distance to the corresponding current hypothesis. Comparator 63 compares the two new path distances during the current hypothesis and with the left shift of the leftmost bit (going to 0 or 1 as the state sets the lower path distance) and into the already processed part of the memory. Select the lower and all corresponding contents of the associated state memory to become new contents of the state memory. All previous hypotheses are tested as both new and hypothetical bits and after all the hypotheses have been tested and left as both '0' and '1', and all path distances are updated to the lower of the two compared distances. Decoding advances one symbol.

The operation of FIG. 6 is described in more detail in the associated patent application. It is a description of how the operation may be modified to provide a tuning noise indication in accordance with one embodiment of the present invention.

As mentioned previously, comparator 61 calculates the difference between the hypothesized signal value and the actual received signal value, which is due to radio noise only when the hypothesized signal value is true. Instead of discarding the calculated difference, one embodiment of the present invention writes the difference along each data symbol in the already processed portion of the state memory. When the error correction coding generates several transmitted samples per original data bit transmitted, the transmitter model 60 generates several signal samples for comparison and the comparator 61 tests the plurality of samples to determine several differences. Get The difference is a sum of squares to obtain a mismatch indication before it is normally combined.

According to an embodiment of the present invention, the difference is stored in the state memory 65 for each processed bit decision. When one of the two compared hypotheses is selected to be obtained by Viterbi processing, the stored car from one state is allowed to overwrite the stored car of the other state. The final bit decision made by the Viterbi MLSE processor is to minimize ligature differences. Thus, the remaining error is attributed only to radio noise and not to inaccurate bit determination. Therefore, the obtained difference is equal to the received radio noise and can be output to the voice decoder 510. The voice coder 510 may add radio noise samples to the audio signal so that the user hears an accurate indication of the radio noise characteristics that change in proportion to the signal-to-noise ratio and is not "squeezed" by sudden thresholds in the decoding process.

Digital radiotelephones using the digitization of speech signals are associated with error detection codes as well as error correction coding. For example, cyclic redundancy check (CRC) codes are often appended to the most conceptually important bits in digital voice transmission. When the CRC check malfunctions, the error bit is prevented from causing unwanted acoustical results by various error cancellation methods, also known as " deburping ". Such debuffing can protect the voice quality available when the CRC malfunctions by 5% of the time. Detection of CRC malfunctions for more than 5% of the time can be used as a trigger to automatically add an audible signal quality indication to the phone output to allow the user to make corrective actions.

In the above-described embodiment, a noise indication arbitrarily close to the true radio noise can in principle be drawn from the demodulation and decoding process, and artificially reintroduced into the audio signal to truly increase or decrease the signal quality regardless of the critical characteristics of the demodulator. Will be displayed.

It would be desirable to provide an audible indication of signal quality that rises or falls in a method highlighted for true signal-to-noise ratio. For example, a 1 dB reduction in signal-to-noise ratio should be indicated to the user by a 3 dB or 6 dB rise in the similarly added audible indication. It is achieved by using the path distance obtained from the decoding process in addition to or alternatively to the obtained radio noise waveform. The path distance is proportional to the mean square of radio noise and can be used to scale the audible indication according to the square of the radio noise, or indeed some power of the radio noise level.

The scaled audible indication may be a prestored audio waveform if desired to reduce the complexity of the demodulation and decoding process. As mentioned previously, such waveforms are selected to be "unpleasant" sound when indicative of degrading signal quality. Conversely, when a "pleasant" waveform, such as a major music code, is scaled inversely, i.e. by dividing by a path distance, the density increases as the signal quality improves. The combination of an unpleasant sound increasing with the noise level and an increasing pleasant sound with the signal level can also be used, but at least the "pleasant" sound must be audible when the user is selected to enable the "audible tuning indicator". It can prevent it from causing confusion with other good signal to noise ratios during voice conversation.

Alternatively or additionally, the network may send a command message as previously described for controller 130 to remotely turn on or off an audible indication to realign the antenna. Such a command may be based on the signal strength measured by the mobile phone and generated by the network transmitted as a signal strength report to the network, or based on the signal strength measured by the network receiver receiving the transmission of the mobile phone, It can be a combination of the two.

It is also desirable to audibly display the signal quality to the user who is not currently talking, at which time the user's phone periodically receives a signal burst on the calling channel. To conserve battery power, mobile phones are not continuously received in ready mode but only wake up in so called sleep-mode slots that are pre-allocated by the network to each mobile unit. It can only happen, for example, at 1 second intervals. The network knows when the mobile receiver is aware and a call alert for that receiver is sent only at that time. Sampling the received signal only at one second intervals can hardly provide the user with a signal quality indication too slowly in the ready state that the user can optimize by moving the antenna position. If necessary, the user may request that the audible indication be activated by pressing a button, and when the phone is in ready mode the button may temporarily cause the receiver to operate continuously or at least frequently to align the antenna. The signal strength is measured for the purpose.

When not in conversation, there are no disadvantages in providing a "pleasing" kind of audible indication, such as musical hum, which increases density by improving signal quality. In the plant user manual, the instructions can be shortened to "alignment for maximum hum" which allows the user to follow easy instructions. Another "hum" may be provided depending on the identity of the network base station, for example, locked to "space hum" when the phone is locked to a land-based cellular system.

In the drawings and specification, typical preferred embodiments of the present invention are disclosed and certain terms are used, but they are for illustrative purposes only and not for the purpose of limitation, the scope of the invention is set forth in the following claims.

Claims (41)

In mobile cordless phones, A mobile radiotelephone antenna; Means for receiving wireless telephone communication via said mobile wireless telephone antenna; Means for converting the received radiotelephone communication into an audible radiotelephone communication in response to the receiving means; In response to the receiving means, an audible radio signal is generated that is a function of the orientation of the radiotelephone antenna to prompt the radiotelephone user to redirect the radiotelephone antenna for improved alignment to the received radiotelephone communication. A mobile radiotelephone comprising means for injecting by telephone communication. 2. The apparatus of claim 1, wherein the received radiotelephone communication has a received signal strength that is a function of the position of the radiotelephone antenna, and wherein the injection means injects an audible alignment signal that is a function of the received signal strength of the received radiotelephone. A mobile radiotelephone comprising a means. 3. The receiving apparatus according to claim 2, wherein the receiving means comprises a sudden interruption receiving means for suppressing the received radiotelephone communication when the received signal strength of the received radiotelephone communication is below a threshold, And said injecting means comprises means for injecting an audible alignment signal which is a function of the received signal strength of the radiotelephone communication signal to indicate that the received signal strength is reduced to a threshold. 4. A mobile radiotelephone as set forth in claim 3, wherein said abrupt blocker reception means comprises a digitally coded radiotelephone reception means. 2. A mobile radiotelephone as set forth in claim 1, wherein said injecting means comprises means for injecting a like noise into the audible radiotelephone communication which varies as a function of the direction of orientation of the radiotelephone antenna. 3. A method according to claim 2, wherein said injecting means comprises means for injecting similar noise into an audible radiotelephone communication, wherein the amplitude of the similar noise increases in response to a decreasing received signal strength of the radiotelephone communication signal. Mobile cordless phone. 3. The method of claim 2, wherein said injecting means comprises means for injecting periodic similar noise into an audible radiotelephone communication, wherein the periodicity of the periodic similar noise changes in response to a decreasing received signal strength of the radiotelephone communication signal. Mobile cordless phone featuring. 2. A method according to claim 1, wherein said injecting means injects an alignment signal which is also a function of the directing direction of the radiotelephone antenna and the transmit power of the received radiotelephone communication in response to the transmission power indication signal received by said receiving means. Mobile cordless phones. 2. The apparatus of claim 1, wherein said converting means comprises means for removing noise from a received wireless communication and estimating means for generating an estimate of noise removed from the received wireless communication; And means for generating an audio display signal that changes in response to the estimating function in response to the estimating means, and means for injecting the audio display signal into an audible radiotelephone communication. 10. A mobile radiotelephone as set forth in claim 9, wherein said estimating means comprises an error correction decoder comprising path distance means. 10. The mobile radiotelephone according to claim 9, wherein said estimating means comprises a Viterbi sequential maximum likelihood sequence estimator. The method according to claim 9, wherein the estimating means, Means for calculating an expected radiotelephone communication in response to said receiving means; Means for comparing the expected wireless telephone communication to the received wireless telephone communication to obtain a difference between the expected wireless telephone communication and the received wireless telephone communication in response to the calculating means; And means for generating an error signal based on the difference obtained in response to the comparing means. 2. The method of claim 1, wherein the received radiotelephone communication comprises a cyclic redundancy check (CRC), and wherein the injection means comprises means for injecting an audible alignment signal that is a function of a malfunction of the CRC in the received radiotelephone communication. Mobile cordless phone featuring. The audible device as recited in claim 1, wherein said injecting means is a function of injecting an audibly pleasant alignment signal which is a function of increasing received signal strength of the received radiotelephone communication and reducing the received signal strength of the received radiotelephone communication. And a means for injecting an unpleasant signal. The method of claim 1, wherein the conversion means, Means for removing noise from the received wireless telephone communication; Error detecting means in response to the removing means for detecting that the removing means cannot remove noise from the received radiotelephone communication; In response to the error detecting means, means for eliminating the effect of noise that has not been removed in the received radiotelephone communication; And the injection means is responsive to the error detection means. A base station communicating with a mobile radiotelephone in a mobile radio communication system, Variable power transmission means for transmitting the mobile communication to the mobile radio telephone at a power level that varies in accordance with the position function of the mobile radio telephone relative to the base station; Means for causing said variable power transmission means to transmit a transmission power level indication of wireless communication to a mobile radiotelephone. The base station according to claim 16, wherein the base station is a terrestrial base station or a satellite base station. In mobile cordless phones, Means for receiving a radiotelephone communication; Signal strength indicating means for generating, in response to the receiving means, a signal strength indication which is a function of the signal strength of the received radiotelephone communication; And in response to said receiving means and said signal strength indicating means, an acoustic conversion means for generating an audible signal combining the received radiotelephone communication and the signal strength indication such that an audible signal strength indication is provided with an audible radiotelephone communication. Mobile radio telephone, characterized in that. 19. The abrupt blockage of claim 18, wherein the receiving means generates an audible radiotelephone communication signal when the received signal strength of the received radiotelephone communication is above the threshold and suppresses the audible radiotelephone communication signal when the received signal strength is below the threshold. A receiving means; And said signal strength indicating means comprises means for generating a signal strength indication which is a function of the received signal strength of the radiotelephone communication signal to indicate that the received signal strength approaches a threshold. 20. A mobile radiotelephone as set forth in claim 19, wherein said abrupt blocker reception means comprises a digitally coded radiotelephone reception means. 20. The device of claim 19, wherein the signal strength indicating means has means for generating similar noise to indicate that the received signal strength decreases toward a threshold, wherein the amplitude of the pseudo noise is determined by the received signal strength of the radiotelephone communication signal. A mobile radiotelephone, characterized in that it increases with a function of decreasing. 22. The apparatus according to claim 21, wherein the signal strength indicating means has means for generating similar noise to indicate that the received signal strength decreases above a threshold, and wherein from the received signal strength the amplitude of the pseudo noise is above the threshold. A mobile radiotelephone, characterized by an increase in function of decreasing the received signal strength of a radiotelephone communication signal up to a received signal strength that is below a threshold. 20. The apparatus of claim 19, wherein the signal strength indicating means comprises means for generating periodic similar noise to indicate that the received signal strength decreases toward a threshold, wherein the periodicity of the periodic similar noise is determined by the received signal of the radiotelephone communication signal. A mobile radiotelephone comprising a change in signal strength as a function of change. 24. The received signal strength of claim 23, wherein the signal strength indicating means has means for generating periodic similar noise to indicate that the received signal strength is reduced above a threshold, wherein the periodicity of the periodic similar noise is above the threshold. And from the received signal strength of the radiotelephone communication signal to a received signal strength that is less than or equal to the threshold, depending on the variation function. 19. A signal strength indication according to claim 18, wherein said signal strength indicating means is a function of a signal strength of a received radiotelephone communication and a transmission power of a received radiotelephone communication further in response to a transmission power indicating signal received by said receiving means. Mobile radio telephone, characterized in that to generate. 19. The apparatus of claim 18, wherein the signal strength display means is Means for removing noise from the received wireless communication; Estimating means for generating an estimate of noise removed from the received wireless communication, And the signal strength indication is an estimator function. 27. A mobile radiotelephone as claimed in claim 26, wherein said estimating means comprises an error correction decoder comprising path distance means. 27. A mobile radiotelephone as claimed in claim 26, wherein said estimating means comprises a Viterbi sequential maximum likelihood sequence estimator. 27. The apparatus of claim 26, wherein the estimating means is Means for calculating an expected radiotelephone communication in response to said receiving means; Means for comparing the expected wireless telephone communication to the received wireless telephone communication to obtain a difference between the expected wireless telephone communication and the received wireless telephone communication in response to the calculating means; And means for generating an error signal based on the difference obtained in response to the comparing means. 19. The apparatus of claim 18, wherein the received radiotelephone communication comprises a cyclic redundancy check (CRC), and wherein the signal strength indicating means is provided with means for generating a signal strength indication which is a function of a malfunction of the CRC in the received radiotelephone communication. Mobile radio telephone, characterized in that. 19. The apparatus of claim 18, wherein said signal strength indicating means generates an audibly pleasant alignment signal that is a function of increasing received signal strength of a received radiotelephone communication, and is a function of decreasing received signal strength of the received radiotelephone communication. And means for generating an audibly unpleasant signal. The signal strength display means according to claim 18, Means for removing noise from the received wireless telephone communication; Error detecting means in response to the removing means for detecting that the removing means cannot remove noise from the received radiotelephone communication; And in response to the error detecting means, an error eliminating means for eliminating the effect of noise that has not been eliminated in the received radiotelephone communication. An antenna alignment display method for a mobile radiotelephone that receives radiotelephone communication via a radiotelephone antenna and converts the received radiotelephone communication into an audible communication signal. Injecting into the audible radiotelephone communication an audible alignment signal which is a function of the orientation of the radiotelephone antenna to prompt the radiotelephone user to redirect the radiotelephone antenna for improved alignment to the received radiotelephone communication. Antenna alignment display method for a mobile radio telephone. 34. The method of claim 33, wherein the received radiotelephone communication has a received signal strength that is a function of the position of the radiotelephone antenna, wherein the injection method comprises: Injecting an audible sequence signal into the audible radiotelephone communication as a function of the received signal strength of the received radiotelephone communication. 35. The method of claim 34, wherein the injecting step comprises injecting similar noise, which changes as a function of the direction of orientation of the radiotelephone antenna, into an audible radiotelephone communication. 35. The method of claim 34, wherein the injecting step comprises injecting similar noise into an audible radiotelephone communication, wherein the amplitude of the similar noise increases in response to a decreasing received signal strength of the radiotelephone communication signal. How to display antenna alignment for mobile radio phones. 35. The apparatus of claim 34, wherein the injecting means comprises means for injecting periodic similar noise into an audible radiotelephone communication, wherein the periodicity of the periodic similar noise changes in response to a decreasing received signal strength of the radiotelephone communication signal. An antenna alignment display method for a mobile radio telephone. 34. The method of claim 33 wherein the mobile radiotelephone also receives a transmit power indication signal and wherein the injecting step comprises: Injecting an alignment signal, which is a function of the directing direction of the radiotelephone antenna and the transmit power of the received radiotelephone communication, into the audible radiotelephone communication. 34. The apparatus of claim 33, wherein the mobile radiotelephone comprises means for removing noise from a received wireless communication and estimating means for generating an estimate of noise removed from the received wireless communication; And the injecting step includes generating an audio display signal that changes in accordance with an estimator function and injecting the audible display signal into an audible radiotelephone communication. 34. The mobile radio of claim 33, wherein the received radiotelephone communication comprises a CRC, and wherein the injecting step comprises injecting an audible alignment signal that is a function of a malfunction of the CRC in the received radiotelephone communication. How to mark antenna alignment for a phone. The method of claim 37, wherein the injecting step, Injecting an audibly pleasant alignment signal that is an increasing received signal strength of a received wireless telephone communication; Injecting an audibly unpleasant signal which is a function of the reduced received signal strength of the received radiotelephone communication.