User equipment, base station and wireless communication method of low-power-consumption wake-up signal

Abstract

The embodiment of the invention provides a wireless communication method applied to a low power wakeup signal (LP-WUS) at a base station end, and the method comprises the steps: receiving or generating at least one subgroup-based LP-WUS which comprises at least one temporary subgroup identifier (ID), transmitting the at least one subgroup-based LP-WUS to at least one subgroup user equipment (UE), and transmitting the at least one subgroup-based LP-WUS to the base station end, wherein the at least one sub-group comprises a first sub-group and a second sub-group. A wireless communication method applied to an LP-WUS at a base station end comprises transmitting at least one resource and / or parameter related to the LP-WUS before transmitting the LP-WUS to at least one UE or at least one sub-group of UEs in a cell.

Description

Technical Field

[0001] This application relates to the field of wireless communication systems, and more specifically, to a wireless communication method for a user equipment (UE), a base station, and a low-power wake-up signal (LP-WUS). Background Technology

[0002] Energy efficiency is a fundamental requirement for fifth-generation (5G) systems because they support diverse use cases, including power-sensitive devices such as IoT industrial wireless sensors, controllers, and wearable devices. The power consumption of these devices depends on the length of the wake-up cycle, such as the paging cycle. To meet battery life requirements, eDRX cycles with large values ​​are expected, resulting in high latency, which is unsuitable for services requiring long battery life and low latency. For example, in fire detection and suppression use cases, fire shutters should be closed by actuators within 1 to 2 seconds after a fire is detected by a sensor, and fire sprinklers should open; therefore, long eDRX cycles cannot meet latency requirements. eDRX is clearly unsuitable for latency-sensitive use cases. In both DRx and eDRx cycles, the UE needs to wake up periodically once per DRX cycle, which dominates power consumption during periods without signaling or data traffic. If the UE could wake up only when triggered, such as during paging in idle / inactive states and PDCCH in connected states, power consumption could be significantly reduced. This can be achieved by using a wake-up signal to trigger the master radio (MR) and a separate receiver capable of monitoring the wake-up signal in ultra-low power, such as Figure 1A and Figure 1B As shown. In the prior art, various issues related to Low Power Wake-up Signals (LP-WUS) have been discussed, but no specific proposal has been made regarding the LP-WUS parameters that the UE needs to know. Therefore, a wireless communication method involving a User Equipment (UE), a base station, and Low Power Wake-up Signals (LP-WUS) is needed to address the problems in the prior art. Summary of the Invention

[0003] The purpose of this application is to propose a wireless communication method for a user equipment (UE), a base station, and a low-power wake-up signal (LP-WUS) to solve problems in the prior art and other issues.

[0004] In a first aspect of the embodiments of this application, a wireless communication method for a low-power wake-up signal (LP-WUS) applied to a base station includes receiving or generating at least one subgroup-based LP-WUS, including at least one temporary subgroup identifier ID; and transmitting the at least one subgroup-based LP-WUS to at least one subgroup of user equipment (UE).

[0005] In some embodiments of this application, transmitting the at least one subgroup-based LP-WUS to the at least one subgroup of UEs further includes: transmitting a first subgroup-based LP-WUS to the first subgroup of UEs, the first subgroup-based LP-WUS including a first temporary subgroup identifier ID, wherein the first subgroup of UEs is in an idle / inactive state.

[0006] In some embodiments of this application, the LP-WUS wireless communication method further includes using a first temporary subgroup ID in the first subgroup.

[0007] In some embodiments of this application, the first subgroup-based LP-WUS is transmitted to the UE of the first subgroup based on the paging subgroup, and the first temporary subgroup ID matches the paging subgroup.

[0008] In some embodiments of this application, the first temporary subgroup ID is based on a first code point, and the first code point is mapped to a paging subgroup ID.

[0009] In some embodiments of this application, transmitting the at least one subgroup-based LP-WUS to the at least one subgroup of UEs further includes: transmitting a second subgroup-based LP-WUS to a second subgroup of UEs, the second subgroup-based LP-WUS including a first temporary subgroup identifier ID, wherein the second subgroup of UEs is in a connected state.

[0010] In some embodiments of this application, the LP-WUS wireless communication method further includes using a second temporary subgroup ID in the second subgroup.

[0011] In some embodiments of this application, the second subgroup-based LP-WUS is transmitted to the UE of the second subgroup based on the second subgroup, and the second temporary subgroup ID matches the second subgroup.

[0012] In some embodiments of this application, the second temporary subgroup ID is based on a second code point, and the second code point is mapped to the UE of the second subgroup.

[0013] In some embodiments of this application, the information carried in the at least one subgroup-based LP-WUS includes at least one temporary subgroup ID and at least one subgroup master radio MR wake-up indication field.

[0014] In some embodiments of this application, the at least one subgroup MR wake-up indication field includes information on the MR of the UE in the at least one subgroup.

[0015] In some embodiments of this application, when the information includes a first value, the UE of the at least one subgroup wakes up the MR, and / or, when the information includes a second value, the UE of the at least one subgroup does not need to wake up the MR.

[0016] In some embodiments of this application, the information carried in the at least one subgroup-based LP-WUS includes at least one temporary subgroup ID and at least one UE MR wake-up indication field.

[0017] In some embodiments of this application, the at least one UE wake-up indication field includes a bitmap for waking up the MR of the UE in the at least one subgroup.

[0018] In some embodiments of this application, when the bitmap includes a first value, the UE of the at least one subgroup wakes up the MR, and / or when the bitmap includes a second value, the UE of the at least one subgroup does not need to wake up the MR.

[0019] In a second aspect of the embodiments of this application, a wireless communication method for a low-power wake-up signal (LP-WUS) applied to a base station includes transmitting at least one resource and / or parameter associated with the LP-WUS before transmitting the LP-WUS to at least one UE or at least one subgroup of UEs in the cell.

[0020] In some embodiments of this application, the at least one resource and / or parameter associated with the LP-WUS includes at least one LP-WUS timing, at least one LP-WUS frame, at least one LP-WUS frequency position, at least one low-power synchronization signal LP-SS, and / or LP-WUS information.

[0021] In some embodiments of this application, the LP-WUS timing is a set of K consecutive monitoring timings in the time domain, during which a low-power wake-up receiver LP-WUR is configured to perform a detection attempt to decode the LP-WUS.

[0022] In some embodiments of this application, K is the total number of monitoring times in the LP-WUS timings configured by the higher layer.

[0023] In some embodiments of this application, K is the total number of monitoring times in the LP-WUS timing configured by the higher layer through System Information Block 1 (SIB1).

[0024] In some embodiments of this application, the position of each LP-WUS timing point in the time domain is based on a reference point and an offset from the reference point to the first monitoring timing point of the LP-WUS.

[0025] In some embodiments of this application, the reference point is the paging timing PO for waking up the MR, and the offset is the synchronization signal block SSB level offset between the target PO and the first monitoring timing of the LP-WUS.

[0026] In some embodiments of this application, the reference point is a PO for waking up the MR, and the offset is a symbol / slot-level offset between the PO and the first monitoring timing of the LP-WUS.

[0027] In some embodiments of this application, the reference point is the SSB, and the offset is a symbol / slot-level offset between the SSB and the first monitoring opportunity of the LP-WUS.

[0028] In some embodiments of this application, the reference point is LP-SS, and the offset is a symbol / slot-level offset between the LP-SS and the first monitoring time of the LP-WUS.

[0029] In some embodiments of this application, the reference point is a radio frame, and the offset is a symbol / slot-level offset between the start of the radio frame and the first monitoring moment of the LP-WUS.

[0030] In some embodiments of this application, the wireless frame is a frame related to LP-WUS timing.

[0031] In some embodiments of this application, at least one frequency resource based on the LP-WUS of at least one UE or the LP-WUS of at least one subgroup of UEs, and / or the at least one LP-SS is configured to the at least one UE or the at least one subgroup of UEs via system information.

[0032] In some embodiments of this application, at least one frequency resource based on the LP-WUS of at least one UE or the LP-WUS of at least one subgroup of UEs is derived from at least one frequency resource of the at least one LP-SS.

[0033] In some embodiments of this application, the LP-WUS information is configured via system information to at least one UE or the UE of the first subgroup in an idle / inactive state.

[0034] In some embodiments of this application, the LP-WUS information is configured to the at least one UE or the UE of the second subgroup that is in a connected state via system information or via Radio Resource Control (RRC) signaling.

[0035] In some embodiments of this application, the LP-WUS information includes the frequency location and / or size of the LP-WUS, the number of LP-WUS frames, at least one LP-WUS timing for each LP-WUS frame, a reference point, an offset, the total number of symbols for each LP-WUS, the number of subgroups for each LP-WUS, the number of paging timings related to the number of LP-WUS timings for UEs in the first subgroup, and / or the number of physical downlink control channels (PDCCHs) related to the number of LP-WUS timings for UEs in the second subgroup.

[0036] In a third aspect of the embodiments of this application, a wireless communication method for a low-power wake-up signal (LP-WUS) applied to a user equipment (UE) side includes receiving at least one subgroup-based LP-WUS, including at least one temporary subgroup identifier ID for the UE of at least one subgroup; and monitoring at least one subgroup-based LP-WUS timing.

[0037] In some embodiments of this application, receiving at least one subgroup-based LP-WUS for at least one subgroup of UEs further includes: receiving a first subgroup-based LP-WUS, the first subgroup-based LP-WUS including a first temporary subgroup identifier ID, wherein the UEs of the first subgroup are in an idle / inactive state.

[0038] In some embodiments of this application, the LP-WUS wireless communication method further includes using a first temporary subgroup ID in the first subgroup.

[0039] In some embodiments of this application, a first subgroup-based LP-WUS is received for a UE of a first subgroup based on a paging subgroup, and the first temporary subgroup ID matches the paging subgroup.

[0040] In some embodiments of this application, the first temporary subgroup ID is based on a first code point, and the first code point is mapped to a paging subgroup ID.

[0041] In some embodiments of this application, receiving at least one subgroup-based LP-WUS for at least one subgroup of UEs further includes: receiving a second subgroup-based LP-WUS, the second subgroup-based LP-WUS including a first temporary subgroup identifier ID, wherein the UEs of the second subgroup are in a connected state.

[0042] In some embodiments of this application, a second temporary subgroup ID is further included in the second subgroup.

[0043] In some embodiments of this application, a second subgroup-based LP-WUS is received for a UE of the second subgroup, and the second temporary subgroup ID matches the second subgroup.

[0044] In some embodiments of this application, the second temporary subgroup ID is based on the second code point, and the second code point is mapped to the UE of the second subgroup.

[0045] In some embodiments of this application, the information carried in at least one subgroup-based LP-WUS includes at least one temporary subgroup ID and at least one subgroup master radio MR wake-up indication field.

[0046] In some embodiments of this application, at least one subgroup MR wake-up indication field includes information about the MR of the UE in the at least one subgroup.

[0047] In some embodiments of this application, when the information includes a first value, the UE of at least one subgroup wakes up the MR, and / or, when the information includes a second value, the UE of at least one subgroup does not need to wake up the MR.

[0048] In some embodiments of this application, the information carried in at least one subgroup-based LP-WUS includes at least one temporary subgroup ID and at least one UE MR wake-up indication field.

[0049] In some embodiments of this application, the at least one UE wake-up indication field includes a bitmap for waking up the MR of the UE in the at least one subgroup.

[0050] In some embodiments of this application, when the bitmap includes a first value, at least one subgroup of UEs wakes up the MR, and / or when the bitmap includes a second value, at least one subgroup of UEs does not need to wake up the MR.

[0051] In a fourth aspect of the embodiments of this application, a wireless communication method for a low-power wake-up signal (LP-WUS) is applied to a user equipment (UE) terminal, comprising: receiving at least one resource and / or parameter associated with the LP-WUS before receiving the LP-WUS for at least one UE or at least one subgroup of UEs in at least one cell.

[0052] In some embodiments of this application, at least one resource and / or parameter associated with the LP-WUS includes at least one LP-WUS timing, at least one LP-WUS frame, at least one LP-WUS frequency position, at least one low-power synchronization signal LP-SS, and / or LP-WUS information.

[0053] In some embodiments of this application, the LP-WUS timing is a set of K consecutive monitoring timings in the time domain, during which a low-power wake-up receiver LP-WUR is configured to perform a detection attempt to decode the LP-WUS.

[0054] In some embodiments of this application, K is the total number of monitoring times in the LP-WUS timings configured by the higher layer.

[0055] In some embodiments of this application, K is the total number of monitoring times in the LP-WUS timings configured by the higher layer via SIB1.

[0056] In some embodiments of this application, the position of each LP-WUS timing point in the time domain is based on a reference point and an offset from the reference point to the first monitoring timing point of the LP-WUS.

[0057] In some embodiments of this application, the reference point is the paging timing PO for waking up the MR, and the offset is the synchronization signal block SSB level offset between the target PO and the first monitoring timing of the LP-WUS.

[0058] In some embodiments of this application, the reference point is a PO for waking up the MR, and the offset is a symbol / slot-level offset between the PO and the first monitoring timing of the LP-WUS.

[0059] In some embodiments of this application, the reference point is the SSB, and the offset is a symbol / slot-level offset between the SSB and the first monitoring opportunity of the LP-WUS.

[0060] In some embodiments of this application, the reference point is LP-SS, and the offset is a symbol / slot-level offset between the LP-SS and the first monitoring time of the LP-WUS.

[0061] In some embodiments of this application, the reference point is a radio frame, and the offset is a symbol / slot-level offset between the start of the radio frame and the first monitoring moment of the LP-WUS.

[0062] In some embodiments of this application, the wireless frame is a frame related to LP-WUS timing.

[0063] In some embodiments of this application, at least one frequency resource based on the LP-WUS of at least one UE or the LP-WUS of at least one subgroup of UEs, and / or the at least one LP-SS is configured to the at least one UE or the at least one subgroup of UEs via system information.

[0064] In some embodiments of this application, at least one frequency resource based on the LP-WUS of at least one UE or the LP-WUS of at least one subgroup of UEs is derived from at least one frequency resource of the at least one LP-SS.

[0065] In some embodiments of this application, the LP-WUS information is configured via system information to at least one UE or the UE of the first subgroup in an idle / inactive state.

[0066] In some embodiments of this application, the LP-WUS information is configured to the at least one UE or the UE of the second subgroup that is in a connected state via system information or via Radio Resource Control (RRC) signaling.

[0067] In some embodiments of this application, the LP-WUS information includes the frequency location and / or size of the LP-WUS, the number of LP-WUS frames, at least one LP-WUS timing for each LP-WUS frame, a reference point, an offset, the total number of symbols for each LP-WUS, the number of subgroups for each LP-WUS, the number of paging timings related to the number of LP-WUS timings for UEs in the first subgroup, and / or the number of physical downlink control channels (PDCCHs) related to the number of LP-WUS timings for UEs in the second subgroup.

[0068] In a fifth aspect of this application, a base station includes a memory, a transceiver, and a processor coupled to the memory and the transceiver. The processor is configured to perform the method described above.

[0069] In a sixth aspect of this application, a user equipment (UE) includes a memory, a transceiver, and a processor coupled to the memory and the transceiver. The processor is configured to perform the method described above.

[0070] In a seventh aspect of the embodiments of this application, a non-transitory machine-readable storage medium stores instructions that, when executed by a calculator, cause the calculator to perform the above-described method.

[0071] In an eighth aspect of the embodiments of this application, a chip includes a processor configured to invoke and run a calculator program stored in a memory, so that a device on which the chip is installed performs the above-described method.

[0072] In a ninth aspect of the embodiments of this application, a calculator program is stored in a calculator-readable storage medium, causing the calculator to perform the above-described method.

[0073] In a tenth aspect of the embodiments of this application, a calculator program product includes a calculator program that causes the calculator to perform the above-described method.

[0074] In the eleventh aspect of the embodiments of this application, a calculator program causes a calculator to perform the above-described method.

[0075] In summary, by using at least one subgroup-based LP-WUS, including at least one temporary subgroup identifier (ID) for at least one subgroup of UEs, wherein the at least one subgroup comprises a first subgroup and a second subgroup, this method can reduce the overhead associated with at least one subgroup-based LP-WUS. By transmitting at least one LP-WUS-related resource and / or parameter before transmitting the LP-WUS to at least one UE or at least one subgroup of UEs, this prior knowledge enables at least one UE or at least one subgroup of UEs in the cell to efficiently process and decode the LP-WUS, thereby reducing detection complexity. Attached Figure Description

[0076] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings: To more clearly illustrate the embodiments or related technologies of this application, the following illustrations are briefly described in the embodiments. Obviously, these illustrations are only some embodiments of this application, and those with ordinary skills can obtain other illustrations based on these illustrations without any payment.

[0077] Figure 1A This is a schematic diagram illustrating an LP-WUR example.

[0078] Figure 1B This is a schematic diagram illustrating an LP-WUR example.

[0079] Figure 2 This is a block diagram illustrating communication between one or more user equipments (UEs) and a base station in a communication network system, based on embodiments of the present application.

[0080] Figure 3A This is a flowchart illustrating a wireless communication method for low-power wake-up signal (LP-WUS) applied to a base station, according to an embodiment of the present application.

[0081] Figure 3B This is a flowchart illustrating a wireless communication method for LP-WUS applied to a UE, according to an embodiment of the present application.

[0082] Figure 4This is a flowchart illustrating a subgroup procedure and a temporary subgroup ID assigned to idle / inactive UEs, according to an embodiment of the present application.

[0083] Figure 5 This is a flowchart illustrating a subgroup procedure and a temporary subgroup ID assigned to connected UEs, according to an embodiment of the present application.

[0084] Figure 6 This is a schematic diagram illustrating an LP-WUS that carries information in at least one subgroup of UEs, according to an embodiment of the present application.

[0085] Figure 7 This is a schematic diagram illustrating an LP-WUS carrying information for waking up UEs MR in at least one subgroup, according to an embodiment of the present application.

[0086] Figure 8 This is a flowchart illustrating a wireless communication method for LP-WUS applied to a base station, according to an embodiment of the present application.

[0087] Figure 9 This is a flowchart illustrating a wireless communication method for LP-WUS applied to a UE, according to an embodiment of the present application.

[0088] Figure 10 This is a schematic diagram illustrating an example of an LP-WUS timing with K monitoring opportunities, according to an embodiment of the present application.

[0089] Figure 11 This is a schematic diagram illustrating an example of an LP-WUS timing position with a target PO as a reference point and an SSB-level offset between the target PO and the LP-WUS, for idle / inactive UEs, according to an embodiment of the present application.

[0090] Figure 12 This is a schematic diagram illustrating an example of an LP-WUS timing position with a target PO as a reference point and a symbol / slot level offset between the target PO and the LP-WUS, for idle / inactive UEs, according to an embodiment of the present application.

[0091] Figure 13 This is a schematic diagram illustrating an example of an LP-WUS timing position with SSB as a reference point and symbol / slot level offset between SSB and LP-WUS, according to an embodiment of this application.

[0092] Figure 14This is a schematic diagram illustrating an example of an LP-WUS timing position with LP-SS as a reference point and a symbol / slot-level offset between LP-SS and the first monitoring timing of LP-WUS, for idle / inactive and connected UEs, according to an embodiment of the present application.

[0093] Figure 15 This is a schematic diagram illustrating an example of an LP-WUS timing position with LP-WUS as a reference point and a symbol / slot-level offset between the start of the LP-WUS frame and the first monitoring timing of LP-WUS, for idle / inactive and connected UEs, according to an embodiment of the present application.

[0094] Figure 16 This is a schematic diagram illustrating an example of an LP-WUS frequency resource implicitly derived from an LP-SS frequency resource, according to an embodiment of this application.

[0095] Figure 17 This is a block diagram illustrating a wireless communication system, according to an embodiment of the present application. Detailed Implementation

[0096] The embodiments of this application describe in detail the technical matters, structural features, achieved objectives, and effects, with reference to the accompanying drawings below. Specifically, the terminology used in the embodiments of this application is only used to describe the purpose of a particular embodiment and is not intended to limit the embodiments of this application.

[0097] Figure 2 This description illustrates that in some embodiments, one or more User Equipments (UEs) 10 and a base station 20, such as a gNB, communicate in a communication network system 40 according to embodiments of this application. The communication network system 40 includes one or more UEs 10 and a base station 20. The one or more UEs 10 may include a memory 12, a transceiver 13, and a processor 11 coupled to the memory 12 and the transceiver 13. The base station 20 may include a memory 22, a transceiver 23, and a processor 21 coupled to the memory 22 and the transceiver 23. The processor 11 or 21 may be configured to implement the proposed functions, procedures, and / or methods described herein. A layer of a radio interface protocol may be implemented in the processor 11 or 21. The memory 12 or 22 is operatively coupled to the processor 11 or 21 and stores various information to operate the processor 11 or 21. The transceiver 13 or 23 is operatively coupled to the processor 11 or 21, and the transceiver 13 or 23 transmits and / or receives wireless signals.

[0098] Figure 3AA wireless communication method for Low Power Wake-up Signal (LP-WUS) is described, applied at a base station, according to an embodiment of this application. The LP-WUS wireless communication method applied at the base station includes an operation 202 of receiving or generating at least one subgroup-based LP-WUS, including at least one temporary subgroup identifier (ID), and an operation 204 of transmitting the at least one subgroup-based LP-WUS to at least one subgroup of User Equipments (UEs) 10, wherein the at least one subgroup includes a first subgroup and a second subgroup. Furthermore, a processor 21 is configured to execute the above-described LP-WUS wireless communication method applied at the base station. The processor 21 is also configured to execute the LP-WUS wireless communication method applied at the base station in some of the following embodiments.

[0099] Figure 3B A wireless communication method for LP-WUS, applied at the UE end, is described according to one embodiment of the present application. This wireless communication method for LP-WUS, applied at the UE end, includes operation 302, receiving at least one subgroup-based LP-WUS, including at least one temporary subgroup identifier (ID), for the UE 10 of at least one subgroup, wherein the at least one subgroup includes a first subgroup and a second subgroup; and operation 304, transmitting the at least one subgroup-based LP-WUS to the UE of the at least one subgroup, wherein the at least one subgroup includes a first subgroup and a second subgroup. Furthermore, a processor 11 is configured to execute the above-described wireless communication method for LP-WUS, applied at the UE end. The processor 11 is also configured to execute the wireless communication method for LP-WUS, applied at the UE end, in some of the following embodiments.

[0100] Specifically, in some examples, at least one subgroup-based LP-WUS is expected to have low power consumption as its primary feature and a simplified detection procedure at the Low Power Wake-up Receiver (LP-WUR) end to support a low-complexity architecture. To achieve at least one objective, some embodiments may focus on different subgroups of LP-WUS for UE 10 in idle / inactive and connected states. Furthermore, some embodiments propose various methods to reduce the power consumption of the LP-WUR during the detection and decoding of at least one subgroup-based LP-WUS.

[0101] Information for a UE via LP-WUS may include the UE ID, UE subgroup ID, and / or cell ID. However, including the UE ID, UE subgroup ID, or cell ID in the LP-WUS content incurs significant overhead and increases the complexity of decoding the LP-WUS in the UE's LP-WUR. To address this issue, some examples assume that the content of at least one subgroup-based LP-WUS may only include the UE subgroup ID. In other words, at least one subgroup-based LP-WUS is transmitted to at least one group of UEs 10, rather than a single UE, which can reduce the overhead associated with at least one subgroup-based LP-WUS. However, using similar subgroup procedures for UEs 10 in idle / inactive states and UEs 10 in connected states may increase the false trigger rate of MRs for UEs 10 in connected states. Therefore, some embodiments of this application use separate subgroup IDs and separate subgroup procedures for UEs 10 in idle / inactive states and UEs 10 in connected states.

[0102] In some embodiments, transmitting at least one subgroup-based LP-WUS to at least one subgroup of UE 10 further includes transmitting LP-WUS of a first subgroup, including a first subgroup ID, to the first subgroup of UE 10, wherein the first subgroup of UE 10 is in an idle / inactive state. In some embodiments, the wireless communication method for LP-WUS further includes using a first temporary subgroup ID in the first subgroup.

[0103] Specifically, in some examples, for UE 10 in the first subgroup (the UE subgroup in an idle / inactive state), it is assumed that at least one subgroup-based LP-WUS can reuse the subgroup procedure used for paging UE 10 in the idle / inactive state. In other words, at least one subgroup-based LP-WUS can be transmitted to UE 10 in the first subgroup based on an existing paging subgroup. The first temporary subgroup ID can be matched with the paging subgroup used for LP-WUS transmission. The overall procedure for reusing paging subgroups for LP-WUS transmission is as follows: Figure 4 The explanation is as follows.

[0104] Figure 4 This document describes an embodiment of the present application, illustrating the subgroup procedure and temporary subgroup ID allocation for an idle / inactive UE 10. Figure 4 Note that, in some examples, the detailed procedure for the LP-WUS subgroup of the idle / inactive UE 10 includes at least the following operations, as described below. These operations can be performed in parallel or sequentially, and the embodiments of this application are not limited thereto.

[0105] Operation 1: Base station 20 determines the total number of subgroups based on UE ID in the cell.

[0106] Operation 2: Base station 20 broadcasts the total number of subgroups based on UE ID in the cell in the system information, which is received by MR 10B of UE 10.

[0107] Operation 3: UE 10 determines its subgroup in the cell.

[0108] Operation 4: Base station 20 maps the first temporary LP-WUS subgroup ID to the paging subgroup ID.

[0109] Operation 5: Base station 20 broadcasts the first temporary LP-WUS subgroup ID of UE 10 in the idle / inactive state of the cell in the system information, which is received by MR 10B of UE 10.

[0110] Operation 6: UE 10 determines the first temporary LP-WUS subgroup ID.

[0111] Operation 7: When base station 20 receives a paging message from UE 10 with LP-WUS capability from the core network CN, or when it generates such a message, base station 20 determines the PO of UE 10 and the associated LP-WUS timing.

[0112] 8. Before UE 10 is paged in the paging time (PO), base station 20 transmits the relevant LP-WUS to wake up UE 10's MR 10B.

[0113] Note: The subgroup and temporary subgroup ID assignment procedure is completed when MR 10B of UE 10 is enabled. UE 10 includes UE receiver 10A, which includes MR 10B and LP-WUR 10C.

[0114] In some embodiments, the LP-WUS of the first subgroup is transmitted to the UE 10 of the first subgroup based on the paging subgroup, and the first temporary subgroup ID matches the paging subgroup. In some embodiments, the first temporary subgroup ID is based on a first code point, and the first code point is mapped to the paging subgroup ID.

[0115] Specifically, some examples propose assigning a first temporary subgroup ID to a UE's paging subgroup. This ID can be transmitted in at least one subgroup-based LP-WUS to notify the UE 10 of the first subgroup to trigger MR. In some examples, the first temporary subgroup ID can be based on the first code point mapped to the paging subgroup ID. The first temporary subgroup ID may refer to the first temporary LP-WUS subgroup ID. For example, if there are 8 paging subgroups, a method utilizing different code point combinations of N=3 bits (2^3=8 code points) can be applied to assign a unique first temporary LP-WUS subgroup ID to each paging subgroup. The mapping of the first temporary LP-WUS subgroup ID to the associated paging subgroup is illustrated in Table 1. The first temporary LP-WUS subgroup ID can be carried in the content of at least one subgroup-based LP-WUS. In some examples, the first temporary LP-WUS subgroup ID based on the first code point has advantages in terms of low overhead and multiple code point selection. For example, for N=4 bits, 2^4=16, the total number of code point combinations can be 16, which can be assigned to 16 different UE subgroups.

[0116] Table 1: Mapping the first temporary subgroup ID based on the first code point to the paging subgroup ID in the idle / inactive state.

[0117]

[0118] In some embodiments, transmitting at least one subgroup-based LP-WUS to at least one subgroup of UE 10 further includes transmitting LP-WUS of a second subgroup, including a second subgroup ID, to the second subgroup, wherein the UE 10 of the second subgroup is in a connected state. In some embodiments, the wireless communication method for LP-WUS further includes using a second temporary subgroup ID in the second subgroup.

[0119] Using a paging subgroup method and including the paging subgroup ID in the LP-WUS to trigger a UE 10 subgroup in the connected state may lead to a false trigger rate of the LP-WUS, resulting in higher power consumption for the UE 10. To address this issue, some examples in this application propose designing a new second subgroup LP-WUS subgroup and introducing a low-overhead second temporary subgroup ID for the UE 10 in the connected state subgroup. Detailed procedures for the LP-WUS of the second subgroup for the connected state UE 10 are described in [link to documentation]. Figure 5 The explanation is as follows.

[0120] Figure 5 This document describes an embodiment of the present application, which describes the subgroup procedure and temporary subgroup ID allocation for a connected UE 10. Figure 5In some examples, the detailed procedure for the LP-WUS subgroup of connected UE 10 includes at least the following operations, which are described below. These operations can be performed in parallel or sequentially, and the embodiments of this application are not limited thereto.

[0121] Operation 1: Base station 20 determines the total number of second LP-WUS subgroups in the cell and maps the second temporary subgroup ID to each second subgroup.

[0122] Operation 2: The base station broadcasts the total number of the second subgroup and the second temporary subgroup ID in the cell in the system information or through the cell public RRC message. This information is received by the MR of the UE in the cell.

[0123] Operation 3: The connected UE determines the ID of the second LP-WUS subgroup and the second temporary subgroup in the cell.

[0124] Operation 4: When base station 20 generates a PDCCH message for UE 10 with LP-WUS capability, the base station determines the PDCCH timing and the associated LP-WUS timing.

[0125] 5. Before the PDCCH is transmitted to UE 10, the base station 20 transmits the relevant LP-WUS to UE 10 in the second subgroup to wake up UE 10's MR.

[0126] In some embodiments, the LP-WUS of the second subgroup is transmitted to the UE of the second subgroup based on the second subgroup, and the second temporary subgroup ID matches the second subgroup. In some embodiments, the second temporary subgroup ID is based on a second code point, and the second code point is mapped to the UE of the second subgroup.

[0127] Specifically, some examples of embodiments in this application discuss a method for calculating the LP-WUS subgroup ID of a connected UE LP-WUS subgroup. The LP-WUS subgroup ID of a connected UE can be designed according to the following formula.

[0128] LP-WUS subgroup ID = (floor (UE_ID / (LPF*LP-WUS_O)) modNumsubgroupsForUEID) + (NumSubgroupsPerLP-WUS - NumSubgroupsForUEID), where: LPF: Total number of LP_WUS frames within a given time period.

[0129] LP-WUS_O: The number of LP-WUS times in an LP-WUS frame.

[0130] NumSubgroupsForUEID: The number of subgroups based on UE_ID in LP-WUS timing, which is broadcast in system information.

[0131] NumSubgroupsPerLP-WUS: The total number of subgroups based on UE_ID during the LP-WUS timeframe. This information is broadcast in the system information.

[0132] The UE belonging to the subgroup ID monitors its associated LP-WUS timing, which indicates the LP-WUS subgroup.

[0133] In some cases, a temporary LP-WUS subgroup ID is carried within the LP-WUS content to notify the UEs in the LP-WUS subgroup about LP-WUS triggering in connected states. In this approach, a temporary LP-WUS subgroup ID can be assigned using N distinct code points carried within the LP-WUS content. For example, consider LP-WUS subgroups for 8 UEs in connected states. The gNB can assign a unique temporary subgroup ID to an LP-WUS UE using only a combination of N=3 bits and 2^3=8 bits of code points, where each code point is associated with one subgroup of the UE, as shown in Table 2. This subgrouping approach is highly advantageous for multi-code-point selection due to the use of fewer bits transmitted in the LP-WUS.

[0134] Table 2: Second Temporary LP-WUS Subgroup ID of Connected UE Based on Second Code Point.

[0135]

[0136] In some embodiments, the information carried in at least one subgroup-based LP-WUS includes at least one temporary subgroup ID and at least one subgroup master radio (MR) wake-up indication field. In some embodiments, the at least one subgroup MR wake-up indication field includes information for waking up the MR of the UE in at least one subgroup. In some embodiments, when the information includes a first value, the UE in at least one subgroup wakes up the MR, and / or when the information includes a second value, the UE in at least one subgroup does not need to wake up the MR. In some embodiments, the information carried in at least one subgroup-based LP-WUS includes at least one temporary subgroup ID and at least one UE MR wake-up indication field. In some embodiments, the at least one UE wake-up indication field includes a bitmap for waking up the MR of the UE in at least one subgroup. In some embodiments, when the bitmap includes a first value, the UE in at least one subgroup wakes up the MR, and / or when the bitmap includes a second value, the UE in at least one subgroup does not need to wake up the MR.

[0137] Specifically, in some instances, it is assumed that the Low Power Wake-up Signal (LP-WUS) is transmitted to a user equipment (UE) subgroup. Once the LP-WUS and subgroup are configured, the Low Power Wake-up Receiver (LP-WUR) monitors the relevant LP-WUS timing. This embodiment proposes two methods for carrying and extracting the Main Radio (MR) trigger information from the LP-WUS.

[0138] Figure 6 An example of a low-power wake-up signal carrying information according to an embodiment of this application is shown, the information being used to wake up at least one subgroup of user equipment. In this method, the content of the low-power wake-up signal includes, for example: Figure 6 The diagram shows the subgroup ID and master radio wake-up indication field for the user equipment subgroup. The unit metadata in the master radio wake-up indication field is used to indicate the user equipment subgroup that needs to be woken up by the master radio. This method reduces the overhead of the low-power wake-up signal indication field. However, this may lead to an increased false trigger rate, as some user equipment may unnecessarily receive the wake-up indication.

[0139] Figure 7 An example of a low-power wake-up signal carrying information according to an embodiment of this application is shown, the information being used for primary radio wake-up of at least one subgroup of user equipment. This method suggests that the information carried in the low-power wake-up signal includes, for example... Figure 7 The subgroup ID and the master radio wake-up indication field for n user devices in the subgroup are shown.

[0140] In some instances, it is assumed that the UE's Master Radio Wake-up Indication field of the Low Power Wake-up signal contains K bits during a Low Power Wake-up signal timing, where K bits equal the number of UEs in the subgroup during the Low Power Wake-up signal timing configured by higher-layer parameters. The UE's Low Power Wake-up Receiver can extract the Master Radio Trigger Information from the Master Radio Wake-up Indication field, as described below.

[0141] For a given subgroup ID, the User Equipment (UE) can determine the value of the (i_UE bit = UE ID mod k) bit in the UE Master Radio Wake-up Indication field, where i_UE bit is the bit position in the Low Power Wake-up Signal (LPWS) and k is the total number of bits in the LWS. If the value of i_UE bit (i_UE ID mod k) is '1', the UE's LWS receiver needs to wake up the UE's Master Radio; otherwise, if the value of this bit is 0, the UE's LWS receiver does not need to wake up the Master Radio.

[0142] In some instances, physical resources and various physical parameters should be known to the user equipment before receiving a low-power wake-up signal. Since the low-power wake-up receiver is designed for simplicity, these parameters should be provided to the user equipment via the user equipment's main radio during initial access or when the user equipment's main radio is turned on.

[0143] Figure 8 A wireless communication method for a low-power wake-up signal applied at a base station according to an embodiment of this application is demonstrated. This low-power wake-up signal wireless communication method at the base station includes operation 802, transmitting at least one resource and / or parameter before transmitting the low-power wake-up signal to at least one user equipment 10 or at least one subgroup of user equipment 10 in a cell. Furthermore, a processor 21 is configured to execute the above-described low-power wake-up signal wireless communication method applied at the user equipment end. The processor 21 is also configured to execute the low-power wake-up signal wireless communication method applied at the user equipment end in some of the following embodiments.

[0144] Figure 9 A wireless communication method for a low-power wake-up signal applied to a user equipment terminal according to an embodiment of this application is demonstrated. The low-power wake-up signal wireless communication method at the base station terminal includes operation 902: receiving at least one subgroup-based low-power wake-up signal, including a temporary subgroup identifier (ID) of at least one user equipment 10, the at least one subgroup including a first subgroup and a second subgroup; and monitoring the timing of the at least one subgroup-based low-power wake-up signal. Furthermore, a processor 11 is configured to execute the above-described low-power wake-up signal wireless communication method applied to a user equipment terminal. The processor 11 is also configured to execute the low-power wake-up signal wireless communication method applied to a user equipment terminal in some of the following embodiments.

[0145] In some embodiments, at least one resource and / or parameter associated with the low-power wake-up signal includes at least one low-power wake-up signal timing, at least one low-power wake-up signal frame, at least one low-power wake-up signal frequency position, at least one low-power synchronization signal (LP-SS), and / or low-power wake-up signal information. In some embodiments, the low-power wake-up signal timing is a set of K consecutive monitoring timings in the time domain, wherein a low-power wake-up receiver is configured to perform a detection attempt to decode the low-power wake-up signal. In some embodiments, K is the total number of monitoring timings among the low-power wake-up signal timings configured by a higher layer. In some embodiments, K is the total number of monitoring timings among the low-power wake-up signal timings configured by a higher layer via SIB1. In some embodiments, the position of at least one low-power wake-up signal timing in the time domain is based on a reference point and an offset from the reference point to a first monitoring timing of the low-power wake-up signal.

[0146] In some embodiments, the reference point is a paging timing (PO) for waking the master radio, and the offset is a synchronization signal block (SSB) level offset between a target paging timing and a first monitoring timing of the low-power wake-up signal. In some embodiments, the reference point is a paging timing for waking the master radio, and the offset is a symbol / slot level offset located between the paging timing and the first monitoring timing of the low-power wake-up signal. In some embodiments, the reference point is a synchronization signal block, and the offset is a symbol / slot level offset located between the synchronization signal block and the first monitoring timing of the low-power wake-up signal. In some embodiments, the reference point is a low-power synchronization signal, and the offset is a symbol / slot level offset located between the low-power synchronization signal and the first monitoring timing of the low-power wake-up signal. In some embodiments, the reference point is a radio frame, and the offset is a symbol / slot level offset located between the start of the radio frame and the first monitoring timing of the low-power wake-up signal. In some embodiments, the radio frame is a frame associated with a low-power wake-up signal timing.

[0147] In some embodiments, at least one frequency resource of at least one low-power wake-up signal based on a user equipment or at least one low-power wake-up signal based on a subgroup of user equipments and / or at least one low-power synchronization signal is configured to at least one user equipment or at least one subgroup of user equipments via system information. In some embodiments, at least one frequency resource of at least one low-power wake-up signal based on a user equipment or at least one low-power wake-up signal based on a subgroup of user equipments is derived from at least one frequency resource of at least one low-power synchronization signal. In some embodiments, the low-power wake-up signal information is configured to at least one user equipment or user equipment of a first subgroup in an idle / inactive state via system information.

[0148] In some embodiments, the low-power wake-up signal information is configured to at least one user equipment or user equipment in a connected second subgroup, via system information or via Radio Resource Control (RRC) signaling. In some embodiments, the low-power wake-up signal information includes a frequency location and / or the magnitude of the low-power wake-up signal, the number of low-power wake-up signal frames, at least one low-power wake-up signal timing for each low-power wake-up signal frame, a reference point, an offset, the total number of symbols for each low-power wake-up signal, the number of subgroups for each low-power wake-up signal, the number of paging opportunities related to the number of low-power wake-up signal timings for user equipment in the first subgroup, and / or the number of physical downlink control channels (PDCCHs) related to the number of low-power wake-up signal timings for user equipment in the second subgroup.

[0149] Figure 10An example of a low-power wake-up signal timing with K monitoring opportunities according to an embodiment of this application is shown. The low-power wake-up signal timing is a set of K consecutive monitoring opportunities in the time domain, wherein the low-power wake-up receiver performs a detection attempt to decode the low-power wake-up signal, such as... Figure 10 As shown, K is the total number of monitoring opportunities for the low-power wake-up signal configured by higher layers such as SIB1. Furthermore, during the low-power wake-up signal opportunities, the low-power synchronization signal is not configured to avoid time-domain conflicts between the low-power synchronization signal and the low-power wake-up signal.

[0150] Location of Low-Power Wake-Up Signal Timing: The user equipment's low-power wake-up receiver needs to know the timing of the low-power wake-up signal in the time domain. This allows the user equipment sufficient time to trigger the main radio and synchronize with the network when the low-power wake-up signal is triggered. To determine the low-power wake-up signal timing, this embodiment considers the following two points.

[0151] Reference point: The location of the low-power wake-up signal timing can be determined using a known, predetermined reference point. This reference point serves as the starting point for calculating the low-power wake-up signal timing.

[0152] Offset from the reference point: In addition to the reference point, an offset value in units of time slots / symbols is applied to calculate the exact time of the first monitoring opportunity for the low-power wake-up signal. By adding the offset to the reference point, the user equipment can accurately determine when the low-power wake-up signal occurs.

[0153] Figure 11 This document illustrates an example of a low-power wake-up signal timing position based on a target paging timing as a reference point and a synchronization signal block-level offset between the target paging timing and the low-power wake-up signal, applicable to idle / inactive user equipment. Based on the reference point and the offset from the reference point, embodiments of this application propose the following alternative options for determining the low-power wake-up signal timing.

[0154] Option 1: For upcoming / target paging of idle / inactive user devices.

[0155] For idle / inactive user equipment, the low-power wake-up signal is used to trigger the master radio to wake up an upcoming paging opportunity. Therefore, the target paging opportunity triggered by the low-power wake-up signal to wake up the master radio can be considered a reference point. To identify the location of the low-power wake-up signal opportunity, a synchronization signal block-level offset from the reference point to the first monitoring opportunity of the low-power wake-up signal is used, such as... Figure 11As shown. For example, if the low-power wake-up signal timing is one synchronization block earlier than the target, it is considered an offset between the low-power wake-up signal timing and the target paging timing. By using the target paging timing as a reference point and determining the appropriate offset, the user equipment's low-power wake-up receiver can accurately locate the low-power wake-up signal timing.

[0156] Figure 12 This document illustrates an example of a low-power wake-up signal (LWPS) timing location based on an embodiment of this application, using the target paging timing as a reference point and the symbol / timeslot level offset between the target paging timing and the LWPS signal, applicable to idle / inactive user equipment. Similarly, for user equipment in an idle / inactive state, the upcoming target paging timing is considered as the reference point, and the LWPS timing location is identified using the symbol / timeslot level offset from the first physical downlink control channel monitoring timing of the target paging timing (reference point) to the first monitoring timing of the LWPS signal, as shown below. Figure 12 As shown.

[0157] Figure 13 This document illustrates an example of a low-power wake-up signal timing position according to an embodiment of this application, using a synchronization signal block as a reference point and a symbol / slot-level offset between the synchronization signal block and the low-power wake-up signal. In some embodiments, the synchronization signal block can be considered as the reference point, and the symbol / slot-level offset is located between the synchronization signal block and a first monitoring timing of the low-power wake-up signal, which can be used to identify the low-power wake-up signal timing position, such as... Figure 13 As shown.

[0158] Figure 14 This document illustrates an example of a low-power wake-up signal (LWPS) timing position based on an embodiment of this application, using a low-power synchronization signal as a reference point and a symbol / slot-level offset between the LWPS and the first monitoring timing of the LWPS signal. This is applicable to user equipment in idle / inactive and connected states. In this embodiment, the LWPS position can be determined based on the periodic LWPS signal transmitted over the network to synchronize the user equipment's LWPS receiver. The reference point can be considered as the first symbol of the LWPS signal, and the symbol / slot-level offset from the first symbol of the LWPS signal to the first monitoring timing of the LWPS signal is as follows: Figure 14 As shown.

[0159] Figure 15This document illustrates an example of a low-power wake-up signal (LPW) timing position according to an embodiment of this application, using the LW signal as a reference point and a symbol / slot level offset between the start of the LW signal frame and the first monitoring timing of the LW signal. This is applicable to user equipment in idle / inactive and connected states. In some embodiments, a single LW signal frame may be introduced to transmit the LW signal timing. In this embodiment, the start symbol of the LW signal frame is considered the reference point, and the symbol / slot level offset is located between the reference point and the first monitoring timing of the LW signal timing to determine the LW signal timing position, such as... Figure 15 As shown.

[0160] Some embodiments of this application propose that a low-power wake-up signal can be transmitted within a low-power wake-up signal frame, wherein the low-power wake-up signal is a radio frame that may contain one or more low-power wake-up signal moments or the start point of a low-power wake-up signal moment. The maximum number of low-power wake-up signal moments in a low-power wake-up signal frame can be in the range of {1, 2, or 4} low-power wake-up signal moments.

[0161] Knowing the frequency resources of the low-power wake-up signal transmitted to the user equipment's low-power wake-up receiver is important for allowing the user equipment's low-power wake-up receiver to perform blind detection within specific frequency resources instead of searching the entire system bandwidth. This reduces the power consumption of the low-power wake-up receiver and the complexity of blind detection. To achieve this, embodiments of this application propose configuring the frequency resources of the low-power wake-up signal and the low-power synchronization signal to the user equipment during the initial access process in two ways.

[0162] During the initial access process, when a User Equipment (UE) indicates whether it supports Low Power Wake-up Signal (LP-WUS) by including its information in the random access preamble message, the base station can configure / indicate frequency resources for the UE in System Information Block 1 (SIB1) or System Information Block X (SIB_X) to transmit LP-WUS. In this way, the frequency resources for configuring LP-WUS can be limited, so the UE's Low Power Wake-up Receiver (LP-WUR) does not need to perform blind detection in a higher bandwidth, thereby saving power.

[0163] Figure 16An example of implicitly derived LP-WUS frequency resources from Low Power Synchronization Signal (LP-SS) frequency resources according to an embodiment of this application is shown. In some embodiments, during initial access, when the UE searches for a cell to camp on and synchronizes with the base station, the UE's LP-WUR can also use the periodic LP-SS transmitted by the base station. When the UE's LP-WUR is time-frequency synchronized with the base station, frequency resources that the base station can transmit LP-WUS can be implicitly derived. An example of this method is shown in Figure 16 In this embodiment, it is assumed that LP-SS and LP-WUS will be transmitted in the same frequency resources.

[0164] In some examples, the UE can provide the following parameters to a connected UE via SIB1 or SIBx, or via cell public radio resource control (RRC) signaling, to detect LP-WUS in both idle / inactive and connected states. The UE can obtain at least one of the following parameters: 1. The frequency location and magnitude of the LP-WUS for monitoring LP-WUS; 2. The number of LP-WUS frames and their associated LP-WUS opportunities within those frames; 3. The reference point and its offset; 4. The total number of LP-WUS symbols; 5. The number of subgroups per LP-WUS; 6. The number of paging opportunities associated with the number of LP-WUS opportunities in the idle / inactive state, and the number of physical downlink control channels (PDCCHs) associated with the number of LP-WUS opportunities in the connected state. Note: If any of the above parameters change, the gNB needs to indicate this to the UE via system information updates.

[0165] In summary, in some embodiments, the primary objective of this invention is to disclose low-overhead content of LP-WUS by reducing its bearer information, thereby enabling the UE to learn multiple physical layer parameters before receiving LP-WUS. This, in turn, reduces the complexity and power consumption of LP-WUS detection for the UE's LP-WUS. The methods and parameters disclosed to achieve our objective are summarized as follows: 1. A separate subgroup method is disclosed for UEs in idle / inactive and connected states, suggesting that LP-WUS can be transmitted to a subgroup of UEs rather than a single UE. 2. Temporary subgroup IDs are defined and used to reduce LP-WUS overhead. 3. A method is disclosed for how the LP-WUS extracts MR trigger information from LP-WUS. 4. The timing of LP-WUS and its position in the time domain are disclosed. 5. A method is provided to inform the UE about the time / frequency resources and other parameters of LP-WUS before detection. In some embodiments, the advantages of this invention can be summarized as follows: 1. Reduced overhead: By implementing a separate subgroup method for UEs in idle / inactive and connected states, LP-WUS can be transmitted to a subgroup of UEs rather than a single UE. This method helps minimize the overhead associated with LP-WUS. 2. Temporary Subgroup IDs: Using temporary subgroup IDs in idle / inactive and connected states helps reduce LP-WUS overhead. These IDs facilitate efficient subgrouping by the UE. 3. Enhanced LP-WUR Functionality: This invention discloses a simplified LP-WUR method to extract MR triggering information from LP-WUS. This improves the functionality and performance of LP-WUS. 4. Precise LP-WUS Timing: The disclosure provides information about LP-WUS timing and its specific location in the time domain. This precise knowledge allows for accurate detection and reduces blind detection in LP-WUS decoding. 5. Prior Knowledge of Parameters: This invention introduces a method to inform the UE about the time / frequency resources and other parameters of LP-WUS before detection. This prior knowledge enables the UE to efficiently process and decode LP-WUS, reducing detection complexity.

[0166] Figure 17 This is a block diagram of a wireless communication system 700 according to an embodiment of this application. The embodiments described herein can be implemented in the system using any suitably configured hardware and / or software. Figure 17The system 700 is shown, including frequency modulation (RF) circuitry 710, baseband circuitry 720, application circuitry 730, memory / storage 740, display 750, camera 760, sensor 770, and input / output (I / O) interface 780, all coupled to each other as shown in the figure. The application circuitry 730 may include circuitry, such as, but not limited to, one or more single-core or multi-core processors. The processor may include any combination of general-purpose and special-purpose processors, such as a graphics processor, application processor, or digital signal processor. The processor may be coupled to the memory / storage and configured to execute instructions stored in the memory / storage to enable various applications and / or operating systems running on the system.

[0167] While embodiments of this application have been described in what are considered the most practical and preferred embodiments, it should be understood that embodiments of this application are not limited to the disclosed embodiments, but are intended to cover various arrangements made without departing from the broadest interpretation of the appended claims.

Claims

1. A low-power wake-up signal LP-WUS wireless communication method applied to a base station, characterized in that, include: Receive or generate at least one subgroup-based LP-WUS, which includes at least one temporary subgroup identifier ID; as well as The at least one subgroup-based LP-WUS is transmitted to at least one subgroup of user equipment (UE).

2. The LP-WUS wireless communication method according to claim 1, characterized in that, The transmission of the at least one subgroup-based LP-WUS to the UE of the at least one subgroup further includes: The first subgroup-based LP-WUS is transmitted to the UE of the first subgroup, the first subgroup-based LP-WUS including a first temporary subgroup identifier ID, wherein the UE of the first subgroup is in an idle / inactive state.

3. The LP-WUS wireless communication method according to claim 2, characterized in that, This further includes using the first temporary subgroup ID in the first subgroup.

4. The LP-WUS wireless communication method according to claim 3, characterized in that, The first subgroup-based LP-WUS is transmitted to the UE of the first subgroup based on the paging subgroup, and the first temporary subgroup ID matches the paging subgroup.

5. The LP-WUS wireless communication method according to claim 4, characterized in that, The first temporary subgroup ID is based on the first code point, and the first code point is mapped to the paging subgroup ID.

6. The LP-WUS wireless communication method according to claim 1, characterized in that, The transmission of the at least one subgroup-based LP-WUS to the UE of the at least one subgroup further includes: The second subgroup-based LP-WUS is transmitted to the UE of the second subgroup, the second subgroup-based LP-WUS including a first temporary subgroup identifier ID, wherein the UE of the second subgroup is in a connected state.

7. The LP-WUS wireless communication method according to claim 6, characterized in that, This further includes using a second temporary subgroup ID in the second subgroup.

8. The LP-WUS wireless communication method according to claim 6, characterized in that, The second subgroup-based LP-WUS is transmitted to the UE of the second subgroup based on the second subgroup, and the second temporary subgroup ID matches the second subgroup.

9. The LP-WUS wireless communication method according to claim 6, characterized in that, The second temporary subgroup ID is based on the second code point, and the second code point is mapped to the UE of the second subgroup.

10. The LP-WUS wireless communication method according to any one of claims 1 to 9, characterized in that, The information carried in the at least one subgroup-based LP-WUS includes at least one temporary subgroup ID and at least one subgroup master radio MR wake-up indication field.

11. The LP-WUS wireless communication method according to claim 10, characterized in that, The at least one subgroup MR wake-up indication field includes information about the MR of the UE in the at least one subgroup.

12. The LP-WUS wireless communication method according to claim 11, characterized in that, When the information includes a first value, the UE of the at least one subgroup wakes up the MR, and / or when the information includes a second value, the UE of the at least one subgroup does not need to wake up the MR.

13. The LP-WUS wireless communication method according to any one of claims 1 to 9, characterized in that, The information carried in the at least one subgroup-based LP-WUS includes at least one temporary subgroup ID and at least one UE MR wake-up indication field.

14. The LP-WUS wireless communication method according to claim 13, characterized in that, The at least one UE wake-up indication field includes a bitmap of the MR used to wake up the UE in the at least one subgroup.

15. The LP-WUS wireless communication method according to claim 14, characterized in that, When the bitmap includes a first value, the UE of the at least one subgroup wakes up the MR, and / or when the bitmap includes a second value, the UE of the at least one subgroup does not need to wake up the MR.

16. A low-power wake-up signal LP-WUS wireless communication method applied to a base station, characterized in that, include: Before transmitting LP-WUS to at least one UE or at least one subgroup of UEs in the cell, at least one resource and / or parameter associated with the LP-WUS is transmitted.

17. The LP-WUS wireless communication method according to claim 16, characterized in that, The at least one resource and / or parameter associated with the LP-WUS includes at least one LP-WUS timing, at least one LP-WUS frame, at least one LP-WUS frequency position, at least one low-power synchronization signal LP-SS, and / or LP-WUS information.

18. The LP-WUS wireless communication method according to claim 17, characterized in that, The LP-WUS timing is a set of K consecutive monitoring timings in the time domain, during which the low-power wake-up receiver LP-WUR is configured to perform a detection attempt to decode the LP-WUS.

19. The LP-WUS wireless communication method according to claim 18, characterized in that, K is the total number of monitoring times in the LP-WUS timings configured at higher levels.

20. The LP-WUS wireless communication method according to claim 19, characterized in that, K is the total number of monitoring opportunities in the LP-WUS timings configured by the higher layer through system information block 1SIB1.

21. The LP-WUS wireless communication method according to claim 18, characterized in that, The position of each LP-WUS timing point in the time domain is based on a reference point and an offset from the reference point to the first monitoring timing point of the LP-WUS.

22. The LP-WUS wireless communication method according to claim 21, characterized in that, The reference point is the paging timing PO used to wake up the MR, and the offset is the synchronization signal block SSB level offset between the target PO and the first monitoring timing of the LP-WUS.

23. The LP-WUS wireless communication method according to claim 21, characterized in that, The reference point is the point of origin (PO) used to wake up the MR, and the offset is the symbol / slot-level offset between the PO and the first monitoring opportunity of the LP-WUS.

24. The LP-WUS wireless communication method according to claim 21, characterized in that, The reference point is the SSB, and the offset is the symbol / slot-level offset between the SSB and the first monitoring opportunity of the LP-WUS.

25. The LP-WUS wireless communication method according to claim 21, characterized in that, The reference point is LP-SS, and the offset is the symbol / slot-level offset between LP-SS and the first monitoring moment of LP-WUS.

26. The LP-WUS wireless communication method according to claim 21, characterized in that, The reference point is a radio frame, and the offset is a symbol / slot-level offset between the start of the radio frame and the first monitoring moment of the LP-WUS.

27. The LP-WUS wireless communication method according to claim 26, characterized in that, The radio frame is a frame related to LP-WUS timing.

28. The LP-WUS wireless communication method according to any one of claims 17 to 26, characterized in that, At least one frequency resource based on at least one UE's LP-WUS or at least one subgroup of UEs' LP-WUS, and / or the at least one LP-SS is configured to the at least one UE or the at least one subgroup of UEs via system information.

29. The LP-WUS wireless communication method according to any one of claims 17 to 27, characterized in that, At least one frequency resource of LP-WUS based on at least one UE or LP-WUS based on at least one subgroup of UEs is derived from at least one frequency resource of the at least one LP-SS.

30. The LP-WUS wireless communication method according to any one of claims 17 to 29, characterized in that, The LP-WUS information is configured via system information to at least one UE or the UE of the first subgroup in an idle / inactive state.

31. The LP-WUS wireless communication method according to any one of claims 17 to 30, characterized in that, The LP-WUS information is configured to the at least one UE or the UE of the second subgroup that is in a connected state via system information or via Radio Resource Control (RRC) signaling.

32. The LP-WUS wireless communication method according to any one of claims 17 to 31, characterized in that, The LP-WUS information includes the frequency location and / or size of the LP-WUS, the number of LP-WUS frames, at least one LP-WUS timing for each LP-WUS frame, a reference point, an offset, the total number of symbols for each LP-WUS, the number of subgroups for each LP-WUS, the number of paging timings related to the number of LP-WUS timings for UEs in the first subgroup, and / or the number of physical downlink control channels (PDCCHs) related to the number of LP-WUS timings for UEs in the second subgroup.

33. A wireless communication method for a low-power wake-up signal (LP-WUS) applied to a user equipment (UE) terminal, characterized in that, include: Receive at least one subgroup-based LP-WUS, including at least one temporary subgroup identifier ID for the UE of at least one subgroup; as well as Monitor at least one subgroup-based LP-WUS timing.

34. The LP-WUS wireless communication method according to claim 33, characterized in that, Receiving at least one subgroup-based LP-WUS for at least one subgroup of UE further includes: Receive a first subgroup-based LP-WUS, the first subgroup-based LP-WUS including a first temporary subgroup identifier ID, wherein the UE of the first subgroup is in an idle / inactive state.

35. The LP-WUS wireless communication method according to claim 34, characterized in that, This further includes using the first temporary subgroup ID in the first subgroup.

36. The LP-WUS wireless communication method according to claim 35, characterized in that, The first subgroup-based LP-WUS is received for the UE of the first subgroup based on the paging subgroup, and the first temporary subgroup ID matches the paging subgroup.

37. The LP-WUS wireless communication method according to claim 36, characterized in that, The first temporary subgroup ID is based on the first code point, and the first code point maps to the paging subgroup ID.

38. The LP-WUS wireless communication method according to claim 33, characterized in that, Receiving at least one subgroup-based LP-WUS for at least one subgroup of UE further includes: Receive a second subgroup-based LP-WUS, the second subgroup-based LP-WUS including a first temporary subgroup identifier ID, wherein the UE of the second subgroup is in a connected state.

39. The LP-WUS wireless communication method according to claim 38, characterized in that, This further includes using a second temporary subgroup ID in the second subgroup.

40. The LP-WUS wireless communication method according to claim 38, characterized in that, The second subgroup-based LP-WUS is received for the UE of the second subgroup, and the second temporary subgroup ID matches the second subgroup.

41. The LP-WUS wireless communication method according to claim 38, characterized in that, The second temporary subgroup ID is based on the second code point, and the second code point is mapped to the UE of the second subgroup.

42. The LP-WUS wireless communication method according to any one of claims 33 to 41, characterized in that, The information carried in at least one subgroup-based LP-WUS includes at least one temporary subgroup ID and at least one subgroup master radio MR wake-up indication field.

43. The LP-WUS wireless communication method according to claim 42, characterized in that, At least one subgroup MR wake-up indication field includes information about the MR that wakes up the UE in the at least one subgroup.

44. The LP-WUS wireless communication method according to claim 43, characterized in that, When the information includes a first value, the UE of at least one subgroup wakes up the MR, and / or when the information includes a second value, the UE of at least one subgroup does not need to wake up the MR.

45. The LP-WUS wireless communication method according to any one of claims 33 to 41, characterized in that, The information carried in at least one subgroup-based LP-WUS includes at least one temporary subgroup ID and at least one UE MR wake-up indication field.

46. ​​The LP-WUS wireless communication method according to claim 45, characterized in that, The at least one UE wake-up indication field includes a bitmap for waking up the MR of the UE in the at least one subgroup.

47. The LP-WUS wireless communication method according to claim 46, characterized in that, When the bitmap includes a first value, at least one subgroup of UEs wakes up the MR, and / or when the bitmap includes a second value, at least one subgroup of UEs does not need to wake up the MR.

48. A wireless communication method for a low-power wake-up signal (LP-WUS) applied to a user equipment (UE) terminal, characterized in that, include: Before receiving LP-WUS for at least one UE or at least one subgroup of UEs in at least one cell, at least one resource and / or parameter associated with the LP-WUS is received.

49. The LP-WUS wireless communication method according to claim 48, characterized in that, At least one resource and / or parameter associated with the LP-WUS includes at least one LP-WUS timing, at least one LP-WUS frame, at least one LP-WUS frequency position, at least one low-power synchronization signal LP-SS, and / or LP-WUS information.

50. The LP-WUS wireless communication method according to claim 49, characterized in that, An LP-WUS timing is a set of K consecutive monitoring timings in the time domain, during which a low-power wake-up receiver (LP-WUR) is configured to perform a detection attempt to decode the LP-WUS.

51. The LP-WUS wireless communication method according to claim 50, characterized in that, K is the total number of monitoring times in the LP-WUS timings configured at higher levels.

52. The LP-WUS wireless communication method according to claim 51, characterized in that, K is the total number of monitoring opportunities in the LP-WUS timings configured by the higher layer via SIB1.

53. The LP-WUS wireless communication method according to claim 50, characterized in that, The position of each LP-WUS timing point in the time domain is based on a reference point and an offset from the reference point to the first monitoring timing point of the LP-WUS.

54. The LP-WUS wireless communication method according to claim 53, characterized in that, The reference point is the paging timing PO used to wake up the MR, and the offset is the synchronization signal block SSB level offset between the target PO and the first monitoring timing of the LP-WUS.

55. The LP-WUS wireless communication method according to claim 53, characterized in that, The reference point is the point of origin (PO) used to wake up the MR, and the offset is the symbol / slot-level offset between the PO and the first monitoring opportunity of the LP-WUS.

56. The LP-WUS wireless communication method according to claim 53, characterized in that, The reference point is the SSB, and the offset is the symbol / slot-level offset between the SSB and the first monitoring opportunity of the LP-WUS.

57. The LP-WUS wireless communication method according to claim 53, characterized in that, The reference point is LP-SS, and the offset is the symbol / slot-level offset between LP-SS and the first monitoring moment of LP-WUS.

58. The LP-WUS wireless communication method according to claim 53, characterized in that, The reference point is a radio frame, and the offset is a symbol / slot-level offset between the start of the radio frame and the first monitoring moment of the LP-WUS.

59. The LP-WUS wireless communication method according to claim 58, characterized in that, The radio frame is a frame related to LP-WUS timing.

60. The LP-WUS wireless communication method according to any one of claims 49 to 59, characterized in that, At least one frequency resource based on at least one UE's LP-WUS or at least one subgroup of UEs' LP-WUS, and / or the at least one LP-SS is configured to the at least one UE or the at least one subgroup of UEs via system information.

61. The LP-WUS wireless communication method according to any one of claims 49 to 60, characterized in that, At least one frequency resource of LP-WUS based on at least one UE or LP-WUS based on at least one subgroup of UEs is derived from at least one frequency resource of the at least one LP-SS.

62. The LP-WUS wireless communication method according to any one of claims 49 to 61, characterized in that, The LP-WUS information is configured via system information to at least one UE or the UE of the first subgroup in an idle / inactive state.

63. The LP-WUS wireless communication method according to any one of claims 49 to 62, characterized in that, The LP-WUS information is configured to the at least one UE or the UE of the second subgroup that is in a connected state via system information or via Radio Resource Control (RRC) signaling.

64. The LP-WUS wireless communication method according to any one of claims 49 to 63, characterized in that, The LP-WUS information includes the frequency location and / or size of the LP-WUS, the number of LP-WUS frames, at least one LP-WUS timing for each LP-WUS frame, a reference point, an offset, the total number of symbols for each LP-WUS, the number of subgroups for each LP-WUS, the number of paging timings related to the number of LP-WUS timings for UEs in the first subgroup, and / or the number of physical downlink control channels (PDCCHs) related to the number of LP-WUS timings for UEs in the second subgroup.

65. A base station, characterized in that, include: Memory; transceiver; as well as A processor coupled to the memory and the transceiver; The base station is configured to perform the method of any one of claims 1 to 32.

66. A user equipment (UE), characterized in that, include: Memory; transceiver; as well as A processor coupled to the memory and the transceiver; The UE is configured to perform the method of any one of claims 33 to 64.

Images