WO2024098634A1

WO2024098634A1 - Power saving techniques for communication systems

Info

Publication number: WO2024098634A1
Application number: PCT/CN2023/085179
Authority: WO
Inventors: Youjun HU; Bo Dai; Mengzhu CHEN; Weiwei Yang; Kun Liu; Xiaoying Ma
Original assignee: Zte Corporation
Priority date: 2023-03-30
Filing date: 2023-03-30
Publication date: 2024-05-16

Abstract

Methods and systems for techniques for power saving techniques using low-power wake-up signal (LP-WUS) are disclosed. In an implementation, a method of wireless communication includes monitoring, by a first communication node, a low-power wake-up signal, and performing, by the first communication node, an operation based on the low-power wake-up signal.

Description

POWER SAVING TECHNIQUES FOR COMMUNICATION SYSTEMS

TECHNICAL FIELD

This patent document is directed generally to wireless communications.

BACKGROUND

Mobile communication technologies are moving the world toward an increasingly connected and networked society. The rapid growth of mobile communications and advances in technology have led to greater demand for capacity and connectivity. Other aspects, such as energy consumption, device cost, spectral efficiency, and latency are also important to meeting the needs of various communication scenarios. Various techniques, including new ways to provide higher quality of service, longer battery life, and improved performance are being discussed.

SUMMARY

This patent document describes, among other things, power saving techniques using low-power wake-up signal (LP-WUS) .

In one aspect, a method of data communication is disclosed. The method includes monitoring, by a first communication node, a low-power wake-up signal, and performing, by the first communication node, an operation based on the low-power wake-up signal.

In another aspect, a method of data communication is disclosed. The method includes transmitting, by a second communication node, to a first communication node, a low-power wake-up signal, wherein the low-power wake-up signal causes the first communication node to perform an operation based on the low-power wake-up signal, wherein the low-power wake-up signal is monitored, received, detected or decoded by the first communication node.

In another aspect, a method of data communication is disclosed. The method includes activating, by a wireless device, a first receiver configured to obtain one or more low-power wake-up signals, activating, by the wireless device, a second receiver configured to receive a primary transmission in response to obtaining, from a network device, the one or more low-power wake-up signals through the first receiver, and receiving, by the wireless device, the primary transmission through the second receiver.

In another example aspect, a wireless communication apparatus comprising a processor configured to implement an above-described method is disclosed.

In another example aspect, a computer storage medium having code for implementing an above-described method stored thereon is disclosed.

These, and other, aspects are described in the present document.

BRIEF DESCRIPTION OF THE DRAWING

FIG. 1 shows an example of a wireless communication system based on some example embodiments of the disclosed technology.

FIG. 2 is a block diagram representation of a portion of an apparatus based on some embodiments of the disclosed technology.

FIG. 3 shows an example communication node that includes a low-power wake-up receiver with lower sensitivity and a receiver with higher sensitivity.

FIG. 4 shows example UE behaviors based on some embodiments of the disclosed technology.

FIG. 5 shows example UE behaviors based on some embodiments of the disclosed technology.

FIG. 6 shows an example LP-WUS structure based on some embodiments of the disclosed technology.

FIG. 7 shows another example LP-WUS structure based on some embodiments of the disclosed technology.

FIG. 8 shows another example LP-WUS structure based on some embodiments of the disclosed technology.

FIG. 9 shows another example LP-WUS structure based on some embodiments of the disclosed technology.

FIG. 10 shows an example of a process for wireless communication based on some example embodiments of the disclosed technology.

FIG. 11 shows another example of a process for wireless communication based on some example embodiments of the disclosed technology.

DETAILED DESCRIPTION

Section headings are used in the present document only for ease of understanding and do not limit scope of the embodiments to the section in which they are described. Furthermore, while embodiments are described with reference to 5G examples, the disclosed techniques may be applied to wireless systems that use protocols other than 5G or 3GPP protocols.

FIG. 1 shows an example of a wireless communication system (e.g., a long term evolution (LTE) , 5G or NR cellular network) that includes a BS 120 and one or more user equipment (UE) 111, 112 and 113. In some embodiments, the uplink transmissions (131, 132, 133) can include uplink control information (UCI) , higher layer signaling (e.g., UE assistance information or UE capability) , or uplink information. In some embodiments, the downlink transmissions (141, 142, 143) can include DCI or high layer signaling or downlink information. UE may be, for example, a smartphone, a tablet, a mobile computer, a machine to machine (M2M) device, a terminal, a mobile device, an Internet of Things (IoT) device, and so on.

FIG. 2 is a block diagram representation of a portion of an apparatus based on some embodiments of the disclosed technology. An apparatus 205 such as a network device or a base station or a wireless device (or UE) , can include processor electronics 210 such as a microprocessor that implements one or more of the techniques presented in this document. The apparatus 205 can include transceiver electronics 215 to send and/or receive wireless signals over one or more communication interfaces such as antenna (s) 220. The apparatus 205 can include other communication interfaces for transmitting and receiving data.

Apparatus 205 can include one or more memories (not explicitly shown) configured to store information such as data and/or instructions. In some implementations, the processor electronics 210 can include at least a portion of the transceiver electronics 215. In some embodiments, at least some of the disclosed techniques, modules or functions are implemented using the apparatus 205.

Low-power wake-up signal (LP-WUS) is used for UE power saving. In a connected mode, the current standard is not clear as to how to design and use the LP-WUS. The disclosed technology can be implemented in some embodiments to provide schemes relating to how to enable or disable LP-WUS detection and how to design LP-WUS signals, and to provide related procedure designs for LP-WUS.

Under the current standard, wake-up signal (WUS) is supported. However, the design of the LP-WUS may be quite different from the WUS.

The disclosed technology can be implemented in some embodiments to provide Low Power Signal Design

Embodiment 1: UE does not, or does not need to, monitor, receive, and/or detect a DL signal and/or channel upon detection of, monitoring, receiving, and/or decoding LP-WUS.

(1) In some implementations, UE does not, or does not need to, receive PDCCH when detection LP-WUS in a connected mode. In some implementations, UE does not, or does not need to, receive PDCCH when detection LP-WUS in an idle/inactive mode.

In some implementations, UE does not monitor, receive, and/or detect PDCCH or PDCCH candidate upon detection of LP-WUS in a connected mode.

In some implementations, UE does not monitor, receive, and/or detect PDCCH that is scrambled by a specific RNTI, e.g., C-RNTI upon detection of LP-WUS in a connected mode.

In some implementations, UE does not monitor, receive, and/or detect PDCCH in a USS or CSS, e.g., Type3 CSS, upon detection of LP-WUS in a connected mode.

In some implementations, UE does not monitor, receive, and/or detect a PDCCH format (e.g., DCI format 2-6, DCI format 1-0, 1-1, 1-2, 2-x) upon detection of LP-WUS in a connected mode.

In some implementations, UE does not monitor, receive, and/or detect PDCCH upon detection of LP-WUS in a low power mode. In one example, a low power mode can be based on a high larger parameter configuration.

(2) In some implementations, UE does not, or does not need to, receive PDSCH upon detection of LP-WUS.

In some implementations, UE does not monitor, receive, and/or detect PDSCH upon detection of LP-WUS in a connected mode or a low power mode.

In some implementations, UE does not monitor, receive, and/or detect a selected/specific PDSCH upon detection of LP-WUS in a connected mode.

In some implementations, UE does not monitor, receive, and/or detect a SPS PDSCH upon detection of LP-WUS in a connected mode.

In some implementations, UE does not monitor, receive, and/or detect the semi-static PDSCH, periodic PDSCH, semi-periodic PDSCH upon detection of LP-WUS in a connected mode.

In some implementations, UE does not monitor, receive, and/or detect a PDSCH scheduled and/or activated by a DCI format (e.g., DCI format 1_1 or 1_) upon detection of LP-WUS in a connected mode.

In some implementations, UE does not monitor, receive, and/or detect a PDSCH scheduled and/or activated by a DCI scrambled by a RNTI (e.g., C-RNTI/CS-RNTI/MCS-C-RNTI) upon detection of LP-WUS in a connected mode.

(3) In some implementations, UE does not, or does not need to, receive SSB and/or DL RS upon detection of LP-WUS

In some implementations, UE does not, or does not need to, monitor, receive, and/or detect SSB and/or DL RS upon detection of LP-WUS.

In some implementations, DL RS comprises, PSS, SSS, CSI-RS, PRS, and so on.

(4) After UE receives the LP-WUS, UE monitors DL signals (or channels) and/or LP-WUS.

In some implementations, after UE receives the LP-WUS, UE monitors PDCCH.

In some implementations, after UE receives the LP-WUS, UE monitors PDCCH in another BWP.

In some implementations, after UE receives the LP-WUS, UE monitors PDCCH in another carrier.

In some implementations, after UE receives the LP-WUS, UE monitors CSI-RS or SPS occasion.

In some implementations, after UE receives the LP-WUS, UE monitors PDCCH and LP-WUS.

In some implementations, after UE receives the LP-WUS, UE monitors PDCCH in another BWP and LP-WUS.

In some implementations, after UE receives the LP-WUS, UE monitors PDCCH in another carrier and LP-WUS.

In some implementations, after UE receives the LP-WUS, UE monitors CSI-RS or SPS occasion and LP-WUS.

(5) UE can only monitor, detect, and/or receive the LP-WUS, during the low power mode or based on gNB configuration.

(6) After UE monitor a PDCCH, UE can monitor, detect, and/or receive the LP-WUS and/or other DL signals/channels.

Embodiment 2: UE's behavior when LP-WUS is detected/decoded/received

(1) BWP Switching

In some implementations, when LP-WUS is detected, decoded, and/or received, UE can switch to initial DL BWP, predetermined BWP, e.g., by RRC configuration, or the smallest or largest index, predefined in the specification.

In some implementations, when LP-WUS is detected, decoded, and/or received, UE can set the active DL BWP as initial DL BWP, Predetermined BWP, e.g., by RRC configuration, or smallest or largest index, predefined in spec.

In some implementations, when LP-WUS is detected, decoded, and/or received, UE can switch to a DL BWP indicated by LP-WUS.

In some implementations, when LP-WUS is detected, decoded, and/or received, UE can set the active DL BWP as indicated by LP-WUS.

In some implementations, when LP-WUS is detected, decoded, and/or received, UE can determine the dormant BWP.

In some implementations, when LP-WUS is detected, decoded, and/or received, UE determines the active BWP.

(2) Carrier Switching

In some implementations, when LP-WUS is detected, decoded, and/or received, UE (expect to) monitor PDCCH (candidates) on an active DL BWP of a cell/carrier indicated by LP-WUS.

In some implementations, when LP-WUS is detected, decoded, and/or received, UE does not (expect to) monitor PDCCH (candidates) on an DL BWP of a cell or carrier indicated by LP-WUS.

In some implementations, when LP-WUS is detected, decoded, and/or received, UE determines the dormant SCell, cell, or carrier.

In some implementations, when LP-WUS is detected, decoded, and/or received, UE determines the active SCell, cell, or carrier.

The target SCell, cell, or carrier may be predetermined, e.g., by RRC configuration, or smallest/largest index, predefined in spec, or may be indicated via LP-WUS.

(3) Cross Slot Scheduling

In some implementations, when LP-WUS is detected, decoded, and/or received, UE apply a minimum scheduling offset restriction for PDSCH and/or PUSCH. In one example, a minimum scheduling offset restriction may be predetermined or configured via RRC, e.g., 2 slots.

(4) PDCCH Skipping

In some implementations, when LP-WUS is detected, decoded, and/or received, UE skip PDCCH monitoring for a duration.

In some implementations, when LP-WUS is detected, decoded, and/or received, UE skip the subsequent, rest, or later PDCCH monitoring.

In some implementations, when LP-WUS is detected, decoded, and/or received, UE skip the subsequent, rest, or later PDCCH monitoring in a DRX cycle.

In some implementations, when LP-WUS is detected, decoded, and/or received, UE skip one or multiple times PDCCH monitoring.

In some implementations, when LP-WUS is detected, decoded, and/or received, UE skip one or multiple times PDCCH monitoring in a DRX cycle.

(5) SS Set Switching

In some implementations, when LP-WUS is detected, decoded, and/or received, UE resets PDCCH monitoring according to search space sets indicated by LP-WUS.

In some implementations, when LP-WUS is detected, decoded, and/or received, UE monitor the PDCCH according to search space sets indicated by LP-WUS.

In some implementations, when LP-WUS is detected, decoded, and/or received, UE resets PDCCH monitoring according to search space sets predetermined or predefined, e.g., search space set group 0.

In some implementations, when LP-WUS is detected, decoded, and/or received, UE monitor the PDCCH according to search space sets predetermined or predefined, search space set group 0.

(6) DRX Adjustment

In some implementations, when LP-WUS is detected, decoded, and/or received, UE starts a DRX related timer, e.g., onDurationTimer.

In some implementations, when LP-WUS is detected, decoded, and/or received, UE starts a DRX related timer, e.g., onDurationTimer after a time duration. For example, next slot after the LP-WUS is detected.

In some implementations, when LP-WUS is detected, decoded, and/or received, UE starts a subsequent, following, later, or the most recent DRX duration-on.

In some implementations, when LP-WUS is detected, decoded, and/or received, UE starts a DRX related timer or starts the DRX duration-on according to an offset.

In some implementations, the offset may be defined based on the LP-WUS occasion or resource.

In some implementations, the offset may be defined based on DRX.

In some implementations, the offset may be applied for a time duration.

In some implementations, the offset may be applied for the DRX configuration.

In some implementations, the offset may be applied for the subsequent DRX cycle.

In some implementations, the offset may be applied for one or more DRX cycles.

In some implementations, when LP-WUS is detected, decoded, and/or received, UE terminates a DRX timer or the DRX duration-on, or DRX inactivity timer.

In some implementations, when LP-WUS is detected, decoded, and/or received, UE terminates a DRX timer or the DRX duration-on, or DRX inactivity timer according to an offset.

In some implementations, when LP-WUS is detected, decoded, and/or received, UE terminates PDCCH monitoring or does not need to monitor PDCCH according to an offset.

In some implementations, when LP-WUS is detected, decoded, and/or received, UE terminates PDSCH receiving or does not need to receive PDSCH according to an offset.

In some implementations, when LP-WUS is detected, decoded, and/or received, one DRX configuration or one set of DRX configurations is activated or deactivated. For example, DRX related parameters in The IE DRX-Config is activated or deactivated. For example, DRX-Config is activated or deactivated.

In some implementations, when LP-WUS is detected, decoded, and/or received, a configuration of DRX, a configuration including at least one of periodicity, timer, or offset could be adjusted.

(7) PDSCH/SSB/DL-RS/DL Signal/DL Channel Skipping

In some implementations, when LP-WUS is detected, decoded, and/or received, UE skips one or multiple PDSCH reception.

In some implementations, when LP-WUS is detected, decoded, and/or received, UE skips PDSCH reception for a duration.

In some implementations, when LP-WUS is detected, decoded, and/or received, UE skips PDSCH reception during SPS.

PDSCH can be replaced with SSB, DL-RS, DL signal, and/or DL channel.

When LP-WUS is detected, decoded, and/or received, a SPS/CG occasion is skipped or needs to be received.

When LP-WUS is detected, decoded, and/or received, a SPS/CG configuration is invalid, activated, deactivated, and/or released.

(8) Forbidden PUCCH/PUSCH Sending

When LP-WUS is detected, decoded, and/or received, UE does not, or does not need to, send PUCCH/PUSCH.

When LP-WUS is detected, decoded, and/or received, UE does not, or does not need to, send PUCCH/PUSCH for a duration.

When LP-WUS is detected, decoded, and/or received, UE does not, or does not need to, transmit on a CG occasion.

Embodiment 3: Combine Different Functions for LP-WUS and Configuration

In some implementations, one or more of the above functions or UE behaviors may be supported concurrently.

In one example, for each function, there are one bit or a plurality of bits in LP-

WUS to indicate the corresponding function, and the corresponding UE behaviors may be needed.

In some implementations, the bits in LP-WUS interpretations or functions may be different according to a configuration, e.g., RRC.

For example, 2 bits in LP-WUS can be interpreted as PDCCH skipping if the corresponding RRC parameter is configured.

For example, 2 bits in LP-WUS can be interpreted as DRX adjustment if the corresponding RRC parameter is configured.

In some implementations, the length of the bits in LP-WUS may be different according to configuration, e.g., RRC.

For example, 2bits in LP-WUS can be used to indicate PDCCH skipping if the corresponding RRC parameter is configured.

For example, 2 bits for PDCCH skipping and 2 bits for DRX adjustment can be used if the corresponding RRC parameter (e.g., two parameters) is configured.

For example, the LP-WUS may indicate BWP switching, cross slot scheduling, and/or DRX adjustment, with N bits.

For example, the LP-WUS may indicate BWP switching, cross slot scheduling,

PDCCH skipping, and/or DRX adjustment, with N+M1 bits.

For example, the LP-WUS may indicate BWP switching, cross slot scheduling, PDCCH skipping, SS set switching, and/or DRX adjustment, with N+M1+M2bits.

For example, the more functions are enabled by LP-WUS, the more bits are carried by LP-WUS.

In some implementations, LP-WUS indicates that UE starts the timer for DRX and start the PDCCH monitoring.

In some implementations, LP-WUS indicates that UE skips a PDCCH occasion.

In some implementations, LP-WUS indicates that UE can terminates the DRX timer and stops PDCCH monitoring.

In some implementations, UE does not, or does not need to, monitor, receive, and/or detect PDCCH upon detection of LP-WUS.

In some implementations, UE starts the PDCCH monitoring after receiving the LP-WUS.

In some implementations, UE stops the DRX timer after receiving the LP-WUS indicating that.

In some implementations, the low-power wake-up signal includes a first low-power wake-up signal and/or a second low-power wake-up signal, wherein the method further comprises at least one of:

monitoring the first low-power wake-up signal in a first bandwidth part (BWP) , and monitoring the second low-power wake-up signal in a second BWP;

monitoring the first low-power wake-up signal in a first carrier, and monitoring the second low-power wake-up signal in a second carrier;

monitoring the first low-power wake-up signal in a first cell, and monitoring the second low-power wake-up signal in a second cell;

monitoring the first low-power wake-up signal in a first band, and monitoring the second low-power wake-up signal in a second band; or

monitoring the first low-power wake-up signal in a first radio access technology (RAT) , and monitoring the second low-power wake-up signal in a second RAT.

Monitoring LP-WUS in the first BWP, carrier, cell, band, and/or RAT and monitoring LP-WUS in the second BWP, carrier, cell, band, and/or RAT may happen at the same time or different times. Moreover, the first BWP, carrier, cell, band, and/or RAT may be identical to the second BWP, carrier, cell, band, and/or RAT.

In some implementations, monitoring the low-power wake-up signal in at least one of a first BWP, a first carrier, a first cell, or a first band, a RAT; and performing the operation in at least one of a second BWP, a second carrier, a second cell, or a second band, a RAT. monitoring and performing could be in different BWP, carrier, cell, band, and/or RAT.

In some implementations, monitoring LP-WUS in one BWP, carrier, cell, band, and/or RAT, performing the operations in multiple BWP, carrier, cell, band, and/or RAT. The operations could be the same or different.

Embodiment 4: LP-WUS Structure and Payload Size

In some implementations, carried information via LP-WUS includes N bits, where N is determined according to the configuration.

In some implementations, carried information via LP-WUS includes N bits, where N is less than or equal to 10, e.g., 1, 2, 4, 8 bits.

In one example, N is applied to one UE.

(1) The position for monitoring LP-WUS in a time domain or a frequency domain is obtained or determined according to a UE's identity (ID) .

In some implementations, the frequency position for monitoring LP-WUS is obtained according to a UE's ID, wherein UE's ID may be UE-ID, the ID configured by gNB, RNTI or any other value, the value for UE's ID is assumed to be “D. ”

For example, N is the PRB number in the BWP and x is N mod D, and therefore it is UE with ID “D” monitoring LP-WUS at a frequency position x (x is a PRB number, x belongs to N) .

For example, N also can be RBG number, or another number for a defined frequency resource unit

In some implementations, the position for monitoring LP-WUS in a time domain is obtained or determined according to a UE's ID.

For example, N is the slot number in the BWP, and x is N mod D, and therefore, it is UE with ID “D” monitoring LP-WUS at slot x in a time domain (x is a slot number, x belongs to N) .

For example, N can be a symbol number, a frame number, or another number for a defined time resources unit.

In some implementations, the position for monitoring LP-WUS in a time domain and a frequency domain is obtained or determined according to a UE's ID.

(2) The resource pool for LP-WUS is configured via RRC.

In some implementations, different UEs may have different resource pools.

In some implementations, the resource pool includes a number of PRBs, a bandwidth, and a BWP configuration.

In some implementations, UE can monitor, detect, decode, and/or receive the LP-WUS based on the resource pool.

In some implementations, UE can monitor, detect, decode, and/or receive the LP-WUS based on the resource pool, where the resource pool is related to UE's ID or configured via RRC for one UE.

(3) Different configurations and/or functions has different structures and/or formats of LP-WUS.

In some implementations, different functions have different structures and/or formats of LP-WUS.

In some implementations, different configurations can have different structures and/or formats of LP-WUS.

In some implementations, the supported functions can have a mapping relationship with the structure and/or format.

Table 1

(4) Payload structure for group WUS.

For each block, the size may be less than 10 bits.

Structure 1:

In some implementations, structure 1 only comprises preambles wherein different preambles activate different functions.

For UE, after UE receives the preambles, different preambles have different UE behaviors.

For example, preamble 1 is used to indicate the DRX activation.

For example, preamble 2 is used to indicate the PDCCH skipping.

For example, preamble 3 is used to indicate the BWP switching.

For example, preamble 4 is used to indicate the DRX deactivation.

Here, preambles 1-4 may be one preamble, or may be a number of preambles.

Structure 2:

In some implementations, structure 2 comprises preambles, at least one block for UE, and the CRC attachment or preamble attachment.

In some implementations, the preambles indicate the format or structure for LP-WUS/block.

In some implementations, the preambles indicate the function or size for LP-

WUS/block.

In some implementations, for each UE detecting its own LP-WUS/block, it is based on RRC configuration.

In some implementations, each block has the same size.

Structure 3:

In some implementations, structure 3 comprises preambles, a short sequence (or a short sequence part) (702) , at least one block for UE, and the CRC attachment or preamble attachment.

In some implementations, the preamble is used for sync or measurement.

In some implementations, the short sequence part (702) indicates format or structure or functions or size for LP-WUS/Block.

In some implementations, the short sequence part (702) indicates UE's ID or part of UE's ID.

In some implementations, the short sequence part (702) is related to UE's ID or part of UE's ID.

In some implementations, each block has the same size.

In some implementations, the short sequence (702) can be related to power allocation for LP-WUS, or the information indicated by the short sequence (702) is related and/or based on power allocation.

In some implementations, the short sequence (702) can be related to control information for LP-WUS, or the information indicated by the short sequence (702) is related and/or based on the control information for LP-WUS. The control information comprises indicating which function is enabled.

In some implementations, the preamble comprises the control information, where control information comprises indicating which function is enabled.

In some implementations, control information comprises the format for LP-WUS.

Structure 4: Insert one or more short sequences before each block of LP-WUS

In some implementations, structure 4 comprises preambles, at least one short sequence (802, 804) for UE, at least one block for UE, and the CRC attachment or preamble attachment.

In some implementations, the preamble is used for sync or measurement.

In some implementations, the at least one short sequence (802, 804) indicates format or structure or functions or size for LP-WUS/block.

In some implementations, the at least one short sequence (802, 804) indicates UE's ID or part of UE's ID

In some implementations, the at least one short sequence (802, 804) is related to UE's ID or part of UE's ID.

In some implementations, each block has the same size or different blocks have different sizes.

In some implementations, the at least one short sequence (802, 804) can be related to power allocation for LP-WUS, or the information indicated by the at least one short sequence (802, 804) is related and/or based on power allocation.

In some implementations, the at least one short sequence (802, 804) can be related to control information for LP-WUS, or the information indicated by the at least one short sequence (802, 804) is related and/or based on the control information for LP-WUS. The control information comprises indicating which function is enabled.

The preamble comprises the control information, where control information comprises indicating which function is enabled.

In some implementations, control information comprises the format for LP-WUS.

Structure 5: Attach a short sequence or CRC after each block

In some implementations, structure 5 comprises preambles, at least one block for UE, at least one short sequence or CRC bits (902, 904) for UE, and the CRC attachment or preamble attachment.

In some implementations, the short sequence and/or short CRC bits part (902, 904) indicates UE's ID or part of UE's ID, or is related to UE's ID or part of UE's ID, or the information indicated by this short sequence/CRC bits is related/based on UE's ID.

In some implementations, the short sequence has shorter length than the first or last preamble.

In some implementations, the short CRC bits has shorter length than the last CRC attachment.

In some implementations, LP-WUS for a UE has its own CRC, and the whole structure includes a CRC or preamble.

In some implementations, the short sequence can be related to power allocation for LP-WUS, or the information indicated by The short sequence is related and/or based on power allocation.

In some implementations, the short sequence can be related to control information for LP-WUS, or the information indicated by this short sequence is related and/or based on the control information for LP-WUS. The control information comprises indicating which function is enabled.

In some implementations, control information comprises the format for LP-WUS.

Embodiment 5: UE Behavior for Monitoring LP-WUS

In some implementations, after receiving the RRC configuration, UE keeps monitoring LP-WUS.

In some implementations, after receiving the RRC configuration, UE monitors LP-WUS based on configured duration/LP-WUS occasion.

In some implementations, before DRX, UE monitors the LP-WUS.

In some implementations, before DRX, UE monitors the LP-WUS in a time duration.

In some implementations, before DRX duration-on, UE monitors the LP-WUS in a time duration.

In some implementations, after DRX timer starts, UE monitors the LP-WUS in a time duration.

In some implementations, UE monitors the LP-WUS from the DRX timer starts.

In some implementations, after a timer, e.g., InactivityTimer, expires, UE monitors the LP-WUS.

In some implementations, after a timer, e.g., InactivityTimer, expires, UE monitors the LP-WUS in a time duration.

In some implementations, after a timer, e.g., InactivityTimer, expires a time duration, UE monitors the LP-WUS.

In some implementations, after a CG-SPS, UE monitors LP-WUS.

In some implementations, after a CG/SPS occasion, UE monitors LP-WUS.

In some implementations, before PDCCH monitoring, UE monitors LP-WUS.

In some implementations, after UE receives a DL signal, e.g., SSB, PDCCH,

PDSCH, UE monitors LP-WUS.

In some implementations, after an event, e.g., measurement or others, UE monitors LP-WUS.

In some implementations, after UE transmits ACK, NACK, PUCCH, and/or PUSCH, UE does not monitor LP-WUS.

In some implementations, after UE receives PDCCH and/or PDSCH, UE does not monitor LP-WUS.

In some implementations, after a time duration, UE monitors LP-WUS.

In some implementations, after a time duration by PDCCH skipping, UE monitors LP-WUS.

In some implementations, after RRC is enabled, LP-WUS monitoring is “always-on. ”

In one example, LP-WUS monitoring includes duty cycle monitoring.

In one example, LP-WUS monitoring includes listening for a period of time before DRX-duration on.

In one example, LP-WUS monitoring is performed for a duration after “onz. ”

In one example, LP-WUS monitoring starts from “off. ” In one example, LP-WUS monitoring starts after a period of time has passed since “off. ”

In one example, LP-WUS monitoring is enabled after or before a CG/SPS occasion of CG/SPS.

In one example, LP-WUS monitoring starts from an occasion of CG/SPS

In one example, LP-WUS monitoring starts before PDCCH

In one example, LP-WUS monitoring includes event-based trigger LP-WUS monitoring, such as SSB, PDCCH, PDSCH.

In one example, after the UE sends PUCCH/NACK/ACK, it no longer detects LP-WUS.

In one example, after detecting PDCCH and/or PDSCH, there is no need to detect LP-WUS.

In one example, after the UE detects the SSB, it starts LP-WUS monitoring.

In one example, after the duration of PDCCH SKIPPING ends, LP-WUS monitoring or detection is turned on.

Embodiment 6: Power Allocation

In some implementations, the power allocation for LP-WUS is obtained based on SSB power.

In some implementations, the power allocation for LP-WUS is obtained via an offset based on SSB power.

In some implementations, the power allocation for LP-WUS is configured via RRC parameter or SIB.

In some implementations, the power allocation for LP-WUS is the same with LP-SS.

Embodiment 7: QCL Relationship or Beam

In some implementations, the LP-WUS is quasi co-located (QCL-ed) with an SSB.

In some implementations, the LP-WUS is QCL-ed with a CSI-RS.

In some implementations, the LP-WUS is QCL-ed with a PDCCH.

In some implementations, the LP-WUS is QCL-ed with an LP-SS.

In some embodiments of the disclosed technology, gNB sends and/or UE monitors or receives the low power wake-up signal, and UE behaves according to the LP-WUS.

In some embodiments of the disclosed technology, UE does not, or does not need to, monitor, receive, and/or detect a DL signal and/or channel when monitoring LP-WUS.

In some embodiments of the disclosed technology, UE performs specific operations when monitoring LP-WUS.

In some embodiments of the disclosed technology, UE performs specific operations when receiving LP-WUS.

LP-WUS design including structures implemented based on some embodiments of the disclosed technology can be used.

In some implementations, the process 1000 for wireless communication may include, at 1010, monitoring, by a first communication node, a low-power wake-up signal, and at 1020, performing, by the first communication node, an operation based on the low-power wake-up signal.

In some implementations, an example of a process for wireless communication may include activating, by a wireless device, a first receiver configured to obtain one or more low-power wake-up signals, activating, by the wireless device, a second receiver configured to receive a primary transmission in response to obtaining, from a network device, the one or more low-power wake-up signals through the first receiver, and receiving, by the wireless device, the primary transmission through the second receiver.

In some implementations, the process 1100 for wireless communication may include, at 1110, transmitting, by a second communication node, to a first communication node, a low-power wake-up signal, wherein the low-power wake-up signal causes the first communication node to perform a first operation based on the low-power wake-up signal, wherein the low-power wake-up signal is monitored, received, detected or decoded by the first communication node.

It will be appreciated that the present document discloses techniques that can be embodied in various embodiments to determine downlink control information in wireless networks. The disclosed and other embodiments, modules and the functional operations described in this document can be implemented in digital electronic circuitry, or in computer software, firmware, or hardware, including the structures disclosed in this document and their structural equivalents, or in combinations of one or more of them. The disclosed and other embodiments can be implemented as one or more computer program products, i.e., one or more modules of computer program instructions encoded on a computer readable medium for execution by, or to control the operation of, data processing apparatus. The computer readable medium can be a machine-readable storage device, a machine-readable storage substrate, a memory device, a composition of matter effecting a machine-readable propagated signal, or a combination of one or more them. The term “data processing apparatus” encompasses all apparatus, devices, and machines for processing data, including by way of example a programmable processor, a computer, or multiple processors or computers. The apparatus can include, in addition to hardware, code that creates an execution environment for the computer program in question, e.g., code that constitutes processor firmware, a protocol stack, a database management system, an operating system, or a combination of one or more of them. A propagated signal is an artificially generated signal, e.g., a machine-generated electrical, optical, or electromagnetic signal, that is generated to encode information for transmission to suitable receiver apparatus.

A computer program (also known as a program, software, software application, script, or code) can be written in any form of programming language, including compiled or interpreted languages, and it can be deployed in any form, including as a stand-alone program or as a module, component, subroutine, or other unit suitable for use in a computing environment. A computer program does not necessarily correspond to a file in a file system. A program can be stored in a portion of a file that holds other programs or data (e.g., one or more scripts stored in a markup language document) , in a single file dedicated to the program in question, or in multiple coordinated files (e.g., files that store one or more modules, sub programs, or portions of code) . A computer program can be deployed to be executed on one computer or on multiple computers that are located at one site or distributed across multiple sites and interconnected by a communication network.

The processes and logic flows described in this document can be performed by one or more programmable processors executing one or more computer programs to perform functions by operating on input data and generating output. The processes and logic flows can also be performed by, and apparatus can also be implemented as, special purpose logic circuitry, e.g., an FPGA (field programmable gate array) or an ASIC (application specific integrated circuit) .

Processors suitable for the execution of a computer program include, by way of example, both general and special purpose microprocessors, and any one or more processors of any kind of digital computer. Generally, a processor will receive instructions and data from a read only memory or a random-access memory or both. The essential elements of a computer are a processor for performing instructions and one or more memory devices for storing instructions and data. Generally, a computer will also include, or be operatively coupled to receive data from or transfer data to, or both, one or more mass storage devices for storing data, e.g., magnetic, magneto optical disks, or optical disks. However, a computer need not have such devices. Computer readable media suitable for storing computer program instructions and data include all forms of non-volatile memory, media and memory devices, including by way of example semiconductor memory devices, e.g., EPROM, EEPROM, and flash memory devices; magnetic disks, e.g., internal hard disks or removable disks; magneto optical disks; and CD ROM and DVD-ROM disks. The processor and the memory can be supplemented by, or incorporated in, special purpose logic circuitry.

Some embodiments may preferably implement one or more of the following solutions, listed in clause-format. The following clauses are supported and further described in the embodiments above and throughout this document. As used in the clauses below and in the claims, a wireless device may be user equipment, mobile station, or any other wireless terminal including fixed nodes such as base stations. A network device includes a base station including a next generation Node B (gNB) , enhanced Node B (eNB) , or any other device that performs as a base station.

Clause 1. A method of wireless communication, comprising: monitoring, by a first communication node, a low-power wake-up signal; and performing, by the first communication node, an operation based on the low-power wake-up signal.

Clause 2. The method of clause 1, wherein the monitoring of the low-power wake-up signal includes monitoring, receiving, detecting or decoding the low-power wake-up signal.

Clause 3. The method of clause 1, wherein the operation includes processing one or more primary signals.

Clause 4. The method of clause 3, wherein the operation includes processing one or more primary signals, wherein each of the one or more primary signals includes corresponding low-power wake-up signals, or different primary signals correspond to one low-power wake-up signal, or wherein processing each of the one or more primary signals includes corresponding low-power wake-up signals, or processing different primary signals corresponds to one low-power wake-up signal.

Clause 5. The method of clause 3, wherein the processing one or more primary signals comprises at least one of skipping, monitoring, releasing, activating, or deactivating the primary signals.

In some implementations, skipping the primary signals comprises: a first communication node does not or does not need to monitor/receive/detect the DL signals; a first communication node Does not or does not need to send/transmit the UL signals; a first communication node is not required to monitor/receive/detect the DL signals or send/transmit the UL signals; a first communication node skip to monitor/receive/detect the DL signals or send/transmit the UL signals; a first communication node skip the DL signals or the UL signals.

Clause 6. The method of clause 5, wherein the one or more primary signals include at least one of a downlink (DL) signal or an uplink (UL) signal, wherein: the DL signal comprises at least one of a physical downlink control channel (PDCCH) , a physical downlink shared channel (PDSCH) , a synchronization signal block (SSB) , or a down link reference signal (DL-RS) ; and the UL signal comprises at least one of a physical random access channel (PRACH) , physical uplink control channel (PUCCH) , or a physical uplink shared channel (PUSCH) .

Clause 7. The method of clause 6, wherein the PDCCH includes at least one of a PDCCH candidate, a PDCCH scrambled by specific radio network temporary identifier (RNTI) , a PDCCH in a first communication node specific search space (USS) or common search space (CSS) , a PDCCH occasion, a search space for PDCCH , or a PDCCH format, wherein the PDSCH includes at least one of a semi-persistent scheduling (SPS) PDSCH, a PDSCH with SPS, a PDSCH occasion, PDSCH scheduled or activated by a downlink control information (DCI) format, or a PDSCH scheduled or activated by a DCI scrambled by a RNTI, or a PDSCH configured by radio resource control (RRC) , wherein the DL-RS includes a primary synchronization signal (PSS) , a secondary synchronization signal (SSS) , a channel state information reference signal (CSI-RS) , a demodulation reference signal (DMRS) , or a positioning reference signal (PRS) .

Clause 8. The method of clause 5, wherein the skipping the primary signals includes at least one of: skipping one or more PDCCH monitoring occasions for a duration; skipping one or more PDCCH monitoring occasions in a discontinuous reception (DRX) cycle; skipping at least one PDSCH; skipping at least one PDSCH for a time duration; skipping at least one PDSCH during an SPS transmission; skipping at least one SPS PDSCH for a duration; skipping one or more configured grant (CG) PUSCHs or occasions; or activating, deactivating, or releasing at least one SPS configuration, at least one SPS PDSCH, at least one CG configuration, or at least one CG PUSCH occasion.

In some implementations, activating, deactivating, or releasing at least one SPS configuration comprises activating, deactivating, or releasing at least one of the configured SPS configurations in a BWP of a serving cell or configured SPS configurations in a cell group, including separate RRC parameters and separate activation/release for different SPS configurations. It is similar for the CG configuration.

Clause 9. The method of clause 1, wherein the low-power wake-up signal includes a first low-power wake-up signal or a second low-power wake-up signal, wherein the method further comprises at least one of: monitoring the first low-power wake-up signal in a first bandwidth part (BWP) , and monitoring the second low-power wake-up signal in a second BWP; monitoring the first low-power wake-up signal in a first carrier, and monitoring the second low-power wake-up signal in a second carrier; monitoring the first low-power wake-up signal in a first cell, and monitoring the second low-power wake-up signal in a second cell; monitoring the first low-power wake-up signal in a first band, and monitoring the second low-power wake-up signal in a second band; or monitoring the first low-power wake-up signal in a first radio access technology (RAT) , and monitoring the second low-power wake-up signal in a second RAT.

Clause 10. The method of clause 1 or 9, wherein the operation includes a first operation or a second operation, wherein the method further comprises at least one of: performing the first operation in a first bandwidth part (BWP) , and performing the second operation in a second BWP; performing the first operation in a first carrier, and performing the second operation in a second carrier; performing the first operation in a first cell, and performing the second operation in a second cell; performing the first operation in a first band, and performing the second operation in a second band; or performing the first operation in a first RAT, and performing the second operation in a second RAT.

In some implementations, the first operation may be different from or the same as the second operation.

Clause 11. The method of clause 1, further comprising: monitoring the low-power wake-up signal in at least one of a first BWP, a first carrier, a first cell, a first band, or a first RAT; and performing the operation in at least one of a second BWP, a second carrier, a second cell, a second band, or a second RAT.

Clause 12. The method of any of clauses 9-11, where the first BWP, the first carrier, the first cell, the first band, and the first RAT are identical to the second BWP, the second carrier, the second cell, the second band, and the second RAT, respectively.

Clause 13. The method of any of clauses 9-11, where the first BWP, the first carrier, the first cell, the first band, and the first RAT are different from the second BWP, the second carrier, the second cell, the second band, and second RAT, respectively.

Clause 14. The method of any of clauses 1-13, further comprising monitoring, by a first communication node, the low-power wake-up signal while the first communication node is in a connected mode, in a low power mode or based on a configuration received from a second communication node.

In some implementations, the first communication node comprises the UE and the second communication node comprises at least one of the network (NW) , relay, or repeater.

Clause 15. The method of clause 1, wherein the operation includes at least one of:switching a BWP; switching a carrier or cell; switching a search space (SS) set; performing a scheduling operation; adjusting a discontinuous reception (DRX) ; or switching a RAT.

Clause 16. The method of clause 15, wherein the switching the BWP includes at least one of: switching to an initial DL BWP or a BWP by an RRC configuration or a predefined BWP; setting an active DL BWP from an initial DL BWP or a BWP by the RRC configuration or a predetermined BWP; switching to a downlink bandwidth part (DL BWP) , an active DL BWP, or a dormant BWP; setting the active DL BWP; determining a dormant BWP; determining an active BWP; or activating or deactivating at least one BWP.

Clause 17. The method of clause 15, wherein the switching the carrier or cell includes at least one of: monitoring PDCCH or PDCCH candidate on an active DL BWP of a cell or carrier; determining a dormant cell or carrier; determining an active cell or carrier; determining a target cell or carrier; activating or deactivating at least one cell or carrier; or activating at least one cell or carrier and deactivating at least another one cell or carrier.

Clause 18. The method of clause 15, wherein the performing the scheduling operation includes at least of: applying a scheduling restriction for at least one of PDSCH or physical uplink shared channel (PUSCH) ; or applying a minimum scheduling offset restriction for at least one of PDSCH or PUSCH.

Clause 19. The method of clause 15, wherein the switching the SS set includes at least one of: resetting PDCCH monitoring according to SS sets; monitoring PDCCH according to SS sets; resetting PDCCH monitoring according to predetermined SS sets; monitoring PDCCH according to predetermined SS sets; activating or deactivating an SS set; or activating an SS set and deactivating another SS set.

Clause 20. The method of clause 15, wherein the adjusting the DRX includes at least one of: activating or deactivating at least one DRX configuration or one set of DRX configurations; adjusting a configuration of DRX, a configuration including at least one of periodicity, timer, or offset; starting at least one of timer, active time, or inactive time; or terminating at least one of timer, active time, or inactive time.

In some implementations, the adjusting the DRX includes starting a DRX related timer; starting a DRX active time; starting a DRX related timer with a time duration; starting a subsequent DRX duration; starting a DRX related timer with a shortened time frame; starting the DRX related timer or starting the DRX active time according to an offset; starting a DRX inactive time; terminating a DRX related timer or a DRX active time, or a DRX inactivity timer; terminating a DRX related timer according to an offset or a time duration; terminating PDCCH monitoring according to an offset or a time duration in a DRX active time; terminating PDSCH reception according to an offset or a time duration in a DRX active time; adjusting or starting one or more DRX cycles in advance with an offset or a time duration; or adjusting a periodicity of DRX. In some implementations, DRX related timer at least includes DRX inactivity timer and DRX onDuration Timer.

Clause 21. The method of any of clauses 1-20, wherein the low-power wake-up signal includes one or more bits for indicating functions of the first communication node to be performed.

Clause 22. The method of clause 21, wherein the functions of the first communication node include one or more functions to be performed by first communication node or one or more combinations of the one or more functions to be performed by first communication node.

Clause 23. The method of clause 21, wherein the functions of the first communication node include different functions corresponding to different operations of the first communication node.

Clause 24. The method of clause 21 or 23, wherein a number of bits of the one or more bits for indicating the functions of the first communication node is determined based on RRC configuration.

Clause 25. The method of clause 23 or 24, wherein an interpretation for a number of bits of the one or more bits for indicating the functions of the first communication node is determined based on RRC configurations or conditions, or an interpretation for a number of bits of the one or more bits for indicating the functions of the first communication node is different according to different RRC configurations or conditions.

Clause 26. The method of any of clauses 1-20, wherein a time domain position or a frequency domain position for monitoring the low-power wake-up signal is obtained based on an identity of the first communication node or one or more resource pools, wherein the identity of the first communication node includes an identity of the first communication node configured by the second communication node, an RNTI, a physical layer cell identity, or a value, wherein the one or more resource pools include a plurality of physical resource blocks (PRBs) or a plurality of continuous PRBs.

Clause 27. The method of clause 1, wherein the low-power wake-up signal comprises at least one of: a preamble part, wherein the preamble part comprises at least one preamble; one or more indications; one or more blocks, wherein each block comprises at least one bit or each block is for at least one first communication node; or cyclic redundancy check (CRC) or preamble attachment.

Clause 28. The method of clause 27, wherein the one or more indications comprise at least one of: an indication including at least a sequence; an indication including a number of CRC bits; an indication including at least one bit; an indication applied to one or more blocks; an indication applied to a subsequent block; an indication applied to a previous block, or an indication applied to one first communication node.

Clause 29. The method of clause 1 or 27, wherein the low-power wake-up signal includes one or more preambles, wherein the one or more preambles correspond to functions of the first communication node.

Clause 30. The method of clause 1 or 27, wherein the low-power wake-up signal includes one or more preambles, at least one block for each first communication node, and a cyclic redundancy check (CRC) attachment or preamble attachment.

Clause 31. The method of clause 1 or 27, wherein the low-power wake-up signal includes one or more preambles, at least one indication, at least one block for each first communication node, and a cyclic redundancy check (CRC) attachment or preamble attachment.

Clause 32. The method of clause 1 or 27, wherein the low-power wake-up signal includes one or more preambles, at least one indication for each block or a first communication node, at least one block for each first communication node, and a cyclic redundancy check (CRC) attachment or preamble attachment.

Clause 33. The method of clause 1 or 27, wherein the low-power wake-up signal includes one or more preambles, at least one block for each first communication node, at least one indication for each block or each first communication node, and a cyclic redundancy check (CRC) attachment or preamble attachment.

Clause 34. The method of any of clauses 31-33, wherein the at least one indication indicates at least one of: a structure; a format; a function; a size of a block; a size of the low-power wake-up signal; an operation, or a starting or ending position of a block.

Clause 35. The method of clause 1, further comprising monitoring, by the first communication node, the low-power wake-up signal after a receipt of an RRC configuration; a start of DRX related timer; an expiration of a timer; a CG or SPS occasion; a receipt of a DL signal; or a receipt of a positive or negative acknowledgement message, a PUCCH, or a PUSCH; a time duration; or a time duration by PDCCH skipping.

Clause 36. The method of clause 1, further comprising monitoring, by the first communication node, the low-power wake-up signal before a DRX related timer starts, a DRX active time, or a PDCCH monitoring occasion.

Clause 37. The method of clause 1, wherein a power allocation for the low-power wake-up signal based on at least one of: an SSB power; an offset of the SSB power; an RRC parameter; or a system information block (SIB) .

Clause 38. The method of clause 1, wherein the low-power wake-up signal is quasi-co-located with at least one of: an SSB; a CSI-RS; PDSCH, or a PDCCH, or a low power synchronization signal (LP-SS) , wherein the LP-SS is a signal configured with at least one of a periodicity, a window, an offset, or an association with SSB.

Clause 39. A method of wireless communication, comprising: transmitting, by a second communication node, to a first communication node, a low-power wake-up signal, wherein the low-power wake-up signal causes the first communication node to perform an operation based on the low-power wake-up signal, wherein the low-power wake-up signal is monitored, received, detected or decoded by the first communication node.

Clause 40. The method of clause 39, wherein the operation includes processing one or more primary signals.

Clause 41. The method of clause 39, wherein the low-power wake-up signal includes a first low-power wake-up signal or a second low-power wake-up signal, wherein the method further comprises at least one of: monitoring the first low-power wake-up signal in a first bandwidth part (BWP) , and monitoring the second low-power wake-up signal in a second BWP; monitoring the first low-power wake-up signal in a first carrier, and monitoring the second low-power wake-up signal in a second carrier; monitoring the first low-power wake-up signal in a first cell, and monitoring the second low-power wake-up signal in a second cell; monitoring the first low-power wake-up signal in a first band, and monitoring the second low-power wake-up signal in a second band; or monitoring the first low-power wake- up signal in a first radio access technology (RAT) , and monitoring the second low-power wake-up signal in a second RAT.

Clause 42. The method of clause 39 or 41, wherein the operation includes a first operation or a second operation, wherein the method further comprises at least one of: performing the first operation in a first bandwidth part (BWP) , and performing the second operation in a second BWP; performing the first operation in a first carrier, and performing the second operation in a second carrier; performing the first operation in a first cell, and performing the second operation in a second cell; performing the first operation in a first band, and performing the second operation in a second band; or performing the first operation in a first RAT, and performing the second operation in a second RAT.

Clause 43. The method of clause 39, wherein the operation includes at least one of:switching a BWP; switching a carrier or cell; switching a search space (SS) set; performing a scheduling operation; adjusting a discontinuous reception (DRX) ; or switching a RAT.

Clause 44. The method of any of clauses 1 to 43, wherein the first communication node includes a wireless device, and the second communication node includes a network node.

Clause 45. An apparatus for wireless communication comprising a processor that is configured to carry out the method of any of clauses 1 to 44.

Clause 46. A non-transitory computer readable medium having code stored thereon, the code when executed by a processor, causing the processor to implement a method recited in any of clauses 1 to 44.

Some of the embodiments described herein are described in the general context of methods or processes, which may be implemented in one embodiment by a computer program product, embodied in a computer-readable medium, including computer-executable instructions, such as program code, executed by computers in networked environments. A computer-readable medium may include removable and non-removable storage devices including, but not limited to, Read Only Memory (ROM) , Random Access Memory (RAM) , compact discs (CDs) , digital versatile discs (DVD) , etc. Therefore, the computer-readable media can include a non-transitory storage media. Generally, program modules may include routines, programs, objects, components, data structures, etc. that perform particular tasks or implement particular abstract data types. Computer-or processor-executable instructions, associated data structures, and program modules represent examples of program code for executing steps of the methods disclosed herein. The particular sequence of such executable instructions or associated data structures represents examples of corresponding acts for implementing the functions described in such steps or processes.

Some of the disclosed embodiments can be implemented as devices or modules using hardware circuits, software, or combinations thereof. For example, a hardware circuit implementation can include discrete analog and/or digital components that are, for example, integrated as part of a printed circuit board. Alternatively, or additionally, the disclosed components or modules can be implemented as an Application Specific Integrated Circuit (ASIC) and/or as a Field Programmable Gate Array (FPGA) device. Some implementations may additionally or alternatively include a digital signal processor (DSP) that is a specialized microprocessor with an architecture optimized for the operational needs of digital signal processing associated with the disclosed functionalities of this application. Similarly, the various components or sub-components within each module may be implemented in software, hardware or firmware. The connectivity between the modules and/or components within the modules may be provided using any one of the connectivity methods and media that is known in the art, including, but not limited to, communications over the Internet, wired, or wireless networks using the appropriate protocols.

While this document contains many specifics, these should not be construed as limitations on the scope of an invention that is claimed or of what may be claimed, but rather as descriptions of features specific to particular embodiments. Certain features that are described in this document in the context of separate embodiments can also be implemented in combination in a single embodiment. Conversely, various features that are described in the context of a single embodiment can also be implemented in multiple embodiments separately or in any suitable sub-combination. Moreover, although features may be described above as acting in certain combinations and even initially claimed as such, one or more features from a claimed combination can in some implementations be excised from the combination, and the claimed combination may be directed to a sub-combination or a variation of a sub-combination. Similarly, while operations are depicted in the drawings in a particular order, this should not be understood as requiring that such operations be performed in the particular order shown or in sequential order, or that all illustrated operations be performed, to achieve desirable results.

Only a few implementations and examples are described and other implementations, enhancements and variations can be made based on what is described and illustrated in this disclosure.

Claims

A method of wireless communication, comprising:

monitoring, by a first communication node, a low-power wake-up signal; and

performing, by the first communication node, an operation based on the low-power wake-up signal.
The method of claim 1, wherein the monitoring of the low-power wake-up signal includes monitoring, receiving, detecting or decoding the low-power wake-up signal.
The method of claim 1, wherein the operation includes processing one or more primary signals.
The method of claim 3, wherein the operation includes processing one or more primary signals,

wherein each of the one or more primary signals includes corresponding low-power wake-up signals, or different primary signals correspond to one low-power wake-up signal, or

wherein processing each of the one or more primary signals includes corresponding low-power wake-up signals, or processing different primary signals corresponds to one low-power wake-up signal.
The method of claim 3, wherein the processing one or more primary signals comprises at least one of skipping, monitoring, releasing, activating, or deactivating the primary signals.
The method of claim 3 or 5, wherein the one or more primary signals include at least one of a downlink (DL) signal or an uplink (UL) signal, wherein:

the DL signal comprises at least one of a physical downlink control channel (PDCCH) , a physical downlink shared channel (PDSCH) , a synchronization signal block (SSB) , or a down link reference signal (DL-RS) ; and

the UL signal comprises at least one of a physical random access channel (PRACH) , physical uplink control channel (PUCCH) , or a physical uplink shared channel (PUSCH) .
The method of claim 6, wherein the PDCCH includes at least one of a PDCCH candidate, a PDCCH scrambled by specific radio network temporary identifier (RNTI) , a PDCCH in a first communication node specific search space (USS) or common search space (CSS) , a PDCCH occasion, a search space for PDCCH , or a PDCCH format, wherein the PDSCH includes at least one of a semi-persistent scheduling (SPS) PDSCH, a PDSCH with SPS, a PDSCH occasion, PDSCH scheduled or activated by a downlink control information (DCI) format, or a PDSCH scheduled or activated by a DCI scrambled by a RNTI, or a PDSCH configured by radio resource control (RRC) , wherein the DL-RS includes a primary synchronization signal (PSS) , a secondary synchronization signal (SSS) , a channel state information reference signal (CSI-RS) , a demodulation reference signal (DMRS) , or a positioning reference signal (PRS) .
The method of claim 5, wherein the skipping the primary signals includes at least one of:

skipping one or more PDCCH monitoring occasions for a duration;

skipping a subsequent PDCCH monitoring occasion;

skipping one or more PDCCH monitoring occasions in a discontinuous reception (DRX) cycle;

skipping at least one PDSCH;

skipping at least one PDSCH for a time duration;

skipping at least one PDSCH during an SPS transmission;

skipping at least one SPS PDSCH for a duration;

skipping one or more configured grant (CG) PUSCHs or occasions; or

activating, deactivating, or releasing at least one SPS configuration, at least one SPS PDSCH, at least one CG configuration, or at least one CG PUSCH occasion.
The method of claim 1, wherein the low-power wake-up signal includes a first low-power wake-up signal or a second low-power wake-up signal, wherein the method further comprises at least one of:

monitoring the first low-power wake-up signal in a first bandwidth part (BWP) , and monitoring the second low-power wake-up signal in a second BWP;

monitoring the first low-power wake-up signal in a first carrier, and monitoring the second low-power wake-up signal in a second carrier;

monitoring the first low-power wake-up signal in a first cell, and monitoring the second low-power wake-up signal in a second cell;

monitoring the first low-power wake-up signal in a first band, and monitoring the second low-power wake-up signal in a second band; or

monitoring the first low-power wake-up signal in a first radio access technology (RAT) , and monitoring the second low-power wake-up signal in a second RAT.
The method of claim 1 or 9, wherein the operation includes a first operation or a second operation, wherein the method further comprises at least one of:

performing the first operation in a first bandwidth part (BWP) , and performing the second operation in a second BWP;

performing the first operation in a first carrier, and performing the second operation in a second carrier;

performing the first operation in a first cell, and performing the second operation in a second cell;

performing the first operation in a first band, and performing the second operation in a second band; or

performing the first operation in a first RAT, and performing the second operation in a second RAT.
The method of claim 1, further comprising:

monitoring the low-power wake-up signal in at least one of a first BWP, a first carrier, a first cell, a first band, or a first RAT; and

performing the operation in at least one of a second BWP, a second carrier, a second cell, a second band, or a second RAT.
The method of any of claims 9-11, where the first BWP, the first carrier, the first cell, the first band, and the first RAT are identical to the second BWP, the second carrier, the second cell, the second band, and the second RAT, respectively.
The method of any of claims 9-11, where the first BWP, the first carrier, the first cell, the first band, and the first RAT are different from the second BWP, the second carrier, the second cell, the second band, and second RAT, respectively.
The method of any of claims 1-13, further comprising monitoring, by a first communication node, the low-power wake-up signal while the first communication node is in a connected mode, in a low power mode or based on a configuration received from a second communication node.
The method of claim 1, wherein the operation includes at least one of:

switching a BWP;

switching a carrier or cell;

switching a search space (SS) set;

performing a scheduling operation;

adjusting a discontinuous reception (DRX) ; or

switching a RAT.
The method of claim 15, wherein the switching the BWP includes at least one of:

switching to an initial DL BWP or a BWP by an RRC configuration or a predefined BWP;

setting an active DL BWP from an initial DL BWP or a BWP by the RRC configuration or a predetermined BWP;

switching to a downlink bandwidth part (DL BWP) , an active DL BWP, or a dormant BWP;

setting the active DL BWP;

determining a dormant BWP;

determining an active BWP; or

activating or deactivating at least one BWP.
The method of claim 15, wherein the switching the carrier or cell includes at least one of:

monitoring PDCCH or PDCCH candidate on an active DL BWP of a cell or carrier;

determining a dormant cell or carrier;

determining an active cell or carrier;

determining a target cell or carrier;

activating or deactivating at least one cell or carrier; or

activating at least one cell or carrier and deactivating at least another one cell or carrier.
The method of claim 15, wherein the performing the scheduling operation includes at least of:

applying a scheduling restriction for at least one of PDSCH or physical uplink shared channel (PUSCH) ; or

applying a minimum scheduling offset restriction for at least one of PDSCH or PUSCH.
The method of claim 15, wherein the switching the SS set includes at least one of:

resetting PDCCH monitoring according to SS sets;

monitoring PDCCH according to SS sets;

resetting PDCCH monitoring according to predetermined SS sets;

monitoring PDCCH according to predetermined SS sets;

activating or deactivating an SS set; or

activating an SS set and deactivating another SS set.
The method of claim 15, wherein the adjusting the DRX includes at least one of:

activating or deactivating at least one DRX configuration or one set of DRX configurations;

adjusting a configuration of DRX, a configuration including at least one of periodicity, timer, or offset;

starting at least one of timer, active time, or inactive time; or

terminating at least one of timer, active time, or inactive time.
The method of any of claims 1-20, wherein the low-power wake-up signal includes one or more bits for indicating functions of the first communication node to be performed.
The method of claim 21, wherein the functions of the first communication node include one or more functions to be performed by first communication node or one or more combinations of the one or more functions to be performed by first communication node.
The method of claim 21, wherein the functions of the first communication node include different functions corresponding to different operations of the first communication node.
The method of claim 21 or 23, wherein a number of bits of the one or more bits for indicating the functions of the first communication node is determined based on RRC configuration.
The method of claim 23 or 24, wherein an interpretation for a number of bits of the one or more bits for indicating the functions of the first communication node is determined based on RRC configurations or conditions, or an interpretation for a number of bits of the one or more bits for indicating the functions of the first communication node is different according to different RRC configurations or conditions.
The method of any of claims 1-20, wherein a time domain position or a frequency domain position for monitoring the low-power wake-up signal is obtained based on an identity of the first communication node or one or more resource pools, wherein the identity of the first communication node includes an identity of the first communication node configured by the second communication node, an RNTI, a physical layer cell identity, or a value, wherein the one or more resource pools include a plurality of physical resource blocks (PRBs) or a plurality of continuous PRBs.
The method of claim 1, wherein the low-power wake-up signal comprises at least one of:

a preamble part, wherein the preamble part comprises at least one preamble;

one or more indications;

one or more blocks, wherein each block comprises at least one bit or each block is for at least one first communication node; or

cyclic redundancy check (CRC) or preamble attachment.
The method of claim 27, wherein the one or more indications comprise at least one of:an indication including at least a sequence; an indication including a number of CRC bits; an indication including at least one bit; an indication applied to one or more blocks; an indication applied to a subsequent block; an indication applied to a previous block, or an indication applied to one first communication node.
The method of claim 1 or 27, wherein the low-power wake-up signal includes one or more preambles, wherein the one or more preambles correspond to functions of the first communication node.
The method of claim 1 or 27, wherein the low-power wake-up signal includes one or more preambles, at least one block for each first communication node, and a cyclic redundancy check (CRC) attachment or preamble attachment.
The method of claim 1 or 27, wherein the low-power wake-up signal includes one or more preambles, at least one indication, at least one block for each first communication node, and a cyclic redundancy check (CRC) attachment or preamble attachment.
The method of claim 1 or 27, wherein the low-power wake-up signal includes one or more preambles, at least one indication for each block or a first communication node, at least one block for each first communication node, and a cyclic redundancy check (CRC) attachment or preamble attachment.
The method of claim 1 or 27, wherein the low-power wake-up signal includes one or more preambles, at least one block for each first communication node, at least one indication for each block or each first communication node, and a cyclic redundancy check (CRC) attachment or preamble attachment.
The method of any of claims 31-33, wherein the at least one indication indicates at least one of: a structure; a format; a function; a size of a block; a size of the low-power wake-up signal; an operation, or a starting or ending position of a block.
The method of claim 1, further comprising monitoring, by the first communication node, the low-power wake-up signal after a receipt of an RRC configuration; a start of DRX related timer; an expiration of a timer; a CG or SPS occasion; a receipt of a DL signal; or a receipt of a positive or negative acknowledgement message, a PUCCH, or a PUSCH; a time duration; or a time duration by PDCCH skipping.
The method of claim 1, further comprising monitoring, by the first communication node, the low-power wake-up signal before a DRX related timer starts, a DRX active time, or a PDCCH monitoring occasion.
The method of claim 1, wherein a power allocation for the low-power wake-up signal based on at least one of: an SSB power; an offset of the SSB power; an RRC parameter; or a system information block (SIB) .
The method of claim 1, wherein the low-power wake-up signal is quasi-co-located with at least one of: an SSB; a CSI-RS; PDSCH, or a PDCCH, or a low power synchronization signal (LP-SS) , wherein the LP-SS is a signal configured with at least one of a periodicity, a window, an offset, or an association with SSB.
A method of wireless communication, comprising:

transmitting, by a second communication node, to a first communication node, a low-power wake-up signal,

wherein the low-power wake-up signal causes the first communication node to perform an operation based on the low-power wake-up signal,

wherein the low-power wake-up signal is monitored, received, detected or decoded by the first communication node.
The method of claim 39, wherein the operation includes processing one or more primary signals.
The method of claim 39, wherein the low-power wake-up signal includes a first low-power wake-up signal or a second low-power wake-up signal, wherein the method further comprises at least one of:

monitoring the first low-power wake-up signal in a first bandwidth part (BWP) , and monitoring the second low-power wake-up signal in a second BWP;

monitoring the first low-power wake-up signal in a first carrier, and monitoring the second low-power wake-up signal in a second carrier;

monitoring the first low-power wake-up signal in a first cell, and monitoring the second low-power wake-up signal in a second cell;

monitoring the first low-power wake-up signal in a first band, and monitoring the second low-power wake-up signal in a second band; or

monitoring the first low-power wake-up signal in a first radio access technology (RAT) , and monitoring the second low-power wake-up signal in a second RAT.
The method of claim 39 or 41, wherein the operation includes a first operation or a second operation, wherein the method further comprises at least one of:

performing the first operation in a first bandwidth part (BWP) , and performing the second operation in a second BWP;

performing the first operation in a first carrier, and performing the second operation in a second carrier;

performing the first operation in a first cell, and performing the second operation in a second cell;

performing the first operation in a first band, and performing the second operation in a second band; or

performing the first operation in a first RAT, and performing the second operation in a second RAT.
The method of claim 39, wherein the operation includes at least one of:

switching a BWP;

switching a carrier or cell;

switching a search space (SS) set;

performing a scheduling operation;

adjusting a discontinuous reception (DRX) ; or

switching a RAT.
The method of any of claims 1 to 43, wherein the first communication node includes a wireless device, and the second communication node includes a network node.
An apparatus for wireless communication comprising a processor that is configured to carry out the method of any of claims 1 to 44.
A non-transitory computer readable medium having code stored thereon, the code when executed by a processor, causing the processor to implement a method recited in any of claims 1 to 44.