KR102496052B1 - 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 and a system for converging a 5G communication system with IoT technology to support a higher data rate after a 4G system. This disclosure provides intelligent services based on 5G communication technology and IoT-related technologies (e.g., smart home, smart building, smart city, smart car or connected car, health care, digital education, retail, security and safety related services, etc.) ) can be applied. The present invention relates to a next-generation wireless communication system, and in particular, a method for allocating and transmitting different reference signals to terminals in a beamforming-based system including one or more base stations and one or more terminals, and the transmitted different reference signals A system, method, and apparatus for performing cell measurement and mobility management operations using

Description

Apparatus and system characterized by a method of setting different reference signals to a terminal and a method of reporting cell measurement values using different set reference signals MEASUREMENT REPORT MECHANISM}

The present invention relates to a next-generation wireless communication system, and in particular, a method for allocating and transmitting different reference signals to terminals in a beamforming-based system including one or more base stations and one or more terminals, and the transmitted different reference signals A system, method, and apparatus for performing cell measurement and mobility management operations using

Efforts are being made to develop an improved 5G communication system or pre-5G communication system to meet the growing demand for wireless data traffic after the commercialization of the 4G communication system. For this reason, the 5G communication system or pre-5G communication system is being called a system after a 4G network (Beyond 4G Network) communication system or an LTE system (Post LTE). In order to achieve a high data rate, the 5G communication system is being considered for implementation in a mmWave band (eg, a 60 gigabyte (60 GHz) band). In order to mitigate the path loss of radio waves and increase the propagation distance of radio waves in the ultra-high frequency band, beamforming, massive MIMO, and Full Dimensional MIMO (FD-MIMO) are used in 5G communication systems. ), array antenna, analog beam-forming, and large scale antenna technologies are being discussed. In addition, to improve the network of the system, in the 5G communication system, an evolved small cell, an advanced small cell, a cloud radio access network (cloud RAN), and an ultra-dense network , Device to Device communication (D2D), wireless backhaul, moving network, cooperative communication, Coordinated Multi-Points (CoMP), and interference cancellation etc. are being developed. In addition, in the 5G system, advanced coding modulation (Advanced Coding Modulation: ACM) methods FQAM (Hybrid FSK and QAM Modulation) and SWSC (Sliding Window Superposition Coding), advanced access technologies FBMC (Filter Bank Multi Carrier), NOMA (non orthogonal multiple access) and SCMA (sparse code multiple access) are being developed.

On the other hand, the Internet is evolving from a human-centered connection network in which humans create and consume information to an Internet of Things (IoT) network in which information is exchanged and processed between distributed components such as things. IoE (Internet of Everything) technology, which combines IoT technology with big data processing technology through connection with a cloud server, etc., is also emerging. In order to implement IoT, technical elements such as sensing technology, wired/wireless communication and network infrastructure, service interface technology, and security technology are required, and recently, sensor networks for connection between objects and machine to machine , M2M), and MTC (Machine Type Communication) technologies are being studied. In the IoT environment, intelligent IT (Internet Technology) services that create new values in human life by collecting and analyzing data generated from connected objects can be provided. IoT is a field of smart home, smart building, smart city, smart car or connected car, smart grid, health care, smart home appliances, advanced medical service, etc. can be applied to

Accordingly, various attempts are being made to apply the 5G communication system to the IoT network. For example, technologies such as sensor network, machine to machine (M2M), and machine type communication (MTC) are implemented by techniques such as beamforming, MIMO, and array antenna, and 5G communication technologies There is. The application of the cloud radio access network (cloud RAN) as the big data processing technology described above can be said to be an example of convergence of 5G technology and IoT technology.

In order to achieve the high data rate considered in this patent, the 5G communication system is considered to be implemented in a mmWave band (eg, 60 gigabytes (60 GHz) band). In order to mitigate the path loss of radio waves and increase the propagation distance of radio waves in the ultra-high frequency band, beamforming, massive MIMO, and Full Dimensional MIMO (FD-MIMO) are used in 5G communication systems. ), array antenna, analog beam-forming, and large scale antenna technologies are being discussed.

In addition, to improve the network of the system, in the 5G communication system, an evolved small cell, an advanced small cell, a cloud radio access network (cloud RAN), and an ultra-dense network , Device to Device communication (D2D), wireless backhaul, moving network, cooperative communication, Coordinated Multi-Points (CoMP), and interference cancellation etc. are being developed.

In addition, in the 5G system, advanced coding modulation (Advanced Coding Modulation: ACM) methods FQAM (Hybrid FSK and QAM Modulation) and SWSC (Sliding Window Superposition Coding), advanced access technologies FBMC (Filter Bank Multi Carrier), NOMA (non orthogonal multiple access) and SCMA (sparse code multiple access) are being developed.

In a communication system, a terminal needs an initial cell selection method and a cell reselection method in IDLE mode for selecting the best base station for access. In addition, in the CONNECTD mode, radio resource observation and cell selection methods (RRM (Radio Resource Management) Measurement) must be performed for handover in order for the UE to move to a better cell. In this way, a cell is determined and performance between cells is compared. In order to do this, each terminal must be able to observe or calculate a measured value representing each cell or a value derived from the measurement.To this end, in existing LTE, different base stations reserve orthogonal resources in a shared frequency band using omni-beam. And using this, the cell specific reference signal of each cell is transmitted, and the terminal measures it to know the received signal strength (RSRP) of each cell.

In addition, in a next-generation communication system considering beamforming, different base stations transmit cell and beam specific reference signals (Cell and Beam Specific Reference Signal) of each cell and each beam to different resources while rotating using different beams, and the terminal Various methods of deriving a representative value corresponding to a corresponding cell using measurement values of multiple beams transmitted from such a cell have been studied in the past.

As such, research on reference signal transmission using one beam or reference signal transmission using multiple beams has existed in the past, but each base station uses two or more types of beams having different beam areas, coverages, transmission periods, etc. A case of transmitting two or more types of reference signals generated by different signal generation rules has not been previously studied.

An object of the present invention is 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 cell measurement and mobility management using different reference signals transmitted to the terminal. It is to provide a way to perform the action.

The present invention for solving the above problems is a control signal processing method in a wireless communication system, comprising: receiving a first control signal transmitted from a base station; processing the received first control signal; and transmitting a second control signal generated based on the processing 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 a terminal, and the terminal uses the allocated different reference signals. Thus, there is an effect of performing cell measurement and mobility management operations.

In addition, by recognizing common information such as time, frequency, and direction between different reference signals, the terminal performs unnecessary operations in selecting transmission and reception beams between the base station and the terminal, for example, transmitting/receiving beams and measuring received signals. There is an effect of reducing the power and time delay of the terminal by minimizing the operation of repeating the process of selecting a beam through .

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 within 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 cycle using the same frequency band within different time resources according to an embodiment of the present invention.
4 is a diagram illustrating an example of reference signals transmitted at different cycles using the same frequency band within 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 correlates with an existing SS according to an embodiment of the present invention.
6 is a diagram for explaining another example of a resource allocation method when a CSI-RS to be configured has a correlation with a pre-existing SS according to an embodiment of the present invention.
7 is a diagram for explaining another example of a resource allocation method when a CSI-RS to be configured has a correlation with a pre-existing SS according to an embodiment of the present invention.
8 is a diagram for explaining the use of an offset in order for a PBCH block to set a CSI-RS burst set, burst, and block according to an embodiment of the present invention.
9 is a diagram for explaining the use of an offset for PBCH bursts to configure CSI-RS burst sets, bursts, and blocks according to an embodiment of the present invention.
10 is a diagram for explaining that a PBCH burst set uses an offset to configure a CSI-RS burst set, burst, and block according to an embodiment of the present invention.
11A and 11B show that a base station occupies downlink resources to transmit configuration information for CSI-RS measurement using a broadcast channel according to an embodiment of the present invention, and measures CSI-RS to a UE through the corresponding downlink resources. It is a diagram for explaining an example of setting information for.
12 is a flowchart for explaining a method of setting an RS for a terminal of a serving base station, measuring a configured RS of a terminal, and reporting a measurement result according to a condition of the terminal according to an embodiment of the present invention.
13 is a flowchart for explaining an embodiment related to setting information on different RSs to a terminal by a serving base station according to an embodiment of the present invention.
14 is a flowchart for explaining an embodiment related to setting information on RS Type 1 to a terminal by a serving base station according to an embodiment of the present invention.
15 is a flowchart for explaining an embodiment related to setting information on RS Type 1 to a terminal by a serving base station according to an embodiment of the present invention.
16 is a flowchart for explaining an embodiment related to setting information on RS Type 1 to a terminal by a serving base station according to an embodiment of the present invention.
17 is a flowchart for explaining an embodiment related to setting information on RS Type 1 to a terminal by a serving base station according to an embodiment of the present invention.
18a to 18c are block diagrams illustrating 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 accompanying drawings. In addition, in describing the present invention, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description will be omitted. In addition, terms to be described later are terms defined in consideration of functions in the present invention, which may vary according to the intention or custom of a user or operator. Therefore, the definition should be made based on the contents throughout this specification.

Advantages and features of the present invention, and methods for achieving them, will become clear with reference to the embodiments described below in detail in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be implemented in various different forms, and only the present embodiments make the disclosure of the present invention complete, and common knowledge in the art to which the present invention belongs It is provided to fully inform the holder of the scope of the invention, and the present invention is only defined by the scope of the claims. Like reference numbers designate like elements throughout the specification.

The present invention relates to a next-generation wireless communication system, and in particular, a method for allocating and transmitting different reference signals to terminals in a beamforming-based system including one or more base stations and one or more terminals, and the transmitted different reference signals A system, method, and apparatus for performing cell measurement and mobility management operations using

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

In a system and environment using beamforming, in particular, beamforming using multiple antennas in a wireless communication system in which a base station and a terminal using multiple antennas exist, a subject (terminal) of beam measurement is a serving base station and a neighboring base station. Design information, transmission method, and procedure for transmitting 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 terminal.

In addition, the present invention is a beam measuring subject (terminal) in a system and environment using beamforming, particularly beamforming using multiple antennas, in a wireless communication system in which a base station and a terminal using multiple antennas exist, and a serving base station and a neighbor When an additional reference signal exists on top of a kind of reference signal transmitted from the base station, in addition to the kind of reference signal that is basically observed and measured, additional reference signal configuration information for observing and measuring the additional reference signal is provided to the serving base station. Alternatively, the information, transmission method, and procedure to be transmitted from the neighboring base station to the terminal are designed.

< Existing technology: Legacy LTE CSI-RS configuration >

CSI-RS config in existing LTE standard. The structure and components of 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

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

Existing LTE standard CSI-RS based DRS config. The structure and components of 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. Considering RS type and architecture >

The terminal can measure the reference signal transmitted through a beam sweeping configuration in which base stations rotate and transmit beams using different antenna configurations. Reference signals under consideration include a synchronization signal and a channel state measurement reference signal (CSI-RS), but may not necessarily be limited thereto.

In one embodiment to be considered, a reference signal (RS) includes a burst set transmitted with a certain period as shown in FIG. 1, and includes bursts transmitted continuously or at certain intervals within the burst set, , may include blocks transmitted continuously or at certain intervals within the corresponding burst. At this time, each block may transmit beamformed signal information using different or identical antenna configurations, and the unit of beam sweeping that transmits RS while changing these beams may be a block, burst, or burst set. is of course

In addition, in another embodiment to be considered, different types of Reference Signals (RS) may have the same period as shown in FIG. 2 and be transmitted using different frequency bands on the same time resource. At this time, also, the different types of reference signals include a burst set transmitted at a certain period, and include bursts transmitted continuously or at certain intervals within the burst set, and continuously or at certain intervals within the burst set. It may contain blocks transmitted with . At this time, each block may transmit beamformed signal information using different or identical antenna configurations, and the unit of beam sweeping that transmits RS while changing these beams may be a block, burst, or burst set. is of course

In addition, 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 two RS Type 2 blocks exist corresponding to one RS Type 1 block, it goes without saying that the numbers are not fixed and can be considered in various ways.

Referring to FIG. 3, in another embodiment to be considered, different types of Reference Signals (RS) may have the same period as shown in FIG. 3 and may be transmitted using the same frequency band on different time resources. am. At this time, also, the different types of reference signals include a burst set transmitted at a certain period, and include bursts transmitted continuously or at certain intervals within the burst set, and continuously or at certain intervals within the burst set. It may contain blocks transmitted with . At this time, each block may transmit beamformed signal information using different or identical antenna configurations, and the unit of beam sweeping that transmits RS while changing these beams may be a block, burst, or burst set. is of course

In addition to this, it is of course that different types of reference signals may be transmitted on different time and frequency resources with different independent cycles without correlation with each other. FIG. 4 shows RSs transmitted using the same frequency band on different time resources with different cycles as an example.

< B. Elements of signals that can be delivered to the UE by the network to measure the reference signal: Elements for RS measurement configuration from network to UE>

When a serving base station and a neighboring base station capable of transmitting different types of RS exist, the network may provide the following information to the terminal in order to measure the corresponding RSs (or any RS). The content to be described in this patent does not have to be limited to any one type of RS, and the network may be any one of configurable RSs, of course. Presently contemplated RSs are as follows, but this patent is not limited thereto: Sync. Signal (PSS, SSS, any other SS), Cell Specific RS, Beam specific RS, Beam refinement RS, CSI-RS, Discovery RS, DM-RS, etc.

· Cell information

-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 information

- 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

v In LTE, Subframes containing CSI reference signals shall satisfy

v in terms of # of subframes, time, # of symbols, # of TTI, # of slot, # of mini-slot, # of PDCCH TTI, …

-Periodicity

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

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

˚ Periodicity of block within a burst in terms of # of subframes, time, # of symbols, # of TTI, # of slot, # of mini-slot, # 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 time offset and/or frequency offset

· Other information

-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

v Another RS should be already configured to UE

v 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 needed. In order to derive such a representative value in a beamforming system, for example, among all reference signals that are beamformed and transmitted in different beams, N best reference signal measurement values are selected, and any condition (of the best beam) is selected. Of course, the representative value of the cell can be calculated by taking the average value of reference signal measurement values that satisfy a measurement value within an offset from the measurement value or a measurement value exceeding a certain absolute threshold).

˚ In the case of deriving a cell representative value using one or more reference signal measurement values as described above, for fair comparison, when the base station transmits a setting for measuring a certain reference signal to the terminals (measurement configuration), the corresponding It goes without saying that N, which is the number of measurement values of the reference signal to be considered for calculating the cell representative value using the reference signal, may be transmitted as well.

The network can configure the terminal to measure a certain RS by providing all or part of the various information to the terminal, and various embodiments will be reviewed in the future.

< C. UE measurement configuration method of the network >

When there is a serving base station and a neighboring base station transmitting an RS that can be received and measured by the terminal, in order to measure the corresponding RS, the network transmits the RS information transmitted by the serving base station and the neighboring base station to the terminal in the following way. can provide

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

A method of directly providing RS information of a serving cell and a target cell to be measured to a UE to which a serving base station belongs

Basically, a method of independently transmitting messages in the form of unicast to each terminal is considered. In addition, if one or more terminals are grouped and designated, it is also possible to transmit messages to multiple terminals simultaneously in the form of multicast.

In one embodiment, the base station may set a dedicated signaling-based CSI-RS for measuring and reporting channel information with the base station to the terminal. The corresponding CSI-RS is valid only for a specific terminal, and the base station can select and set the antenna configuration, transmission power, resource, etc., and this information is sent to the terminal in the form of an RRC message (RRCConnectionReconfiguration), MAC message, PHY message, etc. Of course, it can be transmitted through the method.

In the above embodiment, the CSI-RS transmitted by the base station to the terminal is information valid only within a cell, and is information that other terminals belonging to neighboring cells do not need to measure or estimate. Therefore, when the corresponding CSI-RS is set, the UE knows that the corresponding CSI-RS is valid only within the cell, and since it already knows information about the transmitting base station and the transmitting cell, the base station may send only information related to CSI-RS measurement. .

For example, the base station may set the CSI-RS to the terminal as a dedicated signaling method for measuring a channel in the cell, including the following information. Of course, the CSI-RS can be designed including cases in which each CSI-RS is transmitted with different antenna settings and different beams in consideration of a multi-beamforming environment.

In addition, of course, a signal actually considered and transmitted may be transmitted including all or some 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 Resources 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)

Note that the above ‘beam’ could be replaced with CSI-RS measurement unit such as CSI-RS block, CSI-RS burst, or CSI-RS burst set.

In another embodiment, the base station may configure a dedicated signaling-based CSI-RS for measurement and reporting of channel information with the base station as well as neighbor cell information measurement to the terminal. It may include not only the corresponding CSI-RS serving cell information but also neighboring cell configuration information, and this information may be in a form valid only for a specific terminal, and the base station selects antenna configuration, transmission power, resources, etc. It can be configured, and such information can be delivered to the corresponding terminal through various methods in the form of an RRC message (RRCConnectionReconfiguration), MAC message, PHY message, etc. Of course.

In the above embodiment, the CSI-RS transmitted by the base station to the terminal is valid information not only within the cell but also in neighboring cells, and is information that allows terminals belonging to a serving cell to measure or estimate CSI-RS transmitted by neighboring cells. Therefore, when the corresponding CSI-RS is configured, the UE should know that the corresponding CSI-RS includes neighboring cell information and recognize that additional information for successfully receiving a signal transmitted from the serving cell may also be included. .

For example, the base station may set the CSI-RS to the terminal as a dedicated signaling method for measuring a channel in the cell, including the following information. Of course, the CSI-RS can be designed including cases in which each CSI-RS is transmitted with different antenna settings and different beams in consideration of a multi-beamforming environment.

· Cell information

-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 information

- 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 information

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

· Other information

-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

v Another RS should be already configured to UE

v 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 needed. In order to derive such a representative value in a beamforming system, for example, among all reference signals that are beamformed and transmitted in different beams, N best reference signal measurement values are selected, and any condition (of the best beam) is selected. Of course, the representative value of the cell can be calculated by taking the average value of reference signal measurement values that satisfy a measurement value within an offset from the measurement value or a measurement value exceeding a certain absolute threshold).

˚ In the case of deriving a cell representative value using one or more reference signal measurement values as described above, for fair comparison, when the base station transmits a setting for measuring a certain reference signal to the terminals (measurement configuration), the corresponding It goes without saying that the number N, which is the number of reference signal measurement values to be considered for calculating the cell representative value using the reference signal, may be transmitted.

Note that the above ‘beam’ could be replaced with CSI-RS measurement unit such as CSI-RS block, CSI-RS burst, or CSI-RS burst set.

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

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

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

In addition, the CSI-RS configuration information is classified, and some of it may exist in a broadcast channel (PBCH), and the other part may exist in any control channel / data channel (PDCCH / PDSCH) designated by the broadcast channel (PBCH), Of course, another part may be transmitted to the terminal through a signal such as PHY/MAC/RRC/RLC.

5A shows a method for allocating CSI-RS burst set resources with an offset based on SS burst set, a method for allocating CSI-RS burst resources with an offset based on SS burst, and a method for allocating CSI-RS block resources with an offset based on SS block. It shows how to allocate.

5B shows a method for allocating CSI-RS burst set resources with time and frequency offsets based on SS burst sets, a method for allocating CSI-RS burst resources with time and frequency offsets based on SS bursts, and a time and frequency offsets based on SS blocks. It shows a method of allocating CSI-RS block resources with a frequency offset. The figure shows a method of allocating CSI-RS resources occupying different frequencies in the same time resource.

5C illustrates a method of allocating different CSI-RS resources with time and frequency offsets based on the 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. Of course, may take the form of all or part of the following sequence.

intra - cellUseInd BOOLEAN ,

Indication of whether the corresponding CSI-RS is dedicated within a cell or can be used for handover between cells

physCellID INTEGER (0…N_ pcid ),

Cell ID belonging to the corresponding CSI-RS

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

Configuring the corresponding CSI-RS transmit antenna port

resourceConfigList ResourceConfigList ,

Transmission resource location of the corresponding CSI-RS (list)

subframeConfigList SubframeConfigList ,

Transmission subframe position of corresponding CSI-RS (list)

freqConfigList FreqConfigList ,

Transmission frequency and subcarrier location of corresponding CSI-RSs (list)

timeOffset INTEGER (0…N_to),

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

frequencyOffset INTEGER (- Nfo1 … N_ fo2 ),

Relative frequency between NR-SSs associated with the corresponding CSI-RS transmission subframe/slot/symbol and the corresponding config (to which the PBCH belongs or measured by the UE), subcarrier interval

periodicity INTEGER (0…N_ prd ),

Corresponding CSI-RS transmission period (scheduled transmission time of the same next CSI-RS)

p-C INTEGER (-N_ negpc … N_ pospc ),

UE assumption on reference PDSCH transmitted power for CSI feedback

measureUnit INTEGER (0…N_ munit ),

Corresponding CSI-RS unit of measure (slot, symbol, subframe, sub-symbol, mini-slot, …)

Ratio display: Can be expressed as a multiple of the smallest unit or as a ratio with the standard unit (NR-SS size)

Indicator display: Can be expressed as an indicator that is 1:1 mapped to each measurement unit

numberofmeasUnits INTEGER (0…N_ munits ),

The number of CSI-RS Units that require measurement associated with the reference NR-SS

measGap INTEGER (0…N_mgap),

Interval between CSI-RSs that require measurement associated with the reference NR-SS

measWindow INTEGER (0…N_ mwindow ),

Total CSI-RS measurement time associated with the reference NR-SS

csi- rs - IDList CSI - RS - IDList

Corresponding CSI-RS ID list (beam ID list, scrambling id list)

QCL -ID

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

QCL is an abbreviation of Quasi co-location, and indicates that certain characteristics of two different signals are the same. Time QCL indicates that time synchronization is the same (or almost similar), frequency QCL indicates that frequency synchronization is the same (or almost similar), and spatial QCL indicates that transmission/reception directions are similar. For two different signals with the same time, frequency, and spatial QCL, it can be assumed that the transmitting and receiving end of the signal exists in the same physical location and uses a directional antenna setting and beam having the same direction, and this patent QCL is defined as a correlation between signals that can be transmitted/received using the same beam.

QCLed - NR -SS-ID

ID (NR-SS block index) of a specific NR-SS for which the corresponding CSI-RS has a QCL. The UE that has received the corresponding CSI-RS configured uses the Rx beam with the best performance among the Rx beams used when measuring NR-SS (block, burst, burst set) that matches the QCLed-NR-SS-ID to obtain the corresponding CSI -RS can be received. With this operation, the UE receives the CSI-RS several times while changing the reception beam, omits the operation of finding the reception beam and reception CSI-RS performance capable of receiving the optimal CSI-RS, and receives the NR-SS. The best CSI-RS performance can be found immediately using the used terminal beam. As a result, the terminal can reduce power consumption and measurement delay.

QCLed -CSI- RS -ID

ID of a specific QCLed-CSI-RS for which the corresponding CSI-RS has a QCL. A UE that has received the corresponding QCLed-CSI-RS configured receives the corresponding CSI-RS using the RX beam having the best performance among the RX beams used when measuring the QCLed-CSI-RS matching the QCLed-CSI-RS-ID can do. With this operation, the terminal receives the CSI-RS several times while changing the reception beam, omits the operation of finding the reception beam and reception CSI-RS performance capable of receiving the optimal CSI-RS, and uses the QCLed-CSI-RS The best CSI-RS performance can be found immediately using the terminal beam used for reception. As a result, the terminal can reduce power consumption and measurement delay.

Num -CSI- RS -per- NR -SS

The number of CSI-RS beams associated with QCLed NR-SS.

The corresponding number of beams can be used as an example to find the timing of CSI-RS.

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

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

Numerology-ID

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

Of course, the NR-SS ID or CSI-RS ID may be replaced with a parameter indicating the ID of any other reference signal (RS).

Example 2:

CSI-RS config. Of course, may take the form of all or part of the following sequence.

CSI- RS -ID

Corresponding CSI-RS ID (beam ID, scrambling id)

QCL -ID

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

QCLed - NR -SS-ID

ID (NR-SS block index) of a specific NR-SS for which the corresponding CSI-RS has a QCL. The UE that has received the corresponding CSI-RS configured uses the Rx beam with the best performance among the Rx beams used when measuring NR-SS (block, burst, burst set) that matches the QCLed-NR-SS-ID to obtain the corresponding CSI -RS can be received. With this operation, the UE receives the CSI-RS several times while changing the reception beam, omits the operation of finding the reception beam and reception CSI-RS performance capable of receiving the optimal CSI-RS, and receives the NR-SS. The best CSI-RS performance can be found immediately using the used terminal beam. As a result, the terminal can reduce power consumption and measurement delay.

QCLed -CSI- RS -ID

ID of a specific QCLed-CSI-RS for which the corresponding CSI-RS has a QCL. A UE that has received the corresponding QCLed-CSI-RS configured receives the corresponding CSI-RS using the RX beam having the best performance among the RX beams used when measuring the QCLed-CSI-RS matching the QCLed-CSI-RS-ID can do. With this operation, the terminal receives the CSI-RS several times while changing the reception beam, omits the operation of finding the reception beam and reception CSI-RS performance capable of receiving the optimal CSI-RS, and uses the QCLed-CSI-RS The best CSI-RS performance can be found immediately using the terminal beam used for reception. 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. Of course, may take the form of all or part of the following sequence.

NR -SS-based-time-offset

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

Here, the specific NR-SS is the corresponding CSI-RS and the QCL NR-SS, and this information can be implicitly known by the terminal through observation, or it can be explicitly included as QCLed-NR-SS-ID and transmitted. am.

NR -SS-offset-indicator

An indicator indicating that the time offset of the corresponding CSI-RS is an offset from a specific NR-SS having QCL. If True, the timing of the corresponding CSI-RS is an offset from the specific NR-SS in the QCL relationship with the corresponding CSI-RS, and if False, the timing of the corresponding CSI-RS is an offset from the frame boundary (radio frame, slot, symbol…) is the value

CSI- RS -RE-mapping

This is an index that shows the mapping rule for finding the RE through which the corresponding CSI-RS is transmitted. When a specific mapping method (table) is specified in the standard, the UE and the base station exchange the index to successfully and efficiently share the mapping. can

Periodicity-ID

This is an actual value of an index or period indicating a period in which the corresponding CSI-RS is repeated.

Example 4:

CSI-RS config. Of course, may take the form of all or part of the following sequence.

The above embodiment is an example in which maximum common information that each CSI-RS resource can have is transmitted in Cell config and individual information possessed only by each CSI-RS is provided in the form of a list.

Example 5: Transmission of all resource information

This embodiment describes an embodiment in which resources of all CSI-RSs are individually configured when a base station configures a certain RS (CSI-RS) to be observed by a UE.

Embodiment 6: NR-SS-based connectivity relationship transmission

When the base station configures a certain RS (CSI-RS) to be observed by the UE, the resource of the corresponding RS (hereinafter CSI-RS) is correlated with a certain reference RS (NR-SS or CSI-RS, hereinafter referred to as NR-SS) By doing so, the terminal can be confirmed. In this embodiment, an embodiment in which CSI-RSs having the same offset are configured for all reference NR-SSs without notifying the ID of a reference NR-SS with which a specific CSI-RS has a correlation will be described. The example shows the correlation in Fig. 5a.

The terminal receiving (configured) the CSI-RS config. can recognize that one or more CSI-RSs are set with certain rules for the cell in which the corresponding CSI-RS is configured, using the above embodiment, and One or more CSI-RSs are composed of common information (period, NR-SS in QCL relationship, scrambling ID, numerology, antenna port, etc.) and independent information (CSI-RS transmission location, antenna port, etc.), and the independent information In order to identify CSI-RSs, each CSI-RS can be identified and received by referring to the configuration information or by performing any calculation using parameters provided in the configuration information. As an embodiment of such an operation, the UE can determine and measure the location of the CSI-RS in the following way.

1) Identify the CSI-RS transmission start point that is offset (time/freq) away from the measured NR-SS

2) Determining the need to receive one CSI-RS with the size of measUnit from the starting point

3) Determining the need to receive total numberofmeasUnits CSI-RS

4) Identifying that there is a measGap gap between each CSI-RS

5) Identify each CSI-RS ID from csi-rs-IDList

6) Recognize that each CSI-RS is retransmitted in the same frequency resource in units of periodicity

Embodiment 7: NR-SS-based connectivity relationship transmission

When the base station configures a certain RS (CSI-RS) to be observed by the UE, the resource of the corresponding RS (hereinafter CSI-RS) is correlated with a certain reference RS (NR-SS or CSI-RS, hereinafter referred to as NR-SS) By doing so, the terminal can be confirmed. In this embodiment, one or more CSI-RSs having the same offset for all reference NR-SSs are set in a one-to-many relationship without informing the ID of the reference NR-SS with which a specific CSI-RS is correlated Examples are described. The embodiment shows the correlation in FIGS. 5b and 5c.

Embodiment 8: NR-SS-based connection relationship and NR-SS ID transmission in connection relationship

When the base station configures a certain RS (CSI-RS) to be observed by the UE, the resource of the corresponding RS (hereinafter CSI-RS) is correlated with a certain reference RS (NR-SS or CSI-RS, hereinafter referred to as NR-SS) By doing so, the terminal can be confirmed. In this embodiment, of course, one or more CSI-RSs having different offsets with respect to the reference NR-SSs may be configured by notifying the ID of the reference NR-SS with which a specific CSI-RS correlates. The embodiment shows the correlation in FIGS. 5b and 5c.

The UE receiving the information can specify a CSI-RS resource from an NR-SS having a specific NR-SS ID, and uses a UE Rx beam having optimal performance to receive the corresponding NR-SS to obtain the corresponding NR-SS It is possible to receive a CSI-RS having a correlation with.

<<< Figure 6 >>>

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

In addition, the CSI-RS configuration information is classified, and some of it may exist in a broadcast channel (PBCH), and the other part may exist in any control channel / data channel (PDCCH / PDSCH) designated by the broadcast channel (PBCH), Of course, another part may be transmitted to the terminal through a signal such as PHY/MAC/RRC/RLC.

6 shows a method for allocating CSI-RS burst set resources with an offset based on SS bursts, a method for allocating CSI-RS burst set resources with offsets based on SS blocks, and a method for allocating CSI-RS burst resources with offsets based on SS blocks. It shows how to allocate.

<<< Figure 7 >>>

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

In addition, the CSI-RS configuration information is classified, and some of it may exist in a broadcast channel (PBCH), and the other part may exist in any control channel / data channel (PDCCH / PDSCH) designated by the broadcast channel (PBCH), Of course, another part may be transmitted to the terminal through a signal such as PHY/MAC/RRC/RLC.

7 shows a method for allocating CSI-RS burst resources with an offset based on SS burst set, a method for allocating CSI-RS block resources with an offset based on SS burst set, and a method for allocating CSI-RS block resources with an offset based on SS bursts. It shows how to allocate.

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

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, frequency, …)

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

· With this option, UE may know that the CSI-RS of a specific resource will be transmitted by the same beam as the referred RS.

2. Indication of the specific resource of the referred type of RS (i.e., 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 of a specific resource will be transmitted by the same beam as the referred RS

i. i.e., even if the reference resource is in the middle of the referred RS, the CSI-RS will be transmitted on the same beams consequently after the reference resource.

· With this option, network can allocate only part of the referred RSs as CSI-RS.

3. Indication of the specific resource of the referred type of RS (i.e., resource of the reference point of the SS burst set/ burst/ block) + 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 of a specific resource will be transmitted by the same beam as the referred RS

i. i.e., even if the reference resource is in the middle of the referred RS, the CSI-RS will be transmitted on the same beams consequently after the reference resource.

· With this option, network can allocate only part of the referred RSs as CSI-RS.

4. Indication of referred type of RS (i.e., SS burst set = 0, SS burst = 1, SS block = 2) + Indication of CSI-RS (i.e., CSI-RS burst set = 0, CSI-RS burst = 1 , 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, UE may know that the CSI-RS of a specific resource will be transmitted by the same beam as the referred RS.

5. Indication of the specific resource of the referred type of RS (i.e., resource of the reference point of the SS burst set/ burst/ block) + Indication of referred type of RS (i.e., SS burst set = 0, SS burst = 1, SS block = 2) + Indication of CSI-RS (i.e., CSI-RS burst set = 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 of a specific resource will be transmitted by the same beam as the referred RS

i. i.e., even if the reference resource is in the middle of the referred RS, the CSI-RS will be transmitted on the same beams consequently after the reference resource.

· With this option, network can allocate only part of the referred RSs as CSI-RS.

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

A method in which a base station provides RS information of a corresponding cel to be measured to a plurality of unspecified terminals as a broadcast channel or a broadcast signal

As an embodiment, the terminal may include and transmit RS configuration information in any broadcast channel or broadcast message.

Of course, the transmittable CSI-RS information included in the corresponding message may be part of the various pieces of information that have been dictated above.

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

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

In addition, the CSI-RS configuration information is classified, and some of it may exist in a broadcast channel (PBCH), and the other part may exist in any control channel / data channel (PDCCH / PDSCH) designated by the broadcast channel (PBCH), Of course, another part may be transmitted to the terminal through a signal such as PHY/MAC/RRC/RLC.

8 may show that any PBCH block can use an offset to configure a CSI-RS burst set, burst, and block.

9 may show that any PBCH burst may use an offset to configure a CSI-RS burst set, burst, and block.

10 may show that any PBCH burst set may use an offset to configure a CSI-RS burst set, burst, and block.

At this time, the terminal and the base station may implicitly know that the corresponding configuration resource uses the same base station beam as the configured PBCH (by standard), or the base station announces it with the corresponding indicator (i.e., 1 bit) by putting an indicator Of course you can.

In addition, since the PBCH is a signal continuously transmitted in a short period within a cell, the corresponding CSI-RS may not be included every time to save power. In this case, of course, whether the corresponding PBCH includes the CSI-RS or not may be indicated by 1 bit and transmitted to the PBCH.

If power saving is to be maximized, the PBCH may leave only minimum information necessary for CSI-RS detection, for example, an offset, and may not include other information, of course.

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

As another embodiment, referring to FIG. 11A, a base station occupies downlink resources to transmit configuration information for CSI-RS measurement using a certain broadcast channel, and uses a number of unspecified terminals (or specific terminals) through the downlink resources. ), information for CSI-RS measurement may be set. The corresponding CSI-RS configuration information may exist in the shown broadcasting channel (PBCH), or may exist in any control channel / data channel (PDCCH / PDSCH) designated by the broadcasting channel (PBCH), Of course, it may be transmitted to the terminal through a signal such as PHY/MAC/RRC/RLC.

In addition, the CSI-RS configuration information is classified, and some of it may exist in a broadcast channel (PBCH), and the other part may exist in any control channel / data channel (PDCCH / PDSCH) designated by the broadcast channel (PBCH), Of course, another part may be transmitted to the terminal through a signal such as PHY/MAC/RRC/RLC.

The broadcast channel (PBCH) includes the control channel or data channel (PDCCH/PDSCH) resource schedule information and an indicator indicating that the corresponding resource (PDCCH/PDSCH) includes CSI-RS allocation information. Of course it could be.

FIG. 11B shows a method in which a broadcast channel sets common information of a CSI-RS and detailed information of a CSI-RS using a dedicated PHY/MAC/RLC/RRC signal so that a UE measures a CSI-RS by combining the two pieces of information. It shows the frame structure and procedure for operation.

In an embodiment shown in FIG. 11B, a network provides common information of CSI-RS resources through a broadcast channel (PBCH) and configures detailed CSI-RS resources using a dedicated signal (PHY/MAC/RLC/RRC). An example of providing information. In this embodiment, an 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-RS transmission antenna port information, etc. are dedicated signal is provided.

It goes without saying that any CSI-RS configuration information other than the above embodiment can be distributed and provided to the terminals by the network through a broadcast channel, a control channel, or a data channel.

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

A method for a UE to discover a measurement setting by itself using a method described in the standard without the base station providing RS information of the corresponding cel to be measured to a number of unspecified UEs through signal transmission

In one embodiment, when a UE discovers a certain RS, it can discover and measure CSI-RS resources by itself using the following rules.

1. Spec fixed offset to discover CSI-RS block/burst/burst set according to a SS block/burst/burst set resource.

<< Figure 12. Pre-configured RSs >>

Referring to FIG. 12 , different RS configuration steps for a terminal of a serving base station, a set RS measurement step of a terminal, and a measurement result reporting step according to conditions of a terminal can be reviewed. As shown in FIGS. 5A to 5C, the serving base station can set different RS information to the terminal for the purpose of measurement, and in addition to this, conditions for sending a measurement report (MR) can be set as well. The UE attempts to measure different RSs as configured, checks the conditions for transmitting the measurement report as configured based on the results of the measurements, and reports the measurement results when the conditions are satisfied.

The measurement report or RS Type2 setup request message may include the measurement result for the configured RS, and the measurement result is managed by the measurement object ID, and both the base station and the terminal can determine which RS the measurement result is through the corresponding ID. can perceive

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

Referring to FIG. 13, the serving base station sets information about different RSs to the terminal. The UE, which has received information on the different RSs, basically performs continuous measurement on a serving cell and neighboring cells for one RS (RS Type 1, i.e., Sync. Signal), and under what conditions (Condition_Type2) If satisfied, the measurement for another type of RS Type2 is additionally performed.

As shown in FIG. 13, the serving base station can set different RS information to the terminal for the purpose of measurement, and can also set any conditions (Condition_Type2) for measuring the different types of RS. In addition to this, conditions for sending a measurement report (hereinafter referred to as MR) may also be set. The Condition_Type2 may be the same as or different from Condition_MR, and detailed conditions may be transmitted in the form of existing LTE A1 to A6.

The measurement configuration for the RS Type 2 (i.e., CSI-RS) can notify the terminal that the Condition_Type2 is included, including any indication (i.e., indication_condition_Type2), and the terminal can inform the terminal that these indications and conditions are If included, it goes without saying that the corresponding RS can be measured when these conditions are satisfied.

Also, in another embodiment, when the UE does not have such Condition_Type2, and the measurement setting for RS Type2 (i.e., CSI-RS) is set, but the measurement report triggering event for the corresponding RS is not specifically specified Of course, measurement for RS Type 2 may be performed when a certain condition (Condition_Type2) is satisfied according to its own conditions.

The UE attempts to measure different RSs as configured, checks the conditions for transmitting the measurement report as configured based on the results of the measurements, and reports the measurement results when the conditions are satisfied.

The measurement report or RS Type2 setup request message may include the measurement result for the configured RS, and the measurement result is managed by the measurement object ID, and both the base station and the terminal can determine which RS the measurement result is through the corresponding ID. can perceive

If there is one or more other RSs (e.g., CSI-RS) that have a QCL correlation with the corresponding RS (e.g., NR-SS), the base station may set the corresponding RSs as RS Type 2 to the UE and request measurement Of course.

<< Figure 14. RS Type2 configuration based on UE signal >>

Referring to FIG. 14, the serving base station sets information about RS Type 1 to the terminal. The UE, which has received information on the RS Type 1, basically performs continuous measurement on the serving cell and neighboring cells for the corresponding RS (RS Type 1, i.e., Sync. Signal), and satisfies a certain condition (Condition_Type2) , uplink transmission including RS Type 1 measurement result report or RS Type 2 configuration request is performed.

The measurement report or RS Type2 setup request message may include the measurement result for the configured RS, and the measurement result is managed by the measurement object ID, and both the base station and the terminal can determine which RS the measurement result is through the corresponding ID. can perceive

If there is one or more other RSs (e.g., CSI-RS) that have a QCL correlation with the corresponding RS (e.g., NR-SS), the base station may set the corresponding RSs as RS Type 2 to the UE and request measurement Of course.

As can be seen in FIG. 14, the serving base station measures a specific RS (Type1, i.e., Sync. Signal) under a certain condition (Condition_Type2) for the purpose of setting a certain RS (Type2, i.e., CSI-RS) to the corresponding UE. Of course, it is possible to set the result. In addition to this, conditions for sending a measurement report (hereinafter referred to as MR) may also be set. The Condition_Type2 may be the same as or different from Condition_MR, and detailed conditions may be transmitted in the form of existing LTE A1 to A6.

If Condition_Type2 is satisfied, the UE may send a RS Type1 measurement report (RRC/MAC/PHY message) or RS Type2 configuration request message (RRC/MAC/PHY message). The serving base station receiving the report or request message from the terminal, if possible, sets RS Type2 to the corresponding terminal so that the terminal can measure or report on the corresponding RS. Of course,

In addition, in another embodiment, when the UE does not have such Condition_Type2 and does not have measurement settings for RS Type2 (i.e., CSI-RS), in any case where performance gain is expected, certain conditions (Condition_Type2) It goes without saying that if satisfies , RS Type 2 configuration may be requested.

Of course, the case of the RS Type 2 may include not only neighboring cell information, but also only serving cell information.

The UE attempts to measure different RSs as configured, checks the conditions for transmitting the measurement report as configured based on the results of the measurements, and reports the measurement results when the conditions are satisfied.

<< Figure 15. RS Type2 configuration based on UE signal, considering inter-cell interaction >>

Referring to FIG. 15, the serving base station sets information about RS Type 1 to the terminal. The UE, which has received information on the RS Type 1, basically performs continuous measurement on the serving cell and neighboring cells for the corresponding RS (RS Type 1, i.e., Sync. Signal), and satisfies a certain condition (Condition_Type2) , uplink transmission including a measurement result report for RS Type 1 or a configuration request for RS Type 2 is directly performed.

As can be seen in FIG. 15, the serving base station measures a specific RS (Type1, i.e., Sync. Signal) under a certain condition (Condition_Type2) for the purpose of setting a certain RS (Type2, i.e., CSI-RS) to the corresponding UE. Of course, it is possible to set the result. In addition to this, conditions for sending a measurement report (hereinafter referred to as MR) may also be set. The Condition_Type2 may be the same as or different from Condition_MR, and detailed conditions may be transmitted in the form of existing LTE A1 to A6.

If Condition_Type2 is satisfied, the UE may send a RS Type1 measurement report (RRC/MAC/PHY message) or RS Type2 configuration request message (RRC/MAC/PHY message).

The measurement report or RS Type2 setup request message may include the measurement result for the configured RS, and the measurement result is managed by the measurement object ID, and both the base station and the terminal can determine which RS the measurement result is through the corresponding ID. can perceive

If there is one or more other RSs (e.g., CSI-RS) that have a QCL correlation with the corresponding RS (e.g., NR-SS), the base station may set the corresponding RSs as RS Type 2 to the UE and request measurement Of course.

The serving base station receiving the report or request message from the terminal, if possible, sets RS Type2 to the corresponding terminal so that the terminal can measure or report on the corresponding RS. Of course,

In addition, in another embodiment, when the UE does not have such Condition_Type2 and does not have measurement settings for RS Type2 (i.e., CSI-RS), in any case where performance gain is expected, certain conditions (Condition_Type2) It goes without saying that if satisfies , RS Type 2 configuration may be requested.

The measurement report or RS Type2 setup request message may include the measurement result for the configured RS, and the measurement result is managed by the measurement object ID, and both the base station and the terminal can determine which RS the measurement result is through the corresponding ID. can perceive

If there is one or more other RSs (e.g., CSI-RS) that have a QCL correlation with the corresponding RS (e.g., NR-SS), the base station may set the corresponding RSs as RS Type 2 to the UE and request measurement Of course.

In this way, the serving base station receiving the uplink signal transmission as a result of the set condition Condition_Type2 from the terminal, if it is necessary to also set the RS Type 2 of the specific neighboring base station (or base stations) to the corresponding terminal, directly to the neighboring base stations (via X2 interface, internet network, or any wired back-haul link) can request RS Type 2 configuration to the corresponding terminal. The RS Type 2 setting request signal transmitted from the serving base station to the neighboring base station includes resource information (frequency, time, antenna, beam information, offset, etc.) capable of setting the corresponding RS Type 2, terminal information (terminal ID, terminal used frequency, Time, antenna, beam information, offset, etc.) and serving cell information (serving cell ID, used frequency, time, antenna, beam information, offset, etc.) may be transmitted as well.

The neighbor target base station that has received the RS Type 2 setting request from the serving base station can set the corresponding RS to the corresponding terminal, if possible, and transmit the corresponding setting information to the serving base station. The setting information includes resource information (frequency, time, antenna, beam information, offset, etc.) that can set the corresponding RS Type 2, terminal information (terminal ID, terminal used frequency, time, antenna, beam information, offset, etc.), and It goes without saying that information on a target cell to be set (cell ID, used frequency, time, antenna, beam information, offset, etc.) and the like can be transmitted.

Of course, the serving base station that has received the corresponding RS Type 2 setting information from the target base station can set the RS Type 2 of the serving base station and the target base station to the terminal.

The UE attempts to measure different RSs of different cells as configured, checks the conditions for transmitting the measurement report as configured based on the measurement results, and reports the measurement results when the conditions are satisfied.

<< Figure 16. RS Type2 configuration based on direct UE request/reply >>

Referring to FIG. 16, the serving base station sets information about RS Type 1 to the terminal. The UE, which has received information on the RS Type 1, basically performs continuous measurement on the serving cell and neighboring cells for the corresponding RS (RS Type 1, i.e., Sync. Signal), and satisfies a certain condition (Condition_Type2) Then, uplink transmission including an RS Type2 configuration request is performed for the serving base station and the target base stations.

As can be seen in FIG. 16, the serving base station measures a specific RS (Type1, i.e., Sync. Signal) under a certain condition (Condition_Type2) for the purpose of setting a certain RS (Type2, i.e., CSI-RS) to the corresponding UE. Of course, it is possible to set the result. In addition to this, conditions for sending a measurement report (hereinafter referred to as MR) may also be set. The Condition_Type2 may be the same as or different from Condition_MR, and detailed conditions may be transmitted in the form of existing LTE A1 to A6.

If Condition_Type2 is satisfied, the UE may send a RS Type1 measurement report (RRC/MAC/PHY message) or RS Type2 configuration request message (RRC/MAC/PHY message). The serving base station receiving the report or request message from the terminal, if possible, sets RS Type2 to the corresponding terminal so that the terminal can measure or report on the corresponding RS. Of course,

In addition, in another embodiment, when the UE does not have such Condition_Type2 and does not have measurement settings for RS Type2 (i.e., CSI-RS), in any case where performance gain is expected, certain conditions (Condition_Type2) It goes without saying that if satisfies , RS Type 2 configuration may be requested.

In this way, the serving base station receiving the uplink signal transmission as a result of the set condition Condition_Type2 from the terminal, if it is necessary to also set the RS Type 2 of the specific neighboring base station (or base stations) to the corresponding terminal, directly to the neighboring base stations (via X2 interface, internet network, or any wired back-haul link) may request RS Type 2 configuration to the corresponding terminal. The RS Type 2 setting request signal transmitted from the serving base station to the neighboring base station includes resource information (frequency, time, antenna, beam information, offset, etc.) capable of setting the corresponding RS Type 2, terminal information (terminal ID, terminal used frequency, Time, antenna, beam information, offset, etc.) and serving cell information (serving cell ID, used frequency, time, antenna, beam information, offset, etc.) may be transmitted as well.

In addition, the neighboring base station receiving the uplink signal transmission as a result of the condition Condition_Type2 set from the terminal, if it is necessary to also set the RS Type 2 of the specific neighboring base station (or base stations) to the corresponding terminal, the corresponding terminal transmitted Resource information (frequency, time, antenna, beam) that can set the corresponding RS Type 2 through downlink transmission (Msg2 or Msg4) that can be transmitted by the base station during the RACH transmission procedure or by using other downlink resources transmittable to the corresponding terminal information, offset, etc.), terminal information (device ID, terminal used frequency, time, antenna, beam information, offset, etc.), and serving cell information (serving cell ID, used frequency, time, antenna, beam information, offset, etc.), etc. Of course, it can also be transmitted including.

Of course, the serving base station that has received the corresponding RS Type 2 setting information from the target base station can set the RS Type 2 of the serving base station and the target base station to the terminal.

The UE attempts to measure different RSs of different cells as configured, checks the conditions for transmitting the measurement report as configured based on the measurement results, and reports the measurement results when the conditions are satisfied.

<< Figure 17. RS Type2 configuration based on direct UE request and reply from serving cell >>

Referring to FIG. 17, the serving base station sets information about RS Type 1 to the terminal. The UE, which has received information on the RS Type 1, basically performs continuous measurement on the serving cell and neighboring cells for the corresponding RS (RS Type 1, i.e., Sync. Signal), and satisfies a certain condition (Condition_Type2) Then, uplink transmission including an RS Type2 configuration request is performed for the serving base station and the target base stations.

As can be seen in FIG. 17, the serving base station measures a specific RS (Type1, i.e., Sync. Signal) under a certain condition (Condition_Type2) for the purpose of setting a certain RS (Type2, i.e., CSI-RS) to the corresponding UE. Of course, it is possible to set the result. In addition to this, conditions for sending a measurement report (hereinafter referred to as MR) may also be set. The Condition_Type2 may be the same as or different from Condition_MR, and detailed conditions may be transmitted in the form of existing LTE A1 to A6.

If Condition_Type2 is satisfied, the UE may send a RS Type1 measurement report (RRC/MAC/PHY message) or RS Type2 configuration request message (RRC/MAC/PHY message). The serving or any neighboring base station receiving the report or request message from the terminal, if possible, sets RS Type2 to the corresponding terminal so that the terminal can measure or report on the corresponding RS. Of course,

Here, the terminal may send a measurement report for RS Type 1 to the serving base station (RRC / MAC / PHY message) or transmit a configuration request message for RS Type 2 (RRC / MAC / PHY message). In addition, the terminal may transmit preset RS measurement information received and measured from the neighboring base station, for example, RS Type 2 configuration request information including SS beam/block/burst/burst set ID. The RS Type 2 request information of the terminal to the neighboring base station may be transmitted using a random access procedure, or may be transmitted using a certain uplink channel transmittable by any neighboring network terminal if it is defined.

In addition, in another embodiment, when the UE does not have such Condition_Type2 and does not have measurement settings for RS Type2 (i.e., CSI-RS), in any case where performance gain is expected, certain conditions (Condition_Type2) Of course, the measurement report or RS Type 2 configuration request may be transmitted to the serving base station or the neighboring base station when satisfies .

In this way, the serving base station receiving the uplink signal transmission as a result of the set condition Condition_Type2 from the terminal, if it is necessary to also set the RS Type 2 of the specific neighboring base station (or base stations) to the corresponding terminal, directly to the neighboring base stations RS Type 2 configuration can be requested (through the X2 interface, through the internet network, or through any wired back-haul link). The RS Type 2 setting request signal transmitted from the serving base station to the neighboring base station includes resource information (frequency, time, antenna, beam information, offset, etc.) capable of setting the corresponding RS Type 2, terminal information (terminal ID, terminal used frequency, Time, antenna, beam information, offset, etc.) and serving cell information (serving cell ID, used frequency, time, antenna, beam information, offset, etc.) may be transmitted as well.

In addition, the neighboring base station receiving the uplink signal transmission as a result of the condition Condition_Type2 set from the terminal, if it is necessary to also configure the RS Type 2 of the specific neighboring base station (or base stations) to the corresponding terminal, the serving terminal to which the corresponding terminal belongs RS Type 2 configuration can be provided to the base station directly (through the X2 interface, through the internet network, or through any wired back-haul link). The RS Type 2 configuration request signal transmitted from the neighbor base station to the serving base station includes resource information (frequency, time, antenna, beam information, offset, etc.) capable of setting the corresponding RS Type 2, terminal information (terminal ID, terminal used frequency, Time, antenna, beam information, offset, etc.) and serving cell information (serving cell ID, used frequency, time, antenna, beam information, offset, etc.) may be transmitted as well.

The neighbor target base station that has received the RS Type 2 setting request from the serving base station can set the corresponding RS to the corresponding terminal, if possible, and transmit the corresponding setting information to the serving base station. The setting information includes resource information (frequency, time, antenna, beam information, offset, etc.) that can set the corresponding RS Type 2, terminal information (terminal ID, terminal used frequency, time, antenna, beam information, offset, etc.), and It goes without saying that information on a target cell to be set (cell ID, used frequency, time, antenna, beam information, offset, etc.) and the like can be transmitted.

Of course, the serving base station that has received the corresponding RS Type 2 setting information from the target base station can set the RS Type 2 of the serving base station and the target base station to the terminal.

The UE attempts to measure different RSs of different cells as configured, checks the conditions for transmitting the measurement report as configured based on the measurement results, and reports the measurement results when the conditions are satisfied.

Of course, several different CSI-RSs having the same or different characteristics, resources, beams, and purposes may be configured for a user.

<Measurement report triggering events using different RS measurement values>

[event-NR1]

[event NR2]

The tables below are intended to explain the description based on event (NR3), and it is desirable to understand that the tables below are connected to each other.

[event NR3]

The tables below are intended to explain the description based on event (NR4), and it is desirable to understand that the tables below are connected to each other.

[event NR4]

The tables below are intended to explain the description based on event (NR5), and it is desirable to understand that the tables below are connected to each other.

[event NR5]

The tables below are intended to explain the description based on event (NR6), and it is desirable to understand that the tables below are connected to each other.

[event NR6]

The tables below are intended to explain the description based on event (NR7), and it is desirable to understand that the tables below are connected to each other.

[event NR7]

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

The terminal may measure the performance degradation of the beam being used and use it to trigger a beam change procedure for changing to another beam. At this time, the procedure for determining the degradation of the beam being used is called the Beam Failure Detection procedure, and this procedure can be performed in the following manner.

Here, the beam may be any beam (base station beam, terminal beam, or a pair of base station beam and terminal beam) used by the terminal and the base station, or any beam group explicitly (or implicitly) used by the terminal and the base station. (set of beams).

Here, the beam may be a physical antenna configuration or a measurement unit of any UE (eg, SS block, SS burst, SS burst set, CSI-RS block, CSI-RS burst, or CSI-RS burst set).

1. L1 detection

- If the beam(s) measured by the physical layer satisfies Condition 1, beam failure is determined

- The physical layer transmits the corresponding indication to the upper layer for further operation

- The upper layer starts the beam recovery procedure after receiving the indication

2. L2 detection with L1 indication

- If the beam(s) measured by the physical layer satisfies Condition 1, the corresponding indication is transmitted to the upper layer

- The L2 layer receives one or more indications from the physical layer and determines beam failure and/or beam recovery triggering when the reception of the corresponding indications satisfies Condition 2

- L2 layer starts beam recovery procedure

3. L3 detection with L1 indication

- If the beam(s) measured by the physical layer satisfies Condition 1, the corresponding indication is transmitted to the upper layer

- The L3 layer receives one or more indications from the physical layer and determines beam failure and/or beam recovery triggering when the reception of the corresponding indications satisfies Condition 2

- L3 layer starts beam recovery procedure

Condition 1 above may be as follows:

- Beam(s) measurement < Threshold1

- Estimated DL signal reception error probability > N1 %

- Beam(s) measurement < Threshold1 (AND) any one beam measurement > Threshold 2

- Any set1 of beams measurement value previously agreed with the base station (or configured from the base station) < Threshold1

Condition 2 above may be as follows:

- Continuous N2 indication reception

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

- any one beam measurement value > Threshold 2

-Measurement value of any beam within any set2 of beams previously agreed with the base station (or configured from the base station) > Threshold2

- If any timer1 triggered right after the above condition1 is satisfied, expires

: The timer1 may be a value set by the terminal implementation.

: The timer1 may be a value configured by the base station

: The timer1 may be canceled when receiving any indication (i.e., In-sync-indicaiton) from the lower layer.

: The timer1 may be canceled when receiving any 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 all CSI-RS resource sets within a cell 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 with descriptions of each field included in [Table 1]. [Table 1aa] and [Table 1ab] are preferably understood as mutually interconnected contents.

At this time, CSI-RSs are set for each CSI-RS resource set, and each CSI-RS resource set has the same CSI-RS setting offset, CSI-RS scrambling ID, sequence generation setting, repetition, and density, and each CSI-RS resource set Antenna ports, Resource element mapping pattern, QCL information, and bandwidth part information of CSI-RS resources in the CSI-RS resource set are an embodiment that can be provided to the terminal in the form of a bit-map of the same value or different values. .

[Table 1]

[Table 1aa]

[Table 1ab]

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

In addition, it goes without saying that the CSI-RS transmission period may be set for each CSI-RS resource set rather than for each cell and may be set in the CSI-ResourceSet-RRM. In this case, different CSI-RS resource sets transmitted in a corresponding cell may be transmitted with different cycles, and the UE may receive different CSI-RS resource sets with different cycles accordingly.

The cell may transmit CSI-RSs having the same transmission slot offset (slotConfigOffset) within the same CSI-RS resource set, and such a transmission slot offset value may have a different value for each different CSI-RS resource set within the cell. there is. Using this, if the CSI-RS resource sets have different CSI-RS transmission slot offsets for each transmit/receive antenna bundle, for example, transmit/receive points (TRP, TRxP), which exist in different physical locations, the same period Of course, the UE can receive the CSI-RS resource sets by applying different reception slot offsets and the same reception period. In addition, if the CSI-RS resource sets have different frequency characteristics, for example, center frequency, frequency bandwidth, carrier frequency, etc., the cell has the same period while having different transmission slot offsets between these CSI-RS resource sets Of course, CSI-RS resources may be transmitted and the terminal may receive them.

In addition, it goes without saying that the transmission slot offset may be set in the CSI-ConfigCell in units of cells instead of units of CSI-RS resource sets. In this case, it means that CSI-RS resources and CSI-RS resource sets configured and transmitted within the corresponding cell all have the same transmission slot offset, and the terminal accordingly transmits the CSI transmitted by the corresponding cell with the same transmission slot offset. -RSs can be received.

If the repetition indicator is on, the network configures that the signal will be transmitted using the same antenna pattern and the same beam in the CSI-RS resources in the corresponding set, and the terminal changes the reception beam of the terminal in this CSI-RS resource set It is possible to measure received signal strength of a corresponding CSI-RS beam for different receive beams and measure channel quality. Of course, the corresponding indicator may be used as an indicator instructing to feed back the CSI-RS resource set ID (CSI-RS-ResourceSetId-RRM) when the UE implicitly feeds measurement information back to the base station.

If the repetition indicator is off, the network configures that signals will be transmitted using different antenna patterns and different beams in the CSI-RS resources in the corresponding CSI-RS resource set, and the terminal The reception beam of the terminal is fixed and received, and the received signal strength of the corresponding CSI-RS beam for the different transmission beams of the base station for the corresponding reception beam is measured and the channel quality can be measured. When the UE implicitly feeds back the measurement information to the base station, the indicator indicates not only the CSI-RS resource set ID (CSI-RS-ResourceSetId-RRM) but also the resource ID, for example, the bitmap sequence of the RE mapping pattern in which the feedback resource is set. , it can also be used as an indicator instructing to feed back the bitmap order of antenna ports.

In addition, of course, the repetition indicator may be set in the CSI-ConfigCell in units of cells instead of units of CSI-RS resource sets. In this case, it means that all CSI-RS resources and CSI-RS resource sets configured and transmitted in the corresponding cell are transmitted according to the same repetition indicator. If repetition is on and there are multiple CSI-RS resource sets, this sets that signals will be transmitted using the same antenna pattern and the same beam within 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 each different CSI-RS resource within one CSI-RS resource set, and can receive CSI-RSs transmitted by a corresponding cell. In addition, if repetition is on and several CSI-RS resource sets are set, 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 Of course, it can also be an indicator. In this case, the UE changes the Rx beam for each different CSI-RS resource in all CSI-RS resource sets and can receive CSI-RSs transmitted by a corresponding cell.

nrofRepeatadCSI-RS-Resources is the number of repetitions of CSI-RS resources indicating how many CSI-RS resources are transmitted using the same antenna configuration and the same beam to be configured within the corresponding CSI-RS resource set. Of course, the corresponding parameter may be set and transmitted only when repetition is on.

In addition, it goes without saying that the nrofRepeatadCSI-RS-Resources may be set in the CSI-ConfigCell in units of cells instead of units of CSI-RS resource sets. In this case, it may be possible to set how many CSI-RS resources existing in CSI-RS resource sets configured and transmitted within a corresponding cell are grouped together and transmitted using the same antenna configuration and the same beam.

nrofAntennaPortsBitmap is the number of antenna ports or configuration information used by CSI-RS resources transmitted within the corresponding CSI-RS resource set, and is set as one information when all resources within the CSI-RS resource set use the same antenna port and is transmitted It may be, of course, that when the resources in the set use different antenna ports, they may be transmitted in the form of a bit map of different information.

In addition, it goes without saying that the nrofAntennaPortsBitmap may be set in the CSI-ConfigCell in units of cells instead of units of CSI-RS resource sets. In this case, the number of antenna ports or configuration information used by CSI-RS resource sets configured and transmitted within the corresponding cell or CSI-RS resources present in each CSI-RS resource set, and all resources in the cell are the same antenna port When using, it may be set and transmitted as one piece of information, and CSI-RS resources in a CSI-RS resource set use the same antenna port, but when different antenna ports are used between CSI-RS resource sets, this setting Of course, it may be transmitted in the form of a bit map of different information about antenna ports configured for each set including or without an indicator indicating, and CSI-RS resources in a CSI-RS resource set use different antenna ports. In this case, of course, it may be transmitted in the form of a bit map of different antenna port information.

resourceElementMappingPatternBitmap is resource element configuration information used by CSI-RS resources transmitted within the corresponding CSI-RS resource set, and is set as one information when all resources within the CSI-RS resource set use the same resource element mapping pattern. It can be transmitted, and when resources in the CSI-RS resource set use different resource element mapping patterns, it can be transmitted in the form of a bit map of different information.

In addition, it goes without saying that the resourceElementMappingPatternBitmap may be set in the CSI-ConfigCell in units of cells instead of units of CSI-RS resource sets. In this case, resource element mapping pattern information or configuration information used by CSI-RS resource sets configured and transmitted within the corresponding cell or CSI-RS resources present in each CSI-RS resource set, and all resources within the cell are the same When resource element mapping pattern information is used, it may be set as one piece of information and transmitted. CSI-RS resources within a CSI-RS resource set use the same resource element mapping pattern, but different resource elements between CSI-RS resource sets In the case of using a mapping pattern, it can be transmitted in the form of a bit map of different information about the resource element mapping pattern set for each set including or without an indicator indicating such a setting, and of course, CSI-RS resource set within the CSI-RS resource set. When RS resources each use different resource element mapping patterns, it goes without saying that these different RE mapping pattern information may be transmitted in a bit map format.

qcl_SSB_info_Bitmap is information used to inform the QCL association of CSI-RS resources transmitted within the corresponding CSI-RS resource set with synchronization signal blocks in time, frequency, and spatial QCL relationships, and the id or QCL ID of the corresponding SS block Alternatively, a transmission config ID or the like may be used. When all resources in the CSI-RS resource set have a QCL association with the same SS block, they may be set as one piece of information and transmitted, and when resources in the CSI-RS resource set have a QCL association with different SS blocks, Of course, it may also be transmitted in the form of a bit map of other information.

In addition, it goes without saying that the qcl_SSB_info_Bitmap may be set in the CSI-ConfigCell in units of cells instead of units of CSI-RS resource sets. In this case, CSI-RS resource sets configured and transmitted within a corresponding cell or CSI-RS resources present in each CSI-RS resource set are information about a Sync Signal having a QCL association relationship, and all resources within the cell are the same In the case of an SS block and QCL association, it may be set as one piece of information and transmitted, and CSI-RS resources in a CSI-RS resource set have the same SS block and QCL association, but different SSs between CSI-RS resource sets When there is a QCL association with the block, it can be transmitted in the form of a bit map of different information about the SS block in the QCL association for each set including or without an indicator indicating such a setting, and of course, CSI-RS resource If the CSI-RS resources in the set are related to each other SS block and QCL, it is of course possible to transmit the different SS block information in the form of a bit map.

DensityBitmap is the density within the RE/port/PRB of CSI-RS resources transmitted within the corresponding CSI-RS resource set. When all resources within the CSI-RS resource set use the same antenna port, it is set as one piece of information and transmitted. And, of course, when the resources in the CSI-RS resource set use different densities, they may be transmitted in the form of a bit map of different information.

In addition, it goes without saying that the densityBitmap may be set in the CSI-ConfigCell in units of cells instead of units of CSI-RS resource sets. In this case, this is the density information used by the CSI-RS resource sets configured and transmitted within the cell or the CSI-RS resources present in each CSI-RS resource set, and all resources within the cell use the same density information. It can be set as one piece of information and transmitted. CSI-RS resources within a CSI-RS resource set use density, but when different densities are used between CSI-RS resource sets, an indicator indicating such a setting is included or an indicator Of course, it can be transmitted in the form of a bit map of different information about the density set for each set without the need, and when the CSI-RS resources in the CSI-RS resource set use different densities, the bit map of these different density information It goes without saying that it may be transmitted in a form.

bandwidthpartsBitmap is a parameter that includes information such as bandwidth part id, bandwidth, and frequency of CSI-RS resources transmitted within the corresponding CSI-RS resource set. One case in which all resources within the CSI-RS resource set use the same bandwidth part It may be set and transmitted as information of CSI-RS resource set, and may be transmitted in the form of a bit map of different information when resources in the CSI-RS resource set use different bandwidth parts.

In addition, of course, the bandwidthpartsBitmap may be set in the CSI-ConfigCell in units of cells instead of units of CSI-RS resource sets. In this case, it is bandwidthparts information used by CSI-RS resource sets configured and transmitted within the cell or CSI-RS resources present in each CSI-RS resource set, and all resources in the cell use the same bandwidthparts. It may be set and transmitted with the information of CSI-RS resource set, and CSI-RS resources in the CSI-RS resource set use bandwidth parts, but when different bandwidth parts are used between CSI-RS resource sets, an indicator indicating these settings is included or without an indicator. Of course, it can be transmitted in a bit map format of different information on bandwidth parts set for each set, and when CSI-RS resources in a CSI-RS resource set use different bandwidth parts, bit map format of these different bandwidth parts information Of course, it can also be transmitted to.

The csi-rs-TransmissionBW is a value of a bandwidth that informs the terminal of how wide a range in the frequency band the different CSI-RSs transmitted by the cell are transmitted, and is a starting point in the frequency band (reference point: loweast or highest frequency) and width (bandwidth), it may be an absolute value that informs the center point (ARFCN or center frequency or carrier number or carrier ID) and width (bandwidth) in the frequency band, or it may simply be a frequency band Of course, it may be a numerical value indicating the area of .

In addition, it goes without saying that the csi-rs-TransmissionBW may be set for each CSI-RS resource set rather than for each cell and may be set in the CSI-ResourceSet-RRM. In this case, it means that different CSI-RS resource sets transmitted within a corresponding cell may be transmitted with different transmission frequency bandwidths.

The csi-rs-MeasurementBW is a value that informs the UE of what frequency bandwidth size the UE can use to receive the CSI-RS transmitted by the cell, and is a starting point in the frequency band (reference point: loweast or highest frequency). ) and width, or an absolute number indicating the center point (ARFCN or center frequency or carrier number or carrier ID) and bandwidth in the frequency band. Of course, it may be a numerical value indicating the area.

In addition, when the csi-rs-MeasurementBW is simply a value indicating the width of a frequency band in which a UE will measure the corresponding CSI-RS, the value is the maximum measurable frequency bandwidth that can be received by the UE received from the capability information of the UE. Of course it could be.

In addition, when the csi-rs-MeasurementBW is simply a value indicating the width of a frequency band in which a UE will measure the corresponding CSI-RS and has a value smaller than the csi-rs-TransmissionBW, the UE performs the measurement of the cell The network may implicitly indicate that measurement is performed using a frequency band as large as the size of the csi-rs-MeasurementBW within the csi-rs-TransmissionBW to be transmitted. In this case, if the operating bandwidth in which the UE is operating falls within the csi-rs-TransmissionBW, the UE derives a cell measurement value by measuring the CSI-RS of the target cell by the size of the csi-rs-MeasurementBW within its own operating bandwidth Of course, the UE may select a frequency band having the size of csi-rs-MeasurementBW having the best performance for all frequency bands of the target cell that can be measured using a gap, etc., and select the corresponding csi-rs-MeasurementBW frequency band. Of course, the cell measurement value may be derived by measuring the CSI-RS of the target cell in . Alternatively, when the UE can know the bandwidth part information of the target cell through bandwidthpartsBitmap, etc., the terminal selects a bandwidth part located in the same or closest frequency position as the active bandwidth part of the serving cell to which it belongs, and transmits the CSI- Of course, the cell measurement value may be derived by measuring RS as much as the corresponding csi-rs-MeasurementBW frequency band.

In addition, it goes without saying that the csi-rs-MeasurementBW may be set for each CSI-RS resource set instead of for each cell and may be set in the CSI-ResourceSet-RRM. In this case, it means that the terminal may receive and measure 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 all CSI-RS resources in a cell have the same CSI-RS transmission period, the same CSI-RS setting offset, subcarrier spacing, and CSI-RS transmission BW and CSI-RS reception BW.

The following [Table 2] is according to this embodiment, and the following [Table 2aa] and [Table 2ab] add descriptions of each field included in [Table 2]. An explanation of each field included in [Table 2] is added. [Table 2aa] and [Table 2ab] are preferably understood as mutually interconnected contents.

At this time, CSI-RSs are set for each CSI-RS resource, and for each CSI-RS resource, CSI-RS scrambling ID, sequence generation setting, repetition, density, antenna ports, resource element mapping pattern, QCL information, bandwidth part information, etc. is an example with

[Table 2]

[Table 2aa]

[Table 2ab]

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

In addition, it goes without saying that the CSI-RS transmission period may be set for each CSI-RS resource instead of for each cell and may be set within the CSI-Resource-RRM. In this case, different CSI-RS resources transmitted in a corresponding cell may be transmitted with different cycles, and the UE may receive different CSI-RS resources with different cycles accordingly.

The cell may transmit CSI-RS resources having different transmission slot offsets (slotConfigOffset) for each CSI-RS resource. Accordingly, the UE may receive different CSI-RS resources with different transmission slot offsets.

In addition, of course, the transmission slot offset may be set in the CSI-ConfigCell in units of cells instead of units of CSI-RS resources. In this case, it means that all CSI-RS resources configured and transmitted in the corresponding cell have the same transmission slot offset, and the UE can receive CSI-RSs transmitted by the corresponding cell with the same transmission slot offset accordingly. .

If the repetition indicator is on, the network configures that the signal will be transmitted using the same antenna pattern and the same beam in the CSI-RS resources in the corresponding cell, and the terminal changes the reception beam of the terminal in this cell to receive different reception A received signal strength of a corresponding CSI-RS beam for a beam may be measured and channel quality may be measured. Of course, the corresponding indicator may be used as an indicator implicitly indicating that the UE does not need to feed measurement information back to the base station.

If the repetition indicator is off, the network configures that the signal will be transmitted using different antenna patterns and different beams in the CSI-RS resources in the corresponding cell, and the terminal fixes the reception beam of the terminal in this cell to receive In addition, the received signal strength of the corresponding CSI-RS beam for different transmission beams of the base station for the corresponding received beam may be measured and the channel quality may be measured. The indicator implicitly feeds back the direct CSI-RS resource ID (CSI-RS-ResourceId-RRM) or implicit resource ID, for example, the order in which the CSI-RE resource is set, when the UE feeds back measurement information to the base station. Of course, it can also be used as an indicator to instruct what to do.

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

nrofRepeatadCSI-RS-Resources is the number of repetitions of CSI-RS resources indicating how many CSI-RS resources are to be transmitted using the same antenna configuration and the same beam in a corresponding cell. Of course, the corresponding parameter may be set and transmitted only when repetition is on.

nrofAntennaPorts is the number of antenna ports used by a CSI-RS resource transmitted within a corresponding cell or configuration information.

In addition, it goes without saying that the nrofAntennaPorts may be set in the CSI-ConfigCell in units of cells instead of units of CSI-RS resources. In this case, it is the number of antenna ports or configuration information used by CSI-RS resources configured and transmitted within the cell, and when all resources within the cell use the same antenna port, it may be set and transmitted as one piece of information, and CSI -If the RS resources use different antenna ports, it may be transmitted in the form of a bit map of different information about the antenna port configured for each CSI-RS resource with or without an indicator indicating such a setting. Of course.

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

In addition, of course, the resourceElementMappingPattern may be set in the CSI-ConfigCell in units of cells instead of units of CSI-RS resources. In this case, resourceElementMappingPattern is resource element configuration information used by CSI-RS resources transmitted within the cell, and when all resources within the cell use the same resource element mapping pattern, it may be set as one piece of information and transmitted, Of course, when resources within a cell use different resource element mapping patterns, different pieces of information may be transmitted in a bit map format.

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

In addition, it goes without saying that the qcl_SSB_info may be set in the CSI-ConfigCell in units of cells instead of units of CSI-RS resources. In this case, each CSI-RS resource set and transmitted in the cell is information about the Sync Signal in QCL association, and if all resources in the cell are in QCL association with the same SS block, it is set as one information It can also be transmitted, and when the CSI-RS resources have a QCL association with each other SS block, it can be transmitted in the form of a bit map of these different SS block information.

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

In addition, the densityBitmap may be set in the CSI-ConfigCell in units of cells instead of units of CSI-RS resources. In this case, this is the density information used by the CSI-RS resources set and transmitted within the cell, and when all resources within the cell use the same density information, it may be set and transmitted as one piece of information, and the CSI-RS resources Of course, when different densities are used, these different density information can be transmitted in the form of a bit map.

Bandwidthparts is a parameter including information such as bandwidth part id, bandwidth, and frequency of CSI-RS resource.

In addition, of course, the bandwidth parts may be set in the CSI-ConfigCell in units of cells instead of units of CSI-RS resources. In this case, it is bandwidthparts information used by CSI-RS resources configured and transmitted within the cell, and when all resources within the cell use the same bandwidthparts, it may be set and transmitted as one piece of information, and each CSI-RS resource In the case of using different bandwidth parts, it goes without saying that information on these different bandwidth parts may be transmitted in a bit map format.

The csi-rs-TransmissionBW is a value of a bandwidth that informs the terminal of how wide a range in the frequency band the different CSI-RSs transmitted by the cell are transmitted, and is a starting point in the frequency band (reference point: loweast or highest frequency) and width (bandwidth), it may be an absolute value that informs the center point (ARFCN or center frequency or carrier number or carrier ID) and width (bandwidth) in the frequency band, or it may simply be a frequency band Of course, it may be a numerical value indicating the area of .

In addition, it goes without saying that the csi-rs-TransmissionBW may be set for each CSI-RS resource instead of for each cell and may be set in the CSI-Resource-RRM. In this case, it means that different CSI-RS resources transmitted within a corresponding cell may be transmitted with different transmission frequency bandwidths.

The csi-rs-MeasurementBW is a value that informs the UE of what frequency bandwidth size the UE can use to receive the CSI-RS transmitted by the cell, and is a starting point in the frequency band (reference point: loweast or highest frequency). ) and width, or an absolute number indicating the center point (ARFCN or center frequency or carrier number or carrier ID) and bandwidth in the frequency band. Of course, it may be a numerical value indicating the area.

In addition, when the csi-rs-MeasurementBW is simply a value indicating the width of a frequency band in which a UE will measure the corresponding CSI-RS, the value is the maximum measurable frequency bandwidth that can be received by the UE received from the capability information of the UE. Of course it could be.

In addition, when the csi-rs-MeasurementBW is simply a value indicating the width of a frequency band in which a UE will measure the corresponding CSI-RS and has a value smaller than the csi-rs-TransmissionBW, the UE performs the measurement of the cell The network may implicitly indicate that measurement is performed using a frequency band as large as the size of the csi-rs-MeasurementBW within the csi-rs-TransmissionBW to be transmitted. In this case, if the operating bandwidth in which the UE is operating falls within the csi-rs-TransmissionBW, the UE derives a cell measurement value by measuring the CSI-RS of the target cell by the size of the csi-rs-MeasurementBW within its own operating bandwidth Of course, the UE may select a frequency band having the size of csi-rs-MeasurementBW having the best performance for all frequency bands of the target cell that can be measured using a gap, etc., and select the corresponding csi-rs-MeasurementBW frequency band. Of course, the cell measurement value may be derived by measuring the CSI-RS of the target cell in . Alternatively, when the UE can know the bandwidth part information of the target cell through bandwidthpartsBitmap, etc., the terminal selects a bandwidth part located in the same or closest frequency position as the active bandwidth part of the serving cell to which it belongs, and transmits the CSI- Of course, the cell measurement value may be derived by measuring RS as much as the corresponding csi-rs-MeasurementBW frequency band.

In addition, it goes without saying that the csi-rs-MeasurementBW may be set for each CSI-RS resource instead of for each cell and may be set in the CSI-Resource-RRM. In this case, it means that the UE may receive and measure 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 all CSI-RS resource sets have the same CSI-RS transmission period, the same CSI-RS setting offset, subcarrier spacing, and CSI-RS transmission BW and CSI-RS reception BW.

The following [Table 3] is according to this embodiment, and the following [Table 3aa] and [Table 3ab] add descriptions of each field included in [Table 3]. [Table 3aa] and [Table 3ab] are preferably understood as mutually interconnected contents.

At this time, CSI-RSs are set for each CSI-RS resource, and for each CSI-RS resource, CSI-RS scrambling ID, sequence generation setting, repetition, density, antenna ports, resource element mapping pattern, QCL information, bandwidth part information, etc. is an example with

[Table 3]

[Table 3aa]

[Table 3ab]

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

In addition, it goes without saying that the CSI-RS transmission period may be set for each CSI-RS resource instead of for each CSI-RS resource set and may be set within the CSI-Resource-RRM. In this case, different CSI-RS resources transmitted within the corresponding CSI-RS resource set may be transmitted with different cycles, and the UE may receive different CSI-RS resources with different cycles accordingly.

The CSI-RS resource set may transmit CSI-RS resources having different transmission slot offsets (slotConfigOffset) for each CSI-RS resource. Accordingly, the UE may receive different CSI-RS resources with different transmission slot offsets.

In addition, the transmission slot offset may be set in CSI-ResourceSet-RRM in units of CSI-RS resource sets instead of units of CSI-RS resources. In this case, it means that all CSI-RS resources configured and transmitted within the corresponding CSI-RS resource set have the same transmission slot offset, and the terminal accordingly transmits the corresponding CSI-RS resource set with the same transmission slot offset. CSI-RSs can be received.

If the repetition indicator is on, the network configures that the signal will be transmitted using the same antenna pattern and the same beam in the CSI-RS resources in the corresponding CSI-RS resource set, and the terminal is configured to transmit the signal in the CSI-RS resource set. While changing the reception beam, the reception signal strength of the corresponding CSI-RS beam for different reception beams can be measured and the channel quality can be measured. Of course, the corresponding indicator may be used as an indicator implicitly indicating that the UE does not need to feed measurement information back to the base station.

If the repetition indicator is off, the network configures that signals will be transmitted using different antenna patterns and different beams in the CSI-RS resources in the corresponding CSI-RS resource set, and the terminal The reception beam of the terminal is fixed and received, and the received signal strength of the corresponding CSI-RS beam for the different transmission beams of the base station for the corresponding reception beam is measured and the channel quality can be measured. The indicator implicitly feeds back the direct CSI-RS resource ID (CSI-RS-ResourceId-RRM) or implicit resource ID, for example, the order in which the CSI-RE resource is set, when the UE feeds back measurement information to the base station. Of course, it can also be used as an indicator to instruct what to do.

In addition, of course, the repetition indicator may be set in CSI-Resource-RRM in CSI-RS resource units instead of CSI-RS resource set units. In this case, it means that the CSI-RS resource including the corresponding repetition indicator is being transmitted using the same antenna configuration and beam as the CSI-RS resource set immediately before.

nrofRepeatadCSI-RS-Resources is the number of repetitions of CSI-RS resources indicating how many CSI-RS resources are transmitted using the same antenna configuration and the same beam to be configured within the corresponding CSI-RS resource set. Of course, the corresponding parameter may be set and transmitted only when repetition is on.

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

In addition, it goes without saying that the nrofAntennaPorts may be set in CSI-ResourceSet-RRM in units of CSI-RS resource sets instead of units of CSI-RS resources. In this case, the number of antenna ports or configuration information used by CSI-RS resources configured and transmitted within the corresponding CSI-RS resource set, and when all resources within the CSI-RS resource set use the same antenna port, as one information It may be configured and transmitted, and when the CSI-RS resources use different antenna ports, an indicator indicating such a setting is included or transmitted in a bit map format of different information about the antenna port configured for each CSI-RS resource without an indicator Of course it could be.

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

In addition, the resourceElementMappingPattern may be set in CSI-ResourceSet-RRM in units of CSI-RS resource sets instead of units of CSI-RS resources. In this case, resourceElementMappingPattern is configuration information of resource elements used by CSI-RS resources transmitted within the corresponding CSI-RS resource set, and is one piece of information when all resources within the CSI-RS resource set use the same resource element mapping pattern. It may be set and transmitted, and when resources in the CSI-RS resource set use different resource element mapping patterns, it may be transmitted in the form of a bit map of different information.

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

In addition, it goes without saying that the qcl_SSB_info may be set in CSI-ResourceSet-RRM in units of CSI-RS resource sets instead of units of CSI-RS resources. In this case, each CSI-RS resource set and transmitted within the corresponding CSI-RS resource set is information on the Sync Signal in QCL association, and all resources in the CSI-RS resource set are in QCL association with the same SS block If there is, it may be set and transmitted as one piece of information, and if the CSI-RS resources have a QCL association with each other SS block, they may be transmitted in the form of a bit map of these different SS block information.

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

In addition, it goes without saying that the densityBitmap may be set in CSI-ResourceSet-RRM in units of CSI-RS resource sets instead of units of CSI-RS resources. In this case, it is the density information used by the CSI-RS resources set and transmitted within the corresponding CSI-RS resource set, and when all resources within the CSI-RS resource set use the same density information, it is set as one information and transmitted. Also, when CSI-RS resources use different densities, it is of course possible to transmit these different density information in the form of a bit map.

Bandwidthparts is a parameter including information such as bandwidth part id, bandwidth, and frequency of CSI-RS resource.

In addition, it goes without saying that the bandwidth parts may be set in CSI-ResourceSet-RRM in units of CSI-RS resource sets rather than units of CSI-RS resources. In this case, it is bandwidthparts information used by CSI-RS resources configured and transmitted within the corresponding CSI-RS resource set, and when all resources within the CSI-RS resource set use the same bandwidthparts, it may be set as one piece of information and transmitted. And, of course, when CSI-RS resources use different bandwidth parts, each of these different bandwidth parts information may be transmitted in a bit map format.

The csi-rs-TransmissionBW is a value of a bandwidth that informs the terminal of how wide a range the different CSI-RSs transmitted by the CSI-RS resource set are transmitted in a frequency band, and is a reference point in the frequency band. : It may be an absolute number indicating the lowest or highest frequency) and width, or an absolute number indicating the center point (ARFCN or center frequency or carrier number or carrier ID) and bandwidth in the frequency band. , may be simply a numerical value indicating the width of the frequency band.

In addition, it goes without saying that the csi-rs-TransmissionBW may be set for each CSI-RS resource instead of for each CSI-RS resource set and set within the CSI-Resource-RRM. In this case, it means that different CSI-RS resources transmitted within the corresponding CSI-RS resource set may be transmitted with different transmission frequency bandwidths.

The csi-rs-MeasurementBW is a value that informs the UE of what frequency bandwidth size the UE can use to receive the CSI-RS transmitted by the CSI-RS resource set, and is a starting point in the frequency band (reference point: It may be an absolute number indicating the lowest or highest frequency) and width, or an absolute number indicating the center point (ARFCN or center frequency or carrier number or carrier ID) and bandwidth in the frequency band. It goes without saying that it may simply be a numerical value indicating the width of a frequency band.

In addition, when the csi-rs-MeasurementBW is simply a value indicating the width of a frequency band in which a UE will measure the corresponding CSI-RS, the value is the maximum measurable frequency bandwidth that can be received by the UE received from the capability information of the UE. Of course it could be.

In addition, when the csi-rs-MeasurementBW is simply a value indicating the width of a frequency band in which a UE will measure the corresponding CSI-RS and has a value smaller than the csi-rs-TransmissionBW, the UE is responsible for the CSI-RS resource set The network may implicitly indicate that measurement is performed using a frequency band as large as the size of the csi-rs-MeasurementBW within the csi-rs-TransmissionBW transmitted by the CSI-RS resource set. In this case, if the operating bandwidth in which the UE operates belongs to the csi-rs-TransmissionBW, the UE measures the CSI-RS of the target CSI-RS resource set by the size of the csi-rs-MeasurementBW within its own operating bandwidth, and then measures the CSI-RS of the CSI-RS resource set. -Of course, the RS resource set measurement value can be derived, or the terminal has the best performance for all frequency bands of the target CSI-RS resource set that can be measured using a gap, etc. Of course, the CSI-RS resource set measurement value may be derived by selecting a band and measuring the CSI-RS of the target CSI-RS resource set in the corresponding csi-rs-MeasurementBW frequency band. Alternatively, if the terminal can know the bandwidth part information of the target CSI-RS resource set through bandwidthpartsBitmap, etc., the terminal selects a bandwidth part in the same or closest frequency position as the active bandwidth part of the serving CSI-RS resource set to which it belongs Of course, the CSI-RS resource set measurement value may be derived by measuring the CSI-RS transmitted in the corresponding bandwidth part as much as the corresponding csi-rs-MeasurementBW frequency band.

In addition, it goes without saying that the csi-rs-MeasurementBW may be set for each CSI-RS resource instead of for each CSI-RS resource set and set within the CSI-Resource-RRM. In this case, it means that the UE may receive and measure CSI-RS with different reception frequency bandwidths for different CSI-RS resources and derive a CSI-RS resource set measurement value.

<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 this embodiment, and the following [Table 4aa] and [Table 4ab] add descriptions on each field included in [Table 4]. [Table 4aa] and [Table 4ab] are preferably understood as mutually interconnected contents.

CSI-RS resource sets exist within a cell, and CSI-RS resources within one resource set may have the same CSI-RS configuration offset, RS scrambling ID, sequence generation configuration, repetition, density, bandwidth part information, and the like. In this case, CSI-RSs are set for each CSI-RS resource, and each CSI-RS resource may have CSI-antenna ports, Resource element mapping pattern, QCL information, and the like.

[Table 4]

[Table 4aa]

[Table 4ab]

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

In addition, it goes without saying that the CSI-RS transmission period may be set for each CSI-RS resource set rather than for each cell and may be set in the CSI-ResourceSet-RRM. In this case, different CSI-RS resource sets transmitted in a corresponding cell may be transmitted with different cycles, and the UE may receive different CSI-RS resource sets with different cycles accordingly.

In addition, it goes without saying that the CSI-RS transmission period may be set for each CSI-RS resource instead of for each cell and may be set within the CSI-Resource-RRM. In this case, different CSI-RS resources transmitted in a corresponding cell may be transmitted with different cycles, and the UE may receive different CSI-RS resources with different cycles accordingly.

The cell may transmit CSI-RSs having the same transmission slot offset (slotConfigOffset) within the same CSI-RS resource set, and such a transmission slot offset value may have a different value for each different CSI-RS resource set within the cell. there is. Using this, if the CSI-RS resource sets have different CSI-RS transmission slot offsets for each transmit/receive antenna bundle, for example, transmit/receive points (TRP, TRxP), which exist in different physical locations, the same period Of course, the UE can receive the CSI-RS resource sets by applying different reception slot offsets and the same reception period. In addition, if the CSI-RS resource sets have different frequency characteristics, for example, center frequency, frequency bandwidth, carrier frequency, etc., the cell has the same period while having different transmission slot offsets between these CSI-RS resource sets Of course, CSI-RS resources may be transmitted and the terminal may receive them.

In addition, it goes without saying that the transmission slot offset may be set in the CSI-ConfigCell in units of cells instead of units of CSI-RS resource sets. In this case, it means that CSI-RS resources and CSI-RS resource sets configured and transmitted within the corresponding cell all have the same transmission slot offset, and the terminal accordingly transmits the CSI transmitted by the corresponding cell with the same transmission slot offset. -RSs can be received.

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

If the repetition indicator is on, the network configures that the signal will be transmitted using the same antenna pattern and the same beam in the CSI-RS resources in the corresponding set, and the terminal changes the reception beam of the terminal in this CSI-RS resource set It is possible to measure received signal strength of a corresponding CSI-RS beam for different receive beams and measure channel quality. Of course, the corresponding indicator may be used as an indicator instructing to feed back the CSI-RS resource set ID (CSI-RS-ResourceSetId-RRM) when the UE implicitly feeds measurement information back to the base station.

If the repetition indicator is off, the network configures that signals will be transmitted using different antenna patterns and different beams in the CSI-RS resources in the corresponding CSI-RS resource set, and the terminal The reception beam of the terminal is fixed and received, and the received signal strength of the corresponding CSI-RS beam for the different transmission beams of the base station for the corresponding reception beam is measured and the channel quality can be measured. When the UE implicitly feeds back the measurement information to the base station, the indicator indicates not only the CSI-RS resource set ID (CSI-RS-ResourceSetId-RRM) but also the resource ID, for example, the bitmap sequence of the RE mapping pattern in which the feedback resource is set. , it can also be used as an indicator instructing to feed back the bitmap order of antenna ports.

In addition, of course, the repetition indicator may be set in the CSI-ConfigCell in units of cells instead of units of CSI-RS resource sets. In this case, it means that all CSI-RS resources and CSI-RS resource sets configured and transmitted in the corresponding cell are transmitted according to the same repetition indicator. If repetition is on and there are multiple CSI-RS resource sets, this sets that signals will be transmitted using the same antenna pattern and the same beam within 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 each different CSI-RS resource within one CSI-RS resource set, and can receive CSI-RSs transmitted by a corresponding cell. In addition, if repetition is on and several CSI-RS resource sets are set, 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 Of course, it can also be an indicator. In this case, the UE changes the Rx beam for each different CSI-RS resource in all CSI-RS resource sets and can receive CSI-RSs transmitted by a corresponding cell.

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

nrofRepeatadCSI-RS-Resources is the number of repetitions of CSI-RS resources indicating how many CSI-RS resources are transmitted using the same antenna configuration and the same beam to be configured within the corresponding CSI-RS resource set. Of course, the corresponding parameter may be set and transmitted only when repetition is on.

In addition, it goes without saying that the nrofRepeatadCSI-RS-Resources may be set in the CSI-ConfigCell in units of cells instead of units of CSI-RS resource sets. In this case, it may be possible to set how many CSI-RS resources existing in CSI-RS resource sets configured and transmitted within a corresponding cell are grouped together and transmitted using the same antenna configuration and the same beam.

nrofAntennaPorts is the number of antenna ports used by a CSI-RS resource transmitted within a corresponding cell or configuration information.

In addition, it goes without saying that the nrofAntennaPorts may be set in the CSI-ConfigCell in units of cells instead of units of CSI-RS resources. In this case, it is the number of antenna ports or configuration information used by CSI-RS resources configured and transmitted within the cell, and when all resources within the cell use the same antenna port, it may be set and transmitted as one piece of information, and CSI -If the RS resources use different antenna ports, it may be transmitted in the form of a bit map of different information about the antenna port configured for each CSI-RS resource with or without an indicator indicating such a setting. Of course.

In addition, it goes without saying that the nrofAntennaPorts may be set in CSI-ResourceSet-RRM in units of CSI-RS resource sets instead of units of CSI-RS resources. nrofAntennaPorts is the number of antenna ports used by CSI-RS resources transmitted within the corresponding CSI-RS resource set or configuration information. When all resources within the CSI-RS resource set use the same antenna port, it is set as one information and transmitted. It may be, of course, that when the resources in the set use different antenna ports, they may be transmitted in the form of a bit map of different information.

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

In addition, the resourceElementMappingPattern may be set in CSI-ResourceSet-RRM in CSI-RS resource set units instead of CSI-RS resource units. resourceElementMappingPattern is the configuration information of the resource element used by the CSI-RS resources transmitted within the corresponding CSI-RS resource set, and is set as one information when all resources within the CSI-RS resource set use the same resource element mapping pattern. and may be transmitted, and of course may be transmitted in the form of a bit map of different information when resources in the CSI-RS resource set use different resource element mapping patterns.

In addition, of course, the resourceElementMappingPattern may be set in the CSI-ConfigCell in units of cells instead of units of CSI-RS resources. In this case, resource element mapping pattern information or configuration information used by CSI-RS resources configured and transmitted within the corresponding cell or CSI-RS resources existing within each CSI-RS resource set, and all resources within the cell are the same resource When element mapping pattern information is used, it may be set as one piece of information and transmitted. CSI-RS resources within a CSI-RS resource set use the same resource element mapping pattern, but different resource element mappings between CSI-RS resource sets When a pattern is used, it can be transmitted in the form of a bit map of different information about the resource element mapping pattern set for each set including or without an indicator indicating such a setting, as well as the CSI-RS within the CSI-RS resource set. When resources use different resource element mapping patterns, each of these different RE mapping pattern information may be transmitted in a bit map format.

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

In addition, it goes without saying that the qcl_SSB_info_Bitmap may be set in CSI-ResourceSet-RRM in units of CSI-RS resource sets instead of units of CSI-RS resources. qcl_SSB_info_Bitmap is information used to inform the QCL association of CSI-RS resources transmitted within the corresponding CSI-RS resource set with synchronization signal blocks in time, frequency, and spatial QCL relationships, and the id or QCL ID of the corresponding SS block Alternatively, a transmission config ID or the like may be used. When all resources in the CSI-RS resource set have a QCL association with the same SS block, they may be set as one piece of information and transmitted, and when resources in the CSI-RS resource set have a QCL association with different SS blocks, Of course, it may also be transmitted in the form of a bit map of other information.

In addition, it goes without saying that the qcl_SSB_info may be set in the CSI-ConfigCell in units of cells instead of units of CSI-RS resources. In this case, CSI-RS resources configured and transmitted within the corresponding cell or CSI-RS resources present in each CSI-RS resource set are information about the Sync Signal in the QCL association relationship, and all resources within the cell are the same SS Block and QCL association can be set as one piece of information and transmitted. CSI-RS resources within a CSI-RS resource set have the same SS block and QCL association, but different SS blocks between CSI-RS resource sets In the case of a QCL association with, of course, it may be transmitted in the form of a bit map of different information about the SS block in the QCL association for each set including or without an indicator indicating such a setting, and CSI-RS resource set Of course, when my CSI-RS resources have QCL associations with different SS blocks, these different SS block information may be transmitted in the form of a bit map.

Density is the density within the RE/port/PRB of CSI-RS resources transmitted within the corresponding CSI-RS resource set. When all resources within the CSI-RS resource set use the same antenna port, one information is set and transmitted. And, of course, when the resources in the CSI-RS resource set use different densities, they may be transmitted in the form of a bit map of different information.

In addition, the density may be set within the CSI-ConfigCell in units of cells instead of units of CSI-RS resource sets. In this case, this is the density information used by the CSI-RS resource sets configured and transmitted within the cell or the CSI-RS resources present in each CSI-RS resource set, and all resources within the cell use the same density information. It can be set as one piece of information and transmitted. CSI-RS resources within a CSI-RS resource set use density, but when different densities are used between CSI-RS resource sets, an indicator indicating such a setting is included or an indicator Of course, it can be transmitted in the form of a bit map of different information about the density set for each set without the need, and when the CSI-RS resources in the CSI-RS resource set use different densities, the bit map of these different density information It goes without saying that it may be transmitted in a form.

In addition, the density may be set in CSI-Resource-RRM in units of CSI-RS resources instead of units of CSI-RS resource sets.

Bandwidthparts information is a parameter including information such as bandwidth part id, bandwidth, frequency, etc. of CSI-RS resources transmitted within the corresponding CSI-RS resource set. When all resources within the CSI-RS resource set use the same bandwidth part It may be set and transmitted as one piece of information, and of course, it may be transmitted in the form of a bit map of different pieces of information when resources in the CSI-RS resource set use different bandwidth parts.

In addition, it goes without saying that the bandwidth parts may be set in the CSI-ConfigCell in units of cells instead of units of CSI-RS resource sets. In this case, it is bandwidthparts information used by CSI-RS resource sets configured and transmitted within the cell or CSI-RS resources present in each CSI-RS resource set, and all resources in the cell use the same bandwidthparts. It may be set and transmitted with the information of CSI-RS resource set, and CSI-RS resources in the CSI-RS resource set use bandwidth parts, but when different bandwidth parts are used between CSI-RS resource sets, an indicator indicating these settings is included or without an indicator. Of course, it can be transmitted in a bit map format of different information on bandwidth parts set for each set, and when CSI-RS resources in a CSI-RS resource set use different bandwidth parts, bit map format of these different bandwidth parts information Of course, it can also be transmitted to.

In addition, it goes without saying that the bandwidth parts may be set in CSI-Resource-RRM in CSI-RS resource units instead of CSI-RS resource set units.

The csi-rs-TransmissionBW is a value of a bandwidth that informs the terminal of how wide a range in the frequency band the different CSI-RSs transmitted by the cell are transmitted, and is a starting point in the frequency band (reference point: loweast or highest frequency) and width (bandwidth), it may be an absolute value that informs the center point (ARFCN or center frequency or carrier number or carrier ID) and width (bandwidth) in the frequency band, or it may simply be a frequency band Of course, it may be a numerical value indicating the area of .

In addition, it goes without saying that the csi-rs-TransmissionBW may be set for each CSI-RS resource set rather than for each cell and may be set in the CSI-ResourceSet-RRM. In this case, it means that different CSI-RS resource sets transmitted within a corresponding cell may be transmitted with different transmission frequency bandwidths.

The csi-rs-MeasurementBW is a value that informs the UE of what frequency bandwidth size the UE can use to receive the CSI-RS transmitted by the cell, and is a starting point in the frequency band (reference point: loweast or highest frequency). ) and width, or an absolute number indicating the center point (ARFCN or center frequency or carrier number or carrier ID) and bandwidth in the frequency band. Of course, it may be a numerical value indicating the area.

In addition, when the csi-rs-MeasurementBW is simply a value indicating the width of a frequency band in which a UE will measure the corresponding CSI-RS, the value is the maximum measurable frequency bandwidth that can be received by the UE received from the capability information of the UE. Of course it could be.

In addition, when the csi-rs-MeasurementBW is simply a value indicating the width of a frequency band in which a UE will measure the corresponding CSI-RS and has a value smaller than the csi-rs-TransmissionBW, the UE performs the measurement of the cell The network may implicitly indicate that measurement is performed using a frequency band as large as the size of the csi-rs-MeasurementBW within the csi-rs-TransmissionBW to be transmitted. In this case, if the operating bandwidth in which the UE is operating falls within the csi-rs-TransmissionBW, the UE derives a cell measurement value by measuring the CSI-RS of the target cell by the size of the csi-rs-MeasurementBW within its own operating bandwidth Of course, the UE may select a frequency band having the size of csi-rs-MeasurementBW having the best performance for all frequency bands of the target cell that can be measured using a gap, etc., and select the corresponding csi-rs-MeasurementBW frequency band. Of course, the cell measurement value may be derived by measuring the CSI-RS of the target cell in . Alternatively, when the UE can know the bandwidth part information of the target cell through bandwidthpartsBitmap, etc., the terminal selects a bandwidth part located in the same or closest frequency position as the active bandwidth part of the serving cell to which it belongs, and transmits the CSI- Of course, the cell measurement value may be derived by measuring RS as much as the corresponding csi-rs-MeasurementBW frequency band.

In addition, it goes without saying that the csi-rs-MeasurementBW may be set for each CSI-RS resource set instead of for each cell and may be set in the CSI-ResourceSet-RRM. In this case, it means that the terminal may receive and measure CSI-RS with different reception frequency bandwidths for different CSI-RS resource sets and derive cell measurement values.

In addition, it goes without saying that the csi-rs-MeasurementBW may be set for each CSI-RS resource instead of for each cell and may be set in the CSI-Resource-RRM. In this case, it means that the UE may receive and measure 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.

Referring to FIG. 18A , a terminal 1800 may include a transmission/reception unit 1810 for transmitting and receiving signals and a control unit 1830. Through the transceiver 1810, the terminal 1800 may transmit and/or receive signals, information, messages, and the like. The controller 1830 may control overall operations of the terminal 1800. The controller 1830 may include at least one processor. The control unit 1830 may control the operation of the terminal described above with reference to FIGS. 1 to 17 .

In addition, the control unit 1830 receives RS configuration information transmitted by the base station, specifies a resource to transmit the RS according to the configuration information, and measures the RS in the corresponding resource. In addition, if it is determined that the measurement of the RS satisfies a certain condition, based on the subsequent operation triggered by the condition, for example, a measurement report result is transmitted to the serving base station or another RS is configured to the serving base station or a neighboring base station. can request

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

Referring to FIG. 18B, the terminal transmits CSI-RS configuration information through a broadcast channel (PBCH), a control channel (PDCCH), and a data channel (PDSCH) through system information (SystemInfo) and messages (PHY/MAC/RLC/RRC). can be received in the form of The terminal receiving the corresponding CSI-RS information can self-identify the CSI-RS reception resource by using various information such as offset information, periodicity, measurement gap, and window included in the reception information.

A UE that has identified a CSI-RS reception resource can receive and measure CSI-RS information from that resource, and if the result of reception and measurement satisfies a pre-set condition, uplink transmission is performed on the corresponding configuration resource (PUCCH/ PUSCH/PRACH) can be used for transmission.

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

Referring to FIG. 18C, the terminal transmits CSI-RS configuration information through a broadcast channel (PBCH), a control channel (PDCCH), and a data channel (PDSCH) through system information (SystemInfo) and messages (PHY/MAC/RLC/RRC). can be received in the form of The terminal receiving the corresponding CSI-RS information can self-identify the CSI-RS reception resource by using various information such as offset information, periodicity, measurement gap, and window included in the reception information.

A UE that has identified CSI-RS reception resources receives a CSI-RS with the best performance if the performance is guaranteed among all CSI-RSs (eg, the received signal RSRP/RSRQ/CQI/SNR/SINR is above a certain threshold or has the best performance) In performance, it is determined to select and receive some (one or more) CSI-RSs included in the relative threshold performance, and the terminal reception beam to be used for receiving the corresponding CSI-RS is also selected as a beam having optimal performance, and NR- It can be determined based on SS measurements. At this time, when selecting the CSI-RS, a specific terminal reception beam, for example, having the best performance or best beam pair for all NR-SS measurements, is selected so that the terminal maintains the same reception beam in consideration of the reception beam of the terminal. Of course, it is also possible to select only optimal CSI-RSs for the UE reception beam, .

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

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

Referring to FIG. 19 , a base station 1900 may include a transceiver 1910 for transmitting and receiving signals and a control unit 1930. Through the transceiver 1910, the base station 1900 may transmit and/or receive signals, information, messages, and the like. The controller 1930 may control overall operations of the base station 1900 . The controller 1930 may include at least one processor. The control unit 1930 may control the operation of the terminal described above with reference to FIGS. 1 to 17 .

In addition, the control unit 1930 transmits certain RS configuration information to the terminal and transmits the RS in the corresponding resource. In addition, when the terminal transmits any measurement report result or any RS configuration request information, it receives it, configures the RS if necessary, transmits the corresponding configuration information and the corresponding RS to the terminals, or configures the RS for the corresponding terminal to another neighboring base station. can request

If any RS configuration information for a specific terminal (or for an unspecified terminal) is received from a neighboring base station, this configuration information can be transmitted to terminals within the network, of course.

And the embodiments disclosed in this specification and drawings are only presented as specific examples to easily explain the content of the present invention and aid understanding, and are not intended to limit the scope of the present invention. Therefore, the scope of the present invention should be construed as including all changes or modifications derived based on the technical idea of the present invention in addition to the embodiments disclosed herein.

Claims (24)

In the method of a base station of a wireless communication system,
determining configuration information for at least one reference signal related to radio resource management (RRM);
Transmitting a configuration message including the determined configuration information to a terminal; and
Transmitting the at least one reference signal based on the determined setting information;
The configuration message includes first information about a cell through which the at least one reference signal is transmitted and second information about a resource through which the at least one reference signal is transmitted through the cell,
The first information includes information about an identifier (ID) of the cell and information about a measurement bandwidth of the at least one reference signal,
The second information includes information indicating a transmission period and time offset of the at least one reference signal,
When the second information includes information on a sync signal block related to the at least one reference signal, the timing of the at least one reference signal is based on the timing of the sync signal block, and the transmission period and time offset characterized in that it is confirmed according to. According to claim 1,
The method of claim 1 , wherein the information about the identifier of the cell includes a physical cell ID of the cell. According to claim 1,
The second information comprises information about an index of the at least one reference signal. According to claim 1,
Wherein the at least one reference signal is a channel state information-reference signal (CSI-RS). According to claim 1,
The information on the synchronization signal block related to the at least one reference signal includes an index of the synchronization signal block and information indicating that the synchronization signal block is correlated with the at least one reference signal. . In the method of the terminal of the wireless communication system,
Receiving, from a base station, a configuration message including configuration information for at least one reference signal related to radio resource management (RRM);
checking the setting information for the at least one reference signal related to the RRM;
receiving the at least one reference signal based on the setting message;
performing a measurement based on the setting message; and
Reporting a result of the measurement to the base station;
The configuration message includes first information about a cell through which the at least one reference signal is transmitted and second information about a resource through which the at least one reference signal is transmitted through the cell,
The first information includes information about an identifier (ID) of the cell and information about a measurement bandwidth of the at least one reference signal,
The second information includes information indicating a transmission period and time offset of the at least one reference signal,
When the second information includes information on a sync signal block related to the at least one reference signal, the timing of the at least one reference signal is based on the timing of the sync signal block, and the transmission period and time offset characterized in that it is confirmed according to. According to claim 6,
The method of claim 1 , wherein the information about the identifier of the cell includes a physical cell ID of the cell. According to claim 6,
The second information comprises information about an index of the at least one reference signal. According to claim 6,
Wherein the at least one reference signal is a channel state information-reference signal (CSI-RS). According to claim 6,
The information on the synchronization signal block related to the at least one reference signal includes an index of the synchronization signal block and information indicating that the synchronization signal block is correlated with the at least one reference signal. . In a base station of a wireless communication system,
transceiver; and
Controls to determine configuration information for at least one reference signal related to radio resource management (RRM), controls the transceiver to transmit a configuration message including the determined configuration information to a terminal, and controls the determined configuration A control unit controlling the transceiver to transmit the at least one reference signal based on information;
The configuration message includes first information about a cell through which the at least one reference signal is transmitted and second information about a resource through which the at least one reference signal is transmitted through the cell,
The first information includes information about an identifier (ID) of the cell and information about a measurement bandwidth of the at least one reference signal,
The second information includes information indicating a transmission period and time offset of the at least one reference signal,
When the second information includes information on a sync signal block related to the at least one reference signal, the timing of the at least one reference signal is based on the timing of the sync signal block, and the transmission period and time offset A base station, characterized in that identified according to. According to claim 11,
The base station characterized in that the information on the identifier of the cell includes a physical cell identifier (physical cell ID) of the cell. According to claim 11,
Wherein the second information includes information on an index of the at least one reference signal. According to claim 11,
The base station, characterized in that the at least one reference signal is a channel state information-reference signal (CSI-RS). According to claim 11,
The information on the synchronization signal block related to the at least one reference signal includes an index of the synchronization signal block and information indicating that the synchronization signal block is correlated with the at least one reference signal. . In the terminal of the wireless communication system,
transceiver; and
Controls the transceiver to receive, from a base station, a configuration message including configuration information on at least one reference signal related to radio resource management (RRM), and information about the at least one reference signal related to RRM Control to check the setting information, control the transceiver to receive the at least one reference signal based on the setting message, control to perform measurement based on the setting message, and send a result of the measurement to the Including a control unit for controlling to report to the base station,
The configuration message includes first information about a cell through which the at least one reference signal is transmitted and second information about a resource through which the at least one reference signal is transmitted through the cell,
The first information includes information about an identifier (ID) of the cell and information about a measurement bandwidth of the at least one reference signal,
The second information includes information indicating a transmission period and time offset of the at least one reference signal,
When the second information includes information on a sync signal block related to the at least one reference signal, the timing of the at least one reference signal is based on the timing of the sync signal block, and the transmission period and time offset A terminal, characterized in that confirmed according to. 17. The method of claim 16,
The terminal, characterized in that the information on the identifier of the cell includes a physical cell identifier (physical cell ID) of the cell. 17. The method of claim 16,
The second information includes information about an index of the at least one reference signal. 17. The method of claim 16,
The at least one reference signal is a channel state information-reference signal (CSI-RS), characterized in that the terminal. 17. The method of claim 16,
The information on the synchronization signal block related to the at least one reference signal includes an index of the synchronization signal block and information indicating that the synchronization signal block is correlated with the at least one reference signal. . delete delete delete delete

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