The invention relates to a method and equipment for signal transmission in a wireless communication system.
5G mobile communication technologies define broad frequency bands such that high transmission rates and new services are possible, and can be implemented not only in “Sub 6 GHz” bands such as 3.5 GHz, but also in “Above 6 GHz” bands referred to as mmWave including 28 GHz and 39 GHz. In addition, it has been considered to implement 6G mobile communication technologies (referred to as Beyond 5G systems) in terahertz bands (for example, 95 GHz to 3 THz bands) in order to accomplish transmission rates fifty times faster than 5G mobile communication technologies and ultra-low latencies one-tenth of 5G mobile communication technologies.
At the beginning of the development of 5G mobile communication technologies, in order to support services and to satisfy performance requirements in connection with enhanced Mobile BroadBand (eMBB), Ultra Reliable Low Latency Communications (URLLC), and massive Machine-Type Communications (mMTC), there has been ongoing standardization regarding beamforming and massive MIMO for mitigating radio-wave path loss and increasing radio-wave transmission distances in mmWave, supporting numerologies (for example, operating multiple subcarrier spacings) for efficiently utilizing mmWave resources and dynamic operation of slot formats, initial access technologies for supporting multi-beam transmission and broadbands, definition and operation of BWP (BandWidth Part), new channel coding methods such as a LDPC (Low Density Parity Check) code for large amount of data transmission and a polar code for highly reliable transmission of control information, L2 pre-processing, and network slicing for providing a dedicated network specialized to a specific service.
Currently, there are ongoing discussions regarding improvement and performance enhancement of initial 5G mobile communication technologies in view of services to be supported by 5G mobile communication technologies, and there has been physical layer standardization regarding technologies such as V2X (Vehicle-to-everything) for aiding driving determination by autonomous vehicles based on information regarding positions and states of vehicles transmitted by the vehicles and for enhancing user convenience, NR-U (New Radio Unlicensed) aimed at system operations conforming to various regulation-related requirements in unlicensed bands, NR UE Power Saving, Non-Terrestrial Network (NTN) which is UE-satellite direct communication for providing coverage in an area in which communication with terrestrial networks is un-available, and positioning.
Moreover, there has been ongoing standardization in air interface architecture/protocol regarding technologies such as Industrial Internet of Things (IIoT) for supporting new services through interworking and convergence with other industries, IAB (Integrated Access and Backhaul) for providing a node for network service area expansion by supporting a wireless backhaul link and an access link in an integrated manner, mobility enhancement including conditional handover and DAPS (Dual Active Protocol Stack) handover, and two-step random access for simplifying random access procedures (2-step RACH for NR). There also has been ongoing standardization in system architecture/service regarding a 5G baseline architecture (for example, service based architecture or service based interface) for combining Network Functions Virtualization (NFV) and Software-Defined Networking (SDN) technologies, and Mobile Edge Computing (MEC) for receiving services based on UE positions.
As 5G mobile communication systems are commercialized, connected devices that have been exponentially increasing will be connected to communication networks, and it is accordingly expected that enhanced functions and performances of 5G mobile communication systems and integrated operations of connected devices will be necessary. To this end, new research is scheduled in connection with eXtended Reality (XR) for efficiently supporting AR (Augmented Reality), VR (Virtual Reality), MR (Mixed Reality) and the like, 5G performance improvement and complexity reduction by utilizing Artificial Intelligence (AI) and Machine Learning (ML), AI service support, metaverse service support, and drone communication.
Furthermore, such development of 5G mobile communication systems will serve as a basis for developing not only new waveforms for providing coverage in terahertz bands of 6G mobile communication technologies, multi-antenna transmission technologies such as Full Dimensional MIMO (FD-MIMO), array antennas and large-scale antennas, metamaterial-based lenses and antennas for improving coverage of terahertz band signals, high-dimensional space multiplexing technology using OAM (Orbital Angular Momentum), and RIS (Reconfigurable Intelligent Surface), but also full-duplex technology for increasing frequency efficiency of 6G mobile communication technologies and improving system networks, AI-based communication technology for implementing system optimization by utilizing satellites and AI (Artificial Intelligence) from the design stage and internalizing end-to-end AI support functions, and next-generation distributed computing technology for implementing services at levels of complexity exceeding the limit of UE operation capability by utilizing ultra-high-performance communication and computing resources.
An aspect of the disclosure is to provide a method of providing a signal transmission between a terminal and a terminal in a telecommunication system.
In order to solve problems such as described above, certain embodiments according to this disclosure propose a method by a performed by a terminal in a wireless communication system, the method comprising: performing a first operation in case that a transport block over multi-slot physical uplink shared channel (TBoMS PUSCH) overlaps with a first uplink signal; and transmitting the TBoMS PUSCH signal or the first uplink signal.
Meanwhile, according to various embodiments of the disclosure, a method performed by a user equipment in a wireless communication system, comprising: performing a second operation under the condition that a transport block over multi-slot physical uplink shared channel TBoMS PUSCH transmission is supported; transmitting the TBoMS PUSCH, wherein the second operation includes a rate matching RM operation and/or a bit interleaving operation.
Meanwhile, according to various embodiments of the disclosure, a terminal in a wireless communication system, the terminal comprising: a transceiver; and at least one processor is configured to: perform a first operation in case that a transport block over multi-slot physical uplink shared channel (TBoMS PUSCH) overlaps with a first uplink signal, and control the transceiver to transmit the TBoMS PUSCH signal or the first uplink signal.
An embodiment of the disclosure may provide a method of providing an efficient signal transmission between a terminal and a base station in an wireless communication system.
Effects obtainable from the disclosure may not be limited to the above mentioned effects, and other effects which are not mentioned may be clearly understood, through the following descriptions, by those skilled in the art of the disclosure.
The following description with reference to the accompanying drawings is provided to assist in a comprehensive understanding of various embodiments of the disclosure as defined by the claims and their equivalents. It includes various specific details to assist in that understanding but these are to be regarded as merely exemplary. Accordingly, those of ordinary skill in the art will recognize that various changes and modifications of the various embodiments described herein can be made without departing from the scope and spirit of the disclosure. In addition, descriptions of well-known functions and constructions may be omitted for clarity and conciseness.
The terms and words used in the following description and claims are not limited to the bibliographical meanings, but, are merely used by the inventor to enable a clear and consistent understanding of the disclosure. Accordingly, it should be apparent to those skilled in the art that the following description of various embodiments of the disclosure is provided for illustration purpose only and not for the purpose of limiting the disclosure as defined by the appended claims and their equivalents.
It is to be understood that the singular forms “a,” “an,” and “the” include plural referents unless the context clearly dictates otherwise. Thus, for example, reference to “a component surface” includes reference to one or more of such surfaces.
For the same reason, in the accompanying drawings, some elements may be exaggerated, omitted, or schematically illustrated. Further, the size of each element does not completely reflect the actual size. In the drawings, identical or corresponding elements are provided with identical reference numerals.
The advantages and features of the disclosure and ways to achieve them will be apparent by making reference to embodiments as described below in detail in conjunction with the accompanying drawings. However, the disclosure is not limited to the embodiments set forth below, but may be implemented in various different forms. The following embodiments are provided only to completely disclose the disclosure and inform those skilled in the art of the scope of the disclosure, and the disclosure is defined only by the scope of the appended claims. Throughout the specification, the same or like reference numerals designate the same or like elements.
Here, it will be understood that each block of the flowchart illustrations, and combinations of blocks in the flowchart illustrations, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart block or blocks. These computer program instructions may also be stored in a computer usable or computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer usable or computer-readable memory produce an article of manufacture including instruction means that implement the function specified in the flowchart block or blocks. The computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operations to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions that execute on the computer or other programmable apparatus provide operations for implementing the functions specified in the flowchart block or blocks.
Further, each block of the flowchart illustrations may represent a module, segment, or portion of code, which includes one or more executable instructions for implementing the specified logical function(s). It should also be noted that in some alernative implementations, the functions noted in the blocks may occur out of the order. For example, two blocks shown in succession may in fact be executed substantially concurrently or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved.
As used herein, the “unit” refers to a software element or a hardware element, such as a Field Programmable Gate Array (FPGA) or an Application Specific Integrated Circuit (ASIC), which performs a predetermined function. However, the “unit” does not always have a meaning limited to software or hardware. The “unit” may be constructed either to be stored in an addressable storage medium or to execute one or more processors. Therefore, the “unit” includes, for example, software elements, object-oriented software elements, class elements or task elements, processes, functions, properties, procedures, sub-routines, segments of a program code, drivers, firmware, micro-codes, circuits, data, database, data structures, tables, arrays, and parameters. The elements and functions provided by the “unit” may be either combined into a smaller number of elements, or a “unit”, or divided into a larger number of elements, or a “unit”. Moreover, the elements and “units” or may be implemented to reproduce one or more central processing units (CPUs) within a device or a security multimedia card. Further, the “unit” in the embodiments may include one or more processors.
Hereinafter, the operation principle of the disclosure will be described in detail in conjunction with the accompanying drawings. In the following description of the disclosure, a detailed description of known functions or configurations incorporated herein will be omitted when it may make the subject matter of the disclosure rather unclear. The terms which will be described below are terms defined in consideration of the functions in the disclosure, and may be different according to users, intentions of the users, or customs. Therefore, the definitions of the terms should be made based on the contents throughout the specification.
In the following description, terms for identifying access nodes, terms referring to network entities, terms referring to messages, terms referring to interfaces between network entities, terms referring to various identification information, and the like are illustratively used for the sake of convenience. Therefore, the disclosure is not limited by the terms as used below, and other terms referring to subjects having equivalent technical meanings may be used.
In the following description, the disclosure will be described using terms and names defined in the 3rd generation partnership project long term evolution (3GPP LTE) standards, the latest existing communication standards, for the convenience of description. However, the disclosure is not limited by these terms and names, and may be applied in the same way to systems that conform other standards. In particular, the disclosure may be applied to the 3GPP new radio (NR: 5G mobile communication standards) system. In order to make the purpose, technical scheme and advantages of this application more clear, this application will be further explained in detail with reference to the attached drawings and embodiments.
The wireless network 100 includes a gNodeB (gNB) 101, a gNB 102, and a gNB 103. gNB 101 communicates with gNB 102 and gNB 103. gNB 101 also communicates with at least one Internet Protocol (IP) network 130, such as the Internet, a private IP network, or other data networks.
Depending on a type of the network, other well-known terms such as “base station” or “access point” can be used instead of “gNodeB” or “gNB”. For convenience, the terms “gNodeB” and “gNB” are used in this patent document to refer to network infrastructure components that provide wireless access for remote terminals. And, depending on the type of the network, other well-known terms such as “mobile station”, “user station”, “remote terminal”, “wireless terminal” or “user apparatus” can be used instead of “user equipment” or “UE”. For convenience, the terms “user equipment” and “UE” are used in this patent document to refer to remote wireless devices that wirelessly access the gNB, no matter whether the UE is a mobile device (such as a mobile phone or a smart phone) or a fixed device (such as a desktop computer or a vending machine).
gNB 102 provides wireless broadband access to the network 130 for a first plurality of User Equipments (UEs) within a coverage area 120 of gNB 102. The first plurality of UEs include a UE 111, which may be located in a Small Business (SB); a UE 112, which may be located in an enterprise (E); a UE 113, which may be located in a WiFi Hotspot (HS); a UE 114, which may be located in a first residence (R); a UE 115, which may be located in a second residence (R); a UE 116, which may be a mobile device (M), such as a cellular phone, a wireless laptop computer, a wireless PDA, etc. GNB 103 provides wireless broadband access to network 130 for a second plurality of UEs within a coverage area 125 of gNB 103. The second plurality of UEs include a UE 115 and a UE 116. In some embodiments, one or more of gNBs 101-103 can communicate with each other and with UEs 111-116 using 5G, Long Term Evolution (LTE), LTE-A, WiMAX or other advanced wireless communication technologies.
The dashed lines show approximate ranges of the coverage areas 120 and 125, and the ranges are shown as approximate circles merely for illustration and explanation purposes. It should be clearly understood that the coverage areas associated with the gNBs, such as the coverage areas 120 and 125, may have other shapes, including irregular shapes, depending on configurations of the gNBs and changes in the radio environment associated with natural obstacles and man-made obstacles.
As will be described in more detail below, one or more of gNB 101, gNB 102, and gNB 103 include a 2D antenna array as described in embodiments of the present disclosure. In some embodiments, one or more of gNB 101, gNB 102, and gNB 103 support codebook designs and structures for systems with 2D antenna arrays.
Although
The transmission path 200 includes a channel coding and modulation block 205, a Serial-to-Parallel (S-to-P) block 210, a size N Inverse Fast Fourier Transform (IFFT) block 215, a Parallel-to-Serial (P-to-S) block 220, a cyclic prefix addition block 225, and an up-converter (UC) 230. The reception path 250 includes a down-converter (DC) 255, a cyclic prefix removal block 260, a Serial-to-Parallel (S-to-P) block 265, a size N Fast Fourier Transform (FFT) block 270, a Parallel-to-Serial (P-to-S) block 275, and a channel decoding and demodulation block 280.
In the transmission path 200, the channel coding and modulation block 205 receives a set of information bits, applies coding (such as Low Density Parity Check (LDPC) coding), and modulates the input bits (such as using Quadrature Phase Shift Keying (QPSK) or Quadrature Amplitude Modulation (QAM)) to generate a sequence of frequency-domain modulated symbols. The Serial-to-Parallel (S-to-P) block 210 converts (such as demultiplexes) serial modulated symbols into parallel data to generate N parallel symbol streams, where N is a size of the IFFT/FFT used in gNB 102 and UE 116. The size N IFFT block 215 performs IFFT operations on the N parallel symbol streams to generate a time-domain output signal. The Parallel-to-Serial block 220 converts (such as multiplexes) parallel time-domain output symbols from the Size N IFFT block 215 to generate a serial time-domain signal. The cyclic prefix addition block 225 inserts a cyclic prefix into the time-domain signal. The up-converter 230 modulates (such as up-converts) the output of the cyclic prefix addition block 225 to an RF frequency for transmission via a wireless channel. The signal can also be filtered at a baseband before switching to the RF frequency.
The RF signal transmitted from gNB 102 arrives at UE 116 after passing through the wireless channel, and operations in reverse to those at gNB 102 are performed at UE 116. The down-converter 255 down-converts the received signal to a baseband frequency, and the cyclic prefix removal block 260 removes the cyclic prefix to generate a serial time-domain baseband signal. The Serial-to-Parallel block 265 converts the time-domain baseband signal into a parallel time-domain signal. The Size N FFT block 270 performs an FFT algorithm to generate N parallel frequency-domain signals. The Parallel-to-Serial block 275 converts the parallel frequency-domain signal into a sequence of modulated data symbols. The channel decoding and demodulation block 280 demodulates and decodes the modulated symbols to recover the original input data stream.
Each of gNBs 101-103 may implement a transmission path 200 similar to that for transmitting to UEs 111-116 in the downlink, and may implement a reception path 250 similar to that for receiving from UEs 111-116 in the uplink. Similarly, each of UEs 111-116 may implement a transmission path 200 for transmitting to gNBs 101-103 in the uplink, and may implement a reception path 250 for receiving from gNBs 101-103 in the downlink.
Each of the components in
Furthermore, although described as using FFT and IFFT, this is only illustrative and should not be interpreted as limiting the scope of the present disclosure. Other types of transforms can be used, such as Discrete Fourier transform (DFT) and Inverse Discrete Fourier Transform (IDFT) functions. It should be understood that for DFT and IDFT functions, the value of variable N may be any integer (such as 1, 2, 3, 4, etc.), while for FFT and IFFT functions, the value of variable N may be any integer which is a power of 2 (such as 1, 2, 4, 8, 16, etc.).
Although
UE 116 includes an antenna 305, a radio frequency (RF) transceiver 310, a transmission (TX) processing circuit 315, a microphone 320, and a reception (RX) processing circuit 325. UE 116 also includes a speaker 330, a processor/controller 340, an input/output (I/O) interface 345, an input device(s) 350, a display 355, and a memory 360. The memory 360 includes an operating system (OS) 361 and one or more applications 362.
The RF transceiver 310 receives an incoming RF signal transmitted by a gNB of the wireless network 100 from the antenna 305. The RF transceiver 310 down-converts the incoming RF signal to generate an intermediate frequency (IF) or baseband signal. The IF or baseband signal is transmitted to the RX processing circuit 325, where the RX processing circuit 325 generates a processed baseband signal by filtering, decoding and/or digitizing the baseband or IF signal. The RX processing circuit 325 transmits the processed baseband signal to speaker 330 (such as for voice data) or to processor/controller 340 for further processing (such as for web browsing data).
The TX processing circuit 315 receives analog or digital voice data from microphone 320 or other outgoing baseband data (such as network data, email or interactive video game data) from processor/controller 340. The TX processing circuit 315 encodes, multiplexes, and/or digitizes the outgoing baseband data to generate a processed baseband or IF signal. The RF transceiver 310 receives the outgoing processed baseband or IF signal from the TX processing circuit 315 and up-converts the baseband or IF signal into an RF signal transmitted via the antenna 305.
The processor/controller 340 can include one or more processors or other processing devices and execute an OS 361 stored in the memory 360 in order to control the overall operation of UE 116. For example, the processor/controller 340 can control the reception of forward channel signals and the transmission of backward channel signals through the RF transceiver 310, the RX processing circuit 325 and the TX processing circuit 315 according to well-known principles. In some embodiments, the processor/controller 340 includes at least one microprocessor or microcontroller.
The processor/controller 340 is also capable of performing other processes and programs residing in the memory 360, such as operations for channel quality measurement and reporting for systems with 2D antenna arrays as described in embodiments of the present disclosure. The processor/controller 340 can move data into or out of the memory 360 as required by an execution process. In some embodiments, the processor/controller 340 is configured to execute the application 362 based on the OS 361 or in response to signals received from the gNB or the operator. The processor/controller 340 is also coupled to an I/O interface 345, where the I/O interface 345 provides UE 116 with the ability to connect to other devices such as laptop computers and handheld computers. I/O interface 345 is a communication path between these accessories and the processor/controller 340.
The processor/controller 340 is also coupled to the input device(s) 350 and the display 355. An operator of UE 116 can input data into UE 116 using the input device(s) 350. The display 355 may be a liquid crystal display or other display capable of presenting text and/or at least limited graphics (such as from a website). The memory 360 is coupled to the processor/controller 340. A part of the memory 360 can include a random access memory (RAM), while another part of the memory 360 can include a flash memory or other read-only memory (ROM).
Although
As shown in
RF transceivers 372a-372n receive an incoming RF signal from antennas 370a-370n, such as a signal transmitted by UEs or other gNBs. RF transceivers 372a-372n down-convert the incoming RF signal to generate an IF or baseband signal. The IF or baseband signal is transmitted to the RX processing circuit 376, where the RX processing circuit 376 generates a processed baseband signal by filtering, decoding and/or digitizing the baseband or IF signal. RX processing circuit 376 transmits the processed baseband signal to controller/processor 378 for further processing.
The TX processing circuit 374 receives analog or digital data (such as voice data, network data, email or interactive video game data) from the controller/processor 378. TX processing circuit 374 encodes, multiplexes and/or digitizes outgoing baseband data to generate a processed baseband or IF signal. RF transceivers 372a-372n receive the outgoing processed baseband or IF signal from TX processing circuit 374 and up-convert the baseband or IF signal into an RF signal transmitted via antennas 370a-370n.
The controller/processor 378 can include one or more processors or other processing devices that control the overall operation of gNB 102. For example, the controller/processor 378 can control the reception of forward channel signals and the transmission of backward channel signals through the RF transceivers 372a-372n, the RX processing circuit 376 and the TX processing circuit 374 according to well-known principles. The controller/processor 378 can also support additional functions, such as higher-level wireless communication functions. For example, the controller/processor 378 can perform a Blind Interference Sensing (BIS) process such as that performed through a BIS algorithm, and decode a received signal from which an interference signal is subtracted. A controller/processor 378 may support any of a variety of other functions in gNB 102. In some embodiments, the controller/processor 378 includes at least one microprocessor or microcontroller.
The controller/processor 378 is also capable of performing programs and other processes residing in the memory 380, such as a basic OS. The controller/processor 378 can also support channel quality measurement and reporting for systems with 2D antenna arrays as described in embodiments of the present disclosure. In some embodiments, the controller/processor 378 supports communication between entities such as web RTCs. The controller/processor 378 can move data into or out of the memory 380 as required by an execution process.
The controller/processor 378 is also coupled to the backhaul or network interface 382. The backhaul or network interface 382 allows gNB 102 to communicate with other devices or systems through a backhaul connection or through a network. The backhaul or network interface 382 can support communication over any suitable wired or wireless connection(s). For example, when gNB 102 is implemented as a part of a cellular communication system, such as a cellular communication system supporting 5G or new radio access technology or NR, LTE or LTE-A, the backhaul or network interface 382 can allow gNB 102 to communicate with other gNBs through wired or wireless backhaul connections. When gNB 102 is implemented as an access point, the backhaul or network interface 382 can allow gNB 102 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 backhaul or network interface 382 includes any suitable structure that supports communication through a wired or wireless connection, such as an Ethernet or an RF transceiver.
The memory 380 is coupled to the controller/processor 378. A part of the memory 380 can include an RAM, while another part of the memory 380 can include a flash memory or other ROMs. In certain embodiments, a plurality of instructions, such as the BIS algorithm, are stored in the memory. The plurality of instructions are configured to cause the controller/processor 378 to execute the BIS process and decode the received signal after subtracting at least one interference signal determined by the BIS algorithm.
As will be described in more detail below, the transmission and reception paths of gNB 102 (implemented using RF transceivers 372a-372n, TX processing circuit 374 and/or RX processing circuit 376) support aggregated communication with FDD cells and TDD cells.
Although
Exemplary embodiments of the present disclosure are further described below with reference to the accompanying drawings.
Those skilled in the art can understand that the singular forms “a”, “an”, and “the” used here can also include plural forms unless specifically stated. It should be further understood that the word “comprising” used in the specification of this application means the presence of said features, integers, steps, operations, elements and/or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and/or groups thereof. It should be understood that when an element is described as “connected” or “coupled” to another element, it may be directly connected or coupled to other elements, or there may be intervening elements. In addition, as used herein, the statements “connected” or “coupled” may include wireless connection or wireless coupling. As used herein, the phrase “and/or” includes all or any unit and all combinations of one or more associated listed items.
Those skilled in the art can understand that unless otherwise defined, all terms (including technical terms and scientific terms) used here have the same meaning as those commonly understood by ordinary technicians in the field to which this application belongs. It should also be understood that terms such as those defined in the general dictionary should be understood to have meanings consistent with those in the context of the prior art, and will not be interpreted with idealized or overly formal meanings unless specifically defined as here.
It can be understood by those skilled in the art that “terminal” and “terminal equipment” used here include not only the equipment including wireless signal receiver which is a wireless signal receiving equipment without capability of transmitting signals, but also the equipment including receiving and transmitting hardware which is capable of bidirectional communication on bidirectional communication link. Such devices may include: cellular or other communication devices with single-line display or multi-line display or cellular or other communication devices without multi-line display; PCs (Personal Communications Service), which can combine voice, data processing, fax and/or data communication capabilities; PDA(Personal Digital Assistant), which may include radio frequency receiver, pager, internet/intranet access, web browser, notepad, calendar and/or GPS(Global Positioning System) receiver; conventional laptops and/or palmtop computers or other devices having and/or including a radio frequency receiver. As used herein, “terminal” and “terminal equipment” can be portable, transportable, installed in the (aviation, maritime and/or land) transport, or suitable and/or configured to operate locally, and/or operate in any other place on the earth and/or space in a distributed manner. As used herein, “terminal” and “terminal equipment” can also be a communication terminal, an Internet terminal and a music/video playing terminal, such as PDA, MID (Mobile Internet Device) and/or a mobile phone with music/video playing functions, a smart TV, a set-top box and other devices.
The time domain unit (also called time unit) in this invention can be: an OFDM symbol, an OFDM symbol group (composed of multiple OFDM symbols), a time slot, a time slot group (composed of multiple time slots), a subframe, a subframe group (composed of multiple subframes), a system frame and a system frame group (composed of multiple system frames). And it can also be an absolute time unit, such as 1 millisecond, 1 second, etc. The time unit can also be a combination of various granularities, such as N1 time slots plus N2 OFDM symbols.
The frequency domain unit in this invention can be: a subcarrier, a subcarrier group (composed of multiple subcarriers), a resource block (RB), which can also be called a physical resource block (PRB), a resource block group (composed of multiple RBs), a band part (BWP), a band part group (composed of multiple BWPs), a band/carrier, a band group/carrier group. And it can also be an absolute frequency domain unit, such as 1 Hz, 1 kHz, etc. The frequency domain unit can also be a combination of various granularities, such as M1 PRBs plus M2 subcarriers.
And the text and drawings are provided as examples only to help readers understand the present disclosure. They are not intended and should not be interpreted as limiting the scope of the present disclosure in any way. Although some embodiments and examples have been provided, based on the disclosure herein, it is obvious to those skilled in the art that changes can be made to the illustrated embodiments and examples without departing from the scope of this disclosure.
Transmission in the wireless communication system includes: transmission from the base station (gNB) to the User Equipment (UE) (called downlink transmission) (and corresponding time slot is called downlink time slot), and transmission from UE to the base station (called uplink transmission) (and corresponding time slot is called uplink time slot).
In the downlink communication of wireless communication system, the system periodically transmits synchronization signals and broadcast channels to users through synchronization signal block (SSB), and the periodicity is called SSB periodicity or SSB burst periodicity. At the same time, the base station will configure a physical random access channel configuration period (PRACH configuration period), in which a certain number of random access transmission occasions (also called random access occasions, PRACH transmission occasion (RO)) are configured, and all SSBs in an association period (a certain length of time) can be mapped to the corresponding ROs. In a mapping cycle from SSB to RO, all SSBs in one SSB periodicity can be mapped to the required random access resources. There can be one or more mapping cycles in one association period. An association pattern period from SSB to RO contains one or more association periods, and the mapping pattern from SSB to RO in each association pattern period is the same.
In the New Radio (NR) communication system, before the establishment of radio resource control, such as in the random access procedure, the performance of random access directly affects the user experience. In traditional wireless communication systems, such as LTE and LTE-Advanced, the random access procedure is used in many scenarios, such as establishing initial link, cell handover, re-establishing uplink, RRC connection re-establishment, etc., and it is divided into Contention-based Random Access and Contention-free Random Access according to whether users monopolize preamble resources. In the Contention-based Random Access, each user chooses a preamble sequence from the same preamble sequence resources in the process of trying to establish uplink, and it is possible that multiple users choose the same preamble sequence to transmit to the base station. Therefore, the conflict resolution mechanism is an important research direction in random access, and how to reduce the probability of conflicts and how to quickly resolve the conflicts that have already occurred is the key index affecting the performance of random access.
The Contention-based Random Access in LTE-A is divided into four steps, as shown in
For the Contention-free Random Access, because the base station knows the user identification, the preamble sequence can be assigned to the user. Therefore, when transmitting the preamble sequence, the user does not need to randomly select the sequence, but will use the assigned preamble sequence. After detecting the assigned preamble sequence, the base station will transmit corresponding random access response, including timing advance information, uplink resource allocation and other information. After receiving the random access response, the user thinks that the uplink synchronization has been completed and waits for further scheduling by the base station. Therefore, the Contention-free Random Access includes two steps: step one is to transmit the preamble sequence; and step two is to transmit the random access response.
Random access procedure in LTE is suitable for the following scenarios:
In some network systems, such as 5G NR system, when beamforming is adopted and/or coverage is limited, a transport block (TB) can be transmitted by using resources in multiple time slots, which is denoted as TB over Multi-Slot (TBoMS), so as to obtain lower coding rate and higher coding gain, and the purpose of coverage improvement (performance improvement) can be achieved. However, when other uplink transmission signals conflict with the time unit occupied by the transmission data block, the power allocation may be re-allocated. How to optimize the power allocation to ensure the performance of using multiple time slots to transmit a single TB is a problem to be solved. At the same time, if the other uplink signals are uplink control channels, it is possible that UCI information carried on the control channel can be directly loaded on the TBoMS PUSCH for transmission, and how to ensure the performance of UCI and PUSCH in this situation is also a problem to be solved.
In the situation of supporting the transmission of TBoMS (Transport Block Over Multip-Slot) PUSCH, the PUSCH occupying multiple time slots may overlap with other uplink signals (such as PUCCH, PUSCH, SRS, PRACH, etc., which are referred to as the first uplink signal in the present invention). As shown in
According to one aspect of the present invention, the power adjustment method may include at least one of the following:
In addition, because the base station may use shared DMRS to demodulate and decode the data of the TBoMS PUSCH, that is, DMRS in multiple different time slots/transmissions can perform joint channel estimation. However, if the power of DMRS in a certain transmission changes, the base station needs to know this information to adjust the operation of sharing DMRS. Considering for the above situation, the embodiment also provides a way for the UE to feedback power reduction related information to the base station, specifically, there is at least one of the following ways:
In addition, there is a type of first uplink signal, i.e., PUCCH, in the scene where the first uplink signal overlaps with the TBoMS PUSCH. The UCI information carried on the PUCCH can be multiplexed and transmitted on the TBoMS PUSCH when PUCCH overlaps with the TBoMS PUSCH. Specifically, the multiplexing mode of PUCCH and the TBoMS PUSCH includes one or more of the following combined operation modes:
As shown in
Sequence Index 1: the first non-DMRS symbol after the first DMRS symbol in slot1,
Sequence Index 2: the first non-DMRS symbol after the second DMRS symbol in slot1,
Sequence Index 3: the first non-DMRS symbol after the first DMRS symbol in slot2,
Sequence Index 4: the first non-DMRS symbol after the second DMRS symbol in slot2,
Sequence Index 5: the first non-DMRS symbol before the first DMRS symbol in slot1,
Sequence Index 6: the first non-DMRS symbol before the second DMRS symbol in slot1,
Sequence Index 7: the first non-DMRS symbol before the first DMRS symbol in slot2,
Sequence Index 8: the first non-DMRS symbol before the second DMRS symbol in slot2.
In the case of supporting transmission of TBoMS (Transport Block over Multi-Slot) PUSCH, one TB can be transmitted on multiple time slots. In the process of preparing signals for transmission, at least one of the following operations needs to be handled:
In case of supporting transmission of TB OMS (Transport Block Over Multi-Slot) PUSCH, PUSCH occupying multiple slots may involve rate matching in a certain time unit (including bit selection and/or bit interleaving), wherein the certain time unit includes a single time slot (i.e., one time slot among a plurality of time slots used for one TBoMS PUSCH transmission); multiple time slots (i.e., partial time slots among the plurality of time slots for one TBoMS PUSCH transmission); or all time slots (i.e., all time slots among the plurality of time slots for one TBoMS PUSCH transmission). Different UE implementation methods may use different time units for rate matching processing, and UE and base station need to keep consistent understanding to receive and demodulate data signals correctly. In this embodiment, a single time slot and all time slots are taken as examples to describe the method, but the method can be extended to other time units, not limited to the above three examples. The method is performed,
In the case of supporting the transmission of TB OMS (Transport Block Over Multi-Slot) PUSCH, PUSCH occupying multiple slots may involve adjusting the transmission time, that is, applying the timing advance TA command (for example, it can be a 12bit timing advance indication; or a 6bit timing advance adjustment value). When the timing advance value TA1 is received at slot n, the UE needs to apply TA1 for uplink transmission after n+k+1 time slots, wherein the k=[Nslotsubframeμ·(NT,1+NT,2+NTA,max+0.5)/Tsf], which is the maximum possible value including the processing time of the UE and TA. When n+k+1 time slots fall into one of the multiple time slots (taking M=4 time slots as an example) of the transmission of one TBoMS (n+k+1 is the second time slot in the TBoMS), the UE may
The embodiment also provides a user equipment 1000 for transmitting uplink signals. The user equipment 1000 includes a transceiver 1001 and a controller 1002, wherein the transceiver 1001 is used for receiving signals from a base station and transmitting uplink signals to the base station. The controller 1002 is configured to receive signals from and transmit signals to the transceiver 1001. In addition, the controller 1002 is also configured to perform the first operation when the physical uplink shared channel of the transport block over the multiply slots (TBoMS PUSCH) overlaps with the first uplink signal, and transmit the TBoMS PUSCH signal and/or the first uplink signal, wherein the first operation includes adjusting the transmission power for signal transmission of the TBoMS PUSCH, increasing the priority of the TBoMS PUSCH, feeding back the information of power reduction to the base station and/or multiplexing uplink control information UCI carried by the first uplink signal on the TBoMS PUSCH for transmission.
The embodiment also provides an electronic device 1100 for signal transmission. The electronic device includes a memory 1101 and a controller 1102, and the memory 1101 stores computer-executable instructions. When the instructions are executed by the controller 1102, at least one method corresponding to the above embodiments of the disclosure is executed.
According to one aspect of the present invention, there is provided a method performed by a user equipment in a wireless communication system, comprising: performing a first operation when a transport block over multi-slot physical uplink shared channel TBoMS PUSCH overlaps with a first uplink signal; and transmitting the TBoMS PUSCH signal and/or the first uplink signal.
In another aspect of the present invention, there is provided a method performed by user equipment in a wireless communication system, wherein the first operation includes at least one of the following: adjusting the transmission power for signal transmission of the TBoMS PUSCH, increasing the priority of the TBoMS PUSCH, feeding back the information of power reduction to a base station, or multiplexing an uplink control information UCI carried by the first uplink signal on the TBoMS PUSCH.
In another aspect of the present invention, there is provided a method performed by user equipment in a wireless communication system, wherein the performing the first operation includes comparing the priorities of the TBoMS PUSCH and the first uplink signal, and performing the first operation according to the comparison result.
In another aspect of the present invention, there is provided a method performed by user equipment in a wireless communication system, wherein the adjusting the transmission power for signal transmission of the TBoMS PUSCH includes at least one of the following: reducing the transmission power of the overlapping part; reducing the transmission power in the time slot and/or transmission occasion where the overlapping part is located; reducing the transmission power in all time slots and/or transmission occasions; guaranteeing the required power of the first uplink signal; and guaranteeing the required power of the first uplink signal and guaranteeing the minimum required transmission power of the TBoMS PUSCH.
In another aspect of the present invention, there is provided a method executed by user equipment in a wireless communication system, wherein the guaranteeing the required power of the first uplink signal and guaranteeing the minimum required transmission power of the TBoMS PUSCH includes: if a maximum transmittable power of user equipment-the required transmission power of the first uplink signal (P_max−P_UL1) is not less than the minimum required transmission power of the TBoMS PUSCH (P_TBoMS_min), the maximum transmission power of TBoMS is equal to the maximum transmittable power of user equipment-the required power of the first uplink signal; and/or if the maximum transmittable power of the user equipment-the required power of the first uplink signal (P_max−P_UL1) is not less than the required power of TBoMS, the TBoMS does not need to reduce the power; and/or if the maximum transmittable power of user equipment-the required power of the first uplink signal (P_max−P_UL1) is less than the required power of TBoMS, the actual transmission power of the TBoMS PUSCH is the maximum transmittable power of user equipment-the required power of the first uplink signal; and/or if the maximum transmittable power of user equipment-the required power of the first uplink signal (P_max−P_UL1) is less than the minimum required transmission power of the TBoMS PUSCH (P_TBoMS_min), the transmission power of the TBoMS PUSCH is the minimum required transmission power of the TBoMS PUSCH, and the transmission power of the first uplink signal is the maximum transmittable power of user equipment-the minimum required transmission power of the TBoMS PUSCH (P_max−P_TBoMS_min).
In another aspect of the present invention, there is provided a method performed by user equipment in the wireless communication system, wherein the adjusting the transmission power for signal transmission of the TBoMS PUSCH includes: if the overlapping part includes DMRS symbols, performing one of the following methods: reducing power according to the power reduction values of other TBoMS PUSCH data symbols; without power reduction; or transferring the DMRS symbols overlapped.
In another aspect of the present invention, there is provided a method performed by user equipment in the wireless communication system, wherein the transferring the DMRS symbols overlapped includes transferring the DMRS symbols overlapped to OFDM symbols before the starting position of the symbols overlapped; or transferring the DMRS symbols overlapped to OFDM symbols after the ending position of the symbols overlapped.
In another aspect of the present invention, there is provided a method performed by user equipment in the wireless communication system, wherein the increasing the priority of the TBoMS PUSCH comprises: increasing the priority of the TBoMS PUSCH to a priority equal to the level of PUSCH or PUCCH transmitting CSI; increasing the priority of the TBoMS PUSCH to a priority equal to the level of PUSCH or PUCCH transmitting HARQ-ACK information; or determining the priority of the TBoMS PUSCH according to the configuration of the base station.
In another aspect of the present invention, there is provided a method performed by a user equipment in the wireless communication system, wherein feedback power reduction information to a base station includes: reporting feedback power reduction information on PUSCH transmission in the first time slot and/or transmission occasion after the TBoMS PUSCH with reduced power; or reporting feedback power reduction information on PUSCH transmission in the last time slot and/or transmission occasion in the TBoMS PUSCH.
In another aspect of the present invention, there is provided a method performed by a user equipment in the wireless communication system, wherein feeding back power reduction information to a base station includes: puncturing the resource element RE of PUSCH to transmit the feedback power reduction information; or transmitting the feedback power reduction information on a preset resource element RE.
In another aspect of the present invention, there is provided a method performed by a user equipment in the wireless communication system, wherein the feedback power reduction information includes at least one of the following: information related to the size of power reduction, information related to the size of time unit of power reduction, information related to the position of time unit of power reduction, and information related to whether or not power reduction operation has been performed.
In another aspect of the present invention, there is provided a method performed by a user equipment in the wireless communication system, wherein the multiplexing the uplink control information UCI carried by the first uplink signal on the TBoMS PUSCH comprises:
In another aspect of the present invention, there is provided a method performed by a user equipment in the wireless communication system, wherein determining the number of resource elements REs occupied by the uplink control information UCI comprises at least one of the following: determining the number of REs for multiplexing UCI transmission by using the number of PUSCH REs available on the time slot and/or the transmission occasion where the TBoMS PUSCH overlapping with the PUCCH is located; determining the number of REs for multiplexing UCI transmission by using the number of PUSCH REs available on the time slot and/or the transmission occasion where the TBoMS PUSCH overlapping with the PUCCH is located and the time slots and/or the transmission occasions before that; determining the number of REs for multiplexing UCI transmission by using the number of PUSCH REs available on the time slot and/or the transmission occasion where the TBoMS PUSCH overlapping with the PUCCH is located and the time slots and/or the transmission occasions after that; or determining the number of REs for multiplexing UCI transmission by using the number of PUSCH REs available on all time slots and/or the transmission occasions on the TBoMS PUSCH overlapping with the PUCCH.
In another aspect of the present invention, there is provided a method performed by a user equipment in the wireless communication system, wherein the number of PUSCH REs used in calculating the number of REs for multiplexing UCI transmission meets at least one of the following timing requirements: a time interval T1 between a first symbol of PUSCH for multiplexing UCI and a last symbol of PDSCH or DCI corresponding to PUCCH is not less than a first time threshold; a time interval T2 between the first symbol of PUSCH for multiplexing UCI and the last symbol of PUCCH is less than a second time threshold.
In another aspect of the present invention, there is provided a method performed by a user equipment in the wireless communication system, wherein if there are multiple first uplink signals overlapping with the TBoMS PUSCH, each first uplink signal is multiplexed separately, or the multiple first uplink signals in the same time slot and/or transmission occasion are combined and multiplexed on PUSCH.
In another aspect of the present invention, there is provided a method performed by a user equipment in the wireless communication system, wherein the determining the mapping mode of the uplink control information UCI comprises: if there are PUSCHs of multiple time slots and/or transmission occasions to multiplex UCI information, all UCI modulation symbols are mapped together; and/or the UCI modulation symbols are split and mapped in different time slots and/or transmission occasions.
In another aspect of the present invention, there is provided a method performed by a user equipment in the wireless communication system, wherein splitting the UCI modulation symbols comprises: splitting according to the number of time slots and/or transmission occasions; splitting according to the number of OFDM symbols of DMRS of PUSCH in time slots and/or transmission occasions; and/or splitting according to the number of REs of PUSCH in time slots and/or transmission occasions.
In another aspect of the present invention, there is provided a method performed by a user equipment in the wireless communication system, wherein the mapping mode comprises at least one of the following: determining RE for mapping UCI modulation symbols from the first symbol on PUSCH in the time slot and/or transmission occasion for mapping UCI according to the sequence of time from front to back; or mapping the UCI modulation symbol preferentially on the RE closest to the DMRS symbol.
In another aspect of the present invention, there is provided a method performed by a user equipment in the wireless communication system, comprising performing a second operation under the condition that a transport block over multi-slot physical uplink shared channel TBoMS PUSCH transmission is supported; transmitting the TBoMS PUSCH, wherein the second operation includes a rate matching RM operation and/or a bit interleaving operation.
In another aspect of the present invention, there is provided a method performed by a user equipment in the wireless communication system, wherein the rate matching RM operation comprises a continuous rate matching operation and/or a segmented rate matching operation, wherein the continuous rate matching operation includes: the starting position of rate matching output bits in the first time slot and/or transmission occasion is determined according to a given RV, and the starting position of rate matching output bits in the other slot(s) and/or transmission occasion is a position next to the ending position of rate matching output bits in the previous time slot and/or transmission occasion, and wherein the segmented rate matching operation includes: the starting position of rate matching output bits in each time slot and/or transmission occasion is acquired according to a given RV sequence.
In another aspect of the present invention, there is provided a method performed by a user equipment in the wireless communication system, wherein the continuous rate matching operation includes that the number of output bits after rate matching in one time slot and/or transmission occasion is determined by multiplying the number of REs available for transmitting data in the current time slot and/or transmission occasion by the modulation order of symbols.
In another aspect of the present invention, there is provided a method performed by a user equipment in the wireless communication system, wherein when a first condition is satisfied, a segmented rate matching operation is used, the first condition includes at least one of following: the number of time slots and/or transmission occasions occupied by the TBoMS PUSCH is less than a first value N1; the number of redundant versions RVs is less than the second value N2; the actual code rate of PUSCH transmission is less than the first threshold value; the ratio of the number of redundant RVs to the number of time slots and/or transmission occasions occupied by the TBoMS PUSCH is greater than the ratio of the actual code rate of PUSCH transmission to the code rate of PUSCH mother code.
In another aspect of the present invention, there is provided a method performed by a user equipment in the wireless communication system, in which, when a first condition is satisfied and it is determined to use the segmented rate matching operation, the user equipment enables a new RV design and/or a new RV sequence.
In another aspect of the present invention, there is provided a method performed by a user equipment in the wireless communication system, wherein the bit interleaving operation interleaves coded bits according to one of the following interleaving patterns, wherein the interleaving patterns include: the coded bits are coded bits after rate matching; the coded bits are coded bits on all time slots and/or transmission occasions occupied by TBoMS; the coded bits are coded bits on current time slots and/or transmission occasions from all time slots and/or transmission occasions occupied by TBoMS; and the interleaving pattern is preset or obtained by the system through network side configuration.
In another aspect of the present invention, there is provided a user equipment UE, which includes a transceiver and a controller configured to perform a first operation when a transport block over multi-slot physical uplink shared channel TBoMS PUSCH overlaps with a first uplink signal; and transmit the TBoMS PUSCH signal and/or the first uplink signal, wherein the first operation includes adjusting the transmission power for signal transmission of TBoMS PUSCH, increasing the priority of the TBoMS PUSCH, feeding back the information of power reduction to a base station and/or multiplexing uplink control information UCI carried by the first uplink signal on the TBoMS PUSCH for transmission.
In another aspect of the present invention, there is provided an electronic device comprising: a memory configured to store a computer program; and a processor configured to run the computer program to implement the method according to any one of the above embodiments. The disclosure also provides a computer-readable medium on which computer-executable instructions are stored, which, when executed, perform any of the methods described in the embodiments of the disclosure.
As used herein, “user equipment” or “UE” can refer to any terminal with wireless communication capability, including but not limited to mobile phones, cellular phones, smart phones or personal digital assistants (PDA), portable computers, image capturing devices such as digital cameras, game devices, music storage and playback devices, and any portable unit or terminal with wireless communication capability, or Internet facilities that allow wireless Internet access and browsing, etc.
As used herein, the term “base station” (BS) or “network equipment” can refer to eNB, eNodeB, NodeB, or base transceiver station (BTS) or gNB, etc., according to the used technology and terminology.
The “memory” here may be of any type suitable for the technical environment of this document, and can be implemented using any suitable data storage technology, including but not limited to semiconductor-based memory devices, magnetic memory devices and systems, optical memory devices and systems, fixed memory and mobile storage.
The processor here may be of any type suitable for the technical environment of this document, including but not limited to one or more of the following: general-purpose computers, special-purpose computers, microprocessors, digital signal processors DSPs, and processors based on a multi-core processor architecture.
The above description is only the preferred embodiment of the present invention, and it is not intended to limit the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
It can be understood by those skilled in the art that the present invention includes devices for performing one or more of the operations described in this application. These devices can be specially designed and manufactured for the required purposes, or they can also include known devices in general-purpose computers. These devices have stored therein computer programs that are selectively activated or reconfigured. Such a computer program can be stored in a device (e.g., computer) readable medium or in any type of medium suitable for storing electronic instructions and respectively coupled to a bus, including but not limited to any type of disk (including floppy disk, hard disk, optical disk, CD-ROM, and magneto-optical disk), ROM(Read-Only Memory), RAM(Random Access Memory), EPROM (erasable programmable read-only memory), EEPROM (electrically erasable programmable read-only memory), flash memory, magnetic card or optical card. That is, a readable medium includes any medium that stores or transmits information in a readable form by a device (e.g., a computer).
It can be understood by those skilled in the art that each block in these structural diagrams and/or block diagrams and/or flow diagrams and combinations of blocks in these structural diagrams and/or block diagrams and/or flow diagrams can be implemented by computer program instructions. Those skilled in the art can understand that these computer program instructions can be provided to a processor of a general-purpose computer, a professional computer or other programmable data processing methods for implementation, so that the scheme specified in the block or blocks of the structure diagram and/or block diagram and/or flow diagram disclosed by the present invention can be executed by the processor of the computer or other programmable data processing methods.
Those skilled in the art can understand that the steps, measures and schemes in various operations, methods and processes already discussed in the present invention can be alternated, changed, combined or deleted. Furthermore, other steps, measures and schemes in various operations, methods and processes already discussed in the present invention can also be alternated, changed, rearranged, decomposed, combined or deleted. Furthermore, the steps, measures and schemes in various operations, methods and processes disclosed in the prior art can also be alternated, changed, re-arranged, decomposed, combined or deleted.
The above is only a partial embodiment of the present invention. It should be pointed out that for those skilled in the art, without departing from the principle of the present invention, several improvements and embellishments can be made, which should also be regarded as the protection scope of the present invention.
Number | Date | Country | Kind |
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202110358433.4 | Apr 2021 | CN | national |
202110548045.2 | May 2021 | CN | national |
202110981742.7 | Aug 2021 | CN | national |
Filing Document | Filing Date | Country | Kind |
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PCT/KR2022/004699 | 4/1/2022 | WO |