WO2023039897A1

WO2023039897A1 - Method for determining paging carrier, terminal device, and network device

Info

Publication number: WO2023039897A1
Application number: PCT/CN2021/119421
Authority: WO
Inventors: 胡奕; 李海涛
Original assignee: Oppo广东移动通信有限公司
Priority date: 2021-09-18
Filing date: 2021-09-18
Publication date: 2023-03-23
Also published as: CN117616820A

Abstract

The present application relates to a method for determining a paging carrier, a terminal device, a network device, a chip, a computer-readable storage medium, a computer program product, and a computer program. The method comprises: a terminal device determines, according to a first measurement quantity, from among N downlink carriers, a carrier for monitoring paging, wherein the first measurement quantity is related to the relative position between the terminal device and a serving satellite of a non-terrestrial network (NTN), and N is an integer greater than or equal to 1. By using embodiments of the present application, the paging performance of a terminal in an NTN system can be guaranteed.

Description

Method for determining paging carrier, terminal equipment and network equipment

technical field

The present application relates to the communication field, and more specifically, relates to a method for determining a paging carrier, a terminal device, a network device, a chip, a computer-readable storage medium, a computer program product and a computer program.

Background technique

The main function of paging is to enable the network to page the terminal through the paging message (paging message) in the idle state or inactive state of the terminal, or to notify the terminal of system message changes or earthquake/tsunami / Public early warning information (applicable to all radio resource control (Radio Resource Control, RRC) states of the terminal, including connection state).

In some scenarios such as Narrow Band Internet of Things (NB-IoT), in order to increase the paging capacity, non-anchor (non-anchor) carriers are introduced to support different downlink (Downlink, DL) carriers There is a certain difference in the paging load among them. However, the current carrier selection mechanism is not suitable for non-terrestrial communication networks (Non Terrestrial Network, NTN), resulting in limited paging performance of NTN.

Contents of the invention

In view of this, the embodiment of the present application provides a method for determining a paging carrier, a terminal device, a network device, a chip, a computer-readable storage medium, a computer program product, and a computer program, which can be used for a terminal in an NTN system to determine to monitor paging downlink carrier.

An embodiment of the present application provides a method for determining a paging carrier, including:

The terminal device determines a carrier for monitoring paging among the N downlink carriers according to the first measurement quantity;

Wherein, the first measurement quantity is related to the relative position between the terminal device and the serving satellite of the non-terrestrial network NTN, and N is an integer greater than or equal to 1.

The network device sends the first configuration information to the terminal device;

Wherein, the first configuration information is used by the terminal device to determine N downlink carriers and/or related information of N downlink carriers, so as to determine the carrier used to monitor paging among the N downlink carriers according to the first measurement quantity; wherein, the first A measurement quantity is related to the relative position between the terminal equipment and the serving satellite of the non-terrestrial network NTN, and N is an integer greater than or equal to 1.

The embodiment of the present application also provides a terminal device, including:

A first processing module, configured to determine a carrier for monitoring paging among N downlink carriers according to the first measurement quantity;

Wherein, the first measurement quantity is related to the relative position between the terminal device and the serving satellite of the NTN, and N is an integer greater than or equal to 1.

The embodiment of the present application also provides a network device, including:

A second communication module, configured to send the first configuration information to the terminal device;

Wherein, the first configuration information is used by the terminal device to determine N downlink carriers and/or related information of N downlink carriers, so as to determine the carrier used to monitor paging among the N downlink carriers according to the first measurement quantity; wherein, the first A measurement quantity is related to the relative position between the terminal equipment and the serving satellite of the NTN, and N is an integer greater than or equal to 1.

The embodiment of the present application also provides a terminal device, including: a processor and a memory, the memory is used to store computer programs, the processor invokes and runs the computer programs stored in the memory, and executes the determination of the paging carrier provided by any embodiment of the present application Methods.

The embodiment of the present application also provides a network device, including: a processor and a memory, the memory is used to store computer programs, the processor invokes and runs the computer programs stored in the memory, and executes the determination of the paging carrier provided by any embodiment of the present application Methods.

The embodiment of the present application also provides a chip, including: a processor, configured to call and run a computer program from the memory, so that the device installed with the chip executes the method for determining the paging carrier provided in any embodiment of the present application.

An embodiment of the present application further provides a computer-readable storage medium for storing a computer program, where the computer program causes the computer to execute the method for determining a paging carrier provided in any embodiment of the present application.

An embodiment of the present application further provides a computer program product, including computer program instructions, wherein the computer program instructions cause a computer to execute the method for determining a paging carrier provided in any embodiment of the present application.

An embodiment of the present application further provides a computer program, which enables a computer to execute the method for determining a paging carrier provided in any embodiment of the present application.

According to the technical solution of the embodiment of this application, the terminal device determines the carrier for monitoring paging according to the relative measurement of the relative position between itself and the serving satellite of the NTN, which can effectively guarantee the paging performance of the terminal in the NTN system.

Description of drawings

FIG. 1 is a schematic diagram of a communication system architecture according to an embodiment of the present application.

Fig. 2A is a schematic diagram of the near-far effect of the terrestrial network in the embodiment of the present application.

Fig. 2B is a schematic diagram of the near-far effect of the NTN system in the embodiment of the present application.

Fig. 3 is a schematic flowchart of a method for determining a paging carrier according to an embodiment of the present application.

Fig. 4 is a schematic flowchart of a method for determining a paging carrier according to another embodiment of the present application.

FIG. 5 is a schematic diagram of application example 1 of the embodiment of the present application.

FIG. 6 is a schematic diagram of application example 2 of the embodiment of the present application.

FIG. 7 is a schematic diagram of a third application example of the embodiment of the present application.

Fig. 8 is a schematic block diagram of a terminal device provided by an embodiment of the present application.

Fig. 9 is a schematic block diagram of a terminal device provided by another embodiment of the present application.

Fig. 10 is a schematic block diagram of a network device provided by an embodiment of the present application.

Fig. 11 is a schematic block diagram of a communication device according to an embodiment of the present application.

Fig. 12 is a schematic block diagram of a chip according to an embodiment of the present application.

Fig. 13 is a schematic block diagram of a communication system according to an embodiment of the present application.

Detailed ways

The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.

The technical solution of the embodiment of the present application can be applied to various communication systems, such as: Global System of Mobile communication (Global System of Mobile communication, GSM) system, code division multiple access (Code Division Multiple Access, CDMA) system, broadband code division multiple access (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 system of NR system, LTE (LTE-based access to unlicensed spectrum, LTE-U) system on unlicensed spectrum, NR (NR-based access to unlicensed spectrum) on unlicensed spectrum unlicensed spectrum (NR-U) system, Non-Terrestrial Networks (NTN) system, Universal Mobile Telecommunications System (UMTS), Wireless Local Area Networks (WLAN), Wireless Fidelity (Wireless Fidelity, WiFi), fifth-generation communication (5th-Generation, 5G) system or other communication systems, etc.

Generally speaking, the number of connections supported by traditional communication systems is limited and easy to implement. However, with the development of communication technology, mobile communication systems will not only support traditional communication, but also support, for example, Device to Device (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, etc. , the embodiments of the present application may also be applied to these communication systems.

Optionally, the communication system in the embodiment of the present application may be applied to a carrier aggregation (Carrier Aggregation, CA) scenario, may also be applied to a dual connectivity (Dual Connectivity, DC) scenario, and may also be applied to an independent (Standalone, SA) deployment Web scene.

The embodiments of the present application describe various embodiments in conjunction with network equipment and terminal equipment, wherein the terminal equipment may also be referred to as user equipment (User Equipment, UE), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device, etc.

The terminal device can be a station (STAION, ST) in the WLAN, a cellular phone, a cordless phone, a Session Initiation Protocol (Session Initiation Protocol, SIP) phone, a wireless local loop (Wireless Local Loop, WLL) station, a personal digital processing (Personal Digital Assistant, PDA) devices, handheld devices with wireless communication functions, computing devices or other processing devices connected to wireless modems, vehicle-mounted devices, wearable devices, next-generation communication systems such as terminal devices in NR networks, or future Terminal equipment in the evolved public land mobile network (Public Land Mobile Network, PLMN) network, etc.

In the embodiment of this application, the terminal device can be deployed on land, including indoor or outdoor, handheld, wearable or vehicle-mounted; it can also be deployed on water (such as ships, etc.); it can also be deployed in the air (such as aircraft, balloons and satellites) superior).

In this embodiment of the application, the terminal device may be a mobile phone (Mobile Phone), a tablet computer (Pad), a computer with a wireless transceiver function, a virtual reality (Virtual Reality, VR) terminal device, an augmented reality (Augmented Reality, AR) terminal Equipment, wireless terminal equipment in industrial control, wireless terminal equipment in self driving, wireless terminal equipment in remote medical, wireless terminal equipment in smart grid , wireless terminal equipment in transportation safety, wireless terminal equipment in smart city, or wireless terminal equipment in smart home.

As an example but not a limitation, in this embodiment of the present application, the terminal device may also be a wearable device. Wearable devices can also be called wearable smart devices, which is a general term for the application of wearable technology to intelligently design daily wear and develop wearable devices, such as glasses, gloves, watches, clothing and shoes. A wearable device is a portable device that is worn directly on the body or integrated into the user's clothing or accessories. Wearable devices are not only a hardware device, but also achieve powerful functions through software support, data interaction, and cloud interaction. Generalized wearable smart devices include full-featured, large-sized, complete or partial functions without relying on smart phones, such as smart watches or smart glasses, etc., and only focus on a certain type of application functions, and need to cooperate with other devices such as smart phones Use, such as various smart bracelets and smart jewelry for physical sign monitoring.

In the embodiment of the present application, the network device may be a device for communicating with the mobile device, and the network device may be an access point (Access Point, AP) in WLAN, a base station (Base Transceiver Station, BTS) in GSM or CDMA , or a base station (NodeB, NB) in WCDMA, or an evolved base station (Evolutional Node B, eNB or eNodeB) in LTE, or a relay station or access point, or a vehicle-mounted device, a wearable device, and an NR network The network equipment (gNB) in the network or the network equipment in the future evolved PLMN network, etc.

As an example but not a limitation, in this embodiment of the present application, the network device may have a mobile feature, for example, the network device may be a mobile device. Optionally, the network equipment may be a satellite or a balloon station. For example, the satellite can be a low earth orbit (low earth orbit, LEO) satellite, a medium earth orbit (medium earth orbit, MEO) satellite, a geosynchronous earth orbit (geosynchronous earth orbit, GEO) satellite, a high elliptical orbit (High Elliptical Orbit, HEO) satellite. ) Satellite etc. Optionally, the network device may also be a base station installed on land, water, and other locations.

In this embodiment of the present application, the network device may provide services for a cell, and the terminal device communicates with the network device through the transmission resources (for example, frequency domain resources, or spectrum resources) used by the cell, and the cell may be a network device ( For example, a cell corresponding to a base station), the cell may belong to a macro base station, or may belong to a base station corresponding to a small cell (Small cell), and the small cell here may include: a metro cell (Metro cell), a micro cell (Micro cell), a pico cell ( Pico cell), Femto cell, etc. These small cells have the characteristics of small coverage and low transmission power, and are suitable for providing high-speed data transmission services.

Fig. 1 schematically shows a wireless communication system 1000 including one network device 1100 and two terminal devices 1200, optionally, the wireless communication system 1000 may include multiple network devices 1100, and the coverage of each network device 1100 Other numbers of terminal devices may be included in the scope, which is not limited in this embodiment of the present application. Optionally, the wireless communication system 1000 shown in FIG. 1 may also include other network entities such as a mobility management entity (Mobility Management Entity, MME), an access and mobility management function (Access and Mobility Management Function, AMF), etc. The embodiment of the application does not limit this.

It should be understood that a device with a communication function in the network/system in the embodiment of the present application may be referred to as a communication device. Taking the communication system shown in Figure 1 as an example, the communication equipment may include network equipment and terminal equipment with communication functions. It may include other devices in the communication system, such as network controllers, mobility management entities and other network entities, which are not limited in this embodiment of the present application.

It should be understood that the terms "system" and "network" are often used interchangeably herein. In this article, the term "and/or" is used to describe the association relationship of associated objects, for example, it means that there may be three relationships between the associated objects before and after. There are three cases of B alone. In this paper, the character "/" generally indicates that the contextual objects are "or" relationships.

It should be understood that the "indication" mentioned in the embodiments of the present application may be a direct indication, may also be an indirect indication, and may also mean that there is an association relationship. For example, A indicates B, which can mean that A directly indicates B, for example, B can be obtained through A; it can also indicate that A indirectly indicates B, for example, A indicates C, and B can be obtained through C; it can also indicate that there is an association between A and B relation.

In the description of the embodiments of the present application, the term "corresponding" may indicate that there is a direct or indirect correspondence between the two, or that there is an association between the two, or that it indicates and is indicated, configuration and is configuration etc.

In order to facilitate the understanding of the technical solutions of the embodiments of the present application, the related technologies of the embodiments of the present application are described below. The following related technologies can be combined with the technical solutions of the embodiments of the present application as optional solutions, and all of them belong to the embodiments of the present application. protected range.

(1) NTN related technologies

NTN generally adopts satellite communication to provide communication services to ground users. Compared with terrestrial cellular network communication, satellite communication has many unique advantages.

First of all, satellite communication is not restricted by user's geography. For example, general terrestrial communication cannot cover areas such as oceans, mountains, deserts, etc. where communication equipment cannot be installed or communication coverage is not possible due to sparse population. Satellites can orbit the earth, so theoretically every corner of the earth can be covered by satellite communications.

Secondly, satellite communication has great social value. Satellite communication can be covered at a lower cost in remote mountainous areas, poor and backward countries or regions, so that people in these regions can enjoy advanced voice communication and mobile Internet technology, which is conducive to narrowing the digital gap with developed regions and promoting development of these areas.

Thirdly, the distance of satellite communication is long, and the cost of communication does not increase significantly with the increase of communication distance; moreover, the stability of satellite communication is high, and it is not limited by natural disasters.

Communication satellites are divided into Low-Earth Orbit (LEO) satellites, Medium-Earth Orbit (MEO) satellites, Geostationary Earth Orbit (GEO) satellites, and high elliptical orbit satellites according to their orbital heights. (High Elliptical Orbit, HEO) satellites and so on. At present, the main researches are LEO and GEO:

1.LEO

Low-orbit satellites have an altitude range of 500km to 1500km, and the corresponding orbital period is about 1.5 hours to 2 hours. The signal propagation delay of single-hop communication between users is generally less than 20ms. The maximum satellite visible time is 20 minutes. The signal propagation distance is short, the link loss is small, and the requirements for the transmission power of the user terminal are not high.

2. GEO

Satellites in geosynchronous orbit have an orbital altitude of 35786km and a period of 24 hours around the earth. The signal propagation delay of single-hop communication between users is generally 250ms.

In order to ensure satellite coverage and improve the system capacity of the entire satellite communication system, satellites use multi-beams to cover the ground. A satellite can form dozens or even hundreds of beams to cover the ground; a satellite beam can cover tens to hundreds of kilometers in diameter. ground area.

(2) NB-IoT/eMTC coverage level

In order to support coverage enhancement, CE Level (Coverage Enhancement Level, coverage enhancement level) was introduced in NB-IoT and eMTC (Enhanced Machine Type Communication, enhanced machine type communication). For example, for NB-IoT, three levels of CE Level 0, 1, and 2 are defined, corresponding to signal attenuation that can resist 144dB, 154dB, and 164dB, respectively. Among them, CE Level 0 is called normal coverage, and the remaining CE Levels are called enhanced coverage. The base station and NB-IoT terminal will select the corresponding number of repeated signal transmissions according to their CE Level.

In order to support coverage level enhancement, NB-IoT introduces a repeated transmission mechanism for various physical signals/channels.

(3) LTE paging mechanism

The main function of Paging is to enable the network to page the UE through the paging message in the RRC_IDLE (idle state) or RRC_INACTIVE (connected state) of the UE, or notify the UE of system message changes or earthquake tsunami/public warning information (applicable to all RRC of the UE) through short messages state, including connected state).

Paging includes PDCCH (Physical Downlink Control Channel, physical downlink control channel) scrambled by P-RNTI (Paging Radio Network Temporary ID, paging wireless network temporary identification), and PDSCH (Physical Downlink Shared Channel, physical downlink control channel) scheduled by the PDCCH downlink shared channel). Paging message (paging message) is transmitted in PDSCH.

For a UE in the RRC_IDLE state or RRC_INACTIVE state, since there is no other data communication between the UE and the network, in order to save power for the terminal, the UE can discontinuously monitor the paging channel, that is, use the paging DRX (Discontinuous Reception, discontinuous reception) mechanism. Under the Paging DRX mechanism, the UE only needs to monitor paging during one PO (Paging Occasion, paging opportunity) in each DRX cycle (period). PO refers to a subframe on which the network can transmit the PDCCH, MPDCCH (Machine Type Communication Physical Downlink Control Channel, Machine Type Communication Physical Downlink Control Channel) used to indicate the P-RNTI scrambling of the paging message, or for NPDCCH (Narrowband Physical Downlink Control Channel, Narrowband Physical Downlink Control Channel) for NB-IoT. For MPDCCH scrambled by P-RNTI, PO refers to the starting subframe of MPDCCH repeated transmission. For NPDCCH scrambled by P-RNTI, PO refers to the start subframe of NPDCCH repeated transmission, unless the PO subframe is an invalid NB-IoT downlink subframe, in which case, the first valid subframe after PO The subframe is the starting subframe of repeated transmission of the NPDCCH. In addition, there is the concept of PF (Paging Frame, paging frame). PF refers to a wireless frame (fixed 10ms), which can contain multiple POs.

The period of the Paging DRX is jointly determined by the public period in the system broadcast and the dedicated period configured in the high-level signaling, where the high-level signaling is, for example, NAS (Non-access stratum, non-access stratum) signaling. The UE takes the minimum period of the two as the period of the Paging Cycle. From a network point of view, a paging DRX cycle can have multiple POs. The position where the UE monitors paging, that is, the PO is related to the ID (Identifier, identifier) of the UE. Specifically, the method for determining the PF and PO of a certain UE in a Paging DRX cycle can refer to the following content.

The system frame number (System Frame Number, SFN) of PF is determined according to the following formula:

SFN mod T＝(T div N)*(UE_ID mod N);

Among them, mod means modulo budget, and div means integer division operation.

The number of PO located in a PF (denoted as i_s) is determined according to the following formula:

i_s = floor(UE_ID/N) mod Ns;

Among them, floor represents the rounding down operation.

The specific meanings of the parameters in the above formula are as follows:

T: The DRX cycle for the UE to receive paging. The network will broadcast 1 default DRX cycle. For NB-IoT, if the upper layer configures a UE-specific DRX cycle for the UE, and the network broadcasts a minimum UE-specific DRX cycle, then T=min(default DRX cycle broadcast by the network, max(UE-specific DRX cycle, network broadcasted minimum UE-specific DRX cycle)). If the high layer does not configure a UE-specific DRX cycle for the UE, or the network does not broadcast a minimum UE-specific DRX cycle, then T is the default DRX cycle broadcast by the network.

N: the number of PFs included in one DRX cycle.

Ns: the number of POs contained in a PF.

For a UE, according to the above formula, the position of the PF in a paging DRX cycle and the number (index) of the PO can be determined. The UE blindly detects the paging message according to the determined PO.

In order to increase the paging capacity, NB-IoT introduces non-anchor (non-anchor) carriers in Rel-14, and can support certain differences in paging load between different DL carriers. To this end, the network can broadcast a DL non-anchor list, and configure a paging weight w for the DL anchor (anchor point) carrier and each DL non-anchor carrier. This parameter is used to control the paging between different DL carriers. Paging load distribution. The UE determines its own paging carrier based on the UE ID and the above configuration. For specific methods, refer to the following.

The paging carrier of the UE is the carrier with the smallest index (denoted as n) satisfying the following formula (0≤n≤Nn-1):

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

Among them, the specific meaning of each parameter is as follows:

W(i): the weight of NB-IoT paging carrier i (the carrier whose index is i);

W: The sum of the weights of all NB-IoT paging carriers, for example, W=W(0)+W(1)+...+W(Nn-1).

(4) R17NB-IoT carrier selection enhancement

In the NB-IoT network, when the network is configured with non-anchor carriers, the network can configure the maximum number of repeated transmissions of the paging NPDCCH for each non-anchor carrier. For example, the parameter npdcch-NumRepetitionPaging-r14, the value range of this parameter From 1 to 2048. However, since the UE determines the paging carrier based on the UE ID, in order to ensure the paging reception reliability of the UE at the edge of the cell coverage, in general, the network's npdcch-NumRepetitionPaging-r14 for all paging carriers will be supported based on the maximum coverage of the cell The paging repeat transmission times to configure.

Due to the introduction of repeated paging transmission, mutual interference between POs with similar time domains is caused, and the maximum number of repeated paging transmissions results in a larger interference range.

In order to reduce signal interference between different POs and improve paging reliability and paging capacity, R17 introduces carrier selection based on coverage level for NB-IoT, which supports NB-IoT carrier selection based on coverage level and specific configuration of related carriers. Exemplary implementations include:

The UE selects the NB-IoT paging carrier based on NRSRP (Narrowband Reference Signal Received Power, narrowband reference signal received power). For NRSRP-based NB-IoT paging carrier selection, a hysteresis parameter or timer can also be introduced to prevent UE from ping-pong switching between different carriers.

After in-depth research by the inventors of the present application, it is found that in the LTE terrestrial network, as shown in FIG. 2A , the reference signal received power RSRP when the UE is at the center of the cell is significantly higher than the RSRP when it is at the edge of the cell. Due to the obvious "near and far effect", the UE can judge whether its channel state is good enough through RSRP measurement, so as to select the paging carrier based on the RSRP measurement, and use the downlink carrier with a relatively small number of repeated transmissions to receive paging.

However, in the NTN system, as shown in Figure 2B, for the UE at the center of the cell and the UE at the edge of the cell, their corresponding RSRP differences are not obvious. If the paging carrier is selected based on RSRP measurement, it is difficult to set a suitable The RSRP threshold used for paging carrier selection, on the other hand, due to errors in RSRP measurement, it is likely to cause the UE to select an inappropriate paging carrier. For example, for the users in the center of the cell, due to the low measured RSRP, the paging carrier with a large number of paging repetitions is selected, and a large number of repeated transmissions is used, resulting in unnecessary waste of resources; for the users at the edge of the cell, due to the measured The high RSRP causes the initial selection of the paging carrier with fewer paging repetitions, resulting in paging failure. To sum up, selecting the paging carrier based on RSRP measurement in the NTN system may lead to an increase in the number of paging for the UE or directly lead to paging failure, seriously affecting user experience.

The solutions provided in the embodiments of the present application are mainly used to solve at least one of the above problems.

In order to understand the characteristics and technical contents of the embodiments of the present invention in more detail, the implementation of the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. The attached drawings are only for reference and description, and are not intended to limit the embodiments of the present invention.

Fig. 3 is a schematic flowchart of a method for determining a paging carrier according to an embodiment of the present application. The method can optionally be applied to the communication system shown in FIG. 1 , but is not limited thereto. The method includes at least some of the following.

S310: The terminal device determines, among the N downlink carriers, a carrier for monitoring paging (hereinafter referred to as a paging carrier for short) according to the first measurement quantity;

Exemplarily, the relative position between the terminal device and the serving satellite of the NTN is the position of the terminal device relative to the serving satellite of the current NTN cell. The location may be characterized based on information such as distance and angle between the terminal device and the serving satellite, such as an inclination angle relative to the ground.

Optionally, the first measurement quantity related to the above relative position may include at least one of the following measurement quantities:

the distance between the terminal device and the serving satellite;

The wireless signal transmission delay between the terminal equipment and the serving satellite;

The round trip time (Round Trip Time, RTT) between the terminal device and the serving satellite;

The timing advance (Timing Advance, TA) between the terminal equipment and the serving satellite;

The distance between the terminal equipment and the corresponding ground reference point of the serving satellite;

The elevation angle of the terminal device to the serving satellite.

Exemplarily, the ground reference point corresponding to the serving satellite may include a cell coverage center point corresponding to the serving satellite or a projection point of the serving satellite on the ground, and the like.

Exemplarily, the elevation angle from the terminal device to the serving satellite may refer to an inclination angle of a line between the terminal device and the serving satellite relative to the ground.

Optionally, the N downlink carriers may include a downlink anchor carrier (DL anchor carrier) and/or M downlink non-anchor carriers (DL non-anchor carrier), where M is an integer greater than or equal to 1 and less than or equal to N.

Optionally, the method may also include:

The terminal device receives the first configuration information from the network device, and determines the N downlink carriers and/or related information of the N downlink carriers according to the first configuration information.

That is to say, the above N downlink carriers may be configured by the network. Exemplarily, the network device may be located on the serving satellite or on the ground, but it is not limited thereto.

Correspondingly, the embodiment of the present application also provides a method for determining a paging carrier based on network equipment, as shown in FIG. 4 , the method includes:

S410: The network device sends the first configuration information to the terminal device;

Optionally, the first configuration information may be used to configure at least one of the following information:

Downlink anchor carrier (DL anchor carrier);

Downlink non-anchor carrier list (DL non-anchor carrier list);

The maximum number of repeated paging transmissions corresponding to each of the N downlink carriers;

A first measurement threshold corresponding to each of the N downlink carriers;

RSRP threshold corresponding to each downlink carrier in the N downlink carriers;

The location of the ground reference point corresponding to the serving satellite.

Specifically, the network can configure the downlink carrier through the first configuration information; it can also configure carrier parameters for selecting a paging carrier among multiple carriers, such as the maximum number of repeated paging transmissions corresponding to the carrier, the first measurement threshold, RSRP threshold, etc.; information for determining the first measurement quantity can also be configured, such as the position of the ground reference point corresponding to the serving satellite.

Exemplarily, the DL non-anchor carrier list may include M DL non-anchor carriers. The network can only configure the DL anchor carrier, or only configure the DL non-anchor carrier list, or configure both the DL anchor carrier and the DL non-anchor carrier list. The terminal can determine N DL carriers according to the list of DL anchor carriers and/or DL non-anchor carriers configured by the network, as candidate carriers for monitoring paging.

Exemplarily, the above-mentioned maximum repeated transmission times of paging may be the maximum repeated transmission times of paging PDCCH. Applied to the NB-IoT scenario, it can be the maximum number of repeated transmissions of the paging NPDCCH. It can also be applied in the eMTC scenario, and is the maximum number of retransmissions of the MPDCCH.

Optionally, the first configuration information may be carried by a system message.

Optionally, the system information includes a system information block (System Information Block, SIB), such as SIBx, where x is an integer greater than or equal to 1, and SIBx is SIB1, SIB2, or SIB3.

Optionally, the above method may also include:

The network device sends second configuration information to the terminal device; wherein, the second configuration information is used to configure the downlink carrier on which the terminal monitors paging and/or the maximum number of repeated paging PDCCH transmissions corresponding to the downlink carrier on which the terminal monitors paging.

That is to say, the network can configure the paging carrier and/or the corresponding maximum number of repeated transmission times of the paging PDCCH for the terminal through the second configuration information.

Optionally, the above S310: the terminal device determines the carrier for monitoring paging among the N downlink carriers according to the first measurement quantity, which may include:

In the case that the second configuration information sent by the network device is not received, the terminal device determines the carrier for monitoring paging among the N downlink carriers according to the first measurement quantity;

Wherein, the second configuration information is used to configure the downlink carrier on which the terminal monitors paging and/or the maximum number of repeated transmission times of the paging PDCCH corresponding to the downlink carrier on which the terminal monitors paging.

That is to say, in the case where the network does not configure the downlink carrier that the terminal monitors for paging and/or the maximum number of repeated paging PDCCH transmissions corresponding to the downlink carrier, the terminal can determine the number of times to use among the N downlink carriers according to the first measurement quantity. carrier for paging.

Optionally, the second configuration information may be sent in a broadcast, multicast, or unicast manner. For example, the second configuration information may be carried by broadcast information. Alternatively, the second configuration information is sent in a unicast manner and carried by terminal-specific signaling.

Optionally, the second configuration information is used to instruct the terminal device to determine a carrier for monitoring paging according to the carrier configured in the second configuration information. The above methods may also include:

When receiving the second configuration information, the terminal device determines a carrier for monitoring paging according to the downlink carrier configured by the second configuration information.

For example, the terminal device may determine the downlink carrier configured by the network through the second configuration information as the paging carrier without determining the paging carrier according to the first measurement quantity.

Optionally, the second configuration information is used to indicate the maximum number of repeated paging PDCCH transmissions configured by the terminal device according to the second configuration information and the maximum number of repeated paging transmissions corresponding to each of the N downlink carriers. Determine the carrier used to monitor paging among the carriers. Correspondingly, the above method may also include:

In the case of receiving the second configuration information, the terminal device, according to the maximum number of paging retransmissions configured by the second configuration information and the maximum number of paging retransmissions corresponding to each of the N downlink carriers, performs the N downlink Determine the carrier used to monitor paging among the carriers.

For example, based on the maximum number of repeated transmissions of the paging PDCCH configured by the network, the terminal device may determine a carrier whose corresponding maximum number of repeated transmissions of the paging PDCCH is equal to the maximum number of repeated transmissions of the paging PDCCH configured by the network among the N downlink carriers as the carrier used for Listen to the carrier for paging.

Optionally, the terminal device determines a carrier for monitoring paging among the N downlink carriers according to the first measurement quantity, including:

The terminal device determines a carrier for monitoring paging among the N downlink carriers according to the first measurement amount and the first measurement amount threshold corresponding to each of the N downlink carriers.

Exemplarily, the terminal device may compare the first measurement amount with the first measurement amount threshold corresponding to each downlink carrier. For a certain downlink carrier, determine whether the downlink carrier can be used as a paging carrier according to the magnitude relationship between the first measurement quantity and the first measurement quantity threshold corresponding to the downlink carrier.

Optionally, according to the first measurement quantity and the first measurement quantity threshold corresponding to each of the N downlink carriers, the terminal device determines a carrier for monitoring paging among the N downlink carriers, including:

When the size relationship between the first measurement amount and the first measurement amount threshold corresponding to the i-th downlink carrier among the N downlink carriers conforms to the preset size relationship, the terminal device determines the i-th downlink carrier as the Monitor the paging carrier;

Wherein, i is an integer greater than or equal to 1 and less than or equal to N.

In practical applications, the preset size relationship is related to the first measurement quantity.

For example, in the case where the first measurement is positively correlated with the relative position between the terminal device and the serving satellite (that is, the farther the relative position is, the greater the first measurement is), the preset size relationship can be set as the first measurement less than (or equal to) the first measurement threshold corresponding to the carrier. For example, the first measurement amount is the distance between the terminal device and the serving satellite, the wireless signal transmission delay, RTT, TA, or the distance between the terminal device and the corresponding ground reference point of the serving satellite, then the first measurement amount is less than ( (or equal to) the first measurement threshold corresponding to the carrier, the terminal may use the carrier as the carrier for monitoring paging.

As another example, in the case where the first measurement quantity is negatively correlated with the relative position between the terminal device and the serving satellite (that is, the farther the relative position is, the smaller the first measurement quantity), the preset size relationship can be set as the first measurement The quantity is greater than (or equal to) the first measurement quantity threshold corresponding to the carrier. For example, the first measurement quantity is the elevation angle from the terminal device to the serving satellite, and if the elevation angle is greater than (or equal to) the elevation angle threshold corresponding to the carrier, the terminal may use the carrier as the carrier for monitoring paging.

Optionally, the terminal device may perform carrier selection in combination with the first measurement quantity and the RSRP. Specifically, the terminal device determines a carrier for monitoring paging among the N downlink carriers according to the first measurement amount, including:

The terminal device determines a carrier for monitoring paging among the N downlink carriers according to the first measurement amount and the RSRP.

Optionally, the terminal device determines a carrier for monitoring paging among the N downlink carriers according to the first measurement amount and the RSRP, including:

The terminal device determines a carrier for monitoring paging among the N downlink carriers according to the first measurement amount, the RSRP, the first measurement amount threshold corresponding to each of the N downlink carriers, and the RSRP threshold.

Optionally, the terminal device determines a carrier for monitoring paging among the N downlink carriers according to the first measurement amount, the RSRP, the first measurement amount threshold corresponding to each of the N downlink carriers, and the RSRP threshold, include:

The size relationship between the first measurement amount and the first measurement amount threshold corresponding to the i-th downlink carrier in the N downlink carriers conforms to the preset size relationship and/or the RSRP is greater than (or equal to) the value corresponding to the i-th downlink carrier In the case of the RSRP threshold, the terminal device determines the i-th downlink carrier as the carrier for monitoring paging;

According to the above optional manner, the carrier used for monitoring paging should meet certain conditions. For example, the condition is that the magnitude relationship between the first measurement quantity and the first measurement quantity threshold corresponding to the carrier conforms to the preset magnitude relationship. In the case of carrier selection combined with RSRP, the condition may include that the magnitude relationship between the first measurement quantity and the first measurement quantity threshold corresponding to the carrier conforms to a preset magnitude relationship and/or the RSRP is greater than the RSRP threshold corresponding to the carrier.

In practical applications, the N downlink carriers may include K carriers meeting the condition, and K is an integer greater than or equal to 1 and less than or equal to N. The terminal device may determine one of the K carriers that meet the conditions as a carrier for monitoring paging according to the first measurement amount, the RSRP, and the maximum number of paging retransmissions corresponding to each downlink carrier. For example, the terminal device may determine the carrier with the smallest maximum number of repeated paging transmissions among the K carriers meeting the condition as the carrier for monitoring paging. In this way, the paging performance can be guaranteed, and at the same time, interference caused by a large number of repeated transmissions can be reduced.

An exemplary implementation manner is that the terminal device may first determine K carriers that meet the conditions, and then select a paging carrier for monitoring from the determined K carriers according to the maximum number of repeated paging transmissions corresponding to the carriers.

Another exemplary implementation manner is that the terminal device may sort the N downlink carriers according to the maximum number of repeated paging transmissions corresponding to each carrier. That is to say, the N downlink carriers have a certain order, and the order of the N downlink carriers is determined based on the maximum number of repeated paging transmissions corresponding to each downlink carrier. Traversing the N downlink carriers, if the traversed i-th downlink carrier does not meet the condition, then judge whether the i+1-th downlink carrier meets the condition based on the first measurement quantity (optionally in combination with RSRP). If the i-th downlink carrier traversed meets the condition, the i-th downlink carrier is determined as a carrier for monitoring paging, and the traversal is stopped.

Optionally, the order of the N downlink carriers is determined by sorting the maximum number of repeated paging transmissions corresponding to each downlink carrier from small to large. In this way, the carrier with the smallest maximum number of repeated paging retransmissions among the K carriers satisfying the condition can be determined as the carrier for monitoring paging, so as to ensure paging performance and reduce interference.

The embodiment of the present application also provides a manner of determining the first measurement quantity.

Optionally, the method also includes:

The terminal device determines the first measurement quantity based on the positioning information of the terminal device.

Optionally, in the case where the first measurement is related to the position of the serving satellite, for example, the first measurement is the distance between the terminal device and the serving satellite, the RTT between the terminal device and the serving satellite, or the terminal device to the serving satellite The terminal device determines the first measurement quantity based on the positioning information of the terminal device, including:

The terminal device determines the position of the serving satellite based on the ephemeris information;

Based on the positioning information of the terminal device and the position of the serving satellite, the terminal device determines the distance between the terminal device and the serving satellite, the RTT between the terminal device and the serving satellite, or the elevation angle from the terminal device to the serving satellite.

Optionally, in the case that the first measurement quantity is related to the ground reference point corresponding to the serving satellite, the terminal device determines the first measurement quantity based on the positioning information of the terminal device, including:

The terminal device determines the distance between the terminal device and the ground reference point corresponding to the serving satellite based on the positioning information of the terminal device and the position of the ground reference point corresponding to the serving satellite.

Several specific application examples of the embodiments of the present application are provided below.

Application example one

Figure 5 shows a schematic diagram of this application example.

The UE selects the paging carrier based on the relative position between the UE and the serving satellite of the current cell, or based on the relative position between the UE and the serving satellite of the current cell and combined with RSRP measurement results.

The specific implementation process is as follows:

1. The UE receives network configuration information and configures relevant parameters of Paging. specifically:

a) Configure DL non-anchor carrier list such as R17DL non-anchor carrier list. The DL non-anchor carrier list is used for DL carrier selection based on coverage class.

b) For each DL carrier and/or DL anchor carrier in the DL non-anchor carrier list, configure a paging(N)PDCCH Rmax, which is the maximum number of repeated transmissions of the paging PDCCH or the maximum number of repeated transmissions of the paging NPDCCH.

c) For each DL carrier and/or DL anchor carrier in the DL non-anchor carrier list, respectively configure a (N)RSRP threshold (RSRP threshold or NRSRP threshold) for DL carrier selection.

d) For each DL carrier and/or DL anchor carrier in the DL non-anchor carrier list, configure a first measurement threshold for DL carrier selection, the relative position between the first measurement and the UE and the serving satellite Correlation, the first measurement quantity can be any one of the following measurement quantities:

The distance between the UE and the serving satellite of the current cell;

The wireless signal transmission delay between the UE and the serving satellite of the current cell;

RTT between the UE and the serving satellite of the current cell;

The TA between the UE and the serving satellite of the current cell, that is, the TA corresponding to the service link (service link).

e) The configuration information is the common configuration of the cell and is carried in the system message, for example, using SIBx (x is greater than or equal to 1).

2. The UE determines the DL carrier to monitor paging, the method is as follows:

a) If the network configures the UE with a DL carrier for monitoring paging through UE-specific signaling, the UE monitors paging on the DL carrier configured by the network;

Or, if the network configures the paging(N)PDCCH Rmax for the UE to monitor paging through UE-specific signaling, the UE monitors paging on the DL carrier that matches the paging(N)PDCCH Rmax configured by the network, that is, the UE selects The paging(N)PDCCH Rmax corresponding to the DL carrier used to monitor paging is equal to the paging(N)PDCCH Rmax configured by the network for the UE to monitor paging.

b) Otherwise, UE performs DL carrier selection according to the following method:

First, the UE sorts all DL carriers based on the coverage level. For example, N DL carriers are sorted according to their corresponding paging(N)PDCCH Rmax from small to large. Each carrier is marked as DL carrier i, and the larger i is, the corresponding paging (N) The larger the PDCCH Rmax is.

Way 1: The UE selects a DL carrier for monitoring paging based on the first measurement measurement between itself and the satellite.

Take the first measurement quantity as RTT as an example (at this time, the threshold of the first measurement quantity is the RTT threshold):

Specifically, the UE obtains its own position based on the positioning capability, obtains the position of the serving satellite of the current cell based on the ephemeris information, and calculates the RTT between itself and the satellite according to its own position and the satellite position, which is recorded as measured RTT.

– If the measured RTT is less than (or equal to) the RTT threshold corresponding to DL carrier 1, the UE selects DL carrier 1 as the carrier for monitoring paging;

– Otherwise, if the measured RTT is less than (or equal to) the RTT threshold corresponding to DL carrier 2, the UE selects DL carrier 2 as the carrier for monitoring paging;

–…

– Otherwise, if the measured RTT is less than (or equal to) the RTT threshold corresponding to DL carrier N, the UE selects DL carrier N as the carrier for monitoring paging.

Mode 2: The UE selects a DL carrier for monitoring Paging based on the first measurement quantity measurement and combined with the RSRP measurement.

Way 2-1: RSRP and RTT meet the conditions at the same time, then the corresponding DL carrier can be selected.

– If the measured RTT is less than (or equal to) the RTT threshold corresponding to DL carrier 1, and the measured RSRP (denoted as measured (N) RSRP) is greater than (or equal to) the (N) RSRP threshold corresponding to DL carrier 1, then the UE selects DL carrier 1 is the carrier for monitoring paging;

– Otherwise, if the measured RTT is less than (or equal to) the RTT threshold corresponding to DL carrier 2, and the measured (N) RSRP is greater than (or equal to) the (N) RSRP threshold corresponding to DL carrier 2, then the UE selects DL carrier 2 to monitor paging carrier wave;

–…

– Otherwise, if the measured RTT is less than (or equal to) the RTT threshold corresponding to DL carrier N, and the measured (N) RSRP is greater than (or equal to) the (N) RSRP threshold corresponding to DL carrier N, then the UE selects DL carrier N for monitoring paging carrier.

Mode 2-2: As long as one of RSRP and RTT satisfies the condition, the corresponding DL carrier can be selected.

– If the measured RTT is less than (or equal to) the RTT threshold corresponding to DL carrier 1, or the measured (N) RSRP is greater than (or equal to) the (N) RSRP threshold corresponding to DL carrier 1, then the UE selects DL carrier 1 as the carrier to monitor paging ;

– Otherwise, if the measured RTT is less than (or equal to) the RTT threshold corresponding to DL carrier 2, or the measured (N) RSRP is greater than (or equal to) the (N) RSRP threshold corresponding to DL carrier 2, then the UE selects DL carrier 2 to monitor paging carrier wave;

–…

– Otherwise, if the measured RTT is less than (or equal to) the RTT threshold corresponding to DL carrier N, or the measured (N) RSRP is greater than (or equal to) the (N) RSRP threshold corresponding to DL carrier N, then the UE selects DL carrier N for monitoring paging carrier.

Application example two

Figure 6 shows a schematic diagram of this application example.

The UE selects the paging carrier based on the distance between the UE and the cell coverage (center) ground reference point corresponding to the serving satellite, or based on the distance between the UE and the cell coverage (center) ground reference point combined with RSRP measurement results.

The specific implementation process is as follows:

1. The UE receives network configuration information and configures relevant parameters of Paging. Specifically include:

d) For each DL carrier and/or DL anchor carrier in the DL non-anchor carrier list, configure a distance threshold for DL carrier selection, and indicate at least one ground reference point location.

Mode 1: The UE selects the DL carrier for monitoring paging based on the distance measurement between itself and the cell coverage (center) ground reference point.

Specifically, the UE obtains its own position based on the positioning capability, and calculates the distance between itself and the ground reference point of the cell according to its own position and the position of the ground reference point configured by the network, which is recorded as measured d.

– If measured d is less than (or equal to) the distance threshold corresponding to DL carrier 1, the UE selects DL carrier 1 as the carrier for monitoring paging;

– Otherwise, if measured d is less than (or equal to) the distance threshold corresponding to DL carrier 2, the UE selects DL carrier 2 as the carrier for monitoring paging;

–…

– Otherwise, if measured d is less than (or equal to) the distance threshold corresponding to DL carrier N, the UE selects DL carrier N as the carrier for monitoring paging.

Method 2: The UE selects the DL carrier for monitoring paging based on the distance measurement between itself and the cell coverage (center) ground reference point, and combined with the RSRP measurement.

Mode 2-1: RSRP and the distance between the UE and the cell coverage ground reference point meet the conditions at the same time, then the corresponding DL carrier can be selected.

– If the measured d is less than (or equal to) the distance threshold corresponding to DL carrier 1, and the measured (N) RSRP is greater than (or equal to) the (N) RSRP threshold corresponding to DL carrier 1, then the UE selects DL carrier 1 as the carrier to monitor paging ;

– Otherwise, if the measured d is less than (or equal to) the distance threshold corresponding to DL carrier 2, and the measured (N) RSRP is greater than (or equal to) the (N) RSRP threshold corresponding to DL carrier 2, then the UE selects DL carrier 2 as the monitoring paging carrier wave;

–…

– Otherwise, if the measured d is less than (or equal to) the distance threshold corresponding to DL carrier N, and the measured (N) RSRP is greater than (or equal to) the (N) RSRP threshold corresponding to DL carrier N, then the UE selects DL carrier N as the monitoring paging carrier.

Mode 2-2: As long as one of the RSRP and the distance between the UE and the cell coverage ground reference point satisfies the condition, the corresponding DL carrier can be selected.

– If the measured d is less than (or equal to) the distance threshold corresponding to DL carrier 1, or the measured (N) RSRP is greater than (or equal to) the (N) RSRP threshold corresponding to DL carrier 1, then the UE selects DL carrier 1 as the carrier to monitor paging ;

– Otherwise, if the measured d is less than (or equal to) the distance threshold corresponding to DL carrier 2, or the measured (N) RSRP is greater than (or equal to) the (N) RSRP threshold corresponding to DL carrier 2, then the UE selects DL carrier 2 as the monitoring paging carrier wave;

–…

– Otherwise, if the measured d is less than (or equal to) the distance threshold corresponding to DL carrier N, or the measured (N) RSRP is greater than (or equal to) the (N) RSRP threshold corresponding to DL carrier N, then the UE selects DL carrier N to monitor paging carrier.

Application example three

Figure 7 shows a schematic diagram of this application example.

The UE selects the paging carrier based on the elevation angle from the UE to the satellite, or based on the elevation angle from the UE to the satellite and combined with RSRP measurement results.

The specific implementation process is as follows:

d) For each DL carrier and/or DL anchor carrier in the DL non-anchor carrier list, configure an elevation angle threshold for DL carrier selection;

2. The UE determines the DL carrier to monitor paging, as follows:

Mode 1: The UE selects the DL carrier for monitoring paging based on its elevation angle to the serving satellite.

Specifically, the UE obtains its own position based on the positioning capability, obtains the position of the serving satellite of the current cell based on the ephemeris information, and calculates the elevation angle to the satellite based on its own position and the satellite position, which is recorded as measured angle.

– If the measured angle is greater than (or equal to) the elevation angle threshold corresponding to DL carrier 1, the UE selects DL carrier 1 as the carrier for monitoring paging;

– Otherwise, if the measured angle is greater than (or equal to) the elevation angle threshold corresponding to DL carrier 2, the UE selects DL carrier 2 as the carrier for monitoring paging;

–…

– Otherwise, if the measured angle is greater than (or equal to) the elevation angle threshold corresponding to DL carrier N, the UE selects DL carrier N as the carrier for monitoring paging.

Mode 2: The UE selects the DL carrier for monitoring paging based on the elevation angle measurement from itself to the serving satellite and combined with the RSRP measurement.

Mode 2-1: RSRP and the elevation angle from the UE to the satellite meet the conditions at the same time, then the corresponding DL carrier can be selected.

– If the measured angle is greater than (or equal to) the elevation angle threshold corresponding to DL carrier 1, and the measured (N) RSRP is greater than (or equal to) the (N) RSRP threshold corresponding to DL carrier 1, then the UE selects DL carrier 1 as the carrier to monitor paging ;

– Otherwise, if the measured angle is greater than (or equal to) the elevation angle threshold corresponding to DL carrier 2, and the measured (N) RSRP is greater than (or equal to) the (N) RSRP threshold corresponding to DL carrier 2, then the UE selects DL carrier 2 as the listening paging carrier wave;

–…

– Otherwise, if the measured angle is greater than (or equal to) the elevation angle threshold corresponding to DL carrier N, and the measured (N) RSRP is greater than (or equal to) the (N) RSRP threshold corresponding to DL carrier N, then the UE selects DL carrier N for monitoring paging carrier.

Method 2-2: As long as one of the RSRP and the elevation angle from the UE to the satellite satisfies the condition, the corresponding DL carrier can be selected.

– If the measured angle is greater than (or equal to) the elevation angle threshold corresponding to DL carrier 1, or the measured (N) RSRP is greater than (or equal to) the (N) RSRP threshold corresponding to DL carrier 1, then the UE selects DL carrier 1 as the carrier to monitor paging ;

– Otherwise, if the measured angle is greater than (or equal to) the elevation angle threshold corresponding to DL carrier 2, or the measured (N) RSRP is greater than (or equal to) the (N) RSRP threshold corresponding to DL carrier 2, then the UE selects DL carrier 2 as the listening paging carrier wave;

–…

– Otherwise, if the measured angle is greater than (or equal to) the elevation angle threshold corresponding to DL carrier N, or the measured (N) RSRP is greater than (or equal to) the (N) RSRP threshold corresponding to DL carrier N, then the UE selects DL carrier N for monitoring paging carrier.

The above describes the specific configuration and implementation of the embodiments of the present application from different perspectives through multiple embodiments. Using at least one of the above embodiments, the terminal device determines the carrier for monitoring paging according to the relative position measurement between itself and the serving satellite of the NTN, which can effectively guarantee the paging performance of the terminal.

Corresponding to the processing method in at least one of the foregoing embodiments, this embodiment of the present application further provides a terminal device 100, referring to FIG. 8 , which includes:

The first processing module 110 is configured to determine, among the N downlink carriers, a carrier for monitoring paging according to the first measurement quantity;

Optionally, the first measurement quantity includes at least one of the following measurement quantities:

the distance between the terminal device 100 and the serving satellite;

The wireless signal transmission delay between the terminal device 100 and the serving satellite;

RTT between the terminal device 100 and the serving satellite;

TA between the terminal equipment 100 and the serving satellite;

the distance between the terminal device 100 and the ground reference point corresponding to the serving satellite;

The elevation angle of the terminal device 100 to the serving satellite.

Optionally, the N downlink carriers include downlink anchor carriers and/or M downlink non-anchor carriers, where M is an integer greater than or equal to 1 and less than or equal to N.

Optionally, as shown in FIG. 9, the terminal device 100 further includes:

The first communication module 120 is configured for the terminal device 100 to receive first configuration information from the network device;

The first processing module 110 is further configured to determine the N downlink carriers and/or related information of the N downlink carriers according to the first configuration information.

Optionally, the first configuration information is used to configure at least one of the following information:

downlink anchor carrier;

Downlink non-anchor carrier list;

A first measurement threshold corresponding to each of the N downlink carriers;

Optionally, the first configuration information is carried by a system message.

Optionally, the system message includes SIBx, where x is an integer greater than or equal to 1.

Optionally, the first processing module 110 is specifically configured to:

If the second configuration information sent by the network device is not received, according to the first measurement quantity, determine the carrier used to monitor the paging among the N downlink carriers;

Optionally, the second configuration information is carried by broadcast information or terminal-specific signaling.

Optionally, the first processing module 110 is also used for:

When the second configuration information is received, the carrier for monitoring paging is determined according to the downlink carrier configured by the second configuration information.

Optionally, the first processing module 110 is also used for:

In the case of receiving the second configuration information, according to the maximum number of repeated transmissions of the paging PDCCH configured by the second configuration information and the maximum number of repeated transmissions of paging corresponding to each of the N downlink carriers, among the N downlink carriers Determine the carrier on which to listen for paging.

Optionally, the first processing module 110 is specifically configured to:

According to the first measurement quantity and the first measurement quantity threshold corresponding to each downlink carrier in the N downlink carriers, determine the carrier used to monitor the paging among the N downlink carriers.

Optionally, the first processing module 110 is specifically configured to:

When the size relationship between the first measurement amount and the first measurement amount threshold corresponding to the i-th downlink carrier in the N downlink carriers meets the preset size relationship, the i-th downlink carrier is determined to be used for monitoring and seeking call carrier;

Optionally, the first processing module 110 is specifically configured to:

According to the first measurement quantity and the RSRP, the carrier used for monitoring paging is determined among the N downlink carriers.

Optionally, the first processing module 110 is specifically configured to:

According to the first measurement quantity, the RSRP, the first measurement quantity threshold corresponding to each of the N downlink carriers, and the RSRP threshold, determine a carrier for monitoring paging among the N downlink carriers.

Optionally, the first processing module 110 is specifically configured to:

The size relationship between the first measurement amount and the first measurement amount threshold corresponding to the i-th downlink carrier among the N downlink carriers conforms to the preset size relationship and/or the RSRP is greater than the RSRP threshold corresponding to the i-th downlink carrier Next, the terminal device 100 determines the i-th downlink carrier as the carrier for monitoring paging;

Optionally, the order of the N downlink carriers is determined based on the maximum number of repeated paging transmissions corresponding to each downlink carrier.

Optionally, the order of the N downlink carriers is determined by sorting the maximum number of repeated paging transmissions corresponding to each downlink carrier from small to large.

Optionally, the first processing module 110 is also used for:

Based on the positioning information of the terminal device 100, the first measurement quantity is determined.

Optionally, the first processing module 110 is specifically configured to:

Determine the position of the serving satellite based on the ephemeris information;

Based on the positioning information of the terminal device 100 and the position of the serving satellite, the distance between the terminal device 100 and the serving satellite, the RTT between the terminal device 100 and the serving satellite, or the elevation angle from the terminal device 100 to the serving satellite are determined.

Optionally, the first processing module 110 is specifically configured to:

Based on the positioning information of the terminal device 100 and the position of the ground reference point corresponding to the serving satellite, the distance between the terminal device 100 and the ground reference point corresponding to the serving satellite is determined.

The terminal device 100 in the embodiment of the present application can realize the corresponding functions of the terminal device in the foregoing method embodiments, and the corresponding processes, functions, implementation methods and benefits of each module (submodule, unit or component, etc.) in the terminal device 100 For effects, refer to the corresponding descriptions in the foregoing method embodiments, and details are not repeated here. It should be noted that the functions described by the various modules (submodules, units or components, etc.) in the terminal device 100 in the embodiment of the present application may be implemented by different modules (submodules, units or components, etc.), or may be implemented by the same One module (submodule, unit or component, etc.) realizes, for example, the first sending module and the second sending module can be different modules, also can be the same module, all can realize its in the embodiment of the present application corresponding function. In addition, the communication module in the embodiment of the present application may be implemented by a transceiver of the device, and part or all of the other modules may be implemented by a processor of the device.

Fig. 10 is a schematic block diagram of a network device 200 according to an embodiment of the present application. The network device 200 may include:

The second communication module 210 is configured to send the first configuration information to the terminal device;

downlink anchor carrier;

Downlink non-anchor carrier list;

A first measurement threshold corresponding to each of the N downlink carriers;

The ground reference point location of the serving satellite.

Optionally, the first configuration information is carried by a system message.

Optionally, the second communication module 210 is also used for:

Sending second configuration information to the terminal device; wherein, the second configuration information is used to configure the downlink carrier on which the terminal monitors paging and/or the maximum number of repeated paging PDCCH transmissions corresponding to the downlink carrier on which the terminal monitors paging.

Optionally, the second configuration information is used to instruct the terminal device to determine a carrier for monitoring paging according to the carrier configured in the second configuration information.

Optionally, the second configuration information is used to indicate the maximum number of repeated paging PDCCH transmissions configured by the terminal device according to the second configuration information and the maximum number of repeated paging transmissions corresponding to each of the N downlink carriers. Determine the carrier used to monitor paging among the carriers.

The network device 200 in the embodiment of the present application can implement the corresponding functions of the network device in the foregoing method embodiments. For the processes, functions, implementations and beneficial effects corresponding to each module (submodule, unit or component, etc.) in the network device 200, refer to the corresponding description in the above method embodiment, and details are not repeated here. It should be noted that the functions described by the modules (submodules, units or components, etc.) in the network device 200 of the embodiment of the application can be realized by different modules (submodules, units or components, etc.), or by the same module (submodule, unit or component, etc.), for example, the first sending module and the second sending module can be different modules, or the same module, all of which can realize their corresponding functions in the embodiments of the present application. Function. In addition, the communication module in the embodiment of the present application may be implemented by a transceiver of the device, and part or all of the other modules may be implemented by a processor of the device.

Fig. 11 is a schematic structural diagram of a communication device 600 according to an embodiment of the application, wherein the communication device 600 includes a processor 610, and the processor 610 can call and run a computer program from a memory to implement the method in the embodiment of the application.

Optionally, the communication device 600 may further include a memory 620 . Wherein, the processor 610 can invoke and run a computer program from the memory 620, so as to implement the method in the embodiment of the present application.

Wherein, the memory 620 may be an independent device independent of the processor 610 , or may be integrated in the processor 610 .

Optionally, the communication device 600 may further include a transceiver 630, and the processor 610 may control the transceiver 630 to communicate with other devices, specifically, to send information or data to other devices, or to receive information or data sent by other devices .

Wherein, the transceiver 630 may include a transmitter and a receiver. The transceiver 630 may further include antennas, and the number of antennas may be one or more.

Optionally, the communication device 600 may be the network device of the embodiment of the present application, and the communication device 600 may implement the corresponding processes implemented by the network device in the methods of the embodiment of the present application. For the sake of brevity, details are not repeated here.

Optionally, the communication device 600 may be the terminal device of the embodiment of the present application, and the communication device 600 may implement the corresponding processes implemented by the terminal device in the methods of the embodiment of the present application. For the sake of brevity, details are not repeated here.

Fig. 12 is a schematic structural diagram of a chip 700 according to an embodiment of the present application, wherein the chip 700 includes a processor 710, and the processor 710 can call and run a computer program from a memory to implement the method in the embodiment of the present application.

Optionally, the chip 700 may further include a memory 720 . Wherein, the processor 710 can invoke and run a computer program from the memory 720, so as to implement the method in the embodiment of the present application.

Wherein, the memory 720 may be an independent device independent of the processor 710 , or may be integrated in the processor 710 .

Optionally, the chip 700 may also include an input interface 730 . Wherein, the processor 710 can control the input interface 730 to communicate with other devices or chips, specifically, can obtain information or data sent by other devices or chips.

Optionally, the chip 700 may also include an output interface 740 . Wherein, the processor 710 can control the output interface 740 to communicate with other devices or chips, specifically, can output information or data to other devices or chips.

Optionally, the chip can be applied to the network device in the embodiment of the present application, and the chip can implement the corresponding processes implemented by the network device in the methods of the embodiment of the present application. For the sake of brevity, details are not repeated here.

Optionally, the chip can be applied to the terminal device in the embodiments of the present application, and the chip can implement the corresponding processes implemented by the terminal device in the methods of the embodiments of the present application. For the sake of brevity, details are not repeated here.

It should be understood that the chip mentioned in the embodiment of the present application may also be called a system-on-chip, a system-on-chip, a system-on-a-chip, or a system-on-a-chip.

The processor mentioned above can be a general-purpose processor, a digital signal processor (DSP), an off-the-shelf programmable gate array (FPGA), an application specific integrated circuit (ASIC) or Other programmable logic devices, transistor logic devices, discrete hardware components, etc. Wherein, the general-purpose processor mentioned above may be a microprocessor or any conventional processor or the like.

The aforementioned memories may be volatile memories or nonvolatile memories, or may include both volatile and nonvolatile memories. Among them, the non-volatile memory can be read-only memory (read-only memory, ROM), programmable read-only memory (programmable ROM, PROM), erasable programmable read-only memory (erasable PROM, EPROM), electrically programmable Erases programmable read-only memory (electrically EPROM, EEPROM) or flash memory. The volatile memory may be random access memory (RAM).

It should be understood that the above-mentioned memory is illustrative but not restrictive. For example, the memory in the embodiment of the present application may also be a static random access memory (static RAM, SRAM), a dynamic random access memory (dynamic RAM, DRAM), Synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous connection Dynamic random access memory (synch link DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DR RAM), etc. That is, the memory in the embodiments of the present application is intended to include, but not be limited to, these and any other suitable types of memory.

FIG. 13 is a schematic block diagram of a communication system 800 according to an embodiment of the present application, and the communication system 800 includes a terminal device 810 and a network device 820 .

The network device 820 sends the first configuration information to the terminal device 810, where the first configuration information is used by the terminal device 810 to determine the N downlink carriers and/or related information of the N downlink carriers.

The terminal device 810 determines a carrier for monitoring paging among the N downlink carriers according to the first measurement quantity;

Wherein, the terminal device 810 can be used to realize the corresponding functions realized by the terminal device in the methods of the various embodiments of the present application, and the network device 820 can be used to realize the corresponding functions realized by the network device in the methods of the various embodiments of the present application function. For the sake of brevity, details are not repeated here.

In the above embodiments, all or part of them may be implemented by software, hardware, firmware or any combination thereof. When implemented using software, it may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on the computer, the processes or functions according to the embodiments of the present application will be generated in whole or in part. The computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable device. The computer instructions may be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transferred from a website, computer, server, or data center by wire (such as coaxial cable, optical fiber, digital subscriber line (Digital Subscriber Line, DSL)) or wireless (such as infrared, wireless, microwave, etc.) to another website site, computer, server or data center. The computer-readable storage medium may be any available medium that can be accessed by a computer, or a data storage device such as a server or a data center integrated with one or more available media. The available medium may be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, a DVD), or a semiconductor medium (for example, a solid state disk (SSD)).

It should be understood that, in various embodiments of the present application, the sequence numbers of the above-mentioned processes do not mean the order of execution, and the execution order of the processes should be determined by their functions and internal logic, and should not be used in the embodiments of the present application. The implementation process constitutes any limitation.

Those skilled in the art can clearly understand that for the convenience and brevity of the description, the specific working process of the above-described system, device and unit can refer to the corresponding process in the foregoing method embodiment, which will not be repeated here.

The above is only the specific implementation of the application, but the scope of protection of the application is not limited thereto. Anyone familiar with the technical field can easily think of changes or replacements within the technical scope disclosed in the application, and should be covered Within the protection scope of this application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

A method of determining a paging carrier, comprising:

The terminal device determines a carrier for monitoring paging among the N downlink carriers according to the first measurement quantity;

Wherein, the first measurement quantity is related to the relative position between the terminal device and the serving satellite of the non-terrestrial network NTN, and N is an integer greater than or equal to 1.
The method of claim 1, wherein the first measurement comprises at least one of the following measurements:

the distance between the terminal device and the serving satellite;

wireless signal transmission delay between the terminal device and the serving satellite;

a round-trip time RTT between the terminal device and the serving satellite;

a timing advance TA between the terminal device and the serving satellite;

the distance between the terminal device and the ground reference point corresponding to the serving satellite;

The elevation angle from the terminal device to the serving satellite.
The method according to claim 1 or 2, wherein the N downlink carriers include downlink anchor carriers and/or M downlink non-anchor carriers, and M is an integer greater than or equal to 1 and less than or equal to N.
The method according to any one of claims 1-3, wherein the method further comprises:

The terminal device receives the first configuration information from the network device, and determines the N downlink carriers and/or related information of the N downlink carriers according to the first configuration information.
The method according to claim 4, wherein the first configuration information is used to configure at least one of the following information:

downlink anchor carrier;

Downlink non-anchor carrier list;

The maximum number of repeated paging transmissions corresponding to each of the N downlink carriers;

A first measurement threshold corresponding to each of the N downlink carriers;

A reference signal received power RSRP threshold corresponding to each of the N downlink carriers;

The location of the ground reference point corresponding to the serving satellite.
The method according to claim 4 or 5, wherein the first configuration information is carried by a system message.
The method according to claim 6, wherein the system message includes a system information block SIBx, and x is an integer greater than or equal to 1.
The method according to any one of claims 1-7, wherein the terminal device determines a carrier for monitoring paging among N downlink carriers according to the first measurement quantity, including:

In the case that the second configuration information sent by the network device is not received, the terminal device determines the carrier for monitoring paging among the N downlink carriers according to the first measurement quantity;

Wherein, the second configuration information is used to configure the downlink carrier on which the terminal monitors paging and/or the maximum number of repeated transmission times of the paging PDCCH corresponding to the downlink carrier on which the terminal monitors paging.
The method according to claim 8, wherein the second configuration information is carried by broadcast information or terminal-specific signaling.
The method according to claim 8 or 9, wherein the method further comprises:

When receiving the second configuration information, the terminal device determines the carrier for monitoring paging according to the downlink carrier configured by the second configuration information.
The method according to claim 8 or 9, wherein the method further comprises:

In the case of receiving the second configuration information, the terminal device configures the maximum number of repeated transmissions of the paging PDCCH according to the second configuration information and the maximum number of paging corresponding to each of the N downlink carriers. Repeat the number of transmissions, and determine the carrier used to monitor paging among the N downlink carriers.
The method according to any one of claims 1-11, wherein the terminal device determines a carrier for monitoring paging among N downlink carriers according to the first measurement quantity, including:

The terminal device determines, among the N downlink carriers, a carrier for monitoring paging according to the first measurement amount and a first measurement amount threshold corresponding to each of the N downlink carriers.
The method according to claim 12, wherein the terminal device performs the measurement on the N downlink carriers according to the first measurement amount and the first measurement amount threshold corresponding to each of the N downlink carriers. Determine the carrier used to monitor paging, including:

When the size relationship between the first measurement amount and the first measurement amount threshold corresponding to the i-th downlink carrier in the N downlink carriers conforms to the preset size relationship, the terminal device will use the first measurement amount threshold i downlink carriers are determined as the carriers used for monitoring paging;

Wherein, i is an integer greater than or equal to 1 and less than or equal to N.
The method according to any one of claims 1-11, wherein the terminal device determines a carrier for monitoring paging among N downlink carriers according to the first measurement quantity, including:

The terminal device determines, among the N downlink carriers, a carrier for monitoring paging according to the first measurement amount and the RSRP.
The method according to claim 14, wherein the terminal device determines a carrier for monitoring paging among the N downlink carriers according to the first measurement amount and RSRP, comprising:

According to the first measurement quantity, the RSRP, the first measurement quantity threshold corresponding to each of the N downlink carriers and the RSRP threshold, the terminal device determines the Listen to the carrier for paging.
The method according to claim 15, wherein the terminal device according to the first measurement quantity, the RSRP, the first measurement quantity threshold corresponding to each of the N downlink carriers and the RSRP threshold, Determining a carrier for monitoring paging among the N downlink carriers includes:

The size relationship between the first measurement amount and the first measurement amount threshold corresponding to the i-th downlink carrier among the N downlink carriers conforms to a preset size relationship, and/or the RSRP is greater than or equal to the first measurement amount threshold In the case of the RSRP threshold corresponding to the i downlink carrier, the terminal device determines the ith downlink carrier as the carrier for monitoring paging;

Wherein, i is an integer greater than or equal to 1 and less than or equal to N.
The method according to any one of claims 12-16, wherein the order of the N downlink carriers is determined based on the maximum number of repeated paging transmissions corresponding to each of the N downlink carriers.
The method according to claim 17, wherein the order of the N downlink carriers is determined by sorting the maximum number of repeated paging transmissions corresponding to each downlink carrier from small to large.
The method according to any one of claims 1-18, wherein the method further comprises:

The terminal device determines the first measurement amount based on the positioning information of the terminal device.
The method according to claim 19, wherein the terminal device determines the first measurement quantity based on the positioning information of the terminal device, comprising:

The terminal device determines the position of the serving satellite based on the ephemeris information;

The terminal device determines the distance between the terminal device and the serving satellite, the RTT between the terminal device and the serving satellite, or the The elevation angle from the terminal device to the serving satellite.
The method according to claim 19, wherein the terminal device determines the first measurement quantity based on the positioning information of the terminal device, comprising:

The terminal device determines the distance between the terminal device and the ground reference point corresponding to the serving satellite based on the positioning information of the terminal device and the position of the ground reference point corresponding to the serving satellite.
A method of determining a paging carrier, comprising:

The network device sends the first configuration information to the terminal device;

Wherein, the first configuration information is used for the terminal device to determine N downlink carriers and/or related information of the N downlink carriers, so as to determine the N downlink carriers used for monitoring according to the first measurement quantity The paging carrier; wherein, the first measurement quantity is related to the relative position between the terminal device and the serving satellite of the non-terrestrial network NTN, and N is an integer greater than or equal to 1.
The method according to claim 22, wherein the first configuration information is used to configure at least one of the following information:

downlink anchor carrier;

Downlink non-anchor carrier list;

The maximum number of repeated paging transmissions corresponding to each of the N downlink carriers;

A first measurement threshold corresponding to each of the N downlink carriers;

A reference signal received power RSRP threshold corresponding to each of the N downlink carriers;

The ground reference point location of the serving satellite.
The method according to claim 22 or 23, wherein the first configuration information is carried by a system message.
The method according to claim 24, wherein the system message includes a system information block SIBx, and x is an integer greater than or equal to 1.
The method according to any one of claims 22-25, wherein the method further comprises:

The network device sends second configuration information to the terminal device; wherein, the second configuration information is used to configure the downlink carrier on which the terminal monitors paging and/or the maximum number of repeated transmission times of the paging PDCCH corresponding to the downlink carrier on which the terminal monitors paging .
The method according to claim 26, wherein the second configuration information is used to instruct the terminal device to configure the carrier according to the second configuration information, and to determine the carrier for monitoring paging.
The method according to claim 26, wherein the second configuration information is used to indicate the maximum number of repeated transmissions of the paging PDCCH configured by the terminal device according to the second configuration information and the number of times each of the N downlink carriers The maximum number of repeated paging transmissions corresponding to the downlink carrier, and the carrier used to monitor the paging is determined among the N downlink carriers.
The method according to any one of claims 26-28, wherein the second configuration information is carried by broadcast information or terminal-specific signaling.
A terminal device comprising:

A first processing module, configured to determine a carrier for monitoring paging among N downlink carriers according to the first measurement quantity;

Wherein, the first measurement quantity is related to the relative position between the terminal device and the serving satellite of the NTN, and N is an integer greater than or equal to 1.
The terminal device according to claim 30, wherein the first measurement quantity includes at least one of the following measurement quantities:

the distance between the terminal device and the serving satellite;

wireless signal transmission delay between the terminal device and the serving satellite;

RTT between said terminal device and said serving satellite;

TA between the terminal device and the serving satellite;

the distance between the terminal device and the ground reference point corresponding to the serving satellite;

The elevation angle from the terminal device to the serving satellite.
The terminal device according to claim 30 or 31, wherein the N downlink carriers include a downlink anchor carrier and/or M downlink non-anchor carriers, and M is an integer greater than or equal to 1 and less than or equal to N.
The terminal device according to any one of claims 30-32, wherein the terminal device further comprises:

A first communication module, configured for the terminal device to receive first configuration information from a network device;

The first processing module is further configured to determine the N downlink carriers and/or related information of the N downlink carriers according to the first configuration information.
The terminal device according to claim 33, wherein the first configuration information is used to configure at least one of the following information:

downlink anchor carrier;

Downlink non-anchor carrier list;

The maximum number of repeated paging transmissions corresponding to each of the N downlink carriers;

A first measurement threshold corresponding to each of the N downlink carriers;

an RSRP threshold corresponding to each of the N downlink carriers;

The location of the ground reference point corresponding to the serving satellite.
The terminal device according to claim 33 or 34, wherein the first configuration information is carried by a system message.
The terminal device according to claim 35, wherein the system message includes SIBx, and x is an integer greater than or equal to 1.
The terminal device according to any one of claims 30-36, wherein the first processing module is specifically configured to:

If the second configuration information sent by the network device is not received, according to the first measurement quantity, determine the carrier used to monitor the paging among the N downlink carriers;

Wherein, the second configuration information is used to configure the downlink carrier on which the terminal monitors paging and/or the maximum number of repeated transmission times of the paging PDCCH corresponding to the downlink carrier on which the terminal monitors paging.
The terminal device according to claim 37, wherein the second configuration information is carried by broadcast information or terminal-specific signaling.
The terminal device according to claim 37 or 38, wherein the first processing module is further configured to:

If the second configuration information is received, the carrier for monitoring paging is determined according to the downlink carrier configured by the second configuration information.
The terminal device according to claim 37 or 38, wherein the first processing module is further configured to:

In the case of receiving the second configuration information, according to the maximum number of repeated transmissions of the paging PDCCH configured by the second configuration information and the maximum number of repeated transmissions of paging corresponding to each of the N downlink carriers, A carrier for monitoring paging is determined among the N downlink carriers.
The terminal device according to any one of claims 30-40, wherein the first processing module is specifically configured to:

According to the first measurement amount and the first measurement amount threshold corresponding to each of the N downlink carriers, determine a carrier for monitoring paging among the N downlink carriers.
The terminal device according to claim 41, wherein the first processing module is specifically configured to:

When the size relationship between the first measurement amount and the first measurement amount threshold corresponding to the i-th downlink carrier among the N downlink carriers conforms to the preset size relationship, the i-th downlink carrier Determined as the carrier used for monitoring paging;

Wherein, i is an integer greater than or equal to 1 and less than or equal to N.
The terminal device according to any one of claims 30-42, wherein the first processing module is specifically configured to:

According to the first measurement quantity and the RSRP, the carrier used for monitoring paging is determined among the N downlink carriers.
The terminal device according to claim 43, wherein the first processing module is specifically configured to:

According to the first measurement quantity, the RSRP, the first measurement quantity threshold corresponding to each downlink carrier in the N downlink carriers, and the RSRP threshold, determine in the N downlink carriers the paging monitoring carrier.
The terminal device according to claim 44, wherein the first processing module is specifically configured to:

The size relationship between the first measurement amount and the first measurement amount threshold corresponding to the i-th downlink carrier among the N downlink carriers conforms to a preset size relationship, and/or the RSRP is greater than or equal to the first measurement amount threshold In the case of the RSRP threshold corresponding to the i downlink carrier, the terminal device determines the ith downlink carrier as the carrier for monitoring paging;

Wherein, i is an integer greater than or equal to 1 and less than or equal to N.
The terminal device according to any one of claims 41-45, wherein the order of the N downlink carriers is determined based on the maximum number of repeated paging transmissions corresponding to each of the N downlink carriers .
The terminal device according to claim 46, wherein the order of the N downlink carriers is determined by sorting the maximum number of repeated paging transmissions corresponding to each downlink carrier from small to large.
The terminal device according to any one of claims 30-47, wherein the first processing module is further configured to:

The first measurement quantity is determined based on the positioning information of the terminal device.
The terminal device according to claim 48, wherein the first processing module is specifically configured to:

determining the position of the serving satellite based on the ephemeris information;

Based on the positioning information of the terminal device and the position of the serving satellite, determine the distance between the terminal device and the serving satellite, the RTT between the terminal device and the serving satellite, or the distance between the terminal device and the serving satellite The elevation angle of the serving satellite.
The terminal device according to claim 48, wherein the first processing module is specifically configured to:

Based on the positioning information of the terminal device and the position of the ground reference point corresponding to the serving satellite, the distance between the terminal device and the ground reference point corresponding to the serving satellite is determined.
A network device comprising:

A second communication module, configured to send the first configuration information to the terminal device;

Wherein, the first configuration information is used for the terminal device to determine N downlink carriers and/or related information of the N downlink carriers, so as to determine the N downlink carriers used for monitoring according to the first measurement quantity A paging carrier; wherein, the first measurement quantity is related to the relative position between the terminal device and the serving satellite of the NTN, and N is an integer greater than or equal to 1.
The network device according to claim 51, wherein the first configuration information is used to configure at least one of the following information:

downlink anchor carrier;

Downlink non-anchor carrier list;

The maximum number of repeated paging transmissions corresponding to each of the N downlink carriers;

A first measurement threshold corresponding to each of the N downlink carriers;

an RSRP threshold corresponding to each of the N downlink carriers;

The ground reference point location of the serving satellite.
The network device according to claim 51 or 52, wherein the first configuration information is carried by a system message.
The network device according to claim 53, wherein the system message includes SIBx, and x is an integer greater than or equal to 1.
The network device according to any one of claims 51-54, wherein the second communication module is further configured to:

Sending second configuration information to the terminal device; wherein the second configuration information is used to configure the downlink carrier on which the terminal monitors paging and/or the maximum number of times of paging PDCCH repeated transmission corresponding to the downlink carrier on which the terminal monitors paging.
The network device according to claim 55, wherein the second configuration information is used to instruct the terminal device to determine the carrier for monitoring paging according to the carrier configured by the second configuration information.
The network device according to claim 55, wherein the second configuration information is used to indicate the maximum number of repeated transmission times of the paging PDCCH configured by the terminal device according to the second configuration information and the The maximum number of paging retransmissions corresponding to the N downlink carriers, and the carrier used to monitor the paging is determined among the N downlink carriers.
The network device according to any one of claims 55-57, wherein the second configuration information is carried by broadcast information or terminal-specific signaling.
A terminal device, comprising: a processor and a memory, the memory is used to store a computer program, and the processor calls and runs the computer program stored in the memory, and executes the computer program described in any one of claims 1 to 21 steps of the method.
A network device, comprising: a processor and a memory, the memory is used to store computer programs, the processor invokes and runs the computer programs stored in the memory, and executes the computer program described in any one of claims 21 to 29 steps of the method.
A chip comprising:

The processor is used to call and run the computer program from the memory, so that the device installed with the chip executes the steps of the method according to any one of claims 1 to 29.
A computer-readable storage medium for storing a computer program, wherein,

The computer program causes a computer to carry out the steps of the method as claimed in any one of claims 1 to 29.
A computer program product comprising computer program instructions, wherein,

The computer program instructions cause a computer to perform the steps of the method as claimed in any one of claims 1 to 29.
A computer program that causes a computer to carry out the steps of the method as claimed in any one of claims 1 to 29.