Method and apparatus related to repetition transmission

Abstract

The disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. The present disclosure provides a method and device related to repetition transmission. In one aspect, a method performed by user equipment (UE) in a communication system comprising: determining whether a first condition related to repetition transmission is met; receiving first configuration information related to repetition transmission from a base station when the first condition is met; performing repetition transmission based on the first configuration information.

Description

METHOD AND APPARATUS RELATED TO REPETITION TRANSMISSION

[0001] The present disclosure relates to the field of communication, and more particularly, to a method and apparatus related to repetition transmission.

[0002] In order to meet the increasing demand for wireless data communication services since the deployment of 4G communication systems, efforts have been made to develop improved 5G or pre-5G communication systems. Therefore, 5G or pre-5G communication systems are also called "Beyond 4G networks" or "Post-LTE systems".

[0003] In order to achieve a higher data rate, 5G communication systems are implemented in higher frequency (millimeter, mmWave) bands, e.g., 60 GHz bands. In order to reduce propagation loss of radio waves and increase a transmission distance, technologies such as beamforming, massive multiple-input multiple-output (MIMO), full-dimensional MIMO (FD-MIMO), array antenna, analog beamforming and large-scale antenna are discussed in 5G communication systems.

[0004] In addition, in 5G communication systems, developments of system network improvement are underway based on advanced small cell, cloud radio access network (RAN), ultra-dense network, device-to-device (D2D) communication, wireless backhaul, mobile network, cooperative communication, coordinated multi-points (CoMP), reception-end interference cancellation, etc.

[0005] In 5G systems, hybrid FSK and QAM modulation (FQAM) and sliding window superposition coding (SWSC) as advanced coding modulation (ACM), and filter bank multicarrier (FBMC), non-orthogonal multiple access (NOMA) and sparse code multiple access (SCMA) as advanced access technologies have been developed.

[0006] 5th generation (5G) or new radio (NR) mobile communications is recently gathering increased momentum with all the worldwide technical activities on the various candidate technologies from industry and academia. The candidate enablers for the 5G / NR mobile communications include massive antenna technologies, from legacy cellular frequency bands up to high frequencies, to provide beamforming gain and support increased capacity, new waveform (e.g., a new radio access technology (RAT)) to flexibly accommodate various services / applications with different requirements, new multiple access schemes to support massive connections, and so on.

[0007] 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 6GHz" bands such as 3.5GHz, but also in "Above 6GHz" bands referred to as mmWave including 28GHz and 39GHz. In addition, it has been considered to implement 6G mobile communication technologies (referred to as Beyond 5G systems) in terahertz bands (for example, 95GHz to 3THz 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.

[0008] 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.

[0009] 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 unavailable, and positioning.

[0010] 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.

[0011] 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.

[0012] A method performed by user equipment (UE) in a communication system, comprising: determining whether a first condition related to repetition transmission is met; receiving first configuration information related to repetition transmission from a base station when the first condition is met; performing repetition transmission based on the first configuration information.

[0013] A method performed by a base station in a communication system, comprising: transmitting first configuration information related to repetition transmission to user equipment UE based on whether a first condition related to repetition transmission is met; receiving repetition transmissions based on the first configuration information from the UE.

[0014] FIG. 1 illustrates an example wireless network according to various embodiments of the present disclosure;

[0015] FIGs. 2a and 2b illustrate example wireless transmission and reception paths according to the present disclosure;

[0016] FIG. 3a shows an example user equipment according to the present disclosure and FIG. 3b shows an example base station according to the present disclosure;

[0017] FIG. 4 shows a schematic diagram of a contention-based random access procedure;

[0018] FIG. 5 shows a schematic diagram of a method related to repetition transmission performed by a UE according to at least one embodiment of the present disclosure;

[0019] FIG. 6 shows a schematic diagram of not transmitting repetition transmission exceeding the time span when repetition transmission for PUSCH conflicts with the time span;

[0020] FIG. 7 shows a schematic diagram of repetition transmission that exceeds the time span when repetition transmission for PUSCH conflicts with the time span;

[0021] FIG. 8 shows a structural diagram of a user equipment (UE) according to at least one embodiment of the present disclosure; and

[0022] FIG. 9 shows a schematic structural diagram of a network device according to at least one embodiment of the present disclosure.

[0023] According to at least one embodiment of the present disclosure, there is provided a method performed by user equipment (UE) in a communication system, comprising:

[0024] determining whether a first condition related to repetition transmission is met;

[0025] receiving first configuration information related to repetition transmission from a base station when the first condition is met;

[0026] performing repetition transmission based on the first configuration information.

[0027] In an implementation, the first condition includes at least one of the following:

[0028] measurement value of a downlink reference signal is not greater than a first threshold;

[0029] a payload size to be transmitted is not less than a second threshold;

[0030] UE determines that it needs to request repeated transmission of random access message 3;

[0031] UE selects a supplementary uplink (SUL) carrier;

[0032] UE determines to perform repeated transmission of random access;

[0033] UE selects random access type 1;

[0034] UE selects random access type 1 or random access type 2 in small data transmission.

[0035] In an implementation, when it is determined that the first condition is met, the UE requests repetition transmission from the base station,

[0036] wherein, the requesting repetition transmission from the base station includes transmitting a request for repetition transmission to the base station or transmitting a signal to the base station using a first resource associated with requesting repetition transmission.

[0037] In an implementation, the request for repetition transmission is transmitted through random access message 3 or through a second resource for transmitting the request for repetition transmission, and the second resource is determined based on at least one of the following information configured by the base station: PUCCH format, sequence index and time-frequency resource configuration.

[0038] In an implementation, the first threshold or the second threshold is obtained based on at least one of the following: information related to a threshold configured by the base station for repetition transmission, and an already configured threshold of the UE.

[0039] In an implementation, when a number of times that the first condition is met reaches a third threshold, the UE requests repetition transmission from the base station, wherein the third threshold is configured by the base station for repetition transmission or is obtained based on an already configured threshold of the UE.

[0040] In an implementation, the request for repetition transmission includes at least one of the following:

[0041] request information on repetition transmission;

[0042] information related to an expected number of repetition transmissions;

[0043] information related to an expected time duration for repetition transmission.

[0044] In an implementation, the information related to an expected time duration for repetition transmission includes at least one of the following:

[0045] information of a time window;

[0046] a start of time units of the time duration;

[0047] a number of time units of the time duration;

[0048] a maximum number of PUSCHs with repetition transmission.

[0049] In an implementation, the method further includes receiving second configuration information related to repetition transmission from the base station,

[0050] wherein the second configuration information is used by the UE to determine whether to request repetition transmission, and the second configuration information includes at least one of:

[0051] indication information of whether repetition transmission is supported or enabled;

[0052] information about a repetition transmission number or a set of repetition transmission numbers supported or enabled;

[0053] threshold information related to trigger of repetition transmission;

[0054] resource configuration information related to requesting repetition transmission.

[0055] In an implementation, the first resource is determined based on the resource configuration information related to requesting repetition transmission,

[0056] wherein, transmitting a signal to the base station using the first resource includes transmitting a random access message to the base station using the first resource or transmitting a response to a random access message from the base station using the first resource.

[0057] In an implementation, the second configuration information is received through at least one of the following ways:

[0058] PDCCH scheduling PDSCH carrying system information;

[0059] in system information or broadcast information;

[0060] message 2 of random access;

[0061] message B of two-step random access;

[0062] message 4 of random access;

[0063] control information or signaling specific to repetition transmission;

[0064] control information or signaling specific to user equipment type;

[0065] using existing bit field;

[0066] using reserved bits.

[0067] In an implementation, the resource configuration information related to requesting repetition transmission includes indication information of the first resource,

[0068] the indication information of the first resource includes at least one of the following:

[0069] information indicating a preamble or a set of preambles related to requesting repetition transmission,

[0070] information indicating a random access occasion RO or a set of ROs related to requesting repetition transmission,

[0071] information indicating a demodulation reference signal DMRS resource or a set of DMRS resources related to requesting repetition transmission,

[0072] information indicating physical uplink shared channel PUSCH occasion PO or a set of POs related to requesting repetition transmission,

[0073] information indicating spreading code related to requesting repetition transmission;

[0074] information indicating a cyclic shift CS index or offset related to requesting repetition transmission;

[0075] information indicating a phase rotation related to requesting repetition transmission;

[0076] indication information of a downlink reference signal, the downlink reference signal is associated with at least one of a preamble, an RO, a DMRS resource and a PO.

[0077] In an implementation, the first configuration information includes at least one of:

[0078] indication information on whether to approve or enable repetition transmission;

[0079] indication information on whether to approve or enable a requested repetition transmission number;

[0080] a repetition transmission number;

[0081] indication information on whether to approve or enable a requested time duration of repetition transmission;

[0082] a time duration of repetition transmission;

[0083] resource configuration information associated with whether subsequent uplink (UL) transmission needs repetition transmission.

[0084] In an implementation, the resource configuration information associated with whether subsequent uplink transmission needs repetition transmission includes configuration information of first UL resource and second UL resource,

[0085] wherein, if the subsequent UL transmission does not need repetition transmission, the UE selects the first UL resource, and if the subsequent UL transmission needs repetition transmission, the UE selects the second UL resource.

[0086] In an implementation, the first configuration information is received through at least one of the following:

[0087] random access message;

[0088] control information or signaling for repetition transmission;

[0089] control information or signaling for a first UE type;

[0090] reusing existing bits;

[0091] reserved bits.

[0092] In an implementation, the random access message includes a random access response or a contention resolution message.

[0093] In an implementation, the UE selects one of the first and second UL resources to perform repetition transmission based on whether the subsequent UL transmission needs repetition transmission.

[0094] In an implementation, the method further comprises stopping repetition transmission in at least one of the following cases:

[0095] repetition transmission corresponding to a single PUSCH is completed;

[0096] repetition transmission has been performed for the time duration;

[0097] repetition transmission has been performed for the number of times of repetitions.

[0098] In an implementation, if at least one of multiple repetition transmissions for PUSCH is not transmitted at the end of the time duration, then:

[0099] abandoning transmission of the at least one repetition transmission, or

[0100] performing transmission of the at least one repetition transmission.

[0101] According to at least one embodiment of the present disclosure, there is provided a method performed by a base station in a communication system, comprising:

[0102] transmitting first configuration information related to repetition transmission to user equipment (UE) based on whether a first condition related to repetition transmission is met;

[0103] receiving repetition transmissions transmitted based on the first configuration information from the UE.

[0104] In an implementation, the first condition includes at least one of:

[0105] a measurement value of a downlink reference signal is not greater than a first threshold;

[0106] a payload size to be transmitted is not less than a second threshold;

[0107] the UE determines that it needs to request repeated transmission of random access message 3;

[0108] the UE selects a supplementary uplink (SUL) carrier;

[0109] the UE determines to perform repeated transmission of random access;

[0110] the UE selects random access type 1;

[0111] the UE selects random access type 1 or random access type 2 in small data transmission.

[0112] In an implementation, the method further comprises: receiving a request for repetition transmission from the UE when the first condition is met, including receiving a request for repetition transmission from the UE or a signal transmitted using a first resource associated with the request for repetition transmission.

[0113] In an implementation, the request for repetition transmission is transmitted through random access message 3, or through a second resource for transmitting the request for repetition transmission, and the second resource is determined based on at least one of the following information configured by the base station: PUCCH format, sequence index, and time-frequency resource configuration.

[0114] In an implementation, the first threshold or the second threshold is obtained based on at least one of: information related to a threshold configured by the base station for repetition transmission, and an already configured threshold of the UE.

[0115] In an implementation, when a number of times the first condition is met reaches a third threshold, receiving the request for repetition transmission from the UE, wherein the third threshold is configured by the base station for repetition transmission or is obtained based on an already configured threshold of the UE.

[0116] In an implementation, the request for repetition transmission includes at least one of:

[0117] request information on repetition transmission;

[0118] information related to an expected repetition transmission number;

[0119] information related to an expected time duration of repetition transmission.

[0120] In an implementation, the information related to an expected time duration of repetition transmission includes at least one of:

[0121] information of a time window;

[0122] a start of time units of the time duration;

[0123] a number of time units of the time duration;

[0124] a maximum number of PUSCHs with repetition transmission.

[0125] In an implementation, the method further comprises: transmitting second configuration information related to repetition transmission to the UE,

[0126] wherein the second configuration information is for the UE to determine whether to request repetition transmission, and the second configuration information includes at least one of:

[0127] indication information of whether repetition transmission is supported or enabled;

[0128] information about a repetition transmission number or a set of repetition transmission numbers supported or enabled;

[0129] threshold information related to trigger of repetition transmission;

[0130] resource configuration information related to requesting repetition transmission.

[0131] In an implementation, the first resource is determined based on the resource configuration information related to requesting repetition transmission,

[0132] wherein, the signal transmitted using the first resource associated with requesting repetition transmission includes a random access message transmitted using the first resource or a response to a random access message of the base station transmitted using the first resource.

[0133] In an implementation, the second configuration information is transmitted through at least one of the following ways:

[0134] PDCCH scheduling PDSCH carrying system information;

[0135] in system information or broadcast information;

[0136] message 2 of random access;

[0137] message B of two-step random access;

[0138] message 4 of random access;

[0139] control information or signaling specific to repetition transmission;

[0140] control information or signaling specific to user equipment type;

[0141] existing bit field;

[0142] reserved bits.

[0143] In an implementation, the resource configuration information related to requesting repetition transmission includes indication information of a first resource,

[0144] the indication information of the first resource includes at least one of:

[0145] information indicating a preamble or a set of preambles related to requesting repetition transmission,

[0146] information indicating a random access occasion RO or a set of ROs related to requesting repetition transmission,

[0147] information indicating a demodulation reference signal DMRS resource or a set of DMRS resources related to requesting repetition transmission,

[0148] information indicating physical uplink shared channel PUSCH occasion PO or a set of POs related to requesting repetition transmission,

[0149] information indicating spreading code related to requesting repetition transmission;

[0150] information indicating a cyclic shift CS index or offset related to requesting repetition transmission;

[0151] information indicating a phase rotation related to requesting repetition transmission;

[0152] indication information of a downlink reference signal, the downlink reference signal is associated with at least one of a preamble, an RO, a DMRS resource and a PO.

[0153] In an implementation, the first configuration information includes at least one of:

[0154] indication information on whether to approve or enable repetition transmission;

[0155] indication information on whether to approve or enable a requested repetition transmission number;

[0156] a repetition transmission number;

[0157] indication information on whether to approve or enable a requested time duration of repetition transmission;

[0158] a time duration of repetition transmission;

[0159] resource configuration information associated with whether subsequent uplink (UL) transmission needs repetition transmission.

[0160] In an implementation, the resource configuration information associated with whether the subsequent uplink transmission needs repetition transmission includes configuration information of a first UL resource and a second UL resource,

[0161] wherein, the first UL resource corresponding to subsequent UL transmission of the UE not needing repetition transmission, and the second UL resource corresponding to subsequent UL transmission of the UE needing repetition transmission.

[0162] In an implementation, the first configuration information is received through at least one of the following ways:

[0163] random access message;

[0164] control information or signaling for repetition transmission;

[0165] control information or signaling for a first UE type;

[0166] reusing existing bits;

[0167] reserved bits.

[0168] In an implementation, the random access message includes a random access response or a contention resolution message.

[0169] In an implementation, the base station determines whether the subsequent UL transmission of the UE needs repetition transmission based on whether the repetition transmission is received on the first UL resource or the second UL resource.

[0170] According to at least one embodiment of the present disclosure, there is provided a user equipment (UE), including a transceiver configured to transmit and / or receive signals; a controller configured to control the UE to perform the method according to the embodiment of the present disclosure.

[0171] According to at least one embodiment of the present disclosure, there is provided a base station including a transceiver configured to transmit and / or receive signals; a controller configured to control the base station to perform the method according to the embodiment of the present disclosure.

[0172] The following description with reference to the accompanying drawings is provided to facilitate a comprehensive understanding of various embodiments of the present disclosure defined by the claims and their equivalents. This description includes various specific details to facilitate understanding but should only be considered as exemplary. Therefore, those skilled in the art will recognize that various changes and modifications can be made to the various embodiments described herein without departing from the scope and spirit of the present disclosure. In addition, for the sake of clarity and conciseness, descriptions of well-known functions and structures may be omitted.

[0173] The terms and expressions used in the following specification and claims are not limited to their dictionary meanings, but are only used by the inventors to enable a clear and consistent understanding of the present disclosure. Therefore, it should be obvious to those skilled in the art that the following descriptions of various embodiments of the present disclosure are provided for illustration purposes only and are not intended to limit the purposes of the present disclosure as defined in the appended claims and their equivalents.

[0174] It should be understood that singular forms of "a", "an" and "the" include plural referents unless the context clearly indicates otherwise. Thus, for example, a reference to a "component surface" includes a reference to one or more such surfaces.

[0175] The terms "include" or "may include" refer to the existence of a corresponding disclosed function, operation or component that can be used in various embodiments of the present disclosure, and do not limit the existence of one or more additional functions, operations or features. In addition, the terms "including" or "having" can be interpreted as indicating certain characteristics, numbers, steps, operations, constituent elements, components or combinations thereof, but should not be interpreted as excluding the possibility of the existence of one or more other characteristics, numbers, steps, operations, constituent elements, components or combinations thereof.

[0176] The term "or" used in various embodiments of the present disclosure includes any of the listed terms and all combinations thereof. For example, "a or b" may include a, may include b, or may include both a and b.

[0177] Unless defined differently, all terms (including technical terms or scientific terms) used in this disclosure have the same meaning as those understood by those skilled in the art in this disclosure. Common terms, as defined in dictionaries, are interpreted as having meanings consistent with the context in the relevant technical fields, and should not be interpreted in an idealized or overly formal way unless explicitly defined in this disclosure.

[0178] The technical solution of the embodiment of the application can be applied to various communication systems, such as the Global System for Mobile Communications (GSM) system, code division multiple access (CDMA) system, wideband code division multiple access (WCDMA) system, general packet radio service (GPRS), long term evolution (LTE) system, LTE frequency division duplex (FDD) system, LTE time division duplex (TDD), universal mobile telecommunications system (UMTS), worldwide interoperability for microwave access (WiMAX) communication system, 5th generation (5G) system or new radio (NR), etc. In addition, the technical solution of the embodiment of the application can be applied to future-oriented communication technologies.

[0179] FIG. 1 illustrates an example wireless network 100 according to various embodiments of the present disclosure. The embodiment of the wireless network 100 shown in FIG. 1 is for illustration only. Other embodiments of the wireless network 100 can be used without departing from the scope of the present disclosure.

[0180] 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.

[0181] 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).

[0182] 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.

[0183] 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.

[0184] 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.

[0185] Although FIG. 1 illustrates an example of the wireless network 100, various changes can be made to FIG. 1. The wireless network 100 can include any number of gNBs and any number of UEs in any suitable arrangement, for example. Furthermore, gNB 101 can directly communicate with any number of UEs and provide wireless broadband access to the network 130 for those UEs. Similarly, each gNB 102-103 can directly communicate with the network 130 and provide direct wireless broadband access to the network 130 for the UEs. In addition, gNB 101, 102 and / or 103 can provide access to other or additional external networks, such as external telephone networks or other types of data networks.

[0186] FIGs. 2a and 2b illustrate example wireless transmission and reception paths according to the present disclosure. In the following description, the transmission path 200 can be described as being implemented in a gNB, such as gNB 102, and the reception path 250 can be described as being implemented in a UE, such as UE 116. However, it should be understood that the reception path 250 can be implemented in a gNB and the transmission path 200 can be implemented in a UE. In some embodiments, the reception path 250 is configured to support codebook designs and structures for systems with 2D antenna arrays as described in embodiments of the present disclosure.

[0187] 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.

[0188] 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.

[0189] 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.

[0190] 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.

[0191] Each of the components in FIGs. 2a and 2b can be implemented using only hardware, or using a combination of hardware and software / firmware. As a specific example, at least some of the components in FIGs. 2a and 2b may be implemented in software, while other components may be implemented in configurable hardware or a combination of software and configurable hardware. For example, the FFT block 270 and IFFT block 215 may be implemented as configurable software algorithms, in which the value of the size N may be modified according to the implementation.

[0192] 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.).

[0193] Although FIGs. 2a and 2b illustrate examples of wireless transmission and reception paths, various changes may be made to FIGs. 2a and 2b. For example, various components in FIGs. 2a and 2b can be combined, further subdivided or omitted, and additional components can be added according to specific requirements. Furthermore, FIGs. 2a and 2b are intended to illustrate examples of types of transmission and reception paths that can be used in a wireless network. Any other suitable architecture can be used to support wireless communication in a wireless network.

[0194] FIG. 3a illustrates an example UE 116 according to the present disclosure. The embodiment of UE 116 shown in FIG. 3a is for illustration only, and UEs 111-115 of FIG. 1 can have the same or similar configuration. However, a UE has various configurations, and FIG. 3a does not limit the scope of the present disclosure to any specific implementation of the UE.

[0195] 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.

[0196] 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).

[0197] 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.

[0198] 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.

[0199] The processor / controller 340 is also capable of executing 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.

[0200] 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).

[0201] Although FIG. 3a illustrates an example of UE 116, various changes can be made to FIG. 3a. For example, various components in FIG. 3a can be combined, further subdivided or omitted, and additional components can be added according to specific requirements. As a specific example, the processor / controller 340 can be divided into a plurality of processors, such as one or more central processing units (CPUs) and one or more graphics processing units (GPUs). Furthermore, although FIG. 3a illustrates that the UE 116 is configured as a mobile phone or a smart phone, UEs can be configured to operate as other types of mobile or fixed devices.

[0202] FIG. 3b illustrates an example gNB 102 according to the present disclosure. The embodiment of gNB 102 shown in FIG. 3b is for illustration only, and other gNBs of FIG. 1 can have the same or similar configuration. However, a gNB has various configurations, and FIG. 3b does not limit the scope of the present disclosure to any specific implementation of a gNB. It should be noted that gNB 101 and gNB 103 can include the same or similar structures as gNB 102.

[0203] As shown in FIG. 3b, gNB 102 includes a plurality of antennas 370a-370n, a plurality of RF transceivers 372a-372n, a transmission (TX) processing circuit 374, and a reception (RX) processing circuit 376. In certain embodiments, one or more of the plurality of antennas 370a-370n include a 2D antenna array. gNB 102 also includes a controller / processor 378, a memory 380, and a backhaul or network interface 382.

[0204] 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.

[0205] 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.

[0206] 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.

[0207] The controller / processor 378 is also capable of executing 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.

[0208] 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.

[0209] 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.

[0210] 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.

[0211] Although FIG. 3b illustrates an example of gNB 102, various changes may be made to FIG. 3b. For example, gNB 102 can include any number of each component shown in FIG. 3a. As a specific example, the access point can include many backhaul or network interfaces 382, and the controller / processor 378 can support routing functions to route data between different network addresses. As another specific example, although shown as including a single instance of the TX processing circuit 374 and a single instance of the RX processing circuit 376, gNB 102 can include multiple instances of each (such as one for each RF transceiver).

[0212] The time domain unit (also called time unit) in this application can be: an OFDM symbol, an OFDM symbol group (composed of multiple OFDM symbols), a slot, a slot group (composed of multiple slots), a subframe, a subframe group (composed of multiple subframes), a system frame and a system frame group (composed of multiple system frames); it can also be an absolute time unit, such as 1 millisecond, 1 second, etc. A time unit can also be a combination of various granularities, such as N1 slots plus N2 OFDM symbols.

[0213] The frequency domain unit (also called frequency unit) in this application 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 bandwidth part (BWP). 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 multiple granularities, such as M1 PRBs plus M2 subcarriers.

[0214] Exemplary embodiments of the present disclosure are further described below with reference to the accompanying drawings.

[0215] Text and drawings are provided as examples only to help readers understand the present disclosure. They are not intended and should not be construed to limit the scope of the present disclosure in any way. Although certain 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.

[0216] It can be understood by those skilled in the art that the singular forms "a", "an", "the" and "the" used herein can also include plural forms unless specifically stated. It should be further understood that the word "comprising" used in the specification of this application refers to 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 we say that an element is "connected" or "coupled" to another element, it can be directly connected or coupled to the other element, or intervening elements may also exist. Furthermore, "connected" or "coupled" as used herein 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.

[0217] It can be understood by those skilled in the art that unless otherwise defined, all terms (including technical terms and scientific terms) used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs. It should also be understood that terms, such as those defined in general dictionaries, should be understood to have meanings consistent with those in the context of the prior art, and will not be interpreted in an idealized or overly formal sense unless they are specifically defined as here.

[0218] In this description, "user" and "user equipment" or "UE" can be used interchangeably unless the context indicates otherwise. It can be understood by those skilled in the technical field that the terms "terminal", "terminal equipment", "user", "user equipment" and "UE" used here include both the equipment of wireless signal receiver, which only has the equipment of wireless signal receiver without transmission capability, and the equipment of receiving and transmitting hardware, which has the equipment of receiving and transmitting hardware capable of two-way communication on a two-way communication link. Such devices may include a cellular or other communication device having a single-line display or a multi-line display or a cellular or other communication device without a 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 RF receiver, pager, Internet / Intranet access, web browser, notepad, calendar and / or GPS(Global Positioning System) receiver; a conventional laptop and / or palmtop computer or other device having and / or including a radio frequency receiver. As used herein, "terminal" and "terminal equipment" can be portable, transportable, installed in vehicles (air, sea and / or land), or suitable and / or configured to operate locally, and / or operate in any other location on the earth and / or space in a distributed form. The "terminal" and "terminal equipment" used here can also be communication terminals, internet terminals and music / video playing terminals, such as PDA, mobile internet device (Mobile Internet Device) and / or mobile phone with music / video playing function, as well as smart TV, set-top box and other devices.

[0219] Without departing from the scope of the present invention, the term "transmit" in the present invention can be used interchangeably with "transmission", "report" and "notification".

[0220] Text and drawings are provided as examples only to help readers understand the present disclosure. They are not intended and should not be construed to limit the scope of the present disclosure in any way. Although certain 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.

[0221] The transmission link of wireless communication system mainly includes: downlink communication link from 5G gNB to User Equipment (UE) and uplink communication link from UE to network.

[0222] Nodes used for positioning measurement in wireless communication systems, such as current wireless communication systems, include: UE that initiates a positioning request message, Location Management Function (LMF) that is for UE positioning and transmitting positioning assistance data, gNB or transmission-reception point (TRP) that broadcasts positioning assistance data and performs uplink positioning measurement, and UE that is for downlink positioning measurement. In addition, the method of the present invention can also be extended to other communication systems, such as automobile communication (V2X), such as sidelink communication, in which the transmitting and receiving point or UE can be any device in V2X.

[0223] Transmission in a wireless communication system includes: transmission from a base station (gNB) to User Equipment (UE) (called downlink transmission), corresponding slots are called downlink slots, transmission from UE to the base station (called uplink transmission), and corresponding slots are called uplink slots.

[0224] In the downlink communication of wireless communication system, the system transmits synchronization signals and broadcast channels to users through synchronization signal / PBCH block (SSB) with periodicity, which is called SSB periodicity, or SSB burst periodicity. At the same time, the base station will configure a physical random access channel (PRACH) configuration period, during which a certain number of random access transmission occasions (also called random access occasions, PRACH transmission occasion, RO) are configured, and it is met that all SSBs can be mapped to corresponding RO(s) in an association period (a certain time span), and all SSBs within one SSB periodicity can be mapped to the required random access resources in one SSB-to-RO mapping cycle, and there can be one or more mapping cycles in one association period. An SSB to RO association pattern period contains one or more association periods, and the association pattern from SSB to RO in each association pattern period is the same.

[0225] In the New Radio (NR) communication system, before the establishment of Radio Resource Control (RRC) connection, for example, in random access procedure, the performance of random access directly affects the user's experience. In traditional wireless communication systems, such as LTE, LTE-Advanced, 5G or NR, random access procedure is used in many scenarios, such as initial link establishment, cell handover, re-establishment of uplink, RRC connection reestablishment and so on, and it is divided into contention-based Random Access (CBRA) and contention-free random access (CFRA) according to whether users monopolize the preamble resources. Because in the contention-based random access, each user selects a preamble sequence from the same preamble sequence resource when trying to establish the uplink, it may appear that multiple users select the same preamble sequence and transmit it to the base station. In such scenario, contention resolution mechanism has become an important research direction in random access. wherein, how to reduce the contention probability and how to quickly solve the contention that have occurred are the key indicators that affect the random access performance.

[0226] Random access includes 4-step random access (4-Step RACH) and 2-step random access (2-Step RACH). 4-step random access can include contention-based random access (CBRA) and contention-free random access (CFRA). In the 4-step random access, contention-based random access procedure is divided into four steps, as shown in FIG. 4. In the first step, the user randomly selects a preamble sequence from the preamble sequence resource pool and transmits it to the base station, that is, the UE transmits the first message (Message 1, Msg1) to the base station. The base station performs correlation detection on the received signal, thereby identifying the preamble sequence transmitted by the user; in the second step, the base station transmits a Random Access Response (RAR) to the user, that is, the base station transmits a second message (Message 2, Msg2) to the UE, the RAR includes a random access preamble sequence identifier, a timing advance instruction determined according to the time delay estimation between the user and the base station, a temporary cell radio network identifier (C-RNTI), and time-frequency resources allocated for the next uplink transmission of the user. In the third step, the user transmits a third message (message 3, Msg3) to the base station according to the information in the RAR. Msg3 contains information such as user terminal identifier and RRC connection request, where the user terminal identifier is unique to the user and is used for contention resolution; in the fourth step, the base station transmits a fourth message (Message 4, Msg4) to the user, that is, a contention resolution message, which includes a contention resolution identifier, indicating identifier of the user terminal that won in the contention resolution. After the user detects its own identifier, it upgrades the temporary C-RNTI to C-RNTI, transmits an ACK signal to the base station through the feedback channel to complete the random access procedure, and waits for the scheduling of the base station. Otherwise, the user will start a new random access procedure after a delay.

[0227] For contention-free random access procedure in 4-step random access, the base station knows the user identifier and can assign the preamble sequence to the user. Therefore, when transmitting the preamble sequence, the user does not need to randomly select the sequence, but will use the allocated preamble sequence to transmit a random access message (Msg1) to the base station. After detecting the allocated preamble sequence, the base station will transmit a corresponding random access response (Msg2), including information such as timing advance and uplink resource allocation. After receiving the random access response, the user thinks that the uplink synchronization has been completed and waits for the further scheduling of the base station. Therefore, contention-free random access procedure in 4-step random access only includes two steps: step 1 is to transmit a preamble sequence through Msg1; step 2 is to transmit a random access response through Msg2.

[0228] In 2-step random access, contention-based random access includes the following two steps:

[0229] Step 1: UE transmits an uplink message MsgA to a base station, which may include the contents transmitted by PRACH and PUSCH;

[0230] Step 2: After receiving MsgA, the base station transmits a downlink message MsgB to the UE, which includes RAR and can be used for contention resolution.

[0231] In addition, 2-step random access can also include contention-free random access. Contention-free random access also includes the steps of UE transmitting MsgA and base station transmitting MsgB, where the preamble sequence included in MsgA is not randomly selected, but allocated by the base station.

[0232] Random access procedure is suitable for the following scenarios:

[0233] 1. initial access under RRC_IDLE;

[0234] 2. Re-establish RRC connection;

[0235] 3. Cell handover;

[0236] 4. Downlink data arrives in RRC connected state and random access procedure is requested (when the uplink is asynchronous);

[0237] 5. Uplink data arrives in RRC connected state and random access procedure is requested (when the uplink is asynchronous or no resources are allocated to the scheduling request);

[0238] 6. positioning.

[0239] In some network systems, after the UE completes the random access process, it will take some time to complete the registration with the network and application of various corresponding configuration. At this time, only the simple downlink control information (DCI) format (for example, DCI 0_0 or other DCI formats) is used to schedule downlink transmission. However, when scheduling the uplink transmission based on the simple downlink control information format, the UE cannot be configured with repetition transmission, so the UE cannot repeatedly transmit the uplink signal in the scenario. However, the UE may be in a relatively far position from the base station at this time, and it is necessary to use repetition transmission to improve the reliability and other performance of uplink transmission. Therefore, how to support UE to perform repetition transmission in such situation is a problem that needs to be solved. In addition, for some specific types of UE (e.g., low-cost UE, such as Tag, etc.), only uplink transmission scheduled using simple DCI format is supported, but this type of UE may also need repetition transmission. How to support this specific type of UE for repetition transmission is also a problem that needs to be solved. What has been described above is only some illustrative and non-limiting descriptions of the scenarios to which the technical principles of the present disclosure can be applied. It can be understood that there are other scenarios that need to enable UE for repetition transmission, in which the technical principles of the present disclosure can also be applied.

[0240] At least one embodiment of the present disclosure provides a method and device related to repetition transmission. The method is beneficial for the UE to complete repeated transmission of uplink signals in some scenarios, such as when the base station has not used the downlink control information format supporting scheduling repetition transmission to schedule the uplink transmission of the UE during the first one or more uplink transmissions of the UE after completing the random access procedure; in addition, this method can also be applied to some future UEs, such as low-cost UEs (such as tags), which are not provided with relatively complex downlink control information formats to support repetition transmission. Through the method provided by the embodiment of the present disclosure, these UEs can be enabled to perform repetition transmission. Normal UEs or UE not provided with DCI format for supporting repetition transmission in such scenario still have requirement for repetition transmission, and the method provided by the embodiments of the present disclosure can enable repetitions in such scenario and / or enable such UE to perform repetition transmission.

[0241] FIG. 5 shows a schematic diagram of a method 500 related to repetition transmission performed by a UE according to at least one embodiment of the present disclosure. As shown in FIG. 5, the method 500 may include the following steps 501-503:

[0242] Step 501: determine whether a first condition related to repetition transmission is met;

[0243] Step 502: when the first condition is met, receiving first configuration information related to repetition transmission from the base station;

[0244] Step 503: performing repetition transmission based on the first configuration information. Through the method 500, the UE can request repetition transmission from the network device (such as the base station) when a certain condition is met, or the UE can make the base station identity that the UE needs repetition transmission when a certain condition is met, so that the base station can transmit relevant configuration information to the UE for repetition transmission.

[0245] In some implementations, before performing the method 500, the UE may perform the following steps:

[0246] ●Receiving configuration information (for example, called second configuration information) related to repetition transmission transmitted by other nodes (such as network device).

[0247] Wherein the second configuration information includes one or more of:

[0248] ◆Indication of whether repetition transmission is supported or enabled; for example, using 1 bit to signal, "1" means supporting or enabling the function of repetition transmission, and "0" means not supporting or enabling the function of repetition transmission; and vice versa;

[0249] ◆Supported or enabled numbers of times or set of numbers of times for repetition transmission, for example, 2-bit signaling is used to inform four supported numbers of times for repetition transmission, {rep0, rep1, rep2, rep3}, where rep0, rep1, rep2, rep3 are all non-negative integers; for example, rep0=1, rep1=2, rep2=4, REP3 = 8; the above numerical values are only exemplary and can be extended to other numerical values and / or the other number of numerical values; in an implementation, the values of the number of times for repetition transmission can also be preset.

[0250] ◆The threshold information related to the trigger of repetition transmission, for example, the threshold related to the trigger condition of repetition transmission, may include, for example, the threshold related to the measurement value of the downlink reference signal, the threshold related to the payload size to be transmitted, and so on. In addition, in an implementation, the threshold information may also include the threshold for the number of times the trigger condition is met.

[0251] In an implementation, the value of the repetition transmission number or the set of values of the repetition transmission numbers may be the same as a value of the repetition transmission number or a set of values of the repetition transmission numbers configured by other function, or reuses the value of the repetition transmission number or the set of values of the repetition transmission numbers configured by other function; the other function may be, for example, for repeated transmission of message 3, or for repeated transmission of random access (or multiple random access transmissions), or for repeated transmission of specific PUSCH, etc.

[0252] In an implementation, the way for the UE to receive the second configuration information transmitted by the other node (such as network device) includes at least one of the following:

[0253] ◆ Receiving through a PDCCH scheduling PDSCH carrying system messages;

[0254] ◆ Receiving through system information or broadcast information;

[0255] ◆ Receiving through message 2 of random access (including the PDCCH and / or PDSCH of message 2, such as RAR);

[0256] ◆ Receiving through message B of two-step random access (including the PDCCH and / or PDSCH of message B, such as RAR);

[0257] ◆ Received through message 4 of random access (including the PDCCH and / or PDSCH of the message 4, such as a contention resolution message);

[0258] ◆ Received through dedicated and specific control information or signaling, such as control information or signaling specific to repetition transmission, or control information or signaling specific to a user equipment type (such as low-cost user equipment such as Tag, etc.);

[0259] ◆ Using all or part of the bits in the existing bit field for notification; using an existing bit field in DCI or PDCCH, such as MCS bit field, DAI bit field, NDI bit field, etc.

[0260] ◆ Using reserved bits for notification; e.g., unused reserved bits in the PDCCH for the random access message 2.

[0261] In some implementations, before performing the method 500, the UE may perform the following steps:

[0262] ●Trigger of repetition transmission, in which the UE determines whether repetition transmission is needed.

[0263] In an implementation, the UE determines whether the condition for repetition transmission is triggered according to a first condition, that is, when the first condition is met, the UE determines that repetition transmission is needed, the first condition includes at least one of the following:

[0264] ◆ The measurement value of the downlink reference signal (for example, the reference signal reception strength (RSRP) or the reference signal reception quality RSRQ) is lower than (or not greater than) the first threshold. For example, the measurement value may include at least one of the following: a single measurement value (e.g., L1-RSRP), multiple measurement values, or a value calculated (e.g., smooth average) from multiple measurement values (e.g., L3-RSRP);

[0265] ▷ Wherein, the first threshold can be independently configured, or obtained according to the RSRP threshold configured by other function, including being the same as the RSRP threshold configured by other function, or increasing or decreasing a certain RSRP change value on the RSRP threshold configured by other function, or multiplying or dividing a certain RSRP change ratio value on the RSRP threshold configured by other function, or reusing the RSRP threshold configured by other function, the other function including message 3 (msg3) repetition, multiple random access transmissions (multiple PRACH transmissions), etc.

[0266] ▷ Wherein, one or more measurement values can be measurement values obtained under a certain condition, wherein the certain condition includes at least one of the following: within the set first time unit, before the expiration of the first timer, the first counter does not reach the maximum value, a specific downlink reference signal, etc.; wherein, the set first time unit, the value of the first timer, the maximum value of the first counter and the specific downlink reference signal can be obtained through the above configuration information related to repetition transmission;

[0267] ▷ Wherein, the downlink reference signal may be at least one of SSB, CSI-RS (Channel State Information Reference Signal), PRS (Positioning Reference Signal), or signals transmitted to the UE from other nodes;

[0268] ▷ Wherein, the first threshold, the increased or decreased certain RSRP change value, and the multiplied or divided certain RSRP change ratio value can be obtained through configuration information (the above configuration information related to repetition transmission) from other nodes (such as network device), or preset;

[0269] ◆ The payload size to be transmitted is greater than (or not less than) the second threshold, wherein:

[0270] ▷ The payload size to be transmitted is the payload size to be transmitted by the UE or the payload size to be transmitted by the UE under a certain condition; the certain condition includes at least one of the following: within the set second time unit, before the expiration of the second timer, the second counter does not reach the maximum value, etc; wherein, the set second time unit, the value of the second timer and the maximum value of the second counter can be obtained by the above configuration information related to repetition transmission;

[0271] ▷ The second threshold is independently configured or obtained according to other threshold, including reusing other threshold, or adding or subtracting a certain change value according to other threshold, or multiplying or dividing a certain proportion value according to other threshold; the other threshold includes, but is not limited to, the threshold for message 3 payload size;

[0272] ▷ The second threshold, or the certain change value, or the certain proportion value may be obtained from configuration information (for example, the above configuration information related to repetition transmission) from other node (such as network device), or preset;

[0273] ◆ When other function meets the trigger condition of the other function, including but not limited to:

[0274] ▷ The condition for repeated transmission of message 3 is met; for example, the UE determines that it needs to request message 3 to be transmitted repeatedly;

[0275] ▷ The condition for selecting a Supplementary Uplink carrier (SUL carrier) is met; for example, the UE determines to select the SUL carrier;

[0276] ▷ The condition for selecting multiple random access transmissions (multiple PRACH transmission, or repeated transmission of random access) is met, for example, the UE determines to perform multiple random access transmissions (or repeated transmission of random access);

[0277] ▷ The condition for selecting 4-step random access (random access type 1) is met, for example, UE determines to perform 4-step random access instead of two-step random access (random access type 2);

[0278] ▷ The condition for selecting two-step random access (random access type 2) or 4-step random access (random access type 1) in small data transmission (SDT) is met, for example, the UE determines to perform two-step random access or 4-step random access, and does not select the configured grant small data transmission (CG SDT).

[0279] In an implementation, when the UE determines that the condition for repeated transmission of message 3, selection of SUL carrier, selection of multiple random access transmission, selection of 4-step random access, or selection of two-step random access is met, the UE may request repetition transmission from the base station to trigger the base station to transmit configuration information related to repetition transmission to the UE. In another implementation, the UE will not request repetition transmission from the base station, but the base station triggers to configure the configuration information related to repetition transmission for the UE according to the behavior of the UE after the above conditions are met. For example, when the UE determines that the condition for repeated transmission of message 3 is met, the UE performs the procedure of repetition transmission and / or the procedure of repeated transmission of message 3, and the UE can receive the configuration information on repetition transmission and the configuration information on repeated transmission of message 3 from the base station. Another example is that when the UE determines that the condition for selecting the SUL carrier is met, the UE performs uplink transmission based on the SUL carrier, and after the base station receives the uplink transmission through the SUL carrier, the UE receives the configuration information related to repetition transmission transmitted by the base station.

[0280] In an implementation, when the first condition is met for the first number of times, the UE determines that repetition transmission is needed, and the first number of times is 1 or an integer greater than 1. For example, when the counter that counts the number of times the condition is met reaches (is equal to or greater than) the third threshold, the UE determines that repetition transmission is needed. In an implementation, the third threshold is 1, that is, as long as the above-mentioned first condition is met, the UE determines that repetition transmission is needed. In an implementation, the third threshold is an integer greater than 1, for example, 3, that is, after the first condition mentioned above needs to be met for a certain number of times (for example, at least the number of times of the third threshold), for example, after the first condition is met for three times, the UE can determine that repetition transmission is needed.

[0281] In an implementation, the counter counts that a first condition is continuously met; in another implementation, the counter counts cases where the first condition is met, regardless of whether the first condition is met continuously.

[0282] In an implementation, the third threshold may be obtained through configuration information from other node (such as network device) (for example, the above configuration information related to repetition transmission), or preset.

[0283] According to the embodiment of the present disclosure, when the UE determines that the first condition is met, it may request the base station for repetition transmission, for example, by transmitting a request for repetition transmission, or implicitly indicating to the base station that the UE needs repetition transmission by performing transmission to the base station using resources dedicated to repetition transmission configured by the base station. In addition, in some embodiments, the base station can judge that the UE needs repetition transmission according to some behaviors of the UE without the UE actively requesting repetition transmission from the base station, so as to transmit related configuration to the UE. For example, the base station can transmit configuration information for repetition transmission to the UE according to the UE meeting certain conditions (for example, refer to the above-mentioned "other function meets the trigger condition of the other function").

[0284] More detailed description will be made as below.

[0285] ●Request for repetition transmission

[0286] According to at least one embodiment of the present disclosure, when the UE determines that repetition transmission is needed, it requests the network device (or other nodes) for repetition transmission.

[0287] In some implementations, the way for the UE to request repetition transmission includes one or a combination of the following ways:

[0288] ■The □ UE requests repetition transmission by transmitting a specific random access message 1 or message A. For example, the UE transmits a request for repetition transmission through random access message 1 or message A, which includes one or a combination of the following steps:

[0289] ◆ □ UE receives the indication of message 1 resource dedicated for requesting repetition transmission (including a preamble or a group of preambles; and / or a random access occasion RO, or a group of random access occasions, that is / are dedicated) which is configured by other nodes (such as network device), wherein,

[0290] ▷ The dedicated preamble may include a preamble index;

[0291] ▷ The group of preambles that are dedicated can include a start preamble index and the number of preambles included in the group of preambles;

[0292] ▷ The dedicated random access occasion RO may include an RO index,

[0293] ▷ The group of random access occasions that are dedicated may include a start RO index and the number of ROs in the group of random access occasions;

[0294] - The preamble index may be an index value after the preambles in a time-frequency resource are logically numbered in a certain order (for example, in a sequential manner); the time-frequency resource can be a RO or a combination of multiple ROs;

[0295] - The RO index can be an index value after ROs in one time span are logically numbered in a certain order (for example, frequency domain first and then time domain); this one time span can be the association period or the association pattern period of SSB-RO, etc.

[0296] ▷ The message 1 resource dedicated to the content of the request for repetition transmission may also be for a single downlink reference signal associated with the random access message 1 resource or each downlink reference signal associated with the random access message 1 resource. For example, if there is one downlink reference signal, the indication of message 1 resource dedicated to the request for repetition transmission is applied to the message 1 resource associated with the downlink reference signal; for example, there are X (an integer with X > 1) downlink signals, then the above indication of message 1 resource dedicated to the content of the request for repetition transmission is applied to the message 1 resources associated with each or a certain or several of the X downlink reference signals; when the resource indication is applied to the certain one or several downlink reference signals, the UE receives the corresponding one or several specific downlink reference signal indexes configured by other nodes (such as network device), and the message 1 resources corresponding to the configured one or several downlink reference signals are used by the UE to request repetition transmission; the indication of message 1 resource can be replaced by a PRACH resource indication in message A; the RO corresponds to the size of time-frequency resource carrying a random access preamble format;

[0297] ◆ UE receives the indication of PUSCH resource in message A dedicated for requesting repetition transmission (including a DMRS resource, or a group of DMRS resources, and / or a PUSCH occasion (PO) of message A or a group of PUSCH occasions of message A, that is / are dedicated) configured by other node (such as network device); wherein,

[0298] ▷ The dedicated DMRS resource may include a DMRS resource index; or include a DMRS sequence index and / or a DMRS port index;

[0299] ▷ The group of DMRS resources that are dedicated can include a start DMRS resource index and the number of DMRS resources included in the group of DMRS resources;

[0300] ▷ The dedicated PUSCH occasion PO of message A may include the PUSCH occasion PO index of message A,

[0301] ▷ The group of PUSCH occasions POs of messages A that are dedicated may include a start PUSCH occasion PO index of message A and the number of PUSCH occasions POs of message A in the group of PUSCH occasions POs of message A;

[0302] - The DMRS resource index can be the index value of DMRS resources in a time-frequency resource after being logically numbered in a certain order (for example, in a sequential manner); the time-frequency resource may be a PO or a combination of multiple POs;

[0303] - The PO index can be an index value after the POs in one time span is logically numbered in a certain order (for example, frequency domain first and then time domain); this one time span can be the association period or the association pattern period of SSB-RO, etc. ROs in the association of SSB-RO are the ROs in association with PUSCH in message A;

[0304] ◆ The UE performs transmission of the corresponding message 1, or message A PRACH and / or message A PUSCH according to the received message 1 resources dedicated to requesting repetition transmission, or PRACH resources and / or PUSCH resources dedicated to requesting repetition transmission;

[0305] ■ The UE requests repetition transmission through the transmission of message 3, including at least one of the following:

[0306] ◆Explicit request transmission, for example, carrying the content of request for repetition transmission in the PUSCH content of message 3, and in an implementation, carrying the content of request for repetition transmission through a specific UCI in the PUSCH of message 3;

[0307] ◆Implicit request transmission, for example, requesting repetition transmission through resource selected according to indication of PUSCH resource of message 3, includes:

[0308] ▷ □ UE receives the indication of PUSCH resource of message 3 dedicated to requesting repetition transmission (including a DMRS resource, or a group of DMRS resources, and / or a PUSCH occasion PO of message 3, or a group of PUSCH occasions of message 3, that is / are dedicated) configured by other node (such as network device); wherein,

[0309] - The dedicated DMRS resource may include a DMRS resource index; or a DMRS sequence index and / or a DMRS port index;

[0310] - The group of DMRS resources that are dedicated may include a start DMRS resource index and the number of DMRS resources included in the group of DMRS resources;

[0311] - The dedicated PUSCH occasion PO of message 3 may include a PUSCH occasion PO index of message 3,

[0312] - The group of PUSCH occasions of message 3 that are dedicated may include a start PUSCH occasion PO index of message 3 and the number of PUSCH occasions POs of message A of the group of PUSCH occasions POs of message A;

[0313] √ The DMRS resource index may be an index value after DMRS resources in a time-frequency resource are logically numbered in a certain order (for example, in a sequential manner); the time-frequency resource may be a PO of message 3, or a combination of multiple POs of message 3;

[0314] √ The PO index of message 3 may be an index value after the POs of message 3 in a time span is logically numbered in a certain order (for example, frequency domain first and then time domain); the time span is the time span occupied by the number of POs of message 3 configured by the network device;

[0315] ▷ □ UE performs the transmission of corresponding PUSCH of message 3 according to the received indication of PUSCH resource of message 3 dedicated to requesting repetition transmission;

[0316] ■The UE requests repetition transmission according to the configured uplink control information or channel dedicated to requesting repetition transmission, including at least one of the following:

[0317] ◆The UE receives a separate PUCCH resource configuration dedicated for requesting repetition transmission; the resource configuration includes, for example, the format of PUCCH, sequence index (for example, but not limited to, PUCCH sequence index, PRACH sequence index, or other sequence indexes related to resource configuration), and / or time-frequency resource configuration, etc.; the UE performs corresponding PUCCH transmission according to the received PUCCH resource configuration dedicated to requesting repetition transmission, such as transmitting a request for repetition transmission;

[0318] ◆The UE receives a PUCCH resource configuration dedicated for requesting repetition transmission for feeding back acknowledgement information (such as ACK) for message 4. For example, when the UE needs to request repetition transmission, the dedicated PUCCH resource configuration is applied in a feedback channel (such as ACK PUCCH) for message 4, and the PUCCH resource configuration includes one or more of:

[0319] ▷ The spreading code configuration superimposed on the normal ACK PUCCH for message 4, or the configuration of other cover code;

[0320] ▷ The CS (cyclic shift) index or offset of the CS value on the normal sequence of ACK PUCCH for message 4;

[0321] ▷ The configuration of superimposing a specific phase shift on the signal of the normal ACK PUCCH for message 4 in frequency domain;

[0322] ▷ Configuration of specific DMRS resources in the time domain of normal ACK PUCCH for message 4;

[0323] Here, the normal ACK PUCH for message 4 refers to the ACK PUCH for message 4 that is not used to request repetition transmission.

[0324] In an implementation, the content of the request for repetition transmission may include one or more of:

[0325] ◆ Indicating information on requiring repetition transmission, for example, the content is used to request to other node (for example, network device) that repetition transmission is required; in an implementation, the requiring repetition transmission may also be replaced by indicating whether repetition transmission is required;

[0326] ◆ The number of repetitions expected by the UE, for example, this content is used to request the number of repetitions expected by the UE in an uplink signal transmission to other node (for example, network device);

[0327] ◆ Information of the time span of repetition transmission expected by the UE; for example, the content is used to request to other node (e.g., network device) for the overall time span that the UE may perform repeated transmission of a uplink signal. In an implementation, the information of the time span may include one or more of:

[0328] ▷ Information of a time window, including the start and / or the length of the time window (how many time units, that is, the number of time units), or the end of the time window; in an implementation, the information of the time window may also include the period size of the time window;

[0329] ▷ The maximum number of PUSCHs with repetition transmission; for example, the number is 4, and the number of repetition transmissions is 8, indicating that there may be four PUSCHs for repetition transmission, and each PUSCH transmission may have 8 repetitions; this number is only an example and may be extended and replaced with other numbers;

[0330] ▷ Information of the start of a time unit

[0331] ▷ Information of the length of time units (integer number of time units).

[0332] In addition, as mentioned above, in an implementation, there is no need for the UE to actively request repetition transmission, and the base station may transmit configuration information related to repetition transmission to the UE when the UE meets certain conditions (for example, referring to the above-mentioned "other function meets the trigger condition of the other function").

[0333] With continued reference to FIG. 5, the receiving first configuration information related to repetition transmission by the UE from the base station in step 502 will be described in more detail below.

[0334] ●reception of configuration of repetition transmission

[0335] According to at least one embodiment of the present disclosure, a UE may receive feedback from a network device on a request for repetition transmission, and the feedback includes first configuration information related to repetition transmission.

[0336] In an implementation, the first configuration information may include one or more of:

[0337] ◆ indication information on whether to approve or enable repetition transmission;

[0338] ◆ indication information on whether to approve or enable an expected number of repetitions requested by the UE; or directly configure the number of repetitions that the UE may perform;

[0339] ◆ indication information on whether to agree or enable the expected time span for repetition transmission requested by the UE; or directly configure the time span for repetition transmission that the UE may perform, and for the specific content that the time span for repetition transmission may include, the above description may be referred to, which is not repeated here.

[0340] ◆ Other configuration information used for PUSCH transmission, for example MCS and RV (which may be the initial RV index or the RV index used for each repetition); time-frequency resource configuration, DMRS resource configuration, etc.

[0341] ◆ The resource configuration information associated with whether the subsequent uplink transmission requires repetition transmission, for example, including the first UL resource configuration information and / or the second UL resource configuration information, wherein the first UL resource configuration information corresponds to that repetition transmission is not required for the subsequent UL transmission, and the second UL resource configuration information corresponds to that repetition transmission is required for the subsequent UL transmission. For example, the UL transmission is a PUSCH transmission, and the configuration information of the first and second UL resources includes first PUSCH resource configuration information and second PUSCH resource configuration information. That is, the configuration information of PUSCH transmission includes: configuration information for subsequent PUSCH requiring repetition transmission and / or configuration information for subsequent PUSCH not requiring repetition transmission; taking the configuration information as DMRS as an example, the resource configuration information associated with whether the subsequent uplink transmission requiring repetition transmission includes the DMRS resource configuration for subsequent PUSCH requiring repetition transmission (for example, DMRS resource 1) and / or the DMRS configuration for subsequent PUSCH not requiring repetition transmission (for example, DMRS resource 2). When the UE requires the subsequent PUSCH with repetition transmission, the UE uses DMRS resource 1 in the current repetition transmission of PUSCH; if the UE requires the subsequent PUSCH without repetition transmission, the UE uses DMRS resource 2 in the current repetition transmission of PUSCH. Thus, when the network device detects that the UE uses DMRS resource 1, it knows that the UE requires repetition transmission for the subsequent PUSCH, and if the network device detects DMRS resource 2, it knows that the UE does not require repetition transmission for the subsequent PUSCH. The DMRS resource configuration may be replaced with other configuration information for PUSCH transmission;

[0342] In an implementation, the way for the UE to receive the feedback content by the network device for the request for repetition transmission may include one or more of:

[0343] ◆ through message 2 of random access (including the PDCCH and / or PDSCH of message 2, such as RAR);

[0344] ◆ through message B of two-step random access (including the PDCCH and / or PDSCH of message B, such as RAR);

[0345] ◆ through message 4 of random access (including the PDCCH and / or PDSCH of message 4, for example, the contention resolution message);

[0346] ◆ through dedicated and specific control information or signaling, such as control information or signaling specific to repetition transmission, or control information or signaling specific to a user equipment type (such as low-cost user equipment (such as Tag), etc.);

[0347] ◆ using all or part of bits in the existing bit field to signal; for example, the existing bit fields in DCI, such as MCS bit field, DAI bit field; NDI bit field, etc.

[0348] ◆ using reserved bits to signal; e.g., unused reserved bits in the PDCCH of the message 2 of random access.

[0349] With continued reference to FIG. 5, the repetition transmission performed by the UE based on the received first configuration information in step 503 will be described in more detail below.

[0350] ●Performing repetition transmission

[0351] In an implementation, the UE performs a specific operation of PUSCH transmission, comprising:

[0352] ■The UE performs PUSCH transmission (e.g., repetition transmission) according to the aforementioned feedback content for the request for repetition transmission by the network device (including the first configuration information) and / or the received second configuration information related to repetition transmission transmitted by other node (e.g., network device).

[0353] According to the embodiment of the present disclosure, it also relates to aspects related to the termination of repetition transmission after repetition transmission by the UE. It will be described in detail below.

[0354] ●Termination of repetition transmission

[0355] In an implementation, the method of the embodiment of the present disclosure further includes the operation that the UE determines to terminate the repetition transmission. For example, the way that the UE determines to terminate the repetition transmission may include a combination of one or more of the following ways;

[0356] ■ After the repetition transmission of the current PUSCH is performed, the repetition transmission is terminated. For example, the operation of repetition transmission is one time, and the configuration information and the like for repetition transmission is only applied to the current PUSCH transmission, and subsequent PUSCH transmissions will return to the normal PUSCH transmission mode by default, thus the repetition transmission is terminated; for example, when the UE receives the information related to repetition transmission transmitted by the base station in response to the request for repetition transmission, the UE only applies the information related to repetition transmission to the current PUSCH, so as to perform repetition transmission for the current PUSCH according to the received information related to repetition transmission, and the subsequent PUSCH does not adopt the repetition transmission mode by default unless the UE requests repetition transmission again;

[0357] ■ Repetition transmission of PUSCH is performed within the time span for repetition transmission (determined according to the feedback from the base station), and when the time span for repetition transmission ends, repetition transmission is terminated, and subsequent PUSCH transmission returns to the normal PUSCH transmission mode by default; in an implementation, the time span for repetition transmission ends, including exceeding the range of a time window, the number of PUSCHs transmitted with repetition reaches or exceeds the configured or expected maximum number of PUSCHs with repetition transmission.

[0358] ◆In an implementation, if at least one repetition transmission for a PUSCH has not yet reached the corresponding the repetition transmission number at the end of the time span for repetition transmission, then:

[0359] ▷ UE abandons or does not transmit the repetition transmission of PUSCH beyond the time span; for example, the number of repetition transmissions for a PUSCH is 4 times, when the time window ends, the current PUSCH repetition transmission is only 2 times, and the remaining 2 PUSCH repetition transmissions are abandoned. This method is suitable for strict time control; as shown in (a) of FIG. 6. In an implementation, this method may be extended to a situation where the repetition transmission for a PUSCH starts before the time span starts, as shown in (b) of FIG. 6, or

[0360] ▷ UE completes all repetition transmissions for the current PUSCH, and then terminates the repetition transmissions for the subsequent PUSCH. For example, the number of repetition transmissions for a PUSCH is 4, and when the time window ends, there are only 2 performed repetition transmissions for the current PUSCH, then the remaining 2 repetition transmissions of the PUSCH will continue being transmitted; however, after all the repetition transmissions of the current PUSCH are completed, the repetition transmissions of PUSCH are terminated; this way is beneficial for the UE to transmit the uplink data as reliably as possible; as shown in (a) of FIG. 7; in an implementation, this method may be extended to a situation where the repetition transmission for a PUSCH starts before the start of the time span for repetition transmission, as shown in (b) of FIG. 7.

[0361] ■ The repetition transmission is terminated after receiving the instruction to terminate the repetition transmission transmitted by the network device. In an implementation, the UE may receive the indication information on termination of repetition transmission through dedicated MAC CE information or DCI information, for example. For example, the MAC CE information or DCI information may be specific to repetition transmission or specific to UE type, for example, repetition transmission specific or UE type specific.

[0362] In addition, in an implementation, the above situation (for example, the situation described in FIGs. 6 and 7) may also be applied to the situation where the resource for repetition transmission for one PUSCH overlap or conflict with the start and / or end of the time span for repetition transmission.

[0363] FIG. 8 shows a schematic structural diagram of a user equipment 800 according to at least one embodiment of the present disclosure. Referring to FIG. 8, the user equipment 800 includes a transceiver 801 and a controller 802. The transceiver 801 is configured to transmit data or signals and receive data or signals. The controller 802 is coupled with the transceiver 801 and configured to perform control so that the user equipment 800 performs the method according to the embodiment of the present disclosure. In an implementation, the user equipment 800 may further include a memory (not shown) on which computer-executable instructions are stored. When the instructions are performed by the controller 802, the user equipment 800 may perform at least one method corresponding to the above-mentioned embodiments of the present disclosure.

[0364] FIG. 9 shows a structural diagram of a network device (e.g., a base station) 900 according to at least one embodiment of the present disclosure. Referring to FIG. 9, the network device 900 includes a transceiver 901 and a controller 902. The transceiver 901 is configured to transmit data or signals and receive data or signals. The controller 902 is coupled with the transceiver 901 and configured to perform control so that the network device 900 performs the method according to the embodiment of the present disclosure. In an implementation, the network device 900 may further include a memory (not shown) on which computer-executable instructions are stored. When the instructions are performed by the controller 902, the network device 900 may perform at least one method corresponding to the above embodiments of the present disclosure.

[0365] The above is only the preferred embodiment of the invention, and it is not used to limit the invention. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the invention should be included in the scope of protection of the invention.

[0366] Those skill in that art will understand that the present invention includes apparatus for perform one or more of the operations described in this application. These devices may be specially designed and manufactured for required purposes, or they can also include known devices in general-purpose computers. These devices have computer programs stored therein, which are selectively activated or reconfigured. Such a computer program may be stored in a device (e.g., a computer) readable medium 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, 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 in which information is stored or transmitted by a device (e.g., a computer) in a readable form.

[0367] It will 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. It can be understood by those skilled in the art that these computer program instructions can be provided to a general-purpose computer, a professional computer or a processor of other programmable data processing methods for implementation, so that the solution specified in the block or blocks of the structure diagram and / or block diagram and / or flow diagram disclosed in the present invention can be performed by the processor of the computer or other programmable data processing methods.

[0368] Those skilled in the art can understand that the steps, measures and schemes in various operations, methods and processes discussed in the present invention can be alternated, modified, combined or deleted. Further, other steps, measures and schemes in the various operations, methods and processes already discussed in the present invention can also be alternated, changed, rearranged, decomposed, combined or deleted. Further, steps, measures and schemes in various operations, methods and flows disclosed in the present invention in the prior art can also be alternated, changed, rearranged, decomposed, combined or deleted.

[0369] What has been described above is only part of the implementation of the present invention. It should be pointed out that for those skilled in the art, several improvements and embellishments can be made without departing from the principles of the present invention, and these improvements and embellishments should also be regarded as the protection scope of the present invention.

Claims

1.A method performed by user equipment (UE) in a communication system, comprising:determining whether a first condition related to repetition transmission is met;receiving first configuration information related to repetition transmission from a base station when the first condition is met;performing repetition transmission based on the first configuration information.2.The method according to claim 1, wherein the first condition comprises at least one of:a measurement value of a downlink reference signal is not greater than a first threshold;a payload size to be transmitted is not less than a second threshold;UE determines that it needs to request repeated transmission of random access message 3;UE selects a supplementary uplink (SUL) carrier;UE determines to perform repeated transmission of random access;UE selects random access type 1;UE selects random access type 1 or random access type 2 in small data transmission.3.The method according to claim 2, wherein, when it is determined that the first condition is met, the UE requests repetition transmission from the base station,wherein, the requesting repetition transmission from the base station includes transmitting a request for repetition transmission to the base station or transmitting a signal to the base station using a first resource associated with requesting repetition transmission.4.The method according to claim 3, wherein the request for repetition transmission is transmitted through random access message 3 or through a second resource for transmitting the request for repetition transmission, and the second resource is determined based on at least one of the following information configured by the base station: PUCCH format, sequence index and time-frequency resource configuration.5.The method according to claim 2, wherein the first threshold or the second threshold is obtained based on at least one of: information related to a threshold configured by the base station for repetition transmission, and an already configured threshold of the UE.6.The method according to claim 3, wherein when a number of times that the first condition is met reaches a third threshold, the UE requests repetition transmission from the base station, wherein the third threshold is configured by the base station for repetition transmission or is obtained based on an already configured threshold of the UE.7.The method according to any one of claims 3-6, wherein the request for repetition transmission comprises at least one of:request information on a repetition transmission;information related to an expected number of repetition transmissions;information related to an expected time duration for repetition transmission.8.The method according to claim 7, wherein the information related to an expected time duration for repetition transmission includes at least one of:information of a time window;a start of time units of the time duration;a number of time units of the time duration;a maximum number of PUSCHs with repetition transmission.9.The method according to claim 3, further comprising receiving second configuration information related to repetition transmission from the base station,wherein the second configuration information is used by the UE to determine whether to request repetition transmission, and the second configuration information includes at least one of:indication information of whether repetition transmission is supported or enabled;information related to a repetition transmission number or a set of repetition transmission numbers supported or enabled;threshold information related to trigger of repetition transmission;resource configuration information related to requesting repetition transmission.10.The method according to claim 9, wherein the first resource is determined based on the resource configuration information related to requesting repetition transmission,wherein, transmitting a signal to the base station using the first resource includes transmitting a random access message to the base station using the first resource or transmitting a response to a random access message from the base station using the first resource.11.The method according to claim 9, wherein the second configuration information is received through at least one of the following ways:PDCCH scheduling PDSCH carrying system information;in system information or broadcast information;message 2 of random access;message B of two-step random access;message 4 of random access;control information or signaling specific to repetition transmission;control information or signaling specific to user equipment type;using existing bit field;using reserved bits.12.The method according to claim 9, wherein the resource configuration information related to requesting repetition transmission includes indication information of the first resource,the indication information of the first resource includes at least one of:information indicating a preamble or a set of preambles related to requesting repetition transmission,information indicating a random access occasion RO or a set of ROs related to requesting repetition transmission,information indicating a demodulation reference signal DMRS resource or a set of DMRS resources related to requesting repetition transmission,information indicating physical uplink shared channel PUSCH occasion PO or a set of POs related to requesting repetition transmission,information indicating spreading code related to requesting repetition transmission;information indicating a cyclic shift CS index or offset related to requesting repetition transmission;information indicating a phase rotation related to requesting repetition transmission;indication information of a downlink reference signal, the downlink reference signal is associated with at least one of a preamble, an RO, a DMRS resource and a PO.13.A method performed by a base station in a communication system, comprising:transmitting first configuration information related to repetition transmission to user equipment UE based on whether a first condition related to repetition transmission is met;receiving repetition transmissions based on the first configuration information from the UE.14.A user equipment (UE), comprising:a transceiver configured to transmit and / or receive signals;a controller configured to control the UE to perform the method according to any one of claims 1 to 12.15.A base station, comprising:A transceiver configured to transmit and / or receive signals;A controller configured to control the base station to perform the method according to claim 13.

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