TW424364B - Digital cordless telephone with forward error correction method and appartus - Google Patents

Abstract

A digital cordless telephone including automatically selectable forward error correction as necessary to improve reliability of the communication channel between a remote digital handset and its base unit. In addition to a selectable forward error correction encoder, a co-selectable high compression ratio encoder provides increased bandwidth within the communication channel. In this way, the bandwidth of the communication channel between the remote digital handset and its base unit is not increased for the added forward error correction information. In another embodiment a plurality of encoding paths containing respective compression ratios and corresponding forward error correction techniques are selectable to provide a balance between increased compression of the digital signal transmitted between the remote digital handset and its base unit, and overall reliability of the digital communication channel.

Description

4243 64 A7 B7 V. Description of the invention (1) 1. Scope of the invention The present invention relates to digital radiotelephone f, especially to a digital radiotelephone, which implements error correction and additional data compression if necessary to improve remote digital mobile phones. Communication quality with its base station. Printed by the Central Standards Bureau of the Ministry of Economic Affairs, Shellfish Consumer Cooperatives 2. Background to the Art of Knowing Remote-controlled phones are popular consumer devices. Users leave their base stations hundreds of feet away. 0 Initially, analog signals were used to talk to their base units. It has been improved to allow remote control of mobile phones. Wireless telephones can enter digital communication due to increased noise rejection and higher range. When the distance between base units increases, the interference channel is abnormal, which can cause the remote control phone to deteriorate. Figure 3 shows the characteristics of a digital radiotelephone. In Figure 3, the digital radio processor (digital signal processor (DSP) processor) 5 5 0 transmitter piggyback processing machine baseband processor 6 0 0. . It can make home, wireless phones in recent years, and its base unit provides a better range. But Dangyao is still the traditional digital remote controller of its base unit.

The digital sound quality is used between 0 0 and a remote control mobile phone in the receiving or office. The remote control mobile phone includes one or micro-control i —.,. Nr— Gutter (please read the precautions on the back before filling this page) In the transmitting side, the microphone 5 9 0 outputs an analog U · .- _. To a digital converter (A / D) 580 which inputs the microphone number The signal is sent to the analog input signal transmitter baseband into a number_Qike wind signal. Digital microphone signal \ \ .'_ If the processor is 5 0 0, the code will be converted into a compressed digital signal. Compressed digital signal radio frequency (RF) transmitter 570 and an antenna transmitted to a mutual paper size Applicable to China National Standards (CNS) A4 specifications (210X297 mm) _4 2 4 3 ..: ,, A7 _B7_. _ V. Description of the invention (2) Replenish base unit. Figure 4 shows the details of the transmitter baseband processor 500, which includes a coder 300.参考 Referring again to FIG. 3, in the receiving direction, the antenna and RF receiver 572 receive digital signals from the complementary base unit 1 :: ^ F receiver 5 7 2 transmits the digital signals to the receiver baseband processor 600 for decoding. After decoding, the digital signal is input to a digital-to-analog (A) converter 582, which converts the digital signal into an analog signal for output by the audio device. Figure 5 shows a detailed receiver baseband processor 600, which includes a decoder 400. The special encoding and decoding technology used by the coders 300 and 400 is typical of long-distance quality. For example, .8-bit linear pulse code modulation (P CM), u-law, A-law, or adaptive differential pulse code modulation (AD PCM) are typically used. The circuit included in the base unit can be complementary to the circuits contained in the remote digital phone, that is, a complementary transmitter baseband processor and a receiver baseband processor. In the remote-controlled digital mobile phone and / or its base unit, the transmitter and receiver baseband processor parts can be included in the same processor, that is, the same DS. Although digital wireless phones operate well within a certain distance, the environment in which digital wireless phones operate is easily affected by interference from other sources or channels, resulting in poor call quality. Among the communication channels between a mobile phone and its base unit, the technique commonly used to overcome interference is to reserve or make available many communication channels, each channel having a different frequency. Increasing the number of communication channels increases the possibility of finding at least one communication channel without sufficient interference for use during a call. However, channels are usually subject to government regulations. For example, in the United States between 9 0 2 and 9 2 8 MHz, the increased frequency bandwidth of the channels. The paper size is applicable to the Chinese National Kneading Soap (CNS) A4 specification (2 丨 0X297 mm). -5---------- Installation -----: 1 order --- ^-Γ —line * · '{Please read the precautions on the back before filling this page) 4 243 (/ A7 B7__ V. Description of the invention (3) Generally increase the possibility of capturing noise and / or interference. Typically, the use of remote control digital mobile phones 戸 choose a communication channel based on their own interpretation of the sound quality between the remote digital mobile phone and the base unit. For use. Therefore, the RF transmitter 570 and RF receiver 572 in FIG. 3 typically include a capability to transmit on any number of communication channels of choice. This capability is very useful and can avoid the inclusion of Interference or other abnormal channels. However, the choice is entirely determined by the user based on empirical information, that is, the sound or performance of the selected communication channel. Some cell phone systems (G SM) use forward error correction to improve the quality of digital communications ... but this and others. Error correction techniques, despite Used in many communication systems to improve quality, but not used in wireless phones due to higher cost, higher power, and the need to increase the bandwidth to use the transmitted sound and error correction information to provide long-distance quality calls In a fixed communication channel, there is a need to improve the quality between a remote-controlled digital mobile phone and a base unit, especially in an environment that includes interference without increasing noise and interference. Introduction to the invention · | According to the principles of the invention, one The transmitter baseband processor includes a first coder having a first compression ratio. It also includes a second coder having a first compression ratio, which is greater than the first compression ratio, and an error correction coder to provide error correction. Information and data transmitted through 1¾¾ coders. A receiver baseband processor_ includes a first decoder with a first decompression ratio and a first paper size with a second decompression ratio greater than the first reduction ratio. Applicable to China National Standards (CNS) Α4 Specification (2 丨 〇 × 297mm) ~~~ --------- Installation -----:-Order --- i Line · (Please read the back of the first Note the refill (Write this page) Consumption cooperation between employees of the Central Bureau of Standards of the Ministry of Economic Affairs and the Ministry of Economic Affairs of the Central Government Bureau of the Ministry of Economic Affairs Correct the decoder to decode the error correction information included in the data transmitted by the second decoder. According to the principle of the present invention, it is also provided between the remote control mobile phone and the base unit of the digital radio telephone to encode the data to Method for transmission. In this method, one of many coding paths is selected to provide compressed data to the RF transmitter. Each coding path includes a separate coder, which has a different compression ratio. Data is transmitted from the selected coding path to the RF transmitter. Between the remote control mobile phone of the digital radio and the base unit, a supplementary receiving method of decoded data is selected from many decoding paths to provide decompressed data to a digital-to-analog converter. In this method, each decoding path includes decoders with different decompression ratios. The data is transmitted from a selected decoding path to a digital-to-analog converter. Brief description of the drawings-The characteristics and advantages of the present invention will be more obvious to those skilled in the art after referring to the following descriptions and drawings, where: Figure 1 shows the digital wireless according to the principles of the present invention Transmitter baseband processor for the phone. Figure 2 shows a receiver baseband processor for a digital radiotelephone according to the principles of the present invention. Figure 3 shows the relevant characteristics of a traditional digital remote control mobile phone for a digital radiotelephone. FIG. 4 shows the related characteristics of the baseband processor of the conventional transmitter in the conventional digital remote control mobile phone in FIG. 3. --------- Installation ----- ^ 1 order, --- line (please read the precautions on the back before filling this page) This paper size applies to China National Standard (CNS) A4 specification (210X297 (Mm) -7 · ^ 2: 43 6 ^ Consumption cooperation among employees of the Central Bureau of Standards, Ministry of Economic Affairs, Du Yince A7 B7 V. Description of the invention (5) Figure 5 shows the traditional digital remote-controlled mobile phone in the digital radiotelephone in Figure 3. Related characteristics of traditional receiver baseband processors. Main component comparison table 1 0 0: transmitter baseband processor, 102, 104, 106, 202, 204, 206, 2008: actuation line, 1 1 0: high compression ratio adder, 120: forward error correction Coder, 1 3 0: Multiplexer, 1 40: Communication quality analysis, 3 0 0: Coder, 210: High compression ratio decoder, 200: Receiver baseband processor,-240: Forward error correction detection Detector, 220: forward error correction decoder, 400: decoder, 500: transmitter baseband processor, 600: receiver baseband processor, 570: RF transmitter, 572: RF receiver, 590 : Microphone, 580: A / D converter, 5 9 2: Amplifier, (Please read the notes on the back before filling out this page) This paper size applies to China National Standard (CNS) A4 (210X297 mm) -8- Printed by the staff of the Central Standards Bureau of the Ministry of Economic Affairs 4 2 4 d A7 B7 V. Description of the invention (6) 582: D / A converter, 560: Receiver baseband processor, < 570: RF transmitter, 50: processing , 2 3 0: Multiplexer. The illustrative embodiment describes in detail that the present invention can overcome the shortcomings of the conventional art, namely, to provide selective use of forward error correction in radiotelephones, and to encode with a higher compression ratio and long-distance quality, so it can provide reliable digital communication without increasing Noise and interference. It improves the effective range and sound quality of digital radiotelephones. The present invention is particularly useful for digital radiotelephones that are used in the United States in the frequency bands between 902 and 928 million hertz (MHz), although the present invention also relates to digital radiotelephones that are used at any frequency in any country. -There is a framework in which the structure and coding method between the digital radiotelephone and its base unit can be optionally and quickly changed if necessary based on the intelligent monitoring of the characteristics of the currently used communication channel. Digital error correction. When the channel is degraded due to interference or other factors, it can be selected and implemented in the channel between the remote control digital mobile phone and its base unit. Therefore, a balance should be struck between the lowest compression ratio encoding technology and the reliability of communication channels that are experiencing degradation. Figure ri shows the transmitter baseband processor 100 used in the digital radiotelephone of the present invention. The components in Figure 1 are the conventional arts shown in Figure 4: The size of the original paper is applicable to the Chinese National Standard (CNS) A4 (210X297 mm) I --------- pack- -----— Order · --- τ 1.1 Line- (Please read the notes on the back before filling out this page) 4 2 43 6 4 A7 B7 V. Description of the invention (7) 1 0 0 including a traditional plus at least One other coded path In Figure 1, the transmitter baseband processor: code path, represented by the coder 3 0 0 (please read the precautions on the back before filling in this page) path, with an increased compression ratio and forward error correction The coder is represented by a compression ratio coder 100 and a forward error correction coder 1 2 0. The output of one of the two code paths is selected by a multiplexer (MUX) 1 3 0 for output to a conventional RF transmitter. The coder 3 0 0 uses traditional coding technology to provide long-distance quality voice, and 32 kilobits (Kb / s) ADPCM per ′. This standard has been a digital wireless telephone product, a widely accepted long-distance quality standard. The high compression ratio encoding machine 1 1 0 is profitable. The encoding technology with a higher compression ratio than the encoding device 3 0 0 is used. The same or completely different language coding technology can be used in the compression ratio coder 1 10 and the lower compression ratio coder 1 3 0 to maintain the same frequency bandwidth. For example, the high compression ratio coder 110 can implement 16Kb / sADPCM or 8Kb / sCELP. Printed by the Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs, the high compression ratio coder 110 can also utilize a 16 Kb / _. S low complexity and low latency coding technology. The difference between the encoding of the high compression ratio adder 1 10 and the adder 3 0 0 enables long-distance quality language in both cases. However, in the high-compression / better-coded path, there can be increased data processing without having to expand the original frequency bandwidth. When a channel is widened, the number of channels that can be implemented can be reduced, and there is a tendency to increase the amount of noise and interference introduced into the channel 'and the amount of power consumed by the device. Therefore, according to the principles of the present invention, a sufficient number of forward error corrections can be supported (or despite excessive transmission of transmitted data signals) without increasing the channel bandwidth. The preset coder 3 0 0 and the high compression ratio coder ii 〇 The special paper wave scale used is applicable to the Chinese National Standard (CNS) A4 specification (210X297 meals)-1_ printed by employee consumption cooperation of the Central Standards Bureau of the Ministry of Economic Affairs 4 243 64 A7 B7 _ ._ 5. Description of the invention (8) The coding technology is well known. However, the present invention utilizes at least two coding paths, each using a coding technique with a different data output rate to provide the availability of the original frequency bandwidth portion used by the forward error correction technique, although it may suffer the cost of low voice quality. Preferably, although the sound quality may be sacrificed when the compression ratio is increased beyond a certain point, the forward error correction coder 1 2 0 provides a high degree of reliability in digital communication in the path of higher compression ratio coding, which can be better than Any quality loss caused by higher compression ratios. The data stream output to RF transmitter 570 is selected by MUX1 30. M U X 1 3 0 is controlled by the communication quality analysis module 14 0. This module analyzes the channels used and selects the most efficient coded path that can provide proper communication. The different characteristics of the communication channel between the base station of the digital remote control mobile phone need to be monitored and decided so that the communication quality analysis module 140 selects the possible encoding path in the transmitter (and receiving base) baseband processor part. . For example, parameters such as received signal strength indicator (RSSI) _-and / or frame error rate (FER) should be monitored to determine whether error correction is beneficial. Especially when there is a weak signal strength (* low RSSI) indication and high frame error Rate, it means to switch to the coding path including forward error correction coder 120 and high compression ratio coder 1 10. Therefore, when the RSS I signal falls below the set threshold fe 値 and / or the FER rises above another set threshold, the communication quality analysis module 1 40 should switch to a coded path including forward error correction to Improved reliability between remote digital phones and base units. J, --------- install ------ I order '--- Γ1,1—line · *' (Please read the precautions on the back before filling this page) This paper size applies China Family Standard (CNS) Α4 size (210 X 297 mm) -11- Printed by the Shell Consumer Cooperative of the Central Elevator Bureau of the Ministry of Economic Affairs 4 2 4 3 ^ Α7 Β7 5. Description of the invention (9) Best, RSS Both I and FER are used in a decision to switch to a coding path that includes forward error correction (ΓΕ C). For example, if FER is higher than its set threshold and RSSI is lower than another set threshold, it is best to change the channel without switching to a coding path that includes forward error correction. This switchover is best achieved using information from both RSSI and FER. It is also possible to make decisions based on RSSI or FER only. However, in this case, it is better to use F E R than R S .S I. For example, although R S S I is low, if F E R does not indicate an error or indicates a small amount of error, it is not necessary to switch to a coding path that includes forward error correction. In order to complete the change of the encoding path, the communication quality analysis module 1 4 0 activates the actuation lines 1 0 4 and 106 to the high compression ratio coder 1 1 0 and the forward error correction coder 1 2 0 and controls the MUX. 1 3 0 to select the output signal 'b'. If the RSSI signal drops below its set threshold 値 and FER increases above its set threshold 値, the communication quality analysis module starts the actuation line 1 2 to select absent or lower compression ratio coder 3 0 0, and appropriate The MUX 130 is controlled to select the first coded path 'a'. In order to save power, especially in the case of remotely controlled digital mobile phones, the absent mode of the digital radio telephone may be a coded path including a coder 3 0 0. If this coding path is selected, the communication quality analysis module 1 4 0 stops energizing to the actuation line 1 6 of the forward error correction coder 1 2 0 and the actuation line 1 to energize to the high compression ratio coder 1 1 0 0 6. For best efficiency, especially for remote digital phones, the unused coding path is not needed. It is best to stop the excitation to reduce power requirements and improve the battery life of remote digital phones. According to this, as long as the channel selected or specified is sufficient to avoid interference, higher compression J -----.---- installation ----- I order, --- ni.t 丨 line- * ( Please read the notes on the back ^ before filling out this page) This paper size is applicable to China National Standard (CNS) 8-4 specifications (210 · 乂 29? Mm)-12-

Printed by the Consumers' Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs T A7 B7 V. Description of the invention (10) The path with higher code (that is, the high compression ratio coder 1 1 0 and forward error correction coder 120) can be stopped to enable power killing The demand is minimal. Both the remote-controlled digital mobile phone and its base unit can make the initial decision as to whether it is beneficial to include forward error correction. Therefore, switching to the encoding path including the forward error correction coder 120 and the high compression ratio coder 110 can be determined accordingly. Once switched to the coded path including forward error correction, the coded path is available for the remaining phone calls. Therefore, the digital radiotelephone can use the lower compression ratio coder 300 to return to the absent state automatically while waiting for a decision whether to include forward error correction during the next call. Or | The last coded path can be reserved for future phone calls until the monitored channel characteristics indicate that it should be changed. "When one of the mobile phones or base units decides to change the coded path, a control message is sent to the new path, and Switch to the new coding path, that is, the operation including the forward error correction coder 1 10 has started. -'Multiple levels of selection can also be made between the individual coding paths, each including a higher compression ratio coder with increments and corresponding higher power forward error correction technology. Therefore, despite the lower bit r ratio, a high compression ratio coder with more powerful error correction codes can be selected as a communication channel if needed. However, as a general rule of thumb, when the sound compression ratio increases, the sound quality starts to degrade in any encoding technology. Therefore, there is a compromise. For the known frequency bandwidth, a number of sound compressions are performed in the high compression ratio coder 110 to obtain more coding gain. Therefore, for any amount of frequency bandwidth, when the quality of the remote control digital mobile phone and the communication channel between its base unit is degraded, the capital paper size applies the Chinese national standard (CNS > A4 specification (210X297 mm) -13-J. Installation ------ Order --- Π11.1 line-(Please read the precautions on the back before filling out this page) 424364 A7. B7 V. Description of the invention (11) The compression ratio of the material can be increased to Provides most of the frequency bandwidth for the corresponding selection of the error correction coder 1 2 0 before it is more powerful. A hysteresis can be implemented in the communication quality analysis module 1 4 0 to prevent the characteristics of the communication channel from being in several When the threshold is set to float, the code path can be switched quickly. Therefore, in addition to monitoring the characteristics of the communication channel to compare with specific thresholds, you can require the monitored characteristics to exceed a predetermined threshold for a predetermined time and implement hysteresis. For example The hysteresis period can be established and timed. After that, if the error correction syndrome bit and / or cyclic redundancy check (CRC) is checked and pointed out, error correction is no longer needed. In the digital remote control mobile phone or its base unit The processor, upon request, switches back to the coding path without forward error correction, that is, the path including the lower compression ratio coder 300. After receiving the reception signal from the other party, it is allowed to switch between the coding paths. Hysteresis can also be implemented after the establishment of two predetermined thresholds. The communication quality analysis module 1 4 0 can also control: _ industrial and other activation signals for the receiver baseband processor in Figure 2 ^^ 2 0 0 Application: Figure 2 shows the baseband processor of this chip receiver _ 2 0 0. Here it is; the staff of the Central Standards Bureau of the Ministry of Economic Affairs cooperate with the printer baseband processor _ 2 0 0 to send the baseband in Figure 1. Addition of processor fe ::, ι ο 〇. Tffii · Add to a decoder 1 0 0 (read the precautions on the back before filling this page) ^ In Figure 2, the signal received from the RF receiver 4 0 0, which decodes the plus code made by the transmitter baseband processor decoder 3 0 of FIG. 1. Receive the F signal. It is also input to a higher decompression ratio decoding path, represented by the high compression ratio decoder 2 1 0 and the forward error correction decoder 2 2 0. High compression ratio decoder 2 1 0 and forward error correction decoding in receiver baseband processor part 2 0 This paper size applies Chinese National Standard (CNS) A4 specification (210X297 mm) · 14-A7 _ B7 V. Description of the Invention (12) The device 2 0 is a supplement to the high decompression ratio coder 1 10 and the forward error correction coder 120 of FIG. 1. · ’-In absent mode, the receiver baseband processor is miscellaneous = # 2 0 0 decodes the RF signal received by the decoder 4 0, where Satoshi X 2 3 0 is transmitted to a D / A converter. In order to improve the quality of the communication channel between the remote control digital mobile phone and its base unit, the receiver baseband processor can enter a high compression mode, in which the received RF signal is higher than the compression ratio provided by the decoder 400. The compression ratio is coded, and the forward error correction decoder will receive any forward error correction; decoding. Of course, the high compression ratio mode assumes that a transmitter baseband processor 1. 〇 existing in the base unit of the Ming, that is, the transmitter baseband processor shown in Figure 1 _ Qiaoyou 0 implemented in the same or different processors 1 If connected to the baseband

Processor m 2 0 0 —like. Therefore, the choice between a lower decompression ratio decoding path and a decoder with a high decompression ratio ΓΓ 0 can be performed in any number of ways. example

And the higher decompression of the forward error correction decoder 2 2 0, for example, in an embodiment, the transmitter baseband processor 1 0 0 (Figure ------------ install --- -^ 1 Order --- ^ — 1-line-(Please read the precautions on the back before filling out this page) Printed by the Staff Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs

in! The signal quality analysis module 1 4 0 can also control: the selection of the decoding path in the receiver baseband processor _ 2 0. In this embodiment, when the high decompression lake I ratio mode enters the transmitter baseband processor part 100, the high decompression ratio decoder 2 10 and the forward error correction decoder 2 2 0 can also be changed. Actuate. In the high decompression mode, the MUX230 is controlled to transmit the signal 'b', otherwise '. Transmitter baseband processor gif UX2 3 0 The operation of transmitting the absent signal 'a 1 0 0 may be received by the receiver; therefore, 1 sr.of? Μ This paper size applies the Chinese National Standard (CNS) Α4 specification (210X297 mm) 15 4243 64 A7 B7 V. Description of the invention _ Baseband processor system.

The corresponding operation of MUX2 3 0 in 2 0 is controlled. In another embodiment of the present invention, the communication quality analysis module 1 4 0 can detect a manual selection performed by a digital wireless telephone user to select forward error correction. mode. The human PS selection can be input by a keypad to a base unit including a receiver and / or a transmitter baseband processor.

In the processor of II, it is printed on the digital remote control mobile phone or the central government bureau of the Ministry of Economic Affairs and Consumer Cooperatives. In order to save power, when the receiver baseband processor is in the high decompression ratio mode, the decoder 400 can stop the excitation. . The bandwidth of this device cannot be extended or limited when switching to data path expansion including forward error correction. In addition, in another embodiment of the present invention, in the receiver baseband processor part 2000, the selection of the high decompression ratio mode may be started before the error correction detector module 240 in FIG. 2. In this embodiment, the input-RF signal is monitored for detection including forward error correction information. _If forward error correction information appears in the input RF signal, the receiver baseband processor is automatically placed in a high decompression ratio mode. Otherwise, the receiver baseband is 200, and the decoding path including the decoder 400 is placed in its default decoding mode. Although the ability to select a channel among many communication channels is not unique, the present invention provides a capability that can reduce It even eliminates the need to 'provide a digital wireless telephone with the ability to access more than one communication channel' to avoid interference instead of dealing with interference. However, the present invention can add more traditional channel selection plans to provide a more robust and superior digital wireless telephone system. (Please read the precautions on the back before filling this page) This paper size is applicable to the Chinese National Standard (CNS) A4 specification (210X297 mm) -16-424364 A7 B7__. _ V. Description of the invention (14) Forward error correction is implemented in the software, which already exists in traditional digital radiotelephones, and the increased cost pressure related to the error correction function can be minimized. In addition, processors (such as digital signal processors, microprocessors, or microcontrollers) can operate at millions of instruction rates per second (MIPS) to reduce the power consumption of the equipment. Therefore, saving power in a battery-powered device can reduce the processor's M I P S rate. According to the principles of the present invention, when a radiotelephone implements forward error correction, it can enjoy a range of increased transmission power and / or transmission frequency bandwidth. In addition, the present invention enables a digital radiotelephone to be compared with a digital radiotelephone without the present invention in the same range and enjoys the ability to avoid interference. The present invention has been described with exemplary preferred embodiments, and those skilled in the art will be able to make various modifications to the embodiments of the present invention without departing from the spirit and scope of the present invention.丄 --------- ^ ------ Order (Please read the notes on the back before filling out this page) Printed by the Central Samples Bureau of the Ministry of Economy Kneading standard (CNS) Α4 size (210X297 mm) 17-

Claims (1)

A8B8C8D8 4243 64 VI. Patent application scope 1. A transmitter baseband processor | contains: a first coder having a first compression ratio; a second coder having a second compression ratio greater than the first compression ratio; and an error The correction coder is used to provide error correction information and data transmitted through the second coder. 2. If the transmitter baseband processor of item 1 of the patent application scope contains: ··· A communication quality analysis module is suitable for selecting between the first coder and the second coder. 3. The transmitter baseband processor according to item 2 of the patent application scope, wherein: the communication quality analysis module is selected according to the characteristics of the received RF signal. 4. The transmitter baseband processor according to item 2 of the patent application scope, wherein: the communication quality analysis module is selected according to a frame error rate. 5. If the transmitter baseband processor of item 4 of the patent scope is applied, (please read the precautions on the back before filling this page) The number of the selection number printed in the printing of the employee consumer cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs indicates the arrival of the strong number The receipt analysis model analyzes the quality of the qualitative product. The information in the device is rm 1 and the letter band F base R machine is sent to the receipt. Please apply for goods such as letter. 6 This Choice ... Selected News-18- This paper size applies the national standard (CNS) A4 specification (210 X 297 mm) 4 6 3 4 2 4 A8B8C8D8 Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs Patent application scope 7. The transmitter baseband processor according to item 2 of the patent application scope, wherein: the communication quality analysis module is selected according to the characteristics of the transmitter baseband processor and the communication channel between a base unit. 8. The transmitter baseband processor according to item 1 of the patent application scope, wherein: the transmitter baseband processor is adapted and arranged to accept user input to guide selection between one of the first and second coders. 9 _ A receiver baseband processor, comprising: a first decoder having a first decompression ratio: a second decoder having a second decompression ratio greater than the first decompression ratio: and: an error correction decoder will The error correction information contained in the data transmitted through the second decoder is decoded. 10. The receiver baseband processor according to item 9 of the patent application scope, including: an error correction detector to select between the first decoder and the second decoder. 1 1. The baseband processor of the receiver as claimed in item 10 of the scope of patent application, wherein: the forward error correction detector is selected according to the content of the received RF signal. 3 1 2. Receiver baseband processor, of which: This paper size applies to China National Standard (CNS) A4 specification (210 X 297 mm) ---------------- ---- Order- -------- Line I (Please read the precautions on the back before filling this page) -19- Consumption Cooperation of Employees of Intellectual Property Bureau of the Ministry of Economic Affairs Du printed A3 B8 C8 D8 The detector selects 3 1 3 according to the information contained in the received RF signal. For example, the receiver baseband processor of item 12 of the patent application scope, wherein: The information contained in the received RF signal is a forward error correction presence. 14. The receiver baseband processor according to item 9 of the patent application scope, wherein: " The receiver baseband processor is adapted and arranged to accept user input to guide the selection between the first decoder and the second decoder. . 15. If the receiver baseband and processor of item 10 of the patent application range, where: ^ The error correction detector is selected based on the received signal strength indication and frame error rate. 16. A baseband processor for a digital radiotelephone, the baseband processor includes: a transmitter baseband processor, including: a first coder having a first compression ratio, and a second coder having a greater compression ratio than the first A second compression ratio, and an error correction coder to provide error correction information and data transmitted through the second coder; and a receiver baseband processor, including: a first decoder having a first decompression ratio, and a second decoding The device has a first decompression ratio that is larger than the first decompression ratio, and ^ paper size is applicable _ national standard < CNS) A4 specification (210 X 297 mm) -20- -------- ---- Install! Order-------- Line I (Please read the precautions on the back before filling out this page) 8888 ABCD 4 2 4 3 S 4 VI. Patent Application Scope-Error correction detector to pass the second The error correction information contained in the data transmitted by the decoder is decoded. (Please read the precautions on the back before filling this page) 1 7 .—A method for transmitting coded data between the remote control mobile phone of a digital radiotelephone and the base station, which includes: Selecting one of the many coded paths To provide compressed data to an RF transmitter, each coding path includes coders with different compression ratios; and the data is transmitted from the selected coding path to the RF transmitter. 1 8 · If the method of transmitting coded data for item 17 of the scope of patent application includes: Stop the uncoded ones of the many coded paths to start. 19. If the method for transmitting coded data for item 17 of the scope of the patent application includes:: Reduce the M I P S of one of the many coded paths to save power. 2. If the method of transmitting coded data for item 17 in the scope of patent application includes: Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs, including forward error correction information and at least one of many coded paths. 2 1 · —A method for decoding data received between a remote control handset and a base unit, the method includes: selecting one of a number of decoding paths to provide a decompressed data to a digital-to-analog converter, each decoding path includes a separate Decoders with different decompression ratios; transfer the data to the digital-to-analog conversion from the selected decoding path; this paper size applies the national standard (CNS) A4 specification (210 X 297 mm) -21-economic but smart Printed by the Consumers' Cooperative of the Property Bureau 4 2 4 3 d 4 as B8 C8 D8 VI. Patent Application No. 5 2 2. If the method of decoding the data in the 21st item of the patent application, the method includes: The decoding path stops starting. 2 3. The method of data decoding according to item 21 of the scope of patent application, including: reducing the M I P S rate of the selected path among many decoding paths. 2 4. If the data decoding method of item 21 of the patent application scope includes ·-decodes forward error correction information included in the data passing through at least one of many decoding paths. 2 5. A transmitter baseband processor, comprising: a first encoding device having a first compression ratio; a second encoding device having a second compression ratio higher than the first compression ratio; and an error correction encoding device to provide a pass through the first Error correction of the data of the two-code device. 2 6. The transmitter baseband processor according to item 25 of the patent application scope, including: M IP S adjustment device to adjust the M IPS rate of at least one of the first encoding device and the second device. 2 7. A receiver baseband processor, including: a first decoding device having a first decompression ratio; a second decoding device having a second decompression ratio which is higher than the first decompression ratio; CNS) A4 specification (210 X 297 public love) -22- (Please read the precautions on the back before filling this page) --I ---- I Order-IIIII. ^ 24364- 〃, ratio of patent application scope; and Jinri sk modified the detection device to detect the existence of the error correction contained in the data of the second decoding device. 3 2 8 _If the receiver baseband processor of the scope of patent application No. 27 includes: Μ IPS The adjusting device adjusts the M IPS rate of at least one of the first decoding device and the second decoding device. 2 9. —A transmitter baseband processor for a digital radiotelephone 'includes: a first coder; a second coder including forward error correction; and a communication quality analysis module adapted to the first coder And the second coder are selected according to the quality of the received signal. 30. If the baseband processor for a digital radiotelephone transmitter according to item 29 of the patent application scope, wherein: the quality of the received signal is according to the received signal strength indication. 31. The transmitter baseband processor for digital radiotelephones according to item 29 of the patent application, where: ^ The quality received is based on the frame error rate. 32. For the baseband processor of the transmitter of the digital radiotelephone according to item 29 of the patent application scope, wherein: the quality of the received signal is based on the frame error rate. 3 3, A method for transmitting coded signals between a remote control mobile phone and a base unit of one of the digital wireless phones. The method includes: (谙 Read the precautions on the back before filling this page)-I --- I — I Revision --- III --- Printed by Hao Gong Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs. The paper size is applicable to the Chinese national standard (CNS > A4 specification (210 X 297 mm) -23- A8B8C8D8 4 η 〇tj 4 The scope of the patent application selects one of the many coding paths to provide compressed data to the RF transmitter. Each of the many coding paths includes a separate coder, and at least one of the many coding paths includes forward error correction: and a selected coding path transmission. The data is transmitted to the RF transmitter. 3 4. The method for transmitting coded signals between one of the digital radiotelephones and one of the digital radiotelephones and a base unit for transmission of coded signals, such as: An indication of the strength of the received signal and a frame error rate.... 3 5 The remote control of one of the digital radiotelephones and the transmission of a base unit, such as in the patent application No. 33. The method of using a coded signal, wherein: The selection of the selection step is based on both the received signal strength indication and the frame error rate. L .--------- I If .-------- tr '--------- line (please read the notes on the back before filling out this page) The paper size printed by Shelley Consumer Cooperative of Intellectual Property Bureau of the Ministry of Economic Affairs applies this Chinese paper standard (CNS) A4 specification ( 210 X 297 mm) -24-