CN101502142A - Voice message format in trunked communication and transmission method therefor - Google Patents
Voice message format in trunked communication and transmission method therefor Download PDFInfo
- Publication number
- CN101502142A CN101502142A CNA2006800555206A CN200680055520A CN101502142A CN 101502142 A CN101502142 A CN 101502142A CN A2006800555206 A CNA2006800555206 A CN A2006800555206A CN 200680055520 A CN200680055520 A CN 200680055520A CN 101502142 A CN101502142 A CN 101502142A
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- voice message
- base station
- voice
- speech
- user
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
- H04W4/10—Push-to-Talk [PTT] or Push-On-Call services
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/40—Connection management for selective distribution or broadcast
- H04W76/45—Connection management for selective distribution or broadcast for Push-to-Talk [PTT] or Push-to-Talk over cellular [PoC] services
Abstract
A voice message format in trunked communication and transmission method therefor are disclosed. With the method, the network bandwidth between the base station system and the trunked dispatch server could be saved. The method includes: (a) after establishing a trunked call, the speak user begins speaking, sends voice frames to the base station system; (b) the base station system encapsulates every N voice frames into a voice message and sends the message to a trunked dispatch server; (c) the trunked dispatch server transmits the receiving voice message to the base station system to which all the users in the speak user group belong; (d) the base station system to which all the users in the group belong disassembles the received voice message into N voice frames and transmits the frames to listening users in the group on original order. The voice message includes transmission header, data packet header and the voice data part. The transmission header contains transmission format information. The data packet header contains the user and the voice data information. The voice data part contains multiple voice frames arranged on precedence order.
Description
A kind of voice 4 in cluster communication blunt literary form and its transmission method
Technical field
The present invention relates to the voice message form in trunked communication system, particularly trunked communication system and its transmission method.
Background technology
Trunked communication system based on mobile communication is to be combined together cellular telecommunication art with specific schedule communication system, using the communication system of half-duplex operation mode, it is possible to achieve quickly continued, and supports group call（I.e. one-to-many method of calling）.Such trunked communication system can be widely applied to require the departments such as higher enterprises and institutions, public security, police and army to commander, scheduling feature.
Group call is important service feature in group system, by being shared under sector before the method for reverse traffic channel there is provided to a small range Large Copacity group（One group can include hundreds of user terminal, and these user terminals are all located under the sector of small range）Group call support.Single user is allowed to be conversed simultaneously with all users in group, user in group, in addition to speaking, other people must listen to.
In cluster communication, the speech frame sent up for mobile station from eating dishes without rice or wine, general length is smaller, and by base station system into the transmitting procedure of trunking dispatch server, transmission head is added before net load, by way of IP or other modes transmission, can be caused than larger network bandwidth waste, in order to save the Internet resources between base station and trunking dispatch server, it is necessary to which the message between base station system and trunking dispatch server is Resealed.The content of the invention
The technical problem to be solved in the present invention is to provide a kind of transmission method of voice message in cluster communication, to save the network bandwidth between base station system and trunking dispatch server.
In order to solve the above problems, the invention provides a kind of transmission method of voice message in cluster communication, comprise the following steps：
) after trunked call sets up, say that user starts speech, the terminal of the user is to affiliated base station
System sends speech frame；
(b) base station system is often received after N number of speech frame, is encapsulated into a voice message, is sent to trunking dispatch server；
(c) trunking dispatch server is received after voice message, and the voice message is transmitted into this says base station system in groups of users belonging to all users；
(d) voice message is split into N number of speech frame by the base station system in group belonging to all users after voice message is received, and is sent to by original order in group and is listened user.
Further, the above method can also have the characteristics that：Step（B) and（D) it is to split into N number of speech frame into a voice message, and by a voice message by base station controller or cluster client end by N number of encapsulating voice frames in the base station system in.
Further, the above method can also have the characteristics that：Step（B) in, the base station controller is when encapsulating voice message, and interpolation data packet header, then adds transport header again before N number of speech frame.
Further, the above method can also have the characteristics that：The data packet header includes：Say user's mark, frame number and frame number；The transport header includes：Generic route encapsulation head and IP heads.
Further, the above method can also have the characteristics that：The Bu Sudden（D) in, say that the base station controller in user's own base station system is received after voice message in group, user terminal is listened as having in service range, the voice message is split into N number of speech frame again, speech frame is sent in respective service range by original order by base station transceiver and listens user terminal.
Further, the above method can also have the characteristics that：The span of the N is between 2 and 20.
Further, the above method can also have the characteristics that：Methods described is applied to the trunked communication system of CDMA standards.
Another technical problem to be solved by the present invention is that providing a kind of voice message form in cluster communication, voice is transmitted using such a message format, the network bandwidth between base station system and trunking dispatch server can be saved, increased network utilization.
In order to solve the above problems, the invention provides a kind of voice message form in cluster communication, the voice message is transmitted between base station system and trunking dispatch server, including transport header, data packet header and speech data part, the transport header includes transmission means information, the data packet header includes user and speech data information, and the speech data part includes the multiple speech frames sequentially arranged.
Further, above-mentioned voice message form can also have the characteristics that：The transport header includes IP and GRE heads.
Further, above-mentioned voice message form can also have the characteristics that：The data packet header includes saying user's mark, voice frame number and speech frame number.
Further, above-mentioned voice message form can also have the characteristics that：The speech data part includes 2 20 speech frames.
From the foregoing, it will be observed that the present invention is by saying that the speech frame of user is packaged, in the time delay for ensureing voice simultaneously, being effectively saved the network bandwidth.If each speech frame is transmitted, network utilization is 39.6%, the network bandwidth is seriously wasted during transmission, and the transmission means 4 encapsulating voice frames together, network utilization is 71.7%, the network bandwidth that can be saved well between base station system and trunking dispatch server, with great commercial value.Summary of drawings
Fig. 1 is trunked communication system schematic network structure of the embodiment of the present invention；
Fig. 2 is the transmission method schematic diagram of voice message in cluster communication of the embodiment of the present invention；Fig. 3 is the form of voice message in cluster communication of the embodiment of the present invention.
The better embodiment of the present invention
Technical scheme main points are：After base station system receives the voice message for the user that speaks, it is not to be transmitted at once between base station system and trunking dispatch server, but receive after the N number of message for the user that speaks, it is packaged together, then it is transmitted again, so as to reach the purpose for saving the network bandwidth between base station system and trunking dispatch server.
Fig. 1 is that one kind of the embodiment of the present invention is based on being related to CDMA CDMA (Code Division Multiple Access CDMAs accesses）The network structure of the group system of standard, is related to by PDS (PTT Dispatch Server, trunking dispatch server）, PDC (PTT Dispatch Client, cluster client end）, BS (Base Station base station systems, including BSC (Base Station Controller, base station controller）With BTS (Base-station Transceiver System, base station transceiver））, (Mobile Station, mobile station is also referred to as terminal to MS）The group system network of composition.
When Fig. 2 is implemented, PDC can be placed on BSC, can also be built in BSC, and PDC is the mode for being built in BSC in this example.In present example, MS1, MS2 and MS3 belong to same group, and MS1 and MS2 is in BTS1 coverage, and MS3 is in BTS2 coverage, and BSC1/PDC1 and BSC2/PDC2 are connected by router and internet with PDS.For the digital cluster system based on CDMA, its speech frame eated dishes without rice or wine sends the time for 20ms, a voice message is packaged into this example to 4 speech frames (N=4) in base station system side to be transmitted, N can also be arranged to other numerical value.
Fig. 2 shows the flow of the blunt literary transmission method of the voice 4 of the present embodiment, and Bao includes Yi Xia Bu Sudden：Step 201, trunked call, which is set up, completes, and MS1 is says that other users is listen user in user, group, and MS1 starts speech, BTS 1 of the speech frame 1,2,3,4 as belonging to 20ms interval is sent to MS 1;
Step 202, speech frame is transmitted to BSC1/PDC1 by BTS1;
Bu Sudden 203, BSC1/PDC1 receive BTS1 speech frame, are not sent at once to PDS, but receive after the 4th speech frame, 4 encapsulating voice frames into a voice message, add GRE and IP heads, are sent to PDS；
Due to saying that user's speech is formula of temporarily having a rest, in N number of speech frame, there are some to include voice messaging, some are probably null frame（When user is silent, the frame that mobile station is sent to base station）, in spite of comprising voice messaging, when its cumulative total is 4, base station system just answers trunking dispatch server to send, to ensure the time delay of voice.
PDS receives voice message, while distributing voice message to PDC1 and PDC2, following steps 204-206 and step 207 ~ 209 are concurrent.
Step 204, PDS forwards voice message to BSC1/PDC1, and PDS is to speech payload therein without any change；
Step 205, BSC1/PDC1 receives voice ^1After blunt text, the blunt texts of voice ^^ are splitted into 4 speech frames, sent to BTS1；
Step 206, BTS1 eat dishes without rice or wine to send in order to MS2 with 20ms interval speech frame 1,2,
3rd, 4, due to MS1 to say user, BTS1 does not send speech frame to MS1；
If only saying user in BSC1, PDS still can send out voice message to BSC1/PDC1, and BSC1 can determine whether that who is to say user, without issuing user.
Step 207, PDS forwards voice message to BSC2/PDC2, and PDS is to speech payload therein without any change；
Bu Sudden 208, BSC2/PDC2 is received after voice message, and voice message is splitted into 4 speech frames, sent to BTS2；
Step 209, BTS2 is eating dishes without rice or wine to send speech frame 1,2,3,4 in order to MS3 with 20ms interval.
Follow-up speech frame, such as 5 ~ 8,9-12 of speech frame ... ... etc., every 4 are one group, to be sent to terminal with the identical mode of speech frame 1 ~ 4.
Fig. 3 shows the form of the voice message used in the present embodiment cluster communication.The form of the voice message refers to the form transmitted in base station system and trunking dispatch server.
As illustrated, the voice message includes transport header, data packet header and N number of speech data.Wherein：
Transport header is determined by transmission means, can be IP transmission means or other transmission means, as this example uses IP and GRE (Generic Routing Encapsulation, generic route encapsulation) mode transmits, transport header includes IP and GRE heads, IP is bottom, and GRE is upper strata.But can also be using other transmission means and corresponding transmission head.
Data packet header includes the relevant information of speech data, and this example includes：Say that (International Mobile Subscriber Identification Number, international mobile subscriber is known another by the IMSI of user1J codes）, frame number and frame number；The content of data packet header can be set by manufacturer oneself, such as use it
It say user identify, such as ESN replaces IMSI.
Speech data is the voice of user, including the multiple speech frames sequentially arranged, referring specifically to embodiments of the invention.
The present invention is by saying that the speech frame of user is packaged, while the time delay of voice is ensured, being effectively saved the network bandwidth.In order to be effectively saved the network bandwidth, and ensure voice delay time, the value for N should determine that N value is bigger according to actual application, and saving bandwidth is higher, but voice delay time is bigger；N value is fewer, and saving bandwidth is fewer, but voice delay time is smaller, and N value typically recommends 2 to 20.
It was found from above example, in the group system based on CDMA, the length of speech frame per 20ms is 21Byte, and IP are 20Byte, GRE are 12Byte, if each speech frame is transmitted, network utilization is 39.6%, the network bandwidth is seriously wasted during transmission, and the transmission means 4 encapsulating voice frames together, network utilization is 71.7%, the network bandwidth that can be saved well between base station system and trunking dispatch server, with great commercial value.
Certainly, the present invention can also have other various embodiments, in the case of without departing substantially from spirit of the invention and its essence, those skilled in the art work as can make various corresponding changes and deformation according to the present invention, such as applied in the group system of different systems, above flow can also be applied.These corresponding changes and deformation should all belong to the protection domain of appended claims of the invention.
For example, for the base station system BSC/PDC in embodiment, can be responsible for N number of encapsulating voice frames by BSC into voice message, or voice message is splitted into N number of speech frame.But it can also be completed by PDC, be the two kinds of concrete modes realized.
Industrial applicibility
The present invention is by saying that the speech frame of user is packaged, in the time delay for ensureing voice simultaneously, being effectively saved the network bandwidth.If each speech frame is transmitted, network utilization is 39.6%, Wang Network bandwidth is seriously wasted during transmission, and the transmission means 4 encapsulating voice frames together, network utilization is 71.7%, the network bandwidth that can be saved well between base station system and trunking dispatch server, with great commercial value.
Claims (1)
- Claims1st, in a kind of cluster communication voice message transmission method, comprise the following steps：(a) after trunked call is set up, say that user starts speech, the terminal of the user sends speech frame to affiliated base station system；(b) base station system is often received after N number of speech frame, is encapsulated into a voice message, is sent to trunking dispatch server；(c) trunking dispatch server is received after voice message, and the voice message is transmitted into this says base station system in groups of users belonging to all users；(d) voice message is split into N number of speech frame by the base station system in group belonging to all users after voice message is received, and is sent to by original order in group and is listened user.2nd, the method as described in claim 1, it is characterised in that step（B) and（D) it is into a voice ^ by base station controller or cluster client end by N number of encapsulating voice frames in the base station system in1Blunt text, and a blunt text of voice is splitted into N number of speech frame.3rd, the method as described in claim 1, it is characterised in that step（B) in, the base station controller is when encapsulating voice message, and interpolation data packet header, then adds transport header again before N number of speech frame.4th, method as claimed in claim 3, it is characterised in that the data packet header includes：Say user's mark, frame number and frame number；The transport header includes：Generic route encapsulation head and IP heads.5th, the method as described in claim 1, it is characterised in that the step（D) in, say that the base station controller in user's own base station system is received after voice message in group, user terminal is listened as having in service range, the voice message is split into N number of speech frame again, speech frame is sent in respective service range by original order by base station transceiver and listens user terminal.6th, the method as described in claim 1, it is characterised in that the span of the N is between 2 and 20.7th, the method as described in claim 1, it is characterised in that methods described is applied to the trunked communication system of CDMA standards.8th, a kind of voice message form in cluster communication, the voice message is in base station system and cluster Transmitted between dispatch server, including transport header, data packet header and speech data part, the transport header includes transmission means information, and the data packet header includes user and speech data information, and the speech data part includes the multiple speech frames sequentially arranged.9th, voice message as claimed in claim 8, it is characterised in that the transport header includes IP and GRE heads.10th, voice message as claimed in claim 8, it is characterised in that the data packet header includes saying user's mark, voice frame number and speech frame number.11st, voice message as claimed in claim 8, it is characterised in that the speech data part includes 2 20 speech frames.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2006/002164 WO2008028316A1 (en) | 2006-08-24 | 2006-08-24 | Voice message format in trunked communication and transmission method therefor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101502142A true CN101502142A (en) | 2009-08-05 |
| CN101502142B CN101502142B (en) | 2011-11-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2006800555206A Expired - Fee Related CN101502142B (en) | 2006-08-24 | 2006-08-24 | Voice message format in trunked communication and transmission method therefor |
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| Country | Link |
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| CN (1) | CN101502142B (en) |
| WO (1) | WO2008028316A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102572725A (en) * | 2012-01-19 | 2012-07-11 | 杭州承联通信技术有限公司 | Trunking communication system PTT (push-to-talk) authorization method capable of effectively reducing authorization delay |
| CN104135340A (en) * | 2014-07-29 | 2014-11-05 | 中国电子科技集团公司第二十研究所 | Processing method of transmission of voice data in data chain channel |
| CN105245521B (en) * | 2015-10-14 | 2019-11-15 | 海能达通信股份有限公司 | Protocol format conversion method, device and interface platform |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6553025B1 (en) * | 1999-08-18 | 2003-04-22 | At&T Corp. | Multiple routing and automatic network detection of a monitored call from an intercepted targeted IP phone to multiple monitoring locations |
| US20030012177A1 (en) * | 2001-07-13 | 2003-01-16 | Dan Vassilovski | Efficient CDMA one-to-many service |
| CN1298183C (en) * | 2004-06-12 | 2007-01-31 | 中兴通讯股份有限公司 | Method for realizing speech buffer storage in digital cluster system |
| CN100388818C (en) * | 2004-11-18 | 2008-05-14 | 中兴通讯股份有限公司 | Method for realizing grouped telecommunication system and calling in intelligent network service |
| CN100454906C (en) * | 2006-07-04 | 2009-01-21 | 华为技术有限公司 | Method and gateway for transmitting voice stream based on network load in wireless packet network |
-
2006
- 2006-08-24 WO PCT/CN2006/002164 patent/WO2008028316A1/en active Application Filing
- 2006-08-24 CN CN2006800555206A patent/CN101502142B/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN101502142B (en) | 2011-11-16 |
| WO2008028316A1 (en) | 2008-03-13 |
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Granted publication date: 20111116 Termination date: 20160824 |