CN101094141A - Method and system for protecting voice channel of access network, and optical line terminal - Google Patents
Method and system for protecting voice channel of access network, and optical line terminal Download PDFInfo
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- CN101094141A CN101094141A CN 200710112470 CN200710112470A CN101094141A CN 101094141 A CN101094141 A CN 101094141A CN 200710112470 CN200710112470 CN 200710112470 CN 200710112470 A CN200710112470 A CN 200710112470A CN 101094141 A CN101094141 A CN 101094141A
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Abstract
The method is used for protecting the telephone channel between the optical line terminal (OLT) and the optical network unit (ONU). It comprises: when the transmission link between OLT and ONU fails, the time slot of exchange network opposite end and the time slot of subscriber circuit corresponding to the telephone channel loaded by said failure transmission link is confirmed; deleting the telephone channel loaded by said failure transmission link; getting the idle time slot between said OLT and ONU.
Description
Technical field
The present invention relates to the access technology of the communications field, particularly a kind of speech channel guard method, system and optical line terminal of Access Network.
Background technology
Usually, the light Access Network comprises near-end node and far-end access node, wherein, near-end node is optical line terminal (OLT, Optical Line Terminal), the far-end access point is optical network unit (ONU, OpticalNetwork Unit), and both connect by transmission link provides communication channel and speech path passage.Wherein, transmission link has multiple, comprising: coaxial cable, user's twisted-pair feeder, optical fiber or microwave link etc.OLT and far-end ONU finish the conversion from SNI (SNI, Service Node Interface) to relevant signaling protocol between the User Network Interface (UNI, User Network Interface) in whole Access Network.
OLT be used to Access Network to provide and local switch between interface, and communicate by letter with the ONU of user side by optical transmission, its function of exchange and user's access with switch separates fully, maintenance and monitoring to self and user side are provided, can directly be placed on the exchange local side, also can be arranged on far-end with local switch.ONU is used to Access Network that the interface of user side is provided, and can insert multiple user terminal, has photoelectric converting function simultaneously and safeguards accordingly and monitoring function.
Fig. 1 is the networking structure figure of existing Access Network.As shown in Figure 1, switch (LE) 101 connects optical line terminal (OLT) 102 by the v5 interface, and this OLT is by connecting a plurality of optical network units (ONU) 103 under many transmission links.As shown in Figure 1, the ONU that OLT 102 connects has n, comprising: ONU1, ONU2 ..., ONUn.
Though; traditional access network equipment generally all has the transmission link more than two; but when certain bar transmission link breaks down; access network equipment is not protected speech channel; if carry speech channel on the transmission link that breaks down; then user's communication will have to interrupt, thereby influence the use of customer service.On the other hand, engineering maintenance the time, need sometimes transmission link dialled and insert, divert from one use to another or operation such as obturation, if just carrying calling on the transmission link of operating, inconvenience will occur, or must stop maintenance work, thereby or must influence customer service by interrupt call.Therefore, engineering maintenance has to carry out in the fewer late into the night or morning at customer call.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of speech channel guard method, system and equipment of Access Network, with the speech channel of carrying on the protection transmission link.
In order to achieve the above object, the invention discloses following technical scheme:
The invention discloses a kind of speech channel guard method of Access Network, be used to protect the speech channel between optical line terminal and the optical network unit, when the transmission link between optical line terminal and the optical network unit breaks down, comprising:
Determine the switching network opposite end time slot of the speech channel correspondence that the described transmission link that breaks down carries and the time slot of subscriber line circuit;
Remove the speech channel of described transmission link carrying of breaking down;
Obtain the idle time slot of described optical line terminal, use the idle time slot that is obtained to rebulid of the speech channel of described switching network opposite end time slot to the time slot of subscriber line circuit to described optical network unit.
In the such scheme, the switching network opposite end time slot of the speech channel correspondence of described definite described transmission link carrying of breaking down and the time slot of subscriber line circuit comprise: obtain the time slot collection that is in connection state on the described transmission link that breaks down; Query call information obtains corresponding to the switching network opposite end time slot of described time slot collection and the time slot of subscriber line circuit.
In the such scheme, the idle time slot that described use is obtained rebulids the speech channel of described switching network opposite end time slot to the time slot of subscriber line circuit, comprise: described optical line terminal continues described switching network opposite end time slot to the speech channel of the idle time slot that is obtained, and notifies described optical network unit; Described optical network unit is by the idle time slot that the obtained speech channel to the time slot of described subscriber line circuit that continues of the notice of described optical line terminal.
The invention discloses a kind of speech channel protection system of Access Network, comprising: optical line terminal and optical network unit, when the transmission link between described optical line terminal and the described optical network unit breaks down,
Described optical line terminal, be used to obtain the time slot collection that is in connection state on the described transmission link that breaks down, determine corresponding to the switching network opposite end time slot of described time slot collection and the time slot of subscriber line circuit, remove described switching network opposite end time slot and concentrate the speech channel of described optical line terminal time slot corresponding and notify described optical network unit to remove speech channel to described time slot; Obtain described optical line terminal to the idle time slot of described optical network unit, set up described switching network opposite end time slot to the speech channel of the idle time slot that is obtained and notify described optical network unit to set up speech channel;
Described optical network unit, be used for removing described time slot and concentrate of the speech channel of described optical network unit time slot corresponding, the speech channel that the idle time slot that is obtained by the notice foundation of described optical network unit arrives the time slot of described subscriber line circuit to the time slot of described subscriber line circuit by the notice of described optical line terminal.
The invention also discloses a kind of optical line terminal, comprising:
First module is used for the detected transmission Link State;
Second module, be used for when described first module detects transmission link and breaks down, obtain the time slot collection that is in connection state on the described transmission link that breaks down, determine corresponding to the switching network opposite end time slot of described time slot collection and the time slot of subscriber line circuit, remove described switching network opposite end time slot is concentrated described optical line terminal time slot corresponding to described time slot speech channel; Obtain the idle time slot of described optical line terminal, set up of the speech channel of described switching network opposite end time slot to the idle time slot that is obtained to optical network unit.
Above-mentioned optical line terminal further comprises: the three module that is used to carry out interacting message; Described second module is further used for, notifying described optical network unit to remove described time slot by described three module after removing described speech channel concentrates the speech channel of described optical network unit time slot corresponding to the time slot of described subscriber line circuit, notifies described optical network unit to set up the speech channel of described idle time slot to the time slot of described subscriber line circuit by described three module after setting up described speech channel.
In sum, adopt after the present invention, under the situation that the part transmission link breaks down, access network equipment can be protected the speech channel of carrying on the transmission link that breaks down, and rebulids the speech channel of switch to the user, thereby makes customer service unaffected.
Description of drawings
Fig. 1 is the networking structure figure of existing Access Network;
Fig. 2 is according to speech channel defencive function building-block of logic in the OLT of the embodiment of the invention;
Fig. 3 is the structure chart according to the Access Network speech channel defencive function of the embodiment of the invention;
Fig. 4 is the speech channel protection process chart according to the embodiment of the invention.
Embodiment
Below in conjunction with accompanying drawing, the embodiment of the invention is elaborated.
Fig. 2 is according to speech channel defencive function building-block of logic in the OLT of the embodiment of the invention.As shown in Figure 2, in the OLT, the speech channel defencive function is realized by following several logic function modules, being comprised: resource management module 201, call processing module 202, message communication module 203 and link detecting module 204.
Wherein, call processing module 202 is obtained the idle time slot that is used to set up new speech channel by resource management module 201, each time slot of inquiring about in the speech channel that obtains the given transmission link bearer (comprising: the time slot on time slot on the local OLT and the far-end ONU), metered call information, speech channel between the assigned timeslot continues/removes, carry out interacting message by message communication module 203 and external equipment (as: ONU), from the information that link detecting module 204 reports, know the transmission link that breaks down.
Fig. 3 is the structure chart according to the Access Network speech channel defencive function of the embodiment of the invention.Equipment shown in Fig. 3 comprises switch shown in Figure 1 101, OLT 102 and ONU 103.Wherein, OLT 102 comprises: be used to transmit and switch between data transmitting device 301, be used to transmit and ONU between data transmitting device 303, be connected the switching network 302 between transmitting device 301 and 303; ONU 103 comprises: be used to transmit and OLT between data transmitting device 304, subscriber line circuit 306, be connected the switching network 305 between transmitting device 304 and the subscriber line circuit 306.
Between this hypothesis OLT 102 and ONU 103, two links (transmission link 1 and transmission link 2) are arranged, and all have communication channel.Below in conjunction with Fig. 3 the processing procedure of setting up a speech channel between OLT under the normal condition 102 and the ONU 103 is described.
At first, user and switch 101 initiated a normal call, switch 101 based on bearer channel connect (BCC, Bearer Channel Connection) agreement send BCC speech channel assignment messages to OLT 102 with notify its for this reason customer call distribute time slot T0.Message communication modules in the OLT 102 are received notification call processing module after this BCC speech channel assignment messages.This call processing module then needs to seek an idle speech channel that begins finally to be connected to through ONU 103 this subscriber line circuit from time slot T0.
This call processing module is obtained inner idle time slot T1 by the resource management module of OLT 102 inside, and finds on the ONU 103 and the corresponding time slot T2 of time slot T1, and wherein, time slot T1 is connected by transmission link 1 with T2.Call processing module in this OLT 102 continue on the switching network time slot T0 to the two-way telephone circuit of T1, and send message by the message communication module to ONU 103, to notify ONU 103 time slot T2 are routed to this subscriber line circuit.
After ONU 103 receives message from OLT 102, find the time slot Tu of corresponding this subscriber line circuit, the time slot T2 that continues is to the two-way telephone circuit of Tu, thereby connects the speech channel that switch arrives subscriber line circuit, the user's passage of representing as dotted line among Fig. 3.Here, T0 can be described as the opposite end time slot of switching network.
At this moment, OLT 102 has write down this call information, the information that mainly comprises speech channel between the user that set up and the switch, such as: the time slot collection of this speech channel (comprising: time slot T2 on time slot T1, the ONU on opposite end time slot T0, the OLT102 of switching network and user side time slot Tu).The speech channel information that this OLT 102 is write down can be recorded in resource management module or call processing module.102 ticket call information of OLT also can save as a call information table.
If the transmission link 1 at this speech channel place breaks down, then OLT 102 and ONU 103 will carry out speech channel protection processing.Fig. 4 is the speech channel protection process chart according to the embodiment of the invention, and below in conjunction with the flow process of Fig. 4, OLT 102 and ONU 103 performed speech channel protections were handled and described when transmission link 1 was broken down.
Link detecting modules in the step 401:OLT 102 detect transmission link 1 and break down, and this fault is reported call processing module in the OLT 102.
Step 402: the call processing module in this OLT 102 is searched the time slot that is in connection state on the transmission link 1 by resource management module, obtains time slot T1; This call processing module is inquired about ticket call information when setting up speech channel before by this time slot T1, obtain the time slot T2 on switching network opposite end time slot T0, the ONU 103 of time slot T1 and the time slot Tu of corresponding subscriber line circuit, these gap informations can be described as the time slot collection that is in connection state on this transmission link 1.
Step 403: the call processing module in this OLT 102 is removed the two-way telephone circuit of time slot T0 to T1, and removes the two-way telephone circuit of time slot T2 to Tu by message communication module notice ONU 103; Afterwards, ONU103 removes the two-way telephone circuit of time slot T2 to Tu.Like this, dotted line is represented among Fig. 3 from time slot T0, through time slot T1 and T2, to the speech channel of time slot Tu with regard to split except.
Here, the call processing module in the OLT 102 also can be further with all the time slot obturations on the transmission link 1 that breaks down.The purpose of this processing is, preventing that these time slots are acquired as idle time slot sets up new speech channel, this be because, fault has taken place in transmission link 1, these time slots can not be used to set up speech channel, if they are used to set up new speech channel, will cause follow-up unnecessary operations, thus the waste resource.
Step 404: the call processing module in this OLT 102 is obtained time slot T2 ' on idle time slot T1 ' and the corresponding ONU 103 thereof from the transmission link 2 again by resource management module, continue time slot T0 to the two-way telephone circuit of T1 ', and by message communication module notice ONU 103 two-way telephone circuit of time slot T2 ' to Tu that continue.
Step 405:ONU 103 continues time slot T2 ' to the two-way telephone circuit of Tu by the notice from OLT 102; like this; solid line is represented among Fig. 3 from time slot T0; through time slot T1 ' and T2 '; speech channel to time slot Tu has just successfully been set up; thereby user session can successfully recover, and the speech channel protection is finished dealing with.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (12)
1, a kind of speech channel guard method of Access Network is used to protect the speech channel between optical line terminal and the optical network unit, it is characterized in that, when the transmission link between described optical line terminal and the optical network unit breaks down, comprising:
Determine the switching network opposite end time slot of the speech channel correspondence that the described transmission link that breaks down carries and the time slot of subscriber line circuit;
Remove the speech channel of described transmission link carrying of breaking down;
Obtain the idle time slot of described optical line terminal, use the idle time slot that is obtained to rebulid of the speech channel of described switching network opposite end time slot to the time slot of subscriber line circuit to described optical network unit.
2, method according to claim 1 is characterized in that, the switching network opposite end time slot of the speech channel correspondence of described definite described transmission link carrying of breaking down and the time slot of subscriber line circuit comprise:
Obtain the time slot collection that is in connection state on the described transmission link that breaks down;
Query call information obtains corresponding to the switching network opposite end time slot of described time slot collection and the time slot of subscriber line circuit.
3, method according to claim 2 is characterized in that, the described time slot collection that is in connection state on the described transmission link that breaks down that obtains comprises:
Judge on the described transmission link that breaks down whether the time slot that is in connection state is arranged,, then obtain the time slot collection that is in connection state on the described transmission link that breaks down if having; Otherwise finish current handling process.
4, method according to claim 2 is characterized in that, the speech channel of the described transmission link carrying of breaking down of described dismounting comprises:
Described optical line terminal is removed described switching network opposite end time slot and is concentrated the speech channel of described optical line terminal time slot corresponding to described time slot, and notifies described optical network unit;
Described optical network unit is removed described time slot by the notice of described optical line terminal and is concentrated the speech channel of described optical network unit time slot corresponding to the time slot of described subscriber line circuit.
5, method according to claim 4 is characterized in that, after the speech channel of removing described transmission link carrying of breaking down, further comprises: all time slots that inaccessible described time slot is concentrated.
6, method according to claim 1 is characterized in that, the described idle time slot that obtains described optical line terminal to described optical network unit comprises:
Judge whether described optical line terminal exists idle time slot to described optical network unit,, then obtain the idle time slot of described optical line terminal to described optical network unit if exist; Otherwise finish current handling process.
7, method according to claim 1 is characterized in that, the idle time slot that described use is obtained rebulids the speech channel of described switching network opposite end time slot to the time slot of subscriber line circuit, comprising:
Described optical line terminal continues described switching network opposite end time slot to the speech channel of the idle time slot that is obtained, and notifies described optical network unit;
Described optical network unit is by the idle time slot that the obtained speech channel to the time slot of described subscriber line circuit that continues of the notice of described optical line terminal.
8, a kind of speech channel protection system of Access Network comprises: optical line terminal and optical network unit, it is characterized in that, and when the transmission link between described optical line terminal and the described optical network unit breaks down,
Described optical line terminal, be used to obtain the time slot collection that is in connection state on the described transmission link that breaks down, determine corresponding to the switching network opposite end time slot of described time slot collection and the time slot of subscriber line circuit, remove described switching network opposite end time slot and concentrate the speech channel of described optical line terminal time slot corresponding and notify described optical network unit to remove speech channel to described time slot; Obtain described optical line terminal to the idle time slot of described optical network unit, set up described switching network opposite end time slot to the speech channel of the idle time slot that is obtained and notify described optical network unit to set up speech channel;
Described optical network unit, be used for removing described time slot and concentrate of the speech channel of described optical network unit time slot corresponding, the speech channel that the idle time slot that is obtained by the notice foundation of described optical network unit arrives the time slot of described subscriber line circuit to the time slot of described subscriber line circuit by the notice of described optical line terminal.
9, system according to claim 8, it is characterized in that, described optical line terminal is further used for after the described switching network of dismounting opposite end time slot is concentrated the speech channel of described optical line terminal time slot corresponding to described time slot, all time slots that inaccessible described time slot is concentrated.
10, a kind of optical line terminal is characterized in that, comprising:
First module is used for the detected transmission Link State;
Second module, be used for when described first module detects transmission link and breaks down, obtain the time slot collection that is in connection state on the described transmission link that breaks down, determine corresponding to the switching network opposite end time slot of described time slot collection and the time slot of subscriber line circuit, remove described switching network opposite end time slot is concentrated described optical line terminal time slot corresponding to described time slot speech channel; Obtain the idle time slot of described optical line terminal, set up of the speech channel of described switching network opposite end time slot to the idle time slot that is obtained to optical network unit.
11, terminal according to claim 10 is characterized in that, further comprises: the three module that is used to carry out interacting message;
Described second module is further used for, notifying described optical network unit to remove described time slot by described three module after removing described speech channel concentrates the speech channel of described optical network unit time slot corresponding to the time slot of described subscriber line circuit, notifies described optical network unit to set up the speech channel of described idle time slot to the time slot of described subscriber line circuit by described three module after setting up described speech channel.
12, terminal according to claim 11 is characterized in that, described second module comprises:
First submodule is used to manage time interval resource;
Second submodule, be used for handling and call out, obtain the time slot collection that is in connection state on the described transmission link that breaks down, determine by described first submodule corresponding to the switching network opposite end time slot of described time slot collection and the time slot of subscriber line circuit, remove the speech channel that described switching network opposite end time slot is concentrated described optical line terminal time slot corresponding to described time slot, and notify described optical network unit to remove described time slot by described three module and concentrate of the speech channel of described optical network unit time slot corresponding to the time slot of described subscriber line circuit; Obtain the idle time slot of described optical line terminal by described first submodule to optical network unit, set up of the speech channel of described switching network opposite end time slot, and notify described optical network unit to set up of the speech channel of described idle time slot to the time slot of described subscriber line circuit by described three module to the idle time slot that is obtained.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101124707A CN101094141B (en) | 2007-06-28 | 2007-06-28 | Method and system for protecting voice channel of access network, and optical line terminal |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2007101124707A CN101094141B (en) | 2007-06-28 | 2007-06-28 | Method and system for protecting voice channel of access network, and optical line terminal |
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| CN101094141A true CN101094141A (en) | 2007-12-26 |
| CN101094141B CN101094141B (en) | 2010-06-16 |
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| CN2007101124707A Expired - Fee Related CN101094141B (en) | 2007-06-28 | 2007-06-28 | Method and system for protecting voice channel of access network, and optical line terminal |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009079853A1 (en) * | 2007-12-24 | 2009-07-02 | Zte Corporation | The method and device for protecting the shared channel in the optical transmission system |
| WO2010060297A1 (en) * | 2008-11-25 | 2010-06-03 | 华为技术有限公司 | Method and system for realizing a transmission channel of a multi-service transmitting network |
| CN102075246A (en) * | 2011-01-19 | 2011-05-25 | 中兴通讯股份有限公司 | Method, system and optical line terminal for obtaining malfunction information of optical network unit |
-
2007
- 2007-06-28 CN CN2007101124707A patent/CN101094141B/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009079853A1 (en) * | 2007-12-24 | 2009-07-02 | Zte Corporation | The method and device for protecting the shared channel in the optical transmission system |
| WO2010060297A1 (en) * | 2008-11-25 | 2010-06-03 | 华为技术有限公司 | Method and system for realizing a transmission channel of a multi-service transmitting network |
| CN102075246A (en) * | 2011-01-19 | 2011-05-25 | 中兴通讯股份有限公司 | Method, system and optical line terminal for obtaining malfunction information of optical network unit |
| CN102075246B (en) * | 2011-01-19 | 2015-05-13 | 中兴通讯股份有限公司 | Method, system and optical line terminal for obtaining malfunction information of optical network unit |
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| Publication number | Publication date |
|---|---|
| CN101094141B (en) | 2010-06-16 |
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