Paging method and apparatus, device, chip and storage medium

Abstract

A paging method and apparatus, a device, a chip, and a storage medium, relating to the technical field of communications. The method comprises: a terminal device negotiates with a core network element to determine a first DRX cycle and / or a first eDRX cycle specific to the terminal device, wherein the first DRX cycle and / or the first eDRX cycle are / is applicable to paging the terminal device in a cell that is in a TDD mode (310). The terminal device negotiates with the core network element to determine the first DRX cycle and / or the first eDRX cycle specific to the terminal device, so that the terminal device can normally receive paging in the cell that is in the TDD mode, thereby improving paging reliability.

Description

Paging methods, devices, equipment, chips and storage media Technical Field

[0001] This application relates to the field of communication technology, and in particular to a paging method, apparatus, device, chip, and storage medium. Background Technology

[0002] NTN (Non-Terrestrial Networks) and TDD (Time Division Duplex) systems refer to wireless communication systems based on non-terrestrial platforms. Uplink and downlink transmission are achieved by dividing time into multiple independent time slots, each of which can be dedicated to either uplink or downlink transmission.

[0003] The introduction of TDD mode will lead to discontinuous uplink and downlink transmission, and it is necessary to study the impact of this transmission method on terminal equipment listening and paging. Summary of the Invention

[0004] This application provides a paging method, apparatus, device, chip, and storage medium. The technical solution provided by this application is as follows.

[0005] According to one aspect of the embodiments of this application, a paging method is provided, the method being executed by a terminal device, the method comprising:

[0006] The first DRX (Discontinuous Reception) period and / or the first eDRX (enhanced Discontinuous Reception) period, dedicated to the terminal device, are determined in consultation with the core network elements. The first DRX period and / or the first eDRX period are applicable to cell paging of the terminal device in TDD mode.

[0007] According to one aspect of the embodiments of this application, a paging method is provided, the method being executed by an access network device, the method comprising:

[0008] The terminal device is paged based on a first DRX cycle and / or a first eDRX cycle specific to the terminal device, wherein the first DRX cycle and / or the first eDRX cycle is applicable to paging the terminal device in a TDD mode cell.

[0009] According to one aspect of the embodiments of this application, a paging method is provided, the method being executed by a core network element, the method comprising:

[0010] The terminal device negotiates and determines a first DRX cycle and / or a first eDRX cycle specific to the terminal device, wherein the first DRX cycle and / or the first eDRX cycle are applicable to cell paging of the terminal device in TDD mode.

[0011] According to one aspect of the embodiments of this application, a paging device is provided, the device comprising:

[0012] The communication module is used to negotiate with core network elements to determine a first DRX cycle and / or a first eDRX cycle specific to the terminal device, wherein the first DRX cycle and / or the first eDRX cycle are applicable to cell paging of the terminal device in TDD mode.

[0013] According to one aspect of the embodiments of this application, a paging device is provided, the device comprising:

[0014] The processing module is configured to page the terminal device based on a first DRX cycle and / or a first eDRX cycle specific to the terminal device, wherein the first DRX cycle and / or the first eDRX cycle is applicable to paging the terminal device in a TDD mode cell.

[0015] According to one aspect of the embodiments of this application, a paging device is provided, the device comprising:

[0016] A communication module is used to negotiate with a terminal device to determine a first DRX cycle and / or a first eDRX cycle specific to the terminal device, wherein the first DRX cycle and / or the first eDRX cycle is applicable to cell paging of the terminal device in TDD mode.

[0017] According to one aspect of the embodiments of this application, a terminal device is provided, the terminal device including a processor and a memory, the memory storing a computer program, and the processor executing the computer program to implement the paging method on the terminal device side described above.

[0018] According to one aspect of the embodiments of this application, an access network device is provided, the access network device including a processor and a memory, the memory storing a computer program, the processor executing the computer program to implement the paging method on the access network device side described above.

[0019] According to one aspect of the embodiments of this application, a core network element is provided, the core network element including a processor and a memory, the memory storing a computer program, and the processor executing the computer program to implement the paging method on the core network element side described above.

[0020] According to one aspect of the embodiments of this application, a computer-readable storage medium is provided, the storage medium storing a computer program, the computer program being executed by a processor to implement the paging method on the terminal device side, or the paging method on the access network device side, or the paging method on the core network element side.

[0021] According to one aspect of the embodiments of this application, a chip is provided, the chip including programmable logic circuits and / or program instructions, which, when the chip is running, are used to implement the paging method on the terminal device side, or the paging method on the access network device side, or the paging method on the core network element side.

[0022] According to one aspect of the embodiments of this application, a computer program product is provided, the computer program product including computer instructions stored in a computer-readable storage medium, a processor reading from the computer-readable storage medium and executing the computer instructions to implement the paging method on the terminal device side, or the paging method on the access network device side, or the paging method on the core network element side.

[0023] The technical solutions provided in this application embodiment may have the following beneficial effects:

[0024] By negotiating with the core network elements, the terminal equipment determines its own first DRX cycle and / or first eDRX cycle, enabling the terminal equipment to receive paging normally in TDD mode cells and improving paging reliability. Attached Figure Description

[0025] Figure 1 is a schematic diagram of a network architecture provided in one embodiment of this application;

[0026] Figure 2 is a schematic diagram of the frame structure in TDD mode provided in an embodiment of this application;

[0027] Figure 3 is a flowchart of a paging method provided in an embodiment of this application;

[0028] Figure 4 is a flowchart of a paging method provided in another embodiment of this application;

[0029] Figure 5 is a flowchart of a paging method provided in another embodiment of this application;

[0030] Figure 6 is a flowchart of a paging method provided in another embodiment of this application;

[0031] Figure 7 is a flowchart of a paging method provided in another embodiment of this application;

[0032] Figure 8 is a block diagram of a paging device provided in an embodiment of this application;

[0033] Figure 9 is a block diagram of a paging device provided in another embodiment of this application;

[0034] Figure 10 is a block diagram of a paging device provided in another embodiment of this application;

[0035] Figure 11 is a schematic diagram of the structure of a terminal device provided in an embodiment of this application;

[0036] Figure 12 is a schematic diagram of the structure of an access network device provided in an embodiment of this application;

[0037] Figure 13 is a schematic diagram of the structure of a core network element provided in an embodiment of this application. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0039] The network architecture and business scenarios described in the embodiments of this application are for the purpose of more clearly illustrating the technical solutions of the embodiments of this application, and do not constitute a limitation on the technical solutions provided in the embodiments of this application. As those skilled in the art will know, with the evolution of network architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of this application are also applicable to similar technical problems.

[0040] The technical solutions of this application embodiment can be applied to various communication systems, such as: Global System for 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, Advanced Long Term Evolution (LTE-A) system, New Radio (NR) system, evolution of NR system, LTE-based access to unlicensed spectrum (LTE-U) system, NR-based access to unlicensed spectrum (NR-U) system, Non-Terrestrial Networks (NTN) system, Universal Mobile Telecommunication System (UMTS), Wireless Local Area Networks (WLAN), and Wireless Fidelity (WF). Fidelity (WiFi), 5th-Generation (5G) systems, B5G (Beyound 5G) systems, 6th-Generation (6G) systems, or other communication systems.

[0041] Traditional communication systems typically support a limited number of connections and are easy to implement. However, with the development of communication technology, mobile communication systems will not only support traditional communication but also, for example, device-to-device (D2D) communication, machine-to-machine (M2M) communication, machine-type communication (MTC), vehicle-to-vehicle (V2V) communication, or vehicle-to-everything (V2X) communication. The embodiments of this application can also be applied to these communication systems.

[0042] The communication system in this application embodiment can be applied to carrier aggregation (CA) scenarios, dual connectivity (DC) scenarios, and standalone (SA) network deployment scenarios.

[0043] The communication system in this application embodiment can be applied to unlicensed spectrum, wherein unlicensed spectrum can also be considered as shared spectrum; or, the communication system in this application embodiment can also be applied to licensed spectrum, wherein licensed spectrum can also be considered as non-shared spectrum.

[0044] The embodiments of this application can be applied to both non-terrestrial networks (NTN) and terrestrial networks (TN). NTN typically uses satellite communication to provide communication services to terrestrial users. Currently, NTN systems include NR-NTN and IoT-NTN systems, and other NTN systems may be included in the future.

[0045] Please refer to Figure 1, which shows a schematic diagram of a network architecture 100 provided in one embodiment of this application. The network architecture 100 may include: a terminal device 10, an access network device 20, and a core network element 30.

[0046] Terminal device 10 can refer to UE (User Equipment), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, wireless communication device, user agent, or user equipment. In some embodiments, terminal device 10 can also be a cellular phone, cordless phone, SIP (Session Initiation Protocol) phone, WLL (Wireless Local Loop) station, PDA (Personal Digital Assistant), handheld device with wireless communication capabilities, computing device or other processing device connected to a wireless modem, vehicle-mounted device, wearable device, terminal device in 5GS (5th Generation System), or terminal device in the future evolved PLMN (Public Land Mobile Network), etc., and this application embodiment is not limited to these. For ease of description, the devices mentioned above are collectively referred to as terminal devices. The number of terminal devices 10 is usually multiple, and one or more terminal devices 10 can be distributed within the cell managed by each access network device 20. Terminal equipment can also be simply referred to as terminal or UE, the meaning of which can be understood by those skilled in the art.

[0047] Access network device 20 is a device deployed in an access network to provide wireless communication functionality to terminal device 10. Access network device 20 may include various forms of macro base stations, micro base stations, relay stations, access points, etc. In systems employing different wireless access technologies, the name of the device with access network device functionality may differ; for example, in a 5G NR system, it is called gNodeB or gNB. As communication technologies evolve, the name "access network device" may change. For ease of description, in this embodiment, the aforementioned devices providing wireless communication functionality to terminal device 10 are collectively referred to as access network devices. In some embodiments, a communication relationship can be established between terminal device 10 and core network element 30 through access network device 20. For example, in an LTE (Long Term Evolution) system, access network device 20 may be one or more eNodeBs in an EUTRAN (Evolved Universal Terrestrial Radio Access Network) or EUTRAN; in a 5G NR system, access network device 20 may be one or more gNBs in a RAN (Radio Access Network). In the embodiments of this application, unless otherwise specified, the term "network device" refers to access network device 20, such as a base station.

[0048] Core network element 30 is a network element deployed in the core network. Its main functions are to provide user connectivity, manage users, and bear services, serving as an interface to external networks. For example, core network elements in a 5G NR system may include AMF (Access and Mobility Management Function) entities, UPF (User Plane Function) entities, and SMF (Session Management Function) entities.

[0049] In some embodiments, the access network device 20 and the core network element 30 communicate with each other via some air interface technology, such as the NG interface in a 5G NR system. The access network device 20 and the terminal device 10 communicate with each other via some air interface technology, such as the Uu interface.

[0050] The "5G NR system" in this application embodiment can also be referred to as a 5G system or an NR system, but those skilled in the art will understand its meaning. The technical solutions described in this application embodiment can be applied to LTE systems, 5G NR systems, and subsequent evolution systems of 5G NR systems (such as B5G (Beyond 5G, a fifth-generation mobile communication technology) systems, 6G systems (6th Generation System, a sixth-generation mobile communication system)), and other communication systems such as NB-IoT (Narrow Band Internet of Things) systems. This application does not limit these applications.

[0051] In this embodiment, the network device can provide services to a cell. The terminal device communicates with the network device through the transmission resources (e.g., frequency domain resources, or spectrum resources) on the carrier used by the cell. The cell can be the cell corresponding to the network device (e.g., a base station). The cell can belong to a macro base station or to a base station corresponding to a small cell. The small cell can include: metro cell, micro cell, pico cell, femto cell, etc. These small cells have the characteristics of small coverage area and low transmission power, and are suitable for providing high-speed data transmission services.

[0052] Before introducing the technical solution of this application, some related technical knowledge involved in this application will be introduced and explained. The following related technologies are optional solutions and can be arbitrarily combined with the technical solutions of the embodiments of this application, all of which fall within the protection scope of the embodiments of this application. The embodiments of this application include at least some of the following contents.

[0053] 1.NTN

[0054] NTN typically uses satellite communication to provide communication services to terrestrial users. Compared to terrestrial cellular communication, satellite communication has many unique advantages. First, satellite communication is not limited by the user's geographical location. For example, conventional terrestrial communication cannot cover areas such as oceans, mountains, and deserts where communication equipment cannot be installed, or areas with sparse populations where communication coverage is not available. However, with satellite communication, a single satellite can cover a large area, and since satellites orbit the Earth, theoretically every corner of the Earth can be covered by satellite communication. Second, satellite communication has significant social value. Satellite communication can provide coverage in remote mountainous areas and impoverished countries or regions at a relatively low cost, enabling people in these areas to enjoy advanced voice communication and mobile internet technologies, helping to narrow the digital divide with developed regions and promoting development in these areas. Third, satellite communication has a long range, and the cost does not increase significantly with increasing communication distance. Finally, satellite communication is highly stable and is not affected by natural disasters.

[0055] Communication satellites are classified according to their orbital altitude into LEO (Low-Earth Orbit) satellites, MEO (Medium-Earth Orbit) satellites, GEO (Geostationary Earth Orbit) satellites, HEO (High Elliptical Orbit) satellites, and so on. Currently, research primarily focuses on LEO and GEO.

[0056] (1) LEO: Low Earth Orbit satellites range in altitude from 500km to 1500km, with corresponding orbital periods of approximately 1.5 hours to 2 hours. The signal propagation delay for single-hop communication between users is generally less than 20ms. The maximum satellite visibility time is 20 minutes. The signal propagation distance is short, the link loss is low, and the requirements for the transmission power of user terminals are not high.

[0057] (2) GEO: Geosynchronous orbit satellite, with an orbital altitude of 35,786 km and an orbital period of 24 hours around the Earth. The signal propagation delay for single-hop communication between users is generally 250 ms.

[0058] To ensure satellite coverage and improve the overall capacity of the satellite communication system, satellites use multi-beam coverage to cover the ground. A single satellite can generate dozens or even hundreds of beams to cover the ground; a single satellite beam can cover a ground area with a diameter of tens to hundreds of kilometers.

[0059] 2. LTE paging mechanism

[0060] The main function of paging is to enable network devices to page terminal devices via paging messages in the RRC_IDLE (idle) or RRC_INACTIVE (inactive) states of the terminal devices, or to notify the terminal devices of system message changes or earthquake / tsunami / public warning information via short messages (applicable to all RRC (Radio Resource Control) states of the terminal devices, including connected state).

[0061] Paging consists of a PDCCH (Physical Downlink Control Channel) scrambled with P-RNTI (Paging Radio Network Temporary Identifier) ​​and a PDSCH (Physical Downlink Shared Channel) scheduled by the PDCCH. Paging messages are transmitted in the PDSCH.

[0062] For terminal devices in RRC_IDLE or RRC_INACTIVE states, since there is no other data communication between the terminal device and the network device, to save power, the terminal device can listen to the paging channel discontinuously, i.e., using the Paging DRX (Discontinuous Reception) mechanism. Under the Paging DRX mechanism, the terminal device only needs to listen to paging during one PO period within each DRX Circle. PO refers to a subframe on which the network device can transmit a P-RNTI scrambled PDCCH, an eMTC (enhanced Machine Type Communication) PDCCH (MPDCCH), or, for NB-IoT, an NPDCCH to indicate the paging message. For P-RNTI scrambled MPDCCH, PO refers to the starting subframe of the MPDCCH repetition. For P-RNTI scrambled NPDCCH, PO refers to the starting subframe of NPDCCH retransmission, unless the PO subframe is an invalid NB-IoT downlink subframe. In this case, the first valid subframe after the PO is the starting subframe of NPDCCH retransmission. There is also the concept of PF, which refers to a radio frame (fixed at 10ms), which can contain multiple POs.

[0063] The Paging DRX cycle is determined by both the common cycle in system broadcasts and the dedicated cycle configured in higher-layer signaling (NAS (Non-Access Stratum) signaling). The terminal device takes the shorter of these two cycles as its Paging Cycle. From the network device's perspective, a Paging DRX cycle can have multiple Points of Interest (POs). The location of the PO that the terminal device listens to is related to the terminal device's ID. The specific method for determining the PF and PO for a given terminal device within a Paging DRX is as follows:

[0064] The SFN (System Frame Number) of a PF is determined by the following formula: SFN mod T = (T div N) * (UE_ID mod N). The index (i_s) of a PO within a PF is determined by the following formula: i_s = floor(UE_ID / N) mod Ns.

[0065] The explanations of some of the parameters above are as follows:

[0066] T: The DRX period received by the terminal device from Paging. The network device will broadcast a default DRX period. For NB-IoT, if the higher layer configures a terminal-specific DRX period for the terminal device, and the network device broadcasts a minimum terminal-specific DRX period, then T = min(default DRX period broadcast by the network device, max(terminal-specific DRX period, minimum terminal-specific DRX period broadcast by the network device)). If the higher layer does not configure a terminal-specific DRX period for the terminal device, or the network device does not broadcast a minimum terminal-specific DRX period, then T is the default DRX period broadcast by the network device.

[0067] N: The number of power points (PFs) contained in a DRX cycle.

[0068] Ns: The number of POs contained in a PF.

[0069] mod: represents the modulo operation, used to find the remainder after dividing two expressions. For example, A mod B means the remainder when expression A is divided by expression B.

[0070] div: represents division operation, such as C div D means that expression C is divided by expression D.

[0071] floor: indicates rounding down, such as floor(E) means rounding down the expression E.

[0072] min: indicates finding the minimum value. For example, min(F,G) means determining the smaller expression from expressions F and G.

[0073] max: indicates finding the minimum value. For example, max(F,G) means determining the larger expression between expressions F and G.

[0074] For a terminal device, based on the above formula, the position of the PF and the index of the PO in a Paging DRX cycle can be determined. The terminal device then blindly checks the Paging message based on the determined PO.

[0075] To increase paging capacity, NB-IoT introduces non-anchor carriers, while also supporting variations in paging load across different DL (Downlink) carriers. To this end, network devices can broadcast a list of DL non-anchors and configure a paging weight w for each DL anchor carrier and each DL non-anchor carrier. This parameter controls the distribution of paging load across different DL carriers. The terminal device determines its paging carrier based on the UE_ID and the above configuration. Specifically, the terminal device's paging carrier is the smallest index n (0 ≤ n ≤ Nn-1) that satisfies the following formula.

[0076] floor(UE_ID / (N*Ns))mod W <W(0)+W(1)+…+W(n)

[0077] Where: W(i): weight of NB-IoT paging carrier i; W: sum of weights of all NB-IoT paging carriers, such as W = W(0) + W(1) + ... + W(Nn-1); mod means modulo operation, floor means flooring down.

[0078] 3. LTE eDRX mechanism

[0079] Considering that NB-IoT and eMTC terminal devices have relatively simple service types and low service activity, these terminal devices are in a disconnected state most of the time. At the same time, considering that the services of these terminal devices are not sensitive to latency requirements, in order to further save power for these terminal devices in the disconnected state, LTE introduced the eDRX mechanism for these terminal devices, which can support a larger Paging period, that is, a Paging period greater than 256 SFNs.

[0080] For terminal devices configured with eDRX, if the eDRX period of the terminal device is 512, the terminal device calculates its corresponding PO based on T=512. If the eDRX period of the terminal device is greater than or equal to one H-SFN (Hyper System Frame Number), the terminal device listens for P-RNTI scrambled PDCCH on its PO within the PTW (Paging Time Window) of one eDRX period. The PTW is terminal-specific and is determined by a start time point PTW_start and an end time point PTW_end within the PH (Paging Hyperframe).

[0081] PH is an H-SFN that satisfies the following condition: H-SFN mod TeDRX,H = (UE_ID_H mod TeDRX,H); where UE_ID_H is obtained based on the hash ID, TeDRX,H is the eDRX period in units of superframes, configured by AMF (Access and Mobility Management Function), and mod represents the modulo operation.

[0082] PTW_start is the starting radio frame number of PTW, which is the SFN that satisfies the following conditions: SFN = 256 * ieDRX; ieDRX = floor(UE_ID_H / TeDRX,H) mod 4; PTW_end is the ending radio frame number of PTW, which is the SFN that satisfies the following conditions: SFN = (PTW_start + L * 100 - 1) mod 1024; where L is the window length of PTW, which is configured by AMF, mod means modulo operation, and floor means floor round down.

[0083] 4. IoT NTN TDD (Time Division Duplex) mode

[0084] To enable IoT NTN to support a wider range of application scenarios, supporting NB-IoT FDD (Frequency Division Duplex) UEs to operate in NGEO (Non-Geostationary Earth Orbit) systems with a frequency range of 1616-1626.5MHz has been identified as a new research and standardization target. Currently, the 1616-1626.5MHz NTN frequency range is the operating frequency of Iridium satellites, which operate in TDD mode, as shown in Figure 2. This characteristic requires that NB-IoT FDD UEs operating at this frequency range can coexist with the current Iridium TDD mode. Therefore, the new NB-IoT NTN TDD mode ensures that the NB-IoT system has only D consecutively available downlink subframes and U consecutively available uplink subframes within every N radio frames.

[0085] In related technologies: N=9, D=U=8. Meanwhile, when the NB-IoT FDD UE operates in the 1.6GHz MSS (Maximum Segment Size) band, the standardized design must consider the following limitations:

[0086] 1. On the satellite side, all NB-IoT downlink channels or downlink signals within the cell can only use one downlink time slot in the 90ms period TDD frame structure, namely DL1, DL2, DL3, and DL4. Furthermore, the downlink time slot with the same number is used throughout all 90ms periods.

[0087] 2. On the satellite side, all NB-IoT uplink channels or downlink signals within the cell can only use one uplink time slot in the 90ms period TDD frame structure, namely UL1, UL2, UL3, and UL4. Furthermore, the same uplink time slot number is used for all 90ms.

[0088] 3. In the TDD frame structure, the downlink and uplink time slots available to the NB-IoT FDD UE correspond to the same number, namely DL1&UL1, DL2&UL2, DL3&UL3, or DL4&UL4.

[0089] When operating in the 1.6GHz MSS band, all downlink transmissions in an NB-IoT cell can only periodically use eight consecutive downlink subframes within 90ms. To adapt to the new TDD frame structure, an intuitive enhancement is to change the configuration period of all periodic downlink channels or signals to an integer multiple of 90ms. For paging, the current UE determines the DRX period (i.e., the period during which the UE listens for paging) based on three parameters: the default DRX period broadcast by the system, the UE-specific DRX period configured by the core network, and the minimum DRX period within the cell broadcast by the system. Based on the above principles, if a new DRX period value is introduced, then for cells operating in TDD mode, the access network device can broadcast the new default DRX period value and the minimum DRX period value within the cell broadcast by the system. However, for the UE-specific DRX period configured by the core network, both TDD-mode NTN cells and non-TDD-mode NTN cells may exist within the core network's jurisdiction. Since the UE may move between TDD-mode and non-TDD-mode cells, how to ensure that the UE can work normally (receive paging) in both types of cells is a problem that needs to be solved.

[0090] Please refer to Figure 3, which shows a flowchart of a paging method provided in one embodiment of this application. This method can be applied to the network architecture shown in Figure 1. The method may include the following step 310.

[0091] Step 310: The terminal device negotiates with the core network element to determine the first DRX cycle and / or the first eDRX cycle exclusive to the terminal device, wherein the first DRX cycle and / or the first eDRX cycle are applicable to cell paging terminal devices in TDD mode.

[0092] In some embodiments, the terminal device sends a request message to a core network element. Optionally, the request message carries the DRX period and / or eDRX period requested by the terminal device. After receiving the request message, the core network element sends a response message to the terminal device. Based on the response message, the terminal device determines a first DRX period and / or a first eDRX period specific to the terminal device.

[0093] In some embodiments, after receiving a request message, a core network element may decide whether to agree to designate the DRX cycle and / or eDRX cycle carried in the request message as a first DRX cycle and / or a first eDRX cycle specific to the terminal device. Optionally, the response message includes first indication information, which indicates whether to agree to designate the DRX cycle and / or eDRX cycle carried in the request message as a first DRX cycle and / or a first eDRX cycle specific to the terminal device. Optionally, the first indication information is 1 bit. For example, a first indication information of 1 indicates agreement to designate the DRX cycle and / or eDRX cycle carried in the request message as a first DRX cycle and / or a first eDRX cycle specific to the terminal device; a first indication information of 0 indicates disagreement to designate the DRX cycle and / or eDRX cycle carried in the request message as a first DRX cycle and / or a first eDRX cycle specific to the terminal device. Alternatively, a first indication of 0 indicates agreement to designate the DRX cycle and / or eDRX cycle carried in the request message as the terminal device's exclusive first DRX cycle and / or first eDRX cycle; a first indication of 1 indicates disagreement with designating the DRX cycle and / or eDRX cycle carried in the request message as the terminal device's exclusive first DRX cycle and / or first eDRX cycle. Optionally, the first indication is the first DRX cycle and / or the first eDRX cycle. For example, if the response message contains the first DRX cycle and / or the first eDRX cycle, it indicates agreement to designate the DRX cycle and / or eDRX cycle carried in the request message as the terminal device's exclusive first DRX cycle and / or first eDRX cycle; if the response message does not contain the first DRX cycle and / or the first eDRX cycle, it indicates disagreement with designating the DRX cycle and / or eDRX cycle carried in the request message as the terminal device's exclusive first DRX cycle and / or first eDRX cycle.

[0094] In some embodiments, if the core network element decides not to agree to determine the DRX period and / or eDRX period carried in the request message as the first DRX period and / or first eDRX period specific to the terminal device, the core network element may redetermine a new DRX period and / or eDRX period as the first DRX period and / or first eDRX period specific to the terminal device, and send a response message to the terminal device, the response message carrying the first DRX period and / or first eDRX period specific to the terminal device determined by the core network element.

[0095] In some embodiments, regardless of whether the core network element agrees to define the DRX period and / or eDRX period carried in the request message as the terminal device's exclusive first DRX period and / or first eDRX period, the response message sent by the core network element to the terminal device carries the terminal device's exclusive first DRX period and / or first eDRX period. That is, the terminal device's exclusive first DRX period and / or first eDRX period can be the DRX period and / or eDRX period carried in the request message, or it can be a new DRX period and / or eDRX period redefined by the core network element.

[0096] In some embodiments, the core network element is an AMF.

[0097] It should be understood that the DRX cycles and / or eDRX cycles involved in this application are all paging-related DRX cycles and / or eDRX cycles, that is, the DRX cycles and / or eDRX cycles used when sending and receiving paging messages using DRX and / or eDRX mechanisms.

[0098] In some embodiments, the terminal device-specific first DRX period and / or first eDRX period are applicable to paging terminal devices in TDD mode cells. The TDD mode cell is an NTN cell in TDD mode using the frame structure shown in Figure 2 above. After the terminal device and core network elements negotiate and determine the terminal device-specific first DRX period and / or first eDRX period, the terminal device can listen for paging messages sent by access network devices in the TDD mode cell based on the first DRX period and / or first eDRX period. Correspondingly, the access network devices in the TDD mode cell can send paging messages to the terminal device based on the first DRX period and / or first eDRX period.

[0099] In addition, the first DRX cycle and / or the first eDRX cycle dedicated to the terminal device are two independent parameters. That is, the terminal device and the core network element can negotiate and determine only the first DRX cycle dedicated to the terminal device, or only the first eDRX cycle dedicated to the terminal device, or both the first DRX cycle and the first eDRX cycle dedicated to the terminal device.

[0100] The technical solution provided in this application embodiment determines the first DRX cycle and / or the first eDRX cycle dedicated to the terminal device through negotiation between the terminal device and the core network element, enabling the terminal device to receive paging normally in a TDD mode cell and improving the reliability of paging.

[0101] The following section describes two scenarios where terminal equipment and core network elements negotiate and determine the DRX period and / or eDRX period.

[0102] Scenario 1: The terminal equipment negotiates and determines a DRX cycle and / or eDRX cycle with the core network element. This DRX cycle and / or eDRX cycle applies to both TDD mode cell paging terminal equipment and non-TDD mode cell paging terminal equipment.

[0103] In some embodiments, the first DRX cycle and / or the first eDRX cycle also apply to cell paging terminal equipment in non-TDD mode. That is, the first DRX cycle and / or the first eDRX cycle apply to both TDD and non-TDD cell paging terminal equipment. The first DRX cycle and / or the first eDRX cycle apply to both TDD and non-TDD cell paging terminal equipment.

[0104] In some embodiments, when the terminal device is camped in a TDD mode cell, the terminal device determines a third DRX cycle and / or a third eDRX cycle based on a first DRX cycle and / or a first eDRX cycle, wherein the third DRX cycle and / or the third eDRX cycle are DRX cycles and / or eDRX cycles that match the TDD mode. The terminal device then determines the PF and / or PO based on the third DRX cycle and / or the third eDRX cycle.

[0105] In some embodiments, since the frame structure corresponding to the TDD mode has a period of 90ms, the third DRX period and / or the third eDRX period are integer multiples of the first duration, which is 90ms or 9 radio frames. One radio frame equals 10ms. This allows the third DRX period and / or the third eDRX period to match the NTN TDD mode.

[0106] In some embodiments, for a DRX cycle, if the terminal device and the core network element negotiate and determine a terminal device-specific DRX cycle (denoted as UE-specific DRX value, i.e., the first DRX cycle), and the access network device configures the smallest terminal device-specific DRX cycle in the cell (denoted as ue-SpecificDRX-CycleMin) through system messages, then the terminal device can determine the third DRX cycle (denoted as T) based on any of the following formulas:

[0107] (1)T=min(default DRX value,max(floor(UE specific DRX value / 9)*9,ue-SpecificDRX-CycleMin));

[0108] (2)T=min(default DRX value,max(ceiling(UE specific DRX value / 9)*9,ue-SpecificDRX-CycleMin));

[0109] (3)T=floor(min(default DRX value,max(UE specific DRX value,ue-SpecificDRX-CycleMin)) / 9)*9;

[0110] (4) T = ceiling (min (default DRX value, max (floor(UE specific DRX value / 9)*9,ue-SpecificDRX-CycleMin)) / 9)*9;

[0111] Among them, the default DRX value is the default DRX cycle broadcast by the access network device through system messages; the UE specific DRX value is the UE-specific DRX cycle determined by the terminal device and the core network element through negotiation, which is also the first DRX cycle; ue-SpecificDRX-CycleMin is the smallest UE-specific DRX cycle in the cell configured by the access network device through system messages; the unit of the above three parameters is radio frames.

[0112] In some embodiments, for the eDRX cycle, the terminal device will convert the eDRX cycle (i.e., the first eDRX cycle) determined by negotiation with the core network element into an integer multiple of a superframe or an integer multiple of 90ms (or 9 radio frames) by rounding up or down, to obtain the third eDRX cycle.

[0113] In scenario 1, the terminal device and core network elements only need to negotiate and determine one DRX cycle and / or eDRX cycle, which applies to both TDD and non-TDD mode cells. When the terminal device is camped in a TDD mode cell, it can determine a DRX cycle and / or eDRX cycle that matches the TDD mode based on the negotiated DRX cycle and / or eDRX cycle, and determine the PF and / or PO based on this TDD mode-matched DRX cycle and / or eDRX cycle. When the terminal device is camped in a non-TDD mode cell, it can directly determine the PF and / or PO based on the negotiated DRX cycle and / or eDRX cycle, or it can determine a DRX cycle and / or eDRX cycle that does not match the TDD mode based on the negotiated DRX cycle and / or eDRX cycle, and determine the PF and / or PO based on this non-TDD mode-matched DRX cycle and / or eDRX cycle. Using this method, terminal devices that support TDD mode can receive paging normally in both TDD and non-TDD mode cells without frequently changing the terminal device's proprietary DRX cycle and / or eDRX cycle configuration.

[0114] Scenario 2: The terminal equipment negotiates with the core network element to determine two DRX cycles and / or eDRX cycles, one of which is applicable to cell paging terminal equipment in TDD mode, and the other is applicable to cell paging terminal equipment in non-TDD mode.

[0115] In some embodiments, the terminal device negotiates with the core network element to determine a second DRX cycle and / or a second eDRX cycle specific to the terminal device, wherein the second DRX cycle and / or the second eDRX cycle are applicable to cell paging terminal devices in non-TDD mode.

[0116] In scenario 2, the first DRX cycle and / or the first eDRX cycle apply only to cell paging terminal equipment in TDD mode, but not to cell paging terminal equipment in non-TDD mode. The second DRX cycle and / or the second eDRX cycle apply only to cell paging terminal equipment in non-TDD mode, but not to cell paging terminal equipment in TDD mode.

[0117] In some embodiments, the DRX period and / or eDRX period are negotiated and determined based on the terminal device's support for TDD mode cells and non-TDD mode cells.

[0118] Optionally, if the terminal device only supports cells operating in TDD mode, the terminal device and the core network element negotiate to determine the first DRX cycle and / or the first eDRX cycle.

[0119] Optionally, if the terminal device only supports cells operating in non-TDD mode, the terminal device and the core network element negotiate to determine the second DRX cycle and / or the second eDRX cycle.

[0120] Optionally, if the terminal device supports cells operating in TDD mode and cells operating in non-TDD mode, the terminal device and the core network element negotiate to determine the first DRX cycle and / or the first eDRX cycle, as well as the second DRX cycle and / or the second eDRX cycle.

[0121] In some embodiments, since the frame structure corresponding to the TDD mode has a period of 90ms, the first DRX period and / or the first eDRX period applicable to the TDD mode are integer multiples of the first duration, which is 90ms or 9 radio frames. One radio frame equals 10ms. This allows the first DRX period and / or the first eDRX period to match the NTN TDD mode.

[0122] In some embodiments, when the terminal device is camped in a TDD mode cell, the terminal device and the access network device corresponding to the TDD mode cell determine the PF and / or PO based on a first DRX cycle and / or a first eDRX cycle. When the terminal device is camped in a non-TDD mode cell, the terminal device and the access network device corresponding to the non-TDD mode cell determine the PF and / or PO based on a second DRX cycle and / or a second eDRX cycle.

[0123] In scenario 2, the terminal device and core network elements negotiate and determine two DRX cycles and / or eDRX cycles. One DRX cycle and / or eDRX cycle applies to paging terminal devices in TDD mode cells, and the other DRX cycle and / or eDRX cycle applies to paging terminal devices in non-TDD mode cells. When the terminal device is camped in a TDD mode cell, it can determine the PF and / or PO based on the first DRX cycle and / or the first eDRX cycle. When the terminal device is camped in a non-TDD mode cell, it can determine the PF and / or PO based on the second DRX cycle and / or the second eDRX cycle. Using this method, terminal devices supporting TDD mode can receive paging normally in both TDD and non-TDD mode cells without frequently changing the terminal device's specific DRX cycle and / or eDRX cycle configuration.

[0124] In addition, in cases 1 and 2 above, the method by which the terminal equipment and access network equipment determine the PF and / or PO based on the DRX cycle and / or eDRX cycle can be found in the descriptions in "LTE paging mechanism" and "LTE eDRX mechanism" above, and will not be repeated here.

[0125] In some embodiments, the terminal device sends first capability information to the access network device. The first capability information indicates whether the terminal device supports cells operating in TDD mode, or whether the terminal device supports paging based on TDD mode. Correspondingly, the access network device receives the first capability information sent by the terminal device. By reporting the first capability information to the access network device, the access network device can determine whether the terminal device supports cells operating in TDD mode. If the terminal device supports cells operating in TDD mode, it indicates that the terminal device supports paging based on TDD mode.

[0126] In some embodiments, the access network device sends first information. The terminal device receives the first information sent by the access network device. The first information indicates whether the cell corresponding to the access network device is operating in TDD mode, or whether the cell corresponding to the access network device allows terminal devices supporting TDD mode to access. Based on the first information, the terminal device determines whether to camp in the cell corresponding to the access network device. If the cell corresponding to the access network device is operating in TDD mode, it means that the cell corresponding to the access network device allows terminal devices supporting TDD mode to access.

[0127] Optionally, if the terminal device supports a cell operating in TDD mode, and the first information indicates that the cell corresponding to the access network device operates in TDD mode, or the first information indicates that the cell corresponding to the access network device allows terminal devices supporting TDD mode to access, the terminal device determines to camp in the cell corresponding to the access network device.

[0128] Optionally, if the terminal device supports a cell operating in TDD mode, but the first information indicates that the cell corresponding to the access network device operates in non-TDD mode, or the first information indicates that the cell corresponding to the access network device does not allow terminal devices supporting TDD mode to access, the terminal device may determine not to camp in the cell corresponding to the access network device, or the terminal device may camp in the cell corresponding to the access network device in non-TDD mode.

[0129] In some embodiments, when the terminal device determines that it is camped in the cell corresponding to the access network device, the terminal device ignores the first access prohibition information and / or the second access prohibition information in the system message. The first access prohibition information indicates whether to prohibit access by the terminal device in the TN system, and the second access prohibition information indicates whether to prohibit access by the terminal device in the NTN system. Optionally, the first access prohibition information may be carried in the MIB (Master Information Block). Optionally, the second access prohibition information may be carried in the SIB1 (System Information Block).

[0130] This application also provides a terminal access control method in an NTN TDD system. Using this method, terminal devices that do not support TDD mode can avoid NTN cells in TDD mode, thus preventing these terminal devices from mistakenly accessing TDD mode cells and being unable to receive normal services.

[0131] Please refer to Figure 4, which shows a flowchart of a paging method provided in another embodiment of this application. This method can be applied to the network architecture shown in Figure 1. The method may include the following step 410.

[0132] Step 410: The access network device pages the terminal device based on the terminal device’s exclusive first DRX cycle and / or first eDRX cycle, wherein the first DRX cycle and / or first eDRX cycle is applicable to the cell paging terminal device in TDD mode.

[0133] For details regarding the first DRX cycle and / or the first eDRX cycle, please refer to the embodiments above.

[0134] Case 1: The first DRX cycle and / or the first eDRX cycle are applicable to both TDD and non-TDD cell paging terminal devices.

[0135] In scenario 1, when the cell corresponding to the access network device operates in TDD mode, the access network device determines the third DRX period and / or the third eDRX period based on the first DRX period and / or the first eDRX period. The third DRX period and / or the third eDRX period are DRX periods and / or eDRX periods that match the TDD mode. Optionally, the third DRX period and / or the third eDRX period are integer multiples of the first duration, which is 90ms or 9 radio frames. The access network device determines the PF and / or PO based on the third DRX period and / or the third eDRX period. The method by which the access network device determines the third DRX period and / or the third eDRX period based on the first DRX period and / or the first eDRX period is the same as the method described above for the terminal device to determine the third DRX period and / or the third eDRX period based on the first DRX period and / or the first eDRX period, and will not be repeated here. The way access network equipment determines PF and / or PO based on the third DRX cycle and / or the third eDRX cycle is the same as the way terminal equipment determines PF and / or PO based on the third DRX cycle and / or the third eDRX cycle.

[0136] Scenario 2: The first DRX cycle and / or the first eDRX cycle are only applicable to cell paging terminal equipment in TDD mode. The terminal equipment also has a terminal equipment-specific second DRX cycle and / or second eDRX cycle, which are applicable to cell paging terminal equipment in non-TDD mode.

[0137] In case 2, the first DRX period and / or the first eDRX period is an integer multiple of the first duration, which is 90ms or 9 radio frames.

[0138] In scenario 2, when the cell corresponding to the access network device is operating in TDD mode, the access network device pages the terminal device based on the terminal device's dedicated first DRX cycle and / or first eDRX cycle. When the cell corresponding to the access network device is operating in non-TDD mode, the access network device pages the terminal device based on the terminal device's dedicated second DRX cycle and / or second eDRX cycle.

[0139] The above method enables terminal devices that support TDD mode to receive paging normally in both TDD and non-TDD cell modes without frequently changing the terminal device's proprietary DRX cycle and / or eDRX cycle configuration.

[0140] Please refer to Figure 5, which shows a flowchart of a paging method provided in another embodiment of this application. This method can be applied to the network architecture shown in Figure 1. The method may include the following step 510.

[0141] Step 510: The core network element and the terminal equipment negotiate to determine the first DRX cycle and / or the first eDRX cycle exclusive to the terminal equipment, wherein the first DRX cycle and / or the first eDRX cycle are applicable to cell paging terminal equipment in TDD mode.

[0142] For details regarding the first DRX cycle and / or the first eDRX cycle, please refer to the embodiments above.

[0143] Case 1: The first DRX cycle and / or the first eDRX cycle are applicable to both TDD and non-TDD cell paging terminal devices.

[0144] In scenario 1, the first DRX cycle and / or the first eDRX cycle are used to determine the third DRX cycle and / or the third eDRX cycle, wherein the third DRX cycle and / or the third eDRX cycle are DRX cycles and / or eDRX cycles that match the TDD mode, and the third DRX cycle and / or the third eDRX cycle are used to determine the PF and / or PO for the terminal device. Optionally, the third DRX cycle and / or the third eDRX cycle is an integer multiple of a first duration, where the first duration is 90ms or 9 radio frames.

[0145] Scenario 2: The first DRX cycle and / or the first eDRX cycle are only applicable to cell paging terminal equipment in TDD mode.

[0146] In case 2, the core network element can also negotiate with the terminal equipment to determine the second DRX cycle and / or the second eDRX cycle exclusive to the terminal equipment. The second DRX cycle and / or the second eDRX cycle are applicable to cell paging terminal equipment in non-TDD mode.

[0147] Optionally, if the terminal device only supports cells operating in TDD mode, the terminal device and the core network element negotiate to determine the first DRX cycle and / or the first eDRX cycle.

[0148] Optionally, if the terminal device only supports cells operating in non-TDD mode, the terminal device and the core network element negotiate to determine the second DRX cycle and / or the second eDRX cycle.

[0149] Optionally, if the terminal device supports cells operating in TDD mode and cells operating in non-TDD mode, the terminal device and the core network element negotiate to determine the first DRX cycle and / or the first eDRX cycle, as well as the second DRX cycle and / or the second eDRX cycle.

[0150] In some embodiments, since the frame structure corresponding to the TDD mode has a period of 90ms, for case 2, the first DRX period and / or the first eDRX period applicable to the TDD mode are integer multiples of the first duration, which is 90ms or 9 radio frames. This allows the first DRX period and / or the first eDRX period to match the NTN TDD mode.

[0151] The above method enables terminal devices that support TDD mode to receive paging normally in both TDD and non-TDD cell modes without frequently changing the terminal device's proprietary DRX cycle and / or eDRX cycle configuration.

[0152] The following describes how to determine whether to page a specific terminal device.

[0153] Method 1: For paging a specific terminal device, the access network device decides whether to paging the terminal device.

[0154] In some embodiments, the access network device receives a paging message for a terminal device sent by a core network element. The access network device determines whether to initiate a paging request for the terminal device based on the terminal device's capabilities, wherein the terminal device's capabilities indicate whether the terminal device supports cells operating in TDD mode, or whether the terminal device supports paging based on TDD mode.

[0155] When a core network element needs to page a terminal device, the core network element sends a paging message for that terminal device to the access network device. Optionally, the paging message for the terminal device carries the terminal device's unique DRX period and / or eDRX period. Optionally, the paging message for the terminal device carries the terminal device's first capability information. Optionally, the paging message for the terminal device carries the terminal device's unique DRX period and / or eDRX period, as well as the terminal device's first capability information.

[0156] In case 1 above, since the first DRX cycle and / or the first eDRX cycle are applicable to both TDD and non-TDD cell paging terminal devices, the DRX cycle and / or eDRX cycle specific to the terminal device carried in the paging message for the terminal device are the first DRX cycle and / or the first eDRX cycle specific to the terminal device.

[0157] For scenario 2 above, the terminal device's dedicated DRX cycle and / or eDRX cycle may include: a first DRX cycle and / or a first eDRX cycle specific to the terminal device, and / or a second DRX cycle and / or a second eDRX cycle specific to the terminal device. Therefore, if the core network element and the terminal device only negotiate and determine the first DRX cycle and / or the first eDRX cycle specific to the terminal device, then the paging message for the terminal device will carry the first DRX cycle and / or the first eDRX cycle specific to the terminal device. If the core network element and the terminal device only negotiate and determine the second DRX cycle and / or the second eDRX cycle specific to the terminal device, then the paging message for the terminal device will carry the second DRX cycle and / or the second eDRX cycle specific to the terminal device. If the core network element and the terminal equipment negotiate and determine the first DRX cycle and / or the first eDRX cycle, as well as the second DRX cycle and / or the second eDRX cycle exclusive to the terminal equipment, then the paging message for the terminal equipment carries the DRX cycle and / or eDRX cycle exclusive to the terminal equipment, including the first DRX cycle and / or the first eDRX cycle, as well as the second DRX cycle and / or the second eDRX cycle.

[0158] When the cell corresponding to the access network device operates in TDD mode, the access network device determines whether to initiate a paging request to the terminal device based on the terminal device's capabilities. Optionally, if the terminal device's capabilities indicate that it supports cells operating in TDD mode, or that it supports paging based on TDD mode, then the access network device initiates a paging request to the terminal device. Optionally, if the terminal device's capabilities indicate that it does not support cells operating in TDD mode, or that it does not support paging based on TDD mode, then the access network device does not initiate a paging request to the terminal device.

[0159] In some embodiments, the capabilities of a terminal device are determined based on first capability information of the terminal device. This first capability information indicates whether the terminal device supports operation in a TDD mode cell, or whether it supports paging based on TDD mode. Optionally, the paging message sent by the core network element to the access network device for the terminal device carries the first capability information of the terminal device. The access network device can determine the capabilities of the terminal device based on the first capability information carried in the paging message. This method applies to scenarios 1 and 2 described above.

[0160] In some embodiments, the capabilities of a terminal device are determined based on its own DRX and / or eDRX cycles. Optionally, the paging message sent by the core network element to the access network device for the terminal device carries all the terminal device's own DRX and / or eDRX cycles, negotiated and determined by the core network element and the terminal device. Optionally, if the terminal device's own DRX and / or eDRX cycles include a first DRX and / or a first eDRX cycle, the terminal device's capabilities support cells operating in TDD mode, or support paging based on TDD mode. If the terminal device's own DRX and / or eDRX cycles do not include the first DRX and / or the first eDRX cycle, the terminal device's capabilities do not support cells operating in TDD mode, or do not support paging based on TDD mode. This approach applies to case 2 above.

[0161] Using the above method 1, paging of a specific terminal device is achieved by allowing the access network device to decide whether to paging the terminal device.

[0162] Method 2: For paging of a specific terminal device, the core network element decides whether to paging the terminal device.

[0163] In some embodiments, the core network element determines whether to send a paging message to the access network device for the terminal device based on the capabilities of the terminal device and the access network device. The capabilities of the terminal device indicate whether it supports cells operating in TDD mode, or whether it supports paging based on TDD mode. The capabilities of the access network device indicate whether the cell corresponding to the access network device operates in TDD mode, or whether the cell corresponding to the access network device allows access for terminal devices supporting TDD mode.

[0164] Optionally, the access network device sends second information to the core network element. Correspondingly, the core network element receives the second information sent by the access network device. The second information indicates whether the cell corresponding to the access network device is operating in TDD mode, or whether the cell corresponding to the access network device allows terminal devices supporting TDD mode to access. That is, through the second information, the access network device reports its own capabilities to the core network element, so that when the core network element needs to page a terminal device, it can determine whether to send a paging message to the access network device based on the capabilities of the terminal device and the access network device.

[0165] In some embodiments, when the cell corresponding to the access network device operates in TDD mode and the terminal device supports cells operating in TDD mode, or when the terminal device supports paging based on TDD mode, the core network element sends a paging message for the terminal device to the access network device.

[0166] In some embodiments, when the cell corresponding to the access network device is operating in TDD mode and the terminal device does not support cells operating in TDD mode, or the terminal device does not support paging based on TDD mode, the core network element does not send paging messages for the terminal device to the access network device, thereby avoiding invalid paging.

[0167] In some embodiments, the capabilities of the terminal device are determined based on first capability information of the terminal device, which indicates whether the terminal device supports a cell operating in TDD mode, or whether the terminal device supports paging based on TDD mode.

[0168] In some embodiments, the capabilities of the terminal device are determined based on terminal device-specific DRX cycles and / or eDRX cycles. Optionally, if the terminal device-specific DRX cycles and / or eDRX cycles include a first DRX cycle and / or a first eDRX cycle, the terminal device's capabilities support cells operating in TDD mode, or support paging based on TDD mode. If the terminal device-specific DRX cycles and / or eDRX cycles do not include the first DRX cycle and / or the first eDRX cycle, the terminal device's capabilities do not support cells operating in TDD mode, or do not support paging based on TDD mode.

[0169] Using method 2 described above, paging of a specific terminal device is achieved by allowing the core network element to decide whether to paging the terminal device.

[0170] Please refer to Figure 6, which shows a flowchart of a paging method provided in another embodiment of this application. This method can be applied to the network architecture shown in Figure 1. The method may include at least one of the following steps 610 to 670.

[0171] Step 610: The terminal device negotiates with the core network element to determine the first DRX cycle and / or the first eDRX cycle dedicated to the terminal device. The first DRX cycle and / or the first eDRX cycle are applicable to both TDD mode and non-TDD mode cell paging terminal devices.

[0172] Optionally, the TDD mode cell is an NTN cell using the TDD mode with the frame structure shown in Figure 2 above.

[0173] Step 620: The terminal device sends first capability information to the access network device. The first capability information is used to indicate whether the terminal device supports cells operating in TDD mode, or the first capability information is used to indicate whether the terminal device supports paging based on TDD mode.

[0174] Optionally, the first capability information can be a 1-bit indication. Optionally, the first capability information can be included in the UE radio paging information (such as ue-RadioPagingInfo IE).

[0175] Step 630: The access network device sends the first capability information of the terminal device to the core network element.

[0176] Optionally, the core network element stores the dedicated DRX cycle and / or eDRX cycle of the terminal device (i.e., the aforementioned first DRX cycle and / or first eDRX cycle) and the first capability information of the terminal device.

[0177] Steps 640-650 describe how to determine whether to page a specific terminal device. Methods 1 and 2, as described above, are used.

[0178] For method 1, steps 640-650 are as follows:

[0179] Step 640: When a core network element needs to page a terminal device, the core network element sends a paging message for the terminal device to the access network device. The paging message carries the terminal device's unique DRX cycle and / or eDRX cycle, as well as the terminal device's first capability information.

[0180] Step 650: For a cell operating in TDD mode, the access network device determines whether to initiate a paging request to the terminal device based on the terminal device's first capability information.

[0181] Optionally, if the first capability information of the terminal device indicates that the terminal device supports a cell operating in TDD mode, or indicates that the terminal device supports paging based on TDD mode, then the access network device determines to initiate paging to the terminal device; otherwise, if the first capability information of the terminal device indicates that the terminal device does not support a cell operating in TDD mode, or indicates that the terminal device does not support paging based on TDD mode, then the access network device determines not to initiate paging to the terminal device.

[0182] For method 2, steps 640-650 are as follows:

[0183] Step 640: The access network device sends second information to the core network element. The second information is used to indicate whether the cell corresponding to the access network device is operating in TDD mode, or to indicate whether the cell corresponding to the access network device allows terminal devices that support TDD mode to access.

[0184] Step 650: When a core network element needs to page a terminal device, the core network element determines whether to send a paging message for the terminal device to the access network device based on the terminal device's first capability information and the second information sent by the access network device.

[0185] Optionally, if the second information indicates that the cell corresponding to the access network device is operating in TDD mode, or indicates that the cell corresponding to the access network device allows terminal devices that support TDD mode to access, and the first capability information indicates that the terminal device supports cells operating in TDD mode, or indicates that the terminal device supports paging based on TDD mode, then the core network element sends a paging message for the terminal device to the access network device.

[0186] Optionally, if the second information indicates that the cell corresponding to the access network device is operating in TDD mode, or indicates that the cell corresponding to the access network device allows terminal devices that support TDD mode to access, and the first capability information indicates that the terminal device does not support the cell operating in TDD mode, or indicates that the terminal device does not support paging based on TDD mode, then the core network element will not send a paging message for the terminal device to the access network device.

[0187] Step 660: For an access network device operating in TDD mode, the access network device sends a first message indicating that the access network device is operating in TDD mode, or indicating that terminal devices supporting TDD mode are allowed to access.

[0188] Optionally, the first information is sent in a system message.

[0189] Step 670: For a terminal device camped in a TDD mode cell, the terminal device determines a third DRX cycle and / or a third eDRX cycle based on the first DRX cycle and / or the first eDRX cycle, and determines PF and / or PO based on the third DRX cycle and / or the third eDRX cycle; wherein the third DRX cycle and / or the third eDRX cycle are DRX cycles and / or eDRX cycles that match the TDD mode.

[0190] Optionally, the third DRX cycle and / or the third eDRX cycle is an integer multiple of the first duration, which is 90ms or 9 radio frames.

[0191] The methods for determining the third DRX cycle and / or the third eDRX cycle are described above and will not be repeated here. Furthermore, the methods by which access network equipment determines the PF and / or PO are the same as those used by terminal equipment.

[0192] In this embodiment, the terminal device negotiates with the core network elements to determine a terminal-specific DRX period and / or eDRX period. This terminal-specific DRX period and / or eDRX period applies to both TDD-mode and non-TDD-mode cells. In TDD-mode supported cells, the terminal device calculates a DRX period and / or eDRX period that matches the TDD period based on the dedicated DRX period and / or eDRX period, and listens for paging based on the calculated DRX period and / or eDRX period. Using this method, terminal devices supporting TDD mode can receive paging normally in both TDD-mode and non-TDD-mode cells without frequently changing the terminal-specific DRX period and / or eDRX period configuration.

[0193] Please refer to Figure 7, which shows a flowchart of a paging method provided in another embodiment of this application. This method can be applied to the network architecture shown in Figure 1. The method may include at least one of the following steps 710 to 770.

[0194] Step 710: The terminal equipment and the core network elements negotiate and determine the terminal equipment's own DRX cycle and / or eDRX cycle for TDD mode cells and non-TDD mode cells, respectively.

[0195] In some embodiments, the DRX period and / or eDRX period are negotiated and determined based on the terminal device's support for TDD mode cells and non-TDD mode cells.

[0196] Optionally, if the terminal device only supports cells operating in TDD mode, the terminal device and the core network element negotiate to determine the first DRX cycle and / or the first eDRX cycle.

[0197] Optionally, if the terminal device only supports cells operating in non-TDD mode, the terminal device and the core network element negotiate to determine the second DRX cycle and / or the second eDRX cycle.

[0198] Optionally, if the terminal device supports cells operating in TDD mode and cells operating in non-TDD mode, the terminal device and the core network element negotiate to determine the first DRX cycle and / or the first eDRX cycle, as well as the second DRX cycle and / or the second eDRX cycle.

[0199] The aforementioned first DRX cycle and / or first eDRX cycle apply only to cell paging terminal equipment in TDD mode. The second DRX cycle and / or second eDRX cycle apply only to cell paging terminal equipment in non-TDD mode.

[0200] Optionally, the TDD mode cell is an NTN cell using the TDD mode with the frame structure shown in Figure 2 above.

[0201] Optionally, the first DRX period and / or the first eDRX period is an integer multiple of the first duration, which is 90ms or 9 radio frames.

[0202] Step 720: The terminal device sends first capability information to the access network device. The first capability information is used to indicate whether the terminal device supports cells operating in TDD mode, or the first capability information is used to indicate whether the terminal device supports paging based on TDD mode.

[0203] Optionally, the first capability information can be a 1-bit indication. Optionally, the first capability information can be included in the UE radio paging information (such as ue-RadioPagingInfo IE).

[0204] Step 730: The access network device sends the first capability information of the terminal device to the core network element.

[0205] Optionally, the core network element stores the dedicated DRX cycle and / or eDRX cycle of the terminal device, as well as the first capability information of the terminal device. The dedicated DRX cycle and / or eDRX cycle of the terminal device includes at least one of the first DRX cycle and / or first eDRX cycle, the second DRX cycle and / or second eDRX cycle determined above through negotiation.

[0206] Steps 740-750 describe how to determine whether to page a specific terminal device. Methods 1 and 2, as described above, are used.

[0207] For method 1, steps 740-750 are as follows:

[0208] Step 740: When a core network element needs to page a terminal device, the core network element sends a paging message for the terminal device to the access network device. The paging message carries at least one of the following: the terminal device's unique DRX cycle and / or eDRX cycle, and the terminal device's first capability information.

[0209] Step 750: For cells operating in TDD mode, the access network device determines whether to initiate a paging request to the terminal device based on the terminal device's capabilities.

[0210] Optionally, if the paging message received from the core network element in step 740 carries the terminal device's exclusive DRX cycle and / or eDRX cycle for TDD mode (i.e., the first DRX cycle and / or the first eDRX cycle), the access network device determines to initiate paging to the terminal device; otherwise, if the paging message received from the core network element in step 740 does not carry the terminal device's exclusive DRX cycle and / or eDRX cycle for TDD mode (i.e., the first DRX cycle and / or the first eDRX cycle), the access network device determines not to initiate paging to the terminal device.

[0211] Optionally, if the first capability information of the terminal device indicates that the terminal device supports a cell operating in TDD mode, or indicates that the terminal device supports paging based on TDD mode, then the access network device determines to initiate paging to the terminal device; otherwise, if the first capability information of the terminal device indicates that the terminal device does not support a cell operating in TDD mode, or indicates that the terminal device does not support paging based on TDD mode, then the access network device determines not to initiate paging to the terminal device.

[0212] For method 2, steps 740-750 are as follows:

[0213] Step 740: The access network device sends second information to the core network element. The second information is used to indicate whether the cell corresponding to the access network device is operating in TDD mode, or to indicate whether the cell corresponding to the access network device allows terminal devices that support TDD mode to access.

[0214] Step 750: When a core network element needs to page a terminal device, the core network element determines whether to send a paging message for the terminal device to the access network device based on the capabilities of the terminal device and the second information sent by the access network device.

[0215] Optionally, if the second information indicates that the cell corresponding to the access network device is operating in TDD mode, or indicates that the cell corresponding to the access network device allows terminal devices supporting TDD mode to access, and the terminal device's dedicated DRX cycle and / or eDRX cycle includes the first DRX cycle and / or the first eDRX cycle, then the core network element sends a paging message for the terminal device to the access network device. Optionally, if the second information indicates that the cell corresponding to the access network device is operating in TDD mode, or indicates that the cell corresponding to the access network device allows terminal devices supporting TDD mode to access, and the terminal device's dedicated DRX cycle and / or eDRX cycle does not include the first DRX cycle and / or the first eDRX cycle, then the core network element does not send a paging message for the terminal device to the access network device.

[0216] Optionally, if the second information indicates that the cell corresponding to the access network device is operating in TDD mode, or indicates that the cell corresponding to the access network device allows terminal devices supporting TDD mode to access, and the first capability information indicates that the terminal device supports cells operating in TDD mode, or indicates that the terminal device supports paging based on TDD mode, then the core network element sends a paging message for the terminal device to the access network device. Optionally, if the second information indicates that the cell corresponding to the access network device is operating in TDD mode, or indicates that the cell corresponding to the access network device allows terminal devices supporting TDD mode to access, and the first capability information indicates that the terminal device does not support cells operating in TDD mode, or indicates that the terminal device does not support paging based on TDD mode, then the core network element does not send a paging message for the terminal device to the access network device.

[0217] Step 760: For an access network device operating in TDD mode, the access network device sends a first message indicating that the access network device is operating in TDD mode, or indicating that terminal devices supporting TDD mode are allowed to access.

[0218] Optionally, the first information is sent in a system message.

[0219] Step 770: When the cell where the terminal device is currently camped is operating in TDD mode, the terminal device determines the PF and / or PO based on the first DRX cycle and / or the first eDRX cycle; when the cell where the terminal device is currently camped is operating in non-TDD mode, the terminal device determines the PF and / or PO based on the second DRX cycle and / or the second eDRX cycle.

[0220] In addition, the access network equipment determines the PF and / or PO in the same way as the terminal equipment.

[0221] In this embodiment, the terminal device and core network elements negotiate to determine two terminal-specific DRX periods and / or eDRX periods. These two values ​​are applicable to TDD-mode cells and non-TDD-mode cells, respectively. The terminal device determines the terminal-specific DRX period and / or eDRX period to use in the cell based on whether the current cell is operating in TDD mode or non-TDD mode. Using this method, terminal devices supporting TDD mode can receive paging normally in both TDD-mode and non-TDD-mode cells without frequently changing the terminal-specific DRX period and / or eDRX period configuration.

[0222] It should be noted that, in the above method embodiments, the steps executed by the terminal device can be implemented independently as a paging method on the terminal device side; the steps executed by the access network device can be implemented independently as a paging method on the access network device side; and the steps executed by the core network element can be implemented independently as a paging method on the core network element side. Furthermore, the various embodiments of this application can be arbitrarily combined to form new embodiments, all of which are within the protection scope of this application.

[0223] The following are embodiments of the apparatus described in this application, which can be used to execute the embodiments of the method described in this application. For details not disclosed in the apparatus embodiments of this application, please refer to the embodiments of the method described in this application.

[0224] Please refer to Figure 8, which shows a block diagram of a paging device according to an embodiment of this application. This device has the function of implementing the paging method described above on the terminal device side. This function can be implemented in hardware or by hardware executing corresponding software. The device can be the terminal device described above, or it can be disposed within a terminal device. As shown in Figure 8, the device 800 may include a communication module 810.

[0225] The communication module 810 is used to negotiate with the core network element to determine a first DRX cycle and / or a first eDRX cycle specific to the terminal device, wherein the first DRX cycle and / or the first eDRX cycle is applicable to cell paging of the terminal device in TDD mode.

[0226] In some embodiments, the first DRX cycle and / or the first eDRX cycle are also applicable to cell paging of the terminal device in non-TDD mode.

[0227] In some embodiments, as shown in FIG8, the apparatus 800 further includes a processing module 820, configured to, when the terminal device is camped in a cell of the TDD mode, determine a third DRX period and / or a third eDRX period based on the first DRX period and / or the first eDRX period, wherein the third DRX period and / or the third eDRX period is a DRX period and / or an eDRX period that matches the TDD mode; and determine a paging frame PF and / or a paging timing PO based on the third DRX period and / or the third eDRX period.

[0228] In some embodiments, the third DRX period and / or the third eDRX period is an integer multiple of the first duration, which is 90ms or 9 radio frames.

[0229] In some embodiments, the communication module 810 is further configured to negotiate with the core network element to determine a second DRX cycle and / or a second eDRX cycle specific to the terminal device, wherein the second DRX cycle and / or the second eDRX cycle is applicable to paging the terminal device in a non-TDD mode cell.

[0230] In some embodiments, when the terminal device only supports cells operating in the TDD mode, the terminal device and the core network element negotiate to determine the first DRX period and / or the first eDRX period; or, when the terminal device only supports cells operating in the non-TDD mode, the terminal device and the core network element negotiate to determine the second DRX period and / or the second eDRX period; or, when the terminal device supports cells operating in both the TDD mode and the non-TDD mode, the terminal device and the core network element negotiate to determine the first DRX period and / or the first eDRX period, as well as the second DRX period and / or the second eDRX period.

[0231] In some embodiments, the first DRX period and / or the first eDRX period is an integer multiple of a first duration, wherein the first duration is 90ms or 9 radio frames.

[0232] In some embodiments, as shown in FIG8, the apparatus 800 further includes a processing module 820, configured to determine PF and / or PO based on the first DRX cycle and / or the first eDRX cycle when the terminal device is camped in the TDD mode cell; or, configured to determine PF and / or PO based on the second DRX cycle and / or the second eDRX cycle when the terminal device is camped in the non-TDD mode cell.

[0233] In some embodiments, the communication module 810 is further configured to send first capability information to the access network device, the first capability information being used to indicate whether the terminal device supports operating in the TDD mode cell, or the first capability information being used to indicate whether the terminal device supports paging based on the TDD mode.

[0234] In some embodiments, the communication module 810 is further configured to receive first information sent by the access network device, the first information being used to indicate whether the cell corresponding to the access network device is operating in the TDD mode, or the first information being used to indicate whether the cell corresponding to the access network device allows terminal devices supporting the TDD mode to access. In some embodiments, as shown in FIG8, the device 800 further includes a processing module 820, configured to determine whether to reside in the cell corresponding to the access network device based on the first information.

[0235] In some embodiments, the processing module 820 is configured to determine that the terminal device resides in the cell corresponding to the access network device when the terminal device supports a cell operating in the TDD mode, and the first information indicates that the cell corresponding to the access network device operates in the TDD mode, or the first information indicates that the cell corresponding to the access network device allows terminal devices supporting the TDD mode to access.

[0236] In some embodiments, the terminal device ignores the first access prohibition information and / or the second access prohibition information in the system message, wherein the first access prohibition information is used to indicate whether to prohibit the terminal device in the terrestrial network TN system from accessing, and the second access prohibition information is used to indicate whether to prohibit the terminal device in the non-terrestrial network NTN system from accessing.

[0237] Please refer to Figure 9, which shows a block diagram of a paging device according to another embodiment of this application. This device has the function of implementing the paging method described above on the access network device side. This function can be implemented in hardware or by hardware executing corresponding software. The device can be the access network device described above, or it can be disposed within the access network device. As shown in Figure 9, the device 900 may include a processing module 910.

[0238] The processing module 910 is used to page the terminal device based on a first DRX cycle and / or a first eDRX cycle specific to the terminal device, wherein the first DRX cycle and / or the first eDRX cycle is applicable to paging the terminal device in a TDD mode cell.

[0239] In some embodiments, the first DRX cycle and / or the first eDRX cycle are also applicable to cell paging of the terminal device in non-TDD mode.

[0240] In some embodiments, the processing module 910 is configured to, when the cell corresponding to the access network device is operating in the TDD mode, determine a third DRX period and / or a third eDRX period based on the first DRX period and / or the first eDRX period, wherein the third DRX period and / or the third eDRX period is a DRX period and / or an eDRX period that matches the TDD mode; and determine a paging frame PF and / or a paging timing PO based on the third DRX period and / or the third eDRX period.

[0241] In some embodiments, the third DRX period and / or the third eDRX period is an integer multiple of the first duration, which is 90ms or 9 radio frames.

[0242] In some embodiments, the terminal device further includes a second DRX cycle and / or a second eDRX cycle specific to the terminal device, wherein the second DRX cycle and / or the second eDRX cycle are applicable to paging the terminal device in a non-TDD mode cell.

[0243] In some embodiments, the first DRX period and / or the first eDRX period is an integer multiple of a first duration, wherein the first duration is 90ms or 9 radio frames.

[0244] In some embodiments, the processing module 910 is configured to, when the cell corresponding to the access network device is operating in the TDD mode, page the terminal device based on a first DRX cycle and / or a first eDRX cycle specific to the terminal device; and when the cell corresponding to the access network device is operating in the non-TDD mode, page the terminal device based on a second DRX cycle and / or a second eDRX cycle.

[0245] In some embodiments, as shown in FIG9, the device 900 further includes a communication module 920, configured to receive a paging message for the terminal device sent by a core network element. The processing module 910 is further configured to determine whether to initiate a paging request to the terminal device based on the capabilities of the terminal device, wherein the capabilities of the terminal device are used to indicate whether the terminal device supports operation in the TDD mode cell, or to indicate whether the terminal device supports paging based on the TDD mode.

[0246] In some embodiments, the capabilities of the terminal device are determined based on first capability information of the terminal device, the first capability information being used to indicate whether the terminal device supports operating in the TDD mode cell, or the first capability information being used to indicate whether the terminal device supports paging based on the TDD mode.

[0247] In some embodiments, the paging message carries the first capability information.

[0248] In some embodiments, the capabilities of the terminal device are determined based on the terminal device’s proprietary DRX cycle and / or eDRX cycle.

[0249] In some embodiments, if the terminal device-specific DRX cycle and / or eDRX cycle includes the first DRX cycle and / or the first eDRX cycle, the terminal device's capability supports operation in the TDD mode cell or supports paging based on the TDD mode; or if the terminal device-specific DRX cycle and / or eDRX cycle does not include the first DRX cycle and / or the first eDRX cycle, the terminal device's capability does not support operation in the TDD mode cell or does not support paging based on the TDD mode.

[0250] In some embodiments, the paging message carries a DRX cycle and / or eDRX cycle specific to the terminal device.

[0251] In some embodiments, as shown in FIG9, the device 900 further includes a communication module 920, configured to receive first capability information sent by the terminal device, wherein the first capability information is configured to indicate whether the terminal device supports operating in the TDD mode cell, or the first capability information is configured to indicate whether the terminal device supports paging based on the TDD mode.

[0252] In some embodiments, as shown in FIG9, the device 900 further includes a communication module 920 for sending first information, the first information being used to indicate whether the cell corresponding to the access network device is operating in the TDD mode, or the first information being used to indicate whether the cell corresponding to the access network device allows terminal devices supporting the TDD mode to access.

[0253] Please refer to Figure 10, which shows a block diagram of a paging device according to another embodiment of this application. This device has the function of implementing the paging method on the core network element side described above. This function can be implemented in hardware or by hardware executing corresponding software. The device can be a core network element as described above, or it can be disposed within a core network element. As shown in Figure 10, the device 1000 may include: a communication module 1010.

[0254] The communication module 1010 is used to negotiate with the terminal device to determine a first DRX cycle and / or a first eDRX cycle specific to the terminal device, wherein the first DRX cycle and / or the first eDRX cycle are applicable to cell paging of the terminal device in TDD mode.

[0255] In some embodiments, the first DRX cycle and / or the first eDRX cycle are also applicable to cell paging of the terminal device in non-TDD mode.

[0256] In some embodiments, the first DRX cycle and / or the first eDRX cycle are used to determine the third DRX cycle and / or the third eDRX cycle, wherein the third DRX cycle and / or the third eDRX cycle are DRX cycles and / or eDRX cycles that match the TDD mode, and the third DRX cycle and / or the third eDRX cycle are used to determine the paging frame PF and / or paging timing PO for the terminal device.

[0257] In some embodiments, the third DRX period and / or the third eDRX period is an integer multiple of the first duration, which is 90ms or 9 radio frames.

[0258] In some embodiments, the communication module 1010 is further configured to negotiate with the terminal device to determine a second DRX cycle and / or a second eDRX cycle specific to the terminal device, wherein the second DRX cycle and / or the second eDRX cycle is applicable to paging the terminal device in a non-TDD mode cell.

[0259] In some embodiments, when the terminal device only supports cells operating in the TDD mode, the terminal device and the core network element negotiate to determine the first DRX period and / or the first eDRX period; or, when the terminal device only supports cells operating in the non-TDD mode, the terminal device and the core network element negotiate to determine the second DRX period and / or the second eDRX period; or, when the terminal device supports cells operating in both the TDD mode and the non-TDD mode, the terminal device and the core network element negotiate to determine the first DRX period and / or the first eDRX period, as well as the second DRX period and / or the second eDRX period.

[0260] In some embodiments, the first DRX period and / or the first eDRX period is an integer multiple of a first duration, wherein the first duration is 90ms or 9 radio frames.

[0261] In some embodiments, as shown in FIG10, the apparatus 1000 further includes a processing module 1020, configured to determine whether to send a paging message for the terminal device to the access network device based on the capabilities of the terminal device and the access network device. The capabilities of the terminal device are used to indicate whether the terminal device supports a cell operating in the TDD mode, or to indicate whether the terminal device supports paging based on the TDD mode; the capabilities of the access network device are used to indicate whether the cell corresponding to the access network device operates in the TDD mode, or to indicate whether the cell corresponding to the access network device allows access for terminal devices supporting the TDD mode.

[0262] In some embodiments, the processing module 1020 is configured to send a paging message to the access network device when the cell corresponding to the access network device is operating in TDD mode and the terminal device supports operating in a cell in TDD mode, or the terminal device supports paging based on TDD mode; or, when the cell corresponding to the access network device is operating in TDD mode and the terminal device does not support operating in a cell in TDD mode, or the terminal device does not support paging based on TDD mode, it does not send a paging message to the access network device.

[0263] In some embodiments, the capabilities of the terminal device are determined based on first capability information of the terminal device, the first capability information being used to indicate whether the terminal device supports operating in the TDD mode cell, or the first capability information being used to indicate whether the terminal device supports paging based on the TDD mode.

[0264] In some embodiments, the capabilities of the terminal device are determined based on the terminal device’s proprietary DRX cycle and / or eDRX cycle.

[0265] In some embodiments, if the terminal device-specific DRX cycle and / or eDRX cycle includes the first DRX cycle and / or the first eDRX cycle, the terminal device's capability supports operation in the TDD mode cell or supports paging based on the TDD mode; or if the terminal device-specific DRX cycle and / or eDRX cycle does not include the first DRX cycle and / or the first eDRX cycle, the terminal device's capability does not support operation in the TDD mode cell or does not support paging based on the TDD mode.

[0266] In some embodiments, the communication module 1010 is further configured to receive second information sent by the access network device, the second information being used to indicate whether the cell corresponding to the access network device is operating in the TDD mode, or the second information being used to indicate whether the cell corresponding to the access network device allows terminal devices supporting the TDD mode to access.

[0267] It should be noted that the above embodiments only illustrate the division of the above functional modules when implementing the device. In actual applications, the above functions can be assigned to different functional modules according to actual needs, that is, the content structure of the device can be divided into different functional modules to complete all or part of the functions described above.

[0268] Regarding the apparatus in the above embodiments, the specific manner in which each module performs its operation has been described in detail in the embodiments related to the method, and will not be elaborated upon here. For details not described in detail in the apparatus embodiments, please refer to the above method embodiments.

[0269] Please refer to Figure 11, which shows a schematic diagram of the structure of a terminal device provided in one embodiment of this application. The terminal device 1100 may include a processor 1101, a transceiver 1102, and a memory 1103. The processor 1101 is used to implement various processing functions of the terminal device 1100, such as generating information to be sent, processing received information, controlling transmission and / or reception, etc., such as implementing the functions of the processing module 820 described above. The transceiver 1102 is used to implement transmission and / or reception functions, such as implementing the functions of the communication module 810 described above.

[0270] The processor 1101 includes one or more processing cores. The processor 1101 executes various functional applications and information processing by running software programs and modules.

[0271] The transceiver 1102 may include a receiver and a transmitter. For example, the receiver and transmitter may be implemented as the same wireless communication component, which may include a wireless communication chip and a radio frequency antenna.

[0272] The memory 1103 can be connected to the processor 1101 and the transceiver 1102.

[0273] The memory 1103 can be used to store a computer program executed by the processor, and the processor 1101 is used to execute the computer program to implement the various steps executed by the terminal device in the above method embodiments.

[0274] In some embodiments, transceiver 1102 is used to negotiate with core network elements to determine a first DRX cycle and / or a first eDRX cycle specific to the terminal device, wherein the first DRX cycle and / or the first eDRX cycle is applicable to cell paging of the terminal device in TDD mode.

[0275] For details not described in this embodiment, please refer to the embodiments above, which will not be repeated here.

[0276] Furthermore, the memory can be implemented by any type of volatile or non-volatile storage device or a combination thereof, including but not limited to: magnetic disks or optical disks, electrically erasable programmable read-only memory, erasable programmable read-only memory, statically accessible memory, read-only memory, magnetic memory, flash memory, and programmable read-only memory.

[0277] Please refer to Figure 12, which shows a schematic diagram of the structure of an access network device according to an embodiment of this application. The access network device 1200 may include a processor 1201, a transceiver 1202, and a memory 1203. The processor 1201 can be used to implement various processing functions of the access network device 1200, such as generating information to be sent, processing received information, controlling transmission and / or reception, etc., such as implementing the functions of the processing module 910 described above. The transceiver 1202 is used to implement transmission and / or reception functions, such as implementing the functions of the communication module 920 described above.

[0278] The processor 1201 includes one or more processing cores. The processor 1201 executes various functional applications and information processing by running software programs and modules.

[0279] Transceiver 1202 may include a receiver and a transmitter. For example, transceiver 1202 may include a wired communication component, which may include a wired communication chip and a wired interface (such as a fiber optic interface). Optionally, transceiver 1202 may also include a wireless communication component, which may include a wireless communication chip and a radio frequency antenna.

[0280] The memory 1203 can be connected to the processor 1201 and the transceiver 1202.

[0281] The memory 1203 can be used to store a computer program executed by the processor, and the processor 1201 is used to execute the computer program to implement the various steps performed by the access network device in the above method embodiments.

[0282] In some embodiments, the processor 1201 is configured to page the terminal device based on a terminal device-specific first DRX cycle and / or a first eDRX cycle, wherein the first DRX cycle and / or the first eDRX cycle is applicable to paging the terminal device in a TDD mode cell.

[0283] For details not described in this embodiment, please refer to the embodiments above, which will not be repeated here.

[0284] Furthermore, the memory 1203 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, including but not limited to: magnetic disks or optical disks, electrically erasable programmable read-only memory, erasable programmable read-only memory, static on-demand memory, read-only memory, magnetic memory, flash memory, and programmable read-only memory.

[0285] Please refer to Figure 13, which shows a schematic diagram of the structure of a core network element provided in an embodiment of this application. The core network element 1300 may include a processor 1301, a transceiver 1302, and a memory 1303. The processor 1301 can be used to implement various processing functions of the core network element 1300, such as generating information to be transmitted, processing received information, controlling transmission and / or reception, etc., such as implementing the functions of the processing module 1020 described above. The transceiver 1302 is used to implement transmission and / or reception functions, such as implementing the functions of the communication module 1010 described above.

[0286] The processor 1301 includes one or more processing cores. The processor 1301 executes various functional applications and information processing by running software programs and modules.

[0287] Transceiver 1302 may include a receiver and a transmitter. For example, transceiver 1302 may include a wired communication component, which may include a wired communication chip and a wired interface (such as a fiber optic interface). Optionally, transceiver 1302 may also include a wireless communication component, which may include a wireless communication chip and a radio frequency antenna.

[0288] The memory 1303 can be connected to the processor 1301 and the transceiver 1302.

[0289] The memory 1303 can be used to store a computer program executed by the processor, and the processor 1301 is used to execute the computer program to implement the various steps executed by the core network element in the above method embodiment.

[0290] In some embodiments, transceiver 1302 is configured to negotiate with terminal device to determine a first DRX cycle and / or a first eDRX cycle specific to the terminal device, wherein the first DRX cycle and / or the first eDRX cycle is applicable to cell paging of the terminal device in TDD mode.

[0291] For details not described in this embodiment, please refer to the embodiments above, which will not be repeated here.

[0292] Furthermore, the memory 1303 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, including but not limited to: magnetic disks or optical disks, electrically erasable programmable read-only memory, erasable programmable read-only memory, static on-demand memory, read-only memory, magnetic memory, flash memory, and programmable read-only memory.

[0293] This application embodiment also provides a computer-readable storage medium storing a computer program. The computer program is executed by a processor to implement the paging method on the terminal device side, the paging method on the access network device side, or the paging method on the core network element side. In some embodiments, the computer-readable storage medium may include ROM (Read-Only Memory), RAM (Random-Access Memory), SSD (Solid State Drives), or optical disc, etc. The random access memory may include ReRAM (Resistance Random Access Memory) and DRAM (Dynamic Random Access Memory).

[0294] This application also provides a chip, which includes programmable logic circuits and / or program instructions. When the chip is running, it is used to implement the paging method on the terminal device side described above.

[0295] This application also provides a chip, which includes programmable logic circuits and / or program instructions. When the chip is running in a terminal device, it is used to: negotiate with core network elements to determine a first DRX cycle and / or a first eDRX cycle specific to the terminal device, wherein the first DRX cycle and / or the first eDRX cycle is applicable to cell paging of the terminal device in TDD mode. When the chip is running in the terminal device, it is also used to implement other steps performed by the terminal device as described in the above embodiments, which will not be repeated here.

[0296] This application also provides a chip, which includes programmable logic circuits and / or program instructions. When the chip is running, it is used to implement the paging method on the access network device side described above.

[0297] This application also provides a chip, which includes programmable logic circuitry and / or program instructions. When the chip operates in an access network device, it is used to: page the terminal device based on a terminal device-specific first DRX cycle and / or first eDRX cycle, wherein the first DRX cycle and / or the first eDRX cycle is applicable to paging the terminal device in a TDD mode cell. When the chip operates in the access network device, it is also used to implement other steps performed by the access network device as described in the above embodiments, which will not be repeated here.

[0298] This application also provides a chip, which includes programmable logic circuits and / or program instructions. When the chip is running, it is used to implement the paging method on the core network element side described above.

[0299] This application also provides a chip, which includes programmable logic circuits and / or program instructions. When the chip runs in a core network element, it is used to: negotiate with a terminal device to determine a first DRX cycle and / or a first eDRX cycle specific to the terminal device, wherein the first DRX cycle and / or the first eDRX cycle is applicable to cell paging of the terminal device in TDD mode. When the chip runs in a core network element, it is also used to implement other steps executed by the core network element as described in the above embodiments, which will not be repeated here.

[0300] This application also provides a computer program product, which includes computer instructions stored in a computer-readable storage medium. A processor reads and executes the computer instructions from the computer-readable storage medium to implement the paging method on the terminal device side, or the paging method on the access network device side, or the paging method on the core network element side.

[0301] It should be understood that the term "instruction" mentioned in the embodiments of this application can be a direct instruction, an indirect instruction, or an indication of a relationship. For example, A instructing B can mean that A directly instructs B, such as B being able to obtain information through A; it can also mean that A indirectly instructs B, such as A instructing C, so B can obtain information through C; or it can mean that there is a relationship between A and B.

[0302] In the description of the embodiments of this application, the term "correspondence" may indicate that there is a direct or indirect correspondence between two things, or that there is an association between two things, or that there is a relationship of instruction and being instructed, configuration and being configured, etc.

[0303] In some embodiments of this application, "predefined" can be achieved by pre-storing corresponding codes, tables, or other means that can be used to indicate relevant information in the device (e.g., including terminal devices and network devices). This application does not limit the specific implementation method. For example, predefined can refer to what is defined in the protocol.

[0304] In some embodiments of this application, the term "protocol" may refer to standard protocols in the field of communications, such as BLE protocol, Wi-Fi protocol, and related protocols applied in future communication systems. This application does not limit the scope of these protocols.

[0305] In this article, "multiple" refers to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. The character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0306] In this article, "greater than or equal to" can mean greater than or equal to, and "less than or equal to" can mean less than or equal to.

[0307] Furthermore, the step numbers described herein are merely illustrative of one possible execution order between steps. In some other embodiments, the steps may not be executed in the order of their numbers, such as two steps with different numbers being executed simultaneously, or two steps with different numbers being executed in the reverse order of the illustration. This application does not limit this.

[0308] Those skilled in the art will recognize that the functions described in the embodiments of this application in one or more of the above examples can be implemented using hardware, software, firmware, or any combination thereof. When implemented using software, these functions can be stored in a computer-readable medium or transmitted as one or more instructions or code on a computer-readable medium. Computer-readable media include computer storage media and communication media, wherein communication media include any medium that facilitates the transfer of a computer program from one place to another. Storage media can be any available medium that can be accessed by a general-purpose or special-purpose computer.

[0309] The above description is merely an exemplary embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A paging method, characterized by, The method is performed by a terminal device, and the method comprises: negotiating with a core network element to determine a first discontinuous reception (DRX) cycle and / or a first enhanced discontinuous reception (eDRX) cycle which are specific to the terminal device, wherein the first DRX cycle and / or the first eDRX cycle are applicable to paging the terminal device by a cell in a time division duplex (TDD) mode.

2. The method of claim 1, wherein, The first DRX cycle and / or the first eDRX cycle are also applicable to paging the terminal device by a cell in a non-TDD mode.

3. The method of claim 2, wherein, The method further comprises: in a case where the terminal device camps in a cell in the TDD mode, determining a third DRX cycle and / or a third eDRX cycle according to the first DRX cycle and / or the first eDRX cycle, wherein the third DRX cycle and / or the third eDRX cycle are a DRX cycle and / or an eDRX cycle which match the TDD mode; determining a paging frame (PF) and / or a paging occasion (PO) based on the third DRX cycle and / or the third eDRX cycle.

4. The method of claim 3, wherein, The third DRX cycle and / or the third eDRX cycle are an integer multiple of a first time length, and the first time length is 90 ms or 9 radio frames.

5. The method of claim 1, wherein, The method further comprises: negotiating with the core network element to determine a second DRX cycle and / or a second eDRX cycle which are specific to the terminal device, wherein the second DRX cycle and / or the second eDRX cycle are applicable to paging the terminal device by a cell in a non-TDD mode.

6. The method according to claim 5, wherein, in a case where the terminal device only supports a cell operating in the TDD mode, the terminal device and the core network element negotiate to determine the first DRX cycle and / or the first eDRX cycle; or, in a case where the terminal device only supports a cell operating in the non-TDD mode, the terminal device and the core network element negotiate to determine the second DRX cycle and / or the second eDRX cycle; or, in a case where the terminal device supports a cell operating in the TDD mode and a cell operating in the non-TDD mode, the terminal device and the core network element negotiate to determine the first DRX cycle and / or the first eDRX cycle, and the second DRX cycle and / or the second eDRX cycle.

7. The method according to claim 5 or 6, characterized in that, The first DRX cycle and / or the first eDRX cycle are an integer multiple of a first time length, and the first time length is 90 ms or 9 radio frames.

8. The method according to any one of claims 5 to 7, characterized in that, The method further comprises: in a case where the terminal device camps in a cell in the non-TDD mode, determining a PF and / or a PO based on the second DRX cycle and / or the second eDRX cycle. The method further comprises:

9. The method according to any one of claims 1 to 8, characterized in that, ​ The terminal device sends first capability information to the access network device, the first capability information is used to indicate whether the terminal device supports a cell working in the TDD mode, or the first capability information is used to indicate whether the terminal device supports paging based on the TDD mode.

10. The method according to any one of claims 1 to 9, characterized in that, The method further comprises: The terminal device receives first information sent by the access network device, the first information is used to indicate whether a cell corresponding to the access network device works in the TDD mode, or the first information is used to indicate whether the cell corresponding to the access network device allows a terminal device supporting the TDD mode to access; Based on the first information, the terminal device determines whether to camp in the cell corresponding to the access network device.

11. The method of claim 10, wherein, The method further comprises: In a case where the terminal device supports a cell working in the TDD mode, and the first information indicates that the cell corresponding to the access network device works in the TDD mode, or the first information indicates that the cell corresponding to the access network device allows a terminal device supporting the TDD mode to access, the terminal device determines to camp in the cell corresponding to the access network device.

12. The method of claim 11, wherein, The terminal device ignores first access prohibition information and / or second access prohibition information in a system message, wherein the first access prohibition information is used to indicate whether to prohibit a terminal device in a terrestrial network (TN) system to access, and the second access prohibition information is used to indicate whether to prohibit a terminal device in a non-terrestrial network (NTN) system to access.

13. A paging method, characterized by, The method is performed by an access network device, and the method comprises: The access network device pages a terminal device based on a first discontinuous reception (DRX) cycle and / or a first enhanced discontinuous reception (eDRX) cycle specific to the terminal device, wherein the first DRX cycle and / or the first eDRX cycle are applicable to paging the terminal device in a time division duplex (TDD) mode cell.

14. The method of claim 13, wherein, The first DRX cycle and / or the first eDRX cycle are also applicable to paging the terminal device in a non-TDD mode cell.

15. The method of claim 14, wherein, The method further comprises: In a case where a cell corresponding to the access network device works in the TDD mode, the access network device determines a third DRX cycle and / or a third eDRX cycle according to the first DRX cycle and / or the first eDRX cycle, wherein the third DRX cycle and / or the third eDRX cycle are a DRX cycle and / or an eDRX cycle matched with the TDD mode; The access network device determines a paging frame (PF) and / or a paging occasion (PO) based on the third DRX cycle and / or the third eDRX cycle.

16. The method of claim 15, wherein, The third DRX cycle and / or the third eDRX cycle are an integer multiple of a first time length, and the first time length is 90 ms or 9 radio frames.

17. The method of claim 13, wherein, The terminal device also has a second DRX cycle and / or a second eDRX cycle specific to the terminal device, wherein the second DRX cycle and / or the second eDRX cycle are applicable to paging the terminal device in a non-TDD mode cell.

18. The method of claim 17, wherein, The first DRX cycle and / or the first eDRX cycle is an integer multiple of a first time length, and the first time length is 90 ms or 9 radio frames.

19. The method of claim 17 or 18, wherein, The method further includes: In a case where a cell corresponding to the access network device operates in the TDD mode, performing the paging of the terminal device based on the first DRX cycle and / or the first eDRX cycle specific to the terminal device; In a case where the cell corresponding to the access network device operates in the non-TDD mode, paging the terminal device based on the second DRX cycle and / or the second eDRX cycle.

20. The method according to any one of claims 13 to 19, characterized in that, The method further includes: receiving a paging message for the terminal device sent by a core network element; determining whether to initiate the paging of the terminal device according to a capability of the terminal device, wherein the capability of the terminal device is used to indicate whether the terminal device supports a cell operating in the TDD mode or is used to indicate whether the terminal device supports the paging based on the TDD mode.

21. The method of claim 20, wherein, The capability of the terminal device is determined based on first capability information of the terminal device, and the first capability information is used to indicate whether the terminal device supports the cell operating in the TDD mode or is used to indicate whether the terminal device supports the paging based on the TDD mode.

22. The method of claim 21, wherein, The first capability information is carried in the paging message.

23. The method of claim 20, wherein, The capability of the terminal device is determined based on a DRX cycle and / or an eDRX cycle specific to the terminal device.

24. The method of claim 23, wherein, in a case where the DRX cycle and / or the eDRX cycle specific to the terminal device includes the first DRX cycle and / or the first eDRX cycle, the capability of the terminal device supports the cell operating in the TDD mode or supports the paging based on the TDD mode; or in a case where the DRX cycle and / or the eDRX cycle specific to the terminal device does not include the first DRX cycle and / or the first eDRX cycle, the capability of the terminal device does not support the cell operating in the TDD mode or does not support the paging based on the TDD mode.

25. The method of claim 23 or 24, wherein, The DRX cycle and / or the eDRX cycle specific to the terminal device is carried in the paging message.

26. The method according to any one of claims 13 to 25, characterized in that, The method further includes: receiving first capability information sent by the terminal device, and the first capability information is used to indicate whether the terminal device supports the cell operating in the TDD mode or is used to indicate whether the terminal device supports the paging based on the TDD mode.

27. The method according to any one of claims 13 to 26, characterized in that, The method further includes: sending first information, and the first information is used to indicate whether a cell corresponding to the access network device operates in the TDD mode or is used to indicate whether the cell corresponding to the access network device allows the terminal device supporting the TDD mode to access.

28. A paging method, comprising: The method is performed by a core network element, and the method includes: The terminal device negotiates and determines a first discontinuous reception DRX cycle and / or a first enhanced discontinuous reception eDRX cycle dedicated to the terminal device, wherein the first DRX cycle and / or the first eDRX cycle are applicable to cell paging of the terminal device in time division duplex (TDD) mode.

29. The method of claim 28, wherein, The first DRX cycle and / or the first eDRX cycle are also applicable to cell paging of the terminal device in non-TDD mode.

30. The method of claim 29, wherein, The first DRX cycle and / or the first eDRX cycle are used to determine the third DRX cycle and / or the third eDRX cycle, wherein the third DRX cycle and / or the third eDRX cycle are DRX cycles and / or eDRX cycles that match the TDD mode, and the third DRX cycle and / or the third eDRX cycle are used to determine the paging frame PF and / or paging timing PO for the terminal device.

31. The method of claim 30, wherein, The third DRX period and / or the third eDRX period are integer multiples of the first duration, which is 90ms or 9 radio frames.

32. The method of claim 28, wherein, The method further includes: The terminal device negotiates and determines a second DRX cycle and / or a second eDRX cycle specific to the terminal device, wherein the second DRX cycle and / or the second eDRX cycle are applicable to paging the terminal device in non-TDD mode cells.

33. The method according to claim 32, characterized in that, When the terminal device only supports cells operating in the TDD mode, the terminal device and the core network element negotiate to determine the first DRX cycle and / or the first eDRX cycle. or, When the terminal device only supports working in the non-TDD mode cell, the terminal device and the core network element negotiate to determine the second DRX cycle and / or the second eDRX cycle; or, When the terminal device supports both TDD mode cells and non-TDD mode cells, the terminal device and the core network element negotiate to determine the first DRX cycle and / or the first eDRX cycle, as well as the second DRX cycle and / or the second eDRX cycle.

34. The method of claim 32 or 33, wherein, The first DRX period and / or the first eDRX period is an integer multiple of the first duration, which is 90ms or 9 radio frames.

35. The method of any one of claims 28 to 34, wherein, The method further includes: Based on the capabilities of the terminal device and the access network device, determine whether to send a paging message for the terminal device to the access network device; The capabilities of the terminal device are used to indicate whether the terminal device supports the cell operating in the TDD mode, or to indicate whether the terminal device supports paging based on the TDD mode; the capabilities of the access network device are used to indicate whether the cell corresponding to the access network device operates in the TDD mode, or to indicate whether the cell corresponding to the access network device allows terminal devices supporting the TDD mode to access.

36. The method of claim 35, wherein, The step of determining whether to send a paging message for the terminal device to the access network device based on the capabilities of the terminal device and the access network device includes: When the cell corresponding to the access network device operates in the TDD mode, and the terminal device supports operating in the TDD mode cell, or when the terminal device supports paging based on the TDD mode, the terminal device sends a paging message to the access network device for the terminal device; or, If the cell corresponding to the access network device is operating in the TDD mode, and the terminal device does not support cells operating in the TDD mode, or the terminal device does not support paging based on the TDD mode, then no paging message for the terminal device will be sent to the access network device.

37. The method of claim 35 or 36, wherein, The capabilities of the terminal device are determined based on first capability information of the terminal device, which indicates whether the terminal device supports operating in the TDD mode cell, or whether the terminal device supports paging based on the TDD mode.

38. The method of claim 35 or 36, wherein, The capabilities of the terminal device are determined based on the terminal device’s proprietary DRX cycle and / or eDRX cycle.

39. The method according to claim 38, characterized in that, When the terminal device's dedicated DRX cycle and / or eDRX cycle includes the first DRX cycle and / or the first eDRX cycle, the terminal device's capability supports operation in the TDD mode cell, or supports paging based on the TDD mode; or, If the terminal device's dedicated DRX cycle and / or eDRX cycle does not include the first DRX cycle and / or the first eDRX cycle, the terminal device's capabilities do not support operation in the TDD mode cell, or do not support paging based on the TDD mode.

40. The method of any one of claims 35 to 39, wherein, The method further includes: The system receives second information sent by the access network device, the second information being used to indicate whether the cell corresponding to the access network device is operating in the TDD mode, or the second information being used to indicate whether the cell corresponding to the access network device allows terminal devices supporting the TDD mode to access.

41. A paging device, comprising: The device includes: The communication module is used to negotiate with core network elements to determine a first discontinuous reception DRX cycle and / or a first enhanced discontinuous reception eDRX cycle specific to the terminal device, wherein the first DRX cycle and / or the first eDRX cycle are applicable to cell paging of the terminal device in time division duplex (TDD) mode.

42. A paging device, comprising: The device includes: The processing module is configured to page the terminal device based on a first discontinuous reception DRX cycle and / or a first enhanced discontinuous reception eDRX cycle specific to the terminal device, wherein the first DRX cycle and / or the first eDRX cycle are applicable to paging the terminal device in a time-division duplex (TDD) cell.

43. A paging device, comprising: The device includes: The communication module is used to negotiate with the terminal device to determine a first discontinuous reception DRX cycle and / or a first enhanced discontinuous reception eDRX cycle specific to the terminal device, wherein the first DRX cycle and / or the first eDRX cycle are applicable to cell paging of the terminal device in time division duplex (TDD) mode.

44. A terminal device, comprising: The terminal device includes a processor and a memory, the memory storing a computer program, and the processor executing the computer program to implement the method as described in any one of claims 1 to 12.

45. An access network device, comprising: The access network device includes a processor and a memory, the memory storing a computer program, and the processor executing the computer program to implement the method as described in any one of claims 13 to 27.

46. A core network element, characterized by, The core network element includes a processor and a memory, the memory storing a computer program, and the processor executing the computer program to implement the method as described in any one of claims 28 to 40.

47. A computer-readable storage medium, comprising: The storage medium stores a computer program that is executed by a processor to implement the method as claimed in any one of claims 1 to 12, or the method as claimed in any one of claims 13 to 27, or the method as claimed in any one of claims 28 to 40.

48. A chip, comprising: The chip includes programmable logic circuitry and / or program instructions, which, when the chip is running, are used to implement the method as described in any one of claims 1 to 12, or the method as described in any one of claims 13 to 27, or the method as described in any one of claims 28 to 40.

49. A computer program product, characterised in that, The computer program product includes computer instructions stored in a computer-readable storage medium, which a processor reads from and executes to implement the method as claimed in any one of claims 1 to 12, or the method as claimed in any one of claims 13 to 27, or the method as claimed in any one of claims 28 to 40.

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