CN110139241B

CN110139241B - Synchronization method, terminal and network equipment

Info

Publication number: CN110139241B
Application number: CN201810136892.6A
Authority: CN
Inventors: 李晨鑫; 彭莹; 赵锐; 赵丽
Original assignee: Datang Mobile Communications Equipment Co Ltd
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2018-02-09
Filing date: 2018-02-09
Publication date: 2022-04-08
Anticipated expiration: 2038-02-09
Also published as: CN110139241A; WO2019153826A1

Abstract

The invention provides a synchronization method, a terminal and network equipment, which solve the synchronization problem when the existing LTE V2X UE and NR V2X UE work together. The synchronization method of the invention comprises the following steps: and sending and/or receiving the synchronization message according to the synchronization configuration information. According to the embodiment of the invention, the synchronization message is sent and/or received according to the synchronization configuration information, so that the synchronization can be realized when the LTE V2X UE and the NR V2X UE work together, and the normal work of the LTE V2X UE can be ensured.

Description

Synchronization method, terminal and network equipment

Technical Field

The present invention relates to the field of wireless technologies, and in particular, to a synchronization method, a terminal, and a network device.

Background

In a protocol of Vehicle to X (V2X for short) of 3GPP Release 14, a ue (user equipment) only supports single carrier transmission, and a maximum traffic payload that can support transmission on each time domain resource is 31704bit, that is, 3963 byte. In contrast, 3GPP Release 15 studies to improve the peak rate of data transmission by carrier aggregation, and supports 8 carriers at most, but it is still difficult to significantly improve the data transmission rate under the condition of limited frequency domain resource bandwidth. Therefore, it is intended to increase the data transmission rate by using the frequency domain resources of the higher frequency band and obtaining the larger bandwidth, for example, the 30GHz band and the 63-64GHz band.

However, after the bandwidth of the frequency domain resource is expanded, different UEs may support different bandwidths due to different sending and receiving capabilities, and meanwhile, due to different delay requirements for sending services, when a service (such as a service with a 3ms delay or a service with a delay as low as 1 ms) is sent, flexible Numerology configuration (that is, different time domain resource granularities and frequency domain resource subcarrier interval configurations are supported, and a multiplication result of the two is equal to a frequency domain resource subcarrier interval of 15KHz at a time domain resource granularity of 1 ms) is adopted in a New air interface technology (NR, New RAT).

On the other hand, currently, V2X UE can support three synchronization modes, namely Global Navigation Satellite System (GNSS) synchronization, eNB synchronization, and synchronization through synchronization messages sent by other UEs. The NR V2X UE supporting the new air interface technology needs to be able to support GNSS synchronization, eNB/gNB synchronization, and synchronization through synchronization messages sent by other UEs.

After NR is generally deployed, an existing eNB may be gradually upgraded and replaced, so that existing lte (long Term evolution) V2X UEs have no eNB to synchronize, and meanwhile, due to different technologies and incapability of synchronizing with a gNB, synchronization can be performed only by receiving a synchronization message sent by NR V2X UEs when GNSS is not supported. As described above, the NR V2X UE can support multiple Numerology configurations, and if synchronization problem cannot be guaranteed when the LTE V2X UE and the NR V2X UE operate together, the LTE V2X UE cannot operate normally, and more complex interference is caused to the NR V2X UE sharing the resource pool.

Disclosure of Invention

The invention aims to provide a synchronization method, a terminal and network equipment, which are used for solving the synchronization problem when the existing LTE V2X UE and NR V2X UE work together.

In order to achieve the above object, the present invention provides a synchronization method applied to a terminal for vehicle-to-anything V2X communication, including:

and sending and/or receiving the synchronization message according to the synchronization configuration information.

The synchronization configuration information is configured by a network side or acquired through pre-configuration.

Wherein, in the step of sending the synchronization message according to the synchronization configuration information, the synchronization configuration information includes at least one of the following:

whether to transmit a synchronization message, a frequency band used for transmission of the synchronization message, and a baseband parameter Numerology used for transmission of the synchronization message.

When the synchronization configuration information includes a frequency band used for sending the synchronization message and a baseband parameter Numerology used for sending the synchronization message, wherein the frequency band used for sending the synchronization message is a first frequency band, and the baseband parameter Numerology used for sending the synchronization message is a fixed parameter; the frequency of the first frequency band is smaller than a preset value.

When the synchronization configuration information includes a frequency band used for sending the synchronization message and a baseband parameter Numerology used for sending the synchronization message, wherein the frequency band used for sending the synchronization message is a first frequency band, and the baseband parameter Numerology used for sending the synchronization message is a designated configuration parameter; the frequency of the first frequency band is smaller than a preset value.

When the synchronization configuration information comprises a frequency band adopted by sending the synchronization message and a baseband parameter Numerology adopted by sending the synchronization message, the frequency band adopted by sending the synchronization message is a second frequency band, and the baseband parameter Numerology adopted by sending the synchronization message is a fixed parameter; and the frequency of the second frequency band is more than or equal to a preset value.

When the synchronization configuration information includes a frequency band used for sending the synchronization message and a baseband parameter Numerology used for sending the synchronization message, the frequency band used for sending the synchronization message is a second frequency band, and the baseband parameter Numerology used for sending the synchronization message is a designated configuration parameter.

Wherein, the fixed parameters adopted for sending the synchronization message are 1ms length time domain resource granularity and 15KHz frequency domain resource subcarrier spacing.

And when the baseband parameter Numerology adopted by the synchronous message transmission is a specified configuration parameter, the baseband parameter Numerology adopted by the synchronous message transmission is determined by the terminal according to the specified configuration parameter and the Numerology of the transmitted data packet.

Specifically, the terminal determines Numerology of a transmitted data packet according to a corresponding relationship between at least one of traffic delay requirement, data transmission rate requirement, reliability requirement, quality of service (QoS) and speed condition of a vehicle to which the terminal belongs and the transmitted data packet Numerology, and further determines Numerology of a synchronization message, in specified configuration parameters, according to a traffic delay requirement, a data transmission rate requirement, reliability requirement, and a quality of service (QoS) of a data packet transmitted on a current carrier and/or bandwidth part.

Wherein, the synchronization configuration information further includes a carrier and/or a bandwidth part used for sending the synchronization message.

The synchronization configuration information includes one or more carriers and/or bandwidth parts, and is used for designating to send a synchronization message.

When the carrier and bandwidth part designated to send the synchronization message in the synchronization configuration information overlaps with the carrier and bandwidth part to send the service packet, the baseband parameter Numerology adopted by sending the synchronization message is determined according to the Numerology of sending the data packet on the overlapped carrier and bandwidth part.

Specifically, the terminal determines Numerology of a transmitted data packet according to a corresponding relationship between at least one of traffic delay requirement, data transmission rate requirement, reliability requirement, quality of service (QoS) and speed condition of a vehicle to which the terminal belongs and the transmitted data packet Numerology, and further determines Numerology of a synchronization message, in specified configuration parameters.

Wherein, if the synchronization configuration information includes a plurality of carriers and/or bandwidth parts, the method further includes:

and selecting one of the carriers and/or the bandwidth parts as a synchronization reference to transmit the synchronization message.

The step of receiving the synchronization message according to the synchronization configuration information comprises the step of determining a synchronization source according to the synchronization configuration information, the current condition whether the GNSS synchronization of the global navigation satellite system is available and the current network coverage condition;

the synchronization source comprises at least one of:

GNSS, eNB/gNB and another terminal sending synchronization messages.

Wherein, in the step of receiving the synchronization message according to the synchronization configuration information, the synchronization configuration information includes at least one of the following:

the frequency band used for synchronization message reception and the baseband parameter Numerology used for synchronization message reception.

When the synchronization configuration information comprises a frequency band adopted by receiving the synchronization message and a baseband parameter Numerology adopted by receiving the synchronization message, the frequency band adopted by receiving the synchronization message is a first frequency band, and the baseband parameter Numerology adopted by receiving the synchronization message is a fixed parameter; the frequency of the first frequency band is smaller than a preset value.

When the synchronization configuration information includes a frequency band adopted by receiving the synchronization message and a baseband parameter Numerology adopted by receiving the synchronization message, the frequency band adopted by receiving the synchronization message is a first frequency band, the baseband parameter Numerology adopted by receiving the synchronization message is a fixed parameter and is a designated configuration parameter, and the frequency of the first frequency band is smaller than a preset value.

When the synchronization configuration information includes a frequency band adopted by receiving the synchronization message and a baseband parameter Numerology adopted by receiving the synchronization message, the frequency band adopted by receiving the synchronization message is a second frequency band, and the baseband parameter Numerology adopted by receiving the synchronization message is a fixed parameter; and the frequency of the second frequency band is more than or equal to a preset value.

When the synchronization configuration information comprises a frequency band adopted by receiving the synchronization message and a baseband parameter Numerology adopted by receiving the synchronization message, the frequency band adopted by receiving the synchronization message is a second frequency band, and the baseband parameter Numerology adopted by receiving the synchronization message is a designated configuration parameter; and the frequency of the second frequency band is more than or equal to a preset value.

Wherein, the synchronization configuration information further comprises a carrier and/or a bandwidth part adopted by the synchronization message reception.

Wherein, the carrier and/or bandwidth part adopted by the synchronization message reception is used for specifying the reception of the synchronization message according to network configuration or pre-configuration, and the baseband parameter Numerology adopted by the synchronization message reception is the Numerology of the synchronization message configured or pre-configured by the network.

Wherein the carrier and/or bandwidth part adopted by the synchronization message reception is the carrier and/or bandwidth part determined as the synchronization reference, and the baseband parameter Numerology adopted by the synchronization message reception is Numerology of the synchronization message according to network configuration or pre-configuration.

The carrier and/or bandwidth part adopted by the synchronization message reception is the carrier and/or bandwidth part for monitoring, and the baseband parameter Numerology adopted by the synchronization message reception is the Numerology of the synchronization message according to network configuration or pre-configuration.

The carrier and/or bandwidth part adopted by the synchronization message reception is the carrier and/or bandwidth part for performing monitoring, and the baseband parameter Numerology adopted by the synchronization message reception is Numerology supported by the bandwidth part that can be supported by the terminal.

Wherein the step of receiving the synchronization message according to the synchronization configuration information comprises:

and according to the Numerology of the synchronous message, taking the Numerology of the synchronous message as the Numerology of the control signaling and/or the Numerology of the data signaling on the corresponding carrier wave and/or bandwidth part for receiving processing.

In order to achieve the above object, an embodiment of the present invention further provides a synchronization method, applied to a network side of vehicle-to-anything V2X communication, including:

and sending synchronous configuration information to a terminal, so that the terminal sends and/or receives synchronous messages according to the synchronous configuration information.

Wherein the synchronization configuration information comprises at least one of:

Wherein, the synchronization configuration information includes a frequency band used for sending the synchronization message and a baseband parameter Numerology used for sending the synchronization message, wherein:

the frequency band adopted by the synchronous message transmission is a first frequency band, and the baseband parameter Numerology adopted by the synchronous message transmission is a fixed parameter; or

The frequency band adopted by the synchronous message transmission is a first frequency band, and the baseband parameter Numerology adopted by the synchronous message transmission is a designated configuration parameter; or

The frequency band adopted by the sending of the synchronous message is a second frequency band, and the baseband parameter Numerology adopted by the sending of the synchronous message is a fixed parameter; or

The frequency band adopted by the message transmission is a second frequency band, and the baseband parameter Numerology adopted by the synchronous message transmission is a designated configuration parameter;

the frequency of the first frequency band is smaller than a preset value, and the frequency of the second frequency band is larger than or equal to the preset value.

Wherein, the carrier and/or bandwidth part included in the synchronization configuration information is the carrier and/or bandwidth part for transmitting the data packet.

Wherein, when the synchronization configuration information includes a frequency band adopted for receiving the synchronization message and a baseband parameter Numerology adopted for receiving the synchronization message, wherein:

the frequency band adopted by the receiving of the synchronous message is a first frequency band, and the baseband parameter Numerology adopted by the receiving of the synchronous message is a fixed parameter; or

The frequency band adopted by the receiving of the synchronous message is a first frequency band, and the baseband parameter Numerology adopted by the receiving of the synchronous message is a fixed parameter which is a designated configuration parameter; or

The frequency band adopted by the receiving of the synchronous message is a second frequency band, and the baseband parameter Numerology adopted by the receiving of the synchronous message is a fixed parameter; the frequency of the second frequency band is greater than or equal to a preset value; or

The frequency band adopted by the receiving of the synchronous message is a second frequency band, and the baseband parameter Numerology adopted by the receiving of the synchronous message is a designated configuration parameter;

The carrier and/or bandwidth part adopted by the synchronous message reception is the carrier and/or bandwidth part used for appointing to receive the synchronous message, the carrier and/or bandwidth part of the synchronous reference, and the carrier and/or bandwidth part used for monitoring.

In order to achieve the above object, an embodiment of the present invention further provides a terminal, including: a transceiver, a memory, a processor, and a computer program stored on the memory and executable on the processor; the transceiver is to:

Wherein, when the transceiver sends the synchronization message according to the synchronization configuration information, the synchronization configuration information includes at least one of the following:

The base band parameter Numerology adopted for sending the synchronization message is specifically that in the specified configuration parameters, the Numerology of the sent data packet is determined according to the corresponding relation between at least one of the service delay requirement, the data transmission rate requirement, the reliability requirement, the service quality QoS and the speed condition of the vehicle to which the terminal belongs and the Numerology of the sent data packet in the current carrier and/or bandwidth part, and then the Numerology of the synchronization message is determined.

Wherein, if the synchronization configuration information includes a plurality of carriers and/or bandwidth parts, the transceiver is further configured to:

When the transceiver receives the synchronization message according to the synchronization configuration information, determining a synchronization source according to the synchronization configuration information, the current condition whether the GNSS synchronization of the global navigation satellite system is available and the current network coverage condition;

the synchronization source comprises at least one of:

GNSS, eNB/gNB and another terminal sending synchronization messages.

When the transceiver receives the synchronization message according to the synchronization configuration information, the transceiver uses the Numerology of the synchronization message as the Numerology of the control signaling and/or the Numerology of the data signaling on the corresponding carrier and/or bandwidth part according to the Numerology of the synchronization message for receiving processing.

In order to achieve the above object, an embodiment of the present invention further provides a network device, including: a transceiver, a memory, a processor, and a computer program stored on the memory and executable on the processor; the transceiver is to:

In order to achieve the above object, an embodiment of the present invention further provides a terminal, including:

and the first transceiver module is used for sending and/or receiving the synchronization message according to the synchronization configuration information.

In order to achieve the above object, an embodiment of the present invention further provides a network device, including:

and the second transceiver module is used for sending the synchronous configuration information to the terminal so that the terminal sends and/or receives the synchronous message according to the synchronous configuration information.

In order to achieve the above object, an embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, implements the steps in the synchronization method according to the above embodiment applied to a terminal or implements the steps in the synchronization method according to the above embodiment applied to a network device.

At least one of the above technical solutions of the specific embodiment of the present invention has the following beneficial effects:

by sending and/or receiving the synchronization message according to the synchronization configuration information, synchronization can be achieved when the LTE V2X UE and the NR V2X UE work together, and normal work of the LTE V2X UE can be guaranteed.

Drawings

FIG. 1 is a flowchart illustrating a synchronization method according to an embodiment of the present invention;

fig. 2 is a frame structure diagram of a PSCCH channel of a PC5V2X system;

FIG. 3 is a frame structure diagram of the PSBCH channel of the PC5V2X system;

FIG. 4 is a detailed flowchart of step 101 in FIG. 1;

FIG. 5 is a second flowchart illustrating a synchronization method according to an embodiment of the present invention;

fig. 6 is a block diagram of a terminal according to an embodiment of the present invention;

fig. 7 is a block diagram of a terminal according to an embodiment of the present invention;

FIG. 8 is a block diagram of a network device according to an embodiment of the present invention;

fig. 9 is a block diagram of a network 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.

As shown in fig. 1, an embodiment of the present invention provides a synchronization method, which is applied to a vehicle-to-anything V2X communication terminal, and includes:

step 101: and sending and/or receiving the synchronization message according to the synchronization configuration information.

Here, due to the high relative moving speed of the internet of vehicles, the carrier frequency can reach 6GHz, so the correlation time of the received signal is shortened, and the pilot time interval of the channel needs to be shortened. Further, an extra frequency offset is introduced in the synchronization process, so that four pilot symbols are required under each subframe of PC5V2X, and the specific pilot symbol position is (2,5,8,11), as shown in fig. 2.

It should be noted that the frame structure of PC5V2X follows the basic design of the frame structure of D2D, where the length of TTI (Transmission Time Interval) is 1ms, one TTI includes two slots, the first symbol of a subframe is used to carry service data, and the receiving end performs AGC (Automatic gain control) adjustment on the symbol. The last symbol of the subframe is used as a GP, and the GP maps REs (Resource elements) by using a method of a punture.

In the PC5V2X signal, a dedicated AGC measurement region is not introduced, wherein the measurement of AGC is performed through the first symbol of the subframe, so that no additional mechanism is introduced in the standard, and no fixed AGC resource overhead is required, and only one Orthogonal Frequency Division Multiplexing (OFDM) symbol is lost when the state transition of D2D occurs.

It should be noted that, in the PC5V2X system, since the coverage radius is only 300 meters, the LTE normal CP length, i.e. the normal CP length, is supported, i.e. the system coverage requirement can be met.

Here, for PSBCH (Physical direct link Broadcast Channel), the number of occupied pilot symbols is 3, and the occupied positions are symbols 4,6, and 9, as shown in fig. 3.

In the PC5V2X system, 3 types of physical channels are included:

1) PSSCH (Physical Sidelink Shared Channel): a channel for carrying data; the physical layer processing mechanisms of coding, rate matching, interleaving and the like are the same as those of D2D;

2) PSCCH (Physical Sidelink Control Channel): used for carrying control information channel, sa (scheduling assignment) signaling; the physical layer processing mechanisms of coding, rate matching, interleaving and the like are the same as those of D2D;

3) PSBCH (Physical Sidelink Broadcast Channel): for synchronous control and regulation. Compared with D2D, 8 bits are added as a reservation to avoid the decoding error problem caused by the head-to-tail symbol. Wherein the PSSS generation is the same as D2D, SSSS employs the SS sequence of LTE subframe 5.

In the PC5V2X system, a sync source of the type in 3 is included: the node directly acquiring the GNSS can be used as a synchronization source; the eNB in the original network can be used as a synchronization source; the UE can be used as a synchronization source when the UE performs self-synchronization.

According to the synchronization method provided by the embodiment of the invention, the synchronization message is sent and/or received according to the synchronization configuration information, so that the synchronization can be realized when the LTE V2X UE and the NR V2X UE work together, and the normal work of the LTE V2X UE can be ensured.

Preferably, the synchronization configuration information is configured by the network side or acquired through pre-configuration.

As an optional implementation manner, in step 101, the synchronization configuration information includes at least one of the following:

On this basis, as a preferred implementation manner, when the synchronization configuration message includes a frequency band used for sending the synchronization message and a baseband parameter Numerology used for sending the synchronization message, where the frequency band used for sending the synchronization message is a first frequency band, and the baseband parameter Numerology used for sending the synchronization message is a fixed parameter; the frequency of the first frequency band is smaller than a preset value.

Here, preferably, the fixed parameters used for the synchronization message transmission are 1 ms-long time domain resource granularity and 15KHz frequency domain resource subcarrier spacing.

As another preferred implementation manner, when the synchronization configuration information includes a frequency band used for sending the synchronization message and a baseband parameter Numerology used for sending the synchronization message, where the frequency band used for sending the synchronization message is a first frequency band, and the baseband parameter Numerology used for sending the synchronization message is a specified configuration parameter; the frequency of the first frequency band is smaller than a preset value.

Here, the configuration parameters are specified as a variety of optional Numerology configurations.

Note that, both LTE V2X UE and NR V2X UE can use the low band for transmitting the service packets, and the low band is a band of 6GHz or less.

Therefore, in the two preferred implementations, the preset value is preferably 6 GHz.

Here, since the NR V2X UE may use a high frequency band for traffic packet transmission, where the high frequency band is a frequency band above 6GHz, as another preferred implementation, when the synchronization configuration information includes a frequency band used for synchronization message transmission and a baseband parameter Numerology used for synchronization message transmission, the frequency band used for synchronization message transmission is the second frequency band, and the baseband parameter Numerology used for synchronization message transmission is a fixed parameter; and the frequency of the second frequency band is more than or equal to a preset value.

Here, it is preferable that the preset value is 6 GHz.

It should be noted that the fixed parameters used for sending the synchronization message may be a time domain resource granularity of 1ms and a frequency domain resource subcarrier interval of 15 KHz. Of course, other time domain resource granularity and frequency domain resource subcarrier interval configurations may be configured, and the result of multiplying the two may be equal to the time domain resource granularity of 1ms length × 15KHz frequency domain resource subcarrier interval. And is not particularly limited herein.

As another preferred implementation, when the synchronization configuration information includes a frequency band used for sending the synchronization message and a baseband parameter Numerology used for sending the synchronization message, the frequency band used for sending the synchronization message is a second frequency band, and the baseband parameter Numerology used for sending the synchronization message is a specified configuration parameter.

Based on the above four preferred implementations, it is preferable that the carrier and/or bandwidth part for transmitting the synchronization message is at least one of the carrier and/or bandwidth part for transmitting the data packet, and when the baseband parameter Numerology adopted by the synchronization message transmission is the specified configuration parameter, the baseband parameter Numerology adopted by the synchronization message transmission is determined by the terminal according to the specified configuration parameter and the Numerology for transmitting the data packet.

It should be noted that, the baseband parameter Numerology used for sending the synchronization message is specifically determined by the terminal according to a corresponding relationship between at least one of a traffic delay requirement, a data transmission rate requirement, a reliability requirement, a quality of service QoS, and a speed condition of a vehicle to which the terminal belongs, and the transmitted packet Numerology, in a specified configuration parameter, of a traffic delay requirement, a data transmission rate requirement, a reliability requirement, and a quality of service QoS for sending the packet on a previous carrier and/or bandwidth part, and further determines the Numerology of the synchronization message.

Based on the above four preferred implementation manners, it is further preferred that the synchronization configuration information further includes a carrier and/or a bandwidth portion used for sending the synchronization message.

Here, the synchronization configuration message includes one or more carriers and/or bandwidth parts for designating transmission of the synchronization message.

It should be noted that, when the carrier and the bandwidth part specified in the synchronization configuration information for sending the synchronization message overlap with the carrier and the bandwidth part for sending the traffic packet, on the overlapped carrier and bandwidth part, the baseband parameter Numerology used for sending the synchronization message is determined according to the Numerology for sending the data packet.

Specifically, the baseband parameter Numerology used for sending the synchronization message is specifically determined by the terminal according to a corresponding relationship between at least one of a traffic delay requirement, a data transmission rate requirement, a reliability requirement, a quality of service QoS, and a speed condition of a vehicle to which the terminal belongs, and the Numerology of the sent data packet, in the specified configuration parameters, of the data packet sent on the current carrier and/or bandwidth part, and further, the Numerology of the synchronization message is determined.

Based on the embodiment shown in fig. 1, as a preferred implementation manner, the step of receiving the synchronization message according to the synchronization configuration information includes determining a synchronization source according to the synchronization configuration information, a condition whether GNSS synchronization of the global navigation satellite system is currently provided, and a current network coverage condition;

the synchronization source comprises at least one of:

GNSS, eNB/gNB and another terminal sending synchronization messages.

As another preferred implementation manner, in the step of receiving the synchronization message according to the synchronization configuration information, the synchronization configuration information includes at least one of the following:

On this basis, as a preferred implementation manner, when the synchronization configuration information includes a frequency band used for receiving the synchronization message and a baseband parameter Numerology used for receiving the synchronization message, the frequency band used for receiving the synchronization message is a first frequency band, and the baseband parameter Numerology used for receiving the synchronization message is a fixed parameter; the frequency of the first frequency band is smaller than a preset value.

As another preferred implementation manner, when the synchronization configuration information includes a frequency band used for receiving the synchronization message and a baseband parameter Numerology used for receiving the synchronization message, the frequency band used for receiving the synchronization message is a first frequency band, the baseband parameter Numerology used for receiving the synchronization message is a fixed parameter and is a specified configuration parameter, and a frequency of the first frequency band is smaller than a preset value.

It should be noted that, both LTE V2X UE and NR V2X UE can use the low frequency band to receive service packets, and the low frequency band is the frequency band below 6 GHz.

Since the NR V2X UE may receive the service packet using a high frequency band, where the high frequency band is a frequency band above 6GHz, as another preferred implementation, when the synchronization configuration information includes a frequency band used for receiving the synchronization message and a baseband parameter Numerology used for receiving the synchronization message, the frequency band used for receiving the synchronization message is a second frequency band, and the baseband parameter Numerology used for receiving the synchronization message is a fixed parameter; and the frequency of the second frequency band is more than or equal to a preset value.

Here, it is preferable that the preset value is 6 GHz.

As another preferred implementation, when the synchronization configuration information includes a frequency band used for receiving the synchronization message and a baseband parameter Numerology used for receiving the synchronization message, the frequency band used for receiving the synchronization message is a second frequency band, and the baseband parameter Numerology used for receiving the synchronization message is a designated configuration parameter; and the frequency of the second frequency band is more than or equal to a preset value.

Here, in the step of receiving the synchronization message according to the synchronization configuration information, based on the above four preferred implementations, preferably, the synchronization configuration information further includes a carrier and/or a bandwidth portion used for receiving the synchronization message.

Preferably, the carrier and/or bandwidth part used for receiving the synchronization message is used for specifying to receive the synchronization message according to network configuration or pre-configuration, and the baseband parameter Numerology used for receiving the synchronization message is the Numerology of the synchronization message configured or pre-configured by the network.

It is further preferred that the carrier and/or bandwidth part employed for the synchronization message reception is a carrier and/or bandwidth part determined as a synchronization reference, and the baseband parameter Numerology employed for the synchronization message reception is Numerology of the synchronization message according to network configuration or pre-configuration.

Here, the carrier and/or bandwidth part determined as the synchronization reference refers to a carrier and/or bandwidth part that selects one of a plurality of carriers and/or bandwidth parts as the synchronization reference when the synchronization configuration information includes a plurality of carriers and/or bandwidth parts in an embodiment that transmits the synchronization message according to the synchronization configuration information.

Still preferably, the carrier and/or bandwidth part used for receiving the synchronization message is a carrier and/or bandwidth part for listening, and the baseband parameter Numerology used for receiving the synchronization message is Numerology of the synchronization message according to network configuration or pre-configuration.

Still preferably, the carrier and/or bandwidth part used for receiving the synchronization message is a carrier and/or bandwidth part for performing listening, and the baseband parameter Numerology used for receiving the synchronization message is Numerology supported by the bandwidth part that can be supported by the terminal.

On the basis of the embodiment shown in fig. 1, preferably, as shown in fig. 4, the step of receiving the synchronization message according to the synchronization configuration information includes:

step 1011, according to the Numerology of the synchronization message, taking the Numerology of the synchronization message as the Numerology of the control signaling and/or the Numerology of the data signaling on the corresponding carrier and/or bandwidth part for receiving processing.

It should be noted here that, since the low frequency band is a frequency band below 6GHz, both LTE V2X UE and NR V2X UE can use the low frequency band to transmit service packets; the high frequency band is a frequency band above 6GHz, and the NR V2X UE uses the high frequency band to transmit the service packet, so the synchronization method provided by the above embodiment is applicable to NR V2X UE, and is partially applicable to LTE V2X UE.

LTE V2X UEs are able to send and/or receive synchronization messages according to synchronization configuration information, but unlike NR V2X UEs: according to the synchronous configuration information, when the synchronous message is sent, the frequency band adopted by the synchronous message is a first frequency band (namely, the frequency band lower than 6 GHz), and the baseband parameter Numerology adopted by the synchronous message is a fixed parameter, wherein the fixed parameter is 1ms length time domain resource granularity and 15KHz frequency domain resource subcarrier spacing;

according to the synchronization configuration information, when receiving the synchronization message, a frequency band adopted by the synchronization message reception is a first frequency band (i.e., a frequency band lower than 6 GHz), and a baseband parameter Numerology adopted by the synchronization message reception is a fixed parameter.

That is, the LTE V2X UE performs the reception process of the synchronization message according to fixed Numerology on the carrier on which the synchronization message can be received in the low frequency band.

As shown in fig. 5, an embodiment of the present invention further provides a synchronization method, applied to a network side of vehicle-to-anything V2X communication, including:

step 201, sending synchronization configuration information to a terminal, so that the terminal sends and/or receives synchronization messages according to the synchronization configuration information.

According to the synchronization method provided by the embodiment of the invention, the terminal can send and/or receive the synchronization message according to the synchronization configuration information by sending the synchronization configuration information to the terminal, so that the synchronization can be realized when the LTE V2X UE and the NR V2X UE work together, and the normal work of the LTE V2X UE can be ensured.

As an optional implementation manner, in step 201, the synchronization configuration information includes at least one of the following:

On this basis, preferably, the synchronization configuration information includes a frequency band used for sending the synchronization message and a baseband parameter Numerology used for sending the synchronization message, where:

Here, it is preferable that the preset value is 6 GHz.

Preferably, the fixed parameters used for sending the synchronization message are 1 ms-length time domain resource granularity and 15KHz frequency domain resource subcarrier spacing.

Preferably, the synchronization configuration information further includes a carrier and/or a bandwidth portion used for sending the synchronization message.

Here, the synchronization configuration information includes one or more carriers and/or bandwidth parts for specifying transmission of a synchronization message.

Preferably, the carrier and/or bandwidth part included in the synchronization configuration information is a carrier and/or bandwidth part for transmitting a data packet.

Based on the embodiment shown in fig. 5, preferably, the synchronization configuration information includes at least one of the following:

On this basis, it is preferable that the synchronization configuration information includes a frequency band used for receiving the synchronization message and a baseband parameter Numerology used for receiving the synchronization message, where:

Preferably, the synchronization configuration information further includes a carrier and/or a bandwidth portion used for receiving the synchronization message.

Preferably, the carrier and/or bandwidth part used for receiving the synchronization message is a carrier and/or bandwidth part used for designating to receive the synchronization message, a carrier and/or bandwidth part used for synchronization reference, and a carrier and/or bandwidth part used for monitoring.

As shown in fig. 6, an embodiment of the present invention further provides a terminal, including: a transceiver 610, a memory 620, a processor 600, a user interface 630, a bus interface, and a computer program stored on the memory 620 and executable on the processor 600; the transceiver 610 is configured to:

Where in fig. 6, the bus architecture may include any number of interconnected buses and bridges, with various circuits being linked together, particularly one or more processors represented by processor 600 and memory represented by memory 620. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 610 may be a number of elements including a transmitter and a transceiver providing a means for communicating with various other apparatus over a transmission medium. For different user devices, the user interface 630 may also be an interface capable of interfacing with a desired device externally, including but not limited to a keypad, display, speaker, microphone, joystick, etc.

The processor 600 is responsible for managing the bus architecture and general processing, and the memory 620 may store data used by the processor 600 in performing operations.

Optionally, the synchronization configuration information is configured by the network side or acquired through pre-configuration.

Optionally, when the transceiver 610 sends the synchronization message according to the synchronization configuration information, the synchronization configuration information includes at least one of the following:

Optionally, when the synchronization configuration information includes a frequency band used for sending the synchronization message and a baseband parameter Numerology used for sending the synchronization message, where the frequency band used for sending the synchronization message is a first frequency band, and the baseband parameter Numerology used for sending the synchronization message is a fixed parameter; the frequency of the first frequency band is smaller than a preset value.

Optionally, when the synchronization configuration information includes a frequency band used for sending the synchronization message and a baseband parameter Numerology used for sending the synchronization message, where the frequency band used for sending the synchronization message is a first frequency band, and the baseband parameter Numerology used for sending the synchronization message is a designated configuration parameter; the frequency of the first frequency band is smaller than a preset value.

Optionally, when the synchronization configuration information includes a frequency band used for sending the synchronization message and a baseband parameter Numerology used for sending the synchronization message, the frequency band used for sending the synchronization message is a second frequency band, and the baseband parameter Numerology used for sending the synchronization message is a fixed parameter; and the frequency of the second frequency band is more than or equal to a preset value.

Optionally, when the synchronization configuration information includes a frequency band used for sending the synchronization message and a baseband parameter Numerology used for sending the synchronization message, the frequency band used for sending the synchronization message is a second frequency band, and the baseband parameter Numerology used for sending the synchronization message is a specified configuration parameter.

Optionally, the fixed parameters used for sending the synchronization message are 1 ms-length time domain resource granularity and 15KHz frequency domain resource subcarrier spacing.

Optionally, the carrier and/or bandwidth part for transmitting the synchronization message is at least one of the carrier and/or bandwidth part for transmitting the data packet, and when the baseband parameter Numerology adopted by the synchronization message transmission is the specified configuration parameter, the baseband parameter Numerology adopted by the synchronization message transmission is determined by the terminal according to the specified configuration parameter and the Numerology for transmitting the data packet.

Optionally, the baseband parameter Numerology used for sending the synchronization message specifically is to determine, in the specified configuration parameters, Numerology of the sent data packet according to a correspondence between at least one of a traffic delay requirement, a data transmission rate requirement, a reliability requirement, a service QoS, and a speed condition of a vehicle to which the terminal belongs, and the Numerology of the sent data packet, and further determine the Numerology of the synchronization message.

Optionally, the synchronization configuration information further includes a carrier and/or a bandwidth portion used for sending the synchronization message.

Optionally, the synchronization configuration information includes one or more carriers and/or bandwidth portions, which are used to specify sending the synchronization message.

Optionally, when the carrier and the bandwidth part designated in the synchronization configuration information for sending the synchronization message overlap with the carrier and the bandwidth part for sending the service packet, on the overlapped carrier and bandwidth part, a baseband parameter Numerology adopted for sending the synchronization message is determined according to the Numerology for sending the data packet.

Optionally, the baseband parameter Numerology used for sending the synchronization message is specifically determined by the terminal according to a corresponding relationship between at least one of a traffic delay requirement, a data transmission rate requirement, a reliability requirement, a quality of service QoS, and a speed condition of a vehicle to which the terminal belongs, and the transmit packet Numerology, in the specified configuration parameters, of a traffic delay requirement, a data transmission rate requirement, the reliability requirement, and the QoS for sending the data packet on the current carrier and/or bandwidth part, and further determining the Numerology of the synchronization message.

Optionally, if the synchronization configuration information includes a plurality of carriers and/or bandwidth portions, the transceiver 610 is further configured to:

Optionally, when receiving the synchronization message according to the synchronization configuration information, the transceiver 610 determines a synchronization source according to the synchronization configuration information, a current GNSS synchronization condition of the global navigation satellite system, and a current network coverage condition;

the synchronization source comprises at least one of:

GNSS, eNB/gNB and another terminal sending synchronization messages.

Optionally, the synchronization configuration information includes at least one of the following:

Optionally, when the synchronization configuration information includes a frequency band used for receiving the synchronization message and a baseband parameter Numerology used for receiving the synchronization message, the frequency band used for receiving the synchronization message is a first frequency band, and the baseband parameter Numerology used for receiving the synchronization message is a fixed parameter; the frequency of the first frequency band is smaller than a preset value.

Optionally, when the synchronization configuration information includes a frequency band used for receiving the synchronization message and a baseband parameter Numerology used for receiving the synchronization message, the frequency band used for receiving the synchronization message is a first frequency band, the baseband parameter Numerology used for receiving the synchronization message is a fixed parameter and is a designated configuration parameter, and a frequency of the first frequency band is smaller than a preset value.

Optionally, when the synchronization configuration information includes a frequency band used for receiving the synchronization message and a baseband parameter Numerology used for receiving the synchronization message, the frequency band used for receiving the synchronization message is a second frequency band, and the baseband parameter Numerology used for receiving the synchronization message is a fixed parameter; and the frequency of the second frequency band is more than or equal to a preset value.

Optionally, when the synchronization configuration information includes a frequency band used for receiving the synchronization message and a baseband parameter Numerology used for receiving the synchronization message, the frequency band used for receiving the synchronization message is a second frequency band, and the baseband parameter Numerology used for receiving the synchronization message is a specified configuration parameter; and the frequency of the second frequency band is more than or equal to a preset value.

Optionally, the synchronization configuration information further includes a carrier and/or a bandwidth portion used for receiving the synchronization message.

Optionally, the carrier and/or bandwidth part adopted for receiving the synchronization message is used for specifying to receive the synchronization message according to network configuration or pre-configuration, and the baseband parameter Numerology adopted for receiving the synchronization message is Numerology of the synchronization message configured or pre-configured by the network.

Optionally, the carrier and/or bandwidth part adopted by the synchronization message reception is a carrier and/or bandwidth part determined as a synchronization reference, and the baseband parameter Numerology adopted by the synchronization message reception is Numerology of the synchronization message according to network configuration or pre-configuration.

Optionally, the carrier and/or bandwidth part used for receiving the synchronization message is a carrier and/or bandwidth part for performing listening, and the baseband parameter Numerology used for receiving the synchronization message is Numerology of the synchronization message according to network configuration or pre-configuration.

Optionally, the carrier and/or bandwidth part used for receiving the synchronization message is a carrier and/or bandwidth part for performing listening, and the baseband parameter Numerology used for receiving the synchronization message is Numerology supported by the bandwidth part that can be supported by the terminal.

Optionally, when the transceiver receives the synchronization message according to the synchronization configuration information, according to the Numerology of the synchronization message, the Numerology of the synchronization message is used as the Numerology of the control signaling and/or the Numerology of the data signaling on the corresponding carrier and/or bandwidth part for receiving processing.

As shown in fig. 7, an embodiment of the present invention further provides a terminal, including:

the first transceiver module 701 is configured to send and/or receive a synchronization message according to the synchronization configuration information.

In the terminal according to the embodiment of the present invention, in the step of sending the synchronization message according to the synchronization configuration information in the first transceiver module 701, the synchronization configuration information includes at least one of the following contents:

In the terminal of the embodiment of the present invention, the synchronization configuration information includes a frequency band used for sending the synchronization message and a baseband parameter Numerology used for sending the synchronization message, where the frequency band used for sending the synchronization message is a first frequency band, and the baseband parameter Numerology used for sending the synchronization message is a fixed parameter; the frequency of the first frequency band is smaller than a preset value.

In the terminal of the embodiment of the present invention, the synchronization configuration information includes a frequency band used for sending the synchronization message and a baseband parameter Numerology used for sending the synchronization message, where the frequency band used for sending the synchronization message is a first frequency band, and the baseband parameter Numerology used for sending the synchronization message is a designated configuration parameter; the frequency of the first frequency band is smaller than a preset value.

In the terminal of the embodiment of the present invention, when the synchronization configuration information includes a frequency band used for sending the synchronization message and a baseband parameter Numerology used for sending the synchronization message, the frequency band used for sending the synchronization message is a second frequency band, and the baseband parameter Numerology used for sending the synchronization message is a fixed parameter; and the frequency of the second frequency band is more than or equal to a preset value.

In the terminal of the embodiment of the present invention, when the synchronization configuration information includes a frequency band used for sending the synchronization message and a baseband parameter Numerology used for sending the synchronization message, the frequency band used for sending the synchronization message is a second frequency band, and the baseband parameter Numerology used for sending the synchronization message is a designated configuration parameter.

In the terminal of the embodiment of the invention, the fixed parameters adopted for sending the synchronous message are the time domain resource granularity with the length of 1ms and the sub-carrier interval of the frequency domain resource of 15 KHz.

According to the terminal of the embodiment of the invention, the carrier and/or bandwidth part for sending the synchronization message is at least one of the carrier and/or bandwidth part for sending the data packet, and when the baseband parameter Numerology adopted by the synchronization message sending is the specified configuration parameter, the baseband parameter Numerology adopted by the synchronization message sending is determined by the terminal according to the specified configuration parameter and the Numerology for sending the data packet.

In the terminal according to the embodiment of the present invention, the baseband parameter Numerology used for sending the synchronization message is specifically determined by the terminal according to a correspondence relationship between at least one of a traffic delay requirement, a data transmission rate requirement, a reliability requirement, a quality of service QoS, and a speed condition of a vehicle to which the terminal belongs, and the transmission packet Numerology for sending the data packet, in the specified configuration parameters, and the Numerology for sending the synchronization message is further determined.

In the terminal of the embodiment of the present invention, the synchronization configuration information further includes a carrier and/or a bandwidth portion used for sending the synchronization message.

In the terminal of the embodiment of the present invention, the synchronization configuration information includes one or more carriers and/or bandwidth parts, and is used to designate to send the synchronization message.

In the terminal according to the embodiment of the present invention, when the carrier and the bandwidth part designated in the synchronization configuration information for sending the synchronization message overlap with the carrier and the bandwidth part for sending the service packet, on the overlapped carrier and bandwidth part, a baseband parameter Numerology used for sending the synchronization message is determined according to the Numerology for sending the data packet.

In the terminal of the embodiment of the present invention, if there are multiple carriers and/or bandwidth portions included in the synchronization configuration information, the first transceiver module 701 is further configured to:

In the terminal according to the embodiment of the present invention, the first transceiver module 701 is further configured to: when receiving the synchronization message according to the synchronization configuration information, determining a synchronization source according to the synchronization configuration information, the current condition whether the GNSS synchronization of the global navigation satellite system is available and the current network coverage condition;

the synchronization source comprises at least one of:

GNSS, eNB/gNB and another terminal sending synchronization messages.

In the step of receiving the synchronization message according to the synchronization configuration information, the synchronization configuration information includes at least one of the following contents:

In the terminal of the embodiment of the present invention, when the synchronization configuration information includes a frequency band used for receiving a synchronization message and a baseband parameter Numerology used for receiving the synchronization message, the frequency band used for receiving the synchronization message is a first frequency band, and the baseband parameter Numerology used for receiving the synchronization message is a fixed parameter; the frequency of the first frequency band is smaller than a preset value.

In the terminal of the embodiment of the present invention, when the synchronization configuration information includes a frequency band used for receiving a synchronization message and a baseband parameter Numerology used for receiving the synchronization message, the frequency band used for receiving the synchronization message is a first frequency band, the baseband parameter Numerology used for receiving the synchronization message is a fixed parameter and is a designated configuration parameter, and a frequency of the first frequency band is smaller than a preset value.

In the terminal of the embodiment of the present invention, when the synchronization configuration information includes a frequency band used for receiving the synchronization message and a baseband parameter Numerology used for receiving the synchronization message, the frequency band used for receiving the synchronization message is a second frequency band, and the baseband parameter Numerology used for receiving the synchronization message is a fixed parameter; and the frequency of the second frequency band is more than or equal to a preset value.

In the terminal of the embodiment of the present invention, when the synchronization configuration information includes a frequency band used for receiving the synchronization message and a baseband parameter Numerology used for receiving the synchronization message, the frequency band used for receiving the synchronization message is a second frequency band, and the baseband parameter Numerology used for receiving the synchronization message is a designated configuration parameter; and the frequency of the second frequency band is more than or equal to a preset value.

In the terminal of the embodiment of the present invention, the synchronization configuration information further includes a carrier and/or a bandwidth portion used for receiving the synchronization message.

In the terminal according to the embodiment of the present invention, the carrier and/or bandwidth part used for receiving the synchronization message is configured or preconfigured according to the network for specifying to receive the synchronization message, and the baseband parameter Numerology used for receiving the synchronization message is Numerology of the synchronization message configured or preconfigured by the network.

In the terminal according to the embodiment of the present invention, the carrier and/or bandwidth part used for receiving the synchronization message is the carrier and/or bandwidth part determined as the synchronization reference, and the baseband parameter Numerology used for receiving the synchronization message is Numerology of the synchronization message according to network configuration or pre-configuration.

In the terminal according to the embodiment of the present invention, the carrier and/or bandwidth part used for receiving the synchronization message is a carrier and/or bandwidth part for performing listening, and the baseband parameter Numerology used for receiving the synchronization message is Numerology of the synchronization message according to network configuration or pre-configuration.

In the terminal according to the embodiment of the present invention, the carrier and/or bandwidth part used for receiving the synchronization message is a carrier and/or bandwidth part for performing listening, and the baseband parameter Numerology used for receiving the synchronization message is Numerology supported by the bandwidth part that can be supported by the terminal.

In the terminal according to the embodiment of the present invention, the first transceiver module 701 is further configured to: and when the synchronization message is received according to the synchronization configuration information, taking the Numerology of the synchronization message as the Numerology of the control signaling and/or the Numerology of the data signaling on the corresponding carrier wave and/or bandwidth part according to the Numerology of the synchronization message for receiving processing.

According to the terminal of the embodiment of the invention, the synchronization configuration information sent by the network equipment is used for sending and/or receiving the synchronization message according to the synchronization configuration information, so that the synchronization can be realized when the LTE V2X UE and the NR V2X UE work together, and the normal work of the LTE V2X UE can be ensured.

It should be noted that the terminal is a device corresponding to the synchronization method, and all the implementation manners in the method embodiments are applicable to the embodiment of the device, so that the same technical effect can be achieved.

As shown in fig. 8, an embodiment of the present invention further provides a network device, including: a transceiver 810, a memory 820, a processor 800 and a computer program stored on the memory 820 and executable on the processor 800; the transceiver 810 is configured to:

Where in fig. 8, the bus architecture may include any number of interconnected buses and bridges, with various circuits being linked together, particularly one or more processors represented by processor 800 and memory represented by memory 820. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 810 may be a number of elements, including a transmitter and a transceiver, providing a means for communicating with various other apparatus over a transmission medium. The processor 800 is responsible for managing the bus architecture and general processing, and the memory 820 may store data used by the processor 800 in performing operations.

The processor 800 is responsible for managing the bus architecture and general processing, and the memory 820 may store data used by the processor 800 in performing operations.

Optionally, when the synchronization configuration information includes a frequency band used for sending the synchronization message and a baseband parameter Numerology used for sending the synchronization message, where:

Optionally, the carrier and/or bandwidth part included in the synchronization configuration information is a carrier and/or bandwidth part for sending a data packet.

Optionally, when the synchronization configuration information includes a frequency band used for receiving the synchronization message and a baseband parameter Numerology used for receiving the synchronization message, where:

Optionally, the carrier and/or bandwidth part used for receiving the synchronization message is a carrier and/or bandwidth part used for specifying to receive the synchronization message, a carrier and/or bandwidth part used for synchronization reference, and a carrier and/or bandwidth part used for performing monitoring.

As shown in fig. 9, an embodiment of the present invention further provides a network device, including:

the second transceiver module 901 is configured to send synchronization configuration information to a terminal, so that the terminal sends and/or receives a synchronization message according to the synchronization configuration information.

In the network device of the embodiment of the present invention, the synchronization configuration information includes at least one of the following contents:

In the network device of the embodiment of the present invention, when the synchronization configuration information includes a frequency band used for sending the synchronization message and a baseband parameter Numerology used for sending the synchronization message, the synchronization configuration information includes:

In the network device of the embodiment of the invention, the fixed parameters adopted for sending the synchronous message are the time domain resource granularity with the length of 1ms and the subcarrier interval of the frequency domain resource of 15 KHz.

In the network device of the embodiment of the present invention, the synchronization configuration information further includes a carrier and/or a bandwidth portion used for sending the synchronization message.

In the network device according to the embodiment of the present invention, the synchronization configuration information includes one or more carriers and/or bandwidth parts, and is used to designate to send the synchronization message.

In the network device according to the embodiment of the present invention, the carrier and/or bandwidth part included in the synchronization configuration information is a carrier and/or bandwidth part for transmitting a data packet.

In the network device of the embodiment of the present invention, when the synchronization configuration information includes a frequency band used for receiving the synchronization message and a baseband parameter Numerology used for receiving the synchronization message, the synchronization configuration information includes:

In the network device of the embodiment of the present invention, the synchronization configuration information further includes a carrier and/or a bandwidth portion used for receiving the synchronization message.

In the network device according to the embodiment of the present invention, the carrier and/or bandwidth portion used for receiving the synchronization message is a carrier and/or bandwidth portion used for specifying reception of the synchronization message, a carrier and/or bandwidth portion used for synchronization reference, and a carrier and/or bandwidth portion used for performing monitoring.

The network equipment of the embodiment of the invention can ensure that the terminal can send and/or receive the synchronous messages according to the synchronous configuration information by sending the synchronous configuration information to the terminal, thereby realizing synchronization when the LTE V2X UE and the NR V2X UE work together, and ensuring the normal work of the LTE V2X UE.

It should be noted that the apparatus is an apparatus corresponding to the above method embodiment, and all the implementations in the above method embodiment are applicable to the embodiment of the apparatus, and the same technical effect can be achieved.

In various embodiments of the present invention, it should be understood that the sequence numbers of the above-mentioned 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 on the implementation process of the embodiments of the present invention.

While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. A synchronization method is applied to a vehicle-to-everything V2X communication terminal, and is characterized by comprising the following steps:

sending and/or receiving a synchronization message according to the synchronization configuration information;

wherein, in the step of sending the synchronization message according to the synchronization configuration information, the synchronization configuration information includes the following contents:

indicating a synchronization message transmission, a frequency band adopted by the synchronization message transmission and a baseband parameter Numerology adopted by the synchronization message transmission;

in the step of receiving the synchronization message according to the synchronization configuration information, the synchronization configuration information includes:

a frequency band used for receiving the synchronous message and a baseband parameter Numerology used for receiving the synchronous message;

the synchronous configuration information is configured by a network side or acquired through pre-configuration;

when the synchronization configuration information includes a frequency band used for sending the synchronization message and a baseband parameter Numerology used for sending the synchronization message, wherein the frequency band used for sending the synchronization message is a first frequency band, and the baseband parameter Numerology used for sending the synchronization message is a fixed parameter; the frequency of the first frequency band is smaller than a preset value; or

When the synchronization configuration information comprises a frequency band adopted by sending the synchronization message and a baseband parameter Numerology adopted by sending the synchronization message, wherein the frequency band adopted by sending the synchronization message is a first frequency band, and the baseband parameter Numerology adopted by sending the synchronization message is a designated configuration parameter; the frequency of the first frequency band is smaller than a preset value; or

When the synchronization configuration information comprises a frequency band adopted by sending the synchronization message and a baseband parameter Numerology adopted by sending the synchronization message, the frequency band adopted by sending the synchronization message is a second frequency band, and the baseband parameter Numerology adopted by sending the synchronization message is a fixed parameter; the frequency of the second frequency band is greater than or equal to a preset value; or

And when the synchronization configuration information comprises a frequency band adopted by sending the synchronization message and a baseband parameter Numerology adopted by sending the synchronization message, the frequency band adopted by sending the synchronization message is a second frequency band, and the baseband parameter Numerology adopted by sending the synchronization message is a specified configuration parameter.

2. The synchronization method according to claim 1, wherein the fixed parameters for synchronization message transmission are 1ms length time domain resource granularity and 15KHz frequency domain resource subcarrier spacing.

3. Synchronization method according to claim 1 or 2, characterized in that the carrier and/or bandwidth part on which the synchronization message is sent is at least one of the carrier and/or bandwidth part on which the data packet is sent, and when the baseband parameter Numerology employed for the synchronization message sending is a specified configuration parameter, the baseband parameter Numerology employed for the synchronization message sending is determined by the terminal according to the specified configuration parameter and the Numerology in which the data packet is sent.

4. The synchronization method according to claim 3, wherein the baseband parameter Numerology used for sending the synchronization message is specifically determined by the terminal according to a correspondence relationship between at least one of a traffic delay requirement, a data transmission rate requirement, a reliability requirement, a quality of service QoS and a speed condition of a vehicle to which the terminal belongs, and the transmitted packet Numerology for sending the packet on a current carrier and/or bandwidth part among the specified configuration parameters, and further determining the Numerology of the synchronization message.

5. The synchronization method according to claim 1, wherein the synchronization configuration information further comprises a carrier and/or a bandwidth portion used for synchronization message transmission.

6. The synchronization method according to claim 5, wherein the synchronization configuration information comprises one or more carriers and/or bandwidth parts for specifying sending of synchronization messages.

7. The synchronization method of claim 6, wherein when the carrier and bandwidth part designated in the synchronization configuration information for transmitting the synchronization message overlaps with the carrier and bandwidth part for transmitting the traffic packet, the baseband parameter Numerology used for transmitting the synchronization message is determined according to Numerology of the transmitted data packet on the overlapped carrier and bandwidth part.

8. The synchronization method according to claim 7, wherein the baseband parameter Numerology used for sending the synchronization message is specifically determined by the terminal according to a correspondence relationship between at least one of a traffic delay requirement, a data transmission rate requirement, a reliability requirement, a quality of service QoS and a speed condition of a vehicle to which the terminal belongs, and the transmitted packet Numerology for transmitting the packet on a current carrier and/or bandwidth portion among the specified configuration parameters, and further determining the Numerology of the synchronization message.

9. The synchronization method according to claim 6, wherein if the synchronization configuration information includes a plurality of carriers and/or bandwidth parts, the method further comprises:

10. The synchronization method according to claim 1, wherein the step of receiving the synchronization message according to the synchronization configuration information comprises determining a synchronization source according to the synchronization configuration information, a current condition of whether GNSS synchronization is available for Global Navigation Satellite System (GNSS), and a current network coverage condition;

the synchronization source comprises at least one of:

GNSS, eNB/gNB and another terminal sending synchronization messages.

11. The synchronization method according to claim 1, wherein when the synchronization configuration information includes a frequency band used for receiving the synchronization message and a baseband parameter Numerology used for receiving the synchronization message, the frequency band used for receiving the synchronization message is a first frequency band, and the baseband parameter Numerology used for receiving the synchronization message is a fixed parameter; the frequency of the first frequency band is smaller than a preset value.

12. The synchronization method according to claim 1, wherein when the synchronization configuration information includes a frequency band used for receiving the synchronization message and a baseband parameter Numerology used for receiving the synchronization message, the frequency band used for receiving the synchronization message is a first frequency band, the baseband parameter Numerology used for receiving the synchronization message is a fixed parameter, and a frequency of the first frequency band is smaller than a preset value.

13. The synchronization method according to claim 1, wherein when the synchronization configuration information includes a frequency band used for receiving the synchronization message and a baseband parameter Numerology used for receiving the synchronization message, the frequency band used for receiving the synchronization message is a second frequency band, and the baseband parameter Numerology used for receiving the synchronization message is a fixed parameter; and the frequency of the second frequency band is more than or equal to a preset value.

14. The synchronization method according to claim 1, wherein when the synchronization configuration information includes a frequency band used for receiving the synchronization message and a baseband parameter Numerology used for receiving the synchronization message, the frequency band used for receiving the synchronization message is a second frequency band, and the baseband parameter Numerology used for receiving the synchronization message is a specific configuration parameter; and the frequency of the second frequency band is more than or equal to a preset value.

15. The synchronization method according to any one of claims 11 to 14, wherein the synchronization configuration information further comprises a carrier and/or a bandwidth portion used for receiving the synchronization message.

16. The synchronization method according to claim 15, wherein the carrier and/or bandwidth portion employed for the synchronization message reception is used for specifying reception of the synchronization message according to network configuration or pre-configuration, and the baseband parameter Numerology employed for the synchronization message reception is Numerology of the synchronization message configured or pre-configured by the network.

17. The synchronization method according to claim 15, wherein the carrier and/or bandwidth part employed for the synchronization message reception is a carrier and/or bandwidth part determined as a synchronization reference, and wherein the baseband parameter Numerology employed for the synchronization message reception is Numerology of a synchronization message according to a network configuration or pre-configuration.

18. The synchronization method according to claim 15, wherein the carrier and/or bandwidth part used for the synchronization message reception is a carrier and/or bandwidth part for listening, and the baseband parameter Numerology used for the synchronization message reception is Numerology of the synchronization message according to network configuration or pre-configuration.

19. The synchronization method according to claim 15, wherein the carrier and/or bandwidth part used for the synchronization message reception is a listening carrier and/or bandwidth part, and wherein the baseband parameter Numerology used for the synchronization message reception is Numerology supported by a bandwidth part that can be supported by the terminal.

20. The synchronization method according to claim 1, wherein the step of receiving the synchronization message according to the synchronization configuration information comprises:

21. A synchronization method is applied to a network side of vehicle-to-everything V2X communication and is characterized by comprising the following steps

Sending synchronous configuration information to a terminal, so that the terminal sends and/or receives synchronous messages according to the synchronous configuration information;

wherein the synchronization configuration information includes:

indicating a synchronization message transmission, a frequency band adopted by the synchronization message transmission and a baseband parameter Numerology adopted by the synchronization message transmission; or

The synchronization configuration information includes:

22. The synchronization method according to claim 21, wherein the fixed parameters for synchronization message transmission are 1ms length time domain resource granularity and 15KHz frequency domain resource subcarrier spacing.

23. The synchronization method according to claim 21, wherein the synchronization configuration information further comprises a carrier and/or bandwidth part used for synchronization message transmission when the synchronization configuration information comprises at least one of whether to transmit a synchronization message, a frequency band used for synchronization message transmission, and a baseband parameter Numerology used for synchronization message transmission.

24. The synchronization method according to claim 23, wherein the synchronization configuration information comprises one or more of carrier and/or bandwidth portions for specifying sending of synchronization messages.

25. The synchronization method according to claim 23, wherein the synchronization configuration information comprises a carrier and/or a bandwidth part of a transmission data packet.

26. The synchronization method of claim 21, wherein the synchronization configuration information comprises a frequency band used for receiving the synchronization message and a baseband parameter Numerology used for receiving the synchronization message, and wherein:

27. The synchronization method according to claim 21, wherein the synchronization configuration information further comprises a carrier and/or bandwidth portion used for synchronization message reception when the synchronization configuration information comprises at least one of a frequency band used for synchronization message reception and a baseband parameter Numerology used for synchronization message reception.

28. The synchronization method according to claim 27, wherein the carrier and/or bandwidth portion used for receiving the synchronization message is a carrier and/or bandwidth portion used for specifying the receiving of the synchronization message, a carrier and/or bandwidth portion of the synchronization reference, and a carrier and/or bandwidth portion for performing listening.

29. A terminal, comprising: a transceiver, a memory, a processor, and a computer program stored on the memory and executable on the processor; wherein the transceiver is configured to:

wherein, when the transceiver sends the synchronization message according to the synchronization configuration information, the synchronization configuration information includes:

when the transceiver receives the synchronization message according to the synchronization configuration information, the synchronization configuration information includes:

30. The terminal of claim 29, wherein the fixed parameters for synchronization message transmission are 1 ms-long time domain resource granularity and 15KHz frequency domain resource subcarrier spacing.

31. The terminal of claim 29, wherein the carrier and/or bandwidth part for transmitting the synchronization message is at least one of a carrier and/or bandwidth part for transmitting the data packet, and wherein when the baseband parameter Numerology used for transmitting the synchronization message is a specified configuration parameter, the baseband parameter Numerology used for transmitting the synchronization message is determined by the terminal according to the specified configuration parameter and the Numerology used for transmitting the data packet.

32. The terminal of claim 31, wherein the baseband parameter Numerology used for sending the synchronization message is specifically to determine the Numerology for sending the data packet and further determine the Numerology for the synchronization message according to a correspondence relationship between at least one of a traffic delay requirement, a data transmission rate requirement, a reliability requirement, a quality of service QoS, and a speed condition of a vehicle to which the terminal belongs, and the Numerology for sending the data packet, among the specified configuration parameters.

33. A terminal according to claim 29 or 30, wherein the synchronization configuration information further comprises a carrier and/or bandwidth part used for synchronization message transmission.

34. The terminal according to claim 33, wherein the synchronization configuration information comprises one or more of a carrier and/or a bandwidth portion for specifying sending of a synchronization message.

35. The terminal of claim 34, wherein when the carrier and bandwidth part designated in the synchronization configuration information for sending the synchronization message overlaps with the carrier and bandwidth part for sending the traffic packet, a baseband parameter Numerology used for sending the synchronization message is determined according to Numerology of sending the data packet on the overlapped carrier and bandwidth part.

36. The terminal of claim 35, wherein the baseband parameter Numerology used for sending the synchronization message is specifically determined by the terminal according to a correspondence between at least one of traffic delay requirement, data transmission rate requirement, reliability requirement, quality of service QoS, and speed condition of a vehicle to which the terminal belongs, and the transmit packet Numerology for sending the data packet, and further determining the Numerology for sending the synchronization message, among specified configuration parameters.

37. The terminal according to claim 34, wherein if the synchronization configuration information includes a plurality of carriers and/or bandwidth portions, the transceiver is further configured to:

38. The terminal of claim 29, wherein the transceiver determines a synchronization source according to the synchronization configuration information, whether GNSS synchronization is currently available, and a current network coverage when receiving the synchronization message according to the synchronization configuration information;

the synchronization source comprises at least one of:

GNSS, eNB/gNB and another terminal sending synchronization messages.

39. The terminal of claim 29, wherein when the synchronization configuration information includes a frequency band used for receiving the synchronization message and a baseband parameter Numerology used for receiving the synchronization message, the frequency band used for receiving the synchronization message is a first frequency band, and the baseband parameter Numerology used for receiving the synchronization message is a fixed parameter; the frequency of the first frequency band is smaller than a preset value.

40. The terminal of claim 29, wherein when the synchronization configuration information includes a frequency band used for receiving the synchronization message and a baseband parameter Numerology used for receiving the synchronization message, the frequency band used for receiving the synchronization message is a first frequency band, the baseband parameter Numerology used for receiving the synchronization message is a fixed parameter, and a frequency of the first frequency band is smaller than a preset value.

41. The terminal of claim 29, wherein when the synchronization configuration information includes a frequency band used for receiving the synchronization message and a baseband parameter Numerology used for receiving the synchronization message, the frequency band used for receiving the synchronization message is a second frequency band, and the baseband parameter Numerology used for receiving the synchronization message is a fixed parameter; and the frequency of the second frequency band is more than or equal to a preset value.

42. The terminal of claim 29, wherein when the synchronization configuration information includes a frequency band used for receiving the synchronization message and a baseband parameter Numerology used for receiving the synchronization message, the frequency band used for receiving the synchronization message is a second frequency band, and the baseband parameter Numerology used for receiving the synchronization message is a specific configuration parameter; and the frequency of the second frequency band is more than or equal to a preset value.

43. A terminal according to any of claims 39 to 42, wherein the synchronization configuration information further comprises a carrier and/or bandwidth portion used for synchronization message reception.

44. The terminal of claim 43, wherein the carrier and/or bandwidth portion employed for the synchronization message reception is used for specifying reception of a synchronization message according to network configuration or pre-configuration, and wherein the baseband parameter Numerology employed for the synchronization message reception is Numerology of the synchronization message configured or pre-configured by the network.

45. The terminal of claim 43, wherein the carrier and/or bandwidth part employed for the synchronization message reception is a carrier and/or bandwidth part determined as a synchronization reference, and wherein the baseband parameter Numerology employed for the synchronization message reception is Numerology of a synchronization message according to a network configuration or pre-configuration.

46. The terminal of claim 43, wherein the carrier and/or bandwidth part used for the synchronization message reception is a listening carrier and/or bandwidth part, and wherein the baseband parameter Numerology used for the synchronization message reception is Numerology of a synchronization message according to a network configuration or pre-configuration.

47. The terminal of claim 43, wherein a carrier and/or bandwidth portion used for the synchronization message reception is a listening carrier and/or bandwidth portion, and wherein a baseband parameter Numerology used for the synchronization message reception is Numerology supported by a bandwidth portion that can be supported by the terminal.

48. The terminal of claim 29, wherein the transceiver receives the synchronization message according to the synchronization configuration information, and wherein the Numerology of the synchronization message is used as Numerology of control signaling and/or Numerology of data signaling on the corresponding carrier and/or bandwidth part according to the Numerology of the synchronization message.

49. A network device, comprising: a transceiver, a memory, a processor, and a computer program stored on the memory and executable on the processor; wherein the transceiver is configured to:

wherein the synchronization configuration information includes:

indicating a synchronization message transmission, a frequency band adopted by the synchronization message transmission and a baseband parameter Numerology adopted by the synchronization message transmission; alternatively, the first and second electrodes may be,

the synchronization configuration information includes:

50. The network device of claim 49, wherein the fixed parameters used for synchronization message transmission are 1ms length time domain resource granularity and 15KHz frequency domain resource subcarrier spacing.

51. The network device of claim 49, wherein the synchronization configuration information further comprises a carrier and/or bandwidth portion utilized for synchronization message transmission when the synchronization configuration information comprises at least one of whether to transmit a synchronization message, a frequency band utilized for synchronization message transmission, and a baseband parameter Numerology utilized for synchronization message transmission.

52. The network device of claim 51, wherein the synchronization configuration information comprises one or more of a carrier and/or a bandwidth portion for specifying sending of synchronization messages.

53. The network device of claim 51, wherein the synchronization configuration information comprises a carrier and/or bandwidth portion for transmitting a data packet.

54. The network device of claim 49, wherein the synchronization configuration information comprises a frequency band used for synchronization message reception and a baseband parameter Numerology used for synchronization message reception, and wherein:

55. The network device of claim 49, wherein the synchronization configuration information further comprises a carrier and/or bandwidth portion utilized for synchronization message reception when the synchronization configuration information comprises at least one of a frequency band utilized for synchronization message reception and a baseband parameter Numerology utilized for synchronization message reception.

56. The network device of claim 55, wherein the carrier and/or bandwidth portion used for receiving the synchronization message is a carrier and/or bandwidth portion used for specifying receiving of the synchronization message, a carrier and/or bandwidth portion used for synchronization reference, and a carrier and/or bandwidth portion used for listening.

57. A terminal, comprising:

the first transceiver module is used for sending and/or receiving the synchronous message according to the synchronous configuration information;

when the first transceiver module sends a synchronization message according to synchronization configuration information, the synchronization configuration information includes:

when the first transceiver module receives a synchronization message according to synchronization configuration information, the synchronization configuration information includes:

58. A network device, comprising:

the second transceiver module is used for sending synchronous configuration information to a terminal, so that the terminal sends and/or receives synchronous messages according to the synchronous configuration information;

wherein the synchronization configuration information includes:

the synchronization configuration information includes:

59. A computer-readable storage medium, characterized in that a computer program is stored thereon, which computer program, when being executed by a processor, carries out the steps in the synchronization method according to any one of claims 1 to 20 or carries out the steps in the synchronization method according to any one of claims 21 to 28.