CN101119269B - Method for wireless core network to transmit intercommunication service and intercommunication function unit - Google Patents
Method for wireless core network to transmit intercommunication service and intercommunication function unit Download PDFInfo
- Publication number
- CN101119269B CN101119269B CN200610036875A CN200610036875A CN101119269B CN 101119269 B CN101119269 B CN 101119269B CN 200610036875 A CN200610036875 A CN 200610036875A CN 200610036875 A CN200610036875 A CN 200610036875A CN 101119269 B CN101119269 B CN 101119269B
- Authority
- CN
- China
- Prior art keywords
- network
- intercommunication
- wireless core
- core network
- intercommunicated
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Data Exchanges In Wide-Area Networks (AREA)
- Telephonic Communication Services (AREA)
Abstract
The present invention discloses a method for the wireless core networks to transmit intercommunicated business. On the direction of transmitting intercommunicated business data, the method mainly comprises: the intercommunicated business data from the wireless end is packed by an intercommunicated function unit according to a link layer protocol supported by the whole net of a wireless core network and then transmits on a transmitting link; the media gateway gathering at the internet protocol load-carrying network segment packs the intercommunicated business data frame from the transmitting link to obtain the intercommunicated business; and the intercommunicated protocol of the internet protocol bearing network according to adapting the intercommunicated business packs the intercommunicated business data and then transmits to the intercommunicated network receiving end. Besides, the present invention also discloses a method and an intercommunicated function unit for the wireless core networks to transmit the intercommunicated businesses along the direction of receiving intercommunicated business data. The present invention avoids the delay because that IWF switches the bearing manner of the intercommunicated business through modulation and demodulation, thereby reducing the delay in the intercommunicated business of the wireless core networks and other networks, and simultaneously improving the reliability of the intercommunicated business.
Description
Technical field
The present invention relates to the interworking service technical field, in particular, the present invention relates to a kind of method and intercommunication function unit of wireless core network to transmit intercommunication service.
Background technology
Along with the core net networks development, the situation of network interworking is more and more, therefore the intercommunication of wireless core network and other network, for example with next generation network (NGN), public switch telephone network (Public SwitchedTelephone Network, PSTN) intercommunication of network, also corresponding, caused widely and paid close attention to.
At present, the intercommunication of the data service of Wideband Code Division Multiple Access (WCDMA) (WCDMA)/global system for mobile communications (GSM)/code division multiple access radio core networks such as (CDMA), facsimile service (FAX) for example, heterogeneous networks adopts different solutions, and the situation that above-mentioned three kinds of networks and other network are carried out the facsimile service intercommunication describes below:
WCDMA and GSM network are with other network interworking fax service data the time, as shown in Figure 1, this figure is the schematic diagram of WCDMA and PSTN intercommunication facsimile service, at first, when carrying out the data service transmission, G3 Fax, alternately voice/automated facsimile business such as (TS61/TS62) is at intercommunication function unit (InterWorking Function, IWF) carry out relaying (Relay), with bearing data service G.711/UP with PSTN network interworking data service, concrete flow chart is with reference to figure 2, and this flow process mainly comprises:
IWF has adopted modulation to carry out the conversion of different bearer mode in the above-mentioned flow process, has therefore introduced bigger delay.
Similar, the IWF of GSM adopts for the Time Division Multiplexing interface and G.711 encodes, then adopt G.711/UP encode back and other network intercommunication services for packet interface, described G.711 transparent transmission mode is meant that (International TelecommunicationUnion Telecommunication Standardization Sector, ITU-T) G.711 code encoding/decoding mode is handled data flow as the encoding and decoding that common voice flow can't harm by ITU Telecommunication Standardization Sector.This G.711 bearing mode take fixedly 64k bandwidth, and be subjected to Internet Protocol (Internet Protocol, IP) the network fluctuation influence is bigger, because the continuous propelling of the whole network IPization, state as a kind of transition, often introduced the multistage IP network in the network,, then can introduce bigger delay/packet loss/mistake bag and wait the problem that influences the business intercommunication quality if WCDMA and GSM network still carry out intercommunication based on existing intercommunication mode.
In addition, the facsimile service that defines among the CDMA is divided into PC (Personal Computer, PC) fax and analogue simulation, as shown in Figure 3, this figure is the schematic diagram of PC fax in the prior art cdma network, PC fax is directly received on the IWF by serial ports, thereby to opposite end network interworking facsimile service, sends the PC of opposite end intercommunication network after by IWF the data business being modulated to; With reference to shown in Figure 4, this figure is the schematic diagram of analogue simulation in the cdma network, concrete processing procedure is equivalent to earlier the signal demodulation of analog facsimile be come out on data terminal, deliver to IWF by wave point, L interface then, no matter carry out Relay by IWF and promptly carry out sending the opposite end intercommunication network to by transmission link after the modulation once more, in a word, be PC fax or analogue simulation, all need IWF that interworking service is carried out modulation, therefore caused bigger time-delay.
To sum up, though above-mentioned prior art can realize the intercommunication of circuit data service between wireless core network and the heterogeneous networks, there is following defective:
At first, because radio core network and heterogeneous networks are when carrying out intercommunication in the prior art, IWF is by the bearing mode of modulation conversion interworking service, and for example modulation of once faxing at the IWF place is when core net is TDM, through pulse code modulation (Pulse Code Modulation, PCM) transmitting after, is that (Asynchronous Transfer Mode is in the time of ATM) for the IP/ asynchronous transfer mode in core net, transmit in the 5msG.711NbUP mode, therefore cause bigger delay;
Secondly, because the definition of the IWF of radio core network is towards PSTN/ISDN in the prior art, do not consider IP network, therefore when containing the network interworking circuit data service of IP network section, be subjected to the IP network influence of fluctuations bigger, then can introduce bigger delay/packet loss/mistake bag and wait the problem that influences the business intercommunication quality.
Summary of the invention
The technical problem that the present invention solves provides the method and the intercommunication function unit of wireless core network to transmit intercommunication service, when avoiding wireless core network and other network intercommunication service, because of IWF changes the delay that the bearing mode of interworking service causes by modulation.
For addressing the above problem, the method for a kind of wireless core network to transmit intercommunication service of the present invention is used for wireless core network and sends the interworking service data direction, and this method mainly comprises:
A) intercommunication function unit will send on the time division multiplexing transmission link after the link layer protocol encapsulation of interworking service data according to the support of wireless core network the whole network from wireless side;
B) tandem in the media gateway decapsulation of Internet Protocol bearer network section from the interworking service Frame of time division multiplexing transmission link to obtain the interworking service data, according to agreement T.38 described interworking service data encapsulation is become T.38 packet, from described T.38 packet, extract the international fax agreement master bag of bearing interconnection business, and described international fax agreement master bag is mapped to sends the intercommunication network receiving end on the Internet Protocol bearer network to.
Wherein, step b further comprises:
Wrap for described international fax agreement master add described T.38 bag sequence number as packet header, described check byte T.38 as the bag tail;
The international fax agreement master bag that has added described packet header, bag tail is mapped to sends the intercommunication network receiving end on the Internet Protocol bearer network to.
Wherein, before step a, also comprise:
The information that Media Gateway Controller transmission indication Echo Cancellation is closed is so that Echo Cancellation is in closed condition.
Wherein, described interworking service is a facsimile service, and the link layer protocol of described wireless core network the whole network support is asynchronous peer-peer protocol.
Correspondingly, the method for a kind of wireless core network to transmit intercommunication service of the present invention is used for wireless core network and receives the interworking service data direction, and this method mainly comprises:
A) media gateway becomes T.38 packet according to agreement T.38 with the interworking service data encapsulation, from described T.38 packet, extract the international fax agreement master bag of bearing interconnection business, and described international fax agreement master bag is mapped to sends the intercommunication network receiving end on the Internet Protocol bearer network to;
Tandem in the media gateway decapsulation of Internet Protocol bearer network section from the Internet Protocol bearer network according to the interworking service Frame of protocol encapsulation T.38 obtaining the interworking service data, and will send on the time division multiplexing transmission link after the link layer protocol encapsulation of described interworking service data according to the support of wireless core network the whole network;
B) the intercommunication function unit decapsulation from the interworking service Frame of the described link layer protocol encapsulation according to the support of wireless core network the whole network of time division multiplexing transmission link to obtain the interworking service data.
Wherein, before step a, also comprise:
The information that Media Gateway Controller transmission indication Echo Cancellation is closed is so that Echo Cancellation is in closed condition.
Wherein, described interworking service is a facsimile service, and described interworking protocol is agreement T.38, and the link layer protocol of described wireless core network the whole network support is asynchronous peer-peer protocol, and described transmission link is the time division multiplexing transmission link.
Correspondingly, a kind of intercommunication function unit of the present invention mainly comprises:
The encapsulation transmitting element is used for when wireless core network sends interworking service, according to the link layer protocol of wireless core network the whole network support the interworking service data encapsulation is become Frame, and described Frame is sent on the transmission link;
The decapsulation receiving element, be used for when wireless core network receives interworking service, reception is from the interworking service Frame of the link layer protocol encapsulation of supporting according to wireless core network the whole network of opposite end intercommunication network, and the described interworking service Frame of decapsulation is to obtain the interworking service data.
Wherein, described interworking service is a facsimile service, and the interworking protocol of described facsimile service is agreement T.38, and the link layer protocol of described wireless core network the whole network support is asynchronous peer-peer protocol, and described transmission link is the time division multiplexing transmission link.
Compared with prior art, the present invention has following beneficial effect:
At first, wireless core network is with other network intercommunication service the time among the present invention, intercommunication function unit is by the bearing mode of encapsulation, decapsulation conversion interworking service, avoided the delay that causes because of the bearing mode of IWF by modulation conversion interworking service, thus the delay when having reduced wireless core network and other network intercommunication service greatly;
Secondly, among the present invention tandem in the media gateway decapsulation of Internet Protocol bearer network section from the interworking service Frame of transmission link to obtain interworking service, and send the intercommunication network receiving end to after encapsulating described interworking service data according to the interworking protocol of the Internet Protocol bearer network of adaptive described interworking service, the Internet Protocol of the adaptive described interworking service of employing sends to the opposite end intercommunication network after interworking service is encapsulated among the present invention, with the interworking service is that facsimile service is an example, adopt T.38 interworking protocol and opposite end intercommunication network interworking service among the present invention, saved transmission bandwidth, improved the ability of anti-IP network influence of fluctuations, the phenomenon of packet loss when having reduced interworking service in the whole network IPization process/mistake bag.
Description of drawings
Fig. 1 is the schematic diagram of WCDMA and PSTN intercommunication facsimile service in the prior art;
Fig. 2 is the schematic flow sheet of WCDMA and PSTN intercommunication facsimile service in the prior art;
Fig. 3 is the schematic diagram of PC fax in the prior art cdma network;
Fig. 4 is the schematic diagram of analogue simulation in the prior art cdma network;
Fig. 5 is three kinds of form schematic diagrames of packet T.38 among the present invention;
Fig. 6 is that wireless core network of the present invention is sending the main schematic flow sheet that transmits the method for interworking service on the interworking service data direction;
Fig. 7 is the schematic diagram of wireless core network of the present invention tandem exchange IPization;
Fig. 8 is the schematic diagram of wireless core network the whole network IPization of the present invention;
Fig. 9 is that wireless core network of the present invention is receiving the schematic flow sheet that transmits the method for interworking service on the interworking service data direction;
Figure 10 is the schematic diagram of intercommunication function unit of the present invention.
Embodiment
Core of the present invention is that wireless core network is with other network intercommunication service the time, intercommunication function unit will send on the transmission link after the link layer protocol encapsulation of interworking service data according to the support of wireless core network the whole network from wireless side, avoided the delay that causes because of the bearing mode of IWF by modulation conversion interworking service, thus the delay when having reduced wireless core network and other network intercommunication service greatly; Correspondingly, be directed to the situation of the whole network segmentation IPization, tandem among the present invention is in the media gateway of Internet Protocol bearer network section, decapsulation from the interworking service Frame of transmission link to obtain interworking service, and send the intercommunication network receiving end to after encapsulating described interworking service data according to the interworking protocol of the Internet Protocol bearer network of adaptive described interworking service, adopt T.38 interworking protocol and opposite end intercommunication network interworking service among the present invention, saved transmission bandwidth, improved the ability of anti-IP network influence of fluctuations, the phenomenon of packet loss when having reduced interworking service in the whole network IPization process/mistake bag has realized the intercommunication of circuit data service in the whole network IPization process.
Need illustrate, the link layer protocol that wireless core network the whole network described in the present invention is supported can be asynchronous peer-peer protocol (Point to Point Protocol, PPP), also can be that other can either guarantee facimile bandwidth, in the time of also can guaranteeing the message shake, send the agreement of idle frame, this idle frame can make echo inhibition (EC) be in closed condition, in addition, tandem among the present invention adopts the interworking protocol of the suitable Internet Protocol bearer network corresponding with interworking service that interworking service is encapsulated in the media gateway of Internet Protocol bearer network section, for interworking service is the situation of facsimile service, described interworking protocol is agreement T.38, below to this T.38 agreement describe.
T.38 agreement is meant (the InternationalTelecommunication Union Telecommunication Standardization Sector by ITU Telecommunication Standardization Sector, ITU-T) agreement T.38, facsimile machine send follow ITU-T T.30 the facsimile signal of agreement carry out transmission manner after being converted into the T.38 fax bag that is fit to the transmission of IP bearer network, can not make amendment to facsimile signal.The advantage of this mode is to have adopted the T.38 bag that relatively is fit to the transmission of IP bearer network that the data business is transmitted, and can save bandwidth, has strengthened occurring the defensive ability/resistance ability of various damages on the IP network by employment mechanism or forward error correction (FEC) technology simultaneously; In addition, according to agreement T.38, T.38 packet is divided into three kinds of forms: transmission control protocol (Transmission Control Protocol, TCP)/TPDU bag (Transport Protocol Data Unit Packet, TPKT), User Datagram Protoco (UDP) (UserDatagram Protocol, UDP)/the UDP transport layer (UDP Transport Layer, UDPTL), RTP (Real-time Transport protocol, RTP) three kinds, as shown in Figure 5.Be specifically described the method that the present invention transmits interworking service below, with the intercommunication facsimile service is example, the link layer protocol (RLP) that described wireless core network the whole network is supported is the async-ppp agreement, described interworking protocol is agreement T.38, mutual energy network receiving end is NGN, IWF is after the T30 message of receiving from wireless side among the present invention, this T30 message can be mapped on the TDM transmission network after according to ppp protocol seal apparatus Frame, avoided the process of modulation, tandem is translated into T.38 bag behind the Frame of media gateway reception from the TDM circuit of Internet Protocol bearer network section, send to gateway in the NGN network by IP network, avoided the process of demodulation, we will be called " T.38Relay " for above-described process, below said process of the present invention be described:
T.38Relay the method for the foundation of mode: a kind of method is for by the signaling plane negotiation mode, and the gateway of consulting to support the T38Relay mode then, carries out the transmission of interworking service data to set up the facsimile data ALT-CH alternate channel passage of promptly faxing; Another kind method is the mode with interior detection, and the process that the mode of surveying in this band is set up the fax passage is a prior art, does not repeat them here, and below the mode by the signaling plane negotiation is described:
In WCDMA, GSM, cdma network, signaling plane is divided into following several situation:
For ISUP (Integrated Service Digital Network UserPart, ISUP) between can by the expansion corresponding information for example bearing capacity (Bearer Capability, BC) or certain cell of BC indicate T.38Relay gateway;
For carrying independent call control protocol (Bearer Independent Call Control protocol, BICC) situation, signaling plane expansion, Mc interface issue USI user service information (USI) information description that T.38 wraps and expand to be represented to use T.38Relay, for the information description of USI:
Among the USI: itc=11001 represents to use T.38Relay, promptly T.38 can be carried on the TDM by async-ppp.
The present invention is described in detail below in conjunction with accompanying drawing.
With reference to figure 6, this figure is wireless core network of the present invention transmits the method for interworking service data on transmission interworking service data direction a main schematic flow sheet, mainly comprises the steps:
Step S11, intercommunication function unit will send on the transmission link after the link layer protocol encapsulation of interworking service data according to the support of wireless core network the whole network from wireless side, during specific implementation, as shown in Figure 7, this figure is the structural representation of wireless core network tandem exchange IPization, base stations control (Base Station Control, BSC) be the TDM interface to MGW1, the inside is an agreement V.110, V.110 on the adaptive (Faxadapter of Fax, FA) agreement, FA message the inside is a protocol massages T.30, and this is after T.30 protocol massages arrives MGW1, and MGW1 is switched directly to IWF, V.110 IWF handles, after the FA protocol header T30 protocol encapsulation become international fax agreement (IFP), and be fitted on the TDM by the PPP encapsulation; In addition, when wireless core network the whole network IPization, as shown in Figure 8, concrete processing procedure is identical with the processing procedure of IWF among Fig. 7;
Step S12, tandem in the media gateway decapsulation of Internet Protocol bearer network section from the interworking service Frame of transmission link to obtain interworking service, and send the intercommunication network receiving end to after encapsulating described interworking service data according to the interworking protocol of the Internet Protocol bearer network of adaptive described interworking service, during specific implementation, as shown in Figure 7, MGW1 brings IWF by TDM PPP/IFP/T30 message is switched directly to the TDM (E1 that links to each other with MGW2, STM-1 etc.) on, MGW2 removes the PPP encapsulation, the T30 message is encapsulated in is mapped on the transmission network on the UDPTL, message after this encapsulation is that IP/UDP/UDPTL/IFP/T30 is the T38 message, during specific implementation, consider among the present invention that facsimile data is included in IFP master's bag, as shown in Figure 7, all be in order to be fit to the additional information that the IP network characteristic increases when transmitting data in other territory, so will T.38 wrap when being mapped on the transmission network at gateway, only IFP master's bag need be shone upon, T.38 the opposite end gateway can regenerate bag fully receiving after IFP master wraps content, and there be not losing of facsimile data information, in addition, the present invention is when carrying out the intercommunication facsimile data, at the situation that may occur packet loss on the IP network, before wrapping, IFP master increases sequence number information, by detecting the phenomenon that mode that whether sequence number saltus step takes place has judged whether to take place packet loss, accordingly, the situation of error code may appear in pin interworking service of the present invention to transmission between the MGW at TDM transmission network two ends the time, employing is after wireless core network end MGW whenever finishes a mapping of T.38 wrapping, can after wrapping data, IFP master insert check byte, the MGW that is positioned at TDM/IP transmission network opposite end finds whether to occur error code by check byte, if error code occurs, then this IFP master being wrapped data loses, guaranteeing the correctness of data, concrete be mapped to data format on the transmission network referring to the UDPTL form shown in 5;
In addition, situation for the whole network IPization, as shown in Figure 8, above-mentioned steps S12 specific implementation process is, MGW1 receives from decapsulation behind the intercommunication message of IWF to remove the encapsulation of PPP, the IFP message is encapsulated on the UDPTL, and then MGW1 outputs to the message format between the MGW2 and is: T30/IFP/UDPTL/UDP/IP, i.e. T38 message; MGW2 directly is transmitted to MGW3 after receiving this T38 message.
In addition, after finishing above-mentioned steps S12, as shown in Figure 7, MGW3 receives from can directly being forwarded to corresponding network element in the interconnection network element of opposite end behind the message of MG2, corresponding network element can be Tandem Gateway/IAD (TG/AG4), also can remove the encapsulation under the IFP, with T30 by V.17 being modulated to the G711 code stream, and then be encapsulated in and send to described TG/AG4 in the RTP message, its form is: T30/ (V.17 modulation) G711/RTP/UDP/IP, at last, by obtaining described interworking service data behind the described interworking service Frame of NGN network receiving end decapsulation according to the interworking protocol encapsulation.
Need illustrate, when the present invention transmits the interworking service data map to the TDM circuit, can adopt frame synchronization mode (for example synchronous HDLC that is suitable for TDM, modes such as async-ppp), to guarantee data synchronization, detect the beginning and the end of data, what adopt at present is the mode of async-ppp, the synchronous head that this async-ppp mode defines is 7E5A (can be configured adjustment according to actual conditions), can send 7E5A at one's leisure, the energy of this signal can be closed EC, and after closing echo inhibition (EC), make it be in closed condition always, during specific implementation, signaling plane is closed EC by 248 interfaces notice MGW, perhaps when the TDM networking, the EC of switch is closed in negotiation according to signaling plane, in addition, (Answer Tone With Amplitude Modem, ANSAM) method of surveying in the band of signal is closed EC to answer signal that can also be by sending anti-phase amplitude modulation(PAM).
With reference to figure 9, this figure is a wireless core network of the present invention, receiving on the interworking service data direction, transmits the schematic flow sheet of the method for interworking service data, and this method mainly comprises:
Step S21, tandem in the media gateway decapsulation of Internet Protocol bearer network section according to the interworking service Frame of the interworking protocol encapsulation of Internet Protocol bearer network to obtain the interworking service data, and will send on the transmission link after the link layer protocol encapsulation of described business datum according to the support of wireless core network the whole network, process during specific implementation is the reverse process of the specific implementation process among the above-mentioned steps S12, repeats no more herein;
Step S22, the intercommunication function unit decapsulation from the described interworking service Frame of the described link layer protocol encapsulation according to the support of wireless core network the whole network of transmission link to obtain the interworking service data, the specific implementation process is the reverse process of specific implementation process among the above-mentioned steps S11, repeats no more herein.
Below the intercommunication function unit among the present invention is described, with reference to Figure 10, this figure is the schematic diagram of intercommunication function unit of the present invention, mainly comprises:
To sum up, the invention described above has reduced the time of V.17 waiting facsimile modulation/demodulation, minimizing that can be bigger postpones, 200-300ms according to a preliminary estimate, in addition, when wireless core network has multistage IP network section, and wireless core network is when the IP intercommunication, also decreases for the requirement of static JitterBuffer, even can not want, therefore this optimal way has reduced time of modulation time and static JitterBuffer altogether.
In addition, the above is a preferred implementation of the present invention, should be understood that; for those skilled in the art; under the prerequisite that does not break away from the principle of the invention, can also make some improvements and modifications, these improvements and modifications also are considered as protection scope of the present invention.
Claims (7)
1. the method for a wireless core network to transmit intercommunication service is used for wireless core network and sends the interworking service data direction, it is characterized in that, comprising:
A) intercommunication function unit will send on the time division multiplexing transmission link after the link layer protocol encapsulation of interworking service data according to the support of wireless core network the whole network from wireless side;
B) tandem in the media gateway decapsulation of Internet Protocol bearer network section from the interworking service Frame of time division multiplexing transmission link to obtain the interworking service data, according to agreement T.38 described interworking service data encapsulation is become T.38 packet, from described T.38 packet, extract the international fax agreement master bag of bearing interconnection business, and described international fax agreement master bag is mapped to sends the intercommunication network receiving end on the Internet Protocol bearer network to.
2. the method for wireless core network to transmit intercommunication service according to claim 1 is characterized in that, described step b further comprises:
Wrap for described international fax agreement master add described T.38 bag sequence number as packet header, described check byte T.38 as the bag tail;
The international fax agreement master bag that has added described packet header, bag tail is mapped to sends the intercommunication network receiving end on the Internet Protocol bearer network to.
3. the method for wireless core network to transmit intercommunication service according to claim 2 is characterized in that, also comprises before step a:
The information that Media Gateway Controller transmission indication Echo Cancellation is closed is so that Echo Cancellation is in closed condition.
4. according to the method for claim 1,2 or 3 described wireless core network to transmit intercommunication service, it is characterized in that described interworking service is a facsimile service, the link layer protocol of described wireless core network the whole network support is asynchronous peer-peer protocol.
5. the method for a wireless core network to transmit intercommunication service is used for wireless core network and receives the interworking service data direction, it is characterized in that comprising:
A) media gateway becomes T.38 packet according to agreement T.38 with the interworking service data encapsulation, from described T.38 packet, extract the international fax agreement master bag of bearing interconnection business, and described international fax agreement master bag is mapped to sends the intercommunication network receiving end on the Internet Protocol bearer network to;
Tandem in the media gateway decapsulation of Internet Protocol bearer network section from the Internet Protocol bearer network according to the interworking service Frame of protocol encapsulation T.38 obtaining the interworking service data, and will send on the time division multiplexing transmission link after the link layer protocol encapsulation of described interworking service data according to the support of wireless core network the whole network;
B) the intercommunication function unit decapsulation from the interworking service Frame of the described link layer protocol encapsulation according to the support of wireless core network the whole network of time division multiplexing transmission link to obtain the interworking service data.
6. the method for wireless core network to transmit intercommunication service according to claim 5 is characterized in that, before step a, also comprises:
The information that Media Gateway Controller transmission indication Echo Cancellation is closed is so that Echo Cancellation is in closed condition.
7. according to the method for claim 5 or 6 described wireless core network to transmit intercommunication service, it is characterized in that described interworking service is a facsimile service, the link layer protocol of described wireless core network the whole network support is asynchronous peer-peer protocol.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610036875A CN101119269B (en) | 2006-08-01 | 2006-08-01 | Method for wireless core network to transmit intercommunication service and intercommunication function unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610036875A CN101119269B (en) | 2006-08-01 | 2006-08-01 | Method for wireless core network to transmit intercommunication service and intercommunication function unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101119269A CN101119269A (en) | 2008-02-06 |
| CN101119269B true CN101119269B (en) | 2010-05-12 |
Family
ID=39055214
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200610036875A Active CN101119269B (en) | 2006-08-01 | 2006-08-01 | Method for wireless core network to transmit intercommunication service and intercommunication function unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101119269B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101478621B (en) * | 2009-01-24 | 2011-12-07 | 华为技术有限公司 | Encoding and decoding negotiation method for ciphered voice call, communication system and device |
| CN104580128A (en) * | 2013-10-29 | 2015-04-29 | 中兴通讯股份有限公司 | Virtual faxing method and device, family gateway and virtual faxing system |
| WO2018141376A1 (en) * | 2017-02-01 | 2018-08-09 | Huawei Technologies Co., Ltd. | System and method for session management in nextgen mobile core networks |
| CN113301668B (en) * | 2019-07-15 | 2023-06-23 | 安科讯(福建)科技有限公司 | E1 point-to-point communication method, terminal and system by means of wireless network |
| CN113961536B (en) * | 2021-12-20 | 2022-04-05 | 浙商银行股份有限公司 | Method for dynamically calculating MD5 value in storage device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1117334A (en) * | 1993-12-03 | 1996-02-21 | L.M.埃利克逊电话股份有限公司 | System and method for varying the transmission rate of facsimile data in a telecommunication system |
| CN1253444A (en) * | 1998-10-29 | 2000-05-17 | 三星电子株式会社 | Wireless data transmission method and mobile terminal and mutual function device used for same |
| CN1360449A (en) * | 2000-12-21 | 2002-07-24 | Lg电子株式会社 | Device and method for transmitting facsimile data in speech system |
| CN1653773A (en) * | 2002-04-03 | 2005-08-10 | 高通股份有限公司 | PPP link negotiation in mobile IP systems |
| CN1708168A (en) * | 2004-06-08 | 2005-12-14 | 华为技术有限公司 | Mobile Terminal login system and method thereof |
| CN1713684A (en) * | 2004-06-27 | 2005-12-28 | 华为技术有限公司 | Facsimile method and system for personnel computer in CDMA communicating system |
-
2006
- 2006-08-01 CN CN200610036875A patent/CN101119269B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1117334A (en) * | 1993-12-03 | 1996-02-21 | L.M.埃利克逊电话股份有限公司 | System and method for varying the transmission rate of facsimile data in a telecommunication system |
| CN1253444A (en) * | 1998-10-29 | 2000-05-17 | 三星电子株式会社 | Wireless data transmission method and mobile terminal and mutual function device used for same |
| CN1360449A (en) * | 2000-12-21 | 2002-07-24 | Lg电子株式会社 | Device and method for transmitting facsimile data in speech system |
| CN1653773A (en) * | 2002-04-03 | 2005-08-10 | 高通股份有限公司 | PPP link negotiation in mobile IP systems |
| CN1708168A (en) * | 2004-06-08 | 2005-12-14 | 华为技术有限公司 | Mobile Terminal login system and method thereof |
| CN1713684A (en) * | 2004-06-27 | 2005-12-28 | 华为技术有限公司 | Facsimile method and system for personnel computer in CDMA communicating system |
Non-Patent Citations (1)
| Title |
|---|
| 全文. |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101119269A (en) | 2008-02-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| AU742114B2 (en) | Enhanced interworking function for interfacing digital cellular voice and fax protocols and internet protocols | |
| US6847632B1 (en) | Method and apparatus for digital cellular internet voice communications | |
| US6882711B1 (en) | Packet based network exchange with rate synchronization | |
| US8098653B2 (en) | Signal-type dependent real-time fax relay | |
| US7746845B2 (en) | Support for fax and modem in SIP/SIP-T networks and the interworking of these networks with ISUP+/BICC | |
| JP2007274692A (en) | Method and apparatus for communicating fax data over internet | |
| CN101119269B (en) | Method for wireless core network to transmit intercommunication service and intercommunication function unit | |
| US9148257B2 (en) | Method and apparatus for reducing delays in a packets switched network | |
| WO2005104463A1 (en) | V.110 over packet networks | |
| EP1192821B1 (en) | Method for transmitting calls over packet network | |
| CN102349283A (en) | Gateway device and method, and communication system | |
| US7228488B1 (en) | System and method for secure communication over packet network | |
| US7263107B1 (en) | Data compression over packet networks | |
| EP1238510B1 (en) | Data call routing on ip connections | |
| CN101695102A (en) | Facsimile method and wireless gateway | |
| CN101472019B (en) | Method, system and device for mutually communicating outband DTMF signaling | |
| NO310999B1 (en) | Fax services in mobile networks | |
| US7395309B1 (en) | Modem activity detection | |
| WO2007109968A1 (en) | A method, gateway and system of data transmission between ip packet networks | |
| CN101330669B (en) | Method and system for implementing transfer of voice to fax business based on CDMA2000 mobile communication system | |
| KR100397470B1 (en) | Voice over IP and voice over ATM interworking system | |
| Bashir et al. | Interworking Real-time FoATM and FoIP | |
| KR19990070787A (en) | Facsimile information transmission device and method using the Internet | |
| MXPA00000258A (en) | Enhanced interworking function for interfacing digital cellular voice and fax protocols and internet protocols |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |