Adaptation of communication parameters of user equipment

Abstract

The present disclosure relates to a communication method and system for integrating a fifth generation (5G) communication system, which is used to support a higher data rate than a fourth generation (4G) system with Internet of Things (IoT) technology. The present disclosure can be applied to intelligent services based on 5G communication technology and IoT-related technologies, such as smart homes, smart buildings, smart cities, smart cars, connected cars, health care, digital education, smart retail, security and safety services. A UE includes a transceiver configured to receive an adaptive request (AR) in a PDCCH via a DCI format. The UE also includes a processor configured to: configure the transceiver to operate in a first state associated with the reception of a first DCI format in a first search space set in response to an AR reception result, and to operate in a second state associated with the reception of a second DCI format in a second search space set. A BS includes a transceiver configured to transmit an AR in a PDCCH via a DCI format. The BS includes a processor configured to configure a transceiver to operate in a first state associated with transmission of a first DCI format in a first search space set and in a second state associated with transmission of a second DCI format in a second search space set.

Description

Technical Field

[0001] The present disclosure relates generally to communication systems, and in particular, to adapting parameters to communications between a user equipment (UE) and a base station. Background Art

[0002] Since the deployment of 4G communication systems, in order to meet the demand for increased wireless data services, efforts have been made to develop improved 5G or quasi-5G communication systems. Therefore, 5G or quasi-5G communication systems are also referred to as "super 4G networks" or "post-LTE systems". 5G communication systems are considered to be implemented in higher frequency (millimeter wave) bands (e.g., 60GHz bands) to achieve higher data rates. In order to reduce the propagation loss of radio waves and increase the transmission distance, beamforming, large-scale multiple input multiple output (MIMO), full-dimensional MIMO (FD-MIMO), array antennas, analog beamforming, and large antenna technology are discussed in 5G communication systems. In addition, in 5G communication systems, development of system network improvements is being carried out based on advanced small cells, cloud radio access networks (RAN), ultra-dense networks, device-to-device (D2D) communications, wireless backhaul, mobile networks, collaborative communications, coordinated multipoint (CoMP), receiving end interference elimination, etc. In 5G systems, hybrid FSK with QAM modulation (FQAM) and sliding window superposition coding (SWSC) have been developed as advanced coded modulation (ACM), as well as filter bank multi-carrier (FBMC), non-orthogonal multiple access (NOMA) and sparse code multiple access (SCMA) as advanced access technologies.

[0003] The Internet is a human-centered connectivity network in which humans generate and consume information, and it is now evolving into the Internet of Things (IoT), in which distributed entities (such as objects) exchange and process information without human intervention. The Internet of Everything (IoE) has emerged, which is a combination of IoT technology and big data processing technology through connection with cloud servers. Since IoT implementation requires technical elements such as "sensing technology", "wired / wireless communication and network infrastructure", "service interface technology" and "security technology", sensor networks, machine-to-machine (M2M) communication, machine type communication (MTC), etc. have been studied recently. Such IoT environments can provide smart Internet technology services that create new value for human life by collecting and analyzing data generated among networked objects. IoT can be applied to a variety of fields, including smart homes, smart buildings, smart cities, smart cars or connected cars, smart grids, health care, smart appliances, and advanced medical services through the integration and combination between existing information technology (IT) and various industrial applications.

[0004] In line with this, various attempts have been made to apply 5G communication systems to IoT networks. For example, technologies such as sensor networks, machine type communications (MTC), and machine-to-machine (M2M) communications can be implemented through beamforming, MIMO, and array antennas. The application of cloud radio access networks (RANs), such as the big data processing technologies described above, can also be considered as an example of the convergence between 5G technologies and IoT technologies. Summary of the invention

[0005] Technical issues

[0006] Since the deployment of the fourth generation (4G) communication system, in order to meet the demand for increased wireless data services, efforts have been made to develop improved fifth generation (5G) or quasi-5G communication systems. Therefore, 5G or quasi-5G communication systems are also referred to as "super 4G networks" or "post-LTE systems". Compared with 4G communication systems, 5G communication systems can be implemented in higher frequency (millimeter wave) bands (e.g., 60GHz bands) to achieve higher data rates. In order to reduce the propagation loss of radio waves and increase the transmission distance, beamforming, large-scale multiple input multiple output (MIMO), full-dimensional MIMO (FD-MIMO), array antennas, analog beamforming and large antenna technology are considered in 5G communication systems. In addition, in 5G communication systems, development of system network improvements is being carried out based on advanced small cells, cloud radio access networks (RAN), ultra-dense networks, device-to-device (D2D) communications, wireless backhaul, mobile networks, collaborative communications, coordinated multipoint (CoMP), receiving end interference elimination, etc. In 5G systems, hybrid FSK with QAM modulation (FQAM) and sliding window superposition coding (SWSC) have been developed as advanced coded modulation (ACM), as well as filter bank multi-carrier (FBMC), non-orthogonal multiple access (NOMA) and sparse code multiple access (SCMA) as advanced access technologies.

[0007] In order to reduce UE power consumption in a wireless communication system, it is necessary to design an adaptation process for UE operation and enable the UE to transmit an adaptation request to a serving base station (gNB), or enable the gNB to transmit an adaptation request to the UE, which can be facilitated by auxiliary information from the UE. It is also necessary to specify a UE adaptation scheme for UE power consumption characteristics in the frequency domain, time domain and antenna domain, in the DRX configuration and in the UE processing timeline. It is also necessary to design a downlink physical layer signal / channel to signal the adaptation of parameters in UE operation from the gNB to the UE. It is also necessary to design an uplink physical layer signal / channel to signal the adaptation request for the parameters in UE operation to the gNB by the UE. It is also necessary to specify parameters, which include auxiliary information transmitted by the UE to the gNB, so that the gNB can determine the adaptation of parameters in UE operation.

[0008] Solution to the problem

[0009] In one embodiment, a UE includes a transceiver configured to receive an adaptation request (AR) in a physical downlink control channel (PDCCH) via a downlink control information (DCI) format. The UE also includes a processor operably connected to the transceiver. The processor is configured to: configure the transceiver to operate in a first state associated with reception of a first DCI format in a first search space set in response to an AR reception result, and configure the transceiver to operate in a second state associated with reception of a second DCI format in a second search space set.

[0010] In another embodiment, a base station (BS) includes a transceiver configured to transmit an adaptation request (AR) in a physical downlink control channel (PDCCH) via a downlink control information (DCI) format. The BS also includes a processor operably connected to the transceiver. The processor is configured to: configure the transceiver to operate in a first state associated with transmission of a first DCI format in a first search space set depending on the AR transmission, and configure the transceiver to operate in a second state associated with transmission of a second DCI format in a second search space set.

[0011] In another embodiment, a method for configuring a receiver for a UE is provided. The method includes: receiving an adaptation request (AR) in a physical downlink control channel (PDCCH) via a downlink control information (DCI) format, and configuring the receiver to operate in a first state associated with reception of a first DCI format in a first search space set in response to an AR reception result, and configuring the receiver to operate in a second state associated with reception of a second DCI format in a second search space set.

[0012] Those skilled in the art can easily understand other technical features from the following drawings, descriptions and claims.

[0013] Before the following detailed description, it may be advantageous to set forth the definitions of certain words and phrases used throughout this patent document. The term "connection" and its derivatives refer to any direct or indirect communication between two or more elements, whether or not these elements are in physical contact with each other. The terms "transmit", "receive" and "communication" and their derivatives cover both direct and indirect communication. The terms "include" and "include" and their derivatives mean including but not limited to. The term "or" is inclusive, meaning and / or. The phrase "associated with..." and its derivatives mean including, included in, interconnected with, included in, included in, connected to, or connected with, connected to, or connected with, can communicate with, cooperate with, interlace, juxtapose, be adjacent to, be combined with, or combine with, have, have characteristics, have a relationship with, etc. The term "controller" means any device, system, or part thereof that controls at least one operation. Such a controller can be implemented in hardware or a combination of hardware and software and / or firmware. The functionality associated with any particular controller can be centralized or distributed, whether local or remote. The phrase "at least one of" when used with a list of items means that different combinations of one or more of the listed items may be used, and only one item in the list may be required. For example, "at least one of A, B, and C" includes any of the following combinations: A, B, C; A and B, A and C, B and C; and A, B, and C.

[0014] In addition, the various functions described below can be implemented or supported by one or more computer programs, each of which is formed by a computer-readable program code and embodied in a computer-readable medium. The terms "application" and "program" refer to one or more computer programs, software components, instruction sets, processes, functions, objects, classes, instances, related data or a portion thereof that are suitable for implementation with a suitable computer-readable program code. The phrase "computer-readable program code" includes any type of computer code, including source code, object code and executable code. The phrase "computer-readable medium" includes any type of medium that can be accessed by a computer, such as a read-only memory (ROM), a random access memory (RAM), a hard drive, a compact disk (CD), a digital video disc (DVD) or any other type of memory. "Non-transitory" computer-readable media excludes wired, wireless, optical or other communication links that transmit temporary electrical signals or other signals. Non-transitory computer-readable media include media in which data can be permanently stored and media in which data can be stored and rewritten later, such as rewritable optical disks or erasable memory devices.

[0015] Definitions for additional specific words and phrases are provided throughout this patent document. Those of ordinary skill in the art should understand that in many, if not most instances, such definitions apply to prior, as well as future uses of such defined words and phrases.

[0016] Advantageous Effects of the Invention

[0017] The present disclosure relates to a quasi-5G or 5G communication system to be provided to support a higher data rate than a 4G communication system such as Long Term Evolution (LTE). BRIEF DESCRIPTION OF THE DRAWINGS

[0018] For a more complete understanding of the present disclosure and its advantages, reference is now made to the following description taken in conjunction with the accompanying drawings, in which like reference numerals represent like parts:

[0019] Figure 1 An example wireless network according to the present disclosure is shown;

[0020] Figure 2A and Figure 2B Example wireless transmit and receive paths according to the present disclosure are shown;

[0021] Figure 3A An example user device according to the present disclosure is shown;

[0022] Figure 3B An example enhanced NodeB (gNB) according to the present disclosure is shown;

[0023] Figure 4A An exemplary encoding process for a DCI format according to the present disclosure is shown;

[0024] Figure 4B An exemplary decoding process for a DCI format according to the present disclosure is shown;

[0025] Figure 5 An example of a UE process for adaptation of the transmit or receive state based on explicit AR according to one embodiment of the present disclosure is shown;

[0026] Figure 6 An example of a UE procedure for UE adaptation based on an implicit adaptation request of the UE according to one embodiment of the present disclosure is shown;

[0027] Figure 7 An example of a UE adaptation process according to one embodiment of the present disclosure is shown, wherein a periodic AR is transmitted from the UE;

[0028] Figure 8 An example of a UE adaptation process according to one embodiment of the present disclosure is shown, wherein an aperiodic AR is transmitted from the UE;

[0029] Fig. 9 An example of a UE procedure for adaptation of a power saving state / mode based on an adaptation request from a gNB according to one embodiment of the present disclosure is shown;

[0030] Fig.10 An example of a UE procedure for applying an AR transmitted from a gNB to a UE according to one embodiment of the present disclosure is shown;

[0031] Fig.11 A timeline for transmission / reception of AR between gNB / UE utilizing periodic UE assistance information reporting according to one embodiment of the present disclosure is shown.

[0032] Fig.12 A timeline showing transmission / reception of an adaptation request between gNB / UE with triggered UE assistance information reporting according to one embodiment of the present disclosure;

[0033] Fig.13A and Fig. 13B An example of a UE procedure for UE-assisted adaptation to C-DRX operation according to an embodiment of the present disclosure is shown;

[0034] Fig.14 An example of a UE procedure for UE-assisted adaptation of PDCCH monitoring according to one embodiment of the present disclosure is shown;

[0035] Fig.15 An example of a UE procedure for UE-assisted adaptation of cross-slot scheduling of data reception / transmission according to one embodiment of the present disclosure is shown;

[0036] Fig.16 An example of UE adaptation for minimum scheduling delay for data reception / transmission according to one embodiment of the present disclosure is shown;

[0037] Fig.17 An example of joint adaptation of minimum scheduling delay for data reception / transmission and minimum PDCCH monitoring periodicity according to one embodiment of the present disclosure is shown;

[0038] Fig.18 An example of joint adaptation of minimum scheduling delay for data reception and minimum slot offset for aperiodic CSI-RS measurement according to one embodiment of the present disclosure is shown;

[0039] Fig.19 An example of a UE adaptation process for minimum processing delay of one or more processing timeline related adaptation entities according to one embodiment of the present disclosure is shown;

[0040] Fig. 20An example of a UE procedure for joint adaptation of DL / UL BWP switching and maximum MIMO layers or maximum TX / RX antenna ports according to one embodiment of the present disclosure is shown;

[0041] Fig.21 An example of a UE procedure for activation (deactivation) of an antenna port according to one embodiment of the present disclosure is shown;

[0042] Fig. 22 An example of a UE procedure for adaptation of the minimum CCE aggregation level to be monitored according to one embodiment of the present disclosure is shown;

[0043] Fig.23 An example of one measurement opportunity with a SMTC window duration of 4 ms and two target cells for SS / PBCH block based measurement in an asynchronous network according to one embodiment of the present disclosure is shown;

[0044] Fig.24 An example of measurement duration of cell group #1 according to one embodiment of the present disclosure is shown;

[0045] Fig.25 An example process of SS / PBCH block-based measurement in an associated SMTC window when the first method in this embodiment is enabled according to one embodiment of the present disclosure is shown;

[0046] Fig.26 The UE process when the second method in this embodiment is enabled according to one embodiment of the present disclosure is shown;

[0047] Fig. 27 An example of CSI-RS resources from different target cells with random time offsets at the slot level and symbol level according to one embodiment of the present disclosure is shown;

[0048] Fig.28 An exemplary processing procedure at the UE when the first method in the second embodiment of the present disclosure is enabled is shown;

[0049] Fig.29 The processing process at the UE when the second method in the second embodiment is enabled according to one embodiment of the present disclosure is shown;

[0050] Fig.30 An exemplary process at a UE for enabling scaled mobility measurement defined in a third embodiment of the present disclosure is shown;

[0051] Fig.31 An exemplary processing procedure at a UE according to the first method according to the fourth embodiment of the present disclosure is shown; and

[0052] Fig.32 A flowchart of an example method for operating a UE according to an embodiment of the present disclosure is shown. DETAILED DESCRIPTION

[0053] The following discussion in this patent document Figures 1 to 32 The various embodiments used to describe the principles of the present disclosure are for illustration only and should not be interpreted in any way as limiting the scope of the present disclosure. Those skilled in the art will appreciate that the principles of the present disclosure can be implemented in any appropriately arranged wireless communication system.

[0054] The present disclosure relates to designing an adaptation process for UE operation to enable signaling of adaptation requests from the UE to a serving base station (gNB) and from the gNB to the UE (which may be based on auxiliary information from the UE). The present disclosure also relates to enabling an adaptation scheme in UE operation to support adaptation to UE operating characteristics in the frequency, time and antenna domains, in discontinuous reception (DRX) configurations, and in processing timelines. The present disclosure further relates to designing downlink (DL) physical layer signals / channels so that the gNB signals to the UE information that enables the UE to adapt parameters of the UE operation. The present disclosure further relates to designing uplink (UL) physical layer signals / channels so that the UE transmits an adaptation request to the gNB. The present disclosure further relates to specifying auxiliary information that the UE is to transmit to the gNB to assist the gNB in ​​determining adaptation of parameters of the UE operation.

[0055] The present disclosure also relates to improving the design of UE's mobility measurement based on synchronization signal / physical broadcast channel (SS / PBCH) blocks, and for asynchronous networks, improving the design of UE's mobility measurement based on CSI-RS. The present disclosure also relates to reducing RRM measurement overhead by utilizing changes in UE mobility state or channel conditions. The present disclosure further relates to optimizing UE's mobility measurement in radio resource control (RRC)_CONNNECTED state (C-DRX) in discontinuous reception (DRX) operation, beyond reference signal (RS) resources with greater flexibility in both time and frequency domains.

[0056] Figure 1 An example wireless network 100 according to the present disclosure is shown. Figure 1 The embodiment of the wireless network 100 shown in FIG. 1 is for illustration only. Other embodiments of the wireless network 100 may be used without departing from the scope of the present disclosure.

[0057] Wireless network 100 includes gNodeB (gNB) 101, gNB 102, and gNB 103. gNB 101 communicates with gNB 102 and gNB 103. gNB 101 also communicates with at least one Internet Protocol (IP) network 130, such as the Internet, a dedicated IP network, or other data network.

[0058] Depending on the network type, other well-known terms may be used instead of "gNodeB" or "gNB", such as "base station" or "access point". For convenience, the terms "gNodeB" and "gNB" are used in this patent document to refer to network infrastructure components that provide wireless access to remote terminals. In addition, depending on the network type, other well-known terms may be used instead of "user equipment" or "UE", such as "mobile station", "subscriber station", "remote terminal", "wireless terminal" or "user device". For convenience, the terms "user equipment" and "UE" are used in this patent document to refer to a remote wireless device that wirelessly accesses a gNB. A UE can be a mobile device (such as a mobile phone or smart phone) or a device that is generally considered to be a fixed device (such as a desktop computer or a vending machine).

[0059] gNB 102 provides wireless broadband access to network 130 for a first plurality of user equipment (UE) located within coverage area 120 of gNB 102. The first plurality of UEs include: UE 111, which may be located in a small business (SB); UE 112, which may be located in an enterprise (E); UE 113, which may be located in a WiFi hotspot (HS); UE 114, which may be located in a first residence (R); UE 115, which may be located in a second residence (R); and UE 116, which may be a mobile device (M), such as a cellular phone, a wireless laptop, a wireless PDA, etc. gNB 103 provides wireless broadband access to network 130 for a second plurality of UEs located within coverage area 125 of gNB 103. The second plurality of UEs includes UE 115 and UE 116. In some embodiments, one or more of gNBs 101 to 103 may communicate with each other and with UEs 111 to 116 using 5G, Long Term Evolution (LTE), LTE-A, WiMAX, WiFi, or other advanced wireless communication technologies.

[0060] Dashed lines illustrate the approximate extents of coverage areas 120 and 125, which are shown as generally circular for purposes of illustration and explanation only. It should be clearly understood that coverage areas associated with a gNB, such as coverage areas 120 and 125, may have other shapes, including irregular shapes, depending on the configuration of the gNB and variations in the radio environment associated with natural and man-made obstacles.

[0061] As described in more detail below, one or more of BS 101, BS 102, and BS 103 include a 2D antenna array as described in an embodiment of the present disclosure. In some embodiments, one or more of BS 101, BS 102, and BS 103 supports codebook design and structure for a system with a 2D antenna array.

[0062] although Figure 1 An example of a wireless network 100 is shown, but may be Figure 1 Various changes may be made. For example, wireless network 100 may include any number of gNBs and any number of UEs in any suitable arrangement. In addition, gNB 101 may communicate directly with any number of UEs and provide those UEs with wireless broadband access to network 130. Similarly, each of gNBs 102 to 103 may communicate directly with network 130 and provide UEs with direct wireless broadband access to network 130. In addition, gNBs 101, 102, and / or 103 may provide access to other or additional external networks, such as an external telephone network or other type of data network.

[0063] Figure 2A and Figure 2B An example wireless transmit path and receive path according to the present disclosure are shown. In the following description, transmit path 200 may be described as being implemented in a gNB (such as, gNB 102), and receive path 250 may be described as being implemented in a UE (such as, UE 116). However, it will be understood that receive path 250 may be implemented in a gNB and transmit path 200 may be implemented in a UE. In some embodiments, receive path 250 is configured to support codebook design and structure for a system with a 2D antenna array, as described in embodiments of the present disclosure.

[0064] The transmit path 200 includes a channel coding and modulation block 205, a serial to parallel (S to P) block 210, a size N inverse fast Fourier transform (IFFT) block 215, a parallel to serial (P to S) block 220, an add cyclic prefix block 225, and an up converter (UC) 230. The receive path 250 includes a down converter (DC) 255, a remove cyclic prefix block 260, a serial to parallel (S to P) block 265, a size N fast Fourier transform (FFT) block 270, a parallel to serial (P to S) block 275, and a channel decoding and demodulation block 280.

[0065] In the transmit path 200, the channel coding and modulation block 205 receives a set of information bits, applies coding (such as low density parity check (LDPC) coding), and modulates the input bits (such as with quadrature phase shift keying (QPSK) or quadrature amplitude modulation (QAM)) to generate a frequency domain modulation symbol sequence. The serial to parallel block 210 converts (such as demultiplexes) the serially modulated symbols into parallel data to generate N parallel symbol streams, where N is the IFFT / FFT size used in the gNB 102 and UE 116. The size N IFFT block 215 performs an IFFT operation on the N parallel symbol streams to generate a time domain output signal. The parallel to serial block 220 converts (such as multiplexes) the parallel time domain output symbols from the size N IFFT block 215 to generate a serial time domain signal. The add cyclic prefix block 225 inserts a cyclic prefix into the time domain signal. Upconverter 230 modulates (eg, upconverts) the output of add cyclic prefix block 225 to RF frequency for transmission via a wireless channel. The signal may also be filtered at baseband prior to conversion to RF frequency.

[0066] The RF signal transmitted from gNB 102 arrives at UE 116 after passing through the wireless channel, and the reverse operation of the operation at gNB 102 is performed at UE 116. Downconverter 255 downconverts the received signal to baseband frequency, and remove cyclic prefix block 260 removes the cyclic prefix to generate a serial time-domain baseband signal. Serial to parallel block 265 converts the time-domain baseband signal into parallel time-domain signals. Size N FFT block 270 performs an FFT algorithm to generate N parallel frequency-domain signals. Parallel to serial block 275 converts the parallel frequency-domain signals into a modulated sequence of data symbols. Channel decoding and demodulation block 280 demodulates and decodes the modulated symbols to recover the original input data stream.

[0067] Each of gNBs 101-103 may implement a transmit path 200 similar to that for transmitting in the downlink to UEs 111-116 and may implement a receive path 250 similar to that for receiving in the uplink from UEs 111-116. Similarly, each of UEs 111-116 may implement a transmit path 200 for transmitting in the uplink to gNBs 101-103 and may implement a receive path 250 for receiving in the downlink from gNBs 101-103.

[0068] Can be implemented using hardware only or a combination of hardware and software / firmware Figure 2A and Figure 2B As a specific example, Figure 2A and 2BAt least some of the components in can be implemented in software, while other components can be implemented by configurable hardware or a mixture of software and configurable hardware. For example, FFT block 270 and IFFT block 215 can be implemented as a configurable software algorithm, wherein the value of size N can be modified according to the implementation.

[0069] In addition, although described as using FFT and IFFT, this is only by way of illustration and should not be construed as limiting the scope of the present disclosure. Other types of transforms may be used, such as discrete Fourier transform (DFT) and inverse discrete Fourier transform (IDFT) functions. It should be understood that the value of the variable N may be any integer (such as 1, 2, 3, 4, etc.) for the DFT and IDFT functions, and the value of the variable N may be any integer (such as 1, 2, 4, 8, 16, etc.) as a power of two for the FFT and IFFT functions.

[0070] although Figure 2A and Figure 2B An example of a wireless transmission path and a receiving path is shown, but the Figure 2A and Figure 2B Make various changes. For example, Figure 2A and Figure 2B The various components in the can be combined, further subdivided or omitted, and additional components can be added according to specific needs. Figure 2A and Figure 2B It is intended to illustrate examples of the types of transmit paths and receive paths that may be used in a wireless network. Any other suitable architecture may be used to support wireless communications in a wireless network.

[0071] Figure 3A An example UE 116 according to the present disclosure is shown. Figure 3A The embodiment of UE 116 shown in FIG. 1 is for illustration only, and Figure 1 UEs 111 to 115 may have the same or similar configurations. However, UEs have a wide variety of configurations, and Figure 3A The scope of the present disclosure is not limited to any particular implementation of the UE.

[0072] UE 116 includes antenna 305, radio frequency (RF) transceiver 310, transmit (TX) processing circuit 315, microphone 320, and receive (RX) processing circuit 325. UE 116 also includes speaker 330, main processor 340, input / output (I / O) interface (IF) 345, keypad 350, display 355, and memory 360. Memory 360 includes basic operating system (OS) program 361 and one or more application programs 362.

[0073] RF transceiver 310 receives incoming RF signals transmitted by gNBs of network 100 from antenna 305. RF transceiver 310 downconverts the incoming RF signals to generate an intermediate frequency (IF) or baseband signal. The IF or baseband signal is sent to RX processing circuitry 325, which generates a processed baseband signal by filtering, decoding, and / or digitizing the baseband or IF signal. RX processing circuitry 325 transmits the processed baseband signal to speaker 330 (such as for voice data) or to host processor 340 for further processing (such as for web browsing data).

[0074] The TX processing circuit 315 receives analog or digital voice data from the microphone 320 or other outgoing baseband data (such as web data, email, or interactive video game data) from the main processor 340. The TX processing circuit 315 encodes, multiplexes, and / or digitizes the outgoing baseband data to generate a processed baseband or IF signal. The RF transceiver 310 receives the outgoing processed baseband or IF signal from the TX processing circuit 315 and up-converts the baseband or IF signal to an RF signal to be transmitted via the antenna 305.

[0075] The main processor 340 may include one or more processors or other processing devices and execute a basic OS program 361 stored in the memory 360 to control the overall operation of the UE 116. For example, the main processor 340 may control the reception of forward channel signals and the transmission of reverse channel signals through the RF transceiver 310, the RX processing circuit 325, and the TX processing circuit 315 according to well-known principles. In some embodiments, the main processor 340 includes at least one microprocessor or microcontroller.

[0076] The main processor 340 is also capable of executing other processes and programs resident in the memory 360, such as operations for channel quality measurement and reporting for a system having a 2D antenna array as described in an embodiment of the present disclosure, as described in an embodiment of the present disclosure. The main processor 340 can move data into or out of the memory 360 as needed for the execution process. In some embodiments, the main processor 340 is configured to execute an application 362 based on an OS program 361 or in response to a signal received from a gNB or operator. The main processor 340 is also coupled to an I / O interface 345, which provides the UE 116 with the ability to connect to other devices, such as laptops and handheld computers. The I / O interface 345 is the communication path between these accessories and the main controller 340.

[0077] Main processor 340 is also coupled to keypad 350 and display unit 355. An operator of UE 116 may use keypad 350 to enter data into UE 116. Display 355 may be a liquid crystal display or other display capable of presenting text and / or at least limited graphics (such as from a website).

[0078] Memory 360 is coupled to main processor 340. A portion of memory 360 may include random access memory (RAM), and another portion of memory 360 may include flash memory or other read-only memory (ROM).

[0079] although Figure 3A An example of UE 116 is shown, but the Figure 3A Make various changes. For example, Figure 3A The various components in the embodiment may be combined, further subdivided, or omitted, and additional components may be added as required. As a specific example, the main processor 340 may be divided into multiple processors, such as one or more central processing units (CPUs) and one or more graphics processing units (GPUs). Figure 3A The UE 116 is shown configured as a mobile phone or smart phone, but the UE may be configured to operate as other types of mobile or stationary devices.

[0080] Figure 3B An example gNB 102 according to the present disclosure is shown. Figure 3B The embodiment of the gNB 102 shown in FIG. is for illustration only, and Figure 1 Other gNBs may have the same or similar configuration. However, gNBs have a wide variety of configurations, and Figure 3B The scope of the present disclosure is not limited to any particular implementation of the gNB. It should be noted that gNB 101 and gNB 103 may include the same or similar structure as gNB 102.

[0081] like Figure 3B As shown in FIG. 1 , gNB 102 includes multiple antennas 370a to 370n, multiple RF transceivers 372a to 372n, transmit (TX) processing circuitry 374, and receive (RX) processing circuitry 376. In some embodiments, one or more of the multiple antennas 370a to 370n include a 2D antenna array. gNB 102 also includes a controller / processor 378, a memory 380, and a backhaul or network interface 382.

[0082] The RF transceivers 372a to 372n receive incoming RF signals from the antennas 370a to 370n, such as signals transmitted by a UE or other gNB. The RF transceivers 372a to 372n downconvert the incoming RF signals to generate IF or baseband signals. The IF or baseband signals are sent to the RX processing circuit 376, which generates processed baseband signals by filtering, decoding and / or digitizing the baseband or IF signals. The RX processing circuit 376 transmits the processed baseband signals to the controller / processor 378 for further processing.

[0083] TX processing circuitry 374 receives analog or digital data (such as voice data, web data, email, or interactive video game data) from controller / processor 378. TX processing circuitry 374 encodes, multiplexes, and / or digitizes the outgoing baseband data to generate processed baseband or IF signals. RF transceivers 372a to 372n receive the outgoing processed baseband or IF signals from TX processing circuitry 374 and up-convert the baseband or IF signals into RF signals that are transmitted via antennas 370a to 370n.

[0084] The controller / processor 378 may include one or more processors or other processing devices that control the overall operation of the gNB 102. For example, the controller / processor 378 may control the reception of forward channel signals and the transmission of reverse channel signals through the RF transceivers 372a to 372n, the RX processing circuit 376, and the TX processing circuit 374 in accordance with well-known principles. The controller / processor 378 may also support additional functionality, such as more advanced wireless communication functionality. For example, the controller / processor 378 may perform a blind interference sensing (BIS) process, such as performed by a BIS algorithm, and decode a received signal minus an interference signal. The controller / processor 378 in the gNB 102 may support any of a wide variety of other functions. In some embodiments, the controller / processor 378 includes at least one microprocessor or microcontroller.

[0085] The controller / processor 378 is also capable of executing programs and other processes resident in the memory 380, such as a basic OS. The controller / processor 378 is also capable of supporting channel quality measurement and reporting for systems with 2D antenna arrays, as described in embodiments of the present disclosure. In some embodiments, the controller / processor 378 supports communications between entities such as web RTC. The controller / processor 378 can move data into or out of the memory 380 as needed by the executing process.

[0086] The controller / processor 378 is also connected to a backhaul or network interface 382. The backhaul or network interface 382 allows the gNB 102 to communicate with other devices or systems via a backhaul connection or via a network. The interface 382 can support communication over any suitable wired or wireless connection. For example, when the gNB 102 is implemented as part of a cellular communication system (such as a cellular communication system that supports 5G, LTE, or LTE-A), the interface 382 can allow the gNB 102 to communicate with other gNBs via a wired or wireless backhaul connection. When the gNB 102 is implemented as an access point, the interface 382 can allow the gNB 102 to communicate via a wired or wireless local area network or via a wired or wireless connection to a larger network (such as the Internet). The interface 382 includes any suitable structure that supports communication via a wired or wireless connection, such as an Ethernet or RF transceiver.

[0087] Memory 380 is coupled to controller / processor 378. A portion of memory 380 may include RAM, and another portion of memory 380 may include flash memory or other ROM. In some embodiments, a plurality of instructions (such as a BIS algorithm) are stored in the memory. The plurality of instructions are configured to cause controller / processor 378 to perform a BIS process and decode a received signal after subtracting at least one interference signal determined by the BIS algorithm.

[0088] As described in more detail below, the transmit path and receive path of gNB 102 (implemented using RF transceivers 372a to 372n, TX processing circuitry 374, and / or RX processing circuitry 376) support aggregated communications with FDD cells and TDD cells.

[0089] although Figure 3B An example of a gNB 102 is shown, but the Figure 3B For example, gNB 102 may include Figure 3B 374 and RX processing circuitry 376, gNB 102 may include multiple instances of each (e.g., one instance per RF transceiver).

[0090] The UE is typically configured by the gNB to monitor multiple locations for corresponding candidate PDCCH reception to decode one or more DCI formats. The DCI format includes a cyclic redundancy check (CRC) bit so that the UE confirms the correct detection of the DCI format. The DCI format type is identified by the radio network temporary identifier (RNTI) scrambled on the CRC bits. For a DCI format that schedules a PDSCH or PUSCH to a single UE, the RNTI may be a cell RNTI (C-RNTI) and serves as a UE identifier. For a DCI format that schedules a PDSCH that conveys system information (SI), the RNTI may be an SI-RNTI. For a DCI format that schedules a PDSCH that provides a random access response (RAR), the RNTI may be an RA-RNTI. For a DCI format that provides a transmit power control (TPC) command to a group of UEs, the RNTI may be a TPC-RNTI. Each RNTI type may be configured to the UE via higher layer signaling (such as, RRC signaling). A DCI format that schedules PDSCH reception of a UE is also referred to as a DL DCI format or a DL assignment, and a DCI format that schedules PUSCH transmission of a UE is also referred to as a UL DCI format or a UL grant.

[0091] The PDCCH transmission may be within a set of PRBs. The gNB may configure one or more PRB sets, also referred to as control resource sets (CORESETs), for the UE for PDCCH reception. The PDCCH transmission may be in control channel elements (CCEs) of the CORESETs. The UE may determine the CCEs for PDCCH reception based on a search space set. A set of CCEs that may be used for PDCCH reception by the UE defines the PDCCH candidate locations.

[0092] Figure 4A An exemplary encoding process for a DCI format according to the present disclosure is shown. Figure 4A The embodiments shown in the drawings are for illustration only. Other embodiments may be used without departing from the scope of the present disclosure.

[0093] The gNB encodes and transmits each DCI format separately in the corresponding PDCCH. When applicable, the DCI format is intended to mask the CRC of the DCI format codeword for the RNTI of the UE so that the UE can identify the DCI format. For example, the CRC may include 16 bits or 24 bits, and the RNTI may include 16 bits or 24 bits. Otherwise, when the RNTI is not included in the DCI format, the DCI format type indicator field may be included in the DCI format. A CRC calculation unit 412 is used to determine the CRC of the (non-encoded) DCI format information bits 410, and an exclusive OR (XOR) operation unit 413 is used to mask the CRC between the CRC bits and the RNTI bits 414. The XOR operation is defined as XOR (0, 0) = 0, XOR (0, 1) = 1, XOR (1, 0) = 1, XOR (1, 1) = 0. The masked CRC bits are appended to the DCI format information bits using a CRC append unit 415. The encoder 416 performs channel coding such as tail biting convolutional coding or polar coding, followed by rate matching to the allocated resources by the rate matcher 417. The interleaving and modulation unit 418 applies interleaving and modulation, such as QPSK, and transmits an output control signal 419.

[0094] Figure 4B An exemplary decoding process for a DCI format according to the present disclosure is shown. Figure 4B The embodiments shown in the drawings are for illustration only. Other embodiments may be used without departing from the scope of the present disclosure.

[0095] The received control signal 420 is demodulated and deinterleaved by a demodulator and deinterleaver 422. The rate matching applied at the transmitter is recovered by a rate matcher 423, and the resulting bits are decoded by a decoder 424. After decoding, a CRC extractor 425 extracts the CRC bits and provides DCI format information bits 426. The DCI format information bits are demasked 427 by an XOR operation with the RNTI 428 (when applicable), and a CRC check 429 is performed on a per-unit basis. When the CRC check succeeds (the checksum is zero), the DCI format information bits are considered valid (at least when the corresponding information is valid). When the CRC check fails, the DCI format information bits are considered invalid.

[0096] For each DL bandwidth part (BWP) configured to the UE in the serving cell, a certain number of CORESETs may be provided to the UE via higher layer signaling. For each CORESET, the UE is provided with: CORESET index p; DM-RS scrambling sequence initialization value; precoder granularity of a certain number of REGs in frequency, where the UE may assume the same DM-RS precoder is used; a certain number of consecutive symbols; a set of resource blocks; CCE to REG mapping parameters; antenna port quasi-colocation from a set of antenna port quasi-colocations, used to indicate quasi-colocation information of DM-RS antenna ports for PDCCH reception; and / or for DCI format 1_1 transmitted by PDCCH in CORESET p, an indication of the presence or absence of the Transmission Configuration Indication (TCI) field;

[0097] For each DL BWP configured to a UE in a serving cell, a certain number of search space sets are provided to the UE by higher layers, wherein for each search space set from the certain number of search space sets, the following is provided to the UE: search space set index s; association between search space set s and CORESET p; k s The PDCCH monitoring periodicity and o s PDCCH monitoring offset for each time slot; PDCCH monitoring mode within a time slot, indicating the first symbol of the control resource set within the time slot used for PDCCH monitoring; PDCCH candidate per CCE aggregation level L ; an indication of whether the search space set s is a common search space set or a UE-specific search space set; and / or a T indicating the number of time slots in which the search space set s exists s (Wherein, T s <k s ) time slot duration.

[0098] For the search space set s associated with CORESET p, the search space set s corresponding to the carrier indicator field value n C1 The serving cell (also called search space), time slot PDCCH candidates in the search space set The corresponding CCE index for aggregation level L is given in Equation 1A:

[0099]

[0100] Where: For any common search space,

[0101] For UE-specific search space, Y p，-1 =n RNTI≠0, for pmod3=0, A p =39827; for pmod3 = 1, A p =39829; for pmod3 = 2, A p =39839, and D = 65537;

[0102] i=O, ..., L-1;

[0103] N CCE，p is the number of CCEs in CORESET p, numbered from 0 to N CCE，p -1;

[0104] n CI is the carrier indicator field value (if the UE is configured with a carrier indicator field); otherwise, including for any common search space, n CI =0;

[0105] in The UE is configured to monitor the search space set s and the C1 The number of PDCCH candidates of aggregation level L of the corresponding serving cell;

[0106] For any common search space,

[0107] For UE-specific search space, is the total number of configured n CCE aggregation levels L of the search space set s in the control resource set p C1 Value The maximum value of

[0108] RNTI value for n RNT1 .

[0109] PUCCH can be transmitted according to one or more PUCCH formats. The PUCCH format corresponds to a structure designed for a specific UCI payload range, because different UCI payloads require different PUCCH transmission structures to improve the associated UCI BLER. PUCCH transmission is also associated with a TCI state that provides a spatial domain filter for PUCCH transmission. PUCCH can be used to convey HARQ-ACK information, SR or periodic / semi-persistent CSI and their combinations.

[0110] The UE can be configured to operate with multiple bandwidth parts (BWPs) in the DL system BW (DL BWP) and the UL system BW (UL BWP). At a given time, only one DL BWP and only one UL BWP are active for the UE. Configuration of various parameters, such as search space set configuration for PDCCH reception or PUCCH resources for PUCCH transmission, can be provided separately for each corresponding BWP. The main purpose of BWP operation is to achieve power saving of the UE. When the UE is to transmit or receive data, a large BWP can be used, and, for example, the search space set can be more than one and have a short monitoring periodicity. When the UE has no data to be transmitted or received, a small BWP can be used, and, for example, a single search space set can be configured with a longer monitoring periodicity.

[0111] From the perspective of UE power saving, it is preferred that the UE turns on its RF and baseband functions to receive and transmit control and data information as needed based on service requirements (such as data rate / latency), link characteristics (such as coverage / channel conditions), and UE status (such as load / mobility / battery). Compared with the gNB, the UE is more aware of the real-time changes in channel conditions, mobility status, and service patterns, especially in the RRC_CONNECTED state.

[0112] Example 1. UE Adaptation Process

[0113] A first embodiment of the present disclosure contemplates a UE adaptation procedure for implementing a signaling adaptation request (AR) from the UE or from a serving gNB, the AR indicating adaptation to different power consumption aspects or configuration parameters for the UE to communicate with the gNB.

[0114] Embodiment 1-A. Adaptation request from UE

[0115] In one method of the UE adaptation process, an adaptation request (AR) may be transmitted from the UE to the serving gNB. The response of the gNB may be explicit or implicit. For an implicit AR response, when the UE does not receive any response from the gNB within a predetermined time period after the UE transmits the AR, the UE may assume that the AR is rejected / accepted by the gNB. Alternatively, the AR from the UE is used by the gNB to assist the gNB in ​​determining subsequent adaptation of the UE operation, and no explicit response is required. For an explicit AR response, the gNB may transmit one of the following to the UE: In one example, the gNB may transmit an acknowledgement (ACK) or a negative acknowledgement (NACK) indicating acceptance or rejection of the AR from the UE, respectively; in another example, the gNB may transmit a new or improved AR to the UE to indicate the adaptation parameters of the UE operation. Alternatively, when the UE does not receive any response from the gNB within a predetermined time period after the UE transmits the AR, the UE may assume that the AR is rejected / accepted by default.

[0116] The explicit AR from the UE may indicate a request to adapt one or more parameters for transmission to or reception from the gNB. For example, the explicit AR may indicate a subset of a set of CCE ALs for monitoring the PDCCH, such as an AL of {1, 2} CCEs from a set of {1, 2, 4, 8, 16} CCEs. For example, the explicit AR may be a request to cause the UE to switch from a first state of a transmission or reception parameter to a second state, where the set of states of the transmission or reception parameter may be provided to the UE in advance, such as by higher layer signaling, or may be predefined in the specification of the system operation.

[0117] Figure 5 An example of an adaptive UE process based on the transmit or receive state of explicit AR according to one embodiment of the present disclosure is shown. Figure 5 The embodiments shown in the drawings are for illustration only. Other embodiments may be used without departing from the scope of the present disclosure.

[0118] In step 501, the configuration of one or more transmit or receive states / modes may be provided to the UE, for example, by higher layer signaling from the gNB. In step 502, the UE may transmit an explicit AR for switching the transmit or receive mode / state. For example, the AR may indicate switching the transmit or receive parameters from a normal state to a power saving mode / state. For another example, the AR may indicate switching the transmit or receive parameters from a power saving mode / state to a normal state / mode. In step 503, the UE then determines whether the UE receives a response from the gNB. When, in step 504, the UE receives an ACK from the gNB, the UE switches the transmit or receive parameters to the state / mode indicated by the AR and communicates 506 with the gNB according to the transmit or receive parameters indicated by the AR. When the UE receives a NACK 505 from the gNB, in step 507, the UE maintains the existing transmit or receive parameters. When the UE does not receive a response from the gNB within a configured time period, the UE may retransmit the AR 502.

[0119] The implicit AR from the UE may indicate a preferred adaptation of one or more transmit or receive parameters, for example related to power consumption aspects or configuration parameters. Instead of the UE indicating explicit parameters for adaptation, the UE provides an adaptation request for a first operating state. When the gNB receives the implicit AR from the UE, the gNB transmits an ACK / NACK or transmits an AR in response to accepting / rejecting the implicit AR from the UE to indicate the actual adaptation command (improved AR). In one example, the implicit AR from the UE may be a request to switch a mode / state of the transmit or receive parameters, where each mode / state may be configured in advance by the gNB through higher layer signaling (e.g., RRC signaling) or may be predefined in the specification of the system operation. The gNB may transmit an adaptation request to the UE, the adaptation request indicating activation / deactivation of one or more schemes associated with the requested state / mode for the transmit or receive parameters.

[0120] Figure 6 An example of a UE procedure for UE adaptation based on an implicit adaptation request of the UE according to an embodiment of the present disclosure is shown. Figure 6 The embodiments shown in the drawings are for illustration only. Other embodiments may be used without departing from the scope of the present disclosure.

[0121] In step 601, the configuration of one or more states / modes of transmit or receive parameters may be provided to the UE via higher layer signaling from the gNB, wherein each mode / state may be associated with one or more power saving schemes. In step 602, the UE may transmit an implicit AR to indicate a preferred mode / state. In step 603, the UE receives an AR from the gNB, wherein the AR may trigger the UE to adapt the transmit or receive parameters associated with the mode / state. In step 604, the UE performs adaptation of the corresponding transmit or receive parameters according to the AR received from the gNB. For example, the UE may switch / activate / deactivate the state of the transmit or receive parameters, or adapt the transmit or receive scheme.

[0122] Additional timelines for the UE adaptation process may be employed to avoid misunderstanding of the adaptation configuration between the gNB and the UE. The UE may be configured with any of the following timers.

[0123] PT0: Indicates how long the UE should wait for an Adaptation Request Response (AR-R) from the gNB after transmitting an AR to the gNB. When the UE does not receive an AR-R from the gNB before the PT0 timer expires, the UE may assume one of the following:

[0124] Case 1: gNB implicitly accepts AR without transmitting associated AR-R. When the UE does not receive an AR-R from the gNB before PT0 expires, the UE may perform adaptation of the transmit or receive parameters as indicated by the AR.

[0125] Case 2: The UE does not detect the AR-R because the gNB does not detect the associated AR or because the AR-R is not detected by the UE. In this case, the UE cannot perform adaptation and can retransmit the AR at the next transmission opportunity after PT0 expires. The UE can maintain the previous configuration or revert to the superset configuration to account for the case where the gNB transmits the AR-R but the UE fails to detect it.

[0126] Case 3: AR is auxiliary information used by the gNB to independently determine the adaptation of the UE's transmit or receive parameters, and no explicit response from the gNB is required. For example, the AR may indicate a preference for a minimum time difference between PDCCH reception with a DL DCI format and scheduled PDSCH reception.

[0127] PT1: Indicates how long the UE should wait before applying adaptation to transmit or receive parameters after receiving an AR-R from the gNB.

[0128] The UE may determine any of PT0 / PT1 by one of the following: In one example, any of PT0 / PT1 may be predefined in the specification of the system operation. For example, PT0=10ms or 3ms, PT1=0ms or 1ms. In another example, any of PT0 / PT1 may be provided by higher layer signaling. In yet another example, any of PT0 / PT1 may be reported by the UE to the gNB as part of the UE capabilities.

[0129] The UE may transmit AR to the gNB in ​​a periodic or aperiodic manner.

[0130] For periodic AR from the UE, the UE may be configured with periodic PUCCH / PUSCH resources to transmit periodic AR to the gNB. The periodic AR may be consistent with periodic / semi-persistent CSI reporting with the same or different periodicity as the AR, and then the UE may combine the AR and CSI reports in the same PUCCH resource. The UE may prioritize the transmission of AR over the transmission of CSI reports when the number of available REs in the PUCCH resource (excluding those used for DMRS transmission by the UE) is insufficient to achieve the target coding rate for the control information in the corresponding PUCCH transmission.

[0131] Figure 7 An example of a UE adaptation process according to one embodiment of the present disclosure is shown, where the UE transmits a periodic AR. Figure 7 The embodiments shown in the drawings are for illustration only. Other embodiments may be used without departing from the scope of the present disclosure.

[0132] In step 701, a periodic PUCCH / PUSCH resource configuration for transmitting an AR to a serving cell / gNB is provided to the UE. In step 702, the UE transmits an AR to the gNB in ​​the PUCCH / PUSCH. When the UE receives an ACK in response to the AR from the gNB in ​​step 703, the UE performs adaptation of the transmit or receive parameters as indicated by the AR in step 704. When the UE receives a NACK in response to the AR from the gNB in ​​step 705, the UE maintains the current configuration of the transmit or receive parameters and does not perform any adaptation in step 706. When the UE receives an AR from the gNB indicating an improved adaptation request in step 707, the UE performs adaptation of the transmit or receive parameters as indicated by the AR received from the gNB in ​​step 708.

[0133] Figure 8 An example of a UE adaptation process according to one embodiment of the present disclosure is shown, where the UE transmits aperiodic AR. Figure 8 The embodiments shown in the drawings are for illustration only. Other embodiments may be used without departing from the scope of the present disclosure.

[0134] For non-periodic AR from the UE, the UE may transmit AR to the gNB on demand. In step 801, the UE sends an AR indicator AR-I to the gNB to request the transmission of AR. The physical layer resources (such as PUCCH resources) used for AR-I transmission may be the same as those used for SR transmission. The UE may use one value (such as binary "0") to indicate AR-I and another value (such as binary "1") to indicate SR for the transmitted information. In this way, AR-I may be treated as a special SR state and reported together with other SR states when the corresponding reporting instances overlap. When the gNB receives the AR request, the gNB may schedule PUCCH / PUSCH so that the UE reports the AR information. In step 802, the UE then receives a UL DCI format (UL grant) in PUSCH or PUCCH that schedules the AR transmission. In step 803, the UE transmits AR in PUSCH / PUCCH. In step 804, the UE determines whether the UE receives AR-R from the gNB. When the UE receives an ACK from the gNB in ​​response to the AR (in step 805), the UE performs adaptation of the transmission or reception parameters as indicated by the AR (in step 808). When the UE receives a NACK from the gNB in ​​response to the AR (in step 806), the UE does not perform any adaptation of the transmission or reception parameters (in step 809). When the UE receives an AR from the gNB indicating an improved adaptation request (in step 807), the UE performs adaptation as indicated by the received AR transmitted from the gNB (in step 810). Otherwise, when the UE does not receive a response from the gNB within a predetermined or configured time, the UE may retransmit the AR indicator to trigger another round of aperiodic AR 801.

[0135] Embodiment 1-B. Adaptive Request from gNB Utilizing Assistance Information from UE

[0136] In another method of the UE adaptation process of transmitting or receiving parameters, the AR can be transmitted from the serving cell or gNB to the UE. The AR from the gNB can be transmitted based on some auxiliary information transmitted from the UE or based on some statistical data such as communication with the UE obtained by the gNB. The AR transmitted from the gNB to the UE can be transmitted in the PDCCH via the DCI format for fast adaptation, or in the PDSCH in the MAC control element (CE). For the latter case, the UE can also determine whether the AR is received correctly (by performing a CRC check on the reception of the associated transport block). For example, the UE can use PUCCH format 0 or 1 to provide an acknowledgement of AR reception via a MAC CE, where a binary "1" value can represent a positive acknowledgement (ACK) and a binary "0" value can represent a negative acknowledgement (NACK) or no reception.

[0137] Fig. 9 An example of an adaptive UE process for operating state / mode based on an adaptation request from a gNB according to an embodiment of the present disclosure is shown. Fig. 9 The embodiments shown in the drawings are for illustration only. Other embodiments may be used without departing from the scope of the present disclosure.

[0138] In step 901, the configuration of one or more states / modes of the transmit or receive parameters may be provided to the UE, for example, by higher layer signaling from the gNB, where each mode / state may be associated with, for example, one or more power saving schemes. In step 902, the UE receives an AR from the gNB indicating to update / switch the current state / mode. In step 903, the UE switches the state / mode of the transmit or receive parameters as indicated by the received AR.

[0139] Additional timelines for the UE adaptation process may be adopted to avoid misunderstandings of the adaptive system configuration. An application delay PT2 may be provided to the UE, which determines the period of time that the UE should wait before applying the AR received from the gNB. The UE may determine PT2 (in units of one time slot or one millisecond) by one of the following examples. In one example, PT2 may be defined in the specification of the system operation. For example, PT2=1ms or PT2=1 time slot. In another example, PT2 may be provided by higher layer signaling. In yet another example, PT2 may be reported by the UE to the gNB as part of the UE capability. In this case, multiple values ​​of PT2 may be predefined in the specification of the system operation for different UE capabilities. In yet another example, PT2 may be associated with a PDCCH monitoring periodicity. For example, PT2=c1*min{ks), where ks is the PDCCH monitoring periodicity of the configured search space s, and c1 may be predefined in the specification of the system operation, such as c1=1, or provided to the UE by higher layer signaling. For another example, PT2=c1*min{ks_min), where ks_min is the minimum PDCCH monitoring periodicity among all affected search space sets, and c1 may be predefined in the specification of system operation, such as c1=1, or provided to the UE through higher layer signaling.

[0140] Fig.10 An example of a UE process for applying an AR transmitted from a gNB to a UE according to an embodiment of the present disclosure is shown. Fig.10 The embodiments shown in the drawings are for illustration only. Other embodiments may be used without departing from the scope of the present disclosure.

[0141] In step 1001, a configuration is provided to the UE for receiving an AR from the gNB and a corresponding application delay PT2 of the AR. The AR may be included in a DCI format provided by the PDCCH. In step 1002, the UE then determines whether the UE has received the AR from the gNB. When the UE receives the AR at time n_AR, the UE obtains information of the transmit or receive parameters from the AR. In step 1003, the UE may apply the indicated adaptation after applying the delay PT2. The UE does not expect to receive the AR in the time slot n_AR. or The adaptation of the corresponding transmission or reception parameters indicated by AR is previously applied, where μ X is the subcarrier spacing (SCS) configuration of the scheduled PDSCH or PUSCH, and μ AR It is the SCS configuration of the received AR.

[0142] Fig.11A timeline for transmission / reception of AR between gNB / UE utilizing periodic UE assistance information reporting according to one embodiment of the present disclosure is shown. Fig.11 The embodiments shown in the drawings are for illustration only. Other embodiments may be used without departing from the scope of the present disclosure.

[0143] For non-periodic reporting of UE assistance information, the UE may be configured to report periodicity T1 and PUCCH / PUSCH resources for transmitting UE assistance information. Periodic reporting of UE assistance information may be consistent with periodic / semi-persistent CSI reporting with the same or different periodicity as the UE assistance information, and the UE may combine these two reports in the same PUCCH. When the number of available REs in the PUCCH resources (excluding UEs used for DMRS transmission) is insufficient to achieve the target coding rate for the control information in the corresponding PUCCH transmission, the UE may prioritize the transmission of the configuration report over the transmission of the CSI report.

[0144] Fig.12 A timeline for transmission / reception of an adaptive request between gNB / UE utilizing triggered UE assistance information reporting is shown according to one embodiment of the present disclosure. Fig.12 The embodiments shown in the drawings are for illustration only. Other embodiments may be used without departing from the scope of the present disclosure.

[0145] For triggered reporting of UE assistance information, the UE may include the report in a MAC CE that the UE transmits in the PUSCH. This also enables the UE to determine whether the report was received correctly (by performing a CRC check on the reception of the associated transport block). Reporting of UE assistance information may also be requested by the serving gNB, for example, through a field in a DCI format (such as DCI format 0_1 ​​or 1_1), similar to a CSI request.

[0146] Embodiment 2: UE adaptive solution

[0147] The second embodiment of the present disclosure considers a UE adaptation scheme to support UE adaptation of entities related to UE transmission or reception parameters or configurations in the frequency domain, time domain, and antenna domain, in DRX operation, and in the UE processing timeline. For the UE adaptation scheme, one or more adaptation entities and corresponding changes are indicated by an adaptation request (AR). The AR is transmitted from the gNB or from the UE. The AR may provide control / signaling information to trigger one or more UE adaptation schemes. The control signaling information in the AR for indicating the corresponding adaptation of the corresponding adaptation entity may be any one of the following examples.

[0148] In one example, for each entity, the control / signaling information for each of the corresponding adaptive entities may be included in the AR independently. In another example, for two or more entities, the control / signaling information for the corresponding adaptive entities may be included in the AR together. In this case, the control / signaling information may indicate a row index in a configured or predetermined common adaptive table. The columns of the adaptive table may be associated with one of the corresponding adaptive entities. Each row of the adaptive table indicates the corresponding adaptation of the transmission or reception parameters of the UE on the corresponding adaptive entity. The adaptive table may be predefined in the specification of the system operation or provided to the UE by higher layer signaling. For the latter case, the adaptive table may be configured by some RRC parameters, which may be decoded by the UE by means of CRC, or located in a SIB with CRC, where the CRC is scrambled by C-RNTI. In this embodiment, the corresponding adaptive entity may be any adaptive entity. In another example, for multiple corresponding adaptive entities, the control / signaling information may be common. In this case, the control signaling applies to multiple corresponding adaptive entities. The corresponding adaptive entity may be predefined in the specification of the system operation or provided to the UE by higher layer signaling.

[0149] Embodiment 2-A. Time Domain Radio Resources

[0150] The first sub-embodiment considers a UE adaptation scheme in the time domain. One or a combination of the following examples or methods for adaptation of the transmission or reception parameters of the UE in the time domain may be supported.

[0151] In the first method of the time domain UE adaptation scheme, the AR may trigger UE adaptation for discontinuous reception operation / configuration in the RRC_CONNECTED state (C-DRX). The AR may instruct adaptation of at least one of the following C-DRX related adaptation entities.

[0152] In one example, the C-DRX related adaptive entity may be the DRX cycle T_drx, which can be a long or short DRX cycle. In a sub-example, the AR may indicate to the UE to extend / reduce the DRX cycle to the next Nth larger / smaller candidate from a list of predefined or pre-configured candidate values, where N is predefined in the specification of the system operation, e.g., N = 1, or N is provided to the UE via higher layer signaling. In another sub-example, the AR may indicate dynamic scaling of the DRX cycle such that when 0 < c1 < 1, T_drx = max(T_drx * c1, T^min_drx); when c1 > 1, T_drx = min(T_drx * c1, T^max_drx). c1 is the scaling factor indicated by the AR, and T^min_drx and T^max_drx are the minimum and maximum values of T_drx respectively.

[0153] In another example, the C-DRX configuration parameter for adaptation may be the DRX ON duration, i.e., drx-onDurationTimer, denoted as T_on in this disclosure. In a sub-example, the AR may indicate to the UE to extend / reduce T_on to the next Nth larger / smaller candidate from a list of predefined or configured candidate values, where N is predefined in the specification of the system operation, e.g., N = 1, or N is provided to the UE via higher layer signaling. In another sub-example, the AR may indicate dynamic scaling of T_on such that when 0 < c2 < 1, T_on = max(T_on * c1, T^min_on); when c2 > 1, T_on = min(T_on * c1, T^max_on). c2 is the scaling factor indicated by the AR, and T^min_on and T^max_on are the minimum and maximum values of T_on respectively.

[0154] In yet another example, the C-DRX configuration parameter for adaptation may be drx-InactivityTimer, denoted as T_inact in this disclosure. In a sub-example, the AR may indicate to the UE to extend / reduce T_inact to the next Nth larger / smaller candidate from a list of predefined or configured candidate values, where N is predefined in the specification of the system operation, e.g., N = 1, or N is provided to the UE via higher layer signaling. In another sub-example, the AR may indicate dynamic scaling of T_inact such that when 0 < c3 < 1, T_inact = max(T_inact * c3, T^min_inact); when c3 > 1, T_inact = min(T_inact * c3, T^max_inact). c3 is the scaling factor indicated by the AR, and T^min_inact and T^max_inact are the minimum and maximum values of T_inact respectively.

[0155] The UE may determine any one of T^max_drx / T^max_on / T^max_inact / T^min_drx / T^min_on / T^min_inact by one of the following examples:

[0156] In one example, any one of T^max_drx / T^max_on / T^max_inact / T^min_drx / T^min_on / T^min_inact is fixed and defined in the specification of the system operation. In another example, any one of T^max_drx / T^max_on / T^max_inact / T^min_drx / T^min_on / T^min_inact is provided to the UE through higher layer signaling. In yet another example, any one of T^max_drx / T^max_on / T^max_inact / T^min_drx / T^min_on / T^min_inact is reported by the UE to the gNB.

[0157] Adaptation to C-DRX may be performed jointly with at least one of the following adaptation entities from other domains: In one example, the adaptation entity from another domain that adapts jointly with C-DRX may be an active DLBWP. For example, the AR may trigger the UE to switch C-DRX configuration together with the active DL BWP.

[0158] In another example, the adaptation entity from another domain that is jointly adapted with C-DRX may be the activation (deactivation) of the SCell. For example, the AR may trigger the UE to switch to a shorter DRX cycle with a smaller number of active CCs. In yet another example, the adaptation entity from another domain that is jointly adapted with C-DRX may be the PDCCH monitoring periodicity of at least a UE-specific search space set.

[0159] For adaptation associated with C-DRX, a set of adaptation candidates may be provided to the UE with respect to different traffic loads / UE power states / delay requirements / UE mobility states / link quality / channel conditions. The predetermined adaptation candidates may be defined in the specification of the operating system or provided to the UE via higher layer signaling. Each adaptation candidate may be associated with one or more adaptation entities / parameters related to C-DRX operation and / or other power consumption dimensions. The AR associated with C-DRX may indicate one or more adaptation candidates from a predetermined set of adaptation candidates.

[0160] Fig.13A An example of a UE procedure for UE-assisted adaptation to C-DRX operation according to one embodiment of the present disclosure is shown. Fig.13A The embodiments shown in the drawings are for illustration only. Other embodiments may be used without departing from the scope of the present disclosure.

[0161] like Fig.13A As shown, in step 1301, the UE transmits assistance information or AR for preferred values ​​of any C-DRX related adaptation entity or configuration parameter (such as T_drx / T_on / T_inact / T^max_drx / T^max_on / T^max_inact / T^min_drx / T^min_on / T^min). In step 1302, the UE receives an AR from the gNB for triggering adaptation of C-DRX operation, or an ACK from the gNB in ​​response to an AR transmission from the UE. In step 1303, the UE then performs adaptation for the corresponding adaptation entity related to C-DRX, as indicated by the AR from the gNB or as acknowledged by the gNB based on the AR transmitted from the UE.

[0162] Fig. 13B An example of a UE procedure for adaptation of C-DRX operation in conjunction with BWP switching according to one embodiment of the present disclosure is shown. Fig. 13B The embodiments shown in the drawings are for illustration only. Other embodiments may be used without departing from the scope of the present disclosure.

[0163] like Fig. 13B As shown, in step 1304, the C-DRX configuration per DL BWP is provided to the UE, for example, by higher layer signaling. In step 1305, the UE receives an AR for switching the active DL BWP. In step 1306, the UE then adapts to the C-DRX configuration associated with the target active DL BWP indicated by the received AR.

[0164] In a second method of UE adaptation in the time domain for transmission or reception parameters, the AR can trigger UE adaptation for PDCCH monitoring. The AR can indicate adaptation for at least one of the following PDCCH monitoring-related adaptation entities: In one example, the PDCCH monitoring-related adaptation entity can be the PDCCH monitoring period T_PDCCH. The AR can carry a scaling factor c1 to indicate dynamic scaling of T_PDCCH associated with one or more search space sets. In another example, the PDCCH monitoring-related adaptation entity can be the PDCCH monitoring duration D_PDCCH. The AR can carry a scaling factor c2 to indicate dynamic scaling of D_PDCCH associated with one or more search space sets. In yet another example, the PDCCH monitoring-related adaptation entity can be the PDCCH monitoring offset associated with one or more search space sets. In yet another example, the PDCCH monitoring-related adaptation entity can be the activation (deactivation) of a search space set. The AR can indicate the deactivation or activation of one or more search space sets. In yet another example, the PDCCH monitoring-related adaptation entity can be the number of consecutive OFDM symbols N^PDCCH_OS of a control resource set (CORESET) associated with one or more search space sets. The AR can carry a dynamic scaling factor c3 such that when 0 < c3 < 1, N^PDCCH_OS = max(N^PDCCH_OS * c3, 1); when c3 > 1, N^PDCCH_OS = min(N^PDCCH_OS * c3, 3).

[0165] PDCCH monitoring can be adaptively coordinated with one or a combination of the following entities from other operation dimensions: In one example, the entity from another operation dimension that is adaptively coordinated with PDCCH monitoring can be the bandwidth of the associated CORESET. For example, the AR can indicate a longer PDCCH monitoring period for the USS on a relatively larger CORESET bandwidth. In another example, the entity from another operation dimension that is adaptively coordinated with PDCCH monitoring can be the DL active BWP. For example, the AR can indicate a longer PDCCH monitoring period for the USS on a larger active BWP.

[0166] For the adaptation of PDCCH monitoring, a set of adaptation candidates can be provided to the UE with respect to different traffic loads / UE power states / delay requirements / UE mobility states / link quality / channel conditions. The predefined adaptation candidates can be defined in system operation or provided to the UE via higher layer signaling. Each adaptation candidate can be associated with one or more adaptation entities / parameters related to PDCCH monitoring and / or other operation dimensions. The AR associated with PDCCH monitoring can indicate one or more adaptation candidates from the predefined set of adaptation candidates.

[0167] Fig.14 An example of a UE procedure for UE-assisted adaptation of PDCCH monitoring according to one embodiment of the present disclosure is shown. Fig.14 The embodiments shown in the drawings are for illustration only. Other embodiments may be used without departing from the scope of the present disclosure.

[0168] like Fig.14 As shown, in step 1401, the UE transmits auxiliary information or AR for a preferred value of any PDCCH monitoring related adaptation entity (such as PDCCH monitoring periodicity T_PDCCH). In step 1402, the UE may receive an AR from the gNB for triggering adaptation of PDCCH monitoring, or an ACK from the gNB in ​​response to the AR transmitted from the UE. The UE then performs adaptation of the corresponding adaptation entity related to PDCCH monitoring indicated by the AR from the gNB or the received AR.

[0169] In a third method of the time domain UE adaptation scheme, the AR may trigger UE adaptation of the processing timeline of data transmission / reception. The AR may indicate adaptation of at least one of the following UE processing timeline related adaptation entities: In one example, the UE processing timeline related adaptation entity may be K1, where K1 is the time between the PDSCH to HARQ_feedback timing indicator or one or more PDSCH receptions and the transmission of the PUCCH including the corresponding HARQ-ACK information. The AR may indicate to the UE a default set of slot timing values ​​for extending / reducing K1, including the size / granularity of K1 (expressed as |K1|) or the range of elements in the set of K1 values. In another example, the UE processing timeline related adaptation entity may be a default K0, where when the field of K0 is not in the configured TDRA table (i.e., PDSCH-TimeDomainResourceAllocationList) of the DL data transmission, the default K0 is the slot offset between the last symbol of the received CORESET of the DCI format for scheduling PDSCH reception and the PDSCH reception. In another example, the UE processing timeline-related adaptive entity may be a default K2, where when the field of K2 is not in the configured TDRA table (i.e., PUSCH-TimeDomainResourceAllocationList) for UL data transmission, the default K2 is the time slot offset between the last symbol of the CORESET of the DCI format for scheduling PUSCH transmission and the PUSCH transmission.

[0170] In yet another example, the UE processing timeline-related adaptive entity may be the minimum scheduling delay for PDSCH reception / PUSCH transmission (denoted as X / Y in this disclosure), where X is the minimum slot offset between the last symbol of the CORESET for DL DCI format reception and the corresponding PDSCH reception, and Y is the minimum slot offset between the last symbol of the CORESET for UL DCI format reception and the corresponding PUSCH transmission. For any dynamic slot offset K0 between the last symbol of the CORESET for DL DCI format reception and the corresponding PDSCH reception indicated by the DL DCI format, the UE assumes that K0 >= X. For any dynamic slot offset K2 between the last symbol of the CORESET for UL DCI format reception and the corresponding PUSCH transmission indicated by the UL DCI format, the UE assumes that K2 >= Y. When the field of K0 is not in the configured TDRA table (i.e., PDSCH-TimeDomainResourceAllocationList) of the DL DCI format (such as DCI format 1_0 / 1_1), the UE may apply the minimum slot offset X as the default value of K0. When the field of K2 is not in the configured TDRA table (i.e., PUSCH-TimeDomainResourceAllocationList) of the UL DCI format (such as DCI format 0_0 / 0_1), the UE may apply the minimum slot offset Y as the default value of K2.

[0171] In a sub-example, the AR may indicate to extend / reduce or dynamically scale X / Y. For example, X = c1 * X, Y = c2 * Y, where c1 and c2 are scalars carried in the AR. For example, c1 = 2, c2 = 2. For an entry in the TDRA table where K0 < X, the UE may assume the actual K0 of this entry is X. For an entry in the TDRA table where K2 < Y, the UE may assume the actual K2 of this entry is Y.

[0172] In another sub-example, the AR may indicate the exact values of X / Y. A set of candidate values of X / Y may be provided to the UE via higher layer signaling, and the AR may indicate one of the candidates. For an entry in the TDRA table where K0 < X, the UE may assume the actual K0 of the entry to be X. For an entry in the TDRA table where K2 < Y, the UE may assume the actual K2 of the entry to be Y. In yet another sub-example, the AR may indicate the offset of K0 / K2, denoted as O0 / O2. The actual slot offset between the last symbol of the CORESET received in the DCI format and the corresponding PDSCH reception or PUSCH transmission may be K0 + O0 or K2 + O2, respectively. The minimum slot offset is X = K0' + O0 and Y = K2' + O2, where K0' / K2' is the minimum K0 / K2 value from the active TDRA table or the default TDRA table (if no additional TDRA table is configured), or the default value when the field is not in the TDRA table of the DCI format.

[0173] In yet another example, the UE processing timeline related adaptive entity may be the maximum slot offset between the last symbol of the CORESET received in the DCI format and the correspondingly corresponding scheduled PDSCH / PUSCH, denoted as X' / Y'. For any time offset K0 between the last symbol of the CORESET received in the DL DCI format or the UL DCI format and the corresponding PDSCH reception or PUSCH transmission, they are K0 <= X' or K2 <= Y', respectively. When the field indicating K0 is not in the DL DCI format (such as DCI format 1_0 / 1_1), the UE may apply the maximum slot offset X’ as the default value. When the field indicating K2 is not in the UL DCI format (such as DCI format 0_0 / 0_1), the UE may apply the maximum slot offset Y’ as the default value. In one sub-example, the AR may indicate to the UE to extend / reduce or scale X' / Y'. For example, X = c1 * X, Y = c2 * Y, where c1 and c2 are scalars provided by the AR. For example, c1 = 2, c2 = 2. For an entry in the TDRA table where K0 > X', the UE may assume the actual K0 of the entry to be X'. For an entry in the TDRA table where K2 > Y', the UE may assume the actual K2 of the entry to be Y'. In another sub-example, the AR may indicate the exact values of X' / Y'. The AR may indicate one of the configured candidate values of X' / Y'. For an entry in the TDRA table where K0 > X', the UE may assume the actual K0 of the entry to be X'. For an entry in the TDRA table where K2 > Y', the UE may assume the actual K2 of the entry to be Y'.

[0174] In yet another sub-example, the AR may indicate an offset of K0 / K2, denoted as O0 / O2. The actual slot offset between the last symbol of the CORESET in the DCI format and the corresponding PDSCH or PUSCH may be K0+O0 or K2+O2, respectively. The maximum slot offset X' / Y' is the maximum K0 / K2 value from the active TDRA table or the default TDRA table (if no additional TDRA table is configured), or the default value when the field is not in the DCI format.

[0175] In another example, the UE processing timeline related adaptation entity may be the maximum code block group (CBG) size per TB, i.e., maxCodeBlockGroupsPerTransportBlock. The AR may indicate one or more preferred values ​​from a set of predefined adaptation candidates for the maximum code block group (CBG) size per TB. In another example, the UE processing timeline related adaptation entity may be a time slot aggregation factor L0 to receive or transmit a TB on L0>=1 consecutive time slots in the PDSCH or PUSCH, respectively. L0 may be applied to at least a UE-specific search space. The candidate list for L0 may be defined in the specification of the system operation or provided to the UE via higher layer signaling. The AR may indicate one of the predetermined or preconfigured values.

[0176] Fig.15 An example of a UE procedure for UE-assisted adaptation of cross-slot scheduling of data reception / transmission according to one embodiment of the present disclosure is shown. Fig.15 The embodiments shown in the drawings are for illustration only. Other embodiments may be used without departing from the scope of the present disclosure.

[0177] like Fig.15 As shown, in step 1501, the UE receives the configuration of the time domain resource allocation (TDRA) table for PDSCH reception or PUSCH transmission, and derives the minimum scheduling offset (X or Y, respectively) for PDSCH reception or PUSCH transmission as the minimum value of K0 / K2 in the TDRA table. In step 1502, the UE transmits auxiliary information for the preferred value (X or Y) of the minimum scheduling delay or time offset between the last symbol of PDCCH reception and the corresponding PDSCH reception or PUSCH transmission. In step 1503, the UE determines whether the UE receives a response from the gNB. When the UE receives a response from the gNB, in step 1504, the UE adapts the value of X or Y accordingly. For example, the response from the gNB can be an ACK to the preferred value indicated by the UE in the AR transmission. For another example, the response can be an AR indicating the exact value of X or Y.

[0178] Fig.16Shows an example of UE adaptation to the minimum scheduling delay for data reception / transmission according to an embodiment of the present disclosure. Fig.16 The embodiments shown are for illustrative purposes only. Other embodiments may be used without departing from the scope of the present disclosure.

[0179] In step 1601, the UE receives an AR for updating the minimum slot offset X / Y between the last symbol of the CORESET for DCI format reception and the corresponding PDSCH / PUSCH. In step 1602, the UE receives the PDSCH or transmits the PUSCH with the scheduling delay K0 / K2 indicated by the DCI format. In step 1603, the UE determines whether K0 < X or K2 < Y. When K0 < X or K2 < Y, in step 1605, the UE assumes that the actual delay between the last symbol of the CORESET for DCI format reception and the corresponding PDSCH / PUSCH is X / Y; otherwise, in step 1604, the UE assumes that the actual delay between the last symbol of the CORESET for DCI format reception and the corresponding PDSCH / PUSCH is K0 / K2.

[0180] Adaptation to the UE processing timeline can be jointly indicated for one or a combination of the following entities from other operation dimensions.

[0181] In one example, the adaptation entity from another operation dimension for co - adaptation with the UE processing timeline can be the activation (de - activation) of an SCell.

[0182] In another example, the entity from another operation dimension for co - adaptation with the UE processing timeline can be an active BWP. In another sub - example, the applicable value of any UE processing timeline - related adaptation entity per BWP can be provided to the UE, and the UE applies this applicable value to the UE processing timeline - related adaptation entity associated with the active BWP.

[0183] In yet another example, the entity from another operation dimension for co - adaptation with the UE processing timeline can be the PDCCH monitoring periodicity. The minimum PDCCH monitoring periodicity of the UE - specific search space set can be equal to the minimum of X and Y, where X and Y are the minimum K0 and minimum K2, respectively. When the AR indicates the adaptation of X or Y, the minimum PDCCH monitoring periodicity T^PDCCH_min of the applicable search space set can be adapted accordingly, where T^PDCCH_min = min(X, Y). The UE assumes that the PDCCH monitoring periodicity ks of the associated search space set is not less than T^PDCCH_min, such that ks >= T^PDCCH_min. The associated search space set can be the UE - specific search space set.

[0184] In yet another example, an entity from another operation dimension for co - adaptation with the UE processing timeline can be the minimum slot offset of aperiodic CSI - RS measurements. When the AR indicates the adaptation of X, the minimum slot offset of aperiodic CSI - RS measurements can be adapted accordingly, where Z = X. The UE assumes that the slot offset of aperiodic CSI - RS measurements indicated in the DCI format triggering the CSI - RS measurement is not less than Z.

[0185] Fig.17 An example of co - adaptation of the minimum scheduling delay for data reception / transmission and the minimum PDCCH monitoring periodicity according to an embodiment of the present disclosure is shown. Fig.17 The embodiments shown are for illustrative purposes only. Other embodiments may be used without departing from the scope of the present disclosure.

[0186] In step 1701, the UE receives an AR indicating the minimum slot offset X / Y between the last symbol of the CORESET indicating the DCI format reception and the corresponding PDSCH / PUSCH. In step 1702, the UE assumes that for the applicable search space set, the minimum PDCCH monitoring periodicity T^PDCCH_min = min(X, Y). The applicable search space set can be the UE - specific search space set associated with DCI formats 0_0 / 0_1 / 1_0 / 1_1. In step 1703, the PDCCH monitoring periodicity ks of the applicable search space set is provided to the UE. In step 1704, the UE then determines whether ks < T^PDCCH_min. If ks < T^PDCCH_min, then in step 1706, the UE assumes that the actual PDCCH monitoring periodicity of the associated search space set is T^PDCCH_min; otherwise, in step 1705, the UE assumes that the actual PDCCH monitoring periodicity of the associated search space set is ks.

[0187] Fig.18 An example of co - adaptation of the minimum scheduling delay for data reception and the minimum slot offset of aperiodic CSI - RS measurements according to an embodiment of the present disclosure is shown. Fig.18 The embodiments shown are for illustrative purposes only. Other embodiments may be used without departing from the scope of the present disclosure.

[0188] In step 1801, the UE receives an AR indicating the minimum slot offset X between the last symbol of the CORESET for receiving the DCI format and the corresponding PDSCH. In step 1802, the UE assumes a minimum slot offset Z for the aperiodic CSI-RS measurement, where Z = X. In step 1803, the UE is triggered to measure the aperiodic CSI-RS with a slot offset O indicated by the DCI format. In step 1804, the UE determines whether O < Z. When O < Z, in step 1806, the UE assumes that the latest AR is received incorrectly and assumes that the value of Z / X is the default value, for example, the minimum candidate value Z = 0, and the minimum slot offset X between the last symbol of the CORESET for receiving the DCI format and the corresponding PDSCH is 0; otherwise, in step 1805, the UE assumes that the actual slot offset for the aperiodic CSI-RS measurement is O.

[0189] To reduce signaling overhead, the AR may indicate a common / unified minimum processing delay F for at least one of the following processing timeline-related adaptive entities applicable to some associated search space sets. Given an applicable value of the common / unified minimum processing delay (i.e., F), the UE assumes that the applicable value E of any associated adaptive entity is not less than F, such that E >= F. The associated adaptive entities may be at least one of the following: the minimum slot offset between the last symbol of the CORESET for receiving the DCI format and the corresponding PDSCH or PUSCH; the default value of the slot offset between the last symbol of the CORESET for receiving the DCI format and the corresponding PDSCH or PUSCH when the fields of K0 or K2 are not in the configured TDRA table (i.e., PDSCH-TimeDomainResourceAllocationList or PUSCH-TimeDomainResourceAllocationList), respectively; the minimum aperiodic CSI-RS trigger offset; the minimum slot offset between the reception of one or more PDSCHs and the transmission of the PUCCH including the corresponding HARQ-ACK information; the minimum aperiodic SRS (A-SRS) slot offset; and / or the PDCCH monitoring periodicity of the associated search space set.

[0190] For AR regarding a uniform minimum processing delay F, for example, a list of candidate values ​​for F may be provided to the UE and the AR may indicate an applicable value for F. The candidate values ​​may be provided to the UE via higher layer signaling or defined in the specification of the system operation. In one example, for the former case, the candidate value may be a candidate value of K0 or K2 in the configured TDRA table (without duplication). For another example, an applicable value of F per BWP may be provided to the UE, and the UE adapts its operation to the corresponding value of F associated with the active DLBWP. For another example, an offset of F may be provided to the UE. In this case, the UE applies the offset O to any associated processing timeline-related adaptation entity E, such that E=E'+O, where E' is the initially applicable value of the associated processing timeline-related adaptation entity.

[0191] Fig.19 An example of a UE adaptation procedure for minimum processing delay of one or more processing timeline-related adaptation entities according to one embodiment of the present disclosure is shown. Fig.19 The embodiments shown in the drawings are for illustration only. Other embodiments may be used without departing from the scope of the present disclosure.

[0192] The candidate list of minimum processing delay may be predefined in the specification of system operation or provided to the UE through higher layer signaling. For example, the candidate value list may be candidate values ​​of K0 of the configured TDRA table received from the PDSCH in the active BWP in ascending or descending order (without duplication). For another example, the candidate value list may be two values, one of which is zero and the other is a non-zero value and configured through higher layer signaling. In step 1901, the applicable adaptation entity may be defined in the specification of system operation or provided to the UE through higher layer signaling. The UE receives an AR from the gNB, wherein the AR indicates an applicable value of the minimum processing delay F in the active BWP of the serving cell with the SCS configuration of u_AR at time slot n_AR (in step 1902). In step 1903, the UE applies the indicated applicable value after the delay PT2 after n_AR. The UE may determine the time slot index for applying the indicated minimum processing delay according to the method in embodiment 1-B of the present disclosure. After applying the delay PT2, the UE expects the value E of any applicable adaptation entity to be no less than the indicated minimum processing delay F, such that E>=F for the associated search space set.

[0193] When cross-carrier scheduling is enabled for a UE and the UE receives an AR from a scheduling cell via a DCI format that schedules PDSCH reception or PUSCH transmission, where the DCI format indicates an applicable value of the minimum processing delay F, the UE assumes that the minimum processing delay of the scheduled cell is max(F_min, ) or max(F_min, )or or μ cell2 is the SCS configuration of the active BWP in the scheduled cell / carrier, μ cell1 is the SCS configuration for the active BWP in the scheduling cell / carrier, and F_min is the minimum feasible value or default value for the minimum processing delay. F_min may be defined in the specification of the system operation, e.g., F_min=1 timeslot, or provided to the UE via higher layer signaling.

[0194] For applying the minimum processing delay F, when the minimum PDCCH monitoring periodicity is one of the associated adaptation entities, the UE assumes that the PDCCH monitoring periodicity T_PDCCH of the associated search space set is equal to the minimum processing delay, so that if T_PDCCH is less than F, then T_PDCCH=F. When the minimum slot offset between the last CORESET symbol for DCI format reception and the corresponding PDSCH reception is one of the associated adaptation entities, the UE does not expect the slot offset K0 between the last CORESET symbol for DCI format reception and the corresponding PDSCH reception to be less than F. When the minimum slot offset between the last CORESET symbol for DCI format reception and the corresponding PUSCH transmission is one of the associated adaptation entities, the UE does not expect the slot offset K2 between the last CORESET symbol for DCI format reception and the corresponding PUSCH transmission to be less than F.

[0195] When the default value of the slot offset between the last CORESET symbol received in a DCI format and the corresponding PDSCH reception is one of the associated adaptation entities, the UE assumes that when the field of K0 is not in the configured TDRA table (i.e., PDSCH-TimeDomainResourceAllocationList), the slot offset between the last CORESET symbol received in the DCI format and the corresponding PDSCH reception is F. When the default value of the slot offset between the last CORESET symbol received in a DCI format and the corresponding PUSCH transmission is one of the associated adaptation entities, the UE assumes that when the field of K2 is not in the configured TDRA table (i.e., PUSCH-TimeDomainResourceAllocationList), the slot offset between the last CORESET symbol received in the DCI format and the corresponding PUSCH transmission is F. When the minimum aperiodic CSI-RS triggering offset is one of the associated adaptation entities, the UE does not expect the aperiodic CSI-RS triggering offset to be less than F. When the minimum slot offset between one or more PDSCH receptions and the transmission of a PUCCH including corresponding HARQ-ACK information is one of the associated adaptation entities, the UE does not expect the slot offset K1 between one or more PDSCH receptions and the transmission of a PUCCH including corresponding HARQ-ACK information to be less than F. When the aperiodic SRS (A-SRS) slot offset is one of the associated adaptation entities, the UE does not expect the aperiodic SRS slot offset to be less than F.

[0196] Adaptation to skipping PDCCH monitoring may be employed together with adaptation to the minimum processing delay F. When a non-zero minimum processing delay F>0 (in units of one slot) is applied, the UE may monitor only the first PDCCH monitoring opportunity and skip the remaining PDCCH monitoring opportunities between slot n and slot n+F-1 (i.e., [n, n+F-1] for the associated search space set), where n is the slot index of the PDCCH monitoring opportunity not skipped by the UE.

[0197] In another method, one adaptive entity in the dimension of time domain radio resources may be a schedulable slot for multi-slot scheduling.When the number K of schedulable slots per DCI format is greater than one, a 1-to-N mapping may be supported between a DCI format and a corresponding TB in PDSCH reception or PUSCH transmission.

[0198] For any associated search space set that processes timeline-related adaptation, the associated search space set may be defined in the specification of system operation or provided to the UE via higher layer signaling. In the former case, for example, the associated search space set may be a UE-specific search space set that is at least not associated with a DCI format that schedules PDSCH reception or PUSCH transmission associated with a URLLC service. Let DCI format 1_2 and DCI format 0_2 be the DCI formats for PDSCH and PUSCH for scheduling URLLC services, respectively. If the search space set is configured to the UE for monitoring DCI format 0_2 or DCI format 1_2 with CRC (where the CRC is scrambled by the C-RNTI), the UE may assume that the minimum processing delay of the search space set is zero regardless of the minimum processing delay indicated by the AR. Similarly, when CSI-RS reception is triggered by DCI format 0_2 and DCI format 1_2, a different (smaller) minimum time offset may be applied than when CSI-RS reception is triggered by DCI format 0_0, DCI format 0_1, DCI format 1_0, and DCI format 1_1. Similarly, for PDSCH reception scheduled by DCI format 1_2, a different (fewer) number of maximum MIMO layers may be applied than for PDSCH reception scheduled by DCI format 1_0 or DCI format 1_1, because the former is typically associated with reception of small TBs and enhanced reception reliability rather than greater data rates.

[0199] For another example, when an AR is provided through a DCI format, the associated search space set may be the search space set of the AR in which the UE receives the minimum processing delay. In this case, the minimum processing delay indicated by the AR can only be applied to the associated adaptation entities in the search space set in which the UE receives the AR. In the latter case, a higher layer parameter may be provided to the UE together with the search space set configuration to indicate whether the UE may apply any minimum processing delay indicated by the AR to the search space set.

[0200] In a fourth method of the time domain UE adaptation scheme, the AR may trigger UE adaptation associated with a certain number of schedulable time slots for transmission of multiple TBs. When the number M of schedulable time slots per DCI format is greater than one, the DCI format may be used to schedule M TBs on M consecutive time slots. A consecutive time slot is a time slot in which a corresponding PDSCH reception or PUSCH transmission may be performed, and for example, for PUSCH transmission, does not include a DL time slot, or generally speaking, a time slot in which the number of UL symbols is less than the number of symbols indicated for PUSCH transmission. The AR may indicate adaptation of at least one of the following adaptation entities associated with a certain number of schedulable time slots for transmission of multiple TBs.

[0201] In one example, the adaptation entity may be the minimum number of schedulable time slots per DCI format, denoted as M_min. For a valid M_min, when the UE receives a DCI format for scheduling M TBs on M consecutive time slots, the UE does not expect to receive M>=M_min. A list of candidate values ​​for M_min may be defined in the specification of the system operation or provided to the UE via higher layer signaling. The AR may indicate an applicable value for M_min from the list.

[0202] In another example, the adaptation entity may be the maximum number of schedulable time slots per DCI format, denoted as M_max. For a valid M_max, when the UE receives a DCI format for scheduling M TBs on M consecutive time slots, the UE does not expect to receive M <= M_max. A list of candidate values ​​for M_max may be defined in the specification of the system operation or provided to the UE via higher layer signaling, and the AR may indicate an applicable value of M_max from the list.

[0203] In yet another example, the adaptation entity may be the number of schedulable slots per DCI format, M. A list of candidate values ​​for M may be defined in the specification of system operation or provided to the UE through higher layer signaling, and the AR may indicate an applicable value of M from the list.

[0204] Table 1 shows an example of a common adaptation table in the time domain. The columns of the adaptation table may be associated with adaptation entities, such as PDCCH monitoring periodicity, C-DRX cycle, and minimum processing delay. Each row of the table indicates common adaptation for the corresponding adaptation entity and may be associated with a different power saving state.

[0205] Table 1: Common adaptation table in time domain

[0206]

[0207] Embodiment 2-B. Frequency Domain Radio Resources

[0208] The second sub-embodiment considers a UE adaptation scheme in the frequency domain. One or a combination of the following examples or methods of UE adaptation in the dimension of frequency domain radio resources may be supported.

[0209] In the first frequency domain UE adaptation, the AR may trigger UE adaptation of the CORESET configuration in the active DL BWP. The AR may instruct adaptation of at least one of the following CORESET configuration adaptation entities.

[0210] In one example, the CORESET configuration related entity for adaptation may be the corresponding number of consecutive symbols. The AR may indicate increasing or decreasing the number of consecutive symbols of the CORESET.

[0211] In another example, the CORESET configuration-related entity for adaptation may be a corresponding resource block set.

[0212] In yet another example, multiple configuration candidates of CORESET for different traffic loads / UE power states / delay requirements / UE mobility states / link qualities / channel conditions may be provided to the UE through higher layer signaling. The AR may indicate one of the pre-configured configuration candidates.

[0213] The corresponding CORESET may be provided to the UE through higher layer signaling, for example, a configuration parameter may indicate whether the CORESET can be adapted by the AR. Alternatively, the corresponding CORESET ID may be provided by the AR.

[0214] In the second frequency domain UE adaptation scheme, the AR may trigger UE adaptation for active DL / UL BWP or DL / UL BWP switching. To trigger BWP switching by AR transmitted from the UE, the non-zero power CSI-RS (NZP CSI-RS) configuration for CSI measurement in the inactive BWP may be signaled to the UE. Otherwise, the channel quality of the inactive BWP may be determined based on the measurement, depending on the UE implementation. For AR transmitted from the UE, the AR may indicate one or more preferred active DL / UL BWPs.

[0215] In the third method of frequency domain UE adaptation, when the UE operates in CA mode, the AR can indicate the activation (deactivation) of the SCell. The configured cells or component carriers (CCs) can be divided into multiple groups by the UE or by the gNB. When the CC group is constructed by the UE, the CC group information can be reported to the gNB through higher layer signaling. When the CC group is constructed by the gNB, the CC group information can be reported to the UE through higher layer signaling. The AR can indicate the activation (deactivation) of one or more CC groups. Alternatively, the AR can explicitly carry the ID of the SCell to be activated (deactivated).

[0216] DL / UL BWP switching may be jointly adapted with one or a combination of the following adaptation entities from other operation dimensions.

[0217] In one example, an adaptation entity from another operation dimension that is jointly adapted with DL / UL BWP switching may be the activation (deactivation) of SCells. In this case, a set of active SCells may be pre-configured for each configured BWP via higher layer signaling. When the UE is triggered to switch to a new DL / UL BWP, the UE may operate in the pre-configured active SCell associated with the target BWP indicated by the AR.

[0218] In another example, the adaptation entity from another operation dimension that is jointly adapted with the DL / UL BWP switching may be a C-DRX configuration. In this case, the C-DRX configuration may be provided to the UE via higher layer signaling for each configured BWP. When the UE is triggered to switch to a new DL / UL BWP, the UE may initiate C-DRX operation using the configuration associated with the target BWP indicated by the AR.

[0219] In yet another example, an adaptation entity from another operational dimension that is jointly adapted with DL / UL BWP switching may be a maximum number of transmitter / receiver (TX / RX) antenna ports or a maximum number of DL / UL MIMO layers. In this case, the maximum number of TX / RX antenna ports or the maximum number of DL / UL MIMO layers may be provided to the UE via higher layer signaling for each configured BWP. When the UE is triggered to switch to a new active DL / UL BWP, the UE applies the maximum number of TX / RX antenna ports or the maximum number of DL / UL MIMO layers associated with the target BWP.

[0220] Fig. 20 An example of a UE procedure for joint adaptation of DL / UL BWP switching and the maximum number of MIMO layers or the maximum number of TX / RX antenna ports according to one embodiment of the present disclosure is shown. Fig. 20 The embodiments shown in the drawings are for illustration only. Other embodiments may be used without departing from the scope of the present disclosure.

[0221] like Fig. 20 As shown, in step 2001, the maximum number of TX / RX antenna ports or the maximum number of DL / UL MIMO layers may be provided to the UE through higher layer signaling for each configured BWP. When the UE is triggered to switch to a new active DL / UL BWP in step 2002, the UE applies the maximum number of TX / RX antenna ports or the maximum number of DL / UL MIMO layers associated with the target BWP in step 2003.

[0222] Embodiment 2-C. Spatial Domain Radio Resources

[0223] The second sub-embodiment considers a UE adaptation scheme in the spatial domain. One or a combination of the following examples or methods of UE adaptation in the dimension of spatial domain radio resources may be supported.

[0224] In the first method of spatial domain UE adaptation, the AR may indicate to the UE to activate (deactivate) one or more RX or TX antenna ports at the UE for PDSCH reception or PUSCH transmission, respectively. When the AR is transmitted from the UE to the gNB, the association between the TX or RX antenna port adaptation and the CQI index or RS receiver power (RSRP) or received SINR may be specified or configured to the UE. When the corresponding measurement result is lower than a specified or configured first threshold, the UE may request to deactivate the TX or RX antenna port. The UE may perform subsequent measurements on the deactivated TX or RX antenna port. When the measurement result of the deactivated TX or RX antenna port is higher than a specified or configured second threshold, the UE may send an AR to the gNB to activate the TX or RX antenna port. When the AR is transmitted from the gNB to the UE, the gNB may trigger adaptation accordingly based on the UE's feedback on the CQI index or RS receiver power (RSRP) report or the received SINR of the TX / RX antenna port.

[0225] Fig.21 An example of a UE procedure for (de)activation of an antenna port according to one embodiment of the present disclosure is shown. Fig.21 The embodiments shown in the drawings are for illustration only. Other embodiments may be used without departing from the scope of the present disclosure.

[0226] like Fig.21 As shown, in step 2101, the UE may measure the channel quality, such as CQI, of the configured antenna port for PDSCH or PDCCH reception. In step 2102, the UE then determines whether the measured CQI is less than a threshold T0, where T0 may be defined in the specification of the system operation, such as T0=3, or provided to the UE through higher layer signaling.

[0227] When the CQI is less than T0, the UE determines whether the antenna port is activated in step 2103. When the antenna port is activated, the UE transmits an AR to deactivate the antenna port in step 2104. In step 2105, the UE then does not expect to receive a PDSCH or a PDCCH through the antenna port.

[0228] When the CQI is not less than T0 (or another threshold T1), the UE then determines whether the antenna port is deactivated in step 2106. When the antenna port is deactivated, the UE then transmits an AR to the gNB to activate the antenna port in step 2107. In step 2108, the UE then assumes that the UE can receive PDSCH or PDCCH through the antenna port.

[0229] In the second method of spatial domain UE adaptation, the AR may trigger UE adaptation of the maximum number of RX or TX antenna ports for PDSCH reception or PUSCH transmission. A list of candidate values ​​for the maximum number of TX or RX antenna ports may be provided to the UE. The AR may indicate a value for the maximum number of TX or RX antenna ports from a preconfigured candidate list.

[0230] In the third method of spatial domain UE adaptation, the AR may trigger UE adaptation of the maximum number of MIMO layers for PUSCH transmission or PDSCH reception. A list of candidate values ​​for the maximum number of MIMO layers for PUSCH transmission or PDSCH reception may be defined in the specification of system operation or provided to the UE via higher layer signaling and limited by UE capabilities. The AR may indicate a value for the maximum number of TX or RX antenna ports from a preconfigured candidate list.

[0231] Adaptation to any spatial domain radio resource may be adapted jointly with the active BWP. The applicable value of any spatial domain radio resource related adaptation entity per BWP may be provided to the UE, and the UE applies the applicable value associated with the active BWP. When the UE is triggered to switch BWP, the UE adapts the applicable value of any spatial domain radio resource related adaptation entity accordingly.

[0232] For an AR with respect to any spatial domain radio resource related adaptation entity E, in one example, a list of candidate values ​​of E may be provided to the UE and the AR may indicate an applicable value of E. The candidate values ​​may be provided to the UE via higher layer signaling or defined in the specification of the system operation. In another example, an offset O may be provided to the UE. The UE applies the offset O to the spatial domain radio resource related adaptation entity E, such that E=E'+O, where E' is the initial applicable value of the spatial domain radio resource related adaptation entity.

[0233] The spatial domain radio resource-related adaptation entity can be any of the following: the activated TX or RX antenna ports for PDSCH reception or PUSCH transmission at the UE; the maximum number of TX or RX antenna ports for PDSCH reception or PUSCH transmission; the maximum number of MIMO layers for PDSCH reception or PUSCH transmission; or the activated (deactivated) number or set of SCells.

[0234] Example 2-D. Baseband Processing Overhead Reduction

[0235] The fourth sub-embodiment considers a UE adaptation scheme for baseband processing. One or a combination of the following examples or methods for UE adaptation in the dimension of baseband processing overhead reduction may be supported.

[0236] In a first method of UE adaptation related to baseband processing, the AR may indicate adaptation of the PDCCH blind decoding operation at the UE. The AR may indicate adaptation of at least one of the following PDCCH blind decoding related adaptation entities.

[0237] In one example, the PDCCH blind decoding related adaptation entity may be a set of monitored CCE aggregation levels (ALs) of at least one or more search space sets. For example, adaptation of the monitored CCE aggregation level may be based on the link quality experienced by the UE, such as the RSRP or CQI of the corresponding CORESET or active BWP. The AR for the DL / UL BWP may be provided based on any of the UE adaptation procedures defined in Embodiment 1. In a sub-example, the UE may transmit periodic or triggered ARs to the gNB to inform the UE of one or more preferred configurations of the CCE ALs for the UE to monitor. The gNB may confirm the actual set of CCE ALs to be monitored by the UE through an AR response. In another sub-example, the UE may transmit periodic or triggered UE assistance information reports to the gNB. The gNB may confirm or adjust the set of CCE ALs to be monitored by the UE through an AR response. The UE assistance information in the associated report may include one or a combination of the following information: the link quality associated with PDCCH reception in the CORESET or in the DL BWP, where the UE is configured to monitor the PDCCH; one or more preferred sets of CCE ALs for the UE to monitor the PDCCH.

[0238] In another example, the PDCCH blind decoding related adaptation entity may be the total number of PDCCH candidates on all CCE ALs. The AR may indicate scaling the number of PDCCH candidates to X% of the configured number of PDCCH candidates in the associated CORESET or on all CORESETs, where 0 < X <= 100. In the case of obtaining a fraction of PDCCH candidates for the CCE AL after scaling, a "floor" or "ceiling" function of the number may be applied and it may be specified whether it is "floor" or "ceiling" in the system operation.

[0239] In yet another example, the PDCCH blind decoding related adaptation entity may be the PDCCH blind decoding capability, i.e., the number of PDCCH blind decodings performed by the UE per time slot. The AR may indicate to the UE scaling the number of PDCCH blind decodings per time slot to X% of the configured capacity, where 0 < X <= 100. Similar to the number of PDCCH candidates, a "floor" function or "ceiling" function may be further applied to the scaled number.

[0240] In yet another example, the PDCCH blind decoding related adaptation entity may be the minimum CCE AL to be monitored. For a minimum CCE AL v, the UE is not expected to monitor a CCE AL less than v.

[0241] In another example, the PDCCH decoding / monitoring related adaptation entity may be to enable the UE to skip PDCCH monitoring within a certain number of C-DRX cycles after AR reception. The number of C-DRX cycles may be provided to the UE in advance through higher layer signaling or indicated by the AR. The AR indication that enables the UE to skip PDCCH monitoring within a certain number of C-DRX cycles may be applied to a subset of DCI formats that the UE is configured to monitor. For example, the AR indication that enables the UE to skip PDCCH monitoring may be applied to the search space set associated with DCI formats 0_0, 0_1, 1_0, and 1_1, but not to the search space set associated with DCI formats 0_2 and 1_2. For example, the search space set may be associated with a UE-specific search space. The motivation is that the previous DCI format may be associated with MBB services, while the latter DCI format may be associated with decentralized URLLC services and may require low latency, which makes it difficult for the gNB to determine whether the UE can skip monitoring of DCI formats 0_2 and 1_2 in the next C-DRX cycle. It is also possible that the gNB configures the UE to receive AR for adaptive PDCCH decoding operation only when the UE is not configured to monitor DCI formats 0_2 and 1_2. When the UE is configured to monitor DCI formats 0_2 and 1_2, the UE does not expect to receive a configuration for receiving AR to skip PDCCH monitoring in the following C-DRX cycle.

[0242] Fig. 22 An example of a UE procedure for adaptation of the minimum CCE aggregation level to be monitored according to one embodiment of the present disclosure is shown. Fig. 22 The embodiments shown in the drawings are for illustration only. Other embodiments may be used without departing from the scope of the present disclosure.

[0243] like Fig. 22 As shown, in step 2201, the UE may measure and determine the minimum control channel element (CCE) aggregation level (AL) so that the UE can detect a predetermined or any DCI format with a target block error rate (BLER). The UE then transmits an AR to the gNB to indicate the minimum CCE AL 2202. In step 2203, the UE may receive a response from the gNB to confirm or adjust the minimum CCE AL. In step 2204, the UE then only monitors the configured CCE AL that is not less than the minimum CCE AL.

[0244] The adaptation of a certain number of PDCCH blind decoding related entities can be jointly adapted with one or a combination of the following adaptive entities from other operating dimensions. In one example, the adaptive entity from another operating dimension for co-adapting with a certain number of PDCCH blind decodings can be the activation (deactivation) of the SCell. In another example, the adaptive entity from another operating dimension for co-adapting with a certain number of PDCCH blind decodings can be the activation (deactivation) of the C-DRX configuration. In another example, the adaptive entity from another operating dimension for co-adapting with a certain number of PDCCH blind decodings can be the maximum number of DL / UL MIMO layers. In another example, the adaptive entity from another operating dimension for co-adapting with a certain number of PDCCH blind decodings can be the PDCCH monitoring periodicity.

[0245] In the second method of baseband processing related UE adaptation, the AR may indicate adaptation of RRM measurement. The AR may indicate adaptation of at least one of the following RRM measurement related adaptation entities:

[0246] In one example, the RRM measurement related adaptation entity may be the periodicity of the SS / PBCH block measurement time configuration (SMTC) window for SS / PBCH block-based RRM measurements. In a sub-example, the AR may indicate the scaling of the SMTC window periodicity based on changes in SS / PBCH-based RSRQ or SS / PBCH-based RSRP measurements at the UE. For example, the association between the SMTC window periodicity scaling and the changes in SS / PBCH-based RSRQ or SS / PBCH-based RSRP may be as follows. The AR may indicate when Adapt to the next larger SMTC window periodicity when X_i is the ith measurement based on SS / PBCH RSRQ or SS / PBCH RSRP, N is the number of most recently accumulated measurements, and TO is a threshold; and / or AR may indicate when It adapts to the next smaller SMTC window periodicity when X_i is the i-th measurement of SS / PBCH-based RSRQ or SS / PBCH-based RSRP, N is the number of most recently accumulated measurements, and TO is the threshold.

[0247] For another sub-example, the AR may indicate periodic adaptation of the SMTC window based on changes in channel conditions (such as channel condition states / levels as defined in Example 5). An association between predetermined adaptation candidates and different channel conditions / channel condition states / levels may be provided to the UE. The AR may indicate one or more adaptation candidates.

[0248] For another sub-example, the AR may indicate adaptation of the periodicity of the SMTC window according to the UE mobility state as defined in Embodiment 5. In this case, the association between the predetermined adaptation candidates and the different UE mobility states may be provided to the UE. The AR may indicate one or more adaptation candidates.

[0249] In another example, the radio resource management (RRM) measurement related adaptation entity may be the periodicity of CSI-RS based measurements per cell or per cell group. In a sub-example, the AR may indicate the scaling of the measurement periodicity based on the change of CSI-RS based RSRQ or CSI-RS based RSRP measurement at the UE. For example, the association between the CSI-RS measurement periodicity scaling and the change of CSI-RS based RSRQ or CSI-RS based RSRP may be as follows. The AR may indicate when Adapt to the next larger CSI-RS measurement periodicity when X_i is the ith measurement based on CSI-RS RSRQ or CSI-RS RSRP, N is the number of most recently accumulated measurements, and TO is a threshold; AR can indicate when , where X_i is the ith measurement of CSI-RS-based RSRQ or CSI-RS-based RSRP, N is the number of most recently accumulated measurements, and TO is a threshold. In another sub-example, AR may indicate adaptation to the periodicity of CSI-RS-based measurements according to changes in channel conditions (i.e., channel condition states / levels as defined in Embodiment 5).

[0250] The association between the predetermined adaptive candidate and different channel conditions / channel condition states / levels may be provided to the UE. The AR may indicate one or more adaptive candidates. In yet another sub-example, the AR may indicate adaptation of the periodicity of CSI-RS based measurements according to the UE mobility state as defined in Embodiment 5. The association between the predetermined adaptive candidate and different states of the UE mobility state may be provided to the UE. The AR may indicate one or more adaptive candidates.

[0251] In another example, the RRM measurement-related adaptation entity may be the activation (deactivation) of the carrier frequency to be measured. The RRM measurement may be a CSI-RS-based measurement or a SS / PBCH block-based measurement. In a sub-example, the AR may indicate the adaptation of the activation or deactivation of the carrier frequency list to be measured, for example, according to a change in a channel condition (such as a channel condition state / level as defined in Embodiment 5). An association between a predetermined adaptation candidate and different channel conditions / channel condition states / levels may be provided to the UE. The AR may indicate one or more adaptation candidates. In another sub-example, the AR may indicate the adaptation of the activation or deactivation of the carrier frequency list to be measured in the adaptation of the UE mobility state as defined in Embodiment 5. An association between a predetermined adaptation candidate and different UE mobility states may be provided to the UE. The AR may indicate one or more adaptation candidates.

[0252] In another example, the RRM measurement-related adaptation entity may be the activation (deactivation) of a cell per carrier frequency to be measured. The RRM measurement may be a CSI-RS-based measurement or a SS / PBCH block-based measurement. In a sub-example, the AR may indicate the adaptation of the activation or deactivation of the cell list to be measured by the UE, for example, according to a change in a channel condition (such as a channel condition state / level as defined in Embodiment 5). The association between a predetermined adaptive candidate and different channel conditions / channel condition states / levels may be provided to the UE. The AR may indicate one or more adaptive candidates. In another sub-example, the AR may indicate the adaptation of the activation or deactivation of the cell list to be measured in the adaptation of the UE mobility state as defined in Embodiment 5. The association between a predetermined adaptive candidate and different states of the UE mobility state may be provided to the UE. The AR may indicate one or more adaptive candidates.

[0253] For adaptation of RRM measurements, a set of adaptation candidates may be pre-determined in system operation with respect to different traffic loads / UE power states / delay requirements / UE mobility states / link quality / channel conditions. Each adaptation candidate may be associated with one or a combination of entities / parameters related to RRM measurements and other operational dimensions. The AR for RRM measurements may be used to indicate one or more adaptations from a predetermined set of adaptation candidates.

[0254] Embodiment 3: Power saving signal / channel in DL

[0255] The third embodiment of the present disclosure considers a physical layer signal / channel for transmitting an adaptation request from a gNB to a UE. This physical layer signal / channel is referred to as a power saving signal / channel in DL.

[0256] Embodiment 3-A: Control message for AR from gNB

[0257] The first sub-embodiment of Embodiment 3 considers a control message for delivering an AR or the content of an AR transmitted from a gNB, including an adaptation entity and corresponding updates, for triggering any UE adaptation scheme in Embodiment 2.

[0258] In a first method, the control message for conveying the AR from the gNB may be a bitmap [v0, v1, ..., v_{N-1}]. The AR indicated by the bitmap is referred to as AR format 1. This type of control message may be used to scale one or more adaptation entities. The bitmap may be included in an existing DCI format as a new field. For example, for each UE in a group of UEs, a new field may be added in DCI format 2_0 / 2_1 / _2_2 / 2_3. Alternatively, some existing fields of the DCI format may be interpreted as a bitmap for conveying the AR. For example, when the UE operates in a power saving mode / state, the existing fields in DCI format 1_0 / 1_1 may be reinterpreted to provide fields for the AR. The adaptation entities for AR format 1 may be predefined in the specification of the system operation or provided to the UE via higher layer signaling. Each of the adaptation entities is associated with one or more bits within the bitmap. The binary value v_i of the bit within the bitmap may convey one of the following updates / values ​​e_i of the associated adaptation entity according to the adaptation entity type.

[0259] Type 1.1): The associated adaptive entity has an on / off state. Then, v_i=0 / 1 can indicate activation / deactivation of the associated entity, respectively. For example, the associated adaptive entity can be an SCell or a group of SCells. When the SCell is deactivated, the UE can skip PDCCH monitoring in the deactivated SCell. For another example, the associated adaptive entity can be a search space set or a group of search space sets. For another example, the associated adaptive entity can be a CORESET or a group of CORESETs. For another example, the associated adaptive entity can be an antenna port or a group of antenna ports.

[0260] Type 1.2): Select the value of the associated adaptive entity from a list of candidate values. The list of candidate values ​​may be defined in the specification of the system operation or provided to the UE through higher layer signaling. Select an applicable value for the associated adaptive entity from a predetermined or configured candidate list. Then, v_i=0 / 1 may indicate selection of the next Nth larger / smaller value, respectively, where N is a positive integer and may be predefined in the specification of the system operation or provided to the UE through higher layer signaling. For example, the associated adaptive entity may be a long / short C-DRX cycle. For another example, the associated adaptive entity may be an inactivity timer for C-DRX operation. For another example, the associated adaptive entity may be the on-duration of the C-DRX operation.

[0261] Type 1.3): The value of the associated adaptation entity is a list / range of values. Then, v_i=0 / 1 may indicate selection of the first / second half of the default or configured range / list. For example, the associated adaptation entity may be a set of CCE aggregation levels to be monitored by the UE in the USS set.

[0262] Type 1.4): The value of the associated adaptive entity is a value in the range of v_min to v_max. Then, for example, when v_i=0, e_i=v_default, where v_default is a default configuration value or a configuration value provided by a higher layer in the range, and when vi_i=1, e_i=max(e_i / 2,v_min), which may indicate reducing the associated entity to half the value of the associated entity. When e_i / 2 is not an integer, a "floor" or "ceiling" function may be applied. For example, the associated adaptive entity may be the number of PDCCH candidates at the CCE aggregation level. For another example, the associated adaptive entity may be the number of activated antenna ports. For another example, the associated adaptive entity may be the USS monitoring periodicity; for another example, the associated adaptive entity may be the PDCCH monitoring periodicity.

[0263] In the second method, the control message for transmitting AR may be a new DCI format with N fields. This type of AR is referred to as AR format 2. Each field in the DCI format may be associated with an adaptive entity. The adaptive entity in the new DCI format may be predefined in the specification of the system operation or provided to the UE through higher layer signaling. The number of candidate values ​​for each field may be the same or different. For example, the candidate number of the field may be 2 / 4 / 8 with a size of 1 / 2 / 3 bits. The candidate value list of the associated adaptive entity may be defined in the specification of the system operation or provided to the UE through higher layer signaling. The DCI format field for transmitting the adaptive request may be configured by a higher layer such as in Tables 2 to 5. The UE may determine the association between the field in the new DCI format and the adaptive entity by any of the following. In one example, a field in the DCI format may be associated with a single adaptive entity. The associated adaptive entity may be any adaptive entity described in Embodiment 2 of the present disclosure. All examples of adaptive entities in AR format 1 may also be examples of AR format 2 and may be associated with fields in AR format 2. In another example, a field in the DCI format may be associated with multiple adaptive entities in one or more operating domains / aspects. The candidate value of each field may be an index into an adaptation table. The adaptation table collectively encodes the relationship between the associated adaptation entities.

[0264] Table 2 shows potential DCI format fields for UE adaptation per search space set s and control resource set (CORESET) p.

[0265] Table 2

[0266]

[0267]

[0268] Table 3 shows potential DCI format fields for activation (deactivation) of search space sets for PDCCH monitoring

[0269] Table 3

[0270]

[0271] Table 4 shows potential DCI format fields for power saving signals / channels monitored outside of DRX active time

[0272] Table 4

[0273]

[0274]

[0275] Table 5 shows potential DCI format fields for power saving signals / channels monitored during DRX active time

[0276] Table 5

[0277]

[0278]

[0279] In the third method, the control message for delivering the AR from the gNB can be a list of adaptive entities and corresponding value pairs. Each adaptive entity can be independently configured whether to be included in the list, and the size of AR format 3 can be determined based on the adaptive entities included in each AR message. This type of AR is called AR format 3. All examples of adaptive entities of AR format 1 or AR format 2 and their combinations can be examples of AR format 3.

[0280] Embodiment 3-B: Physical downlink channel for AR from gNB

[0281] The second sub-embodiment of Embodiment 3 considers a physical downlink channel for transmitting AR from the gNB to the UE.

[0282] AR (such as AR format 1 or AR format 2) may be delivered through PDCCH via a DCI format. A DCI format and a corresponding search space set may be defined according to one of the following examples.

[0283] In one example, the DCI format may be a modification of DCI format 1_1 / 1_0 with some new fields. For AR from gNB, the UE monitors DCI format 1_0 / 1_1 in USS.

[0284] In another example, the DCI format may be an existing DCI format, but may be interpreted differently for UEs configured to operate in a power save mode.

[0285] In another example, the DCI format may be a new UE-specific DCI format. The CRC bits of the new UE-specific DCI format may be scrambled by a new RNTI (such as CPS-RNTI). The new DCI format may reuse the structure of DCI format 1_0 / 1_0, whose CRC is scrambled by the new UE-specific RNTI, and the UE monitors the new DCI format in one or more USS sets.

[0286] In yet another example, the DCI format can be a new UE group common (GC) DCI format that the UE is configured to monitor in a CSS. The CRC bits of the new DCI format can be scrambled with a new RNTI, such as a PS-RNTI. The new DCI format can reuse the structure of DCI format 2_2 again.

[0287] Any of the following can be provided to the UE to monitor the PDCCH for the new DCI format in a search space set. Any of the following can be defined in the specification of system operation or provided to the UE via higher layer signaling.

[0288] · Search space set index s. In one example, the search space set s can be any of the configured search space sets for other purposes. In another example, the search space set s can be a dedicated search space set and cannot be used for other purposes.

[0289] · Association between the search space set s and CORESET p. For example, CORESET p can be CORESET 0.

[0290] · PDCCH monitoring periodicity of ks time slots. For example, ks = 10 time slots.

[0291] · Ts < ks indicates the number of consecutive time slots during ks, where the UE monitors PDCCH candidates in the search space set s. For example, Ts = 1.

[0292] · Number of PDCCH candidates per CCE aggregation level L PS For example, for aggregation level L For example, for aggregation level L PS = 1 or 2 or 4 or 8 or 16,

[0293] · Indication of PDCCH candidates for monitoring the associated DCI format. For example, the UE can only monitor the new DCI format in the search space set s.

[0294] Any of the following can be provided to the UE to have the CORESET for PDCCH reception provide a DCI format with an AR. Any of the following can be fixed and defined in the specification of system operation, or provided to the UE via higher layer signaling.

[0295] · CORESET index p. In one example, CORESET p can be one of the configured CORESETs for other purposes. In another example, CORESET p can be a dedicated CORESET and cannot be used for multiple purposes.

[0296] Precoder granularity of a certain number of REGs in the frequency domain, where the UE can assume that the same DM-RS precoder is used. For example, the precoder granularity can be the total bandwidth of CORESET p. In this case, the DM-RS precoder is the same for all RBs of CORESET p.

[0297] • Provides the number of consecutive symbols of the CORESET size in the time domain. For example, the number of consecutive OFDM symbols for CORESET p can be fixed to 3.

[0298] Provide a CORESET-sized resource block set in the frequency domain. For example, the resource block set of a CORESET can be fixed to 50 RBs.

[0299] When an AR is transmitted in a DCI format used for other purposes that the UE may be configured to monitor (such as a DCI format that schedules PDSCH reception or PUSCH transmission), the UE may receive multiple applicable values ​​that will be valid for the same timeslot. To avoid misunderstanding between the gNB and the UE about the applicable value of the associated adaptation entity, the UE may use any of the following methods.

[0300] In one example, when the UE receives an AR in time slot n, the UE does not expect any different AR before applying the AR after applying the delay. In another example, when the UE receives multiple ARs that become efficient / valid at the same time slot n, the UE applies only the first received AR and ignores the others. In yet another example, when the UE receives multiple ARs that become efficient / valid at the same time slot n, the UE applies only the last received AR and ignores the others. In yet another example, when the UE receives multiple ARs that become efficient / valid at the same time slot n, the UE applies only the minimum applicable value indicated by the AR. For example, when the AR indicates a minimum processing delay, the UE applies the minimum indicated value when the UE receives multiple ARs that become efficient / valid at the same time.

[0301] In order to reduce the signaling overhead while maintaining the flexibility of the adaptive granularity, multiple DCI formats with different selected fields can be defined in the specification of the system operation or provided to the UE through higher layer signaling. Each of the DCI formats may include different subsets of adaptive parameters or adaptive entities. For example, a DCI format may be associated with a PDCCH monitoring configuration. For another example, when the UE is triggered to wake up, one DCI format may be used, and when the UE is triggered to sleep, another DCI format may be used. When multiple DCI formats with different fields are supported, the DCI format indicator may be included as a field of the DCI format.

[0302] AR (such as AR format 3) from the gNB can be delivered via PDSCH in the MAC CE.

[0303] Embodiment 3-C: Power saving signal / channel for acknowledgement response from gNB

[0304] The third sub-embodiment of Embodiment 3 considers a physical downlink channel and control message for the gNB to transmit an ACK or NACK in response to receiving an AR transmission from a UE.

[0305] In a first approach, an ACK or NACK response to the UE may be provided in the PDCCH via a DCI format, such as a DCI format for scheduling PDSCH reception or PUSCH transmission. For example, a 1-bit field in one or more DCI formats may be used by the gNB to provide an ACK / NACK response to an AR from the UE, where, for example, a binary "1" value may represent a positive acknowledgement (ACK) and a binary "0" value may represent a negative acknowledgement or lack of corresponding PUCCH reception (NACK / DTX).

[0306] In the second method, an ACK or NACK response may be provided through a wakeup signal (WUS) / sleep signal (GSS).

[0307] In a third method, an ACK or NACK response may be provided to the UE via a DL RS transmission. In one example, a modified CSI-RS may be used to provide an ACK or NACK response, where, for example, an initial condition of a CSI-RS sequence may indicate an ACK or NACK response ("0" or "1"). In another example, a modified DMRS of a PDCCH or PDSCH may be used to provide an ACK or NACK response, where, for example, an initial condition of a DMRS sequence may indicate an ACK or NACK response ("0" or "1").

[0308] In a fourth method, an ACK or NACK response may be provided via a new DL channel / signal. A certain number of PRBs on one or more symbols within a timeslot may be configured by the gNB to the UE as reserved so that the gNB transmits a signal providing an ACK or NACK response to the UE's AR transmission. The UE may be expected to monitor a DL channel or signal that provides an AR response. Multiple AR responses corresponding to multiple UEs may be multiplexed in a DL channel / signal, for example using code division multiplexing (CDM) or frequency division multiplexing (FDM), and the UE may be further configured with a code in the case of CDM, or with REs in the case of FDM, in order to receive the associated AR responses.

[0309] In a fifth embodiment, the AR response may be provided through MAC / RRC signaling provided to the UE in the PDSCH, similar to the activation of the Transmit Configuration Indication (TCI) state.

[0310] Embodiment 4: Power saving signal / channel in UL

[0311] The fourth embodiment of the present disclosure considers the physical layer signal / channel design for transmitting the adaptation request from the UE to the gNB. The physical layer signal / channel is called the power saving signal / channel in the UL.

[0312] Embodiment 4-A: Control message for AR from UE

[0313] In the first method, the control message for conveying AR can be a bitmap [v0, v1, ..., v_{N-1}]. The AR indicated by the bitmap is called AR format 1. This type of control message can be used to scale one or more adaptation parameters. The bitmap can be included in other UCI in PUCCH transmission as a new field.

[0314] The adaptation entities for AR format 1 may be predefined in system operation or provided by the gNB to the UE via higher layer signaling. Each of the adaptation entities is associated with a predefined or configured bit index within a bitmap.

[0315] The binary value v_i of a bit may convey one of the following updates e_i of the associated adaptive entity according to the following adaptive entity type.

[0316] Type 1.1): The associated adaptive entity has an on / off state. Then, v_i=0 / 1 can indicate activation / deactivation of the associated entity, respectively. For example, the associated adaptive entity can be an SCell or a group of SCells. When the SCell is deactivated, the UE skips PDCCH monitoring in the deactivated SCell. For another example, the associated adaptive entity can be a search space set or a group of search space sets. For another example, the associated adaptive entity can be a CORESET or a group of CORESETs. For another example, the associated adaptive entity can be an antenna port or a group of antenna ports.

[0317] Type 1.2): Select the value of the associated adaptive entity from a list of candidate values. The list of candidate values ​​may be defined in the specification of the system operation or provided to the UE through higher layer signaling. Select an applicable value of the associated adaptive entity from a predetermined candidate list. Then, v_i=0 / 1 may indicate selection of the next Nth larger / smaller value, respectively, where N is a positive integer and may be predefined in the specification of the system operation or provided to the UE through higher layer signaling. For example, the associated adaptive entity may be a long / short C-DRX cycle. For another example, the associated adaptive entity may be an inactivity timer for C-DRX operation. For another example, the associated adaptive entity may be the on-duration of the C-DRX operation.

[0318] Type 1.3): The value of the associated adaptation entity is a list / range of values. Then, v_i=0 / 1 may indicate selection of the first / second half of the default or configured range / list. For example, the associated adaptation entity may be the CCE aggregation level to be monitored in the USS.

[0319] Type 1.4): The value of the associated adaptive entity is a value in the range of v_min to v_max. Then, for example, when v_i=0, e_i=v_default, where v_default is a default configuration value or a configuration value provided by a higher layer in the range, and when v_i=1, e_i=max(e_i / 2,v_min), which may indicate reducing the associated entity to half the value of the associated entity. When e_i / 2 is not an integer, a "floor" or "ceiling" function may be applied. For example, the associated adaptive entity may be the number of PDCCH candidates at the CCE aggregation level. For another example, the associated adaptive entity may be the number of activated antenna ports. For another example, the associated adaptive entity may be the USS monitoring periodicity. For another example, the associated adaptive entity may be the PDCCH monitoring periodicity.

[0320] In the second method, the control message for conveying AR may be a new UCI type with N fields for AR, instead of HARQ-ACK information, CSI, or SR request. This type of AR is called AR format 2. The adaptation entity may be predefined in system operation or configured by the gNB to the UE through a higher layer and indicated by UCI. For AR format 2, two types of associations between fields in UCI and configured adaptation entities are supported:

[0321] Type 2.1): A field in UCI can be associated with a single adaptive entity. The associated adaptive entity can be a single adaptive entity from one operational dimension. All instances of an adaptive entity in AR format 1 can also be instances of AR format 2 and can be associated with fields in AR format 2.

[0322] Type 2.2): A field in the UCI may be associated with multiple adaptive entities on one or more operational dimensions. The candidate value for each field may be an index from a predetermined or configured table that collectively encodes the relationship between the associated adaptive entities. The number of candidate values ​​for each field may be the same or different. For example, the number of candidate values ​​may be 1, 2, or 4.

[0323] In a third method, the message in the AR may be a list of adaptive entities with associated values. Each adaptive entity may be independently configured whether to be included in the list, and the size of the AR format 3 may be determined based on the adaptive entities contained in each AR message. This type of AR is referred to as AR format 3. All examples of adaptive entities in AR format 1, all examples of adaptive entities in AR format 2, and combinations thereof may be examples of AR format 3.

[0324] In a fourth method, the message in the AR may be a list of one or more preferred adaptations from the UE. The number of preferred adaptations that the UE may request may be predetermined in system operation, such as, for example, one adaptation, or configured by the UE through higher layers. If the UE is configured to request more than one preferred adaptation, the order of preference may be according to the order of the corresponding fields in the AR.

[0325] Embodiment 4-B: Physical UL channel for AR from UE

[0326] The second sub-embodiment of Embodiment 4 considers a physical uplink channel for transmitting AR from the UE to the gNB.

[0327] For periodic AR from the UE, the AR may be transmitted over dedicated PUCCH / PUSCH resources. The UE may be configured with AR periodicity, i.e., T0, and PUCCH / PUSCH resources for transmission of PUCCH / PUSCH including AR. Periodic AR may be consistent with periodic / semi-continuous CSI reports with the same or different periodicity, and the UE may then combine AR and CSI reports in the same PUCCH / PUSCH resource. If the number of available REs in the PUCCH / PUSCH resources (excluding UEs used for DMRS transmission) is insufficient to achieve the target coding rate for the control information in the corresponding PUCCH / PUSCH transmission, the UE may prioritize the transmission of AR over the transmission of CSI reports.

[0328] For triggered / aperiodic AR, one channel or a combination of channels as defined below may be used to transmit AR.

[0329] In the first example, PUCCH can be used to provide AR. For example, PUCCH format 2, 3, or 4 can be used to provide a bitmap of N bits to represent AR (AR format 1), where N is predefined or configured by the serving gNB to the UE through higher layer signaling. AR format 2 or AR format 3 can also be provided by PUCCH.

[0330] In a second example, PUSCH may be used to provide AR. AR transmissions in PUSCH may be through MAC CEs that may typically support larger AR payloads for more detailed AR information than AR transmissions in PUCCH. All AR formats or a subset of AR formats may be supported by MAC CEs in PUSCH.

[0331] Embodiment 5: UE auxiliary information

[0332] In one method of UE assistance information, the UE assistance information may be an implicit adaptation request for the UE's preferred adaptation, as discussed in the first embodiment of the present disclosure. This type of UE assistance information may be transmitted via a power saving signal / channel as defined in embodiment 4 of the present disclosure.

[0333] In the second method of UE auxiliary information, the UE auxiliary information may be a power saving state / mode. N>=1 power saving states / modes may be associated with different power saving schemes or UE adaptation or power saving gain levels or power consumption levels. One or more power saving states / modes may be defined in the specification of system operation or provided to the UE through higher layer signaling. For example, three power saving states PSS_0, PSS_1, PSS_2 may be predetermined by the UE to indicate high, medium, and low power saving gains or power consumption levels. The UE may report the preferred power saving gain level or power consumption level to the gNB by transmitting auxiliary information about the corresponding power saving state / mode.

[0334] In the third method of UE assistance information, the UE assistance information may be a preferred power saving signal configuration, i.e., a configuration of a physical layer signal / channel for triggering UE adaptation. The associated configuration parameter to be reported may be a monitoring periodicity of a power saving signal / channel or a BWP for receiving a power saving signal / channel. This type of UE assistance information may be reported via higher layer signaling, such as in a MAC CE, via a PUSCH transmission.

[0335] In the fourth method of UE assistance information, the UE assistance information may be associated with UE power status / UE mobility status / channel condition status / link quality status / traffic load status.

[0336] For UE battery / power state, the states of multiple UE battery / power states associated with different battery levels may be defined in the specification of system operation or provided to the UE through higher layer signaling. For example, UE power / battery state 0 / UE power / battery state 1 / UE power / battery state 2 may be predefined with respect to battery levels of (0 to 33%] / (33% to 66%] / (66% to 100%], respectively.

[0337] For UE mobility states, the states of multiple UE mobility states associated with different UE speeds or multiple handovers within a period of time can be defined in the specification of system operation or provided to the UE through higher layer signaling. For example, UE mobility state 0 / UE mobility state 1 / UE mobility state 2 can be predefined to indicate low speed / medium speed / high speed UE respectively.

[0338] For channel condition states / levels, multiple channel condition states / levels associated with the SINR / CQI / RSPR / RSRQ of the reference sequence may be defined in the specification of the system operation or provided to the UE via higher layer signaling. The channel condition state / level may be defined for each antenna port or BWP or SCell or a group of SCells.

[0339] In one example, multiple channel condition levels associated with bad / medium / good channel conditions may be predefined, such as channel condition state 0, channel condition state 1, and / or channel condition state 2.

[0340] In another example, changes in channel conditions may be captured to assist UE adaptation to operating parameters. A channel condition state may be associated with changes in SINR / CQI / RSRP / RSRQ measured over a period of time. With respect to changes in channel conditions, multiple channel condition states may be pre-determined. For example, channel condition state 0, channel condition state 1, and / or channel condition state 2 associated with small changes / moderate changes / large changes in channel conditions may be pre-defined.

[0341] For link quality states / levels, multiple link quality states / levels associated with PDCCH reception in a CORESET in which the UE is configured to monitor the PDCCH may be defined in the specification of the system operation or provided to the UE via higher layer signaling. Multiple link quality states may be associated with a channel quality indicator (CQI), for example, link quality state 0, link quality state 1, and / or link quality state 2 may be defined to indicate poor / medium / good link quality, respectively.

[0342] For the traffic load state, multiple traffic load states associated with the buffer state / size at the UE may be defined in the specification of the system operation or provided to the UE through higher layer signaling. For example, multiple traffic load states may be defined, represented as S^traffic_0, S^traffic_1, and S^traffic_2, to indicate high traffic load, medium traffic load, or large traffic load, respectively.

[0343] The predetermined UE power state, UE mobility state, channel condition state, link quality state and / or traffic load state may be fixed or provided to the UE through higher layer signaling.

[0344] The periodic UE-assisted information report in the third UE-assisted method can be transmitted via PUCCH resources. The UE can be configured with a reporting periodicity, i.e., T1, and a PUCCH resource for the transmission of the PUCCH including the report. The periodic UE-assisted information report can be consistent with a periodic / semi-continuous CSI report with the same or different periodicity, and then the UE can combine the two reports in the same PUCCH resource. If the number of available REs in the PUCCH resource (excluding UEs used for DMRS transmission) is not enough to achieve the target coding rate for all control information types in the corresponding PUCCH transmission, the UE can prioritize the transmission of the UE-assisted information report configured for power saving purposes over the transmission of the CSI report. The configuration of the periodic PUCCH / PUSCH for the UE to provide auxiliary reports may include any of the following parameters: periodicity T0; starting OFDM symbol; duration of multiple consecutive OFDM symbols; starting RB; and / or the number of consecutive RBs in the frequency domain; DMRS configuration.

[0345] For triggered UE assistance information reporting in the third UE assisted method, PUSCH may be used to provide the report.UE assistance information reports transmitted in PUSCH may be through MAC CEs that may typically support larger payloads for more detailed UE assistance information than in PUCCH.

[0346] The Radio Resource Control (RRC) state is a conventional solution for providing system access, power saving and mobility optimization to UE. In addition to the RRC states RRC_CONNECTED and RRC_IDLE already supported in 4G Long Term Evolution (LTE), NR introduces an additional RRC state RRC_INACTIVE to adapt to different service characteristics. The characteristics of the supported RRC states are summarized in Table 6.

[0347] Table 6

[0348]

[0349]

[0350] RRM Measurements

[0351] The UE in RRC_CONNECTED mode is configured by the network to perform measurements and report received signal measurement information to the gNB. The RRC reconfiguration message includes the following elements:

[0352] Measurement objects: A list of objects on which measurements are to be performed (with frequency / time locations and subcarrier spacings of reference signals to be measured).

[0353] Report configuration: A list of report configurations, where there can be one or more report configurations per measurement object. It includes periodic or event-driven triggers to send measurement reports, RS type (e.g., SS / PBCH block or CSI-RS), and the report format of the report (such as what information will be included, such as RSPR).

[0354] Measurement Identifiers: A list of measurement identifiers, each of which associates a measurement object with a reporting configuration. This identifies the measurement and defines the applicable measurement objects and reporting configurations.

[0355] Quantity Configuration: The quantity configuration defines the measurement filter configuration used for all event evaluations and related reporting of a measurement type.

[0356] Measurement interval: This indicates a period of time when no downlink or uplink transmission is performed. The purpose of the time interval is to enable UEs to switch radios and perform measurements from neighboring cells when they are operating on a frequency other than the serving cell.

[0357] For RRM measurements based on synchronization signals (SS), SS reference signal received power (SS-RSRP) and SS reference signal received quality (SS-RSRQ) are measured by the UE and reported to the gNB. SS-RSRP is measured based on resource elements including the secondary synchronization signal (SSS) and possibly also based on resource elements including the demodulation reference signal (DMRS) for the physical broadcast channel (PBCH). The measurement time resources for SS-RSRP are restricted to the SS / PBCH block measurement time configuration (SMTC). The UE is not expected to perform SS-RSRP outside of the SMTC, where the SMTC is configured to the UE by system information for RRC_IDLE and RRC_INACTIVE modes and by the radio resource control (RRC) for RRC_CONNECTED, and each SMTC configuration contains a window periodicity, a window duration, and a window offset. SS-RSRQ is defined as the ratio of N times SS-RSRP to the NR carrier received signal strength indicator (RSSI), where N is the number of resource blocks in the carrier RSSI measurement bandwidth that can be the same for SS-RSRP. The measurement time resource is configured by the system information of RRC_IDLE and RRC_INACTIVE and by RRC for RRC_CONNECTED. The measurement time resource configuration contains a slot level indication within the SMTC, where the indication uses a bitmap, and a symbol level indication within the configured slot, where the indication uses a starting symbol index (which is 0) and a configurable ending symbol index from the set {1, 5, 7, 11}.

[0358] The information element (IE) of "useServingCellTimingForSync" defined in "measObjectNR" from RRC signaling is used to indicate whether the time between associated cells in the target carrier is synchronized. When useServingCellTimingForSync is set to true, the UE can use the time of the serving cell to derive the SS / PBCH block index transmitted by the neighboring cell for intra-frequency measurement, while at the same time the UE can use the time of any detected cell in the target frequency layer to derive the SS / PBCH block index transmitted by the neighboring cell for inter-frequency measurement. However, there are many cases where useServingCellTimingForSync is set to false or not enabled. The UE must then decode the PBCH or identify the PBCH-DMRS sequence for SS / PBCH block index identification and time synchronization. The process of PBCH decoding or PBCH-DMRS identification consumes additional UE power and can cause measurement delays.

[0359] In addition, the duration of the SMTC window is configured only at the subframe level. The IE of ssb-ToMeasure defined in measObjectNR is used to indicate the SS / PBCH blocks to be measured within the associated SMTC window. However, SSB-ToMeasure in bitmap format cannot help the UE locate the SS / PBCH blocks that need to be measured in an asynchronous network because the time difference between the associated target cells is random and may be at the symbol level. Therefore, there are unnecessary UE measurements on both the leading and terminating boundaries within the associated SMTC window, and the UE power consumption is large due to the overhead of SS / PBCH block index identification in the asynchronous network.

[0360] In CSI-RS based RRM measurement, CSI reference signal received power (CSI-RSRP) and CSI reference signal received quality (CSI-RSRQ) are measured by the UE and reported to the gNB, where CSI-RS for RRM measurement may be transmitted periodically. CSI-RSRP is measured based on resource elements including CSI-RS, as configured by RRC for RRM measurement purposes. CSI-RSRQ is defined as the ratio of N times CSI-RSRP to CSI-RSSI, where N is the number of resource blocks in the CSI-RSSI measurement bandwidth. For CSI-RSSI, the measurement bandwidth is the same as the configured CSI-RS bandwidth, and the measurement time resources correspond to symbols containing the configured CSI-RS opportunities.

[0361] If the UE is required to perform CSI-RS measurements over multiple cell times, the UE cost will increase because CSI-RS-based measurements, unlike SS / PBCH block-based measurements, operate in the frequency domain, which involves FFT operations and requires more accurate timing.

[0362] In C-DRX mode, the aim is to keep the UE operating for the shortest possible duration (e.g., receiving PDCCH, performing time-frequency tracking, RRM measurements including RLM and neighbor cell measurements, etc.) in order to minimize UE power consumption. The UE may not be required to measure CSI-RS outside of active periods. However, when the measurement results of the serving cell are inaccurate after the UE wakes up, or when beam tracking for a neighboring cell is required, it may be beneficial for the UE to have more flexibility for mobility measurements based on the RS resources associated with C-DRX rather than being strictly restricted within the active time and active DL BWP.

[0363] UE mobility state

[0364] In the LTE system, the UE's mobility state is detected by counting the number of handovers (#HOs) over a specified time period. The number of cell changes is compared with two thresholds (N_H and N_L configured by the gNB) to determine one of three mobility states: high, medium, and normal. These states are determined as follows: #HOs > N_H means a high mobility state, N_L < #HOs < N_H means a medium mobility state, and #HOs < N_L means a normal mobility state.

[0365] Therefore, at least for asynchronous networks, the design of SS / PBCH block-based measurements needs to be refined. At least for asynchronous networks, the design of CSI-RS-based measurements also needs to be refined. Additionally, it is necessary to reduce or avoid unnecessary RRM measurements by leveraging changes in UE mobility state and channel or link conditions. Moreover, the RRM measurements in C-DRX need to be optimized.

[0366] For asynchronous networks, unless otherwise explicitly stated, the time between associated target cells to be measured per target carrier defined in measObjectNR from RRC signaling can be random at the symbol level or slot level or radio frame level. The target carrier includes ssbFrequency that indicates the frequency position of the associated SS / PBCH block to be measured defined in measObjectNR, and refFreqCSI-RS that indicates the frequency position of the CSI-RS resource to be measured defined in measObjectNR.

[0367] Example 6: Refinement of SS / PBCH-based measurements

[0368] The sixth embodiment of the present disclosure considers the improvement of intra-frequency and inter-frequency mobility measurement based on SS / PBCH. The associated mobility measurement quantity may be at least one of SS-RSRP or SS-RSRQ or SS-SINR or NR carrier RSSI, wherein each mobility measurement quantity may be applicable to beam management or L3 mobility or RLM measurement.

[0369] The set of SS / PBCH blocks that the UE is to measure within the SMTC measurement duration may be configured by the network to the UE via a bitmap (such as ssb-ToMeasure) with the aid of higher layer signaling. If not configured by a higher layer, the UE assumes that all SS / PBCH blocks are measured within the configured SMTC duration. In a synchronous network, the UE may derive the SS / PBCH block index from the serving cell when the associated configuration parameter useServingCellTimingForSync is set to true; otherwise, the UE may need to decode the PBCH or identify the PBCH-DMRS sequence for SS / PBCH block index identification and time synchronization. However, both the location and implicit indication of the SS / PBCH block index may not be appropriate for asynchronous networks when the time differences between all target measurement cells are random and unknown to the UE. In addition, the SMTC window may need to be larger in order to capture all configured SS / PBCH block instances from all associated target cells. Therefore, for UE power saving based on SS / PBCH block measurements (such as in asynchronous networks), this embodiment defines a method for locating and identifying UEs to measure SS / PBCH blocks with high accuracy and low complexity.

[0370] Fig.23 An example of one measurement occasion with an SMTC window duration of 4 ms and two target cells for SS / PBCH block based measurement according to one embodiment of the present disclosure is shown. Fig.23 The embodiments shown in the drawings are for illustration only. Other embodiments may be used without departing from the scope of the present disclosure.

[0371] Three reference numerals 2303 and 2304 indicate time offsets with respect to a reference cell (RefCell) from target cell #1 and target cell #2, respectively.Time slots with reference numerals 2301 and 2302 are SS / PBCH block burst groups from target cell #1 and target cell #2, respectively.

[0372] In a first approach, the UE may perform SS / PBCH block based measurements, where the configured measurement duration may be common for a group of cells, such as for an asynchronous network. In one example, the cells to be measured (target cells) associated with the SMTC window per target carrier may be grouped according to their time difference relative to a reference cell. The UE may be configured to perform SS / PBCH block based measurements using a configured cell group specific measurement duration with a time offset between target cells within a predefined interval.

[0373] In one example of a reference cell in the first method, the reference cell (RefCell) may be a serving cell (i.e., SpCell) for intra-frequency measurements. In another example of a reference cell in the first method, the reference cell may be one of the detected cells in the target frequency layer for inter-frequency measurements. In yet another example of a reference cell in the first method, the reference cell may be the cell with the earliest time among all target cells associated with the SMTC window, so that the time offset from other target cells will be positive relative to the RefCell.

[0374] In one example of cell group determination in the first method, the cell group identity of the target cell may be derived from the time offset in the target cell relative to the reference cell. There may be K cell groups configured by the gNB, where cell group #k (k=0, ..., K-1) contains target cells with time offsets within the same interval (such as [k*O^SMTC_granularity, (k+1)*O^SMTC_granularity]), where O^SMTC_granularity is the time offset granularity associated with the SMTC window. The cell group ID of the target cell with cell ID #i may be determined by its time offset relative to the RefCell according to Equation 1B, denoted as O_i:

[0375] CellGroup^ID_i=floor(O_i / O^SMTC_granularity)...Equation 1B

[0376] In a first method, the UE may be configured to perform SS / PBCH-based measurements limited to a measurement duration associated with a cell group (e.g., a cell group-specific measurement duration), where the measurement duration for cell group #k may be determined as a duration between a first slot index and a last slot index (respectively represented as firstSlot_k and lastSlot_k) relative to the start of the associated SMTC window duration (where k=0, ..., K). The cell group-specific measurement duration may be configured from at least one of the following options or examples.

[0377] In the first measurement configuration option (MD configuration option 1), firstSlot_k and lastSlot_k may be determined by the cell group ID (e.g., k), the granularity of the time offset (e.g., O^SMTC_granularity), and the duration of the SS / PBCH block burst group (e.g., D^SSBs). The start of the measurement duration (e.g., firstSlot_k) may be calculated according to Equation 2, and the end of the measurement duration (e.g., lastSlot_k) may be calculated accordingly according to Equation 3.

[0378] firstSlot_k=k*O^SMTC_granularity, ... Equation 2

[0379] lastSlot_k=(k+1)*O^SMTC_granularity+D^SSBs,…Equation 3

[0380] In the second measurement configuration option (MD configuration option 2), firstSlot_k can be determined according to Equation 4 by the minimum time offset between target cells within cell group #k, and lastSlot_k can be determined according to Equation 5 by the maximum time offset between target cells within cell group #k and the duration of the SS / PBCH block burst group (e.g., D^SSBs).

[0381] firstSlot_k=O^min_k,…Equation 4

[0382] lastSlot_k=O^max_k+D^SSBs,…Equation 5,

[0383] Where for CellGroup^ID_i=k, O^min_k=min{O_i} and O^max_k=max{O_i}.

[0384] Fig.24 A diagram is given of an example of measurement duration for cell group #1 according to one embodiment of the present disclosure. Fig.24 The embodiments shown in the drawings are for illustration only. Other embodiments may be used without departing from the scope of the present disclosure.

[0385] Reference numeral 2401 indicates an offset granularity of O^SMTC_granularity, reference numeral 2408 indicates the start of the associated SMTC window duration, reference numerals 2404 and 2405 are SS / PBCH blocks from two target cells having time offsets (indicated by reference numerals 2402 and 2403) within an interval of [O^SMTC_granularity, O^SMTC_granularity*2], respectively. Reference numeral 2406 indicates a measurement duration of cell group #1 configured using a first option (e.g., MD configuration option 1), and reference numeral 2407 indicates a measurement duration of cell group #1 configured based on a second option (e.g., MD configuration option 2).

[0386] Fig.25 An example process of SS / PBCH block-based measurement in an associated SMTC window when the first method in the sixth embodiment is enabled according to one embodiment of the present disclosure is shown. Fig.25 The embodiments shown in the drawings are for illustration only. Other embodiments may be used without departing from the scope of the present disclosure.

[0387] In the first method, in step 2501, the gNB may signal the UE with assistance information for configuring cell group specific and SS / PBCH block based measurements. The relevant assistance information may be provided to the UE via higher layer signaling. In step 2502, the UE performs SS / PBCH block based measurements per cell group specific measurement duration within the associated SMTC window. The assistance information from the gNB may be selected from the following examples.

[0388] In a first example of auxiliary information, the gNB may signal to the UE a list of cell groups in the associated SMTC window for each measured frequency layer, where each cell group consists of a list of cells to be measured (i.e., target cells) having time offsets within the same interval (such as calculated based on Equation 1B).

[0389] In a second example of the auxiliary information, the gNB may signal the UE with auxiliary information for configuring the cell group specific measurement duration, wherein the auxiliary information for configuring the cell group specific measurement duration may be determined based on the type of configuration option adopted.

[0390] For a sub-example, when MD configuration option 1 is adopted, the auxiliary information used to configure the cell group specific measurement duration can be the time offset granularity O^SMTC_granularity in the associated SMTC and is common to all cell groups.

[0391] For another sub-example, when MD configuration option 2 is adopted, the auxiliary information used to configure the cell group specific measurement duration can be the minimum and maximum time offsets between target cells within cell group #k and is cell group specific.

[0392] In a second method, the gNB may signal to the UE the time offset of the SS / PBCH block position per cell for SS / PBCH block based measurements associated with the SMTC window per frequency layer relative to a reference cell (RefCell). In one example of a reference cell, the reference cell (RefCell) may be a serving cell (i.e., SpCell) for intra-frequency measurements, and one of the detected cells in the target frequency layer for inter-frequency measurements. In another example of a reference cell, the reference cell may be the cell with the earliest time among all target cells associated with the SMTC window, so that the time offsets from other target cells will be positive relative to the RefCell.

[0393] In the second method, the SS / PBCH block time offset of target cell #i (represented by O^SSB_i) can be normalized using the granularity of half a time slot, so that O^SSB_i = floor(O_i / D_halfslot), where O_i is the absolute time offset between target cell #i and RefCell, and D_halfSlot is the duration of half a time slot among all associated target cells per frequency layer.

[0394] In the second method, in step 2503, it is determined that the detected SS / PBCH block has a cell that is not included in the list of the associated cell group. According to Equation 6, when the UE knows the associated SS / PBCH block time offset O^SSBs_i, the index of the detected SS / PBCH block associated with the target cell #i can be obtained from the corresponding detection time (expressed as T^detected_i) of the secondary synchronization sequence (SSS) in the detected SS / PBCH block and the reference time (expressed as T^SSB_0) of the SSS of the first SS / PBCH block from the RefCell; otherwise, the UE needs to decode the PBCH in the associated SS / PBCH to identify the SS / PBCH index. In step 2504, the UE may add a record of the time offset of the detected cell #i, which is determined by the corresponding detection time in the secondary synchronization sequence (SSS) in the block where the SS / PBCH is detected (denoted as T^detected_i) and the reference time of the SSS from the first SS / PBCH block in the RefCell (denoted as T^SSB_0), according to Equation 7.

[0395] SSBIndex_i=floor((T^detected_i-T^SSB_0) / D_halfSlot)-O^SSB_i...Equation 6

[0396] O^SSB_i=floor((T^detected_i-T^SSB_0) / D_halfSlot)-SSBIndex_i...Equation 7

[0397] In the second method, for target cells with time offset at the same level (such as O^SSB_i=j), the bitmap BM_j=[v 0 , ...v l ……v L-1 ] indicates to the UE the SS / PBCH blocks to be measured. The size of the bitmap L may be equal to the size of the SS / PBCH block burst group in the target cell associated with the SMTC window. l is equal to 1, then this indicates that the l-th SS / PBCH block of the target cell #i with time offset O^SSB_i equal to j should be measured; otherwise, if bit v in bitmap BM_j ... l is equal to 0, then this indicates that the lth SS / PBCH block of target cell #i with time offset O^SSB_i equal to j can be skipped.

[0398] Fig.26 A UE process when the second method in the sixth embodiment is enabled according to one embodiment of the present disclosure is shown. Fig.26 The embodiments shown in the drawings are for illustration only. Other embodiments may be used without departing from the scope of the present disclosure.

[0399] In step 2601, the UE receives assistance information for configuring SS / PBCH block based measurements from the gNB. In step 2602, the UE measures the SS / PBCH block locations indicated by the associated bitmap per time offset level within the configured cell specific measurement duration per SMTC time offset level. In step 2603, the UE detects the SS / PBCH block with cell ID I and the detection time of the associated SSS at T^detected_i. In step 2604, it is determined whether the UE has a recorded SS / PBCH block time offset for the detected cell. If yes, then in step 2605, the UE derives the index of the detected SS / PBCH block according to Equation 6; otherwise, in step 2606, the UE decodes the PBCH in the detected SS / PBCH block to identify the SS / PBCH index and in step 2607, adds a new record of the SS / PBCH block time offset for the detected cell according to Equation 7.

[0400] The gNB may signal to the UE assistance information for SS / PBCH block based measurements without decoding the PBCH over continuous durations. The relevant assistance information may be delivered to the UE via higher layer signaling and may be selected from the following examples.

[0401] In a first example of assistance information, the gNB may signal to the UE the SS / PBCH time offset O^SSB_i between the target cell #i and the reference cell.

[0402] In a second example of assistance information, the gNB may signal to the UE a bitmap indicating the SS / PBCH blocks for which measurements are to be made for one or more time offset levels.

[0403] In one consideration, the first method and the second method defined in the sixth embodiment may be used simultaneously. In this case, the time offset granularity (i.e., O^SMTC_granularity) in the first method is equal to the half-slot duration (i.e., D_halfSlot) in all target cells in the second method. The corresponding SS / PBCH time offset O^SSB_i and bitmap BM_j in the second method may be delivered to the UE by cell group according to equation 1B as defined in method one, rather than by cell.

[0404] Embodiment 7: Improvement of mobility measurement based on CSI-RS

[0405] The seventh embodiment of the present disclosure considers the improvement of intra-frequency and inter-frequency mobility measurement based on CSI-RS. The associated mobility measurement quantity may be CSI-RSRP or CSI-RSRQ or CSI-SINR or CSI-RSSI, wherein each mobility measurement quantity may be applicable to beam management or L3 mobility or RLM measurement.

[0406] The UE can perform periodic CSI-RS-based mobility measurements among the configured CSI-RS resources per target carrier. In the frequency domain and time domain, the CSI-RS resources to be measured are typically configured per target cell (TC). The duration of the cell-specific CSI-RS-based measurement is less than one time slot and is indicated by the first OFDM symbol through higher layer signaling. However, CSI-RS resources from different cells may have different time offsets and spread out in the time domain, such as in an asynchronous network. Then, the time slot boundaries are not aligned in the associated target cell. The UE may need to be configured with a longer measurement duration in order to withstand the time offset between target cells.

[0407] Fig. 27An example of CSI-RS resources from different target cells with random time offsets at slot level and symbol level according to one embodiment of the present disclosure is shown. Fig. 27 The embodiments shown in the drawings are for illustration only. Other embodiments may be used without departing from the scope of the present disclosure.

[0408] Reference numerals 2701, 2702, and 2703 indicate a CSI-RS resource opportunity from a reference cell (RefCell), TC#i, and TC#j, respectively. Reference numerals 2704 and 2705 indicate the slot-level time offsets of TC#i and TC#j, respectively, relative to RefCell. Reference numerals 2706 and 2707 indicate the OFDM symbol-level time offsets of TC#i and TC#j, respectively, relative to RefCell.

[0409] In the first method, a CSI-RS based measurement time configuration (CMTC) window is designed for CSI-RS based mobility measurements, for example, for use in asynchronous networks. The UE can perform CSI-RS based measurements within the configured duration limited within the CMTC window. The exact measurement duration for each target cell (TC) (i.e., the associated cell to be measured) can be determined by the configured duration of the associated CMTC window and the time offset of the target cell relative to the reference cell (RefCell).

[0410] In one example of the reference cell in the first method, the reference cell (RefCell) may be a serving cell (ie, SpCell) for intra-frequency measurement.

[0411] In another example of the reference cell in the first method, the reference cell (RefCell) may be one of the detected cells in the target frequency layer for the inter-frequency measurement.

[0412] In yet another example of the reference cell in the first approach, the reference cell may be the cell with the earliest time among all target cells associated with the CMTC window, so that the time offsets from other target cells will be positive relative to the RefCell.

[0413] Fig.28 An exemplary processing procedure at the UE when the first method in the seventh embodiment of the present disclosure is enabled is shown. Fig.28 The embodiments shown in the drawings are for illustration only. Other embodiments may be used without departing from the scope of the present disclosure.

[0414] In step 2801, the UE receives the auxiliary information for configuring the CMTC window for CSI-RS based measurements. In step 2802, the UE performs CSI-RS based measurements within the cell-specific measurement duration restricted by the associated CMTC window.

[0415] In the first method, the gNB may signal to the UE the auxiliary information used to configure the CMTC window for CSI-RS based measurements per frequency layer. The auxiliary information may be selected from the following examples.

[0416] In the first example of the auxiliary information, the gNB may signal to the UE the periodicity of the CMTC, i.e., T^CMTC. T^CMTC may be selected from a set of values such as {4 ms, 8 ms, 10 ms, 20 ms, and 40 ms}.

[0417] In the second example of the auxiliary information, the gNB may signal to the UE the list of cells to be measured (i.e., target cells) associated with the CMTC window. The associated target cells have CSI-RS resources with the same periodicity as the associated CMTC window.

[0418] In the third example of the auxiliary information, the gNB may signal to the UE the auxiliary information for configuring the duration of the CMTC (i.e., D^CMTC). The duration of the CMTC may consider the number of OFDM symbols to be measured, such that 0 < D^CMTC <= N^slot_OS, where N^slot_OS is the number of OFDM symbols per time slot among the associated target cells per frequency layer.

[0419] In the fourth example of the auxiliary information, the gNB may signal to the UE the time offset O^CMTC_i of target cell #i relative to the reference cell. The time offset O^CMTC_i of TC#i should be less than the periodicity of the CMTC, such as 0 <= O^CMTC_i < T^CMTC.

[0420] In the first method, the duration of the CSI-RS resource to be measured for target cell #i may be less than one time slot. The time slot having the CSI-RS resource to be measured for target cell #i (denoted as slotToMeasure_i) may be derived from the periodicity of the associated CMTC window and the time offset of the target cell. For example, when mod(n_slot * D^slot_duration, T^CMTC) = O^CMTC_i, slotToMeasure_i = n_slot.

[0421] In a fifth example of auxiliary information, the gNB may signal to the UE auxiliary information about the OFDM symbols with CSI-RS resources to be measured within the measurement slot (i.e., slotToMeasure_i). In one sub-example, the measurement duration of TC#i may be indicated by the first OFDM symbol to be measured (denoted as firstOS_i). In this case, the UE may perform CSI-RS based measurements in D^CMTC consecutive OFDM symbols starting from the first OFDM symbol indexed as firstOS_i. In another sub-example, the measurement duration of TC#i may be indicated by the last OFDM symbol to be measured (denoted as lastOS_i). In this case, the UE may perform CSI-RS based measurements in D^CMTC consecutive OFDM symbols ending with the last OFDM symbol indexed as lastOS_i.

[0422] In the first method, a CSI-RS based measurement time configuration (CMTC) window is designed for CSI-RS based mobility measurements, such as for use in asynchronous networks. In step 2901, the UE receives auxiliary information to configure the CMTC window for CSI-RS based measurements. In step 2902, the UE may perform CSI-RS based measurements within a configured duration limited within the CMTC window. The exact measurement duration for each target cell (TC) (i.e., the associated cell to be measured) may be determined by the configured duration of the associated CMTC window and the time offset of the target cell relative to the reference cell (RefCell).

[0423] In a second approach, the gNB may signal to the UE the measurement duration per CSI-RS resource associated with any target cell for CSI-RS based measurements, such as for use in asynchronous networks. The UE may be configured to measure multiple cells per frequency layer, where each target cell may be associated with multiple sets of CSI-RS resources with different periodicity, offset, and first OFDM symbol to be measured. The UE may base the timing of the CSI-RS resources on the timing of a reference cell (RefCell).

[0424] In one example of a reference cell in the second method, the reference cell (RefCell) may be a serving cell (i.e., SpCell) for intra-frequency measurements, and one of the detected cells in the target frequency layer for inter-frequency measurements. In another example of a reference cell in the second method, the reference cell may be one of the associated target cells for inter-frequency measurements.

[0425] In the second method, for a configured CSI-RS resource with index #j from target cell #i, the duration of the CSI resource to be measured by the UE can be signaled to the UE and is denoted as D^CSI_{i,j}. The duration D^CSI_{i,j} for each CSI-RS resource and target cell can be the number of OFDM symbols less than the number of OFDM symbols per time slot, such that 0 < D^CSI_{i,j} <= N^slot_OFDM, where N^slot_OFDM is the number of OFDM symbols per time slot among all associated target cells for each frequency layer.

[0426] Fig.29 FIG. shows a processing procedure at the UE when the second method in the seventh embodiment is enabled according to an embodiment of the present disclosure. Fig.29 The embodiments shown are for illustrative purposes only. Other embodiments may be used without departing from the scope of the present disclosure.

[0427] In step 2901, the UE receives the signaling-assisted information from the gNB for configuring CSI-RS-based measurements. In step 2902, for a CSI-RS resource set with index #j associated with target cell #i, an explicit duration D^CSI_{i,j} is signaled to the UE. For a CSI-RS resource set with index #j associated with target cell #i, in step 2903, when an explicit duration D^CSI_{i,j} is also signaled to the UE, the UE can perform CSI-RS-based measurements on D^CSI_{i,j} consecutive OFDM symbols starting from the first OFDM symbol (firstOS_{i,j}); otherwise, in step 2904, the UE can perform CSI-RS-based measurements starting from the first OFDM symbol firstOS_{i,j} until the end of the associated measurement time slot. The first OFDM symbol to be measured and the associated measurement time slot can be configured by the gNB to the UE.

[0428] Embodiment 8: Reduction of Mobility Measurements Adapted to UE Mobility or Channel Conditions

[0429] The eighth embodiment of the present disclosure contemplates reducing mobility measurements according to UE mobility or channel conditions. The associated mobility measurement quantities can be SS-RSRP or SS-RSRQ or SS-SINR or carrier RSSI for SS / PBCH block-based beam management or L3 mobility or RLM measurements, and CSI-RSRP or CSI-RSRQ or CSI-SINR or CSI-RSSI for CSI-RS-based beam management or L3 mobility or RLM measurements.

[0430] Fig.30 An exemplary processing procedure at a UE for enabling scaled mobility measurement defined in the eighth embodiment of the present disclosure is shown. Fig.30 The embodiments shown in the drawings are for illustration only. Other embodiments may be used without departing from the scope of the present disclosure.

[0431] In one method, N_MS predefined UE mobility states may be supported, such as denoted as MS_n, where n=0, ..., N_MS-1. The N_MS mobility states may be defined in ascending order. For example, when N^MS=3, the three mobility states may be: very low UE mobility, low UE mobility, and normal UE mobility.

[0432] In one example, for UE mobility state configuration, the mobility state may be determined by the number of handovers (HO) over a predefined interval T_HO. In this case, the index n increases relative to the number of HOs within the time T_HO. In another example, for UE mobility state configuration, the mobility state may be derived from the UE speed. In this case, the index n increases relative to the UE speed.

[0433] In another method, L^CC_MQ predefined channel condition change levels may be supported, such as represented as CC^MQ_l, where l=0, ..., L^CC_MQ-1. The L^CC_MQ channel condition change levels may be defined in ascending order. For example, when L^CC_MQ=3, three channel condition change levels may be: minimal channel condition change, small channel condition change, and normal channel condition change. The channel condition change level may be associated with a measurement quality MQ (such as CSI-RSRP). The channel condition change level may be derived from a change in an associated measurement quantity MQ over a time interval T^MQ.

[0434] In step 3001, the UE may periodically monitor the real-time mobility status and channel condition change level. In step 3002, the UE may trigger a request for scaled mobility measurement by reporting its mobility status or channel condition change level to the gNB. In step 3003, the gNB may signal the scaling factor and the corresponding measurement aspect to be scaled after receiving the updated mobility status and channel condition change level from the UE. In step 3004, the UE may perform scaled mobility measurement on the associated RS resources in the associated measurement aspect accordingly. The associated reference sequence (RS) resources may be SS / PBCH blocks for SS / PBCH block based measurements, and CSI-RS resources for CSI-RS based measurements in both synchronous and asynchronous networks.

[0435] The scaling factor signaled by the gNB may be selected from a predefined or configured set of values ​​of size N, such as {s 0 ,……s i ……,s N-1}, where 0 = i <=100%. For example, the candidate value set of the scaling factor may be {0%, 25%, 50%, 100%}. The gNB may signal the scaling factor to the UE based on the level of change in UE mobility state or channel conditions reported by the UE. The scaling factor may be applied to one or more measurement aspects.

[0436] One example of a measurement aspect to scale may be the number of measurement carriers, ie, N^carriers, such that N^carriers=N^carriers_0*s i , where N^carriers_0 is the total number of carriers configured for measurement.

[0437] Another example of a measurement aspect to scale may be the number of measurement cells, ie, N^cells, such that N^cells=N^cells_0*s i , where N^cells_0 is the total number of cells configured for measurement.

[0438] Another example of a measurement aspect to scale could be the periodicity of the SMTC window, such that T^SMTC=T^SMTC_0*s i , where T^SMTC_0 is the initial configuration periodicity of the associated SMTC window.

[0439] Another example of a measurement aspect to be scaled may be the bandwidth of the CSI-RS resource to be measured, ie, BW^CSI, such that BW^CSI=BW^CSI_0*s i , where BW^CSI_0 is the initial bandwidth configured for measurement per frequency layer.

[0440] Another example of a measurement aspect to be scaled may be the number of CSI-RS resources per target cell to be measured, ie, N^CSIperCell, such that N^CSIperCell=N^CSIperCell_0*s i , where N^CSIperCell_0 is the initial number of CSI-RS resources configured for each target cell.

[0441] Example 9: Optimization of RRM measurements in C-DRX mode

[0442] The ninth embodiment of the present disclosure considers optimization of mobility measurement in RRC_CONNECTED DRX (C-DRX) mode.​

[0443] In existing systems, UEs are only configured to perform CSI-RS based measurements on RB resources limited to the active time of C-DRX and within the associated DL active BWP. This may be inefficient, and the UE may not be able to report the associated measurement quantities in a timely manner due to constraints in both the time and frequency domains.

[0444] In this embodiment, a method is defined that provides more flexibility regarding mobility measurements in C-DRX mode.

[0445] Fig.31 An exemplary processing procedure at the UE when using the first method according to the ninth embodiment of the present disclosure is shown. Fig.31 The embodiments shown in the drawings are for illustration only. Other embodiments may be used without departing from the scope of the present disclosure.

[0446] In the first method, a CSI-RS resource set may be configured for mobility measurement in C-DRX mode. The associated mobility measurement quantity may be CSI-RSRP or CSI-RSRQ or CSI-SINR or CSI-RSSI for CSI-RS based beam management or L3 mobility or RLM measurement.

[0447] In step 3101, the UE receives assistance information from the gNB for configuring CSI-RS based measurements in C-DRX mode. In step 3102, the UE performs CSI-RS based measurements within the configured duration and RB resources of the CMTC window.

[0448] The time domain configuration of the first method can be determined by the CSI-RS-based measurement time configuration (CMTC) window associated with the C-DRX cycle. The CMTC of each UE can be configured by auxiliary information signaled from the gNB. The relevant auxiliary information can be delivered to the UE through higher layer signaling and used to design the CMTC including the following aspects.

[0449] In one design aspect of CMTC, the periodicity of the CMTC window (denoted as T^CMTC) can be associated with the C-DRX cycle (denoted as T^CDRX). T^CDRX can be a long DRX cycle or a short DRX cycle, such that T^CMTC=c0*T^CDRX, where c0>=1 is a positive integer.

[0450] In one example, c0 can be a fixed value predefined in the specification of system operation. In another example, c0 is semi-static and provided to the UE via higher layer signaling. In yet another example, S^CMTC can be provided to the UE via an L1 channel (such as PDCCH). In another design aspect of CMTC, a list of associated cells (i.e., target cells) to be measured is provided to the UE. The target cell can be a cell having a configured BWP that overlaps with the active DL BWP of the UE.

[0451] In another design aspect of CMTC, the time offset of the CMTC window (denoted as O^CMTC) is provided to the UE. The offset of the CMTC window can be associated with the time offset of C-DRX (denoted as O^CDRX). In one example, O^CMTC = O^CDRX + O_gap, where O_gap is constant.

[0452] In another design aspect of CMTC, the duration of the CMTC window (denoted as D^CMTC) is provided to the UE. The duration of the CMTC window can be associated with the on-duration of CDRX (denoted as D^CDRX). In one example, D^CMTC = c1 * D^CDRX, where c1 is a fraction such that 0 < c1 < 1, for example, c1 = 0.1.

[0453] The frequency domain configuration of the first method can be configured based on the auxiliary information from the gNB. The relevant information can be provided to the UE via higher layer signaling and used to configure CSI-RS-based measurements in the frequency domain including the following aspects.

[0454] In one design aspect of the frequency domain configuration, the target carrier is provided to the UE. The UE can be configured to measure carriers within the range relative to the DL active BWP. Denote the center of the carrier as RB^targetCarrier. When abs(RB^targetCarrier - (startRB^BWP + N^BWP_RBs)) <= Q_RBs, the target carrier can be selected for the UE to measure, where Q_RBs is constant, and startRB^BWP and N^BWP_RBs are the start RB and bandwidth of the associated DL BWP respectively.

[0455] In another design aspect of the frequency domain configuration, the bandwidth of the CSI-RS resource to be measured for target cell #i (denoted as BW^CSI_i) is provided to the UE. BW^CSI_i can be associated with the bandwidth (N^BWP_RBs) of the UE's active DL BWP. In one example, BW^CSI_i = N^BWP_RBs * c3, where c3 is a fraction such that 0 < c3 < 1, for example, c3 = 0.25.

[0456] In the second method, a sequence-based wake-up signal (WUS) can be used to support mobility measurements outside of active time in C-DRX mode. The associated mobility measurement quantity can be WUS-RSRP or WUS-RSRQ or WUS-SINR or WUS0-RSSI for beam management or L3 mobility or RLM measurement based on WUS-RS.

[0457] Fig.32 A flowchart of a method 3200 for operating a UE according to an embodiment of the present disclosure is shown. Fig.32 The embodiment of method 3200 shown in FIG. 3 is for illustration only. Fig.32 The scope of the present disclosure is not limited to any particular implementation.The method 3200 may be performed by a UE, such as UE 116 or any other UE discussed herein.

[0458] The method 3200 begins with step 3201, where the UE 116 receives an adaptation request (AR) from a base station in a physical downlink control channel (PDCCH) via a downlink control information (DCI) format. For example, in step 3201, a first DCI format may schedule reception of a first physical downlink shared channel (PDSCH), and a second DCI format may schedule reception of a second PDSCH, wherein each of a first state and a second state may be a value of a minimum time offset between a last symbol of a DCI format for scheduling PDSCH reception and a first symbol of PDSCH reception, and a value of the first state may be greater than a value of the second state.

[0459] For another example, in step 3201, the first DCI format may schedule the reception of a first channel state information reference signal (CSI-RS), and the second DCI format may schedule the reception of a second CSI-RS, wherein each of the first state and the second state is a value of a minimum time offset between a last symbol received by the DCI format for scheduling CSI-RS reception and a first symbol received by the CSI-RS, and the value of the first state may be greater than the value of the second state.

[0460] For another example, in step 3201, a first DCI format may schedule reception of a first physical downlink shared channel (PDSCH), and a second DCI format may schedule reception of a second PDSCH, wherein each of the first state and the second state may be a value of the number of layers associated with multiple-input multiple-output (MIMO) for PDSCH reception, and the value of the first state may be greater than the value of the second state.

[0461] For another example, each of the first state and the second state is associated with PDCCH monitoring of a DCI format, wherein the first state is to skip PDCCH monitoring for a first DCI format, and the second state is to skip PDCCH monitoring for a second DCI format. In one option, PDCCH monitoring is skipped within a certain number of discontinuous reception (DRX) cycles.

[0462] For another example, the UE may also transmit assistance information. The assistance information includes one or more configurations for the first state, and the assistance information is provided by a medium access control (MAC) control element (CE).

[0463] In step 3203, the UE 116 then configures the transceiver to operate in a first state associated with reception of a first DCI format in a first search space set in response to the AR reception result.

[0464] Thereafter, in step 3203, the UE 116 configures the transceiver to operate in a second state associated with reception of a second DCI format in a second search space set.

[0465] BS 102 may perform a complementary process such that BS 102 transmits an adaptation request (AR) in a physical downlink control channel (PDCCH) via a downlink control information (DCI) format, and depending on the AR transmission, the BS operates in a first state associated with transmission of a first DCI format in a first search space set, and

[0466] The BS operates in a second state associated with transmission of a second DCI format in a second search space set.

[0467] To assist the patent office and any reader granting any patent rights to this application in interpreting the appended claims, applicants wish to note that applicants do not intend for any of the appended claims or claim elements to invoke 35 USC § 112(f) unless the words "means for" or "step for" are explicitly used in a particular claim. The use of any other terms (including, but not limited to, "mechanism", "module", "means", "unit", "component", "element", "member", "device", "machine", "system", "processor", or "controller") within the claims is understood by applicants to refer to structures understood by those skilled in the relevant art and is not intended to invoke 35 USC § 112(f).

[0468] Although the present disclosure has been described with exemplary embodiments, various changes and modifications may be suggested to one skilled in the art. The present disclosure is intended to encompass such changes and modifications as fall within the scope of the appended claims.

Claims

1. A terminal in a wireless communication system, the terminal comprising: Transceiver; as well as at least one processor, the at least one processor being configured to: receiving, via the transceiver, a downlink control information DCI format from a base station in a physical downlink control channel PDCCH, the DCI format comprising information for determining at least one of a first minimum time slot offset for an active downlink bandwidth part BWP or a second minimum time slot offset for an active uplink BWP; determining at least one value of the at least one of the first minimum slot offset or the second minimum slot offset based on the information; as well as applying the at least one value of the at least one of the first minislot offset or the second minislot offset after a predetermined application delay, Wherein, it is not expected to schedule another DCI format before the predetermined application delay, the another DCI format having information indicating another change to the first minislot offset or the second minislot offset.

2. The terminal according to claim 1, wherein: The at least one processor is configured to: In the case where the DCI format schedules reception of a physical downlink shared channel PDSCH, receiving the PDSCH from the base station via the transceiver, wherein a time between ending reception of the PDCCH and starting reception of the PDSCH is not less than a value of the first minimum time slot offset, or In a case where the DCI format schedules the transmission of a physical uplink shared channel PUSCH, the PUSCH is transmitted to the base station via the transceiver, wherein a time between the end of receiving the PDCCH and the start of transmitting the PUSCH is not less than a value of the second minimum time slot offset, and The minimum time slot offset of the non-periodic channel state information reference signal CSI-RS is the same as the first minimum time slot offset used for the PDSCH reception.

3. The terminal according to claim 1, wherein: The at least one processor is configured to send, via the transceiver, to the base station auxiliary information regarding at least one of a preferred configuration parameter of discontinuous reception (DRX), a preferred maximum number of multiple-input multiple-output (MIMO) layers, and a preferred value of a minimum scheduling offset.

4. The terminal according to claim 1, wherein: The DCI format also includes a BWP index, and Wherein, the at least one processor is further configured to: Switch to the BWP with the BWP index.

5. A base station in a wireless communication system, the base station comprising: Transceiver; as well as at least one processor, the at least one processor being configured to: sending a downlink control information DCI format via the transceiver to the terminal in a physical downlink control channel PDCCH, the DCI format comprising information for determining at least one of a first minimum time slot offset for an active downlink bandwidth part BWP or a second minimum time slot offset for an active uplink bandwidth part BWP, applying at least one value of the at least one of the first minimum slot offset or the second minimum slot offset after a predetermined application delay, the at least one value of the at least one of the first minimum slot offset or the second minimum slot offset being determined based on the information, Wherein, it is not expected to schedule another DCI format before the predetermined application delay, the another DCI format having information indicating another change to the first minislot offset or the second minislot offset.

6. The base station according to claim 5, wherein: The at least one processor is configured to: In the case where the DCI format schedules the transmission of a physical downlink shared channel PDSCH, the PDSCH is transmitted to the terminal via the transceiver, wherein the time between the end of transmitting the PDCCH and the start of transmitting the PDSCH is not less than the value of the first minimum time slot offset, or In a case where the DCI format schedules reception of a physical uplink shared channel (PUSCH), receiving the PUSCH from the terminal via the transceiver, wherein a time between ending transmission of the PDCCH and starting reception of the PUSCH is not less than a value of the second minimum time slot offset, and The minimum time slot offset of the non-periodic channel state information reference signal CSI-RS is the same as the first minimum time slot offset used for the PDSCH transmission.

7. The base station according to claim 5, wherein: The at least one processor is configured to receive, from the terminal via the transceiver, auxiliary information regarding at least one of a preferred configuration parameter of discontinuous reception (DRX), a preferred maximum number of multiple-input multiple-output (MIMO) layers, and a preferred value of a minimum scheduling offset.

8. The base station according to claim 5, wherein: The DCI format also includes a BWP index, and the BWP index is used to switch to a BWP having the BWP index.

9. A method performed by a terminal in a wireless communication system, the method comprising: receiving a downlink control information DCI format from a base station in a physical downlink control channel PDCCH, the DCI format comprising information for determining at least one of a first minimum time slot offset for an active downlink bandwidth part BWP or a second minimum time slot offset for an active uplink bandwidth part BWP; determining at least one value of the at least one of the first minimum slot offset or the second minimum slot offset based on the information; as well as applying the at least one value of the at least one of the first minislot offset or the second minislot offset after a predetermined application delay, Wherein, it is not expected to schedule another DCI format before the predetermined application delay, the another DCI format having information indicating another change to the first minislot offset or the second minislot offset.

10. The method of claim 9, further comprising: In the case where the DCI format schedules reception of a physical downlink shared channel PDSCH, receiving the PDSCH from the base station, wherein a time between the end of receiving the PDCCH and the start of receiving the PDSCH is not less than a value of the first minimum time slot offset, or In a case where the DCI format schedules the transmission of a physical uplink shared channel PUSCH, transmitting the PUSCH to the base station, wherein a time between the end of receiving the PDCCH and the start of transmitting the PUSCH is not less than a value of the second minimum time slot offset, and The minimum time slot offset of the non-periodic channel state information reference signal CSI-RS is the same as the first minimum time slot offset used for the PDSCH reception.

11. The method of claim 9, further comprising: Auxiliary information related to at least one of a preferred configuration parameter of discontinuous reception (DRX), a preferred maximum number of multiple-input multiple-output (MIMO) layers, and a preferred value of a minimum scheduling offset is sent to the base station.

12. The method of claim 9, wherein: The DCI information also includes a BWP index, and Wherein, the method further comprises: Switch to the BWP with the BWP index.

13. A method performed by a base station in a wireless communication system, the method comprising: Sending a downlink control information DCI format to the terminal in a physical downlink control channel PDCCH, the DCI format comprising information for determining at least one of a first minimum time slot offset for an active downlink bandwidth part BWP or a second minimum time slot offset for an active uplink bandwidth part BWP, applying at least one value of the at least one of the first minimum slot offset or the second minimum slot offset after a predetermined application delay, the at least one value of the at least one of the first minimum slot offset or the second minimum slot offset being determined based on the information, Wherein, it is not expected to schedule another DCI format before the predetermined application delay, the another DCI format having information indicating another change to the first minislot offset or the second minislot offset.

14. The method of claim 13, further comprising: In the case where the DCI format schedules the transmission of a physical downlink shared channel PDSCH, the PDSCH is transmitted to the terminal, wherein the time between the end of transmitting the PDCCH and the start of transmitting the PDSCH is not less than the value of the first minimum time slot offset, or In a case where the DCI format schedules reception of a physical uplink shared channel (PUSCH), the PUSCH is received from the terminal, wherein a time between the end of sending the PDCCH and the start of receiving the PUSCH is not less than a value of the second minimum time slot offset.

15. The method of claim 13, further comprising: receiving auxiliary information related to at least one of a preferred configuration parameter of discontinuous reception (DRX), a preferred maximum number of multiple-input multiple-output (MIMO) layers, and a preferred value of a minimum scheduling offset from the terminal, The minimum time slot offset of the aperiodic channel state information reference signal CSI-RS is the same as the first minimum time slot offset used for PDSCH transmission, and The DCI format further includes a BWP index, and the BWP index is used to switch to a BWP having the BWP index.

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