CN117595917A - Method, device and equipment for adjusting hybrid automatic repeat request (HARQ) parameters in network transmission of Network Technology (NTN) - Google Patents
Method, device and equipment for adjusting hybrid automatic repeat request (HARQ) parameters in network transmission of Network Technology (NTN) Download PDFInfo
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 90
- 238000005516 engineering process Methods 0.000 title abstract description 13
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/18578—Satellite systems for providing broadband data service to individual earth stations
- H04B7/18586—Arrangements for data transporting, e.g. for an end to end data transport or check
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/18578—Satellite systems for providing broadband data service to individual earth stations
- H04B7/18582—Arrangements for data linking, i.e. for data framing, for error recovery, for multiple access
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The embodiment of the invention discloses a method, a device and equipment for adjusting hybrid automatic retransmission parameters in NTN network transmission, wherein the method comprises the following steps: under the condition that the terminal equipment establishes NTN network transmission connection and performs data transmission, acquiring the position information of the terminal equipment and the ephemeris information of a currently connected satellite; calculating distance information and relative speed information of the terminal equipment and the satellite according to the position information and the ephemeris information; determining the retransmission process number based on the distance information and the relative speed information, and determining a retransmission data mode according to the retransmission process number, wherein the retransmission data mode comprises a full incremental redundancy mode and a partial incremental redundancy mode; and carrying out configuration of the current retransmission process based on the retransmission process number, and carrying out data retransmission in the retransmission data mode through the configured retransmission process. The scheme improves the NTN network transmission efficiency, and performs adaptability adjustment on the HARQ technology, so that the adaptation degree is obviously improved.
Description
Technical Field
The embodiment of the application relates to the technical field of wireless network communication, in particular to a method, a device and equipment for adjusting hybrid automatic repeat request parameters in NTN network transmission.
Background
NTN (Non Terrestrial Network, non-terrestrial network) is a generic term for all networks involving flying objects, including satellite communication networks, high-altitude platform systems, and air-to-ground networks, among others. The satellite communication network relies on a satellite-borne platform, including low-orbit satellites, medium-orbit satellites and geosynchronous orbit satellites; the high-altitude platform system is borne on an airborne platform, comprises an airplane, a balloon and an airship, takes a high-altitude platform station as a mobile communication base station and provides mobile service by using the same frequency band of a ground mobile network. The NTN network may be deployed alone or in addition to the terrestrial network.
In the related art, in order to improve interference and fading resistance and improve throughput and transmission reliability of a system, a new communication technology based on FEC (forward error correction) and ARQ (automatic repeat request), i.e., HARQ (hybrid automatic repeat request), is used in data communication. Due to the specificity of the NTN network, such as relatively high transmission delay, relative movement between the satellite and the terminal during satellite communication, etc., the HARQ technology has reduced applicability, and needs to be improved.
Disclosure of Invention
The embodiment of the invention provides a method, a device and equipment for adjusting hybrid automatic repeat request parameters in NTN network transmission, which solve the problem that the data transmission efficiency is reduced because the adaptation degree of the HARQ technology under the connection of the NTN network is low and most of the HARQ technologies can only be forbidden.
In a first aspect, an embodiment of the present invention provides a method for adjusting a hybrid automatic retransmission parameter in NTN network transmission, including:
under the condition that the terminal equipment establishes NTN network transmission connection and performs data transmission, acquiring the position information of the terminal equipment and the ephemeris information of a currently connected satellite;
calculating distance information and relative speed information of the terminal equipment and the satellite according to the position information and the ephemeris information;
determining the retransmission process number based on the distance information and the relative speed information, and determining a retransmission data mode according to the retransmission process number, wherein the retransmission data mode comprises a full incremental redundancy mode and a partial incremental redundancy mode;
and carrying out configuration of the current retransmission process based on the retransmission process number, and carrying out data retransmission in the retransmission data mode through the configured retransmission process.
Optionally, the determining the retransmission process number based on the distance information and the relative speed information includes:
determining a first retransmission process number according to the distance value recorded in the distance information;
and adjusting the first retransmission process number according to the relative speed information to obtain a second retransmission process number.
Optionally, the determining the first retransmission process number according to the distance value recorded in the distance information includes:
determining a distance interval in which a distance value recorded in the distance information falls, wherein different distance intervals correspond to different process numbers;
and determining the process number corresponding to the distance interval as a first retransmission process number.
Optionally, the adjusting the first retransmission process number according to the relative speed information to obtain a second retransmission process number includes:
determining a position change amount between the terminal equipment and the satellite according to the relative speed information;
and obtaining a corresponding process adjustment value according to the position change quantity, and adding the process adjustment value and the first retransmission process number to obtain a second retransmission process number.
Optionally, the determining the retransmission data mode according to the retransmission process number includes:
when the retransmission process number is larger than a preset value, determining that the retransmission data mode is a full incremental redundancy mode; and when the retransmission process number is not greater than the preset value, determining that the retransmission data mode is a partial incremental redundancy mode.
Optionally, the configuring the current retransmission process based on the retransmission process number includes:
determining the stability of the NTN network transmission connection, and acquiring connection information transmitted by a non-NTN network;
and under the condition that the stability meets the stability condition and the connection information does not meet the connection condition, carrying out the configuration of the current retransmission process based on the retransmission process number.
Optionally, the configuring the current retransmission process based on the retransmission process number includes:
and increasing or decreasing the process number in the current retransmission strategy by a set number of processes every a preset time period until the process number is the retransmission process number.
In a second aspect, an embodiment of the present invention further provides an apparatus for adjusting a hybrid automatic retransmission parameter in NTN network transmission, including:
the information acquisition module is used for acquiring the position information of the terminal equipment and the ephemeris information of the currently connected satellite under the condition that the terminal equipment establishes NTN network transmission connection and performs data transmission;
the data calculation module is used for calculating distance information and relative speed information between the terminal equipment and the satellite according to the position information and the ephemeris information;
the parameter determining module is used for determining the retransmission process number based on the distance information and the relative speed information and determining a retransmission data mode according to the retransmission process number, wherein the retransmission data mode comprises a full incremental redundancy mode and a partial incremental redundancy mode;
and the retransmission execution module is used for carrying out the configuration of the current retransmission process based on the retransmission process number and carrying out data retransmission in the retransmission data mode through the configured retransmission process.
In a third aspect, an embodiment of the present invention further provides an apparatus for adjusting a hybrid automatic repeat request parameter in NTN network transmission, where the apparatus includes:
one or more processors;
storage means for storing one or more programs,
when the one or more programs are executed by the one or more processors, the one or more processors implement the method for adjusting the hybrid automatic repeat request parameters in NTN network transmission according to the embodiment of the present invention.
In a fourth aspect, an embodiment of the present invention further provides a storage medium storing computer executable instructions, where the computer executable instructions when executed by a computer processor are configured to perform the method for adjusting hybrid automatic repeat request parameters in NTN network transmission according to the embodiment of the present invention.
In the embodiment of the invention, under the condition that terminal equipment establishes NTN network transmission connection and performs data transmission, position information of the terminal equipment and ephemeris information of a currently connected satellite are acquired; calculating distance information and relative speed information of the terminal equipment and the satellite according to the position information and the ephemeris information; determining the retransmission process number based on the distance information and the relative speed information, and determining a retransmission data mode according to the retransmission process number, wherein the retransmission data mode comprises a full incremental redundancy mode and a partial incremental redundancy mode; and carrying out configuration of the current retransmission process based on the retransmission process number, and carrying out data retransmission in the retransmission data mode through the configured retransmission process. The scheme improves the NTN network transmission efficiency, and performs adaptability adjustment on the HARQ technology, so that the adaptation degree is obviously improved.
Drawings
Fig. 1 is a flowchart of a method for adjusting a hybrid automatic repeat request parameter in NTN network transmission according to an embodiment of the present invention;
fig. 2 is a flowchart of a method for determining the number of retransmission processes according to an embodiment of the present invention;
fig. 3 is a flowchart of another method for adjusting a hybrid automatic repeat request (harq) parameter in NTN network transmission according to an embodiment of the present invention;
fig. 4 is a flowchart of another method for adjusting a hybrid automatic repeat request (harq) parameter in NTN network transmission according to an embodiment of the present invention;
fig. 5 is a block diagram of a module structure of an adjustment device for a hybrid automatic repeat request parameter in NTN network transmission according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of an apparatus for adjusting a hybrid automatic repeat request parameter in NTN network transmission according to an embodiment of the present invention.
Detailed Description
Embodiments of the present invention will be described in further detail below with reference to the drawings and examples. It should be understood that the particular embodiments described herein are illustrative only and are not limiting of embodiments of the invention. It should be further noted that, for convenience of description, only some, but not all of the structures related to the embodiments of the present invention are shown in the drawings.
Fig. 1 is a flowchart of a method for adjusting a hybrid automatic repeat request parameter in NTN network transmission according to an embodiment of the present invention, where as shown in fig. 1, the method specifically includes:
step S101, under the condition that the terminal equipment establishes NTN network transmission connection and performs data transmission, acquiring the position information of the terminal equipment and the ephemeris information of the currently connected satellite.
The terminal equipment is computing equipment with a network communication function, such as a smart phone, a notebook computer, a tablet personal computer and the like. Alternatively, it may establish a transmission link with the peer device of the NTN network or the non-NTN network.
In one embodiment, when it is detected that the terminal device establishes an NTN network transmission connection and performs data transmission, location information of the terminal device and ephemeris information of a currently connected satellite are acquired. Alternatively, the network connection interface provided by the communication network program/operating system may be invoked to determine whether an NTN network transport connection is currently established, and whether data transfer is in progress. The method for determining whether to perform data transmission may be to determine whether the amount of data transmitted through the NTN network in unit time is greater than a certain data amount threshold, so as to avoid determining that the transmission of the conventional keep-alive packet is data transmission. The size of the data quantity threshold can be set according to actual design requirements.
The location information of the terminal device may be location information determined by GPS positioning, or may be location information determined by other positioning methods, where ephemeris information of a currently connected satellite may be obtained by querying a corresponding ephemeris file stored in advance by the currently connected satellite.
And step S102, calculating to obtain the distance information and the relative speed information of the terminal equipment and the satellite according to the position information and the ephemeris information.
In one embodiment, the calculation of the distance information between the terminal device and the satellite may be obtained by substituting the obtained current position of the terminal device and the satellite position obtained by ephemeris information into a distance calculation formula. Alternatively, the ephemeris information may be obtained by reading a standard format ephemeris file via a set script or program software.
In another embodiment, the terminal device is a device integrated with a GNSS function, and the distance information and the relative speed information between the terminal device and the satellite can be obtained by calling the GNSS function according to the position of the current device and combining with ephemeris information. Optionally, the relative speed between the terminal device and the satellite may be calculated by using a doppler velocity measurement method, and specific algorithms and formulas are not described herein.
Step S103, determining the retransmission process number based on the distance information and the relative speed information, and determining a retransmission data mode according to the retransmission process number, wherein the retransmission data mode comprises a full incremental redundancy mode and a partial incremental redundancy mode.
The number of retransmission processes is the number of HARQ processes running concurrently, wherein each retransmission process can independently transmit a retransmission packet, and parallel transmission of the retransmission packet is realized among a plurality of processes so as to improve throughput.
In one embodiment, the number of retransmission processes is redetermined based on the determined distance information and the relative speed information, and the determination of the retransmission data pattern is performed based on the number of retransmission processes retrieved. Wherein the retransmission data pattern includes a full incremental redundancy pattern and a partial incremental redundancy pattern. The full incremental redundancy mode and the partial incremental redundancy mode are different data transmission modes used in the HARQ technology. The full incremental redundancy mode adds combined decoding based on the HARQ-I mode, and the data packet retransmitted each time is different from the first data packet, does not contain system information bits, and only adds partial redundancy information. Since the system information bits are not contained, the data retransmitted each time cannot be independently decoded, and must be combined with the system information bits contained for the first time to be decoded; in the partial incremental redundancy mode, the retransmission information contains not only redundant information but also system information bits. Each packet is independently decodable due to its inclusion of system information bits.
Optionally, as shown in fig. 2, fig. 2 is a flowchart of a method for determining the number of retransmission processes according to an embodiment of the present invention, including:
step S1031, determining the first retransmission process number according to the distance value recorded in the distance information.
Step S1032, the first retransmission process number is adjusted according to the relative speed information to obtain the second retransmission process number.
In one embodiment, when determining the number of retransmission processes based on the distance information and the relative speed information, the first number of retransmission processes is determined according to the distance value recorded in the distance information, and then the first number of retransmission processes is adjusted according to the relative speed information to obtain the second number of retransmission processes.
Optionally, the determining the first retransmission process number according to the distance value recorded in the distance information may be: determining a distance interval in which a distance value recorded in the distance information falls, wherein different distance intervals correspond to different process numbers; and determining the process number corresponding to the distance interval as a first retransmission process number. The method comprises the steps of presetting a plurality of distance intervals, correspondingly presetting corresponding process numbers for each distance interval, judging the distance interval in which the current distance value falls when determining the first retransmission process number according to the distance information, and determining the process number correspondingly configured for the distance interval as the first retransmission process number. I.e. using a different number of first retransmission processes according to the different distances between the terminal device and the satellite. Optionally, the further the terminal device is from the satellite, the more the corresponding first retransmission process number is, and vice versa, the smaller.
Optionally, the method for adjusting the first retransmission process number according to the relative speed information to obtain the second retransmission process number may be: determining a position change amount between the terminal equipment and the satellite according to the relative speed information; and obtaining a corresponding process adjustment value according to the position change quantity, and adding the process adjustment value and the first retransmission process number to obtain a second retransmission process number. After the positions of the terminal device and the satellite are obtained, the position change amount between the terminal device and the satellite can be determined according to the relative speed information, wherein the relative speed information comprises the moving direction of the satellite and the moving speed of the relative terminal device in the moving direction. The position change amount may be a distance that is closer or a distance that is farther, and the speed at which the distance is closer or the distance is farther may be known from the relative speed. Optionally, the obtaining the corresponding process adjustment value according to the position variation may be: when the position change amount is a position close, a negative progress adjustment value is obtained, and when the position change amount is a position far, a positive progress adjustment value is obtained. The specific negative process adjustment value and the positive process adjustment value can be determined according to the relative speed of the satellite and the terminal device, for example, the value is-5 or +5 when the relative speed is greater than a preset speed value, and the value is-3 or +3 when the relative speed is not greater than the preset speed value, wherein the preset speed value can be set by a developer according to practical situations. And after the process adjustment value is obtained, adding the process adjustment value with the first retransmission process number to obtain a second retransmission process number, and finally determining the configured retransmission process number.
In one embodiment, the configuration of the retransmission data pattern based on the number of retransmission processes is performed after the number of retransmission processes is determined. Alternatively, the configuration mode may be: when the retransmission process number is larger than a preset value, determining that the retransmission data mode is a full incremental redundancy mode; and when the retransmission process number is not greater than the preset value, determining that the retransmission data mode is a partial incremental redundancy mode. Alternatively, the preset value may be 10.
And step S104, carrying out configuration of the current retransmission process based on the retransmission process number, and carrying out data retransmission in the retransmission data mode through the configured retransmission process.
In one embodiment, after determining the number of retransmission processes, the configuration of the current retransmission process is performed based on the number of retransmission processes. Alternatively, the current process number can be directly changed into the determined retransmission process number, so as to perform parallel processing on the retransmission packet. Correspondingly, during processing, data retransmission is carried out according to the determined retransmission data mode.
As can be seen from the above, under the condition that the terminal device establishes NTN network transmission connection and performs data transmission, position information of the terminal device and ephemeris information of a currently connected satellite are obtained; calculating distance information and relative speed information of the terminal equipment and the satellite according to the position information and the ephemeris information; determining the retransmission process number based on the distance information and the relative speed information, and determining a retransmission data mode according to the retransmission process number, wherein the retransmission data mode comprises a full incremental redundancy mode and a partial incremental redundancy mode; and carrying out configuration of the current retransmission process based on the retransmission process number, and carrying out data retransmission in the retransmission data mode through the configured retransmission process. The scheme improves the NTN network transmission efficiency, and performs adaptability adjustment on the HARQ technology, so that the adaptation degree is obviously improved.
Fig. 3 is a flowchart of another method for adjusting a hybrid automatic repeat request parameter in NTN network transmission according to an embodiment of the present invention, where, as shown in fig. 3, the method includes:
step 201, under the condition that the terminal device establishes NTN network transmission connection and performs data transmission, acquiring location information of the terminal device and ephemeris information of a currently connected satellite.
Step S202, calculating distance information and relative speed information between the terminal equipment and the satellite according to the position information and the ephemeris information.
Step S203, determining the number of retransmission processes based on the distance information and the relative speed information, and determining a retransmission data mode according to the number of retransmission processes, where the retransmission data mode includes a full incremental redundancy mode and a partial incremental redundancy mode.
Step S204, determining the stability of the NTN network transmission connection, acquiring connection information transmitted by a non-NTN network, and carrying out configuration of a current retransmission process based on the number of retransmission processes and carrying out data retransmission in the retransmission data mode through the configured retransmission process under the condition that the stability meets a stable condition and the connection information does not meet a connection condition.
In one embodiment, after determining the number of retransmission processes, further determining stability of NTN network transmission connection, and obtaining connection information of non-NTN network transmission, and if stability satisfies a stability condition and the connection information does not satisfy a connection condition, performing configuration of a current retransmission process based on the number of retransmission processes. Optionally, the stability may be a fluctuation value of the signal strength, and the stability condition may be that the fluctuation value of the signal strength is smaller than a preset value within a preset time, and the signal strength value is larger than the preset strength value, where the preset time and the preset strength value may be set according to actual requirements. The connection information may be a network connectivity condition determined based on the keep-alive packet, where the failure to satisfy the connection condition may be detection of network connectivity failure. By setting the configuration conditions of the retransmission process, the scheme is further optimized, and frequent process number change is avoided.
As can be seen from the above, under the condition that the terminal device establishes NTN network transmission connection and performs data transmission, position information of the terminal device and ephemeris information of a currently connected satellite are obtained; calculating distance information and relative speed information of the terminal equipment and the satellite according to the position information and the ephemeris information; determining the retransmission process number based on the distance information and the relative speed information, and determining a retransmission data mode according to the retransmission process number, wherein the retransmission data mode comprises a full incremental redundancy mode and a partial incremental redundancy mode; and carrying out configuration of the current retransmission process based on the retransmission process number, and carrying out data retransmission in the retransmission data mode through the configured retransmission process. The scheme improves the NTN network transmission efficiency, and performs adaptability adjustment on the HARQ technology, so that the adaptation degree is obviously improved.
Fig. 4 is a flowchart of another method for adjusting a hybrid automatic repeat request parameter in NTN network transmission according to an embodiment of the present invention, where, as shown in fig. 4, the method includes:
step S301, under the condition that the terminal device establishes NTN network transmission connection and performs data transmission, acquiring location information of the terminal device and ephemeris information of a currently connected satellite.
Step S302, calculating distance information and relative speed information between the terminal equipment and the satellite according to the position information and the ephemeris information.
Step S303, determining the number of retransmission processes based on the distance information and the relative speed information, and determining a retransmission data mode according to the number of retransmission processes, where the retransmission data mode includes a full incremental redundancy mode and a partial incremental redundancy mode.
Step S304, determining the stability of the NTN network transmission connection, acquiring connection information transmitted by a non-NTN network, increasing or decreasing the process number in the current retransmission strategy by a set number of processes every preset time length until the process number is the retransmission process number under the condition that the stability meets the stability condition and the connection information does not meet the connection condition, and retransmitting data in the retransmission data mode through the configured retransmission process.
In one embodiment, when the configuration of the retransmission process is performed, the number of processes in the current retransmission policy is increased or decreased by a set number of processes every a preset duration until the number of processes is the retransmission process number. Alternatively, the set number may be 1 or 2, i.e. the number of linear processes increases or decreases to the number of retransmission processes, avoiding high frequency fluctuations of the system resources.
As can be seen from the above, under the condition that the terminal device establishes NTN network transmission connection and performs data transmission, position information of the terminal device and ephemeris information of a currently connected satellite are obtained; calculating distance information and relative speed information of the terminal equipment and the satellite according to the position information and the ephemeris information; determining the retransmission process number based on the distance information and the relative speed information, and determining a retransmission data mode according to the retransmission process number, wherein the retransmission data mode comprises a full incremental redundancy mode and a partial incremental redundancy mode; and carrying out configuration of the current retransmission process based on the retransmission process number, and carrying out data retransmission in the retransmission data mode through the configured retransmission process. The scheme improves the NTN network transmission efficiency, and performs adaptability adjustment on the HARQ technology, so that the adaptation degree is obviously improved.
Fig. 5 is a block diagram of a module structure of an apparatus for adjusting a hybrid automatic repeat request parameter in NTN network transmission according to an embodiment of the present invention, where the apparatus is configured to execute the method for adjusting a hybrid automatic repeat request parameter in NTN network transmission provided in the foregoing embodiment, and has functional modules and beneficial effects corresponding to the execution method. As shown in fig. 5, the apparatus specifically includes:
an information obtaining module 101, configured to obtain, when a terminal device establishes NTN network transmission connection and performs data transmission, location information of the terminal device and ephemeris information of a currently connected satellite;
a data calculation module 102, configured to calculate, according to the location information and the ephemeris information, distance information and relative velocity information between the terminal device and the satellite;
a parameter determining module 103, configured to determine a retransmission process number based on the distance information and the relative speed information, and determine a retransmission data mode according to the retransmission process number, where the retransmission data mode includes a full incremental redundancy mode and a partial incremental redundancy mode;
and the retransmission execution module 104 is configured to perform configuration of a current retransmission process based on the retransmission process number, and perform data retransmission in the retransmission data mode through the configured retransmission process.
According to the scheme, under the condition that the terminal equipment establishes NTN network transmission connection and performs data transmission, the position information of the terminal equipment and the ephemeris information of the current connection satellite are obtained; calculating distance information and relative speed information of the terminal equipment and the satellite according to the position information and the ephemeris information; determining the retransmission process number based on the distance information and the relative speed information, and determining a retransmission data mode according to the retransmission process number, wherein the retransmission data mode comprises a full incremental redundancy mode and a partial incremental redundancy mode; and carrying out configuration of the current retransmission process based on the retransmission process number, and carrying out data retransmission in the retransmission data mode through the configured retransmission process. The scheme improves the NTN network transmission efficiency, and performs adaptability adjustment on the HARQ technology, so that the adaptation degree is obviously improved. Wherein, the functions executed by the modules can be respectively and selectively corresponding to the following:
in one possible embodiment, the parameter determining module 103 is specifically configured to:
determining a first retransmission process number according to the distance value recorded in the distance information;
and adjusting the first retransmission process number according to the relative speed information to obtain a second retransmission process number.
In one possible embodiment, the parameter determining module 103 is specifically configured to:
determining a distance interval in which a distance value recorded in the distance information falls, wherein different distance intervals correspond to different process numbers;
and determining the process number corresponding to the distance interval as a first retransmission process number.
In one possible embodiment, the parameter determining module 103 is specifically configured to:
determining a position change amount between the terminal equipment and the satellite according to the relative speed information;
and obtaining a corresponding process adjustment value according to the position change quantity, and adding the process adjustment value and the first retransmission process number to obtain a second retransmission process number.
In one possible embodiment, the parameter determining module 103 is specifically configured to:
when the retransmission process number is larger than a preset value, determining that the retransmission data mode is a full incremental redundancy mode; and when the retransmission process number is not greater than the preset value, determining that the retransmission data mode is a partial incremental redundancy mode.
In one possible embodiment, the parameter determining module 103 is specifically configured to:
determining the stability of the NTN network transmission connection, and acquiring connection information transmitted by a non-NTN network;
and under the condition that the stability meets the stability condition and the connection information does not meet the connection condition, carrying out the configuration of the current retransmission process based on the retransmission process number.
In one possible embodiment, the parameter determining module 103 is specifically configured to:
and increasing or decreasing the process number in the current retransmission strategy by a set number of processes every a preset time period until the process number is the retransmission process number.
Fig. 6 is a schematic structural diagram of an apparatus for adjusting a hybrid automatic repeat request parameter in NTN network transmission according to an embodiment of the present invention, where, as shown in fig. 6, the apparatus includes a processor 201, a memory 202, an input device 203, and an output device 204; the number of processors 201 in the device may be one or more, one processor 201 being taken as an example in fig. 6; the processor 201, memory 202, input devices 203, and output devices 204 in the apparatus may be connected by a bus or other means, for example in fig. 6. The memory 202 is used as a computer readable storage medium for storing a software program, a computer executable program, and modules, such as program instructions/modules corresponding to the method for adjusting hybrid automatic repeat request parameters in NTN network transmission according to the embodiments of the present invention. The processor 201 executes various functional applications of the device and data processing by running software programs, instructions and modules stored in the memory 202, that is, implements the above-described method for adjusting hybrid automatic repeat request parameters in NTN network transmission. The input means 203 may be used to receive entered numeric or character information and to generate key signal inputs related to user settings and function control of the device. The output device 204 may include a display device such as a display screen.
The embodiments of the present invention also provide a storage medium containing computer executable instructions, which when executed by a computer processor, are configured to perform a method for adjusting hybrid automatic repeat request parameters in NTN network transmissions, the method comprising:
under the condition that the terminal equipment establishes NTN network transmission connection and performs data transmission, acquiring the position information of the terminal equipment and the ephemeris information of a currently connected satellite;
calculating distance information and relative speed information of the terminal equipment and the satellite according to the position information and the ephemeris information;
determining the retransmission process number based on the distance information and the relative speed information, and determining a retransmission data mode according to the retransmission process number, wherein the retransmission data mode comprises a full incremental redundancy mode and a partial incremental redundancy mode;
and carrying out configuration of the current retransmission process based on the retransmission process number, and carrying out data retransmission in the retransmission data mode through the configured retransmission process.
It should be noted that, in the embodiment of the method and system for adjusting the hybrid automatic repeat request parameter in NTN network transmission, each unit and module included in the method and system are only divided according to the functional logic, but not limited to the above-mentioned division, so long as the corresponding functions can be realized; in addition, the specific names of the functional units are also only for distinguishing from each other, and are not used to limit the protection scope of the embodiments of the present invention.
Note that the above is only a preferred embodiment of the present invention and the technical principle applied. It will be understood by those skilled in the art that the embodiments of the present invention are not limited to the particular embodiments described herein, but are capable of numerous obvious changes, rearrangements and substitutions without departing from the scope of the embodiments of the present invention. Therefore, while the embodiments of the present invention have been described in connection with the above embodiments, the embodiments of the present invention are not limited to the above embodiments, but may include many other equivalent embodiments without departing from the spirit of the embodiments of the present invention, and the scope of the embodiments of the present invention is determined by the scope of the appended claims.
Claims (10)
- The method for adjusting the hybrid automatic repeat request parameters in the NTN network transmission is characterized by comprising the following steps:under the condition that the terminal equipment establishes NTN network transmission connection and performs data transmission, acquiring the position information of the terminal equipment and the ephemeris information of a currently connected satellite;calculating distance information and relative speed information of the terminal equipment and the satellite according to the position information and the ephemeris information;determining the retransmission process number based on the distance information and the relative speed information, and determining a retransmission data mode according to the retransmission process number, wherein the retransmission data mode comprises a full incremental redundancy mode and a partial incremental redundancy mode;and carrying out configuration of the current retransmission process based on the retransmission process number, and carrying out data retransmission in the retransmission data mode through the configured retransmission process.
- 2. The method for adjusting hybrid automatic repeat request parameters in NTN network transmission according to claim 1, wherein determining the number of retransmission processes based on the distance information and the relative speed information comprises:determining a first retransmission process number according to the distance value recorded in the distance information;and adjusting the first retransmission process number according to the relative speed information to obtain a second retransmission process number.
- 3. The method for adjusting a hybrid automatic repeat request parameter in NTN network transmission according to claim 2, wherein the determining the first number of retransmission processes according to the distance value recorded in the distance information includes:determining a distance interval in which a distance value recorded in the distance information falls, wherein different distance intervals correspond to different process numbers;and determining the process number corresponding to the distance interval as a first retransmission process number.
- 4. The method for adjusting the hybrid automatic repeat request parameters in NTN network transmission according to claim 2, wherein the adjusting the first retransmission process number according to the relative speed information to obtain the second retransmission process number includes:determining a position change amount between the terminal equipment and the satellite according to the relative speed information;and obtaining a corresponding process adjustment value according to the position change quantity, and adding the process adjustment value and the first retransmission process number to obtain a second retransmission process number.
- 5. The method for adjusting hybrid automatic repeat request parameters in NTN network transmission according to any one of claims 1-4, wherein determining a retransmission data pattern according to the number of retransmission processes comprises:when the retransmission process number is larger than a preset value, determining that the retransmission data mode is a full incremental redundancy mode; and when the retransmission process number is not greater than the preset value, determining that the retransmission data mode is a partial incremental redundancy mode.
- 6. The method for adjusting hybrid automatic repeat request parameters in NTN network transmission according to any one of claims 1-4, wherein the configuring the current retransmission process based on the number of retransmission processes comprises:determining the stability of the NTN network transmission connection, and acquiring connection information transmitted by a non-NTN network;and under the condition that the stability meets the stability condition and the connection information does not meet the connection condition, carrying out the configuration of the current retransmission process based on the retransmission process number.
- 7. The method for adjusting the hybrid automatic repeat request parameters in NTN network transmission according to claim 6, wherein the configuring the current retransmission process based on the number of retransmission processes comprises:and increasing or decreasing the process number in the current retransmission strategy by a set number of processes every a preset time period until the process number is the retransmission process number.
- An apparatus for adjusting a hybrid automatic repeat request parameter in ntn network transmission, comprising:the information acquisition module is used for acquiring the position information of the terminal equipment and the ephemeris information of the currently connected satellite under the condition that the terminal equipment establishes NTN network transmission connection and performs data transmission;the data calculation module is used for calculating distance information and relative speed information between the terminal equipment and the satellite according to the position information and the ephemeris information;the parameter determining module is used for determining the retransmission process number based on the distance information and the relative speed information and determining a retransmission data mode according to the retransmission process number, wherein the retransmission data mode comprises a full incremental redundancy mode and a partial incremental redundancy mode;and the retransmission execution module is used for carrying out the configuration of the current retransmission process based on the retransmission process number and carrying out data retransmission in the retransmission data mode through the configured retransmission process.
- 9. An apparatus for adjusting hybrid automatic repeat request parameters in NTN network transmissions, the apparatus comprising: one or more processors; storage means for storing one or more programs that, when executed by the one or more processors, cause the one or more processors to implement the method for adjusting hybrid automatic repeat request parameters in NTN network transmissions according to any one of claims 1-7.
- 10. A storage medium storing computer executable instructions which, when executed by a computer processor, are for performing the method of adjusting hybrid automatic repeat request parameters in NTN network transmissions of any of claims 1-7.
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