KR20220152108A - A user equipment performing communication based on a 5g mobile network with a base station and an operating method thereof - Google Patents

Abstract

According to an exemplary embodiment of the present disclosure, an operation method of a terminal performing communication based on a 5G mobile network with a first base station comprises the following steps of: setting a value of at least one time parameter based on an activated function in the 5G mobile network; generating a processing time for a physical downlink shared channel (PDSCH) from the first base station based on the value of the at least one time parameter; comparing the processing time with a reference time to determine a capability of the terminal; and transmitting information including the capability of the terminal to the first base station. The terminal improves communication performance by generating the processing time for PDSCH of the terminal.

Description

A terminal performing communication based on a base station and a 5G mobile network and a method of operating the same

The technical idea of the present disclosure relates to a terminal performing communication based on a base station and a 5G mobile network and an operation method thereof.

In ^3rd Generation Partnership Project (3GPP) release 17, standardization for advancement of 5G mobile network (or New Radio (NR) network) technology is in progress, and newly added functions are proposed in the standardization process. A newly added function may cause an increase in processing time required for a processing operation for a physical downlink shared channel (PDSCH) of the terminal. The processing time for the PDSCH of the UE is a factor that determines the performance of the UE, and the UE's performance can be used by the base station to configure a network with the UE. Therefore, a new generation method (or calculation method) of the processing time for the PDSCH of the terminal in consideration of newly added functions in 5G mobile network technology is required.

An object to be solved by the technical idea of the present disclosure is to provide a terminal and an operation method thereof for improving communication performance by generating a processing time for a PDSCH of the terminal in consideration of functions newly added to a 5G mobile network.

A method of operating a terminal performing 5G mobile network-based communication with a first base station according to an exemplary embodiment of the present disclosure includes setting a value of at least one time parameter based on an activated function in the 5G mobile network. Setting, generating a processing time for a physical downlink shared channel (PDSCH) from the first base station based on the value of the at least one time parameter, comparing the processing time with a reference time The method includes determining a capability of the terminal and transmitting information including the capability of the terminal to the first base station.

An operating method of a terminal performing communication based on a 5G mobile network with a base station according to an exemplary embodiment of the present disclosure, which corresponds to the time required for processing MBS (Multicast / Broadcast Services) related data in the 5G mobile network Setting at least one time parameter to have a value, generating a processing time for a Physical Downlink Shared Channel (PDSCH) by reflecting the value of the at least one time parameter, Determining the performance of the terminal and transmitting information including the performance of the terminal to the base station.

A method of operating a terminal performing communication based on a 5G mobile network with a first base station according to an exemplary embodiment of the present disclosure includes interference cancellation by a cell-specific reference signal (CRS) received from a second base station. Setting at least one time parameter to have a value corresponding to the time; generating a processing time for a Physical Downlink Shared Channel (PDSCH) by reflecting the value of the at least one time parameter; Determining the performance of the terminal based on time and transmitting information including the performance of the terminal to the base station.

In a terminal according to an exemplary embodiment of the present disclosure, performance determined according to a transceiver configured to receive a first physical downlink shared channel (PDSCH) based on a 5G mobile network with a first base station and a processing time for the first PDSCH And a controller configured to generate information indicating and transmit it to the first base station through the transceiver, wherein the controller sets a value of at least one time parameter based on an activated function in the 5G mobile network, and generating a processing time for the PDSCH based on a value of the at least one time parameter.

The terminal according to an exemplary embodiment of the present disclosure accurately generates the processing time for the PDSCH in consideration of the function of the 5G mobile network that affects the processing time for the PDSCH, so that the base station effectively configures the network for communication with the terminal. As a result, communication performance between the base station and the terminal can be improved.

Effects obtainable in the exemplary embodiments of the present disclosure are not limited to the effects mentioned above, and other effects not mentioned are common knowledge in the art to which exemplary embodiments of the present disclosure belong from the following description. can be clearly derived and understood by those who have That is, unintended effects according to the implementation of the exemplary embodiments of the present disclosure may also be derived by those skilled in the art from the exemplary embodiments of the present disclosure.

1 is a block diagram illustrating a wireless communication system according to an exemplary embodiment of the present disclosure.
2 is a block diagram illustrating one implementation of a base station according to an exemplary embodiment of the present disclosure.
3 is a block diagram illustrating an implementation example of a terminal according to an exemplary embodiment of the present disclosure.
4A is a diagram illustrating a basic structure of a time-frequency domain, which is a radio resource domain in a wireless system according to an exemplary embodiment of the present disclosure, and FIG. 4B is a diagram showing a slot in a wireless system according to an exemplary embodiment of the present disclosure. It is a drawing showing the structure.
5 illustrates examples of BandWidth Part (BWP) operation in a wireless system according to various embodiments of the present disclosure.
6A is a diagram illustrating a radio system in which MBS is activated according to an exemplary embodiment of the present disclosure, and FIG. 6B is a diagram illustrating a method of calculating a processing time for a PDSCH considering MBS according to an exemplary embodiment of the present disclosure. FIG. 6C is a table diagram for explaining the first and second time parameters of FIG. 6B.
7 is a flowchart illustrating a method of operating a terminal according to an exemplary embodiment of the present disclosure.
8A and 8B are diagrams for explaining an example of an overlapping pattern between a common frequency domain and a data frequency domain according to an exemplary embodiment of the present disclosure.
FIG. 9 is a flowchart illustrating a specific embodiment of step S100 of FIG. 7 .
10 is a diagram for explaining another example of an overlapping pattern between a common frequency domain and a data frequency domain according to an exemplary embodiment of the present disclosure.
FIG. 11A is a table diagram in which values of first and second time parameters according to frequency axis widths of overlapping regions are organized according to an exemplary embodiment of the present disclosure, and FIG. 11B is a common frequency chart according to an exemplary embodiment of the present disclosure. It is a diagram for explaining an example of an overlapping pattern between a domain and a data frequency domain.
12A is a diagram illustrating a wireless system in which interference cancellation by CRS is activated according to an exemplary embodiment of the present disclosure, and FIG. 12B is a diagram for a PDSCH in which interference cancellation by CRS is considered according to an exemplary embodiment of the present disclosure. It is a diagram for explaining a processing time calculation method, and FIG. 12c is a table diagram for explaining first and second time parameters of FIG. 12b.
13 is a flowchart illustrating a method of operating a terminal according to an exemplary embodiment of the present disclosure.
14A is a flowchart illustrating a specific embodiment of step S200 of FIG. 13, and FIG. 14B is a table in which values of first and second time parameters according to a slot configuration according to an exemplary embodiment of the present disclosure are organized. to be.
FIG. 15 is a flowchart for explaining a specific embodiment of step S200 of FIG. 13 .
16A is a flowchart for explaining a method of operating a terminal according to an exemplary embodiment of the present disclosure, and FIG. 16B is a diagram for explaining the number of overlapped CRSs according to the number of antenna ports.
17A is a flowchart for explaining another example of the operation method of the terminal of FIG. 15, and FIGS. 17B and 17C are diagrams for explaining the number of overlapped CRSs according to frame types.
18 is a block diagram illustrating an electronic device according to an exemplary embodiment of the present disclosure.
19 is a diagram illustrating communication devices generating a processing time for a PDSCH according to an exemplary embodiment of the present disclosure.

Hereinafter, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.

1 is a block diagram illustrating a wireless communication system (WCS) according to an exemplary embodiment of the present disclosure.

Referring to FIG. 1 , a wireless communication system (WCS) may include first to third base stations (BS1, BS2, and BS3). The third base station BS3 may communicate with the first and second base stations BS1 and BS2. Additionally, the third base station BS3 may communicate with at least one network 40, such as the Internet or a proprietary Internet Protocol network or other data network.

The first base station BS1 may provide wireless broadband access to a plurality of terminals 21 to 26 within the coverage area 20 of the first base station BS1. A plurality of terminals include a terminal 21 that can be located in SB (Small Business; SB), a terminal 22 that can be located in E (Enterprise), and a terminal 23 that can be located in HS (Wifi Hot Spot) , R (Residence) may include a terminal 24 and terminals 25 and 26 that may be M (mobile devices) such as a cellular phone, a wireless laptop, and a wireless PDA. The second base station BS2 may provide wireless broadband access to a plurality of terminals 25 and 26 within the coverage area 30 of the second base station BS2. As an exemplary embodiment, the first to third base stations 10, 11, and 12 are 5G (or, NR (New Radio)), LTE (Long Term Evolution), LTE-A (Long Term Evolution-Advanced), WiMAX , WiFi, CDMA (Code Division Multiple Access), GSM (Global System for Mobile Communications), WLAN (Wireless Local Area Network) or other arbitrary wireless communication technologies are used to communicate with each other or with a plurality of terminals 21 to 26 can do.

Hereinafter, it is assumed that the first base station BS1 supports 5G mobile network-based communication and the second base station BS2 supports LTE mobile network-based communication. In addition, the first and second terminals 25 and 26 are located in an area where the coverage area 20 of the first base station BS1 and the coverage area 30 of the second base station BS2 overlap. It is assumed that the second terminals 25 and 26 support 5G mobile network-based communication. The above premise is intended to aid understanding of the technical idea of the present disclosure, and the present disclosure is not limited thereto. Hereinafter, the operation of the first terminal 25 will be mainly described, and it is clear that embodiments of the operation of the first terminal 25 can be applied to other terminals 21 to 24 and 26 as well. In addition, it will be fully understood that the technical ideas of the present disclosure can be applied to next-generation mobile network communication other than 5G mobile network communication.

The first base station BS1 may transmit a control channel including downlink or uplink scheduling information to the first terminal 25 . The first terminal 25 may perform 5G mobile network-based communication with the first base station BS1 based on a control channel. For example, the first terminal 25 may obtain data included in the PDSCH by identifying and decoding the PDSCH received from the first base station BS1 based on the information included in the control channel. In this specification, the terminal receiving the PDSCH from the base station may be interpreted as the terminal receiving data from the base station through the PDSCH.

As an exemplary embodiment, a wireless system including the first base station BS1 and the first terminal 25 may support various functions of a 5G mobile network defined in 3GPP Release 17 or the like. Some of the various functions of the 5G mobile network may affect the processing time for the PDSCH of the first terminal 25 . As an exemplary embodiment, the part may include at least one of interference cancellation by Multicast/Broadcast Services (MBS) and Cell-specific Reference Signal (CRS).

MBS may also be referred to as Multimedia Broadcast Multicast Services (MBMS). In the MBS, the same content may be transmitted to a plurality of terminals located within an MBS service area. Base stations participating in transmission are allocated point-to-multipoint radio resources so that the same signal can be transmitted to terminals of all users subscribing to the MBS service.

Interference cancellation by CRS may refer to an operation in which the first terminal 25 cancels interference by the CRS received from the second base station BS2.

In addition to this, 5G mobile network functions that can affect the processing time of the PDSCH of the first terminal 25 may vary, and when these functions are activated, the first terminal 25 considers the activated functions and performs the PDSCH You can create a processing time for . Hereinafter, the operation of the first terminal 25 when at least one function of MBS and interference cancellation by CRS is activated will be mainly described.

As an exemplary embodiment, the first terminal 25 may set a value of at least one time parameter based on an activated function in the 5G mobile network. The time parameter may be referred to as a time relaxation parameter. In this specification, an activated function may mean a function selected from the first base station BS1 or a function that both the first base station BS1 and the first terminal 25 can support. For example, a function not selected by the first base station BS1 or not supported by at least one of the first base station BS1 and the first terminal 25 may be referred to as a disabled function. At least one time parameter corresponds to an activated function, and the first terminal 25 sets the at least one time parameter to have a pre-agreed value according to the activated function or to have a variable value according to network conditions. At least one time parameter can be set. In this specification, the network state may be interpreted as a state of heterogeneous signals overlapping with the data frequency region to which the PDSCH of the terminal is allocated. Specific details about this will be described later.

As an exemplary embodiment, the first terminal 25 may generate a processing time for the PDSCH from the first base station BS1 based on the value of at least one time parameter. A formula related to the processing time may be defined in 3GPP TS 38.214 or the like, and details thereof will be described later.

As an exemplary embodiment, the first terminal 25 may determine its own performance by comparing the processing time for the PDSCH with the reference time. For example, the reference time may be variable according to activated functions. Specifically, when the activated function is expected to increase the processing time for the PDSCH, the reference time may be increased than before. That is, since it is difficult to accurately determine the performance of the terminal when comparing the processing time for the PDSCH, which is increased according to the activated function, with the previous reference time, the reference time may also vary according to the activated function.

As an exemplary embodiment, the first terminal 25 may transmit information including its own capability to the first base station BS1. The first base station BS1 may recognize the performance of the first terminal 25 by referring to the received information, and determine Ack/Nack timing of hybrid automatic repeat and request (HARQ) from the first terminal 25. . Specific details about this will be described later.

The terminal according to an exemplary embodiment of the present disclosure accurately generates the processing time for the PDSCH in consideration of the function of the 5G mobile network that affects the processing time for the PDSCH, so that the base station effectively configures the network for communication with the terminal. As a result, communication performance between the base station and the terminal can be improved.

2 is a block diagram illustrating one implementation of a base station 100 according to an exemplary embodiment of the present disclosure. The implementation of the base station 100 is merely an exemplary embodiment, and is not limited thereto. An implementation example of the base station 100 may be applied to the first base station BS1 of FIG. 1 .

Referring to FIG. 2, the base station 100 may include a controller 110, a memory 120, a processing circuit 130, a plurality of RF transceivers 142_1 to 142_n, and a plurality of antennas 144_1 to 144_n. can The RF transceivers 142_1 to 142_n may receive RF signals transmitted by terminals within the network from the antennas 144_1 to 144_n. The RF transceivers 142_1 to 142_n may frequency down-convert the received RF signals to generate intermediate frequency (IF) or baseband signals. Processing circuitry 130 may generate data signals by filtering, decoding and/or digitizing the intermediate frequency or baseband signals. The controller 110 may additionally process the data signals.

Also, the processing circuit 130 may receive data signals from the controller 110 . Processing circuitry 130 may encode, multiplex, and/or analogize the received data signals. The RF transceivers 142_1 to 142_n may frequency up-convert the intermediate frequency or baseband signals output from the processing circuit 130 and transmit the RF signals through the antennas 144_1 to 144_n. In some embodiments, processing circuit 130 may be referred to as an RF integrated circuit.

The controller 110 according to an exemplary embodiment may perform overall communication control operations of the base station 100 for 5G mobile network-based communication, and includes a scheduler 112 that schedules uplink and downlink with the terminal. can do. As an exemplary embodiment, the scheduler 112 may perform scheduling considering at least one of MBS and CRS based interference cancellation (CSR-IC) based on the performance received from the UE. In some embodiments, controller 110 may be referred to as a baseband processor.

The controller 110 may execute programs and/or processes stored in the memory 120 to perform overall communication control operations of the base station 100 . In some embodiments, the scheduler 112 may be stored in the memory 120 in the form of program code, and the controller 110 accesses the memory 120 and executes the stored program code, thereby performing the operation of the scheduler 112. It can be.

3 is a block diagram illustrating an implementation of a terminal 150 according to an exemplary embodiment of the present disclosure. The implementation of the terminal 150 is merely an exemplary embodiment, and is not limited thereto. An implementation example of the terminal 150 may be applied to the first terminal 25 of FIG. 1 .

Referring to FIG. 3 , a terminal 150 may include a controller 160, a memory 170, a processing circuit 180, an RF transceiver 192, and a plurality of antennas 194_1 to 194_m. Although not shown, the terminal 150 may further include components such as a speaker, an input/output interface, a touch screen, and a display.

The RF transceiver 192 may receive RF signals transmitted by the base station through the antennas 194_1 to 194_m. The RF transceiver 192 may down-convert the received RF signals to generate intermediate frequency or baseband signals. Processing circuitry 180 may generate data signals by filtering, decoding, and/or digitizing the intermediate frequency or baseband signals. The controller 160 may additionally process the data signals. In some embodiments, processing circuit 180 may be referred to as an RF integrated circuit.

Also, processing circuit 180 may receive data signals from controller 160 . Processing circuitry 180 may encode, multiplex, and/or analogize the received data signals. The RF transceiver 192 may frequency up-convert the intermediate frequency or baseband signals output from the processing circuit 180 and transmit the RF signals through the antennas 194_1 to 194_n.

The controller 160 according to an exemplary embodiment may perform overall communication control operations for 5G mobile network-based communication and may include an information circuit 162 . In some embodiments, controller 160 may be referred to as a baseband processor.

As an exemplary embodiment, the information circuit 162 may generate a processing time for the received PDSCH taking into account when at least one of MBS and CRS-based interference cancellation (CSR-IC) is activated. Specifically, when the MBS is activated, the information circuit 162 configures, at least based on an overlapping pattern between a common frequency domain to which the PDSCH of the MBS is allocated and a data frequency domain to which the PDSCH based on unicast (or group cast) is allocated. The value of one time parameter can be determined. In addition, the information circuit 162 is based on at least one of the number of CRSs based on the LTE mobile network and the slot configuration of the PDSCH received from another base station overlapping the data frequency region to which the PDSCH is allocated when interference cancellation by CRS is activated. It is possible to determine the value of at least one time parameter. In this specification, the number of CRSs overlapping the data frequency domain may be interpreted as the number of symbols to which CRSs are allocated among symbols included in the data frequency domain.

As an exemplary embodiment, the information circuit 162 may generate a processing time for the PDSCH by applying at least one time parameter determined in consideration of interference cancellation by MBS or CRS, and may determine its own performance. The information circuit 162 may generate information including its performance and transmit it to the base station through the processing circuit 180, the RF transceiver 192, and the antennas 194_1 to 194_m.

The controller 160 may execute programs and/or processes stored in the memory 170 to perform overall communication control operations of the terminal 150 . In some embodiments, information circuit 162 may be stored in memory 170 in the form of program code, and controller 160 may access memory 170 and execute the stored program code to operate information circuit 162. this can be done In addition, the memory 170 may store a table required to generate a processing time for the PDSCH, and the table may correspond to a standard for values of time parameters to be described later.

4A is a diagram illustrating a basic structure of a time-frequency domain, which is a radio resource domain in a wireless system according to an exemplary embodiment of the present disclosure, and FIG. 4B is a diagram showing a slot in a wireless system according to an exemplary embodiment of the present disclosure. It is a drawing showing the structure.

Referring to FIG. 4A , a horizontal axis may represent a time domain and a vertical axis may represent a frequency domain. The minimum transmission unit in the time domain is an Orthogonal Frequency Division Multiplexing (OFDM) symbol, and N _symb (202) OFDM symbols may be gathered to form one slot (206). Two slots may be gathered to form one subframe 205 . For example, the length of the slot 206 may be 0.5 ms, and the length of the subframe may be 1.0 ms. However, this is an exemplary embodiment, and the length of the slot 206 may be variable according to the configuration of the slot 206 . Meanwhile, the subframe 205 is based on the LTE mobile network, and in the 5G mobile network, a time-frequency domain may be defined around the slot 206. Also, the radio frame 214 may be a time domain unit consisting of 10 subframes 205 .

The minimum transmission unit in the frequency domain is a subcarrier, and the bandwidth of the entire system transmission bandwidth may consist of a total of N _BW (204) subcarriers. A basic unit of resources in the time-frequency domain is a resource element (212, Resource Element, RE), which can be represented by an OFDM symbol index and a subcarrier index. A resource block (RB) 208 may be defined by N _symb (202) consecutive OFDM symbols in the time domain and N _RB (210) consecutive subcarriers in the frequency domain. Accordingly, one RB 208 may be composed of (N _symb * N _RB ) REs 212 . An RB pair is a unit in which two RBs are concatenated on the time axis, and may be composed of (N _symb * 2N _RB ) REs 212 .

Meanwhile, a PDSCH allocated to a time-frequency domain resource as shown in FIG. 4a may be transmitted from a base station to a terminal in a wireless communication system. As an exemplary embodiment, when the MBS is activated, the PDSCH may include a first PDSCH of the MBS and a second PDSCH based on unicast (or groupcast). An overlapping pattern between a common frequency region to which the first PDSCH is allocated and a data frequency region to which the second PDSCH is allocated may vary, and details thereof will be described later. As an exemplary embodiment, when interference cancellation by CRS is activated, a data frequency region to which a PDSCH is allocated may overlap a CRS based on an LTE mobile network. Specific details about this will be described later.

When generating a processing time for a PDSCH, a UE according to an exemplary embodiment of the present disclosure may consider signals overlapped with the PDSCH according to an activated function, and the processing time for the PDSCH may be variable according to the overlapping state. .

)=14). 하나의 서브프레임(301)은 하나 또는 복수의 슬롯(302, 303)들로 구성될 수 있으며, 하나의 서브프레임(301) 당 슬롯(302, 303)의 개수는 부반송파 간격에 대한 설정 값

(304, 305), 슬롯(302, 303)에 포함된 심볼의 개수에 따라 다를 수 있다. 도 4b에서는 부반송파 간격 설정 값으로

(304)인 경우와

(305)인 경우가 도시되어 있다. 부반송파 간격 설정 값으로

(304)인 경우에 하나의 서브프레임(301)은 1개의 슬롯(302)을 포함하고, 부반송파 간격 설정 값으로

(305)인 경우에 하나의 서브프레임(301)은 2개의 슬롯(303)을 포함할 수 있다.Referring further to FIG. 4B, one frame 300 (or radio frame) may be defined as 10 ms, and a subframe 301 may be defined as 1 ms. ) may be included. One slot (302, 303) may be defined as 14 OFDM symbols (ie, the number of symbols per slot (

)=14). One subframe 301 may consist of one or a plurality of slots 302 and 303, and the number of slots 302 and 303 per one subframe 301 is a set value for the subcarrier interval.

(304, 305), it may vary according to the number of symbols included in the slots (302, 303). In FIG. 4B, as the subcarrier spacing setting value,

(304) and

The case of (305) is shown. As the subcarrier spacing setting value

In the case of (304), one subframe 301 includes one slot 302, and the subcarrier interval setting value

In the case of (305), one subframe 301 may include two slots 303.

에 따라 하나의 서브프레임 당 슬롯 수가 달라질 수 있고, 이에 따라 하나의 프레임 당 슬롯 수가 달라질 수 있다. 각 부반송파 간격에 대한 설정 값

에 따른 하나의 서브프레임 당 슬롯수(

) 및 하나의 프레임 당 슬롯 수(

)는 [표 1]로 정의될 수 있다.As above, setting value for subcarrier spacing

Depending on the number of slots per subframe, the number of slots per frame may vary accordingly. Setting value for each subcarrier interval

The number of slots per one subframe according to (

) and the number of slots per frame (

) can be defined as [Table 1].

[Table 1]

Also, in some embodiments, the number of slots per subframe may vary according to the number of symbols included in one slot.

As an exemplary embodiment, when interference cancellation by CRS is activated, the terminal may generate a processing time for the PDSCH based on a slot configuration. That is, while the CRS is transmitted in a subframe having a fixed format (for example, a subcarrier interval of 15 kHz) according to the LTE mobile network, since the configuration of the slot of the PDSCH based on the 5G mobile network is variable, Interference cancellation by CRS may be required in different ways. In each scheme, the time required for interference cancellation by CRS may be different. Therefore, as an exemplary embodiment, the terminal may select a scheme conforming to the configuration of the slot, perform interference cancellation by CRS based on the selected scheme, and consider the time required for the selected scheme to reduce the processing time for the PDSCH. can create

5 illustrates examples of BandWidth Part (BWP) operation in a wireless system according to various embodiments of the present disclosure. In order for one terminal to perform communication using only a part of the system frequency bandwidth used by one base station, BWP may be used in a wireless system. BWP may be used for the purpose of reducing manufacturing cost of a terminal or power saving of a terminal. BWP can be set by the base station only for terminals that support it.

Referring to FIG. 5 , three BWP operation scenarios may exist. In a first scenario, BWP is applied to a terminal supporting only a narrower frequency bandwidth 410 than the system frequency bandwidth 405 used by one cell. In order to reduce manufacturing cost, a specific terminal may be developed to support a limited frequency bandwidth. The terminal must report to the base station that it supports only the limited frequency bandwidth, and the base station can set a BWP of the maximum bandwidth supported by the terminal or less.

The second scenario is that BWP is applied for the purpose of power saving of the terminal. For example, while a terminal was performing communication using the entire system bandwidth 415 used by a base station or a part of the system bandwidth 415 (eg, BWP 2 420), the communication base station for the purpose of power saving A narrower frequency bandwidth (eg, BWP 1 (425)) may be set.

The third scenario is to apply individual BWPs corresponding to different numerologies. The numerology means diversification of physical layer settings in order to implement optimal data transmission according to various service requirements. For example, in an OFDMA structure composed of a plurality of subcarriers, the distance between the subcarriers may be variably adjusted according to predetermined requirements. One terminal can perform communication based on a plurality of numerologies at the same time. At this time, since the physical layer settings corresponding to each numerology are different, each numerology can be separated and operated as individual BWP 1 (430) and BWP 2 (435).

Meanwhile, when the terminal transitions from the RRC_IDLE state or from the RRC_INACTIVE state to the RRC_CONNECTED state, the BWP used by the terminal to attempt access to the network is referred to as an initial BWP. When the terminal succeeds in accessing the base station and enters the RRC_CONNECTED state, the terminal may receive an additional BWP from the base station.

In addition, in the above scenarios, a terminal may be configured with a plurality of BWPs, and then a specific BWP among the BWPs configured by the base station may be activated. For example, in the third scenario, a scenario in which the terminal is configured with BWP 1 (430) and BWP2 (435) and the base station activates one of the two BWPs is possible. Accordingly, the terminal can transmit and receive data through an active BWP for each downlink and uplink in each of the above scenarios.

When a plurality of BWPs are set, the terminal can change the activated BWP, and this change is referred to as BWP switching. This can be performed by allocating resources to the BWP to be switched in the PDCCH transmitted by the base station.

In an unlicensed band, a scenario using the same numerologies in the third scenario can be operated. For example, in the unlicensed band, since devices such as wireless LANs operate with a bandwidth of 20 MHz, the base station uses a plurality of BWPs corresponding to 20 MHz, such as BWP 1 (430) and BWP 2 (435) in this figure. It can be set, and each BWP for the terminal (s) can be moved according to the congestion of the unlicensed band.

In this specification, the BWP in FIG. 5 may be applied to a data frequency domain to which a PDSCH based on unicast (or groupcast) is allocated. As an exemplary embodiment, the activated BWP may be changed, and accordingly, the overlap pattern of the common frequency domain to which the PDSCH of the MBS is allocated and the data frequency domain to which the PDSCH based on unicast (or groupcast) is allocated is can vary. The UE may consider the overlapping pattern when generating the processing time for the PDSCH. However, in some embodiments, the BWP in FIG. 5 may also be applied to a common frequency domain to which the PDSCH of the MBS is allocated.

)의 연산 방법을 설명하기 위한 도면이며, 도 6c는 도 6b의 제1 및 제2 시간 파라미터를 설명하기 위한 테이블도이다.6A is a diagram illustrating a radio system in which MBS is activated according to an exemplary embodiment of the present disclosure, and FIG. 6B is a processing time for a PDSCH considering MBS according to an exemplary embodiment of the present disclosure (

), and FIG. 6C is a table diagram for explaining the first and second time parameters of FIG. 6B.

Referring to FIG. 6A , a wireless system may include a base station (BS) and first and second terminals UE1 and UE2. MBS can be activated in the wireless system, and the base station (BS) can transmit the first PDSCH of the MBS including the same data (or content) to the first and second terminals UE1 and UE2. Meanwhile, the base station (BS) may transmit the second PDSCH based on unicast (or group cast) to the first terminal (UE1) separately from the MBS.

As an exemplary embodiment, UE1 may receive a PDSCH including a first PDSCH and a second PDSCH, and UE1 may decode the first PDSCH and decode the second PDSCH. can be performed. That is, the processing time for the PDSCH of the UE1 may include the processing time for the first PDSCH and the processing time for the second PDSCH. In this specification, the processing time for the first PDSCH may be interpreted as a time required to process MBS-related data. Hereinafter, a method of calculating the processing time for the PDSCH will be described with reference to FIG. 6B.

)을 기반으로 Ack/Nack 타이밍(K1) 및 심볼 기준 시간 갭(Tgap_symb)을 결정할 수 있다. PDSCH에 대한 처리 시간(

)은 PDSCH의 송신이 완료되는 제2 시간(t21)과 PDSCH에 대한 처리가 완료되고, Ack/Nack 신호의 송신 준비가 된 제4 시간(t41) 간의 차이로 설정될 수 있다. Ack/Nack 타이밍(K1)은 기지국(BS) 측에서의 PDSCH 송신과 Ack/Nack 신호가 포함된 PUCCH(Physical Uplink Contol Channel)의 수신 사이의 시간 차이(time gap)로서 정의될 수 있다. Ack/Nack 타이밍(K1)은 PDSCH의 슬롯과 Ack/Nack 신호가 포함된 UCI(Uplink Control Information) 슬롯 사이의 시간 딜레이를 가르킬 수 있다. 일 예로, Ack/Nack 타이밍(K1)은 제1 시간(t11)과 제5 시간(t51) 간의 차이로 설정될 수 있다. 심볼 기준 시간 갭(Tgap_symb)은 PDSCH의 송신이 완료되는 제2 시간(t21)과 PUCCH의 수신이 시작되는 제6 시간(t61) 간의 차이로 설정될 수 있다.Referring further to FIG. 6B, the base station (BS) processes the PDSCH of the first terminal (UE1) (

), the Ack/Nack timing (K1) and the symbol reference time gap (Tgap_symb) may be determined. Processing time for PDSCH (

) may be set as a difference between the second time t21 when the transmission of the PDSCH is completed and the fourth time t41 when the processing of the PDSCH is completed and the Ack/Nack signal is ready for transmission. The Ack/Nack timing (K1) may be defined as a time gap between PDSCH transmission at the base station (BS) and reception of a Physical Uplink Control Channel (PUCCH) including the Ack/Nack signal. The Ack/Nack timing K1 may indicate a time delay between a slot of the PDSCH and an Uplink Control Information (UCI) slot including the Ack/Nack signal. For example, the Ack/Nack timing K1 may be set as a difference between the first time t11 and the fifth time t51. The symbol-based time gap Tgap_symb may be set as a difference between the second time t21 when PDSCH transmission is completed and the sixth time t61 when PUCCH reception starts.

)은 다음의 [수학식 1]과 같이 연산될 수 있다.As an exemplary embodiment, the processing time for the PDSCH of the first terminal UE1 (

) can be calculated as in [Equation 1] below.

[Equation 1]

는 3GPP TS 38.214에서의 5.3 절에 구체적으로 명시되어 있으며, 이하에서는, 본 개시의 예시적 실시예들에 따른 제1 및 제2 시간 파라미터를 중심으로 서술된다.

is specifically specified in section 5.3 of 3GPP TS 38.214, and hereinafter, the first and second time parameters according to exemplary embodiments of the present disclosure are mainly described.

이고, 제2 시간 파라미터는

에 합산되는

일 수 있다. 일부 실시예에서 시간 파라미터는 제1 및 제2 시간 파라미터(

,

) 중 어느 하나만을 포함할 수 있으며, 이 때,

는 [수학식 2] 또는 [수학식 3]와 같이 연산될 수 있다.As an exemplary embodiment, the time parameter set to have a value corresponding to the time required to process MBS-related data may include first and second time parameters. The first time parameter is

, and the second time parameter is

added to

can be In some embodiments, the time parameters include first and second time parameters (

,

) may include only one of them, in which case,

Can be calculated as in [Equation 2] or [Equation 3].

[Equation 2]

[Equation 3]

)만을 고려하여 처리 시간을 연산하는 실시예이고, [수학식 3]은 제2 시간 파라미터(

)만을 고려하여 처리 시간을 연산하는 실시예이다. 이하에서는, 제1 및 제2 시간 파라미터(

,

)를 고려하여 처리 시간을 연산하는 실시예를 중심으로 서술되나, 본 개시는 이에 국한되지 않으며, 제1 및 제2 시간 파라미터(

,

) 중 어느 하나만을 고려하여 처리 시간을 연산할 수 있다.[Equation 2] is the first time parameter (

), and [Equation 3] is the second time parameter (

) This is an embodiment in which the processing time is calculated in consideration of only. Hereinafter, the first and second time parameters (

,

), but the present disclosure is not limited thereto, and the first and second time parameters (

,

), the processing time can be calculated by considering only one of them.

)는 X1 값으로 설정될 수 있으며, 제2 시간 파라미터(

)는 Y1 값으로 설정될 수 있다. 예시적 실시예로, X1 및 Y1은 미리 약속되어 고정된 값일 수 있다. 즉, 제1 단말(UE1)은 MBS가 활성화된 때에, 이에 응답하여 제1 시간 파라미터(

)를 X1으로 설정하고, 제2 시간 파라미터를 Y1으로 설정한 후, [수학식 1]에 따라 처리 시간(

)을 연산할 수 있다.Further referring to FIG. 6C , the first time parameter (

) may be set to the value of X1, and the second time parameter (

) may be set as the Y1 value. As an exemplary embodiment, X1 and Y1 may be predetermined and fixed values. That is, when the MBS is activated, the first UE1 responds to the first time parameter (

) is set to X1, and the second time parameter is set to Y1, and then the processing time (Equation 1) according to

) can be computed.

In an exemplary embodiment, X1 and Y1 may be variable. Specifically, the UE may adjust X1 and Y1 based on an overlapping pattern between a common frequency domain to which the first PDSCH of the MBS is allocated and a data frequency domain to which a second PDSCH based on unicast (or groupcast) is allocated. . The overlapping pattern is an element that determines the processing time for the PDSCH of the UE. As the complexity of the overlapping pattern increases, the processing time for the PDSCH of the UE may increase. For example, the complexity of the overlapping pattern may be determined by the width of the frequency axis of the overlapping region, the number of overlapping regions, and the like. A specific embodiment for this will be described later.

In an exemplary embodiment, a plurality of terminals may have different processing methods for overlapping regions, and X1 and Y1 may be different for each terminal according to each processing method. For example, an arbitrary UE may first process the second PDSCH and then process the first PDSCH. Any other terminal may preferentially process the first PDSCH in the overlapping region while processing the second PDSCH, and resume processing the second PDSCH when the processing of the first PDSCH is completed.

In the above various embodiments, values corresponding to X1 and Y1 for generating the processing time for the PDSCH may vary, and the contents thereof may be defined as standard in 3GPP TS 38.214 or the like.

7 is a flowchart illustrating a method of operating a terminal according to an exemplary embodiment of the present disclosure.

Referring to FIG. 7 , in step S100, the UE may generate a processing time for a PDSCH in consideration of a time required for processing MBS-related data. The UE may generate the processing time for the PDSCH by considering the processing time for the first PDSCH of the MBS and the processing time for the second PDSCH based on unicast (or groupcast). In step S110, the terminal may compare the processing time with the first reference time. The first reference time may have a prearranged value when the MBS is activated, and may be different from the first reference time when the MBS is deactivated. For example, the first reference time when MBS is activated may be longer than the first reference time when MBS is deactivated. In step S120, the UE may determine UE performance based on the comparison result. For example, when the processing time for the PDSCH is shorter than the first reference time, the terminal may determine that the terminal performance is good and set the terminal performance to a first value indicating this. When the processing time for the PDSCH is equal to or longer than the first reference time, the terminal may determine that the terminal performance is bad and set the terminal performance to a second value indicating this. In step S130, the terminal may transmit information including terminal performance to the base station. The base station may perform downlink and uplink scheduling with the terminal by referring to the terminal performance in the received information.

8A and 8B are diagrams for explaining an example of an overlapping pattern between a common frequency domain and a data frequency domain according to an exemplary embodiment of the present disclosure.

Referring to FIG. 8A , the first PDSCH of the MBS transmitted to the first and second terminals UE1 and UE2 may be allocated to a common frequency domain CFR11. The second PDSCH based on unicast (or groupcast) transmitted to the first UE1 is allocated to the first data frequency region DFR11 and unicast (or groupcast) transmitted to the second UE2. The second PDSCH based on groupcast) may be allocated to the second data frequency region DFR21.

For example, the first and second data frequency domains DFR11 and DFR21 may not overlap with the common frequency domain CFR11. The first and second terminals UE1 and UE2 may generate a processing time for the PDSCH by considering that the data frequency domains DFR11 and DFR21 and the common frequency domain CFR11 do not overlap each other.

Referring to FIG. 8B , unlike FIG. 9A , the first and second data frequency domains DFR11 and DFR21 may overlap the common frequency domain CFR21 , respectively. The first and second terminals UE1 and UE2 may generate a processing time for the PDSCH in consideration of overlapping of the data frequency domains DFR11 and DFR21 and the common frequency domain CFR21.

As an exemplary embodiment, a processing time for a PDSCH in an overlapping pattern (eg, a non-overlapping pattern) as shown in FIG. 8A may be shorter than a processing time for a PDSCH in an overlapping pattern as shown in FIG. 8B .

FIG. 9 is a flowchart illustrating a specific embodiment of step S100 of FIG. 7 .

Referring to FIG. 9 , in step S101, the terminal may check an overlapping pattern between a common frequency domain and a data frequency domain. In step S102, the UE may determine the value of at least one MBS-related time parameter based on the overlapping pattern. For example, according to the complexity of the overlapping pattern, the value of at least one time parameter may be prearranged or may be determined through a predetermined equation. Contents referred to for determining the value of at least one MBS-related time parameter may be standardly defined in 3GPP TS 38.214 or the like. In step S103, the terminal may calculate the processing time for the PDSCH to which the value of at least one MBS-related time parameter is applied. As a result, the processing time calculated from the terminal may have different values depending on the overlap pattern.

10 is a diagram for explaining another example of an overlapping pattern between a common frequency domain and a data frequency domain according to an exemplary embodiment of the present disclosure.

Referring to FIG. 10, the first PDSCH of the MBS transmitted to the first and second terminals UE1 and UE2 is allocated to the first common frequency region CFR12 and transmitted to the second and third terminals UE2 and UE3. The first PDSCH of the MBS to be transmitted may be allocated to the second common frequency region (CFR22). The second PDSCH based on unicast (or groupcast) transmitted to the first to third terminals UE1, UE2, and UE3 is allocated to the first to third data frequency regions DFR12, DFR22, and DFR32, respectively. can Meanwhile, the first data frequency region DFR12 may correspond to the first BWP, the second data frequency region DFR22 may correspond to the second BWP, and the third data frequency region DFR32 may correspond to the third BWP. .

For example, the first data frequency region DFR12 overlaps one first common frequency region CFR12, and the frequency axis width of the overlapping region may be the first width W11. The second data frequency region DFR22 overlaps the two first and second common frequency regions CFR12 and CFR22, and the width of the frequency axis of the overlapping region may be the first and second widths W11 and W21, respectively. . For example, the first and second widths W11 and W21 may be different or the same.

As described above, the overlapping pattern may be defined by the number of overlapping regions, the frequency axis width of the overlapping region, and the like. For example, since the second terminal UE2 has an overlapping pattern including two overlapping regions, it may generate a longer PDSCH processing time than the first and third terminals UE1 and UE3. Meanwhile, when the first and second widths W11 and W21 are different, the first and third terminals UE1 and UE3 may generate processing times for different PDSCHs, and a specific embodiment thereof will be described later. do.

However, the embodiment of the overlapping pattern shown in FIG. 10 is only an exemplary embodiment, and is not limited thereto, and various overlapping patterns may further exist. Accordingly, the values of the time parameter related to the complexity of the overlapping pattern are It may be defined by standards such as 3GPP TS 38.214.

FIG. 11A is a table diagram in which values of first and second time parameters according to frequency axis widths of overlapping regions are organized according to an exemplary embodiment of the present disclosure, and FIG. 11B is a common frequency chart according to an exemplary embodiment of the present disclosure. It is a diagram for explaining an example of an overlapping pattern between a domain and a data frequency domain.

Referring to FIG. 11A , values of the first and second time parameters may be set differently according to the width of the frequency axis of the overlapping region between the common frequency domain and the data frequency domain. The table of FIG. 11A may be defined in advance as a standard. As an exemplary embodiment, when the width of the frequency axis is within the first range RG1, the first and second time parameters may be set to X11 and Y11, respectively. When the width of the frequency axis is within the second range RG2, the first and second time parameters may be set to X21 and Y21, respectively. When the width of the frequency axis is within the third range RG3, the first and second time parameters may be set to X31 and Y31, respectively. In this way, values of the first and second time parameters corresponding to each of the plurality of ranges may be promised in advance.

Referring further to FIG. 11B , the first PDSCH of the MBS transmitted to the UE1 may be allocated to first to third common frequency domains CFR13 , CFR23 , and CFR33 . The second PDSCH based on unicast (or groupcast) transmitted to the UE1 may be allocated to the data frequency domain DFR13. The data frequency domain DFR13 may correspond to a predetermined BWP.

As an exemplary embodiment, the UE1 may generate a processing time for the PDSCH based on an overlapping pattern between the first to third common frequency regions CFR13, CFR23, and CFR33 and the data frequency region DFR13. have. The UE1 may generate a processing time for the PDSCH based on the number of overlapping regions being three and the first to third frequency axis widths W13, W23, and W33 of each overlapping region. For example, the UE1 may check the range corresponding to the widest first width W13 from the table of FIG. 12A and set values of the first and second time parameters. Thereafter, the UE1 may set final values of the first and second time parameters by multiplying the values of the first and second time parameters by 3 corresponding to the number of overlapping regions. For example, when the values of the first and second time parameters corresponding to the first width W13 are X31 and Y31 in the third range RG3, the first terminal UE1 is three times X31, Y31 The first and second time parameters may be set to have a final value three times greater than . However, this is only an exemplary embodiment, and is not limited thereto, and the first terminal UE1 sets the values of the first and second time parameters corresponding to the first to third widths W13, W23, and W33, respectively. After summing, the first and second time parameters may be set to have the summed value as a final value.

)의 연산 방법을 설명하기 위한 도면이며, 도 12c는 도 12b의 제1 및 제2 시간 파라미터를 설명하기 위한 테이블도이다.12A is a diagram illustrating a wireless system in which interference cancellation by CRS is activated according to an exemplary embodiment of the present disclosure, and FIG. 12B is a diagram for a PDSCH in which interference cancellation by CRS is considered according to an exemplary embodiment of the present disclosure. processing time (

), and FIG. 12c is a table diagram for explaining the first and second time parameters of FIG. 12b.

Referring to FIG. 12A, a radio system may include a terminal (UE) and first and second base stations (BS1 and BS2). In a wireless system, interference cancellation by CRS can be activated, the first base station (BS1) transmits a PDSCH based on the 5G mobile network to the terminal (UE), and the second base station (BS2) transmits a PDSCH based on the LTE mobile network. The CRS may be transmitted to the terminal (UE). The terminal UE may perform communication based on the 5G mobile network with the first base station BS1, and the CRS received from the second base station BS2 may be noise to be removed from the terminal UE's point of view.

As an exemplary embodiment, the UE may decode the received PDSCH while canceling interference caused by the received CRS. That is, the processing time for the PDSCH of the UE may include a time for removing interference caused by the CRS and a time for decoding the PDSCH.

)을 기반으로 Ack/Nack 타이밍(K1) 및 심볼 기준 시간 갭(Tgap_symb)을 결정할 수 있다. 이하에서는, 도 7b와 중복되는 내용은 생략한다.Referring to FIG. 12B, the base station (BS) processes the PDSCH of the first terminal (UE1) (

), the Ack/Nack timing (K1) and the symbol reference time gap (Tgap_symb) may be determined. In the following, descriptions overlapping with those of FIG. 7B are omitted.

)은 다음의 [수학식 4]와 같이 연산될 수 있다.As an exemplary embodiment, the processing time for the PDSCH of the first terminal UE1 (

) can be calculated as in [Equation 4] below.

[Equation 4]

는 3GPP TS 38.214에서의 5.3 절에 구체적으로 명시되어 있으며, 이하에서는, 본 개시의 예시적 실시예들에 따른 제1 및 제2 시간 파라미터를 중심으로 서술된다.

is specifically specified in section 5.3 of 3GPP TS 38.214, and hereinafter, the first and second time parameters according to exemplary embodiments of the present disclosure are mainly described.

이고, 제2 시간 파라미터는

에 합산되는

일 수 있다. 일부 실시예에서 시간 파라미터는 제1 및 제2 시간 파라미터(

,

) 중 어느 하나만을 포함할 수 있으며, 이 때,

는 [수학식 5] 또는 [수학식 6]과 같이 연산될 수 있다.As an exemplary embodiment, the time parameter set to have a value corresponding to the time required for interference cancellation by the CRS may include the first and second time parameters. The first time parameter is

, and the second time parameter is

added to

can be In some embodiments, the time parameters include first and second time parameters (

,

) may include only one of them, in which case,

Can be calculated as in [Equation 5] or [Equation 6].

[Equation 5]

[Equation 6]

)만을 고려하여 처리 시간을 연산하는 실시예이고, [수학식 6]은 제2 시간 파라미터(

)만을 고려하여 처리 시간을 연산하는 실시예이다. 이하에서는, 제1 및 제2 시간 파라미터(

,

)를 고려하여 처리 시간을 연산하는 실시예를 중심으로 서술되나, 본 개시는 이에 국한되지 않으며, 제1 및 제2 시간 파라미터(

,

) 중 어느 하나만을 고려하여 처리 시간을 연산할 수 있다.[Equation 5] is the first time parameter (

), and [Equation 6] is the second time parameter (

) This is an embodiment in which the processing time is calculated in consideration of only. Hereinafter, the first and second time parameters (

,

), but the present disclosure is not limited thereto, and the first and second time parameters (

,

), the processing time can be calculated by considering only one of them.

)는 X2 값으로 설정될 수 있으며, 제2 시간 파라미터(

)는 Y2 값으로 설정될 수 있다. 예시적 실시예로, X2 및 Y2은 미리 약속되어 고정된 값일 수 있다. 즉, 단말(UE)은 CRS에 의한 간섭 제거가 활성화된 때에, 이에 응답하여 제1 시간 파라미터(

)를 X2로 설정하고, 제2 시간 파라미터를 Y2으로 설정한 후, [수학식 4]에 따라 처리 시간(

)을 연산할 수 있다.Referring further to FIG. 12C, the first time parameter (

) may be set to the value of X2, and the second time parameter (

) may be set as the Y2 value. As an exemplary embodiment, X2 and Y2 may be predetermined and fixed values. That is, when interference cancellation by the CRS is activated, the UE responds to the first time parameter (

) is set to X2, and the second time parameter is set to Y2, and then the processing time (Equation 4) according to

) can be computed.

In an exemplary embodiment, X2 and Y2 may be variable. For example, the terminal may adjust X2 and Y2 based on the slot configuration. The UE may adjust X2 and Y2 based on the subcarrier interval or the number of symbols included in one slot. As another example, the UE may adjust X2 and Y2 based on the number of CRSs overlapping with the data frequency region to which the PDSCH is allocated. As the number of overlapping CRSs increases, the processing time for the PDSCH of the UE may increase. Meanwhile, X2 and Y2 for generating the processing time for the PDSCH may correspond to various values according to the configuration of the slot, and the contents thereof may be defined as standard in 3GPP TS 38.214 or the like.

13 is a flowchart illustrating a method of operating a terminal according to an exemplary embodiment of the present disclosure.

Referring to FIG. 13, in step S200, the UE may generate a processing time for the PDSCH by considering the time required for interference cancellation by the CRS. The UE may generate the processing time for the PDSCH based on the time required for interference cancellation by the CRS and the time required for decoding the PDSCH. In step S210, the terminal may compare the processing time with the second reference time. The second reference time may have a prearranged value when interference cancellation by CRS is activated, and may be different from the second reference time when interference cancellation by CRS is deactivated. For example, the second reference time when interference cancellation by CRS is activated may be longer than the second reference time when interference cancellation by CRS is deactivated. In step S220, the terminal may determine the performance of the terminal based on the comparison result. For example, when the processing time for the PDSCH is shorter than the second reference time, the terminal may determine that the terminal performance is good and set the terminal performance to a first value indicating this. When the processing time for the PDSCH is longer than or equal to the second reference time, the terminal may determine that the terminal performance is bad and set the terminal performance to a second value indicating this. In step S230, the terminal may transmit information including terminal performance to the base station. The base station may perform downlink and uplink scheduling with the terminal by referring to the terminal performance in the received information.

14A is a flowchart illustrating a specific embodiment of step S200 of FIG. 13, and FIG. 14B is a table in which values of first and second time parameters according to a slot configuration according to an exemplary embodiment of the present disclosure are organized. to be.

Referring to FIG. 14a, in step S201a, the terminal may check the slot configuration in communication based on the 5G mobile network. A slot configuration may include at least one of a subcarrier interval and the number of symbols included in one slot. In step S202a, the terminal may determine a value of at least one time parameter related to interference cancellation by CRS based on the slot configuration.

14B, at least one time parameter related to interference cancellation by CRS includes first and second time parameters, and values of the first and second time parameters may be set differently according to a slot configuration. . The table of FIG. 14B may be pre-agreed and defined as a standard. As an exemplary embodiment, in the first slot configuration (CONFIG1), the first and second time parameters may be set to X12 and Y12, respectively. In the second slot configuration (CONFIG2), the first and second time parameters may be set to X22 and Y22, respectively. In case of the third slot configuration (CONFIG3), the first and second time parameters may be set to X32 and Y32, respectively. In this way, the values of the first and second time parameters corresponding to the plurality of slot configurations may be promised in advance.

Returning to FIG. 14A, in step S202a, the UE may determine the values of the first and second time parameters related to interference cancellation by the CRS with reference to the table of FIG. 14B. In step S203a, the UE may calculate the processing time for the PDSCH to which the value of at least one time parameter related to interference cancellation by CRS is applied. Thereafter, step S210 (FIG. 13) follows.

FIG. 15 is a flowchart for explaining a specific embodiment of step S200 of FIG. 13 .

Referring to FIG. 15, in step S201b, the UE can check the number of CRS symbols overlapped with the data frequency domain to which the PDSCH is allocated. As an exemplary embodiment, the UE may check the number of overlapping CRS symbols based on the number of antenna ports related to the CRS and the type of frame including the CRS. In step S202b, the UE may determine a value of at least one time parameter related to interference cancellation by CRS based on the number of overlapped CRS symbols. In step S203b, the terminal may calculate the processing time for the PDSCH to which the value of at least one time parameter related to interference cancellation by CRS is applied. Thereafter, step S210 (FIG. 13) follows.

16A is a flowchart for explaining a method of operating a terminal according to an exemplary embodiment of the present disclosure, and FIG. 16B is a diagram for explaining the number of overlapped CRSs according to the number of antenna ports. In FIG. 16B, it is described assuming one physical resource block (PRB) composed of 12 subcarriers and 14 OFDM symbols. However, since this is only an exemplary embodiment, it is clear that the technical idea of the present disclosure is not limited thereto.

Referring to FIG. 16A, in step S300a, the UE may check the number of CRS-related antenna ports. Depending on the number of CRS-related antenna ports, the number of CRSs overlapping with the data frequency region to which the PDSCH of the UE is allocated may be different. Therefore, the UE can roughly check the number of CRSs overlapping with the data frequency domain based on the number of CRS-related antenna ports.

Referring further to FIG. 16B, when the number of antenna ports is '0', eight CRSs (AP0) may be allocated and transmitted to the terminal in one physical resource block (PRB). When the number of antenna ports is '1', eight CRSs (AP1) may be allocated and transmitted to the terminal in one physical resource block (PRB). When the number of antenna ports is '2', four CRSs (AP2) may be allocated to one physical resource block (PRB) and transmitted to the terminal. When the number of antenna ports is '3', four CRSs (AP3) may be allocated to one physical resource block (PRB) and transmitted to the terminal. That is, the number of CRSs allocated to one physical resource block (PRB) may be different according to the number of antenna ports, which may be related to the number of CRSs overlapping the data frequency domain.

Returning to FIG. 16A, in step S310a, the UE may determine the value of at least one time parameter related to interference cancellation by CRS based on the number of antenna ports. For example, a value of at least one time parameter when the number of antenna ports is '0' or '1' may be smaller than a value of at least one time parameter when the number of antenna ports is '2' or '3'. In step S320a, the UE may calculate the processing time for the PDSCH to which the value of at least one time parameter related to interference cancellation by CRS is applied in step S310a.

17A is a flowchart for explaining another example of the operation method of the terminal of FIG. 15, and FIGS. 17B and 17C are diagrams for explaining the number of overlapped CRSs according to frame types. In FIG. 17B, it is described on the premise that one physical resource block (PRB) composed of 12 subcarriers and 14 OFDM symbols, the length of a slot and the length of a subframe are the same. However, since this is only an exemplary embodiment, it is clear that the technical idea of the present disclosure is not limited thereto.

Referring to FIG. 17A, in step S300b, the terminal may check the frame type including the CRS. For example, the frame type including the CRS may be a normal frame or a Multimedia Broadcast multicast service Single Frequency Network (MBSFN) frame. Depending on the frame type, the number of CRSs overlapping with the data frequency domain to which the PDSCH of the UE is allocated may be different. Therefore, the terminal can roughly check the number of CRSs overlapping with the data frequency domain based on the frame type.

Referring further to FIG. 17B, when the frame type including the CRS is an MBSFN frame, 8 CRSs (LTE CRSs) based on the LTE mobile network may be allocated over the first two symbols.

Referring further to FIG. 17C, when the frame type including the CRS is a normal frame, 16 CRSs (LTE CRSs) based on the LTE mobile network may be allocated at predetermined symbol intervals. That is, the number of CRSs included in one physical resource block (PRB) in the MBSFN frame may be smaller than the number of CRSs included in one physical resource block (PRB) in the normal frame. That is, the number of CRSs allocated to one physical resource block (PRB) may be different according to the frame type, and this may be related to the number of CRSs overlapping the data frequency domain.

Returning to FIG. 17a, in step S310b, the terminal may check whether the frame type is an MBSFN frame. When step S310b is 'YES', the terminal may set at least one time parameter related to interference cancellation by CRS to a first value following step S320b. When step S310b is 'NO', the terminal may set at least one time parameter related to interference cancellation by CRS to the second value following step S330b. For example, the first value may be smaller than the second value. In step S340b, the terminal may calculate the processing time for the PDSCH using at least one time parameter having a determined value. Thereafter, step S210 (FIG. 13) may follow.

18 is a block diagram illustrating an electronic device 1000 according to an exemplary embodiment of the present disclosure.

Referring to FIG. 18 , an electronic device 1000 includes a memory 1010, a processor unit 1020, an input/output control unit 1040, a display unit 1050, an input device 1060, and a communication processing unit 1090. can include Here, a plurality of memories 1010 may exist. Here's a look at each component:

The memory 1010 may include a program storage unit 1011 for storing a program for controlling the operation of an electronic device and a data storage unit 1012 for storing data generated during program execution. The data storage unit 1012 may store data necessary for the operation of the application program 1013 and the processing time generating program 1014 . As an exemplary embodiment, the data storage unit 1012 may store a table TB in which values of time parameters required to generate a processing time for a PDSCH according to exemplary embodiments of the present disclosure are arranged. For example, the table TB may follow disclosed standards such as 3GPP TS 38.214.

The program storage unit 1011 may include an application program 1013 and a processing time generation program 1014 . Here, the program included in the program storage unit 1011 may be expressed as an instruction set as a set of instructions. The application program 1013 may include program codes for executing various applications operating in the electronic device 1000 . That is, the application program 1013 may include codes (or commands) related to various applications driven by the processor 1022 . Processing time generation program 1014 may include control codes for generating processing times for PSDCH according to exemplary embodiments of the present disclosure. As an exemplary embodiment, the processor 1022 sets a value of at least one time parameter based on an activated function in the 5G mobile network by executing the processing time generating program 1014, and uses the value of the time parameter for the PDSCH. Processing time can be created.

Meanwhile, the electronic device 1000 may include a communication processing unit 1090 that performs communication functions for voice communication and data communication. The processor 1022 may receive an MBS-related PDSCH or an LTE mobile network-based CRS together with a 5G mobile network-based PDSCH from a base station through the communication processing unit 1090 .

The peripheral device interface 1023 may control a connection between the input/output control unit 1040 , the communication processing unit 1090 , the processor 1022 , and the memory interface 1021 . The processor 1022 controls a plurality of base stations to provide a corresponding service using at least one software program. In this case, the processor 1022 may execute at least one program stored in the memory 1010 to provide a service corresponding to the corresponding program.

The input/output control unit 1040 may provide an interface between an input/output device such as the display unit 1050 and the input device 1060 and the peripheral device interface 1023 . The display unit 1050 displays status information, input text, a moving picture, a still picture, and the like. For example, the display unit 1050 may display application program information driven by the processor 1022 .

The input device 1060 may provide input data generated by selection of an electronic device to the processor unit 1020 through the input/output controller 1040 . In this case, the input device 1060 may include a keypad including at least one hardware button and a touch pad that detects touch information. For example, the input device 1060 may provide touch information, such as a touch detected through a touch pad, a touch movement, or a touch release, to the processor 1022 through the input/output control unit 1040 .

19 is a diagram illustrating communication devices generating a processing time for a PDSCH according to an exemplary embodiment of the present disclosure.

Referring to FIG. 19 , a home device 2100, a home appliance 2120, an entertainment device 2140, and an access point (AP) 2200 each generate a processing time for a PDSCH according to embodiments of the present disclosure to generate their own processing time. performance can be determined. The determined capabilities can be used to configure each communication network. In some embodiments, the home device 2100, the home appliance 2120, the entertainment device 2140, and the AP 2200 may configure an Internet of Things (IoT) network system. It will be understood that the communication devices shown in FIG. 19 are just examples, and that the embodiments according to the exemplary embodiments of the present disclosure may be applied to other communication devices not shown in FIG. 19 .

As above, exemplary embodiments have been disclosed in the drawings and specifications. Although the embodiments have been described using specific terms in this specification, they are only used for the purpose of explaining the technical idea of the present disclosure, and are not used to limit the scope of the present disclosure described in the claims. . Therefore, those of ordinary skill in the art will understand that various modifications and equivalent other embodiments are possible therefrom. Therefore, the true technical scope of protection of the present disclosure should be determined by the technical spirit of the appended claims.

Claims (20)

A method of operating a terminal performing communication based on a 5G mobile network with a first base station,
Setting a value of at least one time parameter based on an activated function in the 5G mobile network;
generating a processing time for a physical downlink shared channel (PDSCH) from the first base station based on the value of the at least one time parameter;
Comparing the processing time with a reference time to determine capability of the terminal; and
and transmitting information including the performance of the terminal to the first base station. According to claim 1,
The activated function is
A method of operating a terminal comprising at least one of MBS (Multicast/Broadcast Services) and CRS (Cell-specific Reference Signal) interference cancellation. According to claim 1,
When the activated function is MBS,
The PDSCH includes a first PDSCH of the MBS and a second PDSCH based on unicast or group cast;
Setting the value of the at least one time parameter,
Operation of the terminal characterized in that the value of the at least one time parameter is determined based on an overlap pattern between a common frequency region to which the first PDSCH is allocated and a data frequency region to which the second PDSCH is allocated Way. According to claim 1,
When the activated function is interference cancellation by CRS,
Setting the value of the at least one time parameter,
A method of operating a terminal, characterized in that setting a value of the at least one time parameter based on the number of LTE mobile network-based CRSs received from a second base station overlapping a data frequency region to which the PDSCH is allocated. According to claim 1,
Setting the value of the at least one time parameter,
The operating method of the terminal, characterized in that the at least one time parameter has a predetermined value corresponding to the function supported by the 5G mobile network. According to claim 1,
The reference time when the function supported by the 5G mobile network is MBS is different from the reference time when the function supported by the 5G mobile network is interference cancellation by CRS. . According to claim 1,
The reference time is
A method of operation of a terminal, characterized in that different from the reference time when the function is inactivated. According to claim 1,
The processing time includes a time required for a processing operation corresponding to the activated function. In the operating method of a terminal performing communication based on a 5G mobile network with a base station,
Setting at least one time parameter to have a value corresponding to a time required for MBS (Multicast/Broadcast Services) related data processing in the 5G mobile network;
generating a processing time for a Physical Downlink Shared Channel (PDSCH) by reflecting the value of the at least one time parameter;
determining performance of the terminal based on the processing time; and
and transmitting information including the performance of the terminal to the base station. According to claim 9,
The PDSCH includes a first PDSCH of the MBS and a second PDSCH based on unicast or group cast. According to claim 10,
Setting the at least one time parameter,
The method of operating a terminal, characterized in that setting the at least one time parameter based on the number of common frequency domains to which the first PDSCH is allocated overlapping the data frequency domain to which the second PDSCH is allocated. According to claim 11,
As the number increases, the value of the at least one time parameter increases. According to claim 10,
Setting the at least one time parameter,
characterized in that the at least one time parameter is set based on a frequency axis width of an overlapping region between a data frequency domain to which the second PDSCH is allocated and a common frequency domain to which the first PDSCH is allocated. According to claim 10,
Setting the at least one time parameter,
The method of operating a terminal, characterized in that setting the at least one time parameter based on whether a data frequency domain to which the second PDSCH is allocated overlaps with a common frequency domain to which the first PDSCH is allocated. A method of operating a terminal performing communication based on a 5G mobile network with a first base station,
setting at least one time parameter to have a value corresponding to a time required for interference cancellation by a cell-specific reference signal (CRS) received from a second base station;
generating a processing time for a Physical Downlink Shared Channel (PDSCH) by reflecting the value of the at least one time parameter;
determining performance of the terminal based on the processing time; and
and transmitting information including the performance of the terminal to the base station. According to claim 15,
Setting the at least one time parameter,
A method of operating a terminal, characterized in that setting the at least one time parameter based on the slot configuration of the PDSCH. According to claim 16,
The slot configuration relates to at least one of a subcarrier interval of the PDSCH and the number of symbols included in one slot. According to claim 17,
and performing interference cancellation by the CRS in a method selected according to at least one of the subcarrier interval and the number of symbols. According to claim 15,
Setting the value of the at least one time parameter,
The method of operating a terminal, characterized in that for setting the at least one time parameter based on the number of the CRS overlapping with the data frequency domain to which the PDSCH is allocated. According to claim 15,
Setting the value of the at least one time parameter,
A method of operating a terminal, characterized in that for setting the at least one time parameter based on whether the frame including the CRS is an MBSFN frame.

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