CN111756500A

CN111756500A - Information transmission method, device, communication equipment and storage medium

Info

Publication number: CN111756500A
Application number: CN201910250653.8A
Authority: CN
Inventors: 张轶; 夏亮; 徐晓东
Original assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Current assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Priority date: 2019-03-29
Filing date: 2019-03-29
Publication date: 2020-10-09
Anticipated expiration: 2039-03-29
Also published as: CN111756500B

Abstract

The invention discloses an information transmission method, an information transmission device, first communication equipment, second communication equipment and a storage medium. The method comprises the following steps: the first communication device transmits direct link feedback control information (SFCI) on a physical direct link feedback channel (PSFCH) according to the first identifier.

Description

Information transmission method, device, communication equipment and storage medium

Technical Field

The present invention relates to the field of wireless communications, and in particular, to an information transmission method, an information transmission apparatus, a communication device, and a storage medium.

Background

The vehicular wireless communication (V2X) system is a communication system supporting vehicle-to-vehicle (V2V) communication and vehicle-to-infrastructure (V2I) communication, and is a large system network for wireless communication and information exchange between vehicles-X (X may be a vehicle, a road, a pedestrian, the internet, and the like).

Currently, in the related art, it is determined that unicast (unicast) and multicast (groupcast) support hybrid automatic repeat request (HARQ) feedback and HARQ combining for a new air interface (NR) V2X at the physical layer. However, there is currently no effective solution for how to solve the problem of HARQ-ACK spoofing in V2X communication systems.

Disclosure of Invention

In order to solve the existing technical problem, embodiments of the present invention provide an information transmission method, apparatus, communication device and storage medium, which at least solve the problem that HARQ-ACK is forged in a V2X communication system.

The technical scheme of the embodiment of the invention is realized as follows:

at least one embodiment of the present invention provides an information transmission method applied to a first communication device, including:

and according to the first identifier, sending direct link Feedback control information (SFCI) on a Physical direct link Feedback CHannel (PSFCH).

Further in accordance with at least one embodiment of the present invention, when the SFCI is transmitted on the PSFCH according to the first identity, the method includes at least one of:

scrambling SFCI bits transmitted on a PSFCH by using a first identifier;

scrambling a Cyclic Redundancy Check (CRC) calculated from SFCI bits using a first identity;

using part or all of the first identifier and the SFCI as input bits of CRC calculation;

generating a sequence for bearing SFCI according to the first identification;

generating a demodulation pilot (DMRS) sequence for the PSFCH according to the first identifier;

determining physical resources of the DMRS of the PSFCH according to the first identifier;

and determining the physical resources of the PSFCH according to the first identifier.

Furthermore, according to at least one embodiment of the present invention, when the sequence carrying the SFCI is generated according to the first identifier, the method includes:

and determining the related information of the sequence carrying the SFCI according to the first identification.

Further, in accordance with at least one embodiment of the present invention, the related information is at least one of:

group number of sequences;

a base sequence number;

and (4) cyclic shift.

Further, in accordance with at least one embodiment of the present invention, the method further comprises:

and acquiring the first identifier.

Furthermore, in accordance with at least one embodiment of the present invention, the manner of obtaining the first identifier includes one of:

autonomously generating the first identity;

acquiring the first identifier in a predetermined mode;

acquiring the first identifier in a core network configuration mode;

acquiring the first identifier in a base station configuration mode;

obtaining a first identifier through a mapping relation between the first identifier and first information; the first information includes at least one of a Layer-1destination ID and an Additional Layer-1 ID;

and receiving the first identifier sent by the second communication equipment.

Furthermore, according to at least one embodiment of the present invention, the acquiring the first identifier by the base station configuration includes:

and receiving a first identifier sent by the base station through high-layer signaling or physical layer control signaling.

Furthermore, according to at least one embodiment of the present invention, in the unicast or multicast connection establishment or discovery process, the first identifier sent by the second communication device through higher layer signaling or physical layer signaling is received.

In addition, according to at least one embodiment of the present invention, when the first identifier is obtained through a mapping relationship between the first identifier and the first information, the method further includes obtaining the mapping relationship through one of the following manners:

autonomously generating the mapping relation;

acquiring the mapping relation in a pre-agreed mode;

acquiring the mapping relation in a core network configuration mode;

acquiring the mapping relation in a base station configuration mode;

and receiving the mapping relation sent by the second communication equipment.

Furthermore, according to at least one embodiment of the present invention, the obtaining the mapping relationship by the base station configuration includes:

and receiving the mapping relation sent by the base station through a high-level signaling or a physical-layer control signaling.

Furthermore, according to at least one embodiment of the present invention, in the unicast or multicast connection establishment or discovery process, the mapping relationship sent by the second communication device through a higher layer signaling or a physical layer control signaling is received.

At least one embodiment of the present invention further provides an information transmission method applied to a second communication device, including:

the SFCI is received on the PSFCH according to the first identification.

Further in accordance with at least one embodiment of the present invention, when receiving the SFCI on the PSFCH in accordance with the first identity, the method comprises at least one of:

descrambling by using the first identifier to obtain the received SFCI;

descrambling a CRC calculated from the SFCI bits using the first flag;

checking the received SFCI by using the CRC determined by part or all of the first identifier and the SFCI;

determining a sequence for carrying the SFCI according to the first identifier;

determining a DMRS sequence of the PSFCH according to the first identifier;

Furthermore, according to at least one embodiment of the present invention, when determining the sequence of the bearers SFCI according to the first identifier, the method includes:

group number of sequences;

a base sequence number;

and (4) cyclic shift.

and acquiring the first identifier.

autonomously generating the first identity;

acquiring the first identifier in a predetermined mode;

acquiring the first identifier in a core network configuration mode;

acquiring the first identifier in a base station configuration mode;

obtaining a first identifier through a mapping relation between the first identifier and first information; the first information comprises at least one of Layer-1destination ID and Additional Layer-1 ID;

and receiving a first identification sent by the first communication equipment.

Furthermore, according to at least one embodiment of the present invention, in the unicast or multicast connection establishment or discovery process, the first identifier sent by the first communication device through higher layer signaling or physical layer signaling is received.

autonomously generating the mapping relation;

acquiring the mapping relation in a pre-agreed mode;

acquiring the mapping relation in a core network configuration mode;

acquiring the mapping relation in a base station configuration mode;

and receiving the mapping relation sent by the first communication equipment.

Furthermore, according to at least one embodiment of the present invention, in the unicast or multicast connection establishment or discovery process, the mapping relationship sent by the first communication device through a higher layer signaling or a physical layer control signaling is received.

At least one embodiment of the present invention also provides an information transmission apparatus including:

and the first processing unit is used for sending the SFCI on the PSFCH according to the first identifier.

Furthermore, according to at least one embodiment of the present invention, the first processing unit is specifically configured to perform at least one of the following operations:

scrambling SFCI bits transmitted on a PSFCH by using a first identifier;

scrambling a CRC calculated by SFCI bits by using a first identifier;

generating a sequence for bearing SFCI according to the first identification;

generating a DMRS sequence of the PSFCH according to the first identifier;

Further, in accordance with at least one embodiment of the present invention, the apparatus further comprises:

a first obtaining unit, configured to obtain the first identifier.

Furthermore, according to at least one embodiment of the present invention, the first obtaining unit is specifically configured to perform one of the following operations:

autonomously generating the first identity;

acquiring the first identifier in a predetermined mode;

acquiring the first identifier in a core network configuration mode;

acquiring the first identifier in a base station configuration mode;

and receiving the first identifier sent by the second communication equipment.

Furthermore, according to at least one embodiment of the present invention, the first obtaining unit is further configured to obtain, when the first identifier is obtained through a mapping relationship between the first identifier and the first information, the mapping relationship through one of the following manners:

autonomously generating the mapping relation;

acquiring the mapping relation in a pre-agreed mode;

acquiring the mapping relation in a core network configuration mode;

acquiring the mapping relation in a base station configuration mode;

and receiving the mapping relation sent by the second communication equipment.

and the second processing unit is used for receiving the SFCI on the PSFCH according to the first identification.

Furthermore, according to at least one embodiment of the present invention, the second processing unit is specifically configured to perform at least one of the following operations:

descrambling by using the first identifier to obtain the received SFCI;

descrambling a CRC calculated from the SFCI bits using the first flag;

determining a sequence for carrying the SFCI according to the first identifier;

determining a DMRS sequence of the PSFCH according to the first identifier;

a second obtaining unit, configured to obtain the first identifier.

Furthermore, according to at least one embodiment of the present invention, the second obtaining unit is specifically configured to perform one of the following operations:

autonomously generating the first identity;

acquiring the first identifier in a predetermined mode;

acquiring the first identifier in a core network configuration mode;

acquiring the first identifier in a base station configuration mode;

and receiving a first identification sent by the first communication equipment.

Furthermore, according to at least one embodiment of the present invention, the second obtaining unit is further configured to obtain the mapping relationship between the first identifier and the first information by one of the following methods when the first identifier is obtained:

autonomously generating the mapping relation;

acquiring the mapping relation in a pre-agreed mode;

acquiring the mapping relation in a core network configuration mode;

acquiring the mapping relation in a base station configuration mode;

and receiving the mapping relation sent by the first communication equipment.

At least one embodiment of the present invention provides a first communication device including: a first processor and a first communication interface; wherein,

the first processor is configured to send the SFCI over the PSFCH through the first communication interface according to the first identifier.

Furthermore, in accordance with at least one embodiment of the present invention, the first processor is specifically configured to perform at least one of the following operations:

scrambling SFCI bits transmitted on a PSFCH by using a first identifier;

scrambling a CRC calculated by SFCI bits by using a first identifier;

generating a sequence for bearing SFCI according to the first identification;

generating a DMRS sequence of the PSFCH according to the first identifier;

Further in accordance with at least one embodiment of the present invention, the first processor is further configured to:

and acquiring the first identifier.

Furthermore, in accordance with at least one embodiment of the present invention, the first processor is specifically configured to perform one of the following operations:

autonomously generating the first identity;

acquiring the first identifier in a predetermined mode;

acquiring the first identifier in a core network configuration mode;

acquiring the first identifier in a base station configuration mode;

and receiving a first identifier sent by a second communication device through the first communication interface.

Furthermore, according to at least one embodiment of the present invention, the first processor is further configured to obtain, when the first identifier is obtained through a mapping relationship between the first identifier and the first information, the mapping relationship by one of:

autonomously generating the mapping relation;

acquiring the mapping relation in a pre-agreed mode;

acquiring the mapping relation in a core network configuration mode;

acquiring the mapping relation in a base station configuration mode;

and receiving the mapping relation sent by the second communication equipment through the first communication interface.

At least one embodiment of the present invention also provides a second communication device including: a second processor and a second communication interface; wherein,

and the second processor is used for sending the SFCI on the PSFCH through the second communication interface according to the first identifier.

Furthermore, in accordance with at least one embodiment of the present invention, the second processor is specifically configured to perform at least one of the following operations:

descrambling by using the first identifier to obtain the received SFCI;

descrambling a CRC calculated from the SFCI bits using the first flag;

determining a sequence for carrying the SFCI according to the first identifier;

determining a DMRS sequence of the PSFCH according to the first identifier;

Further in accordance with at least one embodiment of the present invention, the second processor is further configured to:

and acquiring the first identifier.

Furthermore, in accordance with at least one embodiment of the present invention, the second processor is specifically configured to perform one of the following operations:

autonomously generating the first identity;

acquiring the first identifier in a predetermined mode;

acquiring the first identifier in a core network configuration mode;

acquiring the first identifier in a base station configuration mode;

and receiving a first identifier sent by the first communication equipment through the second communication interface.

Furthermore, according to at least one embodiment of the present invention, the second processor is further configured to obtain, when the first identifier is obtained through a mapping relationship between the first identifier and the first information, the mapping relationship by one of:

autonomously generating the mapping relation;

acquiring the mapping relation in a pre-agreed mode;

acquiring the mapping relation in a core network configuration mode;

acquiring the mapping relation in a base station configuration mode;

and receiving the mapping relation sent by the first communication equipment through the second communication interface.

At least one embodiment of the present invention also provides a first communication device including: a first processor and a first memory for storing a computer program capable of running on the processor,

wherein the first processor is configured to execute the steps of any of the above-mentioned methods at the first communication device side when running the computer program.

At least one embodiment of the present invention also provides a second communication device including: a second processor and a second memory for storing a computer program capable of running on the processor,

wherein the second processor is configured to execute the steps of any of the above-mentioned methods at the second communication device side when running the computer program.

At least one embodiment of the present invention also provides a storage medium on which a computer program is stored, which, when executed by a processor, implements the steps of any of the methods described above on the first communication device side, or implements the steps of any of the methods described above on the second communication device side.

According to the information transmission method, the information transmission device, the communication equipment and the storage medium, the first communication equipment sends the SFCI on the PSFCH according to the first identification; and the second communication equipment receives the SFCI on the PSFCH according to the first identifier, and the SFCI is sent according to the first identifier, and other illegal UEs cannot acquire the first identifier, so that the SFCI cannot be acquired, the problem that HARQ-ACK is forged in the V2X communication process is solved, and transmission failure or resource waste is avoided.

Drawings

FIG. 1 is a flow chart illustrating a method for transmitting information according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of an information transmission apparatus according to an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of another information transmission apparatus according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a first communication device according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a second communication device according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of an information transmission system according to an embodiment of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples.

For SFCI, the following explanations apply:

1. under the scene of NR V2X unicast and groupcast, HARQ feedback and HARQ combination can be supported in a physical layer;

2. the PSFCH is used for carrying SFCI;

3. in the unicast scenario, the SFCI may include ACK and NACK;

4. in the groupcast scenario, the SFCI may include only NACK, or may include ACK and NACK.

For the ID related information of the direct link (sidelink) corresponding to the SFCI, the following explanations are provided:

1. the Layer-1destination ID may be explicitly included in the direct link control information (SCI);

2. the following additional information may be included in the SCI:

layer 1source ID (Layer-1source ID); HARQ process number (HARQ process ID); new Data Indicator (NDI); redundancy Version (RV).

Here, the definition for the above ID is as follows:

for physical layer analysis, for a particular packet, the higher layer decides to use unicast, groupcast or broadcast (broadcast) transmission and informs the physical layer. When deciding to use a unicast or groupcast transmission, the User Equipment (UE) has the ability to know the unicast or groupcast session (session) to which the current transmission belongs, and the following information is known to the physical layer:

layer-1destination ID, carried by physical direct link control channel (PSCCH);

an Additional layer-1ID, carried over the PSCCH, is used at least for HARQ combining.

Wherein Layer-1 refers to the physical Layer.

In the V2X communication system, there is a problem that HARQ-ACK is forged because:

since Layer-1destination ID is explicitly included in SCI, and all users are required to demodulate SCI in order to guarantee sensing (decoding) procedure of all UEs (based on SCI decoding), Layer-1destination ID and Additional Layer-1ID are known to all UEs in communication range, and if the SCI includes SFCI resource allocation field or SFCI resource is implicitly determined by physical direct link shared channel (pscch) resource allocation information is included in SCI, PSSCH resource allocation information will also be known to all UEs in communication range. In this case, the SCI is sent by broadcasting and can be monitored by anyone, and the illegal UE may acquire the resource location of the SFCI, so that the illegal UE forges the wrong ACK to cause transmission failure, or forges the wrong NACK to cause retransmission all the time, thereby wasting system resources.

Based on this, in various embodiments of the invention, the SFCI is transmitted on the PSFCH according to the first identity.

The first identifier is associated with the first communication device or the second communication device, or the first identifier is associated with both the first communication device and the second communication device, and the first identifier cannot be known by other communication devices except the first communication device and the second communication device.

By adopting the scheme of the embodiment of the invention, the SFCI is sent according to the first identifier, and other illegal UEs cannot acquire the first identifier, so that the SFCI cannot be acquired, the problem that HARQ-ACK is forged in the V2X communication process is solved, and transmission failure or resource waste is avoided.

The embodiment of the invention provides an information transmission method, which is applied to first communication equipment and comprises the following steps:

the SFCI is transmitted on the PSFCH according to the first identity.

Here, the first identifier is associated with the first communication device or the second communication device, or the first identifier is associated with both the first communication device and the second communication device, and the first identifier is not known by other communication devices except the first communication device and the second communication device.

Specifically, the first identifier may be an identifier related to the first communication device or the second communication device, such as a cell radio network temporary identifier (C-RNTI), that is, used for identifying the first communication device or the second communication device; the first identification may also be used to identify a link between the first communication device and a second communication device. The other UEs are not aware except for the first and second communication devices.

In practice, the first identifier is distinguished from Layer-1destination ID and Additional Layer-1ID because: the Layer-1destination ID is explicitly included in the SCI, and all users are required to demodulate the SCI in order to guarantee the sending process of all users, so the Layer-1destination ID and the Additional Layer-1ID are known to all users in the communication range, not only the first communication device and the second communication device.

In practical application, the first communication device and the second communication device are both sidelink devices. Specifically, the first communication device is a reception device of sidelink data; accordingly, the second communication device is a sending device of sidelink data.

In an embodiment, when the SFCI is transmitted on the PSFCH according to the first identity, the method may include at least one of:

scrambling SFCI bits transmitted on a PSFCH by using a first identifier;

scrambling a CRC (CRC data) calculated from the SFCI bits using a first flag;

generating a sequence for bearing SFCI according to the first identification;

generating a DMRS sequence of the PSFCH according to the first identifier;

In an embodiment, when the sequence carrying the SFCI is generated according to the first identifier, the method includes:

Here, in practical application, the related information may be at least one of the following information:

group number of sequences;

a base sequence number;

and (4) cyclic shift.

That is, the first identifiers are different, and the corresponding related information is different.

In practical application, the relevant information of the DMRS sequence may include at least one of the following: base sequence number, sequence group number, initial sequence, scrambling code ID. The first communication device may determine correlation information of the DMRS sequence according to the first identity, and then generate the DMRS sequence from the determined correlation information of the DMRS sequence. The first identifiers are different, and the related information of the corresponding DMRS sequences is different.

In practical applications, the physical resources of the DMRS may include time-domain resources of the DMRS (e.g., symbols occupied by the DMRS in slots where the PSFCH is located), and frequency-domain resources of the DMRS (e.g., Physical Resource Blocks (PRBs) occupied by the DMRS on the symbols, where the occupied PRBs are related to DMRS types (types) and Code Division Multiplexing (CDM) groups (groups)). The determining of the physical resource of the DMRS of the PSFCH according to the first identifier may be determining of the time domain resource and the frequency domain resource of the DMRS of the PSFCH according to the first identifier. The first identifiers are different, and the physical resources of the corresponding DMRSs are different.

And determining the physical resource of the PSFCH according to the first identifier, that is, determining the time domain resource and the frequency domain resource of the PSFCH according to the first identifier, such as the timing relationship between the PSFCH and the PSSCH, the PRBs occupied by the PSFCH, and the like. The first identifiers are different, and the physical resources of the corresponding PSFCHs are different.

In actual application, the first communication device further needs to acquire the first identifier.

In practical application, the manner of obtaining the first identifier may include one of the following:

autonomously generating the first identity;

acquiring the first identifier in a predetermined mode;

acquiring the first identifier in a core network configuration mode;

acquiring the first identifier in a base station configuration mode;

and receiving the first identifier sent by the second communication equipment.

When the first identifier is autonomously generated, in practical application, any autonomously generated algorithm may be adopted, for example, random generation is adopted, and the embodiment of the present invention does not limit this.

For acquiring the first identifier in a pre-agreed manner, the first communication device and the second communication device may agree with the first identifier in advance during actual application.

In an embodiment, acquiring the first identifier by a base station configuration method includes:

That is, the base station configures the first identifier for the first communication device through higher layer signaling or physical layer control signaling.

The first identifier is obtained through the mapping relation between the first identifier and the first information, and in practical application, the first communication device can obtain the first information through demodulating SCI, and then determine the first identifier by using the mapping relation.

In actual application, the first communication device further needs to acquire the mapping relationship.

Based on this, in an embodiment, when the first identifier is obtained through the mapping relationship between the first identifier and the first information, the method further includes obtaining the mapping relationship through one of the following manners:

autonomously generating the mapping relation;

acquiring the mapping relation in a pre-agreed mode;

acquiring the mapping relation in a core network configuration mode;

acquiring the mapping relation in a base station configuration mode;

and receiving the mapping relation sent by the second communication equipment.

Here, for the mapping relationship generated autonomously, in practical application, any algorithm generated autonomously may be adopted, for example, the mapping relationship is generated in a random manner, and the embodiment of the present invention does not limit this.

For obtaining the mapping relationship in a pre-agreed manner, the first communication device and the second communication device may agree the mapping relationship in advance during actual application.

In an embodiment, the obtaining the mapping relationship through a base station configuration includes:

That is, the base station configures the mapping relationship for the first communication device through a higher layer signaling or a physical layer control signaling.

For receiving the mapping relationship sent by the second communication device, in an actual application, the mapping relationship sent by the second communication device through sidelink high-level signaling or physical layer signaling may be received in a unicast or multicast connection establishment or discovery process.

Here, the higher layer signaling may be Radio Resource Control (RRC) signaling or Medium Access Control (MAC) signaling, etc.

In practical application, the second communication device may obtain the mapping relationship through core network configuration or base station configuration, and then send the mapping relationship to the first communication device.

In addition, in order to ensure the security of the transmission process (ensure the privacy of the mapping relationship), the transmission process is subjected to the security encryption or authentication of the second communication device and the first communication device to ensure that other communication devices cannot know.

Based on this, in an embodiment, the receiving the mapping relationship sent by the second communication device includes:

receiving the encrypted mapping relation sent by the second communication equipment; carrying out decryption processing on the encrypted mapping relation;

or,

and authenticating the received mapping relation sent by the second communication equipment, and obtaining the mapping relation after the authentication is successful.

For receiving the first identifier sent by the second communication device, in actual application, the first identifier sent by the second communication device through sidelink high-layer signaling or physical layer signaling may be received in the unicast or multicast connection establishment or discovery process.

Wherein, the higher layer signaling may be RRC signaling or MAC signaling.

In practical application, the second communication device may obtain the first identifier through core network configuration or base station configuration, and then send the first identifier to the first communication device.

In addition, in order to ensure the security of the transmission process (ensure the privacy of the first identifier), the transmission process is encrypted or authenticated securely by the second communication device and the first communication device to ensure that other communication devices cannot know the transmission process.

Based on this, in an embodiment, the receiving the first identifier sent by the second communication device includes:

receiving an encrypted first identifier sent by the second communication device; carrying out decryption processing on the encrypted first identifier;

or,

and authenticating the received first identifier sent by the second communication equipment, and obtaining the first identifier after the authentication is successful.

Correspondingly, an embodiment of the present invention further provides an information transmission method, which is applied to a second communication device, and includes:

the SFCI is received on the PSFCH according to the first identification.

Wherein, in an embodiment, when receiving the SFCI on the PSFCH according to the first identifier, the method includes at least one of:

descrambling by using the first identifier to obtain the received SFCI;

descrambling a CRC calculated from the SFCI bits using the first flag; checking the received SFCI by using the CRC, and determining to obtain the SFCI after the checking is successful;

checking the received SFCI by using the CRC determined by the part or all of the first identifier and the SFCI, and determining to obtain the SFCI after successful checking;

determining a sequence for carrying the SFCI according to the first identifier;

determining a DMRS sequence of the PSFCH according to the first identifier;

It should be noted that: in practical application, the specific operation of the second communication device corresponds to the operation of the first communication device, and specifically, when SFCI bits transmitted by the first communication device on the PSFCH are scrambled by using a first identifier, the second communication device descrambles by using the first identifier to obtain a received SFCI; when the first communications device scrambles a CRC computed from SFCI bits using a first identity, the second communications device is to descramble the CRC computed from SFCI bits using the first identity; checking the received SFCI by using the CRC, and determining to obtain the SFCI after the checking is successful; when the first communication equipment uses part or all of the first identifier and the SFCI as input bits for CRC calculation, the second communication equipment checks the received SFCI by using the CRC determined by the part or all of the first identifier and the SFCI, and determines to obtain the SFCI after the checking is successful; when the first communication equipment generates a sequence for bearing SFCI according to the first identification, the second communication equipment determines the sequence for bearing SFCI according to the first identification; when the first communication equipment generates the DMRS sequence of the PSFCH according to the first identifier, the second communication equipment determines the DMRS sequence of the PSFCH according to the first identifier so as to perform subsequent processing; when the first communication device determines the physical resource of the DMRS of the PSFCH according to the first identifier, the second communication device determines the physical resource of the DMRS of the PSFCH according to the first identifier for subsequent processing; and when the first communication equipment determines the physical resource of the PSFCH according to the first identifier, the second communication equipment determines the physical resource of the PSFCH according to the first identifier so as to perform subsequent processing.

In an embodiment, when determining the sequence of the SFCI according to the first identifier, the method includes:

group number of sequences;

a base sequence number;

and (4) cyclic shift.

Of course, in practical applications, the related information determined by the second communication device is the same as the related information calculated by the first communication device.

In actual application, the second communication device further needs to acquire the first identifier.

autonomously generating the first identity;

acquiring the first identifier in a predetermined mode;

acquiring the first identifier in a core network configuration mode;

acquiring the first identifier in a base station configuration mode;

and receiving a first identification sent by the first communication equipment.

Here, it should be noted that: the manner in which the second communication device acquires the first identifier corresponds to the manner in which the first communication device acquires the first identifier, and, in particular,

when the first communication device autonomously generates the first identifier, the second communication device autonomously generates the first identifier; of course, the autonomous generation algorithm employed by the first communication device and the second communication device to generate the first identity is the same.

When the first communication device acquires the first identifier in a pre-agreed manner, the second communication device also acquires the first identifier in a pre-agreed manner.

When the first communication device acquires the first identifier in a core network configuration manner, the second communication device also acquires the first identifier in a core network configuration manner.

When the first communication device acquires the first identifier in a base station configuration manner, the second communication device also acquires the first identifier in a base station configuration manner.

When the first communication device obtains the first identifier through the mapping relationship between the first identifier and the first information, the second communication device also obtains the first identifier through the mapping relationship between the first identifier and the first information.

When the first communication device receives a first identifier sent by a second communication device, the second communication device itself first obtains the first identifier, such as configured by a core network or a base station, and sends the first identifier to the first communication device.

When the second communication device receives the first identifier sent by the first communication device, the first communication device itself first obtains the first identifier, such as configured by a core network or a base station, and sends the first identifier to the second communication device.

In an embodiment, the acquiring the first identifier by the base station configuration includes:

That is, the base station configures the first identifier for the second communication device through a higher layer signaling or a physical layer control signaling.

The first identifier is obtained through the mapping relation between the first identifier and the first information, and in practical application, the second communication device can obtain the first information through demodulating SCI, and then determine the first identifier by using the mapping relation.

In actual application, the second communication device further needs to acquire the mapping relationship.

autonomously generating the mapping relation;

acquiring the mapping relation in a pre-agreed mode;

acquiring the mapping relation in a core network configuration mode;

acquiring the mapping relation in a base station configuration mode;

and receiving the mapping relation sent by the first communication equipment.

The method for acquiring the mapping relation by the second communication equipment is similar to the method for acquiring the first identifier, and the method for acquiring the mapping relation by the second communication equipment corresponds to the method for acquiring the first identifier by the first communication equipment; in particular, the amount of the solvent to be used,

when the first communication device autonomously generates the mapping relation, the second communication device autonomously generates the mapping relation; of course, the autonomous generation algorithm used by the first communication device and the second communication device to generate the mapping relationship is the same.

When the first communication device acquires the mapping relationship in a pre-agreed manner, the second communication device also acquires the mapping relationship in a pre-agreed manner.

When the first communication device obtains the mapping relationship in a core network configuration manner, the second communication device also obtains the mapping relationship in a core network configuration manner.

When the first communication device obtains the mapping relationship in a base station configuration manner, the second communication device also obtains the mapping relationship in a base station configuration manner.

When the first communication device receives the mapping relationship sent by the second communication device, the second communication device itself first obtains the mapping relationship, such as configured by a core network or a base station, and sends the mapping relationship to the first communication device.

When the second communication device receives the mapping relationship sent by the first communication device, the first communication device itself first obtains the mapping relationship, such as configured by a core network or a base station, and sends the mapping relationship to the second communication device.

For receiving the mapping relationship sent by the first communication device, in an actual application, the mapping relationship sent by the first communication device through sidelink high-level signaling or physical layer signaling may be received in a unicast or multicast connection establishment or discovery process.

Here, the higher layer signaling may be RRC signaling or MAC signaling, etc.

In practical application, the first communication device may obtain the mapping relationship through core network configuration or base station configuration, and then send the mapping relationship to the second communication device.

Based on this, in an embodiment, the receiving the mapping relationship sent by the first communication device includes:

receiving the encrypted mapping relation sent by the first communication equipment; carrying out decryption processing on the encrypted mapping relation;

or,

and authenticating the received mapping relation sent by the first communication equipment, and obtaining the mapping relation after the authentication is successful.

For receiving the first identifier sent by the first communication device, in actual application, the first identifier sent by the first communication device through sidelink high-layer signaling or physical layer signaling may be received in a unicast or multicast connection establishment or discovery process.

Wherein, the higher layer signaling may be RRC signaling or MAC signaling.

In practical application, the first communication device may obtain the first identifier through core network configuration or base station configuration, and then send the first identifier to the second communication device.

Based on this, in an embodiment, the receiving the first identifier sent by the first communication device includes:

receiving an encrypted first identifier sent by the first communication device; carrying out decryption processing on the encrypted first identifier;

or,

and authenticating the received first identifier sent by the first communication equipment, and obtaining the first identifier after the authentication is successful.

An embodiment of the present invention provides an information transmission method, as shown in fig. 1, the method includes:

step 101: the first communication equipment transmits the SFCI on the PSFCH according to the first identification;

step 102: the second communication device receives the SFCI on the PSFCH according to the first identity.

It should be noted that: the specific processing procedures of the first communication device and the second communication device have been described in detail above, and are not described herein again.

According to the information transmission method provided by the embodiment of the invention, the first communication equipment sends the SFCI on the PSFCH according to the first identifier; and the second communication equipment receives the SFCI on the PSFCH according to the first identifier, and the SFCI is sent according to the first identifier, and other illegal UEs cannot acquire the first identifier, so that the SFCI cannot be acquired, the problem that HARQ-ACK is forged in the V2X communication process is solved, and transmission failure or resource waste is avoided.

The present invention will be described in further detail with reference to the following application examples.

Application embodiment 1

In this embodiment, in a unicast/multicast connection establishment procedure or a discovery procedure, a receiver (receiver) (receiving device of sidelink data) sends ID information (i.e. a first identifier) specific to the receiver (receiver) (sending device of sidelink data) or a mapping relationship between the first identifier and a Layer-1destination ID to a transmitter (transmitter) (sending device of sidelink data) through sidelink high-Layer signaling (such as RRC or MAC signaling) or physical Layer signaling.

The manner of obtaining the first identifier or the mapping relationship by the receiver may be that the base station allocates ID information specific to the receiver (receiver) (receiving device of sidelink data) through high-level signaling configuration or physical-level control signaling or the mapping relationship between the first identifier and Layer-1destination ID; or the receiver can autonomously generate the special ID information or the mapping relation between the first identifier and the Layer-1destination ID.

Application example two

In this embodiment of the application, in a unicast/multicast connection establishment procedure or a discovery procedure, a transmitter (sending device of sidelink data) sends, through sidelink high-Layer signaling (such as RRC or MAC signaling) or physical Layer signaling, ID information (i.e., a first identifier) specific to a receiver (receiving device of sidelink data) or a mapping relationship between the first identifier and a Layer-1destination ID to the receiver.

The manner of obtaining the first identifier or the mapping relationship by the transmitter may be: a base station allocates first identification information of a receiver needing unicast/multicast communication for a transmitter through high-level signaling configuration or physical-level control signaling, or a mapping relation between the first identification and Layer-1destination ID; or the transmitter can autonomously generate the first identification information of the receiver which needs to perform unicast/multicast communication or the mapping relation between the first identification and the Layer-1destination ID.

Application example three

In the present application embodiment, how to transmit the SFCI according to the first identifier is described. The specific operation can involve the following aspects:

in a first aspect, encoded SFCI bits may be scrambled using a first identity. Specifically, assuming that the SFCI is encoded with 20 bits and the first flag is 10 bits, some positions of the first flag are padded with zero padding to 20 bits, and bit-level scrambling is performed on the bits that are encoded with the SFCI.

In a second aspect, the CRC may be scrambled with the first identity if the SFCI uses a CRC check.

In a third aspect, part or all of the first flag may be arranged with the SFCI, for example, the SFCI and the first flag may be arranged in a certain manner (e.g., the first flag + the SFCI, or the SFCI + the first flag) as input bits for CRC calculation, and the processes of code fast division, coding, rate matching, and the like may be performed together.

In a fourth aspect, a sequence carrying SFCI may be generated according to the first identity; specifically, the related information (e.g., group number, base sequence number, cyclic shift, etc.) of the sequence carrying the SFCI is determined according to the first identifier, and then the sequence carrying the SFCI is generated from the determined related information.

In a fifth aspect, the DMRS sequence for the PSFCH may be generated based on the first identity; specifically, the relevant information (such as base sequence number, sequence group number, initial sequence, scrambling code ID, etc.) of the DMRS sequence is determined according to the first identifier, and then the DMRS sequence is generated from the determined relevant information of the DMRS sequence. The first identifiers are different, and the related information of the corresponding DMRS sequences is different.

In a sixth aspect, the physical resource (time-frequency domain resource) of the DMRS for the PSFCH may be determined from the first identity;

in a seventh aspect, the physical resources (time-frequency domain resources) of the PSFCH may be determined from the first identity.

It can be seen from the above description that the embodiment of the present invention can carry the information of the receiver related ID when sending the SFCI, thereby solving the problem that HARQ-ACK is forged in the unicast and groupcast communication processes, and avoiding transmission failure or resource waste.

In order to implement the method according to the embodiment of the present invention, an information transmission apparatus is further provided in the embodiment of the present invention, and as shown in fig. 2, the apparatus includes:

a first processing unit 21, configured to send the SFCI on the PSFCH according to the first identifier.

In an embodiment, the first processing unit 21 is specifically configured to perform at least one of the following operations:

scrambling SFCI bits transmitted on a PSFCH by using a first identifier;

scrambling a CRC calculated by SFCI bits by using a first identifier;

generating a sequence for bearing SFCI according to the first identification;

generating a DMRS sequence of the PSFCH according to the first identifier;

In an embodiment, the first processing unit 21 is configured to determine, according to the first identifier, related information of a sequence carrying the SFCI when the sequence carrying the SFCI is generated according to the first identifier.

In an embodiment, as shown in fig. 2, the apparatus may further include:

a first obtaining unit 22, configured to obtain the first identifier.

In an embodiment, the first obtaining unit 22 is specifically configured to perform one of the following operations:

autonomously generating the first identity;

acquiring the first identifier in a predetermined mode;

acquiring the first identifier in a core network configuration mode;

acquiring the first identifier in a base station configuration mode;

and receiving the first identifier sent by the second communication equipment.

In an embodiment, the first obtaining unit 22 is further configured to obtain, when the first identifier is obtained through a mapping relationship between the first identifier and the first information, the mapping relationship through one of the following manners:

autonomously generating the mapping relation;

acquiring the mapping relation in a pre-agreed mode;

acquiring the mapping relation in a core network configuration mode;

acquiring the mapping relation in a base station configuration mode;

and receiving the mapping relation sent by the second communication equipment.

In practical applications, the first processing unit 21 and the first obtaining unit 22 may be implemented by a processor in the information transmission device in combination with a communication interface.

In order to implement the method on the second communication device side in the embodiment of the present invention, an embodiment of the present invention further provides an information transmission apparatus, which is disposed on the second communication device, and as shown in fig. 3, the apparatus includes:

a second processing unit 31, configured to receive the SFCI on the PSFCH according to the first identifier.

In an embodiment, the second processing unit 31 is specifically configured to perform at least one of the following operations:

descrambling by using the first identifier to obtain the received SFCI;

descrambling a CRC calculated from the SFCI bits using the first flag;

determining a sequence for carrying the SFCI according to the first identifier;

determining a DMRS sequence of the PSFCH according to the first identifier;

In an embodiment, the second processing unit 31 is configured to determine, according to the first identifier, related information of a sequence carrying the SFCI when determining the sequence carrying the SFCI according to the first identifier.

In an embodiment, as shown in fig. 3, the apparatus may further include:

a second obtaining unit 32, configured to obtain the first identifier.

In an embodiment, the second obtaining unit 32 is specifically configured to perform one of the following operations:

autonomously generating the first identity;

acquiring the first identifier in a predetermined mode;

acquiring the first identifier in a core network configuration mode;

acquiring the first identifier in a base station configuration mode;

and receiving a first identification sent by the first communication equipment.

In an embodiment, the second obtaining unit 32 is further configured to, when the first identifier is obtained through a mapping relationship between the first identifier and the first information, obtain the mapping relationship through one of the following manners:

autonomously generating the mapping relation;

acquiring the mapping relation in a pre-agreed mode;

acquiring the mapping relation in a core network configuration mode;

acquiring the mapping relation in a base station configuration mode;

and receiving the mapping relation sent by the first communication equipment.

In practical applications, the second processing unit 31 and the second obtaining unit 32 may be implemented by a processor in the information transmission device in combination with a communication interface.

It should be noted that: in the information transmission device provided in the above embodiment, only the division of the program modules is exemplified when information is transmitted, and in practical applications, the processing distribution may be completed by different program modules according to needs, that is, the internal structure of the device may be divided into different program modules to complete all or part of the processing described above. In addition, the information transmission apparatus and the information transmission method provided by the above embodiments belong to the same concept, and specific implementation processes thereof are detailed in the method embodiments and are not described herein again.

Based on the hardware implementation of the program module, and in order to implement the method on the first communication device side in the embodiment of the present invention, an embodiment of the present invention further provides a first communication device, as shown in fig. 4, where the first communication device 40 includes:

a first communication interface 41 capable of performing information interaction with a second communication device;

and the first processor 42 is connected with the first communication interface 41 to implement information interaction with the second communication device, and is configured to execute the method provided by one or more technical solutions of the first communication device side when running a computer program. And the computer program is stored on the first memory 43.

In particular, the first processor 42 is configured to transmit the SFCI over the PSFCH through the first communication interface 41 according to the first identifier.

In an embodiment, the first processor 42 is specifically configured to perform at least one of the following operations:

scrambling SFCI bits transmitted on a PSFCH by using a first identifier;

scrambling a CRC calculated by SFCI bits by using a first identifier;

generating a sequence for bearing SFCI according to the first identification;

generating a DMRS sequence of the PSFCH according to the first identifier;

In an embodiment, the first processor 42 is configured to determine, when generating the sequence carrying the SFCI according to the first identifier, related information of the sequence carrying the SFCI according to the first identifier.

In one embodiment, the first processor 42 is further configured to:

and acquiring the first identifier.

In an embodiment, the first processor 42 is specifically configured to perform one of the following operations:

autonomously generating the first identity;

acquiring the first identifier in a predetermined mode;

acquiring the first identifier in a core network configuration mode;

acquiring the first identifier in a base station configuration mode;

In an embodiment, the first processor 42 is further configured to obtain, when the first identifier is obtained through a mapping relationship between the first identifier and the first information, the mapping relationship by one of:

autonomously generating the mapping relation;

acquiring the mapping relation in a pre-agreed mode;

acquiring the mapping relation in a core network configuration mode;

acquiring the mapping relation in a base station configuration mode;

receiving the mapping relation sent by the second communication device through the first communication interface 41.

It should be noted that: the specific processing procedures of the first processor 42 and the first communication interface 41 are detailed in the method embodiment, and are not described herein again.

Of course, in practice, the various components of the first communication device 40 are coupled together by a bus system 44. It will be appreciated that the bus system 44 is used to enable communications among the components. The bus system 44 includes a power bus, a control bus, and a status signal bus in addition to the data bus. For clarity of illustration, however, the various buses are labeled as bus system 44 in fig. 4.

The first memory 43 in the embodiment of the present invention is used to store various types of data to support the operation of the first communication device 40. Examples of such data include: any computer program for operating on the first communication device 40.

The method disclosed in the above embodiments of the present invention may be applied to the first processor 42, or implemented by the first processor 42. The first processor 42 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be performed by integrated logic circuits of hardware or instructions in the form of software in the first processor 42. The first Processor 42 may be a general purpose Processor, a Digital Signal Processor (DSP), or other programmable logic device, discrete gate or transistor logic device, discrete hardware components, etc. The first processor 42 may implement or perform the methods, steps and logic blocks disclosed in the embodiments of the present invention. A general purpose processor may be a microprocessor or any conventional processor or the like. The steps of the method disclosed by the embodiment of the invention can be directly implemented by a hardware decoding processor, or can be implemented by combining hardware and software modules in the decoding processor. The software module may be located in a storage medium located in the first memory 43, and the first processor 42 reads the information in the first memory 43 and performs the steps of the foregoing method in combination with its hardware.

In an exemplary embodiment, the first communication Device 40 may be implemented by one or more Application Specific Integrated Circuits (ASICs), DSPs, Programmable Logic Devices (PLDs), Complex Programmable Logic Devices (CPLDs), Field Programmable Gate Arrays (FPGAs), general purpose processors, controllers, Micro Controllers (MCUs), microprocessors (microprocessors), or other electronic components for performing the aforementioned methods.

Based on the hardware implementation of the program modules, and in order to implement the method on the second communication device side in the embodiment of the present invention, as shown in fig. 5, the second communication device 50 includes:

a second communication interface 51 capable of performing information interaction with the first communication device;

and the second processor 52 is connected to the second communication interface 51 to implement information interaction with the first communication device, and is configured to execute the method provided by one or more technical solutions of the second communication device side when running a computer program. And the computer program is stored on the second memory 53.

In particular, the second processor 52 is configured to send the SFCI over the PSFCH through the second communication interface 51 according to the first identifier.

In an embodiment, the second processor 52 is specifically configured to perform at least one of the following operations:

descrambling by using the first identifier to obtain the received SFCI;

descrambling a CRC calculated from the SFCI bits using the first flag;

determining a sequence for carrying the SFCI according to the first identifier;

determining a DMRS sequence of the PSFCH according to the first identifier;

In an embodiment, the second processor 52 is configured to determine, according to the first identifier, related information of a sequence carrying the SFCI when determining the sequence carrying the SFCI according to the first identifier.

In one embodiment, the second processor 52 is further configured to:

and acquiring the first identifier.

In an embodiment, the second processor 52 is specifically configured to perform one of the following operations:

autonomously generating the first identity;

acquiring the first identifier in a predetermined mode;

acquiring the first identifier in a core network configuration mode;

acquiring the first identifier in a base station configuration mode;

the first identifier sent by the first communication device is received through the second communication interface 51.

In an embodiment, the second processor 52 is further configured to, when obtaining the first identifier, obtain the mapping relationship through one of the following manners:

autonomously generating the mapping relation;

acquiring the mapping relation in a pre-agreed mode;

acquiring the mapping relation in a core network configuration mode;

acquiring the mapping relation in a base station configuration mode;

It should be noted that: the specific processing procedures of the second processor 52 and the second communication interface 51 are described in detail in the method embodiment, and are not described herein again.

Of course, in practice, the various components of the second communication device 50 are coupled together by a bus system 54. It will be appreciated that the bus system 54 is used to enable communications among the components. The bus system 54 includes a power bus, a control bus, and a status signal bus in addition to the data bus. For clarity of illustration, however, the various buses are labeled as bus system 54 in fig. 5.

The second memory 53 in the embodiment of the present invention is used to store various types of data to support the operation of the second communication device 50. Examples of such data include: any computer program for operating on the second communication device 50.

The method disclosed in the above embodiments of the present invention may be applied to the second processor 52, or implemented by the second processor 52. The second processor 52 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be implemented by integrated logic circuits of hardware or instructions in the form of software in the second processor 52. The second processor 52 described above may be a general purpose processor, a DSP, or other programmable logic device, discrete gate or transistor logic device, discrete hardware components, or the like. The second processor 52 may implement or perform the methods, steps and logic blocks disclosed in the embodiments of the present invention. A general purpose processor may be a microprocessor or any conventional processor or the like. The steps of the method disclosed by the embodiment of the invention can be directly implemented by a hardware decoding processor, or can be implemented by combining hardware and software modules in the decoding processor. The software module may be located in a storage medium located in the second memory 53, and the second processor 52 reads the information in the second memory 53 and, in conjunction with its hardware, performs the steps of the foregoing method.

In an exemplary embodiment, the second communication device 50 may be implemented by one or more ASICs, DSPs, PLDs, CPLDs, FPGAs, general-purpose processors, controllers, MCUs, microprocessors, or other electronic components for performing the aforementioned methods.

It will be appreciated that the memories (first memory 43, second memory 53) of embodiments of the present invention may be either volatile memory or non-volatile memory, and may include both volatile and non-volatile memory. The nonvolatile Memory may be a Read Only Memory (ROM), a Programmable Read Only Memory (PROM), an Erasable Programmable Read-Only Memory (EPROM), an Electrically Erasable Programmable Read-Only Memory (EEPROM), a magnetic random access Memory (FRAM), a Flash Memory (Flash Memory), a magnetic surface Memory, an optical Disc, or a Compact Disc Read-Only Memory (CD-ROM); the magnetic surface storage may be disk storage or tape storage. Volatile Memory can be Random Access Memory (RAM), which acts as external cache Memory. By way of illustration and not limitation, many forms of RAM are available, such as Static Random Access Memory (SRAM), Synchronous Static Random Access Memory (SSRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic Random Access Memory (SDRAM), Double Data Rate Synchronous Dynamic Random Access Memory (DDRSDRAM, Double Data Synchronous Random Access Memory), Enhanced Synchronous Dynamic Random Access Memory (ESDRAM, Enhanced Synchronous Dynamic Random Access Memory), Synchronous joint Dynamic Random Access Memory (SLDRAM, SyncLinkDynamic Random Access Memory), Direct Memory (DRmb Random Access Memory). The described memory for embodiments of the present invention is intended to comprise, without being limited to, these and any other suitable types of memory.

In order to implement the method according to the embodiment of the present invention, an embodiment of the present invention further provides an information transmission system, as shown in fig. 6, where the system includes:

a first communication device 61, configured to send the SFCI on the PSFCH according to the first identifier;

and a second communication device 62 for receiving the SFCI on the PSFCH according to the first identity.

It should be noted that: the specific processing procedures of the first communication device 61 and the second communication device 62 have been described in detail above, and are not described in detail here.

In an exemplary embodiment, the present invention further provides a storage medium, specifically a computer-readable storage medium, for example, including a first memory 43 storing a computer program, which is executable by the first processor 42 of the first communication device 40 to complete the steps of the aforementioned terminal-side method. For example, the second memory 53 stores a computer program which can be executed by the second processor 52 of the second communication device 50 to perform the steps of the terminal side method as described above. The computer readable storage medium may be Memory such as FRAM, ROM, PROM, EPROM, EEPROM, Flash Memory, magnetic surface Memory, optical disk, or CD-ROM.

It should be noted that: "first," "second," and the like are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.

In addition, the technical solutions described in the embodiments of the present invention may be arbitrarily combined without conflict.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.

Claims

1. An information transmission method applied to a first communication device includes:

and sending direct link feedback control information (SFCI) on a physical direct link feedback channel (PSFCH) according to the first identifier.

2. The method of claim 1, wherein when the SFCI is transmitted on the PSFCH according to the first identity, the method comprises at least one of:

scrambling SFCI bits transmitted on a PSFCH by using a first identifier;

scrambling a Cyclic Redundancy Check (CRC) calculated by SFCI bits by using a first identifier;

generating a sequence for bearing SFCI according to the first identification;

generating a DMRS sequence of the demodulation pilot frequency of the PSFCH according to the first identifier;

3. The method of claim 2, wherein when the sequence for carrying the SFCI is generated according to the first identifier, the method comprises:

4. The method of claim 3, wherein the related information is at least one of:

group number of sequences;

a base sequence number;

and (4) cyclic shift.

5. The method of claim 1, further comprising:

and acquiring the first identifier.

6. The method of claim 5, wherein obtaining the first identifier comprises one of:

autonomously generating the first identity;

acquiring the first identifier in a predetermined mode;

acquiring the first identifier in a core network configuration mode;

acquiring the first identifier in a base station configuration mode;

obtaining a first identifier through a mapping relation between the first identifier and first information; the first information includes at least one of an ID Layer-1destination ID of the Layer-1 mesh and an Additional Layer-1 ID;

and receiving the first identifier sent by the second communication equipment.

7. The method of claim 6, wherein the obtaining the first identifier by means of base station configuration comprises:

8. The method according to claim 6, wherein the first identifier sent by the second communication device through higher layer signaling or physical layer signaling is received during unicast or multicast connection establishment or discovery.

9. The method according to claim 6, wherein when the first identifier is obtained through the mapping relationship between the first identifier and the first information, the method further comprises obtaining the mapping relationship through one of the following methods:

autonomously generating the mapping relation;

acquiring the mapping relation in a pre-agreed mode;

acquiring the mapping relation in a core network configuration mode;

acquiring the mapping relation in a base station configuration mode;

and receiving the mapping relation sent by the second communication equipment.

10. The method of claim 9, wherein the obtaining the mapping relationship by means of base station configuration comprises:

11. The method according to claim 9, wherein the mapping relation sent by the second communication device through higher layer signaling or physical layer control signaling is received during unicast or multicast connection establishment or discovery.

12. An information transmission method applied to a second communication device includes:

the SFCI is received on the PSFCH according to the first identification.

13. The method of claim 12, wherein, when receiving the SFCI on the PSFCH according to the first identity, the method comprises at least one of:

descrambling by using the first identifier to obtain the received SFCI;

descrambling a CRC calculated from the SFCI bits using the first flag;

determining a sequence for carrying the SFCI according to the first identifier;

determining a DMRS sequence of the PSFCH according to the first identifier;

14. The method of claim 13, wherein when determining the sequence of the SFCI according to the first identifier, the method comprises:

15. The method of claim 14, wherein the related information is at least one of:

group number of sequences;

a base sequence number;

and (4) cyclic shift.

16. The method of claim 12, further comprising:

and acquiring the first identifier.

17. The method of claim 16, wherein obtaining the first identifier comprises one of:

autonomously generating the first identity;

acquiring the first identifier in a predetermined mode;

acquiring the first identifier in a core network configuration mode;

acquiring the first identifier in a base station configuration mode;

and receiving a first identification sent by the first communication equipment.

18. The method of claim 17, wherein the obtaining the first identifier by means of base station configuration comprises:

19. The method according to claim 17, wherein the first identifier sent by the first communication device through higher layer signaling or physical layer signaling is received during unicast or multicast connection establishment or discovery.

20. The method according to claim 17, wherein when the first identifier is obtained through a mapping relationship between the first identifier and the first information, the method further comprises obtaining the mapping relationship through one of:

autonomously generating the mapping relation;

acquiring the mapping relation in a pre-agreed mode;

acquiring the mapping relation in a core network configuration mode;

acquiring the mapping relation in a base station configuration mode;

and receiving the mapping relation sent by the first communication equipment.

21. The method of claim 20, wherein the obtaining the mapping relationship by means of base station configuration comprises:

22. The method according to claim 20, wherein the mapping relation sent by the first communication device through higher layer signaling or physical layer control signaling is received in a unicast or multicast connection establishment or discovery process.

23. An information transmission apparatus, comprising:

24. The apparatus according to claim 23, wherein the first processing unit is specifically configured to perform at least one of the following operations:

scrambling SFCI bits transmitted on a PSFCH by using a first identifier;

scrambling a CRC calculated by SFCI bits by using a first identifier;

generating a sequence for bearing SFCI according to the first identification;

generating a DMRS sequence of the PSFCH according to the first identifier;

25. The apparatus of claim 23, further comprising:

a first obtaining unit, configured to obtain the first identifier.

26. The apparatus according to claim 25, wherein the first obtaining unit is specifically configured to perform one of the following operations:

autonomously generating the first identity;

acquiring the first identifier in a predetermined mode;

acquiring the first identifier in a core network configuration mode;

acquiring the first identifier in a base station configuration mode;

and receiving the first identifier sent by the second communication equipment.

27. The apparatus of claim 26, wherein the first obtaining unit is further configured to obtain, when the first identifier is obtained through a mapping relationship between the first identifier and the first information, the mapping relationship by one of:

autonomously generating the mapping relation;

acquiring the mapping relation in a pre-agreed mode;

acquiring the mapping relation in a core network configuration mode;

acquiring the mapping relation in a base station configuration mode;

and receiving the mapping relation sent by the second communication equipment.

28. An information transmission apparatus, comprising:

29. The apparatus according to claim 28, wherein the second processing unit is specifically configured to perform at least one of the following operations:

descrambling by using the first identifier to obtain the received SFCI;

descrambling a CRC calculated from the SFCI bits using the first flag;

determining a sequence for carrying the SFCI according to the first identifier;

determining a DMRS sequence of the PSFCH according to the first identifier;

30. The apparatus of claim 28, further comprising:

a second obtaining unit, configured to obtain the first identifier.

31. The apparatus according to claim 30, wherein the second obtaining unit is specifically configured to perform one of the following operations:

autonomously generating the first identity;

acquiring the first identifier in a predetermined mode;

acquiring the first identifier in a core network configuration mode;

acquiring the first identifier in a base station configuration mode;

and receiving a first identification sent by the first communication equipment.

32. The apparatus of claim 31, wherein the second obtaining unit is further configured to, when obtaining the first identifier through a mapping relationship between the first identifier and the first information, obtain the mapping relationship through one of:

autonomously generating the mapping relation;

acquiring the mapping relation in a pre-agreed mode;

acquiring the mapping relation in a core network configuration mode;

acquiring the mapping relation in a base station configuration mode;

and receiving the mapping relation sent by the first communication equipment.

33. A first communications device, comprising: a first processor and a first communication interface; wherein,

34. The communications device of claim 33, wherein the first processor is specifically configured to perform at least one of the following:

scrambling SFCI bits transmitted on a PSFCH by using a first identifier;

scrambling a CRC calculated by SFCI bits by using a first identifier;

generating a sequence for bearing SFCI according to the first identification;

generating a DMRS sequence of the PSFCH according to the first identifier;

35. The communications device of claim 33, wherein the first processor is further configured to:

and acquiring the first identifier.

36. The communications device of claim 35, wherein the first processor is specifically configured to perform one of the following:

autonomously generating the first identity;

acquiring the first identifier in a predetermined mode;

acquiring the first identifier in a core network configuration mode;

acquiring the first identifier in a base station configuration mode;

37. The communications device of claim 36, wherein the first processor is further configured to obtain the mapping relationship between the first identifier and the first information by one of:

autonomously generating the mapping relation;

acquiring the mapping relation in a pre-agreed mode;

acquiring the mapping relation in a core network configuration mode;

acquiring the mapping relation in a base station configuration mode;

38. A second communications device, comprising: a second processor and a second communication interface; wherein,

39. The communications device of claim 38, wherein the second processor is specifically configured to perform at least one of the following:

descrambling by using the first identifier to obtain the received SFCI;

descrambling a CRC calculated from the SFCI bits using the first flag;

determining a sequence for carrying the SFCI according to the first identifier;

determining a DMRS sequence of the PSFCH according to the first identifier;

40. The communications device of claim 38, wherein the second processor is further configured to:

and acquiring the first identifier.

41. The communications device of claim 40, wherein the second processor is specifically configured to perform one of the following:

autonomously generating the first identity;

acquiring the first identifier in a predetermined mode;

acquiring the first identifier in a core network configuration mode;

acquiring the first identifier in a base station configuration mode;

42. The communication device according to claim 41, wherein the second processor is further configured to obtain the mapping relationship between the first identifier and the first information by one of:

autonomously generating the mapping relation;

acquiring the mapping relation in a pre-agreed mode;

acquiring the mapping relation in a core network configuration mode;

acquiring the mapping relation in a base station configuration mode;

43. A first communications device, comprising: a first processor and a first memory for storing a computer program capable of running on the processor,

wherein the first processor is adapted to perform the steps of the method of any one of claims 1 to 11 when running the computer program.

44. A second communications device, comprising: a second processor and a second memory for storing a computer program capable of running on the processor,

wherein the second processor is adapted to perform the steps of the method of any of claims 12 to 22 when running the computer program.

45. A storage medium having stored thereon a computer program for performing the steps of the method of any one of claims 1 to 11 or for performing the steps of the method of any one of claims 12 to 22 when executed by a processor.