CN100369444C - Non-continuous full rate voice transmitting method in SCDMA system - Google Patents
Non-continuous full rate voice transmitting method in SCDMA system Download PDFInfo
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- CN100369444C CN100369444C CNB2004100848271A CN200410084827A CN100369444C CN 100369444 C CN100369444 C CN 100369444C CN B2004100848271 A CNB2004100848271 A CN B2004100848271A CN 200410084827 A CN200410084827 A CN 200410084827A CN 100369444 C CN100369444 C CN 100369444C
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- 230000005540 biological transmission Effects 0.000 claims abstract description 21
- 230000004913 activation Effects 0.000 claims abstract description 13
- 238000001514 detection method Methods 0.000 claims abstract description 8
- 230000006854 communication Effects 0.000 claims description 9
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- 238000012360 testing method Methods 0.000 claims description 3
- 238000010295 mobile communication Methods 0.000 description 4
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- 238000005516 engineering process Methods 0.000 description 2
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The present invention provides a method for discontinuously transmitting full speed rate voice in an SCDMA system. The present invention comprises the steps that when a terminal and a base station establish a link, the terminal informs the base station that the terminal supports discontinuous transmission of the full speed rate voice, and the base station adopts a coding/decoding mode supporting the discontinuous transmission of the full speed rate voice in the aspect of a code path; the terminal and a vocoder of the base station utilize an activation detection algorithm to detect PCM ditgital voice, and detection results namely a voice activation frame and a mute indication frame or a mute frame are obtained according to input; the base station and the vocoder carry out different coding according to the detection results. Besides, a terminal MDM emission control section emits data of different lengths according to the received results output by the vocoder; a terminal MDM receiving control section simultaneously receives and judeges the received results and controls the received data length; the base station and a terminal vocoder carry out decoding according to the types of packages received by MDM. The method can save the power consumption of an SCDMA terminal and reduce the interference of aerial wireless signals.
Description
Technical field
The present invention relates to a kind of in cellular mobile communication the method for non-continuous full rate voice transmitting, relate in particular to a kind of in S-CDMA (SCDMA) system the method for non-continuous full rate voice transmitting.
Background technology
In mobile communication system, base station and mobile terminal sound encoder carry out compressed encoding to the digital speech of linear impulsive coded modulation (PCM) coding of input, by sending to the decoder of receiving terminal in the air, are reduced into digital speech again.Uplink communication is to carry out compressed encoding in terminal, decodes in the base station; Arrive the switching network that base station controller arrives public network again by E1 circuit (a kind of network communication circuit) after the base station decodes, exchange to base station controller again, pass to the base station; Downgoing communication is to carry out compressed encoding in the base station, decodes in terminal.Because in communication process, it is mutual processes that the dialogue both sides have the timeslice of voice, has 50% voice activation rate on an average on each direction at most.Now, proposed a kind of method of non-continuous full rate voice transmitting in the cell mobile communication systems, saved the power consumption of terminal and reduce the interference of on-air radio signal.Concrete method is: utilize the voice activation detection technique to realize that digital speech to pcm encoder has or not speech to estimate and the acoustic characteristic of background noise is carried out parameter Estimation at coding side; When estimating not have speech, transmitting terminal stops to send signal, and receiving terminal stops the transmission stage at transmitting terminal, utilizes the parameter Estimation generation comfort noise to the acoustic characteristic of background noise.
In existing SCDMA system, employing be the method that the continous way full-speed voice transmits, promptly in communication process, launch continuously all the time, both made in also emission fully between active period of speech the sky bag or the quiet bag of voice packet equal length (i.e. the emission with).Like this, not only terminal power consumption is big, and also bigger to the interference of wireless signal, is unfavorable for actual commercialization.Because the SCDMA system adopts intelligent antenna technology, every frame all must arrive the base station by the certain signal of emission during terminal call, the smart antenna of base station just can work, can not as in other cellular communication systems continuously a period of time terminal do not launch, so the method for non-continuous full rate voice transmitting can not directly be applied in the SCDMA system in the cellular mobile communication.
Summary of the invention
The purpose of this invention is to provide a kind of SCDMA system and implementation method that realizes non-continuous full rate voice transmitting.
The main implementation method of the present invention is exactly to have revised modulator-demodulator of base station and terminal (MDM) and voice control circuit (VCC) software processing module.
Such modification makes base station of the present invention compare with ordinary base station, can control the base station and adopt the code encoding/decoding mode of supporting non-continuous full rate voice transmitting at certain code channel; Can estimate the type of PCM digital speech; Can control output packet type and length; Can control reception length.Also make terminal of the present invention compare with ordinary terminal, whether its processing module can this terminal of informing base station support non-continuous full rate voice transmitting; Can estimate the type of PCM digital speech; Can control output packet type and length; Can control reception length; Can control decoding or produce comfort noise; During up or descending no conversation voice, control terminal MDM is to the type of base station transmit signals or reception base station signal.
The present invention realizes that in the SCDMA system method of non-continuous full rate voice transmitting may further comprise the steps:
(1) in terminal and base station link setup, this this terminal of terminal informing base station is to support the terminal of non-continuous full rate voice transmitting, and the code encoding/decoding mode of supporting non-continuous full rate voice transmitting is adopted in the base station at used communication code channel then;
(2) vocoder of terminal and base station utilizes the voice activation detection algorithm to detect the type of pulse code modulation (pcm) digital speech, and according to input, testing result may be voice activation frame, quiet indication frame or quiet frame;
(3) vocoder of terminal and base station carries out different codings according to the result that the voice activation detection algorithm detects;
(4) modulator-demodulator of terminal (MDM) emission control part, according to the different types of data that the vocoder of the terminal that receives is exported, the data of emission different length;
(5) modulator-demodulator of terminal (MDM) receives control section, judges the data type of receiving while receive, the length of definite data that will receive, thereby the data length that control receives;
(6) vocoder of base station and terminal carries out dissimilar decodings according to the data type that the modulator-demodulator of receiving (MDM) receives.
Preferably, in the described step (3), if the result who detects is the voice activation frame, then according to the full-speed voice compressed encoding and to modulator-demodulator output voice packet; If the result who detects is quiet indication frame, then export quiet indication bag according to agreement; If the result who detects is quiet frame, then export non-transmission bag according to agreement.
Preferably, in the described step (4),, then send all symbols by maximum length according to normal SCDMA one layer protocol if the data of receiving are voice packets; If not the quiet indication bag or the non-transmission bag that then send the short length symbol that agreement reserves.
Preferably, in the described step (5),, then receive all symbols according to normal SCDMA one layer protocol if the result who receives is a voice packet; If quiet indication bag, then receive only the symbol of the short length that agreement reserves; If be non-transmission bag, then receive only the symbol of the shorter length that agreement reserves.
Preferably, in the described step (6),, then recover the digital speech of pulse code modulation according to normal tone decoding algorithm if the data type of receiving is a voice packet; If quiet indication bag or non-transmission bag then utilize comfort noise to produce algorithm and produce comfort noise.
Preferably, during up or descending no conversation voice, terminal modem is only launched or is received quiet indication bag or non-transmission bag.
In addition, when terminal is in holding state, terminal MDM does not transmit, and receives only, and what received this moment is the broadcast bag, and it doesn't matter with voice.
The method of non-continuous full rate voice transmitting of the present invention can be saved the power consumption of SCDMA terminal, and reduces the interference of on-air radio signal.
Description of drawings
Below in conjunction with accompanying drawing the specific embodiment of the present invention is described in further detail.In the accompanying drawing:
Fig. 1 is speech coding and signal emission process chart;
Fig. 2 receives and the tone decoding flow chart for signal.
Embodiment
Base station and terminal are used amended MDM software and VCC software.Below with International Telecommunication Association (ITU) standard G.729B with full rate G.729A agreement be that example is introduced the specific embodiment of the present invention.
In terminal and base station link setup, this this terminal of terminal informing base station is to support the terminal of non-continuous full rate voice transmitting, and the code encoding/decoding mode of supporting non-continuous full rate voice transmitting is adopted in the base station at used communication code channel then.
Fig. 1 shows the flow process of speech coding of the present invention and signal emission processing:
At first, the vocoder of terminal and the base station vad algorithm of using International Telecommunication Association (ITU) standard G.729B to be provided detects the type of pulse code modulation (pcm) digital speech.This algorithm has three kinds of testing results according to the speech frame of current input, i.e. voice activation frame, quiet indication frame and quiet frame.
Then, the vocoder of base station and terminal carries out different codings according to the result that above-mentioned steps detects.If speech frame, then according to full rate agreement compressed encoding and G.729A according to the voice packet behind the existing SCDMA vocoder output packing manner output encoder; If quiet indication frame, then according to special agreement output SID (quiet indication) bag; If quiet frame is then exported non-transmission bag according to special agreement.Wherein the SID bag is to be clipped in gap between a plurality of non-transmission bags to exist, and shows that the background noise of this quiet environment changes to some extent.
Behind the coding, the MDM emission control part of terminal, according to the result that the vocoder of the terminal that receives is exported, the data length of control emission.If voice packet then sends 58 symbols according to normal SCDMA one layer protocol; If the SID bag, then the length according to the SID bag only sends 34 symbols; If be non-transmission bag, then the length according to non-transmission bag only sends 18 symbols.
Fig. 2 shows the flow process of signal reception of the present invention and tone decoding:
At first, the MDM of terminal receives control section, judges the result who receives while receive, the length of definite data that will receive, thereby the data length that control receives.If voice packet then receives 56 symbols according to normal SCDMA one layer protocol; If the SID bag then receives only 34 symbols; If be non-transmission bag, then receive only 18 symbols.
Then, the vocoder of base station and terminal carries out dissimilar decodings according to the bag type that the MDM that receives receives.If voice packet then recovers the PCM digital speech according to the corresponding decoding algorithm of compressed encoding; If SID bag or non-transmission bag then produce comfort noise according to the CNG algorithm that is G.729B provided.
During up or descending no conversation voice, for keep terminal in communication process with base station synchronization, terminal MDM not exclusively stops to base station transmit signals or from base station received signal, but only emission or receive SID bag or non-transmission bag.
In addition, when terminal is in holding state, terminal MDM does not transmit, and receives only, and what received this moment is the broadcast bag, and it doesn't matter with voice.
Because emission or the quiet indication bag or the non-transmission bag that receive are shorter than voice packet, utilize the method for non-continuous full rate voice transmitting of the present invention, can save the power consumption of SCDMA terminal, and reduce the interference of on-air radio signal.
Claims (6)
1. the method for a non-continuous full rate voice transmitting is characterized in that, may further comprise the steps:
(1) in terminal and base station link setup, this this terminal of terminal informing base station is to support the terminal of non-continuous full rate voice transmitting, and the code encoding/decoding mode of supporting non-continuous full rate voice transmitting is adopted in the base station at used communication code channel then;
(2) vocoder of terminal and base station utilizes the voice activation detection algorithm to detect the type of pulse code modulation (pcm) digital speech, and according to input, testing result may be voice activation frame, quiet indication frame or quiet frame;
(3) vocoder of terminal and base station carries out different codings according to the result that the voice activation detection algorithm detects;
(4) modulator-demodulator of terminal (MDM) emission control part, according to the different types of data that the vocoder of the terminal that receives is exported, the data of emission different length;
(5) modulator-demodulator of terminal (MDM) receives control section, judges the data type of receiving while receive, the length of definite data that will receive, thereby the data length that control receives;
(6) vocoder of base station and terminal carries out dissimilar decodings according to the data type that the modulator-demodulator of receiving (MDM) receives.
2. the method for claim 1 is characterized in that, in the described step (3), if the result who detects is the voice activation frame, then according to the full-speed voice compressed encoding and to modulator-demodulator output voice packet; If the result who detects is quiet indication frame, then export quiet indication bag according to agreement; If the result who detects is quiet frame, then export non-transmission bag according to agreement.
3. the method for claim 1 is characterized in that, in the described step (4), if the data of receiving are voice packets, then sends all symbols according to normal SCDMA one layer protocol by maximum length; If not the quiet indication bag or the non-transmission bag that then send the short length symbol that agreement reserves.
4. the method for claim 1 is characterized in that, in the described step (5), if the data of receiving are voice packets, then receives all symbols according to normal SCDMA one layer protocol; If quiet indication bag, then receive only the symbol of the short length that agreement reserves; If be non-transmission bag, then receive only the symbol of the shorter length that agreement reserves.
5. the method for claim 1 is characterized in that, in the described step (6), if the data type of receiving is a voice packet, then recovers the pulse code modulation digital speech according to normal tone decoding algorithm; If quiet indication bag or non-transmission bag then utilize comfort noise to produce algorithm and produce comfort noise.
6. as the described method of one of claim 1 to 6, it is characterized in that during up or descending no conversation voice, terminal modem is only launched or received quiet indication bag or non-transmission bag.
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2004100848271A CN100369444C (en) | 2004-09-30 | 2004-09-30 | Non-continuous full rate voice transmitting method in SCDMA system |
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| CNB2004100848271A CN100369444C (en) | 2004-09-30 | 2004-09-30 | Non-continuous full rate voice transmitting method in SCDMA system |
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| CN1756127A CN1756127A (en) | 2006-04-05 |
| CN100369444C true CN100369444C (en) | 2008-02-13 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101287274B (en) * | 2007-04-11 | 2012-07-04 | 深圳市维信联合科技有限公司 | Voice encryption system for mobile communication and encryption method thereof |
| CN101552819A (en) * | 2009-03-30 | 2009-10-07 | 李林冲 | One-way standby mobile phone |
| CN105101109B (en) * | 2014-05-15 | 2019-12-03 | 哈尔滨海能达科技有限公司 | The implementation method discontinuously sent, terminal and the system of police digital cluster system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1333981A (en) * | 1998-11-24 | 2002-01-30 | 艾利森电话股份有限公司 | Efficient in-band signaling for discontinuous transmission and configuration changes in adaptive multi-rate communications systems |
| WO2002065458A2 (en) * | 2001-01-31 | 2002-08-22 | Qualcomm Incorporated | Method and apparatus for interoperability between voice transmission systems during speech inactivity |
| CN1394447A (en) * | 2000-01-07 | 2003-01-29 | 摩托罗拉公司 | Method and apparatus for simultaneous circuit-switched voice and GPRS data interchange |
| WO2003037013A1 (en) * | 2001-10-25 | 2003-05-01 | Motorola, Inc. | Communication equipment, transcoder device and method for processing frames associated with a plurality of wireless protocols |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1333981A (en) * | 1998-11-24 | 2002-01-30 | 艾利森电话股份有限公司 | Efficient in-band signaling for discontinuous transmission and configuration changes in adaptive multi-rate communications systems |
| CN1394447A (en) * | 2000-01-07 | 2003-01-29 | 摩托罗拉公司 | Method and apparatus for simultaneous circuit-switched voice and GPRS data interchange |
| WO2002065458A2 (en) * | 2001-01-31 | 2002-08-22 | Qualcomm Incorporated | Method and apparatus for interoperability between voice transmission systems during speech inactivity |
| WO2003037013A1 (en) * | 2001-10-25 | 2003-05-01 | Motorola, Inc. | Communication equipment, transcoder device and method for processing frames associated with a plurality of wireless protocols |
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Denomination of invention: Non-continuous full rate voice transmitting method in SCDMA system Effective date of registration: 20110509 Granted publication date: 20080213 Pledgee: Datang Telecom Technology Industry Holding Co., Ltd.|Telecommunications Science and Technology Research Institute Pledgor: Xinwei Communications Technological Co., Ltd., Beijing Registration number: 2011990000168 |
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Correction item: The Pledgee of the pledge of patent right Correct: Datang Telecom Technology Industry Holding Co., Ltd.|Telecommunications Science and Technology Research Institute False: Datang Telecom Technology Industry Holding Co., Ltd.|Telecommunications Science and Technology Research Institute Number: 27 Volume: 27 |
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