TH27291B - Method for controlling the encryption mode and decoding mode determination device - Google Patents

Abstract

DC60 (11/07/40) in digital cellular radio communication system. The parent station selects (120) speech / channel encoding mode. Based on measurement (110), local radio environment, the mobile station determines (140) the mode selected by trying to decode the mode. It is possible to find the most possible mode and use the same (170) mode for transmission. To the parent station on the reverse connection point, the increase / decrease value obtained by switching mode may be used to adjust the transmitter output power, thus reducing the total interference level in the system into the system. Communicate via digital cellular radio Magnetic station (120) speech / channel encoding mode Based on measurement bases (110), localized radio environment. The mobile station determines (140) the selected mode, tries to decipher the possible modes to find the most possible mode and uses the same (170) mode for transmission to the parent station on the reverse connection point. The reduction achieved by the switching mode may be used to adjust the transmitter output power, thus reducing the total interference level in the system.

Claims (4)

1. How to control the access mode in digital cellular radio communication systems. With communication channels Where at least some of it will coexist with a set of encryption modes. Each mode has a different combination of Speech Encoder bit rate and Data protection bit rate. But all existing net bit rates are the same Where the method consists of - determination of the first measurement of a local radio condition at the transmission end of the first connection; - selection of encoder mode at the sending end, transmitter from the set At the very least Will be partially dependent on the first measurement; - transmission in encoded mode of the selected transmitter to the receiving end of the first connection; - The decoding experiment at the receiving end Which the signal received in the decoding mode of many receivers corresponding to the encoding mode of the transmitter - selection at the receiving end Where the decoding mode of the receiver most likely to provide the best decoding speech quality is the decoding mode of the receiver at that time; - selection at the receiving end, which the encoder mode of the receiver from the set Where at least partially depends on the decoding mode of the selected receiver; And - transmission from the receiving end in the encrypted mode of the selected receiver on the second access point using the other channel from the receiving end to the sending end 2. Method as specified in Clause 1 which consists of Implementation of the following steps at the sending end; - determining the receiver's encryption mode of the second connection; - using the transmitter's decoding mode that matches the assigned receiver's encoding mode; and - the selection of the transmitter's encryption mode from the partial set. Based on the first measurement specified And partially depends on the encoding mode of the receiver specified 3. The methods described in Clause 1, which consist of Management according to the following steps At the receiving end - determination of the second measurement of the local radio condition at the receiving end, and - selection of the receiver's encoding mode from the partial set. Depending on the encoding mode of the transmitter that has been set This is partly based on the second measurement required. 4. The methods identified in Clause 1 include - Encrypted Speech Examination used to check for latent errors and / or coded speech. Used to correct error for each decoded mode; And - The most likely selection of the decoding mode of the receiver and / or transmitter based on the coded speech used to detect latency and / or encoded speech discrepancies is the current decoding mode. As stated in Clause 1, which includes Selection of the decoding mode of the receiver and / or transmitter for obtaining the decoded speech best correlated with the previously decoded and received speech 6.Methods as stated in Clause 1. Where Decoding only the decoding mode of the current receiver and / or transmitter and its closest mode with the respective high and low bit protection rate.7.Methods as stated in Claim 1, which include The stages of; Pointer word code combination indicates the transmitter encoding mode in transmission from the sending end. Where the process of decoding the received signal To be composed further with the steps of; - Word decoding experiment, pointer shows the encoding mode of the transmitter in the decoding mode of many receivers. To generate a large estimate of the transmission from the sending end; - Experiment for encoding in many transmitter encryption modes that match with many receiver's decoding modes. Where each estimate is a large number of transmissions from the transmission end to generate a large approximate number of code words, the pointer indicates the encryption mode; And where the steps of selecting the decoding mode of the receiver consist of the steps of; - Comparisons of many estimates of the code word pointer displayed. Transmitter encryption mode with code word Pointer indicates the transmitter encryption mode received from the sending end. Where the receiver's encoding mode is selected on the basis of an approximation of the code word, the pointer shows the transmitter encoding mode that is most similar to the code word, the pointer shows. The sender's encryption mode that is picked up from the sending end. 8. Method as described in Clause 1, where at the receiving end. The receiver's encryption mode is selected only on the basis of the specified transmitter's encryption mode. 9.Method stipulated in Clause 8, where at the end of such transmission It consists of base stations 1 0. Methods stated in Clause 1 where digital cellular radio communication system is TDMA 1 system 1. Methods as stated in Claim 1 at The digital cellular radio communication system is the CDMA 1 system 2. The method specified in Clause 1 where the digital cellular radio communication system is the FDMA 1 system 3. The method Energy control in digital cellular radio communication systems With communication management channel At the very least Some of them are combined with a series of speech / channel encoding modes, each with different combinations of speech encoding bit rates. And the rate of bit protection But all existing net bit rates are the same Where it consists of performing the following steps At the forward end of the connection point By means of a communication signal; - Substituting the broadcast mode to the channel with another mode in series with higher or lower data protection bit rates and lower speech encoder bit rates. Or higher if the radio conditions deteriorate or improve and / or the burden of the channeling in the system increases or decreases; - Specifying the selected encryption mode in the mode pointer sent with the encrypted bit; And - reduction or increase Communication management channel output power Until lower or higher In such a way that the decoded speech quality is measured at the receiving end of the said connection. It will be the same as before, changing the radio conditions and / or the burden of channeling 1 4. The method stated in Clause 1 which consists of the following steps. At the receiving end of the connecting point; - Assessment to measure the quality of the speech of the decoding; - Request for a mode change to the sending end on the reverse connection from the receiving end to the sending end. If the measured decoded speech quality has changed more than the specified quantity; And - Changing the decoding mode corresponding to the last received speech / transponder encoding mode 1 5. Method as specified in Clause 14, which is directed by the field of the requested mode, is sent. Provide such reverse channel To identify the encryption mode requested by the receiving end 1. 6. The method described in Clause 13, which consists of the following steps at the forward end of the connection; - Evaluation of such decoded speech quality measurements on the backward connection from receiving end to sending end; - Using the transcribed speech quality measurement assessed at the transmission end as a quality measure. Deciphered speech assessed at the receiving end; And changing the encryption mode If the decoded speech quality assessed at the receiving end has changed more than the required quantity 1 7. The method specified in Clause 13, which consists of allowing only the receiving end. And one end of the sending end to control the switching mode 1. 8. Methods stated in Clause 17 which consists of Allowing only the base station to control the switching mode 1 9. Methods outlined in Clause 13 where the estimated decoding quality of the decoded speech consists of the estimated bit-decode tolerance rate 2. 0. Methods outlined in Clause 13 where such digital cellular radio communication system is TDMA 2 system. 1. Methods for energy regulation in digital cellular radio communication systems with communication management channels. With some of it being the least It is associated with a set of speech / channel encoding modes, each of which provides a different broadcast rate of the speech encoder bit rate and the data protection bit rate. But all existing net bit rates are the same Where Implementation of the following steps At the sending and receiving ends of the connection points using a communication channel; A at the forwarding end of the connection point; - Replaces the mode distributed to that channel with another mode in the series with higher or lower data protection bit rates and lower speech encoder bit rates. Or higher if radio conditions deteriorate or improve and / or the burden of tethering in the system increases or decreases; - Specifying the optional encoding mode in the mode pointer that is transmitted with the bit encoding. ; And - reduction or increase The power output of the communication management channel. Until lower or higher In such a way that the estimated decoded speech quality measurement is at the receiving end of the connection point. It is the same as before the change in radio conditions and / or the burden of communication channel arrangement; B at the receiving end of the connection - the received signal is decoded in various decoding modes corresponding to the said speech / channel encoding mode; And - The selection of decoding mode which offers the best quality decoding speech quality is the current decoding mode 2. 2. Energy control system in digital cellular radio communication system. With communication channels Where at least some of them coexist with a set of speech / channel encoding modes, with each mode having different combinations of Speech Encoder bit rate and Data protection bit rate. But all existing net bit rates are the same Where The following devices at the sending end of the connection use a communication channel; - A path to replace the distributed mode of the channel with another In a set with a higher or lower data protection bit rate and a lower or higher speech encoder bit rate. If the radio conditions deteriorate or improve and / or the system load increases or decreases; And - a method for including a mode pointer that specifies the encoding mode instead of in the bit stream containing the encrypted bit; And - means to reduce or increase the output power of the communication channel. To a lower or higher level in such a way that the assessed decoded speech quality measurement at the receiving end of the connection is the same as before the change in radio conditions and / or communication handling load 2. 3.Energy control system As set out in claim 22, where digital cellular radio communication systems are TDMA 2. 4.Energy control system in a digital cellular radio communication system with a communication management channel. Where some, at least part of it, coexist with a set of speech / channel encoding modes. With each mode having different combinations Of the bit rate of the speech encoder and the rate of the protected bit But all existing net bit rates are the same Where The following devices are available at the sending and receiving ends of the connection points by means of a communication channel; A at the receiving end of the connection point; - A way to replace the channel distributed mode with another mode in the series with higher or lower bit rate protection. And the bit rate of the speech encoder is lower or higher. If the radio conditions deteriorate or improve and / or the burden of the channeling in the system increases or decreases; - A means for reducing or increasing the output power of the communication management channel. Until lower or higher In such a way that the decoded speech quality measured at the receiving end of the joint Shall be the same as before the change in radio conditions and / or the burden of the channel arrangement; B at the receiving end of the connection point; - A means for decoding the received signal in all decoders corresponding to the speech / channel encoding mode; And - a way to select the coding mode with the best decoding quality as the current decoding mode.