RV-related method used in node for wireless communication, and apparatus

Abstract

The present application discloses an RV-related method used in a node for wireless communication, and an apparatus. Provided is a first node for wireless communication, comprising: a first transmitter for sending first information on a first channel, wherein the first channel is an uplink channel, and the first information indicates at least one RV number for downlink transmission.

Description

Method and apparatus related to RV in a node for wireless communication TECHNICAL FIELD

[0001] The present application relates to a transmission method and apparatus in a wireless communication system, in particular to a transmission method and apparatus of a wireless signal in a wireless communication system supporting a cellular network. BACKGROUND

[0002] With the continuous progress and deepening application of technology, including but not limited to AI (Artificial Intelligence) / ML (Machine Learning) technology, the ability of the network side to process and utilize information will be increasingly enhanced. In order to fully utilize the capabilities of the network side to optimize system scheduling, more effective information needs to be provided for the network side to make decisions. SUMMARY

[0003] Using RV (Redundancy Version) to realize soft combining is an important technology in wireless communication; how to fully utilize RV information to enhance scheduling is a problem worth studying. In view of the above problem, the present application discloses a solution. The solution disclosed in the present application is applicable to scenarios applying AI / ML, and is also applicable to scenarios other than applying AI / ML. In addition, using a unified solution in different scenarios helps to reduce hardware complexity and cost. In the case of no conflict, the embodiments in the first node and the features in the embodiments of the present application can be applied to the second node, and vice versa. In the case of no conflict, the embodiments of the present application and the features in the embodiments can be arbitrarily combined with each other.

[0004] As an embodiment, the explanation of the terms in the present application is based on the definition of the specification agreement TS38 series of 3GPP.

[0005] As an embodiment, the explanation of the terms in the present application is based on the definition of the specification agreement TS28 series of 3GPP.

[0006] The present application discloses a method used in a first node for wireless communication, characterized in that it comprises:

[0007] sending first information on a first channel, the first channel being an uplink channel;

[0008] wherein the first information indicates at least one RV number for a downlink transmission.

[0009] As an embodiment, the problem to be solved by the present application includes: how to improve the performance of the downlink transmission.

[0010] As an embodiment, the above method allows the UE to recommend a suitable RV number to the network side (according to its own situation); the network side can use the reported RV number information (and other information obtained) to make a comprehensive decision to determine the scheduling information of the downlink transmission, thereby improving the performance of the downlink transmission.

[0011] As an embodiment, the above method has significant advantages in a system with diversified decoders of UEs; through the above method, the base station can perform differentiated scheduling according to the RV numbers reported by different UEs, so that the scheduling is more suitable for the decoder of each UE, thereby improving the decoding performance.

[0012] According to an aspect of the present application, the above method is characterized in that,

[0013] The first information indicates a first RV sequence, and the first RV sequence includes a plurality of RV numbers, all of which are RV numbers for the downlink transmission.

[0014] As an embodiment, the above method allows the UE to recommend a suitable RV sequence to the base station, which is conducive to reducing the required number of transmissions and improving the corresponding transmission efficiency in the case of needing to transmit a bit block multiple times.

[0015] According to an aspect of the present application, the above method is characterized in that,

[0016] The downlink transmission is any first type of transmission, and the first type of transmission is a dynamically scheduled transmission.

[0017] As an embodiment, in combination with the above features, the scheme disclosed by the present application includes the following characteristics: the RV number indicated by the first information is not only for a certain specific dynamically scheduled downlink transmission, but can be used to determine a plurality of dynamically scheduled downlink transmissions; under such characteristics, the scheme disclosed by the present application can improve the reception performance of the dynamically scheduled downlink transmission with very little uplink signaling overhead.

[0018] According to an aspect of the present application, the above method is characterized in that,

[0019] The downlink transmission is any transmission of a plurality of dynamically scheduled transmissions, and any two transmissions of the plurality of dynamically scheduled transmissions are transmissions on different downlink channels.

[0020] As an embodiment, in combination with the above features, the scheme disclosed by the present application comprises the following characteristics: the RV number indicated by the first information is not only for a certain dynamically scheduled downlink transmission, but can be used to determine multiple dynamically scheduled downlink transmissions; under such characteristics, the scheme disclosed by the present application can improve the reception performance of the dynamically scheduled downlink transmission with little uplink signaling overhead.

[0021] According to an aspect of the present application, the above method is characterized in that,

[0022] The sending of the first information depends on the number of retransmissions of at least one transport block.

[0023] According to an aspect of the present application, the above method is characterized in that,

[0024] The first information is sent only when the number of transport blocks retransmitted at least K times within a first time window is greater than N;

[0025] Wherein, the first time window is configurable, and the K and the N are positive integers.

[0026] According to an aspect of the present application, the above method is characterized in that,

[0027] The at least one RV number for the downlink transmission indicated by the first information is for a first ID, and the first ID identifies at least one ML model.

[0028] As an embodiment, the benefits of the above method include: facilitating the improvement of AI / ML functions.

[0029] According to an aspect of the present application, the above method is characterized in that, comprising:

[0030] Receiving first signaling and a first bit block;

[0031] Wherein, whether the RV indicated by the first information is used for the transmission of the first bit block depends on the first signaling.

[0032] As an embodiment, the benefits of the above method include: high scheduling flexibility.

[0033] The present application discloses a method used in a second node for wireless communication, characterized in that, comprising:

[0034] Receiving first information on a first channel, the first channel being an uplink channel;

[0035] Wherein, the first information indicates at least one RV number for a downlink transmission.

[0036] According to an aspect of the present application, the above method is characterized in that,

[0037] The first information indicates a first RV sequence, the first RV sequence including a plurality of RV numbers, the RV numbers in the first RV sequence all being RV numbers for the downlink transmission.

[0038] According to an aspect of the present application, the above method is characterized in that,

[0039] The downlink transmission is any first type of transmission, the first type of transmission being a dynamically scheduled transmission.

[0040] According to an aspect of the present application, the above method is characterized in that,

[0041] The downlink transmission is any of a plurality of dynamically scheduled transmissions, any two of the plurality of dynamically scheduled transmissions being transmissions on different downlink channels.

[0042] According to an aspect of the present application, the above method is characterized in that,

[0043] The sending of the first information depends on a number of retransmissions of at least one transport block.

[0044] According to an aspect of the present application, the above method is characterized in that,

[0045] The first information is sent only when a number of transport blocks retransmitted at least K times within a first time window is greater than N;

[0046] wherein the first time window is configurable, and the K and the N are positive integers.

[0047] As an embodiment, the second node sends one transport block, and the first node receives the transport block.

[0048] According to an aspect of the present application, the above method is characterized in that,

[0049] The at least one RV number for the downlink transmission indicated by the first information is for a first ID, the first ID identifying at least one ML model.

[0050] According to an aspect of the present application, the above method is characterized in that, comprising:

[0051] Sending first signaling and a first bit block;

[0052] wherein whether the RV indicated by the first information is used for transmission of the first bit block depends on the first signaling.

[0053] The present application discloses a first node used for wireless communication, characterized in that, comprising:

[0054] a first transmitter configured to transmit first information on a first channel, the first channel being an uplink channel;

[0055] wherein the first information indicates at least one RV number for a downlink transmission.

[0056] A second node for wireless communication is disclosed, comprising:

[0057] a second receiver configured to receive first information on a first channel, the first channel being an uplink channel;

[0058] wherein the first information indicates at least one RV number for a downlink transmission. BRIEF DESCRIPTION OF DRAWINGS

[0059] Other features, objects, and advantages of the application will become more apparent from the following detailed description when read in connection with the following accompanying drawings:

[0060] FIG. 1 illustrates a process flow diagram of a first node according to one embodiment of the present application;

[0061] FIG. 2 illustrates a schematic diagram of a network architecture according to one embodiment of the present application;

[0062] FIG. 3 illustrates a schematic diagram of a radio protocol architecture for the user and control planes according to one embodiment of the present application;

[0063] FIG. 4 illustrates a schematic diagram of a first communication device and a second communication device according to one embodiment of the present application;

[0064] FIG. 5 illustrates a signal transmission flow diagram according to one embodiment of the present application;

[0065] FIG. 6 illustrates an explanatory diagram of a downlink transmission according to one embodiment of the present application;

[0066] FIG. 7 illustrates an explanatory diagram of a first RV sequence according to one embodiment of the present application;

[0067] FIG. 8 illustrates an explanatory diagram of transmission of first information depending on a retransmission number of at least one transport block according to one embodiment of the present application;

[0068] FIG. 9 illustrates an explanatory diagram of transmission of first information depending on a retransmission number of at least one transport block according to one embodiment of the present application;

[0069] FIG. 10 illustrates an explanatory diagram of at least one RV number for a downlink transmission indicated by first information for a first ID according to one embodiment of the present application;

[0070] FIG. 11 shows a schematic diagram of RAN (Radio Access Network) domain AI / ML function deployment according to an embodiment of the present application;

[0071] FIG. 12 shows a schematic diagram of an artificial intelligence or machine learning based processing system according to an embodiment of the present application;

[0072] FIG. 13 shows a flowchart of an artificial intelligence or machine learning based processing according to an embodiment of the present application;

[0073] FIG. 14 shows a structural block diagram of a processing apparatus for use in a first node according to an embodiment of the present application;

[0074] FIG. 15 shows a structural block diagram of a processing apparatus for use in a second node according to an embodiment of the present application. DETAILED DESCRIPTION

[0075] The technical solutions of the present application will be further described in detail below with reference to the accompanying drawings. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other arbitrarily without conflict.

[0076] Embodiment 1

[0077] Embodiment 1 illustrates a processing flowchart of a first node according to an embodiment of the present application, as shown in FIG. 1.

[0078] In embodiment 1, the first node in the present application transmits first information on a first channel in step 101.

[0079] In embodiment 1, the first channel is an uplink channel, and the first information indicates at least one RV number for downlink transmission.

[0080] As an embodiment, the first information includes physical layer signaling.

[0081] As an embodiment, the first information includes higher layer signaling.

[0082] As an embodiment, the first information includes MAC CE (MAC control element(s)).

[0083] As an embodiment, the first information includes RRC layer signaling.

[0084] As an embodiment, the first information is reported by a UE to a base station.

[0085] As an embodiment, the first channel is configurable.

[0086] As an embodiment, the uplink channel is a physical channel.

[0087] As an embodiment, the uplink channel is a transport channel.

[0088] As an embodiment, the downlink transmission is a transmission on a downlink channel.

[0089] As an embodiment, the downlink transmission is a transmission on a physical layer downlink channel.

[0090] As an embodiment, the downlink transmission is for transmission of a transport block.

[0091] As an embodiment, the downlink transmission is a dynamically scheduled transmission.

[0092] As an embodiment, the downlink transmission is any of a plurality of dynamically scheduled transmissions, any two of the plurality of dynamically scheduled transmissions being transmissions on different downlink channels.

[0093] As an embodiment, the at least one RV number for the downlink transmission indicated by the first information is available for generating the downlink transmission.

[0094] As an embodiment, the first information indicates one RV number for the downlink transmission.

[0095] As an embodiment, the downlink transmission is an initial transmission.

[0096] As an embodiment, in combination with the above features, the scheme disclosed by the present application allows the UE to recommend a suitable RV for an initial transmission to the base station for the base station to use or refer to, which is conducive to improving the probability of the initial transmission being correctly received, reducing the retransmission rate, and saving transmission resources.

[0097] As an embodiment, the first node determines the at least one RV number for the downlink transmission indicated by the first information by itself.

[0098] As an embodiment, the first node reports one or more RV numbers to the network side through the first information.

[0099] As an embodiment, one RV number is one of 0, 1, 2, and 3.

[0100] Embodiment 2

[0101] Embodiment 2 illustrates a diagram of a network architecture according to one embodiment of the application, as shown in FIG. 2. FIG. 2 illustrates a network architecture 200 for a 5G NR (New Radio) / LTE (Long-Term Evolution) / LTE-A (Long-Term Evolution Advanced) system. The 5G NR / LTE / LTE-A network architecture 200 can be referred to as a 5GS (5G System) / EPS (Evolved Packet System) 200 or some other suitable terminology. The 5GS / EPS 200 includes a UE (User Equipment) 201, a RAN (Radio Access Network) 202, a 5GC (5G Core Network, 5G Core Network) / EPC (Evolved Packet Core) 210, a HSS (Home Subscriber Server) / UDM (Unified Data Management) 220, and at least one of an Internet service 230. The 5GS / EPS can interconnect with other access networks, but these entities / interfaces are not shown for simplicity. As shown, the 5GS / EPS provides packet-switched services, however, one of skill in the art will readily appreciate that the various concepts presented throughout this application can be extended to networks providing circuit-switched services or other cellular networks. The RAN includes a node 203 and other nodes 204. The node 203 provides user and control plane protocol terminations toward the UE 201. The node 203 can be connected to the other nodes 204 via an Xn interface (e.g., backhaul) / X2 interface. The node 203 can also be referred to as a base station, a base transceiver station, a radio base station, a radio transceiver, a transceiver function, a Basic Service Set (BSS), an Extended Service Set (ESS), a TRP (Transmitter Receiver Point), or some other suitable terminology. The node 203 provides an access point to the 5GC / EPC 210 for a UE 201.Examples of UE 201 include cellular phones, smart phones, Session Initiation Protocol (SIP) phones, laptop computers, Personal Digital Assistants (PDAs), satellite radios, non-terrestrial base station communications, satellite mobile communications, global positioning systems, multimedia devices, video devices, digital audio players (e.g., MP3 players), cameras, game consoles, drones, aerial vehicles, narrowband internet of things devices, machine type communication devices, land vehicles, automobiles, wearable devices, or any other similar functional device. Those skilled in the art will also recognize that UE 201 can be referred to as a mobile station, a subscriber station, a mobile unit, a subscriber unit, a wireless unit, a remote unit, a mobile device, a wireless device, a wireless communication device, a remote device, a mobile subscriber station, an access terminal, a mobile terminal, a wireless terminal, a remote terminal, a handset, a user agent, a mobile client, a client, or some other suitable terminology. Node 203 is connected to 5GC / EPC 210 over an S1 / NG interface. 5GC / EPC 210 includes MME (Mobility Management Entity) / AMF (Authentication Management Field) / SMF (Session Management Function) 211, other MME / AMF / SMF 214, S-GW (Service Gateway) / UPF (User Plane Function) 212, and P-GW (Packet Data Network Gateway) / UPF 213. MME / AMF / SMF 211 is the control node that processes the signaling between UE 201 and 5GC / EPC 210. Generally, MME / AMF / SMF 211 provides bearer and connection management. All user IP (Internet Protocal) packets are transferred through S-GW / UPF 212, which itself connects to P-GW / UPF 213. The P-GW provides UE IP address allocation as well as other functions. P-GW / UPF 213 connects to Internet services 230. Internet services 230 include operator corresponding Internet protocol services, which can include the Internet, an intranet, IMS (IP Multimedia Subsystem), and packet switching services, among others.

[0102] As one embodiment, the UE 201 corresponds to the first node in the present application.

[0103] As one embodiment, the gNB 203 corresponds to the second node in the present application.

[0104] As one embodiment, the wireless link between the UE 201 and the node 203 comprises a cellular network link.

[0105] As one embodiment, the gNB 203 is a Macro Cellular base station.

[0106] As one embodiment, the gNB 203 is a Micro Cell base station.

[0107] As one embodiment, the gNB 203 is a Pico Cell base station.

[0108] As one embodiment, the gNB 203 is a Femto Cell base station.

[0109] As one embodiment, the gNB 203 is a base station device supporting large latency difference.

[0110] As one embodiment, the gNB 203 is a flying platform device.

[0111] As one embodiment, the gNB 203 is a satellite device.

[0112] Embodiment 3

[0113] Figure 3 is a schematic diagram illustrating an embodiment of a radio protocol architecture for a user plane 350 and a control plane 300, Figure 3 shows the radio protocol architecture for the control plane 300 between a first communication node device (UE, gNB or RSU (Road Side Unit) in V2X (Vehicle to Everything), a vehicle mounted device or a vehicle mounted communication module) and a second communication node device (gNB, UE or RSU in V2X, a vehicle mounted device or a vehicle mounted communication module), or between two UEs, in three layers: Layer 1 (L1), Layer 2 (L2) and Layer 3 (L3). L1 is the lowest layer and implements various PHY (Physical layer) signal processing functions. L1 will be referred to as the PHY 301 herein. Layer 2 (L2 layer) 305 is above the PHY 301 and is responsible for the link between the first communication node device and the second communication node device and between two UEs over the PHY 301. The L2 305 includes a MAC (Medium Access Control) sublayer 302, a RLC (Radio Link Control) sublayer 303 and a PDCP (Packet Data Convergence Protocol) sublayer 304, which are terminated at the second communication node device. The PDCP sublayer 304 provides multiplexing between different radio bearers and logical channels. The PDCP sublayer 304 also provides security functions, such as ciphering of data packets, and provides header compression to reduce the amount of data being transmitted over the radio interface. The RLC sublayer 303 provides segmentation and reassembly of upper layer data packets, retransmission of lost data packets, and reordering of data packets to compensate for out-of-order reception due to HARQ. The MAC sublayer 302 provides multiplexing between logical and transport channels. The MAC sublayer 302 is also responsible for allocating the various radio resources (e.g., resource blocks) in one cell to theThe radio protocol architecture for the user plane 350 comprises Layer 1 (L1) and Layer 2 (L2) and is substantially the same as the corresponding layers and sublayers in the control plane 300 for the first communication node device and the second communication node device, except for the PDCP sublayer 354 in the L2 layer 355 in the user plane 350, which also provides header compression for upper layer data packets to reduce radio transmission overhead. Also included in the L2 layer 355 in the user plane 350 is the SDAP (Service Data Adaptation Protocol) sublayer 356, which is responsible for mapping between QoS (Quality of Service) flows and data radio bearers (DRBs) to support diverse traffic types. Although not shown, the first communication node device can have several upper layers above the L2 layer 355, including a network layer (e.g., IP (Internet Protocol) layer) that terminates at the P-GW on the network side and an application layer that terminates at the other end of the connection (e.g., a remote UE, a server, etc.).

[0114] As one embodiment, the wireless protocol architecture in FIG. 3 is applicable to the first node in the present application.

[0115] As one embodiment, the wireless protocol architecture in FIG. 3 is applicable to the second node in the present application.

[0116] As one embodiment, the first information in the present application is generated at the PHY 301.

[0117] As one embodiment, the first information in the present application is generated at the MAC sublayer 302.

[0118] As one embodiment, the first information in the present application is generated at the RRC sublayer 306.

[0119] As one embodiment, the first signaling in the present application is generated at the PHY 301.

[0120] As one embodiment, the first channel in the present application is generated at the PHY 301 or the PHY 351.

[0121] As one embodiment, the higher layer in the present application refers to a layer above the physical layer.

[0122] Embodiment 4

[0123] Embodiment 4 shows a schematic diagram of a first communication device and a second communication device according to the present application, as shown in Figure 4. Figure 4 is a block diagram of a first communication device 410 and a second communication device 450 communicating with each other in an access network.

[0124] The first communication device 410 comprises a controller / processor 475, a memory 476, a receive processor 470, a transmit processor 416, a multi-antenna receive processor 472, a multi-antenna transmit processor 471, a transmitter / receiver 418 and an antenna 420.

[0125] The second communication device 450 comprises a controller / processor 459, a memory 460, a data source 467, a transmit processor 468, a receive processor 456, a multi-antenna transmit processor 457, a multi-antenna receive processor 458, a transmitter / receiver 454 and an antenna 452.

[0126] In the transmission from the first communication device 410 to the second communication device 450, at the first communication device 410, upper layer packets from the core network are provided to the controller / processor 475. The controller / processor 475 implements functionality of the L2 layer. In the transmission from the first communication device 410 to the second communication device 450, the controller / processor 475 provides header compression, ciphering, packet segmentation and reordering, multiplexing between logical and transport channels, and radio resource allocations for the second communication device 450 based on various priority metrics. The controller / processor 475 is also responsible for retransmission of lost packets, and signaling to the second communication device 450. The transmit processor 416 and the multiple antenna transmit processor 471 implement various signal processing functions for the LI layer (i.e., physical layer). The transmit processor 416 implements coding and interleaving to facilitate forward error correction (FEC) at the second communication device 450, and mapping of coded and interleaved data onto various signal constellations based on various modulation schemes (e.g., binary phase shift keying (BPSK), quadrature phase shift keying (QPSK), M-phase shift keying (M-PSK), M-quadrature amplitude modulation (M-QAM)). The multiple antenna transmit processor 471 performs digital spatial pre-coding of the coded and modulated symbols, including codebook-based and non-codebook-based pre-coding, and beamforming processing, to generate one or more spatial streams. The transmit processor 416 then maps to each spatial stream to the subcarriers, multiplexes with reference signals (e.g., pilot) in the time and / or frequency domain, and then performs an inverse fast Fourier transform (IFFT) to generate a time-domain multicarrier symbol stream for the physical channel. The multiple antenna transmit processor 471 then performs transmit analog pre-coding / beamforming operations on the time-domain multicarrier symbol stream. Each transmitter 418 converts the baseband multicarrier symbol stream provided by the multiple antenna transmit processor 471 into a radio frequency stream, and then provides the radio frequency stream to the corresponding antenna 420.

[0127] In the transmission from the first communication device 410 to the second communication device 450, at the second communication device 450, each receiver 454 receives a signal through its respective antenna 452. Each receiver 454 recovers information modulated onto an RF carrier and converts the RF stream into a baseband multicarrier symbol stream, which is provided to the receive processor 456. The receive processor 456 and the multi-antenna receive processor 458 implement various signal processing functions of the Ll layer. The multi-antenna receive processor 458 performs receive analog precoding / beamforming operations on the baseband multicarrier symbol stream from the receivers 454. The receive processor 456 converts the baseband multicarrier symbol stream from the receive analog precoding / beamforming operations from the time domain to the frequency domain using a Fast Fourier Transform (FFT). In the frequency domain, the physical layer data signals and the reference signals are demultiplexed by the receive processor 456, where the reference signals will be used for channel estimation, and the data signals are recovered after multi-antenna detection in the multi-antenna receive processor 458 for any spatial streams destined for the second communication device 450. The symbols on each spatial stream are demodulated and recovered by the receive processor 456 and generate soft decisions. The receive processor 456 then decodes and de-interleaves the soft decisions to recover the upper layer data and control signals transmitted by the first communication device 410 on the physical channels. The upper layer data and control signals are then provided to the controller / processor 459. The controller / processor 459 implements the functions of the L2 layer. The controller / processor 459 can be associated with a memory 460 that stores program codes and data. The memory 460 can be referred to as a computer-readable medium. In the transmission from the first communication device 410 to the second communication device 450, the controller / processor 459 provides demultiplexing between transport and logical channels, packet reassembly, deciphering, header decompression, control signal processing to recover upper layer data packets from the core network. The upper layer data packets are then provided to all protocol layers above the L2 layer. Various control signals can also be provided to the L3 for L3 processing.

[0128] In the transmission from the second communication device 450 to the first communication device 410, at the second communication device 450, a data source 467 is used to provide upper layer data packets to a controller / processor 459. The data source 467 represents all protocol layers above the L2 layer. Similar to the transmit function described at the first communication device 410 in the transmission from the first communication device 410 to the second communication device 450, the controller / processor 459 implements header compression, ciphering, packet segmentation and reordering, and multiplexing between logical and transport channels based on radio resource allocations for the user plane and control plane. The controller / processor 459 is also responsible for retransmission of lost packets, and signaling to the first communication device 410. The transmit processor 468 performs modulation mapping, channel coding processing, multi-antenna transmit processor 457 performs digital multi-antenna spatial precoding, including codebook-based precoding and non-codebook-based precoding, and beamforming processing, and then the transmit processor 468 modulates the generated spatial streams into multi-carrier / single-carrier symbol streams, which are then provided to different antennas 452 via the transmitters 454 after analog precoding / beamforming operations in the multi-antenna transmit processor 457. Each transmitter 454 first converts the baseband symbol stream provided by the multi-antenna transmit processor 457 into a radio frequency signal, and then provides the radio frequency signal to the antenna 452.

[0129] In the transmission from the second communication device 450 to the first communication device 410, the functions at the first communication device 410 are similar to the receive functions described at the second communication device 450 in the transmission from the first communication device 410 to the second communication device 450. Each receiver 418 receives a radio frequency signal through its respective antenna 420, converts the received radio frequency signal into a baseband signal, and provides the baseband signal to the multi-antenna receive processor 472 and the receive processor 470. The receive processor 470 and the multi-antenna receive processor 472 together implement the functions of the L1 layer. The controller / processor 475 implements the functions of the L2 layer. The controller / processor 475 can be associated with a memory 476 that stores program codes and data. The memory 476 can be referred to as a computer readable medium. In the transmission from the second communication device 450 to the first communication device 410, the controller / processor 475 provides demultiplexing between transport and logical channels, packet reassembly, deciphering, header decompression, control signal processing to recover upper layer data packets from the UE 450. Upper layer data packets from the controller / processor 475 can be provided to a core network.

[0130] As one embodiment, the first node in the present application comprises the second communication device 450, and the second node in the present application comprises the first communication device 410.

[0131] As one subembodiment of the above embodiment, the first node is a user equipment, and the second node is a relay node.

[0132] As one subembodiment of the above embodiment, the first node is a user equipment, and the second node is a base station equipment.

[0133] As one subembodiment of the above embodiment, the first node is a relay node, and the second node is a base station equipment.

[0134] As one embodiment, the second communication device 450 comprises at least one processor and at least one memory including computer program code; the at least one memory and the computer program code configured to, with the at least one processor, cause the second communication device 450 to perform. The second communication device 450 is caused to at least: send first information on a first channel, the first channel being an uplink channel; wherein the first information indicates at least one RV number for a downlink transmission.

[0135] As one subembodiment of the above embodiment, the second communication device 450 corresponds to the first node in the present application.

[0136] As one embodiment, the second communication device 450 comprises a memory storing a program of computer readable instructions to produce actions when executed by at least one processor, the actions comprising: sending first information on a first channel, the first channel being an uplink channel; wherein the first information indicates at least one RV number for a downlink transmission.

[0137] As one subembodiment of the above embodiment, the second communication device 450 corresponds to the first node in the present application.

[0138] As one embodiment, the first communication device 410 comprises at least one processor and at least one memory including computer program code; the at least one memory and the computer program code configured to, with the at least one processor, cause the first communication device 410 to perform. The first communication device 410 is caused to at least: receive first information on a first channel, the first channel being an uplink channel; wherein the first information indicates at least one RV number for a downlink transmission.

[0139] As one subembodiment of the above embodiment, the first communication device 410 corresponds to the second node in the present application.

[0140] As an embodiment, the first communication device 410 comprises: a memory storing a computer readable program of instructions which, when executed by at least one processor, causes actions comprising: receiving first information on a first channel, the first channel being an uplink channel; wherein the first information indicates at least one RV number for a downlink transmission.

[0141] As a sub-embodiment of the above embodiment, the first communication device 410 corresponds to the second node in the present application.

[0142] As an embodiment, the first node in the present application comprises the second communication device 450.

[0143] As an embodiment, the second node in the present application comprises the first communication device 410.

[0144] As an embodiment, at least one of {the antenna 452, the transmitter 454, the multi-antenna transmission processor 457, the transmission processor 468, the controller / processor 459, the memory 460, the data source 467} is configured to transmit the first information in the present application.

[0145] As an embodiment, at least one of {the antenna 420, the receiver 418, the multi-antenna reception processor 472, the reception processor 470, the controller / processor 475, the memory 476} is configured to receive the first information in the present application.

[0146] As an embodiment, at least one of {the antenna 452, the receiver 454, the multi-antenna reception processor 458, the reception processor 456, the controller / processor 459, the memory 460, the data source 467} is configured to receive the first signaling in the present application.

[0147] As an embodiment, at least one of {the antenna 420, the transmitter 418, the multi-antenna transmission processor 471, the transmission processor 416, the controller / processor 475, the memory 476} is configured to transmit the first signaling in the present application.

[0148] As an embodiment, at least one of {the antenna 452, the receiver 454, the multi-antenna reception processor 458, the reception processor 456, the controller / processor 459, the memory 460, the data source 467} is configured to receive the first bit block in the present application.

[0149] As an embodiment, at least one of {the antenna 420, the transmitter 418, the multi-antenna transmission processor 471, the transmission processor 416, the controller / processor 475, the memory 476} is configured to transmit the first bit block in the present application.

[0150] Embodiment 5

[0151] Embodiment 5 illustrates a signal transmission flowchart according to an embodiment of the present application, as shown in FIG. 5. In FIG. 5, the first node N1 and the second node N2 communicate through an air interface. In particular, in FIG. 5, the steps in the dashed box F1 and the steps in the dashed box F2 are optional.

[0152] The first node N1 transmits first information on a first channel in step S510; receives first signaling in step S511; and receives a first bit block in step S512.

[0153] The second node N2 receives first information on the first channel in step S520; transmits first signaling in step S521; and transmits the first bit block in step S522.

[0154] In embodiment 5, the first channel is an uplink channel, and the first information indicates at least one RV number for a downlink transmission; the downlink transmission is any first type of transmission, and the first type of transmission is a dynamically scheduled transmission.

[0155] As a sub-embodiment of embodiment 5, the first information indicates a first RV sequence, and the first RV sequence includes a plurality of RV numbers, and the RV numbers in the first RV sequence are all RV numbers for the downlink transmission.

[0156] As a sub-embodiment of embodiment 5, the transmission of the first information depends on the number of retransmissions of at least one transport block.

[0157] As a sub-embodiment of embodiment 5, the at least one RV number for the downlink transmission indicated by the first information is for a first ID, and the first ID identifies at least one ML model.

[0158] As a sub-embodiment of embodiment 5, whether the first information indicates that an RV is used for transmission of the first bit block depends on the first signaling.

[0159] As an embodiment, the first node N1 is the first node in the present application.

[0160] As an embodiment, the second node N2 is the second node in the present application.

[0161] As an embodiment, the second node N2 and the first node N1 are a base station and a user equipment, respectively.

[0162] As an embodiment, the second node N2 and the first node N1 are both user equipments.

[0163] As an embodiment, the second node N2 is a serving cell maintaining base station of the first node N1.

[0164] As an embodiment, the air interface between the second node N2 and the first node N1 is a Uu interface.

[0165] As an embodiment, the air interface between the second node N2 and the first node N1 comprises a cellular link.

[0166] As an embodiment, the air interface between the second node N2 and the first node N1 comprises a wireless interface between a base station device and a user equipment.

[0167] As an embodiment, the air interface between the second node N2 and the first node N1 comprises a wireless interface between a satellite device and a user equipment.

[0168] As an embodiment, the air interface between the second node N2 and the first node N1 comprises a wireless interface between a relay device and a user equipment.

[0169] As an embodiment, a ML model is based on a neural network.

[0170] As an embodiment, a ML model is based on a CNN (Conventional Neural Networks).

[0171] As an embodiment, a ML model is based on a Transformer architecture.

[0172] As an embodiment, the steps in the dashed box F1 are present.

[0173] As an embodiment, the steps in the dashed box F1 are not present.

[0174] As an embodiment, the steps in the dashed box F2 are present.

[0175] As an embodiment, the steps in the dashed box F2 are not present.

[0176] As an embodiment, both the steps in the dashed box F1 and the steps in the dashed box F2 are present.

[0177] As an embodiment, neither the step in the dashed box F1 nor the step in the dashed box F2 exists.

[0178] As an embodiment, the second node can take the at least one RV number indicated by the first information for the downlink transmission as input for deriving a final decision, the RV (sequence) actually used for scheduling the downlink transmission does not have to be the RV (sequence) indicated by the first information.

[0179] As an embodiment, the first signaling schedules the transmission of the first bit block.

[0180] As an embodiment, the first signaling is downlink scheduling signaling.

[0181] As an embodiment, the first signaling is physical layer signaling.

[0182] As an embodiment, the first signaling is DCI.

[0183] As an embodiment, the first signaling comprises a first indication field, whether the RV indicated by the first information is used for the transmission of the first bit block depends on the value of the first indication field in the first signaling.

[0184] As an embodiment, the first signaling comprises a first indication field, the value range of the first indication field comprises a plurality of values; the first bit block is repeatedly transmitted a plurality of times, the first information indicates a first RV sequence, one of the plurality of values indicates that the RV corresponding to the first RV sequence is used for the plurality of repeated transmissions of the first bit block.

[0185] As an embodiment, the first signaling comprises a first indication field, the value range of the first indication field comprises a plurality of values; the first bit block is repeatedly transmitted a plurality of times, the first information indicates a first RV sequence, a first value of the plurality of values indicates that the RV corresponding to the first RV sequence is used for the plurality of repeated transmissions of the first bit block, each value other than the first value of the plurality of values indicates that the RV corresponding to a predefined or configured RV sequence is used for the plurality of repeated transmissions of the first bit block.

[0186] As an embodiment, whether there is a relationship between the above-mentioned predefined or configured RV sequence and the first RV sequence is transparent to the first node; therefore, when the first indication field in the first signaling indicates that the RV corresponding to a predefined or configured RV sequence is used for the plurality of repeated transmissions of the first bit block, the first node does not consider that the RV used for the transmission of the first bit block follows the indication of the first information.

[0187] As an embodiment, the first bit block is repeatedly transmitted M times; according to the indication of the first indication field in the first signaling, the RV corresponding to the jth RV number in the corresponding RV sequence is used for the ith (the i is any positive integer not greater than the M) repeated transmission of the first bit block, wherein the relationship between the j and the i satisfies j=i mod T; the T is the length of the corresponding RV sequence.

[0188] As an embodiment, the first information is sent only when the number of the transmission blocks retransmitted at least 2 times among the 10 different transmission blocks including at least 1046 bits received most recently before the first time is greater than 3.

[0189] As an embodiment, the time domain position of the first time is configurable.

[0190] As an embodiment, the first time depends on the first channel.

[0191] As an embodiment, the first time is earlier than the start of the first channel in time domain.

[0192] As an embodiment, the time length between the first time and the start of the first channel in time domain is predefined.

[0193] As an embodiment, the time length between the first time and the start of the first channel in time domain is configurable.

[0194] As an embodiment, the time length between the first time and the start of the first channel in time domain is sufficient for the first node to determine whether to send the first information.

[0195] Embodiment 6

[0196] Embodiment 6 illustrates a schematic diagram of downlink transmission according to an embodiment of the present application, as shown in FIG. 6.

[0197] In embodiment 6, the downlink transmission is any first type of transmission, and the first type of transmission is a dynamically scheduled transmission.

[0198] As an embodiment, in combination with the above features, the scheme disclosed by the present application includes the following features: the RV number indicated by the first information is not only for a certain specific dynamically scheduled downlink transmission, but can be used to determine multiple dynamically scheduled downlink transmissions; under such features, the scheme disclosed by the present application can improve the reception performance of the dynamically scheduled downlink transmission with little uplink signaling overhead.

[0199] As an embodiment, a plurality of the first type of transmissions can be scheduled to the first node.

[0200] As an embodiment, one of the first type of transmissions is a dynamically scheduled transmission by DCI (Downlink Control Information).

[0201] As an embodiment, the first type of transmission is predefined.

[0202] As an embodiment, whether a transmission is of the first type of transmission is configurable.

[0203] As an embodiment, one of the first type of transmissions is a transmission of a bit block.

[0204] As an embodiment, one of the first type of transmissions comprises one or more transmissions of a bit block.

[0205] As an embodiment, any of the first type of transmissions is an initial transmission of a bit block.

[0206] As an embodiment, in combination with the above features, the scheme disclosed by the present application allows the UE to recommend a suitable RV for an initial transmission to the base station for the base station to use or refer to, which is conducive to improving the probability of the initial transmission being correctly received, reducing the retransmission rate, and saving transmission resources.

[0207] As an embodiment, at least one of the first type of transmissions generated at the receiving end of the first information depends on the first information.

[0208] As an embodiment, the first information is used by the receiving end of the first information to determine at least one of the first type of transmissions.

[0209] As an embodiment, the receiving end of the first information determines how to use the first information by itself.

[0210] As an embodiment, the receiving end of the first information determines by itself whether to use the coded bits determined by the corresponding RV according to the indication of the first information to generate one of the first type of transmissions.

[0211] Embodiment 7

[0212] Embodiment 7 illustrates an explanatory diagram of a first RV sequence according to an embodiment of the present application, as shown in FIG. 7.

[0213] In Embodiment 7, the first RV sequence comprises T RV numbers: RV number #1, RV number #2, …, RV number #T; wherein the T is a positive integer greater than 1.

[0214] As one embodiment, the RV number #r is one of 0, 1, 2, 3; wherein the r is any positive integer no greater than the T.

[0215] As one embodiment, the first RV sequence is a sequence consisting of multiple RV numbers.

[0216] As one embodiment, there are multiple identical RV numbers in the first RV sequence.

[0217] As one embodiment, the length of the first RV sequence is predefined.

[0218] As one embodiment, the length of the first RV sequence is configurable.

[0219] As one embodiment, the first node determines the first RV sequence by itself.

[0220] As one embodiment, the first node transmits information indicating the length of the first RV sequence, and the second node receives the information indicating the length of the first RV sequence.

[0221] As one embodiment, the first node receives a first bit block, which is transmitted only once; wherein the RV corresponding to an RV number in the first RV sequence is applied to the transmission of the first bit block.

[0222] As one sub-embodiment of the above embodiment, the RV corresponding to the first RV number in the first RV sequence is applied to the transmission of the first bit block.

[0223] As one sub-embodiment of the above embodiment, the RV corresponding to the last RV number in the first RV sequence is applied to the transmission of the first bit block.

[0224] As one embodiment, the first node receives a first bit block, which is transmitted multiple times; wherein the RV corresponding to each RV number in the first RV sequence is applied to a transmission of the first bit block.

[0225] As one embodiment, the RVs corresponding to the RV numbers in the first RV sequence are applied to the multiple transmissions of the first bit block in sequence.

[0226] As one embodiment, the first node receives a first bit block, comprising: the first node performs receiving for each of the multiple transmissions of the first bit block.

[0227] As an embodiment, the multiple transmissions of the first block of bits include an initial transmission and a retransmission.

[0228] As an embodiment, the multiple transmissions of the first block of bits include multiple repeated transmissions.

[0229] As an embodiment, the first block of bits includes multiple information bits.

[0230] As an embodiment, the first block of bits is a transport block.

[0231] As an embodiment, coded bits for a transmission of the first block of bits are determined according to a corresponding RV.

[0232] As an embodiment, the second node transmits the first block of bits.

[0233] As an embodiment, the second node transmits the first block of bits, including that the second node performs multiple transmissions for the first block of bits.

[0234] Embodiment 8

[0235] Embodiment 8 illustrates a schematic diagram of transmission of first information depending on a number of retransmissions of at least one transport block according to an embodiment of the present application, as shown in FIG. 8.

[0236] In embodiment 8, the first information is transmitted only when a number of transport blocks retransmitted at least K times within a first time window is greater than N;

[0237] wherein the first time window is configurable, and the K and the N are positive integers.

[0238] As an embodiment, the above method has the benefit of improving the use efficiency of the first information.

[0239] As an embodiment, the first information is not transmitted when the number of transport blocks retransmitted at least K times within the first time window is not greater than the N.

[0240] As an embodiment, the K is predefined.

[0241] As an embodiment, the K is configurable.

[0242] As an embodiment, the K is equal to 1.

[0243] As an embodiment, the K is greater than 1.

[0244] As an example, the N is predefined.

[0245] As an example, the N is configurable.

[0246] As an example, the end of the first time window is earlier than the start of the first channel in time domain.

[0247] As an example, the duration between the end of the first time window and the start of the first channel in time domain is sufficient for the first node to determine whether to send the first information.

[0248] Embodiment 9

[0249] Embodiment 9 illustrates an explanatory diagram of transmission of first information depending on the number of retransmissions of at least one transport block according to an embodiment of the present application, as shown in FIG. 9.

[0250] In Embodiment 9, the first information is transmitted only when the number of transport blocks that are retransmitted at least K1 times among the last received N1 different transport blocks before the first time is greater than N2;

[0251] wherein the first time is related to the first channel, and the K1, the N1 and the N2 are positive integers.

[0252] As an example, the above method has the benefit of improving the use efficiency of the first information.

[0253] As an example, when the number of transport blocks that are retransmitted at least K1 times among the last received N1 different transport blocks before the first time is not greater than the N2, the first information is not transmitted.

[0254] As an example, the K1 is predefined.

[0255] As an example, the K1 is configurable.

[0256] As an example, the K1 is equal to 1.

[0257] As an example, the K1 is greater than 1.

[0258] As an example, the N1 is predefined.

[0259] As an example, the N1 is configurable.

[0260] As an example, the N2 is predefined.

[0261] As an example, the N2 is configurable.

[0262] As one embodiment, the N2 is less than the N1.

[0263] As one embodiment, the time domain position of the first time is configurable.

[0264] As one embodiment, the first time is dependent on the first channel.

[0265] As one embodiment, the first time is earlier than the start of the first channel in time domain.

[0266] As one embodiment, the duration between the first time and the start of the first channel in time domain is predefined.

[0267] As one embodiment, the duration between the first time and the start of the first channel in time domain is configurable.

[0268] As one embodiment, the duration between the first time and the start of the first channel in time domain is sufficient for the first node to determine whether to transmit the first information.

[0269] Embodiment 10

[0270] Embodiment 10 illustrates an illustrative diagram of the at least one RV number indicated by the first information for the downlink transmission for the first ID, as shown in FIG. 10, according to one embodiment of the present application.

[0271] In embodiment 10, the at least one RV number indicated by the first information for the downlink transmission can be used for training, reinforcement learning, performance monitoring or testing of one ML model identified by the first ID.

[0272] As one embodiment, the at least one RV number indicated by the first information for the downlink transmission can be used for training of one or more ML models identified by the first ID.

[0273] As one sub-embodiment of the above embodiment, the training of the one or more ML models identified by the first ID is performed at the base station side.

[0274] As one embodiment, the at least one RV number indicated by the first information for the downlink transmission can be used for reinforcement learning of one or more ML models identified by the first ID.

[0275] As one sub-embodiment of the above embodiment, the reinforcement learning of the one or more ML models identified by the first ID is performed at the base station side.

[0276] As an embodiment, the at least one RV number indicated by the first information for the downlink transmission can be used for performance monitoring of one or more ML models identified by the first ID.

[0277] As a sub-embodiment of the above embodiment, the performance monitoring of the one or more ML models identified by the first ID is conducted at the base station side.

[0278] As an embodiment, the at least one RV number indicated by the first information for the downlink transmission can be used for testing of one or more ML models identified by the first ID.

[0279] As a sub-embodiment of the above embodiment, the testing of the one or more ML models identified by the first ID is conducted at the base station side.

[0280] As an embodiment, the at least one RV number indicated by the first information for the downlink transmission can be used as data in a training data set.

[0281] As an embodiment, the at least one RV number indicated by the first information for the downlink transmission can be used as data in a testing data set.

[0282] As an embodiment, the first ID identifies one ML model.

[0283] As an embodiment, the first ID identifies one ML model group, which includes multiple ML models.

[0284] As an embodiment, the first ID identifies the content identified by the first ID is agreed by both sides of the communication.

[0285] As an embodiment, one ML model is an AI model.

[0286] As an embodiment, one ML model includes a mathematical algorithm that can be trained by data and human expert input as examples to replicate the decisions made by experts when providing the same information.

[0287] As an embodiment, the at least one ML model identified by the first ID is a ML model applied at the base station side.

[0288] As an embodiment, the output of one ML model identified by the first ID can be used as scheduling information to schedule one UE.

[0289] Embodiment 11

[0290] Embodiment 11 illustrates a schematic diagram of RAN (Radio Access Network) domain AI / ML function deployment according to an embodiment of the present application, as shown in FIG. 11. The gNB in Embodiment 11 can be replaced by, for example, an eNB, or a network device such as a 6G base station.

[0291] AI / ML related functions include ML training function (also referred to as AI training, or AI / ML training), ML testing function, ML inference function (also referred to as AI inference, or AI / ML inference), and the like. The ML training function, the ML testing function, and the ML inference function can be deployed independently, or can be co-located. The deployment of AI / ML related functions can be implemented by software, such as downloading and / or running of an executable file; or can be implemented by software in combination with hardware, such as acceleration of a specific computing unit by hardware to improve operation speed or save power consumption.

[0292] For the ML training function, it can be deployed in a cross-domain management system, or a domain-specific management system for managing a RAN domain or a CN (Core Network) domain. For example, for the ML training function of MDA (Management Data Analytics), it can be deployed in a MDAF (MDA function); for the ML training of network data analytics, it can be deployed in a NWDAF (Network Data Analytics Function), i.e., the ML training function is a MTLF (Model Training logical function).

[0293] For the ML inference function, it can also be deployed in a cross-domain management system, or a domain-specific management system; for example, the ML inference function is a MDAF, or the ML inference function is an AnLF (Analytics logical function) located in a NWDAF.

[0294] Similarly, the ML testing function can also be deployed in a cross-domain management system, or a domain-specific management system.

[0295] In embodiment 11, the RAN-domain ML training function 1402 is located in the RAN-domain management function 1403; while the ML inference functions are located in the base stations, i.e., the AI / ML inference function 1404 is located in the gNB 1405, the AI / ML inference function 1406 is located in the gNB 1407, and so on.

[0296] In FIG. 11, the management of the ML inference functions of the plurality of base stations is completed by the RAN-domain management function 1403, i.e., data interaction is performed with the RAN-domain MnS (Management Service) consumer / cross-domain management 1401 (as shown by the dashed arrow in FIG. 11).

[0297] Optionally, the management of the ML inference functions can also be completed by the base stations themselves, i.e., each base station can independently perform data interaction with the RAN-domain MnS consumer / cross-domain management 1401.

[0298] It should be noted that embodiment 11 is only one non-limiting implementation; optionally, the ML training function of the RAN domain can also be deployed in the base station; or optionally, part of the base stations deploy the ML inference function and the ML training function of the RAN domain, while part of the base stations only deploy the ML inference function.

[0299] As an example, one gNB (or base station) in embodiment 11 is the second node of the present application.

[0300] As an example, the second node includes one AL / ML inference function in FIG. 11, i.e., 1404 or 1406.

[0301] Embodiment 12

[0302] Embodiment 12 illustrates a schematic diagram of an artificial intelligence or machine learning based processing system according to one embodiment of the present application, as shown in FIG. 12. FIG. 12 includes a first processing machine, a second processing machine, a third processing machine, and a fourth processing machine.

[0303] In embodiment 12, the first processing machine sends a first data set to the second processing machine, and sends a second data set to the third processing machine; the second processing machine generates a target first-type parameter group according to the first data set, and sends the generated target first-type parameter group to the third processing machine; the third processing machine processes the second data set using the target first-type parameter group to obtain a first-type output, and (optionally) sends the first-type output to the fourth processing machine. In FIG. 12, the first-type feedback and the second-type feedback are optional; the second processing machine includes an ML training function; and the third processing machine includes an ML inference function.

[0304] As one embodiment, the fourth processor comprises an ML test function.

[0305] As one embodiment, the fourth processor comprises performance monitoring / evaluation of the ML model.

[0306] As one embodiment, the third processor sends first type feedback to the second processor, which is used to trigger re-computation or update of the target first type parameter set, i.e. trigger ML initial training or ML re-training.

[0307] As one embodiment, the fourth processor sends second type feedback to the first processor, which is used to generate the first data set or the second data set, or which is used to trigger sending of the first data set or sending of the second data set.

[0308] As one embodiment, the first processor generates the first data set and the second data set according to measurement of reference signals.

[0309] As one embodiment, the first type output comprises the first channel information.

[0310] As one embodiment, the first type output comprises index of the target reference signal.

[0311] As one embodiment, the second data set comprises measurement of the first reference signal, or comprises measurement of the second reference signal.

[0312] As one embodiment, the first data set comprises training data.

[0313] As one embodiment, the second processor is used to train an ML model, and the trained model is described by the target first type parameter set.

[0314] As one embodiment, the third processor constructs a model according to the target first type parameter set, and then inputs the second data set into the constructed model to obtain the first type output.

[0315] As one embodiment, the third processor generates a recovery data set according to the first type output, and error of the recovery data set and the second data set is used to generate the first type feedback.

[0316] As one embodiment, the first type feedback is used to reflect performance of the trained model; when the performance of the trained model cannot meet the requirement, the second processor will re-compute the target first type parameter set.

[0317] As one embodiment, the performance of the trained model is considered to be unsatisfactory when the error is too large or has not been updated for too long a time.

[0318] As one embodiment, the target first-type parameter group comprises one or more of a convolution kernel size, a convolution layer number, a convolution stride, a pooling kernel size, a pooling kernel stride, a pooling function, an activation function, or a feature map number.

[0319] As one embodiment, the target first-type parameter group comprises one or more of a convolution kernel, a pooling kernel, a pooling function, an activation function, a parameter of the pooling function, or a parameter of the activation function.

[0320] Embodiment 13

[0321] Embodiment 13 illustrates a flowchart based on artificial intelligence or machine learning according to one embodiment of the present application, as shown in FIG. 13. FIG. 13 includes a first operation, a second operation, a third operation, a fourth operation, and a fifth operation. In embodiment 13, the first operation and the second operation belong to a first phase, the third operation belongs to a second phase, the fourth operation belongs to a third phase, and the fifth operation belongs to a fourth phase. In FIG. 13, the line with an arrow indicates the order of the flow.

[0322] As one embodiment, the first operation comprises AI / ML training, the second operation comprises AI / ML testing, the third operation comprises AI / ML emulation, the fourth operation comprises AI / ML entity loading, and the fifth operation comprises AI / ML inference.

[0323] As one embodiment, the first phase comprises a training phase, the second phase comprises an emulation phase, the third phase comprises a deployment phase, and the fourth phase comprises an inference phase.

[0324] As one embodiment, the first phase comprises AI / ML model training.

[0325] As one embodiment, the first phase comprises AI / ML model training and AI / ML testing.

[0326] As an embodiment, the AI / ML model training includes initial training and re-training of one or a set of AI / ML entities.

[0327] As an embodiment, the AI / ML model training relies on training data.

[0328] As an embodiment, the AI / ML model training includes AI / ML entity validation.

[0329] As an embodiment, the AI / ML entity validation is used to evaluate the performance of the AI / ML entity.

[0330] As an embodiment, the AI / ML entity validation relies on validation data.

[0331] As an embodiment, if the result of AI / ML entity validation is not satisfactory, the AI / ML model will be re-trained.

[0332] As an embodiment, the AI / ML testing includes testing the validated AI / ML entity to evaluate the performance of the trained AI / ML model.

[0333] As an embodiment, if the result of AI / ML testing is satisfactory, the AI / ML entity proceeds to the next stage; otherwise, the AI / ML model will be re-trained.

[0334] As an embodiment, the AI / ML testing relies on testing data.

[0335] As an embodiment, the second stage includes AI / ML simulation, which simulates the inference of the AI / ML entity in a simulation environment.

[0336] As an embodiment, the AI / ML simulation is to evaluate the performance of the inference of the AI / ML entity in a simulation environment before the AI / ML entity is used.

[0337] As an embodiment, the second stage is optional.

[0338] As an embodiment, the third stage includes AI / ML entity loading, which is to obtain the trained AI / ML entity to obtain the desired AI / ML inference function.

[0339] As an embodiment, the third stage is optional.

[0340] As one embodiment, the third stage is no longer needed when the training function and the inference function are co-located.

[0341] As one embodiment, the fourth stage includes AI / ML inference.

[0342] Embodiment 14

[0343] Embodiment 14 illustrates a structural block diagram of a processing apparatus in a first node according to one embodiment of the present application, as shown in FIG. 14. In FIG. 14, the processing apparatus A00 in the first node includes a first receiver A01 and a first transmitter A02.

[0344] As one embodiment, the first node is a user equipment.

[0345] As one embodiment, the first node is a relay node.

[0346] As one embodiment, the first node is a vehicle mounted communication device.

[0347] As one embodiment, the first receiver A01 includes at least one of the antenna 452, the receiver 454, the multi-antenna reception processor 458, the reception processor 456, the controller / processor 459, the memory 460 and the data source 467 in FIG. 4 of the present application.

[0348] As one embodiment, the first receiver A01 includes at least the first five of the antenna 452, the receiver 454, the multi-antenna reception processor 458, the reception processor 456, the controller / processor 459, the memory 460 and the data source 467 in FIG. 4 of the present application.

[0349] As one embodiment, the first receiver A01 includes at least the first four of the antenna 452, the receiver 454, the multi-antenna reception processor 458, the reception processor 456, the controller / processor 459, the memory 460 and the data source 467 in FIG. 4 of the present application.

[0350] As one embodiment, the first receiver A01 includes at least the first three of the antenna 452, the receiver 454, the multi-antenna reception processor 458, the reception processor 456, the controller / processor 459, the memory 460 and the data source 467 in FIG. 4 of the present application.

[0351] As one embodiment, the first receiver A01 includes at least the first two of the antenna 452, the receiver 454, the multi-antenna reception processor 458, the reception processor 456, the controller / processor 459, the memory 460 and the data source 467 in FIG. 4 of the present application.

[0352] As an example, the first transmitter A02 includes at least one of the following: antenna 452, transmitter 454, multi-antenna transmission processor 457, transmission processor 468, controller / processor 459, memory 460, and data source 467 in FIG. 4 of the present application.

[0353] As an example, the first transmitter A02 includes at least five of the following: antenna 452, transmitter 454, multi-antenna transmission processor 457, transmission processor 468, controller / processor 459, memory 460, and data source 467 in FIG. 4 of the present application.

[0354] As an example, the first transmitter A02 includes at least four of the following: antenna 452, transmitter 454, multi-antenna transmission processor 457, transmission processor 468, controller / processor 459, memory 460, and data source 467 in FIG. 4 of the present application.

[0355] As an example, the first transmitter A02 includes at least three of the following: antenna 452, transmitter 454, multi-antenna transmission processor 457, transmission processor 468, controller / processor 459, memory 460, and data source 467 in FIG. 4 of the present application.

[0356] As an example, the first transmitter A02 includes at least two of the following: antenna 452, transmitter 454, multi-antenna transmission processor 457, transmission processor 468, controller / processor 459, memory 460, and data source 467 in FIG. 4 of the present application.

[0357] As an example, the first transmitter A02 transmits the first information on a first channel, the first channel is an uplink channel.

[0358] wherein the first information indicates at least one RV number for the downlink transmission.

[0359] As an example, the first information indicates a first RV sequence, the first RV sequence includes a plurality of RV numbers, and each RV number in the first RV sequence is an RV number for the downlink transmission.

[0360] As an example, the downlink transmission is any first type of transmission, and the first type of transmission is a dynamically scheduled transmission.

[0361] As an example, the downlink transmission is any one of a plurality of dynamically scheduled transmissions, and any two of the plurality of dynamically scheduled transmissions are transmissions on different downlink channels.

[0362] As one embodiment, the sending of the first information depends on the number of retransmissions of at least one transport block.

[0363] As one embodiment, the first information is sent only when the number of transport blocks retransmitted at least K times within a first time window is greater than N.

[0364] wherein the first time window is configurable, and the K and the N are positive integers.

[0365] As one embodiment, the first information is sent only when the number of transport blocks retransmitted at least K1 times among the last N1 different transport blocks received before a first time is greater than N2.

[0366] wherein the first time is related to the first channel, and the K1, the N1 and the N2 are positive integers.

[0367] As one embodiment, the at least one RV number indicated by the first information for the downlink transmission is for a first ID, the first ID identifying at least one ML model.

[0368] As one embodiment, the first receiver A01 receives a first signaling and a first bit block.

[0369] wherein whether the RV indicated by the first information is used for transmission of the first bit block depends on the first signaling.

[0370] As one embodiment, the first transmitter A02 sends a first information on a first channel; the first channel is an uplink channel, the first information indicates a first RV sequence, the first RV sequence includes a plurality of RV numbers, and the RV numbers in the first RV sequence are all RV numbers for the downlink transmission; the downlink transmission is any first type of transmission, and the first type of transmission is a dynamically scheduled transmission.

[0371] As one sub-embodiment of the above embodiment, the sending of the first information depends on the number of retransmissions of at least one transport block; and the first RV sequence is for a first ID, the first ID identifying at least one ML model.

[0372] As one sub-embodiment of the above embodiment, the first receiver A01 receives a first signaling and a first bit block; wherein whether the RV indicated by the first information is used for transmission of the first bit block depends on the first signaling.

[0373] As a sub-embodiment of the above-mentioned embodiment, the sending of the first information depends on a number of retransmissions of at least one transport block; the first RV sequence is for a first ID, the first ID identifying at least one ML model; the first receiver A01 receives first signaling and the first bit block; wherein whether the RV indicated by the first information is used for transmission of the first bit block depends on the first signaling.

[0374] As an embodiment, the first transmitter A02 sends the first information on a first channel; the first channel is an uplink channel, the first information indicates a first RV sequence, the first RV sequence comprises a plurality of RV numbers, the RV numbers in the first RV sequence are all for RV numbers of the downlink transmission; the downlink transmission is any one of a plurality of dynamically scheduled transmissions, any two of the plurality of dynamically scheduled transmissions are transmissions on different downlink channels.

[0375] As a sub-embodiment of the above-mentioned embodiment, the sending of the first information depends on a number of retransmissions of at least one transport block; the first RV sequence is for a first ID, the first ID identifying at least one ML model.

[0376] As a sub-embodiment of the above-mentioned embodiment, the first receiver A01 receives first signaling and the first bit block; wherein whether the RV indicated by the first information is used for transmission of the first bit block depends on the first signaling.

[0377] As a sub-embodiment of the above-mentioned embodiment, the sending of the first information depends on a number of retransmissions of at least one transport block; the first RV sequence is for a first ID, the first ID identifying at least one ML model; the first receiver A01 receives first signaling and the first bit block; wherein whether the RV indicated by the first information is used for transmission of the first bit block depends on the first signaling.

[0378] Embodiment 15

[0379] Embodiment 15 illustrates a structural block diagram of a processing apparatus in a second node according to an embodiment of the present application, as shown in FIG. 15. In FIG. 15, the processing apparatus B00 in the second node comprises a second transmitter B01 and a second receiver B02.

[0380] As an embodiment, the second node is a base station.

[0381] As an embodiment, the second node is a satellite device.

[0382] As an embodiment, the second node is a relay node.

[0383] As one embodiment, the second node is one of a test apparatus, a test device, a test instrument.

[0384] As one embodiment, the second transmitter B01 includes at least one of the antenna 420, the transmitter 418, the multi-antenna transmit processor 471, the transmit processor 416, the controller / processor 475, and the memory 476 of FIG. 4.

[0385] As one embodiment, the second transmitter B01 includes at least the first five of the antenna 420, the transmitter 418, the multi-antenna transmit processor 471, the transmit processor 416, the controller / processor 475, and the memory 476 of FIG. 4.

[0386] As one embodiment, the second transmitter B01 includes at least the first four of the antenna 420, the transmitter 418, the multi-antenna transmit processor 471, the transmit processor 416, the controller / processor 475, and the memory 476 of FIG. 4.

[0387] As one embodiment, the second transmitter B01 includes at least the first three of the antenna 420, the transmitter 418, the multi-antenna transmit processor 471, the transmit processor 416, the controller / processor 475, and the memory 476 of FIG. 4.

[0388] As one embodiment, the second transmitter B01 includes at least the first two of the antenna 420, the transmitter 418, the multi-antenna transmit processor 471, the transmit processor 416, the controller / processor 475, and the memory 476 of FIG. 4.

[0389] As one embodiment, the second receiver B02 includes at least one of the antenna 420, the receiver 418, the multi-antenna receive processor 472, the receive processor 470, the controller / processor 475, and the memory 476 of FIG. 4.

[0390] As one embodiment, the second receiver B02 includes at least the first five of the antenna 420, the receiver 418, the multi-antenna receive processor 472, the receive processor 470, the controller / processor 475, and the memory 476 of FIG. 4.

[0391] As one embodiment, the second receiver B02 includes at least the first four of the antenna 420, the receiver 418, the multi-antenna receive processor 472, the receive processor 470, the controller / processor 475, and the memory 476 of FIG. 4.

[0392] As an embodiment, the second receiver B02 comprises at least the first three of the antenna 420, the receiver 418, the multi-antenna reception processor 472, the reception processor 470, the controller / processor 475 and the memory 476 in the application FIG. 4.

[0393] As an embodiment, the second receiver B02 comprises at least the first two of the antenna 420, the receiver 418, the multi-antenna reception processor 472, the reception processor 470, the controller / processor 475 and the memory 476 in the application FIG. 4.

[0394] As an embodiment, the second receiver B02 receives the first information on a first channel, the first channel being an uplink channel.

[0395] The first information indicates at least one RV number for a downlink transmission.

[0396] As an embodiment, the first information indicates a first RV sequence, the first RV sequence comprising a plurality of RV numbers, all of the RV numbers in the first RV sequence being RV numbers for the downlink transmission.

[0397] As an embodiment, the downlink transmission is any first type of transmission, the first type of transmission being a dynamically scheduled transmission.

[0398] As an embodiment, the downlink transmission is any of a plurality of dynamically scheduled transmissions, any two of the plurality of dynamically scheduled transmissions being transmissions on different downlink channels.

[0399] As an embodiment, the sending of the first information depends on a number of retransmissions of at least one transport block.

[0400] As an embodiment, the first information is sent only when the number of transport blocks that are retransmitted at least K times within a first time window is greater than N.

[0401] The first time window is configurable, and the K and the N are positive integers.

[0402] As an embodiment, the first information is sent only when the number of transport blocks that are retransmitted at least K1 times among the last N1 different transport blocks received before a first time is greater than N2.

[0403] The first time is related to the first channel, and the K1, the N1 and the N2 are positive integers.

[0404] As an embodiment, the at least one RV number indicated by the first information for the downlink transmission is for a first ID, the first ID identifying at least one ML model.

[0405] As an embodiment, the second transmitter B01 transmits the first signaling and the first bit block.

[0406] Wherein, whether the RV indicated by the first information is used for the transmission of the first bit block depends on the first signaling.

[0407] A person of ordinary skill in the art can understand that all or part of the steps of the above method can be instructed by a program to complete the relevant hardware, and the program can be stored in a computer readable storage medium, such as a read-only memory, a hard disk, or an optical disk, etc. Optionally, all or part of the steps of the above embodiment can also be implemented by using one or more integrated circuits. Correspondingly, each module unit in the above embodiment can be implemented in the form of hardware or in the form of a software function module, and the present application is not limited to any specific form of combination of software and hardware. The user equipment, terminal and UE in the present application include but are not limited to unmanned aerial vehicles, communication modules on unmanned aerial vehicles, remote control aircraft, aircraft, small aircraft, mobile phones, tablet computers, notebooks, vehicle-mounted communication devices, vehicles, vehicles, RSUs, wireless sensors, network cards, Internet of Things terminals, RFID (Radio Frequency Identification) terminals, NB-IoT (Narrow Band Internet of Things) terminals, MTC (Machine Type Communication) terminals, eMTC (enhanced MTC) terminals, data cards, network cards, vehicle-mounted communication devices, low-cost mobile phones, low-cost tablet computers, and other wireless communication devices. The base station or system device in the present application includes but is not limited to macro cellular base stations, micro cellular base stations, small cellular base stations, home base stations, relay base stations, eNB (evolved Node B), gNB, TRP, GNSS (Global Navigation Satellite System), relay satellites, satellite base stations, air base stations, RSUs, unmanned aerial vehicles, test equipment such as wireless communication devices that simulate part of the functions of base stations or signaling testers, etc.

[0408] Those skilled in the art will appreciate that the application can be practiced by other than the described embodiments, which are presented for purposes of illustration and not of limitation, without departing from the core or essential teaching of the application. The present embodiments are thus to be considered in all respects as illustrative and not restrictive, and all changes coming within the meaning and equivalency range of the appended claims are intended to be embraced therein.

Claims

1. A first node configured for wireless communication, the first node comprising: Comprising: a first transmitter, configured to transmit first information on a first channel, the first channel being an uplink channel; wherein the first information indicates at least one RV number for a downlink transmission.

2. The first node of claim 1, wherein the first information indicates a first RV sequence, the first RV sequence comprising a plurality of RV numbers, the RV numbers in the first RV sequence all being RV numbers for the downlink transmission.

3. The first node of claim 1 or 2, wherein the downlink transmission is any first type of transmission, the first type of transmission being a dynamically scheduled transmission; or wherein the downlink transmission is any of a plurality of dynamically scheduled transmissions, any two of the plurality of dynamically scheduled transmissions being transmissions on different downlink channels.

4. The first node of any of claims 1 to 3, wherein the transmission of the first information depends on a number of retransmissions of at least one transport block.

5. The first node of claim 4, wherein the first information is transmitted only if the number of transport blocks retransmitted at least K times within a first time window is greater than N; wherein the first time window is configurable, and K and N are positive integers.

6. The first node of any of claims 1 to 5, wherein the at least one RV number for the downlink transmission indicated by the first information is for a first ID, the first ID identifying at least one ML model.

7. The first node of any of claims 1-6, wherein, Comprising: a first receiver, configured to receive first signaling and a first block of bits; wherein whether the RV indicated by the first information is used for transmission of the first block of bits depends on the first signaling.

8. A second node configured for wireless communication, the second node comprising: Comprising: a second receiver, configured to receive first information on a first channel, the first channel being an uplink channel; wherein the first information indicates at least one RV number for a downlink transmission.

9. The second node of claim 8, wherein the first information indicates a first RV sequence, the first RV sequence comprising a plurality of RV numbers, the RV numbers in the first RV sequence all being RV numbers for the downlink transmission.

10. The second node of claim 8 or 9, wherein the downlink transmission is any first type of transmission, the first type of transmission being a dynamically scheduled transmission; or wherein the downlink transmission is any of a plurality of dynamically scheduled transmissions, any two of the plurality of dynamically scheduled transmissions being transmissions on different downlink channels.

11. The second node of any of claims 8 to 10, wherein the transmission of the first information depends on a number of retransmissions of at least one transport block.

12. The second node of claim 11, wherein the first information is transmitted only if the number of transport blocks retransmitted at least K times within a first time window is greater than N; wherein the first time window is configurable, and K and N are positive integers.

13. The second node of any of claims 8-12, wherein the first information indicates the at least one RV number for the downlink transmission for a first ID, the first ID identifying at least one ML model. comprising:

14. The second node of any of claims 8-13, wherein, a second transmitter that transmits the first signaling and the first block of bits; wherein whether the first information indicates the RV for transmission of the first block of bits depends on the first signaling. comprising:

15. A method in a first node used for wireless communication, characterized by, transmitting the first information on a first channel, the first channel being an uplink channel; wherein the first information indicates the at least one RV number for a downlink transmission.

16. The method in the first node of claim 15, wherein the first information indicates a first sequence of RVs, the first sequence of RVs comprising a plurality of RV numbers, the RV numbers in the first sequence of RVs all being RV numbers for the downlink transmission.

17. The method in the first node of claim 15 or 16, wherein the downlink transmission is any of a first type of transmission, the first type of transmission being a dynamically scheduled transmission; or wherein the downlink transmission is any of a plurality of dynamically scheduled transmissions, any two of the plurality of dynamically scheduled transmissions being transmissions on different downlink channels.

18. The method in the first node of any of claims 15-17, wherein the transmitting of the first information depends on a number of retransmissions of at least one transport block.

19. The method in the first node of claim 18, wherein the first information is transmitted only if the number of transport blocks that have been retransmitted at least K times within a first time window is greater than N; wherein the first time window is configurable, and K and N are positive integers.

20. The method in the first node of any of claims 15-19, wherein the first information indicates the at least one RV number for the downlink transmission for a first ID, the first ID identifying at least one ML model. comprising:

21. A method in a first node according to any of claims 15 to 20, characterized by, receiving the first signaling and the first block of bits; wherein whether the first information indicates the RV for transmission of the first block of bits depends on the first signaling. comprising:

22. A method in a second node used for wireless communication, characterized by, receiving the first information on a first channel, the first channel being an uplink channel; wherein the first information indicates the at least one RV number for a downlink transmission.

23. The method in the second node of claim 22, wherein the first information indicates a first sequence of RVs, the first sequence of RVs comprising a plurality of RV numbers, the RV numbers in the first sequence of RVs all being RV numbers for the downlink transmission.

24. The method in the second node of claim 22 or 23, wherein the downlink transmission is any of a first type of transmission, the first type of transmission being a dynamically scheduled transmission; or wherein the downlink transmission is any of a plurality of dynamically scheduled transmissions, any two of the plurality of dynamically scheduled transmissions being transmissions on different downlink channels. The downlink transmission is any of a plurality of dynamically scheduled transmissions, any two of the plurality of dynamically scheduled transmissions being transmissions on different downlink channels.

25. The method in a second node according to any of claims 22-24, wherein The sending of the first information depends on a number of retransmissions of at least one transport block.

26. The method in a second node according to claim 25, wherein The first information is sent only if a number of transport blocks retransmitted at least K times within a first time window is greater than N; wherein the first time window is configurable, and K and N are positive integers.

27. The method in a second node according to any of claims 22-26, wherein The at least one RV number indicated by the first information for the downlink transmission is for a first ID, the first ID identifying at least one ML model.

28. A method in a second node according to any of claims 22 - 27, characterized by, comprising: sending first signaling and a first block of bits; wherein whether the RV indicated by the first information is used for transmission of the first block of bits depends on the first signaling.

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