KR20170024301A - Method and apparatus for supporting of multiple repeater mode - Google Patents
Method and apparatus for supporting of multiple repeater mode Download PDFInfo
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- KR20170024301A KR20170024301A KR1020150119383A KR20150119383A KR20170024301A KR 20170024301 A KR20170024301 A KR 20170024301A KR 1020150119383 A KR1020150119383 A KR 1020150119383A KR 20150119383 A KR20150119383 A KR 20150119383A KR 20170024301 A KR20170024301 A KR 20170024301A
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- cell
- repeater
- signal
- radius
- extended
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/155—Ground-based stations
- H04B7/15507—Relay station based processing for cell extension or control of coverage area
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/155—Ground-based stations
- H04B7/15528—Control of operation parameters of a relay station to exploit the physical medium
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/155—Ground-based stations
- H04B7/15557—Selecting relay station operation mode, e.g. between amplify and forward mode, decode and forward mode or FDD - and TDD mode
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- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The present invention relates to a multiple repeater mode support method and apparatus capable of selectively supporting a repeater mode operating an extended cell, which is an area covered by a repeater, on the same condition as a basic cell, or a sector mode operating on a different condition from a basic cell . The multiple repeater mode supporting apparatus of the present invention is a repeater mode supporting apparatus that operates an extended cell, which is an area covered by a repeater, in a repeater mode or an extended cell that operates under the same condition as a basic cell, Receiving a signal of a same signal as that of a transmission / reception signal serviced by a base cell when receiving a repeater mode, and when receiving a sector mode, performing transmission / reception of a signal different from a transmission / And performs signal transmission / reception signal processing.
Description
The present invention relates to a mobile communication field, and more particularly, to a repeater mode in which an extended cell, which is an area covered by a repeater, is operated on the same condition as a basic cell, or a multiple repeater capable of selectively supporting a sector mode operating in a different condition from a basic cell Mode support method and apparatus.
Recently, due to the rapid development of communication, computer network and semiconductor technology, not only various services using wireless communication networks have been provided, but the demand of users has been increasing day by day, and the global wireless Internet service market has been exploding Trend. Accordingly, a service provided by a mobile communication system using a wireless communication network is being developed not only as a voice service, but also as a multimedia communication service for transmitting various data. Recently, with the increase of smart phones and the demand for data traffic, mobile operators are investing in equipment and technology considering system load or impact to accommodate increased data traffic in various ways.
The function of extending the service area in the wireless communication service is a main function required by the base station. In order to expand the service area in various terrains, base station manufacturers provide various types of base station products to telecommunication service companies. Various types of base stations include a large base station, a medium base station, a small base station, and a small base station. When a user equipment (UE) moves from one base station to another, a handover (H / O) is triggered. In order to reduce the handover, a repeater is used that enlarges the service area within the same cell.
Most repeaters are connected to the output terminal of the base station and use RF (Radio Frequency) signals of the base station. The base station output is coupled to the antenna to provide communication services for the base cell. The RF signal of the base station is connected to the repeater system through the D / C (Directional Coupler) at the output terminal of the base station. A donor and a relay RU (Radio Unit) constituting a repeater system typically perform a signal processing process for each RAT (Radio Access Technology) signal and FA (Frequency Assignment) Service. The signal processing includes analog signal processing and optical transmission signal processing.
In the case of a single RAT, the repeater can receive the RF signal at the output terminal of the base station and provide a communication service to the extended cell. In the case of multiple RATs, the base station may provide services such as LTE (Long Term Evolution) and WCDMA (Wideband Code Division Multiple Access), and the base station may output a plurality of signals adjacent in frequency. If the repeater uses the output signal of the base station having the adjacent frequency, many problems may occur.
1 is an exemplary diagram illustrating a cell service radius in a multiple RAT environment.
FIG. 1 shows cell radiuses for a basic cell and an extended cell in a multiple RAT environment providing LTE (omni alpha), WCDMA (omni alpha, F1, F2) services. The WCDMA service cell radius R_Wm or the LTE service cell radius R_Lm may be adjusted in the basic cell by adjusting setting parameters of a DU (Digital Unit) (not shown) and a RU (Radio Unit) . If the LTE service cell radius R_Lm in the base cell is set to be smaller than the WCDMA service cell radius R_Wm, the service cell radius of the extended cell served through the repeater is set to be similar to that of the basic cell. That is, in the extended cell, the LTE service cell radius R_Le is set to be smaller than the WCDMA service cell radius R_We.
However, since the repeater system does not perform signal processing on each RAT signal, there is no variable that can control the signal characteristics of each RAT signal. There is no way to increase only the LTE service cell radius in the extended cell because the service cell radius of the basic cell is changed.
Even if the user wants to increase the capacity of the user in the extended cell due to other requirements, current repeater system and base station type can not satisfy various cell radius and user capacity adjustment requirements.
The present invention provides a multiple repeater mode support method and apparatus capable of selectively supporting a repeater mode operating an extended cell, which is an area covered by a repeater, on the same condition as a basic cell, or a sector mode operating on a different condition from a basic cell .
A method of supporting multiple repeater modes according to the present invention comprises the steps of: a) a repeater mode for operating an extended cell, which is an area covered by a repeater, on the same condition as a basic cell, Receiving one of the sector modes operating in different conditions; b) receiving, when receiving the repeater mode, a transmission / reception signal process of the same signal as the transmission / reception signal served in the base cell, and transmitting / receiving different transmission / reception signals to / And performing signal processing.
Also, according to the present invention, there is provided a repeater mode supporting apparatus comprising: a repeater mode for operating an extended cell, which is an area covered by a repeater, on the same condition as a basic cell, Receiving a signal of a same signal as a transmission / reception signal serviced in the base cell when receiving the repeater mode, and when receiving the sector mode, And a control unit for performing transmission / reception signal processing of different transmission / reception signals with the serviceable transmission / reception signals.
According to the present invention, the extended cell can be selectively operated on the same condition as the basic cell or differently from the basic cell according to the mobile communication service status of the basic cell and the extended cell. In addition, the service cell radius in the extended cell can be adjusted regardless of the cell service radius setting of the basic cell.
BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is an illustration of cell service radius in a multiple RAT environment.
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a repeater system.
3 is a diagram illustrating a configuration of a multiple repeater mode supporting apparatus according to an exemplary embodiment of the present invention.
4 is a diagram illustrating a configuration of a transmitter for a multiple RAT extended cell according to an embodiment of the present invention.
FIG. 5 is a diagram illustrating a configuration of a receiver for an extended cell of multiple RATs according to an embodiment of the present invention; FIG.
FIG. 6 is an exemplary diagram illustrating a cell service area change according to an embodiment of the present invention; FIG.
7 is a flowchart illustrating a procedure of a method of supporting multiple repeater modes according to an embodiment of the present invention.
Hereinafter, some embodiments of the present invention will be described in detail with reference to exemplary drawings. It should be noted that, in adding reference numerals to the constituent elements of the drawings, the same constituent elements are denoted by the same reference numerals whenever possible, even if they are shown in different drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.
The wireless communication system in the present invention is widely deployed to provide various communication services such as voice, packet data and the like. The wireless communication system includes a user equipment (UE) and a base station (BS, NodeB or eNB). In one embodiment, the UE is a generic concept that refers to a terminal in a wireless communication. The UE is a user equipment (UE) in Wideband Code Division Multiple Access (WCDMA), Long Term Evolution (LTE), High Speed Packet Access (HSPA) (MS), a user terminal (UT), a subscriber station (SS), and a wireless device in a Global System for Mobile Communications (GSM).
A base station or a cell generally refers to a station that communicates with a user terminal and includes a Node B, an evolved NodeB, a sector, a site, a BTS (Base Transceiver System) May be referred to as other terms such as an access point, a relay node, a remote radio head (RRH), a radio unit (RU), and a small cell. That is, the base station or the cell should be interpreted in a generic sense to indicate some areas or functions covered by BSC (Base Station Controller) in CDMA, NodeB in WCDMA, eNB in LTE or sector (site) A megacell, a macro cell, a micro cell, a pico cell, a femto cell and a relay node, an RRH, an RU, a small cell communication range, etc. It is meant to cover all the various coverage areas.
Since the various cells listed above exist in the base station controlling each cell, the base station can be interpreted into two meanings. i) a device providing a megacell, a macrocell, a microcell, a picocell, a femtocell, or a small cell in relation to a wireless region, or ii) the wireless region itself. i indicate to the base station all devices that are controlled by the same entity or that interact to configure the wireless region as a collaboration. An eNB, an RRH, an antenna, an RU, a low power node (LPN), a point, a transmission / reception point, a transmission point, a reception point, and the like are examples of a base station according to a configuration method of a radio area. ii) may indicate to the base station the wireless region itself that is to receive or transmit signals from the perspective of the user terminal or from a neighboring base station. Therefore, a base station is collectively referred to as a megacell, macrocell, microcell, picocell, femtocell, small cell, RRH, antenna, RU, LPN, point, eNB, transmission / reception point, transmission point and reception point.
The user terminal and the base station are used in a generic sense as the two transmitting and receiving subjects used to implement the technical or technical idea described in the present invention and are not limited by a specific term or word. The uplink (uplink, UL, or uplink) refers to a method of transmitting / receiving data to / from a base station by a user terminal, and the downlink (DL or downlink) .
In one embodiment, a cell includes a component carrier having coverage of a signal transmitted from a transmission / reception point or a signal transmitted from a transmission point or a transmission / reception point, and a transmission / reception point itself It can mean.
Hereinafter, the downlink refers to a communication or communication path from a multiple transmission / reception point to a user terminal, and an uplink refers to a communication or communication path from a user terminal to a multiple transmission / reception point. In the downlink, the transmitter may be part of a multipoint transmission / reception point, and the receiver may be part of a user terminal. In the uplink, the transmitter may be part of the user terminal, and the receiver may be a part of multiple transmission / reception points.
FIG. 2 is a diagram illustrating a configuration of a repeater system according to an embodiment of the present invention. Referring to FIG.
2, the
In the case of a single RAT, the
3 is a diagram illustrating an exemplary configuration of a multiple repeater mode supporting apparatus according to an exemplary embodiment of the present invention.
3, the multiple repeater mode support device RU may include a
The
The
In addition, the
The transmission /
FIG. 4 is a diagram illustrating a configuration of a
4, the
5 is a diagram illustrating a configuration of a receiving
As shown in FIG. 5, the multiple RAT RF signal received through the
Important matters to be considered in setting up multiple RAT service areas may be the time delay processing setting and the gain / weight setting for each RAT signal. The time delay processing setting and the gain / weight setting should be set according to the cell area planning. The range of the communication service area can be adjusted through the time delay blocks 517-1 and 517-2 and the weight adjustment blocks 518-1 and 518-2 included in the basic cell and the extended cell.
6 is an exemplary diagram illustrating a cell service area change according to an embodiment of the present invention.
As shown in FIG. 6, the first extended cell (FEC) is set to WCDMA (alp, F1, F2) and LTE alpha sectors in the same manner as the service area setting of the basic cell (BS) The LTE service area R_Le can be extended by adjusting the time delay value and the weight value of the LTE signal processing path included in the wireless unit (not shown) of the first extended cell (FEC), and the WCDMA service area R_We, . ≪ / RTI > If the LTE user capacity is increased in the second extended cell (SEC), and only one FA is allocated in the WCDMA, if the manager sets the sector mode for the second extended cell (SEC), the wireless unit The selection block allocates LTE beta sector resources differently from the configuration of the basic cell (BS), allocates only one FA (1F) in the WCDMA, increases the capacity of the user of the second extended cell (SEC) have.
7 is a flowchart illustrating a procedure of a multi-repeater mode support method according to an exemplary embodiment of the present invention.
As shown in FIG. 7, the multiple repeater mode support unit RU can receive cell operation information from the outside, that is, the digital unit DU (S710), and based on the received cell operation information, It is possible to select whether to operate the extension cell for the extension of the wireless communication service area in the repeater mode or the sector mode (S720). When the extended cell is operated in the repeater mode, the multi-repeater mode support unit RU may use the cell operation information to provide radio communication services to the basic cell and the extended cell, The
Although the method has been described through particular embodiments, the method may also be implemented as computer readable code on a computer readable recording medium. A computer-readable recording medium includes all kinds of recording apparatuses in which data that can be read by a computer system is stored. Examples of the computer-readable recording medium include a ROM, a RAM, a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like, and may be implemented in the form of a carrier wave (for example, transmission over the Internet) . In addition, the computer-readable recording medium may be distributed over network-connected computer systems so that computer readable codes can be stored and executed in a distributed manner. In addition, functional programs, codes, and code segments for implementing the above embodiments can be easily deduced by programmers of the present invention.
Although the present invention has been described in connection with certain embodiments thereof, it should be understood that various changes and modifications may be made therein without departing from the spirit and scope of the invention as will be apparent to those skilled in the art to which the invention pertains. something to do. It is also contemplated that such variations and modifications are within the scope of the claims appended hereto.
210: base station 220: repeater
230: antenna 240: directional coupler
222: Donor 224: Wireless unit for repeater
RU: Multiple repeater mode support device 310:
320: Control section 330: Transmitting /
332: transmission unit 334:
410:
413, 414:
417: Signal combining block 418: Analog and RF processing block
419: Antenna 420: Digital unit
FTE, STE: Wireless unit for cell area extension
510: Wireless unit 511: Antenna
512: analog filter 513: low noise amplifier
514: Mixer 515: A / D converter
516-1, 516-2: digital filtering blocks 517-1, 517-2: time delay block
518-1,518-2: weight adjustment block 519-1, 519-2: selection block
FRE, SRE: Extended cell LP, WP: RAT-specific signal processing block
BS: Basic cell FEC: First extended cell
SEC: Second extended cell
Claims (14)
a) a repeater mode for operating an extended cell, which is an area covered by a repeater, on the same condition as a basic cell, which is a region covered by a base station connected to the repeater, or a sector mode for operating the extended cell on different conditions from the basic cell Receiving,
b) receiving, when receiving the repeater mode, a transmission / reception signal process of the same signal as the transmission / reception signal served in the base cell, and transmitting / receiving different transmission / reception signals to / Performing signal processing
Gt; a < / RTI > multiple repeater mode support method.
The step b)
Wherein the repeater performs transmission and reception signal processing on signals of sectors different from the basic cell or performs transmission and reception signal processing on signals of different frequencies from the basic cell when the sector mode is received , A method for supporting multiple repeater modes.
Applying a cell radius setting value for the basic cell to the extended cell or increasing or decreasing a cell service radius in the extended cell according to a cell radius setting value for the extended cell
Further comprising the steps of:
The cell radius setting value of the extended cell is set differently for each RAT (Radio Access Technology) signal,
The RAT signal includes a Wideband Code Division Multiple Access (WCDMA) signal and a Long Term Evolution (LTE) signal,
Wherein the cell service radius of the LTE signal is increased or decreased relative to a cell service radius of the base cell.
The cell radius setting value of the extended cell is set differently according to FA (Frequency Assignment)
Wherein the FA includes first and second frequencies and wherein the cell service radius for at least one of the first and second frequencies is increased or decreased relative to a cell service radius of the base cell, Way.
The cell radius set value of the extended cell is set differently for each LTE (Long Term Evolution) sector,
Wherein the LTE sector includes alpha, beta, gamma sectors, and the cell service radius for one or more of the alpha, beta, gamma sectors is greater than a cell service radius of the base cell Wherein the plurality of repeater modes are increased or decreased.
The cell radius setting value is a value
A set value for time delay processing, or a set value for gain and weight adjustment.
One of a repeater mode for operating an extended cell, which is an area covered by a repeater, on the same condition as a basic cell, which is a region covered by a base station connected to the repeater, or a sector mode for operating the extended cell on different conditions from the basic cell, Reception signal processing of the same signal as the transmission / reception signal serviced in the base cell when the repeater mode is received, and transmitting / receiving signals of different transmission / reception signals to / A control unit
And a plurality of repeater mode support devices.
Wherein,
Receiving signal processing for signals of sectors different from the basic cell when receiving the sector mode or performing transmission and reception signal processing on signals of different frequencies from the basic cell.
Wherein,
Wherein the cell radius setting value for the base cell is also applied to the extended cell or increases or decreases the cell service radius in the extended cell according to the cell radius setting value for the extended cell.
Further comprising a storage unit for storing a cell radius setting value of the basic cell and the extended cell,
Wherein the control unit sets the cell radius setting value of the extended cell differently for each RAT (Radio Access Technology) signal,
Wherein the RAT signal includes a Wideband Code Division Multiple Access (WCDMA) signal and a Long Term Evolution (LTE) signal, and the cell service radius of the LTE signal is increased or decreased in comparison with a cell service radius of the base cell. Multiple repeater mode supported devices.
Wherein,
The cell radius setting value of the extended cell is set differently according to FA (Frequency Assignment)
Wherein the FA includes first and second frequencies and wherein the cell service radius for at least one of the first and second frequencies is increased or decreased relative to a cell service radius of the base cell, Device.
Wherein,
The cell radius setting value of the extended cell is set differently for each LTE (Long Term Evolution) sector,
Wherein the LTE sector includes alpha, beta, gamma sectors, and the cell service radius for one or more of the alpha, beta, gamma sectors is greater than a cell service radius of the base cell Wherein the plurality of repeater mode supporting apparatuses are increased or decreased.
The cell radius setting value is a value
A set value for time delay processing or a gain value and a setting value for weight adjustment.
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KR1020150119383A KR20170024301A (en) | 2015-08-25 | 2015-08-25 | Method and apparatus for supporting of multiple repeater mode |
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Citations (1)
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KR20040050413A (en) | 2002-12-10 | 2004-06-16 | 삼성전자주식회사 | Method for intersystem cell change in mobile telecommunication system |
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KR20040050413A (en) | 2002-12-10 | 2004-06-16 | 삼성전자주식회사 | Method for intersystem cell change in mobile telecommunication system |
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