CN117242882A - Transmitting uplink channels using frequency hopping - Google Patents
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Abstract
The present disclosure relates to 5G or 6G communication systems for supporting higher data transmission rates. Apparatus and method for transmitting an uplink channel using frequency hopping. A method for a User Equipment (UE) includes: first information indicating to transmit channels on different time slots using the same power is received, and second information indicating a first number of time slots for transmitting the channels. The method comprises the following steps: a first time window is determined for transmitting a channel based on the first information and the second information, and a first power for transmitting the channel over the first time window. The method further comprises the steps of: the channel is transmitted over a first time window with a first power.
Description
Technical Field
The present disclosure relates generally to wireless communication systems, and more particularly, to transmitting uplink channels using frequency hopping.
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 6GHz" frequency band such as 3.5GHz, but also in a "above 6GHz" frequency band called millimeter waves, including 28GHz and 39GHz. Further, it has been considered to implement a 6G mobile communication technology (referred to as a super 5G system) in a terahertz frequency band (such as a 95GHz to 3THz frequency band) in order to achieve a transmission rate 50 times faster than that of a 5G mobile communication technology and an ultra-low delay of one tenth of that of the 5G mobile communication technology.
At the beginning of the development of 5G mobile communication technology, in order to support services and meet performance requirements with enhanced mobile broadband (emmbb), ultra-reliable low latency communication (URLLC), and mass machine type communication (mctc), the following work is already in progress: standardization regarding beamforming and massive MIMO to mitigate radio wave path loss in millimeter waves and increase radio wave transmission distances; support digital techniques for efficient use of millimeter wave resources (such as operating multiple subcarrier spacings), and dynamic operation of the slot formats; initial access technology supporting multi-beam transmission and broadband, definition and operation of BWP (bandwidth part); new channel coding methods such as an LDPC (low density parity check) code for a large amount of data transmission and a polarity code for transmitting control information with high reliability; l2 pretreatment; and a network slice for setting a private network dedicated to a specific service.
Currently, improvements and performance enhancements with respect to the initial 5G mobile communication technology are under discussion for services supported by the 5G mobile communication technology, and physical layer standardization with respect to the following technologies has been ongoing: such as V2X (vehicle network), to assist the autonomous vehicle in making driving decisions and enhancing user convenience based on vehicle-transmitted vehicle location and status information; NR-U (new radio unlicensed), intended to meet system operation requirements associated with various specifications in the unlicensed band; NR UE saves electricity; a non-terrestrial network (NTN) that is a direct communication of UE satellites for providing coverage in areas where communication with terrestrial networks is unavailable, as well as positioning.
Furthermore, standardization of air interface architecture/protocols is underway with respect to the following technologies: such as the industrial internet of things (UNT), techniques for supporting new services by interworking and fusion with other industries; an IAB (integrated access and backhaul) for setting a node for network service area extension by supporting a wireless backhaul link and an access link in an integrated manner; mobility enhancements including conditional handoffs and DAPS (dual active protocol stack) handoffs; two-step random access (two-step RACH to NR) for simplifying the random access procedure. Standardization of system architecture/services is also underway with respect to the following technologies: a 5G baseline architecture (such as a service-based architecture or a 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 the UE location.
As 5G mobile communication systems are commercialized, exponentially growing networking 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 networking devices will be necessary. For this reason, new researches related to augmented reality (XR) are being planned to effectively support AR (augmented reality), VR (virtual reality), MR (mixed reality), etc., to improve 5G performance and reduce complexity by using Artificial Intelligence (AI) and Machine Learning (ML), AI service support, metauniverse service support, and unmanned aerial vehicle communication.
Furthermore, this development of the 5G mobile communication system will not only serve as a basis for developing the following technologies: setting a new waveform of coverage in a terahertz frequency band of a 6G mobile communication technology, such as a multi-antenna transmission technology of full-dimensional MIMO (FD-MIMO); array antennas and large-scale antennas; metamaterial-based lenses and antennas for improved terahertz band signal coverage; high-dimensional spatial multiplexing techniques using OAM (orbital angular momentum); RIS (reconfigurable smart surface); it also serves as a basis for developing the following technologies: frequency efficiency of the 6G mobile communication technology is improved and full duplex technology of the system network is improved; AI (artificial intelligence) based communication techniques, by utilizing satellites and AI from the design stage, to achieve system optimization and internalize end-to-end AI support functions; the next generation of distributed computing technology enables services with complexity exceeding the UE operational capability limit by utilizing ultra-high performance communication and computing resources.
With global technological activity from various candidate technologies in industry and academia, the development of 5G or NR mobile communication is increasingly gathering in recent years. Candidate enabling techniques for 5G/NR mobile communications include: large-scale antenna technology from traditional cellular frequency bands to high frequencies to set beamforming gain and support increased capacity; new waveforms, such as new Radio Access Technology (RAT), to flexibly accommodate various services/applications of different needs; a new multiple access scheme supporting large-scale connections, etc.
Disclosure of Invention
[ technical problem ]
With the development of communication systems, there is a need for a method or apparatus for efficiently transmitting uplink channels.
Technical scheme
The present disclosure relates to transmitting uplink channels over a number of time slots with the same power using frequency hopping.
In one embodiment, a User Equipment (UE) is provided. The UE includes a transceiver configured to: first information indicating to transmit channels on different time slots using the same power is received, and second information indicating a first number of time slots for transmitting the channels. The UE also includes a processor operably coupled to the transceiver. The processor is configured to: a first time window of the transmit channel is determined based on the first information and the second information, and a first power for the transmit channel over the first time window is determined. The transceiver is further configured to: the channel is transmitted over a first time window with a first power.
In another embodiment, a Base Station (BS) is provided. The BS includes a transceiver configured to: first information indicating to transmit channels on different time slots using the same power is transmitted, and second information indicating a first number of time slots for transmitting the channels. The BS also includes a processor operably coupled to the transceiver. The processor is configured to: a first time window of the receive channel is determined based on the first and second information, and a first power for the receive channel over the first time window is determined. The transceiver is further configured to: the channel is received over a first time window using a first power.
In yet another embodiment, a method is provided. The method comprises the following steps: first information indicating to transmit channels on different time slots using the same power is received, and second information indicating a first number of time slots for transmitting the channels. The method comprises the following steps: a first time window of the transmit channel is determined based on the first information and the second information, and a first power for the transmit channel over the first time window is determined. The method further comprises the steps of: the channel is transmitted over a first time window with a first power.
Other technical features may be readily apparent to one skilled in the art from the following figures, descriptions, and claims.
[ advantageous effects ]
According to embodiments of the present disclosure, methods or apparatuses for efficiently transmitting an uplink channel 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 exemplary wireless network according to an embodiment of the present disclosure;
fig. 2 illustrates an exemplary BS according to an embodiment of the present disclosure;
fig. 3 illustrates an exemplary UE according to an embodiment of the present disclosure;
Fig. 4 illustrates an exemplary wireless transmission path according to an embodiment of the present disclosure;
fig. 5 illustrates an exemplary wireless receive path according to an embodiment of the present disclosure;
fig. 6 shows a block diagram of an exemplary transmitter architecture using Orthogonal Frequency Division Multiplexing (OFDM) in accordance with an embodiment of the present disclosure;
fig. 7 shows an exemplary receiver block diagram using OFDM in accordance with an embodiment of the present disclosure;
fig. 8 illustrates an exemplary timing diagram of time durations of frequency hopping according to an embodiment of the present disclosure;
fig. 9 illustrates an exemplary method for UEs configured for demodulation reference signal (DM-RS) bundling and for frequency hopping in accordance with an embodiment of the present disclosure;
fig. 10 illustrates an exemplary method for a UE configured for DM-RS bundling and for frequency hopping in accordance with an embodiment of the present disclosure;
fig. 11 illustrates an exemplary method for a UE configured for DM-RS bundling and for frequency hopping in accordance with an embodiment of the present disclosure;
fig. 12 illustrates an exemplary set of frequency hopping patterns according to an embodiment of the present disclosure;
fig. 13 illustrates an example method for determining a frequency hopping pattern with repeated Physical Uplink Shared Channel (PUSCH) transmissions, in accordance with an embodiment of the disclosure;
Fig. 14 illustrates an exemplary method for determining a frequency hopping pattern with repeated PUSCH transmissions in accordance with an embodiment of the present disclosure;
fig. 15 illustrates an example method for determining a frequency hopping pattern with repeated PUSCH transmissions in accordance with an embodiment of the disclosure;
fig. 16 illustrates an exemplary method for determining transmit power for PUSCH transmission with repetition using frequency hopping in accordance with an embodiment of the present disclosure;
fig. 17 illustrates an exemplary method for determining transmit power for PUSCH transmission with repetition using frequency hopping in accordance with an embodiment of the present disclosure;
fig. 18 illustrates an exemplary frequency hopping pattern configured/indicated to a terminal according to an embodiment of the present disclosure;
fig. 19 illustrates an exemplary frequency hopping pattern configured/indicated to a terminal according to an embodiment of the present disclosure;
FIG. 20 illustrates an example diagram of a time window according to an embodiment of the present disclosure;
fig. 21 illustrates an exemplary method for determining frequency resources for transmitting Physical Uplink Control Channel (PUCCH) repetition in accordance with an embodiment of the present disclosure;
fig. 22 illustrates an example method for determining frequency resources for transmitting Physical Uplink Control Channel (PUCCH) repetition in accordance with an embodiment of the present disclosure;
Fig. 23 illustrates an example diagram of a UE configured with PUCCH-DM-RS bundling enabled and configured to perform frequency hopping for PUCCH transmissions in accordance with an embodiment of the present disclosure;
fig. 24 illustrates an example diagram of a last time slot in a first frequency wish and a first time slot in a second frequency wish in accordance with an embodiment of the present disclosure;
fig. 25 illustrates a structure of a UE according to an embodiment of the present disclosure; and
fig. 26 illustrates a structure of a BS according to an embodiment of the present disclosure.
Detailed Description
Before proceeding with the following detailed description, it may be advantageous to set forth definitions of certain words and phrases used throughout 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, encompass both direct and indirect communication. The terms "include" and "comprise," as well as derivatives thereof, are intended to be included without limitation. The term "or" is inclusive, meaning and/or. The phrase "associated with …" and derivatives thereof are intended to include, be included within …, interconnect with …, include, be included within …, be connected to or coupled with …, be coupled to or coupled with …, be in communication with …, cooperate with …, be interlaced, juxtaposed, proximate, be bound to or bound with …, have the characteristics of …, have the relationship of … and …, and 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. The phrase "at least one," when used with a list of items, means that different combinations of one or more of the listed items may 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 one of the following combinations: 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 implemented 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, examples, 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 exclude wired, wireless, optical, or other communication links that transmit transient electrical signals or other transient signals. Non-transitory computer readable media include media capable of permanently storing data, as well as media capable of storing data and subsequently rewriting data, such as a rewritable optical disk or an erasable storage device.
Definitions for certain other 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 26, 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 understand that the principles of the present disclosure may be implemented in any suitably arranged system or device.
The following documents are incorporated by reference into the present disclosure as if fully set forth herein: 3GPP TS 38.211v17.1.0, "NR, physical channel and modulation (Physical channels and modulation)" ("REF 1"); 3GPP TS 38.212v17.1.0, "NR, multiplex and channel coding (Multiplex and channel coding)" ("REF 2"); 3GPP TS 38.213v17.1.0, "NR, physical layer flow for control (Physical Layer Procedures for control)" ("REF 3"); 3GPP TS 38.214v17.1.0, "NR, physical layer flow for data (Physical Layer Procedures for data)" ("REF 4"); 3GPP TS 38.321v16.7.0, "NR, multimedia access control protocol specification (Medium Access Control (MAC) protocol specification)" ("REF 5"); and 3GPP TS 38.331v16.7.0, "NR, radio resource control protocol specification (Radio Resource Control (RRC) protocol specification)" ("REF 6").
In order to meet the increasing demand for wireless data services since the deployment of fourth generation (4G) communication systems, efforts have been made to develop and deploy improved fifth generation (5G) or quasi-5G/NR communication systems. Thus, a 5G or quasi 5G communication system is also referred to as a "super 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, such as the 28GHz or 60GHz band, to achieve higher data rates, or in a lower frequency band, such as the 6GHz band, 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, large-scale antenna techniques, and the like are discussed in 5G communication systems.
Further, in the 5G communication system, development of system network improvement is being performed 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.
Since certain embodiments of the present disclosure may be implemented in a 5G system, a discussion of the 5G system and the frequency bands associated therewith is incorporated by reference. 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 conjunction with any frequency band. For example, aspects of the present disclosure may also be applied to deployments of 5G communication systems, 6G, or even later versions that may use the terahertz (THz) band.
Depending on the network type, the term "Base Station (BS)" may refer to any component (or set 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), 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), HSPA, wi-Fi 802.11a/b/g/n/ac, etc. The terms "BS," "gNB," and "TRP" may be used interchangeably in this disclosure to indicate a network-based infrastructure component that provides wireless access to a remote terminal. Furthermore, the term "user equipment" or "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 type of network. 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. For convenience, the term "User Equipment (UE)" is used in this patent document to refer to a remote wireless device that wirelessly accesses the gNB, whether the UE is a mobile device (such as a mobile phone or smart phone) or is generally considered a stationary device (such as a desktop computer or vending machine). The UE may also be a car, truck, van, drone or any similar machine or device in such machines.
Fig. 1-3 below describe various embodiments implemented in a wireless communication system and 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 different embodiments that may be implemented. The various embodiments of the present disclosure may be implemented in any suitably arranged communication system.
Fig. 1 illustrates an exemplary wireless network 100 according to an embodiment of the present 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, the wireless network 100 includes various gndebs (bNG) such as base stations BS101, BS102, and BS 103. BS101 communicates with BS102 and BS 103. BS101 is also in communication with at least one network 130, such as the internet, a proprietary Internet Protocol (IP) network, or other data network.
BS102 provides wireless broadband access to network 130 for a plurality of first User Equipment (UEs) within coverage area 120 of BS 102. The plurality of first 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); UE 115, which may be located in a second home (R); and UE 116, which 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 plurality of second UEs within coverage area 125 of BS 103. The plurality of second UEs includes UE 115, UE 116, UE 117, and UE 118. In some embodiments, one or more of BS 101-BS 103 may communicate with each other and UE 111-UE 118 using 5G/NR, long Term Evolution (LTE), long term evolution-advanced (LTE-a) LTE, wiMAX, wiFi, or other wireless communication technology.
In some embodiments, multiple terminals (such as UE 117, UE 118, and UE 119) may communicate directly with each other through inter-device communication. In some implementations, a UE (such as UE 119) is located outside of the network coverage area, but may communicate with other UEs within the network coverage area (such as UE 118) or other UEs outside of the network coverage area.
The dashed lines illustrate the approximate extent of coverage areas 120 and 125, which are shown as approximately circular for illustration and explanation purposes only. It should be clearly understood that coverage areas associated with BSs, such as coverage areas 120 and 125, may have other shapes including irregular shapes, depending on the configuration of the BS and variations in the radio environment associated with natural and man-made obstructions.
As described in more detail below, one or more of BS101, BS102, and BS103 include a 2D antenna array as described in embodiments of the present disclosure. In some implementations, one or more of BS101, BS102, and BS103 support codebook designs and structures for systems with 2D antenna arrays. In addition, as described in more detail below, one or more of UEs 111-119 include circuitry, programming, or a combination thereof that transmits an uplink channel using frequency hopping. In certain embodiments, one or more of BS101 through BS103 comprise circuitry, programming, or a combination thereof that transmits uplink channels using frequency hopping.
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 and 103 may communicate directly with network 130 and provide UEs with direct wireless broadband access to network 130. Further, BS101, BS102, and/or BS103 may provide access to other or additional external networks, such as external telephone networks or other types of data networks.
Fig. 2 illustrates an exemplary BS102 according to an embodiment of the present disclosure. The embodiment of BS102 shown in fig. 2 is for illustration only, and BS101 and BS103 of fig. 1 may have the same or similar configurations. However, the BS has various configurations, and fig. 2 does not limit the scope of the present disclosure to any particular embodiment of the BS.
As shown in fig. 2, BS102 includes a plurality of antennas 205a through 205n, a plurality of Radio Frequency (RF) transceivers 210a through 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.
The RF transceivers 210a to 210n receive incoming RF signals from the antennas 205a to 205n, such as signals transmitted by UEs in the wireless network 100. The RF transceivers 210a to 210n down-convert the input 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, web data, email, or interactive video game data) from controller/processor 225. TX processing circuitry 215 encodes, multiplexes, and/or digitizes the output baseband data to produce a processed baseband or IF signal. RF transceivers 210a through 210n receive the output 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 through 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 RF transceivers 210 a-210 n, RX processing circuitry 220, and TX processing circuitry 215 to receive uplink channel signals and transmit downlink channel signals in accordance with 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 transmitting uplink channels using frequency hopping. Any of a variety of other functions may be supported in BS102 by controller/processor 225. In some embodiments, controller/processor 225 includes 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 or out of memory 230 as needed to perform the processing. In some implementations, the controller/processor 225 supports communication between entities, such as web real-time communication (RTC). For example, the controller/processor 225 may move data into or out of the memory 230 according to the process being run.
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 through a 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 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.
As described in more detail below, the transmit path and the receive path of BS102 (implemented using radio frequency transceivers 210a-210n, TX processing circuitry 275, and/or RX processing circuitry 270) support communication using Frequency Division Duplex (FDD) units and Time Division Duplex (TDD) units.
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 that route data between different network addresses. As another specific example, although shown as including a single TX processing circuit 215 example and a single RX processing circuit 220 example, BS102 may include multiple TX processing circuit 215 examples and multiple RX processing circuit 220 examples (such as one example per RF transceiver). 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 exemplary UE 116 according to an embodiment of the present disclosure. The embodiment of UE 116 shown in fig. 3 is for illustration only, and UE 111-115 and UE 117-119 of fig. 1 may have the same or similar configuration. However, the UE has a variety of configurations, 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, an 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 input RF signal transmitted by a BS of the wireless network 100 from the antenna 305. The RF transceiver 310 down-converts the input 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 output baseband data (such as web data, email, or interactive video game data) from processor 340. TX processing circuitry 315 encodes, multiplexes, and/or digitizes the output baseband data to produce 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 that 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 RF transceiver 310, RX processing circuit 325, and TX processing circuit 315 to receive uplink channel signals and transmit downlink channel signals in accordance with well-known principles. In some embodiments, processor 340 includes at least one microprocessor or microcontroller.
Processor 340 is also capable of executing other processes and programs resident in memory 360, such as processing for beam management. Processor 340 may move data into or out of memory 360 as needed to perform the processing. In some implementations, 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 a carrier. 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.
The processor 340 is also coupled to an 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, a control key, or an ultrasonic input device. The touch panel may, for example, 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.
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 (such as from a website) and/or at least limited graphics.
Memory 360 is coupled to 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 smart phone, the UE may be configured to operate as other types of mobile or stationary devices.
Fig. 4 and 5 illustrate an exemplary wireless transmit path and an exemplary wireless receive path according to the present disclosure. In the following description, the transmit path 400 of fig. 4 may be described as being implemented in a BS (such as BS 102), and 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, receive path 500 is configured to support transmitting uplink channels using frequency hopping, 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 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 modulation (such as Quadrature Phase Shift Keying (QPSK) or Quadrature Amplitude Modulation (QAM)) to the input bits to generate a sequence of frequency domain modulation symbols. Serial-to-parallel block 410 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 BS102 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 parallel time-domain output symbols (such as multiplexing) from size N IFFT block 415 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 a radio channel, and performs a reverse operation with the BS102 at the UE 116.
As shown in fig. 5, down-converter 555 down-converts the received signal to baseband frequency and remove cyclic prefix block 560 removes the cyclic prefix to generate a serial time domain baseband signal. The serial-to-parallel block 565 converts the time-domain baseband signal to 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 BS101 through BS103 may implement a transmit path 400 similar to that shown in fig. 4 that is transmitted in the downlink to UEs 111 through 116, and may implement a receive path 500 similar to that shown in fig. 5 that is received in the uplink from UEs 111-118. Similarly, each of UEs 111-118 may implement a transmit path 400 for transmitting in the uplink to BSs 101-103 and may implement a receive path 500 for receiving in the downlink from BSs 101-103.
Further, each of the UEs 111 to 119 may implement a transmission path 400 for transmitting to another one of the UEs 111 to 119 in the sidelink, and may implement a reception path 500 for receiving from another one of the UEs 111 to 119 in the sidelink.
Each of the components in fig. 4 and 5 may be implemented using hardware 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 by 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.
Furthermore, 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 is understood 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.
The unit on a cell for Downlink (DL) signaling or for Uplink (UL) signaling is referred to as a slot and may include one or more symbols. The Bandwidth (BW) unit is referred to as a Resource Block (RB). One RB includes a plurality of Subcarriers (SCs). For example, a slot may have a duration of 1 millisecond and an RB may have a bandwidth of 180kHz and include 12 with an inter-SC spacing of 15kHzAnd SC. The subcarrier spacing (SCS) may be determined to be 2 by SCS configuration μ μ 15kHz. A unit of one subcarrier on one symbol is called a Resource Element (RE). A unit of one RB on one symbol is called a Physical RB (PRB).
The DL signal includes a data signal transmitting information content, a control signal transmitting DL Control Information (DCI), and a Reference Signal (RS), also called a pilot signal. The gNB, such as BS 102, transmits data information or DCI over a corresponding Physical DL Shared Channel (PDSCH) or Physical DL Control Channel (PDCCH). PDSCH or PDCCH may be transmitted on a variable number of slot symbols including one slot symbol.
PDCCH transmissions are made on a plurality of Control Channel Elements (CCEs) from a predetermined number of CCE sets, referred to as CCE aggregation levels. PDSCH transmissions are scheduled by a DCI format, or semi-persistent scheduling (SPS) configured by higher layers and activated by a DCI format. PDSCH reception by the UE provides one or more Transport Blocks (TBs), where the TBs are associated with hybrid automatic repeat request (HARQ) processes indicated by HARQ process number fields in DCI formats that schedule PDSCH reception or activate SPS PDSCH reception, and Redundancy Versions (RVs) indicated by RV fields in DCI formats when incremental redundancy is used to encode the TBs. The TB transmission may be an initial transmission or a retransmission identified as a New Data Indicator (NDI) field received by a scheduled PDSCH in a DCI format, which is scheduled to provide a TB retransmission for a given HARQ process number.
In some embodiments, the gNB (such as BS 102) transmits one or more of a plurality of types of RSs including channel state information RS (CSI-RS) and demodulation RS (DM-RS), see also REF1.
The CSI-RS is mainly used for the UE to perform measurements and provide Channel State Information (CSI) to the gNB. For channel measurement or time tracking, non-zero power CSI-RS (NZP CSI-RS) resources are used. For Interference Measurement Reporting (IMR), CSI interference measurement (CSI-IM) resources (see also REF 3) are used. The CSI-IM resources may also be associated with a zero power CSI-RS (ZP CSI-RS) configuration. The UE may determine CSI-RS reception parameters through DL control signaling or higher layer signaling (such as RRC signaling) from the gNB (see also REF 5). DM-RSs are typically transmitted only within BW of the corresponding PDCCH or PDSCH, and the UE may use the DM-RSs to demodulate data or control information.
A UE, such as UE 116, may monitor a plurality of candidate locations for a corresponding potential PDCCH reception to decode a plurality of DCI formats in a slot, e.g., as described in REF 3. The DCI format includes Cyclic Redundancy Check (CRC) bits for the UE to confirm correct detection of the DCI format. The DCI format type is identified by a Radio Network Temporary Identifier (RNTI) that scrambles the CRC bits (see also REF 2).
For DCI formats that schedule PDSCH or Physical Uplink Shared Channel (PUSCH) to a single UE, the RNTI may be a cell RNTI (C-RNTI), or a configuration scheduling RNTI (CS-RNTI), or a Modulation and Coding Scheme (MCS) cell RNTI (MCS-C-RNTI) and serve as a UE identifier. Hereinafter, for the sake of brevity, the C-RNTI is mentioned only when needed. A UE, such as UE 116, may receive/monitor a PDCCH for detecting DCI formats with CRCs scrambled by a C-RNTI according to a UE-specific search space (USS). For DCI format 0_0 and DCI format 1_0, which schedule PUSCH transmission and PDSCH reception, respectively, to a UE, the UE may also be configured to monitor the corresponding PDCCHs according to a Common Search Space (CSS). For DCI formats 0_1 and 0_2 mainly used for scheduling PUSCH transmission, or for DCI formats 1_1 and 1_2 mainly used for scheduling PDSCH reception, the ue monitors the corresponding PDCCH according to USS. PDCCH monitoring implies reception of PDCCH candidates and decoding of potential DCI formats.
For DCI formats of PDSCH scheduling transmission System Information (SI), the RNTI may be SI-RNTI. For DCI formats of PDSCH scheduling a set Random Access Response (RAR), the RNTI may be RA-RNTI. For DCI formats of PDSCH scheduling paging information, RNTI may be P-RNTI. The UE monitors the PDCCHs for these DCI formats according to the corresponding CSS on the primary cell. There are also a plurality of other RNTIs provided to the UE by the UE-specific RRC signaling, which are associated with DCI formats setting various control information, and have corresponding PDCCHs for the UE to monitor according to type3 CSS on the primary or secondary cell. Such DCI formats include: DCI format 2_0, set up DL, UL or slot structure of flexible/reserved symbol mode on the number of slots; DCI format 2_2, set Transmit Power Control (TPC) commands for PUSCH or Physical Uplink Control Channel (PUCCH) transmission; DCI format 2_3, sets TPC commands for SRS transmission and also potentially triggers SRS transmission on multiple cells; etc., and the corresponding CSS is referred to as Type3-PDCCH CSS.
In some embodiments, the UL signal further includes a data signal conveying information content, a control signal conveying UL Control Information (UCI), a DM-RS associated with data or UCI demodulation, a phase tracking RS (PT-RS) for phase tracking in the symbols of PUSCH, and a Sounding RS (SRS) enabling the gNB to perform UL channel measurements, and a Random Access (RA) preamble enabling the UE to perform random access (see also REF 1). The UE transmits data information or UCI through a corresponding Physical UL Shared Channel (PUSCH) or PUCCH. PUSCH or PUCCH may be transmitted on a variable number of symbols in a slot comprising one symbol. When the UE simultaneously transmits data information and UCI, the UE may multiplex in PUSCH or transmit PUSCH with data information and PUCCH with UCI at least when transmission is performed on different cells according to UE capability.
Some UL RSs include DM-RSs, PT-RSs, and SRSs. DM-RS is typically sent within BW of the corresponding PUSCH or PUCCH. The gNB (such as BS 102) may use DM-RS to demodulate information in the corresponding PUSCH or PUCCH. SRS is transmitted by a UE, such as UE 116, to provide UL CSI to a gNB, such as BS102, and for TDD systems, a Precoding Matrix Indicator (PMI) for DL transmissions is also provided. Furthermore, the UE may transmit a Physical Random Access Channel (PRACH) as part of the random access procedure or for other purposes.
UCI may include: HARQ Acknowledgement (ACK) information indicating whether decoding of a TB or Code Block Group (CBG) in a PDSCH is correct or incorrect; a Scheduling Request (SR) indicating whether there is data to be transmitted in a buffer of the UE; and CSI reporting enabling the gNB to select appropriate parameters for PDSCH/TB or PDCCH/DCI format transmission to the UE. A UE, such as UE 116, transmits a PUCCH on a primary cell of a cell group. When the TB decodes correctly, the HARQ-ACK information is a positive ACK; or if the TB decoding is incorrect, HARQ-ACK information is acknowledged (NACK). The ACK may be represented by a binary value of '1' and the NACK may be represented by a binary value of '0'.
DL reception and UL transmission by a UE, such as UE 116, may be configured to occur in respective DL bandwidth portions (BWP) and UL BWP. The DL/UL BWP is less than or equal to the DL/UL bandwidth of the serving cell. DL transmissions from the gNB and UL transmissions from the UE may be based on Orthogonal Frequency Division Multiplexing (OFDM) waveforms including variants using DFT precoding, which is referred to as DFT-spread OFDM (see also REF 1).
Fig. 6 shows a block diagram 600 of an exemplary transmitter structure using OFDM in accordance with an embodiment of the present disclosure. Fig. 7 shows a block diagram 700 of an exemplary receiver structure using OFDM in accordance with an embodiment of the present disclosure.
The transmitter structure shown in block 600 and the receiver structure shown in block 700 may be similar to the RF transceivers 210a-210n of fig. 2 and the RF transceiver 310 of fig. 3. The example block diagram 600 of fig. 6 and the block diagram 700 of fig. 7 are for illustration only, and other embodiments may be used without departing from the scope of the present disclosure.
As shown in block 600, information bits 610, such as DCI bits or data bits, are encoded by an encoder 620, and the rate is matched to the allocated time/frequency resources by a rate matcher 630 and modulated by a modulator 640. Subsequently, the modulated coded symbols and demodulation reference signals (DMRS) or CSI-RS 650 are mapped to SCs by an SC mapping unit 660 using inputs from a BW selector unit 665, IFFT is performed by a filter 670, cyclic Prefix (CP) is added by a CP inserting unit 680, and the resulting signal is filtered by a filter 690 and transmitted by a Radio Frequency (RF) unit as transmission bits 695.
As shown in block 700, the received signal 710 is filtered by a filter 720, the CP removal unit 730 removes the CP, the filter 740 applies a fast FFT, the SC demapping unit 750 demaps the SC selected by the BW selector unit 755, the received symbols are demodulated by a channel estimator and demodulator unit 760, the rate matcher 770 resumes rate matching, and the resulting bits are decoded by a decoder 780 to provide information bits 790.
In some embodiments, a UE (such as UE 116) multiplexes HARQ-ACK information in the PUCCH that the UE is in time sequence value K by a set of slots 1 In (a) associated with HARQ-ACK informationPDSCH in the last DCI format is transmitted in a slot indicated by the value of the harq_feedback timing indicator field or indicated by higher layers in the case of SPS PDSCH reception as described in REF 3. When the UE has received the configuration of the PUCCH resource set, the UE determines the PUCCH resource set to multiplex in PUCCH based on the UCI payload and determines PUSCH resources in the PUCCH resource set based on a PUCCH Resource Index (PRI) in the DCI format.
The UE may also multiplex UCI in PUSCH transmission. The UE then bases on the number of UCI information bits, the spectral efficiency (or MCS) of PUSCH transmission, and the scaling factor as described in REF2To determine the number of UCI-coded modulation symbols. Among REs available for UCI multiplexing in PUSCH, the UE may further provide a parameter α, which defines the number of available REs available for UCI multiplexing in PUSCH, from higher layers, as described in REF2, such as all REs except for RE in a symbol before the first symbol with DM-RS RE or in a symbol excluding PT-RS RE. When the number of HARQ-ACK information bits is less than or equal to 2, the number of REs for HARQ-ACK multiplexing is reserved in PUSCH in order to avoid the following errors: the gNB expects to multiplex HARQ-ACK information in PUSCH, but the UE does not detect the associated DCI format, and the data information symbols to be multiplexed in reserved REs are punctured. When the number of HARQ-ACK information bits is greater than 2, rate matching is used between the data information symbols and the HARQ-ACK information symbols. For CSI multiplexing in PUSCH, CSI symbols are placed at the first PUSCH symbol in PUSCH not used for DM-RS multiplexing.
In some embodiments, a UE (such as UE 116) does not expect HARQ-ACK information that would be sent to the same TRP in a different PUCCH, multiplexed in PUSCH transmission or multiplexed in PUCCH transmission. In order to multiplex HARQ-ACK information in PUSCH, the coded modulated HARQ-ACK symbols are placed after the first symbol of PUSCH for DM-RS multiplexing or after the first consecutive DM-RS symbols. The multiplexing operation depends on the number of HARQ-ACK information bits. When PUSCH is transmitted using frequency hopping, multiplexing of the UCI symbols described above is applied in each frequency hopping.
The gNB may also schedule the number of slots N when the gNB (such as BS 102) schedules a UE (such as UE 116) to transmit a PUSCH or PUCCH in multiple repetitions w Indicated as a time window in which the UE expects to transmit at a constant power and phase. Number of time slots N w And may also be the same as the number of consecutive slots in which the UE transmits multiple repetitions without frequency hopping. For example, to maintain the same power for PUSCH repetition, the UE may be expected to be at N w TPC commands are not processed during a slot in order to be written in N w Maintaining a constant phase during each slot, the UE can be expected to be at N w The same precoding is repeatedly applied to the PUSCH or PUCCH during each slot. The number of slots may be the same as or different from the number of PUSCH repetitions. This operation is referred to herein as at N w DM-RS bundling on the number of slots of a single. The gNB can be determined by comparing N in a time window w The DM-RS symbols transmitted in each slot are filtered to obtain channel estimates for coherent demodulation of the data/control symbols.
In some embodiments, when PUSCH or PUCCH transmissions have repetition and hopping, the time window in which a UE (such as UE 116) is expected to transmit at a constant power and phase may be defined as the same as or less than the time period in which the UE transmits on a single hop. The gNB (such as BS 102) may configure a frequency hopping pattern that the UE may use for PUSCH or PUCCH transmissions with repetition. Based on the configured hopping pattern and the indicated time window, the UE transmits on multiple repetitions or slots or symbols with a constant power and phase. In order to improve frequency resource allocation and enhance scheduling flexibility of the network for future frequency resources, it would be beneficial for the gNB to indicate the frequency hopping pattern, the UE may use multiple repetitions for PUSCH or PUCCH transmissions or the number of slots, where for PUSCH the transmission on a slot is a repetition of the same TB transmitted in at least another slot or a transmission of a part of the TB transmitted on the number of slots.
A UE, such as UE 116, may operate in TDD and FDD modes. Depending on whether the UE is in TDD or FDD mode, the frequency hopping pattern may need to be changed more dynamically in time and/or include more hops or locations within a given time period to improve performance by exploiting the frequency diversity of the channel. For example, the availability of slots for repeated PUSCH or PUCCH transmissions is typically time-invariant in FDD, while in TDD it may depend on the first repeated slot for a given UL-DL configuration. Furthermore, the tradeoff between improving channel estimation and increasing the frequency hopping diversity of PUSCH or PUCCH transmissions repeated by a UE may depend on the frequency selectivity of the channel medium and the signal-to-interference-and-noise ratio (SINR) experienced by the UE. Thus, to quickly adapt to channel medium variations experienced by UEs, it is beneficial to be specific to the UE's frequency hopping pattern and to signal the frequency hopping pattern to each UE in a dynamic manner. In another example, when the UE operates in a Supplementary Uplink (SUL) band, uplink coverage is generally better than in a non-SUL band, so the frequency hopping pattern may also be adapted to more favorable transmission conditions. Since the transmission conditions in TDD/FDD/SUL systems are different, it would be beneficial for the gNB to configure a set of hopping patterns, where the set includes, for example, hopping patterns that can be optimized for transmission under certain conditions.
In some embodiments, when the gNB (such as BS 102) schedules a UE (such as UE 116) to transmit PUSCH or PUCCH in multiple repetitions and in frequency hopping, and the gNB also indicates the number of slots in which the UE is expected to transmit repetitions with constant power and phase as a time window, the number of slots may be the same as the number of slots in which the UE transmits multiple repetitions in the same frequency resource. Here, the number of slots may also include non-consecutive slots. Similar to the case of consecutive slots without frequency hopping, in order to maintain the same power for PUSCH or PUCCH repetition transmitted in the same frequency resource, the UE does not process a Transmit Power Control (TPC) command during a slot of a time window, and in order to maintain a constant phase, the UE repeatedly applies the same precoding to PUSCH or PUCCH during a slot of a time window. The number of slots of the time window may be the same or different from the number of slots repeated in the same frequency resource of the frequency hopping. This operation is referred to in this disclosure as DM-RS bundling over multiple non-contiguous time slots.
Accordingly, embodiments of the present disclosure consider the need to adjust the frequency pattern of PUSCH or PUCCH transmissions with repetition to improve the reception reliability of PUSCH or PUCCH, improve the tradeoff between DM-RS bundling and frequency hopping, and improve the flexibility of frequency resource scheduling.
Embodiments of the present disclosure also contemplate that a hopping pattern needs to be determined from a set of hopping patterns for PUSCH or PUCCH transmission repetition.
Embodiments of the present disclosure also contemplate the need to determine the number of slots in which a UE is expected to transmit PUSCH or PUCCH transmission repetition at a constant power and phase.
Note that any of the same or similar principles may be applied with respect to PUSCH transmissions with repetition: (i) having a repeated PUCCH transmission, (ii) a TB transmission over a number of slots, (iii) having a TB transmission over a number of slots in which the TB is repeated, or (iv) a different TB transmission over a number of slots.
Embodiments of the present disclosure describe transmitting an uplink channel using frequency hopping. This is described in examples and embodiments such as fig. 8-11.
Fig. 8 shows an example of a timing diagram 800 of the duration of frequency hopping according to an embodiment of the present disclosure. Fig. 9-11 illustrate exemplary methods 900, 1000, and 1100 for a UE configured for DM-RS bundling and for frequency hopping, respectively, according to embodiments of the present disclosure. The steps of method 900 of fig. 9, method 1000 of fig. 10, and method 1100 of fig. 11 may be performed by any of UEs 111-119 of fig. 1, such as UE 116 of fig. 3. The timing diagram 800 and methods 900, 1000, and 1100 are for illustration only, and other implementations may be used without departing from the scope of the present disclosure.
In some embodiments, a UE (such as UE 116) is provided with UL-DL TDD configuration and is configured for DM-RS bundling. The UE may also be provided with a length L of the time domain window for DM-RS bundling. Here, L may be defined in time slots, symbols, or repetitions as units of time.
The phase-time and phase-transmission time are maintained equal to the same time units when the UE is configured for frequency hopping of PUSCH repetition type a (frequency hopping for PUSCH transmission scheduled by DCI format 0_2 by a higher layer parameter frequency hopingdci-0-2 in the PUSCH-Config, or frequency hoping for PUSCH transmission scheduled by a DCI format other than 0_2 provided in the PUSCH-Config, or frequency hopping for PUSCH transmission configured provided in the configurable grantconfigug, or frequency hopping for PUSCH repetition type B by the UE (frequency hopingdci-0-2 for PUSCH transmission scheduled by DCI format 0_2 provided in the PUSCH-Config, frequency hopingdci-0-1 for PUSCH transmission scheduled by DCI format 0_1 provided in the PUSCH-Config, or frequency hoping for PUSCH transmission configured PUSCH transmission type 1 provided in the configurable grant) and the UE is a consistent time unit. If L is not provided, the period for which the UE maintains the same transmit power and phase consistency is the duration N of frequency hopping. Thus, if the UE is provided with a value for PUSCH-DMRS-Bundling that enables DM-RS Bundling, the UE does not apply cumulative TPC commands and/or maintains the same precoding and/or the same spatial filter for repeated transmissions for PUSCH repeated transmissions for the frequency hopping duration.
In some embodiments, a UE (such as UE 116) is configured for frequency hopping and is also configured for DM-RS bundling with a time domain window length of L. Here, if L is greater than N, the time interval for the UE to perform DM-RS bundling will be limited by the frequency hopping duration N. If L is less than N, PUSCH repetition within time interval L is part of the first DM-RS bundle and remaining repetition within the frequency hopping duration is part of the second DM-RS bundle or more DM-RS bundles. Similar to other DM-RS bundles, the second DM-RS bundle has a maximum length L. Thus, the UE is not expected to be configured with a time domain window for DM-RS bundling with a length L greater than the hopping duration N.
Fig. 8 shows an exemplary timing diagram 800 of a frequency hopping time duration of 6 slots and PUSCH transmission with 8 repetitions. Timing diagram 800 includes a case 810 and a case 820. As shown, slot 5 is not available for PUSCH retransmission. The unavailability of slot 5 may be determined by UL-DL TDD configuration, and/or overlap with higher priority scheduled or configured transmissions, and/or by an indication of a Slot Form Indicator (SFI).
In case 810, a UE (such as UE 116) is provided with a length L of a time domain window for DM-RS bundling of four slots. Since L is less than the frequency hopping duration, the maximum DM-RS bundling size will be equal to L. The UE applies the first DM-RS bundling and the second DM-RS bundling for four slots of the first four repetitions in the first frequency hopping, and applies the third DM-RS bundling for the remaining three repetitions transmitted in the second frequency hopping. The second DM-RS bundle would include a single DM-RS and is equivalent to not using DM-RS bundles for the fifth PUSCH repetition in slot 6.
In case 820, the UE (such as UE 116) is not provided with L. The UE applies a first DM-RS bundle including all slots in a first frequency hopping, and applies a second DM-RS bundle to the remaining three repetitions transmitted in a second frequency hopping. The applicability of DM-RS bundling on non-consecutive slots may be subject to other limitations, such as maximum gap between slots or symbols between two consecutive repetitions. In case 820, it is assumed that a gap of one slot is allowed between consecutive repetitions in the DM-RS bundle, and the DM-RS bundle may include repetitions before and after the gap. When a slot of one slot is not allowed, the UE applies the first DM-RS bundling on a repetition before the slot and applies the second DM-RS bundling on a repetition after the bundling.
A UE (such as UE 116) may be configured for DM-RS bundling and not provide L. In this example, when the UE is configured for PUSCH transmission with inter-slot hopping and repetition type a, and is scheduled by a DCI format to transmit PUSCH on multiple physical or available slots, where the available slots are slots available for transmitting PUSCH repetitions as indicated by an indication in the UL-DL configuration and/or PDSCH, and configured with DM-RS bundling operations and not providing L, the UE performs DM-RS bundling on time periods of hopping frequencies corresponding to a frequency hopping scheme indicated by frequency hopping and a set of frequency hopping patterns configured by frequency hopping hopped lists, where frequency hopping and frequency hopping hopped lists are applicable to DCI formats 0_0 and 0_1 of 'PUSCH-reptpea'.
A UE (such as UE 116) may be configured for DM-RS bundling and not provide L. In this example, when the UE is configured for PUSCH transmission with repetition type B, the UE performs DM-RS bundling over a period of frequency hopping corresponding to a frequency hopping scheme indicated by frequencyhopingdci-0-1 and a set of frequency hopping patterns configured by frequencyhopingoffsetlistsdci-0-1, where frequencyhopingdci-0-1 and frequencyhopingoffsetlistsdci-0-1 are applicable to DCI format 0_1 of 'PUSCH-RepTypeB'.
A UE (such as UE 116) may be configured for DM-RS bundling and not provide L, and the UE is configured for type 2 configuration type grant activation. In this example, the UE performs DM-RS bundling over a period of frequency hopping corresponding to the frequency hopping scheme indicated by the frequencyHoppingDCI-0-2 and the set of frequency hopping patterns configured by the frequencyHoppingOffsetLitsDCI-0-2. When the pusch-ReptypeInductDCI-0-2 is set to "pusch-ReptypeA", if enabled, a frequency hopping scheme may be selected between 'intra-slot frequency hopping' and 'inter-slot frequency hopping'. When the pusch-ReptypeInductDCI-0-2 is set to "pusch-ReptypeB", if enabled, a frequency hopping scheme may be selected between "inter-repetition frequency hopping" and "inter-slot frequency hopping".
The method 900 shown in the figure depicts an exemplary procedure in which a UE according to the present disclosure is configured for DM-RS bundling and frequency hopping.
In step 910, a UE (such as UE 116) is configured for frequency hopping and for DM-RS bundling. In step 920, the UE is instructed/configured to transmit PUSCH with repetition. In step 930, the UE determines a DM-RS bundling size equal to the frequency hopping duration. In step 940, the UE applies DM-RS bundling within the determined DM-RS bundling for PUSCH repeated transmission.
The method 1000 shown in fig. 10 describes an exemplary procedure in which a UE according to the present disclosure is configured for DM-RS bundling and frequency hopping.
In step 1010, a UE (such as UE 116) is configured for PUSCH transmission with repetition type a and for frequency hopping. In step 1020, the ue is configured for DM-RS Bundling operation and is provided with PUSCH-DMRS-Bundling parameter values with DM-RS Bundling enabled. In step 1030, it is determined whether the length L of the time domain window is provided. When the length L of the time domain window for DM-RS bundling is provided to the UE (as determined in step 1030), the UE transmits PUSCH at a constant power and phase over a period of the length L in step 1040. Alternatively, when the length L of the time domain window for DM-RS bundling is not provided (as determined in step 1030), the UE transmits PUSCH at a constant power and phase over a time period of frequency hopping in step 1050.
The method 1100 shown in fig. 11 describes an exemplary procedure in which a UE according to the present disclosure is configured for DM-RS bundling and frequency hopping.
In step 1110, a UE (such as UE 116) is configured for PUSCH transmission with repetition type a and for frequency hopping. In step 1120, the UE is configured for DM-RS Bundling operation and is provided with a PUSCH-DMRS-Bundling parameter value with DM-RS Bundling enabled and a value L of a time domain window. In step 1130, the UE determines if L is greater than or equal to the hop duration. When L+.gtoreq.hop-duration (as determined in step 1130), the UE determines in step 1140 that the DM-RS bundle size is equal to the hop-duration. When L is less than the frequency hopping duration (as determined in step 1130), the UE determines in step 1150 that the DM-RS bundle size is equal to L.
In some embodiments, after a UE (such as UE 116) determines a DM-RS bundle size comprising a plurality of consecutive slots, some slots within the determined DM-RS bundle may not be available for uplink transmission. For example, the DM-RS bundle size may be (i) equal to the configured time domain length L (such as in step 1150 of fig. 11), or (ii) equal to the frequency hopping duration (such as in step 1140 of fig. 11), then some of the time slots within the determined DM-RS bundle may not be available for uplink transmission. Whether the UE applies DM-RS bundling on all repetitions in the determined DM-RS bundling or on parts of the repetition, e.g., the repetition before the unavailable slot is the first DM-RS bundling and the repetition after the unavailable slot is the second DM-RS bundling, may be limited by other conditions. For example, one condition may be that the transmission gap between two consecutive repetitions is not greater than one slot or not greater than one or more symbols.
Note that the embodiments described for PUSCH transmission are also applicable to PUCCH transmission. For example, when a UE (such as UE 116) is configured for DM-RS Bundling operation for PUSCH transmission and is provided with PUSCH-DMRS-Bundling parameters, the UE may also be configured for DM-RS Bundling operation for PUCCH transmission and is provided with PUCCH-DMRS-Bundling parameters. The UE may be provided with a first length of a DM-RS bundled time domain window for PUSCH transmission and a second length of a DM-RS bundled time domain window for PUCCH transmission, wherein the first and second lengths may be the same or different. It is also possible that the length of the time domain window is provided only for PUSCH transmission and not for PUCCH transmission, and that DM-RS bundling for PUCCH will be applied over a hopping duration or over multiple repetitions, subject to the limitations of other conditions. It is also possible that the UE is configured for DM-RS Bundling for both PUSCH and PUCCH and is provided with DMRS-Bundling parameters that enable DM-RS Bundling for both PUSCH and PUCCH transmissions, if provided, with time domain windows of the same length.
Although fig. 8 shows a timing diagram 800, fig. 9 shows a method 900, fig. 10 shows a method 1000, and fig. 11 shows a method 1100, various changes may be made to fig. 8-11. For example, while method 900, method 1000, and method 1100 are illustrated 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, these steps may be omitted or replaced by other steps. For example, the steps of method 900, method 1000, and method 1100 may be performed in a different order.
Embodiments of the present disclosure also describe indicating a frequency hopping pattern from a set of patterns and configuring a set of frequency hopping patterns. This is described in examples and embodiments such as fig. 12-15.
Fig. 12 illustrates a diagram 1200 of an exemplary set of frequency hopping patterns, according to an embodiment of the present disclosure. Fig. 13-15 illustrate exemplary methods 1300, 1400, and 1500, respectively, for determining a frequency hopping pattern for repeated PUSCH transmissions in accordance with embodiments of the present disclosure. The steps of method 1300 of fig. 13, method 1400 of fig. 14, and method 1500 of fig. 15 may be performed by any one of UEs 111-119 of fig. 1 (such as UE 11 of fig. 3) 6. The diagram 1200 and the methods 1300, 1400, and 1500 are for illustration only, and other embodiments may be used without departing from the scope of the present disclosure.
In some implementations, the gNB (such as BS102) A UE, such as UE 116, may be scheduled at a number N rep Transmitting PUSCH in multiple repetitions over multiple corresponding slots of (a) and also from N rep The number N of time slots is indicated in the time slots w Which defines the DM-RS bundling size that the UE is expected to transmit with the same power and phase. It is also possible that the number of time slots N w Is not directly indicated, but is determined based on the number of repetitions. For example, for N over two hopping intervals rep The number of slots N is described in equation (1) with repetition w . By utilizing the additional frequency diversity provided by frequency hopping to transmit PUSCH, the reliability of PUSCH reception may be improved. The gNB may schedule the UE to repeatedly and frequency hop transmit PUSCH and indicate the frequency hopping pattern from a set of patterns configured.
N w ＝N rep /4 or N w ＝N rep /2 (1)
In some embodiments, a gNB (such as BS 102) may configure a set of frequency hopping patterns to a UE (such as UE 116) through a PUSCH-Config Information Element (IE) or higher layer parameters in rrc-ConfiguredUplinkGrant IE. The gNB may indicate to the UE one or more hopping patterns from the configured set of hopping patterns for transmitting one or more PUSCH repetitions, or for transmitting on one or a number of slots, or for transmitting on one or more symbol groups. For PUSCH repetition type B, a set of symbols may be symbols in one or more repetitions.
In a first approach, the gNB (such as BS 102) indicates one hopping pattern from a set of hopping patterns, where the set includes a first pattern corresponding to hopping in each repetition, a corresponding second pattern corresponding to hopping every two repetitions, a third pattern corresponding to hopping every four repetitions, and so on. It is also possible that the pattern is defined by the number of slots rather than by each multiple repetition.
The diagram 1200 shown in fig. 12 shows an example of a set of hopping patterns with three patterns, where the hopping duration in pattern #1 (FH # 1) is equal to one repetition (or one slot), the hopping duration in pattern #2 (FH # 2) is equal to two repetitions (or two slots), and the hopping duration in pattern #3 (FH # 3) is equal to four repetitions (or four slots). Or four time slots). The duration of the fourth mode may be equal to half of the number of PUCCH transmission repetitions (or slots). In another example, the set of frequency hopping patterns includes patterns in which the first pattern includes frequencies that do not overlap with the second pattern.
In some implementations, the gNB (such as BS 102) may indicate one of the frequency hopping patterns and the number of repetitions or slots of the UE using the indicated pattern. It is also possible that the number of repetitions/slots N defining the size of DM-RS bundle w As are the number of repetitions/slots per hop in the indicated hopping pattern. It is also possible that when there is no additional indication and the UE is configured to transmit PUSCH repetition with frequency hopping, the number of repetitions per frequency hopping/slot equals the number of repetitions N rep Half of (a) is provided.
In a second approach, the gNB (such as BS 102) indicates two hopping patterns from a set of hopping patterns. The UE (such as UE 116) may alternately perform PUSCH repetition, transmitting one repetition on the frequency resources indicated by the first mode, and transmitting the next repetition on the frequency resources indicated by the second mode. A UE, such as UE 116, may also transmit multiple repetitions in the frequency resources of the indicated pattern.
The method 1300 shown in fig. 13 describes an exemplary procedure for a UE to determine a frequency hopping pattern for repeated PUSCH transmissions in accordance with the present disclosure.
In step 1310, a UE (such as UE 116) is indicated by a higher layer configuration or by a DCI format (configuration/indication) to repeatedly transmit PUSCH. In step 1320, the UE is configured by a higher layer to repeatedly transmit PUSCH. In step 1330, the UE indicates a frequency hopping pattern from the configured set by the DCI format. In step 1340, the UE determines frequency resources for transmitting PUSCH repetition based on the indicated frequency hopping pattern.
In a process similar to that described in fig. 13, the gNB (such as BS 102) may also instruct a UE (such as UE 116) to use the number of repetitions of the indicated pattern to determine the frequency resources.
The method 1400 shown in fig. 14 describes an exemplary procedure for a UE to determine a frequency hopping pattern for repeated PUSCH transmissions in accordance with the present disclosure.
In step 1410, a UE (such as UE 116) is configured/instructed to repeatedly transmit PUSCH. In step 1420, the UE is configured by higher layers to repeatedly transmit a set of hopping patterns for PUSCH. In step 1430, the UE indicates the frequency hopping pattern and the number of repetitions N from the configured set by the DCI format for PUSCH transmission rep-hop Or number of time slots N slot-hop . In step 1440, the UE determines frequency resources for transmitting PUSCH repetition based on the indicated frequency hopping pattern.
In some implementations, the gNB (such as BS 102) is adapted to the frequency hopping pattern. In order to improve the reliability of uplink transmission, considering characteristics of a channel medium, availability of frequency resources, and UE capability, it may be performed based on the need to adjust a tradeoff between improving channel estimation and enhancing frequency diversity. For example, the gNB may configure one or more sets of frequency hopping patterns, one of which includes a pattern that provides enhanced frequency diversity and a pattern that enables more accurate channel estimation. For example, some modes are beneficial for transmissions of a first UE that experiences a frequency selective channel or a relatively large SINR, and the remaining modes are beneficial for transmissions of a second UE that experiences a frequency non-selective channel or a small SINR.
A method 1500, as shown in fig. 15, describes an exemplary procedure for a UE to determine a frequency hopping pattern for repeated PUSCH transmissions in accordance with the present disclosure.
In step 1510, a UE (such as UE 116) is configured/instructed to repeatedly transmit PUSCH. In step 1520, the UE is configured by higher layers to repeatedly transmit one or more sets of hopping patterns for PUSCH. In step 1530, the UE indicates a frequency hopping pattern from one of the configuration sets by the DCI format. In step 1540, the UE determines frequency resources for transmitting PUSCH repetition based on the indicated frequency hopping pattern.
Although fig. 12 shows diagram 1200, fig. 13 shows method 1300, fig. 14 shows method 1400, and fig. 15 shows method 1500, various changes may be made to fig. 12-15. For example, when method 1300, method 1400, and method 1400 are shown as a series of steps, the various steps can overlap, occur in parallel, occur in a different order, or occur multiple times. In another example, these steps may be omitted or replaced by other steps. For example, the steps of method 1300, method 1400, and method 1500 may be performed in a different order.
Embodiments of the present disclosure also describe indicating the number of slots/repetitions of DM-RS bundling over temporally non-consecutive slots/repetitions with frequency hopping. This is described in examples and embodiments such as fig. 16-20.
Fig. 16 and 17 illustrate exemplary methods 1600 and 1700, respectively, for determining transmit power for PUSCH transmissions with frequency hopping, according to embodiments of the present disclosure. Fig. 18 and 19 show diagrams 1800 and 1900, respectively, of exemplary frequency hopping patterns configured/indicated to a UE according to an embodiment of the present disclosure. Fig. 20 shows an example graph 2000 of a time window according to an embodiment of the present disclosure. The steps of method 1600 of fig. 16 and method 1700 of fig. 17 may be performed by any of UEs 111-119 of fig. 1 (such as UE 116 of fig. 3). Method 1600 and method 1700, and diagrams 1800, 1900, and 2000 are for illustration only, and other embodiments may be used without departing from the scope of the present disclosure.
In some embodiments, when a UE (such as UE 116) is configured to repeatedly transmit PUSCH using frequency hopping, the configured/indicated frequency hopping pattern may be such that two or more repetitions that are not consecutive in time are transmitted in the same frequency resource. For example, when the UE is instructed to frequency mode fh#2 (as illustrated in fig. 12), wherein two consecutive repetitions are transmitted using frequency resources in the first hopping interval (h 1) and the next two consecutive repetitions are transmitted using frequency resources in the second hopping interval (h 2), and the UE is configured/instructed to transmit PUSCH with 16 repetitions. The first set of repetitions comprising repetitions 1, 2, 5, 6, 9, 10, 13, 14 is transmitted using the frequency resources in h1, and the second set of repetitions comprising repetitions 3, 4, 7, 8, 11, 12, 15, 16 is transmitted using the frequency resources in h 2. The UE may also be instructed to expect the UE to transmit at a constant power and phase for a number of consecutive slots N w′ . In the present example, if the indicated number of time slots N w′ Is 8, and assuming that the UE transmits one PUSCH repetition per slot, the UE transmits a first set of PUSCH repetitions at a first constant power and phase, andand transmitting the PUSCH repetition of the second group at a second constant power and phase. The UE updates but does not apply the closed loop power control adjustment state based on the applicable TPC commands for PUSCH transmissions within the group.
In the above example, when the indicated number of slots N w′ Is 4, and assuming that the UE transmits one PUSCH repetition per slot, the UE is at constant power P a1 The first four PUSCH repetitions of the first group are transmitted (repetition 1, 2, 5, 6) and at a second constant power P b1 The next four PUSCH repetitions of the first group are transmitted (repetitions 9, 10, 13, 14). For the second set of repetitions, the UE is at constant power P a2 The first four repetitions (repetitions 3, 4, 7, 8) are transmitted and at constant power P b2 The other four repetitions of the second set are sent (repetitions 11, 12, 15, 16). The same UE behavior as power applies to the phase repeated for PUSCH transmissions. The requirement for the above-described repetition group to maintain constant power and phase is limited by certain conditions, such as the UE having no other simultaneous transmissions during some repetitions of the repetition group in the same frequency band, or the UE having no suspension of repetitions due to the priority of another transmission, etc. During transmission of a set of repetitions, the UE skips applying TPC commands and does not update the closed loop power control adjustment state but accumulates TPC commands, updates the corresponding closed loop power control adjustment state, and applies the latest updated value when the window changes to determine the power for PUSCH transmission repetition. For example, the UE transmits at the same transmission power P a1 Transmitting repetition 1, 2, 5, 6 and at different power P b1 Transmission repetition 9, 10, 13, 14, wherein power P b1 Calculated by applying a closed loop power control adjustment state that is updated using TPC commands accumulated during transmission repetitions 1, 2, 5, 6.
The method 1600 shown in fig. 16 describes an exemplary procedure for a UE to determine transmit power for repeated PUSCH transmissions using frequency hopping in accordance with the present disclosure.
In step 1610, a UE (such as UE 116) is configured/instructed to repeatedly transmit PUSCH using frequency hopping. The UE is also configured/indicated a time window over the number of time slots. In step 1620, the UE indicates a hopping pattern having a first hopping and a second hopping by the DCI format. In step 1630, the UE determines a power at which PUSCH repetition is performed within a time window in the first frequency hopping, and a power at which PUSCH repetition is performed within the time window in the second frequency hopping. In step 1640, the UE transmits PUSCH repetition in a first frequency hop at a first power and PUSCH repetition in a second frequency hop at a second power.
A method 1700 shown in fig. 17 describes an exemplary process by which a UE according to the present disclosure determines transmit power to repeat PUSCH transmissions using frequency hopping. Fig. 18 and 19 illustrate example diagrams 1800 and 1900 of an example frequency hopping pattern configured/indicated to a UE.
In step 1710, a UE (such as UE 116) is configured/instructed to repeatedly transmit PUSCH using frequency hopping. In step 1720, the UE is configured/instructed to have a frequency hopping pattern of the first frequency hopping and the second frequency hopping. In step 1730, the ue is configured/indicated a time window length, where the time window length is part of a plurality of PUSCH repetitions transmitted in frequency hopping. In step 1740, for the first frequency hopping, the UE determines a first power for PUSCH repetition in a first time window and a second power for PUSCH repetition in a second time window. In step 1750, for the second frequency hopping, the UE determines a third power to perform PUSCH repetition in a third time window and a fourth power to perform PUSCH repetition in a fourth time window. In step 1760, the UE transmits PUSCH repetition within a time window in the first frequency hopping and the second frequency hopping at the determined respective powers.
In some embodiments, when the gNB (such as BS 102) configures/instructs the UE (such as UE 116) to repeatedly transmit PUSCH using frequency hopping, and configures/instructs the time window to the UE to apply the conditions that result in the same phase and same power to the repetition on the window, the gNB may configure/instruct the time window as the number of slots, or multiple repetitions, or multiple symbols. Here, a slot is a continuous slot or, in general, a slot available for PUSCH transmission. When the window is defined by a plurality of consecutive time slots, the time slots may include one or more repetitions and/or one or more portions of the repetition, or no repetition (no PUSCH transmission). When the window is defined by an available time slot, the time slot may include one or more PUSCH repetitions and/or one or more portions of the repetition.
The diagram 2000 shown in fig. 20 illustrates a time window indicated as 16 consecutive slots, and it is assumed that PUSCH repetition transmission for each slot includes six PUSCH repetitions per hopping interval, since four slots for PUSCH repetition are not available.
Although fig. 16 illustrates method 1600, fig. 17 illustrates method 1700, fig. 18 illustrates diagram 1800, diagram 1900 illustrates diagram 1900, and fig. 20 illustrates diagram 2000, various changes may be made to fig. 16-20. For example, while method 1600 and method 1700 are illustrated 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, these steps may be omitted or replaced by other steps. For example, the steps of method 1600 and method 1700 may be performed in a different order.
Embodiments of the present disclosure also describe determining the number of slots/repetition of a PUSH or PUCCH transmission power for a bundled DM-RS over a non-consecutive slot/repetition in time.
In some implementations, when a UE (such as UE 116) is configured to repeatedly transmit PUSCH, repetition may occur in non-contiguous time slots (such as due to unavailability of contiguous time slots). The gap between two consecutive repetitions may be one or a number of time slots. In order to meet the requirements of constant power and phase continuity for repetition within the window, the UE derives the power value for repetition within the window by taking into account the gap between repetitions within the window. For multiple repetitions in the first window, the UE skips application of TPC commands and does not update the closed loop power control adjustment state. However, regardless of whether PUSCH transmission occurs in a slot, the UE accumulates TPC commands and updates the corresponding closed loop power control adjustment state for each slot. When there is a time slot with no transmission, an update of the closed loop power control adjustment state may be made as if a "virtual" TPC command was received and the same as the last TPC command received in the previous time slot. When the transmission gap includes the number of slots, a single or multiple "virtual" TPC commands may be assumed. According to the newly updated closed loop power control adjustment state of the window, the UE determines the corresponding power for PUSCH transmission repetition when the window changes. Alternatively or additionally, the UE may determine the power for PUSCH transmission repetition by scaling the power value determined by the closed loop power control adjustment state when the window changes.
Embodiments of the present disclosure also describe inter-slot frequency hopping for uplink transmissions. This is described in examples and embodiments such as fig. 21-24.
Fig. 21 and 22 illustrate exemplary methods 2100 and 2200, respectively, for determining frequency resources for PUCCH repetition to be transmitted, according to an embodiment of the present disclosure. Fig. 23 illustrates an example diagram 2300 of a UE configured with PUCCH-DM-RS bundling and enabled and configured to perform frequency hopping of PUCCH transmissions, in accordance with an embodiment of the disclosure. Fig. 24 illustrates an example plot 2400 of a last time slot in a first frequency wish and a first time slot in a second frequency wish in accordance with an embodiment of the disclosure. The steps of method 2100 of fig. 21 and method 2200 of fig. 22 may be performed by any one of UEs 111-119 of fig. 1 (such as UE 116 of fig. 3). Method 2100 and method 2200, and graphs 2300 and 2400 are for illustration only, and other embodiments may be used without departing from the scope of the disclosure.
In some embodiments, when a UE (such as UE 116) is configured with DM-RS bundling and configured with frequency hopping, it is desirable to adapt the time domain window for DM-RS bundling to the frequency hopping configuration to enhance the reception reliability of PUSCH or PUCCH, improve the tradeoff between DM-RS bundling and frequency hopping, and enhance the scheduling flexibility of frequency resources. It is also necessary to adapt the frequency hopping for PUSCH or PUCCH transmissions with repetition.
Note that for simplicity, with respect to PUCCH transmissions with repetition, similar principles may be applied to: (i) have repeated PUSCH transmissions, (ii) TB transmissions over a number of slots, (iii) have TB transmissions over a number of slots with TB repetition, or (iv) different TB transmissions over a number of slots.
In some embodiments, a UE configured with frequency hopping (such as UE 116) may or may not be configured with a frequency hopping interval. If the frequency hopping interval is not configured, the value of the frequency hopping interval may depend on the configuration of DMRS bundling or on the configuration or indication of the number of repetitions. When the UE is configured with a frequency hopping interval, the same configuration may be applicable to operation in UL BWP.
In some embodiments, when a UE (such as UE 116) is indicated to be in the presence ofTransmitting PUCCH on a slot andwhen configured by the inter-slot frequency hopping to perform frequency hopping for PUCCH transmission in different slots, and the value of the frequency hopping Interval is configured by PUCCH-frequency hopping-Interval +.>UE is->Repeat PUCCH transmission on each slot and every +.>Frequency hopping is performed. The UE may be provided with UE +>The UE uses it to transmit in any PUCCH format and/or in any PUCCH resource. The PUCCH-frequency multiplexing-Interval configuration may also provide +/per PUCCH format or per PUCCH resource >And a parameter value.
In some embodiments, when a UE (such as UE 116) is configured to perform frequency hopping of PUCCH transmissions and is also configured to perform DM-RS bundling for a length L of the time domain window of DM-RS bundling, the time interval for the UE to perform DM-RS bundling may depend on the configuration of DM-RS bundling and/or the configuration and/or default values for the frequency hopping pattern or interval. For example, the gNB may configure the frequency hopping interval or the number of frequency hops, or both. A default frequency hopping interval or default frequency hopping number may be defined for the UE for use when no configuration is set. The default value of the frequency hopping interval or hop count may be fixed or may be calculated based on other higher layer parameter values and/or based on an indication of the DCI format and/or based on the UE capability information. In one example, the UE is provided with a frequency hopping interval configuration, and when the UE receives an indication to transmit with frequency hopping, the UE transmits with the configured frequency hopping interval. In another example, the UE is not provided with a frequency hopping interval configuration, and when the UE receives an indication to transmit with frequency hopping, the UE transmits with a default frequency hopping interval.
In some embodiments, when a UE, such as UE 116, is configured to perform frequency hopping for PUCCH transmissions and is provided with a frequency hopping interval N, and is configured with DM-RS bundling and is not provided with a Time Domain Window (TDW) length, the nominal or configured TDW length is assumed to be the same as the frequency hopping interval. The UE performs DM-RS bundling on a slot of a first frequency hopping, and when the frequency hopping changes, the TDW changes, and the UE restarts DM-RS bundling on a second TDW whose length is equal to a second frequency hopping interval. The UE may configure or indicate the mode over the number of slots or symbols, and the hopping duration in the mode may be the same or different.
In some embodiments, when a UE (such as UE 116) is configured to perform frequency hopping of PUCCH transmissions and is provided with a frequency hopping interval N, and is configured as DM-RS bundling and the TDW length L is set by a higher layer, the length of the TDW for which the UE maintains phase and power continuity while transmitting PUCCH repetitions may depend on one or both of the value L of the configured TDW length and the value N of the configured frequency hopping interval, where the value L and the value N are provided as the number of slots or symbols.
For a frequency hopping interval N, where N indicates the number of consecutive slots, if L is less than N, the PUCCH repetition within that time interval L is part of the first TDW, and the remaining repetition within the same frequency hop may be part of one or more TDWs of length L or less, where the length of the last TDW within that frequency hop may be less than L. Similarly, for a frequency hopping interval N, where N indicates the number of consecutive slots, if L is greater than or equal to N, the PUCCH repetition within this time interval N is part of the first TDW, and the remaining repetition may be part of one or more TDWs of length N or less, where the length of the last TDW may be less than N.
In some embodiments, when a UE (such as UE 116) is configured to hop PUCCH transmissions and is not provided with a hopping interval N by a higher layer, and is configured with DM-RS bundling and is provided with a TDW length L by a higher layer, the value of the hopping interval is assumed to be equal to the configured value L.
In some embodiments, when a UE (such as UE 116) is configured to hop PUCCH transmissions and is not provided with a hopping interval N by the higher layer and is configured with DM-RS bundling and is not provided by the higher layer TDW length L, the value of the hopping interval may be a default value of the hopping interval or a default value of the TDW length, or the number of slots from which the PUCCH is indicated to be transmitted from the UEIs derived from the above.
The value ranges of the parameters N and L configured may be the same or different. The frequency hopping interval N may be assumed to be from a first set of valuesAnd the configured TDW length L can be assumed to be from the second value set +.>Is a value of (2). Note that N MAX And L MAX N MAX The values from the first set may or may not be part of the second set, and vice versa, may or may not be part of the first set. In a first example, the first set of values for the frequency hopping interval is {1,2,4} and the second set of values for the TDW length is {2,4,8}. In a second example, the first set of values for the frequency hopping interval is {1,2,4,8,16} and the second set of values for the TDW length is {2,4,8,16,32}. In a third example, the first set of values for the frequency hopping interval is {1,2,4,8,16} and the second set of values for the TDW length is {2,4,8,16,20,32,48}. The set of values for the configuration of the TDW length may be the same as the set of values of the number of repetitions or further comprise one or more values that are larger than the maximum number of repetitions. A TDW length greater than the maximum number of repetitions may be when some of the time slots are not available for transmission And (3) using. For example, if the number of PUSCH repetitions is 16 and there are no 16 consecutive available slots, the TDW length may be equal to 20 slots, with 4 of the 20 slots not available for PUSCH transmission, and DMRS bundling may be used for 16 non-consecutive slots. It is also possible that the granularity of the values for the TDW length is different from the granularity of the number of repetitions. For example, the value set for the TDW length is a subset of the value of the repetition number.
Note that the description using the value set for the TDW length configuration is equally applicable when the repetition number set is used instead of the value set for the TDW length.
In some embodiments, when the frequency hopping interval is not configured and the TDW length is configured with a first value that is a maximum value in the second set that is not included in the first set, or a value in the second set that is greater than the maximum value of the first set, the frequency hopping interval may be half the first value if the value of the frequency hopping interval is included in the first set, or a next greater value in the second set that is half the first value of the second set, or a maximum value of the first set.
In some embodiments, when the frequency hopping interval is not configured and the TDW length is configured with a first value that is not included in the first set or is a half of the first value in the second set, the frequency hopping interval may be a next greater value in the first set or a value greater than half of the first value.
In one embodiment, when a UE (such as UE 116) is indicated to be in the presence ofTransmitting PUCCH on a slot andwhen, if the UE is configured to perform frequency hopping for PUCCH transmission repetition on a different slot and the UE is not provided with PUCCH-DMRS-bundling= 'enabled', the following example may occur. In one example, the UE is inRepetition of PUCCH transmissions on a slotTransmission is started every +.>The interval of successive time slots performs frequency hopping, wherein if set +.>Is the value of PUCCH-FrequencyHopping-Interval, otherwise, < ->In another example, the UE is +.>The PUCCH is transmitted on each interval. The first interval has the number 0 and until the UE is +.>Each subsequent interval in the individual slots where the PUCCH is transmitted is calculated regardless of whether the UE transmitted the PUCCH in the slot. In yet another example, the UE transmits the PUCCH starting from the PRB provided by startingPRB at even-numbered intervals and starting from the PRB provided by second hopprb at intervals of odd-numbered hopping intervals.
In another embodiment, when a UE (such as UE 116) is indicated to be inTransmitting PUCCH on a slot andwhen, if the UE is configured to perform frequency hopping for PUCCH transmission repetition on different slots and is provided with PUCCH-DMRS-bundling= 'enabled' and is not provided with PUCCH-TimeDomainWindowLength, the following example may occur. In one example, the UE is +. >Repetition of PUCCH transmission on a slot, starting at every +.>The interval of successive time slots performs frequency hopping, wherein if set +.>Is the value of PUCCH-FrequencyHopping-Interval, otherwise, < ->In another example, the UE is inThe PUCCH is transmitted on each interval. The first interval has the number 0 and up to +.>Each subsequent interval in the individual slots where the PUCCH is transmitted is calculated regardless of whether the UE transmitted the PUCCH in the slot. In yet another example, the UE transmits the PUCCH starting from the PRB provided by startingPRB at even-numbered intervals and starting from the PRB provided by second hopprb at intervals of odd-numbered hopping intervals.
In yet another embodiment, when the UE is indicated to be in the presence ofTransmit PUCCH on each slot and->When, if the UE is configured to perform frequency hopping for PUCCH transmission repetition on different slots, is provided with PUCCH-DMRS-bundling= 'enabled' and is provided with PUCCH-timedomainwindowlength= 'L', the following example may occur. In one example, the UE is +.>Repetition of PUCCH transmission on a slot, starting at every +.>The interval of successive time slots performs frequency hopping, wherein if set +. >Is the value of PUCCH-FrequencyHopping-Interval, otherwise, < ->In another example, the UE is +.>The PUCCH is transmitted on each interval. The first interval has the number 0 and up to +.>Each subsequent interval in the individual slots where the PUCCH is transmitted is calculated regardless of whether the UE transmitted the PUCCH in the slot. In yet another example, the UE transmits the PUCCH starting from the PRB provided by startingPRB at even-numbered intervals and starting from the PRB provided by second hopprb at intervals of odd-numbered hopping intervals.
Alternatively, toValue->Can be +.>Or alternativelyOr->Here, the value F may be a value that is configured by the network or indicated by the UE. The value F may be estimated based on UE measurements on the received signal or may be a fixed value.
In some embodiments, a UE (such as UE 116) may be provided with multiple hopping intervals when the UE is configured to perform hopping of PUCCH transmissions. For example, when the UE is provided with 2 hopping intervals N 0 And N 1 At the time, the UE performs frequency hopping every interval and at a frequency equal to the first frequency hopping interval N 0 The PUCCH is transmitted starting from the first PRB provided by startingPRB in the number of slots, andat equal to the second frequency hopping interval N 1 Starting to transmit PUCCH from the second PRB provided by the second hopprb in the number of slots. The first slot of the first frequency hopping interval is the slot indicated to the UE for the first PUCCH transmission and has the number 0, and is at Each subsequent slot in the individual slots in which the PUCCH is transmitted is calculated regardless of whether the UE transmits the PUCCH in the slot. The time slots in the frequency hopping interval are consecutive time slots and the last time slot of the frequency hopping interval and the first time slot of the subsequent frequency hopping interval are consecutive time slots. When the UE is configured with DM-RS bundling and is not provided with a TDW length, the TDW length is determined to be the same length as the frequency hopping interval and may change every frequency hopping. The UE may also be provided with more than two starting PRBs, e.g., the UE may also be provided with a spirahopprb, which is an index of the first PRB for PUCCH transmission in the third hop.
In some embodiments, when a UE (such as UE 116) is configured to perform frequency hopping of PUCCH transmissions and is not provided with a frequency hopping pattern or interval, and is configured with DM-RS bundling and is provided with a TDW length L by a higher layer, TDW is determined based on the configured value L, and the frequency hopping interval is determined to be equal to L. Thus, the UE performs frequency hopping at intervals of every L slots and starts from a first PRB provided by startingPRB in a slot of the frequency hopping interval and starts to transmit PUCCH from a second PRB provided by secondHopPRB in a slot of the frequency hopping interval. The first slot of the first frequency hopping interval is a slot indicated to the UE for the first PUCCH transmission and has number 0, and until the UE transmits in the slot Each subsequent slot of the individual PUCCHs is calculated regardless of whether the UE transmits the PUCCHs in the slots. The time slots in the frequency hopping interval are consecutive time slots and the last time slot of the frequency hopping interval and the first time slot of the subsequent frequency hopping interval are consecutive time slots.
A method 2100 illustrated in fig. 21 describes an exemplary process for a UE to determine frequency resources for transmitting PUCCH repetition in accordance with the present disclosure.
In step 2110, a UE (such as UE 116) is configured with frequency hopping and is not provided with a frequency hopping interval. In step 2120, the UE is configured with DM-RS bundling and is provided with a length L of the TDW. In step 2130, the UE is configured/indicated to transmit a UE withAnd repeated PUCCHs. In step 2140, the UE determines the TDW based on the provided length L and the length L hopping interval. In step 2150, the UE determines frequency resources for transmitting PUCCH repetition based on the hopping configuration and L.
In some embodiments, when a UE (such as UE 116) is configured to perform frequency hopping for PUCCH transmissions and is not provided with a frequency hopping interval, and is configured as DM-RS bundling and the length L of the TDW is not set by a higher layer, the TDW length may be determined by the maximum duration defined by PUCCH-TimeDomainWindowLength. The maximum duration is the UE capability indicating the maximum time interval that the UE can maintain power consistency and phase continuity on PUCCH transmissions of PUCCH repetition. It is possible that the number of repetition by PUCCH To determine the TDW length. It is also possible that the TDW length is determined as the minimum between the maximum duration and the number of repetitions. The frequency hopping interval may then be determined to be the same as the determined TDW length. The hopping interval and the TDW length may also have different values. For example, the frequency hopping interval may be the same as the number of repetitions and the TDW length may be the same as the maximum duration. This is beneficial under certain channel conditions and as the difference between the maximum duration and the number of repetitions increases.
Method 2200 shown in fig. 22 depicts an exemplary procedure in which a UE determines frequency resources for transmitting PUCCH repetition in accordance with the present disclosure.
In step 2210, a UE (such as UE 116) is configured with frequency hopping and is not provided with a frequency hopping interval. In step 2220, the UE is configured with DM-RS bundling and provided with the length L of the TDW. In step 2230, the UE is configured/indicated to transmit a UE withAnd repeated PUCCHs. In step 2240, the UE is based on +.>And a maximum duration to determine the length of the TDW. In step 2250, the UE determines a frequency hopping interval according to the determined TDW length. In step 2260, the UE determines frequency resources for transmitting PUCCH repetition based on the hopping configuration and the determined hopping interval.
Fig. 23 shows a diagram 2300 of a UE configured with enabled PUCCH-DM-RS-Bundling and configured to perform frequency hopping for 6 PUCCH repeated PUCCH transmissions at a frequency hopping interval of six slots. The first two slots are not available for PUCCH transmission. In case 2310, the TDW is determined by the index of consecutive slots in the first hopping interval and the first TDW length is the same as the first hopping interval. In case 2320, the TDW is determined by the index of the available slots, and since the first two slots are not available for PUCCH transmission, the first TDW starts from slot 3 and has a length equal to 4 slots. In both case 2310 and case 2320, the UE maintains power consistency and phase continuity on PUCCH repetition transmitted in slot 3 through slot 6. The UE applies DM-RS bundling in the second TDW and maintains power consistency and phase continuity on PUCCH repetition transmitted in slot 7 to slot 12.
Determining the first TDW as in case 2310 or in case 2320 may depend on whether the TDW length is determined by PUCCH-TimeDomainWindowLength (if present). Here, PUCCH-TimeDomainWindowLength is used to determine the number of slots for PUCCH transmission, or the value of the hopping interval, or the number of PUCCH repetitions Or the duration of each nominal TDW is defined by a UE capability that includes a maximum number of slots, including a maximum number of slots that the UE can maintain power consistency and phase continuity in PUCCH transmissions.
It is also possible that in case 2320 whether TDW1 is a nominal TDW or an actual TDW depends on the unavailable slots for PUCCH transmission. For operation in unpaired spectrum, when a UE is scheduled to transmit PUCCH repetition over the number of slots and some of the slots become unavailable (e.g., UL erasure indication, DL reception, SFI reception, etc. due to overlapping with other UL transmissions of higher priority), whether the TDW is a nominal TDW or an actual TDW depends on the type of mechanism that results in the scheduling time and frequency resources of the dynamic indication or semi-static configuration being unavailable. For example, resource unavailability is caused by dynamic signaling (such as an indication in a DCI format) or by overlapping with DL symbols indicated by RRC configuration (such as tdd-UL-DL-configuration command or tdd-UL-DL-configuration defined (if provided), or ssb-disposition infurst), determining whether TDW is nominal TDW or actual TDW.
For an actual TDW for PUCCH transmission, e.g., TDW1 for case 2320, the start of actual TDW1 is the first symbol of the first PUCCH transmission in a slot determined for PUCCH transmission within the nominal TDW spanning the 6 slot hopping interval, and if the actual TDW reaches the end of the last PUCCH transmission within the nominal TDW, the end of actual TDW1 is the last symbol of the last PUCCH transmission in a slot determined for PUCCH transmission within the nominal TDW. If the actual TDW reaches the end of the last PUCCH transmission within the nominal TDW.
Fig. 24 shows a plot 2400 of the last slot of the first frequency hop and the first slot of the second frequency hop. There are two PUCCH repetitions of four symbols transmitted back-to-back in each slot. The first actual TDW ends before the frequency hopping boundary and the second TDW starts after the frequency hopping boundary. If the second TDW is a nominal TDW, the second nominal TDW starts with a first symbol in a slot after a frequency hopping boundary including a first PUCCH transmission after the frequency hopping boundary. If the second TDW is a nominal TDW, the start of the second actual TDW is the first symbol of the first PUCCH transmission after the frequency hopping boundary.
When a UE (such as UE 116) is configured to frequency hop PUCCH transmissions, the frequency hopping interval may be provided per UL BWP in a PUCCH configuration PUCCH-Config or per PUCCH Resource in a PUCCH Resource configuration PUCCH-Resource. It is possible to provide one or more time-frequency intervals, wherein one value is used for all hops, or one of the provided values is used for multi-hops. It is also possible that the hopping interval is used a first number of times on a first hopping frequency and then a second number of times on a second hopping frequency.
For example, when the UE is configured to perform frequency hopping for PUCCH transmission and does not provide a frequency hopping interval, the frequency hopping interval may be set by DCI. Here, the DCI format may be scheduling DCI or activating DCI or DCI including a field indicating one or more hopping interval values, which schedules PUCCH transmission. It is also possible that the indication of one or more frequency hopping intervals is made by a MAC Control Element (CE).
The gNB (such as BS 102) may configure the UE with the value of one or more frequency hopping intervals and use physical layer signaling to dynamically indicate the number of frequency hopping intervals or change the value of frequency hopping intervals. For example, the gNB may indicate UE behavior through a 1-bit field in the DCI format scheduling PUCCH. 1-bit field signaling may be used to indicate whether the frequency hopping interval is changed. For example, a value of "0" indicates no change, and a value of "1" indicates that a configured hop interval value may be used. It is also possible that the 1-bit DCI field indicates whether the first or second frequency hopping interval is used. The gNB may also configure a plurality of values for the number of frequency hopping intervals and use a field in the DCI to indicate which value to use. For example, the gNB may be configured by the higher layer 4 with a value for a hopping interval that the UE may use to transmit symbols for PUCCH transmission repetition, and indicate which value to use with a 2-bit field of the DCI format.
In some embodiments, when a UE (such as UE 116) is configured to perform frequency hopping for PUCCH transmissions and provide a frequency hopping interval and starting PRBs for each frequency hopped PUCCH transmission, the UE may also be provided with an offset from the starting PRBs. Here, the resource offset may be the same or different for each starting PRB of different hopping frequencies. For example, for PUCCH transmission on two hops, the UE is provided with startingprbs and secondhopprbs, and may also be provided with a parameter OffsetPRB indicating the resource offset applied to startingprbs and secondhopprbs. It is also possible that the UE is provided with a plurality of offset values applied to the startingPRB index and the secondHopPRB index. It is possible that the UE is provided with more than two indexes. For example, the UE may be provided with 4 or 8 resources to start PUCCH transmission in the corresponding 4 or 8 hops. The first PRB of the hopping may be indicated as an index of another PRB with respect to another hopping (e.g., an index of the first PRB with respect to the first hopping or an index of the first PRB with respect to the subsequent hopping), or may be indicated as an absolute index identifying time and frequency resources for PUCCH transmission. The first PRB of each hop may be indicated independently of the first PRB of any other hop. Additionally or alternatively, the UE may be provided with a frequency hopping interval corresponding to frequency hopping. The one or more resource offsets may be indicated by a DCI format or MAC-CE or may be configured by RRC parameters. The one or more resource offsets may be UE-specific, or may be cell-specific, or may be configured per UL BWP.
It is also possible that the resource offset for frequency hopping is associated with DM-RS bundled enabled transmissions and can be applied to PUCCH transmissions within the DM-RS bundled TDW. Thus, the UE performs frequency hopping at intervals of every L slots, and starts from a first PRB provided by startingPRB and offsetPRB in slots of the frequency hopping interval and starts to transmit PUCCH from a second PRB provided by secondHopPRB and offsetPRB in slots of the frequency hopping interval. The first slot of the first frequency hopping interval is a slot indicated to the UE for the first PUCCH transmission and has number 0 and is until the UE in the slot transmitsEach subsequent slot of the individual PUCCHs is calculated regardless of whether the UE transmits the PUCCHs in the slots. The time slots in the frequency hopping interval are consecutive time slots and the last time slot of the frequency hopping interval and the first time slot of the subsequent frequency hopping interval are consecutive time slots.
In some embodiments, a UE (such as UE 116) is configured for frequency hopping of PUSCH repetition type a. The UE may configure frequency hopping for PUSCH repetition type a by higher layer parameters frequencyhopingdci-0-2 in PUSCH-Config for PUSCH transmission scheduled by DCI format 0_2, or frequencyHopping provided in PUSCH-Config for PUSCH transmission scheduled by DCI formats other than 0_2, or frequencyHopping provided in configurable grant Config for configured PUSCH transmission. The UE may configure frequency hopping for PUSCH repetition type B by higher layer parameters frequencyhopingdci-0-2 in PUSCH-Config for PUSCH transmission scheduled by DCI format 0_2, or by frequencyhopingdci-0-1 provided in PUSCH-Config for PUSCH transmission scheduled by DCI format 0_1, or by frequencyhopingpusch-RepTypeB provided in rrc-configurable uplink grant for type 1 configured PUSCH transmission uplink grant. The UE may also be provided with parameters for frequency hopping configuration, which are used when the UE is also configured with DMRS bundling operations.
Although fig. 21 illustrates method 2100, fig. 22 illustrates method 2200, fig. 23 illustrates diagram 2300, and fig. 24 illustrates diagram 2400, various changes may be made to fig. 21-24. For example, although method 2100 and method 2200 are illustrated as a series of steps, the steps may overlap, occur in parallel, occur in a different order, or occur multiple times. In another example, these steps may be omitted or replaced by other steps. For example, the steps of method 2100 and method 2200 may be performed in a different order.
Fig. 25 illustrates a structure of a UE according to an embodiment of the present disclosure.
Referring to fig. 25, the ue 2500 may include a controller 2510, a transceiver 2520, and a memory 2530. However, all of the components shown are not required. The UE 2500 may be implemented with more or fewer components than are shown in fig. 25. Further, according to another embodiment, the controller 2510, the transceiver 2520 and the memory 2530 may be implemented as a single chip.
The UE 2500 may correspond to the terminal described above. For example, UE 2500 corresponds to the terminal in fig. 3.
The above-described components will now be described in detail.
The controller 2510 can include one or more processors or other processing devices that control the proposed functions, processes and/or methods. The operation of the UE 2500 may be implemented by the controller 2510.
Transceiver 2520 may include an RF transmitter for up-converting and amplifying the transmit signal, and an RF receiver for down-converting the receive signal. However, according to another embodiment, transceiver 2520 may be implemented with more or fewer components than shown in the components.
The transceiver 2520 may be connected to the controller 2510 and transmit and/or receive signals. The signals may include control information and data. In addition, the transceiver 2520 may receive signals over a wireless channel and output signals to the controller 2510. The transceiver 2520 may transmit signals output from the controller 2510 through a wireless channel.
The memory 2530 may store control information or data included in signals obtained by the UE 2500. The memory 2530 may be connected to the controller 2520 and store at least one instruction or protocol or parameter for the proposed functions, procedures and/or methods. Memory 2530 may include Read Only Memory (ROM), and/or Random Access Memory (RAM), and/or a hard disk, and/or a CD-ROM, and/or a DVD, and/or other storage devices.
Fig. 26 illustrates a structure of a Base Station (BS) according to an embodiment of the present disclosure.
Referring to fig. 26, the bs2600 may include a controller 2610, a transceiver 2620, and a memory 2630. However, all of the components shown are not required. BS2600 may be implemented by more or fewer components than shown in fig. 26. Further, according to another embodiment, the controller 2610, the transceiver 2620 and the memory 2630 may be implemented as a single chip.
BS2600 may correspond to a gNB as described in this disclosure. For example, BS2600 may correspond to the gNB in fig. 2.
The above-described components will now be described in detail.
The controller 2610 may include one or more processors or other processing devices that control the proposed functions, processes, and/or methods. Operation of BS2600 may be achieved by controller 2610.
Transceiver 2620 may include an RF transmitter for up-converting and amplifying a transmit signal, and an RF receiver for down-converting a receive signal. However, according to another embodiment, transceiver 2620 may be implemented by more or fewer components than shown in the components.
The transceiver 2620 may be connected to the controller 2610 and transmit and/or receive signals. The signals may include control information and data. In addition, the transceiver 2620 may receive signals through a wireless channel and output the signals to the controller 2610. The transceiver 2620 may transmit a signal output from the controller 2610 through a wireless channel.
Memory 2630 may store control information or data included in signals obtained by BS 2600. The memory 2630 may be connected to the controller 2610 and store at least one instruction or protocol or parameter for the proposed functions, procedures and/or methods. Memory 2630 may include read-only memory (ROM), and/or Random Access Memory (RAM), and/or a hard disk, and/or a CD-ROM, and/or a DVD, and/or other storage devices.
The above-described flow diagrams illustrate exemplary methods that may be implemented according to the principles of the present disclosure, and various modifications may be made to the methods illustrated in the flow diagrams described herein. For example, when shown as a series of steps, the steps in each figure may overlap, occur in parallel, occur in a different order, or occur multiple times. In another example, these steps may be omitted or replaced by other steps.
Although the figures show 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 do not limit the scope of the disclosure to any particular configuration. Furthermore, 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.
While the present disclosure has been described with exemplary embodiments, various changes and modifications may be suggested to one skilled in the art. The 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 the patented subject matter is defined by the claims.
Claims (15)
1. A user equipment, UE, in a communication system, the UE comprising:
a transceiver; and
a processor operably coupled to the transceiver and configured to:
receiving first information indicating that channels are transmitted on different time slots using the same power, and second information indicating a first number of time slots for transmitting the channels,
determining a first time window for transmitting the channel based on the first information and the second information, and determining a first power for transmitting the channel over the first time window, and
and transmitting the channel on the first time window by using the first power.
2. The UE of claim 1, wherein the processor is configured to:
third information indicating a second number of time slots is received,
determining the number of time windows based on the second information and the third information, and
the channel is transmitted over the time window,
wherein the first time window comprises:
when the first number of time slots is not greater than the second number of time slots, the first time window includes the first number of time slots, and
when said first number of time slots is greater than said second number of time slots, said first time window comprises said second number of time slots,
Wherein a time window subsequent to said first time window comprises a number of time slots not greater than said second number of time slots,
wherein, in case the first time window comprises the second number of time slots, transmitting the channel over a third number of time slots over the first time window is skipped,
wherein the channel is transmitted over a second time window with a second power and over a third time window with a third power, an
Wherein the second time window comprises a time slot preceding a first time slot of the third number of time slots and the third time window comprises a time slot following a last time slot of the third number of time slots.
3. The UE of claim 1, wherein the processor is configured to:
receiving third information indicating a second number of time slots and fourth information indicating a third number of time slots, the time slots corresponding to frequency hopping FH intervals,
determining a number of time windows based on the second information, the third information, and the fourth information, and
the channels are transmitted in a frequency hopping manner over the time window every FH interval,
wherein when the third number of time slots is not greater than a minimum number between the first number of time slots and the second number of time slots, the first time window includes the third number of time slots, and a time window subsequent to the first time window includes a number of time slots not greater than the third number of time slots, and
Wherein the first time window comprises a number of time slots equal to the minimum number between the first number of time slots and the second number of time slots when the third number of time slots is greater than the minimum number between the first number of time slots and the second number of time slots.
4. The UE of claim 1, wherein the processor is configured to:
third information indicating a second number of time slots corresponding to the frequency hopping FH interval is received,
determining the number of time windows based on the second information and the third information, and
the channels are transmitted in a frequency hopping manner over the time window,
wherein when said second number of time slots is not greater than said first number of time slots, said first time window comprises a number of time slots equal to said second number of time slots, and a time window subsequent to said first time window comprises a number of time slots not greater than said second number of time slots,
wherein when said second number of time slots is greater than said first number of time slots, said first time window comprises a number of time slots equal to said first number of time slots, and a time window subsequent to said first time window comprises a number of time slots not greater than said first number of time slots,
Wherein the processor is further configured to: determining a second time window, a first spatial setting, and a second spatial setting, and
wherein the channel is transmitted over the first time window using the first spatial arrangement and over the second time window using the second spatial arrangement.
5. A base station, BS, in a communication system, the BS comprising:
a transceiver; and
a processor operably coupled to the transceiver and configured to:
transmitting first information indicating that channels are received on different time slots using the same power, and second information indicating a first number of time slots for receiving the channels;
determining a first time window for receiving the channel based on the first information and the second information, and determining a first power for receiving the channel over the first time window, and
the channel is received over the first time window with the first power.
6. The BS of claim 5, wherein the processor is configured to:
transmitting third information indicating a second number of slots;
determining the number of time windows based on the second information and the third information, and
The channel is transmitted over the time window,
wherein the first time window comprises:
when the first number of time slots is not greater than the second number of time slots, the first time window includes the first number of time slots, and
when said first number of time slots is greater than said second number of time slots, said first time window comprises said second number of time slots,
wherein a time window subsequent to said first time window comprises a number of time slots not greater than said second number of time slots,
wherein, in case the first time window comprises the second number of time slots, the receiving of the channel over a third number of time slots over the first time window is skipped,
wherein the channel is received over a second time window with a second power and over a third time window with a third power, and
wherein the second time window comprises a time slot preceding a first time slot of the third number of time slots and the third time window comprises a time slot following a last time slot of the third number of time slots.
7. The BS of claim 5, wherein the processor is configured to:
Transmitting third information indicating a second number of time slots and fourth information indicating a third number of time slots corresponding to a frequency hopping FH interval, and
determining a number of time windows based on the second information, the third information, and the fourth information, and
receiving the channel over the time window using frequency hopping per FH interval;
wherein when said third number of time slots is not greater than a minimum number between said first number of time slots and said second number of time slots, said first time window comprises said third number of time slots, and a time window subsequent to said first time window comprises a number of time slots not greater than said third number of time slots, and
wherein the first time window comprises a number of time slots equal to the minimum number between the first number of time slots and the second number of time slots when the third number of time slots is greater than the minimum number between the first number of time slots and the second number of time slots.
8. The BS of claim 5, wherein the processor is configured to:
third information indicating a second number of slots corresponding to the frequency hopping FH interval is transmitted,
Determining the number of time windows based on the second information and the third information, and
the channel is transmitted over the time window using frequency hopping,
wherein when said second number of time slots is not greater than said first number of time slots, said first time window comprises a number of time slots equal to said second number of time slots, and a time window subsequent to said first time window comprises a number of time slots not greater than said second number of time slots,
wherein when said second number of time slots is greater than said first number of time slots, said first time window comprises a number of time slots equal to said first number of time slots, and a time window subsequent to said first time window comprises a number of time slots not greater than said first number of time slots,
wherein the processor is further configured to: determining a second time window, a first spatial setting, and a second spatial setting, and
wherein the channel is received over the first time window using the first space and over the second time window using the second space.
9. A method performed by a user equipment, UE, in a communication system, the method comprising:
receiving first information indicating that channels are transmitted on different time slots using the same power, and second information indicating a first number of time slots for transmitting the channels,
Determining a first time window for transmitting the channel based on the first information and the second information, and determining a first power for transmitting the channel over the first time window, and
and transmitting the channel on the first time window by using the first power.
10. The method of claim 9, further comprising:
third information indicating a second number of time slots is received,
determining the number of time windows based on the second information and the third information, and
the channel is transmitted over the time window,
wherein the first time window comprises:
when the first number of time slots is not greater than the second number of time slots, the first time window includes the first number of time slots, and
when said first number of time slots is greater than said second number of time slots, said first time window comprises said second number of time slots,
wherein a time window subsequent to said first time window comprises a number of time slots not greater than said second number of time slots,
wherein, in case the first time window comprises the second number of time slots, transmitting the channel over a third number of time slots over the first time window is skipped,
Wherein the channel is transmitted over a second time window with a second power and over a third time window with a third power, an
Wherein the second time window comprises a time slot preceding a first time slot of the third number of time slots and the third time window comprises a time slot following a last time slot of the third number of time slots.
11. The method of claim 9, further comprising:
receiving third information indicating a second number of time slots and fourth information indicating a third number of time slots, the time slots corresponding to frequency hopping FH intervals,
determining a number of time windows based on the second information, the third information, and the fourth information, and
the channel is transmitted over the window using frequency hopping every FH interval,
wherein when said third number of time slots is not greater than a minimum number between said first number of time slots and said second number of time slots, said first time window comprises said third number of time slots, and a time window subsequent to said first time window comprises a number of time slots not greater than said third number of time slots, and
wherein the first time window comprises a number of time slots equal to the minimum number between the first number of time slots and the second number of time slots when the third number of time slots is greater than the minimum number between the first number of time slots and the second number of time slots.
12. The method of claim 9, further comprising:
third information indicating a second number of time slots corresponding to the frequency hopping FH interval is received,
determining the number of time windows based on the second information and the third information, and
the channel is transmitted over the time window using frequency hopping,
wherein when said second number of time slots is not greater than said first number of time slots, said first time window comprises a number of time slots equal to said second number of time slots, and a time window subsequent to said first time window comprises a number of time slots not greater than said second number of time slots,
wherein when said second number of time slots is greater than said first number of time slots, said first time window comprises a number of time slots equal to said first number of time slots, and a time window subsequent to said first time window comprises a number of time slots not greater than said first number of time slots,
wherein a second time window, a first spatial setting, and a second spatial setting are determined, an
Wherein the channel is transmitted over the first time window using the first spatial arrangement and over the second time window using the second spatial arrangement.
13. A method performed by a base station, BS, in a communication system, the method comprising:
transmitting first information indicating that channels are received on different time slots using the same power, and second information indicating a first number of time slots for receiving the channels;
determining a first time window for receiving the channel based on the first information and the second information, and determining a first power for receiving the channel over the first time window, and
the channel is received over the first time window with the first power.
14. The method of claim 13, further comprising:
transmitting third information indicating a second number of slots;
determining the number of time windows based on the second information and the third information, and
the channel is transmitted over the time window,
wherein the first time window comprises:
when the first number of time slots is not greater than the second number of time slots, the first time window includes the first number of time slots, and
when said first number of time slots is greater than said second number of time slots, said first time window comprises said second number of time slots,
wherein a time window subsequent to said first time window comprises a number of time slots not greater than said second number of time slots,
Wherein, in case the first time window comprises the second number of time slots, the receiving of the channel over a third number of time slots over the first time window is skipped,
wherein the channel is received over a second time window with a second power and over a third time window with a third power, and
wherein the second time window comprises a time slot preceding a first time slot of the third number of time slots and the third time window comprises a time slot following a last time slot of the third number of time slots.
15. The method of claim 13, further comprising:
third information indicating a second number of slots corresponding to the frequency hopping FH interval is transmitted,
determining the number of time windows based on the second information and the third information, and
the channel is transmitted over the time window using frequency hopping,
wherein when said second number of time slots is not greater than said first number of time slots, said first time window comprises a number of time slots equal to said second number of time slots, and a time window subsequent to said first time window comprises a number of time slots not greater than said second number of time slots,
Wherein when said second number of time slots is greater than said first number of time slots, said first time window comprises a number of time slots equal to said first number of time slots, and a time window subsequent to said first time window comprises a number of time slots not greater than said first number of time slots,
wherein the processor is further configured to: determining a second time window, a first spatial setting, and a second spatial setting, and
wherein the channel is received over the first time window using the first space and over the second time window using the second space.
Applications Claiming Priority (8)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US202163181066P | 2021-04-28 | 2021-04-28 | |
| US63/181,066 | 2021-04-28 | ||
| US63/254,394 | 2021-10-11 | ||
| US63/281,040 | 2021-11-18 | ||
| US63/301,871 | 2022-01-21 | ||
| US17/658,786 US20220353862A1 (en) | 2021-04-28 | 2022-04-11 | Transmission of uplink channels with frequency hopping |
| US17/658,786 | 2022-04-11 | ||
| PCT/KR2022/006069 WO2022231332A1 (en) | 2021-04-28 | 2022-04-28 | Transmission of uplink channels with frequency hopping |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117242882A true CN117242882A (en) | 2023-12-15 |
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| CN202280031086.7A Pending CN117242882A (en) | 2021-04-28 | 2022-04-28 | Transmitting uplink channels using frequency hopping |
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| CN (1) | CN117242882A (en) |
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