Method executed by user equipment, and user equipment
Patent Information
- Application Number
- PCT/CN2026/086534
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Priority Date
- 2025-03-27
- Filing Date
- 2026-03-27
- Publication Date
- 2026-10-01
Smart Images
Figure CN2026086534_01102026_PF_FP_ABST
Abstract
Description
Methods executed by user equipment and user equipment Technical Field
[0001] This disclosure relates to the field of wireless communication technology, and specifically to a method and related actions performed by a user equipment for determining downlink resource parameters and related reception processes, as well as the corresponding user equipment. Background Technology
[0002] The introduction in this section can help to better understand the various aspects of this disclosure. Therefore, the statements in this section should be read in this context and should not be construed as an admission of what is prior art or what is not prior art.
[0003] In 5G systems, besides latency, reliability, and availability, the energy efficiency of user equipment (UAE) is also a key factor. Typically, UAE consumes tens of milliwatts in idle or inactive states and hundreds of milliwatts in connected states. Depending on the application scenario, UAE may need to be charged weekly or daily, causing inconvenience in practical applications. Therefore, further reducing UAE power consumption and extending battery life are essential for improving energy efficiency and achieving a better user experience. For devices using micro-batteries or those where charging is inconvenient, such as sensors, automatic controllers, and wearable devices, where standby time may be 1-2 weeks or longer, improving their energy efficiency is even more critical.
[0004] User equipment (UE) can typically save power using discontinuous reception (DRX). To ensure connectivity, UE needs to periodically wake up in each DRX cycle to detect the control channel. Even when there is no data transmission for the UE, there is still periodic power consumption. If the UE could only wake up when there is a service transmission requirement, its power consumption would be significantly reduced. Therefore, the UE can be configured with a low-power auxiliary receiver to detect the low-power wake-up signal (LP-WUS) sent by the base station. The UE's primary receiver can remain in a low-power state (e.g., sleep mode) until the low-power receiver receives the LP-WUS and wakes up the primary receiver according to its indications for appropriate data processing. This allows the UE's service processing needs to be met with lower power consumption. To achieve this design goal, several problems need to be solved in the system, such as how to determine the LP-WUS used, its frequency domain location, and other parameters when the base station is configured with multiple LP-WUS configurations and when the UE reports specific capabilities, and how to determine the actions on the relevant cell based on the LP-WUS indications. Summary of the Invention
[0005] To address at least some of the aforementioned problems, this disclosure provides a method and a user equipment (UE) performed by a user equipment, enabling the UE to determine and use the relevant LP-WUS based on its configuration and state, thereby ensuring that the UE achieves the effects of reduced power consumption and improved system efficiency.
[0006] According to this disclosure, a method executed by a user equipment (UE) is proposed, comprising:
[0007] The configuration includes receiving high-layer signaling configurations based on bandwidth portion (BWP) related low-power wake-up signaling (LP-WUS) and / or cell-related LP-WUS configurations; and, depending on the state, the LP-WUS actually used; the "depending on the state" includes at least one of the following states:
[0008] -LP-WUS configuration status;
[0009] - Did the UE indicate that the BWP out-of-band reception capability should be activated?
[0010] - LP-WUS associated downlink BWP activation status.
[0011] Preferably, the method further includes: determining the location of the frequency domain resources used by LP-WUS according to one of the following methods:
[0012] - If the UE has not yet indicated the activation of the BWP out-of-band reception capability, the UE determines the frequency domain position of the LP-WUS by calculating from the minimum PRB (PRB#0) of the downlink BWP;
[0013] - If the UE indicates that the BWP out-of-band reception capability is activated, the UE determines the frequency domain position of LP-WUS by calculating from the minimum CRB (CRB#0) of the cell;
[0014] - The UE determines the frequency domain location of LP-WUS based on the base station's second instruction.
[0015] Preferably, the method further includes: when configuring a cell-related LP-WUS, the UE uses the cell-related LP-WUS according to at least one of the following conditions:
[0016] - The base station is configured with one or more associated downlink BWPs, and one of them is an active BWP;
[0017] - If the base station does not have an associated downlink BWP configured, and the UE indicates that the out-of-band reception capability of the BWP is activated, the SCS parameters of the activated BWP are the same as those of LP-WUS.
[0018] Additionally, according to this disclosure, a user equipment is proposed, comprising: a processor; and a memory storing instructions, wherein the instructions, when executed by the processor, perform the methods described above.
[0019] Invention Effects
[0020] According to this disclosure, the UE can correctly determine LP-WUS based on the relevant configuration and status, and use LP-WUS to ensure that the UE achieves the effects of reduced power consumption and improved system efficiency. Attached Figure Description
[0021] The above and other features of this disclosure will become more apparent from the following detailed description taken in conjunction with the accompanying drawings, wherein:
[0022] Figure 1 is a flowchart illustrating a method performed by a user equipment according to an embodiment of the present disclosure.
[0023] Figure 2 is a schematic block diagram illustrating the user equipment (UE) involved in this disclosure. Detailed Implementation
[0024] The present disclosure will now be described in detail with reference to the accompanying drawings and specific embodiments. It should be noted that the present disclosure should not be limited to the specific embodiments described below, which are provided merely as examples to convey the scope of the subject matter to those skilled in the art. Furthermore, for the sake of simplicity, detailed descriptions of well-known technologies not directly related to the present disclosure have been omitted to prevent confusion in understanding the present disclosure.
[0025] Generally, unless a different meaning is clearly given and / or implied in the context of its use, all terms used in this disclosure shall be interpreted according to their ordinary meaning in the relevant art. Unless expressly stated otherwise, all references to an element, device, apparatus, component, part, step, etc., shall be publicly interpreted as referring to at least one instance of that element, device, apparatus, component, part, step, etc. Unless it must be explicitly described that a step follows or precedes another step and / or implicitly imply that a step must follow or precede another step, the steps of any method in the embodiments of this disclosure need not be performed in the exact order disclosed. Where appropriate, any feature of any embodiment of this disclosure may be applied to any other embodiment. Similarly, any advantage of any embodiment may be applied to any other embodiment, and vice versa.
[0026] The following description uses 5G / NR mobile communication systems and their subsequent evolutions as example application environments to specifically describe several implementations according to this disclosure. However, it should be noted that this disclosure is not limited to the following implementations, but is applicable to many other wireless communication systems, such as communication systems after 5G and 4G and 3G mobile communication systems before 5G, 802.11 wireless networks, etc.
[0027] The following describes some of the terminology used in this disclosure. Unless otherwise specified, the terminology used in this disclosure is as defined herein. The terminology given in this disclosure may be used differently in 4G / LTE, 4G+ / LTE-Advanced, LTE-Advanced Pro, 5G / NR and later wireless communication systems or other communication systems, but a uniform terminology is used in this disclosure to simplify description. When applying the methods and processes of this disclosure to a specific system, the terminology used in that system can be substituted.
[0028] 3GPP: 3rd Generation Partnership Project
[0029] LTE: Long Term Evolution
[0030] NR: New Radio, New Wireless, New Air Interface
[0031] UE: User Equipment
[0032] gNB: NR base station
[0033] BWP: Bandwidth Part
[0034] SFN: System frame number
[0035] OFDM: Orthogonal Frequency Division Multiplexing
[0036] SCS: Sub-carrier spacing
[0037] RB: Resource Block
[0038] TDD: Time Division Duplexing
[0039] FDD: Frequency Division Duplexing
[0040] CSI: Channel State Information
[0041] DCI: Downlink Control Information
[0042] CRC: Cyclic Redundancy Check
[0043] QCL: Quasi-co-location
[0044] HARQ: Hybrid Automatic Repeat Request.
[0045] CORESET: Control resource set.
[0046] MIB: Master Information Block
[0047] SIB: System Information Block
[0048] SSB: SS / PBCH block, Synchronization Signal / Physical Broadcast Channel Block
[0049] SRS: Sounding Reference Signal
[0050] DMRS: Demodulation Reference Signal
[0051] CSI-RS: Channel State Information Reference Signal
[0052] RACH: random-access channel
[0053] PBCH: Physical broadcast channel
[0054] PUCCH: Physical Uplink Control Channel
[0055] PUSCH: Physical Uplink Shared Channel
[0056] PRACH: Physical random-access channel
[0057] PDSCH: Physical downlink shared channel
[0058] PDCCH: Physical downlink control channel
[0059] UL-SCH: Uplink Shared Channel
[0060] DL-SCH: Downlink Shared Channel
[0061] C-RNTI: Cell Radio Network Temporary Identifier
[0062] P-RNTI: Paging RNTI, Temporary Identifier for Paging Wireless Network
[0063] RA-RNTI: Random Access RNTI, Temporary Identifier for Random Access Wireless Networks
[0064] CS-RNTI: Configured Scheduling RNTI, a temporary identifier for configuring and scheduling wireless networks.
[0065] SI-RNTI: System Information RNTI, Temporary Identifier for Wireless Networks
[0066] TC-RNTI: Temporary C-RNTI, Temporary Cell Radio Network Identifier
[0067] LP-WUS: Low Power Wake-Up Signal
[0068] RRM: Radio Resource Management
[0069] RRC: Radio Resource Control
[0070] TCI: Transmission Configuration Indicator
[0071] MSB: Most Significant Bit
[0072] LSB: Least Significant Bit
[0073] PO: paging occasion
[0074] PF: paging frame
[0075] RRM: Radio Resource Management
[0076] PCI: Physical Cell Identifier
[0077] UAI: UE Assistance Information
[0078] CRB: Common Resource Block
[0079] PRB: Physical Resource Block
[0080] The following is a description of the technologies associated with this disclosure. Unless otherwise specified, the same terms in the specific embodiments have the same meaning as in the associated technologies.
[0081] It is worth noting that the User Equipment (UE) involved in this disclosure refers to any terminal device that accesses the communication network and receives services, such as a smartphone, mobile phone, tablet computer, mobile station, access terminal, sensor, wearable device, etc. When describing the methods used by the user equipment or performing related processes in this disclosure, terms such as "user" and "terminal" may be used. In the relevant descriptions, this disclosure does not make specific distinctions or limitations between these different terms and may use them interchangeably to describe the relevant steps and methods from different perspectives. Network equipment refers to devices that communicate with the user equipment, including but not limited to wireless base stations, gNBs, eNBs, wireless access points, wireless relays, user equipment with relay capabilities, etc. This disclosure may use a wireless base station as one form of network equipment implementation, but in specific implementations, other forms of network equipment can be easily used as replacements.
[0082] In NR networks, User Equipment (UE) can maintain network connectivity even when there is no service data transmission, enabling always-on network service. For example, UEs in idle state (RRC_IDLE state) or inactive state (RRC_INACTIVE state) can periodically check if the base station has sent them paging information. When paging information is detected, the UE can establish a radio connection based on the paging information and related signaling to transmit service data. UEs in connected state (RRC_CONNECTED state) with Discontinuous Reception (DRX) configured periodically start relevant timers according to the DRX configuration to detect PDCCH and receive or transmit related PDSCH / PUSCH based on the DCI in the PDCCH.
[0083] For connected UEs, the DRX parameters configured for the UE include timer parameters such as drx-onDurationTimer and drx-InactivityTimer, which indicate the runtime of relevant UE timers. The UE can determine an on-duration based on the DRX period parameters. The UE enters the active time from the start time of the on-duration, starts the drx-onDurationTimer, and detects the PDCCH. Once a PDCCH is successfully decoded during the active time, the UE starts a timer drx-InactivityTimer. When the UE receives a PDCCH related to a first transmission (new transmission), the UE can restart the drx-InactivityTimer. During the execution of this timer, the UE remains in the active time. Additionally, when the UE is waiting for a possible retransmission, the UE can start the corresponding retransmission timer drx-RetransmissionTimerDL or drx-RetransmissionTimerUL based on the downlink or uplink transmission. During the execution of these retransmission timers, the UE also remains in the active time to detect possible retransmission scheduling. In one example, the UE's active time includes:
[0084] - The drx-onDurationTimer or drx-InactivityTimer for the corresponding DRX group of the cell is currently running.
[0085] -drx-RetransmissionTimerDL or drx-RetransmissionTimerUL runs on any cell in the DRX group.
[0086] - The UE's random access timer ra-ContentionResolutionTimer or msgB-ResponseWindow is running.
[0087] - When the UE sends a scheduling request (SR) via PUCCH and suspends.
[0088] - When a RAR (random access response) is successfully received, but a new PDCCH for the C-RNTI of the MAC entity has not yet been received; the RAR is triggered by a random access preamble, and the preamble is not selected by the MAC entity from the CBRA (contention-based random access) preamble.
[0089] The UE performs PDCCH detection according to the DRX-related configuration. Even when there is no service data to transmit, the UE still performs the relevant detection, consuming the energy stored in the user equipment. One feasible method to reduce user power consumption is for the user equipment to use a low-power wake-up signal receiver (LR) to detect the wake-up signal (WUS) sent by the base station. Since the WUS is used for LR detection, it is also called LP-WUS (low power WUS). When there is no data transmission, the user equipment's main radio or main receiver (MR) remains in sleep mode to minimize the user equipment's power consumption; when data needs to be transmitted, the base station notifies the user equipment through LP-WUS. When the user equipment detects the wake-up information carried in the LP-WUS, the UE wakes up the MR and performs corresponding data processing. The LP-WUS can carry relevant information needed to wake up the user equipment, such as information related to the user equipment ID, or indicator bits corresponding to the UE or UE packet, or codeword values related to the UE or UE packet, or specific sequences corresponding to the UE or UE packet, etc., which can be called LP-WUS information. User equipment (UE) can determine whether it is woken up by the LP-WUS signal based on the LP-WUS information. Only when the UE detects LP-WUS information waking up itself, its user group, or all users, will it wake up the master receiver to perform relevant data transmission. This includes detecting the paging PDCCH on the associated paging opportunity (PO), transmitting PRACH, starting relevant timers, and performing PDCCH detection, etc. In this way, the UE can maintain its connection to the network with minimal power consumption without affecting its rapid response capability to service transmission demands. When implementing LR and MR functions, the UE may not necessarily use independent modules; it may simply be a logical division of internal modules and functions. No specific limitations are made here.
[0090] To conserve UE power, the base station can use LP-WUS to indicate whether the UE starts a timer (drx-onDurationTimer) at the beginning of an on-duration DRX cycle, thus entering the active period. Furthermore, if the UE is already in the active period, it does not need to detect LP-WUS.
[0091] Besides this method, the base station can also configure a dedicated LP-WUS timer (e.g., called lpwus-PDCCHMonitoringTimer) different from the aforementioned timers (drx-onDurationTimer, etc.) and use LP-WUS to instruct the UE whether to start this timer, enter the active time, and detect PDCCH. The base station uses LP-WUS to instruct the UE whether to start lpwus-PDCCHMonitoringTimer. In this case, the UE does not need to start the drx-onDurationTimer. During the operation of lpwus-PDCCHMonitoringTimer, once a PDCCH is successfully decoded during the active time, the UE starts a timer drx-InactivityTimer. When the UE receives a PDCCH associated with its first transmission (new transmission), the UE can restart the drx-InactivityTimer. During the operation of this timer, the UE remains in the active time.
[0092] For simplicity, when a UE uses LP-WUS, if the base station has configured DRX parameters (including drx-onDurationTimer, drx-InactivityTimer, etc.) but no dedicated LP-WUS timer is configured, the process of the UE starting drx-onDurationTimer and related timers according to LP-WUS instructions and detecting the PDCCH is referred to as LP-WUS Mode 1. If a dedicated LP-WUS timer is configured, the process of the UE starting lpwus_PDCCHMonitoringTimer and related timers according to LP-WUS and detecting the PDCCH is referred to as LP-WUS Mode 2.
[0093] The UE's active time is the total duration for which the UE detects the PDCCH. In LP-WUS mode 1, the active time includes the "on-duration" of the DRX cycle (drx-onDurationTimer runtime), the time the UE performs continuous reception while the drx-Inactivity-timer has not expired, and the time the UE performs continuous reception while waiting for a retransmission opportunity, etc. In LP-WUS mode 2, the active time includes the lpwus-PDCCHMonitoringTimer runtime, the time the UE performs continuous reception while the drx-InactivityTimer has not expired, and the time the UE performs continuous reception while waiting for a retransmission opportunity, etc.
[0094] In NR networks, base stations can configure one or more sets of LP-WUS parameters to indicate parameters such as the time-domain period, offset, frequency-domain location, and coding scheme used by LP-WUS. These parameters can be used to determine several time-frequency resources for base station transmission of LP-WUS and UE LP-WUS detection. Since the time-domain locations determined by these resources can repeat periodically, and base stations do not always transmit LP-WUS on all of these resources (for example, if no UE needs to be woken up on a certain DRX cycle, LP-WUS may not be transmitted), these time-frequency resources that may be used for LP-WUS detection are also called LP-WUS monitoring occasions (LP-WUS MO, or LMO). In this disclosure, for ease of description, sometimes the description is from the perspective of the LP-WUS resources configured by the base station, sometimes from the perspective of the LP-WUS MO used for UE detection, or LP-WUS is used to describe the related processes and steps. These descriptions are considered equivalent and interchangeable in the following text.
[0095] LP-WUS can use OOK (On-Offkeying) waveforms for transmission to reduce receiver complexity and UE power consumption. For compatibility with existing NR equipment, OOK can be generated using a method compatible with downlink CP-OFDM symbols in NR, making it easy for base stations to transmit signals with different waveforms. For example, the base station can use DFT-IFFT to generate the LP-WUS OOK symbol. In this case, one OFDM symbol can contain an integer F OOK symbols within the LP-WUS bandwidth, where F is an integer from 1 / 2 / 4 / 8 / 16. Therefore, relevant LP-WUS time-domain parameters, such as length and position, can also be described using OFDM symbols, time slots, and frames. When generating LP-WUS, the base station may use different multi-carrier parameters to generate OOK symbols, such as using CP-OFDM symbols with different subcarrier spacings (SCS) for LP-WUS generation. These SCS parameters can also be simply referred to as the LP-WUS SCS parameters.
[0096] Depending on different service requirements, the resources configured by the base station for transmitting one LP-WUS may occupy several OFDM symbols. These symbols may be on one time slot or multiple time slots, meaning that one LP-WUS (or LP-WUS MO) may occupy one or more time slots. In addition, the base station may also configure a repetition parameter to indicate repeated transmission of LP-WUS on multiple LP-WUS MOs, transmitting the same LP-WUS information to enhance downlink reception performance.
[0097] In NR, base stations can apply different SCS parameters to transmit signals in different frequency bands. For example, in the FR1 band, a base station can use an SCS of 15kHz or 30kHz for downlink signal transmission; in the FR2 band, it can use an SCS of 60kHz or 120kHz; and in the FR2-2 band, it may even use an SCS of 480kHz or 960kHz. These SCS parameters are typically represented using the μ parameter in NR, for example, an SCS of 2... μ *15kHz means that μ=0 corresponds to an SCS of 15kHz; μ=1 corresponds to an SCS of 30kHz; ...; μ=6 corresponds to an SCS of 960kHz, and so on. Using the μ parameter to describe the SCS is completely equivalent to directly using the size of the SCS (e.g., 15kHz / 30kHz...).
[0098] In addition, the LP-WUS transmitted by the base station occupies a certain bandwidth. For ease of explanation, the bandwidth used by LP-WUS can also be configured / described using the number of subcarriers of the OFDM symbol (i.e., the number of REs, which can also be converted into the number of RBs). Furthermore, for the convenience of UE receiver implementation, some guard bands are reserved outside the effective bandwidth and are not used for signal transmission; these can be called guard bands. In this invention, unless otherwise specified, the frequency domain bandwidth used for transmitting LP-WUS includes the bandwidth actually used for transmitting OOK symbols and the guard band.
[0099] The base station can also transmit LP-SS (lower power synchronization signal) for UE to perform related synchronization and RRM measurements. LP-SS can use similar waveforms and modulation schemes as LP-WUS, etc. The parameter descriptions of LP-WUS in this disclosure, such as SCS, bandwidth RB, and symbols, also apply to LP-SS and will not be described in detail here.
[0100] Base stations may use specific spatial transmission parameters (i.e., use specific beams) to transmit LP-WUS to achieve better downlink coverage, better downlink reception performance, and interference reduction. An LP-WUS can satisfy QCL relationships with other signals (e.g., SSBs or CSI-RS) or channels (e.g., PDCCH) or CORESETs in NR, allowing the UE to obtain relevant spatial transmission parameters based on these reference signals / channels for LP-WUS detection. For example, a base station can configure an LP-WUS to satisfy QCL-typeA or QCL-typeC relationships with an SSB of sequence number S in frequency band FR1 (i.e., the LP-WUS uses QCL-typeA or QCL-typeC QCL with SSB S), or satisfy QCL-typeC and QCL-typeD relationships with an SSB of sequence number S in frequency band FR2. The UE can then use the relevant spatial transmission parameters of the SSB of that SSB sequence number for the detection and reception of the LP-WUS.
[0101] Base stations may configure LP-WUS for UEs using different methods, such as configuration parameters in the BWP or cell-level configuration parameters. Furthermore, base stations may use different configuration methods depending on the UE's capabilities. This allows base stations to configure LP-WUS resources to indicate wake-up information for multiple users within the cell, thereby improving resource utilization efficiency. In this case, the UE needs to determine the LP-WUS resources to use based on the specific configuration and the capability information reported by the UE, thus obtaining the correct indication information. This disclosure solves these problems by implementing related methods and steps, enabling the UE to correctly use the relevant parameters / resources to detect LP-WUS, ensuring that the UE achieves the effects of reduced power consumption and improved system efficiency.
[0102] Furthermore, this disclosure uses a UE in the connected state (RRC_CONNECTED state) as an example to describe the relevant methods and processes. For simplicity, the description of the state may be omitted in the relevant steps, and the UE or user equipment may be referred to directly. If the UE is in other states, such as the idle state (RRC_IDLE state) or the inactive state (RRC_INACTIVE state), it may also apply LP-WUS to detect wake-up information to save power consumption. In this case, similar methods or certain steps may also be applied.
[0103] The implementation of each step in this disclosure will be described in more detail below in specific embodiments.
[0104] In NR, base stations can use RRC signaling to configure and reconfigure relevant radio link parameters for the UE. For example, in RRC setup or RRC reconfiguration messages, the information element CellGroupConfig is used to configure cell group parameters. CellGroupConfig is used to configure parameters for a master cell group (MCG) or a secondary cell group (SCG). A cell group contains parameters for a primary serving cell (SpCell) (e.g., using SpCellConfig) and parameters for several secondary serving cells (Scells) (e.g., using sCellToAddModList). The IE of the serving cell can further contain parameters such as channels and BWPs for that cell. For example, the parameters of a serving cell can be configured (added or modified) for the UE using ServingCellConfig. ServingCellConfig can contain various configuration information for the serving cell, including one or more downlink / uplink BWPs of the serving cell, and some cell-level common parameters used in the cell. For example, in ServingCellConfig, the BWP-Downlink information element is used to configure the ID of a downlink BWP, the parameters of the channel or signal on the BWP, the bandwidth of the BWP, and its frequency domain location. Within a cell, the base station can configure one or more downlink BWPs for the UE using one or more BWP-Downlink information elements. At any given time, the UE receives data on one of the downlink BWPs; this BWP is called the active downlink BWP. When the base station has configured multiple downlink BWPs, the UE can switch BWPs according to various methods to activate or deactivate them. For example, the UE can switch BWPs based on the DCI or MAC CE sent by the base station, or based on the running status of BWP-related timers, etc.
[0105] Additionally, if the UE is also configured with carrier aggregation (CA), meaning that in addition to the primary serving cell, the UE is also configured with one or more secondary serving cells, the base station may configure LP-WUS on one of the serving cells or on the downlink BWP of that serving cell to indicate whether a timer needs to be started on each serving cell and to detect the PDCCH.
[0106] Optionally, the base station may configure LP-WUS in the parameters of the downlink BWP. For example, the BWP-Downlink cell used to configure the downlink BWP parameters may also include one or more LP-WUS configurations (e.g., using the cell lp-wus-resource-bwp). Such one or more LP-WUS parameters may be configured directly in the BWP-Downlink, or in sub-cells within the BWP-Downlink, or in other downlink BWP-related cells; no further restrictions are imposed here. In the following text, LP-WUS in BWP or LP-WUS related to BWP may be used to refer to LP-WUS configured in the parameters of the downlink BWP, its sub-cells, or other downlink BWP-related cells.
[0107] Optionally, the base station may also configure one or more LP-WUS parameters (e.g., using the cell lp-wus-resource-cell) in addition to the downlink BWP configuration parameters (cell BWP-Downlink) in the cell group parameters or serving cell parameters. The cell lp-wus-resources-cell may be configured in the serving cell cell ServingCellConfig or in a sub-cell of ServingCellConfig other than the downlink BWP configuration, or in other sub-cells of CellGroupConfig (e.g., PhysicalCellGroupConfig), without further restrictions. In the following text, cell-related LP-WUS may be used to refer to LP-WUS configured in the cell group or serving cell cells (other than the downlink BWP related parameters).
[0108] When a base station configures one or more downlink bandpass windows (BWPs) for a UE, the UE can determine which downlink BWP to use for a certain period of time using a specific method. This downlink BWP is also called the active downlink BWP, and can be simply referred to as the active BWP for the sake of clarity. The UE typically receives signals within the bandwidth of the active BWP. Some UEs have the capability to receive LP-WUS outside the bandwidth of the active BWP (e.g., the UE has an independent receiver level). The UE can report this "active BWP out-of-band reception capability" to the base station through a UE capability report message, such as the indication message LP-WUS-monitoring-outsideofActiveBWP. The UE can then support detecting LP-WUS outside the bandwidth of the active BWP. In this case, the UE can use the LP-WUS whether the frequency domain resources configured for the UE by the base station are within or outside the bandwidth of the active BWP. On the other hand, if the UE does not report via the indication information LP-WUS-monitoring-outsideofActiveBWP that the UE can support LP-WUS detection outside the bandwidth of the active BWP (e.g., before the UE reports the relevant capability; or the UE does not have the capability and does not report it), the base station assumes that the UE does not have the capability. The UE can only use LP-WUS if the frequency domain resources of the LP-WUS configured by the base station for the UE are within the active BWP or if the BWP associated with the LP-WUS is an active BWP.
[0109] In the embodiments of this disclosure, the UE can receive LP-WUS configuration parameters from higher layers, including one or more of BWP-related LP-WUS and / or cell-related LP-WUS. The UE can also report whether it has the capability to activate BWP out-of-band reception. On one hand, the UE can determine whether to use the LP-WUS based on its LP-WUS configuration status and the activation status of the relevant downlink BWP, and determine whether to start a timer and detect the PDCCH on the relevant BWP according to the indication in the LP-WUS. On the other hand, the UE can determine the LP-WUS to be used and its frequency domain location based on whether the relevant UE capability status has been reported. Based on the determined LP-WUS, the UE can detect LP-WUS information on the relevant LP-WUS MO, start a timer on the relevant cell based on the LP-WUS information, and detect the PDCCH. When the UE detects LP-WUS information on the relevant LP-WUS MO based on the determined LP-WUS, it may also consider other conditions, such as the measurement of the LP-WUS signal (e.g., whether the measured RSRP, RSRQ, etc. reach a certain threshold), or the indication of the base station, the UE's activity time, etc. No further limitations are made here. The UE can determine the application of LP-WUS based on the method in this disclosure and a combination of these other conditions.
[0110] Figure 1 is a flowchart illustrating a method performed by a user equipment according to an embodiment of the present disclosure.
[0111] As shown in Figure 1, in step 101, the configuration of LP-WUS is received from the base station, including BWP-related LP-WUS and / or cell-related LP-WUS.
[0112] In step 103, the UE determines the LP-WUS to be used based on relevant states. These states include the LP-WUS configuration state, whether the UE indicates support for the ability to detect LP-WUS out-of-band during BWP activation, the BWP activation state, and so on.
[0113] In step 105, the UE detects the LP-WUS in the relevant LP-WUS MO according to the LP-WUS determined in step 103. When the UE detects the LP-WUS, the UE determines to start a timer according to the indication in the LP-WUS, and detects the PDCCH on the active BWP.
[0114] In one optional embodiment of this disclosure, the UE determines the LP-WUS to use based on the LP-WUS configuration state.
[0115] In one aspect of an optional embodiment, if a downlink BWP configuration in the cell contains configuration parameters for a BWP-related LP-WUS, the UE determines the LP-WUS to use based on these downlink BWP-related LP-WUS configuration parameters. The UE determines that the LP-WUS is associated with the BWP. The UE determines that the frequency domain bandwidth of the LP-WUS is within the downlink BWP, and the frequency domain position of the LP-WUS is calculated starting from the minimum PRB (PRB#0) of the downlink BWP. If the LP-WUS is configured with an SCS parameter, the SCS of the LP-WUS should be the same as the SCS of the downlink BWP. If the LP-WUS is not configured with an SCS parameter, the UE can use the SCS parameter of the downlink BWP as the SCS of the LP-WUS. When the downlink BWP is an active BWP, the UE uses the LP-WUS and detects the LP-WUS in the relevant LP-WUS MO according to its configuration.
[0116] In one aspect of an optional embodiment, if none of the downlink BWP configurations in the cell contain BWP-related LP-WUS configuration parameters, but the serving cell's configuration contains cell-related LP-WUS configuration parameters, the UE determines the LP-WUS to use based on the cell-related LP-WUS. The UE determines that the frequency domain bandwidth of the LP-WUS is within the cell's carrier, and the frequency domain position of the LP-WUS is calculated starting from the cell's minimum CRB (CRB#0). The UE determines the LP-WUS to use according to one of the following methods:
[0117] The base station also configures one or more associated downlink BWPs (on the same serving cell) for the LP-WUS associated with this cell (e.g., by configuring the ID of the associated downlink BWP). The UE determines that the LP-WUS is associated with the configured downlink BWPs and assumes that these associated downlink BWPs use the same SCS. If the LP-WUS is configured with an SCS parameter, the SCS of the LP-WUS should be the same as the SCS of the associated downlink BWP. Otherwise, the UE can use the SCS parameter of the associated downlink BWP as the SCS of the LP-WUS. When any of the associated downlink BWPs in the serving cell is an active BWP, the UE determines to use the LP-WUS and detects the LP-WUS in the associated LP-WUS MO according to the configuration of the LP-WUS. When none of the associated downlink BWPs in the serving cell are active BWPs, the UE determines not to use the LP-WUS. If the UE does not indicate the LP-WUS-monitoring-outsideofActiveBWP capability, the UE assumes that the bandwidth of LP-WUS is entirely within the bandwidth of the associated downlink BWP, and the UE does not expect the bandwidth of LP-WUS to be outside the bandwidth of any associated BWP.
[0118] - The base station has not configured an associated downlink BWP for LP-WUS. The UE determines the SCS used for LP-WUS based on the SCS configured in the LP-WUS parameters. Optionally, if the UE does not indicate LP-WUS-monitoring-outsideofActiveBWP capability, when the SCS of the previous active downlink BWP in the same serving cell is the same as the SCS of LP-WUS, and the bandwidth of LP-WUS is entirely within the bandwidth of the active BWP, the UE determines to use LP-WUS and detects LP-WUS in the relevant LP-WUS MO according to the configuration of LP-WUS. Optionally, if the UE indicates LP-WUS-monitoring-outsideofActiveBWP capability, when the SCS of the previous active downlink BWP in the same serving cell is the same as the SCS of LP-WUS, the UE determines to use LP-WUS and detects LP-WUS in the relevant LP-WUS MO according to the configuration of LP-WUS.
[0119] In an optional embodiment of this disclosure, the UE further determines the bandwidth location of the BWP-related LP-WUS based on the UE capability indication state.
[0120] In one aspect of an optional embodiment, if a downlink BWP configuration cell contains configuration parameters for a BWP-related LP-WUS, the UE determines the LP-WUS to use based on the downlink BWP-related LP-WUS. The UE determines that the LP-WUS is associated with the BWP. If the LP-WUS is configured with an SCS parameter, the SCS of the LP-WUS should be the same as the SCS of the downlink BWP. If the LP-WUS is not configured with an SCS parameter, the UE can use the SCS parameter of the downlink BWP as the SCS of the LP-WUS. When the downlink BWP is an active BWP, the UE uses the BWP-related LP-WUS and detects the LP-WUS in the relevant LP-WUS MO according to the configuration of the LP-WUS.
[0121] In one aspect of an alternative embodiment, if the UE has not yet indicated the LP-WUS-monitoring-outsideofActiveBWP capability, the UE determines the frequency domain location of the LP-WUS by calculating from the minimum PRB (PRB#0) of the downlink BWP.
[0122] In one aspect of an alternative embodiment, if the UE indicates the LP-WUS-monitoring-outsideofActiveBWP capability, the UE determines the frequency domain location of the LP-WUS starting from the minimum CRB (CRB#0) of the cell.
[0123] In one aspect of an optional embodiment, the UE determines the frequency domain location of the LP-WUS based on a second indication from the base station. For example, the UE by default determines that the frequency domain bandwidth of the LP-WUS is within the downlink BWP, and the frequency domain location of the LP-WUS is calculated starting from the smallest PRB (PRB#0) of the downlink BWP. If the base station configures the second indication, for example, by setting the second indication parameter resourceOutsideofBWP to true, the UE determines the frequency domain location of the LP-WUS based on a second reference point. For example, if the second reference point is CRB#0 by default, the UE determines the frequency domain location of the LP-WUS starting from the smallest CRB (CRB#0) of the cell. Alternatively, the base station configures the CRB number of the LP-WUS frequency domain reference point, and the UE determines the frequency domain location of the LP-WUS starting from the configured reference point.
[0124] In an optional embodiment of this disclosure, the UE always determines the LP-WUS to use based on cell-related LP-WUS parameters, and when the UE supports CA, the base station configures LP-WUS only on one serving cell (within a cell group). The UE determines the LP-WUS to use based on the status of the associated active BWP.
[0125] In one aspect of an optional embodiment, if the configuration cells of a serving cell of the UE contain cell-related LP-WUS configuration parameters, the UE determines that the frequency domain bandwidth of the LP-WUS is within the cell's carrier, and the frequency domain position of the LP-WUS is calculated starting from the minimum CRB (CRB#0) of the cell. The UE then determines whether to use the LP-WUS according to one of the following methods:
[0126] The base station also configures one or more associated downlink BWPs (on the same serving cell) for the LP-WUS associated with this cell (e.g., by configuring the ID of the associated downlink BWP). The UE determines that the LP-WUS is associated with the configured BWPs and assumes that these associated downlink BWPs use the same SCS. If the LP-WUS is configured with an SCS parameter, the SCS of the LP-WUS should be the same as the SCS of the associated downlink BWPs. Otherwise, the UE can use the SCS parameter of the associated downlink BWP as the SCS of the LP-WUS. When any of the associated downlink BWPs in the serving cell is an active BWP, the UE determines to use the LP-WUS and detects the LP-WUS in the associated LP-WUS MO according to the configuration of the LP-WUS. When none of the associated downlink BWPs in the serving cell are active BWPs, the UE determines not to use the LP-WUS. If the UE does not indicate the LP-WUS-monitoring-outsideofActiveBWP capability, the UE assumes that the configured LP-WUS bandwidth is entirely within the bandwidth of the associated downlink BWP, and the UE does not expect the LP-WUS bandwidth to be outside the bandwidth of any associated BWP.
[0127] - The base station has not configured an associated downlink BWP for LP-WUS. The UE determines the SCS used for LP-WUS based on the SCS configured in the LP-WUS parameters. If the UE does not indicate LP-WUS-monitoring-outsideofActiveBWP capability, when the SCS of the previous active downlink BWP in the same serving cell is the same as the SCS of LP-WUS, and the bandwidth of LP-WUS is entirely within the bandwidth of the active BWP, the UE determines to use LP-WUS and detects LP-WUS in the relevant LP-WUS MO according to the configuration of that LP-WUS. If the UE indicates LP-WUS-monitoring-outsideofActiveBWP capability, when the SCS of the previous active downlink BWP in the same serving cell is the same as the SCS of LP-WUS, the UE determines to use LP-WUS. When the UE determines to use the cell-related LP-WUS, it detects LP-WUS in the relevant LP-WUS MO according to the configuration of that LP-WUS.
[0128] In an optional embodiment of this disclosure, the UE further determines the LP-WUS to be used based on whether the UE has indicated UE capabilities and the configuration state.
[0129] In one aspect of an optional embodiment, if the UE does not indicate the LP-WUS-monitoring-outsideofActiveBWP capability, or indicates the capability but does not configure a cell-related LP-WUS, and if a configuration cell of a downlink BWP contains configuration parameters for a BWP-related LP-WUS, the UE determines the LP-WUS to be used in the downlink BWP based on these downlink BWP-related LP-WUS configuration parameters. The UE determines that the LP-WUS is associated with the BWP and that the frequency domain bandwidth of the LP-WUS is located within the downlink BWP. The UE determines the frequency domain location of the LP-WUS by calculating from the minimum PRB (PRB#0) of the downlink BWP. If the LP-WUS is configured with an SCS parameter, the SCS of the LP-WUS should be the same as the SCS of the downlink BWP. Otherwise, the UE can use the SCS parameters of the downlink BWP as the SCS of the LP-WUS. When the downlink BWP is an active BWP, the UE uses the determined LP-WUS and detects the LP-WUS in the relevant LP-WUS MO according to the configuration of the LP-WUS.
[0130] In one aspect of an optional embodiment, if the UE has indicated LP-WUS-monitoring-outsideofActiveBWP capability, and if the configuration cells of the serving cell contain cell-related LP-WUS configuration parameters, the UE determines the LP-WUS to use based on the cell-related LP-WUS. The UE determines that the frequency domain bandwidth of the LP-WUS is within the cell's carrier, and the frequency domain position of the LP-WUS is calculated starting from the cell's minimum CRB (CRB#0). The UE also determines whether to use the LP-WUS according to one of the following methods:
[0131] - The base station configures one or more associated downlink BWPs (on the same serving cell) for LP-WUS (e.g., by configuring the ID of the associated downlink BWP). The UE assumes that these associated downlink BWPs use the same SCS. If the LP-WUS is configured with SCS parameters, the SCS of the LP-WUS should be the same as the SCS of the associated downlink BWPs. Otherwise, the UE can use the SCS parameters of the associated downlink BWPs as the SCS of the LP-WUS. When any of the associated downlink BWPs in the serving cell is an active BWP, the UE determines to use the LP-WUS and detects the LP-WUS in the relevant LP-WUS MO according to the configuration of the LP-WUS. When none of the associated downlink BWPs in the serving cell are active BWPs, the UE determines not to use the LP-WUS.
[0132] - The base station has not configured an associated downlink BWP for LP-WUS. The UE determines the SCS for LP-WUS based on the SCS configured in the LP-WUS parameters. When the SCS of the previously active downlink BWP in the same serving cell is the same as the SCS of LP-WUS, the UE determines to use LP-WUS and detects LP-WUS in the relevant LP-WUS MO according to the configuration of the LP-WUS.
[0133] In an optional embodiment of this disclosure, the UE determines whether to use the LP-WUS associated with the BWP in the cell based on whether the UE has indicated UE capabilities.
[0134] In one aspect of an optional embodiment, when the UE does not have the capability to indicate LP-WUS-monitoring-outsideofActiveBWP, if a configuration cell of a downlink BWP contains configuration parameters for a BWP-related LP-WUS, the UE determines the LP-WUS to use based on the LP-WUS associated with that downlink BWP. The UE determines that the LP-WUS is associated with that BWP. If the LP-WUS is configured with an SCS parameter, the SCS of the LP-WUS should be the same as the SCS of the downlink BWP. Otherwise, the UE can use the SCS parameter of the downlink BWP as the SCS of the LP-WUS. The frequency domain position of the LP-WUS determined by the UE is calculated starting from the minimum PRB (PRB#0) of that downlink BWP. When the downlink BWP is an active BWP, the UE uses the determined LP-WUS (resource) and detects the LP-WUS in the relevant LP-WUS MO according to the configuration of that LP-WUS.
[0135] In one aspect of an optional embodiment, when the UE indicates the capability LP-WUS-monitoring-outsideofActiveBWP, if a downlink BWP's configuration cell contains configuration parameters for the LP-WUS associated with that BWP, and if any BWP in the cell is active, and the SCS of the LP-WUS is the same as the SCS of the active BWP, the UE uses that LP-WUS and detects it in the relevant LP-WUS MO according to its configuration. The UE expects only one LP-WUS resource to be configured in a cell. The frequency domain location of the LP-WUS determined by the UE is calculated starting from the smallest PRB (PRB#0) of the BWP where the LP-WUS is configured.
[0136] In one aspect of an optional embodiment, when the UE indicates the capability LP-WUS-monitoring-outsideofActiveBWP, if a downlink BWP's configuration information element contains configuration parameters for the LP-WUS associated with the BWP, and these configuration parameters also configure an associated downlink BWP, the UE expects the associated downlink BWP to have the same SCS as the BWP containing the LP-WUS. When any associated downlink BWP in the cell (including the BWP containing the LP-WUS) is an active BWP, the UE uses that LP-WUS and detects the LP-WUS in the associated LP-WUS MO according to its configuration. The frequency domain location of the LP-WUS determined by the UE is calculated starting from the smallest PRB (PRB#0) of the BWP where the LP-WUS is configured.
[0137] A serving cell configuration in a base station includes several carriers (using different μ), and each carrier typically uses a reference point to determine its absolute frequency position on the radio frequency.
[0138] In NR, for carriers with SCS parameter μ, Common Resource Blocks (CRBs) are defined, starting from 0 and increasing upwards in the frequency domain. The center of subcarrier 0 of CRB#0 coincides with reference point A. The UE can obtain the location of point A based on the absolute frequency parameters of point A configured by the base station, or calculate the location of point A based on the location and parameters of the cell SSB. In this way, the UE can determine several CRBs for each carrier, increasing from CRB#0. An RB typically includes 12 REs, and the CRBs are numbered... The relationship with the frequency domain number k of the resource element (RE) is modulo 12, with point A as the center for REs where k = 0. This allows the UE to determine the frequency domain location of relevant signals / channels on carriers with SCS parameter μ within the cell, using the CRB sequence number and / or RE sequence number.
[0139] The base station can configure a BWP for the UE on the serving cell. A BWP is a continuous CRB segment on a carrier using an SCS parameter of μ. The UE can configure the BWP based on the start position parameter relative to CRB#0. and the number of RBs The location and size of the BWP are determined, where i is the BWP's index and μ is the BWP's SCS parameter. The indexes of PRBs (Physical Resource Blocks) on the BWP can be defined starting from PRB#0. and In this way, the UE can determine the frequency domain location of the relevant signal / channel within the BWP based on the PRB sequence number and / or RE sequence number.
[0140] Typically, the bandwidth of an LP-WUS in the frequency domain is fixed. For example, when the SCS is 15kHz or 30kHz in the FR1 band, or 60kHz or 120kHz in the FR2 band, the bandwidth of the LP-WUS (excluding the guard sideband) is 11 (consecutive) RBs. In this case, the UE only needs to determine the starting PRB / CRB position of the LP-WUS to determine all the frequency domain resources of the LP-WUS.
[0141] In another aspect of the optional embodiments of this disclosure, the calculation of the frequency domain position of the LP-WUS determined by the UE starting from the smallest PRB (PRB#0) of the BWP includes: the UE determining, based on the configured frequency domain parameters of the LP-WUS (e.g., lp-wus-startingRB), the sequence number of the starting PRB (excluding guard sideband) for the frequency domain resources used by the LP-WUS is either the value indicated by lp-wus-startingRB or the position indicated by lp-wus-startingRB. For example, lp-wus-startingRB is an integer value, and its range can be... The UE can use the lp-wus-startingRB value as the PRB sequence number. For example, if lp-wus-startingRB is a SLIV encoded value, the UE can deduce the PRB sequence number according to the encoding rules. Optionally, the base station may also configure RE-level offsets to indicate the frequency domain resources of LP-WUS. For example, the base station may indicate an RE offset value lp-wus-startingRE, where lp-wus-startingRE is an integer value ranging from [0, 11]. The UE determines that the starting position of LP-WUS is lp-wus-startingRB, offset upwards by lp-wus-startingRE RE RE values.
[0142] In another aspect of the optional embodiments of this disclosure, the frequency domain location of the LP-WUS determined by the UE, starting from the minimum CRB (CRB#0) of the cell, includes: the UE determining, based on the configured frequency domain parameters of the LP-WUS, such as lp-wus-startingRB, the sequence number of the starting CRB (excluding guard sideband) for the frequency domain resources used by the LP-WUS, as indicated by the value or position indicated by lp-wus-startingRB. For example, lp-wus-startingRB is an integer value, which can range from [0, maxNrofPhysicalResourceBlocks-1], and the UE can use the lp-wus-startingRB value as the CRB sequence number. maxNrofPhysicalResourceBlocks is the maximum number of RBs for a carrier in NR, typically 275. Optionally, the base station may also configure RE-level offsets to indicate the frequency domain resources of LP-WUS. For example, the base station may indicate an RE offset value lp-wus-startingRE, where lp-wus-startingRE is an integer value that can range from [0, 11]. The UE determines that the starting position of LP-WUS is lp-wus-startingRE times above the CRB of lp-wus-startingRB.
[0143] After determining the starting position of LP-WUS, the UE can determine the frequency domain resources of LP-WUS based on its bandwidth. Furthermore, in the example above, the frequency domain position of LP-WUS determined by the UE is the minimum RB position. A similar method can also be used to determine the center RB position or the maximum RB position of LP-WUS. The UE can also determine the frequency domain resources of LP-WUS based on the determined center RB position or maximum RB position, which will not be repeated here.
[0144] In another aspect of an optional embodiment of this disclosure, the base station configures the size of the guard sideband of the LP-WUS, for example, configuring the upper guard sideband via a higher-guard-band parameter and the lower guard sideband via a lower-guard-band parameter. The UE can determine the frequency domain resources used by the entire LP-WUS based on the location and size of the LP-WUS excluding the guard bandwidth, as determined by the relevant methods in this disclosure.
[0145] In another aspect of the optional embodiments of this disclosure, when the UE detects LP-WUS information on the relevant LP-WUS MO based on the determined LP-WUS (resources / parameters), it may also consider other conditions and states, such as measurements of the LP-WUS signal (e.g., whether the measured RSRP, RSRQ, etc., have reached a certain threshold), or indications from the base station (start detection / exit detection), whether it is the UE's active time, etc. The UE may combine these other conditions to determine LP-WUS detection.
[0146] In another aspect of the optional embodiments of this disclosure, when a handover occurs in the downlink BWP used by the UE, a certain amount of time is required from the start of the handover (e.g., receiving a DCI handover command or the BWP-inactivity timer times out) to the completion of the handover. This time is related to factors such as the UE's capabilities, the SCS used by the BWP, and whether a TCI state handover is also involved.
[0147] Optionally, when the UE determines that it is using LP-WUS on the active BWP, the UE detects LP-WUS on the LP-WUS MO of all symbols on the active BWP that has completed the handover.
[0148] Optionally, the UE does not detect LP-WUS on LP-WUS MOs that overlap with the BWP handover time on the same cell.
[0149] In another aspect of the optional embodiments of this disclosure, when the UE detects LP-WUS, it determines whether to start a related timer and whether to perform PDCCH detection on the active BWP of the relevant cell (if the cell is not a deactivated cell, the active BWP is not a dormant BWP) based on the indication (LP-WUS information) in the LP-WUS.
[0150] When the UE supports CA, the LP-WUS configured on a cell can be used to indicate wake-up information for multiple cells in a cell group. For example, if the UE also configures two DRX groups in a cell group, different codewords can be used in the LP-WUS to indicate different wake-up information for these two DRX groups, that is, to indicate whether cells in different DRX groups need to be woken up and PDCCH needs to be detected.
[0151] An example is shown in Table 1. Optionally, when the UE is configured with two DRX groups, the UE uses 3 codewords to represent different wake-up information. Optionally, when the UE is configured with one DRX group, the UE uses 1 codeword (codeword 0) to represent different wake-up information.
[0152] Table 1
[0153] Based on the base station configuration, the UE can determine that the maximum number of codewords that an LP-WUS can represent is Ncode. The base station also configures a start codeword value for the UE. The UE obtains the actual codeword value used to indicate itself based on the difference between the detected LP-WUS codeword value and the start codeword value. For example, when two DRX groups are configured, if the base station configures the start codeword value for the UE to be 3, and the UE detects an LP-WUS codeword value of 3, the UE obtains an actual codeword value of 0, corresponding to codeword 0 in Table 1, and wakes up DRX group 0. When the actual codeword value obtained by the UE is not in Table 1, the UE does not wake up the relevant DRX group.
[0154] The following description, using FIG2, illustrates a user equipment that can perform the methods described in detail above in this disclosure as an embodiment.
[0155] Figure 2 is a schematic block diagram illustrating the user equipment (UE) involved in this disclosure.
[0156] As shown in Figure 2, the user equipment UE400 includes a processor 401 and a memory 402. The processor 401 may include, for example, a microprocessor, a microcontroller, an embedded processor, etc. The memory 402 may include, for example, volatile memory (such as random access memory, RAM), a hard disk drive (HDD), non-volatile memory (such as flash memory), or other memory. Program instructions are stored on the memory 402. When executed by the processor 401, these instructions can perform the methods described in detail herein, executed by the user equipment.
[0157] The methods and related devices of this disclosure have been described above in conjunction with preferred embodiments. Those skilled in the art will understand that the methods shown above are merely exemplary, and the various embodiments described above can be combined with each other without contradiction. Furthermore, to avoid repetition, some steps or methods already described in one embodiment may not be repeated in the description of other aspects or embodiments if they may be reused in other aspects or embodiments, in order to avoid excessive redundancy. Those skilled in the art can combine related steps and methods. In addition, the methods of this disclosure are not limited to the steps and order shown above. The network nodes and user equipment shown above may include more modules, such as modules that can be developed or will be developed in the future for use with base stations, MMEs, or UEs, etc. The various identifiers shown above are merely exemplary and not restrictive, and this disclosure is not limited to the specific information elements exemplified by these identifiers. Those skilled in the art can make many variations and modifications based on the teachings of the illustrated embodiments. For example, in this disclosure, "1" and "0" are used to represent related indications or information, and they can be interchanged without contradiction. That is, "0" is used to indicate information indicated by "1" in this disclosure, and "1" is used to indicate information indicated by "0" in this disclosure. As another example, in the examples of this disclosure, some sequence numbers are arranged in ascending order to correspond to bits from MSB to LSB. Without contradiction, they could also be arranged in descending order to correspond to bits from MSB to LSB. Furthermore, unless otherwise specified, the sequence numbers in the examples of this disclosure are counted incrementally starting from 0. Sequence number 0 can correspond to the first element of the sequence, sequence number 0 can correspond to the second element of the sequence, and so on. These variations do not affect the process by which the UE determines the related information based on the related indication.
[0158] It should be understood that the above embodiments of this disclosure can be implemented by software, hardware, or a combination of both. For example, the various components inside the base station and user equipment in the above embodiments can be implemented by a variety of devices, including but not limited to: analog circuit devices, digital circuit devices, digital signal processing (DSP) circuits, programmable processors, application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), programmable logic devices (CPLDs), and so on.
[0159] In this disclosure, "base station" can refer to a mobile communication data and control switching center with high transmission power and wide coverage, including functions such as resource allocation and scheduling, and data reception and transmission. "User equipment" can refer to user mobile user equipment, such as mobile phones, laptops, and other user equipment that can wirelessly communicate with base stations or micro base stations.
[0160] Furthermore, the embodiments of this disclosure disclosed herein can be implemented on a computer program product. More specifically, the computer program product is one that has a computer-readable medium on which computer program logic is encoded, which, when executed on a computing device, provides related operations to implement the above-described technical solutions of this disclosure. When executed on at least one processor of a computing system, the computer program logic causes the processor to perform the operations (methods) described in the embodiments of this disclosure. This configuration of the disclosure is typically provided as software, code, and / or other data structures set or encoded on a computer-readable medium such as an optical medium (e.g., CD-ROM), floppy disk, or hard disk, or other media such as firmware or microcode on one or more ROM, RAM, or PROM chips, or downloadable software images, shared databases, etc., in one or more modules. The software or firmware or such configuration can be installed on a computing device to cause one or more processors in the computing device to perform the technical solutions described in the embodiments of this disclosure.
[0161] Furthermore, each functional module or feature of the base station equipment and user equipment used in each of the above embodiments can be implemented or executed by circuitry, which is typically one or more integrated circuits. Circuitry designed to perform the various functions described in this specification may include general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs) or general-purpose integrated circuits, field-programmable gate arrays (FPGAs) or other programmable logic devices, discrete gate or transistor logic, or discrete hardware components, or any combination of the above devices. The general-purpose processor may be a microprocessor, or the processor may be an existing processor, controller, microcontroller, or state machine. The aforementioned general-purpose processor or each circuit may be configured by digital circuitry or by logic circuitry. Furthermore, when advancements in semiconductor technology lead to advanced technologies that can replace current integrated circuits, this disclosure may also utilize integrated circuits obtained using such advanced technologies.
[0162] Although the present disclosure has been illustrated above in conjunction with preferred embodiments, those skilled in the art will understand that various modifications, substitutions, and changes can be made to the disclosure without departing from its spirit and scope. Therefore, the disclosure should not be limited by the above embodiments, but rather by the appended claims and their equivalents.
Claims
1. A method executed by a user equipment (UE), comprising: Receive high-layer signaling configurations including bandwidth-partial BWP-related low-power wake-up signal LP-WUS configuration and / or cell-related LP-WUS configuration; Determine whether to use LP-WUS, and wake up the DRX group based on the codeword transmitted by LP-WUS; Determining to use the LP-WUS includes: When the configuration parameters of the LP-WUS associated with the cell exist, it is determined that the frequency domain bandwidth of the LP-WUS is within the carrier of the cell. The frequency domain position of the LP-WUS, excluding the guard sideband, starts from the minimum common resource block (CRB) of the cell plus the configured frequency domain parameters of the LP-WUS; and If the UE does not indicate the ability to detect LP-WUS outside the bandwidth of the activated BWP, when the subcarrier spacing SCS of the activated downlink BWP is the same as the SCS of the LP-WUS, and the entire bandwidth of the LP-WUS is within the bandwidth of the activated BWP, it is determined that the LP-WUS will be used, and the LP-WUS will be detected during the relevant LP-WUS detection opportunity; and If the UE indicates that it has the capability to detect LP-WUS outside the bandwidth of the activated BWP, when the SCS of the activated downlink BWP is the same as the SCS of the LP-WUS, it is determined that the LP-WUS will be used, and the LP-WUS will be detected during the relevant LP-WUS detection opportunity.
2. The method according to claim 1, wherein, Also includes: Determining the use of the LP-WUS also includes determining the location of the frequency domain resources used by the LP-WUS according to one of the following methods: - If the UE has not yet indicated the ability to detect LP-WUS outside the bandwidth of the BWP, the UE determines the frequency domain location of LP-WUS by calculating from the smallest physical resource block (PRB) of the downlink BWP; - If the UE indicates that it has the capability to detect LP-WUS outside the bandwidth of BWP, the UE determines the frequency domain location of LP-WUS from the smallest common resource block (CRB) of the cell. - The UE determines the frequency domain location of LP-WUS according to the second instruction from the base station.
3. The method according to claim 1, wherein, Determining to use the LP-WUS based on the status also includes, when the UE uses the cell-related LP-WUS configured, it is based on at least one of the following conditions: - The base station is configured with one or more associated downlink BWPs, and one of them is an active BWP; - If the base station does not have an associated downlink BWP configured, and the UE indicates that the LP-WUS capability is detected outside the bandwidth of the activated BWP, the subcarrier spacing SCS parameter of the activated BWP is the same as the SCS of LP-WUS.
4. The method according to claim 1, wherein, The codeword wake-up DRX group based on LP-WUS transmission also includes: The UE is configured with two DRX groups in a cell group. The UE wakes up the first DRX group and / or the second DRX group respectively according to the difference between the codeword transmitted by LP-WUS and the starting codeword value.
5. A user equipment, comprising: processor; as well as Memory, which stores instructions The instructions, when executed by the processor, perform the method described in any one of claims 1 to 4.