KR20120129349A - Mobile terminal and service capability discovery method thereof - Google Patents

Abstract

PURPOSE: A portable terminal and service capability discovery method are provided to discover capability without increasing loads and without reducing the performance of a terminal in an RCS-e(Rich Communication Suite-enhanced) service. CONSTITUTION: A memory unit(160) stores a plurality of connection number groups classified by orders. When an RCS-E service is executed, a control unit(180) transmits an SIP(Session Initiation Protocol) option message to the plurality of the classified connection number groups. The control unit discovers the capability of the service. An address includes a phone book or other addresses stored in an external apparatus. The orders are set by significance, time sequence, and frequency. [Reference numerals] (110) Wireless communication unit; (111) Broadcast receiving module; (112) Mobile communication module; (113) Wireless internet module; (114) Local area communication module; (115) Location information module; (120) A/V input unit; (121) Camera; (122) Microphone; (130) User input unit; (140) Sensing unit; (141) Proximity sensor; (150) Output unit; (151) Display unit; (152) Sound output module; (153) Alarm unit; (154) Haptic module; (160) Memory unit; (170) Interface unit; (180) Control unit; (181) Multimedia module; (190) Power supply unit

Description

Mobile terminal and its service capability discovery method {MOBILE TERMINAL AND SERVICE CAPABILITY DISCOVERY METHOD THEREOF}

The present invention relates to a mobile terminal and a service capability discovery method thereof, which can prevent performance degradation of a mobile terminal and load of a network when performing an RCS-e service.

The mobile terminal may be configured to perform various functions. Examples of such various functions include a data and voice communication function, a function of photographing a video or a moving image through a camera, a voice storage function, a music file playback function through a speaker system, and an image or video display function. Some mobile terminals include additional functionality to play games, while others are implemented as multimedia devices. Moreover, recent mobile terminals can receive broadcast or multicast signals to watch video or television programs.

Further, efforts for supporting and increasing the functions of the mobile terminal continue. The foregoing efforts include not only changes and improvements in the structural components forming the mobile terminal, but also improvements in software or hardware. Among them, the touch function of the mobile terminal allows a user who is unfamiliar with the button / key input to conveniently perform the operation of the terminal by using the touch screen. In recent years, not only simple input but also user interface (UI) Is becoming an important function of Accordingly, as the touch function is applied to a mobile terminal in various forms, development of a user interface (UI) corresponding thereto is further demanded.

Recently, the Global System for Mobile Communications Association (GSMA) improved the version of the Rich Communication Suite (RCS) service: RCS-, which allows users to make video or voice calls while simultaneously transferring files such as instant chat, music, photos and documents. e (enhanced) has been newly announced.

The RCS-e service excludes presence information from among IM (Instant Messaging) (Chat), file transfer, contents sharing and presence information functions performed by the RCS service. A service that performs a function.

In other words, the RCS service uses the presence server reel to register the other party as My Buddy and continuously monitors the personal information of the other party. Capability Discovery function is performed. However, the social presence function is excluded from the RCS-e service, and the capability discovery is obtained by using a Session Initiation Protocol (SIP) OPTIONS message.

In other words, since the RCS service manages and notifies the status information of each terminal in a separate presence server, each terminal can know the capability (or capability) of the other terminal, but in the RCS-e service, the presence server itself is not known. Since it is not used, each terminal requests the status information of the other terminal using the SIP OPTIONS message.

Therefore, when the RCS service is started after booting, the mobile terminals sequentially transmit SIP OPTIONS messages to all contacts in the phonebook to exchange service capability discovery information in order to know the capability of the counterpart terminal.

However, compared to the existing phone book, various network-based phone books such as NAB (Network Address Book) contain more (hundreds to thousands) of contacts. On the terminal side, performance may be degraded, and on the network side, the load may be increased.

However, the current RCS-e service describes a basic communication service, and defines only the capability of performing capability discovery by sending a SIP OPTIONS message, but does not define the details. Detailed implementation method considering UNIX or UX related scenario is not described.

It is an object of the present invention to provide a mobile terminal capable of performing capability discovery without degrading performance of a terminal and increasing network load in an RCS-e service and a method of performing the capability discovery thereof.

Another object of the present invention is to provide a mobile terminal capable of selectively performing capability discovery according to a user setting or an environment in an RCS-e service, and a method of performing the capability discovery thereof.

According to an aspect of the present invention, there is provided a service capability discovery method of a mobile communication terminal, comprising: classifying a contact into a plurality of groups according to priorities; And performing capability discovery of a service by transmitting a SIP OPTIONS message to the classified plurality of contact groups.

The contact includes a contact stored in a phone book or an external device, and the service is a Rich Communication Suite-Enhanced (RCS-e) service.

The priorities include importance, recent (chronological), least frequent (frequency), service-specific and user-specific settings.

The plurality of groups are set differently in size and processing time according to their priority. For example, the transmission time of the SIP OPTIONS message of the high priority contact group is set longer than the low priority contact group. In addition, the size of the high priority contact group is set so that capability discovery is completed faster than the low priority contact group.

The service capability discovery method of the mobile terminal may further include informing the contacts of each group of priorities of the changed service capability through the SIP OPTIONS message.

The priority of the service capability includes a priority of a plurality of services selected by a user in a menu or a priority of a service automatically changed by the controller according to the surrounding environment. The plurality of services are currently available and include voice calls, video calls, video sharing, email, chat and file transfer.

According to an aspect of the present invention, there is provided a mobile communication terminal comprising: a memory configured to store a plurality of groups classified as contacts according to priority; And a control unit for performing capability discovery of a service by transmitting a SIP OPTIONS message to the classified contact groups when a Rich Communication Suite-Enhanced (RCS-e) service is started.

The contact may include a contact stored in a phone book or an external device, and the priority may include setting of importance, recent (chronological), least frequent (frequency), service-specific, and user-specific.

The plurality of groups are set differently in size and processing time according to their priority. Preferably, the transmission time of the SIP OPTIONS message of the high priority contact group is set longer than the low priority contact group. In addition, the size of the high priority contact group is set so that capability discovery is completed faster than the low priority contact group.

The control unit informs the contacts of each group of priority of the changed service capability through the SIP OPTIONS message.

The priority of the service capability includes a priority of a plurality of services changed by a user in a menu or a priority of a service automatically changed by a control unit according to the surrounding environment. Preferably, the plurality of services are available services and include voice calls, video calls, video sharing, email, chat and file transfer.

According to the present invention, when the presence server is excluded and the service capability discovery is performed through the SIP OPTIONS message between the mobile terminals to know the status of the counterpart terminal, the SIP OPTIONS message has a different priority. By classifying and transmitting, the performance of the originating terminal is not degraded and there is almost no load on the network.

In addition, the present invention transmits the service capability priority selected by the user (modified) together when performing the service capability discovery through the SIP OPTIONS message, so that the counterpart user can more easily type the currently available communication service of the calling user. It is effective to know the state.

1 is a block diagram of a mobile terminal according to an embodiment of the present invention;
2 is a block diagram of a wireless communication system in which a mobile terminal may operate in accordance with an embodiment of the present invention.
3 is a diagram illustrating types of services provided by existing RCS services and RCS-e (enhanced) services.
4 illustrates an example of performing capability discovery by transmitting a SIP OPTIONS message in a general RCS-e service.
5 illustrates an example of performing capability discovery by transmitting a SIP OPTIONS message according to priority in an RCS-e service according to the present invention.
6A and 6B illustrate an example of changing a priority of a service in an RCS-e service.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments disclosed herein will be described in detail with reference to the accompanying drawings, and the same or similar components will be given the same reference numerals regardless of the reference numerals, and redundant description thereof will be omitted. The suffix "module" and " part "for the components used in the following description are given or mixed in consideration of ease of specification, and do not have their own meaning or role. In the following description of the embodiments of the present invention, a detailed description of related arts will be omitted when it is determined that the gist of the embodiments disclosed herein may be blurred. In addition, it should be noted that the attached drawings are only for easy understanding of the embodiments disclosed in the present specification, and should not be construed as limiting the technical idea disclosed in the present specification by the attached drawings.

The mobile terminal described herein may include a mobile phone, a smart phone, a laptop computer, a digital broadcasting terminal, a personal digital assistant, a portable multimedia player (PMP), navigation, and the like. However, it will be readily apparent to those skilled in the art that the configuration according to the embodiments described herein may also be applied to fixed terminals such as digital TVs, desktop computers, etc., except when applicable only to mobile terminals.

1 is a block diagram illustrating a mobile terminal according to one embodiment disclosed herein.

The mobile terminal 100 includes a wireless communication unit 110, an audio / video input unit 120, a user input unit 130, a sensing unit 140, an output unit 150, a memory 160, A controller 170, a controller 180, a power supply 190, and the like. The components shown in FIG. 1 are not essential, and a mobile terminal having more or fewer components may be implemented.

Hereinafter, the components will be described in order.

The wireless communication unit 110 may include one or more modules for enabling wireless communication between the mobile terminal 100 and the wireless communication system or between the mobile terminal 100 and the network in which the mobile terminal 100 is located. For example, the wireless communication unit 110 may include a broadcast receiving module 111, a mobile communication module 112, a wireless Internet module 113, a short range communication module 114, and a location information module 115 .

The broadcast receiving module 111 receives a broadcast signal and / or broadcast related information from an external broadcast management server through a broadcast channel. The broadcast-related information may refer to a broadcast channel, a broadcast program, or information related to a broadcast service provider. The broadcast related information may also be provided through a mobile communication network. In this case, it may be received by the mobile communication module 112. The broadcast signal and / or broadcast related information received through the broadcast receiving module 111 may be stored in the memory 160.

The mobile communication module 112 transmits and receives radio signals to at least one of a base station, an external terminal, and a server on a mobile communication network. The wireless signal may include various types of data depending on a voice call signal, a video call signal or a text / multimedia message transmission / reception.

The wireless Internet module 113 is a module for wireless Internet access, and may be built in or externally attached to the mobile terminal 100. Wireless Internet technologies may include Wireless LAN (Wi-Fi), Wireless Broadband (Wibro), World Interoperability for Microwave Access (Wimax), High Speed Downlink Packet Access (HSDPA), and the like.

The short range communication module 114 refers to a module for short range communication. Bluetooth, Radio Frequency Identification (RFID), Infrared Data Association (IrDA), Ultra Wideband (UWB), ZigBee, and the like can be used as a short range communication technology.

The position information module 115 is a module for obtaining the position of the mobile terminal, and a representative example thereof is a Global Position System (GPS) module.

Referring to FIG. 1, an A / V (Audio / Video) input unit 120 is for inputting an audio signal or a video signal, and may include a camera 121 and a microphone 122. The camera 121 processes image frames such as still images or moving images obtained by the image sensor in the video call mode or the photographing mode. The processed image frame can be displayed on the display unit 151. [

The image frame processed by the camera 121 may be stored in the memory 160 or transmitted to the outside through the wireless communication unit 110. [ Two or more cameras 121 may be provided depending on the use environment.

The microphone 122 receives an external sound signal by a microphone in a call mode, a recording mode, a voice recognition mode, etc., and processes the external sound signal into electrical voice data. The processed voice data can be converted into a form that can be transmitted to the mobile communication base station through the mobile communication module 112 when the voice data is in the call mode, and output. Various noise reduction algorithms may be implemented in the microphone 122 to remove noise generated in receiving an external sound signal.

The user input unit 130 generates input data for a user to control the operation of the terminal. The user input unit 130 may include a key pad dome switch, a touch pad (static pressure / capacitance), a jog wheel, a jog switch, and the like.

The sensing unit 140 senses the current state of the mobile terminal 100 such as the open / close state of the mobile terminal 100, the position of the mobile terminal 100, the presence or absence of user contact, the orientation of the mobile terminal, And generates a sensing signal for controlling the operation of the mobile terminal 100. For example, when the mobile terminal 100 is in the form of a slide phone, it may sense whether the slide phone is opened or closed. In addition, whether the power supply unit 190 is supplied with power, whether the interface unit 170 is coupled to the external device may be sensed. The sensing unit 140 may include a proximity sensor 141.

The output unit 150 is used to generate an output related to visual, auditory or tactile senses, and may include a display unit 151, an audio output module 153, an alarm unit 154, and a haptic module 155. have.

The display unit 151 displays (outputs) information processed by the mobile terminal 100. For example, when the mobile terminal is in the call mode, a UI (User Interface) or a GUI (Graphic User Interface) associated with a call is displayed. When the mobile terminal 100 is in the video communication mode or the photographing mode, the photographed and / or received video or UI and GUI are displayed.

The display unit 151 includes a liquid crystal display (LCD), a thin film transistor-liquid crystal display (TFT LCD), an organic light-emitting diode (OLED), and a flexible display (flexible). display, a 3D display, or an e-ink display.

Some of these displays (or display elements) may be configured to be transparent or light transmissive so that they can be seen from the outside. This can be referred to as a transparent display, and a typical example of the transparent display is TOLED (Transparent OLED) and the like. The rear structure of the display unit 151 may also be of a light transmission type. With this structure, the user can see an object located behind the terminal body through the area occupied by the display unit 151 of the terminal body.

There may be two or more display units 151 according to the embodiment of the mobile terminal 100. For example, in the mobile terminal 100, a plurality of display portions may be spaced apart from one another, or may be disposed integrally with one another, and may be disposed on different surfaces, respectively.

(Hereinafter, referred to as a 'touch screen') in which a display unit 151 and a sensor for sensing a touch operation (hereinafter, referred to as 'touch sensor') form a mutual layer structure, It can also be used as an input device. The touch sensor may have the form of, for example, a touch film, a touch sheet, a touch pad, or the like.

The touch sensor may be configured to convert a change in a pressure applied to a specific portion of the display unit 151 or a capacitance generated in a specific portion of the display unit 151 into an electrical input signal. The touch sensor can be configured to detect not only the position and area to be touched but also the pressure at the time of touch.

If there is a touch input to the touch sensor, the corresponding signal (s) is sent to the touch control unit. The touch control unit processes the signal (s) and then transmits corresponding data to the controller 180. As a result, the controller 180 can know which area of the display unit 151 is touched.

The audio output module 153 can output audio data received from the wireless communication unit 110 or stored in the memory 160 in a call signal reception mode, a call mode or a recording mode, a voice recognition mode, a broadcast reception mode, The sound output module 153 also outputs sound signals related to functions (e.g., call signal reception sound, message reception sound, etc.) performed in the mobile terminal 100. [ The sound output module 153 may include a receiver, a speaker, a buzzer, and the like.

The alarm unit 154 outputs a signal for notifying the occurrence of an event of the mobile terminal 100. Examples of events that occur in the mobile terminal include call signal reception, message reception, key signal input, touch input, and the like. The alarm unit 154 may output a signal for notifying occurrence of an event in a form other than a video signal or an audio signal, for example, vibration. The video signal or the audio signal may be output through the display unit 151 or the audio output module 153, so that they 151 and 153 may be classified as part of the alarm unit 154.

The haptic module 155 generates various tactile effects that a user can feel. A typical example of the haptic effect generated by the haptic module 155 is vibration. The intensity and pattern of vibration generated by the haptic module 155 can be controlled. For example, different vibrations may be synthesized and output or sequentially output.

In addition to the vibration, the haptic module 155 may be configured to perform various functions such as a pin arrangement vertically moving with respect to the contact skin surface, a spraying force or a suction force of the air through the injection port or the suction port, a touch on the skin surface, contact with an electrode, And various tactile effects such as an effect of reproducing a cold sensation using an endothermic or exothermic element can be generated.

The haptic module 155 can be implemented not only to transmit the tactile effect through the direct contact but also to allow the user to feel the tactile effect through the muscular sense of the finger or arm. At least two haptic modules 155 may be provided according to the configuration of the mobile terminal 100.

The memory 160 may store a program for the operation of the controller 180 and temporarily store input / output data (e.g., a phone book, a message, a still image, a moving picture, etc.). The memory 160 may store data on vibration and sound of various patterns outputted when a touch is input on the touch screen.

The memory 160 may be a flash memory type, a hard disk type, a multimedia card micro type, a card type memory (for example, SD or XD memory), RAM random access memory (RAM), static random access memory (SRAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), programmable read-only memory (PROM), magnetic memory, magnetic It may include a storage medium of at least one type of disk, optical disk. The mobile terminal 100 may operate in association with a web storage that performs a storage function of the memory 160 on the Internet.

The interface unit 170 serves as a path for communication with all external devices connected to the mobile terminal 100. The interface unit 170 receives data from an external device, receives power, transfers the power to each component inside the mobile terminal 100, or transmits data inside the mobile terminal 100 to an external device. For example, a wired / wireless headset port, an external charger port, a wired / wireless data port, a memory card port, a port for connecting a device having an identification module, an audio I / O port, A video input / output (I / O) port, an earphone port, and the like may be included in the interface unit 170.

The identification module is a chip for storing various information for authenticating the usage right of the mobile terminal 100 and includes a user identification module (UIM), a subscriber identity module (SIM), a general user authentication module a universal subscriber identity module (USIM), and the like. Devices with identification modules (hereinafter referred to as "identification devices") can be manufactured in a smart card format. Accordingly, the identification device can be connected to the terminal 100 through the port.

The interface unit may be a passage through which power from the cradle is supplied to the mobile terminal 100 when the mobile terminal 100 is connected to an external cradle, or various command signals input from the cradle by a user may be transferred. It may be a passage that is delivered to the terminal. The various command signals or the power source input from the cradle may be operated as a signal for recognizing that the mobile terminal is correctly mounted on the cradle.

The controller 180 typically controls the overall operation of the mobile terminal. For example, voice communication, data communication, video communication, and the like. The control unit 180 may include a multimedia module 181 for multimedia playback. The multimedia module 181 may be implemented in the control unit 180 or may be implemented separately from the control unit 180. [

The power supply unit 190 receives external power and internal power under the control of the controller 180 and supplies power necessary for operation of the respective components.

The various embodiments described herein may be embodied in a recording medium readable by a computer or similar device using, for example, software, hardware, or a combination thereof.

According to a hardware implementation, the embodiments described herein include application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs). It may be implemented using at least one of a processor, controllers, micro-controllers, microprocessors, and electrical units for performing other functions. In some cases, the embodiments described herein may be implemented by the controller 180 itself.

According to the software implementation, embodiments such as the procedures and functions described herein may be implemented as separate software modules. Each of the software modules may perform one or more of the functions and operations described herein. Software code can be implemented in a software application written in a suitable programming language. The software code is stored in the memory 160 and can be executed by the control unit 180. [

2 shows a communication system capable of operating a terminal according to the present invention.

The communication system may use different air interfaces and / or physical layers. For example, wireless interfaces that can be used by communication systems include, but are not limited to, Frequency Division Multiple Access ('FDMA'), Time Division Multiple Access ('TDMA'), Code Division Multiple Access (CDMA), Universal Mobile Telecommunications Systems (UMTS) (especially Long Term Evolution (LTE)), Global System for Mobile Communications (GSM) . Hereinafter, for convenience of description, the description will be limited to CDMA. However, the present invention is applicable to all communication systems including CDMA wireless communication systems.

2, the CDMA wireless communication system includes a plurality of terminals 100, a plurality of base stations (BSs) 270, and base station controllers (BSCs) 275 , And a mobile switching center ('MSC') 280. The MSC 280 is configured to be connected to a public switched telephone network (PSTN) 290 and is also configured to be connected to BSCs 275. BSCs 275 may be coupled in pairs with BS 270 through a backhaul line. The backhaul line may be provided according to at least one of E1 / T1, ATM, IP, PPP, Frame Relay, HDSL, ADSL, or xDSL. Thus, a plurality of BSCs 275 may be included in the system shown in FIG.

Each BS 270 may comprise at least one sector, and each sector may comprise an omnidirectional antenna or an antenna pointing to a particular direction of radial from BS 270. [ In addition, each sector may include two or more antennas of various types. Each BS 270 may be configured to support a plurality of frequency assignments, each of which has a specific spectrum (eg, 1.25 MHz, 5 MHz, etc.).

The intersection of sectors and frequency assignments may be called a CDMA channel. BS 270 may be referred to as a Base Station Transceiver Subsystem (BTSs). In this case, the word "base station" may be referred to as a combination of one BSC 275 and at least one BS 270. [ The base station may also indicate “cell site”. Alternatively, each of the plurality of sectors for a particular BS 270 may be referred to as a plurality of cell sites.

2, a broadcasting transmitter (BT) 295 transmits a broadcasting signal to the terminals 100 operating in the system. The broadcast receiving module 111 shown in FIG. 1 is provided in the terminal 100 to receive a broadcast signal transmitted by the BT 295.

In addition, FIG. 2 illustrates several Global Positioning System ('GPS') satellites 300. The satellites 300 help to locate at least one of the plurality of terminals 100. Although two satellites are shown in FIG. 2, useful location information may be obtained by two or more satellites. The location information module 115 shown in FIG. 1 cooperates with satellites 300 to obtain desired location information. Here, the location can be tracked using not only the GPS tracking technology but also all the technologies that can track the location. Also, at least one of the GPS satellites 300 may optionally or additionally be responsible for satellite DMB transmission.

Among the typical operations of a wireless communication system, the BS 270 receives a reverse link signal from the various terminals 100. At this time, the terminals 100 are connecting a call, transmitting or receiving a message, or performing another communication operation. Each of the reverse link signals received by the particular base station 270 is processed by the particular base station 270. The data resulting from the processing is transmitted to the connected BSC 275. The BSC 275 provides call resource allocation and mobility management functions, including the organization of soft handoffs between the base stations 270. The BSC 275 also transmits the received data to the MSC 280 and the MSC 280 provides additional transmission services for connection with the PSTN 290. [ Similarly, the PSTN 290 connects to the MSC 280, the MSC 280 connects to the BSCs 275, and the BSCs 275 communicate with the BSs 270 ).

In general, the RCS-e (enhanced) service has a presence information function among instant messaging (IM), file transfer, contents sharing, and presence information in the existing RCS service. Means excluded services. That is, the presence server that manages and notifies the status information of each terminal is excluded from the RCS-e (enhanced) service as shown in FIG.

Therefore, since the RCS service manages and notifies the status information of each terminal in a separate presence server, each terminal can know the capability of the other terminal, but the RCS-e service does not use the presence server itself. Each terminal acquires the capability of the other party by sending an OPTIONS message when registering the other party as my buddy after booting. That is, when the RCS service is initiated, all terminals sequentially transmit SIP OPTIONS messages to all contacts in the phonebook in order to know the capabilities, so that the capability discovery, that is, service capability Exchange information.

The capability discovery includes a series of processes that allow a counterpart user to know the type and status of currently available communication services of a user (sending user) that sends the SIP OPTIONS message.

4 illustrates an example of performing capability discovery by transmitting a SIP OPTIONS message in a general RCS-e service.

As shown in FIG. 4, when the terminal is booted and the RCS service is started, the control unit 180 (not shown) of the transmitting terminal sequentially transmits SIP OPTIONS messages to all contacts (receiving terminal) to provide service performance. Information is exchanged (S1, S2). The contact includes a contact stored in a phonebook or an external device (e.g., SIM, USIM, and others).

For example, if there are 3000 users stored in the phone book and other storage devices, the controller 180 sequentially repeats SIP OPTIONS messages from the first user to the receiving terminals (terminals # 1 to # 3000). Send it.

The control unit of the receiving terminal (eg, terminal # 1) of the user who receives the SIP OPTIONS message responds to the SIP OPTIONS message when the current user is registered in the RCS service (RCS user) and is online (RCS service On). As a message, a SIP 200 OK (confirmation message) is transmitted to the transmitting terminal.

On the other hand, if the user is an RCS user but is offline (RCS service off) and cannot find the user within the predetermined time, the receiving terminal (eg, terminal # 2) sends 408 REQ TIMEOUT as a response message to the SIP OPTIONS message. If it is an RCS user but the location is not registered because it is not registered temporarily, ERROR 480 NOT REGISTERED is sent as a response message. In addition, when the user is not an RCS user, the receiving terminal (e.g., terminal # 3) transmits an ERROR 404 NOT FOUND message.

As such, after exchanging SIP OPTIONS message and exchanging service capability information, that is, status information, with a plurality of receiving terminals (terminals # 1 to # 3000), the user of the transmitting terminal receives an RCS service with the users of the receiving terminal. Performs various operations (chat, file delivery, and content sharing) provided by.

However, when the SIP OPTIONS message is sequentially transmitted to all the receiving terminals to the plurality of receiving terminals in order to know the status of the counterpart users in the RCS service, not only the performance of the transmitting terminal is reduced but also the network load is increased. .

Accordingly, the present invention selectively transmits SIP OPTIONS messages to all receiving terminals at boot time according to (1) Capability Discovery priority and (2) Service Capability priority.

First, the capability discovery priority is to determine an order in which to perform capability discovery among a plurality of contacts, and the present invention divides the contacts of the plurality of receiving terminals into predetermined groups according to the priorities.

The capability discovery priority is divided as follows.

1.Favorite contacts

2. Recent / Most Used Contacts

3. By service (e.g. call, chat, file transfer, video / image sharing, etc.)

4. By User (Last Name, Family Name, Family Name, Other)

5. Remaining contacts (group and size specified separately)

6. A contact that has never been contacted for a certain period of time (eg 1 month, 3 months, 6 months)

The set priority is stored and managed in the memory 160, and the controller 180 can display a separate menu (RCS service menu) for setting the priority according to a user's selection on the display unit 151.

Therefore, when the capability discovery priority is set as described above for a plurality of contacts in the RCS service menu, the capability discovery is first performed on the favorite contacts, followed by a capper for recently used / most frequently used contacts. The capability discovery is performed, and the capability discovery is performed on the contacts which have not been contacted at least for a specific period after the capability discovery is performed on the service, the user, and the remaining contacts. The setting can be changed according to the user's selection.

In this case, when the SIP OPTIONS message is transmitted to a specific contact group (receiver terminal group) according to the set capability discovery priority, the present invention separately sets a processing time (Time) and a group size for each group. The processing time and the size of the group may be set in the RCS service menu.

That is, the high priority group performs capability discovery for a longer time than the low priority group. For example, the transmission time of the SIP OPTIONS message of the high priority contact group is set longer than the low priority contact group. In addition, the size of each group is specified so that the group having higher priority completes capacity discovery faster than the group having lower priority.

Next, the service capability priority is set (or selected) when performing service capability discovery between mobile terminals through a SIP OPTIONS message. The service capability priority is automatically changed in order to perform a chat or SMS when the user directly changes (sets) or the environment, for example, a call cannot be made. The changed capability priority is transmitted to the counterpart terminal (receiving terminal) through the SIP OPTIONS message.

5 illustrates an example of performing capability discovery by transmitting a SIP OPTIONS message according to priority in an RCS-e service according to the present invention.

When the mobile terminal is booted, the controller 180 searches for the contacts of the receiving terminal stored in the phonebook, and then performs capability discovery on a contact group having a higher priority (or receiving terminal group) based on the priority set by the user. do.

That is, as shown in FIG. 5, a terminal group (terminal group # 1 to terminal group #N) and a processing time (Time # 1 to Time # N) of a predetermined size can be set by the user in the RCS menu. have. Thereafter, when the mobile terminal is booted, the controller 180 starts Timer # 1 and sends a SIP OPTIONS message to each of the terminals included in the first terminal group (terminal group # 1) having the highest priority during the first time (Time # 1). Are sequentially transmitted to exchange service capability information. The first terminal group (terminal group # 1) includes terminals corresponding to important contacts.

When the SIP OPTIONS message is transmitted, the controller 180 transmits priorities of services (Call, video sharing, SMS, Chat, video call, etc.) changed according to user setting or surrounding environment.

When the capability discovery for the first terminal group (terminal group # 1) is completed (Timer # 1 expires), the controller 180 activates Timer # 2 to take priority over the next time during the second time (Time # 2). Service capability information is exchanged by sequentially sending SIP OPTIONS messages to each of the terminals included in the second higher terminal group (terminal group # 2).

At this time, each terminal in the terminal group receiving the SIP OPTIONS message is one of SIP 200 OK (confirmation message), 408 REQ TIMEOUT, ERROR 480 NOT REGISTERED or ERROR 404 NOT FOUND message according to the user's status. To send.

In this way, the controller 180 sequentially transmits the SIP OPTIONS message to the terminals included in the last terminal group (terminal group #N), thereby all the terminal groups (terminal group # 1 to terminal group # 1) and service capability. Exchange information.

In particular, FIG. 6A illustrates a method for allowing a user to select a priority of an RCS service when performing service capability discovery between terminals through a SIP OPTIONS message.

As shown in FIG. 6A, a user can change the priority of his service capability in a menu before sending a SIP OPTIONS message. For example, there are currently available Call-Video (or Video) (VT) -Video Share (VS) -Email-Chat-File Transfer (FT). Change the priority to Chat-Voice Call-Video Call (VT)-Email-Video Sharing (VS)-File Transfer (FT) to change the chat to the highest priority. You can tell them you want to chat now. The changed priority is displayed at the top of the contact list, ie, the phonebook.

Once the user has changed the priority 50 of the service capability, the controller 180 transmits the changed priority 50 to the counterpart terminal of the contact of the phonebook through the SIP OPTIONS message.

When the IP OPTIONS message is received, the controller 180 of the opposite terminal searches the priority of the service capability included in the IP OPTIONS message and changes the service priority of the user Amy Milne. Therefore, the user of the other terminal can recognize that Amy Milne wants to talk first through chat and then wants to make a video call, and can perform a chat or video call.

6B illustrates how the priority of the RCS service is automatically changed according to the surrounding environment.

In general, even if the user sets the priority of the RCS service as shown in FIG. 6A, there may be a case where a service having a specific high priority may not be performed due to the surrounding environment (location, communication state, time, and the like). Therefore, when a case in which a specific service is not performed according to the surrounding environment occurs, the present invention detects this and automatically changes the priority 51 of the service capability according to the surrounding environment.

The priority 51 of the automatically changed service capability is transmitted to the counterpart terminal of the contact of the phone book through the SIP OPTIONS message.

Referring to FIG. 6B, the user Amy Milne may initially set the priority of the service capability, for example, voice call, video call, video sharing, email, SMS, and chat. Chat)-File Transfer (FT).

However, when the environment (meeting, concert and other) of the user Amy Milne does not currently perform a voice call, the controller 180 controls the current user through setting or location detection of the user Amy Milne. Amy Milne recognizes that she is unable to perform a call or video call, and automatically changes the priority of the service capability 51 to perform a chat and text message (SMS). do.

That is, the controller 180 changes the priority of the service capability in the order of Chat, Email, Video Call, Voice Call, Video Sharing, File Transfer, and File Transfer. In addition, the priority 51 of the changed capability is displayed on the screen and transmitted to the counterpart terminal of the contact of the phone book through the SIP OPTIONS message.

Accordingly, the controller 180 of the counterpart terminal searches the priority of the service capability included in the IP OPTIONS message and displays the service priority of the user Amy Milne. Accordingly, the user of the other terminal can recognize that Amy Milne currently wants to talk through chat and then can be contacted via text message, and can perform the corresponding service.

As such, the present invention excludes the use of the presence server and performs service capability discovery through the SIP OPTIONS message between mobile terminals, so that the SIP OPTIONS message is classified into groups having different priorities. As a result, performance degradation of the calling terminal does not occur, and there is almost no load on the network.

In addition, the present invention transmits the service capability priority selected by the user (modified) together when performing the service capability discovery through the SIP OPTIONS message, so that the counterpart user can more easily type the currently available communication service of the calling user. And the status will be known.

Further, according to an embodiment of the present invention, the above-described method can be implemented as a code that can be read by a processor on a medium on which the program is recorded. Examples of the medium that can be read by the processor include ROM, RAM, CD-ROM, magnetic tape, floppy disk, optical data storage, etc., and may be implemented in the form of a carrier wave (e.g., transmission over the Internet) .

The above-described mobile terminal is not limited to the configuration and method of the above-described embodiments, but the embodiments are configured by selectively combining all or some of the embodiments so that various modifications can be made. May be

Therefore, the embodiments described in the present specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention, and not all of the technical ideas of the present invention are described. Therefore, It is to be understood that equivalents and modifications are possible.

180: control unit 200: power amplifier
202: transmission power detector 204: antenna matching controller
206: antenna matching unit 150: output unit
151: display unit 160: memory
180:

Claims (17)

Classifying the contacts into a plurality of groups according to their priorities; And
And performing capability discovery of a service by transmitting a SIP OPTIONS message to the classified plurality of contact groups. The method of claim 1, wherein the contact includes a contact stored in a phone book or an external device, and the service is a Rich Communication Suite-Enhanced (RCS-e) service. The method of claim 1, wherein the priority is
A method of service capability discovery of a mobile terminal, including importance, chronological (chronological), least frequent (frequency), per-service and per-user settings. The method of claim 1, wherein the plurality of groups
The service capability discovery method of a mobile terminal, characterized in that the size and processing time are set differently according to the priority. 5. The method of claim 4, wherein the group of high priority contacts
The service capability discovery method of a mobile terminal, characterized in that the transmission time of the SIP OPTIONS message is set longer than a low priority group of contacts. 5. The method of claim 4, wherein the size of the high priority contact group is
A method of service capability discovery of a mobile terminal in which capability discovery is set to complete faster than a group of low priority contacts. The method of claim 1, further comprising: informing the contacts of each group of priorities of the changed service capabilities through the SIP OPTIONS message. 8. The method of claim 7, wherein the priority of the service capability is
A service capability discovery method of a mobile terminal including a priority of a plurality of services selected by a user in a menu or a priority of a service automatically changed by a control unit according to a surrounding environment. The method of claim 8, wherein the plurality of services
A service capability discovery method of a mobile terminal, which is currently available, including voice call, video call, video sharing, email, chat, and file transfer. A memory for storing a plurality of contact groups classified according to priorities; And
And a control unit configured to perform capability discovery of a service by transmitting a SIP OPTIONS message to a plurality of classified contact groups when a Rich Communication Suite-Enhanced (RCS-e) service is started. The mobile terminal of claim 10, wherein the contact includes a contact stored in a phone book or an external device, and the priority includes a priority, a recent (chronological), least frequent (frequency), service-specific, and user-specific settings. The method of claim 10, wherein the plurality of groups
A mobile terminal, characterized in that the size and processing time are set differently according to the priority. 13. The method of claim 12, wherein the group of high priority contacts
The transmission time of the SIP OPTIONS message is set longer than the contact group of the lower priority. 13. The method of claim 12, wherein the size of the high priority contact group is
A mobile terminal that is set up so that capability discovery completes faster than a group of low priority contacts. The method of claim 10, wherein the control unit
Mobile terminal characterized in that the priority of the changed service capability to the contacts of each group through the SIP OPTIONS message. 16. The method of claim 15, wherein the priority of the service capability is
A mobile terminal including a priority of a plurality of services changed by a user in a menu or a priority of a service automatically changed by a control unit according to a surrounding environment. The method of claim 8, wherein the plurality of services
Available services, mobile terminals including voice calls, video calls, video sharing, email, chat and file transfer.

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