CN117643108A

CN117643108A - Data transmission processing method, device, equipment and storage medium

Info

Publication number: CN117643108A
Application number: CN202180100669.6A
Authority: CN
Inventors: 胡奕; 李海涛; 于新磊
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2021-10-20
Filing date: 2021-10-20
Publication date: 2024-03-01
Also published as: WO2023065171A1

Abstract

A data transmission processing method, device, equipment and storage medium belong to the technical field of wireless communication. The method comprises the following steps: determining a data transmission mode (301) of the terminal according to the position related information of the terminal; the data transmission mode comprises small data transmission or non-small data transmission; the position-related information is used for indicating at least one of the position relationship between the terminal and the service satellite and the position relationship between the terminal and the service cell; the service cell is an NTN cell; the serving satellite is a satellite corresponding to the serving cell. The scheme avoids the problem of transmission mode selection errors caused by the selection of the SDT and the non-SDT based on the RSRP measured value, improves the accuracy of the SDT/non-SDT selection in the NTN system, and further improves the accuracy of data transmission in the NTN system.

Description

Data transmission processing method, device, equipment and storage medium

Technical Field

The present invention relates to the field of wireless communications technologies, and in particular, to a data transmission processing method, a device, a terminal, and a storage medium.

Background

Small data transfer (Small Data Transmission, SDT) is a technique for enabling a terminal to perform data transfer in an rrc_idle state (i.e., IDLE state) or an rrc_inactive state (i.e., INACTIVE state) based on energy saving considerations.

In order to ensure the success rate of data transmission in the small data transmission technology, it is proposed in the related art that when a terminal has a small data transmission requirement in the rrc_idle state or the rrc_inactive state, the terminal determines whether to transmit data in a small data transmission mode through a reference signal received power (Reference Signal Receiving Power, RSRP) measurement value of the terminal.

However, the scheme of determining whether to employ small data transmission by RSRP measurement is not applicable to Non-terrestrial communication network (Non-Terrestrial Network, NTN) systems.

Disclosure of Invention

The embodiment of the application provides a data transmission processing method, a device, equipment and a storage medium. The technical proposal is as follows:

in one aspect, an embodiment of the present application provides a data transmission processing method, where the method is performed by a terminal, and the method includes:

determining a data transmission mode of the terminal according to the position related information of the terminal; the data transmission mode comprises small data transmission or non-small data transmission;

The position related information is used for indicating at least one of the position relation between the terminal and the service satellite and the position relation between the terminal and the service cell; the service cell is an NTN cell; the serving satellite is a satellite corresponding to the serving cell.

In one aspect, an embodiment of the present application provides a data transmission processing method, which is executed by a network side device, including:

sending network configuration information to a terminal, wherein the network configuration information comprises condition parameters in position conditions;

the position condition is that the terminal determines a data transmission mode of the terminal according to the position related information; the data transmission mode comprises small data transmission or non-small data transmission; the position-related information is used for indicating at least one of the position relationship between the terminal and the service satellite and the position relationship between the terminal and the service cell; the service cell is an NTN cell; the serving satellite is a satellite corresponding to the serving cell.

In another aspect, an embodiment of the present application provides a data transmission processing apparatus, including:

The transmission mode determining module is used for determining the data transmission mode of the terminal according to the position related information of the terminal; the data transmission mode comprises small data transmission or non-small data transmission;

the sending module is used for sending network configuration information to the terminal, wherein the network configuration information comprises condition parameters in the position condition;

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

In yet another aspect, embodiments of the present application further provide a computer readable storage medium having a computer program stored therein, the computer program being loaded and executed by a processor to implement the above-mentioned 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 instructions from the computer-readable storage medium, and the processor executes the computer instructions so that the computer device performs the above-described data transmission processing method.

The technical scheme provided by the embodiment of the application can bring the following beneficial effects:

for the NTN service cell, the terminal can determine to use the SDT or the non-SDT according to the position relation relative to the service cell and/or the service satellite, so that the problem of transmission mode selection errors caused by the selection of the SDT and the non-SDT based on the RSRP measured value is avoided, the accuracy of the SDT/non-SDT selection in the NTN system is improved, and the accuracy of data transmission in the NTN system is further improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic diagram of a network architecture of a communication system provided in one embodiment of the present application;

fig. 2 is a network architecture diagram of an NTN system provided in one embodiment of the present application;

fig. 3 is a flowchart of a data transmission processing method according to an embodiment of the present application;

fig. 4 is a flowchart of a data transmission processing method according to an embodiment of the present application;

fig. 5 is a flowchart of a data transmission processing method according to an embodiment of the present application;

FIG. 6 is a schematic diagram of a transmission scheme selection according to the embodiment shown in FIG. 5;

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

FIG. 8 is a schematic diagram of a transmission scheme selection in accordance with the embodiment of FIG. 5;

fig. 9 is a method flowchart of a data transmission processing method according to an embodiment of the present application;

Fig. 10 is a block diagram of a data transmission processing apparatus provided in one embodiment of the present application;

fig. 11 is a block diagram of a data transmission processing apparatus provided in one embodiment of the present application;

FIG. 12 is a schematic diagram of a computer device according to one embodiment of the present application;

fig. 13 is a schematic structural diagram of a computer device according to an embodiment of the present application.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the present application more apparent, the embodiments of the present application will be described in further detail below with reference to the accompanying drawings.

The network architecture and the service scenario described in the embodiments of the present application are for more clearly describing the technical solution of the embodiments of the present application, and do not constitute a limitation on the technical solution provided in the embodiments of the present application, and those skilled in the art can know that, with the evolution of the network architecture and the appearance of the new service scenario, the technical solution provided in the embodiments of the present application is also applicable to similar technical problems.

Referring to fig. 1, a schematic diagram of a network architecture of a communication system according to an embodiment of the present application is shown. The network architecture may include: a terminal 10 and a base station 20.

The number of terminals 10 is typically plural and one or more terminals 10 may be distributed within the cell managed by each base station 20. The terminal 10 may include various handheld devices, vehicle mount devices, wearable devices, computing devices, or other processing devices connected to a wireless modem, as well as various forms of User Equipment (UE), mobile Station (MS), terminal devices (terminal devices), etc. having wireless communication capabilities. For convenience of description, in the embodiment of the present application, the above-mentioned devices are collectively referred to as a terminal.

Base station 20 is a device deployed in an access network to provide wireless communication functionality for terminal 10. The base stations 20 may include various forms of satellite base stations, macro base stations, micro base stations, relay stations, access points, and the like. The names of base station-capable devices may vary in systems employing different Radio access technologies, for example, in a 5G (5 th Generation, fifth Generation mobile communication technology) New air interface (NR) system, referred to as gnob or gNB. As communication technology evolves, the name "base station" may change. For convenience of description, in the embodiment of the present application, the above-mentioned devices for providing the wireless communication function for the terminal 20 are collectively referred to as a base station.

Optionally, not shown in fig. 1, the network architecture further 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, a session management function (Session Management Function, SMF) or a user plane function (User Plane Function, UPF) device, etc.

The "5G NR system" in the embodiments of the present disclosure may also be referred to as a 5G system or an NR system, but a person skilled in the art may understand the meaning thereof. The technical solution described in the embodiments of the present disclosure may be applied to a 5G NR system, may also be applied to a subsequent evolution system of the 5G NR system, or may also be applied to a system before the 5G NR system, such as a long term evolution (Long Term Evolution, LTE) system.

Before introducing the solutions shown in the embodiments that follow the present application, several concepts related to the present application will be described.

1) 5G NR system

The 5G NR system is a new generation of wireless communication system proposed based on the demands of users for speed, delay, high-speed mobility, energy efficiency of wireless communication, and the diversity and complexity of wireless communication services in future life. The main application scene of the 5G system is as follows: enhanced mobile Ultra-wideband (Enhanced Mobile Broadband, emmbb), low latency high reliability communications (Ultra-reliable and Low Latency Communications, URLLC), large scale machine type communications (Massive Machine Type Communication, mctc).

In a 5G network environment, in order to reduce air interface signaling and to quickly restore radio connection and quickly restore data traffic, a new radio resource control (Radio Resource Control, RRC) state, namely, an RRC INACTIVE state (rrc_inactive) state, is defined, which is different from an RRC IDLE state (rrc_idle) and an RRC connected state (rrc_active). The three RRC states are as follows:

rrc_idle: mobility is cell selection reselection based on the UE, paging is initiated by the CN, paging area is configured by the CN, the base station side does not have UE AS context, and RRC connection does not exist between the UE and the base station.

Rrc_connected: an RRC connection exists between the UE and the base station, and a UE AS context exists between the base station and the UE. The network side knows that the location of the UE is cell specific. Mobility is network-side controlled mobility. Unicast data may be transmitted between the UE and the base station.

Rrc_inactive: mobility is cell selection reselection based on UE, there is a connection between CN-NRs, UE AS context exists on a certain base station, paging is triggered by radio access network (Radio Access Network, RAN), paging area based on RAN is managed by RAN, network side knows UE location is based on paging area level of RAN.

2) Non-terrestrial communication networks (Non Terrestrial Network, NTN)

Related standards organizations are currently researching NTN technology, where NTN generally provides communication services to terrestrial users by way of satellite communications. Satellite communications have many unique advantages over terrestrial cellular communications. First, satellite communications are not limited by the user region, for example, general land communications cannot cover areas where communication devices cannot be installed, such as oceans, mountains, deserts, etc., or communication coverage is not performed due to rarity of population, while for satellite communications, since one satellite can cover a larger ground, and the satellite can orbit around the earth, theoretically every corner on the earth can be covered by satellite communications. And secondly, satellite communication has great social value. Satellite communication can be covered in remote mountain areas, poor and backward countries or regions with lower cost, so that people in the regions enjoy advanced voice communication and mobile internet technology, and the digital gap between developed regions is reduced, and the development of the regions is promoted. Again, the satellite communication distance is far, and the cost of communication is not obviously increased when the communication distance is increased; and finally, the satellite communication has high stability and is not limited by natural disasters.

Communication satellites are classified into Low Earth Orbit (LEO) satellites, medium Earth Orbit (MEO) satellites, geosynchronous Orbit (Geostationary Earth Orbit, GEO) satellites, high elliptical Orbit (High Elliptical Orbit, HEO) satellites, and the like according to the Orbit heights. The NTN technology studied mainly at this stage is a communication technology based on LEO satellites and GEO satellites.

LEO satellite: the low orbit satellite has a height ranging from 500km to 1500km and a corresponding orbit period of about 1.5 hours to 2 hours. The signal propagation delay for single hop communications between users is typically less than 20ms. The maximum satellite visibility time is 20 minutes. The signal propagation distance is short, the link loss is less, and the requirement on the transmitting power of the user terminal is not high.

GEO satellites: geosynchronous orbit satellites have an orbit height of 35786km and a period of 24 hours around the earth. The signal propagation delay for single hop communications between users is typically 250ms.

In order to ensure the coverage of the satellite and improve the system capacity of the whole satellite communication system, the satellite adopts multiple beams to cover the ground, and one satellite can form tens or hundreds of beams to cover the ground; a satellite beam may cover a ground area of several tens to hundreds of kilometers in diameter.

Satellite beam: satellite beams are the smallest units of satellite coverage on the earth's surface, corresponding to different directions. Typically, one satellite performs earth surface coverage by hundreds or thousands of satellite beams. These satellite beams may be deployed as different cells or within the same cell. Considering co-channel interference that may be caused between adjacent satellite beams, a frequency reuse factor greater than 1 is generally considered, i.e., adjacent satellite beams are distinguished using different frequency points/carriers/bands.

Currently, in R17NTN standardization, two NTN scenarios of permeabilized payload NTN and regenerated payload NTN are mainly studied. NTN networks are typically composed of the following network elements:

1. one or more gateways: for connecting satellites to a terrestrial public network.

2. Feeder link (feeder link): a link for communication between the gateway and the satellite.

3. Service link (service link): a link for communication between a terminal and a satellite.

4. And (3) satellite: the functions provided can be divided into a transparent payload-based satellite and a regenerative payload-based satellite.

Transparent payload, the satellite only provides the functions of radio frequency filtering, frequency conversion and amplification, namely only provides transparent forwarding of signals, and does not change the waveform signals forwarded by the satellite.

The regenerated payload satellite may provide demodulation/decoding, routing/conversion, encoding/modulation functions in addition to radio frequency filtering, frequency conversion and amplification functions, that is, the satellite may have some or all of the functions of the base station.

5. Inter-satellite link: in the regenerative payload scenario, a link is used for satellite-to-satellite communication.

Referring to fig. 2, a network architecture diagram of an NTN system according to an embodiment of the present application is shown. As shown in fig. 2, the NTN system includes a terminal 201, a satellite 202, and a gateway device 203. The satellites 202 are connected with the gateway device 203 in a wireless manner (feeder link), the satellites 202 are connected with each other in a wireless manner (inter-satellite link), and the gateway device 203 is connected with a data network. Wherein the satellite 202 covers the earth's surface with a plurality of satellite beams 202a, each beam covering a range of areas. While terminal 201 is within the coverage area of one satellite beam 202a, random access setup service links may be initiated to satellite 202 and subsequent communications may take place.

3)NR SDT

In the NR of R15 and R16 versions, the UE in RRC inactive state cannot perform data transmission. For the UE in RRC inactive state, when uplink data arrives or downlink data arrives at the UE, the UE needs to restore RRC connection with the network first to perform data transmission. Thus, for some services with small data size and low arrival frequency of data packets, each small data packet needs to be transmitted by the UE through the processes of RRC connection establishment and RRC connection release, which causes unnecessary terminal power consumption and signaling overhead.

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

supporting small data transmission (including two-step random access and four-step random access) based on a random access channel (Random Access Channel, RACH), the UE can transmit small data using an uplink physical shared channel (Physical Uplink Shared Channel, PUSCH) of Msg3 or MsgA;

small data transmission based on a preconfigured uplink resource (type 1CG (Configured Grant) is supported.

For the SDT process, the UE does not enter the RRC connection state, and can complete the transmission of the small data packet.

In the related art, the following usage is related to SDT:

1. for SDT triggered RACH, UE first executes random access type selection;

2. for SDT, the UE performs UL carrier selection;

3. if the CG-SDT resource on the UL carrier selected by the UE is an effective resource, the UE selects to use the CG-SDT;

4. otherwise, if two-step random access resources for SDT are configured on the UL carrier and the UE satisfies the SDT criterion of the two-step random access, the UE selects to use the SDT based on the two-step random access; otherwise, if four-step random access resources for SDT are configured on the UL carrier and the UE satisfies the SDT criterion of four-step random access, the UE selects to use SDT based on four-step random access;

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

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

7. the RSRP threshold for SDT/non-SDT selection applies to RACH-based SDT and CG-based SDT;

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

9. for SDT, introducing a single RSRP threshold for uplink carrier selection;

10. for SDT, a separate RSRP threshold for random access type selection is introduced;

11. for RACH based SDT and CG based SDT, the same data volume threshold is used.

In an NR terrestrial network, the reference signal received power RSRP is significantly higher when the UE is at the cell center than when it is at the cell edge. Due to the obvious far-near effect, the selection of the SDT and the non-SDT can be performed based on the RSRP measurement, namely, the UE can judge whether the channel state is good enough or not through the RSRP measurement, and can use the SDT to complete small data transmission.

In NTN systems, for a UE in the center of a cell and a UE at the edge of the cell, the RSRP difference corresponding to the two is not obvious, and if the selection of the SDT and the non-SDT is performed based on the RSRP measurement, it is difficult to set the appropriate RSRP threshold for the SDT and the non-SDT selection on the one hand, and on the other hand, because of the error in the RSRP measurement, it is likely that the UE selects an inappropriate procedure to transmit small data. For example, for a user in the center of a cell, a non-SDT is selected due to a low RSRP, which increases data transmission delay and introduces unnecessary terminal power consumption and network resource overhead; for the users at the cell edge, the measured RSRP is higher, so that the SDT is selected, which may cause SDT transmission failure and seriously affect the user experience.

In view of the above problems, the embodiments of the present application provide a new data transmission processing scheme, which may be suitable for selection of SDT and non-SDT in an NTN system, so as to improve accuracy of small data transmission in the NTN system.

Referring to fig. 3, a data transmission processing method according to an embodiment of the present application is shown. The method may be performed by a terminal, which may be a terminal in the network architecture shown in fig. 1 or fig. 2. The method may comprise the steps of:

step 301, determining a data transmission mode of a terminal according to position related information of the terminal; the data transmission mode comprises small data transmission or non-small data transmission; the position-related information is used for indicating at least one of the position relationship between the terminal and the service satellite and the position relationship between the terminal and the service cell; the service cell is an NTN cell; the serving satellite is a satellite corresponding to the serving cell.

In one possible implementation, the terminal may determine to select small data transmission or non-small data transmission according to the location related information in combination with the location condition.

In summary, in the scheme shown in the embodiment of the present application, for the NTN serving cell, the terminal may determine to use the SDT or the non-SDT according to the positional relationship relative to the serving cell and/or the serving satellite, so as to avoid the problem of wrong transmission mode selection caused by using RSRP measurement to select the SDT and the non-SDT, improve the accuracy of SDT/non-SDT selection in the NTN system, and further improve the accuracy of data transmission in the NTN system.

In a possible implementation manner, the terminal selects the location condition used in the process of small data transmission or non-small data transmission according to the location related information, and the location condition may be configured by the network side device. Alternatively, the location conditions may be preset in the terminal, or predefined by a standard protocol.

Referring to fig. 4, a method flowchart of a data transmission processing method according to an embodiment of the present application is shown. The method may be performed by a network side device, where the network side device may be a base station in the network architecture shown in fig. 1 or fig. 2. The method may comprise the steps of:

step 401, network configuration information is sent to a terminal, wherein the network configuration information comprises condition parameters in position conditions; the position condition is a condition that the terminal determines a data transmission mode of the terminal according to the position related information; the data transmission mode comprises small data transmission or non-small data transmission; the position-related information is used for indicating at least one of the position relationship between the terminal and the service satellite and the position relationship between the terminal and the service cell; the service cell is an NTN cell; the serving satellite is a satellite corresponding to the serving cell.

In summary, in the scheme shown in the embodiment of the present application, in the NTN system, the network side device may send network configuration information to the terminal to configure location conditions to the terminal, and subsequently, for the NTN serving cell, the terminal may determine to use SDT or non-SDT according to the location relationship relative to the serving cell and/or the serving satellite in combination with the location conditions, so as to avoid a problem of a transmission mode selection error caused by using RSRP measurement values to select SDT and non-SDT, and improve accuracy of SDT/non-SDT selection in the NTN system, thereby improving accuracy of data transmission in the NTN system.

Wherein the terminal can select SDT/non-SDT using the location related information alone.

Referring to fig. 5, a method flowchart of a data transmission processing method according to an embodiment of the present application is shown. The method may be interactively performed by a terminal and a network side device, where the terminal may be a terminal in a 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 comprise the steps of:

step 501, a network side device sends network configuration information to a terminal; correspondingly, the terminal receives the network configuration information, wherein the network configuration information comprises condition parameters in the position condition.

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

The network configuration information may be a cell common configuration, and the cell common configuration may be carried by SIBx (x≡1).

In step 502, when the position-related information satisfies the position 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 above-mentioned location related information satisfies the location condition, and other conditions for using SDT (also referred to as other SDT criteria) are also satisfied, the terminal may determine that the data transmission manner is small data transmission. Among other conditions for using SDT as described above, various conditions may be included, such as: the data to be transmitted belongs to a radio bearer (radio bearer) that allows SDT to be performed, and the amount of data to be transmitted satisfies a network preconfigured data amount threshold, and so on. That is, the location condition corresponding to the location related information in the embodiment of the present application may be added or enhanced to other SDT criteria.

In step 503, when the location related information does not meet the location condition, it is determined that the data transmission mode of the terminal is non-small data transmission.

In one possible implementation, the location related information in the embodiments of the present application includes at least one of the following information:

1) A position measurement for indicating a distance between the terminal and the service satellite;

2) Reference point distances, which include the distance between the terminal and the ground reference point of the coverage area of the serving cell;

3) Terminal elevation, which includes the elevation of the terminal to the serving satellite.

The corresponding location conditions may also be different for different location related information.

In one possible implementation, the location-related information includes a location measurement; accordingly, the location condition includes the location measurement value being less than or equal to the location measurement threshold. The position measurement threshold is a condition parameter in the position condition.

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

In one possible implementation, the location measurement includes at least one of the following:

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

2) The wireless signal transmission delay between the terminal and the service satellite; the transmission delay of the wireless signal can indirectly indicate the distance between the terminal and the service satellite;

3) Round-Trip Time (RTT) between the terminal and the serving satellite; wherein, the RTT may indirectly indicate a distance between the terminal and the service satellite;

4) Uplink Advance (TA) between the terminal and the service satellite; wherein the TA may indirectly indicate a distance between the terminal and the service satellite.

In the embodiment of the application, when the terminal is in an idle state or a non-active state and has small data transmission requirements, the terminal can measure and obtain the distance between the terminal and a service satellite, the wireless signal transmission delay, the RTT or the TA so as to directly or indirectly indicate the distance between the terminal and the service satellite, then the terminal can compare the measured value with a position measurement threshold value, and when the measured value is smaller than the position measurement threshold value, the terminal determines to transmit in an SDT mode; otherwise, the terminal can choose to transmit in a non-SDT mode.

For example, when the location measurement includes a distance between the terminal and the service satellite, the location measurement threshold is a distance threshold, and when the distance between the terminal and the service satellite is less than or equal to the distance threshold, the terminal determines to transmit using the SDT mode; conversely, the terminal may choose to transmit using the non-SDT mode when the distance between the terminal and the serving satellite is greater than the distance threshold.

For another example, when the position measurement value includes a delay in wireless signal transmission between the terminal and the service satellite, the position measurement threshold is a transmission delay threshold, and when the wireless signal transmission delay between the terminal and the service satellite is less than or equal to the transmission delay threshold, the terminal determines to transmit by using the SDT mode; in contrast, when the transmission delay of the wireless signal between the terminal and the service satellite is greater than the transmission delay threshold, the terminal can select to use the non-SDT mode for transmission.

For another example, when the location measurement includes an RTT between the terminal and the serving satellite, the location measurement threshold is an RTT threshold; when the RTT between the terminal and the service satellite is smaller than or equal to the RTT threshold, the terminal determines to transmit by using an SDT mode; otherwise, when the RTT between the terminal and the service satellite is greater than the RTT threshold, the terminal may select to use the non-SDT mode for transmission.

For example, when the position measurement includes a TA between the terminal and the serving satellite, the position measurement threshold is a TA threshold; when the TA between the terminal and the service satellite is smaller than or equal to a TA threshold value, the terminal determines to transmit by using an SDT mode; conversely, when the TA between the terminal and the serving satellite is greater than the TA threshold, the terminal may choose to transmit using the non-SDT mode.

For example, please refer to fig. 6, which illustrates a transmission mode selection diagram according to an embodiment of the present application. As shown in fig. 6, in the service area of the service cell corresponding to the service satellite 61, the terminal may measure a position measurement value between the terminal and the service satellite, and when the position measurement value is less than or equal to the threshold value, the distance between the terminal and the service satellite is considered to be smaller, and at this time, the position of the terminal is close to the center of the ground coverage area of the service cell (i.e. is located in the area 62 in fig. 6), and at this time, if the terminal is in an idle state or an inactive state and there is a requirement for data transmission, the terminal may select the SDT mode to perform data transmission; otherwise, when the position measurement value is greater than the threshold value, the distance between the terminal and the serving satellite is considered to be greater, and at this time, the position of the terminal is far away from the center of the ground coverage of the serving cell (i.e., located in the area 63 in fig. 6), and at this time, if the terminal is in an idle state or an inactive state and there is a data transmission requirement, the terminal may select a non-SDT mode to perform data transmission.

In the above scheme, the distance between the terminal and the service satellite, the wireless signal transmission delay, the round trip time RTT and the uplink advance TA may also be used in combination, for example, when the position measurement value includes at least two measurement values of the distance between the terminal and the service satellite, the wireless signal transmission delay, the round trip time RTT and the uplink advance TA, if all or part of the at least two measurement values meet the position condition, the terminal may select the SDT mode to perform data transmission, otherwise select the non-SDT mode to perform data transmission.

In one possible implementation, the location-related information includes a reference point distance; accordingly, the location condition includes the reference point distance (i.e., the distance between the terminal and the ground reference point) being less than or equal to a reference point distance threshold.

For a service satellite in the NTN, a service cell corresponding to the service satellite has a service cell coverage area on the ground, where the service cell coverage area may correspond to one or more ground reference points, and a distance between a terminal and the ground reference point may represent a positional relationship between the terminal and the service cell.

In one possible implementation, the terrestrial reference point of the coverage area of the serving cell is configured by the network side through broadcast or dedicated signaling.

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

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

In the embodiment of the present application, taking an example that the terrestrial reference point includes a center point of a coverage area of a serving cell as an example, please refer to fig. 7, which illustrates another transmission mode selection diagram according to the embodiment of the present application. As shown in fig. 7, in the service range of the service cell corresponding to the service satellite 71, the terminal may measure the reference point distance between the terminal and the center point of the coverage area of the service cell, and when the reference point distance is less than or equal to the threshold value, the terminal is considered to be close to the center of the ground coverage area of the service cell (i.e. located in the area 72 in fig. 7), at this time, if the terminal is in an idle state or an inactive state and there is a data transmission requirement, the terminal may select the SDT mode to perform data transmission; otherwise, when the reference point distance is greater than the threshold value, the terminal is considered to be located away from the center of the ground coverage of the serving cell (i.e. located in the area 73 in fig. 7), and at this time, if the terminal is in an idle state or an inactive state and there is a data transmission requirement, the terminal may select the non-SDT mode to perform data transmission.

In one possible implementation, the location-related information includes a terminal elevation angle; accordingly, the location condition includes the elevation of the terminal (i.e., the elevation of the terminal to the serving satellite) being greater than or equal to an elevation threshold.

The elevation angle of the terminal refers to an acute angle between a connecting line between the terminal and a service satellite and a horizontal plane.

Referring to fig. 8, another transmission mode selection diagram according to an embodiment of the present application is shown. As shown in fig. 8, in the service range of the service cell corresponding to the service satellite 81, the terminal may measure the elevation angle of the terminal between the service satellite and the service satellite, when the elevation angle of the terminal is greater than or equal to the threshold value, the terminal is considered to be close to the center of the ground coverage of the service cell (i.e. located in the area 82 in fig. 8), at this time, if the terminal is in an idle state or an inactive state and there is a requirement for data transmission, the terminal may select the SDT mode to perform data transmission; otherwise, when the terminal is smaller than the threshold, the terminal is considered to be located away from the center of the ground coverage of the serving cell (i.e. located in the area 83 in fig. 8), and at this time, if the terminal is in an idle state or an inactive state and there is a data transmission requirement, the terminal may select the non-SDT mode to perform data transmission.

The position measurement value, the reference point distance and the terminal elevation angle in the above position-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 of position measurement value, reference point distance and elevation angle of the terminal, when all or part of the above-mentioned at least two kinds of position-related information meet the corresponding position condition, the terminal can select SDT mode to make data transmission, otherwise select non-SDT mode to make data transmission.

In summary, in the solution shown in the embodiment of the present application, in the NTN system, the network side device may send network configuration information to the terminal to configure location conditions to the terminal, and subsequently, for the NTN serving cell, the terminal may determine to use SDT or non-SDT according to a location relationship relative to the serving cell and/or the serving satellite in combination with the location conditions, so as to avoid a problem of a transmission mode selection error caused by using RSRP measurement values to select SDT and non-SDT, and improve accuracy of SDT/non-SDT selection in the NTN system, thereby improving accuracy of data transmission in the NTN system.

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

Referring to fig. 9, a method flowchart of a data transmission processing method according to an embodiment of the present application is shown. The method may be interactively performed by a terminal and a network side device, where the terminal may be a terminal in a 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 comprise the steps of:

step 901, network side equipment sends network configuration information to a terminal; correspondingly, the terminal receives the network configuration information, wherein the network configuration information comprises condition parameters in the position condition and an RSRP threshold for selecting a data transmission mode.

The network configuration information may be a cell common configuration, and the cell common configuration may be carried by SIBx (x is greater than or equal to 1, and x is an integer).

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

In this embodiment of the present application, when the above location related information satisfies the location condition, the RSRP measured value of the terminal is greater than or equal to the RSRP threshold, and at the same time, other conditions using SDT (also referred to as other SDT criteria) are also satisfied, the terminal may determine that the data transmission mode is small data transmission. That is, the location condition corresponding to the location related information in the embodiment of the present application may be used as an RSRP threshold, and supplement or enhance to other SDT criteria.

In step 903, when the location related information does not meet the location condition, or the RSRP measured 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 an exemplary scheme of the embodiment of the present application, when the location related information and the RSRP measured value simultaneously meet the corresponding SDT usage conditions, if other conditions for using the SDT are also met, the terminal may select to use the SDT mode to perform data transmission; otherwise, when any one of the position-related information and the RSRP measured value does not meet the corresponding SDT usage condition, the terminal may select to use the non-SDT mode to perform data transmission.

In another possible implementation manner, when the location related information meets a location condition, or the RSRP measured value of the terminal is greater than or equal to the RSRP threshold, determining that the data transmission mode of the terminal is small data transmission; when the position-related information does not meet the position condition, the RSRP measured value of the terminal is smaller than the RSRP threshold, and the data transmission mode of the terminal is determined to be non-small data transmission.

That is, in another exemplary aspect of the embodiments of the present application, when any one of the location related information and the RSRP measured value satisfies the corresponding SDT usage condition, if other conditions for using the SDT are also satisfied, the terminal may select to use the SDT mode for data transmission; otherwise, when the corresponding SDT using condition is not satisfied in the position related information and the RSRP measured value, the terminal can select to use the non-SDT mode for data transmission.

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

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

3) Round-Trip Time (RTT) between the terminal and the serving satellite;

4) Upstream Advance (TA) between the terminal and the service satellite.

In one possible implementation, the location-related information includes a reference point distance; accordingly, the location condition includes the reference point distance (i.e., the distance between the terminal and the ground reference point) being less than or equal to the reference point distance threshold.

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

In summary, in the scheme shown in the embodiment of the present application, in the NTN system, the network side device may send network configuration information to the terminal to configure a location condition and an RSRP threshold to the terminal, and subsequently, for the NTN serving cell, the terminal may determine to use the SDT or the non-SDT according to the location relationship, the location condition, the RSRP measurement value and the RSRP threshold with respect to the serving cell and/or the serving satellite, so as to avoid a problem of a transmission mode selection error caused by selecting the SDT and the non-SDT based on the RSRP measurement value, and improve 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 schemes shown in fig. 5 or 9 above, in one exemplary embodiment, the UE makes the selection of the SDT and non-SDT based on the relative position between the UE and the current cell service satellite, or based on the relative position between the UE and the current cell service satellite, in combination with RSRP measurements.

The implementation process is as follows:

1) The UE receives the network configuration information and configures SDT related parameters. Comprising the following steps:

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

the distance between the UE and the current cell service satellite;

the wireless signal transmission delay between the UE and the current cell service satellite;

RTT between UE and current cell service satellite;

the TA between the UE and the serving satellite of the current cell, i.e. the TA corresponding to the service link (service link).

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

The configuration information is a cell public configuration, and is carried in a system message, for example, SIBx (x is greater than or equal to 1).

2) The UE in the non-connected state determines whether to use SDT or non-SDT when there is a small data transmission requirement based on the following method:

the method 1 is that the UE selects SDT/non-SDT based on a first measurement quantity between the UE and a satellite.

Taking RTT measurement as an example (when the first measurement quantity threshold is the RTT threshold):

the UE acquires the position of the UE based on the positioning capability, acquires the position of a current cell service satellite based on ephemeris information, calculates RTT between the UE and the satellite according to the position of the UE and the satellite position, and marks the RTT 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 need to be met, e.g., the data to be transmitted belongs to a radio bearer (radio bearer) that allows SDT to be performed, the amount of data to be transmitted meets a network preconfigured data amount threshold, etc.), the UE selects to use SDT;

otherwise, the UE chooses to use non-SDT.

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

The satellite ephemeris determines various parameters such as time, coordinates, azimuth, speed and the like of the flying body according to the mathematical relationship among 6 orbit parameters of kepler law, and has extremely high precision.

The satellite ephemeris can accurately calculate, predict, describe, track the running states of satellites, time, position, speed and the like of a flying body; the precise parameters of flying bodies such as celestial bodies, satellites, spacecrafts, missiles, space garbage and the like can be expressed; the flying body can be placed in a three-dimensional space; the past, present and future of celestial bodies are depicted in time-stereo.

The time of satellite ephemeris is calculated according to world standard time, namely coordinated universal time (Universal Time Coordinated, UTC); the satellite ephemeris may be updated periodically.

The method 2 is that the UE performs SDT/non-SDT selection based on distance measurement/RTT measurement between the UE and the satellite and combining with RSRP measurement.

method 2-1: the RSRP measurement quantity and the RTT measurement quantity satisfy the conditions at the same time, and then SDT may be selectively used, 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, other SDT criteria need to be satisfied, such as: the data to be transmitted belongs to a radio bearer allowing the SDT to be executed, and the data quantity to be transmitted meets the data quantity threshold preconfigured by the network, so that the UE selects the SDT to be used;

otherwise, the UE chooses to use non-SDT.

Method 2-2: one of the RSRP measurement amount and the RTT measurement amount satisfies a condition, the SDT may be selectively used, such as:

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, while other SDT criteria need to be met, such as: the data to be transmitted belongs to a radio bearer allowing the SDT to be executed, and the UE selects the SDT to be used if the data quantity to be transmitted meets the data quantity threshold preconfigured by the network;

Otherwise, the UE chooses to use non-SDT.

Based on the scheme shown in fig. 5 or fig. 9 above, in another exemplary embodiment, the UE performs the selection of SDT and non-SDT in combination with RSRP measurement results based on the distance between the UE and the cell coverage (center) terrestrial reference point or based on the distance between the UE and the cell coverage (center) terrestrial reference point.

The implementation process can be as follows:

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

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

The configuration information is a cell common configuration and is carried in a system message, for example, carried by using SIBx.

method 1 the ue makes the SDT/non-SDT selection based on distance measurements between itself and the cell coverage (center) terrestrial reference point.

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

if the measured d is smaller than (or equal to) the second distance threshold for SDT/non-SDT selection (while other SDT criteria need to be met, for example, the data to be transmitted belongs to a radio bearer that allows SDT to be performed, the amount of data to be transmitted meets a network preconfigured data amount threshold, etc.), the UE selects to use SDT; otherwise, the UE chooses to use non-SDT.

The method 2 is that the UE performs SDT/non-SDT selection based on the distance measurement between the UE and the cell coverage (center) ground reference point and combining with RSRP measurement.

Method 2-1: the RSRP measurement and the distance measurement between the UE and the cell coverage ground reference point satisfy the conditions at the same time, and then SDT may be selected for use, 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, other SDT criteria need to be satisfied, such as: the data to be transmitted belongs to a radio bearer allowing the SDT to be executed, and the UE selects the SDT to be used if the data quantity to be transmitted meets the data quantity threshold preconfigured by the network; otherwise, the UE chooses to use non-SDT.

Method 2-2: as long as one of the RSRP measurement and the distance measurement between the UE and the cell coverage ground reference point satisfies the condition, SDT may be selected for use, such as:

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, other SDT criteria need to be satisfied, such as: the data to be transmitted belongs to a radio bearer allowing the SDT to be executed, and the UE selects the SDT to be used if the data quantity to be transmitted meets the data quantity threshold preconfigured by the network; otherwise, the UE chooses to use non-SDT.

Based on the schemes shown in fig. 5 or 9 above, in yet another exemplary embodiment, the UE makes the selection of SDT and non-SDT based on the UE-to-satellite tilt angle, or based on the UE-to-satellite tilt angle, in combination with RSRP measurements.

The implementation process is as follows:

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

RSRP threshold for SDT/non-SDT selection.

method 1 the ue makes the SDT/non-SDT selection based on its elevation measurements to the serving satellite.

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

if the measured angle is greater than (or equal to) the elevation threshold for SDT/non-SDT selection (while other SDT criteria need to be met, for example: the data to be transmitted belongs to a radio bearer that allows the SDT to be performed, the amount of data to be transmitted meets a network preconfigured data amount threshold, etc.); otherwise, the UE chooses to use non-SDT.

The method 2 is that the UE performs SDT/non-SDT selection based on elevation angle measurement from the UE to a service satellite and combining RSRP measurement.

Method 2-1: the RSRP measurement and the UE satisfy the conditions simultaneously with the elevation measurement to the serving satellite, and then SDT may be selected for use, for example:

if measured angle is greater than (or equal to) the elevation threshold for SDT/non-SDT selection and measured RSRP is greater than (or equal to) the RSRP threshold for SDT/non-SDT selection, other SDT criteria need to be satisfied, such as: the data to be transmitted belongs to a radio bearer allowing the SDT to be executed, and the UE selects the SDT to be used if the data quantity to be transmitted meets the data quantity threshold preconfigured by the network; otherwise, the UE chooses to use non-SDT.

Method 2-2: as long as one of the RSRP measurement quantity and the elevation angle measurement quantity of the UE to the service satellite satisfies the condition, SDT may be selected to be used, such as:

if measured angle is greater 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, other SDT criteria need to be satisfied, such as: the data to be transmitted belongs to a radio bearer allowing the SDT to be executed, and the data quantity to be transmitted meets the data quantity threshold preconfigured by the network, so that the UE selects the SDT to be used; otherwise, the UE chooses to use non-SDT.

The following are device embodiments of the present application, which may be used to perform 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.

Referring to fig. 10, a block diagram of a data transmission processing apparatus 1000 according to an embodiment of the present application is shown. The device is used in the terminal and has the function of realizing the steps executed by the terminal in the data transmission processing method. As shown in fig. 10, the apparatus may include:

a transmission mode determining module 1001, configured to determine a data transmission mode of the terminal according to the position related information of the terminal; the data transmission mode comprises small data transmission or non-small data transmission;

In one possible implementation, the transmission mode determining module 1001 is configured to, in use,

when the position related information meets a position condition, determining that the data transmission mode of the terminal is small data transmission;

And when the position related information does not meet the position condition, determining 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 location related information and a reference signal received power RSRP measured value of the terminal.

when the position-related information meets a position condition and the RSRP measured value of the terminal is larger than or equal to an RSRP threshold, determining that the data transmission mode of the terminal is small data transmission;

and when the position related information does not meet the position condition, or the RSRP measured value of the terminal is smaller than the RSRP threshold, determining that the data transmission mode of the terminal is non-small data transmission.

when the position related information meets a position condition or the RSRP measured value of the terminal is larger than or equal to an RSRP threshold, determining that the data transmission mode of the terminal is small data transmission;

and when the position related information does not meet the position condition and the RSRP measured value of the terminal is smaller than the RSRP threshold, determining that the data transmission mode of the terminal is non-small data transmission.

In one possible implementation, the location-related information includes a location measurement value indicating a distance between the terminal and the service satellite;

the location condition includes the location measurement value being less than or equal to a location measurement threshold.

a distance between the terminal and the service satellite;

the wireless signal transmission delay between the terminal and the service satellite;

round trip time RTT between the terminal and the service satellite;

and the uplink TA between the terminal and the service satellite is advanced.

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

the location condition includes the reference point distance being less than or equal to a reference point distance threshold.

In one possible implementation, the terrestrial reference point is configured by the network side through broadcast or dedicated signaling.

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

In one possible implementation, the location-related information includes a terminal elevation angle; the terminal elevation angle includes an elevation angle of the terminal to the service satellite;

the location condition includes the terminal elevation angle being greater than or equal to an elevation angle threshold.

In one possible implementation, the apparatus further includes:

the receiving module is used for receiving network configuration information sent by the network side equipment, wherein the network configuration information comprises condition parameters of the position condition.

In one possible implementation, 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.

Referring to fig. 11, a block diagram of a data transmission processing apparatus 1100 according to an embodiment of the present application is shown. 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 data transmission processing method. As shown in fig. 11, the apparatus may include:

a sending module 1101, configured to send network configuration information to a terminal, where the network configuration information includes a condition parameter in a location condition;

a distance between the terminal and the service satellite;

round trip time RTT between the terminal and the service satellite;

and the uplink TA between the terminal and the service satellite is advanced.

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.

In summary, in the scheme shown in the embodiment of the present application, in the NTN system, the network side device may send network configuration information to the terminal to configure the location condition and the RSRP threshold to the terminal, and subsequently, for the NTN serving cell, the terminal may determine to use the SDT or the non-SDT according to the location relationship, the location condition, the RSRP measurement value and the RSRP threshold with respect to the serving cell and/or the serving satellite, so as to avoid a problem of a transmission mode selection error caused by selecting the SDT and the non-SDT based on the RSRP measurement value, and improve 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 apparatus provided in the foregoing embodiment performs the functions thereof, only the division of the respective functional modules is used as an example, in practical application, the foregoing functional allocation may be performed by different functional modules according to actual needs, that is, the content structure of the device is divided into different functional modules, so as to perform all or part of the functions described above.

The specific manner in which the various modules perform the operations in the apparatus of the above embodiments have been described in detail in connection with the embodiments of the method, and will not be described in detail herein.

Referring to fig. 12, a schematic structural diagram of a computer device 2000 according to an embodiment of the present application is shown. 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, which may be implemented as the same wireless communication component, which may include a wireless communication chip and a radio frequency antenna, for example.

Memory 1203 may be coupled to processor 1201 and transceiver 1202.

The memory 1203 may be used for storing a computer program for execution by the processor, and the processor 1201 is used for executing the computer program to implement the steps performed by the terminal in the above-described method embodiment.

Further, memory 1203 may be implemented by any type of volatile or nonvolatile memory device, including, but not limited to: magnetic or optical disks, electrically erasable programmable read-only memory, static random access memory, read-only memory, magnetic memory, flash memory, programmable read-only memory.

In one exemplary scenario, when computer device 1200 is implemented as a terminal,

a processor 1201, configured to determine a data transmission manner of the terminal according to the location related information of the terminal; the data transmission mode comprises small data transmission or non-small data transmission;

Where the computer device 1200 is implemented as a terminal, the process executed by the processor 1201 may refer to each step executed by the terminal in the methods shown in fig. 3, 4, 5, and 9.

Referring to fig. 13, a schematic structural diagram of a computer device 1300 according to an embodiment of the present application is shown. The computer device 1300 may include: processor 1301, transceiver 1302, and memory 1303.

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

The transceiver 1302 may include a receiver and a transmitter. For example, the transceiver 1302 may include a wired communication component that may include a wired communication chip and a wired interface (e.g., a fiber optic interface). Optionally, the transceiver 1302 may also include a wireless communication component, which may include a wireless communication chip and radio frequency antenna.

A memory 1303 may be coupled 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 configured to execute the computer program to implement the steps executed by the network side device in the above method embodiment.

Further, memory 1303 may be implemented by any type or combination of volatile or nonvolatile storage devices including, but not limited to: magnetic or optical disks, electrically erasable programmable read-only memory, static random access memory, read-only memory, magnetic memory, flash memory, programmable read-only memory.

In an exemplary scenario, the transceiver 1302 is configured to send network configuration information to a terminal, where the network configuration information includes a condition parameter in a location condition;

The processes performed by the transceiver 1302 and the processor 1301 in the computer apparatus 1300 may refer to the steps performed by the network side apparatus in the methods shown in fig. 3, 4, 5, and 9.

The embodiment of the application also provides a computer readable storage medium, in which a computer program is stored, where the computer program is loaded and executed by a processor to implement each step executed by a terminal or a network side device in the methods shown in fig. 3, fig. 4, fig. 5, and fig. 9.

The present application also provides a computer program product comprising 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 performs the steps performed by the terminal or the network-side device in the methods shown in fig. 3, 4, 5, and 9.

The present application also provides a chip for running in a computer device, so that the computer device performs the steps performed by a terminal or a network side device in the methods shown in fig. 3, fig. 4, fig. 5, and fig. 9.

The present application also provides a computer program to be executed by a processor of a computer device to implement the steps executed by a terminal or a network side device in the methods shown in fig. 3, fig. 4, fig. 5 and fig. 9.

Those skilled in the art will appreciate that in one or more of the examples described above, the functions described in the embodiments of the present application may be implemented in hardware, software, firmware, or any combination thereof. When implemented in software, these 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 foregoing description of the exemplary embodiments of the present application is not intended to limit the invention to the particular embodiments disclosed, but on the contrary, the intention is to cover all modifications, equivalents, alternatives, and alternatives falling within the spirit and scope of the invention.

Claims

A data transmission processing method, wherein the method is performed by a terminal, the method comprising:

determining a data transmission mode of the terminal according to the position related information of the terminal; the data transmission mode comprises small data transmission or non-small data transmission;

the position related information is used for indicating at least one of the position relation between the terminal and the service satellite and the position relation between the terminal and the service cell; the service cell is an NTN cell; 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 comprises:

when the position related information meets a position condition, determining that the data transmission mode of the terminal is small data transmission;

and when the position related information does not meet the position condition, determining 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 terminal position related information comprises:

and determining the data transmission mode of the terminal according to the position related information and the Reference Signal Received Power (RSRP) measured value of the terminal.
A method according to claim 3, characterized in that determining the data transmission mode of the terminal based on the location related information and the reference signal received power RSRP measurement of the terminal comprises:

when the position-related information meets a position condition and the RSRP measured value of the terminal is larger than or equal to an RSRP threshold, determining that the data transmission mode of the terminal is small data transmission;

and when the position related information does not meet the position condition, or the RSRP measured value of the terminal is smaller than the RSRP threshold, determining that the data transmission mode of the terminal is non-small data transmission.
A method according to claim 3, characterized in that determining the data transmission mode of the terminal based on the location related information and the reference signal received power RSRP measurement of the terminal comprises:

When the position related information meets a position condition or the RSRP measured value of the terminal is larger than or equal to an RSRP threshold, determining that the data transmission mode of the terminal is small data transmission;

and when the position related information does not meet the position condition and the RSRP measured value of the terminal is smaller than the RSRP threshold, determining that the data transmission mode of the terminal is non-small data transmission.
The method according to any one of claims 1 to 5, wherein,

the location-related information includes a location measurement value indicating a distance between the terminal and the service satellite;

the location condition includes the location measurement value being less than or equal to a location measurement threshold.
The method of claim 6, wherein the location measurements comprise at least one of:

a distance between the terminal and the service satellite;

the wireless signal transmission delay between the terminal and the service satellite;

round trip time RTT between the terminal and the service satellite;

and the uplink TA between the terminal and the service satellite is advanced.
The method according to any one of claims 1 to 5, wherein,

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

the location condition includes the reference point distance being less than or equal to a reference point distance threshold.
The method of claim 8, wherein the terrestrial reference point is configured by a 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 serving cell coverage area.
The method according to any one of claims 1 to 5, wherein,

the position-related information includes a terminal elevation angle; the terminal elevation angle includes an elevation angle of the terminal to the service satellite;

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

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

and receiving the network configuration information sent by the network side equipment through a system information block.
A data transmission processing method, wherein the method is performed by a network side device, the method comprising:

sending network configuration information to a terminal, wherein the network configuration information comprises condition parameters in position conditions;

the position condition is that the terminal determines a data transmission mode of the terminal according to the position related information; the data transmission mode comprises small data transmission or non-small data transmission; the position-related information is used for indicating at least one of the position relationship between the terminal and the service satellite and the position relationship between the terminal and the service cell; the service cell is an NTN cell; the serving satellite is a satellite corresponding to the serving cell.
The method of claim 15, wherein the step of determining the position of the probe is performed,

the location-related information includes a location measurement value indicating a distance between the terminal and the service satellite;

The location condition includes the location measurement value being less than or equal to a location measurement threshold.
The method of claim 16, wherein the location measurements comprise at least one of:

a distance between the terminal and the service satellite;

the wireless signal transmission delay between the terminal and the service satellite;

round trip time RTT between the terminal and the service satellite;

and the uplink TA between the terminal and the service satellite is advanced.
The method of claim 15, wherein the step of determining the position of the probe is performed,

the position-related information includes a reference point distance; the reference point distance comprises a distance between the terminal and a ground reference point of the coverage area of the serving cell;

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

the position-related information includes a terminal elevation angle; the terminal elevation angle includes an elevation angle of the terminal to the service satellite;

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

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

and sending the network configuration information to the terminal through a system information block.
A data transmission processing apparatus, the apparatus comprising:

the transmission mode determining module is used for determining the data transmission mode of the terminal according to the position related information of the terminal; the data transmission mode comprises small data transmission or non-small data transmission;

the position related information is used for indicating at least one of the position relation between the terminal and the service satellite and the position relation between the terminal and the service cell; the service cell is an NTN cell; the serving satellite is a satellite corresponding to the serving cell.
The apparatus of claim 24, wherein the means for determining the transmission scheme is configured to,

when the position related information meets a position condition, determining that the data transmission mode of the terminal is small data transmission;

and when the position related information does not meet the position condition, determining that the data transmission mode of the terminal is non-small data transmission.
The apparatus of claim 24, wherein the transmission mode determining module is configured to determine a data transmission mode of the terminal based on the location related information and a reference signal received power RSRP measurement of the terminal.
The apparatus of claim 26, wherein the means for determining the transmission scheme is configured to,

when the position-related information meets a position condition and the RSRP measured value of the terminal is larger than or equal to an RSRP threshold, determining that the data transmission mode of the terminal is small data transmission;

and when the position related information does not meet the position condition, or the RSRP measured value of the terminal is smaller than the RSRP threshold, determining that the data transmission mode of the terminal is non-small data transmission.
The apparatus of claim 26, wherein the means for determining the transmission scheme is configured to,

When the position related information meets a position condition or the RSRP measured value of the terminal is larger than or equal to an RSRP threshold, determining that the data transmission mode of the terminal is small data transmission;

and when the position related information does not meet the position condition and the RSRP measured value of the terminal is smaller than the RSRP threshold, determining that the data transmission mode of the terminal is non-small data transmission.
The apparatus according to any one of claims 24 to 28, wherein,

the location-related information includes a location measurement value indicating a distance between the terminal and the service satellite;

the location condition includes the location measurement value being less than or equal to a location measurement threshold.
The apparatus of claim 29, wherein the location measurements comprise at least one of:

a distance between the terminal and the service satellite;

the wireless signal transmission delay between the terminal and the service satellite;

round trip time RTT between the terminal and the service satellite;

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

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

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

the position-related information includes a terminal elevation angle; the terminal elevation angle includes an elevation angle of the terminal to the service satellite;

the location condition includes the terminal elevation angle being greater than or equal to an elevation angle threshold.
The apparatus according to any one of claims 25 to 34, further comprising:

the receiving module is used for receiving network configuration information sent by the network side equipment, wherein the network configuration information comprises condition parameters of the position condition.
The apparatus of claim 35, wherein the network configuration information further comprises 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 apparatus, the apparatus comprising:

the sending module is used for sending network configuration information to the terminal, wherein the network configuration information comprises condition parameters in position conditions;

the position condition is that the terminal determines a data transmission mode of the terminal according to the position related information; the data transmission mode comprises small data transmission or non-small data transmission; the position-related information is used for indicating at least one of the position relationship between the terminal and the service satellite and the position relationship between the terminal and the service cell; the service cell is an NTN cell; the serving satellite is a satellite corresponding to the serving cell.
The apparatus of claim 38, wherein the device comprises a plurality of sensors,

the location-related information includes a location measurement value indicating a distance between the terminal and the service satellite;

the location condition includes the location measurement value being less than or equal to a location measurement threshold.
The apparatus of claim 39, wherein the position measurements comprise at least one of:

a distance between the terminal and the service satellite;

the wireless signal transmission delay between the terminal and the service satellite;

round trip time RTT between the terminal and the service satellite;

and the uplink TA between the terminal and the service satellite is advanced.
The apparatus of claim 38, wherein the device comprises a plurality of sensors,

the position-related information includes a reference point distance; the reference point distance comprises a distance between the terminal and a ground reference point of the coverage area of the serving cell;

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

the position-related information includes a terminal elevation angle; the terminal elevation angle includes an elevation angle of the terminal to the service satellite;

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

the network configuration information further includes an RSRP threshold for selecting the data transmission mode.
An apparatus according to any one of claims 38 to 45, wherein the sending module is configured to send the network configuration information to the terminal via a system information block.
A computer device comprising a processor, a memory, and a transceiver;

the memory stores a computer program for execution by the processor to implement the data transmission processing method according to any one of claims 1 to 23.
A computer-readable storage medium, in which a computer program is stored for execution by a processor to implement the data transmission processing method according to any one of claims 1 to 23.
A chip for running in a computer device to cause the computer device to perform the data transmission processing method according to any one of claims 1 to 23.
A computer program product, the computer program product comprising computer instructions stored in a computer readable storage medium; a processor of a computer device reads the computer instructions from the computer-readable storage medium and executes the computer instructions so that the computer device performs the data transmission processing method according to any one of claims 1 to 23.
A computer program, characterized in that it 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.