CN113396638B - Low power consumption cellular radio terminal - Google Patents
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- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
In one aspect, a method of wireless communication is described. The method includes transmitting configuration signaling 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 signals comprise periodic signals comprising at least one of: SSB (synchronization signal block), secondary synchronization signal, and primary synchronization signal.
Description
Technical Field
This patent document relates generally to wireless communications.
Background
Mobile communication technology is advancing the world to increasingly connected and networked society. The rapid growth of mobile communications and advances in technology have led to 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 of providing 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 device are disclosed.
In one aspect, a method of wireless communication is disclosed. The method includes transmitting configuration signaling 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 includes the second wireless terminal receiving configuration signaling from the first wireless terminal; and receiving a respective signal from the first wireless terminal, wherein the respective signal is based on the configuration signaling.
The details of one or more implementations are set forth in the accompanying 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 in accordance with 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 enter 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, according to 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 through Radio Resource Control (RRC) in accordance with some example embodiments;
fig. 12 depicts an example of a process for configuring parameters with UE assistance information through a media access control-control element (MAC-CE), according to some example embodiments;
fig. 13 depicts an example of a procedure 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 WUS (or WUP) signals with PDCCH monitoring configuration (search space configuration) in accordance with 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 a 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 do not 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 a 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 experience, the large power consumption of the UE results in an undesirable user experience. In existing 5G communication systems, configuration parameters of a UE are generally configured by network-side devices, such as a base station. Parameters configured by the network-side device may not adapt quickly to the instantaneous traffic changes. In the case where the configuration parameters are not updated or reconfigured based on traffic, the parameters may configure the UE to have the adverse effect of unnecessarily increasing power consumption.
In a 5G New Radio (NR) communication system, the power consumption of 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 can accommodate conventional traffic. However, current systems cannot 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 herein.
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. After the base station acquires the UE capability information, the base station configures UE parameters and schedules the UE according to a scheduling algorithm and a channel state. Techniques for configuring a UE to perform ultra low latency communications, ultra reliable communications, large scale machine type communications (mMTC), and enhanced mobile broadband (eMBB) while conserving power at the UE are disclosed. 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 a power saving state according to one or more preset parameters. The configuration parameters include at least one of: slot offset threshold, number of slots, power save signal, reference signal, activation/deactivation of carrier aggregation/dual connectivity, RRC parameter or MAC-CE parameter.
The UE configuration parameters include: 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. After receiving the UE capability information, the base station configures parameters for the UE and schedules communication resources according to the scheduling strategy and the channel state information.
In some example embodiments, the base station sets the UE to a power save 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 parameters, unnecessary power consumption may occur at the UE when switching to use in an eMBB.
The disclosed technology provides implementations 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 save 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 from UEs 111, 112, and 113, respectively, to BS 120, enabling subsequent communications to the UE via messages 141, 142, 143. The UE may be, for example, a smart phone, 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 a base station 120 or a wireless device, such as UEs 111, 112 and/or 113, may include processor electronics 220, such as a microprocessor, that implements one or more of the 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 device 210 may include other communication interfaces for transmitting 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 implementations, the processor electronics 220 may include at least a portion of the 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 transmits a UE capability query to a UE. After receiving the capability query of the network side equipment, the UE reports its own capability information, which may be referred to as UE capability information. The parameter value related to the maximum UE capability is included in the 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 channel state information. However, some configuration parameter values may result in unnecessary power consumption. For example, parameter values used to configure a UE to perform URLLC may result in unnecessary power consumption when used in an 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/wireline 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 wireless 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 a procedure 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. One or more configuration parameters are associated with configuration signaling. At 420, based on the configuration signaling, the gNB performs a transmission with the UE (sends a corresponding signal to the UE). In some implementations, the configuration signaling may include at least one of: slot offset threshold configuration, configuration of power save signals, configuration of reference signals, configuration of activation/deactivation of carrier aggregation/dual connectivity, DRX parameters, RRC parameters, and/or MAC-CE parameters. Parameters at 410 are detailed below.
The slot offset threshold configuration may include a slot offset threshold. The slot offset threshold may include at least one of the following parameters: a time slot offset threshold for a Physical Downlink Shared Channel (PDSCH), a time slot offset threshold for a Physical Uplink Shared Channel (PUSCH), a time slot offset threshold for PDSCH to hybrid automatic repeat request (HARQ), a time slot offset threshold for an aperiodic channel state information reference signal (CSI-RS), a threshold for PDSCH decoding time, a threshold for PUSCH preparation time, a threshold for Channel State Information (CSI) computation delay.
The power saving signal may include: wake-up signals and/or go to sleep signals.
The reference signal may include at least one of: tracking reference signal, synchronization Signal Block (SSB) reference signal, secondary synchronization signal, primary synchronization signal, or CSI reference signal.
The configuration of activation/deactivation of carrier aggregation/dual connectivity (CA/DC) may be determined by scheduling Downlink Control Information (DCI). Scheduling DCI may include at least one of: DCI format 0_0, DCI format 0_1, DCI format 1_0, DCI format 1_1. Since HARQ (ACK/NACK) must be reported to the gNB for PDSCH scheduled by scheduling DCI, the UE and the gNB have the same understanding of the state of CA/DC, so the UE may reduce some power consumption.
The Radio Resource Control (RRC) parameters may include at least one of: a Physical Downlink Control Channel (PDCCH) monitoring period, search space, or 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: slot offset threshold configuration, configuration of a power save signal, configuration of a reference signal, configuration of activation/deactivation of carrier aggregation/dual connectivity, RRC parameters, or MAC-CE parameters.
Discontinuous Reception (DRX) may be used to reduce User Equipment (UE) power consumption. In DRX, the base station (or gnob or gNB) configures a DRX cycle for the UE. 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 operating state and performs transmission and reception of data and control information. Otherwise, the UE remains in an inactive state (does not monitor 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 saving at a UE by including different parameters obtained for the gNB. Embodiments for saving energy via processing at a UE are also provided.
In some example embodiments, the configuration signaling includes 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 the following: a time slot offset threshold for a Physical Downlink Shared Channel (PDSCH), a time slot offset threshold for a Physical Uplink Shared Channel (PUSCH), a time slot offset threshold for PDSCH to hybrid automatic repeat request (HARQ), a time slot offset threshold for an aperiodic channel state information reference signal (CSI-RS), a threshold for PDSCH decoding time, a threshold for PUSCH preparation time, or a threshold for Channel State Information (CSI) computation delay.
Example one
In this embodiment for a 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 gNB. The slot offset threshold is the minimum slot offset available for scheduling (grants) within the gNB. If the gNB configures the UE with a slot offset threshold, the gNB will schedule a slot offset greater than or equal to the slot offset threshold. For example, if the list of slot offset values is {0 2 4 6}, then the slot offset {2 4 } can be used for scheduling when the slot offset threshold is equal to 2, and for example, the slot offset {4 6} can 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 for the URLLC service is sent, 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, for example equal to 1, 2, 3, 4, 6, 8, 10, 12, or 16. If the slot offset threshold is greater than 0, then it is referred to as "cross-slot scheduling". During slot offset, the UE may enter sleep (e.g., microsleep or shallowly sleep) as soon as possible after receiving the last Orthogonal Frequency Division Multiplexing (OFDM) symbol of the PDCCH, and may reduce power consumption.
For another example, the slot offset threshold may be determined by one of the following parameters: bandwidth part (BWP) configuration, BWP index, or cell configuration. For example, if BWP is configured as initial BWP or default BWP or power-saving BWP, the slot offset threshold may be greater than 0, e.g., 1, 2, 3, 4, 6 or 8, e.g., if BWP index is equal to 0 or BWP index is equal to 1, the slot offset threshold is greater than 0, e.g., 1, 2, 3, 4, 6 or 8, and initial Downlink (DL) BWP is defined by the location and number of consecutive Physical Resource Blocks (PRBs) starting from PRBs having the lowest index among PRBs in the control resource set for Type0-PDCCH common search space and ending at PRBs having the highest index, and subcarrier spacing and cyclic prefix for PDCCH reception in the control resource set for Type0-PDCCH common search space. The initial DL BWP may also be provided by a high-level parameter such as initial downlink BWP. For dedicated BWP configuration, the UE may be provided with the first DL BWP for reception by the higher layer parameter first actiondownlink BWP-Id and with the first UL BWP for transmission on the primary cell by the higher layer parameter first actionuplink BWP-Id. In the configured DL BWP, the default DL BWP may be configured by a higher layer parameter such as defaultDownlinkBWP-Id, or it may be defined as an initial DL BWP. Among the configured BWP, the energy-saving BWP has a minimum bandwidth. In some embodiments, CSI measurements and periodic CSI reports may be made for low power BWP and uplink or downlink grants are allowed. Some instant messaging applications (e.g., weChat) send or receive small data payloads. Because of its very small bandwidth, energy-efficient BWP 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 5MHz. In another example of energy-efficient BWP, its bandwidth is smallest in the configured BWP. For example, the bandwidth of the configured BWP is {5MHz,10MHz,15MHz,20MHz }, and the bandwidth of the energy-saving BWP is set to 5MHz.
For 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. Also for example, the slot offset threshold of the initial BWP or default BWP or power save BWP is greater than the slot offset threshold of the dedicated BWP, e.g., the slot offset threshold of the initial BWP or 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. The UE may perform Channel Quality Indicator (CQI) measurements and reporting while the SCell is in a dormant state, albeit with a very sparse period. 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.
For 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 a slot offset threshold for an inactive cell or a dormant cell of 2, 4, or 8, and a slot offset threshold for an active cell of 0 or 1.
For another example, the slot offset threshold may be determined by: UE assistance information and a time domain configuration list. Fig. 9 shows a procedure for using configuration parameters of UE assistance information. As shown in fig. 9, the network device first transmits 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: a preferred slot offset threshold, a preferred slot offset index, a differential slot offset threshold. The preferred slot offset threshold in the UE assistance information is a 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 the appropriate value as the preferred slot offset threshold. The appropriate value is greater than or equal to a UE preferred slot offset threshold, such as 1,4, or 6.
For 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.
For 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 an embodiment of the UE, 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 {0 2 4 6}, then the slot offset {2, 4, 6} may be used for data scheduling when the slot offset threshold is equal to 2, and the slot offset {4 6} may be used for data scheduling when the slot offset threshold is equal to 4. If data traffic for the URLLC service is sent, the slot offset threshold may be equal to 0 or the slot offset threshold may be disabled. In other cases, the slot offset threshold may be an integer greater than 0, such as 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 slot offset, the UE may go to sleep (e.g., microsleep or shallowly 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 a parameter for the UE received in fig. 4B.
The slot offset threshold may be defined for at least one of: a slot offset threshold for PDSCH, a slot offset threshold for PUSCH, a slot offset threshold for PDSCH to HARQ, a slot offset threshold for aperiodic CSI-RS, a threshold for PDSCH decoding time, a threshold for PUSCH preparation time, a threshold for CSI computation delay. The slot offset threshold is described as follows.
Example 1a
The slot offset threshold is the slot offset threshold (k 0) of PDSCH. The slot offset (k 0) of PDSCH is defined as the time gap between PDCCH and its scheduled PDSCH. Also, the slot offset threshold of the PDSCH is defined as the minimum 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 (k 0) of PDSCH.
Fig. 5 shows an example of cross-slot scheduling for PDSCH with k0 greater than 0, the slot offset threshold (k 0) 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 slot offset threshold of the PDSCH. The signal in the Physical Downlink Control Channel (PDCCH) 302 at slot 0 is monitored and decoded (blind decoded) to obtain DCI. The DCI indicates the location of PDSCH 304 at slot 2 and during slot offset 312, the UE goes to sleep, thereby reducing power consumption.
In one embodiment for a UE, the parameter received at 430 is a slot offset threshold. The slot offset threshold is defined as the slot offset threshold (k 0) of PDSCH. The slot offset (k 0) of PDSCH is defined as the time gap between PDCCH and its scheduled PDSCH. The UE has 2 states: sleep states (for power saving, e.g. microsleep, light sleep or deep sleep) and active states (high power for signal reception/processing). Only a significant portion of the time and energy of the slot occupancy with PDCCH monitoring (without any scheduling grants and PDSCH/PUSCH/PUCCH). For ease of reference, the case where the UE monitors only PDCCH without any scheduling grant and PDSCH/PUSCH/PUCCH is referred to as a PDCCH-only monitored case. If the UE does not know the cross-slot scheduling of the PDSCH in advance, it is necessary to receive the remaining OFDM symbols corresponding to the PDCCH decoding time, and unnecessary power consumption may be caused. In the case of PDCCH-only monitoring, radio Frequency (RF) dominates the overall power consumption. Sleep state (microsleep) may be the most efficient power saving scheme in case of PDCCH monitoring only. During microsleep, the RF component is turned off when no grant is detected within the time slot. If the UE knows the slot offset threshold (cross-scheduling of PDSCH) in advance, it may go to sleep (e.g., microsleep) as soon as possible after receiving the last OFDM symbol of PDCCH and may reduce power consumption, as shown in fig. 5, the UE may 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 (k 2) of PUSCH. The slot offset (k 2) of PUSCH is the time gap between PDCCH and its scheduled PUSCH. And, the slot offset threshold of PUSCH is the minimum slot offset of PUSCH in the time domain configuration list of PUSCH available for scheduling. The time domain configuration list of PUSCH contains a set of slot offsets (k 2) of PUSCH.
In one embodiment for a UE, the parameter received at 430 is a slot offset threshold. The slot offset threshold is a slot offset threshold (k 2) of PUSCH. The slot offset (k 2) of PUSCH is the time gap between PDCCH and its scheduled PUSCH. The UE has 2 states: sleep state and active state. Only the time slots with PDCCH monitoring (without any scheduling grants and PUSCH) occupy a significant portion of the time and energy. If the UE knows the slot offset threshold (cross-scheduling for PUSCH) in advance, it may go to sleep (such as microsleep) after receiving the last OFDM symbol of the PDCCH, and may reduce power consumption.
Example 1c
The slot offset threshold is a PDSCH to HARQ slot offset threshold (k 1). The PDSCH-to-HARQ slot offset (k 1) is the time gap between PDSCH and its HARQ. Also, the PDSCH-to-HARQ slot offset threshold is the minimum slot offset of PDSCH-to-HARQ in a given PDSCH-to-DL ACK (DL-DataToUL-ACK) timing list, which can be used for scheduling. A given PDSCH-to-DL ACK (DL-DataToUL-ACK) timing list contains a set of 8 slot offsets (k 1) for PDSCH-to-HARQ.
In one embodiment for a UE, the parameter received at 430 is a slot offset threshold. The slot offset threshold is a PDSCH to HARQ slot offset threshold (k 1). The PDSCH-to-HARQ slot offset (k 1) is the time gap between PDSCH and its HARQ. If the UE knows the slot offset threshold (cross-scheduling for PUSCH) in advance, it may go to sleep (such as microsleep) after receiving the last OFDM symbol of the PDCCH, and may reduce power consumption.
Example 1d
Slot offset threshold the slot offset threshold of the aperiodic CSI-RS. The slot offset of the aperiodic CSI-RS is the time gap between PDCCH and aperiodic CSI-RS occasions. The slot offset threshold of the aperiodic CSI-RS is the smallest slot offset of the aperiodic CSI-RS in the slot offset list of the aperiodic CSI-RS that can be used for scheduling.
Example 1e
The slot offset threshold is a slot offset threshold of PDSCH decoding time. If the first uplink symbol of the PUCCH carrying hybrid automatic repeat request acknowledgement (HARQ-ACK) information is not earlier than symbol L 1 Initially, the UE will provide a valid HARQ-ACK message in which the first uplink symbol of the PUCCH is clocked by the assigned HARQ-ACK timing K 1 And PUCCH resource definition to be used and including the impact of timing advance, where L 1 After the last symbol end of the PDSCH carrying the TB is acknowledged, its CP is after the following equation represents timeThe next upstream symbol to be started is a symbol,
T proc,1 ＝(N 1 +d 1,1 )(2048+144)·κ2 -μ ·T C equation 1.
PDSCH decoding time is defined as N 1 。T proc,1 The value of (2) represents the minimum processing time of PDSCH. The value of μ is defined as the subcarrier spacing index (0 corresponds to 15KHz,1 corresponds to 30KHz,2 corresponds to 60KHz,3 corresponds to 120KHz,4 corresponds to 240KHz,5 corresponds to 480 KHz). Kappa is equal to 64.T (T) c The value of (2) may be defined as T c ＝1/(Δf max ·N f ) Wherein Δf max ＝480·10 3 Hz and N f ＝4096。d 1,1 The value of (c) is 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 1,1 =7-i, otherwise d 1,1 ＝0。
Example 1f
The slot offset threshold is a slot offset threshold of PUSCH preparation time. If the first uplink symbol in the PUSCH allocation for a transport block is not earlier than symbol L 2 At that point, the UE will send a transport block in which the first uplink symbol includes a dedicated demodulation reference signal (DM-RS), e.g., by slot offset K 2 And scheduling a Start and Length Indicator Value (SLIV) of the DCI, wherein L 2 Defined as the next uplink symbol whose Cyclic Prefix (CP) starts at the time represented by the following equation after the end of the last symbol of the PDCCH carrying DCI scheduling PUSCH,
T proc,2 ＝max((N 2 +d 2,1 )(2048+144)·κ2 -μ ·T C ,d 2,2 ) Equation 2.
The PUSCH preparation time is defined as N 2 。T proc,2 The value of (2) represents the minimum processing time of PUSCH. The value of μ is defined as the subcarrier spacing index (0 corresponds to 15KHz,1 corresponds to 30KHz,2 corresponds to 60KHz,3 corresponds to 120KHz,4 corresponds to 240KHz,5 corresponds to 480 KHz). Kappa is equal to 64.T (T) c The value of (1) is defined as T c ＝1/(Δf max ·N f ) Wherein Δf max ＝480·10 3 Hz and N f ＝4096。d 2,1 Is determined by PUSCH and DM-RS, e.g., d if the first symbol of PUSCH allocation (PUSCH allocation) includes only DM-RS 2,1 =0, otherwise d 2,1 ＝1。d 2,2 The value of (2) is BWP switch time.
EXAMPLE 1g
The slot offset threshold may include the following parameters: a slot offset threshold for PDSCH, a slot offset threshold for PUSCH, a slot offset threshold for PDSCH to HARQ, a slot offset threshold for aperiodic CSI-RS, a threshold for PDSCH decoding time, a threshold for PUSCH preparation time, a threshold for CSI computation delay. The slot offset threshold for each parameter may be determined by the primary cell and the secondary cell. If the PDCCH is not authorized on the primary cell, a slot offset threshold for a parameter (slot offset threshold for PDSCH, slot offset threshold for PUSCH, slot offset threshold for PDSCH to HARQ, slot offset threshold for aperiodic CSI-RS, threshold for PDSCH decoding time, threshold for PUSCH preparation time, threshold for CSI calculation delay) is greater than 0. In another example, if the PDCCH is not authorized on the primary cell, the slot offset threshold for each parameter (slot offset threshold for PDSCH, slot offset threshold for PUSCH, slot offset threshold for PDSCH to HARQ, slot offset threshold for aperiodic CSI-RS, threshold for PDSCH decoding time, threshold for PUSCH preparation time, threshold for CSI computation delay) is equal to the maximum value in the slot offset list for each parameter.
Example 2
In the present embodiment for the gNB, the configuration signaling sent at 410 is a configuration of a 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 an "on duration" state and an "off duration" state), a wake-up signal is transmitted to the UE before the "on duration" state. The configuration of the wake-up signal comprises a time gap. A time gap between the wake-up signal and an "on-duration" state of the DRX is determined based on whether a predetermined condition is met 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 (change 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: a bandwidth part indicator in a wake-up signal, a bandwidth part indicator in a last DCI, a BWP switching delay, a subcarrier spacing, a current BWP index, a frequency domain bandwidth, a frequency domain location. 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 in the wake-up signal, the current BWP index and the BWP switch delay. If the bandwidth part indicator in the wake-up signal is different from the current BWP index (or a BWP switch request is sent to the UE through the wake-up signal), the time gap between the wake-up signal and the "on-duration" state of DRX is equal to the BWP switch delay. Otherwise, the time gap between the wake-up signal and the "on duration" state of DRX is equal to 0.
BWP switching 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 the BWP handover occurs no later than slot n+y, 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-up signal and the "on duration" state of DRX. A BWP handover request (BWP 0 with subcarrier spacing 0 changed to BWP0 with subcarrier spacing 1) is transmitted to the UE. According to table 1, the bwp switching delay is equal to 3ms. Thus, the time gap 610 between the wake-up signal and the "on duration" state of DRX in fig. 6 is equal to 3ms. Since BWP is successfully switched and DRX "on duration" is simultaneously activated, 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 set. 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 the following: 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 a power saving 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 power 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 the DRX is based on a determination of whether one or more parameters meet 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 gNB, the configuration signaling sent at 410 is an enter sleep signal. The configuration of the go to sleep signal includes one or more of the following parameters: the number of inactive DRX cycles, the number of inactive time slots, the number of inactive milliseconds, the DRX short cycle, the DRX long cycle, the index of the DRX parameter set.
For example, the transmission information associated with the sleep-entering signal may include a number of inactive DRX cycles. The gNB may send an enter sleep signal (including the number of inactive DRX cycles, e.g., x 0) to the UE, and then the gNB may not send data to the UE for future x0 DRX cycles including the current DRX cycle and the next (x 0-1) DRX cycles. Since the UE knows that no data is to be granted in 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 of DRX operation. At 710, 720, and 730, the gNB will not send data to the UE, and the UE may remain asleep in order to save power. At 740, the gNB may send data to the UE, and the UE may wake up to monitor the PDCCH.
In another example, the transmission information associated with the sleep-in signal includes a number of inactive time slots (measured in times such as time slots or milliseconds (ms)). The gNB may send a go to sleep signal to the UE (including the number of inactive time slots, such as x1=2 or 4, and the gNB may not send data to the UE in the future x1 time slots, since the UE knows that there is no data to grant in x1 time slots, the UE may go to sleep to reduce power consumption.
In another example, the transmission information associated with the go to sleep signal includes a value of a DRX short cycle. The gNB sends an enter sleep signal (including a value of the DRX short cycle, such as x2 ms) to the UE, while the gNB will send data to the UE according to the new DRX short cycle of x 2ms (such as x2=8ms). The UE may wake up to monitor the PDCCH according to a 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-in signal includes a value of a DRX long cycle. The gNB sends an enter sleep signal to the UE that includes a value of a DRX long period, such as x 3ms, and the gNB will send data to the UE according to a new DRX long period 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 go to 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. 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 include at least one of: a DRX HARQ RTT timer for DL, a DRX HARQ RTT timer for UL, a DRX inactivity timer, a DRX long period start offset, a DRX on duration timer, a DRX retransmission timer for DL, a DRX retransmission timer for UL, a DRX short period timer, a DRX short period, a DRX slot offset. An example of a DRX parameter set is shown in table 2. The "X" in table 2 indicates undefined. If the index of the DRX parameter set is equal to 3, the DRX short period is equal to 16ms, the DRX short period timer is equal to 10ms, the DRX on duration timer is equal to 2ms, the DRX inactivity timer is equal to 3ms, the DRX long period is equal to 40ms, and the DRX retransmission timer for 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 go-to-sleep 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 go to sleep signal includes a DRX parameter, a BWP index, and a secondary cell state. For example, when the DRX on duration timer of the DRX parameter in the go-to-sleep signal is 4ms, the BWP index is 0, and the secondary cell state is "off", the gNB transmits data to the UE according to the DRX operation with the DRX on duration timer of 4ms, the BWP index of 0, and the gNB may not transmit data or reference signals to the UE on the secondary cell.
In another example, the transmission information associated with the go to sleep 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 for the DRX parameter into the sleep signal is 3ms, the BWP index is 1, the slot offset threshold is 2, and the secondary cell state is "off", then the gNB transmits data to the UE according to the DRX operation with a DRX on duration timer of 4ms, BWP index of 0, the gNB will not transmit data or reference signals 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 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-in signal is 2 and the number of UE transmit antennas is 4, after the UE receives the sleep-in signal, the UE receives data from the gNB via 2 receive antennas and transmits the data to the gNB via 4 transmit antennas.
In another example, a scrambling method using a power saving RNTI transmits an enter sleep signal on the PDCCH. In another example, the enter sleep signal is defined by DCI.
In the UE, as shown in fig. 4B, the configuration signaling received at 430 is a configuration of the go to sleep signal. The configuration of the go to sleep signal includes one or more of the following: the number of inactive DRX cycles, the number of inactive time slots, the number of inactive milliseconds, the DRX short cycle, the DRX long cycle, the index of the DRX parameter set. The go to sleep signal in example 3 may be used as the parameters for the UE received at 430 in fig. 4B.
Example 4
In this embodiment for a gNB, the configuration signaling sent at 410 includes at least one of a wake-up signal or an enter sleep signal. Whether the wake-up signal or the go-to-sleep signal is configured or sent to the UE is determined based on whether a condition is met for one or more of the parameters. The condition may vary depending on the parameters. 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, state of the UE, number of MIMO parameters, UE assistance information, 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 sleep-enter signal to the UE. For example, if the DRX short cycle of the 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 parameter includes a DRX long period. If the DRX long period 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 parameters include slot offset. Based on the determination of the condition, the gNB may send a wake-up signal or an enter sleep signal to the UE. For example, if the slot offset of the time domain parameter is greater than 2, transmitting a wake-up signal 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 an enter sleep signal. A determination is made whether the UE receives a wake-up signal or a sleep-in signal based on whether a condition is met for one or more parameters. The condition may vary depending on the parameters. The parameter is transmission information associated with the configuration signaling. For example, the parameters include one or more of the following: DRX parameters, time domain parameters, BWP parameters, state of the UE, number of MIMO parameters, UE assistance information, 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 an incoming sleep signal. In another example, the DRX parameter includes a DRX long period. If the DRX long period is configured, the UE detects and receives an entering sleep signal; otherwise, the UE detects and receives a wake-up signal. A wake-up signal or an enter 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 an activated/deactivated configuration of carrier aggregation/dual connectivity (CA/DC). The configuration of activation/deactivation of carrier aggregation/dual connectivity (CA/DC) is determined by scheduling DCI. Scheduling DCI may include one or more of the following: DCI format 0_0, DCI format 0_1, DCI format 1_0, DCI format 1_1. Since HARQ (acknowledgement/negative acknowledgement, ACK/NACK) is reported to the gNB for PDSCH scheduled by scheduling DCI, the UE and the gNB have the same understanding of the state of CA/DC. Therefore, unnecessary power consumption due to misunderstanding 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 an activation/deactivation configuration of the CA/DC. The configuration of the activation/deactivation configuration of the CA/DC may be determined by scheduling DCI. Scheduling DCI may include one or more of the following: DCI format 0_0, DCI format 0_1, DCI format 1_0, DCI format 1_1. Since HARQ (ACK/NACK) must be reported to the gNB for PDSCH scheduled by scheduling DCI, the UE and the gNB have the same understanding of the CA/DC status. Therefore, unnecessary power consumption due to misunderstanding 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. Whether the reference signal is configured or transmitted to the UE is determined based on whether the one or more parameters satisfy the condition. The condition may vary depending on the parameters. The parameter is transmission information associated with the configuration signaling. For example, the parameters include one or more of the following: a current BWP index and a 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 reference signal is not configured. Since there is overlap between the bandwidth of the current BWP index and the bandwidth of the new BWP index, it is not necessary to measure large-scale channel information for the UE, and power saving can be obtained. 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 the reference signal is configured, the reference signal is a power saving signal, such as a wake-up signal or a sleep-in signal.
In an embodiment of the UE, as shown in fig. 4B, the configuration signaling received at 430 includes a reference signal. Whether the UE receives the reference signal is determined based on whether the one or more parameters satisfy the condition. The condition may vary depending on the parameters. The parameter is transmission information associated with the configuration signaling. For example, the parameters include at least one of: a current BWP index and a 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 the reference signal is configured, the reference signal is a power saving signal, such as a wake-up signal or a sleep-in signal.
Example 7
In an embodiment of the gNB, the configuration signaling sent at 410 includes search space parameters and DRX parameters. The transmission information associated with the search space parameter includes a PDCCH monitoring slot period. And, the transmission information associated with the DRX parameters includes an on duration timer and an inactivity timer. The PDCCH monitoring slot period may be determined by a DRX on duration state and a DRX inactive state. The PDCCH monitoring slot period of the DRX inactive state is y0 times the PDCCH monitoring slot period of the DRX on duration state. The PDCCH monitoring slot period of the DRX on duration state is equal to the configured PDCCH monitoring slot period. The value of y0 may be an integer greater than 1, for example y0 equals 2, 3, 4, 6, 8, 12, 16 or 32. For example, if the PDCCH monitoring slot period is configured to 4 slots, when y0 is equal to 2, the PDCCH monitoring slot period of the DRX on duration state is 4 slots, and the PDCCH monitoring slot period of the DRX inactive state is 8 slots. Fig. 8 shows an example in which PDCCH monitoring slot period 810 of DRX on duration state 840 is 4 slots and PDCCH monitoring slot period 830 of DRX inactive state 850 is 8 slots. At 820 in fig. 8, PDSCH is scheduled (or the gNB sends data to the UE). Then, the DRX inactivity timer 850 is activated, wherein the UE may monitor the PDCCH according to a PDCCH monitoring slot cycle having 8 slots.
In another example, the PDCCH monitoring slot period for the DRX on duration state is y1 times the PDCCH monitoring slot period for the DRX inactive state. The PDCCH monitoring slot period of the DRX inactive state may be equal to the configured PDCCH monitoring slot period. The value of y1 may be an integer greater than 1, for example y1 is equal to 2, 3, 4, 6, 8, 12, 16 or 32. For example, if the PDCCH monitoring slot period is configured to be equal to 8 slots, when y1 is equal to 2, the PDCCH monitoring slot period of the DRX inactive state may be 8 slots, and the PDCCH monitoring slot period 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 parameter includes a DRX cycle. If the DRX short period is configured, the DRX period is equal to the DRX short period. Otherwise, the DRX cycle is equal to the DRX long cycle. The minimum value of the PDCCH monitoring slot period and the DRX period for the primary cell may be m0, and the minimum value of the PDCCH monitoring slot period and the DRX period for the secondary cell may be m1, and m1 may be greater than m0. For example, m1 may be y2 times m0. The value of y2 may be an integer greater than 1, for example 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 period of the DRX inactive state may be y0 times the PDCCH monitoring slot period of the DRX on duration state. The PDCCH monitoring slot period of the DRX on duration state may be equal to the configured PDCCH monitoring slot period. The value of y0 may be an integer greater than 1, for example y0 equals 2, 3, 4, 6, 8, 12, 16 or 32. For example, if the PDCCH monitoring slot period is configured to 4 slots, when y0 is equal to 2, the PDCCH monitoring slot period of the DRX on duration state is 4 slots, and the PDCCH monitoring slot period of the DRX inactive state is 8 slots. In another example, the PDCCH monitoring slot period for the DRX on duration state is y1 times the PDCCH monitoring slot period for the DRX inactive state. The PDCCH monitoring slot period of the DRX inactive state may be equal to the configured PDCCH monitoring slot period. The value of y1 may be an integer greater than 1, for example y1 is equal to 2, 3, 4, 6, 8, 12, 16 or 32. For example, if the PDCCH monitoring slot period is configured to be equal to 8 slots, when y1 is equal to 2, the PDCCH monitoring slot period of the DRX inactive state is 8 slots, and the PDCCH monitoring slot period 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-into-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 an enter-into-sleep signal. The respective signals include at least one of a wake-up signal and a sleep-in signal. In general, the UE monitors the PDCCH according to a predetermined period to determine whether the gNB schedules its own measurement reports of data transmission, reception, and information. However, merely monitoring the PDCCH (unauthorized or scheduled) consumes more power at the UE. The UE monitors the PDCCH according to the period. If no scheduling information is detected, the UE may enter an inactive mode (or off duration state) in the 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 saving 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 based on DCI, abbreviated WUD (wake-up DCI). The sequence is defined by one of: tracking reference signal, CSI-RS type reference signal, auxiliary synchronization signal, primary synchronization signal and demodulation reference signal. If a signal is detected (or a "1" is indicated), the PDCCH is monitored at a potential PDCCH monitoring point. If no signal is detected (or a "0" is indicated), the UE monitoring 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. The wake-up signal based on Downlink Control Information (DCI) may be referred to as WUD. Since DCI is transmitted on PDCCH, it may also be called WUP. Unless otherwise specified, WUS may be WUD or WUP.
The wake-up mechanism described above may have other embodiments as well. For example, the base station may transmit a "go to sleep" signal (GTS). If the GTS signal is detected, the UE does not monitor the PDCCH at a potential PDCCH monitoring point. Otherwise, the UE performs PDCCH monitoring. This may also be a scheduling indication. If the UE detects that the indication of the GTS is "0", PDCCH monitoring is performed at a 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 foregoing wake-up mechanism may also have other embodiments. For example, the base station may transmit a wake-up signal (WUP) on the PDCCH or transmit a wake-up signal (WUD) based on the DCI. If a WUP (or WUD) signal is detected, the UE monitors the PDCCH at a potential PDCCH monitoring point. Otherwise, the UE monitoring result is DTX, and does not monitor PDCCH. This may be a scheduling indication. If the UE detects that the indication is "1" through 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, parameters of search space, parameters of DRX, parameters of control resource set (CORESET), parameters of BWP, and parameters of MIMO. The DCI or WUP is scrambled with a new type of RNTI (or energy saving RNTI). The energy saving RNTI is defined in NR Release 16 or later.
The duration without potential PDCCH monitoring is an integer greater than or equal to 0 and is specified in slots or milliseconds. It is defined as the duration of a PDCCH monitoring window in which 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: frequency domain resources, duration, interleaver size, control resource set identifier.
The parameters of BWP include at least one of the following parameters: BWP index.
The parameters of MIMO include at least one of the following: the number of UE receive antennas, the number of UE transmit antennas, the number of UE panels, the number of UE receive layers, the number of UE transmit layers.
Using the wake-up mechanism described above, the UE may skip PDCCH monitoring without requiring PDCCH monitoring. The frequency range (or bandwidth) of WUS may be selected to be narrower than that of PDCCH in order to save power. Compact DCI may be selected for a low power WUD (WUP). The monitoring method is based on low complexity sequences or compact DCI. Thus, one advantage of such an embodiment is that the receiver power consumption is lower than the power consumption of PDCCH monitoring. In this way, a 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 a reference signal, and report a channel quality state (CSI) to the gNB according to a WUS/WUP/WUD trigger state (or WUS trigger state, WUP trigger state, WUD trigger state). 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 saving signal, a PDCCH-based power saving signal, a sequence-based power saving signal. As shown in fig. 10, for a UE, a wake-up signal (indicated as "1") is detected at 1020. According to the corresponding WUS trigger state, the UE will measure reference signals (e.g., CSI-RS or tracking RS) at 1030 and report the measurement results to the gNB at 1040. In general, the time and frequency resources that may be used by the UE to report CSI are controlled by the gNB. The measurement results (CSI) of the WUS trigger state may include a Channel Quality Indicator (CQI), a Precoding Matrix Indicator (PMI), a CSI-RS resource indicator (CRI), an 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, L-RSRP, the UE is configured by the higher layer with N.gtoreq.1 report settings, M.gtoreq.1 resource settings, and a trigger status list (given by the higher layer parameters CSI-AperiodicTriggerStateList). Each trigger state in the CSI-apeeriodicttriggerstatelist contains a list of associated CSI-ReportConfigs indicating the resource set ID of the channel. 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 measurements and aperiodic reporting of CSI-RS (reference signal) on L1 according to all entries in associtreportconfigmnfolist for the trigger state. Each associtreportconfigmnfo in associtreportlist includes at least one of: reportConfigId, resourceSet, qcl-info, CSI-SSB-ResourceSet, CSI-IM-ResourcesForInterference, nzp-CSI-RS-resource eForterface. The reportConfigId indicates one of CSI-reportconfigs configured in CSI-MeasConfig. ResourceNet is defined as NZP-CSI-RS-ResourceNet for channel measurement. And, the resourcesforschannelmeasement in CSI-ReportConfig indicated by reportConfigId indicates the entry number in nzp-CSI-RS-resourcesetsist 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: servCellIndex, BWP-Id, NZP-CSI-RS-ResourceId, SSB-Index, qcl-type. csi-SSB-resource set is defined for channel measurement. The resourcesforschannelmessaurement in CSI-ReportConfig indicated by reportConfigId indicates the entry number in CSI-resourcesetsist in CSI-ResourceConfig. csi-IM-ResourceForInterface is defined for interference measurement. The CSI-IM-resourcesforinterface in CSI-ReportConfig indicated by reportConfigId indicates the entry number in CSI-IM-resourcesist in CSI-ResourceConfig. nzp-CSI-RS-resource eForInterface is defined for interference measurement. nzp-CSI-RS-resourcesforinterface in CSI-ReportConfig indicated by reportConfigId indicates the entry number in nzp-CSI-RS-resourcesetsist in CSI-ResourcesConfig.
For high frequency or low frequency operation, the UE needs to know the trigger state for proper reception of WUS. In the disclosed subject matter, the trigger state of WUS includes at least one of: transmitting configuration indicator information and reporting configuration identifiers. The transmission configuration indicator information may include at least one of the following parameter sets: doppler shift, doppler spread, average 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 reporting the configuration identifier.
The reporting offset of WUS trigger state is defined as the offset between the reference slot and the slot where the measurement (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 reporting offset for WUS trigger status, the UE applies a value of 1 when PUSCH SCS is 15/30 KHz; the value of 2 is applied when PUSCH SCS is 60KHz and the value of 3 is applied when PUSCH SCS is 120 KHz. The aperiodic trigger offset may be defined as an offset between a reference slot and a slot in which the CSI-RS resource set 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 trigger offset value may be specified in terms of slots or subframes or milliseconds. The reference time slot is determined by a WUS parameter (e.g., WUS period). In one specific example, the reference time slot is a time slot in which the WUS signal is transmitted. When the trigger state is set to 0, CSI is not requested. The reporting offset is a value of the reporting slot offset list, and the reporting slot offset list (reportSlotOffsetList) is defined in the information element of CSI-ReportConfig. The values in the list of reported slot offsets include one or more of the following: 40. 48, 64, 96, 128, 256, 320, 512, 600, 800, 1024 and 2048. The aperiodic trigger offset is a value in an aperiodic trigger offset set (aperiodic trigger offset), and the aperiodic trigger offset set is defined in an information element of NZP-CSI-RS-resource set. The values in the aperiodic trigger offset set include one or more of the following: 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 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 the PDCCH. The DCI received on the PDCCH may include a trigger state of WUS. For example, the DCI field "CSI request" is associated with WUS trigger status. Upon receiving a value associated with the trigger state ("CSI request"), the UE will perform measurement and aperiodic reporting of CSI-RS (reference signal) on the L1 signaling according to the trigger state. As shown in fig. 11, at 1110 of slot 0, the trigger state of WUS is configured by DCI (e.g., a "CSI request" field in DCI). And, the UE detects the WUS signal at 1120 of slot 8. If the WUS signal indicates a "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 at the slot where the WUS signal is transmitted (at slot 8), the reporting offset value is equal to 3 slots, rather than the periodic trigger offset value being equal to 6 slots. After slot 14, the DRX on duration state begins. Beginning in slot 15, the gNB may schedule transmissions and the UE needs to monitor the PDCCH.
Method B
The UE may determine the trigger state of WUS by one of the following methods: the UE may determine its trigger state for WUS through RRC configuration parameters. The RRC configuration parameter may include at least information of the trigger state of WUS. For example, the RRC parameter "CSI request" may be associated with the trigger state of WUS. Upon receiving the value associated with the WUS trigger state, the UE will perform measurement and aperiodic reporting of CSI-RS (reference signal) on the L1 signaling according to the trigger state. As shown in fig. 12, at 1210, the trigger state of WUS is configured by RRC information. Also, the UE detects the WUS signal at 1220 of the slot 20, and if the WUS signal indicates "1" (or CSI reporting or PDCCH monitoring or data grant scheduling is enabled), the UE measures a Reference Signal (RS) at 1230 of the slot 21 and reports the measurement result to the gNB at 1240 of the slot 22. The UE monitors PDCCH at 1250 of slots 23 to 25. The reference slot is located on the slot (at slot 20) where the WUS signal is transmitted and the reporting offset value is equal to 1 slot instead of the periodic trigger offset value being equal to 2. After slot 22, the DRX on duration state begins. Beginning in slot 23, the gNB may schedule transmissions and the UE needs to monitor the PDCCH.
Method C
The UE may determine its trigger status for WUS through configuration parameters of a medium access control-control element (MAC-CE). The MAC-CE configuration parameters may include at least information of the trigger state of WUS. For example, the information of "CSI request" may be associated with a trigger state. Upon receiving the value associated with the trigger state, the UE will perform measurement and aperiodic reporting of CSI-RS (reference signal) 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 a 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 a SSB configuration.
In some example embodiments of the disclosed methods, 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 associtedssb) that includes one or more of the following: SSB index or quasi co-located (quasi co-located) symbol. With the configuration of the associated SSBs, the UE may base the timing of the CSI-RS resources 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 the associated SS/PBCH block is configured but not detected by the UE, the UE may not monitor the corresponding CSI-RS resource. The quasi co-located symbol (e.g., isquasilocalized) indicates whether the associated SS/PBCH block and CSI-RS resource given by associpedssb are quasi co-located with respect to [ 'QCL-TypeD' ].
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 includes at least one of the following parameters: nzp-CSI-ResourceSetId, nzp-CSI-RS-Resoruces, NZP-CSI-RS-ResourceId, aperiodicTriggeringOffset.
nzp-CSI-RS-Resources include the following parameters: nzp-CSI-RSResourceId, resourceMapping, powerControlOffset, powerControlOffsetSS, scramblingID, periodicityAndOffset and qcl-InfoPeriodacCSI-RS.
Example 10
In an embodiment 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 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-wakeup window configuration or a preparation period, which includes the process of measuring a channel and reporting a channel state. In addition, it may also include channel tracking and beam tracking (for time/frequency synchronization). The measured window configuration includes at least the following parameters: 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 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 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 is equal to 1 slot (e.g., WUS on slot 20 and DRX "on duration" state begins on slot 21). The reference slot is the slot where the DRX on duration begins, e.g., at 1320. At 1340, because the WUS signal indicates "0", the UE stays in the sleep state and the gNB does not perform data transmission, although the DRX "on duration" state is activated.
Similarly, fig. 14 shows another example, in which the PDCCH monitoring period is configured to have 16 slots, and the duration (the number of consecutive slots in which the search space lasts at each time) for PDCCH monitoring 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 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 WUS offset is equal to 1 slot (e.g., WUS on slot 20 and PDCCH monitoring begins on slot 21). The reference slot is the slot where PDCCH monitoring begins, e.g., at 1420. At 1440, since the WUS signal indicates "0", the UE stays in a 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 the preparation period. In another embodiment of the UE, as shown in fig. 4B, the configuration signaling received at 430 includes a configuration of the 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-wake window configuration or a measurement window configuration.
The TRS configuration is defined such that 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 time slots of a measured window during which the UE may acquire and report Channel State Information (CSI). The SSB configuration includes an SSB index or an associated SSB (referred to as associatedSSB, including one or more of the SSB index or quasi co-located symbols). The NZP CSI-RS resource set may include at least one of the following parameters: nzp-CSI-ResourceSetId, nzp-CSI-RS-Resources, repetition, aperiodicTriggeringOffset, trs-Info.
For example, the respective signals include at least one of WUS, WUP, or WUD. When 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 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 the 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-apiodics triggerstatelist).
One or more aperiodic trigger states are defined in the list of aperiodic trigger states. The aperiodic trigger state includes one or more of the following: the slot offset of the resource set is reported. 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 in which the DRX on duration starts, or the reference slot is a slot in which PDCCH monitoring starts, or the reference slot is a slot containing the 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 value. A specific value of the reporting slot offset may be indicated in the DCI. The network indicates in the DCI field of the UL grant which of the configured reporting slot offsets the UE will apply. In a list of aperiodic trigger states (CSI-aperiodic triggerstatelist), a CSI RS resource set (or SSB resource) configuration and a CSI report configuration are defined.
For example, when 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 the preparation period. And, the UE continues to monitor PDCCH and receive/transmit data from/to the gNB. When 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, as shown in fig. 4A, the configuration signaling sent at 410 includes WUS trigger state. In another embodiment of the UE, as shown in fig. 4B, the configuration signaling received at 430 includes WUS trigger status. 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 reporting configuration identifiers. The WUS trigger state is enabled by at least one of: RRC signaling, MAC-CE signaling, or DCI signaling. The transmission configuration indicator information may comprise at least one of the following parameter sets at least with respect to spatial reception information: doppler shift, doppler spread, average delay, delay spread; doppler shift, doppler spread; doppler shift, average delay. The CSI RS resource set (or SSB resource) configuration and CSI reporting configuration are determined by a reporting configuration identifier. By transmitting the configuration indicator information and the CSI RS resource set, the UE may accurately measure the channel.
For example, when WUS (or WUP) indicates "1", the UE wakes up to detect/measure channels (channel tracking, beam tracking, time/frequency synchronization, and CSI acquisition) and reports CSI based on transmission information associated with WUS trigger state. And, the UE continues to monitor PDCCH and receive/transmit data from/to the gNB. When WUS (or WUP) indicates "0", the UE stays in a sleep state to reduce power consumption. For example, the UE receives signaling (RRC signaling) from the RRC, and configures the UE in a WUS trigger state in the RRC signaling. For example, the UE receives signaling from MAC-CE (MAC-CE signaling) and configures the UE in WUS trigger state in MAC-CE signaling. For example, the UE receives signaling (DCI signaling) from DCI and configures the UE in 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 includes at least one of the following parameters: WUS triggers the state. The WUS trigger state includes at least one of the following parameters: transmission 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 transmission configuration indicator information may comprise at least one of the following parameter sets at least with respect to spatial reception information: doppler shift, doppler spread, average delay, delay spread; doppler shift, doppler spread; doppler shift, average delay. The CSI RS resource set (or SSB resource) configuration and CSI reporting configuration are determined by a reporting configuration identifier. By transmitting the configuration indication information and the CSI RS resource set, the UE may accurately measure the channel.
For example, when WUS (or WUP) indicates "1", the UE wakes up to detect/measure channels (channel tracking, beam tracking, time/frequency synchronization, and CSI acquisition) and reports CSI based on transmission information associated with WUS trigger state. And, the UE continues to monitor PDCCH and receive/transmit data from/to the gNB. When WUS (or WUP) indicates "0", the UE stays in a sleep state to reduce power consumption. For example, the UE receives signaling (RRC signaling) from the RRC, and configures the UE in a WUS trigger state in the RRC signaling. For example, the UE receives signaling from MAC-CE (MAC-CE signaling) and configures the UE in WUS trigger state in MAC-CE signaling. For example, the UE receives signaling (DCI signaling) from DCI and configures the UE in WUS trigger state in the DCI signaling.
Example 15
In an embodiment of the gNB, as in fig. 4A, the configuration signaling sent at 410 includes a configuration of PDCCH-based power save signals, a configuration of sequence-based power save signals, 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 power save signal, a configuration of a sequence-based power save signal, and a configuration of a preparation period. Which configuration signaling is transmitted to (or received by) the UE is determined based on whether the 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 power save signal (and the corresponding signal is a PDCCH-based power save signal) or a configuration of a sequence-based power save signal (and the corresponding signal is a sequence-based power save signal); if the frequency band is FR2, the configuration signaling is the configuration of the preparation period. For WUP (PDCCH-based power saving signal or wake-up PDCCH) signals, compact DCI on PDCCH is used to indicate whether the UE is to wake-up or go to sleep for power saving. The preparation period is defined as 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, 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 WUS (or WUP) indicates "1", the UE wakes up to detect/measure a channel and report CSI. And, the UE continues to monitor PDCCH and receive/transmit data from/to the gNB. When 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-wake 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 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 as a configuration of a PDCCH-based power save signal (and the corresponding signal may be a PDCCH-based power save signal) or a configuration of a sequence-based power save signal (and the corresponding signal may be a sequence-based power save signal); otherwise, the configuration signaling is the configuration of the preparation period.
For another example, when the RNTI type is an MCS-C-RNTI or a new type RNTI (power saving RNTI), the UE is configured as a PDCCH-based power saving signal configuration (the corresponding signal may be a PDCCH-based power saving signal) or a sequence-based power saving signal configuration (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 DRX cycle of the DRX parameter is greater than a threshold, then configuring the UE as a configuration of a PDCCH-based power save signal (the corresponding signal may be a PDCCH-based power save signal) or as a configuration of a sequence-based power save signal (the corresponding signal may be a sequence-based power save 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, configuration of SSS, configuration of PSS, configuration of TRS, configuration of DMRS, configuration of SRS. And, the corresponding 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 authorized for the UE, the UE detects only periodic signals and the UE may 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, configuration of SSS, configuration of PSS, configuration of TRS, configuration of DMRS, configuration of SRS. And, the corresponding 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 examples, the DRX cycle is 64 milliseconds, and the period of the corresponding signal is 64 milliseconds (equal to the DRX cycle), 128 milliseconds (equal to the DRX cycle times 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).
As another example, as shown in fig. 15, the DRX cycle is 40 ms, and the cycle of the corresponding signal is equal to 40 ms. At 1510, configuration signaling including an SSS index (or configuration of PSS, or configuration of SSS) is sent, and corresponding signals of PSS or SSS are sent at 1520, 1540, and 1560. The UE should monitor the PDCCH at 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 index or quasi co-located symbol. If quasi-co-located symbols are present, the UE may base the timing of the CSI-RS resources indicated in CSI-RS-Resource-Mobility on the timing of the cell indicated by the cellId in CSI-RS-Cellmobility. 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-sited symbols, the UE will base the timing of the CSI-RS resources indicated in CSI-RS-Resource-Mobility on the timing of the serving cell indicated by refServerCellIndex. In this case, the UE is required to measure CSI-RS resources even if SS/PBCH blocks with cellId in CSI-RS-Resource-Mobility are not detected.
The Synchronization Signal Block (SSB) is transmitted on a set of time/frequency resources (resource elements) within the 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 the 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 on each side of SSS. Thus, the total number of resource elements for PBCH transmission per SS block is equal to 576. Note that this includes resource elements for the PBCH itself, and also includes resource elements for demodulation reference signals (DMRS) required for coherent demodulation of the PBCH.
For the configuration of 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 spread. There are three different PSS sequences { x ] 0 }、{x 1 Sum { x } 2 -as per a recursive formula }The generated M-sequence { x } = x (0), x (1),.. And is derived.
By applying different cyclic shifts to the basic M-sequence x (n), three different PSS sequences { x) may be generated according to the following equation 0 }、{x 1 Sum { x } 2 }：
x 0 (n)＝x(n)；
x 1 (n)＝x(n+43mod 127)；
x 2 (n)＝x(n+86mod 127)
For the configuration of 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 oscillator imperfections, the UE must track and compensate for time and frequency variations 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 CSI-RS. In contrast, TRS is a set of resources consisting of multi-cycle NZP-CSI-RS. More specifically, the TRS consists of four single-port CSI-RS with a density of 3 located in two consecutive slots. CRS-RSs within a resource set, and thus TRSs in itself, may be configured with a period of 10, 20, 40, or 80 ms. Note that the exact set of resource elements (subcarriers and OFDM symbols) for the TRS CSI-RS may vary. There is always a four-symbol time domain separation between two CSI-RSs within one slot. This time domain separation sets the limit of the frequency error that can be tracked. Likewise, frequency domain separation (four subcarriers) sets the limit of timing errors that can be tracked.
For demodulation reference signals (DMRS), two main time domain structures are supported, and differencing is performed at the location of the first DM-RS symbol. Mapping type a, in which the first DM-RS is located in symbol 2 or 3 of the slot, and the DM-RS is mapped with respect to the beginning of the slot boundary, regardless of where in the slot the actual data transmission begins. This type of mapping is mainly used in case of data occupying (most) 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. The mapping type B, in which the first DM-RS is located in the first symbol of the data allocation, i.e., the DM-RS position is not given with respect to the slot boundary, but with respect to the position where the data is located. This mapping is initially driven by the following transmissions: transmission in a small fraction of the time slot to support very low latency; and other transmissions that benefit from not waiting until the slot boundary begins but may be used regardless of the transmission duration.
For a Sounding Reference Signal (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" structure, which means that the SRS is transmitted on every nth subcarrier, where N can take on a value of 2 or 4 (respectively "comb-2" and "comb-4"). SRS transmissions from different UEs may be frequency multiplexed within the same frequency range by being allocated different combs corresponding to different frequency offsets. For comb-2, i.e., when SRS is transmitted on every other subcarrier, two SRS may be frequency multiplexed. In the case of comb-4, up to four SRSs can be frequency multiplexed.
Example 17
In an embodiment of the gNB, as in fig. 4A, the configuration signaling sent at 410 includes configuration signaling defining a preparation period, and wherein the configuration signaling includes one or more of: TRS configuration, L1-RSRP calculation configuration, mobility management configuration, CSI acquisition configuration. For TRS configuration, the configuration parameters of the NZP-CSI-RS-resource set include: NZP-CSI resource set identifier, NZP-CSI-RS resource, NZP-CSI-RS resource identifier, aperiodic trigger offset, TRS information parameter. For L1-RSRP computational configuration, the configuration parameters of the NZP-CSI-RS-resource set include: nzp-CSI-ResourceSetId, nzp-CSI-RS-resources, NZP-CSI-RS-ResourceId, aperiodicTriggeringOffset, repetition parameters. For mobility management configuration, the configuration parameters of the NZP-CSI-RS-resource set 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 the following: nzp-CSI-ResourceSetId, NZP-CSI-RS-Resourceid, and aperiodic triggeringOffset. NZP-CSI-ResourceSetid is used for identifying a NZP-CSI-RS-ResourceSet; NZP-CSI-RS-Resource eID is used for identifying a 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 does not exist, 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 NrofPort 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 a value of "false". The preparation period is only for the case where there is data granted for the UE or the scheduled PDSCH. If there is no data or scheduled PDSCH authorized for the UE, the UE need not detect the preparation period and the UE may reduce most of the power consumption.
And, the configuration signaling at 420 comprises configuration signaling defining a preparation period, and wherein the configuration signaling comprises 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 time slot in which the CSI-RS resource set is transmitted and a reference time slot, wherein the reference time slot is one of: the time slot at which the DRX on duration starts, the time slot at which PDCCH monitoring starts, the time slot at which CSI reports are transmitted, the time slot at which corresponding signals are transmitted. For example, the reference slot is a slot (at slot 15) where the DRX on duration starts when the DRX operation is configured, and the slot where the CSI-RS resource set is transmitted is located at slot 10, the CSI resource offset is equal to 5 slots. For another example, when the 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, the reference slot is the slot in which the CSI-RS report is transmitted (at slot 5), and the slot in which the CSI-RS resource set is transmitted is located at slot 10, the CSI resource offset is equal to 5 slots. For another example, the reference slot is a slot (at slot 5) where the corresponding signal is transmitted, and the slot where the CSI-RS resource set is transmitted is located at slot 8, 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 to transmit DCI or PDCCH.
And, the configuration signaling comprises configuration signaling for defining a preparation period, and wherein the configuration signaling comprises reporting a 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: the time slot at which the DRX on duration starts, the time slot at which PDCCH monitoring starts, the time slot at which the CSI-RS resource set is transmitted, the time slot at which the corresponding signal is transmitted. For example, the reference slot is a 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, the reporting slot offset is equal to 5 slots. For another example, when the 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 containing CSI report is located at slot 10, the reporting slot offset is equal to 8 slots. For another example, the reference slot is the slot where the CSI-RS resource set is transmitted (at slot 5), and the slot containing the CSI report is located at slot 10, the reporting slot offset is equal to 5 slots. For another example, the reference slot is the slot where the corresponding signal is transmitted (at slot 5), and the slot containing the CSI report is located at slot 8, the reporting 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 to transmit DCI or PDCCH.
For example, the reporting slot offset is one value of the reporting slot offset list, and the reporting slot offset list (reportSlotOffsetList) is defined in the information element of CSI-ReportConfig. The values in the list of reported slot offsets include one or more of the following: 40. 48, 64, 96, 128, 256, 320, 512, 600, 800, 1024 and 2048. The aperiodic trigger offset is one value in an aperiodic trigger offset (aperiodic trigger offset) set, and the aperiodic trigger offset set is defined in an information element of NZP-CSI-RS-resource set. The values in the aperiodic trigger offset set include one or more of the following: 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), a slot offset between a slot transmitting the corresponding signal and a reference slot is equal to 1 or 0, wherein the reference slot is one of: in case that the DRX operation is configured, a slot in which the DRX on duration starts; in the case where the 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 to transmit DCI or PDCCH.
For another example, the configuration signaling for 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 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 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 of the configuration of N preparation periods is defined by the MAC-CE signaling, and a configuration of a preparation period 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 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 power saving signal.
And, the corresponding signal is a PDCCH-based power saving signal, which may be used to wake up the UE and trigger 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 save signal, wherein the power save signal may be used to wake up the UE and trigger the preparation period. The sequence may be one of the following: tracking reference signal, secondary synchronization signal, primary synchronization signal, tracking reference signal, demodulation reference signal, and sounding reference signal.
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 at 1640, a DRX on duration state is activated (or started) if DRX operation is configured or the UE starts monitoring with a PDCCH period configured by a search space. For example, the configuration signaling at 1610 is sent through RRC signaling and indicates the configuration of the preparation period. For another example, the configuration signaling at 1610 is sent 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, configuration signaling at 1610 is sent through MAC-CE signaling and indicates the configuration of M preparation periods, and PDCCH-based power saving signals at 1620 indicate the configuration of the preparation periods. As another example, configuration signaling at 1610 is sent through MAC-CE signaling and indicates the configuration of the preparation period. N is equal to 16 or 32, M is equal to 8 or 16. As another example, the configuration signaling at 1610 is sent through DCI signaling and 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 that defines the preparation period, and wherein the trigger state indicates one or more of: reporting configuration identifier, QCL information. The report configuration identifier indicates a CSI resource configuration identifier indicating at least one of: TRS configuration, L1-RSRP calculation configuration, mobility management configuration, CSI acquisition configuration. The TRS configuration includes one or more of the following: 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 the following: nzp-CSI-ResourceSetId, NZP-CSI-RS-resources, NZP-CSI-RS-ResourceId, aperiodicTriggeringOffset, repetition parameters; the mobility management configuration includes one or more of the following: NZP-CSI resource set identifier, NZP-CSI-RS resource, NZP-CSI-RS resource identifier, aperiodic trigger offset, or configured CSI-RS resource mobility; the CSI-RS acquisition configuration includes one or more of the following: nzp-CSI-ResourceSetId, nzp-CSI-RS-resources, nzp-CSI-RS-ResourceID or aperiodic triggeringOffset. Here, the repetition parameter indicates whether repetition is on/off. If the field is set to "OFF" or if the field does not exist, 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 NrofPort 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 a value of "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 time slot in which the CSI-RS resource set is transmitted and a reference time slot, wherein the reference time slot is one of: the time slot at which the DRX on duration starts, the time slot at which PDCCH monitoring starts, the time slot at which CSI reports are transmitted, the time slot at which corresponding signals are transmitted. For example, the reference slot is a slot (at slot 15) where the DRX on duration starts when the DRX operation is configured, and the slot where the CSI-RS resource set is transmitted is located at slot 10, the aperiodic trigger offset is equal to 5 slots. For another example, when the DRX operation is not configured, the reference slot is the slot (at slot 18) where PDCCH monitoring begins (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. For another example, the reference slot is the slot where the CSI-RS report is sent (at slot 5), and the slot where the CSI-RS resource set is sent is located at slot 10, then the aperiodic trigger offset is equal to 5 slots. For another example, the reference slot is the slot (at slot 5) where the corresponding signal is transmitted, and the slot where the CSI-RS resource set 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 to transmit 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 the CSI report and a reference slot, wherein the reference slot is one of: the time slot at which the DRX on duration starts, the time slot at which PDCCH monitoring starts, the time slot at which the CSI-RS resource set is transmitted, the time slot at which the corresponding signal is transmitted. For example, the reference slot is a 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, the reporting slot offset is equal to 5 slots. For another example, when the 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 containing CSI report is located at slot 10, the reporting slot offset is equal to 8 slots. For another example, the reference slot is the slot where the CSI-RS resource set is transmitted (at slot 5), and the slot containing the CSI report is located at slot 10, the reporting slot offset is equal to 5 slots. For another example, the reference slot is a slot (at slot 5) where the corresponding signal is transmitted, and the slot containing the CSI report is located at slot 8, the reporting 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 to transmit DCI or PDCCH. The trigger state of the preparation period is only for the case where there is data authorized for the UE or the scheduled PDSCH. If there is data granted to the UE or a scheduled PDSCH, 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 no detection preparation period is required, the UE can reduce most of the power consumption.
For example, when configuration signaling including a 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), a slot offset between a slot transmitting the corresponding signal and a reference slot is equal to 1 or 0, wherein the reference slot is one of: in case that the DRX operation is configured, a slot in which the DRX on duration starts; in the case where the 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 to transmit DCI or PDCCH.
For example, the reporting slot offset is one value of the reporting slot offset list, and the reporting slot offset list (reportSlotOffsetList) is defined in the information element of CSI-ReportConfig. The values in the list of reported slot offsets include one or more of the following: 40. 48, 64, 96, 128, 256, 320, 512, 600, 800, 1024 and 2048. The aperiodic trigger offset is one value in an aperiodic trigger offset (aperiodic trigger offset) set, and the aperiodic trigger offset set is defined in an information element of NZP-CSI-RS-resource set. The values in the aperiodic trigger offset set include one or more of the following: 8. 10, 12, 16, 20, 24, 32, 40, 48, 64, 96, 128, 256, 320, 512, 600, 800, 1024 and 2048.
For 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, where 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, where N trigger states are defined by the RRC signaling, M trigger states 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 the following: tracking reference signal, secondary synchronization signal, primary synchronization signal, tracking reference signal, demodulation reference signal, and sounding reference signal. The 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 at 1640, a DRX on duration state is activated (or started) if DRX operation is configured or the UE starts monitoring with a PDCCH period configured by a search space. For example, the configuration signaling at 1610 is sent through RRC signaling and indicates the trigger state of the preparation period. For another example, the configuration signaling at 1610 is sent 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, configuration signaling at 1610 is sent through MAC-CE signaling and indicates a trigger state for M preparation periods, and a PDCCH-based power saving signal at 1620 indicates a trigger state for a preparation period. As another example, configuration signaling at 1610 is sent through MAC-CE signaling and indicates the trigger state of the preparation period. N is equal to 16 or 32, 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 TRS configuration. For TRS (CSI-RS) configuration, a UE in RRC connected mode is expected to receive a higher layer UE-specific configuration of NZP-CSI-RS-resource set configured with higher layer parameters TRS-Info. For NZP-CSI-RS-resource set configured with higher layer parameters trs-Info, the UE should assume that the antenna ports with the same port index as the configured NZP CSI-RS-resource in NZP-CSI-RS-resource set are identical. For frequency range 1, the ue may be configured with one or more NZP-CSI-RS-resource eset, where the NZP-CSI-RS-resource eset includes four periodic NZP CSI-RS resources in two consecutive time slots, where there are 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-resource eset, where NZP-CSI-RS-resource eset includes two periodic CSI-RS resources in one slot, or with four periodic NZP-CSI-RS-resource in two consecutive slots, where each slot has two periodic NZP CSI-RS resources. The UE configured with NZP-CSI-RS-resource set may have CSI-RS resources configured with higher layer parameters trs-info: 1) Periodically, wherein the CSI-RS resources in the NZP-CSI-RS-resource set 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, where 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 are 'QCL-Type-a' and 'QCL-Type' with periodic CSI-RS resources. For frequency range 2, the UE does not expect a scheduling Offset between the last symbol of the PDCCH carrying the trigger DCI and the first symbol of the aperiodic CSI-RS resource to be less than the threshold sched-Offset reported by the UE. The UE will expect the periodic CSI-RS resource set and the aperiodic CSI-RS resource set to be configured with the same number of CSI-RS resources and the same number of CSI-RS resources in the slot. For a set of aperiodic CSI-RS resources if triggered, and if the associated set of periodic CSI-RS resources is configured with four periodic CSI-RS resources having two consecutive slots, with two periodic CSI-RS resources in each slot, the higher layer parameter apperiodic trigger offset 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 NZP-CSI-RS-resource set configured with 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 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 CSI-RS resources within NZP-CSI-RS-resource set are transmitted using the same downlink spatial domain transmission filter. If the UE is configured with a reportquality set to "cri-RSRP" or "no" CSI-ReportConfig, and if the CSI-ResourceConfig (high-layer parameter resource measurement) for channel measurement contains NZP-CSI-RS-ResourceSet, which is configured with high-layer parameter repetition without high-layer parameter trs-info, the UE can only be configured with the same number (1 or 2) of ports with high-layer parameter nrofPort for all CSI-RS resources within 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 the SS/PBCH block are quasi co-located with the 'QCL-TypeD' if the 'QCL-TypeD' is applicable. Furthermore, the UE should not expect to configure CSI-RS in PRBs overlapping with those of SS/PBCH blocks, 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 high-layer parameters CSI-RS-Resource-Mobility and no high-layer parameters associatedSSB are configured, the UE will perform measurements based on CSI-RS-Resource-Mobility and the UE may base the timing of CSI-RS resources 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 resources on the timing of the cell given by the cellId configured by the CSI-RS resources. In addition, for a given CSI-RS resource, if the associated SS/PBCH block is configured but not detected by the UE, the UE need not monitor the corresponding CSI-RS resource. The higher layer parameter isQuasiColocated indicates whether the associated SS/PBCH block and CSI-RS resources given by associateSSB are co-located with respect to the [ 'QCL-TypeD' ] standard. If the UE is configured with the higher 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 higher layer parameter CSI-RS-CellMobility and with the same refFreqCSI-RS is less than 153600Ts. If the UE is configured with DRX, the UE is not required to perform measurement of the CSI-RS resources except during an active time for the CSI-RS-Resource-Mobility based measurement. If the UE is configured with DRX and the DRX cycle in use is greater than 80ms, the UE may not expect CSI-RS resources to be available except during the 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, smart phone, cellular phone, or other mobile device.
Summary of the inventionsummary
The following clauses enumerate features of 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 signals comprise at least periodic signals 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 comprises at least a period of the respective signal, and wherein the period of the respective signal is equal to one of: discontinuous Reception (DRX) cycle, DRX cycle times 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.
7. The wireless communication method of clause 1, wherein the corresponding signal is a power saving signal based on a Physical Downlink Control Channel (PDCCH), wherein the power saving 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 saving signal, wherein the power saving signal is used to wake up the user equipment and trigger a preparation period.
9. The wireless communication method of clause 1, 7 or 8, wherein the configuration signaling comprises configuration signaling for 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 TRS configuration includes one or more of the following: a 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 the following: NZP-CSI-resource set identifier (ResourceSetId), NZP-CSI-RS-resources (resources), NZP-CSI-RS-resource identifier (ResourceId), aperiodic trigger offset (aperiodic trigger offset), or repetition parameter;
the mobility management configuration includes one or more of the following: 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 the following: nzp-CSI-ResourceSetId, nzp-CSI-RS-resources, NZP-CSI-RS-ResourceID, or aperiodic triggeringOffset.
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 time slot in which a CSI-RS resource set is transmitted and a reference time slot, wherein the reference time slot is one of:
A slot where the DRX on duration begins;
PDCCH monitors a starting slot;
a time slot for transmitting a CSI report;
and transmitting the time slot of the corresponding signal.
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:
a slot where the DRX on duration begins;
PDCCH monitors a starting slot;
a time slot for transmitting the CSI-RS resource set;
the time slots of the corresponding signals are transmitted.
13. The wireless communication method according to any one of clauses 7 to 12, wherein when no configuration signaling for defining a preparation period is configured, a slot offset between a slot transmitting the corresponding signal and a reference slot is equal to 1, wherein the reference slot is one of: a slot where the DRX on duration begins; the PDCCH monitors the starting slot.
14. The wireless communication method of any of clauses 7 to 12, wherein the configuration signaling for 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 for defining the preparation period is determined by one of:
a combination of RRC signaling and DCI signaling, wherein the configuration of the N preparation periods is defined by the RRC signaling and the configuration of the preparation periods 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 the configuration of N preparation periods is defined by the RRC signaling, the configuration of M preparation periods of the configuration of N preparation periods is defined by the MAC-CE signaling, and the configuration of preparation periods of the configuration of M preparation periods is determined by the DCI signaling;
a combination of RRC signaling and MAC-CE signaling, wherein the configuration of the N preparation periods is defined by the RRC signaling and the 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 saving signal.
17. The wireless communication method of clause 1, wherein the configuration signaling comprises a trigger state for defining a preparation period, and wherein the trigger state indicates one or more of: configuration identifier, quasi co-location (QCL) information is reported.
18. The wireless communication method 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 TRS configuration includes one or more of the following: 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 the following: nzp-CSI-ResourceSetId, nzp-CSI-RS-resources, NZP-CSI-RS-ResourceId, aperiodicTriggeringOffset, or repetition parameters;
the mobility management configuration includes one or more of the following: 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 the following: nzp-CSI-ResourceSetId, nzp-CSI-RS-resources, NZP-CSI-RS-ResourceID, or aperiodic triggeringOffset.
19. The wireless communication 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 time slot in which a CSI-RS resource set is transmitted and a reference time slot, wherein the reference time slot is one of:
A slot where the DRX on duration begins;
PDCCH monitors a starting slot;
a time slot for transmitting a CSI report;
the time slots of the corresponding signals are transmitted.
20. The wireless communication 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:
a slot where the DRX on duration begins;
PDCCH monitors a starting slot;
a time slot for transmitting the CSI-RS resource set;
the time slots of the corresponding signals are 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 trigger states of the N trigger states are defined by the MAC-CE signaling, and the trigger states of the M trigger states are 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 saving signal.
24. The wireless communication method of clause 17, wherein the QCL information includes one or more of the following: 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 comprises a slot offset threshold.
26. The wireless communication method of clause 25, wherein the slot offset threshold comprises one or more of:
a slot offset threshold for a Physical Downlink Shared Channel (PDSCH);
a slot offset threshold for a Physical Uplink Shared Channel (PUSCH);
a slot offset threshold of PDSCH to hybrid automatic repeat request (HARQ);
a slot offset threshold of an aperiodic channel state information reference signal (CSI-RS);
A threshold of PDSCH decoding time;
threshold of PUSCH preparation time;
channel State Information (CSI) calculates a threshold of delay.
27. The wireless communication method of clause 1, wherein the configuration signaling comprises:
configuration of a PDCCH-based power saving signal;
configuration of a sequence-based power saving signal; and
configuration of the preparation period.
28. The wireless communication method of clause 27, wherein the configuration signaling is determined by a predefined set of resources.
29. The wireless communication method of clause 28, wherein the predefined set of resources comprises 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 saving signal or a sequence-based power saving 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 to 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 a 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 for causing a processor to implement the method recited in any one or more of clauses 1 to 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 embodiments, modules, and functional operations disclosed herein and others may be implemented in digital electronic circuitry, or in computer software, firmware, or hardware, including the structures disclosed herein and structural equivalents thereof, 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 materials that implement a machine-readable propagated signal, or a combination of one or more of them. The term "data processing apparatus" includes all apparatuses, devices and machines for processing data, including for example a programmable processor, a computer, or multiple processors or computers. In addition to hardware, the apparatus may include 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. The 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 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. Typically, 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, the 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 disk; CD ROM and DVD-ROM discs. The processor and the memory can be supplemented by, or incorporated in, special purpose logic circuitry.
Although 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, although 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. Furthermore, 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 some embodiments and examples are described and other embodiments, enhancements, and variations may be made based on what is described and shown in this patent document.
Claims (31)
1. A method of wireless communication, comprising:
transmitting configuration signaling from the first wireless terminal to the second wireless terminal; the method comprises the steps of,
transmitting a respective signal to the second wireless terminal, wherein the respective signal is based on the configuration signaling;
the configuration signaling at least comprises the configuration of a DCI-based energy-saving WUD signal;
the WUD signal scrambles it by: a power saving wireless network temporary identifier;
the configuration includes: the time gap between the WUD signal and the "on duration" state of DRX.
2. The wireless communication method of claim 1, wherein the respective signals comprise at least periodic signals 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 further comprises an SSB index.
4. The wireless communication method of claim 2, wherein the configuration signaling further 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 further comprises at least a period of the respective signal, and wherein the period of the respective signal is equal to one of: discontinuous reception, DRX cycle times 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.
7. The wireless communication method of claim 1, wherein the respective signal is a PDCCH-based power save signal for waking up a user equipment and triggering a preparation period.
8. The wireless communication method of claim 1, wherein the respective signal is a sequence-based power save signal, wherein the sequence-based power save signal is used to wake up a user device and trigger a preparation period.
9. The wireless communication method of claim 1, 7 or 8, wherein the configuration signaling further comprises configuration signaling to define a preparation period, and wherein the configuration signaling to define a preparation period comprises one or more of: tracking reference signal TRS configuration, L1 layer-reference signal received power L1-RSRP calculation configuration, mobility management configuration and channel state information CSI acquisition configuration; wherein,
The TRS configuration includes one or more of the following: a 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 the following: nzp-CSI-resource set identifier ResourceSetId, nzp-CSI-RS-resource resources, NZP-CSI-RS-resource identifier resource id, aperiodic trigger offset apeiodactriggeringoffset, or repetition parameter;
the mobility management configuration includes one or more of the following: 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 the following: nzp-CSI-ResourceSetId, nzp-CSI-RS-resources, NZP-CSI-RS-ResourceID, or aperiodic triggeringOffset.
10. The wireless communication method of claim 1, 7 or 8, wherein the configuration signaling further comprises configuration signaling defining a preparation period, and wherein the configuration signaling defining a preparation period comprises a CSI resource offset, wherein the CSI resource offset is a time gap between a time slot in which a CSI-RS resource set is transmitted and a reference time slot, wherein the reference time slot is one of:
A slot where the DRX on duration begins;
PDCCH monitors a starting slot;
a time slot for transmitting a CSI report;
and transmitting the time slot of the corresponding signal.
11. The wireless communication method of claim 1, 7 or 8, wherein the configuration signaling further comprises configuration signaling defining a preparation period, and wherein the configuration signaling defining a preparation period 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:
a slot where the DRX on duration begins;
PDCCH monitors a starting slot;
a time slot for transmitting the CSI-RS resource set;
and transmitting the time slot of the corresponding signal.
12. The wireless communication method according to any one of claims 7 to 11, wherein when no configuration signaling for defining a preparation period is configured, 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: a slot where the DRX on duration begins; the PDCCH monitors the starting slot.
13. The wireless communication method of any of claims 7 to 11, wherein the configuration signaling for 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.
14. The wireless communication method of claim 13, wherein configuration signaling for defining a preparation period is determined by one of:
a combination of RRC signaling and DCI signaling, wherein the configuration of the N preparation periods is defined by the RRC signaling and the configuration of the preparation periods 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 the configuration of N preparation periods is defined by the RRC signaling, the configuration of M preparation periods of the configuration of N preparation periods is defined by the MAC-CE signaling, and the configuration of preparation periods of the configuration of M preparation periods is determined by the DCI signaling;
a combination of RRC signaling and MAC-CE signaling, wherein the configuration of the N preparation periods is defined by the RRC signaling and the 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.
15. The wireless communication method of claim 13 or 14, wherein the DCI signaling is transmitted on a PDCCH-based power saving signal.
16. The wireless communication method of claim 1, wherein a time gap between the WUD signal and an "on duration" state of DRX is determined by at least one of the following parameters: the bandwidth part indicator in the final DCI, BWP switching delay, subcarrier spacing, current BWP index.
17. The wireless communication method of claim 1, wherein a time gap between the WUD signal and an "on duration" state of DRX is equal to 3 slots.
18. The wireless communication method of claim 1, wherein the WUD signal is configurable to: UE-specific signals, or UE group-specific signals.
19. The wireless communication method of claim 18, wherein if the WUD signal is configured as a UE group specific signal, all UEs in a group are configured with the same DRX cycle.
20. The wireless communication method of any of claims 1, 16-19, wherein during the DRX operation, a UE is able to receive the WUD signal during DRX operation.
21. The wireless communication method of any of claims 1, 16-19, wherein the WUD signal is determinable from at least one of: search space and control resource set.
22. The wireless communication method of claim 1, wherein the configuration signaling further comprises a slot offset threshold.
23. The wireless communication method of claim 22, wherein the slot offset threshold comprises one or more of:
A slot offset threshold of a physical downlink shared channel PDSCH;
a time slot offset threshold of a physical uplink shared channel PUSCH;
a slot offset threshold of PDSCH to hybrid automatic repeat request HARQ;
a slot offset threshold of the aperiodic channel state information reference signal CSI-RS;
a threshold of PDSCH decoding time;
threshold of PUSCH preparation time;
the channel state information CSI calculates a threshold of delay.
24. The wireless communication method of claim 1, wherein the configuration signaling further comprises:
configuration of a PDCCH-based power saving signal;
configuration of a sequence-based power saving signal; and
configuration of the preparation period.
25. The wireless communication method of claim 24, wherein the configuration of PDCCH-based power save signals, the configuration of sequence-based power save signals, and the configuration of preparation periods are determined by a predefined set of resources.
26. The wireless communication method of claim 25, wherein the predefined set of resources comprises at least one of: frequency range, BWP index, type of radio network temporary identifier RNTI, DRX parameters.
27. The wireless communication method of claim 26, wherein the configuration signaling is a configuration of a PDCCH-based power saving signal or a sequence-based power saving signal when the frequency range is FR1, and wherein the configuration signaling is a configuration of a preparation period when the frequency range is FR 2.
28. The wireless communication method of any of claims 1-27, wherein the configuration signaling is enabled by at least one of: RRC signaling, MAC-CE signaling, or DCI signaling.
29. 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;
the configuration signaling at least comprises the configuration of a DCI-based energy-saving WUD signal;
the WUD signal scrambles it by: a power saving wireless network temporary identifier;
the configuration includes: the time gap between the WUD signal and the "on duration" state of DRX.
30. The wireless communication method of any of claims 1-29, 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.
31. A wireless communication device comprising a processor configured to implement the method of any one of claims 1 to 30.
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| CN116938305A (en) * | 2022-03-31 | 2023-10-24 | 展讯通信（上海）有限公司 | Repeater control method and device, electronic equipment and storage medium |
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