Communication method and related device

Abstract

A communication method and a related device are applied to the technical field of communication. The method comprises the following steps: a network device sends first configuration information to a terminal device; the first configuration information indicates a starting point of a time resource randomly accessed by the terminal equipment; the starting point is determined based on a system information block SIB19 and / or a synchronization signal block SSB; and the network equipment receives the random access signal of the terminal equipment in the time resource starting from the starting point. According to the method, the waste of random access resource reservation can be reduced, and the resource utilization rate is improved.

Description

[0001] This application claims priority to Chinese Patent Application No. 202411068765.9, filed with the China National Intellectual Property Administration on August 5, 2024, entitled "Communication Method and Related Apparatus", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of communication technology, specifically to a communication method and related apparatus. Background Technology

[0003] Satellite communication offers unique advantages over terrestrial communication, such as providing wider coverage. Satellite base stations are less susceptible to damage from natural disasters or external forces. The integration of satellite communication into 5G or future communication technologies can provide services to areas such as oceans and forests that are not covered by terrestrial networks. It can also enhance communication reliability, ensuring higher-quality communication services for users on airplanes, trains, and other modes of transportation. Furthermore, it provides more resources for data transmission, increasing network speeds.

[0004] However, in satellite communication scenarios, due to the large coverage area, signal delays or cycles are prolonged. If random access resources are configured according to existing standards, the time for reserving resources will be too long, reducing resource utilization. Summary of the Invention

[0005] This application provides a communication method and related apparatus that can reduce the waste of random access resource reservation and improve resource utilization.

[0006] In a first aspect, embodiments of this application provide a communication method, the method comprising:

[0007] The network device sends first configuration information to the terminal device; the first configuration information indicates the starting point of the time resources that the terminal device randomly accesses; the starting point is determined based on system information block SIB19 and / or synchronization signal block SSB.

[0008] The aforementioned network device receives the random access signal from the aforementioned terminal device within the time resources starting from the aforementioned starting point.

[0009] In satellite communication scenarios, terminal devices only initiate access after obtaining ephemeris data from the received SIB19 and / or completing synchronization based on the received SSB. At other times, even if random access resources are available, access will not be initiated. Therefore, the above scheme determines the starting point of random access resources for the terminal device based on the SIB19 and / or SSB. This concentrates random access resources within a reasonable timeframe before and after the transmission of the SIB19 and / or SSB, reducing unnecessary reservations of other access resources and improving resource utilization efficiency.

[0010] In one possible implementation, the aforementioned starting point is a time point after a first duration following the start of a first reference point; the aforementioned first reference point is the end time point of the aforementioned SIB19 system information window; or, the aforementioned starting point is a time point after a second duration following the start of a second reference point; the aforementioned second reference point is the start time point of the aforementioned SIB19 system information window; or, the aforementioned starting point is a time point after a third duration following the start of a third reference point; the aforementioned third reference point is the time domain start time point of the first SIB19 transmitted in the aforementioned SIB19 system information window.

[0011] Optionally, the aforementioned first duration is the uplink data scheduling delay at the cell level.

[0012] In the above scheme, the SIB19 system information window is used for scheduling and transmitting SIB19. Based on the start and end times of the SIB19 system information window, or the time-domain resources within that window, the starting point of the terminal device's random access time resources is determined. This allows the terminal device's random access resources to be close to the transmission time of the SIB19. Since the terminal device only initiates access after obtaining the ephemeris from the received SIB19, configuring random access resources close to the transmission time of the SIB19 reduces the reservation and occupation of other unnecessary access resources, improving resource utilization efficiency.

[0013] In one possible implementation, the aforementioned starting point is a time point after a fourth time interval following the start of the fourth reference point; the aforementioned fourth reference point is the starting time point of the search space for scheduling the Physical Downlink Control Channel (PDCCH) of the aforementioned SIB19; or, the aforementioned starting point is a time point after a fifth time interval following the start of the fifth reference point; the aforementioned fifth reference point is the ending time point of the search space for scheduling the PDCCH of the aforementioned SIB19; or, the aforementioned starting point is a time point after a sixth time interval following the start of the sixth reference point; the aforementioned sixth reference point is the time point for transmitting the PDCCH for scheduling the aforementioned SIB19. The starting point of the DCCH time domain resources; or, the aforementioned starting point is the time point after the seventh reference point and a seventh duration; the aforementioned seventh reference point is the ending point of the time domain resources for sending and scheduling the aforementioned SIB19 PDCCH; or, the aforementioned starting point is the time point after the eighth reference point and a eighth duration; the aforementioned eighth reference point is the starting point of the time domain resources for transmitting the aforementioned SSB; or, the aforementioned starting point is the time point after the ninth reference point and a ninth duration; the aforementioned ninth reference point is the ending point of the time domain resources for transmitting the aforementioned SSB.

[0014] Similarly, in the above scheme, the transmission-related time point of SIB19 or SSB is used as a reference point to determine the starting point of the random access time resources for the terminal device. This allows the random access resources of the terminal device to be close to the transmission time of the SIB19 or SSB. Since the terminal device only initiates access after obtaining the ephemeris from the received SIB19 or completing synchronization based on the received SSB, configuring the random access resources close to the transmission time of the SIB19 or SSB can reduce the reservation and occupation of other unnecessary access resources and improve resource utilization efficiency.

[0015] In one possible implementation, the cutoff time for the time resources randomly accessed by the aforementioned terminal device is the time point after the tenth time period following the start of the aforementioned terminal device receiving the aforementioned SSB.

[0016] In the above scheme, the deadline for random access resources of the terminal device is determined based on the time point after the terminal device receives the SSB. This allows the terminal device to quickly perform random access after completing synchronization based on the received SSB, without needing to reserve too many access resources, thereby saving resources and improving resource utilization efficiency.

[0017] In one possible implementation, the cutoff time for the time resources randomly accessed by the aforementioned terminal device is: the time point after eleven hours from the time the aforementioned terminal device receives the aforementioned SIB19.

[0018] In the above scheme, the deadline for random access resources of the terminal device is determined based on the time point after the terminal device receives SIB19. This allows the terminal device to quickly perform random access after obtaining ephemeris based on the received SIB19, without having to reserve too many access resources, thereby saving resources and improving resource utilization efficiency.

[0019] In one possible implementation, the aforementioned starting point is a time-domain point in a periodic random access resource configured by the aforementioned network device, and the time resource for random access by the aforementioned terminal device is a first time window in the time-domain resource included in the aforementioned periodic random access resource.

[0020] Optionally, the aforementioned time-domain resources also include a second time window, which is configured for non-contentionable random access.

[0021] In the above scheme, network devices can configure random access resources according to existing standards. Then, in this embodiment, a portion of the configured random access resources is selected for random access by the terminal device, while the remaining random access resources can be used for other purposes, such as non-contention-based random access. This improves resource utilization and is compatible with existing random access resource configurations, making it easy to implement.

[0022] In one possible implementation, the aforementioned method further includes: the aforementioned network device configuring non-contentionable random access resources for the aforementioned terminal device.

[0023] In the above scheme, the access resources of the terminal device are limited to a fixed short period of time. However, the terminal device may also perform non-contention random access at other times. Therefore, in order to enable the terminal device to perform random access at other times, other resources are configured for the terminal device to perform random access.

[0024] Secondly, embodiments of this application provide a communication method, the method comprising:

[0025] The terminal device receives first configuration information; the first configuration information indicates the starting point of the time resources randomly accessed by the terminal device; the starting point is determined based on system information block SIB19 and / or synchronization signal block SSB.

[0026] The aforementioned terminal device sends a random access signal within the time resources starting from the aforementioned starting point.

[0027] In one possible implementation, the aforementioned starting point is a time point after a first duration following the start of a first reference point; the aforementioned first reference point is the end time point of the aforementioned SIB19 system information window; or, the aforementioned starting point is a time point after a second duration following the start of a second reference point; the aforementioned second reference point is the start time point of the aforementioned SIB19 system information window; or, the aforementioned starting point is a time point after a third duration following the start of a third reference point; the aforementioned third reference point is the time domain start time point of the first SIB19 transmitted in the aforementioned SIB19 system information window.

[0028] In one possible implementation, the aforementioned first duration is the cell-level uplink data scheduling delay.

[0029] In one possible implementation, the aforementioned starting point is a time point after a fourth time interval following the start of the fourth reference point; the aforementioned fourth reference point is the starting time point of the search space for scheduling the Physical Downlink Control Channel (PDCCH) of the aforementioned SIB19; or, the aforementioned starting point is a time point after a fifth time interval following the start of the fifth reference point; the aforementioned fifth reference point is the ending time point of the search space for scheduling the Physical Downlink Control Channel (PDCCH) of the aforementioned SIB19; or, the aforementioned starting point is a time point after a sixth time interval following the start of the sixth reference point; the aforementioned sixth reference point is the time point for transmitting the Physical Downlink Control Channel (PDCCH) for scheduling the aforementioned SIB19. The starting time point of the time domain resources of the physical downlink control channel (PDCCH); or, the aforementioned starting point is the time point after the seventh reference point and a seventh duration; the aforementioned seventh reference point is the end time point of the time domain resources of the physical downlink control channel (PDCCH) for transmitting and scheduling the aforementioned SIB19; or, the aforementioned starting point is the time point after the eighth reference point and a eighth duration; the aforementioned eighth reference point is the starting time point of the time domain resources for transmitting the aforementioned SSB; or, the aforementioned starting point is the time point after the ninth reference point and a ninth duration; the aforementioned ninth reference point is the end time point of the time domain resources for transmitting the aforementioned SSB.

[0030] In one possible implementation, the cutoff time for the time resources randomly accessed by the aforementioned terminal device is the time point after the tenth time period following the start of the aforementioned terminal device receiving the aforementioned SSB.

[0031] In one possible implementation, the cutoff time for the time resources randomly accessed by the aforementioned terminal device is: the time point after eleven hours from the time the aforementioned terminal device receives the aforementioned SIB19.

[0032] In one possible implementation, the aforementioned starting point is a time-domain point in a periodic random access resource configured by the aforementioned network device, and the time resource for random access by the aforementioned terminal device is a first time window in the time-domain resource included in the aforementioned periodic random access resource.

[0033] In one possible implementation, the aforementioned time-domain resource further includes a second time window, which is configured for non-contentionable random access.

[0034] In one possible implementation, the aforementioned method further includes: the aforementioned terminal device receiving non-contentionable random access resources configured by the aforementioned network device.

[0035] Thirdly, embodiments of this application provide a first communication device for executing the method in the first aspect or any possible implementation thereof. The first communication device includes units for executing the method in the first aspect or any possible implementation thereof. Exemplarily, the first communication device may be a network device, a chip, or a functional module, which may be applied in a network device.

[0036] Fourthly, embodiments of this application provide a second communication device for executing the method in the second aspect or any possible implementation thereof. The second communication device includes units for executing the method in the second aspect or any possible implementation thereof. Exemplarily, the second communication device may be a terminal device, a chip, or a functional module, which may be applied in a terminal device.

[0037] Fifthly, embodiments of this application provide a first communication device, which includes a processor for executing the method described in the first aspect or any possible implementation thereof. Alternatively, the processor is configured to execute a program stored in a memory, wherein when the program is executed, the method described in the first aspect or any possible implementation thereof is executed.

[0038] In one possible implementation, the memory is located outside the aforementioned first communication device.

[0039] In one possible implementation, the memory is located within the aforementioned first communication device.

[0040] In this embodiment, the processor and memory can also be integrated into a single device, that is, the processor and memory can be integrated together. For example, the first communication device can be a chip.

[0041] In one possible implementation, the first communication device further includes a transceiver for receiving or transmitting signals. Exemplarily, the transceiver can also be used to transmit configuration information, etc. Exemplarily, the transceiver can also be used to receive random access signals. Exemplarily, the first communication device can be a network device.

[0042] Sixthly, embodiments of this application provide a second communication device, which includes a processor for executing the method shown in the second aspect or any possible implementation thereof. Alternatively, the processor is configured to execute a program stored in a memory, and when the program is executed, the method shown in the second aspect or any possible implementation thereof is executed.

[0043] In one possible implementation, the memory is located outside the aforementioned second communication device.

[0044] In one possible implementation, the memory is located within the aforementioned second communication device.

[0045] In this embodiment, the processor and memory can also be integrated into a single device, that is, the processor and memory can be integrated together. For example, the second communication device can be a chip.

[0046] In one possible implementation, the second communication device further includes a transceiver for receiving or transmitting signals. Exemplarily, the transceiver can also be used to receive configuration information, etc. Exemplarily, the transceiver can also be used to transmit random access signals. Exemplarily, the second communication device can be a terminal device.

[0047] In a seventh aspect, embodiments of this application provide a first communication device, the first communication device including a logic circuit and an interface, the logic circuit and the interface being coupled; the interface is used for inputting and / or outputting information, and the logic circuit is used for performing the method as described in the first aspect or any possible implementation.

[0048] Eighthly, embodiments of this application provide a second communication device, the second communication device including logic circuitry and an interface, the logic circuitry and the interface being coupled; the interface being used for inputting and / or outputting information, and the logic circuitry being used for performing the method described in the second aspect or any possible implementation thereof.

[0049] Ninthly, embodiments of this application provide a computer-readable storage medium for storing a computer program that, when run on a computer, causes the methods shown in the first aspect or any possible implementation thereof to be executed.

[0050] In a tenth aspect, embodiments of this application provide a computer-readable storage medium for storing a computer program that, when run on a computer, causes the methods shown in the second aspect or any possible implementation thereof to be executed.

[0051] Eleventhly, embodiments of this application provide a computer program product, which includes a computer program or computer code, which, when run on a computer, causes the methods shown in the first aspect or any possible implementation to be executed.

[0052] In a twelfth aspect, embodiments of this application provide a computer program product comprising a computer program or computer code that, when run on a computer, causes the methods shown in the second aspect or any possible implementation thereof to be executed.

[0053] In a thirteenth aspect, embodiments of this application provide a computer program that, when run on a computer, executes the methods shown in the first aspect or any possible implementation described above.

[0054] In a fourteenth aspect, embodiments of this application provide a computer program that, when run on a computer, executes the methods shown in the second aspect or any possible implementation described above.

[0055] In a fifteenth aspect, embodiments of this application provide a communication system comprising a network device and a terminal device, wherein the network device is configured to perform the method shown in the first aspect or any possible implementation thereof, and the terminal device is configured to perform the method shown in the second aspect or any possible implementation thereof. Attached Figure Description

[0056] Figure 1 and Figure 2 This is a schematic diagram of the communication system architecture;

[0057] Figure 3 This is a schematic diagram of the method flow provided in the embodiments of this application;

[0058] Figures 4 to 15 This is a schematic diagram of temporal positional relationships provided in an embodiment of this application;

[0059] Figures 16 to 18 This is a schematic diagram of the device structure provided in the embodiments of this application. Detailed Implementation

[0060] In this application embodiment, "multiple" refers to two or more. In this application embodiment, "and / or" is used to describe the relationship between related objects, indicating three relationships that can exist independently. For example, A and / or B can mean: A exists alone, B exists alone, or A and B exist simultaneously. Descriptions such as "at least one of a1, a2, ... and an" used in this application embodiment include the case where any one of a1, a2, ... and an exists alone, as well as any combination of any multiple of a1, a2, ... and an. Each case can exist alone; for example, the description "at least one of a, b, and c" includes the cases where a, b, c, a and b combined, a and c combined, b and c combined, or a, b, and c combined. In this application embodiment, A / B can represent A or B.

[0061] In the various embodiments of this application, unless otherwise specified or in case of logical conflict, the terminology and / or descriptions between the various embodiments are consistent and can be referenced by each other. Technical features in different embodiments can be combined to form new embodiments according to their inherent logical relationships.

[0062] The embodiments of this application will be described below with reference to the accompanying drawings.

[0063] The method provided in this application can be applied to non-terrestrial networks (NTN) communication systems. For example... Figure 1 As shown, the NTN communication system includes terminal equipment, satellites (or satellite base stations) and ground stations (or gateway stations).

[0064] The terminal device in this application embodiment is a device with wireless transceiver functionality. The terminal device can communicate with access network equipment (or access devices) in a radio access network (RAN). The terminal device can also be referred to as user equipment (UE), access terminal, terminal, subscriber unit, user station, mobile station, remote station, remote terminal, mobile device, user terminal, user agent, or user device, etc. In one possible implementation, the terminal device can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; it can also be deployed on water (such as on a ship). In one possible implementation, the terminal device can be a handheld device with wireless communication functionality, vehicle-mounted device, wearable device, sensor, terminal in the Internet of Things (IoT), terminal in the Internet of Vehicles (IoV), drone, 5G network, or any form of terminal device in future networks, etc., and this application embodiment does not limit this.

[0065] In one possible implementation, the terminal devices shown in this application embodiment can also communicate with each other through device-to-device (D2D) or machine-to-machine (M2M) communication.

[0066] In one possible implementation, the terminal device shown in this application embodiment can also be a device in the Internet of Things (IoT). This IoT network may, for example, include a vehicle-to-everything (V2X) network. The communication methods in the V2X system are collectively referred to as vehicle-to-other-device (V2X), where X can represent anything. For example, V2X may include: vehicle-to-vehicle (V2V) communication, vehicle-to-infrastructure (V2I) communication, vehicle-to-pedestrian (V2P) communication, or vehicle-to-network (V2N) communication, etc.

[0067] In this application embodiment, the satellite can provide wireless access services to terminal devices, allocate wireless resources to accessing terminal devices, and provide reliable wireless transmission protocols and data encryption protocols. The satellite can be an artificial Earth satellite or a high-altitude spacecraft, such as an evolved NodeB (eNB) or a next-generation node B (gNB). Alternatively, the satellite can act as a relay for these base stations, transmitting their wireless signals to the terminal devices; in this case, the ground station can be considered a wireless communication base station. Therefore, in some embodiments of this application, such as in satellite regeneration scenarios, the network device can be... Figure 1 The satellite base station shown; in other embodiments, such as in a satellite pass-through scenario, the network equipment can be... Figure 1 The ground station is shown. In one possible implementation, the names of devices with network equipment functions may differ in systems using different wireless access technologies; these will not be shown individually in this application's embodiments.

[0068] Optionally, the satellite can be a geostationary earth orbit (GEO) satellite, a non-geostationary earth orbit (NGEO) medium earth orbit (MEO) satellite, or a low earth orbit (LEO) satellite, or a High Altitude Platform Station (HAPS), etc. This application does not limit the specific type of satellite.

[0069] The ground station in this embodiment can be used to connect the satellite and the core network. For example, when the satellite acts as a base station for wireless communication, the ground station can transmit signaling between the satellite and the core network. Alternatively, the ground station can act as a base station for wireless communication, and the satellite can transmit signaling between the terminal device and the ground station. For instance, during communication, the ground station can send signaling from the core network to the satellite via a feedback link (or feeder link); and the satellite can then send the signaling to the terminal device via the service link between the satellite and the terminal device. Correspondingly, the terminal device can also send signaling to the satellite via the service link, and the satellite can then send the signaling to the core network via the ground station.

[0070] In one possible implementation, Figure 1Only one satellite and one ground station are shown. In actual use, a multi-satellite and / or multi-ground-station architecture can be adopted as needed. Each satellite can provide services to one or more terminal devices, each satellite can correspond to one or more ground stations, and each ground station can correspond to one or more satellites, etc., which are not specifically limited in this embodiment.

[0071] For example, Figure 2 This is a schematic diagram of another NTN communication system architecture provided in an embodiment of this application. For example, terminal devices can access the network via an air interface (which can be various types of air interfaces, such as 5G air interfaces), and base stations can be deployed on satellites (e.g., in satellite regeneration mode) and connected to the ground-based core network via wireless links. Optionally, wireless links exist between satellites to complete signaling interaction and user data transmission between base stations. In another implementation, base stations can also be deployed on the ground and connected to the core network via optical fiber. In this case, the satellite acts as a transparent forwarding node (e.g., in satellite transparent transmission mode), undertaking the function of transparent data forwarding.

[0072] For example, Figure 2 The various network elements and their interfaces in the core network can be as follows: Terminal devices can access the satellite network via the air interface and initiate services such as making calls or accessing the internet. Base stations can be used to provide wireless access services, allocate wireless resources to accessing terminal devices, and provide reliable wireless transmission protocols and data encryption protocols. Ground stations can be used to forward signaling and service data between the satellite base station and the core network. The core network can be used for user access control, mobility management, session management, user security authentication, or billing. The core network can consist of multiple functional units, such as functional entities including control plane and data plane. For example,... Figure 2 As shown, the core network can include access and mobility management functions (AMF), session management functions (SMF), and user plane functions (UPF). For example, AMF can be used to manage user access, security authentication, and mobility management. UPF can be used to manage user plane data transmission and traffic statistics.

[0073] For example, Figure 2 The air interface shown can be understood as the wireless link between the terminal and the base station; the Xn interface can be understood as the interface between base stations, mainly used for signaling interaction such as handover; the NG interface can be used as the interface between the base station and the core network, used for exchanging non-access stratum (NAS) and other signaling of the core network, as well as user service data.

[0074] The network architecture and business scenarios described in the embodiments of this application are for the purpose of more clearly illustrating the technical solutions of the embodiments of this application, and do not constitute a limitation on the technical solutions provided in the embodiments of this application. As those skilled in the art will know, with the evolution of network architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of this application are also applicable to similar technical problems.

[0075] For example, the aforementioned NTN satellite communication system can integrate the following network systems: Internet of Things (IoT), Vehicle to X (V2X), Narrow Band Internet of Things (NB-IoT), LTE Frequency Division Duplex (FDD) system, LTE Time Division Duplex (TDD) system, Long Term Evolution (LTE) system, 5th Generation (5G) communication system, 6th Generation (6G) communication system, or future communication systems, etc. This application does not limit this.

[0076] However, the most significant characteristic of satellite communication is its large round-trip transmission delay, requiring terminal devices to frequently switch beams and cells due to satellite movement. Therefore, configuring random access resources according to existing standards would result in excessively long resource reservation times, reducing resource utilization. Specifically, random access resources in existing standards are periodic. Network devices use indicators to specify the index in the corresponding random access resource table, allowing the terminal device to obtain the specific period and the position of the random access resource within that period. For ease of understanding, an example table from the existing standard is shown in Table 1.

[0077] In Table 1, the first column represents the physical random access channel (PRACH) configuration index indicated by the network device. The second column represents the format of the random access sequence, called the preamble format. The third column represents the period of the random access resource (in frames). The fourth column represents the frame number of the starting point of the period. The fifth column represents the subframe number of the random access resource within the period. The sixth column represents the start symbol within each subframe. For other formats of random access sequences, the time occupied is relatively short; for example, if a subframe includes multiple time slots, then a subframe may include multiple random access time slots or opportunities. Therefore, the last two columns represent the number and duration of random access opportunities within a subframe for other formats.

[0078] Table 1

[0079]

[0080] Because existing standard random access resources are periodic, the starting point can be flexibly configured. However, terminal devices often need to acquire synchronization information before initiating random access. For example, in satellite communication scenarios, a terminal device will only initiate access after obtaining the ephemeris from System Information Block (SIB19). Before obtaining the ephemeris, the terminal device will not use any available random access resources, leading to a waste of access resources. In another implementation, the terminal device needs to synchronize with the network device before initiating random access; otherwise, access performance will be affected. The terminal device relies on the synchronization signal block (SSB) sent by the network device to achieve downlink synchronization. For example, the SSB is sent periodically by the network device. However, in satellite communication scenarios, due to the large coverage area and limited SSB beam, the period of the SSB signal may be lengthened. This results in the terminal device being unable to complete synchronization for a longer period, and even if random access resources are configured, they will not be used, leading to a waste of access resources.

[0081] Based on the above description, terminal devices generally initiate random access within a certain period after receiving SIB19 and / or SSB. According to the existing periodic access resource configuration, this results in a waste of random access resources. Therefore, in order to reduce the waste of reserved random access resources and improve resource utilization, this application provides a communication method and related apparatus. The following is an exemplary description.

[0082] First, a communication method provided by an embodiment of this application is introduced. See, for example, [link to relevant documentation]. Figure 3 The method may include, but is not limited to, the steps shown in S301 to S304 below.

[0083] S301, The network device sends first configuration information to the terminal device; the first configuration information indicates the starting point of the time resources that the terminal device randomly accesses; the starting point is determined based on the system information block SIB19 and / or the synchronization signal block SSB.

[0084] For example, the network device may be one described above. Figure 1 or Figure 2 The satellite base station or ground station shown. The terminal equipment can be, for example, the one described above. Figure 1 or Figure 2 The terminal device shown.

[0085] For example, the network device described above can send the first configuration information to the terminal device via a broadcast message. This first configuration information can indicate to the terminal device the starting point of the time resource for random access. For ease of subsequent description, the time resource for random access by the terminal device will be referred to as the target time resource.

[0086] In one possible example, after receiving a random access request from a terminal device, the network device can determine a time reference point in response to the request. Then, the first configuration information indicates the temporal position of the starting point of the target time resource relative to the time reference point. This temporal position can be understood as the time offset of the starting point relative to the time reference point. This time offset can be represented by the duration of the interval between the starting point and the time reference point. For example, in one implementation, the first configuration information can indicate the time reference point and the duration of the interval between the starting point of the target time resource and the time reference point, so that the terminal device can determine the starting point of the target time resource based on the time reference point and the duration of the interval. Alternatively, in another implementation, the time reference point can be pre-agreed upon through a protocol. In this case, the first configuration information can indicate the duration of the interval between the starting point of the target time resource and the time reference point, so that the terminal device can determine the starting point of the target time resource based on the agreed-upon time reference point and the duration of the interval. The duration of this interval can be exemplified by any of the durations from the first to the ninth duration, which will not be detailed here.

[0087] The following provides an illustrative description of the aforementioned time reference points, the duration of the aforementioned intervals, and the starting point of the target time resource.

[0088] In one example, the aforementioned time reference point can be the cutoff time of the SIB19's system information window (SI window). This system information window is the time window used for scheduling SIB19. The starting point of the aforementioned target time resource can be the time point after a first duration, starting from the cutoff time of the SIB19's SI window. For ease of understanding, please refer to the example provided. Figure 4 As shown. In Figure 4 The diagram illustrates the temporal location relationship between the SIB19's SI window and the target time resource. It shows the cutoff time point of the SIB19's SI window (e.g., ...). Figure 4 The first point in time) and the starting point of the target time resource (e.g. Figure 4The second time point) is spaced apart from the first duration. This target time resource is used for random access by terminal devices. After successful random access, the terminal device can perform service transmission. Based on this, Figure 4 In this context, target time resources are followed by business resources. This is understandable. Figure 4 The examples shown are merely illustrative and do not constitute a limitation on the embodiments of this application.

[0089] For example, the value of the first duration can be greater than or equal to 0. If the value of the first duration is 0, then the starting point of the target time resource is the end point of the SI window of the SIB19. If the value of the first duration is greater than 0, this is mainly to take into account one or more delays in the communication system, such as scheduling delay, signal transmission delay, or terminal-side signal processing delay, which may prevent the network device from receiving the random access signal immediately after sending the SIB19. In addition, on the terminal side, even if random access is initiated from the end point of the SI window of the SIB19, the network device cannot immediately receive the random access signal. Therefore, the terminal device can be configured to use the time point after the first duration from the end point of the SI window of the SIB19 as the starting point of the random access resource. This achieves precise configuration of the terminal device's access resources and further reduces excessive reservation of access resources to reduce resource waste.

[0090] In one possible implementation, the aforementioned first duration may be, for example, the cell-level uplink data scheduling delay Koffset. It is understood that this is merely an example and does not constitute a limitation on the embodiments of this application. The specific value of this first duration can be set according to actual application needs, and this application embodiment does not specifically limit it.

[0091] For example, the SI window of SIB19 can be configured by the network device to the terminal device via a SIB1 broadcast message. That is, the terminal device can learn about the SI window of SIB19 by receiving the SIB1 broadcast message, specifically the start and end times of the SI window.

[0092] In one example, the aforementioned time reference point could be the starting time of the SI window of SIB19. The starting point of the target time resource could be a point in time after a second duration, beginning at the starting time of the SI window of SIB19. For ease of understanding, please refer to the example provided. Figure 5 As shown. In Figure 5 The diagram illustrates the temporal location relationship between the SIB19's SI window and the target time resource. It shows the starting time point of the SIB19's SI window (e.g., ...). Figure 5The first point in time) and the starting point of the target time resource (e.g. Figure 5 The second time point (the second time interval) is used to define the second duration. This target time resource is used for random access by the terminal device. After successful random access, the terminal device can perform service transmission. Based on this, Figure 5 In this context, target time resources are followed by business resources. This is understandable. Figure 5 The examples shown are merely illustrative and do not constitute a limitation on the embodiments of this application.

[0093] For example, the value of the second duration can be greater than or equal to 0. Alternatively, the value of the second duration can be greater than or equal to the length of the SI window of SIB19. If the value of the second duration is the length of the SI window of SIB19, then the starting point of the target time resource is the ending point of the SI window of SIB19. If the value of the second duration is greater than the length of the SI window of SIB19, this is mainly because the communication system has one or more delays such as scheduling delay, signal transmission delay, or terminal-side signal processing delay, which makes it impossible for the network device to receive the random access signal immediately after sending SIB19. In addition, on the terminal side, even if random access is initiated from the ending point of the SI window of SIB19, the network device cannot immediately receive the random access signal. Therefore, the second duration can be configured to be greater than the length of the SI window of SIB19. This allows the terminal device to receive the random access signal at the ending point of the SI window of SIB19 (e.g., Figure 5 After a certain period of time (the third time point), random access is initiated again. This achieves precise configuration of access resources for the terminal device, further reducing excessive reservation of access resources and minimizing resource waste. It is understood that this is merely an example and does not constitute a limitation on the embodiments of this application. The specific value of this second duration can be set according to actual application needs, and this application embodiment does not impose specific limitations.

[0094] In one example, within the SI window of the aforementioned SIB19, a network device can transmit one or more SIB19s. Therefore, the aforementioned time reference point could be the time-domain start time of the first SIB19 transmitted within the SI window. The starting point of the aforementioned target time resource could be the time point three durations after the time-domain start time of this first SIB19. For ease of understanding, please refer to the example provided. Figure 6 As shown. In Figure 6 The diagram shows the temporal location relationship between the SIwindow of SIB19 and the target time resource. Figure 6The example also illustrates the location within the SI window where the first SIB19 time-domain resource is transmitted. Figure 6 As can be seen, the start time of the first SIB19 time domain resource transmission (e.g.) Figure 6 The first time point shown) and the starting point of the target time resource (e.g.) Figure 6 The third time interval is the second time point. This target time resource is used for random access by terminal devices. After successful random access, the terminal device can perform service transmission. Based on this, Figure 6 In this context, target time resources are followed by business resources. This is understandable. Figure 6 The examples shown are merely illustrative and do not constitute a limitation on the embodiments of this application.

[0095] For example, the value of the third duration can be greater than or equal to 0. Alternatively, the value of the third duration can be greater than or equal to the first threshold. The first threshold is the time point from the start of the transmission of the first SIB19 time domain resource to the end of the SIB19 SI window (e.g., ...). Figure 6 The duration between the third time point shown. If the value of the third duration is the first threshold, then the starting point of the target time resource is the end point of the SI window of the SIB19. If the value of the third duration is greater than the first threshold, this is mainly because the communication system has one or more delays such as scheduling delay, signal transmission delay, or terminal-side signal processing delay, which makes it impossible for the network device to receive the random access signal immediately after sending the SIB19. In addition, on the terminal side, even if the random access is initiated from the end point of the SI window of the SIB19, the network device cannot immediately receive the random access signal. Therefore, the third duration can be configured to be greater than the first threshold. This allows the terminal device to initiate random access after a period of time after the end point of the SI window of the SIB19. This achieves precise configuration of the access resources of the terminal device and further reduces excessive reservation of access resources to reduce resource waste. It is understood that this is only an example and does not constitute a limitation on the embodiments of this application. The specific value of the third duration can be set according to the actual application needs, and the embodiments of this application do not specifically limit it.

[0096] For example, since the SI window of SIB19 and the time-domain resources for transmitting the first SIB19 are configured by the network device, the network device can calculate the first threshold. This allows the network device to determine the third duration by referring to the first threshold, and then indicate the third duration through the first configuration information. Furthermore, the terminal device can also obtain the time-domain resources for transmitting the first SIB19 from the network device's resource configuration information, i.e., determine the start time of the time-domain resources. Therefore, the terminal device can determine the start point of the target time resource based on the third duration indicated by the first configuration information.

[0097] In one example, the aforementioned time reference point could be the starting time point of the search space for scheduling the physical downlink control channel (PDCCH) of SIB19. Let's first illustrate the search space: different PDCCHs are distinguished by cell identifiers (C-RNTI). Network devices configure a set of candidate PDCCHs for obtaining downlink control information (DCI) to terminal devices via higher-layer signaling (e.g., Radio Resource Control (RRC) signaling). The DCI is carried in the PDCCH. The DCI includes time-frequency resources configured for uplink and / or downlink transmission by the terminal device. The terminal device does not know in advance on which candidate PDCCH(s) in the candidate PDCCH set will receive the DCI. However, the terminal device can know what downlink control information it currently expects to receive based on the network device's configuration information. Therefore, the terminal device attempts to decode each candidate PDCCH in this candidate PDCCH set according to the configuration information. If decoding is successful, the terminal device knows that the successfully decoded DCI information was sent to it. The aforementioned set of candidate PDCCHs is the search space set, or simply the search space.

[0098] If the aforementioned time reference point is the starting time point of the search space of the aforementioned PDCCH, the starting point of the aforementioned target time resource can be a time point that begins at the starting time point of that search space and then continues for four time intervals. For ease of understanding, please refer to the example provided. Figure 7 As shown. In Figure 7 The diagram illustrates the temporal positional relationship between the SI window of SIB19, the search space of the PDCCH scheduling SIB19, and the target time resource. It can be seen that the search space of the PDCCH is within the SI window of SIB19. The starting time point of the PDCCH's search space (e.g., Figure 7The first point in time) and the starting point of the target time resource (e.g. Figure 7 The fourth time interval is the second time point. This target time resource is used for random access by terminal devices. After successful random access, the terminal device can perform service transmission. Based on this, Figure 7 In this context, target time resources are followed by business resources. This is understandable. Figure 7 The examples shown are merely illustrative and do not constitute a limitation on the embodiments of this application.

[0099] For example, the value of the fourth duration mentioned above can be greater than or equal to 0. Alternatively, the value of the fourth duration mentioned above can be greater than or equal to the second threshold. The second threshold is the starting time point of the search space of the PDCCH of the SIB19 schedule, up to the ending time point of the SI window of SIB19 (e.g., Figure 7 The fourth duration is the time interval between the second and third time points shown. If the value of the fourth duration is the second threshold, then the starting point of the target time resource is the end point of the SI window of the SIB19. If the value of the fourth duration is greater than the second threshold, this is mainly because the communication system has one or more delays such as scheduling delay, signal transmission delay, or terminal-side signal processing delay, which makes it impossible for the network device to receive the random access signal immediately after sending the SIB19. In addition, on the terminal side, even if the random access is initiated from the end point of the SI window of the SIB19, the network device cannot immediately receive the random access signal. Therefore, the fourth duration can be configured to be greater than the second threshold. This allows the terminal device to initiate random access after a certain period of time after the end point of the SI window of the SIB19. This achieves precise configuration of the access resources of the terminal device and further reduces excessive reservation of access resources to reduce resource waste. It is understood that this is only an example and does not constitute a limitation on the embodiments of this application. The specific value of the fourth duration can be set according to the actual application needs, and the embodiments of this application do not specifically limit it.

[0100] For example, since the SI window of SIB19 and the search space of the PDCCH scheduling SIB19 are configured by the network device, the network device can calculate the second threshold. This allows the network device to refer to the second threshold to determine the fourth duration, and then indicate the fourth duration through the first configuration information. Furthermore, the terminal device can also obtain the search space of the PDCCH from the resource configuration information of the network device, that is, determine the start time point of the search space. Therefore, the terminal device can determine the start point of the target time resource based on the fourth duration indicated by the first configuration information.

[0101] In one example, the aforementioned time reference point could be the cutoff time of the search space for scheduling the PDCCH of SIB19. The starting point of the target time resource could be a point in time five hours after the cutoff time of that search space. For ease of understanding, please refer to the example provided. Figure 8 As shown. In Figure 8 The diagram illustrates the temporal positional relationship between the SIB19's SI window, the search space of the PDCCH scheduling the SIB19, and the target time resource. It can be seen that the search space of the PDCCH is within the SIB19's SI window. The cutoff time point of the PDCCH's search space (e.g., ...) Figure 8 The first point in time) and the starting point of the target time resource (e.g. Figure 8 The second time point) is spaced at the fifth time interval. This target time resource is used for random access by terminal devices. After successful random access, the terminal device can perform service transmission. Based on this, Figure 8 In this context, target time resources are followed by business resources. This is understandable. Figure 8 The examples shown are merely illustrative and do not constitute a limitation on the embodiments of this application.

[0102] For example, the value of the fifth duration mentioned above can be greater than or equal to 0. Alternatively, the value of the fifth duration mentioned above can be greater than or equal to the third threshold. The third threshold is the cutoff time of the search space of the PDCCH of the SIB19 schedule, up to the cutoff time of the SI window of SIB19 (e.g., Figure 8 The fifth duration is the time interval between the third time point shown. If the value of the fifth duration is the third threshold, then the starting point of the target time resource is the end point of the SI window of the SIB19. If the value of the fifth duration is greater than the third threshold, this is mainly because the communication system has one or more delays such as scheduling delay, signal transmission delay, or terminal-side signal processing delay, which makes it impossible for the network device to receive the random access signal immediately after sending the SIB19. In addition, on the terminal side, even if the random access is initiated from the end point of the SI window of the SIB19, the network device cannot immediately receive the random access signal. Therefore, the fifth duration can be configured to be greater than the third threshold. This allows the terminal device to initiate random access after a period of time after the end point of the SI window of the SIB19. This achieves precise configuration of the access resources of the terminal device and further reduces excessive reservation of access resources to reduce resource waste. It is understood that this is only an example and does not constitute a limitation on the embodiments of this application. The specific value of the fifth duration can be set according to the actual application needs, and the embodiments of this application do not specifically limit it.

[0103] For example, since the SI window of SIB19 and the search space of the PDCCH scheduling SIB19 are configured by the network device, the network device can calculate the third threshold. This allows the network device to refer to the third threshold to determine the fifth duration, and then indicate the fifth duration through the first configuration information. Furthermore, the terminal device can also obtain the search space of the PDCCH from the resource configuration information of the network device, that is, determine the cutoff time point of the search space. Therefore, the terminal device can determine the start point of the target time resource based on the fifth duration indicated by the first configuration information.

[0104] In one example, the aforementioned time reference point can be the starting time point of the time-domain resources for scheduling the PDCCH of SIB19. The starting point of the aforementioned target time resource can be the time point six hours after the starting time point of the time-domain resources of the PDCCH. For ease of understanding, please refer to the example provided. Figure 9 As shown. In Figure 9 The diagram illustrates the temporal positional relationship between the SIB19's SI window, the time-domain resources of the PDCCH scheduling the SIB19, and the target time resources. It can be seen that the PDCCH's time-domain resources are within the SIB19's SI window. The starting time point of the PDCCH's time-domain resources (e.g., ...) Figure 9 The first point in time) and the starting point of the target time resource (e.g. Figure 9 The second time point) is spaced at the sixth time interval. This target time resource is used for random access by terminal devices. After successful random access, the terminal device can perform service transmission. Based on this, Figure 9 In this context, target time resources are followed by business resources. This is understandable. Figure 9 The examples shown are merely illustrative and do not constitute a limitation on the embodiments of this application.

[0105] For example, the value of the sixth duration mentioned above can be greater than or equal to 0. Alternatively, the value of the sixth duration mentioned above can be greater than or equal to the fourth threshold. The fourth threshold is the time point from the start time of the time domain resources of the PDCCH of the SIB19 to the end time of the SI window of SIB19 (e.g., Figure 9The duration between the third time point shown. If the value of the sixth duration is the fourth threshold, then the starting point of the target time resource is the end point of the SI window of the SIB19. If the value of the sixth duration is greater than the fourth threshold, this is mainly because the communication system has one or more delays such as scheduling delay, signal transmission delay, or terminal-side signal processing delay, which makes it impossible for the network device to receive the random access signal immediately after sending the SIB19. In addition, on the terminal side, even if the random access is initiated from the end point of the SI window of the SIB19, the network device cannot immediately receive the random access signal. Therefore, the sixth duration can be configured to be greater than the fourth threshold. This allows the terminal device to initiate random access after a period of time after the end point of the SI window of the SIB19. This achieves precise configuration of the access resources of the terminal device and further reduces excessive reservation of access resources to reduce resource waste. It is understood that this is only an example and does not constitute a limitation on the embodiments of this application. The specific value of the sixth duration can be set according to the actual application needs, and the embodiments of this application do not specifically limit it.

[0106] For example, since the SI window of SIB19 and the time-domain resources of the PDCCH scheduling SIB19 are configured by the network device, the network device can calculate the fourth threshold. This allows the network device to refer to the fourth threshold to determine the sixth duration, and then indicate the sixth duration through the first configuration information. Furthermore, the PDCCH scheduling SIB19 is a candidate PDCCH in the search space of the PDCCH, and the network device allocates this search space to the terminal device. After the terminal device successfully decodes the PDCCH scheduling SIB19, it can combine the search space to determine the time-domain resources of the PDCCH scheduling SIB19. This allows the start time point of the time-domain resources to be determined. Therefore, the terminal device can determine the start point of the target time resource based on the sixth duration indicated by the first configuration information.

[0107] In one example, the aforementioned time reference point can be the cutoff time of the time-domain resources for scheduling the PDCCH of SIB19. The starting point of the aforementioned target time resource can be the time point seven hours after the cutoff time of the PDCCH's time-domain resources. For ease of understanding, please refer to the example provided. Figure 10 As shown. In Figure 10 The diagram illustrates the temporal positional relationship between the SI window of SIB19, the temporal resources of the PDCCH scheduling SIB19, and the target temporal resources. It can be seen that the temporal resources of this PDCCH are within the SI window of SIB19. The deadline of the temporal resources of this PDCCH (e.g., the deadline time) is shown in the diagram. Figure 10 The first point in time) and the starting point of the target time resource (e.g. Figure 10 The second time point) is spaced at the seventh time interval. This target time resource is used for random access by terminal devices. After successful random access, the terminal device can perform service transmission. Based on this, Figure 10 In this context, target time resources are followed by business resources. This is understandable. Figure 10 The examples shown are merely illustrative and do not constitute a limitation on the embodiments of this application.

[0108] For example, the value of the seventh duration mentioned above can be greater than or equal to 0. Alternatively, the value of the seventh duration mentioned above can be greater than or equal to the fifth threshold. The fifth threshold is the cutoff time of the time domain resources of the PDCCH of the SIB19 scheduling, up to the cutoff time of the SI window of SIB19 (e.g., Figure 10 The duration between the third time point shown. If the value of the seventh duration is the fifth threshold, then the starting point of the target time resource is the end point of the SI window of the SIB19. If the value of the seventh duration is greater than the fifth threshold, this is mainly because the communication system has one or more delays such as scheduling delay, signal transmission delay, or terminal-side signal processing delay, which makes it impossible for the network device to receive the random access signal immediately after sending the SIB19. In addition, on the terminal side, even if the random access is initiated from the end point of the SI window of the SIB19, the network device cannot immediately receive the random access signal. Therefore, the seventh duration can be configured to be greater than the fifth threshold. This allows the terminal device to initiate random access after a period of time after the end point of the SI window of the SIB19. This achieves precise configuration of the access resources of the terminal device and further reduces excessive reservation of access resources to reduce resource waste. It is understood that this is only an example and does not constitute a limitation on the embodiments of this application. The specific value of the seventh duration can be set according to the actual application needs, and the embodiments of this application do not specifically limit it.

[0109] For example, since the SI window of SIB19 and the time-domain resources of the PDCCH scheduling SIB19 are configured by the network device, the network device can calculate the fifth threshold. This allows the network device to refer to the fifth threshold to determine the seventh duration, and then indicate the seventh duration through the first configuration information. Furthermore, the PDCCH scheduling SIB19 is a candidate PDCCH in the search space of the PDCCH, and the network device allocates this search space to the terminal device. After the terminal device successfully decodes the PDCCH scheduling SIB19, it can determine the time-domain resources of the PDCCH scheduling SIB19 by combining the search space. This allows the determination of the cutoff time point of the time-domain resources. Therefore, the terminal device can determine the start point of the target time resource based on the seventh duration indicated by the first configuration information.

[0110] In one example, the aforementioned time reference point can be the starting time point of the time-domain resources for transmitting the aforementioned SSB. In a specific implementation, the SSB is sent to the terminal device by the network device before broadcasting the aforementioned SIB1, so as to enable the terminal device to synchronize with the network device. Based on this, the starting point of the aforementioned target time resource can be the time point eight hours after the starting time point of the time-domain resources of the SSB. For ease of understanding, please refer to the example provided. Figure 11 As shown. In Figure 11 The diagram illustrates the temporal positional relationship between the time-domain resources for transmitting the SSB, the time-domain resources for transmitting SIB1, the SI window of SIB19, and the target time resources. It can be seen that the SSB is transmitted before SIB1. The SI window of SIB19 follows the transmission of the time-domain resources of SIB1 because the SI window of SIB19 is configured by SIB1. The start time point of the time-domain resources of the SSB (e.g., ...) Figure 11 The first point in time) and the starting point of the target time resource (e.g. Figure 11 The second time point) is spaced at the eighth time interval. This target time resource is used for random access by terminal devices. After successful random access, the terminal device can perform service transmission. Based on this, Figure 11 In this context, target time resources are followed by business resources. This is understandable. Figure 11 The examples shown are merely illustrative and do not constitute a limitation on the embodiments of this application.

[0111] For example, the value of the eighth duration mentioned above can be greater than or equal to 0. The specific value can be set according to the actual application needs, and the embodiments of this application are not specifically limited.

[0112] For example, the network device can configure the time-domain resources for transmitting the SSB to the terminal device, so that the terminal device can receive the SSB in that time-domain resources. Therefore, the terminal device can know the start time of the time-domain resources for the SSB. Furthermore, the terminal device can determine the start time of the target time resource based on the first configuration information.

[0113] In one example, the aforementioned time reference point can be the cutoff time for transmitting the time-domain resources of the aforementioned SSB. The starting point of the aforementioned target time resource can be a time point nine hours after the cutoff time of the time-domain resources of the SSB. For ease of understanding, please refer to the example provided. Figure 12 As shown. In Figure 12 The diagram illustrates the temporal positional relationship between the time-domain resources of the SSB transmission, the time-domain resources of SIB1 transmission, the SI window of SIB19, and the target time resources. It can be seen that the cutoff time point of the time-domain resources of this SSB (e.g., ...) Figure 12 The first point in time) and the starting point of the target time resource (e.g. Figure 12 The second time point) is spaced at the ninth time interval. This target time resource is used for random access by terminal devices. After successful random access, the terminal device can perform service transmission. Based on this, Figure 12 In this context, target time resources are followed by business resources. This is understandable. Figure 12 The examples shown are merely illustrative and do not constitute a limitation on the embodiments of this application.

[0114] For example, the value of the ninth duration mentioned above can be greater than or equal to 0. The specific value can be set according to the actual application needs, and the embodiments of this application are not specifically limited.

[0115] For example, the network device can configure the time-domain resources for transmitting the SSB to the terminal device, so that the terminal device can receive the SSB in the time-domain resources. Therefore, the terminal device can know the expiration time of the time-domain resources of the SSB. Then, the terminal device can determine the start point of the target time resource based on the first configuration information.

[0116] In one example, the aforementioned time reference point could be the moment when the terminal device receives the aforementioned SSB. Therefore, the starting point of the aforementioned target time resource could be the moment when the terminal device receives the aforementioned SSB, or a preset time point after that moment. For details, please refer to the foregoing description; further elaboration is omitted here.

[0117] In one example, the aforementioned time reference point could be the moment when the terminal device receives the SIB19. Therefore, the starting point of the target time resource could be the moment the terminal device receives the SIB19, or a preset time point after that moment. For details, please refer to the foregoing description; further elaboration is omitted here.

[0118] It is understood that the time reference points and starting points of the target time resources described above are merely examples and do not constitute a limitation on the embodiments of this application. As can be seen from the above description, a primary objective of the embodiments of this application is to centrally control the target time resources within a specific time period. This specific time period is as close as possible to the time period after the terminal device receives SIB19 and / or SSB. Therefore, in some possible implementations, the aforementioned time reference point can be any clearly defined time reference point among the time-domain resources used for transmitting SIB19 and / or SSB or the time-domain resources used for scheduling SIB19 and / or SSB; these will not be elaborated upon in the embodiments of this application.

[0119] In one possible implementation, after determining the start point of the target time resource, it is also necessary to determine the duration or end point of the target time resource before the target time resource can be finally determined. For example, the duration or end point of the target time resource can be agreed upon through a protocol or indicated by the network device to the terminal device. An example is described below.

[0120] In one example, the cutoff time for the aforementioned target time resource can be the time point ten hours after the terminal device receives the aforementioned SSB. The value of this tenth hour can be set according to actual application needs, for example, it could be 10 milliseconds or 20 milliseconds, etc., and this application embodiment does not specifically limit it. For ease of understanding, please refer to the exemplary examples. Figure 13 .

[0121] exist Figure 13 The diagram illustrates the temporal positional relationship between the terminal device receiving the SSB, transmitting the time-domain resources of SIB1, the SI window of SIB19, and the target time resources. It shows that SIB1 is transmitted only after the terminal device receives the SSB. The SI window of SIB19 is configured after the time-domain resources of SIB1 are transmitted, as the SI window of SIB19 is configured by SIB1. The starting point of the target transmission resource (e.g., ...) Figure 13 The determination of the first time point shown (the location of which is only for illustration) can be referred to the foregoing introduction, and will not be repeated here. Figure 13 The third time point shown can be the deadline for the target time resource. Figure 13 The second time point shown could be the moment when the terminal device receives the SSB. The second time point and the third time point are separated by a ten-hour interval. Figure 13As can be seen, the duration of the target time resource is the time period between the first time point and the third time point. In one example, if the starting point of the target time resource is the moment the terminal device receives the SSB, that is, the starting point of the target time resource is... Figure 13 The second time point is shown. Therefore, the duration of this target time resource is within ten hours after the terminal device receives the aforementioned SSB. This is the time period between the second and third time points. It can be understood that... Figure 13 The examples shown are merely illustrative and do not constitute a limitation on the embodiments of this application.

[0122] For example, if the duration or expiration time of the aforementioned target time resource is agreed upon by the protocol, then the protocol can stipulate that the time point after the terminal device receives the SSB and then ten hours later is the expiration time for random access. Alternatively, if the duration of the target time resource is within ten hours after the terminal device receives the SSB, then the protocol can stipulate that the random access resource is available or effective for the terminal device within ten hours after receiving the SSB. That is, within this tenth hour, the terminal device can initiate access through the random access resource configured by the network device. In specific implementation, the terminal device learns the duration or expiration time of the aforementioned target time resource based on its own deployed protocol.

[0123] For example, if the duration or expiration time of the aforementioned target time resource is indicated by the network device to the terminal device, the network device can send indication information to the terminal device. This indication information indicates that the expiration time for random access is the tenth time interval after the terminal device receives the SSB. Alternatively, if the duration of the target time resource is within the tenth time interval after the terminal device receives the SSB, then this indication information can indicate that the random access resource is available or effective for the terminal device within the tenth time interval after receiving the SSB.

[0124] In one example, the cutoff time of the aforementioned target time resource can be the time point eleven hours after the terminal device receives the aforementioned SIB19. The value of this eleventh hour can be set according to actual application needs, for example, it can be 10 milliseconds or 20 milliseconds, etc., and this application embodiment does not specifically limit it. For ease of understanding, please refer to the exemplary examples. Figure 14 .

[0125] exist Figure 14 The diagram illustrates the temporal positional relationship between the terminal device receiving SIB19, the SI window of SIB19, and the target time resource. It shows that the terminal device receives SIB19 within the SI window of SIB19. The starting point of the target transmission resource (e.g., Figure 14 The determination of the first time point shown (the location of which is only for illustration) can be referred to the foregoing introduction, and will not be repeated here. Figure 14 The third time point shown can be the deadline for the target time resource. Figure 14 The second time point shown could be the moment when the terminal device receives SIB19. The interval between this second time point and the third time point is eleven hours. Figure 14 As can be seen, the duration of the target time resource is the time period between the first time point and the third time point. In one example, if the starting point of the target time resource is the moment the terminal device receives the SIB19, that is, the starting point of the target time resource is... Figure 14 The second time point is shown. Therefore, the duration of this target time resource is the eleventh time period after the terminal device receives the aforementioned SIB19. This is the time period between the second and third time points. It can be understood that... Figure 14 The examples shown are merely illustrative and do not constitute a limitation on the embodiments of this application.

[0126] For example, if the duration or expiration time of the aforementioned target time resource is agreed upon by the protocol, then the protocol can stipulate that the time point after the terminal device receives SIB19 and then eleven hours later is the expiration time for random access. Alternatively, if the duration of the target time resource is within the eleventh hour after the terminal device receives SIB19, then the protocol can stipulate that the random access resource is available or effective for the terminal device within the eleventh hour after receiving SIB19. That is, within this eleventh hour, the terminal device can initiate random access. In other words, in a specific implementation, the terminal device learns the duration or expiration time of the aforementioned target time resource based on its own deployed protocol.

[0127] For example, if the duration or cutoff time of the aforementioned target time resource is indicated by the network device to the terminal device, the network device can send indication information to the terminal device. This indication information indicates that the cutoff time for random access is the eleventh time elapsed after the terminal device receives SIB19. Alternatively, if the duration of the target time resource is within the eleventh time elapsed after the terminal device receives SIB19, then this indication information can indicate that the random access resource is available or effective within the eleventh time elapsed after receiving SIB19.

[0128] In one possible implementation, the network device can first configure periodic random access resources according to existing standards. Then, a portion of the random access resources configured in each period is selected for random access by the terminal device. This portion of resources can be simply referred to as the active resources. That is, the active resources are the resources in the random access resources configured in each period that the terminal device is allowed to use for random access. The resources in the random access resources configured in each period other than the active resources can be simply referred to as inactive resources. That is, the inactive resources are not the random access resources for the terminal device.

[0129] For example, the aforementioned effective resources may include time-domain resources and frequency-domain resources. The time-domain resources in the effective resources can be understood as the aforementioned target time resources. It can be understood that the time-domain resources in the effective resources are a time window of the time-domain resources included in the random access resources configured in each period. This time window can be simply referred to as the effective resource window. That is, the time resources for random access by the terminal device are a time window of the time-domain resources included in the random access resources configured in each period. Similarly, the effective resources can be determined by configuring the start time point and duration, or by configuring the start time point and end time point. The start time point of the effective resources is the time-domain time point in the random access resources configured in each period. The specific implementation of configuring the start time point and duration (or end time point) of the effective resources can be referred to the relevant description of configuring the start time point and duration (or end time point) of the target time resources, which will not be repeated here.

[0130] To better understand the implementation of this application, the following example illustrates how a network device configures random access resources for a period to a terminal device. For instance, in a specific implementation, the terminal device can send a random access request to the network device. The network device responds to this request by sending a random access response to the terminal device. This random access response includes random access resources, which belong to resources within a period. For instance, the random access response can indicate the specific random access resource through the PRACH configuration index, preamble format, period of the random access resource, frame number of the period's starting point, subframe number of the random access resource within the period, and start symbol within each subframe, as shown in Table 1 above.

[0131] After receiving the aforementioned random access response, the terminal device can obtain the available random access resources within a period. Then, the network device can send the aforementioned first configuration information to the terminal device to indicate the starting point of the effective resource for random access. The determination of this starting point can be referred to the foregoing description and will not be repeated here. Then, the duration or expiration time of the effective resource is indicated to the terminal device by protocol agreement or by the network device. The specific implementation can also be referred to the foregoing description and will not be repeated here.

[0132] One possible implementation can be exemplified by [example to be provided]. Figure 15 . Figure 15 The example of two cycles illustrates the temporal distribution of active and inactive resources in each cycle. Figure 15 Taking period 1 as an example, it can be seen that period 1 can be configured with various resources such as the SIB19 SI window, service resources, and random access resources for terminal devices. The random access resources of this terminal device are the aforementioned effective resources. The time domain window corresponding to this effective resource is the aforementioned effective resource window, such as... Figure 15 As shown. In addition to the active resource window, Period 1 also includes an inactive resource window. Random access resources in the inactive resource window are not used for random access by this terminal device. In one possible implementation, the random access resources in the inactive resource window can be configured for contention-based or non-contention-based random access by other terminal devices. This fully utilizes resources and reduces resource waste.

[0133] For example, the aforementioned active and inactive resource windows can also be periodic. For instance, the active resource window could be a time window at the same position in each of the aforementioned periods; similarly, the inactive resource window could be a time window at the same position in each of the aforementioned periods. For example, see... Figure 15 The effective and ineffective resource windows in Period 1 and Period 2 are shown. For example, the periods of the effective and ineffective resource windows are similar to those of discontinuous reception (DRX) periods. The period when the DRX period is off is the effective resource window, and conversely, the period when the DRX period is on is the ineffective resource window.

[0134] It is understandable that the above Figure 15 The illustration shown is merely illustrative and does not constitute a limitation on the embodiments of this application.

[0135] In one possible implementation, the period in the aforementioned periodic random access resources can be, for example, an SSB period or other custom time periods, which are not limited in this embodiment. In another possible implementation, the custom time period can be configured to be shorter, for example, less than the SSB period. Each period can be configured with one of the aforementioned active resource windows, thereby configuring more intensive random access resources for the terminal device. This allows the terminal device to access the network side promptly, improving the user experience.

[0136] S302, The terminal device receives the first configuration information.

[0137] Based on the above description, the terminal device receives the first configuration information. Based on the indication of this first configuration information, the start point of the target time resource can be determined. Then, the duration or end point of the target time resource is determined through protocol agreement or network device indication. This further determines the random access resources that the terminal device can use. For details, please refer to the above description; it will not be repeated here.

[0138] S303. The terminal device sends a random access signal to the network device during the time resources starting from the start point indicated by the first configuration information.

[0139] After the aforementioned terminal device determines the available random access resources, it can send a random access signal to the network device to implement random access.

[0140] S304. The network device receives the random access signal from the terminal device in the time resources starting from the above-mentioned starting point.

[0141] The network device can receive the random access signal from the terminal device from the random access resources available to the terminal device. Then, it can complete the access process for the terminal device in response to the random access signal.

[0142] In one possible implementation, although the above implementation configures random access resources for the terminal device, the network device may also trigger non-contention-based random access for the terminal device via PDCCH. To enable the terminal device to respond quickly to this non-contention-based random access, in addition to the random access resources configured for the terminal device, the network device can also reserve other access resources for the terminal device, allowing it to quickly perform this non-contention-based random access.

[0143] For example, a network device can be configured with dual-cycle random access resources. In one cycle, random access resources active for a specific time period are used by the terminal device to implement contention-based random access; specific configuration details can be found in the corresponding descriptions of the foregoing embodiments, and will not be repeated here. In the other cycle, non-contention-based random access for the terminal device can be configured. For example, this can be achieved directly through a larger cycle of random access resources. Alternatively, an extension factor can be added to the existing maximum random access cycle; this extension factor can be, for example, an extended time window. Then, the non-contention-based random access resources for the terminal device are configured within this extended time window. For example, the current integrated access and backhaul (IAB) communication mode supports the configuration of an extension factor to extend the existing random access resource cycle. Further details are not provided in the embodiments of this application.

[0144] The above implementation ensures that when the terminal device needs to initiate a non-contention-based random access for some reason, there are still corresponding access resources available for this non-contention-based access. This improves access efficiency and user experience.

[0145] In summary, in satellite communication scenarios, terminal devices only initiate access after obtaining ephemeris data from the received SIB19 and / or completing synchronization based on the received SSB. At other times, even if random access resources are available, access will not be initiated. Therefore, the above solution determines the starting point of random access resources for the terminal device based on the SIB19 and / or SSB, concentrating random access resources within a reasonable timeframe, reducing unnecessary reservations and occupancy of other access resources, and improving resource utilization efficiency.

[0146] The following describes the communication device provided in the embodiments of this application.

[0147] This application divides the communication device into functional modules according to the above-described method embodiments. For example, each function can be divided into its own functional modules, or two or more functions can be integrated into one processing module. The integrated modules can be implemented in hardware or as software functional modules. It should be noted that the module division in this application is illustrative and represents only one logical functional division; other division methods may be used in actual implementation. The following will combine... Figures 16 to 18 The communication apparatus of the present application is described in an exemplary embodiment.

[0148] Figure 16 This is a schematic diagram of the structure of a communication device provided in an embodiment of this application, such as... Figure 16 As shown, the communication device includes a processing module 1601 and a transceiver module 1602. The transceiver module 1602 can implement corresponding communication functions, and the processing module 1601 is used to implement corresponding processing functions. The transceiver module 1602 can also be referred to as an interface, communication interface, or communication module, etc.

[0149] In some embodiments of this application, the communication device can be used to perform the actions performed by the network device in the above method embodiments. The communication device can be the network device itself or a chip or functional module configurable within the network device. The transceiver module 1602 is used to perform transceiver-related operations of the network device in the above method embodiments, and the processing module 1601 is used to perform processing-related operations of the network device in the above method embodiments.

[0150] For example, the transceiver module 1602 can be used to send first configuration information to the terminal device. This first configuration information indicates the starting point of the time resources for random access by the terminal device; the starting point is determined based on System Information Block (SIB19) and / or Synchronization Signal Block (SSB). The transceiver module 1602 can also be used to receive random access signals from the terminal device within the time resources starting from this starting point. Specific implementation details can be found in the foregoing. Figure 3 The relevant descriptions of steps S301 and S304 shown are not repeated here.

[0151] Reuse Figure 16 In other embodiments of this application, Figure 16 The communication device shown can be used to perform the actions performed by the terminal device in the above method embodiments. This communication device can be the terminal device itself or a chip or functional module configurable within the terminal device. The transceiver module 1602 is used to perform transceiver-related operations of the terminal device in the above method embodiments, and the processing module 1601 is used to perform processing-related operations of the terminal device in the above method embodiments.

[0152] For example, the transceiver module 1602 can be used to receive first configuration information; the first configuration information indicates the starting point of the time resources for random access of the terminal device; the starting point is determined based on System Information Block (SIB19) and / or Synchronization Signal Block (SSB). The transceiver module 1602 can also be used to transmit random access signals in the time resources starting from the starting point. Specific implementation details can be found in the foregoing. Figure 3 The details of steps S302 and S303 shown are not repeated here.

[0153] Optionally, in the above embodiments, the communication device may further include a storage module, which can be used to store instructions and / or data. The processing module 1601 can read the instructions and / or data in the storage module so that the communication device can implement the aforementioned method embodiments.

[0154] The specific descriptions of the transceiver module and processing module shown in the above embodiments are merely examples. For the specific functions or execution steps of the transceiver module and processing module, please refer to the above method embodiments, which will not be described in detail here.

[0155] The communication device according to the embodiments of this application has been described above. The following describes the possible product forms of the communication device. Any device possessing the above-described... Figure 16 Any form of the communication device described herein falls within the protection scope of the embodiments of this application. The following description is merely illustrative and does not limit the product form of the communication device in the embodiments of this application to this.

[0156] In one possible implementation, Figure 16In the communication device shown, the processing module 1601 can be one or more processors, and the transceiver module 1602 can be a transceiver, or the transceiver module 1602 can also be a transmitting module and a receiving module. The transmitting module can be a transmitter, and the receiving module can be a receiver. The transmitting module and the receiving module are integrated into one device, such as a transceiver. In the embodiments of this application, the processor and the transceiver can be coupled, etc., and the connection method between the processor and the transceiver is not limited in the embodiments of this application. In the process of executing the above method, the process of sending information in the above method can be understood as the process of the processor outputting the above information. When outputting the above information, the processor outputs the above information to the transceiver so that the transceiver can transmit it. After the above information is output by the processor, it may need to undergo other processing before reaching the transceiver. Similarly, the process of receiving information in the above method can be understood as the process of the processor receiving the input above information. When the processor receives the input information, the transceiver receives the above information and inputs it into the processor. Furthermore, after the transceiver receives the above information, the above information may need to undergo other processing before being input into the processor.

[0157] like Figure 17 As shown, the communication device 170 includes one or more transceivers 1710 and a processor 1720.

[0158] For example, transceiver 1710 is used to perform such Figure 16 The transceiver module 1602 shown implements the functions or steps, and the processor 1720 is used to execute such functions or steps. Figure 16 The processing module 1601 shown illustrates the functions or steps implemented by this module. For detailed information on the processor 1720 and transceiver 1710, please refer to [link / reference needed]. Figure 16 Alternatively, the method embodiments shown above will not be described in detail here.

[0159] exist Figure 17 In various implementations of the communication apparatus shown, the transceiver may include a receiver for performing a receiving function (or operation) and a transmitter for performing a transmitting function (or operation). The transceiver is also used to communicate with other devices / appliances via a transmission medium.

[0160] Optionally, the communication device 170 may further include one or more memories 1730 for storing program instructions and / or data. The memory 1730 is coupled to the processor 1720. The coupling in this embodiment is an indirect coupling or communication connection between devices, units, or modules, and can be electrical, mechanical, or other forms, used for information exchange between devices, units, or modules. The processor 1720 may operate in conjunction with the memory 1730. The processor 1720 may execute program instructions stored in the memory 1730. Optionally, at least one of the above-mentioned memories may be included in the processor.

[0161] This application embodiment does not limit the specific connection medium between the transceiver 1710, processor 1720, and memory 1730. This application embodiment... Figure 17 The memory 1730, processor 1720, and transceiver 1710 are connected via a bus 1740. Figure 17 The connections between other components are shown in bold and are for illustrative purposes only, not as limiting information. The bus can be divided into address bus, data bus, control bus, etc. For ease of illustration, Figure 17 The bus is represented by a single thick line, but this does not mean that there is only one bus or one type of bus.

[0162] In the embodiments of this application, the processor may be a general-purpose processor, a digital signal processor, an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc., and can implement or execute the various methods, steps, and logic block diagrams disclosed in the embodiments of this application. The general-purpose processor may be a microprocessor or any conventional processor. The steps of the methods disclosed in the embodiments of this application can be directly manifested as being executed by a hardware processor, or being executed by a combination of hardware and software modules within the processor.

[0163] In this application embodiment, the memory may include, but is not limited to, non-volatile memory such as hard disk drive (HDD) or solid-state drive (SSD), random access memory (RAM), erasable programmable read-only memory (EPROM), read-only memory (ROM), or compact disc read-only memory (CD-ROM), etc. Memory is any storage medium capable of carrying or storing program code in the form of instructions or data structures, and capable of being read and / or written by a computer (such as the communication device shown in this application), but is not limited to this. The memory in this application embodiment may also be a circuit or any other device capable of implementing storage functions, used to store program instructions and / or data.

[0164] For example, processor 1720 is mainly used to process communication protocols and communication data, control the entire communication device, execute software programs, and process data from the software programs. Memory 1730 is mainly used to store software programs and data. Transceiver 1710 may include control circuitry and an antenna. The control circuitry is mainly used for converting baseband signals to radio frequency signals and processing radio frequency signals. The antenna is mainly used for transmitting and receiving radio frequency signals in the form of electromagnetic waves. Input / output devices, such as touchscreens, displays, and keyboards, are mainly used to receive user input data and output data to the user.

[0165] When the communication device is powered on, the processor 1720 can read the software program in the memory 1730, interpret and execute the instructions of the software program, and process the data of the software program. When data needs to be transmitted wirelessly, the processor 1720 performs baseband processing on the data to be transmitted and outputs the baseband signal to the radio frequency (RF) circuit. The RF circuit processes the baseband signal and transmits the RF signal outward in the form of electromagnetic waves through the antenna. When data is sent to the communication device, the RF circuit receives the RF signal through the antenna, converts the RF signal into a baseband signal, and outputs the baseband signal to the processor 1720. The processor 1720 converts the baseband signal into data and processes the data.

[0166] In another implementation, the radio frequency circuitry and antenna can be set up independently of the processor performing baseband processing. For example, in a distributed scenario, the radio frequency circuitry and antenna can be arranged remotely, independent of the communication device.

[0167] It is understood that the communication device shown in the embodiments of this application may also have more than Figure 17This application does not limit the use of other components or other related elements. The methods performed by the processor and transceiver shown above are merely examples; the specific steps performed by the processor and transceiver can be found in the methods described above.

[0168] In another possible implementation Figure 16 In the communication device shown, the processing module 1601 can be one or more logic circuits, and the transceiver module 1602 can be an input / output interface, or a communication interface, or an interface circuit, or an interface, etc. Alternatively, the transceiver module 1602 can also be a transmitting module and a receiving module; the transmitting module can be an output interface, and the receiving module can be an input interface, integrated into one module, such as an input / output interface. Figure 18 As shown, Figure 18 The communication device shown includes logic circuit 1801 and interface 1802. That is, the processing module 1601 can be implemented using logic circuit 1801, and the transceiver module 1602 can be implemented using interface 1802. The logic circuit 1801 can be a chip, processing circuit, integrated circuit, or system-on-chip (SoC) chip, etc., and the interface 1802 can be a communication interface, input / output interface, pins, etc. For example, Figure 18 Taking the aforementioned communication device as an example, the chip includes a logic circuit 1801 and an interface 1802.

[0169] In this embodiment, the logic circuit and the interface can also be coupled to each other. The specific connection method between the logic circuit and the interface is not limited in this embodiment. For example, the logic circuit 1801 can be used to perform... Figure 16 The interface 1802 can be used to execute the functions or steps implemented by the processing module 1601 shown. Figure 16 The transceiver module 1602 shown illustrates the functions or steps implemented by this module. For detailed information on the logic circuit 1801 and interface 1802, please refer to [link / reference needed]. Figure 16 Alternatively, the method embodiments shown above will not be described in detail here.

[0170] For example, Figure 18 The chip shown may also include memory.

[0171] It is understood that the communication device shown in the embodiments of this application can implement the method provided in the embodiments of this application in hardware form or in software form, etc., and the embodiments of this application do not limit it in this way.

[0172] for Figure 18 For specific implementations of the various embodiments shown, please refer to the above embodiments, which will not be described in detail here.

[0173] This application also provides a wireless communication system, which includes a network device and a terminal device, and the network device and the terminal device can be used to perform the methods in any of the foregoing embodiments.

[0174] In addition, this application also provides a computer program for implementing the operations and / or processes performed by a network device in the method provided in this application.

[0175] This application also provides a computer program for implementing the operations and / or processes (such as receiving feedback information) performed by a terminal device in the method provided in this application.

[0176] This application also provides a computer-readable storage medium storing computer code that, when executed on a computer, causes the computer to perform the operations and / or processes performed by a network device in the method provided in this application.

[0177] This application also provides a computer-readable storage medium storing computer code that, when executed on a computer, causes the computer to perform the operations and / or processes performed by a terminal device in the method provided in this application.

[0178] This application also provides a computer program product, which includes computer code or a computer program that, when run on a computer, causes the operations and / or processes performed by a network device in the method provided in this application to be executed.

[0179] This application also provides a computer program product, which includes computer code or a computer program that, when run on a computer, causes the operations and / or processes performed by a terminal device in the method provided in this application to be executed.

[0180] In the 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 modules is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple modules or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the couplings or direct couplings or communication connections shown or discussed may be indirect couplings or communication connections through some interfaces, devices, or modules, or they may be electrical, mechanical, or other forms of connection.

[0181] The modules described as separate components may or may not be physically separate. The components shown as modules may or may not be physical modules; that is, they may be located in one place or distributed across multiple network modules. Some or all of the modules can be selected according to actual needs to achieve the technical effects of the solutions provided in the embodiments of this application.

[0182] Furthermore, the functional modules in the various embodiments of this application can be integrated into one processing module, or each module can exist physically separately, or two or more modules can be integrated into one module. The integrated modules described above can be implemented in hardware or as software functional modules.

[0183] If the integrated module is implemented as a software functional module and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a readable storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned readable storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0184] 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 technical scope 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, The method includes: The network device sends first configuration information to the terminal device; the first configuration information indicates the starting point of the time resources that the terminal device randomly accesses; the starting point is determined based on system information block SIB19 and / or synchronization signal block SSB. The network device receives the random access signal from the terminal device within a time resource starting from the stated starting point.

2. The method according to claim 1, characterized in that, The starting point is the time point after a first duration, starting from the first reference point; the first reference point is the end time point of the system information window of SIB19; or, The starting point is the time point after a second duration following the second reference point; the second reference point is the starting time point of the SIB19 system information window; or... The starting point is the time point after the third time interval following the third reference point; the third reference point is the time domain start time point of the first SIB19 transmitted in the system information window of the SIB19.

3. The method according to claim 2, characterized in that, The first duration is the uplink data scheduling delay at the cell level.

4. The method according to claim 1, characterized in that, The starting point is the time point after the fourth reference point and a fourth time interval; the fourth reference point is the starting time point of the search space for scheduling the Physical Downlink Control Channel (PDCCH) of SIB19; or, The starting point is the time point after the fifth reference point and five time intervals; the fifth reference point is the cutoff time point for the search space of the PDCCH of SIB19; or, The starting point is the time point six time intervals after the sixth reference point; the sixth reference point is the starting time point for sending the time-domain resources for scheduling the PDCCH of SIB19; or, The starting point is the time point seven time intervals after the seventh reference point; the seventh reference point is the cutoff time point for sending and scheduling the time-domain resources of the PDCCH of SIB19; or, The starting point is the time point eight time intervals after the eighth reference point; the eighth reference point is the starting time point for transmitting the time-domain resources of the SSB; or, The starting point is the time point after the ninth reference point and the ninth time interval; the ninth reference point is the cutoff time point for transmitting the time domain resources of the SSB.

5. The method according to any one of claims 1-4, characterized in that, The cutoff time for the random access time resources of the terminal device is the time point after the terminal device receives the SSB, which is ten hours later.

6. The method according to any one of claims 1-5, characterized in that, The cutoff time for the random access time resources of the terminal device is: the time point after eleven hours from the time the terminal device receives the SIB19.

7. The method according to any one of claims 1-6, characterized in that, The starting point is a time point in the random access resources of a period configured by the network device, and the time resource for random access by the terminal device is the first time window in the time domain resources included in the random access resources of the period.

8. The method according to claim 7, characterized in that, The time-domain resource also includes a second time window, which is configured for non-contentionable random access.

9. The method according to any one of claims 1-8, characterized in that, The method further includes: The network device configures non-contentionable random access resources for the terminal device.

10. A communication method, characterized in that, The method includes: The terminal device receives first configuration information; the first configuration information indicates the starting point of the time resources randomly accessed by the terminal device; the starting point is determined based on system information block SIB19 and / or synchronization signal block SSB. The terminal device sends a random access signal in the time resources starting from the starting point.

11. The method according to claim 10, characterized in that, The starting point is the time point after a first duration, starting from the first reference point; the first reference point is the end time point of the system information window of SIB19; or, The starting point is the time point after a second duration following the second reference point; the second reference point is the starting time point of the SIB19 system information window; or... The starting point is the time point after the third time interval following the third reference point; the third reference point is the time domain start time point of the first SIB19 transmitted in the system information window of the SIB19.

12. The method according to claim 11, characterized in that, The first duration is the uplink data scheduling delay at the cell level.

13. The method according to claim 10, characterized in that, The starting point is the time point after the fourth reference point and a fourth time interval; the fourth reference point is the starting time point of the search space for scheduling the Physical Downlink Control Channel (PDCCH) of SIB19; or, The starting point is the time point after the fifth reference point and a fifth time interval; the fifth reference point is the cutoff time point for the search space of the Physical Downlink Control Channel (PDCCH) for scheduling the SIB19; or, The starting point is the time point six time intervals after the sixth reference point; the sixth reference point is the starting time point for transmitting the time-domain resources of the Physical Downlink Control Channel (PDCCH) for scheduling the SIB19; or... The starting point is the time point seven time intervals after the seventh reference point; the seventh reference point is the cutoff time point for transmitting the time-domain resources of the Physical Downlink Control Channel (PDCCH) scheduling the SIB19; or... The starting point is the time point eight time intervals after the eighth reference point; the eighth reference point is the starting time point for transmitting the time-domain resources of the SSB; or, The starting point is the time point after the ninth reference point and the ninth time interval; the ninth reference point is the cutoff time point for transmitting the time domain resources of the SSB.

14. The method according to any one of claims 1-13, characterized in that, The cutoff time for the random access time resources of the terminal device is the time point after the terminal device receives the SSB, which is ten hours later.

15. The method according to any one of claims 10-14, characterized in that, The cutoff time for the random access time resources of the terminal device is: the time point after eleven hours from the time the terminal device receives the SIB19.

16. The method according to any one of claims 10-15, characterized in that, The starting point is a time point in the random access resources of a period configured by the network device, and the time resource for random access by the terminal device is the first time window in the time domain resources included in the random access resources of the period.

17. The method according to claim 16, characterized in that, The time-domain resource also includes a second time window, which is configured for non-contentionable random access.

18. The method according to any one of claims 10-17, characterized in that, The method further includes: The terminal device receives non-contentionable random access resources configured by the network device.

19. A communication device, characterized in that, It includes a module for performing the method as described in any one of claims 1-9; or, it includes a module for performing the method as described in any one of claims 10-18.

20. A communication device, characterized in that, The method includes a processor and a transceiver, the transceiver being used to receive or transmit signals, and the processor being used to perform the method as described in any one of claims 1-9; or, the processor being used to perform the method as described in any one of claims 10-18.

21. A communication device, characterized in that, The method includes logic circuitry and an interface coupled together; the interface is used for inputting and / or outputting information, and the logic circuitry is used to perform the method as described in any one of claims 1-9; or, the logic circuitry is used to perform the method as described in any one of claims 10-18.

22. A computer-readable storage medium, characterized in that, The computer-readable storage medium is used to store a computer program, which, when executed, performs the method as described in any one of claims 1-9; or, when executed, the computer program performs the method as described in any one of claims 10-18.

23. A computer program product, characterized in that, The computer program product includes a computer program that, when executed, performs the method as described in any one of claims 1-9; or... The computer program product includes a computer program that, when executed, performs the method as described in any one of claims 10-18.

24. A communication system, characterized in that, The communication system includes a network device and a terminal device, the network device being configured to perform the method as described in any one of claims 1-9, and the terminal device being configured to perform the method as described in any one of claims 10-18.

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