KR101823293B1 - Backpack Type VHF/UHF TVWS Backhaul-based LTE Mobile Base Station capable of Self-Operation Wireless Network and Group/Private Communication - Google Patents

Abstract

The present invention relates to a backpack type LTE mobile base station easy to move which uses a TV white space (TVWS) of a VHF or a UHF unlicensed band with wireless backhaul and is capable of providing an LTE wireless network service independently. The backpack type LTE mobile base station disclosed in the present invention comprises: an LTE signal unit performing a function of an LTE base station to provide an LTE service to terminals; a TVWS signal unit performing the TVWS frequency band communications which function as the wireless backhaul for transmitting data, coming into through the LTE signal unit, to an LTE core network; a power source unit supplying needed power to the LTE mobile base station using at least one among an external commercial power source, a battery and a photovoltaic facility; a manager interface providing information on a state of the LTE mobile station to a manager and receiving information needed for operating the LTE mobile base station from the manager; and an EPC server performing an EPC function existing in the LTE core network to form an independent LTE core network in the case that the wireless backhaul function is not operated because the TVWS communications are not allowed. The present invention can be implemented in a backpack type to be shouldered and moved by the manager. The present invention can easily and rapidly construct a wireless network when a disaster occurs or a large crowd gathers and can distribute overload of a previously installed LTE base station.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a VHF / UHF TVWS backhaul-based backplane LTE mobile base station system and method for single wireless network operation and group / }

The present invention relates to a VHF / UHF TVWS backhaul-based backplane LTE mobile base station capable of single wireless network operation and group / individual call, more specifically, using a TVWS frequency of a VHF or UHF license-exempt band as a wireless backhaul and a PTT client application The built-in terminal and the mobile base station serviced by the LTE service can be used as an LTE antenna, an LTE HPA, an LTE RF Transceiver, an LTE Modem & Controller, a hub, an embedded EPC and PTT server, a TVWS antenna, a TVWS HPA, a TVWS RF Transceiver, , LCD user interface, power supply and battery, GPS antenna and receiver. When connected to LTE core network with TVWS wireless backhaul, it provides LTE service using Main EPC server, or EPC To a mobile backpack LTE mobile station capable of providing a single LTE radio network using a PTT server.

The damage caused by disasters in Korea has been declining since the 1990s, but still continues to be higher than that of developed countries. In addition, the damage caused by disasters is decreasing, but the disaster safety net project is needed at home and abroad due to the enlargement, concentration, and new disaster type of disaster. However, disasters and disasters can cause disaster safety nets to collapse and urgent restoration of the disaster safety nets is required.

Also, in a situation where large crowds gather, it is necessary to additionally install mobile base stations and disperse the overloads urgently when all the load can not be handled with existing LTE base stations only.

The conventional mobile base station, which is installed urgently, is mostly used for a vehicle, and uses a backhaul optical communication, a microwave, and / or a satellite. However, there is a problem that a visible distance is secured when using a microwave. In the case of a satellite, there is a problem that usage is restricted in a building, a price is high and a transmission speed is not high. In the case of using an optical communication as a back- And demolition can not be performed quickly.

 In addition, there may be cases where the wireless communication network itself can not be constructed due to a breakdown of electricity due to a disaster or the like or destruction of a network line. In such a case, it is necessary to provide a temporary mobile communication network so that people in the same area can cooperate with each other by providing a minimum disaster broadcasting service.

It is an object of the present invention to provide an LTE service in an urgent manner, to construct an LTE radio network by using an embedded EPC, to provide a PTT function using a built-in PTT server and a PTT application of a smart phone And is capable of moving using an antenna beam pattern having a wide VHF & UHF TVWS frequency.

According to an aspect of the present invention, there is provided a backpack type LTE mobile station capable of providing an LTE service in an emergency, the LTE mobile station including an LTE signal unit for providing an LTE service to terminals by performing an LTE base station function, (LTE) mobile station using at least one of a TVWS signal unit for performing TVWS (TV White Space) frequency band communication functioning as a wireless backhaul for transmitting data to an LTE core network, an external commercial power source, a battery, A manager interface for providing status information of the LTE mobile station to an administrator and receiving information required for operation of the LTE mobile station from the manager, The base station performs an EPC function in the LTE core network, An EPC server that can form an LTE core network, and can be implemented in a backpack so that the manager can move around.

In addition, the mobile communication terminal may further include a PTT server for providing a push to talk (PTT) function for providing a group or individual call service between LTE service users connected through the LTE signaling unit.

A hub may be used for data communication between the LTE signal unit, the TVWS signal unit, and the EPC server.

The manager interface provides status information of the LTE mobile BS to a control center connected to the LTE core network and receives information required for operation of the LTE mobile BS from the control center.

According to an aspect of the present invention, there is provided a backpack type LTE service providing system capable of providing an LTE service in an urgent manner, the LTE service providing system performing an LTE base station function to provide an LTE service to terminals, A wireless backhaul using a TVWS frequency band communication for the backpack type LTE mobile base station and a backpack type LTE mobile base station according to any one of claims 1 to 3, And a wireless backhaul donor that relays data between the base stations.

Here, the wireless backhaul donor may include an LTE signaling unit connected to the LTE base station performing an LTE terminal function and connected to the LTE core network; A TVWS signal part for performing TVWS (TV White Space) frequency band communication functioning as a wireless backhaul with the backpack type LTE mobile station, a power source necessary for the wireless backhaul donor using at least one of an external commercial power source, a battery, And a manager interface for providing status information of the wireless backhaul donor to the manager and receiving information necessary for operation of the wireless backhaul donor from the manager, wherein the manager interface is implemented as a backpack type .

In addition, the wireless backhaul donor may further include a WAN signal unit for connecting to the LTE core network using a Wide Area Network (WAN) when connection with the LTE core network is impossible.

The manager interface provides status information of the wireless backhaul donor to a control center connected to the LTE core network and receives information necessary for operating the wireless backhaul donor from the control center.

Also, the TVWS signal unit receives the GPS signal and confirms its position. Based on the location information and the usage information in the TVWS DB server connected to the LTE core network, a TVWS communication channel Alternatively, the frequency of the TVWS band may be measured to select a TVWS communication channel to communicate with the LTE mobile base station based on the backpack wireless backhaul.

A method for providing an LTE service to an LTE terminal in a backpack LTE mobile station of a backpack type LTE service providing system of claim 5 capable of providing an LTE service urgently according to the present invention, Receiving a connection request from the main EPC server using the TVWS frequency band communication when the backhaul is connected to the main EPC server of the LTE core network; Providing an LTE service to an LTE terminal, receiving a connection request of the LTE terminal, transferring the connection request to a built-in EPC server when the backhaul is not connected, Receiving an access grant from the EPC server, and providing an LTE service to the LTE terminal. The.

The LTE mobile base station based on the backpack type wireless backhaul according to the present invention can easily construct an emergency radio network in the event of a disaster, a disaster or a large crowd gathering, and can distribute the overload of the existing installed LTE base stations.

In addition, the LTE mobile base station based on the backpack type wireless backhaul according to the present invention has an effect of providing a mobile communication service to a user by constructing and operating a wireless network alone when the backhaul does not operate.

In addition, the LTE mobile base station based on the backpack type wireless backhaul according to the present invention has a built-in PTT server and can provide Push to Talk service among users.

In addition, the LTE mobile base station based on the backpack type wireless backhaul according to the present invention has the effect of guaranteeing the mobility of the mobile base station in a wider range by using the TVWS of the VHF or UHF license-exempt band having a wide antenna backbone.

FIG. 1 illustrates a system for providing emergency LTE communication service according to an embodiment of the present invention. Referring to FIG.
2 is a block diagram of a mobile station 200 according to an embodiment of the present invention.
3 is a block diagram of a wireless backhaul donor 100 in accordance with an embodiment of the present invention.
4 and 5 are diagrams illustrating a method for providing an LTE service to a mobile station LTE terminal according to an embodiment of the present invention.

In order to clearly illustrate the present invention, parts not related to the description are omitted, and the same or similar components are denoted by the same reference numerals throughout the specification.

Throughout the specification, when a part is referred to as being "connected" to another part, it includes not only "directly connected" but also "electrically connected" with another part in between . Also, when a part is referred to as "including " an element, it does not exclude other elements unless specifically stated otherwise.

If any part is referred to as being "on" another part, it may be directly on the other part or may be accompanied by another part therebetween. In contrast, when a section is referred to as being "directly above" another section, no other section is involved.

The terms first, second and third, etc. are used to describe various portions, components, regions, layers and / or sections, but are not limited thereto. These terms are only used to distinguish any moiety, element, region, layer or section from another moiety, moiety, region, layer or section. Thus, a first portion, component, region, layer or section described below may be referred to as a second portion, component, region, layer or section without departing from the scope of the present invention.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. The singular forms as used herein include plural forms as long as the phrases do not expressly express the opposite meaning thereto. Means that a particular feature, region, integer, step, operation, element and / or component is specified and that the presence or absence of other features, regions, integers, steps, operations, elements, and / It does not exclude addition.

Terms indicating relative space such as "below "," above ", and the like may be used to more easily describe the relationship to other portions of a portion shown in the figures. These terms are intended to include other meanings or acts of the apparatus in use, as well as intended meanings in the drawings. For example, when inverting a device in the figures, certain portions that are described as being "below" other portions are described as being "above " other portions. Thus, an exemplary term "below" includes both up and down directions. The device can be rotated by 90 degrees or rotated at different angles, and terms indicating relative space are interpreted accordingly.

Unless otherwise defined, all terms including technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Commonly used predefined terms are further interpreted as having a meaning consistent with the relevant technical literature and the present disclosure, and are not to be construed as ideal or very formal meanings unless defined otherwise.

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.

FIG. 1 illustrates a system for providing emergency LTE communication service according to an embodiment of the present invention. Referring to FIG.

As shown in FIG. 1, a system for providing an emergency LTE communication service according to the present invention may include a wireless backhaul donor 100 and a mobile station 200.

The wireless backhaul donor 100 is connected to an existing LTE core network 20 and communicates with the mobile station 200 through a TVWS frequency band to provide a wireless backhaul Can be performed. The TVWS frequency band refers to an empty frequency band not used by broadcasters in the VHF and UHF frequency bands allocated for TV broadcasting and is a license-exempt band that can be used if all conditions of the government's radio wave regulation are satisfied. Specifically, it refers to a broadcasting frequency band in an unused frequency band or an area where a radio wave for broadcasting is insufficient depending on a band and a region which are left vacant for fear of frequency interference between broadcasting companies, and in a time, The TVWS band is characterized in that a frequency band that can be used spatially in time can be changed. Thus, the TVWS available channel that can be used as a wireless backhaul can be acquired by a method of identifying the current location by the GPS, accessing the TVWS DB server 10 existing in the LTE core network 20, have.

The VHF and UHF bands, which can be used in the TVWS frequency band, are much lower than the frequency band (2GHz to 5GHz) used by conventional LTE or WiFi in the frequency range of 54MHz to 806MHz and the beam pattern radiated from the antenna can be broadened There is an advantage that a single wireless backhaul donor can provide a wider range of wireless backhaul services.

Referring to FIG. 1, the wireless backhaul donor 100 may be connected to the LTE core network 20 wirelessly or by wire. For example, the wireless backhaul donor 100 has an LTE terminal function and can connect to the LTE core network 20 using the LTE communication method with the LTE base station 30. As another example, the wireless backhaul donor 100 may be connected to the LTE core network 20 using a wide area network (WAN). The LTE core network 20 is connected to an evolved packet core (EPC) server 60 for supporting an existing LTE mobile service. Hereinafter, an EPC server connected to the LTE core network 20 is referred to as a main EPC server 60. [ The EPC equipment includes a Mobility Management Entity (MME) that performs call processing related operations such as session management and terminal mobility management, and a handover function between the LTE base station or the LTE core network 20 and another 3GPP A Serving Gateway (S-GW) serving as a reference point, a P-GW (PDN Gateway) providing connectivity between the UE and the external data network and serving as a reference point for handover between the LTE core network 20 and a non-3GPP network, And a Home Subscriber Server (HSS), which is a database for storing subscriber information. The EPC equipment may be separately provided in the LTE core network 20, but may be provided together in one equipment. The LTE core network 20 is also provided with a TVWS DB server 10 for allocating TVWS channels, a PTT server 70 for enabling group / individual radio communication, a mobile station 200, A control center 50 for controlling the backhaul donor 100 can be connected. Here, the PTT server connected to the LTE core network 20 is referred to as a main PTT server 70 for identification.

When a distress accident occurs in a mountainous area where an LTE mobile communication network is not installed, or when a marine accident occurs, when the existing LTE base station or LTE mobile communication network collapses due to a collapse of a building, Tunnels, and large-scale performances, it is possible to provide LTE services in an emergency.

Particularly, the mobile base station 200 proposed in the present invention has an advantage that it can be easily installed even in a region where a vehicle can not enter because the mobile base station 200 is made of a rucksack.

The mobile station 200 can use the TVWS frequency band as a backhaul. That is, it is possible to use the TVWS frequency band communication provided by the wireless backhaul donor 100 to connect to the LTE core network 20.

2 is a block diagram of a mobile station 200 according to an embodiment of the present invention.

2, the mobile station 200 includes an LTE signal unit 210, a TVWS signal unit 220, an EPC server 230, a PTT server 240, an administrator interface 250, and a power unit 260 .

The LTE signal unit 210 may provide an LTE communication service to a terminal within a service range capable of transmitting and receiving an LTE RF signal by performing a function of the LTE base station. The LTE signal unit 210 includes an LTE modem and a control unit 213 for providing a physical layer for LTE communication, a MAC layer protocol, and upper control logic, a transceiver 212 for transmitting and receiving an LTE RF signal, And a high power amplifier (HPA) That is, an LTE terminal in an area covered by the LTE signal unit 210 of the mobile station 200 can perform LTE communication using the LTE signal unit 210 as a base station.

The TVWS signal unit 220 can transmit and receive a TVWS frequency band signal used as a backhaul of the mobile station 200. The TVWS signal unit 220 includes a TVWS modem and a control unit 223 for providing a physical layer for TVWS frequency band communication, a MAC layer protocol and an upper control logic, a transceiver 222 for transmitting and receiving a TVWS RF signal, And a high power amplifier (HPA) 221 that can amplify the input signal.

In addition, the mobile station 200 may include an EPC server 230. EPC (Enhanced Packet Core) is a core device for supporting LTE service, so that a terminal connected to a base station can perform communication only when EPC is present. When a wireless backhaul is provided by the wireless backhaul donor 100, the LTE service can be provided by the main EPC server 60 connected to the LTE core network 20. However, if a wireless backhaul is not provided, The base station 200 can provide the LTE service by executing the embedded EPC server 230 alone. In this case, an area where the LTE service can be provided may be limited to a range that the LTE signal of the mobile station 200 can reach.

In addition, the mobile station 200 may include a PTT (Push to Talk) server 240 to provide a PTT service to a terminal having a PTT client application. The PTT service is a kind of radio service that can use a terminal like a walkie talkie. It is a service that allows a plurality of people to simultaneously listen to what one person is talking at the touch of a button. And may transmit the disaster broadcast and necessary text messages to all terminals connected to the LTE service of the mobile station 200 using the disaster broadcast and necessary text messages. If a wireless backhaul is provided by the wireless backhaul donor 100, the PTT service can be provided by the main PTT server 70 connected to the LTE core network 20. However, if no wireless backhaul is provided As described above, the PTT service can be provided using the built-in PTT server 240.

In addition, the mobile station 200 may include an administrator interface 250. The manager interface displays the status of the mobile station 200 to the user and allows the user to input information necessary for the operation of the mobile station 200. The manager interface 250 may be implemented using a TFT-LCD and / or a touch screen. The status information and the operation information may be transmitted to the control center 50 through the backhaul, and the control center 50 may display or input operation information using the Web-UI.

The power supply unit 260 supplies power to the mobile station 200. If external AC power or DC power can be connected, an external power source can be used. However, if an external power source can not be used, a battery inside the mobile communication base station 200 can supply power to the mobile base station 200. In addition, the power supply unit 260 may additionally include a solar power generation facility to supply power to the mobile station 200 or to charge the battery.

The LTE signal unit 210 of the mobile station 200 performs data communication using a TVWS signal unit 220 for providing a backhaul and a communication device such as a hub or a router in the inside of the LTE signal unit 210, And transmit the data to the LTE core network 20 connected by a wireless backhaul. If no wireless backhaul is provided, data can not be transferred to the LTE core network 20 through the TVWS signaling unit 220 and data is transmitted to the internal EPC server 230, So that the network can be formed.

3 is a block diagram of a wireless backhaul donor 100 in accordance with an embodiment of the present invention.

3, the wireless backhaul donor 100 includes an LTE signal unit 110 and / or a WAN signal unit 170, a TVWS signal unit 120, an EPC server 130, a PTT server 140, (150), and a power supply unit (160).

The LTE signal unit 110 may operate as an LTE terminal. The LTE signal unit 210 of the wireless backhaul donor 100 is connected to the LTE base station 30 and connected to the LTE core network 20 by an LTE terminal modem including a MAC layer and / ). ≪ / RTI > The wireless backhaul donor 100 includes a WAN signal unit 170 including an Ethernet interface or a WiFi interface and is connected to the LTE core network 20 using a WAN (Wide Area Network) . At this time, only one of the LTE signal unit 110 and the WAN signal unit 170 is controlled to operate, and only when the LTE signal unit 110 of the wireless backhaul donor 100 can not be connected to the LTE base station 30, And can be controlled to connect to the LTE core network 20 using the signal unit 170.

The TVWS signal unit 120 can provide communication using a TVWS frequency band signal used as a backhaul of the mobile station 200. [ That is, the mobile station 200 can transmit data to the LTE core network 20 and receive data from the LTE core network 20 using the TVWS frequency band communication provided by the wireless backhaul donor 100 as a backhaul .

That is, the wireless backhaul donor 100 can perform a gateway function between the LTE core network 20 and the mobile station 200. At this time, a plurality of mobile base stations 200 may be connected to one wireless backhaul donor 100. That is, by using the TVWS signal of the VHF or UHF license-exempt band for the wireless backhaul to be provided to the mobile station 200, it is possible to provide a wireless backhaul service in a wider range than that using the existing microwave or WiFi, A plurality of mobile base stations 200 can be connected to a single wireless backhaul donor 100. Also, by providing a wide range of wireless backhaul areas, the mobility of the mobile base station 200 can be ensured and remote wireless transmission / reception becomes possible.

The TVWS signal unit 120 includes a TVWS modem and a control unit 123 for providing a physical layer for TVWS band communication, a MAC layer protocol and an upper layer control logic, a transceiver 122 for transmitting and receiving a TVWS RF signal, And a high power amplifier (HPA) 121 capable of amplifying the signal. In particular, the TVWS signal unit 120 in the wireless backhaul donor 100 may select a TVWS communication channel to be used for communication with the mobile station 200. One example of the selection method is to confirm the location of the wireless backhaul donor 100 based on the GPS signal received via the GPS antenna 124 and to transmit the location information of the wireless backhaul donor 100 from the TVWS DB server 10 connected to the LTE core network 20 A TVWS band channel available at the above location can be acquired and one of them can be selected. As another alternative, the TVWS signal unit 120 may measure the frequency intensities in the surrounding TVWS band, and may select a channel having a weak frequency intensity as the TVWS communication channel based on the measurement result.

In addition, the wireless backhaul donor 100 may include an EPC server 130. EPC is a core network of LTE mobile communication network and EPC is required so that a terminal connected to a base station can perform communication. If the LTE core network 20 can not be connected by the wireless backhaul donor 100, the wireless backhaul donor 100 may function as an EPC server of the LTE core network. Therefore, it is possible to provide LTE services to all terminals within the coverage of a plurality of mobile stations 200 connected to the wireless backhaul donor 100. That is, when the EPC server of the wireless backhaul donor 100 is operated while the EPC server in the mobile base station 200 provides the LTE service only to the terminals within the coverage of the mobile base station 200, the wireless backhaul donor 100 It is possible to provide an LTE service in a wider range covered by the plurality of mobile stations 200 connected to the mobile station 200. [

In addition, the wireless backhaul donor 100 may include a PTT (Push to Talk) server 140 to provide a PTT service to a terminal having a PTT client. It is possible to transmit the disaster broadcast and necessary text messages to all terminals connected to the LTE service of the plurality of mobile stations 200 by using this, so that a PTT service in a wider range than the service by the mobile station 200 alone is possible . If the LTE signaling unit 110 or the WAN signaling unit 170 is connected to the LTE core network 20, the PTT server 70 connected to the LTE core network 20 provides the PTT service And the built-in PTT server 140 may not operate.

In addition, the wireless backhaul donor 100 may include an administrator interface 150. The manager interface displays the status of the wireless backhaul donor 100 to the user and enables the user to input information necessary for operation of the wireless backhaul donor 100. The manager interface 150 may be implemented using a TFT-LCD and / or a touch screen. The status information and operation information may also be transmitted to the control center 50 via WAN or LTE communication, and the control center 50 may display or input operational information using the Web-UI.

The power supply unit 160 supplies necessary power to the wireless backhaul donor 100. If the external AC power or DC power can be connected, the external power can be used. However, if the external power is not available, the internal battery can be used to supply power to the wireless backhaul donor 100. In addition, the power supply unit 160 may additionally include a solar power generation facility to supply power to the wireless backhaul donor 100 or to charge the battery.

The LTE signal unit 110 or the WAN signal unit 170 and the TVWS signal unit 120 of the wireless backhaul donor 100 perform data communication using a router as an example and transmit the data to the mobile base station 200 Data may be transmitted to the LTE core network 20 or a signal from the LTE core network 20 may be transmitted to the mobile base station 200. If the LTE core network 20 is not connected, data can not be transferred to the LTE core network 20 through the LTE signal unit 110 and the WAN signal unit 170, and the data can be transmitted through the TVWS signal unit 120 The incoming data is transmitted to the internal EPC server 130, and the LTE core network can be formed by the wireless backhaul donor 100 and the plurality of mobile stations 200.

2 and 3, since the wireless backhaul donor 100 and the mobile station 200 have almost the same blocks, they can be implemented in the same hardware platform. However, the wireless backhaul donor 100 performs a terminal function of the LTE communication and performs the base station function of the TVWS communication, while the mobile base station 200 performs the base station function of the LTE communication and performs the terminal function of the TVWS communication This difference can be implemented without changing the hardware configuration by changing the software, though there is a difference.

Therefore, the wireless backhaul donor 100 and the mobile base station 200 can be implemented in the same hardware configuration, and can also be implemented in the form of a backpack so that a person can quickly move around.

4 and 5 are diagrams illustrating a method for providing an LTE service to a mobile station LTE terminal according to an embodiment of the present invention.

4 and 5, in order to provide an LTE service to an LTE terminal within the coverage of the mobile station 200 after the above-mentioned LTE service providing system is installed, an access request is received from the LTE terminal (S410, If the backhaul connection to the LTE core network 20 is connected, the connection request is transmitted to the main EPC server 60 of the LTE core network using the TVWS frequency band communication (S420). If the backhaul connection to the LTE core network 20 is not connected, the connection request may be transmitted to the EPC server 230 included in the mobile station 200 (S520). After receiving the connection approval from the main EPC server 60 or the embedded EPC server 230 at step S430, the LTE terminal may provide the LTE service at step S440.

In this case, when the backhaul is connected, the LTE terminal is connected to the main EPC server 60 of the LTE core network so that the LTE terminal can receive all the LTE services. However, if the backhaul is not connected, . ≪ / RTI >

The LTE mobile base station, the wireless backhaul donor, and the LTE service system using the LTE mobile station as described in the present invention can provide an LTE service by restoring and constructing an LTE radio network urgently in a disaster and a distress situation. The PTT server can operate the independent wireless network and can have the advantage and the advantage that the group call can be enabled.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention as defined by the following claims and their equivalents. Only. It is intended that the present invention covers the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents. .

100: Wireless backhaul donor
200: mobile base station
110 and 210: LTE signal part
120, 220: TVWS signal section
130, 230: Embedded EPC server
140, 240: a built-in PTT server
150, 250: Manager interface
160, 260:
170: WAN signal section

Claims (13)

delete delete delete delete delete delete delete delete delete As a backpack type LTE service providing system capable of urgently providing LTE service,
A backpack type LTE mobile station that provides an LTE service to terminals by performing an LTE base station function and uses TVWS communication by wireless backhaul; And
And a wireless backhaul donor connected to the LTE core network and providing a wireless backhaul using TVWS frequency band communication for the LTE mobile station and relaying data between the LTE core network and the LTE mobile station,
Wherein the wireless backhaul donor comprises:
An LTE signaling unit connected to the LTE base station by performing an LTE terminal function and connected to the LTE core network;
A TVWS signal unit for performing TVWS (TV White Space) frequency band communication functioning as a wireless backhaul with a plurality of the backpack type LTE mobile stations;
A power supply unit for supplying power to the wireless backhaul donor using at least one of an external commercial power source, a battery, and a photovoltaic power generation facility;
An administrator interface that provides status information of the wireless backhaul donor to an administrator and receives information necessary for operating the wireless backhaul donor from the manager;
An EPC server that performs an EPC function in the LTE core network to form a single LTE core network together with a plurality of the LTE mobile base stations when the connection to the LTE core network is impossible; And
Providing a push to talk (PTT) function for providing a group or individual call service between a plurality of LTE mobile base stations and LTE service users provided by the wireless backhaul donor when the connection to the LTE core network is impossible A PTT server,
The backpack type LTE mobile station includes:
An LTE signaling unit for performing an LTE base station function and providing an LTE service to terminals;
A TVWS signal unit for performing TVWS (TV White Space) frequency band communication functioning as a wireless backhaul for transmitting data received through the LTE signaling unit to the LTE core network;
A power supply unit for supplying power to the LTE mobile station using at least one of an external commercial power source, a battery, and a photovoltaic power generation facility;
An administrator interface for providing status information of the LTE mobile station to an administrator and receiving information required for operation of the LTE mobile station from the manager;
An EPC server configured to perform an EPC function in the LTE core network to form a unique LTE core network of the LTE mobile station alone when the TVWS communication can not be performed and the wireless backhaul function does not operate; And
And a PTT server for providing a push to talk (PTT) function for providing a group or individual call service between LTE service users connected through the LTE signaling unit when the TVWS communication is impossible and the wireless backhaul function is not operated ,
Wherein the wireless backhaul donor provides an LTE service and a PTT service to all terminals within a range covered by a plurality of backhaul LTE mobile stations connected to the wireless backhaul donor using an EPC server and a PTT server in the wireless backhaul donor,
The radio backhaul donor measures frequency intensities in the surrounding TVWS band, selects a channel with weak frequency strength as a TVWS communication channel based on the measurement result,
Wherein the wireless backhaul donor and the backpack LTE mobile base station are implemented in the same hardware configuration and are implemented in a backpack so that a person can quickly move around,
Backpack type LTE service delivery system.
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