Method, device and system for saving power in wireless network

Abstract

The present disclosure generally relates to a method, device and system for saving UE power consumption in wireless communication. A method performed by a UE includes: receiving a configuration message from a wireless communication node in a wireless network, the configuration message including configuration information associated with a PDCCH monitoring behavior set; receiving a control message from the wireless communication node, the control message indicating a PDCCH monitoring behavior in the PDCCH monitoring behavior set; and determining the PDCCH monitoring behavior based on the control message.

Description

Technical Field

[0001] The present disclosure relates generally to wireless communications, and more particularly to methods, devices, and systems for saving power consumption of user equipment (UE). Background Art

[0002] Energy efficiency is a key performance indicator in wireless communication networks. Controlling power consumption and reducing energy costs are critical to developing and deploying wireless communication networks. Power saving techniques play a vital role in achieving this goal. From the UE's perspective, the battery life of the UE has a great impact on the user experience. It is beneficial to have the ability to dynamically control the UE power consumption while still meeting performance requirements. Summary of the invention

[0003] The present disclosure is directed to a method, device, and system for saving UE power consumption in wireless communication.

[0004] In some embodiments, a method performed by a UE in a wireless network is disclosed. The method may include receiving a configuration message from a wireless communication node in the wireless network, the configuration message including configuration information associated with a physical downlink control channel (PDCCH) monitoring behavior set; receiving a control message from the wireless communication node, the control message indicating a PDCCH monitoring behavior in the PDCCH monitoring behavior set; and determining the PDCCH monitoring behavior based on the control message.

[0005] In some embodiments, a method performed by a wireless communication node in a wireless network is disclosed. The method may include sending a configuration message to a UE in the wireless network, the configuration message including configuration information associated with a physical downlink control channel (PDCCH) monitoring behavior set; sending a control message to the UE in the wireless network, the control message indicating a PDCCH monitoring behavior in the PDCCH monitoring behavior set, wherein the control information triggers the UE to determine the PDCCH monitoring behavior based on the control signal.

[0006] In some embodiments, there is a UE and / or a wireless communication node comprising a processor and a memory, wherein the processor is configured to read the code from the memory and implement any method described in any embodiment.

[0007] In some embodiments, a computer program product includes a computer readable program medium code stored thereon, which, when executed by a processor, causes the processor to implement any method described in any embodiment.

[0008] The above-described embodiments and other aspect alternatives of their implementation are described in more detail in the following figures, the description and the claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 An example wireless communication network is shown.

[0010] Figure 2 An example wireless network node is shown.

[0011] Figure 3 An example user device is shown.

[0012] Figure 4A An exemplary association between a search space set group (SSSG) and a physical downlink control channel (PDCCH) monitoring skip duration list is shown.

[0013] Figure 4B Another exemplary association between the SSSG and a list of PDCCH monitoring skip durations is shown.

[0014] Figure 4C An exemplary association between a bandwidth part (BWP) and a list of PDCCH monitoring skip durations is shown.

[0015] Figure 4D Another exemplary association between a BWP and a list of PDCCH monitoring skip durations is shown.

[0016] Figure 5 Exemplary steps for configuring and instructing UE PDCCH monitoring behavior are shown.

[0017] Figure 6 An exemplary BWP configured with a SSSG list is shown.

[0018] Figure 7 Exemplary time points at which UE PDCCH monitoring behavior is applied are shown.

[0019] Figure 8 An exemplary application delay for PDCCH monitoring behavior is shown.

[0020] Fig. 9 Another exemplary application delayed PDCCH monitoring behavior is shown. DETAILED DESCRIPTION

[0021] Wireless communication network

[0022] Figure 1 An exemplary wireless communication network 100 is shown including a core network 110 and a radio access network (RAN) 120. The core network 110 also includes at least one mobility management entity (MME) 112 and / or at least one access and mobility management function (AMF). Other functions that may be included in the core network 110 are not described in detail. Figure 1. RAN 120 also includes multiple base stations, such as base stations 122 and 124. The base station may include at least one evolved Node B (eNB) for 4G LTE, or a next generation Node B (gNB) for 5G New Radio (NR), or any other type of signal transmission / reception device such as UMTS Node B. eNB 122 communicates with MME 112 via an S1 interface. Both eNB 122 and gNB 124 are connected to AMF 114 via an Ng interface. Each base station manages and supports at least one cell. For example, base station gNB 124 may be configured to manage and support cell 1, cell 2, and cell 3.

[0023] The gNB 124 may include one centralized unit (CU) and at least one distributed unit (DU). The CU and DU may be co-located at the same location, or they may be separated at different locations. The CU and DU may be connected via an F1 interface. Alternatively, for an eNB capable of connecting to a 5G network, it may also be similarly divided into one CU and at least one DU, referred to as ng-eNB-CU and ng-eNB-DU, respectively. The ng-eNB-CU and ng-eNB-DU may be connected via a W1 interface.

[0024] The wireless communication network 100 may include one or more tracking areas. A tracking area may include a group of cells managed by at least one base station. For example, tracking area 1, labeled 140, includes cell 1, cell 2, and cell 3, and may additionally include cells that may be managed by other base stations and are not in the tracking area. Figure 1 1. The wireless communication network 100 may also include at least one UE 160. The UE may select a cell among a plurality of cells supported by a base station to communicate with the base station over an over-the-air (OTA) wireless communication interface and resources, and may reselect a cell for communication as the UE 160 travels in the wireless communication network 100. For example, the UE 160 may initially select cell 1 to communicate with the base station 124, and then it may reselect cell 2 at some later point in time. The cell selection or reselection of the UE 160 may be based on wireless signal strength / quality and other factors in the various cells.

[0025] The wireless communication network 100 may be implemented as, for example, a 2G, 3G, 4G / LTE or 5G cellular communication network. Accordingly, base stations 122 and 124 may be implemented as 2G base stations, 3G NodeBs, LTE eNBs or 5G NR gNBs. UE 160 may be implemented as a mobile or fixed communication device capable of accessing the wireless communication network 100. UE 160 may include, but is not limited to, a mobile phone, a laptop computer, a tablet computer, a personal digital assistant, a wearable device, an Internet of Things (IoT) device, an MTC / eMTC device, a distributed remote sensor device, a roadside assistance device, an XR device and a desktop computer. UE 160 may also be generally referred to as a wireless communication device or a wireless terminal. UE 160 may support side link communication to another UE via a PC5 interface.

[0026] Although the following description focuses on Figure 1 The cellular wireless communication system shown is used in the embodiment, but the basic principles are applicable to other types of wireless communication systems for paging wireless devices. These other wireless systems may include, but are not limited to, Wi-Fi, Bluetooth, ZigBee, and WiMax networks.

[0027] Figure 2 An example of an electronic device 200 implementing a network base station (e.g., a radio access network node), a core network (CN), and / or operations and maintenance (OAM) is shown. Optionally, in one embodiment, the example electronic device 200 may include a wireless transmission / reception (Tx / Rx) circuit 208 to transmit / receive communications with a UE and / or other base stations. Optionally, in one embodiment, the electronic device 200 may also include a network interface circuit 209 to communicate the base station with other base stations and / or the core network, for example, optical or wired interconnection, Ethernet, and / or other data transmission media / protocols. The electronic device 200 may optionally include an input / output (I / O) interface 206 to communicate with an operator or the like.

[0028] The electronic device 200 may also include a system circuit 204. The system circuit 204 may include a processor 221 and / or a memory 222. The memory 222 may include an operating system 224, instructions 226, and parameters 228. The instructions 226 may be configured for one or more of the processors 221 to perform the functions of a network node. The parameters 228 may include parameters for supporting the execution of the instructions 226. For example, the parameters may include network protocol settings, bandwidth parameters, radio frequency mapping assignments, and / or other parameters.

[0029] Figure 3An example of an electronic device for implementing a terminal device 300 (e.g., a user equipment (UE)) is shown. UE 300 may be a mobile device, such as a smart phone or a mobile communication module provided in a vehicle. UE 300 may include some or all of the following components: a communication interface 302, a system circuit 304, an input / output interface (I / O) 306, a display circuit 308, and a storage device 309. The display circuit may include a user interface 310. The system circuit 304 may include any combination of hardware, software, firmware, or other logic / circuits. The system circuit 304 may be implemented, for example, with one or more systems on a chip (SoC), application specific integrated circuits (ASICs), discrete analog and digital circuits, and other circuits. The system circuit 304 may be part of an implementation of any desired function in UE 300. In this regard, the system circuit 304 may include, for example, logic that facilitates decoding and playing music and video (e.g., MP3, MP4, MPEG, AVI, FLAC, AC3, or WAV decoding and playback); running applications; accepting user input; saving and retrieving application data; establishing, maintaining, and terminating cellular phone calls or data connections, such as Internet connections; establishing, maintaining, and terminating wireless network connections, Bluetooth connections, or other connections; and displaying relevant information on the user interface 310. The user interface 310 and the input / output (I / O) interface 306 may include a graphical user interface, a touch-sensitive display, tactile feedback or other tactile output, voice or facial recognition input, buttons, switches, speakers, and other user interface elements. Additional examples of the I / O interface 306 may include microphones, video and still image cameras, temperature sensors, vibration sensors, rotation and orientation sensors, headphone and microphone input / output jacks, universal serial bus (USB) connectors, memory card slots, radiation sensors (e.g., IR sensors), and other types of inputs.

[0030] Reference Figure 3, the communication interface 302 may include a radio frequency (RF) transmission (Tx) and reception (Rx) circuit 316, which handles the transmission and reception of signals through one or more antennas 314. The communication interface 302 may include one or more transceivers. The transceiver may be a wireless transceiver, which includes a modulation / demodulation circuit, a digital-to-analog converter (DAC), a shaping table, an analog-to-digital converter (ADC), a filter, a waveform shaper, a filter, a preamplifier, a power amplifier and / or other logic for transmission and reception through one or more antennas or (for some devices) through a physical (e.g., wired) medium. The transmitted and received signals may follow any of a variety of formats, protocols, modulations (e.g., QPSK, 16-QAM, 64-QAM, or 256-QAM), channels, bit rates, and encodings. As a specific example, the communication interface 302 may include a transceiver that supports transmission and reception under 2G, 3G, BT, WiFi, Universal Mobile Telecommunications System (UMTS), High Speed ​​Packet Access (HSPA) +, 4G / Long Term Evolution (LTE), and 5G standards. However, the techniques described below are applicable to other wireless communication technologies, whether derived from the 3rd Generation Partnership Project (3GPP), the GSM Association, 3GPP2, IEEE, or other partner or standards body.

[0031] Reference Figure 3 , the system circuit 304 may include one or more processors 321 and a memory 322. The memory 322 stores, for example, an operating system 324, instructions 326, and parameters 328. The processor 321 is configured to execute the instructions 326 to implement the desired functions of the UE 300. The parameters 328 may provide and specify configuration and operating options for the instructions 326. The memory 322 may also store any BT, WiFi, 3G, 4G, 5G, or other data that the UE 300 will send or has received through the communication interface 302. In various embodiments, the system power for the UE 300 may be provided by a power storage device such as a battery or a transformer.

[0032] Physical Downlink Control Channel (PDCCH) monitoring

[0033] PDCCH supports data and signaling messages in wireless communication networks and plays a key role in various aspects, including, for example, downlink (DL) scheduling assignments, uplink (UL) scheduling grants, power control, paging indications, etc. UEs need to continuously monitor PDCCH in various ways. For example, a UE in a connected state may periodically monitor PDCCH based on a discontinuous reception mode (DRX). As another example, a UE in an idle or inactive state may need to monitor PDCCH for paging DCI, paging messages, system information updates, etc.

[0034] When monitoring PDCCH, the UE needs to turn on certain hardware such as its RF chain, which results in power consumption. Therefore, reducing the frequency of PDCCH monitoring may help reduce power consumption. The base station can coordinate with the UE to achieve such a goal. For example, the base station may be able to predict or estimate that the UE will have no downlink data / signals to monitor for a period of time. The base station can then inform the UE, so the UE can skip PDCCH monitoring for a period of time without adding too much delay.

[0035] Search Space Set Group (SSSG) Switching

[0036] In a wireless communication network, a UE may be configured with one or more search space set groups (SSSGs). Each SSSG may include zero, one or more search space (SS) sets, and may have its own characteristics. For example, each SSSG may be associated with a different PDCCH monitoring periodicity and may have a different number of search space sets. The UE may monitor the PDCCH based on one SSSG in the SSSG. The SSSG in which the UE monitors may be referred to as an activated SSSG. If the SSSG is configured with more search space sets and / or a shorter PDCCH monitoring periodicity, the UE may consume more energy. In another embodiment, the UE may monitor the PDCCH based on more than one SSSG.

[0037] Based on UE service characteristics, the base station can instruct the UE to switch from one SSSG to another in order to meet specific performance requirements and minimize UE power consumption.

[0038] UE PDCCH monitoring behavior

[0039] In the present disclosure, various UE PDCCH monitoring behaviors are described. The base station can coordinate with the UE or instruct the UE to dynamically select one of the PDCCH monitoring behaviors to meet specific service requirements, such as quality of service (QoS) requirements. These behaviors can be divided into two types: the first type involves UE PDCCH monitoring skipping (within a specific duration), and the second type involves UE SSSG switching.

[0040] The first type of PDCCH monitoring behavior may include:

[0041] Deactivate PDCCH monitoring skipping (ie, deactivate the PDCCH monitoring skipping function), or monitor the PDCCH according to the search space set configuration.

[0042] Skip PDCCH monitoring for a period of time.

[0043] In one embodiment, deactivating PDCCH monitoring skipping may mean that the PDCCH monitoring skipping behavior is not triggered or activated. In another embodiment, deactivating PDCCH monitoring skipping may mean that the UE monitors the PDCCH according to the search space set configuration.

[0044] There may be multiple candidate durations for which the UE can skip monitoring. Each duration corresponds to the UE PDCCH monitoring behavior. For example, multiple candidate durations may include 5 ms / time slot and 10 ms / time slot. Each duration represents or implies a behavior. For example, one behavior may be "skip PDCCH monitoring 5 ms / time slot", while another behavior may be "skip PDCCH monitoring 10 ms / time slot". In this way, the UE can be configured with a list of PDCCH monitoring skip durations (also referred to as PDCCH skip durations), each PDCCH skip duration corresponding to a specific behavior. Alternatively, the UE can be configured with multiple lists of PDCCH skip durations. For example, each list can serve different SSSGs, different bandwidth parts (BWPs), different service cells, different service cell groups, etc. More details will be described in later chapters.

[0045] The second type of PDCCH monitoring behavior may include:

[0046] Stop listening to the search space (SS) set associated with SSSG #1 and SSSG #2 (if configured), and start listening to the SS set associated with SSSG #0.

[0047] Stop listening to the search space (SS) set associated with SSSG#0 and SSSG#2 (if configured), and start listening to the SS set associated with SSSG#1.

[0048] Stop listening to the search space (SS) set associated with SSSG#0 and SSSG#1, and start listening to the SS set associated with SSSG#2.

[0049] In the present disclosure, the first type of PDCCH monitoring behavior may also be referred to as PDCCH monitoring skipping behavior (or simply referred to as PDCCH skipping behavior), and the second type of PDCCH monitoring behavior may also be referred to as SSSG switching behavior.

[0050] In the present disclosure, there may be a first PDCCH monitoring behavior subset including a first type of PDCCH monitoring behavior, and a second PDCCH monitoring behavior subset including a second type of PDCCH monitoring behavior. The PDCCH monitoring behavior set includes these two behavior subsets.

[0051] In one embodiment, the UE may be configured with various PDCCH monitoring behaviors, for example, via radio resource control (RRC) signaling. The following list shows some exemplary configurations of PDCCH monitoring behaviors:

[0052] · The UE is configured with a PDCCH skip duration list (also referred to as a PDCCH skip duration list). The number of PDCCH skip durations in the list can be 1, 2, and 3.

[0053] · The UE is configured with a SSSG list (also referred to as SSSG list). The number of SSSGs in the list can be 1, 2 or 3.

[0054] • The UE is configured with 2 SSSGs and 1 PDCCH skip duration.

[0055] • The UE is configured with 2 SSSGs and 2 PDCCH skipping durations.

[0056] • The UE is configured with 3 SSSGs and 1 PDCCH skip duration.

[0057] The UE is not configured with any PDCCH monitoring behavior, that is, the PDCCH monitoring skipping function is disabled or deactivated.

[0058] In one embodiment, the SSSG list can be configured at a finer granularity rather than at the UE level. For example, the SSSG list can be configured at the BWP level, BWP group level, serving cell level, serving cell group level, etc.

[0059] In one embodiment, when the SSSG is configured at the BWP level, the BWP group level, the serving cell level, the serving cell group level, etc., this means that the SSSG serves the BWP level, the BWP group level, the serving cell level, the serving cell group level, etc. For example, each SSS may be associated with zero, one, or two SSSG IDs, and the SSSG list configured in the BWP is formed by the SSSGs associated with the SSS configured in the BWP. For another example, each SSS may be associated with zero, one, or two SSSG IDs, and the SSSG list configured in the BWP group is formed by the SSSGs associated with the SSS configured in the BWP group.

[0060] In one embodiment, the base station may explicitly configure the SSSG list for the UE. In one embodiment, the UE may derive the SSSG list based on relevant information such as search space set (SSS) allocation information. In this case, the SSSG list is implicitly configured.

[0061] Once the UE is configured with PDCCH monitoring behavior, the base station can instruct the UE to apply a specific behavior via control signaling, which will be described in further detail in the following sections. The control signaling can instruct the UE to switch to a target SSSG in the SSSG list, or skip PDCCH monitoring for a specific duration as indicated by the control signaling.

[0062] In the present disclosure, a list (or set) may include multiple elements (e.g., duration, SSSG). The number of elements in a list may be referred to as the size or length of the list. For example, a PDCCH skip duration list includes {1 slot, 2 slots, 3 slots, 4 slots}, and the size of the list is 4. For another example, an SSSG list includes {SSSG#0, SSSG#1, SSSG#2}, and the size of the list is 3.

[0063] In one embodiment, when a UE starts listening to a search space (SS) set associated with a particular SSSG, the UE may choose to stop listening to SS sets associated with other SSSGs.

[0064] The PDCCH skip duration list may be configured at different levels or different entities.

[0065] In one embodiment, reference Figure 4A , a PDCCH skip duration list is configured for each SSSG. In one embodiment, the size of the PDCCH skip duration list is the same for all SSSGs in the same BWP, or the same service cell, or the same service cell group. For example, SSSG#0 and SSSG#1 are in the same BWP, and the two corresponding PDCCH skip duration lists (i.e., SkipDurationList 1 and SkipDuration List 2) are the same size. In this case, by using PDCCH skip duration lists of the same size, control signaling can use an information field of a constant length (e.g., a constant bit width) because the number of candidate durations in the list is the same. In another embodiment, the PDCCH skip duration lists may not all have the same size. In this case, in order to indicate the target duration based on the candidate durations in different lists of various sizes, the information fields as described above may need to have different lengths (e.g., different bit widths).

[0066] In one embodiment, reference Figure 4BMultiple SSSGs, such as SSSG#0 and SSSG#1, may share the same PDCCH skip duration list (SkipDurationList 1). These multiple SSSGs may be in the same BWP, or in the same serving cell, or in the same serving cell group.

[0067] In one embodiment, reference Figure 4C , a PDCCH skip duration list is configured for each BWP (or each BWP group).

[0068] In one embodiment, reference Figure 4D , multiple BWPs (or BWP groups) can share the same PDCCH skip duration list.

[0069] In one implementation, a PDCCH skip duration list is configured for each serving cell (or each serving cell group).

[0070] In one embodiment, multiple serving cells (or serving cell groups) may share the same PDCCH skip duration list.

[0071] Control or instruct UE PDCCH monitoring behavior

[0072] In various embodiments, reference Figure 5 , describes a method for controlling UE PDCCH monitoring behavior. The method may include part or all of the following steps.

[0073] Step 501: The base station sends a configuration message to the UE for configuring the PDCCH monitoring behavior. The configuration message may include a list of PDCCH monitoring behaviors that need to be configured for the UE. This configuration method is called explicit configuration. The configuration message may also include a parameter list related to the PDCCH monitoring behavior, and the parameter list implicitly indicates the PDCCH monitoring behavior. For example, the parameter list may include a list of PDCCH monitoring skip durations, such as 2 milliseconds / time slot, 5 milliseconds / time slot, and 10 milliseconds / time slot. Each duration corresponds to a PDCCH monitoring behavior that skips PDCCH monitoring during the duration. That is, these three PDCCH monitoring behaviors will be configured: skip PDCCH monitoring 2 milliseconds / time slot, skip PDCCH monitoring 5 milliseconds / time slot, and skip PDCCH monitoring 10 milliseconds / time slot. The SSSG switching behavior may be indicated by a parameter list such as an SSSG number / index. This configuration method is called implicit configuration because the PDCCH monitoring behavior is derived from these parameters. The list of PDCCH monitoring skip durations and the list of SSSG numbers / indexes can be sent to the UE in various ways. For example, they may be sent together in one signaling, or they may be sent separately in one signaling.The signaling may include higher layer signaling such as an RRC message.

[0074] Step 502: The UE has a PDCCH monitoring behavior list configured in step 501 according to the configuration message. In order to trigger a change in the PDCCH monitoring behavior, the base station sends a control message to the UE to indicate the specific PDCCH monitoring behavior that the UE needs to apply (or activate). The control message can be in the form of a downlink control information (DCI) message. The PDCCH monitoring behavior indication information can be carried in one or more DCI fields of the DCI message. For example, the UE may be monitoring SSSG#0 associated with the PDCCH skip duration list. The PDCCH skip duration list has 4 candidate durations, and the DCI field can indicate a specific duration in the PDCCH skip duration list through a bitmap or code point.

[0075] Step 503, the UE decodes the control message (such as the DCI field) to obtain the indicated PDCCH monitoring behavior. In order to decode the DCI field, the UE may need to first determine the bit width of the DCI field, because various bit widths may need to be used to accommodate, for example, PDCCH skip duration lists of various lengths. In one embodiment, the UE may determine the indicated PDCCH monitoring behavior based on a mapping relationship between a code point or a bitmap of the DCI field and the PDCCH monitoring behavior. In the present disclosure, the DCI field may include at least one bit, and the code point is a value represented by the at least one bit. The DCI field may use different bit combinations to represent multiple code points.

[0076] Step 504: The UE applies the indicated PDCCH monitoring behavior. For example, the UE may skip PDCCH monitoring for a duration associated with the indicated PDCCH monitoring behavior or for a duration specified in the indicated monitoring behavior. For example, the UE may skip PDCCH monitoring for 5 ms / timeslot or 10 ms / timeslot, as determined by the indicated PDCCH monitoring behavior. For another example, the UE may start monitoring the search space set associated with SSSG#2 and stop monitoring the search space sets associated with SSSG#0 and SSSG#1.

[0077] Further details will be described below.

[0078] Determination of the bit width of the control signaling field

[0079] In some embodiments, in order to guide or indicate to the UE which PDCCH monitoring behavior to apply (for example, skipping PDCCH monitoring for a duration in the PDCCH skip duration list, or switching to another SSSG in the SSSG list), the base station can send a control signal such as DCI to the UE.

[0080] like Figure 5 As shown, in step 503, the UE needs to determine the indicated PDCCH monitoring behavior based on the control message (e.g., DCI message). In one embodiment, the DCI field of the DCI message may carry the indication information. The UE may map the value of the DCI field (e.g., code point (CP)) to a specific PDCCH monitoring behavior. In one embodiment, the mapping may also be performed based on a bitmap formed by the bits of the DCI field.

[0081] In one implementation, the bit width of the DCI field may be predefined. In one implementation, the base station and / or the UE needs to determine the bit width of the DCI field.

[0082] The following process may be applied to a BWP, a BWP group, a serving cell, or a serving cell group.

[0083] In some embodiments, if the PDCCH skip duration list is not configured, and if the SSSG list is configured, the bit width may be determined according to one of the following:

[0084] Option 1:

[0085] The number of SSSGs configured in one of the following (in the SSSG list): BWP, or serving cell, or serving cell group where the UE monitors DCI or the indicated PDCCH monitoring behavior is to be applied to this serving cell group. Figure 6 As an example, 4 search space sets (SSSs) are configured in BWP#1, indexed from 1 to 4. SSS#1 is assigned to SSSG 1 and 2, SSS#2 is assigned to SSSG 0 and 1, SSS#4 is assigned to SSSG 0 and 1, and SSS#3 is not assigned to any SSSG. In this example, the SSSG list in BWP#1 contains {SSSG 0, ​​SSSG 1, SSSG 2}, and the number of SSSGs in the SSSG list is 3. The number of SSSGs in a BWP group, a serving cell, or a serving cell group can be derived similarly and is not described in detail here.

[0086] As another example, assuming that the number of SSSGs is A, if A is less than 3, the bit width may be set to 1, and if A is equal to or greater than 3, the bit width may be set to 2.

[0087] Option 2:

[0088] The number of SSSGs configured in the predefined BWP. In one embodiment, the predefined BWP may be configured via RRC signaling. In one embodiment, the predefined BWP may be the BWP with the lowest index in a set of BWPs to which the PDCCH monitoring behavior indicated by the control signal is to be applied. In one embodiment, the predefined BWP may be a default BWP.

[0089] Option 3:

[0090] The maximum index (in the SSSG list) of the SSSG configured in one of the following: BWP, or serving cell, or serving cell group in which the UE monitors DCI or the indicated PDCCH monitoring behavior is to be applied to the serving cell group. For example, 4 search space sets (SSs) are configured in BWP#1, with indices from 1 to 4. SSS#1 is assigned to SSSG 1 and 2, SSS#2 is assigned to SSSG 0 and 1, SSS#4 is assigned to SSSG 0 and 1, and SSS#3 is not assigned to any SSSG. In this example, the maximum index of the SSSG is 2. As another example, assuming that the maximum index of the SSSG is B, if B is less than 2, the bit width can be set to 1, and if B is equal to or greater than 2, the bit width can be set to 2.

[0091] In some embodiments, if a PDCCH skip duration list is configured, and if a SSSG list is not configured, the bit width may be determined according to one of the following:

[0092] Option 1:

[0093] The maximum number of PDCCH skip durations configured in the PDCCH skip duration list among all PDCCH skip duration lists configured in one of the following: a set of SSSGs, a set of BWPs, a set of BWP groups, a set of serving cells, or a set of serving cell groups. A set can contain only one element.

[0094] In one embodiment, the same indication via the control signal may apply to all BWPs in a BWP group.

[0095] In one embodiment, the same indication via the control signal may be applied to all serving cells in the serving cell group.

[0096] For example, refer to Figure 4A , SkipDurationList 1 includes 3 durations, and SkipDuration List2 includes 2 durations. In this case, the maximum number of PDCCH skip durations is 3.

[0097] As another example, assuming that the maximum number of PDCCH skip durations is A, if A is less than 2, the bit width may be set to 1, and if A is equal to or greater than 2, the bit width may be set to 2.

[0098] Option 2:

[0099] The number of PDCCH skip durations configured in the predefined BWP. In one embodiment, the predefined BWP may be configured by RRC signaling. In one embodiment, the predefined BWP may be the BWP with the lowest index in a set of BWPs to which the PDCCH monitoring behavior indicated by the control signal is to be applied. In one embodiment, the predefined BWP may be a default BWP.

[0100] In some embodiments, if both the PDCCH skip duration list and the SSSG list are configured, the bit width may be set to 2.

[0101] PDCCH monitoring behavior indication via bitmap or codepoint

[0102] In some embodiments, a code point or a bitmap of a field in the control signaling may be used to indicate the PDCCH monitoring behavior, for example, a code point or a bitmap carried in a DCI field.

[0103] In one embodiment, reference Figure 4A As an example, if a PDCCH skip duration list is configured for each SSSG and an SSSG list (eg, the SSSG list contains SSSG#0 and SSSG#1) is also configured, the bit width of this field may be set to 2.

[0104] In one embodiment, still referring to Figure 4A As an example, if there are 2 SSSGs in the SSSG list, and the number of PDCCH skip durations corresponding to the 2 SSSGs in the PDCCH skip duration list is different, that is, the size of SkipDurationList 1 is not equal to the size of SkipDurationList 2, then the exemplary code point interpretation is listed in Table 1 below:

[0105] Table 1: PDCCH monitoring behavior mapping

[0106]

[0107] In this embodiment, the activated SSSG may refer to the SSSG where the UE monitors the DCI. Figure 4A , assuming that SSSG#1 is activated, if the size of SkipDurationList 2 is greater than or equal to 2, the bitmap "11" indicates that PDCCH monitoring skipping for duration #2 is to be applied to SSSG#1. As another example, still assuming that SSSG#1 is activated, if the size of SkipDurationList 2 is less than 2, the bitmap "11" is retained.

[0108] In one embodiment, there are 3 SSSGs in the SSSG list, and each SSSG in the list has an associated PDCCH skip duration list. In some embodiments, the SSSGs in the list may not be associated with a PDCCH skip duration list. In other words, the SSSGs in the list may be associated with zero PDCCH skip duration. In the case where at least two PDCCH skip duration lists have different sizes, exemplary code point interpretations are listed in Table 2 below:

[0109] Table 2: PDCCH monitoring behavior mapping

[0110]

[0111] Control messages are applied to BWP groups or serving cell groups

[0112] As described in the above sections, the base station may send a control message to the UE to indicate the PDCCH monitoring behavior. The UE may then apply the indicated PDCCH monitoring behavior. For example, the UE may switch to another SSSG, or the UE may skip monitoring the PDCCH for the duration indicated by the control message. The following description uses DCI as an exemplary control message. However, the control message may be sent in other ways.

[0113] In some embodiments, the UE may be configured with one or more serving cell groups, for example, via high-layer signaling. Each serving cell group includes a group of serving cells. If the UE receives a DCI indicating a PDCCH monitoring behavior in a serving cell associated with the serving cell group, the indicated PDCCH monitoring behavior may be applied to all serving cells in the same serving cell group. That is, a single DCI may serve all serving cells in the serving cell group.

[0114] In some embodiments, in carrier aggregation (CA) mode, if the UE receives a DCI indicating the PDCCH monitoring behavior in a serving cell under CA mode (or CA configuration), the indicated PDCCH monitoring behavior may also be applied to all serving cells associated under the same CA mode (or CA configuration).

[0115] In some embodiments, the UE may be configured to have the same number and type of PDCCH monitoring behavior for all activated downlink (DL) BWPs in the same serving cell group. For example, each activated DL BWP may be associated with a list of PDCCH monitoring skip durations of equal size. Figure 4C, assuming that BWP#0 and BWP#1 are both activated DL BWPs, each in one serving cell, the size of SkipDurationList 1 is equal to the size of SkipDuration List 2. For another example, each activated DL BWP may be associated with a list of SSSGs of equal size.

[0116] In some embodiments, the UE may configure the same number of PDCCH monitoring behaviors for all activated DL BWPs in the same serving cell group. The number of PDCCH monitoring behaviors is the sum of the PDCCH skip duration and the number of SSSGs. For example, BWP#0 and BWP#1 are both activated DL BWPs, each in a serving cell in the same serving cell group. BWP#0 is configured with 1 PDCCH skip duration and 2 SSSGs, and BWP#2 is configured with 3 SSSGs. In this example, the total number of PDCCH monitoring behaviors for each BWP is 3.

[0117] In some embodiments, the bit width of the DCI field indicating the PDCCH monitoring behavior can be determined by the size of the PDCCH skip duration list associated with the BWP and / or the number of SSSGs in the DL BWP (or the number of SSSGs in the SSSG list associated with the BWP). However, different DL BWPs in different service cells may have different configurations (e.g., PDCCH skip duration list and / or SSSG list), so the required bit width for indicating the PDCCH monitoring behavior may be different depending on the BWP. The same concept also applies to the service cell. Table 3 below shows service cells 1 and 2 in a service cell group, where the two service cells have different PDCCH monitoring behavior configurations.

[0118] Table 3: Serving cells with different PDCCH monitoring behavior configurations

[0119]

[0120] In the present disclosure, in order to at least save control signaling overhead, various embodiments are disclosed in which a single DCI field can simultaneously indicate the PDCCH monitoring behavior of multiple BWPs or multiple serving cells, even if these multiple BWPs or multiple serving cells are configured with different PDCCH monitoring behaviors. One focus is how to interpret the same DCI field for different BWPs or different serving cells.

[0121] For example, serving cells 1, 2, 3, and 4 are configured in a serving cell group, and the UE receives a DCI indicating a PDCCH monitoring behavior in serving cell 1, which may also be applied to serving cells 2, 3, and 4. The UE may interpret the DCI field according to the required bit widths applied to different serving cells. In doing so, after receiving the DCI (and the DCI field indicating the PDCCH monitoring behavior), the UE may first need to adjust the bit width of the DCI field to the bit width required by the relevant serving cell, and then the UE may interpret the indicated PDCCH monitoring behavior based on the adjusted bit width.

[0122] In one implementation, if the bit width of the DCI field in the received DCI in the first serving cell is larger than the bit width required for interpretation of the PDCCH monitoring behavior of the second serving cell, the UE has several options for interpreting the DCI field of the second serving cell:

[0123] Option 1:

[0124] The number of least significant bits of the DCI field equal to the required bit width for indicating the PDCCH monitoring behavior in the second serving cell is used.

[0125] Option 2:

[0126] The number of most significant bits of the DCI field equal to the required bit width for indicating the PDCCH monitoring behavior in the second serving cell is used.

[0127] Option 3:

[0128] If the PDCCH monitoring behavior indicated in the first service cell is also available in the second service cell, the UE may also apply the same PDCCH monitoring behavior to the second service cell. For example, if the indicated PDCCH monitoring behavior is to apply the second duration in the list of PDCCH monitoring skip durations associated with the first service cell, and the second duration is also present in the list of PDCCH monitoring skip durations associated with the second service cell, the second duration is also applied to the second service cell. On the other hand, if the PDCCH monitoring behavior indicated in the first service cell is not available in the second service cell, the UE may not apply the PDCCH monitoring behavior.

[0129] In some embodiments, the first serving cell may be a primary cell (PCell). In some embodiments, the first serving cell may be a secondary cell (SCell) capable of scheduling the PCell. In some embodiments, the first serving cell may be a scheduling cell in cross-carrier scheduling. In some embodiments, the first serving cell may be a serving cell in a serving cell group. In some embodiments, the second serving cell may be an SCell. In some embodiments, the second serving cell may be a scheduled cell in cross-carrier scheduling. In some embodiments, the second serving cell may be a serving cell other than the first serving cell in a serving cell group.

[0130] The above embodiments use a serving cell as an example. The same concept is also applicable to multiple SSSGs, multiple BWPs, multiple activated BWPs, multiple BWP groups or multiple serving cell groups.

[0131] In one implementation, if the bit width of the DCI field in the received DCI in the first serving cell is smaller than the bit width required for interpretation of the PDCCH monitoring behavior of the second serving cell, the UE has several options to interpret the DCI field of the second serving cell:

[0132] Option 1:

[0133] The UE may prepend or append zeros to the DCI field before interpreting the DCI field until its size meets the required bit width.

[0134] Option 2:

[0135] If the PDCCH monitoring behavior indicated in the first serving cell is also available in the second serving cell, the UE may also apply the same PDCCH monitoring behavior to the second serving cell. On the other hand, if the PDCCH monitoring behavior indicated in the first serving cell is not available in the second serving cell, the UE may not apply the PDCCH monitoring behavior.

[0136] PDCCH monitoring behavior indication using SCell sleep indication field or DCI format 2-6

[0137] Various DCI fields may be used for secondary cell (SCell) sleep indication, and these fields may generally be referred to as SCell sleep indication fields. These fields may include at least one of the following: SCell sleep indication field, modulation and coding scheme field, new data indication field, redundant version field, hybrid automatic repeat request (HARQ) process number field, antenna port field, and demodulation reference signal (DMRS) sequence initialization field. In one embodiment, bits from one or more of the above fields may be grouped together to form one or more data blocks, and these one or more data blocks may be used to indicate whether the SCell group is switched to a sleep BWP. Specifically, each bit in the one or more data blocks formed by these SCell sleep indication fields may be used for a serving cell group. It should be noted that the UE does not monitor the PDCCH in the sleep BWP.

[0138] In some embodiments, if conditions are met, these SCell sleep indication fields may be reused or repurposed to indicate PDCCH monitoring behavior. For example, if a single HARQ acknowledgment (HARQ-ACK) request is not present or is set to 0, and all bits of the frequency domain resource assignment are set to 0 for resource allocation type 0, or are set to 1 for resource allocation type 1; or are set to 0 or 1 for a dynamic switching resource allocation type.

[0139] In some embodiments, the condition may be associated with a Radio Network Temporary Identifier (RNTI), a Control Resource Set (CORESET), or a DCI format.

[0140] In some embodiments, when these SCell sleep indication fields are reused to indicate the PDCCH monitoring behavior, the number of bits used can be determined by high-layer signaling. In some embodiments, the number of bits can be determined by the number of PDCCH skip durations and / or the number of SSSGs configured in the PCell. In some embodiments, the PDCCH monitoring behavior indication is used to indicate the PDCCH monitoring behavior of the PCell. In some embodiments, the PDCCH monitoring behavior indication is used to indicate the PDCCH monitoring behavior of all service cells in CA mode. In some embodiments, the PDCCH monitoring behavior indication is used to indicate the PDCCH monitoring behavior of all service cells in the service cell group.

[0141] In some embodiments, the number of bits used to indicate the PDCCH monitoring behavior can be determined by at least one of the following: the number of PDCCH skip durations in each service cell group, the maximum number of PDCCH skip durations in the service cell group, the number of bits required to indicate the PDCCH monitoring behavior in each service cell group, the maximum SSSG ID number configured in each service cell group, the number of service cell groups that are not in a dormant BWP, and the number of SSSGs configured in each service cell group. For example, the number of bits is equal to the sum of the number of bits required to indicate the PDCCH monitoring behavior in each service cell group. For another example, the number of bits is based at least on the number of service cell groups that are not in a dormant BWP.

[0142] In some embodiments, the PDCCH monitoring behavior indication and the SCell sleep indication may be combined or mixed by using the SCell sleep indication field.

[0143] For example, Table 4 below shows three service cell groups, each service cell group includes one service cell, and the PDCCH monitoring configuration of each service cell is different. The indication can be a "hybrid" method. That is, some bits in the SCell sleep indication field are used to indicate SCell sleep, and then the remaining bits are used to indicate PDCCH monitoring behavior. In this example, 3 bits can be allocated to indicate SCell sleep (one bit for each service cell group), and 5 bits can be allocated to indicate PDCCH monitoring behavior.

[0144] Table 4: Hybrid indication using the SCell Sleep Indication field

[0145]

[0146] In some embodiments, the number of bits of each data block is configured by RRC signaling. In some embodiments, the number of bits of each data block is a predefined value.

[0147] In some embodiments, if one or more PDCCH monitoring behaviors are configured in a serving cell group, a serving cell group may be associated with a data block (as described above). Each data block may include two bits used to indicate the PDCCH monitoring behavior. In some embodiments, if the number of bits in the data block is greater than the number of bits required for the indication, one of the following options may be used:

[0148] Option 1:

[0149] The UE uses the number of least significant bits equal to the number of bits required for indicating the PDCCH monitoring behavior in the serving cell group.

[0150] Option 2:

[0151] The UE uses the number of most significant bits equal to the number of bits required for indicating the PDCCH monitoring behavior in the serving cell group.

[0152] Option 3:

[0153] If the PDCCH monitoring behavior indicated in the first service cell group is also available in the second service cell group, the UE may also apply the same PDCCH monitoring behavior to the second service cell group. For example, if the indicated PDCCH monitoring behavior is to apply the second duration in the list of PDCCH monitoring skip durations associated with the first service cell group, and there is also a second duration in the list of PDCCH monitoring skip durations associated with the second service cell group, the second duration is also applied to the second service cell group. On the other hand, if the PDCCH monitoring behavior indicated in the first service cell group is not available in the second service cell group, the UE may not apply the PDCCH monitoring behavior.

[0154] The UE may interpret the data block according to the configuration of the serving cell receiving the DCI. The UE may apply the PDCCH monitoring behavior in the activated DL BWP of the serving cell receiving the DCI. If the indicated PDCCH monitoring behavior is configured in these activated BWPs, the UE may also apply the same PDCCH monitoring behavior to the remaining activated BWPs in the serving cell group (i.e., do not receive DCI in these remaining activated DL BWPs). Otherwise, if the specific activated BWP is not configured with the PDCCH monitoring behavior, the UE may not apply the PDCCH monitoring behavior.

[0155] In some embodiments, if one or more PDCCH monitoring behaviors are configured in the serving cell group, a serving cell group may be associated with a data block. Each data block includes a bit used to indicate the PDCCH monitoring behavior. If the number of bits of the data block used to indicate the PDCCH monitoring behavior is less than the required number of bits to indicate the PDCCH monitoring behavior, the UE may pre-add or append zeros to the data block until the size meets the required number of bits.

[0156] In some embodiments, the SCell sleep indication field may be divided into two groups: the first group is used to indicate SCell sleep, and the other group is used to indicate PDCCH monitoring behavior.

[0157] The above implementation uses the SCell sleep indication field as an example. The same concept can also be applied to one or more fields used in other formats of DCI, such as DCI formats 2-6 or other DCI.

[0158] In some embodiments, DCI format 2-6 can be used to indicate PDCCH monitoring behavior. In some embodiments, new fields in DCI format 2-6 can be used to indicate PDCCH monitoring adaptation. In some embodiments, one or more existing fields DCI of DCI format 2-6 can be repurposed to indicate PDCCH monitoring behavior. In some embodiments, DCI format 2-6 with a specific RNTI can be used to indicate PDCCH monitoring behavior.

[0159] Time and delay of applying PDCCH monitoring behavior - Example 1

[0160] Once the UE receives an indication or trigger for the PDCCH monitoring behavior, the UE may apply the PDCCH monitoring behavior immediately or with delay. The indication may be carried in a control message or control signaling. The trigger may include a timer, such as a SSSG timeout timer. In some embodiments, a delay is introduced to avoid interrupting ongoing tasks on the UE.

[0161] In some embodiments, the UE may apply the PDCCH monitoring behavior immediately after receiving the DCI (or any signal or trigger indicating the PDCCH monitoring behavior), for example, in the next time slot after the time slot in which the DCI is received, or in the next symbol after the last symbol (i.e., orthogonal frequency division multiplexing (OFDM) symbol) in which the DCI is received.

[0162] In some embodiments, the UE may apply the PDCCH monitoring behavior after the timer expires. For example, the UE may apply the PDCCH monitoring behavior at the next symbol or time slot after the last symbol or last time slot of the SSSG switching timer expires. For another example, the UE may apply the PDCCH monitoring behavior after a predefined number of symbols or time slots after the last symbol or last time slot of the SSSG switching timer expires.

[0163] In some embodiments, the UE may apply the PDCCH monitoring behavior in the next symbol or slot after the last slot or last symbol of the PDCCH transmission carrying the DCI indication. Alternatively, the UE may apply the PDCCH monitoring behavior after a predefined number of symbols or slots after the last slot or last symbol of the PDCCH transmission carrying the DCI indication.

[0164] In some embodiments, the UE may apply the PDCCH monitoring behavior after the last slot of the PDCCH skip duration. For example, the UE may apply the PDCCH monitoring behavior in the next slot / symbol after the last slot / symbol of the PDCCH skip duration. For another example, the UE may apply the PDCCH monitoring behavior after a predefined number of symbols or slots after the last slot of the PDCCH skip duration.

[0165] In some embodiments, the UE may apply the PDCCH monitoring behavior after one of the following:

[0166] The last slot / symbol of an ACK transmission for confirming Physical Downlink Shared Channel (PDSCH) reception indicated by the DCI;

[0167] The last slot / symbol of a physical uplink shared channel (PUSCH) transmission scheduled by DCI;

[0168] The timeslot for PUSCH transmission scheduled by DCI;

[0169] The last slot or symbol of the duration (X slots / symbols) after the time at which the PDCCH monitoring behavior is indicated (e.g., by a control message) or triggered (e.g., by a timer), where X is a positive integer;

[0170] • The last slot / symbol of the duration skipped for PDCCH monitoring.

[0171] Different application conditions may result in different application times for applying the PDCCH monitoring behavior. The time slot or symbol for starting or stopping the PDCCH monitoring behavior may be determined according to one of the following options:

[0172] Option 1:

[0173] The UE may apply the PDCCH monitoring behavior in the nth slot or symbol after the last DL slot / symbol overlapping the uplink (UL) slot / symbol for the associated ACK transmission or PUSCH transmission, where n is a positive integer. The ACK transmission may be a confirmation of the PDSCH decoding / reception indicated by the same control message indicating the PDCCH monitoring behavior. In another example, the ACK transmission may be a confirmation of the DCI. The PUSCH transmission may be scheduled by the same control message indicating the PDCCH monitoring behavior.

[0174] Reference Figure 8As an example, the UE receives DCI 810 indicating PDCCH monitoring behavior and scheduling PDSCH 812. The UE may first send ACK 814 in response to PDSCH 812 and then apply the PDCCH monitoring behavior at time slot 818. In this example, time slot 818 is the first time slot after the last DL time slot 820 overlapped with ACK 814.

[0175] Option 2:

[0176] The UE may apply the PDCCH monitoring behavior in the next slot or symbol after the last slot / symbol overlapping with the associated UL slot / symbol. The UL slot / symbol may be an ACK transmission or a PUSCH transmission.

[0177] Option 3:

[0178] The UE may apply the PDCCH monitoring behavior in the first DL slot or DL ​​symbol after the last slot / symbol of the associated UL transmission. The associated UL transmission may include an ACK transmission or a PUSCH transmission.

[0179] Option 4:

[0180] In some embodiments, the UE may apply PDCCH monitoring behavior in the nth DL slot or DL ​​symbol after the last UL slot / symbol of the associated UL transmission, where n may be an integer less than 10. The UL slot / symbol may be used for ACK transmission or PUSCH transmission.

[0181] Reference Figure 7 , the UE receives a DCI indicating a PDCCH monitoring behavior at slot / symbol 710. In one embodiment, the UE may apply the PDCCH monitoring behavior immediately (e.g., in the next slot / symbol after 710). In one embodiment, the UE may apply the PDCCH monitoring behavior at 712 after the timer expires. In one embodiment, the DCI may also schedule a PUSCH transmission. The UE may apply the PDCCH monitoring behavior at 714, which is the last slot / symbol of the PUSCH transmission.

[0182] Reference Figure 8-9 Some examples are given. Figure 8 , the UE receives DCI 810 indicating PDCCH monitoring behavior and scheduling PDSCH 812. The UE may first send ACK 814 in response to PDSCH 812, and then apply PDCCH monitoring behavior at the second time slot 816 after the ACK. Figure 8As shown, DL and UL are configured with different subcarrier spacing (SCS), and the length of the UL time slot (or symbol) and the length of the DL time slot (or symbol) are different. When represented by time slots or symbols, the PDCCH monitoring behavior application delay can be determined based on the UL SCS, that is, time slot 816 is based on the UL SCS. In another embodiment, as Fig. 9 As shown, the PDCCH monitoring behavior is applied at time slot 910, which is the second time slot after the ACK of the PDSCH, and the time slot 910 is based on the DL SCS.

[0183] Subcarrier spacing (SCS) associated with a slot / symbol

[0184] In some embodiments, the SCS is associated with the time slot / symbol mentioned in the previous section.

[0185] In some embodiments, the SCS is associated with at least one of:

[0186] ·Receive the SCS configuration of the PDCCH indicated by the PDCCH monitoring behavior;

[0187] SCS configuration for the PUCCH carrying HARQ-ACK information in response to the DCI-scheduled PDSCH;

[0188] SCS configuration for the PUCCH carrying HARQ-ACK information in response to the DCI;

[0189] SCS configuration of PUSCH scheduled by DCI;

[0190] The SCS configuration of the DL BWP to which the PDCCH monitoring behavior will be applied;

[0191] High-level configuration;

[0192] UE capabilities.

[0193] In some embodiments, if the DCI format is 1-1 or 1-2 and the DCI carries a DL assignment, the SCS can be determined as the minimum SCS configuration between the SCS configuration of the PDCCH receiving the PDCCH monitoring behavior indication and the SCS configuration of the PUCCH carrying the HARQ-ACK information in response to the PDSCH scheduled by the DCI.

[0194] In some embodiments, the SCS may be determined as a minimum SCS configuration between the SCS configuration of the PDCCH receiving the PDCCH monitoring behavior indication and the SCS configuration of the PUCCH carrying the HARQ-ACK information in response to the DCI.

[0195] In some embodiments, if the DCI format is 0-1 or 0-2, the SCS may be determined as the minimum SCS configuration between the SCS configuration of the PDCCH receiving the PDCCH monitoring behavior indication and the SCS configuration of the PUSCH scheduled by the DCI.

[0196] In some embodiments, if the DCI format is 1-1 or 1-2, the SCS can be determined as the maximum SCS configuration between the SCS configuration of the PDCCH receiving the PDCCH monitoring behavior indication and the SCS configuration of the PUCCH carrying the HARQ-ACK information in response to the DCI scheduled PDSCH.

[0197] In some embodiments, the SCS may be determined as the maximum SCS configuration between the SCS configuration of the PDCCH receiving the PDCCH monitoring behavior indication and the SCS configuration of the PUCCH carrying the HARQ-ACK information in response to the DCI.

[0198] In some embodiments, if the DCI format is 0-1 or 0-2, the SCS may be determined as the maximum SCS configuration between the SCS configuration of the PDCCH receiving the PDCCH monitoring behavior indication and the SCS configuration of the PUSCH scheduled by the DCI.

[0199] In some embodiments, the SCS may be determined based on the SCS configuration of the PDCCH receiving the PDCCH monitoring behavior indication.

[0200] In some embodiments, if the DCI format is 1-1 or 1-2 and the DCI carries a DL assignment, the SCS may be determined based on the SCS configuration of the PUCCH carrying HARQ-ACK information in response to the PDSCH scheduled by the DCI.

[0201] In some embodiments, the SCS may be determined based on the SCS configuration of the PUCCH carrying HARQ-ACK information in response to a DCI format without DL scheduling.

[0202] In some embodiments, if the DCI format is 0-1 or 0-2, the SCS may be determined based on the SCS configuration of the PUSCH scheduled by the DCI.

[0203] In some embodiments, if the DCI format is 1-1 or 0-1 and the DCI carries a DL assignment, the SCS can be determined as the minimum SCS configuration among the SCS configurations of the DL BWP in which the PDCCH monitoring behavior is to be applied and the SCS configurations of the PUCCH carrying the HARQ-ACK information in response to the PDSCH scheduled by the DCI.

[0204] In some embodiments, the SCS may be determined as the minimum SCS configuration among the SCS configuration of the DL BWP in which the PDCCH monitoring behavior is to be applied and the SCS configuration of the PUCCH carrying the HARQ-ACK information in response to the DCI.

[0205] In some embodiments, if the DCI format is 0-1 or 0-2, the SCS may be determined as the minimum SCS configuration among the SCS configuration of the DL BWP in which PDCCH monitoring behavior adaptation is to be applied and the SCS configuration of the DCI-scheduled PUSCH.

[0206] In some embodiments, the SCS may be determined as a minimum SCS configuration of DL BWPs in a set of DL BWPs in which PDCCH monitoring behavior adaptation is to be applied.

[0207] In some embodiments, the SCS may be determined as the maximum SCS configuration for the DL BWP in which PDCCH monitoring behavior adaptation is to be applied.

[0208] In some embodiments, the SCS may be determined based at least on a high-level configuration. For example, high-level signaling may configure a reference SCS for the UE. The SCS may be the same as the reference SCS. For another example, the SCS may be determined as the minimum SCS configuration among the reference SCS and the SCS configuration of the PDCCH receiving the PDCCH monitoring behavior indication. For another example, the SCS may be determined as the minimum SCS configuration among the reference SCS, the SCS configuration of the PDCCH receiving the PDCCH monitoring behavior indication, and the SCS configuration of the PUCCH carrying the HARQ-ACK information of the PDSCH scheduled in response to the DCI or the HARQ-ACK information of the DCI. For another example, the SCS may be determined as the minimum SCS configuration of the reference SCS, the SCS configuration of the PDCCH receiving the PDCCH monitoring behavior indication, and the SCS configuration of the PUSCH scheduled by the DCI.

[0209] In some embodiments, the SCS may be determined based at least on UE auxiliary information. The UE auxiliary information may report an SCS configuration, and the SCS may be the same as the SCS configuration reported by the UE auxiliary information. For example, the SCS may be determined as the minimum SCS configuration among the SCS reported by the UE auxiliary information, the SCS configuration of the PDCCH in which the PDCCH monitoring behavior indication is received, and the SCS configuration of the PUSCH scheduled by the DCI. For another example, the SCS may be determined as the minimum SCS configuration among the SCS reported by the UE auxiliary information, the SCS configuration of the PDCCH in which the PDCCH monitoring behavior indication is received, and the SCS configuration of the PUCCH carrying the HARQ-ACK information of the PDSCH scheduled in response to the DCI or the HARQ-ACK information of the DCI.

[0210] In some embodiments, the SCS may be determined based on the SCS configuration of the lowest or highest indexed DL BWP in a set of BWPs to which the PDCCH monitoring behavior is to be applied. In some embodiments, the SCS may be determined based on the SCS configuration of the default BWP. In some embodiments, the default BWP is BWP#0 (the BWP with index 0).

[0211] Time and delay of applying PDCCH monitoring behavior - Example 2

[0212] In some embodiments, after receiving an indication for applying a PDCCH monitoring behavior, it may be necessary to introduce a delay from the indication reception time point to the PDCCH monitoring behavior implementation time point. The delay may be determined based on an application condition. Different conditions may result in different delays. Specifically, the application condition may be associated with at least one of the following:

[0213] The DCI format of the DCI indicating the PDCCH monitoring behavior;

[0214] PDCCH monitoring behavior indication;

[0215] High-level signaling;

[0216] · Minimum applicable scheduling offset indication;

[0217] Minimum scheduling offset;

[0218] SCell sleep indication;

[0219] UE capabilities;

[0220] A timer; or

[0221] BWP instructions.

[0222] In one embodiment, the minimum applicable scheduling offset indication is used to indicate the minimum applicable K0 of an activated DLBWP and the lowest applicable K2 value of an activated UL BWP, if configured respectively.

[0223] In one embodiment, the minimum applicable scheduling offset may include the minimum applicable K0, the minimum applicable K2, and the minimum applicable CSI-RS triggering offset. The minimum applicable K0 is defined as the minimum time slot offset between the DCI and the PDSCH scheduled by it. The minimum applicable K2 is defined as the minimum time slot offset between the DCI and the PUSCH scheduled by it.

[0224] In one embodiment, a PDCCH transmission may carry a DCI indicating a PDCCH monitoring behavior. The DCI may schedule a PUSCH transmission or a PUCCH transmission at the same time. The DCI may also indicate a PDSCH transmission schedule. After the UE successfully receives the PDSCH transmission, the UE may send an acknowledgment (ACK) to the base station. The PDCCH monitoring behavior (e.g., PDCCH skip duration and / or SSSG switching) may be applied in the following manner:

[0225] The UE applies the indicated / triggered PDCCH monitoring behavior to the serving cell in the first time slot after the last OFDM symbol of PDCCH transmission;

[0226] The UE applies the indicated / triggered PDCCH monitoring behavior in X time slots after the last OFDM symbol of the ACK transmission, otherwise (i.e., not acknowledged (NACK)) the indication is not applied, where X is a positive integer less than 30;

[0227] · The UE applies the indicated / triggered PDCCH monitoring behavior to the serving cell in the Uth time slot after the last OFDM symbol of the PUSCH transmission. Where U is a positive integer less than 30. For example, Uth = first. For another example, U can be configured through RRC signaling. For another example, U can be reported by the UE. For another example, U can be a predefined value;

[0228] ·The UE applies the indicated / triggered PDCCH monitoring behavior to the serving cell in the first time slot after the last OFDM symbol of the PDCCH transmission. If the UE fails to decode the associated PDSCH and / or sends a NACK, the UE may perform the original PDCCH monitoring behavior (i.e., stop PDCCH monitoring skipping, or will not apply PDCCH monitoring skipping) in the first time slot after the last OFDM symbol of the NACK transmission;

[0229] The UE applies the indicated / triggered PDCCH monitoring behavior to the serving cell in the first slot after the last OFDM symbol of PDCCH transmission, and DL HARQ retransmissions during the skip duration are handled by the RTT / ReTx timer;

[0230] The UE applies the indicated / triggered PDCCH monitoring behavior to the serving cell in the first slot after the last OFDM symbol of PDCCH transmission, and UL HARQ retransmissions during the skip duration are handled by the RTT / ReTx timer;

[0231] After the application delay of the minimum scheduling offset limit, the UE applies the indicated / triggered PDCCH monitoring behavior on the serving cell;

[0232] · The UE applies the indicated / triggered PDCCH monitoring behavior to the serving cell in the first time slot after Pswitch. In one embodiment, Pswitch may represent the time associated with switching between transmit (Tx) and receive (Rx) operations. Pswitch may be predefined for each SCS.

[0233] In some embodiments, the application condition may include at least UE capability. In some embodiments, the UE capability may include UE processing capability. For example, if the UE capability is 1, if the DCI format is 1-1 or 1-2, the UE applies PDCCH monitoring behavior in the time slot after the ACK transmission associated with the DCI, or if the DCI format is 0-1 or 0-2, the UE applies PDCCH monitoring in the time slot after the PUSCH transmission. If the UE processing capability is 2, the UE applies PDCCH monitoring adjustment in the first time slot after the time slot in which the DCI is received.

[0234] In some embodiments, the application condition may include at least one of a DCI format or a minimum applicable scheduling offset indication. As previously described, the DCI may schedule a PUSCH transmission or a PUCCH transmission at the same time. The DCI may also indicate a PDSCH transmission schedule. After the UE receives the PDSCH transmission, the UE may send an acknowledgment (ACK) to the base station.

[0235] In one embodiment, the UE detects a scheduling DCI format 1-1 or 1-2 indicating a PDCCH monitoring behavior. If the PDSCH decoding / reception is successful, the UE may apply the indicated / triggered PDCCH monitoring behavior in X time slots after the last OFDM symbol of the ACK transmission, otherwise (for example, the decoding is unsuccessful and a NACK is sent) the indication is not applied. X is a positive integer. For example, X=1. For another example, X may be configured by RRC signaling. For another example, X may be reported by the UE. For another example, X may be a predefined value.

[0236] In one embodiment, if the UE detects a scheduling DCI format 0-1 or 0-2 indicating a PDCCH monitoring behavior, the PDCCH monitoring behavior (e.g., PDCCH skip duration and / or SSSG switching) may be applied in the following manner:

[0237] Option 1:

[0238] If the minimum applicable scheduling offset indication field is present in the DCI, the UE applies the indicated / triggered PDCCH monitoring behavior on the serving cell after the application delay of the minimum scheduling offset limit, otherwise (for example, the minimum applicable scheduling offset indication field is not present), the UE applies the indicated / triggered PDCCH monitoring behavior on the serving cell in the first time slot after the last OFDM symbol of the PDCCH transmission.

[0239] Option 2:

[0240] If the minimum applicable scheduling offset indication field indicates that the minimum scheduling offset has changed, the UE applies the indicated / triggered PDCCH monitoring behavior on the serving cell after the application delay limited by the minimum scheduling offset, otherwise (for example, the minimum scheduling offset has not changed), the UE applies the indicated / triggered PDCCH monitoring behavior on the serving cell in the first time slot after the last OFDM symbol of the PDCCH transmission. Option 3:

[0241] If the minimum applicable scheduling offset indication is present in the DCI, the UE applies the indicated / triggered PDCCH monitoring behavior on the serving cell after the application delay of the minimum scheduling offset limit, otherwise (for example, the minimum applicable scheduling offset indication does not exist), the UE applies the indicated / triggered PDCCH monitoring behavior on the serving cell at the Yth time slot / symbol after the last OFDM symbol of the PDCCH transmission. Y is a positive integer. For example, the Yth = the first. For another example, Y can be configured by RRC signaling. For another example, Y can be reported by the UE. For another example, Y can be a predefined value.

[0242] Option 4:

[0243] If the minimum applicable scheduling offset indication indicates that the minimum scheduling offset changes, the UE applies the indicated / triggered PDCCH monitoring behavior on the serving cell after the application delay of the minimum scheduling offset limit, otherwise (for example, the minimum scheduling offset does not change), the UE applies the indicated / triggered PDCCH monitoring behavior on the serving cell at the Yth time slot / symbol after the last OFDM symbol of the PDCCH transmission. y is a positive integer. For example, the Yth = the first. For another example, Y can be configured by RRC signaling. For another example, Y can be reported by the UE. For another example, Y is a predefined value.

[0244] In some embodiments, as described above, a PDCCH transmission may carry a DCI indicating a PDCCH monitoring behavior. The DCI may schedule a PUSCH transmission or a PUCCH transmission at the same time. The DCI may also indicate a PDSCH transmission schedule. After the UE receives the PDSCH transmission, the UE may send an acknowledgment (ACK) to the base station. The application conditions for applying the PDCCH monitoring behavior include at least one of a DCI format of the DCI, a high-layer signaling, or a PDCCH monitoring behavior indication.

[0245] The UE may determine the PDCCH skip duration or SSSG ID according to the PDCCH monitoring behavior indication and the higher layer signaling configuring the PDCCH skip duration list and / or the SSSG ID list.

[0246] For example, if the indicated PDCCH skip duration is less than a threshold, the UE may apply the indicated / triggered PDCCH monitoring behavior to the serving cell at the first slot / symbol after the last OFDM symbol of the PDCCH transmission, which carries the DCI indicating the PDCCH monitoring behavior. Otherwise, the UE applies the indicated / triggered PDCCH monitoring behavior to the serving cell in the first slot after the last OFDM symbol of the ACK transmission.

[0247] In some embodiments, the application conditions for applying the PDCCH monitoring behavior include at least one of a DCI format of the DCI, an application delay of a minimum scheduling offset, or K2.

[0248] For example, the UE detects a scheduling DCI format 1-1 or 1-2 indicating a PDCCH monitoring behavior. If the UE sends an ACK for a PDSCH scheduled by the DCI, the UE applies the indicated / triggered PDCCH monitoring behavior in X time slots after the last OFDM symbol of the ACK transmission, otherwise (e.g., NACK) the indication is not applied. X is a positive integer. For example, X=1. For another example, X can be configured by RRC signaling. For another example, X can be reported by the UE. For another example, X can be a predefined value.

[0249] For another example, when the UE detects a scheduling DCI in the format of 0-1 or 0-2 indicating a PDCCH monitoring behavior, the UE may apply the indicated / triggered PDCCH monitoring behavior to the serving cell after a first value, and if there is a minimum applicable scheduling offset indication in the DCI, the first value is calculated by a mathematical operation (e.g., a minimum operation: a minimum applicable scheduling offset limit (e.g., K2), an application delay of the minimum applicable scheduling offset limit), otherwise (e.g., the minimum applicable scheduling offset indication does not exist), the UE may apply the indicated / triggered PDCCH monitoring behavior to the serving cell in the first time slot after the PUSCH transmission. The mathematical operation may include: selecting a maximum value, selecting a minimum value, or adding.

[0250] In some embodiments, the DCI indicating the PDCCH monitoring behavior adaptation may also include an SCell sleep indication, and the indicated PDCCH monitoring behavior will be applied to all serving cells in CA mode. After completing the switch to a non-sleeping BWP for each Scell, the UE will apply the indicated / triggered PDCCH monitoring behavior, where each Scell ​​is instructed to do so. For each Scell ​​that does not need to perform BWP switching, the UE will apply the indicated / triggered PDCCH monitoring behavior in the Xth time slot after the PDCCH transmission. X is a positive integer.

[0251] In some embodiments, if SSSG #2 is configured, the SSSG switch timer is configured.

[0252] In some embodiments, a SSSG switch timer is configured and associated with SSSG #2.

[0253] In some embodiments, a prerequisite for supporting the triggering of the PDCCH monitoring behavior based on the SSSG timer is that the UE supports configuration with 3 SSSGs.

[0254] In some embodiments, if searchSpaceGroupIdList is configured, it is not expected that the UE is configured with a second SSSG list or PDCCH skip duration list for the second process. In some embodiments, if the search space group switching feature is used, it is not expected that the UE is configured with a second SSSG list or PDCCH skip duration list for the second process.

[0255] In some embodiments, if the PDCCH monitoring behavior changes, the UE may apply the indicated / triggered PDCCH monitoring behavior after applying a delay.

[0256] The above description and accompanying drawings provide specific example embodiments and implementations. However, the described subject matter may be embodied in a variety of different forms, and therefore, the subject matter covered or claimed is intended to be interpreted as not being limited to any exemplary embodiment set forth herein. It is intended to provide a reasonably broad scope for the subject matter claimed or covered. Among them, for example, the subject matter may be embodied as a method, device, component, system, or non-transient computer-readable medium for storing computer code. Therefore, the embodiment may, for example, take the form of hardware, software, firmware, storage medium, or any combination thereof. For example, the above method embodiment may be implemented by a component, device, or system including a memory and a processor by executing a computer code stored in a memory.

[0257] Throughout the specification and claims, in addition to the meanings explicitly stated, terms may have slightly different meanings that are suggested or implied by the context. Likewise, the phrase "in one embodiment / implementation" as used herein does not necessarily refer to the same embodiment, and the phrase "in another embodiment / implementation" as used herein does not necessarily refer to a different embodiment. For example, it is intended that the claimed subject matter includes all or part of the combination of the example embodiments.

[0258] In general, terms can be understood at least in part from usage in context. For example, terms used herein, such as "and", "or" or "and / or", can include multiple meanings that depend at least in part on the context in which the terms are used. Typically, "or", if used in connection with a list, such as A, B, or C, is intended to represent A, B, and C used herein in an inclusive sense, and A, B, or C used herein in an exclusive sense. In addition, the term "one or more" as used herein, depending at least in part on the context, can be used to describe any feature, structure, or characteristic in a singular sense, or can be used to describe a combination of features, structures, or characteristics in a plural sense. Similarly, terms such as "a", "an", or "the" can be understood to convey singular usage or to convey plural usage, depending at least in part on the context. In addition, the term "based on" can be understood to not necessarily be intended to convey a set of exclusive factors, but can allow the presence of additional factors that are not necessarily explicitly described, again depending at least in part on the context.

[0259] References to features, advantages, or similar language throughout the specification do not imply that all features and advantages that may be achieved with the present solution should or are included in any single embodiment thereof. Rather, language referring to features and advantages is understood to mean that a particular feature, advantage, or characteristic described in connection with an embodiment is included in at least one embodiment of the present solution. Thus, discussion of features and advantages and similar language throughout the specification may, but do not necessarily, refer to the same embodiment.

[0260] In addition, the features, advantages, and characteristics of the present solution may be combined in any suitable manner in one or more embodiments. Based on the description herein, one of ordinary skill in the relevant art will recognize that the present solution may be practiced without one or more of the specific features or advantages of a particular embodiment. In other cases, additional features and advantages may be recognized in certain embodiments that may not be present in all embodiments of the present solution.

Claims

1. A method performed by a user equipment UE in a wireless network, comprising: receiving a configuration message from a wireless communication node in the wireless network, the configuration message including configuration information associated with a physical downlink control channel (PDCCH) monitoring behavior set; receiving a control message from the wireless communication node, the control message indicating a PDCCH monitoring behavior in the PDCCH monitoring behavior set; as well as determining a PDCCH monitoring behavior based on the control message, wherein the control message indicates a PDCCH monitoring behavior in the PDCCH monitoring behavior set via a field in the control message; The method further comprises determining the bit width of the field; The control message is received from a first serving cell in a serving cell group, and the method further comprises: Applying a first PDCCH monitoring behavior in the first serving cell according to the field; and Applying a second PDCCH monitoring behavior in a second serving cell in the serving cell group according to the field; Wherein, applying the second PDCCH monitoring behavior in the second serving cell in the serving cell group according to the field includes: In response to the bit width of the field being greater than a target bit width required to indicate the PDCCH monitoring behavior of the second serving cell: obtaining a target field by truncating the field to the target bit width, and applying the second PDCCH monitoring behavior in the second serving cell according to the target field; In response to the bit width of the field being less than the target bit width required to indicate the PDCCH monitoring behavior of the second service cell: pre-adding or appending 0 to the field to obtain a target field having the target bit width, and applying the second PDCCH monitoring behavior in the second service cell according to the target field.

2. The method according to claim 1, wherein: The control message includes a downlink control information (DCI) message or a timer.

3. The method according to claim 1, wherein: The configuration message comprises a Radio Resource Control (RRC) message.

4. The method according to claim 1, wherein: The PDCCH monitoring behavior set includes at least one of the following: at least one list of PDCCH monitoring skip durations; and At least one list of search space set groups SSSG.

5. The method according to claim 4, wherein: Each list of PDCCH monitoring skip durations from the at least one list of PDCCH monitoring skip durations is associated with an SSSG in the at least one list of SSSGs.

6. The method according to claim 5, wherein: At least one list of SSSGs is associated with at least one of a bandwidth part BWP, a serving cell, or a serving cell group; as well as Each of the lists of PDCCH monitoring skipping durations has the same number of PDCCH monitoring skipping durations.

7. The method according to claim 4, wherein: The PDCCH monitoring behavior is applied to one of the following: All service cells in the service cell group; BWP; all downlink (DL) BWPs in a BWP group configured in the UE; All DL BWPs configured in the UE; All non-dormant DL BWPs in the serving cell group; All non-dormant DL BWPs configured in the UE; or All activated DL BWPs configured in the serving cell group.

8. The method according to claim 7, wherein: In response to the control message indicating the SSSG ID, the PDCCH monitoring behavior is applied to one of the following: all serving cells in the serving cell group; All activated DL BWPs configured in the serving cell group; or All DL BWPs configured in the UE; as well as In response to the control message indicating a PDCCH monitoring skip duration, the PDCCH monitoring behavior is applied to a BWP indicated by the control message.

9. The method according to claim 7, wherein: The PDCCH monitoring behavior applies to all activated DL BWPs configured in the serving cell group. Each of the activated DL BWPs is associated with at least one of the following: a target list of PDCCH monitoring skip durations from at least one list of PDCCH monitoring skip durations; or a target list of the SSSG from at least one list of the SSSG; Each of the target lists of PDCCH monitoring skip durations has the same number of PDCCH monitoring skip durations; as well as Each of the target lists of SSSGs has the same number of SSSGs.

10. The method according to claim 7, wherein: The PDCCH monitoring behavior is applied to all activated DL BWPs configured in the serving cell group; Each of the activated DL BWPs is associated with at least one of: a target list of PDCCH monitoring skip durations from at least one list of PDCCH monitoring skip durations; or a target list of the SSSG from at least one list of the SSSG; as well as Each of the activated DL BWPs is associated with the same number of PDCCH monitoring behaviors, which is the sum of the number of PDCCH monitoring skip durations in the target list of PDCCH monitoring skip durations and the number of SSSGs in the target list of SSSGs.

11. The method according to claim 1, wherein: Determining the PDCCH monitoring behavior based on the control message includes: The PDCCH monitoring behavior is determined based on a field in the control message and a bit width of the field.

12. The method of claim 1, wherein: The PDCCH monitoring behavior set is configured in a BWP, a BWP group or a serving cell group; The PDCCH monitoring behavior set does not include at least one list of PDCCH monitoring skip durations; as well as Determining the bit width of the field includes determining the bit width of the field based on one of: a number of SSSGs in a target list of SSSGs from at least one list of SSSGs, the target list of SSSGs having the largest number of SSSGs in all lists of at least one list of SSSGs; High-level signaling; The number of SSSGs in the BWP, the BWP group or the serving cell group; The maximum SSSG ID number among the SSSGs in the BWP, the BWP group, or the serving cell group; The number of SSSGs in a predefined BWP; or The maximum SSSG ID number among the SSSGs in the predefined BWP.

13. The method of claim 1, wherein: The PDCCH monitoring behavior set is configured in a BWP, a BWP group or a serving cell group; The PDCCH monitoring behavior set does not include at least one list of SSSGs; At least one list of PDCCH monitoring skip durations is associated with one of: a list of SSSGs, a BWP, a group of BWPs, or a group of serving cells; and Determining the bit width of the field includes determining the bit width of the field based on one of: the number of PDCCH listen skip durations in the target list of PDCCH listen skip durations from the at least one list of PDCCH listen skip durations, the PDCCH listen skip duration target list having the largest number of PDCCH listen skip durations among all lists of the at least one list of PDCCH listen skip durations; Higher layer signalling; or The number of PDCCH monitoring skip durations configured in the predefined BWP.

14. The method according to claim 12 or claim 13, wherein: The predefined BWP is determined by the following items: RRC signaling; Default BWP; or The BWP with the lowest index in the BWP group.

15. The method according to claim 1, wherein: The field indicates one of the following PDCCH monitoring behaviors: Switch to the target SSSG indicated by the field; skipping PDCCH monitoring for a PDCCH monitoring skip duration indicated by the field, the PDCCH monitoring skip duration being in a target list of PDCCH monitoring skip durations from at least one list of PDCCH monitoring skip durations, and the target list of PDCCH monitoring skip durations being associated with the activated SSSG; or Determines whether the value of the field is preserved.

16. The method according to claim 1, wherein: Obtaining a target field by truncating the field to a target bit width comprises: The field is truncated from the most significant bit (MSB) or the least significant bit (LSB) of the field to obtain the target field.

17. The method according to claim 1, wherein: The bit width of the field is not equal to the target bit width required to indicate the PDCCH monitoring behavior of the second serving cell, and applying the second PDCCH monitoring behavior in the second serving cell according to the field includes: In response to configuring the first PDCCH monitoring behavior in the second serving cell, applying the first PDCCH monitoring behavior in the second serving cell.

18. The method of claim 1, further comprising: The PDCCH monitoring behavior is applied.

19. The method according to claim 18, wherein: Applying the PDCCH monitoring behavior includes: Determining a time point for applying the PDCCH monitoring behavior; and The PDCCH monitoring behavior is applied in a next time slot or a next symbol immediately after the time point.

20. The method according to claim 19, wherein: The time point includes one of the following: A time slot for receiving the control message; receiving a last symbol of the control message; The nth time slot or symbol after indicating or triggering the PDCCH monitoring behavior, where n is a positive integer; The last time slot when the SSSG switching timer times out; The last symbol of the SSSG switching timer timeout; The last symbol of the ACK transmission associated with the control message; the last DL timeslot overlapping with the PUSCH transmission associated with the control message; The mth time slot after the last DL time slot overlapping with the PUSCH transmission associated with the control message, m being a positive integer; the last DL time slot overlapping with an ACK transmission associated with the control message; The lth time slot after the last DL time slot overlapping with the ACK transmission associated with the control message, l being a positive integer; or the last symbol of a physical uplink shared channel PUSCH transmission scheduled by the control message; or The last time slot of the PDCCH monitoring skip duration currently being applied by the UE.

21. The method according to claim 20, wherein: The time point is represented by a time slot or a symbol, the time slot or the symbol is based on a subcarrier spacing SCS, and the SCS is determined based on at least one of the following: SCS configuration of the PDCCH carrying the control message; SCS configuration for ACK transmission; an SCS configuration of a PUSCH scheduled by the control message; The SCS configuration of the downlink DL BWP in which the PDCCH monitoring behavior is to be applied; The smallest SCS configuration among all DL BWPs in which PDCCH monitoring behavior adaptation is to be applied; The SCS configuration of the lowest index DL BWP in which PDCCH monitoring behavior adaptation is to be applied; High-level configuration; or UE capabilities.

22. The method according to claim 18, wherein: Applying the PDCCH monitoring behavior includes at least one of the following: Applying the PDCCH monitoring behavior in the mth time slot after the last DL time slot overlapping with the PUSCH transmission associated with the control message, m is a positive integer; Applying the PDCCH monitoring behavior in a next DL time slot immediately following the PUSCH transmission associated with the control message, the next DL time slot immediately following is associated with a BWP in which the PDCCH monitoring behavior is to be applied; Applying the PDCCH monitoring behavior in an nth time slot after the last DL time slot overlapping with an ACK transmission associated with the control message, where n is a positive integer; or The PDCCH monitoring behavior is applied in a next DL time slot immediately following the ACK transmission to which the control message is associated, the next DL time slot immediately being associated with a BWP in which the PDCCH monitoring behavior adaptation is to be applied.

23. A method performed by a wireless communication node in a wireless network, comprising: Sending a configuration message to a UE in the wireless network, the configuration message including configuration information associated with a physical downlink control channel (PDCCH) monitoring behavior set; as well as Sending a control message to a UE in the wireless network, the control message indicating a PDCCH monitoring behavior in the PDCCH monitoring behavior set, wherein the control message triggers the UE to determine the PDCCH monitoring behavior based on the control message, and the control message indicates the PDCCH monitoring behavior in the PDCCH monitoring behavior set via a field in the control message; The bit width of the field is determined, the control message is sent via a first serving cell in a serving cell group, the control message triggers the UE to apply a first PDCCH monitoring behavior in the first serving cell according to the field; and the control message triggers the UE to apply a second PDCCH monitoring behavior in a second serving cell in the serving cell group according to the field, In response to the bit width of the field being greater than a target bit width required to indicate the PDCCH monitoring behavior of the second serving cell: the target field is obtained by truncating the field to the target bit width, and the second PDCCH monitoring behavior is applied in the second serving cell according to the target field; In response to the bit width of the field being less than the target bit width required to indicate the PDCCH monitoring behavior of the second service cell: the field is pre-added or appended with 0 to obtain a target field having the target bit width, and the second PDCCH monitoring behavior is applied in the second service cell according to the target field.

24. The method according to claim 23, wherein: The control message includes a downlink control information (DCI) message or a timer.

25. The method according to claim 23, wherein: The configuration message comprises a Radio Resource Control (RRC) message.

26. The method of claim 23, wherein: The PDCCH monitoring behavior set includes at least one of the following: at least one list of PDCCH monitoring skip durations; and At least one list of search space set groups SSSG.

27. The method according to claim 26, wherein: Each list of PDCCH monitoring skip durations from the at least one list of PDCCH monitoring skip durations is associated with an SSSG in at least one of the SSSGs.

28. The method of claim 27, wherein: At least one list of SSSGs is associated with at least one of a bandwidth part BWP, a serving cell, or a serving cell group; and Each of the lists of PDCCH monitoring skipping durations has the same number of PDCCH monitoring skipping durations.

29. The method according to claim 26, wherein the PDCCH monitoring behavior is applied to one of the following: All serving cells in the serving cell group associated with the UE; a BWP configured in the UE; All downlink DL BWPs in the BWP group configured in the UE All DL BWPs configured in the UE All non-dormant DL BWPs in the serving cell group All non-dormant DL BWPs configured in the UE; or All activated DL BWPs configured in the serving cell group.

30. The method of claim 29, wherein: In response to the control message indicating the SSSG ID, the PDCCH monitoring behavior is applied to one of the following: all serving cells in the serving cell group; All activated DL BWPs configured in the serving cell group; or All DL BWPs configured in the UE; as well as In response to a control message indicating a PDCCH monitoring skip duration, the PDCCH monitoring behavior is applied to a BWP indicated by the control message.

31. The method of claim 29, wherein: The PDCCH monitoring behavior applies to all activated DL BWPs configured in the serving cell group. Each of the activated DL BWPs is associated with at least one of the following: a target list of PDCCH monitoring skip durations from at least one list of PDCCH monitoring skip durations; or a target list of the SSSG from at least one list of the SSSG; Each of the target lists of PDCCH monitoring skip durations has the same number of PDCCH monitoring skip durations; as well as Each of the target lists of SSSGs has the same number of SSSGs.

32. The method of claim 29, wherein: The PDCCH monitoring behavior applies to all activated DL BWPs configured in the serving cell group. Each of the activated DL BWPs is associated with at least one of: a target list of PDCCH monitoring skip durations from at least one list of PDCCH monitoring skip durations; or a target list of the SSSG from at least one list of the SSSG; as well as Each of the activated DL BWPs is associated with the same number of PDCCH monitoring behaviors, which is the sum of the number of PDCCH monitoring skip durations in the target list of PDCCH monitoring skip durations and the number of SSSGs in the target list of SSSGs.

33. The method of claim 23, wherein: Determining the PDCCH monitoring behavior based on the control message includes: The PDCCH monitoring behavior is determined based on a field in the control message and a bit width of the field.

34. The method of claim 23, wherein: The PDCCH monitoring behavior set is configured in a BWP associated with the UE, a BWP group associated with the UE, or a serving cell group associated with the UE; The PDCCH monitoring behavior set does not include at least one list of PDCCH monitoring skip durations; as well as Determining the bit width of the field includes determining the bit width of the field based on one of the following: a number of SSSGs in a target list of SSSGs from at least one list of SSSGs, the target list of SSSGs having a maximum number of SSSGs in all lists of at least one list of SSSGs; High-level signaling; The number of SSSGs in the BWP, the BWP group, or the serving cell group The maximum SSSG ID number among the SSSGs in the BWP, the BWP group, or the serving cell group; The number of SSSGs in a predefined BWP; or The maximum SSSG ID number among the SSSGs in the predefined BWP.

35. The method of claim 23, wherein: The PDCCH monitoring behavior set is configured in a BWP associated with the UE, a BWP group associated with the UE, or a serving cell group associated with the UE; The PDCCH monitoring behavior set does not include at least one list of SSSGs; At least one list of PDCCH monitoring skip durations is associated with one of: a SSSG list, a BWP, a BWP group, or a serving cell group; and Determining the bit width of the field includes determining the bit width of the field based on one of: the number of PDCCH listen skip durations in the target list of PDCCH listen skip durations from the at least one list of PDCCH listen skip durations, the PDCCH listen skip duration target list having the largest number of PDCCH listen skip durations among all lists of the at least one list of PDCCH listen skip durations; Higher layer signalling; or The number of PDCCH monitoring skip durations configured in the predefined BWP.

36. A method according to claim 34 or claim 35, wherein: The predefined BWP is determined by the following items: RRC signaling; Default BWP; or The BWP with the lowest index in the BWP group.

37. The method of claim 23, wherein: The field indicates one of the following PDCCH monitoring behaviors: Switch to the target SSSG indicated by the field; skipping PDCCH monitoring for a PDCCH monitoring skip duration indicated by the field, the PDCCH monitoring skip duration being in a target list of PDCCH monitoring skip durations from at least one list of PDCCH monitoring skip durations, and the target list of PDCCH monitoring skip durations being associated with the activated SSSG; or Determines whether the value of the field is preserved.

38. A device for wireless communication, comprising a memory for storing computer instructions and a processor in communication with the memory, wherein: When the processor executes the computer instructions, the processor is configured to implement the method according to any one of claims 1-37.

39. A computer program product comprising a non-transitory computer readable program medium having computer code stored thereon, which, when executed by one or more processors, causes the one or more processors to implement the method according to any one of claims 1-37.

Images