KR100404175B1 - V5.2 Interface Operating Method - Google Patents

Abstract

The present invention relates to a method of operating a V5.2 interface that automatically recovers when the V5.2 interface is down without relocation when the main link or sublink is restored. The method of operating the V5.2 interface according to the present invention includes checking whether all data links are activated when there are enough links to be used according to the recovery start request after the primary link and the secondary link which are formed during the access network and the local exchange period are stopped. Determining whether the Variant and the interface identifier are the same when all the data links are activated, and checking whether the identifiers of all the links are confirmed when the Variant and the interface identifier are the same; If all the links have been identified, checking whether the public switched telephone network is activated; if the public switched telephone network is activated, checking whether all the subscribers have been released; And reporting the telephone network activation. Therefore, if both the primary link and the secondary link fail and any link is restored, the V5.2 interface is operated without interruption because the lost data link formed between the access network manager and the local exchange manager is restarted. .

Description

5.2 Interface Operation Method

The present invention relates to a method of operating a V5.2 interface of a wireless local loop (WLL). In particular, the present invention relates to a method of operating a V5.2 interface suitable for restarting after a failure in a system when operating a V5.2 interface. It is about.

In general, the V5.2 interface is applied to a wireless subscriber network, and as illustrated in FIG. 1, defines electrical and physical characteristics, procedural requirements, and protocol requirements between the access network 10 and the local exchange 20.

The V5.2 interface can have up to 16 2048 kbit / s links, as shown in FIG. 1, and a control data link 31 formed between the access network 10 and the local exchange 20 as shown in FIG. 2. 41, link control data links 32 and 42, public switched telephone network data links 33 and 43, carrier channel connector data links 34 and 44, protected data links 35, 36, 45 and 46 Public Switching Telephone Network (PSTN) protocol, control protocol, link control protocol, BCC protocol and protection protocol are supported.

Here, the primary link and the secondary link are defined before the system of the wireless subscriber network is activated.

The primary link is a link on a multi-link V5.2 interface that carries the physical common channel protection protocol communication path assigned to handle signaling in timeslots (eg timeslot 16) set up in the entire time slot and is a wireless subscriber network. When the system is initialized, it provides communication path for control protocol, link control protocol and BCC protocol.

A secondary link, on the other hand, is a link on a multi-link V5.2 interface that carries the physical common channel protection protocol communication path assigned to handle signaling in timeslots (e.g. timeslot 16) set up in the entire time slot. When the system of the subscriber network is initialized, it is a reserved common channel for control protocol, link control protocol, BCC protocol, and other communication paths delivered in the time slot of the primary link.

In such a primary link or a secondary link, a time slot physical communication channel includes a protection protocol to form a protection group.

In such a V5.2 interface, when the system of the wireless subscriber network is initialized, the control network 10 and the local switch 20 manage the control data link 31 and 41 and the link control data link through a predetermined communication path. 32, 42, public switched telephone network data links 33, 43, BCC (Barrier Channel Connector) data links 34, 44, and protected data links 35, 36, 45, 46 are set. At this time, the logic for each of the network 10 and the local exchange 20 detects a failure of a 2048 kbit / s link or monitors the data link to automatically establish a logical communication channel when the physical communication channel goes into an inactive state. Alternate from link to secondary link.

However, in the related art, when both the primary link and the secondary link fail, the link control data links 32 and 42 and the BCC (Barrier) formed between the access network operator 30 and the local switch operator 40 are used. Channel Connector) Data Links 34, 44 and Protected Data Links 35, 36, 45, 46 are lost. In this case, the operator must relocate and recover directly to another 2048 kbit / s link, and the V5.2 interface will continue to be suspended until it is restored.

An object of the present invention has been made in view of the above-mentioned problems of the prior art, the operation of the V5.2 interface that is automatically recovered without relocation when the main link or sublink is restored when the V5.2 interface is interrupted It is to provide a method.

According to a feature of the present invention for achieving the above object, if the V5.2 interface operating method has enough links to be used in accordance with the recovery start request after the primary and secondary links formed during the local exchange period are interrupted, Determining whether a data link is activated; determining if a variant and an interface identifier are the same if all of the data links are activated; and if all the links are identical if the variant and the interface identifier are the same. Confirming that the identifiers have been checked; if all the links have been identified; checking whether the public switched telephone network has been activated; and if the public switched telephone network has been activated, checking whether all subscribers have been unblocked; If the subscriber is unblocked, report the activation of the public switched telephone network. It may comprise the steps:

1 is a view showing the configuration of a general V5.2 interface.

2 is a diagram for explaining the function of a general V5.2 interface data link.

3 is a flowchart showing a system startup process when operating a V5.2 interface according to the present invention;

4 is a flowchart illustrating a request process for starting the system after the system is stopped during the operation of the V5.2 interface according to the present invention.

Explanation of symbols for main parts of the drawings

10: access network 20: local exchange

30: access network operation unit 40: local exchange operation unit

31,41; Control Data Link32,42: Link Control Data Link

33, 43: public switched telephone network data link

34, 44: BCC data link 35, 36, 45, 46: protected data link

Hereinafter, a configuration and an operation according to an exemplary embodiment of the present invention will be described with reference to the accompanying drawings.

The present invention has a feature of automatically starting a V5.2 interface using a primary link or a secondary link when the primary link and the secondary link formed between the access network 10 and the local exchange 20 are connected. Therefore, the V5.2 interface is automatically started automatically when the system of the wireless subscriber network is powered up again or when the primary link or the secondary link becomes inoperative.

3 is a flowchart illustrating a system startup process when operating a V5.2 interface according to the present invention.

Referring to Figure 3, the process of activating the V5.2 interface is as follows. First, if the system of the wireless subscriber network is required to start up in the idle state (S300) (S301), it is checked whether the link established between the access network operation unit 30 and the local exchange operation unit 40 is sufficient ( S301). If there are enough links to use as a result at this time, it is determined whether all data links are activated (S303). If it is determined that the result is activated, it is determined whether the variable Variant and the interface identifier are the same (S304). If the result is the same as the variable (Variant) and the interface identifier, it is checked whether all the link identifier is confirmed (S305). At this time, if it is confirmed whether all link identifiers are confirmed, it is checked whether the public switched telephone network is activated (S306). At this time, when the public switched telephone network is activated, it is determined whether the blocking of all subscribers is released (S307). If the blocking of all subscribers is released, the system reports that the activation is completed (S308).

4 is a flowchart illustrating a process for requesting system startup after a V5.2 interface operation is suspended according to the present invention.

Referring to FIG. 4, when the primary link and the secondary link are lost, the system of the wireless subscriber network eliminates the failure of the lost link and restores the link again (S401). Subsequently, it is determined whether the primary pink or secondary link is recovered among the recovered links (S402 and 403). At this time, if the primary pink or secondary link is restored, it requires an internal start (S404).

According to the present invention as described above, when both the primary link and the secondary link have failed and the primary link or the secondary link is restored, because the lost data link formed between the access network operator and the local exchange operator is restarted, V5.2. The effect is that the interface operates without interruption. Accordingly, the present invention not only increases the competitiveness of wireless subscriber network products but also enables reliable communication by applying the present invention.

Claims (2)

Verifying that all data links are active if there are enough links to be used in response to a recovery start-up request after the primary and secondary links established during the access network and local exchange are down; Determining whether the variable and the interface identifier are the same when all of the data links are activated; If the variant and the interface identifier are the same, confirming that all link identifiers are verified; If all the links have been identified, checking whether the public switched telephone network is activated; Checking whether all the subscribers are released when the public switched telephone network is activated, and reporting the activation of the public switched telephone network when all the subscribers have been released. The method of claim 1, wherein the primary link and the secondary link are lost Recovering the lost link again; Determining, sequentially among the recovered links, whether the primary pink or secondary link has recovered; And if the primary pink or secondary link is restored, requesting an internal start.