CN109565647B - Information transmission method, device and system between Internet of vehicles equipment - Google Patents
Information transmission method, device and system between Internet of vehicles equipment Download PDFInfo
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- CN109565647B CN109565647B CN201880000901.7A CN201880000901A CN109565647B CN 109565647 B CN109565647 B CN 109565647B CN 201880000901 A CN201880000901 A CN 201880000901A CN 109565647 B CN109565647 B CN 109565647B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- 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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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W56/00—Synchronisation arrangements
- H04W56/001—Synchronization between nodes
Abstract
The disclosure discloses an information transmission method between vehicle networking devices, and belongs to the technical field of wireless communication. The method comprises the following steps: the first car networking equipment sends a wireless signal containing a synchronous broadcast block, wherein the synchronous broadcast block is used for bearing a synchronous signal and a physical broadcast channel, and the synchronous broadcast block is positioned on 3 continuous orthogonal frequency division multiplexing OFDM symbols on a time domain; and the second car networking equipment receives the wireless signal, detects the synchronous broadcast block in the wireless signal and acquires the information carried by the synchronous broadcast block according to the detection result. The first car networking equipment broadcasts the synchronous broadcast block containing the synchronous signal and the physical broadcast channel through 3 OFDM symbols to the outside, so that the second car networking equipment obtains the information carried by the synchronous broadcast block according to the detection result of the synchronous broadcast block, the resource occupation amount of the synchronous broadcast block on a time domain is reduced, and the transmission efficiency of the synchronous broadcast block is improved.
Description
Technical Field
The present disclosure relates to the field of wireless communication technologies, and in particular, to a method, an apparatus, and a system for transmitting information between devices in a vehicle networking system.
Background
The internet of vehicles is a new development direction of automobile technology combining technologies such as navigation positioning, wireless communication and remote sensing.
In the related art, synchronization and information transmission between devices are performed between the internet-of-vehicles devices through broadcasting system information. For example, one piece of car networking equipment can send the synchronization signal and the system information of the car networking equipment in a broadcasting mode, and after the other piece of car networking equipment receives the synchronization signal and the system information, the other piece of car networking equipment carries out signal synchronization through the synchronization signal and communicates with the car networking equipment according to the system information.
Disclosure of Invention
The present disclosure provides an information transmission method between car networking devices. The technical scheme is as follows:
according to a first aspect of the embodiments of the present disclosure, there is provided an information transmission method between devices in a vehicle networking system, the method including:
the method comprises the steps that a first car networking device sends a wireless signal containing a synchronous broadcast block, wherein the synchronous broadcast block is used for bearing a synchronous signal and a physical broadcast channel, and the synchronous broadcast block is located on 3 continuous Orthogonal Frequency Division Multiplexing (OFDM) symbols in a time domain;
the second vehicle networking device receives the wireless signal;
the second vehicle networking device detecting the synchronized broadcast block in the wireless signal;
and the second vehicle networking equipment acquires the information carried by the synchronous broadcast block according to the detection result.
According to a second aspect of the embodiments of the present disclosure, there is provided an information transmission method between internet of vehicles devices, the method being performed by a second internet of vehicles device, the method including:
receiving a wireless signal sent by first car networking equipment;
detecting a synchronous broadcast block in the received wireless signal, wherein the synchronous broadcast block is used for carrying a synchronous signal and a physical broadcast channel, and the synchronous broadcast block occupies 3 continuous Orthogonal Frequency Division Multiplexing (OFDM) symbols in a time domain;
and acquiring the information carried by the synchronous broadcast block according to the detection result.
Optionally, the synchronization signal includes a primary synchronization signal and a secondary synchronization signal;
the primary synchronization signal is located in a first OFDM symbol, and the secondary synchronization signal is located in a second OFDM symbol.
Optionally, the physical broadcast channel is located in a third OFDM symbol;
alternatively, the first and second electrodes may be,
the physical broadcast channel is located in a third OFDM symbol and at least one of the first OFDM symbol and the second OFDM symbol.
Optionally, the number of resource blocks occupied by the physical broadcast channel in the frequency domain is greater than the number of resource blocks occupied by the primary synchronization signal or the secondary synchronization signal in the frequency domain.
Optionally, the subcarrier spacing of the wireless signal is a subcarrier spacing determined according to a frequency band in which the wireless signal is located; the subcarrier spacing is 15kHz, 30kHz or 60 kHz.
Optionally, a part of resource blocks occupied by the physical broadcast channel are used to carry demodulation reference signals.
Optionally, a part of signals in the demodulation reference signal includes index information of the synchronous broadcast block;
or, all signals in the demodulation reference signal contain index information of the synchronous broadcast block;
or, the demodulation reference signal does not contain index information of the synchronization broadcast block.
Optionally, the frequency band corresponding to the index information of the synchronized broadcast block is all or part of at least one designated frequency band.
Optionally, the period of the synchronized broadcast block is all or part of at least one designated period.
According to a third aspect of the embodiments of the present disclosure, there is provided an information transmission method between internet of vehicles devices, the method being performed by a first internet of vehicles device, the method including:
generating information carried by a synchronous broadcast block, wherein the synchronous broadcast block is used for carrying a synchronous signal and a physical broadcast channel, and the synchronous broadcast block is positioned on 3 continuous Orthogonal Frequency Division Multiplexing (OFDM) symbols on a time domain;
and sending a wireless signal containing the synchronous broadcast block according to the information carried by the synchronous broadcast block so that the second vehicle networking equipment can detect the synchronous broadcast block in the wireless signal and acquire the information carried by the synchronous broadcast block according to the detection result.
According to a fourth aspect of the embodiments of the present disclosure, there is provided an information transmission apparatus between devices in a vehicle networking system, the apparatus being used in a second vehicle networking device, the apparatus including:
the signal receiving module is used for receiving a wireless signal sent by the first car networking device;
a detection module, configured to detect a synchronous broadcast block in the received wireless signal, where the synchronous broadcast block is used to carry a synchronous signal and a physical broadcast channel, and the synchronous broadcast block occupies 3 consecutive OFDM symbols in a time domain;
and the information acquisition module is used for acquiring the information carried by the synchronous broadcast block according to the detection result.
Optionally, the synchronization signal includes a primary synchronization signal and a secondary synchronization signal;
the primary synchronization signal is located in a first OFDM symbol, and the secondary synchronization signal is located in a second OFDM symbol.
Optionally, the physical broadcast channel is located in a third OFDM symbol;
alternatively, the first and second electrodes may be,
the physical broadcast channel is located in a third OFDM symbol and at least one of the first OFDM symbol and the second OFDM symbol.
Optionally, the number of resource blocks occupied by the physical broadcast channel in the frequency domain is greater than the number of resource blocks occupied by the primary synchronization signal or the secondary synchronization signal in the frequency domain.
Optionally, the subcarrier spacing of the wireless signal is a subcarrier spacing determined according to a frequency band in which the wireless signal is located; the subcarrier spacing is 15kHz, 30kHz or 60 kHz.
Optionally, a part of resource blocks occupied by the physical broadcast channel are used to carry demodulation reference signals.
Optionally, a part of signals in the demodulation reference signal includes index information of the synchronous broadcast block;
or, all signals in the demodulation reference signal contain index information of the synchronous broadcast block;
or, the demodulation reference signal does not contain index information of the synchronization broadcast block.
Optionally, the frequency band corresponding to the index information of the synchronized broadcast block is all or part of at least one designated frequency band.
Optionally, the period of the synchronized broadcast block is all or part of at least one designated period.
According to a fifth aspect of the embodiments of the present disclosure, there is provided an information transmission apparatus between internet of vehicles, the apparatus being used in a first internet of vehicles, the apparatus including:
an information generating module, configured to generate information carried by a synchronous broadcast block, where the synchronous broadcast block is used to carry a signal and a physical broadcast channel synchronously, and the synchronous broadcast block is located on 3 consecutive orthogonal frequency division multiplexing OFDM symbols in a time domain;
and the signal sending module is used for sending a wireless signal containing the synchronous broadcast block according to the information carried by the synchronous broadcast block so that the second vehicle networking equipment can detect the synchronous broadcast block in the wireless signal and acquire the information carried by the synchronous broadcast block according to the detection result.
According to a sixth aspect of the embodiments of the present disclosure, there is provided an information transmission system between devices of a vehicle networking, the system including: the first car networking device and the second car networking device;
the first Internet of vehicles equipment comprises an information transmission device between the Internet of vehicles equipment as shown in the fifth aspect;
the second vehicle networking device comprises an information transmission device between the vehicle networking devices as shown in the fourth aspect or any optional mode of the fourth aspect.
According to a seventh aspect of the embodiments of the present disclosure, there is provided an information transmission apparatus between vehicle networking devices, for use in a second vehicle networking device, the apparatus including:
a processor;
a memory for storing executable instructions of the processor;
wherein the processor is configured to:
receiving a wireless signal sent by first car networking equipment;
detecting a synchronous broadcast block in the received wireless signal, wherein the synchronous broadcast block is used for carrying a synchronous signal and a physical broadcast channel, and the synchronous broadcast block occupies 3 continuous Orthogonal Frequency Division Multiplexing (OFDM) symbols in a time domain;
and acquiring the information carried by the synchronous broadcast block according to the detection result.
According to an eighth aspect of the embodiments of the present disclosure, there is provided an information transmission apparatus between internet of vehicles, which is used in a first internet of vehicles, the apparatus including:
a processor;
a memory for storing executable instructions of the processor;
wherein the processor is configured to:
generating information carried by a synchronous broadcast block, wherein the synchronous broadcast block is used for carrying a synchronous signal and a physical broadcast channel, and the synchronous broadcast block is positioned on 3 continuous Orthogonal Frequency Division Multiplexing (OFDM) symbols on a time domain;
and sending a wireless signal containing the synchronous broadcast block according to the information carried by the synchronous broadcast block so that the second vehicle networking equipment can detect the synchronous broadcast block in the wireless signal and acquire the information carried by the synchronous broadcast block according to the detection result.
According to a ninth aspect of the embodiments of the present disclosure, a computer-readable storage medium is provided, and the computer-readable storage medium contains executable instructions that are called by a processor in a second vehicle networking device to implement the information transmission method between the vehicle networking devices according to the second aspect or any one of the alternatives of the second aspect.
According to a tenth aspect of the embodiments of the present disclosure, a computer-readable storage medium is provided, where the computer-readable storage medium contains executable instructions, and a processor in a first vehicle networking device calls the executable instructions to implement the information transmission method between the vehicle networking devices according to the third aspect.
The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects:
the first car networking equipment broadcasts the synchronous broadcast block containing the synchronous signal and the physical broadcast channel through 3 OFDM symbols to the outside, so that the second car networking equipment obtains the information carried by the synchronous broadcast block according to the detection result of the synchronous broadcast block, the resource occupation amount of the synchronous broadcast block on a time domain is reduced, and the transmission efficiency of the synchronous broadcast block is improved.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.
Fig. 1 is a diagram illustrating a synchronous broadcast block architecture in the related art.
FIG. 2 is a schematic illustration of an exemplary environment in which a method of information transfer between Internet of vehicles devices is shown in accordance with some exemplary embodiments;
FIG. 3 is a flow chart illustrating a method of information transfer between vehicle networking devices, according to an exemplary embodiment;
FIG. 4 is a flow chart illustrating a method of information transfer between vehicle networking devices, according to an exemplary embodiment;
FIG. 5 is a flow chart illustrating a method of information transfer between vehicle networking devices, according to an exemplary embodiment;
FIG. 6 is a flow chart illustrating a method of information transfer between vehicle networking devices, according to an exemplary embodiment;
fig. 7 is a schematic structural diagram of a synchronous broadcast block according to the embodiment shown in fig. 6;
FIG. 8 is a block diagram illustrating another synchronous broadcast block according to the embodiment shown in FIG. 6;
FIG. 9 is a schematic diagram of a structure of another synchronous broadcast block according to the embodiment shown in FIG. 6;
FIG. 10 is a block diagram illustrating an apparatus for information transfer between Internet of vehicle devices in accordance with an exemplary embodiment;
FIG. 11 is a block diagram illustrating an apparatus for information transfer between Internet of vehicles devices in accordance with an exemplary embodiment;
FIG. 12 is a schematic diagram of a vehicle networking device, according to an exemplary embodiment.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.
It is to be understood that reference herein to "a number" means one or more and "a plurality" means two or more. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.
Vehicle networking communications are also known as V2x (vehicle to vehicle) communications, which include V2V (vehicle to vehicle) communications technology, V2I (vehicle to Infrastructure) communications technology, and V2P (vehicle to vehicle) communications technology. Through the communication of V2V, V2I and V2P, the car networking technology can effectively promote traffic safety, improves traffic efficiency and richens people's trip experience.
The existing cellular communication technology is utilized to support the communication of the Internet of vehicles, the existing base station deployment can be effectively utilized, the equipment overhead is reduced, the Service with QoS (Quality of Service) guarantee is provided, and the requirement of the Internet of vehicles Service is met. Therefore, support for vehicle networking V2x communication by cellular networks, namely C-V2x (cellular based V2x, cellular network based V2x), is provided in Rel-14/15 of LTE (Long Term Evolution) technology. In the C-V2x technology, communication between the vehicle-mounted device and other devices can be relayed through the base station and the core network, that is, communication (uplink/downlink communication) is performed by using a communication link between the terminal device and the base station in the original cellular network; in another possible manner, the vehicle-mounted device and the other device may also communicate directly through a direct link between the devices, for example, through a sidelink (sidelink). Compared with the uplink/downlink communication, sidelink communication has the characteristics of short time delay, low overhead and the like, and is very suitable for direct communication between vehicle-mounted equipment and other peripheral equipment with close geographic positions.
The V2x sidelink communication in LTE can support some Basic security applications, such as BSM (Basic security Message) such as exchange CAM (Cooperative Awareness Messages) or DENM (centralized Environmental Notification Message), performing voice broadcast communication, and the like. With the recent development of technologies such as autopilot, new requirements are put on the performance of the V2x technology in order to support new V2x services. The use of 5G NR (New Radio) technology to support New V2x communication services and scenarios has been planned by 3GPP as an important element of Rel 16. The 3GPP working group has established some new service requirements that V2x communication needs to meet, including fleet management (Vehicles planning), awareness extensions (Extended Sensors), Advanced Driving (Advanced Driving), and Remote Driving (Remote Driving). Overall, NR V2x sidelink is required to provide higher communication rates, shorter communication delays, and more reliable communication quality.
Generally, the inter-device communication performed by the V2x device through sidelink may use a vehicle-mounted GNSS (Global Navigation Satellite System), such as GPS or beidou, or a synchronization signal broadcast by a base station as a synchronization reference signal of the device, so as to ensure synchronization between the transmitting end and the receiving end. However, in view of the wide application scenario of V2X internet of vehicles, even when the V2x device is out of coverage of the cellular network base station and cannot reliably receive GNSS signals (e.g., mountainous area, desert road), the V2x device needs to be able to reliably communicate with each other through the Sidelink. Therefore, synchronization over the Sidelink direct link is supported in LTE V2x, that is, one V2x device may complete synchronization between V2x devices by receiving synchronization signals broadcast by other V2x devices. In LTE V2x, the system message Broadcast of V2x is performed simultaneously by PSBCH (Physical Sidelink Broadcast Channel) and a synchronization signal. The broadcast content contains some synchronization and system configuration related information.
Considering the support of V2X for sildelink, the following synchronization scenario needs to be supported: i.e. when the V2X UE1 loses coverage or is not covered, to synchronize with surrounding UEs (cars), i.e. to support sidelink synchronization.
In the related art, in the synchronization architecture of the 5G NR, a synchronization broadcast block architecture is as shown in fig. 1 on the basis of a synchronization broadcast block. In fig. 1, the synchronous broadcast block of 5G NR occupies at least 4 OFDM symbols in the time domain.
The 3GPP has conducted a research on NR V2X in R16, and since the Sidelink of V2X is mainly opportunistic localized communication between devices, it only needs to ensure that devices in the communication range have the same synchronization and frame structure understanding through broadcasting, so its system broadcast information is relatively less than that of 5G NR. Therefore, if the transmission method of the synchronous broadcast block of 5G NR is directly used in NR V2X, the synchronous broadcast block occupies too much resource and is redundant, which results in waste of communication resources of NR V2X and affects communication efficiency of NR V2X.
Fig. 2 is a schematic diagram of an implementation environment related to an information transmission method between devices in a vehicle networking system according to some exemplary embodiments, and as shown in fig. 1, the implementation environment may include: a number of internet of vehicles devices 210.
The internet of vehicles device 210 is a wireless communication device that supports V2x technology. For example, the car networking device 110 may support cellular mobile communication technology, such as the 4th generation mobile communication (4G) technology or 5G technology. Alternatively, the vehicle networking device 110 may also support the next generation mobile communication technology of 5G technology.
For example, the vehicle networking device 210 may be a vehicle communication device, such as a vehicle computer with a wireless communication function, or a wireless communication device externally connected to the vehicle computer.
Alternatively, the vehicle networking device 210 may be a roadside device, such as a street lamp, a signal lamp or other roadside device with wireless communication function.
Alternatively, the vehicle networking device 210 may also be a user terminal device such as a mobile telephone (or "cellular" telephone) and a computer having a mobile terminal, such as a portable, pocket, hand-held, computer-included, or vehicle-mounted mobile device. For example, a Station (STA), a subscriber unit (subscriber unit), a subscriber Station (subscriber Station), a mobile Station (mobile), a remote Station (remote Station), an access point (ap), a remote terminal (remote terminal), an access terminal (access terminal), a user equipment (user terminal), a user agent (user agent), a user equipment (user device), or a user terminal (UE). Specifically, for example, the car networking device 110 may be a mobile terminal such as a smart phone, a tablet computer, an e-book reader, or may be an intelligent wearable device such as smart glasses, a smart watch, or a smart band.
Fig. 3 is a flowchart illustrating a method for transmitting information between vehicle networking devices, according to an exemplary embodiment, and as shown in fig. 3, the method for transmitting information between vehicle networking devices is applied in the implementation environment shown in fig. 2, and may include the following steps.
In step 301, a first car networking device transmits a wireless signal including a synchronization broadcast block, where the synchronization broadcast block is used to carry a synchronization signal and a physical broadcast channel, and the synchronization broadcast block is located on 3 consecutive orthogonal frequency division multiplexing OFDM symbols in a time domain; the second vehicle networking device receives the wireless signal.
In step 302, the second vehicle networking device detects the synchronized broadcast block in the wireless signal.
In step 303, the second car networking device obtains the information carried by the synchronized broadcast block according to the detection result.
In the 5G new air interface System, System Information is transmitted in a hierarchical manner, that is, a transmitting end first transmits a PBCH (Physical Broadcast Channel) including an MIB (master Information Block), and then transmits a PBCH including SIB (System Information Block) 1 and RMSI (Remaining minimum System Information) and including other SIBs and OSI (Open System Interconnection) Information in a hierarchical manner, wherein the PBCH includes Information necessary for RMSI resolution, and the RMSI and OSI include access Information and other necessary System Information. Therefore, the SSB (Synchronous signal/PBCH block) in the 5G new air interface system occupies more time-Frequency resources, generally needs to occupy 4 or more than 4 OFDM (Orthogonal Frequency Division Multiplexing) symbols, and the required bandwidth in the time-Frequency domain is also higher.
In the solution provided in the embodiment of the present application, in the vehicle networking communication (V2x), the sending end (i.e., the first vehicle networking device) carries the synchronized broadcast block in 3 OFDM symbols for broadcast sending, so that the time-frequency resource occupation of the synchronized broadcast block in the V2X scene is greatly reduced.
In summary, in the scheme shown in the embodiment of the present disclosure, the first car networking device broadcasts the synchronous broadcast block including the synchronous signal and the physical broadcast channel to the outside through 3 OFDM symbols, so that the second car networking device obtains information carried by the synchronous broadcast block according to a detection result of the synchronous broadcast block, resource occupation of the synchronous broadcast block in a time domain is reduced, and transmission efficiency of the synchronous broadcast block is improved.
Fig. 4 is a flow chart illustrating a method of information transfer between internet of vehicles devices according to an exemplary embodiment, which may be performed by a second internet of vehicles device in the embodiment shown in fig. 3, which may include the following steps.
In step 401, a wireless signal transmitted by a first vehicle networking device is received.
In step 402, a synchronization broadcast block is detected in the received wireless signal, the synchronization broadcast block is used to carry a synchronization signal and a physical broadcast channel, and the synchronization broadcast block occupies 3 consecutive orthogonal frequency division multiplexing, OFDM, symbols in the time domain.
In step 403, the information carried by the synchronized broadcast block is obtained according to the detection result.
Optionally, the synchronization signal includes a primary synchronization signal and a secondary synchronization signal;
the primary synchronization signal is located in the first OFDM symbol and the secondary synchronization signal is located in the second OFDM symbol.
Alternatively to this, the first and second parts may,
the physical broadcast channel is positioned in a third OFDM symbol;
alternatively, the first and second electrodes may be,
the physical broadcast channel is located in the third OFDM symbol and at least one of the first OFDM symbol and the second OFDM symbol.
Optionally, the number of resource blocks occupied by the physical broadcast channel in the frequency domain is greater than the number of resource blocks occupied by the primary synchronization signal or the secondary synchronization signal in the frequency domain.
Optionally, the subcarrier spacing of the wireless signal is a subcarrier spacing determined according to a frequency band in which the wireless signal is located; the subcarrier spacing is 15kHz, 30kHz or 60 kHz.
Optionally, a part of resource blocks occupied by the physical broadcast channel is used to carry the demodulation reference signal.
Optionally, a part of signals in the demodulation reference signal includes index information of the synchronized broadcast block;
or, all the signals in the demodulation reference signal contain the index information of the synchronous broadcast block;
alternatively, the demodulation reference signal does not contain index information of the synchronization broadcast block.
Optionally, the frequency band corresponding to the index information of the synchronized broadcast block is all or part of the at least one designated frequency band.
Optionally, the period of the synchronized broadcast block is all or part of at least one specified period.
In summary, in the scheme shown in the embodiment of the present disclosure, the first car networking device broadcasts the synchronous broadcast block including the synchronous signal and the physical broadcast channel to the outside through 3 OFDM symbols, so that the second car networking device obtains information carried by the synchronous broadcast block according to a detection result of the synchronous broadcast block, resource occupation of the synchronous broadcast block in a time domain is reduced, and transmission efficiency of the synchronous broadcast block is improved.
Fig. 5 is a flowchart illustrating a method of information transfer between internet of vehicle devices, which may be performed by the first internet of vehicle device in the embodiment shown in fig. 3, according to an exemplary embodiment, which may include the following steps.
In step 501, information carried by a synchronization broadcast block is generated, where the synchronization broadcast block is used to carry a synchronization signal and a physical broadcast channel, and the synchronization broadcast block is located in 3 consecutive OFDM symbols in the time domain.
In step 502, a wireless signal containing the synchronized broadcast block is sent according to the information carried by the synchronized broadcast block, so that the second vehicle networking device detects the synchronized broadcast block in the wireless signal, and acquires the information carried by the synchronized broadcast block according to the detection result.
In summary, in the scheme shown in the embodiment of the present disclosure, the first car networking device broadcasts the synchronous broadcast block including the synchronous signal and the physical broadcast channel to the outside through 3 OFDM symbols, so that the second car networking device obtains information carried by the synchronous broadcast block according to a detection result of the synchronous broadcast block, resource occupation of the synchronous broadcast block in a time domain is reduced, and transmission efficiency of the synchronous broadcast block is improved.
Fig. 6 is a flowchart illustrating a method for transmitting information between vehicle networking devices, according to an exemplary embodiment, and as shown in fig. 6, the method for transmitting information between vehicle networking devices is applied in the implementation environment shown in fig. 2, and may include the following steps.
In step 601, the first car networking device generates information carried by a synchronization broadcast block, where the synchronization broadcast block is used to carry a synchronization signal and a physical broadcast channel, and the synchronization broadcast block is located on 3 consecutive orthogonal frequency division multiplexing OFDM symbols in a time domain.
The first vehicle networking device may transmit the synchronized broadcast block over a secondary link (Sidelink).
In the embodiment of the present application, the physical broadcast channel of V2X may be transmitted in a single-stage-based, multi-stage optional manner, that is, the system only defines one basic physical broadcast channel in the sidelink, where the basic physical broadcast channel may also be referred to as PSBCH, and the basic physical broadcast channel contains basic system information required for V2X communication. Whether other system information exists besides the basic physical broadcast channel or not can be indicated by an extension indication in the physical broadcast channel. Optionally, when there is other system information besides the basic physical broadcast channel, the physical broadcast channel may also carry extension configuration information, and the extension configuration information may be used to indicate a resource location of the other system information.
Alternatively, the Synchronization Signal may include a PSS (Primary Synchronization Signal) and an SSS (Secondary Synchronization Signal).
The primary synchronization signal and the secondary synchronization signal may be different OFDM symbols, respectively. For example, assuming that 3 consecutive orthogonal frequency division multiplexing OFDM symbols in which the synchronization broadcast block is located are a first OFDM symbol, a second OFDM symbol, and a third OFDM symbol, the primary synchronization signal may be located in the first OFDM symbol, and the secondary synchronization signal may be located in the second OFDM symbol.
Optionally, the physical broadcast channel may be located in a third OFDM symbol other than the OFDM symbols in which the primary synchronization signal and the secondary synchronization signal are located.
For example, please refer to fig. 7, which shows a schematic structural diagram of a synchronized broadcast block according to an embodiment of the present application. As shown in fig. 7, an abscissa is a time domain resource, an ordinate is a frequency domain resource, and in fig. 7, one synchronization broadcast block occupies 3 OFDM symbols in a time domain, where a first OFDM symbol of the 3 OFDM symbols carries a primary synchronization signal PSS, a middle OFDM symbol carries a physical broadcast channel, and a last OFDM symbol carries a secondary synchronization signal SSS.
Optionally, the number of resource blocks occupied by the physical broadcast channel in the frequency domain is greater than the number of resource blocks occupied by the primary synchronization signal or the secondary synchronization signal in the frequency domain.
In practical applications, the physical broadcast channel is used to carry system information, and the data volume of the system information is usually larger than that of the synchronization signal (whether the primary synchronization signal or the secondary synchronization signal), so the number of resource blocks occupied by the physical broadcast channel is also larger.
For example, please refer to fig. 8, which shows a schematic structural diagram of another synchronous broadcast block according to an embodiment of the present application. As shown in fig. 8, the abscissa is time domain resources, the ordinate is frequency domain resources, and in fig. 8, one synchronization broadcast block occupies 3 OFDM symbols in the time domain, where a first OFDM symbol of the 3 OFDM symbols carries a primary synchronization signal PSS, a middle OFDM symbol carries a physical broadcast channel, and a last OFDM symbol carries a secondary synchronization signal SSS. The number of resource blocks occupied by the physical broadcast channel in the frequency domain is greater than the number of resource blocks occupied by the left and right synchronization signals in the frequency domain, and the height of the physical broadcast channel is greater than the height of the primary synchronization signal or the secondary synchronization signal in fig. 8.
Optionally, the physical broadcast channel is located in the third OFDM symbol and at least one of the first OFDM symbol and the second OFDM symbol.
Since the number of resource blocks occupied by the physical broadcast channel in the frequency domain is greater than the number of resource blocks occupied by the synchronization signal in the frequency domain, when the number of resource blocks occupied by the physical broadcast channel is large, if the physical broadcast channel is only carried on one OFDM symbol, the bandwidth occupied by the synchronization broadcast block may be high, which wastes system bandwidth resources. Therefore, in the embodiment of the present application, the physical broadcast channel may be distributed in the third OFDM symbol and the OFDM symbol where the synchronization signal is located, so as to reduce the bandwidth resource occupation on the single OFDM symbol.
For example, please refer to fig. 9, which shows a schematic structural diagram of another synchronous broadcast block according to an embodiment of the present application. As shown in fig. 9, the abscissa is time domain resources, and the ordinate is frequency domain resources, in fig. 9, one synchronization broadcast block occupies 3 OFDM symbols in the time domain, where a first OFDM symbol of the 3 OFDM symbols carries a primary synchronization signal PSS, a middle OFDM symbol carries a physical broadcast channel, and a last OFDM symbol carries a secondary synchronization signal SSS. In addition, the last OFDM symbol carries a part of the physical broadcast channel in addition to the secondary synchronization signal SSS, which can reduce the bandwidth occupied by the physical broadcast channel in the frequency domain.
Optionally, a part of resource blocks occupied by the physical broadcast channel is used to carry the demodulation reference signal.
In this embodiment, a predetermined proportion of resource blocks occupied by the physical broadcast channel may be used to carry the demodulation reference signal, for example, 30% of resource blocks occupied by the physical broadcast channel are used to carry the demodulation reference signal.
Optionally, a part of the signal in the demodulation reference signal includes Index information (Index information) of the synchronized broadcast block; or, all the signals in the demodulation reference signal contain the index information of the synchronous broadcast block; alternatively, the demodulation reference signal does not contain index information of the synchronization broadcast block.
In this embodiment of the present application, the demodulation reference signal may carry index information of the synchronization broadcast block, specifically, a part of the demodulation reference signal may carry index information of the synchronization broadcast block, or all the demodulation reference signals may carry index information of the synchronization broadcast block. Alternatively, the demodulation reference signal may not carry index information of the synchronization broadcast block.
Optionally, the frequency band corresponding to the index information of the synchronized broadcast block is all or part of the at least one designated frequency band.
In this embodiment of the present application, the system may preset a small number of designated frequency bands as frequency bands corresponding to the index information of the synchronized broadcast block, for example, the system may preset 3 frequency bands as frequency bands corresponding to the index information of the synchronized broadcast block, so as to reduce the complexity of the system, simplify the system design, and improve the transmission efficiency. For example, the system may preset a frequency band with a frequency band number of n77 (frequency range of 3.3GHz to 4.2GHz), n79 (frequency range of 4.4GHz to 5.0 GHz), and three frequency bands of 5.9GHz newly supported by the 5G system as the above specified frequency bands.
In step 602, the first car networking device sends a wireless signal containing the synchronized broadcast block according to the information carried by the synchronized broadcast block, and the second car networking device receives the wireless signal sent by the first car networking device.
Optionally, the subcarrier spacing of the wireless signal is a subcarrier spacing determined according to a frequency band in which the wireless signal is located; the subcarrier spacing is 15kHz, 30kHz or 60 kHz.
In this embodiment of the application, when the vehicle networking device sends or receives a wireless signal, the subcarrier interval of the wireless signal may be determined according to a frequency band of the wireless signal, specifically, for example, a sub-carrier spacing (SCS) set is preset in the vehicle networking device, the SCS set includes three subcarrier intervals of 15kHz, 30kHz and 60kHz, each frequency band corresponds to one subcarrier interval in the SCS set, for example, an n77 frequency band corresponds to a subcarrier interval of 30kHz, and a 5.9GHz frequency band newly supported by a 5G system corresponds to a subcarrier interval of 60 kHz. Through the determination mode of the subcarrier spacing, the synchronous broadcast block not only supports the carrier spacing of 15kHz and 30kHz, but also supports the carrier spacing of 60kHz, so that the effective utilization of a high-frequency part (such as a 5.9GHz frequency band) in a 5G system is realized.
Optionally, the period of the synchronized broadcast block is all or part of at least one specified period.
In this embodiment of the application, the system may preset a small number of specified periods (for example, set 1 to 2 specified periods), and when the synchronized broadcast block is transmitted, the first vehicle networking device may select one specified period and transmit the synchronized broadcast block according to the selected specified period. For example, the above-mentioned specified periods may be 20ms and 50 ms.
It should be noted that: the above definitions regarding the designated frequency band and the designated period apply throughout the entire application.
In step 603, the second car networking device detects a synchronization broadcast block in the received wireless signal.
In step 604, the second car networking device obtains the information carried by the synchronized broadcast block according to the detection result.
In this embodiment of the application, the second car networking device may perform synchronization signal detection on the wireless signal to detect a synchronization signal in the synchronization broadcast block, complete synchronization with the second car networking device, and acquire system information carried in a physical broadcast channel in the synchronization broadcast block, so as to establish connection and communication with the second car networking device according to the system information.
In summary, in the scheme shown in the embodiment of the present disclosure, the first car networking device broadcasts the synchronous broadcast block including the synchronous signal and the physical broadcast channel to the outside through 3 OFDM symbols, so that the second car networking device obtains information carried by the synchronous broadcast block according to a detection result of the synchronous broadcast block, resource occupation of the synchronous broadcast block in a time domain is reduced, and transmission efficiency of the synchronous broadcast block is improved.
The following are embodiments of the disclosed apparatus that may be used to perform embodiments of the disclosed methods. For details not disclosed in the embodiments of the apparatus of the present disclosure, refer to the embodiments of the method of the present disclosure.
Fig. 10 is a block diagram illustrating an information transmission apparatus between internet of vehicles devices according to an exemplary embodiment, and as shown in fig. 10, the information transmission apparatus between internet of vehicles devices may be implemented as all or part of the internet of vehicles devices in the implementation environment shown in fig. 2 by hardware or by a combination of hardware and software to execute the steps executed by the second internet of vehicles device in any of the embodiments shown in fig. 3, 4 or 6. The information transmission device between the internet of vehicles equipment can comprise:
the signal receiving module 1001 is used for receiving a wireless signal sent by a first car networking device;
a detecting module 1002, configured to detect a synchronous broadcast block in the received wireless signal, where the synchronous broadcast block is used to carry a synchronous signal and a physical broadcast channel, and the synchronous broadcast block occupies 3 consecutive OFDM symbols in a time domain;
an information obtaining module 1003, configured to obtain information carried by the synchronous broadcast block according to the detection result.
Optionally, the synchronization signal includes a primary synchronization signal and a secondary synchronization signal;
the primary synchronization signal is located in a first OFDM symbol, and the secondary synchronization signal is located in a second OFDM symbol.
Optionally, the physical broadcast channel is located in a third OFDM symbol;
alternatively, the first and second electrodes may be,
the physical broadcast channel is located in a third OFDM symbol and at least one of the first OFDM symbol and the second OFDM symbol.
Optionally, the number of resource blocks occupied by the physical broadcast channel in the frequency domain is greater than the number of resource blocks occupied by the primary synchronization signal or the secondary synchronization signal in the frequency domain.
Optionally, the subcarrier spacing of the wireless signal is a subcarrier spacing determined according to a frequency band in which the wireless signal is located; the subcarrier spacing is 15kHz, 30kHz or 60 kHz.
Optionally, a part of resource blocks occupied by the physical broadcast channel are used to carry demodulation reference signals.
Optionally, a part of signals in the demodulation reference signal includes index information of the synchronous broadcast block;
or, all signals in the demodulation reference signal contain index information of the synchronous broadcast block;
or, the demodulation reference signal does not contain index information of the synchronization broadcast block.
Optionally, the frequency band corresponding to the index information of the synchronized broadcast block is all or part of at least one designated frequency band.
Optionally, the period of the synchronized broadcast block is all or part of at least one designated period.
In summary, in the scheme shown in the embodiment of the present disclosure, the first car networking device broadcasts the synchronous broadcast block including the synchronous signal and the physical broadcast channel to the outside through 3 OFDM symbols, so that the second car networking device obtains information carried by the synchronous broadcast block according to a detection result of the synchronous broadcast block, resource occupation of the synchronous broadcast block in a time domain is reduced, and transmission efficiency of the synchronous broadcast block is improved.
Fig. 11 is a block diagram illustrating an information transmission apparatus between internet of vehicles devices according to an exemplary embodiment, and as shown in fig. 11, the information transmission apparatus between internet of vehicles devices may be implemented as all or part of the internet of vehicles devices in the implementation environment shown in fig. 2 by hardware or by a combination of hardware and software to execute the steps executed by the first internet of vehicles device in any of the embodiments shown in fig. 3, 5 or 6. The information transmission device between the internet of vehicles equipment can comprise:
an information generating module 1101, configured to generate information carried by a synchronization broadcast block, where the synchronization broadcast block is used to carry a synchronization signal and a physical broadcast channel, and the synchronization broadcast block is located on 3 consecutive orthogonal frequency division multiplexing OFDM symbols in a time domain;
a signal sending module 1102, configured to send a wireless signal including the synchronized broadcast block according to the information carried by the synchronized broadcast block, so that the second car networking device detects the synchronized broadcast block in the wireless signal, and obtains the information carried by the synchronized broadcast block according to a detection result.
In summary, in the scheme shown in the embodiment of the present disclosure, the first car networking device broadcasts the synchronous broadcast block including the synchronous signal and the physical broadcast channel to the outside through 3 OFDM symbols, so that the second car networking device obtains information carried by the synchronous broadcast block according to a detection result of the synchronous broadcast block, resource occupation of the synchronous broadcast block in a time domain is reduced, and transmission efficiency of the synchronous broadcast block is improved.
An exemplary embodiment of the present disclosure also provides an information transmission system between internet of vehicles devices, the system including: the first car networking device and the second car networking device.
The first car networking device comprises an information transmission device between the car networking devices provided in the embodiment shown in the figure 11;
the second car networking device comprises an information transmission device between the car networking devices provided in the embodiment shown in the figure 10.
It should be noted that, when the apparatus provided in the foregoing embodiment implements the functions thereof, only the division of the above functional modules is illustrated, and in practical applications, the above functions may be distributed by different functional modules according to actual needs, that is, the content structure of the device is divided into different functional modules, so as to complete all or part of the functions described above.
With regard to the apparatus in the above-described embodiment, the specific manner in which each module performs the operation has been described in detail in the embodiment related to the method, and will not be elaborated here.
An exemplary embodiment of the present disclosure provides an information transmission apparatus between internet of vehicles, which can implement all or part of the steps performed by a second internet of vehicles in the above embodiments shown in fig. 3, fig. 4, or fig. 6 of the present disclosure, and the information transmission apparatus between internet of vehicles includes: a processor, a memory for storing processor-executable instructions;
wherein the processor is configured to:
receiving a wireless signal sent by first car networking equipment;
detecting a synchronous broadcast block in the received wireless signal, wherein the synchronous broadcast block is used for carrying a synchronous signal and a physical broadcast channel, and the synchronous broadcast block occupies 3 continuous Orthogonal Frequency Division Multiplexing (OFDM) symbols in a time domain;
and acquiring the information carried by the synchronous broadcast block according to the detection result.
Optionally, the synchronization signal includes a primary synchronization signal and a secondary synchronization signal;
the primary synchronization signal is located in a first OFDM symbol, and the secondary synchronization signal is located in a second OFDM symbol.
Optionally, the physical broadcast channel is located in a third OFDM symbol;
alternatively, the first and second electrodes may be,
the physical broadcast channel is located in a third OFDM symbol and at least one of the first OFDM symbol and the second OFDM symbol.
Optionally, the number of resource blocks occupied by the physical broadcast channel in the frequency domain is greater than the number of resource blocks occupied by the primary synchronization signal or the secondary synchronization signal in the frequency domain.
Optionally, the subcarrier spacing of the wireless signal is a subcarrier spacing determined according to a frequency band in which the wireless signal is located; the subcarrier spacing is 15kHz, 30kHz or 60 kHz.
Optionally, a part of resource blocks occupied by the physical broadcast channel are used to carry demodulation reference signals.
Optionally, a part of signals in the demodulation reference signal includes index information of the synchronous broadcast block;
or, all signals in the demodulation reference signal contain index information of the synchronous broadcast block;
or, the demodulation reference signal does not contain index information of the synchronization broadcast block.
Optionally, the frequency band corresponding to the index information of the synchronized broadcast block is all or part of at least one designated frequency band.
Optionally, the period of the synchronized broadcast block is all or part of at least one designated period.
An exemplary embodiment of the present disclosure provides an information transmission apparatus between internet of vehicles, which is capable of implementing all or part of the steps performed by a first internet of vehicles in the above embodiments shown in fig. 3, fig. 5 or fig. 6 of the present disclosure, and the information transmission apparatus between internet of vehicles includes: a processor, a memory for storing processor-executable instructions;
wherein the processor is configured to:
generating information carried by a synchronous broadcast block, wherein the synchronous broadcast block is used for carrying a synchronous signal and a physical broadcast channel, and the synchronous broadcast block is positioned on 3 continuous Orthogonal Frequency Division Multiplexing (OFDM) symbols on a time domain;
and sending a wireless signal containing the synchronous broadcast block according to the information carried by the synchronous broadcast block so that the second vehicle networking equipment can detect the synchronous broadcast block in the wireless signal and acquire the information carried by the synchronous broadcast block according to the detection result.
The above mainly takes car networking equipment as an example, and introduces the scheme provided by the embodiment of the disclosure. It is understood that the car networking device comprises corresponding hardware structures and/or software modules for performing the respective functions in order to realize the functions. The disclosed embodiments can be implemented in hardware or a combination of hardware and computer software, in conjunction with the exemplary modules and algorithm steps described in connection with the embodiments disclosed in the disclosure. Whether a function is performed as hardware or computer software drives hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present disclosure.
FIG. 12 is a schematic diagram of a vehicle networking device, according to an exemplary embodiment.
The vehicle networking device 1200 includes a communication unit 1204 and a processor 1202. The processor 1202 may also be a controller, referred to in FIG. 12 as "controller/processor 1202". The communication unit 1204 is used to support the vehicle networking equipment to communicate with other network entities, such as other vehicle networking equipment and the like.
Further, the vehicle networking device 1200 may further comprise a memory 1203, the memory 1203 being used for storing program codes and data of the vehicle networking device 1200.
It is to be understood that fig. 12 shows only a simplified design of a vehicle networking device 1200. In practical applications, the car networking device 1200 may contain any number of processors, controllers, memories, communication units, etc., and all car networking devices that can implement the embodiments of the present disclosure are within the scope of the embodiments of the present disclosure.
Those skilled in the art will recognize that, in one or more of the examples described above, the functions described in embodiments of the disclosure may be implemented in hardware, software, firmware, or any combination thereof. When implemented in software, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A storage media may be any available media that can be accessed by a general purpose or special purpose computer.
The embodiment of the present disclosure further provides a computer storage medium, configured to store computer software instructions for the first vehicle networking device or the second vehicle networking device, where the computer software instructions include a program designed to execute the information transmission method between the vehicle networking devices.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.
Claims (24)
1. A method for information transmission between Internet of vehicles devices, the method comprising:
the method comprises the steps that a first car networking device sends a wireless signal containing a synchronous broadcast block, wherein the synchronous broadcast block is used for bearing a synchronous signal and a physical broadcast channel, and the synchronous broadcast block is located on 3 continuous Orthogonal Frequency Division Multiplexing (OFDM) symbols in a time domain; the synchronization signals comprise a primary synchronization signal and a secondary synchronization signal; the primary synchronization signal is located in a first OFDM symbol, and the secondary synchronization signal is located in a second OFDM symbol;
the second vehicle networking device receives the wireless signal;
the second vehicle networking device detecting the synchronized broadcast block in the wireless signal;
and the second vehicle networking equipment acquires the information carried by the synchronous broadcast block according to the detection result.
2. A method of information transfer between Internet of vehicles devices, the method performed by a second Internet of vehicles device, the method comprising:
receiving a wireless signal sent by first car networking equipment;
detecting a synchronous broadcast block in the received wireless signal, wherein the synchronous broadcast block is used for carrying a synchronous signal and a physical broadcast channel, and the synchronous broadcast block occupies 3 continuous Orthogonal Frequency Division Multiplexing (OFDM) symbols in a time domain; the synchronization signals comprise a primary synchronization signal and a secondary synchronization signal; the primary synchronization signal is located in a first OFDM symbol, and the secondary synchronization signal is located in a second OFDM symbol;
and acquiring the information carried by the synchronous broadcast block according to the detection result.
3. The method of claim 2,
the physical broadcast channel is located in a third OFDM symbol;
alternatively, the first and second electrodes may be,
the physical broadcast channel is located in a third OFDM symbol and at least one of the first OFDM symbol and the second OFDM symbol.
4. The method of claim 2, wherein the number of resource blocks occupied by the physical broadcast channel in the frequency domain is greater than the number of resource blocks occupied by the primary synchronization signal or the secondary synchronization signal in the frequency domain.
5. The method of claim 2, wherein the subcarrier spacing of the wireless signal is a subcarrier spacing determined according to a frequency band in which the wireless signal is located; the subcarrier spacing is 15kHz, 30kHz or 60 kHz.
6. The method of claim 2, wherein a part of resource blocks occupied by the physical broadcast channel are used for carrying demodulation reference signals.
7. The method of claim 6,
a part of signals in the demodulation reference signal contain index information of the synchronous broadcast block;
or, all signals in the demodulation reference signal contain index information of the synchronous broadcast block;
or, the demodulation reference signal does not contain index information of the synchronization broadcast block.
8. The method of claim 7,
and the frequency band corresponding to the index information of the synchronous broadcast block is all or part of at least one appointed frequency band.
9. The method of claim 2,
the period of the synchronous broadcast block is all or part of at least one specified period.
10. A method of information transfer between internet of vehicle devices, the method performed by a first internet of vehicle device, the method comprising:
generating information carried by a synchronous broadcast block, wherein the synchronous broadcast block is used for carrying a synchronous signal and a physical broadcast channel, and the synchronous broadcast block is positioned on 3 continuous Orthogonal Frequency Division Multiplexing (OFDM) symbols on a time domain; the synchronization signals comprise a primary synchronization signal and a secondary synchronization signal; the primary synchronization signal is located in a first OFDM symbol, and the secondary synchronization signal is located in a second OFDM symbol;
and sending a wireless signal containing the synchronous broadcast block according to the information carried by the synchronous broadcast block so that the second vehicle networking equipment can detect the synchronous broadcast block in the wireless signal and acquire the information carried by the synchronous broadcast block according to the detection result.
11. An information transmission device between internet of vehicles equipment, which is used in a second internet of vehicles equipment, the device comprising:
the signal receiving module is used for receiving a wireless signal sent by the first car networking device;
a detection module, configured to detect a synchronous broadcast block in the received wireless signal, where the synchronous broadcast block is used to carry a synchronous signal and a physical broadcast channel, and the synchronous broadcast block occupies 3 consecutive OFDM symbols in a time domain; the synchronization signals comprise a primary synchronization signal and a secondary synchronization signal; the primary synchronization signal is located in a first OFDM symbol, and the secondary synchronization signal is located in a second OFDM symbol;
and the information acquisition module is used for acquiring the information carried by the synchronous broadcast block according to the detection result.
12. The apparatus of claim 11,
the physical broadcast channel is located in a third OFDM symbol;
alternatively, the first and second electrodes may be,
the physical broadcast channel is located in a third OFDM symbol and at least one of the first OFDM symbol and the second OFDM symbol.
13. The apparatus of claim 11, wherein the number of resource blocks occupied by the physical broadcast channel in a frequency domain is greater than the number of resource blocks occupied by the primary synchronization signal or the secondary synchronization signal in the frequency domain.
14. The apparatus of claim 11, wherein the subcarrier spacing of the wireless signal is a subcarrier spacing determined according to a frequency band in which the wireless signal is located; the subcarrier spacing is 15kHz, 30kHz or 60 kHz.
15. The apparatus of claim 11, wherein a portion of resource blocks occupied by the physical broadcast channel are used for carrying demodulation reference signals.
16. The apparatus of claim 15,
a part of signals in the demodulation reference signal contain index information of the synchronous broadcast block;
or, all signals in the demodulation reference signal contain index information of the synchronous broadcast block;
or, the demodulation reference signal does not contain index information of the synchronization broadcast block.
17. The apparatus of claim 16,
and the frequency band corresponding to the index information of the synchronous broadcast block is all or part of at least one appointed frequency band.
18. The apparatus of claim 11,
the period of the synchronous broadcast block is all or part of at least one specified period.
19. An apparatus for transmitting information between internet of vehicles, the apparatus being used in a first internet of vehicles, the apparatus comprising:
an information generating module, configured to generate information carried by a synchronous broadcast block, where the synchronous broadcast block is used to carry a synchronization signal and a physical broadcast channel, and the synchronous broadcast block is located on 3 consecutive orthogonal frequency division multiplexing OFDM symbols in a time domain; the synchronization signals comprise a primary synchronization signal and a secondary synchronization signal; the primary synchronization signal is located in a first OFDM symbol, and the secondary synchronization signal is located in a second OFDM symbol;
and the signal sending module is used for sending a wireless signal containing the synchronous broadcast block according to the information carried by the synchronous broadcast block so that the second vehicle networking equipment can detect the synchronous broadcast block in the wireless signal and acquire the information carried by the synchronous broadcast block according to the detection result.
20. An information transfer system between internet of vehicles devices, the system comprising: the first car networking device and the second car networking device;
the first vehicle networking device comprises an information transmission device between the vehicle networking devices as claimed in claim 19;
the second vehicle networking device comprises an information transmission device between the vehicle networking devices according to any one of claims 11 to 18.
21. An information transmission device between car networking equipment, which is used in a second car networking equipment, the device comprising:
a processor;
a memory for storing executable instructions of the processor;
wherein the processor is configured to:
receiving a wireless signal sent by first car networking equipment;
detecting a synchronous broadcast block in the received wireless signal, wherein the synchronous broadcast block is used for carrying a synchronous signal and a physical broadcast channel, and the synchronous broadcast block occupies 3 continuous Orthogonal Frequency Division Multiplexing (OFDM) symbols in a time domain; the synchronization signals comprise a primary synchronization signal and a secondary synchronization signal; the primary synchronization signal is located in a first OFDM symbol, and the secondary synchronization signal is located in a second OFDM symbol;
and acquiring the information carried by the synchronous broadcast block according to the detection result.
22. An information transmission device between internet of vehicles, which is used in a first internet of vehicles, the device comprising:
a processor;
a memory for storing executable instructions of the processor;
wherein the processor is configured to:
generating information carried by a synchronous broadcast block, wherein the synchronous broadcast block is used for carrying a synchronous signal and a physical broadcast channel, and the synchronous broadcast block is positioned on 3 continuous Orthogonal Frequency Division Multiplexing (OFDM) symbols on a time domain; the synchronization signals comprise a primary synchronization signal and a secondary synchronization signal; the primary synchronization signal is located in a first OFDM symbol, and the secondary synchronization signal is located in a second OFDM symbol;
and sending a wireless signal containing the synchronous broadcast block according to the information carried by the synchronous broadcast block so that the second vehicle networking equipment can detect the synchronous broadcast block in the wireless signal and acquire the information carried by the synchronous broadcast block according to the detection result.
23. A computer-readable storage medium containing executable instructions that are invoked by a processor in a second vehicle networking device to implement the method for information transfer between vehicle networking devices of any of claims 2 to 9.
24. A computer-readable storage medium containing executable instructions that are invoked by a processor in a first vehicle networking device to implement the method for information transfer between vehicle networking devices of claim 10.
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111796260B (en) * | 2019-08-12 | 2023-09-12 | 维沃移动通信有限公司 | Distance measurement method and equipment |
| WO2021087822A1 (en) * | 2019-11-06 | 2021-05-14 | Oppo广东移动通信有限公司 | System information receiving method, sending method, apparatus, terminal, and storage medium |
| CN113939035A (en) * | 2020-06-29 | 2022-01-14 | 上海朗帛通信技术有限公司 | Method and device used in wireless communication node |
| CN114095520B (en) * | 2020-07-21 | 2024-01-19 | 中信科智联科技有限公司 | Positioning data determining method, internet of vehicles equipment and device |
| EP4191921A4 (en) * | 2020-07-29 | 2023-09-06 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Wireless communication method and apparatus, wireless communication system, and device and terminal |
| CN112600711B (en) * | 2020-12-21 | 2023-03-14 | 上海星融汽车科技有限公司 | Real vehicle bus data remote cloning system and method |
| CN116233762B (en) * | 2021-12-02 | 2024-03-29 | 中国联合网络通信集团有限公司 | Inter-vehicle communication method, device, vehicle and storage medium |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1878158A (en) * | 2006-06-29 | 2006-12-13 | 上海交通大学 | Cell recognition method for OFDMA cellular system |
| CN106792574A (en) * | 2015-11-19 | 2017-05-31 | 普天信息技术有限公司 | A kind of cluster direct communication method based on terminal-to-terminal service |
| WO2017117811A1 (en) * | 2016-01-08 | 2017-07-13 | 华为技术有限公司 | Signal transmission method and terminal device |
| CN106961735A (en) * | 2016-01-11 | 2017-07-18 | 中兴通讯股份有限公司 | The application method and device of resource |
| CN107734557A (en) * | 2016-08-11 | 2018-02-23 | 北京三星通信技术研究有限公司 | The method and apparatus to cellular communication interference is avoided in a kind of V2X communications |
| CN107846434A (en) * | 2016-09-19 | 2018-03-27 | 中兴通讯股份有限公司 | A kind of car networking method for processing business, device and car networking system |
| EP3190731A4 (en) * | 2014-09-02 | 2018-05-02 | LG Electronics Inc. | Synchronization signal transmission method and apparatus for device-to-device terminal in wireless communication system |
| CN108092930A (en) * | 2016-11-17 | 2018-05-29 | 华为技术有限公司 | The method and terminal device of a kind of communication |
| CN108141340A (en) * | 2015-10-01 | 2018-06-08 | Lg 电子株式会社 | The method and terminal of reference signal are sent in D2D communications |
| CN108307496A (en) * | 2017-01-13 | 2018-07-20 | 维沃移动通信有限公司 | Sending method, method of reseptance, relevant device and the system of synchronous access signal group |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102111208B (en) * | 2009-12-25 | 2014-07-16 | 中兴通讯股份有限公司 | System and method for receiving system information for first class relay station |
| US9143984B2 (en) * | 2012-04-13 | 2015-09-22 | Intel Corporation | Mapping of enhanced physical downlink control channels in a wireless communication network |
| US10341977B2 (en) * | 2014-09-19 | 2019-07-02 | Lg Electronics Inc. | Method for obtaining downlink synchronization, and MTC apparatus |
| CN105282257B (en) * | 2015-11-05 | 2019-06-11 | 东莞酷派软件技术有限公司 | For the data transmission method and device of vehicle communication, terminal and roadside unit |
| CN112073167B (en) * | 2017-01-06 | 2023-09-08 | 展讯通信（上海）有限公司 | Transmission method, receiving method, base station and user equipment of synchronous signal block |
| US10425264B2 (en) * | 2017-01-09 | 2019-09-24 | Lg Electronics Inc. | Method of transmitting synchronization signal and apparatus therefor |
| CN107682133B (en) * | 2017-09-20 | 2020-08-14 | 宇龙计算机通信科技(深圳)有限公司 | Method and device for generating discovery reference signal and network side equipment |
-
2018
- 2018-07-27 WO PCT/CN2018/097423 patent/WO2020019297A1/en active Application Filing
- 2018-07-27 CN CN201880000901.7A patent/CN109565647B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1878158A (en) * | 2006-06-29 | 2006-12-13 | 上海交通大学 | Cell recognition method for OFDMA cellular system |
| EP3190731A4 (en) * | 2014-09-02 | 2018-05-02 | LG Electronics Inc. | Synchronization signal transmission method and apparatus for device-to-device terminal in wireless communication system |
| CN108141340A (en) * | 2015-10-01 | 2018-06-08 | Lg 电子株式会社 | The method and terminal of reference signal are sent in D2D communications |
| CN106792574A (en) * | 2015-11-19 | 2017-05-31 | 普天信息技术有限公司 | A kind of cluster direct communication method based on terminal-to-terminal service |
| WO2017117811A1 (en) * | 2016-01-08 | 2017-07-13 | 华为技术有限公司 | Signal transmission method and terminal device |
| CN106961735A (en) * | 2016-01-11 | 2017-07-18 | 中兴通讯股份有限公司 | The application method and device of resource |
| CN107734557A (en) * | 2016-08-11 | 2018-02-23 | 北京三星通信技术研究有限公司 | The method and apparatus to cellular communication interference is avoided in a kind of V2X communications |
| CN107846434A (en) * | 2016-09-19 | 2018-03-27 | 中兴通讯股份有限公司 | A kind of car networking method for processing business, device and car networking system |
| CN108092930A (en) * | 2016-11-17 | 2018-05-29 | 华为技术有限公司 | The method and terminal device of a kind of communication |
| CN108307496A (en) * | 2017-01-13 | 2018-07-20 | 维沃移动通信有限公司 | Sending method, method of reseptance, relevant device and the system of synchronous access signal group |
Non-Patent Citations (2)
| Title |
|---|
| Release 15 Description;Summary of Rel-15 Work Items(Release 15);3GPP;《3GPP TR 21.915 V0.2.0 (2018-07)》;20180713;全文 * |
| WI Summary of New Radio Access Technology;NTT DOCOMO, INC.;《3GPP TSG RAN Meeting #80 RP-181378》;20180614;全文 * |
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| WO2020019297A1 (en) | 2020-01-30 |
| CN109565647A (en) | 2019-04-02 |
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