CN102843206B - Based on the voice transmission method of channel associated signalling - Google Patents
Based on the voice transmission method of channel associated signalling Download PDFInfo
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- CN102843206B CN102843206B CN201210293292.3A CN201210293292A CN102843206B CN 102843206 B CN102843206 B CN 102843206B CN 201210293292 A CN201210293292 A CN 201210293292A CN 102843206 B CN102843206 B CN 102843206B
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Abstract
The invention discloses a kind of voice transmission method based on channel associated signalling, comprise the following steps: 1) voice transmission end is when audio call is initiated, send voice to phonetic incepting end and start signaling, then be that base unit carries out voice transfer with voice superframes, this voice superframes is made up of multiple voice bursts frame; 2) in the payload region of each voice bursts frame, insert voice frame alignment word FS1 and channel associated signalling territory CCF, described channel associated signalling territory CCF comprises channel associated signalling unit; 3) a voice channel associated signalling is formed by multiple channel associated signalling unit, often transmit a voice superframes, also transmit a voice channel associated signalling simultaneously, to realize certain specific function required in sound transmission course, until after voice are all sent completely, voice transmission end sends voice to phonetic incepting end and terminates signaling to terminate voice transfer.The present invention forms a voice channel associated signalling by channel associated signalling unit multiple in voice bursts frame, can complete functions such as entering late, toll breakdown.
Description
Technical field
The present invention relates to a kind of voice transmission method, especially a kind of voice transmission method based on channel associated signalling.Belong to wireless communication technology field.
Background technology
Channel associated signalling (CAS:ChannelAssociatedSignaling) refers to that the signal of each speech channel is via speech channel itself or a kind of aspect of being transmitted by the signalling channel that speech channel is corresponding, when channel associated signalling is used for voice transfer, some specific function of voice transfer can be completed.
Along with the development of wireless control technology and business, the function required for wireless terminal device also gets more and more.In the voice transfer of wireless communication system, usually be all that elementary cell is transmitted with voice superframes, every six voice bursts frames form a voice superframes, the transmission of each voice superframes be from first voice bursts frame (except first burst, the duration of each burst is 30ms), and not containing channel associated signalling territory CCF in voice bursts frame, a voice channel associated signalling namely cannot be formed.Therefore, in the process of voice transfer, be unfavorable for specific functions such as realizing fast entering late, toll breakdown.
Summary of the invention
Object of the present invention is the defect in order to solve above-mentioned prior art, provides a kind of voice transmission method based on channel associated signalling realizing functions such as entering late, toll breakdown fast.
Object of the present invention can reach by taking following technical scheme:
Based on the voice transmission method of channel associated signalling, it is characterized in that comprising the following steps:
1) voice transmission end is when audio call is initiated, and sends voice start signaling to phonetic incepting end, and be then that base unit carries out voice transfer with voice superframes, this voice superframes is made up of multiple voice bursts frame;
2) in the payload region of each voice bursts frame, insert voice frame alignment word FS1 and channel associated signalling territory CCF, described channel associated signalling territory CCF comprises time slot type unit, channel direction unit, channel status unit, first indexing unit and the channel associated signalling unit for embedding special signaling;
3) a voice channel associated signalling is formed by the multiple channel associated signalling unit in multiple voice bursts frame, often transmit a voice superframes, also transmit a voice channel associated signalling simultaneously, to realize certain specific function required in sound transmission course, until after voice are all sent completely, voice transmission end sends voice to phonetic incepting end and terminates signaling to terminate voice transfer.
As a kind of preferred version, step 2) described in speech frame synchronization character FS1 and channel associated signalling territory CCF payload region is divided into two symmetrical regions.
As a kind of preferred version, described channel associated signalling territory CCF has two, and two channel associated signalling territory CCF are symmetricly set on the both sides of speech frame synchronization character FS1.
As a kind of preferred version, described speech frame synchronization character FS1 takies 48 bits; Described each channel associated signalling territory CCF takies 12 bits, takies 24 bits altogether; Each payload region takies 144 bits, takies 288 bits altogether; The voice bursts frame be made up of channel associated signalling territory CCF, frame alignment word, payload region takies 360 bits altogether, and its total duration is 37.5ms.
As a kind of preferred version, the significance bit of described channel associated signalling territory CCF is 12 bits, and wherein time slot type unit takies 1 bit, channel direction unit takies 1 bit, channel status unit takies 1 bit, and first indexing unit takies 1 bit, and channel associated signalling unit takies 8 bits.
As a kind of preferred version, described voice superframes is made up of eight voice bursts frames, comprises the voice channel associated signalling of 64 bits.
As a kind of preferred version, between every two adjacent voice bursts frames, all contain the guard time of 2.5ms.
The present invention has following beneficial effect relative to prior art:
1, the present invention inserts channel associated signalling territory CCF in each voice bursts frame, special signaling is embedded when wherein channel associated signalling unit is used for voice transfer, the specific function such as form a voice channel associated signalling by multiple channel associated signalling unit, may be used for the entering late of voice transfer, toll breakdown.
2, the present invention passes through the establishment to speech frame synchronization character FS1 in voice bursts frame and channel associated signalling territory CCF, can obtain control and identifying information instruction in the voice bursts frame received, and facilitates receiving terminal to dock collection of letters breath and better identifies and process.
Accompanying drawing explanation
Fig. 1 is voice transfer schematic diagram of the present invention.
Fig. 2 is the structural representation of voice bursts frame of the present invention.
Embodiment
Embodiment 1:
The voice transmission method of the present embodiment comprises the following steps:
1) voice transmission end is when audio call is initiated, and sends voice start signaling to phonetic incepting end, and be then that base unit carries out voice transfer with voice superframes, this voice superframes is made up of eight voice bursts frames;
2) in the payload region of each voice bursts frame, insert a speech frame synchronization character FS1 and two channel associated signalling territory CCF, this channel associated signalling territory CCF comprises time slot type unit, channel direction unit, channel status unit, first indexing unit and the channel associated signalling unit for embedding special signaling;
3) a voice channel associated signalling is formed by eight channel associated signalling unit in eight voice bursts frames, often transmit a voice superframes, also transmit a voice channel associated signalling simultaneously, to realize the specific function of voice transfer, until after voice are all sent completely, voice transmission end sends voice to phonetic incepting end and terminates signaling to terminate voice transfer.
As shown in the voice transfer of Fig. 1, wherein MS1 represents transmitting terminal, and MS2 represents receiving terminal, and C_BE1 represents that voice start signaling, and C_BE2 represents that voice terminate signaling, and Tx_Voice represents transmission voice.
As shown in Figure 2, step 2) described in a speech frame synchronization character FS1 and two channel associated signalling territory CCF payload region is divided into two symmetrical regions, each region takies 144 bits, takies 288 bits altogether; Described speech frame synchronization character FS1 takies 48 bits; Two channel associated signalling territory CCF are symmetricly set on the both sides of speech frame synchronization character FS1, each channel associated signalling territory CCF takies 12 bits, take 24 bits altogether, channel associated signalling territory CCF is through (24,12) Golay code FEC (ForwardErrorCorrection, forward error correction), obtaining significance bit is 12 bits, and wherein time slot type unit takies 1 bit, channel direction unit takies 1 bit, channel status unit takies 1 bit, first indexing unit takies 1 bit and channel associated signalling unit takies 8 bits.The channel associated signalling territory CCF of voice bursts frame, except judging time slot type, channel direction and channel status, also for transferring voice channel associated signalling, embeds special signaling when wherein channel associated signalling unit is used for voice transfer, as shown in table 1 below.
The significance bit definition of table 1 channel associated signalling territory
Two payload regions are used for transferring voice (Voice), and the guard time region being provided with 12 bits in each payload region, has 24 bits, the stable and Electromagnetic Wave Propagation delay for transmitting power.
The voice bursts frame be made up of above-mentioned speech frame synchronization character FS1, channel associated signalling territory CCF and payload region, takies 360 bits altogether, and total duration is 37.5ms; Add that guard time takies 384 bits altogether, total duration is 40ms.
A voice superframes is made up of eight voice bursts frames, and the channel associated signalling unit containing 8 bits in each voice bursts frame, the voice channel associated signalling of 64 bits is made up of eight channel associated signalling unit, for realizing the function entered late, as shown in table 2 below.
| Information unit | Length | Explanation |
| CC | 4bits | Colour coding |
| CT | 8bits | Type of call |
| Daddr | 24bits | Destination address |
| Saddr | 24bits | Source address |
| CRC | 4bits | Cyclic redundancy check (CRC) |
A kind of voice channel associated signalling of table 2 for entering late
The above; be only the preferred embodiment of the invention; but protection scope of the present invention is not limited thereto; anyly be familiar with those skilled in the art in scope disclosed in this invention; be equal to according to technical scheme of the present invention and inventive concept thereof and replace or change, all belonged to protection scope of the present invention.
Claims (2)
1., based on the voice transmission method of channel associated signalling, it is characterized in that comprising the following steps:
1) voice transmission end is when audio call is initiated, and sends voice start signaling to phonetic incepting end, and be then that base unit carries out voice transfer with voice superframes, this voice superframes is made up of eight voice bursts frames;
2) in the payload region of each voice bursts frame, insert a speech frame synchronization character FS1 and two channel associated signalling territory CCF, speech frame synchronization character FS1 and channel associated signalling territory CCF and payload region is divided into two symmetrical regions: two channel associated signalling territory CCF are symmetricly set on the both sides of speech frame synchronization character FS1; Described channel associated signalling territory CCF comprises time slot type unit, channel direction unit, channel status unit, first indexing unit and the channel associated signalling unit for embedding special signaling;
3) a voice channel associated signalling is formed by each and every one channel associated signalling unit of eight in eight voice bursts frames, often transmit a voice superframes, also transmit a voice channel associated signalling simultaneously, to realize certain specific function required in sound transmission course, until after voice are all sent completely, voice transmission end sends voice to phonetic incepting end and terminates signaling to terminate voice transfer;
Step 2) described in speech frame synchronization character FS1 take 48 bits; Described each channel associated signalling territory CCF takies 12 bits, takies 24 bits altogether; Each payload region takies 144 bits, takies 288 bits altogether, for transferring voice; Each payload region while be provided with the guard time region of 12 bits, having 24 bits, postponing for making the stable and Electromagnetic Wave Propagation of transmitting power; The voice bursts frame be made up of channel associated signalling territory CCF, frame alignment word, payload region takies 360 bits altogether, and its total duration is 37.5ms; The significance bit of described channel associated signalling territory CCF is 12 bits, and wherein time slot type unit takies 1 bit, and channel direction unit takies 1 bit, and channel status unit takies 1 bit, and first indexing unit takies 1 bit, and channel associated signalling unit takies 8 bits; Described voice superframes is made up of eight voice bursts frames, comprise the voice channel associated signalling of 64 bits, voice channel associated signalling comprises the cyclic redundancy check (CRC) of the colour coding of 4 bits, the type of call of 8 bits, the destination address of 24 bits, the source address of 24 bits and 4 bits, for realizing the function entered late.
2. the voice transmission method based on channel associated signalling according to claim 1, is characterized in that: the guard time all containing 2.5ms between every two adjacent voice bursts frames.
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| CN103634878B (en) * | 2013-12-11 | 2017-03-15 | 海能达通信股份有限公司 | A kind of communication means and terminal based on TDMA communication system |
| CN106301524B (en) * | 2016-08-31 | 2019-08-02 | 上海应用技术学院 | It is a kind of to inhibit wirelessly with the communication means of frequency junction network self-excitation |
| CN106656420B (en) * | 2016-12-23 | 2019-10-29 | 海能达通信股份有限公司 | Backward signaling transmission method, device and the communication equipment of private network system |
| CN107040359B (en) * | 2017-05-08 | 2021-01-19 | 海能达通信股份有限公司 | Method, device and equipment for carrying channel associated signaling in voice calling process |
| WO2018205080A1 (en) * | 2017-05-08 | 2018-11-15 | 海能达通信股份有限公司 | Method, device and apparatus for carrying channel associated signaling during voice calling process |
| CN109787675A (en) * | 2018-12-06 | 2019-05-21 | 安徽站乾科技有限公司 | A kind of data analysis method based on satellite voice channel |
| CN115378533A (en) * | 2021-05-20 | 2022-11-22 | 海能达通信股份有限公司 | Method, device and computer readable storage medium for improving frame synchronization rate |
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| CN101562486A (en) * | 2009-06-09 | 2009-10-21 | 中国传媒大学 | Method for adding associated audio frequency signaling to frequency modulation synchronized broadcast |
| CN101931500A (en) * | 2010-08-19 | 2010-12-29 | 优能通信科技（杭州）有限公司 | Method for transmitting backward control signaling by using control channel in DMR system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101562486A (en) * | 2009-06-09 | 2009-10-21 | 中国传媒大学 | Method for adding associated audio frequency signaling to frequency modulation synchronized broadcast |
| CN101931500A (en) * | 2010-08-19 | 2010-12-29 | 优能通信科技（杭州）有限公司 | Method for transmitting backward control signaling by using control channel in DMR system |
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