Resource acquisition method and device, information sending method and device, terminal and network side equipment

Abstract

The invention discloses a resource obtaining method and device, an information sending method and device, a terminal and network side equipment, and belongs to the technical field of communication, and the resource obtaining method comprises the steps that the terminal obtains time information, and the time information is used for obtaining uplink authorization resources; acquiring an uplink authorization resource according to the time information; wherein the uplink authorization resource is used for the terminal to execute at least one of the following processes: RACH-less (Random Access Channel-less) switching; and uplink synchronization is executed in a RACH-less mode.

Description

Technical Field

[0001] The present application belongs to the field of communication technology, and specifically relates to a resource acquisition, information sending method, device, terminal and network side equipment. Background Art

[0002] In the related art, for the allocation of grants in the random access channel-less (RACH-less) process, it has been proposed to support dynamic allocation and pre-allocated grants, such as type 1 configured grants (Configured Grant, CG). However, the related art has not yet clarified how to enable the terminal to obtain uplink grant resources for the RACH-less process. Summary of the invention

[0003] The embodiments of the present application provide a resource acquisition and information sending method, apparatus, terminal and network side equipment, which can solve the problem of how to enable a terminal to obtain uplink authorization resources for a RACH-less process.

[0004] In a first aspect, a resource acquisition method is provided, which is executed by a terminal, and the method includes:

[0005] The terminal obtains time information, where the time information is used to obtain uplink authorization resources;

[0006] The terminal obtains uplink authorization resources according to the time information;

[0007] The uplink authorization resource is used by the terminal to perform at least one of the following processes:

[0008] RACH-less handover without random access process;

[0009] Uplink synchronization is performed in a RACH-less manner.

[0010] In a second aspect, a method for sending information is provided, which is performed by a network side device, and the method includes:

[0011] The network side device sends fifth information to the terminal; wherein the fifth information is used to obtain uplink authorization resources, and the fifth information includes at least one of the following:

[0012] At least one uplink grant and at least one first time window, there is a corresponding relationship between the at least one uplink grant and the at least one first time window, and each of the uplink grants is related to the first cell;

[0013] At least one second time window.

[0014] In a third aspect, a resource acquisition device is provided, which is applied to a terminal and includes:

[0015] A first acquisition module, used to acquire time information, where the time information is used to acquire uplink authorization resources;

[0016] A second acquisition module, used to acquire uplink authorization resources according to the time information;

[0017] The uplink authorization resource is used by the terminal to perform at least one of the following processes:

[0018] RACH-less handover without random access process;

[0019] Uplink synchronization is performed in a RACH-less manner.

[0020] In a fourth aspect, an information sending device is provided, which is applied to a network side device, including:

[0021] The second sending module is configured to send fifth information to the terminal; wherein the fifth information is used to obtain uplink authorization resources, and the fifth information includes at least one of the following:

[0022] At least one uplink grant and at least one first time window, there is a corresponding relationship between the at least one uplink grant and the at least one first time window, and each of the uplink grants is related to the first cell;

[0023] At least one second time window.

[0024] In a fifth aspect, a terminal is provided, comprising a processor and a memory, wherein the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, the steps of the method described in the first aspect are implemented.

[0025] In a sixth aspect, a terminal is provided, comprising a processor and a communication interface, wherein the processor is used to obtain time information, and the time information is used to obtain uplink authorization resources; uplink authorization resources are obtained according to the time information; the uplink authorization resources are used by the terminal to perform at least one of the following processes: RACH-less switching without random access process; uplink synchronization is performed in a RACH-less manner.

[0026] In the seventh aspect, a network side device is provided, which includes a processor and a memory, wherein the memory stores programs or instructions that can be run on the processor, and when the program or instructions are executed by the processor, the steps of the method described in the second aspect are implemented.

[0027] In the eighth aspect, a network side device is provided, including a processor and a communication interface, wherein the communication interface is used to send fifth information to a terminal; the fifth information is used to obtain uplink authorization resources, and the fifth information includes at least one of the following: at least one uplink authorization and at least one first time window, there is a corresponding relationship between the at least one uplink authorization and the at least one first time window, and each of the uplink authorizations is related to a first cell; at least one second time window.

[0028] In a ninth aspect, a readable storage medium is provided, on which a program or instruction is stored. When the program or instruction is executed by a processor, the steps of the method described in the first aspect are implemented, or the steps of the method described in the second aspect are implemented.

[0029] In the tenth aspect, a wireless communication system is provided, including: a terminal and a network side device, wherein the terminal can be used to execute the steps of the method described in the first aspect, and the network side device can be used to execute the steps of the method described in the second aspect.

[0030] In the eleventh aspect, a chip is provided, comprising a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run a program or instructions to implement the steps of the method described in the first aspect, or to implement the steps of the method described in the second aspect.

[0031] In the twelfth aspect, a computer program / program product is provided, wherein the computer program / program product is stored in a storage medium, and the program / program product is executed by at least one processor to implement the steps of the method described in the first aspect, or to implement the steps of the method described in the second aspect.

[0032] In an embodiment of the present application, the terminal can obtain time information, and obtain uplink authorization resources according to the time information, and the uplink authorization resources are used by the terminal to perform at least one of the following processes: RACH-less switching; performing uplink synchronization in a RACH-less manner. Thus, the terminal can obtain uplink authorization resources related to the RACH-less process. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 is a block diagram of a wireless communication system to which the embodiments of the present application can be applied;

[0034] Figure 2 is a flow chart of a resource acquisition method provided in an embodiment of the present application;

[0035] Figure 3 is a flow chart of an information sending method provided by an embodiment of the present application;

[0036] Figure 4 It is a structural schematic diagram of a resource acquisition device provided in an embodiment of the present application;

[0037] Figure 5 It is a structural schematic diagram of an information sending device provided in an embodiment of the present application;

[0038] Figure 6 It is a structural diagram of a communication device provided in an embodiment of the present application;

[0039] Figure 7 is a schematic diagram of the structure of a terminal provided in an embodiment of the present application;

[0040] Figure 8 It is a structural diagram of a network side device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of this application.

[0042] The terms "first", "second", etc. of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the terms used in this way are interchangeable where appropriate, so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first" and "second" are generally of one type, and the number of objects is not limited, for example, the first object can be one or more. In addition, "or" in the present application represents at least one of the connected objects. For example, "A or B" covers three schemes, namely, Scheme 1: including A but not including B; Scheme 2: including B but not including A; Scheme 3: including both A and B. The character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0043] The term "indication" in this application can be a direct indication (or explicit indication) or an indirect indication (or implicit indication). A direct indication can be understood as the sender explicitly informing the receiver of specific information, operations to be performed, or request results in the sent indication; an indirect indication can be understood as the receiver determining the corresponding information according to the indication sent by the sender, or making a judgment and determining the operation to be performed or the request result according to the judgment result.

[0044] It is worth noting that the technology described in the embodiments of the present application is not limited to the Long Term Evolution (LTE) / LTE-Advanced (LTE-A) system, but can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA) or other systems. The terms "system" and "network" in the embodiments of the present application are often used interchangeably, and the described technology can be used for the systems and radio technologies mentioned above as well as for other systems and radio technologies. The following description describes a New Radio (NR) system for illustrative purposes, and the NR terminology is used in most of the following descriptions, but these technologies can also be applied to systems other than NR systems, such as the 6th generation (6 th Generation, 6G) communication system.

[0045] Figure 1A block diagram of a wireless communication system applicable to an embodiment of the present application is shown. The wireless communication system includes a terminal 11 and a network side device 12. Among them, the terminal 11 can be a mobile phone, a tablet computer (Tablet Personal Computer), a laptop computer (Laptop Computer), a notebook computer, a personal digital assistant (Personal Digital Assistant, PDA), a handheld computer, a netbook, an ultra-mobile personal computer (Ultra-mobile Personal Computer, UMPC), a mobile Internet device (Mobile Internet Device, MID), an augmented reality (Augmented Reality, AR), a virtual reality (Virtual Reality, VR) device, a robot, a wearable device (Wearable Device), an aircraft (flight vehicle), a vehicle-mounted device (Vehicle User Equipment, VUE), a ship-mounted device, a pedestrian terminal (Pedestrian User Equipment, PUE), a smart home (home appliances with wireless communication functions, such as refrigerators, televisions, washing machines or furniture, etc.), a game console, a personal computer (Personal Computer, PC), a teller machine or a self-service machine and other terminal side devices. Wearable devices include: smart watches, smart bracelets, smart headphones, smart glasses, smart jewelry (smart bracelets, smart bracelets, smart rings, smart necklaces, smart anklets, smart anklets, etc.), smart wristbands, smart clothing, etc. Among them, the vehicle-mounted device can also be called a vehicle-mounted terminal, a vehicle-mounted controller, a vehicle-mounted module, a vehicle-mounted component, a vehicle-mounted chip or a vehicle-mounted unit, etc. It should be noted that the specific type of the terminal 11 is not limited in the embodiment of the present application. The network side device 12 may include an access network device or a core network device, wherein the access network device may also be referred to as a radio access network (Radio Access Network, RAN) device, a radio access network function or a radio access network unit. The access network device may include a base station, a wireless local area network (Wireless Local Area Network, WLAN) access point (Access Point, AP) or a wireless fidelity (Wireless Fidelity, WiFi) node, etc.Among them, the base station may be referred to as a Node B (NB), an evolved Node B (eNB), a next generation Node B (gNB), a New Radio Node B (NR Node B), an access point, a Relay Base Station (RBS), a Serving Base Station (SBS), a Base Transceiver Station (BTS), a radio base station, a radio transceiver, a Basic Service Set (BSS), an Extended Service Set (ESS), a Home Node B (HNB), a Home Evolved Node B, a Transmission Reception Point (TRP) or other appropriate terms in the field. As long as the same technical effect is achieved, the base station is not limited to specific technical terms. It should be noted that in the embodiments of the present application, only the base station in the NR system is used as an example for introduction, and the specific type of the base station is not limited.

[0046] In order to facilitate understanding of the embodiments of the present application, the following contents are first described.

[0047] Non-Terrestrial Networks (NTN) refer to networks or network segments that use satellites or unmanned aircraft systems (UAS) platforms or high-altitude communication platforms (HAPS) for transmission. Compared with terrestrial communication systems, satellite-based non-terrestrial communication systems have a wider coverage range. Typical applicable scenarios include situations where ground base stations cannot be built and / or ground base stations are damaged, such as continuous coverage in remote mountainous areas, deserts, oceans, forests, etc., or emergency communications in the event of natural disasters or ground base station damage.

[0048] Optionally, the satellite may include but is not limited to low earth orbit (LEO) satellites, medium earth orbit (MEO) satellites, geostationary earth orbit (GEO) satellites and highly elliptical orbit (HEO) satellites.

[0049] Typical scenarios of non-terrestrial networks include transparent forwarding, that is, the satellite is used as a forwarding relay, the link between the satellite and the terminal is a service link, and the link between the satellite and the ground base station is a feedback link.

[0050] It should be pointed out that due to the large distance between the satellite and the base station and the terminal equipment (User Equipment, UE), there will be a large loss in the wireless link between the base station and the satellite and between the satellite and the UE, resulting in an extremely low wireless link budget for NTN communication, and thus only supporting a very low wireless transmission rate.

[0051] As low-orbit satellites move relative to the ground, terminals need to frequently change cells and perform layer 3 (L3) switching procedures. In particular, NTN cells cover a large area and have a large number of terminals in the cell. When the service link is switched, all terminals in the cell need to perform L3 switching, which will result in a large amount of signaling overhead. In order to save the signaling overhead of switching, a satellite switching without changing the physical cell identifier (PCI) is proposed. That is, in a quasi-stationary scenario, if a service link switching occurs, it is considered that the PCI does not change, that is, the service cell does not change, and there is no need to perform L3 migration (mobility). Furthermore, since the satellite has changed, the terminal may lose synchronization, so the terminal needs to know the time to perform resynchronization so as to perform uplink synchronization at that time.

[0052] For conditional handover (CHO), after deciding to perform CHO handover, the source base station can send a handover request message to two or more potential target base stations and receive a handover response message; then, based on the handover response message, a conditional handover reconfiguration signaling is generated, which can include the configuration of two or more candidate cells and the event that triggers the conditional handover. After receiving the reconfiguration completion signaling, the terminal starts to evaluate the conditional handover triggering event. When any candidate cell meets the event that triggers the conditional handover, the terminal regards the candidate cell as a triggered cell / target cell, applies the conditional reconfiguration of the triggered cell, detaches from the source cell, performs synchronous access to the triggered cell, and sends a CHO handover completion message to the triggered cell.

[0053] Optionally, scenarios applicable to the embodiments of the present application include but are not limited to RACH-less switching in NTN, etc.

[0054] The resource acquisition method, apparatus, terminal and network-side equipment provided in the embodiments of the present application are described in detail below with reference to the accompanying drawings through some embodiments and their application scenarios.

[0055] See also Figure 2 , Figure 2 is a flow chart of a resource acquisition method provided in an embodiment of the present application, the method is executed by a terminal, such as Figure 2 As shown, the method comprises the following steps:

[0056] Step 21: The terminal obtains time information, where the time information is used to obtain uplink authorization resources;

[0057] Step 22: The terminal obtains uplink authorization resources according to the time information.

[0058] In this embodiment, the uplink authorization resource is used by the terminal to perform at least one of the following processes:

[0059] RACH-less handover without random access process;

[0060] Uplink synchronization is performed in a RACH-less manner.

[0061] Here, the uplink synchronization performed by RACH-less may be that the uplink synchronization is performed at the first time by RACH-less, and the first time is used to indicate the time when the terminal needs to perform uplink synchronization. For example, the first time may be configured by a network side device, that is, the network side device configures the first time when the terminal needs to perform uplink synchronization, and the terminal performs uplink synchronization at the first time by RACH-less. At this time, in a satellite switching scenario where the PCI is not changed, that is, in a scenario where a service link switching occurs, uplink synchronization may be performed at the first time by RACH-less.

[0062] In the resource acquisition method of the embodiment of the present application, the terminal can obtain time information, and obtain uplink authorization resources according to the time information, and the uplink authorization resources are used by the terminal to perform at least one of the following processes: RACH-less switching; performing uplink synchronization in a RACH-less manner. Thus, the terminal can obtain uplink authorization resources for the RACH-less process.

[0063] In the embodiment of the present application, uplink authorization resources can be obtained based on the time window configured by the network side device.

[0064] Optionally, the acquisition time information may include:

[0065] The terminal receives at least one uplink authorization and at least one first time window sent by a network side device, there is a corresponding relationship between the at least one uplink authorization and the at least one first time window, and each uplink authorization is related to the first cell.

[0066] The acquiring of uplink authorization resources according to the time information may include at least one of the following:

[0067] 1) The terminal considers, within the at least one first time window, that an uplink grant (UL grant) corresponding to the at least one first time window is valid;

[0068] 2) The terminal applies an uplink grant (UL grant) corresponding to the at least one first time window within the at least one first time window.

[0069] In this way, the network-side device can configure an accurate first time window in which the UL grant takes effect for the terminal, without having to configure periodic UL grants for all terminals, thereby avoiding waste of resources.

[0070] Here, in the case where the uplink grant resource is used for the terminal to perform RACH-less handover, the first cell is the target cell of the RACH-less handover. For example, the first cell may be the target cell under the legacy HO; or in the case of conditional handover CHO, the first cell is one of the CHO candidate cells, such as a cell that satisfies the conditional handover triggering event (i.e., the target cell).

[0071] Alternatively, in a case where the uplink authorization resource is used for the terminal to perform uplink synchronization in a RACH-less manner, the first cell is a service cell of the terminal, the service cell is a cell under a first satellite before performing uplink synchronization in a RACH-less manner, and is a cell under a second satellite after performing uplink synchronization in a RACH-less manner; the first satellite is a satellite to which the terminal is connected before performing uplink synchronization in a RACH-less manner, and the second satellite is a satellite to which the terminal is connected after performing uplink synchronization in a RACH-less manner.

[0072] Optionally, the terminal releases an uplink grant (UL grant) corresponding to the at least one first time window at the end time of the at least one first time window, thereby avoiding waste of resources.

[0073] Optionally, the at least one uplink grant and the at least one first time window may satisfy at least one of the following:

[0074] In the case where there is only one first time window, the first time window corresponds to the at least one uplink grant;

[0075] In the case where there are at least two first time windows, the number of the first time windows is the same as the number of the uplink authorizations, and each first time window corresponds to one uplink authorization, that is, the first time windows correspond to the uplink authorizations one-to-one;

[0076] In the case that the number of the uplink grant is only one, the number of the first time windows corresponding to the uplink grant is one.

[0077] Optionally, each uplink authorization is related to the first cell, and each uplink authorization corresponds to a beam of the first cell. The at least one uplink authorization may satisfy at least one of the following:

[0078] When there is only one uplink grant and the first cell has only one beam, the uplink grant corresponds to the beam of the first cell;

[0079] When there is only one uplink grant and the first cell has multiple beams, the uplink grant corresponds to the beam of the first cell selected by the terminal;

[0080] When the number of the uplink grants is at least two and the first cell has multiple beams, each of the uplink grants corresponds to at least one beam of the first cell.

[0081] Optionally, the first time window may be indicated by at least one of the following:

[0082] The start time of the first time window, and the duration of the first time window;

[0083] The start time and end time of the first time window;

[0084] The related information of the first timer includes at least one of the following: the start time of the first timer and the running length of the first timer.

[0085] Here, the start time and end time of the first time window and the start time of the first timer may be absolute time, such as Universal Time Coordinated (UTC), or relative time, such as frame, subframe, symbol, time slot, etc. The duration of the first time window and the running length of the first timer may be in any of the following units: second, millisecond, frame, subframe, symbol, time slot, etc.

[0086] Optionally, the acquisition time information may include:

[0087] The terminal receives at least one second time window sent by the network side device. For example, each second time window corresponds to a beam of the first cell.

[0088] The acquiring of uplink authorization resources according to the time information may include at least one of the following:

[0089] (1) The terminal monitors a physical downlink control channel (PDCCH) of the first cell in each second time window, and obtains uplink authorization resources according to the monitored PDCCH; for example, the PDCCH may be scrambled by a cell radio network temporary identifier (C-RNTI);

[0090] (2) The terminal monitors the PDCCH of the first cell in the second time window corresponding to the first beam, and obtains uplink authorization resources according to the monitored PDCCH; the first beam is the beam of the first cell selected by the terminal. For example, the PDCCH may be scrambled by the C-RNTI.

[0091] In this way, the network side device can configure an accurate second time window of a dynamic grant (Dynamic Grant, DG) for the terminal, so that the terminal does not need to monitor the PDCCH all the time, thereby saving power consumption of the terminal.

[0092] Optionally, when the uplink grant resource is used for the terminal to perform RACH-less switching, the first cell is the target cell of the RACH-less switching. Alternatively, when the uplink grant resource is used for the terminal to perform uplink synchronization in a RACH-less manner, the first cell is the serving cell of the terminal.

[0093] Optionally, the second time window may be indicated by at least one of the following:

[0094] a start time of the second time window, and a duration of the second time window;

[0095] The start time and end time of the second time window;

[0096] The relevant information of the second timer includes at least one of the following: the start time of the second timer and the running length of the second timer.

[0097] Here, the start time and end time of the second time window and the start time of the second timer may be absolute time, such as Coordinated Universal Time UTC, etc., or relative time, such as frame, subframe, symbol, time slot, etc. The units of the duration of the second time window and the running length of the second timer may be any one of the following: second, millisecond, frame, subframe, symbol, time slot, etc.

[0098] In the embodiment of the present application, the first time window / second time window mentioned above can be configured based on the auxiliary information reported by the terminal. Before obtaining the time information, the resource acquisition method in the present embodiment also includes:

[0099] The terminal reports the first information, where the first information is used to configure the time information, that is, the first information is used to assist the network side device in configuring the time information; the first information includes but is not limited to at least one of the following:

[0100] The location information of the terminal; for example, the location information may include a rough geographical location or a precise geographical location;

[0101] a propagation delay difference (PDD) between a serving link of the serving cell and a serving link of the first cell;

[0102] a difference in transmission delay between a feedback link of the serving cell and a feedback link of the first cell;

[0103] Round Trip Time (RTT) between the terminal and the network side device of the first cell;

[0104] The transmission delay between the terminal of the first cell and the network side device;

[0105] The round trip time of the serving link of the first cell;

[0106] The transmission delay of the service link of the first cell;

[0107] a round trip time of a feedback link of the first cell;

[0108] The transmission delay of the feedback link of the first cell.

[0109] In this way, with the help of the reported first information, the network side device can be assisted to configure the first time window for the terminal to accurately configure the UL grant to take effect, without having to configure periodic UL grant for all terminals, thereby avoiding waste of resources, or assisting the network side device to configure the second time window for the terminal to accurately dynamically authorize DG, so that the terminal does not have to always monitor PDCCH, thereby saving power consumption of the terminal.

[0110] Optionally, the first cell is a target cell for RACH-less handover. For example, the first cell may be a target cell for legacy HO; or in the case of conditional handover CHO, the first cell is one of the CHO candidate cells, such as a cell that satisfies a conditional handover triggering event (i.e., a target cell).

[0111] Optionally, before reporting the first information, the resource acquisition method in this embodiment further includes:

[0112] The terminal receives second information, where the second information is used to instruct the terminal to report the first information or to indicate the first cell; the second information may include at least one of the following:

[0113] first indication information, where the first indication information is used to instruct or enable the terminal to report first information;

[0114] An index value, where the index value is used to indicate relevant information of the first cell;

[0115] The frequency of the first cell; that is, the terminal considers the cell with the same frequency as the first cell;

[0116] The physical cell identifier PCI of the first cell; that is, the terminal considers the cell with the same PCI as the first cell.

[0117] Optionally, the second information may be sent by a network side device to the terminal. The second information may be carried by at least one of the following: a Radio Resource Control (RRC) message, a Medium Access Control Control Element (MAC CE), or Downlink Control Information (DCI).

[0118] Optionally, the index value satisfies at least one of the following:

[0119] Corresponding to the neighbor cell list (e.g., ntn-NeighCellConfigList) in the system information block SIB19; that is, the terminal considers that the cell corresponding to the index value in the neighbor cell list in SIB19 is the first cell;

[0120] Corresponding to the extended neighbor cell list (ntn-NeighCellConfigListExt) in the system information block SIB19; that is, the terminal considers that the cell corresponding to the index value in the extended neighbor cell list in SIB19 is the first cell;

[0121] Corresponding to the neighbor cell list (neighCellInfoList) in the first configuration (such as otherConfig), the first configuration is carried through the RRC reconfiguration message; that is, the terminal considers that the cell corresponding to the index value in the neighbor cell list in the first configuration is the first cell.

[0122] For example, the index value may be one-dimensional, with a value of 0-7 or 1-8; taking 0-7 as an example, index values ​​0-3 correspond one-to-one to the elements in the neighbor cell list (ntn-NeighCellConfigList) in SIB19, and index values ​​4-7 correspond one-to-one to the elements in the extended neighbor cell list (ntn-NeighCellConfigListExt) in SIB19. Alternatively, the index value may be two-dimensional, with the first dimension taking values ​​of 0-1 or 1-2, the two values ​​of the first dimension corresponding to the neighbor cell list in SIB19 and the extended neighbor cell list in SIB19, respectively, and the second dimension taking values ​​of 0-3 or 1-4, corresponding one-to-one to each element in the neighbor cell list in SIB19 or the extended neighbor cell list in SIB19, respectively; taking the former as an example, for example, (0, 3) represents the 4th element in the neighbor cell list in SIB19, and for another example, (1, 2) represents the 3rd element in the extended neighbor cell list in SIB19.

[0123] Optionally, in order to accurately configure the first time window / the second time window, the first information may further include at least one of the following:

[0124] At least one of the following of the first cell: frequency information, PCI, Cell Global Identifier (CGI), and Cell ID;

[0125] The beam of the first cell selected by the terminal; for example, including a beam index value.

[0126] Optionally, the reporting of the first information may include: when the first cell satisfies the conditional switching trigger event, the terminal reports the first information so that the network side device obtains relevant information of the switching target cell, thereby assisting in configuring the first time window / second time window.

[0127] Optionally, before reporting the first information, the terminal may receive second indication information sent by the network side device, where the second indication information is used to instruct or enable the terminal to report the first information when the first cell meets the conditional switching trigger event.

[0128] For example, for CHO, the reporting of the first information may be based on a pre-agreed agreement, a protocol agreement, or a network-side configuration. For example, if based on a pre-agreed agreement or a protocol agreement, the terminal always reports the first information when receiving a RACH-less switching command and the first cell meets a conditional switching trigger event; or, if based on a network-side configuration, the terminal receives the second indication information before reporting the first information, and the second indication information is used to instruct or enable the terminal to report the first information when the first cell meets a conditional switching trigger event.

[0129] Optionally, before acquiring the time information, the resource acquisition method in this embodiment further includes:

[0130] The terminal reports the third information, and the third information is used to configure the time information, that is, the third information is used to assist the network side device to configure the time information; the third information includes but is not limited to at least one of the following:

[0131] The location information of the terminal; for example, the location information may include a rough geographical location or a precise geographical location;

[0132] A transmission delay difference PDD between a service link of the first cell under the first satellite and a service link of the first cell under the second satellite;

[0133] A difference in transmission delay between a feedback link of the first cell under the first satellite and a feedback link of the first cell under the second satellite;

[0134] The round trip time between the terminal of the first cell under the second satellite and the network side device;

[0135] The transmission delay between the terminal of the first cell under the second satellite and the network side device;

[0136] The round trip time of the service link of the first cell under the second satellite;

[0137] The transmission delay of the service link of the first cell under the second satellite;

[0138] The round trip time of the feedback link of the first cell under the second satellite;

[0139] The transmission delay of the feedback link of the first cell under the second satellite.

[0140] Here, the first satellite is a satellite to which the terminal is connected before uplink synchronization is performed in a RACH-less manner, the second satellite is a satellite to which the terminal is connected after uplink synchronization is performed in a RACH-less manner, and the first cell is a service cell of the terminal. That is, the first cell is a service cell of the first satellite before uplink synchronization is performed in a RACH-less manner, and is a service cell of the second satellite after uplink synchronization is performed in a RACH-less manner.

[0141] In this way, with the help of the reported third information, the network side device can be assisted to configure the accurate first time window for the UL grant to take effect for the terminal, without having to configure periodic UL grant for all terminals, thereby avoiding waste of resources, or assisting the network side device to configure the accurate second time window for the dynamic authorization DG for the terminal, so that the terminal does not have to always monitor the PDCCH, thereby saving power consumption of the terminal.

[0142] Optionally, the reporting of the third information includes: the terminal reports the third information before the first time; the first time is used to indicate the time when the terminal needs to perform uplink synchronization, that is, the terminal performs uplink synchronization at the first time in a RACH-less manner. For example, the first time can be configured by a network side device, that is, the network side device configures the first time when the terminal needs to perform uplink synchronization, and the terminal performs uplink synchronization at the first time in a RACH-less manner.

[0143] Optionally, the terminal may report the third information at a second time, where the second time is before the first time, and the second time may satisfy at least one of the following:

[0144] Configured by the network side device; that is, the network side device directly configures the second time;

[0145] The second time is determined according to the first time and the first offset value, which is configured by the network side device and is used to determine the second time. That is, the terminal considers the time indicated by the first offset value shifted forward from the first time as the second time.

[0146] Optionally, before reporting the third information before the first time, the terminal may receive third indication information sent by the network side device, where the third indication information is used to instruct or enable the terminal to report the third information before the first time.

[0147] For example, the specific time for the terminal to report the third information may be based on the terminal implementation, that is, the protocol does not stipulate a specific time or the network side does not configure a specific time. Alternatively, the behavior of the terminal reporting the third information before the first time may be based on a pre-agreement, a protocol agreement, or a network side configuration. For example, if based on a pre-agreement or a protocol agreement, the terminal always needs to report the third information before the first time; or, if based on the network side configuration, the network side device may be explicitly configured or implicitly configured; for example, if the network side device is configured with a second time or a first offset value, it indicates an implicit configuration; if explicitly configured, the terminal receives a third indication information before reporting the third information, and the third indication information is used to instruct or enable the terminal to report the third information before the first time.

[0148] The resource acquisition process in this application is explained below with reference to specific examples.

[0149] Example 1

[0150] The scenario corresponding to this example 1 is to perform traditional switching in a RACH-less manner. In this example 1, the terminal first reports auxiliary information (i.e., first information), and then the network side device sends a RACH-less switching command, which includes the first time window / second time window configured according to the auxiliary information. The specific resource acquisition process includes:

[0151] S1: The terminal reports first information. The details of the first information can be found in the above embodiment and will not be described again.

[0152] Optionally, before reporting the first information, the terminal may receive second information sent by the network-side device. The details of the second information may be referred to as shown in the above embodiment and will not be described herein.

[0153] / / Preallocate grant / /

[0154] S2a: The terminal receives a RACH-less switching command sent by a network side device, which includes at least one uplink authorization and at least one first time window configured according to the first information. The at least one uplink authorization and at least one first time window can be specifically referred to in the above embodiment and will not be described again here.

[0155] S3a: The terminal executes at least one of the following:

[0156] 1) The terminal considers the corresponding UL grant to be valid within at least one first time window;

[0157] 2) The terminal applies the corresponding UL grant within at least one first time window.

[0158] S4: The terminal releases the corresponding UL grant at the end time of the at least one first time window.

[0159] / / Dynamic scheduling / /

[0160] S2b: The terminal receives a RACH-less switching command sent by the network side device, which includes at least one second time window configured according to the first information. The details of the second time window can be seen in the above embodiment, which will not be described again.

[0161] S3b: The terminal executes at least one of the following:

[0162] (1) The terminal monitors the PDCCH scrambled by the C-RNTI of the first cell in each second time window, and obtains uplink authorization resources according to the monitored PDCCH;

[0163] (2) The terminal monitors the C-RNTI-scrambled PDCCH of the first cell within a second time window corresponding to the first beam, and obtains uplink authorization resources according to the monitored PDCCH; the first beam is the beam of the first cell selected by the terminal.

[0164] Example 2

[0165] The scenario corresponding to this Example 2 is to perform conditional switching in a RACH-less manner. The main difference from Example 1 is that the terminal first receives the RACH-less switching command, and reports auxiliary information (i.e., the first information) after the CHO trigger condition is met, and then the network side device configures the first time window / second time window according to the received auxiliary information. The specific resource acquisition process includes:

[0166] S0: The terminal receives a RACH-less handover command, which includes configurations of multiple candidate cells.

[0167] S1: The terminal reports first information. The details of the first information can be found in the above embodiment and will not be described again.

[0168] Optionally, the reported first information may be based on a pre-agreement, a protocol agreement or a network side configuration.

[0169] / / Preallocate grant / /

[0170] S2a: The terminal receives at least one uplink authorization and at least one first time window sent by the network side device. The details of the at least one uplink authorization and the at least one first time window can be found in the above embodiment and will not be described again here.

[0171] S3a: The terminal executes at least one of the following:

[0172] 1) The terminal considers the corresponding UL grant to be valid within at least one first time window;

[0173] 2) The terminal applies the corresponding UL grant within at least one first time window.

[0174] S4: The terminal releases the corresponding UL grant at the end time of the at least one first time window.

[0175] / / Dynamic scheduling / /

[0176] S2b: The terminal receives at least one second time window sent by the network side device. The details of the second time window can be seen in the above embodiment and will not be repeated here.

[0177] S3b: The terminal executes at least one of the following:

[0178] (1) The terminal monitors the PDCCH scrambled by the C-RNTI of the first cell in each second time window, and obtains uplink authorization resources according to the monitored PDCCH;

[0179] (2) The terminal monitors the C-RNTI-scrambled PDCCH of the first cell within a second time window corresponding to the first beam, and obtains uplink authorization resources according to the monitored PDCCH; the first beam is the beam of the first cell selected by the terminal.

[0180] Example 3

[0181] The scenario corresponding to Example 3 is to handle satellite switching without changing PCI in a RACH-less manner, that is, when a service link switching occurs, the terminal performs uplink synchronization in a RACH-less manner. The specific resource acquisition process includes:

[0182] S0: The terminal determines to perform uplink synchronization at the first time in a RACH-less manner.

[0183] S1: The terminal reports third information before a first time, where the first time is the time when the terminal needs to perform uplink synchronization as indicated by the network side. The third information and the behavior of reporting the third information can be specifically referred to in the above embodiment, which will not be described in detail here.

[0184] / / Preallocate grant / /

[0185] S2a: The terminal receives at least one uplink authorization and at least one first time window sent by the network side device. The at least one uplink authorization and at least one first time window can be specifically referred to as shown in the above embodiment, wherein the first cell is the current serving cell.

[0186] S3a: The terminal executes at least one of the following:

[0187] 1) The terminal considers the corresponding UL grant to be valid within at least one first time window;

[0188] 2) The terminal applies the corresponding UL grant within at least one first time window.

[0189] S4: The terminal releases the corresponding UL grant at the end time of the at least one first time window.

[0190] / / Dynamic scheduling / /

[0191] S2b: The terminal receives at least one second time window sent by the network side device. The details of the second time window can be seen in the above embodiment, where the first cell is the current serving cell.

[0192] S3b: The terminal executes at least one of the following:

[0193] (1) The terminal monitors the PDCCH scrambled by the C-RNTI of the first cell in each second time window, and obtains uplink authorization resources according to the monitored PDCCH;

[0194] (2) The terminal monitors the C-RNTI-scrambled PDCCH of the first cell within a second time window corresponding to the first beam, and obtains uplink authorization resources according to the monitored PDCCH; the first beam is the beam of the first cell selected by the terminal.

[0195] In the embodiment of the present application, in addition to monitoring the PDCCH according to the second time window as described above, the terminal may autonomously determine the time to monitor the PDCCH, thereby acquiring uplink authorization resources according to the monitored PDCCH.

[0196] Optionally, the acquisition time information may include:

[0197] The terminal obtains a third time; the third time can be understood as a delay time relative to a certain time.

[0198] The acquiring, according to the time information, uplink authorization resources may include:

[0199] The terminal starts monitoring the PDCCH of the second cell at the third time, and acquires uplink grant resources according to the monitored PDCCH. For example, the PDCCH may be scrambled by the C-RNTI.

[0200] In this way, by starting to monitor the PDCCH of the second cell at the third time, the terminal does not need to monitor the PDCCH all the time, thereby saving power consumption of the terminal.

[0201] Optionally, the second cell may be any of the following:

[0202] The target cell for handover; for example, the corresponding scenario is legacy HO;

[0203] Candidate cells for conditional handover; for example, the corresponding scenario is CHO;

[0204] A service cell, wherein the service cell is a cell under a first satellite before uplink synchronization is performed in a RACH-less manner, and is a cell under a second satellite after uplink synchronization is performed in a RACH-less manner, wherein the first satellite is a satellite to which the terminal is connected before uplink synchronization is performed in a RACH-less manner, and the second satellite is a satellite to which the terminal is connected after uplink synchronization is performed in a RACH-less manner; for example, this corresponding scenario is satellite switching without changing the PCI, that is, service link switching.

[0205] Optionally, obtaining the third time may include at least one of the following:

[0206] Determine the third time according to the fourth time and the transmission delay of the feedback link of the second cell; for example, the determination method may be direct addition, weighted addition, etc.;

[0207] Determine the third time according to the fourth time and a common timing advance (Common TA) parameter of the second cell; for example, the determination method may be direct addition, weighted addition, etc.;

[0208] Determine the third time according to the fourth time and the transmission delay between the terminal of the second cell and the network side device; for example, this determination method may be direct addition, weighted addition, etc.;

[0209] The third time is determined according to the fourth time and the shortest transmission delay of the second cell; for example, the determination method may be direct addition, weighted addition, etc.

[0210] Here, the fourth time satisfies any one of the following:

[0211] In a case where the uplink grant resource is used for the terminal to perform RACH-less switching, the fourth time is the time when the terminal receives the RACH-less switching command;

[0212] When the uplink authorization resources are used for the terminal to perform RACH-less switching and the terminal is configured with conditional switching, the fourth time is any one of the following: the time corresponding to the time-based conditional switching trigger event of the second cell, the time when the conditional switching trigger event of the second cell is satisfied, and the time when the terminal successfully sends the fourth information; for example, the time corresponding to the time-based conditional switching trigger event of the second cell can be the start time of the trigger event, that is, t1-Threshold, or it can be the end time of the trigger event, that is, the sum of t1-Threshold and duration duration.

[0213] In a case where the uplink grant resource is used for the terminal to perform uplink synchronization in a RACH-less manner, the fourth time is the time when the terminal performs uplink synchronization in a RACH-less manner, that is, the first time.

[0214] Optionally, the third time may satisfy at least one of the following:

[0215] The third time is equal to the sum of the fourth time and the transmission delay of the feedback link of the second cell;

[0216] The third time is equal to the sum of the fourth time and the time indicated by the common timing advance parameter of the second cell;

[0217] The third time is equal to the sum of the fourth time and the fifth time, and the fifth time is equal to half of the time indicated by the common timing advance parameter of the second cell;

[0218] The third time is equal to the sum of the fourth time and the transmission delay between the terminal of the second cell and the network side device;

[0219] The third time is equal to the sum of the fourth time and the shortest transmission delay of the second cell.

[0220] Optionally, the shortest transmission delay of the second cell may be determined based on at least one of the following: a reference position of the second cell, ephemeris information, a common timing advance parameter common TA of the second cell, and a scheduling offset K_mac of the second cell. For example, the shortest transmission delay of the second cell is equal to: the transmission delay from the reference position of the second cell to the satellite + (common TA + K_mac) / 2.

[0221] Optionally, the fourth information may include at least one of the following:

[0222] Fourth indication information, where the fourth indication information is used to indicate that the second cell is a target cell for conditional switching;

[0223] fifth indication information, where the fifth indication information is used to indicate that a conditional handover triggering event of the second cell is satisfied;

[0224] At least one of the following of the second cell: frequency information, PCI, CGI, Cell ID.

[0225] Optionally, when the second cell is a candidate cell for conditional switching, the terminal may send the fourth information if a conditional switching triggering event of the second cell is met.

[0226] The following describes how the terminal autonomously determines the time to monitor the PDCCH in the present application with reference to a specific example.

[0227] Example 1

[0228] The scenario corresponding to this example 1 is to perform traditional handover in a RACH-less manner. The resource acquisition process in this example 1 includes:

[0229] S1: The terminal receives a RACH-less handover command;

[0230] S2: The terminal starts to monitor the PDCCH scrambled by the C-RNTI of the second cell at a third time, where the second cell is a target cell for handover, and the third time satisfies any one of the following conditions:

[0231] - the third time is equal to the sum of the fourth time and the transmission delay of the feedback link of the second cell;

[0232] - the third time is equal to the sum of the fourth time and the time indicated by the common timing advance parameter of the second cell;

[0233] - the third time is equal to the sum of the fourth time and the fifth time, and the fifth time is equal to half of the time indicated by the common timing advance parameter of the second cell;

[0234] - the third time is equal to the sum of the fourth time and the transmission delay between the terminal and the network side device of the second cell;

[0235] -The third time is equal to the sum of the fourth time and the shortest transmission delay of the second cell.

[0236] Here, the fourth time is the time when the terminal receives the RACH-less switching command.

[0237] Example 2

[0238] The scenario corresponding to this example 2 is to perform conditional switching in a RACH-less manner. The resource acquisition process in this example 2 includes:

[0239] S1: The terminal receives a RACH-less handover command, which includes configurations of multiple candidate cells. Optionally, a conditional handover trigger event of each candidate cell includes a time-based trigger event.

[0240] Case 1:

[0241] S2a: The terminal starts to monitor the PDCCH scrambled by the C-RNTI of the second cell at a third time, where the second cell is a candidate cell for conditional switching, and the third time satisfies any one of the following:

[0242] - the third time is equal to the sum of the fourth time and the transmission delay of the feedback link of the second cell;

[0243] - the third time is equal to the sum of the fourth time and the time indicated by the common timing advance parameter of the second cell;

[0244] - the third time is equal to the sum of the fourth time and the fifth time, and the fifth time is equal to half of the time indicated by the common timing advance parameter of the second cell;

[0245] - the third time is equal to the sum of the fourth time and the transmission delay between the terminal and the network side device of the second cell;

[0246] -The third time is equal to the sum of the fourth time and the shortest transmission delay of the second cell.

[0247] Here, the fourth time is any one of the following: the time corresponding to the time-based conditional switching trigger event of the second cell, and the time when the conditional switching trigger event of the second cell is satisfied.

[0248] Case 2:

[0249] S2b: When the conditional switching triggering event of the second cell is met, the terminal sends fourth information. The fourth information can be specifically described in the above embodiment and will not be described again.

[0250] S3b: The terminal starts to monitor the PDCCH scrambled by the C-RNTI of the second cell at a third time, where the second cell is a target cell for handover, and the third time satisfies any one of the following conditions:

[0251] - the third time is equal to the sum of the fourth time and the transmission delay of the feedback link of the second cell;

[0252] - the third time is equal to the sum of the fourth time and the time indicated by the common timing advance parameter of the second cell;

[0253] - the third time is equal to the sum of the fourth time and the fifth time, and the fifth time is equal to half of the time indicated by the common timing advance parameter of the second cell;

[0254] - the third time is equal to the sum of the fourth time and the transmission delay between the terminal and the network side device of the second cell;

[0255] -The third time is equal to the sum of the fourth time and the shortest transmission delay of the second cell.

[0256] Here, the fourth time is the time when the terminal successfully sends the fourth information.

[0257] Example 3

[0258] The scenario corresponding to this example 3 is to handle the satellite switching without changing the PCI in a RACH-less manner, that is, when a service link switching occurs, the terminal performs uplink synchronization in a RACH-less manner. The resource acquisition process in this example 3 includes:

[0259] S1: The terminal determines to perform uplink synchronization at the first time in a RACH-less manner.

[0260] S2: The terminal starts to monitor the PDCCH scrambled by the C-RNTI of the second cell at a third time, where the second cell is a serving cell of the terminal, and the third time satisfies any one of the following conditions:

[0261] - the third time is equal to the sum of the fourth time and the transmission delay of the feedback link of the second cell;

[0262] - the third time is equal to the sum of the fourth time and the time indicated by the common timing advance parameter of the second cell;

[0263] - the third time is equal to the sum of the fourth time and the fifth time, and the fifth time is equal to half of the time indicated by the common timing advance parameter of the second cell;

[0264] - the third time is equal to the sum of the fourth time and the transmission delay between the terminal and the network side device of the second cell;

[0265] -The third time is equal to the sum of the fourth time and the shortest transmission delay of the second cell.

[0266] Here, the fourth time is the first time, that is, the time for performing uplink synchronization in a RACH-less manner.

[0267] See also Figure 3 , Figure 3 is a flow chart of an information sending method provided in an embodiment of the present application, the method is executed by a network side device, such as Figure 3 As shown, the method comprises the following steps:

[0268] Step 31: The network side device sends fifth information to the terminal, where the fifth information is used to obtain uplink authorization resources.

[0269] In this embodiment, the fifth information includes at least one of the following:

[0270] At least one uplink grant and at least one first time window, there is a corresponding relationship between the at least one uplink grant and the at least one first time window, and each of the uplink grants is related to the first cell;

[0271] At least one second time window.

[0272] Therefore, by sending at least one uplink authorization and at least one first time window to the terminal, the terminal can consider the corresponding UL grant to be valid within at least one first time window, or apply the corresponding UL grant within at least one first time window, thereby enabling the network side device to configure the accurate first time window for the UL grant to take effect for the terminal, without having to configure periodic UL grant for all terminals, thereby avoiding waste of resources.

[0273] By sending the second time window to the terminal, the terminal can monitor the PDCCH of the first cell in each second time window, or monitor the PDCCH of the first cell in the second time window corresponding to the first beam, and obtain uplink authorization resources based on the monitored PDCCH, thereby enabling the network side device to configure an accurate dynamically authorized second time window for the terminal, so that the terminal does not need to always monitor the PDCCH, thereby saving power consumption of the terminal.

[0274] Optionally, the at least one uplink grant and the at least one first time window may satisfy at least one of the following:

[0275] In the case where there is only one first time window, the first time window corresponds to the at least one uplink grant;

[0276] In the case where there are at least two first time windows, the number of the first time windows is the same as the number of the uplink authorizations, and each first time window corresponds to one uplink authorization, that is, the first time windows correspond to the uplink authorizations one-to-one;

[0277] In the case that the number of the uplink grant is only one, the number of the first time windows corresponding to the uplink grant is one.

[0278] Optionally, each uplink authorization is related to the first cell, and each uplink authorization corresponds to a beam of the first cell. The at least one uplink authorization may satisfy at least one of the following:

[0279] When there is only one uplink grant and the first cell has only one beam, the uplink grant corresponds to the beam of the first cell;

[0280] When there is only one uplink grant and the first cell has multiple beams, the uplink grant corresponds to the beam of the first cell selected by the terminal;

[0281] When the number of the uplink grants is at least two and the first cell has multiple beams, each of the uplink grants corresponds to at least one beam of the first cell.

[0282] Optionally, the first time window may be indicated by at least one of the following:

[0283] The start time of the first time window, and the duration of the first time window;

[0284] The start time and end time of the first time window;

[0285] The related information of the first timer includes at least one of the following: the start time of the first timer and the running length of the first timer.

[0286] Optionally, the second time window may be indicated by at least one of the following:

[0287] a start time of the second time window, and a duration of the second time window;

[0288] The start time and end time of the second time window;

[0289] The relevant information of the second timer includes at least one of the following: the start time of the second timer and the running length of the second timer.

[0290] In the embodiment of the present application, the first time window / second time window mentioned above can be configured based on the auxiliary information reported by the terminal. Before sending the fifth information to the terminal, the information sending method in the embodiment further includes:

[0291] The network side device receives first information sent by the terminal, where the first information is used to configure the fifth information, that is, the first information is used to assist the network side device in configuring the fifth information; the first information includes at least one of the following:

[0292] The location information of the terminal;

[0293] a difference in transmission delay between a service link of the serving cell and a service link of the first cell;

[0294] a difference in transmission delay between a feedback link of the serving cell and a feedback link of the first cell;

[0295] The round trip time between the terminal and the network side device of the first cell;

[0296] The transmission delay between the terminal of the first cell and the network side device;

[0297] The round trip time of the serving link of the first cell;

[0298] The transmission delay of the service link of the first cell;

[0299] a round trip time of a feedback link of the first cell;

[0300] The transmission delay of the feedback link of the first cell.

[0301] In this way, with the help of the reported first information, the network side device can be assisted to configure the first time window for the terminal to accurately configure the UL grant to take effect, without having to configure periodic UL grant for all terminals, thereby avoiding waste of resources, or assisting the network side device to configure the second time window for the terminal to accurately dynamically authorize DG, so that the terminal does not have to always monitor PDCCH, thereby saving power consumption of the terminal.

[0302] Optionally, when the uplink authorization resource is used by the terminal to perform RACH-less switching, the first cell is the target cell of the RACH-less switching; or, when the uplink authorization resource is used by the terminal to perform uplink synchronization in a RACH-less manner, the first cell is the serving cell of the terminal.

[0303] Optionally, before the receiving terminal sends the first information, the information sending method in this embodiment further includes:

[0304] The network side device sends second information to the terminal, where the second information is used to instruct the terminal to report the first information or indicate the first cell; the second information includes at least one of the following:

[0305] first indication information, where the first indication information is used to instruct the terminal to report first information;

[0306] an index value, where the index value is used to indicate relevant information of the first cell;

[0307] a frequency of the first cell;

[0308] A physical cell identifier PCI of the first cell.

[0309] Optionally, the index value satisfies at least one of the following:

[0310] Corresponds to the neighbor cell list in SIB19;

[0311] Corresponds to the extended neighbor cell list in SIB19;

[0312] Corresponding to the neighbor cell list in the first configuration, the first configuration is carried by the RRC reconfiguration message.

[0313] Optionally, before sending the fifth information to the terminal, the information sending method in this embodiment further includes:

[0314] The network side device receives third information sent by the terminal, where the third information is used to configure the fifth information; the third information includes at least one of the following:

[0315] The location information of the terminal;

[0316] A difference in transmission delay between a service link of the first cell under the first satellite and a service link of the first cell under the second satellite;

[0317] A difference in transmission delay between a feedback link of the first cell under the first satellite and a feedback link of the first cell under the second satellite;

[0318] The round trip time between the terminal of the first cell under the second satellite and the network side device;

[0319] The transmission delay between the terminal of the first cell under the second satellite and the network side device;

[0320] The round trip time of the service link of the first cell under the second satellite;

[0321] The transmission delay of the service link of the first cell under the second satellite;

[0322] The round trip time of the feedback link of the first cell under the second satellite;

[0323] Transmission delay of a feedback link of the first cell under the second satellite;

[0324] The first satellite is a satellite to which the terminal is connected before uplink synchronization is performed in a RACH-less manner, the second satellite is a satellite to which the terminal is connected after uplink synchronization is performed in a RACH-less manner, and the first cell is a service cell of the terminal.

[0325] The resource acquisition method provided in the embodiment of the present application can be executed by a resource acquisition device. In the embodiment of the present application, the resource acquisition device provided in the embodiment of the present application is described by taking the resource acquisition method executed by the resource acquisition device as an example.

[0326] See also Figure 4 , Figure 4 is a schematic diagram of a resource acquisition device provided in an embodiment of the present application, and the device is applied to a terminal, such as Figure 4 As shown, the resource acquisition device 40 includes:

[0327] A first acquisition module 41 is used to acquire time information, where the time information is used to acquire uplink authorization resources;

[0328] A second acquisition module 42, configured to acquire uplink authorization resources according to the time information;

[0329] The uplink authorization resource is used by the terminal to perform at least one of the following processes:

[0330] RACH-less handover without random access process;

[0331] Uplink synchronization is performed in a RACH-less manner.

[0332] Optionally, the first acquisition module 41 is specifically used to: receive at least one uplink authorization and at least one first time window sent by a network side device, there is a corresponding relationship between the at least one uplink authorization and the at least one first time window, and each of the uplink authorizations is related to the first cell;

[0333] The second acquisition module 42 is specifically configured to perform at least one of the following:

[0334] Within the at least one first time window, considering that the uplink authorization corresponding to the at least one first time window is valid;

[0335] Within the at least one first time window, an uplink grant corresponding to the at least one first time window is applied.

[0336] Optionally, the at least one uplink grant and the at least one first time window satisfy at least one of the following:

[0337] In the case where there is only one first time window, the first time window corresponds to the at least one uplink grant;

[0338] In the case where there are at least two first time windows, the number of the first time windows is the same as the number of the uplink grants, and each first time window corresponds to one uplink grant;

[0339] In the case that the number of the uplink grant is only one, the number of the first time windows corresponding to the uplink grant is one.

[0340] Optionally, the at least one uplink authorization satisfies at least one of the following:

[0341] When there is only one uplink grant and the first cell has only one beam, the uplink grant corresponds to the beam of the first cell;

[0342] When there is only one uplink grant and the first cell has multiple beams, the uplink grant corresponds to the beam of the first cell selected by the terminal;

[0343] When the number of the uplink grants is at least two and the first cell has multiple beams, each of the uplink grants corresponds to at least one beam of the first cell.

[0344] Optionally, the resource acquisition device 40 further includes:

[0345] The release module is used to release the uplink authorization corresponding to the at least one first time window at the end time of the at least one first time window.

[0346] Optionally, the first time window is indicated by at least one of the following:

[0347] a start time of the first time window, and a duration of the first time window;

[0348] The start time and end time of the first time window;

[0349] The related information of the first timer includes at least one of the following: the start time of the first timer and the running length of the first timer.

[0350] Optionally, the first acquisition module 41 is specifically used to: receive at least one second time window sent by a network side device;

[0351] The second acquisition module 42 is specifically configured to perform at least one of the following:

[0352] monitoring the PDCCH of the first cell in each of the second time windows, and acquiring uplink authorization resources according to the monitored PDCCH;

[0353] Monitor the PDCCH of the first cell within a second time window corresponding to the first beam, and acquire uplink authorization resources according to the monitored PDCCH; wherein the first beam is the beam of the first cell selected by the terminal.

[0354] Optionally, the second time window is indicated by at least one of the following:

[0355] a start time of the second time window, and a duration of the second time window;

[0356] The start time and end time of the second time window;

[0357] The relevant information of the second timer includes at least one of the following: the start time of the second timer and the running length of the second timer.

[0358] Optionally, the resource acquisition device 40 further includes:

[0359] A first reporting module is configured to report first information, where the first information is used to configure the time information; the first information includes at least one of the following:

[0360] location information of the terminal;

[0361] a difference in transmission delay between a service link of the serving cell and a service link of the first cell;

[0362] a difference in transmission delay between a feedback link of the serving cell and a feedback link of the first cell;

[0363] The round trip time between the terminal and the network side device of the first cell;

[0364] The transmission delay between the terminal of the first cell and the network side device;

[0365] The round trip time of the serving link of the first cell;

[0366] The transmission delay of the service link of the first cell;

[0367] a round trip time of a feedback link of the first cell;

[0368] The transmission delay of the feedback link of the first cell.

[0369] Optionally, when the uplink authorization resource is used by the terminal to perform RACH-less switching, the first cell is the target cell of the RACH-less switching; or, when the uplink authorization resource is used by the terminal to perform uplink synchronization in a RACH-less manner, the first cell is the serving cell of the terminal.

[0370] Optionally, the resource acquisition device 40 further includes:

[0371] The first receiving module is configured to receive second information, where the second information is used to instruct the terminal to report the first information or to indicate the first cell; the second information includes at least one of the following:

[0372] first indication information, where the first indication information is used to instruct or enable the terminal to report first information;

[0373] an index value, where the index value is used to indicate relevant information of the first cell;

[0374] a frequency of the first cell;

[0375] A physical cell identifier PCI of the first cell.

[0376] Optionally, the index value satisfies at least one of the following:

[0377] Corresponding to the neighbor cell list in the system information block SIB19;

[0378] Corresponding to the extended neighbor cell list in the system information block SIB19;

[0379] Corresponding to the neighbor cell list in the first configuration, the first configuration is carried by a radio resource control RRC reconfiguration message.

[0380] Optionally, the first information further includes at least one of the following:

[0381] At least one of the following of the first cell: frequency information, PCI, CGI, Cell ID;

[0382] The terminal selects the beam of the first cell.

[0383] Optionally, the first reporting module is specifically used to: report the first information when the first cell meets a conditional switching trigger event.

[0384] Optionally, the resource acquisition device 40 further includes:

[0385] The second receiving module is used to receive second indication information sent by a network side device, where the second indication information is used to instruct or enable the terminal to report first information when the first cell meets a conditional switching trigger event.

[0386] Optionally, the resource acquisition device 40 further includes:

[0387] The second reporting module is used to report third information, where the third information is used to configure the time information; the third information includes at least one of the following:

[0388] location information of the terminal;

[0389] A difference in transmission delay between a service link of the first cell under the first satellite and a service link of the first cell under the second satellite;

[0390] A difference in transmission delay between a feedback link of the first cell under the first satellite and a feedback link of the first cell under the second satellite;

[0391] The round trip time between the terminal of the first cell under the second satellite and the network side device;

[0392] The transmission delay between the terminal of the first cell under the second satellite and the network side device;

[0393] The round trip time of the service link of the first cell under the second satellite;

[0394] The transmission delay of the service link of the first cell under the second satellite;

[0395] The round trip time of the feedback link of the first cell under the second satellite;

[0396] Transmission delay of a feedback link of the first cell under the second satellite;

[0397] The first satellite is a satellite to which the terminal is connected before uplink synchronization is performed in a RACH-less manner, the second satellite is a satellite to which the terminal is connected after uplink synchronization is performed in a RACH-less manner, and the first cell is a service cell for the terminal.

[0398] Optionally, the second reporting module is specifically used to: report the third information before a first time; the first time is used to indicate the time when the terminal needs to perform uplink synchronization.

[0399] Optionally, the second reporting module is specifically configured to: report the third information at a second time, where the second time is before the first time; and the second time satisfies at least one of the following:

[0400] Configured by network-side devices;

[0401] The first offset value is determined according to the first time and the first offset value, where the first offset value is configured by a network-side device and is used to determine the second time.

[0402] Optionally, the resource acquisition device 40 further includes:

[0403] The third receiving module is used to receive third indication information sent by the network side device, where the third indication information is used to instruct or enable the terminal to report the third information before the first time.

[0404] Optionally, the first acquisition module 41 is specifically used to: acquire a third time;

[0405] The second acquisition module 42 is specifically configured to start monitoring the PDCCH of the second cell at the third time, and obtain uplink authorization resources according to the monitored PDCCH.

[0406] Optionally, the second cell is any one of the following:

[0407] The target cell for handover;

[0408] Candidate cells for conditional handover;

[0409] A serving cell, wherein the serving cell is a cell under a first satellite before uplink synchronization is performed in a RACH-less manner, and is a cell under a second satellite after uplink synchronization is performed in a RACH-less manner.

[0410] Optionally, the first acquisition module 41 is specifically configured to perform at least one of the following:

[0411] determining the third time according to the fourth time and a transmission delay of a feedback link of the second cell;

[0412] Determine the third time according to the fourth time and a common timing advance parameter of the second cell;

[0413] Determine the third time according to the fourth time and the transmission delay between the terminal and the network side device of the second cell;

[0414] Determine the third time according to the fourth time and the shortest transmission delay of the second cell;

[0415] The fourth time satisfies any one of the following:

[0416] In a case where the uplink grant resource is used by the terminal to perform RACH-less switching, the fourth time is the time when the terminal receives the RACH-less switching command;

[0417] When the uplink authorization resource is used for the terminal to perform RACH-less switching and the terminal is configured with conditional switching, the fourth time is any one of the following: a time corresponding to a time-based conditional switching triggering event of the second cell, a time when the conditional switching triggering event of the second cell is satisfied, and a time when the terminal successfully sends the fourth information;

[0418] In a case where the uplink grant resource is used for the terminal to perform uplink synchronization in a RACH-less manner, the fourth time is a time for the terminal to perform uplink synchronization in a RACH-less manner.

[0419] Optionally, the third time satisfies at least one of the following:

[0420] The third time is equal to the sum of the fourth time and the transmission delay of the feedback link of the second cell;

[0421] The third time is equal to the sum of the fourth time and the time indicated by the common timing advance parameter of the second cell;

[0422] The third time is equal to the sum of the fourth time and the fifth time, and the fifth time is equal to half of the time indicated by the common timing advance parameter of the second cell;

[0423] The third time is equal to the sum of the fourth time and the transmission delay between the terminal and the network side device of the second cell;

[0424] The third time is equal to the sum of the fourth time and the shortest transmission delay of the second cell.

[0425] Optionally, the shortest transmission delay of the second cell is determined based on at least one of the following: a reference position of the second cell, ephemeris information, a common timing advance parameter of the second cell, and a scheduling offset of the second cell.

[0426] Optionally, when the second cell is a candidate cell for conditional switching, the resource acquisition device 40 further includes:

[0427] The first sending module is configured to send fourth information when a conditional handover triggering event of the second cell is met, where the fourth information includes at least one of the following:

[0428] Fourth indication information, where the fourth indication information is used to indicate that the second cell is a target cell for conditional switching;

[0429] fifth indication information, where the fifth indication information is used to indicate that a conditional handover triggering event of the second cell is satisfied;

[0430] At least one of the following of the second cell: frequency information, PCI, CGI, Cell ID.

[0431] The resource acquisition device 40 in the embodiment of the present application can be an electronic device, such as an electronic device with an operating system, or a component in an electronic device, such as an integrated circuit or a chip. The electronic device can be a terminal, or can be other devices other than a terminal. Exemplarily, the terminal can include but is not limited to the types of the terminal 11 listed above, and other devices can be servers, network attached storage (NAS), etc., which are not specifically limited in the embodiment of the present application.

[0432] The resource acquisition device 40 provided in the embodiment of the present application can achieve Figure 2 The various processes implemented by the method embodiment and achieving the same technical effect are not described here to avoid repetition.

[0433] See also Figure 5 , Figure 5 is a schematic diagram of the structure of an information sending device provided in an embodiment of the present application, and the device is applied to a network side device, such as Figure 5 As shown, the information sending device 50 includes:

[0434] The second sending module 51 is configured to send fifth information to the terminal; wherein the fifth information is used to obtain uplink authorization resources, and the fifth information includes at least one of the following:

[0435] At least one uplink grant and at least one first time window, there is a corresponding relationship between the at least one uplink grant and the at least one first time window, and each of the uplink grants is related to the first cell;

[0436] At least one second time window.

[0437] Optionally, the at least one uplink grant and the at least one first time window satisfy at least one of the following:

[0438] In the case where there is only one first time window, the first time window corresponds to the at least one uplink grant;

[0439] In the case where there are at least two first time windows, the number of the first time windows is the same as the number of the uplink grants, and each first time window corresponds to one uplink grant;

[0440] In the case that the number of the uplink grant is only one, the number of the first time windows corresponding to the uplink grant is one.

[0441] Optionally, the at least one uplink authorization satisfies at least one of the following:

[0442] When there is only one uplink grant and the first cell has only one beam, the uplink grant corresponds to the beam of the first cell;

[0443] When there is only one uplink grant and the first cell has multiple beams, the uplink grant corresponds to the beam of the first cell selected by the terminal;

[0444] When the number of the uplink grants is at least two and the first cell has multiple beams, each of the uplink grants corresponds to at least one beam of the first cell.

[0445] Optionally, the first time window is indicated by at least one of the following:

[0446] a start time of the first time window, and a duration of the first time window;

[0447] The start time and end time of the first time window;

[0448] Related information of a first timer, wherein the related information of the first timer includes at least one of the following: a start time of the first timer and a running length of the first timer;

[0449] Alternatively, the second time window is indicated by at least one of the following:

[0450] a start time of the second time window, and a duration of the second time window;

[0451] The start time and end time of the second time window;

[0452] The relevant information of the second timer includes at least one of the following: the start time of the second timer and the running length of the second timer.

[0453] Optionally, the information sending device 50 further includes:

[0454] The fourth receiving module is configured to receive first information sent by the terminal, where the first information is used to configure the fifth information; the first information includes at least one of the following:

[0455] location information of the terminal;

[0456] a difference in transmission delay between a service link of the serving cell and a service link of the first cell;

[0457] a difference in transmission delay between a feedback link of the serving cell and a feedback link of the first cell;

[0458] The round trip time between the terminal and the network side device of the first cell;

[0459] The transmission delay between the terminal of the first cell and the network side device;

[0460] The round trip time of the serving link of the first cell;

[0461] The transmission delay of the service link of the first cell;

[0462] a round trip time of a feedback link of the first cell;

[0463] The transmission delay of the feedback link of the first cell.

[0464] Optionally, when the uplink authorization resource is used for the terminal to perform RACH-less switching, the first cell is the target cell of the RACH-less switching; or, when the uplink authorization resource is used for the terminal to perform uplink synchronization in a RACH-less manner, the first cell is the serving cell of the terminal.

[0465] Optionally, the information sending device 50 further includes:

[0466] a third sending module, configured to send second information to the terminal, where the second information is used to instruct the terminal to report the first information or to indicate the first cell; and the second information includes at least one of the following:

[0467] first indication information, where the first indication information is used to instruct the terminal to report first information;

[0468] an index value, where the index value is used to indicate relevant information of the first cell;

[0469] a frequency of the first cell;

[0470] A physical cell identifier PCI of the first cell.

[0471] Optionally, the index value satisfies at least one of the following:

[0472] Corresponds to the neighbor cell list in SIB19;

[0473] Corresponds to the extended neighbor cell list in SIB19;

[0474] Corresponding to the neighbor cell list in the first configuration, the first configuration is carried by the RRC reconfiguration message.

[0475] Optionally, the information sending device 50 further includes:

[0476] A fifth receiving module is configured to receive third information sent by the terminal, where the third information is used to configure the fifth information; the third information includes at least one of the following:

[0477] location information of the terminal;

[0478] A difference in transmission delay between a service link of the first cell under the first satellite and a service link of the first cell under the second satellite;

[0479] A difference in transmission delay between a feedback link of the first cell under the first satellite and a feedback link of the first cell under the second satellite;

[0480] The round trip time between the terminal of the first cell under the second satellite and the network side device;

[0481] The transmission delay between the terminal of the first cell under the second satellite and the network side device;

[0482] The round trip time of the service link of the first cell under the second satellite;

[0483] The transmission delay of the service link of the first cell under the second satellite;

[0484] The round trip time of the feedback link of the first cell under the second satellite;

[0485] Transmission delay of a feedback link of the first cell under the second satellite;

[0486] The first satellite is a satellite to which the terminal is connected before uplink synchronization is performed in a RACH-less manner, the second satellite is a satellite to which the terminal is connected after uplink synchronization is performed in a RACH-less manner, and the first cell is a service cell for the terminal.

[0487] The information sending device 50 provided in the embodiment of the present application can achieve Figure 3 The various processes implemented by the method embodiment and achieving the same technical effect are not described here to avoid repetition.

[0488] like Figure 6 As shown, the embodiment of the present application further provides a communication device 60, including a processor 61 and a memory 62, and the memory 62 stores a program or instruction that can be run on the processor 61. For example, when the communication device 60 is a terminal, the program or instruction is executed by the processor 61 to implement the various steps of the above-mentioned resource acquisition method embodiment, and can achieve the same technical effect. When the communication device 60 is a network side device, the program or instruction is executed by the processor 61 to implement the various steps of the above-mentioned information sending method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0489] The embodiment of the present application also provides a terminal, including a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run a program or instruction to implement the following Figure 2 The steps in the method embodiment shown. This terminal embodiment corresponds to the above-mentioned terminal side method embodiment, and each implementation process and implementation mode of the above-mentioned method embodiment can be applied to this terminal embodiment and can achieve the same technical effect.

[0490] Specifically, Figure 7 A schematic diagram of the hardware structure of a terminal for implementing an embodiment of the present application.

[0491] The terminal 700 includes but is not limited to: a radio frequency unit 701, a network module 702, an audio output unit 703, an input unit 704, a sensor 705, a display unit 706, a user input unit 707, an interface unit 708, a memory 709 and at least some of the components of a processor 710.

[0492] Those skilled in the art will appreciate that the terminal 700 may also include a power source (such as a battery) for supplying power to various components, and the power source may be logically connected to the processor 710 through a power management system, thereby implementing functions such as managing charging, discharging, and power consumption management through the power management system. Figure 7 The terminal structure shown in the figure does not constitute a limitation on the terminal. The terminal may include more or fewer components than shown in the figure, or combine certain components, or arrange the components differently, which will not be described in detail here.

[0493] It should be understood that in the embodiment of the present application, the input unit 704 may include a graphics processing unit (GPU) 7041 and a microphone 7042, and the graphics processor 7041 processes the image data of a static picture or video obtained by an image capture device (such as a camera) in a video capture mode or an image capture mode. The display unit 706 may include a display panel 7061, and the display panel 7061 may be configured in the form of a liquid crystal display, an organic light emitting diode, etc. The user input unit 707 includes a touch panel 7071 and at least one of other input devices 7072. The touch panel 7071 is also called a touch screen. The touch panel 7071 may include two parts: a touch detection device and a touch controller. Other input devices 7072 may include, but are not limited to, a physical keyboard, function keys (such as a volume control button, a switch button, etc.), a trackball, a mouse, and a joystick, which will not be repeated here.

[0494] In the embodiment of the present application, after receiving downlink data from the network side device, the RF unit 701 can transmit the data to the processor 710 for processing; in addition, the RF unit 701 can send uplink data to the network side device. Generally, the RF unit 701 includes but is not limited to an antenna, an amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, etc.

[0495] The memory 709 can be used to store software programs or instructions and various data. The memory 709 may mainly include a first storage area for storing programs or instructions and a second storage area for storing data, wherein the first storage area may store an operating system, an application program or instruction required for at least one function (such as a sound playback function, an image playback function, etc.), etc. In addition, the memory 709 may include a volatile memory or a non-volatile memory. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM), a static random access memory (SRAM), a dynamic random access memory (DRAM), a synchronous dynamic random access memory (SDRAM), a double data rate synchronous dynamic random access memory (DDRSDRAM), an enhanced synchronous dynamic random access memory (ESDRAM), a synchronous link dynamic random access memory (SLDRAM) and a direct memory bus random access memory (DRRAM). The memory 709 in the embodiment of the present application includes but is not limited to these and any other suitable types of memory.

[0496] The processor 710 may include one or more processing units; optionally, the processor 710 integrates an application processor and a modem processor, wherein the application processor mainly processes operations related to an operating system, a user interface, and application programs, and the modem processor mainly processes wireless communication signals, such as a baseband processor. It is understandable that the modem processor may not be integrated into the processor 710.

[0497] Among them, the processor 710 is used to obtain time information, and the time information is used to obtain uplink authorization resources; according to the time information, uplink authorization resources are obtained; the uplink authorization resources are used for the terminal 700 to perform at least one of the following processes: RACH-less switching without random access process; performing uplink synchronization through RACH-less.

[0498] It can be understood that the implementation process of each implementation method mentioned in this embodiment can refer to the relevant description of the above-mentioned resource acquisition method embodiment, and achieve the same or corresponding technical effect. To avoid repetition, it will not be repeated here.

[0499] The embodiment of the present application also provides a network side device, including a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run a program or instruction to implement the following Figure 3 The steps of the method embodiment shown. This network side device embodiment corresponds to the above network side device method embodiment, and each implementation process and implementation mode of the above method embodiment can be applied to this network side device embodiment and can achieve the same technical effect.

[0500] Specifically, the embodiment of the present application also provides a network side device. Figure 8 As shown, the network side device 80 includes: an antenna 81, a radio frequency device 82, a baseband device 83, a processor 84 and a memory 85. The antenna 81 is connected to the radio frequency device 82. In the uplink direction, the radio frequency device 82 receives information through the antenna 81 and sends the received information to the baseband device 83 for processing. In the downlink direction, the baseband device 83 processes the information to be sent and sends it to the radio frequency device 82. The radio frequency device 82 processes the received information and sends it out through the antenna 81.

[0501] The method executed by the network-side device in the above embodiment may be implemented in the baseband device 83, which includes a baseband processor.

[0502] The baseband device 83 may include, for example, at least one baseband board on which a plurality of chips are arranged. Figure 8 As shown, one of the chips is, for example, a baseband processor, which is connected to the memory 85 through a bus interface to call the program in the memory 85 to execute the network device operations shown in the above method embodiment.

[0503] The network side device may further include a network interface 86, which is, for example, a Common Public Radio Interface (CPRI).

[0504] Specifically, the network side device 80 of the embodiment of the present application further includes: instructions or programs stored in the memory 85 and executable on the processor 84, and the processor 84 calls the instructions or programs in the memory 85 to execute. Figure 5 The methods executed by each module shown in the figure achieve the same technical effects, so they will not be described here to avoid repetition.

[0505] An embodiment of the present application also provides a readable storage medium, on which a program or instruction is stored. When the program or instruction is executed by a processor, the various processes of the above-mentioned resource acquisition method embodiment are implemented, or the various processes of the above-mentioned information sending method embodiment are implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0506] The processor is the processor in the terminal described in the above embodiment. The readable storage medium includes a computer readable storage medium, such as a computer read-only memory ROM, a random access memory RAM, a magnetic disk or an optical disk. In some examples, the readable storage medium may be a non-transient readable storage medium.

[0507] An embodiment of the present application further provides a chip, which includes a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the various processes of the above-mentioned resource acquisition method embodiment, or to implement the various processes of the above-mentioned information sending method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0508] It should be understood that the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.

[0509] The embodiments of the present application further provide a computer program / program product, which is stored in a storage medium, and is executed by at least one processor to implement the various processes of the above-mentioned resource acquisition method embodiment, or to implement the various processes of the above-mentioned information sending method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0510] An embodiment of the present application also provides a communication system, including: a terminal and a network side device, wherein the terminal can be used to execute the steps of the resource acquisition method described above, and the network side device can be used to execute the steps of the information sending method described above.

[0511] It should be noted that, in this article, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "including one..." do not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0512] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of a computer software product plus a necessary general hardware platform, and of course, can also be implemented by hardware. The computer software product is stored in a storage medium (such as ROM, RAM, disk, CD, etc.), including several instructions to enable a terminal or a network-side device to execute the methods described in each embodiment of the present application.

[0513] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms of implementation methods without departing from the purpose of the present application and the scope of protection of the claims, and these implementation methods are all within the protection of the present application.

Claims

1. A resource acquisition method, characterized in that: include: The terminal obtains time information, where the time information is used to obtain uplink authorization resources; The terminal obtains uplink authorization resources according to the time information; The uplink authorization resource is used by the terminal to perform at least one of the following processes: RACH-less handover without random access process; Uplink synchronization is performed in a RACH-less manner.

2. The method according to claim 1, characterized in that The obtaining of time information includes: The terminal receives at least one uplink grant and at least one first time window sent by a network side device, there is a corresponding relationship between the at least one uplink grant and the at least one first time window, and each of the uplink grants is related to the first cell; The acquiring of uplink authorization resources according to the time information includes at least one of the following: The terminal considers, within the at least one first time window, that an uplink authorization corresponding to the at least one first time window is valid; The terminal applies an uplink grant corresponding to the at least one first time window within the at least one first time window.

3. The method according to claim 2, characterized in that The at least one uplink grant and the at least one first time window satisfy at least one of the following: In the case where there is only one first time window, the first time window corresponds to the at least one uplink grant; In the case where there are at least two first time windows, the number of the first time windows is the same as the number of the uplink grants, and each first time window corresponds to one uplink grant; In the case that the number of the uplink grant is only one, the number of the first time windows corresponding to the uplink grant is one.

4. The method according to claim 2, characterized in that: The at least one uplink grant satisfies at least one of the following: When there is only one uplink grant and the first cell has only one beam, the uplink grant corresponds to the beam of the first cell; When there is only one uplink grant and the first cell has multiple beams, the uplink grant corresponds to the beam of the first cell selected by the terminal; When the number of the uplink grants is at least two and the first cell has multiple beams, each of the uplink grants corresponds to at least one beam of the first cell.

5. The method according to claim 2, characterized in that: The method further comprises: The terminal releases the uplink authorization corresponding to the at least one first time window at the end time of the at least one first time window.

6. The method according to any one of claims 2 to 5, characterized in that: The first time window is indicated by at least one of the following: a start time of the first time window, and a duration of the first time window; The start time and end time of the first time window; The related information of the first timer includes at least one of the following: the start time of the first timer and the running length of the first timer.

7. The method according to claim 1, characterized in that The obtaining of time information includes: The terminal receives at least one second time window sent by the network side device; The acquiring of uplink authorization resources according to the time information includes at least one of the following: The terminal monitors a physical downlink control channel PDCCH of the first cell in each of the second time windows, and acquires uplink authorization resources according to the monitored PDCCH; The terminal monitors the PDCCH of the first cell within a second time window corresponding to the first beam, and obtains uplink authorization resources according to the monitored PDCCH; wherein the first beam is the beam of the first cell selected by the terminal.

8. The method according to claim 7, characterized in that The second time window is indicated by at least one of the following: a start time of the second time window, and a duration of the second time window; The start time and end time of the second time window; The relevant information of the second timer includes at least one of the following: the start time of the second timer and the running length of the second timer.

9. The method according to any one of claims 2 to 8, characterized in that: Before acquiring the time information, the method further includes: The terminal reports first information, where the first information is used to configure the time information; The first information includes at least one of the following: location information of the terminal; a difference in transmission delay between a service link of the serving cell and a service link of the first cell; a difference in transmission delay between a feedback link of the serving cell and a feedback link of the first cell; The round trip time between the terminal and the network side device of the first cell; The transmission delay between the terminal of the first cell and the network side device; The round trip time of the serving link of the first cell; The transmission delay of the service link of the first cell; a round trip time of a feedback link of the first cell; The transmission delay of the feedback link of the first cell.

10. The method according to any one of claims 2 to 9, characterized in that: In a case where the uplink granted resource is used by the terminal to perform RACH-less handover, the first cell is a target cell for the RACH-less handover; or, In a case where the uplink grant resource is used by the terminal to perform uplink synchronization in a RACH-less manner, the first cell is a serving cell of the terminal.

11. The method according to claim 9 or 10, characterized in that: Before reporting the first information, the method further includes: The terminal receives second information, where the second information is used to instruct the terminal to report first information or to indicate the first cell; The second information includes at least one of the following: first indication information, where the first indication information is used to instruct or enable the terminal to report first information; an index value, where the index value is used to indicate relevant information of the first cell; a frequency of the first cell; A physical cell identifier PCI of the first cell.

12. The method according to claim 11, characterized in that The index value satisfies at least one of the following: Corresponding to the neighbor cell list in the system information block SIB19; Corresponding to the extended neighbor cell list in the system information block SIB19; Corresponding to the neighbor cell list in the first configuration, the first configuration is carried by a radio resource control RRC reconfiguration message.

13. The method according to any one of claims 9 to 12, characterized in that: The first information also includes at least one of the following: At least one of the following of the first cell: frequency information, PCI, global cell identity CGI, and cell ID CellID; The terminal selects the beam of the first cell.

14. The method according to any one of claims 9 to 13, characterized in that: The reporting of the first information includes: When the first cell meets a conditional switching triggering event, the terminal reports the first information.

15. The method according to claim 14, characterized in that Before reporting the first information, the method further includes: The terminal receives second indication information sent by the network side device, where the second indication information is used to instruct or enable the terminal to report first information when the first cell meets a conditional switching trigger event.

16. The method according to any one of claims 2 to 8, characterized in that Before acquiring the time information, the method further includes: The terminal reports third information, where the third information is used to configure the time information; The third information includes at least one of the following: location information of the terminal; A difference in transmission delay between a service link of the first cell under the first satellite and a service link of the first cell under the second satellite; A difference in transmission delay between a feedback link of the first cell under the first satellite and a feedback link of the first cell under the second satellite; The round trip time between the terminal of the first cell under the second satellite and the network side device; The transmission delay between the terminal of the first cell under the second satellite and the network side device; The round trip time of the service link of the first cell under the second satellite; The transmission delay of the service link of the first cell under the second satellite; The round trip time of the feedback link of the first cell under the second satellite; Transmission delay of a feedback link of the first cell under the second satellite; The first satellite is a satellite to which the terminal is connected before uplink synchronization is performed in a RACH-less manner, the second satellite is a satellite to which the terminal is connected after uplink synchronization is performed in a RACH-less manner, and the first cell is a service cell for the terminal.

17. The method according to claim 16, characterized in that The reporting of the third information includes: The terminal reports the third information before a first time; wherein the first time is used to indicate a time when the terminal needs to perform uplink synchronization.

18. The method according to claim 17, characterized in that The reporting of the third information before the first time includes: The terminal reports the third information at a second time, where the second time is before the first time; Wherein, the second time satisfies at least one of the following: Configured by network-side devices; The first offset value is determined according to the first time and the first offset value, where the first offset value is configured by a network-side device and is used to determine the second time.

19. The method according to claim 17, characterized in that Before reporting the third information before the first time, the method further includes: The terminal receives third indication information sent by the network side device, where the third indication information is used to instruct or enable the terminal to report the third information before the first time.

20. The method according to claim 1, characterized in that The obtaining of time information includes: The terminal acquires a third time; The acquiring of uplink authorization resources according to the time information includes: The terminal starts to monitor the PDCCH of the second cell at the third time, and acquires uplink authorization resources according to the monitored PDCCH.

21. The method according to claim 20, characterized in that The second cell is any one of the following: The target cell for handover; Candidate cells for conditional handover; A serving cell, wherein the serving cell is a cell under a first satellite before uplink synchronization is performed in a RACH-less manner, and is a cell under a second satellite after uplink synchronization is performed in a RACH-less manner.

22. The method according to claim 20 or 21, characterized in that The obtaining of the third time includes at least one of the following: determining the third time according to the fourth time and a transmission delay of a feedback link of the second cell; Determine the third time according to the fourth time and a common timing advance parameter of the second cell; Determine the third time according to the fourth time and the transmission delay between the terminal and the network side device of the second cell; Determine the third time according to the fourth time and the shortest transmission delay of the second cell; The fourth time satisfies any one of the following: In a case where the uplink grant resource is used by the terminal to perform RACH-less switching, the fourth time is the time when the terminal receives the RACH-less switching command; When the uplink authorization resource is used for the terminal to perform RACH-less switching and the terminal is configured with conditional switching, the fourth time is any one of the following: a time corresponding to a time-based conditional switching triggering event of the second cell, a time when the conditional switching triggering event of the second cell is satisfied, and a time when the terminal successfully sends the fourth information; In a case where the uplink grant resource is used for the terminal to perform uplink synchronization in a RACH-less manner, the fourth time is a time for the terminal to perform uplink synchronization in a RACH-less manner.

23. The method according to claim 22, characterized in that The third time satisfies at least one of the following: The third time is equal to the sum of the fourth time and the transmission delay of the feedback link of the second cell; The third time is equal to the sum of the fourth time and the time indicated by the common timing advance parameter of the second cell; The third time is equal to the sum of the fourth time and the fifth time, and the fifth time is equal to half of the time indicated by the common timing advance parameter of the second cell; The third time is equal to the sum of the fourth time and the transmission delay between the terminal and the network side device of the second cell; The third time is equal to the sum of the fourth time and the shortest transmission delay of the second cell.

24. The method according to claim 22, characterized in that The shortest transmission delay of the second cell is determined according to at least one of the following: a reference position of the second cell, ephemeris information, a common timing advance parameter of the second cell, and a scheduling offset of the second cell.

25. The method according to any one of claims 20 to 24, characterized in that When the second cell is a candidate cell for conditional switching, the method further includes: When a conditional handover triggering event of the second cell is met, the terminal sends fourth information, where the fourth information includes at least one of the following: Fourth indication information, where the fourth indication information is used to indicate that the second cell is a target cell for conditional switching; fifth indication information, where the fifth indication information is used to indicate that a conditional handover triggering event of the second cell is satisfied; At least one of the following of the second cell: frequency information, PCI, CGI, CellID.

26. A method for sending information, characterized in that: include: The network side device sends fifth information to the terminal; wherein the fifth information is used to obtain uplink authorization resources, and the fifth information includes at least one of the following: At least one uplink grant and at least one first time window, there is a corresponding relationship between the at least one uplink grant and the at least one first time window, and each of the uplink grants is related to the first cell; At least one second time window.

27. The method according to claim 26, characterized in that The at least one uplink grant and the at least one first time window satisfy at least one of the following: In the case where there is only one first time window, the first time window corresponds to the at least one uplink grant; In the case where there are at least two first time windows, the number of the first time windows is the same as the number of the uplink grants, and each first time window corresponds to one uplink grant; In the case that the number of the uplink grant is only one, the number of the first time windows corresponding to the uplink grant is one.

28. The method according to claim 26, characterized in that The at least one uplink grant satisfies at least one of the following: When there is only one uplink grant and the first cell has only one beam, the uplink grant corresponds to the beam of the first cell; When there is only one uplink grant and the first cell has multiple beams, the uplink grant corresponds to the beam of the first cell selected by the terminal; When the number of the uplink grants is at least two and the first cell has multiple beams, each of the uplink grants corresponds to at least one beam of the first cell.

29. The method according to any one of claims 26 to 28, characterized in that The first time window is indicated by at least one of the following: a start time of the first time window, and a duration of the first time window; The start time and end time of the first time window; Related information of a first timer, wherein the related information of the first timer includes at least one of the following: a start time of the first timer and a running length of the first timer; or, The second time window is indicated by at least one of the following: a start time of the second time window, and a duration of the second time window; The start time and end time of the second time window; The relevant information of the second timer includes at least one of the following: the start time of the second timer and the running length of the second timer.

30. The method according to any one of claims 26 to 29, characterized in that Before sending the fifth information to the terminal, the method further includes: The network side device receives first information sent by the terminal, where the first information is used to configure the fifth information; The first information includes at least one of the following: location information of the terminal; a difference in transmission delay between a service link of the serving cell and a service link of the first cell; a difference in transmission delay between a feedback link of the serving cell and a feedback link of the first cell; The round trip time between the terminal and the network side device of the first cell; The transmission delay between the terminal of the first cell and the network side device; The round trip time of the serving link of the first cell; The transmission delay of the service link of the first cell; a round trip time of a feedback link of the first cell; The transmission delay of the feedback link of the first cell.

31. The method according to any one of claims 26 to 30, characterized in that In a case where the uplink granted resource is used by the terminal to perform RACH-less handover, the first cell is a target cell for the RACH-less handover; or, In a case where the uplink grant resource is used by the terminal to perform uplink synchronization in a RACH-less manner, the first cell is a serving cell of the terminal.

32. The method according to claim 30 or 31, characterized in that Before receiving the first information sent by the terminal, the method further includes: The network side device sends second information to the terminal, where the second information is used to instruct the terminal to report the first information or to indicate the first cell; The second information includes at least one of the following: first indication information, where the first indication information is used to instruct the terminal to report first information; an index value, where the index value is used to indicate relevant information of the first cell; a frequency of the first cell; A physical cell identifier PCI of the first cell.

33. The method according to claim 32, characterized in that The index value satisfies at least one of the following: Corresponds to the neighbor cell list in SIB19; Corresponds to the extended neighbor cell list in SIB19; Corresponding to the neighbor cell list in the first configuration, the first configuration is carried by the RRC reconfiguration message.

34. The method according to any one of claims 26 to 29, characterized in that Before sending the fifth information to the terminal, the method further includes: The network side device receives third information sent by the terminal, where the third information is used to configure the fifth information; The third information includes at least one of the following: location information of the terminal; A difference in transmission delay between a service link of the first cell under the first satellite and a service link of the first cell under the second satellite; A difference in transmission delay between a feedback link of the first cell under the first satellite and a feedback link of the first cell under the second satellite; The round trip time between the terminal of the first cell under the second satellite and the network side device; The transmission delay between the terminal of the first cell under the second satellite and the network side device; The round trip time of the service link of the first cell under the second satellite; The transmission delay of the service link of the first cell under the second satellite; The round trip time of the feedback link of the first cell under the second satellite; Transmission delay of a feedback link of the first cell under the second satellite; The first satellite is a satellite to which the terminal is connected before uplink synchronization is performed in a RACH-less manner, the second satellite is a satellite to which the terminal is connected after uplink synchronization is performed in a RACH-less manner, and the first cell is a service cell for the terminal.

35. A resource acquisition device, characterized in that: include: A first acquisition module, used to acquire time information, where the time information is used to acquire uplink authorization resources; A second acquisition module, used to acquire uplink authorization resources according to the time information; The uplink authorization resource is used by the terminal to perform at least one of the following processes: RACH-less handover without random access process; Uplink synchronization is performed in a RACH-less manner.

36. An information sending device, characterized in that: include: The second sending module is configured to send fifth information to the terminal; wherein the fifth information is used to obtain uplink authorization resources, and the fifth information includes at least one of the following: At least one uplink grant and at least one first time window, there is a corresponding relationship between the at least one uplink grant and the at least one first time window, and each of the uplink grants is related to the first cell; At least one second time window.

37. A terminal, characterized in that: It includes a processor and a memory, the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, the steps of the resource acquisition method as described in any one of claims 1 to 25 are implemented.

38. A network side device, characterized in that: It includes a processor and a memory, the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, the steps of the information sending method as described in any one of claims 26 to 34 are implemented.

39. A readable storage medium, characterized in that: The readable storage medium stores programs or instructions, and when the programs or instructions are executed by the processor, the steps of the resource acquisition method as described in any one of claims 1 to 25 are implemented, or the steps of the information sending method as described in any one of claims 26 to 34 are implemented.

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