KR20180108397A - Method, apparatus, and system for ue for measurement configuration of different reference signals and cell measurement report mechanism - Google Patents

Abstract

The present disclosure relates to a communication technique for fusing IoT technology with a 5G communication system for supporting a higher data transmission rate after a 4G system and a system thereof. The present disclosure can be applied to an intelligent service (for example, smart home, smart building, smart city, smart car or connected car, health care, digital education, retails, security and safety-related service, etc.) based on 5G communication technology and IoT-related technology. The present invention relates to a next generation wireless communication system, and more particularly, to a method for allocating and transmitting different reference signals to a terminal in a beamforming-based system including one or more base stations and one or more terminals, and a system, method, and apparatus for performing cell measurement and mobility management operations using the transmitted different reference signals. A control signal processing method in a wireless communication system includes the steps of: receiving a first control signal; processing the received first control signal; and transmitting a second control signal to the base station.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates generally to a method and apparatus for reporting a cell measurement value using a different reference signal, MEASUREMENT REPORT MECHANISM}

The present invention relates to a next generation wireless communication system, and more particularly, to a method of allocating and transmitting different reference signals to a terminal in a beamforming based system including one or more base stations and one or more terminals, And more particularly, to a system, method, and apparatus for performing cell measurement and mobility management operations using a plurality of cells.

Efforts are underway to develop an improved 5G or pre-5G communication system to meet the growing demand for wireless data traffic after commercialization of the 4G communication system. For this reason, a 5G communication system or a pre-5G communication system is called a system after a 4G network (Beyond 4G network) communication system or after a LTE system (Post LTE). To achieve a high data rate, 5G communication systems are being considered for implementation in very high frequency (mmWave) bands (e.g., 60 gigahertz (60GHz) bands). In order to mitigate the path loss of the radio wave in the very high frequency band and to increase the propagation distance of the radio wave, in the 5G communication system, beamforming, massive MIMO, full-dimension MIMO (FD-MIMO ), Array antennas, analog beam-forming, and large scale antenna technologies are being discussed. In order to improve the network of the system, the 5G communication system has developed an advanced small cell, an advanced small cell, a cloud radio access network (cloud RAN), an ultra-dense network, (D2D), a wireless backhaul, a moving network, cooperative communication, Coordinated Multi-Points (CoMP), and interference cancellation Have been developed. In addition, in the 5G system, the Advanced Coding Modulation (ACM) scheme, Hybrid FSK and QAM Modulation (FQAM) and Sliding Window Superposition Coding (SWSC), the advanced connection technology, Filter Bank Multi Carrier (FBMC) (non-orthogonal multiple access), and SCMA (sparse code multiple access).

On the other hand, the Internet is evolving into an Internet of Things (IoT) network in which information is exchanged between distributed components such as objects in a human-centered connection network where humans generate and consume information. IoE (Internet of Everything) technology, which combines IoT technology with big data processing technology through connection with cloud servers, is also emerging. In order to implement IoT, technology elements such as sensing technology, wired / wireless communication, network infrastructure, service interface technology and security technology are required. In recent years, sensor network, machine to machine , M2M), and MTC (Machine Type Communication). In the IoT environment, an intelligent IT (Internet Technology) service can be provided that collects and analyzes data generated from connected objects to create new value in human life. IoT is a field of smart home, smart building, smart city, smart car or connected car, smart grid, health care, smart home appliance, and advanced medical service through fusion of existing information technology . ≪ / RTI >

Accordingly, various attempts have been made to apply the 5G communication system to the IoT network. For example, technologies such as a sensor network, a machine to machine (M2M), and a machine type communication (MTC) are implemented by techniques such as beamforming, MIMO, and array antennas It is. The application of the cloud RAN as the big data processing technology described above is an example of the convergence of 5G technology and IoT technology.

To achieve the high data rates considered in this patent, 5G communication systems are being considered for implementation in very high frequency (mmWave) bands (such as 60 gigahertz (60GHz) bands). In order to mitigate the path loss of the radio wave in the very high frequency band and to increase the propagation distance of the radio wave, in the 5G communication system, beamforming, massive MIMO, full-dimension MIMO (FD-MIMO ), Array antennas, analog beam-forming, and large scale antenna technologies are being discussed.

In order to improve the network of the system, the 5G communication system has developed an advanced small cell, an advanced small cell, a cloud radio access network (cloud RAN), an ultra-dense network, (D2D), a wireless backhaul, a moving network, cooperative communication, Coordinated Multi-Points (CoMP), and interference cancellation Have been developed.

In addition, in the 5G system, the Advanced Coding Modulation (ACM) scheme, Hybrid FSK and QAM Modulation (FQAM) and Sliding Window Superposition Coding (SWSC), the advanced connection technology, Filter Bank Multi Carrier (FBMC) (non-orthogonal multiple access), and SCMA (sparse code multiple access).

In a communication system, a terminal needs an initial cell selection method and a cell reselection method in an IDLE mode for selecting the best base station to access. In addition, in the CONNECTD mode, the UE must perform a radio resource observation and a cell selection method (RRM (Radio Resource Management) measurement) in order to perform handover to move to a better cell. In order to do this, each mobile station must be able to observe or calculate a measurement value or a value derived from a measurement representative of each cell. To this end, in the existing LTE, different base stations allocate orthogonal resources in the shared frequency band using the Omni- And transmits a reference signal (Cell Specific Reference Signal) of each cell using the reference signal. The terminal measures the received signal strength (RSRP) of each cell.

Also, in a next generation communication system considering beamforming, different base stations transmit different cells and reference signals of respective beams to different resources while using different beams, Various methods for deriving one representative value corresponding to a corresponding cell using measurement values of a plurality of beams transmitted from one cell have been studied.

The research on the reference signal transmission using one beam or the reference signal transmission using a plurality of beams has existed. However, when each base station uses two or more beams having different beam areas, coverage, transmission period, There has been no research on the case of transmitting two or more reference signals generated by different signal generation rules.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a method for allocating and transmitting different reference signals to a mobile station in a beamforming based system including one or more base stations and one or more mobile stations and a method for performing cell measurement and mobility management using different reference signals transmitted to the mobile station Thereby providing a method for performing the operation.

According to an aspect of the present invention, there is provided a method of processing a control signal in a wireless communication system, the method comprising: receiving a first control signal transmitted from a base station; Processing the received first control signal; And transmitting the second control signal generated based on the process to the base station.

According to an embodiment of the present invention, in a beamforming-based system including one or more base stations and one or more terminals, a base station may allocate different reference signals to terminals, The cell measurement and the mobility management operation can be performed.

In addition, the terminal recognizes common information such as time, frequency, and direction among different reference signals, thereby performing unnecessary operations for selecting transmission and reception beams between the base station and the terminal, for example, transmitting and receiving beams, And the operation of repeating the process of selecting a beam through the optical network is minimized, thereby reducing the power and time delay of the terminal.

1 is a diagram illustrating an example of a reference signal transmitted according to an embodiment of the present invention.
2 is a diagram illustrating an example of different types of reference signals having different numbers of blocks in the same time resource according to an embodiment of the present invention.
3 is a diagram illustrating examples of different types of reference signals transmitted in the same period using the same frequency band in different time resources according to an embodiment of the present invention.
4 is a diagram illustrating an example of reference signals transmitted at different periods using the same frequency band in different time resources according to an embodiment of the present invention.
5A to 5C are diagrams for explaining an example of a resource allocation method when a CSI-RS to be set according to an embodiment of the present invention is correlated with an existing SS.
6 is a diagram for explaining another example of a resource allocation method when a CSI-RS to be set according to an embodiment of the present invention is correlated with an existing SS.
7 is a view for explaining another example of a resource allocation method when a CSI-RS to be set according to an embodiment of the present invention is correlated with an existing SS.
8 is a diagram for explaining that a PBCH block uses offset to set a CSI-RS burst set, a burst, and a block according to an embodiment of the present invention.
9 is a diagram for explaining that a PBCH burst uses an offset to set a CSI-RS burst set, a burst, and a block according to an embodiment of the present invention.
10 is a diagram for explaining that a PBCH burst set uses offset to set a CSI-RS burst set, a burst, and a block according to an embodiment of the present invention.
11A and 11B are diagrams for explaining a case where a base station occupies a downlink resource for transmitting configuration information for CSI-RS measurement using a broadcast channel, and performs CSI-RS measurement on the downlink resource FIG. 2 is a view for explaining an example of setting information for a user.
FIG. 12 is a flowchart illustrating a method of reporting a measurement result according to an RS setting of a serving BS, an established RS measurement, and a UE condition according to an exemplary embodiment of the present invention.
FIG. 13 is a flowchart illustrating an embodiment of a method in which a serving BS sets information on different RSs to a mobile station according to an exemplary embodiment of the present invention. Referring to FIG.
FIG. 14 is a flowchart illustrating an embodiment of a method for setting RS type 1 information to a serving BS according to an exemplary embodiment of the present invention. Referring to FIG.
15 is a flowchart illustrating an embodiment of a method for setting up RS type 1 information for a serving BS according to an embodiment of the present invention.
FIG. 16 is a flowchart illustrating an embodiment of a method for setting up RS type 1 information for a serving BS according to an exemplary embodiment of the present invention. Referring to FIG.
FIG. 17 is a flowchart illustrating an embodiment of a method for setting up RS type 1 information for a serving BS according to an exemplary embodiment of the present invention. Referring to FIG.
18A to 18C are block diagrams showing the structure of a terminal according to an embodiment of the present invention.
19 is a block diagram showing the structure of a base station according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description, 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 following terms are defined in consideration of the functions of the present invention, and these may be changed according to the intention of the user, the operator, or the like. Therefore, the definition should be based on the contents throughout this specification.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention, and the manner of achieving them, will be apparent from and elucidated with reference to the embodiments described hereinafter in conjunction with the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. Is provided to fully convey the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout the specification.

The present invention relates to a next generation wireless communication system, and more particularly, to a method of allocating and transmitting different reference signals to a terminal in a beamforming based system including one or more base stations and one or more terminals, And more particularly, to a system, method, and apparatus for performing cell measurement and mobility management operations using a plurality of cells.

In addition, the present invention relates to a beam measurement by condition and a beam measurement report by condition in a wireless system in which a base station and a terminal using multiple antennas exist.

The present invention relates to a beamforming method and a beamforming method in a beamforming system, particularly a beamforming system using multiple antennas, in a wireless communication system including a base station using multiple antennas and a terminal, And transmits the reference signal configuration information for observing and measuring the reference signal transmitted from the serving base station or the neighboring base station to the mobile station.

The present invention also relates to a system and method for beamforming, in particular, a beamforming system using multiple antennas in a wireless communication system in which a base station and a terminal using multiple antennas are present, When there is a reference signal transmitted from the base station, additional reference signal configuration information for observing and measuring the additional reference signal, in addition to a reference signal that is basically observed and measured, Or information transmitted by a neighboring base station to the mobile station, a method of transmitting the same, and a procedure.

<Legacy technology: Legacy LTE CSI-RS configuration>

CSI-RS config in existing LTE standard. The structure and components of the system are as follows.

Antenna ports [TS36.211, Ch. 6.10.5]

- # of antenna ports for RS Tx.

Resource [TS36.211, Ch. 6.10.5.2-1]

- Mapping RS to RE

Subframe [TS36.211, Ch. 6.10.5.3-1]

- RS Periodicity

- Subframe offset

P-C [TS36.213, Ch. 7.2.5]

- UE assumption on reference PDSCH transmitted power for CSI feedback

<Legacy technology: Legacy LTE CSI-RS based Discovery RS (DRS) configuration>

The existing LTE standard CSI-RS based DRS config. The structure and components of the system are as follows.

· Physical cell ID

- UE assumed cell of RS / SS corresponds to

· Scrambling ID

- Pseudo random sequence generator param.

Resource (= same as RS-Config.)

Subframe offset

· RS- Individual offset

- Individual offset to a specific RS resource

<A. Types and structure of reference signals considered: Considering RS type and architecture>

The UE can measure the reference signal transmitted through the beam sweeping configuration in which the BSs transmit the beam using different antenna configurations. The reference signal under consideration includes a synchronization signal and a channel state measurement reference signal (CSI-RS), but it is not necessarily limited thereto.

In one embodiment, a reference signal (RS) includes a burst set to be transmitted with a certain period as shown in FIG. 1, and includes bursts transmitted continuously or at intervals in the burst set , And may contain blocks that are transmitted continuously or at some interval within the burst. In this case, each block may transmit beamformed signal information using different or the same antenna configuration, and the beam sweeping unit that transmits the RS while changing the beam may be a block, a burst, or a burst set Of course.

In another embodiment considered, reference signals (RSs) of different types have the same period as shown in FIG. 2 and may be transmitted using different frequency bands on the same time resource. In this case, the different types of reference signals also include burst sets that are transmitted with certain periods, bursts that are transmitted continuously or at certain intervals in the burst set, and are consecutive or within an interval May include blocks that are transmitted with &lt; RTI ID = 0.0 &gt; In this case, each block may transmit beamformed signal information using different or the same antenna configuration, and the beam sweeping unit that transmits the RS while changing the beam may be a block, a burst, or a burst set Of course.

Also, referring to FIG. 2, it can be seen that different types of reference signals may have different numbers of blocks within the same time resource. Although FIG. 2 shows an example in which there are two RS Type 2 blocks corresponding to one RS Type 1 block, it is needless to say that the numbers are not fixed and can be variously considered.

Referring to FIG. 3, reference signals (RSs) of different types in the other embodiments to be considered have the same period as shown in FIG. 3, and may be transmitted using the same frequency band on different time resources to be. In this case, the different types of reference signals also include burst sets that are transmitted with certain periods, bursts that are transmitted continuously or at certain intervals in the burst set, and are consecutive or within an interval May include blocks that are transmitted with &lt; RTI ID = 0.0 &gt; In this case, each block may transmit beamformed signal information using different or the same antenna configuration, and the beam sweeping unit that transmits the RS while changing the beam may be a block, a burst, or a burst set Of course.

It goes without saying that the different kinds of reference signals may be transmitted on different time and frequency resources with independent different periods without correlation with each other. FIG. 4 illustrates RSs transmitted using the same frequency band on different time resources with different periods as an embodiment.

B. Components of signals that the network can deliver to the terminal for measurement of the reference signal: Elements for RS measurement configuration from network to UE>

When there are a serving base station and a neighbor base station capable of transmitting different types of RSs, the network can provide the following information to the terminal to measure the corresponding RSs (or any RS). It is needless to say that the contents to be described in this patent need not necessarily be limited to any one kind of RS, and that the network can be any one of configurable RSs. Currently available RSs include but are not limited to: Sync. Signal (PSS, SSS, SS), Cell Specific RS, Beam specific RS, Beam refinement RS, CSI-RS, Discovery RS, DM-RS,

· Cell info

- Cell ID

˚ physical cell ID, logical cell ID, virtual cell ID

- Scrambling ID

˚ Parameter of Pseudo random sequence generator

- Cell Offset

˚ Subframe offset between serving cell and target measurement cell

˚ Frequency offset between serving cell and target measurement cell

˚ Timing offset between serving cell and target measurement cell

˚ Symbol / Slot boundary offset between serving cell and target measurement cell

· Frequency info

- Frequency channel ID, freq. ID, ARFCN, Carrier ID, subcarrier ID, ...

· RS resource info

- Antenna ports for RS tx

˚ # of antenna ports, ID of antenna ports, ...

- Resource mapping info.

˚ For UE to distinguish RE for receiving a specific RS

˚ I.e., Resource mapping of CSI-RS to RE

- # of blocks within a burst (Nblock)

- # of bursts within a burst set (Nburst)

- Subframe info

˚ To specify a subframe which contains the RS

In LTE, subframes containing CSI reference signals shall be satisfied

# Of subframes, time, # of symbols, # of TTI, # of slots, # of mini-slots, # of PDCCH TTI, ...

- Periodicity

˚ Periodicity of burst set in terms of # of subframes, time, # of symbols, # of TTI, # of slots, # of mini-slots, # of PDCCH TTI, ...

˚ Periodicity of burst within a burst set in terms of # of subframes, time, # of symbols, # of TTI, # of slots, # of mini-slots, # of PDCCH TTI, ...

˚ Periodicity of block within a burst in terms of # of subframes, time, # of symbols, # of TTI, # of slots, # of mini-slots, # of PDCCH TTI, ...

- RS Offset (within a cell, i.e., from serving cell or from target cell)

˚ Offset between CSI-RS (target RS) block w.r.t. SS (pre-configured RS) block

Offset between CSI-RS (target RS) burst w.r.t. SS (pre-configured RS) block

Offset between CSI-RS (target RS) burst set w.r.t. SS (pre-configured RS) burst

Offset between CSI-RS (target RS) burst set w.r.t. SS (pre-configured RS) burst set

˚ This offset can be offset and / or frequency offset

· Other info

- Indication

° That the RS info. is exactly the same as the serving cell's RS.

° That the RS info. can be used for L3 mobility (to trigger measurement report)

- Index (s) from another RS

˚ If the network wants for the UE to measure part of (one or more than one) RSs from another RS

Another RS should be configured to UE

Ν UE should know the index of RSs within the another RS

˚ Index (s) could be block index, burst index, or burst set index from the another RS

- Sub-frame number

˚ To specify the absolute value of the subframe for accurate timing

- # of allocated CSI-RSs.

- Size of allocated CSI-RS

- Number of beams to be considered for cell level measurement quantity derivation (N)

˚ In order to compare each cell and select a better cell, a representative value of the measured value of each cell is required. In order to derive such a representative value in a beamforming system, for example, the N best reference signal measurements among all the reference signals transmitted by different beams are beamformed, It is of course possible to calculate the representative value of the cell by taking an average value of the reference signal measurement values that have a measurement value within an offset from the measurement value or a measurement value of any absolute threshold or more.

˚ When a cell representative value is derived using one or more reference signal measurement values as described above, when a base station transmits a setup for measuring a reference signal to a UE for fair comparison, N of the reference signal measurement value to be considered in order to calculate the cell representative value using the reference signal.

By providing all or a part of the various information to the UE, the network can set the UE to measure any RS, and various embodiments will be described in the future.

&Lt; C. Measurement method of UE terminal configuration:

When there is a serving BS and a neighbor BS transmitting the RS that can be measured and received by the MS, the RS transmits RS information transmitted from the serving BS and the neighbor BS to the MS .

<< C-1. Dedicated signaling based measurement configuration (i.e., RRC / MAC / PHY signaling) >>

A method of directly providing the RS information of the Serving cell and the target cell to be measured to the UE to which the serving BS belongs

Basically, we consider a method of independently transmitting messages in unicast form to each terminal. In addition, when one or more terminals can be grouped and designated, it is also possible to transmit a message to a plurality of terminals simultaneously in a multicast form.

In one embodiment, the BS may configure the CSI-RS based on the dedicated signaling for the UE to measure and report channel information with the BS. The CSI-RS can select and configure an antenna configuration, a transmission power, a resource, and the like in a form that is effective only for a specific UE. The CSI-RS can transmit the RRC message to the UE in a form of an RRC message (RRConnectionReconfiguration) Of course.

In this embodiment, the CSI-RS to be transmitted to the mobile station by the base station is information that is only valid in the cell, and is information that does not need to be measured or estimated by other mobile stations belonging to the neighboring cell. Therefore, when the corresponding CSI-RS is set, the UE knows that the corresponding CSI-RS is valid only in the cell and knows the transmission base station and the transmission cell information, so that the base station can send only information related to the CSI-RS measurement .

For example, the BS may set the CSI-RS to the UE in a dedicated signaling manner for measuring the channel in the cell. The CSI-RS may be designed to include a case where each CSI-RS is transmitted in a different beam from a different antenna setting in consideration of a multi-beamforming environment.

Of course, it is needless to say that a signal actually considered and transmitted may be transmitted including all or a part of the following configurations.

<CSI-RS Config>

- Indicator that this CSI-RS is only for intra-cell use

˚If this indicator is off, this CSI-RS is also for inter-cell use

- Indicator that this CSI-RS is only valid for a specific UE

˚If this indicator is off, this CSI-RS is common and for non-specific UE

- Indicator that this CSI-RS is for beam refinement and scheduling

- Array of Antenna ports w / port # per beam

- Array of # of using antenna ports per beam

- Array of Resource per beam

- Periodicity

˚ Periodicity of CSI-RS burst set

˚ Periodicity of CSI-RS burst within a CSI-RS burst set

˚ Periodicity of CSI-RS block within a CSI-RS burst

- Offset: LTE consider from SSS to CSI-RS

˚ w / id (index, SFN) of originated SS (block / burst / burst set)

˚ w / id of destined CSI-RS type (block / burst / burst set)

˚ offset from the SS (block / burst / burst set) to CSI-RS (block / burst / burst set)

˚ The above offsets could be time offset and / or frequency offset

- CSI-RS block size

˚ Actual size of CSI-RS block in terms of min. Unit

i.e., ratio of CSI-RS block / symbol / s-frame size w.r.t. symbol size.

˚ Ratio of CSI-RS block / symbol / s-frame size w.r.t. NR-SS size

˚ bitmap of (..., 0.25, 0.5, 1, 2, 3, ...)

- Gap between CSI-RS blocks

˚ Consider if there is separation

- Window for CSI-RS measurement

˚ # of CSI-RSs can be measured in one window

˚ Time duration of a measurement window

- p-C

- Index (or array of indices) from other RS beams

- Beam info

˚ Beam ID (or SS block / burst / burst set ID)

CSI-RS burst, CSI-RS burst, or CSI-RS burst set, such as CSI-RS measurement unit.

In another embodiment, the BS may set a CSI-RS based on dedicated signaling for measuring and reporting channel information with the BS, as well as neighboring cell information measurement. The CSI-RS may include not only the serving cell information but also neighbor cell setting information. The information may be valid only for a specific UE, and the base station may select an antenna configuration, a transmission power, and a resource for an unspecified number of UEs It is needless to say that such information can be transmitted to the corresponding terminal through various methods in the form of an RRC message (RRConnectionReconfiguration), a MAC message, a PHY message, or the like.

In this embodiment, the CSI-RS to be transmitted from the base station to the UE is information that is effective not only in the cell but also in neighboring cells, and the UEs belonging to the serving cell can measure or estimate CSI-RSs transmitted by neighboring cells. Therefore, the UE should know that the corresponding CSI-RS includes neighbor cell information when the corresponding CSI-RS is set, and may also include additional information for successfully receiving a signal transmitted from the serving cell .

For example, the BS may set the CSI-RS to the UE in a dedicated signaling manner for measuring the channel in the cell. The CSI-RS may be designed to include a case where each CSI-RS is transmitted in a different beam from a different antenna setting in consideration of a multi-beamforming environment.

· Cell info

- Cell ID

˚ physical cell ID, logical cell ID, virtual cell ID

- Scrambling ID

˚ Parameter of Pseudo random sequence generator

- Cell Offset

˚ Subframe offset between serving cell and target measurement cell

˚ Frequency offset between serving cell and target measurement cell

˚ Timing offset between serving cell and target measurement cell

˚ Symbol / Slot boundary offset between serving cell and target measurement cell

· Frequency info

- Frequency channel ID, freq. ID, ARFCN, Carrier ID, subcarrier ID, ...

-Frequency offset (from start point of the radio frame, from the SS block / burst / burst set)

· Beam info

- Beam ID (or SS block / burst / burst set ID)

· Other info

- Indication

° That the RS info. is exactly the same as the serving cell's RS.

° That the RS info. can be used for L3 mobility (to trigger measurement report)

- # of CSI-RS blocks within a CSI-RS burst / burst set

- # of CSI-RS bursts within a CSI-RS burst set

- Index (s) from another RS

˚ If the network wants for the UE to measure part of (one or more than one) RSs from another RS

Another RS should be configured to UE

Ν UE should know the index of RSs within the another RS

˚ Index (s) could be block index, burst index, or burst set index from the another RS

- Sub-frame number

˚ To specify the absolute value of the subframe for accurate timing

- Number of beams to be considered for cell level measurement quantity derivation (N)

˚ In order to compare each cell and select a better cell, a representative value of the measured value of each cell is required. In order to derive such a representative value in a beamforming system, for example, the N best reference signal measurements among all the reference signals transmitted by different beams are beamformed, It is of course possible to calculate the representative value of the cell by taking an average value of the reference signal measurement values that have a measurement value within an offset from the measurement value or a measurement value of any absolute threshold or more.

˚ When a cell representative value is derived using one or more reference signal measurement values as described above, when a base station transmits a setup for measuring a reference signal to a UE for fair comparison, N of the reference signal measurement value to be considered for calculating the cell representative value using the reference signal.

RS CSI-RS block, CSI-RS burst, or CSI-RS burst set, such as the CSI-RS measurement unit.

Hereinafter, a method of more accurately and easily allocating resources of an RS to be set using offset between an existing RS (SS) and a RS (CSI-RS) to be set will be described.

<<< Figures 5a to 5c >>>

Referring to FIGS. 5A to 5C, when the CSI-RS to be set has a correlation with an existing SS, it is shown that such resource allocation can be facilitated by using an offset rather than a specific subframe number. The CSI-RS setup information may be present in a broadcasting channel (PBCH) or may exist in a control channel / data channel (PDCCH / PDSCH) designated by a broadcasting channel (PBCH) And may be transmitted to the terminal through a signal such as PHY / MAC / RRC / RLC.

In addition, the CSI-RS setting information may be divided and some of the CSI-RS setting information may be present in a broadcast channel (PBCH), and some of the CSI-RS setting information may be present in any control channel / data channel (PDCCH / PDSCH) designated by a broadcast channel (PBCH) And another part may be transmitted to the terminal through a signal such as PHY / MAC / RRC / RLC.

5A shows a method of allocating a CSI-RS burst set resource based on an SS burst set, a method of allocating a CSI-RS burst resource using an offset based on an SS burst, and a CSI-RS block resource as an offset based on an SS block Quot; &quot;.

5B shows a method of allocating CSI-RS burst set resources based on time and frequency offset based on SS burst set, a method of allocating CSI-RS burst resources based on SS burst based on time and frequency offset, And a CSI-RS block resource is allocated at a frequency offset. The figure shows a method of allocating CSI-RS resources occupying different frequencies in the same time resource.

FIG. 5C shows a method of allocating different CSI-RS resources with respect to time and frequency offset based on CSI-RS. The figure shows a method of allocating CSI-RS resources occupying different frequencies in the same time resource.

Example 1:

CSI-RS config. May be in the form of all or part of the following sequence.

intra - cellUseInd BOOLEAN ,

Indication whether the corresponding CSI-RS is dedicated to the cell or can be used for cell-to-cell handover

physCellID       INTEGER (0 ... N_ pcid ),

CSI-RS belonging Cell ID

antennaPortsCount    ENUMERATED { an1 , an2 , an4 , an8 , an16 , ... N_ ancnt },

Corresponding CSI-RS transmit antenna port configuration

resourceConfigList ResourceConfigList ,

The transmission resource location of the corresponding CSI-RSs (list)

subframeConfigList SubframeConfigList ,

The transmission subframe location of the corresponding CSI-RSs (list)

freqConfigList FreqConfigList ,

The transmission frequency of the corresponding CSI-RSs, the subcarrier location

timeOffset       INTEGER (0 ... N_to),

Relative time interval between the corresponding CSI-RS transmission subframe / slot / symbol and the corresponding NR-SS (associated with the PBCH or measured by the terminal)

frequencyOffset     INTEGER (- Nfo1 ... N_ fo2 ),

The relative frequency between the CSI-RS transmission subframe / slot / symbol and the corresponding NR-SS associated with the PBCH (or measured by the UE), the subcarrier interval

periodicity INTEGER (0 ... N_ prd ),

The corresponding CSI-RS transmission period (the next scheduled CSI-RS transmission period)

p-C INTEGER (-N_ negpc ... N_ pospc ),

UE assumption on reference PDSCH transmitted power for CSI feedback

measUnit        INTEGER (0 ... N_ munit ),

The CSI-RS measurement unit (slot, symbol, subframe, sub-symbol, mini-slot, ...)

Rate display: can be expressed in multiples of the smallest unit or expressed as a ratio of the reference unit (NR-SS size)

Indicator: Indication can be expressed by 1: 1 mapping with each measurement unit

numberOfMeasUnits    INTEGER (0 ... N_ munits ),

The number of CSI-RS units required to be associated with the reference NR-SS

measGap         INTEGER (0 ... N_mgap),

Interval between CSI-RS that requires measurement associated with reference NR-SS

measWindow       INTEGER (0 ... N_ mwindow ),

Total CSI-RS measurement time associated with baseline NR-SS

csi- rs - IDList CSI - RS - IDList

The corresponding CSI-RS ID list (beam ID list, scrambling id list)

QCL -ID

The ID of the specific QCL for which the corresponding CSI-RS has a QCL

QCL stands for quasi co-location, which indicates that certain characteristics are identical between two different signals. time QCL shows that the time synchronization is the same (or almost similar), the frequency QCL shows the same (or almost similar) frequency synchronization, and the spatial QCL shows that the transmission / reception directions are similar. It can be assumed that two different signals having the same time, frequency, and spatial QCL are used for the directional antenna setting and beam in which the transmitting and receiving ends of the respective signals exist in the same physical position and have the same direction, The QCL is defined as the correlation between signals that can be transmitted / received using the same beam.

QCLed - NR -SS-ID

The ID (NR-SS block index) of a specific NR-SS for which the corresponding CSI-RS has a QCL. The UE having the CSI-RS configured uses the reception beam having the best performance among the reception beams used for measuring the NR-SS (block, burst, burst set) corresponding to the QCLed-NR-SS-ID, -RS. &Lt; / RTI &gt; In this operation, the UE changes the reception beam, receives the CSI-RS several times, skips the operation for finding the reception beam and reception CSI-RS performance capable of receiving the optimal CSI-RS, and receives the NR-SS You can find the best CSI-RS performance right from your terminal beam. As a result, the terminal can reduce power consumption and measurement delay.

QCLed -CSI- RS -ID

The ID of a specific QCLed-CSI-RS with which the corresponding CSI-RS has a QCL. The UE having received the QCLed-CSI-RS receives the corresponding CSI-RS using the reception beam having the best performance among the reception beams used for measuring the QCLed-CSI-RS corresponding to the QCLed-CSI-RS-ID can do. In this operation, the UE changes the reception beam and receives the CSI-RS several times, skips the operation for finding the reception beam and reception CSI-RS performance capable of receiving the optimal CSI-RS, and transmits the QCLed-CSI-RS The best CSI-RS performance can be found directly using the terminal beam used for receiving. As a result, the terminal can reduce power consumption and measurement delay.

Num -CSI- RS -per- NR -SS

QCLed Number of CSI-RS beams associated with NR-SS.

The number of beams is used to find the timing of CSI-RS.

QCLed detects the start timing of CSI-RSs to be transmitted after offset from NR-SS,

CSI-RS as many as Num-CSI-RS-per-NR-SS from the corresponding starting point

Numerology-ID

ID of the Numerology to which the corresponding CSI-RS is transmitted

The NR-SS ID or the CSI-RS ID may be replaced with a parameter indicating an ID of any other reference signal RS.

Example 2:

CSI-RS config. May be in the form of all or part of the following sequence.

CSI- RS -ID

The corresponding CSI-RS ID (beam ID, scrambling id)

QCL -ID

The ID of the specific QCL for which the corresponding CSI-RS has a QCL

QCLed - NR -SS-ID

The ID (NR-SS block index) of a specific NR-SS for which the corresponding CSI-RS has a QCL. The UE having the CSI-RS configured uses the reception beam having the best performance among the reception beams used for measuring the NR-SS (block, burst, burst set) corresponding to the QCLed-NR-SS-ID, -RS. &Lt; / RTI &gt; In this operation, the UE changes the reception beam, receives the CSI-RS several times, skips the operation for finding the reception beam and reception CSI-RS performance capable of receiving the optimal CSI-RS, and receives the NR-SS You can find the best CSI-RS performance right from your terminal beam. As a result, the terminal can reduce power consumption and measurement delay.

QCLed -CSI- RS -ID

The ID of a specific QCLed-CSI-RS with which the corresponding CSI-RS has a QCL. The UE having received the QCLed-CSI-RS receives the corresponding CSI-RS using the reception beam having the best performance among the reception beams used for measuring the QCLed-CSI-RS corresponding to the QCLed-CSI-RS-ID can do. In this operation, the UE changes the reception beam and receives the CSI-RS several times, skips the operation for finding the reception beam and reception CSI-RS performance capable of receiving the optimal CSI-RS, and transmits the QCLed-CSI-RS The best CSI-RS performance can be found directly using the terminal beam used for receiving. As a result, the terminal can reduce power consumption and measurement delay.

Numerology-ID

ID of the Numerology to which the corresponding CSI-RS is transmitted

Example 3:

CSI-RS config. May be in the form of all or part of the following sequence.

NR -SS-based-time-offset

If the timing of the corresponding CSI-RS is offset from a specific NR-SS, the corresponding offset value

Here, the specific NR-SS is an NR-SS that is a corresponding CSI-RS and a QCL, and this information can be implicitly known to the UE through observation or explicitly transmitted as a QCLed-NR-SS-ID to be.

NR -SS-offset-indicator

An indicator indicating that the time offset of the corresponding CSI-RS is offset from a particular NR-SS with a QCL. If TRUE, the timing of the corresponding CSI-RS is offset from a specific NR-SS in relation to the corresponding CSI-RS and QCL. If False, the timing of the corresponding CSI-RS is offset from the frame boundary (radio frame, slot, symbol ...) Value.

CSI- RS -RE-mapping

When a specific mapping method is specified in a table standard, the terminal and the base station exchange indexes to successfully and efficiently share the mapping. .

Periodicity-ID

Is the index or the actual value of the period that indicates the cycle in which the CSI-RS is repeated.

Example 4:

CSI-RS config. May be in the form of all or part of the following sequence.

In the above embodiment, the maximum common information that each CSI-RS resource can have is transmitted in the cell config, and individual information possessed only by each CSI-RS is provided in the form of a list.

Example 5: All resource information transmission

This embodiment describes an embodiment in which the resources of all the CSI-RSs are set one by one when the base station sets up to view any RS (CSI-RS) to the UE.

Example 6: NR-SS based connection transmission

When the base station observes a certain RS (CSI-RS), the resource of the corresponding RS (hereinafter referred to as CSI-RS) is correlated with any reference RS (NR-SS or CSI-RS, hereinafter referred to as NR-SS) So that the terminal can confirm it. In the present embodiment, an embodiment is described in which CSI-RSs having the same offset for all reference NR-SSs are set without notifying the ID of the reference NR-SS in which the specific CSI-RS correlates. The embodiment shows the correlation in FIG. 5A.

A terminal configured to receive the CSI-RS config. Can determine which one or more CSI-RSs are set with respect to a cell in which the corresponding CSI-RS is configured using the above embodiment, (CSI-RS transmission position, antenna port, etc.) and common information (NR-SS, scrambling ID, numerology, antenna port, The CSI-RSs can be distinguished and received through any operation using parameters provided in the setting information. In one embodiment of such an operation, the UE can determine and measure CSI-RS positions in the following manner.

One) Identify the start point of the CSI-RS transmission with the measured NR-SS and offset (time / freq)

2) Identify the need to receive one CSI-RS in measUnit size from the corresponding start point

3) Given total numberofmeasUnits need to receive CSI-RS

4) Know that there is a measGap interval between each CSI-RS

5) From each CSI-RS ID csi-rs-IDList

6) It is understood that each CSI-RS is retransmitted on the same frequency resource in periodicity unit

Example 7: NR-SS based connection transmission

When the base station observes a certain RS (CSI-RS), the resource of the corresponding RS (hereinafter referred to as CSI-RS) is correlated with any reference RS (NR-SS or CSI-RS, hereinafter referred to as NR-SS) So that the terminal can confirm it. In the present embodiment, one or more CSI-RSs having the same offset for all reference NR-SSs are set in a one-to-many relationship without notifying the ID of the reference NR-SS having a correlation with a specific CSI-RS An embodiment will be described. The embodiment shows the correlation in Figs. 5B and 5C.

Example 8 NR-SS ID Transmission Based on NR-SS based Connection Relationship and Connection Relationship

When the base station observes a certain RS (CSI-RS), the resource of the corresponding RS (hereinafter referred to as CSI-RS) is correlated with any reference RS (NR-SS or CSI-RS, hereinafter referred to as NR-SS) So that the terminal can confirm it. It is needless to say that in this embodiment, one or more CSI-RSs having different offsets with respect to the reference NR-SSs may be set by informing the ID of the reference NR-SS having a correlation with a specific CSI-RS. The embodiment shows the correlation in Figs. 5B and 5C.

The UE having received the information can specify the CSI-RS resource from the NR-SS having the specific NR-SS ID, and can transmit the corresponding NR-SS using the UE Rx beam having the optimum performance for receiving the corresponding NR- And a CSI-RS having a correlation with the CSI-RS.

<<< Figure 6 >>>

Referring to FIG. 6, when the CSI-RS to be set has a correlation with an existing SS, it is shown that such resource allocation can be facilitated by using an offset rather than a specific subframe number. The CSI-RS setup information may be present in a broadcasting channel (PBCH) or may exist in a control channel / data channel (PDCCH / PDSCH) designated by a broadcasting channel (PBCH) And may be transmitted to the terminal through a signal such as PHY / MAC / RRC / RLC.

In addition, the CSI-RS setting information may be divided and some of the CSI-RS setting information may be present in a broadcast channel (PBCH), and some of the CSI-RS setting information may be present in any control channel / data channel (PDCCH / PDSCH) designated by a broadcast channel (PBCH) And another part may be transmitted to the terminal through a signal such as PHY / MAC / RRC / RLC.

FIG. 6 shows a method for allocating CSI-RS burst set resources at offset based on SS burst, a method for allocating CSI-RS burst set resources at offset based on SS block, and CSI-RS burst resources for offset based on SS block Quot; &quot;.

<<< Figure 7 >>>

Referring to FIG. 7, when the CSI-RS to be set has a correlation with an existing SS, it is shown that such resource allocation can be facilitated by using an offset rather than a specific subframe number. The CSI-RS setup information may be present in a broadcasting channel (PBCH) or may exist in a control channel / data channel (PDCCH / PDSCH) designated by a broadcasting channel (PBCH) And may be transmitted to the terminal through a signal such as PHY / MAC / RRC / RLC.

In addition, the CSI-RS setting information may be divided and some of the CSI-RS setting information may be present in a broadcast channel (PBCH), and some of the CSI-RS setting information may be present in any control channel / data channel (PDCCH / PDSCH) designated by a broadcast channel (PBCH) And another part may be transmitted to the terminal through a signal such as PHY / MAC / RRC / RLC.

7 shows a method of allocating a CSI-RS burst resource based on an SS burst set, a method of allocating a CSI-RS block resource using an offset based on an SS burst set, and a CSI-RS block resource using an offset based on an SS burst Quot; &quot;.

Using the offsets described in FIGS. 5A to 5C, 6 and 7, the base station can allocate CSI-RS resources to terminals (or terminals) in the following manner:

1. Indication of referred type of RS (i.e., SS burst set = 0, SS burst = 1, SS block = 2) + offset (# of subframes / slots / symbols, time,

With this option, UE can detect CSI-RS block / burst / burst set based on the referred RS.

With this option, the UE may know that the CSI-RS will transmit a specific resource to the same RS as the RS.

2. Indication of the specific resource of the referred type of RS (i.e., a resource of the reference point of the SS burst set / burst / block) + offset (# of subframes / slots / symbols, time, frequency,

With this option, UE can detect CSI-RS block / burst / burst set based on the referred resource location.

· With this option, UE may know that the CSI-RS will transmit a specific resource

i. That is, even if the reference resource is in the middle of the RS, the CSI-RS will transmit the same beams to the reference resource.

With this option, the network can allocate only RSCs as CSI-RS.

3. Indication of the specific resource of the referred type of RS (i.e., a resource of the reference point of the SS burst set / burst / block) + offset (# of subframes / slots / symbols, time, -of-CSI-RS resource

With this option, UE can detect CSI-RS block / burst / burst set based on the referred resource location.

· With this option, UE may know that the CSI-RS will transmit a specific resource

i. That is, even if the reference resource is in the middle of the RS, the CSI-RS will transmit the same beams to the reference resource.

With this option, the network can allocate only RSCs as CSI-RS.

4. Indication of referred type of RS (ie, SS burst set = 0, SS burst = 1, SS block = 2) + Indication of CSI-RS , CSI-RS block = 2) + offset (# of subframes / slots / symbols, time, frequency, ...)

With this option, UE can detect CSI-RS block / burst / burst set based on the referred RS.

With this option, the UE may know that the CSI-RS will transmit a specific resource to the same RS as the RS.

5. Indication of the referred type of RS (i.e., SS burst set = 0, SS burst = RS burst = 0, CSI-RS burst = 1, CSI-RS block = 2) + offset (# of subframes / slots / symbols, time , frequency, ...) + end-of-CSI-RS resource

With this option, UE can detect CSI-RS block / burst / burst set based on the referred resource location.

· With this option, UE may know that the CSI-RS will transmit a specific resource

i. That is, even if the reference resource is in the middle of the RS, the CSI-RS will transmit the same beams to the reference resource.

With this option, the network can allocate only RSCs as CSI-RS.

<< C-2. Broadcasting signal based measurement system (Master system information, System information, broadcasting signal, multicasting signal, ...) >>

A method of providing RS information of a cel to be measured by a base station to an unspecified number of terminals as a broadcast channel or a broadcast signal

In one embodiment, the terminal may transmit the RS configuration information in any broadcast channel or broadcast message.

It is a matter of course that the CSI-RS information that can be transmitted in the corresponding message may be a part of the various information described above.

<<< Figures 8, 9, 10 >>>

8, FIG. 9, and FIG. 10, when a CSI-RS to be set in a certain broadcast channel has a correlation with a corresponding broadcast channel (for example, it is transmitted in the same beam or occupies a resource block of the same size) It is shown that such resource allocation can be facilitated by using an offset rather than a specific subframe number. The CSI-RS setup information may be present in a broadcasting channel (PBCH) or may exist in a control channel / data channel (PDCCH / PDSCH) designated by a broadcasting channel (PBCH) And may be transmitted to the terminal through a signal such as PHY / MAC / RRC / RLC.

In addition, the CSI-RS setting information may be divided and some of the CSI-RS setting information may be present in a broadcast channel (PBCH), and some of the CSI-RS setting information may be present in any control channel / data channel (PDCCH / PDSCH) designated by a broadcast channel (PBCH) And another part may be transmitted to the terminal through a signal such as PHY / MAC / RRC / RLC.

FIG. 8 may illustrate that some PBCH blocks may use offset to set CSI-RS burst sets, bursts, and blocks.

FIG. 9 may illustrate that some PBCH bursts may use offset to set CSI-RS burst sets, bursts, and blocks.

FIG. 10 may illustrate that some PBCH burst sets may use offset to set CSI-RS burst sets, bursts, and blocks.

In this case, the terminal and the base station may implicitly know (by the standard) that the same resource is used by the base station as the PBCH set by the corresponding resource, or if the indicator is set, Of course.

In addition, since the PBCH is a signal continuously transmitted in a short period within the cell, it may not include the corresponding CSI-RS every time for power saving. In this case, it is of course possible to transmit a 1-bit indication to the PBCH whether the corresponding PBCH includes CSI-RS or not.

If it is desired to maximize the power saving, it is of course possible that the PBCH does not include other information, leaving only the minimum information required for CSI-RS detection, for example, offset.

<<< Figures 11a and 11b >>>

11A, a BS occupies a downlink resource to transmit configuration information for measurement of a CSI-RS using a certain broadcast channel, and allocates the CSI-RS to an unspecified number of terminals (or a specific terminal Of the CSI-RS. The CSI-RS setup information may be present in a broadcasting channel (PBCH) or may exist in a control channel / data channel (PDCCH / PDSCH) designated by a broadcasting channel (PBCH) And may be transmitted to the terminal through a signal such as PHY / MAC / RRC / RLC.

In addition, the CSI-RS setting information may be divided and some of the CSI-RS setting information may be present in a broadcast channel (PBCH), and some of the CSI-RS setting information may be present in any control channel / data channel (PDCCH / PDSCH) designated by a broadcast channel (PBCH) And another part may be transmitted to the terminal through a signal such as PHY / MAC / RRC / RLC.

An indicator indicating that the control channel or data channel (PDCCH / PDSCH) resource schedule information and the corresponding resource (PDCCH / PDSCH) includes CSI-RS allocation information is included in the broadcast channel (PBCH) Of course.

11B shows a case where a broadcast channel sets CSI-RS detailed information using CSI-RS common information, a dedicated PHY / MAC / RLC / RRC signal, and the terminal measures a CSI-RS by combining the two pieces of information Frame structure and procedure for operation.

11B, the network provides common information that the CSI-RS resources have over the broadcast channel (PBCH), and the detailed CSI-RS resource setting (PHY / MAC / RLC / RRC) This is an example of providing information. In this embodiment, offset between NR-SS and CSI-RS burst (or burst set) is provided using a broadcast channel (PBCH), and detailed CSI-RS measurement unit, number, CSI- Signal.

Of course, any CSI-RS configuration information other than the above embodiment may be distributed to the terminal through a broadcast channel, a control channel, or a data channel and provided to the terminal.

<< C-3. Self-discoverable signal based measurement configuration >>

The base station does not provide the RS information of the cel to be measured to the unspecified number of terminals through the signal transmission but discovers the measurement setting itself by using the method described in the standard

In one embodiment, if the UE finds any RS, it can discover and measure CSI-RS resources by themselves using the following rules.

1. Specified offset to discover CSI-RS block / burst / burst set according to SS block / burst / burst set resource.

<< Figure 12. Pre-configured RSs >>

Referring to FIG. 12, different RS setting steps for a serving base station, an established RS measurement step for a terminal, and a measurement result reporting step according to conditions of the terminal can be considered. As shown in FIGS. 5A to 5C, the serving BS can set different RS information to the MS for measurement purposes, and it is also possible to set a condition for sending a measurement report (MR). The UE shall attempt to measure the different RSs according to the set conditions, determine the condition to transmit the measurement report as set based on the measurement result, and report the measurement result when the condition is satisfied.

The measurement report or the RS Type 2 setting request message may include a measurement result for the set RS. The measurement result is managed according to the measurement object ID. It can be recognized.

<< Figure 13. Pre-configured RSs with UE selective measurement >>

Referring to FIG. 13, the serving BS sets information on different RSs to the MS. The UE having the information about the different RSs basically performs continuous measurement for the serving cell and the neighboring cells (RS Type 1, ie, Sync. Signal) for one RS, and if any condition (Condition_Type2) If satisfied, another measurement of the other type of RS Type 2 is performed.

As shown in FIG. 13, the serving BS can set different RS information to the UE for measurement purposes, and it is also possible to set any condition (Condition_Type2) for performing the measurement on the RS of the different types. It is also possible to set the conditions for sending the measurement report (MR). The Condition_Type2 may be the same as or different from the Condition_MR, and the detailed condition may be transmitted in the form of the existing LTE A1 to A6.

The measurement configuration for the RS Type 2 (i.e., CSI-RS) can inform the UE of any indication that the Condition_Type2 is included (i.e., indication_condition_Type2) If included, it is of course also possible to measure the RS if these conditions are met.

In addition, in another embodiment, if the UE does not have such a Condition_Type2 and a measurement setup for RS Type 2 (i.e., CSI-RS) is performed but a measurement report triggering event for the RS is not specifically specified It is needless to say that the RS type 2 measurement can be performed when any condition (Condition_Type2) is satisfied according to its own condition.

The UE shall attempt to measure the different RSs according to the set conditions, determine the condition to transmit the measurement report as set based on the measurement result, and report the measurement result when the condition is satisfied.

The measurement report or the RS Type 2 setting request message may include a measurement result for the set RS. The measurement result is managed according to the measurement object ID. It can be recognized.

If the BS has one or more RSs (eg, CSI-RS) having a QCL correlation with the corresponding RS (eg, NR-SS), the RS may set the RSs as RS Type 2 and request measurement Of course.

<< Figure 14. RS Type 2 configuration based on UE signal >>

Referring to FIG. 14, the serving BS sets information on RS Type 1 to the MS. The UE having received the information on the RS Type 1 basically performs continuous measurement on the serving cell and neighboring cells (RS Type 1, ie, Sync. Signal) for the corresponding RS. If any condition (Condition_Type2) is satisfied , It performs an uplink transmission including a measurement result report for RS Type 1 or a RS Type 2 setting request.

The measurement report or the RS Type 2 setting request message may include a measurement result for the set RS. The measurement result is managed according to the measurement object ID. It can be recognized.

If the BS has one or more RSs (eg, CSI-RS) having a QCL correlation with the corresponding RS (eg, NR-SS), the RS may set the RSs as RS Type 2 and request measurement Of course.

As shown in FIG. 14, the serving BS measures certain conditions (Condition_Type2) for a specific RS (Type 1, ie, Sync. Signal) for the purpose of setting a certain RS (Type 2, ie, CSI- It goes without saying that it is possible to set the result. It is also possible to set the conditions for sending the measurement report (MR). The Condition_Type2 may be the same as or different from the Condition_MR, and the detailed condition may be transmitted in the form of the existing LTE A1 to A6.

If the Condition_Type2 is satisfied, the UE may send a measurement report for RS Type 1 (RRC / MAC / PHY message) or a configuration request message for RS Type 2 (RRC / MAC / PHY message). The serving BS, which has received the report or request message from the MS, may set the RS Type 2 to the MS when possible, so that the MS can perform the measurement or report on the RS

In another embodiment, if the UE does not have such a Condition_Type2 and does not have a measurement setup for RS Type2 (i.e., CSI-RS), the UE may set some condition (Condition_Type2) according to its own condition, It is of course possible to request the setting for the RS Type 2.

In the case of RS Type 2, it may include neighboring cell information, and may include only serving cell information.

The UE shall attempt to measure the different RSs according to the set conditions, determine the condition to transmit the measurement report as set based on the measurement result, and report the measurement result when the condition is satisfied.

<< Figure 15. RS type 2 configuration based on UE signal, considering inter-cell interaction >>

Referring to FIG. 15, the serving BS sets information on RS Type 1 to the MS. The UE having received the information on the RS Type 1 basically performs continuous measurement on the serving cell and neighboring cells (RS Type 1, ie, Sync. Signal) for the corresponding RS. If any condition (Condition_Type2) is satisfied , It directly performs uplink transmission including a measurement result report for RS Type 1 or a setup request for RS Type 2.

15, the serving BS measures a certain condition (Condition_Type2) to a specific RS (Type1, ie, Sync. Signal) for the purpose of setting a certain RS (Type2, ie, CSI- It goes without saying that it is possible to set the result. It is also possible to set the conditions for sending the measurement report (MR). The Condition_Type2 may be the same as or different from the Condition_MR, and the detailed condition may be transmitted in the form of the existing LTE A1 to A6.

If the Condition_Type2 is satisfied, the UE may send a measurement report for RS Type 1 (RRC / MAC / PHY message) or a configuration request message for RS Type 2 (RRC / MAC / PHY message).

The measurement report or the RS Type 2 setting request message may include a measurement result for the set RS. The measurement result is managed according to the measurement object ID. It can be recognized.

If the BS has one or more RSs (eg, CSI-RS) having a QCL correlation with the corresponding RS (eg, NR-SS), the RS may set the RSs as RS Type 2 and request measurement Of course.

The serving BS, which has received the report or request message from the MS, may set the RS Type 2 to the MS when possible, so that the MS can perform the measurement or report on the RS

In another embodiment, if the UE does not have such a Condition_Type2 and does not have a measurement setup for RS Type2 (i.e., CSI-RS), the UE may set some condition (Condition_Type2) according to its own condition, It is of course possible to request the setting for the RS Type 2.

The measurement report or the RS Type 2 setting request message may include a measurement result for the set RS. The measurement result is managed according to the measurement object ID. It can be recognized.

If the BS has one or more RSs (eg, CSI-RS) having a QCL correlation with the corresponding RS (eg, NR-SS), the RS may set the RSs as RS Type 2 and request measurement Of course.

In this way, the serving BS, which has received the uplink signal transmission as a result of the condition Condition_Type2 set by the terminal, directly sets the RS Type 2 of the adjacent specific base station (or base stations) to the corresponding base station, (Via the X2 interface, or via the internet network, or via any wired back-haul link). The RS Type 2 setting request signal transmitted from the serving BS to the neighbor BS includes resource information (frequency, time, antenna, beam information, offset, etc.), terminal information (terminal ID, Time, antenna, beam information, offset, etc.), and serving cell information (serving cell ID, frequency, time, antenna, beam information, offset, etc.).

The neighboring base station, which has requested the RS type 2 setting from the serving base station, may set the corresponding RS to the corresponding terminal if possible and may transmit the setting information to the serving base station. The setting information includes resource information (frequency, time, antenna, beam information, offset, etc.), terminal information (terminal ID, terminal use frequency, time, antenna, beam information, offset, etc.) (Cell ID, used frequency, time, antenna, beam information, offset, etc.), and the like.

The serving BS receiving the configuration information of the RS Type 2 from the target BS may set the RS Type 2 of the serving BS and the target BS to the MS.

The UE attempts to measure the different RSs of different cells according to the set up condition, checks the condition to transmit the measurement report as set based on the measurement result, and reports the measurement result when the condition is satisfied.

<< Figure 16. RS Type 2 configuration based on direct UE request / reply >>

Referring to FIG. 16, the serving BS sets information on RS Type 1 to the MS. The UE having received the information on the RS Type 1 basically performs continuous measurement on the serving cell and neighboring cells (RS Type 1, ie, Sync. Signal) for the corresponding RS. If any condition (Condition_Type2) is satisfied , The uplink transmission including the RS Type 2 setting request is performed to the serving base station and the target base stations.

16, the serving BS measures a certain condition (Condition_Type2) for a specific RS (Type 1, ie, Sync. Signal) for the purpose of setting a certain RS (Type 2, ie, CSI- It goes without saying that it is possible to set the result. It is also possible to set the conditions for sending the measurement report (MR). The Condition_Type2 may be the same as or different from the Condition_MR, and the detailed condition may be transmitted in the form of the existing LTE A1 to A6.

If the Condition_Type2 is satisfied, the UE may send a measurement report for RS Type 1 (RRC / MAC / PHY message) or a configuration request message for RS Type 2 (RRC / MAC / PHY message). The serving BS, which has received the report or request message from the MS, may set the RS Type 2 to the MS when possible, so that the MS can perform the measurement or report on the RS

In another embodiment, if the UE does not have such a Condition_Type2 and does not have a measurement setup for RS Type2 (i.e., CSI-RS), the UE may set some condition (Condition_Type2) according to its own condition, It is of course possible to request the setting for the RS Type 2.

In this way, the serving BS, which has received the uplink signal transmission as a result of the condition Condition_Type2 set by the terminal, directly sets the RS Type 2 of the adjacent specific base station (or base stations) to the corresponding base station, (Via the X2 interface, or via the internet network, or via any wired back-haul link) to the terminal. The RS Type 2 setting request signal transmitted from the serving BS to the neighbor BS includes resource information (frequency, time, antenna, beam information, offset, etc.), terminal information (terminal ID, Time, antenna, beam information, offset, etc.), and serving cell information (serving cell ID, frequency, time, antenna, beam information, offset, etc.).

In addition, if the neighbor base station having received the uplink signal transmission as a result of the condition Condition_Type2 set by the terminal needs to also set the RS Type 2 of the adjacent specific base station (or base stations) to the corresponding terminal, (Frequency, time, antenna, beam, etc.) that can set the RS Type 2 using the downlink transmission (Msg2 or Msg4) that the base station can transmit in the RACH transmission procedure or other downlink resources that can be transmitted to the terminal (Serving ID, frequency, time, antenna, beam information, offset, etc.), and the like May also be transmitted.

The serving BS receiving the configuration information of the RS Type 2 from the target BS may set the RS Type 2 of the serving BS and the target BS to the MS.

The UE attempts to measure the different RSs of different cells according to the set up condition, checks the condition to transmit the measurement report as set based on the measurement result, and reports the measurement result when the condition is satisfied.

<< Figure 17. RS Type 2 configuration based on direct UE request and reply from serving cell >>

Referring to FIG. 17, the serving BS sets information on RS Type 1 to the MS. The UE having received the information on the RS Type 1 basically performs continuous measurement on the serving cell and neighboring cells (RS Type 1, ie, Sync. Signal) for the corresponding RS. If any condition (Condition_Type2) is satisfied , The uplink transmission including the RS Type 2 setting request is performed to the serving base station and the target base stations.

As shown in FIG. 17, the serving BS measures a certain condition (Condition_Type2) of a specific RS (Type1, ie, Sync. Signal) for the purpose of setting a certain RS (Type2, ie, CSI- It goes without saying that it is possible to set the result. It is also possible to set the conditions for sending the measurement report (MR). The Condition_Type2 may be the same as or different from the Condition_MR, and the detailed condition may be transmitted in the form of the existing LTE A1 to A6.

If the Condition_Type2 is satisfied, the UE may send a measurement report for RS Type 1 (RRC / MAC / PHY message) or a configuration request message for RS Type 2 (RRC / MAC / PHY message). The serving BS or the neighbor BS receiving the report or request message may set the RS Type 2 to the corresponding MS when possible so that the MS can perform the measurement or report on the RS

Here, the UE may send a measurement report for RS Type 1 (RRC / MAC / PHY message) or a setup request message for RS Type 2 (RRC / MAC / PHY message) to the serving BS. Also, the UE can transmit RS Type 2 setting request information including the pre-set RS measurement information, for example, SS beam / block / burst / burst set ID, received from the neighbor base station. The RS Type 2 request information of the UE to the neighbor base station may be transmitted using a random access procedure and may be transmitted using any uplink channel that can be transmitted by any adjacent network terminal.

In another embodiment, if the UE does not have such a Condition_Type2 and does not have a measurement setup for RS Type2 (i.e., CSI-RS), the UE may set some condition (Condition_Type2) according to its own condition, It is also possible to transmit the measurement report or the RS Type 2 setup request to the serving BS or the neighbor BS.

In this way, the serving BS, which has received the uplink signal transmission as a result of the condition Condition_Type2 set by the terminal, directly sets the RS Type 2 of the adjacent specific base station (or base stations) to the corresponding base station, (Via the X2 interface, or via the internet network, or via any wired back-haul link). The RS Type 2 setting request signal transmitted from the serving BS to the neighbor BS includes resource information (frequency, time, antenna, beam information, offset, etc.), terminal information (terminal ID, Time, antenna, beam information, offset, etc.), and serving cell information (serving cell ID, frequency, time, antenna, beam information, offset, etc.).

In addition, if the neighbor base station having received the uplink signal transmission as a result of the condition Condition_Type2 set by the terminal needs to set the RS Type 2 of the adjacent specific base station (or base stations) to the corresponding terminal, You can provide the RS Type 2 configuration directly to the base station (via the X2 interface, or via the internet network, or via any wired back-haul link). The RS Type 2 setup request signal transmitted from the neighbor base station to the serving base station includes resource information (frequency, time, antenna, beam information, offset, etc.), terminal information (terminal ID, Time, antenna, beam information, offset, etc.), and serving cell information (serving cell ID, frequency, time, antenna, beam information, offset, etc.).

The neighboring base station, which has requested the RS type 2 setting from the serving base station, may set the corresponding RS to the corresponding terminal if possible and may transmit the setting information to the serving base station. The setting information includes resource information (frequency, time, antenna, beam information, offset, etc.), terminal information (terminal ID, terminal use frequency, time, antenna, beam information, offset, etc.) (Cell ID, used frequency, time, antenna, beam information, offset, etc.), and the like.

The serving BS receiving the configuration information of the RS Type 2 from the target BS may set the RS Type 2 of the serving BS and the target BS to the MS.

The UE attempts to measure the different RSs of different cells according to the set up condition, checks the condition to transmit the measurement report as set based on the measurement result, and reports the measurement result when the condition is satisfied.

Of course, different CSI-RSs with the same or different characteristics, resources, beams, and purposes may be configured for multiple users.

<Measurement report triggering events using measurements from different RS>

 [event-NR1]

[event NR2]

The following tables are intended to illustrate the description based on the event (NR3), and it is desirable that the following tables are understood to be connected to each other.

[event NR3]

The following tables are intended to illustrate the description based on the event (NR4), and it is desirable that the following tables are understood to be connected to each other.

[event NR4]

The following tables are intended to illustrate the description based on the event (NR5), and it is desirable that the following tables are understood to be connected to each other.

[event NR5]

The following tables are intended to illustrate the description based on event (NR6), and it is preferable that the following tables are understood to be connected to each other.

[event NR6]

The following tables are intended to illustrate the description based on the event (NR7), and it is preferable that the following tables are understood to be connected to each other.

[event NR7]

<Example a - Beam Failure detection by L1 / L2 / L3>

The UE can measure the degradation of the beam in use and trigger the beam change procedure to change it to another beam using the measurement result. The procedure for determining the performance degradation of the beam that is in use at this time is called the Beam Failure Detection procedure, and this procedure is possible in the following manner.

Where the beam can be any beam (base station beam, terminal beam, or pair of base station beam and terminal beam) that the terminal and base station are using, or any beam group that the terminal and base station have explicitly (or implicitly) or a set of beams.

In this case, the beam may be a physical antenna setting and may be a measurement unit of a terminal (for example, SS block, SS burst, SS burst set, CSI-RS block, CSI-RS burst, CSI-RS burst set).

1. L1 detection

- If the beam (s) measured by the physical layer satisfy Condition 1,

- The physical layer sends a corresponding indication to the upper layer for later operation

- The upper layer starts beam recovery procedure after receiving indication

2. L2 detection with L1 indication

- If the beam (s) measured by the physical layer satisfy Condition 1, transmit the indication to the upper layer

- The L2 layer receives one or more indications from the physical layer and, if the reception of the indications satisfies Condition 2, detects beam failure and / or Beam recovery triggering

- L2 layer starts beam recovery procedure

3. L3 detection with L1 indication

- If the beam (s) measured by the physical layer satisfy Condition 1, transmit the indication to the upper layer

- The L3 layer receives one or more indications from the physical layer and, if the reception of the indications satisfies Condition 2, the beam failure and / or beam recovery triggering judgment

- L3 layer starts beam recovery procedure

The Condition 1 may be as follows:

- Beam (s) Measure <Threshold1

- Estimated DL signal reception error probability> N1%

- Beam (s) Measure <Threshold1 (AND) Any One Beam Measure> Threshold 2

- Any set 1 of beams measured < RTI ID = 0.0 &gt; &lt; Threshold1 &lt; / RTI &

The Condition 2 can be as follows:

- Receive consecutive N2 indications

- Reception of N3 or more indications within a certain time (timer2)

- Any one beam measurement> Threshold 2

- The measured value of any beam in any set 2 of beams that was previously promised (or configured from the base station) to the base station> Threshold2

- When any timer 1 triggered immediately after the condition 1 is satisfied is expired

: The timer1 may be a value set in the terminal implementation

: The timer 1 may be a value configured by the base station

: The timer1 may be canceled if it receives any indication (ie, In-sync-indicator) from the lower layer.

: The timer 1 may be canceled when receiving an indication (i.e., RLF triggering indication, RLF declaration indication) from the upper layer.

<Example b1 - level cells and sets>

The following embodiment is another embodiment in which CSI-RS resource sets in a cell all have the same subcarrier spacing, CSI-RS transmission period, and CSI-RS transmission BW and CSI-RS reception BW.

The following [Table 1] is according to the present embodiment, and the following [Table 1aa] and [Table 1ab] are added to the description of each field included in [Table 1]. [Table 1aa] and [Table 1ab] are preferably understood to be mutually connected.

In this case, the CSI-RSs are set for each CSI-RS resource set, and have the same CSI-RS setting offset, CSI-RS scrambling ID, sequence generation setting, repetition and density for each CSI- The antenna ports, the resource element mapping pattern, the QCL information, and the bandwidth part information of the CSI-RS resources in the CSI-RS resource set can be provided to the terminal in the same single value or bit-map format of different values in the CSI- .

[Table 1]

[Table 1aa]

[Table 1ab]

The cell is an example of setting up the UE to transmit CSI-RS resource sets having the same period for RRM and handover of an unspecified number of UEs.

In addition, the CSI-RS transmission period may be set for each CSI-RS resource set, not for each cell, and may be set in the CSI-ResourceSet-RRM. In this case, different CSI-RS resource sets transmitted in the corresponding cell may be transmitted with different periods, and the UE may receive different CSI-RS resource sets at different periods accordingly.

The cell can transmit CSI-RSs having the same transmission slot offset (slotConfigOffset) in the same CSI-RS resource set, and these transmission slot offset values can have different values for different CSI-RS resource sets in the cell have. Using this, if the CSI-RS resource sets have different CSI-RS transmission slot offsets for each transmission / reception antenna bundle, for example, a transmission reception point (TRP, TRxP) existing at different physical locations, And the UE can receive the CSI-RS resource sets by applying the same reception period as that of the different reception slot offsets. In addition, a cell may have the same periodicity with different transmission slot offsets between CSI-RS resource sets if CSI-RS resource sets have different frequency characteristics, for example, center frequency, frequency bandwidth, carrier frequency, And may transmit CSI-RS resources and allow the terminal to receive the CSI-RS resources.

In addition, the transmission slot offset may be set in the CSI-ConfigCell in units of cells, not in the CSI-RS resource set unit. In this case, the CSI-RS resources and the CSI-RS resource sets set and transmitted within the corresponding cell all have the same transmission slot offset. Accordingly, the UE transmits CSI -RS &lt; / RTI &gt;

If the repetition indicator is on, the network shall set the CSI-RS resources in the corresponding set to transmit signals using the same antenna pattern and the same beam, and the terminal shall change the receive beam of the terminal in this CSI- The received signal strength of the corresponding CSI-RS beam for different reception beams can be measured and the channel quality can be measured. The indicator may be implicitly used as an indicator for instructing the CSI-RS resource set ID (CSI-RS-ResourceSetId-RRM) to be fed back when the UE feeds back measurement information to the base station.

If the repetition indicator is off, the network shall set the CSI-RS resources in the corresponding CSI-RS resource set to transmit signals using different antenna patterns and different beams. The reception beam of the UE is fixedly received, and the received signal strength of the corresponding CSI-RS beam for the different transmission beams of the base station with respect to the reception beam is measured and the channel quality can be measured. The indicator indicates a resource ID, for example, a bitmap sequence of an RE mapping pattern in which a resource for feedback is set, as well as a CSI-RS resource set ID (CSI-RS-ResourceSetId-RRM) , the order of the bitmaps of the antenna ports, and so on.

It should be noted that the repetition indicator may be set in the CSI-ConfigCell, not in the CSI-RS resource set unit but in the cell unit. In this case, it means that all the CSI-RS resources and the CSI-RS resource sets set and transmitted within the cell are transmitted along the same repetition indicator. If repetition is on and there are multiple CSI-RS resource sets, it is assumed that signals will be transmitted using the same antenna pattern and the same beam in each CSI-RS resource set, and different antenna patterns, It may be implicitly set to transmit signals using different beams. In this case, the UE changes the reception beam for different CSI-RS resources in one CSI-RS resource set, and can receive the CSI-RSs transmitted by the corresponding cell. In addition, if repetition is on and multiple CSI-RS resource sets are set, it is set that all CSI-RS resource sets and CSI-RS resources in the sets will transmit signals using the same antenna pattern and the same analog beam It may be an indicator. In this case, the UE changes the reception beam according to different CSI-RS resources in all the CSI-RS resource sets, and can receive the CSI-RSs transmitted by the corresponding cell.

The nrofRepeateadCSI-RS-Resources is the number of repetition CSI-RS resources that tells how many CSI-RS resources are to be configured in the same CSI-RS resource set whether they are transmitted using the same antenna configuration and the same beam. It goes without saying that the parameter may be set and transmitted only when repetition is on.

Also, it is needless to say that the nrofRepeateadCSI-RS-Resources may be set in the CSI-ConfigCell in units of cells, not in the CSI-RS resource set unit. In this case, it may be determined how many CSI-RS resources existing in the CSI-RS resource sets set up and transmitted within the cell are bundled and transmitted using the same antenna configuration and the same beam.

The nrofAntennaPortsBitmap is the number of antenna ports or configuration information used by the CSI-RS resources transmitted in the corresponding CSI-RS resource set. If all the resources in the CSI-RS resource set use the same antenna port, Of course, if the resources in the set use different antenna ports, they may be transmitted in bit map format with different information.

In addition, the nrofAntennaPortsBitmap may be set in the CSI-ConfigCell, not in the CSI-RS resource set unit but in the cell unit. In this case, the number of antenna ports or setting information used by the CSI-RS resource sets and CSI-RS resources set and transmitted within the corresponding cell, or the CSI-RS resources existing within each CSI-RS resource set, And the CSI-RS resources in the CSI-RS resource set use the same antenna port. However, when different antenna ports are used between the CSI-RS resource sets, The CSI-RS resource in the CSI-RS resource set may be transmitted using a different antenna port, or may be transmitted in a form of a bit map of different information on the antenna port set by the set without the indicator But may be transmitted in a bit map format of different antenna port information.

The resourceElementMappingPatternBitmap is a resource element setting information used by the CSI-RS resources transmitted in the corresponding CSI-RS resource set. If all the resources in the CSI-RS resource set use the same resource element mapping pattern, And the resources in the CSI-RS resource set may be transmitted in the bit map format of different information when different resource element mapping patterns are used.

Also, it goes without saying that the resourceElementMappingPatternBitmap may be set in the CSI-ConfigCell in units of cells, not in the CSI-RS resource set unit. In this case, resource element mapping pattern information or configuration information used by the CSI-RS resource sets or CSI-RS resource resources set in the corresponding cell or transmitted in each CSI-RS resource set, resource element mapping pattern information, the CSI-RS resources in the CSI-RS resource set use the same resource element mapping pattern, but different resource elements are used in the CSI-RS resource sets. In the case of using the mapping pattern, the CSI-RS resource set may include an indicator indicating such a setting, or may be transmitted in a bit map format of different information on the resource element mapping pattern set by the set without an indicator. If RS resources use different resource element mapping patterns, these different REs it may be transmitted in a bit map format of mapping pattern information.

The qcl_SSB_info_Bitmap is the information used by the CSI-RS resources transmitted in the corresponding CSI-RS resource set to indicate the QCL association with the synchronization signal block related to the time, frequency, and spatial QCLs. The id or QCL ID Or a transmission config ID. If all the resources in the CSI-RS resource set are in QCL association with the same SS block, they may be set as one information and transmitted. If resources in the CSI-RS resource set are in QCL association with different SS blocks, And may be transmitted in a bit map format of other information.

It should be noted that the qcl_SSB_info_Bitmap may be set in the CSI-ConfigCell on a cell-by-cell basis, not on a CSI-RS resource set basis. In this case, the CSI-RS resource sets set in the cell and transmitted, or the CSI-RS resources existing in each CSI-RS resource set, are information on the sync signal in the QCL association, and all the resources in the cell are the same The CSI-RS resources in the CSI-RS resource set are QCL-related to the same SS block, but the CSI-RS resource sets are different SS block and a QCL association, it is possible to transmit the bitmap format of the different information about the SS block included in the QCL association by including the indicator indicating the setting or the CSI-RS resource If the CSI-RS resources in the set are in QCL association with different SS blocks, they may be transmitted in bit map format of these different SS block information. Of course it is.

The densityBitmap is the density of the RE / port / PRB of the CSI-RS resources transmitted in the corresponding CSI-RS resource set. When all the resources in the CSI-RS resource set use the same antenna port, And may be transmitted in a bitmap format of different information when the resources in the CSI-RS resource set use different densities.

It should be noted that the densityBitmap may be set in the CSI-ConfigCell, not in the CSI-RS resource set unit but in the cell unit. In this case, density information used by CSI-RS resource sets or CSI-RS resources existing in each cell and transmitted and received in the corresponding cell, and all resources in the cell use the same density information The CSI-RS resources in the CSI-RS resource set use the density, but when using different densities between the CSI-RS resource sets, the CSI-RS resource set includes an indicator indicating the setting, The CSI-RS resources in the CSI-RS resource set may be transmitted in a bit map of different information about the density set by the set, and if the CSI-RS resources in the CSI-RS resource set use different densities, Of course, be transmitted in the form of a message.

The bandwidthpartsBitmap is a parameter that contains the bandwidth part id, bandwidth, and frequency of the CSI-RS resources transmitted in the corresponding CSI-RS resource set. When all the resources in the CSI-RS resource set use the same bandwidth part, And may be transmitted in a bit map format of different information when resources in the CSI-RS resource set use different bandwidth parts.

It should be noted that the bandwidthpartsBitmap may be set in the CSI-ConfigCell, not in the CSI-RS resource set unit but in the cell unit. In this case, it is the bandwidthparts information used by the CSI-RS resource sets or the CSI-RS resources existing in the corresponding cell or within the CSI-RS resource set. If all the resources in the cell use the same bandwidthparts, The CSI-RS resources in the CSI-RS resource set use the bandwidthparts, but when different bandwidthparts are used between the CSI-RS resource sets, the CSI-RS resource set includes the indicator indicating the setting, In case that CSI-RS resources in different CSI-RS resource sets use different bandwidthparts, the bitmap format of the different bandwidthparts information may be transmitted. As shown in FIG.

The csi-rs-TransmissionBW is a value of a bandwidth that indicates to the UE how far different CSI-RSs transmitted by the cell are transmitted over a wide frequency band. The csi-rs-TransmissionBW is a reference point at a frequency band and may be an absolute value indicating a center point (ARFCN or center frequency or carrier ID) and a bandwidth in a frequency band, and may be an absolute value indicating a frequency band It is a matter of course that it may be a numerical value indicating the extent of the.

Also, the csi-rs-TransmissionBW may be set for each CSI-RS resource set, not for each cell, and may be set in the CSI-ResourceSet-RRM. In this case, different CSI-RS resource sets transmitted in the corresponding cell may be transmitted with different transmission frequency bandwidths.

The csi-rs-MeasurementBW is a value that indicates to the UE which frequency bandwidth size the UE should receive using the CSI-RS transmitted from the cell. The csi-rs-MeasurementBW is a reference point at a frequency band And may be an absolute value indicating a center point (ARFCN, center frequency or carrier ID) and a bandwidth in a frequency band, and may be an absolute value indicating a frequency band Of course, it can also be a number that tells the width.

Also, when the csi-rs-MeasurementBW is a numerical value that not only indicates the size of a frequency band in which a UE measures a CSI-RS, the corresponding value is a maximum measurable frequency bandwidth Of course.

Also, if the csi-rs-MeasurementBW is a value that not only indicates a size of a frequency band for which a UE measures a CSI-RS and a value smaller than the csi-rs-TransmissionBW, The network may implicitly indicate to the csi-rs-TransmissionBW to be transmitted to use the frequency band of the csi-rs-MeasurementBW size. In this case, when the operating bandwidth of the UE belongs to the csi-rs-TransmissionBW, the UE measures the CSI-RS of the target cell by the csi-rs-MeasurementBW size within its operating bandwidth to derive the cell measurement value The UE may select a frequency band of the csi-rs-MeasurementBW size having the best performance for all the frequency bands of the target cell that can be measured using a gap, and then transmit the csi-rs-MeasurementBW frequency band The CSI-RS of the target cell may be measured to derive the cell measurement value. Alternatively, if the UE can know the bandwidth part information of the target cell through the bandwidthparts bitmap or the like, the UE selects a bandwidth part that is the same as or closest to the active bandwidth part of the serving cell to which the CSI- RS may be measured by the corresponding csi-rs-MeasurementBW frequency band to derive a cell measurement value.

In addition, the csi-rs-MeasurementBW may be set for each CSI-RS resource set, not for each cell, and may be set in the CSI-ResourceSet-RRM. In this case, the UE may receive and measure the CSI-RS with different reception frequency bandwidths for different CSI-RS resource sets and derive cell measurement values.

<Example b2 - level cells and resources>

The following embodiment is another embodiment in which CSI-RS resources in a cell all have the same CSI-RS transmission period, the same CSI-RS setup offset, subcarrier spacing, and CSI-RS transmission BW and CSI-RS reception BW.

The following [Table 2] is according to the present embodiment, and the following [Table 2aa] and [Table 2ab] are additions to the description of each field included in [Table 2]. The description of each field included in [Table 2] is added. [Table 2aa] and [Table 2ab] are preferably understood to be mutually connected.

In this case, the CSI-RSs are set for each CSI-RS resource, and the CSI-RS scrambling ID, sequence generation setting, repetition, density, antenna ports, resource element mapping pattern, QCL information, .

[Table 2]

[Table 2aa]

[Table 2ab]

The cell is an example of setting the CSI-RS resources having the same period to the UE for RRM and handover of an unspecified number of UEs.

The CSI-RS transmission period may be set for each CSI-RS resource, not for each cell, and may be set in the CSI-Resource-RRM. In this case, different CSI-RS resources transmitted in the corresponding cell may be transmitted with different periods, and the UE may receive different CSI-RS resources at different periods accordingly.

The cell may transmit CSI-RS resources having different transmission slot offsets (slotConfigOffset) for each CSI-RS resource. The UE can thus receive different CSI-RS resources at different transmission slot offsets.

It should be noted that the transmission slot offset may be set in the CSI-ConfigCell, not in the CSI-RS resource unit but in the cell unit. In this case, all the CSI-RS resources set and transmitted within the corresponding cell have the same transmission slot offset, and the UE can thereby receive the CSI-RSs transmitted by the corresponding cell with the same transmission slot offset .

If the repetition indicator is on, the network determines that the CSI-RS resources in the corresponding cell will transmit signals using the same antenna pattern and the same beam. The terminal changes the reception beam of the terminal in these cells, The received signal strength of the corresponding CSI-RS beam to the beam can be measured and the channel quality can be measured. The indicator may be implicitly used as an indicator indicating that the terminal does not need to feed back measurement information to the base station.

If the repetition indicator is off, the network determines that the CSI-RS resources in the corresponding cell will transmit signals using different antenna patterns, different beams, and the terminal fixes the reception beam of the terminal in these cells to receive And measure the received signal strength of the corresponding CSI-RS beam for different transmission beams of the base station with respect to the reception beam and measure the channel quality. The indicator directly indicates the order in which the CSI-RS resource ID (CSI-RS-ResourceId-RRM) or the implicit resource ID, for example, the CSI-RE resource is set in the case where the UE implicitly feeds the measurement information to the base station, But may also be used as an indicator for instructing to do so.

It should be noted that the repetition indicator may be set in the CSI-Resource-RRM in units of CSI-RS resources instead of cell units. In this case, the CSI-RS resource including the corresponding repetition indicator means that the CSI-RS resource is transmitted using the same antenna configuration and beam as the CSI-RS resource set up immediately before.

nrofRepeateadCSI-RS-Resources is the number of repetition CSI-RS resources that tells how many CSI-RS resources are to be configured in the same cell in the same antenna configuration, the same beam. It goes without saying that the parameter may be set and transmitted only when repetition is on.

nrofAntennaPorts is the number of antenna ports or setting information used by the CSI-RS resources transmitted in the cell.

It is needless to say that the nrofAntennaPorts may be set in the CSI-ConfigCell, not in the CSI-RS resource unit but in the cell unit. In this case, the number of antenna ports or setting information used by the CSI-RS resources set and transmitted in the corresponding cell. If all the resources in the cell use the same antenna port, they may be set as one information and transmitted. In the case where -RS resources use different antenna ports, it may be transmitted in a bit map format of different information about the antenna port set for each CSI-RS resource without including an indicator indicating such setting.

resourceElementMappingPattern is the setting information of the resource element used by the corresponding CSI-RS resource.

It should be noted that the resourceElementMappingPattern may be set in the CSI-ConfigCell, not in the CSI-RS resource unit but in the cell unit. In this case, the resourceElementMappingPattern is setting information of the resource element used by the CSI-RS resources transmitted in the corresponding cell. If all the resources in the cell use the same resource element mapping pattern, It goes without saying that resources in a cell may be transmitted in a bitmap format of different information when different resource element mapping patterns are used.

qcl_SSB_info is the information used to notify the QCL association with the synchronization signal block related to the time, frequency, and spatial QCL of the corresponding CSI-RS resource. The id, QCL ID, or transmission config ID of the corresponding SS block can be used .

It is needless to say that the qcl_SSB_info may be set in the CSI-ConfigCell, not in the CSI-RS resource unit but in the cell unit. In this case, each CSI-RS resource set and transmitted in the corresponding cell is information on a Sync Signal having a QCL association, and if all the resources in the cell are in the QCL association with the same SS block, If the CSI-RS resources are in QCL association with different SS blocks, it may be transmitted in the form of bit map of different SS block information.

The densityBitmap is the RE / port / PRB density of the corresponding CSI-RS resources.

It should be noted that the densityBitmap may be set in the CSI-ConfigCell, not in the CSI-RS resource unit but in the cell unit. In this case, density information used by the CSI-RS resources set up and transmitted in the cell, and when all the resources in the cell use the same density information, the CSI-RS resources may be set as one information and transmitted. Of course, when different densities are used, they may be transmitted in a bit map format of different density information.

bandwidthparts is a parameter that contains information such as bandwidth part id, bandwidth, and frequency of CSI-RS resource.

It should be noted that the bandwidthparts may be set in the CSI-ConfigCell, not in the CSI-RS resource unit but in the cell unit. In this case, it is the bandwidthparts information used by the CSI-RS resources set up and transmitted in the corresponding cell. If all the resources in the cell use the same bandwidthparts, the CSI-RS resources may be set as one information and transmitted. Of course, if different bandwidthparts are used, these different bandwidthparts may be transmitted in bit map format.

The csi-rs-TransmissionBW is a value of a bandwidth that indicates to the UE how far different CSI-RSs transmitted by the cell are transmitted over a wide frequency band. The csi-rs-TransmissionBW is a reference point at a frequency band and may be an absolute value indicating a center point (ARFCN or center frequency or carrier ID) and a bandwidth in a frequency band, and may be an absolute value indicating a frequency band It is a matter of course that it may be a numerical value indicating the extent of the.

Also, the csi-rs-TransmissionBW may be set for each CSI-RS resource, not for each cell, and may be set in the CSI-Resource-RRM. In this case, different CSI-RS resources transmitted in the corresponding cell may be transmitted with different transmission frequency bandwidths.

The csi-rs-MeasurementBW is a value that indicates to the UE which frequency bandwidth size the UE should receive using the CSI-RS transmitted from the cell. The csi-rs-MeasurementBW is a reference point at a frequency band And may be an absolute value indicating a center point (ARFCN, center frequency or carrier ID) and a bandwidth in a frequency band, and may be an absolute value indicating a frequency band Of course, it can also be a number that tells the width.

Also, when the csi-rs-MeasurementBW is a numerical value that not only indicates the size of a frequency band in which a UE measures a CSI-RS, the corresponding value is a maximum measurable frequency bandwidth Of course.

Also, if the csi-rs-MeasurementBW is a value that not only indicates a size of a frequency band for which a UE measures a CSI-RS and a value smaller than the csi-rs-TransmissionBW, The network may implicitly indicate to the csi-rs-TransmissionBW to be transmitted to use the frequency band of the csi-rs-MeasurementBW size. In this case, when the operating bandwidth of the UE belongs to the csi-rs-TransmissionBW, the UE measures the CSI-RS of the target cell by the csi-rs-MeasurementBW size within its operating bandwidth to derive the cell measurement value The UE may select a frequency band of the csi-rs-MeasurementBW size having the best performance for all the frequency bands of the target cell that can be measured using a gap, and then transmit the csi-rs-MeasurementBW frequency band The CSI-RS of the target cell may be measured to derive the cell measurement value. Alternatively, if the UE can know the bandwidth part information of the target cell through the bandwidthparts bitmap or the like, the UE selects a bandwidth part that is the same as or closest to the active bandwidth part of the serving cell to which the CSI- RS may be measured by the corresponding csi-rs-MeasurementBW frequency band to derive a cell measurement value.

The csi-rs-MeasurementBW may be set for each CSI-RS resource, not for each cell, and may be set in the CSI-Resource-RRM. In this case, the UE may receive and measure the CSI-RS with different reception frequency bandwidths for different CSI-RS resources and derive cell measurement values.

<Example b3 - level sets and resources>

The following embodiment is another embodiment in which the CSI-RS resource sets all have the same CSI-RS transmission period, the same CSI-RS setup offset, subcarrier spacing, and CSI-RS transmission BW and CSI-RS reception BW.

The following [Table 3] is according to the present embodiment, and the following [Table 3aa] and [Table 3ab] are additions to the description of each field included in [Table 3]. [Table 3aa] and [Table 3ab] are preferably understood to be interconnected.

In this case, the CSI-RSs are set for each CSI-RS resource, and the CSI-RS scrambling ID, sequence generation setting, repetition, density, antenna ports, resource element mapping pattern, QCL information, .

[Table 3]

[Table 3aa]

[Table 3ab]

The CSI-RS resource set is an example of setting up the CSI-RS resources to transmit CSI-RS resources having the same period for RRM and handover of an unspecified number of UEs.

The CSI-RS transmission period may be set for each CSI-RS resource, not for the CSI-RS resource set, and may be set in the CSI-Resource-RRM. In this case, different CSI-RS resources transmitted in the corresponding CSI-RS resource set may be transmitted with different periods, and the terminals may receive different CSI-RS resources at different periods accordingly.

The CSI-RS resource set can transmit CSI-RS resources having a different slot slot offset (slotConfigOffset) for each CSI-RS resource. The UE can thus receive different CSI-RS resources at different transmission slot offsets.

It should be noted that the transmission slot offset may be set in the CSI-ResourceSet-RRM, not in the CSI-RS resource unit but in the CSI-RS resource set unit. In this case, all the CSI-RS resources set up and transmitted in the corresponding CSI-RS resource set have the same transmission slot offset, and the UE transmits to the corresponding CSI-RS resource set with the same transmission slot offset. CSI-RSs.

If the repetition indicator is on, the network shall set the CSI-RS resources in the corresponding CSI-RS resource set to transmit signals using the same antenna pattern and the same beam. It is possible to measure the received signal strength of the corresponding CSI-RS beam for different reception beams and measure the channel quality while changing the reception beam. The indicator may be implicitly used as an indicator indicating that the terminal does not need to feed back measurement information to the base station.

If the repetition indicator is off, the network shall set the CSI-RS resources in the corresponding CSI-RS resource set to transmit signals using different antenna patterns and different beams. The reception beam of the UE is fixedly received, and the received signal strength of the corresponding CSI-RS beam for the different transmission beams of the base station with respect to the reception beam is measured and the channel quality can be measured. The indicator directly indicates the order in which the CSI-RS resource ID (CSI-RS-ResourceId-RRM) or the implicit resource ID, for example, the CSI-RE resource is set in the case where the UE implicitly feeds the measurement information to the base station, But may also be used as an indicator for instructing to do so.

It should be noted that the repetition indicator may be set in the CSI-Resource-RRM in units of CSI-RS resources instead of in the CSI-RS resource set unit. In this case, the CSI-RS resource including the corresponding repetition indicator means that the CSI-RS resource is transmitted using the same antenna configuration and beam as the CSI-RS resource set up immediately before.

The nrofRepeateadCSI-RS-Resources is the number of repetition CSI-RS resources that tells how many CSI-RS resources are to be configured in the same CSI-RS resource set whether they are transmitted using the same antenna configuration and the same beam. It goes without saying that the parameter may be set and transmitted only when repetition is on.

nrofAntennaPorts is the number of antenna ports or configuration information used by the CSI-RS resource transmitted in the corresponding CSI-RS resource set.

It should be noted that the nrofAntennaPorts may be set in the CSI-ResourceSet-RRM, not in the CSI-RS resource unit but in the CSI-RS resource set unit. In this case, the number of antenna ports or setting information used by the CSI-RS resources set up and transmitted in the corresponding CSI-RS resource set. If all the resources in the CSI-RS resource set use the same antenna port, If the CSI-RS resources use different antenna ports, they may be transmitted in bit map format with different information about the antenna port set for each CSI-RS resource, Of course.

resourceElementMappingPattern is the setting information of the resource element used by the corresponding CSI-RS resource.

Also, it goes without saying that the resourceElementMappingPattern may be set in the CSI-ResourceSet-RRM in units of the CSI-RS resource set rather than the CSI-RS resource unit. In this case, the resourceElementMappingPattern is the resource element setting information used by the CSI-RS resources transmitted in the corresponding CSI-RS resource set, and when all the resources in the CSI-RS resource set use the same resource element mapping pattern, And may be transmitted in a bit map format of different information when resources in the CSI-RS resource set use different resource element mapping patterns.

qcl_SSB_info is the information used to notify the QCL association with the synchronization signal block related to the time, frequency, and spatial QCL of the corresponding CSI-RS resource. The id, QCL ID, or transmission config ID of the corresponding SS block can be used .

It is needless to say that the qcl_SSB_info may be set in the CSI-ResourceSet-RRM, not in the CSI-RS resource unit but in the CSI-RS resource set unit. In this case, each CSI-RS resource set and transmitted in the corresponding CSI-RS resource set is information on a sync signal in the QCL association, and all resources in the CSI-RS resource set are associated with the same SS block and QCL association And if the CSI-RS resources are in QCL association with different SS blocks, it may be transmitted in a bit map format of the different SS block information.

The densityBitmap is the RE / port / PRB density of the corresponding CSI-RS resources.

It should be noted that the densityBitmap may be set in the CSI-ResourceSet-RRM, not in the CSI-RS resource unit but in the CSI-RS resource set unit. In this case, density information used by CSI-RS resources set up and transmitted in the corresponding CSI-RS resource set, and when all the resources in the CSI-RS resource set use the same density information, one information is set and transmitted Of course, when CSI-RS resources use different densities, they may be transmitted in a bit map format of different density information.

bandwidthparts is a parameter that contains information such as bandwidth part id, bandwidth, and frequency of CSI-RS resource.

It is needless to say that the bandwidthparts may be set in the CSI-ResourceSet-RRM, not in the CSI-RS resource unit but in the CSI-RS resource set unit. In this case, it is the bandwidthparts information used by the CSI-RS resources set up and transmitted in the corresponding CSI-RS resource set. If all the resources in the CSI-RS resource set use the same bandwidthparts, Of course, if CSI-RS resources use different bandwidthparts, they may be transmitted in a bit map format of different bandwidthparts information.

The csi-rs-TransmissionBW is a value of a bandwidth indicating the extent to which different CSI-RSs transmitted by the CSI-RS resource set are transmitted over a wide range in a frequency band, : an absolute number indicating a low or high frequency and a bandwidth, or an absolute value indicating a center point (ARFCN or center frequency or carrier ID or carrier ID) in a frequency band and a bandwidth , But it may also be a numerical value that simply indicates the width of the frequency band.

Also, it should be noted that the csi-rs-TransmissionBW may be set for each CSI-RS resource rather than for each CSI-RS resource set and set in the CSI-Resource-RRM. In this case, different CSI-RS resources transmitted in the corresponding CSI-RS resource set may be transmitted with different transmission frequency bandwidths.

The csi-rs-MeasurementBW is a number that indicates to the UE which frequency bandwidth size the UE should receive using the CSI-RS transmitted by the CSI-RS resource set. The csi-rs-MeasurementBW is a reference point in the frequency band. or an absolute value indicating a center point (ARFCN or center frequency or carrier number or carrier ID) in a frequency band and an absolute value indicating a bandwidth, But it may also be a numerical value simply indicating the width of the frequency band.

Also, when the csi-rs-MeasurementBW is a numerical value that not only indicates the size of a frequency band in which a UE measures a CSI-RS, the corresponding value is a maximum measurable frequency bandwidth Of course.

Also, if the csi-rs-MeasurementBW is a value that not only indicates a size of a frequency band for which a UE measures the CSI-RS and a value smaller than the csi-rs-TransmissionBW, The network may implicitly indicate that the measurement is to be performed using a frequency band of the csi-rs-MeasurementBW size within the csi-rs-TransmissionBW transmitted by the CSI-RS resource set. In this case, if the operating bandwidth of the UE belongs to the csi-rs-TransmissionBW, the UE measures the CSI-RS of the target CSI-RS resource set by the csi-rs-MeasurementBW size within its operating bandwidth, RS resource measurement value. Alternatively, the UE can measure a frequency of a csi-rs-MeasurementBW size having the best performance for all frequency bands of a target CSI-RS resource set measurable using a gap or the like. The CSI-RS resource set can be measured by measuring the CSI-RS of the target CSI-RS resource set in the corresponding csi-rs-MeasurementBW frequency band by selecting the band. Alternatively, when the UE can know the bandwidth part information of the target CSI-RS resource set through the bandwidthpartsBitmap or the like, the UE selects a bandwidth part which is at the same or nearest frequency position as the active bandwidth part of the serving CSI-RS resource set to which the UE belongs It is needless to say that the CSI-RS resource set measurement value can be derived by measuring the CSI-RS transmitted in the corresponding bandwidth part by the corresponding csi-rs-MeasurementBW frequency band.

It should be noted that the csi-rs-MeasurementBW may be set for each CSI-RS resource rather than for each CSI-RS resource set and set in the CSI-Resource-RRM. In this case, the UE may receive and measure the CSI-RS with different reception frequency bandwidths for different CSI-RS resources and derive CSI-RS resource set measurement values.

<Example c - level cells, sets, and resources>

The following embodiment is another embodiment in which CSI-RS resources in a cell all have the same CSI-RS transmission period, subcarrier spacing, and CSI-RS transmission BW and CSI-RS reception BW.

The following Table 4 is according to the present embodiment, and the following Table 4aa and Table 4ab are the descriptions of the respective fields included in Table 4. [Table 4aa] and [Table 4ab] are preferably understood to be mutually connected.

There are CSI-RS resource sets in a cell, and CSI-RS resources in one resource set can have the same CSI-RS setting offset, RS scrambling ID, sequence generation setting, repetition, density and bandwidth part information. In this case, the CSI-RSs are configured for each CSI-RS resource, and have CSI-antenna ports, resource element mapping patterns, and QCL information for each CSI-RS resource.

[Table 4]

[Table 4aa]

[Table 4ab]

The cell is an example of setting up the UE to transmit CSI-RS resource sets having the same period for RRM and handover of an unspecified number of UEs.

In addition, the CSI-RS transmission period may be set for each CSI-RS resource set, not for each cell, and may be set in the CSI-ResourceSet-RRM. In this case, different CSI-RS resource sets transmitted in the corresponding cell may be transmitted with different periods, and the UE may receive different CSI-RS resource sets at different periods accordingly.

The CSI-RS transmission period may be set for each CSI-RS resource, not for each cell, and may be set in the CSI-Resource-RRM. In this case, different CSI-RS resources transmitted in the corresponding cell may be transmitted with different periods, and the UE may receive different CSI-RS resources at different periods accordingly.

The cell can transmit CSI-RSs having the same transmission slot offset (slotConfigOffset) in the same CSI-RS resource set, and these transmission slot offset values can have different values for different CSI-RS resource sets in the cell have. Using this, if the CSI-RS resource sets have different CSI-RS transmission slot offsets for each transmission / reception antenna bundle, for example, a transmission reception point (TRP, TRxP) existing at different physical locations, And the UE can receive the CSI-RS resource sets by applying the same reception period as that of the different reception slot offsets. In addition, a cell may have the same periodicity with different transmission slot offsets between CSI-RS resource sets if CSI-RS resource sets have different frequency characteristics, for example, center frequency, frequency bandwidth, carrier frequency, And may transmit CSI-RS resources and allow the terminal to receive the CSI-RS resources.

In addition, the transmission slot offset may be set in the CSI-ConfigCell in units of cells, not in the CSI-RS resource set unit. In this case, the CSI-RS resources and the CSI-RS resource sets set and transmitted within the corresponding cell all have the same transmission slot offset. Accordingly, the UE transmits CSI -RS &lt; / RTI &gt;

In addition, the cell may transmit CSI-RS resources having different transmission slot offsets (slotConfigOffset) for each CSI-RS resource. The UE can thus receive different CSI-RS resources at different transmission slot offsets.

If the repetition indicator is on, the network shall set the CSI-RS resources in the corresponding set to transmit signals using the same antenna pattern and the same beam, and the terminal shall change the receive beam of the terminal in this CSI- The received signal strength of the corresponding CSI-RS beam for different reception beams can be measured and the channel quality can be measured. The indicator may be implicitly used as an indicator for instructing the CSI-RS resource set ID (CSI-RS-ResourceSetId-RRM) to be fed back when the UE feeds back measurement information to the base station.

If the repetition indicator is off, the network shall set the CSI-RS resources in the corresponding CSI-RS resource set to transmit signals using different antenna patterns and different beams. The reception beam of the UE is fixedly received, and the received signal strength of the corresponding CSI-RS beam for the different transmission beams of the base station with respect to the reception beam is measured and the channel quality can be measured. The indicator indicates a resource ID, for example, a bitmap sequence of an RE mapping pattern in which a resource for feedback is set, as well as a CSI-RS resource set ID (CSI-RS-ResourceSetId-RRM) , the order of the bitmaps of the antenna ports, and so on.

It should be noted that the repetition indicator may be set in the CSI-ConfigCell, not in the CSI-RS resource set unit but in the cell unit. In this case, it means that all the CSI-RS resources and the CSI-RS resource sets set and transmitted within the cell are transmitted along the same repetition indicator. If repetition is on and there are multiple CSI-RS resource sets, it is assumed that signals will be transmitted using the same antenna pattern and the same beam in each CSI-RS resource set, and different antenna patterns, It may be implicitly set to transmit signals using different beams. In this case, the UE changes the reception beam for different CSI-RS resources in one CSI-RS resource set, and can receive the CSI-RSs transmitted by the corresponding cell. In addition, if repetition is on and multiple CSI-RS resource sets are set, it is set that all CSI-RS resource sets and CSI-RS resources in the sets will transmit signals using the same antenna pattern and the same analog beam It may be an indicator. In this case, the UE changes the reception beam according to different CSI-RS resources in all the CSI-RS resource sets, and can receive the CSI-RSs transmitted by the corresponding cell.

It should be noted that the repetition indicator may be set in the CSI-Resource-RRM in units of CSI-RS resources instead of cell units. In this case, the CSI-RS resource including the corresponding repetition indicator means that the CSI-RS resource is transmitted using the same antenna configuration and beam as the CSI-RS resource set up immediately before.

The nrofRepeateadCSI-RS-Resources is the number of repetition CSI-RS resources that tells how many CSI-RS resources are to be configured in the same CSI-RS resource set whether they are transmitted using the same antenna configuration and the same beam. It goes without saying that the parameter may be set and transmitted only when repetition is on.

Also, it is needless to say that the nrofRepeateadCSI-RS-Resources may be set in the CSI-ConfigCell in units of cells, not in the CSI-RS resource set unit. In this case, it may be determined how many CSI-RS resources existing in the CSI-RS resource sets set up and transmitted within the cell are bundled and transmitted using the same antenna configuration and the same beam.

nrofAntennaPorts is the number of antenna ports or setting information used by the CSI-RS resources transmitted in the cell.

It is needless to say that the nrofAntennaPorts may be set in the CSI-ConfigCell, not in the CSI-RS resource unit but in the cell unit. In this case, the number of antenna ports or setting information used by the CSI-RS resources set and transmitted in the corresponding cell. If all the resources in the cell use the same antenna port, they may be set as one information and transmitted. In the case where -RS resources use different antenna ports, it may be transmitted in a bit map format of different information about the antenna port set for each CSI-RS resource without including an indicator indicating such setting.

It should be noted that the nrofAntennaPorts may be set in the CSI-ResourceSet-RRM, not in the CSI-RS resource unit but in the CSI-RS resource set unit. nrofAntennaPorts is the number of antenna ports or configuration information used by the CSI-RS resources transmitted in the corresponding CSI-RS resource set. If all the resources in the CSI-RS resource set use the same antenna port, Of course, if the resources in the set use different antenna ports, they may be transmitted in bit map format with different information.

resourceElementMappingPattern is the setting information of the resource element used by the corresponding CSI-RS resource.

Also, it goes without saying that the resourceElementMappingPattern may be set in the CSI-ResourceSet-RRM in units of the CSI-RS resource set rather than the CSI-RS resource unit. The resourceElementMappingPattern is a resource element setting information used by the CSI-RS resources transmitted in the corresponding CSI-RS resource set. When all the resources in the CSI-RS resource set use the same resource element mapping pattern, And may be transmitted in a bit map format of different information when resources in the CSI-RS resource set use different resource element mapping patterns.

It should be noted that the resourceElementMappingPattern may be set in the CSI-ConfigCell, not in the CSI-RS resource unit but in the cell unit. In this case, resource element mapping pattern information or configuration information used by the CSI-RS resources set in the cell or transmitted, or the CSI-RS resources existing in each CSI-RS resource set, the CSI-RS resources in the CSI-RS resource set use the same resource element mapping pattern, but the CSI-RS resource sets use different resource element mapping If a pattern is used, it may be transmitted in a bit map format containing different information on the resource element mapping pattern including the indicator indicating the setting, or without the indicator, and the CSI-RS in the CSI- If resources use different resource element mapping patterns, these different RE ma and may be transmitted in a bit map format of the pping pattern information.

qcl_SSB_info is the information used to notify the QCL association with the synchronization signal block related to the time, frequency, and spatial QCL of the corresponding CSI-RS resource. The id, QCL ID, or transmission config ID of the corresponding SS block can be used .

It is needless to say that the qcl_SSB_info_Bitmap may be set in the CSI-ResourceSet-RRM, not in the CSI-RS resource unit but in the CSI-RS resource set unit. The qcl_SSB_info_Bitmap is the information used by the CSI-RS resources transmitted in the corresponding CSI-RS resource set to indicate the QCL association with the synchronization signal block related to the time, frequency, and spatial QCLs. The id or QCL ID Or a transmission config ID. If all the resources in the CSI-RS resource set are in QCL association with the same SS block, they may be set as one information and transmitted. If resources in the CSI-RS resource set are in QCL association with different SS blocks, And may be transmitted in a bit map format of other information.

It is needless to say that the qcl_SSB_info may be set in the CSI-ConfigCell, not in the CSI-RS resource unit but in the cell unit. In this case, the CSI-RS resources set up and transmitted in the cell or the CSI-RS resources existing in each CSI-RS resource set are information on the Sync Signal having the QCL association, and all the resources in the cell are the same SS block and a QCL association, and the CSI-RS resources in the CSI-RS resource set are QCL-related to the same SS block, but the CSI-RS resource sets have different SS blocks And a QCL association, it is also possible to transmit the bitmap format of the different information about the SS block included in the QCL association by including the indicator indicating the setting or without the indicator, and the CSI-RS resource set If the CSI-RS resources are in QCL association with different SS blocks, they may be transmitted in the form of bit map of different SS block information Of course it is.

Density is the RE / port / PRB density of CSI-RS resources transmitted in the corresponding CSI-RS resource set. If all the resources in the CSI-RS resource set use the same antenna port, And may be transmitted in a bitmap format of different information when the resources in the CSI-RS resource set use different densities.

It is to be noted that the density may be set in the CSI-ConfigCell, not in the CSI-RS resource set unit but in the cell unit. In this case, density information used by CSI-RS resource sets or CSI-RS resources existing in each cell and transmitted and received in the corresponding cell, and all resources in the cell use the same density information The CSI-RS resources in the CSI-RS resource set use the density, but when using different densities between the CSI-RS resource sets, the CSI-RS resource set includes an indicator indicating the setting, The CSI-RS resources in the CSI-RS resource set may be transmitted in a bit map of different information about the density set by the set, and if the CSI-RS resources in the CSI-RS resource set use different densities, Of course, be transmitted in the form of a message.

In addition, the density may be set in the CSI-Resource-RRM in units of CSI-RS resources rather than in the CSI-RS resource set unit.

The bandwidth part information is a parameter including information on the bandwidth part id, bandwidth, and frequency of the CSI-RS resources transmitted in the corresponding CSI-RS resource set. When all the resources in the CSI-RS resource set use the same bandwidth part And may be transmitted in a bitmap format of different information when resources in the CSI-RS resource set use different bandwidth parts.

It should be noted that the bandwidthparts may be set in the CSI-ConfigCell, not in the CSI-RS resource set unit but in the cell unit. In this case, it is the bandwidthparts information used by the CSI-RS resource sets or the CSI-RS resources existing in the corresponding cell or within the CSI-RS resource set. If all the resources in the cell use the same bandwidthparts, The CSI-RS resources in the CSI-RS resource set use the bandwidthparts, but when different bandwidthparts are used between the CSI-RS resource sets, the CSI-RS resource set includes the indicator indicating the setting, In case that CSI-RS resources in different CSI-RS resource sets use different bandwidthparts, the bitmap format of the different bandwidthparts information may be transmitted. As shown in FIG.

It is needless to say that the bandwidthparts may be set in the CSI-Resource-RRM in units of CSI-RS resources rather than in the CSI-RS resource set unit.

The csi-rs-TransmissionBW is a value of a bandwidth that indicates to the UE how far different CSI-RSs transmitted by the cell are transmitted over a wide frequency band. The csi-rs-TransmissionBW is a reference point at a frequency band and may be an absolute value indicating a center point (ARFCN or center frequency or carrier ID) and a bandwidth in a frequency band, and may be an absolute value indicating a frequency band It is a matter of course that it may be a numerical value indicating the extent of the.

Also, the csi-rs-TransmissionBW may be set for each CSI-RS resource set, not for each cell, and may be set in the CSI-ResourceSet-RRM. In this case, different CSI-RS resource sets transmitted in the corresponding cell may be transmitted with different transmission frequency bandwidths.

The csi-rs-MeasurementBW is a value that indicates to the UE which frequency bandwidth size the UE should receive using the CSI-RS transmitted from the cell. The csi-rs-MeasurementBW is a reference point at a frequency band And may be an absolute value indicating a center point (ARFCN, center frequency or carrier ID) and a bandwidth in a frequency band, and may be an absolute value indicating a frequency band Of course, it can also be a number that tells the width.

Also, when the csi-rs-MeasurementBW is a numerical value that not only indicates the size of a frequency band in which a UE measures a CSI-RS, the corresponding value is a maximum measurable frequency bandwidth Of course.

Also, if the csi-rs-MeasurementBW is a value that not only indicates a size of a frequency band for which a UE measures a CSI-RS and a value smaller than the csi-rs-TransmissionBW, The network may implicitly indicate to the csi-rs-TransmissionBW to be transmitted to use the frequency band of the csi-rs-MeasurementBW size. In this case, when the operating bandwidth of the UE belongs to the csi-rs-TransmissionBW, the UE measures the CSI-RS of the target cell by the csi-rs-MeasurementBW size within its operating bandwidth to derive the cell measurement value The UE may select a frequency band of the csi-rs-MeasurementBW size having the best performance for all the frequency bands of the target cell that can be measured using a gap, and then transmit the csi-rs-MeasurementBW frequency band The CSI-RS of the target cell may be measured to derive the cell measurement value. Alternatively, if the UE can know the bandwidth part information of the target cell through the bandwidthparts bitmap or the like, the UE selects a bandwidth part that is the same as or closest to the active bandwidth part of the serving cell to which the CSI- RS may be measured by the corresponding csi-rs-MeasurementBW frequency band to derive a cell measurement value.

In addition, the csi-rs-MeasurementBW may be set for each CSI-RS resource set, not for each cell, and may be set in the CSI-ResourceSet-RRM. In this case, the UE may receive and measure the CSI-RS with different reception frequency bandwidths for different CSI-RS resource sets and derive cell measurement values.

The csi-rs-MeasurementBW may be set for each CSI-RS resource, not for each cell, and may be set in the CSI-Resource-RRM. In this case, the UE may receive and measure the CSI-RS with different reception frequency bandwidths for different CSI-RS resources and derive cell measurement values.

18A is a diagram illustrating a terminal according to an embodiment of the present invention.

18A, the terminal 1800 may include a transmission / reception unit 1810 and a control unit 1830 for transmitting and receiving signals. The terminal 1800 can transmit and / or receive signals, information, messages, and the like through the transmission / reception unit 1810. The control unit 1830 can control the overall operation of the terminal 1800. [ The control unit 1830 may include at least one processor. The control unit 1830 may control the operation of the terminal described with reference to FIG. 1 through FIG.

In addition, the controller 1830 receives the RS setting information transmitted from the base station, specifies a resource to be transmitted by the RS according to the setting information, and measures the RS from the resource. If it is determined that the measurement of the RS satisfies a certain condition, for example, the measurement report is transmitted to the serving base station based on a subsequent operation triggered by the condition, or the setting of another RS is transmitted to the serving base station or the neighbor base station You can ask.

18B is a diagram illustrating a terminal operation according to an embodiment of the present invention.

Referring to FIG. 18B, the UE transmits CSI-RS setting information to the system information (SystemInfo), the message (PHY / MAC / RLC / RRC) through a broadcast channel (PBCH), a control channel (PDCCH), a data channel (PDSCH) As shown in FIG. The UE receiving the CSI-RS information can identify the CSI-RS reception resource by using various information such as offset information, periodicity, measurement gap, and window included in the received information.

If the CSI-RS receives the CSI-RS information, the UE can receive and measure CSI-RS information from the corresponding resource. If the result of the reception and measurement satisfies a predetermined condition, the UE transmits the PUCCH / PUSCH / PRACH).

18C is a diagram illustrating a terminal operation according to an embodiment of the present invention.

Referring to FIG. 18C, the UE transmits CSI-RS setting information to the system information (SystemInfo), the message (PHY / MAC / RLC / RRC) through a broadcast channel (PBCH), a control channel (PDCCH), a data channel (PDSCH) As shown in FIG. The UE receiving the CSI-RS information can identify the CSI-RS reception resource by using various information such as offset information, periodicity, measurement gap, and window included in the received information.

The UE that has received the CSI-RS reception resource can determine whether the performance of all the CSI-RSs is guaranteed (for example, the reception signal RSRP / RSRQ / CQI / SNR / (One or more) of the CSI-RSs that are included in the relative threshold performance in terms of performance, and the terminal receive beam to be used to receive the corresponding CSI-RSs is also a NR- It can be decided based on the SS measurement. In this case, considering CSI-RS selection, considering the reception beam of the UE, it is necessary to determine whether the UE has the best performance for a specific UE reception beam, for example, all NR-SS measurements, It is needless to say that only the optimal CSI-RSs for the UE reception beam can be selected.

The CSI-RS information can be received and measured from the corresponding resource, and if the result of the reception and measurement satisfies any preset condition, the uplink transmission can be transmitted using the corresponding configuration resource (PUCCH / PUSCH / PRACH) have.

19 is a diagram illustrating a base station according to an embodiment of the present invention.

19, the base station 1900 may include a transmission / reception unit 1910 and a control unit 1930 for transmitting and receiving signals. The base station 1900 can transmit and / or receive signals, information, messages, and the like through the transmission / reception unit 1910. The controller 1930 can control the overall operation of the base station 1900. The control unit 1930 may include at least one processor. The control unit 1930 can control the operation of the terminal described with reference to FIG. 1 through FIG.

Also, the control unit 1930 transmits certain RS setting information to the terminal and transmits the RS from the corresponding resource. When the UE transmits a certain measurement report or any RS setup request information, it receives the setup report, sets RS if necessary, transmits the setup information and the corresponding RS to the UEs, or transmits an RS setup .

It goes without saying that if it receives any RS setting information for a specific terminal (or for an unspecified terminal) from the neighboring base station, it may transmit such setting information to terminals in the network.

It is to be understood that both the foregoing general description and the following detailed description of the present invention are exemplary and explanatory and are intended to provide further explanation of the invention as claimed. Accordingly, the scope of the present invention should be construed as being included in the scope of the present invention, all changes or modifications derived from the technical idea of the present invention.

Claims (1)

A method for processing a control signal in a wireless communication system,
Receiving a first control signal transmitted from a base station;
Processing the received first control signal; And
And transmitting the second control signal generated based on the process to the base station.

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