WO2023065171A1

WO2023065171A1 - Data transmission method and apparatus, device, and storage medium

Info

Publication number: WO2023065171A1
Application number: PCT/CN2021/125069
Authority: WO
Inventors: 胡奕; 李海涛; 于新磊
Original assignee: Oppo广东移动通信有限公司
Priority date: 2021-10-20
Filing date: 2021-10-20
Publication date: 2023-04-27
Also published as: CN117643108A

Abstract

A data transmission method and apparatus, a device, and a storage medium, relating to the technical field of wireless communication. The method comprises: determining a data transmission mode (301) of the terminal according to location-related information of the terminal, wherein the data transmission mode comprises small data transmission (SDT) or non-small data transmission, the location-related information is used for indicating at least one of the location relationship between the terminal and a service satellite, and the location relationship between the terminal and a serving cell, the serving cell is an NTN cell, and the service satellite is a satellite corresponding to the serving cell. The solution avoids the problem of wrong transmission mode selection caused by using an RSRP measurement value to select SDT and non-SDT, such that the accuracy of SDT/non-SDT selection in an NTN system is improved, thereby improving the accuracy of data transmission in the NTN system.

Description

Data transmission processing method, device, equipment and storage medium

technical field

The present application relates to the technical field of wireless communication, and in particular to a data transmission processing method, device, terminal and storage medium.

Background technique

Small Data Transmission (SDT) is a technology based on energy-saving considerations that enables the terminal to perform data transmission in the RRC_IDLE state (ie idle state) or RRC_INACTIVE state (ie inactive state).

In the small data transmission technology, in order to ensure the success rate of data transmission, it is proposed in related technologies that when the terminal has small data transmission requirements in the RRC_IDLE state or RRC_INACTIVE state, the Reference Signal Receiving Power (RSRP) of the terminal is used. The measured value determines whether the data transfer is carried out with the small data transfer method.

However, the scheme of determining whether to adopt small data transmission through the RSRP measurement value is not suitable for a non-terrestrial communication network (Non-Terrestrial Network, NTN) system.

Contents of the invention

Embodiments of the present application provide a data transmission processing method, device, device, and storage medium. The technical solution is as follows:

On the one hand, an embodiment of the present application provides a data transmission processing method, the method is executed by a terminal, and the method includes:

Determine the data transmission mode of the terminal according to the location-related information of the terminal; the data transmission mode includes small data transmission or non-small data transmission;

Wherein, the position-related information is used to indicate the positional relationship between the terminal and the serving satellite, and at least one of the positional relationship between the terminal and the serving cell; the serving cell is an NTN cell; the The serving satellite is a satellite corresponding to the serving cell.

On the one hand, the embodiment of the present application provides a data transmission processing method, executed by a network side device, including:

Sending network configuration information to the terminal, the network configuration information including condition parameters in the location condition;

Wherein, the location condition is a condition for the terminal to determine the data transmission mode of the terminal according to the location-related information; the data transmission method includes small data transmission or non-small data transmission; the location-related information is used to indicate the The positional relationship between the terminal and the serving satellite, and at least one of the positional relationship between the terminal and the serving cell; the serving cell is an NTN cell; the serving satellite corresponds to the serving cell satellite.

On the other hand, an embodiment of the present application provides a data transmission processing device, the device comprising:

A transmission mode determining module, configured to determine a data transmission mode of the terminal according to the location-related information of the terminal; the data transmission mode includes small data transmission or non-small data transmission;

A sending module, configured to send network configuration information to the terminal, where the network configuration information includes condition parameters in the location condition;

In another aspect, an embodiment of the present application provides a computer device, the computer device includes a processor, a memory, and a transceiver, the memory stores a computer program, and the computer program is used to be executed by the processor to The above data transmission processing method is realized.

In yet another aspect, an embodiment of the present application further provides a computer-readable storage medium, where a computer program is stored in the storage medium, and the computer program is loaded and executed by a processor to implement the above data transmission processing method.

In another aspect, a computer program product or computer program is provided, the computer program product or computer program comprising computer instructions stored in a computer readable storage medium. The processor of the computer device reads the computer instruction from the computer-readable storage medium, and the processor executes the computer instruction, so that the computer device executes the above data transmission processing method.

The technical solutions provided in the embodiments of the present application can bring the following beneficial effects:

For the NTN serving cell, the terminal can determine whether to use SDT or non-SDT according to the positional relationship with respect to the serving cell and/or the serving satellite, thus avoiding the problems caused by the selection of SDT and non-SDT based on the RSRP measurement value. The wrong choice of transmission mode improves the accuracy of SDT/non-SDT selection in the NTN system, thereby improving the accuracy of data transmission in the NTN system.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings that need to be used in the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application. For those skilled in the art, other drawings can also be obtained based on these drawings without creative effort.

FIG. 1 is a schematic diagram of a network architecture of a communication system provided by an embodiment of the present application;

Fig. 2 is a network architecture diagram of the NTN system provided by one embodiment of the present application;

FIG. 3 is a flowchart of a data transmission processing method provided by an embodiment of the present application;

FIG. 4 is a flowchart of a data transmission processing method provided by an embodiment of the present application;

FIG. 5 is a flowchart of a data transmission processing method provided by an embodiment of the present application;

Fig. 6 is a schematic diagram of transmission mode selection involved in the embodiment shown in Fig. 5;

FIG. 7 is a schematic diagram of another transmission mode selection involved in the embodiment shown in FIG. 5;

Fig. 8 is a schematic diagram of a transmission mode selection related to the embodiment shown in Fig. 5;

FIG. 9 is a method flowchart of a data transmission processing method provided by an embodiment of the present application;

FIG. 10 is a block diagram of a data transmission processing device provided by an embodiment of the present application;

Fig. 11 is a block diagram of a data transmission processing device provided by an embodiment of the present application;

Fig. 12 is a schematic structural diagram of a computer device provided by an embodiment of the present application;

Fig. 13 is a schematic structural diagram of a computer device provided by an embodiment of the present application.

Detailed ways

In order to make the purpose, technical solution and advantages of the present application clearer, the implementation manners of the present application will be further described in detail below in conjunction with the accompanying drawings.

The network architecture and business scenarios described in the embodiments of the present application are for more clearly illustrating the technical solutions of the embodiments of the present application, and do not constitute limitations on the technical solutions provided by the embodiments of the present application. The evolution of the technology and the emergence of new business scenarios, the technical solutions provided in the embodiments of this application are also applicable to similar technical problems.

Please refer to FIG. 1 , which shows a schematic diagram of a network architecture of a communication system provided by an embodiment of the present application. The network architecture may include: a terminal 10 and a base station 20 .

The number of terminals 10 is generally multiple, and one or more terminals 10 may be distributed in a cell managed by each base station 20 . The terminal 10 may include various handheld devices with wireless communication functions, vehicle-mounted devices, wearable devices, computing devices or other processing devices connected to a wireless modem, as well as various forms of user equipment (User Equipment, UE), mobile station ( Mobile Station, MS), terminal device (terminal device) and so on. For convenience of description, in the embodiment of the present application, the above-mentioned devices are collectively referred to as terminals.

The base station 20 is a device deployed in an access network to provide a wireless communication function for the terminal 10 . The base station 20 may include various forms of satellite base stations, macro base stations, micro base stations, relay stations, access points and so on. In systems using different wireless access technologies, the names of devices with base station functions may be different. For example, in the 5G (5th Generation, fifth-generation mobile communication technology) new air interface (New Radio, NR) system, It is called gNodeB or gNB. The name "base station" may change as communication technology evolves. For the convenience of description, in the embodiment of the present application, the above-mentioned devices that provide the wireless communication function for the terminal 20 are collectively referred to as base stations.

Optionally, what is not shown in FIG. 1 is that the above-mentioned network architecture also includes other network devices, such as: a central control node (Central Network Control, CNC), an access and mobility management function (Access and Mobility Management Function, AMF ) device, session management function (Session Management Function, SMF) or user plane function (User Plane Function, UPF) device, etc.

The "5G NR system" in the embodiments of the present disclosure may also be called a 5G system or an NR system, but those skilled in the art can understand its meaning. The technical solutions described in the embodiments of the present disclosure can be applied to the 5G NR system, and can also be applied to the subsequent evolution system of the 5G NR system, or can also be applied to the system before the 5G NR system, such as Long Term Evolution (LTE) system.

Before introducing the solutions shown in the subsequent embodiments of the present application, several terms and concepts involved in the present application are introduced.

1) 5G NR system

The 5G NR system is a new generation of wireless communication system proposed based on users' requirements for wireless communication speed, delay, high-speed mobility, and energy efficiency, as well as the diversity and complexity of wireless communication services in future life. The main application scenarios of the 5G system are: Enhanced Mobile Broadband (eMBB), Ultra-reliable and Low Latency Communications (URLLC), Massive Machine Type Communication (mMTC) ).

In the 5G network environment, in order to reduce air interface signaling and quickly restore wireless connections and data services, a new Radio Resource Control (RRC) state is defined, namely the RRC_INACTIVE state. The state is different from RRC idle state (RRC_IDLE) and RRC connected state (RRC_ACTIVE). The above three RRC states are as follows:

RRC_IDLE: Mobility is UE-based cell selection and reselection, paging is initiated by CN, paging area is configured by CN, there is no UE AS context on the base station side, and there is no RRC connection between UE and base station.

RRC_CONNECTED: There is an RRC connection between the UE and the base station, and there is a UE AS context between the base station and the UE. The network side knows the location of the UE at the specific cell level. Mobility is mobility controlled by the network side. Unicast data can be transmitted between the UE and the base station.

RRC_INACTIVE: Mobility is UE-based cell selection and reselection, there is a connection between CN-NR, UE AS context exists on a base station, paging is triggered by Radio Access Network (RAN), and RAN-based The paging area is managed by the RAN, and the network side knows the location of the UE based on the paging area level of the RAN.

2) Non-terrestrial network (Non Terrestrial Network, NTN)

At present, relevant standard organizations are studying NTN technology, and NTN generally uses 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 the user's region. For example, general land communication cannot cover areas such as oceans, mountains, deserts, etc. that cannot be equipped with communication equipment or are not covered by communication due to sparse population. For satellite communication, due to a Satellites can cover a large area of the ground, and 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; finally, 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. The NTN technology mainly studied at this stage is the communication technology based on LEO satellite and GEO satellite.

LEO satellite: The height range of low-orbit satellites is 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.

GEO satellite: a geosynchronous orbit satellite with an orbital height of 35786km and a 24-hour rotation period 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.

Satellite beam: A satellite beam is the smallest unit that a satellite covers the earth's surface, corresponding to different directions. Usually, a satellite covers the earth's surface through hundreds or thousands of satellite beams. These satellite beams can be deployed as different cells or within the same cell. Considering the possible co-channel interference between adjacent satellite beams, a frequency reuse factor greater than 1 is generally considered, that is, adjacent satellite beams are distinguished by different frequency points/carriers/frequency bands.

Currently, in the standardization of R17NTN, two NTN scenarios, transparently transmitted payload NTN and regenerated payload NTN, are mainly studied. An NTN network usually consists of the following network elements:

1. One or more gateways: used to connect satellites and terrestrial public networks.

2. Feeder link: The link used for communication between the gateway and the satellite.

3. Service link (service link): The link used for communication between the terminal and the satellite.

4. Satellite: From the functions provided, it can be divided into satellites based on transparent payload and satellites based on regenerative payload.

Transparent transmission payload: The satellite only provides the functions of wireless frequency filtering, frequency conversion and amplification, that is, it only provides transparent forwarding of signals, and will not change the waveform signal it forwards.

Regenerative payload: In addition to providing the functions of radio frequency filtering, frequency conversion and amplification, the satellite can also provide the functions of demodulation/decoding, routing/conversion, coding/modulation, that is to say, the satellite has some or all functions of the base station.

5. Inter-satellite link: In the scenario of regenerative payload, the link used for communication between satellites.

Please refer to FIG. 2 , which shows a network architecture diagram of an NTN system provided by an embodiment of the present application. As shown in FIG. 2 , the NTN system includes a terminal 201 , a satellite 202 and a gateway device 203 . Wherein, the satellite 202 and the gateway device 203 are connected in a wireless manner (feeder link), the satellites 202 are connected in a wireless manner (inter-satellite link), and the gateway device 203 is connected to a data network. Wherein, the satellite 202 covers the surface of the earth through multiple satellite beams 202a, and each beam covers a certain area. When the terminal 201 is within the coverage of a satellite beam 202a, it can initiate random access to the satellite 202 to establish a service link, and perform subsequent communication.

3) NR SDT

In the R15 and R16 versions of NR, the UE in the RRC inactive state cannot perform data transmission. For a UE in the RRC inactive state, when the UE has uplink data or downlink data arriving, the UE needs to restore the RRC connection with the network before data transmission. In this way, for some services with small data volume and low frequency of data packet arrival, the transmission of each small data packet requires the UE to go through the process of RRC connection establishment and RRC connection release, which will bring unnecessary terminal power consumption and Signaling overhead.

In order to solve the above problems, a small data transmission mechanism in the RRC inactive state is introduced in R17NR, including:

Support small data transmission based on Random Access Channel (RACH) (including two-step random access and four-step random access), UE can use Msg3 or MsgA physical uplink shared channel (Physical Uplink Shared Channel, PUSCH ) to transmit small data;

Supports small data transmission based on pre-configured uplink resources (type1CG (Configured Grant)).

For the SDT process, the UE does not enter the RRC connection state, that is, the transmission of small data packets can be completed.

In the related art, there are the following usages about SDT:

1. For the RACH triggered by SDT, the UE first performs the selection of the random access type;

2. For SDT, UE performs UL carrier selection;

3. If the CG-SDT resource on the UL carrier selected by the UE is a valid resource, the UE chooses to use CG-SDT;

4. Otherwise, if two-step random access resources for SDT are configured on the UL carrier, and the UE meets the SDT criteria for two-step random access, the UE chooses to use SDT based on two-step random access; otherwise, If four-step random access resources for SDT are configured on the UL carrier, and the UE meets the SDT criteria for four-step random access, the UE chooses to use SDT based on four-step random access;

5. If two-step random access resources for SDT and four-step random access resources for SDT are configured on the UL carrier at the same time, the UE performs random access type selection based on the RSRP threshold;

6. The UE selects SDT and non-SDT (non-small data transmission) based on the RSRP threshold;

7. The RSRP threshold for SDT/non-SDT selection is applicable to RACH-based SDT and CG-based SDT;

8. For RACH-based SDT and CG-based SDT, use the same RSRP threshold for SDT/non-SDT selection;

9. For SDT, introduce a separate RSRP threshold for uplink carrier selection;

10. For SDT, introduce a separate RSRP threshold for random access type selection;

11. For RACH-based SDT and CG-based SDT, use the same data volume threshold.

In the NR terrestrial network, the reference signal received power RSRP when the UE is at the center of the cell is significantly higher than that when it is at the edge of the cell. Due to the obvious "near and far effect", the selection of SDT and non-SDT can be based on RSRP measurement, that is, UE can judge whether its channel state is good enough through RSRP measurement, and can use SDT to complete small data transmission.

In the NTN system, the RSRP difference between the UE at the center of the cell and the UE at the edge of the cell is not obvious. If RSRP measurement is used to select SDT and non-SDT, it is difficult to set a suitable The RSRP threshold used for SDT and non-SDT selection, on the other hand, due to the error in RSRP measurement, it is likely to cause the UE to choose an inappropriate procedure to transmit small data. For example, for users in the center of a cell, non-SDT is selected due to the low measured RSRP, which increases the data transmission delay and introduces unnecessary terminal power consumption and network resource overhead; for users at the edge of the cell, due to the measurement SDT is selected because the RSRP is too high, which may cause SDT transmission failure and seriously affect user experience.

For the above problems, the embodiment of the present application provides a new data transmission processing solution, which can be applied to the selection of SDT and non-SDT in the NTN system, so as to improve the accuracy of small data transmission in the NTN system.

Please refer to FIG. 3 , which shows a data transmission processing method provided by an embodiment of the present application. The method may be executed by a terminal, and the above-mentioned terminal may be a terminal in the network architecture shown in FIG. 1 or FIG. 2 . The method may include the steps of:

Step 301, determine the data transmission mode of the terminal according to the position-related information of the terminal; the data transmission mode includes small data transmission or non-small data transmission; the position-related information is used to indicate the positional relationship between the terminal and the serving satellite, and, At least one of the positional relationship between the terminal and the serving cell; the serving cell is an NTN cell; the serving satellite is a satellite corresponding to the serving cell.

In a possible implementation manner, the terminal may determine to select small data transmission or non-small data transmission according to location related information and location conditions.

To sum up, in the solution shown in the embodiment of this application, for the NTN serving cell, the terminal can determine to use SDT or non-SDT according to the positional relationship with respect to the serving cell and/or serving satellite, thereby avoiding the use of The selection of SDT and non-SDT based on the RSRP measurement value will cause the problem of incorrect transmission mode selection, which improves the accuracy of SDT/non-SDT selection in the NTN system, thereby improving the accuracy of data transmission in the NTN system .

In a possible implementation manner, the location condition used when the terminal selects small data transmission or non-small data transmission according to the location related information may be configured by the network side device. Alternatively, the above location conditions may also be pre-set in the terminal, or pre-defined by a standard protocol.

Please refer to FIG. 4 , which shows a method flowchart of a data transmission processing method provided by an embodiment of the present application. The method may be performed by a network side device, where the foregoing network side device may be a base station in the network architecture shown in FIG. 1 or FIG. 2 . The method may include the steps of:

Step 401, send network configuration information to the terminal, the network configuration information includes the condition parameters in the location condition; the location condition is the condition for the terminal to determine the data transmission mode of the terminal according to the location related information; the data transmission mode includes small data transmission or non-small data Transmission; the position-related information is used to indicate at least one of the positional relationship between the terminal and the serving satellite, and the positional relationship between the terminal and the serving cell; the serving cell is an NTN cell; the serving satellite is related to the serving The satellite corresponding to the cell.

To sum up, in the solution shown in the embodiment of this application, in the NTN system, the network side device can send network configuration information to the terminal to configure location conditions for the terminal, and subsequently for the NTN serving cell, the terminal can use the relative The position relationship of the serving cell and/or the serving satellite, combined with the position conditions to determine the use of SDT or non-SDT, thus avoiding the problem of wrong transmission mode selection caused by the selection of SDT and non-SDT based on RSRP measurement values , improving the accuracy of SDT/non-SDT selection in the NTN system, thereby improving the accuracy of data transmission in the NTN system.

Wherein, the terminal may use the location-related information alone to select SDT/non-SDT.

Please refer to FIG. 5 , which shows a flow chart of a data transmission processing method provided by an embodiment of the present application. The method may be executed interactively by a terminal and a network-side device. The terminal may be a terminal in the network architecture shown in FIG. 1 or FIG. 2 , and the network-side device may be a base station in the network architecture shown in FIG. 1 or FIG. 2 . The method may include the steps of:

In step 501, the network side device sends network configuration information to the terminal; correspondingly, the terminal receives the network configuration information, and the network configuration information includes condition parameters in the location condition.

In a possible implementation manner, the network side device may send network configuration information to the terminal through a system information block (System Information Block, SIB). The terminal receives the network configuration information sent by the network side device through the system information block.

Wherein, the foregoing network configuration information may be cell common configuration, and the cell common configuration may be carried by SIBx (x≥1).

Step 502, when the location-related information satisfies the location condition, the terminal determines that the data transmission mode of the terminal is small data transmission.

In the embodiment of the present application, when the location-related information above meets the location condition and other conditions for using SDT (also referred to as other SDT criteria) are also met, the terminal may determine that the data transmission mode is small data transmission. Wherein, the above-mentioned other conditions for using SDT may include various types, for example: the data to be transmitted belongs to a radio bearer (radio bearer) that is allowed to perform SDT, and the amount of data to be transmitted meets the data amount threshold pre-configured by the network, etc. That is to say, the location condition corresponding to the location-related information in the embodiment of the present application can be used as a supplement or enhancement of other SDT criteria.

Step 503, when the location-related information does not satisfy the location condition, determine that the data transmission mode of the terminal is non-small data transmission.

In a possible implementation solution, the location-related information in this embodiment of the present application includes at least one of the following information:

1) a position measurement value, the position measurement value is used to indicate the distance between the terminal and the serving satellite;

2) The reference point distance, the reference point distance includes the distance between the terminal and the ground reference point in the coverage area of the serving cell;

3) Terminal elevation angle, the terminal elevation angle includes the elevation angle from the terminal to the serving satellite.

For different location-related information, corresponding location conditions may also be different.

In a possible implementation manner, the location-related information includes a location measurement value; correspondingly, the location condition includes that the location measurement value is less than or equal to a location measurement threshold. Wherein, the above-mentioned location measurement threshold is a condition parameter in the location condition.

In the embodiment of the present application, the above position measurement value may directly indicate the distance between the terminal and the serving satellite, or the above position measurement value may also indirectly indicate the distance between the terminal and the serving satellite.

In a possible implementation manner, the above position measurement value includes at least one of the following measurement values:

1) The distance between the terminal and the serving satellite;

2) The wireless signal transmission delay between the terminal and the serving satellite; wherein, the above wireless signal transmission delay can indirectly indicate the distance between the terminal and the serving satellite;

3) Round-trip time delay (Round-Trip Time, RTT) between the terminal and the serving satellite; wherein, the above-mentioned RTT can indirectly indicate the distance between the terminal and the serving satellite;

4) The uplink advance (Timing Advance, TA) between the terminal and the serving satellite; wherein, the above TA can indirectly indicate the distance between the terminal and the serving satellite.

In the embodiment of this application, when the terminal is in the idle state or inactive state, and there is a small data transmission requirement, the terminal can measure the distance between the terminal and the serving satellite, wireless signal transmission delay, RTT or TA, and directly Or indirectly indicate the distance between the terminal and the serving satellite. Then, the terminal can compare the above measurement value with the position measurement threshold. When the measurement value is less than the position measurement threshold, it is determined to use the SDT method for transmission; otherwise, the terminal can choose to use non -SDT mode for transmission.

For example, when the position measurement value includes the distance between the terminal and the serving satellite, the position measurement threshold is the distance threshold, and when the distance between the terminal and the serving satellite is less than or equal to the distance threshold, the terminal determines to use the SDT method for transmission; otherwise, When the distance between the terminal and the serving satellite is greater than the distance threshold, the terminal can choose to use the non-SDT method for transmission.

For another example, when the position measurement value includes the wireless signal transmission delay between the terminal and the serving satellite, the position measurement threshold is the transmission delay threshold; when the wireless signal transmission delay between the terminal and the serving satellite is less than or equal to the transmission delay threshold, the terminal determines to use the SDT method for transmission; on the contrary, when the wireless signal transmission delay between the terminal and the serving satellite is greater than the transmission delay threshold, the terminal can choose to use the non-SDT method for transmission.

For another example, when the position measurement value includes the RTT between the terminal and the serving satellite, the position measurement threshold is the RTT threshold; when the RTT between the terminal and the serving satellite is less than or equal to the RTT threshold, the terminal determines to use the SDT method for transmission; otherwise , when the RTT between the terminal and the serving satellite is greater than the RTT threshold, the terminal can choose to use the non-SDT method for transmission.

For example, when the position measurement value includes the TA between the terminal and the serving satellite, the position measurement threshold is the TA threshold; when the TA between the terminal and the serving satellite is less than or equal to the TA threshold, the terminal determines to use the SDT method for transmission; otherwise, When the TA between the terminal and the serving satellite is greater than the TA threshold, the terminal can choose to use the non-SDT method for transmission.

For example, please refer to FIG. 6 , which shows a schematic diagram of transmission mode selection involved in this embodiment of the present application. As shown in Figure 6, within the service range of the serving cell corresponding to the serving satellite 61, the terminal can measure the position measurement value with the serving satellite, and when the position measurement value is less than or equal to the threshold, it is considered that the distance between the terminal and the serving satellite is relatively short Small, at this time, the location of the terminal is close to the center of the ground coverage of the serving cell (that is, it is located in the area 62 in Figure 6). The SDT method can be selected for data transmission; on the contrary, when the position measurement value is greater than the threshold, it is considered that the distance between the terminal and the serving satellite is relatively large. 63), at this time, if the terminal is in the idle state or the inactive state, and there is a need for data transmission, the terminal can select the non-SDT mode for data transmission.

Among them, in the above scheme of this application, the distance between the terminal and the serving satellite, the wireless signal transmission delay, the round-trip delay RTT and the uplink advance TA can also be used in combination. For example, when the position measurement value includes the distance between the terminal and the serving satellite When there are at least two measured values in the distance, wireless signal transmission delay, round-trip delay RTT, and uplink advance TA, if all or part of the at least two measured values meet the location condition, the terminal can choose the SDT method Perform data transmission, otherwise select the non-SDT method for data transmission.

In a possible implementation manner, the location-related information includes a reference point distance; correspondingly, the location condition includes that the reference point distance (that is, the distance between the terminal and the ground reference point) is less than or equal to a reference point distance threshold.

Wherein, for the serving satellite in the NTN, the serving cell corresponding to the serving satellite has a serving cell coverage area on the ground, and the serving cell coverage area may correspond to one or more ground reference points, and the distance between the terminal and the ground reference point is The distance can represent the positional relationship between the terminal and the serving cell.

In a possible implementation manner, the above-mentioned ground reference point of the coverage area of the serving cell is configured by the network side through broadcast or dedicated signaling.

The terminal can receive in advance the network side through broadcast or dedicated signaling (such as RRC signaling, medium access control MAC (Medium Access Control, MAC) layer control element (Control Element, CE) and physical downlink control channel (Physical Downlink Control Channel, PDCCH ) at least one of) the ground reference point configuration information sent, the ground reference point configuration information may include the relevant information of the ground reference point, such as the coordinate position of the ground reference point.

In a possible implementation manner, the ground reference point includes a center point of a coverage area of a serving cell.

In the embodiment of the present application, taking the ground reference point including the center point of the coverage area of the serving cell as an example, please refer to FIG. 7 , which shows a schematic diagram of another transmission mode selection involved in the embodiment of the present application. As shown in Figure 7, within the service range of the serving cell corresponding to the serving satellite 71, the terminal can measure the distance from the reference point to the center point of the coverage area of the serving cell. When the distance from the reference point is less than or equal to the threshold, the terminal is considered to be The location is close to the center of the ground coverage of the serving cell (that is, in the area 72 in Figure 7). At this time, if the terminal is in an idle state or inactive state and has a demand for data transmission, the terminal can choose the SDT method for data transmission. Conversely, when the reference point distance is greater than the threshold, it is considered that the terminal location is far away from the center of the ground coverage of the serving cell (that is, within the area 73 in Figure 7). At this time, if the terminal is in an idle state or an inactive state, And if there is a demand for data transmission, the terminal can choose the non-SDT method for data transmission.

In a possible implementation manner, the position-related information includes the terminal elevation angle; correspondingly, the position condition includes that the terminal elevation angle (that is, the elevation angle from the terminal to the serving satellite) is greater than or equal to an elevation angle threshold.

Wherein, the above-mentioned terminal elevation angle refers to an acute angle between a connection line between the terminal and the serving satellite and the horizontal plane.

Please refer to FIG. 8 , which shows another schematic diagram of transmission mode selection involved in the embodiment of the present application. As shown in Figure 8, within the service range of the serving cell corresponding to the serving satellite 81, the terminal can measure the terminal elevation angle with the serving satellite. When the terminal elevation angle is greater than or equal to the threshold, the terminal is considered to be close to the ground coverage of the serving cell. The center of the range (that is, in the area 82 in Figure 8), at this time, if the terminal is in an idle state or inactive state, and there is a demand for data transmission, the terminal can select the SDT method for data transmission; otherwise, when the terminal is smaller than threshold, it is considered that the terminal location is far away from the center of the ground coverage of the serving cell (that is, within the area 83 in Figure 8). You can choose the non-SDT method for data transmission.

Wherein, the location measurement value, reference point distance, and terminal elevation angle in the above location-related information may also be used in combination. For example, the above-mentioned position-related information includes at least two kinds of position-related information in the position measurement value, the distance of the reference point, and the terminal elevation angle. When all or part of the above-mentioned at least two kinds of position-related information meet the corresponding position conditions, the terminal You can choose the SDT method for data transmission, otherwise choose the non-SDT method for data transmission.

To sum up, in the solution shown in the embodiment of this application, in the NTN system, the network side device can send network configuration information to the terminal to configure the location conditions for the terminal. Subsequently, for the NTN serving cell, the terminal can The location relationship of the cell and/or serving satellite, combined with the location conditions to determine the use of SDT or non-SDT, thus avoiding the problem of wrong transmission mode selection caused by the selection of SDT and non-SDT based on RSRP measurement values, The accuracy of SDT/non-SDT selection in the NTN system is improved, thereby improving the accuracy of data transmission in the NTN system.

In another exemplary solution, the terminal may determine the data transmission mode of the terminal according to the location-related information and the RSRP measurement value of the terminal; that is, the terminal may use the location-related information RSRP measurement value in combination, to select SDT/non-SDT.

Please refer to FIG. 9 , which shows a method flowchart of a data transmission processing method provided by an embodiment of the present application. The method may be executed interactively by a terminal and a network-side device. The terminal may be a terminal in the network architecture shown in FIG. 1 or FIG. 2 , and the network-side device may be a base station in the network architecture shown in FIG. 1 or FIG. 2 . The method may include the steps of:

Step 901, the network side device sends network configuration information to the terminal; correspondingly, the terminal receives the network configuration information, which includes condition parameters in the location condition and RSRP threshold for selecting a data transmission mode.

Wherein, the foregoing network configuration information may be cell common configuration, and the cell common configuration may be carried by SIBx (x≥1, and x is an integer).

Step 902, when the location related information satisfies the location condition and the measured RSRP value of the terminal is greater than or equal to the RSRP threshold, determine that the data transmission mode of the terminal is small data transmission.

In the embodiment of this application, when the above location-related information meets the location condition, the RSRP measurement value of the terminal is greater than or equal to the RSRP threshold, and at the same time, other conditions for using SDT (also called other SDT criteria) are also met, the terminal can determine the data The transmission method is small data transmission. That is to say, the location condition corresponding to the location-related information in the embodiment of the present application can be used as a supplement or enhancement of the RSRP threshold and other SDT criteria.

Step 903, when the location-related information does not satisfy the location condition, or the measured RSRP value of the terminal is smaller than the RSRP threshold, determine that the data transmission mode of the terminal is non-small data transmission.

In an exemplary solution of the embodiment of the present application, when the location-related information and the RSRP measurement value meet the corresponding SDT usage conditions at the same time, if other conditions for using SDT are also met, the terminal can choose to use the SDT method for data transmission; Conversely, when any one of the location-related information and the RSRP measurement value does not meet the corresponding SDT usage condition, the terminal can choose to use the non-SDT method for data transmission.

In another possible implementation, when the location-related information meets the location condition, or the RSRP measurement value of the terminal is greater than or equal to the RSRP threshold, it is determined that the data transmission mode of the terminal is small data transmission; when the location-related information does not meet the location condition, If the measured RSRP value of the terminal is less than the RSRP threshold, it is determined that the data transmission mode of the terminal is non-small data transmission.

That is to say, in another exemplary solution of the embodiment of the present application, when any one of the location-related information and the RSRP measurement value satisfies the corresponding SDT use condition, if other conditions for using SDT are also met, the terminal can Choose to use the SDT method for data transmission; conversely, when neither the location-related information nor the RSRP measurement value meets the corresponding SDT usage conditions, the terminal can choose to use the non-SDT method for data transmission.

1) The distance between the terminal and the serving satellite;

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

3) The round-trip delay (Round-Trip Time, RTT) between the terminal and the serving satellite;

4) The uplink advance (Timing Advance, TA) between the terminal and the serving satellite.

In a possible implementation manner, the ground reference point is configured by the network side through broadcast or dedicated signaling.

To sum up, in the solution shown in the embodiment of this application, in the NTN system, the network side device can send network configuration information to the terminal to configure location conditions and RSRP thresholds for the terminal, and subsequently for the NTN serving cell, the terminal can according to Determine the use of SDT or non-SDT with respect to the position relationship, position condition, RSRP measurement value and RSRP threshold of the serving cell and/or serving satellite, thereby avoiding the use of SDT and non-SDT based on the RSRP measurement value. The problem of incorrect selection of the transmission mode from the previous one improves the accuracy of SDT/non-SDT selection in the NTN system, thereby improving the accuracy of data transmission in the NTN system.

Based on the solution shown in FIG. 5 or FIG. 9 above, in an exemplary embodiment, the UE is 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. SDT and non-SDT are selected based on RSRP measurement results.

The above implementation process is as follows:

1) The UE receives network configuration information and configures SDT related parameters. include:

A. The first measurement threshold used for SDT/non-SDT selection. The first measurement threshold is related to the relative position of the UE and the satellite, and the first measurement may include but not limited to any of the following measurements:

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).

B. RSRP threshold for SDT/non-SDT selection.

Wherein, the configuration information is the public configuration of the cell and is carried in the system information, for example, carried by using SIBx (x≥1).

2) When a UE in a non-connected state has a small data transmission requirement, it determines whether to use SDT or non-SDT based on the following method:

Method 1: UE selects SDT/non-SDT based on the first measurement quantity between itself and the satellite.

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

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 position of the satellite, which is recorded as measured RTT;

If the measured RTT is less than (or equal to) the RTT threshold for SDT/non-SDT selection (while other SDT criteria also need to be met, for example: the data to be transmitted belongs to the radio bearer (radio bearer) that is allowed to perform SDT, the amount of data to be transmitted When the data volume threshold pre-configured by the network is met, etc.), the UE chooses to use SDT;

Otherwise, the UE chooses to use non-SDT.

Wherein, the above-mentioned ephemeris information refers to satellite ephemeris corresponding to satellites in the NTN system. Satellite ephemeris, also known as Two-Line Orbital Element (TLE), is an expression used to describe the position and velocity of a spaceflight object (also known as a two-line orbital data system).

The satellite ephemeris uses the mathematical relationship between the six orbital parameters of Kepler's law to determine the time, coordinates, azimuth, speed and other parameters of the flying object, which has extremely high precision.

Satellite ephemeris can accurately calculate, predict, describe, and track the time, position, and speed of satellites and flying objects; can express precise parameters of flying objects such as celestial bodies, satellites, spacecraft, missiles, and space junk; Placed in three-dimensional space; use time to describe the past, present and future of celestial bodies three-dimensionally.

The time of the satellite ephemeris is calculated according to the universal time (Universal Time Coordinated, UTC); the satellite ephemeris can be updated regularly.

Method 2: The UE selects SDT/non-SDT based on the distance measurement/RTT measurement between itself and the satellite, combined with RSRP measurement.

Method 2-1: If the RSRP measurement quantity and the RTT measurement quantity meet the conditions at the same time, you can choose to use SDT, for example:

If the measured RTT is less than (or equal to) the RTT threshold for SDT/non-SDT selection, and the measured RSRP is greater than (or equal to) the RSRP threshold for SDT/non-SDT selection, and other SDT criteria also need to be met, For example: the data to be transmitted belongs to a radio bearer that is allowed to perform SDT, and the amount of data to be transmitted meets the data volume threshold preconfigured by the network, etc., then the UE chooses to use SDT;

Otherwise, the UE chooses to use non-SDT.

Method 2-2: If one of the RSRP measurement quantity and the RTT measurement quantity satisfies the condition, you can choose to use SDT, for example:

If the measured RTT is less than (or equal to) the RTT threshold for SDT/non-SDT selection, or the measured RSRP is greater than (or equal to) the RSRP threshold for SDT/non-SDT selection, and other SDT criteria also need to be met, For example: the data to be transmitted belongs to a radio bearer that is allowed to perform SDT, and the amount of data to be transmitted meets the data volume threshold preconfigured by the network, then the UE chooses to use SDT;

Otherwise, the UE chooses to use non-SDT.

Based on the solution shown in FIG. 5 or FIG. 9 above, in another exemplary embodiment, the UE is based on the distance between the UE and the cell coverage (center) ground reference point, or based on the distance between the UE and the cell coverage (center) ground reference point The distance between points is combined with the RSRP measurement results to select SDT and non-SDT.

The above implementation process can be as follows:

A. The second distance threshold for SDT/non-SDT selection, while indicating at least one ground reference point location;

B. RSRP threshold for SDT/non-SDT selection.

The configuration information is a public configuration of the cell, and is carried in system information, for example, by using SIBx.

Method 1: The UE selects SDT/non-SDT based on the distance measurement between itself and the cell coverage (center) ground reference point.

For example, the UE obtains its own position based on its positioning capability, and calculates the distance between itself and the ground reference point of the cell according to its own position, which is recorded as measured d;

If measured d is less than (or equal to) the second distance threshold for SDT/non-SDT selection (while other SDT criteria also need to be met, for example: the data to be transmitted belongs to a radio bearer that is allowed to perform SDT, and the amount of data to be transmitted satisfies When the network pre-configured data volume threshold, etc.), the UE chooses to use SDT; otherwise, the UE chooses to use non-SDT.

Method 2: The UE selects SDT/non-SDT based on the distance measurement between itself and the cell coverage (center) ground reference point, combined with RSRP measurement.

Method 2-1: If the RSRP measurement and the distance measurement between the UE and the cell coverage ground reference point meet the conditions at the same time, you can choose to use SDT, for example:

If measured d is less than (or equal to) the second distance threshold for SDT/non-SDT selection, and measured RSRP is greater than (or equal to) the RSRP threshold for SDT/non-SDT selection, and other SDT criteria It also needs to be met, for example: the data to be transmitted belongs to a radio bearer that is allowed to perform SDT, and the amount of data to be transmitted meets the data volume threshold preconfigured by the network, then the UE chooses to use SDT; otherwise, the UE chooses to use non-SDT.

Method 2-2: As long as one of the RSRP measurement quantity and the distance measurement quantity between the UE and the cell coverage ground reference point satisfies the condition, you can choose to use SDT, for example:

If measured d is less than (or equal to) the second distance threshold for SDT/non-SDT selection, or measured RSRP is greater than (or equal to) the RSRP threshold for SDT/non-SDT selection, while other SDT criteria It also needs to be met, for example: the data to be transmitted belongs to a radio bearer that is allowed to perform SDT, and the amount of data to be transmitted meets the data volume threshold preconfigured by the network, then the UE chooses to use SDT; otherwise, the UE chooses to use non-SDT.

Based on the solution shown in FIG. 5 or FIG. 9 above, in yet another exemplary embodiment, the UE selects SDT and non-SDT based on the inclination angle from the UE to the satellite, or based on the inclination angle from the UE to the satellite while combining the RSRP measurement results .

The above implementation process is as follows:

Inclination threshold for SDT/non-SDT selection, while indicating at least one ground reference point location;

RSRP threshold for SDT/non-SDT selection.

Method 1: The UE selects SDT/non-SDT based on the elevation angle measurement from the UE to the serving satellite.

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

If the measured angle is greater than (or equal to) the elevation angle threshold for SDT/non-SDT selection (while other SDT criteria also need to be met, for example: the data to be transmitted belongs to a radio bearer that is allowed to perform SDT, and the amount of data to be transmitted meets the network requirements configured data volume threshold, etc.), the UE chooses to use SDT; otherwise, the UE chooses to use non-SDT.

Method 2: The UE selects SDT/non-SDT based on the elevation angle measurement from itself to the serving satellite, combined with RSRP measurement.

Method 2-1: If the RSRP measurement quantity and the UE and the elevation angle measurement quantity to the serving satellite meet the conditions at the same time, you can choose to use SDT, for example:

If the measured angle is greater than (or equal to) the elevation angle threshold for SDT/non-SDT selection, and the measured RSRP is greater than (or equal to) the RSRP threshold for SDT/non-SDT selection, and other SDT criteria are also required Satisfied, for example: the data to be transmitted belongs to a radio bearer that is allowed to perform SDT, and the amount of data to be transmitted meets the data volume threshold preconfigured by the network, then the UE chooses to use SDT; otherwise, the UE chooses to use non-SDT.

Method 2-2: As long as one of the RSRP measurement and the UE and the elevation angle measurement to the serving satellite meets the conditions, you can choose to use SDT, for example:

If the measured angle is greater than (or equal to) the second distance threshold for SDT/non-SDT selection, or the measured RSRP is greater than (or equal to) the RSRP threshold for SDT/non-SDT selection, and other SDT criteria It also needs to be met, for example: the data to be transmitted belongs to a radio bearer that is allowed to perform SDT, and the amount of data to be transmitted meets the data volume threshold preconfigured by the network, etc., then the UE chooses to use SDT; otherwise, the UE chooses to use non-SDT.

The following are device embodiments of the present application, which can be used to implement the method embodiments of the present application. For details not disclosed in the device embodiments of the present application, please refer to the method embodiments of the present application.

Please refer to FIG. 10 , which shows a block diagram of a data transmission processing apparatus 1000 provided by an embodiment of the present application. The device is used in a terminal, and has the function of realizing the steps executed by the terminal in the above data transmission processing method. As shown in Figure 10, the device may include:

The transmission method determination module 1001 is configured to determine the data transmission method of the terminal according to the location-related information of the terminal; the data transmission method includes small data transmission or non-small data transmission;

In a possible implementation manner, the transmission mode determining module 1001 is configured to:

When the position-related information satisfies the position condition, determine that the data transmission mode of the terminal is small data transmission;

When the location-related information does not meet the location condition, determine that the data transmission mode of the terminal is non-small data transmission.

In a possible implementation manner, the transmission mode determining module 1001 is configured to determine a data transmission mode of the terminal according to the position related information and a reference signal received power (RSRP) measurement value of the terminal.

When the location-related information satisfies the location condition, and the RSRP measurement value of the terminal is greater than or equal to the RSRP threshold, determine that the data transmission mode of the terminal is small data transmission;

When the location-related information does not meet the location condition, or the measured RSRP value of the terminal is smaller than the RSRP threshold, it is determined that the data transmission mode of the terminal is non-small data transmission.

When the location-related information satisfies the location condition, or the RSRP measurement value of the terminal is greater than or equal to the RSRP threshold, determine that the data transmission mode of the terminal is small data transmission;

When the location-related information does not meet the location condition, and the measured RSRP value of the terminal is smaller than the RSRP threshold, it is determined that the data transmission mode of the terminal is non-small data transmission.

In a possible implementation manner, the location-related information includes a location measurement value, and the location measurement value is used to indicate a distance between the terminal and the serving satellite;

The location condition includes that the location measurement is less than or equal to a location measurement threshold.

In a possible implementation manner, the position measurement value includes at least one of the following measurement values:

the distance between the terminal and the serving satellite;

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

The round-trip time delay RTT between the terminal and the serving satellite;

The uplink between the terminal and the serving satellite is advanced by TA.

In a possible implementation manner, the location-related information includes a reference point distance; the reference point distance includes a distance between the terminal and a ground reference point in the coverage area of the serving cell;

The location condition includes that the reference point distance is less than or equal to a reference point distance threshold.

In a possible implementation manner, the ground reference point includes a center point of the coverage area of the serving cell.

In a possible implementation manner, the location-related information includes a terminal elevation angle; the terminal elevation angle includes an elevation angle from the terminal to the serving satellite;

The location condition includes that the elevation angle of the terminal is greater than or equal to an elevation angle threshold.

In a possible implementation manner, the device further includes:

The receiving module is configured to receive network configuration information sent by the network side device, where the network configuration information includes condition parameters of the location condition.

In a possible implementation manner, the network configuration information further includes an RSRP threshold for selecting a data transmission mode.

In a possible implementation manner, the receiving module is configured to receive the network configuration information sent by the network side device through a system information block.

Please refer to FIG. 11 , which shows a block diagram of a data transmission processing apparatus 1100 provided by an embodiment of the present application. The device is used in the network side equipment, and has the function of realizing the steps executed by the network side equipment in the above data transmission processing method. As shown in Figure 11, the device may include:

A sending module 1101, configured to send network configuration information to the terminal, where the network configuration information includes condition parameters in location conditions;

the distance between the terminal and the serving satellite;

The round-trip time delay RTT between the terminal and the serving satellite;

The uplink between the terminal and the serving satellite is advanced by TA.

In a possible implementation manner, the sending module 1101 is configured to send the network configuration information to the terminal through a system information block.

To sum up, in the solution shown in the embodiment of this application, in the NTN system, the network side device can send network configuration information to the terminal to configure location conditions and RSRP thresholds for the terminal, and subsequently for the NTN serving cell, the terminal can Determine the use of SDT or non-SDT according to the position relationship relative to the serving cell and/or serving satellite, position conditions, RSRP measurement value and RSRP threshold, thereby avoiding the need to select SDT and non-SDT based on the RSRP measurement value The problem of wrong transmission mode selection brought about improves the accuracy of SDT/non-SDT selection in the NTN system, thereby improving the accuracy of data transmission in the NTN system.

It should be noted that when the device provided by the above embodiment realizes its functions, it only uses the division of the above-mentioned functional modules as an example for illustration. In practical applications, the above-mentioned function allocation can be completed by different functional modules according to actual needs. That is, the content structure of the device is divided into different functional modules to complete all or part of the functions described above.

Regarding the apparatus in the foregoing embodiments, the specific manner in which each module executes operations has been described in detail in the embodiments related to the method, and will not be described in detail here.

Please refer to FIG. 12 , which shows a schematic structural diagram of a computer device 2000 provided by an embodiment of the present application. The computer device 1200 may include: a processor 1201 , a transceiver 1202 and a memory 1203 .

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

The transceiver 1202 may include a receiver and a transmitter. For example, the receiver and the transmitter may be implemented as the same wireless communication component, and the wireless communication component may include a wireless communication chip and a radio frequency antenna.

The memory 1203 may be connected to the processor 1201 and the transceiver 1202 .

The memory 1203 may be used to store a computer program executed by the processor, and the processor 1201 is used to execute the computer program, so as to implement various steps executed by the terminal in the foregoing method embodiments.

In addition, the memory 1203 can be realized by any type of volatile or non-volatile storage device or their combination, volatile or non-volatile storage device includes but not limited to: magnetic disk or optical disk, electrically erasable and programmable Read Only Memory, Erasable Programmable Read Only Memory, Static Anytime Access Memory, Read Only Memory, Magnetic Memory, Flash Memory, Programmable Read Only Memory.

In an exemplary solution, when the computer device 1200 is implemented as a terminal,

The processor 1201 is configured to determine a data transmission mode of the terminal according to the location-related information of the terminal; the data transmission mode includes small data transmission or non-small data transmission;

Wherein, when the computer device 1200 is implemented as a terminal, the process performed by the processor 1201 may refer to the steps performed by the terminal in the methods shown in FIG. 3 , FIG. 4 , FIG. 5 and FIG. 9 .

Please refer to FIG. 13 , which shows a schematic structural diagram of a computer device 1300 provided by an embodiment of the present application. The computer device 1300 may include: a processor 1301 , a transceiver 1302 and a memory 1303 .

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

Transceiver 1302 may include a receiver and a transmitter. For example, the transceiver 1302 may include a wired communication component, and the wired communication component may include a wired communication chip and a wired interface (such as an optical fiber interface). Optionally, the transceiver 1302 may also include a wireless communication component, and the wireless communication component may include a wireless communication chip and a radio frequency antenna.

The memory 1303 may be connected to the processor 1301 and the transceiver 1302 .

The memory 1303 may be used to store a computer program executed by the processor, and the processor 1301 is used to execute the computer program, so as to implement various steps performed by the network side device in the foregoing method embodiments.

In addition, the memory 1303 can be implemented by any type of volatile or non-volatile storage device or their combination. The volatile or non-volatile storage device includes but not limited to: magnetic disk or optical disk, electrically erasable and programmable Read Only Memory, Erasable Programmable Read Only Memory, Static Anytime Access Memory, Read Only Memory, Magnetic Memory, Flash Memory, Programmable Read Only Memory.

In an exemplary solution, the transceiver 1302 is configured to send network configuration information to the terminal, where the network configuration information includes condition parameters in location conditions;

Wherein, the processes performed by the transceiver 1302 and the processor 1301 in the computer device 1300 can refer to the steps performed by the network side device in the above methods shown in FIG. 3 , FIG. 4 , FIG. 5 and FIG. 9 .

The embodiment of the present application also provides a computer-readable storage medium, where a computer program is stored in the storage medium, and the computer program is loaded and executed by a processor to implement the above-mentioned information in FIG. 3 , FIG. 4 , FIG. 5 and FIG. 9 . In the method shown, each step is performed by the terminal or the network side device.

The present application also provides a computer program product including computer instructions stored in a computer-readable storage medium. The processor of the computer device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions, so that the computer device executes the above-mentioned methods shown in FIG. 3 , FIG. 4 , FIG. 5 and FIG. 9 , and the terminal or Each step performed by the network side device.

The present application also provides a chip, which is used to run in a computer device, so that the computer device executes the methods shown in Fig. 3, Fig. 4, Fig. 5 and Fig. 9 above, and the terminal or network side device steps performed.

The present application also provides a computer program, the computer program is executed by the processor of the computer device, so as to implement the method executed by the terminal or the network side device in the methods shown in Fig. 3, Fig. 4, Fig. 5 and Fig. 9 above. various steps.

Those skilled in the art should be aware that, in the foregoing one or more examples, the functions described in the embodiments of the present application may be implemented by hardware, software, firmware or any combination thereof. When implemented in software, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A storage media may be any available media that can be accessed by a general purpose or special purpose computer.

The above are only exemplary embodiments of the application, and are not intended to limit the application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the application shall be included in the protection of the application. within range.

Claims

A data transmission processing method, characterized in that the method is executed by a terminal, and the method includes:

Determine the data transmission mode of the terminal according to the location-related information of the terminal; the data transmission mode includes small data transmission or non-small data transmission;

Wherein, the position-related information is used to indicate the positional relationship between the terminal and the serving satellite, and at least one of the positional relationship between the terminal and the serving cell; the serving cell is an NTN cell; the The serving satellite is a satellite corresponding to the serving cell.
The method according to claim 1, wherein determining the data transmission mode of the terminal according to the location-related information of the terminal includes:

When the position-related information satisfies the position condition, determine that the data transmission mode of the terminal is small data transmission;

When the location-related information does not satisfy the location condition, determine that the data transmission mode of the terminal is non-small data transmission.
The method according to claim 1, wherein determining the data transmission mode of the terminal according to the relevant information about the terminal location includes:

Determine the data transmission mode of the terminal according to the position-related information and the RSRP measurement value of the terminal.
The method according to claim 3, wherein determining the data transmission mode of the terminal according to the position-related information and the measured value of the reference signal received power (RSRP) of the terminal includes:

When the location-related information satisfies the location condition, and the RSRP measurement value of the terminal is greater than or equal to the RSRP threshold, determine that the data transmission mode of the terminal is small data transmission;

When the location-related information does not meet the location condition, or the measured RSRP value of the terminal is smaller than the RSRP threshold, it is determined that the data transmission mode of the terminal is non-small data transmission.
The method according to claim 3, wherein determining the data transmission mode of the terminal according to the position-related information and the measured value of the reference signal received power (RSRP) of the terminal includes:

When the location-related information satisfies the location condition, or the RSRP measurement value of the terminal is greater than or equal to the RSRP threshold, determine that the data transmission mode of the terminal is small data transmission;

When the location-related information does not meet the location condition, and the measured RSRP value of the terminal is smaller than the RSRP threshold, it is determined that the data transmission mode of the terminal is non-small data transmission.
The method according to any one of claims 1 to 5, characterized in that,

The location-related information includes a location measurement indicating a distance between the terminal and the serving satellite;

The location condition includes that the location measurement is less than or equal to a location measurement threshold.
The method of claim 6, wherein the position measurements include at least one of the following measurements:

the distance between the terminal and the serving satellite;

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

The round-trip time delay RTT between the terminal and the serving satellite;

The uplink between the terminal and the serving satellite is advanced by TA.
The method according to any one of claims 1 to 5, characterized in that,

The location-related information includes a reference point distance; the reference point distance includes a distance between the terminal and a ground reference point in the coverage area of the serving cell;

The location condition includes that the reference point distance is less than or equal to a reference point distance threshold.
The method according to claim 8, characterized in that the ground reference point is configured by the network side through broadcast or dedicated signaling.
The method according to claim 8 or 9, wherein the ground reference point comprises a center point of the coverage area of the serving cell.
The method according to any one of claims 1 to 5, characterized in that,

The location-related information includes a terminal elevation angle; the terminal elevation angle includes an elevation angle from the terminal to the serving satellite;

The location condition includes that the elevation angle of the terminal is greater than or equal to an elevation angle threshold.
The method according to any one of claims 2 to 11, wherein the method further comprises:

Receive network configuration information sent by the network side device, where the network configuration information includes condition parameters of the location condition.
The method according to claim 12, wherein the network configuration information further includes an RSRP threshold for selecting the data transmission mode.
The method according to claim 12 or 13, wherein receiving the network configuration information sent by the network side device comprises:

receiving the network configuration information sent by the network side device through a system information block.
A data transmission processing method, characterized in that the method is executed by a network side device, and the method includes:

Sending network configuration information to the terminal, the network configuration information including condition parameters in the location condition;

Wherein, the location condition is a condition for the terminal to determine the data transmission mode of the terminal according to the location-related information; the data transmission method includes small data transmission or non-small data transmission; the location-related information is used to indicate the The positional relationship between the terminal and the serving satellite, and at least one of the positional relationship between the terminal and the serving cell; the serving cell is an NTN cell; the serving satellite corresponds to the serving cell satellite.
The method according to claim 15, characterized in that,

The location-related information includes a location measurement indicating a distance between the terminal and the serving satellite;

The location condition includes that the location measurement is less than or equal to a location measurement threshold.
The method of claim 16, wherein the position measurements include at least one of the following measurements:

the distance between the terminal and the serving satellite;

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

The round-trip time delay RTT between the terminal and the serving satellite;

The uplink between the terminal and the serving satellite is advanced by TA.
The method according to claim 15, characterized in that,

The location-related information includes a reference point distance; the reference point distance includes a distance between the terminal and a ground reference point in the coverage area of the serving cell;

The location condition includes that the reference point distance is less than or equal to a reference point distance threshold.
The method according to claim 18, wherein the ground reference point is configured by the network side to the terminal through broadcast or dedicated signaling.
The method according to claim 18 or 19, wherein the ground reference point comprises a center point of the coverage area of the serving cell.
The method according to claim 15, characterized in that,

The location-related information includes a terminal elevation angle; the terminal elevation angle includes an elevation angle from the terminal to the serving satellite;

The location condition includes that the elevation angle of the terminal is greater than or equal to an elevation angle threshold.
The method according to any one of claims 15 to 21, characterized in that,

The network configuration information also includes an RSRP threshold for selecting the data transmission mode.
The method according to any one of claims 15 to 22, wherein sending network configuration information to the terminal includes:

Sending the network configuration information to the terminal through a system information block.
A data transmission processing device, characterized in that the device comprises:

A transmission mode determining module, configured to determine a data transmission mode of the terminal according to the location-related information of the terminal; the data transmission mode includes small data transmission or non-small data transmission;

Wherein, the position-related information is used to indicate the positional relationship between the terminal and the serving satellite, and at least one of the positional relationship between the terminal and the serving cell; the serving cell is an NTN cell; the The serving satellite is a satellite corresponding to the serving cell.
The device according to claim 24, wherein the transmission mode determining module is configured to:

When the position-related information satisfies the position condition, determine that the data transmission mode of the terminal is small data transmission;

When the location-related information does not satisfy the location condition, determine that the data transmission mode of the terminal is non-small data transmission.
The device according to claim 24, wherein the transmission mode determination module is configured to determine the data transmission mode of the terminal according to the position-related information and the measured value of the reference signal received power (RSRP) of the terminal .
The device according to claim 26, wherein the transmission mode determining module is configured to:

When the location-related information satisfies the location condition, and the RSRP measurement value of the terminal is greater than or equal to the RSRP threshold, determine that the data transmission mode of the terminal is small data transmission;

When the location-related information does not meet the location condition, or the measured RSRP value of the terminal is smaller than the RSRP threshold, it is determined that the data transmission mode of the terminal is non-small data transmission.
The device according to claim 26, wherein the transmission mode determining module is configured to:

When the location-related information satisfies the location condition, or the RSRP measurement value of the terminal is greater than or equal to the RSRP threshold, determine that the data transmission mode of the terminal is small data transmission;

When the location-related information does not meet the location condition, and the measured RSRP value of the terminal is smaller than the RSRP threshold, it is determined that the data transmission mode of the terminal is non-small data transmission.
Apparatus according to any one of claims 24 to 28, wherein

The location-related information includes a location measurement indicating a distance between the terminal and the serving satellite;

The location condition includes that the location measurement is less than or equal to a location measurement threshold.
The apparatus of claim 29, wherein the position measurement comprises at least one of the following measurements:

the distance between the terminal and the serving satellite;

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

The round-trip time delay RTT between the terminal and the serving satellite;

The uplink between the terminal and the serving satellite is advanced by TA.
Apparatus according to any one of claims 24 to 28, wherein

The location-related information includes a reference point distance; the reference point distance includes a distance between the terminal and a ground reference point in the coverage area of the serving cell;

The location condition includes that the reference point distance is less than or equal to a reference point distance threshold.
The device according to claim 31, wherein the ground reference point is configured by the network side through broadcast or dedicated signaling.
The apparatus according to claim 31 or 32, wherein the ground reference point comprises a center point of the coverage area of the serving cell.
Apparatus according to any one of claims 24 to 28, wherein

The location-related information includes a terminal elevation angle; the terminal elevation angle includes an elevation angle from the terminal to the serving satellite;

The location condition includes that the elevation angle of the terminal is greater than or equal to an elevation angle threshold.
The device according to any one of claims 25 to 34, wherein the device further comprises:

The receiving module is configured to receive network configuration information sent by the network side device, where the network configuration information includes condition parameters of the location condition.
The device according to claim 35, wherein the network configuration information further includes an RSRP threshold for selecting the data transmission mode.
The apparatus according to claim 35 or 36, wherein the receiving module is configured to receive the network configuration information sent by the network side device through a system information block.
A data transmission processing device, characterized in that the device comprises:

A sending module, configured to send network configuration information to the terminal, where the network configuration information includes condition parameters in the location condition;

Wherein, the location condition is a condition for the terminal to determine the data transmission mode of the terminal according to the location-related information; the data transmission method includes small data transmission or non-small data transmission; the location-related information is used to indicate the The positional relationship between the terminal and the serving satellite, and at least one of the positional relationship between the terminal and the serving cell; the serving cell is an NTN cell; the serving satellite corresponds to the serving cell satellite.
Apparatus according to claim 38, characterized in that,

The location-related information includes a location measurement indicating a distance between the terminal and the serving satellite;

The location condition includes that the location measurement is less than or equal to a location measurement threshold.
The apparatus of claim 39, wherein the position measurement comprises at least one of the following measurements:

the distance between the terminal and the serving satellite;

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

The round-trip time delay RTT between the terminal and the serving satellite;

The uplink between the terminal and the serving satellite is advanced by TA.
Apparatus according to claim 38, characterized in that,

The location-related information includes a reference point distance; the reference point distance includes a distance between the terminal and a ground reference point in the coverage area of the serving cell;

The location condition includes that the reference point distance is less than or equal to a reference point distance threshold.
The device according to claim 41, wherein the ground reference point is configured by the network side to the terminal through broadcast or dedicated signaling.
The apparatus according to claim 41 or 42, wherein the ground reference point comprises a center point of the coverage area of the serving cell.
Apparatus according to claim 38, characterized in that,

The location-related information includes a terminal elevation angle; the terminal elevation angle includes an elevation angle from the terminal to the serving satellite;

The location condition includes that the elevation angle of the terminal is greater than or equal to an elevation angle threshold.
Apparatus according to any one of claims 38 to 44 wherein,

The network configuration information also includes an RSRP threshold for selecting the data transmission mode.
The device according to any one of claims 38 to 45, wherein the sending module is configured to send the network configuration information to the terminal through a system information block.
A computer device, characterized in that the computer device includes a processor, a memory, and a transceiver;

The memory stores a computer program, and the computer program is used to be executed by the processor to implement the data transmission processing method according to any one of claims 1 to 23.
A computer-readable storage medium, wherein a computer program is stored in the storage medium, and the computer program is used to be executed by a processor to implement the data transmission processing method according to any one of claims 1 to 23 .
A chip, characterized in that the chip is used to run in a computer device, so that the computer device executes the data transmission processing method according to any one of claims 1 to 23.
A computer program product, characterized in that the computer program product includes computer instructions, the computer instructions are stored in a computer-readable storage medium; a processor of a computer device reads the computer-readable instructions, and execute the computer instructions, so that the computer device executes the data transmission processing method according to any one of claims 1 to 23.
A computer program, characterized in that the computer program is executed by a processor of a computer device to implement the data transmission processing method according to any one of claims 1 to 23.