Method performed by user equipment, and user equipment

Abstract

The present disclosure provides a method performed by a user equipment, and a user equipment. The method comprises: on the basis of a number P of POs associated with one LO and / or a number Q of LOs associated with one PO, determining a reference PO and / or a reference PF in a paging cycle period for determining the location of an LO, P and Q being determined by a UE on the basis of parameters in a system configuration message; determining an offset value for determining an offset of the LO relative to the reference PO and / or the reference PF; and determining the location of the LO on the basis of the offset value and the reference PO and / or the reference PF, wherein determining a reference PF comprises determining a system frame number (SFN) used by the reference PF, determining a reference PO comprises determining an index of the reference PO in the PF, and determining an offset value for determining an offset of the LO relative to the reference PO and / or the reference PF comprises determining an index of the used offset value among multiple offset values configured by a network. Thus, reliability can be ensured while reducing the power consumption of the UE.

Description

Method performed by user equipment and user equipment TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of wireless communication, and in particular to a method performed by user equipment for determining downlink resources and a corresponding user equipment. BACKGROUND

[0002] This section introduces aspects that can be helpful in better understanding the various aspects of the present disclosure. Accordingly, the statements in this section are to be read in this light, and not as admissions of prior art or what is not prior art.

[0003] In 5G system, in addition to latency, reliability, availability, etc., energy efficiency of user equipment is one of the key elements of 5G. Generally, user equipment consumes tens of milliwatts in RRC idle or inactive state, and hundreds of milliwatts in RRC connected state. According to different application scenarios, user equipment may need to be charged every week or every day. Therefore, it is necessary to further reduce the power consumption of user equipment and prolong the battery life to improve energy efficiency and obtain better user experience. For devices using micro batteries or inconvenient to charge, such as sensors, automatic controllers, wearable devices, etc., the standby time may be 1-2 weeks or longer, and it is more critical to improve the energy use efficiency.

[0004] User equipment can generally save power using discontinuous reception (DRX). To ensure connectivity, user equipment needs to wake up every DRX cycle to detect control channels. Even when there is no data transmission for user equipment, user equipment periodically consumes power. If user equipment can only wake up when there is a business transmission requirement, the power consumption of user equipment will be greatly reduced. Therefore, user equipment can configure a low-power auxiliary receiver to detect the wake-up signal (LP-WUS) sent by the base station. The main receiver of the user equipment can remain in a low-power state (e.g., sleep state) until the low-power receiver receives the LP-WUS signal and wakes up the main receiver for corresponding data processing. In this way, the business processing requirements of user equipment can be met using less power consumption. To achieve such a design goal, there are several problems to be solved in the system, such as how to find a LO based on the PO of the UE and a plurality of offset parameters configured by the base station when the idle state UE searches for the LP-WUS in the time domain, and how to wake up the associated PO after detecting the LP-WUS in the LO, etc. SUMMARY

[0005] To solve at least one of the above problems, the present disclosure provides a method performed by a user equipment and a user equipment, so that the UE can find the location of the corresponding LO when searching for LP-WUS for transmitting information indicating whether the UE performs paging PDCCH detection in the time domain, thereby being able to ensure reliability while reducing the power consumption of the UE.

[0006] According to the present disclosure, a method performed by a user equipment UE is proposed, comprising: determining a reference PO in a paging cycle period for determining the location of an LO and / or a reference paging frame PF, the LO being a set of low-power wake-up signal LP-WUS detection opportunities LMOs, according to the number P of paging opportunities POs associated to one LO and / or the number Q of LOs associated to one PO determined by the UE according to parameters in a system configuration message; determining an offset value for determining the offset of the LO relative to the reference PO and / or reference PF; and determining the location of the LO according to the offset value and the reference PO and / or reference PF, the determination of the reference PF comprising determining the system frame number SFN used by the reference PF, the determination of the reference PO comprising determining the sequence number of the reference PO in the PF, the determination of the offset value for determining the offset of the LO relative to the reference PO and / or reference PF comprising determining the sequence number of the offset value used in a plurality of offset values configured by the network.

[0007] In addition, according to the present disclosure, a user equipment is proposed, comprising: a processor; and a memory storing instructions, wherein the instructions perform the above-mentioned method when executed by the processor.

[0008] Inventive Effects

[0009] According to the present disclosure, the UE can find the location of the corresponding LO when searching for LP-WUS for transmitting information indicating whether the UE performs paging PDCCH detection in the time domain, thereby being able to ensure reliability while reducing the power consumption of the UE. BRIEF DESCRIPTION OF DRAWINGS

[0010] The above and other features of the present disclosure will become more apparent by describing in detail the embodiments thereof with reference to the attached drawings, in which:

[0011] FIG. 1 is a schematic diagram showing the POs of the UE in a paging cycle period according to an embodiment of the present disclosure.

[0012] FIG. 2 is a schematic diagram showing an example of grouping users on one PO.

[0013] FIG. 3 is a schematic diagram showing the basic process of a method performed by a user equipment UE in an embodiment of the present disclosure.

[0014] FIG. 4 is a schematic diagram showing an example of determining the location of an LO in an embodiment of the present disclosure.

[0015] FIG. 5 is a diagram illustrating an example of determining a location of an LO in an embodiment of the disclosure.

[0016] FIG. 6 is a diagram illustrating an example of determining a location of an LO in an embodiment of the disclosure.

[0017] FIG. 7 is a diagram illustrating an example of determining a location of an LO in an embodiment of the disclosure.

[0018] FIG. 8 is a diagram illustrating an example of determining a location of an LO in an embodiment of the disclosure.

[0019] FIG. 9 is a block diagram of a user equipment (UE) according to an embodiment of the disclosure. DETAILED DESCRIPTION

[0020] The present disclosure is described in detail below with reference to the attached drawings and specific embodiments. It should be noted that the present disclosure is not limited to the specific embodiments described herein, but only by the scope of the appended claims, and their equivalents. Also, detailed descriptions of well-known functions and components are omitted to avoid obscuring the present disclosure in unnecessary detail. Furthermore, the specific embodiments are presented in terms of methods that can be implemented as instructions processed by a computer, a processor or a controller, and are not intended to be limited to these specific embodiments, which can be implemented to achieve the solutions described herein, and can be implemented using other computer systems, hardware, software, firmware, middleware components, mechanisms, electronic circuitry, etc.

[0021] Generally, all terms used herein are to be interpreted according to their ordinary meaning in the technical field, unless a different meaning is clearly given and / or is implied from the context of their usage. All references to a term in the singular sense include the plural sense, unless explicitly stated otherwise. All references to numbers can be understood to include a range of numbers, unless explicitly stated otherwise. All references to a step or a process in the embodiments of the present disclosure are to be interpreted as referring to at least one step or process, unless explicitly stated otherwise. The steps or processes of any method in the embodiments of the present disclosure need not be performed in the exact order stated, unless explicitly stated or implicitly implied. Any feature of any embodiment of the present disclosure can be applied to any other embodiment, where suitable. Likewise, any advantage of any embodiment of the present disclosure can be applied to any other embodiment, where suitable. Any embodiment of the present disclosure can be implemented in software, hardware, firmware, middleware components, mechanisms, electronic circuitry, etc.

[0022] The following describes in detail a plurality of embodiments according to the present disclosure, taking a 5G / NR mobile communication system and its subsequent evolved versions as an example application environment. However, it should be noted that the present disclosure is not limited to the following embodiments, but can be applied to more other wireless communication systems, such as 5G after the communication system and 4G, 3G mobile communication system before 5G, 802.11 wireless network, etc.

[0023] Some terms related to the present disclosure are described below. Unless specifically stated, the terms related to the present disclosure are defined as follows. The terms given in the present disclosure can be named differently in 4G / LTE, 4G+ / LTE-Advanced, LTE-Advanced Pro, 5G / NR, and later wireless communication systems or other communication systems, but uniform terms are used in the present disclosure to simplify the description. When the methods and procedures in the present disclosure are applied to a specific system, the terms used in the corresponding system can be replaced.

[0024] 3GPP: 3rd Generation Partnership Project

[0025] LTE: Long Term Evolution

[0026] NR: New Radio

[0027] UE: User Equipment

[0028] gNB: NR base station

[0029] BWP: BandWidth Part

[0030] SFN: System flame number

[0031] OFDM: Orthogonal Frequency Division Multiplexing

[0032] SCS: sub-carrier spacing

[0033] RB: Resource Block

[0034] TDD: Time Division Duplexing

[0035] FDD: Frequency Division Duplexing

[0036] CSI: Channel State Information

[0037] DCI: Downlink Control Information

[0038] CRC: Cyclic Redundancy Check, cyclic redundancy check

[0039] QCL: Quasi co-location, quasi co-location

[0040] HARQ: Hybrid Automatic Repeat Request, hybrid automatic repeat request

[0041] CORESET: Control resource set, control resource set

[0042] MIB: Master Information Block, master information block

[0043] SIB: system information block, system information block

[0044] SSB: SS / PBCH block, synchronization signal / physical broadcast channel block

[0045] SRS: Sounding Reference Signal, sounding reference signal

[0046] DMRS: Demodulation Reference Signal, demodulation reference signal

[0047] CSI-RS: Channel State Information Reference Signal, channel state information reference signal

[0048] RACH: random-access channel, random access channel

[0049] PBCH: Physical broadcast channel, physical broadcast channel

[0050] PUCCH: Physical Uplink Control Channel, physical uplink control channel

[0051] PUSCH: Physical Uplink Shared Channel, physical uplink shared channel

[0052] PRACH: Physical random-access channel, physical random access channel

[0053] PDSCH: Physical downlink shared channel

[0054] PDCCH: Physical downlink control channel

[0055] UL-SCH: Uplink Shared Channel

[0056] DL-SCH: Downlink Shared Channel

[0057] C-RNTI: Cell Radio Network Temporary Identifier

[0058] P-RNTI: Paging RNTI

[0059] RA-RNTI: Random Access RNTI

[0060] CS-RNTI: Configured Scheduling RNTI

[0061] SI-RNTI: System Information RNTI

[0062] TC-RNTI: Temporary C-RNTI

[0063] LP-WUS: low power wake up signal

[0064] RRM: Radio Resource Management

[0065] RRC: Radio Resource Control

[0066] TCI: Transmission Configuration Indicator

[0067] MSB: Most Significant Bit

[0068] LSB: Least Significant Bit, least significant bit

[0069] PO: paging occasion, paging opportunity

[0070] PF: paging frame, paging frame

[0071] RRM: Radio Resource Management, radio resource management

[0072] PCI: Physical Cell Identifier, physical cell identifier

[0073] The following is a description of the technology associated with the solutions of the present disclosure. Unless otherwise specified, the meanings of the same terms in the specific embodiments are the same as in the associated technology.

[0074] It is worth pointing out that the user equipment UE involved in the present disclosure is any end device that accesses a communication network and receives services therefrom, which can be a smart phone, a mobile phone, a tablet computer, a mobile station, an access terminal, a sensor, a wearable device, etc. When the method used by the user equipment or the related process is described in the present disclosure, the user, the terminal, etc. can also be used, and the present disclosure does not specifically distinguish and limit these calls and the user equipment UE. The network equipment is the equipment that communicates with the user equipment, including but not limited to a wireless base station, a gNB, an eNB, a wireless AP, a wireless relay, a user equipment with relay capability, etc. The present disclosure can use the wireless base station as a form of implementation of the network equipment, and other forms of network equipment can be easily used to replace the specific implementation.

[0075] In the NR network, when there is no data transmission, the user equipment (UE) also maintains a data connection with the network to realize the anytime online network service. For example, the user equipment in the idle state (RRC_IDLE) or the inactive state (RRC_INACTIVE) regularly detects whether the base station sends a paging message to itself. When the paging message is detected, a wireless transmission can be established according to the indication of the network.

[0076] To receive the paging information sent by the network, the user equipment determines the paging cycle period (DRX cycle) and the location of the paging occasion (PO) in each paging cycle period according to the parameters configured by the network, and detects the paging PDCCH in the paging occasion PDCCH detection occasion, and performs the next action according to the content indicated in the paging PDCCH. According to the relevant protocol (for example, 38.304 v17.0.0) in NR, a UE in idle state or inactive state can detect a PO in each DRX cycle, and the UE can determine a plurality of POs of the UE in the time domain, for example, one PO in each paging cycle. For example, the user equipment can determine a plurality of paging parameters according to the network configuration: a paging cycle period parameter value T for receiving paging information, which represents that T radio frames are the length of a paging cycle; the number N of paging frames (PF) in a paging cycle; and the number Ns of POs in a PF. A paging frame is a radio frame, which can contain one or more POs or the start of a PO. Hereinafter, one or more POs associated with or contained in a PF can be referred to as a PF. For simplicity of description, the PF can be referred to as the PF of the PO, and the PO can also be referred to as the PF of the PO or the PO associated with the PF. Then the PF used to determine the PO of the UE can also be referred to as the PF of the UE. A paging occasion PO is composed of a plurality of paging PDCCH detection occasions (PDCCH monitoring occasion for paging, PDCCH MO, or simply MO). When multi-beam transmission is used in the network, different MOs can correspond to different beams, so that user equipment using different downlink beams can all obtain good reception effect. The user equipment determines one PO in each paging cycle to detect the paging PDCCH. Then the user equipment can select the MO in the PO to receive the PDCCH according to its own situation, for example, the user equipment selects a certain MO or a plurality of MOs to detect the paging PDCCH according to the information of SSB measurement. If the user equipment detects the paging PDCCH, the user equipment performs paging PDSCH reception or other related actions according to the DCI transmitted by the detected PDCCH.

[0077] For example, in a paging cycle of T radio frames, there are N paging frames, and the user equipment determines a paging frame (PF) in the paging cycle as the paging frame that the user equipment needs to detect paging information. When a paging frame PF has a plurality of POs, the user equipment determines one of them as the PO of the user equipment. The user equipment can obtain the frame number SFN of the PF corresponding to the PO that the user needs to detect according to the UE_ID and other parameters of the user equipment, so as to meet the following conditions:

[0078] (SFN + PF_offset) mod T = (T / N) * (UE_ID mod N)

[0079] wherein PF_offset is a network configured paging frame offset value, T is a paging cycle period determined by the user equipment. N is the number of paging frames in a paging cycle period. mod is a modulo operation. UE_ID is an identifier value of the UE for determining paging parameters determined according to relevant protocols in NR (e.g. 38.304 v17.0.0).

[0080] The user equipment determines the frame number of the paging frame PF, and then determines the PO to be detected. According to different network configurations, one PF can be associated with Ns POs, and the UE needs to determine to detect one PO to detect the related PDCCH, determine whether there is a corresponding paging message, etc. This PO can also be referred to as the PO of the UE. For example, the user equipment can determine the PO that the user equipment needs to detect according to the sequence number i_s of the PO, i_s can be obtained according to the following formula:

[0081] i_s = floor(UE_ID / N) mod Ns

[0082] wherein Ns is the number of POs in a PF, which can be obtained by the UE according to ns in the paging channel parameters. floor is a floor operation. mod is a modulo operation.

[0083] A specific example is shown in FIG. 1. In FIG. 1, the UE can determine the SFN of the PF of the UE according to the above formula and UE_ID and other parameters. Here Ns = 2, the UE can also determine the sequence number i_s of the PO of the UE in the PO of the PF i_s = 1, then the UE can determine the position of the PO that needs to detect the paging PDCCH in the paging cycle, that is, the PO of the UE in the figure. Only the PO of the UE in two paging cycles is shown in the figure, and the situation in other paging cycles can be similarly obtained.

[0084] After the user equipment determines the PO, the user equipment can determine the information of each detection opportunity MO according to the paging search space set parameters configured by the network. For example, the user equipment can start from the PF radio frame, and determine the serial number of the PO associated with the PF and S*X consecutive MOs of the PO according to the search space set configuration and CORESET configuration of the paging PDCCH. Wherein S is the number of SSBs actually transmitted in one SSB period in the network, that is, the number of SSB beams, which can be determined by the ssb-PositionsInBurst parameter in the SIB1. The value of X is 1 by default, and can also be configured by the higher layer. Each S MO of the PO is associated with S different SSB serial numbers, or satisfies the QCL relationship in the order of SSB numbering. The x*S+K paging PDCCH MO is the PO associated with the Kth transmitted SSB, x is 0, 1,..., X-1, and K is 1, 2,..., S. The paging PDCCH MO does not overlap with the uplink symbol, and is sequentially numbered from 0, starting from the first paging PDCCH MO of the PF. Optionally, if the additional time slot and / or symbol offset parameter is configured, the UE also determines the specific position of the MO after the offset after the PF radio frame.

[0085] The user equipment can detect the paging PDCCH in the related time-frequency resource according to the above method. The DCI in the paging PDCCH contains some information, such as whether the user has a corresponding paging message to receive, whether there is a specific short message information, and the like. If there is a paging message to receive, the DCI also indicates the PDSCH resource parameters for transmitting the paging message, including time domain resource, frequency domain resource, modulation mode and the like. The user equipment can receive the paging PDSCH according to these parameters.

[0086] Generally, the user equipment periodically detects the related paging information, even if the paging information does not indicate the data transmission related to the user equipment or the paging message sent by the user equipment is not related to the user equipment. Such behavior can consume a lot of user equipment power, thereby affecting the service life of the battery and reducing the user experience.

[0087] One possible approach is that the user equipment uses a low power receiver (LR) to detect the wake-up signal (WUS) sent by the base station. When there is no data transmission, the main receiver (MR) of the user equipment remains in a sleep state to minimize the power consumption of the user equipment; when there is data to be transmitted, the base station notifies the user equipment through the WUS. When the user equipment detects the indication carried in the WUS, the UE wakes up the MR and performs corresponding data processing. Since the WUS here is used for low-power receiver detection, it can also be called LP-WUS (low power LP-WUS). Hereinafter, the LP-WUS can also be referred to as WUS without further explanation. The LP-WUS signal can contain relevant information required to wake up the user equipment, such as containing the user equipment ID, or the indication bit corresponding to the UE or UE group, or the code word value related to the UE or UE group, or the user equipment detecting a specific sequence corresponding to the UE or UE group in the LP-WUS signal, etc. The user equipment can determine whether the user equipment is woken up by the LP-WUS signal according to the information in the LP-WUS. Only when the user equipment detects the wake-up indication information for the user or user group, the user equipment wakes up the main receiver to perform related data transmission, such as detecting the paging PDCCH on the associated paging opportunity (PO), or performing PRACH transmission in the corresponding window, etc. In this way, the user equipment can maintain the connection with the network with minimum power consumption and reduce the network response delay.

[0088] The LP-WUS signal can use the OOK (On-Off keying) waveform for transmission to reduce the complexity of the receiver. In order to be compatible with existing NR devices, OOK can be generated in a way compatible with OFDM symbols, such as using multi-carrier OOK. At this time, on the bandwidth of the LP-WUS signal, an OFDM symbol length can contain an integer number of OOK symbols, such as 1 / 2 / 4 / 8 / 16, etc., so that the base station can easily implement signal transmission of different waveforms. Therefore, the length, position, etc. of the related LP-WUS resource or LO or LMO in the time domain can also be described using OFDM symbol, time slot, etc. parameters.

[0089] The OOK symbol used by the base station to send the LP-WUS occupies a certain effective bandwidth. And in order to facilitate the implementation of the UE receiver, some guard bands are reserved outside the effective bandwidth and not used for transmitting signals, which can be called guard bands. In this invention, if not specially distinguished, the frequency domain bandwidth used for transmitting the LP-WUS includes the bandwidth used for actually transmitting the OOK symbol and the guard band.

[0090] The base station can also transmit a lower power synchronization signal (LP-SS) for UE to perform correlation-based synchronization and RRM measurement. The LP-SS can use a similar waveform and modulation as the LP-WUS, so that correlation processing can be performed with a low-power receiver.

[0091] When the base station indicates UE to perform correlation processing using the LP-WUS, the base station can transmit the correlation-based LP-WUS using an OOK signal, for example, using the ON and OFF states of the OOK signal to represent "1" and "0". At the same time, when the base station transmits the correlation-based OOK signal, the base station can also use other ways to transmit information on the resources used by the OOK signal. For example, when transmitting the ON symbol of the OOK, a specific sequence is transmitted on the time-frequency resources used, and the UE can determine different indication information according to different sequences. To simplify the description, the information determined by the UE according to the ON / OFF state of the OOK symbol on one LP-WUS can be referred to as first information, and the information represented by the sequence transmitted on the ON symbol can be referred to as second information. The UE can report its capability to the base station, for example, the ability to detect the first information according to the LP-WUS (referred to as capability 1), or the ability to detect the first and second information according to the LP-WUS (referred to as capability 2). If it is not explicitly stated in the disclosure whether the first or second information is used, the UE can determine the indication in the correlation-based LP-WUS according to the first and / or second information. In addition, the first and second information can transmit part or all of the same information.

[0092] When the UE determines whether the UE needs to detect the PO in the corresponding paging cycle according to the indication in the LP-WUS, it needs to determine the position of the associated LO, for example, to determine the position of the reference PO or PF and to select the corresponding offset value from the network-configured offset parameters when determining the LO according to the reference PO or PF and the offset. The following embodiments are provided to describe the embodiments of the disclosure in more detail.

[0093] In an NR network, a base station can configure one or more sets of LP-WUS resource parameters for a UE to use for detecting relevant LP-WUS signals, and the UE can detect LP-WUS on the LP-WUS resources determined by these parameters. Since these resources are periodically repeated in time and the base station does not always transmit LP-WUS signals on all of the resources (e.g., no LP-WUS can be transmitted when there is no UE to wake up in a certain cycle), these time-frequency resources that can be used to transmit LP-WUS are also referred to as LP-WUS monitoring occasions (LMOs) for the UE to detect LP-WUS. Considering that a cell can be covered using a beam (also referred to as a spatial filter) sweeping manner, different LMOs can use different beams to transmit LP-WUS, so that a UE can select an LMO with the best beam to detect LP-WUS. At this time, a set of several LMOs can be referred to as an LO (LP-WUS occasion), and one LO can include multiple LMOs, such as LMOs corresponding to SSB beams one by one, for transmitting LP-WUS using different beams. In the present disclosure, for ease of description, the LO / LMO resource configuration from the perspective of the base station and the LO / LMO detection from the perspective of the UE are described at times, and the two descriptions can be considered to be convertible.

[0094] One LO can be a set of multiple LMOs, and is composed of time-frequency resources (including subframes or OOK symbols or OFDM symbols and a number of RBs) for transmitting LP-WUS. Depending on the configuration manner of the base station, in one assumption, multiple beams are applied, and the UE assumes that the same LP-WUS is transmitted on all beams (on the LO). In another assumption, the UE can use different LMOs on the LO to transmit different LP-WUS to indicate information of different UEs. In the present disclosure, it is not limited to which assumption is used, and one can be described in a specific embodiment.

[0095] If the base station provides the LP-WUS related resource configuration, and the UE capability supports the UE to perform the LP-WUS detection, the UE can apply the related procedure to detect the LP-WUS on the LO. For example, the UE can detect the LO according to the configured period, and the UE detects at least one LO in each period. This period can be referred to as an LO detection cycle. The LO detection cycle can also be referred to as an LP-WUS detection cycle or an LP-WUS detection period or an LO detection period, and the like, and the LO detection cycle can be uniformly used in the following description. Since the UE detects the LO to determine whether the PO in the corresponding paging cycle needs to detect the PDCCH, the detection cycle can have a certain relationship with the paging cycle of the UE. For example, the detection cycle (length) is always equal to the paging cycle (length) used by the UE, and the base station can not configure the UE with the related LO detection cycle length parameter, and the UE can use the determined paging cycle length to determine the LO detection cycle length.

[0096] When the base station configures the LP-WUS resource parameters, it can be configured through system broadcast information, which contains the configuration information of all LOs in the cell. For an idle state or inactive state UE, it is not necessary to detect all LOs, and the UE needs to determine which indication information in the LP-WUS transmitted by the LO corresponds to the indication information indicating that the UE detects the paging PDCCH on the PO of the UE in a paging cycle. One method is that the UE determines the reference PO and / or reference PF in the paging cycle, and the UE can determine a related LO according to the offset of the reference PO or reference PF.

[0097] For the convenience of description of the related embodiments in the present disclosure, several parameters involved in the embodiments are described herein, which can be configured by the network through RRC signaling, for example, according to the LP-WUS related parameter configuration in the SIB broadcast message; or indirectly obtained from the RRC signaling configured parameters, for example, there is a certain conversion relationship between some parameters, and the UE can obtain the related other parameters from one or more parameters configured by the higher layer.

[0098] According to the method of determining the PO of the UE in the paging cycle, there can be many different UEs associated to the same PO. In order to improve the accuracy of the indication when using the LP-WUS to indicate whether the UE should detect the PDCCH in the related PO, the different UEs associated to one PO can be further grouped, and one UE can belong to a subgroup, and different indications can be used for different subgroups in the LP-WUS, so as to reduce the probability of false wake-up and ensure the effect of power saving of the UE. In the present disclosure, M can be used to represent the number of subgroups used in one PO, and M is usually an integer. The UE can directly obtain the serial number isub of the subgroup to which the UE belongs according to the high-layer configuration or determine the serial number isub of the subgroup to which the UE belongs according to other related parameters, which takes a value from 0 to M-1. For example, the high layer (such as the NAS layer) can configure the UE with an isub. Or, when the high layer does not configure the UE with an isub, the UE can calculate the isub according to some parameters.

[0099] At the same time, since the number of subgroups that can be indicated by one LP-WUS is limited, the subgroups in one PO can be further divided into a plurality of subgroup sets, and different LP-WUS can be used to indicate the subgroups in different subgroup sets, so that more LP-WUS can be used to indicate different subgroups, further improving the accuracy of the UE wake-up indication and the effect of power saving of the UE. In the present disclosure, Q can be used to represent the number of subgroup sets in one PO. On the other hand, the base station can use the LP-WUS transmitted on one LO to indicate the indication information of each subgroup in a subgroup set, at this time, Q also represents the number of LOs associated to one PO. Q is also usually an integer. The UE can determine the value of Q according to the parameters configured by the base station, when the base station does not configure the value, the value can be obtained according to the relationship of other parameters, or a default value 1 is used. The UE can directly obtain the serial number Idx_set of the subgroup set used by the UE according to the high-layer configuration or determine the serial number Idx_set of the subgroup set used by the UE according to other related parameters, which takes a value from 0 to Q-1. In addition, when Q represents the number of LOs associated to one PO, Idx_set also represents the serial number of the LO to be detected by the UE in the Q LOs.

[0100] A specific example is shown in FIG. 2, the users in one PO can be divided into M user subgroups, and further divided into Q=3 subgroup sets, each subgroup set contains M0, M1 and M2 subgroups, and the corresponding Idx_set is 0, 1 and 2 respectively. The base station can use three different LP-WUS to indicate the user subgroups in each subgroup set. In FIG. 2, offset0, offset1 and offset2 are also shown as examples of offset parameters.

[0101] When using LP-WUS to indicate whether the UE in a packet is performing paging PDCCH detection, the base station can use the codepoint value carried by LP-WUS to indicate one or more N on PO. LO Groups. Or it can be represented as N groups. LO This refers to the number of packets associated with a single LP-WUS. These packets may be associated with the same PO or with multiple consecutive POs. For example, the UE can determine the code point value corresponding to the packet it belongs to as i_inSet + iPO * M. Here, i_inSet is the sequence number of the UE's packet within its packet set. iPO is the sequence number of the UE's PO among one or more POs associated with the LO. If an LO in the system is associated with only one PO, then iPO = 0, meaning the UE can determine the code point value corresponding to the packet it belongs to as i_inSet. The UE can obtain the value of i_inSet through several methods. For example, when UE packets are evenly distributed across sets, it can be obtained using i_inSet = mod(isub, N). LO ); or i_inSet = isub-sum(Mi), where sum(Mi) is the sum of the number of packets in the set of all packets on the PO that are less than the sequence number of the packet set where the UE is located; or it can be configured directly by a higher layer (such as NAS).

[0102] The total number of different code point values ​​that an LP-WUS can indicate may be greater than, equal to, or less than N. LO For example, an LP-WUS uses 8 bits of valid information (excluding CRC) to transmit code point values. In this case, the maximum number of different code point values ​​is 256. The LP-WUS can indicate the activation information of up to 256 different packets. In this case, code point values ​​from 0 to 255 can be considered to indicate UEs with packet sequence numbers from 0 to 255. The base station can also configure certain code point values ​​to indicate combinations of several different packets to improve the efficiency of the indication. For example, a code point value can correspond to all combinations of packets on a PO or a packet set. When the UE detects this code point value in any packet set, the UE detects the relevant PO. For example, when an LP-WUS uses 9 bits of valid information, the UE determines N... LO If the value is 256, then the partial code point values ​​used to indicate a single group can be used to indicate a combination of groups to improve the efficiency of the indication.

[0103] Optionally, the UE determines the group or combination of groups corresponding to the code point value based on higher-layer configuration parameters. For example, when the UE configures several group combination lists through higher-layer parameters, the UE assigns the code point values ​​to the groups or combinations of groups in the list in descending order.

[0104] In one specific example, a base station configures a parameter uegrouplist in the base station configuration parameters to indicate a group or a combination of groups, and the uegrouplist is configured with 4 elements:

[0105] • allUEgroups, indicating all UE groups in one LO or LP-WUS associated PO

[0106] • UegroupsinPOIndex0, indicating all UE groups in the first PO in one LO or LP-WUS associated first PO

[0107] • UegroupsinPOIndex1, indicating all UE groups in the first PO in one LO or LP-WUS associated second PO

[0108] • UewithCategoryA, indicating all UEs with Category A in one LO or LP-WUS associated PO

[0109] In this example, the UE determines the valid number of bits of the LP-WUS is 8, and the codepoint values available for LP-WUS indication is 0-255, then the UE determines that the codepoint value 255 is used to indicate the first element in the uegrouplist, i.e. allUEgroups, the codepoint value 254 is used to indicate UegroupsinPOIndex0, the codepoint value 253 is used to indicate UegroupsinPOIndex1, the codepoint value 252 is used to indicate UewithCategoryA, and so on. The codepoint values not assigned by the higher layer parameters can be used to indicate the individual groups, e.g. the codepoint value 0 corresponds to the first UE group, the codepoint value 1 corresponds to the second UE group, and so on.

[0110] In another optional example, the UE determines the specific group combination according to the specific codepoint value and the value represented by the corresponding CRC. For example, when the UE detects the codepoint value Ncode in the LP-WUS, and the value of the CRC field is the bit inversion of the CRC check value calculated according to the codepoint value, the UE detecting the LO of the LP-WUS detects the paging PDCCH in the PO associated with the LO, i.e. at this time the codepoint value indicates that all UEs in the UE group associated with the LO perform paging PDCCH detection. Ncode can be a system predefined value, e.g. 0, or the maximum codepoint value, or half of the maximum codepoint value, etc. For example, the value of the CRC field is the bit inversion of the CRC check value calculated according to the codepoint value, assuming the CRC length is 8 bits, and the check bit calculated according to the codepoint value is 10010011, then the inverted bit is 01101100.

[0111] In another scenario, the base station may use different MOs within a single LO to transmit K LP-WUS indicating different packets. For example, if the LO has 8 MOs, the first 4 MOs use beams 0 / 1 / 2 / 3 to indicate LP-WUS for a first set of UE-related packets, and the last 4 MOs use beams 0 / 1 / 2 / 3 to indicate LP-WUS for a second set of UE-related packets. In this case, K is 2. The UE can first determine the relevant LO, and then, based on the relevant configuration, determine which MOs in the LO transmit LP-WUS indications related to the UE. If the UE does not configure a relevant K value, the UE can assume that the MOs in the LO indicate the same LP-WUS, meaning the K value is 1.

[0112] In some scenarios, the base station may configure multiple consecutive UE packets in a single LO to use LP-WUS to reduce LP-WUS overhead. In this case, the UE can determine the number of consecutive POs associated with a LO as P. For example, P can be configured with a value from the set {1, 2, 4, 8}, which easily adapts to various scenarios in the network where the paging parameter Ns is configured as 1, 2, or 4. The UE can determine the value of P based on the parameters configured by the base station. When the base station does not configure this value, it can obtain it based on the relationship of other parameters or use the default value of 1. When the P determined by the UE is greater than 1, the UE can determine the sequence number iPO of the UE's PO in these POs, for example, determining the sequence number iPO = ((UE_ID mod N)·Ns+i_s)mod P. If P is less than or equal to 1, iPO = 0.

[0113] These parameters may have certain constraints or conversion relationships, so in addition to obtaining the relevant parameter values ​​directly through the base station configuration, the UE may also obtain them through parameter conversion from other configurations. For example, when an LP-WUS can indicate the number of packets N... LO When the number of packets in a single PO is greater than the number of packets in all LOs, and the number of packets indicated by each LO is the same, the UE can use P=N. LO The value of P is obtained by / M; or by the more general formula P = ceil(N) LO / M) obtains the value of P, where ceil is the floor function. For example, when uniformly distributing user groups to a group set, the UE can obtain other parameters based on the operations between parameters. For instance, the UE can obtain the group set index Idx_set = floor(isub / N) LO (), where isub is the UE's packet sequence number. For example, if the UE determines P to be greater than 1, the UE determines Q to be 1; otherwise, the UE can use Q = M / N. LO Determine the value of Q. `floor` is the floor function.

[0114] When configuring LO-related resources and parameters, the system may have different configuration methods. Correspondingly, when the UE determines the relationship between the PO and the LO based on these configured parameters, there may be several ways. For example, according to one configuration, UEs detecting / associating with the same PO always detect the same PO. In another case, UEs associated with different POs can also detect the same LO, in which case the LP-WUS in one LO indicates UE groups on multiple POs. Yet another case is that UE groups detecting / associating with the same PO are divided into several sets, and UEs in each set detect the same LO. These different configuration scenarios may correspond to different combinations of P / Q parameters.

[0115] In this disclosure, when describing methods for selecting a resource / parameter / collection object from several resources / parameters / collections, a sequence number is used to identify a specific resource / parameter / collection object. Unless otherwise specified, the sequence numbers in this disclosure start from 0. That is, sequence number 0 corresponds to the first resource / parameter / collection object in the sequence, sequence number 1 corresponds to the second resource / parameter / collection object in the sequence, and so on. For the sake of simplicity, unless there are special circumstances, these will not be explained in detail later.

[0116] In an optional embodiment, the UE determines a reference PO (ref PO) and / or a reference PF (ref PF) for determining the location of the LO based on the parameters of the LP-WUS configured by the base station through system broadcast and paging parameters. The UE can further determine the location of the LO based on the reference PO and / or the reference PF. When determining the location of the LO based on the reference PO or the reference PF, the UE can determine an offset value from a plurality of offset values ​​configured by the network to determine the LO offset relative to the reference PO or the reference PF. The UE can determine the location of the LO before the reference PO based on the offset value, and the UE can detect / receive LP-WUS on the LO.

[0117] Figure 3 is a schematic diagram illustrating the basic process of a method performed by a user equipment (UE) in an embodiment of this disclosure. As shown in Figure 3, in one embodiment of this disclosure, the method performed by the user equipment (UE) includes steps S101 to S103.

[0118] In step S101, the reference PO and / or reference PF in the paging cycle used to determine the location of the LO are determined based on the number of POs P and / or the number of LOs Q associated with a LO as determined by the UE according to the parameters in the system configuration message.

[0119] In step S102, an offset value is determined for determining the offset of LO relative to reference PO and / or reference PF.

[0120] In step S103, a location of the LO is determined according to the offset value and the reference PO and / or the reference PF. Determining the reference PF includes determining a system frame number SFN used by the reference PF, determining the reference PO includes determining a sequence number of the reference PO in the PF, and determining the offset value used for determining the offset of the LO relative to the reference PO and / or the reference PF includes determining a sequence number of the offset value used in a plurality of offset values configured by the network.

[0121] According to the above method, the UE can find the location of the corresponding LO in the time domain when searching for the LP-WUS used for transmitting information indicating whether the UE performs paging PDCCH detection, so as to receive the LP-WUS while reducing the power consumption of the UE and ensuring reliability.

[0122] Optionally, the UE determines the reference PF according to at least one of the following methods

[0123] • The reference PF is a PF of the UE determined by the UE according to the paging parameters, and the SFN of the reference PF is the SFN of the PF of the UE

[0124] • If P is not greater than Ns, the reference PF is a PF of the UE determined by the UE according to the paging parameters, and the SFN of the reference PF is the SFN of the PF of the UE; otherwise, the UE determines the SFN of the reference PF to be SFN-floor(iPO / Ns)*T / N of the PF of the UE

[0125] Ns, T and N are the paging parameters described in the disclosure. The PF of the UE and the SFN thereof are described above for determining the PF associated with the PO detected by the UE in the paging cycle and the SFN thereof. iPO is the sequence number of the PO of the UE in the P POs associated with the LO.

[0126] Optionally, the UE determines the reference PO according to at least one of the following methods

[0127] • The reference PO is a PO of the UE determined by the UE according to the paging parameters, that is, the PO with the sequence number i_s

[0128] • The reference PO is a PO with the sequence number floor(i_s / P)*P on the reference PF

[0129] • If P is greater than 1, the reference PO is a PO with the sequence number floor(i_s / P)*P in the reference PF, otherwise the reference PO is a PO with the sequence number i_s in the reference PF

[0130] Optionally, the UE determines the sequence number i_offset used for determining the offset value of the LO according to at least one of the following methods

[0131] • i_offset=Idx_set

[0132] • i_offset = Idx_set + i_s * Q

[0133] • i_offset = Idx_set * Q + i_s

[0134] • i_offset = floor(i_s / P)

[0135] • i_offset = Idx_set + floor(i_s / P) * Q

[0136] • i_offset = Idx_set * Q + floor(i_s / P)

[0137] • if P >= Ns, i_offset = 0; else if P > 1, i_offset = floor(i_s / P); else i_offset = Idx_set + i_s * Q

[0138] • i_offset = floor(i_s*Q / P) * P / Q

[0139] • if P >= Ns, i_offset = 0; else, i_offset = floor(i_s / P)

[0140] In the following, the method and procedure for UE to determine the reference PO and reference PF and their indices, and to determine the offset value and its index are described using more specific examples.

[0141] In one aspect of the optional example, the UE determines the PO of the UE determined according to the paging parameters as the reference PO for determining the associated LO of the PO. That is, the reference PO determined by the UE in the paging cycle is the PO used by the UE to detect the paging PDCCH in the paging cycle, that is, the reference PO is the PO with index i_s on the PF, and the reference PF is the PF of the UE used by the UE to detect the paging PDCCH in the paging cycle. In this example, P is usually 1, and Q is an integer greater than or equal to 1, that is, the UEs in the same group set detect the same LO, and the UEs in different group sets detect different LOs. A specific example is shown in FIG. 4.

[0142] In the example of FIG. 4, a UE determines that there are Ns=4 POs in a PF according to the base station's paging parameter configuration. When a UE determines a PO in a paging cycle as the UE's PO, the UE uses it as the reference PO to determine the location of the LO. For example, in (a) of FIG. 4, a UE determines the 2ndPO in a PF as the UE's PO, and the UE can use this PO as the reference PO (RefPO in the figure) to determine the location of the LO.

[0143] In another aspect of the optional example, according to the network's configuration or system default settings, the base station applies the same offset value(s) to the POs in a PF when setting the location of the LO. In this case, the UE determines that the offset value applied by the UE is the offset value with sequence number i_offset=Idx_set. Idx_set is the sequence number of the UE's group in the user group set of the UE's PO. A specific example is shown in (a) of FIG. 4. In this figure, Q=2, that is, each PO is associated with two LOs, and the base station can configure two offset parameters offset0 and offset1, corresponding to offset sequence numbers i_offset=0 and i_offset=1, respectively. UEs using different reference POs can use one of the two offset parameters to determine the location of the LO to be detected by the UE. For example, UEs with UE group sequence number Idx_set=0 and i_offset=0 can use offset0 to determine the location of the relevant LO, and UEs with UE group sequence number Idx_set=1 and i_offset=1 can use offset1 to determine the location of the relevant LO. This figure only shows the offset relationship between the first two POs in a PF and the LO, and the offset relationship between the last two POs and the LO can be similarly obtained.

[0144] In another aspect of the optional example, the UE can determine the sequence number i_offset of the applied offset value according to the network configuration or the system default method. For example, the UE can determine the sequence number i_offset of the applied offset value as one of Idx_set+i_s*Q or Idx_set*Q+i_s. Idx_set is the sequence number of the UE group set that the UE belongs to in the UE group set on the PO. For example, as shown in (b) of FIG. 4, Q=2, i.e., two LOs are associated with each PO, and the base station can configure two offset parameters for each reference PO, i.e., eight values of offset0 / offset1 / offset2 / ... / offset7 are configured, and the UE using different reference POs can use one of the offset parameters to determine the position of the LO to be detected. The UE can select an offset value according to the sequence number of the offset value to determine the position of the LO. For example, the UE using the second PO of the PF as the reference PO and the sequence number of the UE group set that the UE belongs to is 0, and the UE determines i_offset=Idx_set+i_s*Q=0+1*2=2, i.e., offset2 is selected to determine the position of the LO to be detected. Only the offset relationship between the first two POs and the LOs in the PF is shown in the figure, and the offset relationship between the last two POs and the LOs can be similarly obtained.

[0145] In one aspect of the optional example, when the UE-determined P is less than or equal to the UE-determined number of POs Ns of one PF, the UE determines the reference PF as the PF of the UE in the paging cycle, otherwise the UE determines the reference PF as the frame number of the PF according to the SFN of the PF of the UE and the obtained PF, e.g., according to SFN-floor(iPO / Ns)*T / N of the PF of the UE. In this example, the UE-determined P is usually an integer greater than or equal to 1, and the UE-determined P value can be greater than Ns, i.e., there can be multiple POs of the PF associated with the same LO. The UE-determined Q value is 1, i.e., the UE detecting the same PO also always detects the same LO. Alternatively, if the UE-determined P is always less than or equal to the UE-determined Ns (e.g., the base station does not configure P, and the UE can assume a default value of 1), the UE always determines the reference PF as the PF of the UE in the paging cycle. In this case, the UE-determined P is usually an integer greater than or equal to 1, and the UE-determined P value is not greater than Ns. The UE-determined Q value is 1, i.e., the UE detecting the same PO also always detects the same LO.

[0146] In an example, the UE determines a reference PO in the Ns POs of the reference PF for determining the location of the LO. For example, the UE determines the PO with the sequence number of floor(i_s / P)*P in the reference PF as the reference PO. Where i_s is the sequence number of the PO of the UE in the PF when the UE determines the paging parameters.

[0147] An example is shown in (a) of FIG. 5, where a PF contains Ns=4 POs. For the example of P=1, the UE determines the reference PF as the PF of the UE, and the reference PO as the PO of the UE (i.e. the PO with sequence number i_s). For the example of P=2, the UE determines the reference PF as the PF of the UE, and the reference PO as the PO with sequence number floor(i_s / P)*P in the reference PF. For example, for a UE with i_s=1, the UE uses the reference PO as the previous adjacent PO, i.e. the PO with sequence number 0. For the example of P=8, the UE associated to the PO in the previous PF determines the reference PF as the previous PF, and the reference PO as the PO with sequence number floor(i_s / P)*P=0, i.e. the first PO in the PF. The UE associated to the PO in the next PF determines the reference PF as the previous PF, and the reference PO as the PO with sequence number floor(i_s / P)*P=0, i.e. the first PO in the PF.

[0148] In another example, the base station applies the same offset value(s) to the POs in the PF when configuring the LO, and the UE determines the sequence number i_offset of the offset value applied by the UE as 0. An example is shown in (a) of FIG. 5. In this example, the base station can configure an offset parameter offset0, and the UE using different reference POs can use the offset parameter to determine the location of the LO to be detected by the UE. In this example, only the offset relationship between the first two POs in the PF and the LO is shown, and the offset relationship between the last two POs in the PF and the LO can be similarly obtained.

[0149] In another optional example, depending on the network configuration or the system default method, independent offset values ​​(one or more) are applied to the POs in the PF. In this case, the UE determines the index i_offset of the offset value applied by the UE as floor(i_s / P)*P. A specific example is shown in Figure 5(b). In this figure, P=2, meaning that each LO is associated with two POs, and every two adjacent POs use the same offset parameter; P=1, meaning that each LO is associated with one PO, and the UE determines the index of the offset value used to determine the LO position as floor(i_s / P)*P=i_s. This figure only shows the schematic diagram of the offset relationship between the first two POs and LOs in the PF; the offset relationship between the last two POs and LOs can be obtained similarly.

[0150] In another alternative example, the UE determines the reference PF as the UE's PF in the paging loop. When the UE determines P to be greater than 1, the UE determines the reference PO to be the PO with sequence number floor(i_s / P)*P on the reference PF; otherwise, the reference PO is the UE's PO (i.e., the PO with sequence number i_s). An equivalent description of this method of determining PO is that the UE determines the reference PF as the UE's PF, and the UE determines the reference PO to be the PO with sequence number floor(i_s*Q / P)*P / Q on the reference PF. In this example, the UE determines P as an integer greater than or equal to 1, and the value of P determined by the UE is not greater than Ns. The value of Q determined by the UE can be an integer greater than or equal to 1, meaning that UEs in the same packet set detect the same LO, and UEs in different packet sets detect different LOs. Also, P and Q are usually not both greater than 1.

[0151] A specific example of this example is shown in Figure 6(a), where a PF contains Ns = 4 POs. In the example where P = 1 and Q = 2, the UE determines that the reference PF is the UE's PF, and the UE determines that the reference PO is the UE's PO (i.e., the sequence number is i_s). In the example where P = 2 and Q = 1, the UE determines that the reference PF is the UE's PF, and the UE determines that the reference PO is the floor-th (i_s*Q / P)*P / Q PO in the reference PF. For example, for a UE whose i_s is 1 determined based on paging parameters and UE_ID, the reference PO it uses is its preceding adjacent PO, which is the PO with sequence number 0. In the example where P=8 and Q=1, the reference PF determined by the UE associated with the PO in the previous PF is that previous PF, and the reference PO is the first PO of the PF with the sequence number floor(i_s*Q / P)*P / Q=0. The reference PF determined by the UE associated with the PO in the next PF is the reference PO of the previous PF with the sequence number floor(i_s*Q / P)*P / Q=0, which is also the first PO of the PF.

[0152] In another aspect of the optional example, according to the network configuration or system default setting, the base station sets the same offset value(s) for the POs in the PF when setting the LO positions, and the UE determines the offset value applied by the UE is the i_offset with the sequence number of Idx_set. Idx_set is the sequence number of the UE group set in which the UE is located in the UE group set on the PO of the UE. A specific example is shown in (a) of FIG. 6. In the example of P=1 and Q=2 in the figure, each PO is associated with two LOs, and the base station can configure two offset parameters offset0 and offset1 corresponding to the offset sequence numbers i_offset of 0 and 1, respectively. The UE using different reference POs can use one of the two offset parameters to determine the position of the LO to be detected by the UE. For example, the UE in the UE group set with the sequence number of 0 uses offset0 to determine the position of the relevant LO, and the UE in the UE group set with the sequence number of 1 uses offset1 to determine the position of the relevant LO. Only the offset relationship between the first two POs and the LOs in the PF is shown in the figure, and the offset relationship between the last two POs and the LOs can be similarly obtained.

[0153] In another aspect of the optional example, according to the network configuration or system default method, independent offset value(s) are applied to the POs in the PF, and the UE determines the sequence number i_offset of the offset value applied by the UE is Idx_set+floor(i_s / P)*Q or i_offset=Idx_set*Q+floor(i_s / P). Idx_set is the sequence number of the UE group set in which the UE is located in the UE group set on the PO of the UE. A specific example is shown in (b) of FIG. 6. In the figure, P=1 and Q=2, that is, each PO is associated with two LOs, and the base station can configure two offset parameters for each reference PO, that is, 8 values of offset0 / offset1 / offset2 / ... / offset7 are configured, and the UE using different reference POs can use one of the offset parameters to determine the position of the LO to be detected by the UE. The UE can select an offset value according to the sequence number of the offset value to determine the position of the LO, for example, the UE using the second PO of the PF as the reference PO, and the sequence number of the UE group set in which the UE is located is 0, and the UE selects offset2 to determine the position of the LO to be detected by the UE. Only the offset relationship between the first two POs and the LOs in the PF is shown in the figure, and the offset relationship between the last two POs and the LOs can be similarly obtained.

[0154] In another optional example, the UE determines a reference PF for the UE to determine the location of the LO according to the reference PF. When the UE determined P is less than the UE determined Ns, the reference PF is the PF of the UE and the SFN of the PF is determined according to the determination. Otherwise, the reference PF is the PF of the UE minus floor(iPO / Ns)*T / N radio frames, i.e., the SFN of the reference PF is the SFN of the PF of the UE minus floor(iPO / Ns)*T / N. In this example, the UE determined P is usually an integer greater than or equal to 1, and the UE determined P value can be greater than Ns, i.e., there can be multiple PFs whose POs are associated to the same LO. The UE determined Q value is 1, i.e., the UE detecting the same PO also always detects the same LO.

[0155] A specific example is shown in Figure 7(a). In the example of P = 2, the UE determines the reference PF to be the PF of the UE. In the example of P = 8, the UE determines the reference PF to be the previous PF for the UE whose POs are associated to the previous PF, and the reference PF to be the previous PF for the UE whose POs are associated to the next PF, i.e., the SFN of the reference PF is the SFN of the PF of the UE minus floor(iPO / Ns)*T / N.

[0156] In another aspect of the optional example, one or more offset values are applied to the determination of the location of the LO according to the reference PF according to the network configuration or system default method, in which case the UE can determine the sequence number i_offset of the offset value used to determine the location of the LO. Optionally, when one of the following is true, the UE determines the sequence number to be Idx_set + floor(i_s / P)*Q, otherwise the UE determines the sequence number to be 0:

[0157] • the UE determined reference PF is the PF of the UE

[0158] • the UE determined P is less than or equal to Ns

[0159] Optionally, the UE can also determine the sequence number of the offset according to the following method:

[0160] • if P ≥ Ns, i_offset = 0; otherwise, if also P > 1, i_offset = floor(i_s / P), otherwise i_offset = Idx_set + i_s*Q; or in the form of pseudo code: If P ≥ Ns, i_offset = 0, else If P > 1, i_offset = floor(i_s / P), else i_offset = Idx_set + i_s*Q.

[0161] If Q = 1, the above method can be further simplified as

[0162] • If P ≥ Ns, i_offset = 0, else, i_offset = floor(i_s / P)

[0163] One specific example is shown in Figure 7(b). For the example of P = 2, the UE determines the index of the offset value of the LO position determined according to the reference PF as Idx_set + floor(i_s / P)*Q, for example, for the UE with i_s determined according to the paging parameters and UE_ID, etc. as 1, the index of the offset value it uses is Idx_set corresponding to its UE. For the example of P = 8, the UE determines the reference PF as the previous PF, and the index of the offset value as Idx_set + floor(i_s / P)*Q = 0.

[0164] After the UE determines the reference PO / PF and the index of the offset value or the offset value for determining the LO, it can determine the position of the LO associated with the PO according to the offset value. One PO in NR is a set of S*X consecutive PDCCH MOs, S is the number of SSBs actually transmitted, which can be determined according to the ssb-PositionsInBurst parameter in SIB1. X is the value of the nrofPDCCH-MonitoringOccasionPerSSB-InPO parameter configured by higher layer, if the parameter is not configured, X is 1. The x*S+Kthpaging PDCCH MO is the PO associated with the Kthtransmitted SSB, x is a value of 0, 1,..., X-1, K is a value of 1, 2,..., S. The paging PDCCH MO does not overlap with the uplink symbol, and is sequentially numbered from 0, starting from the first paging PDCCH MO of the PF. Similarly, one LO is also a set of LMOs. One specific example is shown in Figure 8. In Figure 8, one LO contains two LMOs, and one reference PO also has two paging MOs. In Figure 8(a), the UE can determine an offset value from the configuration parameters of the base station according to the determined index of the offset value, and then determine the reference position according to the reference PO or the reference PF, and the starting position of the LO. Figure 8(b) is another example, the UE can determine an offset value O from the configuration parameters of the base station according to the determined index of the offset value, and the common offset value 1 of the multiple LOs associated with the reference PO or the reference PF, and then determine the reference position according to the reference PO or the reference PF as the starting position of the LO of the UE.

[0165] In another aspect of the embodiment, when the UE determines the LO according to the reference PO and the offset, it also determines the reference position of the reference PO for the offset, for example, one symbol or one slot.

[0166] When the firstPDCCH-MonitoringOccasionOfPO parameter is present (i.e. the UE can acquire the parameter through high layer signaling such as SIB), the starting PDCCH MO of the i_s+1thPO is determined by the (i_s+1)thvalue in the firstPDCCH-MonitoringOccasionOfPO parameter; otherwise, the (i_s+1)thPO's starting PDCCH MO (index) is equal to i_s*S*X.

[0167] Optionally, the reference position of the reference PO with index i_ref is determined as one of the following methods:

[0168] • the first symbol of the i_ref*S*X PDCCH MOs

[0169] • the symbol before the first symbol of the i_ref*S*X PDCCH MOs

[0170] • the starting time or starting symbol of the slot where the first symbol of the i_ref*S*X PDCCH MOs is located

[0171] • the ending time or last symbol of the slot before the slot where the first symbol of the i_ref*S*X PDCCH MOs is located

[0172] • the symbol position corresponding to the (i_ref+1)thvalue in the firstPDCCH-MonitoringOccasionOfPO parameter when the firstPDCCH-MonitoringOccasionOfPO parameter is present

[0173] • the symbol position before the symbol corresponding to the (i_ref+1)thvalue in the firstPDCCH-MonitoringOccasionOfPO parameter when the firstPDCCH-MonitoringOccasionOfPO parameter is present

[0174] • the first symbol of the first PDCCH MO of the reference PO

[0175] • the symbol before the first symbol of the first PDCCH MO of the reference PO

[0176] • the starting time or starting symbol of the slot where the first symbol of the first PDCCH MO of the reference PO is located

[0177] • the ending time or last symbol of the slot before the slot where the first symbol of the first PDCCH MO of the reference PO is located

[0178] Where i_ref is the sequence number of the reference PO on the reference PF determined by the UE.

[0179] Optionally, the UE determines the starting position of one LO according to the offset, and one LO can contain several LMOs according to one of the following methods:

[0180] • The first LMO that does not overlap with the uplink time slot or symbol from the time slot where the starting position is located is the first LMO of the LO

[0181] • The first LMO that does not overlap with the uplink time slot or symbol from the symbol where the starting position is located is the first LMO of the LO

[0182] After the UE determines the first LMO of the LO, the UE can determine several LMOs of the LO that do not overlap with the uplink time slot or symbol in sequence.

[0183] Different UEs can have different capabilities when receiving the LP-WUS, such as requiring different lengths of synchronization time, etc. The UE can make the base station know the UE's capability of receiving the LP-WUS through information in the UE capability report, such as the time of receiving one LP-WUS, the time of being able to receive the paging PDCCH according to the indication in the LP-WUS, and the size of the minimum time required, that is, the minimum delay time. At this time, the UE also determines the association between the LO and the PO according to the size of the minimum delay time reported by the UE, that is, according to the indication information in the LP-WUS detected on the LO to indicate the UE to detect the PDCCH on which associated PO.

[0184] According to the method in the present disclosure, the UE can determine the reference PO and the reference PF in the paging cycle, and the sequence number of the offset, so as to determine the position of the LO.

[0185] Optionally, the UE also determines the association between the LO and the PO according to the minimum delay reported by the UE and the offset of the LO and the reference PO / PF determined by the UE:

[0186] - When the offset is less than or equal to the minimum delay value reported by the UE, the UE determines the association between the LO and the PO of the UE in the same paging cycle as the reference PO / PF.

[0187] - When the offset is greater than the minimum delay value reported by the UE, the UE determines the association between the LO and the PO of the UE in the L paging cycles after the paging cycle where the reference PO / PF is located. L is the smallest natural number that satisfies L*T LO + the offset is greater than the minimum delay value reported by the UE. Typically, L = 1.

[0188] Optionally, the UE further determines the association between the LO and the PO according to the minimum delay reported by the UE and the distance between the LO and the PO of the UE in the paging cycle where the reference PO / PF is located:

[0189] - When the distance is less than or equal to the minimum delay reported by the UE, the UE determines the association between the LO and the PO of the UE in the same paging cycle as the reference PO / PF.

[0190] - When the distance is greater than the minimum delay reported by the UE, the UE determines the association between the LO and the PO of the UE in the L paging cycles after the paging cycle where the reference PO / PF is located. L is the smallest natural number that satisfies L*T LO + offset is greater than the minimum delay reported by the UE. Typically, L = 1.

[0191] Next, a user equipment that can execute the method described in detail above of the present disclosure as an embodiment will be described using FIG. 9.

[0192] FIG. 9 is a block diagram illustrating a user equipment UE to which the present disclosure relates.

[0193] As shown in FIG. 9, the user equipment UE 900 includes a processor 901 and a memory 902. The processor 901 can include, for example, a microprocessor, a microcontroller, an embedded processor, or the like. The memory 902 can include, for example, a volatile memory (such as a random access memory (RAM)), a hard disk drive (HDD), a non-volatile memory (such as a flash memory), or other storage, or the like. The memory 902 stores program instructions thereon. The instructions, when executed by the processor 901, can execute the above-described method performed by the user equipment, which is described in detail in the present disclosure.

[0194] The method and the related devices of the present disclosure have been described above in connection with preferred embodiments. It is understood by those skilled in the art that the method shown above is only exemplary, and the above-described embodiments can be combined with each other without contradiction. The method of the present disclosure is not limited to the steps and the order shown above. The network nodes and the user equipment shown above can include more modules, for example, modules that can be developed or will be developed in the future for base stations, MMEs, or UEs, etc. The various identifiers shown above are only exemplary and not restrictive, and the present disclosure is not limited to the specific information elements as the examples of the identifiers. Those skilled in the art can make many changes and modifications according to the teachings of the embodiments shown above, for example, the present disclosure uses "1" and "0" to represent the relevant indication information, which can be exchanged with each other without contradiction, that is, "0" is used to indicate the information indicated by "1" in the present disclosure, and "1" is used to indicate the information indicated by "0" in the present disclosure. For another example, some sequence numbers are arranged from small to large to correspond to bit positions from MSB to LSB in the examples of the present disclosure, which can also be arranged from large to small to correspond to bit positions from MSB to LSB without contradiction. These changes do not affect the determination of the relevant process by the UE according to the relevant indication.

[0195] It should be understood that the above-described embodiments of the present disclosure can be implemented by software, hardware, or a combination of software and hardware. For example, various components inside the base station and the user equipment in the above-described embodiments can be implemented by various 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), etc.

[0196] In the present disclosure, "base station" can refer to a mobile communication data and control switching center with large transmission power and wide coverage area, including functions such as resource allocation scheduling, data reception and transmission, etc. "User equipment" can refer to user mobile user equipment, for example, including mobile phones, notebooks, etc. User equipment that can communicate wirelessly with base stations or micro base stations.

[0197] Furthermore, embodiments of the present disclosure disclosed herein can be implemented on a computer program product. More specifically, the computer program product is a product having a computer readable medium having encoded thereon computer program logic, which, when executed on an computing device, provides related operations to implement the above-described technical solutions of the present disclosure. The computer program logic, when executed on at least one processor of a computing system, causes the processor to perform the operations (methods) described in the embodiments of the present disclosure. Such a configuration of the present disclosure is typically provided as software, code, and / or other data structures, or firmware or microcode, such as on a computer readable medium such as an optical medium (e.g., CD-ROM), floppy disk or hard disk, etc., or other media, or as a downloadable software image, shared database, etc., in one or more modules of an application program, etc. 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 the present disclosure.

[0198] Furthermore, each functional module or each feature of the base station device and the user equipment used in each of the above-described embodiments can be realized or executed by a circuitry, which is typically one or more integrated circuits. The circuitry designed to perform the functions described in the present specification can include a general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), or a field programmable gate array (FPGA), or other programmable logic devices, discrete gates or transistor logic, or a combination thereof. The general-purpose processor can be a microprocessor, or the processor can be a controller, a microcontroller, or a state machine. The above-described general-purpose processor or each circuitry can be configured by a digital circuit or can be configured by a logical circuit. Further, when a advanced technology for replacing the existing integrated circuit appears as the semiconductor technology advances, the advanced technology can be used for the integrated circuit of the present disclosure.

[0199] While the present disclosure has been shown and described with reference to the preferred embodiments thereof, it will be understood by those skilled in the art that various changes in form and details can be made therein without departing from the spirit and scope of the present disclosure. Therefore, the present disclosure should not be defined with the above-described embodiments but should be defined only by the following claims and their equivalents.

Claims

1. A method performed by a user equipment (UE), comprising: determining a reference paging occasion (PO) and / or a reference paging frame (PF) in a paging cycle period for determining a location of a low power wake-up signal (LP-WUS) detection opportunity (LMO) set according to a number P of POs associated to one LO and / or a number Q of LOs associated to one PO determined by the UE according to parameters in a system configuration message, the LO being the LMO set; determining an offset value for determining an offset of the LMO relative to the reference PO and / or reference PF; and determining the location of the LMO according to the offset value and the reference PO and / or reference PF, the determining the reference PF comprises determining a system frame number (SFN) used by the reference PF, the determining the reference PO comprises determining a sequence number of the reference PO in the PF, and the determining the offset value for determining the offset of the LMO relative to the reference PO and / or reference PF comprises determining a sequence number of the offset value used in a plurality of offset values configured by a network. 2.The method of claim 1, wherein, the reference PF is determined according to at least one of the following manners: determining the reference PF as a PF of the UE determined by the UE according to the paging parameters, and a SFN of the reference PF as a SFN of the PF of the UE; if P is not greater than Ns, determining the reference PF as a PF of the UE determined by the UE according to the paging parameters, and a SFN of the reference PF as a SFN of the PF of the UE, otherwise, determining a SFN of the reference PF as a SFN-floor (i PO / Ns) *T / N of the PF of the UE, wherein, Ns: a number of POs in one PF; i PO: a sequence number of the PO of the UE in the P POs when P determined by the UE is greater than 1, otherwise 0; T: a length of one paging cycle period; N: a number of PFs in one paging cycle period. 3.The method of claim 1, wherein, the reference PO is determined according to at least one of the following manners: determining the reference PO as a PO of the UE determined by the UE according to the paging parameters, and a sequence number of the reference PO in the PF as i_s; determining the reference PO as a PO with a sequence number floor (i_s / P) *P on the reference PF; if P is greater than 1, determining the reference PO as a PO with a sequence number floor (i_s / P) *P in the reference PF, otherwise, determining the reference PO as a PO with a sequence number i_s in the reference PF. 4.The method of claim 2 or 3, wherein, the sequence number i_offset for determining the offset value is determined according to at least one of the following manners: i_offset=Idx_set; i_offset=Idx_set+i_s*Q; i_offset=Idx_set*Q+i_s; i_offset=floor (i_s / P) ; i_offset=Idx_set+floor (i_s / P) *Q; i_offset=Idx_set*Q+floor (i_s / P) ; if P≥Ns, i_offset=0; Otherwise, if P > 1, i_offset = floor(i_s / P); otherwise i_offset = Idx_set + i_s*Q; i_offset = floor(i_s*Q / P)*P / Q; If P >= Ns, i_offset = 0; Otherwise, i_offset = floor(i_s / P), where, Idx_set: the sequence number of the group set that the UE belongs to in the user group set on the PO of the UE.

5. The method of claim 1, wherein, When determining the position of the LO according to the reference PO and the offset value, a reference position of the sequence number i_ref of the reference PO on the reference PF is also determined.

6. The method of claim 5, wherein, The reference position of the sequence number i_ref of the reference PO on the reference PF is determined according to at least one of the following manners: the first symbol of the i_ref*S*X PDCCH MOs; the symbol before the first symbol of the i_ref*S*X PDCCH MOs; the start time or start symbol of the slot in which the first symbol of the i_ref*S*X PDCCH MOs is located; the end time or last symbol of the slot before the slot in which the first symbol of the i_ref*S*X PDCCH MOs is located; the symbol position corresponding to the i_ref+1th value in the parameter firstPDCCH-MonitoringOccasionOfPO if the parameter firstPDCCH-MonitoringOccasionOfPO can be acquired; the symbol position before the symbol position corresponding to the i_ref+1th value in the parameter firstPDCCH-MonitoringOccasionOfPO if the parameter firstPDCCH-MonitoringOccasionOfPO can be acquired; the first symbol of the first PDCCH MO of the reference PO; the symbol before the first symbol of the first PDCCH MO of the reference PO; the start time or start symbol of the slot in which the first symbol of the first PDCCH MO of the reference PO is located; the end time or last symbol of the slot before the slot in which the first symbol of the first PDCCH MO of the reference PO is located, where, S: the number of actually transmitted synchronization signal / physical broadcast channel blocks SSBs; X: the value of the parameter nrofPDCCH-MonitoringOccasionPerSSB-InPO configured by the higher layer, and is 1 when the parameter is not configured.

7. The method of claim 1, wherein, In the case where one LO contains more than one LMO, the first LMO of the LO is determined according to one of the following manners: the first LMO of the LO is the first LMO that does not overlap with the uplink slot or symbol starting from the slot in which the start position is located; The first LMO that does not overlap with the uplink time slot or symbol from the symbol where the starting position is located is the first LMO for the LO. 8.The method of claim 1, wherein, The association between the LO and the PO is determined according to a minimum delay value reported by the UE and an offset of the LO from a reference PO and / or a reference PF determined by the UE. 9.A user equipment comprising: a processor; and a memory storing instructions, wherein the instructions, when executed by the processor, perform the method of any one of claims 1 to 8.

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