JP3440926B2 - Multiple V5 interface accommodating system of same subscriber, access network, host station - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a V5 interface (ITU-T specification subscriber access interface).
The present invention relates to a method for accommodating a plurality of V5 interfaces of the same subscriber, which makes it possible to make a call / receive a call when a failure occurs in the V5 interface.

[0002]

2. Description of the Related Art Conventionally, ITU-T specifications (ETSI: Euro
In the V5 interface system, which is a subscriber access interface of the Pean Telecommunications Standard Institute, subscribers are accommodated in a one-to-one correspondence with each V5 interface.

FIG. 5 is a diagram showing a conventional V5 interface accommodation system. A plurality of subscribers a, b and subscribers a,
a host station such as a local exchange in a public line network accommodating b (hereinafter, also referred to as "Local Exchange" or "LE");
An access network that accommodates subscribers (hereinafter referred to as "Access N
etwork "," AN ") and the host station (L
E) and a plurality of V5 interfaces which are subscriber access interfaces of the ITU-T specifications (ETSI specifications) for connecting the Access Network (AN).

In the conventional V5 interface accommodating system,
As shown in FIG. 5, the subscriber a has V5 interface #A.
(V5Interface # A) and the subscriber b are configured to correspond to the V5 interface #B (V5Interface # B) in a one-to-one correspondence. For example, when only the V5 interface #A cannot be used due to a failure or the like, The subscriber b can make a call and receive a call through the V5 interface #B, but the subscriber a is in a state where it cannot make a call and receive a call.

[0005]

As described above, in the conventional interface accommodation method, the access network connected to the host station (LE) by the V5 interface is used.
Each subscriber accommodated in (AN) can use V5
There is only one interface each.

Therefore, in the conventional interface accommodating system, the subscriber accommodated in the V5 interface that cannot be used due to a device failure or the like cannot make or receive a call until the V5 interface is restored.

Considering that such a situation can occur, the V5 interface cannot accommodate important subscribers such as police and hospitals.

(Object of the Invention) An object of the present invention is to provide a method for accommodating a plurality of V5 interfaces of the same subscriber, which makes it possible to avoid a situation where the subscriber cannot make or receive a call.

[0009]

The present invention provides a host station (L
E) and connect Access Network the (AN) in a plurality of different V5 interface, the subscriber is different those multiple V
The feature is that if any one of the five interfaces can be used, outgoing and incoming calls are possible. That is, the multiple subscriber V5 interface accommodating method of the present invention is designed to provide a connection between the host station (20 in FIG. 2) and the access network (10 in FIG. 2) accommodating the subscriber (a in FIG. 2). In the method of accommodating a plurality of V5 interfaces for the same subscriber, the host station and the access circuit network have a plurality of different subscriber terminal identifiers (radio terminal identifiers and subscriber numbers in FIGS.
The subscriber data management unit (11 and 12 in FIG. 2) in which the correspondence relationship between the V5 interface identifier and the logical layer 3 address pair is registered, and the V5 resource management unit (in FIG. 2) in which the availability information of the V5 interface is registered. 12, 2
2) and V that can be used by referring to the subscriber data management unit and the V5 resource management unit from the terminal identifier of the calling subscriber.
5 interface transmits the information of the V5 interface identifier and its logical layer 3 address pair to the other side, and refers to the subscriber data management unit from the received information of the V5 interface identifier and its logical layer 3 address pair. And a call control unit (13, 23 in FIG. 2) for detecting the terminal identifier of the subscriber.

The access network of the present invention uses the received V5
An access circuit network in which the same subscriber is accommodated in a plurality of different V5 interfaces, which is connected to a host station that detects a terminal identifier of a subscriber from information on a pair of an interface identifier and its logical layer 3 address, Of the calling subscriber, the subscriber data management unit that registers the correspondence between the terminal identifier of the V5 interface identifier and a plurality of pairs of different V5 interface identifiers and logical layer 3 addresses, the V5 resource management unit that registers the availability information of the V5 interface, and A call control unit for transmitting information of a pair of the V5 interface identifier and its logical layer 3 address to the host station by the V5 interface which can be used by referring to the subscriber data management unit and the V5 resource management unit from the terminal identifier. V5, which is characterized by having or that can be used from the terminal identifier of the subscriber. Is connected to a host station to transmit the information of the V5 interface identifier and the logical layer 3 address pairs by interface, the same subscriber multiple
An access circuit network accommodated in different V5 interfaces, wherein a subscriber data management unit registers a correspondence relationship between a terminal identifier of a subscriber and a plurality of pairs of different V5 interface identifiers and logical layer 3 addresses; It is characterized by having a call control unit for detecting the terminal identifier of the calling subscriber by referring to the subscriber data management unit from the information of the pair of the V5 interface identifier and its logical layer 3 address.

The host station of the present invention is connected to an access network which transmits information on a pair of the V5 interface identifier and its logical layer 3 address by the V5 interface available from the subscriber's terminal identifier. Is a host station accommodated in a plurality of different V5 interfaces, and has a subscriber terminal identifier and a plurality of different V5 interfaces.
Referring to the subscriber data management unit from the subscriber data management unit that has registered the correspondence relationship between the interface identifier and the logical layer 3 address pair, and the received information on the V5 interface identifier and the logical layer 3 address pair. An access circuit for detecting the terminal identifier of the subscriber from the information of the pair of the received V5 interface identifier and the logical layer 3 address thereof, the call control section detecting the terminal identifier of the calling subscriber. A host station in which the same subscriber is accommodated in a plurality of different V5 interfaces connected to each other, and the correspondence relationship between the terminal identifier of the subscriber and a plurality of different V5 interface identifiers and logical layer 3 address pairs is registered. Subscriber data management unit and V5 resource manager that registered availability information of V5 interface Parts and, the by sending subscriber said subscriber data management unit and the V5 interface can be used with reference to the V5 resource manager from the terminal identifier of the V5
It is characterized by having a call control unit for transmitting information on a pair of an interface identifier and its logical layer 3 address to the access network.

(Operation) A subscriber is accommodated in a plurality of V5 interfaces between the access network and the host station. The host station and the access circuit network register a subscriber data management unit that registers a correspondence relationship between a subscriber terminal identifier, a plurality of V5 interface identifiers and pairs of logical layer 3 addresses, and V5 interface availability information. V
5 A resource management unit and a call control unit are provided. Each call control unit refers to the subscriber data management unit and the V5 resource management unit based on the terminal identifier of the calling subscriber, and can use the available V.
The information of the V5 interface identifier and its logical layer 3 address pair is transmitted to the other side by the 5 interface, and the V5 interface identifier and its logical layer 3 address pair are transmitted by referring to the subscriber data management unit from the received V5 interface identifier and its logical layer 3 address pair. Detect the subscriber's terminal identifier. Compared to the conventional method in which the subscribers are tied to the single V5 interface, it is possible to reduce the possibility that the subscribers cannot make or receive calls.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION (Description of Configuration) Next, a basic configuration of a system for accommodating a plurality of V5 interfaces for the same subscriber according to the present invention and an embodiment thereof will be described.

FIG. 1 is a diagram showing the basic configuration of a system for accommodating a plurality of V5 interfaces for the same subscriber according to the present invention. The multiple subscriber V5 interface accommodation method of the present invention is
A plurality of subscribers a and b, a host station (LE) 20 accommodating the subscribers a and b, an Access Network (AN) 10,
The host station (LE) 20 and Access Network (AN) 1
ITU-T specifications (E
TSI specifications) and a plurality of V5 interfaces which are subscriber access interfaces. According to the present invention, an available V5 interface is assigned to each of the subscribers a and b among a plurality of V5 interfaces, and
, And LE to allow outgoing and incoming call control.

According to this configuration, the subscriber a can use both the V5 interface #A and the V5 interface #B for outgoing and incoming calls by the call control of the AN and the LE, which will be described below. V5 interface # that can be used even if A is in failure #
You can make and receive calls via B.

FIG. 2 is a diagram showing a more detailed structure of the present embodiment. In this embodiment, the AN side and the LE side are
Each of the subscriber data management units 11 and 21 and the V5 interface resource management unit (V5) has the functions described below.
Resource management unit) 12, 22 and call control unit 13, 23
Have. In addition, the present embodiment shows an example in which the subscriber and the AN are wireless interfaces. Subscriber data management unit 11, 21, V5 resource management unit 12, 2
2 and the functional outline of each part of the call control units 13 and 23 are as follows. In the V5 protocol, V5
Interface identifier (hereinafter referred to as "V5ID") +
A subscriber is specified by a logical layer 3 address (hereinafter referred to as “L3 address”).

"Subscriber data management unit" AN side subscriber data management unit 11: a wireless terminal identifier of a subscriber connected to the AN side via a wireless interface,
It has a function of managing the correspondence of the "V5ID + L3 address" pair. Here, a plurality of "V5ID + L3 address" pairs can be associated with one wireless terminal identifier and set.

LE side subscriber data management unit 21: The subscriber number (telephone number) of the LE side subscriber and "V5ID + L3".
It has a function of managing correspondence between address "pairs. Here, it is possible to set a plurality of" V5ID + L3 address "pairs corresponding to one subscriber number.

"V5 resource management unit" AN side V5 resource management unit: manages the state (usable / unusable) of the V5 interface. LE-side V5 resource management unit: manages the state (enabled / disabled) of the V5 interface.

"Call control unit" AN side call control unit 13: Performs call origination / termination processing according to the V5 protocol procedure. That is, the AN side call control unit 13 stores the list of “V5ID + L3 address” pairs corresponding to the wireless terminal identifier of the subscriber in the AN side subscriber data management unit 11
Then, the "V5ID" on the searched list is used to inquire of the AN side V5 resource management unit 12 whether the corresponding V5 interface can be used. If there is a usable V5 interface, the V5 interface is used. Then, the transmission process according to the V5 procedure is performed, and "V
5ID + L3 address "is notified to the LE side.
The calling subscriber is specified based on the "V5ID + L3 address" notified from the E side. LE side call control unit 23: V5
Send / receive processing according to the protocol procedure. That is, the LE-side call control unit 23 sets the list of the corresponding "V5ID + L3 address" from the subscriber number (telephone number) to LE.
The LE side V5 resource management unit 22 is queried for the available V5 interface from the "V5ID" on the list obtained from the side subscriber data management unit 21, and the available V5 interface is searched. If so, the incoming call processing according to the V5 procedure is performed using the V5 interface, and "V5ID + L3 address"
To the AN side. In addition, “V notified from the AN side
5ID + L3 address "to identify the wireless terminal identifier of the subscriber.

(Explanation of Operation) Next, based on the configuration of the present embodiment described above, each operation of transmission and reception will be described in detail with reference to the drawings.

FIG. 3 and FIG. 4 are diagrams showing the processing operation of outgoing and incoming calls according to the present embodiment. FIG. 3 is a diagram showing an operation of making a call from a subscriber accommodating a V5 interface.
FIG. 8 is a diagram showing an operation of receiving a call to a subscriber accommodating a V5 interface. [1] Calls from subscribers accommodating V5 interface (Fig. 3
Reference) (1) When the AN side call control unit 13 receives the wireless terminal identifier by the origination of the subscriber, "V5 corresponding to the identifier" is received.
The list of "ID + L3 address" pair is obtained from the subscriber data management unit 11 on the AN side. In the case of FIG. 3, V5Interface # A + L3addr # X and V5Int which are registered in advance are obtained.
erface # B + L3addr # Y, V5Interface # C + L3a
A list of ddr # Z pairs is obtained. (2) The AN side call control unit 13 inquires of the AN side V5 resource management unit 12 whether or not the corresponding V5 interface can be used from the “V5ID” on the list determined in (1). (3) If the available V5 interface is detected as a result of the inquiry in (2), the outgoing call process according to the V5 procedure is performed using the V5 interface, and "V5ID
+ LE3 address "is notified to the LE side. In the case of FIG.
V5Interface # C is available, so V5Interface
Notify the LE side of # C + L3addr # Z. Note that (2)
As a result, if there is no available V5 interface, the transmission fails. Further, when there are a plurality of usable V5 interfaces, the V5 interface is prioritized in advance and the V5 interface to be used is determined. (4) Upon receiving the “V5ID + L3 address”, the LE side call control unit 23 searches the LE side subscriber data management unit 21 for the subscriber corresponding to the information. In the case of FIG. 3, L
V5Interface # A + is added to the E-side subscriber data management unit 21.
L3addr # X, V5Interface # B + L3addr # Y, V
5Interface # C + L3addr # Z and subscriber number of subscriber a
Since the correspondence with the number (telephone number) is registered in advance, the calling subscriber is specified by this. [2] Incoming call to the subscriber accommodating the V5 interface (see FIG. 4) (1) The LE-side call control unit 23 uses the subscriber number (telephone number)
From the corresponding “V5ID + L3 address” list to L
Obtained from the E-side subscriber data management unit 21. In the case of FIG. 4, V5Interface # A + L3addr # X, V5Interface
# B + L3addr # Y, V5Interface # C + L3addr #
A list of Z pairs is obtained. (2) The LE-side call control unit 23 inquires of the LE-side V5 resource management unit 22 based on the “V5ID” on the list determined in (1) whether or not the corresponding V5 interface can be used. (3) As a result of the inquiry in (2), if there is a usable V5 interface, the incoming call process according to the V5 procedure is performed using the V5 interface, and “V5ID + L3
The address is notified to the AN side. In the case of FIG. 4, V5In
terface # B is available, so V5Interface # B +
Notify the AN side of L3addr # Y. As a result of (2), if there is no usable V5 interface, the incoming call fails. Further, when there are a plurality of usable V5 interfaces, the logic for deciding the V5 interface to be used is decided in advance as in the case of transmission. (4) Upon receiving the “V5ID + L3 address”, the AN side call control unit 13 sets the wireless terminal identifier corresponding to the information to A
Obtained from the N-side subscriber data management unit 11. In the case of FIG. 4 as well, the LE side subscriber data management unit 21 has a V5 Interface
# A + L3addr # X, V5Interface # B + L3addr #
Since the correspondence relationship between Y, V5Interface # C + L3addr # Z and the wireless terminal identifier of the subscriber a is registered in advance,
Thus incoming subscriber is identified.

[0023]

According to the conventional method, the V5 interfaces of the subscriber and the accommodation destination are configured to correspond to each other on a one-to-one basis. Therefore, when the corresponding V5 interface is not available, outgoing and incoming calls cannot be made.

According to the present invention, since the subscriber is configured to be accommodated in a plurality of V5 interfaces, outgoing and incoming calls are disabled only when all V5 interfaces are unavailable. , It is possible to reduce the possibility of making and receiving calls.

Further, since it is possible to minimize the probability that outgoing and incoming calls cannot be made due to a failure of the V5 interface, it is possible to accommodate important subscribers such as police and hospitals in the V5 interface.

[Brief description of drawings]

FIG. 1 is a diagram showing a basic configuration of a system for accommodating a plurality of V5 interfaces for the same subscriber according to the present invention.

FIG. 2 is a diagram showing a more detailed configuration of a system for accommodating a plurality of V5 interfaces of the same subscriber.

FIG. 3 is a diagram showing an operation at the time of making a call from a subscriber accommodating a V5 interface.

FIG. 4 is a diagram showing an operation when an incoming call is made to a subscriber accommodating a V5 interface.

FIG. 5 is a diagram showing a conventional V5 interface accommodation method.

[Explanation of symbols]

10 Access Network (AN) 20 Host station (Local Exchange: LE) 11 AN side subscriber data management unit 12 AN side V5 resource management unit 13 AN side call control unit 21 LE side subscriber data management unit 22 LE side V5 resource management unit 23 LE side call control unit 30 wireless base stations

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Claims (5)

(57) [Claims] 1. A method of accommodating a plurality of V5 interfaces of the same subscriber between a host station and an access circuit in which a subscriber is accommodated, wherein the host station and the access circuit are different from a subscriber's terminal identifier and a plurality of different terminals. The subscriber data management unit that registers the correspondence relationship between the V5 interface identifier and the pair of logical layer 3 addresses, the V5 resource management unit that registers the usable information of the V5 interface, and the subscriber data from the terminal identifier of the calling subscriber. The V5 interface can be used by referring to the management unit and the V5 resource management unit.
Information on a pair of an interface identifier and its logical layer 3 address is transmitted to the other party, and the subscriber's terminal is referred from the received information on the V5 interface identifier and its logical layer 3 address pair by referring to the subscriber data management unit. A method for accommodating a plurality of V5 interfaces for the same subscriber, which has a call control unit for detecting an identifier. 2. An access in which the same subscriber is accommodated in a plurality of different V5 interfaces, which is connected to a host station which detects a terminal identifier of a subscriber from the received information of a pair of a V5 interface identifier and its logical layer 3 address. A circuit network, a subscriber data management unit that registers a correspondence between a terminal identifier of a subscriber and a plurality of different V5 interface identifiers and pairs of logical layer 3 addresses, and a V5 resource that registers availability information of the V5 interface The management station and the terminal identifier of the calling subscriber refer to the subscriber data management section and the V5 resource management section from the terminal identifier of the calling subscriber, and the V5 interface that can be used provides the information of the pair of the V5 interface identifier and its logical layer 3 address to the host station. And a call control unit for transmitting to the access circuit. 3. V5 usable from subscriber's terminal identifier
The same subscriber subscribes to a plurality of different Vs, which are connected by an interface to an access network for transmitting information of the V5 interface identifier and its logical layer 3 address pair.
A host station accommodated in 5 interfaces, a subscriber data management unit that registers a correspondence relationship between a subscriber terminal identifier, a plurality of different V5 interface identifiers, and a pair of logical layer 3 addresses, and the received V5 interface A host station comprising: a call control unit for detecting a subscriber's terminal identifier by referring to the subscriber data management unit from information on a pair of an identifier and its logical layer 3 address. 4. V5 usable from subscriber's terminal identifier
An access circuit network in which the same subscriber is accommodated in a plurality of different V5 interfaces, which is connected to a host station that transmits information on a pair of the V5 interface identifier and its logical layer 3 address by an interface, and the subscriber's terminal The subscriber data management unit in which the correspondence between the identifier and a plurality of different V5 interface identifiers and logical layer 3 address pairs is registered, and the subscriber data from the received information of the V5 interface identifier and its logical layer 3 address pair. An access circuit network comprising: a call control unit for detecting a terminal identifier of a subscriber by referring to a management unit. 5. The same subscriber is accommodated in a plurality of different V5 interfaces, which is connected to an access network for detecting a terminal identifier of a subscriber from the received information of a pair of a V5 interface identifier and its logical layer 3 address. A host station, a subscriber data management unit that registers the correspondence between a subscriber's terminal identifier and a plurality of different V5 interface identifiers and pairs of logical layer 3 addresses, and a V5 resource that registers the availability information of the V5 interface. An access circuit for managing a pair of the V5 interface identifier and its logical layer 3 address by a management unit and a V5 interface that can be used by referring to the subscriber data management unit and the V5 resource management unit from the terminal identifier of the calling subscriber. A host station having a call control unit for transmitting to a network.