KR100276719B1 - Call waiting method in wireless communication system - Google Patents

Abstract

The present invention provides a method of waiting for a call while a wireless called subscriber is located on a network. The present invention provides reliable and complete feedback to the calling party while the called party is on the network. In addition, the present invention provides a method for eliminating undesired " Time-Outs " occurring in a network because of the long delay for call setup completion caused by the called subscriber location difficulties.

A preferred embodiment of the present invention provides a connection method between a calling party and a called party in a network including a wired communication and a wireless communication section. This method performs call setup at the called party when there is a call initiation of the calling party, and waits for a call while continuing to set up call at the called party before the process of positioning the called party in the network is completed. While setting up the called party location, the calling party hears a call handling indicator of the tone or recorded message. After receiving the location response, the call handling indicator ends and the calling party and the called party connect.

Another preferred embodiment of the present invention will provide a method of handling a call when there is no connection between a calling party and a called party on a network including a wired communication section and a wireless communication section. This method performs call setup at the called party according to the call initiation by the calling party, and if the called party is placed on the network while waiting for the call while continuing the call setup at the called party prior to setting the called party location in the network. The call subscriber is connected to the first means for providing a call handling indicator while is established. If the attempt to locate the called party in the network fails, the calling party is switched from the first means of providing a call handling indicator to the second means of providing a call connection failure indicator. A voice message is preferred as a connection failure indicator, and the voice message may include calling party definition options such as an option to leave a voice mail message to the called party, an option to send a call to another called party, and / or a call termination option. have.

According to another embodiment of the present invention, the present invention can be applied to a network including an integrated wired-wireless communication section as well as a conventional wireless communication and wired communication structure.

Description

Call waiting method in wireless communication system

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wireless communication system, and more particularly, to a method of parking call while a wireless user is located in a wireless communication system.

Since wireless communication has become commonplace, wireless communication users require that wireless communication services be as easy to use as conventional wireline services. As used throughout this specification, "wireless" refers to a wide range of technical fields and communication systems that use an open air interface, as opposed to systems connected by landline. Mobile telephones, cellular telephones, wireless local-loops, paging, personal communication services (PCS) are the wireless communication to which the present invention can be applied. A good example of a system.

The term "wireline" generally refers to global network components associated with a Public Switched Telephone Network (PSTN). As illustrated in Figures 1 through 3, the global network to be described in detail in the future is wireless It may appear to include telecommunications and wired communications, and the main source of this distinction between arbitrary wired and wireless, at least in terms of software and database overhead, is continued regulation on wireless and wired providers in the United States. The distinction between the two sections will disappear as the performance of network components improves and will disappear with the future deregulation of Telecommunications. It should not be argued that the typical distinction between wireless and wired is claimed. Must see that the chapter and outline of network components and cooperation in the regulatory context and ...

As used herein, the term "call" should be construed broadly to indicate not only telephone calls in the conventional sense, but also network access requests such as data and voice made by personal mobile communications and radio calling systems. .

Wireless communication users' expectations that the wireless communication service will be like a conventional wired communication service are often frustrated by technical and semiotic logic inherent in providing a wireless communication service. For example, communication users, wired or wireless, do not want to wait while the wireless communication user is located in the network. Rather, users expect that the network's response and execution to the call connected to the wireless communication user will match the response and execution of the call connected to the wired communication user. It is difficult to meet the expectations of these users because there can never be a significant delay in locating wired communication users. The process of locating a wireless communication user compared to wired is not only complicated but also time consuming.

Many prior arts have addressed this problem. One of them, the Called Party, is a ring tone while the network locates the Called Party, as if the actual connection has already been established between itself and the called party on the network. Receive (Ring Tone). If the location of the called party is established and a connection is established, the call connection continues normally. However, if the location of the called party is not set, the calling party is notified that it is not connected. Since the notification is made after one or more rings normally informing the call connection, this "Call Faking" could potentially confuse the calling party. In addition, conventional standards for the design and operation of telecommunication networks have suppressed the response of two different indicators to a single network event.

Until technical improvements and basic facility improvements resolve the problem in other ways, some key points on the network may not be able to communicate with the called wireless subscribers in the network due to the default timing protocol at some key points. The likelihood of a connection failure is very substantial and increasing. In other words, because the process of locating a wireless user on a network takes longer than the time allowed by the timer and time-out protocol among the various network components, the call with the wireless communication user will fail. .

Referring to FIG. 1, the problem is described in more detail. The calling party 110 (here a wired communication user, but later also applies to a wireless calling party) generates a call and the call is a call termination setup on the wired communication section 100 of the network (1s). ). The wired communication section 100 and the wireless communication section 200 cooperate in a conventional manner for positioning of the called party 210 on the network (s2 and s3).

According to the conventional method, the wireless communication user 210 is paged on the wireless communication section 200. Due to the nature of the contemporary paging algorithms and air interface technology, as well as the timing protocol (i.e. paging timer) between the mobile stations and the control element in the wireless communication section 200, this process is at least 35 seconds. This may take place and affects the positioning time of the called party 210.

Once the location has been successfully established, the calling party's mobile unit reverses the conventional location response to the wired communication section 100 via the wireless communication section 200 (s4 and s5), where The components of the calling party 110 and the called party are waiting for call setup to be completed (s6).

During the delay time required for the positioning of the called party, many timers, such as: (a) network timers such as The User Part of ISDN (ISP), Common Associated Signaling (CAS), SS7; (b) a standard class 5 switch and a destination (service start) timer in the MSC; (c) A wireless communication base station timer, typically within a base station controller (BSC). One of the timers may end waiting for some call answering indicator from the called party.

An object of the present invention is to provide a call waiting method in a wireless communication system in order to solve the above problems.

1 is a diagram illustrating a wireless communication user location setting problem in an existing network.

2 is a diagram illustrating an existing network structure to which the method of the present invention can be applied.

3 is a diagram illustrating an integrated wireless / wireline system (IWWS) structure to which the method of the present invention may be applied.

4 is a flowchart illustrating a first embodiment of the present invention.

5 is a flowchart illustrating a second embodiment of the present invention.

<Description of Symbols for Main Parts of Drawings>

100: wired communication section 110: wired telephone

112: MSC 114: PSTN

116: AINSCP 118: switch

200: wireless communication section 210: mobile terminal

220: BSS 240: BSCP

Summary of the invention

The present invention provides a method of waiting for a call while a wireless called subscriber is located on a network. The present invention provides reliable and complete feedback to the calling party while the called party is on the network. In addition, the present invention provides a method for eliminating undesired " Time-Outs " occurring in a network because of the long delay for call setup completion caused by the called subscriber location difficulties.

A preferred embodiment of the present invention provides a connection method between a calling party and a called party in a network including a wired communication and a wireless communication section. This method performs call setup at the called party when there is a call initiation of the calling party, and waits for a call while continuing to set up call at the called party before the process of positioning the called party in the network is completed. While setting up the called party location, the calling party hears a call handling indicator of the tone or recorded message. After receiving the location response, the call handling indicator ends and the calling party and the called party connect.

Another preferred embodiment of the present invention will provide a method of handling a call when there is no connection between a calling party and a called party on a network including a wired communication section and a wireless communication section. This method performs call setup at the called party according to the call initiation by the calling party, and if the called party is placed on the network while waiting for the call while continuing the call setup at the called party prior to setting the called party location in the network. The call subscriber is connected to the first means for providing a call handling indicator while is established. If the attempt to locate the called party in the network fails, the calling party is switched from the first means of providing a call handling indicator to the second means of providing a call connection failure indicator. A voice message is preferred as a connection failure indicator, and the voice message may include calling party definition options such as an option to leave a voice mail message to the called party, an option to send a call to another called party, and / or a call termination option. have.

According to another embodiment of the present invention, the present invention can be applied to a network including an integrated wired-wireless communication section as well as a conventional wireless communication and wired communication structure.

<Detailed description of the invention>

The present invention can be used in various network structures. For example, FIG. 2 illustrates a representative second generation wireless communication system. The existing system has a feature of combining a Public Switched Subsystem (PSTN) 114 and a Mobile Switching Center (MSC) 112 within a wired communication section 100. The wireless communication section 200 generally includes a base station subsystem (BSS) 220 having a series of transceivers for communicating with a plurality of terminals. Detailed descriptions of the components shown above can be found in Rappaport, T.S., Wireless Communications: Principles and Practice, Chapters 8-10, Prentice Hall, Inc. It is also well described in Upper Saddle River, New Jersey (1996). The present invention can be easily implemented in the MSC of such existing structure.

The invention may also be implemented in an integrated wired / wireless system (IWWS) architecture, which is disclosed in the "Integrated Wireline-Wireless System" filed with the US Patent Office on October 2, 1997, which is incorporated herein by reference. ..

As shown in FIG. 3, in the IWWS structure, the wired communication section 100 is composed of a switch 118, more preferably a class 5 switch and an Advanced Intelligent Network Service Control Point (ANSCP). The wireless communication section 200 includes a BSS 220 and a VSCP (Visiting Service Control Point) 240. The structure and function of such components are described in the above mentioned US application.

A first preferred embodiment of the present invention will now be described with reference to the flowchart of FIG. 4. If there is a call initiation by the calling party (s400), the call is received at the destination, usually at the end switch in the PSTN (s402). The call is waiting at the called point, and call connection establishment is performed while the called party establishes a location (s404). The call handling indicator is supplied to the calling party during the positioning of the called party in the wireless communication section 210 (s406). If the location is set (s408), the terminal of the called party transmits the location response (s410), the call handling indicator is terminated (s412), and the connection between the called party and the calling party is completed (s414).

Call setup is performed at the called point while the calling party is located, and the timer and timing protocol undesirably time out at the called point while the positioning of the called party is delayed within the wireless communication section 210 of the network. To prevent it.

The calling party receives reliable and complete feedback through the call handling indicator during the delay. This call handling indicator indicates and announces that the network is attempting to locate the called party with an audio tone or a pre-recorded or similar message. For example, a call handling indicator in a network that provides an analog connection between a terminating switch and a PSTN may be several kinds of notes or other specific voice signals. However, if the network provides a digital connection between the destination exchange and the PSTN, such as inside the ISUP, the call handling indicator will be a voice message such as "The called party location is being set."

5 is a flowchart illustrating a second embodiment of the present invention in the case where a failure for a connection occurs. The terminal may not be connected because the called party's terminal is powered off, missing on the network or located in a path where current propagation is drastically reduced.

Steps s400 to s410 are as described above. However, if it is confirmed that no connection is made in the network (s510), the call handling indicator is terminated, and the call connection failure indicator is provided to the calling party (s520). The call connection failure indicator may be a simple voice message indicating that the called party is not connected, or the calling party may provide various menu options so that the calling party may actively respond to the failure of the connection attempt. The call connection failure indicator may include an option to leave a voice message to the called party, an option to attempt to connect to another number, or an option to terminate the call. Any option menu can be selected at the discretion of the calling party.

In the IWWS structure shown in Fig. 3, the present invention can be easily implemented using the characteristics of the Advanced Intelligent Network (AIN). For example, referring to Figures 4 and 5, the step of initiating a call at the destination of step s402 is performed at the class 5 exchange 118 in the wired communication section of the IWWS structure. When performing such termination, a corresponding termination attempt trigger is generated inside the exchange 118 and sent to the AINSCP 116. Accordingly, step s404 of waiting for a call at the Termination Point and continuing the call setup includes detecting a incoming call trigger and providing a call handling indicator with a first means for providing a call handling indicator to the calling party. AINSCP 116 sends (s406) a resource message to the exchange 118 requesting the switch to route an Incoming Call.

In addition, when the called party sends back a location response to the wireless communication section (s410), the AINSCP 116 instructs the switch 118 to disconnect the first means and complete the call connection (s412). , s414 and s500). If no call connection is established, AINSCP 116 instructs switch 118 to switch the calling party from the first means providing a call handling indicator to the second means providing a call connection failure indicator. (S520).

In a general architecture, the present invention continues to provide the calling party with clear user options with accurate and complete feedback. In addition, the network does not accidentally time out a call connection attempt due to a called subscriber location delay.

The above described embodiments and detailed description are given by way of example. Those skilled in the art will recognize the rapid development of the network structure and will readily appreciate that the present invention is not only the presently selected embodiment but may also be applied to future structures. The invention is not limited to the above embodiments in its application, but is defined by the appended claims.

<Abstract>

A method of waiting a call while a wireless communication user is located in a network is disclosed. The method provides positive feedback to a calling party and provides a method for establishing a call connection on a network due to a long delay in positioning a called party. Prevent unwanted timeouts.

Claims (18)

In networks that include wired and wireless communications Performing call establishment at the called point if there is a call initiation of the calling party Waiting for the call and establishing a call continuously at the called point prior to positioning of the called subscriber on the network; Sending a call handling indicator to the calling party; Establishing the location of the called subscriber on the network; Receiving a location response from the called party after the positioning of the called party on the network is completed; And Terminating a call handling indicator after receiving the location response and connecting a calling party and a called party. 2. The method of claim 1, wherein the call handling indicator is an audio tone. 2. The method of claim 1 wherein the call handling indicator is a voice message. In networks that include wired and wireless communications, Performing call establishment at the called point if there is a call initiation of the calling party; Waiting for the call and continuously establishing a call at the called point prior to establishing a called party location on the network; Sending a call handling indicator to the calling party; And Attempting to establish the location of the called party on the network, terminating a call handling indicator if the location fails, and sending a call connection failure indicator to the calling party; Processing method 5. The method of claim 4, wherein the call handling indicator is selected from the group consisting of an audio tone and a first voice message. 6. The method of claim 5, wherein the call connection failure indicator is a second voice message. 5. The method of claim 4, further comprising providing a call connection failure indicator with a calling party definition option menu. 8. The calling party definition option menu according to claim 7, wherein: Leaving a voice message for the called party; Call forwarding options to third parties; And A method of handling a failed connection between a calling party and a called party comprising at least one of the call release options In a network with an integrated wired and wireless communication structure that integrates wired and wireless communication sections, Receiving a call within a wired communication section when the calling party initiates a call; Waiting for the call and continuously establishing a call in a wired communication section prior to establishing the called subscriber location in a wireless communication section; Providing a call handling indicator to the calling party; Setting a location of the called subscriber within the wireless communication section; Receiving a location response of the called subscriber through a wireless communication section in a wired communication section when the step of setting the called subscriber location in the wireless communication section is completed; And And the call handling indicator is terminated and a connection is made between the calling party and the called party. 10. The method of claim 9, wherein when the calling party initiates the call, terminating the call within the wired communication section, And ending a call to a switching device within a wired communication section according to a call initiation of the calling party, and generating a corresponding call termination attempt trigger. . 11. The method of claim 10, wherein the switching device is a class 5 exchange. 11. The method of claim 10, wherein the step of continuously setting up a call in a wired communication section prior to waiting for the call and setting a position of called party in the network, Retrieving the incoming challenge trigger at an AIN service control point associated with the switching device; And Sending, by the AIN service control point, to the switching device a resource message requesting the switching device to route the call to a first means for providing the call handling indicator to the calling party. To connect the calling party and the called party 13. The method of claim 12, wherein the call handling indicator is selected from the group consisting of an audio tone and a voice message. On a network with an integrated wired / wireless communication structure that integrates wired and wireless communications, When the calling party initiates a call, transmitting a call inside a class 5 exchange within a wired communication section, and generating an incoming call trigger; Retrieving an incoming challenge trigger at an AIN service control point associated with the class 5 switch; The AIN service provides a resource message requesting the class 1 exchange to route the call to a first means for providing a call handling indicator to the calling party prior to establishing the called party location in a wireless communication interval. Sending by the control point to the class 5 exchange: If attempting to locate a called party within a wireless communication section fails to establish a location, it will reroute the calling party to a second means for sending a call connection failure indicator from the first means to the calling party to the Class 5 exchange. Sending, by the AIN service control point to the class 5 exchange, another resource message requesting to request the request to the Class 5 exchange. 15. The method of claim 14, wherein the call handling indicator is selected from the group consisting of an audio tone and a first voice message. 16. The method of claim 15, wherein the call connection failure indicator is a second write message. 17. The method of claim 16, wherein the call connection failure indicator comprises a calling party definition option menu. 18. The method of claim 17, wherein the calling party definition option is. Option to leave a voice message to the called party: Sending the call to a third called party; And And at least one of said call release options.