KR100276428B1 - Handling method of end-to-end transit delay service in cellular telecommunication system - Google Patents

Abstract

The present invention relates to an end-to-end relay delay service processing method of a mobile communication system that performs relay delay processing before a signal channel or a radio traffic channel allocation, and accumulates relaying to a paging signal transmitted by a destination exchange to find a corresponding terminal. When the terminal includes the delay value, the called terminal receives the paging signal, compares the maximum end-to-end relay delay value with the cumulative relay delay value included in the paging signal, and transmits the result value to the calling party in response to the paging signal. If the cumulative relay delay value is greater than the maximum end-to-end relay delay value, the terminating terminal does not waste expensive radio resources by having to reject a call transmitted from the originating terminal without assigning a signaling channel and a traffic channel. It can be used efficiently without authentication and authentication of the called user. The processing efficiency of the mobile communication network can be improved by preventing the subsequent processing such as start and temporary number assignment procedures.

Description

How to handle end-to-end relay delay service in mobile communication system

The present invention relates to an end-to-end relay delay service processing method of a mobile communication system, and more particularly, to an end-to-end relay delay service for processing an end-to-end relay delay service using a paging message before signal channel allocation and traffic channel allocation. A method of handling end-to-end relay delay service.

The end-to-end relay delay service is a kind of B-ISDN service. After the terminal of the mobile communication system requests the call to use the mobile communication service, the channel for the call is allocated and the call is actually started. It refers to a service that sets the time required until the set time is exceeded and the called terminal rejects the call.

Most conventional mobile communication systems do not provide such end-to-end relay delay service. Even when providing end-to-end relay delay service, a radio signal channel and a traffic channel are first established between a called terminal and a called base station. The receiver terminal checks the end-to-end relay delay information element in the setup signal message and the cumulative delay delay value is the maximum end-to-end transit delay value. By exceeding this, there is a disadvantage in that unnecessary radio signal channels and traffic channels are wasted by rejecting a call.

This conventional end-to-end relay delay processing method is described below with reference to the drawings.

FIG. 1 is a process diagram of a conventional end-to-end relay delay service. Referring to FIG. 1, a conventional end-to-end relay delay service includes a calling terminal (MT_o) 10, a calling base station (BTS_o) 20, Originating control station (BSC_o) 30, originating exchange (MSC_o) 40, location register (HLR) 50, terminating exchange (MSC_t) 60, terminating control station (BSC_t) 70, terminating base station ( BTS_t) (80), and proceeds sequentially by the called terminal (MT-t) 90, first, when the calling terminal 10 requests a call to initiate a call, the calling terminal 10 of the calling party, A call is set up by the originating base station 20, the originating control station 30, and the originating exchange 40 (s101).

At this time, when the user requests the end-to-end relay delay service from the calling party, the end-to-end relay delay information element is included in the SETUP request requesting a call to initiate a call in the call / connection protocol of the terminal. Each intermediate node, that is, the originating base station 20, the originating control station 30, the originating exchange 40, the terminating exchange 60, the terminating control station 70, and the terminating base station 80 are cumulative relay delays. Continue to scale the values.

In this way, when the call is established, the originating exchange 40 transmits an initial address message (IAM) s102 to the destination exchange 60, and the destination exchange 60 receiving the message receives the message. An initial address acknowledgment message (IAA) s103, which is a response signal, is transmitted to the originating exchange 40, and a paging signal PAGING.req.ind is sent to a plurality of terminals to find the called terminal. Transmit (s104).

Then, the terminating terminal 90 corresponding to the call establishes a signal channel by the terminating base station 80 and the terminating control station 70 (s105), and then responds to the terminating exchange 60 with the paging message (PAGING). RESPONSE.req.ind) (s106).

As described above, authentication, encryption start, and temporary number (TMUI) allocation procedure (s107) for the calling user are performed between the destination exchange 60 and the destination terminal 90 in which the signal channel is set, and the destination exchange 60 receives the destination. The paging response confirmation message (PAGING.RESPONSE.resp.conf) transmitted from the terminal 90 is transmitted to the called terminal 90.

On the other hand, the mobile station setup message (SETUP req.ind) transmitted through the destination exchange 60, the destination control station 70 and the destination base station 80, and the cumulative relay delay value accumulated in the meantime together with the destination terminal 90 (S109).

Then, the called terminal 90 decides to reject the call if the cumulative relay delay value received through the called base station 80 exceeds the maximum end-to-end relay delay value specified by the calling terminal, and the called exchanger In order to notify the 60, a call progress message CALL PORCEEDING req.ind is delivered to the destination exchange 60 (s110). Thereafter, the terminal transmits a traffic channel allocation procedure (s111) and a notification message (ALERT req.ind) to the network side (s112 to s114), and reports the end-to-end relay delay service processing result in the connected message (CONNECTED req.ind). Include and forward to the originating network (s115 to s117).

At this time, the destination exchange 60 sends the connection message (CONNECTED req.ind) to the calling party and transmits it to the called terminal 90 again (s118), and the calling terminal 10 receives the connection information. In operation S119, the connection confirmation message CONNECTION ACKNOWLEDGE req.ind is transmitted to the originating exchange 40.

Through such a series of processes, the call between the calling terminal 10 and the called terminal 90 is started (s120).

In the conventional relay delay processing method, the receiver establishes a radio signal channel and a traffic channel regardless of whether the accumulated relay delay value exceeds the maximum end-to-end delay value specified by the calling user, and then authenticates the called user. , Encryption start, and temporary number (TMUI) assignment procedure was performed. That is, even if the cumulative relay delay value exceeds the maximum end-to-end relay delay value, setting the signal channel and the traffic channel unnecessarily uses expensive radio resources, and it causes authentication and encryption for the called user. In other words, a temporary number (TMUI) allocation procedure is unnecessary.

Accordingly, in the present invention, in order to compensate for the above-mentioned disadvantages, the relay delay processing is performed before the allocation of the signal channel or the radio traffic channel, so that the end-to-end relay delay service of the mobile communication system does not waste radio resources unnecessarily. To provide a treatment method.

In order to achieve the above object, the end-to-end relay delay service processing method of the mobile communication system provided by the present invention includes a cumulative relay delay value in a paging signal transmitted by the destination exchange to find a corresponding terminal. Receives the paging signal, compares the maximum end-to-end relay delay value with the cumulative relay delay value included in the paging signal, and transmits the result value to the calling party in response to the paging signal. If it is larger than the end-to-end relay delay value, the called terminal can reject the call transmitted from the calling terminal without assigning the signaling channel and the traffic channel, thereby efficiently using the expensive radio resource without wasting the called user. Subsequent processing such as authentication, encryption start, temporary number assignment procedures By preventing it from proceeding, the processing efficiency of the mobile communication network can be improved.

1 is a process procedure of a conventional end-to-end relay delay service,

2 is a flowchart of a process of end-to-end relay delay service according to an embodiment of the present invention;

3 is a structural diagram of a paging message;

4 is a structural diagram of a paging response message;

5 is a structural diagram of an initial address message;

6 is a structural diagram of a call connection information message;

7 is a structural diagram for response message.

<Explanation of symbols for main parts of drawing>

10: calling terminal 20: calling base station

30: originating control station 40: originating exchange

50: location register 60: incoming exchange

70 terminating control station 80 terminating base station

90: called terminal

Hereinafter, with reference to the accompanying drawings will be described in more detail the end-to-end relay delay service processing method of the present invention.

FIG. 2 is a flowchart of a process of end-to-end relay delay service according to an embodiment of the present invention. Referring to FIG. 2, the process of end-to-end relay delay service in a mobile communication system of the present invention is a conventional process method. Similarly, the originating terminal (MT_o) 10, the originating base station (BTS_o) 20, the originating control station (BSC_o) 30, the originating exchange (MSC_o) 40, the location register (HLR) 50, the destination exchange (MSC_t) 60, the terminating control station (BSC_t) 70, the terminating base station (BTS_t) (80), the destination terminal (MT-t) (90) proceeds sequentially, first, the originating terminal 10 When a call is requested to initiate this call, a call is set (s201) by the originating terminal 10, the originating base station 20, the originating control station 30, and the originating exchange 40 of the originating party.

At this time, when the user requests the end-to-end relay delay service from the calling party, the end-to-end relay delay is similar to the terminal setup message (SETUP request) requesting a call for call initiation in the call / connection protocol of the terminal as in the prior art. An information element is included and each intermediate node, that is, the originating base station 20, the originating control station 30, the originating exchange 40, the terminating exchange 60, the terminating control station 70, the terminating base station 80 Accumulate cumulative relay delays.

When the call is set up in this way, the originating exchange 40 transmits an initial address message (IAM) to the terminating exchange 60 (s202), and the terminating exchange 60 receiving the message is located in an area in which it has jurisdiction. A paging message is sent to a plurality of terminals belonging to the destination exchange 60. In operation 203, the destination exchange 60 sends a message (Appended-PAGING req.ind) including an end-to-end relay delay information element in the paging message.

At this time, the terminating control station 70 and the terminating base station 80 delivering the newly configured paging message (Appended-PAGING req.ind) accumulate cumulative relay delay values. This value is finally stored in the paging message by the destination base station and forwarded to the terminals.

The receiving terminal 90 receiving the paging message compares the received accumulated relay delay value with the maximum end-to-end relay delay value, and if it does not exceed, the paging response message without additional action to proceed with normal call. (Appended -PAGING RESPONSE req.ind) is delivered to the destination exchange 60 (s204). At this time, paging is performed for a plurality of terminals, and the paging response is performed by only one terminal targeted for the corresponding call. Therefore, terminals other than the called terminal do not end-to-end relay delay processing. After the paging response is completed, the called terminal performs a normal signal procedure (after s207) such as an authentication procedure (s208) while proceeding with the signal channel setup (s207) and the traffic channel setup (s212).

However, if the cumulative relay delay value received by the called terminal 90 exceeds the maximum end-to-end relay delay value, the terminal determines call rejection and transmits call rejection information to an Applied-PAGING RESPONSE req.ind. Load. This information is the information included in the CONNECTED req.ind in the prior art (see FIG. 1).

Thus, the called terminal 90, which has completed the paging response, determined that the call should be rejected. Therefore, the existing signaling channel assignment, incoming call authentication, encryption start, temporary number (TMUI) assignment procedure, and traffic channel assignment procedure are no longer performed. Do not proceed.

Meanwhile, the destination exchange 60 receiving the paging response recognizes the call rejection information by receiving the paging response and then transfers the call rejection information to the IAA message (Appended-IAA) to the originating exchange 40 (s205). do. That is, the IAA (Appended-IAA) message to which the call rejection information is added was a response to a simple IAM message in the existing B-ISDN. However, in the present invention, the message includes the result of processing for the end-to-end relay delay service. Is changed.

When call reject information is added to the IAA message as described above, the destination exchange 60 requests the call exchange 40 to call a fail (s206).

If the call reject information is not included, the called terminal 90 sets a signal channel by the called base station 80 and the called control station 70 (s207) and performs an authentication procedure for the calling terminal. (s208).

Meanwhile, the destination exchange 60 transmits a confirmation message (PAGING RESPONSE resp.conf) for the paging response to the destination terminal 90 (s209), and then sends a call request message (SETUP req.ind) to the destination terminal ( 90) (s210). At this time, since the processes related to the relay delay have been completed in steps s203 to s206, the call request message (SETUP req.ind) does not include accumulated relay delay time information.

The terminating terminal 90 receiving the call request message allocates a radio traffic channel by the terminating base station 80, the terminating control station 70 and the terminating exchange 60 (s211, s212).

Then, the process progress information (ACCESS LINK SETUP) is transmitted (s213 to s215) to the originating terminal 10 via the destination exchange 60 (s213 to s215), the call connection information (subtract CONNECT req. ind) is transmitted (s216 to s218) to the originating terminal 10 via the destination exchange 60.

At this time, the destination exchange 60 transmits the connected message (CONNECTED req.ind) to the calling party as in the conventional case, and then sends the message to the called terminal 90 again (s219), and the calling terminal 10 transmits the message. Receive the connection information, and transmits a connection confirmation message (CONNECTION ACKNOWLEDGE req.ind) to the originating exchange 40 (s220) so that the call is started (s221).

The method of the present invention can be applied to all of the code division multiple access (CDMA), time division multiple access (TDMA), and frequency division multiple access (FDMA) as a wireless access method of the mobile communication system.

The end-to-end relay delay processing procedure of the present invention is a portion in which a dotted line is changed as compared to the conventional method, and there is a difference in the form and role of the transmitted message as follows, compared to the conventional method. .

A schematic diagram of the configuration of these messages is shown in FIGS. 3 to 7.

3 is a structural diagram of a paging message, FIG. 4 is a structural diagram of a paging response message, FIG. 5 is a structural diagram of an initial address message, FIG. 6 is a structural diagram of a call connection information message, and FIG. 7 is a response message. It is a schematic diagram for.

First, referring to FIG. 3, a paging message (Appended-PAGING req.ind) including a accumulated relay delay value is used to request paging of a corresponding terminal (s203 of FIG. 2) when an incoming call of a mobile station is received. A message transmitted from a side exchange to a terminal through a control station and a base station. The information elements are described in terms of protocol discriminator (1), message type (2), and message length ( 3) information element identifier (4), length of paging ID (5), paging ID (6), information element identifier (7) A length of IMT-2000 USER ID (TMUI) (8), a mobile terminal user ID (IMT-2000 USER ID (TMUI)), and an information element identifier (10). ), Length of location area identify (11), location area identifier (12), species It consists of end-to-end transit delays 13.

At this time, up to 12 of the information elements are the same information elements as before, and 13 end-to-end relay delay information is information added in the present invention to include relay delay information accumulated in the paging signal.

Referring to FIG. 4, the paging response message is a message used by the called terminal to respond to a paging request (s204 in FIG. 2), and is transmitted from the called terminal to the exchange through the base station and the control station, which is included in the message. The information elements shown in FIG. 4 are the same information elements as those of the first to the fifteenth, and sixteen end-to-end relay delay information is added to provide the service of the present invention.

In this case, information 1 to 15, which is the same information as the conventional information element, is information that can be changed according to a radio access standard as an example of the conventional information elements.

Referring to FIG. 5, the modified IAA message is a response message for the initial IAM, and is transmitted from the destination exchange to the originating exchange (s205 in FIG. 2). In the case of the changed IAA message, the information from the first to the seventh is conventional information. The elements shown in FIG. 5 as elements are examples of information elements, and only eight end-to-end relay delay information are added information elements in the present invention.

On the other hand, the connection information message (CONNECTED req.ind) is a message transmitted to the calling terminal (s216 in Fig. 2) to inform the calling party that the call setup request has been accepted at the called party, the destination terminal to the base station, the control station It is transmitted to the exchange through the exchange, or from the source exchange to the terminal via the control station, the base station. Referring to FIG. 6, in the conventional case, the connection information message includes 10 information elements as shown in the drawing, but the present invention In this case, since the end-to-end relay delay information is transmitted from the terminal in the paging response (see FIG. 4), the tenth time is deleted. That is, the connection information message of the present invention includes information elements of items 1 to 9 of FIG. 6.

In addition, the ANM message shown in FIG. 7 is a response message sent by the called party to the calling party. Among the information elements, 1 to 9 and 11 to 26 may be referred to as existing information elements. Presented. However, information element 10 shown in Figure 7 must be deleted as an information element to be changed in the present invention. That is, in the present invention, the call history information of the 10th call is deleted when the ANM information is transmitted (s217 of FIG. 2).

On the other hand, the message (Fall-Fail) (s206 of FIG. 2) transmitted when the call is rejected from the called terminal is a message that informs the result that the call was rejected, although not shown in the figure, includes call rejection information.

In order to perform the processing of the present invention by the messages having the above-described configuration, the order of the signal messages must be followed. Referring to the configuration of the present invention with reference to the above-mentioned messages, the first, FIG. When the destination exchange transmits a paging message having a configuration as shown to 3 to the terminals, the destination terminal transmits a paging response message as shown in FIG. 4 to the destination exchange, and the destination exchange that receives the signal is connected to FIG. 5. When the originating exchange receiving the IAA message determines that the call is rejected, it transmits a call rejection message to the originating control station. When the originating exchange determines that the call is accepted, the called party initiates the call. To perform the processing.

The end-to-end relay delay service processing method of the mobile communication system according to the present invention uses a paging message before the destination terminal receives the setup signal message, that is, before the signal channel allocation and the traffic channel allocation, the base station searches for the terminal. By dealing with the end-to-end relay delay service, it is possible to efficiently use expensive radio resources, and it also eliminates authentication, encryption start, and temporary number (TMUI) assignment procedures for the called user. The advantage is that it can be removed.

Claims (2)

In the end-to-end relay delay service processing method of a mobile communication system, A first process of receiving a call request from a calling party and including a cumulative relay delay value in a paging signal transmitted to a called terminal to find a corresponding terminal; The called terminal receiving the paging signal compares the cumulative relay delay value included in the paging signal with a preset maximum end-to-end relay delay value and rejects the call if the accumulated relay delay value is greater than the maximum end-to-end relay delay value. A second process of generating a signal and generating a call accept signal if the cumulative relay delay value is less than the maximum end-to-end relay delay value; A third process of transmitting the call rejection or acceptance signal generated in the second process to the destination exchange by including the paging response signal; A fourth step of, when the called exchange transmits a call rejection or acceptance signal received from the called terminal to the calling party, the calling party determines whether to reject the call according to the received signal and terminates the call processing process when the call is rejected; A fifth step of initiating a call between the calling party and the called party by setting up a signaling channel and a wireless traffic channel at the called party at the calling party and transmitting the call connection information to the calling party and confirming the call connection at the calling party. End-to-end relay delay service processing method of a mobile communication system, characterized in that consisting of a process. The method of claim 1, wherein the call connection information of the fifth process A method for processing end-to-end relay delay services in a mobile communication system, characterized by not including end-to-end relay delay information elements.