Method and apparatus for transmitting / receiving signal in wireless communication system

Abstract

A method and apparatus for transmitting / receiving a signal in a wireless communication system disclosed in the present specification includes switching an operation of an active bandwidth portion (BWP) based on a switching pattern in an NES mode.

Description

Technical Field

[0001] The present disclosure relates to a method and an apparatus for use in a wireless communication system. Background Art

[0002] In general, wireless communication systems are being developed to diversely cover a wide range to provide communication services such as audio communication services, data communication services, etc. Wireless communication is a multiple access system capable of supporting communication with multiple users by sharing available system resources (e.g., bandwidth, transmission power, etc.). For example, the multiple access system may include one of a code division multiple access (CDMA) system, a frequency division multiple access (FDMA) system, a time division multiple access (TDMA) system, an orthogonal frequency division multiple access (OFDMA) system, a single carrier frequency division multiple access (SC-FDMA) system, and the like. Summary of the invention

[0003] Technical issues

[0004] An object of the present disclosure is to provide a signal transmitting and receiving method and apparatus thereof for efficiently transmitting and receiving a signal in a wireless communication system.

[0005] Those skilled in the art will understand that the objectives that can be achieved by the present disclosure are not limited to the contents that have been specifically described above, and the above and other objectives that can be achieved by the present disclosure will be more clearly understood from the following detailed description.

[0006] Technical Solution

[0007] The present disclosure provides a method and apparatus for transmitting and receiving signals in a wireless communication system.

[0008] In one aspect of the present disclosure, a method for configuring radio resources by a user equipment (UE) in a wireless communication system is provided. The method includes: receiving a configuration of a switching pattern between a first bandwidth part (BWP) and a second BWP for a network energy saving (NES) mode; switching an active BWP from the first BWP to the second BWP according to the switching pattern based on data to be sent or received; and sending or receiving data in the second BWP.

[0009] In another aspect of the present disclosure, an apparatus, a processor, and a storage medium for executing a signal receiving method are provided. In addition, in another aspect of the present disclosure, an apparatus, a processor, and a storage medium for executing a signal transmitting method are provided.

[0010] The apparatus may include an autonomous driving vehicle communicable with at least a UE, a network, and with another autonomous driving vehicle other than the communication apparatus.

[0011] The above-mentioned aspects of the present disclosure are only some preferred embodiments of the present disclosure, and those skilled in the art can derive and understand various embodiments reflecting the technical features of the present disclosure from the following detailed description of the present disclosure.

[0012] Beneficial Effects

[0013] According to one embodiment of the present disclosure, when a signal is transmitted and received between communication devices, the signal can be transmitted and received more efficiently based on an operation different from that of the related art.

[0014] Those skilled in the art will understand that the technical effects that can be achieved by the present disclosure are not limited to the technical effects specifically disclosed above, and other technical effects of the present disclosure can be more clearly understood from the detailed description below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The radio frame structure is shown.

[0016] Figure 2 The resource grid during the duration of a time slot is illustrated.

[0017] Figure 3 Figure 1 shows a self-contained time slot structure.

[0018] Figure 4 is a diagram illustrating a method for transmitting / receiving a signal according to an embodiment of the present disclosure.

[0019] Figures 5 to 8 A device according to an embodiment of the present disclosure is shown. DETAILED DESCRIPTION

[0020] The following technologies may be used in various wireless access systems such as code division multiple access (CDMA), frequency division multiple access (FDMA), time division multiple access (TDMA), orthogonal frequency division multiple access (OFDMA), single carrier frequency division multiple access (SC-FDMA), etc. CDMA may be implemented as a radio technology such as Universal Terrestrial Radio Access (UTRA) or CDMA2000. TDMA may be implemented as a radio technology such as Global System for Mobile Communications (GSM) / General Packet Radio Service (GPRS) / Enhanced Data Rates for GSM Evolution (EDGE). OFDMA may be implemented as a radio technology such as Institute of Electrical and Electronics Engineers (IEEE) 802.11 (Wireless Fidelity (WiFi)), IEEE 802.16 (Worldwide Interoperability for Microwave Access (WiMAX)), IEEE 802.20, Evolved UTRA (E-UTRA), etc. UTRA is part of Universal Mobile Telecommunications System (UMTS). 3rd Generation Partnership Project (3GPP) Long Term Evolution (LTE) is a part of Evolved UMTS (E-UMTS) using E-UTRA, and LTE-advanced (LTE-A) is an evolution of 3GPP LTE. 3GPP New Radio or New Radio Access Technology (NR) is an evolved version of 3GPP LTE / LTE-A.

[0021] For clarity of description, the present disclosure will be described in the context of 3GPP communication systems (e.g., LTE and NR), which should not be construed as limiting the spirit of the present disclosure. LTE refers to technology beyond 3GPP TS 36.xxx version 8. Specifically, LTE technology beyond 3GPP TS 36.xxx version 10 is called LTE-A, and LTE technology beyond 3GPP TS 36.xxx version 13 is called LTE-A pro. 3GPP NR is a technology beyond 3GPP TS 38.xxx version 15. LTE / NR may be referred to as a 3GPP system. "xxx" specifies a technical specification number. LTE / NR may be collectively referred to as a 3GPP system. Background technology, terms, abbreviations, etc. as used herein refer to technical specifications published prior to the present disclosure. For example, the following documents may be referenced.

[0022] 3GPP NR

[0023] -38.211: Physical channels and modulation

[0024] -38.212: Multiplexing and channel coding

[0025] -38.213: Physical layer procedures for control

[0026] -38.214: Physical layer procedures for data

[0027] -38.300: NR and NG-RAN general description

[0028] -38.331: Radio Resource Control (RRC) Protocol Specification

[0029] Figure 1 The radio frame structure for NR is shown.

[0030] In NR, UL and DL transmissions are configured on a frame basis. Each radio frame has a length of 10ms and is divided into two 5ms half-frames. Each half-frame is divided into five 1ms subframes. A subframe is divided into one or more slots, and the number of slots in a subframe depends on the subcarrier spacing (SCS). Depending on the cyclic prefix (CP), each slot includes 12 or 14 OFDM (A) symbols. When a normal CP is used, each slot includes 14 OFDM symbols. When an extended CP is used, each slot includes 12 OFDM symbols. Symbols may include OFDM symbols (or CP-OFDM symbols) and SC-FDMA symbols (or discrete Fourier transform-extended-OFDM (DFT-s-OFDM) symbols).

[0031] Table 1 exemplarily shows that the number of symbols per slot, the number of slots per frame, and the number of slots per subframe vary according to the SCS in the normal CP case.

[0032] [Table 1]

[0033]

[0034] *N slot symb : The number of symbols in a time slot

[0035] *N frame, u slot : Number of time slots in a frame

[0036] *N subframe, u slot : Number of time slots in a subframe

[0037] Table 2 shows that the number of symbols per slot, the number of slots per frame, and the number of slots per subframe vary according to SCS in the case of extended CP.

[0038] [Table 2]

[0039]

[0040] In the NR system, different OFDM(A) parameter sets (e.g., SCS, CP length, etc.) may be configured for multiple cells aggregated for one UE. Therefore, the (absolute time) duration of a time resource (e.g., a subframe, a time slot, or a transmission time interval (TTI)) consisting of the same number of symbols (referred to as a time unit (TU) for convenience) may be configured differently between the aggregated cells.

[0041] In NR, various parameter sets (or SCS) can be supported to support various 5th generation (5G) services. For example, with an SCS of 15kHz, wide areas in the traditional cellular band can be supported, while with an SCS of 30kHz or 60kHz, dense urban areas, lower latency, and wide carrier bandwidth can be supported. For an SCS of 60kHz or higher, bandwidths greater than 24.25kHz can be supported to overcome phase noise.

[0042] The NR frequency band can be defined by two types of frequency ranges FR1 and FR2. FR1 and FR2 can be configured as described in Table 3 below. FR2 can be millimeter wave (mmW).

[0043] [Table 3]

[0044]

[0045] Figure 2 The resource grid during the duration of one time slot is shown.

[0046] A slot includes multiple symbols in the time domain. For example, a slot includes 14 symbols in the normal CP case and 12 symbols in the extended CP case. A carrier includes multiple subcarriers in the frequency domain. A resource block (RB) can be defined by multiple (e.g., 12) consecutive subcarriers in the frequency domain. Multiple RB interleavings (referred to as interleavings) can be defined in the frequency domain. Interleaving m∈{0,1,…, M-1} can be composed of (common) RBs {m, M+m, 2M+m, 3M+m,…}. M represents the number of interleavings. A bandwidth part (BWP) can be defined by multiple consecutive (physical) RBs ((P)RBs) in the frequency domain and corresponds to a parameter set (e.g., SCS, CP length, etc.). A carrier can include up to N (e.g., five) BWPs. Data communication can be performed in an active BWP, and only one BWP can be enabled for a UE. Each element in a resource grid can be referred to as a resource element (RE), to which a complex symbol can be mapped.

[0047] In a wireless communication system, a UE receives information from a BS in a downlink (DL), and the UE transmits information to the BS in an uplink (UL). Information exchanged between the BS and the UE includes data and various control information, and there are various physical channels / signals according to the type / purpose of the information exchanged therebetween. A physical channel corresponds to a set of resource elements (REs) that carry information originating from a higher layer. A physical signal corresponds to a set of REs that are used by the physical layer but do not carry information originating from a higher layer. The higher layer includes a medium access control (MAC) layer, a radio link control (RLC) layer, a packet data convergence protocol (PDCP) layer, a radio resource control (RRC) layer, and the like.

[0048] DL physical channels include physical broadcast channel (PBCH), physical downlink shared channel (PDSCH) and physical downlink control channel (PDCCH). DL physical signals include DL reference signal (RS), primary synchronization signal (PSS) and secondary synchronization signal (SSS). DL RS includes demodulation reference signal (DM-RS), phase tracking reference signal (PT-RS) and channel state information reference signal (CSI-RS). UL physical channels include physical random access channel (PRACH), physical uplink shared channel (PUSCH) and physical uplink control channel (PUCCH). UL physical signals include UL RS. UL RS includes DM-RS, PT-RS and sounding reference signal (SRS).

[0049] Figure 3 Figure 1 shows the structure of a self-contained time slot.

[0050] In the NR system, a frame has a self-contained structure in which a DL control channel, DL or UL data, a UL control channel, etc. can all be included in one time slot. For example, the first N symbols in the time slot (hereinafter, the DL control region) can be used to send a DL control channel, and the last M symbols in the time slot (hereinafter, the UL control region) can be used to send a UL control channel. N and M are integers greater than or equal to 0. The resource region (hereinafter, the data region) between the DL control region and the UL control region can be used for DL ​​data transmission or UL data transmission. For example, the following configuration can be considered. The various parts are listed in chronological order.

[0051] In the present disclosure, a base station (BS) may be, for example, a gNodeB (gNB).

[0052] BWP switching in Network Energy Saving (NES) mode.

[0053] The above content can be applied in combination with the methods proposed in the present disclosure, which will be described later. Alternatively, the content can illustrate the technical features of the methods proposed in the present disclosure.

[0054] In addition, the following methods can also be applied to the above-mentioned NR system (licensed band) or shared spectrum. Therefore, it is obvious that the terms, expressions and structures in this document can be modified to be suitable for the system so as to implement the technical ideas of the present disclosure in the corresponding system.

[0055] New technologies and operation methods may be discussed in the future to improve energy saving capabilities from the perspective of transmission and reception at the BS. The following is the rationale for the study items approved in Release 18 for this purpose.

[0056] [Table 4]

[0057]

[0058] The present disclosure proposes techniques and configuration / operation methods that can be introduced for energy saving at a BS.

[0059] In order to save energy at the BS, a network energy saving (NES) mode (i.e., a mode for saving energy at the BS) may be defined. A BS operating in the NES mode may reduce its power consumption by suspending (maintaining) DL or UL transmission during a specific period or limiting transmission and reception operations in a specific frequency band. In the present disclosure, the NES mode may refer to an operation mode of a BS and / or UE defined / configured / indicated for such a purpose. Additionally, in the present disclosure, an operation mode of a UE (or a cell) that is not configured with the NES mode (or a configuration based on the NES) is referred to as a non-NES mode to distinguish the operation mode from the NES mode.

[0060] The NES mode may be maintained for only a specific period of time. In a proposal described later, the period of time during which the BS operates in the NES mode is referred to as the NES duration. The NES mode may be valid only for specific frequency resources. In a proposal described later, the frequency resources corresponding to the NES mode are referred to as NES bands.

[0061] The NES mode may be configured by the BS through separate higher layer signaling or higher layer configuration. Alternatively, the NES mode may be dynamically configured to the BS / UE through other control channels (e.g., based on DCI indications) or data channels (e.g., PDSCH, PUSCH). During the NES mode, the BS may turn on / off specific times, frequencies, antenna resources, etc., and may not send / receive related data channels, control channels, or control signals. During the NES mode, the UE may operate by anticipating that specific times / frequencies / antenna resources will be turned on / off and related channels / signals will not be sent.

[0062] A BWP for NES mode (NES-BWP) may be defined / configured for a UE for which NES mode has been defined / configured. The NES-BWP may be set as a separate BWP that operates only in NES mode. In this case, the BWP for non-NES mode may not be defined or deactivated. Alternatively, a specific (single) BWP may be configured differently for NES mode and non-NES mode. For example, a specific BWP may be set to a NES-BWP during an NES duration and to a different BWP during other durations. The configuration method and constraints of the NES-BWP may be defined / configured separately from the conventional BWP. For example, in the NES-BWP, PDCCH monitoring may not be performed, but non-periodic CSI-RS signals and reports may be configured. As another example, the periodicity of the periodic CSI-RS may be reinterpreted in the NES-BWP.

[0063] Unique BWP switching operations in NES mode can be defined. For example, in conventional BWP switching configuration / operation, when a BWP other than the default BWP is the active BWP, a timer is set. If the timer expires, the current active BWP is switched to inactive and the default BWP is restored as the new active BWP. On the other hand, in NES mode, if the timer expires, the current active BWP can be switched to inactive and the dormant BWP or NES-BWP can be switched to the new active BWP. Alternatively, if the timer expires, the current active BWP can be switched to inactive and the default BWP can be switched to the new active BWP (as in conventional operation). If DL / UL transmission is not scheduled / configured in the default BWP within a specific period of time, the default BWP can be switched to inactive and the dormant BWP or NES-BWP can be switched to the new active BWP.

[0064] The proposed methods described later can be applied independently under the conditions described for each method or configured only during the NES duration. Alternatively, these methods can be applied only in the NES band.

[0065] In the proposed method described later, operating in non-NES mode means any NR configuration / operation that is not configured for NES (e.g., a configuration / operation specified in a Release 15, Release 16, or Release 17 NR specification). In the proposed method described later, operation switched to NES mode may only apply to UEs / cells configured for NES. Additionally, NES mode is not limited to a specific configuration or operation method. That is, NES mode may be any configuration or operation method defined / configured for NES. In the proposed method described later, switching to NES mode may also be understood as switching to NES-BWP.

[0066] In the proposed method described below, the expression that a special parameter (or behavior) is "configured" can be understood to mean that the parameter (or behavior) is configured for any cell, or for any special terminal, or for a configured cell for a special terminal, or for a configured DL (or UL) BWP for a special cell, or for an active DL (or UL) BWP for a special cell.

[0067] For convenience of explanation, in the present disclosure, DL BWP and / or UL BWP may be simply referred to as BWP. Unless otherwise specified, DL BWP and / or UL BWP may refer to BWP (configured for UE) or active BWP (among configured BWP).

[0068] In the proposed method described later, a MAC control element (CE) or DCI (e.g., a MAC CE or DCI that triggers BWP switching or configures / activates / deactivates a specific operation) can be transmitted in a UE-specific, UE group common, or cell-specific manner. The DCI may be scrambled with an RNTI configured in a UE-specific, UE group common, or cell-specific manner and then transmitted. The MAC CE may be transmitted through a PDSCH scheduled by a DCI scrambled with an RNTI configured in a UE-specific, UE group common, or cell-specific manner.

[0069] [1] BWP switch for NES mode.

[0070] [1-1] In an NR system, each UE can be configured with up to 4 DL (or UL) BWPs. Configuration values ​​such as bandwidth, number of RBs, SCS, etc. may vary for each BWP. Even if multiple BWPs are configured for a UE, data and control channels / signals can be sent and / or received in a single active DL (or UL) BWP. Depending on the data service that the UE is sending or receiving, the required (or appropriate) BWP may vary. Depending on the type, nature and / or pattern of the data service, it may be necessary to switch the currently active BWP configured for the UE to another BWP. BWP switching can be triggered by signaling such as RRC, MAC CE, DCI, etc.

[0071] [1-2] For each UE, it may be necessary to switch to a specific BWP at a specific time depending on the type of service (or service pattern). For example, the amount of DL services may be below a threshold most of the time, but DL services exceeding the threshold may be received with a certain periodicity during a specific time period. On the other hand, a period without DL services may occur with a certain periodicity. For semi-persistent services such as Voice over Internet Protocol (VoIP), the required frequency bandwidth may vary depending on the time period. For this type of service, a BWP switching (time) pattern may be preconfigured. Subsequently, without separate signaling indicating BWP switching (e.g., via DCI), BWP switching may be performed according to a predetermined pattern. In this case, a BWP switching pattern (based on frequency band, service type, and service pattern) may be predefined. Alternatively, the BWP switching pattern may be configured via RRC, MAC-CE, or DCI. More specifically, the predefined or configured BWP switching pattern may include: (1) the type of service to which the pattern is applied; (2) the number of periods in the pattern and the length of each period; and (3) the BWP to be used in each period. However, the present disclosure is not limited thereto. As an example, if the type of service configured for the UE is a specific service (e.g., VoIP), BWP#1 can be used as the active DL (or UL) BWP during a specific period (e.g., during frames when the SFN is even), and during another period (e.g., during frames when the SFN is odd), the active DL (or UL) BWP can be switched to BWP#2 (without separate signaling).

[0072] In addition, BWP switching based on the aforementioned pattern (or condition) can be configured through higher layer signaling such as RRC, and then activated or deactivated through MAC-CE (or DCI). Alternatively, multiple BWP switching patterns (or conditions) can be configured through higher layer signaling such as RRC, and then one of the multiple BWP switching patterns (or conditions) can be configured and / or indicated through MAC-CE (or DCI).

[0073] [1-3] The optimal BWP may vary depending on the data buffer (or HARQ buffer) status of the UE. For example, even if the BS has data to send, the appropriate BWP may be different depending on whether the UE's DL reception buffer (or UL transmission data buffer) is full or empty. If the UE's UL data transmission buffer is full, a UL BWP exceeding a predetermined size may be used to send UL data exceeding a threshold. On the other hand, if the transmission buffer is empty, a BWP less than a predetermined size may be sufficient. Therefore, a method for adaptively changing the active BWP based on the UE's data buffer status may be configured. When a BWP switching condition based on the buffer status is predefined, the BWP switching may be performed when the predetermined condition is met without separate signaling indicating the BWP switching (e.g., via DCI). In such a case, the BWP switching conditions (band, buffer type, etc.) may be predefined or configured through RRC, MAC-CE, or DCI. More specifically, the predefined or configured BWP switching conditions may include: (1) the type of buffer to which BWP switching is applied; (2) a threshold for BWP switching; (3) a BWP to be switched when the amount of the buffer exceeds the threshold, and a BWP to be switched when the amount of the buffer is below the threshold. However, the present disclosure is not limited to this. For example, if the amount of the UE's UL data buffer exceeds the threshold (or exceeds a predetermined percentage of a full buffer), the active BWP may be switched to BWP#1. On the other hand, if the amount of the UL data buffer is below the threshold (or below a predetermined percentage of a full buffer), the active BWP may be switched to BWP#2. In the present disclosure, the relationship described as exceeding / below may also be interpreted as above / below. In addition, the buffer status used as a reference in the method may be a status at a specific moment (periodic) or an average value within a specific period of time. The buffer status may refer to a value in a periodic or non-periodic buffer status report from the UE.

[0074] Alternatively, the BS may predict data to be exchanged with the UE, configure a specific BWP switching pattern, and indicate the BWP switching pattern to the UE.

[0075] In addition, BWP switching based on the aforementioned pattern (or condition) may be configured through higher layer signaling such as RRC, and then activated or deactivated through MAC-CE (or DCI). Alternatively, multiple BWP switching patterns (or conditions) may be configured through higher layer signaling such as RRC, and one of the BWP switching patterns (or conditions) may be configured and / or indicated through MAC-CE (or DCI).

[0076] [1-4] In a BWP switching operation configured according to the above methods [1-2] and [1-3], the BWPs before and after the switching may be limited to include only overlapping BWPs. For example, two BWPs used for switching: BWP#1 and BWP#2 may completely overlap. Specifically, BWP#1 may include all RBs of BWP#2. Alternatively, BWP#1 and BWP#2 may partially overlap. Specifically, some RBs of BWP#1 may be the same as RBs of BWP#2. The pattern-based (or condition-based) BWP switching operation described in [1-2] and [1-3] may be configured and / or applied only when two BWPs are in an overlapping relationship. For switching between overlapping BWPs, a relatively short BWP switching delay can be expected.

[0077] [1-5] The methods described in [1-2] and [1-3] may be configured together (ie, the BWP switching pattern or the BWP switching condition may be determined or configured by considering both the traffic pattern and the buffer status).

[0078] [1-6] The method of configuring a BWP switching pattern (or BWP switching condition) described in [1-2], [1-3], and [1-4] is not necessarily limited to being configured and / or applied using the type and / or pattern of traffic or buffer status. In other words, based on metrics other than the traffic pattern and / or buffer status, it is possible to configure a BWP switching pattern or condition in such a way that a BWP switching is automatically performed (without a BWP switching command), as described in [1-2] and / or [1-3].

[0079] When one of the methods described in [1-2] to [1-6] is configured, the UE may perform BWP switching according to the determined / configured switching pattern (or condition). However, as an exception, a separate DCI may be used to configure and / or indicate that switching according to the determined pattern (or condition) is not performed during a specific period. For example, when BWP#1 has a smaller bandwidth than BWP#2 and a pattern for repeatedly switching between BWP#1 and BWP#2 is configured, if BWP#2 is temporarily needed while BWP#1 is the active BWP, it may be necessary to disable BWP switching according to the pattern (or condition) during a specific period. To this end, a separate DCI may be used to configure and / or indicate that pattern-based (or condition-based) BWP switching operations are disabled during a specific period. For configuration and / or indication via DCI, a DCI for scheduling PDSCH (or PUSCH) or a separate dedicated DCI (i.e., non-scheduled DCI) may be used. As another method, pattern-based (or condition-based) BWP switching may be configured through higher layer signaling such as RRC, and then activated or deactivated via MAC-CE (or DCI). In addition, as described above, an operation of temporarily disabling a BWP switching pattern may be performed.

[0080] Alternatively, if data or hybrid automatic repeat request acknowledgement (HARQ-ACK) transmission to be transmitted (or received) occurs in the currently configured active BWP, the UE may maintain the current BWP until data transmission / reception and / or HARQ transmission is completed, and ignore the BWP change according to the preconfigured BWP switching pattern. In this case, the UE may switch from the active BWP to the scheduled BWP immediately after data transmission / reception and / or HARQ transmission is completed. Alternatively, the UE may skip the BWP switching that overlaps with the period from the occurrence to the completion of data transmission / reception and / or HARQ transmission.

[0081] [1-8] The methods described in [1-2] to [1-7] can be applied in units of RB sets (or RB set groups). In this case, an RB set may refer to contiguous RBs belonging to a single BWP. An RB set group may refer to multiple contiguous RB sets. In an RB set (or in an RB set group), the number and position of RBs may be configured for each SCS through RRC signaling. When the number and position of RBs are configured, the UE may send and / or receive control channels such as PDCCH and data channels such as PDSCH and / or PUSCH only within the RB set (or RB set group) in the active BWP. More specifically, as mentioned in [1-2], [1-3], and [1-4], a pattern for switching from a specific RB set (or RB set group) to another specific RB set (or RB set group) (among the RBs included in a single BWP) may be defined and / or configured based on the type / pattern of the service. Alternatively, conditions for switching may be defined and / or configured.

[0082] [2] Method of transitioning between normal BWP switching operation and specific BWP switching pattern

[0083] For the convenience of explanation, the BWP switching operation supported in the traditional NR Rel-15 / 16 / 17 (triggered by RRC / MAC-CE / DCI, etc.) is called BWP switching type 1, and the pattern-based (or condition-based) BWP switching method proposed in [1] is called BWP switching type 2.

[0084] [2-2] When NES operation mode is configured for the UE (or when NES-BWP is configured), BWP switching type 2 may be configured and / or applied using a normal BWP (configured for non-NES mode) and a NES-BWP. For example, based on a specific pattern (or condition), the active BWP may be periodically (or if the condition is met) switched to a normal BWP or NES-BWP (in the absence of a separate BWP switching indication). At the same time, in the case of BWP switching type 1, the active BWP may also be configured and / or indicated to switch from a normal BWP to a NES-BWP or from a NES-BWP to a normal BWP.

[0085] [2-3] A method for transitioning between BWP switching type 1 and BWP switching type 2 may be defined and / or configured. For the transition command, a specific field in the DCI for scheduling PDSCH (or PUSCH) may be used. Alternatively, a separate MAC-CE or DCI may be used for the transition command. For example, when the UE is operating with BWP switching type 1 (or type 2), if the transition to type 2 (or type 1) is configured and / or indicated by the DCI, the UE may transition to BWP switching type 2 (or type 1) after a predetermined delay (=T_a) and operate accordingly. Alternatively, when BWP switching type 1 (or type 2) is configured as the default switching type for the UE, if a BWP switching type change command is received, the UE may transition to BWP switching type 2 (or type 1). Subsequently, within a "specific time" (=T_b), the UE may operate with BWP switching type 2 (or type 1). After T_b elapses, the UE may fall back to the default switching type, which is BWP switching type 1 (or type 2). When the UE transitions from a default BWP switching type to another BWP switching type or vice versa, the UE may apply the changed BWP switching type after a delay of T_a after receiving the transition command. The values ​​of T_a and T_b may be predefined or preconfigured.

[0086] [2-4] When BWP switching type 2 is configured / applied to a UE (or cell), the BWP may be changed according to a predefined pattern (or when a specific condition is met) even if a BWP switching command is not received. Therefore, in the case of DCI scheduling PDSCH reception (or PUSCH transmission), the DCI reception time and / or k0 (or k2) configuration value may be limited to ensure that PDSCH (or PUSCH) is received (or transmitted) within the period for which the corresponding BWP is configured. For example, assume that BWP#1 (normal BWP) includes more RBs than BWP#2 (NES-BWP), and BWP switching type 2 is configured. When the active BWP is configured to switch to BWP#1 in the period [t0, t1], to switch to BWP#2 in the period [t1, t2], and to switch to BWP#1 in the period [t2, t3], PDSCH reception may be possible in the period [t0, t1] or [t2, t3] in which BWP#1 is configured, while PDSCH reception may not be performed in the period [t1, t2] in which BWP#2 is configured. The reception time of the DCI that schedules PDSCH reception and / or the k0 value (referring to a parameter indicating a time slot offset between PDCCH reception and PDSCH reception) configured / indicated by the DCI may be configured so that PDSCH is received in the period [t0, t1] or [t2, t3]. If the k0 value is configured so that PDSCH is received in the period [t1, t2], the UE may discard the corresponding PDSCH.

[0087] [2-5] When the UE is operating with a configured BWP switching pattern (i.e., BWP switching type 2), if an existing DCI-based BWP switching indication (i.e., BWP switching type 1) is received, the UE may override the configured BWP switching pattern (i.e., BWP switching type 2) and fall back to the previous operation (i.e., BWP switching type 1). In this case, the UE may not return to BWP switching type 2 and may maintain BWP switching type 1 until a separate configuration and / or indication is received. Alternatively, the UE may maintain the fallback to BWP switching type 1 for a specific period (or a certain number of slots / symbols) and then return to BWP switching type 2.

[0088] [4] A method for applying different configurations to the proposed method based on the discontinuous reception (DRX) configuration

[0089] NR (e.g., Rel-17) standards specify DRX configuration / operation. The features of DRX are used to reduce unnecessary power consumption of UE as follows.

[0090] DRX defines two structures: one for UEs in RRC_IDLE state (referred to as I-DRX), and one for UEs in RRC_CONNECTED state (referred to as C-DRX). These two DRX structures are defined so that the period during which the UE may expect to receive DL signals (e.g., active period or on-duration period) occurs periodically to reduce unnecessary power consumption during other periods. For reference, in the case of C-DRX, the start of the on-duration period occurs periodically. The size of the configurable period (i.e., DRX cycle) can be determined / configured by higher layer signaling such as RRC signaling provided by the BS to the UE.

[0091] In the present disclosure, DRX may refer to C-DRX and / or I-DRX.

[0092] In the present disclosure, a period during which a UE (configured with DRX) may desire to receive a DL signal within a DRX cycle may be expressed as a DRX active time (or On-Duration).

[0093] In the above-mentioned proposed methods (i.e., the methods described in [1] to [2]), when the UE is configured with DRX, the application or configuration may vary between the DRX active time and other time periods. For example, the proposed method may be applied / configured during the DRX active time and not applied / configured during other time periods. Alternatively, the proposed method may not be applied / configured during the DRX active time (i.e., operating in non-NES mode) and may be applied / configured for NES mode operation during other time periods.

[0094] In the above proposed method, when the UE is configured with DRX, different configurations may be applied during the DRX active time and other periods within the DRX cycle. For example, operations related to BWP switching (described in [1]) may be configured separately during the DRX active time and other periods. Alternatively, operations related to BWP switching patterns (described in [2]) may be configured differently during the DRX active time and other periods. Alternatively, the UE may operate in NES mode during the DRX active time and in non-NES mode during other periods. On the other hand, the UE may operate in non-NES mode during the DRX active time and in NES mode during other periods.

[0095] For multiple DRX configurations, the above-proposed method may be applied differently for each DRX configuration. That is, the UE may operate in NES mode for some DRX configurations (or when the UE receives a DRX configuration), and the UE may operate in non-NES mode for other DRX configurations (or when the UE receives other DRX configurations). In this case, one of the multiple DRX configurations (i.e., DRX configuration switch) may be one DRX configuration configured / indicated by RRC signaling (GC-DCI or MAC-CE) among the N DRX configurations provided to the UE via (UE-specific) RRC signaling.

[0096] For example, when the UE operates in a NES BWP (or non-NES BWP) according to DRX configuration #1, if the DRX configuration switches to DRX configuration #2 (due to an indication of DRX configuration switching), the UE may switch to the non-NES BWP (or NES BWP).

[0097] For multiple DRX configurations, the above-mentioned proposed method is applied differently for each DRX configuration. That is, for some DRX configurations (or when DRX configurations are provided), a specific method in the proposed method can be applied / configured, and for other DRX configurations (or when other DRX configurations are provided), different specific methods in the proposed method can be applied / configured.

[0098] The above proposed method may be configured / applied differently for each BWP. That is, for some BWPs (or when a BWP is an active BWP), the UE may operate in NES mode, and for other BWPs (or when other BWPs are active BWPs, or when a BWP operating in NES mode becomes an inactive BWP), the UE may operate in non-NES mode.

[0099] In the above proposed method, the above timer related to the NES mode (or non-NES mode) may be suspended (maintained) or (re)started during the NES mode (or non-NES mode). Alternatively, the timer may be suspended during the DRX active time (or other time period).

[0100] Additionally, for example, during an NES mode (eg, NES duration), the timer may remain paused without being decremented or incremented, and the counting operation may resume once the NES mode (eg, NES duration) ends.

[0101] In addition, the SCS for determining the time slot in which the timer is reduced (for indicating NES mode switching) may be configured based on the smaller value between the SCS of the PDCCH and the SCS of the timer domain (e.g., PDSCH). Alternatively, the SCS for determining the time slot in which the timer is reduced may be configured based on the minimum SCS between the SCS of the PDCCH and the SCS of the PDSCH (SCS in an active or inactive state).

[0102] In addition, when multiple cells are linked to the timer (and related configuration / operation) (which can be pre-configured via RRC signaling), the timer can be configured or operated for each cell group.

[0103] In the above proposed method, when multiple cells are configured for a UE configured with DRX to operate only some specific cells in NES mode (or non-NES mode), the UE may group cells belonging to the same DRX configuration (or DRX group) in advance and configure a timer to operate based on the cell group. The operation of the timer includes incrementing, decrementing, pausing and (re)starting the timer.

[0104] The content of the present disclosure is not limited to being applied only to UL and / or DL ​​signal transmission and reception. For example, the content of the present disclosure can also be used for direct communication between UEs. In this document, the term base station (BS) can be understood as including the concept of relay node and BS. For example, the operation of the BS described in the present disclosure can be performed by a relay node and a BS.

[0105] It is obvious that each example of the proposed method can also be included as an implementation method of the present disclosure, and therefore each example can be regarded as a proposed method. Although the above-mentioned proposed methods can be implemented independently, some of the proposed methods can be combined and implemented. In addition, it can be specified whether the information of the proposed method (or the information of the rules related to the proposed method) is applied to the UE in a predefined signal (e.g., physical layer signaling or higher layer signaling).

[0106] Implementation Example

[0107] Figure 4 is a flowchart of a resource configuration method according to an embodiment of the present disclosure.

[0108] refer to Figure 4 , the signal transmission and reception method according to the embodiment of the present disclosure may be performed by a UE. The method may include: receiving a configuration of a switching pattern (S501); performing BWP switching based on data (S503); and transmitting or receiving data on an active BWP due to the BWP switching (S505). Figure 4 In addition to the operations in, at least one of the operations described in sections [1] to [3] may also be performed.

[0109] For example, referring to section [1], the configuration of the pattern mode is a configuration for the NES mode, which switches the active BWP from the first BWP to the second BWP when certain conditions are met. Conventional BWP switching occurs due to RRC signaling, DCI, inactivity timer, or initialization of random access. When the UE is configured with the NES mode, and when the UE receives the configuration for switching the pattern, if certain conditions are met, BWP switching can be performed even without explicit signaling.

[0110] Specifically, referring to sections [1-2] and [1-3], based on the data to be transmitted or received, the active BWP is switched from the first BWP to the second BWP according to the received and configured switching pattern.

[0111] Specifically, in the embodiment of section [1-2], BWP switching occurs based on the type of data to be sent or received, while in the embodiment of section [1-3], BWP switching occurs based on the amount of data stored in the buffer.

[0112] Referring to the embodiments of sections [1-2], the configuration for the switching pattern may include first information about (i) the type of data to which the switching is to be applied, (ii) the number of time periods in which the first BWP is configured as the active BWP and the length of each time period, and (iii) the number of time periods in which the second BWP is configured as the active BWP and the length of each time period. The data type may refer to data that varies based on a service provided to a user, such as a VoIP service or extended reality (XR) data. Based on the configuration for the switching pattern, the UE may send or receive the type of data indicated by the switching pattern during the time period in which the active BWP is the second BWP. Thereafter, even without separate signaling, the active BWP may be switched from the second BWP to the first BWP once the time period configured by the switching pattern has elapsed.

[0113] In addition, referring to the embodiments of sections [1-3], the configuration for the switching pattern may include second information about: (i) the type of buffer to which the switching is to be applied, (ii) a threshold value of the amount of data required to perform the switching, and (iii) a BWP to be used when the amount of data exceeds a threshold between the first BWP and the second BWP and a BWP to be used when the amount of data is below the threshold. If the amount of data generated exceeds the threshold, the UE may switch the active BWP from the first BWP to the second BWP. While the active BWP is the second BWP, the UE may send or receive data associated with the buffer. Thereafter, even without separate signaling, once the amount of data stored in the buffer is below the threshold configured for the switching pattern, the active BWP may be switched from the second BWP to the first BWP.

[0114] In addition, referring to sections [1-2] and [1-3], a configuration for a switching pattern is received via RRC signaling. The UE may receive an indication for activating or deactivating the switching pattern configuration via MAC CE and / or DCI. Alternatively, the configuration for the switching pattern may include information for multiple switching patterns. In this case, the first information and / or second information for the switching pattern configuration may include as many switching patterns as there are. The UE may receive at least one of the configurations for the switching pattern via MAC CE and / or DCI.

[0115] Referring to sections [1-4], BWP switching according to the switching pattern can be applied only when the first BWP and the second BWP overlap. Specifically, BWP switching according to the switching pattern can be applied only when all or some of the RBs constituting the first BWP overlap with the RBs constituting the second BWP, or when all or some of the RBs constituting the second BWP overlap with the RBs constituting the first BWP.

[0116] Referring to Section [1-7], it may be indicated that switching according to a switching pattern is not performed during a specific time period. For example, if the UE receives a DCI indicating suspension of BWP switching according to a switching pattern during a specific time period, even if the type of data indicated by the switching pattern or the amount of data in the buffer exceeds a threshold during the indicated time period, the active BWP is not switched from the first BWP to the second BWP.

[0117] In addition, referring to another example in section [1-7], if new data or HARQ transmission to be sent or received appears in the currently active BWP, BWP switching according to the switching pattern can be suspended until the transmission or reception of the newly generated data or HARQ transmission is completed.

[0118] In addition to at least one of the operations explained above, one or more operations in section [2] may be combined.

[0119] For example, referring to section [2-3], a method for transitioning between a first BWP switching (BWP switching type 2) based on a switching pattern and a second BWP switching (BWP switching type 1) operating without a switching pattern may be defined and / or configured. The transition between the first BWP switching and the second BWP switching may be performed via MAC CE and / or DCI. The MAC CE and / or DCI may explicitly indicate the transition between the first BWP switching and the second BWP switching. Alternatively, as described in section [2-5], if the MAC CE and / or DCI is intended to trigger the second BWP switching, the UE may ignore the first BWP switching based on the switching pattern and perform the triggered second BWP switching.

[0120] In addition, when the first BWP switch is deactivated and the second BWP switch is activated, the previously configured delay (T_a) may be applied. Alternatively, if the first BWP switch is configured as the default switch type, the second BWP switch may be activated within a specific time (T_b) by a transition between the first BWP switch and the second BWP switch. After the specific time has elapsed, the second BWP switch may be deactivated, and then the first BWP switch may be activated again.

[0121] In addition, referring to sections [2-4], the scheduling for the UE of configuring and / or applying the first BWP switching may be restricted so that the BWP for receiving the DCI and the BWP for sending and / or receiving the data are the same. For example, after the active BWP is switched to the second BWP by the first BWP switching, the UE may receive DCI scheduled data (which may be referred to as the second data to distinguish the data from the data that triggered the switching). The second data is scheduled so that the active BWP becomes the second BWP according to the switching pattern. Specifically, when the PDSCH is scheduled by DCI, the reception position of the PDSCH may be located within the same BWP as the PDCCH carrying the DCI that schedules the PDSCH, so that the time slot offset k0 between the PDCCH and the PDSCH may be limited accordingly. When the PUSCH is scheduled by DCI, the transmission position of the PUSCH may be located within the same BWP as the PDCCH carrying the DCI that schedules the PUSCH, so that the time slot offset k2 between the PDCCH and the PUSCH may be limited accordingly. The embodiment in sections [2-4] does not withhold switching and sending or receiving data as described in sections [1-7], but allows sending or receiving data after two BWP switches, where the active BWP is switched from a first BWP to a second BWP and then switched back to the first BWP before sending or receiving data.

[0122] The operations in sections [1] and [2] can be performed in combination with the operations described in section [3].

[0123] For example, when the UE has multiple DRX configurations, different embodiments may be applied to each DRX configuration. Specifically, when the first DRX is configured, the UE may operate in the NES mode, and when the second DRX is configured, the UE may operate in the non-NES mode.

[0124] In addition to reference Figure 4 In addition to the operations described, refer to Figures 1 to 3 And / or one or more of the operations explained in sections [1] to [3] may be combined and further performed.

[0125] Example of a communication system to which the present disclosure is applied

[0126] The various descriptions, functions, processes, proposals, methods and / or operational flowcharts of the present disclosure described herein may be applied to (but not limited to) various fields requiring wireless communication / connection (e.g., 5G) between devices.

[0127] More specific examples will be described below with reference to the accompanying drawings. In the following drawings / descriptions, unless otherwise specified, similar reference numerals represent the same or corresponding hardware blocks, software blocks or functional blocks.

[0128] Figure 5A communication system 1 applied to the present disclosure is shown.

[0129] Reference Figure 5 , the communication system 1 applied to the present disclosure includes a wireless device, a BS, and a network. The wireless device is a device that performs communication using a radio access technology (RAT) (e.g., 5G NR (or new RAT) or LTE), also referred to as a communication / radio / 5G device. The wireless device may include (but is not limited to) a robot 100a, a vehicle 100b-1 and 100b-2, an extended reality (XR) device 100c, a handheld device 100d, a home appliance 100e, an IoT device 100f, and an artificial intelligence (AI) device / server 400. For example, a vehicle may include a vehicle with a wireless communication function, an autonomous driving vehicle, and a vehicle capable of vehicle-to-vehicle (V2V) communication. Herein, a vehicle may include an unmanned aerial vehicle (UAV) (e.g., a drone). The XR device may include an augmented reality (AR) / virtual reality (VR) / mixed reality (MR) device, and may be implemented in the form of a head-mounted device (HMD), a head-up display (HUD) installed in a vehicle, a television (TV), a smart phone, a computer, a wearable device, a home appliance, a digital signage, a vehicle, a robot, and the like. Handheld devices may include smart phones, smart boards, wearable devices (e.g., smart watches or smart glasses), and computers (e.g., laptop computers). Home appliances may include TVs, refrigerators, washing machines, etc. IoT devices may include sensors, smart meters, etc. For example, a BS and a network may be implemented as wireless devices, and a specific wireless device 200a may operate as a BS / network node for other wireless devices.

[0130] The wireless devices 100a to 100f may be connected to the network 300 via the BS 200. AI technology may be applied to the wireless devices 100a to 100f, and the wireless devices 100a to 100f may be connected to the AI ​​server 400 via the network 300. The network 300 may be configured using a 3G network, a 4G (e.g., LTE) network, or a 5G (e.g., NR) network. Although the wireless devices 100a to 100f may communicate with each other via the BS 200 / network 300, the wireless devices 100a to 100f may perform direct communication (e.g., side link communication) with each other without the intervention of the BS / network. For example, the vehicles 100b-1 and 100b-2 may perform direct communication (e.g., V2V / vehicle-to-everything (V2X) communication). IoT devices (e.g., sensors) may perform direct communication with other IoT devices (e.g., sensors) or other wireless devices 100a to 100f.

[0131] Wireless communication / connection 150a, 150b, and 150c may be established between wireless devices 100a to 100f / BS 200 and between BSs 200. Herein, wireless communication / connection may be established through various RATs (e.g., 5G NR) such as UL / DL communication 150a, sidelink communication 150b (or D2D communication), or inter-BS communication (e.g., relay or integrated access backhaul (IAB)). Wireless signals may be sent and received between wireless devices, between wireless devices and BSs, and between BSs through wireless communication / connection 150a, 150b, and 150c. For example, signals may be sent and received via various physical channels through wireless communication / connection 150a, 150b, and 150c. To this end, at least a portion of various configuration information for configuring a process for sending / receiving wireless signals, various signal processing processes (e.g., channel coding / decoding, modulation / demodulation, and resource mapping / demapping), and a resource allocation process may be performed based on various proposals of the present disclosure.

[0132] Example of wireless device to which the present disclosure is applied

[0133] Figure 6 A wireless device suitable for use with the present disclosure is shown.

[0134] Reference Figure 6 , the first wireless device 100 and the second wireless device 200 may transmit wireless signals through various RATs (eg, LTE and NR). {The first wireless device 100 and the second wireless device 200} may correspond to Figure 5 {wireless device 100x and BS 200} and / or {wireless device 100x and wireless device 100x}.

[0135] The first wireless device 100 may include one or more processors 102 and one or more memories 104, and also include one or more transceivers 106 and / or one or more antennas 108. The processor 102 may control the memory 104 and / or the transceiver 106, and may be configured to implement the description, functions, processes, proposals, methods, and / or operation flowcharts disclosed in this document. For example, the processor 102 may process the information in the memory 104 to generate first information / signals, and then transmit a wireless signal including the first information / signals through the transceiver 106. The processor 102 may receive a wireless signal including second information / signals through the transceiver 106, and then store information obtained by processing the second information / signals in the memory 104. The memory 104 may be connected to the processor 102, and may store various information related to the operation of the processor 102. For example, the memory 104 may store software codes including instructions for executing all or part of the processing controlled by the processor 102 or for executing the description, functions, processes, proposals, methods, and / or operation flowcharts disclosed in this document. The processor 102 and the memory 104 may be part of a communication modem / circuit / chip designed to implement a RAT (e.g., LTE or NR). The transceiver 106 may be connected to the processor 102 and transmit and / or receive wireless signals through one or more antennas 108. Each transceiver 106 may include a transmitter and / or a receiver. The transceiver 106 may be used interchangeably with a radio frequency (RF) unit. In the present disclosure, a wireless device may be a communication modem / circuit / chip.

[0136] The second wireless device 200 may include one or more processors 202 and one or more memories 204, and also include one or more transceivers 206 and / or one or more antennas 208. The processor 202 may control the memory 204 and / or the transceiver 206, and may be configured to implement the description, functions, processes, proposals, methods, and / or operation flowcharts disclosed in this document. For example, the processor 202 may process the information in the memory 204 to generate third information / signals, and then transmit a wireless signal including the third information / signals through the transceiver 206. The processor 202 may receive a wireless signal including fourth information / signals through the transceiver 106, and then store information obtained by processing the fourth information / signals in the memory 204. The memory 204 may be connected to the processor 202 and store various information related to the operation of the processor 202. For example, the memory 204 may store software codes including instructions for executing all or part of the processing controlled by the processor 202 or for executing the description, functions, processes, proposals, methods, and / or operation flowcharts disclosed in this document. The processor 202 and the memory 204 may be part of a communication modem / circuit / chip designed to implement a RAT (e.g., LTE or NR). The transceiver 206 may be connected to the processor 202 and transmit and / or receive wireless signals through one or more antennas 208. Each transceiver 206 may include a transmitter and / or a receiver. The transceiver 206 may be used interchangeably with an RF unit. In the present disclosure, a wireless device may be a communication modem / circuit / chip.

[0137] Now, the hardware elements of the wireless devices 100 and 200 will be described in more detail. One or more protocol layers may be implemented by (but not limited to) one or more processors 102 and 202. For example, one or more processors 102 and 202 may implement one or more layers (e.g., functional layers such as physical (PHY), medium access control (MAC), radio link control (RLC), packet data convergence protocol (PDCP), RRC, and service data adaptation protocol (SDAP)). One or more processors 102 and 202 may generate one or more protocol data units (PDUs) and / or one or more service data units (SDUs) according to the descriptions, functions, processes, proposals, methods, and / or operational flowcharts disclosed in this document. One or more processors 102 and 202 may generate messages, control information, data, or information according to the descriptions, functions, processes, proposals, methods, and / or operational flowcharts disclosed in this document, and provide these messages, control information, data, or information to one or more transceivers 106 and 206. One or more processors 102 and 202 may generate a signal (e.g., a baseband signal) including a PDU, SDU, message, control information, data, or information according to the description, functions, procedures, proposals, methods, and / or operational flowcharts disclosed in this document, and provide the generated signal to one or more transceivers 106 and 206. One or more processors 102 and 202 may receive a signal (e.g., a baseband signal) from one or more transceivers 106 and 206 and obtain the PDU, SDU, message, control information, data, or information according to the description, functions, procedures, proposals, methods, and / or operational flowcharts disclosed in this document.

[0138] One or more processors 102 and 202 may be referred to as controllers, microcontrollers, microprocessors, or microcomputers. One or more processors 102 and 202 may be implemented by hardware, firmware, software, or a combination thereof. For example, one or more application specific integrated circuits (ASICs), one or more digital signal processors (DSPs), one or more digital signal processing devices (DSPDs), one or more programmable logic devices (PLDs), or one or more field programmable gate arrays (FPGAs) may be included in one or more processors 102 and 202. The descriptions, functions, processes, proposals, methods, and / or operational flowcharts disclosed in this document may be implemented using firmware or software, and the firmware or software may be configured to include modules, processes, or functions. Firmware or software configured to execute the descriptions, functions, processes, proposals, methods, and / or operational flowcharts disclosed in this document may be included in one or more processors 102 and 202 or may be stored in one or more memories 104 and 204 and driven by one or more processors 102 and 202. The descriptions, functions, processes, proposals, methods and / or operational flow charts disclosed in this document may be implemented in the form of codes, instructions and / or instruction sets using firmware or software.

[0139] One or more memories 104 and 204 may be connected to one or more processors 102 and 202 and store various types of data, signals, messages, information, programs, codes, instructions and / or commands. One or more memories 104 and 204 may be configured to include read-only memory (ROM), random access memory (RAM), electrically erasable programmable read-only memory (EPROM), flash memory, hard drive, registers, cache memory, computer-readable storage media and / or combinations thereof. One or more memories 104 and 204 may be located inside and / or outside of one or more processors 102 and 202. One or more memories 104 and 204 may be connected to one or more processors 102 and 202 via various technologies such as wired or wireless connections.

[0140] One or more transceivers 106 and 206 may send user data, control information and / or wireless signals / channels mentioned in the method and / or operation flow chart of this document to one or more other devices. One or more transceivers 106 and 206 may receive user data, control information and / or wireless signals / channels mentioned in the description, function, process, proposal, method and / or operation flow chart disclosed in this document from one or more other devices. For example, one or more transceivers 106 and 206 may be connected to one or more processors 102 and 202 and send and receive wireless signals. For example, one or more processors 102 and 202 may perform control so that one or more transceivers 106 and 206 may send user data, control information or wireless signals to one or more other devices. One or more processors 102 and 202 may perform control so that one or more transceivers 106 and 206 may receive user data, control information or wireless signals from one or more other devices. One or more transceivers 106 and 206 may be connected to one or more antennas 108 and 208, and one or more transceivers 106 and 206 may be configured to send and receive user data, control information, and / or radio signals / channels mentioned in the description, functions, processes, proposals, methods, and / or operation flow charts disclosed in this document through one or more antennas 108 and 208. In this document, one or more antennas may be multiple physical antennas or multiple logical antennas (e.g., antenna ports). One or more transceivers 106 and 206 may convert the received wireless signals / channels from RF band signals to baseband signals so as to process the received user data, control information, and wireless signals / channels using one or more processors 102 and 202. One or more transceivers 106 and 206 may convert the user data, control information, and wireless signals / channels processed using one or more processors 102 and 202 from baseband signals to RF band signals. To this end, one or more of the transceivers 106 and 206 may include (analog) oscillators and / or filters.

[0141] Example of use of wireless device to which the present disclosure is applied

[0142] Figure 7 Another example of a wireless device applicable to the present disclosure is shown. The wireless device can be based on the use case / service (refer to Figure 5 ) are implemented in various forms.

[0143] Reference Figure 7 , the wireless devices 100 and 200 may correspond to Figure 6The wireless devices 100 and 200 may be configured to include various elements, components, units / parts and / or modules. For example, each of the wireless devices 100 and 200 may include a communication unit 110, a control unit 120, a memory unit 130 and an additional component 140. The communication unit 110 may include a communication circuit 112 and a transceiver 114. For example, the communication circuit 112 may include Figure 6 The one or more processors 102 and 202 and / or the one or more memories 104 and 204 of the present invention. For example, the transceiver 114 may include Figure 6 The control unit 120 is electrically connected to the communication unit 110, the memory 130, and the additional components 140, and provides overall control of the wireless device. For example, the control unit 120 may control the electrical / mechanical operation of the wireless device based on the program / code / instruction / information stored in the memory unit 130. The control unit 120 may transmit information stored in the memory unit 130 to the outside (e.g., other communication devices) via the communication unit 110 through a wireless / wired interface, or store information received from the outside (e.g., other communication devices) via the communication unit 110 in the memory unit 130 through a wireless / wired interface.

[0144] The additional component 140 may be configured in various ways depending on the type of wireless device. For example, the additional component 140 may include at least one of a power supply unit / battery, an input / output (I / O) unit, a drive unit, and a computing unit. The wireless device may be configured in (but not limited to) a robot ( Figure 5 100a), vehicles ( Figure 5 100b-1 and 100b-2), XR devices ( Figure 5 100c), handheld device ( Figure 5 100d), household appliances ( Figure 5 100e), IoT devices ( Figure 5 100f), digital broadcast terminals, holographic devices, public safety devices, MTC devices, medical devices, fintech devices (or financial devices), security devices, climate / environmental devices, AI servers / devices ( Figure 5 400), BS ( Figure 5 200), network node, etc. Depending on the use case / service, the wireless device can be mobile or fixed.

[0145] exist Figure 7In the wireless devices 100 and 200, various elements, components, units / parts and / or modules in the wireless devices 100 and 200 may all be connected to each other through a wired interface, or at least a part thereof may be wirelessly connected through the communication unit 110. For example, in each of the wireless devices 100 and 200, the control unit 120 and the communication unit 110 may be wired, and the control unit 120 and the first unit (e.g., 130 and 140) may be wirelessly connected through the communication unit 110. The various elements, components, units / parts and / or modules in the wireless devices 100 and 200 may also include one or more elements. For example, the control unit 120 may be configured using a collection of one or more processors. For example, the control unit 120 may be configured using a collection of a communication control processor, an application processor, an electronic control unit (ECU), a graphics processing unit and a memory control processor. In another example, the memory 130 may be configured using RAM, dynamic RAM (DRAM), ROM, flash memory, volatile memory, non-volatile memory and / or a combination thereof.

[0146] Examples of vehicles or autonomous driving vehicles to which the present disclosure is applied

[0147] Figure 8 A vehicle or an autonomous vehicle applied to the present disclosure is shown. The vehicle or the autonomous vehicle may be implemented as a mobile robot, a car, a train, a manned / unmanned aerial vehicle (AV), a ship, etc.

[0148] Reference Figure 8 The vehicle or autonomous driving vehicle 100 may include an antenna unit 108, a communication unit 110, a control unit 120, a drive unit 140a, a power supply unit 140b, a sensor unit 140c, and an autonomous driving unit 140d. The antenna unit 108 may be configured as a part of the communication unit 110. Blocks 110 / 130 / 140a to 140d correspond to Figure 7 Block 110 / 130 / 140.

[0149] The communication unit 110 may send and receive signals (e.g., data and control signals) to and from external devices such as other vehicles, BSs (e.g., gNBs and roadside units), and servers. The control unit 120 may perform various operations by controlling elements of the vehicle or autonomous driving vehicle 100. The control unit 120 may include an ECU. The drive unit 140a may enable the vehicle or autonomous driving vehicle 100 to travel on a road. The drive unit 140a may include an engine, a motor, a power system, wheels, brakes, a steering device, etc. The power supply unit 140b may supply power to the vehicle or autonomous driving vehicle 100 and include a wired / wireless charging circuit, a battery, etc. The sensor unit 140c may acquire information about the vehicle status, surrounding environment information, user information, etc. The sensor unit 140c may include an inertial measurement unit (IMU) sensor, a collision sensor, a wheel sensor, a speed sensor, a slope sensor, a weight sensor, a heading sensor, a position module, a vehicle forward / reverse sensor, a battery sensor, a fuel sensor, a tire sensor, a steering sensor, a temperature sensor, a humidity sensor, an ultrasonic sensor, a lighting sensor, a pedal position sensor, etc. The autonomous driving unit 140d may implement a technology for maintaining a lane in which the vehicle is traveling, a technology for automatically adjusting a speed (e.g., adaptive cruise control), a technology for autonomously traveling along a determined path, a technology for traveling by automatically configuring a route if a destination is set, and the like.

[0150] For example, the communication unit 110 may receive map data, traffic information data, etc. from an external server. The autonomous driving unit 140d may generate an autonomous driving route and a driving plan from the obtained data. The control unit 120 may control the drive unit 140a so that the vehicle or the autonomous driving vehicle 100 may move along the autonomous driving route according to the driving plan (e.g., speed / direction control). During autonomous driving, the communication unit 110 may aperiodically / periodically obtain the latest traffic information data from the external server and obtain surrounding traffic information data from neighboring vehicles. During autonomous driving, the sensor unit 140c may obtain information about the vehicle state and / or surrounding environment information. The autonomous driving unit 140d may update the autonomous driving route and driving plan based on the newly obtained data / information. The communication unit 110 may transmit information about the vehicle position, autonomous driving route, and / or driving plan to an external server. The external server may predict traffic information data using AI technology based on information collected from the vehicle or autonomous driving vehicle, and provide the predicted traffic information data to the vehicle or autonomous driving vehicle.

[0151] Those skilled in the art will appreciate that the present disclosure may be implemented in other specific ways than those described herein without departing from the spirit and essential characteristics of the present disclosure. Therefore, the above embodiments are to be interpreted in all respects as illustrative and not restrictive. The scope of the present disclosure should be determined by the appended claims and their legal equivalents (rather than the above description), and all changes falling within the meaning and equivalent scope of the appended claims are intended to be covered therein.

[0152] Industrial Applicability

[0153] As described above, the present disclosure is applicable to various wireless communication systems.

Claims

1. A method for transmitting and receiving a signal by a user equipment (UE) in a wireless communication system, the method comprising: receiving a configuration for a switching pattern between a first bandwidth part (BWP) and a second BWP for a network energy saving (NES) mode; switching the active BWP from the first BWP to the second BWP according to the switching pattern based on data to be transmitted or received; as well as The data is sent or received in the second BWP.

2. The method according to claim 1, wherein: Based on the type of the data, the active BWP is switched from the first BWP to the second BWP.

3. The method according to claim 1, wherein: The active BWP is switched from the first BWP to the second BWP based on an amount of data stored in a buffer.

4. The method according to claim 2, wherein: The configuration includes information about: (i) the type of data to which the switching is to be applied; (ii) the number of time periods during which the first BWP is configured as the active BWP and the length of each time period; as well as (iii) wherein the second BWP is configured to be the number of time periods of the active BWP and the length of each time period.

5. The method according to claim 3, wherein: The configuration includes information about: (i) the type of buffer to which the switching is to be applied; (ii) a threshold value of the amount of data required to perform the switching; as well as (iii) a BWP to be used based on the data amount exceeding the threshold between the first BWP and the second BWP and a BWP to be used based on the data amount being below the threshold.

6. The method according to claim 1, wherein: The configuration includes information about a plurality of switching patterns, and Therein, a configuration is indicated by a medium access control (MAC) control element (CE) or downlink control information (DCI).

7. The method according to claim 1, wherein: receiving the configuration via radio resource control (RRC) signaling, and The configuration is activated or deactivated via a medium access control (MAC) control element (CE) or downlink control information (DCI).

8. The method according to claim 1, wherein: All or some of the resource blocks (RBs) included in the first BWP overlap with the RBs included in the second BWP, or All or some of the RBs included in the second BWP overlap with the RBs included in the first BWP.

9. The method according to claim 1, further comprising: receiving downlink control information (DCI) indicating suspension of said BWP switching according to said switching pattern within a predetermined time period, Wherein, during the predetermined time period, the active BWP does not switch from the first BWP to the second BWP based on data to be transmitted or received.

10. The method according to claim 1, wherein: Based on the occurrence of second data or hybrid automatic repeat request (HARQ) information after the active BWP is switched to the second BWP, switching of the active BWP according to the switching pattern is suspended until transmission or reception of the second data or HARQ information is completed.

11. The method according to claim 1, wherein: deactivating the first BWP switching according to the switching pattern via a medium access control (MAC) control element (CE) or downlink control information (DCI), and Therein, a second BWP switch operating without the switching pattern is activated.

12. The method according to claim 11, wherein: Based on a lapse of a predetermined time after activating the second switch, the first BWP switch is deactivated, and the first BWP switch is reactivated.

13. The method according to claim 1, further comprising: receiving a DCI for scheduling second data after the active BWP is switched to the second BWP, Wherein, according to the switching pattern, the second data is scheduled to be sent or received during a time period during which the active BWP is the second BWP.

14. The method according to claim 1, wherein: Based on a first discontinuous reception (DRX) being configured, the UE operates in the NES mode, and Wherein, based on the second DRX being configured, the UE operates in a non-NES mode.

15. A user equipment (UE) configured to configure radio resources in a wireless communication system, the UE comprising: at least one transceiver; at least one processor; as well as at least one memory, the at least one memory being operably connected to the at least one processor and storing instructions that, when executed, cause the at least one processor to perform specific operations, the specific operations comprising: receiving a configuration for a switching pattern between a first bandwidth part (BWP) and a second BWP for a network energy saving (NES) mode; switching the active BWP from the first BWP to the second BWP according to the switching pattern based on data to be transmitted or received; and The data is sent or received in the second BWP.

16. An apparatus for a user equipment (UE), the apparatus comprising: at least one processor; as well as at least one computer memory operably connected to the at least one processor and configured to, when executed, cause the at least one processor to perform operations comprising: receiving a configuration for a switching pattern between a first bandwidth part (BWP) and a second BWP for a network energy saving (NES) mode; switching the active BWP from the first BWP to the second BWP according to the switching pattern based on data to be transmitted or received; and The data is sent or received in the second BWP.

17. A computer-readable non-volatile storage medium comprising at least one computer program, the computer program being configured to cause a user equipment (UE) having at least one processor to perform operations comprising: receiving a configuration for a switching pattern between a first bandwidth part (BWP) and a second BWP for a network energy saving (NES) mode; switching the active BWP from the first BWP to the second BWP according to the switching pattern based on data to be transmitted or received; as well as The data is sent or received in the second BWP.

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