CN102045871B - Local switching communication method and system - Google Patents
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- CN102045871B CN102045871B CN200910207581.5A CN200910207581A CN102045871B CN 102045871 B CN102045871 B CN 102045871B CN 200910207581 A CN200910207581 A CN 200910207581A CN 102045871 B CN102045871 B CN 102045871B
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- 238000004891 communication Methods 0.000 title claims abstract description 146
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- 230000008569 process Effects 0.000 claims abstract description 14
- 230000002452 interceptive effect Effects 0.000 claims abstract description 7
- 230000004044 response Effects 0.000 claims description 6
- 238000007599 discharging Methods 0.000 claims description 2
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- 230000005540 biological transmission Effects 0.000 description 4
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0055—Transmission or use of information for re-establishing the radio link
- H04W36/0069—Transmission or use of information for re-establishing the radio link in case of dual connectivity, e.g. decoupled uplink/downlink
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/08—Reselecting an access point
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/10—Reselecting an access point controller
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Abstract
In order to simplify speech data conveying flow in a communications system, the present invention proposes a kind of local switching communication method, comprise the following steps: Signalling exchange is carried out with corresponding base station controller BSC respectively in the first base station and the second base station, to set up the first corresponding communication port, wherein, BSC obtains the communication information of the first base station and the communication information of the second base station in signalling interactive process; The communication information of the second base station is sent to the first base station by the BSC corresponding to the first base station, and the communication information of the first base station is sent to the second base station by the BSC corresponding to the second base station; And according to the communication information of the first base station and the communication information of the second base station, the first base station by setting up second communication passage between IP network and the second base station, and discharges the first communication port.In addition, the invention allows for a kind of local switching communication system.
Description
Technical field
The present invention relates to the communications field, more specifically, relate to a kind of local switching communication method and system.
Background technology
Along with GSM mobile communications network is more and more ripe, existing technology is more and more stable, voice switching portion in communication process, the thinking of thinking habit carries out at MSC (MobileSwitching Center) or BSC (Base Station Controller), along with base station uses IP (Internet Protocol) network more and more general as connecting link with between BSC, and use satellite environment as the use of the interconnection network between base station and BSC, the transmission link between base station and BSC is become increasingly complex.For the transmission of speech data, bring a lot of adverse influence, time delay, shake and packet loss etc.
Original exchange of speech mode
In a communication process, the process of exchange of speech illustrates for the mobile phone communication of two under same BSC.Refer to accompanying drawing 1,2.
Chain of command:
Mobile phone is to network request channel;
Network side has resource to use, to handset allocation signaling dedicated channel;
After mobile phone is normally linked into the signaling dedicated channel that network side distributes, network side continues distribution service channel to mobile phone;
After mobile phone is normally linked in Traffic Channel, network side issues a link message to mobile phone;
After mobile phone receives the connection message of network side, respond one and connect confirmation, the control Job readiness before voice call completes;
Service surface:
Up:
The speech data of mobile phone passes to source base station;
Speech data is passed to source BSC by source base station;
Speech data is passed to MSC by source BSC;
Descending:
MSC receives the speech data transmitted of target BS C (following source BSC to be same BSC) here, and this speech data is mail to source BSC;
Speech data is sent to source base station by source BSC;
These speech datas are mail to mobile phone by source base station again.
In this process, speech data sends out from mobile phone, is sent to base station through wireless link, and base station is being sent to BSC by IP network, and BSC passes to MSC through E1 or IP network, carries out a reverse process afterwards, arrives another push-to-talk handset.This period have passed through BSC and base station for twice, the link between BSC and MSC.Prior art Problems existing:
1, speech data takies Abis port band width;
2, speech data will through encoding and decoding process repeatedly;
3, the delay jitter of the IP link of IPAbis mouth, Ater mouth, can have an impact to voice quality.
Need to propose a kind of switching method and system solves these problems, to economize on resources, simple flow, improves quality.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of local switching communication method and system, to simplify speech data conveying flow in a communications system.
According to an aspect of the present invention, propose a kind of local switching communication method, comprise the following steps: Signalling exchange is carried out with corresponding base station controller BSC respectively in the first base station and the second base station, to set up the first corresponding communication port, wherein, BSC obtains the communication information of the first base station and the communication information of the second base station in signalling interactive process; The communication information of the second base station is sent to the first base station by the BSC corresponding to the first base station, and the communication information of the first base station is sent to the second base station by the BSC corresponding to the second base station; And according to the communication information of the first base station and the communication information of the second base station, the first base station by setting up second communication passage between IP network and the second base station, and discharges the first communication port.
Wherein, the first base station and the second base station and respective base station controller BSC carry out Signalling exchange and comprise to set up the first communication port: base station in response is in the request of terminal to base station controller channel request; Base station controller assignment signalling dedicated channel and service-specific channel; And base station controller dynamically active first communication port.
Wherein, the first base station and base station controller BSC carry out Signalling exchange with after setting up the first communication port, also comprise: terminal response is in the link message back link acknowledge message of moving exchanging center MSC.
Wherein, set up second communication passage between the first base station and the second base station and discharge the first communication port and comprise: between the first base station and the second base station, setting up second communication passage; After second communication Path Setup, the first base station and the second base station have reported message to the BSC of correspondence; BSC to send release message to the first communication port of correspondence in response to completing message to the first base station and the second base station, wherein, release message comprises the communication information of the first base station and the communication information of the second base station; And first base station and the second base station receive release message, first communication port corresponding according to release message release also reports release acknowledge message to BSC.
Wherein, after setting up second communication passage, before discharging the first communication port, the first base station and the second base station use two pair receipts mechanism of sending out to carry out voice communication.
Wherein, the first communication port and second communication passage are RTCP Real-time Transport Control Protocol RTP link.
Wherein, the communication information of the first base station and the communication information of the second base station include: peer IP address and port numbers.
Wherein, BSC corresponding to the first base station is same BSC or different B SC with the BSC corresponding to the second base station, when the BSC corresponding to the first base station is different B SC, connect between two BSC to transmit the communication information of the first base station and the communication information of the second base station.
According to a further aspect in the invention, also proposed a kind of local switching communication system, comprise: the first channel Path Setup module, for carrying out Signalling exchange with corresponding base station controller BSC respectively by the first base station and the second base station, to set up the first corresponding communication port, wherein, the first channel Path Setup module comprises communication information acquisition module, for being obtained the communication information of the first base station and the communication information of the second base station in signalling interactive process by BSC; The communication information sends out module mutually, is arranged on BSC, for the BSC by corresponding to the first base station, the communication information of the second base station is sent to the first base station, and by the BSC corresponding to the second base station, the communication information of the first base station is sent to the second base station; And second communication Path Setup module, for setting up second communication passage by IP network according to the communication information of the first base station and the communication information of the second base station between the first base station and the second base station, and discharge the first communication port.
Wherein, the first communication port and second communication passage are RTCP Real-time Transport Control Protocol RTP link.
Wherein, the communication information of the first base station and the communication information of the second base station include: peer IP address and port numbers.
Adopt the method for the invention, following beneficial effect can be arrived:
1, Abis port band width is saved;
2, reduce encoding and decoding speech number of times, reduce speech data time delay;
3, eliminate the delay time and jitter of voice at Abis mouth, Ater mouth, improve voice quality.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, and form a application's part, schematic description and description of the present invention, for explaining the present invention, does not form limitation of the invention.In the accompanying drawings:
Fig. 1 shows the call flow figure of prior art;
Fig. 2 shows the schematic diagram of the call flow of prior art;
Fig. 3 shows the call flow figure according to local switching communication method of the present invention;
Fig. 4 shows the call flow figure more specifically according to local switching communication method of the present invention;
Fig. 5 shows the schematic diagram by flow process according to local switching communication system of the present invention;
Fig. 6 shows the flow chart replaced according to the local switching communication passage of exemplary embodiment of the present invention; And
Fig. 7 shows the block diagram according to local switching communication system of the present invention.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
Propose a kind of new method herein to carry out in this locality to realize exchange of speech---local exchange.So-called local exchange is exactly, when the calling and called both sides called out all same base station or calling and called at the different base station that IP network links time, set up the passage (setting up the service channel of voice transfer between two base stations) that local user face data carry out exchanging between two base stations, after Path Setup, user face data (up-downgoing) is not had to transmit between base station and BSC, the speech data of up-downgoing transmits between two base stations, completely transparent to core net; So just can save TC (Transcoder Units) and Abis, Ater mouth resource, especially under the environment of IPAbis or satellite transmission, for reduction bandwidth occupancy, improving voice quality has good effect.This method realizing voice local exchange newly in this paper, traffic affecting does not normally run.
Fig. 3 shows the call flow figure according to local switching communication method of the present invention.As shown in Figure 3, local switching communication method according to the present invention comprises: Signalling exchange is carried out with corresponding base station controller BSC respectively in the first base station and the second base station, to set up the first corresponding communication port, wherein, BSC obtains the communication information of the first base station and the communication information of described second base station in signalling interactive process; The communication information of the first base station is sent to described second base station by BSC, and the communication information of the second base station is sent to the first base station; And according to the communication information of the first base station and the communication information of the second base station, the first base station by setting up second communication passage between IP network and the second base station, and discharges the first communication port.Also there is same process the second same base station.
Fig. 4 shows the call flow figure more specifically according to local switching communication method of the present invention.As shown in Figure 4:
Chain of command:
Mobile phone is to network request channel;
Network side has resource to use, to handset allocation signaling dedicated channel;
After mobile phone is normally linked into the signaling dedicated channel that network side distributes, network side continues distribution service channel to mobile phone, and when activating to BTS channel, dynamically active voice RTP link;
Voice RTP link and physical channel activate successfully, have activated to BSC reporting channel;
After mobile phone is normally linked in Traffic Channel, network side issues a link message to mobile phone;
After mobile phone receives the connection message of network side, respond one and connect confirmation;
BSC detects that this can carry out local exchange to call, sends local link setup RTP message to two associated base stations, comprises IP address and the port numbers of the opposite end that base station needs are set up in this message;
After base station receives local link setup RTP message, with the peer IP address carried in message and port numbers for target, a newly-built RTP link;
After completing with the RTP link establishment of opposite end, base station reports the message that BSC link establishment completes;
After the local RTP link setup that BSC receives two base stations completes message, the RTP link original to two base stations discharges, containing peer IP address and port numbers in this message;
Base station receives the release message of RTP link, according to IP address and the port numbers of the opposite end of carrying in message, discharges corresponding local RTP link, and reports release acknowledge message to BSC.
Service surface:
Before call starts, a corresponding RTP link is set up respectively with BSC in two base stations, and the RTP link that speech data is still set up when Channel Activation transmits;
Receive BSC set up the RTP link setup message of local exchange after, the RTP link that two base stations start to set up between them;
After RTP link establishment success between two base stations, the RTP link control message that the release that wait BSC issues is original, this time, new RTP link and original RTP link receive the speech data of uplink and downlink simultaneously, simultaneously toward up transmission speech data, but only send on original RTP link at downstream voice data, namely realize two pairs and receive function;
Receive BSC to after the release message of original RTP link, speech data is switched on newly-built RTP link completely, discharges original RTP link, and so far, speech data only transmits, no longer through BSC and MSC between two base stations.
From the schematic diagram shown in Fig. 5, can more be expressly understood that design of the present invention.
Fig. 6 shows the flow chart replaced according to the local switching communication passage of exemplary embodiment of the present invention.Specifically describe as follows:
Base station receives the local exchange RTP link setup message of BSC, the IP address containing base station, opposite end in this message and port numbers, base station according to this message, the voice RTP link that link setup is new;
After voice RTP link is successfully set up with new opposite end in base station, report RTP link setup success message to BSC, at this time, original voice RTP link and new voice RTP link receive up speech data simultaneously, and speech data is sent to corresponding opposite end, for descending, also receive the speech data from opposite end simultaneously, the data received can not be sent mobile phone by just new voice RTP link, and namely realization is two sends out two receipts;
After BSC receives new voice RTP link establishment success message, issue the original voice RTP chain circuit message of release to base station, the IP address containing opposite end in this message and port numbers;
Base station receives release RTP chain circuit message, according to the IP address in message and port numbers, discharge a voice RTP link (voice RTP link originally), another downstream voice data is mail to mobile phone simultaneously, and reporting RTP link Release complete to BSC, local exchange process completes.
In addition, invention further discloses a kind of local switching communication system, comprise: the first channel Path Setup module 701, for carrying out Signalling exchange with corresponding base station controller BSC respectively by the first base station and the second base station, to set up the first corresponding communication port, wherein, the first channel Path Setup module comprises communication information acquisition module, for being obtained the communication information of the first base station and the communication information of the second base station in signalling interactive process by BSC; The communication information sends out module 703 mutually, is arranged on BSC, for the BSC by corresponding to the first base station, the communication information of the second base station is sent to the first base station, and by the BSC corresponding to the second base station, the communication information of the first base station is sent to the second base station; And second communication Path Setup module 705, for setting up second communication passage by IP network according to the communication information of the first base station and the communication information of the second base station between the first base station and the second base station, and discharge the first communication port.
Compared with the mode of traditional exchange of speech, the voice of local exchange no longer through BSC and MSC, but directly transmit between two relevant base stations.So namely, saving BSC follows base station, BSC with the bandwidth of link between MSC, additionally reduces network delay and the shake of voice, improves voice quality.Particularly for using IP network between base station and BSC or using satellite environment to carry out the environment transmitted, the improvement for voice quality can be more obvious.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a local switching communication method, is characterized in that, comprises the following steps:
Signalling exchange is carried out with corresponding base station controller BSC respectively in first base station and the second base station, to set up the first corresponding communication port, wherein, described BSC obtains the communication information of described first base station and the communication information of described second base station in described signalling interactive process;
The communication information of described second base station is sent to described first base station by the BSC corresponding to described first base station, and the communication information of described first base station is sent to described second base station by the BSC corresponding to described second base station; And
According to the communication information of described first base station and the communication information of described second base station, described first base station is by setting up second communication passage between IP network and described second base station, and discharge described first communication port, wherein, BSC corresponding to described first base station is same BSC or different B SC with the BSC corresponding to described second base station, when the BSC corresponding to described first base station is different B SC, connect between two BSC to transmit the communication information of described first base station and the communication information of described second base station.
2. method according to claim 1, is characterized in that, Signalling exchange is carried out with corresponding base station controller BSC respectively in described first base station and the second base station, comprises to set up the first corresponding communication port:
Base station in response is in the request of terminal to described base station controller channel request;
Described base station controller assignment signalling dedicated channel and service-specific channel; And
First communication port described in described base station controller dynamically active.
3. method according to claim 2, is characterized in that, Signalling exchange is carried out with corresponding base station controller BSC respectively in described first base station and the second base station, after setting up the first corresponding communication port, also comprises:
Described terminal response is in the link message back link acknowledge message of moving exchanging center MSC.
4. method according to claim 1, is characterized in that, sets up second communication passage between described first base station and described second base station, and discharges described first communication port and comprise:
Described second communication passage is set up between described first base station and described second base station;
After described second communication Path Setup, described first base station and described second base station have reported message to the described BSC of correspondence;
Described BSC sends release message to described first communication port of correspondence in response to the described message that completes to described first base station and described second base station, wherein, described release message comprises the communication information of described first base station and the communication information of described second base station; And
Described first base station and described second base station receive described release message, described first communication port corresponding according to the release of described release message BSC to correspondence reports release acknowledge message.
5. method according to any one of claim 1 to 4, is characterized in that, after setting up described second communication passage, before discharging described first communication port,
Described first base station and described second base station use two pair receipts mechanism of sending out to carry out voice communication.
6. method according to any one of claim 1 to 4, is characterized in that, described first communication port and described second communication passage are RTCP Real-time Transport Control Protocol RTP link.
7. method according to any one of claim 1 to 4, is characterized in that, the communication information of described first base station and the communication information of described second base station include: peer IP address and port numbers.
8. a local switching communication system, is characterized in that, comprising:
First channel Path Setup module, for carrying out Signalling exchange with corresponding base station controller BSC respectively by the first base station and the second base station, to set up the first corresponding communication port,
Wherein, described first channel Path Setup module comprises communication information acquisition module, for being obtained the communication information of described first base station and the communication information of described second base station in described signalling interactive process by described BSC;
The communication information sends out module mutually, be arranged on described BSC, for the BSC by corresponding to described first base station, the communication information of described second base station is sent to described first base station, and by the BSC corresponding to described second base station, the communication information of described first base station is sent to described second base station, wherein, BSC corresponding to described first base station is same BSC or different B SC with the BSC corresponding to described second base station, when the BSC corresponding to described first base station is different B SC, connect between two BSC to transmit the communication information of described first base station and the communication information of described second base station, and
Second communication Path Setup module, for setting up second communication passage by IP network according to the communication information of described first base station and the communication information of described second base station between described first base station and described second base station, and discharges described first communication port.
9. system according to claim 8, is characterized in that, described first communication port and described second communication passage are RTCP Real-time Transport Control Protocol RTP link.
10. system according to claim 8 or claim 9, it is characterized in that, the communication information of described first base station and the communication information of described second base station include: peer IP address and port numbers.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910207581.5A CN102045871B (en) | 2009-10-23 | 2009-10-23 | Local switching communication method and system |
| PCT/CN2010/074825 WO2011047560A1 (en) | 2009-10-23 | 2010-06-30 | Method and system for local exchange communication |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910207581.5A CN102045871B (en) | 2009-10-23 | 2009-10-23 | Local switching communication method and system |
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| Publication Number | Publication Date |
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| CN102045871A CN102045871A (en) | 2011-05-04 |
| CN102045871B true CN102045871B (en) | 2015-08-12 |
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| CN200910207581.5A Active CN102045871B (en) | 2009-10-23 | 2009-10-23 | Local switching communication method and system |
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| WO (1) | WO2011047560A1 (en) |
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| WO2012149809A1 (en) * | 2011-10-21 | 2012-11-08 | 华为技术有限公司 | Information configuration method, device and system |
| CN102497396B (en) * | 2011-11-30 | 2015-07-22 | 华为技术有限公司 | Communication method, base station, base station controller and mobile switching center |
| WO2016041148A1 (en) * | 2014-09-16 | 2016-03-24 | 华为技术有限公司 | Communication method and device |
| CN107070854A (en) * | 2016-12-09 | 2017-08-18 | 西安华为技术有限公司 | A kind of method of transmitting audio data, equipment and device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1138427C (en) * | 2001-05-30 | 2004-02-11 | 华为技术有限公司 | Phonetic channel exchange method for calling adaptation in mobile communication system |
| CN1138426C (en) * | 2001-05-30 | 2004-02-11 | 华为技术有限公司 | Phonetic channel exchange method for calling adaptation in mobile communication system |
| CN101325795B (en) * | 2007-06-15 | 2011-09-21 | 中兴通讯股份有限公司 | Wireless communication device for local voice exchange |
| JP2009111772A (en) * | 2007-10-30 | 2009-05-21 | Kyocera Corp | Communication terminal, communication system, and communication method of communication terminal |
| CN101291538B (en) * | 2008-06-13 | 2012-07-04 | 华为技术有限公司 | Method for communication exchange in message receiving and sending station of base station, and subsystem of base station |
| CN101702817B (en) * | 2009-11-24 | 2012-09-05 | 中兴通讯股份有限公司 | Switching method and device in local voice exchange |
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2009
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| Publication number | Publication date |
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| WO2011047560A1 (en) | 2011-04-28 |
| CN102045871A (en) | 2011-05-04 |
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