KR20160114805A - Communication method of mobile base station, and communication method of terminal - Google Patents

Communication method of mobile base station, and communication method of terminal Download PDF

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Publication number
KR20160114805A
KR20160114805A KR1020150041017A KR20150041017A KR20160114805A KR 20160114805 A KR20160114805 A KR 20160114805A KR 1020150041017 A KR1020150041017 A KR 1020150041017A KR 20150041017 A KR20150041017 A KR 20150041017A KR 20160114805 A KR20160114805 A KR 20160114805A
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South Korea
Prior art keywords
base station
terminal
mobile base
mobile
information
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KR1020150041017A
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Korean (ko)
Inventor
이정환
김은아
성기순
이창희
박애순
오성민
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한국전자통신연구원
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Priority to KR1020150041017A priority Critical patent/KR20160114805A/en
Publication of KR20160114805A publication Critical patent/KR20160114805A/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/18—Self-organising networks, e.g. ad-hoc networks or sensor networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/24—Cell structures
    • H04W16/26—Cell enhancers or enhancement, e.g. for tunnels, building shadow
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/08—Access point devices
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W92/00—Interfaces specially adapted for wireless communication networks
    • H04W92/16—Interfaces between hierarchically similar devices
    • H04W92/20—Interfaces between hierarchically similar devices between access points

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

A first mobile base station sets up connection with a second mobile base station in order to directly perform communication with the second mobile base station without passing an infrastructure based first network. The first mobile base station transmits information of a first terminal, which is connected to the first mobile base station, to the second mobile base station. The first mobile base station receives information of a second terminal, which is connected to the second mobile base station, from the second mobile base station. The first mobile base station stores information of the second terminal.

Description

Technical Field [0001] The present invention relates to a communication method of a mobile base station, and a communication method of a mobile base station,

The present invention relates to a method for a mobile base station to communicate and a method for a terminal to communicate via a mobile base station.

A Wi-fi access point constitutes one local network. Specifically, as illustrated in FIG. 1, each of the Wi-Fi access points WAP1, WAP2 and WAP3 constitutes one local network LN1, LN2 and LN3. The terminals 10a to 10i included in the local networks LN1 to LN3 are connected to an infrastructure-based network through Wi-Fi access points WAP1 to WAP3. Infrastructure based networks may include the Internet. Here, one local network LN1 to LN3 is a wireless LAN (Wireless Local Area Network) in which a plurality of terminals 10a to 10i are coupled under the control of one Wi-Fi access point WAP1 to WAP3, Means a structural unit.

On the other hand, in a conventional WLAN, a terminal (e.g., 10b) included in one local network (e.g., LN1) communicates with a terminal (e.g., 10e) included in an adjacent local network , It must be through an infrastructure-based network.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a method and system for a multi-hop local network through a multi-hop connection between mobile base stations having direct connection communication functions (e.g., Wi-Fi peer to peer communication, D2D The method comprising the steps of:

It is another object of the present invention to provide a method of performing data communication between terminals belonging to different mobile base stations without using an infrastructure based network.

It is another object of the present invention to provide a method of supporting data communication between terminals belonging to a multi-hop local network.

According to an embodiment of the present invention, a method is provided for a first mobile base station to communicate. Establishing a connection with the second mobile base station to directly communicate with a second mobile base station without passing through a first network based on an infrastructure; Transmitting information of a first terminal connected to the first mobile base station to the second mobile base station; Receiving information of a second terminal connected to the second mobile base station from the second mobile base station; And storing information of the second terminal.

The first mobile base station and the second mobile base station may be mobile small cell base stations.

The first network may include a fixed macro cell base station.

The information of the second terminal may include a unique identifier of the second terminal.

The step of storing the information of the second terminal may include storing the unique identifier of the second terminal together with the address of the second mobile base station in the terminal information table storing the information of the first terminal .

The communication method may further include storing information for routing to the second mobile base station, the address including the address of the second mobile base station, in a routing table.

Wherein the communication method comprises the steps of: when a first message requesting information of a third terminal is received from the first terminal, a unique identifier of the third terminal and an address of a third mobile base station to which the third terminal is connected, 1 to the terminal.

The first message may include a unique identifier of the third terminal.

The communication method includes: receiving first data for the third terminal from the first terminal; Transmitting, when the third terminal is the second terminal, the first data to the second mobile base station being the third mobile base station; And transmitting the first data to the third mobile base station via the second mobile base station when the third terminal is not the second mobile station.

The communication method may further include receiving, when the third terminal is not the second terminal, a unique identifier of the third terminal from the second mobile base station before the step of transmitting to the first terminal, Storing in the terminal information table together with the address of the base station; And storing, in the routing table, information for routing to the third mobile base station, the address including the address of the third mobile base station, if the third mobile base station is not the second mobile base station .

If the third terminal is not the second terminal, the first data comprises a hop between the first mobile base station and the second mobile base station and a hop between the second mobile base station and the fourth mobile base station, To the third mobile base station via at least the multi-hop that it contains.

The destination address of the first data may be changed to the address of the third terminal by the third mobile base station.

The communication method may further include the step of sharing information for interference control with the second mobile base station.

Wherein the step of sharing information for interference control comprises: sharing information of a channel used by the first terminal or the second terminal with the second mobile base station; And sharing the channel information for connection between the first mobile base station and the second mobile base station with the second mobile base station.

Wherein the establishing of the connection with the second mobile base station comprises establishing a connection with the first mobile base station and the second mobile base station using one of a connection method of Wi-Fi Peer to Peer communication and a connection method of D2D (Device to Device) And establishing a connection between the mobile base stations.

The step of transmitting the information of the first terminal may include periodically transmitting the information of the first terminal to the second mobile base station.

Wherein the step of transmitting the information of the first terminal comprises the step of transmitting information of the first terminal to the second mobile base station when the connection state between the first mobile base station and the third mobile base station or the connection state of the first terminal is changed, As shown in FIG.

According to another embodiment of the present invention, there is also provided a method for a first terminal to communicate. The communication method comprising the steps of: transmitting, to a second mobile base station communicating directly with a first mobile base station without passing through a first network based on an infrastructure, a unique identifier of the second mobile station to request information of the second mobile station Transmitting a first message; Receiving, from the second mobile base station, a unique identifier of the second terminal and an address of a third mobile base station to which the second terminal is connected; Generating first data based on the unique identifier of the second terminal and the address of the third mobile base station, wherein the address of the third mobile base station is a destination address; And transmitting the first data to the second mobile base station.

In the case where the third mobile base station is the first mobile base station, the first data may be transmitted to the second mobile station through direct communication between the first mobile base station and the second mobile base station.

The destination address of the first data may be changed to the address of the second terminal by the first mobile base station.

The unique identifier of the second terminal may include at least one of a Medium Access Control (MAC) address of the second terminal, an application ID of the second terminal, and a device ID of the second terminal.

The communication method may further include searching information of the second terminal in the neighboring terminal information table before transmitting the first message.

The step of transmitting the first message may include transmitting the first message to the second mobile base station when information of the second mobile station is not found in the neighboring mobile station information table.

The neighboring terminal information table may include a unique identifier of a neighboring terminal neighboring the first terminal and an address of a mobile base station to which the neighboring terminal is connected.

Further, according to another embodiment of the present invention, a mobile base station is provided. The mobile base station comprising: a memory; And a processor coupled to the memory and controlling the first mobile base station to communicate directly with the first mobile base station via an infrastructure based network.

The processor receives and stores information on a terminal connected to the first mobile base station from the first mobile base station and stores the unique identifier of the second terminal when the information about the second terminal is requested from the first terminal. And transmit the address of the second mobile base station to which the second mobile station is connected to the first mobile station.

According to an embodiment of the present invention, one multi-hop local network can be configured using direct communication between adjacent mobile base stations.

In addition, according to an embodiment of the present invention, when a connection to an external network is disconnected due to a defect of a macro cell base station or the like, or when a local network is temporarily configured for a specific purpose, It is possible to perform data communication between the terminals through the hop local network.

In addition, according to the embodiment of the present invention, data offloading effect on an existing infrastructure based network can be obtained.

Further, according to the embodiment of the present invention, when it is necessary to configure a dedicated local network such as an individual or a company, or when a network configuration for a specific service purpose is temporarily required, a multi-hop local The network can be configured.

1 is a diagram illustrating a network model based on a WLAN infrastructure.
2 is a diagram illustrating a local network model based on direct connection communication between mobile base stations according to an embodiment of the present invention.
3 is a flowchart illustrating a process of configuring one multi-hop local network and a process of performing communication between the terminals.
4 is a diagram showing a management table of a mobile small cell base station through terminal information exchange between mobile small cell base stations.
5 is a diagram showing a management table of a terminal.
6 is a diagram showing a configuration of a mobile small cell base station.
7 is a diagram showing a configuration of a terminal.

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 terminal (MT), a mobile station (MS), 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) MS, AMS, HR-MS, SS, PSS, AT, UE, and the like.

The macro cell base station includes a base station (BS), an advanced base station (ABS), a high reliability base station (HR-BS), a node B, An evolved node B, an access point (AP), a radio access station (RAS), a base transceiver station (BTS), a mobile multihop relay (MMR) A relay station (RS) serving as a base station, a high reliability relay station (HR-RS) serving as a base station, etc., , Node B, eNodeB, AP, RAS, BTS, MMR-BS, RS, HR-RS, and the like.

In addition, the mobile small cell base station includes a base station (BS), an advanced base station (ABS), a high reliability base station (HR-BS), a node B, an eNodeB, An access point (AP), a radio access station (RAS), a base transceiver station (BTS), an MMR-BS, a repeater (RS) serving as a base station, a high reliability repeater (HR-RS) serving as a base station, BS, ABS, HR-BS, Node B, eNodeB, AP, RAS, BTS, MMR-BS, RS, HR-RS, and the like.

2 is a diagram illustrating a local network (LN4) model based on direct connection communications between mobile base stations MSB1-MSB3, in accordance with an embodiment of the present invention. Here, the mobile base stations MSB1 to MSB3 may be mobile devices (e.g., vehicles, trains, etc.) that have mobility and perform functions of the base stations. Alternatively, the mobile base stations MSB1 to MSB3 may be terminals capable of performing the functions of the base station. The mobile base stations MSB1 to MSB3 may be mobile small-cell base stations. Hereinafter, mobile base stations MSB1 to MSB3 are mobile small-cell base stations. Hereinafter, for convenience of description, a case where one multi-hop local network LN4 includes three mobile cell base stations MSB1 to MSB3 will be described as an example.

One multi-hop local network (LN4) can be configured using a direct connection communication method between mobile small cell base stations (MSB1 to MSB3). The terminals 20a to 20g connected to the mobile small cell basestations MSB1 to MSB3 are connected to the mobile station MSB1 to MSB3 via the multi-hop local network LN4 configured based on the direct connection communication function between the mobile small cell base stations MSB1 to MSB3, (20a-20g). 2, the terminals 20a and 20b are connected to the mobile small cell base station MSB1, the terminals 20c and 20d are connected to the mobile small cell base station MSB2, And connected to the small cell base station MSB3.

The direct connection communication method between the mobile small cell base stations MSB1 to MSB3 is a conventional direct connection communication method such as Wi-Fi peer-to-peer communication (Wi-Fi direct) and D2D (Device to Device) communication, Method. More specifically, when a mobile small cell base station (e.g., MSB1) establishes a connection with another mobile small cell base station (e.g., MSB2) using a direct connection communication method, And can communicate with the mobile small cell base station MSB2. The infrastructure-based network may include the macro cell base stations MB1 to MB3 and the Internet. The macro cell base stations MB1 to MB3 may be fixed base stations. The small cells of the mobile small cell base stations MSB1 to MSB3 are smaller than the macro cells of the macro cell base stations MB1 to MB3. Mobile small cell base stations (MSB1 to MSB3) can be connected to existing infrastructure based networks through wired or wireless.

In order to configure the multi-hop local network LN4, a terminal information sharing and management technology between the terminals 20a to 20g and the mobile small cell base stations MSB1 to MSB3 and a terminal information sharing and management technology between the mobile small cell base stations MSB1 to MSB3, Information sharing and management technology is required.

In order to realize the inter-terminal communication based on the multi-hop local network LN4, a method of sharing and managing information of the terminals 20a to 20g and a method of sharing and managing information of the terminals 20a to 20g through the multi- A mechanism for exchanging interference information with mobile small cell base stations MSB1 to MSB3 for interference control, and an application mechanism used for data communication in the terminals 20a to 20g are required Do. This will be described in detail with reference to FIG. 3 and FIG.

FIG. 3 is a flowchart illustrating a process of configuring one multi-hop local network (LN4) and a process of performing communication between the terminals 20a and 20e. 3, the mobile stations 20a and 20b included in the mobile small cell base stations MSB1 and MSB3, which are different from each other, are connected to each other via the multi-hop local network LN4 configured based on the direct communication method between the mobile small cell base stations MSB1 to MSB3. And 20e perform data communication with each other.

(S10a, S10b, S20a, S20b, S30a to S30c) for sharing and managing information of the terminals 20a to 20g connected to the mobile small cell base stations MSB1 to MSB3, and An overall connection method procedure including the steps S40, S50, and S60 of transmitting and receiving data by the terminals 20a and 20e through the multi-hop local network LN4 will be described.

First, a connection procedure between mobile small cell base stations MSB1 to MSB3 is performed (S10a, S10b). Specifically, the mobile small cell base station MSB1 establishes a connection for direct communication with the mobile small cell base station MSB2 (S10a), and the mobile small cell base station MSB2 communicates with the mobile small cell base station MSB3 A connection for direct communication can be established (S10b). Various direct communication methods such as Wi-Fi P2P or D2D communication can be used for direct communication connection between mobile small cell base stations MSB1 to MSB3.

If the multihop local network LN4 is configured through the interconnection based on the direct communication scheme supported by each mobile small cell base station MSB1 to MSB3, each mobile small cell base station MSB1 to MSB3 is connected to the terminal 20a (S20a, S20b) and manages (S30a-S30c). Specifically, each of the mobile small cell base stations MSB1 to MSB3 transmits unique identifier information (an application ID, an MAC (medium access control) address, a device ID, etc.) of the terminals 20a to 20g connected thereto, To the adjacent mobile small base stations MSB1 to MSB3. Here, the method of exchanging the information of the terminals 20a to 20g by the mobile small cell base stations MSB1 to MSB3 may include a periodic exchange method and a specific event exchange method. The specific event is generated when the connection state of the terminals 20a to 20g connected to the mobile small cell base stations MSB1 to MSB3 is changed and when the connection state of the mobile small cell base stations MSB1 to MSB3 constituting the multi- A case where the connection state is changed, and the like.

Each of the mobile small cell base stations MSB1 to MSB3 is connected to the mobile small cell base stations MSB1 to MSB3 connected to the terminals 20a to 20g by exchanging information (e.g., unique identifier) of the neighboring terminals 20a to 20g exchanged through steps S20a and S20b, (S30a-S30c), based on the information (e.g., address) of the MS 20 and the MSB3. Specifically, the management table includes a routing table for managing connection information with neighboring mobile small cell base stations MSB1 to MSB3, and a routing table for managing the state information of the terminals 20a to 20g connected to the mobile small cell base stations MSB1 to MSB3 And a terminal information table for managing the terminal information table. Meanwhile, the routing table and the terminal information table may be managed in the form of a single table.

When the terminal information sharing process S20a or S20b and the management process S30a through S30c are completed, the terminal 20a starts communication through the multi-hop local network LN4 (S40, S50, S60). Specifically, the transmitting terminal 20a requests information of the counterpart terminal 20e to communicate with the mobile small cell base station MSB1 to which the transmitting terminal 20a is connected (S40). That is, the terminal 20a requests information of the counterpart terminal 20e to the mobile small cell base station MSB1 to which the terminal 20a communicates with the other terminal 20e through the multi-hop local network LN4. In order for the terminal 20a to perform such a request, an application mechanism used for data communication within the terminal 20a may be applied. That is, when the terminal 20a wants to request information of the counterpart terminal 20e, it uses a unique identifier (e.g., a MAC address, an application ID, a device ID, etc.) for identifying the counterpart terminal 20e. The terminal 20a can transmit a request message including the unique identifier of the terminal 20e to the mobile small cell base station MSB1. The request of the terminal 20a may be performed by an application included in the terminal 20a.

The mobile small cell base station MSB1 receiving the request from the terminal 20a responds the information of the terminal 20e to the terminal 20a (S50). Specifically, the mobile small cell base station MSB1 transmits to the terminal 20a the information of the counterpart terminal 20e (for example, the unique identifier of the terminal 20e) and the counterpart terminal 20e to which the counterpart terminal 20e belongs (For example, the address of the mobile small cell base station MSB3) of the mobile small cell base station MSB3.

When the terminal 20a receives a response from the mobile small cell base station MSB1, the application of the terminal 20a generates a packet (data) based on the received information and performs communication (S60). Specifically, a packet (a packet for the terminal 20e) generated by the terminal 20a is transmitted to the mobile small cell base station MSB1 and directly transmitted between the mobile small cell base station MSB1 and the mobile small cell base station MSB2 Is transmitted to the mobile small cell base station MSB2 through communication and is transmitted to the mobile small cell base station MSB3 through the direct communication between the mobile small cell base station MSB2 and the mobile small cell base station MSB3, And transmitted to the terminal 20e through the base station MSB3. That is, the terminals 20a and 20e in the multi-hop local network LN4 configured through the direct communication connection between the mobile small cell base stations MSB1 to MSB3 can transmit and receive data without passing through the infrastructure based network .

Meanwhile, the communication between the terminals 20a to 20g is performed by at least three mobile small cells, i.e., a mobile terminal, a mobile small cell base station, a mobile terminal, a mobile small cell base station, a mobile small cell base station, May be performed through a multi-hop local network (LN4), such as a communication route from a base station to a terminal. The communication method between the terminals 20a to 20g and the mobile small cell base stations MSB1 to MSB3 or the communication method between the mobile small cell base stations MSB1 to MSB3 and the mobile small cell base stations MSB1 to MSB3 is It can be according to the communication method. The mobile small cell base stations MSB1 to MSB3 can normally transmit the transmission / reception data by utilizing a unique management table (routing table, terminal information table, etc.) even if the communication methods at these access points are different. The management table will be described in detail with reference to FIG.

4 is a diagram showing a management table of a mobile small cell base station through terminal information exchange between mobile small cell base stations. In FIG. 4, the routing tables TB2a to TB2c and the terminal information tables TB1a and TB1c managed by the mobile small cell base stations MSB1 to MSB3 are illustrated. As illustrated in Fig. 4, each of the terminals 20a to 20g may have its own unique identifier (e.g., device IDs (ID # 1 to ID # 7) and the like).

Specifically, the mobile small cell base station MSB1 manages the routing table TB2a and the terminal information table TB1a, and the mobile small cell base station MSB2 manages the routing table TB2b and the terminal information table (not shown) And the mobile small cell base station MSB3 manages the routing table TB2c and the terminal information table TB1c.

The routing tables TB2a to TB2c are information for routing to a destination (for example, IP addresses of mobile small cell base stations MSB1 to MSB3) and interface information (for example, # 1 , # 2).

The terminal information tables TB1a and TB1c include unique identifiers (e.g., device IDs) of the terminals 20a to 20g and addresses of the mobile small cell base stations MSB1 to MSB3 to which the terminals 20a to 20g are connected Address). For example, the terminal information table TB1a includes not only the information of the terminal (for example, 20b) connected to the mobile small cell base station MSB1 but also the information of the terminals 20b to 20g connected to other mobile small cell base stations MSB2 and MSB3 As shown in FIG.

On the other hand, the mobile small cell base stations MSB1 to MSB3 are further exposed to radio wave interference due to their mobility. Therefore, the mobile small cell base stations MSB1 to MSB3 may interfere with the adjacent mobile small cell base stations MSB1 to MSB3. There may be interference between direct communication links of mobile small cell base stations MSB1 to MSB3 or interference between terminals 20a to 20g connected to different mobile small cell base stations MSB1 to MSB3. Therefore, a mechanism for exchanging interference information between the mobile small cell base stations (MSB1 to MSB3) is needed. The interference information exchange mechanism is a mechanism for sharing information (hereinafter, referred to as 'interference control information') for interference control by the mobile small cell base stations MSB1 to MSB3 connected through a direct communication function. Herein, the interference control information includes information on a channel used by the terminals 20a to 20g connected to the mobile small cell base stations MSB1 to MSB3, information on a channel used by the mobile small cell base stations MSB1 to MSB3, MSB3, and the like. The interference control information may be exchanged and updated through a periodic method or a method by an event. Specifically, when the mobile small cell base stations MSB1 to MSB3 provided with the interference control information control the interference to connect with the mobile stations 20a to 20g, or when the mobile small cell base stations MSB1 to MSB3 are connected to the mobile small cell base stations MSB1 to MSB3 The interference control information can be utilized. The interference situation between the terminals 20a to 20g and the mobile small cell base stations MSB1 to MSB3 and the interference situation between the terminals 20a to 20g and the mobile small cell base stations MSB1 to MSB3, The interference control information can be used for the purpose of effectively controlling the interference situation between the MSB1 and MSB3. In addition, for the purpose of effectively controlling the hidden node problem, interference control information can be used. Meanwhile, as an interference control scheme, an interference avoidance scheme, an interference mitigation scheme, or a receiver end interference control scheme through resource selection can be applied.

5 is a diagram showing a management table of the terminals 20a to 20g. Each of the terminals 20a to 20g manages information on its neighboring terminals through a neighboring terminal information table. 5, a neighboring terminal information table TB3a including neighboring terminal information to be managed by the application unit of the terminal 20a and neighboring terminal information to be managed by the application unit of the terminal 20g The neighboring terminal information table TB3g is exemplified.

The neighboring terminal information table TB3a includes unique identifiers (e.g., device IDs (ID # 2 to ID # 7) and the like) of the terminals 20b to 20g neighboring the terminal 20a and neighboring terminals 20b to 20g And an address (e.g., an IP address) of the mobile small cell base stations MSB1 to MSB3. Similarly, the neighboring terminal information table TB3g includes unique identifiers (e.g., device IDs (ID # 1 to ID # 6) and the like) of the terminals 20a to 20f neighboring the terminal 20g and neighboring terminals 20a to 20f (For example, an IP address) of the mobile small cell base stations MSB1 to MSB3 connected to each other.

Each of the terminals 20a to 20g refers to its neighboring terminal information tables TB3a and TB3g when it wants to communicate with another terminal. For example, when the terminal 20a desires to communicate with the terminal 20g, the neighboring terminal information table TB3a of its own uses the unique identifier of the terminal 20g and the mobile small cell base station 20g to which the terminal 20g belongs, (MSB3). If the unique identifier of the terminal 20g and the address of the mobile small cell base station MSB3 to which the terminal 20g belongs are found in the neighboring terminal information table TB3a, (E.g., an IP packet) having an address and a destination address that is the address of the mobile small cell base station MSB3 to which the terminal 20g belongs, and transmits the packet to the mobile small cell base station MSB1. That is, when the information of the counterpart terminal 20g is retrieved in the neighboring terminal information table TB3a, the terminal 20a skips steps S40 and S50 of FIG. 3 and performs the process of S60 of FIG. 3 using the retrieved information .

If the unique identifier of the terminal 20g and the address of the mobile small cell base station MSB3 to which the terminal 20g belongs are not found in the neighboring terminal information table TB3a, (E.g., the unique identifier of the terminal 20g and the address of the mobile small cell base station MSB3 to which the terminal 20g belongs) to the mobile station MSB1. The process of the terminal 20a requesting the information of the terminal 20g and receiving the information of the terminal 20g is the same as that of the steps S40 and S50 of FIG. When the terminal 20a acquires the information of the terminal 20g from the mobile small cell base station MSB1, the terminal 20a acquires the information of the terminal 20a, (E.g., an IP packet), which is the address of the small cell base station MSB3, and transmits it to the mobile small cell base station MSB1. The terminal 20a transmits the information obtained from the mobile small cell base station MSB1 to the neighboring mobile terminal information table (for example, the unique identifier of the terminal 20g and the mobile small cell base station MSB3 to which the terminal 20g belongs) TB3a.

On the other hand, when the mobile small cell base station MSB3 receives the packet generated by the terminal 20a, it refers to the unique identifier of the terminal 20g in the application in the received packet, Packet and changes the destination address of the received packet to the address (e.g., IP address) of the terminal 20g and transmits it to the terminal 20g.

6 is a diagram showing a configuration of the mobile small cell base station 100. As shown in FIG. The mobile small cell base stations MSB1 to MSB3 may be configured to be the same as or similar to the mobile small cell base station 100. [

The mobile small cell base station 100 includes a processor 110, a memory 120, and a radio frequency (RF) converter 130.

The processor 110 may be configured to implement the procedures, functions, and methods associated with the mobile small cell base stations MSB1-MSB3 discussed above. Each configuration of the mobile small cell base station 100 can be executed by the processor 110. [

The memory 120 is coupled to the processor 110 and stores various information related to the operation of the processor 110. [

RF converter 130 is coupled to processor 110 and transmits or receives radio signals. The mobile small cell base station 100 may have a single antenna or multiple antennas.

7 is a diagram showing a configuration of the terminal 200. As shown in Fig. The terminals 20a to 20g may be configured to be the same as or similar to the terminal 200. [

The terminal 200 includes a processor 210, a memory 220, and an RF converter 230.

The processor 210 may be configured to implement the procedures, functions, and methods associated with the terminals 20a-20g described above. Each configuration of the terminal 200 may be executed by the processor 210. [

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

The RF converter 230 is connected to the processor 210 and transmits or receives a radio signal. The terminal 200 may have a single antenna or multiple antennas.

The embodiments of the present invention have been described with reference to the case where the mobile small cell base stations MSB1 to MSB3 constitute the multi-hop local network LN4, but this is merely an example. The embodiment of the present invention can also be applied to a case where a fixed small cell base station constitutes a multi-hop local network.

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 (20)

A method for a first mobile base station to communicate,
Establishing a connection with the second mobile base station to directly communicate with a second mobile base station without passing through a first network based infrastructure;
Transmitting information of a first terminal connected to the first mobile base station to the second mobile base station;
Receiving information of a second terminal connected to the second mobile base station from the second mobile base station; And
Storing information of the second terminal
/ RTI > The method according to claim 1,
The first mobile base station and the second mobile base station are mobile small cell base stations,
Wherein the first network comprises a fixed macro cell base station
Communication method. The method according to claim 1,
Wherein the information of the second terminal includes a unique identifier of the second terminal,
Wherein the step of storing information of the second terminal comprises:
And storing the unique identifier of the second terminal together with the address of the second mobile base station in a terminal information table storing information of the first terminal
Communication method. The method of claim 3,
Storing in the routing table information for routing to the second mobile base station, the address including the address of the second mobile base station
Lt; / RTI > The method according to claim 1,
When receiving a first message requesting information of a third terminal from the first terminal, transmitting a unique identifier of the third terminal and an address of a third mobile base station to which the third terminal is connected to the first terminal Further comprising:
Wherein the first message includes a unique identifier of the third terminal
Communication method. 6. The method of claim 5,
Receiving first data for the third terminal from the first terminal;
Transmitting, when the third terminal is the second terminal, the first data to the second mobile base station being the third mobile base station; And
If the third terminal is not the second terminal, transmitting the first data to the third mobile base station via the second mobile base station
Lt; / RTI > 6. The method of claim 5,
Prior to transmitting to the first terminal,
Receiving a unique identifier of the third terminal from the second mobile base station and storing it in the terminal information table together with the address of the third mobile base station when the third terminal is not the second terminal; And
Storing, in the routing table, information for routing to the third mobile base station, including the address of the third mobile base station, when the third mobile base station is not the second mobile base station
Lt; / RTI > The method according to claim 6,
If the third terminal is not the second terminal, the first data comprises a hop between the first mobile base station and the second mobile base station and a hop between the second mobile base station and the fourth mobile base station, To the third mobile base station via at least the containing multiple hops,
The destination address of the first data is changed to the address of the third terminal by the third mobile base station
Communication method. The method according to claim 1,
Sharing information for interference control with the second mobile base station
Lt; / RTI > 10. The method of claim 9,
Wherein the step of sharing information for interference control comprises:
Sharing information of a channel used by the first terminal or the second terminal with the second mobile base station; And
And sharing information of a channel for connection between the first mobile base station and the second mobile base station with the second mobile base station
Communication method. The method according to claim 1,
Wherein establishing a connection with the second mobile base station comprises:
Establishing a connection between the first mobile base station and the second mobile base station using one of a connection method of Wi-Fi peer to peer (P2P) communication and a connection method of D2D (Device to Device) communication
Communication method. The method according to claim 1,
Wherein the step of transmitting information of the first terminal comprises:
And periodically transmitting information of the first mobile station to the second mobile base station
Communication method. The method according to claim 1,
Wherein the step of transmitting information of the first terminal comprises:
And transmitting the information of the first terminal to the second mobile base station when the connection state between the first mobile base station and the third mobile base station or the connection state of the first terminal is changed
Communication method. A method for a first terminal to communicate,
Transmitting a first message including a unique identifier of the second terminal to a second mobile base station communicating directly with the first mobile base station without passing through the first network based on the infrastructure, ;
Receiving, from the second mobile base station, a unique identifier of the second terminal and an address of a third mobile base station to which the second terminal is connected;
Generating first data based on the unique identifier of the second terminal and the address of the third mobile base station, wherein the address of the third mobile base station is a destination address; And
And transmitting the first data to the second mobile base station
Communication method. 15. The method of claim 14,
The first data is transmitted to the second terminal through direct communication between the first mobile base station and the second mobile base station when the third mobile base station is the first mobile base station,
The destination address of the first data is changed to the address of the second terminal by the first mobile base station
Communication method. 15. The method of claim 14,
The unique identifier of the second terminal includes at least one of a Medium Access Control (MAC) address of the second terminal, an application ID of the second terminal, and a device ID of the second terminal
Communication method. 15. The method of claim 14,
Prior to transmitting the first message,
Further comprising searching information of the second terminal in a neighboring terminal information table,
Wherein the transmitting the first message comprises:
And transmitting the first message to the second mobile base station if information of the second mobile station is not found in the neighboring terminal information table,
Wherein the neighboring terminal information table includes a unique identifier of a neighboring terminal neighboring the first terminal and an address of a mobile base station to which the neighboring terminal is connected
Communication method. Memory; And
And a processor coupled to the memory and controlling the first mobile station to communicate directly with the first mobile station without passing through an infrastructure based network,
The processor comprising:
Wherein the first mobile station receives and stores information on a terminal connected to the first mobile base station from the first mobile station and stores the received unique identifier of the second terminal, And transmits the address of the second mobile base station to the first mobile station
Mobile base station. 19. The method of claim 18,
The processor comprising:
Storing information on a terminal connected to the first mobile base station in a terminal information table together with an address of the first mobile base station and storing information on a terminal connected to the second mobile base station different from the first mobile base station, Stores the routing information including the address of the first mobile base station and the routing information including the address of the second mobile base station in a routing table
Mobile base station. 19. The method of claim 18,
The processor comprising:
For interference control, information of a channel for direct communication connection with the first mobile base station and information of a channel for a terminal connected to the first mobile base station is shared with the first mobile base station
Mobile base station.
KR1020150041017A 2015-03-24 2015-03-24 Communication method of mobile base station, and communication method of terminal KR20160114805A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20180082974A (en) * 2017-01-10 2018-07-19 한국전자통신연구원 Mobile basestation device
WO2022240047A1 (en) * 2021-05-11 2022-11-17 주식회사 한화 Base station device for blasting work and tracking network system including same

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20180082974A (en) * 2017-01-10 2018-07-19 한국전자통신연구원 Mobile basestation device
WO2022240047A1 (en) * 2021-05-11 2022-11-17 주식회사 한화 Base station device for blasting work and tracking network system including same

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