Wireless communication method, device, and storage medium

Abstract

Embodiments of the present application provide a wireless communication method, a device, and a storage medium. The method comprises: receiving a first downlink channel or signal on a first time-frequency resource of a first cell, wherein the first downlink channel or signal is used for determining a second time-frequency resource, and the second time-frequency resource is used for transmitting a second downlink channel or signal, and / or a third downlink channel or signal; and determining that the second time-frequency resource is used for transmitting the second downlink channel or signal, and / or the third downlink channel or signal.

Description

Wireless communication method, device and storage medium TECHNICAL FIELD

[0001] Embodiments of the present application relate to the field of mobile communication technology, in particular to a wireless communication method, device and storage medium. BACKGROUND

[0002] Network energy saving (NES) is of great significance to environmental sustainability, reducing the impact on the environment (reducing greenhouse gas emissions), and saving operating costs. Energy consumption has become a key part of the operational expenditure (OPEX) of operators. Most of the energy consumption comes from the wireless access network, more specifically, from the active antenna unit (AAU), and the data center and fiber transmission account for a small share. The power consumption of a wireless access can be divided into two parts: the dynamic part only includes the power consumption when data is being transmitted or received; the static part includes the power consumption necessary for the operation of maintaining the wireless access equipment at all times, including the power consumption when no data is being transmitted or received.

[0003] With the development of communication technology and the evolution of communication systems, energy consumption has gradually become an important indicator of the operating efficiency of communication systems.

[0004] SUMMARY

[0005] Embodiments of the present application provide a wireless communication method, device and storage medium.

[0006] The wireless communication method provided by the embodiments of the present application is executed by a terminal device, and includes:

[0007] receiving a first downlink channel or signal on a first time-frequency resource of a first cell, the first downlink channel or signal being used to determine a second time-frequency resource, the second time-frequency resource being used to transmit a second downlink channel or signal and / or a third downlink channel or signal;

[0008] determining that the second time-frequency resource is used to transmit the second downlink channel or signal and / or the third downlink channel or signal.

[0009] The wireless communication method provided by the embodiments of the present application is executed by a network device, and includes:

[0010] sending a first downlink channel or signal on a first time-frequency resource of a first cell, the first downlink channel or signal being used to determine a second time-frequency resource, the second time-frequency resource being used to transmit a second downlink channel or signal and / or a third downlink channel or signal.

[0011] The terminal device provided by the embodiments of the present application comprises:

[0012] The first communication unit is configured to receive a first downlink channel or signal on a first time-frequency resource of a first cell, the first downlink channel or signal being used to determine a second time-frequency resource, the second time-frequency resource being used to transmit a second downlink channel or signal and / or a third downlink channel or signal.

[0013] The determining unit is configured to determine that the second time-frequency resource is used to transmit the second downlink channel or signal and / or the third downlink channel or signal.

[0014] The network device provided by the embodiments of the present application comprises:

[0015] The second communication unit is configured to send a first downlink channel or signal on a first time-frequency resource of a first cell, the first downlink channel or signal being used to determine a second time-frequency resource, the second time-frequency resource being used to transmit a second downlink channel or signal and / or a third downlink channel or signal.

[0016] The communication device provided by the embodiments of the present application can be the terminal device in the above-mentioned scheme or the network device in the above-mentioned scheme, and the communication device comprises a processor and a memory. The memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to execute the wireless communication method mentioned above.

[0017] The chip provided by the embodiments of the present application is used to implement the wireless communication method mentioned above.

[0018] Specifically, the chip comprises a processor, which is used to call and run a computer program from a memory, so that the device installed with the chip executes the wireless communication method mentioned above.

[0019] The computer readable storage medium provided by the embodiments of the present application is used to store a computer program, and the computer program makes a computer execute the wireless communication method mentioned above.

[0020] The computer program product provided by the embodiments of the present application comprises computer program instructions, and the computer program instructions make a computer execute the wireless communication method mentioned above.

[0021] The computer program provided by the embodiments of the present application, when running on a computer, makes the computer execute the wireless communication method mentioned above.

[0022] In the embodiments of the present application, the second time-frequency resource can be determined according to the received first downlink channel or signal, and the second time-frequency resource is used for transmitting the second downlink channel or signal and / or the third downlink channel or signal. Through the above scheme, the network device in the energy saving state can reduce the transmission of other unnecessary common channels or signals, so as to ensure the communication performance of the terminal device and achieve the purpose of energy saving. Correspondingly, the terminal device also does not need to monitor unnecessary common channels or signals, thereby achieving the purpose of energy saving of the terminal device. BRIEF DESCRIPTION OF DRAWINGS

[0023] The accompanying drawings, which are included to provide a further understanding of the present application and are incorporated in and constitute a part of this application, illustrate embodiments of the present application and serve to explain the present application. In the drawings:

[0024] FIG. 1 is a schematic diagram of an application scenario of an embodiment of the present application;

[0025] FIG. 2 is a schematic diagram of an architecture of another communication system provided by an embodiment of the present application;

[0026] FIG. 3 is a schematic diagram of an architecture of another communication system provided by an embodiment of the present application;

[0027] FIG. 4 is an optional flowchart of a wireless communication method provided by an embodiment of the present application;

[0028] FIG. 5 is an optional structure diagram of a first downlink channel or signal provided by an embodiment of the present application;

[0029] FIG. 6 is an optional flowchart of a wireless communication method provided by an embodiment of the present application;

[0030] FIG. 7 is an optional flowchart of a wireless communication method provided by an embodiment of the present application;

[0031] FIG. 8 is an optional flowchart of a wireless communication method provided by an embodiment of the present application;

[0032] FIG. 9 is an optional flowchart of a wireless communication method provided by an embodiment of the present application;

[0033] FIG. 10 is an optional flowchart of a wireless communication method provided by an embodiment of the present application;

[0034] FIG. 11 is an optional flowchart of a wireless communication method provided by an embodiment of the present application;

[0035] FIG. 12 is an optional flowchart of a wireless communication method provided by an embodiment of the present application;

[0036] FIG. 13 is an optional flowchart of a wireless communication method provided by an embodiment of the present application;

[0037] FIG. 14 is an optional flow diagram of a wireless communication method according to an embodiment of the present application;

[0038] FIG. 15 is an optional flow diagram of a wireless communication method according to an embodiment of the present application;

[0039] FIG. 16 is an optional flow diagram of a wireless communication method according to an embodiment of the present application;

[0040] FIG. 17 is an optional flow diagram of a wireless communication method according to an embodiment of the present application;

[0041] FIG. 18 is an optional flow diagram of a wireless communication method according to an embodiment of the present application;

[0042] FIG. 19 is an optional flow diagram of a wireless communication method according to an embodiment of the present application;

[0043] FIG. 20 is an optional flow diagram of a wireless communication method according to an embodiment of the present application;

[0044] FIG. 21 is an optional flow diagram of a wireless communication method according to an embodiment of the present application;

[0045] FIG. 22 is an optional flow diagram of a wireless communication method according to an embodiment of the present application;

[0046] FIG. 23 is an optional flow diagram of a wireless communication method according to an embodiment of the present application;

[0047] FIG. 24 is an optional flow diagram of a wireless communication method according to an embodiment of the present application;

[0048] FIG. 25 is an optional structural diagram of a terminal device according to an embodiment of the present application;

[0049] FIG. 26 is an optional structural diagram of a network device according to an embodiment of the present application;

[0050] FIG. 27 is an optional structural diagram of a communication device according to an embodiment of the present application;

[0051] FIG. 28 is an optional structural diagram of a chip according to an embodiment of the present application;

[0052] FIG. 29 is an optional structural diagram of a communication system according to an embodiment of the present application. DETAILED DESCRIPTION

[0053] The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.

[0054] FIG. 1 is an optional structural diagram of a communication system according to an embodiment of the present application.

[0055] As shown in FIG. 1, the communication system 100 can include a terminal device 110 (or referred to as a communication terminal device) and a network device 120. The network device 120 can communicate with the terminal device 110 through an air interface. The terminal device 110 and the network device 120 support multi-service transmission.

[0056] It should be understood that the embodiments of the present application are only exemplarily described with 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, for example: a Long Term Evolution (LTE) system, an LTE Time Division Duplex (TDD), a Universal Mobile Telecommunication System (UMTS), an Internet of Things (IoT) system, a Narrow Band Internet of Things (NB-IoT) system, an enhanced Machine-Type Communications (eMTC) system, a 5G communication system (also referred to as a New Radio (NR) communication system), or a future communication system, etc.

[0057] In the communication system 100 shown in FIG. 1, the network device 120 can be an access network device that communicates with the terminal device 110. The access network device can provide communication coverage for a specific geographic area and can communicate with the terminal device 110 (for example, a UE) located in the coverage area.

[0058] The terminal device 110 can be any terminal device, including but not limited to a terminal device that uses a wired or wireless connection with the network device 120 or other terminal devices.

[0059] The terminal device 110 can be used for Device to Device (D2D) communication.

[0060] The wireless communication system 100 can further include a core network device 130 that communicates with the base station.

[0061] The various functional units in the communication system 100 can also establish a connection through a next generation (NG) interface to realize communication.

[0062] Fig. 1 exemplarily shows one base station, one core network device and two terminal devices. Optionally, the wireless communication system 100 can include multiple base station devices and each base station can include other number of terminal devices within its coverage, which are not limited in the embodiments of the present application.

[0063] 3GPP is studying NTN technology, which generally adopts satellite communication to provide communication services to ground users. Compared with ground cellular network communication, satellite communication has many unique advantages. First, satellite communication is not limited by the user's region. For example, general terrestrial communication cannot cover oceans, mountains, deserts and other areas where communication equipment cannot be set up or communication coverage cannot be provided due to sparse population. However, for satellite communication, since a satellite can cover a large area of the ground, and the satellite can orbit the earth, theoretically every corner of the earth can be covered by satellite communication. Second, satellite communication has great social value. Satellite communication can cover remote mountainous areas, poor countries or regions at a low cost, so that people in these areas can enjoy advanced voice communication and mobile Internet technology, which is conducive to narrowing the digital gap with developed areas and promoting the development of these areas. Third, satellite communication has a long distance, and the cost of communication does not increase significantly as the communication distance increases. Finally, satellite communication has high stability and is not limited by natural disasters.

[0064] NTN technology can be combined with various communication systems. For example, NTN technology can be combined with an NR system to form an NR-NTN system. For another example, NTN technology can be combined with an Internet of Things (IoT) system to form an IoT-NTN system. As an example, the IoT-NTN system can include an NB-IoT-NTN system and an eMTC-NTN system.

[0065] Fig. 2 is a schematic diagram of another architecture of a communication system according to an embodiment of the present application.

[0066] As shown in Fig. 2, the communication system includes a terminal device 201 and a satellite 202, and the terminal device 201 and the satellite 202 can perform wireless communication. The network formed between the terminal device 201 and the satellite 202 can also be referred to as NTN. In the architecture of the communication system shown in Fig. 2, the satellite 202 can have the function of a base station, and the terminal device 201 and the satellite 202 can directly communicate with each other. In the system architecture, the satellite 202 can be referred to as a network device. In some embodiments of the present application, the communication system can include multiple network devices 1102, and each network device 1102 can include other number of terminal devices within its coverage, which are not limited in the embodiments of the present application.

[0067] Fig. 3 is a schematic diagram of another architecture of a communication system according to an embodiment of the present application.

[0068] As shown in FIG. 3, a communication system includes a terminal device 201, a satellite 202, and a base station 203. The terminal device 201 and the satellite 202 can communicate with each other wirelessly, and the satellite 202 can communicate with the base station 203. The network formed by the terminal device 201, the satellite 202, and the base station 203 can also be referred to as an NTN. In the architecture of the communication system shown in FIG. 3, the satellite 202 can not have the function of a base station, and communication between the terminal device 201 and the base station 203 needs to be relayed by the satellite 202. In this kind of system architecture, the base station 203 can be referred to as a network device. In some embodiments of the present application, multiple base stations 203 can be included in the communication system, and each base station 203 can include other numbers of terminal devices within its coverage, which is not limited in the embodiments of the present application. The base station 203 can be the network device 120 in FIG. 1.

[0069] It should be understood that the satellite 202 described above includes but is not limited to a Low-Earth Orbit (LEO) satellite, a Medium-Earth Orbit (MEO) satellite, a Geostationary Earth Orbit (GEO) satellite, a High Elliptical Orbit (HEO) satellite, and the like. The satellite can use multiple beams to cover the ground, for example, a satellite can form dozens or even hundreds of beams to cover the ground. In other words, one satellite beam can cover a ground area with a diameter of dozens to hundreds of kilometers to ensure the coverage of the satellite and improve the system capacity of the entire satellite communication system.

[0070] In future evolved communication systems such as B5G or 6G, distributed multiple-input multiple-output (Distributed MIMO, also referred to as distributed antenna system) scenarios and / or massive multiple-input multiple-output (Massive MIMO, also referred to as massive antenna matrix system) scenarios can also be included. In some cases, Distributed MIMO and / or Massive MIMO or can also support a cell-free or UE-centric network deployment scenario. It should be understood that the above scenarios also apply to TN and / or NTN.

[0071] It can be understood that, with the development of communication technology, future evolved communication systems such as B5G or 6G can support TN or NTN, and can also support a base station-centric network deployment scenario or a terminal-centric network deployment scenario.

[0072] It should be noted that FIG. 1 to FIG. 3 only schematically show the system to which the embodiments of the present application are applied in an exemplary manner. Of course, the method shown in the embodiments of the present application can also be applied to other systems. In addition, the terms "system" and "network" are often used interchangeably in the present application. The term "and / or" in the present application is only used to describe the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B can represent the following three cases: A exists alone, A and B exist together, and B exists alone. In addition, the character " / " in the present application generally represents an "or" relationship between the front and rear associated objects. It should also be understood that the "indication" mentioned in the embodiments of the present application can be direct indication or indirect indication, and can also mean having an associated relationship. For example, A indicates B, which can mean that B can be obtained through A; or A indirectly indicates B, for example, A indicates C, and B can be obtained through C; or A and B have an associated relationship. It should also be understood that the "corresponding" mentioned in the embodiments of the present application can mean that there is a direct or indirect corresponding relationship between the two, or it can mean an associated relationship between the two, or it can mean an indication and being indicated, a configuration and being configured, and the like. It should also be understood that the "predefined" or "predefined rule" mentioned in the embodiments of the present application can be realized by pre-saving the corresponding code, table or other means that can be used to indicate related information in the device (for example, including terminal device and network device), and the specific implementation manner of the present application is not limited. For example, the predefinition can mean the definition in the protocol. It should also be understood that the "protocol" in the embodiments of the present application can mean a standard protocol in the communication field, which can include the LTE protocol, the NR protocol and the related protocol applied to the future communication system, and the present application is not limited thereto.

[0073] In order to facilitate the understanding of the technical solutions of the embodiments of the present application, the related technologies of the embodiments of the present application are described below. The following related technologies can be combined with the technical solutions of the embodiments of the present application in any manner, and all belong to the protection scope of the embodiments of the present application.

[0074] NES is of great significance to environmental sustainability, reducing the impact on the environment (reducing greenhouse gas emissions), and saving operating costs. Energy consumption has become a key part of the OPEX of operators. Most of the energy consumption comes from the wireless access network, more specifically, from the AAU, with a small share of data centers and fiber transmission. The power consumption of a wireless access can be divided into two parts: the dynamic part only includes the power consumption when data is being transmitted or received; the static part includes the power consumption necessary for the operation of maintaining the wireless access equipment at all times, including the power consumption when no data is being transmitted or received.

[0075] With the development of communication technology and the evolution of communication systems, energy consumption has gradually become an important indicator of the operation efficiency of communication systems.

[0076] In the NR system, the initial access procedure of the terminal device can be completed by detecting the synchronization signal block (Synchronization Signal / PBCH Block, SSB or SS / PBCH block) on the synchronization raster. The SSB is transmitted through the discovery signal transmission opportunity window (Discovery Burst Transmission Window) or the SSB transmission opportunity window. The discovery signal transmission opportunity window or the SSB transmission opportunity window appears periodically, and the period can be configured by the network device through a high-level parameter. In the initial access procedure, the terminal device attempts to search for the SSB through the predefined possible time-frequency position of the SSB, and obtains time and frequency synchronization, radio frame timing and cell ID through the detected SSB.

[0077] In addition to obtaining system timing information, the SSB index has another function, that is, to indicate the quasi co-location (QCL) relationship between SSBs, or it can also be understood that the SSB index can indicate the beam direction. QCL means that the large-scale parameters of the channel experienced by the symbols on one antenna port can be inferred from the channel experienced by the symbols on another antenna port. The large-scale parameters can include delay spread, average delay, Doppler spread, Doppler frequency shift, and spatial reception parameters. Specific to SSB, in the 5G NR system, different beams carrying SSBs constitute an SSB burst set, and different SSB indexes correspond to the time domain position information of different SSBs in the burst set, and also correspond to specific SSB transmission beam information. SSBs with the same SSB index are considered to have a QCL relationship; or in other words, SSBs with the same SSB index experience the same or similar large-scale parameters of the channel. The UE can assume that the network device uses the same beam to transmit these SSBs; SSBs corresponding to different SSB indexes are not considered to have a QCL relationship because they can come from different transmission beams of the network device and experience different channel transmission characteristics.

[0078] After detecting the SSB, the terminal device can determine the configuration of the Type 0- PDCCH CSS set through the Master Information Block (MIB) message in the SSB. The terminal device can receive the scheduling of the network device for the System Information Block (SIB) 1 message through listening to the Type 0-PDCCH CSS set. The MIB message and the SIB 1 message both include the system configuration information of the serving cell. Further, the terminal device can receive the scheduling of the network device for other system messages except the SIB 1 message through listening to the Type 0A-PDCCH CSS set, receive the scheduling of the network device for the paging message through listening to the Type 2-PDCCH CSS set, and receive the paging early indication (PEI) information of the paging message sent by the network device through listening to the Type 2A-PDCCH CSS set.

[0079] In the embodiments of the present application, the MIB can also be referred to as a master information block, and the SIB can also be referred to as a system information block.

[0080] The terminal device can also obtain the resource configuration of the physical random access channel (PRACH) transmission opportunity (RO) in the random access process according to the system message SIB1 of the received cell. The RO is the time-frequency resource carrying the random access preamble (Preamble, also known as PRACH). If two-step RACH transmission is supported, the resource configuration in the random access process also includes PUSCH resource configuration, also known as physical uplink shared channel (PUSCH) transmission opportunity (PO). Among them, the message A (MsgA) in the two-step RACH includes MsgA PRACH and MsgA PUSCH, the RO is the time-frequency resource for carrying MsgA PRACH, and the PO is the time-frequency resource for carrying MsgA PUSCH.

[0081] The NR system is characterized in supporting downlink multi-beam, and different SSBs are associated with different beams. Before a terminal device initiates random access, the terminal device measures and evaluates the signal quality of a cell and the signal strength of each SSB in the cell. In the case that the SSB signal detection strength exceeds a threshold, the terminal device determines the SSB with the strongest or relatively strong signal, for example, the terminal device determines SSB#1 as the SSB with the strongest signal, and then the terminal device determines, according to the mapping relationship between the SSB and the RO, that the PRACH transmission opportunity corresponding to the SSB#1 is RO#1, and sends PRACH on the RO#1. If the network device successfully receives the PRACH, the network device can know the SSB selected by the terminal device based on the resource information of the successfully received PRACH, for example, the network device can determine that the PRACH is associated with the SSB#1 according to the association relationship, and thus can determine the beam information corresponding to the subsequent communication according to the SSB#1.

[0082] In addition, the terminal device can also request the network device to send system messages according to the RO resource configured by the network device. The system messages requested by the terminal device to be sent by the network device can be other system messages except SIB1, for example, SIB2, SIB3, SIB4, SIB5, SIB6, SIB7, SIB8, SIB9, SIB10, SIB11, SIB12, SIB13, SIB14, SIB15, SIB16, SIB17, SIB18, SIB19, SIB20, SIB21, etc.

[0083] With the development of communication technology, 6G communication technology has been studied at present. Considering the importance of network energy saving, possible network energy saving schemes need to be considered at the beginning of the design of 6G communication technology. However, the energy saving of the network device will cause the communication performance of the terminal device to decline, and in the case that the network device is in the energy saving mode, how to ensure that the terminal device can camp or access in the energy saving cell to ensure the communication performance of the terminal device is a problem to be solved.

[0084] From the perspective of network energy saving, network equipment should try to reduce the transmission of "always-on" channels or signals, so as to avoid possible meaningless energy consumption. However, the transmission of "always-on" channels or signals, such as SSB, SIB, paging (Paging) and other periodic public channel or signal transmissions in the 5G network, provides more opportunities for terminal devices to access the network, and if the transmission of these channels or signals is reduced, it will lead to the performance degradation of terminal devices. Considering the compromise between the energy saving of network equipment and the communication performance of terminal devices, in the 6G network, "always-on" channels or signals can only retain the most basic channels or signals for ensuring the communication performance of terminal devices, such as SSB and Paging, and other public channels or signals can be transmitted on demand.

[0085] In order 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 with the technical solutions of the embodiments of the present application as optional schemes, which all belong to the protection scope of the embodiments of the present application. The embodiments of the present application include at least part of the following contents.

[0086] The wireless communication method provided by the embodiments of the present application, as shown in FIG. 4, is applied to a terminal device, and includes the following steps.

[0087] S401, the terminal device receives a first downlink channel or signal on a first time-frequency resource of a first cell, the first downlink channel or signal is used to determine a second time-frequency resource, and the second time-frequency resource is used to transmit a second downlink channel or signal and / or a third downlink channel or signal.

[0088] S402, the terminal device determines that the second time-frequency resource is used to transmit the second downlink channel or signal and / or the third downlink channel or signal.

[0089] In some embodiments, the first cell can be a serving cell or a searched cell of the terminal device. The terminal device receives the first downlink channel or signal on the first time-frequency resource of the first cell can be replaced by: the terminal device detects the first downlink channel or signal on the first time-frequency resource of the first cell.

[0090] In the embodiments of the present application, the second time-frequency resource can be determined according to the received first downlink channel or signal, and the second time-frequency resource is used to transmit the second downlink channel or signal and / or the third downlink channel or signal. Through the above scheme, the network equipment in the energy saving state can reduce the transmission of other unnecessary public channels or signals, so as to make the network equipment not only guarantee the communication performance of the terminal device, but also achieve the purpose of energy saving. Correspondingly, the terminal device also does not need to monitor unnecessary public channels or signals, so as to achieve the purpose of energy saving of the terminal device.

[0091] In some embodiments, the first downlink channel or signal comprises a synchronization signal.

[0092] In some embodiments, in the case that the first downlink channel or signal comprises a synchronization signal, the reception of the first downlink channel or signal by the terminal device on the first time-frequency resource of the first cell can be understood as that the terminal device receives the synchronization signal by blindly detecting the synchronization signal in the initial access procedure.

[0093] Here, the synchronization signal can be replaced by SSB or other descriptions.

[0094] In some embodiments, the first downlink channel or signal is used to carry one of the following: a master information block (MIB), a first system information block (SIB), the MIB and the first SIB.

[0095] In some embodiments, the first SIB comprises the most basic system configuration information in the first cell; and / or, the first SIB comprises paging configuration information of the first cell.

[0096] As an example, the most basic system configuration information in the first cell comprises one or more of the following: a public land mobile network (PLMN), a tracking area code (TAC), a cell identity, cell access allowed or forbidden information.

[0097] In an example, the first SIB comprises the most basic system configuration information in the first cell, wherein the most basic system configuration information in the first cell comprises paging configuration information of the first cell.

[0098] In an example, the relative position relationship between the synchronization signal and the first SIB is pre-set by a protocol. After detecting the synchronization signal, the terminal device can receive the first SIB according to the relative position relationship between the synchronization signal and the first SIB.

[0099] In an example, the first SIB is a minimum SIB, and the first downlink channel or signal is used to carry the MIB and / or the minimum SIB.

[0100] As an example, FIG. 5 shows a structural diagram of the first downlink channel or signal comprising an SSB and a minimum SIB. As shown in FIG. 5, the relative position of the SSB and the minimum SIB in the time domain is determined, and they occupy the same frequency domain unit in the frequency domain. That is, after detecting the SSB, the terminal device can receive the minimum SIB according to the structure of the SSB and the minimum SIB. The network device does not need to use DCI to schedule the reception of the minimum SIB.

[0101] In some embodiments, the first downlink channel or signal is used to acquire one or more of the following: a cell identity, system time information, downlink synchronization.

[0102] Accordingly, the terminal device is capable of acquiring one or more of the following based on the first downlink channel or signal: a cell identity, system time information, downlink synchronization.

[0103] As an example, the system time information can comprise timing of system time units, such as: radio frame timing.

[0104] In some embodiments, the terminal device is in one of the following states: idle state, inactive state, and connected state.

[0105] In some embodiments, the second downlink channel or signal is used for transmission of a paging message.

[0106] In some embodiments, the third downlink channel or signal is used for transmission of a system message.

[0107] In some embodiments, the second time-frequency resource is used for transmission of one of the following:

[0108] the second downlink channel or signal;

[0109] the third downlink channel or signal;

[0110] the second downlink channel or signal and the third downlink channel or signal.

[0111] In some embodiments, determining that the second time-frequency resource is used for transmission of the second downlink channel or signal and / or the third downlink channel or signal comprises:

[0112] determining, according to the first indication information, that the second time-frequency resource is used for transmission of the second downlink channel or signal and / or the third downlink channel or signal.

[0113] In some embodiments, the first indication information is used to indicate one of the following:

[0114] that the second time-frequency resource is used for transmission of the second downlink channel or signal;

[0115] that the second time-frequency resource is used for transmission of the third downlink channel or signal;

[0116] that the second time-frequency resource is used for transmission of the second downlink channel or signal and the third downlink channel or signal;

[0117] whether the second time-frequency resource is used for transmission of the second downlink channel or signal;

[0118] whether the second time-frequency resource is used for transmission of the third downlink channel or signal;

[0119] that the first cell is in energy saving mode or that the first cell is in an abnormal mode;

[0120] The first cell is in a non-energy saving mode or the first cell is in a normal mode.

[0121] In some embodiments, the first indication information indicates that the second time-frequency resource is used for transmission of the second downlink channel or signal and / or the third downlink channel or signal.

[0122] Exemplarily, the first indication information is used to indicate a first preset value and a second preset value, wherein the first indication information indicates that the second time-frequency resource is used for transmission of the second downlink channel or signal in a case that the first preset value is indicated; or the first indication information indicates that the second time-frequency resource is used for transmission of the third downlink channel or signal in a case that the second preset value is indicated.

[0123] Exemplarily, the first indication information is used to indicate a first preset value and a second preset value, wherein the first indication information indicates that the second time-frequency resource is used for transmission of the second downlink channel or signal in a case that the first preset value is indicated; or the first indication information indicates that the second time-frequency resource is used for transmission of the second downlink channel or signal and the third downlink channel or signal in a case that the second preset value is indicated.

[0124] Exemplarily, the first indication information is used to indicate a first preset value, a second preset value and a third preset value, wherein the first indication information indicates that the second time-frequency resource is used for transmission of the second downlink channel or signal in a case that the first preset value is indicated; or the first indication information indicates that the second time-frequency resource is used for transmission of the third downlink channel or signal in a case that the second preset value is indicated; or the first indication information indicates that the second time-frequency resource is used for transmission of the second downlink channel or signal and the third downlink channel or signal in a case that the third preset value is indicated.

[0125] In some embodiments, the first indication information indicates whether the second time-frequency resource is used for transmission of the second downlink channel or signal by configuring a parameter associated with the second downlink channel or signal.

[0126] Exemplarily, the first indication information is used to configure a first parameter, the first parameter being associated with the second downlink channel or signal. The first indication information indicates that the second time-frequency resource is used for transmission of the second downlink channel or signal in a case that the first parameter is configured or the configured first parameter is configured as “enabled” (or “true” or indicates a preset value such as “1”); or the first indication information indicates that the second time-frequency resource is not used for transmission of the second downlink channel or signal or does not indicate that the second time-frequency resource is used for transmission of the second downlink channel or signal in a case that the first parameter is not configured or the configured first parameter is configured as “disabled” (or “false” or indicates another preset value such as “0”).

[0127] In some embodiments, the first indication information indicates whether the second time-frequency resource is used for transmission of the third downlink channel or signal by configuring a parameter associated with the third downlink channel or signal.

[0128] Exemplarily, the first indication information is used to configure a second parameter, the second parameter being associated with the third downlink channel or signal. The first indication information indicates that the second time-frequency resource is used for transmission of the third downlink channel or signal in a case that the second parameter is configured or the configured second parameter is configured as “enabled” (or “true” or indicates a preset value such as “1”); or the first indication information indicates that the second time-frequency resource is not used for transmission of the third downlink channel or signal or does not indicate that the second time-frequency resource is used for transmission of the third downlink channel or signal in a case that the second parameter is not configured or the configured second parameter is configured as “disabled” (or “false” or indicates another preset value such as “0”).

[0129] Exemplarily, the first indication information is used to configure a first parameter and a second parameter, the first parameter being associated with the second downlink channel or signal and the second parameter being associated with the third downlink channel or signal. The first indication information indicates that the second time-frequency resource is used for transmission of the second downlink channel or signal and the third downlink channel or signal in a case that the first parameter and the second parameter are configured or the configured first parameter and the second parameter are configured as “enabled” (or “true” or indicates a preset value such as “1”).

[0130] In some embodiments, whether the second downlink channel or signal is used for transmission is indicated based on different values of the first indication information or whether the first indication information exists.

[0131] Exemplarily, the first indication information indicates that the second time-frequency resource is used for transmission of the second downlink channel or signal in a case that the first indication information indicates a preset value such as “1” or the first indication information exists; or the first indication information indicates that the second time-frequency resource is not used for transmission of the second downlink channel or signal or does not indicate that the second time-frequency resource is used for transmission of the second downlink channel or signal in a case that the first indication information indicates another preset value such as “0” or the first indication information does not exist.

[0132] In some embodiments, whether the third downlink channel or signal is used for transmission is indicated based on different values of the first indication information or whether the first indication information exists.

[0133] Exemplarily, the first indication information indicates that the second time-frequency resource is used for transmission of the third downlink channel or signal in a case that the first indication information indicates a preset value such as “1” or the first indication information exists; or the first indication information indicates that the second time-frequency resource is not used for transmission of the third downlink channel or signal or does not indicate that the second time-frequency resource is used for transmission of the third downlink channel or signal in a case that the first indication information indicates another preset value such as “0” or the first indication information does not exist.

[0134] In some embodiments, the second time-frequency resource is used for transmission of the second downlink channel or signal in a case that the first indication information indicates that the second time-frequency resource is used for transmission of the second downlink channel or signal.

[0135] In some embodiments, the second time-frequency resource is used for transmission of the third downlink channel or signal in a case that the first indication information indicates that the second time-frequency resource is used for transmission of the third downlink channel or signal.

[0136] In some embodiments, the second time-frequency resource is used for transmission of the second downlink channel or signal and the third downlink channel or signal in a case that the first indication information indicates that the second time-frequency resource is used for transmission of the second downlink channel or signal and the third downlink channel or signal.

[0137] In some embodiments, the first indication information indicates an operation mode in which the first cell is located. Here, the operation mode in which the first cell is located can be understood as an operation mode of the network device. Exemplarily, the operation mode of the network device includes but is not limited to the following two modes: an energy saving mode and a normal mode, wherein the energy saving mode can also be referred to as an abnormal mode, and the normal mode can also be referred to as a non-energy saving mode.

[0138] In some embodiments, the second time-frequency resource is used for transmission of the second downlink channel or signal and / or the second time-frequency resource is not used for transmission of the third downlink channel or signal in a case that the operation mode in which the first cell is located is the energy saving mode.

[0139] Exemplarily, the second downlink channel or signal is used for transmission of a paging message, and the third downlink channel or signal is used for transmission of a system message. In a case that the operation mode in which the first cell is located is the energy saving mode, the second time-frequency resource is used for transmission of the paging message and / or the second time-frequency resource is not used for transmission of the system message.

[0140] That is, in a case that the operation mode in which the first cell is located is the energy saving mode, the network device can transmit necessary paging messages to ensure that the terminal device can be called by the network in time, and reduce transmission of system messages to achieve the purpose of energy saving.

[0141] In some embodiments, the second time-frequency resource is used for transmission of the second downlink channel or signal and / or the second time-frequency resource is used for transmission of the third downlink channel or signal in a case that the operation mode in which the first cell is located is the normal mode.

[0142] Exemplarily, the second downlink channel or signal is used for transmission of a paging message, and the third downlink channel or signal is used for transmission of a system message. In a case that the operation mode in which the first cell is located is the normal mode, the second time-frequency resource is used for transmission of the paging message and / or the second time-frequency resource is used for transmission of the system message.

[0143] That is, in a case where the working mode of the first cell is the normal mode, the network device can transmit necessary paging messages to ensure that the terminal device can be called by the network in time, and the network device can transmit system messages to ensure the communication performance of the terminal device accessing the network and to meet the needs of the terminal device camping in the first cell.

[0144] In some embodiments, the energy saving mode indicates that the second time-frequency resource is not used for transmission of the third downlink channel or signal, and the normal mode indicates that the second time-frequency resource can be used for transmission of the third downlink channel or signal. In some embodiments, the second time-frequency resource being used for transmission of the third downlink channel or signal includes that the second time-frequency resource is used for transmission of the third downlink channel or signal, or the second time-frequency resource is used for the second downlink channel or signal and the third downlink channel or signal.

[0145] In some embodiments, in a case where the first indication information indicates that the first cell is in the energy saving mode or the first cell is in the non-normal mode, the second time-frequency resource is used for transmission of the second downlink channel or signal.

[0146] In some embodiments, in a case where the first indication information indicates that the first cell is in the non-energy saving mode or the first cell is in the normal mode, the second time-frequency resource is used for transmission of the third downlink channel or signal.

[0147] In some embodiments, in a case where the first indication information indicates that the first cell is in the non-energy saving mode or the first cell is in the normal mode, the second time-frequency resource is used for transmission of the second downlink channel or signal and the third downlink channel or signal.

[0148] In some embodiments, the first indication information indicates that the working mode of the first cell is the energy saving mode or the normal mode. If the first indication information indicates that the first cell is in the energy saving mode, it indicates that the second time-frequency resource is not used for transmission of the third downlink channel or signal, i.e., the second time-frequency resource is used for transmission of the second downlink channel or signal. If the first indication information indicates that the first cell is in the normal mode, it indicates that the second time-frequency resource can be used for transmission of the third downlink channel or signal, at this time, the second time-frequency resource is used for transmission of the third downlink channel or signal, or the second time-frequency resource can be used for transmission of the second downlink channel or signal and the third downlink channel or signal.

[0149] Exemplarily, in a case where the working mode of the first cell is the energy saving mode, the second time-frequency resource is used for transmission of the second downlink channel or signal, and the second downlink channel or signal is used for transmission of the paging message.

[0150] Exemplarily, in a case where the working mode of the first cell is the normal mode, the second time-frequency resource is used for transmission of a third downlink channel or signal, and the third downlink channel or signal is used for transmission of a system message.

[0151] Exemplarily, in a case where the working mode of the first cell is the normal mode, the second time-frequency resource is used for transmission of a second downlink channel or signal and a third downlink channel or signal, the second downlink channel or signal is used for transmission of a paging message, and the third downlink channel or signal is used for transmission of a system message.

[0152] In some embodiments, the second time-frequency resource is used for transmission of the second downlink channel or signal; and determining, according to the first indication information, that the second time-frequency resource is used for transmission of the second downlink channel or signal and / or the third downlink channel or signal comprises:

[0153] in a case where the first indication information indicates that the second time-frequency resource is used for transmission of the third downlink channel or signal, determining that the second time-frequency resource is used for transmission of the second downlink channel or signal and the third downlink channel or signal; or,

[0154] in a case where the first indication information does not indicate that the second time-frequency resource is used for transmission of the third downlink channel or signal or there is no first indication information, determining that the second time-frequency resource is used for transmission of the second downlink channel or signal.

[0155] That is, the second time-frequency resource is used for transmission of the second downlink channel or signal, which can be understood as that the second time-frequency resource is always used for transmission of the second downlink channel or signal. The first indication information is used for indicating whether the second time-frequency resource is used for transmission of the third downlink channel or signal. In a case where the first indication information indicates that the second time-frequency resource is used for transmission of the third downlink channel or signal, the second time-frequency resource is used for transmission of the second downlink channel and the third downlink channel. In a case where the first indication information does not indicate that the second time-frequency resource is used for transmission of the third downlink channel or signal or there is no first indication information, the second time-frequency resource is used for transmission of the second downlink channel or signal.

[0156] In some embodiments, the second time-frequency resource is used for transmission of the third downlink channel or signal; and determining, according to the first indication information, that the second time-frequency resource is used for transmission of the second downlink channel or signal and / or the third downlink channel or signal comprises:

[0157] in a case where the first indication information indicates that the second time-frequency resource is used for transmission of the second downlink channel or signal, determining that the second time-frequency resource is used for transmission of the second downlink channel or signal and the third downlink channel or signal; or,

[0158] In a case that the first indication information does not indicate that the second time-frequency resource is used for transmission of the second downlink channel or signal or there is no first indication information, it is determined that the second time-frequency resource is used for transmission of the third downlink channel or signal.

[0159] That is, the second time-frequency resource is used for transmission of the third downlink channel or signal can be understood as that the second time-frequency resource is always used for transmission of the third downlink channel or signal. The first indication information is used for indicating whether the second time-frequency resource is used for transmission of the second downlink channel or signal. In a case that the first indication information indicates that the second time-frequency resource is used for transmission of the second downlink channel or signal, the second time-frequency resource is used for transmission of the second downlink channel and the third downlink channel. In a case that the first indication information does not indicate that the second time-frequency resource is used for transmission of the second downlink channel or signal or there is no first indication information, the second time-frequency resource is used for transmission of the third downlink channel or signal.

[0160] In some embodiments, the first downlink channel or signal is used for carrying the first indication information.

[0161] In some embodiments, the second downlink channel or signal or the third downlink channel or signal is used for carrying the first indication information.

[0162] In some embodiments, in a case that the second downlink channel or signal or the third downlink channel or signal is used for carrying the first indication information, determining, according to the first indication information, that the second time-frequency resource is used for transmission of the second downlink channel or signal and / or the third downlink channel or signal comprises:

[0163] In a case that the first indication information carried in the downlink channel or signal transmitted on the second time-frequency resource indicates a first value, it is determined that the second time-frequency resource is used for transmission of the second downlink channel or signal; or,

[0164] In a case that the first indication information carried in the downlink channel or signal transmitted on the second time-frequency resource indicates a second value, it is determined that the second time-frequency resource is used for transmission of the third downlink channel or signal.

[0165] Exemplarily, the downlink channel or signal transmitted on the second time-frequency resource is a downlink control channel, and the downlink control information carried on the downlink control channel comprises the first indication information. In a case that the first indication information indicates the first value, the downlink control channel is considered as the second downlink channel or signal; or, in a case that the first indication information indicates the second value, the downlink control channel is considered as the third downlink channel or signal.

[0166] Exemplarily, the second downlink channel or signal is used for transmitting a paging message, and the third downlink channel or signal is used for transmitting a system message. The downlink channel or signal transmitted on the second time-frequency resource is a downlink control channel, and the first indication information is included in downlink control information carried on the downlink control channel. In a case where the first indication information indicates a first value, for example, 1, the downlink control information is used for scheduling a downlink shared channel carrying the paging message; or in a case where the first indication information indicates a second value, for example, 0, the downlink control information is used for scheduling a downlink shared channel carrying the system message.

[0167] In some embodiments, the first downlink channel or signal corresponds to first scrambling code information or second scrambling code information, and determining that the second time-frequency resource is used for transmitting the second downlink channel or signal and / or the third downlink channel or signal comprises:

[0168] In a case where the first downlink channel or signal is detected according to the first scrambling code information, it is determined that the second time-frequency resource is used for transmitting the second downlink channel or signal; or

[0169] In a case where the first downlink channel or signal is detected according to the second scrambling code information, it is determined that the second time-frequency resource is used for transmitting the third downlink channel or signal.

[0170] Exemplarily, the first scrambling code information corresponds to the second downlink channel or signal, and the second scrambling code information corresponds to the third downlink channel or signal. The first downlink channel or signal can be scrambled using the first scrambling code information or scrambled using the second scrambling code information. Correspondingly, the terminal device can detect the first downlink channel or signal using the first scrambling code information or the second scrambling code information. In a case where the first downlink channel or signal is detected according to the first scrambling code information, the terminal device can determine that the second time-frequency resource is used for transmitting the second downlink channel or signal. In a case where the first downlink channel or signal is detected according to the second scrambling code information, the terminal device can determine that the second time-frequency resource is used for transmitting the third downlink channel or signal.

[0171] Exemplarily, the first downlink channel or signal is an SSB, the first scrambling code information is a first SSB index, and the second scrambling code information is a second SSB index. In a case where the terminal device detects an SSB corresponding to the first SSB index, it can be determined that the second time-frequency resource is used for transmitting the second downlink channel or signal. In a case where the terminal device detects an SSB corresponding to the second SSB index, it can be determined that the second time-frequency resource is used for transmitting the third downlink channel or signal.

[0172] In some embodiments, the scrambling information corresponding to the downlink channel or signal transmitted on the second time-frequency resource comprises first scrambling information or second scrambling information, wherein the second downlink channel or signal corresponds to the first scrambling information, and the third downlink channel or signal corresponds to the second scrambling information, and the determining that the second time-frequency resource is used for transmitting the second downlink channel or signal and / or the third downlink channel or signal comprises:

[0173] In a case where the downlink channel or signal transmitted on the second time-frequency resource is detected according to the first scrambling information, it is determined that the second time-frequency resource is used for transmitting the second downlink channel or signal; or,

[0174] In a case where the downlink channel or signal transmitted on the second time-frequency resource is detected according to the second scrambling information, it is determined that the second time-frequency resource is used for transmitting the third downlink channel or signal.

[0175] Exemplarily, the first scrambling information corresponds to the second downlink channel or signal, and the second scrambling information corresponds to the third downlink channel or signal. The downlink channel or signal transmitted on the second time-frequency resource can be scrambled using the first scrambling information or scrambled using the second scrambling information. Accordingly, the terminal device can detect the downlink channel or signal transmitted on the second time-frequency resource using the first scrambling information or the second scrambling information. In a case where the downlink channel or signal transmitted on the second time-frequency resource is detected according to the first scrambling information, the terminal device can determine that the second time-frequency resource is used for transmitting the second downlink channel or signal. In a case where the downlink channel or signal transmitted on the second time-frequency resource is detected according to the second scrambling information, the terminal device can determine that the second time-frequency resource is used for transmitting the third downlink channel or signal.

[0176] In some embodiments, the first scrambling information is preset or is scrambling information configured through the first downlink channel or signal.

[0177] In some embodiments, the second scrambling information is preset or is scrambling information configured through the first downlink channel or signal.

[0178] In some embodiments, the scrambling information can be a scrambling identifier or a sequence identifier used for the transmission of the second downlink channel or signal. For example, when the downlink channel or signal transmitted on the second time-frequency resource is used to carry DCI, the scrambling information is a radio network temporary identifier (RNTI) corresponding to the transmission of the DCI.

[0179] Exemplarily, the downlink channel or signal transmitted on the second time-frequency resource is a downlink control channel, the first scrambling code information is a first RNTI, and the second scrambling code information is a second RNTI. In a case where the terminal device detects the downlink control channel scrambled by the first RNTI on the second time-frequency resource, it can be determined that the second time-frequency resource is used for transmission of the second downlink channel or signal. In a case where the terminal device detects the downlink control channel scrambled by the second RNTI on the second time-frequency resource, it can be determined that the second time-frequency resource is used for transmission of the third downlink channel or signal.

[0180] In some embodiments, the first scrambling code information is a paging RNTI (P-RNTI) or a PEI-RNTI. Exemplarily, the second downlink channel or signal is used for transmission of a paging message, and the first scrambling code information is the P-RNTI. Exemplarily, the second downlink channel or signal is used for transmission of a paging message, and the first scrambling code information is the PEI-RNTI.

[0181] In some embodiments, the second scrambling code information is an SI-RNTI. Exemplarily, the third downlink channel or signal is used for transmission of a system message, and the first scrambling code information is the SI-RNTI.

[0182] In some embodiments, the corresponding search space set on the second time-frequency resource includes a first search space set and / or a second search space set, wherein the second downlink channel or signal corresponds to the first search space set, the third downlink channel or signal corresponds to the second search space set, and the determination that the second time-frequency resource is used for transmission of the second downlink channel or signal and / or the third downlink channel or signal includes:

[0183] In a case where the second time-frequency resource corresponds to the first search space set, it is determined that the second time-frequency resource is used for transmission of the second downlink channel or signal; or,

[0184] In a case where the second time-frequency resource corresponds to the second search space set, it is determined that the second time-frequency resource is used for transmission of the third downlink channel or signal.

[0185] Exemplarily, the second downlink channel or signal is used for transmission of a paging message, and the second time-frequency resource is a time-frequency resource corresponding to the first search space set. If the terminal device detects a downlink control channel within the first search space set, the downlink control channel is used for scheduling of paging message transmission.

[0186] Exemplarily, the third downlink channel or signal is used for transmission of a system message, and the second time-frequency resource is a time-frequency resource corresponding to the second search space set. If the terminal device detects a downlink control channel within the second search space set, the downlink control channel is used for scheduling of system message transmission.

[0187] In some embodiments, the method further comprises:

[0188] The terminal device monitors or receives the second downlink channel or signal on the second time-frequency resource; and / or, the terminal device monitors or receives the third downlink channel or signal on the second time-frequency resource.

[0189] In some embodiments, the second downlink channel or signal is used for transmitting a paging message, comprising:

[0190] The second downlink channel or signal is used for carrying a first downlink control information (DCI), the first DCI is used for scheduling transmission of the paging message; or,

[0191] The second downlink channel or signal is used for carrying a second DCI, the second DCI is used for indicating whether to receive the paging message; or,

[0192] The second downlink channel or signal is used for carrying the paging message.

[0193] That is, the second downlink channel or signal used for transmitting a paging message can include two cases:

[0194] Case A1: The second downlink channel or signal includes a downlink control channel, and the second downlink channel or signal carries a first DCI or a second DCI. In the case that the second downlink channel or signal carries the first DCI, the first DCI is used for scheduling transmission of the paging message, for example, scheduling a downlink shared channel carrying the paging message. In the case that the second downlink channel or signal carries the second DCI, the second DCI is used for indicating whether to receive the paging message, i.e., the terminal device determines whether to monitor the first DCI based on the second DCI, and the first DCI is used for scheduling transmission of the paging message, for example, scheduling a downlink shared channel carrying the paging message.

[0195] Case A2: The second downlink channel or signal includes a downlink shared channel, and the second downlink channel or signal carries the paging message.

[0196] In some embodiments, in the case that the second downlink channel or signal carries the first DCI used for scheduling transmission of the paging message, after the terminal device receives the first DCI on the second time-frequency resource, the terminal device receives the paging message based on the scheduling of the first DCI.

[0197] In some embodiments, the time-frequency resource used for transmitting the first DCI can be referred to as a paging occasion (PO).

[0198] Exemplarily, if the second downlink channel or signal is used to carry the first DCI, the second time-frequency resource used to transmit the second downlink channel or signal can be referred to as a PO. Accordingly, the terminal device listening to or receiving the second downlink channel or signal on the second time-frequency resource can be replaced with the terminal device listening to the first DCI on the PO.

[0199] In an example, as shown in FIG. 6, the terminal device receives a first downlink channel or signal, the first downlink channel or signal being used to determine a location of a PO, the PO being used to transmit the first DCI. The terminal device listens to the first DCI on the PO, and after receiving the first DCI transmitted on the PO, receives a first PDSCH carrying a paging message according to a scheduling of the first DCI.

[0200] In some embodiments, in a case where the second downlink channel or signal carries a second DCI used to indicate whether to receive a paging message, after the terminal device receives the second DCI on the second time-frequency resource, the terminal device determines whether to receive the paging message based on the second DCI.

[0201] In some embodiments, the time-frequency resource used to transmit the second DCI can be referred to as a paging early indication transmission occasion (PEI-O).

[0202] Exemplarily, if the second downlink channel or signal is used to carry the second DCI, the second time-frequency resource used to transmit the second downlink channel or signal can be referred to as a PEI-O. Accordingly, the terminal device listening to or receiving the second downlink channel or signal on the second time-frequency resource can be replaced with the terminal device listening to the second DCI on the PEI-O.

[0203] In an example, as shown in FIG. 7, the terminal device receives a first downlink channel or signal, the first downlink channel or signal being used to determine a location of a PEI-O, the PEI-O being used to transmit the second DCI. The terminal device listens to the second DCI on the PEI-O, and after receiving the second DCI transmitted on the PEI-O, determines whether to listen to the first DCI on the PO according to the second DCI.

[0204] In some embodiments, in a case where the second downlink channel or signal is used to carry a paging message, the terminal device receives a first PDSCH carrying the paging message on the second time-frequency resource, or in other words, the second downlink channel or signal includes the first PDSCH.

[0205] Exemplarily, the second downlink channel or signal is a PDSCH for carrying a paging message. The terminal device receives the first PDSCH carrying the paging message on the second time-frequency resource in a case that the terminal device determines that the second time-frequency resource is used for transmission of the second downlink channel or signal.

[0206] In an example, as shown in FIG. 8, the terminal device receives a first downlink channel or signal, the first downlink channel or signal being used for determining a location of a second time-frequency resource. The terminal device receives the first PDSCH carrying the paging message on the second time-frequency resource in a case that the terminal device determines that the second time-frequency resource is used for transmission of a second downlink channel or signal, the second downlink channel or signal being a PDSCH for carrying a paging message.

[0207] In some embodiments, in a case that the second downlink channel or signal is used for carrying the second DCI, the method further comprises one or more of:

[0208] listening for a first DCI on a third time-frequency resource in a case that the second DCI is received on the second time-frequency resource and the second DCI indicates receiving the paging message;

[0209] not listening for the first DCI on the third time-frequency resource in a case that the second DCI is received on the second time-frequency resource and the second DCI indicates not receiving the paging message or the second DCI does not indicate receiving the paging message;

[0210] not listening for the first DCI on the third time-frequency resource in a case that the second DCI is not received on the second time-frequency resource;

[0211] wherein the first DCI is used for scheduling transmission of the paging message.

[0212] As mentioned before, in some embodiments, the time-frequency resource used for transmission of the second DCI can be referred to as PEI-O, and the time-frequency resource used for transmission of the first DCI can be referred to as PO. That is, the second time-frequency resource can be referred to as PEI-O, and the third time-frequency resource can be referred to as PO.

[0213] Exemplarily, the second downlink channel or signal is used to carry the second DCI, and the terminal device monitors the second downlink channel or signal (i.e., the second DCI) on the second time-frequency resource (i.e., PEI-O). If the terminal device receives the second DCI on the PEI-O and the second DCI indicates to receive the paging message, the terminal device monitors the first DCI on the third time-frequency resource (i.e., PO). Further, if the terminal device receives the first DCI on the PO, the terminal device receives the first PDSCH carrying the paging message according to the scheduling of the first DCI. Alternatively, if the terminal device receives the second DCI on the PEI-O and the second DCI indicates not to receive the paging message or the second DCI does not indicate to receive the paging message, the terminal device does not monitor the first DCI on the PO. Alternatively, if the terminal device does not receive the second DCI on the PEI-O, the terminal device does not monitor the first DCI on the PO.

[0214] In some embodiments, in the case that the second downlink channel or signal is used to carry the second DCI, the method further comprises: in the case that the second DCI is not received on the second time-frequency resource, monitoring the first DCI on the third time-frequency resource; wherein the first DCI is used to schedule the transmission of the paging message.

[0215] That is, in this case, if the terminal device does not receive the second DCI, its default behavior is to monitor the first DCI on the third time-frequency resource. The advantage of this implementation is that in the case that the base station transmits the second DCI but the terminal device does not receive the second DCI, the terminal device can still receive the first DCI, thereby improving the performance of communication.

[0216] In an example, as shown in FIG. 7 or FIG. 9, the terminal device receives the first downlink channel or signal and determines the location of the second time-frequency resource (i.e., PEI-O) based on the first downlink channel or signal, the PEI-O being used to transmit the second DCI. The terminal device monitors the second DCI on the PEI-O. Understandably, in some cases, after determining the PEI-O, the terminal device can no longer need to receive the first downlink channel or signal, but monitor the second DCI on the PEI-O. The second DCI is used to indicate whether to receive the paging message. In the case that the second DCI indicates to receive the paging message, as shown in FIG. 9, the terminal device monitors the first DCI on the third time-frequency resource (i.e., PO), and receives the first PDSCH according to the scheduling of the first DCI, and judges whether the first PDSCH carries the paging message of the terminal device after receiving the first PDSCH. Alternatively, in the case that the second DCI does not indicate to receive the paging message, as shown in FIG. 7, the terminal device does not monitor the first DCI on the PO.

[0217] In some embodiments, the third time-frequency resource is determined according to second indication information; wherein the second indication information is carried in the first downlink channel or signal, or the second indication information is carried in the second downlink channel or signal.

[0218] In some embodiments, the terminal device determines the third time-frequency resource according to second indication information.

[0219] In some embodiments, the second indication information is used to indicate one or more of the following information:

[0220] a time domain position of the third time-frequency resource;

[0221] a frequency domain position of the third time-frequency resource;

[0222] a period of the third time-frequency resource;

[0223] an offset of the third time-frequency resource relative to the first time-frequency resource;

[0224] a number of time domain units included in the third time-frequency resource;

[0225] a number of frequency domain units included in the third time-frequency resource.

[0226] In some embodiments, the number of time domain units included in the third time-frequency resource can be understood as the number of time domain units included in the third time-frequency resource in the time domain.

[0227] In the embodiments of the present application, the time domain unit can include one of the following: frame, subframe, time slot, symbol, etc.

[0228] In some embodiments, the number of frequency domain units included in the third time-frequency resource can be understood as the number of frequency domain units included in the third time-frequency resource in the frequency domain.

[0229] In the embodiments of the present application, the frequency domain unit can include one of the following: resource element (RE), physical resource block (PRB), RE group, PRB group, etc. It can be understood that a RE group includes a plurality of REs. A PRB group includes a plurality of PRBs.

[0230] In some embodiments, the first DCI is also used to indicate whether to receive the system message; or the second DCI is also used to indicate whether to receive the system message.

[0231] In some embodiments, the first DCI is further configured to indicate whether to receive the system message, or the second DCI is further configured to indicate whether to receive the system message, which can be replaced by: the first DCI is further configured to indicate to receive the system message, or the second DCI is further configured to indicate to receive the system message.

[0232] In some embodiments, the first DCI is further configured to indicate whether to receive the system message, or the second DCI is further configured to indicate whether to receive the system message, which can be replaced by: the first DCI is further configured to indicate system message update, or the second DCI is further configured to indicate system message update.

[0233] That is, the network device can use the first DCI or the second DCI to initiate the notification of the system message update to the terminal device.

[0234] Exemplarily, the indication information included in the first DCI is further configured to indicate system message update, or the indication information included in the second DCI is further configured to indicate system message update.

[0235] Exemplarily, the second downlink channel or signal is used to carry the first DCI, and the terminal device listens to the second downlink channel or signal (i.e., the first DCI) on the second time-frequency resource. If the terminal device receives the first DCI on the second time-frequency resource, the behavior of the terminal device includes at least one of the following:

[0236] If the first DCI indicates system message update, the terminal device listens to the third DCI scheduling system message transmission;

[0237] If the first DCI indicates to receive a paging message, the terminal device receives the first PDSCH carrying the paging message.

[0238] In an example, as shown in FIG. 10, the terminal device receives a first downlink channel or signal, which is used to determine the location of a second time-frequency resource (i.e., a PO), and the PO is used to transmit the first DCI. The terminal device listens to the first DCI on the PO, and after receiving the first DCI transmitted on the PO, if the first DCI indicates system message update, the terminal device listens to the third DCI scheduling system message transmission; and / or, if the first DCI indicates to receive a paging message, the terminal device receives the first PDSCH carrying the paging message.

[0239] Exemplarily, the second downlink channel or signal is used to carry the second DCI, and the terminal device listens to the second downlink channel or signal (i.e., the second DCI) on the second time-frequency resource. If the terminal device receives the second DCI on the second time-frequency resource, the behavior of the terminal device includes at least one of the following:

[0240] If the second DCI indicates a system message update, the terminal device monitors a third DCI scheduling transmission of the system message.

[0241] If the second DCI indicates receiving a paging message, the terminal device monitors a first DCI scheduling transmission of the paging message.

[0242] If the second DCI does not indicate receiving a paging message or indicates not receiving a paging message, the terminal device does not monitor the first DCI scheduling transmission of the paging message.

[0243] In an example, as shown in FIG. 11, the terminal device receives a first downlink channel or signal, and determines a location of a second time-frequency resource (i.e., PEI-O) based on the first downlink channel or signal, the PEI-O being used for transmission of the second DCI. The terminal device monitors the second DCI on the PEI-O. Understandably, in some cases, after determining the PEI-O, the terminal device can no longer need to receive the first downlink channel or signal, but monitor the second DCI on the PEI-O. The second DCI is used to indicate whether to receive a paging message and / or whether a system message is updated. In the case where the second DCI indicates a system message update, the terminal device monitors a third DCI scheduling transmission of the system message; and / or, in the case where the second DCI indicates receiving a paging message, the terminal device monitors a first DCI on a third time-frequency resource (i.e., PO), and receives a first PDSCH carrying the paging message according to scheduling of the first DCI.

[0244] In the embodiments of the present application, a system message update can be indicated by the first DCI scheduling transmission of the paging message or the second DCI indicating whether to receive the paging message, so as to achieve control of receiving the paging message and the system message using one DCI, reduce signaling overhead, and reduce implementation complexity of the terminal device.

[0245] In some embodiments, in the case where the first DCI or the second DCI indicates receiving the system message, the method further includes:

[0246] monitoring a third DCI, wherein the third DCI is used to schedule transmission of the system message.

[0247] In some embodiments, in the case where the first DCI or the second DCI indicates not receiving the system message or does not indicate receiving the system message, monitoring of the third DCI is not performed.

[0248] In some embodiments, the third downlink channel or signal is used to transmit the system message, including:

[0249] The third downlink channel or signal is used to carry a third DCI, the third DCI being used to schedule transmission of the system message; or,

[0250] The third downlink channel or signal is used to carry a fourth DCI, and the fourth DCI is used to indicate whether to receive the system message; or

[0251] The third downlink channel or signal is used to carry the system message.

[0252] That is, the third downlink channel or signal used to transmit the system message can include two cases:

[0253] Case B1: The third downlink channel or signal includes a downlink control channel, and the third downlink channel or signal carries a third DCI or a fourth DCI. In the case where the third downlink channel or signal carries the third DCI, the third DCI is used to schedule the transmission of the system message, for example, to schedule a downlink shared channel carrying the system message. In the case where the third downlink channel or signal carries the fourth DCI, the fourth DCI is used to indicate whether to receive the system message, i.e., the terminal device determines whether to monitor the third DCI based on the fourth DCI, and the third DCI is used to schedule the transmission of the system message, for example, to schedule a downlink shared channel carrying the system message.

[0254] Case B2: The third downlink channel or signal includes a downlink shared channel, and the third downlink channel or signal carries the system message.

[0255] In some embodiments, in the case where the third downlink channel or signal carries the third DCI used to schedule the transmission of the system message, the terminal device receives the third DCI on the second time-frequency resource, and then receives the system message based on the scheduling of the third DCI.

[0256] In an example, as shown in FIG. 12, the terminal device receives a first downlink channel or signal used to determine the location of a second time-frequency resource, and the second time-frequency resource is used to transmit the third DCI. The terminal device monitors the third DCI on the second time-frequency resource, and after receiving the third DCI transmitted on the second time-frequency resource, receives a second PDSCH carrying the system message according to the scheduling of the third DCI.

[0257] In some embodiments, in the case where the third downlink channel or signal carries the fourth DCI used to indicate whether to receive the system message, the terminal device receives the fourth DCI on the second time-frequency resource, and then determines whether to receive the system message based on the fourth DCI.

[0258] In an example, as shown in FIG. 13, the terminal device receives a first downlink channel or signal used to determine the location of a second time-frequency resource, and the second time-frequency resource is used to transmit the fourth DCI. The terminal device monitors the fourth DCI on the second time-frequency resource, and after receiving the fourth DCI transmitted on the second time-frequency resource, determines whether to monitor the third DCI on a fourth time-frequency resource according to the fourth DCI.

[0259] In some embodiments, in a case that the third downlink channel or signal is for carrying the system message, the terminal device receives the second PDSCH carrying the system message on the second time-frequency resource. In other words, the third downlink channel or signal comprises the second PDSCH.

[0260] Exemplarily, the third downlink channel or signal is a PDSCH for carrying the system message. In a case that the terminal device determines that the second time-frequency resource is for transmitting the third downlink channel or signal, the terminal device receives the second PDSCH carrying the system message on the second time-frequency resource.

[0261] In an example, as shown in FIG. 14, the terminal device receives a first downlink channel or signal for determining a location of a second time-frequency resource. In a case that the terminal device determines that the second time-frequency resource is for transmitting a third downlink channel or signal, the third downlink channel or signal being a PDSCH for carrying a system message, the terminal device receives the second PDSCH carrying the system message on the second time-frequency resource.

[0262] In some embodiments, in a case that the third downlink channel or signal is for carrying the fourth DCI, the method further comprises one or more of:

[0263] listening for a third DCI on a fourth time-frequency resource in a case that the fourth DCI is received on the second time-frequency resource and the fourth DCI indicates receiving the system message;

[0264] not listening for the third DCI on the fourth time-frequency resource in a case that the fourth DCI is received on the second time-frequency resource and the fourth DCI indicates not receiving the system message or the fourth DCI does not indicate receiving the system message;

[0265] not listening for the third DCI on the fourth time-frequency resource in a case that the fourth DCI is not received on the second time-frequency resource;

[0266] wherein the third DCI is for scheduling transmission of the system message.

[0267] Exemplarily, the third downlink channel or signal is used to carry the fourth DCI, and the terminal device monitors the third downlink channel or signal (i.e. the fourth DCI) on the second time-frequency resource. If the terminal device receives the fourth DCI on the second time-frequency resource and the fourth DCI indicates receiving the system message, the terminal device monitors the third DCI on the fourth time-frequency resource. Further, if the terminal device receives the third DCI on the fourth time-frequency resource, the terminal device receives the second PDSCH carrying the system message according to the scheduling of the third DCI. Alternatively, if the terminal device receives the fourth DCI on the second time-frequency resource and the fourth DCI indicates not receiving the system message or the fourth DCI does not indicate receiving the system message, the terminal device does not monitor the third DCI on the fourth time-frequency resource. Alternatively, if the terminal device does not receive the fourth DCI on the second time-frequency resource, the terminal device does not monitor the third DCI on the fourth time-frequency resource.

[0268] In some embodiments, in the case that the third downlink channel or signal is used to carry the fourth DCI, the method further comprises: in the case that the fourth DCI is not received on the second time-frequency resource, monitoring the third DCI on the fourth time-frequency resource; wherein the third DCI is used to schedule the transmission of the system message.

[0269] That is, in this case, if the terminal device does not receive the fourth DCI, its default behavior is to monitor the third DCI on the fourth time-frequency resource. The advantage of this implementation is that in the case that the base station transmits the fourth DCI but the terminal device does not receive the fourth DCI, the terminal device can still receive the third DCI, thereby improving the performance of communication.

[0270] In an example, as shown in FIG. 13 or FIG. 15, the terminal device receives the first downlink channel or signal and determines the location of the second time-frequency resource based on the first downlink channel or signal, the second time-frequency resource being used to transmit the fourth DCI. The terminal device monitors the fourth DCI on the second time-frequency resource. Understandably, in some cases, after determining the second time-frequency resource, the terminal device can no longer need to receive the first downlink channel or signal, but monitor the fourth DCI on the second time-frequency resource. The fourth DCI is used to indicate whether to receive the system message. In the case that the fourth DCI indicates receiving the system message, as shown in FIG. 15, the terminal device monitors the third DCI on the fourth time-frequency resource and receives the second PDSCH carrying the system message according to the scheduling of the third DCI. Alternatively, in the case that the fourth DCI does not indicate receiving the system message, as shown in FIG. 13, the terminal device does not monitor the third DCI on the fourth time-frequency resource.

[0271] In some embodiments, the fourth time-frequency resource is determined according to third indication information; wherein, the third indication information is carried in the first downlink channel or signal, or the third indication information is carried in the third downlink channel or signal.

[0272] In some embodiments, the terminal device determines the fourth time-frequency resource according to third indication information.

[0273] In some embodiments, the third indication information is used to indicate one or more of the following information:

[0274] a time domain position of the fourth time-frequency resource;

[0275] a frequency domain position of the fourth time-frequency resource;

[0276] a period of the fourth time-frequency resource;

[0277] an offset of the fourth time-frequency resource relative to the first time-frequency resource;

[0278] a number of time domain units included in the fourth time-frequency resource;

[0279] a number of frequency domain units included in the fourth time-frequency resource.

[0280] In some embodiments, the third DCI is also used to indicate whether to receive the paging message; or the fourth DCI is also used to indicate whether to receive the paging message.

[0281] In some embodiments, the third DCI is also used to indicate whether to receive the paging message; or the fourth DCI is also used to indicate whether to receive the paging message, which can be replaced by: the third DCI is also used to indicate to receive the paging message; or the fourth DCI is also used to indicate to receive the paging message.

[0282] That is, the network device can use the third DCI or the fourth DCI to indicate to the terminal device whether to receive the paging message.

[0283] For example, the indication information included in the third DCI is also used to indicate whether to receive the paging message, or the indication information included in the fourth DCI is also used to indicate whether to receive the paging message.

[0284] For example, the third downlink channel or signal is used to carry the third DCI, and the terminal device monitors the third downlink channel or signal (i.e. the third DCI) on the second time-frequency resource. If the terminal device receives the third DCI on the second time-frequency resource, the behavior of the terminal device includes at least one of the following:

[0285] If the third DCI indicates receiving a system message, the terminal device receives a second PDSCH carrying a transmission of the system message.

[0286] If the third DCI indicates receiving a paging message, the terminal device monitors the first DCI scheduling a transmission of the paging message.

[0287] In an example, as shown in FIG. 16, the terminal device receives a first downlink channel or signal, the first downlink channel or signal being used to determine a location of a second time-frequency resource, the second time-frequency resource being used to transmit the third DCI. The terminal device monitors the third DCI on the second time-frequency resource, and upon receiving the third DCI transmitted on the second time-frequency resource, if the third DCI indicates receiving a system message, the terminal device receives a second PDSCH carrying a transmission of the system message; and / or, if the third DCI indicates receiving a paging message, the terminal device monitors the first DCI scheduling a transmission of the paging message.

[0288] Exemplarily, a third downlink channel or signal is used to carry a fourth DCI, and the terminal device monitors the third downlink channel or signal (i.e., the fourth DCI) on the second time-frequency resource. If the terminal device receives the fourth DCI on the second time-frequency resource, the terminal device’s behavior includes at least one of the following:

[0289] If the fourth DCI indicates receiving a system message, the terminal device monitors the third DCI scheduling a transmission of the system message;

[0290] If the fourth DCI indicates receiving a paging message, the terminal device monitors the first DCI scheduling a transmission of the paging message;

[0291] If the fourth DCI does not indicate receiving a system message or the fourth DCI indicates not receiving a system message, the terminal device does not monitor the third DCI scheduling a transmission of the system message.

[0292] In an example, as shown in FIG. 17, the terminal device receives a first downlink channel or signal, and determines a location of a second time-frequency resource based on the first downlink channel or signal, the second time-frequency resource being used to transmit a fourth DCI. The terminal device monitors the fourth DCI on the second time-frequency resource. Understandably, in some cases, after determining the second time-frequency resource, the terminal device can not need to receive the first downlink channel or signal any more, but monitors the fourth DCI on the second time-frequency resource. The fourth DCI is used to indicate whether to receive a paging message and / or whether to receive a system message. In the case where the fourth DCI indicates receiving a system message, the terminal device monitors a third DCI scheduling a transmission of the system message on a fourth time-frequency resource, and receives a second PDSCH carrying the system message according to the scheduling of the third DCI; and / or, in the case where the fourth DCI indicates receiving a paging message, the terminal device monitors the first DCI.

[0293] In the embodiments of the present application, the receiving of the paging message can be indicated by the third DCI for scheduling system message transmission or the fourth DCI for indicating whether to receive the system message, so as to realize the receiving control of the paging message and the system message by using one DCI, reduce the signaling overhead, and reduce the implementation complexity of the terminal device.

[0294] In some embodiments, in the case where the third DCI or the fourth DCI indicates receiving the paging message, the method further includes: monitoring a first DCI, wherein the first DCI is used for scheduling transmission of the paging message.

[0295] In some embodiments, in the case where the third DCI or the fourth DCI indicates not receiving the paging message or does not indicate receiving the paging message, the monitoring of the first DCI is not performed.

[0296] In some embodiments, the first downlink channel or signal is used for determining the second time-frequency resource, including:

[0297] The fourth indication information is carried in the first downlink channel or signal, and the fourth indication information is used for determining the second time-frequency resource.

[0298] Correspondingly, the terminal device receives the first downlink channel or signal, and determines the second time-frequency resource based on the fourth indication information carried in the first downlink channel or signal.

[0299] In some embodiments, the fourth indication information is used for indicating one or more of the following information:

[0300] The time domain position of the second time-frequency resource;

[0301] The frequency domain position of the second time-frequency resource;

[0302] The period of the second time-frequency resource;

[0303] The offset of the second time-frequency resource relative to the first time-frequency resource;

[0304] The number of time domain units included in the second time-frequency resource;

[0305] The number of frequency domain units included in the second time-frequency resource.

[0306] In some embodiments, the first downlink channel or signal is used for determining the second time-frequency resource, including: the first time-frequency resource is used for determining the second time-frequency resource.

[0307] Correspondingly, the terminal device determines the second time-frequency resource based on the first time-frequency resource.

[0308] In some embodiments, the first time-frequency resource is used to determine the second time-frequency resource can be understood as that the first time-frequency resource is associated with the second time-frequency resource.

[0309] In some embodiments, the association between the first time-frequency resource and the second time-frequency resource comprises one of the following:

[0310] one first time-frequency resource is associated with one second time-frequency resource, one first time-frequency resource is associated with a first quantity of second time-frequency resources, and a second quantity of first time-frequency resources is associated with one second time-frequency resource.

[0311] In some embodiments, the first quantity or the second quantity is preset or indicated by indication information carried in the first downlink channel or signal.

[0312] In some embodiments, the first time-frequency resource is used to determine the second time-frequency resource, comprising:

[0313] a time domain position of the first time-frequency resource is used to determine a time domain position of the second time-frequency resource; and / or,

[0314] a frequency domain position of the first time-frequency resource is used to determine a frequency domain position of the second time-frequency resource.

[0315] Correspondingly, the terminal device determines a time domain position of the second time-frequency resource based on a time domain position of the first time-frequency resource, and / or determines a frequency domain position of the second time-frequency resource based on a frequency domain position of the first time-frequency resource.

[0316] In some embodiments, the time domain position of the first time-frequency resource is used to determine the time domain position of the second time-frequency resource, comprising:

[0317] a starting position and / or an ending position of the time domain position of the first time-frequency resource is used to determine a starting position of the time domain position of the second time-frequency resource, and / or a quantity of time domain units included in the first time-frequency resource is used to determine a quantity of time domain units included in the second time-frequency resource.

[0318] In some embodiments, the terminal device determines the starting position of the time domain position of the second time-frequency resource according to the starting position and / or the ending position of the time domain position of the first time-frequency resource.

[0319] In an example, the starting position of the time domain position of the second time-frequency resource has an offset value from the ending position of the time domain position of the first time-frequency resource; or the starting position of the time domain position of the second time-frequency resource has an offset value from the starting position of the time domain position of the first time-frequency resource.

[0320] In an example, a start position of the time domain position of the second time-frequency resource is the same as an end position of the time domain position of the first time-frequency resource; or, a start position of the time domain position of the second time-frequency resource is the same as a start position of the time domain position of the first time-frequency resource.

[0321] In the embodiments of the present application, if the start position of the time domain position of the second time-frequency resource has an offset value from the start position or the end position of the time domain position of the first time-frequency resource, the offset value is preset or indicated by the indication information carried in the first downlink channel or signal.

[0322] In some embodiments, the terminal device determines the number of time domain units included in the second time-frequency resource according to the number of time domain units included in the first time-frequency resource.

[0323] In an example, the number of time domain units included in the second time-frequency resource is the same as the number of time domain units included in the first time-frequency resource.

[0324] Taking a symbol as an example of a time domain unit, the number of symbols included in the second time-frequency resource is the same as the number of symbols included in the first time-frequency resource.

[0325] In some embodiments, the frequency domain position of the first time-frequency resource is used to determine the frequency domain position of the second time-frequency resource, including:

[0326] The start position and / or the end position of the frequency domain position of the first time-frequency resource is used to determine the start position of the frequency domain position of the second time-frequency resource, and / or, the number of frequency domain units included in the first time-frequency resource is used to determine the number of frequency domain units included in the second time-frequency resource.

[0327] In some embodiments, the terminal device determines the start position of the frequency domain position of the second time-frequency resource according to the start position and / or the end position of the frequency domain position of the first time-frequency resource.

[0328] In an example, the start position of the frequency domain position of the second time-frequency resource has an offset value from the end position of the frequency domain position of the first time-frequency resource; or, the start position of the frequency domain position of the second time-frequency resource has an offset value from the start position of the frequency domain position of the first time-frequency resource.

[0329] In an example, the start position of the frequency domain position of the second time-frequency resource is the same as the end position of the frequency domain position of the first time-frequency resource; or, the start position of the frequency domain position of the second time-frequency resource is the same as the start position of the frequency domain position of the first time-frequency resource.

[0330] In the embodiments of the present application, if the start position of the frequency domain position of the second time-frequency resource has an offset value from the start position or the end position of the frequency domain position of the first time-frequency resource, the offset value is preset or indicated by the indication information carried in the first downlink channel or signal.

[0331] In some embodiments, the terminal device determines the number of frequency domain units included in the second time-frequency resource according to the number of frequency domain units included in the first time-frequency resource.

[0332] In an example, the number of frequency domain units included in the second time-frequency resource is the same as the number of frequency domain units included in the first time-frequency resource.

[0333] Taking PRB as an example of the frequency domain unit, the number of PRBs included in the second time-frequency resource is the same as the number of PRBs included in the first time-frequency resource.

[0334] In some embodiments, the first downlink channel or signal and the second downlink channel or signal or the third downlink channel or signal have a QCL relationship.

[0335] In some embodiments, the method further comprises: transmitting a first uplink channel or signal on a fifth time-frequency resource, the first uplink channel or signal being used to request transmission of a system message of the first cell.

[0336] That is, the terminal device can request the network device to transmit the system message through the first uplink channel or signal.

[0337] In some embodiments, the system message of the first cell can include uplink cell access configuration information.

[0338] In some embodiments, the terminal device transmits the first uplink channel or signal in the case that the second time-frequency resource is not used to transmit the system message. It can be understood that, in the case that there is no system message transmitted periodically in the network device, or in the case that the network device is in the energy saving mode, the terminal device requests the network device to transmit the system message.

[0339] In some cases, in order to save energy, the network device does not periodically transmit the system message including the uplink cell access configuration information in the network. However, when the terminal device is called by the network, there is a demand to access the network, in which case the terminal device can initiate a request to the network device through the preset or network device configured uplink resource to request transmission of the system message.

[0340] In some embodiments, the fifth time-frequency resource is predefined.

[0341] In some embodiments, the fifth time-frequency resource is determined according to fifth indication information. The fifth indication information is transmitted by the network device.

[0342] In some embodiments, the fifth indication information is used to indicate one or more of the following information:

[0343] The time domain position of the fifth time-frequency resource;

[0344] a frequency domain position of the fifth time-frequency resource;

[0345] a periodicity of the fifth time-frequency resource;

[0346] an offset of the fifth time-frequency resource relative to the first time-frequency resource;

[0347] a number of time domain units included in the fifth time-frequency resource;

[0348] a number of frequency domain units included in the fifth time-frequency resource.

[0349] In some embodiments, the fifth indication information is carried in the first downlink channel or signal.

[0350] In some embodiments, the fifth indication information is carried in the first downlink channel or signal in a case that the second time-frequency resource is not used for transmitting the third downlink channel or signal.

[0351] That is, the network device configures the fifth time-frequency resource for the terminal device to request transmission of the system message only in a case that the system message is not periodically transmitted in the network.

[0352] In some embodiments, the fifth time-frequency resource is determined according to the first time-frequency resource; or, in a case that the second time-frequency resource is not used for transmitting the third downlink channel or signal, the fifth time-frequency resource is determined according to the first time-frequency resource.

[0353] In some embodiments, the first time-frequency resource used for determining the fifth time-frequency resource can be understood as that the first time-frequency resource is associated with the fifth time-frequency resource.

[0354] In some embodiments, the association between the first time-frequency resource and the fifth time-frequency resource includes one of the following:

[0355] one first time-frequency resource is associated with one fifth time-frequency resource, one first time-frequency resource is associated with a third number of fifth time-frequency resources, and a second fourth number of first time-frequency resources is associated with one fifth time-frequency resource.

[0356] In some embodiments, the third number or the fourth number is preset or indicated by indication information carried in the first downlink channel or signal.

[0357] In some embodiments, a time domain position of the fifth time-frequency resource is determined according to a time domain position of the first time-frequency resource; and / or, a frequency domain position of the fifth time-frequency resource is determined according to a frequency domain position of the first time-frequency resource.

[0358] In the embodiments of the present application, the manner in which the time domain position of the first time-frequency resource determines the time domain resource of the fifth time-frequency resource can refer to the manner in which the time domain position of the first time-frequency resource determines the time domain position of the second time-frequency resource, which will not be repeated here.

[0359] In the embodiments of the present application, the manner in which the frequency domain position of the first time-frequency resource determines the frequency domain resource of the fifth time-frequency resource can refer to the manner in which the frequency domain position of the first time-frequency resource determines the frequency domain position of the second time-frequency resource, which will not be repeated here.

[0360] The following will take the second downlink channel or signal for transmitting the paging message and the third downlink channel or signal for transmitting the system message as examples to exemplarily describe the scheme in the embodiments of the present application. It should be understood that the scheme in the embodiments of the present application is not limited thereto.

[0361] FIG. 18 shows an example in which the first indication information and the second indication information are included in the first downlink channel or signal. In this example, the second indication information is used to configure the time domain position and / or the frequency domain position of the second time-frequency resource, and the first indication information is used to configure the second time-frequency resource for transmitting the second downlink channel or signal and / or the third downlink channel or signal. In this example, the second downlink channel or signal is used to carry the first DCI or the second DCI, and the third downlink channel or signal is used to carry the third DCI or the fourth DCI.

[0362] Based on the first indication information, the terminal device can determine the transmission manner of the network device to include one of the following manners:

[0363] Manner 1: the second time-frequency resource is used to transmit the first DCI or the second DCI;

[0364] Manner 2: the second time-frequency resource is used to transmit the third DCI or the fourth DCI;

[0365] Manner 3: the second time-frequency resource is used to transmit the first DCI or the second DCI, and the third DCI or the fourth DCI.

[0366] As shown in FIG. 18, when the terminal device determines that the transmission manner of the network device is manner 1, the second time-frequency resource is used to transmit the first DCI or the second DCI, and the terminal device listens to the first DCI or the second DCI on the second time-frequency resource. When the terminal device determines that the transmission manner of the network device is manner 2, the second time-frequency resource is used to transmit the third DCI or the fourth DCI, and the terminal device listens to the third DCI or the fourth DCI on the second time-frequency resource. When the terminal device determines that the transmission manner of the network device is manner 3, the second time-frequency resource is used to transmit the first DCI or the second DCI, and the third DCI or the fourth DCI, and the terminal device listens to the first DCI or the second DCI, and the third DCI or the fourth DCI on the second time-frequency resource.

[0367] It can be understood that when the second time-frequency resource is used for transmitting the first DCI or the second DCI, whether the second time-frequency resource is used for transmitting the first DCI or the second DCI can be protocol preset or configured by the network device. When the second time-frequency resource is used for transmitting the third DCI or the fourth DCI, whether the second time-frequency resource is used for transmitting the third DCI or the fourth DCI can be protocol preset or configured by the network device. Embodiments of the present application do not limit this.

[0368] FIG. 19 gives an example in which the first downlink channel or signal includes second indication information, and the first downlink channel or signal corresponds to first scrambling code information and / or second scrambling code information. In this example, the second indication information is used to configure the time domain position and / or frequency domain position of the second time-frequency resource, the first scrambling code information (for example, P-RNTI) corresponds to the second downlink channel or signal, and the second scrambling code information (for example, SI-RNTI) corresponds to the third downlink channel or signal. In this example, the second downlink channel or signal is used to carry the first DCI or the second DCI, and the third downlink channel or signal is used to carry the third DCI or the fourth DCI. In some cases, the first scrambling code information and / or the second scrambling code information is protocol preset, or the first scrambling code information and / or the second scrambling code information is configured by the indication information carried in the first downlink channel or signal.

[0369] As shown in FIG. 19, the terminal device listens to the DCI transmitted on the second time-frequency resource according to the first scrambling code information and / or the second scrambling code information. When the terminal device detects the DCI on the second time-frequency resource according to the first scrambling code information, the terminal device can determine that the second time-frequency resource is used for transmitting the first DCI or the second DCI. When the terminal device detects the DCI on the second time-frequency resource according to the second scrambling code information, the terminal device can determine that the second time-frequency resource is used for transmitting the third DCI or the fourth DCI. When the terminal device detects the DCI on the second time-frequency resource according to the first scrambling code information and detects the DCI on the second time-frequency resource according to the second scrambling code information, the terminal device can determine that the second time-frequency resource is used for transmitting the first DCI or the second DCI and is also used for transmitting the third DCI or the fourth DCI.

[0370] It can be understood that when the second time-frequency resource is used for transmitting the first DCI or the second DCI, whether the second time-frequency resource is used for transmitting the first DCI or the second DCI can be protocol preset or configured by the network device. When the second time-frequency resource is used for transmitting the third DCI or the fourth DCI, whether the second time-frequency resource is used for transmitting the third DCI or the fourth DCI can be protocol preset or configured by the network device. Embodiments of the present application do not limit this.

[0371] FIG. 20 shows an example in which the first downlink channel or signal includes the second indication information, and the first downlink channel or signal corresponds to a first search space set (SSS) and / or a second SSS. In this example, the second indication information is used to configure a time domain location and / or a frequency domain location of a second time-frequency resource, and the second time-frequency resource corresponds to the first SSS and / or the second SSS. The first SSS corresponds to the second downlink channel or signal, and the second SSS corresponds to the third downlink channel or signal. In this example, the second downlink channel or signal is used to carry the first DCI or the second DCI, and the third downlink channel or signal is used to carry the third DCI or the fourth DCI. In some cases, the second time-frequency resource corresponding to the first SSS and / or the second SSS is preconfigured by a protocol, or the second time-frequency resource corresponding to the first SSS and / or the second SSS is configured by the indication information carried in the first downlink channel or signal.

[0372] The terminal device can determine the transmission manner of the network device to be one of the following manners:

[0373] Manner 1: when the second time-frequency resource corresponds to the first SSS, the second time-frequency resource is used to transmit the first DCI or the second DCI;

[0374] Manner 2: when the second time-frequency resource corresponds to the second SSS, the second time-frequency resource is used to transmit the third DCI or the fourth DCI;

[0375] Manner 3: when the second time-frequency resource corresponds to the first SSS and the second SSS, the second time-frequency resource is used to transmit the first DCI or the second DCI, and the third DCI or the fourth DCI.

[0376] As shown in FIG. 20, when the terminal device determines that the transmission manner of the network device is manner 1, the second time-frequency resource is used to transmit the first DCI or the second DCI, and the terminal device listens to the first DCI or the second DCI on the second time-frequency resource. When the terminal device determines that the transmission manner of the network device is manner 2, the second time-frequency resource is used to transmit the third DCI or the fourth DCI, and the terminal device listens to the third DCI or the fourth DCI on the second time-frequency resource. When the terminal device determines that the transmission manner of the network device is manner 3, the second time-frequency resource is used to transmit the first DCI or the second DCI, and the third DCI or the fourth DCI, and the terminal device listens to the first DCI or the second DCI, and the third DCI or the fourth DCI on the second time-frequency resource.

[0377] It can be understood that when the second time-frequency resource is used for transmitting the first DCI or the second DCI, whether the second time-frequency resource is used for transmitting the first DCI or the second DCI can be preset by a protocol or configured by the network device. When the second time-frequency resource is used for transmitting the third DCI or the fourth DCI, whether the second time-frequency resource is used for transmitting the third DCI or the fourth DCI can be preset by a protocol or configured by the network device. The embodiments of the present application do not limit this.

[0378] FIG. 21 gives an example of including second indication information in the first downlink channel or signal. In this example, the second indication information is used to configure the time domain position and / or the frequency domain position of the second time-frequency resource. In this example, the second downlink channel or signal is used to carry the second DCI, and the third downlink channel or signal is used to carry the fourth DCI.

[0379] The terminal device determines the transmission mode of the network device to include one of the following modes (for example, the terminal device can determine based on the first indication information or the scrambling code information or the search space set information, and the like) :

[0380] Mode 1: the second time-frequency resource is used for transmitting the second DCI;

[0381] Mode 2: the second time-frequency resource is used for transmitting the fourth DCI.

[0382] As shown in FIG. 21, when the terminal device determines that the transmission mode of the network device is mode 1, the terminal device listens to the second DCI on the second time-frequency resource. In the case where the second DCI indicates receiving a paging message, the terminal device listens to the first DCI on the third time-frequency resource, and receives the first PDSCH carrying the paging message according to the scheduling of the first DCI; and / or, in the case where the second DCI indicates receiving a system message (for example, system message update), the terminal device listens to the third DCI on the fourth time-frequency resource, and receives the second PDSCH carrying the system message according to the scheduling of the third DCI.

[0383] When the terminal device determines that the transmission mode of the network device is mode 2, the terminal device listens to the fourth DCI on the second time-frequency resource. In the case where the fourth DCI indicates receiving a paging message, the terminal device listens to the first DCI on the third time-frequency resource, and receives the first PDSCH carrying the paging message according to the scheduling of the first DCI; and / or, in the case where the fourth DCI indicates receiving a system message (for example, system message update), the terminal device listens to the third DCI on the fourth time-frequency resource, and receives the second PDSCH carrying the system message according to the scheduling of the third DCI.

[0384] FIG. 22 shows an example of the first downlink channel or signal including the fifth indication information. In this example, the fifth indication information is used to configure the time domain position and / or the frequency domain position of the fifth time-frequency resource. The fifth time-frequency resource is used to transmit the first uplink channel or signal, which is used to request the network device to transmit the system message.

[0385] As shown in FIG. 22, when the network device is in the energy saving mode, there is no system message transmitted periodically in the network device. When the terminal device receives the first downlink channel or signal, the terminal device can determine the fifth time-frequency resource (for example, the On-demand SIB resource) used to transmit the first uplink channel or signal according to the first downlink channel or signal. When the terminal device has a demand (for example, the terminal device needs to initiate the uplink access after receiving the paging message or the terminal device needs the uplink access based on other reasons), the terminal device can send the first uplink channel or signal to the network device through the fifth time-frequency resource to request the network device to transmit the system message.

[0386] In some embodiments, when the network device receives the first uplink channel or signal sent by the terminal device, the network device sends the system message block (SIB) requested by the terminal device to the terminal device.

[0387] In some embodiments, the first downlink channel or signal includes the second indication information, and the second indication information is used to configure the time domain position and / or the frequency domain position of the second time-frequency resource, where the second time-frequency resource is used to transmit the second downlink channel or signal.

[0388] Corresponding to the wireless communication method on the terminal device side, the wireless communication method provided by the embodiments of the present application is applied to the network device, as shown in FIG. 23, and includes the following steps.

[0389] S2301, the network device sends a first downlink channel or signal on a first time-frequency resource of a first cell, where the first downlink channel or signal is used to determine a second time-frequency resource, and the second time-frequency resource is used to transmit a second downlink channel or signal and / or a third downlink channel or signal.

[0390] In the embodiments of the present application, the second time-frequency resource used to transmit the second downlink channel or signal and / or the third downlink channel or signal can be determined according to the received first downlink channel or signal. Through the above scheme, the network device in the energy saving state can reduce the transmission of other unnecessary public channels or signals, so as to ensure the communication performance of the terminal device and achieve the purpose of energy saving. Correspondingly, the terminal device also does not need to monitor the unnecessary public channels or signals, so as to achieve the purpose of energy saving of the terminal device.

[0391] In some embodiments, the first indication information is used to determine that the second time-frequency resource is used for transmission of the second downlink channel or signal and / or the third downlink channel or signal.

[0392] In some embodiments, the first indication information is used to indicate one of: the second time-frequency resource is used for transmission of the second downlink channel or signal; the second time-frequency resource is used for transmission of the third downlink channel or signal; the second time-frequency resource is used for transmission of the second downlink channel or signal and the third downlink channel or signal; whether the second time-frequency resource is used for transmission of the second downlink channel or signal; whether the second time-frequency resource is used for transmission of the third downlink channel or signal; the first cell is in energy saving mode or the first cell is in abnormal mode; the first cell is in non-energy saving mode or the first cell is in normal mode.

[0393] In some embodiments, in a case where the first indication information indicates that the second time-frequency resource is used for transmission of the second downlink channel or signal, the second time-frequency resource is used for transmission of the second downlink channel or signal; or,

[0394] In a case where the first indication information indicates that the second time-frequency resource is used for transmission of the third downlink channel or signal, the second time-frequency resource is used for transmission of the third downlink channel or signal; or,

[0395] In a case where the first indication information indicates that the second time-frequency resource is used for transmission of the second downlink channel or signal and the third downlink channel or signal, the second time-frequency resource is used for transmission of the second downlink channel or signal and the third downlink channel or signal; or,

[0396] In a case where the first indication information indicates that the first cell is in energy saving mode or the first cell is in abnormal mode, the second time-frequency resource is used for transmission of the second downlink channel or signal; or, in a case where the first indication information indicates that the first cell is in non-energy saving mode or the first cell is in normal mode, the second time-frequency resource is used for transmission of the third downlink channel or signal; or, in a case where the first indication information indicates that the first cell is in non-energy saving mode or the first cell is in normal mode, the second time-frequency resource is used for transmission of the second downlink channel or signal and the third downlink channel or signal.

[0397] In some embodiments, the second time-frequency resource is used for transmission of the second downlink channel or signal;

[0398] The first indication information is used to determine that the second time-frequency resource is used for transmission of the second downlink channel or signal and / or the third downlink channel or signal, comprising:

[0399] in a case where the first indication information indicates that the second time-frequency resource is used for transmission of the third downlink channel or signal, the second time-frequency resource is used for transmission of the second downlink channel or signal and the third downlink channel or signal; or,

[0400] in a case where the first indication information does not indicate that the second time-frequency resource is used for transmission of the second downlink channel or signal or there is no first indication information, the second time-frequency resource is used for transmission of the third downlink channel or signal.

[0401] In some embodiments, the second time-frequency resource is used for transmission of the third downlink channel or signal.

[0402] The first indication information for determining that the second time-frequency resource is used for transmission of the second downlink channel or signal and / or the third downlink channel or signal comprises:

[0403] in a case where the first indication information indicates that the second time-frequency resource is used for transmission of the second downlink channel or signal, the second time-frequency resource is used for transmission of the second downlink channel or signal and the third downlink channel or signal; or,

[0404] in a case where the first indication information does not indicate that the second time-frequency resource is used for transmission of the second downlink channel or signal or there is no first indication information, the second time-frequency resource is used for transmission of the third downlink channel or signal.

[0405] In some embodiments, the first downlink channel or signal is used to carry the first indication information.

[0406] In some embodiments, the second downlink channel or signal or the third downlink channel or signal is used to carry the first indication information, and the first indication information for determining that the second time-frequency resource is used for transmission of the second downlink channel or signal and / or the third downlink channel or signal comprises:

[0407] in a case where the first indication information carried in the downlink channel or signal transmitted on the second time-frequency resource indicates a first value, the second time-frequency resource is used for transmission of the second downlink channel or signal; or,

[0408] in a case where the first indication information carried in the downlink channel or signal transmitted on the second time-frequency resource indicates a second value, the second time-frequency resource is used for transmission of the third downlink channel or signal.

[0409] In some embodiments, the first downlink channel or signal corresponds to first scrambling code information or second scrambling code information; wherein,

[0410] In a case where the first downlink channel or signal corresponds to the first scrambling code information, the second time-frequency resource is used for transmission of the second downlink channel or signal; or,

[0411] In a case where the first downlink channel or signal corresponds to the second scrambling code information, the second time-frequency resource is used for transmission of the third downlink channel or signal.

[0412] In some embodiments, the second downlink channel or signal corresponds to first scrambling code information, and the third downlink channel or signal corresponds to second scrambling code information.

[0413] In a case where the downlink channel or signal transmitted on the second time-frequency resource corresponds to the first scrambling code information, the second time-frequency resource is used for transmission of the second downlink channel or signal; or, in a case where the downlink channel or signal transmitted on the second time-frequency resource corresponds to the second scrambling code information, the second time-frequency resource is used for transmission of the third downlink channel or signal.

[0414] In some embodiments, the second downlink channel or signal corresponds to a first search space set, and the third downlink channel or signal corresponds to a second search space set.

[0415] In a case where the second time-frequency resource corresponds to the first search space set, the second time-frequency resource is used for transmission of the second downlink channel or signal; or, in a case where the second time-frequency resource corresponds to the second search space set, the second time-frequency resource is used for transmission of the third downlink channel or signal.

[0416] In some embodiments, the method further includes: sending, by the network device, the second downlink channel or signal on the second time-frequency resource; and / or, sending, by the network device, the third downlink channel or signal on the second time-frequency resource.

[0417] In some embodiments, the second downlink channel or signal is used for transmission of a paging message, and / or the third downlink channel or signal is used for transmission of a system message.

[0418] In some embodiments, the second downlink channel or signal used for transmission of a paging message includes:

[0419] The second downlink channel or signal is used for carrying first downlink control information (DCI), the first DCI being used for scheduling transmission of the paging message; or, the second downlink channel or signal is used for carrying second DCI, the second DCI being used for indicating whether to receive the paging message; or, the second downlink channel or signal is used for carrying the paging message.

[0420] In some embodiments, in a case where the second downlink channel or signal is used to carry the second DCI, the method further includes one or more of the following:

[0421] In a case where the second DCI is transmitted on the second time-frequency resource and the second DCI indicates receiving the paging message, the network device transmits a first DCI on a third time-frequency resource; in a case where the second DCI is transmitted on the second time-frequency resource and the second DCI indicates not receiving the paging message or the second DCI does not indicate receiving the paging message, the network device does not transmit the first DCI on the third time-frequency resource; in a case where the second DCI is not transmitted on the second time-frequency resource, the network device does not transmit the first DCI on the third time-frequency resource; wherein the first DCI is used to schedule transmission of the paging message.

[0422] In some embodiments, the third time-frequency resource is determined according to second indication information; wherein the second indication information is carried in the first downlink channel or signal, or the second indication information is carried in the second downlink channel or signal.

[0423] In some embodiments, the first DCI is further used to indicate whether to receive the system message; or the second DCI is further used to indicate whether to receive the system message.

[0424] In the embodiments of the present application, the system message update can be indicated by the first DCI scheduling the transmission of the paging message or the second DCI indicating whether to receive the paging message, so as to realize the use of one DCI to control the reception of the paging message and the system message, reduce the signaling overhead, and reduce the implementation complexity of the terminal device.

[0425] In some embodiments, in a case where the first DCI or the second DCI indicates receiving the system message, the method further includes:

[0426] The network device transmits a third DCI, wherein the third DCI is used to schedule transmission of the system message.

[0427] In some embodiments, the third downlink channel or signal is used to transmit a system message, including:

[0428] The third downlink channel or signal is used to carry a third DCI, the third DCI is used to schedule transmission of the system message; or the third downlink channel or signal is used to carry a fourth DCI, the fourth DCI is used to indicate whether to receive the system message; or the third downlink channel or signal is used to carry the system message.

[0429] In some embodiments, in a case where the third downlink channel or signal is used to carry the fourth DCI, the method further includes one or more of the following:

[0430] In a case where the fourth DCI is sent on the second time-frequency resource and the fourth DCI indicates receiving the system message, the network device sends a third DCI on a fourth time-frequency resource;

[0431] In a case where the fourth DCI is sent on the second time-frequency resource and the fourth DCI indicates not receiving the system message or the fourth DCI does not indicate receiving the system message, the network device does not send the third DCI on the fourth time-frequency resource;

[0432] In a case where the fourth DCI is not sent on the second time-frequency resource, the network device does not send the third DCI on the fourth time-frequency resource;

[0433] The third DCI is used to schedule transmission of the system message.

[0434] In some embodiments, the fourth time-frequency resource is determined according to third indication information; the third indication information is carried in the first downlink channel or signal, or the third indication information is carried in the third downlink channel or signal.

[0435] In some embodiments, the third DCI is further used to indicate whether to receive the paging message; or the fourth DCI is further used to indicate whether to receive the paging message.

[0436] In the embodiments of the present application, the third DCI scheduling system message transmission or the fourth DCI indicating whether to receive the system message can be used to indicate receiving the paging message, so as to realize the use of one DCI to control the reception of the paging message and the system message, reduce the signaling overhead, and reduce the implementation complexity of the terminal device.

[0437] In some embodiments, in a case where the third DCI or the fourth DCI indicates receiving the paging message, the method further includes that the network device sends a first DCI, wherein the first DCI is used to schedule transmission of the paging message.

[0438] In some embodiments, the first downlink channel or signal is used to determine a second time-frequency resource, including that fourth indication information is carried in the first downlink channel or signal, the fourth indication information being used to determine the second time-frequency resource.

[0439] In some embodiments, the fourth indication information is used to indicate one or more of the following information:

[0440] a time domain position of the second time-frequency resource; and / or, a frequency domain position of the second time-frequency resource.

[0441] In some embodiments, the first downlink channel or signal is used to determine a second time-frequency resource, including that the first time-frequency resource is used to determine the second time-frequency resource.

[0442] In some embodiments, the first time-frequency resource is used to determine the second time-frequency resource, including:

[0443] a time domain position of the first time-frequency resource is used to determine a time domain position of the second time-frequency resource; and / or,

[0444] a frequency domain position of the first time-frequency resource is used to determine a frequency domain position of the second time-frequency resource.

[0445] In some embodiments, the method further includes:

[0446] the network device receives a first uplink channel or signal on a fifth time-frequency resource, the first uplink channel or signal being used to request transmission of a system message of the first cell.

[0447] In some cases, in order to save energy, the network device does not periodically transmit a system message including uplink cell access configuration information in the network. However, when the terminal device is called by the network, there is a need to access the network, in which case the terminal device can initiate a request to the network device through a preset or network device configured uplink resource to request transmission of a system message.

[0448] In some embodiments, the fifth time-frequency resource is determined according to fifth indication information.

[0449] In some embodiments, the fifth indication information is used to indicate one or more of the following information:

[0450] a time domain position of the fifth time-frequency resource; a frequency domain position of the fifth time-frequency resource; a period of the fifth time-frequency resource; an offset of the fifth time-frequency resource relative to the first time-frequency resource; a number of time domain units included in the fifth time-frequency resource; and a number of frequency domain units included in the fifth time-frequency resource.

[0451] In some embodiments, the fifth indication information is carried in the first downlink channel or signal.

[0452] In some embodiments, the fifth indication information is carried in the first downlink channel or signal in a case that the second time-frequency resource is not used for transmitting the third downlink channel or signal.

[0453] In some embodiments, a time domain position of the fifth time-frequency resource is determined according to a time domain position of the first time-frequency resource; and / or, a frequency domain position of the fifth time-frequency resource is determined according to a frequency domain position of the first time-frequency resource.

[0454] Embodiments of the present application provide a wireless communication method, as shown in FIG. 24, applied to a wireless communication system including a terminal device and a network device, comprising:

[0455] S2401, the network device sends a first downlink channel or signal to the terminal device on a first time-frequency resource of a first cell, the first downlink channel or signal is used to determine a second time-frequency resource, the second time-frequency resource is used to transmit a second downlink channel or signal and / or a third downlink channel or signal.

[0456] S2402, the terminal device determines that the second time-frequency resource is used to transmit the second downlink channel or signal and / or the third downlink channel or signal.

[0457] The description of the network device in the wireless communication method shown in FIG. 24 can refer to the description of the network device in the wireless communication method shown in FIG. 23, and the description of the terminal device can refer to the description of the terminal device in the wireless communication method shown in FIG. 4, which will not be repeated here.

[0458] The wireless communication provided by the embodiments of the present application, the network device can be in energy saving mode or normal mode. In the energy saving mode, SSB and paging messages are transmitted in the network, and system messages are not transmitted; in the normal mode, SSB, paging messages and system messages are transmitted in the network. The 6G network device configures the working mode of the current network in the system message block associated with the synchronization signal, so that the 6G terminal device in the idle state can know the working mode of the network device in the initial access stage, which can meet the needs of terminal devices in different states to stay or communicate in the cell; at the same time, the network device can also reduce the transmission of meaningless system messages, and achieve the purpose of network energy saving.

[0459] The preferred embodiments of the present application are described in detail above with reference to the drawings, but the present application is not limited to the specific details of the above-described embodiments. Within the technical concept of the present application, various simple modifications can be made to the technical solutions of the present application, and these simple modifications all belong to the protection scope of the present application. For example, in the case of no conflict, various specific technical features described in the above-described specific embodiments can be combined in any appropriate manner. In order to avoid unnecessary repetition, various possible combinations are not described again in the present application. For another example, various different embodiments of the present application can also be combined in any appropriate manner, as long as it does not deviate from the idea of the present application, and it should also be considered as disclosed in the present application. For another example, in the case of no conflict, each embodiment described in the present application and / or the technical features in each embodiment can be combined with any prior art, and the technical solutions obtained after the combination should also fall within the protection scope of the present application.

[0460] It should also be understood that, in various method embodiments of the present application, the magnitude of the sequence number of the above-described processes does not mean the order of execution, and the execution order of the processes should be determined according to its function and inherent 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 represent the transmission direction of signals or data, wherein "downlink" is used to represent the first direction of the transmission direction of signals or data from the station to the user equipment of the cell, "uplink" is used to represent the second direction of the transmission direction of signals or data from the user equipment of the cell to the station, and "sidelink" is used to represent the third direction of the transmission direction of signals or data from the user equipment 1 to the user equipment 2. For example, "downlink signal" represents 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 only used to describe the association relationship of the associated objects, and indicates that there can be three relationships. Specifically, A and / or B can represent three cases of A alone, A and B together, and B alone. In addition, the character " / " in this paper generally represents that the front and rear associated objects are in an "or" relationship.

[0461] FIG. 25 is a structural composition schematic diagram of a terminal device provided by an embodiment of the present application. As shown in FIG. 25, the terminal device 2500 includes:

[0462] The first communication unit 2501 is configured to receive a first downlink channel or signal on a first time-frequency resource of a first cell, the first downlink channel or signal being used to determine a second time-frequency resource, the second time-frequency resource being used to transmit a second downlink channel or signal and / or a third downlink channel or signal.

[0463] The determination unit 2502 is configured to determine that the second time-frequency resource is used to transmit the second downlink channel or signal and / or the third downlink channel or signal.

[0464] In some embodiments, the determining unit 2502 is configured to determine, according to the first indication information, that the second time-frequency resource is used for transmission of the second downlink channel or signal and / or the third downlink channel or signal.

[0465] In some embodiments, the first indication information is used to indicate one of: the second time-frequency resource is used for transmission of the second downlink channel or signal; the second time-frequency resource is used for transmission of the third downlink channel or signal; the second time-frequency resource is used for transmission of the second downlink channel or signal and the third downlink channel or signal; whether the second time-frequency resource is used for transmission of the second downlink channel or signal; whether the second time-frequency resource is used for transmission of the third downlink channel or signal; the first cell is in energy saving mode or the first cell is in abnormal mode; the first cell is in non-energy saving mode or the first cell is in normal mode.

[0466] In some embodiments, in a case where the first indication information indicates that the second time-frequency resource is used for transmission of the second downlink channel or signal, the second time-frequency resource is used for transmission of the second downlink channel or signal; or,

[0467] In a case where the first indication information indicates that the second time-frequency resource is used for transmission of the third downlink channel or signal, the second time-frequency resource is used for transmission of the third downlink channel or signal; or,

[0468] In a case where the first indication information indicates that the second time-frequency resource is used for transmission of the second downlink channel or signal and the third downlink channel or signal, the second time-frequency resource is used for transmission of the second downlink channel or signal and the third downlink channel or signal; or,

[0469] In a case where the first indication information indicates that the first cell is in energy saving mode or the first cell is in abnormal mode, the second time-frequency resource is used for transmission of the second downlink channel or signal; or,

[0470] In a case where the first indication information indicates that the first cell is in non-energy saving mode or the first cell is in normal mode, the second time-frequency resource is used for transmission of the third downlink channel or signal; or,

[0471] In a case where the first indication information indicates that the first cell is in non-energy saving mode or the first cell is in normal mode, the second time-frequency resource is used for transmission of the second downlink channel or signal and the third downlink channel or signal.

[0472] In some embodiments, the determining unit 2502 is further configured to:

[0473] the second time-frequency resource is used for transmission of the second downlink channel or signal;

[0474] in a case where the first indication information indicates that the second time-frequency resource is used for transmission of the third downlink channel or signal, determining that the second time-frequency resource is used for transmission of the second downlink channel or signal and the third downlink channel or signal; or,

[0475] in a case where the first indication information does not indicate that the second time-frequency resource is used for transmission of the second downlink channel or signal or there is no first indication information, determining that the second time-frequency resource is used for transmission of the third downlink channel or signal.

[0476] In some embodiments, the determining unit 2502 is further configured to:

[0477] the second time-frequency resource is used for transmission of the third downlink channel or signal;

[0478] in a case where the first indication information indicates that the second time-frequency resource is used for transmission of the second downlink channel or signal, determining that the second time-frequency resource is used for transmission of the second downlink channel or signal and the third downlink channel or signal; or,

[0479] in a case where the first indication information does not indicate that the second time-frequency resource is used for transmission of the second downlink channel or signal or there is no first indication information, determining that the second time-frequency resource is used for transmission of the third downlink channel or signal.

[0480] In some embodiments, the first downlink channel or signal is used to carry the first indication information.

[0481] In some embodiments, the determining unit 2502 is further configured to:

[0482] the second downlink channel or signal or the third downlink channel or signal is used to carry the first indication information,

[0483] in a case where the first indication information carried in the downlink channel or signal transmitted on the second time-frequency resource indicates a first value, determining that the second time-frequency resource is used for transmission of the second downlink channel or signal; or in a case where the first indication information carried in the downlink channel or signal transmitted on the second time-frequency resource indicates a second value, determining that the second time-frequency resource is used for transmission of the third downlink channel or signal.

[0484] In some embodiments, the determining unit 2502 is further configured to: the first downlink channel or signal corresponds to first scrambling code information or second scrambling code information,

[0485] in a case that the first downlink channel or signal is detected according to the first scrambling code information, determining that the second time-frequency resource is used for transmitting the second downlink channel or signal; or in a case that the first downlink channel or signal is detected according to the second scrambling code information, determining that the second time-frequency resource is used for transmitting the third downlink channel or signal.

[0486] In some embodiments, the determining unit 2502 is further configured to:

[0487] the second downlink channel or signal corresponds to third scrambling code information, and the third downlink channel or signal corresponds to fourth scrambling code information,

[0488] in a case that the first downlink channel or signal is detected according to the first scrambling code information, determining that the second time-frequency resource is used for transmitting the second downlink channel or signal; or in a case that the first downlink channel or signal is detected according to the second scrambling code information, determining that the second time-frequency resource is used for transmitting the third downlink channel or signal.

[0489] In some embodiments, the determining unit 2502 is further configured to:

[0490] the second downlink channel or signal corresponds to a first search space set, and the third downlink channel or signal corresponds to a second search space set;

[0491] in a case that the second time-frequency resource corresponds to the first search space set, determining that the second time-frequency resource is used for transmitting the second downlink channel or signal; or in a case that the second time-frequency resource corresponds to the second search space set, determining that the second time-frequency resource is used for transmitting the third downlink channel or signal.

[0492] In some embodiments, the first communication unit 2501 is further configured to:

[0493] monitoring or receiving the second downlink channel or signal on the second time-frequency resource; and / or monitoring or receiving the third downlink channel or signal on the second time-frequency resource.

[0494] In some embodiments, the second downlink channel or signal is used for transmitting a paging message, and / or the third downlink channel or signal is used for transmitting a system message.

[0495] In some embodiments, the second downlink channel or signal is used for transmitting a paging message, including: the second downlink channel or signal is used for carrying a first downlink control information (DCI), the first DCI is used for scheduling transmission of the paging message; or, the second downlink channel or signal is used for carrying a second DCI, the second DCI is used for indicating whether to receive the paging message; or, the second downlink channel or signal is used for carrying the paging message.

[0496] In some embodiments, the first communication unit 2501 is further configured to:

[0497] In the case where the second downlink channel or signal is used for carrying the second DCI, one or more of the following is included:

[0498] In the case where the second DCI is received on the second time-frequency resource and the second DCI indicates to receive the paging message, listening for a first DCI on a third time-frequency resource; in the case where the second DCI is received on the second time-frequency resource and the second DCI indicates not to receive the paging message or the second DCI does not indicate to receive the paging message, not listening for the first DCI on the third time-frequency resource; in the case where the second DCI is not received on the second time-frequency resource, not listening for the first DCI on the third time-frequency resource; wherein the first DCI is used for scheduling transmission of the paging message.

[0499] In some embodiments, the third time-frequency resource is determined according to second indication information; wherein the second indication information is carried in the first downlink channel or signal, or the second indication information is carried in the second downlink channel or signal.

[0500] In some embodiments, the first DCI is further used for indicating whether to receive the system message; or, the second DCI is further used for indicating whether to receive the system message.

[0501] In some embodiments, the first communication unit 2501 is further configured to: in the case where the first DCI or the second DCI indicates to receive the system message, listening for a third DCI, wherein the third DCI is used for scheduling transmission of the system message.

[0502] In some embodiments, the third downlink channel or signal is used for transmitting a system message, including:

[0503] The third downlink channel or signal is used to carry a third DCI, the third DCI is used to schedule transmission of the system message; or, the third downlink channel or signal is used to carry a fourth DCI, the fourth DCI is used to indicate whether to receive the system message; or, the third downlink channel or signal is used to carry the system message.

[0504] In some embodiments, the first communication unit 2501 is further configured to:

[0505] In the case where the third downlink channel or signal is used to carry the fourth DCI, one or more of the following is included:

[0506] In the case where the fourth DCI is received on the second time-frequency resource and the fourth DCI indicates to receive the system message, listening to a third DCI on a fourth time-frequency resource;

[0507] In the case where the fourth DCI is received on the second time-frequency resource and the fourth DCI indicates not to receive the system message or the fourth DCI does not indicate to receive the system message, not listening to the third DCI on the fourth time-frequency resource;

[0508] In the case where the fourth DCI is not received on the second time-frequency resource, not listening to the third DCI on the fourth time-frequency resource;

[0509] The third DCI is used to schedule transmission of the system message.

[0510] In some embodiments, the fourth time-frequency resource is determined according to third indication information; wherein the third indication information is carried in the first downlink channel or signal, or the third indication information is carried in the third downlink channel or signal.

[0511] In some embodiments, the third DCI is further used to indicate whether to receive the paging message; or,

[0512] The fourth DCI is further used to indicate whether to receive the paging message.

[0513] In some embodiments, the first communication unit 2501 is further configured to: in the case where the third DCI or the fourth DCI indicates to receive the paging message, listen to a first DCI, wherein the first DCI is used to schedule transmission of the paging message.

[0514] In some embodiments, the first downlink channel or signal is used to determine a second time-frequency resource, including: fourth indication information is carried in the first downlink channel or signal, the fourth indication information is used to determine the second time-frequency resource.

[0515] In some embodiments, the fourth indication information is used to indicate one or more of the following information:

[0516] a time domain position of the second time-frequency resource; a frequency domain position of the second time-frequency resource; a periodicity of the second time-frequency resource; an offset of the second time-frequency resource relative to the first time-frequency resource; a number of time domain units included in the second time-frequency resource; a number of frequency domain units included in the second time-frequency resource.

[0517] In some embodiments, the first downlink channel or signal is used to determine the second time-frequency resource, including that the first time-frequency resource is used to determine the second time-frequency resource.

[0518] In some embodiments, the first time-frequency resource is used to determine the second time-frequency resource, including that a time domain position of the first time-frequency resource is used to determine a time domain position of the second time-frequency resource; and / or, a frequency domain position of the first time-frequency resource is used to determine a frequency domain position of the second time-frequency resource.

[0519] In some embodiments, the first communication unit 2501 is further configured to transmit a first uplink channel or signal on a fifth time-frequency resource, the first uplink channel or signal being used to request transmission of a system message of the first cell.

[0520] In some embodiments, the fifth time-frequency resource is determined according to fifth indication information.

[0521] In some embodiments, the fifth indication information is used to indicate one or more of the following information:

[0522] a time domain position of the fifth time-frequency resource; a frequency domain position of the fifth time-frequency resource; a periodicity of the fifth time-frequency resource; an offset of the fifth time-frequency resource relative to the first time-frequency resource; a number of time domain units included in the fifth time-frequency resource; a number of frequency domain units included in the fifth time-frequency resource.

[0523] In some embodiments, the fifth indication information is carried in the first downlink channel or signal; or,

[0524] In a case where the second time-frequency resource is not used to transmit the third downlink channel or signal, the fifth indication information is carried in the first downlink channel or signal.

[0525] In some embodiments, a time domain position of the fifth time-frequency resource is determined according to a time domain position of the first time-frequency resource; and / or, a frequency domain position of the fifth time-frequency resource is determined according to a frequency domain position of the first time-frequency resource.

[0526] In some embodiments, the first downlink channel or signal includes a synchronization signal.

[0527] In some embodiments, the first downlink channel or signal is used to carry one of: a master information block (MIB), a first system information block (SIB), the MIB and the first SIB.

[0528] In some embodiments, the first SIB comprises most basic system configuration information in the first cell; and / or, the first SIB comprises paging configuration information in the first cell.

[0529] In some embodiments, the first downlink channel or signal is used to acquire one or more of: a cell identity, system time information, downlink synchronization.

[0530] In some embodiments, the terminal device is in one of: an idle state, an inactive state and a connected state.

[0531] In the embodiments of the present application, the first communication unit in the terminal device can be implemented by a receiver in the terminal device, and the determination unit in the terminal device can be implemented by a processor in the terminal device.

[0532] FIG. 26 is a structural composition schematic diagram of a network device provided by the embodiments of the present application, as shown in FIG. 26, the network device 2600 comprises:

[0533] A second communication unit 2601, configured to send a first downlink channel or signal on a first time-frequency resource of a first cell, the first downlink channel or signal being used to determine a second time-frequency resource, the second time-frequency resource being used to transmit a second downlink channel or signal and / or a third downlink channel or signal.

[0534] In some embodiments, the first indication information is used to determine that the second time-frequency resource is used to transmit the second downlink channel or signal and / or the third downlink channel or signal.

[0535] In some embodiments, the first indication information is used to indicate one of:

[0536] The second time-frequency resource is used to transmit the second downlink channel or signal; the second time-frequency resource is used to transmit the third downlink channel or signal; the second time-frequency resource is used to transmit the second downlink channel or signal and the third downlink channel or signal; whether the second time-frequency resource is used to transmit the second downlink channel or signal; whether the second time-frequency resource is used to transmit the third downlink channel or signal; whether the first cell is in an energy saving mode or the first cell is in an abnormal mode; whether the first cell is in a non-energy saving mode or the first cell is in a normal mode.

[0537] In some embodiments, in a case where the first indication information indicates that the second time-frequency resource is used for transmission of the second downlink channel or signal, the second time-frequency resource is used for transmission of the second downlink channel or signal; or,

[0538] In a case where the first indication information indicates that the second time-frequency resource is used for transmission of the third downlink channel or signal, the second time-frequency resource is used for transmission of the third downlink channel or signal; or,

[0539] In a case where the first indication information indicates that the second time-frequency resource is used for transmission of the second downlink channel or signal and the third downlink channel or signal, the second time-frequency resource is used for transmission of the second downlink channel or signal and the third downlink channel or signal; or,

[0540] In a case where the first indication information indicates that the first cell is in the energy saving mode or the first cell is in the abnormal mode, the second time-frequency resource is used for transmission of the second downlink channel or signal; or,

[0541] In a case where the first indication information indicates that the first cell is in the non-energy saving mode or the first cell is in the normal mode, the second time-frequency resource is used for transmission of the third downlink channel or signal; or,

[0542] In a case where the first indication information indicates that the first cell is in the non-energy saving mode or the first cell is in the normal mode, the second time-frequency resource is used for transmission of the second downlink channel or signal and the third downlink channel or signal.

[0543] In some embodiments, the second time-frequency resource is used for transmission of the second downlink channel or signal;

[0544] The first indication information is used for determining that the second time-frequency resource is used for transmission of the second downlink channel or signal and / or the third downlink channel or signal, including:

[0545] In a case where the first indication information indicates that the second time-frequency resource is used for transmission of the third downlink channel or signal, the second time-frequency resource is used for transmission of the second downlink channel or signal and the third downlink channel or signal; or, in a case where the first indication information does not indicate that the second time-frequency resource is used for transmission of the third downlink channel or signal or there is no first indication information, the second time-frequency resource is used for transmission of the second downlink channel or signal.

[0546] In some embodiments, the second time-frequency resource is used for transmission of the third downlink channel or signal;

[0547] The first indication information is used to determine that the second time-frequency resource is used to transmit the second downlink channel or signal and / or the third downlink channel or signal, including:

[0548] In a case where the first indication information indicates that the second time-frequency resource is used to transmit the second downlink channel or signal, the second time-frequency resource is used to transmit the second downlink channel or signal and the third downlink channel or signal; or in a case where the first indication information does not indicate that the second time-frequency resource is used to transmit the second downlink channel or signal or there is no first indication information, the second time-frequency resource is used to transmit the third downlink channel or signal.

[0549] In some embodiments, the first downlink channel or signal is used to carry the first indication information.

[0550] In some embodiments, the second downlink channel or signal or the third downlink channel or signal is used to carry the first indication information, and the first indication information is used to determine that the second time-frequency resource is used to transmit the second downlink channel or signal and / or the third downlink channel or signal, including:

[0551] In a case where the first indication information carried in the downlink channel or signal transmitted on the second time-frequency resource indicates a first value, the second time-frequency resource is used to transmit the second downlink channel or signal; or in a case where the first indication information carried in the downlink channel or signal transmitted on the second time-frequency resource indicates a second value, the second time-frequency resource is used to transmit the third downlink channel or signal.

[0552] In some embodiments, the first downlink channel or signal corresponds to first scrambling information or second scrambling information; wherein,

[0553] In a case where the first downlink channel or signal corresponds to the first scrambling information, the second time-frequency resource is used to transmit the second downlink channel or signal; or in a case where the first downlink channel or signal corresponds to the second scrambling information, the second time-frequency resource is used to transmit the third downlink channel or signal.

[0554] In some embodiments, the second downlink channel or signal corresponds to first scrambling information, and the third downlink channel or signal corresponds to second scrambling information;

[0555] In a case where the downlink channel or signal transmitted on the second time-frequency resource corresponds to the first scrambling information, the second time-frequency resource is used to transmit the second downlink channel or signal; or in a case where the downlink channel or signal transmitted on the second time-frequency resource corresponds to the second scrambling information, the second time-frequency resource is used to transmit the third downlink channel or signal.

[0556] In some embodiments, the second downlink channel or signal corresponds to a first search space set, and the third downlink channel or signal corresponds to a second search space set; in a case where the second time-frequency resource corresponds to the first search space set, the second time-frequency resource is used for transmission of the second downlink channel or signal; or, in a case where the second time-frequency resource corresponds to the second search space set, the second time-frequency resource is used for transmission of the third downlink channel or signal.

[0557] In some embodiments, the second communication unit 2601 is further configured to: transmit the second downlink channel or signal on the second time-frequency resource; and / or, transmit the third downlink channel or signal on the second time-frequency resource.

[0558] In some embodiments, the second downlink channel or signal is used for transmission of a paging message, and / or the third downlink channel or signal is used for transmission of a system message.

[0559] In some embodiments, the second downlink channel or signal is used for transmission of a paging message, including: the second downlink channel or signal is used for carrying a first downlink control information (DCI), the first DCI being used for scheduling transmission of the paging message; or, the second downlink channel or signal is used for carrying a second DCI, the second DCI being used for indicating whether to receive the paging message; or, the second downlink channel or signal is used for carrying the paging message.

[0560] In some embodiments, the second communication unit 2601 is further configured to, in a case where the second downlink channel or signal is used for carrying the second DCI, include one or more of:

[0561] In a case where the second DCI is transmitted on the second time-frequency resource and indicates to receive the paging message, transmit a first DCI on a third time-frequency resource; in a case where the second DCI is transmitted on the second time-frequency resource and indicates not to receive the paging message or the second DCI does not indicate to receive the paging message, do not transmit the first DCI on the third time-frequency resource; in a case where the second DCI is not transmitted on the second time-frequency resource, do not transmit the first DCI on the third time-frequency resource; wherein the first DCI is used for scheduling transmission of the paging message.

[0562] In some embodiments, the third time-frequency resource is determined according to second indication information; wherein the second indication information is carried in the first downlink channel or signal, or the second indication information is carried in the second downlink channel or signal.

[0563] In some embodiments, the first DCI is further used to indicate whether to receive the system message; or the second DCI is further used to indicate whether to receive the system message.

[0564] In some embodiments, the second communication unit 2601 is further configured to, in a case that the first DCI or the second DCI indicates to receive the system message, send a third DCI, wherein the third DCI is used to schedule transmission of the system message.

[0565] In some embodiments, the third downlink channel or signal is used to transmit a system message, including:

[0566] The third downlink channel or signal is used to carry a third DCI, the third DCI is used to schedule transmission of the system message; or the third downlink channel or signal is used to carry a fourth DCI, the fourth DCI is used to indicate whether to receive the system message; or the third downlink channel or signal is used to carry the system message.

[0567] In some embodiments, the second communication unit 2601 is further configured to, in a case that the third downlink channel or signal is used to carry the fourth DCI, include one or more of:

[0568] In a case that the fourth DCI is sent on the second time-frequency resource and the fourth DCI indicates to receive the system message, send a third DCI on a fourth time-frequency resource;

[0569] In a case that the fourth DCI is sent on the second time-frequency resource and the fourth DCI indicates not to receive the system message or the fourth DCI does not indicate to receive the system message, do not send the third DCI on the fourth time-frequency resource;

[0570] In a case that the fourth DCI is not sent on the second time-frequency resource, do not send the third DCI on the fourth time-frequency resource;

[0571] The third DCI is used to schedule transmission of the system message.

[0572] In some embodiments, the fourth time-frequency resource is determined according to third indication information; wherein the third indication information is carried in the first downlink channel or signal, or the third indication information is carried in the third downlink channel or signal.

[0573] In some embodiments, the third DCI is further used to indicate whether to receive the paging message; or the fourth DCI is further used to indicate whether to receive the paging message.

[0574] In some embodiments, the second communication unit 2601 is further configured to, in a case that the third DCI or the fourth DCI indicates receiving the paging message, send a first DCI, wherein the first DCI is used for scheduling transmission of the paging message.

[0575] In some embodiments, the first downlink channel or signal is used for determining the second time-frequency resource, including: the first downlink channel or signal carrying fourth indication information, the fourth indication information being used for determining the second time-frequency resource.

[0576] In some embodiments, the fourth indication information is used for indicating one or more of the following information:

[0577] a time domain position of the second time-frequency resource; a frequency domain position of the second time-frequency resource; a period of the second time-frequency resource; an offset of the second time-frequency resource relative to the first time-frequency resource; a number of time domain units included in the second time-frequency resource; a number of frequency domain units included in the second time-frequency resource.

[0578] In some embodiments, the first downlink channel or signal is used for determining the second time-frequency resource, including: the first time-frequency resource being used for determining the second time-frequency resource.

[0579] In some embodiments, the first time-frequency resource is used for determining the second time-frequency resource, including: a time domain position of the first time-frequency resource being used for determining a time domain position of the second time-frequency resource; and / or, a frequency domain position of the first time-frequency resource being used for determining a frequency domain position of the second time-frequency resource.

[0580] In some embodiments, the second communication unit 2601 is further configured to receive, on a fifth time-frequency resource, a first uplink channel or signal, the first uplink channel or signal being used for requesting transmission of a system message of the first cell.

[0581] In some embodiments, the fifth time-frequency resource is determined according to fifth indication information.

[0582] In some embodiments, the fifth indication information is used for indicating one or more of the following information:

[0583] a time domain position of the fifth time-frequency resource; a frequency domain position of the fifth time-frequency resource; a period of the fifth time-frequency resource; an offset of the fifth time-frequency resource relative to the first time-frequency resource; a number of time domain units included in the fifth time-frequency resource; a number of frequency domain units included in the fifth time-frequency resource.

[0584] In some embodiments, the fifth indication information is carried in the first downlink channel or signal; or,

[0585] In a case where the second time-frequency resource is not used for transmitting the third downlink channel or signal, the fifth indication information is carried in the first downlink channel or signal.

[0586] In some embodiments, a time domain position of the fifth time-frequency resource is determined according to a time domain position of the first time-frequency resource; and / or, a frequency domain position of the fifth time-frequency resource is determined according to a frequency domain position of the first time-frequency resource.

[0587] In some embodiments, the first downlink channel or signal comprises a synchronization signal.

[0588] In some embodiments, the first downlink channel or signal is used for carrying one of the following: a master information block (MIB), a first system information block (SIB), the MIB and the first SIB.

[0589] In some embodiments, the first SIB comprises the most basic system configuration information in the first cell; and / or, the first SIB comprises paging configuration information in the first cell.

[0590] In some embodiments, the first downlink channel or signal is used for acquiring one or more of the following: a cell identity, system time information, downlink synchronization.

[0591] In the embodiments of the present application, the second communication unit in the network device can be implemented by a receiver in the network device.

[0592] Those skilled in the art should understand that the above description of the terminal device or the network device in the embodiments of the present application can be understood with reference to the description of the wireless communication method in the embodiments of the present application.

[0593] FIG. 27 is a schematic structural diagram of a communication device 2700 provided in the embodiments of the present application. The communication device can be a terminal device or a network device. The communication device 2700 shown in FIG. 27 comprises a processor 2710, which can call and run a computer program from a memory to implement the method in the embodiments of the present application.

[0594] Optionally, as shown in FIG. 27, the communication device 2700 can further comprise a memory 2720. The processor 2710 can call and run a computer program from the memory 2720 to implement the method in the embodiments of the present application.

[0595] The memory 2720 can be a separate device independent of the processor 2710, or can be integrated in the processor 2710.

[0596] Optionally, as shown in FIG. 27, the communication device 2700 can further include a transceiver 2730, which can be controlled by the processor 2710 to communicate with other devices, specifically, to send information or data to other devices, or to receive information or data sent by other devices.

[0597] The transceiver 2730 can include a transmitter and a receiver. The transceiver 2730 can further include an antenna, and the number of antennas can be one or more.

[0598] Optionally, the communication device 2700 can be specifically a network device of the embodiments of the present application, and the communication device 2700 can implement the corresponding processes in the various methods of the embodiments of the present application performed by the network device. For brevity, details are not described herein.

[0599] Optionally, the communication device 2700 can be specifically a mobile terminal / terminal device of the embodiments of the present application, and the communication device 2700 can implement the corresponding processes in the various methods of the embodiments of the present application performed by the mobile terminal / terminal device. For brevity, details are not described herein.

[0600] FIG. 28 is a schematic structural diagram of a chip according to an embodiment of the present application. The chip 2800 shown in FIG. 28 includes a processor 2810, which can call and run a computer program from a memory to implement the method in the embodiments of the present application.

[0601] Optionally, as shown in FIG. 28, the chip 2800 can further include a memory 2820. The processor 2810 can call and run a computer program from the memory 2820 to implement the method in the embodiments of the present application.

[0602] The memory 2820 can be a separate device independent of the processor 2810, or can be integrated in the processor 2810.

[0603] Optionally, the chip 2800 can further include an input interface 2830. The processor 2810 can control the input interface 2830 to communicate with other devices or chips, specifically, to obtain information or data sent by other devices or chips.

[0604] Optionally, the chip 2800 can further include an output interface 2840. The processor 2810 can control the output interface 2840 to communicate with other devices or chips, specifically, to output information or data to other devices or chips.

[0605] Optionally, the chip can be applied to a network device in the embodiments of the present application, and the chip can implement the corresponding processes in the various methods of the embodiments of the present application performed by the network device. For brevity, details are not described herein.

[0606] 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 procedures implemented by the mobile terminal / terminal device in various methods of the embodiments of the present application. For brevity, details are not described herein.

[0607] It should be understood that the chip mentioned in the embodiments of the present application can also be referred to as a system chip, a system chip, a chip system or a system on chip, etc.

[0608] FIG. 29 is a schematic block diagram of a communication system 2900 provided by the embodiments of the present application. As shown in FIG. 29, the communication system 2900 includes a terminal device 2910 and a network device 2920.

[0609] The terminal device 2910 can be used to implement the corresponding functions implemented by the terminal device in the above methods, and the network device 2920 can be used to implement the corresponding functions implemented by the network device in the above methods. For brevity, details are not described herein.

[0610] It should be understood that the processor of the embodiments of the present application can be an integrated circuit chip having a processing capability of a signal. In the implementation process, each step of the above method embodiments can be completed by integrated logic circuits or instructions in the form of software in the processor. The processor mentioned above can be a general processor, a digital signal processor (Digital Signal Processor, DSP), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), a field programmable gate array (Field Programmable Gate Array, FPGA) or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component. Each method, step and logic block disclosed in the embodiments of the present application can be implemented or executed. The general processor can be a microprocessor or the processor can be any conventional processor. The steps of the method disclosed in conjunction with the embodiments of the present application can be directly embodied as a hardware coding processor for execution, or a combination of hardware and software modules in the coding processor for execution. The software module can be located in a random access memory, a flash memory, a read only memory, a programmable read only memory or an electrically erasable programmable memory, a register, etc. The storage medium in the art. The storage medium is located in the memory, and the processor reads the information in the memory, and combines the hardware to complete the steps of the above method.

[0611] It is to be understood that the memory in the embodiments of the present application can be a volatile memory or a nonvolatile memory, or can include both volatile and nonvolatile memory. Among them, the nonvolatile memory can be a read-only memory (Read-Only Memory, ROM), a programmable read-only memory (Programmable ROM, PROM), an erasable programmable read-only memory (Erasable PROM, EPROM), an electrically erasable programmable read-only memory (Electrically EPROM, EEPROM) or a flash memory. The volatile memory can be a random access memory (Random Access Memory, RAM) used as an external cache. By way of example, but not limitation, many forms of RAM are available, such as static random access memory (Static RAM, SRAM), dynamic random access memory (Dynamic RAM, DRAM), synchronous dynamic random access memory (Synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (Double Data Rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (Enhanced SDRAM, ESDRAM), synchronous link dynamic random access memory (Synchlink DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DR RAM). It should be noted that the memory of the system and method described herein is intended to include, but not limited to, these and any other suitable types of memory.

[0612] It should be understood that the above-mentioned memory is exemplary but not limiting, for example, the memory in the embodiments of the present application can also be static random access memory (static RAM, SRAM), dynamic random access memory (dynamic RAM, DRAM), synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous link dynamic random access memory (synch link DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DR RAM) and the like. That is, the memory in the embodiments of the present application is intended to include, but not limited to, these and any other suitable types of memory.

[0613] The embodiment of the present application further provides a computer readable storage medium for storing the computer program.

[0614] Optionally, the computer readable storage medium can be applied to the network device in the embodiment of the present application, and the computer program makes the computer execute the corresponding process realized by the network device in the various methods of the embodiment of the present application, which will not be repeated here for the sake of brevity.

[0615] Optionally, the computer readable storage medium can be applied to the mobile terminal / terminal device in the embodiment of the present application, and the computer program makes the computer execute the corresponding process realized by the mobile terminal / terminal device in the various methods of the embodiment of the present application, which will not be repeated here for the sake of brevity.

[0616] The embodiment of the present application further provides a computer program product comprising computer program instructions.

[0617] Optionally, the computer program product can be applied to the network device in the embodiment of the present application, and the computer program instructions make the computer execute the corresponding process realized by the network device in the various methods of the embodiment of the present application, which will not be repeated here for the sake of brevity.

[0618] Optionally, the computer program product can be applied to the mobile terminal / terminal device in the embodiment of the present application, and the computer program instructions make the computer execute the corresponding process realized by the mobile terminal / terminal device in the various methods of the embodiment of the present application, which will not be repeated here for the sake of brevity.

[0619] The embodiment of the present application further provides a computer program.

[0620] Optionally, the computer program can be applied to the network device in the embodiment of the present application, and when the computer program runs on the computer, makes the computer execute the corresponding process realized by the network device in the various methods of the embodiment of the present application, which will not be repeated here for the sake of brevity.

[0621] Optionally, the computer program can be applied to the mobile terminal / terminal device in the embodiment of the present application, and when the computer program runs on the computer, makes the computer execute the corresponding process realized by the mobile terminal / terminal device in the various methods of the embodiment of the present application, which will not be repeated here for the sake of brevity.

[0622] Those skilled in the art can clearly understand that the units and algorithm steps of each example described in combination with the embodiments disclosed herein can be realized by electronic hardware or a combination of computer software and electronic hardware. Whether the functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the present application.

[0623] Those skilled in the art can clearly understand that, for the convenience and brevity of the description, the specific working processes of the above-described system, device and unit can refer to the corresponding processes in the foregoing method embodiments, which will not be repeated here.

[0624] In several embodiments provided in the present application, it should be understood that the disclosed system, device and method can be implemented in other ways. For example, the above-described device embodiments are merely schematic, for example, the division of the units is only a logical function division, and actual implementation can have another division manner, for example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the units shown or discussed can be indirect coupling or communication connection through some interfaces, devices or units, which can be electrical, mechanical or other forms.

[0625] The units described as separate components can or can not be physically separated, and the components shown as units can or can not be physical units, that is, they can be located in one place, or can be distributed on multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the embodiment.

[0626] In addition, each functional unit in each embodiment of the present application can be integrated into a processing unit, or each unit can exist physically independently, or two or more units can be integrated into one unit.

[0627] If the functions are implemented in the form of software function units and sold or used as independent products, they can be stored in a computer readable storage medium. Based on this understanding, the technical solutions of the present application or the parts of the technical solutions that essentially contribute to the prior art or the parts of the technical solutions can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes a plurality of instructions for causing 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 methods described in the various embodiments of the present application. The aforementioned storage medium includes a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and various media that can store program codes.

[0628] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of changes or replacements within the technical scope disclosed in the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A method of wireless communication, the method comprising: The method is performed by a terminal device, and the method comprises: receiving a first downlink channel or signal on a first time-frequency resource of a first cell, the first downlink channel or signal being used to determine a second time-frequency resource, the second time-frequency resource being used to transmit a second downlink channel or signal and / or a third downlink channel or signal; determining that the second time-frequency resource is used to transmit the second downlink channel or signal and / or the third downlink channel or signal.

2. The method of claim 1, wherein, The determination that the second time-frequency resource is used to transmit the second downlink channel or signal and / or the third downlink channel or signal comprises: determining, according to first indication information, that the second time-frequency resource is used to transmit the second downlink channel or signal and / or the third downlink channel or signal.

3. The method of claim 2, wherein, The first indication information is used to indicate one of: the second time-frequency resource is used to transmit the second downlink channel or signal; the second time-frequency resource is used to transmit the third downlink channel or signal; the second time-frequency resource is used to transmit the second downlink channel or signal and the third downlink channel or signal; whether the second time-frequency resource is used to transmit the second downlink channel or signal; whether the second time-frequency resource is used to transmit the third downlink channel or signal; the first cell is in an energy saving mode or the first cell is in an abnormal mode; the first cell is in a non-energy saving mode or the first cell is in a normal mode.

4. The method according to claim 2 or 3, characterized in that, In a case where the first indication information indicates that the second time-frequency resource is used to transmit the second downlink channel or signal, the second time-frequency resource is used to transmit the second downlink channel or signal; or, In a case where the first indication information indicates that the second time-frequency resource is used to transmit the third downlink channel or signal, the second time-frequency resource is used to transmit the third downlink channel or signal; or, In a case where the first indication information indicates that the second time-frequency resource is used to transmit the second downlink channel or signal and the third downlink channel or signal, the second time-frequency resource is used to transmit the second downlink channel or signal and the third downlink channel or signal; or, In a case where the first indication information indicates that the first cell is in an energy saving mode or the first cell is in an abnormal mode, the second time-frequency resource is used to transmit the second downlink channel or signal; or, In a case where the first indication information indicates that the first cell is in a non-energy saving mode or the first cell is in a normal mode, the second time-frequency resource is used to transmit the third downlink channel or signal; or, In a case where the first indication information indicates that the first cell is in a non-energy saving mode or the first cell is in a normal mode, the second time-frequency resource is used to transmit the second downlink channel or signal and the third downlink channel or signal.

5. The method according to claim 2 or 3, characterized in that, the second time-frequency resource is used to transmit the second downlink channel or signal; The determination that the second time-frequency resource is used to transmit the second downlink channel or signal and / or the third downlink channel or signal comprises: determining, according to first indication information, that the second time-frequency resource is used to transmit the second downlink channel or signal and / or the third downlink channel or signal. The first indication information is used to indicate one of: the second time-frequency resource is used to transmit the second downlink channel or signal; the second time-frequency resource is used to transmit the third downlink channel or signal; the second time-frequency resource is used to transmit the second downlink channel or signal and the third downlink channel or signal; whether the second time-frequency resource is used to transmit the second downlink channel or signal; whether the second time-frequency resource is used to transmit the third downlink channel or signal; the first cell is in an energy saving mode or the first cell is in an abnormal mode; the first cell is in a non-energy saving mode or the first cell is in a normal mode. In a case where the first indication information indicates that the second time-frequency resource is used to transmit the second downlink channel or signal, the second time-frequency resource is used to transmit the second downlink channel or signal; or, In a case where the first indication information indicates that the second time-frequency resource is used to transmit the third downlink channel or signal, the second time-frequency resource is used to transmit the third downlink channel or signal; or, In a case where the first indication information indicates that the second time-frequency resource is used to transmit the second downlink channel or signal and the third downlink channel or signal, the second time-frequency resource is used to transmit the second downlink channel or signal and the third downlink channel or signal; or, In a case where the first indication information indicates that the first cell is in an energy saving mode or the first cell is in an abnormal mode, the second time-frequency resource is used to transmit the second downlink channel or signal; or, In a case where the first indication information indicates that the first cell is in a non-energy saving mode or the first cell is in a normal mode, the second time-frequency resource is used to transmit the third downlink channel or signal; or, In a case where the first indication information indicates that the first cell is in a non-energy saving mode or the first cell is in a normal mode, the second time-frequency resource is used to transmit the second downlink channel or signal and the third downlink channel or signal. in a case where the first indication information indicates that the second time-frequency resource is used for transmission of the third downlink channel or signal, determining that the second time-frequency resource is used for transmission of the second downlink channel or signal and the third downlink channel or signal; or in a case where the first indication information does not indicate that the second time-frequency resource is used for transmission of the third downlink channel or signal or there is no first indication information, determining that the second time-frequency resource is used for transmission of the third downlink channel or signal.

6. The method according to claim 2 or 3, characterized in that, the second time-frequency resource is used for transmission of the third downlink channel or signal; the determining that the second time-frequency resource is used for transmission of the second downlink channel or signal and / or the third downlink channel or signal according to the first indication information comprises: in a case where the first indication information indicates that the second time-frequency resource is used for transmission of the second downlink channel or signal, determining that the second time-frequency resource is used for transmission of the second downlink channel or signal and the third downlink channel or signal; or in a case where the first indication information does not indicate that the second time-frequency resource is used for transmission of the second downlink channel or signal or there is no first indication information, determining that the second time-frequency resource is used for transmission of the third downlink channel or signal.

7. The method according to any one of claims 2 to 6, characterized in that, the first downlink channel or signal is used to carry the first indication information.

8. The method of claim 2 or 3, wherein, the second downlink channel or signal or the third downlink channel or signal is used to carry the first indication information, and the determining that the second time-frequency resource is used for transmission of the second downlink channel or signal and / or the third downlink channel or signal according to the first indication information comprises: in a case where the first indication information carried in the downlink channel or signal transmitted on the second time-frequency resource indicates a first value, determining that the second time-frequency resource is used for transmission of the second downlink channel or signal; or in a case where the first indication information carried in the downlink channel or signal transmitted on the second time-frequency resource indicates a second value, determining that the second time-frequency resource is used for transmission of the third downlink channel or signal.

9. The method of claim 1, wherein, the first downlink channel or signal corresponds to first scrambling code information or second scrambling code information, and the determining that the second time-frequency resource is used for transmission of the second downlink channel or signal and / or the third downlink channel or signal comprises: in a case where the first downlink channel or signal is detected according to the first scrambling code information, determining that the second time-frequency resource is used for transmission of the second downlink channel or signal; or in a case where the first downlink channel or signal is detected according to the second scrambling code information, determining that the second time-frequency resource is used for transmission of the third downlink channel or signal.

10. The method of claim 1, wherein, the second downlink channel or signal corresponds to third scrambling code information, and the third downlink channel or signal corresponds to fourth scrambling code information, and the determining that the second time-frequency resource is used for transmission of the second downlink channel or signal and / or the third downlink channel or signal comprises: in a case where a downlink channel or signal transmitted on the second time-frequency resource is detected according to the first scrambling code information, determining that the second time-frequency resource is used for transmission of the second downlink channel or signal; or in a case where a downlink channel or signal transmitted on the second time-frequency resource is detected according to the third scrambling code information, determining that the second time-frequency resource is used for transmission of the third downlink channel or signal. In a case where the second time-frequency resource is detected to transmit a second downlink channel or signal according to the second scrambling code information, it is determined that the second time-frequency resource is used to transmit the third downlink channel or signal.

11. The method of claim 1, wherein, The second downlink channel or signal corresponds to a first search space set, and the third downlink channel or signal corresponds to a second search space set. The determination that the second time-frequency resource is used to transmit the second downlink channel or signal and / or the third downlink channel or signal includes: In a case where the second time-frequency resource corresponds to the first search space set, it is determined that the second time-frequency resource is used to transmit the second downlink channel or signal; or In a case where the second time-frequency resource corresponds to the second search space set, it is determined that the second time-frequency resource is used to transmit the third downlink channel or signal.

12. The method according to any one of claims 1 to 11, characterized in that, The method further includes: listening for or receiving the second downlink channel or signal on the second time-frequency resource; and / or listening for or receiving the third downlink channel or signal on the second time-frequency resource.

13. The method according to any one of claims 1 to 12, characterized in that, The second downlink channel or signal is used to transmit a paging message, and / or the third downlink channel or signal is used to transmit a system message.

14. The method of claim 13, wherein, The second downlink channel or signal is used to transmit a paging message, including: The second downlink channel or signal is used to carry a first downlink control information (DCI), and the first DCI is used to schedule transmission of the paging message; or The second downlink channel or signal is used to carry a second DCI, and the second DCI is used to indicate whether to receive the paging message; or The second downlink channel or signal is used to carry the paging message.

15. The method of claim 14, wherein, In a case where the second downlink channel or signal is used to carry the second DCI, the method further includes one or more of: in a case where the second DCI is received on the second time-frequency resource and the second DCI indicates to receive the paging message, listening for a first DCI on a third time-frequency resource; in a case where the second DCI is received on the second time-frequency resource and the second DCI indicates not to receive the paging message or the second DCI does not indicate to receive the paging message, not listening for the first DCI on the third time-frequency resource; in a case where the second DCI is not received on the second time-frequency resource, not listening for the first DCI on the third time-frequency resource; The first DCI is used to schedule transmission of the paging message.

16. The method of claim 15, wherein, The third time-frequency resource is determined according to second indication information; wherein the second indication information is carried in the first downlink channel or signal, or The second indication information is carried in the second downlink channel or signal.

17. The method according to any one of claims 14 to 16, characterized in that, The first DCI is further used to indicate whether to receive the system message; or The second DCI is further used to indicate whether to receive the system message.

18. The method of claim 17, wherein, In a case where the first DCI or the second DCI indicates to receive the system message, the method further includes: listening for a third DCI, wherein the third DCI is used to schedule transmission of the system message.

19. The method according to any one of claims 13 to 18, characterized in that, The third downlink channel or signal is used to transmit a system message, including: The third downlink channel or signal is used to carry a third DCI, and the third DCI is used to schedule transmission of the system message; or The third downlink channel or signal is used to carry a fourth DCI, and the fourth DCI is used to indicate whether to receive the system message; or The third downlink channel or signal is used to carry the system message.

20. The method of claim 19, wherein, In the case where the third downlink channel or signal is used to carry the fourth DCI, the method further comprises one or more of the following: In the case where the fourth DCI is received on the second time-frequency resource and the fourth DCI indicates to receive the system message, listening for a third DCI on a fourth time-frequency resource; In the case where the fourth DCI is received on the second time-frequency resource and the fourth DCI indicates not to receive the system message or the fourth DCI does not indicate to receive the system message, not listening for the third DCI on the fourth time-frequency resource; In the case where the fourth DCI is not received on the second time-frequency resource, not listening for the third DCI on the fourth time-frequency resource; The third DCI is used to schedule transmission of the system message.

21. The method of claim 20, wherein, The fourth time-frequency resource is determined according to third indication information; wherein the third indication information is carried in the first downlink channel or signal, or The third indication information is carried in the third downlink channel or signal.

22. The method according to any one of claims 19 to 21, characterized in that, The third DCI is further used to indicate whether to receive the paging message; or The fourth DCI is further used to indicate whether to receive the paging message.

23. The method of claim 22, wherein, In the case where the third DCI or the fourth DCI indicates to receive the paging message, the method further comprises: Listening for a first DCI, wherein the first DCI is used to schedule transmission of the paging message.

24. The method according to any one of claims 1 to 23, characterized in that, The first downlink channel or signal is used to determine a second time-frequency resource, comprising: Fourth indication information is carried in the first downlink channel or signal, and the fourth indication information is used to determine the second time-frequency resource.

25. The method of claim 24, wherein, The fourth indication information is used to indicate one or more of the following information: A time domain position of the second time-frequency resource; A frequency domain position of the second time-frequency resource; A period of the second time-frequency resource; An offset of the second time-frequency resource relative to the first time-frequency resource; A number of time domain units included in the second time-frequency resource; A number of frequency domain units included in the second time-frequency resource.

26. The method of any one of claims 1 to 25, wherein, The first downlink channel or signal is used to determine a second time-frequency resource, comprising that the first time-frequency resource is used to determine the second time-frequency resource.

27. The method of claim 26, wherein, The first time-frequency resource is used to determine the second time-frequency resource, comprising: The time domain position of the first time-frequency resource is used to determine the time domain position of the second time-frequency resource; and / or The frequency domain position of the first time-frequency resource is used to determine the frequency domain position of the second time-frequency resource.

28. The method of any one of claims 1 to 27, wherein, The method further comprises: Transmitting a first uplink channel or signal on a fifth time-frequency resource, and the first uplink channel or signal is used to request transmission of a system message of the first cell.

29. The method of claim 28, wherein, The fifth time-frequency resource is determined according to fifth indication information.

30. The method of claim 29, wherein, The fifth indication information is used to indicate one or more of the following information: a time domain position of the fifth time-frequency resource; a frequency domain position of the fifth time-frequency resource; a periodicity of the fifth time-frequency resource; an offset of the fifth time-frequency resource relative to the first time-frequency resource; a quantity of time domain units included in the fifth time-frequency resource; a quantity of frequency domain units included in the fifth time-frequency resource.

31. The method of claim 29 or 30, wherein, the fifth indication information is carried in the first downlink channel or signal; or in a case where the second time-frequency resource is not used for transmission of the third downlink channel or signal, the fifth indication information is carried in the first downlink channel or signal.

32. The method according to any one of claims 28 to 31, characterized in that, the time domain position of the fifth time-frequency resource is determined according to the time domain position of the first time-frequency resource; and / or the frequency domain position of the fifth time-frequency resource is determined according to the frequency domain position of the first time-frequency resource.

33. The method of any one of claims 1 to 32, wherein, the first downlink channel or signal comprises a synchronization signal.

34. The method of any one of claims 1 to 33, wherein, the first downlink channel or signal is used for carrying one of the following: a master information block (MIB), a first system information block (SIB), the MIB and the first SIB.

35. The method of claim 34, wherein, the first SIB comprises most basic system configuration information in the first cell; and / or the first SIB comprises paging configuration information in the first cell.

36. The method of any one of claims 1 to 35, wherein, the first downlink channel or signal is used for acquiring one or more of the following: a cell identity, system time information, downlink synchronization.

37. The method of any one of claims 1 to 36, wherein, the terminal device is in one of the following states: an idle state, an inactive state and a connected state.

38. A method of wireless communication, the method comprising: the method is performed by a network device, and the method comprises: transmitting, on a first time-frequency resource of a first cell, a first downlink channel or signal, the first downlink channel or signal being used for determining a second time-frequency resource, the second time-frequency resource being used for transmission of a second downlink channel or signal and / or a third downlink channel or signal.

39. The method of claim 38, wherein, first indication information is used for determining that the second time-frequency resource is used for transmission of the second downlink channel or signal and / or the third downlink channel or signal.

40. The method of claim 39, wherein, the first indication information is used for indicating one of the following: the second time-frequency resource is used for transmission of the second downlink channel or signal; the second time-frequency resource is used for transmission of the third downlink channel or signal; the second time-frequency resource is used for transmission of the second downlink channel or signal and the third downlink channel or signal; whether the second time-frequency resource is used for transmission of the second downlink channel or signal; whether the second time-frequency resource is used for transmission of the third downlink channel or signal; the first cell is in an energy saving mode or the first cell is in an abnormal mode; the first cell is in a non-energy saving mode or the first cell is in a normal mode.

41. The method of claim 39 or 40, wherein, in a case where the first indication information indicates that the second time-frequency resource is used for transmission of the second downlink channel or signal, the second time-frequency resource is used for transmission of the second downlink channel or signal; or in a case where the first indication information indicates that the second time-frequency resource is used for transmission of the third downlink channel or signal, the second time-frequency resource is used for transmission of the third downlink channel or signal; or in a case where the first indication information indicates that the second time-frequency resource is used for transmission of the second downlink channel or signal and the third In a case where the second time-frequency resource is used for transmission of the second downlink channel or signal and the third downlink channel or signal, the first indication information is used for determining that the second time-frequency resource is used for transmission of the second downlink channel or signal and / or the third downlink channel or signal, including: In a case where the first indication information indicates that the second time-frequency resource is used for transmission of the third downlink channel or signal, the second time-frequency resource is used for transmission of the second downlink channel or signal and the third downlink channel or signal; or In a case where the first indication information does not indicate that the second time-frequency resource is used for transmission of the third downlink channel or signal or there is no first indication information, the second time-frequency resource is used for transmission of the second downlink channel or signal. In a case where the first indication information indicates that the second time-frequency resource is used for transmission of the second downlink channel or signal, the second time-frequency resource is used for transmission of the second downlink channel or signal and the third downlink channel or signal; or 42. The method of claim 39 or 40, wherein, In a case where the first indication information does not indicate that the second time-frequency resource is used for transmission of the second downlink channel or signal or there is no first indication information, the second time-frequency resource is used for transmission of the third downlink channel or signal. The first downlink channel or signal is used for carrying the first indication information. The second downlink channel or signal or the third downlink channel or signal is used for carrying the first indication information, and the first indication information is used for determining that the second time-frequency resource is used for transmission of the second downlink channel or signal and / or the third downlink channel or signal, including: In a case where the first indication information carried in the downlink channel or signal transmitted on the second time-frequency resource indicates a first value, the second time-frequency resource is used for transmission of the second downlink channel or signal; or 43. The method of claim 39 or 40, wherein, In a case where the first indication information carried in the downlink channel or signal transmitted on the second time-frequency resource indicates a second value, the second time-frequency resource is used for transmission of the third downlink channel or signal. ​ ​ ​ 44. The method of any one of claims 39 to 45, wherein, ​ 45. The method of claim 39 or 40, wherein, ​ ​ ​ 46. The method of claim 38, wherein, The first downlink channel or signal corresponds to first scrambling code information or second scrambling code information; wherein In a case where the first downlink channel or signal corresponds to the first scrambling code information, the second time-frequency resource is used for transmission of the second downlink channel or signal; or In a case where the first downlink channel or signal corresponds to the second scrambling code information, the second time-frequency resource is used for transmission of the third downlink channel or signal.

47. The method of claim 38, wherein, The second downlink channel or signal corresponds to first scrambling code information, and the third downlink channel or signal corresponds to second scrambling code information; In a case where a downlink channel or signal transmitted on the second time-frequency resource corresponds to the first scrambling code information, the second time-frequency resource is used for transmission of the second downlink channel or signal; or In a case where a downlink channel or signal transmitted on the second time-frequency resource corresponds to the second scrambling code information, the second time-frequency resource is used for transmission of the third downlink channel or signal.

48. The method of claim 38, wherein, The second downlink channel or signal corresponds to a first search space set, and the third downlink channel or signal corresponds to a second search space set; In a case where the second time-frequency resource corresponds to the first search space set, the second time-frequency resource is used for transmission of the second downlink channel or signal; or In a case where the second time-frequency resource corresponds to the second search space set, the second time-frequency resource is used for transmission of the third downlink channel or signal.

49. The method of any one of claims 38 to 48, wherein, The method further comprises: sending the second downlink channel or signal on the second time-frequency resource; and / or sending the third downlink channel or signal on the second time-frequency resource.

50. The method of any one of claims 38 to 49, wherein, The second downlink channel or signal is used for transmission of a paging message, and / or the third downlink channel or signal is used for transmission of a system message.

51. The method of claim 50, wherein, The second downlink channel or signal is used for transmission of a paging message, comprising: The second downlink channel or signal is used for carrying first downlink control information (DCI), and the first DCI is used for scheduling transmission of the paging message; or The second downlink channel or signal is used for carrying second DCI, and the second DCI is used for indicating whether to receive the paging message; or The second downlink channel or signal is used for carrying the paging message.

52. The method of claim 51, wherein, In a case where the second downlink channel or signal is used for carrying the second DCI, the method further comprises one or more of the following: In a case where the second DCI is sent on the second time-frequency resource and the second DCI indicates to receive the paging message, first DCI is sent on a third time-frequency resource; In a case where the second DCI is sent on the second time-frequency resource and the second DCI indicates not to receive the paging message or the second DCI does not indicate to receive the paging message, the first DCI is not sent on the third time-frequency resource; In a case where the second DCI is not sent on the second time-frequency resource, the first DCI is not sent on the third time-frequency resource; The third time-frequency resource is determined according to second indication information; wherein the second indication information is carried in the first downlink channel or signal, or 53. The method of claim 52, wherein, ​ The second indication information is carried in the second downlink channel or signal.

54. The method of any one of claims 51 to 53, wherein, The first DCI is further used for indicating whether the system message is received; or The second DCI is further used for indicating whether the system message is received.

55. The method of claim 54, wherein, In a case where the first DCI or the second DCI indicates that the system message is received, the method further includes: sending third DCI, wherein the third DCI is used for scheduling transmission of the system message.

56. The method of any one of claims 50 to 55, wherein, The third downlink channel or signal is used for transmitting a system message, including: The third downlink channel or signal is used for carrying third DCI, wherein the third DCI is used for scheduling transmission of the system message; or The third downlink channel or signal is used for carrying fourth DCI, wherein the fourth DCI is used for indicating whether the system message is received; or The third downlink channel or signal is used for carrying the system message.

57. The method of claim 56, wherein, In a case where the third downlink channel or signal is used for carrying the fourth DCI, the method further includes one or more of the following: In a case where the fourth DCI is sent on the second time-frequency resource and indicates that the system message is received, third DCI is sent on a fourth time-frequency resource; In a case where the fourth DCI is sent on the second time-frequency resource and indicates that the system message is not received or the fourth DCI does not indicate that the system message is received, the third DCI is not sent on the fourth time-frequency resource; In a case where the fourth DCI is not sent on the second time-frequency resource, the third DCI is not sent on the fourth time-frequency resource; The third DCI is used for scheduling transmission of the system message.

58. The method of claim 57, wherein, The fourth time-frequency resource is determined according to third indication information; wherein the third indication information is carried in the first downlink channel or signal, or The third indication information is carried in the third downlink channel or signal.

59. The method of any one of claims 56 to 58, wherein, The third DCI is further used for indicating whether the paging message is received; or The fourth DCI is further used for indicating whether the paging message is received.

60. The method of claim 59, wherein, In a case where the third DCI or the fourth DCI indicates that the paging message is received, the method further includes: sending first DCI, wherein the first DCI is used for scheduling transmission of the paging message.

61. The method of any one of claims 38 to 60, wherein, The first downlink channel or signal is used for determining a second time-frequency resource, including: Fourth indication information is carried in the first downlink channel or signal, wherein the fourth indication information is used for determining the second time-frequency resource.

62. The method of claim 61, wherein, The fourth indication information is used for indicating one or more of the following information: a time domain position of the second time-frequency resource; a frequency domain position of the second time-frequency resource; a period of the second time-frequency resource; an offset of the second time-frequency resource relative to the first time-frequency resource; a number of time domain units included in the second time-frequency resource; a number of frequency domain units included in the second time-frequency resource.

63. The method of any one of claims 38 to 62, wherein, The first downlink channel or signal is used for determining a second time-frequency resource, including that the first time-frequency resource is used for determining the second time-frequency resource.

64. The method of claim 63, wherein, The first time-frequency resource is used for determining the second time-frequency resource, including: a time domain position of the first time-frequency resource is used to determine a time domain position of the second time-frequency resource; and / or, a frequency domain position of the first time-frequency resource is used to determine a frequency domain position of the second time-frequency resource.

65. The method of any one of claims 38 to 64, wherein, The method further includes: receiving a first uplink channel or signal on a fifth time-frequency resource, the first uplink channel or signal being used for requesting transmission of a system message of the first cell.

66. The method of claim 65, wherein, The fifth time-frequency resource is determined according to fifth indication information.

67. The method of claim 66, wherein, The fifth indication information is used to indicate one or more of the following: a time domain position of the fifth time-frequency resource; a frequency domain position of the fifth time-frequency resource; a period of the fifth time-frequency resource; an offset of the fifth time-frequency resource relative to the first time-frequency resource; a number of time domain units included in the fifth time-frequency resource; a number of frequency domain units included in the fifth time-frequency resource.

68. The method of claim 66 or 67, wherein, The fifth indication information is carried in the first downlink channel or signal; or, The fifth indication information is carried in the first downlink channel or signal in a case that the second time-frequency resource is not used for transmission of the third downlink channel or signal.

69. The method of any one of claims 65 to 68, wherein, a time domain position of the first time-frequency resource is used to determine a time domain position of the second time-frequency resource; and / or, a frequency domain position of the first time-frequency resource is used to determine a frequency domain position of the second time-frequency resource.

70. The method of any one of claims 38 to 69, wherein, The first downlink channel or signal includes a synchronization signal.

71. The method of any one of claims 38 to 70, wherein, The first downlink channel or signal is used to carry one of the following: a master information block (MIB), a first system information block (SIB), the MIB and the first SIB.

72. The method of claim 71, wherein, The first SIB includes most basic system configuration information in the first cell; and / or, The first SIB includes paging configuration information in the first cell.

73. The method of any one of claims 38 to 72, wherein, The first downlink channel or signal is used to acquire one or more of the following: a cell identity, system time information, downlink synchronization.

74. A terminal device, comprising: Comprising: a first communication unit, configured to receive a first downlink channel or signal on a first time-frequency resource of a first cell, the first downlink channel or signal being used to determine a second time-frequency resource, the second time-frequency resource being used for transmission of a second downlink channel or signal and / or a third downlink channel or signal; a determination unit, configured to determine that the second time-frequency resource is used for transmission of the second downlink channel or signal and / or the third downlink channel or signal.

75. A network device, comprising: Comprising: a second communication unit, configured to send a first downlink channel or signal on a first time-frequency resource of a first cell, the first downlink channel or signal being used to determine a second time-frequency resource, the second time-frequency resource being used for transmission of a second downlink channel or signal and / or a third downlink channel or signal.

76. A terminal device, comprising: Comprising: a transceiver, a processor and a memory, the memory being used to store a computer program, the processor being used to invoke and run the computer program stored in the memory to cooperate with the transceiver to perform the method according to any one of claims 1 to 37.

77. A network device, comprising: Comprising: a transceiver, a processor and a memory, the memory being used to store a computer program, the processor being used to invoke and run the computer program stored in the memory to cooperate with the transceiver to perform the method according to any one of claims 38 to 73.

78. A chip, comprising: Comprising: A processor for calling and running a computer program from a memory such that a device in which the chip is installed performs the method of any one of claims 1 to 37, or performs the method of any one of claims 38 to 73.

79. A computer-readable storage medium, comprising, A computer program for storing a computer program that causes a computer to perform the method of any one of claims 1 to 37, or to perform the method of any one of claims 38 to 73.

80. A computer program product, characterised in that, Computer program instructions comprising a computer program that causes a computer to perform the method of any one of claims 1 to 37, or to perform the method of any one of claims 38 to 73.

81. A computer program, characterized in that, The computer program causes a computer to perform the method of any one of claims 1 to 37, or to perform the method of any one of claims 38 to 73.

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