CN113396638A

CN113396638A - Low power consumption cellular radio terminal

Info

Publication number: CN113396638A
Application number: CN201980091078.XA
Authority: CN
Inventors: 李立广; 徐俊; 陈梦竹; 马骁颖; 许进
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2019-02-02
Filing date: 2019-02-02
Publication date: 2021-09-14
Anticipated expiration: 2039-02-02
Also published as: WO2020155166A1; CN113396638B

Abstract

In one aspect, a method of wireless communication is described. The method comprises sending configuration signalling from a first wireless terminal to a second wireless terminal; and transmitting a respective signal to the second wireless terminal, wherein the respective signal is based on the configuration signaling. In various embodiments, the respective signal comprises a periodic signal comprising at least one of: SSB (synchronization signal block), secondary synchronization signal, primary synchronization signal.

Description

Low power consumption cellular radio terminal

Technical Field

This patent document relates generally to wireless communications.

Background

Mobile communication technology is making the world advance towards an increasingly connected and networked society. The rapid growth of mobile communications and advances in technology have resulted in greater demands for capacity, connectivity, and reliability. Other aspects such as energy consumption, equipment cost, spectral efficiency and latency are also important to meet the needs of various communication scenarios. Various techniques are being discussed, including new methods to provide higher quality of service, longer battery life, and improved performance.

Disclosure of Invention

Methods, systems, apparatuses, and computer-readable media related to wireless communications are disclosed herein, and in particular, methods and apparatuses for reducing power consumption of a user equipment are disclosed.

In one aspect, a method of wireless communication is disclosed. The method comprises sending configuration signalling from a first wireless terminal to a second wireless terminal; and transmitting a respective signal to the second wireless terminal, wherein the respective signal is based on the configuration signaling.

In another aspect, a method of wireless communication is disclosed. The method comprises the second wireless terminal receiving configuration signalling from the first wireless terminal; and receiving a corresponding signal from the first wireless terminal, wherein the corresponding signal is based on the configuration signaling.

The details of one or more implementations are set forth in the accompanying drawings, the drawings, and the description below. Other features will be apparent from the description and drawings, and from the claims.

Drawings

FIG. 1 depicts an example of a system according to some example embodiments;

fig. 2 depicts an example of an apparatus according to some example embodiments;

FIG. 3 depicts an example of a process according to some example embodiments;

fig. 4A depicts another example of a process according to some example embodiments;

fig. 4B depicts another example of a process according to some example embodiments;

FIG. 5 depicts an example of cross-slot scheduling according to some example embodiments;

fig. 6 depicts an example of a time gap between a wake-up signal and an "on-duration" state, according to some example embodiments;

fig. 7 depicts an example of the timing of an incoming sleep signal, according to some example embodiments;

fig. 8 depicts an example of periodic monitoring of a Physical Downlink Control Channel (PDCCH) according to some example embodiments;

fig. 9 depicts an example of a process for configuring parameters with User Equipment (UE) assistance information, in accordance with some example embodiments;

fig. 10 depicts an example of a process for configuring parameters with UE assistance information through Downlink Control Information (DCI) according to some example embodiments;

fig. 11 depicts an example of a process for configuring parameters with UE assistance information by Radio Resource Control (RRC), according to some example embodiments;

fig. 12 depicts an example of a process for configuring parameters with UE assistance information by a media access control-control element (MAC-CE), according to some example embodiments;

fig. 13 depicts an example of a process for a wake-up signal (WUS or WUP) with Discontinuous Reception (DRX) operation (DRX configuration) according to some example embodiments;

fig. 14 depicts an example of a process for a WUS (or WUP) signal with PDCCH monitoring configuration (search space configuration) according to some example embodiments;

fig. 15 depicts an example of a process for configuration of a periodic signal, according to some example embodiments; and

fig. 16 depicts an example of a process for trigger state or configuration of a preparation period, according to some example embodiments.

Detailed Description

The section headings are used herein only for improving readability, and not to limit the scope of the embodiments and techniques disclosed in each section to only that section.

In NR (new radio) communication systems, the power consumption of the UE may be very high due to the increased level of computational complexity of the implementation, and also due to the amount of data that the UE may generate or consume. Since the UE is directly related to the user's experience, the large power consumption of the UE results in an undesirable user experience. In the existing 5G communication system, the configuration parameters of the UE are generally configured by a network side device, for example, a base station. Parameters configured by the network side device may not be able to adapt quickly to instantaneous traffic changes. In the case where the configuration parameters are not based on traffic updates or reconfigurations, the parameters may configure the UE to have the adverse effect of unnecessarily increasing power consumption.

In 5G New Radio (NR) communication systems, the power consumption of the User Equipment (UE) may be high, resulting in a less satisfactory user experience. In current systems, some UE parameters are configured by the base station or network, which may accommodate regular traffic. However, current systems are not able to accommodate rapid changes in flow. The configuration parameters are not necessarily traffic dependent, which may lead to unnecessary power consumption. Techniques for configuring parameters in a UE to reduce power consumption are disclosed.

The configuration parameters include time domain parameters, frequency domain parameters, and spatial domain parameters. Typically, after the UE receives the capability query, the UE reports its capability information to the base station and the network. The UE capability information includes parameter values associated with maximum capabilities supported by the UE, including time domain processing capabilities, frequency domain processing capabilities, and Multiple Input Multiple Output (MIMO) processing capabilities. And after the base station acquires the UE capability information, configuring UE parameters and scheduling the UE according to a scheduling algorithm and a channel state. Techniques are disclosed for configuring a UE to perform ultra-low latency communication, ultra-reliable communication, large-scale machine type communication (mtc), and enhanced mobile broadband (eMBB), while conserving power at the UE. Otherwise, the UE may unnecessarily waste power.

In some example embodiments, the base station obtains configuration parameters from the UE and configures the UE to enter the energy saving state according to one or more preset parameters. The configuration parameters include at least one of: a slot offset threshold, a number of slots, a power saving signal, a reference signal, carrier aggregation/dual connectivity activation/deactivation, an RRC parameter, or a MAC-CE parameter.

The UE configuration parameters comprise: frequency, time, antenna domain, and other parameters. The UE reports its capability information to the base station after receiving a UE capability query from the base station. And after receiving the UE capability information, the base station configures parameters for the UE according to the scheduling strategy and the channel state information and schedules communication resources.

In some example embodiments, the base station sets the UE to a power saving state, so the UE may adapt to different traffic conditions in order to save power. For example, when UE parameters are configured for ultra-reliable low latency communication (URLLC) without reconfiguration of the parameters, unnecessary power consumption may occur at the UE when switching to use in eMBB.

The disclosed technology provides embodiments and examples of parameter configuration for power saving in wireless communications. Some embodiments of the disclosed technology provide techniques to prevent or reduce unnecessary power consumption of a UE by configuring the UE to conserve power.

Fig. 1 shows an example of a wireless communication system (e.g., a 5G or NR cellular network) including a BS 120 and one or

more UEs

111, 112, and 113. In some example embodiments, a User Equipment (UE) accesses BS 120 (also referred to herein as a network or gNB) using

configuration messages

131, 132, 133 communicated to BS 120 from UEs 111, 112, and 113, respectively, to enable subsequent communication to the UE via

messages

141, 142, 143. The UE may be, for example, a smartphone, a cellular phone, a tablet, a mobile computer, a machine-to-machine (M2M) device, an internet of things (IoT) device, or any other wirelessly connected computing device.

Fig. 2 illustrates an example of an apparatus according to some example embodiments. An apparatus 210, such as base station 120 or a wireless device, such as

UE

111, 112, and/or 113, may include processor electronics 220, such as a microprocessor, that implements one or more features disclosed herein. The apparatus 210 may include transceiver electronics 230 to transmit and/or receive wireless signals over one or more communication interfaces, such as an antenna 240. The apparatus 210 may include other communication interfaces for sending and receiving data. The apparatus 210 may include one or more memories (not explicitly shown) configured to store information such as data and/or executable instructions. In some embodiments, processor electronics 220 may include at least a portion of transceiver electronics 230. In some embodiments, at least some of the disclosed techniques, modules, or functions are implemented using the apparatus 210.

Fig. 3 shows a process for configuring parameters of a UE. The configured parameters may include parameters such as time domain parameters, frequency domain parameters, spatial domain, and the like. As shown in fig. 3, a network side device (e.g., a base station) first sends a UE capability query to a UE. After receiving the capability query of the network side device, the UE reports its capability information, which may be referred to as UE capability information. Parameter values related to the maximum UE capability are included in UE capability information including time domain processing capability, frequency domain processing capability, and MIMO processing capability. After receiving the UE capability information, the network configures the UE with configuration parameters based on the scheduling policy and the channel state information. However, some configuration parameter values may result in unnecessary power consumption. For example, parameter values for configuring a UE to perform URLLC may result in unnecessary power consumption when used in eMBB. When the UE is operating at low data traffic (e.g., low data rate), parameter values for large data traffic (e.g., high data rate) may result in unnecessary power consumption. The disclosed technology provides a parameter configuration scheme to prevent or reduce unnecessary power consumption and to achieve power saving at the UE. In some example embodiments, the UE may adapt to different traffic to reduce power consumption.

The techniques and methods for parameter configuration disclosed herein may be applied to a new radio access technology (NR) communication system, an LTE mobile communication system, a fifth generation (5G) mobile communication system, or other wireless/wired communication systems. The techniques or methods may be performed at a network-side device, such as a base station. In some embodiments, a base station may include at least one of an Access Point (AP), a node B, a Radio Network Controller (RNC), an evolved node B (eNB or gNB), a Base Station Controller (BSC), a Base Transceiver Station (BTS), a Base Station (BS), a Transceiver Function (TF), a wireless router, a wireless transceiver, a basic service unit, an extended service unit, a Radio Base Station (RBS), or some other terminology.

Fig. 4A illustrates an example of a process according to some example embodiments. For example, a base station such as a gNB configures the procedures of a UE (e.g., a first wireless terminal may be a gNB and a second wireless terminal may be a UE). At 410, the base station sends configuration signaling to the UE. The one or more configuration parameters are associated with configuration signaling. At 420, based on the configuration signaling, the gNB performs transmission with the UE (sends a corresponding signal to the UE). In some embodiments, the configuration signaling may include at least one of: a slot offset threshold configuration, a configuration of a power saving signal, a configuration of a reference signal, a configuration of activation/deactivation of carrier aggregation/dual connectivity, a DRX parameter, a RRC parameter, and/or a MAC-CE parameter. The parameters at 410 are detailed below.

The slot offset threshold configuration may include a slot offset threshold. The slot offset threshold may comprise at least one of the following parameters: a Physical Downlink Shared Channel (PDSCH) slot offset threshold, a Physical Uplink Shared Channel (PUSCH) slot offset threshold, a PDSCH-to-hybrid automatic repeat request (HARQ) slot offset threshold, an aperiodic channel state information reference signal (CSI-RS) slot offset threshold, a PDSCH decoding time threshold, a PUSCH preparation time threshold, and a Channel State Information (CSI) calculation delay threshold.

The power saving signal may include: a wake-up signal and/or a go-to-sleep (go-to-sleep) signal.

The reference signal may include at least one of: a tracking reference signal, a Synchronization Signal Block (SSB) reference signal, a secondary synchronization signal, a primary synchronization signal, or a CSI reference signal.

The configuration of carrier aggregation/dual connectivity (CA/DC) activation/deactivation may be determined by scheduling Downlink Control Information (DCI). The scheduling DCI may include at least one of: DCI format 0_0, DCI format 0_1, DCI format 1_0, and DCI format 1_ 1. Since HARQ (ACK/NACK) must be reported to the gNB for PDSCH scheduled by the scheduling DCI, the UE and the gNB have the same understanding of the state of CA/DC, and thus the UE may reduce some power consumption.

The Radio Resource Control (RRC) parameter may include at least one of: a Physical Downlink Control Channel (PDCCH) monitoring period, a search space, or a CSI request.

Fig. 4B illustrates an example of a communication configuration scheme for a wireless terminal (e.g., UE) based on the disclosed technology. As shown in fig. 4B, at 430, the UE receives configuration signaling from the base station. At 440, based on the configuration signaling, the UE performs transmission with the gNB (or receives a corresponding signal). The configuration signaling may include at least one of the following parameters: a time slot offset threshold configuration, a configuration of a power saving signal, a configuration of a reference signal, a configuration of activation/deactivation of carrier aggregation/dual connectivity, an RRC parameter, or a MAC-CE parameter.

Discontinuous Reception (DRX) may be used to reduce User Equipment (UE) power consumption. In DRX, the base station (or gnnodeb or gNB) configures the UE with a DRX cycle. The configuration signaling includes DRX parameters. During each DRX cycle, the UE monitors a Physical Downlink Control Channel (PDCCH) at a predetermined time, and if the UE detects a signal on the PDCCH, the UE enters an active state and performs transmission and reception of data and control information. Otherwise, the UE remains in an inactive state (does not monitor the PDCCH). In an inactive state of the user equipment, a portion of the transmit, receive, and/or processing circuitry may be turned off to reduce power consumption.

The disclosed technology provides various parameter configurations for configuration signaling to achieve power savings at the UE by including different parameters obtained for the gNB. Embodiments are also provided for conserving power via processing at the UE.

In some example embodiments, the configuration signaling comprises a slot offset threshold configuration. The transmission information associated with the slot offset threshold configuration may include a slot offset threshold. The slot offset threshold may include one or more of: a Physical Downlink Shared Channel (PDSCH) slot offset threshold, a Physical Uplink Shared Channel (PUSCH) slot offset threshold, a PDSCH to hybrid automatic repeat request (HARQ) slot offset threshold, an aperiodic channel state information reference signal (CSI-RS) slot offset threshold, a PDSCH decode time threshold, a PUSCH preparation time threshold, or a Channel State Information (CSI) computation delay threshold.

Example 1

In this embodiment for the gNB, the configuration signaling at 410 is a slot offset threshold configuration. The transmission information associated with the slot offset threshold configuration includes a slot offset threshold. The slot offset threshold is determined by the gNB. The slot offset threshold is the minimum slot offset within the gNB that can be used for scheduling (grant). If the gNB configures the UE with a slot offset threshold, the gNB will schedule a slot offset that is greater than or equal to the slot offset threshold. For example, if the list of slot offset values is 0246, then the slot offset 246 may be used for scheduling when the slot offset threshold is equal to 2, and for example, the slot offset 46 may be used for scheduling when the slot offset threshold is equal to 4, and for example, the slot offset in the list of slot offset values must be greater than or equal to the slot offset threshold. For example, the slot offset threshold is equal to 4 and the minimum value in the list of slot offset values is greater than or equal to 4. If data traffic of the URLLC service is transmitted, the slot offset threshold is equal to 0 or the slot offset threshold is disabled. In other cases, the slot offset threshold is an integer greater than 0, e.g., equal to 1, 2, 3, 4, 6, 8, 10, 12, or 16. If the slot offset threshold is greater than 0, it is referred to as "cross-slot scheduling". During the slot offset, the UE may go to sleep (e.g., microsleep or light sleep) as soon as possible after receiving the last Orthogonal Frequency Division Multiplexing (OFDM) symbol of the PDCCH, and power consumption may be reduced.

As another example, the slot offset threshold may be determined by one of the following parameters: a bandwidth part (BWP) configuration, a BWP index, or a cell configuration. For example, if the BWP is configured as an initial BWP or a default BWP or a power-saving BWP, the slot offset threshold may be greater than 0, e.g., 1, 2, 3, 4, 6 or 8, e.g., if the BWP index is equal to 0 or the BWP index is equal to 1, the slot offset threshold is greater than 0, e.g., 1, 2, 3, 4, 6 or 8, the initial Downlink (DL) BWP being defined by the position and number of consecutive Physical Resource Blocks (PRBs) starting from a PRB having a lowest index among PRBs in a control resource set for a Type0-PDCCH common search space and ending at a PRB having a highest index, and the subcarrier spacing and cyclic prefix for PDCCH reception in the control resource set for the Type0-PDCCH common search space. The initial DL BWP may also be provided by higher layer parameters such as initialldownlinlnkbwp. For a dedicated BWP configuration, a first DL BWP for reception may be provided to the UE by a high layer parameter, firstActiveDownlinkBWP-Id, and a first UL BWP for transmission on the primary cell may be provided to the UE by a high layer parameter, firstActiveUplinkBWP-Id. Among the configured DL BWPs, the default DL BWP may be configured by a higher layer parameter such as defaultDownlinkBWP-Id, or it may also be defined as an initial DL BWP. In a configured BWP, the power-efficient BWP has a minimum bandwidth. In some embodiments, CSI measurements and periodic CSI reports may be made for low power BWPs and uplink or downlink grants may be allowed. Some instant messaging applications (e.g., WeChat) send or receive small data payloads. Due to its very small bandwidth, power-efficient BWPs can be used with very low power consumption. In an example of power-saving BWP, the bandwidth is one of 1.25MHz, 2.5MHz, or 5 MHz. In another example of a power-saving BWP, its bandwidth is the smallest among the configured BWPs. For example, the bandwidth of the configured BWP is {5MHz, 10MHz, 15MHz, 20MHz }, and the bandwidth of the power-saving BWP is set to 5 MHz.

As another example, if the serving cell is configured as an inactive cell, or the serving cell is configured as an inactive cell or as a dormant cell, the slot offset threshold is greater than 0, e.g., 1, 2, 3, 4, 6, or 8. As another example, the slot offset threshold of the initial BWP or the default BWP or the power-saving BWP is greater than the slot offset threshold of the dedicated BWP, e.g., the slot offset threshold of the initial BWP or the default BWP is 2 (or 4), and the slot offset threshold of the dedicated BWP is 0 (or 1). If the dormant secondary cell (SCell) state is deactivated, the UE does not have to perform any measurements or operations on the SCell. When the SCell is in a dormant state, the UE may perform Channel Quality Indicator (CQI) measurements and reporting, albeit at a very sparse periodicity. The transition from the dormant state to the active state is still much shorter than the transition from the deactivated state to the active state.

As another example, the slot offset threshold for an inactive cell or a dormant cell is greater than the slot offset threshold for an active cell, such as 2, 4, or 8 for the inactive cell or the dormant cell and 0 or 1 for the active cell.

As another example, the slot offset threshold may be determined by: UE assistance information and a time domain configuration list. Fig. 9 shows a process for utilizing configuration parameters of UE assistance information. As shown in fig. 9, the network device first sends a UE assistance information query to the UE. After receiving the assistance information query from the network side device, the UE reports its preferred configuration parameters (UE assistance information) to the gNB. After receiving the UE preferred configuration parameters (UE assistance information), the network configures the UE with the configuration parameters based on the UE assistance information. The UE assistance information includes at least one of: preferred slot offset threshold, preferred slot offset index, differential slot offset threshold. The preferred slot offset threshold in the UE assistance information is one value in the time domain configuration list. For example, all slot offsets in the time domain configuration list are defined as {0, 1, 4, 6}, and the preferred slot offset threshold in the UE assistance information is 1. The gNB selects an appropriate value as the slot offset threshold and configures the UE. The UE decides this appropriate value as the preferred slot offset threshold. The appropriate value is greater than or equal to the UE preferred slot offset threshold, e.g., 1, 4, or 6.

As another example, the preferred slot offset threshold is determined by a preferred slot offset index and a time domain configuration list in the UE assistance information. For example, the time domain configuration list is {0, 3, 4, 5}, the preferred slot offset threshold is equal to 3 when the preferred slot offset index is 1, and equal to 5 when the preferred slot offset index is 3.

As another example, the preferred slot offset threshold is determined by a differential slot offset threshold. For example, if the current preferred slot offset threshold is 2, the preferred slot offset threshold will be changed to 5(═ 2+3) when the differential slot offset threshold in the UE assistance information is 3, and to 1(═ 2-1) when the differential slot offset threshold in the UE assistance information is-1. The absolute value of the differential slot offset threshold is less than 3 or 4.

In the UE embodiment, the configuration signaling received at 430 is a slot offset threshold configuration, as shown in fig. 4B. The transmission information associated with the slot offset threshold configuration includes a slot offset threshold. The slot offset threshold is defined as the minimum slot offset that the gNB schedule can use. If the UE is configured with a slot offset threshold, the UE knows that it is scheduled with a slot offset greater than or equal to the slot offset threshold. For example, if the list of slot offsets is 0246, then slot offset 246 may be used for data scheduling when the slot offset threshold is equal to 2, and slot offset 46 may be used for data scheduling when the slot offset threshold is equal to 4. If data traffic of the URLLC service is transmitted, the slot offset threshold may be equal to 0 or disabled. In other cases, the slot offset threshold may be an integer greater than 0, e.g., equal to 1, 2, 3, 4, 6, 8, 10, 12, or 16. If the slot offset threshold is greater than 0, it is referred to as "cross-slot scheduling". During the slot offset, the UE may go to sleep (e.g., microsleep or light sleep) as soon as possible after receiving the last OFDM symbol of the PDCCH, thereby reducing power consumption of the UE. The slot offset threshold defined in example 1 may be used as the parameter received in fig. 4B for the UE.

The slot offset threshold may be defined for at least one of: a PDSCH slot offset threshold, a PUSCH slot offset threshold, a PDSCH to HARQ slot offset threshold, an aperiodic CSI-RS slot offset threshold, a PDSCH decoding time threshold, a PUSCH preparation time threshold, and a CSI calculation delay threshold. The slot offset threshold is described as follows.

Example 1a

The slot offset threshold is the slot offset threshold (k0) of the PDSCH. The time slot offset (k0) of the PDSCH is defined as the time gap between the PDCCH and its scheduled PDSCH. And, the slot offset threshold of the PDSCH is defined as the smallest slot offset of the PDSCH in the time domain configuration list of the PDSCH that can be used for data scheduling. The time domain configuration list of PDSCH contains a set of slot offsets (k0) of PDSCH.

Fig. 5 shows an example of cross-slot scheduling for PDSCH with k0 greater than 0, the slot offset threshold (k0) of PDSCH is 2, and the time domain configuration list of PDSCH is {1, 2, 3 }. The gNB schedules a slot offset equal to 2 slots, which is equal to (or greater than) the PDSCH slot offset threshold. A signal in a Physical Downlink Control Channel (PDCCH)302 at slot 0 is monitored and decoded (blind decoding) to obtain DCI. The DCI indicates the location of PDSCH 304 in slot 2, and during slot offset 312, the UE goes to sleep, thereby reducing power consumption.

In one embodiment for the UE, the parameter received at 430 is a slot offset threshold. The slot offset threshold is defined as the slot offset threshold (k0) of the PDSCH. The time slot offset (k0) of the PDSCH is defined as the time gap between the PDCCH and its scheduled PDSCH. The UE has 2 states: sleep state (for power saving, e.g. microsleep, light sleep or deep sleep) and active state (high power for signal reception/processing). Only the slot with PDCCH monitoring (without any scheduling grant and PDSCH/PUSCH/PUCCH) occupies a significant portion of the time and energy. For ease of reference, the case where the UE monitors only the PDCCH without any scheduling grant and PDSCH/PUSCH/PUCCH is referred to as a PDCCH-only monitoring case. If the UE does not know the cross-slot scheduling of the PDSCH in advance, the remaining OFDM symbols corresponding to the PDCCH decoding time need to be received and may cause unnecessary power consumption. In the case of PDCCH-only monitoring, Radio Frequency (RF) dominates over the total power consumption. The sleep state (microsleep) may be the most efficient power saving scheme in case of PDCCH monitoring only. During micro-sleep, the RF components are turned off when no authorization is detected within the time slot. If the UE knows the slot offset threshold (cross scheduling of PDSCH) in advance, it can go to sleep (e.g., microsleep) as soon as possible after receiving the last OFDM symbol of PDCCH and can reduce power consumption, as shown in fig. 5, the UE can go to microsleep at 306 after receiving the OFDM symbol of PDCCH at 310.

Example 1b

The slot offset threshold is defined as the slot offset threshold for PUSCH (k 2). The slot offset (k2) of the PUSCH is the time gap between the PDCCH and its scheduled PUSCH. And, the slot offset threshold of the PUSCH is the minimum slot offset of the PUSCH in the time domain configuration list of the PUSCH available for scheduling. The time domain configuration list of PUSCH contains a set of slot offsets for PUSCH (k 2).

In one embodiment for the UE, the parameter received at 430 is a slot offset threshold. The slot offset threshold is a PUSCH slot offset threshold (k 2). The slot offset (k2) of the PUSCH is the time gap between the PDCCH and its scheduled PUSCH. The UE has 2 states: a sleep state and an active state. A slot with PDCCH monitoring only (without any scheduling grant and PUSCH) occupies a significant portion of time and energy. If the UE knows the slot offset threshold (for cross-scheduling of PUSCH) in advance, it can go to sleep (such as microsleep) after receiving the last OFDM symbol of PDCCH, and power consumption can be reduced.

Example 1c

The slot offset threshold is the PDSCH to HARQ slot offset threshold (k 1). The PDSCH to HARQ slot offset (k1) is the time gap between the PDSCH and its HARQ. And, the PDSCH to HARQ slot offset threshold is the smallest PDSCH to HARQ slot offset in a given PDSCH to DL ACK (DL-DataToUL-ACK) timing list, which may be used for scheduling. The timing list for a given PDSCH-to-DL ACK (DL-DataToUL-ACK) contains a set of 8 slot offsets for PDSCH-to-HARQ (k 1).

In one embodiment for the UE, the parameter received at 430 is a slot offset threshold. The slot offset threshold is the PDSCH to HARQ slot offset threshold (k 1). The PDSCH to HARQ slot offset (k1) is the time gap between the PDSCH and its HARQ. If the UE knows the slot offset threshold (for cross-scheduling of PUSCH) in advance, it can go to sleep (such as microsleep) after receiving the last OFDM symbol of PDCCH, and power consumption can be reduced.

Example 1d

The slot offset threshold is a slot offset threshold of the aperiodic CSI-RS. The slot offset of the aperiodic CSI-RS is the time gap between the PDCCH and the aperiodic CSI-RS occasion. The slot offset threshold of the aperiodic CSI-RS is the minimum slot offset of the aperiodic CSI-RS in the slot offset list of aperiodic CSI-RSs available for scheduling.

Example 1e

The slot offset threshold is a slot offset threshold of PDSCH decoding time. If the first uplink symbol of PUCCH carrying hybrid automatic repeat request acknowledgement (HARQ-ACK) information is not earlier than symbol L₁Initially, the UE will provide a valid HARQ-ACK message with the first uplink symbol of the PUCCH timed by the assigned HARQ-ACK₁And PUCCH resource definition to be used and including the effect of timing advance, where L₁Is the next uplink symbol whose CP starts after the following equation represents time after the end of the last symbol of the PDSCH carrying the TB is acknowledged,

T_proc,1＝(N₁+d_1,1)(2048+144)·κ2^-μ·T_Cequation 1.

PDSCH decoding time is defined as N₁。T_proc,1The value of (d) indicates the minimum processing time of the PDSCH. The value of μ is defined as the subcarrier spacing index (0 for 15KHz, 1 for 30KHz, 2 for 60KHz, 3 for 120KHz, 4 for 240KHz, 5 for 480 KHz). κ equals 64. T is_cCan be defined as T_c＝1/(Δf_max·N_f) Wherein Δ f_max＝480·10³Hz and N_f＝4096。d_1,1Is determined by the last symbol index of the PDSCH, such as d if the last symbol of the PDSCH is on the ith symbol of the slot, where i < 7_1,17-i, otherwise d_1,1＝0。

Example 1f

The slot offset threshold is a slot offset threshold of the PUSCH preparation time. If the first uplink symbol in the PUSCH allocation for a transport block is not earlier than symbol L₂Where, the UE will send a transport block,wherein the first uplink symbol comprises a dedicated demodulation reference signal (DM-RS), e.g., by a slot offset of K₂And a Start and Length Indicator Value (SLIV) of the scheduling DCI, wherein L₂Defined as the next uplink symbol whose Cyclic Prefix (CP) begins at the following equation after the end of the last symbol of the PDCCH carrying DCI scheduling PUSCH,

T_proc,2＝max((N₂+d_2,1)(2048+144)·κ2^-μ·T_C,d_2,2) Equation 2.

PUSCH prepare time is defined as N₂。T_proc,2The value of (d) indicates the minimum processing time of the PUSCH. The value of μ is defined as the subcarrier spacing index (0 for 15KHz, 1 for 30KHz, 2 for 60KHz, 3 for 120KHz, 4 for 240KHz, 5 for 480 KHz). κ equals 64. T is_cIs defined as T_c＝1/(Δf_max·N_f) Wherein Δ f_max＝480·10³Hz and N_f＝4096。d_2,1Is determined by the PUSCH and DM-RS, e.g., d if the first symbol of the PUSCH allocation (PUSCH allocation) includes only DM-RS_2,1Not more than 0, otherwise d_2,1＝1。d_2,2The value of (b) is the BWP switching time.

Example 1g

The slot offset threshold may include the following parameters: a PDSCH slot offset threshold, a PUSCH slot offset threshold, a PDSCH to HARQ slot offset threshold, an aperiodic CSI-RS slot offset threshold, a PDSCH decoding time threshold, a PUSCH preparation time threshold, and a CSI calculation delay threshold. The slot offset threshold for each parameter may be determined by the primary cell and the secondary cell. If no PDCCH is granted on the primary cell, the slot offset threshold for the parameter (PDSCH slot offset threshold, PUSCH slot offset threshold, PDSCH to HARQ slot offset threshold, aperiodic CSI-RS slot offset threshold, PDSCH decode time threshold, PUSCH preparation time threshold, CSI calculation delay threshold) is greater than 0. In another example, if the PDCCH is not granted on the primary cell, the slot offset threshold for each parameter (PDSCH slot offset threshold, PUSCH slot offset threshold, PDSCH to HARQ slot offset threshold, aperiodic CSI-RS slot offset threshold, PDSCH decoding time threshold, PUSCH preparation time threshold, CSI computation delay threshold) is equal to the maximum value in the slot offset list for each parameter.

Example 2

In this embodiment for the gNB, the configuration signaling sent at 410 is the configuration of the wake-up signal (or PDCCH-based power save signal (WUP), or DCI-based power save signal (WUD), sequence-based power save signal (WUS)). As shown in fig. 6, during DRX operation (including the "on duration" state and the "off duration" state), a wake-up signal is transmitted to the UE prior to the "on duration" state. The configuration of the wake-up signal includes a time gap. A time gap between the wake-up signal and an "on duration" state of DRX is determined based on whether a predetermined condition is satisfied for one or more parameters. The predetermined condition may vary depending on the parameter. For example, the condition may include a bandwidth part indicator in DCI. For example, if the bandwidth part indicator indicates a new BWP to be used (changing BWP index), the time gap between the wake-up signal and the "on duration" state of DRX is greater than 0.

In another example, the wake-up signal includes at least a bandwidth portion indicator. And, the time gap between the wake-up signal and the "on duration" state of DRX is determined by at least one of the following parameters: bandwidth part indicator in wake-up signal, bandwidth part indicator in last DCI, BWP switching delay, subcarrier spacing, current BWP index, frequency domain bandwidth, frequency domain position. For example, the time gap between the wake-up signal and the "on duration" state of DRX may be determined by the bandwidth part indicator, the current BWP index and the BWP switching delay in the wake-up signal. If the bandwidth part indicator in the wake-up signal is different from the current BWP index (or the BWP handover request is sent to the UE via the wake-up signal), the time gap between the wake-up signal and the "on duration" state of DRX is equal to the BWP handover delay. Otherwise, the time gap between the wake-up signal and the "on duration" state of DRX is equal to 0.

The BWP handover delay is defined in table 1. For DCI-based BWP handover, after the UE receives a BWP handover request at slot n on the serving cell, the UE will be able to receive PDSCH (for DL active BWP handover) or transmit PUSCH (for UL active BWP handover) on the new BWP on the serving cell, where BWP handover occurs no later than slot n + Y on the serving cell, where Y is the BWP handover delay. The UE will complete the BWP handover within the duration Y defined in table 1.

Table 1: BWP handoff delay

Fig. 6 shows an example of a time gap 610 between the wake signal and the "on duration" state of DRX. A BWP handover request (BWP 0 with subcarrier spacing of 0 changed to BWP0 with subcarrier spacing of 1) is sent to the UE. According to table 1, the BWP switching delay is equal to 3 ms. Thus, the time gap 610 between the wake-up signal in fig. 6 and the "on duration" state of DRX is equal to 3 ms. Since BWP is successfully switched and DRX "on duration" is activated simultaneously, there is no unnecessary waiting power consumption.

In another example, the wake-up signal may be determined by at least one of: search space and control resource sets. For example, the time domain location of the wake-up signal is defined by the search space, while the frequency domain location of the wake-up signal is defined by the set of control resources. In another example, the time and frequency domain locations of the wake-up signal are defined by a search space. The bandwidth of the wake-up signal is equal to the bandwidth of the current BWP. In another example, the time and frequency domain locations of the wake-up signal are defined by a set of control resources.

In another example, the wake-up signal may be configured as one or more of: UE-specific signals and UE group-specific signals. If the wake-up signal is configured as a UE-specific signal, it is scrambled by one of: a user equipment identifier (UE-ID), a cell radio network temporary identifier (C-RNTI), or an energy efficient Radio Network Temporary Identifier (RNTI). If the wake-up signal is configured as a UE group-specific signal, it is scrambled by one of: some bits per UE-ID, all bits per UE-ID, C-RNTI per UE, or energy-saving RNTI. For a UE group-specific wake-up signal, all UEs in the group are configured with the same DRX cycle.

In an embodiment of the UE, as shown in fig. 4B, the parameter received at 430 is a wake-up signal. As shown in fig. 6, during DRX operation, the UE receives a wake-up signal during DRX operation (including an "on duration" state and an "off duration" state). The UE should wake up to monitor the PDCCH in the "on duration" state, and the UE should go to sleep in the "off duration" state. The time gap between the received wake-up signal and the "on duration" state of DRX is based on a determination of whether one or more parameters satisfy a predetermined condition. The predetermined condition may vary depending on the parameter. For example, the condition may include a bandwidth part indicator in DCI. For example, if the bandwidth part indicator indicates a new BWP to be used (such as changing the BWP index), the time gap between the wake-up signal and the "on duration" state of DRX is greater than 0. The wake-up signal defined in example 2 may be used as a parameter for the UE received at 430 in fig. 4B.

Example 3

In this embodiment for a base station or a gNB, the configuration signaling sent at 410 is an enter sleep signal. The configuration of the sleep signal includes one or more of the following parameters: number of inactive DRX cycles, number of inactive time slots, number of inactive milliseconds, DRX short cycle, DRX long cycle, index of DRX parameter set.

For example, the transmission information associated with the go to sleep signal may include the number of inactive DRX cycles. The gNB may send an enter sleep signal to the UE (including the number of inactive DRX cycles, e.g., x0), and then the gNB does not send data to the UE for the future x0 DRX cycles including the current DRX cycle and the next (x0-1) DRX cycles. Since the UE knows that no data is to be granted for x0 DRX cycles, it can go to sleep to reduce power consumption. Fig. 7 shows an example of an enter sleep signal with x0 ═ 3 inactive DRX cycles for DRX operation. At 710, 720, and 730, the gNB will not send data to the UE, and the UE may remain asleep to save power. At 740, the gNB may transmit data to the UE, and the UE may wake up to monitor the PDCCH.

In another example, the transmission information associated with the sleep-entering signal includes a number of inactive slots (measured in time such as slots or milliseconds (ms)). The gNB may send an enter sleep signal to the UE (including the number of inactive slots, such as x1 ═ 2 or 4, and the gNB will not send data to the UE in the future x1 slots, since the UE knows that there is no data to authorize in the x1 slots, the UE may go to sleep to reduce power consumption.

In another example, the transmission information associated with the sleep-entering signal includes a value of a DRX short cycle. The gNB sends an enter sleep signal to the UE (including a value of DRX short period, such as x2 ms), while the gNB will send data to the UE according to a new DRX short period of x 2ms (such as x2 ═ 8 ms). The UE may wake up to monitor the PDCCH according to the new DRX short cycle of 8 ms. With the new DRX short cycle, the UE may have lower power consumption.

In another example, the transmission information associated with the sleep-entering signal includes a value of a DRX long cycle. The gNB transmits an enter-sleep signal including a value of a DRX long cycle, such as x 3ms, to the UE, and the gNB will transmit data to the UE according to a new DRX long cycle of x 3ms (such as x3 ═ 320 ms). The UE may wake up to monitor the PDCCH according to a new DRX long cycle of 320 ms. With the new DRX long cycle, the UE may have lower power consumption.

In another example, the transmission information associated with the incoming sleep signal includes an index of a DRX parameter set. The gNB may send an enter-sleep signal to the UE including an index of a DRX parameter set, such as x 4. The new DRX configuration parameters are determined from the index of the DRX parameter set and the DRX parameter set. The DRX parameter set may be predefined to comprise at least one of: DRX HARQ RTT timer for DL, DRX HARQ RTT timer for UL, DRX inactivity timer, DRX long cycle start offset, DRX on duration timer, DRX retransmission timer for DL, DRX retransmission timer for UL, DRX short cycle timer, DRX short cycle, DRX slot offset. An example of a DRX parameter set is shown in table 2. "X" in Table 2 means undefined. If the index of the DRX parameter set is equal to 3, the DRX short cycle is equal to 16ms, the DRX short cycle timer is equal to 10ms, the DRX on duration timer is equal to 2ms, the DRX inactive timer is equal to 3ms, the DRX long cycle is equal to 40ms, and the DRX retransmission timer for the DL is equal to 4 slots.

Table 2: examples of DRX parameter sets

In another example, the transmission information associated with the sleep-entering signal includes at least one of: one or more DRX parameters, BWP index, slot offset threshold, number of UE receive antennas, number of UE transmit antennas, PDCCH monitoring period, secondary cell state. For example, the sleep-in signal may include a DRX parameter and a BWP index. For example, when the DRX short cycle of the DRX parameter in the sleep-in signal is 320ms and the BWP index is 0, the gNB transmits data to the UE according to the DRX short cycle of 320ms and the DRX operation with the BWP index of 0.

In another example, the transmission information associated with the sleep-entering signal includes DRX parameters, BWP index, and secondary cell state. For example, when the DRX on duration timer of the DRX parameter into the sleep signal is 4ms, the BWP index is 0, and the secondary cell status is "off", the gNB may transmit data to the UE according to the DRX operation with the DRX on duration timer of 4ms, the BWP index is 0, and the gNB may not transmit data or a reference signal to the UE on the secondary cell.

In another example, the transmission information associated with the sleep-entering signal includes one or more DRX parameters, a BWP index, a slot offset threshold, and a secondary cell state. For example, when the DRX inactivity timer of the DRX parameter in the go-to-sleep signal is 3ms, the BWP index is 1, the slot offset threshold is 2, and the secondary cell status is "off", then the gNB transmits data to the UE according to the DRX operation with the DRX on duration timer of 4ms, the BWP index is 0, and the gNB will not transmit data or a reference signal on the secondary cell to the UE. Meanwhile, the gNB will send data or reference signals to the UE on the primary cell with a minimum slot offset of 2 slots.

In another example, the transmission information associated with the sleep-entering signal includes a number of UE receive antennas and a number of UE transmit antennas. For example, when the number of UE receive antennas in the sleep-entering signal is 2 and the number of UE transmit antennas is 4, then after the UE receives the sleep-entering signal, the UE receives data from the gNB via the 2 receive antennas and transmits the data to the gNB via the 4 transmit antennas.

In another example, the sleep-entering signal is transmitted on the PDCCH using a scrambling method of the energy-saving RNTI. In another example, the sleep-entering signal is defined by DCI.

In the UE, as shown in fig. 4B, the configuration signaling received at 430 is a configuration to enter sleep signal. The configuration of the sleep signal includes one or more of: number of inactive DRX cycles, number of inactive time slots, number of inactive milliseconds, DRX short cycle, DRX long cycle, index of DRX parameter set. The go to sleep signal in example 3 may be used as the parameter for the UE received at 430 in fig. 4B.

Example 4

In this embodiment for the gNB, the configuration signaling sent at 410 includes at least one of a wake-up signal or an enter-sleep signal. Determining whether a wake-up signal or an enter-sleep signal is configured or sent to the UE based on whether a condition is satisfied for one or more of the parameters. The condition may vary depending on the parameter. The parameter is transmission information associated with the configuration signaling. For example, the parameters include at least one of: DRX parameters, time domain parameters, BWP parameters, UE states, the number of MIMO parameters, UE auxiliary information, and RNTI parameters.

For example, the condition may include a DRX parameter including a DRX short cycle. Based on the determination of the condition, the gNB sends a wake-up signal or a go-to-sleep signal to the UE. For example, if a DRX short cycle of a DRX parameter is configured, a wake-up signal is transmitted to the UE; otherwise, sending a sleep-entering signal to the UE. In another example, the DRX parameters include a DRX long cycle. If the DRX long cycle is configured, sending a sleep entering signal to the UE; otherwise, a wake-up signal is sent to the UE.

In another example, the condition may include a time domain parameter. The time domain parameter includes a slot offset. Based on the determination of the condition, the gNB may send a wake-up signal or go to sleep signal to the UE. For example, if the time slot offset of the time domain parameter is greater than 2, a wake-up signal is sent to the UE; otherwise, sending a sleep-entering signal to the UE.

In an embodiment at the UE, as shown in fig. 4B, the configuration signaling received at 430 includes at least one of a wake-up signal or a go-to-sleep signal. Determining whether the UE receives a wake-up signal or enters a sleep signal based on whether a condition is satisfied for one or more parameters. The condition may vary depending on the parameter. The parameter is transmission information associated with the configuration signaling. For example, the parameters include one or more of: DRX parameters, time domain parameters, BWP parameters, UE states, the number of MIMO parameters, UE auxiliary information, and RNTI parameters. For example, the condition may include a DRX parameter including a DRX short cycle. For example, if the DRX short cycle is configured, the UE detects and receives a wake-up signal; otherwise, the UE detects and receives the sleep-entering signal. In another example, the DRX parameters include a DRX long cycle. If the DRX long cycle is configured, the UE detects and receives a sleep signal; otherwise, the UE detects and receives the wake-up signal. The wake-up signal or go to sleep signal is defined in example 4 and may be used as the configuration signaling for the UE received at 430 in fig. 4B.

Example 5

In an embodiment at the gNB, the configuration signaling sent at 410 includes a configuration of carrier aggregation/dual connectivity (CA/DC) activation/deactivation. The configuration of carrier aggregation/dual connectivity (CA/DC) activation/deactivation is determined by scheduling DCI. The scheduling DCI may include one or more of: DCI format 0_0, DCI format 0_1, DCI format 1_0, and DCI format 1_ 1. Since HARQ (acknowledgement/negative acknowledgement, ACK/NACK) is reported to the gNB for PDSCH scheduled by the scheduling DCI, the UE and the gNB have the same understanding of the state of CA/DC. Therefore, unnecessary power consumption due to misinterpretation of the CA/DC state can be avoided.

In an embodiment of the UE, as shown in fig. 4B, the configuration signaling received at 430 includes a configuration of activation/deactivation configuration of CA/DC. The configuration of the activation/deactivation configuration of CA/DC may be determined by scheduling DCI. The scheduling DCI may include one or more of: DCI format 0_0, DCI format 0_1, DCI format 1_0, and DCI format 1_ 1. Since HARQ (ACK/NACK) must be reported to the gNB for PDSCH scheduled by the scheduling DCI, the UE and the gNB have the same understanding of the state of CA/DC. Therefore, unnecessary power consumption due to misinterpretation of the CA/DC state can be avoided.

Example 6

In an embodiment of the gNB, the configuration signaling sent at 410 includes a configuration of the reference signal. Determining whether a reference signal is configured or transmitted to the UE based on whether one or more parameters satisfy a condition. The condition may vary depending on the parameter. The parameter is transmission information associated with the configuration signaling. For example, the parameters include one or more of: the current BWP index and the new BWP index. For example, if the overlap of the bandwidth of the current BWP index and the bandwidth of the new BWP index is greater than 0, the reference signal is not configured. Since there is an overlap between the bandwidth of the current BWP index and the bandwidth of the new BWP index, there is no need to measure large-scale channel information for the UE, and power saving can be achieved. Otherwise, the reference signal is configured for UE channel tracking or measurement. In some example embodiments, the reference signal is a tracking reference signal. If a reference signal is configured, the reference signal is a power saving signal, such as a wake-up signal or a go-to-sleep signal.

In an embodiment of the UE, as shown in fig. 4B, the configuration signaling received at 430 includes a reference signal. Determining whether the UE receives the reference signal based on whether one or more parameters satisfy a condition. The condition may vary depending on the parameter. The parameter is transmission information associated with the configuration signaling. For example, the parameters include at least one of: the current BWP index and the new BWP index. For example, if the bandwidth of the current BWP index overlaps with the bandwidth of the new BWP index by more than 0, the UE does not detect the reference signal or does not receive the reference signal. Otherwise, the UE detects and receives a reference signal for channel tracking or measurement. In some example embodiments, the reference signal is a tracking reference signal. If a reference signal is configured, the reference signal is a power saving signal, such as a wake-up signal or a go-to-sleep signal.

Example 7

In an implementation of the gNB, the configuration signaling sent at 410 includes search space parameters and DRX parameters. The transmission information associated with the search space parameters includes a PDCCH monitoring slot cycle. And, the transmission information associated with the DRX parameters includes an on duration timer and an inactivity timer. The PDCCH monitoring slot cycle may be determined by a DRX on duration state and a DRX inactive state. The PDCCH monitoring slot cycle for the DRX inactive state is y0 times the PDCCH monitoring slot cycle for the DRX on duration state. The PDCCH monitoring slot cycle for the DRX on duration state is equal to the configured PDCCH monitoring slot cycle. The value of y0 can be an integer greater than 1, e.g., y0 is equal to 2, 3, 4, 6, 8, 12, 16, or 32. For example, if the PDCCH monitoring slot cycle is configured to 4 slots, when y0 is equal to 2, the PDCCH monitoring slot cycle of the DRX on-duration state is 4 slots, and the PDCCH monitoring slot cycle of the DRX inactive state is 8 slots. Fig. 8 shows an example where PDCCH monitoring slot cycle 810 of DRX on duration state 840 is 4 slots and PDCCH monitoring slot cycle 830 of DRX inactive state 850 is 8 slots. At 820 in fig. 8, PDSCH is scheduled (or the gNB transmits data to the UE). Then, the DRX inactivity timer 850 is activated, wherein the UE can monitor the PDCCH according to a PDCCH monitoring slot cycle having 8 slots.

In another example, the PDCCH monitoring slot cycle for the DRX on duration state is y1 times the PDCCH monitoring slot cycle for the DRX inactive state. The PDCCH monitoring slot cycle for the DRX inactive state may be equal to the configured PDCCH monitoring slot cycle. The value of y1 can be an integer greater than 1, e.g., y1 is equal to 2, 3, 4, 6, 8, 12, 16, or 32. For example, if the PDCCH monitoring slot cycle is configured to be equal to 8 slots, when y1 is equal to 2, the PDCCH monitoring slot cycle of the DRX inactive state may be 8 slots, and the PDCCH monitoring slot cycle of the DRX on-duration state may be 16 slots.

In another example, the search space includes a PDCCH monitoring slot cycle and the DRX parameters include a DRX cycle. The DRX short cycle is equal to the DRX short cycle if configured. Otherwise, the DRX period is equal to the DRX long period. The minimum value of the PDCCH monitoring slot cycle and DRX cycle for the primary cell may be m0, and the minimum value of the PDCCH monitoring slot cycle and DRX cycle for the secondary cell may be m1, and m1 may be greater than m 0. For example, m1 may be y2 times m 0. The value of y2 can be an integer greater than 1, e.g., y2 is equal to 2, 3, 4, 6, 8, or 12.

In an embodiment of the UE, as shown in fig. 4B, the parameters received at 430 include at least a search space and DRX parameters. The search space includes a PDCCH monitoring slot cycle and the DRX parameters include at least an on duration timer and an inactivity timer. The PDCCH monitoring slot cycle is determined by a DRX on duration state and a DRX inactive state. The PDCCH monitoring slot cycle for the DRX inactive state may be y0 times the PDCCH monitoring slot cycle for the DRX on duration state. The PDCCH monitoring slot cycle for the DRX on duration state may be equal to the configured PDCCH monitoring slot cycle. The value of y0 can be an integer greater than 1, e.g., y0 is equal to 2, 3, 4, 6, 8, 12, 16, or 32. For example, if the PDCCH monitoring slot cycle is configured to 4 slots, when y0 is equal to 2, the PDCCH monitoring slot cycle of the DRX on-duration state is 4 slots, and the PDCCH monitoring slot cycle of the DRX inactive state is 8 slots. In another example, the PDCCH monitoring slot cycle for the DRX on duration state is y1 times the PDCCH monitoring slot cycle for the DRX inactive state. The PDCCH monitoring slot cycle for the DRX inactive state may be equal to the configured PDCCH monitoring slot cycle. The value of y1 can be an integer greater than 1, e.g., y1 is equal to 2, 3, 4, 6, 8, 12, 16, or 32. For example, if the PDCCH monitoring slot cycle is configured to be equal to 8 slots, when y1 is equal to 2, the PDCCH monitoring slot cycle of the DRX inactive state is 8 slots, and the PDCCH monitoring slot cycle of the DRX on-duration state is 16 slots.

Example 8

In an embodiment of the gNB, as shown in fig. 4A, the configuration signaling sent at 410 includes at least one of a configuration of a wake-up signal and a configuration of an enter-sleep signal. In another embodiment of the UE, as shown in fig. 4B, the configuration signaling received at 430 includes at least one of a configuration of a wake-up signal or a configuration of a go-to-sleep signal. The respective signal includes at least one of a wake-up signal and an enter-sleep signal. In general, the UE monitors the PDCCH according to a predetermined period to determine whether the gNB schedules its own data transmission, reception, and measurement reporting of information. However, monitoring only the PDCCH (unlicensed or scheduled) consumes more power at the UE. The UE monitors the PDCCH according to the periodicity. If no scheduling information is detected, the UE may enter an inactive mode (or an off duration state) in DRX mode, and the UE may go to sleep to consume lower power.

In some example embodiments of the disclosed methods, prior to each potential PDCCH monitoring point, the gNB sends a signal (or DCI) to indicate whether the UE needs to monitor the PDCCH at the associated PDCCH monitoring point. This signal may be referred to as a power save signal. The power saving signal may be based on a sequence (or signal), abbreviated WUS (wake up signal). The power saving signal may be based on PDCCH, abbreviated WUP (wake-up PDCCH), or DCI, abbreviated WUD (wake-up DCI). The sequence is defined by one of: tracking reference signals, CSI-RS type reference signals, auxiliary synchronization signals, main synchronization signals and demodulation reference signals. If a signal is detected (or "1" is indicated), the PDCCH is monitored at a potential PDCCH monitoring point. If no signal is detected (or "0" is indicated), the UE monitors that the result is DTX, where the PDCCH is not monitored at the PDCCH monitoring point. The sequence-based wake-up signal may be referred to as WUS. A wake-up signal based on Downlink Control Information (DCI) may be referred to as a WUD. Since the DCI is transmitted on the PDCCH, it may also be referred to as WUP. The WUS may be WUD or WUP unless otherwise specified.

The aforementioned wake-up mechanism may have other embodiments as well. For example, the base station may transmit a "go to sleep" signal (GTS). If a GTS signal is detected, the UE does not monitor the PDCCH at the potential PDCCH monitoring point. Otherwise, the UE performs PDCCH monitoring. This may also be a scheduling indication. If the UE detects an indication of GTS of "0", PDCCH monitoring is performed at the potential PDCCH monitoring point. If the indication of the GTS is "1", PDCCH monitoring is not performed. In the foregoing, WUS, GTS, or scheduling indication information may be used.

The aforementioned wake-up mechanism may have other implementations as well. For example, the base station may transmit a wake-up signal (WUP) on the PDCCH or transmit a wake-up signal (WUD) based on DCI. If a WUP (or WUD) signal is detected, the UE monitors the PDCCH at a potential PDCCH monitoring point. Otherwise, the UE monitors DTX and does not perform PDCCH monitoring. This may be a scheduling indication. If the UE detects that the indication is "1" by WUP (or WUD), PDCCH monitoring is performed at a potential PDCCH monitoring point. If the WUP (or WUD) indication is "0", PDCCH monitoring is not performed. The WUP signal includes at least one of the following parameters: an indication of potential PDCCH monitoring, a duration of no potential PDCCH monitoring, a parameter of a search space, a parameter of DRX, a parameter of a control resource set (CORESET), a parameter of BWP, and a parameter of MIMO. The DCI or WUP is scrambled by a new type RNTI (or energy saving RNTI). The energy-saving RNTI is defined in NR version 16(NR Release) or later.

The duration of no potential PDCCH monitoring is an integer greater than 0 or equal to 0 and is specified in slots or milliseconds. It is defined as the duration of a PDCCH monitoring window where the UE does not need to monitor the PDCCH. It may be given in the number of subframes.

The parameters of the search space include at least one of the following parameters: search space type, PDCCH monitoring slot period and offset, PDCCH monitoring slot duration, number of PDCCH candidates per aggregation level, monitoring symbols within a slot.

The parameters of DRX (discontinuous reception) include at least one of the following parameters: a DRX "on duration" timer, a DRX inactivity timer, a DRX retransmission timer, a DRX short cycle, a DRX long cycle, a DRX short cycle timer.

The parameters of CORESET include at least one of the following parameters: frequency domain resources, duration, interleaver size, control resource set identifier.

The parameters of BWP include at least one of the following parameters: the BWP index.

The parameters of the MIMO include at least one of the following parameters: the number of UE receiving antennas, the number of UE transmitting antennas, the number of UE panels, the number of UE receiving layers and the number of UE transmitting layers.

Using the above-described wake-up mechanism, the UE may skip PDCCH monitoring without the need for PDCCH monitoring. The frequency range (or bandwidth) of the WUS may be selected to be narrower than the frequency range (or bandwidth) of the PDCCH in order to save power. Compact DCI may be selected for low power WUDs (WUPs). The monitoring method is based on low complexity sequences or compact DCI. Therefore, one advantage of such an embodiment is that the receiver power consumption is lower than the power consumption of PDCCH monitoring. In this way, reduction in power consumption can be achieved.

The following scheme details an embodiment of the wake-up mechanism proposed above:

if the UE detects a wake-up signal (or the detected indication is "1"), the UE should perform channel tracking and beam tracking (to maintain time/frequency synchronization), measure the reference signal, and report channel quality status (CSI) to the gNB according to the trigger status of WUS/WUP/WUD (or WUS trigger status, WUP trigger status, WUD trigger status). The WUS described below may be one of the following: WUP, WUD. The wake-up signal may be described as a power-saving signal, and it may be one of the following: a DCI-based power save signal, a PDCCH-based power save signal, a sequence-based power save signal. As shown in fig. 10, for the UE, a wake-up signal (indicating a "1") is detected at 1020. According to the respective WUS trigger state, the UE will measure the reference signal (e.g., CSI-RS or tracking RS) at 1030 and report the measurement results to the gNB at 1040. Typically, the time and frequency resources available for the UE to report CSI are controlled by the gNB. The measurement result (CSI) of the WUS trigger state may include a Channel Quality Indicator (CQI), a Precoding Matrix Indicator (PMI), a CSI-RS resource indicator (CRI), a SS/PBCH block resource indicator (SSBRI), a Layer Indicator (LI), a Rank Indicator (RI), and/or L1-RSRP. For CQI, PMI, CRI, SSBRI, LI, RI, L1-RSRP, the UE is configured by the higher layer with N ≧ 1 report setting, M ≧ 1 resource setting, and a trigger status list (given by the higher layer parameter CSI-Apperimodic TriggerStateList). Each trigger state in the CSI-AperiodicTriggerStateList contains a list of associated CSI-reportconfigurations indicating a resource set ID for the channel. The CSI-AperiodicTriggerStateList IE is used to configure the UE with a list of aperiodic trigger states. Each code point of the DCI field "CSI request" is associated with one trigger state. Upon receiving the value associated with the trigger state, the UE will perform CSI-RS (reference signal) measurements and aperiodic reporting on L1 according to all entries in the associatedReportConfigInfoList for that trigger state. Each associatedreportconfiglnfo in the associatedreportconfiglnfo list includes at least one of: reportConfigId, resourceSet, qcl-info, CSI-SSB-resourceSet, CSI-IM-resourcesForInterference, nzp-CSI-RS-resourcesForInterference. The reportConfigId indicates one of CSI-reportconfigs configured in the CSI-MeasConfig. The resource set is defined as NZP-CSI-RS-resource set for channel measurement. And, resourcesFornnelMeasurement in CSI-ReportConfig indicated by reportConfigId indicates entry number in nzp-CSI-RS-ResourceSetList in CSI-ResourceConfig. QCL-info includes a list of references to TCI-States for providing QCL sources and QCL types, and QCL-info includes at least one of: ServerCellIndex, BWP-Id, NZP-CSI-RS-resource Id, SSB-Index, qcl-type. csi-SSB-ResourceSet is defined for channel measurement. The resourcesforseennelmeasurements in the CSI-ReportConfig indicated by the reportConfigId indicate the entry number in the CSI-ResourceSetList in the CSI-ResourceConfig. The csi-IM-resources for interference is defined for interference measurement. The CSI-IM-ResourcesForInterference in the CSI-ReportConfig indicated by the reportConfigId indicates the entry number in the CSI-IM-ResourceSetList in the CSI-ResourceConfig. nzp-CSI-RS-resources ForInterference is defined for interference measurement. The nzp-CSI-RS-ResourceForInterference in the CSI-ReportConfigl indicated by the reportConfigId indicates the entry number in the nzp-CSI-RS-ResourceSetList in the CSI-ResourceConfig.

For high or low frequency operation, the UE needs to know the trigger state for proper reception of the WUS. In the disclosed subject matter, the trigger state of a WUS includes at least one of: transmitting configuration indicator information and a reporting configuration identifier. The transmission configuration indicator information may comprise at least one of the following parameter sets: doppler shift, doppler spread, mean delay, delay spread; doppler shift, doppler spread; doppler shift, average delay. The value of the reporting slot offset is determined by the reporting configuration identifier. The value of the aperiodic trigger offset is determined by the set of CSI-RS resources determined by the reporting configuration identifier.

The reporting offset for the WUS trigger state is defined as the offset between the reference slot and the slot where the measurement result (e.g., CSI) is reported to the gNB. When the reporting offset field of the WUS trigger state does not exist, the reporting offset of the WUS trigger state is determined by the subcarrier spacing. In one example, when there is no field for the reporting offset for the WUS trigger status, the UE applies a value of 1 when the PUSCH SCS is 15/30 KHz; value 2 is applied when PUSCH SCS is 60KHz and value 3 is applied when PUSCH SCS is 120 KHz. The aperiodic trigger offset can be defined as an offset between a reference slot and a slot in which the set of CSI-RS resources is transmitted. When there is no field (aperiodic trigger offset), the UE applies a value of 0 or 1 for the aperiodic trigger offset. The reporting offset value and the aperiodic triggering offset value may be specified in terms of slots or subframes or milliseconds. The reference slot is determined by a WUS parameter (e.g., WUS period). In one particular example, the reference slot is a slot in which a WUS signal is transmitted. When the trigger state is set to 0, no CSI is requested. The report offset is a value of a report slot offset list, and the report slot offset list (reportslotoffsetlt) is defined in an information element of CSI-ReportConfig. The values in the list of reporting slot offsets include one or more of: 40. 48, 64, 96, 128, 256, 320, 512, 600, 800, 1024 and 2048. The aperiodic trigger offset is one value in a set of aperiodic trigger offsets (aperiodicTriggeringOffset), and the set of aperiodic trigger offsets is defined in an information element of the NZP-CSI-RS-resources set. The values in the aperiodic trigger offset set include one or more of: 8. 10, 12, 16, 20, 24, 32, 40, 48, 64, 96, 128, 256, 320, 512, 600, 800, 1024 and 2048.

The UE may determine the trigger state of the WUS by one of the following methods:

method A

In the disclosed subject matter, the UE may determine its trigger state for WUS through DCI on PDCCH. The DCI received on the PDCCH may include a trigger state of the WUS. For example, the DCI field "CSI request" is associated with a WUS trigger state. Upon receiving a value associated with a trigger state ("CSI request"), the UE will perform measurements and aperiodic reporting of CSI-RSs (reference signals) on L1 signaling according to the trigger state. As shown in fig. 11, at 1110 of slot 0, the trigger state of the WUS is configured by the DCI (e.g., the "CSI request" field in the DCI). And, the UE detects a WUS signal at 1120 of slot 8. If the WUS signal indicates "1" (or CSI reporting or PDCCH monitoring or data grant scheduling is enabled), the UE measures the reference signal at 1130 of slot 11 and reports the measurement result to the gNB at 1140 of slot 14. The reference slot is located in the slot where the WUS signal is transmitted (at slot 8), the reporting offset value is equal to 3 slots, and the aperiodic trigger offset value is equal to 6 slots. After slot 14, the DRX on duration state begins. Beginning at slot 15, the gNB may schedule a transmission and the UE needs to monitor the PDCCH.

Method B

The UE may determine the trigger state of the WUS by one of the following methods: the UE may determine its trigger state for the WUS through RRC configuration parameters. The RRC configuration parameters may include at least information of a trigger state of the WUS. For example, the RRC parameter "CSI request" may be associated with a trigger state of the WUS. Upon receiving the value associated with the WUS trigger state, the UE will perform CSI-RS (reference signal) measurements and aperiodic reporting on L1 signaling according to the trigger state. As shown in fig. 12, at 1210, the trigger state of the WUS is configured by RRC information. Also, the UE detects a WUS signal at 1220 of slot 20, if the WUS signal indicates "1" (or enables CSI reporting or PDCCH monitoring or data grant scheduling), the UE measures a Reference Signal (RS) at 1230 of slot 21 and reports the measurement result to the gNB at 1240 of slot 22. The UE monitors the PDCCH at 1250 of the slots 23 to 25. The reference slot is located on the slot (at slot 20) where the WUS signal is transmitted, the reporting offset value is equal to 1 slot, and the aperiodic trigger offset value is equal to 2. After slot 22, the DRX on duration state begins. Beginning at slot 23, the gNB may schedule a transmission and the UE needs to monitor the PDCCH.

Method C

The UE may determine its trigger state for WUS through configuration parameters of a media access control-control element (MAC-CE). The MAC-CE configuration parameters may include at least information of the trigger state of the WUS. For example, information of "CSI request" may be associated with one trigger state. Upon receiving the value associated with the trigger state, the UE will perform CSI-RS (reference signal) measurements and aperiodic reporting on L1 according to the trigger state.

Example 9

In an embodiment of the gNB, as shown in fig. 4A, the configuration signaling sent at 410 includes at least one of a TRS configuration, a CSI-RS acquisition configuration, and an SSB configuration. In another embodiment of the UE, as shown in fig. 4B, the configuration signaling received at 430 includes at least one of a TRS configuration, a CSI-RS acquisition configuration, and an SSB configuration.

In some example embodiments of the disclosed method, the transmission information associated with the SSB configuration includes at least an SSB index. An Information Element (IE) of the SSB Index (SSB-Index) indicates SS-Block (synchronization signal (SS)/PBCH Block) within SS-Burst (Burst of Synchronization Signal (SS)/PBCH Block (SSB)).

In some example embodiments, the SSB configuration includes an associated SSB (referred to as an associatedSSB) that includes one or more of the following: SSB indexes or quasi co-located (quasi co-located) symbols. With the configuration of the associated SSB, the UE may base the timing of the CSI-RS resource on the timing of the cell given by the cell ID of the CSI-RS resource configuration. In addition, for a given CSI-RS resource, if an associated SS/PBCH block is configured but not detected by the UE, the UE may not monitor the corresponding CSI-RS resource. A quasi co-located symbol (e.g., isquasicolocated) indicates whether the associated SS/PBCH block and CSI-RS resource given by the associatedSSB are quasi co-located with respect to [ 'QCL-type' ].

In some example embodiments of the disclosed method, the transmission information associated with the TRS configuration includes at least one of the following parameters: NZP-CSI resource set identifier, NZP-CSI-RS resource, NZP-CSI-RS resource identifier, aperiodic trigger offset, TRS information (TRS-info).

In some example embodiments of the disclosed methods, the transmission information associated with the CSI-RS acquisition configuration comprises at least one of the following parameters: NZP-CSI-ResourceSetId, NZP-CSI-RS-Resorces, NZP-CSI-RS-ResourceId, aperiodic Triggering offset.

nzp-CSI-RS-Resources includes the following parameters: nzp-CSI-RSResourceId, resourceMapping, powerControlOffset, powerControlOffsetSS, scramblingID, periodicinAndOffset, and qcl-InfoperiodicCSI-RS.

Example 10

In embodiments of the gNB, as shown in fig. 4A, the configuration signaling sent at 410 includes WUS configuration. In another embodiment of the UE, as shown in fig. 4B, the configuration signaling received at 430 includes at least one of the WUS configurations. In some exemplary embodiments of the disclosed method, the transmission information associated with the WUS configuration includes: WUS offset. The WUS offset is determined by the measured window configuration. The measured window configuration may be referred to as a pre-awake window configuration or preparation period, which includes a process of measuring a channel and reporting a channel status. It may also include channel tracking and beam tracking (for time/frequency synchronization). The measured window configuration includes at least the following parameters: the duration of time. The WUS offset is determined by the measured window configuration. For example, if the measured window configuration is configured, the WUS offset is greater than or equal to the duration in the measured window configuration. If the measured window configuration is not configured, the WUS offset in the WUS configuration is less than the duration in the measured window configuration, or the WUS offset in the WUS configuration is equal to zero, or the WUS offset in the WUS configuration is equal to 1. The WUS offset is defined as the time gap between the slot containing the WUS and the reference slot. The reference slot is defined as a slot where the DRX on duration starts, or the reference slot is a slot where PDCCH monitoring starts. Fig. 13 shows an example of a DRX configuration with a short DRX short cycle of 16ms (16 slots) and an on duration timer of 4ms (4 slots). The duration of the measured window configuration is equal to 4 time slots. In fig. 13, when the measured window configuration is configured and the WUS offset is equal to 5 slots (equal to the duration of the measured window configuration plus 1), the UE performs measurement and reporting at 1310. At 1330, the measured window configuration is not configured and the WUS offset equals 1 slot (e.g., WUS on slot 20 and DRX "on duration" state starts on slot 21). The reference slot is the slot where the DRX on duration starts, e.g., at 1320. At 1340, because the WUS signal indicates a "0," the UE stays in a sleep state and the gNB does not perform data transmission, although the DRX "on duration" state is activated.

Similarly, fig. 14 shows another example, a PDCCH monitoring period is configured to have 16 slots, and the duration for PDCCH monitoring (the number of consecutive slots for which the search space lasts at each time instant) is 4 slots. The duration of the measured window configuration is equal to 4 time slots. In fig. 14, when the measured window configuration is configured and the WUS offset is equal to 5 slots (equal to the duration of the measured window configuration plus 1), the UE performs measurement and reporting at 1410. At 1430, the measured window configuration is not configured and the WUS offset is equal to 1 slot (e.g., WUS is on slot 20 and PDCCH monitoring begins on slot 21). The reference slot is the slot where PDCCH monitoring starts, e.g., at 1420. At 1440, since the WUS signal indicates "0", the UE stays in sleep state to save power and the gNB does not perform data transmission.

Example 11

In an embodiment of the gNB, as shown in fig. 4A, the configuration signaling sent at 410 includes a configuration of a preparation period. In another embodiment of the UE, as shown in fig. 4B, the configuration signaling received at 430 includes a configuration of a preparation period. In some example embodiments, the configuration of the preparation period includes a TRS configuration, a CSI-RS acquisition configuration, a duration, and an SSB configuration. The configuration of the preparation period may be referred to as a pre-awake window configuration or a measurement window configuration.

The TRS configuration is defined as at least a parameter of TRS information (TRS-Info) in a Non-Zero-Power (NZP) CSI-RS resource set is configured as "true". The CSI-RS acquisition configuration is defined as: repetition (repetition) in the NZP CSI-RS Resource set is configured with "off", and TRS information in the NZP CSI-RS Resource set is configured with "false", and CSI-RS-Resource-Mobility is not configured. The duration is defined as the number of slots of a measured window during which the UE can acquire and report Channel State Information (CSI). The SSB configuration includes an SSB index or associated SSB (referred to as an associatedSSB, including one or more of an SSB index or quasi-co-located symbol). The set of NZP CSI-RS resources may include at least one of the following parameters: nzp-CSI-ResourceSetId, nzp-CSI-RS-Resources, repetition, aperiodictriggeringOffset, trs-Info.

For example, the respective signal includes at least one of a WUS, WUP, or WUD. When the WUS (or WUP or WUD) indicates "1", the UE wakes up to detect/measure a channel and reports CSI based on the configuration of the preparation period. When the WUS (or WUP or WUD) indicates "0", the UE stays in a sleep state to reduce power consumption.

Example 12

In an embodiment of the gNB, as shown in fig. 4A, the configuration signaling sent at 410 includes a configuration of the preparation period (or measured window configuration). In another embodiment of the UE, as shown in fig. 4B, the configuration signaling received at 430 includes a configuration of a preparation period. In some example embodiments, the transmission information associated with the configuration of the preparation period includes a list of aperiodic trigger states (CSI-AperiodicTriggerStateList).

One or more aperiodic trigger state is defined in the list of aperiodic trigger states. The aperiodic trigger state includes one or more of: slot offset, reporting slot offset for resource set. The slot offset of the resource set in the list of aperiodic trigger states is the time gap between the slot containing the reference signal and the reference slot. And, the reference slot is a slot where a DRX on duration starts, or the reference slot is a slot where PDCCH monitoring starts, or the reference slot is a slot containing an SSB reference signal. The reference signal is a CSI-RS reference signal or an SSB reference signal. The reporting slot offset is a timing offset of an aperiodic report using PUSCH. This field lists the allowed offset values. A specific value of the reporting slot offset may be indicated in DCI. The network indicates in the DCI field of the UL grant which of the configured reporting slot offsets the UE will apply. In the list of aperiodic trigger states (CSI-AperiodicTriggerStateList), a CSI RS resource set (or SSB resource) configuration and a CSI report configuration are defined.

For example, when the WUS (or WUP or WUD) indicates "1", the UE wakes up to detect/measure a channel and reports CSI based on transmission information associated with a preparation period. And, the UE continues to monitor the PDCCH and receive/transmit data from/to the gNB. When the WUS (or WUP or WUD) indicates "0", the UE stays in a sleep state to reduce power consumption.

Example 13

In an embodiment of the gNB, the configuration signaling sent at 410 includes a WUS trigger state, as shown in fig. 4A. In another embodiment of the UE, as shown in fig. 4B, the configuration signaling received at 430 includes a WUS trigger state. In some example embodiments of the disclosed method, the transmission information associated with the WUS trigger state includes at least one of the following parameters: transmitting configuration indicator information and a reporting configuration identifier. The WUS trigger state is enabled by at least one of: RRC signaling, MAC-CE signaling, or DCI signaling. The above transmission configuration indicator information may include at least one of the following parameter sets at least with respect to the spatial reception information: doppler shift, doppler spread, mean delay, delay spread; doppler shift, doppler spread; doppler shift, average delay. The CSI RS resource set (or SSB resource) configuration and the CSI reporting configuration are determined by a reporting configuration identifier. By transmitting the configuration indicator information and the CSI RS resource set, the UE can accurately measure the channel.

For example, when a WUS (or WUP) indicates "1", the UE wakes up to detect/measure a channel (channel tracking, beam tracking, time/frequency synchronization, and CSI acquisition) and reports CSI based on transmission information associated with the WUS trigger state. And, the UE continues to monitor the PDCCH and receive/transmit data from/to the gNB. When the WUS (or WUP) indicates "0", the UE stays in a sleep state to reduce power consumption. For example, the UE receives signaling from RRC (RRC signaling) and configures the UE in a WUS triggered state in the RRC signaling. For example, the UE receives signaling from the MAC-CE (MAC-CE signaling) and configures the UE with a WUS trigger state in the MAC-CE signaling. For example, the UE receives signaling from DCI (DCI signaling) and configures the UE with a WUS trigger state in the DCI signaling.

Example 14

In an embodiment of the gNB, as shown in fig. 4A, the configuration signaling sent at 410 includes a wake-up signal. In another embodiment of the UE, as shown in fig. 4B, the configuration signaling received at 430 includes a wake-up signal. In some example embodiments of the disclosed method, the transmission information associated with the wake-up signal comprises at least one of the following parameters: WUS triggers the state. The WUS trigger state includes at least one of the following parameters: transmit configuration indicator information, and report configuration identifier. The WUS trigger state is enabled by at least one of: RRC signaling, MAC-CE signaling, or DCI signaling. The above transmission configuration indicator information may include at least one of the following parameter sets at least with respect to the spatial reception information: doppler shift, doppler spread, mean delay, delay spread; doppler shift, doppler spread; doppler shift, average delay. The CSI RS resource set (or SSB resource) configuration and the CSI reporting configuration are determined by a reporting configuration identifier. By transmitting the configuration indication information and the CSI RS resource set, the UE can accurately measure the channel.

Example 15

In an embodiment of the gNB, as in fig. 4A, the configuration signaling sent at 410 includes a configuration of a PDCCH-based energy saving signal, a configuration of a sequence-based energy saving signal, and a configuration of a preparation period. In another embodiment of the UE, as shown in fig. 4B, the configuration signaling received at 430 includes a configuration of a PDCCH-based energy saving signal, a configuration of a sequence-based energy saving signal, and a configuration of a preparation period. Which configuration signaling is transmitted to (or received by) the UE is determined based on whether a predefined set of resources satisfies a condition. The predefined set of resources includes at least one of: frequency range, BWP index, type of RNTI, DRX parameters. For example, if the frequency range is FR1, the configuration signaling is a configuration of a PDCCH-based energy saving signal (and the corresponding signal is a PDCCH-based energy saving signal) or a configuration of a sequence-based energy saving signal (and the corresponding signal is a sequence-based energy saving signal); if the frequency band is FR2, the configuration signaling is the configuration of the preparation period. For a WUP (PDCCH-based power save signal or wake-up PDCCH) signal, a compact DCI on PDCCH is used to indicate whether the UE is awake or going to sleep for power saving. The preparation period is defined to be the same as the measured window configuration in example 10 or example 11 or example 12. FR1 is defined as frequency range 1 for carrier frequencies less than 6GHz or sub-6 GHz, and FR2 is defined as frequency range 2 for carrier frequencies greater than 6 GHz. The sub-6 GHz range is referred to as FR1 and the millimeter wave range is referred to as FR2, and the following table shows a specific definition of the frequency range.

Definition of frequency ranges

Frequency range name	Corresponding frequency range
		FR1	450MHz–6000MHz
FR2	24250MHz–52600MHz

For example, when the frequency range of the UE is FR1 and the WUS (or WUP) indicates "1", the UE wakes up to detect/measure the channel and report CSI. And, the UE continues to monitor the PDCCH and receive/transmit data from/to the gNB. When the WUS (or WUP) indicates "0", the UE stays in a sleep state to reduce power consumption. For another example, when the frequency range of the UE is FR2 and the pre-awake window configuration is configured, the UE wakes up to detect/measure the channel and report CSI in a persistent state. And, the UE continues to monitor the PDCCH and receive/transmit data from/to the gNB.

For another example, if the BWP index is equal to 0 or 1, the UE is configured to be configured with a PDCCH-based power saving signal (and the corresponding signal may be a PDCCH-based power saving signal) or a sequence-based power saving signal (and the corresponding signal may be a sequence-based power saving signal); otherwise, the configuration signaling is the configuration of the preparation period.

For another example, when the type of RNTI is MCS-C-RNTI or a new type of RNTI (energy saving RNTI), the UE is configured to be PDCCH-based energy saving signal configuration (the corresponding signal may be a PDCCH-based energy saving signal) or sequence-based energy saving signal configuration (the corresponding signal may be a sequence-based energy saving signal); otherwise, the configuration signaling is the configuration of the preparation period.

For another example, when the DRX cycle of the DRX parameter is greater than the threshold, the UE is configured to be a PDCCH-based power saving signal (the corresponding signal may be the PDCCH-based power saving signal) or a sequence-based power saving signal (the corresponding signal may be the sequence-based power saving signal); otherwise, the configuration signaling is the configuration of the preparation period. The threshold may be one of: 40. 80, 160, 320, 640.

Example 16

In an embodiment of the gNB, as in fig. 4A, the configuration signaling sent at 410 includes one of: SSB index, SSS configuration, PSS configuration, TRS configuration, DMRS configuration, SRS configuration. And, the respective signal transmitted at 420 includes at least a periodic signal including at least one of: a Synchronization Signal Block (SSB), a Secondary Synchronization Signal (SSS), a Primary Synchronization Signal (PSS), a Tracking Reference Signal (TRS), a demodulation reference signal (DMRS), a Sounding Reference Signal (SRS). The periodic signal is for at least one of: RRM measurements, coarse synchronization, coarse beam information, channel tracking, CSI measurements, and beam tracking. Since the periodic signal has a long period, it may have very low power consumption for the UE. If there is no data or scheduled PDSCH granted for the UE, the UE detects only the periodic signal, and the UE can reduce most of the power consumption. The SSB Index (SSB-Index) indicates SS-Block (synchronization signal (SS)/PBCH Block) within SS-Burst (Burst of Synchronization Signal (SS)/PBCH Block (SSB)). In another embodiment of the UE, as shown in fig. 4B, the configuration signaling received at 430 includes one of: SSB index, SSS configuration, PSS configuration, TRS configuration, DMRS configuration, SRS configuration. And, the respective signal received at 440 includes at least a periodic signal including at least one of: a Synchronization Signal Block (SSB), a Secondary Synchronization Signal (SSS), a Primary Synchronization Signal (PSS), a Tracking Reference Signal (TRS), a demodulation reference signal (DMRS), a Sounding Reference Signal (SRS). The configuration signaling includes at least a period of the respective signal, and wherein the period of the respective signal is equal to one of: DRX cycle, DRX cycle multiplied by the value of N1, DRX cycle divided by the value of N2, and N3 milliseconds. Wherein N1 is a positive integer greater than 1, N2 is a positive integer greater than 1, and N3 is a positive integer. As an example, the DRX cycle is 64 milliseconds, and the cycle of the corresponding signal is 64 milliseconds (equal to the DRX cycle), 128 milliseconds (equal to the DRX cycle multiplied by the value of N1 and N1 is 2), 16 milliseconds (equal to the DRX cycle divided by the value of N2 and N2 is 4), or 320 milliseconds (equal to N3 and N3 is 320).

For another example, as shown in fig. 15, the DRX cycle is 40 msec, and the cycle of the corresponding signal is equal to 40 msec. At 1510, configuration signaling including the SSS index (or configuration of PSS, or configuration of SSS) is transmitted, and corresponding signals of PSS or SSS are transmitted at 1520, 1540, and 1560. The UE should monitor the PDCCH for DRX on durations of 1530 and 1550.

For another example, the configuration signaling may include an associated SSB, and the associated SSB includes one or more of: SSB indexes or quasi-co-located symbols. If there are quasi co-located symbols, the UE may base the timing of the CSI-RS Resource indicated in the CSI-RS-Resource-Mobility on the timing of the cell indicated by the cellId in the CSI-RS-CellMobilty. In this case, if the UE cannot detect the SS/PBCH block indicated by the associatedSSB (associated SSB) and cellId, the UE is not required to monitor the CSI-RS resource. If there are no quasi co-located symbols, the UE will base the timing of the CSI-RS resources indicated in the CSI-RS-Resource-Mobility on the timing of the serving cell indicated by the refServCellIndex. In this case, the UE is required to measure the CSI-RS Resource even if the SS/PBCH block having the cellId in the CSI-RS-Resource-Mobility is not detected.

A Synchronization Signal Block (SSB) is transmitted on a set of time/frequency resources (resource elements) within a basic OFDM grid. The SS block spans four OFDM symbols in the time domain and 240 subcarriers in the frequency domain. The PSS is transmitted in the first OFDM symbol of the SS block and occupies 127 subcarriers in the frequency domain. The remaining subcarriers are empty. The SSS is transmitted in a third OFDM symbol of the SS block and occupies the same set of subcarriers as the PSS. There are eight and nine null subcarriers on each side of the SSS. The PBCH is transmitted within the second and fourth OFDM symbols of the SS block. In addition, PBCH transmission also uses 48 subcarriers per side of SSS. Thus, the total number of resource elements used for PBCH transmission per SS block is equal to 576. Note that this includes resource elements for the PBCH itself, but also includes resource elements for demodulation reference signals (DMRS) required for coherent demodulation of the PBCH.

For the configuration of the PSS, it may include at least one of: period, slot offset, system information. PSS in PSS sequence { x_n}＝x_n(0)，x_n(1)，...，x_n(126) The mapped 127 resource elements are expanded. There are three different PSS sequences { x }₀}、{x₁And { x }₂As according to a recursive formula

The generated M-sequence of basic length 127 { x }, x (0), x (1),.., x (126), is derived from different cyclic shifts.

By applying different cyclic shifts to the basic M sequence x (n), three different PSS sequences { x can be generated according to the following equation₀}、{x₁And { x }₂}：

x₀(n)＝x(n)；

x₁(n)＝x(n+43mod 127)；

x₂(n)＝x(n+86mod 127)

For configuration of the SSS, it may include at least one of: period, slot offset, system information. The basic structure of SSS is the same as that of PSS, i.e., SSS consists of 127 subcarriers to which SSS sequences are applied. At a more detailed level, each SSS is derived from two basic M-sequences generated according to the following recursive formula:

the actual SSS sequence is then derived by adding the two M sequences together and applying different shifts to the two sequences

Due to the imperfections of the oscillator, the UE must track and compensate for the time and frequency variations in order to successfully receive the downlink transmission. To assist the UE in this task, a Tracking Reference Signal (TRS) may be configured. The TRS is not a CSI-RS. In contrast, the TRS is a resource set consisting of multi-periodic NZP-CSI-RS. More specifically, the TRS is composed of four single-port CSI-RSs of density 3 located in two consecutive slots. CRS-RSs within a resource set, and thus TRSs in itself, may be configured with a periodicity of 10, 20, 40, or 80 ms. Note that the exact set of resource elements (subcarriers and OFDM symbols) used for the TRS CSI-RS may vary. There is always a four symbol time-domain separation between the two CSI-RSs within one slot. This time domain separation sets the limit of the frequency error that can be tracked. Also, frequency domain separation (four subcarriers) sets the limit of timing error that can be tracked.

For demodulation reference signals (DMRSs), two main time domain structures are supported, differentiating on the position of the first DM-RS symbol. Mapping type a, where the first DM-RS is located in symbol 2 or 3 of the slot, and the DM-RS is mapped with respect to the start of the slot boundary regardless of where in the slot the actual data transmission begins. This type of mapping is mainly used in case the data occupies (most of) the time slots. The reason for symbol 2 or 3 in the downlink is to locate the first DM-RS occasion after CORESET at the beginning of the slot. Type B is mapped, where the first DM-RS is located in the first symbol of the data allocation, i.e., the DM-RS location is not given with respect to the slot boundary, but rather with respect to where the data is located. This mapping is initially facilitated by the following transmissions: transmission in a small portion of a time slot to support very low latency; and other transmissions that benefit from not waiting until the start of a slot boundary but can be used regardless of transmission duration.

For Sounding Reference Signals (SRS), it may be located somewhere within the last six symbols of the slot. In the frequency domain, the SRS has a so-called "comb (comb)" structure, which means that the SRS is transmitted on every nth subcarrier, where N may take the value 2 or 4 (comb-2 "and comb-4, respectively). By being assigned different combs corresponding to different frequency offsets, SRS transmissions from different UEs may be frequency multiplexed within the same frequency range. For comb-2, i.e., when the SRS is transmitted on every other subcarrier, the two SRSs may be frequency multiplexed. In the case of comb-4, up to four SRSs may be frequency multiplexed.

Example 17

In an embodiment of the gNB, as in fig. 4A, the configuration signaling sent at 410 includes configuration signaling to define a preparation period, and wherein the configuration signaling includes one or more of: TRS configuration, L1-RSRP calculation configuration, mobility management configuration and CSI acquisition configuration. For TRS configuration, the configuration parameters for NZP-CSI-RS-ResourceSet include: NZP-CSI resource set identifier, NZP-CSI-RS resource, NZP-CSI-RS resource identifier, aperiodic trigger offset, TRS information parameter. For the L1-RSRP calculation configuration, the configuration parameters for NZP-CSI-RS-ResourceSet include: NZP-CSI-ResourceSetId, NZP-CSI-RS-resources, NZP-CSI-RS-ResourceId, aperiodicTriggeringOffset, repetition parameter. For mobility management configuration, the configuration parameters of the NZP-CSI-RS-ResourceSet include: NZP-CSI resource set identifier, NZP-CSI-RS resource, NZP-CSI-RS resource identifier, aperiodic trigger offset, and CSI-RS resource mobility is configured. For CSI-RS acquisition configuration, the configuration parameters of the NZP-CSI-RS-resource set include one or more of: NZP-CSI-ResourceSetId, NZP-CSI-RS-ResourceId, and aperiodtriggingOffset. The NZP-CSI-ResourceSetId is used for identifying one NZP-CSI-RS-ResourceSet; the NZP-CSI-RS-Resource id is used for identifying one NZP-CSI-RS-Resource; the repetition parameter indicates whether the repetition is on/off. If the field is set to "OFF" or if the field is not present, the UE may not assume that the NZP-CSI-RS resources within the resource set are transmitted with the same downlink spatial domain transmission filter and with the same nroflort in each symbol; the TRS information parameter indicates that antenna ports of all NZP-CSI-RS resources in the CSI-RS resource set are the same. If this field does not exist or is released, the UE applies the value "false". The preparation period is only for the case where there is data or a scheduled PDSCH granted for the UE. If there is no data or scheduled PDSCH granted for the UE, the UE does not need to detect the preparation period and the UE can reduce most of the power consumption.

And, the configuration signaling at 420 includes configuration signaling defining a preparation period, and wherein the configuration signaling includes a CSI resource offset, wherein the CSI resource offset (which may be referred to as an aperiodic trigger offset) is a time gap between a slot transmitting the set of CSI-RS resources and a reference slot, wherein the reference slot is one of: a time slot starting a DRX on duration, a time slot starting PDCCH monitoring, a time slot transmitting a CSI report, a time slot transmitting a corresponding signal. For example, the reference slot is the slot (at slot 15) where the DRX on duration starts when DRX operation is configured, and the slot where the CSI-RS resource set is transmitted is located at slot 10, then the CSI resource offset is equal to 5 slots. For another example, when DRX operation is not configured, the reference slot is the slot (at slot 18) where PDCCH monitoring starts (PDCCH monitoring period and offset are configured by the search space), and the slot where the CSI-RS resource set is transmitted is located at slot 10, then the CSI resource offset is equal to 8 slots. For another example, if the reference slot is the slot in which the CSI-RS report is sent (at slot 5) and the slot in which the set of CSI-RS resources is sent is located in slot 10, then the CSI resource offset is equal to 5 slots. As another example, if the reference slot is a slot (at slot 5) in which a corresponding signal is transmitted and a slot in which a set of CSI-RS resources is transmitted is located at slot 8, then the CSI resource offset is equal to 3 slots. The corresponding signal may be one of: a PDCCH-based power save signal, a sequence-based power save signal, a signal-based power save signal, a DCI-based power save signal, a signal for transmitting DCI or PDCCH.

And the configuration signaling comprises configuration signaling for defining a preparation period, and wherein the configuration signaling comprises a reporting slot offset, wherein the reporting slot offset is a time gap between a slot containing the CSI report and a reference slot, wherein the reference slot is one of: a time slot starting with a DRX starting duration, a time slot starting with PDCCH monitoring, a time slot for sending a CSI-RS resource set, and a time slot for sending corresponding signals. For example, if the reference slot is the slot (at slot 15) where the DRX on duration starts when DRX operation is configured, and the slot containing the CSI report is located at slot 10, then the report slot offset is equal to 5 slots. As another example, when DRX operation is not configured, the reference slot is the slot (at slot 18) where PDCCH monitoring starts (the PDCCH monitoring period and offset are configured by the search space), and the slot containing the CSI report is located at slot 10, then the report slot offset is equal to 8 slots. As another example, if the reference slot is the slot (at slot 5) in which the set of CSI-RS resources is transmitted and the slot containing the CSI report is located in slot 10, then the report slot offset is equal to 5 slots. As another example, if the reference slot is the slot (at slot 5) where the corresponding signal is sent and the slot containing the CSI report is located at slot 8, then the report slot offset is equal to 3 slots. The corresponding signal may be one of: a PDCCH-based power save signal, a sequence-based power save signal, a signal-based power save signal, a DCI-based power save signal, a signal for transmitting DCI or PDCCH.

For example, the report slot offset is a value of a report slot offset list, and the report slot offset list (reportslotoffsetlt) is defined in an information element of the CSI-ReportConfig. The values in the list of reporting slot offsets include one or more of: 40. 48, 64, 96, 128, 256, 320, 512, 600, 800, 1024 and 2048. The aperiodic trigger offset is one value in a set of aperiodic trigger offsets (aperiodicTriggeringOffset), and the set of aperiodic trigger offsets is defined in an information element of the NZP-CSI-RS-ResourceSet. The values in the aperiodic trigger offset set include one or more of: 8. 10, 12, 16, 20, 24, 32, 40, 48, 64, 96, 128, 256, 320, 512, 600, 800, 1024 and 2048.

For example, when no configuration signaling for defining the preparation period is configured (or no configuration for setting or defining the preparation period is set), then the slot offset between the slot in which the corresponding signal is transmitted and a reference slot is equal to 1 or 0, wherein the reference slot is one of: a slot where a DRX on-duration begins, with DRX operation configured; in case DRX operation is not configured, the PDCCH monitors the starting slot. The corresponding signal may be one of: a PDCCH-based power save signal, a sequence-based power save signal, a signal-based power save signal, a DCI-based power save signal, a signal for transmitting DCI or PDCCH.

For another example, the configuration signaling defining the preparation period is determined by at least one of: RRC signaling (or RRC configuration), MAC-CE signaling (or MAC-CE configuration), DCI signaling (or DCI configuration). More specifically, the configuration signaling for defining the preparation period is determined by one of: scheme 1, a combination of RRC signaling and DCI signaling, wherein a configuration of N preparation periods is defined by the RRC signaling, and a configuration of a preparation period of the configuration of N preparation periods is determined by the DCI signaling; scheme 2, a combination of RRC signaling, MAC-CE signaling, and DCI signaling, wherein a configuration of N preparation periods is defined by the RRC signaling, a configuration of M preparation periods out of the configuration of N preparation periods is defined by the MAC-CE signaling, and the configuration of a preparation period out of the configuration of M preparation periods is determined by the DCI signaling; scheme 3, a combination of RRC signaling and MAC-CE signaling, wherein the configuration of N preparation periods is defined by the RRC signaling, and the configuration of a preparation period of the configuration of N preparation periods is determined by the MAC-CE signaling; scheme 4, RRC signaling, wherein the configuration of the preparation period is determined by the RRC signaling; wherein N is a positive integer, and M is an integer less than or equal to N. For example, N equals 16 and M equals 8, or N equals 32 and M equals 8, or N equals 64 and M equals 16, or N equals 8 and M equals 4. And, DCI signaling is transmitted on the PDCCH-based energy saving signal.

And, the corresponding signal is a PDCCH-based power saving signal, which can be used to wake up the UE and trigger a preparation period. The PDCCH-based power saving signal may further include at least one of: CSI request, bandwidth part indicator, antenna port, DMRS sequence initialization, carrier indicator, SRS request, SS/PBCH index. Alternatively, the respective signal is a sequence-based power saving signal, wherein the power saving signal may be used to wake up the UE and trigger the preparation period. The sequence may be one of: tracking reference signals, auxiliary synchronization signals, main synchronization signals, tracking reference signals, demodulation reference signals and sounding reference signals.

For example, as shown in fig. 16, configuration signaling is sent at 1610, a PDCCH-based power save signal is sent at 1620, a preparation period is sent at 1630, including sending a CSI-RS resource set at 1680 and reporting CSI at 1690, at 1640, a DRX on duration state is activated (or started) if DRX operation is configured or the UE starts monitoring with a PDCCH cycle configured by the search space. For example, the configuration signaling at 1610 is sent by RRC signaling and indicates the configuration of the preparation period. For another example, the configuration signaling at 1610 is transmitted through RRC signaling and indicates the configuration of N preparation periods, and the PDCCH-based power saving signal at 1620 indicates the configuration of the preparation periods. As another more specific example, the configuration signaling at 1610 is transmitted through MAC-CE signaling and indicates the configuration of M preparation periods, and the PDCCH-based power saving signal at 1620 indicates the configuration of the preparation periods. As another example, the configuration signaling at 1610 is transmitted through MAC-CE signaling, and it indicates the configuration of the preparation period. N is equal to 16 or 32 and M is equal to 8 or 16. As another example, the configuration signaling at 1610 is sent through DCI signaling, and it indicates the configuration of the preparation period.

Example 18

In an embodiment of the gNB, as in fig. 4A, the configuration signaling sent at 410 includes a trigger state to define a preparation period, and wherein the trigger state indicates one or more of: reporting configuration identifier, QCL information. The reporting configuration identifier indicates a CSI resource configuration identifier indicating at least one of: TRS configuration, L1-RSRP calculation configuration, mobility management configuration and CSI acquisition configuration. The TRS configuration includes one or more of: NZP-CSI resource set identifier, NZP-CSI-RS resource, NZP-CSI-RS resource identifier, aperiodic trigger offset, or TRS information parameter; the L1-RSRP calculation configuration includes one or more of: NZP-CSI-ResourceSetId, NZP-CSI-RS-resources, NZP-CSI-RS-ResourceId, aperiodicTriggeringOffset, repetition parameter; the mobility management configuration includes one or more of: NZP-CSI resource set identifier, NZP-CSI-RS resource, NZP-CSI-RS resource identifier, aperiodic trigger offset, or CSI-RS resource mobility is configured; the CSI-RS acquisition configuration includes one or more of: nzp-CSI-ResourceSetId, nzp-CSI-RS-resources, nzp-CSI-RS-resource id, or aperiodic TriggeringOffset. Here, the repetition parameter indicates whether repetition is on/off. If the field is set to "OFF" or if the field is not present, the UE may not assume that the NZP-CSI-RS resources within the resource set are transmitted with the same downlink spatial domain transmission filter and with the same nroflort in each symbol; the TRS information parameter indicates that antenna ports of all NZP-CSI-RS resources in the CSI-RS resource set are the same. If this field does not exist or is released, the UE applies the value "false".

And, the reporting configuration identifier further indicates a CSI resource configuration identifier indicating an aperiodic trigger offset, wherein the aperiodic trigger offset is a time gap between a slot transmitting the set of CSI-RS resources and a reference slot, wherein the reference slot is one of: a time slot starting a DRX on duration, a time slot starting PDCCH monitoring, a time slot transmitting a CSI report, a time slot transmitting a corresponding signal. For example, if the reference slot is the slot (at slot 15) where the DRX on duration starts when DRX operation is configured, and the slot transmitting the CSI-RS resource set is located at slot 10, the aperiodic trigger offset is equal to 5 slots. As another example, when DRX operation is not configured, the reference slot is a slot (at slot 18) where PDCCH monitoring starts (PDCCH monitoring period and offset are configured by the search space), and the slot where the CSI-RS resource set is transmitted is located at slot 10, then the aperiodic trigger offset is equal to 8 slots. As another example, if the reference slot is the slot (at slot 5) where the CSI-RS report is sent and the slot where the set of CSI-RS resources is sent is located at slot 10, the aperiodic trigger offset is equal to 5 slots. As another example, if the reference slot is a slot (at slot 5) where a corresponding signal is transmitted and the slot where the set of CSI-RS resources is transmitted is located at slot 8, the aperiodic trigger offset is equal to 3 slots. The corresponding signal may be one of: a PDCCH-based power save signal, a sequence-based power save signal, a signal-based power save signal, a DCI-based power save signal, a signal for transmitting DCI or PDCCH.

Further, the reporting configuration identifier indicates a list of reporting slot offsets, wherein a reporting slot offset in the list of reporting slot offsets is a time gap between a slot containing a CSI report and a reference slot, wherein the reference slot is one of: a time slot starting with a DRX starting duration, a time slot starting with PDCCH monitoring, a time slot for sending a CSI-RS resource set, and a time slot for sending corresponding signals. For example, if the reference slot is the slot (at slot 15) where the DRX on duration starts when DRX operation is configured, and the slot containing the CSI report is located at slot 10, then the report slot offset is equal to 5 slots. As another example, when DRX operation is not configured, the reference slot is the slot (at slot 18) where PDCCH monitoring starts (the PDCCH monitoring period and offset are configured by the search space), and the slot containing the CSI report is located at slot 10, then the report slot offset is equal to 8 slots. As another example, if the reference slot is the slot (at slot 5) in which the set of CSI-RS resources is transmitted and the slot containing the CSI report is located in slot 10, then the report slot offset is equal to 5 slots. As another example, the reference slot is the slot (in slot 5) where the corresponding signal is sent, and the slot containing the CSI report is located in slot 8, then the report slot offset is equal to 3 slots. The corresponding signal may be one of: a PDCCH-based power save signal, a sequence-based power save signal, a signal-based power save signal, a DCI-based power save signal, a signal for transmitting DCI or PDCCH. The trigger state of the preparation period is only for the case where there is data or a scheduled PDSCH granted for the UE. If there is data or a scheduled PDSCH granted for the UE, the trigger state of the preparation period will be enabled and the UE detects the preparation period. In most cases, there is no data scheduled for the UE, and the detection preparation period is not required, the UE can reduce most of the power consumption.

For example, when the configuration signaling including the trigger state for defining the preparation period is not configured (or the trigger state of the preparation period is not set or defined or not configured), then the slot offset between the slot in which the corresponding signal is transmitted and the reference slot is equal to 1 or 0, wherein the reference slot is one of: a slot where a DRX on-duration begins, with DRX operation configured; in case DRX operation is not configured, the PDCCH monitors the starting slot. The corresponding signal may be one of: a PDCCH-based power save signal, a sequence-based power save signal, a signal-based power save signal, a DCI-based power save signal, a signal for transmitting DCI or PDCCH.

As another example, the trigger state is determined by at least one of: RRC signaling, MAC-CE signaling, DCI signaling. More specifically, the trigger state is determined by one of: scheme 1, a combination of RRC signaling and DCI signaling, wherein N trigger states are defined by the RRC signaling and a trigger state of the N trigger states is determined by the DCI signaling; scheme 2, a combination of RRC signaling, MAC-CE signaling, and DCI signaling, wherein N trigger states are defined by the RRC signaling, M of the N trigger states are defined by the MAC-CE signaling, and a trigger state of the M trigger states is determined by the DCI signaling; scheme 3, a combination of RRC signaling and MAC-CE signaling, wherein N trigger states are defined by the RRC signaling and a trigger state of the N trigger states is determined by the MAC-CE signaling; scheme 4, RRC signaling, wherein the trigger state is determined by RRC signaling. Where N is a positive integer, M is an integer less than or equal to N, e.g., N is equal to 16 and M is equal to 8, or N is equal to 32 and M is equal to 8, or N is equal to 64 and M is equal to 16, or N is equal to 8 and M is equal to 4.

In some embodiments, the respective signal is a PDCCH-based power save signal, wherein the power save signal may be used to wake up the UE and trigger a trigger state of the preparation period. The PDCCH-based power saving signal may further include at least one of: CSI request, bandwidth part indicator, antenna port, DMRS sequence initialization, carrier indicator, SRS request, SS/PBCH index. Alternatively, the respective signal is a sequence-based power saving signal, wherein the power saving signal may be used to wake up the UE and trigger a trigger state of the preparation period. The sequence may be one of: tracking reference signals, auxiliary synchronization signals, main synchronization signals, tracking reference signals, demodulation reference signals and sounding reference signals. QCL information includes one or more of the following: serving cell index, BWP ID, reference signal, and QCL type.

For example, as shown in fig. 16, configuration signaling is sent at 1610, a PDCCH-based power save signal is sent at 1620, a preparation period is sent at 1630, including sending a CSI-RS resource set at 1680 and reporting CSI at 1690, and a DRX on duration state is activated (or started) if DRX operation is configured or the UE starts monitoring with a PDCCH cycle configured by a search space at 1640. For example, the configuration signaling at 1610 is sent by RRC signaling and indicates the trigger state of the preparation period. For another example, the configuration signaling at 1610 is transmitted through RRC signaling and indicates the trigger state of N preparation periods, and the PDCCH-based power saving signal at 1620 indicates the trigger state of the preparation periods. As a more specific example, the configuration signaling at 1610 is transmitted through MAC-CE signaling and indicates the trigger states of M preparation periods, and the PDCCH-based power saving signal at 1620 indicates the trigger states of the preparation periods. As another example, the configuration signaling at 1610 is sent over MAC-CE signaling and indicates the trigger state of the preparation period. N is equal to 16 or 32 and M is equal to 8 or 16. As another example, the configuration signaling at 1610 is sent through DCI signaling and indicates the trigger state of the preparation period.

The CSI resource configuration identifier indicates an example of a TRS configuration. For a TRS (CSI-RS for tracking or tracking reference signals) configuration, a UE in RRC connected mode is expected to receive an upper layer UE specific configuration of NZP-CSI-RS-resource set configured with an upper layer parameter TRS-Info. For a NZP-CSI-RS-resource set configured with the higher layer parameter trs-Info, the UE should assume that the antenna ports with the same port index as the configured NZP CSI-RS resource in the NZP-CSI-RS-resource set are the same. For frequency range 1, the UE may be configured with one or more NZP-CSI-RS-resources esets, where a NZP-CSI-RS-resources eset comprises four periodic NZP CSI-RS resources in two consecutive time slots, with two periodic NZP CSI-RS resources in each time slot. For frequency range 2, the UE may be configured with one or more NZP-CSI-RS-resources esets, where a NZP-CSI-RS-resources eset comprises two periodic CSI-RS resources in one slot, or a NZP-CSI-RS-resources eset configured with four periodic NZP CSI-RS resources in two consecutive slots, with two periodic NZP CSI-RS resources in each slot. A UE configured with NZP-CSI-RS-resource set may have CSI-RS resources configured with a higher layer parameter trs-info as follows: 1) periodically, wherein CSI-RS resources in the NZP-CSI-RS-ResourceSet are configured with the same periodicity, bandwidth, and subcarrier location; 2) periodic CSI-RS resources in one set and aperiodic CSI-RS resources in a second set, wherein the aperiodic CSI-RS and periodic CSI-RS resources have the same bandwidth (have the same RB location), and where applicable, the aperiodic CSI-RS is 'QCL-Type-a' and 'QCL-Type' with periodic CSI-RS resources. For frequency range 2, the UE does not expect the scheduling Offset between the last symbol of the PDCCH carrying the triggering DCI and the first symbol of the aperiodic CSI-RS resource to be less than the threshold scheduled-Offset reported by the UE. The UE will expect that the periodic and aperiodic CSI-RS resource sets are configured with the same number of CSI-RS resources and the same number of CSI-RS resources in the slot. For an aperiodic CSI-RS resource set if triggered, and if the associated periodic CSI-RS resource set is configured with four periodic CSI-RS resources with two consecutive slots, with two periodic CSI-RS resources in each slot, the higher layer parameter aperiodictriggeringoffset indicates the trigger offset for the first slot of the first two CSI-RS resources in the set.

The CSI resource configuration identifier indicates an example of an L1-RSRP calculation configuration. For the L1-RSRP calculation configuration, if the UE is configured with a NZP-CSI-RS-resource set configured with a higher layer parameter repetition set to "on," the UE may assume that CSI-RS resources within the NZP-CSI-RS-resource set are transmitted using the same downlink spatial domain transmission filter, where the CSI-RS resources in the NZP-CSI-RS-resource set are transmitted in different OFDM symbols. If the repetition is set to "off," the UE should not assume that the CSI-RS resources within the NZP-CSI-RS-resources set were transmitted using the same downlink spatial domain transmission filter. If the UE is configured with a CSI-ReportConfig with reportQuantity set to "cri-RSRP" or "none", and if the CSI-ResourceConfig (higher layer parameter resource for channel measurement) contains NZP-CSI-RS-ResourceSet, which is configured with higher layer parameter repetition without higher layer parameter trs-info, the UE can only be configured with the same number (1 or 2) of ports with higher layer parameter nrofPort for all CSI-RS resources in the set. If the UE is configured with CSI-RS resources in the same OFDM symbol as the SS/PBCH block, the UE may assume that the CSI-RS and SS/PBCH blocks are quasi co-located with the 'QCL-type' if the 'QCL-type' is applicable. Furthermore, the UE should not expect to configure CSI-RS in PRBs overlapping with PRBs of the SS/PBCH block, and the UE should expect the same subcarrier spacing for both CSI-RS and SS/PBCH blocks.

The CSI resource configuration identifier indicates an example of a mobility management configuration. For Mobility management configuration, if the UE is configured with the higher layer parameter CSI-RS-Resource-Mobility and the higher layer parameter associatedSSB is not configured, the UE will perform measurements based on the CSI-RS-Resource-Mobility and the UE may base the timing of the CSI-RS Resource on the timing of the serving cell. If the UE is configured with the higher layer parameters CSI-RS-Resource-Mobility and associatedSSB, the UE may base the timing of the CSI-RS Resource on the timing of the cell given by the cellId configured by the CSI-RS Resource. In addition, for a given CSI-RS resource, if an associated SS/PBCH block is configured but not detected by the UE, the UE does not need to monitor the corresponding CSI-RS resource. The higher layer parameter, isQuasiColocated, indicates whether the associated SS/PBCH block and CSI-RS resources given by the associateSSB are quasi co-located with respect to [ 'QCL-type' ]. If the UE is configured with the high-layer parameter CSI-RS-Resource-Mobility and has a periodicity of more than 10ms in the paired spectrum, the UE may assume that the absolute value of the time difference between radio frames i between any two cells listed in the configuration with the high-layer parameter CSI-RS-CellMobilty and with the same refFreqCSI-RS is less than 153600 Ts. If the UE is configured with DRX, the UE is not required to perform measurements of CSI-RS resources except during active time for CSI-RS-Resource-Mobility based measurements. If the UE is configured with DRX and the DRX cycle in use is greater than 80ms, the UE may not expect the CSI-RS resources to be available except during active time for CSI-RS-Resource-Mobility based measurements. Otherwise, the UE may assume that CSI-RS is available for CSI-RS-Resource-Mobility based measurements.

The following examples are not limiting. Although specific communication devices are listed, other devices may be used in their place. In some example embodiments, the second wireless terminal is a base station, such as an enhanced node b (enb) or a next generation node b (gnb) or another base station. The first wireless terminal may be a user equipment, mobile terminal, handset, smartphone, cellular phone, or other mobile device.

Summary of the invention

The following clauses set forth the features of the various embodiments.

1. A method of wireless communication, comprising:

transmitting configuration signaling from the first wireless terminal to the second wireless terminal; and transmitting a respective signal to the second wireless terminal, wherein the respective signal is based on the configuration signaling.

2. The wireless communication method of clause 1, wherein the respective signal comprises at least a periodic signal comprising at least one of: a Synchronization Signal Block (SSB), a secondary synchronization signal, or a primary synchronization signal.

3. The wireless communication method of clause 2, wherein the configuration signaling comprises an SSB index.

4. The wireless communication method of clause 2, wherein the configuration signaling comprises an associated SSB, and the associated SSB comprises one or more of: SSB index, or quasi-co-located symbol.

5. The wireless communication method of clause 2, wherein the periodic signal is used at least for Radio Resource Management (RRM) measurements.

6. The wireless communication method of clause 2, wherein the configuration signaling includes at least a periodicity of the respective signal, and wherein the periodicity of the respective signal is equal to one of: a Discontinuous Reception (DRX) cycle, a DRX cycle multiplied by a value of N1, a DRX cycle divided by a value of N2, and N3 milliseconds;

wherein N1 is a positive integer greater than 1, N2 is a positive integer greater than 1, and N3 is a positive integer.

7. The wireless communication method of clause 1, wherein the respective signal is a Physical Downlink Control Channel (PDCCH) -based power save signal, wherein the power save signal is used to wake up a user equipment and trigger a preparation period.

8. The wireless communication method of clause 1, wherein the respective signal is a sequence-based power save signal, wherein the power save signal is used to wake up a user equipment and trigger a preparation period.

9. The wireless communication method of

clauses

1, 7 or 8, wherein the configuration signaling comprises configuration signaling defining a preparation period, and wherein the configuration signaling comprises one or more of: tracking Reference Signal (TRS) configuration, L1 layer-reference signal received power (L1-RSRP) calculation configuration, mobility management configuration, Channel State Information (CSI) acquisition configuration; wherein the content of the first and second substances,

the TRS configuration includes one or more of: non-zero power (NZP) -CSI resource set identifier, NZP-CSI-Reference Signal (RS) resource, NZP-CSI-RS resource identifier, aperiodic trigger offset, or TRS information parameter;

the L1-RSRP calculation configuration includes one or more of: NZP-CSI-resource set identifier (ResourceSetId), NZP-CSI-RS-resource (resources), NZP-CSI-RS-resource identifier (ResourceId), aperiodic trigger offset (aperiodtriggeringOffset), or repetition parameter;

the mobility management configuration includes one or more of: NZP-CSI resource set identifier, NZP-CSI-RS resource, NZP-CSI-RS resource identifier, aperiodic trigger offset, or CSI-RS resource mobility;

the CSI-RS acquisition configuration includes one or more of: NZP-CSI-ResourceSetId, NZP-CSI-RS-resources, NZP-CSI-RS-ResourceId, or aperiodicTriggeringOffset.

11. The wireless communication method of

clause

1, 7 or 8, wherein the configuration signaling comprises configuration signaling defining a preparation period, and wherein the configuration signaling comprises a CSI resource offset, wherein the CSI resource offset is a time gap between a slot transmitting a set of CSI-RS resources and a reference slot, wherein the reference slot is one of:

time slots where DRX on duration starts;

a time slot for PDCCH monitoring to start;

a time slot for transmitting a CSI report;

a time slot in which the corresponding signal is transmitted.

12. The wireless communication method of

clause

1, 7 or 8, wherein the configuration signaling comprises configuration signaling defining a preparation period, and wherein the configuration signaling comprises a reporting slot offset, wherein the reporting slot offset is a time gap between a slot containing a CSI report and a reference slot, wherein the reference slot is one of:

time slots where DRX on duration starts;

a time slot for PDCCH monitoring to start;

transmitting a time slot of a CSI-RS resource set;

the time slot in which the corresponding signal is transmitted.

13. The wireless communication method according to any one of clauses 7 to 12, wherein, when configuration signaling for defining a preparation period is not configured, then a slot offset between a slot in which the corresponding signal is transmitted and a reference slot is equal to 1, wherein the reference slot is one of: time slots where DRX on duration starts; the PDCCH monitors the starting slot.

14. The wireless communication method of any of clauses 7 to 12, wherein the configuration signaling defining the preparation period is determined by at least one of: RRC signaling, medium access control-control element (MAC-CE) signaling, Downlink Control Information (DCI) signaling.

15. The wireless communication method of clause 14, wherein the configuration signaling defining the preparation period is determined by one of:

a combination of RRC signaling and DCI signaling, wherein a configuration of the N preparation periods is defined by the RRC signaling, and a configuration of a preparation period of the configuration of the N preparation periods is determined by the DCI signaling;

a combination of RRC signaling, MAC-CE signaling, and DCI signaling, wherein a configuration of N preparation periods is defined by the RRC signaling, a configuration of M preparation periods of the configuration of N preparation periods is defined by the MAC-CE signaling, and the configuration of the preparation period of the configuration of M preparation periods is determined by the DCI signaling;

a combination of RRC signaling and MAC-CE signaling, wherein a configuration of the N preparation periods is defined by the RRC signaling, and a configuration of the preparation period of the configuration of the N preparation periods is determined by the MAC-CE signaling;

RRC signaling, wherein the configuration of the preparation period is determined by the RRC signaling;

wherein N is a positive integer, and M is an integer less than N.

16. The wireless communication method of clause 14 or 15, wherein the DCI signaling is transmitted on a PDCCH-based power save signal.

17. The wireless communication method of clause 1, wherein the configuration signaling includes a trigger state for defining a preparation period, and wherein the trigger state indicates one or more of: reporting configuration identifier, quasi co-location (QCL) information.

18. The method of wireless communication of clause 17, wherein the reporting configuration identifier indicates a CSI resource configuration identifier (Id), wherein the CSI resource configuration Id indicates at least one of: TRS configuration, L1-RSRP calculation configuration, mobility management configuration and CSI acquisition configuration; wherein the content of the first and second substances,

the TRS configuration includes one or more of: NZP-CSI resource set identifier, NZP-CSI-RS resource, NZP-CSI-RS resource identifier, aperiodic trigger offset, or TRS information parameter;

the L1-RSRP calculation configuration includes one or more of: NZP-CSI-ResourceSetId, NZP-CSI-RS-resources, NZP-CSI-RS-ResourceId, aperiodicTriggeringOffset, or repetition parameter;

19. The wireless communications method of clause 17, wherein the reporting configuration identifier indicates a CSI resource configuration Id, wherein the CSI resource configuration Id indicates an aperiodic trigger offset, wherein the aperiodic trigger offset is a time gap between a slot transmitting a set of CSI-RS resources and a reference slot, wherein the reference slot is one of:

time slots where DRX on duration starts;

a time slot for PDCCH monitoring to start;

a time slot for transmitting a CSI report;

the time slot in which the corresponding signal is transmitted.

20. The wireless communications method of clause 17, wherein the reporting configuration identifier indicates a list of reporting slot offsets, wherein a reporting slot offset in the list of reporting slot offsets is a time gap between a slot containing a CSI report and a reference slot, wherein the reference slot is one of:

time slots where DRX on duration starts;

a time slot for PDCCH monitoring to start;

transmitting a time slot of a CSI-RS resource set;

the time slot in which the corresponding signal is transmitted.

21. The wireless communication method of clause 17, wherein the trigger state is determined by at least one of: RRC signaling, MAC-CE signaling, DCI signaling.

22. The wireless communication method of clause 21, wherein the trigger state is determined by one of:

a combination of RRC signaling and DCI signaling, wherein N trigger states are defined by the RRC signaling and a trigger state of the N trigger states is determined by the DCI signaling;

a combination of RRC signaling, MAC-CE signaling, and DCI signaling, wherein N trigger states are defined by the RRC signaling, M of the N trigger states are defined by the MAC-CE signaling, and a trigger state of the M trigger states is determined by the DCI signaling;

a combination of RRC signaling and MAC-CE signaling, wherein N trigger states are defined by the RRC signaling and a trigger state of the N trigger states is determined by the MAC-CE signaling;

RRC signaling, wherein the trigger state is determined by the RRC signaling;

wherein N is a positive integer, and M is an integer less than N.

23. The wireless communication method of clause 21 or 22, wherein the DCI signaling is transmitted on a PDCCH-based power save signal.

24. The wireless communication method of clause 17, wherein the QCL information comprises one or more of: a serving cell index, a bandwidth part identifier (BWP ID), a reference signal, and a QCL type.

25. The wireless communication method of clause 1, wherein the configuration signaling includes a slot offset threshold.

26. The wireless communications method of clause 25, wherein the slot offset threshold comprises one or more of:

a time slot offset threshold of a Physical Downlink Shared Channel (PDSCH);

a slot offset threshold for a Physical Uplink Shared Channel (PUSCH);

a PDSCH to hybrid automatic repeat request (HARQ) slot offset threshold;

a slot offset threshold of an aperiodic channel state information reference signal (CSI-RS);

a threshold value of PDSCH decoding time;

a threshold value of PUSCH preparation time;

channel State Information (CSI) calculates a threshold for delay.

27. The wireless communication method of clause 1, wherein the configuration signaling comprises:

configuring a PDCCH-based energy saving signal;

configuration of a sequence-based power save signal; and

configuration of the preparation period.

28. The method of wireless communication of clause 27, wherein the configuration signaling is determined by a predefined set of resources.

29. The wireless communications method of clause 28, wherein the predefined set of resources includes at least one of: frequency range, BWP index, type of Radio Network Temporary Identifier (RNTI), DRX parameters.

30. The wireless communication method of clause 29, wherein when the frequency range is FR1, then the configuration signaling is a configuration of a PDCCH-based power save signal or a configuration of a sequence-based power save signal, and wherein when the frequency range is FR2, then the configuration signaling is a configuration of a preparation period.

31. The wireless communication method of any of clauses 1-30, wherein the configuration signaling is enabled by at least one of: RRC signaling, MAC-CE signaling, or DCI signaling.

32. A method of wireless communication, comprising: receiving configuration signaling from the first wireless terminal at the second wireless terminal; and receiving a respective signal from the first wireless terminal, wherein the respective signal is based on the configuration signaling. Various examples of configuration signaling and additional operations are similar to those described in clauses 1 to 31.

33. The wireless communication method of any of clauses 1 to 32, wherein the first wireless terminal is a base station of a cellular network, and wherein the second wireless terminal is a user equipment of the cellular network.

34. A wireless communications apparatus comprising a processor configured to implement the method recited in any one or more of clauses 1-33.

35. A computer program product having code stored thereon, the code comprising instructions to cause a processor to implement a method as recited in any one or more of clauses 1-33.

From the foregoing, it will be appreciated that specific embodiments of the presently disclosed technology have been described herein for purposes of illustration, but that various modifications may be made without deviating from the scope of the invention. Accordingly, the techniques of this disclosure are not limited, except as by the appended claims.

The and other embodiments, modules, and functional operations disclosed herein may be implemented in digital electronic circuitry, or in computer software, firmware, or hardware, including the structures disclosed herein and their structural equivalents, or in combinations of one or more of them. The disclosed and other embodiments may 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 combination of matter effecting a machine-readable propagated signal, or a combination of one or more of them. The term "data processing apparatus" includes 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 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 herein 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 executing 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 a device. 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, such as 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.

While this patent document contains many specifics, these should not be construed as limitations on the scope of any invention or of what may be claimed, but rather as descriptions of features that may be specific to particular embodiments of particular inventions. Certain features that are described in this patent 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 subcombination. Furthermore, 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 cases be excised from the combination, and the claimed combination may be directed to a subcombination or variation of a subcombination.

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. Moreover, the separation of various system components in the embodiments described in this patent document should not be understood as requiring such separation in all embodiments.

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

Claims

1. A method of wireless communication, comprising:

transmitting configuration signaling from the first wireless terminal to the second wireless terminal; and the number of the first and second groups,

transmitting a respective signal to the second wireless terminal, wherein the respective signal is based on the configuration signaling.

2. The wireless communication method of claim 1, wherein the respective signal comprises at least a periodic signal comprising at least one of: a Synchronization Signal Block (SSB), a secondary synchronization signal, or a primary synchronization signal.

3. The wireless communication method of claim 2, wherein the configuration signaling comprises an SSB index.

4. The wireless communication method of claim 2, wherein the configuration signaling comprises an associated SSB, and the associated SSB comprises one or more of: SSB index, or quasi-co-located symbol.

5. The wireless communication method of claim 2, wherein the periodic signal is used at least for radio resource management measurements.

6. The wireless communication method of claim 2, wherein the configuration signaling includes at least a periodicity of the respective signal, and wherein the periodicity of the respective signal is equal to one of: a Discontinuous Reception (DRX) cycle, a DRX cycle multiplied by a value of N1, a DRX cycle divided by a value of N2, and N3 milliseconds;

7. The wireless communication method of claim 1, wherein the respective signal is a Physical Downlink Control Channel (PDCCH) -based power save signal, wherein the power save signal is used to wake up a user equipment and trigger a preparation period.

8. The wireless communication method of claim 1, wherein the respective signal is a sequence-based power save signal, wherein the power save signal is used to wake up a user equipment and trigger a preparation period.

9. The wireless communication method of claim 1, 7 or 8, wherein the configuration signaling comprises configuration signaling defining a preparation period, and wherein the configuration signaling comprises one or more of: tracking Reference Signal (TRS) configuration, L1 layer-reference signal received power (L1-RSRP) calculation configuration, mobility management configuration, Channel State Information (CSI) acquisition configuration; wherein the content of the first and second substances,

10. The wireless communications method of claim 1, 7 or 8, wherein the configuration signaling comprises configuration signaling defining a preparation period, and wherein the configuration signaling comprises a CSI resource offset, wherein the CSI resource offset is a time gap between a slot transmitting a set of CSI-RS resources and a reference slot, wherein the reference slot is one of:

time slots where DRX on duration starts;

a time slot for PDCCH monitoring to start;

a time slot for transmitting a CSI report;

a time slot in which the corresponding signal is transmitted.

11. The wireless communication method of claim 1, 7 or 8, wherein the configuration signaling comprises configuration signaling defining a preparation period, and wherein the configuration signaling comprises a reporting slot offset, wherein the reporting slot offset is a time gap between a slot containing a CSI report and a reference slot, wherein the reference slot is one of:

time slots where DRX on duration starts;

a time slot for PDCCH monitoring to start;

transmitting a time slot of a CSI-RS resource set;

a time slot in which the corresponding signal is transmitted.

12. The wireless communication method according to any of claims 7 to 11, wherein when no configuration signaling is configured for defining a preparation period, then a slot offset between a slot in which the respective signal is transmitted and a reference slot is equal to 1, wherein the reference slot is one of: time slots where DRX on duration starts; the PDCCH monitors the starting slot.

13. The wireless communication method of any of claims 7 to 11, wherein configuration signaling defining a preparation period is determined by at least one of: RRC signaling, medium access control-control element (MAC-CE) signaling, Downlink Control Information (DCI) signaling.

14. The wireless communication method of claim 13, wherein configuration signaling defining a preparation period is determined by one of:

wherein N is a positive integer, and M is an integer less than N.

15. The wireless communication method of claim 13 or 14, wherein the DCI signaling is transmitted on a PDCCH-based power save signal.

16. The wireless communication method of claim 1, wherein the configuration signaling comprises a trigger state to define a preparation period, and wherein the trigger state indicates one or more of: reporting configuration identifier, quasi co-location (QCL) information.

17. The wireless communication method of claim 16, wherein the reporting configuration identifier indicates a CSI resource configuration identifier (Id), wherein the CSI resource configuration Id indicates at least one of: TRS configuration, L1-RSRP calculation configuration, mobility management configuration and CSI acquisition configuration; wherein the content of the first and second substances,

18. The wireless communications method of claim 16, wherein the reporting configuration identifier indicates a CSI resource configuration Id, wherein the CSI resource configuration Id indicates an aperiodic trigger offset, wherein the aperiodic trigger offset is a time gap between a slot transmitting a set of CSI-RS resources and a reference slot, wherein the reference slot is one of:

time slots where DRX on duration starts;

a time slot for PDCCH monitoring to start;

a time slot for transmitting a CSI report;

a time slot in which the corresponding signal is transmitted.

19. The wireless communications method of claim 16, wherein the reporting configuration identifier indicates a list of reporting slot offsets, wherein a reporting slot offset in the list of reporting slot offsets is a time gap between a slot containing a CSI report and a reference slot, wherein the reference slot is one of:

time slots where DRX on duration starts;

a time slot for PDCCH monitoring to start;

transmitting a time slot of a CSI-RS resource set;

a time slot in which the corresponding signal is transmitted.

20. The wireless communication method of claim 16, wherein the trigger state is determined by at least one of: RRC signaling, MAC-CE signaling, DCI signaling.

21. The wireless communication method of claim 20, wherein the trigger state is determined by one of:

RRC signaling, wherein the trigger state is determined by the RRC signaling;

wherein N is a positive integer, and M is an integer less than N.

22. The wireless communication method of claim 20 or 21, wherein the DCI signaling is transmitted on a PDCCH-based power save signal.

23. The wireless communication method of claim 16, wherein the QCL information comprises one or more of: a serving cell index, a bandwidth part identifier (BWPID), a reference signal, and a QCL type.

24. The wireless communication method of claim 1, wherein the configuration signaling comprises a slot offset threshold.

25. The wireless communications method of claim 24, wherein the slot offset threshold comprises one or more of:

a time slot offset threshold of a Physical Downlink Shared Channel (PDSCH);

a slot offset threshold for a Physical Uplink Shared Channel (PUSCH);

a PDSCH to hybrid automatic repeat request (HARQ) slot offset threshold;

a threshold value of PDSCH decoding time;

a threshold value of PUSCH preparation time;

channel State Information (CSI) calculates a threshold for delay.

26. The wireless communication method of claim 1, wherein the configuration signaling comprises:

configuring a PDCCH-based energy saving signal;

configuration of a sequence-based power save signal; and

configuration of the preparation period.

27. The wireless communications method of claim 26, wherein the configuration signaling is determined by a predefined set of resources.

28. The wireless communications method of claim 27, wherein the predefined set of resources includes at least one of: frequency range, BWP index, type of Radio Network Temporary Identifier (RNTI), DRX parameters.

29. The wireless communication method of claim 28, wherein when the frequency range is FR1, then the configuration signaling is a configuration of a PDCCH-based power save signal or a sequence-based power save signal, and wherein when the frequency range is FR2, then the configuration signaling is a configuration of a preparation period.

30. The wireless communication method of any of claims 1 to 29, wherein the configuration signaling is enabled by at least one of: RRC signaling, MAC-CE signaling, or DCI signaling.

31. A method of wireless communication, comprising:

receiving configuration signaling from the first wireless terminal at the second wireless terminal; and

receiving a respective signal from the first wireless terminal, wherein the respective signal is based on the configuration signaling.

32. The wireless communication method of any of claims 1 to 31, wherein the first wireless terminal is a base station of a cellular network, and wherein the second wireless terminal is a user equipment of a cellular network.

33. A wireless communication apparatus comprising a processor configured to implement the method of any one or more of claims 1-32.

34. A computer program product having code stored thereon, the code comprising instructions for causing a processor to implement the method of any one or more of claims 1 to 33.