Cell configuration information updating method and communication system based on star-ground fusion network

Abstract

The application discloses a cell configuration information updating method and communication system based on a star-ground fusion network. The method comprises the following steps: receiving a cell switching request of a terminal device, wherein the cell switching request carries a ground network cell where the terminal device is located, a moving state, and a set of accessible cell configuration information corresponding to the terminal category; determining a plurality of first non-ground network cells adjacent to the ground network cell according to the moving state, selecting at least one second non-ground network cell with optimal performance according to network performance measurement information of each first non-ground network cell, determining non-ground network cell configuration information of each second non-ground network cell from a star-ground fusion network cell configuration information set, and updating the set of accessible cell configuration information based on the non-ground network cell configuration information. The application solves the technical problem that when a terminal accesses the star-ground fusion network, the satellite needs to consume a large amount of channel resources to transmit cell configuration information to the terminal, resulting in poor communication quality of the terminal in the star-ground fusion network.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of satellite mobile communication, in particular to a cell configuration information updating method based on a satellite-ground integrated network and a communication system. BACKGROUND

[0002] At present, the 3GPP protocol introduces NR NTN (New Radio Non-Terrestrial Network) from Release 17 to support satellite access scenarios in formal standardization, wherein the NR NTN supports two frequency bands of L band (n255) and S band (n256), wherein the frequency band range of the L band is 1626.5-1660.5MHz (uplink) and 1525-1559MHz (downlink), and the frequency band range of the S band is 1980-2010MHz (uplink) and 2170-2200MHz (downlink).

[0003] Taking the NTN system in the S band of 2GHz as an example, based on the orbit height (about 36000km) of the GEO (Geostationary Earth Orbit) satellite, various factors are comprehensively considered to affect the signal, including free space loss, atmospheric loss, fading and human body shielding, etc. These factors jointly cause the cumulative loss of the signal to be very high (such as up to 196dB) when reaching the ground receiver. For high-orbit satellites in orbit, the load capacity is fixed, especially for systems with limited downlink power, the link budget of the downlink is very tight, which means that the signal power transmitted by the satellite to the ground is limited, and optimization needs to be performed under limited resources to ensure communication quality. However, even if the granularity of the BWP (Bandwidth Part) is configured to be as low as 2RB or other related optimization measures are adopted, the insufficient link budget of the 3.6MHz bandwidth SSB (System synchronization block) will be the first obstacle to terminal access to the satellite-ground integrated network.

[0004] At present, no effective solution has been proposed for the above problems. SUMMARY

[0005] The embodiments of the present application provide a cell configuration information updating method based on a satellite-ground integrated network and a communication system, so as to at least solve the technical problem that when a terminal accesses the satellite-ground integrated network, the satellite needs to consume a large amount of channel resources to transmit cell configuration information to the terminal, resulting in poor quality of communication of the terminal in the satellite-ground integrated network.

[0006] According to an aspect of the embodiments of the present application, a method for updating cell configuration information based on a satellite-ground integrated network is provided, comprising: receiving a cell handover request initiated by a terminal device, the cell handover request carrying at least a ground network cell currently located by the terminal device, a movement state, and a set of accessible cell configuration information corresponding to a terminal category of the terminal device, wherein the ground network cell is any one of the cells at the edge of a ground network coverage range, and the set of accessible cell configuration information at least includes cell configuration information of at least one network cell accessible to the terminal device in a satellite-ground integrated network coverage range; determining a plurality of first non-ground network cells adjacent to the ground network cell according to the movement state, and obtaining network performance measurement information of each first non-ground network cell; selecting at least one second non-ground network cell with network performance measurement information not lower than a preset performance threshold from the plurality of first non-ground network cells, and determining non-ground network cell configuration information of each second non-ground network cell from a preset set of satellite-ground integrated network cell configuration information, wherein the set of satellite-ground integrated network cell configuration information includes cell configuration information of a plurality of cells in the satellite-ground integrated network coverage range, and the types of the cells include ground network cells or non-ground network cells; and updating the set of accessible cell configuration information according to the non-ground network cell configuration information of each second non-ground network cell.

[0007] Optionally, before receiving the cell handover request initiated by the terminal device, the method further comprises: obtaining a network access capability and a terminal category reported by the terminal device at the ground network cell, wherein the network access capability includes at least one of a ground network access capability and a non-ground network access capability; and in the case where the access capability includes the non-ground network access capability, determining the set of accessible cell configuration information corresponding to the terminal category from the set of satellite-ground integrated network cell configuration information, wherein the terminal category is determined according to at least a terminal grade and a terminal baseband capability, the set of accessible cell configuration information includes cell configuration information of the ground network cell and / or cell configuration information of the non-ground network cell, and the cell configuration information includes at least one of an orthogonal frequency division multiplexing symbol boundary, a cell identifier, a cell range, configuration information of a demodulation reference signal, a subcarrier spacing corresponding to a system information block 1 (SIB1), a configuration parameter of a physical downlink shared channel of the SIB1, a time domain position of a demodulation reference signal of a physical downlink shared channel carrying the SIB1, index information of a synchronization signal block, coarse frequency synchronization information, half-frame indication information, and a system frame number.

[0008] Optionally, the terminal category includes: a first category of terminal for representing that the terminal level is not lower than a preset level threshold and the terminal baseband capability is not lower than a preset capability threshold; a second category of terminal for representing that the terminal level is not lower than a preset level threshold but the terminal baseband capability is lower than a preset capability threshold; and a third category of terminal for representing that the terminal level is lower than a preset level threshold and the terminal baseband capability is lower than a preset capability threshold.

[0009] Optionally, the terminal level includes at least one of: a service priority determined when signing up with an operator, a security performance level, and a terminal device type; and the terminal baseband capability includes at least one of: a storage space, a processor processing capability, and a high-speed mobile processing capability.

[0010] Optionally, determining the accessible cell configuration information set corresponding to the terminal category from the satellite-ground integrated network cell configuration information set includes: in a case where the terminal category is the first category of terminal, taking the satellite-ground integrated network cell configuration information set as the accessible cell configuration information set of the terminal device; in a case where the terminal category is the second category of terminal, taking cell configuration information of at least one cell whose network performance is lower than a preset performance threshold in a plurality of cells within a coverage range of the satellite-ground integrated network as the accessible cell configuration information set of the terminal device; or taking cell configuration information of at least one cell corresponding to a preset number of beams of the satellite-ground integrated network as the accessible cell configuration information set of the terminal device; and in a case where the terminal category is the third category of terminal, taking an empty set as the accessible cell configuration information set of the terminal device.

[0011] Optionally, updating the accessible cell configuration information set according to the non-terrestrial network cell configuration information of the second target non-terrestrial network cell that matches successfully includes: judging whether the non-terrestrial network cell configuration information of each second non-terrestrial network cell is included in the accessible cell configuration information set; in a case where the non-terrestrial network cell configuration information of all second non-terrestrial network cells is included in the accessible cell configuration information set, keeping the accessible cell configuration information set unchanged; and in a case where the non-terrestrial network cell configuration information of only part of the second non-terrestrial network cells is included in the accessible cell configuration information set, adding the non-terrestrial network cell configuration information of the second non-terrestrial network cells not included in the accessible cell configuration information set to the accessible cell configuration information set.

[0012] Optionally, the cell handover request can also carry a configuration information update property identifier, and the configuration information update property identifier includes: a first identifier for identifying permanent updating of the accessible cell configuration information set or a second identifier for identifying temporary updating of the accessible cell configuration information set.

[0013] According to another aspect of the embodiments of the present application, a network device is also provided, which comprises: a communication system comprising a terminal device and a network device, wherein the terminal device is configured to send a cell handover request to the network device, wherein the cell handover request carries at least a current ground network cell in which the terminal device is located, a movement state, and a set of accessible cell configuration information corresponding to a terminal category of the terminal device, wherein the ground network cell is any one of the cells at the edge of a ground network coverage range, and the set of accessible cell configuration information comprises at least cell configuration information of at least one network cell in a satellite-ground integrated network coverage range that can be accessed by the terminal device; and the network device is configured to perform the above-mentioned cell configuration information updating method based on a satellite-ground integrated network.

[0014] According to another aspect of the embodiments of the present application, a non-volatile storage medium is also provided, which comprises a stored computer program, wherein a device in which the non-volatile storage medium is located performs the above-mentioned cell configuration information updating method based on a satellite-ground integrated network by running the computer program.

[0015] According to another aspect of the embodiments of the present application, a network device is also provided, which comprises a memory and a processor, wherein the memory stores a computer program, and the processor is configured to perform the above-mentioned cell configuration information updating method based on a satellite-ground integrated network by running the computer program.

[0016] In the embodiments, the network device pre-sets the configuration information of each cell in the non-ground network to the terminal, and the configuration information of the cell matched with the terminal grade and the terminal baseband capability, and the remaining subsequent necessary information can be broadcasted with a small bandwidth, so that the terminal can determine the non-ground network cell that can be accessed by the terminal according to the information, to assist the terminal to quickly access the non-ground network when switching from the ground network to the non-ground network, and to solve the problem of insufficient link budget when the terminal initially accesses the non-ground network. In addition, the configuration information updating property identifier is carried in the handover request to indicate whether the update is of the coverage type or the one-time type, to enhance the flexibility of network configuration adjustment, and to ensure that different grades of terminals can have hierarchical network experience, and to improve the control ability of the operator. Therefore, the technical solution of the embodiments of the present application can effectively solve the technical problem that the satellite needs to consume a large amount of channel resources to transmit the cell configuration information to the terminal when the terminal accesses the satellite-ground integrated network, resulting in poor quality of the terminal in the satellite-ground integrated network. BRIEF DESCRIPTION OF DRAWINGS

[0017] The accompanying drawings, which are included to provide a further understanding of the present application and constitute a part of this application, illustrate certain illustrative embodiments of the present application and together with the description serve to explain the present application. In the drawings:

[0018] Figure 1is a structural schematic diagram of an optional communication system according to an embodiment of the application;

[0019] Figure 2 is a flow schematic diagram of an optional cell configuration information updating method based on a star-ground fusion network according to an embodiment of the application;

[0020] Figure 3 is a structural schematic diagram of an optional network device according to an embodiment of the application. DETAILED DESCRIPTION

[0021] In order to enable persons skilled in the art to better understand the scheme of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by persons skilled in the art without creative labor should fall within the scope of protection of the present application.

[0022] It should be noted that the terms "first", "second", and the like in the specification and claims of the present application and the above-described drawings are used to distinguish similar objects, and do not necessarily have to describe a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device that includes a series of steps or units does not have to be limited to only those steps or units clearly listed, but can include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0023] In addition, the relevant information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data for display, analyzed data, etc.) involved in the present application are all information and data authorized by the user or authorized by all parties. For example, an interface is provided between the system and the relevant user or institution. Before obtaining the relevant information, the interface needs to send a request for obtaining to the aforementioned user or institution, and after receiving the consent information fed back by the aforementioned user or institution, the relevant information is obtained.

[0024] In order to better understand the embodiments of the present application, the technical terms involved in the embodiments of the present application are explained as follows:

[0025] Non-Terrestrial Network (NTN) is a network based on satellite communication technology, which mainly relies on satellites to realize communication connection in a global range, so that the network allows users to communicate in areas where ground communication infrastructure is imperfect or cannot be covered.

[0026] Orthogonal Frequency Division Multiplexing (OFDM) is a kind of Multi-Carrier Modulation (MCM), the main idea of which is to divide the channel into several orthogonal sub-channels, convert the high-speed data signal into parallel low-speed sub-data streams, and adjust to each sub-channel for transmission. Orthogonal information can be separated by using correlation technology at the receiving end, which can reduce the mutual interference between sub-channels, and the signal bandwidth on each sub-channel is less than the correlation bandwidth of the channel, so each sub-channel can be considered as flat fading, thereby eliminating the inter-symbol interference.

[0027] System Information Block 1 (SIB1) carries relevant information when evaluating whether the UE (User Equipment) is allowed to access the cell, and defines the scheduling of other system information blocks. It also provides wireless resource configuration information common to all UEs and restriction information required by UAC (Unified Access Control).

[0028] Synchronization Signal Block (SSB) is a signal used for cell search and synchronization in 5G NR (New Radio), which includes PSS (Primary Synchronization Signal), SSS (Secondary Synchronization Signal) and PBCH (Physical Broadcast Channel). The MIB (Main Signaling Block) is included in the PBCH, and the MIB carries key information required for cell switching, such as the high 6 bits of the system frame number, the subcarrier spacing, the subcarrier offset of the SSB, etc.

[0029] The System Frame Number (SFN) is a counter used to identify the sequence number of radio frames in a wireless communication system. In cellular mobile communication systems such as 5G NR and LTE, it is a periodic counter, typically 10 bits long, with a value ranging from 0 to 1023, counting cyclically. In 5G NR, the SFN is closely related to the subframe structure. A radio frame is 10ms long and can be divided into 10 subframes. Each subframe can be further subdivided into slots, and each slot contains a certain number of OFDM symbols. The number of OFDM symbols in each slot may vary depending on the subcarrier spacing.

[0030] Half-frame indication information is used by the UE to determine whether the current subframe belongs to the first half or the second half. Generally, each radio frame can be divided into two half-frames, numbered #0 and #1 respectively. The #0 half-frame includes subframes numbered #0 to #4, while the #1 half-frame includes subframes numbered #5 to #9.

[0031] Example 1

[0032] The technical solutions of this application embodiment can be applied to various communication systems, such as: Global System of Mobile communication (GSM) system, Code Division Multiple Access (CDMA) system, Wideband Code Division Multiple Access (WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, LTE Frequency Division Duplex (FDD) system, LTE Time Division Duplex (TDD) system, Universal Mobile Telecommunication System (UMTS), Worldwide Interoperability for Microwave Access (WiMAX) communication system, or 5G system, etc.

[0033] For example, the communication system 100 used in the embodiments of this application is as follows: Figure 1 As shown. The communication system 100 may include network device 110 and terminal device 120, wherein,

[0034] The network device 110 can be a device that communicates with the terminal device 120 (or a communication terminal, a terminal). The network device 110 can provide communication coverage for a specific geographic area, and can communicate with the terminal device located within the coverage area. Optionally, the network device 110 can be a base station (Base Transceiver Station, BTS) in a GSM system or a CDMA system, a base station (NodeB, NB) in a WCDMA system, an evolved base station (eNB or eNodeB) in an LTE system, or a wireless controller in a cloud radio access network (Cloud Radio Access Network, CRAN), or the network device can be a mobile switching center, a relay station, an access point, a vehicle-mounted device, a wearable device, a hub, a switch, a bridge, a router, a network side device in a 5G network, or a network device in a future evolved public land mobile network (Public Land Mobile Network, PLMN), etc.

[0035] The communication system 100 further includes at least one terminal device 120 located within the coverage of the network device 110. As used herein, a "terminal device" includes, but is not limited to, an apparatus configured to receive / transmit communication signals via a wired line connection, such as via a Public Switched Telephone Network (PSTN), a Digital Subscriber Line (DSL), a digital cable, a direct cable connection; and / or another data connection / network; and / or a wireless interface, such as for a cellular network, a Wireless Local Area Network (WLAN), a digital television network such as a DVB-H network, a satellite network, an AM-FM broadcast transmitter; and / or another terminal device; and / or an Internet of Things (IoT) device. A terminal device configured to communicate over a wireless interface can be referred to as a "wireless communication terminal", "wireless terminal" or "mobile terminal". Examples of mobile terminals include, but are not limited to, satellite or cellular phones; Personal Communications System (PCS) terminals that can combine a cellular radiotelephone with data processing, facsimile, and data communications capabilities; PDA's that can include a wireless radio telephone, a pager, Internet / Intranet access, Web browser, organizer, calendar, and / or a Global Positioning System (GPS) receiver; and conventional laptop and / or palmtop receivers or other electronic devices that include a wireless radio telephone transceiver. A terminal device can refer to an access terminal, User Equipment (UE), subscriber unit, subscriber station, mobile station, mobile, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent, or user device. An access terminal can be a cellular telephone, a cordless telephone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handset with wireless communication capabilities, a computing device, or other processing device connected to a wireless modem, an in-vehicle device, a wearable device, a terminal device in a 5G network, or a terminal device in a future evolved PLMN, etc. Optionally, the terminal devices 120 can communicate with each other in a Device to Device (D2D) manner.

[0036] In the above operating environment, the embodiment of the present application provides an embodiment of a cell configuration information updating method based on a star-ground fusion network for a network device (hereinafter referred to as a network device) applied to the star-ground fusion network. It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a group of computer executable instructions, and although the logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in an order different from that here.

[0037] Figure 2 is a flowchart of an optional cell configuration information updating method based on a star-ground fusion network according to the embodiment of the present application, as shown in Figure 2 The method comprises steps S202-S208, wherein:

[0038] Step S202, receiving a cell switching request sent by a terminal device.

[0039] In the technical solution provided in step S202, the cell switching request carries at least a ground network cell currently occupied by the terminal device, a moving state, and a set of accessible cell configuration information corresponding to the terminal type of the terminal device. The ground network cell is any cell at the edge of the ground network coverage range. The moving state includes the moving speed and the moving direction, and the moving state can determine the star-ground fusion network cell that the terminal device in the current ground network cell is about to access. The set of accessible cell configuration information can be understood as that the network device pre-delivers the cell configuration information of at least one cell (including a ground network cell and a non-ground network cell) in the star-ground fusion network coverage range that the terminal device can access according to the terminal type of the terminal device. The purpose of pre-delivering the cell configuration information is to reduce the situation that the terminal device cannot quickly access the non-ground network cell due to insufficient link budget when the terminal device accesses the non-ground network cell in the later stage, resulting in discontinuous terminal service.

[0040] Step S204, determining a plurality of first non-ground network cells adjacent to the ground network cell according to the moving state, and obtaining network performance measurement information of each first non-ground network cell.

[0041] In the technical solution provided in step S204, the network device can determine the cells in the integrated satellite-terrestrial network that the terminal device is about to access according to the moving state of the terminal device (including the cells in the terrestrial network and the cells in the non-terrestrial network, where the cell switching in the terrestrial network (such as moving from the coverage area of one base station to the coverage area of another base station) usually has low latency and stable signal quality, while the cell switching between the terrestrial network and the non-terrestrial network (such as the satellite network) may have high latency and signal quality fluctuation due to the longer signal propagation distance of satellite communication and greater influence of atmospheric conditions. In order to solve the problem of large switching delay when the terminal switches from a cell in the terrestrial network to a cell in the non-terrestrial network, the technical solution provided in step S204 focuses on the case where the terminal switches to a non-terrestrial network cell adjacent to a terrestrial network cell. In addition, in order to determine which non-terrestrial network cell in the plurality of first non-terrestrial network cells adjacent to the terrestrial network cell the terminal finally accesses, the network device can obtain and analyze the network performance measurement information of each first non-terrestrial network cell, where the network performance measurement information includes at least one of the following: measurement information of a channel state information reference signal and signal strength measurement information of a synchronization signal block.

[0042] In step S206, at least one second non-terrestrial network cell with network performance measurement information not lower than a preset performance threshold is selected from the plurality of first non-terrestrial network cells, and the non-terrestrial network cell configuration information of each second non-terrestrial network cell is determined from the preset integrated satellite-terrestrial network cell configuration information set.

[0043] In the technical solution provided in step S206, the network device can select at least one second non-terrestrial network cell with better network quality (i.e., network performance measurement information not lower than a preset performance threshold) from the plurality of first non-terrestrial network cells according to the network performance measurement information of each first non-terrestrial network cell; and then determine the non-terrestrial network cell configuration information (i.e., the default non-terrestrial network cell configuration information preset by the system) of each second non-terrestrial network cell from the integrated satellite-terrestrial network cell configuration information set in which the cell configuration information of the plurality of cells in the integrated satellite-terrestrial network coverage range is stored.

[0044] In step S208, the accessible cell configuration information set is updated according to the non-terrestrial network cell configuration information of each second non-terrestrial network cell.

[0045] In the technical solution provided in step S208, in order to ensure the continuity of the terminal device service, the network device can update the non-terrestrial network cell configuration information of each second non-terrestrial network cell determined in the above step S206 to the accessible cell configuration information set, so as to assist the terminal device to quickly access the target non-terrestrial network cell in subsequent switching.

[0046] The above method of this embodiment is further described below.

[0047] As an optional implementation, in the technical solution provided in step S202, before receiving the cell switching request sent by the terminal device, the network device can also deliver the corresponding accessible cell configuration information set for the terminal according to the capability information reported by the terminal device.

[0048] Specifically, the network device can first acquire the network access capability and terminal category reported by the terminal device at the terrestrial network cell, wherein the network access capability includes at least one of the following: Terrestrial Network (NT) access capability, Non-Terrestrial Network (NNT) access capability; in the case where the access capability includes the Non-Terrestrial Network access capability, the set of accessible cell configuration information corresponding to the terminal category is determined from the set of Star-Earth integration network cell configuration information.

[0049] In this embodiment, the terrestrial network of the network device can monitor the network access capability of the terminal device at its coverage edge cell, wherein when the terminal device has NTN capability, the network device can determine the set of accessible cell configuration information corresponding to the category of the terminal device from the set of Star-Earth integration network cell configuration information and deliver it to the terminal device.

[0050] The set of accessible cell configuration information includes at least the cell configuration information of at least one network cell accessible to the terminal device within the coverage range of the Star-Earth integration network, and can also include the cell configuration information of at least one terrestrial network cell. The cell configuration information includes but is not limited to: orthogonal frequency division multiplexing boundary value (i.e. the starting point and end point of the orthogonal frequency division multiplexing of the Non-Terrestrial Network), cell identification (such as cell code), cell range (i.e. the coverage range of the cell), demodulation reference signal configuration information, SIB1 corresponding subcarrier spacing, SIB1 physical downlink shared channel configuration parameters, demodulation reference signal time domain position of the physical downlink shared channel (PDCCH) carrying SIB1, synchronization signal block SSB index information, coarse frequency synchronization information, half frame indication information, system frame number, etc.

[0051] Further, the category of the terminal device is determined according to at least a terminal level and a terminal baseband capability, wherein the terminal level comprises at least one of a service priority determined when the terminal device is signed up with an operator, a security level (i.e., an ability of the relevant information not to be attacked and stolen by a third party), and a terminal device type (i.e., a product type corresponding to the terminal device, such as a vehicle-mounted terminal, a ship-mounted terminal, a handheld industry-level terminal, and a public handheld mobile terminal); and the terminal baseband capability comprises at least one of a storage space, a processor processing capability, and a high-speed mobile processing capability. It should be noted that the service priority of the terminal device is generally determined by the operator, and the security level, the terminal device type, and the terminal baseband capability are determined and approved by the manufacturer.

[0052] Therefore, according to the terminal level and the terminal baseband capability, the terminal device can be divided into three categories, including:

[0053] The first category of terminal device (i.e., high level and high capability): the terminal level is not lower than a preset level threshold, and the terminal baseband capability is not lower than a preset capability threshold;

[0054] The second category of terminal device (i.e., high level and low capability): the terminal level is not lower than the preset level threshold, but the terminal baseband capability is lower than the preset capability threshold;

[0055] The third category of terminal device (i.e., low level and low capability): the terminal level is lower than the preset level threshold, and the terminal baseband capability is lower than the preset capability threshold.

[0056] Further, for the three types of terminal devices, the corresponding accessible cell configuration information set can be determined according to the following rules, including:

[0057] (I) The terminal category of the terminal device is the first category of terminal device.

[0058] The network device can set the satellite-ground integrated network cell configuration information set as the accessible cell configuration information set of the terminal device. That is, the terminal device is notified of the cell configuration information of all cells in the coverage of the satellite-ground integrated network, so as to serve as the accessible cell configuration information set of the terminal device.

[0059] It should be noted that, for the first category of terminal device, the cell configuration information of the non-terrestrial network cell under the beam corresponding to the expected geographic area can be given according to the use range of the terminal device (e.g., a satellite terminal used for a certain geographic area).

[0060] (II) The terminal category of the terminal device is the second category of terminal device.

[0061] The network device can determine at least one cell whose cell configuration information is below a preset performance threshold in a plurality of cells in the coverage of the integrated satellite-ground network as the accessible cell configuration information set of the terminal device; or determine at least one cell corresponding to a preset number of beams of the integrated satellite-ground network as the accessible cell configuration information set of the terminal device.

[0062] That is, the network device can distribute cell configuration information of some cells in the coverage of the integrated satellite-ground network to the terminal device, where the network quality of these cells is generally poor (i.e., the network quality is below a preset threshold), such as areas with poor ground network coverage, such as high mountains, wild water areas, etc. The network device can also distribute cell configuration information of cells corresponding to some beams of the integrated satellite-ground network to the terminal device. For example, if the total number of beams of the integrated satellite-ground network is N, the terminal can be preconfigured according to the storage and processing capability of the terminal and in a sparse N*(X) % downward rounding manner, so as to ensure that the pre-stored cell configuration information does not occupy too much memory space, and also to enable the terminal to move in a beam coverage cell with pre-stored cell configuration information to improve the probability of accessing the network.

[0063] (Three) The terminal category of the terminal device is a third terminal.

[0064] The network device can distribute an empty set to the terminal device as the accessible cell configuration information set of the terminal device.

[0065] As an optional implementation, in the technical solution provided in the above step S206, the network device can determine the non-terrestrial network cell configuration information of each second non-terrestrial network cell according to the following method, comprising:

[0066] First step: determining the cell identifier of each second non-terrestrial network cell, where the cell identifier can be a cell number;

[0067] Second step: matching the cell identifier of each second non-terrestrial network cell with the integrated satellite-ground network cell configuration information set to obtain the non-terrestrial network cell configuration information of each second non-terrestrial network cell.

[0068] Wherein, the above integrated satellite-ground network cell configuration information set can be a table form storing the correspondence between the cell identifier and the cell configuration information. Therefore, the above first step and second step can be understood as follows: first, determine the cell identifier of each second non-terrestrial network cell, and then use the cell identifier as an index to find the corresponding non-terrestrial network cell configuration information from the integrated satellite-ground network cell configuration information set according to the index.

[0069] As an optional implementation, in the technical solution provided in the above step S208, the method can comprise:

[0070] Firstly, it is judged whether there is non-terrestrial network cell configuration information of each second non-terrestrial network cell in the accessible cell configuration information set, wherein:

[0071] Case one: the accessible cell configuration information set contains non-terrestrial network cell configuration information of all second non-terrestrial network cells.

[0072] In the above case, the accessible cell configuration information set already contains non-terrestrial network cell configuration information of these second non-terrestrial network cells, so the network device can keep the accessible cell configuration information set of the terminal device unchanged and does not need to update the accessible cell configuration information set.

[0073] Case two: the accessible cell configuration information set contains only part of the non-terrestrial network cell configuration information of the second non-terrestrial network cells.

[0074] In the above case, the accessible cell configuration information set only contains part of the non-terrestrial network cell configuration information of the second non-terrestrial network cells, at this time the network device can add the non-terrestrial network cell configuration information of the second non-terrestrial network cells not contained to the accessible cell configuration information set, and the network device can download the remaining non-terrestrial network cell configuration information not contained to the terminal device with a smaller bandwidth when the terminal performs cell switching.

[0075] Further, the cell switching request can also carry a configuration information update property identifier, and the configuration information update property identifier includes: the configuration information update property identifier includes a first identifier for identifying permanent update of the accessible cell configuration information set or a second identifier for identifying temporary update of the accessible cell configuration information set.

[0076] Based on the scheme defined in steps S202 to S208, in an embodiment, the network device pre-sets the configuration information of each cell in the non-terrestrial network to the terminal which matches the terminal grade and the configuration information of the cell with the terminal baseband capability, and the remaining subsequent necessary information can be broadcasted with a small bandwidth, so that the terminal can determine the non-terrestrial network cell which can be accessed by the terminal according to the information, to assist the terminal to quickly switch from the terrestrial network cell to the non-terrestrial network cell, and to solve the problem of insufficient link budget when the terminal initially accesses the non-terrestrial network cell. In addition, the configuration information update property identifier is carried in the handover request to indicate whether the update is an overlay type or an one-time type, to enhance the flexibility of network configuration adjustment, and to ensure that different grades of terminals can have hierarchical network experience, and to improve the control ability of the operator. As can be seen, the technical scheme of the embodiment of the present application can effectively solve the technical problem that when the terminal accesses the star-ground fusion network, the satellite needs to consume a large amount of channel resources to transmit cell configuration information to the terminal, resulting in poor quality of the terminal in the star-ground fusion network.

[0077] Embodiment 2

[0078] According to the embodiments of the present application, a non-volatile storage medium is also provided, and the non-volatile storage medium stores a program. When the program runs, the device in which the non-volatile storage medium is located performs the cell configuration information updating method based on the star-ground fusion network in the embodiment 1.

[0079] Optionally, the device in which the non-volatile storage medium is located performs the following steps by running the program: receiving a cell handover request initiated by a terminal device, and the cell handover request at least carries a terrestrial network cell currently located by the terminal device, a movement state, and a set of accessible cell configuration information corresponding to a terminal category of the terminal device, wherein the terrestrial network cell is any one cell at the edge of the coverage range of the terrestrial network, and the set of accessible cell configuration information at least includes cell configuration information of at least one network cell in the coverage range of the star-ground fusion network which can be accessed by the terminal device; determining a plurality of first non-terrestrial network cells adjacent to the terrestrial network cell according to the movement state, and obtaining network performance measurement information of each first non-terrestrial network cell; selecting at least one second non-terrestrial network cell with network performance measurement information not lower than a preset performance threshold from the plurality of first non-terrestrial network cells, and determining non-terrestrial network cell configuration information of each second non-terrestrial network cell from a preset set of star-ground fusion network cell configuration information, wherein the set of star-ground fusion network cell configuration information includes cell configuration information of a plurality of cells in the coverage range of the star-ground fusion network, and the type of the cell includes a terrestrial network cell or a non-terrestrial network cell; and updating the set of accessible cell configuration information according to the non-terrestrial network cell configuration information of each second non-terrestrial network cell.

[0080] According to the embodiment of the present application, a computer program product is also provided, which comprises a stored computer program, wherein the computer program is executed by a processor to implement the cell configuration information updating method based on the integrated satellite-terrestrial network in the embodiment 1.

[0081] Optionally, the computer program is executed to implement the following steps: receiving a cell handover request initiated by a terminal device, the cell handover request carrying at least a ground network cell currently located by the terminal device, a movement state, and a set of accessible cell configuration information corresponding to a terminal category of the terminal device, wherein the ground network cell is any one of cells at an edge of a coverage range of the ground network, and the set of accessible cell configuration information comprises at least cell configuration information of at least one network cell accessible by the terminal device in a coverage range of the integrated satellite-terrestrial network; determining a plurality of first non-ground network cells adjacent to the ground network cell according to the movement state, and obtaining network performance measurement information of each first non-ground network cell; selecting at least one second non-ground network cell with network performance measurement information not lower than a preset performance threshold from the plurality of first non-ground network cells, and determining non-ground network cell configuration information of each second non-ground network cell from a preset set of integrated satellite-terrestrial network cell configuration information, wherein the set of integrated satellite-terrestrial network cell configuration information comprises cell configuration information of a plurality of cells in the coverage range of the integrated satellite-terrestrial network, and the type of the cell comprises a ground network cell or a non-ground network cell; and updating the set of accessible cell configuration information according to the non-ground network cell configuration information of each second non-ground network cell.

[0082] According to the embodiment of the present application, a processor is also provided, which is used to run a program, wherein the program is executed to implement the cell configuration information updating method based on the integrated satellite-terrestrial network in the embodiment 1.

[0083] Optionally, the program is run to perform the following steps: receiving a cell handover request initiated by a terminal device, the cell handover request carrying at least a ground network cell currently located by the terminal device, a movement state, and a set of accessible cell configuration information corresponding to a terminal category of the terminal device, wherein the ground network cell is any one of cells at an edge of a coverage range of a ground network, and the set of accessible cell configuration information includes at least cell configuration information of at least one network cell accessible by the terminal device in a coverage range of a space-ground integration network; determining a plurality of first non-ground network cells adjacent to the ground network cell according to the movement state, and obtaining network performance measurement information of each first non-ground network cell; selecting at least one second non-ground network cell with network performance measurement information not lower than a preset performance threshold from the plurality of first non-ground network cells, and determining non-ground network cell configuration information of each second non-ground network cell from a preset set of space-ground integration network cell configuration information, wherein the set of space-ground integration network cell configuration information includes cell configuration information of a plurality of cells in the coverage range of the space-ground integration network, and the type of the cell includes a ground network cell or a non-ground network cell; and updating the set of accessible cell configuration information according to the non-ground network cell configuration information of each second non-ground network cell.

[0084] According to the embodiments of the present application, a network device is also provided, wherein, Figure 3 is a structural schematic diagram of an optional network device according to the embodiments of the present application, as Figure 3 shown. The network device includes one or more processors; a memory for storing one or more programs, when the one or more programs are executed by the one or more processors, the one or more processors are caused to implement a program for running, wherein the program is configured to run to perform the cell configuration information updating method based on the space-ground integration network in the above-mentioned embodiment 1.

[0085] Optionally, the processor is configured to implement the following steps by a computer program execution: receiving a cell handover request initiated by a terminal device, the cell handover request carrying at least a current ground network cell where the terminal device is located, a movement state, and a set of accessible cell configuration information corresponding to a terminal category of the terminal device, wherein the ground network cell is any one of cells at an edge of a coverage range of a ground network, and the set of accessible cell configuration information at least includes cell configuration information of at least one network cell in a coverage range of a space-ground integration network that is accessible to the terminal device; determining a plurality of first non-ground network cells adjacent to the ground network cell according to the movement state, and obtaining network performance measurement information of each first non-ground network cell; selecting at least one second non-ground network cell with network performance measurement information not lower than a preset performance threshold from the plurality of first non-ground network cells, and determining non-ground network cell configuration information of each second non-ground network cell from a preset set of space-ground integration network cell configuration information, wherein the set of space-ground integration network cell configuration information includes cell configuration information of a plurality of cells in the coverage range of the space-ground integration network, and the type of the cell includes a ground network cell or a non-ground network cell; and updating the set of accessible cell configuration information according to the non-ground network cell configuration information of each second non-ground network cell.

[0086] The above sequence numbers of the embodiments of the present application are only for description, and do not represent the advantages or disadvantages of the embodiments.

[0087] In the above embodiments of the present application, the description of each embodiment has its own focus, and the parts not described in detail in a certain embodiment can be referred to the related description of other embodiments.

[0088] In the several embodiments of the present application, it should be understood that the disclosed technology can be implemented in other ways. Of course, the unit described as the division is only a logical function division, and there can be other division manners in actual implementation, for example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the units shown or discussed can be indirect coupling or communication connection through some interfaces, units or modules, and can be electrical or other forms.

[0089] The units described as separate components can or can not be physically separate, and the components shown as units can or can not be physical units, that is, they can be located in one place, or can be distributed on multiple units. According to actual needs, part or all of the units can be selected to achieve the purpose of the embodiments.

[0090] In addition, each function unit in each embodiment of the present application can be integrated in one processing unit, or each unit can be physically present separately, or two or more units can be integrated in one unit. The integrated unit can be realized in the form of hardware or in the form of a software function unit.

[0091] When the integrated unit is realized in the form of a software function unit and sold or used as an independent product, it can be stored in a computer readable storage medium. Based on such understanding, the technical solutions of the present application or the part that essentially contributes to the related art or the whole or part of the technical solutions can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes a plurality of instructions for causing a computer device (which can be a personal computer, a server or a network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present application. The foregoing storage medium includes a U disk, a read-only memory (ROM), a random access memory (RAM), a mobile hard disk, a magnetic disk or an optical disk, and various media that can store program codes.

[0092] The above is only the preferred embodiment of the present application. It should be pointed out that, for those skilled in the art, without departing from the principle of the present application, a number of improvements and refinements can be made, which should be regarded as the protection scope of the present application.

Claims

1. A method for updating cell configuration information based on a satellite-ground integrated network, characterized in that, The method comprises: obtaining a network access capability and a terminal category reported by a terminal device at a ground network cell, wherein the network access capability comprises at least one of a ground network access capability and a non-ground network access capability; in a case where the access capability comprises the non-ground network access capability, determining, from a set of integrated satellite-ground network cell configuration information, a set of accessible cell configuration information corresponding to the terminal category, and delivering the set of accessible cell configuration information to the terminal device, wherein the set of integrated satellite-ground network cell configuration information comprises cell configuration information of a plurality of cells in an integrated satellite-ground network coverage, and the cells comprise ground network cells or non-ground network cells; receiving a cell handover request initiated by the terminal device, wherein the cell handover request at least carries a ground network cell currently occupied by the terminal device, a movement state, and a set of accessible cell configuration information corresponding to the terminal category of the terminal device, wherein the ground network cell is any one of cells at an edge of a ground network coverage, and the set of accessible cell configuration information at least comprises cell configuration information of at least one network cell accessible to the terminal device in the integrated satellite-ground network coverage; determining a plurality of first non-ground network cells adjacent to the ground network cell according to the movement state, and obtaining network performance measurement information of each of the first non-ground network cells; selecting, from the plurality of first non-ground network cells, at least one second non-ground network cell with network performance measurement information not lower than a preset performance threshold, and determining non-ground network cell configuration information of each of the second non-ground network cells from the set of integrated satellite-ground network cell configuration information; updating the set of accessible cell configuration information according to the non-ground network cell configuration information of each of the second non-ground network cells.

2. The method of claim 1, wherein, The terminal category is determined at least according to a terminal grade and a terminal baseband capability, the set of accessible cell configuration information comprises cell configuration information of ground network cells and / or cell configuration information of non-ground network cells, and the cell configuration information at least comprises the following: orthogonal frequency division multiplexing symbol boundary, cell identifier, cell range, demodulation reference signal configuration information, subcarrier spacing corresponding to system information block (SIB1), configuration parameter of a physical downlink shared channel of SIB1, time domain position of a demodulation reference signal of a physical downlink shared channel carrying SIB1, index information of a synchronization signal block, coarse frequency synchronization information, half-frame indication information, and system frame number. The terminal category comprises: a first type of terminal for representing that the terminal grade is not lower than a preset grade threshold and the terminal baseband capability is not lower than a preset capability threshold; a second type of terminal for representing that the terminal grade is not lower than the preset grade threshold but the terminal baseband capability is lower than the preset capability threshold; and a third type of terminal for representing that the terminal grade is lower than the preset grade threshold and the terminal baseband capability is lower than the preset capability threshold.

3. The method of claim 2, wherein, 4. The method of claim 2, wherein ​ The terminal level includes at least one of the following: a service priority determined when signing a contract with an operator, a security level, and a terminal device type. The terminal baseband capability includes at least one of the following: a storage space, a processor processing capability, and a high-speed mobile processing capability.

5. The method of claim 3, wherein, The terminal category corresponds to a set of accessible cell configuration information from the set of satellite-ground fusion network cell configuration information, including: In the case of the terminal category being the first type of terminal, the set of satellite-ground fusion network cell configuration information is used as the set of accessible cell configuration information of the terminal device. In the case of the terminal category being the second type of terminal, at least one cell configuration information of a cell whose network performance is lower than a preset performance threshold in a plurality of cells within the coverage of the satellite-ground fusion network is used as the set of accessible cell configuration information of the terminal device; or at least one cell configuration information of a cell corresponding to a preset number of beams of the satellite-ground fusion network is used as the set of accessible cell configuration information of the terminal device. In the case of the terminal category being the third type of terminal, an empty set is used as the set of accessible cell configuration information of the terminal device.

6. The method of claim 1, wherein, The set of accessible cell configuration information is updated according to the non-terrestrial network cell configuration information of each second non-terrestrial network cell, including: It is determined whether the non-terrestrial network cell configuration information of each second non-terrestrial network cell is included in the set of accessible cell configuration information. When all the non-terrestrial network cell configuration information of the second non-terrestrial network cell is included in the set of accessible cell configuration information, the set of accessible cell configuration information remains unchanged. When only part of the non-terrestrial network cell configuration information of the second non-terrestrial network cell is included in the set of accessible cell configuration information, the non-terrestrial network cell configuration information of the second non-terrestrial network cell not included in the set of accessible cell configuration information is added to the set of accessible cell configuration information.

7. The method of claim 6, wherein, The cell handover request can also carry a configuration information update property identifier, and the configuration information update property identifier includes a first identifier for identifying permanent updating of the set of accessible cell configuration information or a second identifier for identifying temporary updating of the set of accessible cell configuration information.

8. A communication system, characterized by The communication system includes a terminal device and a network device, wherein The terminal device is configured to send a cell handover request to the network device, wherein the cell handover request at least carries a terrestrial network cell currently occupied by the terminal device, a mobile state, and a set of accessible cell configuration information corresponding to a terminal category of the terminal device, wherein the terrestrial network cell is any one of the cells at the edge of the terrestrial network coverage, and the set of accessible cell configuration information at least includes cell configuration information of at least one network cell accessible to the terminal device within the coverage of the satellite-ground fusion network. The network device is configured to perform the cell configuration information updating method based on the satellite-ground fusion network according to any one of claims 1-7.

9. A non-volatile storage medium, characterized by, The non-volatile storage medium stores a computer program, and a device in which the non-volatile storage medium is located executes the cell configuration information updating method based on the star-ground fusion network by running the computer program.

10. A network device, comprising: Comprise: A memory and a processor, the processor is used to run the program stored in the memory, wherein the program runs to execute the cell configuration information updating method based on the star-ground fusion network in any one of claims 1 to 7.

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