Wireless communication methods, wireless communication devices, and communication equipment

Abstract

This disclosure provides wireless communication methods and apparatus, and communication equipment. The wireless communication method includes a network device transmitting first information to a terminal device, the first information being used to indicate whether the network device supports receiving or transmitting a first transmission based on a first transmission scheme before dedicated parameters are set on the terminal device, the first transmission scheme being used for coverage enhancement.

Description

[Technical Field]

[0001] This disclosure relates to the field of mobile communications, and more particularly to wireless communication methods, wireless communication devices, and communication equipment. [Background technology]

[0002] In communication scenarios where coverage performance is limited, such as non-terrestrial network (NTN) systems, uplink and downlink transmissions that do not support coverage enhancement technologies may fail to meet coverage requirements. In particular, if uplink and downlink transmissions cannot be performed successfully before terminal-specific parameter configuration, terminals may be unable to access the network, which has a significant impact on system performance. [Overview of the project]

[0003] Embodiments of this disclosure provide wireless communication methods, wireless communication devices, and communication equipment.

[0004] Embodiments of the present disclosure provide a wireless communication method, the wireless communication method comprising a network device transmitting first information to a terminal device, the first information being used to indicate whether the network device supports receiving or transmitting a first transmission based on a first transmission scheme before a dedicated parameter is set on the terminal device, the first transmission scheme being used for coverage enhancement.

[0005] Embodiments of the present disclosure provide a wireless communication method, the wireless communication method comprising a terminal device receiving first information transmitted from a network device, the first information being used to indicate whether the network device supports receiving or transmitting a first transmission based on a first transmission scheme before a dedicated parameter is set for the terminal device, the first transmission scheme being used for coverage enhancement.

[0006] Embodiments of the present disclosure provide a wireless communication device which is applied to a network device and includes a transmitting unit which is configured for the network device to transmit first information to a terminal device which is used to indicate whether the network device supports receiving or transmitting a first transmission based on a first transmission scheme before a dedicated parameter is set on the terminal device which is used for coverage enhancement.

[0007] Embodiments of the present disclosure provide a wireless communication device which is applied to a terminal device and includes a receiving unit which is configured to receive first information transmitted by the terminal device from a network device which is used to indicate whether the network device supports receiving or transmitting a first transmission based on a first transmission scheme before specific parameters are set for the terminal device which is used for coverage enhancement.

[0008] Embodiments of the present disclosure provide a communication device, which is a terminal or network device in the aforementioned technical solution, and includes a processor and memory. The memory is used to store computer programs, and the processor is used to call and execute the computer programs stored in the memory and to perform the wireless communication method described above.

[0009] Embodiments of this disclosure provide a chip used to implement the above-described wireless communication method. Specifically, the chip includes a processor which calls and executes a computer program from memory, causing a device on which the chip is installed to perform the above-described wireless communication method.

[0010] Embodiments of the present disclosure provide a computer-readable storage medium used to store a computer program, the computer program causing a computer to perform the above-described wireless communication method.

[0011] According to embodiments of the present disclosure, a computer program product is provided, which includes computer program instructions, which cause a computer to perform the above-described wireless communication method.

[0012] According to embodiments of this disclosure, a computer program is provided which, when executed on a computer, causes the computer to perform the above-described wireless communication method.

[0013] In embodiments of the present disclosure, if a network device transmits first information to a terminal device, and the first information indicates that the network device supports receiving or transmitting a first transmission based on a first transmission method for enhanced coverage before dedicated parameters are set on the terminal device, the uplink and downlink coverage performance of the terminal device can be improved before dedicated parameters are set on the terminal device, thereby avoiding situations in which the terminal device cannot access the network. [Brief explanation of the drawing]

[0014] [Figure 1] This is a schematic diagram of an application scenario of the embodiments of this disclosure. [Figure 2] This is a schematic diagram of the architecture of another communication system according to an embodiment of the present disclosure. [Figure 3] This is a schematic diagram of the architecture of another communication system according to an embodiment of the present disclosure. [Figure 4] This is a schematic diagram of an NTN scenario based on a transparent payload satellite according to an embodiment of the disclosure. [Figure 5]Schematic diagram of an NTN scenario based on a regenerative payload satellite according to an embodiment of the present disclosure. [Figure 6] Wireless communication method 1 according to an embodiment of the present disclosure. [Figure 7] Wireless communication method 2 according to an embodiment of the present disclosure. [Figure 8] Wireless communication method 3 according to an embodiment of the present disclosure. [Figure 9] Wireless communication method 4 according to an embodiment of the present disclosure. [Figure 10] Wireless communication method 5 according to an embodiment of the present disclosure. [Figure 11] Wireless communication method 6 according to an embodiment of the present disclosure. [Figure 12] Wireless communication method 7 according to an embodiment of the present disclosure. [Figure 13] PRACH preamble related to PDSCH repeated transmission provided by the first information according to an embodiment of the present disclosure. [Figure 14] Wireless communication method 8 according to an embodiment of the present disclosure. [Figure 15] Wireless communication method 9 according to an embodiment of the present disclosure. [Figure 16] PRACH preamble related to TBS scaling of PDSCH provided by the first information according to an embodiment of the present disclosure. [Figure 17] Schematic structural diagram of a selective wireless communication device according to an embodiment of the present disclosure. [Figure 18] Schematic structural diagram of a selective wireless communication device according to an embodiment of the present disclosure. [Figure 19] Schematic structural diagram of a communication device according to an embodiment of the present disclosure. [Figure 20] Schematic structural diagram of a chip according to an embodiment of the present disclosure. [Figure 21] Schematic block diagram of a communication system according to an embodiment of the present disclosure.

Mode for Carrying Out the Invention

[0015] The drawings described herein are used to provide a further understanding of the Disclosure and constitute part of the Disclosure. The schematic embodiments of the Disclosure and their descriptions are for illustrative purposes only and do not constitute any unreasonable limitation on the Disclosure.

[0016] In embodiments of this disclosure, technical solutions are described below with reference to the drawings in the embodiments of this disclosure. It is clear that the embodiments described are only a part of, and not all, embodiments of this disclosure. All other embodiments that can be obtained without creative effort by a person skilled in the art based on the embodiments of this disclosure should be included in the scope of protection of this disclosure.

[0017] Figure 1 is a schematic diagram of an application scenario of an embodiment of the present disclosure.

[0018] As shown in Figure 1, the communication system 100 may include a terminal device 110 and a network device 120. The network device 120 can communicate with the terminal device 110 via an air interface. Multi-service transmission is supported between the terminal device 110 and the network device 120.

[0019] The embodiments of this disclosure illustrate communication system 100, but it should be understood that they are not limited thereto. That is, the technical solutions of the embodiments of this disclosure can be applied to a variety of communication systems, including Long Term Evolution (LTE) systems, LTE Time Division Duplex (TDD), Universal Mobile Telecommunication System (UMTS), Internet of Things (IoT) systems, Narrow Band Internet of Things (NB-IoT) systems, Enhanced Machine-Type Communications (eMTC) systems, 5th generation (5G) communication systems (also known as New Radio (NR) communication systems), or future communication systems.

[0020] In the communication system 100 shown in Figure 1, the network device 120 can be an access network device that communicates with terminal devices 110. The access network device provides communication coverage to a specific geographic area and can communicate with terminal devices 110 (e.g., user equipment (UE)) located within this coverage area.

[0021] The network device 120 may be an Evolutionary Node B (eNB or eNodeB) of an LTE system, or a Next Generation Radio Access Network (NG RAN) device, or an NR system base station (gNB), or a radio controller for a Cloud Radio Access Network (CRAN). Alternatively, the network device 120 may be a relay station, access point, in-vehicle device, wearable device, hub, switch, bridge, router, or network device within a future Evolutionary Public Land Mobile Network (PLMN).

[0022] The terminal device 110 is any terminal device, including, but not limited to, a terminal device connected to the network device 120 or other terminal devices by wire or wireless connection.

[0023] For example, terminal device 110 can refer to an access terminal, UE, user unit, user station, mobile station, mobile site, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent, or user device. An access terminal can be a mobile phone, cordless phone, Session Initiation Protocol (SIP) phone, IoT device, satellite mobile terminal, Wireless Local Loop (WLL) station, Personal Digital Assistant (PDA), mobile terminal with wireless communication capabilities, computing device, or other processing device connected to a wireless modem, in-vehicle device, wearable device, terminal device for a 5G network, or terminal device for a future advanced network.

[0024] The terminal device 110 can be used for device-to-device (D2D) communication.

[0025] The wireless communication system 100 may also include a core network device 130 that communicates with a base station. The core network device 130 may be a 5G core network (5GC) device, such as an Access and Mobility Management Function (AMF), Authentication Server Function (AUSF), User Plane Function (UPF), and Session Management Function (SMF). Optionally, the core network device 130 may also be an evolved packet core (EPC) device for an LTE network, such as a Session Management Function + Core Packet Gateway (SMF+PGW-C) device. It should be understood that the SMF+PGW-C can implement both SMF and PGW-C functions simultaneously. In the network evolution process, the above core network devices may be referred to by other names, or the functions of the core network may be divided to form new network entities, and the embodiments of this disclosure are not limited thereto.

[0026] Communication can also be achieved by establishing connections between the functional units of the communication system 100 via a next-generation network (NG) interface.

[0027] For example, terminal equipment can establish an air interface connection with access network equipment via the Uu interface and is used to transmit user plane data and control plane signaling. Terminal equipment can establish a control plane signaling connection with AMF via NG interface 1 (called N1). Access network equipment such as next-generation radio access base stations (gNBs) can establish a user plane data connection with UPF via NG interface 3 (called N3). Access network equipment can establish a control plane signaling connection with AMF via NG interface 2 (called N2). UPF can establish a control plane signaling connection with SMF via NG interface 4 (called N4). UPF can exchange user plane data with the data network via NG interface 6 (called N6). AMF can establish a control plane signaling connection with SMF via NG interface 11 (called N11). SMF can establish a control plane signaling connection with PCF via NG interface 7 (called N7).

[0028] Figure 1 illustrates one base station, one core network device, and two terminal devices. Optionally, this wireless communication system 100 may include multiple base stations, and each base station's coverage may include a number of other terminal devices. Embodiments of this disclosure are not limited thereto.

[0029] 3GPP is researching Non-Terrestrial Network (NTN) technology. NTN typically uses satellite communication methods to provide communication services to terrestrial users. Compared to terrestrial cellular network communication, satellite communication has many unique advantages. Firstly, satellite communication is not limited by the geographical location of the user. For example, conventional land-based communication cannot cover areas where communication equipment cannot be installed, such as oceans, mountainous regions, deserts, or areas where communication coverage is not provided due to sparse populations. However, with satellite communication, one satellite can cover a vast terrestrial area, and because satellites orbit the Earth, it is theoretically possible to cover every corner of the Earth with satellite communication. Secondly, satellite communication has great social value. Because satellite communication can cover remote mountainous regions and poor countries and regions at low cost, people in these regions can use advanced voice communication and mobile internet technologies, helping to reduce the digital divide with developed regions and promote the development of these regions. Thirdly, satellite communication can cover long distances without a significant increase in communication costs even as the communication distance increases. Finally, satellite communications offer high stability and are unaffected by natural disasters.

[0030] NTN technology can be combined with various communication systems. For example, NTN technology can be combined with NR systems to form an NR-NTN system. Another example is that NTN technology can be combined with IoT (Internet of Things) systems to form an IoT-NTN system. As an example, an IoT-NTN system can include NB-IoT-NTN systems and eMTC-NTN systems.

[0031] Figure 2 is a schematic diagram of the architecture of another communication system according to an embodiment of the present disclosure.

[0032] As shown in Figure 2, the system includes a terminal device 1101 and a satellite 1102, and wireless communication can be performed between the terminal device 1101 and the satellite 1102. The network formed between the terminal device 1101 and the satellite 1102 is also called an NTN. In the communication system architecture shown in Figure 2, the satellite 1102 can function as a base station and communicate directly with the terminal device 1101 and the satellite 1102. In the communication system architecture shown in Figure 2, the satellite 1102 can be called a network device. In some embodiments of this disclosure, the communication system may include a plurality of network devices 1102, and the coverage of each network device 1102 may include a number of other terminal devices. Embodiments of this disclosure are not limited thereto.

[0033] Figure 3 is a schematic diagram of the architecture of another communication system according to an embodiment of the present disclosure.

[0034] As shown in Figure 3, the system includes a terminal device 1201, a satellite 1202, and a base station 1203, which can communicate wirelessly between the terminal device 1201 and the satellite 1202, and between the satellite 1202 and the base station 1203. The network formed between the terminal device 1201, the satellite 1202, and the base station 1203 is also called an NTN. In the communication system architecture shown in Figure 3, the satellite 1202 may not have base station functionality, and communication between the terminal device 1201 and the base station 1203 must be relayed via the satellite 1202. In the communication system architecture shown in Figure 3, the base station 1203 may be referred to as a network device. In some embodiments of this disclosure, the communication system may include a plurality of network devices 1203, and each network device 1203 may include a number of other terminal devices within its coverage. Embodiments of this disclosure are not limited thereto. The network device 1203 may be the network device 120 shown in Figure 1.

[0035] It should be understood that the above-mentioned satellites 1102 or 1202 include, but are not limited to, low-earth orbit (LEO) satellites, medium-earth orbit (MEO) satellites, geostationary Earth orbit (GEO) satellites, and high-elliptical orbit (HEO) satellites. Satellites can cover the ground using multiple beams. For example, a single satellite can cover the ground by forming tens to hundreds of beams. In other words, each satellite beam can cover a ground area with a diameter ranging from tens to hundreds of kilometers, thereby ensuring satellite coverage and improving the overall system capacity of the satellite communication system.

[0036] For example, LEO satellites have an altitude range of 500 km to 1500 km, a corresponding orbital period of approximately 1.5 to 2 hours, a signal propagation delay of typically less than 20 ms in single-hop communication between users, and a maximum satellite visibility time of 20 minutes. Due to the short signal propagation distance and low link loss of LEO satellites, the transmit power requirements of user terminals are not high. GEO satellites reach an orbital altitude of 35786 km, have a rotation period of 24 hours around the Earth, and a signal propagation delay of typically 250 ms in single-hop communication between users.

[0037] To ensure overall satellite coverage of a satellite communication system and improve system capacity, satellites use multiple beams to cover the ground, with a single satellite forming tens to hundreds of beams to cover the ground. A single satellite beam can cover a ground area with a diameter of tens to hundreds of kilometers.

[0038] Figures 1 to 3 are merely illustrative examples of systems to which this disclosure applies, and it should be noted that, of course, the methods shown in the embodiments of this disclosure can be applied to other systems as well. Also, the terms “system” and “network” in this disclosure are often used interchangeably. The terms “and / or” in this disclosure simply describe the relationship between two related objects, indicating that three relationships may exist. For example, “A and / or B” can indicate three situations: “only A exists,” “A and B exist simultaneously,” or “only B exists.” Also, the character “ / ” in this disclosure usually indicates that the preceding and following related objects are in an “or” relationship. It should also be understood that the term “directs” as used in embodiments of this disclosure can indicate direct, indirect, or related relationships. For example, “A directs B” can indicate that A directly directs B, e.g., B can be obtained through A, or that A indirectly directs B, e.g., A directs C and B can be obtained through C, or that there is some kind of related relationship between A and B. The term “corresponding” as used in embodiments of this disclosure can indicate a direct or indirect correspondence between two things, or a related relationship, and can refer to relationships such as a directive-directed relationship or a configured-configured relationship. Furthermore, the terms “predefined” or “predefined rules” as used in embodiments of this disclosure can be achieved by pre-storing corresponding codes, tables, or other methods in a device (including, for example, terminal devices and network devices) that can be used to direct related information. This disclosure does not limit its specific embodiments. For example, “predefined” can mean defined by a protocol. Also, the term “protocol” as used in embodiments of this disclosure can refer to standard protocols in the communications field, and can include, for example, LTE protocols, NR protocols, and related protocols applicable to future communications systems, but is not limited to these.

[0039] Satellites can be classified into two types based on the functions they provide: transparent payloads and regenerative payloads. Transparent payload satellites provide only radio frequency filtering, frequency conversion, and amplification functions, and only provide transparent transmission of signals without altering the waveform signals being transmitted. Regenerative payload satellites, in addition to radio frequency filtering, frequency conversion, and amplification functions, can also provide demodulation / decoding, routing / conversion, and coding / modulation functions, and may have some or all of the functions of a base station.

[0040] NTN may include one or more gateways used for communication between satellites and terminals.

[0041] Figures 4 and 5 show schematic diagrams of NTN scenarios based on a transparent payload satellite and a regenerative payload satellite, respectively.

[0042] As shown in Figure 4, in the NTN scenario based on a transparent payload satellite, communication can be conducted between the gateway and the satellite via a feeder link, and between the satellite and the terminal via a service link. As shown in Figure 5, in the NTN scenario based on a regenerative payload satellite, communication can be conducted between satellites via an InterStar link, between the gateway and the satellite via a feeder link, and between the satellite and the terminal via a service link.

[0043] In the embodiments of this disclosure, the relevant technologies of the embodiments of this disclosure are described below to facilitate understanding of the technical solutions. The following relevant technologies can be optionally combined with the technical solutions of the embodiments of this disclosure and are within the scope of protection of the embodiments of this disclosure.

[0044] It should be noted that Figures 1 through 5 are merely illustrative examples of systems to which this disclosure applies. Naturally, the methods shown in the embodiments of this disclosure may be further applied to other systems. Furthermore, the terms “system” and “network” are often used interchangeably in this disclosure. The term “and / or” in this disclosure is merely a relational relationship describing related subjects, and indicates three types of relationships. For example, A and / or B indicates three cases: the existence of A alone, the simultaneous existence of A and B, and the existence of B alone. Furthermore, the letter “ / ” in this disclosure generally indicates that the preceding and succeeding related subjects are in an “or” relationship. It should also be understood that “indicates” as referred to in embodiments of this disclosure may mean direct or indirect suggestion, or that a relational relationship exists. For example, when A indicates B, it may mean that A directly indicates B (e.g., B is obtained through A), or it may mean that A indirectly indicates B (e.g., A indicates C and B is obtained through C). There may also be a correlation between A and B. Furthermore, it should be understood that the term "corresponding" as used in embodiments of this disclosure may mean the possibility of a direct or indirect correspondence between two objects, a related relationship between two objects, or a relationship such as an instructive-instructed relationship or a constituent-constituent relationship. Also, it should be understood that "predefined" or "predefined rules" as used in embodiments of this disclosure may be implemented by pre-storing in a device the corresponding code, table, or other method (including, for example, terminal and network devices) that can be used to indicate related information, and that specific embodiments are not limited in this disclosure. For example, "predefined" may refer to something defined within a protocol. Also, it should be understood that the term "protocol" in embodiments of this disclosure may refer to, and is not limited in this disclosure, standard protocols in the field of communications, such as the LTE protocol, the NR protocol, and related protocols applicable to future communication systems.

[0045] In the embodiments of this disclosure, relevant technologies of the embodiments of this disclosure are described below to facilitate understanding of the technical solutions. These relevant technologies can be optionally combined with the technical solutions of the embodiments of this disclosure, and all such combinations are covered within the scope of the embodiments of this disclosure.

[0046] Determining the physical downlink shared channel (PDSCH) and transport block size (TBS): For PDSCHs scrambled by C-RNTI, MCS-C-RNTI, TC-RNTI, CS-RNTI, or SI-RNTI and scheduled by DCI 1_0, 1_1, or 1_2, the terminal must determine the TBS as follows:

[0047] 1) First, determine the number of resource elements (REs) in the slot (number of REs in the slot (N RE ) First, decide on the following.

[0048] First, the formula

number

number

number

number

number

[0049] Next, the formula

number

[0050] 2) Next, the formula

number

number

[0051] 3) Finally,

number

[0052] For PDSCHs scrambled by P-RNTI, RA-RNTI, or MsgB-RNTI and scheduled by DCI 1_0, when determining the TBS, operation 2) above is modified.

number

[0053] Scaling coefficients for N_info corresponding to P-RNTI, RA-RNTI, and MsgB-RNTI [Table 1]

[0054] TBS scaling improves downlink coverage performance by reducing the code rate, as it effectively reduces the number of information bits without changing the number of time-frequency resources occupied by PDSCH transmission.

[0055] PDSCH repetitive transmission: When a terminal receives a PDSCH that has been CRC scrambled by C-RNTI, MCS-C-RNTI, or CS-RNTI and scheduled by DCI 1_1 or 1_2, if the terminal has pdsch-AggregationFactor=K configured by the upper layer parameters, it applies the same symbol assignment to K consecutive slots. The terminal expects TB to be repeated within the symbol assignment of each of these K consecutive slots, and the PDSCH is limited to a single transmission layer.

[0056] The redundant version (RV) applied to the nth transmission timing of the TB is determined according to Table 2, where n = 0, 1, ..., K-1.

[0057] RV is applied when the upper-level parameter pdsch-AggregationFactor exists. [Table 2]

[0058] Based on this, it is clear that coverage enhancement technologies do not apply to all uplink and downlink transmissions. For example, PDSCH repetitive transmission is only applied to PDSCH after terminal-specific parameter configuration (setting), and TBS scaling is only applied to some PDSCHs. Also, before terminal-specific parameter configuration, only Msg3 PUSCH supports repetitive transmission.

[0059] In communication scenarios where coverage performance is limited, such as in NTN systems, uplink and downlink transmissions that do not support coverage enhancement technologies may fail to meet coverage requirements. In particular, if uplink and downlink transmissions cannot be performed successfully before terminal-specific parameter configuration, terminals may be unable to access the network, which has a significant impact on system performance. Therefore, it is necessary to enhance uplink and downlink transmissions before terminal-specific parameter configuration to improve their coverage performance.

[0060] In the embodiments of this disclosure, the technical solutions are described in detail below through specific embodiments to facilitate understanding of the technical solutions. The above-mentioned related technologies can be optionally combined with the technical solutions of the embodiments of this disclosure, and all such combinations are covered within the scope of the embodiments of this disclosure. The embodiments of this disclosure include at least some of the following:

[0061] Based on this, embodiments of the present disclosure provide a wireless communication method as shown in Figure 6. This method is applied to a network device and includes the following:

[0062] In S601, the network device transmits first information to the terminal device. This first information is used to indicate whether the network device supports receiving or transmitting a first transmission based on a first transmission method before dedicated parameters are set on the terminal device, and the first transmission method is used for coverage enhancement.

[0063] Embodiments of this disclosure provide a wireless communication method as shown in Figure 7. This method is applied to a terminal device and includes the following:

[0064] In S701, the terminal device receives first information transmitted from the network device. This first information is used to indicate whether the network device supports receiving or transmitting a first transmission based on a first transmission method before dedicated parameters are set on the terminal device, and the first transmission method is used for coverage enhancement.

[0065] In embodiments of this disclosure, the first information is used to indicate that a network device supports receiving or transmitting a first transmission based on a first transmission method for enhanced coverage before dedicated parameters are set on a terminal device. This improves the uplink and downlink coverage performance before dedicated parameters are set on a terminal device and avoids situations where the terminal device cannot access the network.

[0066] In some embodiments, the first transmission method described above may include at least one of the following: Repeated transmission of a Physical Downlink Shared Channel (PDSCH), Scaling of the Transport Block Size (TRB) of PDSCH. Repeated transmission on a Physical Uplink Shared Channel (PUSCH).

[0067] To make it clear, before setting the dedicated parameters for the terminal device, if the first transmission method includes repeated transmission of PDSCH, the network device may support transmitting PDSCH based on repeated transmission of PDSCH. If the first transmission method includes TBS scaling of PDSCH, the network device may support transmitting PDSCH based on TBS scaling of PDSCH. If the first transmission method includes repeated transmission of PUSCH, the network device may support receiving PUSCH based on repeated transmission of PUSCH. Of course, the first transmission method may also include any two or three transmission methods, and we will not repeat that here.

[0068] Terminal device-specific parameters may include terminal-specific radio resource control (RRC) configuration parameters. These terminal-specific RRC configuration parameters may include at least terminal-specific bandwidth portion (BWP) parameters and transmission repetition counts.

[0069] Here, PDSCH repetition transmission means that transmission blocks (TBs) are repeatedly transmitted on the PDSCH, PDSCH TBS scaling means scaling the TBS carried by the PDSCH, and PUSCH repetition transmission can mean that TBs are repeatedly transmitted on the PUSCH.

[0070] In some embodiments, the first transmission described above may include at least one of the following: Transmission during a random access procedure, Transmission after the random access procedure and before the dedicated parameters are set on the above terminal device.

[0071] To make it easier to understand, before setting specific parameters for the terminal device, PDSCH transmission (i.e., first transmission) can refer to PDSCH transmissions during a random access procedure. For example, a PDSCH scrambled by RA-RNTI and scheduled by DCI 1_0, i.e., message 2 (Msg2) PDSCH (Msg2 is carried by the PDSCH), and a PDSCH scrambled by TC-RNTI and scheduled by DCI 1_0, i.e., message 4 (Msg4) PDSCH (Msg4 is carried by the PDSCH).

[0072] To ensure clarity, before setting the dedicated parameters of the terminal device, the PDSCH transmission (i.e., the first transmission) can also refer to the PDSCH transmission after the random access procedure and before the dedicated parameters are set on the terminal device. For example, the PDSCH carrying the dedicated parameter configuration message for the terminal device.

[0073] To make it clearer, before setting the terminal device's specific parameters, a PUSCH transmission (i.e., the first transmission) can also refer to a PUSCH transmission after the random access procedure and before the terminal device's specific parameters are set. For example, a PUSCH carrying a Radio Resource Control (RRC) connection establishment completion message.

[0074] In some embodiments, the first information described above may include a first parameter. This first parameter is used to indicate whether a network device supports receiving or transmitting the first transmission based on the first transmission method described above before a dedicated parameter is set on a terminal device.

[0075] In possible embodiments, if the first information includes a first parameter, it may mean that the network device supports receiving or transmitting a first transmission based on a first transmission method before the terminal has a dedicated parameter set. If the first information does not include a first parameter, it may mean that the network device does not support receiving or transmitting a first transmission based on a first transmission method before the terminal has a dedicated parameter set.

[0076] In another embodiment, by assigning different values ​​to the first parameter included in the first information, we will explain whether the network device supports receiving or transmitting the first transmission based on the first transmission method before a dedicated parameter is set on the terminal.

[0077] In some embodiments, if the first information includes a first parameter and is set to "enabled," it may mean that the network device supports receiving or transmitting a first transmission based on a first transmission method before a dedicated parameter is set on the terminal.

[0078] In some embodiments, the first information described above may include a second parameter, which is a parameter of the first transmission method described above.

[0079] In some embodiments, if a network device supports receiving or transmitting a first transmission based on a first transmission method before dedicated parameters are set on a terminal, the first information may further include second parameters. This allows the terminal device to execute the first transmission method based on the second parameters.

[0080] In some embodiments, the above first information is conveyed by one of the following: System information, Random Access Response (RAR) message.

[0081] In other words, the first information can be conveyed by system information, such as SIB1. The first information can also be conveyed by a RAR message.

[0082] In the wireless communication method according to the embodiments of this disclosure, the network device may be configured to perform the following processes.

[0083] The network device receives second information transmitted from the terminal device. This second information is used for at least one of the following: Requesting to receive or transmit a first transmission based on a first transmission method, To demonstrate the ability to receive or transmit a first transmission based on the first transmission method. To require a transmission coefficient that includes the number of transmission iterations and / or a scaling factor.

[0084] As an example, a wireless communication method according to an embodiment of the present disclosure includes the following, as shown in Figure 8.

[0085] In S601, the network device transmits first information to the terminal device. This first information is used to indicate whether the network device supports receiving or transmitting a first transmission based on a first transmission method before dedicated parameters are set on the terminal device, and the first transmission method is used for coverage enhancement.

[0086] In S602, the network device receives second information transmitted from the terminal device. The second information is used for at least one of the following: Requesting to receive or transmit a first transmission based on a first transmission method, To demonstrate the ability to receive or transmit a first transmission based on the first transmission method. To require a transmission coefficient that includes the number of transmission iterations and / or a scaling factor.

[0087] In other words, after the network device transmits the first piece of information to the terminal device, the network device receives the second piece of information transmitted from the terminal device.

[0088] In the wireless communication method according to the embodiments of this disclosure, the terminal device may be configured to perform the following processes.

[0089] The terminal device transmits second information to the network device. The second information is used for at least one of the following: Requesting to receive or transmit a first transmission based on a first transmission method, To demonstrate the ability to receive or transmit a first transmission based on the first transmission method. To require a transmission coefficient that includes the number of transmission iterations and / or a scaling factor.

[0090] As an example, a wireless communication method according to an embodiment of the present disclosure includes the following, as shown in Figure 9.

[0091] In S701, the terminal device receives first information transmitted from the network device. This first information is used to indicate whether the network device supports receiving or transmitting a first transmission based on a first transmission method before dedicated parameters are set on the terminal device, and the first transmission method is used for coverage enhancement.

[0092] In S702, the terminal device transmits second information to the network device. The second information is used for at least one of the following: Requesting to receive or transmit a first transmission based on a first transmission method, To demonstrate the ability to receive or transmit a first transmission based on the first transmission method. To require a transmission coefficient that includes the number of transmission iterations and / or a scaling factor.

[0093] In other words, after the terminal device receives the first piece of information transmitted from the network device, the terminal device transmits the second piece of information to the network device.

[0094] In some embodiments, when the first transmission method includes repeated transmission of PDSCH, the second information is used for at least one of the following: Requesting to receive PDSCH based on repeated transmission of PDSCH, To demonstrate the ability to receive PDSCH based on repeated transmission of PDSCH. Request the number of PDSCH transmission repetitions.

[0095] If the first transmission method includes PDSCH TBS scaling, the second information is used for at least one of the following: Requesting PDSCH reception based on PDSCH TBS scaling, To demonstrate the ability to receive PDSCH based on TBS scaling of PDSCH. Request the PDSCH TBS scaling factor.

[0096] If the first transmission method includes repeated transmission of PUSCH, the second information is used for at least one of the following: Requesting the transmission of PUSCH based on repeated transmissions of PUSCH, To demonstrate the ability to transmit PUSCH based on repeated transmission of PUSCH. Request the number of times the PUSCH transmission is repeated.

[0097] In some embodiments, the above second information is conveyed by one of the following: Message 1 (Msg1), Message 3 (Msg3).

[0098] In other words, the second information can be carried by Msg1. For example, it is possible to choose to initiate a random access procedure with a random access resource associated with the first transmission method. Optionally, the random access resources associated with the first transmission method can be further associated with transmission coefficients. For example, if different random access resources are associated with different transmission coefficients X1, X2, or X3, the terminal device can choose to initiate a random access procedure with a specific random access resource and request the corresponding transmission coefficient from the network device.

[0099] The second piece of information can also be delivered by Msg3.

[0100] In some embodiments, the above second information is included in one of the following within Msg3: Media Access Control (MAC) control element (CE), Radio Resource Control (RRC) signaling, Logical Channel Identification (LCID) corresponding to the Common Control Channel (CCCH), Reserved bits in the MAC subheader.

[0101] In one embodiment, the second information can be conveyed by MAC CE.

[0102] For example, one bit in the payload of the first MAC CE can be used to transmit second information. If this bit is set to 1, it can mean requesting to receive or transmit the first transmission based on the first transmission method, and / or indicating the ability to receive or transmit the first transmission based on the first transmission method. If this bit is set to 0, it can mean not requesting to receive or transmit the first transmission based on the first transmission method, and / or indicating not the ability to receive or transmit the first transmission based on the first transmission method. Optionally, two bits in the payload of the first MAC CE can be used to request transmission coefficients. For example, the bit field values ​​"00", "01", "10", and "11" can represent transmission coefficients X1, X2, X3, and no request for transmission coefficients, respectively.

[0103] As another example, second information can also be carried via a second MAC CE. The second MAC CE corresponds to one LCID and has a payload size of 0. If a terminal device transmits the second MAC CE in Msg3, it may mean requesting to receive or transmit the first transmission based on the first transmission method, and / or indicating its ability to receive or transmit the first transmission based on the first transmission method. If a terminal device does not transmit the second MAC CE in Msg3, it may mean not requesting to receive or transmit the first transmission based on the first transmission method, and / or indicating not its ability to receive or transmit the first transmission based on the first transmission method. Optionally, a third MAC CE with a different LCID can be introduced and associated with a different transmission coefficient, such as X1, X2, or X3. By transmitting the third MAC CE associated with the transmission coefficient in Msg3, the terminal device can request the corresponding transmission coefficient from the network device.

[0104] As yet another example, second information can also be carried via a second MAC CE and a fourth MAC CE. The second and fourth MAC CEs each correspond to one LCID, and both have a payload size of 0. When a terminal device transmits the second MAC CE in Msg3, it can mean requesting to receive or transmit the first transmission based on the first transmission method, and / or indicating the ability to receive or transmit the first transmission based on the first transmission method. When a terminal device transmits the fourth MAC CE in Msg3, it can mean not requesting to receive or transmit the first transmission based on the first transmission method, and / or indicating not the ability to receive or transmit the first transmission based on the first transmission method. Optionally, a third MAC CE with a different LCID can be introduced and associated with a different transmission coefficient, such as X1, X2, or X3. By transmitting the third MAC CE associated with the transmission coefficient in Msg3, the terminal device can request the corresponding transmission coefficient from the network device.

[0105] In another embodiment, second information can be carried via radio resource control (RRC) signaling. For example, a first reserved bit field of the RRC signaling corresponding to an existing Msg3 can be used to request and / or indicate the ability to receive or transmit a first transmission based on a first transmission scheme. Optionally, transmission coefficients can be carried via a second reserved bit field of the RRC signaling. For example, the values ​​"00", "01", "10", and "11" in the second reserved bit field can represent transmission coefficients X1, X2, X3, and no request for transmission coefficients, respectively.

[0106] In another embodiment, second information can be carried via an LCID corresponding to a common control channel (CCCH). Typically, CCCHs have two channel lengths: 48 bits and 64 bits. Therefore, a CCCH can specifically include a first common control channel (CCCH) 1 (which may have a channel length of 48 bits) and / or a second common control channel (CCCH) 2 (which may have a channel length of 64 bits). The LCIDs corresponding to CCCH1 and CCCH2 here are unused LCIDs. The terminal device can then determine the corresponding CCCH based on the first transmission method and the required channel length. If the terminal device satisfies the first condition, the CCCH Service Data Unit (SDU) transmitted in Msg3 is the SDU corresponding to CCCH1 or CCCH2. Otherwise, the CCCH SDU transmitted by the terminal device in Msg3 is the SDU corresponding to CCCH3 (the LCID corresponding to CCCH3 is the used LCID). CCCH SDUs are distinguished by different LCIDs, which are included in the MAC subheader located before the CCCH SDU. The first condition includes requesting to receive or transmit a first transmission based on a first transmission method, and / or indicating the ability to receive or transmit a first transmission based on a first transmission method. Optionally, a first common control channel (CCCH) 1 or a second common control channel (CCCH) 2 with different LCIDs may be introduced and associated with different transmission coefficients such as X1, X2, or X3. A terminal device may request the corresponding transmission coefficient from the network device by transmitting an SDU corresponding to CCCH1 or CCCH2 associated with the transmission coefficient in Msg3.

[0107] In another embodiment, second information can be carried via a first reserved bit field in the MAC subheader. For example, if the first reserved bit field is set to 1, it may mean requesting to receive or transmit a first transmission based on a first transmission scheme, and / or indicating the ability to receive or transmit a first transmission based on a first transmission scheme. Optionally, transmission coefficients can be carried via a second reserved bit field in the MAC subheader. For example, the values ​​"00", "01", "10", and "11" in the second reserved bit field may represent transmission coefficients X1, X2, X3, and no request for transmission coefficients, respectively.

[0108] In the wireless communication method according to the embodiments of this disclosure, the network device may be configured to perform the following processes.

[0109] The network device transmits third-party information to the terminal device. This third-party information is used to determine the target transmission coefficient, which is the transmission coefficient to which the first transmission method is applied.

[0110] As an example, a wireless communication method according to an embodiment of this disclosure includes the following, as shown in Figure 10.

[0111] In S601, the network device transmits first information to the terminal device. This first information is used to indicate whether the network device supports receiving or transmitting a first transmission based on a first transmission method before dedicated parameters are set on the terminal device, and the first transmission method is used for coverage enhancement.

[0112] In S603, the network device transmits third information to the terminal device. The third information is used to determine the target transmission coefficient, which is the transmission coefficient to which the first transmission method is applied.

[0113] In other words, after the network device transmits the first piece of information to the terminal device, the network device can then transmit a third piece of information to the terminal device.

[0114] In the wireless communication method according to the embodiments of this disclosure, the terminal device may be configured to perform the following processes.

[0115] The terminal device receives third information transmitted from the network device. This third information is used to determine the target transmission coefficient, which is the transmission coefficient to which the first transmission method is applied.

[0116] As an example, a wireless communication method according to an embodiment of the present disclosure includes the following, as shown in Figure 11.

[0117] In S701, the terminal device receives first information transmitted from the network device. This first information is used to indicate whether the network device supports receiving or transmitting a first transmission based on a first transmission method before dedicated parameters are set on the terminal device, and the first transmission method is used for coverage enhancement.

[0118] In S703, the terminal device receives third information transmitted from the network device. The third information is used to determine the target transmission coefficient, which is the transmission coefficient to which the first transmission method is applied.

[0119] In other words, after the terminal device receives the first piece of information transmitted from the network device, the terminal device can then receive a third piece of information transmitted from the network device.

[0120] In some embodiments, if the first transmission method includes repeated transmission of PDSCH, the above transmission coefficient can include the number of PDSCH transmission repetitions.

[0121] If the first transmission method includes PDSCH TBS scaling, the above transmission coefficients may include PDSCH TBS scaling coefficients.

[0122] If the first transmission method includes repeated PUSCH transmission, the above transmission coefficient may include the number of PUSCH transmission repetitions.

[0123] In some embodiments, the above target transmission coefficient can be any one of the following: A first transmission coefficient, wherein the first transmission coefficient is a transmission coefficient within the first transmission coefficient set. A second transmission coefficient, wherein the second transmission coefficient is the default transmission coefficient. A third transmission coefficient, wherein the third transmission coefficient is a transmission coefficient carried by the first information.

[0124] In some embodiments, the above first set of transmission coefficients can be any one of the following: A set of transmission coefficients carried by the first information, Default transmission coefficient set.

[0125] In other words, the first transmission coefficient set can be carried by the first information or it can be the default transmission coefficient set.

[0126] In possible embodiments, the first transmission coefficient set is included in the first information, or a default transmission coefficient set is set in the first information.

[0127] Based on this, in some embodiments, when the third information is used to indicate the first transmission coefficient, the target transmission coefficient is the first transmission coefficient.

[0128] In other words, if the third information transmitted from the network device to the terminal device includes transmission coefficients from the first transmission coefficient set, the transmission coefficients from the first transmission coefficient set are used as the transmission coefficients applied in the first transmission method.

[0129] In some embodiments, if the third information is used to indicate a value outside the first set of transmission coefficients, the target transmission coefficient is the second transmission coefficient, or the first transmission described above does not apply the first transmission method.

[0130] In other words, if the third information transmitted from the network device to the terminal device contains values ​​outside the first transmission coefficient set, the first transmission method will either apply the default transmission coefficients, or the first transmission will not apply the first transmission method.

[0131] In some embodiments, the terminal device does not expect the third information to indicate a value outside the first set of transmission coefficients.

[0132] In another embodiment, the third transmission coefficient can be included in the first information, or the default second transmission coefficient can be set in the first information.

[0133] Based on this, in some embodiments, the third information is used to indicate whether the first transmission method applies a second or third transmission coefficient.

[0134] In other words, the third piece of information transmitted from the network device to the terminal device indicates whether the first transmission method applies the third transmission coefficient carried by the first piece of information, or whether the first transmission method applies the default second transmission coefficient.

[0135] In some embodiments, the target transmission coefficient is the second or third transmission coefficient, if the third information is used to instruct the first transmission method to apply the second or third transmission coefficient.

[0136] In other words, if the third information transmitted from the network device to the terminal device instructs the first transmission method to apply the third transmission coefficient carried by the first information, the first transmission method applies the third transmission coefficient. If the third information transmitted from the network device to the terminal device instructs the first transmission method to apply the default second transmission coefficient, the first transmission method applies the second transmission coefficient.

[0137] In some embodiments, if the third information is used to indicate that the first transmission method does not apply the second or third transmission coefficient, then the first transmission does not apply the first transmission method.

[0138] In other words, if the third information transmitted from the network device to the terminal device indicates that the first transmission method should not apply the third transmission coefficient carried by the first information, the first transmission will not apply the first transmission method. If the third information transmitted from the network device to the terminal device indicates that the first transmission method should not apply the default second transmission coefficient, the first transmission will not apply the first transmission method.

[0139] In some embodiments, the third information is conveyed by one of the following: Downlink Control Information (DCI), RAR message.

[0140] In other words, the third information can be carried by DCI. For example, DCI 1_0 for scheduling PDSCH and DCI 0_0 for scheduling PUSCH. The third information can also be carried by RAR messages.

[0141] Based on the above embodiment, when the wireless communication method according to the embodiment of this disclosure is applied to a network device, the network device transmits first information to a terminal device, receives second information transmitted from the terminal device, and then transmits third information to the terminal device. In other words, the network device sequentially executes S601, S602, and S603.

[0142] Based on the above embodiment, when the wireless communication method according to the embodiment of this disclosure is applied to a terminal device, the terminal device receives first information transmitted from the network device, then transmits second information to the network device, and then receives third information transmitted from the network device. In other words, the terminal device executes S701, S702, and S703 in sequence.

[0143] Based on this, in some embodiments, the target transmission coefficient is one of the following: A first transmission coefficient, wherein the first transmission coefficient is a transmission coefficient within the first transmission coefficient set. A second transmission coefficient, wherein the second transmission coefficient is the default transmission coefficient. A third transmission coefficient, wherein the third transmission coefficient is a transmission coefficient carried by the first information or the second information.

[0144] Here, we will explain that the third transmission coefficient is the transmission coefficient carried by the second information described above.

[0145] The transmission coefficient (i.e., target transmission coefficient) applied in the first transmission method is the transmission coefficient requested by the terminal device. If the first transmission method includes repeated PDSCH transmission, the second information transmitted from the terminal device to the network device in S702 is used to request the number of PDSCH transmission repetitions K. For example, if K=2, the third information transmitted from the network device to the terminal device includes the number of PDSCH transmission repetitions 2 (i.e., target transmission coefficient) or instructs the application of the number of PDSCH transmission repetitions K requested by the terminal device. If the first transmission method includes repeated PUSCH transmission, the second information transmitted from the terminal device to the network device in S702 is used to request the number of PUSCH transmission repetitions K. For example, if K=2, the third information transmitted from the network device to the terminal device includes the number of PUSCH transmission repetitions 2 (i.e., target transmission coefficient) or instructs the application of the number of PUSCH transmission repetitions K requested by the terminal device. If the first transmission method includes PDSCH TBS scaling, the second information transmitted from the terminal device to the network device in S702 is used to request the PDSCH TBS scaling coefficient S. For example, if S = 0.5, the third information transmitted from the network device to the terminal device includes the PDSCH TBS scaling coefficient of 0.5 (i.e., the target transmission coefficient) or instructs the application of the PDSCH TBS scaling coefficient S requested by the terminal device.

[0146] The following describes a wireless communication method according to an embodiment of the present disclosure.

[0147] In embodiments of the present disclosure, the first transmission method includes at least one of PDSCH repetition transmission, PDSCH TBS scaling, and PUSCH repetition transmission.

[0148] Based on different first transmission schemes, the wireless communication according to embodiments of the present disclosure includes, but is not limited to, the following Examples 1, 2, and 3.

[0149] Example 1: The first transmission method before setting dedicated parameters for the terminal device includes repeated transmission of PDSCH.

[0150] In the embodiments of this disclosure, at least one PDSCH supports repeated transmission before the setting of dedicated parameters for the terminal device, thereby improving downlink coverage performance.

[0151] In embodiments of this disclosure, the PDSCH repetitive transmission process prior to setting dedicated parameters for the terminal device is applied to a wireless communication system including a terminal device and a network device, as shown in Figure 12, and includes the following:

[0152] In S1201, the network device transmits first information to the terminal device. The first information is used for at least one of the following: The network device indicates that it supports transmitting PDSCH based on repeated PDSCH transmissions before dedicated parameters are set on the terminal device. Specify the parameters for PDSCH repetitive transmission.

[0153] In S1202, the terminal device transmits second information to the network device. The second information is used for at least one of the following: Requesting to receive PDSCH based on repeated transmission of PDSCH, To demonstrate the ability to receive PDSCH based on repeated transmission of PDSCH. Request the number of PDSCH transmission repetitions.

[0154] In S1203, the network device transmits third information to the terminal device. This third information is used to determine the number of repetitions of the target PDSCH transmission.

[0155] In embodiments of this disclosure, a network device transmits first information to a terminal device, which is used to indicate that the network device supports transmitting PDSCH based on repeated transmission of PDSCH for coverage enhancement before dedicated parameters are set on the terminal device. This improves downlink coverage performance before dedicated parameters are set on the terminal device and avoids situations where the terminal device cannot access the network.

[0156] First, the network device sends initial information to the terminal device to indicate that it supports transmitting PDSCH based on repeated PDSCH transmissions, before any specific parameters are set on the terminal device.

[0157] For example, if the first information includes the first parameter, or if the first information includes the first parameter and is set to "enabled", it may mean that the network device supports transmitting the PDSCH based on repeated transmissions of the PDSCH before the terminal device sets its dedicated parameters.

[0158] In some embodiments, the first information also includes a second parameter, which is a parameter for repeated transmission of the PDSCH.

[0159] In some embodiments, the second parameter described above includes at least one of the following: a random access resource associated with the repeated transmission of the PDSCH, a reference signal received power (RSRP) threshold corresponding to the repeated transmission of the PDSCH, the number of PDSCH transmission repetitions, or a set of PDSCH transmission repetitions.

[0160] In embodiments of this disclosure, a random access resource is used by a terminal device to perform a random access procedure. The random access resource associated with the repeated transmission of the PDSCH may be a specified Physical Random Access Channel (PRACH) format, a specified PRACH preamble, or a specified RO (PRACH occasion), and other configurable random access resources.

[0161] This explanation uses the example of using a PRACH preamble as a random access resource related to PDSCH repetitive transmission. Based on the competition-based and competition-free (non-competitive) PRACH preambles provided in the random access opportunity, the first information provides a PRACH preamble related to PDSCH repetitive transmission. The terminal device can select a PRACH preamble related to PDSCH repetitive transmission and initiate a random access procedure.

[0162] In embodiments of this disclosure, the PRACH preambles related to PDSCH repetitive transmission provided in the first information are fixed in number in the random access opportunity, as shown in Figure 13. Based on the competition-based and competition-free PRACH preambles provided in the random access opportunity, some preambles (i.e., PRACH preambles related to PDSCH repetitive transmission) are allocated for use in PDSCH repetitive transmission.

[0163] In embodiments of this disclosure, based on a reference signal received power (RSRP) threshold corresponding to the repeated transmission of a PDSCH, the terminal device determines, based on this RSRP threshold, whether to request and / or demonstrate its ability to receive a PDSCH based on a repeated transmission of a PDSCH, and / or whether to request a number of repetitions of the PDSCH transmission. For example, if the reference signal received power (RSRP) threshold corresponding to the repeated transmission of a PDSCH is -126 dBm, and the RSRP measured by the terminal device is below the RSRP threshold (-126 dBm), the terminal device can select a PRACH preamble associated with the repeated transmission of a PDSCH and initiate a random access procedure. In other words, the terminal device can request the network device to receive a PDSCH based on a repeated transmission of a PDSCH, and / or demonstrate its ability to receive a PDSCH based on a repeated transmission of a PDSCH, and / or request a number of repetitions of the PDSCH transmission.

[0164] In embodiments of this disclosure, the number of PDSCH transmission repetitions may be included in the first information or may be a protocol agreed upon (i.e., default) between the network device and the terminal device. The number of PDSCH transmission repetitions is valid only for a terminal that requests and / or indicates the ability to receive a PDSCH based on PDSCH repetition transmission and / or requests the number of PDSCH transmission repetitions. For example, if the first information provides the number of PDSCH transmission repetitions K = 2, 4, or 8, then after the terminal device requests and / or indicates the ability to receive a PDSCH based on PDSCH repetition transmission and / or requests the number of PDSCH transmission repetitions, the terminal device may receive the PDSCH K times in repetitions based on the PDSCH repetition transmission scheme.

[0165] In embodiments of this disclosure, the set of PDSCH transmission repetition counts may be included in the first information or may be agreed upon by protocol between the network device and the terminal device (i.e., the default). The set of PDSCH transmission repetition counts is valid only for a terminal that requests to receive a PDSCH based on PDSCH repetition transmission and / or indicates its ability to receive a PDSCH based on PDSCH repetition transmission and / or requests the number of PDSCH transmission repetitions. For example, if the first information provides a set of PDSCH transmission repetition counts K = {1, 2, 4, 8}, then after a terminal device requests to receive a PDSCH based on PDSCH repetition transmission and / or indicates its ability to receive a PDSCH based on PDSCH repetition transmission and / or requests the number of PDSCH transmission repetitions, the terminal device may receive a PDSCH K1 times in repetitions based on the PDSCH repetition transmission scheme, where K1 is one of the numbers in the set K.

[0166] The first information can be conveyed by system information, such as SIB1. The first information can also be conveyed by RAR messages.

[0167] Subsequently, the terminal device transmits second information to the network device, which is used for at least one of the following: requesting to receive a PDSCH based on repeated transmissions of a PDSCH, indicating the ability to receive a PDSCH based on repeated transmissions of a PDSCH, or requesting the number of repetitions of the PDSCH transmission.

[0168] Secondary information can be carried by Msg1. For example, the terminal device may choose to initiate a random access procedure with a random access resource associated with a PDSCH repetition transmission. Optionally, random access resources associated with a PDSCH repetition transmission may be further associated with the number of PDSCH transmission repetitions. For example, if different random access resources are associated with different PDSCH transmission repetition counts of 2, 4, or 8, the terminal device may choose to initiate a random access procedure with a specific random access resource to request the corresponding PDSCH transmission repetition count from the network device.

[0169] The second piece of information can also be delivered via Msg3. Specifically, the following solutions are possible.

[0170] In one embodiment, second information can be transported via MAC CE.

[0171] For example, a bit in the payload of the first MAC CE can be used to carry second information. If this bit is set to 1, it can mean requesting the reception of a PDSCH based on repeated PDSCH transmissions, and / or indicating the ability to receive a PDSCH based on repeated PDSCH transmissions. If this bit is set to 0, it can mean not requesting the reception of a PDSCH based on repeated PDSCH transmissions, and / or indicating not the ability to receive a PDSCH based on repeated PDSCH transmissions. Optionally, two bits in the payload of the first MAC CE can be used to request the number of PDSCH transmission repetitions. For example, the bit field values ​​"00", "01", "10", and "11" indicate 2, 4, and 8 PDSCH transmission repetitions, and no request for repeated PDSCH transmissions, respectively.

[0172] Additionally, a second MAC CE can be used to carry second information. The second MAC CE corresponds to one LCID and has a payload size of 0. If a terminal device transmits the second MAC CE in Msg3, it may mean requesting the reception of a PDSCH based on repeated PDSCH transmissions, and / or indicating its ability to receive a PDSCH based on repeated PDSCH transmissions. If a terminal device does not transmit the second MAC CE in Msg3, it may mean not requesting the reception of a PDSCH based on repeated PDSCH transmissions, and / or indicating not its ability to receive a PDSCH based on repeated PDSCH transmissions. Optionally, a third MAC CE with a different LCID can be introduced and associated with different PDSCH transmission repetition counts of 2, 4, or 8. By transmitting the third MAC CE associated with the PDSCH transmission repetition count in Msg3, the terminal device can request the corresponding PDSCH transmission repetition count from the network device.

[0173] Additionally, second information can be carried via a second MAC CE and a fourth MAC CE. Each of the second and fourth MAC CEs corresponds to one LCID, and both have a payload size of 0. When a terminal device transmits the second MAC CE in Msg3, it can mean requesting the reception of a PDSCH based on repeated PDSCH transmissions, and / or indicating its ability to receive a PDSCH based on repeated PDSCH transmissions. When a terminal device transmits the fourth MAC CE in Msg3, it can mean not requesting the reception of a PDSCH based on repeated PDSCH transmissions, and / or indicating not its ability to receive a PDSCH based on repeated PDSCH transmissions. Optionally, a third MAC CE with a different LCID can be introduced and associated with different PDSCH transmission repetition counts of 2, 4, or 8. By transmitting the third MAC CE associated with the PDSCH transmission repetition count in Msg3, the terminal device can request the corresponding PDSCH transmission repetition count from the network device.

[0174] In another embodiment, second information can be carried via radio resource control (RRC) signaling. For example, the first reserved bit field of the RRC signaling corresponding to an existing Msg3 can be used to request and / or indicate the ability to receive a PDSCH based on repeated transmissions of the PDSCH. Optionally, the number of PDSCH transmission repetitions can be carried via the second reserved bit field of the RRC signaling. For example, the values ​​"00", "01", "10", and "11" of the second reserved bit field indicate 2, 4, and 8 PDSCH transmission repetitions, and no request for repeated PDSCH transmissions, respectively.

[0175] In another embodiment, second information can be carried via an LCID corresponding to a common control channel (CCCH). Typically, CCCHs have two channel lengths: 48 bits and 64 bits. Therefore, a CCCH can specifically include a first common control channel (CCCH) 1 (which may have a channel length of 48 bits) and / or a second common control channel (CCCH) 2 (which may have a channel length of 64 bits). The LCIDs corresponding to CCCH1 and CCCH2 here are unused LCIDs. The terminal device can then determine the corresponding CCCH based on the first transmission method and the required channel length. If the terminal device satisfies the first condition, the CCCH SDU transmitted in Msg3 is the SDU corresponding to CCCH1 or CCCH2. Otherwise, the CCCH SDU transmitted by the terminal device in Msg3 is the SDU corresponding to CCCH3 (the LCID corresponding to CCCH3 is the used LCID). CCCH SDUs are distinguished by different LCIDs, which are included in the MAC subheader located before the CCCH SDU. The first condition includes requesting and / or demonstrating the ability to receive a PDSCH based on repeated PDSCH transmissions. Optionally, a first common control channel (CCCH) 1 or a second common control channel (CCCH) 2 with different LCIDs may be introduced and associated with different PDSCH transmission repetition counts of 2 / 4 / 8. A terminal device may request the corresponding PDSCH transmission repetition count from the network device by transmitting an SDU corresponding to CCCH1 or CCCH2 associated with the PDSCH transmission repetition count in Msg3.

[0176] In another embodiment, second information can be carried via a first reserved bit field in the MAC subheader. For example, if the first reserved bit field is set to 1, it may mean requesting and / or indicating the ability to receive a PDSCH based on repeated transmissions of the PDSCH. Optionally, the number of PDSCH transmission repetitions can be carried via a second reserved bit field in the MAC subheader. For example, the values ​​"00", "01", "10", and "11" in the second reserved bit field indicate 2, 4, and 8 PDSCH transmission repetitions, and no request for repeated PDSCH transmissions, respectively.

[0177] Finally, if the terminal device applies a set of PDSCH transmission repetition counts, the network device sends third information to the terminal device, which is used to determine the number of PDSCH transmission repetition counts to which the PDSCH transmission repetitions will ultimately be applied. For example, after the terminal device requests and / or indicates its ability to receive a PDSCH based on a PDSCH transmission repetition count, the network device further determines the third information based on the first information or the protocol default set of PDSCH transmission repetition counts, e.g., K={1,2,4,8}.

[0178] If the number of elements included in the set of PDSCH transmission repetition counts K provided in the first information, or the default set of PDSCH transmission repetition counts, is variable, then for example, the set of PDSCH transmission repetition counts K could be K={1,2} (containing two candidate values ​​for PDSCH transmission repetition counts), K={1,2,4} (containing three candidate values ​​for PDSCH transmission repetition counts), or K={1,2,4,8} (containing four candidate values ​​for PDSCH transmission repetition counts), in which case the width P of the bit field required for the third information would also be different. For example, K={1,2} / {1,2,4} / {1,2,4,8} would require 1 / 2 / 2 bits, respectively.

[0179] To ensure that terminal devices and network devices have the same understanding of the bit field of the third information,

number

number

[0180] For example, in the case of a set of PDSCH transmission repetition counts K={1,2,4}, the mapping relationship between the bit field of the third information and the PDSCH transmission repetition count is as shown in Table 3.

[0181] Mapping relationship between the bit field of the third information and the number of repetitions of PDSCH transmission [Table 3]

[0182] Value 2 indicated by the bit field of the third piece of information PHowever, considering that the number of PDSCH transmission repetitions may be greater than the number of candidate values ​​in the set K, the following must be specified to ensure that terminal devices and network devices always have the same understanding of the PDSCH transmission repetition count indicated by the bit field: Terminal devices do not expect to be instructed with a value outside the set K of PDSCH transmission repetitions. Alternatively, if a terminal is instructed with a value outside the set K of PDSCH transmission repetitions, the PDSCH repetition transmission may apply the default number of PDSCH transmission repetitions or receive a single PDSCH transmission.

[0183] For example, a network device uses 2 bits to indicate the number of repetitions of a PDSCH transmission and provides a set of PDSCH transmission repetition counts K = {1, 2, 4}. In this case, the value indicated by the bit field is 2 2 =4 is greater than the number of candidate values ​​in K, which is 3. Therefore, the following provision is necessary: ​​If a terminal device requests a network device to receive a PDSCH based on repeated transmissions of a PDSCH, and / or indicates the ability to receive a PDSCH based on repeated transmissions of a PDSCH, the terminal device does not expect a value outside of K={1,2,4}, e.g., bit field "11". Or, if the bit field indicates "11", repeated transmissions of a PDSCH apply the default number of PDSCH transmissions, e.g., 2, or receive a single PDSCH transmission.

[0184] Furthermore, as an option, if a terminal device applies a certain number of repetitions of a PDSCH transmission, the network device sends third information to the terminal device so that the terminal device can determine, based on the third information, the number of PDSCH transmission repetitions to which the PDSCH repetition transmission will ultimately be applied. For example, after a terminal device requests and / or indicates its ability to receive a PDSCH based on a PDSCH repetition transmission, the network device further determines the third information based on the first or second information or the protocol default number of PDSCH transmission repetitions, e.g., K=2 / 4 / 8. For example, if the third information indicates "1", it may mean that K should be applied, and if it indicates "0", it may mean that K should not be applied.

[0185] Third-party information can be carried by DCI. For example, DCI 1_0 for scheduling PDSCH. Third-party information can also be carried by RAR.

[0186] Example 2: The first transmission method before setting the transmission parameters of the terminal device includes repeated transmission of PUSCH.

[0187] Embodiments of this disclosure include a configuration in which at least one PUSCH before the setting of dedicated parameters for the terminal device supports repeated transmission, thereby improving uplink coverage performance.

[0188] In embodiments of this disclosure, the PUSCH repetitive transmission process prior to setting dedicated parameters for the terminal device is applied to a wireless communication system including a terminal device and a network device, as shown in Figure 14, and includes the following:

[0189] In S1401, the network device transmits first information to the terminal device. The first information is used for at least one of the following: The network device indicates that it supports receiving PUSCH based on repeated PUSCH transmissions before dedicated parameters are set on the terminal device. Specify the parameters for repeated transmission in PUSCH.

[0190] In S1402, the terminal device transmits second information to the network device. The second information is used for at least one of the following: Requesting the transmission of PUSCH based on repeated transmissions of PUSCH, To demonstrate the ability to transmit PUSCH based on repeated transmission of PUSCH. Request the number of times the PUSCH transmission is repeated.

[0191] In S1403, the network device transmits third information to the terminal device. This third information is used to determine the number of repetitions of the target PUSCH transmission.

[0192] In embodiments of this disclosure, a network device transmits first information to a terminal device, indicating that the network device supports receiving PUSCH based on repeated transmission of PUSCH for coverage enhancement before dedicated parameters are set on the terminal device. This improves uplink coverage performance before dedicated parameters are set on the terminal device and avoids situations where the terminal device cannot access the network.

[0193] First, the network device transmits a first piece of information to the terminal device, which is used to indicate that the network device supports receiving PUSCH based on repeated transmissions of PUSCH before a dedicated parameter is set on the terminal device. For example, if the first piece of information includes a first parameter, or if the first piece of information includes a first parameter and is set to "enabled", it may mean that the network device supports receiving PUSCH based on repeated transmissions of PUSCH before a dedicated parameter is set on the terminal device.

[0194] In some embodiments, the first information also includes a second parameter, which is a parameter for repeated transmission of PUSCH.

[0195] In some embodiments, the second parameter described above includes at least one of the following: Random access resources related to repeated transmissions of PUSCH, Reference signal received power (RSRP) threshold for repeated transmission in PUSCH, Number of PUSCH transmission repetitions, The set of the number of times PUSCH transmissions are repeated.

[0196] In embodiments of this disclosure, a random access resource is used by a terminal device to perform a random access procedure. The random access resource associated with repeated transmission of PUSCH may be a specified Physical Random Access Channel (PRACH) format, a specified PRACH preamble, or a specified RO (PRACH occasion), and other configurable random access resources.

[0197] This explanation uses the example of using a PRACH preamble as a random access resource related to repeated PUSCH transmissions. Based on the competition-based and competition-free PRACH preambles provided in the random access opportunity, the first information provides a PRACH preamble related to repeated PUSCH transmissions. The terminal device can select a PRACH preamble related to repeated PUSCH transmissions and initiate a random access procedure.

[0198] In embodiments of this disclosure, the PRACH preambles related to PUSCH repetitive transmission provided in the first information are fixed in number in the random access opportunity, as shown in Figure 13. Based on the competition-based and competition-free PRACH preambles provided in the random access opportunity, some preambles (PRACH preambles related to PUSCH repetitive transmission) can be allocated for use in PUSCH repetitive transmission.

[0199] In embodiments of the present disclosure, the terminal device determines, based on a reference signal received power (RSRP) threshold corresponding to repeated transmissions of PUSCH, whether to request that PUSCH be transmitted based on repeated PUSCH transmissions, and / or to indicate the ability to transmit PUSCH based on repeated PUSCH transmissions, and / or to request a number of repetitions of PUSCH transmissions.

[0200] For example, if the reference signal received power (RSRP) threshold for repeated transmission of PUSCH is -126 dBm, and the RSRP measured by the terminal device is below that RSRP threshold (-126 dBm), the terminal device can select a PRACH preamble associated with repeated PUSCH transmission and initiate a random access procedure. In other words, the terminal device can request the network device to transmit a PUSCH based on repeated PUSCH transmission, and / or indicate its ability to transmit a PUSCH based on repeated PUSCH transmission, and / or request the number of repetitions of the PUSCH transmission.

[0201] In embodiments of this disclosure, the number of repetitions of a PUSCH transmission may be included in the first information or may be agreed upon by protocol between the network device and the terminal device (i.e., the default). The number of repetitions of a PUSCH transmission is valid only for a terminal that requests to transmit a PUSCH based on a PUSCH repetition transmission, and / or indicates the ability to transmit a PUSCH based on a PUSCH repetition transmission, and / or requests the number of repetitions of a PUSCH transmission. For example, if the first information provides the number of repetitions of a PUSCH transmission K = 2, 4, or 8, then after the terminal device requests to transmit a PUSCH based on a PUSCH repetition transmission, and / or indicates the ability to transmit a PUSCH based on a PUSCH repetition transmission, and / or requests the number of repetitions of a PUSCH transmission, the terminal device may transmit the PUSCH K times in a repeating manner based on the PUSCH repetition transmission scheme.

[0202] In embodiments of this disclosure, the set of repetition counts for a PUSCH transmission may be included in the first information, or it may be a set agreed upon by protocol between the network device and the terminal device (i.e., a default). The set of repetition counts for a PUSCH transmission is valid only for a terminal that requests to transmit a PUSCH based on a PUSCH repetition transmission, and / or indicates its ability to transmit a PUSCH based on a PUSCH repetition transmission, and / or requests a number of repetitions for a PUSCH transmission. For example, if the first information provides a set of repetition counts for a PUSCH transmission K = {1, 2, 4, 8}, then after the terminal device requests to transmit a PUSCH based on a PUSCH repetition transmission, and / or indicates its ability to transmit a PUSCH based on a PUSCH repetition transmission, and / or requests a number of repetitions for a PUSCH transmission, the terminal device may transmit a PUSCH K1 times based on a PUSCH repetition transmission scheme, where K1 is one of the numbers in the set K.

[0203] The first information can be conveyed by system information, such as SIB1. The first information can also be conveyed by RAR messages.

[0204] Subsequently, the terminal device transmits second information to the network device, which is used for at least one of the following: requesting that PUSCH be transmitted based on repeated transmissions of PUSCH; indicating the ability to transmit PUSCH based on repeated transmissions of PUSCH; or requesting the number of repetitions of PUSCH transmission.

[0205] Secondary information can be carried by Msg1. For example, the terminal device may choose to initiate a random access procedure with a random access resource associated with a PUSCH repetition transmission. Optionally, the random access resources associated with a PUSCH repetition transmission may be further associated with the number of PUSCH transmission repetitions. For example, if different random access resources are associated with different PUSCH transmission repetition counts of 2, 4, or 8, the terminal device may choose to initiate a random access procedure with a specific random access resource to request the corresponding PUSCH transmission repetition count from the network device.

[0206] The second piece of information can also be delivered via Msg3. Specifically, the following solutions are possible.

[0207] In one embodiment, second information can be transported via MAC CE.

[0208] For example, a bit in the payload of the first MAC CE can be used to carry second information. If this bit is set to 1, it can mean requesting that PUSCH be sent based on repeated PUSCH transmissions, and / or indicating the ability to send PUSCH based on repeated PUSCH transmissions. If this bit is set to 0, it can mean not requesting that PUSCH be sent based on repeated PUSCH transmissions, and / or indicating not the ability to send PUSCH based on repeated PUSCH transmissions. Optionally, two bits in the payload of the first MAC CE can be used to request the number of PUSCH transmission repetitions. For example, the bit field values ​​"00", "01", "10", and "11" can indicate 2, 4, and 8 PUSCH transmission repetitions, and no request for repeated PUSCH transmissions, respectively.

[0209] Additionally, a second MAC CE can be used to carry second information. The second MAC CE corresponds to one LCID and has a payload size of 0. If a terminal device transmits the second MAC CE in Msg3, it may mean requesting that a PUSCH be sent based on repeated PUSCH transmissions, and / or indicating the ability to send a PUSCH based on repeated PUSCH transmissions. If a terminal device does not transmit the second MAC CE in Msg3, it may mean that it does not request that a PUSCH be sent based on repeated PUSCH transmissions, and / or indicates that it does not indicate the ability to send a PUSCH based on repeated PUSCH transmissions. Optionally, a third MAC CE with a different LCID can be introduced and associated with different PDSCH transmission repetition counts of 2, 4, or 8. By transmitting the third MAC CE associated with the PUSCH transmission repetition count in Msg3, the terminal device can request the corresponding PUSCH transmission repetition count from the network device.

[0210] Additionally, second information can be carried via a second MAC CE and a fourth MAC CE. Each of the second and fourth MAC CEs corresponds to one LCID, and both have a payload size of 0. When a terminal device transmits the second MAC CE in Msg3, it can mean requesting that a PUSCH be sent based on repeated PUSCH transmissions, and / or indicating the ability to send a PUSCH based on repeated PUSCH transmissions. When a terminal device transmits the fourth MAC CE in Msg3, it can mean not requesting that a PUSCH be sent based on repeated PUSCH transmissions, and / or indicating not the ability to send a PUSCH based on repeated PUSCH transmissions. Optionally, a third MAC CE with a different LCID can be introduced and associated with different PUSCH transmission repetition counts of 2, 4, or 8. By transmitting the third MAC CE associated with the PUSCH transmission repetition count in Msg3, the terminal device can request the corresponding PUSCH transmission repetition count from the network device.

[0211] In another embodiment, second information can be carried via radio resource control (RRC) signaling. For example, the first reserved bit field of the RRC signaling corresponding to an existing Msg3 can be used to request and / or indicate the ability to transmit a PUSCH based on repeated transmissions of PUSCH. Optionally, the number of repetitions of the PUSCH transmission can be carried via the second reserved bit field of the RRC signaling. For example, the values ​​"00", "01", "10", and "11" of the second reserved bit field can indicate 2, 4, and 8 repetitions of the PUSCH transmission, and no request for repeated PUSCH transmissions, respectively.

[0212] In another embodiment, second information can be carried via an LCID corresponding to a common control channel (CCCH). Typically, CCCHs have two channel lengths: 48 bits and 64 bits. Therefore, a CCCH can specifically include a first common control channel (CCCH) 1 (which may have a channel length of 48 bits) and / or a second common control channel (CCCH) 2 (which may have a channel length of 64 bits). The LCIDs corresponding to CCCH1 and CCCH2 here are unused LCIDs. The terminal device can then determine the corresponding CCCH based on the first transmission method and the required channel length. If the terminal device satisfies the first condition, the CCCH SDU transmitted in Msg3 is the SDU corresponding to CCCH1 or CCCH2. Otherwise, the CCCH SDU transmitted by the terminal device in Msg3 is the SDU corresponding to CCCH3 (the LCID corresponding to CCCH3 is the used LCID). CCCH SDUs are distinguished by different LCIDs, which are included in the MAC subheader located before the CCCH SDU. The first condition includes requesting the transmission of a PUSCH based on repeated PUSCH transmissions, and / or demonstrating the ability to transmit a PUSCH based on repeated PUSCH transmissions. Optionally, a first common control channel (CCCH) 1 or a second common control channel (CCCH) 2 with different LCIDs may be introduced and associated with different PDSCH transmission repetition counts of 2 / 4 / 8. A terminal device may request the corresponding PUSCH transmission repetition count from the network device by transmitting an SDU corresponding to CCCH1 or CCCH2 associated with the PUSCH transmission repetition count in Msg3.

[0213] In another embodiment, second information can be carried via a first reserved bit field in the MAC subheader. For example, if the first reserved bit field is set to 1, it may mean requesting that PUSCH be sent based on repeated PUSCH transmissions, and / or indicating the ability to send PUSCH based on repeated PUSCH transmissions. Optionally, the number of PUSCH transmission repetitions can be carried via a second reserved bit field in the MAC subheader. For example, the values ​​"00", "01", "10", and "11" in the second reserved bit field indicate 2, 4, and 8 PUSCH transmission repetitions, and no request for repeated PUSCH transmissions, respectively.

[0214] Finally, if the terminal device applies a set of repetition counts for PUSCH transmissions, the network device sends third information to the terminal device, which is used to determine the final number of PDSCH transmissions to which the PDSCH repetition transmissions will be applied. For example, after the terminal device requests and / or indicates its ability to send PUSCHs based on PUSCH repetition transmissions, the network device further determines third information based on the first information or the protocol default set of PUSCH transmission repetition counts, e.g., K={1,2,4,8}. If the number of elements included in the set of push transmission repetition counts K provided in the first information, or the default set of push transmission repetition counts, is variable, then for example, the set of push transmission repetition counts K could be K={1,2} (containing two candidate push transmission repetition counts), K={1,2,4} (containing three candidate push transmission repetition counts), or K={1,2,4,8} (containing four candidate push transmission repetition counts), in which case the width P of the bit field required for the third information would also be different. For example, K={1,2} / {1,2,4} / {1,2,4,8} would require 1 / 2 / 2 bits, respectively.

[0215] To ensure that terminal devices and network devices have the same understanding of the bit field of the third information,

number

number

[0216] For example, in the case of a set of PUSCH transmission repetition counts K={1,2,4}, the mapping relationship between the bit field of the third information and the PUSCH transmission repetition count is as shown in Table 4.

[0217] Mapping relationship between the bit field of the third piece of information and the number of repetitions of push transmission. [Table 4]

[0218] Value 2 indicated by the bit field of the third piece of information PIn order to ensure that the terminal device and the network device always have the same understanding of the number of repetitions of PUSCH transmission indicated by the bit field, considering that it may be greater than the number of candidate values within the set K of the number of repetitions of PUSCH transmission, the following needs to be specified. The terminal device does not expect a value outside the set K of the number of repetitions of PUSCH transmission to be indicated. Alternatively, when a value outside the set K of the number of repetitions of PUSCH transmission is indicated to the terminal, the repeated transmission of PUSCH may apply the default number of repetitions of PUSCH transmission or may transmit a single PUSCH transmission.

[0219] For example, the network device uses 2 bits to indicate the number of repetitions of PUSCH transmission and provides the set K = {1, 2, 4} of the number of repetitions of PUSCH transmission. In this case, the value 2 2 = 4 indicated by the bit field is greater than the number 3 of candidate values within K. Therefore, the following specification is necessary. When the terminal device requests the network device to transmit PUSCH based on the repeated transmission of PUSCH and / or indicates the ability to transmit PUSCH based on the repeated transmission of PUSCH, the terminal device does not expect a value outside K = {1, 2, 4}, for example, the bit field "11" to be indicated. Alternatively, when the bit field indicates "11", the repeated transmission of PUSCH applies the default number of repetitions of PUSCH transmission, for example, 2, or transmits a single PUSCH transmission.

[0220] Furthermore, as an option, if the terminal device applies a certain number of repetitions for a single PUSCH transmission, the network device sends third information to the terminal device so that the terminal device can determine, based on the third information, the number of PUSCH transmission repetitions to which the PUSCH repetition transmission will ultimately be applied. For example, after the terminal device requests and / or indicates its ability to send a PUSCH based on a PUSCH repetition transmission, the network device further determines the third information based on the first or second information or the protocol default number of PUSCH transmission repetitions, e.g., K=2 / 4 / 8. For example, if the third information indicates "1", it may mean that K should be applied, and if it indicates "0", it may mean that K should not be applied.

[0221] Third-party information can be transported via DCI, such as DCI 0_0 for scheduling PUSCH. Third-party information can also be transported via RAR.

[0222] Example 3: The first transmission method before setting dedicated parameters for the terminal device includes TBS scaling of PDSCH.

[0223] Currently, before setting dedicated parameters for the terminal device, only some PDSCHs support TBS scaling, including PDSCHs scrambled with P-RNTI, RA-RNTI, or MsgB-RNTI and scheduled with CRC DCI 1_0, and since TBS can be reduced to a maximum of 1 / 4 of the original, the improvement in coverage performance is limited. Therefore, in embodiments of this disclosure, before setting dedicated parameters for the terminal device, there is at least one PDSCH that supports TBS scaling (e.g., Msg2 PDSCH) or a PDSCH that supports a smaller TBS scaling factor (e.g., Msg2 PDSCH), thereby further improving downlink coverage performance.

[0224] In an embodiment of the present disclosure, a PDSCH repeated transmission process before setting dedicated parameters of a terminal device is shown in FIG. 15, which is applied to a wireless communication system including the terminal device and a network device and includes the following.

[0225] In S1501, the network device transmits first information to the terminal device, and the first information is used for at least one of the following: the network device supports transmitting PDSCH based on TBS scaling of PDSCH before dedicated parameters are set for the terminal device, and indicating parameters of TBS scaling of PDSCH.

[0226] In S1502, the terminal device transmits second information to the network device, and the second information is used for at least one of the following: requesting to receive PDSCH based on TBS scaling of PDSCH, indicating the ability to receive PDSCH based on TBS scaling of PDSCH, requesting a PDSCH TBS scaling factor.

[0227] In S1503, the network device transmits third information to the terminal device, and the third information is used to determine a target PDSCH TBS scaling factor.

[0228] In an embodiment of the present disclosure, when the network device transmits first information to the terminal device and the first information indicates that the network device supports transmitting PDSCH based on TBS scaling of PDSCH for coverage enhancement before dedicated parameters are set for the terminal device, the downlink coverage performance before setting the dedicated parameters of the terminal device can be improved, thereby avoiding a situation where the terminal device cannot access the network.

[0229] First, the network device transmits first information to the terminal device, and the first information is used to indicate that the network device supports transmitting the PDSCH based on the TBS scaling of the PDSCH before the dedicated parameters are set for the terminal device. For example, if the first parameter is included in the first information or the first parameter is included in the first information and is set to "enable", it can be meant that the network device supports transmitting the PDSCH based on the TBS scaling of the PDSCH before the dedicated parameters of the terminal device are set.

[0230] In some embodiments, the first information also includes a second parameter, and the second parameter is a parameter for the repeated transmission of the PDSCH.

[0231] In some embodiments, the second parameter includes at least one of the following: a random access resource associated with the TBS scaling of the PDSCH, an RSRP threshold corresponding to the TBS scaling of the PDSCH, a PDSCH TBS scaling factor, and a set of PDSCH TBS scaling factors.

[0232] In embodiments of the present disclosure, random access resources are used by a terminal device to perform random access procedures. For example, based on a competition-based PRACH preamble and a competition-free PRACH preamble provided during random access, the first information may provide a preamble for repeated transmission of a PDSCH and a PRACH preamble for TBS scaling of a PDSCH, respectively (see Figure 16). If the PRACH preamble selected by the terminal device is associated only with PDSCH TBS scaling, this may mean that the terminal device requests the network device to receive a PDSCH based on PDSCH TBS scaling and / or indicates its ability to receive a PDSCH based on PDSCH TBS scaling. If the PRACH preamble selected by the terminal device is associated with both TBS scaling of the PDSCH and repeated transmission of the PDSCH, it can mean that the terminal device requests the network device to receive the PDSCH based on TBS scaling of the PDSCH and / or indicates its ability to receive the PDSCH based on TBS scaling of the PDSCH, and also requests the network device to receive the PDSCH based on repeated transmission of the PDSCH and / or indicates its ability to receive the PDSCH based on repeated transmission of the PDSCH.

[0233] In embodiments of this disclosure, a terminal device determines, based on a reference signal received power (RSRP) threshold corresponding to the PDSCH's TBS scaling, whether to request and / or demonstrate the ability to receive the PDSCH based on the PDSCH's TBS scaling, and / or request a PDSCH TBS scaling factor. For example, if the reference signal received power (RSRP) threshold corresponding to the PDSCH's TBS scaling is -126 dBm, then if the RSRP measured by the terminal device is lower than the RSRP threshold (-126 dBm), the terminal device can initiate a random access procedure via the random access resource associated with the PDSCH's TBS scaling. In other words, the terminal device can request the network device to receive the PDSCH based on the PDSCH's TBS scaling, and / or demonstrate the ability to receive the PDSCH based on the PDSCH's TBS scaling, and / or request a PDSCH TBS scaling factor.

[0234] In embodiments of this disclosure, the PDSCH TBS scaling factor may be carried in the first information or agreed upon in a protocol (i.e., default) between the network device and the terminal device. The PDSCH TBS scaling factor is valid only for terminals that request to receive a PDSCH based on the TBS scaling of the PDSCH, and / or indicate the ability to receive a PDSCH based on the TBS scaling of the PDSCH, and / or request the PDSCH TBS scaling factor. For example, the PDSCH TBS scaling factor provided in the first information may be S = 1, 0.5, 0.25, or 0.125. After the terminal device requests to receive a PDSCH based on the TBS scaling of the PDSCH, and / or indicates the ability to receive a PDSCH based on the TBS scaling of the PDSCH, and / or requests the PDSCH TBS scaling factor, the terminal device may apply the PDSCH TBS scaling factor S based on the TBS scaling scheme of the PDSCH.

[0235] In embodiments of this disclosure, the PDSCH TBS scaling coefficient set may be carried in the first information or agreed upon in a protocol (i.e., default) between the network device and the terminal device. The PDSCH TBS scaling coefficient set is valid only for terminals that request to receive a PDSCH based on the TBS scaling of the PDSCH, and / or indicate the ability to receive a PDSCH based on the TBS scaling of the PDSCH, and / or request the PDSCH TBS scaling coefficient. For example, the PDSCH TBS scaling coefficient set provided in the first information may be S = {1, 0.5, 0.25, 0.125}. After the terminal device requests to receive a PDSCH based on the TBS scaling of the PDSCH, and / or indicates the ability to receive a PDSCH based on the TBS scaling of the PDSCH, and / or requests the PDSCH TBS scaling coefficient, the terminal device can apply the PDSCH TBS scaling coefficient S1 based on the TBS scaling scheme of the PDSCH, where S1 is one numerical value in the set S.

[0236] The first information can be transmitted via system information, such as SIB1. The first information can also be transmitted via RAR messages.

[0237] Subsequently, the terminal device transmits second information to the network device, which is used for at least one of the following: requesting to receive a PDSCH based on the TBS scaling of the PDSCH; indicating the ability to receive a PDSCH based on the TBS scaling of the PDSCH; or requesting the PDSCH TBS scaling factor.

[0238] Secondary information can be transmitted via Msg1. For example, a random access procedure can be initiated on a random access resource associated with the PDSCH TBS scaling. Optionally, random access resources associated with the PDSCH TBS scaling are further associated with PDSCH TBS scaling factors. For example, if different random access resources are associated with different PDSCH TBS scaling factors, such as 1, 0.5, 0.25, or 0.125, the terminal device can choose to initiate a random access procedure on a specific random access resource and request the corresponding PDSCH TBS scaling factor from the network device.

[0239] The second piece of information can also be transmitted via Msg3, and the following solutions are possible:

[0240] In one embodiment, second information can be transmitted via MAC CE.

[0241] For example, a bit in the payload of the first MAC CE can be used to carry second information. If this bit is set to 1, it can mean requesting the reception of the PDSCH based on the PDSCH's TBS scaling, and / or indicating the ability to receive the PDSCH based on the PDSCH's TBS scaling. If this bit is set to 0, it can mean not requesting the reception of the PDSCH based on the PDSCH's TBS scaling, and / or indicating not the ability to receive the PDSCH based on the PDSCH's TBS scaling. Optionally, two bits in the payload of the first MAC CE can be used to request the PDSCH TBS scaling factor. For example, the bit field values ​​"00", "01", "10", and "11" can represent the PDSCH TBS scaling factor of 1, 0.5, 0.25, or 0.125, respectively.

[0242] Additionally, for example, second information can be carried via a second MAC CE. The second MAC CE corresponds to one LCID and has a payload size of 0. If a terminal device sends a second MAC CE in Msg3, it may mean requesting the reception of a PDSCH based on the PDSCH's TBS scaling, and / or indicating its ability to receive a PDSCH based on the PDSCH's TBS scaling. If a terminal device does not send a second MAC CE in Msg3, it may mean not requesting the reception of a PDSCH based on the PDSCH's TBS scaling, and / or indicating not its ability to receive a PDSCH based on the PDSCH's TBS scaling. Optionally, a third MAC CE with a different LCID can be introduced and associated with a different PDSCH TBS scaling factor, e.g., 1, 0.5, 0.25, or 0.125. A terminal device can request a PDSCH TBS scaling factor corresponding to a network device by sending a third MAC CE associated with a PDSCH TBS scaling factor in Msg3.

[0243] Additionally, for example, second information can be carried via a second MAC CE and a fourth MAC CE. Each of the second and fourth MAC CEs corresponds to one LCID, and both have a payload size of 0. When a terminal device transmits the second MAC CE in Msg3, it can mean requesting the reception of a PDSCH based on the PDSCH's TBS scaling, and / or indicating its ability to receive a PDSCH based on the PDSCH's TBS scaling. When a terminal device transmits the fourth MAC CE in Msg3, it can mean not requesting the reception of a PDSCH based on the PDSCH's TBS scaling, and / or indicating not its ability to receive a PDSCH based on the PDSCH's TBS scaling. Optionally, a third MAC CE with a different LCID can be introduced and associated with a different PDSCH TBS scaling factor, e.g., 1, 0.5, 0.25, or 0.125. A terminal device can request a PDSCH TBS scaling factor corresponding to a network device by transmitting a third MAC CE associated with a PDSCH TBS scaling factor in Msg3.

[0244] In another embodiment, second information can be carried via radio resource control (RRC) signaling. For example, a first reserved bit field in the RRC signaling corresponding to an existing Msg3 can be used to request and / or indicate the ability to receive a PDSCH based on the PDSCH's TBS scaling. Optionally, the number of repetitions of the PDSCH transmission can be carried via a second reserved bit field in the RRC signaling. For example, the values ​​"00", "01", "10", and "11" in the second reserved bit field can represent PDSCH TBS scaling factors of 1, 0.5, 0.25, and 0.125, respectively.

[0245] In another embodiment, the second information can be carried via an LCID corresponding to a common control channel (CCCH). Typically, CCCHs have two channel lengths: 48 bits and 64 bits. Therefore, the CCCH can specifically include a first common control channel (CCCH) 1 (channel length 48 bits) and / or a second common control channel (CCCH) 2 (channel length 64 bits), where the LCIDs corresponding to CCCH1 and CCCH2 are unused LCIDs. A subsequent terminal device can determine the corresponding CCCH based on the first transmission method and the required channel length. If the terminal device satisfies the first condition, the CCCH SDU transmitted in Msg3 is the SDU corresponding to CCCH1 or CCCH2. Otherwise, the CCCH SDU transmitted in Msg3 is the SDU corresponding to CCCH3 (the LCID corresponding to CCCH3 is a used LCID). CCCH SDUs are distinguished by different LCIDs, which are included in the MAC subheader located before the CCCH SDU. The first condition includes requesting and / or demonstrating the ability to receive PDSCH based on PDSCH TBS scaling. Optionally, a first common control channel (CCCH) 1 or a second common control channel (CCCH) 2 with different LCIDs can be introduced and associated with different PDSCH transmission repetition counts, e.g., 2 / 4 / 8. A terminal device can request a corresponding PDSCH transmission repetition count for a network device by sending an SDU corresponding to CCCH1 or CCCH2 associated with the PDSCH transmission repetition count in Msg3.

[0246] In another embodiment, second information can be carried via a first reserved bit field in the MAC subheader. For example, if the first reserved bit field is set to 1, it may mean requesting and / or indicating the ability to receive a PDSCH based on the PDSCH's TBS scaling. Optionally, the number of repetitions of the PDSCH transmission can be carried via a second reserved bit field in the MAC subheader. For example, the values ​​"00", "01", "10", and "11" in the second reserved bit field may represent PDSCH TBS scaling factors of 1, 0.5, 0.25, or 0.125, respectively.

[0247] Finally, if the terminal device applies a PDSCH TBS scaling factor set, the network device sends third information to the terminal device, which is used to determine the PDSCH TBS scaling factor that the PDSCH TBS scaling will ultimately apply. For example, after the terminal device requests and / or indicates its ability to receive a PDSCH based on PDSCH TBS scaling, the network device may further determine the third information based on the PDSCH TBS scaling factor set provided in the first information or the default set in the protocol, e.g., S={1,0.5,0.25,0.125}.

[0248] If the number of elements provided in the first information, or included in the default PDSCH TBS scaling coefficient set S, is variable, then the bit width P of the bit field required by the third information will also be different. To ensure that the terminal device and the network device have the same understanding of the bit field of the third information,

number

number

[0249] For example, when the PDSCH TBS scaling factor set S = {1, 0.5, 0.25}, the mapping relationship between the bit field of the third information and the PDSCH TBS scaling factor is shown in Table 5.

[0250] Mapping relationship between the bit field of the third information and the PDSCH TBS scaling factor

Table 5

[0251] Value 2 indicated by the bit field of the third information P Considering that the value 2 indicated by the bit field may be greater than the number of candidate values in the PDSCH TBS scaling factor set S, in order to ensure that the terminal device and the network device always have the same recognition of the PDSCH TBS scaling factor indicated by the bit field, the following need to be specified. The terminal does not expect a value other than the PDSCH TBS scaling factor set S to be indicated. Alternatively, when a value other than the PDSCH TBS scaling factor set S is indicated to the terminal, the TBS scaling of the PDSCH may apply the default PDSCH TBS scaling factor or receive a PDSCH transmission without TBS scaling.

[0252] For example, when the network device uses 2 bits to indicate the PDSCH TBS scaling factor and provides the PDSCH TBS scaling factor set S = {1, 0.5, 0.25}, at this time the value 2 indicated by the bit field 2Since =4 is greater than the number of candidate values ​​in S (3), the following must be specified: If a terminal device requests a network device to receive a PDSCH based on PDSCH TBS scaling and / or indicates the ability to receive a PDSCH based on PDSCH TBS scaling, the terminal device does not expect a value other than S={1,0.5,0.25}, for example, bit field "11". Alternatively, if the bit field indicates "11", PDSCH TBS scaling may apply the default PDSCH TBS scaling factor, for example 2, or a PDSCH transmission without TBS scaling may be received.

[0253] Furthermore, as an option, if a terminal device applies one PDSCH TBS scaling factor, the network device sends third information to the terminal device so that the terminal device determines the PDSCH TBS scaling factor to ultimately apply based on the third information. For example, after a terminal device requests and / or indicates its ability to receive a PDSCH based on PDSCH TBS scaling, the network device needs to receive third information based on the PDSCH TBS scaling factor provided in the first or second information, or the default PDSCH TBS scaling factor in the protocol, e.g., S=0.5 / 0.25 / 0.125, to determine whether to ultimately apply the PDSCH TBS scaling factor. For example, if the third information indicates "1", it may mean to apply S, and if it indicates "0", it may mean not to apply S.

[0254] The third information can be transmitted via DCI, for example, via DCI 1_0 for scheduling PDSCH. The third information can also be transmitted via RAR messages.

[0255] The wireless communication method according to the embodiments of this disclosure provides a solution for enhancing coverage before setting dedicated parameters for the terminal device, and can be implemented as follows:

[0256] 1) The network device transmits first information. This allows the terminal device to recognize whether the network device supports PDSCH repetition transmission, PDSCH TBS scaling, and PUSCH repetition transmission, and further recognize related information such as the number of transmission repetitions and the TBS scaling coefficient.

[0257] 2) The terminal device transmits the second piece of information. This allows the network device to recognize whether the terminal device has the need for or ability to enhance coverage, and to perform reasonable resource scheduling.

[0258] 3) The network device transmits third information. This is used to determine the number of transmission repetitions and the PDSCH TBS scaling factor that will ultimately be applied to the PDSCH / PUSCH. This ensures that the network device and the terminal device have the same understanding of the number of transmission repetitions and the TBS scaling factor.

[0259] The wireless communication method according to the embodiments of this disclosure is applicable to any system to which a solution for enhancing coverage is applied, such as an NTN system.

[0260] Preferred embodiments of this disclosure have been described in detail with reference to the accompanying drawings. However, this disclosure is not limited to the specific details of the embodiments described above. Within the scope of the technical concept of this disclosure, various simple modifications can be made to the technical solutions of this disclosure, and such simple modifications are included in the scope of this disclosure. For example, various specific technical features described in the specific embodiments described above can be combined in any suitable way without contradiction. To avoid unnecessary repetition, this disclosure does not further detail various possible combinations. As another example, any combination of the various embodiments of this disclosure is possible, and such combinations are also considered part of this disclosure as long as they do not contradict the idea of ​​this disclosure. As yet another example, provided that they do not contradict each other, various embodiments and / or technical features described in this disclosure can be combined in any way with the relevant technology. Technical solutions obtained by such combinations are also included in the scope of this disclosure.

[0261] Furthermore, in embodiments of the various methods of this disclosure, it should be understood that the size of the sequence number in the aforementioned process does not imply the order of execution. The order of execution of each process should be determined based on its function and inherent logic and does not constitute any limitation on the implementation processes in embodiments of this disclosure. Furthermore, in embodiments of this disclosure, the terms “downlink,” “uplink,” and “sidelink” are used to indicate the direction of signal or data transmission. Here, the term “downlink” is used to indicate that the direction of signal or data transmission is the first direction, from a station in a cell to a user device. The term “uplink” is used to indicate that the direction of signal or data transmission is the second direction, from a user device in a cell to a base station. The term “sidelink” is used to indicate that the direction of signal or data transmission is the third direction, from user device 1 to user device 2. For example, “downlink signal” indicates that the direction of signal transmission is the first direction. Furthermore, in embodiments of this disclosure, the terms “and / or” are used solely to indicate a relational relationship for describing the relevant subjects, indicating that three types of relationships may exist. Specifically, "A and / or B" can refer to three cases: the existence of A independently, the existence of both A and B, or the existence of B independently. In addition, the letter " / " in this disclosure generally indicates that the preceding and following related objects form an "or" relationship.

[0262] Figure 17 is a schematic diagram of the components of a wireless communication device according to an embodiment of the present disclosure, which is applied to a network device. As shown in Figure 17, the wireless communication device 1700 includes a first transmitting unit 1701.

[0263] The first transmission unit 1701 is configured to enable a network device to transmit first information to a terminal device, the first information being used to indicate whether the network device supports receiving or transmitting a first transmission based on a first transmission scheme before dedicated parameters are set on the terminal device, the first transmission scheme being used for coverage enhancement.

[0264] In some embodiments, the first transmission method includes at least one of the following: repeated transmission of a physical downlink shared channel (PDSCH), transmission block size (TBS) scaling of a PDSCH, and repeated transmission of a physical uplink shared channel (PUSCH).

[0265] In some embodiments, the first transmission includes at least one of a transmission during a random access procedure and a transmission after the random access procedure and before dedicated parameters are set on the terminal device.

[0266] In some embodiments, the first information is conveyed via one of system information or a random access response (RAR) message.

[0267] In some embodiments, the first information includes a first parameter used to indicate whether the network device supports receiving or transmitting the first transmission based on the first transmission scheme before a dedicated parameter is set for the terminal device.

[0268] In some embodiments, the first information includes a second parameter, the second parameter being a parameter of the first transmission method.

[0269] In some embodiments, if the first transmission method includes PDSCH repetition transmission, the second parameter includes at least one of a random access resource associated with the PDSCH repetition transmission, a reference signal received power (RSRP) threshold corresponding to the PDSCH repetition transmission, the number of repetitions of the PDSCH transmission, and a set of PDSCH transmission repetition counts.

[0270] In some embodiments, if the first transmission method includes TBS scaling of a PDSCH, the second parameter includes at least one of the following: a random access resource associated with the TBS scaling of the PDSCH, an RSRP threshold corresponding to the TBS scaling of the PDSCH, a PDSCH TBS scaling coefficient, and a set of PDSCH TBS scaling coefficients.

[0271] In some embodiments, if the first transmission method includes a PUSCH repetition transmission, the second parameter includes at least one of a random access resource associated with the PUSCH repetition transmission, a reference signal received power (RSRP) threshold corresponding to the PUSCH repetition transmission, the number of repetitions of the PUSCH transmission, and a set of PUSCH transmission repetition counts.

[0272] In some embodiments, a first receiving unit is further included, configured to allow the network device to receive second information transmitted from the terminal device, the second information being used for at least one of the following: requesting to receive or transmit the first transmission based on the first transmission scheme; indicating the ability to receive or transmit the first transmission based on the first transmission scheme; or requesting a transmission coefficient. The transmission coefficient includes the number of transmission repetitions and / or a scaling coefficient.

[0273] In some embodiments, the second information is conveyed via one of message 1 (Msg1) or message 3 (Msg3).

[0274] In some embodiments, the second information is included in Msg3 in one of the following: a media access control (MAC) control element (CE), radio resource control (RRC) signaling, a logical channel identifier (LCID) corresponding to a common control channel (CCCH), or a reserved bit in the MAC subheader.

[0275] In some embodiments, the first transmission unit 1701 is further configured so that the network device transmits third information to the terminal device, the third information being used to determine a target transmission coefficient, the target transmission coefficient being a transmission coefficient to be applied by the first transmission method.

[0276] In some embodiments, the target transmission coefficient is one of the following: a first transmission coefficient, wherein the first transmission coefficient is a transmission coefficient within the first transmission coefficient set; a second transmission coefficient, wherein the second transmission coefficient is a default transmission coefficient; or a third transmission coefficient, wherein the third transmission coefficient is a transmission coefficient carried by the first or second information.

[0277] In some embodiments, the first transmission coefficient set is either the transmission coefficient set carried by the first information or a default transmission coefficient set.

[0278] In some embodiments, if the third information is used to indicate the first transmission coefficient, the target transmission coefficient is the first transmission coefficient.

[0279] In some embodiments, if the third information is used to indicate a value other than the first set of transmission coefficients, the target transmission coefficient is the second transmission coefficient, or the first transmission does not apply the first transmission method.

[0280] In some embodiments, the terminal device does not expect the third information to indicate a value other than the first transmission coefficient set.

[0281] In some embodiments, the third information is used to indicate whether the first transmission method applies the second or third transmission coefficient.

[0282] In some embodiments, the target transmission coefficient is the second or third transmission coefficient, if the third information is used to instruct the first transmission method to apply the second or third transmission coefficient.

[0283] In some embodiments, if the third information is used to indicate that the first transmission method does not apply the second or third transmission coefficient, then the first transmission does not apply the first transmission method.

[0284] In some embodiments, the third information is conveyed via one of the following: downlink control information (DCI) or RAR messages.

[0285] In some embodiments, if the first transmission method includes PDSCH repetition transmission, the transmission coefficient may include the number of PDSCH transmission repetitions.

[0286] If the first transmission method includes TBS scaling of PDSCH, the transmission coefficient may include the TBS scaling coefficient.

[0287] If the first transmission method includes repeated push transmission, the transmission coefficient may include the number of push transmission repetitions.

[0288] Figure 18 is a schematic diagram of the components of a wireless communication device according to an embodiment of the present disclosure, which is applied to a terminal device. As shown in Figure 18, the wireless communication device 1800 includes a second receiving unit 1801.

[0289] The second receiving unit 1801 is configured to receive first information transmitted by a terminal device from a network device, the first information being used to indicate whether the network device supports receiving or transmitting a first transmission based on a first transmission method before dedicated parameters are set for the terminal device, the first transmission method being used for coverage enhancement.

[0290] In some embodiments, the first transmission method includes at least one of the following: repeated transmission of a physical downlink shared channel (PDSCH), transmission block size (TBS) scaling of a PDSCH, and repeated transmission of a physical uplink shared channel (PUSCH).

[0291] In some embodiments, the first transmission includes at least one of a transmission during a random access procedure and a transmission after the random access procedure and before dedicated parameters are set on the terminal device.

[0292] In some embodiments, the first information is conveyed via one of system information or a random access response (RAR) message.

[0293] In some embodiments, the first information includes a first parameter used to indicate whether the network device supports receiving or transmitting the first transmission based on the first transmission scheme before a dedicated parameter is set for the terminal device.

[0294] In some embodiments, the first information includes a second parameter, the second parameter being a parameter of the first transmission method.

[0295] In some embodiments, if the first transmission method includes PDSCH repetition transmission, the second parameter includes at least one of a random access resource associated with the PDSCH repetition transmission, a reference signal received power (RSRP) threshold corresponding to the PDSCH repetition transmission, the number of repetitions of the PDSCH transmission, and a set of PDSCH transmission repetition counts.

[0296] In some embodiments, if the first transmission method includes TBS scaling of a PDSCH, the second parameter includes at least one of the following: a random access resource associated with the TBS scaling of the PDSCH, an RSRP threshold corresponding to the TBS scaling of the PDSCH, a PDSCH TBS scaling coefficient, and a set of PDSCH TBS scaling coefficients.

[0297] In some embodiments, if the first transmission method includes a PUSCH repetition transmission, the second parameter includes at least one of a random access resource associated with the PUSCH repetition transmission, a reference signal received power (RSRP) threshold corresponding to the PUSCH repetition transmission, the number of repetitions of the PUSCH transmission, and a set of PUSCH transmission repetition counts.

[0298] In some embodiments, a second transmitting unit is further included, configured to cause the terminal device to transmit second information to the network device, the second information being used for at least one of the following: requesting to receive or transmit the first transmission based on the first transmission scheme; indicating the ability to receive or transmit the first transmission based on the first transmission scheme; or requesting a transmission coefficient. The transmission coefficient includes the number of transmission repetitions and / or a scaling coefficient.

[0299] In some embodiments, the second information is conveyed via one of message 1 (Msg1) or message 3 (Msg3).

[0300] In some embodiments, the second information is included in Msg3 in one of the following: a media access control (MAC) control element (CE), radio resource control (RRC) signaling, an LCID corresponding to a common control channel (CCCH), or a reserved bit in the MAC subheader.

[0301] In some embodiments, the second receiving unit 1801 is further configured to allow the terminal device to receive third information transmitted from the network device, the third information being used to determine a target transmission coefficient, the target transmission coefficient being the transmission coefficient to be applied by the first transmission method.

[0302] In some embodiments, the target transmission coefficient is one of the following: a first transmission coefficient, wherein the first transmission coefficient is a transmission coefficient within the first transmission coefficient set; a second transmission coefficient, wherein the second transmission coefficient is a default transmission coefficient; or a third transmission coefficient, wherein the third transmission coefficient is a transmission coefficient carried by the first or second information.

[0303] In some embodiments, the first transmission coefficient set is either the transmission coefficient set carried by the first information or a default transmission coefficient set.

[0304] In some embodiments, if the third information is used to indicate the first transmission coefficient, the target transmission coefficient is the first transmission coefficient.

[0305] In some embodiments, if the third information is used to indicate a value other than the first set of transmission coefficients, the target transmission coefficient is the second transmission coefficient, or the first transmission does not apply the first transmission method.

[0306] In some embodiments, the terminal device does not expect the third information to indicate a value other than the first transmission coefficient set.

[0307] In some embodiments, the third information is used to indicate whether the first transmission method applies the second or third transmission coefficient.

[0308] In some embodiments, the target transmission coefficient is the second or third transmission coefficient, if the third information is used to instruct the first transmission method to apply the second or third transmission coefficient.

[0309] In some embodiments, if the third information is used to indicate that the first transmission method does not apply the second or third transmission coefficient, then the first transmission does not apply the first transmission method.

[0310] In some embodiments, the third information is conveyed via one of the following: downlink control information (DCI) or RAR messages.

[0311] In some embodiments, if the first transmission method includes PDSCH repetition transmission, the transmission coefficient may include the number of PDSCH transmission repetitions.

[0312] If the first transmission method includes TBS scaling of PDSCH, the transmission coefficient may include the TBS scaling coefficient.

[0313] If the first transmission method includes repeated push transmission, the transmission coefficient may include the number of push transmission repetitions.

[0314] Those skilled in the art should understand that the relevant descriptions relating to wireless communication devices in the embodiments of this disclosure can be understood by referring to the relevant descriptions relating to wireless communication methods in the embodiments of this disclosure.

[0315] Figure 19 is a schematic diagram of a communication device 1900 according to an embodiment of the present disclosure. The communication device may be a terminal device or a network device. The communication device 1900 shown in Figure 19 includes a processor 1910, which can call and execute a computer program from memory and implement the method in the embodiment of the present disclosure. As shown in Figure 19, the communication device 1900 may further include a memory 1920. Here, the processor 1910 can call and execute a computer program from the memory 1920 to implement the method in the embodiment of this disclosure.

[0316] Here, the memory 1920 may be a separate device independent of the processor 1910, or it may be integrated into the processor 1910.

[0317] As shown in Figure 19, the communication device 1900 further includes a transceiver 1930, and the processor 1910 can control the transceiver 1930 to communicate with other devices. Specifically, the transceiver 1930 can transmit information or data to other devices and receive information or data from other devices.

[0318] Here, the transceiver 1930 may include a transmitter and a receiver. The transceiver 1930 may also include one or more antennas.

[0319] Optionally, the communication device 1900 may be a network device in particular in embodiments of the present disclosure. The communication device 1900 may implement a corresponding process implemented by the network device in each method of embodiments of the present disclosure, which is not repeated in this disclosure for the sake of brevity.

[0320] Optionally, the communication device 1900 may be, in particular, a mobile terminal / terminal device in the embodiments of this disclosure. The communication device 1900 may perform the corresponding processes performed by the mobile terminal / terminal device in each method of the embodiments of this disclosure. For brevity, this disclosure will not repeat.

[0321] Figure 20 is a schematic diagram of a chip according to an embodiment of the present disclosure. The chip 2000 shown in Figure 20 comprises a processor 2010 which can call and execute a computer program from memory to perform the method in the embodiment of the present disclosure.

[0322] As shown in Figure 20, the chip 2000 may further include memory 2020. The processor 2010 can call and execute a computer program from memory 2020 to implement the method in the embodiments of this disclosure. Here, memory 2020 may be a separate device independent of processor 2010, or it may be integrated into processor 2010.

[0323] Optionally, chip 2000 may further include an input interface 2030. Processor 2010 can control the input interface 2030 to communicate with other devices or chips. Specifically, the input interface 2030 can acquire information or data from other devices or chips.

[0324] Optionally, chip 2000 may further include an output interface 2040. Processor 2010 can control the output interface 2040 to communicate with other devices or chips. Specifically, the output interface 2040 can output information or data to other devices or chips.

[0325] Optionally, the chip may be applied to a network device in an embodiment of the present disclosure. The chip may also perform the corresponding processing performed by the network device in each method of the embodiment of the present disclosure. For brevity, these are not repeated in this disclosure.

[0326] Optionally, the chip may be applied to a mobile terminal / terminal device in an embodiment of the present disclosure, and the chip may perform the corresponding processing performed by the mobile terminal / terminal device in each method of the embodiment of the present disclosure, which for brevity will not be repeated here.

[0327] It should be understood that the chip in the embodiments of this disclosure may also be referred to as a system-level chip, system chip, chip system, or system-on-a-chip.

[0328] Figure 21 is a schematic block diagram of a communication system 2100 according to an embodiment of the present disclosure. As shown in Figure 21, the communication system 2100 includes a terminal device 2110 and a network device 2120.

[0329] Here, the terminal device 2110 may be configured to implement the corresponding function performed by the terminal device in the above method, and the network device 2120 may be configured to implement the corresponding function performed by the network device in the above method. For the sake of brevity, these will not be repeated here.

[0330] It should be understood that the processor in the embodiments of this disclosure is an integrated circuit chip having signal processing capabilities. In implementation, each operation of the embodiments of the above method may be achieved by hardware integrated logic circuits or by software-form instructions within the processor. The processor may be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components. The processor may implement or execute the methods, operations, and logic block diagrams disclosed in embodiments of this disclosure. The general-purpose processor may be a microprocessor or any conventional processor, etc. The operations of the methods disclosed in embodiments of this disclosure may be performed directly by a hardware decoding processor or by a combination of hardware and software modules within the decoding processor. Software modules may reside in random access memory (RAM), flash memory, read-only memory (ROM), programmable ROM (PROM), electrically erasable programmable memory, registers, and other storage media mature in the art. The storage media reside in memory, and the processor reads information from memory and, in combination with the hardware, performs operations using each of the methods described above.

[0331] The memory in embodiments of this disclosure may be temporary memory or non-temporary memory, or may include both temporary and non-temporary memory. Non-temporary memory may be ROM, PROM, Erasable PROM (EPROM), Electrically Erasable PROM (EEPROM), or flash memory. Temporary memory may be RAM used as an external cache. Many forms of RAM are available, in an illustrative but not limited manner. For example, static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchlink DRAM (SLDRAM), direct rambus RAM (DR RAM), etc. It should be noted that the memory in the systems and methods described in this disclosure includes, but is not limited to, these and other appropriate types of memory.

[0332] It should be understood that the above-mentioned memory is illustrative and not an exhaustive description. For example, the memory in embodiments of this disclosure may be SRAM, DRAM, SDRAM, DDR SDRAM, ESDRAM, SLDRAM, DR RAM, etc. In other words, the memory in embodiments of this disclosure is intended to include, but is not limited to, these and other appropriate types of memory.

[0333] Embodiments of this disclosure further provide a computer-readable storage medium configured to store computer programs.

[0334] Optionally, a computer-readable storage medium may be applied to the network device in the embodiments of the present disclosure. A computer program enables the computer to execute the corresponding process implemented by the network device in each method of the embodiments of the present disclosure, which is not repeated in the present disclosure for the sake of simplicity.

[0335] Optionally, a computer-readable storage medium may be applied to the mobile terminal / terminal device in the embodiments of the present disclosure. A computer program, which for brevity is not repeated in the present disclosure, enables the computer to perform the corresponding processing implemented by the mobile terminal / terminal device in each of the embodiments of the present disclosure.

[0336] According to embodiments of this disclosure, a computer program product is further provided, which includes computer program instructions.

[0337] Optionally, computer program products may be applied to network devices in embodiments of this disclosure. Computer program instructions enable a computer to execute corresponding processes implemented by network devices in each method of embodiments of this disclosure. For brevity, repetition is omitted here.

[0338] Optionally, a computer program product may be applied to a mobile terminal / terminal device in an embodiment of the disclosure. Computer program instructions, which are not repeated in this disclosure for the sake of simplicity, enable the computer to perform the corresponding processing implemented by the mobile terminal / terminal device in each method of the embodiment of the disclosure.

[0339] According to embodiments of this disclosure, the computer program further provides

[0340] Optionally, a computer program, when applied to a network device in an embodiment of the disclosure and executed on a computer, enables the computer to perform the corresponding processing implemented by the network device in each method of the embodiment of the disclosure. For brevity, this disclosure will not repeat.

[0341] Optionally, a computer program may be applied to a mobile terminal / terminal device in an embodiment of the disclosure. When executed on a computer, this computer program enables the computer to perform the corresponding processing implemented by the mobile terminal / terminal device in each method of the embodiment of the disclosure. For brevity, these processing will not be described repeatedly in this disclosure.

[0342] Those skilled in the art will understand that various exemplary units and algorithmic operations described in connection with the embodiments disclosed herein can be implemented in electronic hardware or in combination of computer software and electronic hardware. Whether such functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art may implement the described functions using different methods depending on the specific application, but such implementations should not be considered beyond the scope of this disclosure.

[0343] Those skilled in the art will clearly understand that, for the sake of convenience and brevity of explanation, the specific operating processes of the systems, apparatus, and units described above can be found by referring to the corresponding processes in the embodiments of the aforementioned methods, which are not repeated in this disclosure.

[0344] In the various embodiments provided in this disclosure, it should be understood that the disclosed systems, devices, and methods may be implemented in other ways. For example, the embodiments of the devices described above are merely examples. For example, the division of units is merely a logical functional division, and other division methods may be employed in practice. For example, multiple units or components may be integrated or combined into another system, or some functions may be omitted or not implemented. Furthermore, the coupling, direct coupling, and communication connections between the illustrated or described units and components may be indirect coupling or communication connections via some interface, device, or unit. These may take electrical, mechanical, or other forms.

[0345] Units shown as separate components may or may not be physically separated, and components shown as units may or may not be physical units. In other words, units and components may be located in one place or distributed across multiple network units. Depending on the actual needs, some or all of the units can be selected to achieve the objectives of the solution in the embodiment.

[0346] Furthermore, the functional units in various embodiments of this disclosure may be integrated into a single processing unit, exist physically separately, or two or more units may be integrated into a single unit.

[0347] These functions may be implemented in the form of software function units and, if sold or used as standalone products, may be stored on computer-readable storage media. Based on this understanding, the essence of the technical solutions of this disclosure, or parts of the technical solutions that contribute to related technologies, may be embodied in the form of software products. Such computer software products are stored on storage media and include a number of instructions used to enable computer devices (such as personal computers, servers, network devices, etc.) to perform all or part of the operations of the methods described in various embodiments of this disclosure. The storage media may include Universal Serial Bus (USB) flash drives, removable hard disks, read-only memory (ROM), random access memory (RAM), magnetic disks, optical disks, or other media capable of storing program code.

[0348] The above description represents only specific embodiments of the Disclosure, but the scope of protection of the Disclosure is not limited thereto. Any modification or substitution that a person skilled in the art could readily foresee within the technical scope disclosed herein is included in the scope of protection of the Disclosure. Therefore, the scope of protection of the Disclosure shall be subject to the scope of protection of the claims.

Claims

1. A wireless communication method, A wireless communication method comprising a network device transmitting first information to a terminal device, the first information being used to indicate whether the network device supports receiving or transmitting a first transmission based on a first transmission scheme before dedicated parameters are set on the terminal device, the first transmission scheme being used for coverage enhancement.

2. The first transmission method is, Repeated transmission of physical downlink shared channel (PDSCH), Scaling of the transmission block size (TBS) of PDSCH, The process includes at least one of the following: repeated transmission of a physical uplink shared channel (PUSCH), The wireless communication method according to claim 1.

3. The first transmission is Transmission during random access procedures, The transmission includes at least one of the following: after a random access procedure and before dedicated parameters are set on the terminal device. The wireless communication method according to claim 1 or 2.

4. The first piece of information mentioned above is, System information, The message is carried by one of the following: Random Access Response (RAR) messages. The wireless communication method according to any one of claims 1 to 3.

5. The first information includes a first parameter, which indicates whether the network device supports receiving or transmitting the first transmission based on the first transmission method before a dedicated parameter is set on the terminal device. The wireless communication method according to any one of claims 1 to 4.

6. The first information includes a second parameter, the second parameter being a parameter of the first transmission method. The wireless communication method according to any one of claims 1 to 5.

7. If the first transmission method includes repeated transmission of a PDSCH, the second parameter includes at least one of the following: a random access resource associated with the repeated transmission of the PDSCH, a threshold value for the reference signal received power (RSRP) corresponding to the repeated transmission of the PDSCH, the number of repetitions of the PDSCH transmission, and a set of the number of repetitions of the PDSCH transmission. The wireless communication method according to claim 6.

8. If the first transmission method includes TBS scaling of a PDSCH, the second parameter includes at least one of the following: a random access resource associated with the TBS scaling of the PDSCH, a threshold for the RSRP corresponding to the TBS scaling of the PDSCH, a TBS scaling coefficient for the PDSCH, and a set of TBS scaling coefficients for the PDSCH. The wireless communication method according to claim 6.

9. If the first transmission method includes repeated transmission of PUSCH, the second parameter includes at least one of the following: a random access resource associated with the repeated transmission of PUSCH, a threshold value for the RSRP corresponding to the repeated transmission of PUSCH, the number of repetitions of the PUSCH transmission, and a set of the number of repetitions of the PUSCH transmission. The wireless communication method according to claim 6.

10. The wireless communication method further includes the network device receiving second information transmitted from the terminal device, and the second information is Requesting to receive or transmit the first transmission based on the first transmission method, To demonstrate the ability to receive or transmit the first transmission based on the first transmission method, The requirements include, at least one of the following: requiring a transmission coefficient that includes the number of transmission repetitions and / or a scaling factor, The wireless communication method according to any one of claims 1 to 9.

11. The second information mentioned above is, Message 1 (Msg1), Message 3 (Msg3) is delivered by one of the following: The wireless communication method according to claim 10.

12. The second information described above is, in Msg3, Media Access Control (MAC) control element (CE), Radio Resource Control (RRC) signaling, Logical channel identifier (LCID) corresponding to the Common Control Channel (CCCH), One of the reserved bits in the MAC subheader, The wireless communication method according to claim 11.

13. The wireless communication method further includes the network device transmitting third information to the terminal device, the third information being used to determine a target transmission coefficient, the target transmission coefficient being a transmission coefficient applied in the first transmission method. The wireless communication method according to any one of claims 1 to 12.

14. The aforementioned target transmission coefficient is A first transmission coefficient, wherein the first transmission coefficient is a transmission coefficient within the first transmission coefficient set. A second transmission coefficient, wherein the second transmission coefficient is the default transmission coefficient. A third transmission coefficient, wherein the third transmission coefficient is a transmission coefficient carried by the first information or the second information, is one of the following: The wireless communication method according to claim 13.

15. The first transmission coefficient set is, The transmission coefficient set conveyed by the first information, One of the default transmission coefficient sets, The wireless communication method according to claim 14.

16. If the third information indicates the first transmission coefficient, then the target transmission coefficient is the first transmission coefficient. The wireless communication method according to claim 14 or 15.

17. If the third information indicates a value outside the first transmission coefficient set, the target transmission coefficient is the second transmission coefficient, or the first transmission method is not applied to the first transmission. The wireless communication method according to claim 14 or 15.

18. The terminal device does not expect the third information to show a value outside the first transmission coefficient set. The wireless communication method according to any one of claims 14 to 16.

19. The third information indicates whether the second transmission coefficient or the third transmission coefficient is applied in the first transmission method. The wireless communication method according to claim 14.

20. If the third information indicates that the second transmission coefficient or the third transmission coefficient is applied in the first transmission method, then the target transmission coefficient is the second transmission coefficient or the third transmission coefficient. The wireless communication method according to claim 19.

21. If the third information indicates that the second or third transmission coefficient is not applied in the first transmission method, then the first transmission method is not applied to the first transmission. The wireless communication method according to claim 19.

22. The aforementioned third information is, Downlink Control Information (DCI), The message is carried by one of the following: Random Access Response (RAR) messages. The wireless communication method according to any one of claims 13 to 21.

23. If the first transmission method includes repeated transmission of a physical downlink shared channel (PDSCH), the transmission coefficient includes the number of PDSCH transmission repetitions; if the first transmission method includes scaling of the transmission block size (TBS) of the PDSCH, the transmission coefficient includes the TBS scaling coefficient; and if the first transmission method includes repeated transmission of a PUSCH, the transmission coefficient includes the number of PUSCH transmission repetitions. The wireless communication method according to any one of claims 10 to 22.

24. A wireless communication method, A wireless communication method comprising a terminal device receiving first information transmitted from a network device, the first information being used to indicate whether the network device supports receiving or transmitting a first transmission based on a first transmission scheme before dedicated parameters are set for the terminal device, the first transmission scheme being used for coverage enhancement.

25. The first transmission method is, Repeated transmission of physical downlink shared channel (PDSCH), Scaling of the transmission block size (TBS) of PDSCH, The process includes at least one of the following: repeated transmission of a physical uplink shared channel (PUSCH), The wireless communication method according to claim 24.

26. The first transmission is Transmission during random access procedures, The transmission includes at least one of the following: after a random access procedure and before dedicated parameters are set on the terminal device. The wireless communication method according to claim 24 or 25.

27. The first piece of information mentioned above is, System information, The message is carried by one of the following: Random Access Response (RAR) messages. The wireless communication method according to any one of claims 24 to 26.

28. The first information includes a first parameter, which indicates whether the network device supports receiving or transmitting the first transmission based on the first transmission method before a dedicated parameter is set on the terminal device. The wireless communication method according to any one of claims 24 to 27.

29. The first information includes a second parameter, the second parameter being a parameter of the first transmission method. The wireless communication method according to any one of claims 24 to 28.

30. If the first transmission method includes repeated transmission of a PDSCH, the second parameter includes at least one of the following: a random access resource associated with the repeated transmission of the PDSCH, a threshold value for the reference signal received power (RSRP) corresponding to the repeated transmission of the PDSCH, the number of repetitions of the PDSCH transmission, and a set of the number of repetitions of the PDSCH transmission. The wireless communication method according to claim 29.

31. If the first transmission method includes TBS scaling of a PDSCH, the second parameter includes at least one of the following: a random access resource associated with the TBS scaling of the PDSCH, a threshold for the RSRP corresponding to the TBS scaling of the PDSCH, a TBS scaling coefficient for the PDSCH, and a set of TBS scaling coefficients for the PDSCH. The wireless communication method according to claim 29.

32. If the first transmission method includes repeated transmission of PUSCH, the second parameter includes at least one of the following: a random access resource associated with the repeated transmission of PUSCH, a threshold value for the RSRP corresponding to the repeated transmission of PUSCH, the number of repetitions of the PUSCH transmission, and a set of the number of repetitions of the PUSCH transmission. The wireless communication method according to claim 29.

33. The wireless communication method further includes the terminal device transmitting second information to the network device, and the second information is Requesting to receive or transmit the first transmission based on the first transmission method, To demonstrate the ability to receive or transmit the first transmission based on the first transmission method, The requirements include, at least one of the following: requiring a transmission coefficient that includes the number of transmission repetitions and / or a scaling factor, The wireless communication method according to any one of claims 24 to 32.

34. The second information mentioned above is, Message 1 (Msg1), Message 3 (Msg3) is delivered by one of the following: The wireless communication method according to claim 33.

35. The second information described above is, in Msg3, Media Access Control (MAC) control element (CE), Radio Resource Control (RRC) signaling, Logical channel identifier (LCID) corresponding to the Common Control Channel (CCCH), One of the reserved bits in the MAC subheader, The wireless communication method according to claim 34.

36. The wireless communication method further includes the terminal device receiving third information transmitted from the network device, the third information being used to determine a target transmission coefficient, the target transmission coefficient being a transmission coefficient applied in the first transmission method. The wireless communication method according to any one of claims 24 to 35.

37. The aforementioned target transmission coefficient is A first transmission coefficient, wherein the first transmission coefficient is a transmission coefficient within the first transmission coefficient set. A second transmission coefficient, wherein the second transmission coefficient is the default transmission coefficient. A third transmission coefficient, wherein the third transmission coefficient is a transmission coefficient carried by the first information or the second information, is one of the following: The wireless communication method according to claim 36.

38. The first transmission coefficient set is, The transmission coefficient set conveyed by the first information, One of the default transmission coefficient sets, The wireless communication method according to claim 37.

39. If the third information indicates the first transmission coefficient, then the target transmission coefficient is the first transmission coefficient. The wireless communication method according to claim 37 or 38.

40. If the third information indicates a value outside the first transmission coefficient set, the target transmission coefficient is the second transmission coefficient, or the first transmission method is not applied to the first transmission. The wireless communication method according to claim 37 or 38.

41. The terminal device does not expect the third information to show a value outside the first transmission coefficient set. The wireless communication method according to any one of claims 37 to 39.

42. The third information indicates whether the second transmission coefficient or the third transmission coefficient is applied in the first transmission method. The wireless communication method according to claim 37.

43. If the third information indicates that the second transmission coefficient or the third transmission coefficient is applied in the first transmission method, then the target transmission coefficient is the second transmission coefficient or the third transmission coefficient. The wireless communication method according to claim 42.

44. If the third information indicates that the second or third transmission coefficient is not applied in the first transmission method, then the first transmission method is not applied to the first transmission. The wireless communication method according to claim 42.

45. The aforementioned third information is, Downlink Control Information (DCI), The message is carried by one of the following: Random Access Response (RAR) messages. The wireless communication method according to any one of claims 37 to 44.

46. If the first transmission method includes repeated transmission of a physical downlink shared channel (PDSCH), the transmission coefficient includes the number of PDSCH transmission repetitions; if the first transmission method includes scaling of the transmission block size (TBS) of the PDSCH, the transmission coefficient includes the TBS scaling coefficient; and if the first transmission method includes repeated transmission of a PUSCH, the transmission coefficient includes the number of PUSCH transmission repetitions. The wireless communication method according to any one of claims 33 to 45.

47. A wireless communication device applicable to a network device, A wireless communication device comprising a transmitting unit configured to transmit first information to a terminal device, wherein the first information is used to indicate whether the network device supports receiving or transmitting a first transmission based on a first transmission scheme before dedicated parameters are set on the terminal device, and the first transmission scheme is used for coverage enhancement.

48. A wireless communication device applicable to a terminal device, A wireless communication device comprising a receiving unit configured to receive first information transmitted from a network device, wherein the terminal device is used to indicate whether the network device supports receiving or transmitting a first transmission based on a first transmission method before dedicated parameters are set for the terminal device, and the first transmission method is used for coverage enhancement.

49. A communication device comprising a processor and a memory configured to store a computer program, wherein the processor is configured to call and execute a computer program stored in the memory and to perform a wireless communication method according to any one of claims 1 to 23 or any one of claims 24 to 46.

50. A chip comprising a processor, wherein the processor calls and executes a computer program from memory, and causes a device on which the chip is mounted to execute the wireless communication method described in any one of claims 1 to 23, or the wireless communication method described in any one of claims 24 to 46.

51. A computer-readable storage medium storing a computer program, wherein the computer program causes a computer to execute the wireless communication method described in any one of claims 1 to 23, or the wireless communication method described in any one of claims 24 to 46.

52. A computer program product comprising computer program instructions, wherein the computer program instructions cause a computer to execute a wireless communication method according to any one of claims 1 to 23, or a wireless communication method according to any one of claims 24 to 46.

53. A computer program, wherein, when executed on a computer, the computer program causes the computer to execute the wireless communication method described in any one of claims 1 to 23, or the wireless communication method described in any one of claims 24 to 46.

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