CN111756500B

CN111756500B - Information transmission method, device, communication equipment and storage medium

Info

Publication number: CN111756500B
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: 2023-06-27
Anticipated expiration: 2039-03-29
Also published as: CN111756500A

Abstract

The invention discloses an information transmission method, an information transmission device, a first communication device, a second communication device 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 identification.

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 device, a communication device, and a storage medium.

Background

A vehicle 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 performing wireless communication and information exchange between vehicles-X (X may be vehicles, roads, pedestrians, the internet, etc.).

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

Disclosure of Invention

In order to solve the existing technical problems, the embodiment of the invention provides an information transmission method, an information transmission device, communication equipment and a 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, which is applied to a first communication device, including:

according to the first identification, the direct link feedback control information (SFCI, sidelink Feedback Control Information) is transmitted on a physical direct link feedback channel (PSFCH, physical Sidelink Feedback CHannel).

Furthermore, in accordance with at least one embodiment of the present invention, when transmitting the SFCI on the PSFCH according to the first identification, the method comprises at least one of:

scrambling SFCI bits transmitted on the PSFCH using the first identification;

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

taking part or all of the first identifier together with SFCI as input bits of CRC calculation;

generating a sequence carrying SFCI according to the first identifier;

generating a demodulation pilot (DMRS) sequence of the PSFCH according to the first identity;

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

and determining the physical resource of the PSFCH according to the first identification.

Furthermore, in accordance with at least one embodiment of the present invention, when generating a sequence carrying SFCIs from a first identity, the method comprises:

related information carrying the sequence of the SFCI is determined based on the first identification.

Furthermore, according to at least one embodiment of the present invention, the related information is at least one of the following information:

group number of the sequence;

a base sequence number;

and (5) cyclic shift.

Furthermore, 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 means for obtaining the first identifier comprises one of:

autonomously generating the first identifier;

acquiring the first identifier in a preset 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 (Layer-1 destination ID) and an Additional Layer 1ID (Additional Layer-1 ID);

And receiving the first identification sent by the second communication equipment.

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

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

Furthermore, in accordance with at least one embodiment of the present invention, the first identification sent by the second communication device via higher layer signaling or physical layer signaling is received during unicast or multicast connection establishment or discovery.

Furthermore, according to at least one embodiment of the present invention, 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 by one of the following manners:

autonomously generating the mapping relation;

acquiring the mapping relation in a preset mode;

the mapping relation is obtained in a core network configuration mode;

the mapping relation is obtained 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 means of base station configuration includes:

And receiving the mapping relation sent by the base station through the higher layer signaling or the physical layer control signaling.

Furthermore, in accordance with at least one embodiment of the present invention, the mapping relationship 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.

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

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

Furthermore, in accordance with at least one embodiment of the present invention, upon receiving the SFCI on the PSFCH, the method includes at least one of:

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

descrambling the CRC calculated from the SFCI bits using the first identification;

checking the received SFCI using the CRC determined with the SFCI for part or all of the first identity;

determining a sequence of the bearing SFCI according to the first identifier;

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

Furthermore, in accordance with at least one embodiment of the present invention, when determining the sequence of the bearing SFCI based on the first identification, the method comprises:

group number of the sequence;

a base sequence number;

and (5) cyclic shift.

and acquiring the first identifier.

autonomously generating the first identifier;

acquiring the first identifier in a preset 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 a Layer-1destination ID and an Additional Layer-1 ID;

a first identification sent by a first communication device is received.

Furthermore, in accordance with at least one embodiment of the present invention, a first identification sent by the first communication device via higher layer signaling or physical layer signaling is received during unicast or multicast connection establishment or discovery.

autonomously generating the mapping relation;

acquiring the mapping relation in a preset mode;

the mapping relation is obtained in a core network configuration mode;

the mapping relation is obtained in a base station configuration mode;

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

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

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 the PSFCH using the first identification;

scrambling the CRC calculated by the SFCI bits with a first identifier;

generating a sequence carrying SFCI according to the first identifier;

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

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

the first acquisition unit is used for acquiring the first identifier.

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

autonomously generating the first identifier;

acquiring the first identifier in a preset mode;

Acquiring the first identifier in a core network configuration mode;

acquiring the first identifier in a base station configuration mode;

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

autonomously generating the mapping relation;

acquiring the mapping relation in a preset mode;

the mapping relation is obtained in a core network configuration mode;

the mapping relation is obtained 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, in accordance with 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 a received SFCI;

determining a sequence of the bearing SFCI according to the first identifier;

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

and the second acquisition unit is used for acquiring the first identifier.

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

autonomously generating the first identifier;

acquiring the first identifier in a preset mode;

acquiring the first identifier in a core network configuration mode;

acquiring the first identifier in a base station configuration mode;

A first identification sent by a first communication device is received.

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

autonomously generating the mapping relation;

acquiring the mapping relation in a preset mode;

the mapping relation is obtained in a core network configuration mode;

the mapping relation is obtained 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 comprising: a first processor and a first communication interface; wherein,,

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

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

scrambling SFCI bits transmitted on the PSFCH using the first identification;

scrambling the CRC calculated by the SFCI bits with a first identifier;

Generating a sequence carrying SFCI according to the first identifier;

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

Furthermore, 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:

autonomously generating the first identifier;

acquiring the first identifier in a preset 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 second communication equipment 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 obtaining the first identifier, a mapping relationship between the first identifier and the first information by one of the following methods:

Autonomously generating the mapping relation;

acquiring the mapping relation in a preset mode;

the mapping relation is obtained in a core network configuration mode;

the mapping relation is obtained 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,,

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

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

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

determining a sequence of the bearing SFCI according to the first identifier;

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

Furthermore, 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:

autonomously generating the first identifier;

acquiring the first identifier in a preset 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 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 obtaining the first identifier, a mapping relationship between the first identifier and the first information by one of the following methods:

autonomously generating the mapping relation;

acquiring the mapping relation in a preset mode;

the mapping relation is obtained in a core network configuration mode;

The mapping relation is obtained 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 comprising: a first processor and a first memory for storing a computer program capable of running on the processor,

the first processor is configured to execute any one of the steps of the method on 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,

and the second processor is used for executing any step of the method at the second communication equipment side when the computer program is run.

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

According to the information transmission method, the information transmission device, the communication equipment and the storage medium provided by the embodiment of the invention, the first communication equipment sends SFCI on PSFCH according to the first identifier; and the second communication equipment receives the SFCI on the PSFCH according to the first identifier, and because the SFCI is sent according to the first identifier, and other illegal UE cannot acquire the first identifier, thereby being incapable of acquiring the SFCI, solving the problem that HARQ-ACK is forged in the V2X communication process, and avoiding transmission failure or resource waste.

Drawings

Fig. 1 is a schematic flow chart of a method for information transmission according to an embodiment of the present invention;

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

FIG. 3 is a schematic diagram of another information transmission device 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, there is the following explanation:

1. under the scenes of NR 2X unified and groupcast, HARQ feedback and HARQ merging can be supported in a physical layer;

2. the PSFCH is used for bearing SFCI;

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

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

Among them, regarding direct link (sidelink) ID related information corresponding to SFCI, the following explanation is given:

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

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

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

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

for physical layer analysis, for a particular packet, the higher layer decides to use an uncast, groupcast or broadcast (broadcast) transmission and notifies the physical layer. When deciding to use an 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, the following information being known to the physical layer:

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

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

Wherein Layer-1 refers to the physical Layer.

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

since the Layer-1 degradation ID is explicitly included in the SCI, and in order to guarantee the sense (decoding) process (based on SCI) of all UEs, all users are required to be able to demodulate the SCI, the Layer-1 degradation ID and the Additional Layer-1ID are known to all UEs within the communication range, and if the resource allocation domain of the SFCI is included in the SCI or the resources of the SFCI are implicitly determined through the resources of the physical direct link shared channel (PSSCH), the resource allocation information of the PSSCH is included in the SCI, which will be known to all UEs within the communication range. In this case, the SCI is transmitted by broadcasting, so that it can be monitored by anyone, and an illegal UE may acquire the resource location of the SFCI, so that the illegal UE falsifies an erroneous ACK, resulting in transmission failure, or falsifies an erroneous NACK, resulting in retransmission at all times, and wasting system resources.

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

The first identifier is associated with the first communication device or the second communication device, or the first identifier is associated with the first communication device and the second communication device at the same time, 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 UE can not acquire the first identifier, so that the SFCI can not 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:

according to the first identification, the SFCI is sent on the PSFCH.

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 other than the first communication device and the second communication device.

In particular, the first identity may be the first communication device or the second communication device related identity, like a cell radio network temporary identity (C-RNTI), i.e. 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. Other UEs are not aware of, except for the first and second communication devices.

In practice, the first identifier is distinguished from the Layer-1 identification ID and the Additional Layer-1ID because: the Layer-1 degradation ID is explicitly included in the SCI, and in order to guarantee the sending process for all users, all users are required to be able to demodulate the SCI, so that the Layer-1 degradation ID and the Additional Layer-1ID are known by 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 sidelink devices. Specifically, the first communication device is a receiving device of the sidelink data; accordingly, the second communication device is a transmitting device of the sidelink data.

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

scrambling SFCI bits transmitted on the PSFCH using the first identification;

scrambling CRC (CRC data) calculated by SFCI bits using a first identification;

generating a sequence carrying SFCI according to the first identifier;

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

Wherein in an embodiment, when generating the sequence carrying SFCI according to the first identifier, the method includes:

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

group number of the sequence;

a base sequence number;

and (5) cyclic shift.

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

In practical applications, 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 information about the DMRS sequence according to the first identifier, and then generate the DMRS sequence from the determined information about the DMRS sequence. The first identifiers are different, and the corresponding related information of the DMRS sequences is different.

In practice, the physical resources of the DMRS may include time domain resources of the DMRS (such as symbols occupied by the DMRS in slots where the PSFCH is located), and frequency domain resources of the DMRS (such as Physical Resource Blocks (PRBs) occupied by the DMRS on the symbols), where the occupied PRBs are related to a DMRS type (type) and a Code Division Multiplexing (CDM) group (group). The physical resource for determining the DMRS of the PSFCH according to the first identifier may be a time domain resource and a frequency domain resource for determining the DMRS of the PSFCH according to the first identifier. The first identifiers are different, and the physical resources of the corresponding DMRS are different.

The physical resources of the PSFCH are determined according to the first identifier, that is, the time domain resources and the frequency domain resources of the PSFCH, such as the timing relationship between the PSFCH and the PSSCH, the PRB occupied by the PSFCH, and the like are determined according to the first identifier. The first identities are different and the physical resources of the corresponding PSFCHs are different.

In practical application, the first communication device also needs to acquire the first identifier.

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

autonomously generating the first identifier;

acquiring the first identifier in a preset mode;

Acquiring the first identifier in a core network configuration mode;

acquiring the first identifier in a base station configuration mode;

When the first identifier is generated autonomously, any autonomous generation algorithm may be adopted in practical application, for example, random generation is adopted, which is not limited by the embodiment of the present invention.

For obtaining the first identifier in a pre-agreed manner, the first communication device and the second communication device may agree on the first identifier in advance in practical application.

In an embodiment, the obtaining the first identifier by means of base station configuration includes:

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

For the mapping relation between the first identifier and the first information, the first identifier is obtained, and when the first communication device is actually applied, the first communication device can obtain the first information through demodulating the SCI, and then the mapping relation is utilized to determine the first identifier.

In practical application, the first communication device also 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 by one of the following manners:

autonomously generating the mapping relation;

acquiring the mapping relation in a preset mode;

the mapping relation is obtained in a core network configuration mode;

the mapping relation is obtained in a base station configuration mode;

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

Here, for autonomously generating the mapping relationship, any autonomous generation algorithm may be adopted in practical application, for example, random generation may be adopted, which is not limited in the embodiment of the present invention.

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

In an embodiment, the obtaining the mapping relationship by means of base station configuration includes:

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

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

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 by means of 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 (to ensure the privacy of the mapping relationship), the transmission process passes through the secure encryption or authentication of the second communication device and the first communication device, so as to ensure that other communication devices cannot learn.

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

receiving an encrypted mapping relation sent by the second communication equipment; decrypting the encrypted mapping relation;

Or,

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

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

Wherein, the higher layer signaling can be RRC signaling or MAC signaling, etc.

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 (to ensure the privacy of the first identifier), the transmission process is encrypted or authenticated by the second communication device and the first communication device, so as to ensure that other communication devices cannot learn.

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; decrypting the encrypted first identifier;

or,

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

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

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

Wherein, in an embodiment, upon receiving the SFCI on the PSFCH according to the first identification, the method comprises at least one of:

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

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

the received SFCI is checked by utilizing the CRC determined by part or all of the first mark and the SFCI, and after the check is successful, the SFCI is determined to be obtained;

determining a sequence of the bearing 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, specifically, when the SFCI bit transmitted by the first communication device on the PSFCH is scrambled by using the first identifier, the second communication device uses the first identifier to descramble, so as to obtain the received SFCI; when the first communication device scrambles the CRC calculated from the SFCI bits using the first identification, the second communication device descrambles the CRC calculated from the SFCI bits using the first identification; checking the received SFCI by using the CRC, and determining to obtain the SFCI after the check is successful; when the first communication equipment takes 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 utilizing the CRC determined by the part or all of the first identifier and the SFCI, and after the check is successful, the SFCI is determined to be obtained; when the first communication device generates a sequence carrying SFCI according to a first identifier, the second communication device determines the sequence carrying SFCI according to the first identifier; 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 carry out subsequent processing; when the first communication equipment determines the physical resource of the DMRS of the PSFCH according to the first identifier, the second communication equipment determines the physical resource of the DMRS of the PSFCH according to the first identifier so as to carry out subsequent processing; when the first communication device determines the physical resource of the PSFCH according to the first identifier, the second communication device determines the physical resource of the PSFCH according to the first identifier so as to carry out subsequent processing.

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

group number of the sequence;

a base sequence number;

and (5) cyclic shift.

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

In practical application, the second communication device also needs to acquire the first identifier.

autonomously generating the first identifier;

acquiring the first identifier in a preset mode;

acquiring the first identifier in a core network configuration mode;

acquiring the first identifier in a base station configuration mode;

A first identification sent by a first communication device is received.

Here, it should be noted that: the manner in which the second communication device obtains the first identity corresponds to the manner in which the first communication device obtains the first identity, in particular,

when the first communication device autonomously generates the first identifier, the second communication device also autonomously generates the first identifier; of course, the autonomous generation algorithm employed by the first communication device to generate the first identification is the same as that employed by the second communication device.

When the first communication device acquires the first identifier in a preset manner, the second communication device also acquires the first identifier in a preset manner.

When the first communication device obtains the first identifier by means of core network configuration, the second communication device also obtains the first identifier by means of core network configuration.

When the first communication device obtains the first identifier by means of base station configuration, the second communication device also obtains the first identifier by means of base station configuration.

When the first communication equipment obtains the first identifier through the mapping relation between the first identifier and the first information, the second communication equipment also obtains the first identifier through the mapping relation between the first identifier and the first information.

When the first communication device receives the first identifier sent by the second communication device, the second communication device obtains the first identifier firstly, for example, the first identifier is 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 obtains the first identifier firstly, for example, the first identifier is configured by a core network or a base station, and sends the first identifier to the second communication device.

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

For the mapping relation between the first identifier and the first information, the first identifier is obtained, and when the second communication device is actually applied, the second communication device can obtain the first information through demodulating the SCI, and then the mapping relation is utilized to determine the first identifier.

In practical application, the second communication device also needs to acquire the mapping relationship.

Autonomously generating the mapping relation;

acquiring the mapping relation in a preset mode;

the mapping relation is obtained in a core network configuration mode;

the mapping relation is obtained in a base station configuration mode;

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

The method for acquiring the mapping relationship by the second communication device is similar to the method for acquiring the first identifier, and corresponds to the method for acquiring the first identifier by the first communication device; in particular, the method comprises the steps of,

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

When the first communication device obtains the mapping relation in a preset mode, the second communication device also obtains the mapping relation in a preset mode.

When the first communication device obtains the mapping relation through a core network configuration mode, the second communication device also obtains the mapping relation through a core network configuration mode.

When the first communication device obtains the mapping relation by means of base station configuration, the second communication device also obtains the mapping relation by means of base station configuration.

When the first communication device receives the mapping relation sent by the second communication device, the second communication device obtains the mapping relation firstly, for example, the mapping relation is configured by a core network or a base station, and sends the mapping relation to the first communication device.

When the second communication device receives the mapping relationship sent by the first communication device, the first communication device obtains the mapping relationship, for example, 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 the process of establishing or finding unicast or multicast connection, the mapping relationship sent by the first communication device through a sidelink high-layer signaling or a physical layer signaling may be received in actual application.

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 by means of 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 an encrypted mapping relation sent by the first communication equipment; decrypting the encrypted mapping relation;

or,

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

For receiving the first identifier sent by the first communication device, in the process of establishing or finding the unicast or multicast connection, the first identifier sent by the first communication device through the sidelink high-layer signaling or the physical layer signaling can be received in actual application.

Wherein, the higher layer signaling can be RRC signaling or MAC signaling, etc.

In practical application, the first communication device may obtain the first identifier through a core network configuration or a 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; decrypting the encrypted first identifier;

or,

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

The embodiment of the invention provides an information transmission method, as shown in fig. 1, which comprises the following steps:

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

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

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

According to the information transmission method provided by the embodiment of the invention, the first communication equipment sends SFCI on PSFCH according to the first identifier; and the second communication equipment receives the SFCI on the PSFCH according to the first identifier, and because the SFCI is sent according to the first identifier, and other illegal UE cannot acquire the first identifier, thereby being incapable of acquiring the SFCI, solving the problem that HARQ-ACK is forged in the V2X communication process, and avoiding transmission failure or resource waste.

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

Application example one

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

The manner in which the receiver obtains the first identifier or the mapping relationship may be that the base station allocates ID information specific to the receiver (receiver) (receiving device of the sidelink data) or the mapping relationship between the first identifier and the Layer-1destination ID to the receiver through higher Layer signaling configuration or physical Layer control signaling; the receiver may autonomously generate the proprietary ID information or a mapping relationship between the first identifier and the Layer-1destination ID.

Application example II

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

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

Application example III

In the present application embodiment, how to transmit SFCI according to the first identification is described. The specific operations may involve the following aspects:

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

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

In a third aspect, part or all of the first identifier may be combined with the SFCI, for example, the SFCI and the first identifier may be arranged in some manner (e.g., first identifier+sfci, or sfci+first identifier), and used as input bits for CRC calculation, and perform processes such as code-fast segmentation, encoding, and rate matching.

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

In a fifth aspect, a DMRS sequence of the PSFCH may be generated according to a first identity; specifically, related information (such as a base sequence number, a sequence group number, an initial sequence, a 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 related information of the DMRS sequence. The first identifiers are different, and the corresponding related information of the DMRS sequences is different.

In a sixth aspect, physical resources (time-frequency domain resources) of the DMRS of the PSFCH may be determined according to the first identity;

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

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

In order to implement the method of the embodiment of the present invention, the embodiment of the present invention further provides an information transmission apparatus, which is disposed on a first communication device, as shown in fig. 2, and the apparatus includes:

The first processing unit 21 is configured to send the SFCI on the PSFCH according to the first identification.

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 the PSFCH using the first identification;

scrambling the CRC calculated by the SFCI bits with a first identifier;

generating a sequence carrying SFCI according to the first identifier;

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

In an embodiment, the first processing unit 21 is configured to determine, when generating the sequence carrying SFCI according to the first identifier, related information of the sequence carrying SFCI 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 one embodiment, the first obtaining unit 22 is specifically configured to perform one of the following operations:

autonomously generating the first identifier;

acquiring the first identifier in a preset 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 obtaining unit 22 is further configured to obtain, by using a mapping relationship between a first identifier and first information, the mapping relationship by one of the following ways when obtaining the first identifier:

autonomously generating the mapping relation;

acquiring the mapping relation in a preset mode;

the mapping relation is obtained in a core network configuration mode;

the mapping relation is obtained in a base station configuration mode;

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

In practical application, 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 at the second communication device side in the embodiment of the present invention, the embodiment of the present invention further provides an information transmission device, which is disposed on the second communication device, as shown in fig. 3, and the device includes:

The second processing unit 31 is configured to receive the SFCI on the PSFCH according to the first identification.

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 a received SFCI;

determining a sequence of the bearing 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, when determining the sequence carrying SFCI according to the first identifier, related information carrying the sequence carrying 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 identifier;

acquiring the first identifier in a preset mode;

Acquiring the first identifier in a core network configuration mode;

acquiring the first identifier in a base station configuration mode;

a first identification sent by a first communication device is received.

In an embodiment, the second obtaining unit 32 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 the following ways:

autonomously generating the mapping relation;

acquiring the mapping relation in a preset mode;

the mapping relation is obtained in a core network configuration mode;

the mapping relation is obtained in a base station configuration mode;

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

In practical application, 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 each program module is used for illustration, and in practical application, the processing allocation may be performed by different program modules according to needs, that is, the internal structure of the device is divided into different program modules, so as to complete all or part of the processing described above. In addition, the information transmission device and the information transmission method provided in the foregoing 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 modules, and in order to implement the method on the first communication device side in the embodiment of the present invention, the 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 information interaction with a second communication device;

the first processor 42 is connected to 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 on the first communication device side when running the computer program. And the computer program is stored on the first memory 43.

Specifically, the first processor 42 is configured to send, according to a first identifier, the SFCI on the PSFCH through the first communication interface 41.

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

scrambling SFCI bits transmitted on the PSFCH using the first identification;

scrambling the CRC calculated by the SFCI bits with a first identifier;

generating a sequence carrying SFCI according to the first identifier;

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

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

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

and acquiring the first identifier.

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

autonomously generating the first identifier;

acquiring the first identifier in a preset 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, by using a mapping relationship between a first identifier and first information, the mapping relationship by one of the following ways when obtaining the first identifier:

Autonomously generating the mapping relation;

acquiring the mapping relation in a preset mode;

the mapping relation is obtained in a core network configuration mode;

the mapping relation is obtained in a base station configuration mode;

the mapping relation sent by the second communication device is received 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 will not be described herein.

Of course, in actual use, the various components in the first communication device 40 are coupled together via the bus system 44. It is understood that the bus system 44 is used to enable connected communications between these components. The bus system 44 includes a power bus, a control bus, and a status signal bus in addition to the data bus. But for clarity of illustration 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 operation on the first communication device 40.

The method disclosed in the above embodiment 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 instructions in the form of integrated logic circuits or software in hardware in the first processor 42. The first processor 42 described above may be a general purpose processor, a digital signal processor (DSP, digital Signal Processor), or other programmable logic device, discrete gate or transistor logic device, discrete hardware components, or the like. The first processor 42 may implement or perform the methods, steps and logic blocks disclosed in embodiments of the present invention. The general purpose processor may be a microprocessor or any conventional processor or the like. The steps of the method disclosed in the embodiment of the invention can be directly embodied in the hardware of the 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, said first processor 42 reading the information in the first memory 43, in combination with its hardware performing the steps of the method as described above.

In an exemplary embodiment, the first communication device 40 may be implemented by one or more application specific integrated circuits (ASIC, application Specific Integrated Circuit), DSPs, programmable logic devices (PLD, programmable Logic Device), complex programmable logic devices (CPLD, complex Programmable Logic Device), field-programmable gate arrays (FPGA, field-Programmable Gate Array), general purpose processors, controllers, microcontrollers (MCU, micro Controller Unit), microprocessors (Microprocessor), 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 according to the embodiment of the present invention, as shown in fig. 5, the second communication device 50 includes:

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

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

Specifically, the second processor 52 is configured to send, according to the first identifier, the SFCI on the PSFCH through the second communication interface 51.

In one 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 a received SFCI;

determining a sequence of the bearing SFCI according to the first identifier;

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

In one embodiment, the second processor 52 is configured to determine, when determining the sequence of the SFCI based on the first identifier, information related to the sequence of the SFCI based on the first identifier.

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

and acquiring the first identifier.

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

autonomously generating the first identifier;

acquiring the first identifier in a preset mode;

acquiring the first identifier in a core network configuration mode;

acquiring the first identifier in a base station configuration mode;

the first identification sent by the first communication device is received via said second communication interface 51.

In an embodiment, the second processor 52 is further configured to obtain, by using a mapping relationship between the first identifier and the first information, the mapping relationship by one of the following ways when obtaining the first identifier:

autonomously generating the mapping relation;

acquiring the mapping relation in a preset mode;

the mapping relation is obtained in a core network configuration mode;

the mapping relation is obtained 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 the method embodiment, and are not described herein.

Of course, in actual use, the various components of the second communication device 50 are coupled together by the bus system 54. It is understood that the bus system 54 is used to enable connected communications between these components. The bus system 54 includes a power bus, a control bus, and a status signal bus in addition to the data bus. But for clarity of illustration 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 embodiment 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 method described above may be performed by instructions in the form of integrated logic circuits or software in hardware in the second processor 52. The second processor 52 described above may be a general purpose processor, 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 embodiments of the present invention. The general purpose processor may be a microprocessor or any conventional processor or the like. The steps of the method disclosed in the embodiment of the invention can be directly embodied in the hardware of the 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, said second processor 52 reading the information in the second memory 53, in combination with its hardware performing the steps of the method as described above.

The second communication device 50 may be implemented by one or more ASIC, DSP, PLD, CPLD, FPGA, general-purpose processors, controllers, MCU, microprocessor, or other electronic elements for performing the foregoing methods in exemplary embodiments.

It is to be understood that the memories (the first memory 43, the second memory 53) of the embodiments of the present invention may be volatile memories or nonvolatile memories, and may include both volatile and nonvolatile memories. Wherein the nonvolatile Memory may be Read Only Memory (ROM), programmable Read Only Memory (PROM, programmable Read-Only Memory), erasable programmable Read Only Memory (EPROM, erasable Programmable Read-Only Memory), electrically erasable programmable Read Only Memory (EEPROM, electrically Erasable Programmable Read-Only Memory), magnetic random access Memory (FRAM, ferromagnetic random access Memory), flash Memory (Flash Memory), magnetic surface Memory, optical disk, or compact disk Read Only Memory (CD-ROM, compact Disc Read-Only Memory); the magnetic surface memory may be a disk memory or a tape memory. The volatile memory may be random access memory (RAM, random Access Memory), which acts as external cache memory. By way of example, and not limitation, many forms of RAM are available, such as static random access memory (SRAM, static Random Access Memory), synchronous static random access memory (SSRAM, synchronous Static Random Access Memory), dynamic random access memory (DRAM, dynamic Random Access Memory), synchronous dynamic random access memory (SDRAM, synchronous Dynamic Random Access Memory), double data rate synchronous dynamic random access memory (ddr SDRAM, double Data Rate Synchronous Dynamic Random Access Memory), enhanced synchronous dynamic random access memory (ESDRAM, enhanced Synchronous Dynamic Random Access Memory), synchronous link dynamic random access memory (SLDRAM, syncLink Dynamic Random Access Memory), direct memory bus random access memory (DRRAM, direct Rambus Random Access Memory). The memory described by 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 of the embodiment of the present invention, the 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 for transmitting SFCI on the PSFCH according to the first identification;

the second communication device 62 is configured to receive the SFCI on the PSFCH according to the first identification.

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

In an exemplary embodiment, the present invention also provides a storage medium, i.e. a computer storage medium, in particular a computer readable storage medium, for example comprising a first memory 43 storing a computer program executable by the first processor 42 of the first communication device 40 for performing the steps of the aforementioned terminal side method. For example, the second memory 53 storing a computer program executable by the second processor 52 of the second communication device 50 to perform the steps of the terminal-side method described above. The computer readable storage medium may be FRAM, ROM, PROM, EPROM, EEPROM, flash Memory, magnetic surface Memory, optical disk, or CD-ROM.

It should be noted that: "first," "second," etc. are used to distinguish similar objects and not necessarily to describe a particular order or sequence.

In addition, the embodiments of the present invention may be arbitrarily combined without any collision.

The foregoing description is only of the preferred embodiments 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, comprising:

according to the first identification, direct link feedback control information SFCI is sent on a physical direct link feedback channel PSFCH; wherein, when the SFCI is sent on the PSFCH according to the first identification, the method comprises:

generating a sequence carrying SFCI according to the first identifier; wherein, when the sequence carrying the SFCI is generated according to the first identifier, the method comprises the following steps:

determining relevant information of a sequence carrying the SFCI according to the first identifier, wherein the relevant information is at least circularly shifted;

the method further comprises the steps of:

acquiring the first identifier; the method for acquiring the first identifier comprises one of the following steps:

autonomously generating the first identifier;

acquiring the first identifier in a preset 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 1-mesh ID Layer-1 destination ID and an additional Layer 1 ID Additional Layer-1 ID;

2. The method of claim 1, wherein when transmitting the SFCI on the PSFCH according to the first identification, the method further comprises at least one of:

scrambling SFCI bits transmitted on the PSFCH using the first identification;

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

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

3. The method of claim 1, wherein the related information is further at least one of:

group number of the sequence;

A base sequence number.

4. The method according to claim 1, wherein the obtaining the first identifier by means of base station configuration includes:

5. The method of claim 1, wherein the first identification sent by the second communication device via higher layer signaling or physical layer signaling is received during unicast or multicast connection establishment or discovery.

6. The method of claim 1, wherein when the first identifier is obtained by using a mapping relationship between the first identifier and first information, the method further comprises obtaining the mapping relationship by one of the following ways:

autonomously generating the mapping relation;

acquiring the mapping relation in a preset mode;

the mapping relation is obtained in a core network configuration mode;

the mapping relation is obtained in a base station configuration mode;

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

7. The method according to claim 6, wherein the obtaining the mapping relationship by means of base station configuration includes:

8. The method of claim 6, wherein the mapping relationship 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.

9. An information transmission method, applied to a second communication device, comprising:

receiving the SFCI on the PSFCH according to the first identification; wherein, according to the first identification, when receiving SFCI on PSFCH, the method comprises:

determining a sequence of the bearing SFCI according to the first identifier; wherein when determining the sequence carrying SFCI according to the first identifier, the method comprises:

the method further comprises the steps of:

autonomously generating the first identifier;

acquiring the first identifier in a preset 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 a Layer-1 Destination ID and an Additional Layer-1 ID;

A first identification sent by a first communication device is received.

10. The method of claim 9, wherein upon receiving the SFCI on the PSFCH according to the first identification, the method further comprises at least one of:

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

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

11. The method of claim 9, wherein the related information is further at least one of:

group number of the sequence;

a base sequence number.

12. The method according to claim 9, wherein the obtaining the first identifier by means of base station configuration includes:

13. The method of claim 9, wherein the first identification sent by the first communication device via higher layer signaling or physical layer signaling is received during unicast or multicast connection establishment or discovery.

14. The method of claim 9, wherein when the first identifier is obtained by using a mapping relationship between the first identifier and first information, the method further comprises obtaining the mapping relationship by one of:

autonomously generating the mapping relation;

acquiring the mapping relation in a preset mode;

the mapping relation is obtained in a core network configuration mode;

the mapping relation is obtained in a base station configuration mode;

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

15. The method according to claim 14, wherein the obtaining the mapping relationship by means of base station configuration includes:

16. The method according to claim 14, wherein the mapping relation sent by the first communication device through higher layer signaling or physical layer control signaling is received during unicast or multicast connection establishment or discovery.

17. An information transmission apparatus, comprising:

a first processing unit, configured to send an SFCI on the PSFCH according to the first identifier; the first processing unit is specifically configured to perform the following operations:

Generating a sequence carrying SFCI according to the first identifier; wherein the first processing unit is configured to:

when the sequence carrying the SFCI is generated according to the first identifier, determining related information of the sequence carrying the SFCI according to the first identifier, wherein the related information is at least circularly shifted;

the apparatus further comprises:

the first acquisition unit is used for acquiring the first identifier; wherein,,

the first acquisition unit is specifically configured to perform one of the following operations:

autonomously generating the first identifier;

acquiring the first identifier in a preset mode;

acquiring the first identifier in a core network configuration mode;

acquiring the first identifier in a base station configuration mode;

18. The apparatus according to claim 17, wherein the first processing unit is further specifically configured to perform at least one of the following operations:

scrambling SFCI bits transmitted on the PSFCH using the first identification;

scrambling the CRC calculated by the SFCI bits with a first identifier;

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

19. The apparatus of claim 17, wherein the first obtaining unit is further configured to obtain, by using a mapping relationship between a first identifier and first information, the mapping relationship by one of:

autonomously generating the mapping relation;

acquiring the mapping relation in a preset mode;

the mapping relation is obtained in a core network configuration mode;

the mapping relation is obtained in a base station configuration mode;

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

20. An information transmission apparatus, comprising:

a second processing unit, configured to receive the SFCI on the PSFCH according to the first identification; the second processing unit is specifically configured to perform the following operations:

determining a sequence of the bearing SFCI according to the first identifier; wherein the second processing unit is configured to:

when the sequence carrying the SFCI is determined according to the first identifier, determining related information of the sequence carrying the SFCI according to the first identifier, wherein the related information is at least cyclic shift;

The apparatus further comprises:

the second acquisition unit is used for acquiring the first identifier; the second obtaining unit is specifically configured to perform one of the following operations:

autonomously generating the first identifier;

acquiring the first identifier in a preset mode;

acquiring the first identifier in a core network configuration mode;

acquiring the first identifier in a base station configuration mode;

a first identification sent by a first communication device is received.

21. The apparatus according to claim 20, wherein the second processing unit is in particular further configured to perform at least one of the following operations:

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

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

22. The apparatus of claim 20, wherein the second 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 preset mode;

the mapping relation is obtained in a core network configuration mode;

the mapping relation is obtained in a base station configuration mode;

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

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

the first processor is configured to send, according to a first identifier, an SFCI over a PSFCH through the first communication interface; the first processor is specifically configured to perform the following operations:

generating a sequence carrying SFCI according to the first identifier; wherein the first processor is configured to:

the first processor is further configured to:

Acquiring the first identifier; the first processor is specifically configured to perform one of the following operations:

autonomously generating the first identifier;

acquiring the first identifier in a preset mode;

acquiring the first identifier in a core network configuration mode;

acquiring the first identifier in a base station configuration mode;

24. The communication device of claim 23, wherein the first processor is further specifically configured to perform at least one of:

scrambling SFCI bits transmitted on the PSFCH using the first identification;

scrambling the CRC calculated by the SFCI bits with a first identifier;

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

25. The communication device of claim 23, wherein the first processor is further configured to obtain, by using a mapping between a first identifier and first information, the mapping by one of:

autonomously generating the mapping relation;

acquiring the mapping relation in a preset mode;

the mapping relation is obtained in a core network configuration mode;

the mapping relation is obtained in a base station configuration mode;

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

the second processor is configured to send, according to the first identifier, an SFCI over the PSFCH through the second communication interface; the second processor is specifically configured to perform the following operations:

determining a sequence of the bearing SFCI according to the first identifier; wherein the second processor is configured to:

The second processor is further configured to:

acquiring the first identifier; wherein the second processor is specifically configured to perform one of the following operations:

autonomously generating the first identifier;

acquiring the first identifier in a preset mode;

acquiring the first identifier in a core network configuration mode;

acquiring the first identifier in a base station configuration mode;

27. The communication device of claim 26, wherein the second processor is further specifically configured to perform at least one of:

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

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

28. The communication device of claim 26, 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 preset mode;

the mapping relation is obtained in a core network configuration mode;

the mapping relation is obtained in a base station configuration mode;

29. A first communication 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 of claims 1 to 8 when the computer program is run.

30. A second communication 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 9 to 16 when the computer program is run.

31. A storage medium having stored thereon a computer program, which when executed by a processor, performs the steps of the method of any of claims 1 to 8 or performs the steps of the method of any of claims 9 to 16.