Method executed by user equipment, and user equipment

Abstract

The present disclosure provides a method executed by a user equipment (UE), and a UE. The method comprises: a UE reports a wake-up delay and the priority thereof; the UE determines a plurality of offset values from a plurality of offset parameters configured by a system, determines, on the basis of a determined reference point on a paging cycle and the plurality of offset values, a distance from a low power wake-up signal (LP-WUS) occasion (LO) to a paging occasion (PO), and determines, on the basis of the distance, and the wake-up delay and the priority thereof, an offset value among the plurality of offset values and an LO associated with the offset value; the UE determines, within the determined LO, an LP-WUS monitoring occasion (LMO) for the LO, and at least one of a beam index, a repetition index, and an LP-WUS index used by the LMO; and the UE monitors an LP-WUS on the determined LMO. By means of the method, the system overhead is minimized, and the UE can correctly detect the LP-WUS, thereby reducing the power consumption of the UE and improving the user experience.

Description

Methods executed by user equipment and user equipment Technical Field

[0001] This disclosure relates to the field of wireless communication technology, and more specifically to a method for determining downlink resources performed by a user equipment, related actions, and 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 (UEs) is also a key factor. Typically, UEs consume tens of milliwatts in RRC idle or inactive states and hundreds of milliwatts in RRC connected states. Depending on the application scenario, UEs may need to be charged weekly or daily. Therefore, further reducing UE 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) typically saves 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 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 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 signal and wakes up the primary receiver to perform the corresponding data processing. This allows the UE's service processing requirements 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 find a LO based on the UE's PO and several offset parameters configured by the base station when the idle UE searches for LP-WUS in the time domain, how to determine the LMO in the LO, and the beam parameters, repetition number, and LP-WUS number used by an LMO, etc. Summary of the Invention

[0005] To address at least some of the aforementioned problems, this disclosure provides a method and a user equipment (UE) that are executed by a user equipment, enabling the UE to find a local loop (LO) based on LP-WUS resource parameters and LO parameters configured by the base station, and to determine the LMO and the beam parameters, repetition number, and LP-WUS number used in the LO. This minimizes system overhead while allowing the UE to correctly detect LP-WUS, 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:

[0007] The UE reports the wake-up delay and its priority; the UE determines multiple offset values ​​from multiple offset parameters configured in the system, determines the distance from the low-power wake-up signal LP-WUS opportunity LO to the paging opportunity PO based on the reference point on the determined paging cycle and the multiple offset values, and determines an offset value and the LO associated with the offset value from the multiple offset values ​​based on the distance, the wake-up delay and its priority; the UE determines the LP-WUS detection opportunity LMO of the determined LO, and at least one of the beam number, repetition number and LP-WUS number used by the LMO; the UE detects LP-WUS on the determined LMO.

[0008] According to one aspect of the method of the present invention, the method of determining an offset value and an LO associated with the offset value from the plurality of offset values ​​based on the distance, the wake-up delay and their priorities further includes: the UE comparing the wake-up delay with the distances from the LOs to the POs associated with the plurality of offset values ​​in ascending order, in descending order of priority, using the wake-up delay; the UE selecting the first offset value whose distance is not less than the wake-up delay as the selected offset value, and determining the LO associated with the offset value as the LO detected by the UE.

[0009] According to one aspect of the method of the present invention, if the UE fails to determine an offset value according to the method, the UE performs one of the following methods according to the network's instructions:

[0010] - Use the largest offset value to determine the associated LO, and if the UE detects information on the LO instructing the UE to perform PO detection, the UE will detect the first PO after the LO whose distance from the LO satisfies the highest priority wake-up delay;

[0011] -UE does not perform LO detection.

[0012] According to one aspect of the method of the present invention, the UE determines multiple offset values ​​from multiple offset parameters configured by the system, including:

[0013] The difference between the plurality of offset values ​​is an integer multiple of a unit length, wherein the unit length is one of the following:

[0014] - The interval length of the paging frame;

[0015] - The length of the paging loop configured in the System Information Block (SIB).

[0016] According to one aspect of the method of the present invention, the UE determines the LP-WUS detection opportunity (LMO) from the determined LO, and at least one of the beam number, repetition number, and LP-WUS number used for the LMO further includes:

[0017] The beam number used by the LMO is determined based on the quasi-co-located QCL parameters of the LMO, and a certain number of LMOs are determined for each beam number to be used, based on the default order or instructions from higher layers, as well as at least one of the repeating numbers and LP-WUS numbers used by them.

[0018] According to one aspect of the method of the present invention, the UE detecting LP-WUS on the determined LMO further includes:

[0019] The UE determines whether to detect LMO for a portion of the LP-WUS sequence number based on network instructions, according to one of the following:

[0020] - UEs using the group sequence number configured by the higher layer;

[0021] - The UE uses the packet sequence number configured by the higher layer, and the higher layer instructs the UE to send LP-WUS first.

[0022] 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.

[0023] Invention Effects

[0024] According to this disclosure, the UE can find a LO and determine the LMO and the beam parameters, repetition number, and LP-WUS number used by the LMO in the LO based on the LP-WUS resource parameters and the LO parameters configured by the base station. This minimizes system overhead and enables the UE to correctly detect LP-WUS, thereby saving UE power consumption and improving user experience. Attached Figure Description

[0025] 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:

[0026] Figure 1 is a schematic diagram illustrating the PO of a UE in a paging cycle according to an embodiment of the present disclosure.

[0027] Figure 2 is a schematic diagram illustrating the basic process of a method performed by a user equipment (UE) in an embodiment of this disclosure.

[0028] Figure 3 is a schematic diagram illustrating an example of configuring multiple offset parameters in an embodiment of the present disclosure.

[0029] Figure 4 is a schematic diagram illustrating an example of determining the distance from LO to PO in an embodiment of this disclosure.

[0030] Figure 5 is a block diagram illustrating a user equipment (UE) according to an embodiment of the present disclosure. Detailed Implementation

[0031] 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.

[0032] 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.

[0033] 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.

[0034] 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.

[0035] 3GPP: 3rd Generation Partnership Project

[0036] LTE: Long Term Evolution

[0037] NR: New Radio, New Wireless, New Air Interface

[0038] UE: User Equipment

[0039] gNB: NR base station

[0040] BWP: Bandwidth Part

[0041] SFN: System frame number

[0042] OFDM: Orthogonal Frequency Division Multiplexing

[0043] SCS: Sub-carrier spacing

[0044] RB: Resource Block

[0045] TDD: Time Division Duplexing

[0046] FDD: Frequency Division Duplexing

[0047] CSI: Channel State Information

[0048] DCI: Downlink Control Information

[0049] CRC: Cyclic Redundancy Check

[0050] QCL: Quasi-co-location

[0051] HARQ: Hybrid Automatic Repeat Request.

[0052] CORESET: Control resource set.

[0053] MIB: Master Information Block

[0054] SIB: System Information Block

[0055] SSB: SS / PBCH block, Synchronization Signal / Physical Broadcast Channel Block

[0056] SRS: Sounding Reference Signal

[0057] DMRS: Demodulation Reference Signal

[0058] CSI-RS: Channel State Information Reference Signal

[0059] RACH: Random-access channel

[0060] PBCH: Physical broadcast channel

[0061] PUCCH: Physical Uplink Control Channel

[0062] PUSCH: Physical Uplink Shared Channel

[0063] PRACH: Physical random-access channel

[0064] PDSCH: Physical downlink shared channel

[0065] PDCCH: Physical downlink control channel

[0066] UL-SCH: Uplink Shared Channel

[0067] DL-SCH: Downlink Shared Channel

[0068] C-RNTI: Cell Radio Network Temporary Identifier

[0069] P-RNTI: Paging RNTI, Temporary Identifier for Paging Wireless Network

[0070] RA-RNTI: Random Access RNTI, Temporary Identifier for Random Access Wireless Networks

[0071] CS-RNTI: Configured Scheduling RNTI, a temporary identifier for configuring and scheduling wireless networks.

[0072] SI-RNTI: System Information RNTI, Temporary Identifier for Wireless Networks

[0073] TC-RNTI: Temporary C-RNTI, Temporary Cell Radio Network Identifier

[0074] LP-WUS: Low Power Wake-Up Signal

[0075] RRM: Radio Resource Management

[0076] RRC: Radio Resource Control

[0077] TCI: Transmission Configuration Indicator

[0078] MSB: Most Significant Bit

[0079] LSB: Least Significant Bit

[0080] PO: paging occasion

[0081] PF: paging frame

[0082] RRM: Radio Resource Management

[0083] PCI: Physical Cell Identifier

[0084] 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.

[0085] 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 the execution of related processes in this disclosure, terms such as "user" and "terminal" may also be used, and this disclosure does not make specific distinctions or limitations regarding the related descriptions using these different terms. Network equipment refers to equipment that communicates with the user equipment, including but not limited to wireless base stations, gNBs, eNBs, wireless access points, wireless repeaters, and user equipment with repeater capabilities. 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 substitutes.

[0086] 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 (RRC_IDLE) or inactive (RRC_INACTIVE) states 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.

[0087] To receive paging information from the network, the UE can determine the paging cycle (DRX cycle) and the location of the paging occasion (PO) in each paging cycle based on network configuration parameters. The UE then detects the paging PDCCH on the paging PDCCH detection opportunity (MO) of the paging occasion and performs the next action based on the content indicated in the paging PDCCH. If the UE detects the paging PDCCH, it performs paging PDSCH reception or other related actions based on the scheduling information indicated in the DCI transmitted by the detected PDCCH. 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 the network configuration: the paging cycle period parameter T for receiving paging messages, which indicates that T frames (also called radio frames) constitute one paging cycle length; the number N of paging frames (PFs) in one paging cycle; and the number Ns of POs for one PF, etc. A paging frame is a radio frame and can contain one or more POs or the start of a PO. This can be simply referred to as one or more POs associated with or contained by a PF. For simplicity, this PF can be called the PF of a PO, and the PO can also be simply called the PO of a PF or the PO associated with a PF; therefore, the PF used to determine the UE's PO can also be called the UE's PF. A paging opportunity (PO) consists of several paging PDCCH monitoring occasions (PDCCH monitoring occasions for paging, PDCCH MOs, or simply MOs). 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. The user equipment determines a PO in each paging cycle to detect the paging PDCCH. The user equipment (UE) can then select the MOs in the PO (Point of Purchase) to receive the PDCCH based on its own circumstances. For example, the UE may select one or more MOs for paging PDCCH detection based on SSB (Security Service Bus) measurement information. The UE can determine the PO used to detect its own paging information based on these configured paging parameters.

[0088] 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 for which the UE needs 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:

[0089] (SFN+PF_offset)mod T=(T / N)*(UE_ID mod N)

[0090] Where PF_offset is the paging frame offset value configured by the network, T is the paging cycle period determined by the user equipment, N is the number of paging frames in one paging cycle, mod is the modulo operation, and UE_ID is the UE identifier value used to determine 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.

[0091] 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 may be associated with Ns POs. The UE needs to detect one of these POs to check the related PDCCH 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 using the following formula:

[0092] i_s = floor(UE_ID / N) mod Ns

[0093] 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.

[0094] A specific example is shown in Figure 1. In Figure 1, the UE can determine the SFN of the UE's PF based on the aforementioned process and parameters such as the UE ID. Here, Ns = 2. The UE can also determine the sequence number i_s = 1 of the UE's PO in the PF's PO. 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 a schematic diagram of the UE's PO in two paging cycles. The situations in other paging cycles and examples using other paging parameters can be obtained similarly.

[0095] 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.

[0096] User equipment can perform paging PDCCH detection on relevant time-frequency resources using the method described above. The DCI in the paging PDCCH contains information such as whether the user needs to receive a corresponding paging message, or whether there is a specific short message. 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 based on these parameters.

[0097] Several UEs may be detecting the same PO (Point of Purchase). This means that paging information transmitted on the PO via PDCCH and scheduled PDSCH may be used to indicate paging information for a subset of these UEs. Typically, UEs periodically check relevant paging information, even if the paging information does not indicate data transmission related to their own equipment or the paging message is unrelated to their own equipment. Such periodic PDCCH and PDSCH checks consume significant UE power, impacting battery life and reducing user experience.

[0098] 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 (low-power LP-WUS). It may also be referred to simply as WUS in the following text. The LP-WUS signal may contain relevant information needed to wake up the UE, such as the UE ID, an indication bit corresponding to the UE or UE packet, a codeword value related to the UE or UE packet, or a specific sequence of the corresponding UE or UE packet detected by the user in the LP-WUS signal. The UE can determine whether it has been woken up by the LP-WUS signal based on the information in the LP-WUS. The user equipment (UE) only wakes up the master receiver to perform relevant data transmission when it detects a wake-up indication message for itself or its user group. This includes detecting the paging PDCCH on the associated paging opportunity (PO) or transmitting the PRACH within the appropriate window. In this way, the UE can maintain its connection to the network with minimal power consumption and without affecting its response latency performance to network paging.

[0099] In NR networks, base stations can configure one or more sets of LP-WUS resources and other parameters. UEs can determine certain time-frequency resources based on these parameters for LP-WUS signal detection. 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 UE's LP-WUS reception and detection performance. 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 these LMOs, and the LMOs can be called the LMOs of the LO. The UE can determine the LOs to be detected based on the relevant configuration and detect LP-WUS on the LMOs within them. 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.

[0100] 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 OFDM symbols, such as generating LP-WUS signals with OOK using a multi-carrier approach. In this case, an OFDM symbol length can contain an integer number of OOK symbols within the LP-WUS signal bandwidth, such as 1 / 2 / 4 / 8 / 16, making it easy for the base station to transmit signals with different waveforms. Therefore, the length, position, and other parameters of relevant LP-WUS resources, LO, or LMO in the time domain can also be described using OFDM symbols, time slots, frames, and other parameters. Furthermore, the OOK symbols used by the base station to transmit LP-WUS occupy a certain amount of effective bandwidth. And to facilitate UE receiver implementation, some guard bands are reserved outside the effective bandwidth and 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 sideband.

[0101] The base station can also transmit LP-SS (lower power synchronization signal) for UE synchronization and RRM measurements. LP-SS can use similar waveforms and modulation schemes as LP-WUS, allowing for processing using low-power receivers.

[0102] When a base station uses LP-WUS to instruct a UE on related processing, it can use an OOK signal to transmit relevant indication information, such as using the ON and OFF states of the OOK signal to represent "1" and "0". Simultaneously, when the base station transmits the relevant OOK signal, it can also use other methods to transmit information on the resources used by the OOK signal. For example, when transmitting the ON symbol of OOK, a specific sequence can be transmitted on the time-frequency resources used, and the UE can determine different indication information based on different sequences. For simplicity, the information determined by the UE on an LP-WUS based on the ON / OFF state of the OOK symbol can be defined as first information, and the information represented by the sequence transmitted on the ON symbol can be defined as second information. The UE can report its capabilities to the base station, for example, that it can detect the first information according to LP-WUS (referred to as capability 1), or that it can detect both the first and second information simultaneously according to LP-WUS (referred to as capability 2). If this disclosure does not explicitly state whether it is based on the first or second information, the UE can determine the relevant indication in the LP-WUS based on the first and / or second information. Furthermore, the first and second information may transmit partially or entirely the same information.

[0103] If the base station provides LP-WUS related resource configuration and the UE has the capability to perform LP-WUS detection, 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, detecting 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. The term LO monitoring cycle will be used consistently in the following text. 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; the UE can use the determined paging cycle length to determine the LO monitoring cycle length.

[0104] When the UE determines whether it needs to detect the PO in the corresponding paging loop based on the indication in the LP-WUS, it needs to determine the location of the LO. For example, the LO is determined based on a reference point and an offset parameter relative to the reference point, and the offset value used is determined based on several offset parameters configured by the network. The UE also needs to determine parameters such as the beam, repetition, number of LP-WUS, and sequence number used by each LMO in the LO's several LMOs. In addition, this disclosure uses the UE in idle state (RRC_IDLE state) or inactive state (RRC_INACTIVE state) as an example for description. For the sake of simplicity, the description of its state can be omitted, and it can be directly referred to as UE or user equipment. If the same method can be applied to UEs in other states, such as connected state (RRC_CONNECTED state), it can be easily implemented by analogy, and will not be described in detail. The following provides embodiments to describe the implementation of this disclosure in more detail.

[0105] Below, with reference to the accompanying drawings, a summary description of the implementation method for the UE to determine LO and LMO related parameters in this disclosure is provided.

[0106] Figure 2 is a flowchart of a method for determining LO and detecting LP-WUS performed by a user equipment according to an embodiment of the present disclosure.

[0107] As shown in Figure 2, in step 101, the UE receives higher-layer configuration signaling from the network, obtains LP-WUS resources, and configurations such as LO parameters. The UE can determine several LMOs through the LP-WUS resources and determine relevant parameters such as beam, repetition, and the number of LP-WUS in the LO based on the LO parameters.

[0108] In step 103, the UE reports one or more wake-up delay values ​​through a capability report, and reports the priority of the wake-up delay through an implicit or explicit method. This disclosure does not limit the execution order of the operations in steps 101 and 103 above; for example, the order of steps 101 and 103 may be changed depending on the actual execution situation of the UE.

[0109] In step 105, the UE determines the offset value and related LO based on the reported wake-up delay value and higher-layer configuration. The UE can also determine the LMO in the LO and parameters such as the sequence number used by the LMO according to the relevant configuration.

[0110] In step 107, the UE detects LP-WUS on the relevant LMO and determines whether to detect PDCCH on the PO. The UE may determine whether to detect PDCCH on the relevant PO based on the indication of LP-WUS, or the UE may determine whether to detect PDCCH on the PO based on the state of the UE's LP-WUS detection, such as the timer running state.

[0111] The implementation of each step in this disclosure will be described in more detail below in specific embodiments.

[0112] When configuring LP-WUS resource parameters, the base station can do so via system information broadcast (e.g., through SIB), which typically includes configuration information for all LOs / LMOs in the cell. For a given UE, it is not necessary to detect all LOs. The UE can determine which LOs' LMOs are used to transmit the LP-WUS indicated for the UE using certain methods. For example, the UE determines a reference point in a paging cycle, and can determine an associated LO based on the offset from that reference point. The LP-WUS on that LO indicates whether the UE needs to detect the PO in that paging cycle. Thus, due to the periodicity of paging cycles, the UE can detect LP-WUS on several LOs to determine whether to detect the associated PO. In this embodiment, the relevant methods and processes are described using the PO and associated LO of one paging cycle, but can be easily extended to POs and associated LOs in other paging cycles, and will not be described in detail below.

[0113] When a UE detects LP-WUS on the LO using LR, a certain wake-up delay is required for the transition of its working state between waking up MR and starting to detect PDCCH. Depending on different UE capabilities and different sleep states, there may be various wake-up delay requirements. The UE can report several wake-up delay values ​​in its capability report, corresponding to different state and capability requirements. For example, reporting the first wake-up delay corresponds to a very deep sleep state, the second wake-up delay corresponds to a deep sleep state, and so on.

[0114] The UE can determine a reference point based on a reference PF or reference PO on the paging cycle, and determine the (start) position of the associated LO based on an offset parameter relative to that point. Optionally, the reference point determined based on the reference PO or reference PF is determined according to at least one of the following:

[0115] -PO's first time slot

[0116] -PO's first time slot of PF

[0117] The first time slot of the kth PO in the PF where the PO is located

[0118] The reference PF is the PF determined by the UE during the paging cycle, and the PO is the PO determined by the UE during the paging cycle. The k-th PO is the first PO among multiple POs sharing a LO / LP-WUS when the system is configured with the PF. For example, the value of k can be obtained by k = floor(i_s / P)*P. i_s is the PO's sequence number in the PF, and P is the number of POs sharing a LO. floor is the floor function.

[0119] When configuring the offset parameters between the associated LO and the reference point, the base station may configure a large offset value to correspond to the wake-up latency requirements of all UEs, or it may configure multiple offset values ​​to meet the latency requirements of different UEs. For example, one offset value may be used for UEs with lower latency, and another offset value may be used for UEs with higher latency.

[0120] Furthermore, multiple Points of Interest (POs) may use the same reference point, and these POs may not share a single Loop / LP-WUS. For example, different POs within a Power Grid (PF) may use the same reference point, such as the first time slot of the PF. The base station may use different offsets for these different POs to correspond to different Loops. This situation can be described using offset parameter groups as an example, where the offsets of different POs use offset parameters from different offset parameter groups. An offset parameter group contains several offset parameters used to determine the multiple Loops associated with a PO. UEs using different offset parameter groups can obtain the relevant offset values ​​based on the parameters in their respective offset parameter groups.

[0121] A specific example is shown in Figure 3. In the figure, PO0 and PO1 use the same reference point and do not share LO / LP-WUS. In this case, the base station can configure different offset parameter groups for these two POs. For example, as shown in Figure 3(a), O0 and O2 are the offset values ​​obtained by the UE associated with PO0 based on the two offset parameters in the first offset parameter group. O1 and O3 are the offset values ​​obtained by the UE associated with PO1 based on the two offset parameters in the first offset parameter group. When configuring the offset parameters, the network may also use the method shown in Figure 3(b), using the common offset parameter O0 of PO0 and PO1 to configure a larger offset to determine the common reference point r0, and using the common offset parameter O1 of PO0 and PO1 to configure a smaller offset to determine the common reference point r1. Then, the starting positions of the actual LO0 / LO1 / LO2 / LO3 are obtained using the offset parameters O01 / O02 / O11 / O12.

[0122] These two methods can achieve mutual conversion of parameters through simple calculations. For example, O0 in Figure 3(a) can be obtained by subtracting O0 from O01 in Figure 3(b). In this disclosure, the two methods can be considered equivalent, and one of them can be used to illustrate relevant examples.

[0123] When a base station configures multiple offset parameters in an offset parameter group, the different offset values ​​of these offset parameters can have certain relationships, which can benefit the entire communication system, such as reducing the overhead of LP-WUS consuming system resources and reducing the overhead of signaling indication. Unless otherwise specified, this disclosure uses multiple offset parameters in an offset parameter group and their corresponding offset values ​​as examples.

[0124] In an optional example, the difference between multiple offset values ​​is an integer multiple of a unit length (denoted as U), which can optionally be one of the following:

[0125] -T / N corresponds to the length, which is the interval length between adjacent paging frames;

[0126] - The length of the (default) DRX paging loop configured in the SIB;

[0127] - The length of the eDRX paging loop configured in the SIB, when the length of the eDRX is not greater than 1024.

[0128] Where T is the paging cycle length used by the UE, and N is the number of paging frames in one paging cycle. Typically, N can be configured as one of {T, T / 2, T / 4, T / 8, T / 16}, so the value of T / N is one of {1, 2, 4, 8, 16}, in frames. The paging cycle length can typically be one of {32, 64, 128, 256}, in frames. Depending on the SCS value, a frame length can be equivalent to several time slots, symbols, or milliseconds. For example, when the SCS is 15kHz, one frame is equivalent to 10 time slots or 10ms.

[0129] This parameter configuration allows LOs corresponding to different offset values ​​to be associated with other POs simultaneously, thereby reducing the total number of LOs that need to be configured in the system and reducing system overhead.

[0130] In a specific example, the offset parameter configured by the base station is an offset value. For example, two offset values, offset_0 and offset_1, are configured. The difference between offset_1 and offset_0 must be an integer multiple of the unit length. The base station can also configure more offset values, offset_x, where the difference between offset_x and offset_0 is also an integer multiple of the unit length. For example, the base station configures offset_0 as 28 slots and offset_1 as 348 slots. The unit length T / N is 16 radio frames, and the SCS is 15kHz. In this case, one radio frame contains 10 slots, so the unit length is equivalent to 160 slots. In this case, the difference between offset_1 and offset_0 is 320 slots, which is an integer multiple of the unit length.

[0131] In another example, the base station is configured with an offset parameter offset_0. The UE can obtain an offset value offset_0. If the base station is also configured with a parameter O containing several offset parameters, the UE can determine the corresponding offset value offset_x = offset_0 + O_x * U * A based on the unit length, offset_0, and O. O_x is the x-th offset parameter of O containing multiple offset parameters configured by the base station, and U is the unit length determined by the UE. Here, it is assumed that the unit of U is a frame, so a constant A is used for conversion when calculating the unit of the offset value in the number of slots. A is a constant related to SCS, for example, when SCS is 15kHz and μ = 0, it represents the number of slots in a frame. When SCS is 30kHz If the units of U and the offset value are the same (e.g., both are frames), then A = 1.

[0132] For example, the base station is configured with offset_0 as 28 slots, and also configured O to include two parameter values, 2 and 5. For instance, when the unit length is T / N = 16 radio frames and the SCS is 15kHz, one radio frame contains 10 slots, which is equivalent to 160 slots per unit length. The UE can determine that the offset values ​​corresponding to each parameter value in offset parameter O are offset_1 as 28 + 2 * 160 = 348 slots and offset_2 as 28 + 5 * 160 = 828 slots.

[0133] The UE can obtain the (starting) position of the LO based on the reference point and offset parameters. For example, the UE can obtain the LO's slot number (or frame number) by determining the slot number (or frame number) of the reference point and the offset parameters. For example, according to n_LO_x = n_refPO - offset_0 - O_x * U * A, where n_LO_x is the LO's slot number, n_refPO is the reference point's slot number, and O_x is the x-th offset parameter of O configured by the base station, which contains multiple offset parameters; for offset_0, O_x = 0. U is the unit length determined by the UE, which is assumed to be in frames, so a constant A is used for conversion when calculating the number of slots. A is a constant related to SCS, for example, the number of slots in a frame when SCS is 15kHz and μt = 0. When SCS is 30kHz If the units of U and the offset value are the same (e.g., both are frames), then A = 1.

[0134] In another example, the base station is configured with parameter O containing several offset parameters. The UE can determine the corresponding offset value offset_x = O_x * U * A based on the unit length and O. O_x is the x-th offset parameter of O configured by the base station, and U is the unit length determined by the UE. Here, it is assumed that the unit of U is a frame, so a constant A is used for conversion when calculating the number of time slots. A is a constant related to SCS, for example, when SCS is 15kHz and μ = 0, it represents the number of slots in a frame. When SCS is 30kHz If the units of U and the offset value are the same (e.g., both are frames), then A = 1.

[0135] For example, base station configuration O includes two parameter values, 3 and 5. For instance, when the unit length T / N is 16 radio frames and the SCS is 15kHz, one radio frame contains 10 slots, which is equivalent to 160 slots per unit length. The UE can determine that the offset values ​​corresponding to each parameter value in offset parameter O are offset_0 as 3 * 160 = 28 slots and offset_1 as 5 * 160 = 800 slots.

[0136] The UE can obtain the (starting) position of the LO based on the reference point and offset parameters. For example, the UE can obtain the LO's slot number (or frame number) by determining the slot number (or frame number) of the reference point and the offset parameters. For example, according to n_LO_x = n_refPO - O_x * U * A, where n_LO_x is the LO's slot number, n_refPO is the reference point's slot number, O_x is the x-th offset parameter among multiple offset parameters configured by the base station, and U is the unit length determined by the UE. Here, it is assumed that the unit of U is a frame, so a constant A is used for conversion when calculating the number of slots. A is a constant related to SCS, for example, when SCS is 15kHz and μ = 0, it represents the number of slots in a frame. When SCS is 30kHz If the units of U and the offset value are the same (e.g., both are frames), then A = 1.

[0137] The relevant description here uses Figure 3(a) as an example to illustrate the offset value relationship. When using the configuration method of the example in Figure 3(b), if each LO uses the same parameters or configuration values ​​based on the common reference points r0 and r1, that is, O01 = O02, O11 = O12, the relationship between multiple offset values, such as the relationship between O0 and O2 in Figure 3(a), can be compared to the relationship between some offset values ​​in Figure 3(b), that is, the relationship between O0 and O1 in Figure 3(b). The explanation of applying the above method when using such a configuration will not be repeated here.

[0138] From the time a UE detects LP-WUS using LR to the time it wakes up MR and begins detecting PDCCH, a certain wake-up delay is required for the transition of its working state. Depending on the different capabilities of the UE and the different sleep states it is in, there may be multiple wake-up delays. The UE can report several wake-up delay values ​​in its capability report, corresponding to different states and capability requirements. For example, the first wake-up delay corresponds to the ultra-deep sleep state, the second wake-up delay corresponds to the deep sleep state, and so on.

[0139] In another aspect of the embodiments of this disclosure, when the UE reports a wake-up delay in its capability report, it also includes the priority corresponding to the wake-up delay. In one example, the UE arranges multiple delay values ​​in the capability report in descending order of priority. In this case, the priority corresponding to each wake-up delay can be obtained based on the order of the multiple wake-up delays in the report. When the UE reports only one wake-up delay, a default priority, such as the highest priority, can be applied. In another example, the UE reports the corresponding priority number when reporting a wake-up delay, which also determines the priority of each wake-up delay. Optionally, when the UE reports only one wake-up delay, the corresponding priority number can be omitted to reduce signaling overhead. In this case, a default priority, such as the highest priority, can be applied. Thus, the base station can obtain one or more wake-up delays supported by the UE, and the priority corresponding to each wake-up delay, based on the UE's report.

[0140] When a base station configures multiple offset values ​​in an offset parameter group, the UE can determine the LO and the distance (gap) from the LO to the associated PO based on these offset values. A specific example is shown in Figure 4. In Figure 4, the UE can determine LO0 and LO2 for PO0 on the paging cycle based on two offset values ​​O0 and O2, respectively. The UE can also determine the distances G0 and G1 between the end of the last LMO that the UE wants to detect in the LO and the beginning of the PO, respectively.

[0141] In another aspect of this embodiment, when the base station is configured with multiple offset values, the UE can select an offset value and the associated LO based on several reported wake-up delays, their respective priorities, and the distance from LO to PO determined by the offset value. For example, the UE compares the LO-PO distances obtained from the offset value in ascending order of priority from high to low. The UE selects the first offset value whose distance is not less than the wake-up delay as the selected offset value and determines the LO associated with that offset value as the LO detected by the UE. In a specific example, the wake-up delays reported by the UE are sorted by priority from high to low as {800ms, 200ms, 400ms}. The offsets determined by the UE are {500slot, 300slot}, and the LO-PO distances determined by the UE based on the offsets are {480slot, 280slot}. When the SCS is 15kHz, the length of one slot is 1ms. First, the UE compares the highest priority 800ms wake-up delay with the 280slot and 480slot distances respectively, neither of which meets the requirements. Then, the UE's second priority 200ms wake-up delay is compared with 280slot and 480slot. Since 200ms is less than 280slot, the UE selects the offset value of 300slot corresponding to the distance value of 280slot to determine the corresponding LO.

[0142] Optionally, if the UE does not determine an offset value after comparison, the UE may use one of the following methods:

[0143] - Use the largest offset value to determine the associated LO as the LO detected by the UE. If the UE detects an LP-WUS on the LO that instructs the UE to perform PDCCH detection, the UE will detect PDCCH on the first PO after the LO whose distance from the LO meets the highest priority wake-up delay value.

[0144] - The UE does not use LP-WUS to determine whether to detect the PO, meaning the UE does not perform LO detection. The UE can directly detect the PO or detect the PO according to the PEI instruction.

[0145] Optionally, the UE may use one of the two methods described above, as instructed by the base station.

[0146] Depending on the deployment scenario, the base station can configure several LMOs for each of the S beams to cover UEs with different spatial transmission characteristics in the cell. Here, the beam index y can be used to identify the LMOs of different beams, y = 0, ..., S-1. The LMOs corresponding to each beam can be divided into M groups, with R LMOs in each group. The R LMOs can be repeatedly transmitted (simple repetition or transmission of different coded redundancy versions) for UE merging and reception to improve reception performance. The repetition index z can be used to identify LMOs with different repetition orders, z = 0, ..., R-1. The M groups of LMOs can be used to transmit M different LP-WUSs. The UE can detect these M LP-WUS LMOs to determine if there is an indication that the UE should detect the PDCCH on the relevant PO. Therefore, this can also be referred to as the number of LP-WUSs M detected by the UE in the LO (or simply the number of LP-WUSs M). Here, x can be used to identify the index of these LP-WUSs, x = 0, ..., M-1. If the network also supports multiple LMO packets for transmitting LP-WUS indicating different UE packets, the UE can also determine the number G of LMO groups and use the packet sequence number g to identify the LMO of different packets, g = 0, ..., G-1.

[0147] After determining the LO (Location of Requirement) to be detected, the UE also needs to determine several LMOs (Local Level Machines) within the LO. Furthermore, when performing LP-WUS detection on the LMOs within the LO, it is necessary to determine the parameters corresponding to each LMO in the LO. Only in this way can the UE correctly determine which LMOs it needs to detect, whether combined reception can be used to enhance reception performance, and understand the meaning of the transmitted codepoint values ​​corresponding to the information indicated by the LP-WUS detected on the LMOs.

[0148] In one aspect of the embodiments of this disclosure, the UE can determine, according to network configuration, the number of beams S used by LMO in LO (that is, the number of beams used by LP-WUS), the number of LP-WUS detected by the UE in LO M, the number of repetitions R, the number of LMO groups G, etc. The UE also determines, according to relevant configuration, the beam number, repetition number, LP-WUS number, group number, etc., used by each LMO.

[0149] Optionally, the UE determines the number of beams S used by LP-WUS according to at least one of the following methods:

[0150] The LP-WUS uses the same number of beams as the LP-SS.

[0151] - The actual number of SSBs transmitted in the cell, for example, is determined according to the configuration parameter ssb-PositionsInBurst in the SIB. LP-WUS uses the same number of beams as the actual number of SSBs transmitted.

[0152] The relevant LP-WUS beam number is the actual transmitted SSB or LP-SS number numbered from 0 to S-1. The beam number y is the corresponding LMO related to the (y+1)th actual transmitted SSB or LP-SS.

[0153] Optionally, the UE determines the number of repetitions R according to at least one of the following methods:

[0154] - The R configured in the SIB signaling, for example, the value indicated by nrofLP-WUS_MOperLP-WUSperSSB-InLO.

[0155] - When the network is not configured with the R parameter, use 1 as the default value.

[0156] Optionally, the UE determines the LP-WUS quantity M according to at least one of the following methods:

[0157] - The value of M configured in the SIB signaling, for example, indicated by nrofLP-WUS_MOperLP-WUSperSSB-InLO.

[0158] - When the network is not configured with the M parameter, use 1 as the default value.

[0159] Optionally, the UE determines the number of LMO groups G according to at least one of the following methods:

[0160] - The value of G configured in SIB signaling, for example, is indicated by nrofLP-WUSGroupNumber-InLO.

[0161] - When the network is not configured with the G parameter, use 1 as the default value.

[0162] In one alternative embodiment, the UE determines each LMO in the LO and the parameters of the LMO based on relevant parameters and a default order.

[0163] In a specific example, when the network does not support multiple LMO packets, LMO repetition is not supported, and a LO is a set of S*M consecutive LMOs. The UE determines that the LMO with sequence number [x*S+y] uses beam number y and LP-WUS number x. The LMO is an LMO that does not overlap with uplink symbols (e.g., indicated as an uplink symbol according to the system configuration uplink / downlink symbol parameter tdd-UL-DL-ConfigurationCommon; if the BWP or cell where the LO is located does not have this parameter configured, it can be assumed that the symbols of the LMO do not overlap with uplink symbols. Other examples are the same and will not be described individually). Starting from the (starting) position of the LO, the LMOs are ordered from 0, x = 0, 1, ..., M-1, y = 0, 1, ..., S-1. In this example, when searching for LP-WUS, the UE can prioritize searching each beam to obtain better coverage.

[0164] In a specific example, when the network does not support multiple LMO packets, LMO repetition is not supported. A LO is a set of S*M consecutive LMOs. The UE determines the LMO with sequence number [y*M+x] using beam number y and LP-WUS number x. Here, the LMO is an LMO that does not overlap with the uplink symbol, and is ordered from 0 starting from the (start) position of the LO, x = 0, 1, ..., M-1, y = 0, 1, ..., S-1. In this example, the UE can prioritize searching for LP-WUS, resulting in a faster search speed.

[0165] In a specific example, when the network does not support multiple LMO packets, a LO is a set of S*M*R consecutive LMOs. The UE determines the LMO with sequence number [z*M*S+y*M+x] using beam number y, LP-WUS number x, and repetition number z. The LMOs are those that do not overlap with uplink symbols, and are ordered from 0 starting from the (starting) position of the LO: x = 0, 1, ..., M-1, y = 0, 1, ..., S-1, z = 0, ..., R-1. In this example, the UE can prioritize searching each LP-WUS when searching, resulting in a faster search speed.

[0166] In a specific example, when the network does not support multiple LMO packets, a LO is a set of S*M*R consecutive LMOs. The UE determines the LMO with sequence number [y*M*R+x*R+z] using beam number y, LP-WUS number x, and repetition number z. The LMOs are those that do not overlap with uplink symbols, and are ordered from 0 starting from the beginning of the LO: x = 0, 1, ..., M-1, y = 0, 1, ..., S-1, z = 0, ..., R-1. In this example, the UE can prioritize searching for each repeating LP-WUS when searching for LP-WUS, resulting in a faster search speed.

[0167] In a specific example, when the network does not support multiple LMO packets, a LO is a set of S*M*R consecutive LMOs. The UE determines the LMO with sequence number [z*M*S+x*S+y] using beam number y, LP-WUS number x, and repetition number z. The LMOs are those that do not overlap with uplink symbols, and are ordered from 0 starting from the (start) position of the LO: x = 0, 1, ..., M-1, y = 0, 1, ..., S-1, z = 0, ..., R-1. In this example, the UE can prioritize searching for LP-WUS of each beam when searching for LP-WUS, resulting in a faster search speed.

[0168] In a specific example, when the network does not support multiple LMO packets, a single LO is a set of S*M*R consecutive LMOs. The UE determines the LMO with sequence number [x*R*S+y*R+z] using beam number y, LP-WUS number x, and repetition number z. The LMOs are those that do not overlap with uplink symbols, and are ordered from 0 starting from the (start) position of the LO: x = 0, 1, ..., M-1, y = 0, 1, ..., S-1, z = 0, ..., R-1. In this example, the UE can prioritize searching for LP-WUS of each beam when searching for LP-WUS, resulting in better reception performance.

[0169] In a specific example, when the network does not support multiple LMO packets, a single LO is a set of S*M*R consecutive LMOs. The UE determines the LMO with sequence number [x*R*S+z*S+y] using beam number y, LP-WUS number x, and repetition number z. The LMOs are those that do not overlap with uplink symbols, and are ordered from 0 starting from the (start) position of the LO: x = 0, 1, ..., M-1; y = 0, 1, ..., S-1; z = 0, ..., R-1. In this example, the UE can prioritize searching for LP-WUS of each beam when searching for LP-WUS, resulting in better reception performance.

[0170] In a specific example, when the network does not support multiple LMO packets, a LO is a set of S*M*R consecutive LMOs. The UE determines the LMO with sequence number [y*M*R+z*M+x] using beam number y, LP-WUS number x, and repetition number z. The LMOs are those that do not overlap with uplink symbols, and are ordered from 0 starting from the (starting) position of the LO: x = 0, 1, ..., M-1, y = 0, 1, ..., S-1, z = 0, ..., R-1. In this example, the UE can prioritize searching for repeated LP-WUSs when searching for them, resulting in a faster search speed.

[0171] In one aspect of an optional embodiment, when the base station also indicates a start symbol parameter, the UE determines the LMO parameters based on the start symbol parameter indicated by the base station. The start symbol indicates the starting position of a number of symbols or time slots preceding the (start) position of the LO. In a specific example, the base station configures M symbols or time slots using the parameter firstSymbolofLP-WUS. The UE can determine R*S LMOs starting from the starting position of the (x+1)th firstSymbolofLP-WUS, where the LP-WUS index of these LMOs is x. Here, the LMOs are ordered from 0 starting from the position determined by the start symbol and do not overlap with uplink symbols. Optionally, [y*R+z] LMOs use beam index y and repetition index z. Optionally, [z*S+y] LMOs use beam index z and repetition index z. The UE can determine all M*R*S LMOs based on the M values ​​in firstSymbolofLP-WUS using this method.

[0172] In a specific example, the base station uses the parameter `firstSymbolofBeam` to configure the number of symbols for S LMOs relative to the LO (start) position. The UE can determine R*M LMOs starting from the start position of the symbol or time slot indicated by the (y+1)th `firstSymbolofBeam`, where the beam number of these LMOs is y. The LMOs are ordered starting from 0 and do not overlap with uplink symbols. Optionally, [x*R+z] LMOs use LP-WUS index x and repetition index z. Optionally, [z*M+x] LMOs use LP-WUS index x and repetition index z. The UE can determine all M*R*S LMOs based on the S values ​​in `firstSymbolofBeam` using this method.

[0173] In a specific example, the base station uses the parameter `firstSymbolofRepetition` to configure the number of R LMO symbols relative to the LO (start) position. The UE can determine S*M LMOs starting from the symbol position indicated by the (z+1)th `firstSymbolofRepetition`, where the repetition index of these LMOs is z. The LMOs are ordered starting from 0 and do not overlap with uplink symbols. Optionally, [x*S+y] LMOs use LP-WUS index x and beam index y. Optionally, [y*M+x] LMOs use LP-WUS index x and beam index y. The UE can determine all M*R*S LMOs based on the R values ​​in `firstSymbolofRepetition` using this method.

[0174] In one alternative embodiment, when configuring relevant parameters, the base station may also indicate information for the UE to determine the sequence number corresponding to each parameter in a certain way.

[0175] In optional examples, the base station configures the priority of the corresponding sequence number for relevant parameters, and the UE can determine the sequence number in LMO based on the priority. For example, when the number M of LP-WUS configured by the base station is greater than 1, the LP-WUS sequence number priority P_M can also be configured; when the number of beams used by LMO is greater than 1, the beam sequence number priority P_S can be configured; when the number of repetitions R is greater than 1, the priority of the repetition sequence number can be configured as P_R. By default, if the UE determines that a certain parameter has no configured priority, it can use the default priority, such as the lowest priority. The UE determines that the LMO with sequence number [P3_x*P2_N*P1_N+P2_x*P1_N+P1_x] uses P1_x, P2_x, and P3_x as the sequence numbers of the parameters corresponding to priorities P1, P2, and P3. The LMO (Local Mode Modulation) is an LMO that does not overlap with the uplink symbol. Starting from the beginning of the LO (Local Message) position, it is ordered from 0: P1_x = 0, ..., P1_N-1; P2_x = 0, ..., P2_N-1; P3_x = 0, ..., P3_N-1. P1_N, P2_N, and P2_N represent the number of parameters corresponding to priorities P1, P2, and P3, respectively. For a specific example, assume the UE determines the beam number as the first priority: P1_N = S, P1_x = y. The repeating sequence number is the second priority: P2_N = R, P2_x = z. The LP-WUS sequence number is the third priority: P3_N = M, P2_x = x. The UE determines that the LMO with sequence number [x*R*S+z*S+y] uses beam number y, LP-WUS number x, and repeating sequence number z. Where LMO is an LMO that does not overlap with the previous line symbol, starting from the beginning position of LO and sorted from 0, x = 0, 1, ..., M-1, y = 0, 1, ..., S-1, z = 0, ..., R-1.

[0176] In another optional example, the base station can directly indicate the sorting order of parameter numbers, for example, by indicating that the sorting order of each parameter number is one of the set {RMS, SRM, RSM, SMR, MRS, MSR, ...} through enumeration values. Here, R represents the repeating parameter, M represents the LP-WUS parameter, and S represents the beam parameter. For example, when the base station indicates that SRM is used to determine the parameter number sorting, the UE determines that the LMO with the sequence number [x*R*S+z*S+y] uses beam number y, LP-WUS number x, and repeating number z. Here, the LMO is an LMO that does not overlap with the uplink symbol, starting from the beginning position of the LO and sorted from 0, x = 0, 1, ..., M-1, y = 0, 1, ..., S-1, z = 0, ..., R-1. When using other indication values, the same principle applies, and will not be detailed further.

[0177] In optional examples, the method of configuring the priority of the sequence number corresponding to the base station's relevant parameters can be combined with other methods. For example, when the base station also indicates the start symbol parameter, the UE determines the LMO parameters based on the start symbol parameter indicated by the base station. In a specific example, the base station configures M symbols or time slots using the parameter firstSymbolofLP-WUS. The UE can determine R*S LMOs starting from the (x+1)th symbol or time slot position indicated by firstSymbolofLP-WUS, with these LMOs having an LP-WUS sequence number of x. Here, LMOs are ordered starting from 0 from the position determined by the start symbol and do not overlap with uplink symbols. The UE can determine the beam sequence number based on the parameter priority or the order of the parameter sequence numbers indicated by the base station. For example, when the indicated repetition sequence number is first priority and the beam sequence number is second priority, or the indicated order is "SR", then [y*R+z] LMOs use a beam sequence number of y and a repetition sequence number of z. The UE can determine all M*R*S LMOs based on the M values ​​in firstSymbolofLP-WUS using this method. When the base station configures firstSymbolofBeam or firstSymbolofRepetition, the parameters of the relevant LMOs can be obtained by analogy using this method.

[0178] In one optional embodiment, the UE can also determine the parameters of each LMO based on the QCL parameters of the LMO. When configuring LP-WUS resources, the base station can configure relevant QCL parameters for each resource, which indicate the beam information used by the LMO determined by the LP-WUS resource, such as satisfying the QCL relationship with the beam of a certain SSB. In this case, the UE can directly determine the beam number used by each LMO based on the resource configuration corresponding to the LMO. For example, if the base station configures S LP-WUS resources with beam numbers 0, ..., S-1, the UE can determine M*R consecutive LMOs among the LMOs configured for each beam number y. The LMOs are those using beam number y that do not overlap with the uplink symbol, and are ordered starting from 0 from the beginning of the LO.

[0179] Optionally, the UE determines the repetition and LP-WUS sequence numbers according to a default order. For example, [x*R+z] LMOs use LP-WUS sequence number x and repetition sequence number z; or [z*M+x] LMOs use LP-WUS sequence number x and repetition sequence number z. The UE can use this method to determine all M*R*S LMOs for S beams.

[0180] Optionally, the UE can determine the beam number based on the parameter priority or parameter sequence order indicated by the base station. For example, when the indicated repetition number is the first priority and the beam number is the second priority, or the indicated sequence is RM, then the [x*R+z] LMOs use LP-WUS number x and repetition number z. The UE can determine all M*R*S LMOs for S beams using this method.

[0181] In an optional example, when the network also supports multiple LMO packets, a LO is a set of G*S*M*R consecutive LMOs. The UE determines that the LMO with sequence number [g*R*M*S+index_in_G] uses beam number y, LP-WUS number x, repetition number z, and LMO group number g. Here, the LMOs are those that do not overlap with uplink symbols, and are ordered from 0 starting from the beginning position of the LO: x = 0, 1, ..., M-1, y = 0, 1, ..., S-1, z = 0, ..., R-1. Here, index_in_G can be any of the LMO order in the aforementioned example of packets not using multiple LMOs, for example, determined by the default order, the priority indicated by the base station, or the QCL configuration of the LMOs, such as index_in_G = [x*R*S+z*S+y]. Specific steps are not described in detail. It is also possible to instruct on the sorting of GSMR-related parameters, which can be obtained by analogy to the method of determining the SMR sequence number in examples that do not support LMO grouping.

[0182] In an optional example, when the network also supports multiple LMO packets, an LO is a set of G*S*M*R consecutive LMOs. The base station configures a start symbol value `firstSymbolofLMOGroup` for each LMO packet, configuring G symbols or time slots. The UE can determine M*R*S LMOs starting from the symbol or time slot position indicated by the (g+1)th `firstSymbolofLMOGroup`, where the LMO group number is `g`. Here, LMOs are ordered from 0 starting from the position determined by the start symbol and do not overlap with uplink symbols. The UE can determine the parameters corresponding to each LMO in each LMO packet according to any of the LMO ordering methods in the aforementioned example of not using multiple LMO packets, such as the default order, the priority indicated by the base station, or the QCL configuration of the LMOs.

[0183] The methods described above for determining LMO and LMO parameters in LO can be combined with each other, which can be easily obtained by analogy, and will not be described one by one here.

[0184] In another aspect of the embodiments of this disclosure, after the UE determines several LMOs in a LO, it also needs to perform related actions based on the LP-WUS detected on these LMOs. The UE can determine the LMOs in several LOs according to the LO configuration. When the network supports the configuration of multiple LMO groups, the UE typically only needs to detect the LMOs in the UE-related LMO group; the UE can detect all or some of the LMOs. By default, the UE should detect each LMO in the LO (in the UE-related LMO group, if LMO groups are supported) until at least one of the following conditions is met:

[0185] - The UE detects an LP-WUS, and this LP-WUS instructs the UE to detect the PDCCH at the PO.

[0186] - The UE detects that the LP-WUS exit conditions are met, such as the exit timer expiring.

[0187] - The UE detects the Mth LP-WUS on any LMO (if the LMO group is supported) within the UE-related LMO group.

[0188] When a base station wakes up a UE via LP-WUS to detect the PDCCH on a relevant PO, it can map different UE packets or combinations of UE packets to different encoded values. According to relevant methods, the UE can determine its associated PO based on paging parameters, UE_ID, and other parameters. UEs associated with the same PO can be further divided into several UE packets. This allows LP-WUS to wake up some UEs within a UE packet to detect the PDCCH on that PO, avoiding waking up other UEs and thus saving UE power consumption. UE packet information can be obtained in several ways: configured by higher layers (e.g., the NAS layer of the core network) through relevant signaling; when the UE does not have a packet sequence number configured by higher layers, it can be obtained using a default method based on the UE's identifier, for example, according to the formula subgroupID = (UE_ID_A / (N*Ns))%Nsubgroup_ueid + (Nsubgroup - Nsubgroup_ueid). Where UE_ID_A is the UE identifier value, which can be obtained based on the UE's identification code 5G-S-TMSI, N is the number of paging frames on the paging cycle, Ns is the number of POs in a PF, and Nsubgroup and Nsubgroup_ueid are the number of UE packets on the PO and the number of UE packets whose sequence numbers are generated using the UE identifier value.

[0189] When the base station is configuring the LO, if the number M of LP-WUS detected in the LO determined by the UE is greater than 1, the UE usually needs to detect all LMOs (in the LMO group) until it receives all LP-WUS or receives an LP-WUS that instructs the UE to detect the relevant PO.

[0190] Optionally, the UE can also determine, based on instructions from higher layers, whether it needs to detect certain LMOs (within the LMO group), and then stop detection. For example, when the base station transmits LP-WUS, it always places the LP-WUS of some UEs (if any) on LMOs with lower LP-WUS sequence numbers, so that these UEs do not need to search all LMOs, thereby further reducing the power consumption of these UEs. Optionally, the UE determines whether to detect LMOs with certain LP-WUS sequence numbers based on instructions from the network, according to one of the following:

[0191] -UE capability level. For example, the base station indicates the LMO detection part of the UE with a capability level of u or lower via signaling.

[0192] - UE using high-level configured group sequence numbers

[0193] - UEs using packet sequence numbers configured by higher layers, and higher layers instructing the UE's LP-WUS to transmit preferentially.

[0194] - The base station instructs the UE to prioritize LP-WUS transmission via RRC signaling.

[0195] When determining which LP-WUS sequence numbers (within the LMO group) the UE needs to detect, it can do so either according to the base station's instructions or by default. For example, if the base station configures the priority number of LP-WUS to be Q, where Q is a value from 1 to M, and M is the number of LP-WUS detected by the UE in the LO, then these UEs only need to detect the LMO of the first Q LP-WUS sequence numbers. If the base station does not configure Q, the UE uses Q as M.

[0196] For UEs that determine the LMO of the detection part LP-WUS sequence number, the distance from LO to PO is determined from the end of the last LMO using the Qth LP-WUS sequence number to the beginning of the relevant PO.

[0197] If a UE supports LP-WUS detection in idle or inactive states, it can determine when to begin LP-WUS detection based on certain conditions. When the UE begins LP-WUS detection, the MR (Mobile Detector) can be turned off to reduce power consumption. When the LP-WUS detected by the UE instructs the UE to perform PDCCH detection on the relevant PO (Position Point), the UE can wake up the MR to perform PDCCH detection. The base station can also determine whether the UE is performing LP-WUS detection based on the UE's measurement reports, etc. When data arrives at the UE, if the base station determines that the UE is not performing LP-WUS detection, the base station can send a paging PDCCH on the nearest UE-related PO; if the base station determines that the UE is performing LP-WUS detection, the base station can send an LP-WUS signal, instructing the UE to perform paging PDCCH detection on the associated PO. The base station and UE's determination of whether the UE is performing LP-WUS detection may be asynchronous, causing the paging PDCCH sent by the base station to not be detected by the UE in a timely manner, thus increasing additional latency and affecting system efficiency.

[0198] In another aspect of the embodiments of this disclosure, when the UE begins LP-WUS detection, it also determines whether to detect the PDCCH on the associated PO based on the time-domain position of the PO. Optionally, when the UE begins LP-WUS detection, it starts a timer T, and the UE always detects the PO on the paging cycle before T expires. If the UE also supports the use of Paging Early Indication (PEI) and PEI is configured in the network, the UE can determine whether to detect the PO on the paging cycle based on the indication of PEI before T expires. After T expires, the UE can stop detecting the PO until the UE detects an LP-WUS instruction to perform PDCCH detection on the associated PO. Optionally, the timing value of timer T can be obtained according to the configuration timing value of the base station. Optionally, the timing value of timer T can be obtained by the UE according to a default method, for example, equal to the UE's measurement reporting period.

[0199] Optionally, when the UE begins LP-WUS detection, it can obtain the location of the first PO associated with a LO using relevant methods. The UE always detects POs preceding this one. If the UE also supports Paging Early Indication (PEI) and PEI-related parameters are configured in the network, the UE can determine whether to detect POs on the paging cycle based on the PEI indication. The UE can stop PO detection at the beginning of this PO until it detects an LP-WUS indication that the UE should perform PDCCH detection on the associated PO.

[0200] The following description uses FIG5 to illustrate a user equipment that can perform the methods described in detail above in this disclosure as an embodiment.

[0201] Figure 5 is a block diagram illustrating the user equipment (UE) involved in this disclosure.

[0202] As shown in Figure 5, the user equipment UE 500 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.

[0203] 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. The methods of this disclosure are not limited to the steps and sequence 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 limiting, and this disclosure is not limited to the specific information elements that are examples of 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, 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 from smallest to largest to correspond to bits from MSB to LSB; without contradiction, they may also be arranged from largest to smallest to correspond to bits from MSB to LSB. For example, unless otherwise specified, the sequence numbers in the examples of this disclosure are counted incrementally starting from 0. Serial number 0 can correspond to the first element of the sequence, serial number 0 can correspond to the second element of the sequence, and so on. These changes do not affect the UE's determination of the relevant process according to the relevant instructions.

[0204] 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.

[0205] 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.

[0206] 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.

[0207] 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.

[0208] 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: The UE reports the wake-up delay and its priority; The UE determines multiple offset values ​​from multiple offset parameters configured by the system, determines the distance from the low-power wake-up signal LP-WUS opportunity LO to the paging opportunity PO based on the reference point on the determined paging cycle and the multiple offset values, and determines an offset value and the LO associated with the offset value from the multiple offset values ​​based on the distance, the wake-up delay and its priority. The UE determines the LP-WUS detection opportunity (LMO) of the determined LO, and at least one of the beam number, repetition number, and LP-WUS number used by the LMO; The UE detects LP-WUS on the determined LMO.

2. The method according to claim 1, wherein, The method for determining an offset value and the LO associated with that offset value from among the plurality of offset values ​​based on the distance, the wake-up delay, and their priority further includes: The UE compares the wake-up delay with the distances from the Locator to the Point of Purchase (PO) associated with multiple offset values ​​in ascending order, according to priority from high to low. The UE selects the first offset value whose distance is not less than the wake-up delay as the selected offset value and determines the LO associated with that offset value as the LO detected by the UE.

3. According to claim 2, if the UE fails to determine an offset value according to the method, the UE performs one of the following methods according to network instructions: - Use the largest offset value to determine the associated LO, and if the UE detects information on the LO instructing the UE to perform PO detection, the UE will detect the first PO after the LO whose distance from the LO satisfies the highest priority wake-up delay; -UE does not perform LO detection.

4. The method according to claim 1, wherein, The UE determines multiple offset values ​​from multiple offset parameters configured by the system, including: The difference between the plurality of offset values ​​is an integer multiple of a unit length, wherein the unit length is one of the following: - The interval length between adjacent paging frames; - The length of the paging loop configured in the System Information Block (SIB).

5. The method according to claim 1, wherein, The UE determines the LP-WUS detection opportunity (LMO) from the determined LO, and at least one of the beam number, repetition number, and LP-WUS number used in the LMO also includes: The beam number used by the LMO is determined based on the quasi-co-located QCL parameters of the LMO, and a certain number of LMOs are determined for each beam number to be used, based on the default order or instructions from higher layers, as well as at least one of the repeating numbers and LP-WUS numbers used by them.

6. The method according to claim 1, wherein, The UE's detection of LP-WUS on the determined LMO also includes: The UE determines whether to detect LMO for a portion of the LP-WUS sequence number based on network instructions, according to one of the following: - UEs using the group sequence number configured by the higher layer; - The UE uses the packet sequence number configured by the higher layer, and the higher layer instructs the UE to send LP-WUS first.

7. 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 6.

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