KR20020055957A - Method for activating V5.2 interface in wireless subscribe network with one more E1 link - Google Patents

Abstract

PURPOSE: An activation method of a V5.2 interface is provided to reduce an inactivated time of the interface and to improve a reliability by using the activation method although only one link capable of being used between a primary link and a secondary link. CONSTITUTION: An activation method of a V5.2 interface comprises a first step(ST21) grasping a physical state of a link whether capable of using or not, a second step(ST22) discriminating a primary link and a secondary link whether capable of using at least one link between the primary and secondary links, and a last step(ST23) performing an operating process of the V5.2 interface when capable of using at least one link between the primary and secondary links.

Description

Method for activating V5.2 interface in wireless subscribe network with one more E1 link}

The present invention relates to a method of activating a V5.2 interface when one or more links are available in a wireless subscriber network. In particular, the present invention relates to a method for activating a V5.2 interface if only one of the primary link or the secondary link is available. The present invention relates to a method of activating a V5.2 interface when one or more links are available in a wireless subscriber network, which can be activated so as to reduce an interface deactivation time, improve interface reliability, and provide continuous voice service.

In general, in a wireless subscriber network, a transmitting device accommodates a plurality of subscribers, and when a subscriber is off-hook for communication, it monitors off-hook line status or call status, and switches (LE: Local Exchange). ), The call path of the exchange establishes the communication path between the caller and the called party and communicates with it.

1 is a block diagram of a general wireless subscriber network.

As shown in the figure, the terminal 10 made of a telephone or dedicated communication equipment and the like so that subscribers can communicate; A subscriber network (Access Network, AN) 20 connected to the terminal 10 to monitor the line state in hardware (H / W); It consists of a switch (Local Exchange, LE) (30) for call processing by the signal received from the subscriber network (AN) (20).

When the subscriber off-hooks the terminal 10 in the wireless subscriber network, the subscriber network 20 recognizes the off-hook state of the subscriber line and the subscriber terminal in hardware (H / W). The off-hook state of 10 is transmitted to the exchange 30.

The caller receives a dial tone applied from the exchange 30, the subscriber dials, and the dialing signal is called by the switch 30 to establish a communication path between the caller and the called party, and communication proceeds. Will be.

Even in the case of the called party, communication is performed by transmitting a call signal in the subscriber network 20 in hardware by a signal applied from the exchange 30.

At this time, the subscriber network 20 and the exchange 30 to perform the interface by the V5.2 protocol.

The prior art for activating the V5.2 protocol between the subscriber network (AN) 20 and the switch (LE) 30 is as follows.

FIG. 2 is a flowchart illustrating a method of activating a V5.2 interface in a conventional wireless subscriber network, FIG. 3 is a message flow diagram of FIG. 2, and FIG. 4 is a detailed flowchart of a link ID identification step of FIG. 2.

As shown here, when data link establishment of each protocol is started, step (ST11) (ST12) of performing data link establishment for a protection protocol on a primary link; Performing data link establishment for a protection protocol on a secondary link after performing data link establishment for a protection protocol on the primary link (ST13); Performing data link setting for a control protocol after performing data link setting for a protection protocol on the secondary link (ST14); Performing data link setting for the link control protocol after performing data link setting for the control protocol, and performing data link setting for the bearer connection control (BCC) protocol (ST15); ; Performing data link establishment for a Public Switched Telephone Network (PSTN) protocol after performing data link establishment for the BCC protocol (ST16); Performing a verification of a variant and an interface ID after performing data link establishment for the PSTN protocol (ST17); Performing link ID identification after performing the variant and interface ID verification (ST18); Performing a PSTN port restart after performing the link ID identification (ST19); After performing the PSTN port restart, a quick port alignment is performed (ST20).

3, reference numeral 8179 denotes a data link of a protection protocol set on a primary link, and 8179 'denotes a data link of a protection protocol set through a secondary link. Say.

As shown in Fig. 3, the conventional start-up procedure is to set 8179 first and then set 8179 '.

This assumes that both links, the primary link and the secondary link, activate the interface only in a physically fault-free state, that is, in link availability.

This prior art operation will be described in more detail.

Referring to FIG. 3, a startup procedure for activating a conventional interface can be divided into five steps, and each step performs detailed internal steps.

1. Data Link Setup Steps for Each Protocol

① Data link setting for protection protocol on primary link

② Data link setting for protection protocol on secondary link

③ Data link setting for control protocol

④ Data link setting for Link Control protocol

⑤ Data link setting for BCC protocol

⑥ Data link setting for PSTN protocol

2.Variant and Interface ID Verification Steps

3. Link ID Identification Step (See Figure 4)

4.PSTN port restart step

5. Quick port step

In order to establish a data link, the subscriber network (or exchange) that has confirmed that the link has become available due to the physical failure of the link is resolved, sends a frame called "SABME", and the receiving side sends "UA" in response. Send it.

Through the transmission and reception of the "SABME", "UA" to establish a data link for one protocol.

The prior art first establishes the data link of the protection protocol over the primary link 8179, i.e., then establishes the data link of the protection protocol over the secondary link.

This assumes that both the primary link and the secondary link are physically available. If one of the two links, the primary link or the secondary link, is not physically available, then the starting procedure cannot be performed. As a result, the interface is still in an inactive state, which can be a barrier to providing continuous voice service.

4 is a message flow diagram for the link ID identification step. This step is carried out as many as the number of links managed by the interface. If the link ID identification step fails even for one of the links managed by the interface, the startup procedure fails.

However, this prior art assumes that both the primary link and the secondary link are physically available, so that if either link is not physically available, the startup procedure cannot proceed and the interface is still inactive. There was a problem to maintain. Accordingly, the inactive state of the interface lasts for a long time, which leads to prolongation of the failure time, resulting in a decrease in reliability of the interface and the inability to provide continuous voice service.

Accordingly, the present invention has been proposed to solve the above-mentioned conventional problems, and an object of the present invention is to interface with one of the primary link or the secondary link if it is available. It provides a method of activating the V5.2 interface when one or more links are available in the wireless subscriber network that can reduce the deactivation time of the interface, improve the reliability of the interface, and provide continuous voice service.

In order to achieve the above object, the V5.2 interface activation method when one or more links are available in a wireless subscriber network according to an embodiment of the present invention,

Determining an available state of the primary link and the secondary link by identifying the physical availability of the link; If at least one of the primary link and the secondary link is available, characterized in that the technical configuration characterized in that performing including the step of performing the startup procedure of the V5.2 interface.

1 is a block diagram of a general wireless subscriber network,

2 is a flowchart illustrating a method of activating a V5.2 interface in a conventional wireless subscriber network.

3 is a message flow diagram of FIG.

4 is a detailed flowchart of a link ID identification step of FIG. 2;

5 is a flowchart illustrating a method of activating a V5.2 interface when one or more links are available in a wireless subscriber network according to the present invention.

FIG. 6 is a detailed flowchart when both the primary link and the secondary link are physically available in FIG. 5.

FIG. 7 is a message flow diagram of FIG. 6;

FIG. 8 is a detailed flowchart of a case in which the primary link is physically available in FIG. 5;

9 is a message flow diagram of FIG. 8;

FIG. 10 is a detailed flowchart of a case in which the secondary link is physically available in FIG. 5;

FIG. 11 is a message flow diagram of FIG. 10.

** Description of symbols for the main parts of the drawing **

10: terminal 20: subscriber network (AN)

30: exchanger (LE)

Hereinafter, an embodiment according to the present invention, a technical concept of the V5.2 interface activation method when one or more links are available in the wireless subscriber network will be described with reference to the drawings.

5 is a flowchart illustrating a method of activating a V5.2 interface when one or more links are available in a wireless subscriber network according to the present invention.

As shown therein, determining the available states of the primary link and the secondary link by identifying the physical availability of the link (ST21) (ST22); If at least one of the primary link and the secondary link is available, a step (ST23) of performing a startup procedure of the V5.2 interface is performed.

FIG. 6 is a detailed flowchart of the case where both the primary link and the secondary link are physically available in FIG. 5.

As shown in the drawing, if both the primary link and the secondary link are physically available, establishing a data link for all protocols including protection in the primary link and the secondary link, and proceeding with a startup procedure (ST31) ( ST32); Determining whether link ID identification has failed (ST33) (ST34) when link ID identification is performed in the start-up procedure; Reporting to an operator when the link ID identification fails (ST34); And reporting the failure of the link ID identification to the operator or continuing the startup procedure if the link ID identification is successful (ST35).

FIG. 8 is a detailed flowchart of a case in which the primary link is in a physically available state in FIG. 5.

As shown in this figure, if the primary link is physically available, the data link for the protection protocol on the primary link and the secondary link is established, the data link for another protocol is established, and the startup procedure is performed. Steps ST41 to ST43; If the secondary link is in a physically available state during the start-up procedure, performing a data link setting for the protection protocol on the secondary link and continuing the start-up procedure (ST44 to ST46); Determining link ID identification if the link ID identification is failed in the startup procedure (ST47); Reporting to the operator if the link ID identification fails (ST49); And reporting the failure of the link ID identification to the operator or continuing the startup procedure if the link ID identification is successful (ST50).

FIG. 10 is a detailed flowchart of the case in which the secondary link is physically available in FIG. 5.

As shown here, if the secondary link is physically available, attempting to establish a data link for a protection protocol in the primary and secondary links (ST51) (ST52); Determining whether a data link is established for the protection protocol in the secondary link after an attempt to establish a data link for the protection protocol in the primary and the secondary link (ST53); Transmitting a "Switch-Over Request" message from the subscriber network (20) to the exchange (30) when the data link for the protection protocol on the secondary link is established (ST54); If the subscriber network 20 transmits a "Switch-Over Request" message to the switch 30 or if the subscriber network does not recognize the data link setting, the switch 30 switches from the switch 30 to the subscriber network 20. Transmitting an “Over Command” message (ST55); Performing a switching procedure based on the active / standby C channel information, establishing a data link of other protocols through an active C channel, and then starting a startup procedure (ST56 to ST58); Determining whether the primary link is in a physically available state during the startup procedure (ST59); If the primary link is in a physically available state, performing a data link setup for a protection protocol on the primary link and then continuing the startup procedure (ST60) (ST61); Determining whether link ID identification has failed (ST62) (ST63) when link ID identification is performed in the start-up procedure; Reporting to an operator when the link ID identification fails (ST64); And reporting the failure of the link ID identification to the operator or continuing the startup procedure if the link ID identification is successful (ST65).

The operation of the V5.2 interface activation method when one or more links are available in the wireless subscriber network according to the present invention configured as described above will be described in detail with reference to the accompanying drawings.

First, FIG. 5 is a flowchart illustrating a method of activating a V5.2 interface when one or more links are available in a wireless subscriber network according to the present invention. FIG. 6 is a detailed flowchart of a case in which both the primary link and the secondary link are physically available in FIG. 5. 7 is a message flow diagram of FIG. 6, FIG. 8 is a detailed flowchart when the primary link is physically available in FIG. 5, FIG. 9 is a message flow diagram of FIG. 8, and FIG. 10 is FIG. 5. FIG. 11 is a detailed message flow diagram when the secondary link is in a physically available state. FIG. 11 is a message flow diagram of FIG.

In addition, the present invention is different from the conventional technology in two aspects as follows.

First, prior art establishes the data link for the protection protocol on the primary link (8179), and then establishes the data link for the protection protocol on the secondary link. (8179 '), such as setting the data link for the Protection protocol (sequential), while in the present invention concurrency. In other words, if a link is physically available, both links attempt to establish a data link in the Protection protocol at the same time, regardless of whether it is a primary link or a secondary link. If the link is established, continue the startup procedure.

Second, if the link ID identification procedure fails for one of all the links managed by the interface, the conventional technology regards it as a start-up procedure failure, whereas in the present invention, even if a link that fails the link ID identification procedure occurs, Only report the operator and proceed with the start-up procedure. That is, even if the link ID identification procedure fails, it is not regarded as a start procedure failure.

In each case, the operation of the present invention is as follows.

First case: both primary and secondary links are physically available (FIGS. 6 and 7)

In this case, the startup procedure is performed according to the conventional art.

However, in the case of the link ID identification procedure, all the links managed by the interface should be implemented, and even if the link ID identification procedure fails on one of the links, the link ID identification procedure will not be regarded as a failure of the startup procedure. The procedure continues.

Second case: only primary link is physically available (FIGS. 8 and 9)

In this case, the primary link is recovered first for a physical link failure.

So, after setting up the data link for the protection protocol on the primary link, continue the startup procedure.

If the secondary link remains in physical link use even during the start-up procedure or after the interface has been activated, then establish a data link to the protection protocol on the secondary link.

In the case of the link ID identification procedure, as in the first case, the link management is performed on all the links managed by the interface.If the link ID identification procedure fails on one of the links, the link ID identification procedure is not regarded as a failure of the startup procedure. Only provide the starting procedure.

Third case: only secondary link is physically available (FIGS. 10 and 11)

In this case, the secondary link is first recovered due to a physical link failure.

So, after setting up the data link for the protection protocol on the secondary link, the transfer procedure is performed.

The transfer at this time is performed as follows.

First, establish a data link to (8179 ').

② The exchange 30 performs a switchover by transmitting a "Switch-Over Command" message to the subscriber network 20 through 8179 '. If the subscriber network 20 side first recognizes the data link setup for 8181 ', it sends a "Switch-Over Command" message to the exchange 30 side, and the exchange 30 side responds to it or has its own data link. The “switch-over command” is transmitted to the subscriber network 20 by the configuration recognition procedure.

③ The subscriber network 20 receiving the “Switch-Over Command” message performs the change by changing the Active / Standby C channel information.

④ After that, set up data link of other protocols through changed Active C channel and perform startup procedure.

If the primary link changes to physically available during the start-up procedure or even after the interface is activated, then the data link is established for the protection protocol on the primary link.

Also, in the case of the link ID identification procedure, as in the first and second cases, the link management is performed on all the links managed by the interface, and even if the link ID identification procedure fails on one of the links, the operation procedure is not considered as a failure of the startup procedure. Only visible information is provided and the start-up procedure continues.

As such, the present invention allows the interface to be activated through only one of the primary link or the secondary link, so that the interface can be activated, thereby reducing the deactivation time of the interface, improving the reliability of the interface, and providing continuous voice. It will provide a service.

Although the preferred embodiment of the present invention has been described above, the present invention may use various changes, modifications, and equivalents. It is clear that the present invention can be applied in the same manner by appropriately modifying the above embodiments. Accordingly, the above description does not limit the scope of the invention as defined by the limitations of the following claims.

As described above, when one or more links are available in the wireless subscriber network according to the present invention, the method of activating the V5.2 interface may use this link if only one link of the primary link or the secondary link is available. This enables the interface to be activated, reducing the time to deactivate the interface, improving the reliability of the interface, and providing continuous voice services.

In addition, in the worst case, the service can be provided even when there is only one link, and even if only one of the primary link or the secondary link is available, the interface can be activated if the interface is available, thereby reducing the downtime of the interface. By reducing the voice service short circuit time, it is possible to guarantee the continuous voice service as much as possible.

Claims (4)

Determining an available state of the primary link and the secondary link by identifying the physical availability of the link; If at least one of the primary link and the secondary link is available, performing a startup procedure of a V5.2 interface, comprising: performing a V5.2 interface when one or more links are available in a wireless subscriber network. . The method of claim 1, wherein the V5.2 interface activation method when one or more links are available in the wireless subscriber network. If both the primary link and the secondary link are physically available, establishing a data link for all protocols including protection in the primary link and the secondary link and proceeding with a startup procedure; Determining whether link ID identification fails when link ID identification is performed in the start-up procedure; Reporting to the operator if the link ID identification fails; And reporting the failure of the link ID identification to the operator or continuing the startup procedure if the link ID identification is successful. The method of claim 1, wherein the V5.2 interface activation method when one or more links are available in the wireless subscriber network. If the primary link is physically available, establishing a data link for a protection protocol in the primary link and the secondary link, establishing a data link for another protocol, and proceeding with a startup procedure; If the secondary link is in a physically available state during the startup procedure, performing a data link setup for the protection protocol on the secondary link and continuing the startup procedure; Determining whether link ID identification fails if link ID identification is performed in the start-up procedure; Reporting to the operator if the link ID identification fails; And reporting the failure of the link ID identification to the operator or continuing the startup procedure if the link ID identification is successful. The method of claim 1, wherein the V5.2 interface activation method when one or more links are available in the wireless subscriber network. If the secondary link is physically available, attempting to establish a data link for a protection protocol on the primary and secondary links; Determining whether a data link is established for the protection protocol in the secondary link after attempting to establish a data link for the protection protocol in the primary and the secondary link; If a data link for the protection protocol on the secondary link is established, transmitting a "Switch-Over Request" message from the subscriber network to the exchange; Transmitting a "Switch-Over Command" message from the switch network to the subscriber network if the subscriber network transmits a "Switch-Over Request" message to the switch or if the subscriber network does not recognize the data link setting; Performing a switching process based on the active / standby C channel information, establishing a data link of other protocols through an active C channel, and then starting a startup procedure; Determining whether a primary link is in a physically available state during the startup procedure; If the primary link is in a physically available state, performing a data link establishment for a protection protocol on the primary link and then continuing the startup procedure; Determining whether link ID identification fails if link ID identification is performed in the start-up procedure; Reporting to the operator if the link ID identification fails; And reporting the failure of the link ID identification to the operator or continuing the startup procedure if the link ID identification is successful.