KR20130041660A - System and method for data transmission in virtualization structure - Google Patents

System and method for data transmission in virtualization structure Download PDF

Info

Publication number
KR20130041660A
KR20130041660A KR1020110106058A KR20110106058A KR20130041660A KR 20130041660 A KR20130041660 A KR 20130041660A KR 1020110106058 A KR1020110106058 A KR 1020110106058A KR 20110106058 A KR20110106058 A KR 20110106058A KR 20130041660 A KR20130041660 A KR 20130041660A
Authority
KR
South Korea
Prior art keywords
base station
information
terminal
virtualization system
data transmission
Prior art date
Application number
KR1020110106058A
Other languages
Korean (ko)
Inventor
이성욱
Original Assignee
주식회사 케이티
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 주식회사 케이티 filed Critical 주식회사 케이티
Priority to KR1020110106058A priority Critical patent/KR20130041660A/en
Publication of KR20130041660A publication Critical patent/KR20130041660A/en

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/022—Site diversity; Macro-diversity
    • H04B7/024—Co-operative use of antennas of several sites, e.g. in co-ordinated multipoint or co-operative multiple-input multiple-output [MIMO] systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413—MIMO systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
    • H04B7/0621—Feedback content
    • H04B7/063—Parameters other than those covered in groups H04B7/0623 - H04B7/0634, e.g. channel matrix rank or transmit mode selection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
    • H04B7/0621—Feedback content
    • H04B7/0632—Channel quality parameters, e.g. channel quality indicator [CQI]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
    • H04B7/0636—Feedback format
    • H04B7/0639—Using selective indices, e.g. of a codebook, e.g. pre-distortion matrix index [PMI] or for beam selection

Abstract

When the terminal receives a broadcast signal broadcasted from a first base station to which the terminal is connected and a second base station adjacent to the first base station, the terminal generates an event message if the broadcast signal broadcast from the second base station is greater than a preset threshold value. Generates and transmits the event occurrence message generated by the terminal to the virtualization system. The virtualization system instructs the second base station to receive a SRS (Sounding Reference Signal) to the terminal based on the event occurrence message received from the first base station, and the second base station delivers the SRS received from the terminal to the virtualization system. Compute the cell reference signal value. The virtualization system transmits a control information message to the first base station and the second base station, and instructs data transmission to the terminal through the first base station and the second base station.

Description

System and method for data transmission in virtualization structure

The present invention relates to a data transmission system and method in a virtualization architecture.

MIMO (Multi Input Multi Output) is a spatial multiplexing method that provides data to a user through a transmission method for transmitting and receiving different data to a plurality of antennas spaced apart from each other.

When such a MIMO scheme is used in Long Term Evolution (LTE), which is a fourth generation mobile communication, since one DU (Data Unit) controls one RU (Radio Unit), one RU is required to construct a MIMO system. Many ports must be fitted separately. In other words, when sending data in 2 × 2, two transmitting ports and receiving ports are required, and in case of providing data in 4 × 4, four transmitting and receiving ports are required, respectively. And design and construction costs.

Accordingly, the present invention provides a data transmission system and method in a virtualization structure that can provide data to a user in LTE MIMO without additional RU development.

The data transmission method which is one feature of the present invention for achieving the technical problem of the present invention,

Receiving, by a terminal, a broadcast signal broadcast from a first base station to which the terminal is connected and a second base station adjacent to the first base station; Generating, by the terminal, an event occurrence message if the broadcast signal broadcast from the second base station is greater than a preset threshold; Transmitting, by the first base station, an event occurrence message generated by the terminal to the virtualization system; Instructing, by the virtualization system, to receive a Sounding Reference Signal (SRS) to the second base station to the terminal based on the event occurrence message received from the first base station; Calculating, by the virtualization system, a cell reference signal value when the second base station delivers the SRS received from the terminal to the virtualization system; And transmitting, by the virtualization system, a control information message to the first base station and the second base station, and instructing data transmission to the terminal through the first base station and the second base station.

The calculating of the cell reference signal value may include: determining whether the calculated cell reference signal value exceeds a preset threshold value; And generating control information including a cell ID, antenna port information, and a data transmission method when the threshold value is exceeded.

The cell reference signal value may include a channel quality indicator (CQI), a precoding matrix indicator (PMI), and a rank indicator (RI).

After the step of instructing the data transmission, the first base station and the second base station changing information based on the cell ID and antenna port information, respectively; Transmitting data by the first base station and the second base station to the terminal based on the data transmission method; And the terminal may simultaneously receive data transmitted from the first base station and the second base station.

The first base station and the second base station may have the same cell ID, and the first base station and the second base station may be set to different antenna ports.

When the terminal receives the SRS transmission request from the second base station after the step of indicating the reception, it may include the step of transmitting the SRS to the second base station.

A terminal receiving data from a plurality of base stations linked with a virtualization system which is another feature of the present invention for achieving the technical problem of the present invention,

A signal receiver configured to receive a broadcast signal from a first base station included in the plurality of base stations, to which a terminal is connected, and a second base station adjacent to the first base station; A reception sensitivity calculator configured to calculate a reception sensitivity of the broadcast signal received from the second base station; If the reception sensitivity of the broadcast signal received from the second base station calculated by the reception sensitivity calculation unit is greater than a preset threshold, event information including base station information and terminal information of the second base station is generated to generate the first information. An event generator / transmitter for transmitting to the base station; And a data receiver configured to receive data simultaneously transmitted from the first base station and the second base station.

The signal receiver may transmit an SRS signal to the second base station when the SRS signal is requested to be transmitted from the second base station.

The base station is linked with the virtualization system which is another feature of the present invention for achieving the technical problem of the present invention, and provides data to the terminal,

A signal broadcasting unit broadcasting a broadcast signal to the terminal at a preset time and receiving an event occurrence message generated from the terminal; An event occurrence information transmitter configured to transmit the event occurrence message received by the signal broadcaster to the virtualization system; A data transmission instruction receiving unit configured to receive control information including a cell ID, antenna port information, and a data transmission method from the virtualization system; An information changing unit for changing a cell ID and an antenna port based on the control information received by the data transmission instruction receiving unit; And a data transmitter for transmitting data to the terminal based on the data transmission method.

The base station includes an information provider for providing base station information and connected terminal information to the virtualization system; And an SRS transmitting / receiving unit requesting SRS transmission to the terminal upon receiving the information collection instruction message from the virtualization system, and transmitting the SRS received from the terminal to the virtualization system.

A virtualization system interworking with a plurality of base stations which is another feature of the present invention for achieving the technical problem of the present invention,

An event information receiver configured to receive an event occurrence message including terminal information, second base station information adjacent to the first base station, and first base station information from a first base station connected to a terminal among the plurality of base stations; An information collection indicating unit for instructing information collection to the second base station based on the event occurrence message; A cell reference signal calculator configured to calculate a cell reference signal value based on the received SRS when receiving the SRS received from the terminal from the second base station; And a cell ID, antenna port information, and data transmission method to be provided to the first base station and the second base station when the calculated cell reference signal value calculated by the cell reference signal calculator is greater than a preset threshold. And a data transmission control unit for generating and transmitting information.

The virtualization system includes a base station information receiving unit for receiving base station information from the plurality of base stations; And a base station information storage unit for storing and managing base station information received by the base station information receiver.

According to the present invention, since the data can be provided to the user in the MIMO scheme in LTE while using the existing system as it is, in a specific situation, the user can be provided with a fast communication service.

1 is an exemplary view showing a system environment for providing data according to an embodiment of the present invention.
2 is a structural diagram of a virtualization system according to an embodiment of the present invention.
3 is a structural diagram of a terminal according to an embodiment of the present invention.
4 is a structural diagram of a base station according to an embodiment of the present invention.
5 is a flowchart illustrating a data transmission method according to an embodiment of the present invention.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement 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 the drawings, parts irrelevant to the description are omitted in order to clearly describe the present invention, and like reference numerals designate like parts throughout the specification.

Throughout the specification, when a part is said to "include" a certain component, it means that it can further include other components, without excluding other components unless specifically stated otherwise.

In this specification, a terminal includes a mobile station (MS), a mobile terminal (MT), a subscriber station (SS), a portable subscriber station (PSS) An access terminal (AT), and the like, and may include all or some of functions of a mobile terminal, a subscriber station, a mobile subscriber station, a user equipment, and the like.

In this specification, a base station (BS) is an access point (AP), a radio access station (RAS), a node B, a base transceiver station (BTS) Mobile Multihop Relay) -BS, and may include all or some of the functions of an access point, a radio access station, a Node B, a base transceiver station, and an MMR-BS.

Hereinafter, a system and method for providing data to a user through a pseudo MIMO scheme in LTE according to an embodiment of the present invention will be described with reference to the drawings.

1 is an exemplary view showing a system environment for providing data according to an embodiment of the present invention.

As shown in FIG. 1, in the embodiment of the present invention, the data transmission system is implemented in a form in which the virtualization system 100 is connected to a plurality of base stations 200 and 200 ′. At this time, in the embodiment of the present invention will be described as an example of a cloud-type virtualization server as the virtualization system 100, but is not necessarily limited to this. Each of the base stations 200 and 200 ′ transmits data in a single input single output (SISO) scheme to the terminal 300 within a radius of the base station.

The structure of the virtualization system 100, the base station 200, 200 ′, and the terminal 300 to transmit data to the terminal 300 in the MIMO scheme in such a system environment will be described with reference to FIGS. 2 to 4. Shall be.

2 is a structural diagram of a virtualization system according to an embodiment of the present invention. 3 is a structural diagram of a terminal according to an embodiment of the present invention, and FIG. 4 is a structural diagram of a base station according to an embodiment of the present invention.

First, the structure of the virtualization system 100 will be described with reference to FIG. 2. The base station information receiving unit 110, the base station information storing unit 120, the event information receiving unit 130, the information collection indicating unit 140, and the cell reference signal are described. The calculator 150 and the data transmission controller 160 are included.

The base station information receiving unit 110 receives base station information from each of the plurality of base stations 200 and 200 ′ interoperating with the virtualization system 100. The base station information includes a base station identifier, base station location information, terminal information currently connected to the base station, and the like. For convenience of description, the base station 200 and 200 'to which the terminal 300 is currently connected are referred to as a first base station, adjacent to the first base station, and provided with the data to the terminal 300 in a MIMO manner. The base station to be referred to as a second base station.

The base station information storage unit 120 stores base station information and terminal information received by the base station information receiving unit 110. In this case, since the terminal information can be changed, it is not necessarily stored and managed together with the base station information.

The event information receiver 130 receives an event occurrence message transmitted from the first base station 200. The event occurrence message includes event information, terminal information for generating corresponding event information, and base station information for causing terminal 300 to generate event information. There may be a plurality of base stations for generating event information, and the second base station corresponds to one of them.

The information collection indicating unit 140 transmits the terminal information included in the event occurrence message to the second base station 200 ′ based on the second base station information included in the event occurrence message received by the event information receiver 130. Instructs to collect information on the terminal 300. Herein, the instruction to collect information means that the second base station 200 ′ instructs to receive a sounding reference signal (SRS) from the terminal, and the instruction to receive the SRS is limited to only the second base station 200 ′. Rather, it corresponds to all base stations other than the first base station 200 included in the event occurrence message.

The cell reference signal calculation unit 150 receives the SRS received from the terminal 300 from a plurality of base stations including the second base station 200 ′ instructed to receive the SRS by the information collection indicating unit 140, and then receives a cell. A reference signal value, that is, a channel quality indicator (CQI), a precoding matrix indicator (PMI), and a rank indicator (RI) are calculated. The second base station 200 ′ of the plurality of base stations is selected as a base station to transmit data to the terminal 300 based on the calculated cell reference signal value.

In this case, the method of selecting the second base station 200 ′ among the plurality of base stations includes a cell reference signal including CQI, PMI, and RI calculated by the cell reference signal calculator 150 receiving SRSs from the respective base stations. Although an example of selecting a base station indicating the largest cell reference signal value among the values is described as an example, the present invention is not necessarily limited thereto.

If the cell reference signal calculated by the cell reference signal calculator 150 is greater than a threshold value, the data transmission controller 160 may include the first base station 200 to which the selected second base station 200 ′ and the terminal 300 are currently connected. Control information is generated to instruct to change the base station cell ID to the same and change the antenna port. In addition, the first base station 200 and the second base station 200 are generated by generating a control message indicating how to transmit the data to be provided to the terminal 300 to the two base stations 200 and 200 'having the same base station cell IDs. Send it to '). That is, the two base stations 200 and 200 'control the data to be provided to the terminal 300 by using the MIMO method, and the data transmission method can be variously changed according to the system design. The example is not limited to any one method.

Next, referring to FIG. 3, a structure of a terminal 300 that receives data from a plurality of base stations by using a MIMO method and uses a communication service is described. Referring to FIG. 3, the terminal 300 includes a signal receiver 310 and a reception sensitivity calculator 320. , An event generator / transmitter 330 and a data receiver 340.

The signal receiver 310 receives an arbitrary broadcast signal broadcast from the base stations 200 and 200 '. In this case, various signals may be selected and used according to a system design. Here, the broadcast signal is generally received from the first base station 200 to which the terminal 300 is connected, but may also be received from a plurality of base stations adjacent to the first base station 200.

In addition, when receiving the SRS transmission request from the base station (200, 200 '), the signal receiving unit 310 also transmits the SRS to the base station (200, 200'). At this time, the base station (200, 200 ') requesting the SRS transmission corresponds to the second base station (200').

The reception sensitivity calculator 320 calculates a reception sensitivity for receiving a broadcast signal broadcast from the base stations 200 and 200 ′. At this time, there are a number of methods for calculating the reception sensitivity, it is not limited to any one method.

If the event generation / transmitter 330 receives a broadcast signal from base stations to which the terminal 300 is not directly connected, the event generating / transmitting unit 330 has a numerical value equal to or greater than a preset reception sensitivity level among a plurality of reception sensitivity calculated through the received broadcast signal. Check the base station information of the base stations corresponding to the received sensitivity. In addition, an event including information on the identified base stations is generated and an event occurrence message is transmitted to the first base station 200.

The data receiver 340 transmits data transmitted from the first base station 200 in the SISO method or from the first base station 200 and the second base station 200 ′ in the MIMO method by an instruction of the virtualization system 100. Receive data and provide it to the user.

Meanwhile, the structure of the base stations 200 and 200 ′ connected to the virtualization system 100 described with reference to FIG. 2 and capable of transmitting data to the terminal 300 in a MIMO scheme in particular case will be described with reference to FIG. 4. The base station 200, 200 ′ may include a signal broadcaster 210, an information provider 220, an event generation information transmitter 230, an SRS transmitter / receiver 240, a data transmission instruction receiver 250, and an information changer ( 260 and a data transmitter 270.

The signal broadcaster 210 broadcasts a broadcast signal at a preset cycle at a preset cycle. When event information indicating that an event for a broadcast signal has occurred is received from the terminal 300, the event information is transmitted to the event generation information transmitter 230. In this case, the event information includes terminal information and base station information that caused the event.

The information provider 220 transmits base station information to the virtualization system 100. In this case, when the terminal 300 is connected, base station information including terminal information is provided.

The event occurrence information transmitter 230 transmits the event occurrence information that the signal broadcaster 210 receives from the terminal 300 to the virtualization system 100. In this case, the event occurrence information includes terminal information, second base station information for generating an event, and first base station information for raising event generation information.

When the SRS transmitting / receiving unit 240 receives the information collection instruction message including the terminal information of a certain terminal from the virtualization system 100, the SRS transmitting / receiving unit 240 requests the transmission of the SRS signal to the corresponding terminal using the terminal information. When the SRS is received from the terminal 300, the SRS is transferred to the virtualization system 100.

The data transmission instruction receiving unit 250 receives data transmission control information transmitted from the data transmission control unit 160 of the virtualization system 100. Here, the data transmission control information includes information such as cell ID and antenna port information to be changed by the base stations that will provide data to the terminal 300 in the MIMO method, and the order in which data should be transmitted.

The information changing unit 260 changes the cell ID and antenna port information based on the data transmission control information received by the data transmission instruction receiving unit 250. The cell ID is equally allocated to the plurality of base stations, and controlled to change only the antenna port information differently.

When the information changer 260 changes the cell ID and the antenna port, the data transmitter 270 provides data to the terminal 300 based on the data transmission order information included in the data transmission control information.

A method of providing data to the terminal 300 through the virtualization system 100, the terminal 300, and the base stations 200 and 200 ′ described with reference to FIGS. 2 to 4 by the MIMO method will be described with reference to FIG. 5. Shall be.

5 is a flowchart illustrating a data transmission method according to an embodiment of the present invention.

As shown in FIG. 5, the terminal 300 receives data from the first base station 200 in the SISO method (S100), and according to a preset period, the first base station 200 and the second base station 200 ′. It is assumed that simultaneously receiving a broadcast signal broadcasted by) (S110, S115). Then, the reception sensitivity calculator 320 of the terminal 300 checks whether the strength of the broadcast signal broadcast by the second base station 200 ′ is greater than a preset reference value (S120).

If the broadcast signal broadcast from the second base station 200 ′ is lower than the reference value, data is received from the first base station 200 in the SISO method as before. However, when the strength of the received broadcast signal is higher than the reference value, the event generating / transmitting unit 330 of the terminal 300 includes the base station information for the second base station 200 ′ indicating that an event has occurred. A message is generated and transmitted to the first base station 200 (S130 and S140). In this case, the event generation message generated in step S130 includes terminal information and second base station information, and when the first base station 200 transmits to the virtualization system 100 in step S140, the first base station information is also included. send.

When the signal broadcast unit 210 of the first base station 200 receives the event occurrence message from the terminal 300, the event occurrence information transmitter 230 transmits the corresponding event occurrence message to the virtualization system 100 (S150). . When the event information receiving unit 130 of the virtualization system 100 receives an event occurrence message from the first base station 200, the information collection indicating unit 140 includes a second base station including terminal information included in the event occurrence message. 200 ') and transmits an SRS request message informing that the SRS is to be received (S160).

Upon receiving the SRS request message from the virtualization system 100, the second base station 200 ′ requests to transmit the SRS to the corresponding terminal (S170), and when receiving the SRS transmitted from the terminal, transmits the SRS to the virtualization system 100. (S180, S190). The cell reference signal calculator 150 of the virtualization system 100 calculates a cell reference signal value, that is, CQI, PMI, and RI based on the SRS received from step S190 (S200). The data transmission control unit 160 determines whether the cell reference signal value calculated by the cell reference signal calculation unit 150 exceeds a threshold value (S210). Continue to provide the data being provided to 300).

In this case, when the base station requesting the SRS to the terminal other than the second base station 200 ′, the CQI, PMI and RI, which are cell reference signal values, are respectively calculated based on the SRSs received from the plurality of base stations, and the calculated cell reference signals are calculated. The base station which has transmitted the SRS indicating the largest cell reference signal value among the values is selected.

If the value calculated in step S200 exceeds the threshold, the data transmission control unit 160 generates control information to be transmitted to the first base station 200 and the second base station 200 '(S220). In this case, the control information includes cell ID information to be changed in the first base station 200 and the second base station 200 'and antenna port information to be used for data transmission in the first base station 200 and the second base station 200'. It includes. In addition, it also includes information indicating how to transmit each of the two base stations to transmit data to the terminal 300.

The data transmission control unit 160 transmits the control information generated in step S220 to the first base station 200 and the second base station 200 ′ (S230 and S235), and the first base station 200 and the second base station ( The information changing unit 260 of 200 'changes the cell ID and the antenna port based on the information included in the control information, respectively (S240 and S245). When the information change is completed, the data is transmitted to the terminal 300 based on the data transmission method included in the control information (S250 and S255). In this case, since the terminal 300 receives data from the first base station 200 and the second base station 200 ′ with different antenna ports at the same cell ID, the terminal 300 receives two data at a time by using a MIMO scheme. Will be received.

For example, the cell IDs of the two base stations 200 and 200 'are changed to' abc ', and the antenna port of the first base station 200 is 1 and the antenna port of the second base station 200' is 2 times. If the instruction to change to the, since the terminal 300 determines that the data is transmitted from each other in the antenna of the base station 'abc', that is, two antennas set to the first and second ports, respectively, the terminal in the base station in MIMO method It will be recognized as receiving data.

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 (13)

Receiving, by a terminal, a broadcast signal broadcast from a first base station to which the terminal is connected and a second base station adjacent to the first base station;
Generating, by the terminal, an event occurrence message if the broadcast signal broadcast from the second base station is greater than a preset threshold;
Transmitting, by the first base station, an event occurrence message generated by the terminal to the virtualization system;
Instructing, by the virtualization system interworking with the first base station and the second base station, receiving a SRS (Sounding Reference Signal) to the second base station from the first base station based on the event occurrence message received from the first base station;
Calculating, by the virtualization system, a cell reference signal value when the second base station delivers the SRS received from the terminal to the virtualization system; And
The virtualization system transmitting a control information message to the first base station and the second base station, and instructing data transmission to the terminal through the first base station and the second base station;
Data transmission method comprising a. The method of claim 1,
Computing the cell reference signal value,
Determining whether the calculated cell reference signal value exceeds a preset threshold value; And
Generating control information including a cell ID, antenna port information, and a data transmission method when the threshold value is exceeded
Data transmission method comprising a. The method of claim 2,
The cell reference signal value includes a channel quality indicator (CQI), a precoding matrix indicator (PMI) and a rank indicator (RI). The method of claim 2,
After the step of instructing the data transmission,
Changing the information by the first base station and the second base station based on the cell ID and antenna port information;
Transmitting data by the first base station and the second base station to the terminal based on the data transmission method; And
The terminal simultaneously receiving data transmitted from the first base station and the second base station
Data transmission method comprising a. 5. The method of claim 4,
And the first base station and the second base station have the same cell ID, and the first base station and the second base station are set to different antenna ports. The method of claim 1,
Transmitting the SRS to the second base station when the terminal receives the SRS transmission request from the second base station after indicating the reception;
Data transmission method comprising a. The method of claim 1,
The event occurrence message transmitted to the virtualization system includes terminal information, base station information of the second base station and base station information of the first base station. In the terminal receiving data from a plurality of base stations linked to a virtualization system,
A signal receiver configured to receive a broadcast signal from a first base station included in the plurality of base stations, to which a terminal is connected, and a second base station adjacent to the first base station;
A reception sensitivity calculator configured to calculate a reception sensitivity of the broadcast signal received from the second base station;
If the reception sensitivity of the broadcast signal received from the second base station calculated by the reception sensitivity calculation unit is greater than a preset threshold, event information including base station information and terminal information of the second base station is generated to generate the first information. An event generator / transmitter for transmitting to the base station; And
Data receiving unit for receiving data transmitted simultaneously from the first base station and the second base station
. 9. The method of claim 8,
Wherein the signal receiver comprises:
When receiving the SRS signal transmission request from the second base station, the terminal for transmitting the SRS signal to the second base station. In the base station interworking with the virtualization system, providing data to the terminal,
A signal broadcasting unit broadcasting a broadcast signal to the terminal at a preset time and receiving an event occurrence message generated from the terminal;
An event occurrence information transmitter configured to transmit the event occurrence message received by the signal broadcaster to the virtualization system;
A data transmission instruction receiving unit configured to receive control information including a cell ID, antenna port information, and a data transmission method from the virtualization system;
An information changing unit for changing a cell ID and an antenna port based on control information received by the data transmission instruction receiving unit; And
Data transmission unit for transmitting data to the terminal based on the data transmission method
/ RTI > The method of claim 10,
An information provider for providing base station information and connected terminal information to the virtualization system; And
SRS transmission / reception unit for requesting the SRS transmission to the terminal when receiving the information collection instruction message from the virtualization system, and transmitting the SRS received from the terminal to the virtualization system
/ RTI > In a virtualization system that works with a plurality of base stations,
An event information receiver configured to receive an event occurrence message including terminal information, second base station information adjacent to the first base station, and first base station information from a first base station connected to a terminal among the plurality of base stations;
An information collection indicating unit for instructing information collection to the second base station based on the event occurrence message;
A cell reference signal calculator configured to calculate a cell reference signal value based on the received SRS when receiving the SRS received from the terminal from the second base station; And
Control information including a cell ID, antenna port information, and a data transmission method to be provided to the first base station and the second base station when the calculated cell reference signal value calculated by the cell reference signal calculator is greater than a preset threshold value. Data transmission control unit for generating and transmitting
Virtualization system comprising a. The method of claim 12,
A base station information receiver configured to receive base station information from the plurality of base stations; And
Base station information storage unit for storing and managing the base station information received by the base station information receiver
Virtualization system comprising a.
KR1020110106058A 2011-10-17 2011-10-17 System and method for data transmission in virtualization structure KR20130041660A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020110106058A KR20130041660A (en) 2011-10-17 2011-10-17 System and method for data transmission in virtualization structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020110106058A KR20130041660A (en) 2011-10-17 2011-10-17 System and method for data transmission in virtualization structure

Publications (1)

Publication Number Publication Date
KR20130041660A true KR20130041660A (en) 2013-04-25

Family

ID=48440764

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020110106058A KR20130041660A (en) 2011-10-17 2011-10-17 System and method for data transmission in virtualization structure

Country Status (1)

Country Link
KR (1) KR20130041660A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022026344A1 (en) * 2020-07-29 2022-02-03 Platform Science, Inc. Method and system for dynamic wireless connection management
US11438938B1 (en) 2016-06-19 2022-09-06 Platform Science, Inc. System and method to generate position and state-based electronic signaling from a vehicle
US11528759B1 (en) 2016-06-19 2022-12-13 Platform Science, Inc. Method and system for vehicle inspection
US11641677B2 (en) 2016-06-19 2023-05-02 Platform Science, Inc. Method and system for generating fueling instructions for a vehicle
US11641678B2 (en) 2016-06-19 2023-05-02 Platform Science, Inc. Secure wireless networks for vehicle assigning authority
US11696349B2 (en) 2016-06-19 2023-07-04 Platform Science, Inc. Micro-navigation for a vehicle
US11706822B2 (en) 2016-06-19 2023-07-18 Platform Science, Inc. Remote profile manager for a vehicle
US11769407B1 (en) 2016-06-19 2023-09-26 Platform Science, Inc. System and method to generate position and state-based electronic signaling from a vehicle

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11438938B1 (en) 2016-06-19 2022-09-06 Platform Science, Inc. System and method to generate position and state-based electronic signaling from a vehicle
US11528759B1 (en) 2016-06-19 2022-12-13 Platform Science, Inc. Method and system for vehicle inspection
US11641677B2 (en) 2016-06-19 2023-05-02 Platform Science, Inc. Method and system for generating fueling instructions for a vehicle
US11641678B2 (en) 2016-06-19 2023-05-02 Platform Science, Inc. Secure wireless networks for vehicle assigning authority
US11696349B2 (en) 2016-06-19 2023-07-04 Platform Science, Inc. Micro-navigation for a vehicle
US11706822B2 (en) 2016-06-19 2023-07-18 Platform Science, Inc. Remote profile manager for a vehicle
US11769407B1 (en) 2016-06-19 2023-09-26 Platform Science, Inc. System and method to generate position and state-based electronic signaling from a vehicle
WO2022026344A1 (en) * 2020-07-29 2022-02-03 Platform Science, Inc. Method and system for dynamic wireless connection management

Similar Documents

Publication Publication Date Title
KR20130041660A (en) System and method for data transmission in virtualization structure
US11374716B2 (en) Communication method and communication apparatus
KR20220042187A (en) Transmission method and device, and computer-readable storage medium
US9960826B2 (en) Method and apparatus for controlling RI report
KR102542244B1 (en) Method, apparatus and storage medium for reporting beam failure of secondary serving cell
US11962534B2 (en) Communication method and communications apparatus
US20190089420A1 (en) Method, system and apparatus of beam selection
US20150230224A1 (en) System and method for virtual multi-point transceivers
CN109478924A (en) Reference signal tracking in wireless communication system
US10574331B2 (en) Antenna co-location and receiver assumptions
EP2774277A1 (en) Signaling for configuration of downlink coordinated multipoint communications
RU2015154889A (en) SUPPRESSION OF SIGNAL INTERFERENCE IN A WIRELESS NETWORK
RU2013158305A (en) COMMUNICATION CONTROL DEVICE, COMMUNICATION CONTROL METHOD AND PROGRAM
KR20150041024A (en) Method and apparatus for controlling csi report
CA2797573A1 (en) Method for reporting a channel quality indicator by a relay node in a wireless communication system, and apparatus for same
RU2012110182A (en) ADMINISTRATION SERVER, DATA TRANSMISSION SYSTEM, DATA TRANSFER TERMINAL AND RADIO-RELAY TRANSMISSION DEVICE
CN113271671B (en) Beam management method and related device
JP6938546B2 (en) Reference signal transmission method, network equipment and terminal equipment
KR101685032B1 (en) Comp transmission feedback method, device and system
TW201543935A (en) Base station, device to device user equipment, transmission method, report method and resource adjustment method for wireless communication system
US20170105154A1 (en) Quick Transmission Point Handover Method, Handover Device, Service Base Station And Terminal
KR20130037615A (en) Method and device of generating feedback in a communication system
EP3123653B1 (en) Method, apparatus, and system for comp-based resource allocation
TWI641274B (en) Communication method, network device and terminal device
CN109716686B (en) Method and apparatus for providing channel state information state by a transceiver

Legal Events

Date Code Title Description
WITN Withdrawal due to no request for examination