Wireless communication method and apparatus, and communication device

Abstract

The present application provides a wireless communication method and apparatus, and a communication device. The method comprises: a network device sends first information to a terminal device, wherein the first information is used for indicating whether the network device supports the terminal device to receive or send a first transmission on the basis of a first transmission mode before being configured with an exclusive parameter, and the first transmission mode is used for coverage enhancement.

Description

Wireless communication method, device and communication equipment Technical Field

[0001] The present application relates to the field of mobile communication technologies, and in particular to a wireless communication method, apparatus, and communication equipment. Background Art

[0002] In coverage-constrained communication scenarios, such as non-terrestrial networks (NTNs), uplink and downlink transmissions that do not support coverage enhancement technology may not meet coverage requirements. In particular, before terminal-specific parameter configuration, failure to successfully perform uplink and downlink transmissions may prevent the terminal from accessing the network, significantly impacting system performance.

[0003] Summary of the Invention

[0004] Embodiments of the present application provide a wireless communication method, apparatus, and communication equipment.

[0005] The wireless communication method provided in the embodiment of the present application includes:

[0006] The network device sends first information to the terminal device, where the first information is used to indicate whether the network device supports receiving or sending a first transmission based on a first transmission mode before the terminal is configured with exclusive parameters, where the first transmission mode is used for coverage enhancement.

[0007] The wireless communication method provided in the embodiment of the present application includes:

[0008] The terminal device receives first information sent by the network device, where the first information is used to indicate whether the network device supports receiving or sending a first transmission based on a first transmission mode before the terminal is configured with exclusive parameters, where the first transmission mode is used for coverage enhancement.

[0009] The wireless communication device provided in the embodiment of the present application is applied to a network device, including:

[0010] A sending unit is configured as a network device to send first information to a terminal device, wherein the first information is used to indicate whether the network device supports receiving or sending a first transmission based on a first transmission mode before the terminal is configured with exclusive parameters, and the first transmission mode is used for coverage enhancement.

[0011] The wireless communication device provided in the embodiment of the present application is applied to a terminal device, including:

[0012] The receiving unit is configured as a terminal device to receive first information sent by a network device, where the first information is used to indicate whether the network device supports receiving or sending a first transmission based on a first transmission mode before the terminal is configured with exclusive parameters, where the first transmission mode is used for coverage enhancement.

[0013] The communication device provided in an embodiment of the present application may be a terminal device or a network device in the above-mentioned solution, and the communication device includes a processor and a memory. The memory is used to store a computer program, and the processor is used to call and execute the computer program stored in the memory to perform the above-mentioned wireless communication method.

[0014] The chip provided in the embodiment of the present application is used to implement the above-mentioned wireless communication method.

[0015] Specifically, the chip includes: a processor, which is used to call and run a computer program from a memory, so that a device equipped with the chip executes the above-mentioned wireless communication method.

[0016] The computer-readable storage medium provided in an embodiment of the present application is used to store a computer program, which enables a computer to execute the above-mentioned wireless communication method.

[0017] The computer program product provided in the embodiments of the present application includes computer program instructions, which enable a computer to execute the above-mentioned wireless communication method.

[0018] The computer program provided in the embodiment of the present application, when executed on a computer, enables the computer to execute the above-mentioned wireless communication method.

[0019] In an embodiment of the present application, a network device sends a first information to a terminal device. The first information indicates that the network device supports receiving or sending a first transmission based on a first transmission method for coverage enhancement before the terminal device is configured with exclusive parameters, thereby improving the uplink and downlink coverage performance of the terminal device before the exclusive parameters are configured, thereby avoiding the situation where the terminal device cannot access the network. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0021] FIG1 is a schematic diagram of an application scenario of an embodiment of the present application;

[0022] FIG2 is a schematic diagram of the architecture of another communication system provided in an embodiment of the present application;

[0023] FIG3 is a schematic diagram of the architecture of another communication system provided in an embodiment of the present application;

[0024] FIG4 is a schematic diagram of an NTN scenario based on a transparent forwarding satellite provided in an embodiment of the present application;

[0025] FIG5 is a schematic diagram of an NTN scenario based on a regenerative forwarding satellite according to an embodiment of the present application;

[0026] FIG6 is a first wireless communication method provided by an embodiment of the present application;

[0027] FIG7 is a second wireless communication method provided in an embodiment of the present application;

[0028] FIG8 is a third wireless communication method provided in an embodiment of the present application;

[0029] FIG9 is a fourth wireless communication method provided in an embodiment of the present application;

[0030] FIG10 is a fifth wireless communication method provided in an embodiment of the present application;

[0031] FIG11 is a sixth wireless communication method provided in an embodiment of the present application;

[0032] FIG12 is a seventh wireless communication method provided in an embodiment of the present application;

[0033] FIG13 is a PRACH preamble associated with PDSCH repetitive transmission provided by the first information embodiment of the present application;

[0034] FIG14 is a wireless communication method eight provided in an embodiment of the present application;

[0035] FIG15 is a ninth wireless communication method provided in an embodiment of the present application;

[0036] FIG16 is a PRACH preamble associated with TBS scaling of a PDSCH provided by the first information according to an embodiment of the present application;

[0037] FIG17 is a schematic diagram of an optional structure of a wireless communication device according to an embodiment of the present application;

[0038] FIG18 is a schematic diagram of an optional structure of a wireless communication device according to an embodiment of the present application;

[0039] FIG19 is a schematic structural diagram of a communication device provided in an embodiment of the present application;

[0040] FIG20 is a schematic structural diagram of a chip according to an embodiment of the present application;

[0041] Figure 21 is a schematic block diagram of a communication system provided in an embodiment of the present application. DETAILED DESCRIPTION

[0042] The following will describe the technical solutions in the embodiments of this application in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0043] FIG1 is a schematic diagram of an application scenario of an embodiment of the present application.

[0044] As shown in Figure 1, a communication system 100 may include a terminal device 110 and a network device 120. The network device 120 may communicate with the terminal device 110 via an air interface. The terminal device 110 and the network device 120 support multi-service transmission.

[0045] It should be understood that the embodiments of the present application are only illustrative of the communication system 100, but the embodiments of the present application are not limited thereto. That is, the technical solutions of the embodiments of the present application can be applied to various communication systems, such as: Long Term Evolution (LTE) system, LTE Time Division Duplex (TDD), Universal Mobile Telecommunication System (UMTS), Internet of Things (IoT) system, Narrow Band Internet of Things (NB-IoT) system, enhanced Machine-Type Communications (eMTC) system, fifth generation (5G) communication system (also known as New Radio (NR) communication system), or future communication systems.

[0046] In the communication system 100 shown in Figure 1, the network device 120 may be an access network device that communicates with the terminal device 110. The access network device may provide communication coverage for a specific geographical area and may communicate with the terminal device 110 (e.g., user equipment (UE)) located within the coverage area.

[0047] The network device 120 may be an evolved Node B (eNB or eNodeB) in a Long Term Evolution (LTE) system, or a Next Generation Radio Access Network (NG RAN) device, or a base station (gNB) in an NR system, or a wireless controller in a Cloud Radio Access Network (CRAN), or the network device 120 may be a relay station, an access point, an in-vehicle device, a wearable device, a hub, a switch, a bridge, a router, or a network device in a future evolved Public Land Mobile Network (PLMN), etc.

[0048] The terminal device 110 may be 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.

[0049] For example, the terminal device 110 may refer to an access terminal, UE, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent, or user equipment. The access terminal may be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, an IoT device, a satellite handheld terminal, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, an in-vehicle device, a wearable device, a terminal device in a 5G network, or a terminal device in a future evolution network, etc.

[0050] The terminal device 110 can be used for device-to-device (D2D) communication.

[0051] The wireless communication system 100 may further include a core network device 130 for communicating with the base station. The core network device 130 may be a 5G core network (5G Core, 5GC) device, such as an Access and Mobility Management Function (AMF), an Authentication Server Function (AUSF), a User Plane Function (UPF), or a Session Management Function (SMF). Optionally, the core network device 130 may also be an Evolved Packet Core (EPC) device of an LTE network, such as a Session Management Function + Core Packet Gateway (SMF+PGW-C) device. It should be understood that SMF+PGW-C can simultaneously implement the functions that can be implemented by SMF and PGW-C. During the network evolution process, the above-mentioned core network device may also be called other names, or a new network entity may be formed by dividing the functions of the core network, which is not limited in the embodiments of the present application.

[0052] The functional units in the communication system 100 may also establish connections and implement communication via next generation (NG) network interfaces.

[0053] For example, the terminal device establishes an air interface connection with the access network device through the Uu interface for transmitting user plane data and control plane signaling; the terminal device can establish a control plane signaling connection with the AMF through the NG interface 1 (referred to as N1); the access network device, such as the next generation wireless access base station (gNB), can establish a user plane data connection with the UPF through the NG interface 3 (referred to as N3); the access network device can establish a control plane signaling connection with the AMF through the NG interface 2 (referred to as N2); the UPF can establish a control plane signaling connection with the SMF through the NG interface 4 (referred to as N4); the UPF can exchange user plane data with the data network through the NG interface 6 (referred to as N6); the AMF can establish a control plane signaling connection with the SMF through the NG interface 11 (referred to as N11); the SMF can establish a control plane signaling connection with the PCF through the NG interface 7 (referred to as N7).

[0054] Figure 1 exemplarily shows a base station, a core network device and two terminal devices. Optionally, the wireless communication system 100 may include multiple base stations and each base station may include other numbers of terminal devices within its coverage area, which is not limited in the embodiments of the present application.

[0055] 3GPP is researching Non-Terrestrial Network (NTN) technology. NTNs typically use satellite communications to provide communications services to users on the ground. Compared to terrestrial cellular networks, satellite communications offer many unique advantages. First, satellite communications are not restricted by user location. For example, conventional terrestrial communications cannot cover areas such as oceans, high mountains, and deserts where communications equipment cannot be deployed or where there is a sparse population. However, satellite communications, because a single satellite can cover a large area and orbits the Earth, theoretically every corner of the globe can be covered. Second, satellite communications have significant social value. Satellite communications can provide low-cost coverage in remote mountainous areas and poor, underdeveloped countries and regions, enabling people in these areas to enjoy advanced voice communications and mobile internet technologies, narrowing the digital divide with developed regions and promoting their development. Third, satellite communications offer long range, and the cost of communications does not increase significantly with increasing distance. Finally, satellite communications are highly stable and unaffected by natural disasters.

[0056] NTN technology can be combined with various communication systems. For example, NTN technology can be combined with the NR system to form an NR-NTN system. Another example is that NTN technology can be combined with the Internet of Things (IoT) system to form an IoT-NTN system. IoT-NTN systems can include NB-IoT-NTN systems and eMTC-NTN systems.

[0057] FIG2 is a schematic diagram of the architecture of another communication system provided in an embodiment of the present application.

[0058] As shown in Figure 2, a terminal device 1101 and a satellite 1102 are included, 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 can also be referred to as an NTN. In the architecture of the communication system shown in Figure 2, the satellite 1102 can have the function of a base station, and the terminal device 1101 and the satellite 1102 can communicate directly. In the system architecture, the satellite 1102 can be referred to as a network device. In some embodiments of the present application, the communication system may include multiple network devices 1102, and each network device 1102 may include a different number of terminal devices within its coverage area, which is not limited in the embodiments of the present application.

[0059] FIG3 is a schematic diagram of the architecture of another communication system provided in an embodiment of the present application.

[0060] As shown in Figure 3, it includes a terminal device 1201, a satellite 1202, and a base station 1203. Wireless communication can be carried out between the terminal device 1201 and the satellite 1202, and communication can be carried out 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 can also be referred to as an NTN. In the architecture of the communication system shown in Figure 3, the satellite 1202 may not have the function of a base station, and the communication between the terminal device 1201 and the base station 1203 needs to be transferred through the satellite 1202. In this system architecture, the base station 1203 can be referred to as a network device. In some embodiments of the present application, the communication system may include multiple network devices 1203, and each network device 1203 may include a different number of terminal devices within its coverage area, which is not limited in the embodiments of the present application. The network device 1203 may be the network device 120 in Figure 1.

[0061] It should be understood that the satellites 1102 or 1202 include but are not limited to:

[0062] Satellites in Low-Earth Orbit (LEO), Medium-Earth Orbit (MEO), Geostationary Earth Orbit (GEO), and High Elliptical Orbit (HEO) orbits, among others, can use multiple beams to provide ground coverage. For example, a single satellite can form dozens or even hundreds of beams to cover the ground. In other words, a single satellite beam can cover a ground area tens to hundreds of kilometers in diameter, ensuring satellite coverage and increasing the capacity of the entire satellite communications system.

[0063] For example, LEO satellites can have an altitude range of 500 km to 1500 km, with an orbital period of approximately 1.5 to 2 hours. The signal propagation delay for single-hop communication between users is generally less than 20 milliseconds, and the maximum satellite visibility time is 20 minutes. LEO satellites have short signal propagation distances and low link loss, requiring low transmit power from user terminals. GEO satellites can have an orbital altitude of 35,786 km and a period of 24 hours around the Earth. The signal propagation delay for single-hop communication between users is generally 250 milliseconds.

[0064] In order to ensure satellite coverage and improve the system capacity of the entire satellite communication system, satellites use multiple beams to cover the ground. A satellite can form dozens or even hundreds of beams to cover the ground; a satellite beam can cover a ground area with a diameter of tens to hundreds of kilometers.

[0065] It should be noted that Figures 1 to 3 illustrate the systems to which this application applies only by way of example. The methods described in the embodiments of this application are also applicable to other systems. Furthermore, the terms "system" and "network" are often used interchangeably herein. The term "and / or" herein simply describes an association relationship between associated objects, indicating that three possible relationships exist. For example, "A and / or B" can represent: A exists alone, A and B exist simultaneously, or B exists alone. Furthermore, the character " / " generally indicates that the associated objects are in an "or" relationship. It should also be understood that the term "indication" in the embodiments of this application can be direct, indirect, or indicate an associated relationship. For example, "A indicates B" can mean that A directly indicates B, for example, B can obtain information through A; it can also mean that A indirectly indicates B, for example, A indicates C, and B can obtain information through C; or it can mean that A and B have an associated relationship. It should also be understood that the term "corresponding" in the embodiments of this application can mean that two objects have a direct or indirect correspondence relationship, an associated relationship, or a relationship between an indicator and the indicated, a configuration and the configured, and so on. It should also be understood that the “predefined” or “predefined rules” mentioned in the embodiments of the present application can be implemented by pre-saving corresponding codes, tables or other methods that can be used to indicate relevant information in a device (for example, including a terminal device and a network device), and the present application does not limit its specific implementation method. For example, predefined can refer to a definition in a protocol. It should also be understood that in the embodiments of the present application, the “protocol” can refer to a standard protocol in the field of communications, such as an LTE protocol, an NR protocol, and related protocols used in future communication systems, and the present application does not limit this.

[0066] Satellites can be categorized as either transparent payload or regenerative payload based on their functionality. Transparent payload satellites only provide radio frequency filtering, frequency conversion, and amplification, transparently forwarding signals without altering the waveform of the signal being forwarded. Regenerative payload satellites, in addition to providing radio frequency filtering, frequency conversion, and amplification, can also offer demodulation / decoding, routing / conversion, and encoding / modulation, embodying some or all of the functions of a base station.

[0067] In the NTN, one or more gateways may be included for communication between satellites and terminals.

[0068] FIG4 and FIG5 are schematic diagrams showing NTN scenarios based on transparent forwarding satellites and regenerative forwarding satellites, respectively.

[0069] As shown in Figure 4, for an NTN scenario based on transparent forwarding satellites, the gateway and satellite communicate via a feeder link, and the satellite and terminal can communicate via a service link. As shown in Figure 5, for an NTN scenario based on regenerative forwarding satellites, satellites communicate via inter-satellite links, the gateway and satellite communicate via a feeder link, and the satellite and terminal can communicate via a service link.

[0070] To facilitate understanding of the technical solutions of the embodiments of the present application, the relevant technologies of the embodiments of the present application are described below. The following relevant technologies can be arbitrarily combined with the technical solutions of the embodiments of the present application as optional solutions, and they all fall within the protection scope of the embodiments of the present application.

[0071] It should be noted that Figures 1 to 5 illustrate only the systems to which this application applies, and the methods described in the embodiments of this application are also applicable to other systems. Furthermore, the terms "system" and "network" are often used interchangeably herein. The term "and / or" herein simply describes an association relationship between associated objects, indicating that three possible relationships exist. For example, "A and / or B" can represent: A exists alone, A and B exists simultaneously, or B exists alone. Furthermore, the character " / " generally indicates that the associated objects are in an "or" relationship. It should also be understood that the term "indication" in the embodiments of this application can be direct, indirect, or indicate an associated relationship. For example, "A indicates B" can mean that A directly indicates B, for example, B can obtain information through A; it can also mean that A indirectly indicates B, for example, A indicates C, and B can obtain information through C; or it can mean that A and B have an associated relationship. It should also be understood that the term "corresponding" in the embodiments of this application can mean that two objects have a direct or indirect correspondence relationship, an associated relationship, or a relationship between an indicator and the indicated, a configuration and the configured, and so on. It should also be understood that the “predefined” or “predefined rules” mentioned in the embodiments of the present application can be implemented by pre-saving corresponding codes, tables or other methods that can be used to indicate relevant information in a device (for example, including a terminal device and a network device), and the present application does not limit its specific implementation method. For example, predefined can refer to a definition in a protocol. It should also be understood that in the embodiments of the present application, the “protocol” can refer to a standard protocol in the field of communications, such as an LTE protocol, an NR protocol, and related protocols used in future communication systems, and the present application does not limit this.

[0072] To facilitate understanding of the technical solutions of the embodiments of the present application, the relevant technologies of the embodiments of the present application are described below. The following relevant technologies can be arbitrarily combined with the technical solutions of the embodiments of the present application as optional solutions, and they all fall within the protection scope of the embodiments of the present application.

[0073] PDSCH transport block size (TBS) determination:

[0074] For PDSCH scheduled using DCI 1_0, 1_1, or 1_2 with CRC scrambled by C-RNTI, MCS-C-RNTI, TC-RNTI, CS-RNTI, or SI-RNTI, the terminal shall determine the TBS as follows:

[0075] 1) First determine the number of REs in the time slot (First determine the number of REs in the time slot (N RE )

[0076] - First use the formula Determine the number of REs used for PDSCH transmission within a physical resource block (PRB), where is the number of subcarriers within a PRB, is the number of symbols allocated by PDSCH in the time slot, is the number of REs for DMRS on each PRB within the scheduling time, Signaling overhead configured by higher-level parameters

[0077] - Then use the formula Determine the total number of REs used for PDSCH transmission (N RE ), where n PRB is the total number of PRBs allocated to the terminal

[0078] 2) Then use the formula N info =N RE *R*Q m *v obtains the unquantized intermediate variable N info , where R is the target bit rate, Q m is the modulation order, v is the number of transmission layers

[0079] 3) Finally, N info Quantify and determine TBS.

[0080] For PDSCH scheduled by DCI 1_0 with CRC scrambled by P-RNTI, RA-RNTI or MsgB-RNTI, step 2) is modified when determining TBS, and N is scaled. info =N RE *R*Q m *v applies to N info The calculation process of the scaling factor S is determined based on the transport block scaling (TB scaling) field indication in DCI 1_0.

[0081] Table 1 Scaling factors of N_info corresponding to P-RNTI, RA-RNTI and MsgB-RNTI

[0082] TBS scaling effectively reduces information bits without changing the number of time-frequency resources occupied by PDSCH transmission, thereby improving downlink coverage performance by lowering the code rate.

[0083] PDSCH repeated transmission:

[0084] When receiving a PDSCH scheduled with DCI 1_1 or 1_2 using C-RNTI, MCS-C-RNTI, or CS-RNTI scrambled with CRC, if the terminal is configured with pdsch-AggregationFactor = K by higher-layer parameters, the same symbol allocation is applied to K consecutive time slots. The terminal expects the TB to be repeated within the symbol allocation of each time slot in these K consecutive time slots, and the PDSCH is restricted to a single transmission layer.

[0085] The redundancy version (RV) applied to the nth transmission opportunity of the TB is determined according to Table 2, where n=0, 1, ..., K-1.

[0086] Table 2 RV applied when the higher-layer parameter pdsch-AggregationFactor exists

[0087] Based on this, we know that coverage enhancement technology is not applicable to all uplink and downlink transmissions. For example, PDSCH retransmission only applies to PDSCHs after terminal-specific parameter configuration, and TBS scaling only applies to some PDSCHs. In addition, before terminal-specific parameter configuration, only Msg3 PUSCH supports retransmission.

[0088] In coverage-constrained communication scenarios, such as NTN systems, uplink and downlink transmissions that don't support coverage enhancement technology may not meet coverage requirements. In particular, before terminal-specific parameter configuration, failure to successfully perform uplink and downlink transmissions can prevent the terminal from accessing the network, significantly impacting system performance. Therefore, it's necessary to enhance uplink and downlink transmissions before terminal-specific parameter configuration to improve coverage.

[0089] To facilitate understanding of the technical solutions of the embodiments of the present application, the technical solutions of the present application are described in detail below through specific embodiments. The above related technologies can be combined arbitrarily with the technical solutions of the embodiments of the present application as optional solutions, and all of them fall within the scope of protection of the embodiments of the present application. The embodiments of the present application include at least part of the following contents.

[0090] Based on this, an embodiment of the present application provides a wireless communication method as shown in FIG6 , which is applied to a network device, including:

[0091] S601. A network device sends first information to a terminal device, where the first information is used to indicate whether the network device supports receiving or sending a first transmission based on a first transmission mode before the terminal device is configured with dedicated parameters, where the first transmission mode is used for coverage enhancement.

[0092] An embodiment of the present application provides a wireless communication method as shown in FIG7 , which is applied to a terminal device and includes:

[0093] S701. A terminal device receives first information sent by a network device, where the first information is used to indicate whether the network device supports receiving or sending a first transmission based on a first transmission mode before the terminal is configured with exclusive parameters, where the first transmission mode is used for coverage enhancement.

[0094] In an embodiment of the present application, the first information is used to indicate that the network device supports receiving or sending a first transmission based on a first transmission mode for coverage enhancement before the terminal device is configured with exclusive parameters, thereby improving the uplink and downlink coverage performance before the terminal device's exclusive parameters are configured, thereby avoiding the situation where the terminal device cannot access the network.

[0095] In some embodiments, the first transmission mode includes at least one of the following:

[0096] Repeated transmission of the Physical Downlink Shared Channel (PDSCH);

[0097] Scaling of the transport block size (TRB) of PDSCH;

[0098] Repeated transmission of the Physical Uplink Shared Channel (PUSCH).

[0099] It is understandable that before configuring the terminal device-specific parameters, if the first transmission mode includes repeated transmission of PDSCH, the network device supports sending PDSCH based on repeated transmission of PDSCH; if the first transmission mode includes TBS scaling of PDSCH, the network device supports sending PDSCH based on TBS scaling of PDSCH; if the first transmission mode includes repeated transmission of PUSCH, the network device supports receiving PUSCH based on repeated transmission of PUSCH. Of course, the first transmission mode may also include any two or three transmission modes, which will not be repeated here.

[0100] The terminal device-specific parameters include: terminal-specific RRC configuration parameters, and the terminal-specific RRC configuration parameters include at least terminal-specific BWP parameters and the number of repeated transmissions.

[0101] Here, repeated transmission of PDSCH can be understood as repeated transmission of transport blocks TB on PDSCH, TBS scaling of PDSCH can be understood as scaling the TBS carried by PDSCH, and repeated transmission of PUSCH can be understood as repeated transmission of transport blocks TB on PUSCH.

[0102] In some embodiments, the first transmission includes at least one of the following:

[0103] Transmission of random access procedure;

[0104] Transmission after the random access process and before the terminal device is configured with dedicated parameter configuration.

[0105] It is understandable that before configuring the terminal device-specific parameters, the PDSCH transmission (i.e., the first transmission) may refer to the PDSCH transmission of the random access process, for example, the PDSCH scheduled by DCI 1_0 with RA-RNTI scrambled CRC, i.e., message two Msg2 PDSCH (Msg2 is carried by PDSCH), or for example, the PDSCH scheduled by DCI 1_0 with TC-RNTI scrambled CRC, i.e., message four Msg4PDSCH (Msg4 is carried by PDSCH).

[0106] It is understandable that before configuring the terminal device-specific parameters, PDSCH transmission (i.e., the first transmission) can also refer to the PDSCH transmission after the random access process and before the terminal device is configured with the specific parameters, for example, the PDSCH carrying the terminal device-specific parameter configuration message.

[0107] It is understandable that before configuring the terminal device-specific parameters, the PUSCH transmission (i.e., the first transmission) may refer to the PUSCH transmission after the random access process and before the terminal device is configured with the specific parameters, for example, the PUSCH carrying the radio resource control (RRC) connection establishment completion message.

[0108] In some embodiments, the first information includes a first parameter, and the first parameter is used to indicate whether the network device supports receiving or sending the first transmission based on the first transmission mode before the terminal is configured with dedicated parameters.

[0109] In one possible implementation, when the first information includes the first parameter, it indicates that the network device supports receiving or sending the first transmission based on the first transmission mode before the terminal is configured with exclusive parameters; when the first information does not include the first parameter, it indicates that the network device does not support receiving or sending the first transmission based on the first transmission mode before the terminal is configured with exclusive parameters.

[0110] In another possible implementation, different values ​​are assigned to the first parameter included in the first information to indicate whether the network device supports or does not support the terminal receiving or sending the first transmission based on the first transmission mode before being configured with the dedicated parameters.

[0111] In some embodiments, when the first information includes the first parameter and is configured as "enabled", it indicates that the network device supports the terminal to receive or send the first transmission based on the first transmission mode before being configured with the dedicated parameters.

[0112] In some embodiments, the first information includes a second parameter, which is a parameter of the first transmission mode.

[0113] In some embodiments, when the network device supports receiving or sending the first transmission based on the first transmission mode before the terminal is configured with dedicated parameters, the first information also includes a second parameter, so that the terminal device will execute the first transmission mode based on the second parameter.

[0114] In some embodiments, the first information is carried by one of the following:

[0115] System messages;

[0116] Random Access Response (RAR) message.

[0117] That is, the first information is carried through a system message, such as SIB1; the first information may also be carried through a RAR message.

[0118] In a wireless communication method provided in an embodiment of the present application, the network device is further configured to perform the following processing:

[0119] The network device receives second information sent by the terminal device, where the second information is used for at least one of the following:

[0120] Requesting to receive or send a first transmission based on a first transmission mode;

[0121] indicating a capability of receiving or sending a first transmission based on a first transmission mode;

[0122] Request a transmission factor, which includes the number of retransmissions and / or a scaling factor.

[0123] In one example, the wireless communication method provided in an embodiment of the present application is shown in FIG8 , including:

[0124] S601. A network device sends first information to a terminal device, where the first information is used to indicate whether the network device supports receiving or sending a first transmission based on a first transmission mode before the terminal device is configured with dedicated parameters, where the first transmission mode is used for coverage enhancement.

[0125] S602: The network device receives second information sent by the terminal device, where the second information is used for at least one of the following:

[0126] Requesting to receive or send a first transmission based on a first transmission mode;

[0127] indicating a capability of receiving or sending a first transmission based on a first transmission mode;

[0128] Request a transmission factor, which includes the number of retransmissions and / or a scaling factor.

[0129] That is, after the network device sends the first information to the terminal device, the network device receives the second information sent by the terminal device.

[0130] In a wireless communication method provided in an embodiment of the present application, the terminal device is further configured to perform the following processing:

[0131] The terminal device sends second information to the network device, where the second information is used for at least one of the following:

[0132] Requesting to receive or send a first transmission based on a first transmission mode;

[0133] indicating a capability of receiving or sending a first transmission based on a first transmission mode;

[0134] Request a transmission factor, which includes the number of retransmissions and / or a scaling factor.

[0135] In one example, the wireless communication method provided in an embodiment of the present application is shown in FIG9 , including:

[0136] S701. A terminal device receives first information sent by a network device, where the first information is used to indicate whether the network device supports receiving or sending a first transmission based on a first transmission mode before the terminal device is configured with exclusive parameters, where the first transmission mode is used for coverage enhancement.

[0137] S702: The terminal device sends second information to the network device. The second information is used for at least one of the following:

[0138] Requesting to receive or send a first transmission based on a first transmission mode;

[0139] indicating a capability of receiving or sending a first transmission based on a first transmission mode;

[0140] Request a transmission factor, which includes the number of retransmissions and / or a scaling factor.

[0141] That is, after the terminal device receives the first information sent by the network device, the terminal device sends the second information to the network device.

[0142] In some embodiments, if the first transmission mode includes repeated transmission of the PDSCH, the second information is used for at least one of the following: requesting reception of the PDSCH based on repeated transmission of the PDSCH; indicating a capability of receiving the PDSCH based on repeated transmission of the PDSCH; requesting a number of repeated transmissions of the PDSCH;

[0143] If the first transmission mode includes TBS scaling of the PDSCH, the second information is used for at least one of: requesting reception of the PDSCH based on TBS scaling of the PDSCH; indicating a capability of receiving the PDSCH based on TBS scaling of the PDSCH; requesting a PDSCH TBS scaling factor;

[0144] If the first transmission mode includes repeated transmission of PUSCH, the second information is used for at least one of the following: requesting to send PUSCH based on repeated transmission of PUSCH; indicating the capability of sending PUSCH based on repeated transmission of PUSCH; requesting the number of repeated transmissions of PUSCH.

[0145] In some embodiments, the second information is carried by one of the following:

[0146] Message 1 Msg1;

[0147] Message three Msg3.

[0148] That is, the second information can be carried by Msg1, for example, choosing to initiate a random access process on the random access resource associated with the first transmission mode; optionally, the random access resource associated with the first transmission mode is further associated with a transmission factor, such as different random access resources are associated with different transmission factors such as X1 or X2 or X3, then the terminal device chooses to initiate a random access process on a certain random access resource to request the corresponding transmission factor from the network device.

[0149] The second information can also be carried by Msg3.

[0150] In some embodiments, the second information is included in the Msg3 as one of the following: a Media Access Control (MAC) Control Element (CE);

[0151] Radio Resource Control (RRC) signaling;

[0152] Logical Channel Identification (LCID) corresponding to the Common Control Channel (CCCH);

[0153] Reserved bits in the MAC subheader.

[0154] In one implementation, the second information may be carried by a MAC CE.

[0155] For example, 1 bit in the payload of the first MAC CE is used to carry the second information. When the bit is set to 1, it indicates a request to receive or send the first transmission based on the first transmission mode, and / or indicates the ability to receive or send the first transmission based on the first transmission mode; when the bit is set to 0, it indicates no request to receive or send the first transmission based on the first transmission mode, and / or no indication of the ability to receive or send the first transmission based on the first transmission mode; optionally, 2 bits in the payload of the first MAC CE are used to request a transmission factor. For example, the bit domain values ​​​​of "00", "01", "10" and "11" respectively represent transmission factors such as X1, X2, X3 and no request for transmission factors.

[0156] For another example, the second information is carried by the second MAC CE, the second MAC CE corresponds to an LCID and the payload size is 0. If the terminal device transmits the second MAC CE in Msg3, it indicates a request to receive or send the first transmission based on the first transmission mode, and / or indicates the ability to receive or send the first transmission based on the first transmission mode; if the terminal device does not transmit the second MAC CE in Msg3, it indicates no request to receive or send the first transmission based on the first transmission mode, and / or does not indicate the ability to receive or send the first transmission based on the first transmission mode; optionally, a third MAC CE with a different LCID is introduced to associate different transmission factors, such as X1, X2 or X3, and the terminal device requests the corresponding transmission factor from the network device by transmitting the third MAC CE associated with the transmission factor in Msg3.

[0157] For another example, the second information is carried by the second MAC CE and the fourth MAC CE, and the second MAC CE and the fourth MAC CE respectively correspond to an LCID and the payload size is 0. If the terminal device transmits the second MAC CE in Msg3, it indicates a request to receive or send the first transmission based on the first transmission mode, and / or indicates the ability to receive or send the first transmission based on the first transmission mode; if the terminal device transmits the fourth MAC CE in Msg3, it indicates no request to receive or send the first transmission based on the first transmission mode, and / or does not indicate the ability to receive or send the first transmission based on the first transmission mode; optionally, a third MAC CE with a different LCID is introduced to associate different transmission factors, such as X1, X2 or X3, and the terminal device requests the corresponding transmission factor from the network device by transmitting the third MAC CE associated with the transmission factor in Msg3.

[0158] In another implementation, the second information may be carried via radio resource control (RRC) signaling. For example, a first reserved bit field in the RRC signaling corresponding to the existing Msg3 may be used to request receiving or sending the first transmission based on the first transmission mode, and / or to indicate the ability to receive or send the first transmission based on the first transmission mode; optionally, a transmission factor may be carried via a second reserved bit field in the RRC signaling, for example, the second reserved bit field values ​​of "00," "01," "10," and "11" respectively represent transmission factors such as X1, X2, X3, and no transmission factor is requested.

[0159] In another implementation, the second information can be carried by the LCID corresponding to the common control channel CCCH. Generally, the channel length of CCCH includes 48 bits and 64 bits. Therefore, CCCH can specifically include the first common control channel CCCH1 (the channel length can be 48 bits) and / or the second common control channel CCCH2 (the channel length can be 64 bits). The LCID corresponding to CCCH1 and CCCH2 here is an unoccupied LCID. The subsequent terminal device can determine the corresponding CCCH according to the first transmission mode and the required channel length. When the first condition is met, the CCCH service data unit (SDU) transmitted by the terminal device 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 an occupied LCID). CCCH SDU is distinguished by different LCIDs, and the LCID is contained in the MAC subheader located before the CCCH SDU. The first condition includes: requesting to receive or send the first transmission based on the first transmission mode, and / or indicating the ability to receive or send the first transmission based on the first transmission mode. Optionally, a first common control channel CCCH1 or a second common control channel CCCH2 with different LCIDs is introduced to associate different transmission factors, such as X1, X2 or X3. The terminal device requests the corresponding transmission factor from the network device by transmitting the SDU corresponding to CCCH1 or CCCH2 associated with the transmission factor in Msg3.

[0160] In another implementation, the second information can be carried through the first reserved bit field in the MAC subheader. For example, when the first reserved bit field is set to 1, it indicates a request to receive or send the first transmission based on the first transmission mode, and / or indicates the ability to receive or send the first transmission based on the first transmission mode; optionally, the transmission factor can be carried through the second reserved bit field in the MAC subheader. For example, the second reserved bit field values ​​of "00", "01", "10" and "11" respectively represent transmission factors such as X1, X2, X3 and no transmission factor requested.

[0161] In a wireless communication method provided in an embodiment of the present application, the network device is further configured to perform the following processing:

[0162] The network device sends third information to the terminal device, where the third information is used to determine a target transmission factor, where the target transmission factor is a transmission factor applied by the first transmission mode.

[0163] In one example, the wireless communication method provided in an embodiment of the present application is shown in FIG10 , including:

[0164] S601. A network device sends first information to a terminal device, where the first information is used to indicate whether the network device supports receiving or sending a first transmission based on a first transmission mode before the terminal device is configured with dedicated parameters, where the first transmission mode is used for coverage enhancement.

[0165] S603: The network device sends third information to the terminal device, where the third information is used to determine a target transmission factor, where the target transmission factor is a transmission factor applied by the first transmission mode.

[0166] That is, after the network device sends the first information to the terminal device, the network device also sends the third information to the terminal device.

[0167] In a wireless communication method provided in an embodiment of the present application, the terminal device is further configured to perform the following processing:

[0168] The terminal device receives third information sent by the network device, where the third information is used to determine a target transmission factor, where the target transmission factor is a transmission factor applied by the first transmission mode.

[0169] In one example, the wireless communication method provided in an embodiment of the present application is shown in FIG11 , including:

[0170] S701. A terminal device receives first information sent by a network device, where the first information is used to indicate whether the network device supports receiving or sending a first transmission based on a first transmission mode before the terminal is configured with exclusive parameters, where the first transmission mode is used for coverage enhancement.

[0171] S703. The terminal device receives third information sent by the network device, where the third information is used to determine a target transmission factor, where the target transmission factor is a transmission factor applied by the first transmission mode.

[0172] That is, after the terminal device receives the first information sent by the network device, the terminal device also receives the third information sent by the network device.

[0173] In some embodiments, if the first transmission mode includes repeated transmission of the PDSCH, the transmission factor includes the number of repeated transmissions of the PDSCH;

[0174] If the first transmission mode includes TBS scaling of the PDSCH, the transmission factor includes a PDSCH TBS scaling factor;

[0175] If the first transmission mode includes repeated transmission of the PUSCH, the transmission factor includes the number of repeated transmissions of the PUSCH.

[0176] In some embodiments, the target transfer factor is one of the following:

[0177] a first transmission factor, wherein the first transmission factor is a transmission factor within a first transmission factor set;

[0178] a second transfer factor, wherein the second transfer factor is a default transfer factor;

[0179] A third transmission factor, where the third transmission factor is the transmission factor carried by the first information.

[0180] In some embodiments, the first set of transfer factors is one of the following:

[0181] a set of transmission factors carried by the first information;

[0182] The default transfer factor set.

[0183] That is, the first transmission factor set is carried by the first information or is a default transmission factor set.

[0184] In a possible implementation, the first information carries a first transmission factor set, or a default transmission factor set is set. Based on this,

[0185] In some embodiments, if the third information is used to indicate the first transmission factor, the target transmission factor is the first transmission factor.

[0186] That is, when the third information sent by the network device to the terminal device includes the transmission factors in the first transmission factor set, the transmission factors in the first transmission factor set are used as the transmission factors applied in the first transmission mode.

[0187] In some embodiments, the third information is used to indicate a value outside the first transmission factor set, then the target transmission factor is the second transmission factor, or the first transmission does not apply the first transmission mode.

[0188] That is, when the third information sent by the network device to the terminal device includes a value outside the first transmission factor set, the first transmission mode applies the default transmission factor, or the first transmission does not apply the first transmission mode.

[0189] In some embodiments, the terminal device does not expect the third information to indicate a value outside the first set of transmission factors.

[0190] In another possible implementation, the first information carries a third transmission factor, or a default second transmission factor is set. Based on this,

[0191] In some embodiments, the third information is used to indicate whether the first transmission mode applies the second transmission factor or the third transmission factor.

[0192] That is, the third information sent by the network device to the terminal device indicates whether the first transmission mode applies the third transmission factor carried by the first information, or indicates whether the first transmission mode applies the default second transmission factor.

[0193] In some embodiments, if the third information is used to indicate that the first transmission mode applies the second transmission factor or the third transmission factor, the target transmission factor is the second transmission factor or the third transmission factor.

[0194] That is to say, if the third information sent by the network device to the terminal device indicates that the first transmission mode applies the third transmission factor carried by the first information, then the first transmission mode applies the third transmission factor; if the third information sent by the network device to the terminal device indicates that the first transmission mode applies the default second transmission factor, then the first transmission mode applies the second transmission factor.

[0195] In some embodiments, if the third information is used to indicate that the first transmission mode does not apply the second transmission factor or the third transmission factor, the first transmission mode does not apply.

[0196] That is to say, if the third information sent by the network device to the terminal device indicates that the first transmission mode does not apply the third transmission factor carried by the first information, then the first transmission does not apply the first transmission mode; if the third information sent by the network device to the terminal device indicates that the first transmission mode does not apply the default second transmission factor, then the first transmission does not apply the first transmission mode.

[0197] In some embodiments, the third information is carried by one of the following:

[0198] Downlink Control Information (DCI);

[0199] RAR message.

[0200] That is, the third information may be carried by DCI, such as DCI 1_0 for scheduling PDSCH and DCI 0_0 for scheduling PUSCH; the third information may also be carried by a RAR message.

[0201] Based on the above embodiment, when the wireless communication method provided in the embodiment of the present application is applied to a network device, after the network device sends the first information to the terminal device, the network device receives the second information sent by the terminal device, and then the network device sends the third information to the terminal device. That is, the network device sequentially executes S601, S602, and S603.

[0202] Based on the above embodiment, when the wireless communication method provided in the embodiment of the present application is applied to a terminal device, after the terminal device receives the first information sent by the network device, the terminal device sends the second information to the network device, and then the terminal device receives the third information sent by the network device. That is, the terminal device sequentially executes S701, S702, and S703.

[0203] Based on this, in some embodiments, the target transfer factor is one of the following:

[0204] a first transmission factor, wherein the first transmission factor is a transmission factor within a first transmission factor set;

[0205] a second transfer factor, wherein the second transfer factor is a default transfer factor;

[0206] A third transmission factor, where the third transmission factor is a transmission factor carried by the first information or the second information.

[0207] Here, the third transmission factor is explained, where the third transmission factor is the transmission factor carried by the second information.

[0208] That is, it is intended to explain that the transmission factor (ie, target transmission factor) applied in the first transmission mode is the transmission factor requested by the terminal device. If the first transmission mode includes repeated transmission of PDSCH, the second information sent by the terminal device received by the S702 network device includes a number of PDSCH repeated transmissions K, for example, K=2, and the third information sent by the network device to the terminal device includes a number of PDSCH repeated transmissions 2 (that is, the target transmission factor), or indicates the number of PDSCH repeated transmissions K requested by the terminal device; if the first transmission mode includes repeated transmission of PUSCH, the second information sent by the terminal device received by the S702 network device includes a number of PUSCH repeated transmissions K, for example, K=2, and the third information sent by the network device to the terminal device includes a number of PUSCH repeated transmissions 2 (that is, the target transmission factor), or indicates the number of PUSCH repeated transmissions K requested by the terminal device; if the first transmission mode includes TBS scaling of PDSCH, the second information sent by the terminal device received by the S702 network device includes a number of PDSCH repeated transmissions S, for example, S=0.5, and the third information sent by the network device to the terminal device includes PDSCH The TBS scaling factor is 0.5 (ie, the target transmission factor), or indicates the PDSCH TBS scaling factor S requested by the application terminal device.

[0209] The following describes the wireless communication method provided in the embodiments of the present application.

[0210] In the embodiment of the present application, the first transmission mode includes at least one of the following: repeated transmission of PDSCH, TBS scaling of PDSCH, and repeated transmission of PUSCH.

[0211] Based on the difference in the first transmission mode, the wireless communication provided by the embodiments of the present application includes but is not limited to the following embodiment 1, embodiment 2 and embodiment 3.

[0212] Example 1: The first transmission mode before the terminal device-specific parameter configuration includes repeated transmission of PDSCH

[0213] The embodiment of the present application supports repeated transmission of at least one PDSCH before the terminal device's exclusive parameter configuration, thereby improving downlink coverage performance.

[0214] The PDSCH repetitive transmission process before the terminal device-specific parameter configuration according to an embodiment of the present application is shown in FIG12 , and is applied to a wireless communication system including a terminal device and a network device, including:

[0215] S1201. The network device sends first information to the terminal device, where the first information is used for at least one of the following: indicating that the network device supports the sending of PDSCH based on repeated transmission of PDSCH before the terminal device is configured with dedicated parameters, and parameters for repeated transmission of PDSCH.

[0216] S1202: The terminal device sends second information to the network device. The second information is used for at least one of the following:

[0217] Requesting repeated transmission of PDSCH based on PDSCH reception;

[0218] Indicates the ability to receive PDSCH based on repeated transmission of PDSCH;

[0219] Requested number of PDSCH retransmissions.

[0220] S1203. The network device sends third information to the terminal device, where the third information is used to determine the target number of PDSCH repetition transmissions.

[0221] In an embodiment of the present application, the network device sends a first information to the terminal device. The first information indicates that the network device supports the repeated transmission of PDSCH for coverage enhancement before the terminal device is configured with exclusive parameters, thereby improving the downlink coverage performance of the terminal device before the exclusive parameters are configured, thereby avoiding the situation where the terminal device cannot access the network.

[0222] First, the network device sends first information to the terminal device, which is used to indicate that the network device supports sending PDSCH based on repeated transmission of PDSCH before the terminal device is configured with dedicated parameters.

[0223] For example, the first information includes the first parameter, or the first information includes the first parameter and is configured as "enabled", which means that the network device supports sending PDSCH based on repeated transmission of PDSCH before the terminal device-specific parameter configuration.

[0224] In some embodiments, the first information further includes a second parameter, which is a parameter for repeated transmission of the PDSCH.

[0225] In some embodiments, the second parameter 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 repeated transmissions of the PDSCH, and a set of repeated transmissions of the PDSCH.

[0226] The random access resources of the embodiments of the present application are used by the terminal device to perform a random access procedure. The random access resources associated with the repeated transmission of the PDSCH can be a specified physical random access channel (PRACH) format, a specified PRACH preamble, or a specified RO (PRACH opportunity), as well as any other configurable random access resources.

[0227] Taking the PRACH preamble as an example of a random access resource associated with the repeated transmission of PDSCH, based on the contention-based PRACH preamble and the contention-free PRACH preamble provided at the random access opportunity, the first information provides the PRACH preamble associated with the repeated transmission of PDSCH, and the terminal device can select the PRACH preamble associated with the repeated transmission of PDSCH to initiate the random access process.

[0228] The first information of the embodiment of the present application provides a PRACH preamble associated with PDSCH repeated transmission as shown in Figure 13. The number of preambles provided at the random access opportunity is fixed. On the basis of the contention-based PRACH preamble and the contention-free PRACH preamble provided at the random access opportunity, a part of the preamble (i.e., the PRACH preamble associated with PDSCH repeated transmission) is separated for the repeated transmission of PDSCH.

[0229] The RSRP threshold value of the reference signal received power corresponding to the repeated transmission of the PDSCH in the embodiment of the present application, the terminal device decides whether to request to receive the PDSCH based on the repeated transmission of the PDSCH based on the RSRP threshold value, and / or indicates the ability to receive the PDSCH based on the repeated transmission of the PDSCH, and / or requests the number of repeated transmissions of the PDSCH.

[0230] For example, when the RSRP threshold value of the reference signal received power corresponding to the repeated transmission of PDSCH is -126dBm, if the RSRP measured by the terminal device is lower than the RSRP threshold value (-126dBm), the terminal device can select the PRACH preamble associated with the repeated transmission of PDSCH to initiate a random access process, that is, the terminal device requests the network device to receive PDSCH based on the repeated transmission of PDSCH, and / or indicates the ability to receive PDSCH based on the repeated transmission of PDSCH, and / or requests the number of repeated transmissions of PDSCH.

[0231] The number of PDSCH repetitions in the embodiment of the present application may be carried in the first information, or may be agreed upon by the network device and the terminal device (i.e., the default number). Regarding the number of PDSCH repetitions, it is only valid for terminals that request to receive PDSCH based on PDSCH repetitions, and / or indicate the ability to receive PDSCH based on PDSCH repetitions, and / or request the number of PDSCH repetitions. For example, the first information provides the number of PDSCH repetitions K = 2 or 4 or 8, and the terminal device requests to receive PDSCH based on PDSCH repetitions, and / or indicates the ability to receive PDSCH based on PDSCH repetitions, and / or requests the number of PDSCH repetitions. After that, the terminal device repeatedly receives PDSCH K times based on the PDSCH repetition mode.

[0232] The set of PDSCH repetition times of the embodiment of the present application can be carried in the first information, or it can be agreed upon by the network device and the terminal device (i.e., the default). Regarding the set of PDSCH repetition times, it is only valid for terminals that request to receive PDSCH based on PDSCH repetition transmission, and / or indicate the ability to receive PDSCH based on PDSCH repetition transmission, and / or request the number of PDSCH repetition transmissions. For example, the first information provides a set of PDSCH repetition times K = {1, 2, 4, 8}, and the terminal device requests to receive PDSCH based on PDSCH repetition transmission, and / or indicates the ability to receive PDSCH based on PDSCH repetition transmission, and / or requests the number of PDSCH repetition transmissions. After that, the terminal device repeatedly receives PDSCH K1 times based on the PDSCH repetition transmission mode. K1 is a value in the set K.

[0233] The first information may be carried by a system message, such as SIB1; the first information may also be carried by a RAR message.

[0234] Subsequently, the terminal device sends second information to the network device for at least one of the following: requesting to receive PDSCH based on repeated transmission of PDSCH; indicating the capability of receiving PDSCH based on repeated transmission of PDSCH; requesting the number of repeated transmissions of PDSCH.

[0235] The second information can be carried by Msg1, for example, choosing to initiate a random access process on a random access resource associated with PDSCH repeated transmission; optionally, the random access resource associated with PDSCH repeated transmission is further associated with the number of PDSCH repeated transmissions, such as different random access resources are associated with different numbers of PDSCH repeated transmissions such as 2 or 4 or 8, then the terminal device chooses to initiate a random access process on a certain random access resource to request the corresponding number of PDSCH repeated transmissions from the network device.

[0236] The second information can also be carried in Msg3. The specific solutions are as follows:

[0237] In one implementation, the second information may be carried by a MAC CE.

[0238] For example, 1 bit in the payload of the first MAC CE is used to carry the second information. When the bit is set to 1, it indicates a request for repeated transmission and reception of PDSCH based on PDSCH and / or an indication of the capability of repeated transmission and reception of PDSCH based on PDSCH; when the bit is set to 0, it indicates no request for repeated transmission and reception of PDSCH based on PDSCH, and / or no indication of the capability of repeated transmission and reception of PDSCH based on PDSCH; optionally, 2 bits in the payload of the first MAC CE are used to request the number of repeated transmissions of PDSCH, for example, the bit domain values ​​of "00", "01", "10" and "11" respectively indicate the number of repeated transmissions of PDSCH as 2, 4, 8 and no request for repeated transmission of PDSCH.

[0239] For another example, the second information is carried by the second MAC CE, and the second MAC CE corresponds to an LCID and has a payload size of 0. If the terminal device transmits the second MAC CE in Msg3, it indicates a request for repeated transmission and reception of PDSCH based on PDSCH, and / or indicates the ability to repeatedly transmit and receive PDSCH based on PDSCH; if the terminal device does not transmit the second MAC CE in Msg3, it indicates that repeated transmission and reception of PDSCH based on PDSCH is not requested, and / or the ability to repeatedly transmit and receive PDSCH based on PDSCH is not indicated; optionally, a third MAC CE with a different LCID is introduced to associate different PDSCH repeated transmission times, such as 2, 4 or 8, and the terminal device requests the corresponding PDSCH repeated transmission times from the network device by transmitting the third MAC CE associated with the PDSCH repeated transmission times in Msg3.

[0240] For another example, the second information is carried by the second MAC CE and the fourth MAC CE, and the second MAC CE and the fourth MAC CE respectively correspond to an LCID and the payload size is 0. If the terminal device transmits the second MAC CE in Msg3, it indicates a request for repeated transmission and reception of PDSCH based on PDSCH, and / or indicates the ability of repeated transmission and reception of PDSCH based on PDSCH; if the terminal device transmits the fourth MAC CE in Msg3, it indicates no request for repeated transmission and reception of PDSCH based on PDSCH, and / or does not indicate the ability of repeated transmission and reception of PDSCH based on PDSCH; optionally, a third MAC CE with a different LCID is introduced to associate different PDSCH repeated transmission times, such as 2 or 4 or 8, and the terminal device requests the corresponding PDSCH repeated transmission times from the network device by transmitting the third MAC CE associated with the PDSCH repeated transmission times in Msg3.

[0241] In another implementation, the second information may be carried through radio resource control (RRC) signaling. For example, the first reserved bit field in the RRC signaling corresponding to the existing Msg3 may be used to request repeated transmission and reception of the PDSCH based on the PDSCH, and / or to indicate the ability to receive the PDSCH based on repeated transmission of the PDSCH; optionally, the number of repeated transmissions of the PDSCH may be carried through the second reserved bit field in the RRC signaling, for example, the second reserved bit field values ​​of "00", "01", "10", and "11" respectively indicate the number of repeated transmissions of the PDSCH as 2, 4, 8, and no request for repeated transmission of the PDSCH.

[0242] In another implementation, the second information can be carried by the LCID corresponding to the common control channel CCCH. Generally, the channel length of CCCH includes 48 bits and 64 bits. Therefore, CCCH can specifically include the first common control channel CCCH1 (the channel length can be 48 bits) and / or the second common control channel CCCH2 (the channel length can be 64 bits). The LCID corresponding to CCCH1 and CCCH2 here is an unoccupied LCID. The subsequent terminal device can determine the corresponding CCCH according to the first transmission mode and the required channel length. When the first condition is met, the CCCH SDU transmitted by the terminal device 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 an occupied LCID). CCCH SDU is distinguished by different LCIDs, and the LCID is contained in the MAC subheader located before the CCCH SDU. The first condition includes: requesting repeated transmission and reception of PDSCH based on PDSCH, and / or indicating the ability to repeatedly transmit and receive PDSCH based on PDSCH. Optionally, a first common control channel CCCH1 or a second common control channel CCCH2 with different LCIDs is introduced to associate different PDSCH repetition transmission times, such as 2 / 4 / 8. The terminal device requests the corresponding PDSCH repetition transmission times from the network device by transmitting the SDU corresponding to CCCH1 or CCCH2 associated with the PDSCH repetition transmission times in Msg3.

[0243] In another implementation, the second information can be carried through the first reserved bit field in the MAC subheader. For example, when the first reserved bit field is set to 1, it indicates a request for repeated transmission and reception of PDSCH based on PDSCH, and / or indicates the ability to receive PDSCH based on repeated transmission of PDSCH; optionally, the number of repeated transmissions of PDSCH can be carried through the second reserved bit field in the MAC subheader. For example, the values ​​of the second reserved bit field are "00", "01", "10" and "11", respectively indicating the number of repeated transmissions of PDSCH as 2, 4, 8 and no request for repeated transmission of PDSCH.

[0244] Finally, if the terminal device applies the PDSCH repetition number set, the network device sends third information to the terminal device to determine the PDSCH repetition number ultimately applied for the PDSCH repetition transmission. For example, after the terminal device requests the ability to receive PDSCH based on PDSCH repetition transmission and / or indicates the ability to receive PDSCH based on PDSCH repetition transmission, the network device further determines the third information based on the PDSCH repetition number set in the first information or the protocol default, such as K = {1, 2, 4, 8}.

[0245] If the number of elements contained in the default PDSCH repetition transmission number set K provided by the first information is variable, for example, the PDSCH repetition transmission number set K may be: K = {1, 2} contains 2 PDSCH repetition transmission number candidate values; K = {1, 2, 4} contains 3 PDSCH repetition transmission number candidate values; or K = {1, 2, 4, 8} contains 4 PDSCH repetition transmission number candidate values, then the bit width P of the bit field required by the third information is also different, for example, K = {1, 2} / {1, 2, 4} / {1, 2, 4, 8} requires 1 / 2 / 2 bits respectively.

[0246] In order to ensure that the terminal device and the network device have the same understanding of the bit field of the third information, Determine the bit width P of the bit field of the third information, where Indicates rounding up, where I is the number of candidate values ​​in the PDSCH repetition transmission count set K or the maximum number of configurable candidate values. For example, if I is the number of candidate values ​​in the PDSCH repetition transmission count set K, then K = {1, 2} / {1, 2, 4} / {1, 2, 4, 8} requires a bit width of P = 1 / 2 / 2; if I is the maximum number of configurable candidate values ​​in the PDSCH repetition transmission count set K, that is, 4, then K = {1, 2} / {1, 2, 4} / {1, 2, 4, 8} requires a bit width of P = 2.

[0247] For example, the PDSCH repetition transmission times set K={1, 2, 4}, and the mapping relationship between the third information bit field and the PDSCH repetition transmission times is shown in Table 3.

[0248] Table 3 Mapping relationship between the third information bit field and the number of PDSCH repetition transmissions

[0249] It should be noted that, considering the value that the third information bit field can indicate 2 P It may be greater than the number of candidate values ​​in the PDSCH repetition transmission count set K. In order to ensure that the terminal device and the network device always have the same understanding of the PDSCH repetition transmission count indicated by the bit field, it is necessary to stipulate that the terminal device does not expect to be instructed with a value outside the PDSCH repetition transmission count set K, or when the terminal device is instructed with a value outside the PDSCH repetition transmission count set K, the PDSCH repetition transmission applies the default PDSCH repetition transmission count or receives a single PDSCH transmission.

[0250] For example, the network device uses 2 bits to indicate the number of PDSCH repetition transmissions and provides a PDSCH repetition transmission number set K = {1, 2, 4}. In this case, the value that the bit field can indicate is 2 2=4 is greater than the number of candidate values ​​in K, 3, so it is necessary to stipulate that: if the terminal device requests the network device to receive PDSCH based on repeated transmission of PDSCH and / or indicates the ability to receive PDSCH based on repeated transmission of PDSCH, the terminal device does not expect to be indicated with a value other than K={1, 2, 4}, such as the bit field "11"; or when the bit field indicates "11", the repeated transmission of PDSCH applies the default number of PDSCH repeated transmissions, such as 2, or receives a single PDSCH transmission.

[0251] In addition, optionally, if the terminal device applies a number of PDSCH repetition transmissions, the network device sends a third information to the terminal device, so that the terminal device determines the number of PDSCH repetition transmissions ultimately applied for the repetition transmission of the PDSCH based on the third information. For example, after the terminal device requests the ability to receive PDSCH based on PDSCH repetition transmission and / or indicates the ability to receive PDSCH based on PDSCH repetition transmission, the network device needs to further receive the third information to determine whether to ultimately apply the number of PDSCH repetition transmissions based on the first information or the second information or the default number of PDSCH repetition transmissions in the protocol, such as K=2 / 4 / 8. For example, the third information indicates "1" for applying K and "0" for not applying K.

[0252] The third information may be carried by DCI, such as DCI 1_0 for scheduling PDSCH; the third information may also be carried by RAR.

[0253] Example 2: The first transmission mode before the terminal device transmission parameter configuration includes repeated transmission of PUSCH

[0254] The embodiment of the present application supports repeated transmission of at least one PUSCH before the terminal device's exclusive parameter configuration, thereby improving uplink coverage performance.

[0255] The PUSCH repetitive transmission process before the terminal device-specific parameter configuration according to an embodiment of the present application is shown in FIG14 , and is applied to a wireless communication system including a terminal device and a network device, including:

[0256] S1401. The network device sends first information to the terminal device, where the first information is used for at least one of the following: indicating that the network device supports the terminal device to receive PUSCH based on repeated transmission of PUSCH before being configured with dedicated parameters, and parameters for repeated transmission of PUSCH.

[0257] S1402: The terminal device sends second information to the network device. The second information is used for at least one of the following:

[0258] Requesting repeated transmission of PUSCH based on PUSCH;

[0259] Indicates the ability to send PUSCH based on repeated transmission of PUSCH;

[0260] Requested number of PUSCH retransmissions.

[0261] S1403. The network device sends third information to the terminal device, where the third information is used to determine the target number of PUSCH repetition transmissions.

[0262] In an embodiment of the present application, a network device sends a first information to a terminal device. The first information indicates that the network device supports the repeated transmission and reception of PUSCH based on the PUSCH for coverage enhancement before the terminal device is configured with exclusive parameters, thereby improving the uplink coverage performance of the terminal device before the exclusive parameters are configured, thereby avoiding the situation where the terminal device cannot access the network.

[0263] First, the network device sends first information to the terminal device, which is used to instruct the network device to support repeated transmission and reception of PUSCH based on PUSCH before the terminal device is configured with dedicated parameters.

[0264] For example, the first information includes the first parameter, or the first information includes the first parameter and is configured as "enabled", which means that the network device supports repeated transmission and reception of PUSCH based on PUSCH before the terminal device-specific parameter configuration.

[0265] In some embodiments, the first information further includes a second parameter, which is a parameter for repeated transmission of the PUSCH.

[0266] In some embodiments, the second parameter includes at least one of the following: a random access resource associated with the repeated transmission of the PUSCH, a reference signal received power RSRP threshold corresponding to the repeated transmission of the PUSCH, the number of PUSCH repeated transmissions, and a set of PUSCH repeated transmission numbers.

[0267] The random access resources of the embodiments of the present application are used by the terminal device to perform a random access procedure. The random access resources associated with the repeated transmission of the PUSCH can be a specified physical random access channel (PRACH) format, a specified PRACH preamble, or a specified RO (PRACH opportunity), as well as any other configurable random access resources.

[0268] Taking the PRACH preamble as an example of a random access resource associated with the repeated transmission of PUSCH, based on the contention-based PRACH preamble and the contention-free PRACH preamble provided at the random access opportunity, the first information provides the PRACH preamble associated with the repeated transmission of PUSCH, and the terminal device can select the PRACH preamble associated with the repeated transmission of PUSCH to initiate the random access process.

[0269] The first information of the embodiment of the present application provides a PRACH preamble associated with PUSCH repeated transmission as shown in Figure 13. The number of preambles provided at the random access opportunity is fixed. On the basis of the contention-based PRACH preamble and the contention-free PRACH preamble provided at the random access opportunity, a part of the preamble (i.e., the PRACH preamble associated with PUSCH repeated transmission) is separated for the repeated transmission of PUSCH.

[0270] The RSRP threshold value corresponding to the repeated transmission of the PUSCH in the embodiment of the present application is used by the terminal device to decide whether to request the transmission of the PUSCH based on the repeated transmission of the PUSCH based on the RSRP threshold value, and / or indicate the ability to transmit the PUSCH based on the repeated transmission of the PUSCH, and / or request the number of repeated transmissions of the PUSCH based on the RSRP threshold value.

[0271] For example, when the RSRP threshold value of the reference signal received power corresponding to the repeated transmission of PUSCH is -126dBm, if the RSRP measured by the terminal device is lower than the RSRP threshold value (-126dBm), the terminal device can select the PRACH preamble associated with the repeated transmission of PUSCH to initiate a random access process, that is, the terminal device requests the network device to send PUSCH based on the repeated transmission of PUSCH, and / or indicates the ability to send PUSCH based on the repeated transmission of PUSCH, and / or requests the number of repeated transmissions of PUSCH.

[0272] The number of PUSCH retransmissions in the embodiment of the present application may be carried in the first information, or may be agreed upon by the network device and the terminal device (i.e., the default number). Regarding the number of PUSCH retransmissions, it is only valid for terminals that request to send PUSCH based on PUSCH retransmissions, and / or indicate the ability to send PUSCH based on PUSCH retransmissions, and / or request the number of PUSCH retransmissions. For example, the first information provides the number of PUSCH retransmissions K=2 or 4 or 8, and the terminal device requests to send PUSCH based on PUSCH retransmissions, and / or indicates the ability to send PUSCH based on PUSCH retransmissions, and / or requests the number of PUSCH retransmissions. After that, the terminal device repeatedly sends PUSCH K times based on the PUSCH retransmission method.

[0273] The PUSCH retransmission number set of the embodiment of the present application can be carried in the first information, or it can be agreed upon by the network device and the terminal device (i.e., the default). Regarding the PUSCH retransmission number set, it is only valid for terminals that request to send PUSCH based on PUSCH retransmission, and / or indicate the ability to send PUSCH based on PUSCH retransmission, and / or request the number of PUSCH retransmissions. For example, the first information provides a PUSCH retransmission number set K = {1, 2, 4, 8}, and the terminal device requests to send PUSCH based on PUSCH retransmission, and / or indicates the ability to send PUSCH based on PUSCH retransmission, and / or requests the number of PUSCH retransmissions. After that, the terminal device repeats sending PUSCH K1 times based on the PUSCH retransmission mode. K1 is a value in the set K.

[0274] The first information may be carried by a system message, such as SIB1; the first information may also be carried by a RAR message.

[0275] Subsequently, the terminal device sends second information to the network device, which is used for at least one of the following: requesting to send PUSCH based on repeated transmission of PUSCH; indicating the ability to send PUSCH based on repeated transmission of PUSCH; and requesting the number of repeated transmissions of PUSCH.

[0276] The second information can be carried by Msg1, for example, choosing to initiate a random access process on a random access resource associated with PUSCH repeated transmission; optionally, the random access resource associated with PUSCH repeated transmission is further associated with the number of PUSCH repeated transmissions, such as different random access resources are associated with different numbers of PUSCH repeated transmissions such as 2 or 4 or 8, then the terminal device chooses to initiate a random access process on a certain random access resource, for requesting the corresponding number of PUSCH repeated transmissions from the network device.

[0277] The second information can also be carried in Msg3. The specific solutions are as follows:

[0278] In one implementation, the second information may be carried by a MAC CE.

[0279] For example, 1 bit in the payload of the first MAC CE is used to carry the second information. When the bit is set to 1, it indicates a request for repeated transmission of PUSCH based on PUSCH, and / or indicates the ability to send PUSCH based on repeated transmission of PUSCH; when the bit is set to 0, it indicates no request for repeated transmission of PUSCH based on PUSCH, and / or does not indicate the ability to send PUSCH based on repeated transmission of PUSCH; optionally, 2 bits in the payload of the first MAC CE are used to request the number of repeated transmissions of PUSCH, for example, the bit domain values ​​of "00", "01", "10" and "11" respectively indicate the number of repeated transmissions of PUSCH 2, 4, 8 and no request for repeated transmission of PUSCH.

[0280] For another example, the second information is carried by the second MAC CE, and the second MAC CE corresponds to an LCID and has a payload size of 0. If the terminal device transmits the second MAC CE in Msg3, it indicates a request for repeated transmission of PUSCH based on PUSCH, and / or indicates the ability to send PUSCH based on repeated transmission of PUSCH; if the terminal device does not transmit the second MAC CE in Msg3, it indicates that repeated transmission of PUSCH based on PUSCH is not requested, and / or the ability to send PUSCH based on PUSCH is not indicated; optionally, a third MAC CE with a different LCID is introduced to associate different PDSCH repeated transmission times, such as 2 or 4 or 8, and the terminal device requests the corresponding PUSCH repeated transmission times from the network device by transmitting the third MAC CE associated with the PUSCH repeated transmission times in Msg3.

[0281] For another example, the second information is carried by the second MAC CE and the fourth MAC CE, and the second MAC CE and the fourth MAC CE respectively correspond to an LCID and the payload size is 0. If the terminal device transmits the second MAC CE in Msg3, it indicates a request for repeated transmission of PUSCH based on PUSCH, and / or indicates the ability to send PUSCH based on repeated transmission of PUSCH; if the terminal device transmits the fourth MAC CE in Msg3, it indicates no request for repeated transmission of PUSCH based on PUSCH, and / or does not indicate the ability to send PUSCH based on PUSCH; optionally, a third MAC CE with a different LCID is introduced to associate different PUSCH repeated transmission times, such as 2 or 4 or 8. The terminal device requests the corresponding PUSCH repeated transmission times from the network device by transmitting the third MAC CE associated with the PUSCH repeated transmission times in Msg3.

[0282] In another implementation, the second information may be carried through radio resource control (RRC) signaling. For example, the first reserved bit field in the RRC signaling corresponding to the existing Msg3 may be used to request repeated transmission of the PUSCH based on the PUSCH, and / or to indicate the capability of repeatedly transmitting the PUSCH based on the PUSCH; optionally, the number of repeated transmissions of the PUSCH may be carried through the second reserved bit field in the RRC signaling, for example, the second reserved bit field values ​​of "00", "01", "10", and "11" respectively indicate the number of repeated transmissions of the PUSCH as 2, 4, 8, and no request for repeated transmission of the PUSCH.

[0283] In another implementation, the second information can be carried by the LCID corresponding to the common control channel CCCH. Generally, the channel length of CCCH includes 48 bits and 64 bits. Therefore, CCCH can specifically include the first common control channel CCCH1 (the channel length can be 48 bits) and / or the second common control channel CCCH2 (the channel length can be 64 bits). The LCID corresponding to CCCH1 and CCCH2 here is an unoccupied LCID. The subsequent terminal device can determine the corresponding CCCH according to the first transmission mode and the required channel length. When the first condition is met, the CCCH SDU transmitted by the terminal device 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 an occupied LCID). CCCH SDU is distinguished by different LCIDs, and the LCID is contained in the MAC subheader located before the CCCH SDU. The first condition includes: requesting to send PUSCH based on repeated transmission of PUSCH, and / or indicating the ability to send PUSCH based on repeated transmission of PUSCH. Optionally, a first common control channel CCCH1 or a second common control channel CCCH2 with different LCIDs is introduced to associate different PDSCH repetition transmission times, such as 2 / 4 / 8. The terminal device requests the corresponding PDSCH repetition transmission times from the network device by transmitting the SDU corresponding to CCCH1 or CCCH2 associated with the PDSCH repetition transmission times in Msg3.

[0284] In another implementation, the second information can be carried through the first reserved bit field in the MAC subheader. For example, when the first reserved bit field is set to 1, it indicates a request to send PUSCH based on repeated transmission of PUSCH, and / or indicates the ability to send PUSCH based on repeated transmission of PUSCH; optionally, the number of PUSCH repeated transmissions can be carried through the second reserved bit field in the MAC subheader. For example, the second reserved bit field value of "00", "01", "10" and "11" respectively indicates the number of PUSCH repeated transmissions of 2, 4, 8 and no request for PUSCH repeated transmission.

[0285] Finally, if the terminal device applies the PUSCH repetition number set, the network device sends third information to the terminal to determine the PDSCH repetition number ultimately applied for the PDSCH repetition transmission. For example, after the terminal device requests the ability to send PUSCH based on PUSCH repetition transmission and / or indicates the ability to send PUSCH based on PUSCH repetition transmission, the network device further determines the third information based on the PUSCH repetition number set in the first information or the protocol default, such as K = {1, 2, 4, 8}. If the number of elements included in the default PUSCH repetition transmission number set K provided by the first information is variable, for example, the PUSCH repetition transmission number set K may be: K = {1, 2} contains 2 PUSCH repetition transmission number candidate values; K = {1, 2, 4} contains 3 PUSCH repetition transmission number candidate values; or K = {1, 2, 4, 8} contains 4 PUSCH repetition transmission number candidate values, then the bit width P of the bit field required by the third information is also different, for example, K = {1, 2} / {1, 2, 4} / {1, 2, 4, 8} requires 1 / 2 / 2 bits respectively.

[0286] In order to ensure that the terminal device and the network device have the same understanding of the bit field of the third information, Determine the bit width P of the bit field of the third information, where Indicates rounding up, where I is the number of candidate values ​​in the PUSCH repetition transmission count set K or the maximum number of configurable candidate values. For example, if I is the number of candidate values ​​in the PUSCH repetition transmission count set K, then K = {1, 2} / {1, 2, 4} / {1, 2, 4, 8} requires a bit width of P = 1 / 2 / 2; if I is the maximum number of configurable candidate values ​​in the PUSCH repetition transmission count set K, that is, 4, then K = {1, 2} / {1, 2, 4} / {1, 2, 4, 8} requires a bit width of P = 2.

[0287] For example, the PUSCH repetition transmission number set K={1, 2, 4}, and the mapping relationship between the third information bit field and the PUSCH repetition transmission number is shown in Table 4.

[0288] Table 4 Mapping relationship between the third information bit field and the number of PUSCH repetition transmissions

[0289] It should be noted that, considering the value that the third information bit field can indicate 2 P It may be greater than the number of candidate values ​​in the PUSCH retransmission count set K. In order to ensure that the terminal device and the network device always have the same understanding of the PUSCH retransmission count indicated by the bit field, it is necessary to stipulate that the terminal device does not expect to be instructed with a value outside the PUSCH retransmission count set K, or when the terminal is instructed with a value outside the PUSCH retransmission count set K, the PUSCH retransmission shall apply the default PUSCH retransmission count or send a single PUSCH transmission.

[0290] For example, the network device uses 2 bits to indicate the number of PUSCH retransmissions and provides a PUSCH retransmission number set K = {1, 2, 4}. In this case, the value that the bit field can indicate is 2 2 =4 is greater than the number of candidate values ​​in K, 3, so it is necessary to stipulate that: if the terminal device requests the network device to send PUSCH based on repeated transmission of PUSCH and / or indicates the ability to send PUSCH based on repeated transmission of PUSCH, the terminal device does not expect to be instructed with a value other than K={1, 2, 4}, such as the bit field "11"; or when the bit field indicates "11", the repeated transmission of PUSCH applies the default number of PUSCH repeated transmissions, such as 2, or sends a single PUSCH transmission.

[0291] In addition, optionally, if the terminal device applies a number of PUSCH repetition transmissions, the network device sends third information to the terminal device, so that the terminal device determines the number of PUSCH repetition transmissions ultimately applied for the repeated transmission of the PUSCH based on the third information. For example, after the terminal device requests the ability to send PUSCH based on repeated transmission of the PUSCH and / or indicates the ability to send PUSCH based on repeated transmission of the PUSCH, the network device further determines the third information based on the first information or the second information or the default number of PUSCH repetition transmissions in the protocol, such as K=2 / 4 / 8. For example, the third information indicates "1" for applying K and "0" for not applying K.

[0292] The third information may be carried by DCI, such as DCI 0_0 for scheduling PUSCH; the third information may also be carried by RAR.

[0293] Example 3: The first transmission mode before the terminal device-specific parameter configuration includes TBS scaling of PDSCH

[0294] Currently, before the terminal device's dedicated parameters are configured, only some PDSCHs support TBS scaling, including PDSCHs scheduled by DCI 1_0 with P-RNTI, RA-RNTI, or MsgB-RNTI scrambled CRC, and the TBS is reduced to 1 / 4 of the original at most, with limited improvement in coverage performance. Therefore, the embodiments of the present application support TBS scaling for at least one PDSCH before the terminal device's dedicated parameters are configured, such as Msg4PDSCH, or support a smaller TBS scaling factor, such as Msg2 PDSCH, to further improve downlink coverage performance.

[0295] The PDSCH repetitive transmission process before the terminal device-specific parameter configuration according to an embodiment of the present application is shown in FIG15 , and is applied to a wireless communication system including a terminal device and a network device, including:

[0296] S1501. The network device sends first information to the terminal device, where the first information is used for at least one of the following: indicating that the network device supports sending PDSCH based on TBS scaling of PDSCH before the terminal device is configured with exclusive parameters, and parameters of TBS scaling of PDSCH.

[0297] S1502: The terminal device sends second information to the network device. The second information is used for at least one of the following:

[0298] Request PDSCH reception based on TBS scaling of PDSCH;

[0299] Indicates the capability of receiving PDSCH based on TBS scaling of PDSCH;

[0300] Request PDSCH TBS scaling factor.

[0301] S1503. The network device sends third information to the terminal device, where the third information is used to determine a target PDSCH TBS scaling factor.

[0302] In an embodiment of the present application, a network device sends a first information to a terminal device. The first information indicates that the network device supports sending PDSCH based on TBS scaling of PDSCH for coverage enhancement before the terminal device is configured with exclusive parameters, thereby improving the downlink coverage performance of the terminal device before the exclusive parameters are configured, thereby avoiding the situation where the terminal device cannot access the network.

[0303] First, the network device sends first information to the terminal device, which is used to indicate that the network device supports sending PDSCH based on TBS scaling of PDSCH before the terminal device is configured with exclusive parameters.

[0304] For example, the first information includes the first parameter, or the first information includes the first parameter and is configured as "enabled", which means that the network device supports TBS scaling based on PDSCH to send PDSCH before the terminal device-specific parameter configuration.

[0305] In some embodiments, the first information further includes a second parameter, which is a parameter for repeated transmission of the PDSCH.

[0306] 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 PDSCH TBS scaling factor set.

[0307] The random access resource of the embodiment of the present application is used for the terminal device to perform a random access process. For example, based on the contention-based PRACH preamble and the contention-free PRACH preamble provided at the random access opportunity, the first information provides a preamble for repeated transmission of PDSCH and a PRACH preamble for TBS scaling of PDSCH (as shown in Figure 16). If the PRACH preamble selected by the terminal device is only associated with PDSCH TBS scaling, it means that the terminal device only requests the network device to receive PDSCH based on TBS scaling and / or indicates the ability to receive PDSCH based on TBS scaling of PDSCH; if the PRACH preamble selected by the terminal device is associated with TBS scaling of PDSCH and repeated transmission of PDSCH, it means that the terminal device simultaneously requests the network device to receive PDSCH based on TBS scaling and / or indicates the ability to receive PDSCH based on TBS scaling of PDSCH, as well as requests the network device to receive PDSCH based on repeated transmission and / or indicates the ability to receive PDSCH based on repeated transmission of PDSCH.

[0308] The RSRP threshold value of the reference signal received power corresponding to the TBS scaling of the PDSCH in the embodiment of the present application, the terminal device decides whether to request the TBS scaling based on the PDSCH to receive the PDSCH, and / or indicates the ability to receive the PDSCH based on the TBS scaling of the PDSCH, and / or requests the PDSCH TBS scaling factor based on the RSRP threshold value. For example, when the RSRP threshold value of the reference signal received power corresponding to the TBS scaling of the PDSCH is -126dBm, if the RSRP measured by the terminal device is lower than the RSRP threshold value (-126dBm), the terminal device initiates a random access process through the random access resource associated with the TBS scaling of the PDSCH, that is, the terminal device requests the network device to receive the PDSCH based on the TBS scaling of the PDSCH, and / or indicates the ability to receive the PDSCH based on the TBS scaling of the PDSCH, and / or requests the PDSCH TBS scaling factor.

[0309] The PDSCH TBS scaling factor of the embodiment of the present application can be carried in the first information, or it can be agreed upon by the network device and the terminal device (i.e., the default). Regarding the PDSCH TBS scaling factor, it is only valid for terminals that request to receive PDSCH based on TBS scaling of PDSCH, and / or indicate the ability to receive PDSCH based on TBS scaling of PDSCH, and / or request the PDSCH TBS scaling factor. For example, the first information provides a PDSCH TBS scaling factor S=1 or 0.5 or 0.25 or 0.125, and the terminal device requests to receive PDSCH based on TBS scaling of PDSCH, and / or indicates the ability to receive PDSCH based on TBS scaling of PDSCH, and / or requests the PDSCH TBS scaling factor. After that, the terminal device applies the PDSCH TBS scaling factor S based on the TBS scaling method of PDSCH.

[0310] The PDSCH TBS scaling factor set of the embodiment of the present application can be carried in the first information, or it can be agreed upon by the network device and the terminal device (i.e., the default). Regarding the PDSCH TBS scaling factor set, it is only valid for terminals that request to receive PDSCH based on TBS scaling of PDSCH, and / or indicate the ability to receive PDSCH based on TBS scaling of PDSCH, and / or request PDSCH TBS scaling factor. For example, the first information provides PDSCH TBS scaling factor S={1, 0.5, 0.25, 0.125}, and the terminal device requests to receive PDSCH based on TBS scaling of PDSCH, and / or indicates the ability to receive PDSCH based on TBS scaling of PDSCH, and / or requests the PDSCH TBS scaling factor. The terminal device applies PDSCH TBS scaling factor S1 based on the TBS scaling method of PDSCH. S1 is a value in the set S.

[0311] The first information may be carried by a system message, such as SIB1; the first information may also be carried by a RAR message.

[0312] Subsequently, the terminal device sends second information to the network device, which is used for at least one of the following: requesting PDSCH-based TBS scaling to receive PDSCH; indicating the ability of PDSCH-based TBS scaling to receive PDSCH; and requesting a PDSCH TBS scaling factor.

[0313] The second information can be carried by Msg1, for example, choosing to initiate a random access process on a random access resource associated with the TBS scaling of the PDSCH; optionally, the random access resource associated with the TBS scaling of the PDSCH is further associated with a PDSCH TBS scaling factor, such as different random access resources are associated with different PDSCH TBS scaling factors such as 1 or 0.5 or 0.25 or 0.125, then the terminal device chooses to initiate a random access process on a certain random access resource, for requesting the corresponding PDSCH TBS scaling factor from the network device.

[0314] The second information can also be carried in Msg3. The specific solutions are as follows:

[0315] In one implementation, the second information may be carried by a MAC CE.

[0316] For example, 1 bit in the payload of the first MAC CE is used to carry the second information. When the bit is set to 1, it indicates a request for PDSCH-based TBS scaling to receive PDSCH, and / or indicates the ability of PDSCH-based TBS scaling to receive PDSCH; when the bit is set to 0, it indicates no request for PDSCH-based TBS scaling to receive PDSCH, and / or does not indicate the ability of PDSCH-based TBS scaling to receive PDSCH; optionally, 2 bits in the payload of the first MAC CE are used to request a PDSCH TBS scaling factor, for example, the bit domain values ​​of "00", "01", "10" and "11" respectively represent a PDSCH TBS scaling factor of 1 or 0.5 or 0.25 or 0.125.

[0317] For another example, the second information is carried by the second MAC CE, and the second MAC CE corresponds to an LCID and the payload size is 0. If the terminal device transmits the second MAC CE in Msg3, it indicates a request for PDSCH-based TBS scaling to receive PDSCH, and / or indicates the ability of PDSCH-based TBS scaling to receive PDSCH; if the terminal device does not transmit the second MAC CE in Msg3, it indicates that PDSCH-based TBS scaling to receive PDSCH is not requested, and / or the ability of PDSCH-based TBS scaling to receive PDSCH is not indicated; optionally, a third MAC CE with a different LCID is introduced to associate different PDSCH TBS scaling factors, such as 1 or 0.5 or 0.25 or 0.125, and the terminal device requests the corresponding PDSCH TBS scaling factor from the network device by transmitting the third MAC CE associated with the PDSCH TBS scaling factor in Msg3.

[0318] For another example, the second information is carried by the second MAC CE and the fourth MAC CE, and the second MAC CE and the fourth MAC CE respectively correspond to an LCID and the payload size is 0. If the terminal device transmits the second MAC CE in Msg3, it indicates a request for PDSCH-based TBS scaling to receive PDSCH, and / or indicates the ability of PDSCH-based TBS scaling to receive PDSCH; if the terminal device transmits the fourth MAC CE in Msg3, it indicates no request for PDSCH-based TBS scaling to receive PDSCH, and / or does not indicate the ability of PDSCH-based TBS scaling to receive PDSCH; optionally, a third MAC CE with different LCIDs is introduced to associate different PDSCH TBS scaling factors, such as 1 or 0.5 or 0.25 or 0.125, and the terminal device requests the corresponding PDSCH TBS scaling factor from the network device by transmitting the third MAC CE associated with the PDSCH TBS scaling factor in Msg3.

[0319] In another implementation, the second information may be carried by radio resource control RRC signaling. For example, the first reserved bit field in the RRC signaling corresponding to the existing Msg3 is used to request the PDSCH-based TBS scaling reception of the PDSCH, and / or to indicate the ability of the PDSCH-based TBS scaling reception of the PDSCH; optionally, the number of PDSCH repetition transmissions may be carried by the second reserved bit field in the RRC signaling, for example, the second reserved bit field values ​​of "00", "01", "10", and "11" represent PDSCH TBS scaling factors of 1, 0.5, 0.25, and 0.125, respectively.

[0320] In another implementation, the second information can be carried by the LCID corresponding to the common control channel CCCH. Generally, the channel length of CCCH includes 48 bits and 64 bits. Therefore, CCCH can specifically include the first common control channel CCCH1 (the channel length can be 48 bits) and / or the second common control channel CCCH2 (the channel length can be 64 bits). The LCID corresponding to CCCH1 and CCCH2 here is an unoccupied LCID. The subsequent terminal device can determine the corresponding CCCH according to the first transmission mode and the required channel length. When the first condition is met, the CCCH SDU transmitted by the terminal device 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 an occupied LCID). CCCH SDUs are distinguished by different LCIDs, and the LCID is contained in the MAC subheader located before the CCCH SDU. The first condition includes: requesting TBS scaling based on PDSCH to receive PDSCH, and / or indicating the ability to scale TBS based on PDSCH to receive PDSCH. Optionally, a first common control channel CCCH1 or a second common control channel CCCH2 with different LCIDs is introduced to associate different PDSCH repetition transmission times, such as 2 / 4 / 8. The terminal device requests the corresponding PDSCH repetition transmission times from the network device by transmitting the SDU corresponding to CCCH1 or CCCH2 associated with the PDSCH repetition transmission times in Msg3.

[0321] In another implementation, the second information can be carried through the first reserved bit field in the MAC subheader. For example, when the first reserved bit field is set to 1, it indicates a request for PDSCH-based TBS scaling to receive PDSCH, and / or indicates the ability to receive PDSCH based on PDSCH TBS scaling; optionally, the number of PDSCH repeated transmissions can be carried through the second reserved bit field in the MAC subheader. For example, the second reserved bit field value of "00", "01", "10" and "11" respectively represent a PDSCH TBS scaling factor of 1 or 0.5 or 0.25 or 0.125.

[0322] Finally, if the terminal device applies the PDSCH TBS scaling factor set, the network device sends a third information to the terminal device to determine the PDSCH TBS scaling factor ultimately applied for TBS scaling of the PDSCH. For example, after the terminal device requests to receive PDSCH based on TBS scaling of PDSCH, and / or indicates the ability to receive PDSCH based on TBS scaling of PDSCH, the network device further determines the third information based on the PDSCH TBS scaling factor set provided in the first information or the protocol default, such as S = {1, 0.5, 0.25, 0.125}.

[0323] If the number of elements in the PDSCH TBS scaling factor set S provided by the first information or the default is variable, the bit width P of the bit field required by the third information is also different. In order to ensure that the terminal device and the network device have the same understanding of the bit field of the third information, Determine the bit width P of the bit field of the third information, where represents rounding up, and I is the number of candidate values ​​in the PDSCH TBS scaling factor set S or the maximum number of configurable candidate values.

[0324] For example, the PDSCH TBS scaling factor set S={1, 0.5, 0.25}, and the mapping relationship between the third information bit field and the PDSCH TBS scaling factor is shown in Table 5.

[0325] Table 5 Mapping relationship between the third information bit field and the PDSCH TBS scaling factor

[0326] It should be noted that, considering the value that the third information bit field can indicate 2 PIt 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 understanding of the PDSCH TBS scaling factor indicated by the bit field, it is necessary to stipulate that: the terminal does not expect to be instructed a value outside the PDSCH TBS scaling factor set S, or when the terminal is instructed a value outside the PDSCH TBS scaling factor set S, the TBS scaling of the PDSCH applies the default PDSCH TBS scaling factor or receives a PDSCH transmission without TBS scaling.

[0327] For example, the network device uses 2 bits to indicate the PDSCH TBS scaling factor and provides a PDSCH TBS scaling factor set S = {1, 0.5, 0.25}. In this case, the value that the bit field can indicate is 2 2 =4 is greater than the number of candidate values ​​in S, 3, so it is necessary to stipulate that: if the terminal device requests the network device to receive PDSCH based on TBS scaling and / or indicates the ability to receive PDSCH based on TBS scaling, the terminal device does not expect to be indicated with a value other than S={1, 0.5, 0.25}, such as the bit field "11"; or when the bit field indicates "11", the TBS scaling of PDSCH applies the default PDSCH TBS scaling factor, such as 2, or receives PDSCH transmission without TBS scaling.

[0328] In addition, optionally, if the terminal device applies a PDSCH TBS scaling factor, the network device sends a third information to the terminal device, so that the terminal device determines the PDSCH TBS scaling factor ultimately applied for the TBS scaling of the PDSCH based on the third information. For example, after the terminal device requests to receive PDSCH based on TBS scaling of PDSCH, and / or indicates the ability to receive PDSCH based on TBS scaling of PDSCH, the network device needs to further receive the third information to determine whether to ultimately apply the PDSCH TBS scaling factor based on the PDSCH TBS scaling factor provided in the first information or the second information or the protocol default, such as S=0.5 / 0.25 / 0.125. For example, the third information indicates "1" for applying S and "0" for not applying S.

[0329] The third information may be carried by DCI, such as DCI 1_0 for scheduling PDSCH; the third information may also be carried by a RAR message.

[0330] The wireless communication method provided in the embodiment of the present application provides a coverage enhancement solution before the base terminal device-specific configuration parameters are provided, which can be implemented as follows:

[0331] 1) The network device sends the first information so that the terminal device knows whether the network device supports repeated transmission of PDSCH, TBS scaling of PDSCH, repeated transmission of PUSCH, and related information such as the number of repeated transmissions and TBS scaling factor;

[0332] 2) The terminal device sends a second message to let the network device know whether the terminal device covers the enhanced requirements or capabilities, so that the network device can perform reasonable resource scheduling;

[0333] 3) The network device sends the third information to determine the final applied PDSCH / PUSCH repetition number and PDSCH TBS scaling factor, ensuring that the network device and the terminal device have the same understanding of the repetition number and TBS scaling factor.

[0334] The wireless communication method provided in the embodiments of the present application is applicable to any system that applies a coverage enhancement solution, such as an NTN system.

[0335] The preferred embodiments of the present application are described in detail above in conjunction with the accompanying drawings. However, the present application is not limited to the specific details in the above embodiments. Within the technical concept of the present application, the technical solution of the present application can be subjected to a variety of simple modifications, and these simple modifications all fall within the scope of protection of the present application. For example, the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present application will no longer describe the various possible combinations separately. For another example, the various different embodiments of the present application can also be arbitrarily combined, as long as they do not violate the idea of ​​the present application, they should also be regarded as the contents disclosed in the present application. For another example, under the premise of no conflict, the various embodiments and / or the technical features in each embodiment described in the present application can be arbitrarily combined with the prior art, and the technical solution obtained after the combination should also fall within the scope of protection of the present application.

[0336] It should also be understood that in the various method embodiments of the present application, the sequence numbers of the above-mentioned processes do not imply a precedence in the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application. In addition, in the embodiments of the present application, the terms "downlink," "uplink," and "sidelink" are used to indicate the transmission direction of signals or data, where "downlink" is used to indicate the first direction of transmission of signals or data from a site to a user equipment in a cell, "uplink" is used to indicate the second direction of transmission of signals or data from a user equipment in a cell to a site, and "sidelink" is used to indicate the third direction of transmission of signals or data from user equipment 1 to user equipment 2. For example, "downlink signal" indicates that the transmission direction of the signal is the first direction. In addition, in the embodiments of the present application, the term "and / or" is merely a description of the association relationship between associated objects, indicating that three relationships can exist. Specifically, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this document generally indicates that the associated objects are in an "or" relationship.

[0337] FIG17 is a schematic diagram of the structure of a wireless communication device provided in an embodiment of the present application, which is applied to a network device. As shown in FIG17 , the wireless communication device 1700 includes:

[0338] The first sending unit 1701 is configured as a network device to send first information to a terminal device, where the first information is used to indicate whether the network device supports receiving or sending a first transmission based on a first transmission mode before the terminal device is configured with exclusive parameters, where the first transmission mode is used for coverage enhancement.

[0339] In some embodiments, the first transmission mode includes at least one of the following:

[0340] Repeated transmission of the physical downlink shared channel PDSCH;

[0341] Transport block size TBS scaling for PDSCH;

[0342] Repeated transmission of the physical uplink shared channel PUSCH.

[0343] In some embodiments, the first transmission includes at least one of the following:

[0344] Transmission of random access procedure;

[0345] Transmission after the random access process and before the terminal device is configured with dedicated parameter configuration.

[0346] In some embodiments, the first information is carried by one of the following:

[0347] System messages;

[0348] Random access response RAR message.

[0349] In some embodiments, the first information includes a first parameter, and the first parameter is used to indicate whether the network device supports receiving or sending the first transmission based on the first transmission mode before the terminal is configured with dedicated parameters.

[0350] In some embodiments, the first information includes a second parameter, which is a parameter of the first transmission mode.

[0351] In some embodiments, if the first transmission mode includes repeated transmission of PDSCH, the second parameter includes at least one of the following: random access resources associated with the repeated transmission of the PDSCH, the reference signal received power RSRP threshold corresponding to the repeated transmission of the PDSCH, the number of repeated transmissions of PDSCH and a set of repeated transmission numbers of PDSCH.

[0352] In some embodiments, if the first transmission mode includes TBS scaling of PDSCH, the second parameter includes at least one of the following: random access resources associated with the TBS scaling of the PDSCH, the RSRP threshold value corresponding to the TBS scaling of the PDSCH, a PDSCH TBS scaling factor and a PDSCH TBS scaling factor set.

[0353] In some embodiments, if the first transmission mode includes PUSCH repeated transmission, the second parameter includes at least one of the following: random access resources associated with the repeated transmission of the PUSCH, the reference signal received power RSRP threshold corresponding to the repeated transmission of the PUSCH, the number of PUSCH repeated transmissions and a set of PUSCH repeated transmission numbers.

[0354] In some embodiments, the network device further includes a first receiving unit configured to receive second information sent by the terminal device, where the second information is used for at least one of the following:

[0355] requesting to receive or send the first transmission based on the first transmission mode;

[0356] indicating a capability of receiving or sending the first transmission based on the first transmission mode;

[0357] A transmission factor is requested, the transmission factor including a number of repetitions and / or a scaling factor.

[0358] In some embodiments, the second information is carried by one of the following:

[0359] Message 1 Msg1;

[0360] Message three Msg3.

[0361] In some embodiments, the second information includes one of the following in the Msg3:

[0362] Media Access Control Element MAC CE;

[0363] Radio Resource Control (RRC) signaling;

[0364] LCID corresponding to the common control channel CCCH;

[0365] Reserved bits in the MAC subheader.

[0366] In some embodiments, the first sending unit 1701 is further configured for the network device to send third information to the terminal device, where the third information is used to determine a target transmission factor, and the target transmission factor is the transmission factor applied by the first transmission mode.

[0367] In some embodiments, the target transfer factor is one of the following:

[0368] a first transmission factor, wherein the first transmission factor is a transmission factor within a first transmission factor set;

[0369] a second transfer factor, wherein the second transfer factor is a default transfer factor;

[0370] A third transmission factor, where the third transmission factor is a transmission factor carried by the first information or the second information.

[0371] In some embodiments, the first set of transfer factors is one of the following:

[0372] a set of transmission factors carried by the first information;

[0373] The default transfer factor set.

[0374] In some embodiments, if the third information is used to indicate the first transmission factor, the target transmission factor is the first transmission factor.

[0375] In some embodiments, the third information is used to indicate a value outside the first transmission factor set, then the target transmission factor is the second transmission factor, or the first transmission does not apply the first transmission mode.

[0376] In some embodiments, the terminal device does not expect the third information to indicate a value outside the first set of transmission factors.

[0377] In some embodiments, the third information is used to indicate whether the first transmission mode applies the second transmission factor or the third transmission factor.

[0378] In some embodiments, if the third information is used to indicate that the first transmission mode applies the second transmission factor or the third transmission factor, the target transmission factor is the second transmission factor or the third transmission factor.

[0379] In some embodiments, if the third information is used to indicate that the first transmission mode does not apply the second transmission factor or the third transmission factor, the first transmission mode does not apply.

[0380] In some embodiments, the third information is carried by one of the following:

[0381] Downlink control information DCI;

[0382] RAR message.

[0383] In some embodiments, if the first transmission mode includes repeated PDSCH transmission, the transmission factor includes the number of repeated PDSCH transmissions;

[0384] If the first transmission mode includes TBS scaling of the PDSCH, the transmission factor includes a TBS scaling factor;

[0385] If the first transmission mode includes PUSCH repeated transmission, the transmission factor includes the number of PUSCH repeated transmissions.

[0386] FIG18 is a schematic diagram of the structure of a wireless communication device provided in an embodiment of the present application, which is applied to a terminal device. As shown in FIG18 , the wireless communication device 1800 includes:

[0387] The second receiving unit 1801 is configured as a terminal device to receive first information sent by a network device, where the first information is used to indicate whether the network device supports receiving or sending a first transmission based on a first transmission mode before the terminal is configured with exclusive parameters, where the first transmission mode is used for coverage enhancement.

[0388] In some embodiments, the first transmission mode includes at least one of the following:

[0389] Repeated transmission of the physical downlink shared channel PDSCH;

[0390] Transport block size TBS scaling for PDSCH;

[0391] Repeated transmission of the physical uplink shared channel PUSCH.

[0392] In some embodiments, the first transmission includes at least one of the following:

[0393] Transmission of random access procedure;

[0394] Transmission after the random access process and before the terminal device is configured with dedicated parameter configuration.

[0395] In some embodiments, the first information is carried by one of the following:

[0396] System messages;

[0397] Random access response RAR message.

[0398] In some embodiments, the first information includes a first parameter, and the first parameter is used to indicate whether the network device supports receiving or sending the first transmission based on the first transmission mode before the terminal is configured with dedicated parameters.

[0399] In some embodiments, the first information includes a second parameter, which is a parameter of the first transmission mode.

[0400] In some embodiments, if the first transmission mode includes repeated transmission of PDSCH, the second parameter includes at least one of the following: random access resources associated with the repeated transmission of the PDSCH, the reference signal received power RSRP threshold corresponding to the repeated transmission of the PDSCH, the number of repeated transmissions of PDSCH and a set of repeated transmission numbers of PDSCH.

[0401] In some embodiments, if the first transmission mode includes TBS scaling of PDSCH, the second parameter includes at least one of the following: random access resources associated with the TBS scaling of the PDSCH, the RSRP threshold value corresponding to the TBS scaling of the PDSCH, a PDSCH TBS scaling factor and a PDSCH TBS scaling factor set.

[0402] In some embodiments, if the first transmission mode includes PUSCH repeated transmission, the second parameter includes at least one of the following: random access resources associated with the repeated transmission of the PUSCH, the reference signal received power RSRP threshold corresponding to the repeated transmission of the PUSCH, the number of PUSCH repeated transmissions and a set of PUSCH repeated transmission numbers.

[0403] In some embodiments, the terminal device further includes a second sending unit configured to send second information to the network device, where the second information is used for at least one of the following:

[0404] requesting to receive or send the first transmission based on the first transmission mode;

[0405] indicating a capability of receiving or sending the first transmission based on the first transmission mode;

[0406] A transmission factor is requested, the transmission factor including a number of repetitions and / or a scaling factor.

[0407] In some embodiments, the second information is carried by one of the following:

[0408] Message 1 Msg1;

[0409] Message three Msg3.

[0410] In some embodiments, the second information includes one of the following in the Msg3:

[0411] Media Access Control Element MAC CE;

[0412] Radio Resource Control (RRC) signaling;

[0413] LCID corresponding to the common control channel CCCH;

[0414] Reserved bits in the MAC subheader.

[0415] In some embodiments, the second receiving unit 1801 is further configured to receive third information sent by the network device at the terminal, where the third information is used to determine a target transmission factor, and the target transmission factor is the transmission factor applied by the first transmission mode.

[0416] In some embodiments, the target transfer factor is one of the following:

[0417] a first transmission factor, wherein the first transmission factor is a transmission factor within a first transmission factor set;

[0418] a second transfer factor, wherein the second transfer factor is a default transfer factor;

[0419] A third transmission factor, where the third transmission factor is a transmission factor carried by the first information or the second information.

[0420] In some embodiments, the first set of transfer factors is one of the following:

[0421] a set of transmission factors carried by the first information;

[0422] The default transfer factor set.

[0423] In some embodiments, if the third information is used to indicate the first transmission factor, the target transmission factor is the first transmission factor.

[0424] In some embodiments, the third information is used to indicate a value outside the first transmission factor set, then the target transmission factor is the second transmission factor, or the first transmission does not apply the first transmission mode.

[0425] In some embodiments, the terminal device does not expect the third information to indicate a value outside the first set of transmission factors.

[0426] In some embodiments, the third information is used to indicate whether the first transmission mode applies the second transmission factor or the third transmission factor.

[0427] In some embodiments, if the third information is used to indicate that the first transmission mode applies the second transmission factor or the third transmission factor, the target transmission factor is the second transmission factor or the third transmission factor.

[0428] In some embodiments, if the third information is used to indicate that the first transmission mode does not apply the second transmission factor or the third transmission factor, the first transmission mode does not apply.

[0429] In some embodiments, the third information is carried by one of the following:

[0430] Downlink control information DCI;

[0431] RAR message.

[0432] In some embodiments, if the first transmission mode includes repeated PDSCH transmission, the transmission factor includes the number of repeated PDSCH transmissions;

[0433] If the first transmission mode includes TBS scaling of the PDSCH, the transmission factor includes a TBS scaling factor;

[0434] If the first transmission mode includes PUSCH repeated transmission, the transmission factor includes the number of PUSCH repeated transmissions.

[0435] Those skilled in the art should understand that the relevant description of the above-mentioned wireless communication device in the embodiment of the present application can be understood with reference to the relevant description of the wireless communication method in the embodiment of the present application.

[0436] Figure 19 is a schematic diagram of a communication device 1900 provided in an embodiment of the present application. The communication device can 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 a memory to implement the method in the embodiment of the present application.

[0437] Optionally, as shown in FIG19 , the communication device 1900 may further include a memory 1920. The processor 1910 may call and execute a computer program from the memory 1920 to implement the method in the embodiment of the present application.

[0438] The memory 1920 may be a separate device independent of the processor 1910 , or may be integrated into the processor 1910 .

[0439] Optionally, as shown in FIG19 , the communication device 1900 may further include a transceiver 1930 , and the processor 1910 may control the transceiver 1930 to communicate with other devices, specifically, to send information or data to other devices, or to receive information or data sent by other devices.

[0440] The transceiver 1930 may include a transmitter and a receiver. The transceiver 1930 may further include an antenna, and the number of antennas may be one or more.

[0441] Optionally, the communication device 1900 may specifically be a network device in an embodiment of the present application, and the communication device 1900 may implement the corresponding processes implemented by the network device in each method in the embodiment of the present application. For the sake of brevity, they will not be repeated here.

[0442] Optionally, the communication device 1900 may specifically be a mobile terminal / terminal device of an embodiment of the present application, and the communication device 1900 may implement the corresponding processes implemented by the mobile terminal / terminal device in each method of the embodiment of the present application. For the sake of brevity, they will not be repeated here.

[0443] Figure 20 is a schematic structural diagram of a chip according to an embodiment of the present application. The chip 2000 shown in Figure 20 includes a processor 2010, which can call and run a computer program from a memory to implement the method according to the embodiment of the present application.

[0444] Optionally, as shown in FIG20 , the chip 2000 may further include a memory 2020. The processor 2010 may call and execute a computer program from the memory 2020 to implement the method in the embodiment of the present application.

[0445] The memory 2020 may be a separate device independent of the processor 2010 , or may be integrated into the processor 2010 .

[0446] Optionally, the chip 2000 may further include an input interface 2030. The processor 2010 may control the input interface 2030 to communicate with other devices or chips, and specifically, may obtain information or data sent by other devices or chips.

[0447] Optionally, the chip 2000 may further include an output interface 2040. The processor 2010 may control the output interface 2040 to communicate with other devices or chips, and specifically, may output information or data to other devices or chips.

[0448] Optionally, the chip can be applied to the network device in the embodiments of the present application, and the chip can implement the corresponding processes implemented by the network device in each method of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0449] Optionally, the chip can be applied to the mobile terminal / terminal device in the embodiments of the present application, and the chip can implement the corresponding processes implemented by the mobile terminal / terminal device in the various methods of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0450] It should be understood that the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.

[0451] FIG21 is a schematic block diagram of a communication system 2100 provided in an embodiment of the present application. As shown in FIG21 , the communication system 2100 includes a terminal device 2110 and a network device 2120 .

[0452] Among them, the terminal device 2110 can be used to implement the corresponding functions implemented by the terminal device in the above method, and the network device 2120 can be used to implement the corresponding functions implemented by the network device in the above method. For the sake of brevity, they are not repeated here.

[0453] It should be understood that the processor of the embodiments of the present application may be an integrated circuit chip with signal processing capabilities. During implementation, each step of the above method embodiment can be completed by hardware integrated logic circuits in the processor or software instructions. The above processor can be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components. The various methods, steps, and logic block diagrams disclosed in the embodiments of the present application can be implemented or executed. The general-purpose processor can be a microprocessor or any conventional processor. The steps of the method disclosed in the embodiments of the present application can be directly embodied as being executed by a hardware decoding processor, or can be executed by a combination of hardware and software modules in the decoding processor. The software module can be located in a storage medium mature in the art, such as random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, registers, etc. The storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.

[0454] It is understood that the memory in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memories. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM), which is used as an external cache. By way of example and not limitation, many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct RAM bus random access memory (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0455] It should be understood that the above-mentioned memories are exemplary but not restrictive. For example, the memories in the embodiments of the present application may also be static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct RAM RAM (DR RAM), etc. In other words, the memories in the embodiments of the present application are intended to include, but are not limited to, these and any other suitable types of memories.

[0456] An embodiment of the present application also provides a computer-readable storage medium for storing a computer program.

[0457] Optionally, the computer-readable storage medium can be applied to the network device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the network device in the various methods of the embodiments of the present application. For the sake of brevity, they are not repeated here.

[0458] Optionally, the computer-readable storage medium can be applied to the mobile terminal / terminal device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the mobile terminal / terminal device in the various methods of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0459] An embodiment of the present application also provides a computer program product, including computer program instructions.

[0460] Optionally, the computer program product can be applied to the network device in the embodiments of the present application, and the computer program instructions enable the computer to execute the corresponding processes implemented by the network device in the various methods of the embodiments of the present application. For the sake of brevity, they are not repeated here.

[0461] Optionally, the computer program product can be applied to the mobile terminal / terminal device in the embodiments of the present application, and the computer program instructions enable the computer to execute the corresponding processes implemented by the mobile terminal / terminal device in the various methods of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0462] The embodiment of the present application also provides a computer program.

[0463] Optionally, the computer program can be applied to the network device in the embodiments of the present application. When the computer program runs on a computer, the computer executes the corresponding processes implemented by the network device in the various methods of the embodiments of the present application. For the sake of brevity, they are not described here.

[0464] Optionally, the computer program can be applied to the mobile terminal / terminal device in the embodiments of the present application. When the computer program runs on the computer, the computer executes the corresponding processes implemented by the mobile terminal / terminal device in the various methods of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0465] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0466] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0467] In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of the units is merely a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0468] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0469] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0470] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0471] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A wireless communication method, the method comprising: A network device sends first information to a terminal device, where the first information is used to indicate whether the network device supports receiving or sending a first transmission based on a first transmission mode before the terminal device is configured with exclusive parameters, where the first transmission mode is used for coverage enhancement.

2. The method according to claim 1, wherein: The first transmission mode includes at least one of the following: Repeated transmission of the physical downlink shared channel PDSCH; Transport block size TBS scaling for PDSCH; Repeated transmission of the physical uplink shared channel PUSCH.

3. The method according to claim 1 or 2, wherein: The first transmission includes at least one of the following: Transmission of random access procedure; Transmission after the random access process and before the terminal device is configured with dedicated parameters.

4. The method according to any one of claims 1 to 3, wherein: The first information is carried by one of the following: System messages; Random access response RAR message.

5. The method according to any one of claims 1 to 4, wherein: The first information includes a first parameter, where the first parameter is used to indicate whether the network device supports receiving or sending the first transmission based on the first transmission mode before the terminal is configured with dedicated parameters.

6. The method according to any one of claims 1 to 5, wherein: The first information includes a second parameter, and the second parameter is a parameter of the first transmission mode.

7. The method according to claim 6, wherein: If the first transmission mode includes repeated transmission of PDSCH, the second parameter includes at least one of the following: random access resources 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 repeated transmissions of PDSCH and a set of repeated transmissions of PDSCH.

8. The method according to claim 6, wherein: If the first transmission mode includes TBS scaling of PDSCH, the second parameter includes at least one of the following: random access resources associated with the TBS scaling of the PDSCH, an RSRP threshold value corresponding to the TBS scaling of the PDSCH, a PDSCH TBS scaling factor and a PDSCH TBS scaling factor set.

9. The method according to claim 6, wherein: If the first transmission mode includes PUSCH repeated transmission, the second parameter includes at least one of the following: random access resources associated with the repeated transmission of the PUSCH, a reference signal received power RSRP threshold corresponding to the repeated transmission of the PUSCH, the number of PUSCH repeated transmissions and a set of PUSCH repeated transmission numbers.

10. The method according to any one of claims 1 to 9, wherein: The method further comprises: The network device receives second information sent by the terminal device, where the second information is used for at least one of the following: Requesting to receive or send the first transmission based on the first transmission mode; indicating a capability of receiving or sending the first transmission based on the first transmission mode; A transmission factor is requested, the transmission factor including a number of repetition transmissions and / or a scaling factor.

11. The method according to claim 10, wherein: The second information is carried by one of the following: Message 1 Msg1; Message three Msg3.

12. The method according to claim 11, wherein: The second information includes one of the following in the Msg3: Media Access Control Element MAC CE; Radio Resource Control (RRC) signaling; LCID corresponding to the common control channel CCCH; Reserved bits in the MAC subheader.

13. The method according to any one of claims 1 to 12, wherein: The method further comprises: The network device sends third information to the terminal device, where the third information is used to determine a target transmission factor, and the target transmission factor is a transmission factor applied by the first transmission mode.

14. The method according to claim 13, wherein: The target transfer factor is one of the following: a first transmission factor, wherein the first transmission factor is a transmission factor within a first transmission factor set; a second transfer factor, wherein the second transfer factor is a default transfer factor; A third transmission factor, where the third transmission factor is a transmission factor carried by the first information or the second information.

15. The method according to claim 14, wherein: The first transmission factor set is one of the following: a set of transmission factors carried by the first information; The default transfer factor set.

16. The method according to claim 14 or 15, wherein: If the third information is used to indicate the first transmission factor, the target transmission factor is the first transmission factor.

17. The method according to claim 14 or 15, wherein: The third information is used to indicate a value outside the first transmission factor set, then the target transmission factor is the second transmission factor, or the first transmission does not apply the first transmission mode.

18. The method according to any one of claims 14 to 16, wherein: The terminal device does not expect the third information to indicate a value outside the first set of transmission factors.

19. The method according to claim 14, wherein: The third information is used to indicate whether the first transmission mode applies the second transmission factor or the third transmission factor.

20. The method according to claim 19, wherein: If the third information is used to indicate that the first transmission mode applies the second transmission factor or the third transmission factor, the target transmission factor is the second transmission factor or the third transmission factor.

21. The method according to claim 19, wherein: If the third information is used to indicate that the first transmission mode does not apply the second transmission factor or the third transmission factor, the first transmission mode does not apply.

22. The method according to any one of claims 13 to 21, wherein: The third information is carried by one of the following: Downlink control information DCI; RAR message.

23. The method according to any one of claims 10 to 22, wherein: If the first transmission mode includes repeated transmission of the PDSCH, the transmission factor includes the number of repeated transmissions of the PDSCH; If the first transmission mode includes TBS scaling of the PDSCH, the transmission factor includes a TBS scaling factor; If the first transmission mode includes PUSCH repeated transmission, the transmission factor includes the number of PUSCH repeated transmissions.

24. A wireless communication method, the method comprising: A terminal device receives first information sent by a network device, where the first information is used to indicate whether the network device supports receiving or sending a first transmission based on a first transmission mode before the terminal device is configured with exclusive parameters, where the first transmission mode is used for coverage enhancement.

25. The method according to claim 24, wherein: The first transmission mode includes at least one of the following: Repeated transmission of the physical downlink shared channel PDSCH; Transport block size TBS scaling for PDSCH; Repeated transmission of the physical uplink shared channel PUSCH.

26. The method according to claim 24 or 25, wherein: The first transmission includes at least one of the following: Transmission of random access procedure; Transmission after the random access process and before the terminal device is configured with dedicated parameters.

27. The method according to any one of claims 24 to 26, wherein: The first information is carried by one of the following: System messages; Random access response RAR message.

28. The method according to any one of claims 24 to 27, wherein: The first information includes a first parameter, where the first parameter is used to indicate whether the network device supports receiving or sending the first transmission based on the first transmission mode before the terminal is configured with dedicated parameters.

29. The method according to any one of claims 24 to 28, wherein: The first information includes a second parameter, and the second parameter is a parameter of the first transmission mode.

30. The method of claim 29, wherein: If the first transmission mode includes repeated transmission of PDSCH, the second parameter includes at least one of the following: random access resources 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 repeated transmissions of PDSCH and a set of repeated transmissions of PDSCH.

31. The method of claim 29, wherein: If the first transmission mode includes TBS scaling of PDSCH, the second parameter includes at least one of the following: random access resources associated with the TBS scaling of the PDSCH, an RSRP threshold value corresponding to the TBS scaling of the PDSCH, a PDSCH TBS scaling factor and a PDSCH TBS scaling factor set.

32. The method of claim 29, wherein: If the first transmission mode includes PUSCH repeated transmission, the second parameter includes at least one of the following: random access resources associated with the repeated transmission of the PUSCH, a reference signal received power RSRP threshold corresponding to the repeated transmission of the PUSCH, the number of PUSCH repeated transmissions and a set of PUSCH repeated transmission numbers.

33. The method according to any one of claims 24 to 32, wherein: The method further comprises: The terminal device sends second information to the network device, where the second information is used for at least one of the following: Requesting to receive or send the first transmission based on the first transmission mode; indicating a capability of receiving or sending the first transmission based on the first transmission mode; A transmission factor is requested, the transmission factor including a number of repetition transmissions and / or a scaling factor.

34. The method of claim 33, wherein: The second information is carried by one of the following: Message 1 Msg1; Message three Msg3.

35. The method of claim 34, wherein: The second information includes one of the following in the Msg3: Media Access Control Element MAC CE; Radio Resource Control (RRC) signaling; LCID corresponding to the common control channel CCCH; Reserved bits in the MAC subheader.

36. The method according to any one of claims 24 to 35, wherein: The method further comprises: The terminal is configured to receive third information sent by the network device, where the third information is used to determine a target transmission factor, and the target transmission factor is a transmission factor applied by the first transmission mode.

37. The method of claim 36, wherein: The target transfer factor is one of the following: a first transmission factor, wherein the first transmission factor is a transmission factor within a first transmission factor set; a second transfer factor, wherein the second transfer factor is a default transfer factor; A third transmission factor, where the third transmission factor is a transmission factor carried by the first information or the second information.

38. The method of claim 37, wherein: The first transmission factor set is one of the following: a set of transmission factors carried by the first information; The default transfer factor set.

39. The method according to claim 37 or 38, wherein: If the third information indicates the first transmission factor, the target transmission factor is the first transmission factor.

40. The method according to claim 37 or 38, wherein: If the third information indicates a value outside the first transmission factor set, the target transmission factor is the second transmission factor, or the first transmission does not apply the first transmission mode.

41. The method according to any one of claims 37 to 39, wherein: The terminal device does not expect the third information to indicate a value outside the first set of transmission factors.

42. The method of claim 37, wherein: The third information indicates whether the second transmission factor or the third transmission factor is applied to the first transmission mode.

43. The method of claim 42, wherein: If the third information indicates that the first transmission mode applies the second transmission factor or the third transmission factor, the target transmission factor is the second transmission factor or the third transmission factor.

44. The method of claim 42, wherein: If the third information indicates that the first transmission mode does not apply the second transmission factor or the third transmission factor, the first transmission mode does not apply.

45. The method according to any one of claims 37 to 45, wherein: The third information is carried by one of the following: Downlink control information DCI; RAR message.

46. ​​A method according to any one of claims 33 to 45, wherein: If the first transmission mode includes repeated transmission of the PDSCH, the transmission factor includes the number of repeated transmissions of the PDSCH; If the first transmission mode includes TBS scaling of the PDSCH, the transmission factor includes a TBS scaling factor; If the first transmission mode includes PUSCH repeated transmission, the transmission factor includes the number of PUSCH repeated transmissions.

47. A wireless communication device, applied to a network device, comprising: A sending unit is configured as a network device to send first information to a terminal device, wherein the first information is used to indicate whether the network device supports receiving or sending a first transmission based on a first transmission mode before the terminal is configured with exclusive parameters, and the first transmission mode is used for coverage enhancement.

48. A wireless communication device, applied to a terminal device, comprising: The receiving unit is configured as a terminal device to receive first information sent by a network device, wherein the first information is used to indicate whether the network device supports receiving or sending a first transmission based on a first transmission mode before the terminal is configured with exclusive parameters, and the first transmission mode is used for coverage enhancement.

49. A communication device comprising: A processor and a memory, the memory being used to store a computer program, the processor being used to call and run the computer program stored in the memory, and to execute the method as claimed in any one of claims 1 to 23, or to execute the method as claimed in any one of claims 24 to 46.

50. A chip, comprising: A processor, configured to call and run a computer program from a memory, so that a device equipped with the chip executes a method as claimed in any one of claims 1 to 23, or executes a method as claimed in any one of claims 24 to 46.

51. A computer-readable storage medium for storing a computer program, wherein the computer program enables a computer to execute the method according to any one of claims 1 to 23, or the method according to any one of claims 24 to 46.

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

53. A computer program, the computer program causing a computer to execute the method according to any one of claims 1 to 23, or the method according to any one of claims 24 to 46.

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