Terminal, wireless communication method, and base station
By optimizing the configuration and management of sensing resources in wireless communication systems, the terminal and base station enhance sensing performance, addressing the issue of degraded quality in sensing and communication settings.
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2024-09-05
- Publication Date
- 2026-03-12
AI Technical Summary
The settings for transmitting and receiving sensing reference signals in future wireless communication systems are not fully considered, leading to a risk of degraded sensing and communication quality.
A terminal and base station are designed with a receiving unit to receive configuration information for multiple sensing resources in a sensing burst and a control unit to manage these resources based on the configuration, employing various resource patterns and muting/addition methods to optimize sensing performance.
This approach improves wireless sensing performance by reducing overhead and enhancing accuracy, latency, and capacity in integrated sensing and communication systems.
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Figure JP2024031937_12032026_PF_FP_ABST
Abstract
Description
Terminal, wireless communication method and base station
[0001] The present disclosure relates to a terminal, a wireless communication method, and a base station in a next-generation mobile communication system.
[0002] Long Term Evolution (LTE) has been specified for the Universal Mobile Telecommunications System (UMTS) network with the aim of achieving higher data rates and lower latency (Non-Patent Document 1). Also, LTE-Advanced (3GPP Rel. 10-14) has been specified with the aim of achieving higher capacity and more advanced features than LTE (Third Generation Partnership Project (3GPP (registered trademark)) Release (Rel.) 8, 9).
[0003] Successor systems to LTE (e.g., 5th generation mobile communication system (5G), 5G+ (plus), 6th generation mobile communication system (6G), New Radio (NR), 3GPP Rel. 15 or later, etc.) are also being considered.
[0004] 3GPP TS 36.300 V8.12.0 “Evolved Universal Terrestrial Radio Access (E-UTRA) and Evolved Universal Terrestrial Radio Access Network (E-UTRAN); Overall description; Stage 2 (Release 8)”, April 2010
[0005] In future wireless communication systems, wireless sensing is being considered to detect, estimate, track, and so on targets.
[0006] However, the settings for transmitting / receiving / measuring a sensing reference signal (RS) using a sensing burst (sensing RS burst) have not been fully considered. If these settings are not clear, there is a risk that the sensing quality / communication quality will be degraded.
[0007] Therefore, one object of the present disclosure is to provide a terminal, a wireless communication method, and a base station that improve wireless sensing performance.
[0008] A terminal according to one aspect of the present disclosure is characterized by having a receiving unit that receives configuration information regarding the time of multiple sensing resources in one sensing burst, and a control unit that controls the transmission of the sensing resources based on the configuration information.
[0009] According to one aspect of the present disclosure, it is possible to improve the performance of wireless sensing.
[0010] FIGS. 1A and 1B show an example of a scenario of monostatic sensing at a BS or a UE. FIGS. 2A and 2B show an example of a scenario of bistatic sensing between BSs or between UEs. FIGS. 3A and 3B show an example of a scenario of bistatic sensing between BSs or between UEs. FIG. 4 shows an example of a table showing a resource pattern according to the 0th embodiment. FIGS. 5A to 5C show an example of an arrangement of sensing resources within one sensing burst according to the 0th embodiment. FIG. 6A shows an example in which both the duration and resource interval of one sensing resource are set. FIG. 6B shows an example in which the resource interval is set. FIG. 7 shows an example 1 of a sensing burst with a uniform resource pattern according to the first embodiment. FIG. 8 shows an example 2 of a sensing burst with a uniform resource pattern according to the first embodiment. FIG. 9 shows an example 3 of a sensing burst with a uniform resource pattern according to the first embodiment. FIG. 10 shows an example of generating non-uniform resources using a muting pattern according to Method 1-1. FIG. 11 is a diagram showing an example of generating uneven resources by adding a pattern in method 1-2. FIG. 12 is a diagram showing an example of a mute pattern table in option 1-1. FIG. 13 is a diagram showing an example of a mute pattern in option 1-2. FIG. 14 is an example of a table showing an addition pattern in option 2-1 of embodiment 2-1. FIG. 15 is a diagram showing an example of an addition pattern in option 2-2 of embodiment 2-1. FIG. 16A is a diagram showing a resource pattern before muting / addition in option 3-1 of embodiment 2-1. FIG. 16B is a diagram showing an example of muting / addition in option 3-1-1 of embodiment 2-1. FIG. 16C is a diagram showing an example of muting / addition in option 3-1-2 of embodiment 2-1. FIG. 17A is a diagram showing a resource pattern before muting / addition in option 3-2 of embodiment 2-1. FIG. 17B is a diagram showing an example of a resource pattern after muting in option 3-2 of embodiment 2-1. FIG. 17C is a diagram showing an example of a resource pattern after addition in option 3-2 of embodiment 2-1.FIG. 18 is a diagram showing an example table of muting / adding patterns for different lengths / densities in setting example 2. FIG. 19 is a diagram showing example parameters related to mutually prime resource patterns in embodiment 2-3. FIG. 20 is a diagram showing an example of Case 4 in embodiment 2-3. FIG. 21 is a diagram showing an example of resource allocation in embodiment 2-3-1. FIG. 22 is a diagram showing an example of resource allocation using a scale factor S. FIG. 23 is a diagram showing an example of a schematic configuration of a wireless communication system according to an embodiment. FIG. 24 is a diagram showing an example of a configuration of a base station according to an embodiment. FIG. 25 is a diagram showing an example of a configuration of a user terminal according to an embodiment. FIG. 26 is a diagram showing an example of the hardware configuration of a base station and a user terminal according to an embodiment. FIG. 27 is a diagram showing an example of a vehicle according to an embodiment.
[0011] (ISAC) The motivation for integrated sensing and communications (ISAC) is to achieve high sensing performance and new / extended services by using various frequencies and cellular network equipment, and to optimize network parameters by analyzing real-time sensing data. Use cases and possible requirements for extending 5G systems to provide sensing services to address different target industries / applications are considered, and some use cases may also include non-3GPP type (non-wireless communication type) sensors (e.g., radar, camera).
[0012] For example, use case 1 is sensing for tourist destination traffic management. For example, use case 2 is intruder detection in a smart home environment.
[0013] ISAC considers sensing-assisted communication and communication-assisted sensing. Sensing-assisted communication includes sensing-assisted beam management and sensing-assisted resource allocation. Communication-assisted sensing includes network sensing and coordinated sensing. To achieve these, waveforms, beamforming, artificial intelligence (AI) / deep learning (DL) radio access technology (RAT), frame structure, and reference signals are considered. Furthermore, shared spectrum, hardware, and algorithms for ISAC are considered, including higher frequency bands, larger antenna arrays, and similar signal processing algorithms for communication and sensing.
[0014] In ISAC, the challenges are unified waveforms that simultaneously meet the requirements of communication (e.g., OFDM signals) and sensing (e.g., chirp signals), ISAC beamforming that simultaneously realizes communication (e.g., transmit signals, receive signals) and sensing (e.g., echo signals, transmit signals, reflected signals) through beamforming, and interference suppression between them, and CSI mining by AI that uses AI / DL networks to extract sensing information from channel information for communication (e.g., UL transmit signals) and radar (e.g., DL radar signals).
[0015] Three types of radar and communication systems have been considered based on whether the communication and radar (sensing) systems share hardware / bandwidth. The three types are independent radar and communication systems (independent systems), joint radar and communication systems (joint systems), and integrated radar and communication systems (integrated systems). In the following, we focus on ISAC systems, in which hardware and bandwidth are shared between the radar and communication systems.
[0016] (Wireless Sensing) Wireless sensing based on communication radio waves is a key enabler for the vision of 6G cyber physical systems (CPS). ISAC can be realized by 5G-advanced (A) and 6G with the development of higher frequencies and wider bandwidths. The design of ISAC waveforms and sensing reference signals (RS) is a key technology for realizing wireless sensing.
[0017] Use cases for ISAC include the metaverse, high altitude platform station (HAPS) sensing, and crowd estimation. HAPS can be an aircraft with an altitude of about 20 km and can be used in non-terrestrial networks (NTNs).
[0018] HAPS sensing realizes ultra-remote distance sensing using echo signals based on the support of communication functions. Considering that the sensing distance depends on the strength of the echo signal, a sensing form or sensing sequence with an extremely low peak-to-average power ratio (PAPR) is required to improve the SNR of the echo signal under a given transmission power.
[0019] (Sensing Mode / Method) Conventional communication systems include communication between one BS (base station, gNB) and one UE, and joint transmission between multiple BSs and one UE. Conventional radar systems include monostatic radars in which one radar transmits a radar signal and receives echoes from a sensing target, and bistatic / multistatic radars in which one radar transmits a radar signal and one or more radars receive echoes from a sensing target.
[0020] Independent systems use separate hardware and separate frequency bands for radar and communications, which may be co-located or in separate locations.
[0021] A joint system uses the same hardware and separate frequency bands for radar and communications.
[0022] A unified system uses the same hardware and the same frequency bands for radar and communications.
[0023] Sensing in the ISAC system can be achieved by any of the following sensing methods: ◇Monostatic sensing: Monostatic sensing using the idea of monostatic radar. This sensing method requires one BS or one UE, and sensing is performed using echo signals. In this sensing method, there is no BS-to-BS, UE-to-UE, or BS-to-UE cooperation. A use case of this sensing method is, for example, imaging using terahertz. ◇Bistatic sensing / multistatic sensing: Bistatic / multistatic sensing using bistatic radar / multistatic radar. This sensing method requires two or more BSs or two or more UEs, and sensing is performed using reflected signals. A use case of this sensing method is, for example, positioning. ◇UE-assisted sensing: UE-assisted sensing using the idea of NR positioning. This sensing method requires a BS and a UE, and sensing is performed via communication (UL / DL) signals. This sensing method operates within the existing 5G NR framework. This sensing method requires a UE, and both line-of-sight (LOS) and non-line-of-sight (NLOS) sensing require high computational complexity. A use case for this sensing method is, for example, breath monitoring.
[0024] [Monostatic Sensing] This sensing method includes BS (gNB) monostatic sensing (Figure 1A) and UE monostatic sensing (Figure 1B).
[0025] A scenario suitable for monostatic sensing has the following characteristics: The sensing target is in the vicinity of the sensing BS / UE and high or medium SNR of the echo signal is required. The target may not have communication capabilities.
[0026] The capacity requirements for monostatic sensing have the following characteristics: High capacity is required due to full duplex at the BS or UE.
[0027] The performance of monostatic sensing has the following characteristics: ◇High accuracy due to no quantization. ◇Accuracy is related to the SNR of the echo signal. ◇Low latency.
[0028] [Bistatic Sensing / Multistatic Sensing] This sensing method includes bistatic sensing from BS to BS (gNB-gNB, BS-BS, BS1-BS2, gNB-to-gNB, gNB1-to-gNB2) (Figure 2A), bistatic sensing from UE to BS (UE-gNB, UE-BS, UE-to-gNB) (Figure 2B), bistatic sensing from BS to UE (gNB-UE, BS-UE, gNB-to-UE) (Figure 3A), and bistatic sensing from UE to UE (UE-UE, UE1-UE2, UE-to-UE, UE1-to-UE2) (Figure 3B).
[0029] Scenarios suitable for BS-BS bistatic sensing have the following characteristics: ◇Tight synchronization and coordination between BSs is required, and scheduling coordination among multiple BSs is required. ◇The target may not have communication capabilities.
[0030] The capacity requirements for BS-BS bistatic sensing have the following characteristics: ◇Low capacity can be realized due to half duplex. ◇High capacity is required due to synchronization between BSs.
[0031] The performance of BS-BS bistatic sensing has the following characteristics: ◇High accuracy due to no quantization ◇Accuracy is related to the SNR of the echo signal ◇Medium latency.
[0032] Scenarios suitable for UE-BS, BS-UE and UE-UE bistatic sensing have the following characteristics: ◇ It requires communicating UEs to be around the target.
[0033] The capacity requirements for UE-BS bistatic sensing have the following characteristics: ◇It can be realized even with low capacity due to half duplex. ◇High UE positioning accuracy is required.
[0034] The capacity requirements for BS-UE bistatic sensing and UE-UE bistatic sensing have the following characteristics: ◇Low capacity can be realized due to half duplex. ◇UE needs sufficient computational resources and high accuracy of reflected signal detection. ◇High UE positioning accuracy is required.
[0035] The performance of UE-BS bistatic sensing, BS-UE bistatic sensing, and UE-UE bistatic sensing has the following characteristics: ◇ Medium accuracy due to quantization of feedback values ◇ Accuracy is related to the configured resources and UE location ◇ Long latency
[0036] In each of the embodiments described below, the following scenarios and assumptions may be used: ◇In ISAC scenarios, communication and sensing functions are required. ◇For low complexity and backward compatibility, TDD (half duplex) may be assumed instead of full duplex at BS and UE.
[0037] In a TDD-based ISAC system, sensing signals and reflected / echo signals are preferably transmitted and received in different time resources. For example, in BS-based sensing, including monostatic BS sensing and bistatic BS1-to-BS2 sensing, sensing signals are preferably transmitted in DL time resources, and reflected / echo signals are preferably received in UL time resources. For example, in UE-based sensing, including monostatic UE sensing and bistatic UE1-to-UE2 sensing, sensing signals are preferably transmitted in UL time resources, and reflected / echo signals are preferably received in DL time resources. In bistatic BS-to-UE sensing, DL time resources are preferably used for sensing. In bistatic UE-to-DL sensing, UL time resources are preferably used for sensing.
[0038] (Relationship Between RS Pattern / Resource and Sensing KPI) The sensing performance of RS in an OFDM system will be described.
[0039] The resolution and accuracy of the range is determined by the occupied bandwidth, which is related to the carrier frequency.
[0040] The velocity resolution and accuracy are determined by the coherent pulse interval (CPI) and wavelength. The velocity should be constant over the period of the CPI. The wavelength is related to the carrier frequency.
[0041] The maximum unambiguous distance / velocity is related to the RS pattern in the OFDM system and may be designed based on the requirements.
[0042] The RS pattern in the frequency domain may affect the maximum unambiguous distance, and the RS resource in the time domain may affect the rate resolution and the maximum unambiguous rate (which indicates the maximum supported sensing rate).
[0043] (Analysis) In future wireless communication systems, wireless sensing is being considered for target detection, estimation, tracking, etc.
[0044] However, the settings for transmitting / receiving / measuring a sensing reference signal (RS) using a sensing burst (sensing RS burst) have not been fully considered. If these settings are not clear, there is a risk that the sensing quality / communication quality will be degraded.
[0045] For example, velocity estimation is performed by sensing targets. Velocity estimation requires observation and measurement of the coherent pulse interval (CPI). For example, the pulse repetition time (PRT) affects the maximum unambiguous velocity. Therefore, signal bursts with a regular / uniform resource pattern in the time domain are being considered.
[0046] However, when a regular / uniform sensing resource pattern is used, the sensing overhead increases linearly in proportion to the maximum unambiguous rate. Therefore, to achieve low overhead and good maximum unambiguous rate / rate resolution, it is possible to apply an irregular / non-uniform resource pattern design in the time domain. However, there has been insufficient research into how to design sensing signal resources in the time domain to support rate estimation. There has been insufficient research into how to realize irregular / non-uniform sensing signals in ISAC systems, taking into account the trade-off between rate estimation performance and overhead.
[0047] Therefore, the present inventors have conceived a method for improving the performance of wireless sensing.
[0048] Hereinafter, embodiments according to the present disclosure will be described in detail with reference to the drawings. Wireless communication methods according to the embodiments may be applied independently or in combination.
[0049] (Various Reinterpretations) In the present disclosure, a word enclosed in "( )" in a sentence may indicate an explanation of the word immediately preceding it (for example, an explanation of spelling), a paraphrase, a specific example, a supplementary explanation, etc. Furthermore, in the present disclosure, a word enclosed in "[ ]" in a sentence may be interpreted including the word in the meaning of the entire sentence, or may be interpreted excluding (ignoring) the word in the meaning of the entire sentence. Note that "( )" and "[ ]" may also be used for purposes / meanings other than those mentioned above.
[0050] In the present disclosure, "A / B" and "at least one of A and B" may be interpreted interchangeably. Also, in the present disclosure, "A / B / C" may mean "at least one of A, B, and C."
[0051] In the present disclosure, terms such as notify, activate, deactivate, indicate (or indicate), select, configure, update, and determine may be read interchangeably. In the present disclosure, terms such as support, control, controllable, operate, and operate may be read interchangeably.
[0052] In the present disclosure, Radio Resource Control (RRC), RRC parameters, RRC messages, higher layer parameters, fields, information elements (IEs), settings, etc. may be interchangeable. In the present disclosure, Medium Access Control (MAC) control elements (CEs), update commands, activation / deactivation commands, etc. may be interchangeable.
[0053] In the present disclosure, the higher layer signaling may be, for example, any one of Radio Resource Control (RRC) signaling, Medium Access Control (MAC) signaling, broadcast information, other messages (e.g., messages from the core network such as positioning protocol (e.g., NR Positioning Protocol A (NRPPa) / LTE Positioning Protocol (LPP)) messages), or a combination thereof.
[0054] In the present disclosure, MAC signaling may use, for example, a MAC Control Element (MAC CE), a MAC Protocol Data Unit (PDU), etc. Broadcast information may be, for example, a Master Information Block (MIB), a System Information Block (SIB), Remaining Minimum System Information (RMSI), Other System Information (OSI), etc.
[0055] In the present disclosure, physical layer signaling may be, for example, Downlink Control Information (DCI), Uplink Control Information (UCI), and the like.
[0056] In the present disclosure, the terms burst, group, list, etc. may be interchangeable. The terms burst, RS burst, sensing burst, sensing RS burst, sensing RS, sensing resource, sensing resource pattern, and resource pattern may be interchangeable.
[0057] Supporting / configuring / instructing, receiving configuration information / instruction information, and reporting / sending capability information indicating support may be interchangeable. Supporting / configuring / instructing may mean that the UE is supported / configured / instructed by the NW (base station). Sensing burst measurement resource configuration and sensing burst measurement resource configuration may be interchangeable.
[0058] A beam / antenna port may be interpreted as a TCI state. Transmission, reception, and measurement (e.g., transmission, reception, and measurement of a sensing burst / sensing RS) may be interpreted as interchangeable. A sensing resource and a sensing RS resource may be interpreted as interchangeable. A sensing signal and a sensing RS may be interpreted as interchangeable.
[0059] (Wireless Communication Method) The 0th to 3rd embodiments may be applied to a case where a UE receives / measures a sensing RS (for example, the above-mentioned UE monostatic sensing (FIG. 1A), bistatic sensing from a BS to a UE (FIG. 3A), or bistatic sensing from a UE to a UE (FIG. 3B)). The 4th embodiment may be applied to a case where a UE transmits a sensing RS (for example, the above-mentioned UE monostatic sensing (FIG. 1A), bistatic sensing from a UE to a BS (FIG. 2B), or bistatic sensing from a UE to a UE (FIG. 3B)).
[0060] <Embodiment 0> A UE may receive configuration information (of time domain resource allocation (TDRA)) regarding the time of multiple sensing resources in one sensing burst, and control reception / measurement of the sensing bursts / sensing resources based on the configuration information. The same / common TDRA may be configured for different bursts, or different TDRAs may be configured for different bursts. The configuration information may be sensing burst measurement resource configuration.
[0061] The TDRA of multiple sensing resources within one sensing burst can be determined in the following manner.
[0062] <<Option 1>> The TDRA of multiple sensing resources within one sensing burst is explicitly configured / indicated to the UE by at least one of the following: the burst duration, the number of sensing resources within one burst, the duration of each sensing resource configured / indicated for sensing burst measurement resource configuration (for uniform resource pattern), and the relative start time (or time offset) of each sensing resource within one burst.
[0063] One TDRA / resource pattern may be configured / applied to all sensing bursts (e.g., burst-common), or multiple TDRAs / resource patterns (e.g., burst-specific) may be configured / applied to different sensing bursts.
[0064] Variation: The indication / configuration of the sensing TDRA for one sensing burst may be cell-wide, group-wide or UE-specific indication / configuration.
[0065] <<Option 2>> The UE may determine the TDRA of multiple sensing resources within one sensing burst based on at least one of the resource pattern type (uniform / non-uniform / random / coprime, etc.) and related parameters (resource spacing, etc.).
[0066] One resource pattern is configured / applied for all sensing bursts, or multiple resource patterns (e.g., burst-specific) are configured / applied for different sensing bursts (e.g., three uniform patterns are configured and applied every three bursts).
[0067] The resource pattern may be explicitly instructed / configured to the UE by the NW, or the UE may determine it based on the sensing use case and requirements (e.g., speed / coverage performance requirements, etc.). For example, if a uniform resource pattern is supported / configured, the UE may determine the resource interval based on the required maximum unambiguous speed.
[0068] Variation: The indication / configuration of the sensing resource pattern for one sensing burst may be cell-wide, group-wide, or UE-specific.
[0069] In one sensing burst measurement resource configuration, one or more candidate TDRAs (or resource patterns for TDRAs) of multiple sensing resources may be configured / indicated. Configuring / indicating multiple TDRAs (or resource patterns for TDRAs) enables adaptation to different sensing services, meets measurement result requirements, and reduces overhead.
[0070] <<Embodiment 0-1>> This embodiment corresponds to Option 1 of the above-described embodiment 0. In a time domain resource allocation (TDRA) configured by the NW or determined by the UE, the UE may receive / measure multiple sensing resources.
[0071] <<<<TDRA parameters for N sensing resources in one burst>>> Duration of one sensing resource (optional): {T d10 , T d11 , ..., T d1(Nー1)}, T d1i is the duration of the i-th sensing resource. This parameter may be set for the sensing resource rather than the resource pattern, or may be implicitly indicated by the sensing resource itself (e.g., the time-frequency resource of each sensing signal).
[0072] Sensing resource interval: {T p10 , T p11 , ...T p1(Nー2)}, T p1i is the time between the start time of the i-th sensing RS resource and the start time of the (i+1)-th sensing RS resource, or is the offset of the (i+1)-th sensing RS resource from the i-th sensing resource.
[0073] The time unit of the sensing resource interval may be at least one of an OFDM symbol, a slot, a subframe, a half frame, and a frame.
[0074] The sensing resource interval may be referred to as an intra-burst interval, or the start times (indexes) of the N sensing resources may be set / indicated.
[0075] A plurality of resource intervals may be set / indicated as the sensing resource interval. For example, the following options 1A and 1B may be applied.
[0076] Option 1A (individual setting): N-1 resource intervals T, where 0≦i≦N-2 p1i are individually set / indicated from a predefined set / range of values (e.g., maximum / minimum resource interval).
[0077] Option 1B (joint configuration): A set of candidate values for multiple N different resource intervals may be predefined (e.g., using a table). One set (or set index) is the set of candidate values for the resource intervals {T p10 , T p11 , ..., T p1(Nー2)} may be set / instructed integrally.
[0078] <<<TDRA Configuration / Instruction for N Sensing Resources in One Burst>>> For a P / SP sensing burst, one P / SP sensing burst measurement resource configuration includes one or more (L1) configurations for L1 P / SP sensing bursts on the TDRA of N sensing resources.
[0079] For P / SP sensing bursts, if there is one configuration for the TDRA of the sensing resource, a burst-common sensing resource pattern may be configured. If there are L1 configurations for the TDRA of the sensing resource, a burst-specific sensing resource pattern may be configured for each of the L1 consecutive P / SP sensing bursts.
[0080] In the case of an AP sensing burst, one or more (L) configurations for L P / SP sensing bursts on a TDRA of N sensing resources may be included in one AP sensing burst measurement resource configuration with L sensing bursts.
[0081] For an AP sensing burst, if there is one configuration for the TDRA of the sensing resource, a burst-common sensing resource is configured. If there are L configurations for the TDRA of the sensing resource, burst-specific sensing resources may be configured.
[0082] <<Embodiment 0-2>> This embodiment corresponds to Option 2 of the above-mentioned embodiment 0. For a resource pattern configured by the NW or determined by the UE, the UE may receive / measure multiple sensing resources. The UE acquires a TDRA based on the resource pattern and parameters of the resource pattern, which can reduce the number of parameters required to configure / indicate the TDRA compared to the case where the parameters shown in Option 1 are configured. Details of the resource pattern will be described in the first and second embodiments.
[0083] When multiple resource patterns are supported (e.g., a uniform pattern, a non-uniform pattern, a random pattern in embodiment 2-2, and a co-prime pattern in embodiment 2-3), the UE may be explicitly configured / instructed to select a resource pattern, or may determine the resource pattern based on the sensing burst type / application and sensing performance requirements.
[0084] For example, for a sensing burst type / application "target tracking" that requires a large maximum unambiguous rate, a non-uniform resource pattern may be supported / applied, whereas for a sensing burst type / application "target detection and tracking" that requires a small maximum unambiguous rate and beam sweeping, a uniform resource pattern may be supported / applied.
[0085] For different sensing ranges, different resource patterns may be supported / applied.
[0086] Different resource patterns may be supported / applied for different sensing methods or for maximum UE capabilities.
[0087] Fig. 4 shows an example of a table showing a resource pattern according to the 0th embodiment. In the example of Fig. 4, indices corresponding to the start times when resources N=4 or 8 in a burst are defined. For example, index 0 indicates that when N=4, the start times of each resource are {0, 2, 5, 7}, and when N=4, the start times of each resource are {0, 1, 5, 6, 12, 13, 14, 15}. This start time may refer to a time interval (e.g., slot) from the first resource.
[0088] 5A to 5C are diagrams showing examples of arrangement of sensing resources within one sensing burst in the 0th embodiment. Fig. 5A shows an example in which the number of resources is four and the time intervals of each resource are non-uniform. Fig. 5B shows an example in which the number of resources is four and the time intervals and resource periods of each resource are non-uniform. Fig. 5A shows an example in which the number of resources is eight and the time intervals of each resource are non-uniform.
[0089] According to the 0th embodiment, the UE can appropriately receive / measure sensing resources according to configuration information regarding the times of multiple sensing resources in one sensing burst.
[0090] <First Embodiment> A UE may receive configuration information (first configuration information) regarding multiple sensing resources having a uniform / regular resource pattern in one sensing burst, and may receive / measure the sensing burst / sensing resources based on the configuration information. The following parameters regarding time domain resource allocation for the uniform resource pattern may be configured by the NW or determined by the UE.
[0091] <<<<Time Domain Resource Allocation of Uniform Resources in Measurement Resource Configuration for Each Sensing Burst>>> For time domain resource allocation of uniform resources in measurement resource configuration for each sensing burst, the following parameters may be configured / instructed to the UE.
[0092] Duration of one sensing resource (optional): T d1 This parameter may be set for the sensing resource rather than the resource pattern, or this information may be implicit by the sensing resource itself (e.g., the time-domain resource of each sensing signal).
[0093] Resource interval (sensing resource interval / interval within burst): T p1 This parameter is the interval between the start times of two consecutive uniform sensing RS resources or the interval between two consecutive sensing resources. The time unit of the resource interval (sensing resource interval) may be at least one of an OFDM symbol, a slot, a subframe, a half frame, and a frame.
[0094] The intra-burst interval, or the period of the sensing resource within one burst, may be set / indicated.
[0095] Resource Interval T p1 A single value of may indicate a uniform resource pattern.
[0096] 6A shows an example in which both the duration and resource interval of one sensing resource are configured, where the resource interval is the interval between the start times of two consecutive uniform sensing RS resources.
[0097] 6B shows an example in which a resource interval is set. The duration of one sensing resource may or may not be set. In this case, the resource interval is the interval between two consecutive sensing resources.
[0098] Aperiodic Sensing Burst Measurement Resource Configuration The UE may receive an aperiodic (AP) sensing burst measurement resource configuration (for aperiodic sensing bursts), in which a burst-common or burst-specific resource interval T p1 may be configured / specified for one or more sensing bursts in the sensing burst measurement resource configuration of one AP.
[0099] T for multiple sensing bursts in a single AP sensing burst measurement configuration p1 The constraints / requirements for may be predefined in the specification. p1 The restrictions / requirements for may vary depending on the type / application of the sensing burst. For example, if the type / application of the sensing burst is "target tracking," then there may be multiple burst-specific resource intervals T in one AP sensing burst measurement resource configuration. p1 The co-prime condition may be required (to maximize the speed improvement).
[0100] Resource Interval T p1 The candidate values of may include several relatively prime integers. That is, by flexibly configuring multiple resource intervals in the AP sensing burst configuration, it is possible to realize resource intervals that satisfy the relatively prime condition.
[0101] <<<Periodic / Semi-persistent Sensing Burst Measurement Resource Configuration>>> The UE may receive a periodic / semi-persistent (P / SP) sensing burst measurement resource configuration (for periodic / semi-persistent sensing bursts).
[0102] Example 1: In this configuration, for each P / SP sensing burst measurement resource configuration, the burst common resource interval T p1 may be set / indicated.
[0103] 7 is a diagram illustrating an example 1 of a sensing burst having a uniform resource pattern according to the first embodiment. p1 , one burst interval T p0 1 shows a burst-common / uniform resource pattern for P / SP sensing bursts based on
[0104] Example 2: Multiple resource intervals are configured, and one burst interval (burst common resource interval T p1 ) may be set. The resource interval may be common to several bursts.
[0105] 8 is a diagram illustrating Example 2 of a sensing burst having a uniform resource pattern according to the first embodiment. Example 2 shows a sensing burst having two resource intervals {T p1 , 0, T p1,1}, one burst interval T p0 1 shows a burst-specific uniform resource pattern for P / SP sensing bursts based on
[0106] Example 3: In one sensing burst measurement resource configuration with a uniform resource pattern, multiple resource intervals {T p1,0 , T p1,1 , ..., T p1,L1-1} (e.g., L1 values of resource intervals) is set / indicated, the L1 intervals may be applied to L1 consecutive sensing bursts (rather than L1 consecutive sensing resources within one burst).
[0107] 9 is a diagram illustrating Example 3 of a sensing burst having a uniform resource pattern according to the first embodiment. Example 3 shows a sensing burst with three resource intervals {T p1 , 0, T p1,1 , T p1,2}, three burst intervals {T p0,0 , T p0,1}, the burst-specific uniform resource pattern for AP sensing bursts is shown.
[0108] According to the first embodiment, the UE can appropriately receive / measure sensing resources in accordance with configuration information on multiple sensing resources having a uniform / regular resource pattern, which reduces configuration overhead and reduces the processing load on the UE compared to configuration of a non-uniform / irregular resource pattern.
[0109] Second Embodiment A UE may receive configuration information (second configuration information) regarding multiple sensing resources having a non-uniform / irregular resource pattern in one sensing burst, and control reception / measurement of the sensing burst / sensing resources based on the configuration information. Each parameter in this embodiment is configured by the NW and transmitted to the UE, or determined by the UE.
[0110] Compared to a uniform resource pattern, a non-uniform resource pattern can support a higher maximum clear rate. A non-uniform resource pattern provides more flexibility in time-domain resource allocation in trading off performance and overhead.
[0111] Regarding the non-uniform sensing resource pattern, the following methods 1 to 3 are possible. Note that methods 1 to 3 correspond to methods 2-1 to 2-3 described later.
[0112] <<Method 1>> The UE may generate a non-uniform resource pattern based on a basic uniform resource pattern and a muting / adding pattern. The resource pattern can be optimized based on various principles, which are usually non-uniformly distributed. To generate a non-uniform resource pattern, the following steps can be considered:
[0113] Step 1: The UE generates a basic uniform resource pattern in which N′ sensing resources are uniformly distributed, and sets the resource interval as T p1 Let's say.
[0114] Step 2: The UE mutes or adds some resources to the basic uniform resource pattern to generate a non-uniform resource pattern. Step 2 may be performed using the following method 1-1 or 1-2.
[0115] Method 1-1: Mute pattern with values 0 / 1 {m 0 , m 1 , ..., m N’ー1} (e.g., m i = 0 or 1) is set. The sensing signal is m i = 0 resources. i If there are N sensing resources in one burst, then Σ i=0 N′-1 m i =N'-N and N'≧N must be satisfied, that is, N'-N resources among the N' basic uniform resources are muted.
[0116] 10 is a diagram showing an example of generating non-uniform resources using muting patterns in method 1-1. In FIG. 10, resources #0' to #11' are set, and a muting pattern {0,0,1,1,0,1,0,0,1,0,0,0} is set. As a result, the resource corresponding to muting pattern 1 is muted.
[0117] Method 1-2: Non-negative integer (x i ≧0) 0 , x 1 , ..., x N’ー2} may be set / added. i If >0, then x i The sensing resource is spaced apart by an interval (1 / (x i +1) * T p1 ) or interval floor(1 / (x i +1) * T p1 ) are added uniformly.
[0118] In Method 1-2, for N sensing resources in one burst, N′+Σ i=0 N′-2 x i = N and N' ≤ N. That is, N - N' resources are added in addition to the N' basic uniform resources.
[0119] 11 is a diagram showing an example of generating uneven resources by adding a pattern in method 1-2. In FIG. 11, resources #0' to #4' are set, and an additional pattern {1, 0, 0, 2, 0} is set. After #0', where additional pattern 1 is set, 1 / 2T p1 After #3' where additional pattern 2 is set, one resource is added at an interval of 1 / 3T. p1 The interval adds two resources.
[0120] Additional pattern (x i ) may be set to only 1 or 0. In other words, only whether or not to add resources may be indicated for each resource. The number of resources to be added may be set in advance to a predetermined value for each burst / for each set of bursts.
[0121] Method 2: The UE may generate a non-uniform (random) resource pattern based on a random function. Based on compressed sensing theory, random sampling can provide superior performance for sparse parameter estimation (e.g., delay / Doppler estimation in multipath channels).
[0122] Random sampling can be achieved by randomly allocating time domain resources within a burst. A pseudorandom function can support the generation of pseudorandom values and can be used to generate random resource patterns.
[0123] <<Method 3>> The UE may generate a non-uniform (relatively prime) resource pattern using relatively prime resource spacing. For example, based on radar theory, relatively prime pulse repetition frequencies (PRFs) can be considered to resolve velocity uncertainty.
[0124] Disjoint resource spacings, which indicate disjoint PRFs, can be supported to generate disjoint resource patterns.
[0125] <<Embodiment 2-1>> A UE may receive configuration information regarding a muting pattern / addition pattern for multiple sensing resources (information instructing to mute or add resources in a uniform resource pattern), and control measurement / reception of non-uniform / irregular sensing resources based on the configuration information.
[0126] The following describes the parameters of time domain resource allocation for non-uniform / irregular resources.
[0127] Basic uniform resource pattern: p1 , N'} may be set. p1 is the resource interval, and N' is the number of uniform resource candidates. The number of sensing resources in one burst is N, where N≦N'. T p1 and N', the resource interval T p1 A basic uniform sensing resource pattern is generated from the N′ uniformly distributed sensing resources. The UE may generate a non-uniform resource pattern based on the basic uniform sensing resource pattern and the mute / add pattern defined below.
[0128] For the mute / add pattern, at least one of the following options 1 to 3 may be applied.
[0129] <<<Option 1>>> Mute Pattern {m 0 , m 1 , ..., m N’ー1}, and m i = 0 or 1. Σ i=0 N′-1 m i =N'-N. The UE satisfies m i It is assumed that sensing signals are transmitted only on resources with 0. The mute pattern setting / instruction can be determined by the following options:
[0130] Option 1-1: Muting patterns of different lengths N' and densities N / N' are predefined in the specification or configured by the NW, and one muting pattern (e.g., an index in a muting pattern table) is explicitly indicated / configured / reported (e.g., based on sensing performance requirements and sensing overhead constraints).
[0131] Fig. 12 shows an example of a mute pattern table for option 1-1. In Fig. 12, muting patterns are defined for densities N / N'=1, 0.5, and 0.25 when N'=8, 12, and 16. Note that the length N' and density N / N' of the mute pattern are not limited to the example shown in Fig. 12.
[0132] Alternatively, in order to make the total duration of one sensing burst as long as possible, the first and last bits of the mute pattern may be set to "0". 0 = m N’ー1 = 0 is recommended.
[0133] Option 1-2: Mute pattern is M basic,mute M basic uniform sensing resources (or among them) mute It may be set / indicated / reported by a resource. For example, mute = 2 and M basic,mute If = 5 is set, the UE may assume that 2 sensing resources out of every 5 sensing resources are muted.
[0134] The UE is basic,mute The value of M mute The value of may be received in advance by higher layer signaling, etc. This makes it possible to reduce overhead due to the setting, compared to an example in which a muting pattern is set for all resources.
[0135] FIG. 13 is a diagram showing an example of a mute pattern in option 1-2. In the example of FIG. mute = 1 and M basic,mute= 2, the UE assumes that one sensing resource out of every two sensing resources is muted.
[0136] <<<Option 2>>> Pattern {x 0 , x 1 , ..., x N’ー2}(x i ≧0) may be added. i=0 N′-2 x i =N.
[0137] The UE is x i It may be assumed that a sensing resource is added between the i-th and (i+1)-th basic uniform sensing resource.
[0138] Supplemental Resource Pattern: Uniform supplemental resource pattern: The UE receives x i The sensing resource is (1 / (x i +1) * T p1 ) interval. i +1) * T p1 If " is not an integer, the resource interval for additional resources is floor(1 / (x i +1) * T p1 ) may be an integer obtained by
[0139] Non-uniform additional resource pattern: x of additional resources from the i-th sensing resource i The interval / offset may be set / indicated.
[0140] <<<<<Setting / Indicating Additional Resource Patterns>>>>> Setting / indicating additional patterns may be determined by the following options.
[0141] Option 2-1: Additional patterns with different lengths N' and densities N / N' may be predefined in the specification or configured by the network, and one additional pattern may be indicated / configured / reported. The additional pattern may be determined based on sensing performance requirements and overhead constraints. In option 2-1, a uniform additional resource pattern is assumed.
[0142] 14 is an example of a table showing additional patterns of Option 2-1 in Embodiment 2-1. When N and N′ are set / instructed, the UE may determine the additional pattern for each density based on this table.
[0143] Option 2-2: M basic For each sensing resource (or M basic Inside) M add By adding sensing resources, additional patterns are configured / instructed / reported and additional sensing resources are added.
[0144] For example, M basic,add = 5 and M add If ≠ 2 is set, the UE assumes that two sensing resources are added for every five sensing resources. Uniform and / or non-uniform additional resource patterns may be supported. For non-uniform additional resource patterns, the configuration of the additional resources (pattern) (e.g., spacing / offset from the i-th sensing resource) may be indicated / configured.
[0145] FIG. 15 is a diagram showing an example of an additional pattern of option 2-2 in embodiment 2-1. basic,add = 5 and M add =2 is set, and it is assumed / decided that #2 and #5 will be added between resources #0 to #6.
[0146] The UE is basic,add The value of M add The value of may be received in advance by higher layer signaling, etc. This makes it possible to reduce overhead due to the setting, compared to an example in which additional patterns are set for all resources.
[0147] <<<Option 3>>> A hybrid pattern of muting and addition will be explained. Using the muting pattern of option 1 and the additional pattern of option 2, a hybrid pattern of muting and addition can be defined for a non-uniform resource pattern in the time domain.
[0148] <<<<<Option 3-1>>>> The muting and additional patterns may be set separately. Note that it is assumed that both the muting pattern and the additional pattern have a length of N'.
[0149] Option 3-1-1 (Combined, e.g., exclusive-or operation): The UE i The additional value x for index i where i is "1" i Assume that is omitted, i.e., x i >0 or x i = 0, m i If = 1, no resources are added.
[0150] Option 3-1-2 (Independent Use, e.g., or operation): The UE may assume that the configured additional pattern is used as the muting pattern. i = 0 or 1, the additional value x i Resources for may be added.
[0151] 16A is a diagram showing a resource pattern before muting / addition in option 3-1 of embodiment 2-1. Applying options 3-1-1 / 3-1-2 based on this resource pattern will be considered.
[0152] 16B is a diagram showing an example of muting / addition in option 3-1-1 of embodiment 2-1. In FIG. 16B, muting bit m i = 1, additional value x i Resources with a value of 1 are muted and not added.
[0153] 16C is a diagram showing an example of muting / addition in option 3-1-2 of embodiment 2-1. In FIG. 16C, muting bit m i = 1, additional value xi = 1, the resource is muted but also added.
[0154] <<<<<Option 3-2>>>> In the combined mute and additional pattern configuration scheme, the UE may assume that the mute pattern is used first, and the additional pattern is used after mute. The mute pattern has length N', and the length of the additional pattern is determined by the number of "0"s in the mute pattern.
[0155] For example, if N'=8 and the muting pattern is {0,1,1,0,0,1,0,0} with 5 "0"s, then the length of the additional pattern is 5. That is, no additional pattern is applied to the muted resource.
[0156] 17A is a diagram showing a resource pattern before muting / addition in option 3-2 of embodiment 2-1. Applying option 3-2 based on this resource pattern will be considered.
[0157] 17B is a diagram showing an example of a resource pattern after muting in option 3-2 of embodiment 2-1. In FIG. 17B, muting bit m i Resources with a value of 1 are muted.
[0158] 17C is a diagram showing an example of a resource pattern after addition in option 3-2 of embodiment 2-1. In FIG. 17C, the additional pattern is applied after muting as in FIG. 17B. The additional value x i <Resources are added to the resources (#1, #4) that correspond to 1.
[0159] The pattern of additional resources may be determined by the adjacent resources after muting (resource interval to adjacent resources). For example, after muting with {0, 1, 1, 0, 0, 1, 0, 0}, the interval between the second and third resources is T p1 , the interval between the third and fourth resources is 2T p1 When adding the pattern {0, 1, 0, 2, 0}, the period of the first added resource is 1 / 2*T p1, the period of the second and third added resources is 2 / 3*T p1 That is, the longer the resource interval after muting, the larger the number of additional resources set.
[0160] In the case of Option 3-1-2 and Option 3-2, the final number of sensing resources N is N = Σ i=0 N′-1 (1-m i ) + x i It can be calculated by:
[0161] The setting / instruction of hybrid mute and additional patterns in option 3 will now be described.
[0162] <<<<<Configuration Example 1 (Corresponding to Option 3-1)>>>> The muting pattern instruction / configuration and the additional pattern instruction / configuration of Option 2 may be configured / instructed to the UE independently based on the length N'. The UE may instruct / configure the application of the priority of the pattern addition and the muting pattern, i.e., Option 3-1-1 (the priority of the pattern addition is lower than that of the muting pattern) or Option 3-1-2 (the priority of the muting pattern and the pattern addition is the same), or may report this as a UE capability.
[0163] Configuration Example 2 (Corresponding to Option 3-2) Configuration Example 2-1: Mute / add patterns with different lengths N' and densities N / N' may be predefined in the specifications. A single mute / add pattern may be instructed / configured by the network to the UE, or may be reported as a UE capability.
[0164] Setting example 2-2: The UE sets M as the mute / add pattern. basic、mute M muted across (or within) basic uniform sensing resources mute resources and M after muting muted、add M added across each of the sensing resources add These resources may be configured / instructed or reported as UE capabilities.
[0165] Fig. 18 is a diagram showing an example table of muting / addition patterns for different lengths / densities in setting example 2. In Fig. 18, the notation "muting pattern + addition pattern" is used. For example, in a resource with length N' = 4, it is defined as All 0 vector + All 0 vector, {0,1,0,0} + {0,1,0}, which means that the muting pattern is All 0 vector, {0,1,0,0}, and the addition pattern is All 0 vector, {0,1,0}.
[0166] <<Embodiment 2-2>> A UE may receive configuration information of a random resource pattern for multiple sensing resources in one sensing burst, and control reception / measurement of the sensing resources based on the configuration information.
[0167] <<<<Mute Pattern Definition Method in Option 1 of Embodiment 2-1>>> Mute Pattern {m 0 , m 1 , ..., m N’-1} is generated based on a predefined random 0 / 1 function and parameters (initial values, etc.) related to the random function. For example, PN sequence generation based on a 31-gold sequence (a Gold sequence with a degree of 31) may be predefined in the specification, and an initialization value for generalizing the PN sequence may be indicated / set to the UE.
[0168] A random function that can generate the same pseudo-random sequence of 0 / 1 based on the same parameters / inputs during sensing at the transmitter (BS or UE) and the receiver (BS or UE) may be predefined in the specification. The relevant parameters / inputs of the random function (e.g., initial value, number of non-zero values, etc.) can be set / instructed for muting pattern setting.
[0169] If multiple random 0 / 1 functions are supported, the random functions should also be configured / indicated.
[0170] Variation: The random function is determined based on the number of resources in the burst (e.g., if the number of resources is greater than K, then an M-sequence is used, otherwise a ZC sequence is used).
[0171] <<<<Additional Pattern Definition Method in Option 2 of Embodiment 2-1>>> Additional pattern {x 0 , x 1 , ..., x N’-1} is a predefined random integer function, parameters associated with the random function, and a range constraint for the value (0≦x i ≦N−N′ and Σ i=0 N′-1 x i =N-N').
[0172] A random function that can generate the same pseudo-random integer using the same parameters at the transmitter (BS or UE) and receiver (BS or UE) of the sensing resource is predefined in the specification. The relevant parameters / input values of the random function (e.g., value range, initialization value, etc.) are set / specified for adding pattern settings.
[0173] If multiple random integer functions are supported, the random function may also be configured / specified in the UE, or the UE may decide the random function based on the number of resources in a burst (e.g., if the number of resources is greater than K, an M-sequence is used, otherwise a ZC sequence is used).
[0174] <<<<Method for Defining Hybrid Muting and Additional Patterns in Option 3 of Embodiment 2-1>>> The random 0 / 1 function and random integer function for generating the muting pattern and the additional pattern may be predefined in the specification. Alternatively, one (common) random function may be defined, and the UE may obtain / determine the 0 / 1 sequence for the muting pattern and the integer sequence for the additional pattern based on the random sequence generated from the common random function. The UE may be instructed / configured with the (two) random functions / related parameters / input values and report them as capability information.
[0175] Variation: The random resource pattern may be combined with the setting / indication of sensing resources in embodiment 0-1.
[0176] Resource interval / start time of sensing resource {T p10 , T p11 , ...T p1(Nー2)} is dictated / set by the random function / associated parameters (e.g. range of values / initialization value etc.).
[0177] <<Embodiment 2-3>> A UE may receive configuration information of co-prime resource patterns for multiple sensing resources in one sensing burst, and control measurement / reception of the sensing resources based on the configuration information.
[0178] In the disjoint resource pattern, K sub-bursts are included in one sensing burst. Each parameter of the i-th sub-burst is defined as follows (see FIG. 19): Number of resources in the i-th sub-burst: M i M in the i-th sub-burst i Time interval of a resource: T i0 , T i1 , ..., T i(Miー1) (The interval between the start times of two consecutive sensing RS resources in the i-th sub-burst). Time offset between the i-th and i+1-th sub-bursts: Ti' (the time between the start of two consecutive sensing sub-bursts).
[0179] As candidates for disjoint resource patterns, at least one of the following cases may be applied.
[0180] Case 1: The resource intervals within one sub-burst (intervals within a sub-burst) are mutually prime, i.e., T i0 , T i1 , ..., T i(Miー1) are mutually prime integers.
[0181] Case 2: The intervals between sub-bursts are relatively prime, i.e., T 0 ', T 1 ', ..., T Kー1 ' are mutually prime integers.
[0182] Case 3: Both the resource interval within one sub-burst (inter-sub-burst interval) and the interval between sub-bursts are relatively prime.
[0183] Case 4: The resource interval within one sub-burst (the interval within a sub-burst) and the resource intervals of multiple sub-bursts are relatively prime, e.g., T i0 =T i1 =…=T i(Miー1) and T 00 , T 10 , ..., T (Kー1)0 are relatively prime (see FIG. 20).
[0184] <<<Difference Between Sub-Burst Configuration and Multiple Sensing Burst Configuration>>> Based on the 0th / 1st embodiments, the AP sensing burst measurement resource configuration can be used to configure K sensing bursts with disjoint resource patterns and burst intervals, thereby realizing the disjoint resource patterns of the present embodiment. However, the sub-burst configuration of the present embodiment is required to periodically / semi-continuously transmit K sensing bursts with disjoint resource patterns (e.g., P / SP sensing bursts cannot support disjoint inter-burst intervals).
[0185] The UE may receive a configuration of disjoint resource patterns for multiple sensing RS resources in one sensing RS burst. The following disjoint resource patterns and parameters may be configured / indicated for each sensing burst measurement resource configuration:
[0186] <<<Embodiment 2-3-1>>> K sensing sub-bursts within one sensing burst are configured / instructed, and M resources are allocated to each of them, and the resource intervals within the sub-bursts may be mutually prime (see FIG. 21 ). In this case, the following parameters may be configured / instructed:
[0187] The number of mutually prime sub-bursts in one sensing burst: K. The number of resources in one sensing sub-burst: M. The resource interval in each sensing sub-burst: {T 0 , T 1 , ..., T M-1} (mutually prime). Subburst intervals of all sensing subbursts: T0 '.
[0188] <<<Embodiment 2-3-2>>> K uniform sensing sub-bursts within one burst are configured / instructed, and the intra-sub-burst resource intervals of the K sub-bursts may be mutually prime. In this case, the following parameters may be configured / instructed:
[0189] The number of uniform sub-bursts in one sensing burst is K. The number of sensing RS resources in the i-th sub-burst is M. i (Special case: M i = M is constant for all sub-bursts). Resource spacing within a sub-burst: the i-th normal / uniform sensing sub-burst is T i If the resource interval {T 0 , T 1 , ..., T Kー1} are mutually prime integers. The sub-burst interval between two consecutive sensing sub-bursts: T 0 '.
[0190] <<<Embodiment 2-3-3>>> K uniform sensing sub-bursts, each including M resources, are configured / instructed, and the resource intervals within the sub-bursts are the same (T 0 ) and the intervals between the multiple sensing sub-bursts are relatively prime, the following parameters may be set / indicated:
[0191] The number of uniform sensing sub-bursts in one sensing burst: K. The number of resources in one uniform sensing sub-burst: M. The resource interval in the uniform sensing sub-burst: T. 0 Interval between adjacent sensing sub-bursts (time offset): T 0 ', T 1 ', ..., T K-1 ' (relatively prime).
[0192] A combination of embodiment 2-3-1 / embodiment 2-3-2 / embodiment 2-3-3 may be supported.
[0193] <<<<Specific Example of Embodiment 2-3>>> In embodiment 2-3, the total number of resources in one sensing burst is the sum of the number of resources in the sub-bursts (M 0 +M 1 +...+M Kー1 or M K ) (corresponding to the N resources defined in the 0th embodiment).
[0194] The UE behavior regarding speed estimation may be defined / configured as follows: Speed estimation is first performed for each sensing sub-burst without beam sweeping, and then (assumed to be performed) across multiple sensing sub-bursts for speed estimation refinement / angle estimation; One speed measurement is reported for one sensing RS burst containing multiple sensing RS sub-bursts.
[0195] The disjoint sensing resource patterns in embodiments 2-3 may be set to burst-common / burst-specific in the P / SP / AP sensing burst measurement resource configuration, as described in the 0th embodiment.
[0196] The mutually prime condition in embodiments 2 and 3 may be relaxed based on the requirement of the maximum unambiguous rate. For example, the greatest common divisor or greatest common factor of the values in the set is determined based on the requirement of the maximum unambiguous rate and may be greater than 1. Note that the mutually prime condition is a special case where the greatest common factor is 1. For example, the greatest common divisor of {2, 6, 8} is 2. If the maximum unambiguous rate of two slots satisfies the requirement, {2, 6, 8} can be used as the resource pattern of one sub-burst.
[0197] The random resource pattern of embodiment 2-2 may be used to define an irregular sub-burst resource pattern in the sub-burst defined in embodiment 2-3.
[0198] Embodiment 2-2 and Embodiment 2-3 are examples of realizing irregular / non-uniform resource patterns with good maximum clear speed performance. Other algorithms can also be considered for designing irregular / non-uniform resource patterns for other sensing KPIs. This may affect the tables of irregular / non-uniform resource patterns in Embodiment 0 / Embodiment 2-1.
[0199] The sub-burst configuration / instruction of embodiment 2-3 can be combined with the non-uniform resource pattern of embodiment 2-1 / 2-2. For example, the resources within each sub-burst can be uniformly distributed, and the sub-bursts can be even / odd. However, when the resources within each sub-burst are uniformly distributed, the resources within a burst can be non-uniformly distributed as long as the lengths of the resources and the sub-bursts are different.
[0200] <Scale Factor> A scale factor S may be further defined / configured / instructed to control the total duration of one sensing RS burst and the sensing resource density. The UE may use the resource pattern obtained by multiplying the resource pattern (slot position) by the scale factor.
[0201] For example, in the case of the resource pattern {0, 2, 5, 7} and the scale factor S=4 configured in the 0th embodiment, the sensing resource for one burst may be located in the {0, 8, 20, 28}th slot (FIG. 22). By default, S=1 may be set.
[0202] The scale factor allows for flexible density configuration with dynamic overhead and sensing performance, and may be applied to all embodiments.
[0203] According to the second embodiment, the UE can appropriately receive / measure sensing resources according to configuration information on multiple sensing resources having non-uniform / irregular resource patterns. Compared to the example using a uniform / regular resource pattern, this enables flexible resource patterns, thereby improving sensing performance.
[0204] Third Embodiment A UE may receive a sensing burst measurement resource configuration and control measurement / reception of multiple sensing resources in one sensing burst based on the configuration, in which the configuration / instruction of related parameters of multiple sensing resources may be resource-specific / burst-specific / burst-common.
[0205] The related parameters may include sensing RS related parameters / beam related parameters. These parameters will be specifically described below.
[0206] As the sensing RS related parameters, at least one of the following may be included in the related parameters: Port number / port index; Power setting; Frequency resource setting (e.g., resource element (RE) density, frequency location, frequency hopping, etc.).
[0207] As the beam-related parameters, at least one of the following may be included in the related parameters: Antenna port number / antenna port index, Beam number / beam index, and Power setting.
[0208] The TDRA / resource pattern in the 0th / 1st / 2nd embodiments may be set independently of other related parameters. For example, the TDRA / resource pattern may be burst-common, and the related parameters may be burst-specific. For example, the TDRA / resource pattern may be burst-specific, and the related parameters may be burst-common.
[0209] Alternatively, the type of resource configuration (e.g., resource-specific, burst-specific, burst-common) may be set / indicated first. For example, if burst-common is set, the TDRA / resource patterns and related parameters in the 0th / 1st / 2nd embodiments are all burst-common.
[0210] According to the third embodiment, the UE can appropriately receive / measure sensing resources according to the sensing burst measurement resource configuration including sensing RS-related parameters / beam-related parameters.
[0211] <Fourth embodiment> A UE may receive at least one of configuration information regarding a time period (TDRA) of a uniform / non-uniform / random / disjoint sensing resource pattern and a sensing burst measurement resource configuration (including a sensing RS-related parameter / beam-related parameter), and transmit multiple sensing resources in one burst based on the configuration information.
[0212] The fourth embodiment (embodiments 4-0 to 4-3) corresponds to the content obtained by replacing "reception" and "measurement" (reception / measurement of sensing burst / RS / resources) in the 0th to 3rd embodiments with transmission (transmission of sensing burst / RS / resources). Description of the same parts as the 0th to 3rd embodiments will be omitted.
[0213] <<Embodiment 4-0>> A UE may receive configuration information (of time domain resource allocation (TDRA)) regarding the time of multiple sensing resources in one sensing burst, and may control transmission of the sensing bursts / sensing resources based on the configuration information. The same / common TDRA may be configured for different bursts, or different TDRAs may be configured for different bursts. Details of the TDRA are the same as those of the 0th embodiment.
[0214] <<Embodiment 4-1>> A UE may receive configuration information regarding multiple sensing resources having a uniform / regular resource pattern in one sensing burst, and may transmit the sensing burst / sensing resources based on the configuration information. Parameters regarding time domain resource allocation for the uniform resource pattern may be configured by the NW or determined by the UE. Details of the resource pattern, parameters, etc. are the same as those in the first embodiment. The "sensing burst measurement resource configuration" in the first embodiment may be read as "sensing burst transmission resource configuration."
[0215] <<Embodiment 4-2>> A UE may receive configuration information regarding multiple sensing resources having a non-uniform / irregular resource pattern in one sensing burst, and control transmission of the sensing burst / sensing resources based on the configuration information. Each parameter in this embodiment is configured by the NW and transmitted to the UE, or determined by the UE.
[0216] <<<Embodiment 4-2-1>>> A UE may receive configuration information regarding a mute pattern / addition pattern for multiple sensing resources, and control transmission of non-uniform / irregular sensing resources based on the configuration information. The configuration information regarding the mute pattern / addition pattern, for example, instructs muting or adding resources in a uniform resource pattern, and is similar to that in embodiment 2-1 in terms of details. In embodiment 2-1, "measuring a sensing burst" may be replaced with "transmitting a sensing burst," and "sensing burst measurement resource configuration" may be replaced with "sensing burst transmission resource configuration."
[0217] <<<Embodiment 4-2-2>>> The UE may receive configuration information of a random resource pattern for multiple sensing resources in one sensing burst, and control transmission of the sensing resources based on the configuration information. Details are the same as in embodiment 2-2. In embodiment 2-2, "measuring a sensing burst" may be replaced with "transmitting a sensing burst," and "sensing burst measurement resource configuration" may be replaced with "sensing burst transmission resource configuration."
[0218] <<<Embodiment 4-2-3>>> A UE may receive configuration information of co-prime resource patterns for multiple sensing resources in one sensing burst, and control transmission of the sensing resources based on the configuration information. Details are the same as in embodiment 2-3. In embodiment 2-2, "measurement of a sensing burst" may be replaced with "transmission of a sensing burst," and "sensing burst measurement resource configuration" may be replaced with "sensing burst transmission resource configuration."
[0219] <<Embodiment 4-3>> A UE may receive a sensing burst measurement resource configuration and control measurement / reception of multiple sensing resources within one sensing burst based on the configuration. In the configuration, the configuration / instruction of related parameters for multiple sensing resources may be resource-specific, burst-specific, or burst-common. Details are the same as in the third embodiment. The "sensing burst measurement resource configuration" in the third embodiment may be read as a "sensing burst transmission resource configuration."
[0220] <<Variations>> The transmitted sensing resource pattern may be burst-common / burst-specific.
[0221] Multiple resource patterns may be transmitted simultaneously based on configuration / instruction (based on sensing service, sensing coverage, sensing performance requirements, etc.).
[0222] The sensing resource pattern may be transmitted based on the latest configuration / instruction (meeting the time difference / timeline requirement).
[0223] According to the fourth embodiment, the UE can appropriately receive / measure sensing resources, and can obtain the same effects as the zeroth to third embodiments.
[0224] <Supplementary Information> <<Notification of Information to UE>> In the above-described embodiments, notification of any information to the UE [from a Network (NW) (e.g., a Base Station (BS))] (in other words, reception of any information from the BS by the UE) may be performed using physical layer signaling (e.g., DCI), higher layer signaling (e.g., RRC signaling, MAC CE), a specific signal / channel (e.g., PDCCH, PDSCH, reference signal), or a combination thereof.
[0225] When the notification is performed by a MAC CE, the MAC CE may be identified by including a new Logical Channel ID (LCID) in the MAC subheader, which is not defined in existing standards.
[0226] When the notification is made by DCI, the notification may be made by a specific field of the DCI, a Radio Network Temporary Identifier (RNTI) used to scramble Cyclic Redundancy Check (CRC) bits assigned to the DCI, the format of the DCI, etc.
[0227] In addition, notification of any information to the UE in the above-mentioned embodiments may be performed periodically, semi-persistently (triggered by an instruction from the UE or the gNB), or aperiodically (triggered by an instruction from the UE or the gNB).
[0228] In the above embodiment, the UE may receive information from the NW as at least one of the following QCL rules: QCL type A. QCL type B. QCL type C. QCL type D.
[0229] In the above-described embodiment, the QCL source RS for each QCL type may be at least one of the following several RSs: SSB; CSI-RS with / without repetition; TRS; DMRS of PDCCH / PDSCH.
[0230] In the above-described embodiment, the information from the NW may be set / indicated by the following methods: Common to multiple UEs or UE-specific; Cell-specific or common to multiple cells; Per UE / per CC / per BWP / per band / per cell / per cell group (CG).
[0231] <<Notification of Information from UE>> In the above-described embodiments, notification of any information from the UE [to the NW] (in other words, transmission / report of any information from the UE to the BS) may be performed using physical layer signaling (e.g., UCI), higher layer signaling (e.g., RRC signaling, MAC CE), a specific signal / channel (e.g., PUCCH, PUSCH, PRACH, reference signal), or a combination thereof.
[0232] When the notification is performed by a MAC CE, the MAC CE may be identified by including a new LCID, which is not defined in existing standards, in the MAC subheader.
[0233] If the notification is made by UCI, the notification may be transmitted using PUCCH or PUSCH.
[0234] In addition, notification of any information from the UE in the above-mentioned embodiments may be periodic, semi-persistent (triggered by an instruction from the UE or gNB), or aperiodic (triggered by an instruction from the UE or gNB).
[0235] <<Regarding Application of Each Embodiment>> In a UE / BS, specific (one or more) processes / operations / controls / assumptions / information for at least one of the above-mentioned embodiments may be applied (used) when one or more of the following conditions are met: - a higher layer parameter indicating the specific processes / operations / controls / assumptions / information is configured; - the specific processes / operations / controls / assumptions / information is determined based on related higher layer parameters; - the specific processes / operations / controls / assumptions / information is specified / activated / triggered by a MAC CE / DCI / UCI / resource / channel / RS; - a specific UE capability indicating (or related to) the specific processes / operations / controls / assumptions / information is reported or supported; - the application of the specific processes / operations / controls / assumptions / information is determined based on specific conditions.
[0236] The specific UE capability may indicate at least one of the following: - Supporting the specific processing / operation / control / assumptions / information; - Supporting transmission / reception / measurement of uniform resource patterns in one sensing RS burst; - Supporting transmission / reception / measurement of non-uniform resource patterns in one sensing RS burst; - Supporting transmission / reception / measurement of random resource patterns in one sensing RS burst; - Supporting transmission / reception / measurement of disjoint resource patterns in one sensing RS burst; - Number of sensing resources / instances in one burst (sensing RS burst); - Supporting P / SP / AP sensing bursts; - Supported sensing burst types / uses.
[0237] In the present disclosure, the terms "supporting" and "whether to support" may be read interchangeably.
[0238] Furthermore, the above-mentioned specific UE capability may be a capability that is applied across all frequencies (commonly regardless of frequency), or may be a capability for each frequency (e.g., one or a combination of a cell, a band, a band combination, a BWP, a component carrier, etc.), or may be a capability for each frequency range (e.g., Frequency Range 1 (FR1), FR2, FR3, FR4, FR5, FR2-1, FR2-2), or may be a capability for each subcarrier spacing (SubCarrier Spacing (SCS)), or may be a capability for each Feature Set (FS) or Feature Set Per Component-carrier (FSPC).
[0239] Furthermore, the specific UE capability may be a capability that is applied to all duplexing methods (commonly regardless of the duplexing method), or may be a capability for each duplexing method (e.g., Time Division Duplex (TDD) or Frequency Division Duplex (FDD)).
[0240] If the above conditions are not met, the UE / BS may follow the behavior specified in existing 3GPP releases.
[0241] (Supplementary Notes) The following inventions are supplementary notes regarding the 0th and 3rd embodiments of the present disclosure. [Supplementary Note 1] A terminal having: a receiving unit that receives configuration information related to the times of a plurality of sensing resources in one sensing burst; and a control unit that controls reception of the sensing resources based on the configuration information. [Supplementary Note 2] The terminal according to Supplementary Note 1, wherein the configuration information includes at least one of a duration of one sensing resource and a sensing resource interval. [Supplementary Note 3] The terminal according to Supplementary Note 1 or Supplementary Note 2, wherein the configuration information includes information indicating a uniform, non-uniform, random, or disjoint resource pattern. [Supplementary Note 4] The terminal according to any of Supplementary Notes 1 to 3, wherein the receiving unit receives at least one of a port number, a power setting, a frequency resource setting, and a beam number as related parameters of the plurality of sensing resources.
[0242] (Supplementary Notes) The following inventions are supplementary notes regarding the first and second embodiments of the present disclosure. [Supplementary Note 1] A terminal having: a receiving unit that receives configuration information related to a plurality of sensing resources having a uniform or non-uniform resource pattern in one sensing burst; and a control unit that controls reception of the sensing resources based on the configuration information. [Supplementary Note 2] The terminal according to Supplementary Note 1, wherein, when a uniform resource pattern is configured, the configuration information includes at least one of a duration of one sensing resource and a resource interval. [Supplementary Note 3] The terminal according to Supplementary Note 1 or Supplementary Note 2, wherein the configuration information includes information instructing muting or adding resources in the uniform resource pattern. [Supplementary Note 4] The terminal according to any of Supplements 1 to 3, wherein the configuration information includes configuration of a resource pattern in which at least one of sub-burst intervals and resource intervals within the sensing resource are mutually prime.
[0243] (Supplementary Notes) The following inventions are supplementary notes regarding the fourth embodiment (embodiments 4-0 and 4-3) of the present disclosure. [Supplementary Note 1] A terminal having: a receiving unit that receives configuration information related to the times of a plurality of sensing resources in one sensing burst; and a control unit that controls transmission of the sensing resources based on the configuration information. [Supplementary Note 2] The terminal according to Supplementary Note 1, wherein the configuration information includes at least one of a duration of one sensing resource and a sensing resource interval. [Supplementary Note 3] The terminal according to Supplementary Note 1 or Supplementary Note 2, wherein the configuration information includes information indicating a uniform, non-uniform, random, or disjoint resource pattern. [Supplementary Note 4] The terminal according to any one of Supplementary Notes 1 to 3, wherein the receiving unit receives at least one of a port number, a power setting, a frequency resource setting, and a beam number as parameters related to the plurality of sensing resources.
[0244] (Supplementary Notes) The following inventions are supplementary notes regarding the fourth embodiment (embodiments 4-1 and 4-2) of the present disclosure. [Supplementary Note 1] A terminal having: a receiving unit that receives configuration information related to a plurality of sensing resources having a uniform or non-uniform resource pattern in one sensing burst; and a control unit that controls transmission of the sensing resources based on the configuration information. [Supplementary Note 2] The terminal according to Supplementary Note 1, wherein, when a uniform resource pattern is configured, the configuration information includes at least one of a duration of one sensing resource and a resource interval. [Supplementary Note 3] The terminal according to Supplementary Note 1 or Supplementary Note 2, wherein the configuration information includes information instructing muting or adding resources in the uniform resource pattern. [Supplementary Note 4] The terminal according to any of Supplements 1 to 3, wherein the configuration information includes configuration of a resource pattern in which at least one of sub-burst intervals and resource intervals in the sensing resource are mutually prime.
[0245] (Wireless Communication System) The configuration of a wireless communication system according to an embodiment of the present disclosure will be described below. In this wireless communication system, communication is performed using any one of the wireless communication methods according to the above embodiments of the present disclosure or a combination thereof.
[0246] 23 is a diagram illustrating an example of a schematic configuration of a wireless communication system according to an embodiment. The wireless communication system 1 (which may be simply referred to as system 1) may be a system that realizes communication using Long Term Evolution (LTE) or 5th generation mobile communication system New Radio (5G NR) specified by the Third Generation Partnership Project (3GPP).
[0247] The wireless communication system 1 may also support dual connectivity between multiple Radio Access Technologies (RATs) (Multi-RAT Dual Connectivity (MR-DC)). MR-DC may include dual connectivity between LTE (Evolved Universal Terrestrial Radio Access (E-UTRA)) and NR (E-UTRA-NR Dual Connectivity (EN-DC)), dual connectivity between NR and LTE (NR-E-UTRA Dual Connectivity (NE-DC)), etc.
[0248] In EN-DC, the LTE (E-UTRA) base station (eNB) is the master node (Master Node (MN)), and the NR base station (gNB) is the secondary node (Secondary Node (SN)). In NE-DC, the NR base station (gNB) is the MN, and the LTE (E-UTRA) base station (eNB) is the SN.
[0249] The wireless communication system 1 may support dual connectivity between multiple base stations within the same RAT (for example, dual connectivity in which both the MN and SN are NR base stations (gNBs) (NR-NR Dual Connectivity (NN-DC))).
[0250] The wireless communication system 1 may include a base station 11 that forms a macrocell C1 with a relatively wide coverage, and base stations 12 (12a-12c) that are located within the macrocell C1 and form small cells C2 that are smaller than the macrocell C1. A user terminal 20 may be located within at least one of the cells. The location, number, shape, size, etc. of each cell and user terminal 20 are not limited to the embodiment shown in the figure. Hereinafter, when there is no need to distinguish between the base stations 11 and 12, they will be collectively referred to as the base station 10.
[0251] The wireless communication system 1 may utilize multi-input multi-output (MIMO). For example, one cell may be formed by one antenna / base station 10, or may be formed by multiple antennas / base stations 10. One [virtual] cell (which may be called, for example, a supercell) may be composed of multiple [virtual] cells (which may be called, for example, subcells). A supercell may correspond to a cell with a fixed physical range, and a subcell may correspond to a cell with a quasi-static / dynamically variable physical range. In this case, the wireless communication system 1 may be called a cell-free system.
[0252] The user terminal 20 may be connected to at least one of the multiple base stations 10. The user terminal 20 may utilize at least one of carrier aggregation (CA) using multiple component carriers (CCs) and dual connectivity (DC).
[0253] Each CC may be included in at least one of a first frequency band (Frequency Range 1 (FR1)) and a second frequency band (Frequency Range 2 (FR2)). The macro cell C1 may be included in FR1, and the small cell C2 may be included in FR2. For example, FR1 may be a frequency band of 6 GHz or less (sub-6 GHz), and FR2 may be a frequency band higher than 24 GHz (above-24 GHz). Note that the frequency bands and definitions of FR1 and FR2 are not limited to these, and for example, FR1 may correspond to a higher frequency band than FR2.
[0254] Furthermore, the user terminal 20 may perform communication using at least one of time division duplex (TDD) and frequency division duplex (FDD) in each CC.
[0255] The multiple base stations 10 may be connected by wire (e.g., optical fiber compliant with the Common Public Radio Interface (CPRI), an X2 / Xn interface, etc.) or wirelessly (e.g., NR communication). For example, when NR communication is used as a backhaul between the base stations 11 and 12, the base station 11 corresponding to the upper station may be called an Integrated Access Backhaul (IAB) donor, and the base station 12 corresponding to the relay station (relay) may be called an IAB node.
[0256] The base station 10 may be connected to the core network 30 directly or via another base station 10. The core network 30 may include, for example, at least one of an Evolved Packet Core (EPC), a 5G Core Network (5GCN), a Next Generation Core (NGC), and the like.
[0257] The core network 30 may include network functions (Network Functions (NF)) such as a User Plane Function (UPF), an Access and Mobility management Function (AMF), a Session Management Function (SMF), a Unified Data Management (UDM), an Application Function (AF), a Data Network (DN), a Location Management Function (LMF), and Operation, Administration and Maintenance (Management) (OAM). A single network node may provide multiple functions. Communication with an external network (e.g., the Internet) may also be performed via the DN.
[0258] The user terminal 20 may be a terminal that supports at least one of communication methods such as LTE, LTE-A, and 5G.
[0259] An Orthogonal Frequency Division Multiplexing (OFDM)-based radio access scheme may be used in the wireless communication system 1. For example, Cyclic Prefix OFDM (CP-OFDM), Discrete Fourier Transform Spread OFDM (DFT-s-OFDM), Orthogonal Frequency Division Multiple Access (OFDMA), Single Carrier Frequency Division Multiple Access (SC-FDMA), or the like may be used in at least one of the downlink (DL) and uplink (UL).
[0260] The radio access scheme may also be called a waveform. Note that in the wireless communication system 1, other radio access schemes (e.g., other single-carrier transmission schemes, other multi-carrier transmission schemes) may be used as the UL and DL radio access schemes.
[0261] In the wireless communication system 1, a downlink shared channel (Physical Downlink Shared Channel (PDSCH)) shared by each user terminal 20, a broadcast channel (Physical Broadcast Channel (PBCH)), a downlink control channel (Physical Downlink Control Channel (PDCCH)), etc. may be used as the downlink channel.
[0262] Furthermore, in the wireless communication system 1, an uplink shared channel (Physical Uplink Shared Channel (PUSCH)) shared by each user terminal 20, an uplink control channel (Physical Uplink Control Channel (PUCCH)), a random access channel (Physical Random Access Channel (PRACH)), or the like may be used as an uplink channel.
[0263] The PDSCH transmits user data, higher layer control information, a System Information Block (SIB), etc. The PUSCH may transmit user data, higher layer control information, etc. Furthermore, the PBCH may transmit a Master Information Block (MIB).
[0264] Lower layer control information may be transmitted by the PDCCH. The lower layer control information may include, for example, Downlink Control Information (DCI) including scheduling information for at least one of the PDSCH and the PUSCH.
[0265] Note that the DCI for scheduling the PDSCH may be referred to as a DL assignment, a DL DCI, etc., and the DCI for scheduling the PUSCH may be referred to as a UL grant, a UL DCI, etc. Note that the PDSCH may be replaced with DL data, and the PUSCH may be replaced with UL data.
[0266] A control resource set (CORESET) and a search space may be used to detect the PDCCH. The CORESET corresponds to resources for searching for DCI. The search space corresponds to a search region and a search method for PDCCH candidates. One CORESET may be associated with one or more search spaces. The UE may monitor the CORESET associated with a certain search space based on the search space configuration.
[0267] One search space may correspond to PDCCH candidates corresponding to one or more aggregation levels. One or more search spaces may be referred to as a search space set. Note that the terms "search space," "search space set," "search space configuration," "search space set configuration," "CORESET," "CORESET configuration," and the like in the present disclosure may be read interchangeably.
[0268] The PUCCH may transmit uplink control information (UCI) including at least one of channel state information (CSI), delivery confirmation information (which may be called, for example, Hybrid Automatic Repeat reQuest ACKnowledgement (HARQ-ACK), ACK / NACK, etc.), and scheduling request (SR). The PRACH may transmit a random access preamble for establishing a connection with a cell.
[0269] In the present disclosure, downlink, uplink, etc. may be expressed without adding "link." Also, various channels may be expressed without adding "Physical" to the beginning.
[0270] In the wireless communication system 1, a synchronization signal (SS), a downlink reference signal (DL-RS), etc. may be transmitted. In the wireless communication system 1, as the DL-RS, a cell-specific reference signal (CRS), a channel state information reference signal (CSI-RS), a demodulation reference signal (DMRS), a positioning reference signal (PRS), a phase tracking reference signal (PTRS), etc. may be transmitted.
[0271] The synchronization signal may be, for example, at least one of a Primary Synchronization Signal (PSS) and a Secondary Synchronization Signal (SSS). A signal block including an SS (PSS, SSS) and a PBCH (and a DMRS for the PBCH) may be referred to as an SS / PBCH block, an SS Block (SSB), or the like. Note that the SS, SSB, and the like may also be referred to as a reference signal.
[0272] Furthermore, in the wireless communication system 1, a sounding reference signal (SRS), a demodulation reference signal (DMRS), or the like may be transmitted as an uplink reference signal (UL-RS). Note that the DMRS may also be called a user equipment-specific reference signal (UE-specific reference signal).
[0273] 24 is a diagram showing an example of the configuration of a base station according to an embodiment. The base station 10 includes a control unit 110, a transceiver unit 120, a transceiver antenna 130, and a transmission line interface 140. Note that the base station may include one or more of each of the control unit 110, the transceiver unit 120, the transceiver antenna 130, and the transmission line interface 140.
[0274] In this example, the functional blocks of the characteristic parts of the present embodiment are mainly shown, and it may be assumed that the base station 10 also has other functional blocks necessary for wireless communication. Some of the processing of each unit described below may be omitted.
[0275] The control unit 110 performs overall control of the base station 10. The control unit 110 can be configured from a controller, a control circuit, and the like that are explained based on common understanding in the technical field to which the present disclosure relates.
[0276] The control unit 110 may control signal generation, scheduling (e.g., resource allocation, mapping), etc. The control unit 110 may control transmission and reception using the transceiver unit 120, the transceiver antenna 130, and the transmission path interface 140, measurement, etc. The control unit 110 may generate data, control information, sequences, etc. to be transmitted as signals, and transfer them to the transceiver unit 120. The control unit 110 may perform call processing (setting up, releasing, etc.) of communication channels, status management of the base station 10, management of radio resources, etc.
[0277] The transceiver unit 120 may include a baseband unit 121, a radio frequency (RF) unit 122, and a measurement unit 123. The baseband unit 121 may include a transmission processing unit 1211 and a reception processing unit 1212. The transceiver unit 120 may be configured with a transmitter / receiver, an RF circuit, a baseband circuit, a filter, a phase shifter, a measurement circuit, a transceiver circuit, etc., which are described based on common understanding in the technical field related to the present disclosure.
[0278] The transmitting / receiving unit 120 may be configured as an integrated transmitting / receiving unit, or may be configured from a transmitting unit and a receiving unit. The transmitting unit may be configured from a transmission processing unit 1211 and an RF unit 122. The receiving unit may be configured from a reception processing unit 1212, the RF unit 122, and a measurement unit 123.
[0279] The transmitting and receiving antenna 130 can be configured from an antenna described based on common understanding in the technical field to which the present disclosure relates, such as an array antenna.
[0280] The transceiver 120 may transmit the above-mentioned downlink channel, synchronization signal, downlink reference signal, etc. The transceiver 120 may receive the above-mentioned uplink channel, uplink reference signal, etc.
[0281] The transceiver 120 may form at least one of the transmit beam and the receive beam using digital beamforming (e.g., precoding), analog beamforming (e.g., phase rotation), or the like.
[0282] The transmitter / receiver unit 120 (transmission processing unit 1211) may perform Packet Data Convergence Protocol (PDCP) layer processing, Radio Link Control (RLC) layer processing (e.g., RLC retransmission control), Medium Access Control (MAC) layer processing (e.g., HARQ retransmission control), etc. on data, control information, etc. obtained from the control unit 110, and generate a bit string to be transmitted.
[0283] The transmitter / receiver unit 120 (transmission processing unit 1211) may perform transmission processing such as channel coding (which may include error correction coding), modulation, mapping, filtering, Discrete Fourier Transform (DFT) processing (if necessary), Inverse Fast Fourier Transform (IFFT) processing, precoding, and digital-to-analog conversion on the bit string to be transmitted, and output a baseband signal.
[0284] The transceiver unit 120 (RF unit 122) may perform modulation, filtering, amplification, etc. on the baseband signal to a radio frequency band, and transmit the radio frequency band signal via the transceiver antenna 130.
[0285] On the other hand, the transceiver unit 120 (RF unit 122) may perform amplification, filtering, demodulation to a baseband signal, etc. on the radio frequency band signal received by the transceiver antenna 130.
[0286] The transceiver 120 (reception processing unit 1212) may apply reception processing such as analog-to-digital conversion, Fast Fourier Transform (FFT) processing, Inverse Discrete Fourier Transform (IDFT) processing (if necessary), filtering, demapping, demodulation, decoding (which may include error correction decoding), MAC layer processing, RLC layer processing, and PDCP layer processing to the acquired baseband signal, thereby acquiring user data, etc.
[0287] The transceiver 120 (measurement unit 123) may perform measurements on the received signal. For example, the measurement unit 123 may perform Radio Resource Management (RRM) measurements, Channel State Information (CSI) measurements, etc. based on the received signal. The measurement unit 123 may measure received power (e.g., Reference Signal Received Power (RSRP)), received quality (e.g., Reference Signal Received Quality (RSRQ), Signal to Interference plus Noise Ratio (SINR), Signal to Noise Ratio (SNR)), signal strength (e.g., Received Signal Strength Indicator (RSSI)), propagation path information (e.g., CSI), etc. The measurement results may be output to the control unit 110.
[0288] The transmission path interface 140 may transmit and receive signals (backhaul signaling) between devices included in the core network 30 (e.g., network nodes that provide NF), other base stations 10, etc., and may acquire and transmit user data (user plane data), control plane data, etc. for the user terminal 20.
[0289] The transmitting section and receiving section of the base station 10 in the present disclosure may be configured by at least one of the transmitting / receiving section 120, the transmitting / receiving antenna 130, and the transmission path interface 140.
[0290] The base station 10 may be separated into three elements: a radio unit (RU), a distributed unit (DU), and a central unit (CU). For example, the RU may implement RF processing (digital beamforming, digital-to-analog conversion, analog beamforming, etc.) and lower-level functions of the physical layer (precoding, IFFT, FFT, etc.). The DU may implement higher-level functions of the physical layer (coding to resource element mapping, etc.), MAC layer functions, and RLC layer functions. The CU may implement the functions of the PDCP layer, Service Data Adaptation Protocol (SDAP) layer, and RRC layer.
[0291] In the present disclosure, the base station 10 may include a single device that realizes all of the functions of the RU, DU, and CU, or may include multiple devices that each realize some of the functions of the RU, DU, and CU and are connected to each other. In the present disclosure, the base station 10 may be interchangeably read as RU / DU / CU.
[0292] The transceiver 120 may transmit configuration information regarding the duration of a plurality of sensing resources in one sensing burst, and the controller 110 may control transmission / reception of the sensing resources based on the configuration information.
[0293] The transceiver 120 may transmit configuration information regarding a plurality of sensing resources having a uniform or non-uniform resource pattern in one sensing burst, and the controller 110 may control transmission / reception of the sensing resources based on the configuration information.
[0294] (User terminal) Fig. 25 is a diagram showing an example of the configuration of a user terminal according to one embodiment. The user terminal 20 includes a control unit 210, a transceiver unit 220, and a transceiver antenna 230. Note that the user terminal 20 may include one or more of each of the control unit 210, the transceiver unit 220, and the transceiver antenna 230.
[0295] In this example, the functional blocks of the characteristic parts of the present embodiment are mainly shown, and it may be assumed that the user terminal 20 also has other functional blocks necessary for wireless communication. Some of the processing of each unit described below may be omitted.
[0296] The control unit 210 performs overall control of the user terminal 20. The control unit 210 can be configured from a controller, a control circuit, etc., which are described based on common understanding in the technical field to which the present disclosure relates.
[0297] The control unit 210 may control signal generation, mapping, etc. The control unit 210 may control transmission and reception, measurement, etc. using the transceiver unit 220 and the transceiver antenna 230. The control unit 210 may generate data, control information, sequences, etc. to be transmitted as signals and transfer them to the transceiver unit 220.
[0298] The transceiver unit 220 may include a baseband unit 221, an RF unit 222, and a measurement unit 223. The baseband unit 221 may include a transmission processing unit 2211 and a reception processing unit 2212. The transceiver unit 220 may be configured with a transmitter / receiver, an RF circuit, a baseband circuit, a filter, a phase shifter, a measurement circuit, a transceiver circuit, etc., which are described based on common understanding in the technical field related to the present disclosure.
[0299] The transmitting / receiving unit 220 may be configured as an integrated transmitting / receiving unit, or may be composed of a transmitting unit and a receiving unit. The transmitting unit may be composed of a transmission processing unit 2211 and an RF unit 222. The receiving unit may be composed of a reception processing unit 2212, an RF unit 222, and a measurement unit 223.
[0300] The transmitting / receiving antenna 230 can be configured from an antenna described based on common understanding in the technical field to which the present disclosure relates, such as an array antenna.
[0301] The transceiver 220 may receive the above-mentioned downlink channel, synchronization signal, downlink reference signal, etc. The transceiver 220 may transmit the above-mentioned uplink channel, uplink reference signal, etc.
[0302] The transceiver unit 220 may form at least one of the transmit beam and the receive beam using digital beamforming (e.g., precoding), analog beamforming (e.g., phase rotation), or the like.
[0303] The transceiver unit 220 (transmission processing unit 2211) may perform PDCP layer processing, RLC layer processing (e.g., RLC retransmission control), MAC layer processing (e.g., HARQ retransmission control), etc. on data, control information, etc. obtained from the control unit 210, and generate a bit string to be transmitted.
[0304] The transmitter / receiver unit 220 (transmission processing unit 2211) may perform transmission processing such as channel coding (which may include error correction coding), modulation, mapping, filtering, DFT processing (if necessary), IFFT processing, precoding, and digital-to-analog conversion on the bit string to be transmitted, and output a baseband signal.
[0305] Whether or not to apply DFT processing may be based on the setting of transform precoding. When transform precoding is enabled for a certain channel (e.g., PUSCH), the transceiver unit 220 (transmission processing unit 2211) may perform DFT processing as the transmission processing to transmit the channel using a DFT-s-OFDM waveform, and if not, it may not be necessary to perform DFT processing as the transmission processing.
[0306] The transceiver unit 220 (RF unit 222) may perform modulation, filtering, amplification, etc. on the baseband signal to a radio frequency band, and transmit the radio frequency band signal via the transceiver antenna 230.
[0307] On the other hand, the transceiver unit 220 (RF unit 222) may perform amplification, filtering, demodulation to a baseband signal, etc. on the radio frequency band signal received by the transceiver antenna 230.
[0308] The transceiver unit 220 (reception processing unit 2212) may apply reception processing such as analog-to-digital conversion, FFT processing, IDFT processing (if necessary), filtering, demapping, demodulation, decoding (which may include error correction decoding), MAC layer processing, RLC layer processing, and PDCP layer processing to the acquired baseband signal, and acquire user data, etc.
[0309] The transceiver 220 (measurement unit 223) may perform measurements on the received signal. For example, the measurement unit 223 may perform RRM measurements, CSI measurements, etc. based on the received signal. The measurement unit 223 may measure received power (e.g., RSRP), received quality (e.g., RSRQ, SINR, SNR), signal strength (e.g., RSSI), propagation path information (e.g., CSI), etc. The measurement results may be output to the control unit 210.
[0310] The measurement unit 223 may derive channel measurements for CSI calculation based on the channel measurement resources. The channel measurement resources may be, for example, non-zero power (NZP) CSI-RS resources. The measurement unit 223 may also derive interference measurements for CSI calculation based on the interference measurement resources. The interference measurement resources may be at least one of an NZP CSI-RS resource for interference measurement, a CSI-Interference Measurement (IM) resource, etc. Note that CSI-IM may be referred to as CSI-Interference Management (IM) or may be interchangeably read as Zero Power (ZP) CSI-RS. Note that in the present disclosure, CSI-RS, NZP CSI-RS, ZP CSI-RS, CSI-IM, CSI-SSB, etc. may be interchangeably read as interchangeable.
[0311] The transmitting unit and receiving unit of the user terminal 20 in the present disclosure may be configured by at least one of the transmitting / receiving unit 220 and the transmitting / receiving antenna 230.
[0312] The transceiver unit 220 may perform at least part of the processing of the transmitter / receiver unit described in the above appendix.
[0313] The control unit 210 may perform at least some of the processing of the control unit described in the above-mentioned supplementary notes.
[0314] (Hardware Configuration) Note that the block diagrams used to explain the above embodiments show functional blocks. These functional blocks (components) are realized by any combination of at least one of hardware and software. Furthermore, the method for realizing each functional block is not particularly limited. That is, each functional block may be realized using a single device that is physically or logically coupled, or may be realized using two or more physically or logically separated devices that are directly or indirectly connected (for example, using wires, wirelessly, etc.) and these multiple devices. The functional block may be realized by combining software with the single device or the multiple devices.
[0315] Here, the functions include, but are not limited to, judgment, determination, judgment, calculation, computation, processing, derivation, investigation, search, confirmation, reception, transmission, output, access, resolution, selection, election, establishment, comparison, assumption, expectation, deeming, broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, and assignment. For example, a functional block (component) that performs transmission may be called a transmitting unit, transmitter, etc. As described above, the implementation method of each is not particularly limited.
[0316] For example, a base station, a user terminal, etc. according to an embodiment of the present disclosure may function as a computer that performs processing of the wireless communication method of the present disclosure. Figure 26 is a diagram illustrating an example of the hardware configuration of a base station and a user terminal according to an embodiment. The above-described base station 10 and user terminal 20 may be physically configured as a computer device including a processor 1001, a memory 1002, a storage 1003, a communication device 1004, an input device 1005, an output device 1006, a bus 1007, etc.
[0317] In the present disclosure, the terms apparatus, circuit, device, section, unit, etc. may be used interchangeably. The hardware configurations of the base station 10 and the user terminal 20 may be configured to include one or more of the devices shown in the drawings, or may be configured to exclude some of the devices.
[0318] For example, although only one processor 1001 is shown, there may be multiple processors. Furthermore, processing may be performed by one processor, or processing may be performed by two or more processors simultaneously, serially, or in other ways. Furthermore, processor 1001 may be implemented by one or more chips.
[0319] Each function in the base station 10 and the user terminal 20 is realized, for example, by loading specified software (programs) onto hardware such as a processor 1001 and a memory 1002, causing the processor 1001 to perform calculations, control communication via the communication device 1004, and control at least one of reading and writing data in the memory 1002 and the storage 1003.
[0320] The processor 1001, for example, runs an operating system to control the entire computer. The processor 1001 may be configured as a central processing unit (CPU) including an interface with peripheral devices, a control device, an arithmetic unit, a register, etc. For example, at least a part of the above-mentioned control unit 110 (210), transceiver unit 120 (220), etc. may be realized by the processor 1001.
[0321] The processor 1001 also reads programs (program codes), software modules, data, etc. from at least one of the storage 1003 and the communication device 1004 into the memory 1002 and executes various processes in accordance with these. The programs used are those that cause a computer to execute at least some of the operations described in the above-described embodiments. For example, the control unit 110 (210) may be implemented by a control program stored in the memory 1002 and running on the processor 1001, and the other functional blocks may be implemented in a similar manner.
[0322] The memory 1002 is a computer-readable recording medium and may be configured by at least one of, for example, Read Only Memory (ROM), Erasable Programmable ROM (EPROM), Electrically EEPROM (EEPROM), Random Access Memory (RAM), or other suitable storage medium. The memory 1002 may also be referred to as a register, cache, main memory, etc. The memory 1002 may store executable programs (program codes), software modules, etc. for implementing a wireless communication method according to an embodiment of the present disclosure.
[0323] Storage 1003 is a computer-readable recording medium and may be composed of at least one of, for example, a flexible disk, a floppy disk, a magneto-optical disk (e.g., a compact disc (e.g., a Compact Disc ROM (CD-ROM)), a digital versatile disc, a Blu-ray disc), a removable disk, a hard disk drive, a smart card, a flash memory device (e.g., a card, a stick, a key drive), a magnetic stripe, a database, a server, or other suitable storage medium. Storage 1003 may also be referred to as an auxiliary storage device.
[0324] The communication device 1004 is hardware (transmission / reception device) for communicating between computers via at least one of a wired network and a wireless network, and is also referred to as, for example, a network device, a network controller, a network card, or a communication module. The communication device 1004 may be configured to include a high-frequency switch, a duplexer, a filter, a frequency synthesizer, etc. to realize at least one of frequency division duplex (FDD) and time division duplex (TDD). For example, the above-mentioned transmission / reception unit 120 (220), transmission / reception antenna 130 (230), etc. may be realized by the communication device 1004. The transmission / reception unit 120 (220) may be implemented as a transmission unit 120a (220a) and a reception unit 120b (220b) that are physically or logically separated.
[0325] The input device 1005 is an input device (e.g., a keyboard, a mouse, a microphone, a switch, a button, a sensor, etc.) that accepts input from the outside. The output device 1006 is an output device (e.g., a display, a speaker, a light emitting diode (LED) lamp, etc.) that outputs to the outside. Note that the input device 1005 and the output device 1006 may be integrated into one device (e.g., a touch panel).
[0326] Furthermore, each device, such as the processor 1001 and the memory 1002, is connected by a bus 1007 for communicating information. The bus 1007 may be configured using a single bus, or may be configured using different buses between each device.
[0327] Furthermore, the base station 10 and the user terminal 20 may be configured to include hardware such as a microprocessor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a programmable logic device (PLD), or a field programmable gate array (FPGA), and some or all of the functional blocks may be realized using this hardware. For example, the processor 1001 may be implemented using at least one of these pieces of hardware.
[0328] In addition, the devices included in the core network 30 (for example, network nodes that provide NF) may also be realized by the above-mentioned functional block / hardware configuration.
[0329] (Modifications) Note that terms described in the present disclosure and terms necessary for understanding the present disclosure may be replaced with terms having the same or similar meanings. For example, a channel, a symbol, and a signal (signal or signaling) may be interchangeable. A signal may also be a message. A reference signal may be abbreviated as RS, and may also be called a pilot, pilot signal, etc. depending on the applicable standard. A component carrier (CC) may also be called a cell, frequency carrier, carrier frequency, etc.
[0330] A radio frame may be composed of one or more periods (frames) in the time domain. Each of the one or more periods (frames) constituting a radio frame may be called a subframe. Furthermore, a subframe may be composed of one or more slots in the time domain. A subframe may have a fixed time length (e.g., 1 ms) that is independent of numerology.
[0331] Here, the numerology may be a communication parameter applied to at least one of transmission and reception of a signal or channel, and may indicate at least one of, for example, Subcarrier Spacing (SCS), bandwidth, symbol length, cyclic prefix length, Transmission Time Interval (TTI), number of symbols per TTI, radio frame structure, specific filtering performed by a transceiver in the frequency domain, and specific windowing performed by a transceiver in the time domain.
[0332] A slot may be composed of one or more symbols (such as an Orthogonal Frequency Division Multiplexing (OFDM) symbol or a Single Carrier Frequency Division Multiple Access (SC-FDMA) symbol) in the time domain. A slot may also be a time unit based on numerology.
[0333] A slot may include multiple minislots. Each minislot may consist of one or multiple symbols in the time domain. A minislot may also be called a subslot. A minislot may consist of fewer symbols than a slot. A PDSCH (or PUSCH) transmitted in a time unit larger than a minislot may be called PDSCH (PUSCH) mapping type A. A PDSCH (or PUSCH) transmitted using a minislot may be called PDSCH (PUSCH) mapping type B.
[0334] A radio frame, a subframe, a slot, a minislot, and a symbol all represent time units for transmitting signals. The radio frame, the subframe, the slot, the minislot, and the symbol may be referred to by other names corresponding to the radio frame, the subframe, the slot, the minislot, and the symbol. Note that the time units such as a frame, a subframe, a slot, a minislot, and a symbol in the present disclosure may be interchangeable.
[0335] For example, one subframe may be referred to as a TTI, or multiple consecutive subframes may be referred to as a TTI, or one slot or one minislot may be referred to as a TTI. That is, at least one of the subframe and the TTI may be a subframe (1 ms) in existing LTE, a period shorter than 1 ms (for example, 1-13 symbols), or a period longer than 1 ms. Note that the unit representing the TTI may be called a slot, minislot, etc. instead of a subframe.
[0336] Here, TTI refers to, for example, the smallest time unit for scheduling in wireless communication. For example, in an LTE system, a base station performs scheduling to allocate radio resources (such as frequency bandwidth and transmission power that can be used by each user terminal) to each user terminal in TTI units. Note that the definition of TTI is not limited to this.
[0337] The TTI may be a transmission time unit for a channel-encoded data packet (transport block), a code block, a code word, etc., or may be a processing unit for scheduling, link adaptation, etc. When a TTI is given, the time interval (e.g., the number of symbols) to which a transport block, a code block, a code word, etc. is actually mapped may be shorter than the TTI.
[0338] When one slot or one minislot is called a TTI, one or more TTIs (i.e., one or more slots or one or more minislots) may be the minimum time unit for scheduling. Also, the number of slots (minislots) constituting the minimum time unit for scheduling may be controlled.
[0339] A TTI having a time length of 1 ms may be called a regular TTI (TTI in 3GPP Rel. 8-12), normal TTI, long TTI, regular subframe, normal subframe, long subframe, slot, etc. A TTI shorter than a regular TTI may be called a shortened TTI, short TTI, partial or fractional TTI, shortened subframe, short subframe, minislot, subslot, slot, etc.
[0340] In addition, a long TTI (e.g., a normal TTI, a subframe, etc.) may be interpreted as a TTI having a time length of more than 1 ms, and a short TTI (e.g., a shortened TTI, etc.) may be interpreted as a TTI having a TTI length shorter than the TTI length of a long TTI and greater than or equal to 1 ms.
[0341] A resource block (RB) is a resource allocation unit in the time domain and the frequency domain, and may include one or more consecutive subcarriers in the frequency domain. The number of subcarriers included in an RB may be the same regardless of numerology, for example, 12. The number of subcarriers included in an RB may be determined based on numerology.
[0342] In addition, an RB may include one or more symbols in the time domain and may have a length of one slot, one minislot, one subframe, or one TTI, each of which may be composed of one or more resource blocks.
[0343] In addition, one or more RBs may be referred to as a physical resource block (PRB), a sub-carrier group (SCG), a resource element group (REG), a PRB pair, an RB pair, etc.
[0344] Furthermore, a resource block may be composed of one or more resource elements (REs). For example, one RE may be a radio resource region of one subcarrier and one symbol.
[0345] A Bandwidth Part (BWP), which may also be referred to as a partial bandwidth, may represent a subset of contiguous common resource blocks (RBs) for a given numerology on a given carrier, where the common RBs may be identified by their index relative to a Common Reference Point of the carrier. PRBs may be defined in a BWP and numbered within the BWP.
[0346] The BWP may include a UL BWP (BWP for UL) and a DL BWP (BWP for DL). One or more BWPs may be configured for a UE within one carrier.
[0347] At least one of the configured BWPs may be active, and the UE may not expect to transmit or receive a given signal / channel outside the active BWP. Note that the terms "cell," "carrier," etc. in this disclosure may be read as "BWP."
[0348] The above-described structures of radio frames, subframes, slots, minislots, symbols, etc. are merely examples. For example, the number of subframes included in a radio frame, the number of slots per subframe or radio frame, the number of minislots included in a slot, the number of symbols and RBs included in a slot or minislot, the number of subcarriers included in an RB, the number of symbols in a TTI, the symbol length, the cyclic prefix (CP) length, etc. may be changed in various ways.
[0349] Furthermore, the information, parameters, etc. described in the present disclosure may be expressed using absolute values, may be expressed using relative values from a predetermined value, or may be expressed using other corresponding information. For example, a radio resource may be indicated by a predetermined index.
[0350] The names used for parameters and the like in this disclosure are not intended to be limiting in any way. Furthermore, the mathematical expressions and the like using these parameters may differ from those explicitly disclosed in this disclosure. The various channels (PUCCH, PDCCH, etc.) and information elements may be identified by any suitable names, and therefore the various names assigned to these various channels and information elements are not intended to be limiting in any way.
[0351] The information, signals, etc. described in this disclosure may be represented using any of a variety of different technologies. For example, data, instructions, commands, information, signals, bits, symbols, chips, etc. that may be referred to throughout the above description may be represented by voltages, currents, electromagnetic waves, magnetic fields or magnetic particles, optical fields or photons, or any combination thereof.
[0352] Furthermore, information, signals, etc. may be output from a higher layer to a lower layer and / or from a lower layer to a higher layer. Information, signals, etc. may be input / output via multiple network nodes.
[0353] Input and output information, signals, etc. may be stored in a specific location (for example, memory) or may be managed using a management table. Input and output information, signals, etc. may be overwritten, updated, or added. Output information, signals, etc. may be deleted. Input information, signals, etc. may be transmitted to another device.
[0354] With respect to any information (e.g., variables, constants, parameters) described in the present disclosure, even if not specifically stated in the above embodiments, any first device (e.g., UE / base station) may notify any second device (e.g., base station / UE) of information indicating / specifying (or relating to) the value of the any information.
[0355] The notification of information is not limited to the aspects / embodiments described in the present disclosure, and may be performed using other methods. For example, the notification of information in the present disclosure may be performed by physical layer signaling (e.g., Downlink Control Information (DCI) and Uplink Control Information (UCI)), higher layer signaling (e.g., Radio Resource Control (RRC) signaling, broadcast information (Master Information Block (MIB) and System Information Block (SIB)), Medium Access Control (MAC) signaling), other signals, or a combination thereof.
[0356] Note that the physical layer signaling may be referred to as Layer 1 / Layer 2 (L1 / L2) control information (L1 / L2 control signal), L1 control information (L1 control signal), etc. Furthermore, the RRC signaling may be referred to as an RRC message, such as an RRC Connection Setup message or an RRC Connection Reconfiguration message. Furthermore, the MAC signaling may be notified using, for example, a MAC Control Element (CE).
[0357] Furthermore, notification of specified information (e.g., notification that "it is X") is not limited to explicit notification, but may be made implicitly (e.g., by not notifying the specified information or by notifying other information).
[0358] The determination may be made by a value represented by one bit (0 or 1), by a Boolean value represented by true or false, or by a comparison of numerical values (e.g., comparison with a predetermined value).
[0359] Software shall be construed broadly to mean instructions, instruction sets, code, code segments, program code, programs, subprograms, software modules, applications, software applications, software packages, routines, subroutines, objects, executable files, threads of execution, procedures, functions, etc., whether referred to as software, firmware, middleware, microcode, hardware description language, or otherwise.
[0360] Software, instructions, information, etc. may also be transmitted or received over a transmission medium. For example, if software is transmitted from a website, server, or other remote source using wired technologies (such as coaxial cable, fiber optic cable, twisted pair, Digital Subscriber Line (DSL)), and / or wireless technologies (such as infrared, microwave), these wired and / or wireless technologies are included within the definition of transmission media.
[0361] As used in this disclosure, the terms "system" and "network" may be used interchangeably. A "network" may refer to devices included in the network (e.g., base stations).
[0362] In this disclosure, terms such as "precoding," "precoder," "weight (precoding weight)," "Quasi-Co-Location (QCL)," "Transmission Configuration Indication state (TCI state)," "spatial relation," "spatial domain filter," "transmit power," "phase rotation," "antenna port," "layer," "number of layers," "rank," "resource," "resource set," "beam," "beam width," "beam angle," "antenna," "antenna element," "panel," "UE panel," "transmitting entity," "receiving entity," etc. may be used interchangeably.
[0363] In the present disclosure, the term "antenna port" may be interchangeably read as an antenna port for any signal / channel (e.g., a demodulation reference signal (DMRS) port). In the present disclosure, the term "resource" may be interchangeably read as a resource for any signal / channel (e.g., a reference signal resource, an SRS resource, etc.). The resource may include time / frequency / code / space / power resources. Furthermore, the spatial domain transmission filter may include at least one of a spatial domain transmission filter and a spatial domain reception filter.
[0364] The group may include, for example, at least one of a spatial relationship group, a Code Division Multiplexing (CDM) group, a Reference Signal (RS) group, a Control Resource Set (CORESET) group, a PUCCH group, an antenna port group (e.g., a DMRS port group), a layer group, a resource group, a beam group, an antenna group, a panel group, and the like.
[0365] In addition, in the present disclosure, beam, SRS Resource Indicator (SRI), CORESET, CORESET pool, PDSCH, PUSCH, codeword (CW), transport block (TB), RS, etc. may be read as interchangeable terms.
[0366] In addition, in the present disclosure, the terms TCI state, downlink TCI state (DL TCI state), uplink TCI state (UL TCI state), unified TCI state, common TCI state, joint TCI state, etc. may be read interchangeably.
[0367] Furthermore, in the present disclosure, terms such as "QCL," "QCL assumption," "QCL relationship," "QCL type information," "QCL property / properties," "specific QCL type (e.g., Type A, Type D) property," and "specific QCL type (e.g., Type A, Type D)" may be interchangeable.
[0368] In the present disclosure, terms such as index, identifier (ID), indicator, indication, and resource ID may be interchangeable. In the present disclosure, terms such as sequence, list, set, group, cluster, and subset may be interchangeable.
[0369] Furthermore, the spatial relationship information identifier (ID) (TCI state ID) and the spatial relationship information (TCI state) may be interchangeable. The "spatial relationship information (TCI state)" may be interchangeable with "set of spatial relationship information (TCI state)", "one or more pieces of spatial relationship information", etc. The TCI state and the TCI may be interchangeable. The spatial relationship information and the spatial relationship may be interchangeable.
[0370] In the present disclosure, terms such as "base station (BS)," "radio base station," "fixed station," "NodeB," "eNB (eNodeB)," "gNB (gNodeB)," "access point," "transmission point (TP)," "reception point (RP)," "transmission / reception point (TRP)," "panel," "cell," "sector," "cell group," "carrier," "component carrier," etc. may be used interchangeably. Base stations may also be referred to by terms such as macrocell, small cell, femtocell, picocell, etc.
[0371] A base station can accommodate one or more (e.g., three) cells. When a base station accommodates multiple cells, the overall coverage area of the base station can be partitioned into multiple smaller areas, and each smaller area can be provided with communication service by a base station subsystem (e.g., a small indoor base station (Remote Radio Head (RRH))). The terms "cell" or "sector" refer to part or all of the coverage area of a base station and / or base station subsystem that provides communication service within that coverage.
[0372] In the present disclosure, a base station transmitting information to a terminal may be interpreted as the base station instructing the terminal to control / operate based on the information.
[0373] In this disclosure, the terms "Mobile Station (MS)," "user terminal," "User Equipment (UE)," "terminal," etc. may be used interchangeably.
[0374] A mobile station may also be referred to as a subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client, or some other suitable terminology.
[0375] At least one of the base station and the mobile station may be called a transmitting device, a receiving device, a wireless communication device, etc. Note that at least one of the base station and the mobile station may be a device mounted on a moving object, the moving object itself, etc.
[0376] The mobile body is a movable object that can move at any speed and naturally includes cases where the mobile body is stationary. Examples of the mobile body include, but are not limited to, vehicles, transport vehicles, automobiles, motorcycles, bicycles, connected cars, excavators, bulldozers, wheel loaders, dump trucks, forklifts, trains, buses, handcars, rickshaws, ships and other watercraft, airplanes, rockets, satellites, drones, multicopters, quadcopters, balloons, and objects mounted thereon. The mobile body may also be a mobile body that moves autonomously based on an operation command.
[0377] The mobile object may be a vehicle (e.g., a car, an airplane, etc.), an unmanned mobile object (e.g., a drone, an autonomous vehicle, etc.), or a robot (manned or unmanned). Note that at least one of the base station and the mobile station may also include devices that do not necessarily move during communication operations. For example, at least one of the base station and the mobile station may be an Internet of Things (IoT) device such as a sensor.
[0378] 27 is a diagram showing an example of a vehicle according to an embodiment. The vehicle 40 includes a drive unit 41, a steering unit 42, an accelerator pedal 43, a brake pedal 44, a shift lever 45, left and right front wheels 46, left and right rear wheels 47, axles 48, an electronic control unit 49, various sensors (including a current sensor 50, an RPM sensor 51, an air pressure sensor 52, a vehicle speed sensor 53, an acceleration sensor 54, an accelerator pedal sensor 55, a brake pedal sensor 56, a shift lever sensor 57, and an object detection sensor 58), an information service unit 59, and a communication module 60.
[0379] The drive unit 41 is configured with at least one of an engine, a motor, and a hybrid of an engine and a motor, for example. The steering unit 42 includes at least a steering wheel (also called a handle) and is configured to steer at least one of the front wheels 46 and the rear wheels 47 based on the operation of the steering wheel operated by a user.
[0380] The electronic control unit 49 is composed of a microprocessor 61, memory (ROM, RAM) 62, and a communication port (for example, an input / output (IO) port) 63. Signals are input to the electronic control unit 49 from various sensors 50-58 provided in the vehicle. The electronic control unit 49 may also be called an Electronic Control Unit (ECU).
[0381] The signals from the various sensors 50-58 include a current signal from a current sensor 50 that senses the current of the motor, a rotation speed signal of the front wheels 46 / rear wheels 47 obtained by a rotation speed sensor 51, an air pressure signal of the front wheels 46 / rear wheels 47 obtained by an air pressure sensor 52, a vehicle speed signal obtained by a vehicle speed sensor 53, an acceleration signal obtained by an acceleration sensor 54, a depression amount signal of the accelerator pedal 43 obtained by an accelerator pedal sensor 55, a depression amount signal of the brake pedal 44 obtained by a brake pedal sensor 56, an operation signal of the shift lever 45 obtained by a shift lever sensor 57, and a detection signal for detecting obstacles, vehicles, pedestrians, etc. obtained by an object detection sensor 58.
[0382] The information service unit 59 is composed of various devices, such as a car navigation system, an audio system, speakers, a display, a television, and a radio, for providing (outputting) various information such as driving information, traffic information, and entertainment information, and one or more ECUs for controlling these devices. The information service unit 59 uses information acquired from external devices via the communication module 60 or the like to provide various information / services (e.g., multimedia information / multimedia services) to the occupants of the vehicle 40.
[0383] The information service unit 59 may include input devices (e.g., keyboards, mice, microphones, switches, buttons, sensors, touch panels, etc.) that accept input from the outside, and may also include output devices (e.g., displays, speakers, LED lamps, touch panels, etc.) that output to the outside.
[0384] The driving assistance system unit 64 includes various devices for providing functions to prevent accidents and reduce the driver's driving burden, such as millimeter-wave radar, Light Detection and Ranging (LiDAR), cameras, positioning locators (e.g., Global Navigation Satellite System (GNSS)), map information (e.g., High Definition (HD) maps, Autonomous Vehicle (AV) maps), gyro systems (e.g., Inertial Measurement Units (IMUs), Inertial Navigation Systems (INSs)), artificial intelligence (AI) chips, and AI processors, as well as one or more ECUs that control these devices. The driving assistance system unit 64 also transmits and receives various information via the communication module 60 to realize driving assistance functions or autonomous driving functions.
[0385] The communication module 60 can communicate with the microprocessor 61 and components of the vehicle 40 via the communication port 63. For example, the communication module 60 transmits and receives data (information) via the communication port 63 to and from the drive unit 41, steering unit 42, accelerator pedal 43, brake pedal 44, shift lever 45, left and right front wheels 46, left and right rear wheels 47, axles 48, the microprocessor 61 and memory (ROM, RAM) 62 in the electronic control unit 49, and the various sensors 50-58, which are provided in the vehicle 40.
[0386] The communication module 60 is a communication device that can be controlled by the microprocessor 61 of the electronic control unit 49 and can communicate with an external device. For example, it transmits and receives various information to and from the external device via wireless communication. The communication module 60 may be located either inside or outside the electronic control unit 49. The external device may be, for example, the base station 10 or the user terminal 20 described above. Furthermore, the communication module 60 may be, for example, at least one of the base station 10 and the user terminal 20 described above (or may function as at least one of the base station 10 and the user terminal 20).
[0387] The communication module 60 may transmit at least one of signals from the above-mentioned various sensors 50-58 input to the electronic control unit 49, information obtained based on the signals, and information based on input from the outside (user) obtained via the information service unit 59 to an external device via wireless communication. The electronic control unit 49, the various sensors 50-58, the information service unit 59, etc. may be referred to as input units that accept input. For example, the PUSCH transmitted by the communication module 60 may include information based on the above-mentioned input.
[0388] The communication module 60 receives various information (traffic information, traffic signal information, vehicle distance information, etc.) transmitted from an external device and displays it on an information service unit 59 provided in the vehicle. The information service unit 59 may also be called an output unit that outputs information (for example, outputs information to a device such as a display or speaker based on the PDSCH received by the communication module 60 (or data / information decoded from the PDSCH)).
[0389] Furthermore, the communication module 60 stores various information received from external devices in a memory 62 that can be used by the microprocessor 61. Based on the information stored in the memory 62, the microprocessor 61 may control the drive unit 41, steering unit 42, accelerator pedal 43, brake pedal 44, shift lever 45, left and right front wheels 46, left and right rear wheels 47, axles 48, various sensors 50-58, and the like provided in the vehicle 40.
[0390] Furthermore, a base station in the present disclosure may be read as a user terminal. For example, the aspects / embodiments of the present disclosure may be applied to a configuration in which communication between a base station and a user terminal is replaced with communication between multiple user terminals (which may be called, for example, Device-to-Device (D2D) or Vehicle-to-Everything (V2X)). In this case, the user terminal 20 may be configured to have the functions of the base station 10 described above. Furthermore, terms such as "uplink" and "downlink" may be read as terms corresponding to terminal-to-terminal communication (for example, "sidelink"). For example, terms such as an uplink channel and a downlink channel may be read as a sidelink channel.
[0391] Similarly, the user terminal in the present disclosure may be read as a base station, in which case the base station 10 may be configured to have the functions of the user terminal 20 described above.
[0392] In the present disclosure, an operation described as being performed by a base station may be performed by its upper node in some cases. It is apparent that in a network including one or more network nodes having a base station, various operations performed for communication with a terminal may be performed by the base station, one or more network nodes other than the base station (such as, but not limited to, a Mobility Management Entity (MME), a Serving-Gateway (S-GW), etc.), or a combination thereof.
[0393] Each aspect / embodiment described in this disclosure may be used alone, in combination, or switched depending on the implementation. Furthermore, the order of the processing procedures, sequences, flowcharts, etc. of each aspect / embodiment described in this disclosure may be changed unless inconsistent. For example, the methods described in this disclosure present elements of various steps using an example order, and are not limited to the particular order presented.
[0394] Each aspect / embodiment described in the present disclosure may be a technology other than Long Term Evolution (LTE), LTE-Advanced (LTE-A), LTE-Beyond (LTE-B), SUPER 3G, IMT-Advanced, 4th generation mobile communication system (4G), 5th generation mobile communication system (5G), 6th generation mobile communication system (6G), xth generation mobile communication system (xG (x is, for example, an integer or decimal number)), Future Radio Access (FRA), New-Radio Access Technology (RAT), New Radio (NR), New radio access (NX), Future generation radio access (FX), Global System for Mobile communications (GSM (registered trademark)), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.17 (WiMAX (registered trademark)), IEEE 802.19 (WiMAX (registered trademark)), IEEE 802.20 (WiMAX (registered trademark)), IEEE 802.21 (Wi-Fi (registered trademark)), IEEE 802.22 (WiMAX (registered trademark)), IEEE 802.23 (WiMAX (registered trademark)), IEEE 802.24 (WiMAX (registered trademark)), IEEE 802.25 (WiMAX (registered trademark)), IEEE 802.26 (WiMAX (registered trademark)), IEEE 802.27 (WiMAX (registered trademark)), IEEE 802.28 (WiMAX (registered trademark)), IEEE 802.29 (WiMAX (registered trademark)), IEEE 802.30 (WiMAX (registered trademark)), IEEE 802.31 (Wi-Fi (registered trademark)), IEEE 802.32 (WiMAX (registered trademark)), IEEE 802.33 (WiMAX (registered trademark)), IEEE 802. The present invention may be applied to systems that use IEEE 802.20, Ultra-WideBand (UWB), Bluetooth (registered trademark), or other suitable wireless communication methods, or to next-generation systems that are expanded, modified, created, or defined based on these. Furthermore, the present invention may be applied to a combination of multiple systems (e.g., a combination of LTE or LTE-A and 5G).
[0395] As used in this disclosure, the phrase "based on" does not mean "based only on," unless expressly stated otherwise. In other words, the phrase "based on" means both "based only on" and "based at least on."
[0396] As used in this disclosure, any reference to an element using a designation such as "first," "second," etc. does not generally limit the quantity or order of those elements. These designations may be used in this disclosure as a convenient method of distinguishing between two or more elements. Thus, a reference to a first and a second element does not imply that only two elements may be employed or that the first element must in some way precede the second element.
[0397] The term "determining" as used in this disclosure may encompass a wide variety of actions. For example, "determining" may be considered to be judging, calculating, computing, processing, deriving, investigating, looking up, search, inquiry (e.g., looking up in a table, database, or another data structure), ascertaining, etc.
[0398] Additionally, "determining" may be considered to be "determining" receiving (e.g., receiving information), transmitting (e.g., sending information), input, output, accessing (e.g., accessing data in memory), etc.
[0399] Furthermore, "determination" may be considered to be "determining" resolving, selecting, choosing, establishing, comparing, etc. In other words, "determination" may be considered to be "determining" some kind of action. In the present disclosure, "determination" may be read interchangeably with the above-mentioned actions.
[0400] Furthermore, in this disclosure, "determine / determining" may be interchangeably read as "assume / assuming," "expect / expecting," "consider / considering," etc. Furthermore, in this disclosure, "does not expect to do..." may be interchangeably read as "assumes not to do...."
[0401] In the present disclosure, "expect" may be interchangeably read as "be expected." For example, "expect(s) ..." ("..." may be expressed, for example, as a that clause, a to-infinitive, etc.) may be interchangeably read as "be expected ..." or "do ... (if the above "..." is a to-infinitive, a verb with "to")," etc. "does not expect ..." may be interchangeably read as "be not expected ..." or "does not ... (if the above "..." is a to-infinitive, a verb with "to")," etc. Furthermore, "An apparatus A is not expected ..." may be interchangeably read as "an apparatus B other than apparatus A does not expect ... from apparatus A" (for example, if apparatus A is a UE, apparatus B may be a base station).
[0402] The "maximum transmit power" in this disclosure may mean the maximum value of transmit power, the nominal UE maximum transmit power, or the rated UE maximum transmit power.
[0403] As used in this disclosure, the terms "connected," "coupled," or any variation thereof, refer to any direct or indirect connection or coupling between two or more elements, and may include the presence of one or more intermediate elements between two elements that are "connected" or "coupled" to each other. The coupling or connection between elements may be physical, logical, or a combination thereof. For example, "connected" may be read as "access."
[0404] In this disclosure, when two elements are connected, they may be considered to be "connected" or "coupled" to one another using one or more wires, cables, printed electrical connections, etc., as well as using electromagnetic energy having wavelengths in the radio frequency range, microwave range, light (both visible and invisible) range, etc., as some non-limiting and non-exhaustive examples.
[0405] In the present disclosure, the term "A and B are different" may mean "A and B are different from each other." The term may also mean "A and B are each different from C." Terms such as "separate" and "coupled" may also be interpreted in the same way as "different."
[0406] When the terms "include," "including," and variations thereof are used in this disclosure, these terms are intended to be inclusive, similar to the term "comprising." Furthermore, when the term "or" is used in this disclosure, it is not intended to be an exclusive or.
[0407] In this disclosure, where articles are added by translation, such as a, an, and the in English, the disclosure may include that the nouns following these articles are in the plural form.
[0408] In the present disclosure, terms such as "less than or equal to," "less than," "greater than," "more than," "equal to," etc. may be interchangeable. Furthermore, in the present disclosure, terms meaning "good," "bad," "big," "small," "high," "low," "fast," "slow," "wide," "narrow," etc. may be interchangeable, not limited to the positive, comparative, and superlative. Furthermore, in the present disclosure, terms meaning "good," "bad," "big," "small," "high," "low," "fast," "slow," "wide," "narrow," etc. may be interchangeable, not limited to the positive, comparative, and superlative, as expressions with "i-th" (i is an arbitrary integer) attached (for example, "highest" may be interchangeable with "i-th highest").
[0409] In this disclosure, the terms "of," "for," "regarding," "related to," "associated with," etc. may be read interchangeably.
[0410] In the present disclosure, terms such as "when A, B," "if A, (then) B," "B upon A," "B in response to A," "B based on A," "B during / while A," "B before A," "B at (the same time as) / on A," "B after A," "B since A," and "B until A" may be interchangeable. Note that A, B, and the like herein may be replaced with appropriate expressions such as nouns, gerunds, and regular sentences, depending on the context. Note that the time difference between A and B may be approximately zero (immediately after or immediately before). A time offset may also be applied to the time at which A occurs. For example, "A" may be interchangeable with "before / after a time offset at which A occurs." The time offset (eg, one or more symbols / slots) may be predefined or may be specified by the UE based on signaled information.
[0411] In the present disclosure, timing, time, duration, time instance, any time unit (e.g., slot, subslot, symbol, subframe), period, occasion, resource, etc. may be read interchangeably.
[0412] Although the invention according to the present disclosure has been described in detail above, it is clear to those skilled in the art that the invention according to the present disclosure is not limited to the embodiments described in the present disclosure. The description of the present disclosure is for illustrative purposes only and does not impose any limiting meaning on the invention according to the present disclosure.
Claims
1. A terminal having: a receiving unit that receives configuration information regarding the time of multiple sensing resources in one sensing burst; and a control unit that controls the transmission of the sensing resources based on the configuration information.
2. The terminal according to claim 1, wherein the configuration information includes at least one of a duration of one sensing resource and a sensing resource interval.
3. The terminal of claim 1, wherein the configuration information includes information indicating a uniform, non-uniform, random, or disjoint resource pattern.
4. The terminal according to claim 1, wherein the receiving unit receives at least one of a port number, a power setting, a frequency resource setting, and a beam number as the associated parameters of the plurality of sensing resources.
5. A wireless communication method for a terminal, comprising: a step of receiving configuration information regarding the time of multiple sensing resources in one sensing burst; and a step of controlling transmission of the sensing resources based on the configuration information.
6. A base station having: a transmitting unit that transmits configuration information regarding the time of multiple sensing resources in one sensing burst; and a control unit that controls reception of the sensing resources based on the configuration information.