Wireless communication method, terminal and network side equipment

Abstract

The invention discloses a wireless communication method, a terminal and network side equipment, and belongs to the field of communication, and the wireless communication method comprises the steps that the terminal uses a first determination mode to determine target ephemeris information used by the terminal; wherein the first determination mode is a mode in which the terminal determines the target ephemeris information based on first ephemeris information stored in the terminal.

Description

Technical Field

[0001] This application belongs to the field of communication technology, specifically relating to a wireless communication method, terminal, and network-side equipment. Background Technology

[0002] In New Radio (NR) Non-Terrestrial Network (NTN) scenarios, terminals typically need to obtain ephemeris information from access satellites or neighboring satellites for time and frequency offset pre-compensation and mobility management during cell access.

[0003] In related technologies, ephemeris information is usually broadcast through a System Information Block (SIB) 19, which is characterized by periodic updates. Therefore, the terminal needs to periodically receive and update the ephemeris information to ensure its accuracy.

[0004] However, the periodic reception and updating of ephemeris information by the terminal increases the transmission overhead and latency of the ephemeris information. Summary of the Invention

[0005] This application provides a wireless communication method, terminal, and network-side device that can reduce the transmission overhead and latency of ephemeris information.

[0006] In a first aspect, a wireless communication method is provided, executed by a terminal, the method comprising:

[0007] The terminal uses a first determination method to determine the target ephemeris information used by the terminal;

[0008] The first determination method is a method in which the terminal determines the target ephemeris information based on the first ephemeris information stored in the terminal.

[0009] Secondly, a wireless communication method is provided, executed by a network-side device, the method comprising:

[0010] The network-side device sends first information to the terminal, the first information being used to determine the first ephemeris information or the update information of the first ephemeris information stored on the terminal.

[0011] Thirdly, a wireless communication device is provided, comprising:

[0012] The processing module is used to determine the target ephemeris information used by the terminal using a first determination method;

[0013] The first determination method is a method in which the terminal determines the target ephemeris information based on the first ephemeris information stored in the terminal.

[0014] Fourthly, a wireless communication device is provided, comprising:

[0015] A communication module is used to send first information to a terminal, the first information being used to determine first ephemeris information or update information of the first ephemeris information stored on the terminal.

[0016] Fifthly, a wireless communication device is provided, the device being configured to perform the steps of the method described in the first aspect, or to implement the steps of the method described in the second aspect.

[0017] In a sixth aspect, a terminal is provided, the terminal including a processor and a memory, the memory storing a program or instructions executable on the processor, the program or instructions, when executed by the processor, implementing the steps of the method as described in the first aspect.

[0018] In a seventh aspect, a terminal is provided, including a processor and a communication interface, wherein the processor is used to determine target ephemeris information used by the terminal using a first determination method;

[0019] The first determination method is a method in which the terminal determines the target ephemeris information based on the first ephemeris information stored in the terminal.

[0020] Eighthly, a network-side device is provided, the network-side device including a processor and a memory, the memory storing a program or instructions executable on the processor, the program or instructions, when executed by the processor, implementing the steps of the method as described in the second aspect.

[0021] In a ninth aspect, a network-side device is provided, including a processor and a communication interface, wherein the communication interface is used to send first information to a terminal, the first information being used to determine first ephemeris information or update information of the first ephemeris information stored on the terminal.

[0022] In a tenth aspect, a readable storage medium is provided, on which a program or instructions are stored, which, when executed by a processor, implement the steps of the method described in the first aspect, or implement the steps of the method described in the second aspect.

[0023] Eleventhly, a wireless communication system is provided, comprising: a terminal and a network-side device, wherein the terminal can be used to perform the steps of the method as described in the first aspect, and the network-side device can be used to perform the steps of the method as described in the second aspect.

[0024] In a twelfth aspect, a chip is provided, the chip including a processor and a communication interface coupled to the processor, the processor being configured to run programs or instructions to implement the method as described in the first aspect, or to implement the method as described in the second aspect.

[0025] In a thirteenth aspect, a computer program / program product is provided, which is stored in a storage medium and is executed by at least one processor to implement the steps of the wireless communication method as described in the first aspect, or to implement the steps of the wireless communication method as described in the second aspect.

[0026] In this embodiment of the application, the terminal uses a first determination method to determine the target ephemeris information used by the terminal; wherein, the first determination method is a method in which the terminal determines the target ephemeris information based on the first ephemeris information stored in the terminal; that is, the terminal can directly determine the target ephemeris information based on the first ephemeris information stored in the terminal, avoiding the determination of the target ephemeris information based on the ephemeris information obtained by the terminal from SIB19, thereby reducing the transmission overhead and transmission latency of the ephemeris information. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of a communication system architecture provided in an embodiment of this application.

[0028] Figure 2 This is a schematic diagram of another communication system architecture provided in the embodiments of this application.

[0029] Figures 3 to 7 This is a schematic flowchart of the wireless communication method provided in the embodiments of this application.

[0030] Figure 8 This is a schematic diagram of a data plane provided in an embodiment of this application.

[0031] Figure 9 This is a schematic diagram of a data plane protocol architecture for terminating in a wireless access network, provided in an embodiment of this application.

[0032] Figure 10 This is a schematic diagram of a data plane protocol architecture for a UE, a radio access network, and a core network provided in an embodiment of this application.

[0033] Figure 11 This is a schematic diagram of the data plane carrying provided in the embodiments of this application.

[0034] Figure 12 This is a schematic flowchart of another wireless communication method provided in the embodiments of this application.

[0035] Figure 13This is a schematic block diagram of a wireless communication device provided in an embodiment of this application.

[0036] Figure 14 This is a schematic block diagram of another wireless communication device provided in the embodiments of this application.

[0037] Figure 15 This is a schematic block diagram of a communication device provided in an embodiment of this application.

[0038] Figure 16 This is a schematic diagram of the hardware structure of a terminal provided in an embodiment of this application.

[0039] Figure 17 This is a schematic block diagram of a network-side device provided in an embodiment of this application. Detailed Implementation

[0040] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0041] The terms "first," "second," etc., used in this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first" and "second" are generally of the same class, not limited in number; for example, the first object can be one or more. Furthermore, "or" in this application indicates at least one of the connected objects. For example, the scope of protection for "A or B" covers at least three scenarios: Scenario 1: including A but not B; Scenario 2: including B but not A; Scenario 3: including both A and B. In addition, the terms "A and / or B," "at least one of A and B," and "at least one of A or B" also cover at least the above three scenarios. The character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0042] The term "instruction" in this application can be either a direct instruction (or explicit instruction) or an indirect instruction (or implicit instruction). A direct instruction can be understood as one in which the sender explicitly informs the receiver of specific information, the operation to be performed, or the requested result, etc., in the instruction sent. An indirect instruction can be understood as one in which the receiver determines the corresponding information based on the instruction sent by the sender, or makes a judgment and determines the operation to be performed or the requested result, etc., based on the judgment result.

[0043] It is worth noting that the technologies described in this application are not limited to Long Term Evolution (LTE) / LTE-Advanced (LTE-A) systems, 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 this application are often used interchangeably, and the described technologies can be used with the systems and radio technologies mentioned above, as well as with other systems and radio technologies. The following description describes New Radio (NR) systems for illustrative purposes, and the term NR is used in most of the following description; however, these technologies can also be applied to systems other than NR systems, such as 6th generation (6G) radio systems. th Generation 6G communication system.

[0044] Figure 1This diagram illustrates a block diagram of a wireless communication system applicable to embodiments of this application. The wireless communication system includes a terminal 11 and a network-side device 12. The terminal 11 can be a mobile phone, tablet computer, laptop computer, notebook computer, personal digital assistant (PDA), handheld computer, netbook, ultra-mobile personal computer (UMPC), mobile internet device (MID), augmented reality (AR), virtual reality (VR) device, robot, wearable device, flight vehicle, vehicle user equipment (VUE), shipboard equipment, pedestrian user equipment (PUE), smart home devices (home appliances with wireless communication capabilities, such as refrigerators, televisions, washing machines, or furniture), game consoles, personal computers (PCs), ATMs, or self-service machines, etc. Wearable devices include: smartwatches, smart bracelets, smart headphones, smart glasses, smart jewelry (smart bracelets, smart chains, smart rings, smart necklaces, smart anklets, smart anklets, etc.), smart wristbands, smart clothing, etc. Among these, in-vehicle devices can also be referred to as in-vehicle terminals, in-vehicle controllers, in-vehicle modules, in-vehicle components, in-vehicle chips, or in-vehicle units, etc. It should be noted that the specific type of terminal 11 is not limited in this application embodiment. Network-side equipment 12 may include access network equipment or core network equipment, wherein access network equipment may also be referred to as Radio Access Network (RAN) equipment, radio access network function, or radio access network unit. Access network equipment may include base stations, Wireless Local Area Network (WLAN) access points (AS), or Wireless Fidelity (WiFi) nodes, etc.The term "base station" can be referred to as Node B (NB), Evolved Node B (eNB), Next Generation Node B (gNB), New Radio Node B (NR Node B), Access Point, Relay Base Station (RBS), Serving Base Station (SBS), Base Transceiver Station (BTS), Radio Base Station, Radio Transceiver, Basic Service Set (BSS), Extended Service Set (ESS), Home Node B (HNB), Home Evolved Node B, Transmit / Receive Point (TRP), or any other suitable term in the relevant field, as long as the same technical effect is achieved. The term "base station" is not limited to any specific technical terminology. It should be noted that this application embodiment only uses a base station in an NR system as an example for description and does not limit the specific type of base station.

[0045] To facilitate a better understanding of the embodiments of this application, the related technologies are described.

[0046] (1) Non-Terrestrial Networks (NTN).

[0047] Non-terrestrial networks refer to networks or network segments that use satellite or unmanned aircraft system (UAS) platforms for transmission. Compared to terrestrial communication systems, satellite-based non-terrestrial communication systems have a wider coverage range. Typical applicable scenarios include situations where it is impossible to build terrestrial base stations or where terrestrial base stations are damaged, such as continuous coverage in remote mountainous areas, deserts, oceans, and forests, or emergency communication when terrestrial base stations are damaged due to natural disasters.

[0048] Satellites include low Earth Orbiting (LEO) satellites, medium Earth Orbiting (MEO) satellites, geostationary Earth Orbiting (GEO) satellites, and highly elliptical orbit (HEO) satellites.

[0049] NTN communication systems include two types: transparent payload-based NTN communication systems and regenerative payload-based NTN communication systems. In 3GPP Releases 17 and 18, only transparent payload-based NTN communication systems are considered. In this deployment environment, terminals, base stations, and core network equipment are all deployed on the ground, and communication data between terminals and network-side equipment is relayed via satellite. In this system, the satellite is only used to relay data between the base station and the terminal; it does not decode or process this data. For regenerative payload-based NTN communication systems, the satellite has some or all of the base station functions and can decode and process uplink or downlink data, such as... Figure 2 As shown, the link between the satellite and the terminal is a service link, and the link between the satellite and the ground gateway is a feeder link.

[0050] (2) Ephemeral information.

[0051] In the NR protocol, SIB19 contains satellite auxiliary information for NTN access, which includes ephemeris information.

[0052] The satellite auxiliary information includes the following:

[0053]

[0054] The ephemeris information can be ntn-Config-r17. ntn-Config-r17 provides parameters for terminals to access NR via NTN.

[0055]

[0056] As shown above, Epoch time and ntn-UlSyncValidityDuration-r17 constitute the effective time of the serving cell's satellite auxiliary information. The period starting from Epoch time and lasting ntn-UlSyncValidityDuration-r17 represents the maximum time the terminal can apply auxiliary information without obtaining new information. If this effective time expires, the terminal should reacquire satellite auxiliary information. Therefore, ephemeris information is periodically sent with sib19. After parsing, the terminal calculates the time and frequency offset information within the effective time for uplink and downlink access and transmission. This process necessitates the terminal continuously updating the ephemeris of the serving cell and neighboring cells, increasing the terminal's workload.

[0057] (3) The repetition period of satellite orbits.

[0058] The orbital repetition period of a satellite refers to the time interval between satellites returning to almost the same position on the Earth's surface. This period is particularly important for Earth observation satellites because it determines how often a satellite can observe the same location on Earth, thus affecting the frequency of data updates and the coverage area.

[0059] A satellite's revisit period depends on its orbital parameters, particularly its inclination and altitude. By carefully designing these parameters, a satellite can return to a position close to its original starting point after a certain number of days, forming a pattern of repeatedly covering the Earth's surface. This period is usually expressed in days and is called the revisit period or repeat cycle. Calculating the repeat cycle is relatively complex, involving orbital mechanics and spherical geometry. Essentially, it requires resolving the relationship between the satellite's orbital period and the Earth's rotation period, as well as the influence of nodal precession. Nodal precession is caused by the Earth's non-spherical mass distribution, resulting in a slow rotation of the orbital plane relative to the Earth's surface.

[0060] The factors affecting the repetition cycle are related to the following factors.

[0061] 1) Track height.

[0062] The lower the orbital altitude, the shorter the time it takes for a satellite to orbit the Earth, but this does not directly determine the repetition period. The repetition period is designed by adjusting orbital parameters to match the time it takes for a point on the Earth's surface to pass over the top of the Earth again.

[0063] 2) Track inclination.

[0064] The orbital inclination determines the latitudinal range of the Earth's surface covered by a satellite. The greater the inclination, the higher the latitude the satellite can cover, but it also affects the design of the repeat cycle.

[0065] 3) Earth's rotation.

[0066] The Earth's daily rotation relative to the satellite also needs to be taken into account, as it affects the satellite's movement relative to the ground.

[0067] 4) Node precession.

[0068] The Earth’s non-spherical mass distribution causes slow precession of orbital nodes, which is crucial for designing long-term stable repetitive cycles.

[0069] For Earth observation satellites, especially those used for environmental monitoring, agricultural observation, urban planning, and defense reconnaissance, a precise repeat cycle allows them to periodically monitor changes in a specific area. For example, if a satellite is designed with a 16-day repeat cycle, it can return to almost the same position on the Earth's surface every 16 days, providing updated information about that area.

[0070] The repeat cycle of satellite orbits requires a trade-off between coverage, resolution, and revisit requirements. Shorter repeat cycles allow for more frequent updates but may require more satellites to achieve global coverage. Furthermore, orbital congestion and space debris are also important factors to consider during the design phase, especially in highly congested LEO regions.

[0071] In summary, the repetition period of a satellite's orbit is a key parameter that affects its monitoring capabilities and mission efficiency. By carefully designing orbital parameters, the satellite's repeat coverage performance can be optimized to meet specific monitoring and communication needs.

[0072] The wireless communication method provided in this application will be described in detail below with reference to the accompanying drawings and through some embodiments and application scenarios.

[0073] Figure 3 This is a schematic flowchart of a wireless communication method 200 according to an embodiment of this application.

[0074] like Figure 3 As shown, the wireless communication method 200 may include at least some of the following:

[0075] S201, the terminal uses a first determination method to determine the target ephemeris information used by the terminal;

[0076] The first determination method is a method in which the terminal determines the target ephemeris information based on the first ephemeris information stored in the terminal.

[0077] For example, the first ephemeris information may be the ephemeris information of a single satellite, or the first ephemeris information may include the ephemeris information of multiple satellites. It should be understood that the first ephemeris information may also be referred to as an ephemeris information table, an ephemeris information set, or other terms with similar meanings, and this application does not specifically limit it in this regard.

[0078] In this embodiment, the terminal can directly determine the target ephemeris information based on the first ephemeris information stored in the terminal, avoiding the need to determine the target ephemeris information based on the ephemeris information obtained by the terminal from SIB19. This reduces the transmission overhead and latency of the ephemeris information. For example, some low-capability terminals can achieve NTN communication even without continuously monitoring SIB19, and even older versions of terminals can achieve NTN communication through an "external" method. Thus, the method provided in this application can achieve NTN communication while reducing the transmission overhead and latency of the ephemeris information.

[0079] In some embodiments, the first ephemeris information includes at least one of the following:

[0080] The ephemeris information stored in the subscriber identity module (SIM);

[0081] Random Access Memory (RAM) stores ephemeris information.

[0082] For example, the first ephemeris information can be stored in two ways: one is SIM storage, and the other is terminal RAM storage. The former has a limited data storage capacity but is easy to replace with different devices; the latter has no data size limit but is strongly tied to the device.

[0083] For example, the storage method of the first ephemeris information is determined based on the size of the first ephemeris information. The size of the ephemeris information is related to three main factors: orbital repetition period, the number of available orbits within a region, and the number of regions.

[0084] The orbital repetition period, taking a typical LEO as an example, ranges from a few days to several weeks. Let's assume an idealized LEO orbit of 500km with a period of 16 days. The basic ephemeris set requires 16 SIB19s. Since the basic ephemeris set only provides one ephemeris per orbit, it's primarily for verification purposes and cannot be used for estimating the time and frequency offsets of the entire orbit. The extended ephemeris set can be based on T430 (assuming T430 = 50s). Assuming 14 SIB19s are needed during the overpass time, there are a total of 16 × 14 = 224 SIB19s. The extended ephemeris set can support time and frequency offset estimation of the entire orbit without changing the orbit. The complete ephemeris set requires 16 full-cycle SIB19s. Assuming a full cycle contains 7000 SIB19s, a total of 16 * 7000 = 120k SIB19s are needed. It is evident that the terminal, based on its own capabilities, compromises between the extended ephemeris information set and the complete ephemeris information set to support the minimum ephemeris information set required for estimating the time-frequency offset of the entire orbit.

[0085] The number of available orbits in a region can be understood as the total number of available orbits in the region, city, or province in the coming days. In extreme cases, approximately 120 low-Earth orbit satellites are needed to cover a unified GPS location 24 hours a day.

[0086] The number of regions can indicate the set of regions that can be used across regions; for example, there may be 5-6 supported regions.

[0087] Therefore, the size of the first ephemeris information is determined by the three factors mentioned above, but it should at least be a set of ephemeris information that can support the entire orbital time-frequency offset estimation. This set is based on GPS or other location information and can be optimized and simplified according to the terminal's storage capacity.

[0088] In some embodiments, the first ephemeris information includes ephemeris information corresponding to the region where the terminal is located.

[0089] For example, the ephemeris information corresponding to the region where the terminal is located may include at least one of the following: ephemeris information corresponding to a first-level region and ephemeris information corresponding to a second-level region. The ephemeris information corresponding to the first-level region includes the ephemeris information corresponding to the second-level region. For example, the first-level region may be a national region or a regional region, and the second-level region may be a provincial region or a city region.

[0090] In some embodiments, S201 includes:

[0091] The terminal accesses the cell based on the first ephemeris information; if the terminal successfully accesses the first cell based on the first ephemeris information, the terminal determines the ephemeris information corresponding to the first cell as the target ephemeris information.

[0092] For example, the ephemeris information corresponding to the first cell may be the ephemeris information of the serving cell or the ephemeris information of the serving satellite.

[0093] For example, if the first ephemeris information is stored on the SIM, the terminal performs cell access based on the first ephemeris information; if the terminal successfully accesses the first cell based on the first ephemeris information, the terminal determines the ephemeris information corresponding to the first cell as the target ephemeris information.

[0094] For example, when the terminal successfully accesses the first cell based on the first ephemeris information, the terminal determines the ephemeris information corresponding to the first cell as the target ephemeris information. Optionally, the terminal may also delete ephemeris information from the first ephemeris information other than the target ephemeris information and the ephemeris information of neighboring cells. Optionally, the terminal may also update the target ephemeris information and the ephemeris information of neighboring cells. For example, the terminal uses the ephemeris information obtained from SIB19 to update the target ephemeris information and the ephemeris information of neighboring cells pre-stored on the SIM. Optionally, the ephemeris information of neighboring cells may be the ephemeris information of neighboring satellites.

[0095] In this embodiment, cell access is performed based on the first ephemeris information stored in the terminal. This means that the terminal can directly estimate time offset and frequency offset information based on the pre-stored ephemeris information, thereby speeding up the cell search process and reducing the search time for the serving cell. In addition, the SIB19 cycle can be idle, so the half-duplex terminal can perform uplink transmission in this cycle, improving data transmission efficiency.

[0096] In some embodiments, the method 200 further includes:

[0097] If the terminal fails to access the cell based on the first ephemeris information, the terminal re-accesses the cell based on the second ephemeris information in System Information Block SIB19; if the terminal successfully accesses the second cell based on the second ephemeris information, the terminal determines the ephemeris information corresponding to the second cell as the target ephemeris information.

[0098] For example, when the terminal successfully accesses the second cell based on the second ephemeris information, the terminal determines the ephemeris information corresponding to the second cell as the target ephemeris information. Optionally, the terminal may also delete ephemeris information from the first ephemeris information other than the target ephemeris information and the ephemeris information of neighboring cells. Optionally, the terminal may also update the target ephemeris information and the ephemeris information of neighboring cells. For example, the terminal uses the ephemeris information obtained from SIB19 to update the target ephemeris information and the ephemeris information of neighboring cells pre-stored on the SIM. Optionally, the ephemeris information of neighboring cells may be the ephemeris information of neighboring satellites.

[0099] The following section provides a detailed explanation of the update scheme for the first ephemeris information, taking the storage of the first ephemeris information on the SIM as an example.

[0100] For example, the first ephemeris information is stored on the SIM card similar to pre-stored TN base station parameters. The first ephemeris information includes the ephemeris information corresponding to the area where the terminal is located. The terminal updates the first ephemeris information after searching for or accessing an NTN cell. Specifically, the terminal can update the first ephemeris information based on the following process:

[0101] Step 1:

[0102] The terminal obtains the first ephemeris information from the SIM. The first ephemeris information may include ephemeris information corresponding to the national region and ephemeris information corresponding to the city region. The first ephemeris information may be provided by the SIM's home location.

[0103] Step 2:

[0104] The terminal performs pre-compensation for frequency and time offsets based on the first ephemeris information, and then searches for cells. If the terminal successfully finds a cell, it proceeds to step 3; if the terminal fails to find a cell, it proceeds to step 4.

[0105] Step 3:

[0106] The terminal can delete all ephemeris information in the first ephemeris information except for the ephemeris information corresponding to the first cell accessed by the terminal and the ephemeris information of neighboring cells. Furthermore, the terminal can also update the ephemeris information corresponding to the first cell and the ephemeris information of neighboring cells. For example, the terminal uses second ephemeris information obtained from SIB19 to update the ephemeris information corresponding to the first cell and the ephemeris information of neighboring cells pre-stored on the SIM. Optionally, the ephemeris information corresponding to the first cell can be the ephemeris information of the serving cell or the ephemeris information of the serving satellite. The ephemeris information of neighboring cells can be the ephemeris information of neighboring satellites.

[0107] Step 4:

[0108] The terminal re-accesses the cell based on the second ephemeris information in SIB19. If the terminal successfully accesses the second cell based on the second ephemeris information, the terminal can delete all ephemeris information in the first ephemeris information except for the ephemeris information corresponding to the first cell accessed by the terminal and the ephemeris information of neighboring cells. Furthermore, the terminal can also update the ephemeris information corresponding to the first cell and the ephemeris information of neighboring cells. For example, the terminal uses the second ephemeris information obtained from SIB19 to update the ephemeris information corresponding to the first cell and the ephemeris information of neighboring cells pre-stored on the SIM. Optionally, the ephemeris information corresponding to the first cell can be the ephemeris information of the serving cell or the ephemeris information of the serving satellite. The ephemeris information of neighboring cells can be the ephemeris information of neighboring satellites.

[0109] For example, a mobile SIM card in a certain area pre-stores national ephemeris and local frequently passing ephemeris information. After activation and power-on, it uses the pre-stored ephemeris to estimate time and frequency offsets and search for NTN cells. If an NTN cell can be successfully found based on the SIM's pre-stored ephemeris information, the ephemeris information is retained, and the ephemeris information of the serving satellite and neighboring satellites is updated according to SIB19. If no cell is found based on the SIM's pre-stored ephemeris information, the terminal re-accesses the cell based on the second ephemeris information in SIB19, and after finding an NTN cell, updates the ephemeris information of the serving satellite and neighboring satellites according to SIB19.

[0110] In this embodiment, when the first ephemeris information is stored in the SIM, the terminal can achieve cell access and update the pre-stored ephemeris information.

[0111] In some embodiments, prior to S201, the method 200 further includes:

[0112] The terminal accesses the cell based on the second ephemeris information in the system information block SIB19; when the terminal successfully accesses the second cell based on the second ephemeris information, the terminal receives first information from the network-side device corresponding to the second cell, the first information being used to determine the first ephemeris information or the update information of the first ephemeris information.

[0113] For example, after receiving the first information from the network-side device corresponding to the second cell, the terminal can use the second ephemeris information obtained from SIB19 to determine the first ephemeris information and store it. For example, the first ephemeris information can be stored on a SIM or RAM. In this embodiment, by receiving the first information from the network-side device, the terminal can obtain and store the first ephemeris information.

[0114] In some embodiments, the first information carries at least one of the following:

[0115] An additional list of ephemeris information;

[0116] The list of modified ephemeris information;

[0117] A list of released ephemeris information.

[0118] For example, the added ephemeris information list includes one or more newly added ephemeris information entries in the ephemeris information stored in the terminal, the modified ephemeris information list includes one or more ephemeris information entries in the ephemeris information stored in the terminal when the terminal needs to modify them, and the released ephemeris information list is used by the terminal to delete one or more ephemeris information entries in the ephemeris information stored in the terminal.

[0119] For example, the data structures for the added ephemeris information list and the modified ephemeris information list can be:

[0120] AddModList::=SEQUENCE(SIZE(1..max))OF EphemerisInfo-ToAddMod.

[0121] For example, the data structure of the released ephemeris information list can be:

[0122] ReleaseList::=SEQUENCE(SIZE(1..max))OF EphemerisInfo-Identity.

[0123] In some embodiments, before the terminal receives the first information from the network-side device corresponding to the second cell, the 200 method further includes:

[0124] The terminal receives a first request message from the network-side device. The first request message is used to request the terminal to send a first indication message. The first indication message is used to indicate whether the terminal has the ability to store ephemeris information. The terminal sends the first indication message to the network-side device.

[0125] For example, the second request information may be a UE Capability Enquiry message.

[0126] For example, the first indication information may be a UE capability parameter in the UE capability information.

[0127] The UE capability information of the terminal may include multiple parameters, such as the parameters shown in Table 1 below.

[0128] Table 1

[0129]

[0130] As shown in Table 1, the UE capability information of the terminal may include the parameter accessStratumRelease, where "Per" indicates the level at which the relevant parameters are included. "UE" indicates that each UE notifies the relevant parameters; of course, it can also notify the relevant parameters for each frequency band, each frequency band combination, each feature set, or each component carrier, and this application does not limit this. M indicates whether the associated feature is mandatory. For example, accessStratumRelease may include parameters indicating whether the terminal supports FDD-TDDDIFF, or parameters indicating whether the terminal supports FR1-FR2 DIFF. In this application, the first indication information can be carried within accessStratumRelease.

[0131] In some embodiments, before the terminal receives the first information from the network-side device corresponding to the second cell, the method 200 further includes:

[0132] The terminal sends a second request message to the network-side device, the second request message being used to request the first message.

[0133] For example, the terminal can send the second request information during idle time. Alternatively, the terminal can send the second request information when it first connects (when the stored ephemeris information is blank) or when its capabilities change. For instance, in the scenario of the terminal first connecting (when the stored ephemeris information is blank) or when its capabilities change, the terminal can send the second request information during idle time to request the first information.

[0134] In some embodiments, the second request information includes at least one of the following:

[0135] Information about the area where the terminal is located;

[0136] The terminal's ability to store ephemeris information.

[0137] In this embodiment, when the terminal requests the first information, it carries information about the region where the terminal is located and the terminal's ability to store ephemeris information in the second request information. This allows the network-side device to select an appropriate amount of ephemeris information based on the region information and the terminal's ability to store ephemeris information, and to generate and send the first information based on the selected ephemeris information. Optionally, if the data volume of the first information exceeds the signaling load, the first information can be sent multiple times.

[0138] Figure 4 This is a schematic flowchart of a method 310 for initiating signaling transmission by a terminal, provided in an embodiment of this application.

[0139] like Figure 4 As shown, method 310 may include:

[0140] S311, the terminal receives a first request information from the network-side device. The first request information is used to request the terminal to send a first indication information. The first indication information is used to indicate whether the terminal has the ability to store ephemeris information.

[0141] For example, the first request information could be a UE Capability Enquiry message.

[0142] S312, the terminal sends the first indication information to the network-side device.

[0143] For example, the terminal adds the first indication information to the UE capability parameters and sends it to the network-side device.

[0144] S313, the terminal sends a second request message to the network-side device. The second request message is used to request first information, and the first information is used to determine the first ephemeris information or the update information of the first ephemeris information.

[0145] For example, in scenarios where the terminal is accessing the network for the first time (with blank ephemeris information) or where its capabilities have changed, the terminal can send the second request information during idle time to request the first information.

[0146] S314, the terminal receives the first information from the network-side device.

[0147] In this embodiment, after the terminal successfully accesses the cell, the first indication information indicates whether the terminal has the ability to store ephemeris information. Then, the terminal initiates signaling transmission so that the terminal can obtain the first information and determine and store the first ephemeris information based on the first information.

[0148] Figure 5 This is a schematic flowchart of a method 320 for initiating signaling transmission by a network-side device, as provided in an embodiment of this application.

[0149] like Figure 5 As shown, method 320 may include:

[0150] S321, the terminal receives a first request information from the network-side device. The first request information is used to request the terminal to send a first indication information. The first indication information is used to indicate whether the terminal has the ability to store ephemeris information.

[0151] For example, the first request information could be a UE Capability Enquiry message.

[0152] S322, the terminal sends the first indication information to the network-side device.

[0153] For example, the terminal adds the first indication information to the UE capability parameters and sends it to the network-side device.

[0154] S323, the terminal receives first information from the network-side device, the first information being used to determine the first ephemeris information or update information of the first ephemeris information.

[0155] For example, based on modifications to ephemeris information, such as satellite orbit changes or satellite recovery, the network-side device actively sends the first information to the terminal so that the terminal can update the first ephemeris information based on the first information.

[0156] In this embodiment, after the terminal successfully accesses the cell, the first indication information indicates whether the terminal has the ability to store ephemeris information. Then, the network-side device initiates signaling transmission so that the terminal can obtain the first information and then determine and store the first ephemeris information based on the first information.

[0157] In some embodiments, the terminal receives first information from the network-side device corresponding to the second cell, including:

[0158] The terminal receives the first information from the network-side device via a first data radio bearer (DRB); the first DRB is a first quality of service identifier or a DRB corresponding to a non-guaranteed bit rate (Non-GBR), and the first quality of service identifier is greater than a preset value.

[0159] Here, DRB stands for Data Radio Bearer, which handles data packets in the Radio Interface (Uu). The DRB is responsible for providing the same packet forwarding processing for (user) data packets. In the wireless network, the gNB maps the DRB to the Quality of Service (QoS) to provide different QoS for different services.

[0160] QoS management is a control mechanism for wireless networks to meet the quality requirements of different services. It is an end-to-end process that requires the cooperation of all network nodes along the route from initiator to responder to ensure service quality. Air interface QoS management features provide different end-to-end service qualities to meet the diverse needs of various services and users. In NR, the maximum number of DRBs a UE can establish has increased from a maximum of 8 in LTE to a maximum of 29, while a minimum capability of 16 DRBs is also specified. When a QoS flow passes through the Service Data Adaptation Protocol (SDAP) layer, the SDAP layer maps each QoS flow to the corresponding DRB based on the mapping relationship between the 5G QoS Identifier (5QI) value and the QoS Class Identifier (QCI) value. The QoS level of the DRB can be the QCI.

[0161] For example, the value of 5QI can correspond to a resource type, which can include Guaranteed Bit Rate (GBR) and Non-GBR types. See Tables 2 and 3 below:

[0162] Table 2

[0163]

[0164]

[0165] Table 3

[0166]

[0167] In this embodiment, the first information, as part of the downlink data, needs to have its QoS Flow mapped to the corresponding DRB. The downlink data can then be sent to the UE through the corresponding bearer. Optionally, the resource type of the first information can be Non-GBR to ensure the transmission quality of high-priority data. Optionally, the 5QI value of the first information can be preset, for example, the 5QI value of the first information can be 9. In this embodiment, the data size of the first information is not limited, which is equivalent to the data size of the first ephemeris information being unrestricted, making it suitable to store the first ephemeris information on the terminal RAM.

[0168] In some embodiments, before the terminal receives the first information from the network-side device via the first data radio bearer (DRB), the method 200 further includes:

[0169] The terminal receives a Radio Resource Control (RRC) reconfiguration message from the network-side device; the terminal establishes the first DRB based on the RRC reconfiguration message.

[0170] For example, the terminal receives an RRC reconfiguration message from the network-side device and decodes the RRC message to obtain parameters for establishing the first DRB, and then establishes the first DRB based on the obtained parameters.

[0171] Figure 6 This is a schematic flowchart of a method 330 for initiating signaling transmission by a terminal, provided in an embodiment of this application.

[0172] like Figure 6 As shown, method 330 may include:

[0173] S331, the terminal receives a first request information from the network-side device. The first request information is used to request the terminal to send a first indication information. The first indication information is used to indicate whether the terminal has the ability to store ephemeris information.

[0174] For example, the first request information could be a UE Capability Enquiry message.

[0175] S332, the terminal sends the first indication information to the network-side device.

[0176] For example, the terminal adds the first indication information to the UE capability parameters and sends it to the network-side device.

[0177] S333, the network-side device sends a bearer creation request to the core network, including the 5QI used in the first information.

[0178] S334, the network-side device receives a bearer creation response from the core network.

[0179] S335, the network-side device establishes the first DRB.

[0180] For example, if there is no 5QI bearer for the first information, the network-side device sends a bearer creation request to the core network and receives a bearer creation response from the core network. Thus, the network-side device establishes the first DRB based on the bearer creation response.

[0181] S336, the network-side device performs RB mapping.

[0182] For example, if a 5QI bearer exists for the first information, the network-side device maps the QoS flow of the first information to the 5QI bearer used for the first information. Optionally, the 5QI bearer used for the first information can be a cell QCI bearer or a Distributed Unit (DU) cell QCI bearer. A cell QCI bearer refers to a bearer configured according to QoS requirements at the cell level of the Radio Access Network (RAN). The DU is responsible for some processing functions of the RAN. A DU cell QCI bearer refers to a bearer configured according to QoS requirements at the DU level.

[0183] S337, the network-side device performs RRC message encoding.

[0184] S338, the network-side device sends an RRC reconfiguration message to the terminal.

[0185] S339, the terminal performs RRC message decoding.

[0186] S3310, the terminal establishes a first DRB.

[0187] S3311, the terminal sends an RRC reconfiguration completion message to the network-side device.

[0188] For example, after receiving the bearer creation response, the network-side device performs RRC message encoding based on the parameters used to create the first DRB in the bearer creation response to obtain an RRC reconfiguration message, and sends the RRC reconfiguration message to the terminal. After receiving the RRC reconfiguration message, the terminal decodes it to obtain the parameters used to create the first DRB, establishes the first DRB based on the obtained parameters, and sends an RRC reconfiguration completion message.

[0189] In this embodiment, after the terminal successfully accesses the cell, the first indication information indicates whether the terminal has the ability to store ephemeris information. Then, the network-side device initiates signaling transmission through the first DRB so that the terminal can obtain the first information and then determine and store the first ephemeris information based on the first information.

[0190] Figure 7 This is a schematic flowchart of a method 340 for initiating signaling transmission by a network-side device, as provided in an embodiment of this application.

[0191] like Figure 7 As shown, method 340 may include:

[0192] S341, the terminal performs RRC message encoding.

[0193] S342, the terminal sends a second request message to the network-side device. The second request message is used to request first information, and the first information is used to determine the first ephemeris information or the update information of the first ephemeris information.

[0194] For example, the terminal obtains the second request information through RRC message encoding and sends the second request information to the network-side device.

[0195] S343, the network-side device performs RRC message decoding.

[0196] For example, the network-side device decodes the received information using an RRC message to obtain the second request information.

[0197] S344, the network-side device sends a bearer creation request to the core network, including the 5QI used in the first information.

[0198] S345, the network-side device receives a bearer creation response from the core network.

[0199] S346, the network-side device establishes the first DRB.

[0200] For example, if there is no 5QI bearer for the first information, the network-side device sends a bearer creation request to the core network and receives a bearer creation response from the core network. Thus, the network-side device establishes the first DRB based on the bearer creation response.

[0201] S347, the network-side device performs RB mapping.

[0202] For example, if a 5QI bearer exists for the first information, the network-side device maps the QoS flow of the first information to the 5QI bearer used for the first information. Optionally, the 5QI bearer used for the first information can be a cell QCI bearer or a Distributed Unit (DU) cell QCI bearer. A cell QCI bearer refers to a bearer configured according to QoS requirements at the cell level of the Radio Access Network (RAN). The DU is responsible for some processing functions of the RAN. A DU cell QCI bearer refers to a bearer configured according to QoS requirements at the DU level.

[0203] S348, the network-side device performs RRC message encoding.

[0204] S349, the network-side device sends an RRC reconfiguration message to the terminal.

[0205] S3410, the terminal performs RRC message decoding.

[0206] S3411, the terminal establishes a first DRB.

[0207] S3412, the terminal sends an RRC reconfiguration completion message to the network-side device.

[0208] For example, after receiving the bearer creation response, the network-side device performs RRC message encoding based on the parameters used to create the first DRB in the bearer creation response to obtain an RRC reconfiguration message, and sends the RRC reconfiguration message to the terminal. After receiving the RRC reconfiguration message, the terminal decodes it to obtain the parameters used to create the first DRB, establishes the first DRB based on the obtained parameters, and sends an RRC reconfiguration completion message.

[0209] In this embodiment, after the terminal successfully accesses the cell, the terminal initiates signaling transmission through the second request message, and the network-side device initiates signaling transmission through the first DRB so that the terminal can obtain the first information and then determine and store the first ephemeris information based on the first information.

[0210] In some embodiments, the terminal receives first information from the network-side device corresponding to the second cell, including:

[0211] The terminal receives the first information from the network-side device via a data plane wireless bearer.

[0212] like Figure 8As shown, the data plane consists of core network data plane functions, radio access network data plane functions, and UE data plane functions, providing end-to-end connectivity. The data plane is responsible for data control, including data collection coordination, data collection configuration, and data transmission configuration. It also handles functions such as data acquisition, data transmission, data preprocessing, data privacy and security, data analysis, data storage, and data services.

[0213] like Figure 9 As shown, the network-side device includes a first data plane function, which can be responsible for data transmission configuration. Optionally, it can also be responsible for one or more of the following: data collection coordination, data reporting configuration, and data processing configuration. The terminal and the first data plane function may include: a first sublayer, a Packet Data Convergence Protocol (PDCP), Radio Link Control (RLC), Media Access Control (MAC), and a physical (PHY) layer.

[0214] The first sublayer of the terminal and the first sublayer of the first data plane function can communicate with each other. As a layer in the data plane protocol architecture, the first sublayer's main services and functions at the air interface (Uu interface) include one or more of the following:

[0215] Establishment, maintenance, and release of data plane connections between the UE and the radio access network;

[0216] The establishment, configuration, maintenance, and release of data plane radio bearers;

[0217] Data plane security management includes configuring whether to use encryption or integrity protection, key management, etc.

[0218] Configuration of data preprocessing and / or data preprocessing, including data association (such as association by user identifier, and / or time, and / or region), or data compression (such as compression or feature extraction).

[0219] Data plane service quality management;

[0220] Data plane resource allocation configuration, where resource allocation mainly refers to configuring the resources available for the data plane on the air interface;

[0221] The UE receives configuration information through data plane reports, and / or receives data through data plane reports;

[0222] The data configuration information received by the UE via the data plane, and / or the data transmission received by the UE via the data plane;

[0223] Transmit data plane messages between the first data plane function (core network data plane function) and the UE.

[0224] like Figure 10 As shown, the terminal's first sub-layer and the first sub-layer of the first data plane function can communicate with each other. The terminal and the second data plane function can also communicate, the second data plane function being responsible for network functions including at least one of positioning, sensing, computation, or AI models, for example, a network function carrying pre-stored ephemeris information.

[0225] A schematic diagram of a multi-data type business based on the data plane after its introduction. Figure 11 As shown. For data plane data transmission, a new protocol layer can be introduced, such as the Data Plane Adaptation Protocol (DPAP). The DPAP layer can be used to transmit data plane data, and it can also be used to generate data plane data, such as data plane signaling data. First information used to determine the first ephemeris information can be transmitted via a Data Plane Radio Bearer (DPRB). In this embodiment, the data size of the first information is not limited, meaning that the data size of the first ephemeris information is not limited, making it suitable to store the first ephemeris information in the terminal RAM.

[0226] It should be understood that the various implementations of obtaining the first information in this application can also be combined with each other, and this application does not specifically limit them. For example, the terminal can receive the first information from the network-side device through the first DRB and data plane wireless bearer.

[0227] In some embodiments, the method 200 further includes:

[0228] The terminal switches the method of determining the target ephemeris information from the first method to the second method; wherein, the second method is: the terminal determines the target ephemeris information based on the ephemeris information in the system information block SIB19.

[0229] In this embodiment, by flexibly switching the method for determining the target ephemeris information, the target ephemeris information can be obtained in a wider range of complex scenarios. In particular, for scenarios where the first determination method is unsuitable, switching to the second determination method can improve the accuracy of the target ephemeris information.

[0230] In some embodiments, before the terminal switches the method for determining the target ephemeris information from the first determination method to the second determination method, the method 200 further includes:

[0231] The terminal receives second indication information from the network-side device corresponding to the terminal's serving cell. The second indication information is used to instruct the terminal to switch the determination method of the target ephemeris information from the first determination method to the second determination method.

[0232] For example, after receiving the second indication information, the terminal switches the determination method for the target ephemeris information from the first determination method to the second determination method. Optionally, the second indication information is used in scenarios such as satellite orbit changes or satellite recovery. For example, in scenarios such as satellite orbit changes or satellite recovery, the network-side device can send the second indication information to the terminal.

[0233] In some embodiments, the second indication information is carried by at least one of the following:

[0234] SIB1;

[0235] Paging Radio Network Temporary Identifier (P-RNTI) scrambled downlink control information (DCI).

[0236] For example, a switching bit field is added to SIB1 to carry the second indication information. After receiving the second indication information, the terminal switches the determination method for the target ephemeris information from the first determination method to the second determination method.

[0237] For example, the reserved fields in the P-RNTI scrambled DCI can be used to carry the second indication information. Alternatively, any value reserved in the short message field of the P-RNTI scrambled DCI can be used to carry the second indication information. The reserved values ​​in the short message field are 5-8.

[0238] Of course, in other alternative embodiments, the second indication information may also be carried in other messages, and this application does not specifically limit this.

[0239] In some embodiments, the terminal switches the method for determining the target ephemeris information from the first determination method to the second determination method, including:

[0240] If the first condition is met, the terminal will switch the method of determining the target ephemeris information from the first method to the second method.

[0241] The first condition includes at least one of the following:

[0242] The terminal failed to connect to the cell based on the first ephemeris information;

[0243] After the terminal accesses the cell based on the first ephemeris information, the quality of the serving cell is less than or equal to a preset threshold.

[0244] For example, if accessing the cell based on the stored first ephemeris information is difficult or the bit error rate increases after accessing the cell, the method for determining the target ephemeris information can be dynamically switched from the first method to the second method. For instance, if the increase in the bit error rate after accessing the cell is greater than or equal to a preset threshold, the method for determining the target ephemeris information can be dynamically switched from the first method to the second method.

[0245] Figure 12 This is a schematic flowchart of a wireless communication method 400 according to an embodiment of this application.

[0246] like Figure 12 As shown, the wireless communication method 400 may include:

[0247] S401, the network-side device sends first information to the terminal, the first information being used to determine the first ephemeris information or the update information of the first ephemeris information stored on the terminal.

[0248] In some embodiments, the first information carries at least one of the following:

[0249] An additional list of ephemeris information;

[0250] The list of modified ephemeris information;

[0251] A list of released ephemeris information.

[0252] In some embodiments, prior to S401, the method 400 further includes:

[0253] The network-side device sends a first request message to the terminal, the first request message being used to request the terminal to send a first indication message, the first indication message being used to indicate whether the terminal has the ability to store ephemeris information;

[0254] The network-side device receives the first indication information from the terminal.

[0255] In some embodiments, prior to S401, the method 400 further includes:

[0256] The network-side device receives a second request information from the terminal, the second request information being used to request the first information.

[0257] In some embodiments, the second request information includes at least one of the following:

[0258] Information about the area where the terminal is located;

[0259] The terminal's ability to store ephemeris information.

[0260] In some embodiments, S401 includes:

[0261] The network-side device sends the first information to the terminal through the first data radio bearer (DRB); the first DRB is a first quality of service identifier or a DRB corresponding to a non-guaranteed bit rate (Non-GBR), and the first quality of service identifier is greater than a preset value.

[0262] In some embodiments, before the network-side device sends the first information to the terminal via the first data radio bearer (DRB), the method 400 further includes:

[0263] The network-side device sends a Radio Resource Control (RRC) reconfiguration message to the terminal.

[0264] The RRC reconfiguration message is used by the terminal to establish the first DRB.

[0265] In some embodiments, S401 includes:

[0266] The network-side device transmits the first information to the terminal via a data plane wireless bearer.

[0267] In some embodiments, the method 400 further includes:

[0268] The network-side device sends a second instruction message to the terminal, the second instruction message being used to instruct the terminal to switch the method of determining the target ephemeris information used by the terminal from the first determination method to the second determination method;

[0269] The first determination method is: the terminal determines the target ephemeris information based on the first ephemeris information, and the second determination method is: the terminal determines the target ephemeris information based on the ephemeris information in system information block SIB19.

[0270] In some embodiments, the second indication information is carried by at least one of the following:

[0271] System message block SIB1;

[0272] Paging - Temporary Radio Network Identifier (P-RNTI) scrambled downlink control information (DCI).

[0273] It should be understood that the wireless communication method 400 includes the relevant process of the network-side device sending the first information to the terminal. The relevant content involved is similar to that of method 200 and method 310 to method 340. Therefore, the specific content can be referred to the relevant descriptions in method 200 and method 310 to method 340. To avoid repetition, it will not be repeated here.

[0274] The wireless communication method provided in this application can be executed by a wireless communication device. This application uses an example of a wireless communication device executing the wireless communication method to illustrate the wireless communication device provided in this application.

[0275] This application provides a wireless communication device. As an example, the wireless communication device may be a communication device or a component within a communication device, such as a chip. The communication device may be a terminal, a network-side device, or a server, etc. Exemplarily, the terminal may include, but is not limited to, the type of terminal 11 listed above, and the network-side device may include, but is not limited to, the type of network-side device 12 listed above. This application does not impose specific limitations.

[0276] The wireless communication device includes a receiving module, a transmitting module, and a processing module. The receiving module and the transmitting module can be collectively referred to as the communication module. The receiving module, transmitting module, and processing module can be implemented in software or hardware. When implemented in hardware, the processing module can be implemented by a processor. For example, the processor can include general-purpose processors, special-purpose processors, such as a Central Processing Unit (CPU), microprocessor, Digital Signal Processor (DSP), Artificial Intelligence (AI) processor, Graphics Processing Unit (GPU), Application Specific Integrated Circuit (ASIC), Network Processor (NP), Field Programmable Gate Array (FPGA), or other programmable logic devices, gate circuits, transistors, discrete hardware components, etc. The receiving module and the transmitting module can be implemented by a communication interface, which can include one or more of the following: transceiver, pins, circuits, bus, radio frequency unit, etc.

[0277] For details, see Figure 13 When the wireless communication device is a terminal or a component in a terminal, the wireless communication device 500 includes a processing module 502 for determining the target ephemeris information used by the terminal using a first determination method.

[0278] The first determination method is: the terminal determines the target ephemeris information based on the first ephemeris information stored in the terminal.

[0279] In some embodiments, the first ephemeris information includes at least one of the following:

[0280] Ephemeris information stored in the SIM card;

[0281] Ephemeris information stored in Random Access Memory (RAM).

[0282] In some embodiments, the first ephemeris information includes ephemeris information corresponding to the region where the terminal is located.

[0283] In some embodiments, the processing module 502 is specifically used for:

[0284] Cell access is performed based on the first ephemeris information;

[0285] When the terminal successfully accesses the first cell based on the first ephemeris information, the ephemeris information corresponding to the first cell is determined as the target ephemeris information.

[0286] In some embodiments, the processing module 502 is further configured to:

[0287] If the terminal fails to access the cell based on the first ephemeris information, it re-accesses the cell based on the second ephemeris information in system information block SIB19.

[0288] If the terminal successfully accesses the second cell based on the second ephemeris information, the ephemeris information corresponding to the second cell is determined as the target ephemeris information.

[0289] In some embodiments, the device 500 further includes a communication module, and before the processing module 502 determines the target ephemeris information used by the terminal using a first determination method, the communication module is configured to:

[0290] Cell access is performed based on the second ephemeris information in System Information Block SIB19;

[0291] When the terminal successfully accesses the second cell based on the second ephemeris information, it receives first information from the network-side device corresponding to the second cell. The first information is used to determine the first ephemeris information or the update information of the first ephemeris information.

[0292] In some embodiments, the first information carries at least one of the following:

[0293] An additional list of ephemeris information;

[0294] The list of modified ephemeris information;

[0295] A list of released ephemeris information.

[0296] In some embodiments, before the communication module receives the first information from the network-side device corresponding to the second cell, it is further configured to:

[0297] The network-side device receives a first request message, which is used to request the terminal to send a first indication message, which is used to indicate whether the terminal has the ability to store ephemeris information.

[0298] The first indication information is sent to the network-side device.

[0299] In some embodiments, before the communication module receives the first information from the network-side device corresponding to the second cell, it is further configured to:

[0300] A second request message is sent to the network-side device, the second request message being used to request the first message.

[0301] In some embodiments, the second request information includes at least one of the following:

[0302] Information about the area where the terminal is located;

[0303] The terminal's ability to store ephemeris information.

[0304] In some embodiments, the communication module is specifically used for:

[0305] The first information is received from the network-side device via the first data radio bearer DRB; the first DRB is a first quality of service identifier or a DRB corresponding to a non-guaranteed bit rate (Non-GBR), and the first quality of service identifier is greater than a preset value.

[0306] In some embodiments, before the communication module receives the first information from the network-side device via the first data radio bearer (DRB), it is further configured to:

[0307] The processing module 501 is further configured to: receive a Radio Resource Control (RRC) reconfiguration message from the network-side device;

[0308] Based on the RRC reconfiguration message, the first DRB is established.

[0309] In some embodiments, the communication module is specifically used for:

[0310] The first information is received from the network-side device via wireless data plane transmission.

[0311] In some embodiments, the processing module 501 is further configured to:

[0312] The method for determining the target ephemeris information is switched from the first method to the second method.

[0313] The second determination method is: the terminal determines the target ephemeris information based on the ephemeris information in the system information block SIB19.

[0314] In some embodiments, the apparatus further includes a receiving module, wherein before the processing module 501 switches the determination method of the target ephemeris information from the first determination method to the second determination method, the receiving module is configured to:

[0315] The terminal receives a second indication information from the network-side device corresponding to the serving cell of the terminal. The second indication information is used to instruct the terminal to switch the determination method of the target ephemeris information from the first determination method to the second determination method.

[0316] In some embodiments, the second indication information is carried by at least one of the following:

[0317] System message block SIB1;

[0318] Paging - Temporary Radio Network Identifier (P-RNTI) scrambled downlink control information (DCI).

[0319] In some embodiments, the processing module 501 is specifically used for:

[0320] If the first condition is met, the method for determining the target ephemeris information is switched from the first method to the second method.

[0321] The first condition includes at least one of the following:

[0322] The terminal failed to connect to the cell based on the first ephemeris information;

[0323] After the terminal accesses the cell based on the first ephemeris information, the quality of the serving cell is less than or equal to a preset threshold.

[0324] See Figure 14 When the wireless communication device is a network-side device or a component of a network-side device, the wireless communication device 600 includes a communication module 601 for sending first information to a terminal, the first information being used to determine first ephemeris information or update information of the first ephemeris information stored on the terminal.

[0325] In some embodiments, the first information carries at least one of the following:

[0326] An additional list of ephemeris information;

[0327] The list of modified ephemeris information;

[0328] A list of released ephemeris information.

[0329] In some embodiments, before the communication module 601 sends the first information to the terminal, it is further configured to:

[0330] Send a first request message to the terminal, the first request message being used to request the terminal to send a first indication message, the first indication message being used to indicate whether the terminal has the ability to store ephemeris information;

[0331] Receive the first instruction information from the terminal.

[0332] In some embodiments, before the communication module 601 sends the first information to the terminal, it is further configured to:

[0333] The terminal receives a second request message, which is used to request the first message.

[0334] In some embodiments, the second request information includes at least one of the following:

[0335] Information about the area where the terminal is located;

[0336] The terminal's ability to store ephemeris information.

[0337] In some embodiments, the communication module 601 is specifically used for:

[0338] The first information is sent to the terminal via the first data radio bearer DRB; the first DRB is a first quality of service identifier or a DRB corresponding to a non-guaranteed bit rate (Non-GBR), and the first quality of service identifier is greater than a preset value.

[0339] In some embodiments, before the communication module 601 sends the first information to the terminal via the first data radio bearer (DRB), it is further configured to:

[0340] Send a Radio Resource Control (RRC) reconfiguration message to the terminal;

[0341] The RRC reconfiguration message is used by the terminal to establish the first DRB.

[0342] In some embodiments, the communication module 601 is specifically used for:

[0343] The first information is sent to the terminal via a data plane wireless bearer.

[0344] In some embodiments, the communication module 601 is further configured to:

[0345] Send a second instruction message to the terminal, the second instruction message being used to instruct the terminal to switch the method of determining the target ephemeris information used by the terminal from the first determination method to the second determination method;

[0346] The first determination method is: the terminal determines the target ephemeris information based on the first ephemeris information, and the second determination method is: the terminal determines the target ephemeris information based on the ephemeris information in system information block SIB19.

[0347] In some embodiments, the second indication information is carried by at least one of the following:

[0348] System message block SIB1;

[0349] Paging - Temporary Radio Network Identifier (P-RNTI) scrambled downlink control information (DCI).

[0350] The apparatus provided in this application embodiment can achieve... Figures 3 to 12 The various processes implemented in the method embodiments achieve the same technical effect, and will not be described again here to avoid repetition.

[0351] like Figure 15 As shown in the illustration, this application also provides a communication device 700, including a processor 701 and a memory 702. The memory 702 stores programs or instructions that can run on the processor 701. For example, when the communication device 700 is a terminal, the program or instructions executed by the processor 701 implement the various steps of the above-described wireless communication method embodiments and achieve the same technical effect. When the communication device 700 is a network-side device, the program or instructions executed by the processor 701 implement the various steps of the above-described wireless communication method embodiments and achieve the same technical effect. To avoid repetition, further details are omitted here.

[0352] This application embodiment 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 programs or instructions to implement, for example... Figures 3 to 12 The steps in the method embodiment shown are illustrated. This terminal embodiment corresponds to the above-described terminal-side method embodiment. All implementation processes and methods of the above-described method embodiments can be applied to this terminal embodiment and achieve the same technical effect. The terminal can be... Figure 13 The wireless communication device shown. Specifically, Figure 16 A schematic diagram of the hardware structure of a terminal to implement an embodiment of this application.

[0353] The terminal 800 includes, but is not limited to, at least some of the following components: radio frequency unit 801, network module 802, audio output unit 803, input unit 804, sensor 805, display unit 806, user input unit 807, interface unit 808, memory 809, and processor 810.

[0354] Those skilled in the art will understand that the terminal 800 may also include a power supply (such as a battery) for supplying power to various components. The power supply may be logically connected to the processor 810 through a power management system, thereby enabling functions such as managing charging, discharging, and power consumption through the power management system. Figure 16 The terminal structure shown does not constitute a limitation on the terminal. The terminal may include more or fewer components than shown, or combine certain components, or have different component arrangements, which will not be elaborated here.

[0355] It should be understood that, in this embodiment, the input unit 804 may include a graphics processor 8041 and a microphone 8042. The graphics processor 8041 processes image data of still images or videos obtained by an image capture device (such as a camera) in video capture mode or image capture mode. The display unit 806 may include a display panel 8061, which may be configured in the form of a liquid crystal display, an organic light-emitting diode, or the like. The user input unit 807 includes at least one of a touch panel 8071 and other input devices 8072. The touch panel 8071 is also called a touch screen. The touch panel 8071 may include two parts: a touch detection device and a touch controller. Other input devices 8072 may include, but are not limited to, physical keyboards, function keys (such as volume control buttons, power buttons, etc.), trackballs, mice, and joysticks, which will not be described in detail here.

[0356] In this embodiment, after receiving downlink data from the network-side device, the radio frequency unit 801 can transmit it to the processor 810 for processing; in addition, the radio frequency unit 801 can send uplink data to the network-side device. Typically, the radio frequency unit 801 includes, but is not limited to, antennas, amplifiers, transceivers, couplers, low-noise amplifiers, duplexers, etc.

[0357] The memory 809 can be used to store software programs or instructions, as well as various data. The memory 809 may primarily include a first storage area for storing programs or instructions and a second storage area for storing data. The first storage area may store the operating system, application programs or instructions required for at least one function (such as sound playback, image playback, etc.). Furthermore, the memory 809 may include volatile memory or non-volatile memory. The non-volatile memory may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. Volatile memory can be random access memory (RAM), static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDRSDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct memory bus RAM (DRRAM). The memory 809 in the embodiments of this application includes, but is not limited to, these and any other suitable types of memory.

[0358] Processor 810 may include one or more processing units; optionally, processor 810 integrates an application processor and a modem processor, wherein the application processor mainly handles operations involving the operating system, user interface, and applications, and the modem processor mainly handles wireless communication signals, such as a baseband processor. It is understood that the aforementioned modem processor may also not be integrated into processor 810.

[0359] The processor 810 is used to determine the target ephemeris information used by the terminal using a first determination method.

[0360] The first determination method is: the terminal determines the target ephemeris information based on the first ephemeris information stored in the terminal.

[0361] In this embodiment of the application, the target ephemeris information can be determined directly based on the first ephemeris information stored in the terminal, avoiding the need to determine the target ephemeris information based on the ephemeris information obtained by the terminal from SIB19, thereby reducing the transmission overhead and transmission latency of the ephemeris information.

[0362] It is understood that the implementation process of each implementation method mentioned in this embodiment can refer to the relevant description of the above wireless communication method embodiment and achieve the same or corresponding technical effects. To avoid repetition, it will not be described again here.

[0363] This application embodiment 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 programs or instructions to implement, for example... Figures 4 to 12 The steps of the method embodiment shown are illustrated. This network-side device embodiment corresponds to the above-described network-side device method embodiment. All implementation processes and methods of the above-described method embodiments can be applied to this network-side device embodiment and can achieve the same technical effect.

[0364] Specifically, embodiments of this application also provide a network-side device, which may be... Figure 14 The wireless communication device shown. (As shown) Figure 17 As shown, the network-side device 900 includes: an antenna 91, a radio frequency (RF) device 92, a baseband device 93, a processor 94, and a memory 95. The antenna 91 is connected to the RF device 92. In the uplink direction, the RF device 92 receives information through the antenna 91 and transmits the received information to the baseband device 93 for processing. In the downlink direction, the baseband device 93 processes the information to be transmitted and sends it to the RF device 92. The RF device 92 processes the received information and transmits it through the antenna 91.

[0365] The method executed by the network-side device in the above embodiments can be implemented in the baseband device 93, which includes a baseband processor.

[0366] Baseband device 93 may include, for example, at least one baseband board on which multiple chips are disposed, one of which is, for example, a baseband processor. Figure 17 As shown, the baseband device 93 is connected to the memory 95 via a bus interface to call the program in the memory 95 and execute the network-side device operation shown in the above method embodiment.

[0367] The network-side device may also include a network interface 96, such as a Common Public Radio Interface (CPRI).

[0368] Specifically, the network-side device 900 in this application embodiment further includes: instructions or programs stored in memory 95 and executable on processor 94, wherein processor 94 calls the instructions or programs in memory 95 to execute. Figure 14 The methods executed by each module shown achieve the same technical effect, and to avoid repetition, they will not be described in detail here.

[0369] This application also provides a readable storage medium storing a program or instructions. When the program or instructions are executed by a processor, they implement the various processes of the above-described wireless communication method embodiments and achieve the same technical effects. To avoid repetition, they will not be described again here.

[0370] The processor mentioned above is the processor in the terminal described in the above embodiments. The readable storage medium includes computer-readable storage media, such as computer read-only memory (ROM), random access memory (RAM), magnetic disk, or optical disk. In some examples, the readable storage medium may be a non-transient readable storage medium.

[0371] This application embodiment also provides a chip, which includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is used to run programs or instructions to implement the various processes of the above-described wireless communication method embodiments and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0372] It should be understood that the chip mentioned in the embodiments of this application may also be referred to as a system-on-a-chip, system chip, chip system, or system-on-a-chip, etc.

[0373] This application also provides a computer program / program product, which is stored in a storage medium and executed by at least one processor to implement the various processes of the above-described wireless communication method embodiments, and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0374] This application also provides a communication system, including: a terminal and a network-side device. The terminal can be used to perform the steps performed by the terminal in the wireless communication method described above, and the network-side device can be used to perform the steps performed by the network-side device in the wireless communication method described above.

[0375] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0376] From the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of computer software products plus necessary general-purpose hardware platforms, and of course, they can also be implemented by hardware. The computer software product is stored in a storage medium (such as ROM, RAM, magnetic disk, optical disk, etc.) and includes several instructions to cause the terminal or network-side device to execute the methods described in the various embodiments of this application.

[0377] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other implementations under the guidance of this application without departing from the spirit and scope of the claims. All of these implementations are within the protection scope of this application.

Claims

1. A wireless communication method, characterized in that, include: The terminal uses a first determination method to determine the target ephemeris information used by the terminal; The first determination method is: the terminal determines the target ephemeris information based on the first ephemeris information stored in the terminal.

2. The method according to claim 1, characterized in that, The first ephemeris information includes at least one of the following: Ephemeris information stored in the SIM card; Ephemeris information stored in Random Access Memory (RAM).

3. The method according to claim 1 or 2, characterized in that, The first ephemeris information includes the ephemeris information corresponding to the region where the terminal is located.

4. The method according to any one of claims 1 to 3, characterized in that, The terminal uses a first determination method to determine the target ephemeris information used by the terminal, including: The terminal accesses the cell based on the first ephemeris information; When the terminal successfully accesses the first cell based on the first ephemeris information, the terminal determines the ephemeris information corresponding to the first cell as the target ephemeris information.

5. The method according to claim 4, characterized in that, The method further includes: If the terminal fails to access the cell based on the first ephemeris information, the terminal re-accesses the cell based on the second ephemeris information in system information block SIB19. If the terminal successfully accesses the second cell based on the second ephemeris information, the terminal determines the ephemeris information corresponding to the second cell as the target ephemeris information.

6. The method according to any one of claims 1 to 5, characterized in that, Before the terminal uses the first determining method to determine the target ephemeris information used by the terminal, the method further includes: The terminal accesses the cell based on the second ephemeris information in system information block SIB19. When the terminal successfully accesses the second cell based on the second ephemeris information, the terminal receives first information from the network-side device corresponding to the second cell. The first information is used to determine the first ephemeris information or the update information of the first ephemeris information.

7. The method according to claim 6, characterized in that, The first information carries at least one of the following: An additional list of ephemeris information; The list of modified ephemeris information; A list of released ephemeris information.

8. The method according to claim 6 or 7, characterized in that, Before the terminal receives the first information from the network-side device corresponding to the second cell, the method further includes: The terminal receives a first request information from the network-side device. The first request information is used to request the terminal to send a first indication information. The first indication information is used to indicate whether the terminal has the ability to store ephemeris information. The terminal sends the first instruction information to the network-side device.

9. The method according to any one of claims 6 to 8, characterized in that, Before the terminal receives the first information from the network-side device corresponding to the second cell, the method further includes: The terminal sends a second request message to the network-side device, the second request message being used to request the first message.

10. The method according to claim 9, characterized in that, The second request information includes at least one of the following: Information about the area where the terminal is located; The terminal's ability to store ephemeris information.

11. The method according to any one of claims 6 to 10, characterized in that, The terminal receives first information from the network-side device corresponding to the second cell, including: The terminal receives the first information from the network-side device via the first data wireless bearer DRB; the first DRB is a first quality of service identifier or a DRB corresponding to a non-guaranteed bit rate (Non-GBR), and the first quality of service identifier is greater than a preset value.

12. The method according to claim 11, characterized in that, Before the terminal receives the first information from the network-side device via the first data radio bearer (DRB), the method further includes: The terminal receives a Radio Resource Control (RRC) reconfiguration message from the network-side device. The terminal establishes the first DRB based on the RRC reconfiguration message.

13. The method according to any one of claims 6 to 10, characterized in that, The terminal receives first information from the network-side device corresponding to the second cell, including: The terminal receives the first information from the network-side device via a data plane wireless bearer.

14. The method according to any one of claims 1 to 13, characterized in that, The method further includes: The terminal switches the method for determining the target ephemeris information from the first determination method to the second determination method. The second determination method is: the terminal determines the target ephemeris information based on the ephemeris information in the system information block SIB19.

15. The method according to claim 14, characterized in that, Before the terminal switches the method for determining the target ephemeris information from the first determination method to the second determination method, the method further includes: The terminal receives second indication information from the network-side device corresponding to the terminal's serving cell. The second indication information is used to instruct the terminal to switch the determination method of the target ephemeris information from the first determination method to the second determination method.

16. The method according to claim 15, characterized in that, The second indication information is carried by at least one of the following: System message block SIB1; Paging - Temporary Radio Network Identifier (P-RNTI) scrambled downlink control information (DCI).

17. The method according to claim 14, characterized in that, The terminal switches the method for determining the target ephemeris information from the first determination method to the second determination method, including: If the first condition is met, the terminal will switch the method of determining the target ephemeris information from the first method to the second method. The first condition includes at least one of the following: The terminal failed to connect to the cell based on the first ephemeris information; After the terminal accesses the cell based on the first ephemeris information, the quality of the serving cell is less than or equal to a preset threshold.

18. A wireless communication method, characterized in that, include: The network-side device sends first information to the terminal, the first information being used to determine the first ephemeris information or the update information of the first ephemeris information stored on the terminal.

19. The method according to claim 18, characterized in that, The first information carries at least one of the following: An additional list of ephemeris information; The list of modified ephemeris information; A list of released ephemeris information.

20. The method according to claim 18 or 19, characterized in that, Before the network-side device sends the first information to the terminal, the method further includes: The network-side device sends a first request message to the terminal, the first request message being used to request the terminal to send a first indication message, the first indication message being used to indicate whether the terminal has the ability to store ephemeris information; The network-side device receives the first indication information from the terminal.

21. The method according to any one of claims 18 to 20, characterized in that, Before the network-side device sends the first information to the terminal, the method further includes: The network-side device receives a second request information from the terminal, the second request information being used to request the first information.

22. The method according to claim 21, characterized in that, The second request information includes at least one of the following: Information about the area where the terminal is located; The terminal's ability to store ephemeris information.

23. The method according to any one of claims 18 to 22, characterized in that, The network-side device sends first information to the terminal, including: The network-side device sends the first information to the terminal through the first data radio bearer (DRB); the first DRB is a first quality of service identifier or a DRB corresponding to a non-guaranteed bit rate (Non-GBR), and the first quality of service identifier is greater than a preset value.

24. The method according to claim 23, characterized in that, Before the network-side device sends the first information to the terminal via the first data radio bearer (DRB), the method further includes: The network-side device sends a Radio Resource Control (RRC) reconfiguration message to the terminal. The RRC reconfiguration message is used by the terminal to establish the first DRB.

25. The method according to any one of claims 18 to 22, characterized in that, The network-side device sends first information to the terminal, including: The network-side device transmits the first information to the terminal via a data plane wireless bearer.

26. The method according to any one of claims 18 to 25, characterized in that, The method further includes: The network-side device sends a second instruction message to the terminal, the second instruction message being used to instruct the terminal to switch the method of determining the target ephemeris information used by the terminal from the first determination method to the second determination method; The first determination method is the method by which the terminal determines the target ephemeris information based on the first ephemeris information, and the second determination method is the method by which the terminal determines the target ephemeris information based on the ephemeris information in the system information block SIB19.

27. The method according to claim 26, characterized in that, The second indication information is carried by at least one of the following: System message block SIB1; Paging - Temporary Radio Network Identifier (P-RNTI) scrambled downlink control information (DCI).

28. A wireless communication device, characterized in that, include: The processing module is used to determine the target ephemeris information used by the terminal using a first determination method; The first determination method is a method in which the terminal determines the target ephemeris information based on the first ephemeris information stored in the terminal.

29. The apparatus according to claim 28, characterized in that, The processing module is specifically used for: Cell access is performed based on the first ephemeris information; When the terminal successfully accesses the first cell based on the first ephemeris information, the ephemeris information corresponding to the first cell is determined as the target ephemeris information.

30. The apparatus according to claim 28 or 29, characterized in that, The wireless communication device further includes a communication module. Before the processing module determines the target ephemeris information used by the terminal using a first determination method, the communication module is configured to: Cell access is performed based on the second ephemeris information in System Information Block SIB19; When the terminal successfully accesses the second cell based on the second ephemeris information, it receives first information from the network-side device corresponding to the second cell. The first information is used to determine the first ephemeris information or the update information of the first ephemeris information.

31. A wireless communication device, characterized in that, include: A communication module is used to send first information to a terminal, the first information being used to determine first ephemeris information or update information of the first ephemeris information stored on the terminal.

32. The apparatus according to claim 31, characterized in that, The communication module is also used for: Send a first request message to the terminal, the first request message being used to request the terminal to send a first indication message, the first indication message being used to indicate whether the terminal has the ability to store ephemeris information; Receive the first instruction information from the terminal.

33. The apparatus according to claim 31 or 32, characterized in that, The communication module is also used for: The terminal receives a second request message, which is used to request the first message.

34. A terminal, characterized in that, It includes a processor and a memory, the memory storing a program or instructions that can run on the processor, the program or instructions being executed by the processor to implement the steps of the wireless communication method according to any one of claims 1 to 17.

35. A network-side device, characterized in that, It includes a processor and a memory, the memory storing a program or instructions that can run on the processor, the program or instructions being executed by the processor to implement the steps of the wireless communication method according to any one of claims 18 to 25.

36. A readable storage medium, characterized in that, The readable storage medium stores a program or instructions that, when executed by a processor, implement the wireless communication method according to any one of claims 1 to 17, or implement the steps of the wireless communication method according to any one of claims 18 to 25.

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