CN111328041A - Resource reuse mode indication method and device of Internet of vehicles V2X - Google Patents
Resource reuse mode indication method and device of Internet of vehicles V2X Download PDFInfo
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- CN111328041A CN111328041A CN201811527666.7A CN201811527666A CN111328041A CN 111328041 A CN111328041 A CN 111328041A CN 201811527666 A CN201811527666 A CN 201811527666A CN 111328041 A CN111328041 A CN 111328041A
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/30—Services specially adapted for particular environments, situations or purposes
- H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
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- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
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Abstract
The embodiment of the invention provides a resource reuse mode indication method and device of an Internet of vehicles V2X. The method is applied to a transmitting end, and comprises the following steps: when receiving a sending instruction of sending a message to a receiving end, acquiring a resource multiplexing mode carried in the sending instruction and a first identity identification number ID of the receiving end; the resource multiplexing mode comprises frequency division multiplexing and/or time division multiplexing; and carrying the first ID and indication information for indicating the resource multiplexing mode in the bypass control information SCI, and sending the information to the receiving end. The embodiment of the invention solves the problem that in the prior art, LTE V2X only supports the subframe structure form of frequency division multiplexing.
Description
Technical Field
The embodiment of the invention relates to the technical field of Internet of vehicles, in particular to a resource reuse mode indication method and device of an Internet of vehicles V2X.
Background
Information exchange between vehicles and the outside world or Vehicle networking (generally referred to as V2X) is a key technology of future intelligent transportation systems. The application of V2X will improve driving safety, reduce congestion and vehicle energy consumption, improve traffic efficiency, etc. It is based on the communication of Vehicle-to-Vehicle (V2V), Vehicle-to-Pedestrian (V2P), Vehicle-to-road Infrastructure (V2I) and Vehicle-to-application server (V2N), and carries out wireless communication and information exchange and processing between V2X.
In the LTE V2X system, two channels are defined: a Physical Sidelink shared Channel (PSCCH) and a Physical Sidelink Control Channel (PSCCH); the LTE V2X only supports a subframe structure form of frequency division multiplexing, the psch and the PSCCH adopt a frequency division multiplexing mode in a subframe, a carrier frequency band is divided into a plurality of subchannels on a frequency domain, the PSCCH only occupies two Resource Blocks (RBs) in one subchannel, and the PSCCH can occupy a plurality of subchannels; in addition, the PSCCH and PSCCH may or may not be adjacent in the frequency domain.
The PSCCH includes a Sidelink Control Information (SCI) format 1, and the frequency domain position of the PSCCH is determined by the SCI format 1. SCI format 1 mainly contains the following information: the method comprises the steps of frequency domain resource position information used for indicating initial transmission and retransmission, information used for indicating time domain intervals of initial transmission and retransmission indication bits.
Specifically, the frequency domain Resource location information for indicating the initial transmission and the retransmission is equal to a Resource Indication Value (RIV), and each RIV uniquely corresponds to a set of starting indexes of subchannels and a continuous length of subchannels.
In LTE V2X, the PSCCH and the PSCCH indicated by the PSCCH are frequency division multiplexed in the same subframe, which affects processing delay and single carrier characteristics, so the PSCCH can only be decoded after the PSCCH is decoded. The PSCCH occupies a complete subframe, so that the PSCCH can be processed only after all data of the subframe are received, and the total delay is 1ms + PSCCH processing time, which causes a large delay.
Disclosure of Invention
The embodiment of the invention provides a resource multiplexing mode indication method and device of a vehicle networking V2X, which are used for solving the problem that in the prior art, LTE V2X only supports a frequency division multiplexing subframe structure form.
On one hand, the embodiment of the invention provides a resource reuse mode indication method of a vehicle networking V2X, the method is applied to a sending end, and the method comprises the following steps:
when receiving a sending instruction of sending a message to a receiving end, acquiring a resource multiplexing mode carried in the sending instruction and a first identity identification number ID of the receiving end; the resource multiplexing mode comprises frequency division multiplexing and/or time division multiplexing;
and carrying the first ID and indication information for indicating the resource multiplexing mode in the bypass control information SCI, and sending the information to the receiving end.
On the other hand, the embodiment of the invention also provides a resource reuse mode indication method of the internet of vehicles V2X, the method is applied to a receiving end, and the method comprises the following steps:
receiving bypass control information (SCI) sent by a sending end, and acquiring indication information carried in the SCI and used for indicating a resource multiplexing mode and a first identity Identification (ID) of a target receiving end; the resource multiplexing mode comprises frequency division multiplexing and/or time division multiplexing;
and when the first ID is determined to be consistent with the second ID of the receiving end, analyzing the PSSCH of the physical side link shared channel according to the resource multiplexing mode indicated in the indication information.
On the other hand, an embodiment of the present invention further provides a resource reuse mode indication apparatus for an internet of vehicles V2X, which is applied to a sending end, and the apparatus includes:
the system comprises an indication receiving module, a resource multiplexing module and a first identity Identification (ID) module, wherein the indication receiving module is used for acquiring a resource multiplexing mode carried in a sending indication and a first ID of a receiving end when the sending indication of a message sent to the receiving end is received; the resource multiplexing mode comprises frequency division multiplexing and/or time division multiplexing;
and the sending module is used for carrying the first ID and the indication information for indicating the resource multiplexing mode in the bypass control information SCI and sending the bypass control information SCI to the receiving end.
On the other hand, the embodiment of the present invention further provides a device for indicating a resource reuse mode of an internet of vehicles V2X, which is applied to a receiving end, and the device includes:
the system comprises an SCI receiving module, a resource multiplexing mode acquiring module and a target receiving terminal, wherein the SCI receiving module is used for receiving bypass control information SCI sent by a sending terminal and acquiring indication information carried in the SCI and used for indicating a resource multiplexing mode and a first identity identification number ID of the target receiving terminal; the resource multiplexing mode comprises frequency division multiplexing and/or time division multiplexing;
and the analysis module is used for analyzing the PSSCH of the physical side link according to the resource multiplexing mode indicated in the indication information when the first ID is determined to be consistent with the second ID of the receiving end.
On the other hand, the embodiment of the present invention further provides an electronic device, which includes a memory, a processor, a bus, and a computer program stored on the memory and executable on the processor, where the processor implements the steps in the resource reuse mode indication method for the internet of vehicles V2X when executing the program.
In still another aspect, an embodiment of the present invention further provides a non-transitory computer-readable storage medium, on which a computer program is stored, where the program, when executed by a processor, implements the steps in the resource reuse mode indication method for the internet of vehicles V2X.
According to the resource reuse mode indication method and device of the Internet of vehicles V2X, when a sending instruction of sending a message to a receiving end is received, a resource reuse mode carried in the sending instruction and a first identity identification number ID of the receiving end are obtained; carrying the first ID and indication information for indicating the resource multiplexing mode in the bypass control information SCI, and sending the indication information to the receiving end to realize frequency division multiplexing and time division multiplexing modes between the PSCCH and the PSSCH; through a time division multiplexing mode, the PSCCH and the PSSCH are transmitted at different moments, so that the processing time delay can be reduced; and the resource multiplexing mode in the embodiment of the invention supports a compact SCI format so as to improve the transmission reliability of the PSCCH.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
Fig. 1 is a schematic flowchart of a resource reuse mode indication method for the internet of vehicles V2X according to an embodiment of the present invention;
fig. 2 is a second schematic flowchart of a resource reuse mode indication method for the internet of vehicles V2X according to the embodiment of the present invention;
fig. 3 is a schematic structural diagram of a resource reuse mode indicating apparatus of the internet of vehicles V2X according to an embodiment of the present invention;
fig. 4 is a second schematic structural diagram of a resource reuse mode indicating apparatus of the internet of vehicles V2X according to the embodiment of the present invention;
fig. 5 is a schematic structural diagram of an electronic device according to an embodiment of the present invention.
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. In the following description, specific details such as specific configurations and components are provided only to help the full understanding of the embodiments of the present invention. Thus, it will be apparent to those skilled in the art that various changes and modifications may be made to the embodiments described herein without departing from the scope and spirit of the invention. In addition, descriptions of well-known functions and constructions are omitted for clarity and conciseness.
It should be appreciated that reference throughout this specification to "an embodiment" or "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present invention. Thus, the appearances of the phrase "in an embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
In various embodiments of the present invention, it should be understood that the sequence numbers of the following processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present invention.
In the embodiments provided herein, it should be understood that "B corresponding to a" means that B is associated with a from which B can be determined. It should also be understood that determining B from a does not mean determining B from a alone, but may be determined from a and/or other information.
Fig. 1 shows a schematic flow chart of a resource reuse mode indication method of an internet of vehicles V2X according to an embodiment of the present invention.
As shown in fig. 1, the resource reuse mode indication method for the internet of vehicles V2X provided in the embodiment of the present invention is applied to a sending end, and the method specifically includes the following steps:
The sending end can be a vehicle or other equipment in the internet of vehicles. The indication to send may come from an indication preconfigured by the core network or from an indication from the user.
After receiving a sending instruction, a sending end obtains a resource multiplexing mode carried in the sending instruction and a first identity Identification (ID) of a target receiving end, wherein the first ID is used for identifying the identity of the receiving end.
Specifically, the resource multiplexing mode includes frequency division multiplexing and/or time division multiplexing. Frequency Division Multiplexing (FDM) is the division of the total bandwidth used for a transmission channel into several sub-bands, so that multiple signals are transmitted on different sub-bands to achieve the purpose of Multiplexing.
Time Division Multiplexing (TDM) is to transmit different signals in different Time periods of the same physical connection, so as to achieve the purpose of Multiplexing.
And 102, carrying the first ID and indication information for indicating the resource multiplexing mode in the bypass control information SCI, and sending the bypass control information SCI to the receiving end.
The SCI information includes information such as a modulation and coding mode and a retransmission indication, and the indication information and the first ID are carried in the SCI, so that after the receiving end receives the SCI, the receiving end analyzes the pscch according to the resource multiplexing mode indicated by the indication information, and two resource multiplexing modes of V2X are implemented.
For example, an indication information, such as a resource multiplexing indication parameter multiplex _ index, is defined in the SCI. The multiplex _ index ═ 0 indicates time division multiplexing, and the multiplex _ index ═ 1 indicates frequency division multiplexing.
If the multiplex _ index is 0, the resource multiplexing information in the SCI is time division multiplexing information. The time division multiplexing information is only used for indicating the position of the PSSCH in the time domain, and the PSSCH and the PSCCH occupy the same frequency domain resource in the frequency domain.
If multiplex _ index is 1, the resource multiplexing information in the SCI is frequency division multiplexing information. The frequency division multiplexing information is only used for indicating the position of the PSSCH in the frequency domain, and the PSSCH and the PSCCH occupy the same time domain resource in the time domain.
In the above embodiment of the present invention, when receiving a sending instruction for sending a message to a receiving end, a resource multiplexing mode carried in the sending instruction and a first identity identification number ID of the receiving end are obtained; carrying the first ID and indication information for indicating the resource multiplexing mode in the bypass control information SCI, and sending the indication information to the receiving end to realize frequency division multiplexing and time division multiplexing modes between the PSCCH and the PSSCH; through a time division multiplexing mode, the PSCCH and the PSSCH are transmitted at different moments, so that the processing time delay can be reduced; and the resource multiplexing mode in the embodiment of the invention supports a compact SCI format so as to improve the reliability of the PSCCH. The invention solves the problem that in the prior art, LTE V2X only supports the subframe structure form of frequency division multiplexing.
Optionally, in this embodiment of the present invention, after the step of carrying the first ID and the indication information for indicating the resource multiplexing mode in the bypass control information SCI and sending the information to the receiving end, the method includes:
if the resource multiplexing mode is frequency division multiplexing, in a first preset time domain position, sending a physical side link control channel PSCCH at a first preset frequency domain position and a physical side link shared channel PSSCH at a second preset frequency domain position to the receiving end;
and if the resource multiplexing mode is time division multiplexing, in a third preset frequency domain position, sending the physical side link control channel PSCCH in a second preset time domain position and the physical side link shared channel PSSCH in a third preset time domain position to the receiving end.
If the resource multiplexing mode is frequency division multiplexing, the PSSCH and the PSCCH occupy the same position in a time domain, namely a first preset time domain position; and sending the PSCCH at the first preset frequency domain position and the PSSCH at the second preset frequency domain position to the receiving end at the first preset time domain position.
If the resource multiplexing mode is time division multiplexing, the PSSCH and the PSCCH occupy the same position on the frequency domain, namely a third preset frequency domain position; and sending the PSCCH to the receiving end in a third preset frequency domain position in a second preset time domain position, and sending the PSSCH to the receiving end in a third preset time domain position.
Optionally, in the embodiment of the present invention, if the resource multiplexing mode is frequency division multiplexing, the SCI further carries a second preset frequency domain position;
and/or
If the resource multiplexing mode is time division multiplexing, the SCI further carries a third preset time domain position.
Therein, an indication information, such as a resource multiplexing indication parameter multiplex _ index, is defined in the SCI. The multiplex _ index ═ 0 indicates time division multiplexing, and the multiplex _ index ═ 1 indicates frequency division multiplexing.
If the multiplex _ index is 0, the resource multiplexing information in the SCI is time division multiplexing information, and at this time, the PSCCH is placed at a third preset frequency domain position and a second preset time domain position, and the third preset time domain position is carried in the SCI and sent to the receiving end, so that the receiving end can analyze the third preset time domain position.
Similarly, if the multiplex _ index is 1, the resource multiplexing information in the SCI is frequency division multiplexing information, and at this time, the PSCCH is placed at the first preset time domain position and the first preset frequency domain position, and the second preset frequency domain position is carried in the SCI and sent to the receiving end, so that the receiving end can analyze the received signal.
In the above embodiment of the present invention, when receiving a sending instruction for sending a message to a receiving end, a resource multiplexing mode carried in the sending instruction and a first identity identification number ID of the receiving end are obtained; carrying the first ID and indication information for indicating the resource multiplexing mode in the bypass control information SCI, and sending the indication information to the receiving end to realize frequency division multiplexing and time division multiplexing modes between the PSCCH and the PSSCH; through a time division multiplexing mode, the PSCCH and the PSSCH are transmitted at different moments, so that the processing time delay can be reduced; and the resource multiplexing mode in the embodiment of the invention supports a compact SCI format so as to improve the reliability of the PSCCH.
The resource reuse mode indication method of the internet of vehicles V2X provided by the embodiment of the present invention is described above from the sending end side, and the resource reuse mode indication method of the internet of vehicles V2X provided by the embodiment of the present invention is described below from the receiving end side.
As shown in fig. 2, the resource reuse mode indication method for the internet of vehicles V2X provided in the embodiment of the present invention is applied to a receiving end, and the method specifically includes the following steps:
The receiving end can be a vehicle or other equipment in the internet of vehicles.
It should be noted that the target receiver in the SCI may or may not be the same as the execution subject (receiver) in this embodiment.
After receiving the SCI, the receiving terminal acquires indication information carried in the SCI and used for indicating a resource multiplexing mode and a first identity identification number ID of a target receiving terminal; the first ID is used to identify the identity of the receiving end.
Specifically, the resource multiplexing mode includes frequency division multiplexing and/or time division multiplexing. The FDM is a method of dividing the total bandwidth of a transmission channel into several sub-bands, so that multiple signals are transmitted in different sub-bands to achieve the purpose of multiplexing.
Time division multiplexing TDM is to transmit different signals in different time periods of the same physical connection to achieve the purpose of multiplexing.
The SCI information comprises information such as a modulation and coding mode, a retransmission indication and the like, the sending end carries the indication information and the first ID in the SCI, so that after the receiving end receives the SCI, when the first ID is determined to be consistent with the second ID of the receiving end, the receiving end determines that the receiving end is the target receiving end, the PSSCH is analyzed according to the resource multiplexing mode indicated by the indication information, and two resource multiplexing modes of V2X are achieved.
For example, an indication information, such as a resource multiplexing indication parameter multiplex _ index, is defined in the SCI. The multiplex _ index ═ 0 indicates time division multiplexing, and the multiplex _ index ═ 1 indicates frequency division multiplexing.
If the multiplex _ index is 0, the resource multiplexing information in the SCI is time division multiplexing information. The time division multiplexing information is only used for indicating the position of the PSSCH in the time domain, and the PSSCH and the PSCCH occupy the same frequency domain resource in the frequency domain.
If multiplex _ index is 1, the resource multiplexing information in the SCI is frequency division multiplexing information. The frequency division multiplexing information is only used for indicating the position of the PSSCH in the frequency domain, and the PSSCH and the PSCCH occupy the same time domain resource in the time domain.
In the above embodiment of the present invention, the bypass control information SCI sent by the sending end is received, and the indication information for indicating the resource multiplexing mode and the first identity identification number ID of the target receiving end, which are carried in the SCI, are obtained; when the first ID is determined to be consistent with the second ID of the receiving end, analyzing a physical side link shared channel PSSCH between the receiving end and the sending end according to a resource multiplexing mode indicated in the indication information, and realizing frequency division multiplexing and time division multiplexing modes of communication between the receiving end and the sending end; through a time division multiplexing mode, the PSCCH and the PSSCH are transmitted at different moments, so that the processing time delay can be reduced; and the resource multiplexing mode in the embodiment of the invention supports a compact SCI format so as to improve the reliability of the PSCCH. The invention solves the problem that in the prior art, LTE V2X only supports the subframe structure form of frequency division multiplexing.
Optionally, in this embodiment of the present invention, the step of analyzing the physical side link shared channel PSSCH between the sender and the base station according to the resource multiplexing mode indicated in the indication information includes:
acquiring time-frequency position information of PSSCH carried in SCI;
and analyzing the PSSCH of the physical side link shared channel according to the resource multiplexing mode and the time-frequency position information.
Therein, an indication information, such as a resource multiplexing indication parameter multiplex _ index, is defined in the SCI. The multiplex _ index ═ 0 indicates time division multiplexing, and the multiplex _ index ═ 1 indicates frequency division multiplexing.
The receiving end obtains the resource multiplexing indication parameter information carried in the SCI, if the multiplex _ index is 0, the resource multiplexing information in the SCI is time division multiplexing information, and at this time, a third preset frequency domain position, a second preset time domain position and a third preset time domain position in the time-frequency position information are obtained so as to perform analysis.
Similarly, if the multiplex _ index is 1, the resource multiplexing information in the SCI is frequency division multiplexing information, and at this time, a first preset time domain position, a first preset frequency domain position, and a second preset frequency domain position in the time-frequency position information are obtained for analysis.
Optionally, in this embodiment of the present invention, the step of analyzing the psch according to the resource multiplexing mode and the time-frequency location information includes:
if the resource multiplexing mode is frequency division multiplexing, acquiring a first preset time domain position and a first preset frequency domain position of the PSCCH in the time-frequency position information and a second preset frequency domain position contained in the SCI;
and analyzing the PSSCH in the physical side link shared channel in the first preset time domain position and in the second preset frequency domain position.
If the resource multiplexing mode is frequency division multiplexing, the PSSCH and the PSCCH occupy the same position in a time domain, namely a first preset time domain position; and acquiring a first preset time domain position, a first preset frequency domain position and a second preset frequency domain position contained in the SCI, which are indicated in the time-frequency position information, analyzing the PSCCH in the first preset frequency domain position in the first preset time domain position, and analyzing the PSSCH in the second preset frequency domain position to realize a frequency division multiplexing mode of communication with a transmitting end.
Optionally, in this embodiment of the present invention, the step of analyzing the psch according to the resource multiplexing mode and the time-frequency location information includes:
if the resource multiplexing mode is time division multiplexing, acquiring a third preset frequency domain position and a second preset time domain position of the PSCCH in the time-frequency position information and a third preset time domain position contained in the SCI;
and analyzing the PSSCH of the physical side link in the third preset time domain position at the third preset frequency domain position.
If the resource multiplexing mode is time division multiplexing, the PSSCH and the PSCCH occupy the same position on the frequency domain, namely a third preset frequency domain position; acquiring a third preset frequency domain position, a second preset time domain position and a third preset time domain position which are indicated in the time frequency position information; and resolving the PSCCH in the second preset time domain position and resolving the PSSCH in the third preset time domain position at the third preset frequency domain position.
In the above embodiment of the present invention, the bypass control information SCI sent by the sending end is received, and the indication information for indicating the resource multiplexing mode and the first identity identification number ID of the target receiving end, which are carried in the SCI, are obtained; when the first ID is determined to be consistent with the second ID of the receiving end, analyzing a physical side link shared channel PSSCH between the receiving end and the sending end according to a resource multiplexing mode indicated in the indication information, and realizing frequency division multiplexing and time division multiplexing modes of communication between the receiving end and the sending end; through a time division multiplexing mode, the PSCCH and the PSSCH are transmitted at different moments, so that the processing time delay can be reduced; and the resource multiplexing mode in the embodiment of the invention supports a compact SCI format so as to improve the reliability of the PSCCH.
The resource reuse mode indication method of the internet of vehicles V2X according to the embodiment of the present invention is described above, and a resource reuse mode indication apparatus of the internet of vehicles V2X according to the embodiment of the present invention is described below with reference to the accompanying drawings.
Referring to fig. 3, an embodiment of the present invention provides a resource reuse mode indication apparatus for an internet of vehicles V2X, where the apparatus is applied to a sending end, and the apparatus includes:
an indication receiving module 301, configured to, when receiving a sending indication of sending a message to a receiving end, obtain a resource multiplexing mode carried in the sending indication and a first identity identifier ID of the receiving end; the resource multiplexing mode includes frequency division multiplexing and/or time division multiplexing.
The sending end can be a vehicle or other equipment in the internet of vehicles. The indication to send may come from an indication preconfigured by the core network or from an indication from the user.
After receiving a sending instruction, a sending end obtains a resource multiplexing mode carried in the sending instruction and a first identity identification number ID of a target receiving end, wherein the first ID is used for identifying the identity of the receiving end.
A sending module 302, configured to carry the first ID and indication information for indicating the resource multiplexing mode in the bypass control information SCI, and send the first ID and the indication information to the receiving end.
The SCI information includes information such as a modulation and coding mode and a retransmission indication, and the indication information and the first ID are carried in the SCI, so that after the receiving end receives the SCI, the receiving end analyzes the pscch according to the resource multiplexing mode indicated by the indication information, and two resource multiplexing modes of V2X are implemented.
Optionally, in this embodiment of the present invention, the sending module is further configured to:
if the resource multiplexing mode is frequency division multiplexing, in a first preset time domain position, sending a physical side link control channel PSCCH at a first preset frequency domain position and a physical side link shared channel PSSCH at a second preset frequency domain position to the receiving end;
and if the resource multiplexing mode is time division multiplexing, in a third preset frequency domain position, sending the physical side link control channel PSCCH in a second preset time domain position and the physical side link shared channel PSSCH in a third preset time domain position to the receiving end.
Optionally, in the embodiment of the present invention, if the resource multiplexing mode is frequency division multiplexing, the SCI further carries a second preset frequency domain position;
and/or
If the resource multiplexing mode is time division multiplexing, the SCI further carries the third preset time domain position.
In the above embodiment of the present invention, when receiving a sending instruction for sending a message to a receiving end, the instruction receiving module 301 obtains a resource multiplexing mode carried in the sending instruction and a first identity identification number ID of the receiving end; the sending module 302 carries the first ID and indication information for indicating the resource multiplexing mode in the bypass control information SCI, and sends the first ID and the indication information to the receiving end, so as to implement frequency division multiplexing and time division multiplexing modes between the PSCCH and the PSCCH; through a time division multiplexing mode, the PSCCH and the PSSCH are transmitted at different moments, so that the processing time delay can be reduced; and the resource multiplexing mode in the embodiment of the invention supports a compact SCI format so as to improve the reliability of the PSCCH.
Referring to fig. 4, an embodiment of the present invention provides a resource reuse mode indication apparatus for an internet of vehicles V2X, which is applied to a receiving end, and the apparatus includes:
an SCI receiving module 401, configured to receive bypass control information SCI sent by a sending end, and obtain indication information used for indicating a resource multiplexing mode and a first identity identifier ID of a target receiving end, where the indication information is carried in the SCI; the resource multiplexing mode includes frequency division multiplexing and/or time division multiplexing.
The receiving end can be a vehicle or other equipment in the internet of vehicles.
It should be noted that the target receiver in the SCI may or may not be the same as the execution subject (receiver) in this embodiment.
After receiving the SCI, the receiving terminal acquires indication information carried in the SCI and used for indicating a resource multiplexing mode and a first identity identification number ID of a target receiving terminal; the first ID is used to identify the identity of the receiving end.
An analyzing module 402, configured to analyze the psch according to the resource multiplexing mode indicated in the indication information when it is determined that the first ID is consistent with the second ID of the receiving end.
The SCI information comprises information such as a modulation and coding mode, a retransmission indication and the like, the sending end carries the indication information and the first ID in the SCI, so that after the receiving end receives the SCI, when the first ID is determined to be consistent with the second ID of the receiving end, the receiving end determines that the receiving end is the target receiving end, the PSSCH is analyzed according to the resource multiplexing mode indicated by the indication information, and two resource multiplexing modes of V2X are achieved.
Optionally, in this embodiment of the present invention, the parsing module 402 includes:
the acquisition submodule is used for acquiring time-frequency position information of the PSSCH carried in the SCI;
and the analysis submodule is used for analyzing the PSSCH of the physical side link shared channel according to the resource multiplexing mode and the time-frequency position information.
Optionally, in this embodiment of the present invention, the parsing sub-module is configured to:
if the resource multiplexing mode is frequency division multiplexing, acquiring a first preset time domain position and a first preset frequency domain position of the PSCCH in the time-frequency position information and a second preset frequency domain position contained in the SCI;
and analyzing the PSSCH in the physical side link shared channel in the first preset time domain position and in the second preset frequency domain position.
Optionally, in this embodiment of the present invention, the parsing sub-module is configured to:
if the resource multiplexing mode is time division multiplexing, acquiring a third preset frequency domain position and a second preset time domain position of the PSCCH in the time-frequency position information and a third preset time domain position contained in the SCI;
and analyzing the PSSCH of the physical side link in the third preset time domain position at the third preset frequency domain position.
In the above embodiment of the present invention, the SCI receiving module 401 receives the bypass control information SCI sent by the sending end, and obtains the indication information used for indicating the resource multiplexing mode and the first identity identification number ID of the target receiving end, which are carried in the SCI; when the parsing module 402 determines that the first ID is consistent with the second ID of the receiving end, it parses a physical sidelink shared channel pscch with the transmitting end according to a resource multiplexing mode indicated in the indication information, so as to implement a frequency division multiplexing and time division multiplexing mode of communication with the transmitting end; through a time division multiplexing mode, the PSCCH and the PSSCH are transmitted at different moments, so that the processing time delay can be reduced; and the resource multiplexing mode in the embodiment of the invention supports a compact SCI format so as to improve the reliability of the PSCCH.
Fig. 5 is a schematic structural diagram of an electronic device according to yet another embodiment of the present invention.
As shown in fig. 5, the electronic device may include: a processor (processor)510, a communication Interface (Communications Interface)520, a memory (memory)530 and a communication bus 540, wherein the processor 510, the communication Interface 520 and the memory 530 communicate with each other via the communication bus 540. Processor 510 may call logic instructions in memory 530 to perform the following method:
when receiving a sending instruction of sending a message to a receiving end, acquiring a resource multiplexing mode carried in the sending instruction and a first identity identification number ID of the receiving end; the resource multiplexing mode comprises frequency division multiplexing and/or time division multiplexing;
and carrying the first ID and indication information for indicating the resource multiplexing mode in the bypass control information SCI, and sending the information to the receiving end.
Or
Receiving bypass control information (SCI) sent by a sending end, and acquiring indication information carried in the SCI and used for indicating a resource multiplexing mode and a first identity Identification (ID) of a target receiving end; the resource multiplexing mode comprises frequency division multiplexing and/or time division multiplexing;
and when the first ID is determined to be consistent with the second ID of the receiving end, analyzing the PSSCH of the physical side link shared channel according to the resource multiplexing mode indicated in the indication information.
Furthermore, the logic instructions in the memory 530 may be implemented in the form of software functional units and stored in a computer readable storage medium when the software functional units are sold or used as independent products.
In another embodiment of the present invention, a non-transitory computer-readable storage medium is provided, where a computer program is stored on the non-transitory computer-readable storage medium, and when the computer program is executed by a processor, the steps in the method provided in the foregoing embodiment of the present invention are implemented, and details of the implementation are not repeated.
Based on such understanding, the technical solution of the present invention may be embodied in the form of 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, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. 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 or an optical disk, and other various media capable of storing program codes.
The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods described in the embodiments or some parts of the embodiments.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (11)
1. A resource reuse mode indication method of a vehicle networking V2X is applied to a sending end, and is characterized by comprising the following steps:
when receiving a sending instruction of sending a message to a receiving end, acquiring a resource multiplexing mode carried in the sending instruction and a first identity identification number ID of the receiving end; the resource multiplexing mode comprises frequency division multiplexing and/or time division multiplexing;
and carrying the first ID and indication information for indicating the resource multiplexing mode in the bypass control information SCI, and sending the information to the receiving end.
2. The method according to claim 1, wherein after the step of carrying the first ID and the indication information for indicating the resource multiplexing mode in the bypass control information SCI and sending the bypass control information SCI to the receiving end, the method comprises:
if the resource multiplexing mode is frequency division multiplexing, in a first preset time domain position, sending a physical side link control channel PSCCH at a first preset frequency domain position and a physical side link shared channel PSSCH at a second preset frequency domain position to the receiving end;
and if the resource multiplexing mode is time division multiplexing, in a third preset frequency domain position, sending the physical side link control channel PSCCH in a second preset time domain position and the physical side link shared channel PSSCH in a third preset time domain position to the receiving end.
3. The method of claim 2 wherein if the resource multiplexing mode is frequency division multiplexing, the SCI further carries the second predetermined frequency domain location;
and/or
If the resource multiplexing mode is time division multiplexing, the SCI further carries the third preset time domain position.
4. A resource reuse mode indication method of a vehicle networking V2X is applied to a receiving end, and is characterized in that the method comprises the following steps:
receiving bypass control information (SCI) sent by a sending end, and acquiring indication information carried in the SCI and used for indicating a resource multiplexing mode and a first identity Identification (ID) of a target receiving end; the resource multiplexing mode comprises frequency division multiplexing and/or time division multiplexing;
and when the first ID is determined to be consistent with the second ID of the receiving end, analyzing the PSSCH of the physical side link shared channel according to the resource multiplexing mode indicated in the indication information.
5. The method according to claim 4, wherein the step of resolving the PSSCH according to the resource multiplexing mode indicated in the indication information comprises:
acquiring time-frequency position information of PSCCH carrying SCI;
acquiring time-frequency position information of PSSCH carried in SCI;
and analyzing the PSSCH of the physical side link shared channel according to the resource multiplexing mode and the time-frequency position information.
6. The method of claim 5, wherein the step of resolving the PSSCH according to the resource multiplexing mode and the time-frequency location information comprises:
if the resource multiplexing mode is frequency division multiplexing, acquiring a first preset time domain position and a first preset frequency domain position of the PSCCH in the time-frequency position information and a second preset frequency domain position contained in the SCI;
and analyzing the PSSCH in the physical side link shared channel in the first preset time domain position and in the second preset frequency domain position.
7. The method of claim 5, wherein the step of resolving the PSSCH according to the resource multiplexing mode and the time-frequency location information comprises:
if the resource multiplexing mode is time division multiplexing, acquiring a third preset frequency domain position and a second preset time domain position of the PSCCH in the time-frequency position information and a third preset time domain position contained in the SCI;
and analyzing the PSSCH of the physical side link in the third preset time domain position at the third preset frequency domain position.
8. A resource reuse mode indicating device of a vehicle networking V2X is applied to a transmitting end, and is characterized in that the device comprises:
the system comprises an indication receiving module, a resource multiplexing module and a first identity Identification (ID) module, wherein the indication receiving module is used for acquiring a resource multiplexing mode carried in a sending indication and a first ID of a receiving end when the sending indication of a message sent to the receiving end is received; the resource multiplexing mode comprises frequency division multiplexing and/or time division multiplexing;
and the sending module is used for carrying the first ID and the indication information for indicating the resource multiplexing mode in the bypass control information SCI and sending the bypass control information SCI to the receiving end.
9. A resource reuse mode indication device of Internet of vehicles V2X, applied to a receiving end, the device comprises:
the system comprises an SCI receiving module, a resource multiplexing mode acquiring module and a target receiving terminal, wherein the SCI receiving module is used for receiving bypass control information SCI sent by a sending terminal and acquiring indication information carried in the SCI and used for indicating a resource multiplexing mode and a first identity identification number ID of the target receiving terminal; the resource multiplexing mode comprises frequency division multiplexing and/or time division multiplexing;
and the analysis module is used for analyzing the PSSCH of the physical side link according to the resource multiplexing mode indicated in the indication information when the first ID is determined to be consistent with the second ID of the receiving end.
10. An electronic device, comprising a memory, a processor, a bus and a computer program stored on the memory and executable on the processor, the processor implementing the steps in the resource reuse mode indication method of the internet of vehicles V2X according to any one of claims 1 to 7 when executing the program.
11. A non-transitory computer-readable storage medium having stored thereon a computer program, characterized in that: the program when executed by a processor implements the steps in the resource reuse pattern indication method of the internet of vehicles V2X according to any of claims 1 to 7.
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Application publication date: 20200623 |