KR20150116044A - Method and terminal for direct communication between terminals, and method and apparatus of group service based on device to device communication - Google Patents

Abstract

According to an embodiment of the present invention, provided is a method for direct communications between terminals of a first terminal. The first terminal receives a terminal list from a server. The first terminal sets a direct link with at least one second terminal included in the terminal list. The first terminal transfers data to the second terminal through the direct link. Herein, the terminal list is produced as the second terminal, which is to receive a service of the first terminal, sends a terminal registration request to the server.

Description

TECHNICAL FIELD [0001] The present invention relates to a direct communication method between terminals, a terminal supporting the same, a group service method based on direct communication between terminals, and a terminal supporting the same. [0002]

The present invention relates to a direct communication method between terminals and a terminal supporting the same. More particularly, the present invention relates to a direct communication method between terminals based on a cellular network, a terminal supporting the same, a group service method based on direct communication between terminals, and a terminal supporting the same.

In a direct communication between terminals, D2D (Device to Device) discovery or terminal search process detects the presence of each other by geographically close terminals through direct transmission / reception between terminals, It is an acquisition process. A terminal participating in the D2D discovery process can broadcast information including a terminal ID or a service ID (ID of a service provided by the terminal) through a physical channel.

In the direct communication between the terminals, the state of the terminal includes a discovery state and a discoverable state. A terminal in a discovery state (hereinafter referred to as a 'discovery terminal') periodically refers to a terminal performing a search for a discovery physical channel of another terminal. A terminal that is in a discoverable state (hereinafter referred to as a 'discoverable terminal') refers to a terminal that periodically broadcasts its own terminal ID or service ID to a discovery physical channel.

On the other hand, the Restricted Discovery service is a service in which a discovery terminal and a discoverable terminal discover each other based on mutual agreement, and perform a discovery process among specific users. Here, the specific user is a user who agreed to perform a discovery process with each other (e.g., a user who is a registered friend relationship). A typical example of the limited discovery service is Social Networking Service (SNS).

On the other hand, an open discovery service discovery terminal finds a discoverable terminal without mutual agreement among terminals. To this end, the discoverable terminal joins the open discovery service through the D2D server, receives the discovery ID or information for the open discovery through the related procedure from the D2D server, and transmits (or broadcasts) the issued discovery ID or information, do. The representative service of Open Discovery service is advertisement service.

There is a need for a method for efficiently providing open discovery service in direct communication between terminals.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a method and apparatus for providing a service to a group formed by forming discovery terminals that receive information on a discoverable terminal through a discovery physical channel into separate groups .

According to the embodiment of the present invention, a method for direct communication between terminals of a first terminal is provided. The direct communication method includes: receiving a terminal list from a server; Establishing a direct link with at least one second terminal included in the terminal list; And transmitting data to the second terminal via the direct link. Here, the terminal list is generated by the second terminal requesting the service of the first terminal to make a terminal registration request to the server.

According to the embodiment of the present invention, a discovery terminal (e.g., a smart phone or the like) in direct communication between terminals can receive broadcast information of a plurality of discoverslable terminals by simply turning on the discovery function when setting the environment.

Also, according to the embodiment of the present invention, when the discoverable terminal broadcasts its own discovery information through the physical channel through the open discovery service, the discovery terminal provides the group service to the discovery terminals at the close distance . Thus, in the case of a specific enterprise field (e.g., a school, a stadium, a department store, etc.), the discoverable terminal can efficiently perform customer management for nearby terminals by broadcasting its own discovery information.

Also, according to the embodiment of the present invention, since information (e.g., contents) is transmitted according to a registration request of a discovery terminal, rather than information transfer for an unspecified number, an approved connection can be established.

In addition, according to the embodiment of the present invention, by setting a specific terminal as a discoverable terminal in case of a specific accident or an incident scene, it is possible to efficiently broadcast information on an accident or an event.

1 is a diagram illustrating a wireless communication system according to an embodiment of the present invention.
2 is a flowchart illustrating a procedure for registering a discovery terminal according to an embodiment of the present invention.
3 is a flowchart illustrating a procedure for providing a group service by a discoverable terminal according to an embodiment of the present invention.
4 is a diagram illustrating a configuration of a discoverable terminal according to an embodiment of the present invention.
5 is a diagram illustrating a configuration of a discovery terminal according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In order to clearly illustrate the present invention, parts not related to the description are omitted, and similar parts are denoted by like reference characters throughout the specification.

Throughout the specification, a terminal is referred to as a mobile station (MS), a mobile terminal (MT), an advanced mobile station (AMS), a high reliability mobile station ), A subscriber station (SS), a portable subscriber station (PSS), an access terminal (AT), a user equipment (UE) MT, AMS, HR-MS, SS, PSS, AT, UE, and the like.

Also, the mobile base station includes a base station (BS), an advanced base station (ABS), a high reliability base station (HR-BS), a node B, An access point (AP), a radio access station (RAS), a base transceiver station (BTS), a mobile multihop relay (MMR) -BS, A BS, an ABS, a Node B, an eNodeB, and a Node B may be referred to as a Relay Station (RS) serving as a base station, a High Reliability Relay Station (HR- AP, RAS, BTS, MMR-BS, RS, HR-RS, and the like.

1 is a diagram illustrating a wireless communication system 1000 according to an embodiment of the present invention.

The wireless communication system 1000 may include a discoabled terminal 110, 120 and 130, a discovery terminal 200, a mobile station 300, and a D2D server 500.

The discoverable terminals 110, 120, and 130 broadcast their own discovery information. 1 illustrates a case where each of the discoverable terminals 110, 120 and 130 broadcasts its own discovery information in each of the enterprise environments (eg, the school 600, the stadium 700, and the department store 800) . On the other hand, there may be at least one discrete terminal 110, 120, 130 corresponding to each enterprise environment (e.g., 600, 700, 800). Specifically, each of the discoverable terminals 110, 120, and 130 performs an open discovery registration procedure through communication with the D2D server 500 and receives a discovery ID or information for the open discovery service. Here, each of the discoverable terminals 110, 120, and 130 may communicate with the D2D server 500 through the mobile BS 300 and the mobile communication network 400. Each of the discoverable terminals 110, 120, and 130 broadcasts discovery information in each of the enterprise environments 600, 700, and 800.

The discovery terminal 200 (for example, a mobile communication terminal, a mobile terminal) located at a distance from the discoverable terminal 110, 120, or 130 is connected to each of the discoverable terminals 110, 120, And the like. In FIG. 1, for convenience of explanation, the case where one discovery terminal 200 is provided is exemplified. However, a plurality of discovery terminals 200 may be provided.

2 is a flowchart illustrating a procedure for registering a discovery terminal 200 according to an embodiment of the present invention.

The discovery terminal 200 turns on the discovery function in a manner similar to turning on the Wi-Fi function in the terminal environment setting (S110).

When the discovery function is turned on, the discovery terminal 200 receives the discovery physical channel from that instant (S120). The discovery terminal 2000 receives at least one open discovery broadcast information broadcasted at an adjacent distance through the received discovery physical channel. Even if the location of the discovery terminal 200 is changed, the discovery function is set to the turn-on state If the discovery terminal 200 receives the new discovery broadcasting information, the discovery terminal 200 can display the information on the screen.

If there is discovery broadcast information broadcasted by a discoverable terminal (e.g., 110) that desires to automatically register among the received discovery broadcast information (S130), the discovery terminal 200 transmits its own unique identification number (e.g., IMSI By transmitting a registration request message including the information of the mobile terminal (International Mobile Subscriber Identity), MSISDN (Mobile Subscriber Integrated Services Digital Network-Number), etc.) and information of the discoverable terminal 110 to the D2D server 500, (S140). The D2D server 500, which is requested to register the terminal from the discovery terminal 2000, registers the discovery terminal 200 in the terminal list for the corresponding discoverable terminal 110.

Meanwhile, the discovery terminal 200 determines whether there is discovery broadcast information broadcasted by a discoverable terminal (for example, 200) that wants to register among the discovery broadcast information displayed on the screen (S150). That is, the discovery terminal 200 determines whether the discovery terminal 200 itself has a discoverable terminal (for example, 200) that provides a desired service. If so, the discovery terminal 200 transmits a registration request message including its own unique identification number (e.g., IMSI, MSISDN, etc.) and the information of the discoverable terminal 200 to the D2D server 500, A registration procedure is requested (S160).

On the other hand, if the receiving sensitivity of the receiving discovery physical channel becomes weak (S170), the discovery terminal 200 automatically requests the D2D server 500 to cancel the registration (S180).

FIG. 3 is a flowchart illustrating a procedure in which a discoverable terminal (e.g., 110) provides group services according to an embodiment of the present invention. Specifically, the group service providing procedure of FIG. 3 includes a process in which the discoverable terminal 110 establishes group connection with at least one discovery terminal 200 and provides a group service.

When there is a content (e.g., publicity information, publicity information, etc.) to be transmitted to at least one discovery terminal 200 close to itself, the discoverable terminal 110 broadcasting the discovery information through the discovery physical channel (S210) and requests a terminal list including at least one Discovery terminal 200 registered through the registration procedure of FIG. 2 (S220). Herein, the terminal list (hereinafter, referred to as 'first terminal list') for the discoverable terminal 110 includes at least one discovery terminal 200 desiring to receive the service of the discoverable terminal 110.

The D2D server 500 receiving the terminal list transmission request transmits the first terminal list to the discoverable terminal 110.

The discoverable terminal 110 receives the first terminal list from the D2D server 500 at step S230 and communicates with the at least one discovery terminal 200 included in the first terminal list through a communication connection Direct link) (S240). Here, the communication connection setting type is 1: N connection type.

The discoverable terminal 110 transmits the content to the at least one discovery terminal 200 through the set direct link (S250). In detail, various contents can be transmitted according to the nature of the service that the discoverable terminal 110 desires to provide. For example, the content may be a short message, a multimedia message, a video file, a survey, and a promotional event content.

Upon completion of the content transmission, the discoverable terminal 110 releases the communication connection with the at least one discovery terminal 200 set in operation S240 (S260). The discoverable terminal 110 ends the group service procedure.

4 is a diagram illustrating the configuration of a discoverable terminal (e.g., 110) according to an embodiment of the present invention.

The discoverable terminal 110 may include a memory 111, a processor 112, and a radio frequency (RF) converter 113.

The processor 112 may be configured to implement the functions, procedures, and methods described in FIG. 1 and FIG.

The memory 111 is connected to the processor 112 and stores various information related to the operation of the processor 112. [

The RF converter 113 is connected to the processor 112 and transmits or receives radio signals. The discoverable terminal 110 may have a single antenna or multiple antennas.

5 is a diagram showing a configuration of a discovery terminal 200 according to an embodiment of the present invention.

The discovery terminal 200 may include a memory 210, a processor 220, and an RF converter 230.

The processor 220 may be configured to implement the functions, procedures, and methods described in FIG. 1 and FIG.

The memory 210 is coupled to the processor 220 and stores various information related to the operation of the processor 220.

The RF converter 230 is connected to the processor 220 and transmits or receives a radio signal. The discovery terminal 200 may have a single antenna or multiple antennas.

The present invention can be applied to a case where a terminal (for example, 110) broadcasts discovery information for an open discovery service in an enterprise environment (e.g., a school 600) And may form a group including at least one neighboring terminal 200 to receive information. The terminal 110 may provide a consistent service (e.g., text, moving picture, publicity information, etc.) to the terminal 200 included in the group. Accordingly, the present invention can be applied as a part of customer service according to a service providing method. For example, the discountable terminal (e.g., 130) can provide a publicity event service for the terminals 200 registered at the department store 800 at the discovery terminal. In addition, the present invention can be applied to a disaster, a disaster, and an accident site to register a specific terminal as a discoverable terminal, and deliver disaster, disaster, or accident information to nearby terminals in real time.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, It belongs to the scope of right.

Claims (1)

A direct communication method between terminals of a first terminal,
Receiving a terminal list from a server;
Establishing a direct link with at least one second terminal included in the terminal list; And
And transmitting data to the second terminal via the direct link,
The terminal list is generated by the second terminal desiring to receive the service of the first terminal by making a terminal registration request to the server
Direct communication method.

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