Method performed by a user equipment and user equipment

Abstract

The present disclosure provides a method and a user equipment performed by a user equipment (UE). The method comprises: receiving first system information block (SIB) information on an associated cell, the first SIB information comprising indication information for indicating whether a low power synchronization signal (LP-SS) / low power wake-up signal (LP-WUS) is configured on a same carrier or a different carrier as a carrier used by the associated cell, and signaling parameters; and determining a SCS parameter used by the LP-SS / LP-WUS according to the indication information and the signaling parameters included in the received first SIB information.

Description

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 main receiver can remain in a low-power state (e.g., sleep mode) until the low-power receiver receives the LP-WUS signal and wakes up the main receiver according to its instructions for corresponding 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 obtaining the relevant parameters for LP-WUS usage, and how to perform relevant processing according to network instructions when the network configuration parameters cannot meet the UE's wake-up delay requirements. Summary of the Invention

[0005] To address at least some of the aforementioned problems, this disclosure provides a method and a user equipment that, while minimizing system overhead, enables the UE to correctly detect LP-WUS and ensures that the UE's behavior is consistent with the behavior indicated by the network, thereby saving UE power consumption and improving user experience.

[0006] According to this disclosure, a method executed by a user equipment (UE) is proposed, comprising: receiving first system information block (SIB) information on an associated cell, the first SIB information including indication information indicating whether a low-power synchronization signal (LP-SS) or a low-power wake-up signal (LP-WUS) is configured on the same carrier or a different carrier used by the associated cell, and signaling parameters; and determining the SCS parameters used by LP-SS / LP-WUS based on the indication information and the signaling parameters included in the received first SIB information.

[0007] Preferably, the step of determining the SCS parameters used by LP-SS / LP-WUS includes: when the indication information indicates that the cell definition synchronization signal block CD-SSB of the UE's associated cell is not on the same carrier as LP-SS, determining the subcarrier spacing SCS parameters of LP-SS according to the signaling parameters; and when the indication information indicates that the CD-SSB of the UE's associated cell is on the same carrier as LP-SS, setting the SCS of LP-SS to be the same as the SCS of the initial downlink bandwidth portion BWP of the associated cell.

[0008] Preferably, when the carrier is in the FR1 band, the initial downlink BWP is an initial downlink BWP that includes CD-SSB.

[0009] Preferably, the initial downlink BWP is a downlink BWP that includes a paging search space or is used for paging PDCCH detection.

[0010] Preferably, the step of determining the SCS parameters used by LP-SS / LP-WUS includes: when the indication information indicates that the cell definition synchronization signal block CD-SSB associated with the LP-SS of the UE's associated cell is on the same carrier as the LP-SS, and when CD-SSB and the initial downlink bandwidth portion BWP have the same SCS, the SCS parameters of CD-SSB are set to the SCS parameters of LP-SS / LP-WUS; otherwise, the SCS parameters of LP-SS configured by the base station are set to the SCS parameters of LP-SS / LP-WUS.

[0011] Furthermore, according to this disclosure, a method executed by a user equipment (UE) is proposed, comprising:

[0012] Once the conditions for detecting the low-power wake-up signal LP-WUS are met, the LO (Location of Detection) for LP-WUS, i.e., the LP-WUS opportunity, is determined based on the offset value.

[0013] Determine the distance from the LO to the paging opportunity PO associated with the offset value on the paging cycle; and

[0014] When it is determined that the interval is less than all wake-up delay values ​​reported by the UE, at least one of the following processes is performed according to a first indication configured by the base station and / or a second indication configured by the core network CN:

[0015] LP-WUS is not detected, and the decision to detect the paging PDCCH on the PO is not based on the wake-up indication in LP-WUS. Instead, the paging PDCCH is detected on the PO on each paging cycle according to the configuration of discontinuous DRX reception; and

[0016] Detect LP-WUS. When LP-WUS that wakes up the UE is detected on the LO, detect the PO of the first UE that can meet the wake-up delay after the LO.

[0017] Preferably, the PO of the first UE that can satisfy the wake-up delay is any one of the following: the PO to LO distance is greater than or equal to the minimum wake-up delay reported by the UE; and the PO to LO distance is greater than or equal to the highest priority wake-up delay reported by the UE.

[0018] Furthermore, 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, while minimizing system overhead, the UE can determine the relevant parameters for LP-WUS and LP-SS reception based on the network configuration. Furthermore, when the LO-PO distance determined by the offset configured by the base station is less than the total wake-up delay value reported by the UE, the UE can correctly detect LP-WUS, thereby saving UE power consumption and improving user experience. 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 This is a schematic diagram showing the PO of a UE in a paging cycle according to this disclosure.

[0023] Figure 2This is a flowchart illustrating a method performed by a user equipment according to Embodiment 1 of the present disclosure.

[0024] Figure 3 This is a flowchart illustrating a method performed by a user equipment according to Embodiment 2 of the present disclosure.

[0025] Figure 4 This is a flowchart illustrating a method performed by a user equipment according to Embodiment 3 of the present disclosure.

[0026] Figure 5 This is a block diagram representing the user equipment (UE) involved in this disclosure. Detailed Implementation

[0027] 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.

[0028] 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.

[0029] 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.

[0030] 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.

[0031] 3GPP: 3rd Generation Partnership Project

[0032] LTE: Long Term Evolution

[0033] NR: New Radio, New Wireless, New Air Interface

[0034] UE: User Equipment

[0035] gNB: NR base station

[0036] BWP: Bandwidth Part

[0037] SFN: System flame number, system frame number

[0038] OFDM: Orthogonal Frequency Division Multiplexing

[0039] SCS: Sub-carrier spacing

[0040] RB: Resource Block

[0041] TDD: Time Division Duplexing

[0042] FDD: Frequency Division Duplexing

[0043] CSI: Channel State Information

[0044] DCI: Downlink Control Information

[0045] CRC: Cyclic Redundancy Check

[0046] QCL: Quasi-co-location

[0047] HARQ: Hybrid Automatic Repeat Request.

[0048] CORESET: Control resource set.

[0049] MIB: Master Information Block

[0050] SIB: System Information Block

[0051] SSB: SS / PBCH block, Synchronization Signal / Physical Broadcast Channel Block

[0052] SRS: Sounding Reference Signal

[0053] DMRS: Demodulation Reference Signal

[0054] CSI-RS: Channel State Information Reference Signal

[0055] RACH: random-access channel

[0056] PBCH: Physical broadcast channel

[0057] PUCCH: Physical Uplink Control Channel

[0058] PUSCH: Physical Uplink Shared Channel

[0059] PRACH: Physical random-access channel

[0060] PDSCH: Physical downlink shared channel

[0061] PDCCH: Physical downlink control channel

[0062] UL-SCH: Uplink Shared Channel

[0063] DL-SCH: Downlink Shared Channel

[0064] C-RNTI: Cell Radio Network Temporary Identifier

[0065] P-RNTI: Paging RNTI, Temporary Identifier for Paging Wireless Network

[0066] RA-RNTI: Random Access RNTI, Temporary Identifier for Random Access Wireless Networks

[0067] CS-RNTI: Configured Scheduling RNTI, a temporary identifier for configuring and scheduling wireless networks.

[0068] SI-RNTI: System Information RNTI, Temporary Identifier for Wireless Networks

[0069] TC-RNTI: Temporary C-RNTI, Temporary Cell Radio Network Identifier

[0070] LP-WUS: Low Power Wake-Up Signal

[0071] RRiV: Radio Resource Management

[0072] RRC: Radio Resource Control

[0073] TCI: Transmission Configuration Indicator

[0074] MSB: Most Significant Bit

[0075] LSB: Least Significant Bit

[0076] PO: paging occasion

[0077] PF: paging frame

[0078] RRM: Radio Resource Management

[0079] PCI: Physical Cell Identifier

[0080] UAI: UE Assistance Information

[0081] 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.

[0082] It is worth noting that the user equipment (UE) involved in this disclosure refers to any end device that accesses a communication network and receives services from it, 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. This disclosure does not specifically distinguish or limit these different terms in its descriptions 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 other forms of network equipment can be easily used to replace it in specific implementations.

[0083] 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 radio transmission based on the paging information and related signaling to transmit service data.

[0084] To receive paging information from the network, the UE can determine several paging cycles (DRXcycles) and the location of paging occasions (POs) within each paging cycle based on network configuration parameters, and detect the paging PDCCH on the PDCCH monitoring occasion (MO) of the paging occasion. If the UE detects the paging PDCCH, it performs relevant processing based on the information indicated in the DCI transmitted by the detected PDCCH, such as receiving the paging PDSCH or receiving a short message. According to relevant protocols in NR (e.g., 38.304v17.0.0), an idle or inactive UE can determine a PO for detecting its own paging information in each DRX cycle. In a specific example, the UE can determine several paging parameters based on network configuration: the paging cycle parameter value T, which represents the length of a paging cycle as T frames (also called radio frames); the number of paging frames (PFs) N in a paging cycle; and the number of POs Ns for a PF, etc. A paging frame is a radio frame and may contain one or more Points of Interest (POs) or the start of a PO. This can be simply referred to as a PF associated with or containing Ns POs. For simplicity, this PF can be called the PF of a PO, and the PO can also be simply called the PO of the PF or the PO associated with the PF; therefore, the PF used to determine the PO for the UE can also be called the UE's PF. A paging opportunity (PO) consists of several PDCCH monitoring occasion forpaging (PDCCH MO, or simply MO). When using multi-beam transmission in the network, different MOs can correspond to different beams, allowing user equipment using different downlink beams to obtain better reception. In each paging cycle, the user equipment determines a PO to detect the paging PDCCH. Then, the user equipment can select the MO in the PO to detect the PDCCH based on relevant conditions. For example, the user equipment may select the MO using one or more SSB beams for paging PDCCH detection based on SSB measurement information. The UE can determine the PO used to detect its own paging information based on these configured paging parameters.

[0085] For example, based on relevant configuration parameters, there are N paging frames in T radio frames of a paging cycle. The user equipment (UE) determines one paging frame (PF) in the paging cycle as the paging frame used by the UE to detect paging information. When a paging frame PF has multiple POs, the UE determines one of them as the UE's PO. The UE can obtain the frame number (SFN) of the PF corresponding to the PO that the user needs to detect based on parameters such as the UE_ID. The SFN is determined to satisfy the following conditions:

[0086] (SFN+PF_offset)mod T=(T / N)*(UE_ID mod N)

[0087] Wherein, PF_offset is the offset value configured by the network to determine the paging frame, T is the paging cycle parameter determined by the user equipment, N is the number of paging frames in a paging cycle, mod is the modulo operation, and UE_ID is the UE identifier value used to determine the paging parameters according to the relevant protocol in NR (e.g., 38.304v17.0.0), such as using some low bits of 5G-S-TMSI.

[0088] The UE determines the frame number of the paging frame (PF) and then determines the PO to be detected. Depending on the network configuration, one PF can be associated with Ns POs. The UE checks the relevant PDCCH on the MO of one of the POs to determine if there is a corresponding paging message, etc. This PO can also be called the UE's PO. For example, the user equipment can determine the PO to be detected based on the PO's sequence number i_s, where i_s can be obtained according to the following formula:

[0089] i_S = floor(UE_ID / N) mod Ns

[0090] Where Ns is the number of POs in one PF, which the UE can obtain from ns in the paging channel parameters. floor is the floor operation. mod is the modulo operation.

[0091] A specific example is as follows Figure 1 As shown. Figure 1 In this process, the UE can determine the SFN of the PF based on the aforementioned process and parameters such as UE_ID. Here, Ns = 2. The UE can also determine the sequence number of the UE's PO in the PF's POs, i_s = 1. Then, the UE can determine the position of the PO that needs to be detected in the paging PDCCH during the paging cycle, which is the UE's PO in the figure. The figure only shows the schematic diagram of the UE's PO in two consecutive paging cycles. The situations in other paging cycles and examples using other paging parameters can be obtained similarly.

[0092] After the User Equipment (UE) determines the Point of Purchase (PO), it can determine the information of each Detection Opportunity (MO) based on parameters such as the search space set of the paging PDCCH configured in the network. For example, starting from the PF radio frame, the UE can determine the sequence number of the PO associated with the PF and the S*X consecutive MOs of the PO based on the search space set configuration and CORESET configuration of the paging PDCCH. Here, S is the number of SSBs actually transmitted in one SSB cycle in the network, i.e., the number of SSB beams, which can be determined, for example, by the ssb-PositionsInBurst parameter in SIB1. The default value of X is 1, but it can also be configured by higher layers. Each of the S MOs of the PO is associated with S different SSB sequence numbers, or in other words, they satisfy the QCL relationship according to the SSB numbering order. At this point, the MO of the x*S+Kth paging PDCCH is the PO associated with the Kth transmitted SSB, where x is a value of 0, 1, ..., X-1, and K is a value of 1, 2, ..., S. The paging PDCCH MO does not overlap with uplink symbols and is sequentially numbered starting from 0, beginning with the first paging PDCCH MO of the PF. Optionally, if additional time slots and / or symbol offset parameters are configured, the UE also determines the specific location of the MO from an offset following the PF radio frame.

[0093] User equipment can perform paging PDCCH detection on relevant time-frequency resources according to the method described above. The DCI in the paging PDCCH contains information such as whether the user needs to receive a corresponding paging message, whether there is a specific short message, etc. If a paging message is to be received, the DCI also indicates the PDSCH resource parameters used to transmit the paging message, including time-domain resources, frequency-domain resources, modulation scheme, etc. The user equipment can receive the paging PDSCH according to these parameters.

[0094] Based on the methods described above, several UEs within the same cell may detect the same PO. This means that the paging information transmitted on the PO via PDCCH and the scheduled PDSCH may be used to indicate the paging information of one or more of these UEs. Typically, UEs need to periodically detect relevant paging information, even if the paging information does not indicate data transmission related to the UE or the paging message is unrelated to the UE. Such periodic detection of PDCCH and PDSCH consumes significant UE power, thus affecting battery life and reducing user experience.

[0095] One feasible method is for the user equipment (UE) to use a low-power wake-up receiver (LR) to detect the wake-up signal (WUS) sent by the base station. When there is no data transmission, the UE's main radio (MR) remains in sleep mode to minimize power consumption. When data needs to be transmitted, the base station notifies the UE via the WUS. When the UE detects the indication carried in the WUS, it wakes up the MR and performs corresponding data processing. Since this WUS is used for low-power receiver detection, it can also be called LP-WUS (lowpower LP-WUS). It may also be referred to simply as WUS below. The LP-WUS signal may contain relevant information needed to wake up the UE, such as information related to the UE ID, indication bits corresponding to the UE or UE packet, codeword values ​​related to the UE or UE packet, or specific sequences corresponding to the UE or UE packet, etc. The UE can determine whether it has been woken up by the LP-WUS signal based on the information in the LP-WUS. The UE only wakes up the master receiver to perform relevant data transmission when it detects a wake-up indication message for itself, a user group, or all users. This includes detecting the paging PDCCH on the associated paging opportunity (PO) or transmitting PRACH within the corresponding window. In this way, the UE can maintain its connection to the network with minimal power consumption and without affecting its response latency to network paging. When implementing LR and MR functions, the UE may not necessarily use a separate device; it may simply be a logical division of internal devices. No specific limitations are made here.

[0096] In NR networks, base stations can configure one or more sets of LP-WUS resources and other parameters. UEs can determine several time-frequency resources based on these parameters for detecting relevant LP-WUS signals. UEs can detect LP-WUS on the LP-WUS resources determined by these parameters. Since these resources repeat periodically in time, and base stations do not always transmit LP-WUS signals on all resources (for example, if no UE needs to be woken up on a paging cycle, LP-WUS may not be transmitted), these time-frequency resources that may be used to transmit LP-WUS are also called LP-WUS monitoring occasions (LMOs). Base stations may use beam (also called spatial filters) scanning to cover the cell, with different LMOs using different beams to transmit LP-WUS, allowing the UE to select the LMO with the optimal beam for LP-WUS detection. Base stations may also use repetition to transmit the same LP-WUS information on multiple LMOs using the same beam to improve the performance of UE-side LP-WUS reception and detection. Additionally, the base station may use LMO to transmit different LP-WUS to indicate information about different UEs associated with the same PO. In this case, the set of several LMOs can be called a LO (LP-WUS occasion). For simplicity, a LO can be said to contain or be associated with several LMOs, and the LMOs can be called the LMOs of the LO. The UE can determine the LOs to be detected according to the relevant configuration and detect LP-WUS on the LMOs therein. In this disclosure, for ease of description, sometimes the description is from the perspective of the base station configuring LO / LMO resources, and sometimes it is from the perspective of the UE detecting LO / LMOs. These two descriptions can be considered equivalent and interchangeable.

[0097] LP-WUS signals can be transmitted using OOK (On-Off Keying) waveforms to reduce receiver complexity and UE power consumption. For compatibility with existing NR equipment, OOK can be generated using methods compatible with downlink CP-OFDM symbols in NR, such as the base station using DFT-IFFT to generate the OOK symbols for the LP-WUS signal. In this case, within the bandwidth of the LP-WUS signal, an OFDM symbol can contain an integer M OOK symbols, for example, M being an integer from 1 / 2 / 4 / 8 / 16, making it easy for the base station to transmit signals with different waveforms. Therefore, the length, location, and other parameters of relevant LP-WUS resources, or LO or LMO in the time domain, can also be described using OFDM symbols, time slots, frames, and other parameters. When generating LP-WUS waveforms, base stations may use different multicarrier parameters to generate OOK symbols. For example, they may use CP-OFDM symbols with different subcarrier spacings (SCS) for LP-WUS / LP-SS generation. In this case, the SCS parameters can be simply referred to as the SCS parameters of LP-WUS or LP-SS.

[0098] In NR, the SCS (Self-Controlled Cross-Signal) parameter can have different values ​​for different frequency bands. For example, for the FR1 band, an SCS of 15kHz or 30kHz can be used for downlink signal transmission; for the FR2 band, an SCS of 60kHz or 120kHz can be used; and for the FR2-2 band, an SCS of 480kHz or 960kHz may also be used. These SCS parameters are typically represented by the u parameter in NR, for example, an SCS of 2... u *15kHz means that u=0 corresponds to an SCS of 15kHz; u=1 corresponds to an SCS of 30kHz; ...; u=6 corresponds to an SCS of 960kHz, and so on. Using the u parameter to describe the SCS is completely equivalent to directly using the size of the SCS (e.g., 15kHz / 30kHz...).

[0099] In addition, the LP-WUS transmitted by the base station occupies a certain amount of bandwidth. For ease of implementation, the bandwidth used by LP-WUS can also be configured / described using the number of carriers (i.e., the number of REs, which can also be converted into the number of RBs) of the CP-OFDM symbols. Furthermore, for ease of implementation by the UE receiver, 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.

[0100] 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.

[0101] If the base station provides LP-WUS related resource configuration, and the UE has the capability to perform LP-WUS detection, and the measurement values ​​used to determine whether the UE meets the LP-WUS detection conditions also meet the threshold requirements, the UE can apply relevant procedures to detect LP-WUS on the LO. For example, the UE can detect the LO according to a configured period, and the UE detects at least one LO in each period. This period can be called a LO monitoring cycle. The LO monitoring cycle may have different names, such as LP-WUS minitoring cycle, LP-WUS detection period, or LO detection period, etc. In the following text, we will use LO monitoring cycle for related explanations. Since the UE detects the LO to determine whether the PO needs to detect the PDCCH in the corresponding paging cycle, the monitoring cycle can be related to the UE's paging cycle. For example, the monitoring cycle (length) is always equal to the paging cycle (length) used by the UE. In this case, the base station does not need to specifically configure relevant LO monitoring cycle parameters for the UE, and the UE can use the determined paging cycle length to determine the LO monitoring cycle length.

[0102] When a UE receives LP-SS or LP-WUS according to the network configuration, it needs to determine the relevant LP-SS or LP-WUS parameters, such as SCS parameters and the distance between the LO and PO. Furthermore, during LP-WUS detection, if the distance between the LO and PO cannot meet the UE's requirements, the UE will also perform related actions according to network instructions. This disclosure uses a UE in an idle state (RRC_IDLE state) or an inactive state (RRC_INACTIVE 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 a UE in other states, such as a UE in a connected state (RRC_CONNECTED state), may also apply similar methods or certain steps, it can be easily implemented by analogy, and will not be described in detail here. The following embodiments are provided to describe the implementation of this disclosure in more detail.

[0103] Below, with reference to the accompanying drawings, a summary description of the implementation method of the UE determining LP-SS / LP-WUS parameters and detecting PO according to network instructions in this disclosure is provided.

[0104] The implementation of each step in this disclosure will be described in more detail below in specific embodiments.

[0105]

Example 1

[0106] When a UE receives services from a wireless network, it typically needs to select and camp on a cell to receive system messages and paging information. The UE's Mobile Receiver (MR) can receive SSB, PDCCH, and other related signals and channels on this cell. When the UE supports LP-WUS, the cell used by the UE to receive system messages and paging information can be called the LP-WUS associated cell. The UE can determine whether to wake up the MR on the associated cell to detect paging PDCCH based on the LP-WUS indication. The associated cell usually has a CD-SSB (Cell Defining SSB), on which PSS / SSS and PBCH (PBCH carries MIB) are transmitted. The SSB usually uses a predefined structure, so the UE can determine the SCS parameters of the CD-SSB based on the frequency band of the SSB and the detection results. Additionally, the UE can determine the SCS parameters used for transmitting SIB1, paging information, etc., on this cell, as well as parameters such as the common CORESET (i.e., CORESET#0) and common search space, based on the MIB, for PDCCH / PDSCH reception. The UE can determine the initial downlink BWP in the associated cell according to a certain method, which is used to receive relevant downlink information, such as SIB information, paging information, random access response information, etc.

[0107] For example, the UE can receive the initialDownlinkBWP parameters configured by the base station in the SIB1 information of the associated cell to determine various parameters of the initial downlink BWP, including the SCS parameters, frequency domain position, and bandwidth of the initial downlink BWP. If the base station does not configure the initialDownlinkBWP parameters, the UE can determine the initial downlink BWP as a series of consecutive PRBs based on relevant parameters in the MIB. For example, based on the CORESET (i.e., CORESET#0) used to receive the type0-PDCCH common search space set, the bandwidth of the initial downlink BWP can be determined from the lowest sequence PRB to the highest sequence PRB, and the SCS parameters of the initial downlink BWP can be the SCS parameters indicated in the MIB used for transmitting SIB1, paging information, etc. The parameter set used to configure the initial downlink BWP can contain parameter configurations for several channels, such as the Type2-PDCCH common search space set (i.e., paging search space set) parameters used for receiving and scheduling the PDCCH for paging information transmission, and the Type1-PDCCH common search space set used for receiving and scheduling the transmission of related channels during random access. When no paging search space parameters are configured on the initial downlink BWP, the UE can use the PDCCH search space set used to receive SIB1 to detect paging PDCCH information. The SIB1 information also includes carrier information used by the associated cell, such as configuring the downlink carrier via frequencyInfoDL, including the absolute frequency parameters of reference point A. The UE can determine the absolute frequency domain position of the downlink BWP in that cell based on the downlink carrier configuration. The downlink carrier used by the associated cell is also the carrier used by the SSB (i.e., CD-SSB) for the UE to obtain SIB1.

[0108] Due to the characteristics of LP-WUS / LP-SS and LR, the UE may not support LP-WUS / LP-SS reception on all frequency bands supported by the UE. Furthermore, the reception performance of LP-WUS / LP-SS may differ from that of other downlink signals transmitted in NR. In such cases, the base station can configure the carrier used for LP-WUS / LP-SS on the same carrier or a different carrier / frequency band as the carrier used by the UE's associated cell, depending on the requirements of different deployment scenarios. On the other hand, when the base station configures LP-WUS / LP-SS and the UE's associated cell on the same carrier, it may also configure LP-WUS / LP-SS and the downlink initial BWP on the same or different bandwidths. This allows the base station to flexibly configure system resources, optimizing system resource utilization.

[0109] LP-SS / LP-WUS typically also uses multi-beam transmission for better UE coverage within the cell. The beams used by LP-SS / LP-WUS can satisfy a QCL relationship with the beams of an SSB, which can also be called the associated SSB of LP-SS / LP-WUS. The associated SSB may be an SSB on the associated cell or another SSB. For example, when LP-SS / LP-WUS and the associated cell share the same carrier, the CD-SSB of the associated cell is the associated SSB of LP-SS / LP-WUS.

[0110] When receiving LP-SS / LP-WUS, the UE needs to determine the relevant parameters of LP-SS / LP-WUS, such as the position of the LP-SS / LP-WUS bandwidth in the frequency domain, SCS parameters, the starting position of the symbols used in the time domain, the number of symbols occupied, etc.

[0111] Figure 2 This is a flowchart illustrating a method performed by a user equipment according to Embodiment 1 of the present disclosure.

[0112] like Figure 2 As shown, in step 201, the UE receives SIB information on the associated cell. The SIB information includes indication information for indicating whether the LP-SS / LP-WUS is configured on the same carrier or a different carrier used by the associated cell, as well as signaling parameters.

[0113] In step 203, the UE determines a portion of the parameters used by LP-SS / LP-WUS based on the SIB information, such as the configuration information of the carrier where LP-SS / LP-WUS is located.

[0114] In an optional embodiment, when configuring LP-SS / LP-WUS resources, the base station may configure LP-SS / LP-WUS on the same carrier or different carriers of the UE's associated cell (associated cell). The UE can determine the parameters used for the relevant LP-SS / LP-WUS according to the relevant configuration.

[0115] When configuring LP-SS / LP-WUS for a UE, the base station can configure some parameters through an SIB (possibly in SIB1 or other SIBs), such as LP-SS configuration, LP-WUS configuration, and conditions for LP-WUS detection (entry or exit conditions), etc. The UE can obtain all the LP-SS / LP-WUS configuration parameters based on these LP-SS / LP-WUS configurations and their relationship with carriers or the initial downlink BWP in the associated cell, for use in LP-SS or LP-WUS reception.

[0116] The base station can indicate whether the LP-SS / LP-WUS is configured on the same carrier as the carrier used by the associated cell or on a different carrier. The corresponding indication information may be given to the UE in different forms, such as by indicating the presence or absence of downlink carrier configuration parameters for the LP-SS / LP-WUS. In a specific example, the LP-SS configuration parameters provided by the base station include downlink carrier configuration parameters. The UE determines the absolute frequency domain position of the LP-SS based on the position of reference point A in the downlink carrier configuration. In this case, the UE determines that the LP-SS and the carrier of the associated cell are different carriers. In another example, the LP-SS configuration parameters provided by the base station do not include downlink carrier configuration. The UE determines that the LP-SS and the carrier of the associated cell are the same carrier, and the UE can determine the absolute frequency domain position of the LP-SS based on the downlink carrier configuration of the associated cell.

[0117] In one aspect of an optional embodiment of this disclosure, the UE determines the SCS configuration parameters of the LP-SS based on the carrier of the LP-SS and whether it is the same carrier as the downlink carrier of the associated cell.

[0118] In one optional example, when the downlink carrier of the associated cell is not the same as the carrier of the LP-SS, the UE determines the SCS parameter of the LP-SS based on the SCS parameter configured in the LP-SS parameters; when the downlink carrier of the associated cell is the same as the LP-SS carrier, the SCS of the LP-SS is the same as the SCS of the initial downlink BWP, that is, the UE determines the SCS parameter of the LP-SS based on the SCS of the initial downlink BWP. For the FR1 band, this initial downlink BWP is the initial downlink BWP that includes all CD-SSBs.

[0119] In another optional example, the base station always configures the SCS parameters of the LP-SS in the LP-SS configuration parameters, and the UE can determine the SCS parameters of the LP-SS based on the configured SCS parameters. When the downlink carrier of the associated cell and the LP-SS are on the same carrier, the UE expects the configured SCS parameters to always be the same as the SCS of the initial downlink BWP. For the FR1 band, this initial downlink BWP is the initial downlink BWP that includes the CD-SSB.

[0120] LP-WUS uses the same SCS parameters as LP-SS. That is, the UE can use the determined SCS parameters of LP-SS as the SCS parameters of LP-WUS for LP-WUS reception.

[0121] For certain device types in the network, in addition to the initial downlink BWP determined by the initialDownlinkBWP parameter or CORESET#0, the base station may also configure another initial downlink BWP for data transmission related to that type of device. For example, the base station can also configure the initialDownlinkBWP-RedCap parameter in the DownlinkConfigCommonSIB cell in SIB1 to configure the initial downlink BWP for decommissioned UEs (RedCap UEs).

[0122] In another aspect of an optional embodiment of this disclosure, for a RedCap UE, the UE determines the SCS of the LP-SS based on the SCS of the initial downlink BWP containing the paging search space configuration or the SCS of the initial downlink BWP used for paging PDCCH detection. In a specific example, the RedCap UE can determine an initial downlink BWP based on initialDownlinkBWP-RedCap, on which the UE of this device type detects the PDCCH of the type 1-PDCCH common search space. If the initial downlink BWP does not contain the paging search space configuration, the UE does not expect the initial downlink BWP to contain CD-SSB and CORESET#0. In this case, the UE should use the SCS parameters of the common (not determined by initialDownlinkBWP-RedCap) downlink initial BWP to determine the LP-WUS / LP-SS parameters.

[0123] In another aspect of the optional embodiments of this disclosure, when generating LP-WUS / LP-SS signals in a wireless system, the M parameter can also be used to carry M OOK symbols on one OFDM symbol. M can be greater than 1, thereby improving the transmission efficiency of LP-SS / LP-WUS. Typically, the base station can configure M to be a value from the set {1, 2, 4} to generate LP-WUS / LP-SS signals. According to the relevant definitions in NR, OFDM symbols using different SCS have different lengths in the time domain. Generally, the larger the SCS used, the smaller the length of a symbol in the time domain. Therefore, when a larger SCS is applied, if a larger M is also used, the time domain length of each LP-SS / LP-WUS OOK symbol will be very small. Therefore, when using a larger SCS parameter, using a larger M requires a higher capability of the LR receiver.

[0124] In another aspect of the optional embodiments of this disclosure, the UE further determines the SCS of LP-WUS / LP-SS based on the configured M. As an optional example, for the FR1 band, when the configured M of LP-SS or LP-WUS is 4, the UE determines the SCS of LP-SS and LP-WUS to be 15kHz, or the UE expects the SCS of LP-SS / LP-WUS configured by the base station to be 15kHz; for the FR2 band, the UE determines the SCS parameters of LP-SS / LP-WUS based on the base station configuration or the SCS parameters of the downlink initial BWP.

[0125]

Example 2

[0126] When configuring the SSB and initial downlink BWP, the base station can use different SCS parameters to obtain more flexibility. For example, the SCS of the SSB can be 30kHz, and the SCS of the initial downlink BWP can be 15kHz. Since the SSB occupies a fixed number of symbols, more available symbols can be obtained on the initial downlink BWP for transmission on other channels. In an optional embodiment of this disclosure, the UE can also determine the SCS parameters of LP-SS / LP-WUS based on the SCS configuration of the SSB and the initial downlink BWP.

[0127] Figure 3 This is a flowchart illustrating a method performed by a user equipment according to Embodiment 2 of the present disclosure.

[0128] like Figure 3 As shown, in step 301, the UE receives the configuration of SSB and initial downlink BWP on the associated cell and determines the SCS parameters used by SSB and initial downlink BWP.

[0129] In step 303, the UE receives SIB information, which includes indication information for indicating whether the LP-SS / LP-WUS is configured on the same carrier as or a different carrier used by the associated cell, as well as signaling parameters.

[0130] In step 305, the UE determines the parameters used by LP-SS / LP-WUS based on the SIB information and the SCS parameters used by the SSB and the initial downlink BWP.

[0131] In one optional embodiment, when the downlink carrier of the associated cell and the LP-SS carrier are the same carrier, the UE determines the SCS parameters of the LP-SS according to one of the following methods.

[0132] - When the CD-SSB of the associated cell has the same SCS as the initial downlink BWP, the UE determines the SCS of LP-SS / LP-WUS based on the SCS of CD-SSB, for example, using the SCS of CD-SSB as the SCS of LP-SS / LP-WUS.

[0133] - When the CD-SSB of the associated cell has a different SCS than the initial downlink BWP, the UE determines the SCS parameters of the LP-SS network configuration based on at least one of the following:

[0134] ■ SCS parameters of LP-SS configured in the base station

[0135] ■ When the base station does not configure the SCS parameters for the LP-SS, the UE determines the SCS parameters for the LP-SS based on the relationship between the CD-SSB and the SCS of the initial downlink BWP. For example, the smaller value between the CD-SSB and the SCS of the initial downlink BWP can be used as the SCS for the LP-SS. This allows the system to have less stringent requirements on the UE's reception capabilities.

[0136] In one optional embodiment, when the downlink carrier of the associated cell and the carrier of the LP-SS are not the same carrier, the base station may configure an NCD-SSB (Non-Cell Defining SSB) as the SSB associated with the LP-SS for the UE. When the base station configures the SCS parameters of the LP-SS, the UE uses the SCS of the NCD-SSB as the SCS parameters of the LP-SS; when the base station does not configure the SCS parameters of the LP-SS, the UE uses the SCS of the NCD-SSB as the SCS parameters of the LP-SS.

[0137] LP-WUS uses the same SCS parameters as LP-SS. This means the UE can use the determined LP-SS SCS parameters as the LP-WUS SCS parameters for LP-WUS reception. Alternatively, the UE can expect the base station to configure the LP-WUS SCS parameters to be the same as the LP-SS SCS parameters.

[0138]

Example 3

[0139] The UE may support different MR sleep states to adapt to different needs. For example, it may use a deep sleep state to minimize power consumption or a shallow sleep state to quickly respond to service demands. The time required for the UE to transition from different sleep states to an active state (e.g., to detect paging PDCCH) varies, corresponding to different wake-up delay values. The UE can report one or more wake-up delays to the base station via relevant signaling (e.g., UE capability reports), allowing the base station to determine the UE's wake-up requirements from different states.

[0140] When reporting wake-up delay, the UE may use various methods, such as reporting the total delay time, or breaking down the delay time into several parts, such as state transition time + synchronization time (e.g., the required number of SSBs), state transition time + synchronization time + carrier tuning time, etc. The base station can obtain the total wake-up delay for one or more states required by the UE based on the reported values.

[0141] In addition to reporting wake-up delays, the UE can also report its preferences, including the sleep states or their priorities. The UE may report its preferences simultaneously with each wake-up delay; or it may report its preferences using independent signaling, such as reporting the highest-priority wake-up delay or the priorities of each wake-up delay via UAI signaling. If the base station does not receive the UE's preferences or the UE does not send preferences, the base station can determine the priority of each delay time according to a default order, such as sorting the delay times from smallest to largest.

[0142] When a UE supports LP-WUS, it can determine whether to detect LP-WUS based on certain conditions, such as whether the RSRP of the measured LP-SS reaches a certain threshold, or whether the measured value of the associated cell (such as SS-RSRP) reaches a certain threshold, etc.

[0143] Figure 4 This is a flowchart illustrating a method performed by a user equipment according to Embodiment 3 of the present disclosure.

[0144] like Figure 4 As shown, in step 401, if the UE determines that the conditions for detecting LP-WUS are met, the relevant LO is determined according to the base station configuration. Specifically, LP-WUS detection on the LO and PO detection are determined according to the following method.

[0145] The base station can configure the time-domain location of the LO by configuring the offset from the reference PO or reference PF. For example, if the base station configures an offset value, the UE can determine the reference PO or reference PF in a paging cycle using a certain method, and then determine an LO based on the offset value. The UE can also determine its PO in the same paging cycle for detecting the paging PDCCH. This PO and LO are associated through the offset value.

[0146] In step 403, the UE also determines the gap between the LO and the PO (i.e., the PO associated with the offset value) on the paging cycle. An LMO on a LO may be divided into several LMO groups for transmitting different (content-based) LP-WUS. The UE can detect all or some LMO groups depending on the network configuration. The base station may transmit LP-WUS using multiple beams or repeated LMOs within an LMO group. The UE determines the gap as the distance from the end of the last beam / repeated LMO of the last LMO group detected by the UE on the LO to the start of the associated PO. In one example, without specific indication, the UE determines that all LMOs in the LO should be detected, and the UE determines the gap as the distance from the end of the last LMO in the LO to the associated PO. In another example, the UE determines that some LMOs in the LO should be detected (e.g., the LMOs of the first K LMO groups), and the UE determines the gap as the distance from the end of the last LMO of this portion of the LO to the start of the associated PO.

[0147] Typically, the UE detects LP-WUS on the LO. If a wake-up indication is detected, the UE can detect the paging PDCCH on the associated PO after completing the state transition. The UE needs to determine whether the distance between the LO and PO meets the UE's wake-up delay requirements. If this distance is greater than a certain wake-up delay time reported by the UE, the UE can detect LP-WUS on the LO.

[0148] In step 405, if this interval is less than all wake-up delay values ​​reported by the UE, that is, if the UE cannot detect a wake-up indication on a LO but can detect a paging PDCCH on the associated PO, the UE may perform at least one of the following related processing methods according to the instructions of the base station and / or core network:

[0149] ● The UE does not detect LP-WUS. In this case, the UE does not determine whether to detect the paging PDCCH on the PO based on the wake-up indication in LP-WUS. For example, the UE may detect the paging PDCCH on the PO in each paging cycle according to the DRX configuration. If the UE supports PEI (Paging Early Indication) and the base station supports PEI (i.e., the relevant PEI parameters are configured), the UE can also detect the PO according to the PEI indication.

[0150] ●UE detects LP-WUS. When the UE detects LP-WUS for waking up the UE on the LO, the UE detects the first PO of the UE that can satisfy the wake-up delay after the LO, for example, the PO of the UE on the next paging cycle of the paging cycle associated with the PO; optionally, the first PO of the UE that satisfies the wake-up delay can be determined according to one of the following methods:

[0151] ■ The distance from PO to LO is greater than or equal to the minimum wake-up delay reported by the UE.

[0152] ■ The distance from PO to LO is greater than or equal to the wake-up delay of the highest priority reported by the UE.

[0153] In one aspect of the optional embodiments of this disclosure, if the UE cannot detect a wake-up indication on a LO but can detect a paging PDCCH on an associated PO, the UE may perform at least one of the aforementioned related processing methods according to the instructions of the base station and / or the core network. For example, when the base station supports the second method, it can configure a first indication parameter at the first protocol layer (RRC layer, e.g., in SIB signaling) to instruct the UE in the cell to apply the second method to determine the detection method of the associated PO when the distance between the determined LO and the associated PO is less than the wake-up delay reported by the UE. When this parameter is not present, the UE applies the first method to detect the associated PO. This configuration parameter is at the cell level, meaning that all UEs that meet the conditions for PO detection using this cell can determine the method to use according to the indication parameter.

[0154] On the other hand, the network can also instruct the UE to use one of the above methods through second-layer signaling (a higher layer than RRC, such as NAS signaling in the core network CN). For example, when instructing the UE to use the second method, the network can configure a second indication parameter in the second-layer signaling (e.g., NAS signaling in CN) to instruct the UE in the cell to apply the second method to determine the detection method of the relevant PO when the distance between the determined LO and the associated PO is less than the wake-up delay reported by the UE. When this parameter is not present, the UE applies the first method to detect the relevant PO. This configuration parameter is UE-level, meaning that all UEs that meet the conditions for PO detection using this cell can determine the method to use based on this indication parameter.

[0155] Optionally, when the distance between the LO determined by the UE and the associated PO is less than the total wake-up delay value reported by the UE, the UE determines one of the first or second methods to be used by the UE according to either the first or second indication (if any).

[0156] In one specific example, the base station configures a first indication parameter, but the network does not configure a second indication parameter for the UE; the UE uses the second method to detect the relevant PO according to the base station's indication. In another specific example, the base station does not configure the first indication parameter, but the network configures the second indication parameter for the UE via higher-layer signaling; the UE uses the second method to detect the relevant PO according to the network's indication. In yet another specific example, the base station does not configure the first indication parameter, and the network does not configure the second indication parameter for the UE; if neither indication parameter exists, the UE uses the first method to determine the detection method for the relevant PO.

[0157] Below, using Figure 5 This describes a user device that can perform the methods described in detail above as an embodiment of the present disclosure.

[0158] Figure 5 This is a block diagram representing the user equipment (UE) involved in this disclosure.

[0159] like Figure 5 As shown, the user equipment UE500 includes a processor 501 and a memory 502. The processor 501 may include, for example, a microprocessor, a microcontroller, an embedded processor, etc. The memory 502 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 502. When executed by the processor 501, these instructions can perform the methods described in detail herein, executed by the user equipment.

[0160] 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 indication information. These can be interchanged without contradiction; that is, "0" can be used to indicate information indicated by "1" in this disclosure, and "1" can be 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 incrementing 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.

[0161] 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.

[0162] 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.

[0163] 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.

[0164] 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.

[0165] 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 first System Information Block (SIB) information on the associated cell. The first SIB information includes indication information for indicating whether the Low Power Synchronization Signal (LP-SS) / Low Power Wake-up Signal (LP-WUS) is configured on the same carrier or a different carrier used by the associated cell, as well as signaling parameters; and Based on the indication information and signaling parameters included in the received first SIB information, the SCS parameters used by LP-SS / LP-WUS are determined.

2. The method according to claim 1, wherein, The steps to determine the SCS parameters used by LP-SS / LP-WUS include: When the indication information indicates that the cell definition synchronization signal block (CD-SSB) and LP-SS of the associated cell of the UE are not on the same carrier, the subcarrier spacing (SCS) parameter of LP-SS is determined according to the signaling parameters; and When the indication information indicates that the CD-SSB and LP-SS of the UE's associated cell are on the same carrier, the SCS of the LP-SS is set to be the same as the SCS of the initial downlink bandwidth portion (BWP) of the associated cell.

3. The method according to claim 2, wherein, When the carrier is in the FR1 band, the initial downlink BWP is an initial downlink BWP that includes CD-SSB.

4. The method according to claim 2, wherein, The initial downlink BWP is a downlink BWP that includes the paging search space or is used for paging PDCCH detection.

5. The method according to claim 1, wherein, The steps to determine the SCS parameters used by LP-SS / LP-WUS include: When the indication information indicates that the cell definition synchronization signal block CD-SSB associated with the LP-SS of the UE's associated cell is on the same carrier as the LP-SS, and CD-SSB has the same SCS as the initial downlink bandwidth portion BWP, the SCS parameter of CD-SSB is set to the SCS parameter of LP-SS / LP-WUS; otherwise, the SCS parameter of LP-SS configured by the base station is set to the SCS parameter of LP-SS / LP-WUS.

6. A method performed by a user equipment (UE), comprising: Once the conditions for detecting the low-power wake-up signal LP-WUS are met, the LO (Location of Detection) for LP-WUS, i.e., the LP-WUS opportunity, is determined based on the offset value. Determine the distance from the LO to the paging opportunity PO associated with the offset value on the paging cycle; as well as When it is determined that the interval is less than all wake-up delay values ​​reported by the UE, at least one of the following processes is performed according to a first indication configured by the base station and / or a second indication configured by the core network CN: LP-WUS is not detected, and the paging PDCCH is not determined on the PO based on the wake-up indication in LP-WUS. Instead, the paging PDCCH is detected on the PO on each paging cycle based on the configuration of discontinuous DRX reception. as well as Detect LP-WUS. When LP-WUS that wakes up the UE is detected on the LO, detect the PO of the first UE that can meet the wake-up delay after the LO.

7. The method according to claim 6, wherein, The PO of the first UE that can satisfy the wake-up delay is any one of the following: The distance from PO to LO must satisfy the requirement that the PO of the first UE is greater than or equal to the minimum wake-up delay reported by the UE; and The distance from PO to LO is greater than or equal to the PO of the first UE with the highest priority wake-up delay reported by the UE.

8. 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 7.

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