Communication methods and communication devices

Abstract

Provided are communication methods and communication devices. A method comprises: a first terminal device determines a first time window, the first time window being used for receiving first system information.

Description

Communication methods and communication equipment Technical Field

[0001] This application relates to the field of communication technology, and more specifically, to a communication method and a communication device. Background Technology

[0002] In some communication systems, network devices periodically transmit system information to terminal devices, which can lead to high energy consumption during transmission. Reducing this energy consumption is a technical problem that needs to be addressed. Summary of the Invention

[0003] This application provides a communication method and a communication device. The various aspects covered by this application are described below.

[0004] In a first aspect, a communication method is provided, the method comprising: a first terminal device determining a first time window, the first time window being used to receive first system information.

[0005] Secondly, a communication method is provided, the method comprising: a network device determining a first time window, the first time window being used to transmit first system information.

[0006] Thirdly, a communication device is provided, which is a terminal device, and the communication device includes: a first determining unit, configured to determine a first time window, wherein the first time window is used to receive first system information.

[0007] Fourthly, a communication device is provided, which is a network device, and the communication device includes: a first determining unit, configured to determine a first time window, the first time window being used to transmit first system information.

[0008] Fifthly, a communication device is provided, including a transceiver, a memory, and a processor, wherein the memory is used to store a program, the processor is used to invoke the program in the memory, and to control the transceiver to receive or transmit signals so that the communication device performs the method as described in the first or second aspect.

[0009] A sixth aspect provides an apparatus including a processor for calling a program from a memory to cause the apparatus to perform the method as described in the first or second aspect.

[0010] In a seventh aspect, a chip is provided, including a processor for calling a program from memory, causing a device on which the chip is mounted to perform the method as described in the first or second aspect.

[0011] Eighthly, a computer-readable storage medium is provided having a program stored thereon that causes a computer to perform the method as described in the first or second aspect.

[0012] A ninth aspect provides a computer program product, characterized in that it includes a program that causes a computer to perform the method as described in the first or second aspect.

[0013] In a tenth aspect, a computer program is provided that causes a computer to perform the method as described in the first or second aspect.

[0014] In this embodiment, a first time window is introduced for the transmission of system information. The network device determines the first time window and transmits the first system information within the first time window. Correspondingly, the first terminal device determines the first time window and receives the first system information within the first time window. In this way, the energy consumption for transmitting the first system information can be reduced. Attached Figure Description

[0015] Figure 1 is a schematic diagram of the communication system used in the embodiments of this application.

[0016] Figure 2 is a schematic flowchart of the communication method provided in an embodiment of this application.

[0017] Figure 3 is an example diagram of determining a first time window provided in an embodiment of this application.

[0018] Figure 4 is an example diagram of determining the first time window provided in another embodiment of this application.

[0019] Figure 5 is an example diagram of determining the first time window provided in another embodiment of this application.

[0020] Figure 6 is an example diagram of determining the first time window provided in another embodiment of this application.

[0021] Figure 7 is an example diagram of determining the first time window provided in another embodiment of this application.

[0022] Figure 8 is an example diagram of determining the first time window provided in another embodiment of this application.

[0023] Figure 9 is an example diagram of determining the first time window provided in another embodiment.

[0024] Figure 10 is an example diagram of determining the first time window provided in another embodiment.

[0025] Figure 11 is a schematic diagram of the structure of a communication device provided in an embodiment of this application.

[0026] Figure 12 is a schematic diagram of the structure of a communication device provided in another embodiment of this application.

[0027] Figure 13 is a schematic diagram of the structure of the communication device provided in an embodiment of this application. Detailed Implementation

[0028] The technical solutions in this application will now be described with reference to the accompanying drawings.

[0029] Communication system

[0030] The embodiments of this application can be applied to various communication systems. For example, the embodiments of this application can be applied to Global System for Mobile Communication (GSM), Code Division Multiple Access (CDMA), Wideband Code Division Multiple Access (WCDMA), General Packet Radio Service (GPRS), Long Term Evolution (LTE), Advanced Long Term Evolution (LTE-A), New Radio (NR), evolution systems of NR, LTE-based access to unlicensed spectrum (LTE-U), NR-based access to unlicensed spectrum (NR-U), Universal Mobile Telecommunications System (UMTS), Wireless Local Area Networks (WLAN), Wireless Fidelity (WiFi), and 5th-generation (5G) systems. The embodiments of this application can also be applied to other communication systems, such as future communication systems. This future communication system could be, for example, a sixth-generation mobile communication system or a satellite communication system.

[0031] Traditional communication systems support a limited number of connections and are easy to implement. However, with the development of communication technology, communication systems can now support not only traditional cellular communication but also one or more other types of communication. For example, a communication system can support one or more of the following communication methods: device-to-device (D2D) communication, machine-to-machine (M2M) communication, machine-type communication (MTC), vehicle-to-vehicle (V2V) communication, and vehicle-to-everything (V2X) communication. The embodiments of this application can also be applied to communication systems that support the above-mentioned communication methods.

[0032] The communication system in this application embodiment can be applied to carrier aggregation (CA) scenarios, dual connectivity (DC) scenarios, and standalone (SA) network deployment scenarios.

[0033] The communication system in this application embodiment can be applied to unlicensed spectrum. This unlicensed spectrum can also be considered a shared spectrum. Alternatively, the communication system in this application embodiment can also be applied to licensed spectrum. This licensed spectrum can also be considered a dedicated spectrum.

[0034] The embodiments of this application can be applied to terrestrial networks (TN) systems as well as non-terrestrial networks (NTN) systems. As an example, the NTN system can include an NR-based NTN system and an Internet of Things (IoT)-based NTN system.

[0035] A communication system may include one or more terminal devices. The terminal devices mentioned in the embodiments of this application may also be referred to as user equipment (UE), access terminal, user unit, user station, mobile station, mobile station (MS), mobile terminal (MT), remote station, remote terminal, mobile device, user terminal, terminal, wireless communication equipment, user agent, or user device, etc.

[0036] In some embodiments, the terminal device may be a station (ST) in a WLAN. In some embodiments, the terminal device may also be a cellular phone, cordless phone, session initiation protocol (SIP) phone, wireless local loop (WLL) station, personal digital assistant (PDA) device, handheld device with wireless communication capabilities, computing device or other processing device connected to a wireless modem, in-vehicle device, wearable device, terminal device in a next-generation communication system (e.g., NR system), or terminal device in a future evolved public land mobile network (PLMN) network, etc.

[0037] In some embodiments, the terminal device may be a device that provides voice and / or data connectivity to the user. For example, the terminal device may be a handheld device, an in-vehicle device, etc., with wireless connectivity. As some specific examples, the terminal device may be a mobile phone, tablet, laptop, PDA, mobile internet device (MID), wearable device, virtual reality (VR) device, augmented reality (AR) device, wireless terminal in industrial control, wireless terminal in self-driving, wireless terminal in remote medical surgery, wireless terminal in smart grid, wireless terminal in transportation safety, wireless terminal in smart city, wireless terminal in smart home, etc.

[0038] In some embodiments, the terminal device may be deployed on land. For example, the terminal device may be deployed indoors or outdoors. In some embodiments, the terminal device may be deployed on water, such as on a ship. In some embodiments, the terminal device may be deployed in the air, such as on an airplane, balloon, or satellite.

[0039] In addition to terminal devices, the communication system may also include one or more network devices. In this embodiment, the network device can be a device for communicating with the terminal device; this network device may also be referred to as an access network device or a radio access network device. For example, the network device may be a base station. In this embodiment, the network device may refer to an access network (RAN) node (or device) that connects the terminal device to the wireless network. Access network equipment can broadly encompass various names listed below, or be interchangeable with them, such as: NodeB, evolved NodeB (eNB), next-generation NodeB (gNB), relay station, access point, transmitting and receiving point (TRP), transmitting point (TP), master MeNB, secondary SeNB, multi-mode radio (MSR) node, home base station, network controller, access node, wireless node, access point (AP), transmission node, transceiver node, baseband unit (BBU), remote radio unit (RRU), active antenna unit (AAU), remote radio head (RRH), central unit (CU), distributed unit (DU), positioning node, etc. Base stations can be macro base stations, micro base stations, relay nodes, donor nodes, or similar entities, or combinations thereof. A base station can also refer to a communication module, modem, or chip installed within the aforementioned equipment or apparatus. A base station can also be a mobile switching center, or a device that performs base station functions in device-to-device (D2D), vehicle-to-everything (V2X), and machine-to-machine (M2M) communications, a network-side device in a 6G network, or a device performing base station functions in future communication systems. Base stations can support networks using the same or different access technologies. The embodiments of this application do not limit the specific technologies or device forms used in the network equipment.

[0040] Base stations can be fixed or mobile. For example, a helicopter or drone can be configured to act as a mobile base station, and one or more cells can move depending on the location of the mobile base station. In other examples, a helicopter or drone can be configured as a device to communicate with another base station.

[0041] In some deployments, the network device in this application embodiment may refer to a CU or a DU, or the network device may include both a CU and a DU. The gNB may also include an AAU.

[0042] By way of example and not limitation, in the embodiments of this application, the network device may have mobility characteristics; for example, the network device may be a mobile device. In some embodiments of this application, the network device may be satellite-based or space-based, that is, the network device is installed on a satellite or flying equipment. In some embodiments of this application, the network device may also be a base station installed in locations such as land or water.

[0043] In this embodiment, the network device can provide services to a cell. The terminal device communicates with the network device through the transmission resources (e.g., frequency domain resources, or spectrum resources) used by the cell. The cell can be the cell corresponding to the network device (e.g., a base station). The cell can belong to a macro base station or to a base station corresponding to a small cell. The small cell can include: metro cell, micro cell, pico cell, femto cell, etc. These small cells have the characteristics of small coverage area and low transmission power, and are suitable for providing high-speed data transmission services.

[0044] For example, Figure 1 is a schematic diagram of the architecture of a communication system provided in an embodiment of this application. As shown in Figure 1, the communication system 100 may include a network device 110, which may be a device that communicates with a terminal device 120 (or a communication terminal, terminal). The network device 110 can provide communication coverage for a specific geographical area and can communicate with terminal devices located within that coverage area.

[0045] Figure 1 illustrates an exemplary network device and two terminal devices. In some embodiments of this application, the communication system 100 may include multiple network devices and each network device may include other numbers of terminal devices within its coverage area. This application does not limit this aspect.

[0046] In some embodiments of this application, the wireless communication system shown in FIG1 may also include other network entities such as a mobility management entity (MME) and an access and mobility management function (AMF), but this application does not limit this.

[0047] It should be understood that devices with communication functions in the network / system of this application embodiment can be referred to as communication devices. Taking the communication system 100 shown in FIG1 as an example, the communication devices may include network devices 110 and terminal devices 120 with communication functions. Network devices 110 and terminal devices 120 can be the specific devices described above, which will not be repeated here. The communication devices may also include other devices in the communication system 100, such as network controllers, mobility management entities, and other network entities, which are not limited in this application embodiment.

[0048] Transmission of system information

[0049] In some communication systems (e.g., traditional NR systems), network devices (e.g., gNBs) periodically send system information to terminal devices (e.g., UEs). This system information can be used by idle terminal devices to access the network. However, since the network device cannot predict the number of idle terminal devices that might need to read the system information, some periodically transmitted system information may be wasted. Furthermore, because the network device needs to maintain the transmission of system information, it cannot enter a deep sleep mode. Therefore, the energy consumption of the network device for transmitting system information is relatively high, which is detrimental to the future operation of cellular systems and to the environment, hindering the reduction of carbon emissions and mitigation of global warming. In conclusion, reducing the energy consumption of system information transmission is a technical problem that needs to be solved.

[0050] This application embodiment introduces a first time window for the transmission of system information. The network device determines the first time window and transmits first system information within it. Correspondingly, the first terminal device determines the first time window and receives the first system information within it. This approach reduces the energy consumption of transmitting the first system information.

[0051] The communication method provided in the embodiments of this application will be described in detail below with reference to Figure 2.

[0052] Figure 2 is a schematic flowchart of a communication method provided in an embodiment of this application. The method in Figure 2 is described from the perspective of a first terminal device. The first terminal device in Figure 2 can be the terminal device 120 mentioned above. This first terminal device can be, for example, a UE.

[0053] Referring to Figure 2, the communication method provided in this application embodiment may include the following step S210.

[0054] In step S210, the first terminal device determines the first time window.

[0055] The first time window here can be used for the first terminal device to receive the first system information. The first system information mentioned in this embodiment can be system information block 1 (SIB1). Correspondingly, the network device can also determine the first time window, which can be used for the network device to transmit or broadcast the first system information. That is, the network device can transmit the first system information within the first time window, and the terminal device can receive the first system information within the first time window. In this way, the network device only needs to transmit the first system information within a specific time period, without systematically transmitting it, thereby reducing the energy consumption of transmitting the first system information.

[0056] The first system information can be transmitted based on the first request information from the terminal device. That is, the network device only transmits the first system information within the first time window after receiving the first request information from the terminal device. If the network device does not receive the first request information from the terminal device, it may not transmit the first system information.

[0057] In this embodiment, the cell where the network device systematically transmits the first system information is located can be called a normal cell. The cell where the network device transmits the first system information within the first time window can be called a network energy saving state (NES) cell. Normal cells can be used for initial access, while NES cells allow capable terminal devices (supporting NES capabilities) to access. When a terminal device wants to access an NES cell, it can send a first request message to request the first system information. After receiving the first request message, the NES cell can begin transmitting the first system information. That is, the NES cell only transmits the first system information when needed. The network device can broadcast the first system information based on the first request message sent by the terminal device. If the network device receives the first request message from the terminal device, it broadcasts the first system information. If the network device does not receive the first request message from the terminal device, it does not broadcast the first system information.

[0058] This application involves two types of terminal devices: a terminal device that sends a first request message to a network device (a first type of terminal device) and a terminal device that does not send a first request message to the network (a second type of terminal device). If the first type of terminal device sends a first request message to the network device, the network device can broadcast the first system information within a time window (i.e., a first time window). Therefore, the second type of terminal device can read the first system information without sending a request message, which not only saves the energy consumption of the network device but also saves the energy consumption of the second type of terminal device. In this application embodiment, the first terminal device mentioned in step S210 can be either a first type of terminal device or a second type of terminal device. Of course, in the following description, in some cases, the first terminal device refers to the first type of terminal device; in other cases, the first terminal device refers to the second type of terminal device.

[0059] As mentioned earlier, network devices can transmit first system information within a first time window. In some implementations, the network device can indicate the transmission status of the first system information (whether the first system information is being transmitted) to the first terminal device. The network device can also send second information to the first terminal device. This second information can be used to indicate that the network device is transmitting the first system information. Based on this second information, the first terminal device can directly know the transmission status of the first system information.

[0060] The second information can be carried within the first synchronization signal block (SSB). For example, the second information can be carried within the master information block (MIB) of the first SSB, the physical broadcast channel (PBCH), or the subcarrier spacing parameter. The subcarrier spacing parameter can be, for example, the Kssb.

[0061] Referring to Figure 3, in the example shown in Figure 3, the network device indicates the broadcast status of SIB1 via SSB. Within the first time window shown in Figure 3, the SSB indicates that SIB1 is being broadcast. Outside the first time window shown in Figure 3, the SSB indicates that SIB1 is not being broadcast.

[0062] As can be seen from the description of step S210, a first time window is introduced for the transmission of system information. The network device determines the first time window and transmits the first system information within the first time window. Correspondingly, the first terminal device determines the first time window and receives the first system information within the first time window. In this way, the energy consumption for transmitting the first system information can be reduced.

[0063] Step S210 mentions that the first terminal device determines the first time window. The following describes how the first terminal device determines the first time window using a specific example.

[0064] In some implementations, the first time window may be determined based on one or more of the following: a first random access channel occasion (RO), a first random access response (RAR), a second time window, a time domain offset, a periodic time interval, and a first synchronization signal block.

[0065] The first RO can be used to transmit the first request information. Alternatively, the first request information can be carried within the first RO. The first request information can be in the form of a physical random access channel (PRACH). The first terminal device can send the first request information within the first RO.

[0066] The first RAR is associated with the first RO. The first RAR can be understood as feedback information for the first request message. After the first terminal device sends the first request message within the first RO, it can receive the feedback information for the first request message within a second time window. That is, the second time window can be used for the first terminal device to receive the first RAR. Therefore, the second time window is associated with the first RO and / or the first RAR. The second time window can also be called the RAR window. As a concrete example, see Figure 4. The UE sends the first request message to the network device, and this request message is transmitted within the RO. Afterwards, the UE receives the feedback information for the first request message within the RAR window associated with the RO. In some cases, the first time window can be determined based on the second time window mentioned here.

[0067] A time-domain offset can be understood as a time-domain offset relative to a certain time-domain position. For example, a time-domain offset can be a time-domain offset relative to the start or end position of a second time window. In some cases, the first time window can be determined based on the time-domain offset.

[0068] The periodic time interval can be, for example, 80 milliseconds. In some cases, the first time window can be determined based on the periodic time interval. For example, the duration of the first time window can be equal to the duration of one or more periodic time intervals. As another example, the time-domain start position of the first time window can be aligned with the time-domain boundary positions of the periodic time intervals. As a concrete example, as shown in Figure 3, the time-domain start position of the first time window is aligned with the start position of the fourth 80-millisecond periodic time interval. Furthermore, the duration of the first time window is equal to the duration of three 80-millisecond periodic time intervals.

[0069] The first SSB can be used to indicate that a network device is transmitting first system information. A network device can use the first SSB to indicate that first system information is being transmitted. If, within a certain time window, a first terminal device receives a first SSB indicating that a network device is transmitting first system information, the first terminal device can determine that time window as the first time window. Therefore, in some cases, the first time window can be determined based on the first SSB.

[0070] The first RO, first RAR, time offset, and periodic time interval mentioned above, or one or more of these, can be determined based on the first information. The first information may include one or more of the following: pre-configuration information, network device configuration information, and protocol predefined information. In some cases, in addition to configuring the first RO, first RAR, time offset, and one or more of the periodic time interval, the first information can also configure the duration of the first time window. Configuring these parameters all at once using the first information can save signaling overhead.

[0071] The first information here can be information sent by the first cell. Alternatively, the first information here can also be information sent by the second cell. The first cell here can be understood as the cell that sends the first system information. The second cell here can be understood as the cell that does not send the first system information.

[0072] The following section provides a detailed explanation, using specific examples, on how to determine the starting position of the first time window in the time domain and how to determine the duration of the first time window.

[0073] The time-domain start position of the first time window can be determined based on one or more of the time-domain position of the second time window, the time-domain offset, and the time-domain position of the periodic time interval. The second time window can be used for the first terminal device to receive the first RAR. The time-domain position of the second time window may include the time-domain start position and / or end position of the second time window. In the embodiments of this application, the time-domain start position of the first time window is referred to as the first time-domain position.

[0074] In some implementations, the first time-domain position can be determined based on the start or end position of the second time window in the time domain, as well as the time-domain offset mentioned above. In this implementation, the first time-domain position can be related to a periodic time interval. Alternatively, the first time-domain position can also be independent of the periodic time interval.

[0075] In some embodiments, the first time-domain position can be the time-domain position corresponding to the time-domain offset after taking the aforementioned time-domain offset from the time-domain start or end position of the second time window. In this case, the first time-domain position is independent of the periodic time interval. The first time-domain position does not need to be aligned with the time-domain boundary position of the periodic time interval. For example, referring to Figure 5, the first time-domain position is the time-domain position corresponding to the time-domain start position of the RAR window after taking one time-domain offset. The first time-domain position is not aligned with the time-domain boundary position of the 80-millisecond time interval.

[0076] In other embodiments, the first time-domain position may be determined based on the time-domain start or end position of the second time window, the time-domain offset, and the time-domain boundary position of the periodic time interval. In this case, the first time-domain position is related to the periodic time interval.

[0077] The first time-domain position can be equal to the time-domain start position of the first time interval in the periodic time interval. Here, the first time interval can be determined based on the time-domain start or end position of the second time window, and the time-domain offset.

[0078] In some cases, the first time interval can be the time interval containing the second time-domain position within a periodic time interval. Here, the second time-domain position can be understood as the time-domain position corresponding to the start or end position of the second time window after a time-domain offset. For example, referring to Figure 4, the start position of the RAR window in the time domain is t0, and the time-domain position corresponding to the start position of the RAR window after a time-domain offset is t1 (the second time-domain position). The first time interval can be the second 80-millisecond periodic time interval containing t1 in Figure 4. In this case, the first time-domain position can be equal to the start position of the second 80-millisecond periodic time interval in the time domain (the position corresponding to t2 in Figure 4).

[0079] In other cases, the first time interval can be the next time interval after the second time-domain position within a periodic time interval. For example, still referring to Figure 4, the time-domain starting position of the RAR window is t0, and the time-domain position corresponding to the starting position of the RAR window after a time-domain offset is t1 (the second time-domain position). The first time interval can be the next time interval after the second 80-millisecond periodic time interval in Figure 4, where t1 is located. In this case, the first time-domain position can be equal to the time-domain starting position of the third 80-millisecond periodic time interval (the position corresponding to t3 in Figure 4).

[0080] The above describes how to determine the time-domain start position of the first time window. The following describes how to determine the duration of the first time window.

[0081] In some implementations, the duration of the first time window can be determined based on the network device's configuration information. The duration of the first time window determined based on the network device's configuration information may be independent of the aforementioned periodic time intervals. Alternatively, the duration of the first time window determined based on the network device's configuration information may be related to the aforementioned periodic time intervals. The duration of the first time window may be equal to the duration of one or more of the aforementioned periodic time intervals.

[0082] Step S210 mentions that the first terminal device determines a first time window, which can be used for the first terminal device to receive first system information. In order to better receive the first system information, the first terminal device can also monitor the first system information for a period of time within the first time window.

[0083] The first terminal device can also monitor the information of the first system within a third time window. This third time window is part of the first time window. The duration of the third time window can be greater than or equal to the first duration. The first duration can be determined based on predefined protocol information and / or pre-configuration information. The first terminal device here can be either the first type of terminal device mentioned earlier, or the second type of terminal device mentioned earlier.

[0084] As mentioned earlier, a type-one terminal device can send a first request message to a network device to request the network device to transmit first system information. Normally, upon receiving the first request message, the network device will transmit the first system information within a first time window, allowing the type-one terminal device to receive the first system information within that window. However, in certain situations, such as poor communication quality, the network device may not receive the first request message from the type-one terminal device, or the type-one terminal device may not receive the first system information from the network device. This will ultimately prevent the type-one terminal device from receiving the first system information within the first time window. In this case, the type-one terminal device can resend the first request message to the network device, requesting the network device to transmit the first system information again. The type-one terminal device can send the first request message to the network device multiple times until it receives the first system information transmitted by the network device.

[0085] When the first terminal device is not the terminal device transmitting the first request information (i.e., when the first terminal device is a type II terminal device), one or more of the aforementioned first RO, first RAR, second time window, time domain offset, periodic time interval, and first SSB can be used to determine one or more first time windows. The first terminal device can monitor at least one of the one or more first time windows. For example, the first terminal device can monitor a type 0 physical downlink control channel within at least one of the one or more first time windows.

[0086] If the one or more first time windows include N overlapping time windows (N is a positive integer greater than or equal to 2), then at least one time window mentioned herein may include the N time windows. That is, if the one or more first time windows include N overlapping time windows, then the first terminal device can monitor the N overlapping time windows.

[0087] As mentioned earlier, the first type of terminal device can send a first request message to the network device to request the network device to transmit first system information. Normally, after receiving the first request message, the network device will transmit the first system information within a first time window, thus ensuring that the second type of terminal device receives the first system information within at least one time window. However, in some cases, such as when communication quality is poor, the network device may not receive the first request message sent by the first type of terminal device, or the second type of terminal device may not receive the first system information sent by the network device. This will ultimately result in the second type of terminal device failing to receive the first system information within at least one time window. In this case, the second type of terminal device can send a second request message to the network device to request the network device to transmit the first system information. The second type of terminal device can send the second request message to the network device multiple times until it receives the first system information transmitted by the network device. The second request message sent by the second type of terminal device can be carried in the first RO mentioned earlier.

[0088] The aforementioned time window can be determined from one or more first time windows based on a first time. This first time may include one or more of the following: the time when the first terminal device selects the first time window to be monitored; the transmission time of the first SSB.

[0089] At least one time window may include one or more of the following: the first time window in which the first time in one or more first time windows is located; the next first time window in which the first time in one or more first time windows is located.

[0090] In some implementations, the first time may include the time when the first terminal device selects the first time window to be monitored. That is, at least one time window can be determined from one or more first time windows based on the time when the first terminal device selects the first time window to be monitored.

[0091] In some cases, the first time window selected by the first terminal device for monitoring can be a time window that has not yet started. As shown in Figure 6, the UE selects the first time window to be monitored at time t0, and the first time window at time t0 is a time window that has not yet started. At least one first time window can be the first time window at time t0, i.e., the "selected time window" shown in Figure 6.

[0092] In other cases, the first time window in which the first terminal device selects the first time window to be monitored can also be a time window that has started but not yet ended. For example, referring to Figure 7, the UE selects the first time window to be monitored at time t0, and the first time window in which time t0 is located is a time window that has started but not yet ended. At least one first time window can be the first time window in which time t0 is located, i.e., the "selected time window" shown in Figure 7.

[0093] In this implementation, if at least one time window determined from one or more first time windows based on a first time overlaps with other first time windows, the terminal device can monitor the other first time windows, as shown in Figure 8.

[0094] In some implementations, the first time may include the transmission time of the first SSB. That is, at least one time window can be determined from one or more first time windows based on the transmission time of the first SSB. Here, the first SSB can be used to indicate that first system information is being transmitted. For example, referring to Figure 9, if the UE receives an SSB indicating that SIB1 is being transmitted from the network device at time t0, the UE can select the time window corresponding to time t0. Furthermore, the UE can monitor the type0-PDCCH within the time window corresponding to time t0.

[0095] As mentioned above, the first terminal device can monitor at least one of one or more first time windows. If these one or more first time windows include N overlapping time windows (N is a positive integer greater than or equal to 2), then the first terminal device can monitor the N overlapping time windows. In these cases, all N time windows may include the first time.

[0096] For example, referring to Figure 10, the UE receives an SSB indicating that SIB1 is being transmitted from the network device at time t0. Time t0 corresponds to two time windows, and these two time windows overlap in the time domain. The UE can monitor type0-PDCCH within these two time windows.

[0097] In some implementations, the first system information mentioned in step S210 can be used to configure uplink transmission resources. In some cases, the uplink transmission resources configured by the first system information may overlap with the first RO in the time domain and / or frequency domain. In this case, the first terminal device can determine that the uplink transmission resources configured by the first system information are invalid. That is, when the first RO collides with the uplink transmission resources configured by the first system information, the first terminal device can consider the uplink transmission resources to be invalid resources, thereby ensuring that the transmission of the first terminal device on the first RO is not affected.

[0098] For example, the uplink transmission resources here may include a physical uplink shared channel (PUSCH). A PUSCH may include a configured grant physical uplink shared channel (CG-PUSCH) and / or a message A physical uplink shared channel (MsgA-PUSCH). As a concrete example, after the UE obtains system information SIB1, SIB1 may configure MsgA-PUSCH or CG-PUSCH. When the configured MsgA-PUSCH or CG-PUSCH overlaps with the first RO in the time or frequency domain, the UE considers MsgA-PUSCH or CG-PUSCH invalid. This ensures that the transmission of other UEs on the first RO is not affected.

[0099] For example, the uplink transmission resources here may include a second RO. The second RO can be used to initiate initial access or request second system information. The type of the second system information is different from the first system information. As a specific example, the network device configures a first RO for requesting system information SIB1 using the first information. When the UE receives system message SIB1, the network device configures a second RO within SIB1. The second RO can be used to initiate initial access or to request other system information besides SIB1. Therefore, when the first RO and the second RO overlap in the time domain or frequency domain, the UE can determine that the second RO is an invalid resource.

[0100] In some cases, the first RO and the second RO overlap in the time domain and / or frequency domain, and both the first sequence used for transmission in the first RO and the second sequence used for transmission in the second RO include a third sequence. In this case, the first terminal device can perform at least one of the following actions: determine that the second RO is invalid; and / or, not transmit the third sequence in the second RO. Here, the first and second sequences can be, for example, preambles. In this way, it can also be ensured that the transmission of the first terminal device on the first RO is not affected.

[0101] As a concrete example, the network device configures a first Resource Request (RO) for requesting system information SIB1 using first information configuration, and configures one or more first preambles that can be sent within the first RO. When the UE requests system message SIB1, the UE selects a configured first preamble to send within the first RO. After the UE receives system message SIB1, the network device configures a second RO within SIB1, and configures one or more second preambles that can be sent within the second RO. The second RO can be used to initiate initial access or to request other system information besides SIB1. Then, when the first RO and the second RO overlap in the time domain or frequency domain, and a preamble belongs to one or more first preambles and one or more second preambles, the UE performs at least one of the following actions: 1) The UE determines that the second RO is an invalid resource; 2) The UE does not send the preamble in the second RO.

[0102] To facilitate a better understanding of the communication method provided in this application, a more detailed description of the communication method provided in this application will be given below with more specific examples.

[0103] Example 1

[0104] In Example 1, the network device does not systematically broadcast SIB1 information, but instead waits for a UE to request SIB1. After a UE requests SIB1, the network device can begin broadcasting SIB1 within the first time window. This significantly saves the network device's energy consumption. Furthermore, when the network device decides to broadcast SIB1 within the first time window, it also wants the broadcast SIB1 to serve not only the requesting UE, but also other UEs that did not send a request. In this case, the network device can use a MIB to notify UEs within the cell that SIB1 is being broadcast. Therefore, UEs receiving the MIB can know that SIB1 is being broadcast within the first time window. In some examples, as shown in Figure 3, the position and length of the first time window need to be aligned with the time domain boundary of an 80ms periodic time interval. The first time window begins at the time domain boundary of the 80ms periodic time interval, and its length is 80ms or a multiple of 80ms. In some examples, when an SSB indicates that the SIB1 broadcast status (being broadcast or not being broadcast) is "being broadcast," the SIB1 broadcast status should be consistent with all SSBs transmitted within the first time window.

[0105] Example 2

[0106] In Example 2, when the UE sends a request to the network device to request SIB1, the UE receives feedback from the network device. In some examples, the request takes the form of PRACH, is transmitted in a RACH timing (RO), and feedback is received in the RAR window associated with the RO. In this case, the first time window is determined based on the position, offset, and time domain boundary of the 80ms periodic time interval of the RAR window. Referring to Figure 4, the UE sends the request in the RO and receives feedback in the RAR window. Then, the UE determines the time domain start position of the first time window, which has an offset from the time domain start position of the RAR window, and the time domain start position of the first time window is located at the time domain boundary of the next 80ms periodic time interval. In some examples, the time domain start position of the first time window is not aligned with the time domain boundary of the 80ms periodic time interval. For example, the time domain start position of the first time window is directly determined by the offset from the time domain start position of the RAR window, as shown in Figure 5.

[0107] Example 3

[0108] In Example 3, the UE is a UE that does not send a request. For these UEs, the possible time window position can only be determined based on the pre-configured RACH timing (RO) used to request signal transmission, the pre-configured offset and time window length, and the pre-configured RAR window associated with the RO. If the UE needs to read SIB1, before sending a request in the RO, the UE first monitors the type0-PDCCH in one of the possible time windows. Which time window is selected can depend on the UE's implementation. The UE can choose the earliest time window that has not yet started, as shown in Figure 6, or the earliest time window that has started but has not yet ended, as shown in Figure 7. If the selected time window overlaps with another time window in the time domain, the UE can continue to monitor the type0-PDCCH in the overlapping time window, as shown in Figure 8.

[0109] Example 4

[0110] In Example 4, the UE also determines a time window based on the received SSB. For example, when the received SSB indicates that SIB1 is being broadcast, the UE determines the time window based on the received SSB. As a specific example, the UE selects a time window in which it receives an SSB, and monitors the type0-PDCCH within the selected time window, as shown in Figure 9. In some examples, as shown in Figure 10, when multiple time windows overlap in the time domain, and an SSB is received within the overlapping time windows, the UE continues to monitor the type0-PDCCH within the overlapping time windows. In some examples, when the received SSB indicates that SIB1 is not being broadcast, the UE can directly send a signal requesting SIB1 in the RO.

[0111] Example 5

[0112] For an SSB indicating the broadcast status of SIB1, the SSB can use Kssb configuration to indicate the broadcast status of SIB1. For example, when the Kssb value equals one or more predefined values, it indicates that SIB1 is being broadcast; otherwise, it indicates that SIB1 is not being broadcast. In some examples, the SSB includes a PBCH payload and uses one or more bits of the PBCH payload to indicate the broadcast status of SIB1. In some examples, the SSB uses one or more bits from the MIB to indicate the broadcast status of SIB1.

[0113] Example 6

[0114] In Example 6, a collision occurs between the first RO and the uplink transmission resource. After the UE obtains system information SIB1, SIB1 may configure uplink transmission resources, such as MsgA-PUSCH or CG-PUSCH. When the configured uplink transmission resource overlaps with the first RO in the time domain or frequency domain, the UE considers the uplink transmission resource invalid. This ensures that the transmission of other UEs on the first RO is not affected.

[0115] Example 7

[0116] In Example 7, a collision occurs between the first RO and the second RO. The network device configures a first RO for requesting system information SIB1 using first information, and configures one or more first preambles that can be sent within the first RO. When the UE requests system message SIB1, the UE selects a configured first preamble to send within the first RO. After the UE receives system message SIB1, the network device configures a second RO within SIB1, and configures one or more second preambles that can be sent within the second RO. The second RO can be used to initiate initial access or to request other system information besides SIB1. When the first RO and the second RO overlap in the time domain or frequency domain, the UE performs at least one of the following actions: 1) The UE determines that the second RO is an invalid resource; 2) When a preamble belongs to one or more first preambles and one or more second preambles, the UE does not send the preamble in the second RO.

[0117] The method embodiments of this application have been described in detail above with reference to Figures 1 to 10. The apparatus embodiments of this application will now be described in detail with reference to Figures 11 to 13. It should be understood that the descriptions of the method embodiments correspond to the descriptions of the apparatus embodiments; therefore, any parts not described in detail can be referred to the preceding method embodiments.

[0118] Figure 11 is a schematic diagram of the structure of a communication device 1100 provided in an embodiment of this application. The communication device 1100 shown in Figure 11 is a terminal device. The communication device 1100 includes a first determining unit 1110. The first determining unit 1110 is used to determine a first time window, which is used to receive first system information.

[0119] In some implementations, the first system information is transmitted based on the first request information of the terminal device.

[0120] In some implementations, the first time window is determined based on one or more of the following: a first RO for transmitting the first request information; a first RAR associated with the first RO; a second time window associated with the first RO and / or the first RAR; a time domain offset; a periodic time interval; and a first SSB for indicating that the network device is transmitting the first system information.

[0121] In some implementations, one or more of the first RO, the first RAR, the time-domain offset, and the periodic time interval are determined based on first information, and / or the duration of the first time window is determined based on first information; wherein the first information includes one or more of the following: pre-configuration information, network device configuration information, and protocol predefined information.

[0122] In some implementations, the first information is information sent by a first cell or a second cell, wherein the first cell is the cell that sends the first system information, and the second cell is not the cell that sends the first system information.

[0123] In some implementations, the time-domain start position of the first time window is determined based on one or more of the time-domain position of the second time window, the time-domain offset, and the time-domain position of the periodic time interval.

[0124] In some implementations, the second time window is used for the first terminal device to receive the first RAR.

[0125] In some implementations, the first request information is carried in the first RO, and the first RAR is the feedback information of the first request information.

[0126] In some implementations, the time-domain start position of the first time window is a first time-domain position, which is determined based on the time-domain start or end position of the second time window and the time-domain offset.

[0127] In some implementations, the first time-domain position is the time-domain position corresponding to the time-domain offset after passing through the time-domain offset from the time-domain start or end position of the second time window.

[0128] In some implementations, the first time-domain position is determined based on the time-domain start or end position of the second time window, the time-domain offset, and the time-domain boundary position of the periodic time interval.

[0129] In some implementations, the first time-domain position is equal to the time-domain start position of a first time interval in the periodic time interval, the first time interval being determined based on the time-domain start or end position of the second time window and the time-domain offset.

[0130] In some implementations, the first time interval is the time interval in which the second time domain position is located within the periodic time interval; or, the first time interval is the next time interval in which the second time domain position is located within the periodic time interval; wherein, the second time domain position is the time domain position corresponding to the time domain position after passing the time domain offset from the time domain start position or end position of the second time window.

[0131] In some implementations, the duration of the first time window is determined based on the network device's configuration information.

[0132] In some implementations, the duration of the first time window is related to the periodic time interval.

[0133] In some implementations, the duration of the first time window is equal to the duration of one or more time intervals in the periodic time intervals.

[0134] In some implementations, the device further includes: a first monitoring unit, configured to monitor the first system information within a third time window, wherein the third time window is part of the first time window, and the duration of the third time window is greater than or equal to a first duration, the first duration being determined based on protocol predefined information and / or preconfiguration information.

[0135] In some implementations, the first terminal device is a terminal device that transmits the first request information, and the first request information is carried in the first RO.

[0136] In some implementations, the device further includes: a first sending unit, configured to send the first request information to the network device if the first terminal device does not receive the first system information within the first time window.

[0137] In some implementations, the first terminal device is not the terminal device that transmits the first request information. One or more of the first RO, the first RAR, the second time window, the time domain offset, the periodic time interval, and the first SSB are used to determine one or more of the first time windows. The device further includes a second monitoring unit for monitoring at least one of the one or more first time windows.

[0138] In some implementations, the at least one time window is determined from one or more first time windows based on a first time; wherein the first time includes one or more of the following: the time when the first terminal device selects the first time window to be monitored; the transmission time of the first SSB.

[0139] In some implementations, the at least one time window includes one or more of the following: the first time window in which the first time occurs in the one or more first time windows; the next first time window in which the first time occurs in the one or more first time windows.

[0140] In some implementations, if the one or more first time windows include N overlapping time windows, then the at least one time window includes the N time windows, where N is a positive integer greater than or equal to 2.

[0141] In some implementations, all N time windows include the first time.

[0142] In some implementations, the device further includes a second sending unit, configured to send a second request message to the network device if the first terminal device does not receive the first system information within the at least one time window, the second request message being used to request the network device to transmit the first system information.

[0143] In some implementations, the second request information is carried in the first RO.

[0144] In some implementations, the device further includes: a first receiving unit, configured to receive second information sent by the network device, the second information being used to indicate that the network device is transmitting the first system information.

[0145] In some implementations, the second information is carried in the first SSB.

[0146] In some implementations, the second information is carried in the MIB, PBCH, and subcarrier spacing parameters of the first SSB.

[0147] In some implementations, the first system information is used to configure uplink transmission resources, and the device further includes: a second determining unit, used to determine that the uplink transmission resources are invalid when the uplink transmission resources overlap with the first RO in the time domain and / or frequency domain.

[0148] In some implementations, the uplink transmission resource includes PUSCH.

[0149] In some implementations, the PUSCH includes MsgA-PUSCH and / or CG-PUSCH.

[0150] In some implementations, the first system information is used to configure the second RO, the second RO is used to initiate initial access or request the second system information, the second system information is of a different type than the first system information, a first sequence is used for transmission within the first RO, a second sequence is used for transmission within the second RO, the first RO and the second RO overlap in the time domain and / or frequency domain, both the first sequence and the second sequence include a third sequence, and the device further includes: a third determining unit for determining that the second RO is invalid; and / or a third sending unit for not sending the third sequence in the second RO.

[0151] In some implementations, the first system information is SIB1.

[0152] Figure 12 is a schematic diagram of the structure of a communication device 1200 provided in an embodiment of this application. The communication device 1200 shown in Figure 12 is a network device. The communication device 1200 includes a first determining unit 1210. The first determining unit 1210 is used to determine a first time window, which is used to transmit first system information.

[0153] In some implementations, the first system information is transmitted based on the first request information of the terminal device.

[0154] In some implementations, the first time window is determined based on one or more of the following: a first RO for transmitting the first request information; a first RAR associated with the first RO; a second time window associated with the first RO and / or the first RAR; a time domain offset; a periodic time interval; and a first SSB for indicating that the network device is transmitting the first system information.

[0155] In some implementations, one or more of the first RO, the first RAR, the time-domain offset, and the periodic time interval are determined based on first information, and / or the duration of the first time window is determined based on first information; wherein the first information includes one or more of the following: pre-configuration information, network device configuration information, and protocol predefined information.

[0156] In some implementations, the first information is information sent by a first cell or a second cell, wherein the first cell is the cell that sends the first system information, and the second cell is not the cell that sends the first system information.

[0157] In some implementations, the time-domain start position of the first time window is determined based on one or more of the time-domain position of the second time window, the time-domain offset, and the time-domain position of the periodic time interval.

[0158] In some implementations, the second time window is used for the first terminal device to receive the first RAR.

[0159] In some implementations, the first request information is carried in the first RO, and the first RAR is the feedback information of the first request information.

[0160] In some implementations, the time-domain start position of the first time window is a first time-domain position, which is determined based on the time-domain start or end position of the second time window and the time-domain offset.

[0161] In some implementations, the first time-domain position is the time-domain position corresponding to the time-domain offset after passing through the time-domain offset from the time-domain start or end position of the second time window.

[0162] In some implementations, the first time-domain position is determined based on the time-domain start or end position of the second time window, the time-domain offset, and the time-domain boundary position of the periodic time interval.

[0163] In some implementations, the first time-domain position is equal to the time-domain start position of a first time interval in the periodic time interval, the first time interval being determined based on the time-domain start or end position of the second time window and the time-domain offset.

[0164] In some implementations, the first time interval is the time interval in which the second time domain position is located within the periodic time interval; or, the first time interval is the next time interval in which the second time domain position is located within the periodic time interval; wherein, the second time domain position is the time domain position corresponding to the time domain position after passing the time domain offset from the time domain start position or end position of the second time window.

[0165] In some implementations, the duration of the first time window is determined based on the network device's configuration information.

[0166] In some implementations, the duration of the first time window is related to the periodic time interval.

[0167] In some implementations, the duration of the first time window is equal to the duration of one or more time intervals in the periodic time intervals.

[0168] In some implementations, the first terminal device is a terminal device that transmits the first request information, and the first request information is carried in the first RO.

[0169] In some implementations, the device further includes: a first sending unit, configured to send second information to a first terminal device, the second information being used to indicate that the network device is transmitting the first system information.

[0170] In some implementations, the second information is carried in the first SSB.

[0171] In some implementations, the second information is carried in the MIB, PBCH, and subcarrier spacing parameters of the first SSB.

[0172] In some implementations, the first system information is SIB1.

[0173] Figure 13 is a schematic diagram of the structure of a communication device applicable to embodiments of this application. The dashed lines in Figure 13 indicate that the unit or module is optional. This device 1300 can be used to implement the methods described in the above method embodiments. Device 1300 can be a chip, a terminal device, or a network device.

[0174] Apparatus 1300 may include one or more processors 1310. The processor 1310 may support apparatus 1300 in implementing the methods described in the preceding method embodiments. The processor 1310 may be a general-purpose processor or a special-purpose processor. For example, the processor may be a central processing unit (CPU). Alternatively, the processor may be other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or any conventional processor.

[0175] The apparatus 1300 may further include one or more memories 1320. The memories 1320 store a program that can be executed by the processor 1310, causing the processor 1310 to perform the methods described in the preceding method embodiments. The memories 1320 may be independent of the processor 1310 or integrated within the processor 1310.

[0176] The device 1300 may also include a transceiver 1330. The processor 1310 can communicate with other devices or chips via the transceiver 1330. For example, the processor 1310 can send and receive data with other devices or chips via the transceiver 1330.

[0177] This application also provides a computer-readable storage medium for storing a program. This computer-readable storage medium can be applied to the communication device provided in this application, and the program causes a computer to execute the methods performed by the communication device in various embodiments of this application.

[0178] This application also provides a computer program product. The computer program product includes a program. The computer program product can be applied to the communication device provided in this application embodiment, and the program causes a computer to execute the methods performed by the communication device in various embodiments of this application.

[0179] This application also provides a computer program. This computer program can be applied to the communication device provided in this application, and causes the computer to execute the methods performed by the communication device in various embodiments of this application.

[0180] It should be understood that the terms "system" and "network" in this application can be used interchangeably. Furthermore, the terminology used in this application is only for explaining specific embodiments of the application and is not intended to limit the application. The terms "first," "second," "third," and "fourth," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish different objects, not to describe a specific order. In addition, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0181] In the embodiments of this application, the term "instruction" can be a direct instruction, an indirect instruction, or an indication of a relationship. For example, A instructing B can mean that A directly instructs B, such as B being able to obtain information through A; it can also mean that A indirectly instructs B, such as A instructing C, so B can obtain information through C; or it can mean that there is a relationship between A and B.

[0182] In the embodiments of this application, "B corresponding to A" means that B is associated with A, and B can be determined based on A. However, it should also be understood that determining B based on A does not mean that B is determined solely based on A; B can also be determined based on A and / or other information.

[0183] In the embodiments of this application, the term "correspondence" can indicate a direct or indirect correspondence between two things, or an association between two things, or a relationship such as instruction and being instructed, configuration and being configured.

[0184] In this application embodiment, "predefined" or "preconfigured" can be implemented by pre-storing corresponding codes, tables, or other means that can be used to indicate relevant information in the device (e.g., including terminal devices and network devices). This application does not limit the specific implementation method. For example, predefined can refer to what is defined in the protocol.

[0185] In this application embodiment, the "protocol" may refer to a standard protocol in the field of communication, such as the LTE protocol, the NR protocol, and related protocols applied to future communication systems. This application does not limit this.

[0186] In the embodiments of this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0187] In the various embodiments of this application, the order of the above-mentioned processes does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0188] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between apparatuses or units may be electrical, mechanical, or other forms.

[0189] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0190] In addition, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0191] In the above embodiments, implementation can be achieved entirely or partially through software, hardware, firmware, or any combination thereof. When implemented using software, it can be implemented entirely or partially in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of this application are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium that a computer can read or a data storage device such as a server or data center that integrates one or more available media. The available media may be magnetic media (e.g., floppy disks, hard disks, magnetic tapes), optical media (e.g., digital video discs, DVDs) or semiconductor media (e.g., solid-state disks, SSDs), etc.

[0192] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A communication method, characterized in that, include: The first terminal device determines a first time window, which is used to receive first system information.

2. The method according to claim 1, characterized in that, The first system information is based on the first request information transmission of the terminal device.

3. The method according to claim 1 or 2, characterized in that, The first time window is determined based on one or more of the following: The first random access channel timing RO is used to transmit the first request information; The first random access response (RAR) is associated with the first random access response (RO). A second time window is associated with the first RO and / or the first RAR; Time domain offset; Periodic time intervals; The first synchronization signal block (SSB) is used to indicate that the network device is transmitting the first system information.

4. The method according to claim 3, characterized in that, One or more of the first RO, the first RAR, the time domain offset, and the periodic time interval are determined based on the first information, and / or the duration of the first time window is determined based on the first information; The first information includes one or more of the following: pre-configuration information, network device configuration information, and protocol pre-defined information.

5. The method according to claim 4, characterized in that, The first information is information sent by a first cell or a second cell, wherein the first cell is the cell that sent the first system information, and the second cell is not the cell that sent the first system information.

6. The method according to any one of claims 3 to 5, characterized in that, The time-domain start position of the first time window is determined based on one or more of the time-domain position of the second time window, the time-domain offset, and the time-domain position of the periodic time interval.

7. The method according to claim 6, characterized in that, The second time window is used for the first terminal device to receive the first RAR.

8. The method according to claim 7, characterized in that, The first request information is carried in the first RO, and the first RAR is the feedback information of the first request information.

9. The method according to any one of claims 6 to 8, characterized in that, The time domain start position of the first time window is the first time domain position, which is determined based on the time domain start or end position of the second time window and the time domain offset.

10. The method according to claim 9, characterized in that, The first time domain position is the time domain position corresponding to the time domain offset after the time domain start or end position of the second time window.

11. The method according to claim 9, characterized in that, The first time-domain position is determined based on the time-domain start or end position of the second time window, the time-domain offset, and the time-domain boundary position of the periodic time interval.

12. The method of claim 11, wherein, The first time-domain position is equal to the time-domain start position of the first time interval in the periodic time interval, and the first time interval is determined based on the time-domain start or end position of the second time window and the time-domain offset.

13. The method according to claim 12, characterized in that: The first time interval is the time interval in which the second time-domain position is located within the periodic time interval; or, The first time interval is the next time interval in which the second time-domain position is located within the periodic time interval; Wherein, the second time domain position is the time domain position corresponding to the time domain offset after passing through the time domain offset from the time domain start position or end position of the second time window.

14. The method according to any one of claims 3 to 13, characterized in that, The duration of the first time window is determined based on the network device's configuration information.

15. The method according to claim 14, characterized in that, The duration of the first time window is related to the periodic time interval.

16. The method according to claim 15, characterized in that, The duration of the first time window is equal to the duration of one or more time intervals in the periodic time intervals.

17. The method according to any one of claims 1 to 16, characterized in that, The method further includes: The first terminal device monitors the information of the first system within a third time window. The third time window is part of the first time window, and the duration of the third time window is greater than or equal to the first duration. The first duration is determined based on protocol predefined information and / or preconfiguration information.

18. The method according to any one of claims 3 to 17, characterized in that, The first terminal device is a terminal device that transmits the first request information, and the first request information is carried in the first RO.

19. The method according to claim 18, characterized in that, The method further includes: If the first terminal device does not receive the first system information within the first time window, the first terminal device sends the first request information to the network device.

20. The method according to any one of claims 3 to 17, characterized in that, The first terminal device is not the terminal device transmitting the first request information. One or more of the following are used to determine one or more of the first time windows: the first RO, the first RAR, the second time window, the time domain offset, the periodic time interval, and the first SSB. The method further includes: The first terminal device monitors at least one of the one or more first time windows.

21. The method according to claim 20, characterized in that, The at least one time window is determined from the one or more first time windows based on a first time. The first time includes one or more of the following: The first terminal device selects the time of the first time window to be monitored; The transmission time of the first SSB.

22. The method of claim 21, wherein, The at least one time window includes one or more of the following: The first time window in which the first time is located in one or more first time windows; The next first time window of the first time window in the one or more first time windows.

23. The method according to any one of claims 20 to 22, characterized in that, If the one or more first time windows include N overlapping time windows, then the at least one time window includes the N time windows, where N is a positive integer greater than or equal to 2.

24. The method according to claim 23, characterized in that, All N time windows include the first time.

25. The method according to any one of claims 20 to 24, characterized in that, The method further includes: If the first terminal device does not receive the first system information within the at least one time window, the first terminal device sends a second request message to the network device, the second request message being used to request the network device to transmit the first system information.

26. The method according to claim 25, characterized in that, The second request information is carried in the first RO.

27. The method according to any one of claims 1 to 26, characterized in that, The method further includes: The first terminal device receives second information sent by the network device, the second information being used to indicate that the network device is transmitting the first system information.

28. The method according to claim 27, characterized in that, The second information is carried in the first SSB.

29. The method according to claim 28, characterized in that, The second information is carried in the main information block (MIB), physical broadcast channel (PBCH), and subcarrier spacing parameters of the first SSB.

30. The method according to any one of claims 3 to 17, 18 to 26, characterized in that, The first system information is used to configure uplink transmission resources, wherein the uplink transmission resources overlap with the first RO in the time domain and / or frequency domain, and the method further includes: The first terminal device determines that the uplink transmission resource is invalid.

31. The method according to claim 30, characterized in that, The uplink transmission resources include the Physical Uplink Shared Channel (PUSCH).

32. The method according to claim 31, characterized in that, The PUSCH includes the Message A Physical Uplink Shared Channel MsgA-PUSCH and / or the Configuration Grant Physical Uplink Shared Channel CG-PUSCH.

33. The method according to any one of claims 3 to 17, 18 to 26, 30 to 32, characterized in that, The first system information is used to configure the second RO, the second RO is used to initiate initial access or request the second system information, the second system information is of a different type than the first system information, a first sequence is used for transmission within the first RO, a second sequence is used for transmission within the second RO, the first RO and the second RO overlap in the time domain and / or frequency domain, and both the first sequence and the second sequence include a third sequence. The method further includes: The first terminal device determines that the second RO is invalid; and / or The first terminal device does not send the third sequence in the second RO.

34. The method according to any one of claims 1 to 33, characterized in that, The first system information is system information block SIB1.

35. A communication method, characterized in that, include: The network device determines a first time window, which is used to transmit first system information.

36. The method according to claim 35, characterized in that, The first system information is based on the first request information transmission of the terminal device.

37. The method according to claim 35 or 36, characterized in that, The first time window is determined based on one or more of the following: The first random access channel timing RO is used to transmit the first request information; The first random access response (RAR) is associated with the first random access response (RO). A second time window is associated with the first RO and / or the first RAR; Time domain offset; Periodic time intervals; The first synchronization signal block (SSB) is used to indicate that the network device is transmitting the first system information.

38. The method according to claim 37, characterized in that, One or more of the first RO, the first RAR, the time domain offset, and the periodic time interval are determined based on the first information, and / or the duration of the first time window is determined based on the first information; The first information includes one or more of the following: pre-configuration information, network device configuration information, and protocol pre-defined information.

39. The method according to claim 38, characterized in that, The first information is information sent by a first cell or a second cell, wherein the first cell is the cell that sent the first system information, and the second cell is not the cell that sent the first system information.

40. The method according to any one of claims 37 to 39, characterized in that, The time-domain start position of the first time window is determined based on one or more of the time-domain position of the second time window, the time-domain offset, and the time-domain position of the periodic time interval.

41. The method of claim 40, wherein, The second time window is used for the first terminal device to receive the first RAR.

42. The method of claim 41, wherein, The first request information is carried in the first RO, and the first RAR is the feedback information of the first request information.

43. The method of any one of claims 40-42, wherein, The time domain start position of the first time window is the first time domain position, which is determined based on the time domain start or end position of the second time window and the time domain offset.

44. The method of claim 43, wherein, The first time domain position is the time domain position corresponding to the time domain offset after the time domain start or end position of the second time window.

45. The method of claim 43, wherein, The first time-domain position is determined based on the time-domain start or end position of the second time window, the time-domain offset, and the time-domain boundary position of the periodic time interval.

46. ​​The method according to claim 45, characterized in that, The first time-domain position is equal to the time-domain start position of the first time interval in the periodic time interval, and the first time interval is determined based on the time-domain start or end position of the second time window and the time-domain offset.

47. The method according to claim 46, characterized in that: The first time interval is the time interval in which the second time-domain position is located within the periodic time interval; or, The first time interval is the next time interval in which the second time-domain position is located within the periodic time interval; Wherein, the second time domain position is the time domain position corresponding to the time domain offset after passing through the time domain offset from the time domain start position or end position of the second time window.

48. The method according to any one of claims 37 to 47, characterized in that, The duration of the first time window is determined based on the network device's configuration information.

49. The method according to claim 48, characterized in that, The duration of the first time window is related to the periodic time interval.

50. The method of claim 49, wherein, The duration of the first time window is equal to the duration of one or more time intervals in the periodic time intervals.

51. The method according to any one of claims 37 to 50, characterized in that, The first terminal device is a terminal device that transmits the first request information, and the first request information is carried in the first RO.

52. The method of any one of claims 35-51, wherein, The method further includes: The network device sends a second message to the first terminal device, the second message indicating that the network device is transmitting the first system information.

53. The method of claim 52, wherein, The second information is carried in the first SSB.

54. The method according to claim 53, characterized in that, The second information is carried in the main information block (MIB), physical broadcast channel (PBCH), and subcarrier spacing parameters of the first SSB.

55. The method according to any one of claims 35 to 54, characterized in that, The first system information is SIB1.

56. A communications device, comprising: The communication device is a first terminal device, and the communication device includes: The first determining unit is used to determine a first time window, which is used to receive first system information.

57. The apparatus of claim 56, wherein, The first system information is based on the first request information transmission of the terminal device.

58. The apparatus of claim 56 or 57, wherein, The first time window is determined based on one or more of the following: The first random access channel timing RO is used to transmit the first request information; The first random access response (RAR) is associated with the first random access response (RO). A second time window is associated with the first RO and / or the first RAR; Time domain offset; Periodic time intervals; The first synchronization signal block (SSB) is used to indicate that the network device is transmitting the first system information.

59. The apparatus of claim 58, wherein, One or more of the first RO, the first RAR, the time domain offset, and the periodic time interval are determined based on the first information, and / or the duration of the first time window is determined based on the first information; The first information includes one or more of the following: pre-configuration information, network device configuration information, and protocol pre-defined information.

60. The apparatus of claim 59, wherein, The first information is information sent by a first cell or a second cell, wherein the first cell is the cell that sent the first system information, and the second cell is not the cell that sent the first system information.

61. The apparatus of any one of claims 58-60, wherein, The time-domain start position of the first time window is determined based on one or more of the time-domain position of the second time window, the time-domain offset, and the time-domain position of the periodic time interval.

62. The apparatus of claim 61, wherein, The second time window is used for the first terminal device to receive the first RAR.

63. The apparatus of claim 62, wherein, The first request information is carried in the first RO, and the first RAR is the feedback information of the first request information.

64. The apparatus of any one of claims 61-63, wherein, The time domain start position of the first time window is the first time domain position, which is determined based on the time domain start or end position of the second time window and the time domain offset.

65. The apparatus of claim 64, wherein, The first time domain position is the time domain position corresponding to the time domain offset after the time domain start or end position of the second time window.

66. The apparatus of claim 64, wherein, The first time-domain position is determined based on the time-domain start or end position of the second time window, the time-domain offset, and the time-domain boundary position of the periodic time interval.

67. The apparatus of claim 66, wherein, The first time-domain position is equal to the time-domain start position of the first time interval in the periodic time interval, and the first time interval is determined based on the time-domain start or end position of the second time window and the time-domain offset.

68. The device according to claim 67, characterized in that: The first time interval is the time interval in which the second time-domain position is located within the periodic time interval; or, The first time interval is the next time interval in which the second time-domain position is located within the periodic time interval; Wherein, the second time domain position is the time domain position corresponding to the time domain offset after passing through the time domain offset from the time domain start position or end position of the second time window.

69. The apparatus of any one of claims 58-68, wherein, The duration of the first time window is determined based on the network device's configuration information.

70. The apparatus of claim 69, wherein, The duration of the first time window is related to the periodic time interval.

71. The apparatus of claim 70, wherein, The duration of the first time window is equal to the duration of one or more time intervals in the periodic time intervals.

72. The apparatus of any one of claims 56-71, wherein, The device also includes: The first monitoring unit is used to monitor the information of the first system within a third time window, wherein the third time window belongs to the first time window, and the duration of the third time window is greater than or equal to a first duration, which is determined based on protocol predefined information and / or preconfiguration information.

73. The apparatus of any one of claims 58-72, wherein, The first terminal device is a terminal device that transmits the first request information, and the first request information is carried in the first RO.

74. The apparatus of claim 73, wherein, The device also includes: The first sending unit is configured to send the first request information to the network device if the first terminal device does not receive the first system information within the first time window.

75. The apparatus of any one of claims 58-72, wherein, The first terminal device is not a terminal device that transmits the first request information. One or more of the following are used to determine one or more of the first time windows: the first RO, the first RAR, the second time window, the time domain offset, the periodic time interval, and the first SSB. The device further includes: The second monitoring unit is used to monitor at least one of the one or more first time windows.

76. The apparatus of claim 75, wherein, The at least one time window is determined from the one or more first time windows based on a first time. The first time includes one or more of the following: The first terminal device selects the time of the first time window to be monitored; The transmission time of the first SSB.

77. The apparatus of claim 76, wherein, The at least one time window includes one or more of the following: The first time window in which the first time is located in one or more first time windows; The next first time window of the first time window in the one or more first time windows.

78. The apparatus of any one of claims 75-77, wherein, If the one or more first time windows include N overlapping time windows, then the at least one time window includes the N time windows, where N is a positive integer greater than or equal to 2.

79. The apparatus of claim 78, wherein, All N time windows include the first time.

80. The device according to any one of claims 75 to 78, characterized in that, The device also includes: The second sending unit is configured to send a second request message to the network device if the first terminal device does not receive the first system information within the at least one time window. The second request message is used to request the network device to transmit the first system information.

81. The device according to claim 80, characterized in that, The second request information is carried in the first RO.

82. The device according to any one of claims 56 to 81, characterized in that, The device also includes: The first receiving unit is configured to receive second information sent by the network device, the second information being used to indicate that the network device is transmitting the first system information.

83. The device according to claim 82, characterized in that, The second information is carried in the first SSB.

84. The device according to claim 83, characterized in that, The second information is carried in the main information block (MIB), physical broadcast channel (PBCH), and subcarrier spacing parameters of the first SSB.

85. The device according to any one of claims 58 to 72, 73 to 81, characterized in that, The first system information is used to configure uplink transmission resources, and the device further includes: The second determining unit is configured to determine that the uplink transmission resource is invalid when the uplink transmission resource overlaps with the first RO in the time domain and / or frequency domain.

86. The device according to claim 85, characterized in that, The uplink transmission resources include the Physical Uplink Shared Channel (PUSCH).

87. The device according to claim 86, characterized in that, The PUSCH includes the Message A Physical Uplink Shared Channel MsgA-PUSCH and / or the Configuration Grant Physical Uplink Shared Channel CG-PUSCH.

88. The device according to any one of claims 58 to 72, 73 to 81, 85 to 87, characterized in that, The first system information is used to configure the second RO, the second RO is used to initiate initial access or request the second system information, the second system information is of a different type than the first system information, a first sequence is used for transmission within the first RO, a second sequence is used for transmission within the second RO, the first RO and the second RO overlap in the time domain and / or frequency domain, both the first sequence and the second sequence include a third sequence, and the device further includes: The third determining unit is used to determine that the second RO is invalid; and / or The third transmitting unit is used to not transmit the third sequence in the second RO.

89. The device according to any one of claims 56 to 88, characterized in that, The first system information is SIB1.

90. A communication device, characterized in that, include: The network device determines a first time window, which is used to transmit first system information.

91. The device according to claim 90, characterized in that, The first system information is based on the first request information transmission of the terminal device.

92. The device according to claim 90 or 91, characterized in that, The first time window is determined based on one or more of the following: The first random access channel timing RO is used to transmit the first request information; The first random access response (RAR) is associated with the first random access response (RO). A second time window is associated with the first RO and / or the first RAR; Time domain offset; Periodic time intervals; The first synchronization signal block (SSB) is used to indicate that the network device is transmitting the first system information.

93. The device according to claim 92, characterized in that, One or more of the first RO, the first RAR, the time domain offset, and the periodic time interval are determined based on the first information, and / or the duration of the first time window is determined based on the first information; The first information includes one or more of the following: pre-configuration information, network device configuration information, and protocol pre-defined information.

94. The device according to claim 93, characterized in that, The first information is information sent by a first cell or a second cell, wherein the first cell is the cell that sent the first system information, and the second cell is not the cell that sent the first system information.

95. The device according to any one of claims 92 to 94, characterized in that, The time-domain start position of the first time window is determined based on one or more of the time-domain position of the second time window, the time-domain offset, and the time-domain position of the periodic time interval.

96. The device according to claim 95, characterized in that, The second time window is used for the first terminal device to receive the first RAR.

97. The device according to claim 96, characterized in that, The first request information is carried in the first RO, and the first RAR is the feedback information of the first request information.

98. The device according to any one of claims 95 to 97, characterized in that, The time domain start position of the first time window is the first time domain position, which is determined based on the time domain start or end position of the second time window and the time domain offset.

99. The device according to claim 98, characterized in that, The first time domain position is the time domain position corresponding to the time domain offset after the time domain start or end position of the second time window.

100. The device according to claim 98, characterized in that, The first time-domain position is determined based on the time-domain start or end position of the second time window, the time-domain offset, and the time-domain boundary position of the periodic time interval.

101. The device according to claim 100, characterized in that, The first time-domain position is equal to the time-domain start position of the first time interval in the periodic time interval, and the first time interval is determined based on the time-domain start or end position of the second time window and the time-domain offset.

102. The device according to claim 101, characterized in that: The first time interval is the time interval in which the second time-domain position is located within the periodic time interval; or, The first time interval is the next time interval in which the second time-domain position is located within the periodic time interval; Wherein, the second time domain position is the time domain position corresponding to the time domain offset after passing through the time domain offset from the time domain start position or end position of the second time window.

103. The device according to any one of claims 92 to 102, characterized in that, The duration of the first time window is determined based on the network device's configuration information.

104. The device according to claim 103, characterized in that, The duration of the first time window is related to the periodic time interval.

105. The device according to claim 104, characterized in that, The duration of the first time window is equal to the duration of one or more time intervals in the periodic time intervals.

106. The device according to any one of claims 92 to 105, characterized in that, The first terminal device is a terminal device that transmits the first request information, and the first request information is carried in the first RO.

107. The device according to any one of claims 90 to 106, characterized in that, The device also includes: The first sending unit is used to send second information to the first terminal device, the second information being used to indicate that the network device is transmitting the first system information.

108. The device according to claim 107, characterized in that, The second information is carried in the first SSB.

109. The device according to claim 108, characterized in that, The second information is carried in the MIB, Physical Broadcast Channel (PBCH), and subcarrier spacing parameters of the first SSB.

110. The device according to any one of claims 90 to 109, characterized in that, The first system information is SIB1.

111. A communication device, characterized in that, The device includes a transceiver, a memory, and a processor. The memory stores a program, and the processor invokes the program in the memory and controls the transceiver to receive or transmit signals so that the communication device performs the method as described in any one of claims 1 to 34 or the method as described in any one of claims 35 to 55.

112. An apparatus, characterized in that, Includes a processor for calling a program from memory to cause the apparatus to perform the method as claimed in any one of claims 1 to 34 or the method as claimed in any one of claims 35 to 55.

113. A chip, characterized in that, Includes a processor for calling a program from memory, causing a device on which the chip is mounted to perform the method as claimed in any one of claims 1 to 34 or the method as claimed in any one of claims 35 to 55.

114. A computer-readable storage medium, characterized in that, It contains a program that causes a computer to perform the method as described in any one of claims 1 to 34 or the method as described in any one of claims 35 to 55.

115. A computer program product, characterized in that, Includes a program that causes a computer to perform the method as claimed in any one of claims 1 to 34 or the method as claimed in any one of claims 35 to 55.

116. A computer program, characterized in that, The computer program causes the computer to perform the method as described in any one of claims 1 to 34 or the method as described in any one of claims 35 to 55.

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