Communication methods, end devices, and network equipment.

Abstract

DEPCT6330 / 09 / 2562 The specifications in this request will provide for the communication methods, terminal devices, and network equipment. The method involves: using a terminal device to determine at least one target characteristic. This refers to air interface technology; and the use of terminal devices to communicate with network devices. By utilizing at least one target characteristic of the air interface technology for this reason. According to the method provided in the form of this request, the target characteristics belong to the technology itself. The air interface and its use during actual communication can therefore be judged and determined from its characteristics. There are several options available for air interface technology. ----------------------------------------------------------- DEPCT63 The design concept of this application provides a method for communication between end devices and peripheral devices. The methodology via the network includes: consideration of at least one characteristic by the end device. The goal of air interface technology and end-device communication is to facilitate communication between devices. The network utilizes at least one characteristic of air interface technology, therefore, according to... The methods described in this application's central hub characterize the technological interface as the target. The atmosphere and manner in which actual communication takes place are largely determined by chosen etiquette. Of air interface technology. -----------------------------------------------------------

Description

A communication method and its terminal equipment and network equipment

[0001] This application claims priority to Chinese Patent Application No. 201710005557.8, filed on January 4, 2017, entitled "A Communication Method and its Terminal Equipment and Network Equipment", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of communications, and more specifically, to a communication method and its terminal equipment and network equipment. Background Technology

[0003] In Long Term Evolution (LTE) technology, various air interface technologies (such as random access mode, uplink waveform, uplink multiple access mode, modulation mode, duplex mode, etc.) all adopt one or more specific methods, which are specified in the communication protocol: for a certain air interface technology, a certain specific method is always adopted or a certain specific method is adopted under certain conditions.

[0004] In existing LTE systems, most air interface technologies use only one fixed method, such as a transmission time interval (TTI) of only 1ms. Therefore, when a terminal device initially connects to the network device, it connects to the system in accordance with the method specified by the protocol. However, in 5G systems, each air interface technology may use multiple optional methods, and each possible method may have its own usage conditions.

[0005] Therefore, there is an urgent need for a technical means that enables terminal devices and network devices to select the air interface technology to be used for actual communication from a variety of available air interface technologies, based on the actual situation.

[0006] Summary of the Invention

[0007] This application provides a communication method that can determine the target mode of air interface technology used in actual communication from a variety of optional air interface technologies.

[0008] In a first aspect, a communication method is provided, comprising: a terminal device determining a target mode of at least one air interface technology; the terminal device communicating with a network device using the target mode of the at least one air interface technology.

[0009] Therefore, the method provided in this application embodiment can determine the target mode of air interface technology used in actual communication from a variety of optional air interface technologies.

[0010] In conjunction with the first aspect, in a first possible implementation of the first aspect, the terminal device determines the target mode of at least one air interface technology, including: the terminal device receiving a notification message sent by the network device, the notification message carrying the target mode of the at least one air interface technology, the target mode of the at least one air interface technology being determined by the network device from the optional modes of the at least one air interface technology.

[0011] Therefore, the terminal device can determine the target air interface technology to be used in actual communication from a variety of options based on the notification message sent by the network device. It can flexibly adopt a more suitable air interface technology according to the actual communication situation to adapt to different communication scenarios.

[0012] In conjunction with the first aspect and its above-described implementations, in a second possible implementation of the first aspect, the notification message is a system message sent by the network device, and the target method of using the at least one air interface technology to communicate with the network device includes: using the target method of the at least one air interface technology to initially randomly access the network device.

[0013] Therefore, the terminal device can determine the target air interface technology to be used when initially accessing the system from a variety of options based on the notification message sent by the network device. It can flexibly adopt a more suitable air interface technology according to the actual communication situation to adapt to different communication scenarios.

[0014] In conjunction with the first aspect and its above-described implementations, in the third possible implementation of the first aspect, the notification message is the initial random access message 2, and the target method of using the at least one air interface technology to communicate with the network device includes: sending the initial random access message 3 to the network device using the target method of the at least one air interface technology.

[0015] Therefore, based on message 2 sent by the network device, the terminal device can determine the target air interface technology used in the initial random access message 3 from among the various options of air interface technology. The terminal device can determine the target air interface technology to be used according to the instructions of the network device, so as to better adapt to the actual network conditions.

[0016] In conjunction with the first aspect and its above-described implementations, in a fourth possible implementation of the first aspect, the initial random access message 2 carries the target mode of at least one air interface technology, the target mode of the at least one air interface technology including the target mode of the uplink waveform, and the step of sending the initial random access message 3 to the network device using the target mode of the at least one air interface technology includes: determining the content value of the resource block allocation (RB) field in the initial random access message 2; determining the resource location of the initial random access message 3 according to whether the target mode of the uplink waveform is Discrete Fourier Transform Extended Orthogonal Frequency Division Multiplexing (DFT-s-OFDM) or Cyclic Prefix Orthogonal Frequency Division Multiplexing (CP-OFDM), wherein the resource location of the initial random access message 3 determined when the target mode of the uplink waveform is DFT-s-OFDM is different from the resource location of the initial random access message 3 determined when the uplink waveform is CP-OFDM; and sending the initial random access message 3 to the network device at the determined resource location.

[0017] In conjunction with the first aspect and its above-described implementations, in the fifth possible implementation of the first aspect, the network device is the target network device that the terminal device wishes to switch to, and the notification message is a switching command (HO command).

[0018] It should be understood that when a terminal device switches from a source network device to a target network device, it will learn from the HO command sent by the target network device the target method of at least one air interface technology to be used in subsequent communication.

[0019] Therefore, the terminal device can determine the target air interface technology to be used when switching network devices from a variety of options based on the notification message sent by the network device. It can flexibly adopt a more suitable air interface technology according to the actual communication situation to adapt to different communication scenarios.

[0020] In conjunction with the first aspect and its above-described implementations, in the sixth possible implementation of the first aspect, after the terminal device initially accesses the network device, the notification message is one of the following messages: physical layer message, media access control (MAC) message, or radio resource control (RRC) message.

[0021] In conjunction with the first aspect and its above-described implementations, in the seventh possible implementation of the first aspect, the terminal device determines the target mode of at least one air interface technology, including: the terminal device selects the target mode of the at least one air interface technology from the optional modes of the at least one air interface technology according to the air interface technology selection strategy.

[0022] Optionally, the terminal device may determine the air interface technology selection strategy according to the communication protocol, and the terminal device may determine the target mode of the at least one air interface technology from the at least one optional mode according to the air interface technology selection strategy.

[0023] Therefore, terminal devices can determine the target air interface technology to use when communicating with network devices from a variety of available air interface technology options, based on the air interface technology selection strategy. In other words, they can flexibly adopt a more suitable air interface technology method according to the actual communication situation to adapt to different communication scenarios.

[0024] In conjunction with the first aspect and its above-described implementations, in the eighth possible implementation of the first aspect, the method further includes: receiving a system message sent by the network device, wherein the system message carries the air interface technology selection strategy.

[0025] In other words, network devices can send system messages carrying air interface technology selection strategies to terminal devices to notify the UE to determine the target air interface technology to be used when communicating with the network device from a variety of available air interface technology options.

[0026] In conjunction with the first aspect and its above-described implementations, in the ninth possible implementation of the first aspect, the method of using the at least one air interface technology to communicate with the network device includes: sending a selection notification message to the network device, wherein the selection notification message is used to indicate that the terminal device will use the at least one air interface technology to communicate with the network device.

[0027] In other words, after the terminal device determines the target method of the air interface technology for communicating with the network device, it needs to notify the network device of the target method of the air interface technology to be used.

[0028] In conjunction with the first aspect and its above-described implementations, in the tenth possible implementation of the first aspect, the target mode of the at least one air interface technology includes at least one of the following: when the air interface technology is a random access mode, the target mode is one of the following: the random access mode of LTE and the simplified random access mode; and / or when the air interface technology is an uplink waveform, the target mode is one of the following: cyclic prefix orthogonal frequency division multiplexing (CP-OFDM) and discrete Fourier transform extended orthogonal frequency division multiplexing (DFT-S-OFDM); and / or when the air interface technology is an uplink multiple access mode, the target mode is one of the following: sparse code multiple access (SCMA), multi-user shared access (MUSA), low code rate spreading, and frequency domain propagation. Spreading mode, Non-orthogonal coded multiple access (NCMA), Non-orthogonal coded multiple access (NOMA), Type-division multiple access (PDMA), Resource Extended Multiple Access (RSMA), Interleaved Mesh Multiple Access (IGMA), Low-density Spreading (LDS-SVE) using eigenvector extension, Shared Access (LSSA) based on low code rate and signature features, Non-orthogonal coded multiple access (NOCA), Interleaved multiple access (IDMA), Multiple Division Multiple Access (RDMA), Group Orthogonal coded multiple access (GOCA); and / or when the air interface technology is a modulation mode, the target mode is one of the following: Quadrature Phase Shift Keying (QPSK), 16-QAM, 64-QAM, 256-QAM, Constellation mapping among subcarriers, Non-uniform QAM, Higher-order modulation in conjunction with MIMO, Coded modulation. Modulations: Spatial modulation, Mappings of bits to symbol(s) Rotated-QAM up to BPSK, Mappings of bits to symbol(s) Rotated-QAM up to QPSK, Constellation Interpolation;And / or when the air interface technology is a duplex mode, the target mode is one of the following: Frequency Division Duplex (FDD), Time Division Duplex (TDD), Dynamic Time Division Duplex (TDD), Flexible Duplex, Space Division Full-Duplex, In-band Full-Duplex; and / or when the air interface technology is the coding method for the uplink control channel of enhanced mobile broadband (eMBB) service, the target mode is one of the following: Polar Codes, Repetition, Block Coding; and / or when the air interface technology is an inactive uplink data transmission mode, the target mode is one of the following: Grant-free transmission, 2-step RACH; and / or when the air interface technology is a subcarrier spacing, the target mode is one of the following: 15kHz*2. n n is an integer; when the air interface technology is of type Slot, the target mode is one of the following: slot duration is 7 or 14 Orthogonal Frequency Division Multiplexing (OFDM) symbols, or Mini-slot. The duration is m OFDM symbols, where m ∈ {1, 6}; and / or when the air interface technology is a transmission TTI length, the target mode is one of the following: {downlink short TTI length: 2 OFDM symbols, uplink short TTI length: 2 OFDM symbols}, {downlink short TTI length: 2 OFDM symbols, uplink short TTI length: 4 OFDM symbols}, {downlink short TTI length: 2 OFDM symbols, uplink short TTI length: 7 OFDM symbols}, {downlink short TTI length: 7 OFDM symbols, uplink short TTI length: 7 OFDM symbols}, {downlink short TTI length: 2 OFDM symbols, uplink short TTI length: 14 OFDM symbols}, {downlink short TTI length: 7 OFDM symbols, uplink short TTI length: 14 OFDM symbols}.

[0029] In a second aspect, a communication method is provided, comprising: a network device determining a target mode of at least one air interface technology; the network device using the target mode of the at least one air interface technology to communicate with a terminal device.

[0030] Therefore, the method provided in this application embodiment can determine the target mode of air interface technology used in actual communication from a variety of optional air interface technologies.

[0031] In conjunction with the second aspect, in a first possible implementation of the second aspect, the network device determines a target mode for at least one air interface technology, comprising: the network device determining the target mode for the at least one air interface technology from optional modes of the at least one air interface technology; and the network device sending a notification message to the terminal device, the notification message carrying the target mode for the at least one air interface technology.

[0032] In conjunction with the second aspect, in a second possible implementation of the second aspect, the notification message is a system message, so that the terminal device can initially and randomly access the network device using the target method of the at least one air interface technology.

[0033] In conjunction with the second aspect, in a third possible implementation of the second aspect, the notification message is an initial random access message 2, so that the terminal device can send an initial random access message 3 to the network device according to the target method of the at least one air interface technology.

[0034] In conjunction with the second aspect, in the fourth possible implementation of the second aspect, the network device is the target network device that the terminal device wishes to switch to, and the notification message is a HO command message.

[0035] In conjunction with the second aspect, in the fifth possible implementation of the second aspect, after the terminal device accesses the network device, the notification message is one of the following messages: physical layer message, media access control (MAC) message, or radio resource control (RRC) message.

[0036] In conjunction with the second aspect, in the sixth possible implementation of the second aspect, the target mode of the at least one air interface technology includes at least one of the following: when the air interface technology is a random access mode, the target mode is one of the following: the random access mode of LTE and the simplified random access mode; and / or when the air interface technology is an uplink waveform, the target mode is one of the following: cyclic prefix orthogonal frequency division multiplexing (CP-OFDM) and discrete Fourier transform extended orthogonal frequency division multiplexing (DFT-S-OFDM); and / or when the air interface technology is an uplink multiple access mode, the target mode is one of the following: sparse code multiple access (SCMA), multi-user shared access (MUSA), low code rate spreading, and frequency domain propagation. Spreading mode, Non-orthogonal coded multiple access (NCMA), Non-orthogonal coded multiple access (NOMA), Type-division multiple access (PDMA), Resource Extended Multiple Access (RSMA), Interleaved Mesh Multiple Access (IGMA), Low-density Spreading (LDS-SVE) using eigenvector extension, Shared Access (LSSA) based on low code rate and signature features, Non-orthogonal coded multiple access (NOCA), Interleaved multiple access (IDMA), Multiple Division Multiple Access (RDMA), Group Orthogonal coded multiple access (GOCA); and / or when the air interface technology is a modulation mode, the target mode is one of the following: Quadrature Phase Shift Keying (QPSK), 16-QAM, 64-QAM, 256-QAM, Constellation mapping among subcarriers, Non-uniform QAM, Higher-order modulation in conjunction with MIMO, Coded modulation. Modulations: Spatial modulation, Mappings of bits to symbol(s) Rotated-QAM up to BPSK, Mappings of bits to symbol(s) Rotated-QAM up to QPSK, Constellation Interpolation;And / or when the air interface technology is a duplex mode, the target mode is one of the following: Frequency Division Duplex (FDD), Time Division Duplex (TDD), Dynamic Time Division Duplex (TDD), Flexible Duplex, Space Division Full-Duplex, In-band Full-Duplex; and / or when the air interface technology is the coding method for the uplink control channel of enhanced mobile broadband (eMBB) service, the target mode is one of the following: Polar Codes, Repetition, Block Coding; and / or when the air interface technology is an inactive uplink data transmission mode, the target mode is one of the following: Grant-free transmission, 2-step RACH; and / or when the air interface technology is a subcarrier spacing, the target mode is one of the following: 15kHz*2. n n is an integer; when the air interface technology is of type Slot, the target mode is one of the following: slot duration is 7 or 14 Orthogonal Frequency Division Multiplexing (OFDM) symbols, or Mini-slot. The duration is m OFDM symbols, where m ∈ {1, 6}; and / or when the air interface technology is a transmission TTI length, the target mode is one of the following: {downlink short TTI length: 2 OFDM symbols, uplink short TTI length: 2 OFDM symbols}, {downlink short TTI length: 2 OFDM symbols, uplink short TTI length: 4 OFDM symbols}, {downlink short TTI length: 2 OFDM symbols, uplink short TTI length: 7 OFDM symbols}, {downlink short TTI length: 7 OFDM symbols, uplink short TTI length: 7 OFDM symbols}, {downlink short TTI length: 2 OFDM symbols, uplink short TTI length: 14 OFDM symbols}, {downlink short TTI length: 7 OFDM symbols, uplink short TTI length: 14 OFDM symbols}.

[0037] Therefore, network devices determine the target air interface technology to use when communicating with terminal devices from a variety of available air interface technologies. In other words, they can flexibly adopt a more suitable air interface technology based on the actual communication situation to adapt to different communication scenarios.

[0038] Thirdly, a terminal device is provided for executing the method of the first aspect or any possible implementation thereof. Specifically, the terminal device includes units for executing the method of the first aspect or any possible implementation thereof.

[0039] Fourthly, a network device is provided for performing the method of the second aspect or any possible implementation thereof. Specifically, the network device includes units for performing the method of the second aspect or any possible implementation thereof.

[0040] Fifthly, a terminal device is provided, comprising: a transceiver, a memory, a processor, and a bus system. The transceiver, the memory, and the processor are connected via the bus system. The memory stores instructions, and the processor executes the instructions stored in the memory to control the transceiver to receive and / or transmit signals. When the processor executes the instructions stored in the memory, the execution causes the processor to perform the method of the first aspect or any possible implementation thereof.

[0041] A sixth aspect provides a network device comprising: a transceiver, a memory, a processor, and a bus system. The transceiver, the memory, and the processor are connected via the bus system. The memory stores instructions, and the processor executes the instructions stored in the memory to control the transceiver to receive and / or transmit signals. When the processor executes the instructions stored in the memory, the execution causes the processor to perform a method of the second aspect or any possible implementation thereof.

[0042] In a seventh aspect, a computer-readable medium is provided for storing a computer program including instructions for performing the methods of the first aspect or any possible implementation thereof.

[0043] Eighthly, a computer-readable medium is provided for storing a computer program including instructions for performing the methods of the second aspect or any possible implementation thereof. Attached Figure Description

[0044] Figure 1 is a schematic flowchart of a method according to an embodiment of this application.

[0045] Figure 2 shows a flowchart of a method according to an embodiment of this application.

[0046] Figure 3 shows a schematic flowchart of a method according to an embodiment of this application.

[0047] Figure 4 shows a flowchart of a method according to an embodiment of this application.

[0048] Figure 5 is a schematic flowchart of a method according to an embodiment of this application.

[0049] Figure 6 shows a schematic flowchart of a method according to an embodiment of this application.

[0050] Figure 7 shows a schematic flowchart of a method according to another embodiment of this application.

[0051] Figure 8 shows a schematic block diagram of a terminal device 800 according to an embodiment of this application.

[0052] Figure 9 shows a schematic block diagram of a network device 900 according to an embodiment of this application.

[0053] Figure 10 is a schematic structural block diagram of a device 1000 according to another embodiment of this application.

[0054] Figure 11 is a schematic structural block diagram of a device 1100 according to another embodiment of this application. Detailed Implementation

[0055] The technical solutions in the embodiments of this application will now be described with reference to the accompanying drawings.

[0056] In this application embodiment, terminal equipment can refer to user equipment (UE), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, wireless communication equipment, user agent, or user device. Access terminal can be a cellular phone, cordless phone, Session Initiation Protocol (SIP) phone, Wireless Local Loop (WLL) station, Personal Digital Assistant (PDA), handheld device with wireless communication capabilities, computing device, or other processing device connected to a wireless modem, in-vehicle equipment, wearable device, or terminal equipment in future 5G networks, etc.

[0057] Furthermore, in the embodiments of this application, the base station can be a network device used to communicate with the terminal device. For example, it can be a base station (BTS) in a GSM or CDMA system, a base station (NodeB, NB) in a WCDMA system, an evolved Node B (eNB or eNodeB) in an LTE system, or the base station can be a relay station, access point, vehicle-mounted equipment, wearable device, or network-side equipment in a future 5G network.

[0058] Figure 1 is a schematic flowchart of a method according to an embodiment of this application. As shown in Figure 1, the executing entity of the method 100 is a terminal device. As shown in Figure 1, the method 100 includes:

[0059] Step 110: The terminal device determines the target method of at least one air interface technology.

[0060] Step 120: The terminal device communicates with the network device using at least one air interface technology in a targeted manner.

[0061] It should be understood that there may be more than one option for each air interface technology, but in actual communication, it is necessary to select one of the target methods of the air interface technology for network communication. Therefore, the terminal device needs to determine the target method of the air interface technology.

[0062] Optionally, as an embodiment of this application, the target mode of the above-mentioned at least one air interface technology includes at least one of the following modes: when the air interface technology is a random access mode, the target mode is one of the following: the random access mode of Long Term Evolution (LTE) system, or the simplified random access mode; and / or when the air interface technology is an uplink waveform, the target mode is one of the following: Cyclic Prefix-Orthogonal Frequency Division Multiplexing (CP-OFDM) mode, or Discrete Fourier Transform-Spread-Orthogonal Frequency Division Multiplexing (DFT-S-OFDM) mode;And / or when the air interface technology is uplink multiple access, the target method is one of the following: Sparse code multiple access (SCMA), Multi-user shared access (MUSA), Low code rate spreading, Frequency domain spreading, Non-orthogonal coded multiple access (NCMA), Non-orthogonal multiple access (NOMA), Pattern division multiple access (PDMA), Resource spread multiple access (RSMA), Interleave-Grid Multiple Access (IGMA), Low Density Spreading with Signature Vector Extension (LDS-SVE), or Low code rate and signature based shared access. Access methods include LSSA (Laser-Large Standard Access), Non-orthogonal coded access (NOCA), Interleave Division Multiple Access (IDMA), Repetition Division Multiple Access (RDMA), and Group Orthogonal Coded Access (GOCA).And / or when the air interface technology is a modulation scheme, the target scheme is one of the following: Quadrature Phase Shift Keying (QPSK), Quadrature Amplitude Modulation (QAM), 64-QAM, 256-QAM, Constellation mapping among subcarriers, Non-uniform QAM, Higher-order modulation in conjunction with MIMO, Coded modulations, Spatial modulation, Mappings of bits to symbol(s) Rotated-QAM up to BPSK (QPSK), Constellation interpolation. Interpolation); and / or when the air interface technology is a duplex mode, the target mode is one of the following: Frequency Division Duplexing (FDD), Time Division Duplexing (TDD), Dynamic Time Division Duplexing (TDD), Flexible Duplexing, Space Division Full-Duplexing, In-band Full-Duplexing; and / or when the air interface technology is the coding method for the uplink control channel of Enhanced Mobile Broadband (eMBB) services, the target mode is one of the following: Polar Codes coding, Repetition coding, Block coding; and / or when the air interface technology is an inactive uplink data transmission mode, the target mode is one of the following: Grant-free transmission, 2-step random access. RACH mode; and / or when the air interface technology is subcarrier spacing, the target mode is one of the following: 15kHz*2; nn is an integer; when the air interface technology is of type Slot, the target mode is one of the following: slot duration is 7 or 14 Orthogonal Frequency Division Multiplexing (OFDM) symbols, or mini-slot. The duration is m OFDM symbols, where m ∈ {1, 6}; and / or when the air interface technology is a transmission TTI length, the target mode is one of the following: {downlink short TTI length: 2 OFDM symbols, uplink short TTI length: 2 OFDM symbols}, {downlink short TTI length: 2 OFDM symbols, uplink short TTI length: 4 OFDM symbols}, {downlink short TTI length: 2 OFDM symbols, uplink short TTI length: 7 OFDM symbols}, {downlink short TTI length: 7 OFDM symbols, uplink short TTI length: 7 OFDM symbols}, {downlink short TTI length: 2 OFDM symbols, uplink short TTI length: 14 OFDM symbols}, {downlink short TTI length: 7 OFDM symbols, uplink short TTI length: 14 OFDM symbols}.

[0063] Optionally, as one embodiment of this application, the terminal device determines the target method of at least one air interface technology according to the communication protocol.

[0064] Alternatively, the terminal device may also determine the target method of at least one air interface technology through other means.

[0065] Optionally, as an embodiment of this application, the terminal device determines the target method of at least one air interface technology, including: the terminal device receiving a notification message sent by the network device, the notification message carrying the target method of the at least one air interface technology, the target method of the at least one air interface technology being determined by the network device from the optional methods of the at least one air interface technology.

[0066] Optionally, as an embodiment of this application, when the air interface technology is a random access method, the optional methods include: the random access method of Long Term Evolution (LTE) and the simplified random access method; and / or when the air interface technology is an uplink waveform, the optional methods include: Cyclic Prefix-Orthogonal Frequency Division Multiplexing (CP-OFDM) and Discrete Fourier Transform-Spread-Orthogonal Frequency Division Multiplexing (DFT-S-OFDM).And / or when the air interface technology is uplink multiple access, the available methods include: Sparse code multiple access (SCMA), Multi-user shared access (MUSA), Low code rate spreading, Frequency domain spreading, Non-orthogonal coded multiple access (NCMA), Non-orthogonal multiple access (NOMA), Pattern division multiple access (PDMA), Resource spread multiple access (RSMA), Interleave-Grid Multiple Access (IGMA), Low Density Spreading with Signature Vector Extension (LDS-SVE), and Low code rate and signature based shared access. Access methods include LSSA (Laser-Large Standard Access), Non-orthogonal coded access (NOCA), Interleave Division Multiple Access (IDMA), Repetition Division Multiple Access (RDMA), and Group Orthogonal Coded Access (GOCA).And / or when the air interface technology is a modulation scheme, the available schemes include: Quadrature Phase Shift Keying (QPSK), Quadrature Amplitude Modulation (QAM), 64-QAM, 256-QAM, Constellation mapping among subcarriers, Non-uniform QAM, Higher-order modulation in conjunction with MIMO, Coded modulations, Spatial modulation, Mappings of bits to symbol(s) Rotated-QAM up to BPSK (QPSK), and Constellation interpolation. Interpolation); and / or when the air interface technology is a duplex mode, the available modes include: Frequency Division Duplexing (FDD), Time Division Duplexing (TDD), Dynamic Time Division Duplexing (TDD), Flexible Duplexing, Space Division Full-Duplexing, and In-band Full-Duplexing; and / or when the air interface technology is the coding method for the uplink control channel of Enhanced Mobile Broadband (eMBB) services, the target mode is one of the following: Polar Codes coding, Repetition coding, and Block coding; and / or when the air interface technology is an inactive uplink data transmission mode, the available modes include: Grant-free transmission, and 2-step random access. RACH mode; and / or when the air interface technology is subcarrier spacing, the target mode is one of the following: 15kHz*2; nn is an integer; when the air interface technology is of type Slot, the target mode is one of the following: slot duration is 7 or 14 Orthogonal Frequency Division Multiplexing (OFDM) symbols, or mini-slot. The duration is m OFDM symbols, where m ∈ {1, 6}; and / or when the air interface technology is a transmission TTI length, the target mode is one of the following: {downlink short TTI length: 2 OFDM symbols, uplink short TTI length: 2 OFDM symbols}, {downlink short TTI length: 2 OFDM symbols, uplink short TTI length: 4 OFDM symbols}, {downlink short TTI length: 2 OFDM symbols, uplink short TTI length: 7 OFDM symbols}, {downlink short TTI length: 7 OFDM symbols, uplink short TTI length: 7 OFDM symbols}, {downlink short TTI length: 2 OFDM symbols, uplink short TTI length: 14 OFDM symbols}, {downlink short TTI length: 7 OFDM symbols, uplink short TTI length: 14 OFDM symbols}.

[0067] It should be understood that each of the air interface technologies listed above is an optional method of the air interface technology. For example, when the air interface technology is a random access method, the optional methods include: LTE random access method and simplified random access method. The target method of the air interface technology is LTE random access method, or the target method of the air interface technology is simplified random access method.

[0068] Therefore, the terminal device can determine the target air interface technology to be used in actual communication from a variety of options based on the notification message sent by the network device. It can flexibly adopt a more suitable air interface technology according to the actual communication situation to adapt to different communication scenarios.

[0069] Optionally, as an embodiment of this application, the notification message is a system message sent by the network device, and the target method of using at least one air interface technology to communicate with the network device includes: initially accessing the network device using the target method of using at least one air interface technology.

[0070] Figure 2 shows a flowchart of a method according to an embodiment of this application. As shown in Figure 2, the method includes:

[0071] Step 210: The base station sends a system information message to the UE. This system information message can be sent to the UE in the form of a broadcast. The system information message carries the target mode of the air interface technology selected by the network device.

[0072] Step 220: The UE performs initial random access according to the target mode of the air interface technology selected by the network device.

[0073] Specifically, for example, when the target mode of the uplink waveform selected in the system message broadcast by the base station is Discrete Fourier Transform-Spread-Orthogonal Frequency Division Multiplexing (DFT-S-OFDM), then the UE will use the DFT-S-OFDM method for initial random access to access the network device.

[0074] Specifically, the base station will determine the target mode of at least one air interface technology from the options of at least one air interface technology according to the actual communication scenario. For example, before the UE initially accesses the base station randomly, there is no information about the UE, and it is unknown where the UE is located in the cell or what the environment of the UE is. Therefore, the base station will select the most robust waveform mode for the UE, namely the DFT 50 ...

[0075] Therefore, based on the notification messages sent by the network device, the terminal device can determine the target air interface technology to be used when initially accessing the system from a variety of available air interface technologies. It can flexibly adopt a more suitable air interface technology according to the actual communication situation to adapt to different communication scenarios.

[0076] Optionally, as an embodiment of this application, the notification message is the initial random access message 2, and the target method of using the at least one air interface technology to communicate with the network device includes: sending the initial random access message 3 to the network device using the target method of the at least one air interface technology.

[0077] It should be understood that the initial random access message 2 can not only determine the target mode of at least one air interface technology used in the initial random access message 3, but also specify the target mode of the air interface technology used in subsequent signaling or data interaction with network devices. This application does not impose any limitations on this.

[0078] Specifically, Figure 3 shows a schematic flowchart of a method according to an embodiment of this application. It should be understood that this process can also be seen as a further refinement of step 220 in Figure 2. As shown in Figure 3, the method includes:

[0079] Step 221, the UE sends a preamble to the base station. It should be understood that the UE can use the method of the embodiment shown in Figure 2 to determine the target mode of the air interface technology for initial random access and send the preamble, wherein the preamble is also the initial random access message 1.

[0080] Step 222: The base station determines the target mode of the air interface technology. In other words, the network device can reselect the target mode of the air interface technology for communication between the UE and the base station based on changes in the network environment, transmission services, etc. In other words, the base station further determines the target mode of at least one air interface technology from the available modes of at least one air interface technology according to the current communication scenario.

[0081] Step 223: The base station sends message 2 to the UE. The initial random access message 2 carries the target mode of at least one air interface technology. That is, the base station notifies the UE of the target mode of at least one air interface technology through message 2 so that the UE can transmit subsequent data or signaling according to the target mode of at least one air interface technology carried in the message 2.

[0082] Step 224: The UE sends message 3 to the base station, that is, it sends message 3 to the base station using the target method among at least one air interface technology selected by the base station.

[0083] It should be understood that if the UE's initial random access method adopts the existing LTE four-step random access method, then according to the Preamble ID in Message 2, all UEs using the Preamble in Message 1 will receive Message 2. This means that these UEs will receive the target air interface technology reselected by the base station, and will then perform subsequent transmissions according to the reselected option. If the UE's initial random access method adopts the simplified two-step random access method, Message 1 will carry the UE's identifier. Then, Message 2 will only be sent to the UE corresponding to the identifier carried in Message 1. This means that only this UE will receive the target air interface technology reselected by the base station and will perform subsequent transmissions according to the reselected option.

[0084] Optionally, as an embodiment of this application, the target mode of at least one air interface technology carried in the initial random access message 2 includes the uplink waveform mode. The above-mentioned sending the initial random access message 3 to the network device using the target mode of at least one air interface technology includes: determining the RB allocation field content value in the initial random access message 2; determining the resource location of the initial random access message 3 according to whether the uplink waveform mode is Discrete Fourier Transform Extended Orthogonal Frequency Division Multiplexing (DFT-s-OFDM) or Cyclic Prefix Orthogonal Frequency Division Multiplexing (CP-OFDM), wherein the resource location of the initial random access message 3 determined when the uplink waveform mode is DFT-s-OFDM is different from the resource location of the initial random access message 3 determined when the uplink waveform mode is CP-OFDM; and sending the initial random access message 3 to the network device at the determined resource location.

[0085] In other words, the UE determines the resource location of the initial random access message 3 based on the RB allocation field content value in the uplink grant (UL grant) in message 2. When the RB allocation field content value is fixed, the UE determines the resource location of message 3 based on whether the uplink waveform is DFT-s-OFDM or CP-OFDM. Generally speaking, the resource location of message 3 is determined differently depending on the uplink waveform method. This is because DFT-s-OFDM always indicates resources that are continuous in the frequency domain, while CP-OFDM can indicate resources that are not continuous in the frequency domain.

[0086] Step 225: The base station sends a Connection Resolution message to the UE, which is also known as the Initial Random Access message 4.

[0087] Furthermore, the UE performs subsequent data transmission and / or signaling transmission with the base station according to the target mode of the air interface technology reselected by the base station.

[0088] When the air interface technology is uplink waveform, the available modes include CP-OFDM and DFT-s-OFDM. In this case, the base station can determine which cell the current UE is in based on message 1. If it is in a small cell, the CP-OFDM waveform mode is selected for the UE. If it is in a large cell, the base station can roughly determine whether the UE is in the central or edge area of ​​the large cell based on the signal quality of message 1. If it is in the central area, the CP-OFDM waveform mode is selected for the UE. If it is in the edge area, the DFT-s-OFDM waveform mode is selected for the UE.

[0089] Therefore, the terminal device can determine the target air interface technology to be used when initially accessing the system from a variety of options based on the notification message sent by the network device. It can flexibly adopt a more suitable air interface technology according to the actual communication situation to adapt to different communication scenarios.

[0090] Optionally, as one embodiment of this application, the network device described is the target network device that the terminal device expects to switch to, and the notification message is a HO command.

[0091] In other words, when the source network device to which the UE accesses determines that the UE is about to switch to the target network device and sends a handover request message to the target network device, and the target network device agrees to the request, the target network device will send an HO command message to the UE, which carries the target mode of at least one air interface technology selected by the target network device.

[0092] Specifically, when the source base station determines that the UE is about to switch to the target base station based on the UE's measurement report, it will send a handover request message to the target network device. If the target network device agrees to the request, before the UE switches to the target base station, the target base station will select at least one target mode of air interface technology from the optional modes of at least one air interface technology based on the UE capability information and the UE's measurement results in the received handover request message, and notify the UE through a HO command message.

[0093] For example, if the target base station decides to hand over the UE to a small cell below it based on the UE capability information in the received Handover Request message and the UE's measurement results, then it will determine the CP OFDM waveform mode to be used for the UE in that target cell; if the target base station decides to hand over the UE to a large cell below it, then it will determine the most robust DFT S OFDM waveform mode to be used for the UE in that target cell.

[0094] Figure 4 shows a flowchart of a method according to an embodiment of this application. As shown in Figure 4, the interaction process between the UE and the source base station and the target base station during handover is illustrated in detail, including:

[0095] Step 401: The target base station determines the target method of the air interface technology used by the UE.

[0096] Step 402: The target base station sends a Handover Request Acknowledgement message to the source base station. The Handover Request Acknowledgement message carries an HO command, which can be used to indicate the target mode of the air interface technology selected by the target base station.

[0097] Step 403: The source base station sends an RRC connection reconfiguration message to the UE, which also carries the aforementioned HO command.

[0098] Step 404: The UE communicates with the target base station and uses the target method of the air interface technology selected by the target base station.

[0099] Therefore, the terminal device can determine the target air interface technology to be used when switching network devices from a variety of options based on the notification message sent by the network device. It can flexibly adopt a more suitable air interface technology according to the actual communication situation to adapt to different communication scenarios.

[0100] Optionally, as an embodiment of this application, after the terminal device initially accesses the network device randomly, the notification message is one of the following messages: physical layer message, MAC message, or RRC message.

[0101] In other words, regardless of the method used by the UE, after the initial random access to the network device, the base station can redetermine the method by which the UE uses air interface technology based on the UE's capabilities and / or the environment in which the UE is located.

[0102] Specifically, Figure 5 is a schematic flowchart of a method according to an embodiment of this application. Figure 5 shows that after the UE initially randomly accesses the network device, the network device reselects the air interface technology and sends it to the UE. The UE then communicates with the network device according to the target method of the air interface technology. As shown in Figure 5, the method includes:

[0103] Step 501: The base station determines the target method of the air interface technology used by the UE.

[0104] Step 502: The base station sends one of the following messages to the UE: PHY message, MAC message, or RRC message. Regardless of which message the base station specifically sends to the UE, the message carries the target mode of at least one air interface technology selected by the base station for the UE.

[0105] Step 503: The UE communicates with the network device.

[0106] Therefore, based on the notification messages sent by the network device, the terminal device can determine the target air interface technology to be used when communicating with the network device from a variety of available air interface technologies. It can flexibly adopt a more suitable air interface technology method according to the actual communication situation to adapt to different communication scenarios.

[0107] Optionally, as an embodiment of this application, the terminal device determines the target mode of at least one air interface technology, including: the terminal device selects the target mode of the at least one air interface technology from the optional modes of the at least one air interface technology according to the air interface technology selection strategy.

[0108] In other words, the terminal device can select at least one air interface technology in an optional manner according to the air interface technology selection strategy, and communicate with the network device using the target manner of the selected at least one air interface technology.

[0109] It should be understood that the UE can determine the target mode of an air interface technology from among the available modes of at least one air interface technology based on the current network environment, its own capabilities, and the services that need to be transmitted, using the air interface technology selection strategy.

[0110] Optionally, as an embodiment of this application, when the UE needs to report eMBB service uplink control information, the encoding method is determined based on the condition that the length of the uplink control information to be reported meets. The specific process is as follows: The base station broadcasts or agrees on a threshold for the length of the uplink control information using Polar codes in the system message; when the length of the uplink control information to be reported by the UE is greater than the threshold, the uplink control information is channel-coded using Polar codes before transmission; otherwise, other methods are used; when the UE needs to report eMBB service uplink control information, the UE selects a suitable channel encoding method based on the length of the uplink control information to be reported; the UE uses this encoding method to channel-code the uplink control information before transmission. It should be understood that the base station infers the channel encoding method from the received data information.

[0111] Optionally, as an embodiment of this application, when a UE in an inactive state needs to transmit uplink data, the transmission method is determined based on the current environment of the UE and the conditions that the amount of uplink data to be transmitted meets: the base station broadcasts in the system message or agrees in the protocol on the conditions for using the grant-free transmission method, for example, based on the cell downlink signal path loss threshold, whether the UE is still in the cell where it entered the inactive state (third state), or the threshold value of the amount of uplink data that the UE needs to transmit; if the cell downlink signal path loss detected by the UE is less than the set threshold, or if the UE is still in the cell where it entered the inactive state and the amount of uplink data that the UE needs to transmit is less than the set threshold, the grant-free transmission method is used; otherwise, the 2-step RACH method is used; when a UE in an inactive state needs to transmit uplink data, a suitable uplink data transmission method is selected based on the current environment of the UE and the amount of uplink data to be transmitted; the UE uses the determined transmission method to transmit the uplink data.

[0112] It should be understood that the selection strategy for air interface technology may vary depending on the application scenario, and the embodiments in this application do not limit it.

[0113] Optionally, as an embodiment of this application, the above method further includes: a terminal device receiving a system message sent by the network device, wherein the system message carries the air interface technology selection strategy.

[0114] It should be understood that the air interface technology selection strategy can also carry multiple air interface technologies, as well as the optional mode of each air interface technology, so that the UE can select the target mode of the air interface technology according to the air interface technology strategy.

[0115] In other words, the UE can select the target method of air interface technology based on the communication protocol or the air interface technology selection strategy issued by the base station.

[0116] Optionally, as an embodiment of this application, the target mode of using the at least one air interface technology to communicate with the network device includes: sending a selection notification message to the network device, wherein the selection notification message is used to indicate that the terminal device will use the at least one target mode to communicate with the network device.

[0117] In other words, once the UE selects the target air interface technology, it needs to inform the network device which air interface technology has been selected.

[0118] Specifically, Figure 6 shows a schematic flowchart of a method according to an embodiment of this application. As shown in Figure 7, the method includes:

[0119] Step 601: Send the air interface technology selection strategy to the UE.

[0120] Step 602: Based on the current network environment, its own capabilities, and the services that need to be transmitted, the UE selects the target air interface technology from the available options using the air interface technology selection strategy.

[0121] Step 603: The UE sends a notification message to the UE via dedicated information, which carries the target method of the air interface technology selected by the UE.

[0122] Step 604: The UE communicates with the base station according to the target method of the selected air interface technology.

[0123] Therefore, based on the notification messages sent by the network device, the terminal device can determine the target air interface technology to be used when communicating with the network device from a variety of available air interface technologies. It can flexibly adopt a more suitable air interface technology method according to the actual communication situation to adapt to different communication scenarios.

[0124] Figure 7 shows a schematic flowchart of a method according to another embodiment of this application. The subject executing this method can be a network device, such as a base station. As shown in Figure 7, the method 700 includes:

[0125] Step 710: The network device determines the target method for at least one air interface technology.

[0126] Step 720: The network device communicates with the terminal device using the target method of at least one of the above-mentioned air interface technologies.

[0127] It should be understood that at least one air interface technology has the same target method as the air interface technology in the embodiment shown in Figure 1, and will not be described again here.

[0128] Therefore, the method provided in this application embodiment can determine the target mode of air interface technology used in actual communication from a variety of optional air interface technologies.

[0129] Optionally, as an embodiment of this application, the network device determines the target mode of at least one air interface technology, including: the network device determining the target mode of the at least one air interface technology from the optional modes of the at least one air interface technology; the network device sending a notification message to the terminal device, the notification message carrying the target mode of the at least one air interface technology.

[0130] Optionally, as an embodiment of this application, the notification message is a system message, so that the terminal device can initially and randomly access the network device using the target method of the at least one air interface technology.

[0131] Optionally, as an embodiment of this application, the notification message is an initial random access message 2, so that the terminal device sends an initial random access message 3 to the network device according to the target method of the at least one air interface technology.

[0132] Optionally, as an embodiment of this application, the network device is the target network device that the terminal device expects to switch to, and the notification message is a HO command message.

[0133] Optionally, as an embodiment of this application, after the terminal device accesses the network device, the notification message is one of the following messages: physical layer message, media access control (MAC) message, or radio resource control (RRC) message.

[0134] Therefore, based on the notification messages sent by the network device, the terminal device can determine the target air interface technology to be used when communicating with the network device from a variety of available air interface technologies. It can flexibly adopt a more suitable air interface technology method according to the actual communication situation to adapt to different communication scenarios.

[0135] The flow of the method of the embodiment of this application has been described in detail above with reference to Figures 1 to 7. The device of the embodiment of this application will be described in detail below with reference to Figures 8 to 11.

[0136] Figure 8 shows a schematic block diagram of a terminal device 800 according to an embodiment of this application. The terminal device 800 is capable of performing the various steps executed by the terminal device in the methods of Figures 1 to 7; to avoid repetition, these steps will not be described in detail here. The terminal device 800 includes:

[0137] Determining unit 810, shown, is used to determine the target mode of at least one air interface technology.

[0138] The transmitting unit 820 is used to communicate with the network device using the target method of the at least one air interface technology.

[0139] Therefore, the terminal device provided in this application embodiment can determine the target mode of air interface technology used in actual communication from a variety of optional air interface technologies.

[0140] Figure 9 shows a schematic block diagram of a network device 900 according to an embodiment of this application. The network device 900 is capable of performing the various steps executed by the network device in the methods of Figures 1 to 7; to avoid repetition, these steps will not be described in detail here. The network device 900 includes:

[0141] Determining unit 910, the determining unit 910 being used for a target mode of at least one air interface technology.

[0142] The transmitting unit 920 is used to communicate with the terminal device using the target method of the at least one air interface technology.

[0143] Therefore, the network device provided in this application embodiment can determine the target mode of air interface technology used in actual communication from a variety of optional air interface technologies.

[0144] Figure 10 is a schematic structural block diagram of a device 1000 according to another embodiment of this application. It should be understood that the device 1000 is capable of performing the various steps executed by the terminal device in the methods of Figures 1 to 7; to avoid repetition, these steps will not be described in detail here. The device 1000 includes:

[0145] Memory 1010 is used to store programs;

[0146] Transceiver 1020 is used for communication with other devices;

[0147] Processor 1030 is configured to execute a program in memory 1010. Processor 1030 is connected to memory 1010 and transceiver 1020 respectively. Processor 1030 is configured to execute the instructions stored in memory 1010 to perform the following steps when executing the instructions: determining a target mode of at least one air interface technology; the terminal device using the target mode of the at least one air interface technology to communicate with the network device.

[0148] Therefore, the apparatus provided in this application embodiment is able to determine the target mode of air interface technology used in actual communication from a variety of optional modes of air interface technology.

[0149] Figure 11 is a schematic structural block diagram of a device 1100 according to another embodiment of this application. It should be understood that the device 1100 is capable of performing the various steps of the methods shown in Figures 1 to 7 performed by the network device; to avoid repetition, these steps will not be described in detail here. The device 1100 includes:

[0150] Memory 1110 is used to store programs;

[0151] Transceiver 1120 is used for communication with other devices;

[0152] Processor 1130 is configured to execute a program in memory 1110. Processor 1130 is connected to memory 1110 and transceiver 1120 respectively. Processor 1130 is configured to execute the instructions stored in memory 1110 to perform the following steps when executing the instructions: determining a target mode of at least one air interface technology; and communicating with a terminal device using the target mode of at least one air interface technology.

[0153] Therefore, the apparatus provided in this application embodiment is able to determine the target mode of air interface technology used in actual communication from a variety of optional modes of air interface technology.

[0154] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0155] Those skilled in the art will understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0156] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between apparatuses or units may be electrical, mechanical, or other forms.

[0157] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0158] In addition, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0159] If the aforementioned functions are implemented as software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or a portion of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0160] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.