CN116889052A - Method and apparatus for physical downlink control channel monitoring per multislot - Google Patents

Abstract

The present disclosure relates to 5G or 6G communication systems for supporting higher data transmission rates. In accordance with embodiments of the present disclosure, methods and apparatus for Physical Downlink Control Channel (PDCCH) monitoring per multislot are provided.

Description

Method and apparatus for physical downlink control channel monitoring per multislot

Technical Field

The present disclosure relates generally to wireless communication systems, and more particularly, to methods and apparatus for Physical Downlink Control Channel (PDCCH) monitoring per multislot.

Background

The 5G mobile communication technology defines a wide frequency band, enabling high transmission rates and new services, and can be implemented not only in a "below 6 GHz" band such as 3.5GHz, but also in a "above 6 GHz" band called millimeter wave (mmWave) including 28GHz and 39 GHz. Further, in order to achieve a transmission rate 50 times faster than that of the 5G mobile communication technology and an ultra-low delay of one tenth of that of the 5G mobile communication technology, it has been considered to implement the 6G mobile communication technology (referred to as transcendental 5G system) in a terahertz band (e.g., 95GHz to 3THz band).

In the early stages of the development of 5G mobile communication technology, in order to support services and meet performance requirements related to enhanced mobile broadband (embbb), ultra-reliable low-delay communication (URLLC), and large-scale machine type communication (mctc), there have been ongoing standardization regarding beamforming and massive MIMO for alleviating radio wave path loss in millimeter waves and increasing radio wave transmission distances, support dynamic operation of a parameter set (e.g., operating a plurality of subcarrier intervals) and a slot format for effectively utilizing millimeter wave resources, initial access techniques for supporting multi-beam transmission and broadband, definition and operation of BWP (bandwidth part), new channel coding methods such as LDPC (low density parity check) codes for mass data transmission and polar codes for highly reliable transmission of control information, L2 preprocessing, and network slicing for providing a dedicated network dedicated to a specific service.

Currently, considering services that the 5G mobile communication technology will support, discussions about improvement and performance enhancement of the initial 5G mobile communication technology are underway, and there has been physical layer standardization about technologies such as V2X (vehicle-to-everything) for assisting driving determination of an autonomous vehicle based on information about the position and state of the vehicle transmitted by the vehicle, NR-U (new radio unlicensed) aimed at system operation conforming to various regulatory-related requirements in unlicensed bands, NR UE power saving as a non-terrestrial network (NTN) for providing covered UE-satellite direct communication in an area where communication with a terrestrial network is unavailable, and positioning.

Furthermore, there is ongoing standardization in terms of air interface architecture/protocols regarding technologies such as industrial internet of things (IIoT) for supporting new services through interworking and convergence with other industries, IAB (integrated access and backhaul) for providing nodes for network service area extension by supporting wireless backhaul links and access links in an integrated manner, mobility enhancements including conditional handover and DAPS (dual active protocol stack) handover, and two-step random access (2-step RACH) for simplifying random access procedures. There is ongoing standardization of system architecture/protocol aspects regarding 5G baseline architecture (e.g., service-based architecture or service-based interface) for combining Network Function Virtualization (NFV) and Software Defined Network (SDN) technologies and Mobile Edge Computing (MEC) for receiving services based on UE location.

With commercialization of the 5G mobile communication system, exponentially growing connection devices will be connected to the communication network, and thus, it is expected that enhanced functions and performance of the 5G mobile communication system and integrated operation of the connection devices will be necessary. For this reason, new researches related to augmented reality (XR) for effectively supporting AR (augmented reality), VR (virtual reality), MR (mixed reality), etc., improving 5G performance and reducing complexity by using Artificial Intelligence (AI) and Machine Learning (ML), AI service support, metauniverse service support, and unmanned aerial vehicle communication have been planned.

Further, such development of the 5G mobile communication system will be used as a basis for developing not only new waveforms for providing terahertz band coverage of the 6G mobile communication technology, multi-antenna transmission technologies such as full-dimensional MIMO (FD-MIMO), array antennas and massive antennas, metamaterial-based lenses and antennas for improving terahertz band signal coverage, high-dimensional spatial multiplexing technology using OAM (orbital angular momentum) and RIS (reconfigurable intelligent surface), full duplex technology for improving frequency efficiency of the 6G mobile communication technology and improving system network, AI-based communication technology for realizing system optimization by utilizing satellites and AI (artificial intelligence) from the design stage and internalizing end-to-end AI support functions, and next generation distributed computing technology for realizing a complex degree of service exceeding the UE operation capability limit by utilizing ultra-high performance communication and computing resources.

5G or NR mobile communications have recently focused more and more power from technical activity of various candidate technologies in the global industry and academia. Candidate enablers for 5G/NR mobile communications include large-scale antenna technology, ranging from conventional cellular frequency bands to high frequencies, to provide beamforming gain and support increased capacity, new waveforms (e.g., new Radio Access Technologies (RATs)) to flexibly accommodate various services/applications with different requirements, new multiple access schemes to support large-scale connections, etc.

Disclosure of Invention

Technical problem

As communication systems evolve, physical downlink control channel monitoring per multislot is required.

Problem solution

In one embodiment, a User Equipment (UE) is provided. The UE includes a processor configured to determine a combination (X, Y) of consecutive time slots. X and Y are positive integers, wherein Y<X is a metal alloy. The UE also includes a transceiver operably coupled to the processor. The transceiver is configured to receive a signal having a first subcarrier spacing (SCS) configuration mu in Y of the X time slots ₁ Is allocated to the first PDCCH of (a). From the number n on the first cell, X time slots _start Is started. In this context, wherein n is _f Is the frame number, and->Is to configure mu for the first SCS ₁ Is a number of slots per frame.

In another embodiment, a Base Station (BS) is provided. The BS includes a processor configured to determine a combination (X, Y) of consecutive time slots. X and Y are positive integers, wherein Y<X is a metal alloy. The BS also includes a transceiver operably coupled to the processor. The transceiver is configured to transmit the first SCS configuration μ in Y of the X slots ₁ Is allocated to the first PDCCH of (a). From the number n on the first cell, X time slots _start Is started. In this context,wherein n is _f Is the frame number, and- >Is to configure mu for the first SCS ₁ Is a number of slots per frame.

In yet another embodiment, a method is provided. The method includes determining a combination (X, Y) of consecutive time slots, where X and Y are positive integers, Y<X, and receiving a first SCS configuration mu in Y time slots of the X time slots ₁ Is allocated to the first PDCCH of (a). From the number n on the first cell, X time slots _start Is started. In this context,wherein n is _f Is the frame number, and->Is to configure mu for the first SCS ₁ Is a number of slots per frame.

Other technical features may be readily apparent to one skilled in the art from the following figures, descriptions, and claims.

Advantageous effects of the invention

In accordance with embodiments of the present disclosure, methods and apparatus for physical downlink control channel monitoring per multislot are provided.

Drawings

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

fig. 1 illustrates an example wireless network according to an embodiment of the disclosure;

fig. 2 illustrates an example BS according to an embodiment of the present disclosure;

fig. 3 illustrates an example UE in accordance with an embodiment of the present disclosure;

fig. 4 illustrates an example wireless transmit path according to an embodiment of the present disclosure;

Fig. 5 illustrates an example wireless receive path according to an embodiment of the disclosure;

fig. 6 illustrates an example method for determining UE procedures for per multislot PDCCH monitoring for Carrier Aggregation (CA) according to an embodiment of this disclosure; and

fig. 7 illustrates an example method for a UE procedure for PDCCH allocation or dropping based on PDCCH monitoring capabilities per multiple slots according to an embodiment of the present disclosure;

fig. 8 illustrates a structure of a UE according to an embodiment of the present disclosure; and

fig. 9 illustrates a structure of a Base Station (BS) according to an embodiment of the present disclosure.

Detailed Description

Before proceeding with the detailed description that follows, it may be advantageous to set forth definitions of certain words and phrases used in this patent document. The term "couple" and its derivatives refer to any direct or indirect communication between two or more elements, whether or not those elements are in physical contact with one another. The terms "transmit," "receive," and "communicate," and derivatives thereof, include direct and indirect communication. The terms "include" and "comprise," as well as derivatives thereof, mean inclusion without limitation. The term "or" is inclusive, meaning and/or. The phrase "associated with … …" and its derivatives refer to include, be included in, interconnect with … …, contain, be included in, connect to or connect with … …, couple to or couple with … …, be in communication, cooperate, interleave, juxtapose, be proximate to, be incorporated into or with … …, have attributes, have relationship with … …, or have a relationship, or the like. The term "controller" refers to any device, system, or portion thereof that controls at least one operation. Such a controller may be implemented in hardware or a combination of hardware and software and/or firmware. The functionality associated with any particular controller may be centralized or distributed, whether locally or remotely. When used with a list of items, the phrase "at least one" means that different combinations of one or more of the listed items can be used, and that only one item in the list may be required. For example, "at least one of A, B and C" includes any combination of: A. b, C, A and B, A and C, B and C, and a and B and C.

Furthermore, the various functions described below may be implemented or supported by one or more computer programs, each of which is formed from 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, sets of instructions, procedures, functions, objects, classes, instances, related data, or a portion thereof adapted for implementation in 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 capable of being accessed by a computer, such as Read Only Memory (ROM), random Access Memory (RAM), a hard disk drive, a Compact Disc (CD), a Digital Video Disc (DVD), or any other type of memory. "non-transitory" computer-readable media do not include wired, wireless, optical, or other communication links that transmit transitory electrical or other signals. Non-transitory computer readable media include media that can permanently store data and media that can store data and be later rewritten, such as rewritable optical disks or erasable storage devices.

Other definitions for certain 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.

Figures 1 through 9, discussed below, and the various embodiments used to describe the principles of the present disclosure in this patent document are by way of illustration only and should not be construed in any way to limit the scope of the disclosure. Those skilled in the art will appreciate that the principles of the present disclosure may be implemented in any suitably arranged system or device.

The following documents and standard descriptions are incorporated by reference into the present disclosure as if fully set forth herein: [1]3GPP TS 38.211v16.4.0, "NR; physical channel and modulation "; [2]3GPP TS 38.212v16.4.0, "NR; multiplexing and channel coding "; [3]3GPP TS 38.213v16.0.0, "NR, physical layer procedure for control"; [4]3GPP TS 38.214v16.0.0, "NR; physical layer procedure for data "; [5]3GPP TS 38.331v16.2.0, "NR; radio Resource Control (RRC) protocol specification "; [6]3GPP TS 38.321v16.1.0, "NR; medium Access Control (MAC) protocol specification).

In order to meet the increasing demand for wireless data services since the deployment of fourth generation (4G) communication systems and to realize various vertical applications, 5 fifth generation (5G) or former 5G/NR communication systems have been developed and deployed. Thus, a 5G or former 5G communication system is also referred to as a "beyond 4G network" or a "Long Term Evolution (LTE) after" system.

A 5G communication system is considered to be implemented in a higher frequency (mmWave) band (e.g., 28GHz or 60GHz band) in order to achieve a higher data rate, or in a lower frequency band (such as 6 GHz) in order to achieve robust coverage and mobility support. In order to reduce propagation loss of radio waves and increase transmission distance, beamforming, massive Multiple Input Multiple Output (MIMO), full-dimensional MIMO (FD-MIMO), array antennas, analog beamforming, massive antenna techniques are discussed in 5G communication systems.

Further, in the 5G communication system, development of system network improvement is underway based on advanced small cells, cloud Radio Access Networks (RANs), ultra dense networks, device-to-device (D2D) communication, wireless backhaul, mobile networks, cooperative communication, coordinated multipoint (CoMP), reception-side interference cancellation, and the like.

The discussion of the 5G system and the frequency bands associated therewith is for reference as certain embodiments of the present disclosure may be implemented in a 5G system. However, the present disclosure is not limited to 5G systems or frequency bands associated therewith, and embodiments of the present disclosure may be used in connection with any frequency band. For example, aspects of the present disclosure may also be applied to 5G communication systems, 6G, or even higher version deployments that may use terahertz (THz) frequency bands.

Depending on the network type, the term 'base station' (BS) may refer to any component (or collection of components) configured to provide wireless access to the network, such as a Transmission Point (TP), a Transmission Reception Point (TRP), an enhanced base station (eNodeB or eNB), a gNB, a macrocell, a femtocell, a WiFi Access Point (AP), a satellite, or other wireless-enabled device. The base station may provide wireless access according to one or more wireless communication protocols (e.g., 5G 3GPP new radio interface/access (NR), LTE advanced (LTE-A), high Speed Packet Access (HSPA), wi-Fi 802.11a/b/g/n/ac, etc.). The terms 'BS', 'gNB' and 'TRP' may be used interchangeably in this disclosure to refer to network infrastructure components that provide wireless access to remote terminals. Further, the term 'user equipment' (UE) may refer to any component, such as a mobile station, subscriber station, remote terminal, wireless terminal, receiving point, vehicle, or user equipment, depending on the network type. For example, the UE may be a mobile phone, a smart phone, a monitoring device, an alarm device, a fleet management device, an asset tracking device, an automobile, a desktop computer, an entertainment device, an infotainment device, a vending machine, an electricity meter, a water meter, a gas meter, a security device, a sensor device, an appliance, and the like.

Fig. 1-3 below describe various embodiments implemented in a wireless communication system using Orthogonal Frequency Division Multiplexing (OFDM) or Orthogonal Frequency Division Multiple Access (OFDMA) communication techniques. The descriptions of fig. 1-3 are not meant to imply physical or architectural limitations with respect to the manner in which different embodiments may be implemented. The various embodiments of the present disclosure may be implemented in any suitably arranged communication system.

Fig. 1 illustrates an example wireless network 100 according to an embodiment of this disclosure. The embodiment of the wireless network 100 shown in fig. 1 is for illustration only. Other embodiments of wireless network 100 may be used without departing from the scope of this disclosure.

As shown in fig. 1, wireless network 100 includes base stations BS101 (e.g., gNB), BS102, and BS103.BS101 communicates with BS102 and BS103.BS101 is also in communication with at least one network 130, such as the internet, a private Internet Protocol (IP) network, or other data network.

BS102 provides wireless broadband access to network 130 for a first plurality of User Equipment (UEs) within coverage area 120 of BS 102. The first plurality of UEs includes UE 111, which may be located in a small enterprise; UE 112, which may be located in enterprise (E); UE 113, which may be located in a WiFi Hotspot (HS); UE 114, which may be located in a first home (R); a UE 115, which may be located in a second home (R); and UE 116, UE 116 may be a mobile device (M) such as a cellular telephone, wireless laptop, wireless PDA, or the like. BS103 provides wireless broadband access to network 130 for a second plurality of UEs within coverage area 125 of BS103. The second plurality of UEs includes UE 115 and UE 116. In certain embodiments, one or more of the BSs 101-103 may communicate with each other and with the UEs 111-116 using 5G/NR, long Term Evolution (LTE), long term evolution-advanced (LTE-A), wiMAX, wiFi, or other wireless communication technology.

The dashed lines illustrate the general extent of coverage areas 120 and 125, which are shown as approximately circular for purposes of illustration and explanation only. It should be clearly understood that the coverage areas associated with the BS, such as coverage areas 120 and 125, may have other shapes, including irregular shapes, depending on the configuration of the BS and the variations in the radio environment associated with the natural and man-made obstructions.

As described in more detail below, one or more of UEs 111-116 may include circuitry, procedures, or a combination thereof for physical downlink control channel monitoring per multislot. In certain embodiments, one or more of the BSs 101-103 comprise circuitry, procedures, or a combination thereof for physical downlink control channel monitoring per multislot.

Although fig. 1 shows one example of a wireless network, various changes may be made to fig. 1. For example, the wireless network may include any number of BSs and any number of UEs in any suitable arrangement. Further, BS101 may communicate directly with any number of UEs and provide these UEs with wireless broadband access to network 130. Similarly, each BS102-103 may communicate directly with network 130 and provide UEs with direct wireless broadband access to network 130. In addition, BSs 101, 102, and/or 103 may provide access to other or additional external networks, such as external telephone networks or other types of data networks.

Fig. 2 illustrates an example BS102 according to an embodiment of the disclosure. The embodiment of BS102 shown in fig. 2 is for illustration only, and BSs 101 and 103 of fig. 1 may have the same or similar configurations. However, there are a variety of configurations of BSs, and fig. 2 does not limit the scope of the present disclosure to any particular implementation of a BS.

As shown in fig. 2, BS102 includes a plurality of antennas 205a-205n, a plurality of Radio Frequency (RF) transceivers 210a-210n, transmit (TX) processing circuitry 215, and Receive (RX) processing circuitry 220.BS102 also includes a controller/processor 225, memory 230, and a backhaul or network interface 235.

RF transceivers 210a-210n receive incoming RF signals from antennas 205a-205n, such as signals transmitted by UEs in wireless network 100. The RF transceivers 210a-210n down-convert the incoming RF signals to generate IF or baseband signals. The IF or baseband signal is sent to RX processing circuit 220, and RX processing circuit 220 generates a processed baseband signal by filtering, decoding, and/or digitizing the baseband or IF signal. The RX processing circuit 220 sends the processed baseband signals to a controller/processor 225 for further processing.

TX processing circuitry 215 receives analog or digital data (such as voice data, network data, email, or interactive video game data) from controller/processor 225. TX processing circuitry 215 encodes, multiplexes, and/or digitizes the outgoing baseband data to generate a processed baseband or IF signal. RF transceivers 210a-210n receive outgoing processed baseband or IF signals from TX processing circuitry 215 and up-convert the baseband or IF signals to RF signals for transmission via antennas 205a-205 n.

Controller/processor 225 may include one or more processors or other processing devices that control the overall operation of BS 102. For example, controller/processor 225 may control the reception of UL channel signals and the transmission of DL channel signals by RF transceivers 210a-210n, RX processing circuitry 220, and TX processing circuitry 215 according to well-known principles. The controller/processor 225 may also support additional functions, such as higher-level wireless communication functions. For example, controller/processor 225 may support physical downlink control channel monitoring per multislot. The controller/processor 225 may also support a Blind Interference Sensing (BIS) process such as that performed by a BIS algorithm and decode the received signal minus the interfering signal. Controller/processor 225 may support any of a variety of other functions in BS 102. In certain embodiments, controller/processor 225 comprises at least one microprocessor or microcontroller.

The controller/processor 225 is also capable of executing programs and other processes residing in memory 230, such as an OS. Controller/processor 225 may move data into and out of memory 230 as needed to perform the process. In certain embodiments, the controller/processor 225 supports communication between entities such as network real-time communications (RTC). In some embodiments, controller/processor 225 supports physical downlink control channel monitoring per multislot. For example, the controller/processor 225 may move data into or out of the memory 230 depending on the process being performed.

The controller/processor 225 is also coupled to a backhaul or network interface 235. Backhaul or network interface 235 allows BS102 to communicate with other devices or systems through a backhaul connection or network. The network interface 235 may support communication via any suitable wired or wireless connection. For example, when BS102 is implemented as part of a cellular communication system (such as a 5G/NR, LTE, or LTE-a enabled cellular communication system), network interface 235 may allow BS102 to communicate with other BSs over a wired or wireless backhaul connection. When BS102 is implemented as an access point, network interface 235 may allow BS102 to communicate with a larger network, such as the internet, through a wired or wireless local area network, or through a wired or wireless connection. The network interface 235 includes any suitable structure that supports communication over a wired or wireless connection, such as an ethernet or RF transceiver.

Memory 230 is coupled to controller/processor 225. A portion of memory 230 may include RAM and another portion of memory 230 may include flash memory or other ROM.

Although fig. 2 shows one example of BS102, various changes may be made to fig. 2. For example, BS102 may include any number of each of the components shown in fig. 2. As a particular example, an access point may include multiple network interfaces 235 and the controller/processor 225 may support routing functions to route data between different network addresses. As another specific example, BS102 may include multiple instances of each (e.g., one for each RF transceiver) although shown as including a single instance of TX processing circuitry 215 and a single instance of RX processing circuitry 220. Furthermore, the various components in fig. 2 may be combined, further subdivided, or omitted, and additional components may be added according to particular needs.

Fig. 3 illustrates an example UE 116 according to an embodiment of this disclosure. The embodiment of UE 116 shown in fig. 3 is for illustration only and UEs 111-115 of fig. 1 may have the same or similar configuration. However, there are a variety of configurations for the UE, and fig. 3 does not limit the scope of the present disclosure to any particular implementation of the UE.

As shown in fig. 3, UE 116 includes an antenna 305, a Radio Frequency (RF) transceiver 310, TX processing circuitry 315, a microphone 320, and Receive (RX) processing circuitry 325.UE 116 also includes speaker 330, processor 340, input/output (I/O) Interface (IF) 345, input device 350, display 355, and memory 360. Memory 360 includes an Operating System (OS) 361 and one or more applications 362.

The RF transceiver 310 receives an incoming RF signal transmitted by a BS of the wireless network 100 from the antenna 305. The RF transceiver 310 down-converts the incoming RF signal to generate an Intermediate Frequency (IF) or baseband signal. The IF or baseband signal is sent to RX processing circuit 325, and RX processing circuit 325 generates a processed baseband signal by filtering, decoding, and/or digitizing the baseband or IF signal. RX processing circuit 325 sends the processed baseband signal to speaker 330 (such as for voice data) or processor 340 for further processing (such as for web-browsing data).

TX processing circuitry 315 receives analog or digital voice data from microphone 320 or other outgoing baseband data (such as network data, email, or interactive video game data) from processor 340. TX processing circuitry 315 encodes, multiplexes, and/or digitizes the outgoing baseband data to generate a processed baseband or IF signal. RF transceiver 310 receives the output processed baseband or IF signal from TX processing circuitry 315 and up-converts the baseband or IF signal to an RF signal, which is transmitted via antenna 305.

Processor 340 may include one or more processors or other processing devices and execute OS 361 stored in memory 360 to control the overall operation of UE 116. For example, processor 340 may control the reception of DL channel signals and the transmission of UL channel signals by RF transceiver 310, RX processing circuit 325, and TX processing circuit 315 in accordance with well-known principles. In certain embodiments, processor 340 comprises at least one microprocessor or microcontroller.

Processor 340 is also capable of executing other processes and programs resident in memory 360, such as processes for beam management. Processor 340 may move data into and out of memory 360 as needed to perform the process. In certain embodiments, the processor 340 is configured to execute the application 362 based on the OS 361 or in response to a signal received from a BS or operator. Processor 340 is also coupled to I/O interface 345, I/O interface 345 providing UE 116 with the ability to connect to other devices, such as laptop computers and handheld computers. I/O interface 345 is the communication path between these accessories and processor 340.

Processor 340 is also coupled to input device 350. An operator of UE 116 may input data into UE 116 using input device 350. The input device 350 may be a keyboard, touch screen, mouse, trackball, voice input, or other device capable of functioning as a user interface to allow a user to interact with the UE 116. For example, the input device 350 may include a voice recognition process to allow a user to input voice commands. In another example, the input device 350 may include a touch panel, (digital) pen sensor, key, or ultrasonic input device. The touch panel may recognize a touch input in at least one scheme (such as a capacitive scheme, a pressure sensitive scheme, an infrared scheme, or an ultrasonic scheme), for example.

Processor 340 is also coupled to a display 355. Display 355 may be a liquid crystal display, a light emitting diode display, or other display capable of presenting text and/or at least limited graphics, such as from a website.

A memory 360 is coupled to the 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).

Although fig. 3 shows one example of UE 116, various changes may be made to fig. 3. For example, the various components in FIG. 3 may be combined, further subdivided, or omitted, and additional components may be added according to particular needs. As a particular example, the 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). Furthermore, although fig. 3 shows the UE 116 configured as a mobile phone or smartphone, the UE may be configured to operate as other types of mobile or stationary devices.

Fig. 4 and 5 illustrate example wireless transmit and receive paths according to this disclosure. In the following description, the transmit path 400 of fig. 4 may be described as being implemented in a gNB (such as BS 102), while the receive path 500 of fig. 5 may be described as being implemented in a UE (such as UE 116). However, it is understood that the reception path 500 may be implemented in a BS and the transmission path 400 may be implemented in a UE. In some embodiments, the receive path 500 is configured to support physical downlink control channel monitoring per multislot as described in embodiments of the present disclosure.

The transmit path 400, as shown in fig. 4, includes a channel coding and modulation block 405, a serial-to-parallel (S-to-P) block 410, an Inverse Fast Fourier Transform (IFFT) block 415 of size N, a parallel-to-serial (P-to-S) block 420, an add cyclic prefix block 425, and an up-converter (UC) 430. The receive path circuit 500 as shown in fig. 5 includes a down-converter (DC) 555, a remove cyclic prefix block 560, a serial-to-parallel (S-to-P) block 565, a Fast Fourier Transform (FFT) block 570 of size N, a parallel-to-serial (P-to-S) block 575, and a channel decoding and demodulation block 580.

As shown in fig. 4, a channel coding and modulation block 405 receives a set of information bits, applies coding, such as Low Density Parity Check (LDPC) coding, and modulates input bits, such as with Quadrature Phase Shift Keying (QPSK) or Quadrature Amplitude Modulation (QAM), to generate a sequence of frequency domain modulation symbols. Serial-to-parallel block 410 sequentially converts (such as demultiplexes) the serial modulation 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. An IFFT block 415 of size N performs an IFFT operation on the N parallel symbol streams to generate a time domain output signal. Parallel-to-serial block 420 converts (such as multiplexes) the parallel time domain output symbols from IFFT block 415 of size N to generate a serial time domain signal. The add cyclic prefix block 425 inserts a cyclic prefix into the time domain signal. Up-converter 430 modulates (such as up-converts) the output of add cyclic prefix block 425 to an RF frequency for transmission via a wireless channel. The signal may also be filtered at baseband before being converted to RF frequency.

The RF signal transmitted from the BS102 reaches the UE 116 after passing through the wireless channel, and an operation inverse to that at the BS102 is performed at the UE 116.

As shown in fig. 5, down-converter 555 down-converts the received signal to baseband frequency and removes cyclic prefix block 560 and removes the cyclic prefix to generate a serial time domain baseband signal. Serial-to-parallel block 565 converts the time-domain baseband signal into a parallel time-domain signal. The FFT block 570 of size N performs an FFT algorithm to generate N parallel frequency domain signals. Parallel-to-serial block 575 converts the parallel frequency domain signal into a sequence of modulated data symbols. Channel decoding and demodulation block 580 demodulates and decodes the modulation symbols to recover the original input data stream.

Each of BSs 101-103 can implement a transmit path as shown in fig. 4 similar to that transmitted in the downlink to user equipment 111-116 and can implement a receive path as shown in fig. 5 similar to that received in the uplink from UE 111-116. Similarly, each of the UEs 111-116 may implement a transmit path 400 for transmitting in the uplink to the BSs 101-103 and may implement a receive path 500 for receiving in the downlink from the BSs 101-103.

Each of the components in fig. 4 and 5 may be implemented using hardware alone or using a combination of hardware and software/firmware. As a specific example, at least some of the components in fig. 4 and 5 may be implemented in software, while other components may be implemented in configurable hardware or a mixture of software and configurable hardware. For example, FFT block 570 and IFFT block 515 may be implemented as configurable software algorithms, where the value of size N may be modified depending on the implementation.

Further, although described as using an FFT and an IFFT, this is exemplary only 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 will be appreciated that for DFT and IDFT functions, the value of the variable N may be any integer (such as 1, 2, 3, 4, etc.), while for FFT and IFFT functions, the value of the variable N may be any integer that is a power of 2 (such as 1, 2, 4, 8, 16, etc.).

Although fig. 4 and 5 show examples of wireless transmission and reception paths, various changes may be made to fig. 4 and 5. For example, the various components in fig. 4 and 5 may be combined, further subdivided, or omitted, and additional components may be added according to particular needs. Further, fig. 4 and 5 are intended to illustrate examples of the types of transmit 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.

As described in more detail below, the transmit and receive paths of the gNB 102 (implemented using the RF transceivers 210a-210n of fig. 2, the TX processing circuitry 215 of fig. 2, and/or the RX processing circuitry 220 of fig. 2) support aggregated communications for Frequency Division Duplex (FDD) cells and Time Division Duplex (TDD) cells.

NR supports transmission and reception based on higher layer configuration such as Radio Resource Control (RRC) signaling, as described in references 4 and 6.

Semi-persistent scheduling (SPS) received by a Physical Downlink Shared Channel (PDSCH) is configured by RRC per serving cell and per bandwidth part (BWP). In the same BWP, multiple assignments may be activated simultaneously. Activation and deactivation of SPS PDSCH reception is independent between serving cells.

For SPS PDSCH reception, a Downlink (DL) assignment is provided to the UE over a Physical Downlink Control Channel (PDCCH), and the UE stores or clears the DL assignment based on whether the DL assignment indicates SPS PDSCH activation or deactivation, respectively.

In some embodiments, when configuring SPS PDSCH, RRC configures the following parameters: (i) configured scheduling radio network temporary identifier (cs-RNTI), (ii) nrofHARQ-Processes, (iii) harq-ProcID-Offset, and (iv) period. Here, cs-RNTI is used for activation, deactivation, and retransmission. The expression nrofHARQ-Processes represents the number of configured HARQ Processes for SPS PDSCH. The expression HARQ-ProcID-Offse corresponds to the offset of the HARQ process of SPS PDSCH. Finally, the period is the period of the downlink assignment configured for SPS PDSCH.

When the upper layer releases the SPS PDSCH, the UE releases all corresponding configurations.

After configuring the downlink assignment for the SPS PDSCH, the Medium Access Control (MAC) entity sequentially considers that the nth downlink assignment occurs in the slot as described in equation (1).

(numberofslotsperframe×sfn+number of slots in frame) = [ (numberofslotsperframe×sfnstart time+slotstart time) +n×period×numberofslotsperframe/10] module (1024×numberofslotsperframe) … (1)

Here, the expressions SFNstart (SFN start) time and slotstart (slot start) time are the SFN and slot, respectively, of the first transmission of the PDSCH in which the configured downlink assignment is (re) initialized.

There are three types of Physical Uplink Shared Channel (PUSCH) transmissions without dynamic grants. The configured grant type 1 is that an uplink grant is provided by RRC and stored as a configured uplink grant. The configured grant type 2 is where an uplink grant is provided by the PDCCH and L1 signaling activated or deactivated based on the indication of the configured uplink grant is stored as a configured uplink grant or clear. Finally, the retransmission on the uplink grant of type 1 or type 2 of the stored configuration is configured with cg-retransmission timer.

Note that type 1 and type 2 are configured by RRC per serving cell and per BWP. In the same BWP, multiple configurations may be activated simultaneously. For type 2, activation and deactivation are independent between serving cells. For the same BWP, the MAC entity may be configured with both type 1 and type 2.

In some embodiments, when configured grant type 2 is configured, the RRC configures the following five parameters. The first parameter CS-RNTI is used for activation, deactivation and retransmission. The second parameter period is the configured license type 2 period. The third parameter nrofHARQ-Processes corresponds to the number of configured licensed HARQ Processes. The fourth parameter HARQ-ProcID-Offset corresponds to the Offset of the licensed HARQ process for the configuration of the shared spectrum channel access operation. Finally, a fifth parameter HARQ-ProcID-Offset2 corresponds to the Offset of the configured licensed HARQ process.

Additionally, when retransmissions on the configured uplink grant are configured, the RRC configures the following parameters cg-retransmission timer. Here, cg-retransmission timer corresponds to the duration after the (re) transmission of the configuration of the HARQ process, at which point the UE will autonomously retransmit the HARQ process.

After configuring the uplink grant for configured grant type 2, the MAC entity sequentially considers that the nth uplink grant occurs in the symbol as described in equation (2).

[ (SFN x number OfSlotsPerframe x number OfSymbolsPerSlot) + (number of slots in frame x number of symbols in number of slots of number OfSymbsPerSlot) +number of symbols in slots of frame)]＝[(SFN _starttime ×numberOfSlotsPerFrame×numberOfSymbolsPerSlot+slot _{start time} ×numberOfSymbolsPerSlot+symbol _{start time} )+N×periodicity]modulo(1024×numberOfSlotsPerFrame×numberOfSymbolsPerSlot)…(2)

Here, SFN _{start time} 、slot _{start time} And symbol _{start time} The SFN, time slot and symbol, respectively, of the first transmission opportunity of PUSCH in which the configured uplink grant is (re) initialized.

In some embodiments, when a configured uplink grant is released by an upper layer, all corresponding configurations are released and all corresponding uplink grants will be cleared.

For configured grant type 2, the MAC entity should clear the configured uplink grant(s) immediately after the first transmission of the configured grant confirmation MAC Control Element (CE) or the multi-entry configured grant confirmation MAC CE acknowledging the configured uplink grant deactivation.

In some embodiments, the retransmission is performed by: (i) repeating the configured uplink grant, (ii) receiving an uplink grant addressed to the CS-RNTI, or (iii) retransmitting on the configured uplink grant.

Note that NR release 15 supports slot-based PDCCH monitoring, for sub-carrier spacing (SCS) of 15kHz, 30kHz, 60kHz and 120kHz, a maximum number a of non-overlapping Control Channel Elements (CCEs) and PDCCH Blind Decoding (BD) for channel estimation is defined for each slot. Tables 10.1-2 and 10.1-3 of TS 38.213 define the maximum numbers of PDCCH BD and non-overlapping CCEs, respectively, for each slot [ see reference 3].

Further, NR release 16 also supports span-based PDCCH monitoring, where TS 38.213[ REF-3 ] is supported for different UE capabilities]The maximum number of PDCCHs BD and CCE limits are defined in tables 10.1-2A and 10.1-3A. Three types of PDCCH monitoring capability with combinations (X, Y) are supported. For SCS configuration μ=0, 1, the span gap X may be 2, 4 or 7 symbols, while the span duration Y is 2 or 3 symbols, where SCS is 2 ^μ ·15kHz。

NR operation on carriers with frequencies between 52.6GHz and 71GHz uses SCS of 120kHz or greater to overcome phase noise and uses the same FFT size as lower carrier frequency operation. Therefore, a new maximum number of PDCCH BD and non-overlapping CCEs needs to be defined for higher SCS (such as 480kHz and 960 kHz). The Transmission Time Interval (TTI), expressed as span duration or slot duration, decreases linearly with the SCS. For the same UE PDCCH monitoring capability as slot-based or span-based PDCCH monitoring with a maximum SCS of 120kHz, the PDCCH monitoring overhead within a TTI will increase significantly due to the short TTI duration of the high SCS. The larger PDCCH monitoring burden in shorter TTIs is also challenging for the UE to implement in practice. For example, for 480kHz SCS, the UE is typically unable to handle the same maximum number of PDCCH BD/non-overlapping CCEs per slot as 30kHz SCS, due to the shorter slot duration of the 480kHz SCS.

PDCCH monitoring based on multi-slot spans may be considered to reduce the large PDCCH monitoring burden within the short TTI of the high SCS by increasing the TTI of a slot to that of more than one slot. The maximum number of PDCCH monitoring capabilities according to PDCCH BD/non-overlapping CCEs under high SCS may be determined for the PDCCH monitoring periods of multiple consecutive slots.

When a UE, such as UE 116, is configured for operation of Carrier Aggregation (CA), including in the case of Dual Connectivity (DC), the UE should monitor the PDCCH for scheduling on multiple cells, and the maximum number of UE capabilities for PDCCH BD/non-overlapping CCEs may not scale linearly with the number of scheduled cells relative to the maximum number of PDCCH BD/non-overlapping CCEs for a single scheduled cell. For operation with a small slot duration per scheduling cell (such as SCS for 480kHz or 960 kHz), the maximum number of PDCCH BD/non-overlapping CCEs should be defined per multislot, whereas for smaller SCS such as 15kHz or 30kHz they should be defined per span of less than slot or per slot.

The determination of CCE indexes of PDCCH candidates is based on parametersHere, parameter->Is the slot index of the PDCCH monitoring occasion. PDCCH monitoring and X for multislot based >PDCCH monitoring duration of 1 slot, for each PDCCH monitoring occasion within X slots, index of the first slot of the X slots is used to determine +.>(e.g.)>Quilt is covered withReplacement). Otherwise, update +/every time slot>In the case of (2), the CCE-based structure of PDCCH transmission of Rel-16 cannot be maintained, considering that the time-first mapping of PDCCH and Y may be greater than 1 slot.

Accordingly, embodiments of the present disclosure contemplate a need to support per multislot determination of PDCCH monitoring capability for UEs configured for carrier aggregation operation. Embodiments of the present disclosure also contemplate that for a PDCCH monitoring period of N >1 consecutive slots, allocation of PDCCH candidates for the or each search space set needs to be supported, including discarding PDCCH candidates for the or each search space set. Embodiments of the present disclosure also contemplate the need for UE capabilities that support PDCCH monitoring reporting over multiple timeslots. Additionally, embodiments of the present disclosure take into account the need to support CCE indexes that determine PDCCH candidates for PDCCH monitoring over multiple slots.

Note that the present disclosure includes several embodiments that may be used in combination or combination with each other or may operate independently. For example, embodiments of the present disclosure describe (i) per-multislot PDCCH monitoring capability for carrier aggregation, (ii) per-multislot PDCCH discard/oversubscription (oversubscription), (iii) multislot PDCCH monitoring capability reporting, and (iv) CCE location determination.

Embodiments of the present disclosure describe multislot monitoring capabilities for CA. The following examples and embodiments, such as the example and embodiments of fig. 6, describe per multislot monitoring capabilities for carrier aggregation.

For example, embodiments of the present disclosure contemplate each set of N for a UE (such as UE 116) configured for operating CA and SCS configuration μ _slot >PDCCH monitoring capability of 1 slot. Here, μ _min ≤μ≤μ _max ，μ _min Or mu _max Is a positive integer such as mu _min ＝5,μ _max ＝6。

In one example of a multislot PDCCH monitoring capability, a UE (such as UE 116) may monitor each group N according to a combination of (X, Y) _slot =x slots. The PDCCH monitoring capability is based on a combination (X, Y), where X and Y are the number of consecutive slots, the group of X slots is consecutive and non-overlapping, and Y slots are within X slots. The first set of X slots starts from the beginning of the subframe. The beginning of two consecutive groups of Y slots is separated by X slots. The UE determines a span configured with a plurality of PDCCH candidates according to the combination of (X, Y).

The UE PDCCH monitoring capability per multislot may be determined based on one of the following methods. In the first method, each set of N is reported by the UE _slot PDCCH monitoring capability of (c). In another method, each group of N _slot The PDCCH monitoring capability of (1) is provided to the UE by a higher layer, such as through a configuration parameter monitoringcapability config for a scheduling cell (a cell where the UE monitors PDCCH). In another method, each group of N _slot Is defined in the system operating specification of each applicable SCS configuration of PDCCH transmission. For example, when SCS is configured to μ=5 or μ=6, the UE may assume a per-multislot PDCCH monitoring capability for PDCCH reception in the active DL BWP of the scheduling cell.

The UE may report PDCCH-BlindDetectionCA3 (PDCCH-blind detection CA 3) to indicate the PDCCH blind decoding capability per multislot PDCCH monitoring capability supported by the UE. The UE may report PDCCH-BlindDetectionCA (PDCCH-blind detection CA) to indicate PDCCH blind decoding capability, PDCCH monitoring capability, supported by the UE.

If a UE, such as UE 116, indicates carrier aggregation Capability of more than K serving cells and has configuration of PDCCH monitoring Capability per multislot (e.g., monitorcapability config=r17 monitorcapability), the UE includes an indication of, for example, UE-NR-Capability-r17 in the higher layer parameters, indicating the maximum number of PDCCH candidates that the UE can monitor and the maximum number of non-overlapping CCEs for downlink cells having monitorcapability config=r17 monitorcapability when the UE is configured to perform carrier aggregation operation on more than X cells. X is a predetermined integer, for example k=4 or k=2. Alternatively, there may be no predefined X value, and the UE may report PDCCH monitoring capabilities of any number of serving cells. The number of slots N may also be predetermined for each SCS _slot Or a combination (X, Y) in which PDCCH monitoring capability is defined per multislot, such as N for SCS at 480kHz _slot N of SCS for 960kHz or 4 slots _slot =8 slots.

When the UE is not configured for DC operation, and the UE is configured for each set of N for all downlink cells _slot In PDCCH monitoring of a single slot, for example, the UE is provided with monitoringcapability config=r17 monitoringcapability for all downlink cells, wherein the UE monitors the PDCCH and the UE determines that the monitoring corresponds toThe ability of the maximum number of PDCCH candidates and the maximum number of non-overlapping CCEs per multislot of the downlink cell. For example, if the UE does not provide pdcch-BlindDetectionCA, then +.>For the number of configured downstream serving cells, otherwise +.>Is the value of pdcch-BlindDetectionCA.

When a UE, such as UE 116, is configured for both a primary cell group (MCG) and a Secondary Cell Group (SCG)While the user is using the NR radio access technology (NR-DC) DC operation, the UE determines to monitor the corresponding MCGThe ability of the maximum number of PDCCH candidates per multislot and the maximum number of non-overlapping CCEs for a downlink cell, where for MCG,provided by a higher layer configuration parameter (e.g., pdcch-BlindDetection 3) and determines that monitoring corresponds to SCG Every N of downlink cells _slot Capability of maximum number of PDCCH candidates and maximum number of non-overlapping CCEs for a slot, wherein for SCG +.>Provided by a higher layer configuration parameter, such as pdcch-BlindDetection 3. When a UE is configured for carrier aggregation operation over more than X cells, or when the UE is configured for NR-DC operation, for a group of cells, the UE does not desire to monitor each group of N _dlot The number of PDCCH candidates of a slot or the number of non-overlapping CCEs, which is greater than +.>Maximum number of derivations.

Fig. 6 illustrates an example method 600 of a UE procedure for determining per multislot PDCCH monitoring of CA according to an embodiment of this disclosure. The steps of method 600 may be performed by any of UEs 111-116 of fig. 1, such as UE 116 of fig. 3. The method 600 of fig. 6 is for illustration only and other embodiments may be used without departing from the scope of the present disclosure.

In step 610, a UE (such as UE 116) reports that X is greater than X>1 serving cellCA capability. In step 620, the UE is configured with a plurality of downlink serving cells and is provided with N for monitoring all downlink cells of the PDCCH at the UE _slot >Indication of PDCCH monitoring is performed on 1 slot. In step 630, the UE determines whether the UE is configured with NR-DC operation.

When the UE is not configured with NR-DC operation (as determined in step 630), the UE determines in step 640 that monitoring corresponds toEvery N of downlink cells _slot The ability to have the maximum number of PDCCH candidates and the maximum number of non-overlapping CCEs for each slot. Then, in step 650, the UE determines whether the UE reports PDCCH-blinddetection ca3 to indicate PDCCH decoding capability. If the UE does not provide pdcch-BlindDetectionCA3, then in step 660 the UE determines +.>As configured number of downlink serving cells 506. Alternatively, if the UE does provide pdcch-BlindDetectionCA3, the UE determines +.>As a value of pdcch-BlindDetectionCA 3.

When the UE is configured with NR-DC operation (as determined in step 630), the UE determines that the UE corresponds to MCG in step 680Monitoring of individual downlink cells per N _slot The ability to have the maximum number of PDCCH candidates and the maximum number of non-overlapping CCEs for each slot. In step 690, the UE determines to monitor +.>Every N of downlink cells _slot The ability to have the maximum number of PDCCH candidates and the maximum number of non-overlapping CCEs for each slot.

When the UE is configuredFor NR-DC operation and total on both MCG and SCGWith a number of downlink cells and the UE being provided for monitoringcapability config = r17monitoringcapability for all downlink cells (where the UE monitors PDCCH), the UE expects to be provided for PDCCH-BlindDetection for MCG and for SCG with values satisfying (i) PDCCH-BlindDetection3 for MCG + PDCCH-BlindDetection3 for SCG <=pdcch-BlindDetection ca, if UE reports pdcch-BlindDetection ca or (ii) pdcch-BlindDetection3+ for MCG for SCG>If the UE does not report pdcch-BlindDetectionCA.

When the UE is configured for NR-DC operation and the UE is provided for monitoringcapability config=r17 monitoringcapability for all downlink cells in which the UE monitors PDCCH, the UE may indicate respective maximum values of the PDCCH-BlindDetection for MCG and the PDCCH-BlindDetection for SCG by PDCCH-BlindDetection nmcg-UE-r17 and PDCCH-BlindDetection SCG-UE-r 17.

In some embodiments, if the UE reports pdcch-BlindDetectionCA, (i) the value range of pdcch-BlindDetectionCG-UE-r 17 or pdcch-BlindDetectionSCG-UE-r17 is [1, …, pdcch-BlindDetectionCA-1](ii) pdcch-BlindDetectionmCG-UE-r17+pdcch-BlindDetectionSCG-UE-r17>=pdcch-BlindDetectionCA. Otherwise, ifIs the maximum total number of downlink cells that the UE indicated in UE-NR-Capability can configure for NR-DC on both MCG and SCG, then (i) the value range of pdcch-BlindDetectionCG-UE-r 17 or pdcch-BlindDetectionSCG-UE-r17 is [1,2,3]Or 1, and (ii)>

If the UE is capable of supporting the first set And second set->The UE determines the number of serving cells asWhere R is the value reported by the UE. Here, in->In the first set of individual serving cells, the UE is either not provided with corespul index or is provided with corespul index having a single value for all CORESET on all DL BWP of each scheduling cell from the first set of serving cells. Additionally, in->In the second set of individual serving cells, the UE is either not provided with coresetpoul index or is provided with coresetpoul index, with a value of 0 for the first CORESET, coresetPoulIndex on any DL BWP of each scheduling cell from the second set of serving cells and a value of 1 for the second CORESET, coresetPoulIndex. />

In some embodiments, the UE may support both PDCCH monitoring capabilities per multislot and PDCCH monitoring capabilities per slot. For example, in one approach, the configuration of PDCCH monitoring capability per multislot and PDCCH monitoring capability per slot is bundled in a single higher layer configuration parameter (e.g., r17 PDCCHmonitoring) for a group of cells, for a cell with SCS < = n_scs kHz, a UE is configured for PDCCH monitoring capability per slot, and for a cell with SCS > n_scskhz, a UE is configured for PDCCH monitoring capability per multislot. N_scs is a predetermined constant, for example n_scs=120. In another approach, the configuration of the PDCCH monitoring capability per multislot and the PDCCH monitoring capability per slot is not bundled. The UE is configured for PDCCH monitoring capability per slot of the first group of cells and the UE is configured for PDCCH monitoring capability per multi-slot of the second group of cells.

When the UE supports both (i) the PDCCH monitoring capability per multislot and (ii) the PDCCH monitoring capability per multislot, then the UE may report PDCCH-blinddetectionca_1 and PDCCH-blinddetectionca_3 to indicate PDCCH blind decoding capability based on the PDCCH monitoring capability per multislot and PDCCH monitoring capability per multislot, respectively.

If the UE indicates a configuration of more than K serving cells with PDCCH monitoring capabilities per multislot, e.g., monitoringcapability config=r17 monitoringcapability, or more than L serving cells with PDCCH monitoring capabilities per slot, e.g., monitoringcapability config=r15 monitorcapability, the UE includes in a higher layer parameter (e.g., UE-NR-Capability-17) a maximum number of monitored downlink candidates for the PDCCH with monitoring capabilities per multislot when the UE is configured to perform carrier aggregation operations on more than k+l cells with at least K downlink cells with monitoringcapability config=r17 monitorcapability, and at least L downlink cells with monitorcapability Capability with monitorcapability condingcapability r15 for each of the downlink monitoring capabilities of the configuration of multiple PDCCHs.

When the UE is not configured for DC operation, the UE determines that the UE corresponds toThe ability of a downlink cell to monitor the maximum number of PDCCH candidates per multislot or per slot and the maximum number of non-overlapping CCEs, wherein + ->For example if the UE does not mentionThe number of downlink serving cells configured for pdfch-blinddetection ca 1. Otherwise, if the UE reports a combination of (pdcch-BlindDetectionCA 1, pdcch-BlindDetectionCA 3)Is the value of pdcch-BlindDetectionCA1, otherwise +.>The value of pdcch-BlindDetectionCA1 in the combination of (pdcch-BlindDetectionCA 1, pdcch-BlindDetectionCA 3) provided for pdcch-BlindDetectionCA-combiniInder. Additionally, if the UE does not provide pdcch-BlindDetectionCA3, thenIs the number of configured downlink serving cells. Otherwise, if the UE reports a combination of (pdcch-BlindDetectionCA 1, pdcch-BlindDetectionCA 3), then +.>Is the value of pdcch-BlindDetectionCA3, otherwise +.>The value of pdcch-BlindDetectionCA3 in the combination of (pdcch-BlindDetectionCA 1, pdcch-BlindDetectionCA 3) provided for pdcch-BlindDetectionCA-combiniInder.

When a UE (such as UE 116) is configured for DC operation and provided with monitoringcapability config=r15 monitoringcapability for at least L downlink cells and monitoringcapability config=r17 monitoringcapability for at least K downlink cells, wherein the UE monitors the PDCCH, the UE determines the capability to monitor the maximum number of PDCCH candidates and the maximum number of non-overlapping CCEs, which corresponds to (i) MCG A downlink cell, wherein->Provided for the MCG by higher layer parameters (e.g. blinddetection_a), (ii) the +.>A downlink cell, wherein->Is provided for the SCG by a higher layer parameter (e.g. Blinddetection_A), (iii) is +.>A downlink cell, wherein->Provided for the MCG by higher layer parameters (e.g. blinddetection_b), and (iv) SCGA downlink cell, wherein->Provided by higher layer parameters of the SCG, such as blinddetection_b.

When the UE is configured for carrier aggregation operation of more than k+l cells, where at least K downlink cells have monitorcapability config=r17 monitorcapability and at least L downlink cells have monitorcapability config=r15 monitorcapability, or when the UE is configured for NR-DC operation, the UE does not expect for the cell group: (i) Monitoring each group of N _slot More than the corresponding value of each time slotThe number of the maximum number of PDCCH candidates derived or the number of non-overlapping CCEs, and (ii) monitoring more than one corresponding value per slot +.>The number of PDCCH candidates of the maximum number derived or the number of non-overlapping CCEs.

When the UE is configured for NR-DC operation, and there is a total on both MCG and SCG A downlink cell, and providing the UE with +_for where the UE monitors PDCCH>Monitoringcapability config=r15 monitoringcapability of individual downlink cells +.>When monitoringcapability config=r17 monitoringcapability of the downlink cells, the UE is expected to be provided with pdcch-blinddetection_a and pdcch-blinddetection_b for MCG. Here, blinddetection_a and pdcch-blinddetection_b for SCG have values satisfying equation (3 a) or (3B) and equation (4 a) or (4B).

Pdcch-blinddetection_a for MCG + pdcch-blinddetection_a for SCG < = pdcch-BlindDetection ca1, … if UE reports pdcch-BlindDetection ca1, … (3 a)

pdcch-Blinddetection_A+ for MCG for SCG If the UE does not report pdcch-BlindDetectionCA1 … (3 b)

Pdcch-blinddetection_b for mcg+pdcch-blinddetection_b for SCG < = pdcch-BlindDetection ca2 if UE reports pdcch-BlindDetection ca2 … (4 a)

pdcch-Blinddetection_B for MCG+pdcch for SCG-If the UE does not report pdcch-BlindDetectionCA2……(4b)

When a UE (such as UE 116) is configured for DC operation and provided for at least L downlink cells where the UE monitors PDCCH, monitoringcapability config=r15 monitoringcapability and monitoringcapability of at least K downlink cells, the UE may indicate respective maximum values of the PDCCH-blinddetection_a for the MCG and the PDCCH-blinddetection_a for the SCG by the PDCCH-BlindDetection cg-UE1 and the PDCCH-BlindDetection SCG-UE1, and indicate respective maximum values of the PDCCH-blinddetection_b for the SCG by the PDCCH-blinddetection_ue 2 and the PDCCH-BlindDetection SCG-UE 2.

For example, if the UE reports pdcch-BlindDetectionCA_A, (i) pdcch-BlindDetectionCG-UE 1 or pdcch-BlindDetectionSCG-UE1 has a value in the range of [1, …, pdcch-BlindDetectionCA1]And (ii) pdcch-BlindDetectionCG-UE 1+pdcch-BlindDetectionSCG-UE1>=pdcch-BlindDetectionCA 1. Otherwise, ifIs the maximum total number of downlink cells, then UE is provided with monitoringcapability config = r15monitoringcapability, and UE can configure NR-DC on both MCG and SCG, as indicated in UE-NR-Capability, then (i) the value range of pdcch-blinddetectnmcg-UE 1 or pdcch-blinddetectscg-UE 1 is [0,1,2]Or [3,4 ]](ii) dcch-BlindDetection nCG-UE 1+pdcch-BlindDetection>＝/>

As another example, if the UE reports pdcch-BlindDetectionCA_B, (i) the value range of pdcch-BlindDetectionCG-UE 2 or pdcch-BlindDetectionSCG-UE2 is [1, …, pdcch-BlindDetectionCA2]And (ii) pdcch-BlindDetectionCG-UE 2+pdcch-BlindDetectionSCG-UE2>=pdcch-BlindDetectionCA 2. Otherwise, ifIs the maximum total number of downlink cells, then UE is provided with monitoringcapability config = r17monitoringcapability, and UE can configure NR-DC on both MCG and SCG, as indicated in UE-NR-Capability, then (i) the value range of pdcch-blinddetectnmcg-UE 2 or pdcch-blinddetectscg-UE 2 is [5,6 ] ](ii)

If the UE is configured to monitor each group N of serving cells _slot PDCCH of each slot, UE gets an indication to monitor each group N on serving cell _slot PDCCH candidates for each slot and the maximum number of PDCCH for non-overlapping CCEs are described in tables 1 and 2 below. Note that table 1 describes every N of DL BWP with SCS configuration μ e {4,5,6} for a single serving cell _slot Maximum number of PDCCH candidates monitored in a slotTable 2 describes every N of DL BWP with SCS configuration μ ε {4,5,6} for a single serving cell _slot Maximum number of non-overlapping CCEs per slot +.>

[ Table 1 ]

[ Table 2 ]

Various methods may be performed to determine PDCCH monitoring capability per multislot. In one approach, the per multislot PDCCH monitoring capability includes DL BWP with SCS configuration μEvery N of (2) _slot >Maximum number of monitored PDCCH candidates for 1 slotAnd every N of DL BWP with SCS configuration μ _slot >Maximum number of non-overlapping CCEs of 1 slotIn another approach, the per multislot PDCCH monitoring capability comprises the maximum number of monitored PDCCH candidates of at most Y slots per multislot span for DL BWP with SCS configuration μ +.>And for DL BWP with SCS configuration μ, maximum number of non-overlapping CCEs up to Y slots per multislot span +. >The UE supports PDCCH monitoring occasions in any slot configured based on the search space set with a minimum of X slot time intervals between the first slots of any two consecutive multislot spans. The multi-slot span starts from the first slot where the PDCCH monitoring opportunity starts and ends at the last slot where the PDCCH monitoring opportunity ends, where the number of slots of the multi-slot span is up to Y. In yet another example of multi-slot PDCCH monitoring capability, the UE may monitor each group of N according to a combination of (X, Y) _slot =x slots. The PDCCH monitoring capability is based on a combination (X, Y), where X and Y are the number of consecutive slots, the group of X slots is consecutive and non-overlapping, and Y slots are within X slots. The first set of X slots starts from the beginning of the subframe. The beginning of two consecutive groups of Y slots is separated by X slots. The UE determines the maximum number of monitored PDCCH candidates for each set of X slots of DL BWP with SCS configuration μ +.>And maximum number of non-overlapping CCEs per group of X slots +.>

If the UE is configured as N in the serving cell _slot The PDCCH is monitored on each slot, then the UE obtains an indication of the maximum number of PDCCH candidates and non-overlapping CCEs on the monitored serving cell based on the combining (X, Y), as described in tables 3 and 4. Note that table 3 describes the maximum number of monitored PDCCH candidates for each combination (X, Y) of DL BWP with SCS configuration μ e {4,5,6} for a single serving cell Similarly, table 4 describes the maximum number of non-overlapping CCEs per combination (X, Y) of DL BWPs with SCS configuration mu e {4,5,6} for a single serving cell ≡>

[ Table 3 ]

[ Table 4 ]

If the UE does not report pdcch-BlindDetectionCA or is not provided bdfactor rr, γ=r. If the UE reports pdcch-BlindDetectionCA, the UE may be indicated by bdfactor rr or γ=1 or γ=r.

If the UE is configured withA downlink cell for which +.>A plurality of downlink cells, the UE configured to monitor every N using SCS configuration mu _slot PDCCH of a slot, where schedulingMonitoring associated PDCCH candidates in active DL BWP of a cell, wherein +.>And the UE is not provided with coresetpoolndex, the UE is not required to monitor on the active DL BWP of the scheduling cell, (i) when the scheduling cell is from +.>In the case of multiple downlink cells, there are more than one per multislot PDCCH monitoring period per scheduled cellMore than or equal to PDCCH candidatesOr->Non-overlapping CCEs, (ii) when the scheduling cell is from +.>In the case of several downlink cells, there is more than +/per multislot of each scheduled cell>Or->More than or equal to PDCCH candidatesOr->Non-overlapping CCEs, or (iii) when the scheduling cell is from + ->In the case of multiple downlink cells, each of the cells to be scheduled has More than +.A CORESET with the same corespoolIndex value is per multislot>Or->More than or equal to PDCCH candidatesOr->And non-overlapping CCEs.

In some embodiments, if UE (i) is configured withA plurality of downlink cells forThe UE is not provided with monitoringcapability config, (ii) the associated PDCCH candidates are monitored in the active DL BWP of the scheduling cell(s) using SCS configuration μ, as described in equation (5), and (iii) the DL BWP of the active cell is the active DL BWP of the active cell and the DL BWP of the inactive cell is the DL BWP with the index provided by the first active downlink BWP-Id of the cell for deactivation, the UE does not have to monitor various elements. For example, here, the UE does not have to monitor more PDCCH candidates as described in equation (6) or equation (7). Furthermore, the UE does not have to be from either equation (8) or equation (9) as described inMore non-overlapping CCEs per slot are monitored on the active DL BWP of the scheduling cell(s) of the downlink cells.

If the UE is configured with onlyA downlink cell for which the UE is directed>The downlink cells are provided with monitoringcapability config = r17monitoringcapability and are configured with associated PDCCH candidates monitored in the active DL BWP of the scheduling cell using SCS configuration μ and with (X, Y) using a combination for PDCCH monitoring >The +.>Wherein->The DL BWP of the active cell is the active DL BWP of the active cell and the DL BWP of the deactivated cell is the DL BWP with the index provided by the firstActiveDownlinkBWP-Id of the cell for deactivation, then the UE does not need to monitor more than as in equation (10)The PDCCH candidates described are or more than non-overlapping CCEs are monitored as described in equation (11). This is from +/every X slots>A set of groups of every X slots on the active DL BWP of all scheduling cells of the downlink cells.

Here the number of the elements is the number,is the number of configured cells with the associated PDCCH candidates monitored in the active DL BWP of the scheduling cell using SCS configuration j. According to the combination (X, Y), a->Of downlink cellsIs a scheduled cell using PDCCH monitoring capability, if the UE is configured with a downlink cell, the UE is provided with both monitorcapability capability=r15 monitorcapability and monitorcapability capability Config=r17 monitorcapability>Replaced by

In some embodiments, forIndividual downlinkEvery scheduled cell in the road cells, the UE does not have to monitor for having more than +.>Or->Active DL BWP with SCS configuration μ of scheduling cell of individual PDCCH candidates. Similarly, the UE does not have to monitor every N _slot More than->Or->Is a non-overlapping CCE of (b).

For coming fromEach of the scheduled cells in the plurality of downlink cells, the UE does not have to monitor every N on the active DL BWP with SCS configuration μ of the scheduling cell _slot More than->Or (b)More than or equal to PDCCH candidatesOr->And non-overlapping CCEs. Similarly, for the self->For CORESET with the same coreetpolindex value, the UE does not have to monitor every N on the active DL BWP with SCS configuration μ of the scheduling cell for each of the scheduled cells in the downlink cells _slot Multiple time slotsIn->Or->Multiple PDCCH candidates or more->Or->And non-overlapping CCEs.

Although fig. 6 illustrates method 600, various changes may be made to fig. 6. For example, while the method 600 of fig. 6 is shown as a series of steps, the various steps may overlap, occur in parallel, occur in a different order, or occur multiple times. In another example, steps may be omitted or replaced with other steps. For example, the steps of method 600 may be performed in a different order.

Embodiments of the present disclosure also describe PDCCH dropping/oversubscription per multislot. The following examples and embodiments, such as the example and embodiment of fig. 7, discard/oversubscribe per multislot PDCCH.

For example, embodiments of the present disclosure contemplate that the following are in N _slot >Allocation or discard of PDCCH candidates in a multislot PDCCH monitoring period of 1 consecutive slot. In one example of multi-slot PDCCH monitoring capability, the UE may monitor each group N according to a combination of (X, Y) _slot =x slots. The PDCCH monitoring capability is based on a combination (X, Y), where X and Y are the number of consecutive slots, the group of X slots is consecutive and non-overlapping, and Y slots are within X slots. The first set of X slots starts from the beginning of the subframe. The beginning of two consecutive groups of Y slots is separated by X slots. The UE determines a span configured with a plurality of PDCCH candidates according to the combination of (X, Y).

For a UE provided with per multislot PDCCH monitoring capability at DL BWP with SCS configuration μ for PDCCH reception, if UE determines that the multi-slot PDCCH monitoring period is numbered n _f Number n in the frame of (a) _start Starts in the time slot of>Is the number of slots per frame for DL BWP, O _slot Is an offset, may be provided by, for example, a higher layer or have a predetermined value, such as O _slot ＝0。

The UE may be in N _slot Z in each time slot _slot Configured with PDCCH monitoring occasions in successive time slots, wherein Z _slot ≤N _slot . When Z is _slot ＝N _slot At this time, the UE may be at N _slot A PDCCH monitoring occasion is configured in any of the slots. Z is Z _slot The start of a consecutive time slot may be determined based on one of two methods. In one example, Z _slot The start of a consecutive time slot is fixed and defined in the specification of the system operation. For example, Z _slit Can be N _slot The first of the time slots. In another example, Z is determined based on configuration from a higher layer _slot The start of a consecutive time slot. For example, the configuration of the search space set(s) may include Z _slot Is a value of (2).

In some embodiments, the UE determines N based on one of three methods _slot Or O _slot Is a suitable value for (a). In one method, N _slot Or O _slot μ is defined per SCS configuration in the system operating specification. For example, for μ=4, n _slot =2 or for μ= 5,N _slot =4, or for μ=6, n _slot =8 and O _slot =0. In another method, N _slot Or O _slot Reporting to the network by the UE as UE capability or assistance information. In another method, N _slot Or O _slot Is provided to the UE through higher layer signaling.

For time slot N or N _slot All search space sets within a slot are grouped by radix I _CSS Set S of CSS sets of (2) _css And base number J _uss Set S of USS sets of (1) _USS To represent. USS set s _j ，0≤j≤J _USS At S _USS Is arranged in ascending order of the search space set index.

By using0≤i≤I _css Representing CSS set S _css (i) The number of counted PDCCH candidates for monitoring and with +.>0≤j≤J _USS Representing a USS set S _uss (i) For monitoring the number of counted PDCCH candidates.

For the CSS set, the UE (such as UE 116) monitors multiple PDCCH candidates, as described in equation (12), m uses N _slot In a time slotTotal number of non-overlapping CCEs. />

In the first approach, if a UE (such as UE 116) is configured per N for the primary cell _slot The PDCCH is monitored by a slot, the UE allocates PDCCH candidates for monitoring to every N of the primary cell with active DL BWP of SCS configuration μ according to the following pseudocode _slot A USS set of time slots. If for the set of USSs used for scheduling on the primary cell, the UE is not provided with coreetpoul index of the first CORESET, or is provided with coreetpoul index of the first CORESET having a value of 0 and is provided with coreetpoul index of the second CORESET having a value of 1, and if equation (13) or (14) is satisfied, then syntax (1) applies. Note that grammar (1) applies only to USS sets associated with the first CORESET.The UE does not want to monitor the PDCCH in the USS set of PDCCH candidates that are not allocated for monitoring.

[ Table 5 ]

In the second approach, if a UE (such as UE 116) is configured per N for the primary cell _slot The PDCCH is monitored by a slot, the UE allocates the PDCCH candidates for monitoring to the USS set of the primary cell with active DL BWP of SCS configuration μ according to the following pseudo code. The UE allocates PDCCH candidates to a set of search spaces in slot n, where n _start ≤n≤n _start +N _slot -1. The UE does not want to monitor the PDCCH in the search space set where there is no PDCCH candidate allocated for monitoring. This is described in syntax (2) below.

[ Table 6 ]

/>

/>

In a third method, if the UE is configured to monitor every N for the primary cell based on the combination (X, Y) _slot PDCCH of a time slot, where X or Y is greater than one time slot, the UE allocates PDCCH candidates for monitoring to USS sets of the primary cell of active DL BWP with SCS configuration μ according to syntax (3). The UE allocates PDCCH candidates to a set of search spaces in slot n, where n _start ≤n≤n _start +N _slot -1. The UE does not want to monitor the PDCCH in the search space set where there is no PDCCH candidate allocated for monitoring. This is described in syntax (3) below.

[ Table 7 ]

/>

Fig. 7 illustrates an example method 700 of a UE procedure for PDCCH allocation or dropping based on PDCCH monitoring capabilities per multislot according to an embodiment of the present disclosure. The steps of method 700 may be performed by any of UEs 111-116 of fig. 1, such as UE 116 of fig. 3. The method 700 of fig. 7 is for illustration only, and other embodiments may be used without departing from the scope of the present disclosure.

In step 702, a UE (such as UE 116) is provided with a maximum BD and CCE budget per multislot, e.g.In step 704, the UE determines a multislot PDCCH monitoring period of n_slots having a first slot index n_start. In step 706, for a multi-slot PDCCH monitoring period, the UE starts PDCCH allocation per slot, starting with slot n=n_start. In step 708, the UE sets a maximum BD and non-overlapping CCEs based on the maximum BD and CCE budget per multislot. Examples of maximum BD and non-overlapping CCEs are described in equations (15) and (16) below.

In step 710, the UE determines whether slot n is less than or equal to the expression described in equation (17).

n+n _start ≤n _start +N-1…(17)

If slot n is greater than the expression described in equation (17) above (as determined in step 710), the UE discards the PDCCH allocation of the remaining search space set in step 712. Alternatively, if slot n is less than or equal to the expression described in equation (17) above (as determined in step 710), the UE allocates a PDCCH candidate for each search space set in ascending order of the search space set index in step 714.

For the search space set, the UE determines in step 716 whether the configured PDCCH is not greater than the available BD and whether the non-overlapping CCEs corresponding to the configured PDCCH candidates are not greater than the available non-overlapping CCEs. If the configured PDCCH is not greater than the available BD and the non-overlapping CCEs corresponding to the configured PDCCH candidates are not greater than the available non-overlapping CCEs (as determined in step 716), the UE allocates the configured PDCCH candidates for the search space set, subtracts the configured PDCCH candidates from the maximum BD, and subtracts the non-overlapping CCEs corresponding to the configured PDCCH candidates from the maximum non-overlapping CCEs. Otherwise, the UE discards the PDCCH allocation for the search space set in step 720.

In step 722, after performing step 718 or step 720, the UE increases the slot index n by 1. Thereafter, the process returns to step 710 so that the UE determines whether slot n is less than or equal to the expression described in equation (17) above.

Although fig. 7 illustrates method 700, various changes may be made to fig. 7. For example, while the method 700 of fig. 7 is shown as a series of steps, the various steps may overlap, occur in parallel, occur in a different order, or occur multiple times. In another example, steps may be omitted or replaced with other steps. For example, the steps of method 700 may be performed in a different order.

Embodiments of the present disclosure further describe multi-slot PDCCH monitoring capability reporting.

For example, embodiments of the present disclosure contemplate for every N _slot >UE capability reporting for PDCCH monitoring of 1 slot.

In a first method, the UE may report N as defined in the previous embodiments of the present disclosure _slot Is described (PDCCH discard/oversubscription per multislot). The UE (such as UE 116) is based on the maximum number from among the one or more valuesAnd->Associated values, determining monitor every N _slit The ability to have the maximum number of PDCCH candidates and the maximum number of non-overlapping CCEs for each slot.

In a second method of UE capability reporting for per-multislot PDCCH monitoring, a UE (such as UE 116) may report Z as defined in previous embodiments of the present disclosure _slot Is described (PDCCH discard/oversubscription per multislot).

In a third method of UE capability reporting for per-multislot PDCCH monitoring, a UE (such as UE 116) may reportOr->Is a value of (2). For example, +.>Or->Is a candidate for a candidate value. For at a plurality of N _slot UE capability report for PDCCH monitoring on a single slot includes candidate valuesOr->One of them. For another example, a->Or->The value of (c) may be based on other UE capabilities such as the number of receiver antennas or maximum transmit or receive BW. UEs with the same number of receiver antennas or maximum transmission or reception BW have the same +.>Or->Is a value of (2).

In a fourth method of UE capability reporting for per-multislot PDCCH monitoring, a UE (such as UE 116) may report (N _slot ，Z _slot ) Wherein N is _slot And Z _slot The PDCCH drop/oversubscription per multislot is defined (described) in the previous embodiments of the present disclosure. The UE is based on the maximum number from one or more combinations with the maximumAnd->Associated values, determining monitor every N _slot The ability to have the maximum number of PDCCH candidates and the maximum number of non-overlapping CCEs for each slot.

For each ofIn a fifth method of UE capability reporting for multislot PDCCH monitoring, a UE (such as UE 116) may report one or more combinations of (X2, Y2), where X2 and Y2 are defined below (with respect to a description describing CCE location determination). The UE is based on the maximum number from one or more combinations with the maximumAnd->The associated values determine the ability to monitor the maximum number of PDCCH candidates and the maximum number of non-overlapping CCEs per span.

In a sixth method for UE capability reporting per multislot PDCCH monitoring, a UE (such as UE 116) may report one or more X1 or Y1, where X1 and Y1 are defined below (with respect to a description describing CCE location determination). The UE determines the ability to monitor the maximum number of PDCCH candidates per X1 slot for the PDCCH monitoring duration and the maximum number of non-overlapping CCEs based on a value from one or more X1 or Y2 that is equal to the maximum number of PDCCH candidates per X1 slot (i.e.Or->) And the maximum number of non-overlapping CCEs per X1 slot (i.e.Or->) And (5) associating.

Additionally, embodiments of the present disclosure describe CCE location determination.

For example, embodiments of the present disclosure contemplate determining CCE indexes of PDCCH candidates from a multi-slot based PDCCH monitoring capability.

In some embodiments, the UE may be configured with multi-slot based PDCCH monitoring capability for PDCCH monitoring in the active DL BWP of the serving cell. The UE is configured with a set of search spaces s and CORESET p for multi-slot based PDCCH monitoring in active DL BWP.

In a first approach based on multi-slot PDCCH monitoring capability, a UE (such as UE 116) determines a PDCCH monitoring duration of X1>1 consecutive slots. The UE is configured with a plurality of PDCCH candidates monitored in Y1 consecutive symbols or slots within X1 slots. In one example, Y1 consecutive symbols or slots may start from the first slot of the X1 slots. In another example, Y1 consecutive symbols or slots may start from any slot within X1 slots configured by a higher layer (such as based on a search space set configuration).

For a search space set s associated with CORESET p, the UE determines a plurality of PDCCH candidates in a PDCCH monitoring occasion within a PDCCH monitoring duration of X1 slots. Each PDCCH candidate consists of multiple CCEs. The value n corresponding to the carrier indicator field is described in equation (18) below _CI PDCCH candidates of a search space set of active DL BWP of a serving cell of (b)CCE indexes of the corresponding aggregation level L. />

Note that equation (18) can be used for any CSS where z=0. For example, for any USS, one of the following methods may be used. In one method of the present invention, a method of manufacturing a semiconductor device, Y _p,-X1 ＝n _RNTI not equal to 0, a for pmod3=0 _p =39827, for pmod3=1, a _p =39829, for pmod3=2, a _p =39839, and d=65537, wherein/>Is the index of the first slot of the X1 slots. />For determining CCE indices for each PDCCH candidate in any PDCCH monitoring occasion within a PDCCH monitoring duration of X1 slots. In another method, ->Y _p,-X1 ＝n _RNTI Not equal to 0, a for pmod3=0 _p =39827, for pmod3=1, a _p =39829, for pmod3=2, a _p =39839, and d=65537, wherein +.>Is the index of the first slot of the X1 slots. />For determining CCE indices for each PDCCH candidate in any PDCCH monitoring occasion within a PDCCH monitoring duration of X1 slots.

Additionally, in equation (18), i=0, …, L-1. Expression N _CCE,p Is CORESETp and CCEs (from 0 to N _CCE,p -1 number). Expression n _CI Is a carrier indicator field value if the UE is configured with a carrier indicator field by cross carrier scheduling config for a serving cell on which the PDCCH is monitored; otherwise, include n _CI =0 for any CSS. Expression typeCan be equal to->Wherein->Is the sum n of the UE configured to monitor for aggregation level L _CI Number of PDCCH candidates of the search space set s of the corresponding serving cell. Note that for any CSS, the +.>Additionally, for USS, < >>N, which is all configurations of the search space set s at the CCE aggregation level L _CI Value +.>Is a maximum value of (a). Additionally, for n _RNTI Is a C-RNTI.

In a second method based on multi-slot PDCCH monitoring capability, the UE determines a span configured with multiple PDCCH candidates. The span consists of up to Y2 consecutive symbols or slots. The time interval between the beginning of any two consecutive spans configured with PDCCH candidates is not less than X2 slots, where X2>1.

For the search space set s associated with CORESET p, the UE determines the number of PDCCH candidates in the span. Each PDCCH candidate consists of multiple CCEs. The value n corresponding to the carrier indicator field is described in equation (19) below _CI PDCCH candidates of a search space set of active DL BWP of a serving cell of (b)CCE indexes of the corresponding aggregation level L.

Note that equation (19) can be used for any CSS where z=0. For example, for any USS, one of the following methods may be used. In one method of the present invention, a method of manufacturing a semiconductor device, Y _p,-X2 ＝n _RNTI Not equal to 0, a for pmod3=0 _p =39827, for pmod3=1, a _p =39829, for pmod3=2, a _p =39839, and d=65537, wherein +.>Is the index of the first slot of the span. />CCE indexes used to determine each PDCCH candidate in the span. In another method, -> Y _p,-X2 ＝n _RNTI Not equal to 0, a for pmod3=0 _p =39827, for pmod3=1, a _p =39829, for pmod3=2, a _p =39839, and d=65537, wherein +.>Is the index of the first slot of the span. />CCE indexes used to determine each PDCCH candidate in the span.

Additionally, in equation (19), i=0, …, L-1. Expression N _CCE,p Is CORESETp and CCEs (from 0 to N _CCE,p -1 number). Expression n _CI Is a carrier indicator field value if the UE is configured with a carrier indicator field by cross carrier scheduling config for a serving cell on which the PDCCH is monitored; otherwise, include n _CI =0 for any CSS. Expression typeCan be equal to->Wherein->Is the sum n of the UE configured to monitor for aggregation level L _CI Number of PDCCH candidates of the search space set s of the corresponding serving cell. Note that for any CSS, the +.>Additionally, for USS, < >>N, which is all configurations of the search space set s at the CCE aggregation level L _CI Value +.>Is a maximum value of (a). Additionally, for n _RNTI Is a C-RNTI.

After the combination (X) _s ,Y _s ) In a third approach based on multi-slot PDCCH monitoring capability, where X _s And Y _s Is the number of consecutive time slots, X _s Groups of time slots are contiguous and non-overlapping, and Y _s Time slot at X _s Within a time slot. First group X _s The slots start from the beginning of the subframe. Two consecutive Y _s The start of a group of time slots is defined by X _s The time slots are separated. UE according to (X _s ,Y _s ) To determine a span configured with a plurality of PDCCH candidates.

In a first method for determining CCE allocations for a search space set s associated with coreetp, the value n corresponding to the carrier indicator field is described in equation (20) below _CI Active DL BWP of serving cell of (a) in a slotPDCCH candidates of search space set in +.>Corresponding CCE indexes for aggregation level L.

Here, for PDCCH monitoring per slot or per span, k=1; and for the combination (X _s ,Y _s ) X of each group (1) _s PDCCH monitoring of individual slots, k=x _s . Note that, for any CSS,additionally, for USS, < >> Y _p,-1 ＝n _RNTI Not equal to 0, a for pmod3=0 _p =39827, for pmod3=1, a _p =39829, for pmod3=2, a _p =39839, and d=65537. Additionally, in equation (20), i=0, …, L-1. Expression N _CCE,p Is CORESETp and CCEs (from 0 to N _CCE,p -1 number). Expression n _CI Is a carrier indicator field value if the UE is configured with a carrier indicator field by cross carrier scheduling config for a serving cell on which the PDCCH is monitored; otherwise, include n _CI =0 for any CSS. Expression->Can be equal to->Wherein->Is the sum n of the UE configured to monitor for aggregation level L _CI Number of PDCCH candidates of the search space set s of the corresponding serving cell. Note that, for any CSS,additionally, for USS, < >>N, which is all configurations of the search space set s at the CCE aggregation level L _CI Value +.>Is a maximum value of (a). Additionally, for n _RNTI Is a C-RNTI.

In a second method for determining CCE allocations for a search space set s associated with coreetp, the association with a carrier indicator field value n is described in equation (21) below _CI Active DL BWP of serving cell of (a) in a slotPDCCH candidates of search space set in +.>Corresponding CCE indexes for aggregation level L.

Here, for PDCCH monitoring per slot or per span, k=1; and for the combination (X _s ,Y _s ) X of each group (1) _s PDCCH monitoring of individual slots, k=x _s . Note that, for any CSS,in addition to this, the method can be used,for USS, the +.> Y _p,-1 ＝n _RNTI Not equal to 0, a for pmod3=0 _p =39827, for pmod3=1, a _p =39829, for pmod3=2, a _p =39839, and d=65537. Additionally, in equation (21), i=0, …, L-1. Expression N _CCE,p Is CORESETp and CCEs (from 0 to N _CCE,p -1 number). Expression n _CI Is a carrier indicator field value if the UE is configured with a carrier indicator field by cross carrier scheduling config for a serving cell on which the PDCCH is monitored; otherwise, include n _CI =0 for any CSS. Expression->Can be equal to->Wherein->Is the sum n of the UE configured to monitor for aggregation level L _CI Number of PDCCH candidates of the search space set s of the corresponding serving cell. Note that, for any CSS,additionally, for USS, < >>N, which is all configurations of the search space set s at the CCE aggregation level L _CI Value +.>Is a maximum value of (a). Additionally, for n _RNTI The RNTI value of (2) is C-RNTI。

In a third method for the search space set s associated with coreetp, the value n corresponding to the carrier indicator field is described in equation (22) below _CI Active DL BWP of serving cell of (a) in a slot PDCCH candidates of search space set in +.>Corresponding CCE indexes for aggregation level L.

Here, for PDCCH monitoring per slot or per span, k=1; and for the combination (X _s ,Y _s ) X of each group (1) _s PDCCH monitoring of individual slots, k=x _s . Note that, for any CSS,additionally, for USS, < >>Y _p,-1 ＝n _RNTI Not equal to 0, a for pmod3=0 _p =39827, for pmod3=1, a _p =39829, for pmod3=2, a _p =39839, and d=65537. Additionally, in equation (22), i=0, …, L-1. Expression N _CCE,p Is CORESETp and CCEs (from 0 to N _CCE,p -1 number). Expression n _CI Is a carrier indicator field value if the UE is configured with a carrier indicator field by cross carrier scheduling config for a serving cell on which the PDCCH is monitored; otherwise, include n _CI =0 for any CSS. Expression->Can wait forIn->Wherein->Is the sum n of the UE configured to monitor for aggregation level L _CI Number of PDCCH candidates of the search space set s of the corresponding serving cell. Note that, for any CSS,additionally, for USS, < >>N, which is all configurations of the search space set s at the CCE aggregation level L _CI Value +.>Is a maximum value of (a). Additionally, for n _RNTI Is a C-RNTI.

In a fourth method for the search space set s associated with coreetp, the value n corresponding to the carrier indicator field is described in equation (23) below _CI Active DL BWP of serving cell of (a) in a slotPDCCH candidates of search space set in +.>Corresponding CCE indexes for aggregation level L.

Here, for PDCCH monitoring per slot or per span, k=1; and for the combination (X _s ,Y _s ) X of each group (1) _s PDCCH monitoring of individual slots, k=x _s . Note that it is possible to make a simple solution,for any of the CSS's,additionally, for USS, < >> Y _p,-1 ＝n _RNTI Not equal to 0, a for pmod3=0 _p =39827, for pmod3=1, a _p =39829, for pmod3=2, a _p =39839, and d=65537. Additionally, in equation (23), i=0, …, L-1. Expression N _CCE,p Is CORESETp and CCEs (from 0 to N _CCE,p -1 number). Expression n _CI Is a carrier indicator field value if the UE is configured with a carrier indicator field by cross carrier scheduling config for a serving cell on which the PDCCH is monitored; otherwise, include n _CI =0 for any CSS. Expression->Can be equal to->Wherein->Is the sum n of the UE configured to monitor for aggregation level L _CI Number of PDCCH candidates of the search space set s of the corresponding serving cell. Note that for any CSS, the +. >Additionally, for USS, < >>N, which is all configurations of the search space set s at the CCE aggregation level L _CI Value +.>Is a maximum value of (a). Additionally, for n _RNTI Is a C-RNTI.

In a fifth method for the search space set s associated with coreetp, the value n corresponding to the carrier indicator field is described in equation (24) below _CI Active DL BWP of serving cell of (a) in a slotPDCCH candidates of search space set in +.>Corresponding CCE indexes for aggregation level L. />

Here, for PDCCH monitoring per slot or per span, k=1; and for the combination (X _s ,Y _s ) X of each group (1) _s PDCCH monitoring of individual slots, k=x _s . Note that, for any CSS,additionally, for USS,Y _p,-1 ＝n _RNTI not equal to 0, a for pmod3=0 _p =39827, for pmod3=1, a _p =39829, for pmod3=2, a _p =39839, and d=65537. Additionally, in equation (24), i=0, …, L-1. Expression N _CCE,p Is CORESETp and CCEs (from 0 to N _CCE,p -1 number). Expression n _CI Is a carrier indicator field value if the UE is configured with a carrier indicator field by cross carrier scheduling config for a serving cell on which the PDCCH is monitored; otherwise, include n _CI =0, for any one ofWhat CSS. Expression->Can be equal to->Wherein->Is the sum n of the UE configured to monitor for aggregation level L _CI Number of PDCCH candidates of the search space set s of the corresponding serving cell. Note that for any CSS, the +.>Additionally, for USS, < >>N, which is all configurations of the search space set s at the CCE aggregation level L _CI Value +.>Is a maximum value of (a). Additionally, for n _RNTI Is a C-RNTI.

Fig. 8 illustrates a structure of a UE according to an embodiment of the present disclosure.

Referring to fig. 8, a ue 800 may include a controller 810, a transceiver 820, and a memory 830. However, all of the illustrated components are not required. The UE 800 may be implemented by more or fewer components than shown in fig. 8. Further, according to another embodiment, the controller 810 and the transceiver 820 and the memory 830 may be implemented as a single chip.

UE 800 may correspond to the UE described above. For example, UE 800 may correspond to the UE in fig. 3.

The foregoing components will now be described in detail.

The controller 810 may include one or more processors or other processing devices that control the proposed functions, processes, and/or methods. The operation of the UE 800 may be implemented by a controller 810.

Transceiver 820 may include an RF transmitter for up-converting and amplifying a transmitted signal and an RF receiver for down-converting the frequency of a received signal. However, according to another embodiment, transceiver 820 may be implemented by more or fewer components than shown in the components.

The transceiver 820 may be connected to the controller 810 and transmit and/or receive signals. The signal may include control information and data. In addition, the transceiver 820 may receive signals through a wireless channel and output the signals to the controller 810. The transceiver 820 may transmit a signal output from the controller 810 through a wireless channel.

The memory 830 may store control information or data included in a signal obtained by the UE 800. Memory 830 may be coupled to controller 820 and store at least one instruction or protocol or parameter for the proposed function, procedure and/or method. Memory 830 may include read-only memory (ROM) and/or random-access memory (RAM) and/or hard disk and/or CD-ROM and/or DVD and/or other storage devices.

Fig. 9 illustrates a structure of a Base Station (BS) according to an embodiment of the present disclosure.

Referring to fig. 9, a bs 900 may include a controller 910, a transceiver 920, and a memory 930. However, all of the illustrated components are not required. BS 900 may be implemented by more or fewer components than shown in fig. 9. Further, according to another embodiment, the controller 910 and the transceiver 920 and the memory 930 may be implemented as a single chip.

BS 900 may correspond to the gNB described in this disclosure. For example, BS 900 may correspond to the gNB in fig. 2.

The foregoing components will now be described in detail.

The controller 910 may include one or more processors or other processing devices that control the proposed functions, processes, and/or methods. The operation of the BS 900 may be implemented by the controller 910.

Transceiver 920 may include an RF transmitter for up-converting and amplifying transmitted signals and an RF receiver for down-converting the frequency of received signals. However, according to another embodiment, transceiver 920 may be implemented with more or fewer components than shown in the components.

The transceiver 920 may be connected to the controller 910 and transmit and/or receive signals. The signal may include control information and data. In addition, the transceiver 920 may receive signals through a wireless channel and output the signals to the controller 910. The transceiver 920 may transmit a signal output from the controller 910 through a wireless channel.

The memory 930 may store control information or data included in signals obtained by the BS 900. The memory 930 may be coupled to the controller 910 and store at least one instruction or protocol or parameter for the proposed function, procedure and/or method. Memory 930 may include Read Only Memory (ROM) and/or Random Access Memory (RAM) and/or hard disk and/or CD-ROM and/or DVD and/or other storage devices.

The above-described flowcharts illustrate example methods that may be implemented in accordance with the principles of the present disclosure, and various changes may be made to the methods illustrated in the flowcharts herein. For example, while shown as a series of steps, individual steps in each figure may overlap, occur in parallel, occur in a different order, or occur multiple times. In another example, steps may be omitted or replaced with other steps. Although the figures illustrate different examples of user equipment, various changes may be made to the figures. For example, the user device may include any number of each component in any suitable arrangement. In general, the drawings are not intended to limit the scope of the disclosure to any particular configuration. Further, while the figures illustrate an operating environment in which the various user device features disclosed in this patent document may be used, these features may be used in any other suitable system. 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 embrace such alterations and modifications that fall within the scope of the appended claims. Any description of the present application should not be construed as implying that any particular element, step, or function is an essential element which must be included in the scope of the claims. The scope of patented subject matter is defined by the claims.

Claims (14)

1. A User Equipment (UE) in a communication system, comprising:

a transceiver; and

a processor configured to:

determining a combination (X, Y) of consecutive time slots, wherein X and Y are positive integers, Y < X, and

receiving a first subcarrier spacing (SCS) configuration mu in Y time slots of the X time slots ₁ A first Physical Downlink Control Channel (PDCCH),

wherein the X time slots are numbered n on the first cell _start Starts in time slot of (c), and

wherein:

wherein n is _d Is a frame number, and

wherein the method comprises the steps ofIs to configure mu for the first SCS ₁ Is a number of slots per frame.

2. The UE of claim 1, wherein the processor is further configured to:

receiving a second SCS configuration mu in a time slot on a second cell ₂ Is used for the second PDCCH of the (c),

wherein mu ₁ >μ ₂ ，

Wherein the first SCS configuration is mu ₁ =5 or μ ₁ ＝6，

Wherein the subcarrier spacing of the first PDCCH isAnd a multiple of 15kHz, and,

wherein the first time slot of two consecutive groups of Y time slots is separated by X time slots, and

wherein the combination (X, Y) is a configuration mu at the first SCS ₁ Is a set of predetermined combinations of (a) and (b).

3. The UE of claim 1, wherein the processor is further configured to:

a first amount of information of a search space set associated with PDCCH reception on a first cell is received,

And (3) determining:

determining that the number of PDCCH receptions in the X slots is greater than the maximum number of PDCCH receptions per group of X slots based on the first number of search space sets, an

A second number of sets of search spaces is determined based on the first number of sets of search spaces,

wherein:

the reception of the first PDCCH is based on a second number of search space sets,

the number of first PDCCH receptions is not greater than the maximum number of PDCCH receptions per group of X slots, and

the first cell is the primary cell.

4. The UE of claim 1, wherein the processor is further configured to:

information of a plurality of cells is transmitted,

wherein the information indicates that the reception of the first SCS configuration mu is based on a combination (X, Y) for scheduling on each of the plurality of cells ₁ Is a predetermined maximum number of PDCCHs.

5. A Base Station (BS) in a communication system, comprising:

a transceiver; and

a processor configured to:

determining a combination (X, Y) of consecutive time slots, wherein X and Y are positive integers, Y < X, and

transmitting a first subcarrier spacing (SCS) configuration mu in Y slots of the X slots ₁ A first Physical Downlink Control Channel (PDCCH),

wherein the X time slots are numbered n on the first cell _start Starts in time slot of (c), and

wherein:

wherein n is _f Is a frame number, and

wherein the method comprises the steps ofIs to configure mu for the first SCS ₁ Is a number of slots per frame.

6. The BS of claim 5, wherein the processor is further configured to:

transmitting a second SCS configuration mu with a second SCS configuration mu in a time slot on a second cell ₂ And (2) a second PDCCH of (2), and

wherein mu ₁ >μ ₂ ，

Wherein the first SCS configuration is mu ₁ =5 or μ ₁ ＝6，

Wherein the subcarrier spacing of the first PDCCH isAnd a multiple of 15kHz, and,

wherein the first time slot of two consecutive groups of Y time slots is separated by X time slots, and

wherein the combination (X, Y) is a configuration mu at the first SCS ₁ Is included in the set of predetermined combinations of (a) and (b).

7. The BS of claim 5, wherein the processor is further configured to:

information of a plurality of cells is received,

wherein the information indicates that the reception of the first SCS configuration mu is based on a combination (X, Y) for scheduling on each of the plurality of cells ₁ Is capable of a predetermined maximum number of PDCCHsForce.

8. A method performed by a User Equipment (UE) in a communication system, the method comprising:

determining a combination (X, Y) of consecutive time slots, wherein X and Y are positive integers, Y < X, and

receiving a first subcarrier spacing (SCS) configuration mu in Y time slots of the X time slots ₁ A first Physical Downlink Control Channel (PDCCH),

wherein the X time slots are numbered n on the first cell _start Starts in time slot of (c), and

wherein:

wherein n is _f Is a frame number, and

wherein the method comprises the steps ofIs to configure mu for the first SCS ₁ Is a number of slots per frame.

9. The method of claim 8, further comprising:

receiving a second SCS configuration mu in a time slot on a second cell ₂ Is used for the second PDCCH of the (c),

wherein mu ₁ >μ ₂ ，

Wherein the first SCS configuration is mu ₁ =5 or μ ₁ ＝6，

Wherein the subcarrier spacing of the first PDCCH is 2 ^μ1 And a multiple of 15kHz, and,

wherein the first time slot of two consecutive groups of Y time slots is separated by X time slots, and

wherein the combination (X, Y) is a configuration mu at the first SCS ₁ Is a set of predetermined combinations of (a) and (b).

10. The method of claim 8, further comprising:

a first amount of information of a search space set associated with PDCCH reception on a first cell is received,

and (3) determining:

determining that the number of PDCCH receptions in the X slots is greater than the maximum number of PDCCH receptions per group of X slots based on the first number of search space sets, an

A second number of sets of search spaces is determined based on the first number of sets of search spaces,

wherein:

the reception of the first PDCCH is based on a second number of search space sets,

The number of first PDCCH receptions is not greater than the maximum number of PDCCH receptions per group of X slots, and

the first cell is the primary cell.

11. The method of claim 8, further comprising:

information of a plurality of cells is transmitted,

wherein the information indicates that the reception of the first SCS configuration mu is based on a combination (X, Y) for scheduling on each of the plurality of cells ₁ Is a predetermined maximum number of PDCCHs.

12. A method performed by a Base Station (BS) in a communication system, the method comprising:

determining a combination (X, Y) of consecutive time slots, wherein X and Y are positive integers, Y < X, and

transmitting a first subcarrier spacing (SCS) configuration mu in Y slots of the X slots ₁ A first Physical Downlink Control Channel (PDCCH),

wherein the X time slots are numbered n on the first cell _start Starts in time slot of (c), and

wherein:

wherein n is _f Is a frame number, and

wherein the method comprises the steps ofIs to configure mu for the first SCS ₁ Is a number of slots per frame.

13. The method of claim 12, further comprising:

transmitting a second SCS configuration mu with a second SCS configuration mu in a time slot on a second cell ₂ And (2) a second PDCCH of (2), and

wherein mu ₁ >μ ₂ ，

Wherein the first SCS configuration is mu ₁ =5 or μ ₁ ＝6，

Wherein the subcarrier spacing of the first PDCCH isAnd a multiple of 15kHz, and,

wherein the first time slot of two consecutive groups of Y time slots is separated by X time slots, and

wherein the combination (X, Y) is a configuration mu at the first SCS ₁ Is included in the set of predetermined combinations of (a) and (b).

14. The method of claim 12, further comprising:

information of a plurality of cells is received,

wherein the information indicates that the reception of the first SCS configuration mu is based on a combination (X, Y) for scheduling on each of the plurality of cells ₁ Is a predetermined maximum number of PDCCHs.