CN115175226A

CN115175226A - GNSS measuring method of terminal equipment, terminal and storage medium

Info

Publication number: CN115175226A
Application number: CN202110358396.7A
Authority: CN
Inventors: 韩波; 李春林; 缪德山; 侯利明; 康绍莉
Original assignee: Datang Mobile Communications Equipment Co Ltd
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2021-04-01
Filing date: 2021-04-01
Publication date: 2022-10-11

Abstract

The application discloses a GNSS measuring method of terminal equipment, a terminal and a storage medium, and belongs to the field of wireless communication. The GNSS measurement method provided by the embodiment of the application comprises the following steps: if the TAU period timer is overtime or the PSM of the energy-saving mode is actively exited in the updating of the tracking area, the GNSS measurement is triggered; or, at a preset time before the TAU period timer expires, triggering GNSS measurement. By the method, the GNSS measurement is triggered at a specific time, the GNSS module is prevented from being in an active state for a long time, the electric quantity is saved, and the problem of overlarge electric quantity consumption when the terminal equipment carries out the GNSS measurement on line for a long time is solved.

Description

GNSS measuring method of terminal equipment, terminal and storage medium

Technical Field

The present application relates to the field of wireless communication technologies, and in particular, to a GNSS measurement method for a terminal device, a terminal, and a storage medium.

Background

A Narrow-Band Internet of Things (Narrow-Internet of Things, NB-IoT) and/or an Internet of Things technology (LTE enhanced MTO, eMTC) Terminal device TE (Terminal Equipment, TE) applied to an existing ground mobile network generally do not have a function of Global Navigation Satellite System (GNSS) measurement, but a Satellite has a fast moving speed and a wide coverage range in a Non-Terrestrial network (Non-Terrestrial Networks, NTN) scenario, which results in a large transmission delay and a large frequency shift in the NTN scenario.

If the NTN IoT terminal equipment has the function of GNSS positioning, the network side sends ephemeris information of relevant satellites through system information, and the NTN IoT terminal equipment has the capability of calculating and obtaining the distance/time delay and Doppler shift between the satellites and the terminal equipment according to the position information and the ephemeris information obtained by GNSS. However, if the GNSS measurement module is always activated, the power consumption of the terminal may be too large.

Disclosure of Invention

The application provides a GNSS measurement method, a terminal and a storage medium of terminal equipment, and aims to solve the problem that electric quantity consumption is too large when the GNSS of the terminal equipment of the Internet of things is measured.

In order to achieve the purpose, the following scheme is adopted in the application:

the embodiment of the invention provides a GNSS measurement method of terminal equipment, which comprises the following steps:

if the TAU period timer is overtime or the PSM of the energy-saving mode is actively exited in the updating of the tracking area, the GNSS measurement is triggered;

or, at a preset time before the TAU period timer expires, triggering GNSS measurement.

Optionally, the method further includes:

if the TAU periodic timer is updated in the tracking area and is overtime or the energy-saving mode PSM is actively exited, starting the GNSS timer after the GNSS measurement is triggered, and if the GNSS timer is overtime, entering an Internet of things communication activity state;

or after the GNSS measurement is triggered within a preset time before the TAU periodic timer expires, if the TAU periodic timer expires, entering an internet of things communication active state.

Optionally, the TAU period timer is related to a reporting period of the monitoring or measurement data of the terminal device.

Optionally, the duration of the GNSS timer is greater than or equal to a GNSS measurement duration.

Optionally, the GNSS measurement duration is estimated according to a GNSS receiver start mode of the terminal device.

Optionally, the preset time is related to a GNSS measurement duration.

Optionally, the preset time is greater than or equal to the GNSS measurement duration.

Optionally, the GNSS measurement method further includes:

and performing multiple times of pre-compensation on the uplink sending data according to the positioning information acquired by the GNSS measurement before the GNSS measurement is triggered next time.

Optionally, the uplink transmission data includes uplink transmission data during at least one of the following periods:

a period of sending random access lead code in uplink for the first time;

a period of repeatedly transmitting the random access preamble;

the period of first sending the physical uplink shared channel;

and repeating the period of transmitting the physical uplink shared channel.

Optionally, the performing multiple pre-compensation on the uplink transmission data further includes:

and performing primary calculation on the timing advance and/or the Doppler frequency offset at the beginning of each continuous uplink data transmission time period, and updating and calculating the timing advance and/or the Doppler frequency offset according to a preset period in the uplink data transmission time period.

Optionally, the preset period is configured by a network side and carried in the system message.

An embodiment of the present invention further provides a terminal device, including: a memory, a transceiver, and a processor, wherein: a memory for storing a computer program; a transceiver for transceiving data under control of the processor; a processor for reading the computer program in the memory and performing the following operations:

Optionally, the processor is further configured to:

if the TAU periodic timer is overtime in the tracking area, starting the GNSS timer after triggering GNSS measurement, and if the GNSS timer is overtime, entering an Internet of things communication activity state;

Optionally, the GNSS measurement duration is estimated according to a GNSS receiver starting mode of the terminal device.

Optionally, the preset time is related to a GNSS measurement duration.

Optionally, the processor 710 is further configured to:

a period of sending random access lead codes in an uplink way for the first time;

a period of repeatedly transmitting the random access preamble;

the period of sending the physical uplink shared channel for the first time;

and repeating the period of transmitting the physical uplink shared channel.

Optionally, the processor 710 is further configured to perform multiple precompensation on the uplink transmission data, and further includes:

An embodiment of the present invention further provides a GNSS measurement apparatus for a terminal device, including:

the control unit is used for triggering GNSS measurement if the TAU period timer is overtime or the energy-saving mode PSM is actively exited if the tracking area is updated;

or, at a preset time before the TAU period timer times out, triggering GNSS measurement.

An embodiment of the present invention further provides a processor-readable storage medium, where the processor-readable storage medium stores a computer program, and the computer program is configured to enable the processor to execute the GNSS measurement method of the terminal device provided in the embodiment of the present invention.

In the embodiment of the application, if the TAU period timer is overtime or the PSM in the energy-saving mode is actively exited after the tracking area is updated, the GNSS measurement is triggered; or, at a preset time before the TAU period timer expires, triggering GNSS measurement. By the method, the GNSS measurement can be triggered at a specific time, so that the GNSS measurement module is prevented from being in an active state for a long time, the electric quantity is saved, and the problem of overlarge electric quantity consumption caused by the fact that the GNSS measurement is carried out on line by the terminal equipment for a long time is solved.

Drawings

Fig. 1 is a flowchart of a GNSS measurement method of a terminal device according to an embodiment of the present disclosure;

fig. 2 is a flowchart of a GNSS measurement method of a terminal device according to an embodiment of the present disclosure;

fig. 3 is a schematic diagram illustrating state switching of a terminal device according to an embodiment of the present application;

fig. 4 is a schematic view of a GNSS measurement performed by a terminal device according to an embodiment of the present application;

fig. 5 is a schematic view of a GNSS measurement performed by a terminal device according to an embodiment of the present disclosure.

Fig. 6 is a schematic diagram of an uplink compensation update period according to an embodiment of the present application;

fig. 7 is a schematic structural diagram of a terminal device according to an embodiment of the present application;

fig. 8 is a schematic structural diagram of a GNSS surveying apparatus of a terminal device according to an embodiment of the present disclosure.

Detailed Description

In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.

The term "and/or" in the embodiments of the present invention describes an association relationship of associated objects, and indicates that three relationships may exist, for example, a and/or B may indicate: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.

The term "plurality" in the embodiments of the present invention means two or more, and other terms are similar thereto.

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The embodiment of the invention provides a GNSS measurement method of terminal equipment, a terminal and a storage medium, and aims to solve the problem that the power consumption is too large when the terminal of the Internet of things measures GNSS.

The method and the device are based on the same application concept, and because the principles of solving the problems of the method and the device are similar, the implementation of the device and the method can be mutually referred, and repeated parts are not repeated.

The network device according to the embodiment of the present application may be a base station, and the base station may include a plurality of cells for providing services to a terminal. A base station may also be called an access point, or may be a device in an access network that communicates over the air-interface, through one or more sectors, with wireless terminal devices, or by other names, depending on the particular application. The network device may be configured to exchange received air frames with Internet Protocol (IP) packets as a router between the wireless terminal device and the rest of the access network, which may include an Internet Protocol (IP) communication network. The network device may also coordinate attribute management for the air interface. For example, the network device according to the embodiment of the present application may be a Base Transceiver Station (BTS) in a Global System for Mobile communications (GSM) or a Code Division Multiple Access (CDMA), may also be a network device (NodeB) in a Wide-band Code Division Multiple Access (WCDMA), may also be an evolved Node B (eNB or e-NodeB) in a Long Term Evolution (LTE) System, a 5G Base Station (gNB) in a 5G network architecture (next generation System), may also be a Home evolved Node B (HeNB), a relay Node (relay Node), a Home Base Station (femto), a pico Base Station (pico) and the like, and the present application is not limited in this embodiment. In some network architectures, a network device may include a Centralized Unit (CU) node and a Distributed Unit (DU) node, which may also be geographically separated.

Multiple Input Multiple Output (MIMO) transmission may be performed between the network device and the terminal by using one or more antennas, where the MIMO transmission may be Single User MIMO (SU-MIMO) or Multi-User MIMO (MU-MIMO). The MIMO transmission may be 2D-MIMO, 3D-MIMO, FD-MIMO, or massive-MIMO, or may be diversity transmission, precoding transmission, beamforming transmission, or the like, depending on the form and number of root antenna combinations.

Referring to fig. 1 and fig. 2, a flowchart illustration of a GNSS measurement method of a terminal device provided in an embodiment of the present application is shown, including:

step 101, if the tracking area update TAU period timer is overtime or the energy saving mode PSM is actively exited, the GNSS measurement is triggered.

Alternatively, the first and second electrodes may be,

step 201, triggering GNSS measurement at a preset time before the TAU period timer times out.

Through the step 101 or the step 201, the GNSS measurement module of the terminal device can be activated within a specific time to trigger GNSS measurement, so that the GNSS measurement module is prevented from being in a long-term operation state, and electric quantity is saved.

Optionally, the method further includes:

The terminal equipment provided by the embodiment of the invention is non-terrestrial network (NTN) IoT terminal equipment in an NTN scene. Wherein, a Tracking Area Update (TAU), and a duration of the TAU period timer is from Idle state Idle to end of the power saving mode PSM, and the embodiment of the present invention takes the TAU period timer-T3412 as an example.

It should be noted that the terminal device in the present application mainly refers to an internet of things terminal device, but does not exclude the terminal device from being applied to a general terminal device UE (User Equipment).

To reduce Power consumption and delay battery life, NB-IoT/eMTC systems use Power Saving Mode (PSM) and extended Discontinuous Reception (eDRX), using an extended cycle timer.

Referring to fig. 3, there are generally three operating states for an nb-IoT/eMTC terminal device: connected state (Connected), idle (Idle) and Power Saving Mode (PSM), the transition mechanism between them is shown in fig. 3:

after the module is registered and enters a network, the terminal equipment in the connection state can send and receive data, the terminal equipment is still in the connection state after sending the data, an 'inactivity timer' is started, 20 seconds are defaulted, and the configurable range is 1-3600 s; when the 'inactivity Timer' is overtime, the terminal equipment enters an idle state, and an activation Timer (Active-Timer-T3324) is started, wherein the overtime configuration range of the T3324 is 2 seconds to 186 minutes; the terminal equipment monitors paging information at intervals in an idle state, when T3324 is overtime, the terminal equipment enters an energy-saving mode state, when a TAU period is ended, the terminal equipment enters a connected state, and the configuration range of a TAU period timer-T3412 is 54 minutes to 310 hours.

During eDRX, the network of the terminal device is intermittently disconnected. When the network is connected, the terminal equipment can receive data, and when the network is disconnected, the terminal equipment cannot receive the data. The time of the stop is from tens of seconds to several hours, and the time of the stop can be configured according to requirements. Entering power saving mode PSM is equivalent to putting the frequency of eDRX switches lower, turning on the network as little as a few days. Similarly, data can be received when the network is opened, and data cannot be received when the network is not opened.

The principle of the power saving mode PSM is to allow the terminal device to turn off the transceiving of the signal and the related functions of the AS (access stratum) after entering the idle state for a period of time, which is equivalent to that the terminal device is turned off after entering the PSM, thereby reducing power consumption of the antenna, the radio frequency, the signaling processing, and the like. The terminal does not accept any network paging during PSM, which is not reachable by the network side at this time. Only when the TAU period timer (T3412) times out, or the terminal device has uplink transmission data to process and actively exits from the PSM, the terminal device will exit from the PSM mode, enter an idle state, and further enter a connected state to process uplink and downlink services.

FIG. 4 shows the GNSS measurement performed in steps 101-102, FIG. 5 shows the GNSS measurement performed in steps 201-202, and in FIG. 4, the GNSS measurement is triggered and started when the TAU cycle timer (T3412) times out; in FIG. 5, GNSS measurements are triggered at a predetermined time before the TAU cycle timer expires and the GNSS timer is started.

Through steps 101-102, when the TAU period timer-T3412 is overtime or the terminal device actively exits the energy saving mode PSM, the terminal device is triggered to open the GNSS module to perform GNSS measurement, and the GNSS timer is started at the same time; when the GNSS timer is over time, the GNSS measurement has ended, and the GNSS module has also been closed, at this time, the terminal device is allowed to enter the internet of things communication activity state.

Through steps 201-202, the terminal device is triggered to open the GNSS module for GNSS measurement and start the GNSS timer at the same time for a preset time before the TAU period timer-T3412 times out; when the TAU period timer-T3412 times out, the GNSS measurement has ended, and the GNSS module has also been turned off, at which time the terminal device is allowed to enter the internet of things communication active state.

The steps 101 to 102 or the steps 201 to 202 can cause the terminal device to perform GNSS measurement and the internet of things communication activity state to be not overlapped, signals of the terminal device and the internet of things communication activity state do not interfere with each other, and the terminal device does not perform GNSS measurement when entering the internet of things communication activity state, so that frequent starting of a GNSS module is avoided, and electric quantity is greatly saved.

Specifically, for the application of the industrial internet of things in the aspect of predictive maintenance, the terminal device needs to report monitoring data periodically. Therefore, the industrial internet of things terminal equipment is mostly in a sleep state and wakes up periodically to report monitoring data. In the embodiment of the present invention, the terminal device is triggered to perform GNSS measurement by using the TAU period timer (T3412), and the duration of the TAU period timer (T3412) is related to the monitoring data reporting period.

Specifically, the duration of the GNSS timer is greater than or equal to the GNSS measurement duration, so that after the GNSS measurement is completed and the GNSS module is turned off, the terminal equipment enters the Internet of things communication activity state again.

Specifically, the GNSS First positioning Time TTFF (Time To First Fix) is an important index for judging the GNSS reception performance, and the First positioning process includes three modes of cold start, warm start and hot start according To different actual conditions when the GNSS receiver is powered on. The cold start mode basically has no available information, and the start process is about 40 s; the warm start mode and the hot start mode are respectively used for determining visible satellites in the current user position and positioning by utilizing a satellite almanac and a satellite ephemeris. At present, navigation products of famous companies of foreign navigation receivers such as Sirf and U-Blox have hot start of 1-2 s and warm start of about 5-9s; at present, the domestic receiver is in hot start time of 9s, and the fast positioning technology is far from foreign countries and is immature. Therefore, the GNSS measurement duration can be estimated according to the GNSS receiver starting mode of the terminal equipment, and the GNSS timer duration can be determined according to the GNSS measurement duration.

Optionally, the preset time is related to a GNSS measurement duration.

Specifically, the preset time before the TAU period timer is overtime is determined according to the GNSS measurement duration, and when it is required to ensure that the terminal device enters the internet of things communication activity state, GNSS measurement is completed, and the GNSS module is in a closed state.

And only when the preset time is more than or equal to the GNSS measurement duration, the GNSS measurement is completed and the GNSS module is closed after the TAU periodic timer is overtime, and the GNSS measurement is not overlapped with the communication activity state of the Internet of things.

Optionally, the GNSS measurement method further includes:

Specifically, since the low earth orbit satellite has a relatively high moving speed of about 7.6km/s with respect to the earth, even if the IoT terminal device for industrial monitoring is in a moving state, its moving speed is negligible for a short time period (at least 2 hours). Therefore, the terminal device performs GNSS measurement to obtain positioning information, and can be used for performing compensation calculation on uplink transmission data during subsequent uplink transmission data. I.e. positioning information obtained from one GNSS measurement, can be reused in repeated transmission of uplink transmitted data.

a period of sending random access lead code in uplink for the first time;

a period of repeatedly transmitting the random access preamble;

the period of first sending the physical uplink shared channel;

and repeating the period of transmitting the physical uplink shared channel.

Optionally, the pre-compensating the uplink transmission data further includes:

updating and calculating the timing advance according to ephemeris information at the current moment and positioning information obtained by GNSS measurement; according to the Timing Advance (TA), pre-compensating the uplink Timing data;

and/or updating and calculating Doppler frequency offset according to ephemeris information at the current moment and positioning information obtained by GNSS measurement; and pre-compensating the uplink frequency data according to the Doppler frequency offset.

Illustratively, referring to fig. 6, it is shown that there is a gap between each successive uplink data transmission period, a calculation is performed at the beginning of each successive uplink data transmission period, and then the calculation is updated in the middle of the successive uplink data transmission period by a preset period, a calculation is performed at the beginning of the next successive uplink data transmission period, and then the calculation is updated in the middle by the preset period, and so on.

Optionally, the preset period is configured by the network side and carried in the system message.

Specifically, the terminal device updates and calculates the timing advance and the doppler frequency offset together with positioning information obtained by the GNSS according to ephemeris information obtained from the SIBx and extrapolated to obtain ephemeris information at a new time, and the calculated preset update period is configured by the network side and carried in a system message SIB.

Optionally, the GNSS timer and GNSS duration may be configured by the network side according to the user service requirement.

Referring to fig. 4, a GNSS surveying method of a terminal device according to the present invention is further described,

in fig. 4, taking NB-IoT terminal device as an example, the TAU period timer (T3412 timer) is timed out to trigger GNSS measurement, and at the same time, the GNSS timer is triggered, after GNSS measurement, when the GNSS timing time is exceeded, the terminal device enters an internet of things communication active state.

At this time, the terminal device starts cell search, searches for a Downlink synchronization signal NPSS (Narrowband primary synchronization signal) and/or NSSS (Narrowband secondary synchronization signal), synchronizes Downlink frequency and symbol with the network, decodes NBCH (Narrowband broadcast Channel) to obtain a primary system information block MIB, decodes NPDSCH (Narrowband Physical Downlink Shared Channel), and obtains other system information carried thereon, for example: acquiring PRACH (Physical Random Access Channel) resource configuration information from SIB2-NB, and acquiring satellite ephemeris information from SIBx; the timing advance and Doppler frequency offset required by Uplink timing and Uplink frequency precompensation of subsequent Uplink transmission data are calculated by utilizing GNSS positioning information obtained by GNSS measurement during awakening and ephemeris information obtained by reading SIBx, wherein the timing advance and Doppler frequency offset comprise a first Uplink transmission random access preamble period, a repeated transmission random access preamble period, a first transmission Physical Uplink Shared Channel Period (PUSCH) and/or a repeated transmission Physical Uplink Shared Channel period.

Thus, one GNSS measurement can be used for multiple precompensations of the required timing advance and doppler frequency offset calculations. After the first monitoring data report is completed, the terminal device enters an eDRX state, and then enters an idle state, the activation timer T3324 is overtime, and the terminal device enters a PSM state. The next time the PSM wakes up, a new GNSS measurement is made.

Referring to fig. 5, a GNSS surveying method of a terminal device according to the present invention is further described,

triggering GNSS measurement by preset time before the TAU period timer (T3412) expires, wherein the length of the preset time is longer than the GNSS measurement duration time so as to ensure that the terminal equipment can enter an Internet of things communication active state after the GNSS measurement is completed, and then entering the Internet of things communication active state by the terminal equipment when the TAU period timer (T3412) expires after the GNSS measurement. The terminal device starts to perform cell search, searches for a Downlink synchronization signal Narrowband primary synchronization signal NPSS/Narrowband primary synchronization signal NSSS, performs Downlink frequency and symbol synchronization with the network, decodes a Narrowband Broadcast Channel (NBCH) to obtain a primary system information block MIB, decodes a Narrowband Physical Downlink Shared Channel (npshared Channel, NPDSCH), and obtains other system information carried thereon, for example: acquiring resource configuration information of a Physical Random Access Channel (PRACH) from a narrowband system message 2 (SIB 2-NB), and acquiring satellite ephemeris information from an SIBx; and calculating timing advance and Doppler frequency offset required by uplink timing and uplink frequency precompensation of subsequent uplink sending data by utilizing GNSS positioning information obtained by GNSS measurement during awakening and ephemeris information obtained by reading SIBx, wherein the timing advance and Doppler frequency offset comprise a period of firstly uplink sending a random access preamble code, a period of repeatedly sending the random access preamble code, a period of firstly sending a physical uplink shared channel and/or a period of repeatedly sending the physical uplink shared channel.

After the reporting of the first monitoring data is completed, the terminal equipment enters an eDRX state and then enters an idle state, an activation timer T3324 is overtime, and the terminal equipment enters a PSM state. The next time the PSM wakes up, new GNSS measurements are made.

It should be noted that, in addition to the time out of the TAU timer or the preset time before the TAU timer times out, the terminal device may wake up from the PSM according to the active report request to perform the GNSS measurement.

In summary, the GNSS measurement method of the terminal device provided by the embodiment of the present invention has the following beneficial effects:

the method has the advantages that when the TAU periodic timer is overtime, GNSS measurement is triggered, meanwhile, the timer GNSS timer is triggered, after the GNSS measurement is completed and the GNSS timer is overtime, the terminal equipment enters an internet of things communication activity state; or triggering GNSS measurement within a preset time before the TAU periodic timer is overtime, and then after the GNSS measurement is completed and the TAU periodic timer is overtime, enabling the terminal equipment to enter an Internet of things communication active state; the method and the device ensure that the Internet of things is not in a communication active state when the terminal equipment is in GNSS measurement, the GNSS measurement of the terminal equipment and the active state of the Internet of things are not repeated and do not interfere with each other, and the electric quantity is saved.

And one GNSS measured value can be used for calculating the timing advance and Doppler frequency offset required by uplink data precompensation for multiple times, and the period of uplink precompensation updating calculation is configured by a network side and is carried in system information.

Referring to fig. 7, an embodiment of the present application provides a terminal device 70, including: memory 720, transceiver 700, and processor 710, wherein:

a memory 720 for storing a computer program;

a transceiver 700 for transceiving data under the control of the processor;

a processor 710 for reading the computer program in the memory and performing the following operations:

Optionally, the processor is further configured to:

Wherein in fig. 7, the bus architecture may include any number of interconnected buses and bridges, with one or more processors, represented by processor 710, and various circuits, represented by memory 720, being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 700 may be a plurality of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over transmission media including wireless channels, wired channels, fiber optic cables, and the like. The user interface 730 may also be an interface capable of interfacing with a desired device for different user devices, including but not limited to a keypad, display, speaker, microphone, joystick, etc.

A transceiver 700 for receiving and transmitting data under the control of a processor 710.

The processor 710 is responsible for managing the bus architecture and general processing, and the memory 720 may store data used by the processor 700 in performing operations.

Alternatively, the processor 710 may be a CPU (central processing unit), an ASIC (Application Specific Integrated Circuit), an FPGA (Field Programmable Gate Array), or a CPLD (Complex Programmable Logic Device), and the processor may also have a multi-core architecture.

The processor is used for executing any method provided by the embodiment of the invention according to the obtained executable instructions by calling the computer program stored in the memory. The processor and memory may also be physically separated.

Optionally, the preset time is related to a GNSS measurement duration.

Optionally, the processor 710 is further configured to:

a period of sending random access lead code in uplink for the first time;

a period of repeatedly transmitting the random access preamble;

the period of sending the physical uplink shared channel for the first time;

and repeating the period of transmitting the physical uplink shared channel.

Optionally, the processor 710 is further configured to pre-compensate at least one uplink transmission data, and further includes:

and performing primary calculation on the timing advance and/or Doppler frequency offset at the beginning of each continuous uplink data transmission time period, and updating and calculating the timing advance and/or Doppler frequency offset according to a preset period in the uplink data transmission time period.

Optionally, the GNSS timer and the GNSS duration may be configured by the network side according to the service requirement of the user.

It should be noted that, the terminal device provided in the embodiment of the present invention can implement all the method steps implemented by the method embodiment and achieve the same technical effect, and detailed descriptions of the same parts and beneficial effects as the method embodiment in this embodiment are omitted here.

Referring to fig. 8, an embodiment of the present application provides a GNSS surveying apparatus 80 of a terminal device, including:

the control unit 81 is configured to trigger GNSS measurement if the tracking area update TAU period timer is overtime or the energy saving mode PSM is actively exited;

Optionally, the control unit 81 is further configured to:

Optionally, the duration of the GNSS timer is greater than or equal to the GNSS measurement duration.

Optionally, the preset time is related to a GNSS measurement duration.

Optionally, the GNSS surveying apparatus 80 further includes a processing unit 82:

the method is used for performing multiple times of precompensation on the uplink sending data according to the positioning information acquired by the GNSS measurement before the GNSS measurement is triggered next time.

a period of sending random access lead code in uplink for the first time;

a period of repeatedly transmitting the random access preamble;

the period of sending the physical uplink shared channel for the first time;

and repeating the period of transmitting the physical uplink shared channel.

Optionally, the processing unit 82 is further configured to pre-compensate at least one uplink transmission data, and further includes:

Optionally, the GNSS timer and the GNSS duration may be configured by the network side according to a service requirement of the user.

It should be noted that, the GNSS measurement apparatus 80 provided in the embodiment of the present invention can implement all the method steps implemented by the above method embodiment, and can achieve the same technical effect, and detailed descriptions of the same parts and beneficial effects as those of the method embodiment in this embodiment are omitted here.

It should be noted that, the division of the cells in the embodiment of the present invention is schematic, and is only one logic function division, and another division manner may be available in actual implementation. In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.

The integrated unit, if implemented as a software functional unit and sold or used as a stand-alone product, may be stored in a processor readable storage medium. Based on such understanding, the technical solution of the present application may be substantially implemented or contributed by the prior art, or all or part of the technical solution may be embodied in a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, a network device, or the like) or a processor (processor) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, an optical disk, or other various media capable of storing program codes.

The processor-readable storage medium can be any available medium or data storage device that can be accessed by a processor, including, but not limited to, magnetic memory (e.g., floppy disks, hard disks, magnetic tape, magneto-optical disks (MOs), etc.), optical memory (e.g., CDs, DVDs, BDs, HVDs, etc.), and semiconductor memory (e.g., ROMs, EPROMs, EEPROMs, non-volatile memory (NAND FLASH), solid State Disks (SSDs)), etc.

As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer-executable instructions. These computer-executable instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These processor-executable instructions may also be stored in a processor-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the processor-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These processor-executable instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

Claims

1. A GNSS measurement method of a terminal device is characterized by comprising the following steps:

2. The GNSS surveying method of a terminal device according to claim 1, characterized in that the method further comprises:

or, after the GNSS measurement is triggered at a preset time before the TAU period timer expires, if the TAU period timer expires, entering an internet of things communication active state.

3. The GNSS measurement method of a terminal device according to claim 1, wherein the TAU period timer is associated with a reporting period of monitoring or measurement data of the terminal device.

4. The GNSS measurement method of the terminal device according to claim 1, wherein the duration of the GNSS timer is equal to or longer than a GNSS measurement duration.

5. The method as claimed in claim 4, wherein the GNSS measurement duration is estimated according to a GNSS receiver start-up mode of the terminal device.

6. The method as recited in claim 1, wherein the predetermined time is related to a GNSS measurement duration.

7. The GNSS measurement method of the terminal device according to claim 6, wherein the predetermined time is greater than or equal to the GNSS measurement duration.

8. The GNSS surveying method of the terminal device according to claim 1, further comprising:

9. The GNSS surveying method of a terminal device according to claim 8, wherein the uplink transmission data includes uplink transmission data during at least one of:

a period of sending random access lead code in uplink for the first time;

a period of repeatedly transmitting the random access preamble;

the period of sending the physical uplink shared channel for the first time;

and repeating the period of transmitting the physical uplink shared channel.

10. The GNSS measurement method of the terminal device according to claim 8, wherein the pre-compensating the uplink transmission data a plurality of times further comprises:

11. The GNSS measurement method of a terminal device according to claim 10,

the preset period is configured by a network side and carried in the system message.

12. A terminal device, comprising: a memory, a transceiver, and a processor, wherein: a memory for storing a computer program; a transceiver for transceiving data under control of the processor; a processor for reading the computer program in the memory and performing the following operations:

if the TAU period timer is overtime when the tracking area is updated, triggering GNSS measurement;

alternatively, the GNSS measurement is triggered at a preset time before the TAU period timer expires or by actively exiting PSM mode.

13. The terminal device of claim 12, wherein the processor is further configured to:

14. The terminal device of claim 12, wherein the TAU period timer is associated with a reporting period of monitoring or measurement data of the terminal device.

15. The terminal device of claim 13, wherein the GNSS timer has a duration equal to or greater than a GNSS measurement duration.

16. The terminal device of claim 15, wherein the GNSS measurement duration is estimated based on a GNSS receiver start-up mode of the terminal device.

17. The terminal device of claim 12, wherein the predetermined time is related to a GNSS measurement duration.

18. The terminal device of claim 17, wherein the predetermined time is greater than or equal to the GNSS measurement duration.

19. The terminal device according to claim 12, wherein the GNSS measurement method further comprises:

20. The terminal device according to claim 19, wherein the uplink transmission data comprises uplink transmission data during at least one of:

repeating the random access preamble period;

the period of sending the physical uplink shared channel for the first time;

and repeating the period of transmitting the physical uplink shared channel.

21. The terminal device of claim 19, wherein the pre-compensating the uplink transmission data for a plurality of times further comprises:

22. The terminal device of claim 21,

23. A GNSS measuring apparatus of a terminal device, comprising:

24. A computer-readable storage medium, characterized in that a computer program is stored thereon, which, when being executed by a processor, carries out the steps of a GNSS measurement method of a terminal device according to any of claims 1 to 11.