Method, device and computer program product for wireless communication
LP-WUS in 5G communication selectively wakes up specific UE subgroups to monitor control channels, addressing inefficiencies in power consumption and false wake-ups, thereby enhancing power savings.
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2024-09-27
- Publication Date
- 2026-04-02
AI Technical Summary
The design and application of Low-Power Wake-Up Signals (LP-WUS) in 5G communication for User Equipment (UE) power saving is still a topic of discussion, leading to inefficiencies in power consumption and potential false wake-ups of UEs during paging occasions.
The implementation of LP-WUS that indicates specific subgroups of UEs to wake up and monitor control channels, using subgroup states, indexes, and offsets to optimize power usage by reducing unnecessary monitoring.
This approach enhances power savings by selectively waking up only necessary UEs, reducing false wake-ups and optimizing power consumption during idle/inactive modes in 5G communication.
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Figure CN2024121975_02042026_PF_FP_ABST
Abstract
Description
METHOD, DEVICE AND COMPUTER PROGRAM PRODUCT FOR WIRELESS COMMUNICATION
[0001] This document is directed generally to wireless communications, and in particular to 5th generation (5G) communications or 6th generation (6G) communications.
[0002] In 5G communication, the Low-Power Wake-Up Signal (LP-WUS) is used for the User Equipment (UE) power saving. However, the application or design of the LP-WUS is still a topic to be discussed.
[0003] This document relates to methods, systems, and computer program products for a wireless communication.
[0004] One aspect of the present disclosure relates to a wireless communication method. In an embodiment, the wireless communication method includes: receiving, by a wireless communication terminal from a wireless communication node, a low power wake-up signal, LP-WUS; and performing, by the wireless communication terminal, a behavior based on the LP-WUS, wherein the behavior comprises waking up, monitoring a control channel and / or starting a timer.
[0005] Another aspect of the present disclosure relates to a wireless communication method. In an embodiment, the wireless communication method includes: transmitting, by a wireless communication node to a wireless communication terminal, a low power wake-up signal, LP-WUS, to trigger the wireless communication terminal performing a behavior, wherein the behavior comprises waking up, monitoring a control channel and / or starting a timer.
[0006] Another aspect of the present disclosure relates to a wireless communication terminal. In an embodiment, the wireless communication terminal includes a communication unit and a processor. The processor is configured for: receiving, via the communication unit from a wireless communication node, a low power wake-up signal, LP-WUS; and performing a behavior based on the LP-WUS, wherein the behavior comprises waking up, monitoring a control channel and / or starting a timer.
[0007] Another aspect of the present disclosure relates to a wireless communication node. In an embodiment, the wireless communication node includes a communication unit and a processor. The processor is configured for: transmitting, via the communication unit to a wireless communication terminal, a low power wake-up signal, LP-WUS, to trigger the wireless communication terminal performing a behavior, wherein the behavior comprises waking up, monitoring a control channel and / or starting a timer.
[0008] Various embodiments may preferably implement the following features:
[0009] Preferably, the LP-WUS indicates one or more subgroups, and the LP-WUS comprises at least one of:
[0010] a subgroup state corresponding to the one or more subgroups or corresponding to indexes for the one or more subgroups;
[0011] a predetermined value; or
[0012] an offset.
[0013] Preferably, the LP-WUS indicates one or more subgroups via an indication state and the indication state is determined based on at least one of:
[0014] a maximum number of subgroups per paging occasion, PO;
[0015] a number of the one or more subgroups;
[0016] a predetermined value;
[0017] indexes for the one or more subgroups;
[0018] an offset; or
[0019] a subgroup state.
[0020] Preferably, the predetermined value and / or offset is determined based on at least one of:
[0021] a number of subgroups of the one or more subgroups;
[0022] a maximum number of subgroups per paging occasion, PO;
[0023] a number of POs; or
[0024] indexes for the one or more subgroups.
[0025] Preferably, the predetermined value comprises at least one of:
[0026] X-1 bits set as a first value and one bit set as a second value, wherein X is a positive integer;
[0027] one bit set as a second value, or
[0028] a first value or a second value.
[0029] Preferably, the subgroup state is determined based on at least one of:
[0030] a maximum number of subgroups per paging occasion, PO;
[0031] a number of the one or more subgroups;
[0032] a predetermined value;
[0033] indexes for the one or more subgroups; or
[0034] an offset.
[0035] Preferably, the LP-WUS satisfies at least one of:
[0036] in response to one subgroup state or indication state corresponding to multiple subgroup indexes, the multiple subgroup indexes are continuous;
[0037] in response to one subgroup state or indication state corresponding to multiple subgroup indexes, the multiple subgroup indexes are distributed with a gap; or
[0038] in response to one subgroup state or indication state corresponding to multiple subgroup indexes, the multiple subgroup indexes are discontinuous;
[0039] a maximum number of subgroups per paging occasion and / or a number of POs is configured or indicated by the wireless communication node;
[0040] a value range of the subgroup state or indication state corresponds to at least one of the number of the one or more subgroups or the indexes for the one or more subgroups;
[0041] a number of the one or more subgroups indicated by the LP-WUS is 2^m, wherein m is an integer no less than 0;
[0042] a number of the one or more subgroups indicated by the LP-WUS comprises at least one of {1, 2, 4, 8, 16, 32, 64, 128, 256} and the number is not larger than the maximum number of subgroups for one or more POs; or
[0043] the indication state or LP-WUS is no less than 5 bits and no larger than 16 bits.
[0044] Preferably, the LP-WUS indicates one or more subgroups, and at least one of the following is satisfied:
[0045] a maximum number of subgroups per paging occasion are divided into K groups, wherein K is a positive integer;
[0046] a number of subgroups based on one or more POs are divided into K groups, wherein K is a positive integer;
[0047] a first group among K groups contains a first number of subgroups, and the other groups among K groups contains a second number of subgroups, wherein K is a positive integer;
[0048] the LP-WUS indicates one, two, or all of subgroups in one group among K groups; or
[0049] the LP-WUS indicates one, two, or all of subgroups in one or more groups among K groups.
[0050] Preferably, the LP-WUS is received based on a LP-WUS occasion, LO, and the LO is associated to one or more POs.
[0051] Preferably, the LP-WUS comprises an indication state determined by at least one of:
[0052] a maximum number of subgroups per paging occasion, PO;
[0053] a number of one or more subgroups;
[0054] a predetermined value;
[0055] indexes for one or more subgroups;
[0056] an offset;
[0057] a number of the one or more POs; or
[0058] indexes for the one or more POs.
[0059] Preferably, a number of the one or more POs is configured by System Information Block 1, SIB1, other System Information, OSI, or by the wireless communication node.
[0060] Preferably, the LO is associated with M POs and wherein:
[0061] the LO is associated with a first PO and next M-1 POs, wherein the LO is before the first PO with an offset.
[0062] Preferably, the behavior is performed based on one or more offsets, or the LP-WUS is received based on one or more offsets.
[0063] Preferably, the offset is defined between a LO and a physical downlink control channel, PDCCH, occasion;
[0064] the offset is defined between a starting or ending of a LO and a physical downlink control channel, PDCCH, occasion;
[0065] the offset is defined between a monitoring occasion, MO, of a LO and PDCCH occasion;
[0066] the offset is defined between a first or last monitoring occasion, MO, of a LO and a PDCCH occasion;
[0067] the offset is defined between a LO and an associated PDCCH occasion;
[0068] the offset is defined between an MO of a LO and an associated PDCCH occasion;
[0069] the offset is defined between an LO and a start of a timer; or
[0070] the offset is defined between an MO of a LO and a start of a timer.
[0071] Preferably, PDCCH occasion comprises a PDCCH occasion for monitoring a paging control channel; or
[0072] PDCCH occasion comprises a PDCCH occasion for monitoring a control channel provided by a user equipment specific search space, USS, set or a type-3 Common Search Space, CSS, set.
[0073] Preferably, the one or more offsets are associated to a same periodicity;
[0074] the one or more offsets are configured based on one or more LP-WUS monitoring space configurations;
[0075] the one or more offsets are associated with one or more LP-WUS monitoring space configurations; and / or
[0076] the one or more offsets are configured in one information element or via SIB1.
[0077] Preferably, a monitoring space configuration is a set of configurations, comprising at least one of: an offset, a periodicity, a repetition number, information of time domain resources for the LP-WUS, or information of frequency domain resources for the LP-WUS, a Transmission Configuration Indication, TCI, TCI state or Quasi Co-Location, QCL, information;
[0078] a monitoring space configuration is configured via an information element; and / or a monitoring space configuration comprises one or more parameter configurations.
[0079] Preferably, the wireless communication terminal receives the LP-WUS based on a minimum offset among the one or more offsets which are larger than a wake-up delay of the wireless communication terminal; or
[0080] the wireless communication terminal receives the LP-WUS based on one or more offsets among the one or more offsets which are larger than a wake-up delay of the wireless communication terminal.
[0081] Preferably, a preamble is preceded the LP-WUS, a repeated LP-WUS, or a LO for monitoring the LP-WUS.
[0082] Preferably, at least one of the following is satisfied:
[0083] the preamble preceding the LP-WUS or a repeated LP-WUS or the LO is determined by system information block, SIB, signalling;
[0084] the preamble comprises binary sequences, and the binary sequences of the preamble are identical to binary sequences of a low power synchronization signal, LP-SS;
[0085] the preamble comprises binary sequences, and the binary sequences of the preamble are a subset of binary sequences of a LP-SS;
[0086] the preamble comprises overlaid sequences, and the overlaid sequences of the preamble are identical to overlaid sequences of a LP-SS or the LP-WUS;
[0087] the preamble comprises overlaid sequences, and the overlaid sequences of the preamble are a subset of overlaid sequences of a LP-SS or the LP-WUS;
[0088] the preamble has a M value larger than or equal to a M value of a LP-SS or the LP-WUS, and the M value indicates a number of OOK symbols in an Orthogonal Frequency Division Multiplexing, OFDM, symbol, or indicates a OOK symbol length or a number of bits in the OFDM symbol;
[0089] a number of OOK symbols in an OFDM symbol for the preamble is no less than a number of OOK symbols in an OFDM symbol for a LP-SS or the LP-WUS;
[0090] In some embodiments, LP-SS, LP-WUS, and / or preamble use the OOK modulation.
[0091] a power offset between the preamble and the LP-WUS, a Synchronization Signal / Physical Broadcast Channel Block, SSB, a Cell-Defining SSB, a CD-SSB, or a LP-SS is configured or predetermined;
[0092] a power for the preamble and at least one of the LP-WUS, an SSB, a CD-SSB, or a LP-SS are assumed as the same;
[0093] a power offset of the preamble to a Synchronization Signal / Physical Broadcast Channel Block, SSB, is identical to a power offset of the LP-SS to the SSB; or
[0094] a power offset of the preamble to an SSB is identical to a power offset of the LP-WUS to the SSB.
[0095] Preferably, at least one of the following is satisfied:
[0096] the binary sequences of the preamble comprise OOK-ON or OOK-OFF symbols;
[0097] the binary sequences of the preamble comprise 0 and 1, or -1 and 1;
[0098] the overlaid sequences of the preamble are Zadoff Chu, ZC, sequences, m sequences, pseudo noise, PN, sequences or gold sequences;
[0099] the overlaid sequences of the preamble are scrambled or overlaid on an OOK-ON symbol;
[0100] the overlaid sequences of the preamble are transmitted based on the preamble, the LP- SS, or the LP-WUS;
[0101] the M value of the preamble is a multiple of the M value of the LP-SS; or the M value of the preamble is a multiple of the M value of the LP-WUS.
[0102] Preferably, the power offset or the power is based on an OOK-ON symbol, OOK-OFF symbol, Orthogonal Frequency Division Multiplexing, OFDM, symbol, resource element, RE, or Energy Per Resource Element, EPRE.
[0103] Preferably, at least one of the following is satisfied:
[0104] the preamble and the LP-WUS are in a same slot; or
[0105] the preamble and the LP-WUS are in two or more continuous slots.
[0106] Preferably, at least one of the following is satisfied:
[0107] the LO comprises one or more monitoring occasions, MOs;
[0108] in response to that the preamble is not detected, the wireless communication terminal is not required to monitor the LO after the preamble;
[0109] the preamble is preceding the LO based on a LP-WUS monitoring space;
[0110] the preamble is preceding the LO based on an offset;
[0111] a number of beams of the preamble is identical to a number of beams of the LP-WUS, a LP-SS or an SSB; or
[0112] the preamble has a Quasi Co-Location, QCL, relationship with the LP-WUS, a LP-SS or an SSB.
[0113] The present disclosure relates to a computer program product comprising a computer-readable program medium code stored thereupon, the code, when executed by a processor, causing the processor to implement a wireless communication method recited in any one of foregoing methods.
[0114] The exemplary embodiments disclosed herein are directed to providing features that will become readily apparent by reference to the following description when taken in conjunction with the accompanying drawings. In accordance with various embodiments, exemplary systems, methods, devices and computer program products are disclosed herein. It is understood, however, that these embodiments are presented by way of example and not limitation, and it will be apparent to those of ordinary skill in the art who read the present disclosure that various modifications to the disclosed embodiments can be made while remaining within the scope of the present disclosure.
[0115] Thus, the present disclosure is not limited to the exemplary embodiments and applications described and illustrated herein. Additionally, the specific order and / or hierarchy of steps or operations in the methods disclosed herein are merely exemplary approaches. Based upon design preferences, the specific order or hierarchy of steps or operations of the disclosed methods or processes can be re-arranged while remaining within the scope of the present disclosure. Thus, those of ordinary skill in the art will understand that the methods and techniques disclosed herein present various steps or operations in a sample order, and the present disclosure is not limited to the specific order or hierarchy presented unless expressly stated otherwise.
[0116] The above and other aspects and their implementations are described in greater detail in the drawings, the descriptions, and the claims.
[0117] FIGs. 1 to 11 show schematic diagrams of the contents of an LP-WUS according to embodiments of the present disclosure.
[0118] FIG. 12 shows a schematic diagram of a relationship between paging occasions and LP-WUS occasions according to an embodiment of the present disclosure.
[0119] FIG. 13 shows a schematic diagram of offsets and LP-WUS occasions according to an embodiment of the present disclosure.
[0120] FIG. 14 shows a schematic diagram of offsets and LP-WUS occasions according to an embodiment of the present disclosure.
[0121] FIG. 15 shows a schematic diagram of preamble and LP-WUS according to an embodiment of the present disclosure.
[0122] FIG. 16 shows an example of a schematic diagram of a wireless communication terminal according to an embodiment of the present disclosure.
[0123] FIG. 17 shows an example of a schematic diagram of a wireless communication node according to an embodiment of the present disclosure.
[0124] FIGs. 18 and 19 show flowcharts of wireless communication methods according to some embodiments of the present disclosure.
[0125] In some embodiments of the present disclosure, in idle / inactive mode, the LP-WUS could be used to indicate one or more subgroups of UEs per Paging Occasion (PO) to wake-up and monitor the PDCCH (physical downlink control channel) , e.g., paging PDCCH. Some embodiments of the present disclosure provide the design of the LP-WUS for waking-up the subgroups.
[0126] In some embodiments, a wireless communication method is provided. The wireless communication method includes:
[0127] receiving (e.g., including detecting or monitoring) , by a wireless communication terminal (e.g., UE) from a wireless communication node (e.g., base station (BS) ) , a low power wake-up signal, LP-WUS; and
[0128] performing, by the wireless communication terminal, a behavior based on the LP-WUS.
[0129] In some embodiments, the behavior comprises waking up, monitoring a control channel (e.g., PDCCH) and / or starting a timer.
[0130] In some embodiments, the behavior also comprises transmitting PRACH, PUCCH based on the LP-WUS monitoring / reception / overlapping with another signal.
[0131] In some embodiments, the behavior also comprises not monitoring the LP-WUS or not monitoring PDCCH / paging occasion according to a result of LP-WUS receiving. For example, if the LP-WUS is not received, the UE is not required to monitor paging occasion.
[0132] In the paragraphs below, some aspects of the present disclosure are provided, but the present disclosure is not limited thereto. Besides, embodiments in different aspects described below can be combined or cross-referenced unless expressly stated otherwise.
[0133] Aspect 0:
[0134] In some embodiments, in idle / inactive mode, the LP-WUS is used to trigger a UE to monitor paging occasion. Before the PO, the UE may need to monitor LP-WUS to confirm whether these is paging message to receive. If there is no LP-WUS detected before the PO, the UE is not needed to monitor the PO. In this case, the UE can save more power. However, if using one LP-WUS targeting all the UEs of the PO may cause false wake-up, and finally cause no power saving gain. Therefore, LP-WUS is needed to indicate some of the subgroups of the UEs to monitor the PO and avoid wake-up all the UEs or false UEs for this PO.
[0135] In some embodiments, in idle / inactive mode, the UE may monitor LP-SS for sync and / or measurement. LP-SS and LP-WUS are based on OOK waveform, based on OOK symbols. LP-SS is a periodic signal comprising binary sequences or overlaid sequences.
[0136] In some embodiments, the preamble is configured before LP-WUS for sync, AGC, or measurement. With the preamble, the LP-WUS performance can be guaranteed that it would be impacted by the sync.
[0137] In some embodiments, the UE receives the LP-WUS, the UE monitors the LP-WUS, or the UE detects the LP-WUS may be used interchangeably in the present disclosure.
[0138] In some embodiments, configured is used interchangeably with determined or present.
[0139] Aspect 1:
[0140] In some embodiments, the LP-WUS indicates one or more subgroups, and the LP-WUS comprises at least one of:
[0141] a subgroup state corresponding to the one or more subgroups or corresponding to indexes for the one or more subgroups; in some embodiments, the subgroup state is comprised in an indication state of the LP-WUS;
[0142] a predetermined value; and / or
[0143] an offset.
[0144] In some embodiments, the LP-WUS indicates one or more subgroups via an indication state and the indication state is determined based on at least one of:
[0145] a maximum number of subgroups per paging occasion, PO; in some embodiments, the maximum number of subgroups per PO is SIB configured, higher larger configured, or pre-configured;
[0146] a number of the one or more subgroups;
[0147] a predetermined value;
[0148] indexes for the one or more subgroups;
[0149] an offset; and / or
[0150] a subgroup state.
[0151] In some embodiments, the predetermined value and / or offset is determined based on at least one of:
[0152] a number of subgroups of the one or more subgroups;
[0153] a maximum number of subgroups per paging occasion, PO;
[0154] a number of POs; in some embodiments, the POs corresponding to the number of POs is associated with one LP-WUS or one LP-WUS occasion the LP-WUS is monitored / received;
[0155] and / or
[0156] indexes for the one or more subgroups.
[0157] In some embodiments, the predetermined value comprises at least one of:
[0158] X-1 bits set as a first value and one bit set as a second value, wherein X is a positive integer;
[0159] one bit set as a second value, or
[0160] a first value or a second value.
[0161] In some embodiments, wherein the subgroup state is determined based on at least one of:
[0162] a maximum number of subgroups per paging occasion, PO; in some embodiments, the maximum number of subgroups per PO is SIB configured, higher larger configured, or pre-configured;
[0163] a number of the one or more subgroups;
[0164] a predetermined value;
[0165] indexes for the one or more subgroups; or
[0166] an offset.
[0167] In some embodiments, the predetermined value or offset for subgroup state could be the identical to the predetermined value or offset for indication state. In some embodiments, the predetermined value or offset for subgroup state could be different from the predetermined value or offset for indication state.
[0168] In some embodiments, in response to one subgroup state or indication state corresponding to multiple subgroup indexes, the multiple subgroup indexes are continuous;
[0169] in response to one subgroup state or indication state corresponding to multiple subgroup indexes, the multiple subgroup indexes are distributed with a gap; or
[0170] in response to one subgroup state or indication state corresponding to multiple subgroup indexes, the multiple subgroup indexes are discontinuous;
[0171] a maximum number of subgroups per paging occasion and / or a number of POs is configured or indicated by the wireless communication node;
[0172] a value range of the subgroup state or indication state corresponds to at least one of the number of the one or more subgroups or the indexes for the one or more subgroups;
[0173] a number of the one or more subgroups indicated by the LP-WUS is 2^m, wherein m is an integer no less than 0;
[0174] a number of the one or more subgroups indicated by the LP-WUS comprises at least one of {1, 2, 4, 8, 16, 32, 64, 128, 256} and the number is not larger than the maximum number of subgroups for one or more POs; or
[0175] the indication state or LP-WUS is no less than 5 bits and no larger than 16 bits.
[0176] Some examples are provided below.
[0177] In some embodiments, the LP-WUS may indicate one or more subgroups information. In some embodiments, the indicated subgroups of UEs performs the behavior based on the LP-WUS.
[0178] In some embodiments, the LP-WUS may indicate 1, 2, 4, 8, 16, 32, 64, 128, or 256 subgroups by using 9 bits information bits to indicate one or more subgroups from a maximum of 256 subgroups (see FIG. 1) .
[0179] In some embodiments, examples corresponding to the states in FIG. 1 are described as following:
[0180] the LP-WUS may indicate one subgroup using 256 states (also referred to as subgroup states in the present disclosure) , and / or the subgroup index may be from 0 to 255 (e.g., each state corresponds to one subgroup) ;
[0181] the LP-WUS may indicate two subgroups using 128 states (e.g., each state corresponds to two subgroups with two indexes, such as {0, 1} , {2, 3} , . . ., {254, 2 55} ;
[0182] the LP-WUS may indicate 4 subgroups using 64 states (e.g., each state corresponds to 4 subgroups with 4 indexes, such as {0, 1, 2, 3} , {4, 5, 6, 7} , . . ., {252, 253, 254, 255} ;
[0183] the LP-WUS may indicate 8 subgroups using 32 states (e.g., each state corresponds to 8 subgroups with 8 indexes, such as {0, 1, 2, 3, 4, 5, 6, 7} , . . ., {248, 249, 250, 251, 252, 253, 254, 255} ;
[0184] the LP-WUS may indicate 16 subgroups using 16 states (e.g., each state corresponds to 16 subgroups with 16 indexes, such as {0~15} , . . ., {240~255} ;
[0185] the LP-WUS may indicate 32 subgroups using 8 states (e.g., each state corresponds to 32 subgroups with 32 indexes, such as {0~31} , . . ., {224~255} , and / or 8 states in total;
[0186] the LP-WUS may indicate 64 subgroups using 4 states (e.g., each state corresponds to 64 subgroups with 64 indexes, such as {0~63} , . . ., {192~255} ; and / or
[0187] the LP-WUS may indicate 128 subgroups using 2 states (e.g., each state corresponds to 128 subgroups with 128 indexes, such as {0~127} , {128~255} .
[0188] In some embodiments, the LP-WUS may indicate 1, 2, 4, 8, 16, 32, 64, or 128 subgroups by using 8 bits information bits to indicate one or more subgroups from a maximum of 128 subgroups (see FIG. 2) . Details can be ascertained by referring to the embodiments above, and will not be described herein.
[0189] In some embodiments, the LP-WUS may indicate 1, 2, 4, 8, 16, 32, or 64 subgroups by using 7 bits information bits to indicate one or more subgroups from a maximum of 64 subgroups (see FIG. 3) . Details can be ascertained by referring to the embodiment above, and will not be described herein.
[0190] In some embodiments, the LP-WUS may indicate 1, 2, 4, 8, 16, 32 subgroups by using 6 bits information bits to indicate one or more subgroups from a maximum of 32 subgroups (see FIG. 4) . Details can be ascertained by referring to the embodiment above, and will not be described herein.
[0191] In some embodiments, the LP-WUS may indicate 1, 2, 4, 8, 16 subgroups by using 5 bits information bits to indicate one or more subgroups from a maximum of 16 subgroups (see FIG. 5) . Details can be ascertained by referring to the embodiment above, and will not be described herein.
[0192] In some embodiments, the LP-WUS may indicate 1, 2, 4, 8 subgroups by using 4 bits information bits to indicate one or more subgroups from a maximum of 8 subgroups (see FIG. 6) . Details can be ascertained by referring to the embodiment above, and will not be described herein. In some embodiments, at least one of the following may apply:
[0193] the states may be determined by at least one of: a maximum number of subgroups per PO (e.g., configured / determined by SIB (system information block) , configured / determined by higher layer, or pre-configured / pre-determined) , an indicated number of subgroup (s) , a predetermined value comprising 0 and / or 1, and / or the corresponding subgroups index (es) ;
[0194] the subgroups indexes corresponding to an identical state are continuous if the indicated number of subgroups is larger than 1 (e.g., the LP-WUS can indicate more than one subgroup) ;
[0195] the subgroups indexes may satisfy subgroup index 2 = subgroup index 1 + n *F, wherein subgroup index 1 and subgroup index 2 may be indicated via one LP-WUS, n, F may be integers larger than or equal to 1;
[0196] the gNB may configure / indicate the maximum number of scheduled / indicated subgroups in one LP-WUS, and / or the maximum number of scheduled / indicated subgroups may be one of {1, 2, 4, 8, 16, 32, 64, 128, 256} ;
[0197] X bits in the LP-WUS are set to zeros and 1, including X-1 bits to be indicated as ‘0’ and one bit to be indicated as ‘1’ ; and / or
[0198] X bits in the LP-WUS are set to zero and there is an offset to determine the state, wherein the offset value could one at least one of {2, 4, 8, 16, 32, 64, 128, 256} .
[0199] In some embodiments, configured is interchangeable with determined.
[0200] In some embodiments, an example based on maximum 256 subgroups is shown in FIG. 7.
[0201] In some embodiments, the LP-WUS may indicate one subgroup among the 256 subgroups using 256 states (e.g., each state corresponds to one subgroup) . In some embodiments, the most significant bit of each state is 1. That is, each state has an offset (e.g., 256) . In some embodiments, the UE may determine that the LP-WUS may indicate one subgroup based on the value of the offset.
[0202] In some embodiments, the LP-WUS may indicate two subgroups among the 256 subgroups using 128 states (e.g., each state corresponds to two subgroups) . In some embodiments, the most significant bit of each state is 1. That is, each state has an offset (e.g., 128) . In some embodiments, the UE may determine that the LP-WUS may indicate one subgroup based on the value of the offset.
[0203] The cases that the LP-WUS indicates 4, 8, 16, 32, 64, or 128 subgroups among the 256 subgroups can be deduced accordingly.
[0204] In some embodiments, based on maximum 128 subgroups, the offset could be {2, 4, 8, 16, 32, 64, 128} . Details can be ascertained by referring to the embodiment above, and will not be described herein.
[0205] In some embodiments, based on maximum 64 subgroups, the offset could be {2, 4, 8, 16, 32, 64} . Details can be ascertained by referring to the embodiment above, and will not be described herein.
[0206] In some embodiments, based on maximum 32 subgroups, the offset could be {2, 4, 8, 16, 32} . Details can be ascertained by referring to the embodiment above, and will not be described herein.
[0207] In some embodiments, based on maximum 16 subgroups, the offset could be {2, 4, 8, 16} . Details can be ascertained by referring to the embodiment above, and will not be described herein.
[0208] In some embodiments, based on maximum 8 subgroups, the offset could be {2, 4, 8, } . Details can be ascertained by referring to the embodiment above, and will not be described herein.
[0209] In some embodiments, based on maximum 4 subgroups, the offset could be {2, 4} . Details can be ascertained by referring to the embodiment above, and will not be described herein.
[0210] In some embodiments, based on maximum 2 subgroups, the offset could be {2} . Other cases are similar. Details can be ascertained by referring to the embodiment above, and will not be described herein.
[0211] In some embodiments, the LP-WUS may indicate 1, 2, or N subgroups, wherein N is the maximum number of subgroups per PO.
[0212] For example, referring to FIG. 8, the LP-WUS may indicate one subgroup among the 256 subgroups (e.g., N=256) . The LP-WUS may using 8 bits (i.e., 256 states) to indicate one of the 256 subgroups (e.g., each state corresponds to one subgroup) .
[0213] Besides, the LP-WUS may indicate two subgroups among the 256 subgroups (e.g., N=256) . The LP-WUS may using 32640 states (with values from 256 to 32895, and that is, with an offset 256) to indicate two subgroups among the 256 subgroups.
[0214] Further, the LP-WUS may indicate all of the 256 subgroups using one state with a value from 32896 to 65535. That is, the offset is 32896.
[0215] In some embodiments, at least one of the following may apply:
[0216] the states may be determined by: a maximum number of subgroups per PO, an indicated number of subgroup, a predetermined value comprising 0 and 1, corresponding subgroups indexes, and / or a range;
[0217] the subgroups indexes corresponding to an identical state may be continuous or discontinuous;
[0218] X bits in the LP-WUS may be set to 0 and / or 1, including X-1 bits to be indicated as ‘0’ and one bit to be indicated as ‘1’ ;
[0219] based on a (value) range, the number of subgroups indicated by the LP-WUS may be determined;
[0220] X bits are set to zero and there is an offset to determine the state, wherein the offset value could one at least one of {2, 4, 8, 16, 32, 64, 128, 256, 512, 1024, 2048, 4096, 8192, 16384, 32896} ; and / or
[0221] the number of subgroups indicated by the LP-WUS satisfies 2^m subgroups, m=0, 1, 2, 3, 4, 5, 6, 7, 8, etc.
[0222] In some embodiments, the LP-WUS indicates one or more subgroups, and at least one of the following is satisfied:
[0223] a maximum number of subgroups per paging occasion are divided into K groups, wherein K is a positive integer;
[0224] a number of subgroups based on one or more POs are divided into K groups, wherein K is a positive integer;
[0225] a first group among K groups contains a first number of subgroups, and the other groups among K groups contains a second number of subgroups, wherein K is a positive integer;
[0226] the LP-WUS indicates one, two, or all of subgroups in one group among K groups; or
[0227] the LP-WUS indicates one, two, or all of subgroups in one or more groups among K groups.
[0228] In some embodiments, N is the maximum number of subgroups per PO.
[0229] In some embodiments, the N subgroups may be further divided into K groups, each group contains M=N / K subgroups. In some embodiments, M+M (M-1) states may be used in the LP-WUS to indicate one or two subgroups in one group.
[0230] For example, N=256, K=37, M=ceil (N / K) =7, the last group only contains 4 subgroups and the other 36 groups contains 7 subgroups (see FIG. 9) .
[0231] In some embodiments, at least one of the following may apply:
[0232] the maximum number of subgroups per PO may be divided into K groups;
[0233] the last or first group may contain the different number of subgroups, and / or the other groups contains the same number of subgroups;
[0234] the LP-WUS may indicate one or two subgroups or all the subgroups; and / or
[0235] the LP-WUS may indicate one or two subgroups or all the subgroups in one group.
[0236] Aspect 2:
[0237] In some embodiments, the LP-WUS is received (receive is interchangeable with monitor or detect in present disclosure, unless otherwise state) based on a LP-WUS occasion, LO, and the LO is associated to one or more POs.
[0238] In some embodiments, the LP-WUS comprises an indication state determined by at least one of:
[0239] a maximum number of subgroups per paging occasion, PO;
[0240] a number of one or more subgroups;
[0241] a predetermined value;
[0242] indexes for one or more subgroups;
[0243] an offset;
[0244] a number of the one or more POs; or
[0245] indexes for the one or more POs.
[0246] In some embodiments, an indication state comprises a subgroup state.
[0247] In some embodiments, a subgroup state in the LP-WUS is determined by at least one of :
[0248] a maximum number of subgroups per paging occasion, PO;
[0249] a number of the one or more subgroups;
[0250] a predetermined value;
[0251] indexes for the one or more subgroups; and / or
[0252] an offset.
[0253] In some embodiments, the predetermined value or offset for the subgroup state could be the identical to the predetermined value or offset for the indication state. In some embodiments, the predetermined value or offset for the subgroup state could be additional to or different with the predetermined value or offset for the indication state.
[0254] In some embodiments, if an indication state is determined by more information elements, it is kind of joint indication.
[0255] In some embodiments, a number of the one or more POs is configured (configured can be implemented as ‘determined’ in some use cases) by System Information Block 1, SIB1, other System Information, OSI, system information or by the wireless communication node.
[0256] In some embodiments, wherein the LO is associated with M POs and wherein the LO is associated with a first PO and next M-1 POs, wherein the LO is before the first PO with an offset.
[0257] In some embodiments, in idle / inactive mode, one LP-WUS occasion (LO) may be associated to one PO (e.g., a UE receives (e.g., monitors) a LP-WUS in one LO monitors a control channel in one PO) . In some embodiments, one LP-WUS occasion can be associated to multiple POs (e.g., a UE receives (e.g., monitors) a LP-WUS in one LO monitors a control channel in multiple POs) . The LP-WUS occasion comprises at least one of the following: one or more LP-WUS monitoring occasions, a window, multiple beams, and / or one or more repetitions.
[0258] In some embodiments, the LP-WUS may indicate the PO information, e.g., PO index, based on the configuration. For example, the UE may determine that one LO is associated with 4 POs based on RRC configuration. In some embodiments, 2 bits in the LP-WUS may indicate which PO is targeted (e.g., indicated) and the LP-WUS also indicate the subgroup information corresponding to this PO.
[0259] In some embodiments, Z bits may be used for indicating a target PO, X bits may be set as a predetermined value (same as in aspect 1) , and / or Y bits correspond to states for indicating one or more subgroups. In some embodiments, said X bits and Y bits are substantially identical to the X bits and states described in Aspect 1. In some embodiments, X+Y bits may be used for subgroup indexes indication based on one PO. In some embodiments, Z bits may be used to determine which PO (s) is target, wherein Z could be at least one of {0, 1, 2, 3, 4, 5, 6} , Z=0 mean there is no bit in the LP-WUS to indicate which PO (s) . In some embodiments, by default, the LO is associated with its own PO.
[0260] An example based on Z bits to indicate which PO (s) being targeted is shown in FIG. 10. The LP-WUS may use 256 states to indicate one PO, use 128 states to indicate two POs, use 64 states to indicate four POs, and so on.
[0261] In some embodiments, Z bits may be ahead of the X+Y bits, or Z bits may be after the X+Y bits. In some embodiments, Z bits is ahead of the X+Y bits.
[0262] In some embodiments, at least one of the following may apply:
[0263] the states for indicating the PO (s) may be determined by at least one of: an indicated number of subgroup, a predetermined value comprising 0 and / or 1, an offset, a value range, corresponding subgroups indexes, a number of POs indicated by the LP-WUS, and / or the target PO index;
[0264] the gNB may configure / indicate the number of POs associated with the LO; and / or
[0265] Z bits may be used to determine which PO or PO index, wherein Z may be at least one of {1, 2, 3, 4, 5, 6} .
[0266] In some embodiments, the POs corresponding to the number of POs is associated with one LP-WUS or one LP-WUS occasion the LP-WUS is monitored or received.
[0267] In some embodiments, a joint indication may be used, in which the LP-WUS jointly indicate a number of subgroups indicated by the LP-WUS and indicated subgroups for all associated POs.
[0268] For example, referring to FIG. 11, there are a certain number of (e.g., N) subgroups corresponding to 4 POs. The LP-WUS may indicate N / 1024 subgroup (s) among the N subgroups corresponding to 4 POs using 1024 states (e.g., each state corresponds to N / 1024 subgroup (s) ) .
[0269] The LP-WUS may indicate N / 512 subgroup (s) among the N subgroups corresponding to 4 POs using 512 states (e.g., each state corresponds to N / 512 subgroup (s) ) .
[0270] The LP-WUS may indicate N / 256 subgroup (s) among the N subgroups corresponding to 4 POs using 256 states (e.g., each state corresponds to N / 256 subgroup (s) ) .
[0271] The cases that the LP-WUS indicates N / 128, N / 64, N / 32, N / 16, N / 8, N / 4, N / 2 or all subgroups corresponding to 4 POs can be deduced accordingly.
[0272] In some embodiments, at least one of the following may apply:
[0273] the LO may be associated with M POs, for the first PO, the subgroup index is 0~x1-1, for the second PO, the subgroup index is x1~2x1-1, . . . for the M-th PO, the subgroup index is (M1) x1 ~ M*x1 –1; and / or
[0274] Ceil (Log2 (M*X) ) or Log2 (M*X) bits in the LP-WUS may be used for the joint indication described above, wherein M is the number of associated POs, and X is the maximum number of subgroups per PO.
[0275] In some embodiments, at least one of the following may apply:
[0276] one LO associated to M POs may indicate that multiple LOs associated to 1 PO (see FIG. 12) ;
[0277] the LO is associated with a first PO and next M-1 POs, wherein the first PO is after the LO with an offset; and / or
[0278] the UE may monitor the LP-WUS based on these M LOs.
[0279] Aspect 3:
[0280] In some embodiments, the behavior is performed based on one or more offsets, or the LP-WUS is received based on one or more offsets.
[0281] In some embodiments, the offset is defined between a LO and a physical downlink control channel, PDCCH, occasion;
[0282] the offset is defined between a starting or ending of a LO and a physical downlink control channel, PDCCH, occasion;
[0283] the offset is defined between a monitoring occasion, MO, of a LO and PDCCH occasion;
[0284] the offset is defined between a first or last monitoring occasion, MO, of a LO and a PDCCH occasion;
[0285] the offset is defined between a LO and an associated PDCCH occasion;
[0286] the offset is defined between an MO of a LO and an associated PDCCH occasion;
[0287] the offset is defined between an LO and a start of a timer; or
[0288] the offset is defined between an MO of a LO and a start of a timer.
[0289] In some embodiments, PDCCH occasion comprises a PDCCH occasion for monitoring a paging control channel; or PDCCH occasion comprises a PDCCH occasion for monitoring a control channel provided by a user equipment specific search space, USS, set or a type-3 Common Search Space, CSS, set.
[0290] In some embodiments, the one or more offsets are associated to a same periodicity;
[0291] the one or more offsets are configured based on one or more LP-WUS monitoring space configurations;
[0292] the one or more offsets are associated with one or more LP-WUS monitoring space configurations; and / or
[0293] the one or more offsets are configured in one information element, or via SIB1.
[0294] In some embodiments, a monitoring space configuration is a set of configurations, comprising at least one of: an offset, a periodicity, a repetition number, information of time domain resources for the LP-WUS, or information of frequency domain resources for the LP-WUS, a Transmission Configuration Indication, TCI, TCI state or Quasi Co-Location, QCL, information.
[0295] In some embodiments, information of time domain resources for the LP-WUS indicates the slots, symbols, resource unit, OOK symbols, overlaid sequences or beams used for the LP-WUS.
[0296] In some embodiments, information of frequency domain resources for the LP-WUS indicates the REs, PRBs, or other frequency resources based on REs or PRBs, the ports used for the LP-WUS.
[0297] In some embodiments, a monitoring space configuration is configured via an information element.
[0298] In some embodiments, a monitoring space configuration comprises one or more parameter configurations.
[0299] In some embodiments, the wireless communication terminal receives the LP-WUS based on a minimum offset among the one or more offsets which are larger than a wake-up delay of the wireless communication terminal; or
[0300] the wireless communication terminal receives the LP-WUS based on one or more offsets among the one or more offsets which are larger than a wake-up delay of the wireless communication terminal.
[0301] In some embodiments, the wake-up delay is a time delay value reported from a wireless communication terminal to a wireless communication node. The wake-up delay is a time delay value defined as minimum gap time between the LP-WUS reception and the UE / MR (main radio) to start the PDCCH monitoring.
[0302] In some embodiments, the wake-up delay is defined as a minimum gap time between the LP-WUS reception and the UE / MR (main radio) starting the PDCCH monitoring. In some embodiments, the UE chooses one or more wake-up delays and reports the chosen one or more wake-up delays to the wireless communication node.
[0303] In some embodiments, the wake-up delay is a time delay value defined as minimum gap time between LP-WUS reception and PDCCH monitoring.
[0304] In some embodiments, in idle / inactive mode, the LO for monitoring the LP-WUS could be configured with a same periodicity with a paging cycle or a I-DRX (Idle Mode Discontinuous Reception) cycle. In some embodiments, one LO may include one or more monitoring occasions (MO) .
[0305] In some embodiments, the LP-WUS is used to trigger the UE perform the behavior described above (e.g., to monitor the control channel during one or more corresponding POs (also referred to as to monitor one or more corresponding POs) ) . In some embodiments, the UE may monitor the LP-WUS before the corresponding PO if the entry condition satisfies.
[0306] Since different UEs may have different wake-up delays, the offset between PO and LP-WUS may cover different situations. In some embodiments, the wake-up delay is a time delay value reported from the UE to the gNB. In some embodiments, the wake-up delay is a time delay value defined as the minimum gap time between the LP-WUS reception and MR (main radio) starting PDCCH monitoring. In some embodiments, the wake-up delay is a time delay value defined as the minimum gap time between LP-WUS reception and PDCCH monitoring.
[0307] In some embodiments, different offsets value may be defined corresponding to different UE capability, (e.g., wake-up delay) . In some embodiments, different offsets values may be applied for the Ues monitoring the LP-WUS according to different UE capabilities.
[0308] In some embodiments, if wake-up delay is defined based on X, e.g., 4 in the table below, values, there may be X offsets for different wake-up delay, wherein the offset I is no less than wake-up delay i.
[0309] In some embodiments, the UE monitors the LO based on the offset i which is corresponding to wake-up delay i.
[0310] In some embodiments, different offset values may be defined. In some embodiments, the UE may monitor the LO based on one or more offset values (e.g., based on a pre-configured rule) .
[0311] In some embodiments, if the UE monitors one LO during a cycle, at least one of following may be applied:
[0312] all the offsets, which satisfies the wake-up delay smaller than any of these offsets, may be determined, and the UE monitor the LO based on the minimum offset; or
[0313] the UE may monitor the LO based on a offset which is the minimum one among the offsets greater than the wake-up delay.
[0314] In some embodiments, if the UE could monitor one or more LOs during a cycle, the UE may monitor the LO based on the offsets which satisfies the wake-up delay is smaller than the offsets. In some embodiments, if the UE could monitor one or more LOs during a cycle, the UE may monitor the one or more LOs based on the offsets which satisfies the wake-up delay is smaller than the offsets.
[0315] FIG. 13 shows a schematic diagram of an LP-WUS according to an embodiment of the present disclosure. For example, the gNB may configure two offsets, offset1 and offset2, wherein offset1 is a larger value (e.g., larger than 400 ms) and offset 2 is a smaller value (e.g., 80 ms) . In some embodiments, the UE with 400 ms wake up delay may monitor the LO based on the offset 1, and / or the UE with 20 ms wake up delay may monitor the LO based on the offset 2.
[0316] FIG. 14 shows a schematic diagram of an LP-WUS according to an embodiment of the present disclosure. For example, the gNB may configure two offsets, offset1 and offset2, wherein offset1 is a larger value (e.g., larger than 400 ms) and offset 2 is a smaller value (e.g., 80 ms) . In some embodiments, the UE with 400 ms wake up delay may monitor the LO based on the offset 1, and / or the UE with 20 ms wake up delay may monitor more than one LO based on the offset 2.
[0317] In some embodiments, the UE behaviors for monitoring PO after receiving the LP-WUS may comprise at least one of the following:
[0318] UE monitor the nearest PO after the wake-up delay or offset; and / or
[0319] UE monitor the associated PO.
[0320] In some embodiments, a monitoring space for LP-WUS monitoring may be defined. In some embodiments, each monitoring space may be configured with a periodicity and one offset. In some embodiments, the UE may be configured with one or more monitoring spaces. In some embodiments, the periodicity may be the same for different monitoring spaces.
[0321] Aspect 4:
[0322] In some embodiments, a preamble is preceded the LP-WUS, a repeated LP-WUS, or a LO for monitoring the LP-WUS.
[0323] In some embodiments, at least one of the following is satisfied:
[0324] the preamble preceding the LP-WUS or a repeated LP-WUS or the LO is determined by system information block, SIB, signalling;
[0325] the preamble comprises binary sequences, and the binary sequences of the preamble are identical to binary sequences of a low power synchronization signal, LP-SS;
[0326] the preamble comprises binary sequences, and the binary sequences of the preamble are a subset of binary sequences of a LP-SS;
[0327] the preamble comprises overlaid sequences, and the overlaid sequences of the preamble are identical to overlaid sequences of a LP-SS or the LP-WUS;
[0328] the preamble comprises overlaid sequences, and the overlaid sequences of the preamble are a subset of overlaid sequences of a LP-SS or the LP-WUS;
[0329] the preamble has a M value larger than or equal to a M value of a LP-SS or the LP-WUS, and the M value indicates a number of OOK symbols in an Orthogonal Frequency Division Multiplexing, OFDM, symbol, or indicates a OOK symbol length or a number of bits in the OFDM symbol;
[0330] a number of OOK symbols in an OFDM symbol for the preamble is no less than a number of OOK symbols in an OFDM symbol for a LP-SS or the LP-WUS;
[0331] a power offset between the preamble and the LP-WUS, a Synchronization Signal / Physical Broadcast Channel Block, SSB, a Cell-Defining SSB, a CD-SSB, or a LP-SS is configured or predetermined;
[0332] a power for the preamble and at least one of the LP-WUS, an SSB, a CD-SSB, or a LP-SS are assumed as the same;
[0333] a power offset of the preamble to a Synchronization Signal / Physical Broadcast Channel Block, SSB, is identical to a power offset of the LP-SS to the SSB; and / or
[0334] a power offset of the preamble to an SSB is identical to a power offset of the LP-WUS to the SSB.
[0335] In some embodiments, at least one of the following is satisfied:
[0336] the binary sequences of the preamble comprise OOK-ON or OOK-OFF symbols;
[0337] the binary sequences of the preamble comprise 0 and 1, or -1 and 1;
[0338] the overlaid sequences of the preamble are Zadoff Chu, ZC, sequences, m sequences, pseudo noise, PN, sequences or gold sequences;
[0339] the overlaid sequences of the preamble are scrambled or overlaid on an OOK-ON symbol;
[0340] the overlaid sequences of the preamble are transmitted based on the preamble, the LP-SS, or the LP-WUS;
[0341] the M value of the preamble is a multiple of the M value of the LP-SS; or the M value of the preamble is a multiple of the M value of the LP-WUS.
[0342] In some embodiments, the power offset or the power is based on an OOK-ON symbol, OOK-OFF symbol, Orthogonal Frequency Division Multiplexing, OFDM, symbol, resource element, RE, or Energy Per Resource Element, EPRE.
[0343] In some embodiments, at least one of the following is satisfied:
[0344] the preamble and the LP-WUS are in a same slot; and / or
[0345] the preamble and the LP-WUS are in two or more continuous slots.
[0346] In some embodiments, at least one of the following is satisfied:
[0347] the LO comprises one or more monitoring occasions, MOs;
[0348] in response to that the preamble is not detected, the wireless communication terminal is not required to monitor the LO after the preamble;
[0349] the preamble is preceding the LO based on a LP-WUS monitoring space;
[0350] the preamble is preceding the LO based on an offset;
[0351] a number of beams of the preamble is identical to a number of beams of the LP-WUS, a LP-SS or an SSB; and / or
[0352] the preamble has a Quasi Co-Location, QCL, relationship with the LP-WUS, a LP-SS or an SSB.
[0353] Some embodiments of the present disclosure relate to preamble related characteristics.
[0354] In some embodiments, the preamble precedes the LP-WUS or the repeated LP-WUS or the LO.
[0355] In some embodiments, the preamble preceding the LP-WUS comprises that the preamble precedes LP-WUS with repetitions. If preamble precedes the repeated LP-WUS, it means the preamble precedes the LP-WUS with multiple repetitions. And only one preamble for different number of LP-WUS repetitions. For example, the LP-WUS repetition number is 2 in one LO, and 2 repetitions are on two monitoring occasions. One preamble is preceded the repeated LP-WUS or one preamble is before the two MOs.
[0356] In some embodiments, the preamble preceding the LP-WUS comprises that the preamble precedes the LP-WUS with multiple beams. In this case, only one preamble precedes the LP-WUS with multiple beams.
[0357] In some embodiments, the preamble preceding the LP-WUS comprises that the preamble precedes the LP-WUS with multiple beams and repetitions. In this case, only one preamble precedes the LP-WUS with multiple beams and repetitions.
[0358] In some embodiments, the preamble precedes the LP-WUS means the preamble is before (e.g., located, transmitted, allocated, configured or received before) the LP-WUS, or the LP-WUS is after (e.g., located, transmitted, allocated, configured or received after) the preamble.
[0359] In some embodiments, an SIB signalling may indicate a preamble is preceded the LP-WUS and / or LO.
[0360] In some embodiments, the preamble may use the same binary sequences as Low-Power Synchronization Signal (LP-SS) , and / or same set of binary sequences. In some embodiments, the binary sequence may comprise On–off keying (OOK) -ON or OOK-OFF symbols. In some embodiments, the binary sequence may comprise 0, 1 or -1, 1. In some embodiments, the preamble may use the same overlaid sequences as LP-SS / LP-WUS.
[0361] In some embodiments, the overlaid sequences may be ZC (Zadoff Chu) sequences, m sequences, PN (pseudo noise) sequences and / or gold sequences. In some embodiments, the overlaid sequences may be scrambled / overlaid on the OOK-ON symbol. In some embodiments, the overlaid sequences may be transmitted based on preamble or LP-SS or LP-WUS.
[0362] In some embodiments, the preamble may use the larger M value than LP-SS / LP-WUS. In some embodiments, M values may indicate the number of OOK symbols in an OFDM (Orthogonal Frequency Division Multiplexing) symbol. In some embodiments, M value may indicate the OOK symbol length. In some embodiments, M value may indicate the number of bits in an OFDM symbol. In some embodiments, the LP-SS may have the M value at least one of {1, 2, 4} . In some embodiments, the preamble may have the M value at least one of {2, 4, 8} . In some embodiments, the M value for preamble may be a multiple (e.g., 2) of the M value for LP-SS / LP-WUS.
[0363] In some embodiments, the preamble may use the same M value as which of the LP-SS / LP-WUS.
[0364] In some embodiments, the preamble may have the power offset to SSB the same as the power offset of the LP-SS to SSB. In some embodiments, the preamble may have the power offset to SSB the same as the power offset of the LP-WUS to SSB. In some embodiments, the UE assumes the same power (e.g., on Resource element (RE) basis) between the LP-WUS and the preamble.
[0365] In some embodiments, the preamble precedes the LP-WUS. In some embodiments, the preamble and the LP-WUS are in the same slot, and / or in the same continuous slots. In some embodiments, the preamble and the LP-WUS are not in the same slot.
[0366] In some embodiments, the preamble precedes an LO. In some embodiments, an LO may include one or more MOs (see FIG. 15) . In some embodiments, the MOs may be continuous. In some embodiments, if the preamble is not detected, the UE does not need to monitor this LO. In some embodiments, the preamble is preceding every LO based on an LP-WUS monitoring space. In some embodiments, the preamble is preceding every LO based on an offset. Two preambles are configured or determined if two offsets are configured in one -DRX cycle / paging cycle.
[0367] In some embodiments, the LP-SS is before (e.g., located, transmitted, allocated, configured or received before) the LP-WUS / LO. In some embodiments, the LP-SS is taken as the preamble for the LP-WUS.
[0368] In some embodiments, the power control for the LP-WUS may satisfy at least one of following:
[0369] UE may assume the power ratio of the LP-WUS to the LP-SS, the SSB, the SSS (Secondary Synchronization Signal) , or the PSS (Primary Synchronization Signal) is within -x and x dB; and / or
[0370] UE may assume the power offset between the LP-WUS and the LP-SS or the SSB or the SSS or the PSS is x dB.
[0371] In some embodiments, the power ratio or the power offset may be based on the OOK-ON symbol, the OOK-OFF symbol, the OFDM symbol, the RE, and / or the Energy Per Resource Element (EPRE) .
[0372] In some embodiments, an OOK symbol is either an OOK-On Symbol where the multicarrier signal is present or an OOK Off Symbol where no signal is present.
[0373] In some embodiments, an OOK-ON symbol can be overlaid with sequences, wherein the sequence has a phase and sequences could be ZC, PN, m, or gold sequences.
[0374] In some embodiments, the OOK-ON symbol is ‘1’ or OOK-Off symbol is 0. in some embodiments, the OOK-ON symbol is high voltage or OOK-Off symbol is low voltage.
[0375] In some embodiments, the LP-WUS supports / uses Manchester coding.
[0376] In some embodiments, the LP-WUS is attached with CRC bits. The length, size and / or the number of CRC bits is determined based on at least one of the maximum number of subgroups per PO, and / or the number of POs. For example, if the maximum number of subgroups per PO is larger, the length, size or number of CRC bits is larger. If the maximum number of subgroups per PO is smaller, the length, size or number of CRC bits is smaller. For example, for the LP-WUS indicates 64, 128, or 256 subgroups per PO, CRC bits is 8 bits. For the LP-WUS indicates16, or 32 subgroups per PO, CRC bits is 6 bits. In connected mode, the length, size and / or the number of CRC bits is determined based on at least one of the maximum number of target UEs, a number of IDs, and / or a RRC configuration.
[0377] FIG. 16 relates to a diagram of a wireless communication terminal 30 according to an embodiment of the present disclosure. The wireless communication terminal 30 may be a tag, a mobile phone, a laptop, a tablet computer, an electronic book or a portable computer system and is not limited herein. The wireless communication terminal 30 may be used to implement the UE described in this disclosure. The wireless communication terminal 30 may include a processor 300 such as a microprocessor or Application Specific Integrated Circuit (ASIC) , a storage unit 310 and a communication unit 320. The storage unit 310 may be any data storage device that stores a program code 312, which is accessed and executed by the processor 300. Embodiments of the storage unit 310 include but are not limited to a subscriber identity module (SIM) , read-only memory (ROM) , flash memory, random-access memory (RAM) , hard-disk, and optical data storage device. The communication unit 320 may a transceiver and is used to transmit and receive signals (e.g., messages or packets) according to processing results of the processor 300. In an embodiment, the communication unit 320 transmits and receives the signals via at least one antenna 322 or via wiring.
[0378] In an embodiment, the storage unit 310 and the program code 312 may be omitted and the processor 300 may include a storage unit with stored program code.
[0379] The processor 300 may implement any one of the steps or operations in exemplified embodiments on the wireless communication terminal 30, e.g., by executing the program code 312.
[0380] The communication unit 320 may be a transceiver. The communication unit 320 may as an alternative or in addition be combining a transmitting unit and a receiving unit configured to transmit and to receive, respectively, signals to and from a wireless communication node.
[0381] In some embodiments, the wireless communication terminal 30 may be used to perform the operations of the UE described in this disclosure. In some embodiments, the processor 300 and the communication unit 320 collaboratively perform the operations described in this disclosure. For example, the processor 300 performs operations and transmit or receive signals, message, and / or information through the communication unit 320.
[0382] FIG. 17 relates to a diagram of a wireless communication node 40 according to an embodiment of the present disclosure. The wireless communication node 40 may be a satellite, a base station (BS) , a gNB, a network entity, a Domain Name System (DNS) server, a Mobility Management Entity (MME) , Serving Gateway (S-GW) , Packet Data Network (PDN) Gateway (P-GW) , a radio access network (RAN) , a next generation RAN (NG-RAN) , a data network, a core network, a communication node in the core network, or a Radio Network Controller (RNC) , and is not limited herein. In addition, the wireless communication node 40 may include (perform) at least one network function such as an access and mobility management function (AMF) , a session management function (SMF) , a user place function (UPF) , a policy control function (PCF) , an application function (AF) , etc. The wireless communication node 40 may be used to implement the BS or gNB described in this disclosure. The wireless communication node 40 may include a processor 400 such as a microprocessor or ASIC, a storage unit 410 and a communication unit 420. The storage unit 410 may be any data storage device that stores a program code 412, which is accessed and executed by the processor 400. Examples of the storage unit 410 include but are not limited to a SIM, ROM, flash memory, RAM, hard-disk, and optical data storage device. The communication unit 420 may be a transceiver and is used to transmit and receive signals (e.g., messages or packets) according to processing results of the processor 400. In an embodiment, the communication unit 420 transmits and receives the signals via at least one antenna 422 or via wiring.
[0383] In an embodiment, the storage unit 410 and the program code 412 may be omitted. The processor 400 may include a storage unit with stored program code.
[0384] The processor 400 may implement any steps or operations described in exemplified embodiments on the wireless communication node 40, e.g., via executing the program code 412.
[0385] The communication unit 420 may be a transceiver. The communication unit 420 may as an alternative or in addition be combining a transmitting unit and a receiving unit configured to transmit and to receive, respectively, signals, messages, or information to and from a wireless communication node or a wireless communication terminal.
[0386] In some embodiments, the wireless communication node 40 may be used to perform the operations of the base station described in this disclosure. In some embodiments, the processor 400 and the communication unit 420 collaboratively perform the operations described in this disclosure. For example, the processor 400 performs operations and transmit or receive signals through the communication unit 420.
[0387] A wireless communication method is also provided according to an embodiment of the present disclosure. In an embodiment, the wireless communication method may be performed by using a wireless communication terminal (e.g., a UE) . In an embodiment, the wireless communication terminal may be implemented by using the wireless communication terminal 30 described in this disclosure, but is not limited thereto.
[0388] Referring to FIG. 18, in an embodiment, the wireless communication method includes: receiving, by a wireless communication terminal from a wireless communication node, a low power wake-up signal, LP-WUS; and performing, by the wireless communication terminal, a behavior based on the LP-WUS.
[0389] Details in this regard can be ascertained with reference to the paragraphs above, and will not be repeated herein.
[0390] Another wireless communication method is also provided according to an embodiment of the present disclosure. In an embodiment, the wireless communication method may be performed by using a wireless communication node (e.g., a BS or gNB) . In an embodiment, the wireless communication node may be implemented by using the wireless communication node 40 described in this disclosure, but is not limited thereto.
[0391] Referring to FIG. 19, in an embodiment, the wireless communication method includes: transmitting, by a wireless communication node to a wireless communication terminal, a low power wake-up signal, LP-WUS, to trigger the wireless communication terminal performing a behavior.
[0392] Details in this regard can be ascertained with reference to the paragraphs above, and will not be repeated herein.
[0393] In some embodiments, the wireless communication terminal used in the present disclosure may indicate the UE described above.
[0394] In some embodiments, the wireless communication node used in the present disclosure may indicate the BS or gNB described above.
[0395] While various embodiments of the present disclosure have been described above, it should be understood that they have been presented by way of example only, and not by way of limitation. Likewise, the various diagrams may depict an example architecture or configuration, which are provided to enable persons of ordinary skill in the art to understand exemplary features and functions of the present disclosure. Such persons would understand, however, that the present disclosure is not restricted to the illustrated example architectures or configurations, but can be implemented using a variety of alternative architectures and configurations. Additionally, as would be understood by persons of ordinary skill in the art, one or more features of one embodiment can be combined with one or more features of another embodiment described herein. Thus, the breadth and scope of the present disclosure should not be limited by any one of the above-described exemplary embodiments.
[0396] It is understood that, in the present disclosure, the term “and / or” or symbol “ / ” may include any and all combinations of one or more of the associated listed items. For example, A and / or B and / or C includes any and all combinations of one or more of A, B, and C, including A, B, C, A and B, A and C, B and C, and a combination of A and B and C. Likewise, A / B / C includes any and all combinations of one or more of A, B, and C, including A, B, C, A and B, A and C, B and C, and a combination of A and B and C.
[0397] It is also understood that any reference to an element herein using a designation such as "first, " "second, " and so forth does not generally limit the quantity or order of those elements. Rather, these designations can be used herein as a convenient means of distinguishing between two or more elements or instances of an element. Thus, a reference to first and second elements does not mean that only two elements can be employed, or that the first element must precede the second element in some manner.
[0398] Additionally, a person having ordinary skill in the art would understand that information and signals can be represented using any one of a variety of different technologies and techniques. For example, data, instructions, commands, information, signals, bits and symbols, for example, which may be referenced in the above description can be represented by voltages, currents, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any combination thereof.
[0399] A skilled person would further appreciate that any one of the various illustrative logical blocks, units, processors, means, circuits, methods and functions described in connection with the aspects disclosed herein can be implemented by electronic hardware (e.g., a digital implementation, an analog implementation, or a combination of the two) , firmware, various forms of program or design code incorporating instructions (which can be referred to herein, for convenience, as "software" or a "software unit” ) , or any combination of these techniques.
[0400] To clearly illustrate this interchangeability of hardware, firmware and software, various illustrative components, blocks, units, circuits, operations, and steps have been described above generally in terms of their functionality. Whether such functionality is implemented as hardware, firmware or software, or a combination of these techniques, depends upon the particular application and design constraints imposed on the overall system. Skilled artisans can implement the described functionality in various ways for each particular application, but such implementation decisions do not cause a departure from the scope of the present disclosure. In accordance with various embodiments, a processor, device, component, circuit, structure, machine, unit, etc. can be configured to perform one or more of the functions described herein. The term “configured to” or “configured for” as used herein with respect to a specified operation or function refers to a processor, device, component, circuit, structure, machine, unit, etc. that is physically constructed, programmed and / or arranged to perform the specified operation or function.
[0401] Furthermore, a skilled person would understand that various illustrative logical blocks, units, devices, components and circuits described herein can be implemented within or performed by an integrated circuit (IC) that can include a general-purpose processor, a digital signal processor (DSP) , an application specific integrated circuit (ASIC) , a field programmable gate array (FPGA) or other programmable logic device, or any combination thereof. The logical blocks, units, and circuits can further include antennas and / or transceivers to communicate with various components within the network or within the device. A general-purpose processor can be a microprocessor, but in the alternative, the processor can be any conventional processor, controller, or state machine. A processor can also be implemented as a combination of computing devices, e.g., a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a DSP core, or any other suitable configuration to perform the functions described herein. If implemented in software, the functions can be stored as one or more instructions or code on a computer-readable medium. Thus, the steps or operations of a method or algorithm disclosed herein can be implemented as software stored on a computer-readable medium.
[0402] Computer-readable media includes both computer storage media and communication media including any medium that can be enabled to transfer a computer program or code from one place to another. A storage media can be any available media that can be accessed by a computer. By way of example, and not limitation, such computer-readable media can include RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other medium that can be used to store desired program code in the form of instructions or data structures and that can be accessed by a computer.
[0403] In this document, the term "unit" as used herein, refers to software, firmware, hardware, and any combination of these elements for performing the associated functions described herein. Additionally, for purpose of discussion, the various units are described as discrete units; however, as would be apparent to one of ordinary skill in the art, two or more units may be combined to form a single unit that performs the associated functions according to embodiments of the present disclosure.
[0404] Additionally, memory or other storage, as well as communication components, may be employed in embodiments of the present disclosure. It will be appreciated that, for clarity purposes, the above description has described embodiments of the present disclosure with reference to different functional units and processors. However, it will be apparent that any suitable distribution of functionality between different functional units, processing logic elements or domains may be used without detracting from the present disclosure. For example, functionality illustrated to be performed by separate processing logic elements, or controllers, may be performed by the same processing logic element, or controller. Hence, references to specific functional units are only references to a suitable means for providing the described functionality, rather than indicative of a strict logical or physical structure or organization.
[0405] Various modifications to the implementations described in this disclosure will be readily apparent to those skilled in the art, and the general principles defined herein can be applied to other implementations without departing from the scope of the claims. Thus, the disclosure is not intended to be limited to the implementations shown herein, but is to be accorded the widest scope consistent with the novel features and principles disclosed herein, as recited in the claims below.
Claims
1.A wireless communication method comprising:receiving, by a wireless communication terminal from a wireless communication node, a low power wake-up signal, LP-WUS; andperforming, by the wireless communication terminal, a behavior based on the LP-WUS, wherein the behavior comprises waking up, monitoring a control channel and / or starting a timer.2.The wireless communication method of claim 1, wherein the LP-WUS indicates one or more subgroups, and the LP-WUS comprises at least one of:a subgroup state corresponding to the one or more subgroups or corresponding to indexes for the one or more subgroups;a predetermined value; oran offset.3.The wireless communication method of claim 1 or 2, wherein the LP-WUS indicates one or more subgroups via an indication state and the indication state is determined based on at least one of:a maximum number of subgroups per paging occasion, PO;a number of the one or more subgroups;a predetermined value;indexes for the one or more subgroups;an offset; ora subgroup state.4.The wireless communication method of claim 2 or 3, wherein the predetermined value and / or offset is determined based on at least one of:a number of subgroups of the one or more subgroups;a maximum number of subgroups per paging occasion, PO;a number of POs; orindexes for the one or more subgroups.5.The wireless communication method of any of claims 2 to 4 wherein the predetermined value comprises at least one of:X-1 bits set as a first value and one bit set as a second value, wherein X is a positive integer;one bit set as a second value, ora first value or a second value.6.The wireless communication method of any of claims 2 to 5, wherein the subgroup state is determined based on at least one of:a maximum number of subgroups per paging occasion, PO;a number of the one or more subgroups;a predetermined value;indexes for the one or more subgroups; oran offset.7.The wireless communication method of any of claims 2 to 6, wherein the LP-WUS satisfies at least one of:in response to one subgroup state or indication state corresponding to multiple subgroup indexes, the multiple subgroup indexes are continuous;in response to one subgroup state or indication state corresponding to multiple subgroup indexes, the multiple subgroup indexes are distributed with a gap; orin response to one subgroup state or indication state corresponding to multiple subgroup indexes, the multiple subgroup indexes are discontinuous;a maximum number of subgroups per paging occasion and / or a number of POs is configured or indicated by the wireless communication node;a value range of the subgroup state or indication state corresponds to at least one of the number of the one or more subgroups or the indexes for the one or more subgroups;a number of the one or more subgroups indicated by the LP-WUS is 2^m, wherein m is an integer no less than 0;a number of the one or more subgroups indicated by the LP-WUS comprises at least one of {1, 2, 4, 8, 16, 32, 64, 128, 256} and the number is not larger than the maximum number of subgroups for one or more POs; orthe indication state or LP-WUS is no less than 5 bits and no larger than 16 bits.8.The wireless communication method of claim 1, wherein the LP-WUS indicates one or more subgroups, and at least one of the following is satisfied:a maximum number of subgroups per paging occasion are divided into K groups, wherein K is a positive integer;a number of subgroups based on one or more POs are divided into K groups, wherein K is a positive integer;a first group among K groups contains a first number of subgroups, and the other groups among K groups contains a second number of subgroups, wherein K is a positive integer;the LP-WUS indicates one, two, or all of subgroups in one group among K groups; orthe LP-WUS indicates one, two, or all of subgroups in one or more groups among K groups.9.The wireless communication method of any of claims 1 to 8, wherein the LP-WUS is received based on a LP-WUS occasion, LO, and the LO is associated to one or more POs.10.The wireless communication method of any of claims 1 to 9, wherein the LP-WUS comprises an indication state determined by at least one of:a maximum number of subgroups per paging occasion, PO;a number of one or more subgroups;a predetermined value;indexes for one or more subgroups;an offset;a number of the one or more POs; orindexes for the one or more POs.11.The wireless communication method of claim 9 or 10, wherein a number of the one or more POs is configured by System Information Block 1, SIB1, other System Information, OSI, or by the wireless communication node.12.The wireless communication method of any of claims 9 to 11, wherein the LO is associated with M POs and wherein:the LO is associated with a first PO and next M-1 POs, wherein the LO is before the first PO with an offset.13.The wireless communication method of any of claims 1 to 12, wherein the behavior is performed based on one or more offsets, or the LP-WUS is received based on one or more offsets.14.The wireless communication method of claim 13,wherein the offset is defined between a LO and a physical downlink control channel, PDCCH, occasion;wherein the offset is defined between a starting or ending of a LO and a physical downlink control channel, PDCCH, occasion;wherein the offset is defined between a monitoring occasion, MO, of a LO and PDCCH occasion;wherein the offset is defined between a first or last monitoring occasion, MO, of a LO and a PDCCH occasion;wherein the offset is defined between a LO and an associated PDCCH occasion;wherein the offset is defined between an MO of a LO and an associated PDCCH occasion;wherein the offset is defined between an LO and a start of a timer; orwherein the offset is defined between an MO of a LO and a start of a timer.15.The wireless communication method of claim 14,wherein PDCCH occasion comprises a PDCCH occasion for monitoring a paging control channel; orwherein PDCCH occasion comprises a PDCCH occasion for monitoring a control channel provided by a user equipment specific search space, USS, set or a type-3 Common Search Space, CSS, set.16.The wireless communication method of any of claims 13 to 15,wherein the one or more offsets are associated to a same periodicity;wherein the one or more offsets are configured based on one or more LP-WUS monitoring space configurations;wherein the one or more offsets are associated with one or more LP-WUS monitoring space configurations; and / orwherein the one or more offsets are configured in one information element or via SIB1.17.The wireless communication method of claim 16,wherein a monitoring space configuration is a set of configurations, comprising at least one of: an offset, a periodicity, a repetition number, information of time domain resources for the LP-WUS, or information of frequency domain resources for the LP-WUS, a Transmission Configuration Indication, TCI, TCI state or Quasi Co-Location, QCL, information;wherein a monitoring space configuration is configured via an information element; and / orwherein a monitoring space configuration comprises one or more parameter configurations.18.The wireless communication method of any of claims 13 to 17,wherein the wireless communication terminal receives the LP-WUS based on a minimum offset among the one or more offsets which are larger than a wake-up delay of the wireless communication terminal; orwherein the wireless communication terminal receives the LP-WUS based on one or more offsets among the one or more offsets which are larger than a wake-up delay of the wireless communication terminal.19.The wireless communication method of any of claims 1 to 18, wherein a preamble is preceded the LP-WUS, a repeated LP-WUS, or a LO for monitoring the LP-WUS.20.The wireless communication method of claim 19, wherein at least one of the following is satisfied:the preamble preceding the LP-WUS or a repeated LP-WUS or the LO is determined by system information block, SIB, signalling;the preamble comprises binary sequences, and the binary sequences of the preamble are identical to binary sequences of a low power synchronization signal, LP-SS;the preamble comprises binary sequences, and the binary sequences of the preamble are a subset of binary sequences of a LP-SS;the preamble comprises overlaid sequences, and the overlaid sequences of the preamble are identical to overlaid sequences of a LP-SS or the LP-WUS;the preamble comprises overlaid sequences, and the overlaid sequences of the preamble are a subset of overlaid sequences of a LP-SS or the LP-WUS;the preamble has a M value larger than or equal to a M value of a LP-SS or the LP-WUS, and the M value indicates a number of OOK symbols in an Orthogonal Frequency Division Multiplexing, OFDM, symbol, or indicates a OOK symbol length or a number of bits in the OFDM symbol;a number of OOK symbols in an OFDM symbol for the preamble is no less than a number of OOK symbols in an OFDM symbol for a LP-SS or the LP-WUS;a power offset between the preamble and the LP-WUS, a Synchronization Signal / Physical Broadcast Channel Block, SSB, a Cell-Defining SSB, a CD-SSB, or a LP-SS is configured or predetermined;a power for the preamble and at least one of the LP-WUS, an SSB, a CD-SSB, or a LP-SS are assumed as the same;a power offset of the preamble to a Synchronization Signal / Physical Broadcast Channel Block, SSB, is identical to a power offset of the LP-SS to the SSB; ora power offset of the preamble to an SSB is identical to a power offset of the LP-WUS to the SSB.21.The wireless communication method of claim 20, wherein at least one of the following is satisfied:the binary sequences of the preamble comprise OOK-ON or OOK-OFF symbols;the binary sequences of the preamble comprise 0 and 1, or -1 and 1;the overlaid sequences of the preamble are Zadoff Chu, ZC, sequences, m sequences, pseudo noise, PN, sequences or gold sequences;the overlaid sequences of the preamble are scrambled or overlaid on an OOK-ON symbol;the overlaid sequences of the preamble are transmitted based on the preamble, the LP-SS, or the LP-WUS;the M value of the preamble is a multiple of the M value of the LP-SS; orthe M value of the preamble is a multiple of the M value of the LP-WUS.22.The wireless communication method of claim 20 or 21, wherein the power offset or the power is based on an OOK-ON symbol, OOK-OFF symbol, Orthogonal Frequency Division Multiplexing, OFDM, symbol, resource element, RE, or Energy Per Resource Element, EPRE.23.The wireless communication method of any of claims 19 to 22, wherein at least one of the following is satisfied:the preamble and the LP-WUS are in a same slot; orthe preamble and the LP-WUS are in two or more continuous slots.24.The wireless communication method of any of claims 19 to 23, wherein at least one of the following is satisfied:the LO comprises one or more monitoring occasions, MOs;in response to that the preamble is not detected, the wireless communication terminal is not required to monitor the LO after the preamble;the preamble is preceding the LO based on a LP-WUS monitoring space;the preamble is preceding the LO based on an offset;a number of beams of the preamble is identical to a number of beams of the LP-WUS, a LP-SS or an SSB; orthe preamble has a Quasi Co-Location, QCL, relationship with the LP-WUS, a LP-SS or an SSB.25.A wireless communication method comprising:transmitting, by a wireless communication node to a wireless communication terminal, a low power wake-up signal, LP-WUS, to trigger the wireless communication terminal performing a behavior, wherein the behavior comprises waking up, monitoring a control channel and / or starting a timer.26.The wireless communication method of claim 25, wherein the LP-WUS indicates one or more subgroups, and the LP-WUS comprises at least one of:a subgroup state corresponding to the one or more subgroups or corresponding to indexes for the one or more subgroups;a predetermined value; oran offset.27.The wireless communication method of claim 25 or 26, wherein the LP-WUS indicates one or more subgroups via an indication state and the indication state is determined based on at least one of:a maximum number of subgroups per paging occasion, PO;a number of the one or more subgroups;a predetermined value;indexes for the one or more subgroups;an offset; ora subgroup state.28.The wireless communication method of claim 26 or 27, wherein the predetermined value and / or offset is determined based on at least one of:a number of subgroups of the one or more subgroups;a maximum number of subgroups per paging occasion, PO;a number of POs; orindexes for the one or more subgroups.29.The wireless communication method of any of claims 26 to 28 wherein the predetermined value comprises at least one of:X-1 bits set as a first value and one bit set as a second value, wherein X is a positive integer;one bit set as a second value, ora first value or a second value.30.The wireless communication method of any of claims 26 to 29, wherein the subgroup state is determined based on at least one of:a maximum number of subgroups per paging occasion, PO;a number of the one or more subgroups;a predetermined value;indexes for the one or more subgroups; oran offset.31.The wireless communication method of any of claims 26 to 30, wherein the LP-WUS satisfies at least one of:in response to one subgroup state or indication state corresponding to multiple subgroup indexes, the multiple subgroup indexes are continuous;in response to one subgroup state or indication state corresponding to multiple subgroup indexes, the multiple subgroup indexes are distributed with a gap; orin response to one subgroup state or indication state corresponding to multiple subgroup indexes, the multiple subgroup indexes are discontinuous;a maximum number of subgroups per paging occasion and / or a number of POs is configured or indicated by the wireless communication node;a value range of the subgroup state or indication state corresponds to at least one of the number of the one or more subgroups or the indexes for the one or more subgroups;a number of the one or more subgroups indicated by the LP-WUS is 2^m, wherein m is an integer no less than 0;a number of the one or more subgroups indicated by the LP-WUS comprises at least one of {1, 2, 4, 8, 16, 32, 64, 128, 256} and the number is not larger than the maximum number of subgroups for one or more POs; orthe indication state or LP-WUS is no less than 5 bits and no larger than 16 bits.32.The wireless communication method of claim 25, wherein the LP-WUS indicates one or more subgroups, and at least one of the following is satisfied:a maximum number of subgroups per paging occasion are divided into K groups, wherein K is a positive integer;a number of subgroups based on one or more POs are divided into K groups, wherein K is a positive integer;a first group among K groups contains a first number of subgroups, and the other groups among K groups contains a second number of subgroups, wherein K is a positive integer;the LP-WUS indicates one, two, or all of subgroups in one group among K groups; orthe LP-WUS indicates one, two, or all of subgroups in one or more groups among K groups.33.The wireless communication method of any of claims 25 to 32, wherein the LP-WUS is received based on a LP-WUS occasion, LO, and the LO is associated to one or more POs.34.The wireless communication method of any of claims 25 to 33, wherein the LP-WUS comprises an indication state determined by at least one of:a maximum number of subgroups per paging occasion, PO;a number of one or more subgroups;a predetermined value;indexes for one or more subgroups;an offset;a number of the one or more POs; orindexes for the one or more POs.35.The wireless communication method of claim 33 or 34, wherein a number of the one or more POs is configured by System Information Block 1, SIB1, other System Information, OSI, or by the wireless communication node.36.The wireless communication method of any of claims 33 to 35, wherein the LO is associated with M POs and wherein:the LO is associated with a first PO and next M-1 POs, wherein the LO is before the first PO with an offset.37.The wireless communication method of any of claims 25 to 36, wherein the behavior is performed based on one or more offsets, or the LP-WUS is received based on one or more offsets.38.The wireless communication method of claim 37,wherein the offset is defined between a LO and a physical downlink control channel, PDCCH, occasion;wherein the offset is defined between a starting or ending of a LO and a physical downlink control channel, PDCCH, occasion;wherein the offset is defined between a monitoring occasion, MO, of a LO and PDCCH occasion;wherein the offset is defined between a first or last monitoring occasion, MO, of a LO and a PDCCH occasion;wherein the offset is defined between a LO and an associated PDCCH occasion;wherein the offset is defined between an MO of a LO and an associated PDCCH occasion;wherein the offset is defined between an LO and a start of a timer; orwherein the offset is defined between an MO of a LO and a start of a timer.39.The wireless communication method of claim 38,wherein PDCCH occasion comprises a PDCCH occasion for monitoring a paging control channel; orwherein PDCCH occasion comprises a PDCCH occasion for monitoring a control channel provided by a user equipment specific search space, USS, set or a type-3 Common Search Space, CSS, set.40.The wireless communication method of any of claims 37 to 39,wherein the one or more offsets are associated to a same periodicity;wherein the one or more offsets are configured based on one or more LP-WUS monitoring space configurations;wherein the one or more offsets are associated with one or more LP-WUS monitoring space configurations; and / orwherein the one or more offsets are configured in one information element or via SIB1.41.The wireless communication method of claim 40,wherein a monitoring space configuration is a set of configurations, comprising at least one of: an offset, a periodicity, a repetition number, information of time domain resources for the LP-WUS, or information of frequency domain resources for the LP-WUS, a Transmission Configuration Indication, TCI, TCI state or Quasi Co-Location, QCL, information;wherein a monitoring space configuration is configured via an information element; and / or wherein a monitoring space configuration comprises one or more parameter configurations.42.The wireless communication method of any of claims 37 to 41,wherein the wireless communication terminal receives the LP-WUS based on a minimum offset among the one or more offsets which are larger than a wake-up delay of the wireless communication terminal; orwherein the wireless communication terminal receives the LP-WUS based on one or more offsets among the one or more offsets which are larger than a wake-up delay of the wireless communication terminal.43.The wireless communication method of any of claims 25 to 42, wherein a preamble is preceded the LP-WUS, a repeated LP-WUS, or a LO for monitoring the LP-WUS.44.The wireless communication method of claim 43, wherein at least one of the following is satisfied:the preamble preceding the LP-WUS or a repeated LP-WUS or the LO is determined by system information block, SIB, signalling;the preamble comprises binary sequences, and the binary sequences of the preamble are identical to binary sequences of a low power synchronization signal, LP-SS;the preamble comprises binary sequences, and the binary sequences of the preamble are a subset of binary sequences of a LP-SS;the preamble comprises overlaid sequences, and the overlaid sequences of the preamble are identical to overlaid sequences of a LP-SS or the LP-WUS;the preamble comprises overlaid sequences, and the overlaid sequences of the preamble are a subset of overlaid sequences of a LP-SS or the LP-WUS;the preamble has a M value larger than or equal to a M value of a LP-SS or the LP-WUS, and the M value indicates a number of OOK symbols in an Orthogonal Frequency Division Multiplexing, OFDM, symbol, or indicates a OOK symbol length or a number of bits in the OFDM symbol;a number of OOK symbols in an OFDM symbol for the preamble is no less than a number of OOK symbols in an OFDM symbol for a LP-SS or the LP-WUS;a power offset between the preamble and the LP-WUS, a Synchronization Signal / Physical Broadcast Channel Block, SSB, a Cell-Defining SSB, a CD-SSB, or a LP-SS is configured or predetermined;a power for the preamble and at least one of the LP-WUS, an SSB, a CD-SSB, or a LP-SS are assumed as the same;a power offset of the preamble to a Synchronization Signal / Physical Broadcast Channel Block, SSB, is identical to a power offset of the LP-SS to the SSB; ora power offset of the preamble to an SSB is identical to a power offset of the LP-WUS to the SSB.45.The wireless communication method of claim 44, wherein at least one of the following is satisfied:the binary sequences of the preamble comprise OOK-ON or OOK-OFF symbols;the binary sequences of the preamble comprise 0 and 1, or -1 and 1;the overlaid sequences of the preamble are Zadoff Chu, ZC, sequences, m sequences, pseudo noise, PN, sequences or gold sequences;the overlaid sequences of the preamble are scrambled or overlaid on an OOK-ON symbol;the overlaid sequences of the preamble are transmitted based on the preamble, the LP-SS, or the LP-WUS;the M value of the preamble is a multiple of the M value of the LP-SS; orthe M value of the preamble is a multiple of the M value of the LP-WUS.46.The wireless communication method of claim 44 or 45, wherein the power offset or the power is based on an OOK-ON symbol, OOK-OFF symbol, Orthogonal Frequency Division Multiplexing, OFDM, symbol, resource element, RE, or Energy Per Resource Element, EPRE.47.The wireless communication method of any of claims 43 to 46, wherein at least one of the following is satisfied:the preamble and the LP-WUS are in a same slot; orthe preamble and the LP-WUS are in two or more continuous slots.48.The wireless communication method of any of claims 43 to 47, wherein at least one of the following is satisfied:the LO comprises one or more monitoring occasions, MOs;in response to that the preamble is not detected, the wireless communication terminal is not required to monitor the LO after the preamble;the preamble is preceding the LO based on a LP-WUS monitoring space;the preamble is preceding the LO based on an offset;a number of beams of the preamble is identical to a number of beams of the LP-WUS, a LP-SS or an SSB; orthe preamble has a Quasi Co-Location, QCL, relationship with the LP-WUS, a LP-SS or an SSB.49.A wireless communication terminal, comprising:a communication unit; anda processor configured for: receiving, via the communication unit from a wireless communication node, a low power wake-up signal, LP-WUS; and performing a behavior based on the LP-WUS, wherein the behavior comprises waking up, monitoring a control channel and / or starting a timer.50.The wireless communication terminal of claim 49, wherein the processor is further configured to perform a wireless communication method of any of claims 2 to 24.51.A wireless communication node, comprising:a communication unit; anda processor configured for: transmitting, via the communication unit to a wireless communication terminal, a low power wake-up signal, LP-WUS, to trigger the wireless communication terminal performing a behavior, wherein the behavior comprises waking up, monitoring a control channel and / or starting a timer.52.The wireless communication node of claim 51, wherein the processor is further configured to perform a wireless communication method of any of claims 26 to 48.53.A computer program product comprising a computer-readable program medium code stored thereupon, the code, when executed by a processor, causing the processor to implement a wireless communication method recited in any one of claims 1 to 48.
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