CN101052021A - NGN network based on PSTN network structure - Google Patents
NGN network based on PSTN network structure Download PDFInfo
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- CN101052021A CN101052021A CN200610080537.9A CN200610080537A CN101052021A CN 101052021 A CN101052021 A CN 101052021A CN 200610080537 A CN200610080537 A CN 200610080537A CN 101052021 A CN101052021 A CN 101052021A
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- ngn
- over
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/2854—Wide area networks, e.g. public data networks
- H04L12/2856—Access arrangements, e.g. Internet access
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/66—Arrangements for connecting between networks having differing types of switching systems, e.g. gateways
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/10—Architectures or entities
- H04L65/102—Gateways
- H04L65/1023—Media gateways
- H04L65/1026—Media gateways at the edge
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/10—Architectures or entities
- H04L65/102—Gateways
- H04L65/1033—Signalling gateways
- H04L65/1036—Signalling gateways at the edge
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
Abstract
The method comprises: setting up a media gateway (MG) into time division multiplexing (TDM) network supporting IP over E1 interface in PSTN network; the downlink of said is connected to the access user and uplink of said MG is connected to the IP over E1 interface, and accesses the IP network through TDM transmission network. The invention uses the MG supporting IP over E1 interface to replace the exchanger node or far end switching module and far end access module so as to integrate the PSTN network into NGN network without changing the original TDM transmission network. By the invention users of PSTN can access NGN network and get the services of NGN network.
Description
Technical field
The present invention relates to communication technique field, relate in particular to a kind of NGN network based on the PSTN net structure.
Background technology
PSTN (public switched telephone network (PSTN)) network is the fixed telecommunication business network of structure of having levels, usually form by the switch of different stage, can also be connected with remote switching module, far-end access module, V5 Access Network, WLL (wireless local loop), the PBX network equipments such as (Private Branch Exchange PBXs) under the switch.Be connected by transmission network between switch and the described network equipment, comprise direct-connected or connect by the transmission network that transmission equipment constitutes based on E1, T1, SDH (SDH (Synchronous Digital Hierarchy)) or SONET (synchronous optical network) technology based on TDM (time division multiplexing) technology.
The NGN network is based on the IP technology, is the network that control separates with carrying.For the existing user of PSTN network, comprise: users such as POTS (Plain Old Telephone Service)/ISDN (integrated services digital network), PBX, V5 Access Network, WLL, or, adopt the mode of MGC+MG to insert NGN (next generation network) network usually from the user of other PSTN networks.Wherein MGC (media gateway controlling) has the CCF of handling PSTN user; MG (media gateway) is used for converting PSTN user's media business stream to IP-based bear format from the bear format based on the TDM technology, thus with the NGN network in other user's intercommunications.
Along with the development and progress of technology, the PSTN network will be progressively to the evolution of NGN network.Prior art by the newly-increased IP network of the method for newly-increased router and/or data transmission network, and directly connects gateway to newly-increased IP network when the PSTN network rebuilding is become the NGN network.
By above-mentioned narration as can be known, because IP network generally is made of router and data transmission network, newly-increased IP network generally means discarded or changes existing TDM transmission network, causes the original investment loss of operator, thereby increases operator's cost.
Summary of the invention
The object of the present invention is to provide a kind of NGN network based on the PSTN net structure.
The objective of the invention is to be achieved through the following technical solutions:
A kind of NGN network based on the PSTN net structure, comprise: the media gateway MG that supports IP over E1 interface is set in the time division multiplexing tdm network in the PSTN network, described MG inserts the user downwards, and the IP over E1 interface that makes progress out inserts IP network through the TDM transmission network.
Described TDM network and IP network border are provided with the router of supporting IP over E1 interface, and the IP over E1 that is used to terminate connects; Or,
Be provided with the MG that supports IP over E1 interface and route forwarding function, the IP over E1 that is used to terminate connects.
The MG of one or more support route forwarding functions is set between described MG and IP network.
Described MG utilizes compressed media coded format media stream.
Described MG utilizes the vacant bandwidth of compression as redundant route, evades the fault of TDM transmission network and forward node.
Media data flow adopts the form of IP bag when the TDM transmission over networks, be carried on the TDM relaying time slot and transmit.
Media data flow adopts the form of MPLS bag when the TDM transmission over networks, make Media Stream directly be carried on MPLS and go up transmission.
Media data flow is when the TDM transmission over networks, and Media Stream is carried on upward transmission of MPLS with the form of IP bag.
When TDM transmission over networks Media Stream, packet is carried on the digital circuit based on time-division multiplex technology.
As seen from the above technical solution provided by the invention, the present invention utilizes the MG that supports IP over E1 interface to replace telephone net node in the PSTN network or remote switching module, far-end access module, realized in not newly-increased IP network, do not changed on the basis of existing TDM transmission network, the PSTN network rebuilding has been become the part of NGN network.On the basis of reusing existing network infrastructure, reducing investment outlay, the user can be inserted the NGN network, enjoy the miscellaneous service of NGN network.
Description of drawings
Fig. 1 is a kind of embodiment networking of the method for the invention schematic diagram;
Fig. 2 is for being provided with a plurality of MG networking schematic diagrames on MG and the TDM border.
Embodiment
Core concept of the present invention provides a kind of NGN network based on the PSTN net structure, telephone net node in the MG replacement PSTN network of utilization support IP over E1 interface or remote switching module, far-end access module, can the PSTN network rebuilding be become the NGN network not increasing IP network newly, not changing on the basis of existing TDM transmission network.
The invention provides a kind of NGN network based on the PSTN net structure, the improved networking of its a kind of embodiment as shown in Figure 1, in the existing TDM network of PSTN network, MG is set, described MG supports IP over E1 interface, this MG inserts the user of POTS/ISDN, PBX, V5 Access Network, WLL Access Network or other types downwards, the IP over E1 interface that makes progress out inserts IP network through the TDM transmission network.Realize the calling of IP network is controlled by MGC.
On the border of TDM network and IP network, the router of supporting IP over E1 interface can be set, be used for taking out the IP bag from TDM relaying time slot, transmit to IP network, thereby termination IP over E1 connects.
On the border of described TDM network and IP network, also can utilize and support IP over E1 and exist the MG that is connected to transmit with IP network, this moment, this MG need support route forwarding function.
Between the router or MG of supporting IP over E1 interface on MG and the TDM border, a plurality of MG can be set carry out the Media Stream forwarding, as shown in Figure 2, the MG of described centre also needs to support route forwarding function.
Media data flow can adopt the form of IP bag when the TDM transmission over networks, it is carried on the TDM relaying time slot and transmits.
When TDM transmission over networks Media Stream, except that the bear format of using VoIP over E1, also can pass through VoMPLS over E1, or the transmission of the bear format of VoIP over MPLS over E1.As the form that adopts MPLS to wrap, Media Stream directly is carried on the MPLS, i.e. the VoMPLS form.Or Media Stream is carried on the MPLS with the form of IP bag, i.e. the VoIPoMPLS form.Insert user's MG, the router that reaches the IP network border or the function that MG need support LER among the MPLS (tag edge router) equipment this moment; Middle MG need support the function of LSR in the MPLS network (LSR) equipment.
When TDM transmission over networks Media Stream, the packet of VoIP, VoMPLS, VoMPLSoIP equivalent-load form also can be carried on T1, SDH, SONET or other digital circuits based on time-division multiplex technology.
Because MG can realize media data flow is compressed, therefore when media stream, can adopt the compression coding and decoding form, media data is compressed, be compressed into the G.729 voice flow of coded format as voice flow with the pcm encoder form, media data flow is when the TDM transmission over networks, taking of bandwidth can significantly reduce, for example, switch that can be traditional relatively when adopting compressed encoding form is G.729 saved the 37Kbps bandwidth, if the router or the MG that insert on MG and the NGN network boundary support the compression coding and decoding form, then occupied bandwidth can further be saved about 52Kbps.
Under the situation that bandwidth occupancy significantly reduces, vacant bandwidth can be used for redundant route, utilizes redundant route can evade the fault of TDM transmission network and forward node, improves reliability.For example, insert MG and can dispose two or more route simultaneously, arrive different NGN network boundary router or MG respectively.If, can use other route instead, improve the reliability of network because the route that TDM transmission network or border router or MG failure and other reasons cause using goes wrong.
In sum, the present invention utilizes the MG that supports IP over E1 interface to replace telephone net node in the PSTN network or remote switching module, far-end access module, realized in not newly-increased IP network, do not changed on the basis of existing TDM transmission network, the PSTN network rebuilding has been become the part of NGN network.On the basis of reusing existing network infrastructure, reducing investment outlay, the user can be inserted the NGN network, enjoy the miscellaneous service of NGN network.
The above; only for the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.
Claims (9)
1, a kind of NGN network based on the PSTN net structure, it is characterized in that, comprise: the media gateway MG that supports IP over E1 interface is set in the time division multiplexing tdm network in the PSTN network, described MG inserts the user downwards, the IP over E1 interface that makes progress out inserts IP network through the TDM transmission network.
2, a kind of NGN network based on the PSTN net structure as claimed in claim 1 is characterized in that, described TDM network and IP network border are provided with the router of supporting IP over E1 interface, and the IP over E1 that is used to terminate connects; Or,
Be provided with the MG that supports IP over E1 interface and route forwarding function, the IP over E1 that is used to terminate connects.
3, a kind of NGN network based on the PSTN net structure as claimed in claim 1 or 2 is characterized in that, the MG of one or more support route forwarding functions is set between described MG and IP network.
4, a kind of NGN network based on the PSTN net structure as claimed in claim 1 is characterized in that described MG utilizes compressed media coded format media stream.
5, a kind of NGN network based on the PSTN net structure as claimed in claim 4 is characterized in that, described MG utilizes the vacant bandwidth of compression as redundant route, evades the fault of TDM transmission network and forward node.
As claim 1,4 or 5 described a kind of NGN networks, it is characterized in that 6, media data flow adopts the form of IP bag when the TDM transmission over networks, be carried on the TDM relaying time slot and transmit based on the PSTN net structure.
As claim 1,4 or 5 described a kind of NGN networks, it is characterized in that 7, media data flow adopts the form of MPLS bag when the TDM transmission over networks, make Media Stream directly be carried on MPLS and go up transmission based on the PSTN net structure.
As claim 1,4 or 5 described a kind of NGN networks based on the PSTN net structure, it is characterized in that 8, media data flow is when the TDM transmission over networks, Media Stream is carried on upward transmission of MPLS with the form of IP bag.
As claim 1,4 or 5 described a kind of NGN networks, it is characterized in that 9, when TDM transmission over networks Media Stream, packet is carried on the digital circuit based on time-division multiplex technology based on the PSTN net structure.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610080537.9A CN101052021A (en) | 2006-05-15 | 2006-05-15 | NGN network based on PSTN network structure |
| PCT/CN2006/003247 WO2007131398A1 (en) | 2006-05-15 | 2006-12-01 | Ngn network based on pstn network |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610080537.9A CN101052021A (en) | 2006-05-15 | 2006-05-15 | NGN network based on PSTN network structure |
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| Publication Number | Publication Date |
|---|---|
| CN101052021A true CN101052021A (en) | 2007-10-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200610080537.9A Pending CN101052021A (en) | 2006-05-15 | 2006-05-15 | NGN network based on PSTN network structure |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN101052021A (en) |
| WO (1) | WO2007131398A1 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101971692A (en) * | 2007-12-20 | 2011-02-09 | 艾利森电话股份有限公司 | Assignment and handover in a radio communication network |
| CN101610326B (en) * | 2009-07-09 | 2012-07-04 | 广州广哈通信有限公司 | Method and system for simultaneously supporting voice and IP communication on E1 circuit |
| WO2012167553A1 (en) * | 2011-11-15 | 2012-12-13 | 华为技术有限公司 | Method and device for determining time slot configuration in time division modulation (tdm) transmission |
| CN103167195A (en) * | 2013-04-10 | 2013-06-19 | 烽火通信科技股份有限公司 | Communication system for supporting VOIP (voice over internet protocol) and PSTN (public switched telephone network) integration |
| CN107493401A (en) * | 2016-06-12 | 2017-12-19 | 中兴通讯股份有限公司 | Line status processing method and processing device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1460860A1 (en) * | 2003-03-19 | 2004-09-22 | Siemens Aktiengesellschaft | Method, system and apparatus for managing bearer connections in a telecommunications network |
| CN100382544C (en) * | 2003-09-05 | 2008-04-16 | 华为技术有限公司 | Method for realizing transform of conventional telephone exchange network to younger generation network and transient network |
-
2006
- 2006-05-15 CN CN200610080537.9A patent/CN101052021A/en active Pending
- 2006-12-01 WO PCT/CN2006/003247 patent/WO2007131398A1/en active Application Filing
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101971692A (en) * | 2007-12-20 | 2011-02-09 | 艾利森电话股份有限公司 | Assignment and handover in a radio communication network |
| CN101610326B (en) * | 2009-07-09 | 2012-07-04 | 广州广哈通信有限公司 | Method and system for simultaneously supporting voice and IP communication on E1 circuit |
| WO2012167553A1 (en) * | 2011-11-15 | 2012-12-13 | 华为技术有限公司 | Method and device for determining time slot configuration in time division modulation (tdm) transmission |
| US8542701B2 (en) | 2011-11-15 | 2013-09-24 | Huawei Technologies Co., Ltd. | Method and device for determining timeslot configuration in TDM transmission |
| CN103167195A (en) * | 2013-04-10 | 2013-06-19 | 烽火通信科技股份有限公司 | Communication system for supporting VOIP (voice over internet protocol) and PSTN (public switched telephone network) integration |
| CN103167195B (en) * | 2013-04-10 | 2016-01-20 | 烽火通信科技股份有限公司 | A kind of communication system supporting VOIP and the PSTN network integration |
| CN107493401A (en) * | 2016-06-12 | 2017-12-19 | 中兴通讯股份有限公司 | Line status processing method and processing device |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2007131398A1 (en) | 2007-11-22 |
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Open date: 20071010 |