CN101502142B - Voice message format in trunked communication and transmission method therefor - Google Patents
Voice message format in trunked communication and transmission method therefor Download PDFInfo
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- CN101502142B CN101502142B CN2006800555206A CN200680055520A CN101502142B CN 101502142 B CN101502142 B CN 101502142B CN 2006800555206 A CN2006800555206 A CN 2006800555206A CN 200680055520 A CN200680055520 A CN 200680055520A CN 101502142 B CN101502142 B CN 101502142B
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- voice message
- base station
- user
- station system
- voice
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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
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- 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
Technical field
The present invention relates to trunked communication system, particularly voice message form and the transmission method thereof in the trunked communication system.
Background technology
Trunked communication system based on mobile communication is that cellular telecommunication art and specific schedule communication system are combined, and adopts the communication system of half-duplex operation mode, can realize continuing fast, supports group call (being the method for calling of one-to-many).Such trunked communication system can be widely used in the departments of commanding, scheduling feature is had relatively high expectations such as enterprises and institutions, public security, police and army.
Group call is a service feature important in the group system, method by reverse traffic channel before under the sector, sharing, support to the group call of big capacity group among a small circle (group can comprise hundreds of user terminal, and these user terminals all are positioned under among a small circle the sector) is provided.Allow interior all users of single user and group to converse simultaneously, user in the group, except speaking, other people must listen to.
In the trunking communication, for the speech frame of travelling carriage from eating dishes without rice or wine to send up, general length is smaller, and by base station system in the transmission course of trunking dispatch server, to before net load, add the transmission head, transmit, can cause bigger network bandwidth waste by mode or other modes of IP, in order to save the Internet resources between base station and the trunking dispatch server, must the message between base station system and the trunking dispatch server be encapsulated again.
Summary of the invention
The technical problem to be solved in the present invention provides the transmission method of voice message in a kind of trunking communication, to save the network bandwidth between base station system and the trunking dispatch server.
In order to address the above problem, the invention provides the transmission method of voice message in a kind of trunking communication, may further comprise the steps:
(a) after trunked call is set up, say that the user begins speech, this user's terminal sends speech frame to affiliated base station system;
(b) after described base station system whenever receives N speech frame, it is packaged into a voice message, sends to trunking dispatch server;
(c) after trunking dispatch server is received voice message, this voice message is transmitted to this says the base station system under all users in the groups of users;
(d) base station system under all users splits into N speech frame with this voice message in the group after receiving voice message, sends to tin user in the group by original order.
Further, said method also can have following characteristics: step (b) and (d) in, in described base station system, be N speech frame is packaged into a voice message, and a voice message is splitted into N speech frame by base station controller or cluster client end.
Further, said method also can have following characteristics: in the step (b), described base station controller adds the packet head before N speech frame when the encapsulation voice message, and then adds the transmission head.
Further, said method also can have following characteristics: described packet head comprises: say user ID, frame number and frame number; Described transmission head comprises: generic route encapsulation head and IP head.
Further, said method also can have following characteristics: in the described step (d), after saying in the group that the base station controller in the base station system receives voice message under the user, as the user terminal of listening is arranged in the service range, again this voice message is split into N speech frame, by original order speech frame is sent to the user terminal of listening in the service range separately by base station transceiver.
Further, said method also can have following characteristics: the span of described N is between 2 and 20.
Further, said method also can have following characteristics: described method is applied to the trunked communication system of CDMA standard.
Another technical problem that the present invention will solve provides a kind of voice message form in trunking communication, adopts this kind message format transferring voice, can save the network bandwidth between base station system and the trunking dispatch server, increases network utilization.
In order to address the above problem, the invention provides a kind of voice message form in trunking communication, this voice message transmits between base station system and trunking dispatch server, comprise transmission head, packet head and speech data part, described transmission head includes transmission means information, described packet head comprises user and speech data information, and described speech data partly comprises a plurality of speech frames of arranging sequentially.
Further, above-mentioned voice message form also can have following characteristics: described transmission head comprises IP head and GRE head.
Further, above-mentioned voice message form also can have following characteristics: described packet head comprises user ID, speech frame sequence number and speech frame number.
Further, above-mentioned voice message form also can have following characteristics: described speech data partly comprises 2～20 speech frames.
As from the foregoing, the present invention in the time delay that guarantees voice simultaneously, saves the network bandwidth effectively by to saying that the user's voice frame encapsulates.If each speech frame transmits, network utilization is 39.6%, in the process of transmission, seriously wasted the network bandwidth, and the transmission means that 4 speech frames are packaged together, network utilization is 71.7%, can save the network bandwidth between base station system and the trunking dispatch server well, have great commercial value.
Summary of drawings
Fig. 1 is an embodiment of the invention trunked communication system schematic network structure;
Fig. 2 is the transmission method schematic diagram of voice message in the embodiment of the invention trunking communication;
Fig. 3 is the form of voice message in the embodiment of the invention trunking communication.
Better embodiment of the present invention
Technical scheme main points of the present invention are: after base station system receives the user's voice message of speaking, be not between base station system and trunking dispatch server, to transmit at once, but after receiving the user's that speaks N message, be packaged together, and then transmit, thereby reach the purpose of saving the network bandwidth between base station system and the trunking dispatch server.
Fig. 1 is a kind of network structure based on the group system that relates to code division multiple access CDMA (access of Code DivisionMultiple Access code division multiple access) standard of the embodiment of the invention, relate to (PTT Dispatch Server by PDS, trunking dispatch server), PDC (PTT Dispatch Client, cluster client end), BS (Base Station base station system, comprise BSC (Base StationController, base station controller) and BTS (Base-station Transceiver System, base station transceiver)), the group system network that MS (Mobile Station, travelling carriage is also referred to as terminal) forms.
During Fig. 2 specific implementation, PDC is placed on BSC, also can be built in BSC, and PDC is the mode that is built in BSC in this example.In example of the present invention, MS1, MS2 and MS3 belong to same group, and MS1 and MS2 are in the coverage of BTS1, and MS3 is in the coverage of BTS2, and BSC1/PDC1 links to each other with PDS by router and internet with BSC2/PDC2.For the digital cluster system based on CDMA, its speech frame transmitting time of eating dishes without rice or wine is 20ms, in the base station system side 4 speech frames (N=4) is packaged into a voice message in this example and transmits, and N also can be arranged to other numerical value.
Fig. 2 shows the flow process of transmission method of the voice message of present embodiment, may further comprise the steps:
Owing to say that it is the formula of having a rest temporarily that the user talks, in N speech frame, there are some to comprise voice messaging, some may be that the sky frame is (when the user is silent, the frame that travelling carriage sends to the base station), no matter whether comprise voice messaging, its cumulative total is 4 o'clock, base station system just answers trunking dispatch server to send, to guarantee the time delay of voice.
PDS receives voice message, simultaneously to PDC1 and PDC2 distribution voice message, and following steps 204～206 and step 207～209th, concurrent.
If have only the user at BSC1, PDS still can send out voice message to BSC1/PDC1, and BSC1 can determine who is to say the user, and can not issue the user.
Follow-up speech frame, as speech frame 5～8,9～12 ... or the like, per 4 is one group, to send to terminal with speech frame 1～4 identical mode.
Fig. 3 shows the form of the voice message that uses in the present embodiment trunking communication.The form of this voice message is meant the form that transmits in base station system and trunking dispatch server.
As shown in the figure, this voice message comprises transmission head, packet head and N speech data.Wherein:
The transmission head is determined by transmission means, can be IP transmission means or other transmission meanss, adopts IP and GRE (Generic Routing Encapsulation as this example, generic route encapsulation) mode is transmitted, the transmission head comprises IP head and GRE head, and IP is a bottom, and GRE is the upper strata.But also can adopt other transmission means and corresponding transmission head.
The packet head comprises the relevant information of speech data, and this example comprises: IMSI (International Mobile Subscriber Identification Number, international mobile subscriber identity), frame number and the frame number of saying the user; The content of packet head can be set by manufacturer oneself, as adopts other the user ID of saying, replaces IMSI as ESN.
Speech data comprises a plurality of speech frames of arranging sequentially, specifically referring to embodiments of the invention for saying user's voice.
The present invention in the time delay that guarantees voice, saves the network bandwidth by to saying that the user's voice frame encapsulates effectively.In order to save the network bandwidth effectively, and guarantee voice delay time, should determine that for the value of N the value of N is big more according to the application of reality, the saving bandwidth is high more, but voice delay time is big more; The value of N is few more, and the saving bandwidth is few more, but voice delay time is more little, and the value of N is general recommends 2 to 20.
From top example as can be known, in group system based on CDMA, the length of the speech frame of every 20ms is 21Byte, and the IP head is 20Byte, the GRE head is 12Byte, if each speech frame transmits, network utilization is 39.6%, in the process of transmission, seriously wasted the network bandwidth, and the transmission means that 4 speech frames are packaged together, network utilization is 71.7%, can save the network bandwidth between base station system and the trunking dispatch server well, has great commercial value.
Certainly, the present invention also can have other various embodiments, and under the situation that does not deviate from spirit of the present invention and essence thereof, those of ordinary skill in the art are when making various corresponding changes and distortion according to the present invention, in the group system that is applied to different systems, also can use above flow process.These corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.
For example,, can be responsible for N speech frame is packaged into voice message, perhaps voice message be splitted into N speech frame by BSC for the base station system BSC/PDC among the embodiment.But also can be finished by PDC, be two kinds of concrete modes that realize.
Industrial applicibility
The present invention in the time delay that guarantees voice simultaneously, saves the network bandwidth effectively by to saying that the user's voice frame encapsulates.If each speech frame transmits, network utilization is 39.6%, in the process of transmission, seriously wasted the network bandwidth, and the transmission means that 4 speech frames are packaged together, network utilization is 71.7%, can save the network bandwidth between base station system and the trunking dispatch server well, have great commercial value.
Claims (8)
1. the transmission method of voice message in the trunking communication may further comprise the steps:
(a) after trunked call is set up, say that the user begins speech, this user's terminal sends speech frame to affiliated base station system;
(b) after described base station system whenever receives N speech frame, it is packaged into a voice message, sends to trunking dispatch server;
(c) after trunking dispatch server is received voice message, this voice message is transmitted to this says the base station system under all users in the groups of users;
(d) base station system under all users splits into N speech frame with this voice message in the group after receiving voice message, sends to tin user in the group by original order.
2. the method for claim 1, it is characterized in that, step (b) and (d) in, in described base station system, be N speech frame is packaged into a voice message, and a voice message is splitted into N speech frame by base station controller or cluster client end.
3. method as claimed in claim 2 is characterized in that, in the step (b), described base station controller adds the packet head before N speech frame when the encapsulation voice message, and then adds the transmission head.
4. method as claimed in claim 3 is characterized in that, described packet head comprises: say user ID, frame number and frame number; Described transmission head comprises: generic route encapsulation head and IP head.
5. the method for claim 1, it is characterized in that, in the described step (d), after saying in the group that the base station controller in the base station system receives voice message under the user, as the user terminal of listening is arranged in the service range, again this voice message is split into N speech frame, by original order speech frame is sent to the user terminal of listening in the service range separately by base station transceiver.
6. the method for claim 1 is characterized in that, the span of described N is between 2 and 20.
7. the method for claim 1 is characterized in that, described method is applied to the trunked communication system of CDMA standard.
8. method as claimed in claim 3 is characterized in that, described transmission head includes transmission means information, and described packet head comprises user and speech data information, and described speech data partly comprises a plurality of speech frames of arranging sequentially.
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 |
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| Publication Number | Publication Date |
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| CN101502142A CN101502142A (en) | 2009-08-05 |
| CN101502142B true 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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| CN (1) | CN101502142B (en) |
| WO (1) | WO2008028316A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Families Citing this family (2)
| 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 |
| 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 |
Citations (3)
| 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 |
| CN1547832A (en) * | 2001-07-13 | 2004-11-17 | �����ɷ� | Efficient CDMA one-to-many service |
| CN1585529A (en) * | 2004-06-12 | 2005-02-23 | 中兴通讯股份有限公司 | Method for realizing speech buffer storage in digital cluster system |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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
Patent Citations (3)
| 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 |
| CN1547832A (en) * | 2001-07-13 | 2004-11-17 | �����ɷ� | Efficient CDMA one-to-many service |
| CN1585529A (en) * | 2004-06-12 | 2005-02-23 | 中兴通讯股份有限公司 | Method for realizing speech buffer storage in digital cluster system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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| Publication number | Publication date |
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| CN101502142A (en) | 2009-08-05 |
| WO2008028316A1 (en) | 2008-03-13 |
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